A pressure reduction regulating device for heat supply network leakage

Abstract

This invention discloses a pressure-reducing control device for leaking heating pipe networks, comprising two first cylindrical shells, each with an inlet and an outlet. The inlet and outlet ends of the two first cylindrical shells at opposite ends are respectively connected to an input pipe and an output pipe. A water supply pipe is fixedly connected to the inlet and outlet ends of the two first cylindrical shells at opposite ends. A second cylindrical shell is fixedly connected to the top of each of the two first cylindrical shells. A connecting end is fixedly connected to corresponding positions of the two second cylindrical shells. A water passage pipe is fixedly connected to the end of each connecting end away from the second cylindrical shell. When a leak occurs in the water supply pipe, the control device can automatically seal the inlet and outlet ends of the water supply pipe while ensuring that water flows to the outlet pipe through the water passage pipe. This allows for repair of leaking water supply pipes without interrupting heating, station operation, or water release.

Description

Technical Field

[0001] This invention relates to the field of water supply equipment technology, specifically to a pressure reduction and regulation device for leaks in heating pipe networks. Background Technology

[0002] Urban centralized heating systems are a crucial infrastructure for ensuring people's livelihoods during winter in northern regions. The primary heating network is responsible for delivering high-temperature, high-pressure heat transfer fluid (hot water) from heat source plants to various heating stations. During long-term operation, the primary network's water supply pipes endure harsh conditions of high pressure (typically 0.8MPa-2.5MPa) and high temperature (typically 80℃-120℃). This causes the pipe walls to thin due to corrosion and erosion, leading to frequent sudden leaks. These leaks result in significant water and heat loss; statistics show that a single network leak can release hundreds or even thousands of tons of water, especially in direct-supply systems where the volume is even more staggering. Furthermore, the substantial water loss forces the heating system to continuously replenish cold water, increasing fuel consumption to maintain the supply temperature, leading to decreased energy efficiency and rising operating costs.

[0003] A Chinese patent with publication number CN219808437U includes a water supply pipe. The outer wall of the water supply pipe is fixedly connected to a shell. A sealing plate is provided at the bottom of the shell. Bolts are sleeved inside the sealing plate. A water outlet pipe is connected to the outer wall of the shell. A filter screen is fixedly connected inside the water outlet pipe. A vertical pipe is connected to the bottom of the water supply pipe. A water pump is installed at the bottom end of the vertical pipe. A connecting pipe is fixedly connected to the output end of the water pump. A second control valve is installed inside the connecting pipe. A return pipe is fixedly connected to the outer wall of the connecting pipe.

[0004] When the above-mentioned device is in use, if backwashing of the filter screen is required, the first control valve and the valve are closed. Then, the water pump is started to bring the water source in the water supply pipeline into the connecting pipe through the vertical pipe. The water source enters the outlet pipe through the return pipe, and then the water source flows back into the housing through the filter screen. The sealing plate is disassembled by turning the bolt and separating it from the housing. Then, the impurities on the surface of the filter screen are discharged from the housing. The dirt will not move in the pipeline with the water flow, ensuring that the dirt is completely discharged. However, in actual use, when the water supply pipe leaks, the heating station needs to be shut down. After the repair is completed, restarting the equipment requires a lot of time and manpower, which seriously affects the normal heating. Therefore, it is difficult to repair the leaking water supply pipe without shutting down the station.

[0005] Therefore, we propose a pressure reduction and control device for leaks in heating pipe networks. Summary of the Invention

[0006] The purpose of this invention is to provide a pressure reduction and control device for leaking heating pipe networks, which has the advantage of being able to repair leaking water supply pipes without shutting down the plant, thus solving the problems in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pressure-reducing control device for leaks in heating pipe networks, comprising an external controller and two first cylindrical shells. Each of the two first cylindrical shells has an inlet and an outlet fixedly connected to a pipeline at symmetrical positions on both sides. The inlet and outlet ends of the two first cylindrical shells at opposite ends are respectively fixedly connected to an input pipe and an output pipe. A water supply pipe for water source flow is fixedly connected to the inlet and outlet ends of the two first cylindrical shells at opposite ends. A second cylindrical shell is fixedly connected to the top of each of the two first cylindrical shells. A connecting end is fixedly connected to each of the corresponding positions of the two second cylindrical shells, connecting the inner walls of the two first and second cylindrical shells. A water diversion pipe is fixedly connected to the end of each connecting end away from the second cylindrical shell. The second cylindrical shell is equipped with a control device for non-stop maintenance of the leaking water supply pipe.

[0008] Preferably, the top ends of the two second cylindrical shells are both connected to telescopic cylinders, and the output ends of the bottom of the two telescopic cylinders are both connected to semi-circular shells that fit against the inner walls of the second cylindrical shell and the first cylindrical shell, and the semi-circular shells are electrically connected to an external controller.

[0009] Preferably, a third cylindrical shell is fixedly connected to each of the two semi-circular shells, and a piston rod is connected to the inner wall of each of the two third cylindrical shells for vertical movement, and the piston rod is in contact with the inner wall of the third cylindrical shell.

[0010] Preferably, the control device includes two piston rods, each with a reset spring fixedly connected to the top of the piston rod and the opposite surface of the third cylindrical housing to guide the piston rod to reset and move. A pressure sensor for detecting the pressure of the reset spring is fixedly connected to the inner wall of the third cylindrical housing near the output tube end, and the pressure sensor is connected to an external controller via a signal.

[0011] Preferably, the bottom ends of both piston rods are fixedly connected to piston plates that are driven by water pressure to move the piston rods up and down reciprocally. The piston plates are attached to the inner wall of the top of the first cylindrical housing and are connected to move up and down. The inner walls of both water inlets are fixedly connected to partition plates that divide the internal space of the water inlets. The inner walls of both water inlets near the piston plates are fixedly connected to guide blocks that guide the water flow to move the piston plates.

[0012] Preferably, the semi-circular shell is provided with a sealing mechanism for sealing both ends of the water supply pipe. The sealing mechanism includes two airbags that are fixedly connected to the outer contours of the semi-circular shell to seal both ends of the water supply pipe.

[0013] Preferably, each of the two third cylindrical shells has a connecting pipe that is passed through and fixedly connected to the outer contour near the top, so that the piston rod can transport the gas inside the third cylindrical shell to the airbag. The end of each connecting pipe away from the third cylindrical shell is respectively passed through and fixedly connected to the inner wall of the airbag at the adjacent end, and the semi-circular shell is passed through and fixedly connected by the connecting pipe.

[0014] Preferably, a pressure relief valve for releasing high pressure inside the water supply pipe is connected and fixedly connected to the outer contour of the water supply pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When a leak occurs in the water supply pipe, the pressure sensor detects a decrease in water pressure inside the first cylindrical housing near the output pipe. When the pressure falls below a set threshold, the external controller automatically activates the telescopic cylinder, pushing the two semi-circular housings downwards to seal the inlet and outlet ends of the water supply pipe, respectively. At this time, the hot water supplied by the input pipe is directly delivered to the output pipe through the connection end and water pipe on the second cylindrical housing, ensuring that the heating station can maintain a low-pressure operating state. This avoids the risk of pipeline freezing and cracking caused by frequent operations and prolonged lack of circulation due to heating station shutdowns, while also avoiding the one-hour waiting time required for system restart, significantly improving the reliability and continuity of the heating system.

[0016] Second, as the telescopic cylinder pushes the two semi-circular shells downward to seal the inlet and outlet ends of the water supply pipe respectively, the piston plate abuts against the bottom of the first cylindrical shell. At the same time, during the downward movement of the semi-circular shell, the piston rod moves upward relative to the third cylindrical shell, transmitting the internal air pressure of the third cylindrical shell to the air bladder through the connecting pipe. This causes the air bladder to expand and fit tightly against the inner walls of the two ends of the water supply pipe, achieving dual protection of mechanical seal and air pressure seal. This effectively prevents the expansion of leakage points and creates safe conditions for maintenance.

[0017] Third, when the water pressure inside the water supply pipe increases abnormally, the piston plate pushes the piston rod to its limit position under the water pressure. The pressure sensor detects that the pressure of the reset spring exceeds the set threshold, and the external controller can promptly send an alarm to the staff, reminding the operator to open the pressure relief valve to reduce the pressure inside the water supply pipe. This effectively prevents accidents caused by excessive internal pressure leading to water supply pipe rupture and leakage. At the same time, in leakage repair scenarios, it can achieve active pressure reduction regulation to reduce the pressure at the leak point to the safe repair pressure. This reduces the risk of high-temperature and high-pressure operations and avoids water waste caused by releasing water, achieving multiple technical effects of risk reduction, cost saving, and rapid repair.

[0018] The combined use of the above structures solves the problem that, in actual use, when a water supply pipe leaks, the heating station needs to be shut down, and restarting the equipment after repairs takes a lot of time and manpower, seriously affecting normal heating. Therefore, it is difficult to repair leaking water supply pipes without shutting down the station. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the water pipe location in this invention; Figure 5 This is a three-dimensional cross-sectional view of the portion of the second cylindrical shell of the present invention; Figure 6 This is a three-dimensional cross-sectional view of the part where the semi-circular shell of the present invention is located; Figure 7 This is a three-dimensional cross-sectional view of the portion of the third cylindrical shell of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point B.

[0020] In the diagram: 1. First cylindrical housing; 101. Water inlet; 102. Water outlet; 2. Input pipe; 3. Output pipe; 4. Water supply pipe; 5. Second cylindrical housing; 6. Connecting end; 7. Water pipe; 8. Telescopic cylinder; 9. Semi-circular housing; 10. Third cylindrical housing; 11. Piston rod; 12. Piston plate; 13. Divider plate; 14. Guide block; 15. Return spring; 16. Pressure sensor; 17. Airbag; 18. Connecting pipe; 19. Pressure relief valve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1:

[0023] Please see Figures 1 to 8This invention provides a technical solution: a pressure reduction and control device for leaks in heating pipe networks, including an external controller and two first cylindrical shells 1. Each of the two first cylindrical shells 1 has a water inlet 101 and an outlet 102 fixedly connected to a pipeline at symmetrical positions on both sides. The water inlet 101 and outlet 102 at opposite ends of the two first cylindrical shells 1 are respectively fixedly connected to an input pipe 2 and an output pipe 3. A water supply pipe 4 for water source flow is fixedly connected to the water inlet 101 and outlet 102 at opposite ends of the two first cylindrical shells 1. Each of the two first cylindrical shells 1 has a second cylindrical shell 5 fixedly connected to its top. Each of the two second cylindrical shells 5 has a connecting end 6 through which the inner walls of the two first cylindrical shells 1 and the second cylindrical shell 5 are connected. A water diversion pipe 7 for water source diversion is fixedly connected to the end of each connecting end 6 away from the second cylindrical shell 5. The second cylindrical shell 5 is equipped with a control device for non-stop maintenance of the leak location of the water supply pipe 4.

[0024] In use, by setting a first cylindrical shell 1, and the water inlet 101 and water outlet 102 set on the first cylindrical shell 1, the water inlet 101 and water outlet 102 are connected to the inner wall of the first cylindrical shell 1. Through the input pipe 2 and output pipe 3 set on the first cylindrical shell 1, the water inlet 101 of one first cylindrical shell 1 can be fixedly connected to the input pipe 2, and the water outlet 102 of the other first cylindrical shell 1 is fixedly connected to the output pipe 3. Through the water supply pipe 4 set on the first cylindrical shell 1, the water supply pipe 4 can be fixedly connected to the water inlet 101 and water outlet 102 on the adjacent side of the two first cylindrical shells 1, and the water supply pipe 4 can be connected to the inner wall of the two first cylindrical shells 1. With the input pipe 2 transporting water, the water source can be transported through the water supply pipe 4 and the output pipe 3.

[0025] The second cylindrical shell 5 is fixedly supported at the end of the first cylindrical shell 1 by the second cylindrical shell 5 provided on the first cylindrical shell 1. The second cylindrical shell 5 can be connected to the inner wall of the first cylindrical shell 1. The water pipe 7 provided on the second cylindrical shell 5 can connect the inner walls of the two second cylindrical shells 5 through the connecting end 6. The regulating device provided on the second cylindrical shell 5 can seal the inlet end 101 and outlet end 102 of the water supply pipe 4 when the water supply pipe 4 leaks, while ensuring that the water source flows to the output pipe 3 through the water pipe 7.

[0026] Example 2:

[0027] Building upon Example 1, the following is a further step:

[0028] The top ends of the two second cylindrical housings 5 ​​are both penetrated and fixedly connected to telescopic cylinders 8. The output ends of the bottom of the two telescopic cylinders 8 are both fixedly connected to semi-circular housings 9 that fit against the inner walls of the second cylindrical housing 5 and the first cylindrical housing 1. The semi-circular housings 9 are electrically connected to an external controller.

[0029] A third cylindrical shell 10 is fixedly connected to each of the two semi-circular shells 9. A piston rod 11 is connected to the inner wall of each of the two third cylindrical shells 10 in a lifting and moving manner, and the piston rod 11 is in contact with the inner wall of the third cylindrical shell 10.

[0030] In use, the telescopic cylinder 8 is fixedly supported on the second cylindrical housing 5 by means of the telescopic cylinder 8 provided on the second cylindrical housing 5. The telescopic cylinder 8 is connected to an external controller via a semi-circular housing 9 provided on the telescopic cylinder 8. Thus, the external controller can start the telescopic cylinder 8 and drive the semi-circular housing 9 to move up and down reciprocally on the inner walls of the second cylindrical housing 5 and the first cylindrical housing 1. The third cylindrical housing 10 is fixedly supported on the semi-circular housing 9 by means of the third cylindrical housing 10. Thus, the third cylindrical housing 10 can move up and down synchronously with the semi-circular housing 9. The piston rod 11 provided on the third cylindrical housing 10 can move up and down on the inner wall of the third cylindrical housing 10.

[0031] Example 3:

[0032] Building upon Example 2, the following is a further step:

[0033] The control device includes two piston rods 11, each with a reset spring 15 fixedly connected to the top of the piston rod 11 and the opposite surface of the third cylindrical housing 10, which guides the piston rod 11 to move back to its original position. A pressure sensor 16 is fixedly connected to the inner wall of the third cylindrical housing 10 near one end of the output pipe 3 to detect the pressure of the reset spring 15, and the pressure sensor 16 is connected to an external controller via a signal.

[0034] Both piston rods 11 are fixedly connected to a piston plate 12 at their bottom ends, which is driven by water pressure to move the piston rods 11 up and down. The piston plate 12 is attached to the inner wall of the top of the first cylindrical housing 1 and is connected to move up and down. Both water inlet ends 101 are fixedly connected to a partition plate 13 that divides the internal space of the water inlet end 101. Both water inlet ends 101 are fixedly connected to a guide block 14 that guides the water flow to move the piston plate 12.

[0035] In use, the piston plate 12 on the piston rod 11 is fixedly supported on the piston rod 11. The partition plate 13 on the water inlet 101, which is fixedly supported on the inner wall of the water inlet 101, divides the internal space of the water inlet 101. The guide block 14 on the water inlet 101 guides the flow of water due to its inclined surface. Figure 2 and Figure 3 As shown, in the initial state, the semi-circular shell 9 is located on the inner wall of the second cylindrical shell 5, and the piston plate 12 is located above the guide block 14. As water flows into the inner wall of the inlet end 101, the water inside the inlet end 101 flows from the bottom to the guide block 14 under the action of the partition plate 13. Thus, the guide block 14 guides the water to flow to the piston plate 12 under the action of its own inclined surface. Then, under the action of water pressure, the piston plate 12 drives the piston rod 11 to move synchronously in the upward vertical direction.

[0036] The return spring 15 provided on the piston rod 11 can support the position of the piston rod 11. As the piston plate 12 moves vertically upward under the action of water pressure, the piston rod 11 can move synchronously towards the top of the third cylindrical housing 10. At the same time, the return spring 15 is squeezed and contracted under the action of the piston rod 11. The pressure sensor 16 provided on the third cylindrical housing 10 allows the return spring 15 to apply pressure to the pressure sensor 16. The pressure sensor 16 is connected to the external controller via a signal, so the pressure sensor 16 can convert the detected pressure data into an electrical signal and remotely transmit it to the external controller.

[0037] In actual use, when the water supply pipe 4 leaks, and the water pressure inside the first cylindrical housing 1 near the end of the output pipe 3 decreases, the return spring 15, under its own elastic force, can push the piston rod 11 and the piston plate 12 to move downwards in a vertical direction to reset. At the same time, the pressure sensor 16 detects that the pressure decreases accordingly. When the pressure sensor 16 detects that the pressure is lower than the set threshold, the external controller can issue an alarm to the staff and activate the two telescopic cylinders 8. Thus, the output shaft of the telescopic cylinder 8 can push the pressure relief valve 19 and drive the piston plate 12 to move towards the bottom end of the first cylindrical housing 1. The two semi-circular housings 9 respectively fit against the inner wall of the first cylindrical housing 1 near the end of the water supply pipe 4. Then, the telescopic cylinder 8 can push the two semi-circular shells 9 to seal the inlet end 101 and outlet end 102 of the water supply pipe 4 respectively. At this time, the input pipe 2 can transport the water source to the output pipe 3 through the connection end 6 and the water pipe 7 on the second cylindrical shell 5, ensuring that the heating station can maintain a low-pressure operation state and the water supply pipe 4 is in a sealed state. In this way, the staff can repair the leak in the water supply pipe 4, realizing the repair of the leaking water supply pipe 4 without stopping the station. This avoids the risk of pipeline freezing and cracking caused by frequent operation and long-term non-circulation due to the shutdown of the heating station. At the same time, it avoids the 2-3 hour waiting time required for system restart, greatly improving the reliability and continuity of the heating system.

[0038] Example 4:

[0039] Building upon Example 3, the following is a further step:

[0040] The semi-circular shell 9 is provided with a sealing mechanism to seal both ends of the water supply pipe 4. The sealing mechanism includes two airbags 17 that are fixedly connected to the outer contour of the semi-circular shell 9 to seal both ends of the water supply pipe 4.

[0041] Both of the third cylindrical shells 10 have a connecting pipe 18 that is passed through and fixedly connected to the outer contour near the top of each of the two third cylindrical shells 10, so that the piston rod 11 can transport the gas inside the third cylindrical shell 10 to the airbag 17. The end of each connecting pipe 18 away from the third cylindrical shell 10 is respectively passed through and fixedly connected to the inner wall of the airbag 17 at the adjacent end, and the semi-circular shell 9 is passed through and fixedly connected by the connecting pipe 18.

[0042] In use, the airbag 17 on the semi-circular housing 9 is fixedly supported on the outer contour of the pressure relief valve 19. The connecting pipe 18 on the third cylindrical housing 10 connects the airbag 17 to the inner wall of the third cylindrical housing 10. As the telescopic cylinder 8 pushes the piston plate 12 down to the extreme position at the bottom of the first cylindrical housing 1, and the telescopic cylinder 8 pushes the semi-circular housing 9 down to block the water supply pipe 4 port, the semi-circular housing 9 can synchronously... The piston rod 11 moves downwards, and under the pressure of the piston plate 12, it moves towards the top of the third cylindrical housing 10. The internal air pressure at the top of the third cylindrical housing 10 is then positive, allowing the piston rod 11 to deliver the internal air pressure of the third cylindrical housing 10 to the airbag 17 through the connecting pipe 18. At the same time, the airbag 17 expands to seal the inner walls of both ends of the water supply pipe 4, ensuring the water supply pipe 4 is airtight and effectively preventing the expansion of the leak point, thus creating safe conditions for maintenance.

[0043] Example 5:

[0044] Building upon Example 4, the following is a further step:

[0045] The water supply pipe 4 is connected to a pressure relief valve 19 through its outer contour and fixedly connected to release the high pressure inside the water supply pipe 4.

[0046] During use, the pressure relief valve 19 installed on the water supply pipe 4 is connected to the inner wall of the water supply pipe 4. When the water pressure inside the water supply pipe 4 increases, the piston plate 12 pushes the piston rod 11 to the limit position under the action of water pressure. At this time, the pressure sensor 16 detects that the pressure of the reset spring 15 exceeds the set threshold, so the external controller can issue an alarm to the surrounding staff, reminding them to open the pressure relief valve 19 to reduce the pressure inside the water supply pipe 4, further reducing the problem of water supply pipe 4 rupturing and leaking due to excessive internal pressure. At the same time, in the case of leakage repair, it can realize active pressure reduction regulation to reduce the pressure at the leakage point to the safe repair pressure, which not only reduces the risk of high temperature and high pressure operation, but also avoids the waste of water resources caused by water release, achieving multiple technical effects of "reducing risk, saving cost, and fast repair".

[0047] Furthermore, the existing device can be used to repair leaking water supply pipes without stopping the station during actual use, making it convenient to use and superior to traditional products.

[0048] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure-reducing control device for leaks in heating pipe networks, comprising an external controller, characterized in that: It also includes two first cylindrical shells (1), each of which is fixedly connected to an inlet end (101) and an outlet end (102) connected to a pipe at symmetrical positions on both sides. The inlet end (101) and outlet end (102) of the two first cylindrical shells (1) at opposite ends are respectively fixedly connected to an input pipe (2) and an output pipe (3). The inlet end (101) and outlet end (102) of the two first cylindrical shells (1) at opposite ends are respectively fixedly connected to a water supply pipe (4) for water source flow. The top of each of the first cylindrical shells (1) is fixedly connected to a second cylindrical shell (5). The corresponding positions of the two second cylindrical shells (5) are connected by a connecting end (6) that connects the inner walls of the two first cylindrical shells (1) and the second cylindrical shells (5). The ends of the two connecting ends (6) away from the second cylindrical shells (5) are fixedly connected to a water pipe (7) for diverting the water source. The second cylindrical shell (5) is provided with a control device for non-stop maintenance of the leaking position of the water supply pipe (4).

2. The pressure reduction and control device for leakage in heating pipe networks according to claim 1, characterized in that: The top ends of the two second cylindrical shells (5) are both connected to telescopic cylinders (8), and the output ends of the two telescopic cylinders (8) are both connected to semi-circular shells (9) that fit against the inner walls of the second cylindrical shell (5) and the first cylindrical shell (1), and the semi-circular shells (9) are electrically connected to the external controller.

3. A pressure-reducing and regulating device for leaking heating pipe networks according to claim 2, characterized in that: A third cylindrical shell (10) is fixedly connected to each of the two semi-circular shells (9). A piston rod (11) is connected to the inner wall of each of the two third cylindrical shells (10) in a lifting and moving manner, and the piston rod (11) is in contact with the inner wall of the third cylindrical shell (10).

4. A pressure-reducing and regulating device for leaking heating pipe networks according to claim 3, characterized in that: The control device includes two piston rods (11) with their top ends and the opposite surfaces of the third cylindrical housing (10) fixedly connected with reset springs (15) to guide the piston rods (11) to reset and move. A pressure sensor (16) to detect the pressure of the reset springs (15) is fixedly connected to the inner wall of the third cylindrical housing (10) near the output tube (3), and the pressure sensor (16) is connected to an external controller via a signal.

5. A pressure-reducing and regulating device for leaking heating pipe networks according to claim 4, characterized in that: Both piston rods (11) are fixedly connected to a piston plate (12) that is pushed by water pressure to move the piston rods (11) up and down. The piston plate (12) is attached to the inner wall of the top of the first cylindrical shell (1) and is connected to move up and down. Both water inlet ends (101) are fixedly connected to a partition plate (13) that divides the internal space of the water inlet end (101). Both water inlet ends (101) are fixedly connected to a guide block (14) that guides the water flow to push the piston plate (12) to move.

6. A pressure-reducing and regulating device for leaks in heating pipe networks according to claim 3, characterized in that: The semi-circular shell (9) is provided with a sealing mechanism to seal both ends of the water supply pipe (4). The sealing mechanism includes two airbags (17) that are fixedly connected to the outer contour of the semi-circular shell (9) to seal both ends of the water supply pipe (4).

7. A pressure-reducing and regulating device for leaking heating pipe networks according to claim 6, characterized in that: Both of the third cylindrical shells (10) have a connecting pipe (18) that is fixedly connected to the outer contour near the top of each of the two third cylindrical shells (10) so that the piston rod (11) can transport the gas inside the third cylindrical shell (10) to the airbag (17). The end of each connecting pipe (18) away from the third cylindrical shell (10) is connected to the inner wall of the airbag (17) at the adjacent end and fixedly connected. The semi-circular shell (9) is connected to the connecting pipe (18) through it and fixedly connected.

8. A pressure-reducing and regulating device for leaking heating pipe networks according to claim 7, characterized in that: The water supply pipe (4) is connected to a pressure relief valve (19) that discharges the high pressure inside the water supply pipe (4) through its outer contour.

Images