CN114484053B - Control system of pneumatic stop valve - Google Patents
Control system of pneumatic stop valve Download PDFInfo
- Publication number
- CN114484053B CN114484053B CN202210090819.6A CN202210090819A CN114484053B CN 114484053 B CN114484053 B CN 114484053B CN 202210090819 A CN202210090819 A CN 202210090819A CN 114484053 B CN114484053 B CN 114484053B
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- auxiliary
- valve
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- cylinder body
- piston
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Classifications
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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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
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
Abstract
The invention discloses a control system of a pneumatic stop valve, which relates to the field of valves and comprises a main valve body, a main cylinder body arranged above the main valve body, an auxiliary cylinder body arranged above the main cylinder body and an auxiliary valve body connected with the main cylinder body and the auxiliary cylinder body, wherein a main cylinder cover and a main piston are arranged in the main cylinder body, an auxiliary cylinder cover and an auxiliary piston are arranged in the auxiliary cylinder body, a first channel for communicating the main cylinder cover and the auxiliary valve body is arranged between the main cylinder cover and the auxiliary valve body, the auxiliary piston is provided with an auxiliary valve rod which extends downwards out of the auxiliary cylinder body and is inserted into the auxiliary valve body, the bottom end of the auxiliary valve rod is provided with an auxiliary valve clack, and the auxiliary valve clack is provided with two actions for blocking the first channel and opening the first channel when driven by the auxiliary piston to move up and down. The invention has the advantages of quick opening and good working stability.
Description
Technical Field
The invention relates to the field of valves, in particular to a control system of a pneumatic stop valve.
Background
The three-super pneumatic stop valve is an ultrahigh temperature (2000 ℃), ultrahigh pressure (45 MPa) and ultrahigh speed opening (20 ms); the control system of the existing pneumatic stop valve can not meet the requirement of ultrahigh-speed opening and can not achieve the functions required by production.
Disclosure of Invention
In order to overcome the defects of the background technology, the invention provides a control system of a pneumatic stop valve, which is quick to open and good in working stability.
The invention adopts the technical scheme that: the utility model provides a control system of pneumatic stop valve, its includes the main valve body, installs the main cylinder body in main valve body top, installs the auxiliary cylinder body in main cylinder body top and connects the auxiliary valve body of main cylinder body and auxiliary cylinder body, be equipped with main cylinder cap and master piston in the main cylinder body, be equipped with auxiliary cylinder cap and auxiliary piston in the auxiliary cylinder body, be equipped with the first passageway of the two of intercommunication between main cylinder cap and the auxiliary valve body, the auxiliary piston is equipped with the auxiliary valve rod that stretches out auxiliary cylinder body and insert in the auxiliary valve body downwards, the auxiliary valve rod bottom is equipped with the auxiliary valve clack, the auxiliary valve clack has two actions of shutoff first passageway and opening first passageway when being driven up-and-down motion by auxiliary piston.
The auxiliary valve body is provided with a main inlet pipe for a power source to enter at a position corresponding to the side wall of the first channel, and a pneumatic ball valve is arranged on the main inlet pipe;
a plurality of quick-release valves are arranged above the auxiliary cylinder cover, an auxiliary inlet pipe for a power source to enter is arranged on the quick-release valves, and an electromagnetic valve and a filter are arranged on the auxiliary inlet pipe.
The main cylinder is internally provided with a hydraulic buffer mechanism, and the auxiliary cylinder is internally provided with a throttling buffer mechanism.
The hydraulic buffer mechanism includes:
the box body is fixedly arranged at one side of the main cylinder cover and stores liquid medium;
a first flow passage provided on the case;
a second flow passage provided on the master cylinder cover and communicating with the first flow passage;
an annular cavity communicated with the second flow passage is arranged between the outer circle of the lower part of the main cylinder cover and the side wall of the main cylinder body, and an annular boss which is inserted into the annular cavity and is in sealing sliding fit is arranged on the outer circumference of the main piston.
The box body is internally provided with a box cover, an adjusting piston in sealing sliding fit with the inner wall of the box body and an adjusting rod fixedly connected with the adjusting piston and in threaded fit with the box cover.
The lower surface of the main cylinder cover is provided with a plurality of first elastic pieces, and the lower surface of the main piston is provided with a plurality of first energy storage pieces.
The throttle buffer mechanism adopts the damping piece of installing at the auxiliary valve rod up end, auxiliary valve rod upper end passes through lock nut and installs in auxiliary piston center department, auxiliary cylinder cap center department is equipped with quick exhaust valve intercommunication and with the second passageway that damping piece corresponds, the external diameter size of damping piece lower extreme with the aperture size adaptation of second passageway and the external diameter size of upper end are less than the aperture size of second passageway.
The auxiliary cylinder cover is characterized in that a plurality of second elastic pieces are arranged on the lower surface of the auxiliary cylinder cover, and a plurality of second energy storage pieces are arranged on the lower surface of the auxiliary piston.
The pneumatic ball valve includes the ball valve body and installs the actuating mechanism in ball valve body upper end, actuating mechanism includes:
the shell is fixedly arranged at the upper end of the ball valve body, and cover plates are arranged at two ends of the shell;
the rotating shaft is rotatably arranged at the center of the shell and is in linkage connection with the ball valve body;
the first sliding seat and the second sliding seat are installed in the shell in a sliding manner and are respectively positioned at two sides of the rotating shaft;
the novel rotary shaft sliding device comprises a first sliding seat, a second sliding seat, a cover plate, a first elastic piece, a second elastic piece, a rotating shaft, a first sliding seat and a second sliding seat, wherein three containing cavities are formed between the first sliding seat and the cover plate, between the second sliding seat and the cover plate and between the first sliding seat and the second sliding seat, air holes are formed in the side wall of the shell at positions corresponding to the three containing cavities, third elastic pieces which are in interference are respectively arranged between the first sliding seat and the cover plate and between the second sliding seat and the cover plate, and the first sliding seat and the second sliding seat are respectively engaged with the rotating shaft.
The beneficial effects of the invention are as follows: according to the technical scheme, the control system is designed into the main cylinder body and the auxiliary cylinder body, the on-off of high-temperature high-pressure gas in the main valve body is controlled through the main piston in the main cylinder body, the auxiliary piston of the auxiliary cylinder body drives the auxiliary valve clack to move up and down to realize the exhaust work of the main cylinder body, when the auxiliary valve clack plugs the first channel, the main cylinder body can charge a high-pressure gas source from the first channel, the main piston moves fast downwards, and when the auxiliary valve clack opens the first channel, the gas of the main cylinder body can be discharged from the first channel and the auxiliary valve body fast, so that the main valve has the advantages of fast opening and good working stability.
Drawings
Fig. 1 is a schematic structural diagram of a control system of a pneumatic cut-off valve according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of the driving mechanism.
Fig. 3 is a partial enlarged view at a in fig. 1.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
as shown in the figure, a control system of a pneumatic stop valve comprises a main valve body 1, a main cylinder body 2 arranged above the main valve body 1, an auxiliary cylinder body 3 arranged above the main cylinder body 2 and an auxiliary valve body 4 connected with the main cylinder body 2 and the auxiliary cylinder body 3, wherein a main cylinder cover 21 and a main piston 22 are arranged in the main cylinder body 2, an auxiliary cylinder cover 31 and an auxiliary piston 32 are arranged in the auxiliary cylinder body 3, a first channel 5 for communicating the main cylinder cover 21 and the auxiliary valve body 4 is arranged between the main cylinder cover 21 and the auxiliary valve body 4, the auxiliary piston 32 is provided with an auxiliary valve rod 33 which extends downwards out of the auxiliary cylinder body 3 and is inserted into the auxiliary valve body 4, the bottom end of the auxiliary valve rod 33 is provided with an auxiliary valve clack 34, and the auxiliary valve clack 34 is provided with two actions of blocking the first channel 5 and opening the first channel 5 when being driven by the auxiliary piston 32 to move up and down; according to the technical scheme, the control system is designed into the main cylinder body and the auxiliary cylinder body, the on-off of high-temperature high-pressure gas in the main valve body is controlled through the main piston in the main cylinder body, the auxiliary piston of the auxiliary cylinder body drives the auxiliary valve clack to move up and down to realize the exhaust work of the main cylinder body, when the auxiliary valve clack plugs the first channel, the main cylinder body can charge a high-pressure gas source from the first channel, the main piston moves fast downwards, and when the auxiliary valve clack opens the first channel, the gas of the main cylinder body can be discharged from the first channel and the auxiliary valve body fast, so that the main valve has the advantages of fast opening and good working stability.
The auxiliary valve body 4 is provided with a main inlet pipe 23 for a power source to enter at a position corresponding to the side wall of the first channel 5, and a pneumatic ball valve 6 is arranged on the main inlet pipe 23;
a plurality of quick-release valves 35 are arranged above the auxiliary cylinder cover 31, an auxiliary inlet pipe 36 for a power source to enter is arranged on the quick-release valves 35, and an electromagnetic valve 37 and a filter 38 are arranged on the auxiliary inlet pipe 36.
The control system of the technical scheme is designed into a main cylinder body and an auxiliary cylinder body, and the following 6 conditions are satisfied: 1. the acting force of the valve rod of the main valve body needs to meet the requirement of closing and sealing the valve clack; 2, the acting force of a main piston pushing the valve rod of the main valve body is more than or equal to the output force of the valve rod of the main valve body; 3, the control valve of the main cylinder pressure can adapt to the requirement of the air source pressure; 4, the quick exhaust time of the main cylinder body is less than or equal to 20ms;5, the piston acting force of the auxiliary cylinder body meets the sealing requirement of the auxiliary valve clack; the exhaust time of the 6-auxiliary cylinder body is required to be less than or equal to 15ms.
To meet clauses 1 and 2, the force of the master piston against the valve stem must overcome four forces: 1 acting force of a high-pressure medium on the valve clack; 2 sealing force between the valve clack and the valve seat; 3 friction force of the valve rod filler part; and 4, friction force of a rubber sealing ring in the cylinder.
Scheme A: by calculation, the force must be equal to or greater than 260000N; the maximum working pressure of the reversing valve controlled by the gas circuit, such as two-position three-way, three-position four-way and other electromagnetic valves, is only 1MPa, if the main cylinder body adopts 1MPa pressure and generates 260000N thrust, the inner diameter of the main cylinder body is more than or equal to ∅ mm, and when the valve is opened, all the gases are discharged within 20ms; otherwise there is back pressure in the master cylinder, the piston stroke is blocked and it is not possible to move quickly, and therefore this solution is not feasible.
And B, the main cylinder body adopts a 13MPa high-pressure air source, an electromagnetic reversing valve of the high-pressure air source cannot be solved, and a high-pressure quick pneumatic ball valve for a process pipeline is designed and selected, so that the quick closing time is 20ms. The pressure in the main cylinder body is 13MPa, the piston stroke is 50mm, and the inner diameter of the main cylinder body is ∅. The auxiliary valve clack is opened by the auxiliary cylinder body when the main cylinder body is rapidly exhausted, and the gas of the main cylinder body can be exhausted within 11ms through the first channel diameter ∅ of the main cylinder body;
the auxiliary valve clack is sealed by the auxiliary cylinder body to provide pressure, the air source pressure of the auxiliary cylinder body is 0.8MPa, and the air path reversing action can be realized by adopting a common two-position three-way electromagnetic valve. The sealing force of the auxiliary valve clack is 31000N, the cylinder inner diameter is ∅ and 225, the thrust generated by the cylinder piston rod is 39250N, and the thrust is larger than 31000N, so that the valve can be sealed. The auxiliary cylinder piston stroke is 12mm, the quick exhaust self-control two quick exhaust valves with the caliber of 1.5, and the gas of the auxiliary cylinder can be exhausted in 13 ms.
The starting of the main piston is based on the medium acting force of 8 first energy storage pieces 25 and 47MPa installed below the main cylinder, the starting of the auxiliary cylinder piston is based on the gas pressure of 8 second energy storage pieces 311 installed below the auxiliary cylinder and 13MPa of the main cylinder below the auxiliary valve clack, and the first energy storage pieces 25 and the second energy storage pieces 311 are both energy storage springs.
From the above, the ultra-fast opening action of the three-ultra stop valve adopting the scheme B can be realized.
A hydraulic buffer mechanism 7 is arranged in the main cylinder body 2, and a throttle buffer mechanism is arranged in the auxiliary cylinder body 3; the rapid movement of the piston in the cylinder inevitably generates impact on the upper cylinder seat to cause system vibration and potential safety hazard, so that two different buffer mechanisms are designed for the main cylinder body and the auxiliary cylinder body; the main cylinder body is provided with a hydraulic buffer mechanism and a spring damper; the auxiliary cylinder body is provided with a throttling buffer mechanism and a spring damper.
The hydraulic buffer mechanism 7 includes:
a case 71 fixedly provided on one side of the main cylinder head 21 and storing a liquid medium;
a first flow passage 72 provided on the casing 71;
a second flow passage 73 provided on the main head 21 and communicating with the first flow passage 72;
an annular chamber 74 communicated with the second flow channel 73 is arranged between the lower outer circle of the main cylinder cover 21 and the side wall of the main cylinder body 2, and an annular boss 75 which is inserted into the annular chamber 74 and is in sealing sliding fit is arranged on the outer circumference of the main piston 22. The gas is a compressible substance, which can reduce in volume with increasing pressure; the liquid is an incompressible substance that changes shape only with the container and does not change volume. According to the characteristic of the liquid, a hydraulic buffer mechanism is designed in the main cylinder body, and hydraulic light engine oil is injected into the annular cavity; when the main piston rises, engine oil in the annular cavity is pressed into the box body, and when the box body is filled, the main piston is blocked by the engine oil and cannot rise, so that damping is generated.
The box 71 is internally provided with a box cover 76, an adjusting piston 77 in sealing sliding fit with the inner wall of the box 71 and an adjusting rod 78 fixedly connected with the adjusting piston and in threaded fit with the box cover, so that the height of the adjusting piston can be controlled, and the quantity of engine oil entering the box and the moving stroke of the main piston are controlled.
The lower surface of the main cylinder cover 21 is provided with a plurality of first elastic pieces 24, when the main piston rises a certain distance, the first elastic pieces are compressed to generate a buffering effect, and the first elastic pieces adopt damping springs.
The throttle buffer mechanism adopts a damping block 8 arranged on the upper end surface of an auxiliary valve rod 33, the upper end of the auxiliary valve rod 33 is arranged at the center of an auxiliary piston 32 through a lock nut, a second channel 39 which is communicated with a quick-release valve 35 and corresponds to the damping block 8 is arranged at the center of an auxiliary cylinder cover 31, the outer diameter size of the lower end of the damping block 8 is matched with the aperture size of the second channel 39, and the outer diameter size of the upper end of the damping block is smaller than the aperture size of the second channel 39; when the damping block enters the second channel, the second channel gradually decreases until the second channel is blocked, and the resistance in the process gradually increases along with the decrease of the second channel.
The lower surface of the auxiliary cylinder cover 31 is provided with a plurality of second elastic members 310, and when the auxiliary piston rises a certain distance, the second elastic members are compressed to generate a buffering effect, and the second elastic members adopt damping springs.
The pneumatic ball valve 6 comprises a ball valve body 61 and a driving mechanism arranged at the upper end of the ball valve body, and the driving mechanism comprises:
a housing 62 fixedly installed at an upper end of the ball valve body 61 and having cover plates 63 at both ends;
a rotation shaft 64 rotatably installed at the center of the housing 62 and coupled to the ball valve body 61;
a first sliding seat 65 and a second sliding seat 66 which are slidably installed in the housing 62 and are respectively positioned at two sides of the rotating shaft 64;
three cavities are formed between the first sliding seat 65 and the cover plate 63, between the second sliding seat 66 and the cover plate 63 and between the first sliding seat 65 and the second sliding seat 66, air holes 67 are formed in the side wall of the shell 62 at positions corresponding to the three cavities, third elastic pieces 68 which are in contact with the first sliding seat 65 and the cover plate and between the second sliding seat 66 and the cover plate are respectively arranged between the first sliding seat 65 and the cover plate, the first sliding seat 65 and the second sliding seat 66 are respectively meshed and matched with the rotating shaft 64, and the pneumatic ball valve can meet the product requirement of quick closing time 20ms;
the first sliding seat and the second sliding seat can be realized by exhausting to the three cavities respectively through the air holes, and the first sliding seat 65 and the second sliding seat 66 can be meshed and matched to drive the rotating shaft to rotate, so that the on-off of the ball valve body is realized.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.
Claims (8)
1. A control system for a pneumatic shut-off valve, characterized by: the auxiliary valve comprises a main valve body (1), a main cylinder body (2) arranged above the main valve body (1), an auxiliary cylinder body (3) arranged above the main cylinder body (2) and an auxiliary valve body (4) connected with the main cylinder body (2) and the auxiliary cylinder body (3), wherein a main cylinder cover (21) and a main piston (22) are arranged in the main cylinder body (2), an auxiliary cylinder cover (31) and an auxiliary piston (32) are arranged in the auxiliary cylinder body (3), a first channel (5) communicated with the main cylinder cover (21) and the auxiliary valve body (4) is arranged between the main cylinder cover (21) and the auxiliary valve body (4), an auxiliary valve rod (33) extending downwards out of the auxiliary cylinder body (3) and inserted into the auxiliary valve body (4) is arranged at the bottom end of the auxiliary valve rod (33), and the auxiliary valve rod (34) is provided with two actions of blocking the first channel (5) and opening the first channel (5) when being driven to move up and down by the auxiliary piston (32).
Also comprises a hydraulic buffer mechanism (7), wherein the hydraulic buffer mechanism (7) comprises: a tank (71) fixedly provided on one side of the main cylinder head (21) and storing a liquid medium; a first flow passage (72) provided in the case (71); a second flow passage (73) provided on the main head (21) and communicating with the first flow passage (72); an annular cavity (74) communicated with the second flow channel (73) is arranged between the outer circle of the lower part of the main cylinder cover (21) and the side wall of the main cylinder body (2), and an annular boss (75) which is inserted into the annular cavity (74) and in sealing sliding fit is arranged on the outer circumference of the main piston (22).
2. The control system of a pneumatic shut-off valve as set forth in claim 1, wherein: a main inlet pipe (23) for a power source to enter is arranged at a position corresponding to the side wall of the first channel (5) of the auxiliary valve body (4), and a pneumatic ball valve (6) is arranged on the main inlet pipe (23); a plurality of quick-discharge valves (35) are arranged above the auxiliary cylinder cover (31), an auxiliary inlet pipe (36) for a power source to enter is arranged on the quick-discharge valves (35), and an electromagnetic valve (37) and a filter (38) are arranged on the auxiliary inlet pipe (36).
3. The control system of a pneumatic shut-off valve as set forth in claim 1, wherein: a throttle buffer mechanism is arranged in the auxiliary cylinder body (3).
4. The control system of a pneumatic shut-off valve as set forth in claim 1, wherein: the box body (71) is internally provided with a box cover (76), an adjusting piston (77) in sealing sliding fit with the inner wall of the box body (71) and an adjusting rod (78) fixedly connected with the adjusting piston and in threaded fit with the box cover.
5. A control system for a pneumatic shut-off valve as in claim 3, wherein: the lower surface of the main cylinder cover (21) is provided with a plurality of first elastic pieces (24), and the lower surface of the main piston (22) is provided with a plurality of first energy storage pieces (25).
6. A control system for a pneumatic shut-off valve as in claim 3, wherein: the throttle buffer mechanism adopts damping block (8) of installing at auxiliary valve rod (33) up end, auxiliary valve rod (33) upper end passes through lock nut and installs in auxiliary piston (32) center department, auxiliary cylinder cap (31) center department is equipped with quick exhaust valve (35) intercommunication and with damping block (8) corresponding second passageway (39), damping block (8) lower extreme external diameter size with the aperture size adaptation of second passageway (39) and the external diameter size of upper end is less than the aperture size of second passageway (39).
7. A control system for a pneumatic shut-off valve as in claim 3, wherein: the lower surface of the auxiliary cylinder cover (31) is provided with a plurality of second elastic pieces (310), and the lower surface of the auxiliary piston (32) is provided with a plurality of second energy storage pieces (311).
8. The control system of a pneumatic shut-off valve according to claim 2, characterized in that: the pneumatic ball valve (6) comprises a ball valve body (61) and a driving mechanism arranged at the upper end of the ball valve body, and the driving mechanism comprises: a shell (62) fixedly arranged at the upper end of the ball valve body (61) and provided with cover plates (63) at two ends; a rotation shaft (64) rotatably installed at the center of the housing (62) and coupled to the ball valve body (61); a first sliding seat (65) and a second sliding seat (66), which are slidably installed in the housing (62) and are respectively positioned at two sides of the rotating shaft (64); the novel sliding seat comprises a first sliding seat (65) and a cover plate (63), a second sliding seat (66) and the cover plate (63) and three accommodating cavities are formed between the first sliding seat (65) and the second sliding seat (66), air holes (67) are formed in the side wall of a shell (62) at positions corresponding to the three accommodating cavities, third elastic pieces (68) which are in interference with each other are arranged between the first sliding seat (65) and the cover plate and between the second sliding seat (66) and the cover plate respectively, and the first sliding seat (65) and the second sliding seat (66) are in meshed fit with a rotating shaft (64) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210090819.6A CN114484053B (en) | 2022-01-26 | 2022-01-26 | Control system of pneumatic stop valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210090819.6A CN114484053B (en) | 2022-01-26 | 2022-01-26 | Control system of pneumatic stop valve |
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| Publication Number | Publication Date |
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| CN114484053A CN114484053A (en) | 2022-05-13 |
| CN114484053B true CN114484053B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210090819.6A Active CN114484053B (en) | 2022-01-26 | 2022-01-26 | Control system of pneumatic stop valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117028649B (en) * | 2023-10-09 | 2023-12-05 | 常州耐普德新能源科技有限公司 | Pneumatic actuator for valve and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172466A (en) * | 1977-07-01 | 1979-10-30 | Target Rock Corporation | Self-actuated pilot-controlled safety valve |
| CN2440996Y (en) * | 2000-08-23 | 2001-08-01 | 章祖翼 | Partly sustained pneumatic device for rotary valve |
| CN102147028A (en) * | 2011-04-15 | 2011-08-10 | 王元清 | Low-pressure pilot operated safety valve |
| CN207421373U (en) * | 2017-11-13 | 2018-05-29 | 成都华科阀门制造有限公司 | A kind of axial-flow type quick valve applied to impulse wind tunnel |
| CN108571606A (en) * | 2018-06-14 | 2018-09-25 | 青岛精锐机械制造有限公司 | A kind of gas control angle pedestal valve of smaller gas control power |
| CN113251201A (en) * | 2021-05-07 | 2021-08-13 | 浙江石化阀门有限公司 | High-temperature pneumatic quick-opening stop valve |
-
2022
- 2022-01-26 CN CN202210090819.6A patent/CN114484053B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172466A (en) * | 1977-07-01 | 1979-10-30 | Target Rock Corporation | Self-actuated pilot-controlled safety valve |
| CN2440996Y (en) * | 2000-08-23 | 2001-08-01 | 章祖翼 | Partly sustained pneumatic device for rotary valve |
| CN102147028A (en) * | 2011-04-15 | 2011-08-10 | 王元清 | Low-pressure pilot operated safety valve |
| CN207421373U (en) * | 2017-11-13 | 2018-05-29 | 成都华科阀门制造有限公司 | A kind of axial-flow type quick valve applied to impulse wind tunnel |
| CN108571606A (en) * | 2018-06-14 | 2018-09-25 | 青岛精锐机械制造有限公司 | A kind of gas control angle pedestal valve of smaller gas control power |
| CN113251201A (en) * | 2021-05-07 | 2021-08-13 | 浙江石化阀门有限公司 | High-temperature pneumatic quick-opening stop valve |
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| CN114484053A (en) | 2022-05-13 |
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