A kind of Hall electric propulsion valve and component

Abstract

The present invention discloses a propellant adding and discharging valve and components for Hall electric propulsion, and relates to the technical field of aerospace propulsion systems. The propellant adding and discharging valve device includes: a gas-passing joint, a gas-passing sealing gasket, a valve body, a locking ring, an elastic sleeve, an elastic member, a valve seat, a sealing ball, a sealing valve seat, and a sealing gasket; an inner cavity is provided inside the valve body, which is a valve body accommodating cavity; the valve body accommodating cavity forms a main valve body channel; a through vent hole is provided in abutment with the inner cavity on the left side of the valve body to form a gas-passing channel; a through vent hole is provided in abutment with the inner cavity on the right side of the valve body to form an air intake channel; a valve seat air intake channel is provided at the bottom of the sealing valve seat; the valve seat air intake channel is connected to the inner wall of the valve body main channel. The present invention reduces the volume of the adding and discharging valve, and provides more possibilities for the integrated testing of miniaturized, lightweight, and highly integrated aerospace products.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace propulsion systems, and in particular to a Hall electric propulsion add-discharge valve and components. Background Art

[0002] In the prior art, the filling and discharging valves are mainly used in the aerospace field for the filling and discharging of propellants in rocket and satellite propulsion systems. During the stage of filling the tank with working fluid in the electric propulsion system, the filled fluid is required to flow in one direction while preventing the fluid from flowing back in the opposite direction. The automatic closing function is achieved by utilizing the fluid pressure of the sealing ball in the opposite direction of the fluid flow to prevent the fluid from flowing back in the opposite direction. When the fluid flows in the designed direction, the sealing ball will be pushed open by the fluid pressure to form an open filling state, and when the fluid tries to flow back, the sealing ball will be subjected to the pressure of the reverse fluid and automatically close the valve to prevent the high-pressure gas from flowing back.

[0003] Traditional aerospace filling and discharging valves are mostly in the form of "cross" or "T" shaped structures, and are mostly used as ground filling or discharging service valves. The valve switch control is mostly manual operation, with large structure size and heavy weight, which is not conducive to product integration. In order to ensure sealing, welding is mostly used for the joints, which has many processes, high process requirements, high production costs and is not conducive to maintenance.

[0004] There is an urgent need to design a valve and components with high reliability, maintainability, simple process and low cost, so as to improve its working reliability and efficiency. Summary of the invention

[0005] In order to adapt to the rapidly developing satellite Internet's demand for miniaturized, lightweight and integrable valve products, a miniaturized filling and discharging valve is designed that can be integrated inside the valve to meet the filling and discharging needs of the system stage, and can also be integrated on the satellite structure panel to meet the needs of adding propellant to the entire satellite stage or the launch site.

[0006] The present invention provides a propellant adding and discharging valve device, comprising:

[0007] Gas joint, gasket, valve body, locking ring, elastic sleeve, elastic part, valve seat, sealing ball, sealing valve seat, sealing gasket;

[0008] The locking ring, elastic sleeve, elastic member, valve seat, sealing ball, sealing valve seat and sealing gasket are installed with the valve body along the same axis;

[0009] The valve body has an inner cavity, which is a valve body accommodating cavity; the valve body accommodating cavity forms a main passage of the valve body;

[0010] The left inner cavity of the valve body is provided with a through vent hole to form a gas passage;

[0011] The right inner cavity of the valve body is abutted with a through vent hole to form an air intake passage;

[0012] A boss is provided below the valve body, a groove is provided at one end of the sealing valve seat, and the groove is filled with sealing filler;

[0013] A valve seat air inlet channel is provided at the bottom of the sealing valve seat; the valve seat air inlet channel is connected to the inner wall of the main channel of the valve body;

[0014] The sealing valve seat is slidably arranged relative to the valve body in the inner cavity of the valve body at a position connected with the air inlet channel and the air passage;

[0015] The sealing valve seat is provided with a sealing gasket which can seal the connection between the internal fluid channel and the valve body accommodating cavity.

[0016] Furthermore, a conical sealing groove is provided inside one side of the sealing valve seat, and the conical sealing groove is filled with sealing filler;

[0017] A circular boss is provided on each of the left and right sides of the sealing valve seat, and the boss is used to limit the sealing gasket;

[0018] The cross section of the sealing gasket is circular, and the outer diameter of the sealing gasket is greater than the outer diameter of the annular boss.

[0019] Furthermore, the elastic member can produce elastic deformation along the left and right directions of the main channel of the valve body and has adaptive reset capability;

[0020] A conical groove is provided on one side of the valve seat for limiting the position of the sealing ball.

[0021] Furthermore, the outer diameter of the sealing ball is smaller than the outer diameter of the valve seat, and is also smaller than the outer diameter of the tapered groove of the sealing valve seat.

[0022] Furthermore, the device also includes a ball head plug, a tightening nut, and an anti-dropping retaining spring.

[0023] Furthermore, the air inlet passage interface on the right part of the valve body is provided with a conical sealing groove;

[0024] The ball plug forms an annular line seal with the conical sealing groove on the right part of the valve body.

[0025] Furthermore, the addition and discharge valve device adopts a redundant sealing structure, and the first seal is a valve core seat seal, which is compressed and sealed by the elastic sleeve, the elastic member, the valve seat, the sealing ball, the sealing valve seat, and the sealing gasket;

[0026] The second seal is a ball head hard seal, which is tightened by the tightening nut to press and seal the interface conical surface of the conical sealing groove of the ball head plug and the intake channel interface.

[0027] Furthermore, the addition and discharge valve device has three or more mounting lugs for fixed installation.

[0028] Another aspect of the present invention provides an assembly method of a discharge valve component, wherein the discharge valve component includes the discharge valve device as described above, wherein the sealing gasket is placed on the left and right sides of the annular boss on the left and right sides of the sealing valve seat, and is installed in the valve body;

[0029] Install the sealing ball in the conical groove of the sealing valve seat provided with sealing filler;

[0030] The valve seat is coaxially mounted in the inner cavity of the valve body, and the valve seat and the sealing ball are in a semi-enclosed state;

[0031] The elastic member is coaxially mounted on the valve seat, and the elastic member sleeve is coaxially and spirally mounted on the sealing gasket provided on the left part of the sealing valve seat;

[0032] The locking ring is screwed into the thread groove provided on the left part of the valve body;

[0033] The gasket and the gas joint are screwed into the thread groove provided on the left part of the valve body;

[0034] The third part (203) is screwed onto the first part (201).

[0035] Another aspect of the present invention provides a pressure vessel comprising the addition and discharge valve device as described above.

[0036] Another aspect of the present invention provides an attitude and orbit control power system, including the addition and exhaust valve device as described above or the pressure vessel as described above.

[0037] The beneficial effects of the present invention compared with the prior art are:

[0038] 1. The present invention reduces the volume of the addition and exhaust valve, solves the problem of large volume in traditional aerospace, and can be screwed with matching parts through threads, providing more possibilities for integrated testing of miniaturized, lightweight, and highly integrated aerospace products.

[0039] 2. The present invention optimizes the structure of the air-intake and air-drain valve by integrating the valve body with the air inlet passage interface, thus solving the problem of the complex structure of the traditional aerospace air-intake and air-drain valve.

[0040] 3. The present invention solves the reliability problem of poor sealing performance of the traditional air intake and exhaust valve by arranging a ball head redundant seal at the air intake channel interface and a double sealing structure.

[0041] 4. The present invention eliminates the traditional welding method. The gas joint, sealing ball, sealing valve seat, valve seat, etc. of the present invention are easier to repair and replace, which is beneficial to reducing costs and improving efficiency.

[0042] 5. The present invention adopts an integrated structure and direct-acting adaptive reset sealing capability, which is suitable for more usage environments and products, and has a small size and a larger operating space.

[0043] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 It is a structural cross-sectional view of a valve and components of a specific embodiment of the present invention;

[0046] Figure 2 It is a structural side view of a valve and components of a specific embodiment of the present invention;

[0047] Figure 3 It is a structural explosion diagram of a discharge valve and components according to a specific embodiment of the present invention;

[0048] Figure 4 It is a structural side view of a valve and components of a specific embodiment of the present invention;

[0049] Figure 5 It is a top view of a discharge valve and components according to a specific embodiment of the present invention.

[0050] Description of Figure Numbers:

[0051] 1-gas passing part; 11-gas passing joint; 12-gas passing sealing gasket;

[0052] 2-valve body;

[0053] 3-spool seat seal; 31-locking ring; 32-elastic sleeve; 33-elastic piece; 34-valve seat; 35-sealing ball; 36-sealing valve seat; 37-sealing gasket;

[0054] 4-ball head hard seal; 41-ball head plug; 42-tightening nut; 43-anti-dropping retaining spring;

[0055] 101-intake passage; 102-exhaust passage;

[0056] 201-Part 1; 202-Part 2; 203-Part 3. DETAILED DESCRIPTION

[0057] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0058] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present application description and examples are exemplary only.

[0059] Embodiment 1

[0060] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5 As shown, it includes an air connector 11, an air sealing gasket 12, a locking ring 31, a valve body 2, an elastic sleeve 32, an elastic member 33, a valve seat 34, a sealing ball 35, a sealing valve seat 36 and a sealing gasket 37, wherein the valve body 2 can be cylindrical, and the locking ring 31, the elastic sleeve 32, the elastic member 33, the valve seat 34, the sealing ball 35, the sealing valve seat 36 and the sealing gasket 37 are installed along the same axis with the valve body 2, which can reduce the volume of the filling and discharging valve and facilitate the maintenance and replacement of various components. The valve body 2 is provided with an accommodating inner cavity to form a main channel of the valve body, and the inner cavity on the left side of the valve body is abutted with a through vent hole to form an air passage 102, and the inner cavity on the right side of the valve body is abutted with a through vent hole to form an air inlet channel 101, so that the propellant body can pass through the filling and discharging valve from the air inlet channel 101 in the filling state, and the propellant is filled through the air passage 102.

[0061] The propellant described in the present invention can be gas or liquid or a mixture of gas and liquid.

[0062] In this embodiment, a boss is provided under the valve body 2, and a groove is provided at one end of the sealing valve seat 36, and a sealing filler is filled in the groove. The groove can limit the sealing ball 35 when it contacts the sealing ball 35, and the groove and the sealing filler can play a sealing role when they abut against the sealing ball 35. An air inlet channel of the valve seat is opened at the bottom of the sealing valve seat 36, and the valve seat air inlet channel is connected with the air inlet channel 101 of the right inner cavity of the valve body 2, so that the propellant body can enter the internal fluid channel of the valve body 2 through the valve seat air inlet channel from the air inlet channel 101 in the filling state. The sealing valve seat 36 is arranged relative to the valve body 2 at the inner cavity of the valve body 2 where it is connected with the air inlet channel 101 and the air passage 102. A sealing gasket is provided on the sealing valve seat 36, which can seal the connection between the internal fluid channel of the valve body 2 and the valve body accommodating cavity.

[0063] The working principle of the propellant filling and discharging valve provided by the present invention is as follows: Figures 1 to 5 The discharge valve provided by the present invention has at least three working states. When the discharge valve is in the initial state, the elastic member 33 applies a rightward force to the valve seat 34 and the sealing ball 35, so that the sealing ball 35 is annularly pressed on the sealing packing of the sealing valve seat 36, thereby blocking the gas in the accommodating chamber of the valve body 2 from flowing out in the opposite direction through the air inlet channel 101; the discharge valve is in a sealed state when the gas enters the accommodating chamber of the valve body 2 through the air passage 102. In this state, the elastic member 33 applies a rightward force to the valve seat 34 and the sealing ball 35, so that the sealing ball 35 is annularly pressed on the sealing packing of the sealing valve seat 36. The sealing material is on the sealing material, thereby blocking the gas from entering the accommodating chamber of the valve body 2 through the air passage 102, and the gas in the chamber flows out in the opposite direction through the air inlet passage 101; the filling and discharging valve is in a ventilating state when the gas enters the accommodating chamber of the valve body 2 through the air inlet passage 101. In this state, the gas enters the accommodating chamber of the valve body 2 through the air inlet passage 101, and the leftward force exerted on the sealing ball 35 by the gas entering the accommodating chamber of the valve body 2 is greater than the rightward force exerted by the elastic member 33 on the valve seat 34 and the sealing ball 35. The sealing ball 35 is separated from the sealing valve seat 36, allowing the gas to pass through the accommodating chamber of the valve body 2 through the air passage 102, thereby realizing the filling of the propellant.

[0064] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5As shown, a conical sealing groove is provided inside one side of the sealing valve seat 36, and a sealing filler is filled in the conical sealing groove. When the charging and discharging valve is in the initial state or the gas enters the accommodating chamber of the valve body 2 through the gas passage 102, the elastic member 33 exerts a rightward force on the valve seat 34 and the sealing ball 35, so that the sealing ball 35 abuts against the sealing filler and the conical sealing groove, thereby blocking the gas from flowing out in the opposite direction through the gas inlet passage 101. The conical structure enables the sealing ball 35 to form an annular line seal with the sealing valve seat 36, and the sealing effect is better. The conical structure enables the sealing valve seat 36 to form a better limit for the sealing ball 35 in the sealing and ventilation states, thereby improving the propellant charging and discharging efficiency, reducing the wear of the components, and extending the service life. A circular annular boss is provided on each side of the sealing valve seat 36, and the boss is used to seal the sealing gasket. The ring 37 is limited so that the sealing gasket 37 cooperates with the sealing valve seat 36 to seal the end face. When the discharge valve is in the initial state or the gas enters the accommodating chamber of the valve body 2 through the air passage 102, the gas is blocked from flowing out in the opposite direction from the gap between the sealing valve seat 36 and the accommodating chamber of the valve body 2. When the discharge valve is in the ventilation state, the gas enters the accommodating chamber of the valve body 2 through the air inlet passage 101, and the gas is blocked from flowing in from the gap between the sealing valve seat 36 and the accommodating chamber of the valve body 2. The sealing gasket 37 can buffer the hard contact between the movable sealing valve seat 36 and the valve body 2, increase the sealing performance, reduce the wear of the components, and extend the service life. The cross-section of the sealing gasket 37 is circular, and the outer diameter of the sealing gasket 37 is larger than the outer diameter of the annular bosses on the left and right sides of the sealing valve seat 36, so that the sealing gasket 37 performs redundant sealing on the end face.

[0065] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5 As shown, the elastic member 33 is coaxially mounted on the valve seat 34, the elastic member 33 and the valve seat 34 are coaxially mounted in the inner cavity of the elastic member sleeve 32, the elastic member sleeve 32 is coaxially spirally mounted on the sealing gasket 37 set on the left part of the sealing valve seat 36, the locking ring 31 is screwed into the thread groove set on the left part of the valve body 2, and the screwing is convenient for the maintenance and replacement of each component. The elastic member 33 can produce elastic deformation along the left and right directions of the main channel of the valve body 2, and has adaptive reset ability. When the propellant is filled, the filling and discharge valve is in the ventilation state, and the elastic member 33 is compressed The sealing ball 35 is separated from the sealing valve seat 36, and the gas is conducted. Initially, or when the gas enters the accommodating chamber of the valve body 2 through the gas passage 102, the elastic member 33 extends and adaptively resets, and the sealing ball 35 abuts against the sealing valve seat 36, and the gas is blocked. A conical groove is provided on one side of the valve seat 34 to limit the sealing ball 35. The conical structure enables the sealing ball 35 and the valve seat 34 to form an annular line seal, which has a better sealing effect. The conical structure enables the valve seat 34 to better limit the sealing ball 35 in the sealed state.

[0066] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5As shown, the outer diameter of the sealing ball 35 is smaller than the outer diameter of the valve seat 34, and is also smaller than the outer diameter of the tapered groove of the sealing valve seat 36, so that the sealing ball 35 can effectively abut against the tapered groove of the valve seat 34 and the tapered groove of the sealing valve seat 36 to prevent gas leakage in the blocked state.

[0067] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5 As shown, it also includes a ball head plug 41, a tightening nut 42, and an anti-dropping retaining spring 43. The third part 203 is screwed onto the first part 201 through the tightening nut 42.

[0068] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5 As shown, a conical sealing groove is provided at the interface of the air inlet passage 101 on the right side of the valve body 2 , and the ball plug 41 forms an annular line seal with the conical sealing groove on the right side of the valve body 2 .

[0069] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5 As shown, the exhaust valve can be a redundant sealing structure, wherein the first seal is a valve core seat seal, which is compressed and sealed by the elastic sleeve 32, the elastic member 33, the valve seat 34, the sealing ball 35, the sealing valve seat 36, and the sealing gasket 37; the second seal is a ball head hard seal, which is tightened by tightening the nut 42 to compress and seal the interface conical surface of the conical sealing groove of the ball head plug 41 and the intake channel 101. The redundant sealing structure can enhance the sealing performance and reliability of the exhaust valve.

[0070] This embodiment provides a propellant filling and discharging valve, such as Figures 1 to 5 As shown, the valve body 2 has three or more mounting lugs for fixed installation.

[0071] The propellant adding and discharging valve provided in this embodiment of the present invention can be integrated into the inside of the valve to meet the filling and discharging of the system stage, and can also be integrated on the satellite structure panel to meet the propellant replenishment of the whole satellite stage or the launch site; the volume of the adding and discharging valve is reduced, solving the problem of large volume in traditional aerospace; it can be screwed with matching parts through threads, providing more possibilities for integrated testing of miniaturized, lightweight and highly integrated aerospace products; the structure of the adding and discharging valve is optimized through the integrated combination of the valve body and the air inlet joint, solving the problem of complex structure of traditional aerospace adding and discharging valves; by arranging a ball head redundant seal on the air inlet interface, the double sealing structure solves the reliability problem of poor sealing performance of traditional adding and discharging valves; by eliminating the traditional welding method, the air joint, sealing ball, sealing valve seat, valve seat, etc. of the present invention are easier to repair and replace, which is conducive to reducing costs and improving efficiency.

[0072] Another aspect of the present invention provides an assembly method for a discharge valve component. For the discharge valve device as described above, its sealing gasket 37 is placed on the left and right sides of the boss of the sealing valve seat 36 and filled and installed in the valve body 2. The sealing ball 35 is installed in the conical groove of the sealing valve seat 36 with sealing filler. The valve seat 34 is coaxially installed in the inner cavity of the valve body 2. The valve seat 34 and the sealing ball 35 are in a semi-enclosed state. The elastic member 33 is coaxially installed on the valve seat 34. The elastic member sleeve 32 is coaxially spirally installed on the sealing gasket 37 set on the left part of the sealing valve seat 36. The locking ring 31 is threadedly screwed into the threaded groove set on the left part of the valve body. The air sealing gasket 12 and the air joint 11 are threadedly screwed into the threaded groove set on the left part of the valve body 2. The third part 203 is threadedly screwed into the first part 201. Compared with the traditional discharge valve, the assembly method is simple to install and easy to replace, which provides more possibilities for the integrated testing of miniaturized, lightweight and highly integrated aerospace products.

[0073] Another aspect of the present invention provides a pressure vessel comprising the addition and discharge valve device as described above.

[0074] Another aspect of the present invention provides an attitude and orbit control power system, including the addition and exhaust valve device as described above or the pressure vessel as described above.

[0075] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A propellant filling and discharging valve device, characterized in that: include: Gas joint, gasket, valve body, locking ring, elastic sleeve, elastic part, valve seat, sealing ball, sealing valve seat, sealing gasket; The locking ring, elastic sleeve, elastic member, valve seat, sealing ball, sealing valve seat and sealing gasket are installed with the valve body along the same axis; The valve body has an inner cavity, which is a valve body accommodating cavity; the valve body accommodating cavity forms a main passage of the valve body; The left inner cavity of the valve body is provided with a through vent hole to form a gas passage; The right inner cavity of the valve body is abutted with a through vent hole to form an air intake passage; A boss is provided below the valve body, a groove is provided at one end of the sealing valve seat, and the groove is filled with sealing filler; A valve seat air inlet channel is provided at the bottom of the sealing valve seat; the valve seat air inlet channel is connected to the inner wall of the main channel of the valve body; The sealing valve seat is slidably arranged relative to the valve body in the inner cavity of the valve body at a position connected with the air inlet channel and the air passage; The sealing valve seat is provided with a sealing gasket which can seal the connection between the internal fluid channel and the valve body accommodating cavity.

2. The addition and discharge valve device according to claim 1, characterized in that: A conical sealing groove is provided inside one side of the sealing valve seat, and the conical sealing groove is filled with sealing filler; A circular boss is provided on each of the left and right sides of the sealing valve seat, and the boss is used to limit the sealing gasket; The cross section of the sealing gasket is circular, and the outer diameter of the sealing gasket is greater than the outer diameter of the annular boss.

3. The addition and discharge valve device according to claim 1, characterized in that: The elastic member can produce elastic deformation along the left and right directions of the main channel of the valve body and has adaptive reset capability; A conical groove is provided on one side of the valve seat for limiting the position of the sealing ball.

4. The addition and discharge valve device according to claim 2 or 3, characterized in that: The outer diameter of the sealing ball is smaller than the outer diameter of the valve seat, and is also smaller than the outer diameter of the tapered groove of the sealing valve seat.

5. The addition and discharge valve device according to claim 1, characterized in that: The device also includes a ball head plug, a tightening nut, and an anti-dropping retaining spring.

6. The addition and discharge valve device according to claim 5, characterized in that: The air inlet channel interface on the right part of the valve body is provided with a conical sealing groove; The ball plug forms an annular line seal with the conical sealing groove on the right part of the valve body.

7. The addition and discharge valve device according to claim 6, characterized in that: The addition and discharge valve device adopts a redundant sealing structure, and the first seal is the valve core seat seal, which is compressed and sealed by the elastic sleeve, the elastic member, the valve seat, the sealing ball, the sealing valve seat, and the sealing gasket; The second seal is a ball head hard seal, which is tightened by the tightening nut to press and seal the interface conical surface of the conical sealing groove of the ball head plug and the intake channel interface.

8. The addition and discharge valve device according to claim 1, characterized in that: The addition and discharge valve device has three or more mounting lugs for fixed installation.

9. A method for assembling a valve member, characterized in that: The addition and discharge valve member comprises an addition and discharge valve device according to any one of claims 5 to 8; The sealing gasket is placed on the left and right sides of the annular bosses on the left and right sides of the sealing valve seat, and is installed in the valve body; Install the sealing ball in the conical groove of the sealing valve seat provided with sealing filler; The valve seat is coaxially mounted in the inner cavity of the valve body, and the valve seat and the sealing ball are in a semi-enclosed state; The elastic member is coaxially mounted on the valve seat, and the elastic member sleeve is coaxially and spirally mounted on the sealing gasket provided on the left part of the sealing valve seat; The locking ring is screwed into the thread groove provided on the left part of the valve body; The gasket and the gas joint are screwed into the thread groove provided on the left part of the valve body; The third part (203) is screwed onto the first part (201).

10. A pressure vessel, characterized in that: It comprises a valve adding and discharging device according to any one of claims 1 to 8.

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