Safety ventilation pipeline overflow valve with self-detection function

Abstract

The utility model provides a safety ventilation pipeline overflow valve with a self-detection function, which relates to the technical field of overflow valves and comprises a shell, a valve core slidably connected in the shell, a connecting block in threaded connection with the top of the shell, a threaded hole formed in the position, close to the bottom, of the outer part of the shell, and a barometer and a leakage alarm assembly in threaded connection with the interior of the threaded hole. The leakage alarm assembly is arranged outside the shell and used for detecting gas leakage, and the leakage alarm assembly comprises a sealing cover, a mounting cylinder, a piston plate, an audible and visual alarm and a pressure sensor. According to the overflow valve, the overflow valve can be detected through the leakage alarm assembly, so that an alarm can be given at the first time of leakage, a worker can maintain the overflow valve in time, the discovery time is greatly shortened, the gas leakage amount is reduced, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow valves, in particular to a safety ventilation pipeline overflow valve with a self-detection function. Background Art

[0002] Relief valves are widely used in gas line equipment. They mainly limit the pressure of the gas pressure system within the set pressure to prevent the gas pressure system pressure from being too high and damaging the gas pressure components and seals. Relief valves are divided into direct-acting and pilot-operated types. Traditional relief valves have a conical seal between the main valve core sleeve and the main valve core. During long-term use, the conical seal is constantly worn and leaks occur. However, in actual use, it is unknown whether the existing relief valve has a leak, so when the relief valve leaks, it cannot be controlled in time, causing the relief valve to leak a large amount of gas, causing a safety accident, and causing a lot of waste, which is not conducive to actual use. Utility Model Content

[0003] The utility model aims to solve the shortcomings existing in the background technology and provides a safety ventilation pipeline overflow valve with a self-detection function. The overflow valve can be detected by a leakage alarm component, so that an alarm can be issued at the first time of leakage, and the staff can repair it in time, which greatly reduces the discovery time, reduces the gas leakage and improves the safety performance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety ventilation pipeline overflow valve with a self-detection function, comprising: a shell, a valve core is slidably connected to the inside of the shell, a connecting block is threadedly connected to the top of the shell, a threaded hole is opened on the outside of the shell near the bottom, a pressure gauge is threadedly connected to the inside of the threaded hole, and a leakage alarm component is arranged on the outside of the shell for detecting gas leakage, and the leakage alarm component comprises: a sealing cover, a mounting cylinder, a piston plate, an audible and visual alarm, and a pressure sensor.

[0005] Furthermore, a sealing cover is provided on the outside of the connecting block, a mounting tube is fixedly connected to the outside of the sealing cover, a piston plate is slidably connected to the inside of the mounting tube, an audible and visual alarm is fixedly installed on one end of the mounting tube away from the sealing cover, and a pressure sensor is fixedly installed on one end of the audible and visual alarm close to the piston plate.

[0006] Furthermore, a mounting frame is detachably connected to the top of the sealing cover, a box is fixedly connected to the mounting frame, a cavity is opened inside the box, a turbine is arranged inside the cavity, a worm is engaged with one side of the turbine, a servo motor is fixedly connected to one side of the box, and a drive shaft of the servo motor is connected to the turbine.

[0007] Furthermore, a connecting ring is fixedly connected to the outside of the shell, a positioning block is fixedly connected to the top of the connecting block, sealing rings are respectively provided on the positioning block and the connecting ring, the sealing cover is threadedly connected to the connecting ring, and a positioning hole is opened on the top for use with the positioning block.

[0008] Furthermore, a vent hole is provided on one side of the connecting block, and the interior of the connecting block is connected to the interior of the sealing cover through the vent hole. An air hole connected to the interior of the mounting tube is provided on the inner wall of the sealing cover. A spring b is provided on the outside of the pressure sensor, and the spring b is connected to one side of the piston plate.

[0009] Furthermore, an adjusting rod is provided inside the connecting block, a sleeve is fixedly connected to the bottom end of the adjusting rod, and a spring a is provided between the sleeve and the valve core.

[0010] Furthermore, the outside of the adjusting rod is provided with a thread, and the adjusting rod is threadedly connected to the inside of the turbine, the shell is provided with a through hole for accommodating the movement of the adjusting rod, and limiting blocks are respectively fixedly connected to the two through holes, and the adjusting rod is provided with two symmetrically arranged limiting grooves, and the two limiting blocks are respectively slidably connected to the two limiting grooves.

[0011] The utility model provides a safety ventilation pipeline overflow valve with a self-detection function, which has the following beneficial effects:

[0012] The utility model has the advantage that the overflow valve can be detected through the leakage alarm component, so that an alarm can be issued at the first time of leakage, and the staff can repair it in time, which greatly reduces the discovery time, reduces the gas leakage and improves the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a sectional view of the overall structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the connecting ring structure of the utility model.

[0016] Figure 4 It is a schematic diagram of the structure of the adjusting rod of the utility model.

[0017] Figure 5 For the utility model Figure 2 Enlarged view of point A in the middle.

[0018] Figure 6 For the utility model Figure 3 Enlarged view of point B in the middle.

[0019] Figure 1-6 In: 1. Shell; 11. Valve core; 12. Connecting block; 13. Pressure gauge; 14. Adjusting rod; 15. Sleeve; 16. Spring a; 2. Sealing cover; 21. Mounting cylinder; 22. Piston plate; 23. Sound and light alarm; 24. Pressure sensor; 25. Connecting ring; 26. Positioning block; 27. Sealing ring; 28. Air vent; 29. ​​Air hole; 210. Spring b; 3. Mounting frame; 31. Box; 32. Turbine; 33. Worm; 34. Servo motor; 35. Limit block; 36. Limit groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0021] An embodiment of the present application provides a safety ventilation line overflow valve with a self-detection function. The safety ventilation line overflow valve with a self-detection function can detect the overflow valve through a leakage alarm component, thereby being able to issue an alarm at the first moment of leakage, so that the staff can repair it in time, which greatly reduces the discovery time, reduces the amount of gas leakage, and improves safety performance.

[0022] The safety ventilation pipeline overflow valve with self-detection function is described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0023] The present application is described in detail below in conjunction with the accompanying drawings and specific implementation methods. Figure 1-6 In this embodiment, a safety ventilation pipeline overflow valve with a self-detection function is provided, including: a shell 1, a valve core 11 is slidably connected inside the shell 1, a connecting block 12 is threadedly connected to the top of the shell 1, a threaded hole is opened on the outside of the shell 1 near the bottom, a pressure gauge 13 is threadedly connected inside the threaded hole, and a leakage alarm component is arranged on the outside of the shell 1 for detecting gas leakage. The leakage alarm component includes: a sealing cover 2, a mounting cylinder 21, a piston plate 22, an audible and visual alarm 23, and a pressure sensor 24.

[0024] In some embodiments, a sealing cover 2 is sleeved on the outside of the connecting block 12, a mounting tube 21 is fixedly connected to the outside of the sealing cover 2, a piston plate 22 is slidably connected to the inside of the mounting tube 21, an audible and visual alarm 23 is fixedly installed on the end of the mounting tube 21 away from the sealing cover 2, and a pressure sensor 24 is fixedly installed on the end of the audible and visual alarm 23 close to the piston plate 22, a connecting ring 25 is fixedly connected to the outside of the shell 1, a positioning block 26 is fixedly connected to the top of the connecting block 12, and sealing rings 27 are respectively sleeved on the positioning block 26 and the connecting ring 25, the sealing cover 2 is threadedly connected to the connecting ring 25, and a positioning hole for cooperating with the positioning block 26 is opened on the top, a vent hole 28 is opened on one side of the connecting block 12, the interior of the connecting block 12 is communicated with the interior of the sealing cover 2 through the vent hole 28, an air hole 29 is opened on the inner wall of the sealing cover 2 that is communicated with the interior of the mounting tube 21, a spring b210 is sleeved on the outside of the pressure sensor 24, and the spring b210 is connected to one side of the piston plate 22.

[0025] Before use, the two sealing rings 27 are respectively mounted on the positioning block 26 and the connecting ring 25, and then the sealing cover 2 is screwed onto the connecting ring 25. When mounting, the positioning hole is mounted on the positioning block 26. As the sealing cover 2 is screwed on, the sealing cover 2 presses the sealing ring 27 downward, causing the sealing ring 27 to deform and fill the gap. During the use of the overflow valve, as the valve core 11 continuously moves and rubs against the inner wall of the housing 1, a gap is generated between the valve core 11 and the housing 1, causing the air at the air inlet to flow into the connecting block 12 along the gap, and then out of the air vent hole 28. If leakage occurs at this time, the continuously leaked gas enters the sealing cover 2, and the air pressure inside the sealing cover 2 continues to increase. The air pressure enters the mounting tube 21 through the air hole 29. The elasticity of the spring b210 is less than the elasticity of the spring a16. Therefore, it is not necessary to be equal to the air pressure in the air path to push the piston plate 22 to move. The spring b210 can limit the piston plate 22 to prevent the piston plate 22 from moving randomly and accidentally touching the pressure sensor 24. Under the action of the air pressure inside the sealing cover 2, the piston plate 22 is pushed to squeeze the spring b210 to the sound and light alarm 23. When the piston plate 22 moves to one side, it contacts the pressure sensor 24. The pressure sensor 24 receives the electrical signal and transmits it to the sound and light alarm 23. The sound and light alarm 23 receives the electrical signal and emits a flashing light and a harsh sound, reminding the staff that the gas leakage needs to be repaired. The gas circuit can be closed in time to reduce the loss caused by the leakage and carry out the repair in time. When repairing, the sealing cover 2 is disassembled first. At this time, the sealing environment inside the sealing cover 2 is destroyed, the internal air pressure leakage is reduced, and the spring b210 releases its elasticity to push the piston plate 22 to the side of the air hole 29, so that the piston The plate 22 is separated from the pressure sensor 24. After separation, the pressure sensor 24 cannot detect the pressure of the piston plate 22, and stops sending electrical signals to the sound and light alarm 23. The sound and light alarm 23 stops working when it cannot receive the electrical signal. The connecting block 12 is removed, and a new valve core 11 is replaced. Then the connecting block 12 is installed, and a new sealing ring 27 is replaced. Then the sealing cover 2 is screwed onto the connecting ring 25 and put into use again. In this way, leakage caused by severe wear of the valve core 11 can be detected in time, and the staff can be notified in time to carry out maintenance, thereby reducing the loss caused by the leakage.

[0026] On the basis of Example 1, a mounting frame 3 is detachably connected to the top of the sealing cover 2, and a box body 31 is fixedly connected to the mounting frame 3. A cavity is opened inside the box body 31, and a turbine 32 is arranged inside the cavity. A worm 33 is engaged with one side of the turbine 32, and a servo motor 34 is fixedly connected to one side of the box body 31. The drive shaft of the servo motor 34 is connected to the turbine 32. An adjusting rod 14 is arranged inside the connecting block 12, and a sleeve 15 is fixedly connected to the bottom end of the adjusting rod 14. A spring a16 is arranged between the sleeve 15 and the valve core 11. A thread is opened outside the adjusting rod 14, and the adjusting rod 14 is threadedly connected to the inside of the turbine 32. A through hole for accommodating the movement of the adjusting rod 14 is opened on the shell 1, and limit blocks 35 are respectively fixedly connected to the two through holes. Two symmetrically arranged limit grooves 36 are opened on the adjusting rod 14, and the two limit blocks 35 are respectively slidably connected to the two limit grooves 36.

[0027] Since the air inlet end at the bottom of the shell 1 is connected to the air path, the internal air pressure in this area is also equal to the air pressure in the air path. Therefore, the air pressure in this area can be detected by the pressure gauge 13. By observing the pressure gauge 13, the maximum air pressure and the normal value of the air pressure can be known. When the air pressure is too high, the value on the pressure gauge 13 rises. When the air pressure is greater than the elasticity of the spring a16, the valve core 11 will be lifted up under the action of the air pressure. At this time, the air inlet at the bottom of the shell 1 is connected to the air outlet on one side, and the air pressure is discharged from the air outlet. After the air pressure drops to the normal value, the valve core 11 is pushed back to the initial position under the action of the spring a16, thereby disconnecting the air inlet from the air outlet. During the long-term use of the spring a16, metal fatigue will occur, resulting in a decrease in the elastic performance of the spring a16, which will cause the normal air pressure in the air path to lift the valve core 11. At this time, it is manifested in the air The maximum air pressure value and the normal air pressure value on the pressure gauge 13 are both reduced. At this time, it is necessary to adjust the distance between the adjusting rod 14 and the valve core 11. The closer the distance, the greater the elasticity of the spring a16, and the maximum air pressure value and the normal value increase. Conversely, the maximum air pressure value and the normal value increase and decrease. At this time, the servo motor 34 is started to drive the worm 33 to rotate, and the worm 33 rotates and engages with the thread on the outside of the turbine 32, thereby driving the turbine 32 to rotate. The turbine 32 rotates and rotates to engage with the thread on the outside of the adjusting rod 14. Since the adjusting rod 14 is restricted by the limit block 35, the adjusting rod 14 can only move vertically along the limit groove 36, thereby adjusting the distance between the adjusting rod 14 and the valve core 11. The movement direction of the adjusting rod 14 is controlled by controlling the rotation direction of the servo motor 34 to adjust the compression degree of the spring a16, thereby achieving the effect of adjusting the maximum bearing pressure.

[0028] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0029] The above is a detailed introduction to a safety ventilation line overflow valve with a self-detection function provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A safety ventilation line overflow valve with self-detection function, characterized in that: include: A housing (1), wherein a valve core (11) is slidably connected inside the housing (1), a connecting block (12) is threadedly connected to the top of the housing (1), a threaded hole is provided outside the housing (1) near the bottom, and a pressure gauge (13) is threadedly connected inside the threaded hole; A leakage alarm component, the leakage alarm component is arranged outside the housing (1) and is used to detect gas leakage; the leakage alarm component comprises: a sealing cover (2), a mounting cylinder (21), a piston plate (22), an audible and visual alarm (23), and a pressure sensor (24).

2. The safety ventilation line overflow valve with self-detection function according to claim 1, characterized in that: The connection block (12) is sleeved with a sealing cover (2) on the outside, the sealing cover (2) is fixedly connected to a mounting tube (21) on the outside, the mounting tube (21) is slidably connected to a piston plate (22) on the inside, an audible and visual alarm (23) is fixedly mounted on one end of the mounting tube (21) away from the sealing cover (2), and a pressure sensor (24) is fixedly mounted on one end of the audible and visual alarm (23) close to the piston plate (22).

3. The safety ventilation line overflow valve with self-detection function according to claim 1, characterized in that: The top of the sealing cover (2) is detachably connected to a mounting frame (3), the mounting frame (3) is fixedly connected to a box body (31), a cavity is provided inside the box body (31), a turbine (32) is provided inside the cavity, a worm (33) is engaged with one side of the turbine (32), a servo motor (34) is fixedly connected to one side of the box body (31), and a drive shaft of the servo motor (34) is connected to the turbine (32).

4. The safety ventilation line overflow valve with self-detection function according to claim 2, characterized in that: The shell (1) is fixedly connected to a connecting ring (25) on the outside, the connecting block (12) is fixedly connected to a positioning block (26) on the top, the positioning block (26) and the connecting ring (25) are respectively sleeved with sealing rings (27), the sealing cover (2) is threadedly connected to the connecting ring (25), and a positioning hole for cooperating with the positioning block (26) is opened on the top.

5. The safety ventilation pipeline overflow valve with self-detection function according to claim 2, characterized in that: A vent hole (28) is provided on one side of the connection block (12), the interior of the connection block (12) is communicated with the interior of the sealing cover (2) through the vent hole (28), an air hole (29) is provided on the inner wall of the sealing cover (2) and is communicated with the interior of the mounting tube (21), a spring b (210) is sleeved on the outside of the pressure sensor (24), and the spring b (210) is connected to one side of the piston plate (22).

6. The safety ventilation line overflow valve with self-detection function according to claim 3, characterized in that: An adjusting rod (14) is provided inside the connecting block (12), a sleeve (15) is fixedly connected to the bottom end of the adjusting rod (14), and a spring a (16) is provided between the sleeve (15) and the valve core (11).

7. The safety ventilation line overflow valve with self-detection function according to claim 6, characterized in that: The adjusting rod (14) is provided with a thread on the outside, and the adjusting rod (14) is threadedly connected to the inside of the turbine (32); the housing (1) is provided with a through hole for accommodating the movement of the adjusting rod (14); two limiting blocks (35) are respectively fixedly connected to the two through holes; the adjusting rod (14) is provided with two symmetrically arranged limiting grooves (36); the two limiting blocks (35) are respectively slidably connected to the two limiting grooves (36).

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