TWI693084B - Fire-fighting pump machine can ensure the bottom valve cleaning device and the fire-fighting system with the device - Google Patents

Abstract

A fire-fighting pump machine can ensure that it is connected with a bottom valve cleaning device for maintaining the water pressure in a fire protection system and cleaning a bottom valve in the fire protection system. The device includes: a small cleaning pipe with an allowable flow rate greater than the overheat escape pipe in parallel The overheating escape pipe is connected by way, and a small cleaning solenoid valve is provided in the above small cleaning pipe; a water level detector is provided in the exhalation tank for detecting the height of the internal water storage; and a processing connected to the water level detector So that when the height of the water stored in the exhalation tank is lower than a washing water level, the pump operation is started, and the small washing solenoid valve is opened to conduct, thereby cleaning foreign objects that may exist in the bottom valve.

Description

Fire-fighting pump machine can ensure the bottom valve cleaning device and the fire-fighting system with the device

The invention relates to a cleaning device, in particular to a device for ensuring a fire pump pump and a bottom valve cleaning device and a fire protection system with the device.

For public places or buildings such as buildings, mansions, factories, schools, stations or hospitals, fire-fighting equipment is one of the necessary facilities. Fire-fighting regulations also stipulate buildings in various places with different floor areas whose floor area exceeds a certain area. All kinds of automatic fire extinguishing equipment must be installed in accordance with the provisions of [Standards for the Installation of Fire Safety Equipment in Various Locations]. The automatic fire extinguishing equipment mainly consists of water system fire extinguishing equipment, accounting for more than 90%; including indoor fire hydrant fire extinguishing equipment, outdoor fire hydrant fire extinguishing equipment, automatic sprinkler fire extinguishing equipment, water mist automatic fire extinguishing equipment, foam automatic fire extinguishing equipment, So that the fire can be extinguished at the first time when the fire occurs, or at least the fire can be controlled before the firefighters arrive to avoid spreading. For the above-mentioned common fire-fighting systems that use water as a fire extinguisher, in addition to the need to set up sufficient water source capacity, and to ensure that there is sufficient pressure to extinguish the fire when the system in the pipe is activated, it is also necessary to set up a fire pump automatic pressurization unit.

The traditional fire fighting system is shown in Figures 1 to 4. The fire fighting system includes a roof water tank 11, a fire pump unit 12, a water suction pipe 13, a fire pressure piping 14 and a fire fighting equipment 15, etc., used as a fire pump in the event of a fire The system removes the water stored in the waterproof pond 16 for fire extinguishing. Although the roof water tank 11 is located at the highest point of the place, but its purpose is only to supplement the water in the fire pressure piping 14 and fire fighting equipment 15, the regulations require that its capacity only reach 0.5 tons to 1 ton. It is sufficient to go up, not for fire extinguishing; therefore, in order to increase the area of the building and stabilize the center of gravity of the building, most of them choose to set the fire pond 16 below the ground, even below the underground parking lot, and pump the fire The unit 12 is located above the fire fighting pond. Because the fire fighting pond 16 has a certain depth, a downward drawing water pipe 13 is required for the fire pump unit 12 to draw the fire fighting water in the fire fighting pond 16 upward. The bottom of the dip tube 13 is equipped with a bottom valve 17, and its purpose is to allow water to flow only from the fire pit 16 to the dip tube 13, and cannot flow back from the dip tube 13 back to the fire pit 16, and to ensure the bottom valve 17, the dip tube The pumping pipeline between 13 and the fire pump suction port is filled with fire water at any time, so the fire pump unit is equipped with a water trough 21 device as shown in FIG. 4 as a damage to the water blocking part of the bottom valve 17 or the water pump 13 is eroded and leaks. When the phenomenon occurs, replenish its water leakage to prevent the suction pipe between the suction pipe 13 and the pump 20 from entering the air due to the reduced water volume to form bubbles, resulting in the pump 20 being unable to pump and pressurize the fire, or even damage the pump blades.

Please refer to the schematic diagrams of the fire pump unit 12 in FIGS. 3 and 4 at the same time. In order to clearly express the invention of the present case, for the minor parts of the fire pump unit 12, such as check valves, water production valves, details in each pipeline Switches and the like are omitted in subsequent drawings. The fire pump unit 12 includes a pump 20, a water trough 21, an overflow pipe 22, an overheat escape pipe 23, a performance test pipe 24, a pressure drum 25, a water supply pipe 28, a control panel 26 connected to an external switchboard 27, and a pump 20 The water from the fire fighting pool 16 is drawn toward the fire fighting pressure piping 14 via the water suction pipe 13 and the bottom valve 17 extending into the fire fighting pool 16. The pressure barrel 25 is connected to the fire pressure piping 14, and its main function is to ensure that the pipeline between the check valve of the fire pump unit and the fire pressure piping 14 and the fire fighting equipment 15 has a certain fire extinguishing pressure, through its attached pressure switch and fire control The panel is connected to the wiring, so that the fire extinguishing system is in an automatic state; if the aforementioned pressure line is extinguished by the fire until the pressure drops to the system starting pressure value, the fire pump is automatically started to pressurize the water supply for extinguishing. Due to the traditional technology of fire pump control In the automatic state, if the pressure of the pressure tank is reduced to the starting pressure value and the pump 20 is running, in order to provide the fire fighting equipment 15 with a normal and stable fire extinguishing pressure and water volume, the control mode of "automatic start and manual stop" is adopted. In other words, under automatic operation, when no operation is performed, the pump 20 will not stop automatically as long as it runs automatically. Someone must go to the fire pump control panel to stop the pump 20 manually, even if the fire pressure piping 14 has been installed. The pressure between the device 15 and the pressure barrel 25 is pressurized to above the stop pressure value. However, after the pump starts 20, the fire pump control panel 26 will be connected to the external switchboard 27 to warn the personnel in the central control room or guard room to remind the personnel in the central control room or guard room to observe whether fire is caused by fire in the building. The equipment 15 sprayed water or the fire pressure pipeline 14 leaked or the fire pump was started due to human negligence. If the pressure is abnormal, then the fire pump unit is manually stopped after confirming that the fire pressure is normal.

Of course, in order to avoid the disconnection of the electric control warning line between the fire pump control panel 26 and the external switchboard 27 or the external switchboard 27 shutting down or shutting off the warning sound due to various other factors, the fire automatic pressurized pump units are equipped with overheating escape piping ( (Also known as a temperature rise prevention device), once the pump 20 is abnormally started automatically, if the fire pressure piping 14 or fire fighting equipment 15 is in a normal state and there is no water leakage, at least a part of the small amount of water passes through the restriction hole of the overheat escape pipe 23 Flow to the water trough and then into the pool. To prevent the continuous operation of the fire pump, and the water inside the pump body cannot flow out, so that the blades continue to rub and generate heat and eventually damage the pump blades or burn the motor coil connected to the pump and short circuit.

The current fire automatic pressurized pump units are all equipped with a 100-liter capacity water-filled water trough 21, which is usually automatically filled with water from an external pressure water source through a float, and is equipped with fire control The (circuit) level switch 29 connected to the disk 26 and the external switchboard 27, once the dip tube is soaked for a long time, it will cause oxidative erosion and leakage, or the foreign objects in the pool will fall on the stop of the bottom valve 17, or the bottom valve will be deformed or made of material. Due to aging and elastic fatigue, the stopper cannot be closed, so that If the water in the suction pipe 13 leaks backwards towards the fire fighting pool, the water in the water calling tank 21 can be replenished from the water supply pipe 28 through the pump 20 to the leaking point of the suction pipe 13 or the bottom valve 17 through the principle of gravity to ensure the bottom valve 17. The pumping pipe between the pumping pipe 13 and the pump 20 is filled with water at any time to avoid causing air to enter the pipe and cause the problem that the fire water cannot be drawn smoothly during a real fire.

However, if the water leakage at the end of the water suction pipe 13 is greater than the water intake of the water trough 21, the water level of the water trough 21 is reduced to the low water level action value of the level switch 29 because the fire pump pumping and pressurizing function has been compromised. Wiring, the water shortage alarm light of the fire control panel 26 lights up and the water shortage buzzer sounds, and transmits the water shortage signal to the external switchboard 27 to alert the personnel in the central control room or guard room to remind the central control room or guard room The personnel should go to the fire pump side as soon as possible to observe and check the cause of the leakage and carry out subsequent improvement measures.

After understanding in detail the main components of the aforementioned fire automatic fire extinguishing system and various operating principles and abnormal protection methods, we know that the entire fire automatic fire extinguishing system still has two problems of improvement. The first problem is in the entire fire automatic fire extinguishing system. The pressure pump is the part of the heart, and the dip tube and bottom valve determine the life and death of the heart.

If the bottom valve is stuck open by foreign objects in the water, or the suction pipe is corroded and severely punctured, the flow of the water in the suction pipe back to the fire fighting pool is greater than the replenishment speed of the water injection tank 21 or the water injection of the water tank 21 If the float is faulty and the water injection pipe is closed, even if the water leakage is not large, it will still cause the water in the water trough to continue to drain. Even if there is an alarm, it may still cause the water trough to evacuate in a short time (about 10 minutes). At this time, the air will flow into the pump 20 and the suction pipe 13 (above the full water level of the fire tank) due to atmospheric pressure from the bottom water supply pipe 28 of the water trough 21, causing the system to be unable to pump and pressurize and become disabled, because the building management personnel Most of them can't handle it by themselves. After finding the problem, please ask professional fire service personnel to come to investigate and quote, and then negotiate and prepare materials to complete the repair. The process often exceeds more than a week. During the maintenance of empty windows, the fire sprinkler system is disabled and cannot pressurize the water supply to extinguish the fire. In the event of a fire, the building is actually extremely dangerous.

The second problem lies in the "automatic start, manual stop" control method adopted in the automatic fire extinguishing system. Because the control panel of all fire automatic fire extinguishing systems in the building is connected to the external switchboard 27 due to the lack of water alarm and operation alarm lines, most of the external switchboards 27 are composite fire alarm switchboards, such as fire alarm systems and emergency smoke exhaust systems. , Fire sprinkler, foam fire extinguishing system, etc. combined with shared switchboard. As the number of switchboards' monitoring and control is increasing, the number of wiring also increases synchronously, so the cause of abnormalities such as disconnection or false alarms is increased by multiples. Based on such abnormal reasons, the external switchboard 27 will switch the switchboard due to the aforementioned reasons The warning sound is turned off. Because the fire-fighting automatic pressure pump unit in the basement of the building must be set in a one-hour fire zone, the sound insulation is good, and the volume of the pump is difficult to detect when it is turned off. The road did not actually evacuate the air in the pipe when the construction was completed, and the air molecules gradually flowed out of the pipe due to the low density, causing the pressure loss of the pipe system and causing the pressure switch of the pressure barrel 25 to start the fire pump to pump and pressurize After no one knows and fails to manually stop the operation of the fire pump, the pumped water can only be injected into the exhalation tank through the restrictor hole of the overheat escape pipe, and then flow into the fire pool through the overflow pipe of the exhalation tank Since the water in the overheating escape pipe has been increased due to the work of the pump 20, and the pump room is closed and not ventilated due to the fire zoning, the water in the fire pool 16 returns due to the continuous heating of the pump 20. The pump 20 flows to the overheating escape pipe 23, the water trough 21, and the overflow pipe 22 flows back to the fire pit 16, so the fire pump unit 12 continues to run for a long time, the water temperature continues to rise, and even the pump unit 12 burns The situation has been heard from time to time. In addition, the continuous operation of the pump 20 will definitely consume a lot of electricity. It is also a huge expenditure for building residents, especially in today's society where electricity is gradually lacking and energy saving is everywhere.

In particular, the bottom valve 17 and the dip tube 13 are deeply buried in the water for a long time, and the dip tube 13 must be oxidized and rusted to form iron scale. Even if the management personnel are serious and responsible, they are willing to monitor the alarm and deal with it at any time, but on the one hand, the water depth is difficult to inspect It is also impossible to ask divers to clean up. On the other hand, if it is only to remove the iron scale stuck in the foreign matter dip tube 13 of the bottom valve, it takes manpower and time to remove the bottom valve 17 and the dip tube, and even needs to destroy the cement of the fixed dip tube , Also does not meet the cost of maintenance.

In addition to the above conditions, the bottom valve and the suction pipe have been soaked in water for a long time, the stopper of the bottom valve has been damaged, and the stopper rubber seal has been deformed. These problems may cause water leakage in the suction pipe. As a result, the entire fire-fighting system cannot be operated. Although a small amount of water leakage will not immediately cause the system to be inoperable, if the water leakage continues, the water stored in the water trough 21 will always flow to the fire-fighting pond through the water supply pipe 28 and the water suction pipe 13. The external pressure water source on the primary side of the water trough 21 also injects water into the water trough through the float, in addition to wasting water, even the entire fire pump room is flooded.

When the pump 20 is started for pumping and pressurized water supply, based on the "automatic start, manual stop" control mode, if the pressure piping 14 or fire fighting equipment 15 is in a normal state and there is no water leakage or water discharge, if no one adopts manual mode to stop the pump ; The continuous work of the pump blades to rub the heat-generating water can only flow through the superheat escape pipe 23 to the exhalation tank 21, and at the same time because the overheat escape pipe 23 is in the normal state to open the conduction state, in order to ensure that the pump is normally extinguished Due to the required pressure value and water output, the piping between the superheat escape pipe 23 and the exhalation trough 21 must also be provided with a restricting orifice device whose aperture is much smaller than the diameter of the superheat escape pipe 23, because the water level of the exhalation trough 21 is usually full of water In the state, the hot water flowing to the exhalation tank 21 through the overheating escape pipe 23 is immediately returned to the pool through the overflow pipe 22. Therefore, another purpose of the water calling tank 21 in this example is to provide a relay water tank for heat dissipation of the pump 20. It can also be used as a maintenance personnel to visually confirm whether the action of the overheating escape pipe 23 and the function of the restricting hole are normal through the water calling tank 21 to prevent The blocked orifice restricts the pump from overheating damage and even burns the motor coils, causing the fire extinguishing system to be disabled.

On the outlet side of the pump 20, a performance test pipe 24 is provided. The performance test pipe 24 is equipped with a flow adjustment valve and a flow meter for testing the flow rate of the pump 20 water. During the test, the water will pass through the bottom valve 17 and the suction pipe 13 The pump 20 flows through the performance test piping 24 and finally flows to the fire pit 16.

Therefore, how to solve the above-mentioned first fire bottom valve and water leakage problem of the pumping pipeline, so that small problems do not lead to large risks, and the bottom valve can even be further cleaned and foreign objects removed to ensure that the fire water system automatic fire extinguishing system is in a normal state; By opening a small amount and a large amount of cleaning in sequence, the risk that the fire protection system cannot be operated due to the inability of the bottom valve or the dip pipe is eliminated. At the same time, the "automatic start and manual stop" control method must be adopted for the fire pressure piping in the second fire automatic fire extinguishing system. When the fire automatic fire extinguishing equipment is extinguished, its fire extinguishing pressure and flow rate are stable and meet the requirements of fire regulations. It is a waste of electricity, and at the same time, it can ensure that the automatic fire extinguishing system of the fire water system is normal, which is the direction of improvement.

In view of the above shortcomings, the object of the present invention is to provide a fire pump safety device and bottom valve cleaning device, which can set the weekly or monthly timing to automatically clean the bottom valve and the cleaning valve according to the environmental characteristics of the place. The water pipe keeps the system at a specific time by hydraulic flow to remove the adhesion of rust in the water pipe, prevent foreign objects from getting stuck in the bottom valve, and keep the function of the bottom valve normal.

Another object of the present invention is that when a foreign object gets stuck in the bottom valve stop and causes water leakage, when the water injection volume of the water trough is lower than the water leakage of the suction pipe or the bottom valve, the fire pump operation and the small cleaning pipe solenoid valve can be started Turn on, draw the water from the fire pool by pumping and pressurize it, then flow to a small amount of water The pipe replenishes multiple water to the exhalation tank. When a fire pump is running, due to the water leakage phenomenon, the reaction force of the pump pumping pressure has been offset by the non-leakage. At the same time, the water injection volume of the exhalation tank is also doubled, so that the entire fire protection system still maintains normal function.

Another object of the present invention is to prolong the follow-up reaction and maintenance time of the personnel in the central control room, guard room or maintenance personnel when the water shortage alarm has been maintained in the normal functional state, so that the automatic fire extinguishing system has no Failure window period.

Still another object of the present invention is to provide an independent voice horn warning system that can warn people around by using a separate voice horn connected to the device and installed outside the machine room when the bottom valve or dip tube leaks and the water level of the water trough drops. In order to avoid the risks caused by the failure of the external switchboard, the personnel in the central control room and the guard room cannot perceive.

Another object of the present invention is to improve the "automatic start, manual stop" control method. After the pressure of the fire pump pressure piping system is reduced and the fire pump is started, the original "manual stop" method is changed to "automatic stop after a certain time (such as three minutes) or manual stop by the person after pressure holding". Ensure that after the fire pump is automatically started, if the external switchboard failure cannot be warned or the person negligently fails to reach the fire pump control panel in time to manually stop the pump, the pump will automatically stop at a specific time after the pressure of the pressure piping system reaches the legal pressure Pump operation (re-time if there is any pressure drop within 3 minutes), to prevent the fire pumps in the fire engine room from being damaged by heat, and save power waste.

In order to achieve the above object, the present invention provides a fire-fighting pump machine capable of ensuring and bottom valve cleaning device for maintaining the water pressure in a fire fighting system and cleaning a bottom valve in the fire fighting system. The fire fighting system is for drawing in a fire fighting tank Water storage, the fire fighting system has at least one water-receiving trough for receiving an external water supply, a pump and a pumping pipe connected to the pump, and the pump is connected to the upper A performance test piping of the fire fighting pool, and at least one overheating escape pipe leading to the water exhalation tank and the pump; the pumping pipe extends into the fire fighting pool and the end away from the pump leads to the bottom valve, the pump The water stored in the fire fighting pool is drawn through the bottom valve and the water suction pipe. The water exhalation tank has at least one overflow pipe connected to the fire fighting pool. The device includes: a small cleaning pipe with an allowable flow rate greater than the overheating escape pipe. The superheating escape pipe is connected in parallel, and a small cleaning solenoid valve is arranged in the above small cleaning pipe; a water level detector is provided in the water exhalation tank for detecting the height of the internal water storage; one is connected to the water level detector The processor is such that when the height of the water stored in the exhalation tank is lower than a washing water level, the pump operation is started, and the small washing solenoid valve is turned on to clean the foreign objects that may exist in the bottom valve.

The invention also provides a fire-fighting system with a fire-fighting pump function and a bottom valve cleaning device, which is connected to a fire-fighting piping system. The fire-fighting system is used to extract the water stored in a fire-fighting pool and maintain the water pressure of the fire-fighting system stable. The fire-fighting system includes: a pump to provide power for pumping up the water stored in the fire-fighting pool; a water-draining tube connected to the pump, the water-draining tube extending into the fire-fighting pool and leading away from the pump A bottom valve for the pump to draw the water stored in the fire fighting pond; at least one water calling trough that receives an external water supply, the water calling trough has at least one overflow pipe connected to the fire fighting pond, and the water calling trough supplies the pump Water storage in the water pipe; an overheated escape pipe that leads the pump and the water trough to prevent the water temperature of the fire fighting system from rising; a performance test pipe that leads the pump and the above-mentioned fire fighting pool to test the The function of the fire protection system; a fire pump can ensure the cleaning device with the bottom valve. The device includes a small cleaning pipe with an allowable flow greater than the above-mentioned superheat escape pipe. The superheat escape pipe is connected in parallel. The small cleaning pipe is provided with a Small cleaning solenoid valve; a water level detector, which is installed in the exhalation tank for detecting the height of the internal water storage; a processor connected to the water level detector, so that when the When the height of the water stored in the exhalation tank is lower than a cleaning water level, the pump operation is started, and the small cleaning solenoid valve is opened to conduct, thereby cleaning foreign objects that may exist in the bottom valve.

Compared with the conventional technology, the fire pump disclosed by the present invention can ensure that the bottom valve cleaning device and the fire fighting system with the device supplement the water level of the exhalation tank with small cleaning pipes and ensure that the water storage of the suction pipe is normal, so that the fire The pressure water supply system is effectively maintained, and it also achieves the effect of cleaning the bottom valve and the iron scale in the suction pipe with two different water flows at the same time with the large cleaning pipe. In addition, because the device of the invention has a "automatic stop after a certain time delay after pressure retention or "Manual stop" dual-stop mode function, optimize the operation function of automatic fire start and stop, prevent each fire pump in the fire engine room from being damaged by heat, and save power waste. Significantly eliminate the risk of loss of system function; at the same time, it can maintain the water pressure of the pipeline for a long time before the maintenance personnel go to the site for maintenance, so that the fire protection system can continue to operate, delay the occurrence of empty windows, and greatly improve the fire protection system The overall safety and reliability achieve the purpose of cost invention.

11‧‧‧ Roof water tank

12‧‧‧Fire pump unit

13‧‧‧Drainage pipe

14‧‧‧Fire pressure piping

15‧‧‧Fire equipment

16‧‧‧Fire Pool

17‧‧‧Bottom valve

20‧‧‧Pump

21‧‧‧Water trough

22‧‧‧Overflow pipe

23‧‧‧Overheat escape tube

24‧‧‧Performance test piping

25‧‧‧pressure barrel

26‧‧‧Control panel

27‧‧‧ Switchboard

28‧‧‧ Water supply pipe

29‧‧‧Liquid level switch

31‧‧‧Small cleaning piping

32‧‧‧Small cleaning solenoid valve

33‧‧‧Water level detector

34‧‧‧ processor

35‧‧‧pressure detector

36‧‧‧Inlet float valve

40‧‧‧Amplifier

51‧‧‧Large cleaning piping

52‧‧‧All open valve

53‧‧‧Large cleaning solenoid valve

54‧‧‧Timer

55‧‧‧Counter

30、50‧‧‧Fire pump function guarantee and bottom valve cleaning device

Figure 1 is a schematic diagram of a prior art fire fighting system.

FIG. 2 is an architecture diagram of the fire fighting system of FIG. 1.

Fig. 3 is a schematic diagram of the fire pump unit in Fig. 1.

FIG. 4 is a structural diagram of the fire pump unit of FIG. 3.

FIG. 5 is a schematic diagram of a first preferred embodiment of a fire fighting system with a fire pump function and a bottom valve cleaning device.

Figure 6 is a schematic diagram of the connection between the fire pump and the bottom valve cleaning device and the fire protection system.

Fig. 7 is the second best practice of the fire pump function of the case with the bottom valve cleaning device and the fire fighting system Schematic diagram of the embodiment.

Fig. 8 is a schematic diagram of the connection between the fire pump and the bottom valve cleaning device and the fire protection system.

The following describes the implementation of the present invention by specific specific examples, and those skilled in the art can easily understand the advantages and effects of the present invention from the contents disclosed in this specification.

The structure, ratio, size, etc. shown in the drawings of this specification are only used to match the disclosure content of the specification, for those familiar with this skill to understand and read, and are not used to limit the limitations of the invention, Any modification of structure, adjustment of size or change of proportional relationship shall be regarded as within the scope of the present invention without substantial changes in technical content.

The first preferred embodiment of the fire-fighting system with the fire-fighting pump function of the present invention and the bottom valve cleaning device is shown in FIG. 5, and FIG. 6 is a schematic diagram of the connection of the fire-fighting pump function and the bottom valve cleaning device with the fire-fighting system. In this example, the fire pump can ensure that there is a small cleaning pipe 31 connected with the bottom valve cleaning device 30 in parallel to the overheat escape pipe 23. The allowable flow rate of the small cleaning pipe 31 is greater than that of the overheat escape pipe 23. The small cleaning pipe 31 is provided with a small Cleaning solenoid valve 32.

The water calling tank 21, which is normally kept by the water inlet float valve to keep the tank full of water, is provided with a water level detector 33. When the bottom valve 17 and the water suction pipe 13 leak, the water calling tank 21 will automatically make up water for the water suction pipe 13 The water float valve 36 also simultaneously fills the water calling trough 21 with water; however, if the water leakage of the bottom valve 17 and the suction pipe 13 is greater than the water inlet of the water trough 21, the water in the water calling trough 21 is stored When the height drops, the water level detector 33 will detect the height of the internal water storage, and perform alarms or cleaning the bottom valve according to the two preset water level heights; when the water level of the water trough 21 is lower than the alarm level of water shortage and higher than When cleaning the water level, the water level detector 33 simultaneously sends a notification signal about the water level to the processor 34. The processor 34 immediately sends an alarm notification signal to the control panel 26 and sends The external switchboard 27 sends out a water shortage alarm message, and the processor 34 directly drives the voice microphone 40 to sound to notify the maintenance personnel to come to the scene as soon as possible to check; if the water level of the water trough 21 continues to drop below the cleaning water level, In addition to continuing the aforementioned warning function, the processor 34 immediately starts the pump 20 and opens the small cleaning solenoid valve 32 to conduct the small cleaning function mode. At this time, the water stored in the fire pool 16 will flow through the bottom valve 17 The water suction pipe 13, the pump 20, and the small cleaning pipe 31 flow to the water exhalation tank 21 to make up water, to avoid the water storage of the water exhalation tank 21 being lost due to water replenishment and the external water replenishment is not enough, and at the same time, the water at the bottom valve 17 makes the bottom valve 17 The foreign objects can be washed away or removed by the current.

In this example, a pressure detector 35 is provided for detecting the pressure in the fire pressure piping 14 and connected to the processor 34 as the fire pump function to ensure that the bottom valve cleaning device is in the cleaning function mode When it is detected that the pressure in the pipe on the fire pressure piping has decreased to the value of the automatic starting pressure of the fire pump, stop the small cleaning solenoid valve 32 to conduct, then all the fire water after drawing and pressurizing can only flow to the fire pressure piping 14. Ensure the principle of disaster prevention priority. The installation structure of the water level detector 33 and the pressure detector 35 can be set by themselves or shared with the existing detectors of the original fire protection system.

As shown in FIGS. 7 and 8, in the second embodiment of this case, in addition to the same components and structure as the previous example, a timer 54 and a counter 55 are also provided, and the fire pump can ensure cleaning with the bottom valve The device 50 further has a large cleaning pipe 51 with a pipe diameter larger than that of the small cleaning pipe 31, and is connected in parallel to the performance test pipe 24. A large opening valve 52 is provided in the large cleaning pipe 51. The valve 53 is connected to the overflow pipe 22, and the conduction state of the all-open valve 52 is interlocked by the large cleaning solenoid valve 53. Of course, in addition to being connected in parallel to the performance test piping 24, the large cleaning piping can also be configured by connecting the water outlet of the pump 20 at one end and the fire pond 16 or the secondary outlet side of the performance testing piping 24 at the other end.

The timer 54 and the counter 55 mentioned above are the conditions for turning on the large cleaning solenoid valve 53. When the system is in the small cleaning mode, the timer 54 and the counter 55 are used to record the small cleaning solenoid valve 32 per unit time. The cumulative number of stops after 3 minutes of each conduction. If the cumulative number of conductions per unit time reaches a large cleaning threshold, turn on the large cleaning solenoid valve 53 to perform large flow cleaning, strengthen the cleaning function, and specify The time (for example, three minutes) stops; for example, when the water storage in the water trough 21 is lower than the cleaning water level, the small cleaning solenoid valve 32 has been opened five times within two hours, but the storage water is still below the cleaning water level, and the processor 34 will open The large cleaning solenoid valve 53 conducts for three minutes, and the large cleaning piping 51 conducts. In this example, when the large cleaning pipe 51 is turned on, the small cleaning pipe 31 also maintains a conductive state, so that the flow rate of the flushing bottom valve 17 can maintain the maximum value. Of course, only the large cleaning pipe 51 can be turned on and the small cleaning pipe 31 can be closed as required.

In the first and second embodiments, after the pump 20 is started, if the external switchboard failure cannot be warned or the person negligently fails to reach the control panel 26 to stop the pump 20 manually, the pressure in the fire pressure piping 14 reaches the pressure detection After the rated pressure of the detector 35 stops for 3 minutes, the processor 34 will automatically stop the pump 20 to prevent the pump 20 in the fire engine room from being damaged by heat, and save power at the same time. If the above pressure value is connected to the original fire pressure piping 14 The pressure detector 35 connected to the pressure barrel is used for common detection. In order to make the fire extinguishing function work normally, when the pressure line 14 is depressurized or the fire fighting equipment acts to spray water to extinguish the fire, the pressure detector 35 detects the detection and sends a signal to the processor, then the processor 34 starts the pump 20 and turns off the small The cleaning solenoid valve 32 and the large cleaning solenoid valve 53 enable the water source to flow completely to the fire fighting equipment for fire extinguishment: while the processor 34 is used as the system in the automatic state, the control mode of "automatic start, pressure holding delay and automatic stop" is professional. Personnel can also stop the pump 20 by manual stop in the starting state, and when the fire pump is further in the automatic state, the original "automatic start, manual stop mode" function, and then add "automatic start, holding pressure delay At a specific time (for example, three minutes), it will automatically stop" function and reach the double stop mode.

The above-mentioned first embodiment is suitable for a place where a maintenance person usually resides in the usage place, while the above-mentioned second embodiment is suitable for a place where no maintenance person is usually used in another usage place.

The fire pump in this case can ensure that the bottom valve cleaning device can effectively maintain the water pressure in the fire protection system and clean the foreign objects at the bottom valve, so that the leakage of the bottom valve can be quickly eliminated. By controlling the small cleaning pipe or the large cleaning pipe Conduction, with different sizes of water flow to flush out the foreign objects that may exist in the bottom valve, restore the water pressure of the fire fighting system to normal, and at the same time prevent the water in the water trough from continuing to flow to the fire pond and synchronize with the water inlet float valve of the water trough The bi-directional replenishment of the water trough can maintain the function of full water in the water trough; if there is a water leakage problem that cannot be eliminated, the fire fighting system can also maintain basic functions until the maintenance personnel are present to eliminate the problem.

However, the above are only preferred embodiments of the present invention, and cannot limit the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the description should still be It is within the scope of the present invention. After the description of the preferred embodiments of the present invention, those familiar with this technical field should be able to understand that this case is indeed a novel, progressive and industrially practical invention, which is of great development value.

14‧‧‧Fire pressure piping

16‧‧‧Fire Pool

20‧‧‧Pump

21‧‧‧Water trough

22‧‧‧Overflow pipe

23‧‧‧Overheat escape tube

24‧‧‧Performance test piping

26‧‧‧Control panel

31‧‧‧Small cleaning piping

32‧‧‧Small cleaning solenoid valve

33‧‧‧Water level detector

34‧‧‧ processor

35‧‧‧pressure detector

40‧‧‧Amplifier

51‧‧‧Large cleaning piping

52‧‧‧All open valve

53‧‧‧Large cleaning solenoid valve

54‧‧‧Timer

55‧‧‧Counter

50‧‧‧Fire pump function guarantee and bottom valve cleaning device

Claims (9)

A fire pump can guarantee the bottom valve cleaning device for maintaining the water pressure in a fire fighting system and cleaning a bottom valve in the fire fighting system. The fire fighting system is for drawing water stored in a fire fighting pool. The fire fighting system has At least one water-receiving tank that receives an external water supply, a pump and a suction pipe connected to the pump, a performance test piping that guides the pump and the fire-fighting pool, and at least guides the water-receiving tank and the pump An overheating escape pipe; the pumping pipe extends into the fire fighting pool and the end away from the pump leads to the bottom valve. The pump draws the water stored in the fire fighting tank through the bottom valve and the pumping pipe. At least one overflow pipe connected to the fire fighting pool, the device includes: a small cleaning pipe with an allowable flow rate greater than the above-mentioned overheating escape pipe, the superheating escape pipe is connected in parallel, and a small cleaning solenoid valve is provided in the small washing pipe; A water level detector is installed in the water trough for detecting the height of the internal water storage; a processor connected to the water level detector makes the water storage level in the water trough lower than a washing water level, The pump operation is started, and the above small cleaning solenoid valve is turned on, thereby cleaning foreign objects that may be present at the bottom valve. The fire pump as described in item 1 of the patent application scope can be ensured with the bottom valve cleaning device, and further includes at least one large cleaning pipe with a diameter larger than the above small cleaning pipe, and the above performance test piping is connected in parallel, and the large cleaning pipe A uniform opening valve is arranged inside, and the uniform opening valve is connected to the overflow pipe through a large cleaning solenoid valve, and the conduction state of the uniform opening valve is linked by the large cleaning solenoid valve. The fire pump as described in item 2 of the scope of patent application can be ensured with the bottom valve cleaning device, and further includes a timer and a counter for recording the above small cleaning solenoid valve per unit time The cumulative number of conductions enables the conduction of the large cleaning solenoid valve when the cumulative number of conductions of the small cleaning solenoid valve per unit time reaches a large cleaning threshold. The fire pump as described in item 3 of the patent application scope can be ensured with the bottom valve cleaning device, wherein the timer is automatically connected to the processor periodically for the processor to start and stop the large cleaning solenoid valve. The fire pump as described in item 1 of the patent application scope can be ensured with the bottom valve cleaning device, wherein the processor is connected to a loudspeaker for when the height of the water storage in the exhalation tank is lower than an alarm level The loudspeaker is driven by the processor to issue a water shortage warning sound. A fire-fighting system with a fire-fighting pump can ensure that it is connected to a bottom valve cleaning device. It is connected to a fire-fighting piping system. The fire-fighting system is used to extract water stored in a fire-fighting pool and maintain the water pressure of the fire-fighting system. The fire-fighting system includes : A pump, which provides the power for pumping up the water storage in the fire fighting pool; a pumping pipe connected to the pump, the pumping pipe extends into the fire fighting pool and the end away from the pump is connected to a bottom valve , For the pump to draw the water stored in the fire fighting tank; at least one water receiving tank that receives an external water supply, the water calling tank has at least one overflow pipe connected to the fire fighting pool, and the water calling tank is used to replenish the storage in the water pumping pipe Water; an overheated escape pipe that leads the pump and the water trough to prevent the water temperature of the fire fighting system from rising; a performance test pipe that leads the pump and the above fire tank to test the fire The function of the system; a fire pump can ensure the cleaning device with the bottom valve. The device includes a small cleaning pipe with an allowable flow rate greater than the above-mentioned superheat escape pipe. The superheat escape pipe is connected in parallel. The above small cleaning pipe is provided with a small Cleaning solenoid valve; a water level detector, which is installed in the exhalation tank for detecting the height of internal water storage; a processor connected to the water level detector, so that when the height of the water storage in the exhalation tank is less than one When cleaning the water level, the pump operation is started, and the small cleaning solenoid valve is turned on to clean the foreign objects that may exist at the bottom valve. As stated in item 6 of the patent application scope, the fire pump system with a fire pump can ensure the bottom valve cleaning device, wherein the device further includes at least one large cleaning pipe with a diameter larger than the above small cleaning pipe, and the above performances are connected in parallel For the test piping, a one-piece open valve is provided in the large-scale cleaning pipe. The one-piece open valve is connected to the overflow pipe through a large-scale cleaning solenoid valve. The conduction state of the one-piece open valve is interlocked by the large-scale cleaning solenoid valve. As stated in item 6 of the patent application scope, a fire protection system with a fire pump that can ensure the bottom valve cleaning device, wherein the device further includes a timer and a counter for recording the above small cleaning solenoid valve per unit time The cumulative number of conductions enables the conduction of the large cleaning solenoid valve when the cumulative number of conductions per unit time that the small cleaning solenoid valve is conducting reaches a large cleaning threshold. As described in item 6 of the patent application scope, the fire protection system with a fire pump that can ensure the bottom valve cleaning device further includes a loudspeaker, where the water level detector is set with an alarm water level, Therefore, when the height of the water stored in the water trough is lower than the alarm water level, the loudspeaker is driven by the processor to emit a water shortage warning sound.

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