CN113236793A - Self-control self-calibration anti-failure bidirectional stop control valve - Google Patents
Self-control self-calibration anti-failure bidirectional stop control valve Download PDFInfo
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- CN113236793A CN113236793A CN202110432802.XA CN202110432802A CN113236793A CN 113236793 A CN113236793 A CN 113236793A CN 202110432802 A CN202110432802 A CN 202110432802A CN 113236793 A CN113236793 A CN 113236793A
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 64
- 238000005192 partition Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to the technical field of valves, in particular to an automatic control self-calibration anti-failure bidirectional stop control valve which comprises a valve body, wherein a high-pressure side flow passage and a low-pressure side flow passage are respectively arranged at two ends of the valve body, a valve port is formed between the high-pressure side flow passage and the low-pressure side flow passage, valve seats are arranged at two sides of the valve port, and a driving box is arranged in the valve port; the driving rod drives the transmission medium in the driving box to drive the first valve plug and the second valve plug on two sides of the valve body, so that the first valve plug and the second valve plug can close the high-pressure side and then close the low-pressure side firstly when closed, and open the low-pressure side and then open the high-pressure side when opened, so that the opening and closing pressure of the valve plugs can be reduced, large holding pressure is not needed, the valve is suitable for pipelines with larger pressure, fluid can be effectively prevented from leaking from the valve by using the two valves, and the safety is improved.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an anti-failure bidirectional stop control valve capable of self-control and self-calibration.
Background
The existing valve for the high-pressure gas tank usually adopts a single plug head, so that the service life is short. Impurities often exist in high-pressure liquid storage tanks such as liquid chlorine tanks and liquefied gas, the valve body is easy to leak, and the like, so that great hidden dangers are caused to social safety.
The invention of application No. CN201210466469.5 therefore relates to a two-way shut-off valve and a method of assembling the same, the two-way shut-off valve comprising: the long screw rod sequentially passes through the air guide pipes on the valve cover and the middle partition plate; the long screw rod is in threaded fit with the valve cover, and an outer plug head opposite to the top port of the air guide pipe and an inner plug head opposite to the bottom port of the air guide pipe are arranged on the long screw rod; the inner plug head and the outer plug head are suitable for being displaced towards or away from each other when the long screw rod is rotated. When the outer plug head is tightly pressed on the top port of the air duct in a sealing manner, the inner plug head is suitable for axially displacing along the long screw rod and tightly pressing the outer plug head on the bottom port of the air duct in a sealing manner so as to close the valve; the valve can be opened by rotating the long screw rod reversely. After the valve body is closed, even if the leakproofness of one of the plug heads is reduced due to abrasion or impurities, the other plug head still closes the valve body, and the safety of the high-pressure liquid storage tank is ensured.
However, the scheme utilizes two nested screws to simultaneously control two valve plugs to close, in addition, the invention with the application number of CN202010064203.2 discloses a two-way stop valve, which utilizes a connecting rod structure to close and seal a valve port of a second communicating pipe while a main valve port of a first communicating pipe is closed, so that two-way stop is realized, safety and reliability are realized, but the technical schemes still have the conditions of large opening and closing pressure and difficult opening and closing during closing and opening, and the pressure also easily causes the loose matching between the two screws or the loose matching between the connecting rod mechanisms, so that the later period can not be well synchronously matched.
Disclosure of Invention
The invention aims to provide an automatic control self-calibration anti-failure bidirectional stop control valve to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the anti-failure bidirectional stop control valve with self-control and self-calibration comprises a valve body, wherein a high-pressure side flow channel and a low-pressure side flow channel are respectively arranged at two ends of the valve body, a valve port is formed between the high-pressure side flow channel and the low-pressure side flow channel, valve seats are arranged at two sides of the valve port, a driving box is arranged in the valve port, a first valve plug and a second valve plug used for sealing the two valve seats are respectively arranged at two ends of the driving box, and a driving rod in transmission connection with the driving box is arranged on the outer wall of the valve body.
The high pressure side runner is located one side of the high pressure medium, prevent that the high pressure medium from overflowing from the valve body, the low pressure side runner is located the discharge side, fluid medium flows out from the valve port between high pressure side runner and the low pressure side runner, form bellied disk seat on the terminal surface of the both sides of valve port, first valve plug and second valve plug can laminate on the disk seat, seal the both sides of valve port, like this, after closing the valve door, first valve plug and second valve plug all can not receive the impact of pressure, consequently also need very big closing pressure to keep, and can reduce the wearing and tearing of first valve plug and second valve plug, and the closing of first valve plug and second valve plug only can by the drive of actuating lever.
Preferably, a partition plate and a flow plate are arranged inside the drive box, a drive piston is arranged at one end of the drive rod, the drive piston is located inside the drive box and attached to the inner wall of the drive box, a high-pressure side closed valve drive cavity is formed in one side of the drive piston and located inside the drive box, an open valve drive cavity is formed in the other side of the drive piston, and a high-pressure side open valve drive cavity is formed in one side of the partition plate, which is far away from the open valve drive cavity.
The high-pressure side closed valve driving cavity is provided with a transmission medium with high density, such as high-density gas or liquid, the density of the transmission medium in the open valve driving cavity is smaller than that of the transmission medium in the high-pressure side closed valve driving cavity, the transmission medium in the high-pressure side open valve driving cavity is positioned between the high-pressure side closed valve driving cavity and the open valve driving cavity, when the driving piston is driven by the driving rod to move between the high-pressure side closed valve driving cavity and the open valve driving cavity, the transmission medium in the high-pressure side closed valve driving cavity and the open valve driving cavity can be correspondingly compressed or stretched, in the state of closing the valve, when the driving piston moves upwards, the transmission medium in the high-pressure side closed valve driving cavity is compressed, and because the density is high and the first valve plug is in a compressed state and is easy to close, the first valve plug is closed firstly, and then when the pressure applied to the second valve plug disappears, the stretched transmission medium in the open valve driving cavity recovers to close the second valve plug, the transmission utilizes non-rigid transmission medium, has self-adaptive adjusting capacity and keeps close tightly, when the valve is opened, when the driving piston moves downwards, the transmission medium in the valve opening driving cavity is compressed, the pressure on one side of the second valve plug is low, so the second valve plug is opened firstly, the transmission medium in the high-pressure side valve closing driving cavity is stretched when one side of the first valve plug is subjected to high pressure, at the moment, the transmission medium in the second valve closing driving cavity needs to be pressurized into the high-pressure side valve opening driving cavity, and the diameters of the valve opening driving cavity and the high-pressure side valve closing driving cavity can be reduced, so that the labor-saving opening effect is achieved.
Preferably, the one end of first valve stopper is equipped with first piston, the one end of second valve stopper is equipped with the second piston, first piston is located open valve drive chamber is opened to the high pressure side, just the opposite side of first piston forms first valve stopper closed valve chamber, the second piston is located open valve drive chamber, just the opposite side of second piston forms second valve stopper closed valve drive chamber, first valve stopper with between the first piston the second valve stopper with all through connecting rod fixed connection between the second piston.
The first piston can move leftwards or rightwards by controlling the pressure on two sides of the first piston in the high-pressure side opening valve driving cavity so as to achieve the purpose of opening or closing the first valve plug, and the second piston is in the valve opening driving cavity, and the pressure on the left end and the right end of the second piston can control the second valve plug to close or open the valve.
Preferably, still be equipped with first connecting pipe, second connecting pipe and third connecting pipe on the drive box, first connecting pipe with first valve stopper closed valve chamber intercommunication, the second connecting pipe with second valve stopper closed valve drive chamber intercommunication, the third connecting pipe with high-pressure side open valve drive chamber intercommunication, first valve stopper close the valve chamber with pass through between the high-pressure side closed valve drive chamber first connecting pipe is connected, the third connecting pipe with through being located between the second connecting pipe elastic plunger in the valve body connects.
In order to increase the interaction relation between the first piston and the second piston and reduce the pressure when the valve is opened, the second connecting pipe, the third connecting pipe and the elastic plunger are utilized to realize the connection between the high-pressure side opening valve driving cavity and the second valve plug closing valve driving cavity, when the second piston moves rightwards, namely the second valve plug is opened, the pressure is increased in the high-pressure side opening valve driving cavity through the transmission effect of the elastic plunger, the opening force of the first valve plug is increased, and the first valve plug is enabled to be opened easily.
Preferably, the first connecting pipe extends from the end face of the drive box to the inner wall of the valve port, a high-pressure side drive cavity connecting channel communicated with the first connecting pipe and a high-pressure side closed valve drive cavity is arranged in the valve body, and the second connecting pipe extends from the end face of the drive box to the inner wall of the valve port.
In order to ensure that the first piston and the second piston can move to a limiting state in the moving process and cannot block a connecting channel with a high-pressure side valve closing driving cavity or a second valve closing driving cavity, the first connecting pipe and the second connecting pipe are arranged on the end face, the first piston and the second piston cannot be influenced in the moving process, and the sealing of the first piston and the second piston cannot be abraded.
Preferably, be equipped with the connection chamber in the valve body, elasticity plunger sliding connection is in the inner wall of connection chamber, the elasticity plunger includes first cock board, spring, second cock board, arc and spacing ring, pass through between first cock board and the second cock board spring elastic connection, the arc is located first cock board is kept away from one side of spring, the spacing ring is located between first cock board and the second cock board, and fix the inner wall of valve body.
By means of the connecting cavity, when the first valve plug is closed, the transmission medium in the high-pressure side opening valve driving cavity is squeezed to press the elastic plunger in the connecting cavity, so that the other end of the elastic plunger pressurizes the second valve plug closing valve driving cavity, the second valve plug tends to close, and after the first valve plug is closed, the energy stored in the elastic plunger and the energy stored in the opening valve driving cavity and the second valve plug closing valve driving cavity are released to achieve self-calibration closing.
Preferably, the arc-shaped plate comprises an arc-shaped wall surface, a connecting seam is arranged on the side wall of the arc-shaped wall surface, the connecting seam corresponds to the third connecting pipe, and a sealed transmission chamber is formed between the arc-shaped wall surface and the valve body.
When the transmission medium in the high-pressure side open valve driving cavity is pressurized to the transmission chamber between the arc plates through the third connecting pipe and the connecting seam, the first plug plate is pressed to move rightwards, the spring is compressed, then the second plug plate moves rightwards again, the pressure is pressurized to the second valve plug valve driving cavity, the limiting ring can limit the moving positions of the first plug plate and the second plug plate, and the first plug plate or the second plug plate is prevented from being excessively displaced.
Preferably, a bypass channel is arranged on the periphery of the valve seat of the high-pressure side flow channel of the valve body, extends to the outer side of the connecting cavity and is communicated with the connecting cavity through a through hole, and the through hole is located at one side, close to the arc-shaped plate, of the limiting ring.
When the first piston is opened, namely the first plug plate and the second plug plate move from right to left, and the first plug plate is positioned on the left side of the through hole, medium on the high-pressure side enters between the first plug plate and the second plug plate from the through hole, so that the high-pressure side opening valve driving cavity is further pressurized.
Preferably, the through hole is staggered with the connecting seam in the circumferential direction of the arc wall surface.
In order to enable the through-hole to be closed by the curved wall surface, the first plug plate is opened only when it is located on the left side of the through-hole.
Preferably, the handle is arranged at one end, far away from the driving piston, of the driving rod, the driving piston comprises a threaded rod and a polished rod, the polished rod is rotatably connected with the threaded rod, the threaded rod is in threaded transmission with the valve body, and the polished rod is fixedly connected with the driving piston.
When the handle is rotated, the threaded rod rotates relative to the valve body and performs thread transmission, and in the transmission process, the threaded rod freely rotates relative to the polished rod and simultaneously drives the polished rod to move up and down, and the polished rod moves up and down to drive the driving piston to move up and down.
Compared with the prior art, the invention has the beneficial effects that:
the driving rod drives the transmission medium in the driving box to drive the first valve plug and the second valve plug on two sides of the valve body, so that the first valve plug and the second valve plug can close the high-pressure side and then close the low-pressure side firstly when closed, and open the low-pressure side and then open the high-pressure side when opened, so that the opening and closing pressure of the valve plugs can be reduced, large holding pressure is not needed, the valve is suitable for pipelines with larger pressure, fluid can be effectively prevented from leaking from the valve by using the two valves, and the safety is improved.
Drawings
FIG. 1 is a schematic structural diagram of an open state of an anti-failure bidirectional stop control valve with automatic control self-calibration according to the present invention;
FIG. 2 is a schematic structural diagram of a closed state of a high-pressure side valve of the anti-failure bidirectional stop control valve with self-control and self-calibration functions;
FIG. 3 is a schematic structural diagram of the valve closing states at two sides of the fail-safe bidirectional stop control valve with self-control and self-calibration functions of the invention;
FIG. 4 is a schematic structural diagram of the low-pressure side valve opening state of the anti-failure bidirectional stop control valve with self-control self-calibration according to the present invention;
FIG. 5 is a schematic view of the structure of FIG. 1 at A according to the present invention;
FIG. 6 is a schematic structural diagram of an arc-shaped plate in the auto-controlled self-calibration anti-failure bidirectional stop control valve of the invention.
Reference numbers in the figures: 1. a valve body; 101. a high pressure side runner; 102. a low-pressure side flow passage; 103. a valve port; 104. a bypass channel; 105. a through hole; 11. a valve seat; 2. a drive rod; 21. a handle; 22. a drive piston; 3. a drive cartridge; 301. a high-pressure side valve closing driving cavity; 302. opening the valve driving cavity; 303. a high-pressure side open valve driving cavity; 31. a partition plate; 32. a flow plate; 33. a first connecting pipe; 34. a second connecting pipe; 35. a third connecting pipe; 4. a first valve plug; 401. the first valve closes the valve cavity; 402. the high-pressure side driving cavity is connected with the channel; 41. a first piston; 5. a second valve plug; 501. a second valve closing drive chamber; 51. a second piston; 52. a connecting rod; 6. an elastic plunger; 601. a connecting cavity; 61. a first plug plate; 62. a spring; 63. a second plug plate; 64. an arc-shaped plate; 641. an arc-shaped wall surface; 642. connecting seams; 643. a transmission chamber; 65. a limit ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1 to 6, the self-controlled self-calibrated anti-failure bidirectional stop control valve includes a valve body 1, a high-pressure side flow passage 101 and a low-pressure side flow passage 102 are respectively disposed at two ends of the valve body 1, a valve port 103 is formed between the high-pressure side flow passage 101 and the low-pressure side flow passage 102, valve seats 11 are disposed at two sides of the valve port 103, a driving box 3 is disposed in the valve port 103, a first valve plug 4 and a second valve plug 5 for sealing the two valve seats 11 are respectively disposed at two ends of the driving box 3, and a driving rod 2 in transmission connection with the driving box 3 is disposed on an outer wall of the valve body 1.
The high pressure side flow passage 101 is located on one side of the high pressure medium to prevent the high pressure medium from overflowing from the valve body 1, the low pressure side flow passage 102 is located on the discharge side, the fluid medium flows out from the valve port 103 between the high pressure side flow passage 101 and the low pressure side flow passage 102, a convex valve seat 11 is formed on the end surfaces of two sides of the valve port 103, the first valve plug 4 and the second valve plug 5 can be attached to the valve seat 11 to seal two sides of the valve port 103, thus after the valve is closed, the first valve plug 4 and the second valve plug 5 are not impacted by pressure, so that large closing pressure is not needed to be kept, the abrasion of the first valve plug 4 and the second valve plug 5 can be reduced, and the first valve plug 4 and the second valve plug 5 can be closed only by the driving of the driving rod 2.
Specifically, as shown in fig. 1 to 4, a partition plate 31 and a flow plate 32 are disposed inside the drive box 3, a drive piston 22 is disposed at one end of the drive rod 2, the drive piston 22 is disposed inside the drive box 3 and attached to an inner wall of the drive box 3, a high-pressure side closed valve drive cavity 301 is formed at one side of the drive piston 22 inside the drive box 3, an open valve drive cavity 302 is formed at the other side of the drive piston 22, and a high-pressure side open valve drive cavity 303 is formed at one side of the partition plate 31 away from the open valve drive cavity 302.
The high-pressure side closed valve driving cavity 301 has a dense transmission medium, such as a dense gas or liquid, in it, and the density of the transmission medium in the open valve driving cavity 302 is less than that of the transmission medium in the high-pressure side closed valve driving cavity 301, and the transmission medium in the high-pressure side open valve driving cavity 303 is located between the high-pressure side closed valve driving cavity 301 and the open valve driving cavity 302, and when the driving piston 22 is driven by the driving rod 2 to move between the high-pressure side closed valve driving cavity 301 and the open valve driving cavity 302, the transmission medium in the high-pressure side closed valve driving cavity 301 and the open valve driving cavity 302 will be compressed or stretched accordingly, and in the closed valve state, as shown in fig. 1-3, when the driving piston 22 moves upwards, the transmission medium in the high-pressure side closed valve driving cavity 301 is compressed, and because its density is large and the first valve plug 4 is in a compressed state, it is easy to be closed, so the first valve plug 4 is closed first, then when the pressure applied to the second valve plug 5 disappears, the stretched transmission medium in the valve opening driving cavity 302 returns to close the second valve plug 5, the transmission utilizes non-rigid transmission medium, has adaptive adjustment capability and keeps close tightly, when in the valve opening state, from the state of fig. 3-4, when the driving piston 22 moves downwards, the transmission medium in the valve opening driving cavity 302 is compressed, the pressure on the second valve plug 5 side is also low, so the transmission medium is opened firstly, and the transmission medium in the high pressure side valve closing driving cavity 301 is stretched due to the high pressure applied to the first valve plug 4 side, at this time, the transmission medium in the second valve closing driving cavity 501 needs to be pressurized to the high pressure side valve opening driving cavity 303, and simultaneously, the diameters of the valve opening driving cavity 302 and the high pressure side valve closing driving cavity 301 can be made small, so as to achieve a more labor-saving opening effect.
Specifically, one end of the first valve plug 4 is provided with a first piston 41, one end of the second valve plug 5 is provided with a second piston 51, the first piston 41 is located in the high-pressure side opening and closing valve driving cavity 303, the other side of the first piston 41 forms a first valve plug closing valve cavity 401, the second piston 51 is located in the opening valve driving cavity 302, the other side of the second piston 51 forms a second valve plug closing valve driving cavity 501, and the first valve plug 4 and the first piston 41, and the second valve plug 5 and the second piston 51 are fixedly connected through a connecting rod 52.
The first piston 41 can be moved leftward or rightward for the purpose of opening or closing the first valve plug 4 by controlling the pressure on both sides of the first piston 41 in the high-pressure side opening valve driving chamber 303, and the second piston 51 can be moved in the opening valve driving chamber 302 by controlling the pressure on both left and right sides thereof to close or open the second valve plug 5.
Specifically, the driving box 3 is further provided with a first connecting pipe 33, a second connecting pipe 34 and a third connecting pipe 35, the first connecting pipe 33 is communicated with the first valve closing valve cavity 401, the second connecting pipe 34 is communicated with the second valve closing valve driving cavity 501, the third connecting pipe 35 is communicated with the high-pressure side opening valve driving cavity 303, the first valve closing valve cavity 401 is connected with the high-pressure side closing valve driving cavity 301 through the first connecting pipe 33, and the third connecting pipe 35 is connected with the second connecting pipe 34 through an elastic plunger 6 located in the valve body 1.
In order to increase the interaction relationship between the first piston 41 and the second piston 51 and reduce the pressure when the valve is opened, the second connecting pipe 34, the third connecting pipe 35 and the elastic plunger 6 are used for realizing the connection between the high-pressure side opening valve driving cavity 303 and the second valve closing valve driving cavity 501, when the second piston 51 moves to the right, namely the second valve plug 5 is opened, the pressure is increased into the high-pressure side opening valve driving cavity 303 through the transmission action of the elastic plunger 6, and the opening force of the first valve plug 4 is increased, so that the first valve plug 4 is easy to open.
Specifically, as shown in fig. 1 to 4, the first connection pipe 33 extends from the end surface of the drive cassette 3 to the inner wall of the valve port 103, the valve body 1 is provided therein with a high-pressure side drive chamber connection passage 402 communicating with the first connection pipe 33 and the high-pressure side valve-closing drive chamber 301, and the second connection pipe 34 extends from the end surface of the drive cassette 3 to the inner wall of the valve port 103.
In order to ensure that the first piston 41 and the second piston 51 can move to the limit state during the movement and do not block the connection channel with the high-pressure side valve closing drive chamber 301 or the second valve closing drive chamber 501, the first connection pipe 33 and the second connection pipe 34 are both provided at the end surfaces and are not affected during the movement of the first piston 41 and the second piston 51 and do not cause the sealing of the first piston 41 and the second piston 51 to be worn.
Specifically, a connecting cavity 601 is arranged in the valve body 1, the elastic plunger 6 is slidably connected to the inner wall of the connecting cavity 601, the elastic plunger 6 comprises a first plug plate 61, a spring 62, a second plug plate 63, an arc-shaped plate 64 and a limiting ring 65, the first plug plate 61 and the second plug plate 63 are elastically connected through the spring 62, the arc-shaped plate 64 is located on one side, away from the spring 62, of the first plug plate 61, and the limiting ring 65 is located between the first plug plate 61 and the second plug plate 63 and fixed to the inner wall of the valve body 1.
With the connecting chamber 601, when the first valve plug 4 is closed, the transmission medium in the high-pressure side open-valve driving chamber 303 is pressed to press the elastic plunger 6 in the connecting chamber 601, so that the other end of the elastic plunger 6 pressurizes the second valve plug/closing-valve driving chamber 501, so that the second valve plug 5 tends to close until the energy stored in the elastic plunger 6 and the energy stored in the open-valve driving chamber 302 and the second valve plug/closing-valve driving chamber 501 are released after the first valve plug 4 is closed, and self-aligned closing is achieved, and in the open state, the same elastic plunger 6 stores energy first, the high-pressure side open-valve driving chamber 303 pressurizes, the high-pressure side close-valve driving chamber 301 pressurizes, so that the first piston 41 moves to the left, and the first valve plug 4 opens.
Specifically, as shown in fig. 4 to 6, the arc plate 64 includes an arc wall 641, and the arc wall 641 has a connecting seam 642 on a side wall thereof, the connecting seam 642 corresponding to the position of the third connecting pipe 35, and a sealed transmission chamber 643 is formed between the arc wall 641 and the valve body 1.
When the transmission medium in the high-pressure side valve-opening driving chamber 303 is pressurized to the transmission chamber 643 between the arc-shaped plates 64 through the third connecting pipe 35 and the connecting seam 642, the first plug plate 61 is pressurized to move rightward, the spring 62 is compressed, then the second plug plate 63 moves rightward again, and the transmission medium is pressurized to the second valve-closing driving chamber 501, and the limiting ring 65 can limit the moving positions of the first plug plate 61 and the second plug plate 63, so that the first plug plate 61 or the second plug plate 63 is prevented from being excessively displaced.
Specifically, as shown in fig. 1, a bypass passage 104 is provided on the periphery of the valve seat 11 of the high-pressure side flow passage 101 of the valve body 1, the bypass passage 104 extends to the outside of the connection chamber 601 and communicates with the connection chamber 601 through a through hole 105, and the through hole 105 is located on the side of the retainer ring 65 close to the arc-shaped plate 64.
When the first piston 41 is being opened, i.e., the first and second plug plates 61 and 63 are moving from right to left, and the first plug plate 61 is located at the left side of the through hole 105, the high-pressure side medium enters between the first and second plug plates 61 and 63 from the through hole 105, and thus the high-pressure side opening valve driving chamber 303 is further pressurized.
Specifically, the through hole 105 is staggered from the connecting slit 642 in the circumferential direction of the arc-shaped wall surface 641.
In order to allow the through-hole 105 to be closed by the arc-shaped wall surface 641, the first stopper 61 is opened only when it is positioned on the left side of the through-hole 105.
Specifically, a handle 21 is arranged at one end of the driving rod 2, which is far away from the driving piston 22, the driving piston 22 comprises a threaded rod and a polished rod, the polished rod is rotatably connected with the threaded rod, the threaded rod is in threaded transmission with the valve body 1, and the polished rod is fixedly connected with the driving piston 22.
When the handle 21 is rotated, the threaded rod rotates relative to the valve body 1 and performs thread transmission, and during the transmission process, the threaded rod freely rotates relative to the polished rod and simultaneously drives the polished rod to move up and down, and the polished rod moves up and down and drives the driving piston 22 to move up and down.
The working principle is as follows: when the handle 21 is rotated, the threaded rod rotates relative to the valve body 1 and performs thread transmission, in the transmission process, the threaded rod freely rotates relative to the polished rod and simultaneously drives the polished rod to move up and down, the polished rod moves up and down to drive the driving piston 22 to move up and down, the high-pressure side flow passage 101 is positioned on one side of a high-pressure medium to prevent the high-pressure medium from overflowing from the valve body 1, the low-pressure side flow passage 102 is positioned on the discharge side, a fluid medium flows out from the valve port 103 between the high-pressure side flow passage 101 and the low-pressure side flow passage 102, a raised valve seat 11 is formed on the end surfaces of two sides of the valve port 103, the first valve plug 4 and the second valve plug 5 can be attached to the valve seat 11 to seal two sides of the valve port 103, so that after the valve is closed, the first valve plug 4 and the second valve plug 5 cannot be impacted by pressure, so that a large closing pressure is not needed to maintain, and the abrasion of the first valve plug 4 and the second valve plug 5 can be reduced, the first valve plug 4 and the second valve plug 5 are closed only by the driving of the driving rod 2, the high-pressure side closed valve driving cavity 301 has a dense transmission medium, such as a high-density gas or liquid, and the open valve driving cavity 302 has a density less than that of the transmission medium in the high-pressure side closed valve driving cavity 301, the transmission medium in the high-pressure side open valve driving cavity 303 is located between the high-pressure side closed valve driving cavity 301 and the open valve driving cavity 302, when the driving rod 2 drives the driving piston 22 to move between the high-pressure side closed valve driving cavity 301 and the open valve driving cavity 302, the transmission medium in the high-pressure side closed valve driving cavity 301 and the open valve driving cavity 302 will be compressed or stretched accordingly, in the closed valve state, as shown in fig. 1-3, when the driving piston 22 moves upwards, the transmission medium in the high-pressure side closed valve driving cavity 301 is compressed, because of its density is high, and the first valve plug 4 is in a compressed state, is easy to be closed, so the first valve plug 4 is closed firstly, then when the pressure applied to the second valve plug 5 disappears, the stretched transmission medium in the valve opening driving cavity 302 is recovered to close the second valve plug 5, because the transmission utilizes non-rigid transmission medium, has self-adaptive adjusting capability and keeps close tightly, when in the valve opening state, from the state of figures 3-4, when the driving piston 22 moves downwards, the transmission medium in the valve opening driving cavity 302 is compressed, and the pressure on the side of the second valve plug 5 is low, so the transmission medium in the valve closing driving cavity 301 on the high pressure side is stretched when the driving piston 22 on the side of figures 3-4 is applied with high pressure, at this time, the transmission medium in the valve closing driving cavity 501 on the second valve plug needs to be pressurized to the valve opening driving cavity 303 on the high pressure side, and the diameters of the valve opening driving cavity 302 and the driving cavity 301 on the high pressure side can be made small, in order to achieve a more labor-saving opening effect, by using the connecting cavity 601, when the first valve plug 4 is closed, the transmission medium in the high-pressure side open valve driving cavity 303 is squeezed to press the elastic plunger 6 in the connecting cavity 601, so that the other end of the elastic plunger 6 pressurizes the second valve plug closed valve driving cavity 501, so that the second valve plug 5 has a closing tendency, until the first valve plug 4 is closed, the energy stored in the elastic plunger 6 and the energy stored in the open valve driving cavity 302 and the second valve plug closed valve driving cavity 501 are released to achieve self-calibration closing, when in an opening state, the same elastic plunger 6 stores energy first, the high-pressure side open valve driving cavity 303 pressurizes, the high-pressure side closed valve driving cavity 301 is depressurized, so that the first piston 41 moves to the left, and the first valve plug 4 is opened.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a self-control self calibration prevents losing flexible two-way stop control valve which characterized in that: the valve comprises a valve body (1), wherein a high-pressure side flow channel (101) and a low-pressure side flow channel (102) are respectively arranged at two ends of the valve body (1), a valve port (103) is formed between the high-pressure side flow channel (101) and the low-pressure side flow channel (102), valve seats (11) are arranged at two sides of the valve port (103), a driving box (3) is arranged in the valve port (103), a first valve plug (4) and a second valve plug (5) for sealing the two valve seats (11) are respectively arranged at two ends of the driving box (3), and a driving rod (2) in transmission connection with the driving box (3) is arranged on the outer wall of the valve body (1);
a partition plate (31) and a flow plate (32) are arranged in the drive box (3), one end of the drive rod (2) is provided with a drive piston (22), the drive piston (22) is positioned in the drive box (3) and is attached to the inner wall of the drive box (3), a high-pressure side closed valve drive cavity (301) is formed in one side of the drive piston (22) in the drive box (3), an open valve drive cavity (302) is formed in the other side of the drive piston (22), and a high-pressure side open valve drive cavity (303) is formed in one side of the partition plate (31) away from the open valve drive cavity (302);
be equipped with connecting chamber (601) in valve body (1), elasticity plunger (6) sliding connection is in the inner wall of connecting chamber (601), elasticity plunger (6) are including first cock board (61), spring (62), second cock board (63), arc (64) and spacing ring (65), pass through between first cock board (61) and the second cock board (63) spring (62) elastic connection, arc (64) are located first cock board (61) are kept away from one side of spring (62), spacing ring (65) are located between first cock board (61) and the second cock board (63), and fix the inner wall of valve body (1).
2. The self-controlled self-calibrated anti-failure bidirectional stop control valve according to claim 1, characterized in that: the arc-shaped plate (64) comprises an arc-shaped wall surface (641), a connecting seam (642) is arranged on the side wall of the arc-shaped wall surface (641), the connecting seam (642) corresponds to the position of the third connecting pipe (35), and a sealed transmission chamber (643) is formed between the arc-shaped wall surface (641) and the valve body (1).
3. The self-controlled self-calibrated anti-failure bidirectional stop control valve according to claim 2, characterized in that: the high-pressure side runner (101) of the valve body (1) is provided with a bypass channel (104) on the periphery of a valve seat (11), the bypass channel (104) extends to the outer side of the connecting cavity (601) and is communicated with the connecting cavity (601) through a through hole (105), and the through hole (105) is located on one side, close to the arc-shaped plate (64), of the limiting ring (65).
4. The self-controlled self-calibrated anti-failure bidirectional stop control valve according to claim 3, characterized in that: the through hole (105) is staggered with the connecting seam (642) in the circumferential direction of the arc-shaped wall surface (641).
5. The self-controlled self-calibrated anti-failure bidirectional stop control valve according to claim 1, characterized in that: keep away from in actuating lever (2) the one end of drive piston (22) is equipped with handle (21), drive piston (22) are including threaded rod and polished rod, polished rod and threaded rod rotate to be connected, the threaded rod with valve body (1) screw thread transmission, the polished rod with drive piston (22) fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432802.XA CN113236793A (en) | 2020-07-27 | 2020-07-27 | Self-control self-calibration anti-failure bidirectional stop control valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432802.XA CN113236793A (en) | 2020-07-27 | 2020-07-27 | Self-control self-calibration anti-failure bidirectional stop control valve |
| CN202010731061.0A CN111946835B (en) | 2020-07-27 | 2020-07-27 | Self-control self-calibration anti-failure bidirectional stop control valve |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010731061.0A Division CN111946835B (en) | 2020-07-27 | 2020-07-27 | Self-control self-calibration anti-failure bidirectional stop control valve |
Publications (1)
| Publication Number | Publication Date |
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| CN113236793A true CN113236793A (en) | 2021-08-10 |
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| CN202010731061.0A Expired - Fee Related CN111946835B (en) | 2020-07-27 | 2020-07-27 | Self-control self-calibration anti-failure bidirectional stop control valve |
| CN202110432802.XA Pending CN113236793A (en) | 2020-07-27 | 2020-07-27 | Self-control self-calibration anti-failure bidirectional stop control valve |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010731061.0A Expired - Fee Related CN111946835B (en) | 2020-07-27 | 2020-07-27 | Self-control self-calibration anti-failure bidirectional stop control valve |
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| CN210088010U (en) * | 2019-07-15 | 2020-02-18 | 自贡自高阀门有限公司 | Novel axial-flow type stop valve |
| CN210422918U (en) * | 2019-07-08 | 2020-04-28 | 李瑞杰 | Fluid supercharging device with good stability |
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| CN2886269Y (en) * | 2006-01-25 | 2007-04-04 | 周华松 | Hidden type automatic lifting faucet |
| EP2781813A1 (en) * | 2013-03-21 | 2014-09-24 | VAT Holding AG | Vacuum valve |
| CN203823162U (en) * | 2014-01-27 | 2014-09-10 | 干平 | Pneumatic valve |
| CN206770309U (en) * | 2017-04-11 | 2017-12-19 | 杭州欧盾机电有限公司 | Hydraulic means and the bending straightener with hydraulic means |
| CN208010997U (en) * | 2018-03-02 | 2018-10-26 | 国家能源投资集团有限责任公司 | Self-balancing regulating valve and pipeline pressure balance system with it |
| CN108331926A (en) * | 2018-03-27 | 2018-07-27 | 胜利阀门有限公司 | A kind of double sealing piston formula the needle valve |
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- 2020-07-27 CN CN202010731061.0A patent/CN111946835B/en not_active Expired - Fee Related
- 2020-07-27 CN CN202110432802.XA patent/CN113236793A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1136093A (en) * | 1965-07-08 | 1968-12-11 | Rotax Ltd | Fluid control valves |
| KR20100049711A (en) * | 2008-10-30 | 2010-05-13 | 주식회사 신정기공 | Butterfly type regulating flow rate and check valve |
| CN205506270U (en) * | 2016-04-25 | 2016-08-24 | 中国石油天然气股份有限公司 | Anti -freezing device of pressure gauge |
| CN207005320U (en) * | 2017-07-20 | 2018-02-13 | 四川云一达科技有限公司 | The control valve of built-in gas pressure sensor |
| CN207390923U (en) * | 2017-10-27 | 2018-05-22 | 龙岩市鑫鼎力液压机械有限公司 | A kind of hydraulic system |
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| CN210422918U (en) * | 2019-07-08 | 2020-04-28 | 李瑞杰 | Fluid supercharging device with good stability |
| CN210088010U (en) * | 2019-07-15 | 2020-02-18 | 自贡自高阀门有限公司 | Novel axial-flow type stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111946835B (en) | 2021-05-21 |
| CN111946835A (en) | 2020-11-17 |
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