CN218000553U - Pneumatic pressure reducing valve with gas leakage protection function - Google Patents
Pneumatic pressure reducing valve with gas leakage protection function Download PDFInfo
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- CN218000553U CN218000553U CN202221925868.9U CN202221925868U CN218000553U CN 218000553 U CN218000553 U CN 218000553U CN 202221925868 U CN202221925868 U CN 202221925868U CN 218000553 U CN218000553 U CN 218000553U
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Abstract
The utility model discloses a pneumatic relief pressure valve with gas leakage protection function relates to relief pressure valve technical field: the gas leakage protection device comprises a diaphragm, a gas leakage protection mechanism, a first half valve body, a second half valve body, a first adjusting mechanism and a second adjusting mechanism, wherein the diaphragm is arranged between the first half valve body and the second half valve body, a first cavity is formed in the first half valve body, a damping hole is formed in the second half valve body, a valve port, a second cavity, a gas transmission channel and an exhaust channel are formed in the second half valve body, the valve port, the gas transmission channel and the exhaust channel are communicated, the exhaust channel is communicated with the second cavity through the damping hole, the second adjusting mechanism is arranged in the second half valve body, the first adjusting mechanism is used for controlling the pressure during gas output, the second adjusting mechanism is used for controlling the opening or closing of the gas transmission channel and the exhaust channel, and the gas leakage protection mechanism is used for detecting whether the diaphragm is damaged to cause gas leakage.
Description
Technical Field
The utility model relates to a relief pressure valve technical field especially relates to a pneumatic relief pressure valve with gas leakage protection function.
Background
The pressure reducing valve adopts the opening degree of an opening and closing part in a control valve body to adjust the flow of a medium, reduces the pressure of the medium, and simultaneously adjusts the opening degree of the opening and closing part by means of the action of the pressure behind the valve to keep the pressure behind the valve within a certain range.
At present, chinese utility model patent application with publication number CN211501784U, publication number 2020, 09 and 15 provides a high-pressure normally-open unloading type pneumatic pressure reducing valve, which includes: piston assembly, valve body, push rod, valve assembly, the diaphragm that has the pressure sensing characteristic, pressure regulating spring assembly. Valve body one end is fixed with piston assembly, and the other end is fixed with pressure regulating spring assembly, and the push rod setting carries out reciprocating motion with the inside wall cooperation of valve body inside the valve body, and diaphragm and piston assembly contact are passed through to push rod one end, and the diaphragm is sealed with piston assembly, and push rod other end butt is on valve assembly, and valve assembly receives pressure regulating spring assembly's elasticity, and valve assembly is the normally open valve.
When the air pressure of the inlet and the air pressure of the outlet are balanced, the pressure regulating spring in the piston assembly is in a compressed state, the diaphragm protrudes towards the direction of the pressure regulating spring assembly, the valve assembly is pushed open by the push rod for a long time, and the valve assembly is in a normally open state. When the pressure of the outlet is increased to a specified value, the force of the air pressure acting on the diaphragm completely overcomes the pressure of the pressure regulating spring, the valve assembly and the valve seat form a sealing pair, namely the main valve is closed to cut off the air pressure of the inlet, and the pressure of the outlet is kept stable.
In view of the above-mentioned related technologies, the inventor believes that, when the pneumatic pressure reducing valve adjusts the pressure of the outlet for a long time, the diaphragm inside the valve body may deform, and under the long-time use condition of the diaphragm, the diaphragm may be damaged, and then the gas leaks from the diaphragm, so that the pressure reducing valve loses the pressure change of the control outlet, and further, there is a great risk.
Disclosure of Invention
In order to reduce the probability that the air leakage of the pneumatic pressure reducing valve brings danger, the utility model provides a pneumatic pressure reducing valve with air leakage protection function.
The utility model provides a pair of pneumatic relief pressure valve with gas leakage protect function adopts following technical scheme:
a pneumatic pressure reducing valve with a gas leakage protection function comprises a diaphragm, a gas leakage protection mechanism, a first half valve body and a second half valve body, wherein a first cavity is formed in the first half valve body, a first adjusting mechanism used for controlling the pressure during gas output is arranged in the first cavity, a valve port, a second cavity, a gas transmission channel and a gas exhaust channel are formed in the second half valve body, the valve port, the gas transmission channel and the gas exhaust channel are communicated, a damping hole is formed in the second half valve body, the gas exhaust channel is communicated with the second cavity through the damping hole, a second adjusting mechanism is arranged in the second half valve body and used for controlling the gas transmission channel and the gas exhaust channel to be opened or closed, the diaphragm is arranged between the first half valve body and the second half valve body, and the first adjusting mechanism and the second adjusting mechanism are abutted to the diaphragm;
air leakage protection mechanism includes baroceptor and cylinder, the baroceptor sets up in first intracavity, the cylinder sets up on half valve body of second, the output and the second guiding mechanism transmission of cylinder are connected, baroceptor and cylinder signal of telecommunication are connected.
Optionally, the gas leakage protection mechanism still includes disk and axis of rotation, the length of axis of rotation is greater than exhaust passage's diameter, the axis of rotation rotates along exhaust passage's internal diameter direction and sets up on exhaust passage, the disk sets up in the axis of rotation, the axis of rotation is along the diametric direction and the coaxial fixed connection of disk of circular article, the diameter of disk is less than exhaust passage's internal diameter.
Optionally, the gas leakage protection mechanism further comprises a rubber ring, the rubber ring is sleeved on the wafer, and the outer diameter of the rubber ring is larger than the inner diameter of the exhaust passage.
Optionally, the gas leakage protection mechanism further comprises a speed reduction motor, the speed reduction motor is arranged on the exhaust passage, an output shaft of the speed reduction motor is in transmission connection with the rotating shaft, and the speed reduction motor is in electrical signal connection with the air pressure sensor.
Optionally, the gas leakage protection mechanism further comprises an alarm, the alarm is arranged on the first half valve body, and the alarm is connected with the air pressure sensor through an electric signal.
Optionally, first adjustment mechanism includes rotatory handle, pivot, pressure regulating spring, spring holder and clamp plate, set up threaded hole on the first half valve body, screw hole and first half valve body threaded connection are passed through in the pivot, rotatory handle sets up in the pivot, the spring holder sets up on the diaphragm, pressure regulating spring sets up on the spring holder, the clamp plate sets up on pressure regulating spring, rotatory handle's one end and clamp plate butt are kept away from in the pivot.
Optionally, the second adjusting mechanism includes a valve core, a return spring and a connecting block, the connecting block is arranged on the diaphragm, a second through hole is formed in the second half valve body, the return spring is arranged on the second half valve body, one end of the valve core is arranged on the return spring, the other end of the valve core penetrates through the second through hole to abut against the connecting block, and the valve core is in transmission connection with the output shaft of the air cylinder.
To sum up, the utility model discloses a following at least one useful technological effect:
1. when the pressure of gas needs to be adjusted, the rotating handle is rotated to enable the rotating shaft to rotate to the inside of the first half valve body to go deep, the rotating shaft can compress the spring through the pressing plate, the spring pushes the diaphragm and the connecting block on the diaphragm to move, the connecting block pushes the valve core to move, the valve core can enable the exhaust channel, the valve port and the gas transmission channel to be communicated when moving, when the gas pressure of the gas transmission channel is increased, the pressure of the exhaust channel can be increased along with the increase of the pressure, the gas of the exhaust channel can flow into the second cavity through the damping hole, the pressure of the second cavity is increased along with the increase of the pressure, the gas can push the diaphragm to move upwards, the pressure adjusting spring can push the valve core to move upwards, the gas flow at the valve port is reduced, and the gas pressure of the exhaust channel is kept constant; when the diaphragm leads to diaphragm and first half valve body because long-time removal, when the junction of the half valve body of second appears damaged, the valve body will lose pressure regulating power, gaseous damaged department that passes through the diaphragm flows into first chamber, the atmospheric pressure increase of first intracavity will be detected to the baroceptor of first intracavity this moment, baroceptor is signal transmission to cylinder, and gear motor, the output of cylinder will promote the valve body and remove, the valve body carries out the shutoff with gas transmission passageway, gear motor drives the disk and rotates, the disk carries out the shutoff with exhaust passage, and then reduce the harm because valve body gas leakage brought.
2. When the wafer rotates under the drive of the speed reducing motor, the rubber ring sleeved on the wafer can be tightly abutted against the inner wall of the exhaust channel, and the probability of gas backflow in the exhaust channel is further reduced.
3. When the pressure sensor detects that the pressure in the first cavity is increased, the pressure sensor transmits a signal to the alarm, and the alarm can send out an alarm signal all the time so as to facilitate the patrol personnel to find the air leakage valve body in time.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is an enlarged view of a portion a in fig. 2.
Description of reference numerals: 100. a membrane; 200. a first valve half; 210. a first chamber; 220. a threaded hole; 300. a second valve half; 310. a damping hole; 320. a valve port; 330. a second chamber; 340. a gas transmission channel; 350. an exhaust passage; 400. a first adjustment mechanism; 410. rotating the handle; 420. a rotating shaft; 430. a pressure regulating spring; 440. a spring seat; 450. pressing a plate; 500. a second adjustment mechanism; 510. a valve core; 520. a return spring; 530. connecting blocks; 600. a gas leakage protection mechanism; 610. an air pressure sensor; 620. a cylinder; 630. a reduction motor; 640. a wafer; 650. a rotating shaft; 660. a rubber ring; 670. an alarm.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-3.
The embodiment of the application discloses a pneumatic pressure reducing valve with a gas leakage protection function, referring to fig. 1, the pneumatic pressure reducing valve comprises a diaphragm 100, a gas leakage protection mechanism 600, a first half valve body 200, a second half valve body 300, a first adjustment mechanism 400 and a second adjustment mechanism 500, wherein the diaphragm 100 is arranged between the first half valve body 200 and the second half valve body 300, a first cavity 210 is arranged inside the first half valve body 200, a damping hole 310, a valve port 320, a second cavity 330, a gas transmission channel 340 and an exhaust channel 350 are arranged inside the second half valve body 300, the valve port 320, the gas transmission channel 340 and the exhaust channel 350 are communicated, the exhaust channel 350 is communicated with the second cavity 330 through the damping hole 310, the second adjustment mechanism 500 is arranged inside the second half valve body 300, the first adjustment mechanism 400 is used for controlling the pressure during gas output, the second adjustment mechanism 500 is used for controlling the opening or closing of the gas transmission channel 340 and the exhaust channel 350, and the gas leakage protection mechanism 600 is used for detecting whether the diaphragm 100 is damaged to cause gas leakage.
Referring to fig. 2, first adjustment mechanism 400 includes rotatory handle 410, pivot 420, pressure regulating spring 430, spring holder 440 and clamp plate 450, set up threaded hole 220 on the first half valve body 200, pivot 420 passes through threaded hole 220 and first half valve body 200 threaded connection, rotatory handle 410 is served at first half valve body 200 is kept away from to pivot 420 through bolted connection, spring holder 440 bonds on diaphragm 100, pressure regulating spring 430 passes through the screw connection on spring holder 440, clamp plate 450 is served at one that spring holder 440 was kept away from to pressure regulating spring 430 through the screw connection, the one end and the clamp plate 450 butt that rotatory handle 410 was kept away from to pivot 420.
Referring to fig. 2, the second adjusting mechanism 500 includes a valve core 510, a return spring 520, and a connecting block 530, the connecting block 530 is adhered to a surface of the diaphragm 100 away from the pressure plate 450, a second through hole is formed in the second half valve body 300, the return spring 520 is connected to the second half valve body 300 by a bolt, one end of the valve core 510 is connected to the return spring 520 by a bolt, and the other end of the valve core 510 passes through the second through hole and abuts against the connecting block 530.
When the pressure of the gas needs to be adjusted, the rotating handle 410 is rotated to enable the rotating shaft 420 to rotate to go deep into the first valve body half 200, the rotating shaft 420 compresses the spring through the pressure plate 450, the spring pushes the diaphragm 100 and the connecting block 530 on the diaphragm 100 to move, the connecting block 530 pushes the valve core 510 to move, the valve core 510 can enable the exhaust channel 350, the valve port 320 and the gas transmission channel 340 to be communicated when moving, when the gas pressure of the gas transmission channel 340 is increased, the pressure of the exhaust channel 350 can increase along with the increase of the pressure of the exhaust channel 350, the gas of the exhaust channel 350 can flow into the second chamber 330 through the damping hole 310, the pressure of the second chamber 330 increases along with the increase of the pressure, the gas can push the diaphragm 100 to move upwards, the spring of the pressure adjusting valve 430 can push the valve core 510 to move upwards, the gas flow at the valve port 320 is reduced, and the gas pressure of the exhaust channel 350 is kept constant.
Referring to fig. 2 and 3, the gas leakage protection mechanism 600 includes a gas pressure sensor 610 and a cylinder 620, the gas pressure sensor 610 is connected to the first cavity 210 of the first valve body half 200 through a bolt, the cylinder 620 is connected to the second valve body half 300 through a bolt, an output end of the cylinder 620 is in transmission connection with the valve core 510, and the gas pressure sensor 610 is in electrical signal connection with the cylinder 620.
Referring to fig. 2 and 3, the gas leakage protection mechanism 600 further includes a disc 640, a rotation shaft 650 and a speed reduction motor 630, the length of the rotation shaft 650 is greater than the diameter of the exhaust channel 350, the rotation shaft 650 is rotatably disposed on the exhaust channel 350 along the inner diameter direction of the exhaust channel 350, the disc 640 is welded on the rotation shaft 650, the rotation shaft 650 is coaxially and fixedly connected with the disc 640 along the diameter direction of the circular part, the diameter of the disc 640 is smaller than the inner diameter of the exhaust channel 350, the speed reduction motor 630 is connected to the exhaust channel 350 through a bolt, the output shaft of the speed reduction motor 630 is in transmission connection with the rotation shaft 650, the speed reduction motor 630 is in electrical signal connection with the air pressure sensor 610, a rubber ring 660 is sleeved on the outer edge of the disc 640, and the outer diameter of the rubber ring 660 is greater than the inner diameter of the exhaust channel 350.
When the diaphragm 100 is damaged at the joint of the diaphragm 100 and the first half valve body 200 or the second half valve body 300 due to long-time movement, the valve body loses pressure regulation capability, gas flows into the first cavity 210 through the damaged part of the diaphragm 100, at this time, the air pressure sensor 610 in the first cavity 210 detects that the air pressure in the first cavity 210 is increased, the air pressure sensor 610 transmits a signal to the air cylinder 620 and the speed reducing motor 630, the output end of the air cylinder 620 pushes the valve body to move, the valve body seals the air delivery channel 340, the speed reducing motor 630 drives the wafer 640 to rotate, the wafer 640 seals the air exhaust channel 350, and further harm caused by air leakage of the valve body is reduced; when the disk 640 is driven by the speed reduction motor 630 to rotate, the rubber ring 660 sleeved on the disk 640 is tightly abutted against the inner wall of the exhaust channel 350, so that the probability of gas backflow in the exhaust channel 350 is reduced.
Referring to fig. 2, the gas leakage protection mechanism 600 further comprises an alarm 670, wherein the alarm 670 is connected to the first valve body 200 through a bolt, and the alarm 670 is in electrical signal connection with the air pressure sensor 610; when the pressure sensor 610 detects that the pressure in the first cavity 210 is increased, the pressure sensor 610 transmits a signal to the alarm 670, and the alarm 670 sends out an alarm signal at any time, so that the patrolman can find the air-leaking valve body in time.
The implementation principle of the pneumatic pressure reducing valve with the air leakage protection function is as follows: when the pressure of the gas needs to be adjusted, the rotating handle 410 is rotated to enable the rotating shaft 420 to rotate to go deep into the first valve half 200, the rotating shaft 420 compresses the spring through the pressure plate 450, the spring pushes the diaphragm 100 and the connecting block 530 on the diaphragm 100 to move, the connecting block 530 pushes the valve core 510 to move, the valve core 510 can enable the exhaust channel 350, the valve port 320 and the gas transmission channel 340 to be communicated when moving, when the gas pressure of the gas transmission channel 340 is ever high, the pressure of the exhaust channel 350 can increase along with the increase, the gas of the exhaust channel 350 can flow into the second chamber 330 through the damping hole 310, the pressure of the second chamber 330 increases along with the increase, the gas can push the diaphragm 100 to move upwards, the spring of the pressure adjusting valve 430 can push the valve core 510 to move upwards, the gas flow at the valve port 320 is reduced, and the gas pressure of the exhaust channel 350 is kept constant; when the diaphragm 100 is damaged due to long-time movement, the connection between the diaphragm 100 and the first half valve body 200 or the second half valve body 300 is damaged, the valve body loses pressure regulation capability, gas flows into the first cavity 210 through the damaged part of the diaphragm 100, at this time, the air pressure sensor 610 in the first cavity 210 detects the increase of air pressure in the first cavity 210, the air pressure sensor 610 transmits a signal to the air cylinder 620 and the speed reducing motor 630, the output end of the air cylinder 620 pushes the valve core 510 to move, the valve core 510 blocks the air transmission channel 340, the speed reducing motor 630 drives the wafer 640 to rotate, the wafer 640 blocks the air exhaust channel 350, and further harm caused by air leakage of the diaphragm 100 is reduced.
The above is the preferred embodiment of the utility model, not limit according to this the utility model discloses a protection scope, the event: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a pneumatic relief pressure valve with gas leakage protect function which characterized in that: the gas leakage protection valve comprises a diaphragm (100), a gas leakage protection mechanism (600), a first half valve body (200) and a second half valve body (300), wherein a first cavity (210) is formed in the first half valve body (200), a first adjusting mechanism (400) used for controlling the pressure during gas output is arranged in the first cavity (210), a valve port (320), a second cavity (330), a gas transmission channel (340) and an exhaust channel (350) are formed in the second half valve body (300), the valve port (320), the gas transmission channel (340) and the exhaust channel (350) are communicated, a damping hole (310) is formed in the second half valve body (300), the exhaust channel (350) is communicated with the second cavity (330) through the damping hole (310), a second adjusting mechanism (500) is arranged in the second half valve body (300), the second adjusting mechanism (500) is used for controlling the opening or closing of the gas transmission channel (340) and the exhaust channel (350), the diaphragm (100) is arranged between the first half valve body (200) and the second half valve body (300), and the first adjusting mechanism (400) is abutted against the second adjusting mechanism (500);
the gas leakage protection mechanism (600) comprises a gas pressure sensor (610) and a cylinder (620), wherein the gas pressure sensor (610) is arranged in a first cavity (210), the cylinder (620) is arranged on a second half valve body (300), the output end of the cylinder (620) is in transmission connection with a second adjusting mechanism (500), and the gas pressure sensor (610) is in electrical signal connection with the cylinder (620).
2. A pneumatic pressure reducing valve with blow-by protection as claimed in claim 1, wherein: air leakage protection mechanism (600) still include disk (640) and axis of rotation (650), the length of axis of rotation (650) is greater than the diameter of exhaust passage (350), the internal diameter direction rotation setting on exhaust passage (350) of axis of rotation (650) along exhaust passage (350), disk (640) sets up on axis of rotation (650), the diametric (al) and the coaxial fixed connection of disk (640) are followed in axis of rotation (650), the diameter of disk (640) is less than the internal diameter of exhaust passage (350).
3. A pneumatic pressure relief valve with blow-by protection as claimed in claim 2, wherein: the gas leakage protection mechanism (600) further comprises a rubber ring (660), the rubber ring (660) is sleeved on the wafer (640), and the outer diameter of the rubber ring (660) is larger than the inner diameter of the exhaust channel (350).
4. A pneumatic pressure reducing valve with blow-by protection according to claim 3, wherein: air leakage protection mechanism (600) still includes gear motor (630), gear motor (630) set up on exhaust passage (350), the output shaft and the axis of rotation (650) transmission of gear motor (630) are connected, gear motor (630) and baroceptor (610) signal of telecommunication are connected.
5. The pneumatic pressure reducing valve with a gas leakage protection function according to claim 4, wherein: the gas leakage protection mechanism (600) further comprises an alarm (670), the alarm (670) is arranged on the first half valve body (200), and the alarm (670) is connected with an electric signal of the air pressure sensor (610).
6. A pneumatic pressure reducing valve with a blow-by protection function according to any one of claims 1 to 5, characterized in that: first guiding mechanism (400) is including rotatory handle (410), pivot (420), pressure regulating spring (430), spring holder (440) and clamp plate (450), set up threaded hole (220) on first half valve body (200), pivot (420) are through threaded hole (220) and first half valve body (200) threaded connection, rotatory handle (410) set up on pivot (420), spring holder (440) set up on diaphragm (100), pressure regulating spring (430) set up on spring holder (440), clamp plate (450) set up on pressure regulating spring (430), the one end and clamp plate (450) butt of rotatory handle (410) are kept away from in pivot (420).
7. A pneumatic pressure reducing valve with a blow-by protection function according to any one of claims 1 to 5, characterized in that: the second adjusting mechanism (500) comprises a valve core (510), a return spring (520) and a connecting block (530), the connecting block (530) is arranged on the diaphragm (100), a second through hole is formed in the second half valve body (300), the return spring (520) is arranged on the second half valve body (300), one end of the valve core (510) is arranged on the return spring (520), the other end of the valve core (510) penetrates through the second through hole to abut against the connecting block (530), and the valve core (510) is in transmission connection with an output shaft of the air cylinder (620).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221925868.9U CN218000553U (en) | 2022-07-25 | 2022-07-25 | Pneumatic pressure reducing valve with gas leakage protection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221925868.9U CN218000553U (en) | 2022-07-25 | 2022-07-25 | Pneumatic pressure reducing valve with gas leakage protection function |
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| CN218000553U true CN218000553U (en) | 2022-12-09 |
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| CN202221925868.9U Active CN218000553U (en) | 2022-07-25 | 2022-07-25 | Pneumatic pressure reducing valve with gas leakage protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117906540A (en) * | 2024-03-20 | 2024-04-19 | 陕西延长石油矿业有限责任公司 | Pneumatic supporting shoe sliding detection device and detection method thereof |
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2022
- 2022-07-25 CN CN202221925868.9U patent/CN218000553U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117906540A (en) * | 2024-03-20 | 2024-04-19 | 陕西延长石油矿业有限责任公司 | Pneumatic supporting shoe sliding detection device and detection method thereof |
| CN117906540B (en) * | 2024-03-20 | 2024-06-04 | 陕西延长石油矿业有限责任公司 | Pneumatic supporting shoe sliding detection device and detection method thereof |
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