CN112212037A - Self-adaptive guide low-temperature valve with blowing function - Google Patents
Self-adaptive guide low-temperature valve with blowing function Download PDFInfo
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- CN112212037A CN112212037A CN202011086674.XA CN202011086674A CN112212037A CN 112212037 A CN112212037 A CN 112212037A CN 202011086674 A CN202011086674 A CN 202011086674A CN 112212037 A CN112212037 A CN 112212037A
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way 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
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
Abstract
The utility model provides a self-adaptation direction cryogenic valve that area blowdown includes: the valve seat is internally provided with a first cavity and a second cavity which are intersected, and two ends of the first cavity and two ends of the second cavity are respectively provided with an opening; the piston body is arranged in the first cavity in a sliding mode along the opening direction of the first cavity; the control gas sealing body is sleeved outside the piston body; the main valve core base body is arranged at the intersection of the first cavity and the second cavity; the main valve core sealing body is fixed at one end of the main valve core base body, which is far away from the piston body; the main spring is arranged between the main valve core base body and the piston body; the auxiliary valve core base body is arranged in the inlet cavity and is in sliding fit with the cavity II, the inlet cavity is divided into a cavity I and a cavity II by the auxiliary valve core base body, and the auxiliary valve core base body is provided with a channel hole II communicating the cavity I and the cavity II; the auxiliary valve core sealing body is fixed at one end of the auxiliary valve core base body, which is far away from the main valve core base body; and the auxiliary spring is arranged between the valve seat and the auxiliary valve core base body.
Description
Technical Field
The utility model relates to a commercial space flight liquid rocket engine technical field especially relates to a self-adaptation direction cryogenic valve of area blowdown.
Background
The commercial space engine has high production and manufacturing difficulty, and particularly has higher risk in the test process. For a liquid oxygen valve used in a commercial aerospace engine, the action characteristic of the liquid oxygen valve in a low-temperature environment has a large risk, and jamming is easy to occur, so that the on-off logic of the valve is wrong. Along with the increase of the use times of the valve, the motion guide pair is abraded, and the abrasion is intensified in a low-temperature environment, so that the valve is in failure.
Disclosure of Invention
To address at least one of the above technical problems, the present disclosure provides an adaptive pilot cryogenic valve with blow-off.
According to one aspect of the present disclosure, an adaptive pilot cryogenic valve with blow down, comprising:
the valve seat is internally provided with a first cavity and a second cavity which are intersected, and two ends of the first cavity and two ends of the second cavity are respectively provided with an opening;
the piston body is arranged in the first cavity in a sliding mode along the opening direction of the first cavity;
the control gas sealing body is sleeved outside the piston body, at least one end face of the control gas sealing body is provided with an annular groove, and a control gas sealing spring is arranged in each annular groove;
the main valve core base body is arranged at the intersection of the first cavity and the second cavity, the main valve core base body is in sliding fit with the piston body, the main valve core base body is arranged in a sliding mode along the opening direction of the first cavity, the two cavities are divided into an inlet cavity and an outlet cavity by the main valve core base body, and the main valve core base body is provided with a first channel hole for connecting the inlet cavity and the outlet cavity;
the main valve core sealing body is fixed at one end of the main valve core base body, which is far away from the piston body;
the main spring is arranged between the main valve core base body and the piston body and drives the main valve core base body and the piston body to be away from each other;
the auxiliary valve core base body is arranged in the inlet cavity and is in sliding fit with the cavity II, the inlet cavity is divided into a cavity I and a cavity II by the auxiliary valve core base body, and the auxiliary valve core base body is provided with a channel hole II communicating the cavity I and the cavity II;
the auxiliary valve core sealing body is fixed at one end of the auxiliary valve core base body, which is far away from the main valve core base body;
and the auxiliary spring is arranged between the valve seat and the auxiliary valve core base body and drives the auxiliary valve core sealing body to plug the opening of the cavity II close to the inlet cavity.
According to at least one embodiment of the present disclosure, further comprising:
the medium sealing body is arranged at one end, close to the main valve core base body, of the control gas sealing body and sleeved outside the piston body, at least one end face of the medium sealing body is provided with a ring groove, and a medium sealing spring is arranged in each ring groove.
According to at least one embodiment of the present disclosure, the main valve element base body is provided with a fitting hole which is in sliding fit with the piston body.
According to at least one embodiment of the present disclosure, a spring mounting hole is opened at one end of the piston body facing the main valve core base body, the main spring is located in the spring mounting hole, and two ends of the main spring respectively abut against a hole bottom of the spring mounting hole and a hole bottom of the matching hole.
According to at least one embodiment of the present disclosure, the first and second cavities are orthogonal.
According to at least one embodiment of the disclosure, a spring seat hole is formed in the end face, facing the main valve core base body, of the auxiliary valve core base body along the opening direction of the cavity II, a blind hole is formed in the hole bottom of the spring seat hole, a penetrating radial hole is formed in the hole wall of the blind hole along the radial direction of the blind hole, and the radial hole, the blind hole and the spring seat hole form the channel hole II; the two ends of the auxiliary spring are respectively abutted to the hole bottom of the spring seat hole and the valve seat.
According to at least one embodiment of the present disclosure, the valve seat includes:
the valve body is respectively provided with a longitudinal hole and a transverse hole, the bottom of the longitudinal hole is provided with a through medium hole, the bottom of the transverse hole is provided with a through air outlet hole, and the air outlet hole is intersected with the longitudinal hole;
one end of the control filler neck is inserted into the longitudinal hole and is detachably and hermetically connected with the valve body, an inner hole, the longitudinal hole and the medium hole of the control filler neck form a first cavity, and the piston body is positioned in the inner hole of the control filler neck;
one end of the blow-off filler neck is inserted into the transverse hole and is detachably and hermetically connected with the valve body, an inner hole, the transverse hole and the air outlet hole of the blow-off filler neck form a second cavity, and the auxiliary valve core base body is positioned in the inner hole of the blow-off filler neck.
According to at least one embodiment of the present disclosure, a first sealing gasket is disposed between the control filler neck and the valve body.
According to at least one embodiment of the present disclosure, a second sealing gasket is disposed between the blow-off filler neck and the valve body.
According to at least one embodiment of the disclosure, one end of the longitudinal hole, which is far away from the medium hole, is provided with a first internal thread, and the outer circular surface of the control filler neck is provided with a first external thread matched with the first internal thread; and one end of the transverse hole, which is far away from the air outlet hole, is provided with a second internal thread, and the outer circular surface of the blow-off filler neck is provided with a second external thread matched with the second internal thread.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of an adaptive pilot cryogenic valve structure with blow down according to an embodiment of the present disclosure.
Reference numerals:
1-controlling the filler neck; 2-a piston body; 3-controlling the airtight spring; 4-controlling the gas seal body; 5-sealing gasket I; 6-a dielectric seal; 7-media seal spring; 8-a main spring; 9-a valve body; 10-main valve core base; 11-main spool seal; 12-a secondary spring; 13-secondary cartridge base; 14-secondary spool seal; 15-blowing off the filler neck; 16-a second sealing gasket; a-control gas inlet; b-blowing a gas inlet; c-a media inlet; a D-outlet;
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The blowing function and the medium on-off function are integrated; secondly, the main valve core of the self-adaptive self; in addition, the outer circle of the piston body is not in contact with the inner circle of the cavity, the control gas sealing body and the medium sealing body which are made of non-metal materials are used for supporting, and meanwhile, the control gas sealing spring and the medium sealing spring are used for compensating the abrasion loss, so that the stable state of the kinetic friction force is achieved in the whole service life of the valve.
According to a first embodiment of the present disclosure, there is provided an adaptive pilot cryogenic valve with blow-off, comprising:
the valve seat is internally provided with a first cavity and a second cavity which are intersected, and two ends of the first cavity and two ends of the second cavity are respectively provided with an opening;
the piston body 2 is arranged in the first cavity in a sliding mode along the opening direction of the first cavity;
the control gas sealing body 4 is sleeved outside the piston body 2, at least one end face of the control gas sealing body 4 is provided with an annular groove, and a control gas sealing spring 3 is arranged in each annular groove;
the main valve core base body 10 is arranged at the intersection of the first cavity and the second cavity, the main valve core base body 10 is in sliding fit with the piston body 2, the main valve core base body 10 is arranged in a sliding mode along the opening direction of the first cavity, the two cavities are divided into an inlet cavity and an outlet cavity by the main valve core base body 10, and the main valve core base body 10 is provided with a first channel hole connecting the inlet cavity and the outlet cavity;
the main valve core sealing body 11 is fixed at one end of the main valve core base body 10 far away from the piston body 2;
a main spring 8, disposed between the main spool base body 10 and the piston body 2, urging the main spool base body 10 and the piston body 2 away from each other;
the auxiliary valve core base body 13 is arranged in the inlet cavity and is in sliding fit with the cavity II, the inlet cavity is divided into a cavity I and a cavity II by the auxiliary valve core base body 13, and the auxiliary valve core base body 13 is provided with a channel hole II communicated with the cavity I and the cavity II;
the auxiliary valve core sealing body 14 is fixed at one end of the auxiliary valve core base body 13, which is far away from the main valve core base body 10;
and the auxiliary spring 12 is arranged between the valve seat and the auxiliary valve core base body 13 and drives the auxiliary valve core sealing body 14 to seal the opening of the second cavity close to the inlet cavity.
In an optional embodiment, further comprising:
the medium sealing body 6 is arranged at one end, close to the main valve core base body 10, of the control gas sealing body 4 and sleeved outside the piston body 2, at least one end face of the medium sealing body 6 is provided with a ring groove, and a medium sealing spring 7 is arranged in each ring groove.
In an alternative embodiment, the valve seat comprises:
the valve body 9 is respectively provided with a longitudinal hole and a transverse hole, the bottom of the longitudinal hole is provided with a through medium hole, the bottom of the transverse hole is provided with a through air outlet hole, and the air outlet hole is intersected with the longitudinal hole;
one end of the control filler neck 1 is inserted into the longitudinal hole and is detachably and hermetically connected with the valve body 9, an inner hole, the longitudinal hole and a medium hole of the control filler neck 1 form a first cavity, and the piston body 2 is positioned in the inner hole of the control filler neck 1;
one end of the blow-off filler neck 15 is inserted into the transverse hole and is detachably and hermetically connected with the valve body 9, an inner hole, the transverse hole and an air outlet hole of the blow-off filler neck 15 form the second cavity, and the auxiliary valve core base body 13 is positioned in the inner hole of the blow-off filler neck 15.
The outer disc of piston body 2 and the hole of control filler neck 1 are clearance fit, and two slots have been seted up to the outer disc of piston body 2, and the medium seal 6 and the control gas seal 4 that are made by non-metallic sealing material are installed respectively to two slots, and medium seal 6 and control gas seal 4 all cooperate with the hole of control filler neck 1, realize the radial positioning of piston body 2, avoid the piston body 2 of metal to make the hole contact of control filler neck 2 with the metal. Under the action of the control gas sealing body 4 and the medium sealing body 6, the piston body 2 is in a floating state, and in the linear motion process of the piston body 2, the piston body 2 can be well adapted to the guide of the inner hole of the control filler neck 2 and does not generate friction with the inner hole of the control filler neck 1, so that the abrasion of the piston body 2 is reduced, and the service life is prolonged.
The control gas sealing body 4 is internally provided with a control gas sealing spring 3, and when the control gas is not communicated, the control gas sealing body 4 compensates the deformation of the control gas sealing body 4 made of nonmetal under the action of the control gas sealing spring 3; when control gas enters through the control gas inlet A, the control gas sealing body 4 is deformed, is in close contact with the inner holes of the piston body 2 and the control filler pipe nozzle 1, generates compression deformation, and achieves the sealing purpose. A medium sealing spring 7 is arranged in the medium sealing body 6, and when the medium sealing body 6 is in a medium-free state, the medium sealing body 6 compensates the deformation of the medium sealing body 6 made of nonmetal under the action of the medium sealing spring 7; when the medium enters from the medium inlet C, the medium sealing body 6 deforms, is in close contact with the piston body 2 and the inner hole of the control filler neck 1, generates compression deformation and achieves the sealing purpose.
Main valve element body 10 is in a floating state, main valve element body 10 compresses main valve element sealing body 11 under the action of main spring 6, medium inlet C is closed, and the valve is in an initial closed state. When the control gas is turned on, the piston body 2 compresses the main valve element base body 10 to press the main valve element sealing body 11 against the medium inlet C, and the valve is in a working sealing state.
In an optional embodiment, one end of the longitudinal hole, which is far away from the medium hole, is provided with a first internal thread, and the outer circular surface of the control filler neck 1 is provided with a first external thread matched with the first internal thread; and one end of the transverse hole, which is far away from the air outlet hole, is provided with a second internal thread, and the outer circular surface of the blow-off filler neck 15 is provided with a second external thread matched with the second internal thread.
In an alternative embodiment, a sealing gasket 5 is arranged between the control filler neck 1 and the valve body 9.
In an alternative embodiment, a second sealing gasket 16 is arranged between the blow-off filler neck 15 and the valve body 9.
The valve body 9 is in threaded connection with the control filler neck 1, the valve body 9 is in threaded connection with the blow-off filler neck 15, and a sealing gasket I5 and a sealing gasket II 16 are compressed respectively, so that the purpose of static sealing is achieved.
The sub valve core base body 13 presses the sub valve core sealing body 14 under the action of the sub spring 12, and the blowing gas inlet B is in a closed state.
In an alternative embodiment, the main valve core base 10 is provided with a fitting hole which is slidably fitted with the piston body 2.
In an alternative embodiment, the first and second cavities are orthogonal.
In an alternative embodiment, the main spring 8 is a cylindrical helical compression spring, specifically, a spring mounting hole is opened at one end of the piston body 2 facing the main valve element base body 10, the main spring 8 is located in the spring mounting hole, and two ends of the main spring 8 respectively abut against the bottom of the spring mounting hole and the bottom of the matching hole.
In an optional embodiment, the secondary spring 12 is a cylindrical helical compression spring, specifically, a spring seat hole is formed in the end surface of the secondary valve core base body 13 facing the primary valve core base body 10 along the opening direction of the cavity two, a blind hole is formed at the hole bottom of the spring seat hole, a through radial hole is formed in the hole wall of the blind hole along the radial direction of the blind hole, and the radial hole, the blind hole and the spring seat hole form the channel hole two; the two ends of the secondary spring 12 respectively abut against the bottom of the spring seat hole and the valve seat.
The working principle is as follows:
the pneumatic control valve adopts the pneumatic control closing of a main valve, the medium pressure is automatically opened, the auxiliary valve structure adopts the medium pressure to open, and the spring is closed. When the control gas inlet A is connected with control gas, the pressure at the medium inlet C cannot enter the first cavity, and the main valve element is in a closed state. When the control gas is cut off, the pressure at the medium inlet C overcomes the elasticity of the main spring 8, the valve is opened, the medium pressure generates unbalanced acting force to keep the valve in an opening state, the medium enters from the medium inlet C, and the medium flows out from the outlet D. When control gas is connected, the pressure of the control gas overcomes the unbalanced acting force of the medium, the piston body 2 is pushed to move, and the valve is closed.
The secondary valve core sealing body 14 is in a closed state under the action of the secondary spring 12, when the blowing gas inlet B is connected to blowing gas, the secondary valve is opened, the secondary valve is kept in an open state under the unbalanced acting force of the blowing gas, the blowing gas enters from the blowing gas inlet B, and flows out from the outlet D. When the blow-off is interrupted, the secondary spool seal 14 closes under the influence of the secondary spring 12.
Compared with the prior art, the beneficial effect of this disclosure is:
(1) the floating structure is adopted to reduce the friction force between the piston body 2 and the inner hole of the control filler pipe nozzle 1, so that the abrasion loss is prevented from being reduced, and the service life is prolonged;
(2) the control air sealing body 4 and the medium sealing body 6 which are made of non-metal materials are used for carrying out floating support on the piston body 2, the purpose of self-adaptive centering and centering of the piston body 2 is achieved, and the coaxiality of the piston body and the cavity I in the movement process is guaranteed;
(3) the control gas sealing spring 3 and the medium sealing spring 7 are adopted to compensate the abrasion loss of the non-metal material, so that the support stability of the piston body in the whole life process is ensured, and the sealing purpose is achieved;
(4) and in a low-temperature state, the control gas sealing spring 3 and the medium sealing spring 7 are used for carrying out nonmetal shrinkage compensation, so that the dynamic sealing characteristic of the piston body in the low-temperature environment movement process is ensured.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. An adaptive pilot cryogenic valve with blow down, comprising:
the valve seat is internally provided with a first cavity and a second cavity which are intersected, and two ends of the first cavity and two ends of the second cavity are respectively provided with an opening;
the piston body is arranged in the first cavity in a sliding mode along the opening direction of the first cavity;
the control gas sealing body is sleeved outside the piston body, at least one end face of the control gas sealing body is provided with an annular groove, and a control gas sealing spring is arranged in each annular groove;
the main valve core base body is arranged at the intersection of the first cavity and the second cavity, the main valve core base body is in sliding fit with the piston body, the main valve core base body is arranged in a sliding mode along the opening direction of the first cavity, the two cavities are divided into an inlet cavity and an outlet cavity by the main valve core base body, and the main valve core base body is provided with a first channel hole for connecting the inlet cavity and the outlet cavity;
the main valve core sealing body is fixed at one end of the main valve core base body, which is far away from the piston body;
the main spring is arranged between the main valve core base body and the piston body and drives the main valve core base body and the piston body to be away from each other;
the auxiliary valve core base body is arranged in the inlet cavity and is in sliding fit with the cavity II, the inlet cavity is divided into a cavity I and a cavity II by the auxiliary valve core base body, and the auxiliary valve core base body is provided with a channel hole II communicating the cavity I and the cavity II;
the auxiliary valve core sealing body is fixed at one end of the auxiliary valve core base body, which is far away from the main valve core base body;
and the auxiliary spring is arranged between the valve seat and the auxiliary valve core base body and drives the auxiliary valve core sealing body to plug the opening of the cavity II close to the inlet cavity.
2. The adaptive pilot cryogenic valve with blow down of claim 1, further comprising:
the medium sealing body is arranged at one end, close to the main valve core base body, of the control gas sealing body and sleeved outside the piston body, at least one end face of the medium sealing body is provided with a ring groove, and a medium sealing spring is arranged in each ring groove.
3. The adaptive pilot cryogenic valve with blow down of claim 1, wherein the main valve core base defines a mating bore that slidably engages the piston body.
4. The adaptive pilot cryogenic valve with blow down of claim 3, wherein the end of the piston body facing the main valve core base body is provided with a spring mounting hole, the main spring is located in the spring mounting hole, and two ends of the main spring respectively abut against the bottom of the spring mounting hole and the bottom of the matching hole.
5. The adaptive pilot cryogenic valve with blow down of claim 1, wherein the first chamber and the second chamber are orthogonal.
6. The adaptive guide cryogenic valve with blow-off of claim 1, wherein the end surface of the secondary valve core base body facing the main valve core base body is provided with a spring seat hole along the opening direction of the second cavity, the bottom of the spring seat hole is provided with a blind hole, the wall of the blind hole is provided with a radial hole penetrating along the radial direction of the blind hole, and the radial hole, the blind hole and the spring seat hole form the second channel hole; the two ends of the auxiliary spring are respectively abutted to the hole bottom of the spring seat hole and the valve seat.
7. The adaptive pilot cryogenic valve with blow down of claim 1, wherein the valve seat comprises:
the valve body is respectively provided with a longitudinal hole and a transverse hole, the bottom of the longitudinal hole is provided with a through medium hole, the bottom of the transverse hole is provided with a through air outlet hole, and the air outlet hole is intersected with the longitudinal hole;
one end of the control filler neck is inserted into the longitudinal hole and is detachably and hermetically connected with the valve body, an inner hole, the longitudinal hole and the medium hole of the control filler neck form a first cavity, and the piston body is positioned in the inner hole of the control filler neck;
one end of the blow-off filler neck is inserted into the transverse hole and is detachably and hermetically connected with the valve body, an inner hole, the transverse hole and the air outlet hole of the blow-off filler neck form a second cavity, and the auxiliary valve core base body is positioned in the inner hole of the blow-off filler neck.
8. The adaptive pilot cryogenic valve with blow down of claim 7 wherein a first gasket seal is disposed between the control filler neck and the valve body.
9. The adaptive pilot cryogenic valve with purge of claim 7, wherein a second gasket seal is disposed between the purge filler neck and the valve body.
10. The adaptive pilot cryogenic valve with blow-off of claim 7, wherein one end of the longitudinal hole away from the medium hole is provided with a first internal thread, and the outer circumferential surface of the control filler neck is provided with a first external thread matched with the first internal thread; and one end of the transverse hole, which is far away from the air outlet hole, is provided with a second internal thread, and the outer circular surface of the blow-off filler neck is provided with a second external thread matched with the second internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086674.XA CN112212037A (en) | 2020-10-12 | 2020-10-12 | Self-adaptive guide low-temperature valve with blowing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086674.XA CN112212037A (en) | 2020-10-12 | 2020-10-12 | Self-adaptive guide low-temperature valve with blowing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112212037A true CN112212037A (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011086674.XA Pending CN112212037A (en) | 2020-10-12 | 2020-10-12 | Self-adaptive guide low-temperature valve with blowing function |
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| CN (1) | CN112212037A (en) |
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Application publication date: 20210112 |