CN114688042A - Fixation sensing function pump, pump fixation sensing system, fire pump system and operation method - Google Patents
Fixation sensing function pump, pump fixation sensing system, fire pump system and operation method Download PDFInfo
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- CN114688042A CN114688042A CN202111602305.6A CN202111602305A CN114688042A CN 114688042 A CN114688042 A CN 114688042A CN 202111602305 A CN202111602305 A CN 202111602305A CN 114688042 A CN114688042 A CN 114688042A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 230000007797 corrosion Effects 0.000 claims abstract description 53
- 238000005260 corrosion Methods 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims description 139
- 230000006870 function Effects 0.000 claims description 99
- 238000002347 injection Methods 0.000 claims description 87
- 239000007924 injection Substances 0.000 claims description 87
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- 239000002699 waste material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 238000013135 deep learning Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
- G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
- G05B23/0235—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0267—Fault communication, e.g. human machine interface [HMI]
- G05B23/027—Alarm generation, e.g. communication protocol; Forms of alarm
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Abstract
The present invention relates to a fixation sensing function pump, a pump fixation sensing system, a fire pump system, and a method of operation, and more particularly, to a fire pump system that copes with whether or not a pump is fixed inside. More specifically, the present invention includes a pump having a fixation sensing function in which a fixation sensing unit capable of sensing corrosion of a pump member is provided, and a control unit for receiving information from the fixation sensing unit and determining whether the pump member is corroded or fixed, so that whether the pump member is corroded or fixed can be automatically grasped, and when the pump member is corroded or fixed, a circulation pipe is opened to circulate water in the pump member so as to prevent waste of water, and the water passes through a water tank so that the flow rate of the water is reduced and then enters the pump, so that a load applied to the pump can be minimized even if the water circulates a plurality of times.
Description
Technical Field
The present invention relates to a fixation sensing function pump, a pump fixation sensing system including the fixation sensing function pump, and a high-safety fire pump system including the fixation sensing system, and more particularly, to a fire pump system that deals with whether a pump is fixed or not.
Background
In a fire extinguishing system installed in a building, in the case of an old building, fire extinguishing is impossible due to an incomplete management of a fire pump that supplies fire extinguishing water to a fire sprinkler, and tragedies continue to occur.
The main cause of such a fire pump failure is that the impeller, which is a core member of the fire pump, is made of inexpensive cast iron, and therefore has a high possibility of corrosion, and the fire pump is driven only in the event of a fire, and is constantly driven in a state filled with water in the fire pump and its piping, and therefore, if left standing for a long period of time, corrosion of a material such as cast iron inevitably occurs. When corrosion or adhesion occurs inside the pump, the impeller cannot rotate well, the function of the pump itself is reduced, and it is difficult to supply water to the fire sprinkler.
Thus, considering that corrosive materials cannot be used for fire pump parts including impellers at home and abroad, parts suggested to be made of corrosion-resistant stainless steel materials are prepared. However, this is not limited to all parts of the fire pump, but only the impeller and the shaft connected to the shaft of the pump driving motor to rotate in the pump are limited, and parts of the other pump casing are still made of cast iron for saving production costs, and even if the inner impeller and the pump shaft are made of corrosion-resistant materials, if the parts of the other pump casing are made of corrosive materials, there is still a possibility of corrosion and sticking, and thus it is still difficult to solve the problem.
In order to solve such a problem, as shown in fig. 1, in an "electric storage type fire pump system" (hereinafter, referred to as a conventional art) of korean registered patent No. 10-0955704, an automatic test operation of a pump is periodically performed under the control of a controller, thereby preventing the fixing of an impeller of a fire pump. In the conventional method of discharging the flow discharged by the automatic operation of the fire pump through a branched discharge pipe by a discharge port, the fire pump needs to be driven sufficiently often to prevent the impeller from being fixed, and a considerable amount of water is wasted each time the fire pump is driven.
However, since an inverter for driving a motor for a large-capacity pump is relatively expensive, the price of the entire fire pump increases, and therefore, the inverter is hardly suitable for a fire pump in actual production, and a constant-speed driving system, i.e., an induction motor is used, and thus, the conventional technology has a problem that it is practically difficult to apply the inverter.
Documents of the prior art
Patent document
Korean registered patent No. 10-0955704 "electric storage type fire pump System"
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a pump fixation sensing system including: the pump comprises a fixation sensing function pump having a fixation sensing part capable of sensing corrosion of the pump component and a control part for receiving information from the fixation sensing part and judging whether the pump component is corroded or not and is fixed or not, so that whether the pump component is corroded or not and fixed or not can be automatically grasped.
In addition, a high safety fire pump system is provided as follows: when corrosion and fixation occur in the pump, the circulating pipe is opened to make water circularly flow in the pump to avoid waste of water, the water passes through the water tank in the middle, the flow rate of the water is reduced, and then the water enters the pump, so that even if the water circularly flows for many times, the load applied to the pump can be minimized.
Means for solving the problems
In order to solve the above-described problems, the present invention provides a fixation sensing function pump, including: a pump housing including a suction port and a discharge port and having a space formed therein; and a fixation sensing unit provided in an internal space of the pump housing, the fixation sensing unit providing fluid state information inside the pump housing.
In addition, the fixation sensing portion includes: and a resistance detection unit that detects a resistance of the fluid inside the pump housing.
In addition, the fixation sensing portion includes: and a turbidity detection unit for detecting the turbidity of the fluid in the pump shell.
Further, the turbidity detecting means includes: a light emitting unit attached to an inner surface of the pump housing and emitting light with a constant illuminance; and a light receiving unit attached to an inner surface of the pump housing, attached to a position facing the light emitting unit, and receiving light from the light emitting unit.
The present invention provides a pump fixation sensing system, comprising: the fixation sensing function pump according to any one of items 1 to 4 above; and a control unit for receiving fluid state information from the fixation sensing unit of the fixation sensing function pump and determining whether the inside of the pump casing is corroded or fixed.
Further, the control unit may determine that corrosion or sticking has occurred in the pump housing when a state in which the turbidity of the fluid received by the sticking sensing unit is larger than a predetermined reference value continues for a predetermined time or a state in which the electric resistance of the fluid received by the sticking sensing unit is smaller than a predetermined reference value continues for a predetermined time.
The control unit stores the information received from the fixation sensing unit, corrosion or fixation judgment information in the pump housing, and authenticity of the judgment information in a memory, and adjusts a reference value for judging whether the pump housing is corroded or fixed based on the information stored in the memory.
The invention provides a high-safety fire pump system, which is characterized by comprising: the pump set sensing system of item 5 above; a water tank for storing fluid; an ejection unit that receives the fluid from the fixation sensing function pump and ejects the fluid to the outside; a piping section, comprising: a circulation pipe connecting the fixation sensing function pump and the water tank to circulate the fluid between the fixation sensing function pump and the water tank; and an injection pipe connecting the fixation sensing function pump and the injection part; and a valve unit coupled to the piping unit to adjust opening and closing of the piping unit, wherein the control unit controls the valve unit to open the circulation pipe and close the injection pipe when it is determined that corrosion or adhesion has occurred in the pump case, and controls the valve unit to open the injection pipe and close the circulation pipe when it is determined that corrosion or adhesion has not occurred in the pump case.
In addition, still include: a pressure gauge coupled to the injection pipe to detect a fluid pressure inside the injection pipe; a flow meter coupled to the circulation pipe to detect a flow rate inside the circulation pipe; a speedometer which is combined with the outlet of the pump shell and detects the flow speed of the discharge port of the fixation sensing function pump; and a water level sensor attached to the inside of the water tank to sense a water level inside the water tank.
Further, the control unit compares a flow rate value of the flow meter with a predetermined target circulation flow rate value, controls the fixation sensing function pump so that the flow rate value of the flow meter converges to the target circulation flow rate value, compares a fluid pressure value of the pressure gauge with a predetermined target jet fluid pressure value, controls the fixation sensing function pump so that the fluid pressure value of the fluid pressure gauge converges to the target jet fluid pressure value, compares a velocity value of the speedometer with a control value of the fixation sensing function pump of the control unit, determines that an abnormality has occurred when the velocity value of the speedometer does not converge to the control value of the fixation sensing function pump of the control unit, and compares a water level value of the water level sensor with a predetermined maximum water level value of the water tank, when the water level of the water level sensor is equal to the maximum water level of the water tank, the control unit controls the valve unit to open the water tank.
The invention provides an application method of a high-safety fire pump system, which utilizes the high-safety fire pump system, and the high-safety fire pump system comprises the following steps: a pump fixation sensing system including a fixation sensing function pump and a control section; a water tank for storing a fluid; an ejection unit that receives the fluid from the fixation sensing function pump and ejects the fluid to the outside; a piping section, comprising: a circulation pipe connecting the fixation sensing function pump and the water tank to circulate the fluid between the fixation sensing function pump and the water tank; and an injection pipe connecting the fixation sensing function pump and the injection part; and a valve unit that is coupled to the piping unit and adjusts opening and closing of the piping unit, wherein the control unit performs: an information receiving step of receiving information from the fixation sensing unit; analyzing and judging whether the received information is corroded or fixed inside the pump shell or not by analyzing and judging the received information; a mode setting step of setting a mode of the high-safety fire pump system based on the analyzed information; and an execution step of controlling the high-safety fire pump system based on the mode set in the mode setting step.
In the mode setting step, the control unit sets the mode of the high-safety fire pump system to a circulation mode in which the fluid reciprocates between the fixation sensing function pump and the water tank along the circulation pipe when it is determined in the analyzing and determining step that the corrosion or the fixation has occurred, and sets the mode of the high-safety fire pump system to an injection mode in which the fluid is injected through an injection pipe when it is determined in the analyzing and determining step that the corrosion or the fixation has not occurred.
In addition, when the mode set in the mode setting step is a circulation mode, the executing step includes the steps of: an injection pipe closing step in which the control unit closes the injection pipe to prevent the fluid from being transferred to the outside; a circulation pipe opening step of opening the circulation pipe by the control unit to circulate the fluid in the fixation sensing function pump and the water tank; a circulation flow rate adjusting step in which the control unit controls the fixation sensing function pump to adjust a flow rate of circulation based on information on a flow meter connected to the circulation pipe and flow rate information in a predetermined circulation mode; a water level sensing step of receiving water level information from a water level sensor in the water tank; and a water tank opening step in which the control unit opens the circulation pipe connecting the water tank and the suction port of the fixation sensing function pump when the water level of the water tank is equal to or higher than a predetermined value in the water tank level sensing step.
Further, in a case where the mode set in the mode setting step is an injection mode, the executing step executes: a circulation pipe closing step in which the control unit closes the circulation pipe to prevent circulation of the fluid; an injection pipe opening step in which the control unit opens the injection pipe and transmits the fluid to the outside; and a fluid pressure adjusting step in which the control unit controls the fixation sensing function pump and the valve unit based on information from a fluid pressure gauge connected to the injection pipe and fluid pressure information in a predetermined injection mode so as to maintain a fluid pressure in the injection pipe at a constant level.
Effects of the invention
The pump fixation sensing system configured as described above includes a fixation sensing function pump having a fixation sensing section for sensing corrosion of the pump member therein, and a control section for receiving information from the fixation sensing section and determining whether corrosion or fixation is present, thereby automatically grasping whether corrosion or fixation is present in the pump member.
In addition, the high-safety fire pump system including the pump fixation sensing system opens the circulation pipe to circulate water inside the pump to avoid waste of water when corrosion and fixation occur inside the pump, and the water passes through the water tank in the middle to reduce the flow rate of the water and then enters the pump, so that the load applied to the pump can be minimized even if the water circulates and flows for many times.
Drawings
Fig. 1 is a perspective view of the conventional art.
Fig. 2 is an internal cross-sectional view of the fixation sensing function pump of the present invention.
FIG. 3 is a block diagram of the pump fixation sensing system of the present invention.
FIG. 4 is a conceptual diagram of a high safety fire pump system of the present invention.
FIG. 5 is a sequence diagram of a method of operating the high safety fire pump system of the present invention.
Fig. 6 is a sequence diagram showing a specific procedure of the information receiving procedure.
Fig. 7 is a sequence diagram showing a specific procedure of the execution procedure in the loop mode.
Fig. 8 is a sequence diagram showing specific steps of the execution steps in the injection mode.
(symbol description)
1000: high security fire pump system
100: pump fixation sensing system
10: fixation sensing function pump
11: pump casing
12: fixation sensing part
12 a: resistance detection unit 12 b: turbidity detecting unit
20: control unit
200: water tank
300: injection part
400: piping section
410: the circulation pipe 420: injection pipe
500: valve section
600: pressure gauge
700: flow meter
800: speedometer
900: water level sensor
Detailed Description
The technical idea of the present invention will be described in more detail below with reference to the accompanying drawings. The terms and words used in the present specification and claims should not be interpreted as meaning in a general dictionary in a limited manner, and the inventors should be interpreted as meaning and concept conforming to the technical idea of the present invention based on the principle of appropriately defining the concept of the terms in order to explain their own invention in an optimum manner.
The invention relates to research subject of '50 kW vertical multi-stage intelligent fire pump system Development (Development of 50kW vertical multi-stage intelligent fire pump system') in Industrial Technology innovation Industry developed with the support of Korean Industry Evaluation Institute of Industrial Technology under the support of Ministry of Industrial Trade resources (motion) of the Republic of Korea, and before describing the invention, the subject is expressed as thank you (subject inherent number: 20011387, contribution rate: 1/1, Dooch (strain of director research Institute), research period: 2020.04.01-2022.12.31)
Next, the structure and features of the fixation sensing function pump 10 according to the present invention will be described with reference to fig. 2.
The fixation sensing function pump 10 of the present invention is a pump capable of autonomously sensing corrosion and fixation inside, and includes: a pump casing 11 having a structure including a suction port and a discharge port and forming a space therein to apply force to an impeller or fluid; and a fixation sensing part 12 provided in the internal space of the pump housing 11.
At this time, the fixation sensing portion 12 provides fluid state information of the inside of the pump housing 11. The fixation sensing part 12 is a sensor that contacts the inner surface of the pump housing 11. The fixation sensing part 12 includes a resistance detection unit 12a and a turbidity detection unit 12 b.
When corrosion occurs inside the pump housing 11, the corroded iron particles are mixed with the fluid and suspended, and the resistance value of the fluid decreases. That is, when the resistance value detected by the resistance detection means 12a is equal to or less than a predetermined value, it is determined that corrosion has occurred inside the pump housing 11. The resistance detection unit 12a may be a resistance detector.
The resistance detection unit 12a is attached to the inner surface of the pump housing 11 or located outside the pump housing 11, and receives fluid inside the pump housing 11 for a predetermined time to sense resistance.
When corrosion occurs inside the pump housing 11, the corroded iron particles are mixed with the fluid and suspended, thereby increasing the turbidity of the fluid. That is, when the turbidity detected by the turbidity detecting means 12b is equal to or greater than a predetermined value, it is determined that corrosion has occurred inside the pump case 11. The turbidity detecting means 12b is composed of a light emitting part and a light receiving part attached to the inner surface of the pump case 11. More specifically, when the turbidity of the fluid increases due to corrosion occurring inside the pump housing 11 in a state where the light emitting section emits light at a constant illuminance and the light receiving section receives and senses the light from the light emitting section, the light received by the light receiving section is blocked by a constant amount, and the turbidity can be sensed.
In this case, the light emitting section and the light receiving section are arranged to face each other for detection accuracy, and the light emitting section and the light receiving section are preferably arranged at positions where there is no interference of the structure of the fixation sensing function pump 10 such as the impeller.
The possibility of corrosion is calculated based on the resistance favorable for corrosion detection, and the possibility of fixation is calculated by turbidity detection favorable for fixation detection.
With this configuration, the manager can recognize the state of the pump more precisely.
Further, pump abnormality warning information is generated based on the corrosion possibility and the sticking possibility.
The pump abnormality warning message is calculated by weighting the corrosion possibility and the sticking possibility.
The sticking probability may be given a higher weight than the corrosion probability. As an example, the pump abnormality warning information is obtained by adding the corrosion possibility multiplied by a k1 weight and the fixation possibility multiplied by a k2 weight, and k2> k 1.
As still another example, the pump abnormality warning level in the case where the possibility of corrosion is low and the possibility of fixation is high may be higher than the pump abnormality warning level in the case where the possibility of corrosion is high and the possibility of fixation is low.
With this configuration, the manager can recognize the state of the pump more intuitively.
In addition, it is inferred that an error has occurred in the turbidity detection and the resistance detection based on the sticking possibility and the corrosion possibility.
Since corrosion tends to occur earlier than fixation of the pump, if the electric resistance is still very high even if the turbidity is very high, it is determined that there is an error in the resistance detection or an error in the turbidity detection.
The controller compares the turbidity detection result with the resistance detection result, stores the detection result and/or a relative comparison value, and determines whether or not the detection is erroneous based on the stored detection history and/or the comparison value and the currently detected turbidity and resistance.
The detection error and/or pump abnormality warning message is divided into a plurality of steps to provide the state of the pump and the sensor portion to the user.
With this configuration, reliability of the pump state information is improved, and unnecessary management traffic caused by a detection error or the like is reduced.
Next, the structure and features of the pump fixation sensing system 100 of the present invention will be described with reference to fig. 3.
The pump fixation sensing system 100 includes the fixation sensing function pump 10 described above. In addition, the pump fixation sensing system 100 includes a control section 20 that receives internal fluid state information of the fixation sensing function pump 10 from the fixation sensing section 12 and determines whether or not the inside of the pump casing 11 is corroded or fixed. Next, an algorithm in which the control unit 20 integrates the information received from the fixation sensing unit 12 to make a final determination will be described.
The control unit 20 receives the turbidity and the resistance value of the fluid from the fixation sensing unit 12, and finally determines that corrosion has occurred in the fixation sensing function pump 10 when the turbidity of the fluid is equal to or more than a predetermined reference or the resistance value is equal to or less than a predetermined reference and the state continues for a predetermined time or more in order to eliminate erroneous detection.
The control unit 20 stores data for determining whether the inside of the pump housing 11 is corroded or not and whether the inside of the pump housing is fixed or not in a memory. The information stored to the memory includes the status information received from the fixation sensing section 12 and the resulting fixation or non-fixation judgment status. Additionally, the authenticity judgment of the control unit 20 is received from the user and stored in the memory.
The control unit 20 executes deep learning based on the information (the information received from the fixation sensing unit 12, the judgment on whether corrosion or fixation is present in the pump housing 11, and the authenticity of the judgment information), learns an error, and learns and senses the turbidity current and the resistance current at the time of actual corrosion and fixation. Thus, even when the turbidity value and the resistance value are abnormally detected due to a machine failure of the simple sticking sensing unit 12, it is possible to distinguish and determine whether or not sticking is occurring.
The control unit 20 executes the above-described deep learning to adjust a reference value for determining whether the inside of the pump case 11 is corroded or fixed. The pump fixation sensing system 100 according to the present invention can automatically adjust the reference value to improve the detection accuracy even if the turbidity or the resistance of the internal fluid is not affected by the season or the arrangement position of the pump even if corrosion does not occur.
Next, the pipeline of the present invention will be described with reference to fig. 4.
The high-safety fire pump system 1000 according to the present invention includes the pump fixation sensing system 100 including the fixation sensing function pump 10, and includes: a water tank 200 for storing fluid; and an ejection unit 300 that receives the fluid from the fixation sensing function pump 10 and ejects the fluid to the outside. The line includes a pipe portion 400 and a valve portion 500 coupled to the pipe portion 400 to adjust opening and closing of the pipe portion 400. The piping part 400 includes a circulation pipe 410 and an injection pipe 420, and when the circulation pipe 410 is opened, the fixation sensing function pump 10 and the water tank 200 are connected to circulate the fluid in the fixation sensing function pump 10 and the water tank 200. As shown in fig. 4, the circulation pipe 410 may be provided with 2 or more pipes including a pipe through which the fluid moves from the fixation sensing function pump 10 to the water tank 200 and a pipe through which the fluid moves from the water tank 200 to the fixation sensing function pump 10, or may be provided with one pipe through which the fluid moves in both directions. The injection pipe 420 connects the fixation sensing function pump 10 and the injection part 300, and injects the fluid discharged from the fixation sensing function pump 10 to the outside.
Preferably, the control unit 20 controls the valve unit 500 to open the injection pipe 420 and close the circulation pipe 410 in a state where corrosion and sticking inside the pump case 11 are not determined, that is, at ordinary times. This is to facilitate the ejection of the fluid inside the fixation sensing function pump 10 to the outside when it is necessary to eject and convey the fluid to the outside of the pipeline as in the case of a fire.
When the control unit 20 determines corrosion and sticking inside the pump case 11, the control unit 20 controls the valve unit 500 to close the injection pipe 420 and open the circulation pipe 410, thereby circulating the fluid inside the sticking detection function pump 10 and preventing foreign matter generated by corrosion from being stuck to the impeller inside the sticking detection function pump 10. At this time, since the circulated fluid is reused, waste of the fluid due to additional driving of the fixation sensing function pump 10 can be reduced.
At this time, it is preferable that the fluid discharged from the fixation sensing function pump 10 is sucked into the suction port of the fixation sensing function pump 10 through the water tank 200. In the case where the fixation sensing function pump 10 is used for fire fighting, a large force is required, and therefore the discharge flow rate is very large, and in the case where the discharge flow rate is not reduced and is sucked into the suction port, the load applied to the suction port becomes large, and therefore the life of the pump housing 11 may be shortened. Therefore, the fluid is sucked into the fixation sensing function pump 10 through the water tank 200, and the load on the suction port is reduced, so that the fixation sensing function pump 10 can be used more stably for a longer period of time. Further, since the water tank 200 includes a filter device therein, foreign substances suspended in the fluid by corrosion can be filtered, and thus the water tank can be used for a longer period of time without replacing the fluid.
The high-safety fire pump system 1000 includes a pressure gauge 600, a flow meter 700, a speed meter 800, and a water level sensor 900, which transmit information to the control unit 20. A pressure gauge 600 is coupled to the injection pipe 420 to detect the fluid pressure inside the injection pipe 420, a flow meter 700 is coupled to the circulation pipe 410 to detect the flow rate inside the circulation pipe 410, and a speedometer 800 is coupled to the outlet of the pump housing 11 to detect the flow rate of the discharge port of the fixation sensing function pump 10. In addition, the water level sensor 900 is attached to the inside of the water tank 200 to sense the water level inside the water tank 200.
The pressure gauge 600 and the flow meter 700 send information to the control unit 20 to feed back whether the injection pipe 420 and the circulation pipe 410 are opened or not, and the control unit 20 effectively adjusts the fluid pressure of the injected fluid and the flow rate of the circulated fluid. The speedometer 800 allows the control unit 20 to determine whether or not the fixation sensing function pump 10 is operating normally. The water level sensor 900 transmits the amount of fluid in the water tank 200 to the control unit 20 in real time, thereby preventing a situation in which the fluid is poured into the water tank 200 to a certain height or more and overflows the water tank 200, and when the fluid is poured into the water tank 200 to a certain height, the control unit 20 opens the water tank 200, thereby discharging the fluid from the water tank 200 at a certain flow rate and circulating the fluid in the interior of the fixation sensing function pump 10 without using a separate pump.
The valve portions 500 are disposed in the circulation pipe 410 and the injection pipe 420, respectively. The valve portion 500 is a valve disposed in either the circulation pipe 410 or the injection pipe 420. For example, as shown in fig. 4, in the case where only the injection pipe 420 is provided with a valve, when the valve of the injection pipe 420 is opened, so that the fluid of the fixation sensing function pump 10 flows to the injection pipe 420, and the fluid does not naturally flow to the circulation pipe 410. Conversely, when the valve of the injection pipe 420 is closed, the fluid of the fixation sensing function pump 10 flows to the circulation pipe 410, and thus the circulation pipe 410 is opened.
The valves of the valve unit 500 are disposed in the injection pipe 420 and the circulation pipe 410, respectively. This prevents the fluid from flowing to the injection pipe 420 and the circulation pipe 410 or from flowing to the injection pipe 420 and the circulation pipe 410 due to the occurrence of an abnormality in one of the two valves.
Further, the valve of the valve section 500 is disposed at the lower end of the water tank 200. This is for the following purposes: when a fluid is circulated between the fixation sensing function pump 10 and the water tank 200 in order to prevent the fixation of the fixation sensing function pump 10, the control unit 20 is caused to open the water tank 200 when a fluid of a certain height is injected into the water tank 200, and the fluid is discharged from the water tank 200 at a certain flow rate and circulated inside the fixation sensing function pump 10 without using a separate pump.
The method of the present invention will be described below with reference to fig. 5 to 8.
As shown in fig. 5, the method of using the high-safety fire pump system 1000 includes an information receiving step, an analyzing and determining step, a mode setting step, and an executing step. The information receiving step is a step in which the control section 20 receives information from the fixation sensing unit. As shown in fig. 6, the information receiving step includes a resistance receiving step in which the control section 20 receives the resistance value of the fluid from the resistance detection device, and a turbidity receiving step in which the control section 20 receives the turbidity value of the fluid from the turbidity detection device. Preferably, the resistance receiving step and the turbidity receiving step are performed simultaneously and are performed from time to time. In addition, in the case where only either one of the resistance detection unit 12a and the turbidity detection unit 12b is attached to the inside of the fixation sensing function pump 10 adapted to the high-safety fire pump system 1000, a part of the steps may be omitted in accordance therewith.
The analyzing and determining step is a step in which the control unit 20 analyzes the information received from the fixation sensing unit to determine whether the inside of the pump housing 11 is corroded or fixed. At this time, the control unit 20 finally determines that corrosion has occurred in the interior of the fixation sensing function pump 10 when the state continues for a predetermined time or longer to eliminate erroneous detection, based on the turbidity and the resistance value of the fluid received from the fixation sensing unit 12, even if the state is received in which the turbidity of the fluid is equal to or greater than a predetermined reference or the resistance value is equal to or less than a predetermined reference.
The control unit 20 determines whether or not the inside of the pump housing 11 is corroded or fixed based on a reference value adjusted by deep learning based on stored data and the turbidity and the current state of change in resistance of the fluid. Accordingly, even when the turbidity value and the resistance value are abnormally detected by the simple sticking sensor 12 due to a machine failure, whether or not the sticking is detected can be discriminated, and even when the turbidity or the resistance of the internal fluid is not affected by the season or the arrangement position of the pump in a state where the corrosion does not occur, the reference value can be automatically adjusted to improve the detection accuracy even if the information of the turbidity or the resistance value is not directly received from the user.
The mode setting step is a step of setting the mode of the high-safety fire pump system 1000 based on the information analyzed by the control unit 20. In the mode setting step, when it is determined in the analyzing and determining step that corrosion or sticking has occurred, the control unit 20 sets the mode of the high-safety fire pump system 1000 to a circulation mode in which the fluid is caused to travel to and from the sticking sensing function pump and the water tank 200 along the circulation pipe 410, and when it is determined in the analyzing and determining step that corrosion or sticking has not occurred, it is preferable to set the mode of the high-safety fire pump system 1000 to an injection mode in which the fluid is injected through the injection pipe 420.
The execution step is a step in which the control unit 20 controls the high-safety fire pump system based on the mode set in the mode setting step. At this time, in the case where the mode set in the mode setting step is the circulation mode, as shown in fig. 7, the performing steps include a spray pipe 420 closing step and a circulation pipe 410 opening step, a circulation flow rate adjusting step, a water tank 200 water level sensing step, and a water tank 200 opening step.
In the injection pipe 420 closing step, the control part 20 controls the valve part 500 to close the injection pipe 420, thereby preventing the fluid from being transmitted to the outside, and in the circulation pipe 410 opening step, the control part 20 controls the valve part 500 to open the circulation pipe 410, thereby circulating the fluid in the fixation sensing function pump 10 and the water tank 200. At this time, the injection pipe 420 closing step and the circulation pipe 410 opening step may be performed simultaneously, and the valve of the valve part 500 controlled by the control part 20 is disposed in either the circulation pipe 410 or the injection pipe 420. For example, only in the case where the injection pipe 420 is provided with a valve, when the valve of the injection pipe 420 is opened, the fluid of the fixation sensing function pump 10 flows to the injection pipe 420, and the fluid naturally does not flow to the circulation pipe 410. Conversely, when the valve of the injection pipe 420 is closed, the fluid of the fixation sensing function pump 10 flows to the circulation pipe 410, and thus the circulation pipe 410 is opened.
In addition, the valves of the valve part 500 are disposed in the injection pipe 420 and the circulation pipe 410, respectively, and the injection pipe 420 closing step is performed prior to the circulation pipe 410 opening step. This prevents the fluid from flowing to the outside of the high-safety fire pump system 1000, thereby preventing the fluid from flowing to the injection pipe 420 and the circulation pipe 410 or the fluid from flowing to the injection pipe 420 and the circulation pipe 410 due to an abnormality occurring in either of the two valves.
In the circulation flow rate adjustment step, the control unit 20 compares the information of the flow meter 700 connected to the circulation pipe 410 with the flow rate information in the predetermined circulation mode, and controls the fixation sensing function pump 10 to adjust the flow rate when the flow rate information received from the flow meter 700 is larger or smaller than the flow rate information in the predetermined circulation mode.
In the water level sensing step and the water level sensing step of the water tank 200, the controller 20 receives the water level information of the inside of the water tank 200 from the water level sensor 900 of the inside of the water tank 200, and opens the circulation pipe 410 connecting the water tank 200 and the suction port of the fixation sensing function pump 10 when the water level of the water tank 200 is equal to or more than a predetermined value. This is to cause the controller 20 to open the water tank 200 when a fluid of a certain height is injected into the water tank 200, thereby discharging the fluid from the water tank 200 at a certain flow rate and circulating the fluid inside the fixation sensing function pump 10 without using a separate pump.
The execution steps in the case where the mode set in the mode setting step shown in fig. 8 is the injection mode include a circulation pipe 410 closing step and an injection pipe 420 opening step and a fluid pressure adjusting step.
In the injection pipe 420 opening step, the control portion 20 controls the valve portion 500 to open the injection pipe 420, thereby preventing the fluid from being transmitted to the outside, and in the circulation pipe 410 closing step, the control portion 20 controls the valve portion 500 to close the circulation pipe 410, thereby circulating the fluid in the fixation sensing function pump 10 and the water tank 200. At this time, the injection pipe 420 opening step and the circulation pipe 410 closing step may be performed simultaneously, and the valve of the valve part 500 controlled by the control part 20 is disposed in either the circulation pipe 410 or the injection pipe 420. For example, only in the case where the injection pipe 420 is provided with a valve, when the valve of the injection pipe 420 is opened, the fluid of the fixation sensing function pump 10 flows to the injection pipe 420, and the fluid naturally does not flow to the circulation pipe 410. Conversely, when the valve of the injection pipe 420 is closed, the fluid of the fixation sensing function pump 10 flows to the circulation pipe 410, and thus the circulation pipe 410 is opened.
In addition, the valves of the valve portion 500 are disposed in the injection pipe 420 and the circulation pipe 410, respectively, and the closing step of the circulation pipe 410 is executed in priority to the opening step of the injection pipe 420. Thus, the fluid to be injected is prevented from flowing into the water tank 200 and being accumulated, and the fluid is prevented from flowing into the injection pipe 420 and the circulation pipe 410 or not flowing into the injection pipe 420 and the circulation pipe 410 due to the abnormal state of one of the two valves.
In the fluid pressure adjusting step, the control unit 20 compares information on the fluid pressure gauge connected to the injection pipe 420 with fluid pressure information in a predetermined injection mode, and controls the fixation sensing function pump 10 and the valve unit 500 so that the fluid pressure inside the injection pipe 420 is kept constant. Thus, the fluid is ejected to the outside at a constant fluid pressure, and the load applied to the pipe is reduced by adjusting the degree of the fluid pressure applied to the inside of the pipe.
Claims (14)
1. A fixation sensing function pump, comprising:
a pump casing including a suction port and a discharge port and having a space formed therein; and
a fixation sensing part arranged in the inner space of the pump shell,
the fixation sensing unit provides fluid state information in the pump housing.
2. The fixation sensing function pump of claim 1,
the fixation sensing unit includes a resistance detection unit that detects a resistance of the fluid inside the pump housing.
3. The fixation sensing function pump of claim 1,
the fixation sensing unit includes a turbidity detection unit that detects turbidity of the fluid inside the pump housing.
4. The fixation sensing function pump of claim 3,
the turbidity detecting unit includes:
a light emitting unit attached to an inner surface of the pump housing and emitting light with a constant illuminance; and
and a light receiving part attached to an inner surface of the pump housing, attached to a position opposite to the light emitting part, and receiving light from the light emitting part.
5. A pump fixation sensing system, comprising:
the fixation sensing function pump of any one of claims 1 to 4; and
and a control unit for receiving fluid state information from the fixation sensing unit of the fixation sensing function pump and determining whether the inside of the pump casing is corroded or fixed.
6. The pump fixation sensing system of claim 5,
the control unit determines that corrosion or sticking has occurred in the pump housing when a state in which the turbidity of the fluid received by the sticking sensing unit is larger than a predetermined reference value continues for a predetermined time or a state in which the resistance of the fluid received by the sticking sensing unit is smaller than a predetermined reference value continues for a predetermined time.
7. The pump fixation sensing system of claim 6,
the control unit stores the information received from the fixation sensing unit, corrosion or fixation judgment information in the pump casing, and authenticity of the judgment information in a memory,
and adjusting a reference value for determining whether the pump casing is corroded or fixed based on the information stored in the memory.
8. A high security fire pump system, characterized in that it includes:
the pump fixation sensing system of claim 5;
a water tank for storing fluid;
an ejection unit that receives the fluid from the fixation sensing function pump and ejects the fluid to the outside;
a piping section, comprising: a circulation pipe connecting the fixation sensing function pump and the water tank to circulate the fluid between the fixation sensing function pump and the water tank; and an injection pipe connecting the fixation sensing function pump and the injection part; and
a valve section coupled to the piping section to adjust opening and closing of the piping section,
when it is determined that corrosion or sticking has occurred in the pump case, the control unit controls the valve unit to open the circulation pipe and close the injection pipe,
when it is determined that corrosion or sticking has not occurred in the pump case, the control unit controls the valve unit to open the injection pipe and close the circulation pipe.
9. The high safety fire pump system of claim 8, further comprising:
a pressure gauge coupled to the injection pipe to detect a fluid pressure inside the injection pipe;
a flow meter coupled to the circulation pipe to detect a flow rate inside the circulation pipe;
a speedometer which is combined with the outlet of the pump shell and detects the flow speed of the discharge port of the fixation sensing function pump; and
and a water level sensor attached to the inside of the water tank to sense a water level inside the water tank.
10. The high safety fire pump system of claim 9,
the control unit compares the flow rate value of the flowmeter with a predetermined target circulation flow rate value, controls the sticking detection function pump so that the flow rate value of the flowmeter converges to the target circulation flow rate value,
the control part compares the fluid pressure value of the pressure gauge with a preset target jet fluid pressure value, controls the fixation sensing function pump to make the fluid pressure value of the fluid pressure gauge converge to the target jet fluid pressure value,
comparing a speed value of the speedometer with a control value of the sticking sensing function pump of the control section, and determining that an abnormality has occurred when the speed value of the speedometer does not converge to the control value of the sticking sensing function pump of the control section,
the control unit controls the valve unit to open the water tank when the water level of the water level sensor is equal to the maximum water level of the water tank.
11. A method of operating a high safety fire pump system, utilizing a high safety fire pump system, the high safety fire pump system comprising:
a pump fixation sensing system including a fixation sensing function pump and a control section;
a water tank for storing fluid;
an ejection unit that receives the fluid from the fixation sensing function pump and ejects the fluid to the outside;
a piping section, comprising: a circulation pipe connecting the fixation sensing function pump and the water tank to circulate the fluid between the fixation sensing function pump and the water tank; and an injection pipe connecting the fixation sensing function pump and the injection part; and
a valve section coupled to the piping section to adjust opening and closing of the piping section,
the operation method is characterized by comprising the following steps executed by the control part:
an information receiving step of receiving information from the fixation sensing unit;
analyzing and judging step, analyzing the received information to judge whether the inside of the pump shell is corroded or fixed;
a mode setting step of setting a mode of the high-safety fire pump system based on the analyzed information; and
and an execution step of controlling the high-safety fire pump system based on the mode set in the mode setting step.
12. The method of claim 11, wherein the high safety fire pump system,
in the above-mentioned mode setting step,
in the case where it is determined in the analyzing and determining step that the corrosion or sticking has occurred,
the control unit sets a mode of the high-safety fire pump system to a circulation mode in which fluid is circulated between the fixation sensing function pump and the water tank along the circulation pipe,
in the case where it is judged in the analyzing and judging step that the corrosion or sticking does not occur,
the control unit sets the mode of the high-safety fire pump system to an injection mode in which the fluid is injected through the injection pipe.
13. The method of claim 12, wherein the high safety fire pump system,
in the case where the mode set in the mode setting step is the circulation mode,
the executing step includes the following steps executed by the control unit:
an injection pipe closing step of closing the injection pipe to prevent the fluid from being transmitted to the outside;
a circulation pipe opening step of opening the circulation pipe to circulate the fluid in the fixation sensing function pump and the water tank;
a circulation flow rate adjusting step of controlling the fixation sensing function pump to adjust a circulation flow rate based on information of a flow meter connected to the circulation pipe and flow rate information in a predetermined circulation mode;
a water tank level sensing step of receiving water level information inside the water tank from a water level sensor inside the water tank; and
a water tank opening step of opening the circulation pipe connecting the water tank and the suction port of the fixation sensing function pump when the water level of the water tank is equal to or more than a predetermined value in the water tank level sensing step.
14. The method of claim 12, wherein the high safety fire pump system,
in the case where the mode set in the above-described mode setting step is the injection mode,
the executing step includes the step of executing the control unit as follows:
a circulation pipe closing step of closing the circulation pipe to prevent the circulation of the fluid;
an injection pipe opening step of opening the injection pipe to transmit the fluid to the outside; and
and a fluid pressure adjusting step of controlling the fixation sensing function pump and the valve unit so that the fluid pressure inside the injection pipe is maintained constant, based on information of a fluid pressure gauge connected to the injection pipe and fluid pressure information in a predetermined injection mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0184490 | 2020-12-28 | ||
| KR1020200184490A KR102517157B1 (en) | 2020-12-28 | 2020-12-28 | Fixation sensing functional pump, fixation sensing system for pump and high safety fire pump system comprising the same and operating method thereof |
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| Publication Number | Publication Date |
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| CN114688042A true CN114688042A (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111602305.6A Pending CN114688042A (en) | 2020-12-28 | 2021-12-24 | Fixation sensing function pump, pump fixation sensing system, fire pump system and operation method |
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| KR (2) | KR102517157B1 (en) |
| CN (1) | CN114688042A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100646131B1 (en) * | 2006-08-25 | 2006-11-15 | 주식회사 엔티시스템 | Pump preventing adherence and draining automatically, and system of noticing opperating condition thereof |
| CN201218804Y (en) * | 2008-06-04 | 2009-04-08 | 中国石油天然气股份有限公司 | Online corrosion monitor for high-pressure natural gas pipeline by resistance method |
| KR101278973B1 (en) * | 2012-11-14 | 2013-07-02 | (유)한성산기 | System for intelligently managing in a pumping station and reservoir |
| JP2014037840A (en) * | 2004-07-26 | 2014-02-27 | Ebara Corp | Fire pump device |
| JP2018107970A (en) * | 2016-12-27 | 2018-07-05 | 川本電産株式会社 | Extinction pump unit and control method for extinction pump unit |
| CN207575626U (en) * | 2017-12-06 | 2018-07-06 | 徐州徐开电气有限公司 | A kind of electrical inspection actuator for preventing fire pump rust dead |
| KR20180087747A (en) * | 2017-01-25 | 2018-08-02 | 주식회사 에너틱스 | apparatus controlling and preventing fastening of pump |
| KR101997683B1 (en) * | 2019-03-14 | 2019-07-08 | (주)그린텍 | Method and apparatus for detecting foreign matter of a pump based on video |
| KR102132995B1 (en) * | 2019-10-11 | 2020-07-13 | 동원펌프주식회사 | Fire-fighting pump system with automatic commissioning and seizure prevention |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100955704B1 (en) | 2009-08-06 | 2010-05-03 | 화랑시스템(주) | Capacitive fire pump system |
-
2020
- 2020-12-28 KR KR1020200184490A patent/KR102517157B1/en active IP Right Grant
-
2021
- 2021-12-24 CN CN202111602305.6A patent/CN114688042A/en active Pending
-
2022
- 2022-12-22 KR KR1020220181250A patent/KR102590391B1/en active IP Right Grant
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014037840A (en) * | 2004-07-26 | 2014-02-27 | Ebara Corp | Fire pump device |
| KR100646131B1 (en) * | 2006-08-25 | 2006-11-15 | 주식회사 엔티시스템 | Pump preventing adherence and draining automatically, and system of noticing opperating condition thereof |
| CN201218804Y (en) * | 2008-06-04 | 2009-04-08 | 中国石油天然气股份有限公司 | Online corrosion monitor for high-pressure natural gas pipeline by resistance method |
| KR101278973B1 (en) * | 2012-11-14 | 2013-07-02 | (유)한성산기 | System for intelligently managing in a pumping station and reservoir |
| JP2018107970A (en) * | 2016-12-27 | 2018-07-05 | 川本電産株式会社 | Extinction pump unit and control method for extinction pump unit |
| KR20180087747A (en) * | 2017-01-25 | 2018-08-02 | 주식회사 에너틱스 | apparatus controlling and preventing fastening of pump |
| CN207575626U (en) * | 2017-12-06 | 2018-07-06 | 徐州徐开电气有限公司 | A kind of electrical inspection actuator for preventing fire pump rust dead |
| KR101997683B1 (en) * | 2019-03-14 | 2019-07-08 | (주)그린텍 | Method and apparatus for detecting foreign matter of a pump based on video |
| KR102132995B1 (en) * | 2019-10-11 | 2020-07-13 | 동원펌프주식회사 | Fire-fighting pump system with automatic commissioning and seizure prevention |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102590391B1 (en) | 2023-10-19 |
| KR20220093608A (en) | 2022-07-05 |
| KR20230010178A (en) | 2023-01-18 |
| KR102517157B1 (en) | 2023-04-04 |
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