CN113324120A - Conveying control component of liquid rocket propellant - Google Patents

Conveying control component of liquid rocket propellant Download PDF

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Publication number
CN113324120A
CN113324120A CN202110455934.4A CN202110455934A CN113324120A CN 113324120 A CN113324120 A CN 113324120A CN 202110455934 A CN202110455934 A CN 202110455934A CN 113324120 A CN113324120 A CN 113324120A
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CN
China
Prior art keywords
plug
socket
valve body
valve core
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110455934.4A
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Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Xinghe Power Space Technology Co ltd
Beijing Xinghe Power Equipment Technology Co Ltd
Galactic Energy Beijing Space Technology Co Ltd
Original Assignee
Sichuan Xinghe Power Space Technology Co ltd
Beijing Xinghe Power Equipment Technology Co Ltd
Galactic Energy Beijing Space Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Sichuan Xinghe Power Space Technology Co ltd, Beijing Xinghe Power Equipment Technology Co Ltd, Galactic Energy Beijing Space Technology Co Ltd filed Critical Sichuan Xinghe Power Space Technology Co ltd
Priority to CN202110455934.4A priority Critical patent/CN113324120A/en
Publication of CN113324120A publication Critical patent/CN113324120A/en
Pending legal-status Critical Current

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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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
    • F02K9/44—Feeding propellants
    • F02K9/56—Control
    • F02K9/58—Propellant feed valves

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

When a socket plug is in an installation state, the head of a male connector is inserted into the head of a female connector, the axial distance between the head of the male connector and the left end face of the second front part of the plug is less than or equal to the range of X1, the radial distance between the head of the female connector and a plug gland is less than or equal to the range of X2, the tops of two valve cores are in contact stress, springs of the plug and the socket are compressed, the middle part of the valve core of the socket leaves a socket valve body, and the middle part of the valve core of the plug leaves the plug valve body, so that pipelines are communicated; therefore, the axial deviation X1 and the radial deviation X2 of the socket and the plug can be allowed, the damage to the conveying control component during the disorientation vibration of the arrow body is reduced, and the normal work of the conveying control component is ensured. The valve core sealing surface is directly applied to the small arc sealing surface of the valve body, the problem that the valve cores of the plug and the socket are difficult to extrude into the O-shaped ring to cause action clamping stagnation and sealing failure during separation can be avoided, and the valve core sealing surface can be instantly realized by communicating with a cut-off pipeline, and is safe and reliable.

Description

Conveying control component of liquid rocket propellant
Technical Field
The invention relates to the technical field of rocket control, in particular to a conveying control component of a liquid rocket propellant, which is used for quickly cutting off a conveying pipeline of the liquid rocket propellant, quickly sealing the conveying pipeline and solving the problem of work failure caused by torsional damage to the conveying pipeline caused by rocket body vibration.
Background
The liquid rocket propellant transport control component is a device for realizing liquid propellant transport of a rocket. As shown in fig. 1, the liquid rocket propellant conveying control component comprises a socket and a plug, the socket comprises a socket valve body 1a, a valve cover 2, a valve core 3, a spring 4, a first O-ring 11, a second O-ring 9 and a third O-ring 10, and the plug comprises a plug valve body 1b, a valve cover 2, a valve core 3, a spring 4, a first O-ring 11 and a second O-ring 9.
In the initial state, the conveying control component of the liquid rocket propellant is arranged between the third-stage cabin section and the fourth-stage cabin section of the rocket engine and ascends along with the rocket. The flange of the socket of the conveying control part of the liquid rocket propellant is fixed on the four-stage engine, and the flange of the plug is fixed on the three-stage engine. When the plug and the socket of the conveying control component of the liquid rocket propellant are installed, the top of the valve core 3 of the plug and the top of the valve core 3 of the socket are in contact stress, the spring 4 of the plug and the spring 4 of the socket are compressed, the outer diameter of each valve core 3 is separated from the inner diameter of the second O-shaped ring 9, the pipelines of the conveying control component of the liquid rocket propellant are communicated, and a medium (the liquid propellant) can flow in from the inlet on the left side of the socket and flow out from the outlet on the right side of the plug, as shown in figure 2. The pipelines of the four-stage engine and the three-stage engine are respectively and correspondingly connected with the inlet end and the outlet end of the conveying control component of the liquid rocket propellant, so that the liquid propellant is conveyed. After the outer diameter of the valve core 3 is separated from the inner diameter of the second O-shaped ring 9, the second O-shaped ring 9 is in a free and uncompressed state.
As shown in fig. 3, when the plug of the liquid rocket propellant feeding control component is separated from the socket, under the action of spring force and medium force, the outer diameter of the valve core 3 must be squeezed into the inner diameter of the second O-shaped ring 9 to form sealing. The extrusion process, which is actually the process of deformation of the O-ring, not only needs a certain time, but also if the factors such as lubrication, environment and the like are unfavorable, action jamming is often caused, so that the valve core 3 cannot be smoothly extruded into the second O-ring 9 until the valve core is reset, and the working performance of the conveying control part of the liquid rocket propellant is affected.
In addition, in the process of conveying the medium, the socket and the plug of the conveying control component of the liquid rocket propellant are respectively fixed on the four-stage rocket body and the three-stage rocket body through flanges, and disorderly vibration exists between the three-stage rocket body and the four-stage rocket body, so that the socket and the plug of the conveying control component of the liquid rocket propellant can generate radial offset besides axial offset. Because the existing conveying control component of the liquid rocket propellant does not have the function of absorbing radial deviation, the conveying control component of the liquid rocket propellant is extremely easy to damage, thereby causing the failure of work.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a conveying control component of liquid rocket propellant, which can solve the problem that the conveying control component of the liquid rocket propellant is difficult to be jammed in action and can not be sealed due to the fact that valve cores of a plug and a socket are difficult to extrude into an O-shaped ring when being separated, can be instantly realized from being communicated with a cut-off pipeline, can allow axial deviation and radial deviation of the socket and the plug, reduces the damage to the conveying control component when an rocket body vibrates disorderly, and ensures normal operation of the conveying control component.
The technical scheme of the invention is as follows: the conveying control component of the liquid rocket propellant comprises a socket and a plug, wherein the socket comprises a valve cover (2), a spring (4), a first O-shaped ring (11), a second O-shaped ring (9) and a third O-shaped ring (10), the plug comprises a valve cover (2), a spring (4), a first O-shaped ring (11) and a second O-shaped ring (9),
the socket also comprises an improved socket valve body (8a), an improved socket valve core (3a), a convex joint (5a) and a socket gland (6a), wherein the improved socket valve body (8a) is provided with a first front part (8a1) and a first rear part (8a2), the inner diameter of the first front part is smaller than that of the first rear part, the improved socket valve core (3a) comprises a first top part (3a1), a first middle part (3a2) and a first cylinder part (3a3), the outer side wall of the first cylinder part moves in the improved socket valve body and is provided with an upper hole, the hole is communicated with the first rear part, the outer diameters of the first top part, the first middle part and the first cylinder part are sequentially increased, the first middle part and the first cylinder part are arranged in the first rear part, a spring (4) is arranged on the inner side wall of the first cylinder part, the front end face of the valve core middle part is attached to the improved socket valve body under the action of the spring, the convex joint (5a) is arranged on the right end face of the first front part, fixing the flange of the male connector (5a) at a first front part through a socket gland (6a), and inserting the first top part of the valve core into the head part of the male connector (5a) through the first front part;
the plug also comprises an improved plug valve body (8b), an improved plug valve core (3b), a female joint (5b) and a plug gland (6b), wherein the improved plug valve body (8b) is provided with a second front part (8b1) and a second rear part (8b2), the inner diameter of the second front part is smaller than that of the second rear part, the improved plug valve core (3b) comprises a second top part (3b1), a second middle part (3b2) and a second cylinder part (3b3), the outer side wall of the second cylinder part moves in the improved plug valve body and is provided with an upper hole, the hole is communicated with the second rear part, the outer diameters of the second top part, the second middle part and the second cylinder part are sequentially increased, the second middle part and the second cylinder part are arranged in the second rear part, a spring (4) is arranged on the inner side wall of the second cylinder part, the front end face of the valve core middle part is attached to the improved plug valve body under the action of the spring, the female joint (5b) is arranged on the left end face of the second front part, the flange of the female joint (5b) is fixed on the second front part through a plug gland (6b), and the second top of the valve core passes through the second front part and penetrates out of the head part of the female joint (5 b);
when the socket plug is in an installation state, the head (5a1) of the male connector is inserted into the head (5b1) of the female connector, the axial distance between the head (5a1) of the male connector and the left end surface of the second front part of the plug is less than or equal to X1, the radial distance between the head (5b1) of the female connector and the plug gland (6b) is less than or equal to X2, the tops of the two valve cores are in contact stress, the springs of the plug and the socket are compressed, the middle parts of the valve cores of the socket are separated from the socket valve body, and the middle parts of the valve cores of the plug are separated from the plug valve body, so that pipelines are communicated;
when the socket and the plug are in a separated state, under the action of spring force and medium force, the middle part of the valve core of the socket is attached to the socket valve body, and the middle part of the valve core of the plug is attached to the plug valve body, so that the pipeline is closed.
When the socket plug is in an installation state, the head of the male connector is inserted into the head of the female connector, the axial distance between the head of the male connector and the left end face of the second front part of the plug is less than or equal to X1, the radial distance between the head of the female connector and the plug gland is less than or equal to X2, the tops of the two valve cores are in contact stress, springs of the plug and the socket are compressed, the middle part of the valve core of the socket is separated from the socket valve body, and the middle part of the valve core of the plug is separated from the plug valve body, so that pipelines are communicated; therefore, the axial deviation X1 and the radial deviation X2 of the socket and the plug can be allowed, the damage to the conveying control component during the disorientation vibration of the arrow body is reduced, and the normal work of the conveying control component is ensured. In the separated state of the socket and the plug, under the action of spring force and medium force, the middle part of the valve core of the socket is attached to the socket valve body, and the middle part of the valve core of the plug is attached to the plug valve body, so that a pipeline is closed; because the end face in the middle of the valve core is sealed or separated from the valve body, the sealing surface of the valve core directly acts on the small arc sealing surface of the valve body, so that the problem that the valve core of a plug and a socket is difficult to extrude into an O-shaped ring to cause action clamping and sealing failure during separation can be avoided, and the valve core can be instantly realized after being communicated with a cut-off pipeline, and is safe and reliable.
Drawings
FIG. 1 is a schematic view of a socket plug of a prior art liquid rocket propellant delivery control member.
Fig. 2 is a schematic view showing a state in which a socket plug of a transport control part of a liquid rocket propellant of the prior art is mounted.
Fig. 3 is a schematic view of a state in which socket-plug of a feeding control part of a liquid rocket propellant of the prior art is separated.
Fig. 4 is a schematic view of a socket plug of a delivery control part of liquid rocket propellant according to the present invention.
Fig. 5 is a schematic view showing a state of installation of a socket plug of a transport control part of liquid rocket propellant according to the present invention.
Fig. 6 is a schematic view of a state in which the socket and the plug of the delivery control part of the liquid rocket propellant are separated according to the present invention.
Fig. 7 is a schematic view of a valve core structure of a transport control part of liquid rocket propellant according to the present invention.
Fig. 8 is a schematic view of the socket-plug mounting state of the transport control means for liquid rocket propellants according to the present invention, showing an axial offset X1, a radial offset X2.
Fig. 9 is a schematic view of the socket-plug mounting state of the delivery control part of liquid rocket propellant according to the present invention, showing the angular offset.
Detailed Description
As shown in fig. 4-6 and 8-9, the liquid rocket propellant delivery control component comprises a socket and a plug, wherein the socket comprises a valve cover 2, a spring 4, a first O-shaped ring 11, a second O-shaped ring 9 and a third O-shaped ring 10, the plug comprises a valve cover 2, a spring 4, a first O-shaped ring 11 and a second O-shaped ring 9,
the socket also comprises an improved socket valve body 8a, an improved socket valve core 3a, a convex joint 5a and a socket gland 6a, wherein the improved socket valve body 8a is provided with a first front part 8a1 and a first rear part 8a2, the inner diameter of the first front part is smaller than that of the first rear part, the improved socket valve core 3a comprises a first top part 3a1, a first middle part 3a2 and a first cylinder part 3a3, the outer side wall of the first cylinder part moves in the improved socket valve body and is provided with an upper hole, the hole is communicated with the first rear part, the outer diameters of the first top part, the first middle part and the first cylinder part are sequentially increased, the first middle part and the first cylinder part are arranged in the first rear part, the inner side wall of the first cylinder part is provided with a spring 4, the front end face of the middle part of the valve core is attached to the improved socket valve body under the action of the spring, the convex joint 5a is arranged on the right end face of the first front part, and the flange of the convex joint 5a is fixed on the first front part through the socket gland 6a, the first top of the valve core passes through the first front part and is inserted into the head part of the male connector 5 a;
the plug also comprises an improved plug valve body 8b, an improved plug valve core 3b, a female joint 5b and a plug press cover 6b, wherein the improved plug valve body 8b is provided with a second front part 8b1 and a second rear part 8b2, the inner diameter of the second front part is smaller than that of the second rear part, the improved plug valve core 3b comprises a second top part 3b1, a second middle part 3b2 and a second cylinder part 3b3, the outer side wall of the second cylinder part moves in the improved plug valve body and is provided with a hole upwards, the hole is communicated with the second rear part, the outer diameters of the second top part, the second middle part and the second cylinder part are sequentially increased, the second middle part and the second cylinder part are arranged in the second rear part, the inner side wall of the second cylinder part is provided with a spring 4, the front end face of the valve core middle part is attached to the improved plug valve body under the action of the spring, the left end face of the second front part is provided with the female joint 5b, and the flange of the female joint 5b is fixed on the second front part through the plug press cover 6b, the second top of the spool passes through the second front and out the head of the female connector 5 b;
when the socket plug is in an installation state, the head part 5a1 of the male connector is inserted into the head part 5b1 of the female connector, the axial distance between the head part 5a1 of the male connector and the left end surface of the second front part of the plug is less than or equal to the range of X1, the radial distance between the head part 5b1 of the female connector and the plug gland 6b is less than or equal to the range of X2, the tops of the two valve cores are in contact stress, the springs of the plug and the socket are compressed, the middle part of the valve core of the socket is separated from the socket valve body, and the middle part of the valve core of the plug is separated from the plug valve body, so that pipelines are communicated;
when the socket and the plug are in a separated state, under the action of spring force and medium force, the middle part of the valve core of the socket is attached to the socket valve body, and the middle part of the valve core of the plug is attached to the plug valve body, so that the pipeline is closed.
When the socket plug is in an installation state, the head of the male connector is inserted into the head of the female connector, the axial distance between the head of the male connector and the left end face of the second front part of the plug is less than or equal to X1, the radial distance between the head of the female connector and the plug gland is less than or equal to X2, the tops of the two valve cores are in contact stress, springs of the plug and the socket are compressed, the middle part of the valve core of the socket is separated from the socket valve body, and the middle part of the valve core of the plug is separated from the plug valve body, so that pipelines are communicated; therefore, the axial deviation X1 and the radial deviation X2 of the socket and the plug can be allowed, the damage to the conveying control component during the disorientation vibration of the arrow body is reduced, and the normal work of the conveying control component is ensured. In the separated state of the socket and the plug, under the action of spring force and medium force, the middle part of the valve core of the socket is attached to the socket valve body, and the middle part of the valve core of the plug is attached to the plug valve body, so that a pipeline is closed; because the end face in the middle of the valve core is sealed or separated from the valve body, the sealing surface of the valve core directly acts on the small arc sealing surface of the valve body, so that the problem that the valve core of a plug and a socket is difficult to extrude into an O-shaped ring to cause action clamping and sealing failure during separation can be avoided, and the valve core can be instantly realized after being communicated with a cut-off pipeline, and is safe and reliable.
Preferably, the right end face of the first top of the socket valve core is a plane, and the left end face of the second top of the plug valve core is a curved surface. Therefore, the contact area is smaller when the first top part is contacted with the second top part, the mutual abrasion is less, and the service life is prolonged.
Preferably, the flange of the male connector 5a is turned up to the right, and the first front portion 8a1 is correspondingly recessed to the left to fit. When the conveying control component of the liquid rocket propellant generates angular deviation, the matching surfaces of the socket valve body and the male connector are in spherical matching and can rotate, and certain angular deviation is allowed to occur.
Preferably, the improved socket valve body is provided with a first backward flange 8a3 at the first front part, and the right end surface of the middle part of the valve core is attached to the first backward flange under the action of a spring; the improved plug valve body is provided with a second backward flange 8a4 at the second front part, and the left end surface of the middle part of the valve core is jointed with the second backward flange under the action of a spring. The design changes the contact between the end surface of the middle part of the valve core and the valve body into the contact between the first backward flange and the small arc sealing surface of the valve body and the second backward flange, so that the sealing or the fitting is faster and more reliable.
Preferably, the middle parts of the improved socket valve core and the improved plug valve core are provided with grooves, the non-metal sealing rings 3a4 are embedded in the grooves and fixed in the grooves through the edges, and the non-metal sealing rings are attached to the first backward flange and the second backward flange under the action of the spring. The base member of case is the metal material, if direct and the backward flange contact of same metal material, and wearing and tearing are more serious and probably lead to sealed not tight, and adopt nonmetal sealing washer and the backward flange contact of metal material, then can have the buffering, alleviate wearing and tearing, sealed more reliable.
Preferably, a first O-ring 11 is provided where the valve body contacts the bonnet. Therefore, the sealing effect between the valve body and the valve cover is good.
Preferably, a second O-ring 9 is provided at the contact of the first front portion of the modified jack valve body with the male connector and a second O-ring 9 is provided at the contact of the first front portion of the modified plug valve body with the female connector. Therefore, the sealing effect of the male connector and the improved socket valve body, and the sealing effect of the female connector and the improved plug valve body are good.
Preferably, a third O-ring 10 is provided at the contact where the male connection end is inserted into the female connection end. Therefore, the sealing effect of the male connector and the female connector is good when the plug and the socket are installed.
Preferably, as shown in fig. 7, the thickness of the valve body is larger on the lower side than on the upper side, and the lower side of the outer wall of the cylinder portion is attached to the inner wall of the rear portion of the valve body. This is designed to ensure certainty in the rocket propellant channels.
The working principle of the invention is as follows:
the conveying control component of the liquid rocket propellant is arranged between the three-stage cabin section and the four-stage cabin section of the rocket engine in an initial state and ascends along with the rocket. The flange of the socket of the conveying control part of the liquid rocket propellant is fixed on the four-stage engine, and the flange of the plug is fixed on the three-stage engine. After the conveying control part of the liquid rocket propellant is installed, the plug and the socket are in an open state, the valve core is separated from the sealing surface of the valve seat, and the medium enters from the inlet on the left side of the socket, flows through the inner parts of the socket and the plug cavity and flows out from the outlet on the right side of the plug, as shown in figure 5. The pipelines of the four-stage engine and the three-stage engine are respectively and correspondingly connected with the inlet end and the outlet end of the conveying control part of the liquid rocket propellant, so that the liquid propellant is conveyed.
When the third stage and the fourth stage are separated, the socket and the plug are gradually separated, the sealing surfaces of the two valve cores are rapidly attached to the sealing surface of the valve seat respectively under the combined action of the spring force and the medium force, so that the socket and the plug are rapidly closed, and the medium in a pipeline is cut off to flow out, as shown in fig. 6.
When the three-stage engine and the four-stage engine of the rocket are separated, not only the pipeline for conveying the propellant is cut off rapidly, but also the two ends of the pipeline are sealed rapidly, the conveying control part of the liquid rocket propellant has the function of communicating the pipeline for conveying the propellant during installation, the pipeline can be cut off after separation, and the two ends of the pipeline can be sealed rapidly.
The invention can realize the functions and has the bad working conditions of relative axial deviation, radial deviation, angle deviation and the like caused by the mutual acceptance of the plug and the socket due to the vibration of the arrow body.
As shown in fig. 8, the transport control component of the liquid rocket propellant can receive the axial offset of the plug and the socket: the male connector of the receptacle mates with the female connector of the plug in a bore-axis fit that allows for an axial offset X1.
As shown in fig. 8, the feed control unit of the liquid rocket propellant can receive the radial offset of the plug and the socket: axial offset X2 is allowed to occur between the male connector outside diameter of the male connector and its gland inside bore. The force exerted by the plug gland on the female connector end face is the compression force of the O-shaped ring, the force is small, the external sealing of the medium can be achieved, and the female connector is allowed to generate radial deviation between the inner holes of the plug gland.
As shown in fig. 9, the feeding control part of the liquid rocket propellant can receive the angular offset of the plug and the socket: the matching surfaces of the socket valve body and the male connector are in spherical matching and can rotate to allow angular deviation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (9)

1. The utility model provides a transport control unit of liquid rocket propellant, includes socket and plug, and the socket includes valve gap (2), spring (4), first O shape circle (11), second O shape circle (9), third O shape circle (10), and the plug includes valve gap (2), spring (4), first O shape circle (11), second O shape circle (9), its characterized in that:
the socket further comprises a modified socket valve body (8a), a modified socket valve spool (3a), a male connector (5a), a socket gland (6a), the modified socket valve body (8a) having a first front portion (8a1) and a first rear portion (8a2), the first front portion having an inner diameter smaller than the inner diameter of the first rear portion, the modified socket valve spool (3a) comprising a first top portion (3a1), a first middle portion (3a2) and a first barrel portion (3a3),
the outer side wall of the first cylinder part moves in the improved socket valve body and is provided with a hole above, the hole is communicated with the first rear part, the outer diameters of the first top part, the first middle part and the first cylinder part are sequentially increased, the first middle part and the first cylinder part are arranged in the first rear part, the inner side wall of the first cylinder part is provided with a spring (4), the front end face of the middle part of the valve core is attached to the improved socket valve body under the action of the spring, the right end face of the first front part is provided with a convex joint (5a), the flange of the convex joint (5a) is fixed at the first front part through a socket gland (6a), and the first top part of the valve core penetrates through the first front part and is inserted into the head part of the convex joint (5 a);
the plug also comprises an improved plug valve body (8b), an improved plug valve core (3b), a female joint (5b) and a plug gland (6b), wherein the improved plug valve body (8b) is provided with a second front part (8b1) and a second rear part (8b2), the inner diameter of the second front part is smaller than that of the second rear part, the improved plug valve core (3b) comprises a second top part (3b1), a second middle part (3b2) and a second cylinder part (3b3), the outer side wall of the second cylinder part moves in the improved plug valve body and is provided with an upper hole, the hole is communicated with the second rear part, the outer diameters of the second top part, the second middle part and the second cylinder part are sequentially increased, the second middle part and the second cylinder part are arranged in the second rear part, a spring (4) is arranged on the inner side wall of the second cylinder part, the front end face of the valve core middle part is attached to the improved plug valve body under the action of the spring, the female joint (5b) is arranged on the left end face of the second front part, the flange of the female joint (5b) is fixed on the second front part through a plug gland (6b), and the second top of the valve core passes through the second front part and penetrates out of the head part of the female joint (5 b);
when the socket plug is in an installation state, the head (5a1) of the male connector is inserted into the head (5b1) of the female connector, the axial distance between the head (5a1) of the male connector and the left end surface of the second front part of the plug is less than or equal to X1, the radial distance between the head (5b1) of the female connector and the plug gland (6b) is less than or equal to X2, the tops of the two valve cores are in contact stress, the springs of the plug and the socket are compressed, the middle parts of the valve cores of the socket are separated from the socket valve body, and the middle parts of the valve cores of the plug are separated from the plug valve body, so that pipelines are communicated;
when the socket and the plug are in a separated state, under the action of spring force and medium force, the middle part of the valve core of the socket is attached to the socket valve body, and the middle part of the valve core of the plug is attached to the plug valve body, so that the pipeline is closed.
2. A transport control unit for a liquid rocket propellant as recited in claim 1, wherein: the right end face of the first top of the socket valve core is a plane, and the left end face of the second top of the plug valve core is a curved surface.
3. A transport control unit for a liquid rocket propellant according to claim 2, characterized in that: the flange of the male joint (5a) is turned up to the right, and the first front portion (8a1) is correspondingly recessed into engagement to the left.
4. A transport control unit for a liquid rocket propellant as recited in claim 1, wherein: the improved socket valve body is provided with a first backward flange (8a3) at the first front part, and the right end surface of the middle part of the valve core is attached to the first backward flange under the action of a spring; the improved plug valve body is provided with a second backward flange (8a4) at the second front part, and the left end surface of the middle part of the valve core is jointed with the second backward flange under the action of a spring.
5. A transport control unit for a liquid rocket propellant according to claim 4, characterized in that: the middle parts of the improved socket valve core and the improved plug valve core are provided with grooves, nonmetal sealing rings (3a4) are embedded in the grooves and fixed in the grooves through the edges, and the nonmetal sealing rings are attached to the first backward flange and the second backward flange under the action of springs.
6. A transport control unit for a liquid rocket propellant as recited in claim 1, wherein: a first O-shaped ring (11) is arranged at the contact position of the valve body and the valve cover.
7. A transport control unit for a liquid rocket propellant as recited in claim 6, wherein: a second O-ring (9) is arranged at the contact position of the first front part of the improved socket valve body and the male connector, and a second O-ring (9) is arranged at the contact position of the first front part of the improved plug valve body and the female connector.
8. A transport control unit for a liquid rocket propellant as recited in claim 7, wherein: a third O-ring (10) is provided at the contact where the male connection end is inserted into the female connection end.
9. A transport control unit for a liquid rocket propellant as recited in claim 1, wherein: the wall thickness of the lower side of the cylinder part of the valve core is larger than that of the upper side, and the lower side of the outer side wall of the cylinder part is attached to the inner side wall of the rear part of the valve body.
CN202110455934.4A 2021-04-26 2021-04-26 Conveying control component of liquid rocket propellant Pending CN113324120A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023043437A1 (en) * 2021-09-15 2023-03-23 Aerojet Rocketdyne, Inc. Dynamic quick connector coupling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023043437A1 (en) * 2021-09-15 2023-03-23 Aerojet Rocketdyne, Inc. Dynamic quick connector coupling

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