CN109058565B - Quick valve with no-load balancing function - Google Patents
Quick valve with no-load balancing function Download PDFInfo
- Publication number
- CN109058565B CN109058565B CN201811304961.6A CN201811304961A CN109058565B CN 109058565 B CN109058565 B CN 109058565B CN 201811304961 A CN201811304961 A CN 201811304961A CN 109058565 B CN109058565 B CN 109058565B
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- Prior art keywords
- valve
- piston
- cavity
- valve body
- balance
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- 238000007789 sealing Methods 0.000 claims abstract description 60
- 239000003921 oil Substances 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
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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
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a quick valve with an empty load balancing function, which comprises a valve seat, a valve body and a valve cover, wherein the valve seat and the valve cover are respectively positioned at two ends of the valve body, a medium inlet is arranged in the valve seat, a valve cavity is arranged in the valve body, a medium outlet is arranged in the valve cover, the medium inlet and the medium outlet are both communicated with the valve cavity, a piston matched with the valve cavity is arranged in the valve cavity of the valve body, a sealing cavity is formed between the valve bodies of the pistons, a valve core matched with the valve seat is arranged on the piston, and the valve core can seal the valve seat; the balance piston can move towards the piston direction, a second channel is further arranged on the valve body, two ends of the second channel are respectively communicated with the sealing cavity and the balance cavity, a first channel is further arranged on the valve seat, and two ends of the first channel are respectively communicated with the balance cavity and the medium inlet. The invention can ensure that the sealing specific pressure between the valve core and the valve seat is in a proper value, and avoid the damage between the valve core and the valve seat.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a quick valve with an idle load balancing function.
Background
In hypersonic wind tunnels, a fast opening valve is required for the start of the tunnel, the pressure of the valve is typically between 3MPa and 22.0MPa, and the pressure varies with the mach number of the test. The valve core is arranged on the piston, and the valve core is pushed to move towards the valve seat by sealing gas to realize sealing; when the valve is required to be opened, sealing gas acting on the end part of the piston is released, the sealed high-pressure gas pushes the valve core to move towards the opening valve box to realize the rapid opening of the valve, the higher the pressure of the sealed gas is, the faster the valve is opened, the higher the pressure of the sealed gas is, the higher the pressure of the required sealing gas is, the higher the pressure of the sealing gas received by the valve core is, the higher the sealing specific pressure between the valve seat and the valve core is, and even the valve core and the valve seat are damaged due to exceeding the allowable specific pressure of materials, so that a rapid valve for coordinating the sealing specific pressure of the valve seat under the no-load and load state in a high-pressure environment is needed.
Disclosure of Invention
The invention aims to provide a quick valve with an empty load balancing function, which can reduce the sealing specific pressure between valve seats and valve seats while ensuring the air tightness between the valve seats, thereby avoiding the damage of the valve seats and the valve seats.
The invention is realized by the following technical scheme:
the quick valve with the no-load balancing function comprises a valve seat, a valve body and a valve cover, wherein the valve seat and the valve cover are respectively positioned at two ends of the valve body, a medium inlet is arranged in the valve seat, a valve cavity is arranged in the valve body, a medium outlet is arranged in the valve cover, the medium inlet and the medium outlet are both communicated with the valve cavity, a piston matched with the valve cavity is arranged in the valve cavity of the valve body, a sealing cavity is formed between the valve bodies of the pistons, the sealing cavity is close to the valve cover, a valve core matched with the valve seat is arranged on the piston, and the valve core can seal the valve seat; the balance piston is arranged in the balance cavity and can move towards the piston direction, a second channel is further arranged on the valve body, two ends of the second channel are respectively communicated with the seal cavity and the balance cavity, a first channel is further arranged on the valve seat, and two ends of the first channel are respectively communicated with the balance cavity and the medium inlet.
Further, the balance piston divides the balance chamber into a balance chamber a and a balance chamber B, the balance chamber a being connected with the second passage, the balance chamber B being connected with the first passage.
Further, the valve body is also provided with a sealing air inlet and a sealing air outlet, and the sealing air inlet and the sealing air outlet are communicated with the sealing cavity.
Further, a buffer cavity is formed between the valve body and the valve cover, the piston is positioned in the buffer cavity, and a first sealing ring is arranged between the valve body and the valve cover and between the valve body and the piston.
Further, a buffer oil cylinder is further arranged on the valve body, and the buffer oil cylinder is communicated with the buffer cavity.
Further, a second sealing ring is arranged between the valve body, the valve seat and the balance piston.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the quick valve with the no-load balancing function, when no load exists, as the balancing cavity A is connected with the sealing cavity, when the sealing gas pushes the valve core piston to approach the valve seat, the balancing piston also approaches the valve core piston, when the valve core contacts and seals with the valve seat, the balancing piston also contacts with the valve core piston and exerts reverse thrust force on the valve core piston so as to reduce the sealing force acting on the valve core, and therefore the sealing specific pressure between the valve core and the valve seat is at a proper value;
2. according to the quick valve with the no-load balancing function, when a medium is sealed, the sealed medium enters the balancing cavity B from the medium inlet of the valve seat, the medium entering the balancing cavity B can apply acting force to the balancing piston, the balancing piston can apply acting force to sealing gas in the balancing cavity A, and the sealing gas in the balancing cavity A can generate acting force to the piston due to the fact that the balancing cavity A is communicated with the sealing cavity through the second channel, and sealing performance between the valve core and the valve seat is further guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the portion A of the present invention
In the drawings, the reference numerals and corresponding part names:
1-valve seat, 2-valve core, 3-piston, 4-valve body, 5-buffer cylinder, 6-buffer cavity, 7-valve cover, 8-sealed gas inlet and outlet, 9-sealed cavity, 10-first channel, 11-balance piston, 12-balance cavity A, 13-balance cavity B, 14-second channel, 15-medium inlet and 16-medium outlet.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Examples
As shown in fig. 1 to 2, the quick valve with the no-load balancing function comprises a valve seat 1, a valve body 4 and a valve cover 7, wherein a medium inlet 15 is arranged in the valve seat 1, a valve cavity is arranged in the valve body 4, a medium outlet 16 is arranged in the valve cover 7, the valve seat 1 and the valve cover 7 are respectively positioned at two ends of the valve body 4, and the valve cavity is communicated with the medium inlet 15 and the medium outlet 16; a piston 3 matched with the valve cavity is arranged in the valve cavity of the valve body 4, the piston 3 and the valve body 4 are sealed through an O-shaped sealing ring, certain air tightness is ensured between the piston 3 and the valve body 4 when the piston 3 moves in the valve body 4, a sealing cavity 9 is formed between the piston 3 and the valve body 4, the sealing cavity 9 is close to a valve cover 7, a sealing air inlet and outlet 8 is further arranged on the valve body 4, the sealing air inlet and outlet 8 is communicated with the sealing cavity 9, so that sealing air can enter the sealing cavity 9 through the sealing air inlet and outlet 8, and the sealing air is utilized to push the piston 3 to move towards the valve seat 1; the piston 3 is provided with a valve core 2, the valve core 2 is connected with the piston 3 through a bolt, the valve core 2 faces the direction of the valve seat 1, the inner side of the valve seat 1 is provided with a conical hole matched with the valve core 2, and when the piston 3 drives the valve core 2 to move towards the direction of the valve seat 1, the spherical surface of the valve core 2 can be attached to the conical surface of the valve body 1, so that the valve seat 1 is sealed; a balance cavity is formed between the valve seat 1 and the valve body 4, a balance piston 11 is arranged in the balance cavity, the balance piston 11 is sleeved on the valve seat 1, the balance piston 11 can move towards the direction of the piston 3 in the balance cavity, a second sealing ring is arranged between the balance piston 11 and the valve body 4 and is an O-shaped sealing ring, and a second sealing ring is also arranged between the balance piston 11 and the valve seat 1 and is an O-shaped sealing ring, so that the air tightness between the balance piston 11 and the valve body 4 and the valve seat 1 can be ensured when the balance piston 11 moves in the balance cavity; the balance piston 3 divides the balance cavity into a balance cavity A and a balance cavity B, the balance cavity A is positioned at the outer side of the balance piston 11, the balance cavity B is positioned at the inner side of the balance piston 11, a second channel 14 is further arranged in the inner wall of the valve body 4, one end of the second channel 14 is communicated with the balance cavity A, the other end of the second channel is communicated with the seal cavity 9, so that seal gas entering from the seal gas inlet and outlet 8 can enter the balance cavity A through the second channel 14, and the balance piston 3 is forced to move towards the piston 3; the inner wall of the valve body 1 is also provided with a first channel 10, one end of the first channel 10 is communicated with a medium inlet 15, and the other end of the first channel is communicated with a balance cavity B, so that a medium in the medium inlet 15 can enter the balance cavity B through the first channel 10, and acting force is generated on a balance piston 11 in the balance cavity to partially or completely offset the force from the balance cavity A; the valve body 4 and the valve cover 7 form a buffer cavity 6, the piston 3 is positioned in the buffer cavity 6, the valve body 4 is also provided with a buffer oil cylinder 5, the buffer oil cylinder 5 is communicated with the buffer cavity 6, when the valve is opened, the piston 3 drives the valve core 2 to move towards the valve cover 7, at the moment, the buffer oil cylinder 5 conveys hydraulic oil towards the buffer cavity 6, and after the hydraulic oil enters the buffer cavity 6, acting force is generated on the piston, so that movement energy of the piston is effectively absorbed, and the buffer effect is achieved.
The invention has the specific working principle that: when the valve is in idle load, sealing gas is introduced into the sealing ring inlet and outlet 8, the sealing gas enters the sealing cavity 9, the movable piston 3 moves towards the valve seat 1, meanwhile, a part of sealing gas enters the balance cavity A through the second channel 14, the sealing gas entering the balance cavity A moves the movable balance piston 11 towards the piston 3, so that the piston drives the valve core 2 to approach towards the valve body 1, and meanwhile, the balance piston 11 also approaches towards the piston 3, when the valve core 2 contacts and seals with the valve seat 1, the balance piston 11 also contacts with the piston and applies reverse thrust force to the piston so as to reduce the sealing force between the valve seat and the valve core, so that the sealing specific pressure between the valve core and the valve seat is in a proper value, and the damage of the valve seat and the valve core caused by the fact that the sealing specific pressure between the valve core and the valve seat is larger when high-pressure medium is sealed is avoided; when in sealing, a sealed medium enters the medium inlet 15 of the valve seat 1, the sealed medium enters the balance cavity B through the first channel 10, acting force is generated on the balance piston 11 to partially or completely offset the force from the balance cavity A, sealing gas in the balance cavity A is forced to enter the sealing cavity 9 through the second channel 14 to act on the piston 3, and the sealing performance between the valve core 2 and the valve seat 1 is further improved.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The utility model provides a quick valve with no-load balancing function, includes disk seat (1), valve body (4) and valve gap (7), disk seat (1) and valve gap (7) are located the both ends of valve body (4) respectively, be equipped with medium entry (15) in disk seat (1), be equipped with the valve pocket in valve body (4), be equipped with medium outlet (16) in valve gap (7), medium entry (15) and medium outlet all communicate with the valve pocket, characterized in that, be equipped with piston (3) with the valve pocket matching of valve pocket in the valve pocket of valve body (4), form sealed chamber (9) between piston (3) valve body (4), and sealed chamber (9) are close to valve gap (7), be equipped with case (2) with disk seat (1) matching on piston (3), case (2) can seal valve seat (1); a balance cavity is formed between the valve seat (1) and the valve body (4), a balance piston (11) is arranged in the balance cavity, the balance piston (11) can move towards the direction of the piston (3), a second channel (14) is further arranged on the valve body (4), two ends of the second channel (14) are respectively communicated with the seal cavity (9) and the balance cavity, a first channel (10) is further arranged on the valve seat (1), and two ends of the first channel (10) are respectively communicated with the balance cavity and the medium inlet (15).
2. A quick valve with no-load balancing function according to claim 1, characterized in that the balancing piston (11) divides the balancing chamber into a balancing chamber a (12) and a balancing chamber B (13), the balancing chamber a (12) being connected with the second channel (14) and the balancing chamber B (13) being connected with the first channel (10).
3. A quick valve with no-load balancing function according to claim 1, characterized in that the valve body (4) is further provided with a sealing gas inlet and outlet (8), and the sealing gas inlet and outlet (8) is in communication with the sealing chamber (9).
4. A quick valve with no-load balancing function according to claim 1, characterized in that a buffer chamber (6) is formed between the valve body (4) and the valve cover (7), and the piston (3) is located in the buffer chamber (6), and a first sealing ring is arranged between the valve body (4) and the valve cover (7) and the piston (3).
5. The quick valve with the no-load balancing function according to claim 4, wherein the valve body (4) is further provided with a buffer oil cylinder (5), and the buffer oil cylinder (5) is communicated with the buffer cavity (6).
6. A quick valve with no-load balancing function according to claim 1, characterized in that a second sealing ring is arranged between the valve body (4) and the valve seat (1) and the balancing piston (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811304961.6A CN109058565B (en) | 2018-11-05 | 2018-11-05 | Quick valve with no-load balancing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811304961.6A CN109058565B (en) | 2018-11-05 | 2018-11-05 | Quick valve with no-load balancing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109058565A CN109058565A (en) | 2018-12-21 |
| CN109058565B true CN109058565B (en) | 2024-03-26 |
Family
ID=64789087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811304961.6A Active CN109058565B (en) | 2018-11-05 | 2018-11-05 | Quick valve with no-load balancing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109058565B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115614489B (en) * | 2022-12-16 | 2023-03-14 | 中国空气动力研究与发展中心超高速空气动力研究所 | Transient-motion pneumatic device capable of being tested repeatedly and application method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3416561A (en) * | 1966-12-21 | 1968-12-17 | Caterpillar Tractor Co | Dual pressure relief valve with shock damping |
| SU529331A1 (en) * | 1973-09-10 | 1976-09-25 | Предприятие П/Я В-8103 | Unloaded valve |
| GB2066422A (en) * | 1979-12-21 | 1981-07-08 | Kirkman D F | Solenoid Operated Shut Off Valve with Manual Reset Valve |
| CN201475454U (en) * | 2009-07-08 | 2010-05-19 | 吴天尧 | Symmetrical balance fire retardance breather valve |
| CN108028338A (en) * | 2015-07-28 | 2018-05-11 | 百美德科技器具贸易有限公司 | Pressure equaliser |
| CN207470863U (en) * | 2017-10-12 | 2018-06-08 | 四川德力铁道科技有限公司 | A kind of type of respiration valve |
| CN208886101U (en) * | 2018-11-05 | 2019-05-21 | 成都华科阀门制造有限公司 | A kind of quick valve of band zero load balance |
-
2018
- 2018-11-05 CN CN201811304961.6A patent/CN109058565B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3416561A (en) * | 1966-12-21 | 1968-12-17 | Caterpillar Tractor Co | Dual pressure relief valve with shock damping |
| SU529331A1 (en) * | 1973-09-10 | 1976-09-25 | Предприятие П/Я В-8103 | Unloaded valve |
| GB2066422A (en) * | 1979-12-21 | 1981-07-08 | Kirkman D F | Solenoid Operated Shut Off Valve with Manual Reset Valve |
| CN201475454U (en) * | 2009-07-08 | 2010-05-19 | 吴天尧 | Symmetrical balance fire retardance breather valve |
| CN108028338A (en) * | 2015-07-28 | 2018-05-11 | 百美德科技器具贸易有限公司 | Pressure equaliser |
| CN207470863U (en) * | 2017-10-12 | 2018-06-08 | 四川德力铁道科技有限公司 | A kind of type of respiration valve |
| CN208886101U (en) * | 2018-11-05 | 2019-05-21 | 成都华科阀门制造有限公司 | A kind of quick valve of band zero load balance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109058565A (en) | 2018-12-21 |
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