46 results about "Pump failure" patented technology

A small and cost effective sewage treatment system intended for unattended use in individual homes, small industries or businesses in locations where a central sewage treatment plant is not available. The sewage treatment system comprises a conventional septic tank which drains into a smaller aerated holding tank, a pump to transfer effluent from the holding tank into a disinfecting chamber, a regenerative heat exchanger used to raise the temperature of the effluent while being aerated in the holding tank, means for pumping the effluent at a controlled rate through a microwave field, and a conventional drain field used to release the disinfected water into the surrounding soil. Operation of this system is fully regulated by a micro-controller, thereby eliminating the need for human intervention during normal use. This invention also incorporates electronic means for detecting various fault conditions which may impede effective disinfection, means for diagnosing what part of the system is at fault, means for reporting the fault and diagnose to a central municipal location via a telephone or transponder system, an emergency battery backup system, and means for reverting system operation to that of a conventional septic tank and drain field system is case of a total power failure (both A / C and DIC) or water pump failure. Conventional household alternating current or a battery recharged via a wind generator or solar cells may power the sewage treatment system.

In a hydraulic machine, hydraulic pump failure is detected and the pump lifespan is estimated before the pump failure occurs. The discharge pressure 122, oil temperature 126, and drain filter differential pressure 120 are measured, a correlative relationship 128 between the filter differential pressure and the discharge pressure is determined, and a representative filter differential pressure 130 is calculated from this correlative relationship. Using an oil temperature-differential pressure correlation function, the representative differential pressure value 130 is corrected so that the variable component 132 caused by the oil temperature 126 is eliminated therefrom. The long-term trend and the short-term trend of the increase over time of the corrected differential pressure is calculated. A pump failure is predicted or the pump lifespan is estimated based on the degree of deviation between the long-term trend and the short-term trend.

In a hydraulic machine, hydraulic pump failure is detected and the pump lifespan is estimated before the pump failure occurs. The discharge pressure 122, oil temperature 126, and drain filter differential pressure 120 are measured, a correlative relationship 128 between the filter differential pressure and the discharge pressure is determined, and a representative filter differential pressure 130 is calculated from this correlative relationship. Using an oil temperature-differential pressure correlation function, the representative differential pressure value 130 is corrected so that the variable component 132 caused by the oil temperature 126 is eliminated therefrom. The long-term trend and the short-term trend of the increase over time of the corrected differential pressure is calculated. A pump failure is predicted or the pump lifespan is estimated based on the degree of deviation between the long-term trend and the short-term trend.

The invention discloses a multi-water-pump automatic control method of a central air conditioner energy-saving control system. The method comprises the steps that all states of water pumps are monitored, operating time real-time accumulation is updated and stored in real time, the water pumps capable of operating are sorted according to operating time real-time accumulation, and the water pump shortest in operating time is preferentially started according to the sequence till the number of the water pumps required by the system is met; and when the feedback state of the water pump shortest in operating time is any one of a manual control state, a failure state, a local control state, a power access failure state and a maintenance state, the operating state of the water pump is automatically displayed, an alarm is output, sorting is carried out again, and the water pumps are started. According to the method, multiple system states except for water pump failures are considered, operating of the water pumps is automatically stopped and restored to be started according to the monitoring states of the water pumps so as to deal with the operating conditions of the water pumps more comprehensively, the unattended aim of a machine room is achieved better, and normal operating of a central air conditioner is protected.

The present invention such as active diagnostic algorithms is developed not only to realize the early detection of degraded vacuum pumps for the protection of pump failure but also to provide their predictive maintenance. According to the present invention, it is possible to find simple and effective ways to deal with technical problems arising from the large variability of the pump-by-pump operation characteristics and the multiple process conditions where pumps run under the idle operation and gas-loaded operation conditions alternately, especially in semiconductor manufacturing process.

The present invention such as active diagnostic algorithms is developed not only to realize the early detection of degraded vacuum pumps for the protection of pump failure but also to provide their predictive maintenance. According to the present invention, it is possible to find simple and effective ways to deal with technical problems arising from the large variability of the pump-by-pump operation characteristics and the multiple process conditions where pumps run under the idle operation and gas-loaded operation conditions alternately, especially in semiconductor manufacturing process.

An improved fluid pumping system is described. The pump is designed such that any gas present in the fluid being pumped is completely displaced from the pumping chamber with each downstroke of a pump plunger. This prevents pump failure due to gas-locking by preventing gas build-up within the pump, thereby improving long-term pumping efficiency and increasing pump life.

A method and apparatus for delivering process materials in a bulk delivery system includes a plurality of pumps arranged in series along a material supply line, wherein the capacity of each pump is such that less than all of the pumps operating simultaneously can provide a desired level of system performance for a given application. In at least one preferred embodiment, a plurality of pumps include three pumps are arranged in series. Preferred embodiments provide several benefits over a parallel arrangement of two larger pumps including, in the case of a single pump failure, that the remaining pumps are signaled to increase speed to restore system performance to restore supply line pressure with less perturbation than that realized in a two-pump, parallel arranged system. Methods are also provided herein for determining which of the three pumps is a failed pump in such a case.

The invention discloses a traditional Chinese preparation used for treating myocardial infarction caused by myocardial ischemia which comprises the following traditional Chinese materials with the weight account: ginseng of 17 to 22, water frog of 8 to 12, schisandra of 8 to 12, aconite of 8 to 12, salvia of 8 to 12, platyciad semen of 18 to 22, gadfly of 8 to 12, pinellia ternate of 8 to 12, panax notoginseng of 8 to 12, ligusticum wallichii of 8 to 12, musk of 0.8 to 1.2, melon of 13 to 17, Chinese onion of 13 to 17. The invention has the advantages of replenishing qi, activating blood and eliminating phlegm, treating myocardial infarction caused by myocardial ischemia by combining with the western medicine treatment, and reducing the incidence of arrhythmia, pump failure, embolization and other complications obviously; intravenous thromboly treatment significantly lowers the hospitalized death rate.

A control system for a cardiac assist device includes a sensor implantable in the body at the heart or at an implanted pump of the cardiac assist device, the sensor being for detecting motion of the pump within the body and hence being for monitoring movement of the pump, where the control system is arranged to, in use: receive signals from the sensor, the signals providing information on the movement of the pump; and to process the signals to monitor the pump speed and / or to identify pump malfunction and / or cardiac assist treatment complications.

A dishwasher that detects a failure of a wash pump and a method for detecting a failure of a wash pump of the dishwasher are disclosed. The method detects a malfunction of a washing pump of a dishwasher by measuring the temperature of the water at different locations within the dishwasher. It is determined that the washing pump fails when a temperature difference between the water temperature measured at one location and the water temperature at a different location in the dishwasher is greater than or equal to a reference value.

A technique for determining whether a cooling fluid pump used for pumping a cooling fluid through a fuel cell stack has failed. The technique includes measuring the temperature of the cooling fluid at the output from the stack and / or measuring the cathode exhaust gas temperature as close as possible to the cathode outlet of the stack. The measured temperature is compared to a temperature that would be expected under the current operating conditions of the fuel cell system in a controller. If the difference between the measuring temperature and the expected temperature is large enough, then the controller provides a warning signal of pump failure, and also possibly reduces the stack outlet power.

A single tank configuration of a fish tank or livewell includes an outer container; an inner container installed inside the outer container, the inner container having a first end with an entry hole and a second end with an exit hole; and a pump installed between the inner and outer containers at one end of the fish tank or livewell for facilitating water circulation inside the fish tank or livewell. The inner and outer containers have an elongated shape. A double tank configuration of a fish tank or livewell includes two single tanks; connecting pipes for connecting the two single tanks to each other; and at least one pump installed between the two single tanks (130), the at least one pump being connected to the connecting pipes (150) for facilitating water circulation in the two single tanks. In each of the tank configurations, an endless water stream is formed in one straight direction within the tank and the water speeds can be adjusted by the pump(s). All variations of the endless stream tanks, including portable single tanks, portable double tanks, and permanently installed boat livewells can utilize a raw water entry at the inlet of the tank with an overboard discharge at the outlet to provide a unidirectional flow within the tank, and thereby maintaining the endless stream concept. This can be utilized as a back-up system in the event of aeration pump failure, or to provide changing of the tank water.

The present invention relates to a dehumidifier safety cut-off system. This invention is an after-market safety accessory for existing dehumidifiers which operate through the use of a condensate-pump. The safety cut-off system would automatically shut down a dehumidifier in the event of pump failure by disabling the power supply to the dehumidifier. This system would consist of a compact housing with an external power cord, a transformer, a normally closed relay, and a pair of external, low voltage leads that would be connected to the safety float switch leads of the condensate pump. The invention could also feature an alternative version that could be hard wired in place.

A technique for determining whether a cooling fluid pump used for pumping a cooling fluid through a fuel cell stack has failed. The technique includes measuring the temperature of the cooling fluid at the output from the stack and / or measuring the cathode exhaust gas temperature as close as possible to the cathode outlet of the stack. The measured temperature is compared to a temperature that would be expected under the current operating conditions of the fuel cell system in a controller. If the difference between the measuring temperature and the expected temperature is large enough, then the controller provides a warning signal of pump failure, and also possibly reduces the stack outlet power.

An environmental monitoring and control system and method are provided for preventing overflow of fluid from a compartment continuous with a settling tank. The system includes an improved pump configuration to minimize pump failure and maintenance, as well as monitoring of fluid volume within the compartment and adjustment of pumping rate as necessary to maintain an appropriate fluid volume. Operators on or off-site may be notified of compartment fluid volume to provide further redundancy.

A pump failure alarm device includes two digital-analog converting circuits (100, 110), a voltage sampling circuit (120), a controlling circuit (130), an I / O controller (U11), and an alarm circuit (140). The digital-analog converting circuits receive digital pulse signals from two pumps (200, 210), and respectively output a DC voltage signal at an output terminal when the pumps run normally. The voltage sampling circuit with two input terminals respectively coupled to the output terminals of the two digital-analog converting circuits, and outputs a first voltage signal when the two pumps run normally and outputs a second voltage signal when either or both of the pumps stop running. The controlling circuit receives the voltage signals from the voltage sampling circuit, and outputs a first control signal when it receives the first voltage signal and outputs a second control signal when it receives the second voltage signal. The I / O controller receives the control signals from the controlling circuit, and outputs an alarm signal when it receives the second control signal. The alarm circuit receives the alarm signal from the I / O controller, and activates an alarm.

The invention is a sewage lift station having a chamber for accumulating sewage and a pump mechanism for expelling sewage to a remote location. A sewage drop pipe is provided which directs sewage entering into the station below a triggering mechanism on the pump thereby eliminating pump failure caused by solids within the sewage dropping onto it. A remote alarm system is provided to signal pump failure.

A technique for determining whether a cooling fluid pump used for pumping a cooling fluid through a fuel cell stack has failed. The technique includes measuring the temperature of the cooling fluid at the output from the stack and / or measuring the cathode exhaust gas temperature as close as possible to the cathode outlet of the stack. The measured temperature is compared to a temperature that would be expected under the current operating conditions of the fuel cell system in a controller. If the difference between the measuring temperature and the expected temperature is large enough, then the controller provides a warning signal of pump failure, and also possibly reduces the stack outlet power.

A device for providing assistance to ventricular systole, the device comprising a pressuriser and a driver, wherein the pressuriser is adapted to be able to apply localised pressure to only the external wall of one ventricle, or a portion thereof, and the driver is operatively linked to the pressuriser so as to be able to drive a cycle of increased and decreased pressure applied by the pressuriser. The invention also relates to a method of implanting the device and a method of treating cardiac pump failure in which the device is used.

Design solutions to mitigate the following four fatal flaws in the conventional pump system design; namely, (1) surprised pump-failure in single pump design that can result in costly water damage; (2) the threat of fatal high voltage electrocution accident in flooding situation; (3) grid power outage and no energy supply to support the needed pumping power that result in water damage; (4) stinky smell from the sitting foil water in the well after a period of low seeping rate with or without activated pumping. The principles described in the content disclosure, the proposed designs can completely mitigate the above four fatal design issues.

The invention discloses an uninterrupted cooling water system and a control method for an annealing furnace unit of a double continuous galvanizing production line. The system includes: a first water pump, a second water pump, a third water pump, a fourth water pump and a fifth water pump; The first water pump, the second water pump and the third water pump are powered by the normal circuit and the accident circuit of the second production line; the first water pump, the second water pump and the third water pump are controlled by the control loops of the first production line and the second production line; The fourth water pump and the fifth water pump are powered by the normal circuit and the accident circuit of the first production line; the fourth water pump and the fifth water pump are controlled by the control loop of the first production line; where the first water pump and the second water pump are in the running state of The annealing furnace unit of the double continuous galvanizing production line is cooled. If the first water pump or the second water pump fails, the third water pump will be activated; if two or more of the first water pump, the second water pump and the third water pump fail, then Activate the fourth water pump and / or the fifth water pump.

The invention relates to a grayscale image based nuclear reactor main pump failure auxiliary diagnosis system and method. The method comprises the following main steps: a data front end processing unit collects real-time related data of reactor operation, generates a dynamic matrix related to reactor real-time operation through analysis and integration of the processing unit, then conducts further conversion to enable the dynamic matrix to be normalized, and then generates a grayscale image; a programmable logic gate array conducts relevant operation and contrastive analysis on the grayscale image transmitted from the data front end processing unit and the standard grayscale image, stored in database, of a reactor main pump under normal working condition and accident working condition, and finds out the failure image with the maximal relevance and the highest matching degree; the system automatically judges the type and process, and feeds the diagnosis result back to an operator station; at the moment, an operator strictly monitors the related important parameter change of the grayscale image under the failure working condition according the pre-judgment result provided by the system, and finally determines the type and process of the main pump failure.

The invention discloses a fault classification diagnosis method for an emulsion pump. By stacking a plurality of automatic encoders and Softmax classifiers to build a deep self-encoding network (DAE), the multi-source monitoring parameters of the emulsion pump are used as input, and the adaptive features Learn and identify the failure mode of the emulsion pump, develop a fault location expert system, integrate the identified failure mode and necessary failure information, and analyze the cause. The adopted fault classification diagnosis method, the first level is the online fault identification based on the deep self-encoding network, which objectively and accurately reflects the failure form of the emulsion pump. Once the fault is confirmed, it will immediately alarm and trigger the offline fault location expert system; The second level is the fault location based on the expert system, which can accurately locate the fault and save the cost at the same time. The method makes full use of the powerful self-adaptive feature extraction ability of deep autoencoding network and the superiority of expert system in dealing with difficult mathematical problems, and provides a new idea for the fault diagnosis of emulsion pump.

The invention provides a vacuum system performance degradation measurement method based on a roots pump failure mode, and belongs to the field of vacuum systems. The method comprises the steps of: determining the relation between the pressure in a vacuum container and the working time of a roots pump according to a roots pump working model in a vacuum system, a first wear height of a bearing of a first rotor of the roots pump, a second wear height of the first rotor and a third wear height of the first rotor. The performance degradation degree of the vacuum system is measured according to the vacuum degree acquired in the vacuum container in real time and the determined relation between the pressure in the vacuum container and the working time of the roots pump. The method can obtain the performance degradation degree of the vacuum system online; and compared with a traditional vacuum system performance degradation measurement method, the method is higher in intuition, is effectively convenient for users to timely know the performance degradation degree of the vacuum system, and maintains the roots pump.

An electromagnetically driven urea pump OBD diagnosis method, which is used for OBD diagnosis of a urea pump or a urea nozzle that is driven by an electromagnetically driven pulse-type frequency modulation to adjust metering flow, and is characterized in that the control program in the urea pump control unit (DCU) includes the following steps : (1) Measure the T3 signal parameter T3M corresponding to each constant volume working pulse T1M; (2) If T3M is less than the preset constant volume critical value T3choked, then it is determined that there may be a blockage fault in the liquid outlet pipe or injection pipe; (3) Regularly measure the T3EOBD corresponding to the working pulse T1EOBD for detection; (4) If (T3M‑T3EOBD) is less than the preset slope critical value, then it is determined that there may be a sticking fault of the plunger sleeve; (5) If T3EOBD is greater than the preset empty If the critical value of the pump is exceeded, then it is determined that there may be an empty pump fault in the pump due to air resistance.

The invention discloses a traditional Chinese preparation used for treating myocardial infarction caused by myocardial ischemia which comprises the following traditional Chinese materials with the weight account: ginseng of 17 to 22, water frog of 8 to 12, schisandra of 8 to 12, aconite of 8 to 12, salvia of 8 to 12, platyciad semen of 18 to 22, gadfly of 8 to 12, pinellia ternate of 8 to 12, panax notoginseng of 8 to 12, ligusticum wallichii of 8 to 12, musk of 0.8 to 1.2, melon of 13 to 17, Chinese onion of 13 to 17. The invention has the advantages of replenishing qi, activating blood and eliminating phlegm, treating myocardial infarction caused by myocardial ischemia by combining with the western medicine treatment, and reducing the incidence of arrhythmia, pump failure, embolization and other complications obviously; intravenous thromboly treatment significantly lowers the hospitalized death rate.