CN216975819U - Pneumatic pressure and relief valve - Google Patents
Pneumatic pressure and relief valve Download PDFInfo
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- CN216975819U CN216975819U CN202122725053.8U CN202122725053U CN216975819U CN 216975819 U CN216975819 U CN 216975819U CN 202122725053 U CN202122725053 U CN 202122725053U CN 216975819 U CN216975819 U CN 216975819U
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Abstract
The embodiment of the application discloses pneumatics adds lets out valve relates to the valve technical field that adds of liquid rocket tank, includes: a valve seat; the lower end of the valve body is connected with the valve seat, and a connecting port is formed in the valve body; the lower end of the valve core is in sealing fit with the valve seat, a deep hole is formed in the upper end of the valve core, and the valve seat is spliced with the deep hole; the spring is arranged between the valve core and the valve body; the valve cover is arranged at one end of the valve seat far away from the valve body; the detection module is connected with one end, far away from the valve seat, of the valve cover and is used for detecting the motion state of the filling and discharging valve; one end of the valve rod is in contact with the valve core, and the other end of the valve rod sequentially penetrates through the valve seat and the valve cover to extend into the detection module; the detection module is arranged at the valve cover, so that the opening and closing states of the filling and discharging valve can be timely and accurately judged in the working process.
Description
Technical Field
The application relates to the technical field of liquid rocket tank charging and discharging valves, in particular to a pneumatic charging and discharging valve.
Background
The storage tank is an important structural part and a propellant storage device of the liquid carrier rocket, and the filling of the propellant into the storage tank is an important operation of the launching organization process of the liquid rocket. The opening and closing of the charging and discharging valve ensures the normal circulation of the storage tank propellant in the charging and discharging process and the sealing of the propellant after the charging and discharging is finished. Conventional charge and discharge valves are primarily of the push-rod and pneumatic type.
The traditional pneumatic type charging and discharging valve consists of a valve body, a valve seat, a valve core, a valve cover, a valve rod, a corrugated pipe assembly and other parts. Pneumatic blow-off valves are relatively complex in construction, but are more maneuverable than ram-type blow-off valves and help simplify the remaining components of the propellant blow-off system. The control gas is introduced to act on the valve rod to jack the valve core, and the valve core is closed under the action of the reset spring after the valve rod returns.
Aiming at the low-temperature dynamic seal between the valve rod and the valve body, the traditional pneumatic filling valve mostly adopts a corrugated pipe structure, and the structure is complex, the cost is high, and the period is long. On the other hand, the conventional pressure relief valve cannot judge whether the pressure relief valve is normally opened or closed in the working process, and other parameters are required to assist in judgment.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a pneumatic valve that leaks to solve the technical problem that exists among the prior art: the defect that whether the traditional filling and discharging valve is normally opened or closed in the working process cannot be judged is solved.
In order to solve the technical problem, the following technical scheme is adopted in the application:
a first aspect of an embodiment of the present application provides a pneumatic pressure bleed valve, including: a valve seat; the lower end of the valve body is connected with the valve seat, and a connecting port is formed in the valve body; the lower end of the valve core is in sealing fit with the valve seat, a deep hole is formed in the upper end of the valve core, and the valve seat is spliced with the deep hole; the spring is arranged at the joint of the valve core and the valve body; the valve cover is arranged at one end of the valve seat far away from the valve body; the detection module is connected with one end, far away from the valve seat, of the valve cover and is used for detecting the motion state of the charging and discharging valve; and one end of the valve rod is in contact with the valve core, and the other end of the valve rod sequentially penetrates through the valve seat and the valve cover and extends into the detection module.
In some embodiments, the module comprises a position display installation cavity, a through hole is formed in the position display installation cavity to ensure that the valve rod passes through the through hole, and a detection unit is arranged on the inner wall of the position display installation cavity.
In some embodiments, the detection unit is a microswitch.
In some embodiments, the valve stem comprises: the upper top is used for jacking the valve core; the lower trigger part is provided with a trigger piece, and the trigger piece is matched with the microswitch.
In some embodiments, the valve core is a solid of revolution, and the valve core is circumferentially provided with at least one set of symmetrical light holes.
In some embodiments, the valve seat comprises a medium flow cavity, a discharge cavity and a control cavity, the medium flow cavity is arranged at one end of the valve seat close to the valve body, the discharge cavity is arranged in the middle of the valve seat, and the control cavity is arranged at one end close to the valve cover.
In some embodiments, the valve seat is sealed therein by an "O" ring.
In some embodiments, a first mounting port is arranged on the control chamber, a second mounting port is arranged on the discharge chamber, a first nozzle is mounted on the first mounting port and used for communicating control gas, and a second nozzle is mounted on the second mounting port and used for discharging a small amount of leaked medium and control gas.
In some embodiments, the upper end of the valve seat is provided with a protruding part which is in sealing fit with the valve body and the valve core.
In some embodiments, the lower end of the valve core is provided with a hot-pressing plastic surface, and the hot-pressing plastic surface is in sealing fit with the bulge.
According to the technical scheme, the method has at least the following advantages and positive effects:
a pneumatic valve that leaks that adds in this application through set up detection module in valve gap department, can in time accurately judge and add the valve of leaking and open and close the state in the course of the work.
A pneumatic valve that lets out that adds in this application through the unthreaded hole that sets up the symmetry in the case week, effectively balances the effort of propellant medium to the case, makes the motion of case more smooth and easy.
A pneumatic valve that lets out that adds in this application seals through adopting "O" type sealing washer, can effectively simplify inner structure and reduce the construction quality.
The liquid oxygen methane low-temperature liquid rocket has the advantages of compact and reasonable structural design, high reliability, light structural mass and the like, and is suitable for low-temperature environments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a pneumatic bleed valve according to an embodiment.
The reference numerals are explained below: 1. a valve seat; 2. a valve body; 3. a valve core; 4. a valve stem; 5. a valve cover; 6. a position display mounting plate; 7. a microswitch; 8. an O-shaped sealing ring; 9. a spring; 10. a trigger piece; 11. a first mounting port 12 and a second mounting port.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.
The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "communicate", "mount", "connect", and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Please refer to fig. 1.
FIG. 1 is a schematic structural view of an embodiment of a pneumatic add/bleed valve of the present application, as shown, comprising: a pneumatic charge and discharge valve comprising: the valve comprises a valve seat 1, a valve body 2, a valve core 3, a spring 9, a detection module, a valve rod 4 and a valve cover 5, wherein the lower end of the valve body 2 is connected with the valve seat 1, and a connecting port is arranged on the valve body 2;
the lower end of the valve core 3 is in sealing fit with the valve seat 1, the upper end of the valve core 3 is provided with a deep hole, and a cylindrical surface inside the valve seat 1 is spliced with the deep hole to play a role in guiding; the top of the valve core 3 is processed with a deep hole, and the valve core 3 is matched with the guide surface of the valve body 2 to ensure that the valve core 3 does not block during movement.
The spring 9 is arranged between the valve core 3 and the valve body 2;
the valve cover 5 is arranged at one end of the valve seat 1 far away from the valve body 2;
the detection module is connected with one end, far away from the valve seat 1, of the valve cover 5 and is used for detecting the motion state of the charging and discharging valve;
one end of the valve rod 4 is in contact with the valve core 3, and the other end of the valve rod 4 sequentially penetrates through the valve seat 1 and the valve cover 5 to extend into the detection module.
In this embodiment, the module shows installation cavity 6 including the position, it has the through-hole to guarantee that valve rod 4 passes through to open on the position shows installation cavity 6, 6 inner walls in position shows installation cavity are equipped with detecting element. In a specific implementation process, the detection unit is a microswitch 7.
In the present embodiment, the valve stem 4 includes: the upper top is used for ejecting the valve core 3; the lower trigger part is provided with a trigger piece 10, and the trigger piece 10 is matched with the microswitch 7. In the specific implementation process, after the action of the valve rod 4 is finished, the contact spring 10 is driven to press the button of the microswitch 7, and a corresponding signal is output; a signal may be sent indicating that the charge and bleed valve is in an open state and vice versa indicating that the charge and bleed valve is in a closed state.
In this embodiment, the valve element 3 is a solid of revolution, and at least one set of symmetrical light holes is arranged in the circumferential direction of the valve element 3. Effectively balance the acting force of the propellant medium on the valve core 3, and ensure that the valve core 3 moves more smoothly.
In this embodiment, valve seat 1 includes the medium flow chamber, lets out the chamber and control chamber, the medium flow chamber set up in valve seat 1 is close to the one end of valve body 2, let out the chamber set up in valve seat 1 middle part, the control chamber sets up in the one end of being close to valve gap 5.
Be equipped with first installing port 11 on the control chamber, it is equipped with second installing port 12 on the chamber to let out, install first mouthpiece on the first installing port 11, first mouthpiece is used for putting through control gas, the second mouthpiece is installed to second installing port 12, the second mouthpiece is used for discharging a small amount of medium and the control gas of leaking.
In this embodiment, the valve seat 1 is sealed by an O-ring 8. In the specific implementation process, the medium flow cavity, the discharge cavity and the control cavity of the valve seat 1 are all sealed by the O-shaped sealing ring 8, so that the air tightness is guaranteed, the internal structure can be effectively simplified, and the structural quality can be reduced.
In this embodiment, the upper end of the valve seat 1 is provided with a protruding portion, and the protruding portion is in sealing fit with the valve body 2 and the valve core 3. For ensuring the gas tightness of the valve seat 1.
In this embodiment, the lower end of the valve core 3 is provided with a hot-pressed plastic surface, and the hot-pressed plastic surface is in sealing fit with the protruding portion. For ensuring the gas tightness of the valve seat 1.
In the specific implementation process, when the valve core 3 is attached to the sealing surface at the upper end of the valve seat 1, the valve is in a closed sealing state. When the propellant needs to be filled or discharged, control gas is introduced into the first mounting port 11 and enters the control cavity, and the control gas pressure basically keeps stable due to the fact that the O-shaped sealing ring 8 is arranged in the control cavity. The control gas of a certain pressure generates acting force on the valve rod 4, and when the acting force is larger than the spring force and the internal friction force generated by the spring 9, the valve core 3 moves upwards to be opened. After the work is finished, the control gas is withdrawn, and the valve core 3 is closed and kept sealed under the action of the reset force of the spring 9.
When the valve rod 4 normally works and moves upwards, the trigger piece 10 is driven to press the button of the microswitch 7, and when the valve rod 4 normally retracts, the button returns to the non-pressed state. The opening and closing state of the valve at the moment can be judged according to the corresponding signal whether the button of the microswitch 7 is pressed and output.
According to the technical scheme, the method has at least the following advantages and positive effects:
a pneumatic valve that leaks that adds in this application through set up detection module in valve gap department, can in time accurately judge and add the valve of leaking and open and close the state in the course of the work.
A pneumatic valve that lets out that adds in this application through set up symmetrical unthreaded hole in the case week, effectively balances the effort of propellant medium to the case, makes the motion of case more smooth and easy.
A pneumatic valve that lets out that adds in this application seals through adopting "O" type sealing washer, can effectively simplify inner structure and reduce the construction quality.
The liquid oxygen methane low-temperature liquid rocket has the advantages of compact and reasonable structural design, high reliability, light structural mass and the like, and is suitable for low-temperature environments.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A pneumatic charge and discharge valve, comprising:
a valve seat;
the lower end of the valve body is connected with the valve seat, and a connecting port is formed in the valve body;
the lower end of the valve core is in sealing fit with the valve seat, a deep hole is formed in the upper end of the valve core, and the valve seat is spliced with the deep hole;
a spring disposed between the valve spool and the valve body;
the valve cover is arranged at one end of the valve seat far away from the valve body;
the detection module is connected with one end, far away from the valve seat, of the valve cover and is used for detecting the motion state of the charging and discharging valve;
and one end of the valve rod is in contact with the valve core, and the other end of the valve rod sequentially penetrates through the valve seat and the valve cover and extends into the detection module.
2. The pneumatic add-and-drop valve as claimed in claim 1, wherein the module comprises a position display installation cavity, the position display installation cavity is provided with a through hole for ensuring the valve rod to pass through, and the inner wall of the position display installation cavity is provided with a detection unit.
3. A pneumatic charge and discharge valve as claimed in claim 2 wherein said sensing means is a microswitch.
4. A pneumatic charge and discharge valve according to claim 3 wherein said valve stem comprises:
the upper top is used for jacking the valve core;
the lower trigger part is provided with a trigger piece, and the trigger piece is matched with the microswitch.
5. A pneumatic add/drain valve as claimed in claim 1, wherein said valve core is a solid of revolution, and said valve core is circumferentially provided with at least one set of symmetrical light holes.
6. A pneumatic add-and-bleed valve as in claim 1, wherein said valve seat comprises a media flow chamber, a bleed chamber and a control chamber, said media flow chamber being disposed at an end of said valve seat adjacent to said valve body, said bleed chamber being disposed at a central portion of said valve seat, said control chamber being disposed at an end adjacent to said valve cover.
7. A pneumatic bleed valve as in claim 1 wherein the valve seat is sealed by an O-ring seal.
8. A pneumatic add-and-bleed valve as in claim 6, wherein said control chamber is provided with a first mounting port, said bleed chamber is provided with a second mounting port, said first mounting port is provided with a first nozzle for connecting the control gas, said second mounting port is provided with a second nozzle for discharging the leaked small amount of the medium and the control gas.
9. A pneumatic add-and-bleed valve as in claim 1 wherein the upper end of the valve seat is provided with a raised portion that sealingly engages the valve body and the valve core.
10. A pneumatic add/drain valve as defined in claim 9, wherein said lower end of said valve core is provided with a hot-pressed plastic surface, said hot-pressed plastic surface being in sealing engagement with said raised portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122725053.8U CN216975819U (en) | 2021-11-08 | 2021-11-08 | Pneumatic pressure and relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122725053.8U CN216975819U (en) | 2021-11-08 | 2021-11-08 | Pneumatic pressure and relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216975819U true CN216975819U (en) | 2022-07-15 |
Family
ID=82344819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122725053.8U Active CN216975819U (en) | 2021-11-08 | 2021-11-08 | Pneumatic pressure and relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216975819U (en) |
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2021
- 2021-11-08 CN CN202122725053.8U patent/CN216975819U/en active Active
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