Fire pump pressure maintenance system

Abstract

The utility model relates to fire fighting equipment and water supply steady voltage technical field, concretely is fire pump steady voltage system, including the main water delivery pipeline of intercommunication in fire pump, install one pressurizing pump on the main water delivery pipeline, install one pressure relief tank above the main water delivery pipeline, install one pressure relief pipe with the intercommunication of main water delivery pipeline in the pressure relief tank bottom, open one vertical installation groove in the pressure relief tank inside, and open one intercommunication passage with installation groove intercommunication. The utility model discloses a pressurizing pump and pressure relief tank combination structure are set up on the main water delivery pipeline, and the dynamic steady voltage is realized by the elastic deformation of airbag. When the main pipeline pressure exceeds threshold value, the water flows through the pressure relief pipe and lifts the sealing plate to compress the airbag, converts the excess pressure into the gas potential energy in the airbag, and after the airbag is compressed to a certain degree, the installation groove and the intercommunication passage are communicated, that is, drainage pressure relief can be carried out through the intercommunication passage. When the pressure is insufficient, start the pressurizing pump to supplement the pipeline pressure.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment and water supply pressure stabilization technology, specifically a fire pump pressure stabilization system. Background Technology

[0002] In fire protection systems, fire pumps, as core water supply equipment, directly affect the fire extinguishing effect and the safety of fire protection equipment due to the stability of their output pressure. During operation, existing fire pump systems often experience drastic pressure fluctuations in the water supply pipeline due to factors such as sudden changes in water consumption, fluctuations in pipeline resistance, and pump start-up and shutdown switching. Excessive pressure can cause leaks at pipe connections, valve damage, or even pipe bursts, shortening equipment lifespan; conversely, insufficient pressure can lead to inadequate water nozzle range and insufficient water pressure at fire hydrants, failing to meet fire extinguishing needs and posing serious safety hazards.

[0003] Existing technology includes a fire pump pressure stabilizing device disclosed in patent application number CN202322345907.9, which relates to the field of fire pump technology. The device includes a pressure stabilizing frame, a bearing shaft, and a bearing support plate. The pressure stabilizing frame has docking side frames fixedly installed at both ends, and mounting blocks are fixedly installed on the sides of the frame. The bearing shaft is rotatably mounted inside the pressure stabilizing frame, and an assembly support sleeve is fixedly sleeved on its outer side. The bearing support plate is fixedly installed at both ends of the side of the pressure stabilizing frame, and a limit groove is provided on the side of the support plate. A resistance gear can limit the rotational speed of the transmission gear, thereby limiting the rotational speed of the transmission gear on the linkage gear, and enabling the bearing shaft to stabilize the pressure of the pump. The plate provides a resistance-based rotating support, allowing the load-bearing shaft to work with the stabilizing blades to limit and block the flow rate, enabling fire pumps of different flow rates to deliver a stable and pressure-stabilized water volume. However, this technical solution uses a single pressure relief valve or pressure stabilizing tank for pressure regulation, which has significant limitations: systems using pressure relief valves can only passively release pressure when the pressure exceeds a threshold, failing to address insufficient pressure, and resulting in significant water waste during the pressure relief process; simultaneously, the pressure stabilizing effect of the pressure stabilizing tank depends on the gas pressure inside the tank, requiring frequent gas replenishment and maintenance when gas leaks or pressure is unbalanced, and its response speed to pressure fluctuations is slow, making it difficult to adapt to the dynamic pressure stabilization requirements under complex operating conditions.

[0004] In view of this, we propose a fire pump pressure stabilization system. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a fire pump pressure stabilization system.

[0006] The technical solution of this utility model is:

[0007] A fire pump pressure stabilization system includes a main water supply pipeline connected to the fire pump, a booster pump installed on the main water supply pipeline, a pressure relief box installed above the main water supply pipeline, a pressure relief pipe connected to the main water supply pipeline installed at the bottom of the pressure relief box, a vertical mounting groove and a connecting channel inside the pressure relief box, an airbag installed inside the mounting groove, a sealing plate fixedly connected to the bottom of the airbag, the outer ring wall of the sealing plate tightly fitting the inner ring wall of the mounting groove, two external connecting pipes installed on the top of the airbag, each external connecting pipe having a one-way valve installed, and a booster air pump installed on one of the external connecting pipes. By setting up a combination structure of a booster pump and a pressure relief box on the main water supply pipeline, dynamic pressure stabilization is achieved using the elastic deformation of the airbag. When the pressure in the main pipeline exceeds the threshold, water flows through the pressure relief pipe, lifting the sealing plate and compressing the airbag. This converts the excess pressure into the potential energy of the gas inside the airbag. After the airbag is compressed to a certain extent, the mounting groove can be connected to the connecting channel, allowing for drainage and pressure relief. If the pressure is insufficient, a booster pump is activated to supplement the pipeline pressure. The bidirectional external pipe, in conjunction with the booster pump and one-way valve, allows for adjustment of the initial airbag pressure as needed, adapting to pressure stabilization requirements under different operating conditions and preventing pressure fluctuations from impacting fire-fighting equipment.

[0008] As a preferred technical solution, a first pressure sensor is installed inside the main water supply pipeline, and a second pressure sensor is installed inside the airbag. The first pressure sensor detects the actual water pressure in the pipeline, and the second pressure sensor monitors the air pressure status of the airbag. By comparing the preset value with the measured value, the power of the booster pump or the inflation volume of the airbag is dynamically adjusted.

[0009] As a preferred technical solution, a sinking block is fixedly connected to the bottom of the sealing plate. When the pipeline pressure drops, the sinking block assists the sealing plate to quickly return to its original position, avoiding sealing lag caused by friction or residual deformation of the airbag.

[0010] As a preferred technical solution, a connecting pipe is installed on the top of the pressure relief tank, which communicates with the interior of the connecting channel. The end of the connecting pipe furthest from the pressure relief tank is connected to a temporary storage tank. When the pressure in the main pipeline rises sharply, excess water first enters the temporary storage tank for storage, preventing damage from excessive compression of the air bladder. The temporary storage tank is designed to accommodate the system's peak pressure relief, providing time for maintenance or troubleshooting, while avoiding water waste caused by frequent pressure relief, thus improving system reliability and economy.

[0011] As a preferred technical solution, the top of the temporary storage tank is provided with a water inlet, and a tank cover is hinged to the water inlet. The design of the top water inlet and the hinged tank cover facilitates regular inspection of the water quality and equipment status inside the temporary storage tank, and also allows for the extraction of water from the tank.

[0012] As a preferred technical solution, a drain pipe is installed on the outer wall of the temporary storage box near the bottom, and a drain valve is installed on the drain pipe. When there is too much water in the temporary storage box, the drain valve can be opened to drain the water.

[0013] As a preferred technical solution, two parallel buffer nets are fixedly installed inside the temporary storage tank. Each buffer net has a fixed mesh frame on its outer ring wall, and the outer ring wall of the mesh frame is fixedly connected to the inner wall of the temporary storage tank. When high-pressure water enters, the buffer nets divide the water flow through their mesh openings, converting kinetic energy into frictional heat energy, thus reducing erosion and corrosion of the tank wall.

[0014] As a preferred technical solution, a handle is fixedly installed on the top of the lid, and the handle is U-shaped. The ergonomic design of the U-shaped handle improves the ease of operation of the lid.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a combination structure of a booster pump and a pressure relief box on the main water supply pipeline to achieve dynamic pressure stabilization through the elastic deformation of an air bladder. When the pressure in the main pipeline exceeds a threshold, water flows through the pressure relief pipe, lifting the sealing plate and compressing the air bladder. This converts the excess pressure into the potential energy of the gas inside the air bladder. Furthermore, after the air bladder is compressed to a certain extent, it allows the mounting groove to connect with the connecting channel, enabling drainage and pressure relief. When the pressure is insufficient, the booster pump is activated to replenish the pipeline pressure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the pressure relief box in this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the main water supply pipeline in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the temporary storage box in this utility model;

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Main water supply pipeline; 10. First pressure sensor; 2. Booster pump; 3. Pressure relief tank; 30. External pipe; 31. Check valve; 32. Booster air pump; 33. Airbag; 34. Mounting groove; 35. Sealing plate; 36. Sink block; 37. Connecting channel; 38. Pressure relief pipe; 39. Second pressure sensor; 4. Connecting pipe; 5. Temporary storage tank; 50. Drain pipe; 51. Drain valve; 52. Tank cover; 53. Handle; 54. Water intake; 55. Buffer net; 56. Net frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution:

[0025] The fire pump pressure stabilization system includes a main water supply pipeline 1 connected to the fire pump, a booster pump 2 installed on the main water supply pipeline 1, a pressure relief box 3 installed above the main water supply pipeline 1, a pressure relief pipe 38 connected to the main water supply pipeline 1 installed at the bottom of the pressure relief box 3, a vertical mounting groove 34 and a connecting channel 37 connected to the mounting groove 34 are provided inside the pressure relief box 3, an airbag 33 is provided inside the mounting groove 34, a sealing plate 35 is fixedly connected to the bottom of the airbag 33, the outer ring wall of the sealing plate 35 is tightly fitted to the inner ring wall of the mounting groove 34, two external connecting pipes 30 are installed on the top of the airbag 33, each external connecting pipe 30 is equipped with a one-way valve 31, and a booster air pump 32 is installed on one of the external connecting pipes 30. By setting up a combination structure of booster pump 2 and pressure relief box 3 on the main water supply pipeline 1, dynamic pressure stabilization is achieved by utilizing the elastic deformation of the airbag 33. When the pressure in the main pipeline exceeds the threshold, water flows through the pressure relief pipe 38, lifting the sealing plate 35 and compressing the airbag 33. This converts the excess pressure into the potential energy of the gas inside the airbag 33. After the airbag 33 is compressed to a certain extent, the mounting groove 34 can connect with the connecting channel 37, allowing for drainage and pressure relief. When the pressure is insufficient, the booster pump 2 is activated to supplement the pipeline pressure. The bidirectional external pipe 30, in conjunction with the booster pump 32 and the one-way valve 31, can adjust the initial air pressure of the airbag 33 as needed to meet the pressure stabilization requirements under different operating conditions and prevent pressure fluctuations from impacting fire-fighting equipment.

[0026] In a preferred embodiment, a first pressure sensor 10 is installed inside the main water supply pipeline 1, and a second pressure sensor 39 is installed inside the airbag 33. The first pressure sensor 10 detects the actual water pressure in the pipeline, and the second pressure sensor 39 monitors the air pressure status of the airbag 33. By comparing the preset value with the measured value, the power of the booster pump 2 or the inflation amount of the airbag 33 is dynamically adjusted.

[0027] As a preferred embodiment, a recessed block 36 is fixedly connected to the bottom of the sealing plate 35. When the pipeline pressure drops, the recessed block 36 assists the sealing plate 35 to quickly return to its original position, avoiding sealing lag caused by friction or residual deformation of the airbag 33.

[0028] In a preferred embodiment, a connecting pipe 4 is installed on the top of the pressure relief tank 3, which communicates with the interior of the connecting channel 37. The end of the connecting pipe 4 furthest from the pressure relief tank 3 is connected to a temporary storage tank 5. When the pressure in the main pipeline rises sharply, excess water first enters the temporary storage tank 5 for storage, preventing the airbag 33 from being over-compressed and damaged. The temporary storage tank 5 is designed to accommodate the system's peak pressure relief, providing time for maintenance or troubleshooting, while avoiding water waste caused by frequent pressure relief, thus improving system reliability and economy.

[0029] As a preferred embodiment, the top of the temporary storage tank 5 is provided with a water inlet 54, and a tank cover 52 is hinged to the water inlet 54. The design of the top water inlet 54 and the hinged tank cover 52 facilitates the periodic inspection of the water quality and equipment status inside the temporary storage tank 5, and also allows for the extraction of water from the temporary storage tank 5.

[0030] As a preferred embodiment, a drain pipe 50 is installed on the outer wall of the temporary storage tank 5 near the bottom, and a drain valve 51 is installed on the drain pipe 50. When there is too much water in the temporary storage tank 5, the drain valve 51 can be opened to drain the water.

[0031] In a preferred embodiment, two parallel buffer nets 55 are fixedly installed inside the temporary storage tank 5. Each buffer net 55 has a mesh frame 56 fixedly installed on its outer ring wall, and the outer ring wall of the mesh frame 56 is fixedly connected to the inner wall of the temporary storage tank 5. When high-pressure water flows in, the buffer nets 55 divide the water flow through the mesh, converting kinetic energy into frictional heat energy for consumption, thereby reducing the erosion and corrosion of the tank wall.

[0032] As a preferred embodiment, a handle 53 is fixedly installed on the top of the lid 52. The handle 53 is U-shaped. The ergonomic design of the U-shaped handle 53 improves the ease of operation of the lid 52.

[0033] When the fire pump pressure stabilizing system of this utility model is in use, after the system is started, the first pressure sensor 10 in the main water supply pipeline 1 monitors the actual water pressure in the pipeline in real time, and the second pressure sensor 39 inside the airbag 33 monitors the air pressure status inside the airbag 33 simultaneously. Both sensors feed the monitoring data back to the control system as the basis for pressure regulation. When the water pressure in the main water supply pipeline 1 is within the normal range, the sealing plate 35, under the combined action of the gravity of the sinking block 36 and the initial air pressure of the airbag 33, fits tightly against the mounting groove 34, blocking the connection between the pressure relief pipe 38 and the connecting channel 37, ensuring that the water flow is normally delivered along the main water supply pipeline 1.

[0034] When the water pressure in the main water supply pipeline 1 exceeds the set threshold, the high-pressure water flow will push the sealing plate 35 upward through the pressure relief pipe 38. The sealing plate 35 compresses the air bladder 33, causing it to undergo elastic deformation, converting the excess water pressure into the gas potential energy inside the air bladder 33, thus achieving initial pressure relief and stabilization. If the water pressure continues to rise, after the sealing plate 35 is pushed to a certain height, the installation groove 34 connects with the connecting channel 37, and the excess water flow enters the temporary storage box 5 through the connecting channel 37 and the connecting pipe 4 for temporary storage, preventing the air bladder 33 from being damaged due to excessive compression, and further alleviating the high pressure in the pipeline.

[0035] When the water pressure in the main water supply pipeline 1 is lower than the set threshold, the control system starts the booster pump 2 on the main water supply pipeline 1 according to the feedback signal of the first pressure sensor 10. The booster pump 2 increases the water volume and pressure in the pipeline and quickly replenishes the water pressure to the normal range.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fire pump pressure stabilizing system, characterized in that: The system includes a main water supply pipeline (1) connected to a fire pump, a booster pump (2) installed on the main water supply pipeline (1), a pressure relief box (3) installed above the main water supply pipeline (1), a pressure relief pipe (38) connected to the main water supply pipeline (1) installed at the bottom of the pressure relief box (3), a vertical mounting groove (34) opened inside the pressure relief box (3), and a connecting channel (37) connected to the mounting groove (34) opened. An airbag (33) is installed inside the mounting groove (34), and a sealing plate (35) is fixedly connected to the bottom of the airbag (33). The outer ring wall of the sealing plate (35) is tightly fitted with the inner ring wall of the mounting groove (34). Two external pipes (30) are installed on the top of the airbag (33). A one-way valve (31) is installed on each external pipe (30), and a booster air pump (32) is installed on one of the external pipes (30).

2. The fire pump pressure stabilizing system as described in claim 1, characterized in that: The main water supply pipeline (1) is equipped with a first pressure sensor (10), and the airbag (33) is equipped with a second pressure sensor (39).

3. The fire pump pressure stabilizing system as described in claim 2, characterized in that: A sinker (36) is fixedly connected to the bottom of the sealing plate (35).

4. The fire pump pressure stabilizing system as described in claim 3, characterized in that: The pressure relief box (3) has a connecting pipe (4) installed on its top, which is connected to the inside of the connecting channel (37). The end of the connecting pipe (4) away from the pressure relief box (3) is connected to a temporary storage box (5).

5. The fire pump pressure stabilizing system as described in claim 4, characterized in that: The temporary storage box (5) has a water inlet (54) on the top and a box cover (52) is hinged at the water inlet (54).

6. The fire pump pressure stabilizing system as described in claim 5, characterized in that: A drain pipe (50) is installed on the outer wall of the temporary storage box (5) near the bottom, and a drain valve (51) is installed on the drain pipe (50).

7. The fire pump pressure stabilizing system as described in claim 6, characterized in that: The temporary storage box (5) has two parallel buffer nets (55) fixedly installed inside. Each buffer net (55) has a mesh frame (56) fixedly installed on its outer ring wall. The outer ring wall of the mesh frame (56) is fixedly connected to the inner wall of the temporary storage box (5).

8. The fire pump pressure stabilizing system as described in claim 7, characterized in that: A handle (53) is fixedly installed on the top of the box cover (52), and the handle (53) is U-shaped.

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