Pressure relief valve with leakage detection function

Abstract

The invention relates to the field of pressure release valves, and discloses a pressure release valve with a leakage detection function, the pressure release valve comprises a pressure release valve body and a combined pipe, the two ends of the pressure release valve body are provided with a guide pipe and a connecting pipe respectively, the outer side of the connecting pipe is fixedly connected with a detection pipe, and a leakage detection mechanism is arranged in the detection pipe; the leakage detection mechanism comprises an auxiliary assembly and an alarm, the alarm is installed on the outer side of the detection pipe, a connecting rope is arranged at a switch of the alarm, a floating ball is fixedly connected to one end of the connecting rope, and a fixing ring is fixedly connected to the inner side of the detection pipe. A detection mechanism composed of a floating ball and an alarm is arranged in a detection pipe, when the pressure release valve leaks, leaked water flows into the detection pipe, the floating ball moves upwards due to buoyancy along with rising of the water level, an alarm switch is pulled through a connecting rope, the leakage condition can be detected timely and accurately through the design, frequent manual inspection is not needed, and the detection efficiency is improved. And the timeliness of leakage discovery is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure relief valves, in particular to a pressure relief valve with a leakage detection function. Background Art

[0002] In industrial production, building water supply and drainage, and various fluid delivery systems, pressure relief valves are key equipment to ensure the safe operation of the system. Its main function is to automatically open the pressure relief valve when the system pressure exceeds the set value to prevent serious consequences such as pipeline rupture and equipment damage caused by excessive pressure. It is widely used in many fields such as petrochemicals, electricity, and metallurgy, and plays an indispensable role in maintaining the continuity and stability of production.

[0003] The pressure relief valves in the prior art are commonly spring-type and pilot-operated. The spring-type pressure relief valve mainly relies on the elastic force of the spring to maintain the closed state of the valve. When the system pressure is greater than the spring preload, the valve disc is lifted to achieve pressure relief. The pilot-operated pressure relief valve controls the opening and closing of the main valve through the pilot valve, and uses the difference between the system pressure and the pilot valve set pressure to drive the main valve to operate. This structure can achieve pressure relief with a large flow rate.

[0004] However, in actual application scenarios, such as in the water supply system of a high-rise building, when a valve leaks, it is difficult to detect it in time, resulting in water waste, and even equipment damage and safety hazards. This is because traditional valves rely only on manual regular inspections, and manual inspections have problems such as long time intervals and easy omissions. Therefore, the present invention provides a pressure relief valve with a leak detection function to solve the deficiencies in the prior art. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a pressure relief valve with a leakage detection function, which solves the problem that when a leakage occurs in the pressure relief valve in the prior art, it is difficult to detect it in time by manual inspection.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pressure relief valve with a leakage detection function, comprising a pressure relief valve body and a combination pipe, wherein the two ends of the pressure relief valve body are respectively provided with a conduit and a connecting pipe, the outer side of the connecting pipe is fixedly connected with a detection tube, the interior of the detection tube is provided with a leakage detection mechanism, the leakage detection mechanism includes an auxiliary component and an alarm, the alarm is installed on the outer side of the detection tube, a connecting rope is provided at the switch of the alarm, one end of the connecting rope is fixedly connected with a float, the inner side of the detection tube is fixedly connected with a fixing ring, and the outer side of the float is in contact with the outer side of the fixing ring.

[0007] Preferably, the auxiliary component includes a solenoid valve, which is installed inside the detection tube and located below the fixed ring. A water pressure sensor is installed on the inner side of the conduit. A wire 1 is fixedly connected to the outer side of the water pressure sensor, and one end of the wire 1 is fixedly connected to the outer side of the solenoid valve.

[0008] Preferably, a plugging cylinder is fixedly connected to the top of the combined pipe, a plugging assembly is arranged inside the plugging cylinder, and the plugging assembly includes a hydraulic rod, and the hydraulic rod is installed on the top of the plugging cylinder.

[0009] Preferably, the output end of the hydraulic rod is fixedly connected with a piston, the outer side of the piston is in contact with the inner wall of the blocking cylinder, and the outer side of the blocking cylinder is fixedly connected with a drain pipe.

[0010] Preferably, a second electric wire is fixedly connected to the outer side of the hydraulic rod, and one end of the second electric wire is fixedly connected to the outer side of the alarm.

[0011] Preferably, a combination mechanism is provided on the outer side of the combination pipe, the combination mechanism comprises a sliding ring and a pipe clamp, the sliding ring is sleeved on the outer side of the combination pipe and is slidably connected to the outer wall of the combination pipe, and an annular groove is opened on the outer side of the combination pipe.

[0012] Preferably, a sealing ring 1 is provided on the inner side of the annular groove, a combined groove is opened on the inner side of one end of the connecting pipe, the outer side of the sealing ring 1 fits with the inner side of the combined groove, and the outer side of the sealing ring 1 fits with the inner side of the sliding ring.

[0013] Preferably, the outer side of the sliding ring contacts the outer side of the connecting pipe, the outer sleeves of the combined pipe and the connecting pipe are provided with a sealing ring 2, the inner side of the sealing ring 2 is simultaneously fitted with the outer sides of the combined pipe and the connecting pipe, and the pipe clamp is arranged outside the sealing ring 2.

[0014] The present invention provides a pressure relief valve with a leakage detection function. It has the following beneficial effects: 1. The present invention equips the valve with a special detection tube, which has a built-in detection mechanism consisting of a float and an alarm. When the pressure relief valve leaks, the leaked water will flow into the detection tube. As the water level rises, the float moves upward due to buoyancy, and the alarm switch is pulled by the connecting rope. This design can detect leakage in a timely and accurate manner without the need for frequent manual inspections, greatly improving the timeliness of leakage detection, avoiding water resource waste and equipment damage due to failure to detect leakage in time, and effectively ensuring the normal operation of the system.

[0015] 2. The present invention detects leakage and sounds an alarm through an alarm. The alarm signal will be quickly transmitted to the hydraulic rod through wire 2. After receiving the signal, the hydraulic rod will immediately start and push the piston downward. The piston fits tightly against the inner wall of the sealing cylinder to quickly block the leakage channel. This linkage mechanism enables a blocking response to be made in a very short time when a leakage occurs, effectively preventing continuous leakage of water, reducing losses caused by leakage, and providing strong protection for the safety and stability of the system.

[0016] 3. The present invention can be selectively installed according to actual conditions through the additional structure of the combined pipe. During installation, double sealing can be achieved by installing sealing ring 1 and sealing ring 2 to ensure reliable connection. When the system does not need this part of the structure, it can be easily disassembled. This flexible disassembly and assembly design can not only meet the use requirements in different scenarios, but also ensure the sealing and stability of the system when needed, thereby improving the applicability and practicality of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the structure of the detection tube of the present invention; Figure 3 It is a schematic diagram of the fixing ring structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the detection tube of the present invention; Figure 5 It is a schematic diagram of the structure of the combined pipe of the present invention; Figure 6 It is a schematic diagram of the internal structure of the plugging cylinder of the present invention.

[0018] Among them, 1. Pressure relief valve body; 2. Conduit; 3. Water pressure sensor; 4. Wire 1; 5. Connecting pipe; 6. Detection tube; 7. Solenoid valve; 8. Alarm; 9. Fixed ring; 10. Float; 11. Connecting rope; 12. Wire 2; 13. Combined pipe; 14. Sealing cylinder; 15. Hydraulic rod; 16. Piston; 17. Drain pipe; 18. Combined groove; 19. Annular groove; 20. Sealing ring 1; 21. Sliding ring; 22. Sealing ring 2; 23. Pipe clamp. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please refer to the attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides a pressure relief valve with a leakage detection function, including a pressure relief valve body 1 and a combination pipe 13. The pressure relief valve body 1 is a core component, and a conduit 2 and a connecting pipe 5 are respectively provided at both ends thereof, which are responsible for the inflow and outflow of water in the system and pressure regulation. A detection pipe 6 is fixedly connected to the outside of the connecting pipe 5, and the detection pipe 6 is specifically used to monitor whether there is leakage in the pressure relief valve body 1. A leakage detection mechanism is arranged inside the detection pipe 6, which is composed of an auxiliary component and an alarm 8. The alarm 8 is installed on the outside of the detection pipe 6. Once an abnormality is detected, it will sound an alarm to remind the staff to deal with it in time. A connecting rope 11 is arranged at the switch of the alarm 8, and one end of the connecting rope 11 is fixedly connected to a floating ball 10. A fixing ring 9 is fixedly connected to the inside of the detection pipe 6. The outside of the floating ball 10 contacts the outside of the fixing ring 9. The fixing ring 9 plays a role in limiting the position of the floating ball 10, so that it remains stable under normal circumstances. The auxiliary component includes a solenoid valve 7, which is installed inside the detection pipe 6 and is located below the fixing ring 9, and controls the on and off of the water flow according to the received signal. A water pressure sensor 3 is installed on the inner side of the conduit 2, which can monitor the water pressure changes in the conduit 2 in real time. An electric wire 4 is fixedly connected to the outer side of the conduit 2, and one end of the electric wire 4 is fixedly connected to the outer side of the solenoid valve 7.

[0021] A sealing cylinder 14 is fixedly connected to the top of the combined pipe 13. The sealing assembly arranged inside the sealing cylinder 14 is a key structure to prevent the leakage from expanding. The sealing assembly includes a hydraulic rod 15. The hydraulic rod 15 is installed on the top of the sealing cylinder 14. As a power source, it can drive the piston 16 to move according to the received signal. The output end of the hydraulic rod 15 is fixedly connected to the piston 16. The outer side of the piston 16 fits with the inner wall of the sealing cylinder 14 to ensure that the channel can be effectively blocked during operation. A drain pipe 17 is fixedly connected to the outer side of the sealing cylinder 14 for discharging water after pressure relief. An electric wire 12 is fixedly connected to the outer side of the hydraulic rod 15. One end of the electric wire 12 is fixedly connected to the outer side of the alarm 8. When the alarm 8 triggers the alarm, the signal can be transmitted to the hydraulic rod 15 in time through the electric wire 12 to start the sealing action.

[0022] The outer side of the combined pipe 13 is provided with a combined mechanism, which includes a sliding ring 21 and a pipe hoop 23. The sliding ring 21 is sleeved on the outer side of the combined pipe 13 and is slidably connected to the outer wall of the combined pipe 13, which is convenient for adjustment during installation and removal. The outer side of the combined pipe 13 is provided with an annular groove 19, and the inner side of the annular groove 19 is provided with a sealing ring 20. The inner side of one end of the connecting pipe 5 is provided with a combined groove 18, and the outer side of the sealing ring 20 is in contact with the inner side of the combined groove 18. At the same time, the outer side of the sealing ring 20 is in contact with the sliding ring 21. The inner side of the sliding ring 21 fits with the outer side of the connecting pipe 5, and the outer side of the sliding ring 21 contacts with the outer side of the connecting pipe 5. Through these tight fits, the sealing of the connection is guaranteed. The outer sleeve of the combined pipe 13 and the connecting pipe 5 is provided with a sealing ring 22, which plays a double sealing role and further enhances the reliability of the connection. The inner side of the sealing ring 22 fits with the outer sides of the combined pipe 13 and the connecting pipe 5 at the same time. The pipe hoop 23 is arranged on the outside of the sealing ring 22, which reinforces the entire sealing structure and ensures stable operation under high pressure environment.

[0023] Specifically, when the system is operating normally, the water flow in the conduit 2 is stable and the water pressure is within a normal range. At this time, the valve plate inside the pressure relief valve body 1 is in a closed state, tightly fitting the valve seat to prevent water leakage and ensure the sealing of the system. At the same time, the water pressure sensor 3 monitors the water pressure inside the conduit 2 in real time. Since its set parameters are the same as those of the pressure relief valve body 1, it can accurately sense the changes in water pressure. When the water pressure inside the conduit 2 is too high and exceeds the set value of the pressure relief valve body 1, the force generated by the water pressure will overcome the resistance of the spring and other structures inside the pressure relief valve body 1, causing the valve plate to open. At this time, the high-pressure water flow is depressurized through the channel formed by the opening of the valve plate, avoiding dangerous situations such as rupture of the conduit 2 due to excessive pressure, thereby ensuring the safe and stable operation of the entire water system. When the pressure relief valve body 1 starts to relieve pressure, the water pressure sensor 3 detects that the water pressure inside the conduit 2 is too high. It will convert this pressure change into an electrical signal and transmit it to the solenoid valve 7 through the wire 4. Due to the good conductivity of the wire 4, the electrical signal can be transmitted quickly and accurately. The solenoid valve 7 that receives the signal is in an open state, opening up a new channel for the pressure-relieved water. In this way, in addition to flowing out from the normal pressure relief path of the pressure relief valve body 1, the pressure-relieved water will also pass through the solenoid valve 7 and be discharged through the pipeline flowing through the combination pipe 13 to the drain pipe 17. The multi-pipeline discharge method can speed up the pressure relief speed, more efficiently reduce the water pressure in the conduit 2, and reduce the impact time of high pressure on the system. As the pressure relief process continues, the internal pressure of the conduit 2 gradually drops to the set safety value. At this time, the valve plate inside the pressure relief valve body 1 is closed under the action of the reset structure such as the spring, and the sealing barrier to the water flow is restored. At the same time, after the water pressure sensor 3 detects that the water pressure inside the conduit 2 has dropped to the set safety value, it will send an electrical signal again. The signal is transmitted to the solenoid valve 7 through the wire 4, so that the solenoid valve 7 is closed within 5 to 10 seconds. This short delayed closing time is set to ensure that the pressure in the conduit 2 is stable at a safe value to avoid frequent opening and closing of the solenoid valve 7 due to pressure fluctuations. After the solenoid valve 7 is closed, the additional drainage channel is cut off, so that the system water flow returns to a normal flow state. When water leakage occurs in the pressure relief valve body 1, the leaked water will gradually accumulate inside the detection tube 6. As the liquid level inside the detection tube 6 rises, the float 10 will move upward due to buoyancy. The float 10 is connected to the switch of the alarm 8 through a connecting rope 11. When the float 10 rises to a certain position, it will be pulled to the switch of the alarm 8 through the connecting rope 11, triggering the alarm 8 to alarm. The alarm sound emitted by the alarm 8 can promptly remind the staff to quickly know that there is a leakage problem in the pressure relief valve body 1, so that timely measures can be taken to carry out maintenance and treatment, avoid further expansion of the leakage problem, and reduce the waste of water resources and potential equipment damage risks caused by leakage. At the same time as the alarm 8 sounds, the alarm signal will transmit the electrical signal to the hydraulic rod 15 through the wire 2 12. The wire 2 12 serves as a medium for signal transmission, ensuring the effective transmission of the signal.After receiving the signal, the hydraulic rod 15 starts, and its output end pushes the piston 16 downward. The outer side of the piston 16 is tightly fitted with the inner wall of the plugging tube 14. When it moves down to the right position, it can block the channel and prevent the leaked water from continuing to flow. In this way, while the alarm prompts the staff, remedial measures are taken to effectively avoid continuous water leakage and minimize the loss caused by leakage. In addition, the combined pipe 13 can be selectively installed according to the actual situation. During installation, the outer part of the combined pipe 13 is firstly sleeved with a sealing ring 20. The sealing ring 20 has good elasticity and sealing performance, and can fill the gap between the combined pipe 13 and the connecting pipe 5, and initially plays a sealing role. Then, the sealing ring 22 is sleeved. The sealing ring 22 further enhances the sealing effect, making the connection between the combined pipe 13 and the connecting pipe 5 more reliable. This double sealing structure effectively prevents water leakage at the connection, ensures the feasibility of the entire blocking structure, and ensures that when it is necessary to relieve pressure and drain water through the combined pipe 13 and the drain pipe 17, the water flow will not leak from the connection, ensuring the normal operation of the system.

[0024] Working principle: First, when the water pressure inside the conduit 2 is too high and exceeds the set value of the pressure relief valve body 1, the valve plate inside the pressure relief valve body 1 will open to relieve pressure. At the same time, the parameters set for the water pressure sensor 3 are the same as those of the pressure relief valve body 1. When the water pressure sensor 3 detects that the water pressure inside the conduit 2 is too high, it will transmit an electrical signal to the solenoid valve 7 through the wire 14, so that the solenoid valve 7 is in an open state, and the depressurized water will pass through the solenoid valve 7 and the two pipelines flowing through the combination pipe 13 to the drain pipe 17 for discharge. When the pressure inside the conduit 2 drops to the set safety value, the valve plate inside the pressure relief valve body 1 will close. When the water pressure sensor 3 detects that the water pressure inside the conduit 2 drops to the set safety value, it will send an electrical signal to close the solenoid valve 7 within 5 to 10 seconds. At this time, when the pressure relief valve body 1 When water leakage occurs, water will gradually accumulate inside the detection tube 6, and as the water level inside the detection tube 6 rises, the float 10 will move upward, and finally the float 10 will be pulled to the switch of the alarm 8 through the connecting rope 11, triggering the alarm 8 to alarm, and at the same time, the electric signal will be transmitted to the hydraulic rod 15 through the wire 2 12, so that the hydraulic rod 15 starts to move the piston 16 downward to block the channel, so that remedial measures can be taken while the alarm prompts the staff to avoid continuous water leakage. In addition, the combined pipe 13 can be selectively installed according to actual conditions. After the sealing ring 1 20 is sleeved on the outside of the combined pipe 13, the sealing ring 2 22 can achieve a double sealing effect, making the connection between the combined pipe 13 and the connecting pipe 5 more reliable, ensuring the feasibility of the blocking structure.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief valve with a leakage detection function, comprising a pressure relief valve body (1) and a combination pipe (13), characterized in that: The two ends of the pressure relief valve body (1) are respectively provided with a guide tube (2) and a connecting tube (5); the outer side of the connecting tube (5) is fixedly connected to a detection tube (6); the interior of the detection tube (6) is provided with a leakage detection mechanism; the leakage detection mechanism comprises an auxiliary component and an alarm (8); the alarm (8) is installed on the outer side of the detection tube (6); a connecting rope (11) is provided at the switch of the alarm (8); one end of the connecting rope (11) is fixedly connected to a floating ball (10); the inner side of the detection tube (6) is fixedly connected to a fixing ring (9); the outer side of the floating ball (10) is in contact with the outer side of the fixing ring (9).

2. The pressure relief valve with leakage detection function according to claim 1, characterized in that: The auxiliary component comprises a solenoid valve (7), the solenoid valve (7) being installed inside the detection tube (6) and located below the fixing ring (9), a water pressure sensor (3) being installed inside the conduit (2), an electric wire (4) being fixedly connected to the outside of the water pressure sensor (3), and one end of the electric wire (4) being fixedly connected to the outside of the solenoid valve (7).

3. The pressure relief valve with leakage detection function according to claim 1, characterized in that: A plugging cylinder (14) is fixedly connected to the top of the combined pipe (13); a plugging assembly is arranged inside the plugging cylinder (14); the plugging assembly comprises a hydraulic rod (15); and the hydraulic rod (15) is mounted on the top of the plugging cylinder (14).

4. The pressure relief valve with leakage detection function according to claim 3, characterized in that: The output end of the hydraulic rod (15) is fixedly connected to a piston (16), the outer side of the piston (16) is in contact with the inner wall of the plugging cylinder (14), and the outer side of the plugging cylinder (14) is fixedly connected to a drainage pipe (17).

5. The pressure relief valve with leakage detection function according to claim 4, characterized in that: The outer side of the hydraulic rod (15) is fixedly connected to a second electric wire (12), and one end of the second electric wire (12) is fixedly connected to the outer side of the alarm (8).

6. The pressure relief valve with leakage detection function according to claim 1, characterized in that: A combination mechanism is provided on the outside of the combination pipe (13), the combination mechanism comprising a sliding ring (21) and a pipe clamp (23); the sliding ring (21) is sleeved on the outside of the combination pipe (13) and is slidably connected to the outer wall of the combination pipe (13); and an annular groove (19) is provided on the outside of the combination pipe (13).

7. The pressure relief valve with leakage detection function according to claim 6, characterized in that: A sealing ring 1 (20) is provided on the inner side of the annular groove (19), a combination groove (18) is provided on the inner side of one end of the connecting pipe (5), the outer side of the sealing ring 1 (20) is in contact with the inner side of the combination groove (18), and the outer side of the sealing ring 1 (20) is in contact with the inner side of the sliding ring (21).

8. The pressure relief valve with leakage detection function according to claim 7, characterized in that: The outer side of the sliding ring (21) contacts the outer side of the connecting pipe (5); the outer sides of the combined pipe (13) and the connecting pipe (5) are covered with a second sealing ring (22); the inner side of the second sealing ring (22) is in contact with the outer sides of the combined pipe (13) and the connecting pipe (5); and the pipe hoop (23) is arranged outside the second sealing ring (22).

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