阅读说明：本技术 一种箭上活门、连接器、连接器对接结构及对接工艺 (Arrow valve, connector butt joint structure and butt joint process ) 是由 南铁玲 赵立乔 张亚民 辛健 张信波 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种箭上活门、连接器、连接器对接结构及对接工艺。箭上活门包含第一主体、分别与第一主体连接的第一法兰和第二法兰,第二法兰用于与箭上管路连接,第一法兰用于与连接器连接。第一法兰和第二法兰分别设置在第一主体的两端,第一法兰上设有第一定位孔和第一固定部,第一固定部设置在第一法兰的外延面。连接器的一端设有第三法兰,连接器用于通过所述第三法兰与箭上活门连接。所述第三法兰上设有第二定位孔和第二固定部,所述第二定位孔沿所述第三法兰周向表面均匀分布,所述第二定位孔与箭上活门的第一定位孔一一对应。与现有技术相比,具有设计合理,结构稳定,方便连接器的对接操作,以及有效避免低温推进剂泄漏等优点。(The invention discloses an arrow valve, a connector butt joint structure and a butt joint process. The arrow upper valve comprises a first main body, a first flange and a second flange, wherein the first flange and the second flange are respectively connected with the first main body, the second flange is used for being connected with an arrow upper pipeline, and the first flange is used for being connected with a connector. The first flange and the second flange are respectively arranged at two ends of the first main body, the first flange is provided with a first positioning hole and a first fixing part, and the first fixing part is arranged on the extension surface of the first flange. One end of the connector is provided with a third flange, and the connector is used for being connected with the arrow upper valve through the third flange. And the third flange is provided with second positioning holes and a second fixing part, the second positioning holes are uniformly distributed along the circumferential surface of the third flange, and the second positioning holes correspond to the first positioning holes of the upper valve of the arrow one to one. Compared with the prior art, the connector butt joint device has the advantages of being reasonable in design, stable in structure, convenient to butt joint operation of the connector, capable of effectively avoiding leakage of low-temperature propellant and the like.)

1. An arrow valve is characterized by comprising a first main body, a first flange and a second flange, wherein the first flange and the second flange are respectively connected with the first main body, the second flange is used for being connected with an arrow pipeline, the first flange is used for being connected with a connector, and the first flange is used for being connected with the connector,

the first main body is a channel with two communicated ends and provided with a low-temperature propellant for circulation, the first flange and the second flange are respectively arranged at two ends of the first main body,

the first flange is provided with a first positioning hole and a first fixing portion, the first positioning hole is uniformly distributed along the circumferential surface of the first flange, and the first fixing portion is arranged on the extension surface of the first flange.

2. The rocket valve according to claim 1, wherein one end of the first main body close to the first flange is a cone structure, one side of the small end of the cone structure is connected with the first main body, one side of the large end of the cone structure is connected with the second flange, and the cone structure and the first main body are designed in an integrated manner.

3. The rocket-mounted valve according to claim 1, wherein the first fixing portion and the first flange are designed to be integrally formed, the first fixing portion comprises first fixing blocks which are arranged in a pairwise symmetry manner, one end of each first fixing block is connected with the first flange, and the other end of each first fixing block extends to one side far away from the first flange.

4. The shutter on an arrow according to claim 3, characterized in that, still include the retaining member, be equipped with first fixed orifices on the first fixed block, the retaining member will through first fixed orifices with first flange with connector fixed connection, the trompil axial direction of first fixed orifices with the axis mutually perpendicular of first main part.

5. The upper shutter according to claim 4, wherein the locking member includes a rotating shaft having both ends respectively penetrating through the first fixing holes and an adjusting portion freely rotating along a surface of the rotating shaft; the adjusting part comprises an adjusting rod and an adjusting nut, a sleeve of the adjusting rod is arranged on the rotating shaft, so that the adjusting rod is configured to rotate along the circumferential direction of the rotating shaft, the adjusting nut is screwed on the adjusting rod, and the position of the adjusting nut on the adjusting rod is adjusted to enable the first flange to be tightly connected with the connector.

6. A connector is used for being connected with a ground pipeline and is characterized in that a third flange is arranged at one end of the connector, and the connector is used for being connected with a valve on an arrow through the third flange;

the third flange is provided with second positioning holes and second fixing parts, the second positioning holes are uniformly distributed along the circumferential surface of the third flange, the second fixing parts are arranged on the epitaxial surface of the third flange, and the second positioning holes correspond to the first positioning holes of the arrow upper valve one by one;

the connector is used for being equipped with the depressed part on the shell of one side of valve on the cooperation arrow, the depressed part with the second locating hole corresponds, the depressed part is used for providing the installation space of causing disconnected bolt.

7. The connector of claim 6, wherein the second fixing portion and the third flange are integrally formed, and the second fixing portion comprises two symmetrically disposed second fixing blocks, one end of the second fixing block is connected to the third flange, and the other end of the second fixing block extends away from the third flange.

8. The connector of claim 6, wherein a second fixing hole is formed in the second fixing block, the second fixing hole is used for being matched with a locking member to fixedly connect the second flange with the connector, and an opening axial direction of the second fixing hole is perpendicular to an axial line of the connector.

9. A connector butt joint structure is characterized by comprising an arrow upper valve and a connector, wherein the arrow upper valve and the connector are connected through a break-causing bolt,

the rocket upper valve comprises a first main body, a first flange and a second flange, wherein the first flange and the second flange are connected with the first main body;

the first main body is provided with a channel which is communicated with two ends and internally provided with a low-temperature propellant for circulation, and the first flange and the second flange are respectively arranged at two ends of the first main body;

the first flange is provided with first positioning holes and first fixing parts, the first positioning holes are uniformly distributed along the circumferential surface of the first flange, and the first fixing parts are connected with the first flange along the epitaxial surface of the first flange;

the connector is used for being connected with a ground pipeline, a third flange is arranged at one end of the connector, and the connector is used for being connected with the upper rocket valve through the third flange;

the third flange is provided with second positioning holes and second fixing parts, the second positioning holes are uniformly distributed along the circumferential surface of the third flange, the second fixing parts are arranged on the epitaxial surface of the third flange, and the second positioning holes correspond to the first positioning holes of the arrow upper valve one by one;

the connector is used for being equipped with the depressed part on the shell of one side of valve on the cooperation arrow, the depressed part with the second locating hole corresponds, the depressed part is used for providing the installation space who causes disconnected bolt, it runs through in proper order to cause disconnected bolt first locating hole with the second locating hole is in order to realize valve on the arrow with the fixed connection of connector.

10. A connector butt joint process is characterized in that,

s1, respectively providing a rocket valve, an elastic sealing piece and a connector,

the rocket upper valve comprises a first main body, a first flange and a second flange, wherein the first flange and the second flange are respectively connected with the first main body, the second flange is used for being connected with a rocket upper pipeline, the first flange and the second flange are respectively arranged at two ends of the first main body, a first positioning hole and a first fixing part are arranged on the first flange, the first positioning hole is uniformly distributed along the circumferential surface of the first flange, and the first fixing part is arranged on the epitaxial surface of the first flange;

the connector is used for being connected with a ground pipeline, a third flange is arranged at one end of the connector, a second positioning hole and a second fixing part are arranged on the third flange, the second positioning hole is uniformly distributed along the circumferential surface of the third flange, the second fixing part is arranged on the epitaxial surface of the third flange, and the second positioning hole corresponds to the first positioning hole of the arrow upper valve one by one;

s2, enabling the arrow valve and the connector to be close to each other along the axial direction of the first main body, and arranging an elastic sealing piece between the arrow valve and the connector to seal the contact part of the arrow valve and the connector;

s3, adjusting the butting position of the arrow upper valve and the connector along the circumferential direction of the arrow upper valve, so that the axis of the first positioning hole on the first flange and the axis of the second positioning hole on the third flange are positioned on the same straight line;

s4, sequentially penetrating through the first positioning hole and the second positioning hole through a positioning structure to limit the butt joint of the arrow upper valve and the connector in the circumferential direction;

s5, matching the first fixing part and the second fixing part through locking pieces respectively to enable the locking pieces to overcome the elasticity of the elastic sealing pieces and complete the butt joint of the arrow shutter and the connector;

s6, taking down the positioning structure, and using a breaking bolt to sequentially penetrate through the first positioning hole and the second positioning hole to fixedly connect the arrow upper valve and the connector;

and S7, adjusting the locking piece to unlock the locking piece, and further completing the manual operation of connecting the arrow upper valve with the connector.

Technical Field

The invention relates to the field of liquid rockets, in particular to a rocket valve, a connector butt joint structure and a butt joint process.

Background

With the rapid development of the aerospace industry, all the technologies related to the rocket field also realize the rapid advance. Rockets are currently the primary vehicles for launching satellites into space, and therefore, the continued reduction of rocket manufacturing and launch costs is a pursuit goal of large commercial space companies.

The low-temperature propellant filling and discharging connector is used for conveying liquid propellant media such as liquid hydrogen, liquid oxygen and liquid methane to the rocket, and can realize the functions of connecting, sealing, dropping and the like of the connector and a rocket liquid path interface. Before the rocket takes off, the connector needs to be dropped off in advance, and if the rocket delays launching, the connector needs to be butted again. In order to improve reliability, a connector falling test is required before rocket launching so as to judge whether the connector can fall off smoothly, and after the falling test is finished, the connector needs to be butted again. Under above two kinds of circumstances, all dock under rocket erects the state, operating platform height is high, and the platform area is little, consequently, needs the butt joint easy operation of connector, and the butt joint power is little, satisfies manual butt joint.

In order to avoid leakage of the low-temperature propellant, two seals are arranged on the butt joint face between the connector and the arrow valve, but when the connector is in butt joint with the arrow valve, the friction resistance of the two seals needs to be overcome, and manual butt joint cannot be adopted due to large resistance. At present, the common practice is to detach the connector from the cryogenic pipeline, detach the rocket valve from the rocket, butt the connector and the rocket valve on a press machine, then butt the rocket valve part and the rocket, and butt the connector part and the cryogenic pipeline, so that the workload of detachment and installation is large.

The breaking type connector is connected with the valve on the arrow by a breaking bolt, and the diameter of a breaking part is very small so as to ensure reliable breaking. When assembling the breaking bolt, external force or unbalance loading cannot be applied to the breaking bolt, so that the breaking part is prevented from being broken by the external force, and the operation difficulty is increased. In addition, the two sealing parts arranged on the butt joint surface between the connector and the arrow valve are long in matching surface, when the connector is in butt joint with the arrow valve, the butt joint surface is often inclined, so that a sealing surface and a sealing piece are scratched, sealing is not strict, and further, the leakage phenomenon of low-temperature propellant occurs.

Therefore, how to provide a structure, have reasonable in design, stable in structure, convenient operation can effectively avoid low temperature propellant to leak, is the problem that will solve at present.

Disclosure of Invention

The invention aims to provide an arrow valve, a connector butt joint structure and a butt joint process, and the arrow valve butt joint structure has the advantages of reasonable design, stable structure, convenience in operation, capability of effectively avoiding leakage of low-temperature propellant and the like.

In order to achieve the purpose, the invention provides the following technical scheme:

an arrow valve comprises a first main body, a first flange and a second flange, wherein the first flange and the second flange are respectively connected with the first main body, the second flange is used for being connected with an arrow pipeline, the first flange is used for being connected with a connector, and the first flange is used for being connected with the connector,

the first main body is a channel with two communicated ends and provided with a low-temperature propellant for circulation, the first flange and the second flange are respectively arranged at two ends of the first main body,

the first flange is provided with a first positioning hole and a first fixing portion, the first positioning hole is uniformly distributed along the circumferential surface of the first flange, and the first fixing portion is arranged on the extension surface of the first flange.

In an embodiment, one end of the first main body close to the first flange is a cone structure, one side of a small end of the cone structure is connected with the first main body, one side of a large end of the cone structure is connected with the second flange, and the cone structure and the first main body are designed to be integrally formed.

In an embodiment, the first fixing portion and the first flange are integrally formed, and the first fixing portion includes two first fixing blocks symmetrically disposed, one end of each first fixing block is connected to the first flange, and the other end of each first fixing block extends to a side away from the first flange.

In an embodiment, the connector further comprises a locking member, a first fixing hole is formed in the first fixing block, the locking member is used for fixedly connecting the first flange with the connector through the first fixing hole, and the opening axial direction of the first fixing hole is perpendicular to the axis of the first main body.

In one embodiment, the locking member includes a rotating shaft having two ends respectively penetrating through the first fixing hole and an adjusting portion freely rotating along the surface of the rotating shaft; the adjusting part comprises an adjusting rod and an adjusting nut, a sleeve of the adjusting rod is arranged on the rotating shaft, so that the adjusting rod is configured to rotate along the circumferential direction of the rotating shaft, the adjusting nut is screwed on the adjusting rod, and the position of the adjusting nut on the adjusting rod is adjusted to enable the first flange to be tightly connected with the connector.

The invention further provides a connector, which is used for being connected with a ground pipeline, one end of the connector is provided with a third flange, and the connector is used for being connected with a valve on an arrow through the third flange;

the third flange is provided with second positioning holes and second fixing parts, the second positioning holes are uniformly distributed along the circumferential surface of the third flange, the second fixing parts are arranged on the epitaxial surface of the third flange, and the second positioning holes correspond to the first positioning holes of the arrow upper valve one by one;

the connector is used for being equipped with the depressed part on the shell of one side of valve on the cooperation arrow, the depressed part with the second locating hole corresponds, the depressed part is used for providing the installation space of causing disconnected bolt.

In an embodiment, the second fixing portion and the third flange are integrally formed, and the second fixing portion includes two second fixing blocks symmetrically disposed in pairs, one end of each second fixing block is connected to the third flange, and the other end of each second fixing block extends to a side away from the third flange.

In an embodiment, a second fixing hole is formed in the second fixing block, the second fixing hole is used for being matched with a locking piece to fixedly connect the second flange with the connector, and the opening axial direction of the second fixing hole is perpendicular to the axial direction of the connector.

Yet another aspect of the present invention provides a connector docking structure comprising an arrow upper shutter and a connector, the arrow upper shutter and the connector being connected by a break-causing bolt, wherein,

the rocket upper valve comprises a first main body, a first flange and a second flange, wherein the first flange and the second flange are connected with the first main body;

the first main body is provided with a channel which is communicated with two ends and internally provided with a low-temperature propellant for circulation, and the first flange and the second flange are respectively arranged at two ends of the first main body;

the first flange is provided with first positioning holes and first fixing parts, the first positioning holes are uniformly distributed along the circumferential surface of the first flange, and the first fixing parts are connected with the first flange along the epitaxial surface of the first flange;

the connector is used for being connected with a ground pipeline, a third flange is arranged at one end of the connector, and the connector is used for being connected with the upper rocket valve through the third flange;

the third flange is provided with second positioning holes and second fixing parts, the second positioning holes are uniformly distributed along the circumferential surface of the third flange, the second fixing parts are arranged on the epitaxial surface of the third flange, and the second positioning holes correspond to the first positioning holes of the arrow upper valve one by one;

the connector is used for being equipped with the depressed part on the shell of one side of valve on the cooperation arrow, the depressed part with the second locating hole corresponds, the depressed part is used for providing the installation space who causes disconnected bolt, it runs through in proper order to cause disconnected bolt first locating hole with the second locating hole has been realized valve on the arrow with connector fixed connection.

In another aspect, the invention provides a connector butt joint process, which includes the following steps:

s1, respectively providing a rocket valve, an elastic sealing piece and a connector,

the rocket upper valve comprises a first main body, a first flange and a second flange, wherein the first flange and the second flange are respectively connected with the first main body, the second flange is used for being connected with a rocket upper pipeline, the first flange and the second flange are respectively arranged at two ends of the first main body, a first positioning hole and a first fixing part are arranged on the first flange, the first positioning hole is uniformly distributed along the circumferential surface of the first flange, and the first fixing part is arranged on the epitaxial surface of the first flange;

the connector is used for being connected with a ground pipeline, a third flange is arranged at one end of the connector, a second positioning hole and a second fixing part are arranged on the third flange, the second positioning hole is uniformly distributed along the circumferential surface of the third flange, the second fixing part is arranged on the epitaxial surface of the third flange, and the second positioning hole corresponds to the first positioning hole of the arrow upper valve one by one;

s2, enabling the arrow valve and the connector to be close to each other along the axial direction of the first main body, and arranging an elastic sealing piece between the arrow valve and the connector to seal the contact part of the arrow valve and the connector;

s3, adjusting the butting position of the arrow upper valve and the connector along the circumferential direction of the arrow upper valve, so that the axis of the first positioning hole on the first flange and the axis of the second positioning hole on the third flange are positioned on the same straight line;

s4, sequentially penetrating through the first positioning hole and the second positioning hole through a positioning structure to limit the butt joint of the arrow upper valve and the connector in the circumferential direction;

s5, matching the first fixing part and the second fixing part through locking pieces respectively to enable the locking pieces to overcome the elasticity of the elastic sealing pieces and complete the butt joint of the arrow shutter and the connector;

s6, taking down the positioning structure, and using a breaking bolt to sequentially penetrate through the first positioning hole and the second positioning hole to fixedly connect the arrow upper valve and the connector;

and S7, adjusting the locking piece to unlock the locking piece, and further completing the manual operation of connecting the arrow upper valve with the connector.

Compared with the prior art, the embodiment of the invention has at least one of the following advantages:

first, through be equipped with first locating hole on first flange and be equipped with the second locating hole on the third flange, and the second locating hole and the first locating hole one-to-one of valve on the arrow can run through second locating hole and first locating hole (second locating hole and first locating hole are equivalent to the guiding hole, the guide post is played to location structure) through location structure to avoid first flange and third flange to take place circumferential movement after the butt joint, and then make things convenient for valve and connector on the arrow to be connected.

Through being equipped with first fixed part on first flange and being equipped with the second fixed part on the third flange, the retaining member is connected first flange and connector through first fixed orifices, and then makes on guaranteeing the arrow valve and connector connection inseparable, and is fixed more firmly. After retaining member locking arrow goes up valve and connector, through changing location structure into and sending disconnected bolt, later manual demolish the retaining member, accomplish on the arrow valve and connector connection, whole process only need manual accomplish can, and easy operation, improve work efficiency.

Second, through the setting of first locating hole along first flange circumference surface evenly distributed and second locating hole along third flange circumference surface evenly distributed, not only can make things convenient for the butt joint of interface and connector on the arrow, reduce the circumferential movement each other, can also make the position atress that guarantees valve and connector contact on the arrow even (cause disconnected bolt to run through first locating hole and second locating hole and be connected first flange and third flange), and then avoid the butt joint face to take place the skew phenomenon, can avoid the butt joint face to damage sealed face and sealing member, thereby make sealed tight, reduce the leakage of low temperature propellant.

And thirdly, the locking piece comprises a rotating shaft with two ends respectively penetrating through the first fixing hole and an adjusting part freely rotating along the surface of the rotating shaft, the adjusting rod is configured to be rotatable along the circumferential direction of the rotating shaft (so that the adjusting rod is positioned in a space between the first fixing block and the second fixing block which are symmetrically arranged in pairs), and the first flange is tightly connected with the connector by adjusting the position of the adjusting nut on the adjusting rod.

The whole structure has the advantages of reasonable design, stable structure, convenient operation, effective avoidance of low-temperature propellant leakage and the like.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

FIG. 1 is a schematic view of the connection of the rocket interface and the connector through the positioning structure;

FIG. 2 is a schematic structural diagram of the connection between the rocket interface and the connector through the locking piece;

FIG. 3 is a schematic view of the connection, detachment and positioning structure of the arrow upper interface and the connector and the structure of the bolt with break;

FIG. 4 is a schematic structural diagram of the connector and the connector for connecting and removing the locking member;

FIG. 5 is a front view of the arrow-top interface of the present invention;

fig. 6 is a top view of a third flange of the present invention.

Description of reference numerals:

1 first body 2 first flange

3 second flange 4 first positioning hole

5 first fixing part 6 locking piece

7 second positioning hole 8 second fixing part

9 cause disconnected bolt 10 location structure

11 third flange 12 connector

Detailed Description

For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the invention, reference will now be made to the drawings and detailed description, wherein there are shown in the drawings and described in detail, various modifications of the embodiments described herein, and other embodiments of the invention will be apparent to those skilled in the art.

The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.

As used herein, the terms "first," "second," …, etc., do not denote any order or sequence, nor are they used to limit the present invention, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.

With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.

As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.

As used herein, "and/or" includes any and all combinations of the described items.

As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. Generally, the range of slight variations or errors modified by such terms may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.

Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.

Referring to fig. 1, 2, 5 and 6, an embodiment of the present invention provides an arrow valve, including a first body 1, a first flange 2 and a second flange 3 respectively connected to the first body 1, the second flange 3 being used for connecting to an arrow pipeline, and the first flange 2 being used for connecting to a connector 12. The first main body 1 is provided with a channel for the circulation of low-temperature propellant inside the two ends of the first main body, and the first flange 2 and the second flange 3 are respectively arranged at the two ends of the first main body 1. Be equipped with first locating hole 4 and first fixed part 5 on first flange 2, first locating hole 4 is along 2 circumferential surface evenly distributed of first flange, and first fixed part 5 sets up the face of extending at first flange 2.

It should be noted that, in order to facilitate the communication between the first body 1 and the channel of the connector 12 (in some application scenarios, the channel diameter of the first body 1 is smaller than the channel diameter of the connector 12), for example, one end of the first body 1 near the first flange 2 is a cone structure, a small end side of the cone structure is connected with the first body 1, a large end side of the cone structure is connected with the second flange 3, and an inner diameter of the cone is matched with an inner diameter of the channel of the connector 12. In order to ensure that the cone structure is tightly connected with the first body 1 and firmly fixed, for example, the cone structure and the first body 1 may be welded. In the present embodiment, in order to make the cone structure and the first body 1 connected more tightly and fixed more firmly, for example, the cone structure and the first body may be integrally formed, and the process is not described herein.

In addition, to facilitate the delivery of the cryogenic propellant, the first body 1 is, for example, cylindrical in shape. In order to avoid circumferential rotation of the first body 1 and the connector 12, the number of the first positioning holes 4 is, for example, 2, 3 or 4. Through a large number of experimental simulations, assuming that the number of the first positioning holes 4 is a, when a is satisfied to be greater than or equal to 3, the circumferential rotation between the first body 1 and the connector 12 can be reduced, which facilitates the positioning of the positioning structure 10 (positioning pin).

It should be noted that, in the present embodiment, in order to make the first fixing portion 5 and the first flange 2 tightly connected, the fixing is firm, for example, the first fixing portion 5 and the first flange 2 are designed to be integrally formed. For convenience of fixing the locking part 6, circumferential movement of the locking part 6 is avoided, for example, the first fixing part 5 comprises first fixing blocks arranged in a pairwise symmetry manner (the space between the two first fixing blocks plays a role in a fixing groove, so that the adjusting rod of the locking part is located therein, circumferential movement can be avoided), one end of each first fixing block is connected with the first flange 2, and the other end of each first fixing block extends to one side of the first flange 2.

In order to ensure the stable structure of the first fixing block, for example, the first fixing block has a rectangular parallelepiped shape. The shape of the first fixing block in this embodiment is illustrated as a rectangular parallelepiped, but in practical applications, the first fixing block may also be a cube or other structure protruding from the outer extension surface of the flange, which is not illustrated herein by way of example. For convenience of connection between the first fixing block and the first flange 2, the first fixing block and the first flange 2 are connected tightly, for example, a curved surface matched with the first flange is arranged on the connection side of the first fixing block and the first flange 2. In addition, in order to avoid the developer from being scratched by the first fixing block during the installation of the connector, for example, an arc chamfer may be provided on the side of the first fixing block away from the first flange 2.

In addition, the arrow upper valve further comprises a locking piece 6, two first fixing blocks which are oppositely arranged are respectively provided with a first fixing hole, a rod-shaped part of the locking piece penetrates through the two first fixing holes, the other part of the locking piece is sleeved on the rod-shaped part and can be rotatably arranged, and the first flange 2 and the connector 12 are fixedly connected and separated through rotation of the other part of the locking piece around the rod-shaped part. To facilitate the adjustment of the locking member, for example, the axial direction of the opening of the first fixing hole is perpendicular to the axis of the first body 1, so that the locking member can be rotated relative to the first body 1 to adjust the tightness of the connection between the first flange 2 and the connector 12.

Specifically, in the case where two fixing blocks are disposed opposite to each other on the extension surface of the first flange 2 (for example, two sets of fixing blocks are disposed on the extension surface, and each set of fixing blocks includes two fixing blocks disposed facing each other), the locking member 6 includes a rotating shaft having two ends respectively penetrating through the two first fixing holes and an adjusting portion freely rotating along the surface of the rotating shaft (in the circumferential direction of the rotating shaft). The adjusting part comprises an adjusting rod and an adjusting nut, a sleeve of the adjusting rod is arranged on the rotating shaft, the adjusting rod is configured to be rotatable along the circumferential direction of the rotating shaft, the adjusting nut is screwed on the adjusting rod, and the tightness between the first flange 2 and the connector 12 is adjusted by adjusting the position of the adjusting nut on the adjusting rod (in the process, the adjusting nut can overcome the elasticity of the sealing piece between the interface and the connector on the arrow, so that the interface and the connector on the arrow are close to each other and are tightly attached) to the adjusting rod.

In a further aspect of the invention, a connector is provided, as shown in fig. 1, 4, 5 and 6 for connection to a surface pipeline, using the connector 12. One end of the connector 12 is provided with a third flange 11, and the connector 12 is used for being connected with the rocket valve through the third flange 11. The third flange 11 is provided with second positioning holes 7 and second fixing portions 8, the second positioning holes 7 are uniformly distributed along the circumferential surface of the third flange 11, the second fixing portions 8 are arranged on the extension surface of the third flange 11, and the second positioning holes 7 correspond to the first positioning holes 4 of the arrow upper valve one by one. The connector 12 is provided with a recessed portion on the housing on one side for matching with the arrow upper valve, the recessed portion corresponds to the second positioning hole 7, and the recessed portion is used for providing an installation space for the break bolt 9.

It should be noted that, in order to make the second fixing portion 8 and the third flange 11 connected more tightly and firmly, for example, the second fixing portion 8 and the third flange 11 are designed to be integrally formed. For example, along the periphery of the third flange 11, a fixing structure formed by two pairs of second fixing portions may be symmetrically disposed, each pair of second fixing portions includes two pairs of second fixing blocks disposed opposite to each other, (a space between the two second fixing blocks serves as a fixing groove, so that the adjusting rod of the locking member 6 is located therein, and circumferential movement may be prevented from occurring), one end of the second fixing block is connected to the third flange 11, and the other end extends to a side away from the third flange 11.

It should be noted in particular that, in order to facilitate the installation of the locking member 6, for example, each of each pair of second fixing blocks is provided with a second fixing hole (when the first fixing hole is unstable, the rotating shaft of the locking member may also extend through the second fixing hole), the second fixing hole is used for cooperating with the locking member 6 to fixedly connect the second flange 3 with the connector 12, and the opening axial direction of the second fixing hole is perpendicular to the axial direction of the connector 12.

Referring to fig. 1, 2, 3, 4, 5 and 6, a further aspect of the present invention provides a connector docking structure including a rocket door and a connector, wherein the rocket door and the connector are connected by a break bolt. The arrow upper valve comprises a first main body, a first flange and a second flange, the first flange and the second flange are connected with the first main body, the first flange is connected with the connector, and the second flange is connected with the arrow upper pipeline.

The first main body 1 is provided with a channel for the circulation of low-temperature propellant inside the two ends of the first main body, and the first flange 2 and the second flange 3 are respectively arranged at the two ends of the first main body 1.

Be equipped with first locating hole 4 and first fixed part 5 on the first flange 2, first locating hole 4 is along 2 circumferential surface evenly distributed of first flange, and first fixed part 5 is connected with first flange 2 along the epitaxial face of first flange 2.

The connector 12 is used for being connected with a ground pipeline, a third flange 11 is arranged at one end of the connector 12, and the connector 12 is used for being connected with a valve on the rocket through the third flange 11.

The third flange 11 is provided with second positioning holes 7 and second fixing portions 8, the second positioning holes 7 are uniformly distributed along the circumferential surface of the third flange 11, the second fixing portions 8 are arranged on the extension surface of the third flange 11, and the second positioning holes 7 correspond to the first positioning holes 4 of the arrow upper valve one by one.

The connector is used for being equipped with the depressed part on the shell of one side of valve on the cooperation arrow, and the depressed part corresponds with the second locating hole, and the depressed part is used for providing the installation space who causes disconnected bolt, causes disconnected bolt 9 to run through first locating hole 4 and second locating hole 7 in order to realize valve on the arrow and connector fixed connection in proper order.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, a further aspect of the present invention provides a connector mating process, which includes the following steps:

step one, respectively providing an arrow valve, an elastic sealing element and a connector.

Valve contains first main part 1 on the arrow, first flange 2 and second flange 3 of being connected with first main part 1 respectively, second flange 3 be used for with arrow top tube way be connected, first flange 2 and second flange 3 set up respectively at the both ends of first main part 1, be equipped with first locating hole 4 and first fixed part 5 on first flange 2, 2 circumference surface evenly distributed of first flange is followed to first locating hole 4, first fixed part 5 sets up the face of extending at first flange 2.

The connector 12 is used for being connected with a ground pipeline, a third flange 11 is arranged at one end of the connector 12, a second positioning hole 7 and a second fixing portion 8 are arranged on the third flange 11, the second positioning hole 7 is uniformly distributed along the circumferential surface of the third flange 11, the second fixing portion 8 is arranged on the extension surface of the third flange 11, and the second positioning hole 7 corresponds to the first positioning hole 4 of the valve on the arrow one to one.

And step two, enabling the rocket valve and the connector 12 to be close to each other along the axial direction of the first main body 1, and arranging an elastic sealing piece between the rocket valve and the connector 12 to seal the contact part of the rocket valve and the connector.

And step three, adjusting the butting position of the rocket upper valve and the connector along the circumferential direction of the rocket upper valve, so that the axis of the first positioning hole 4 on the first flange and the axis of the second positioning hole 7 on the third flange 11 are positioned on the same straight line.

And step four, sequentially penetrating through the first positioning hole 4 and the second positioning hole 7 through the positioning structure so as to limit the butt joint of the valve on the arrow and the connector in the circumferential direction. In order to avoid circumferential rotation of the positioning structure, for example, the first positioning hole 4 and the second positioning hole 7 are designed to be long hole structures (at least a group of extension lines of symmetrical sides in the long hole structures are parallel to each other), and the parts of the positioning structure, which are close to the first positioning hole and the second positioning hole, are designed to be matched with the long hole structures, so that circumferential rotation of the positioning structure is avoided, and meanwhile, the butt joint of a valve and a connector on an arrow is limited conveniently. In addition, in order to avoid the positioning structure to break away from the positioning hole, for example, a nut can be arranged at one end of the positioning structure, the nut is used for locking one end of the positioning structure, and the positioning structure can be prevented from falling off due to axial movement along the first positioning hole.

And step five, the locking piece 6 is matched with the first fixing part 5 and the second fixing part 8 respectively, so that the locking piece 6 overcomes the elasticity of the elastic sealing piece, and the butt joint of the arrow upper valve and the connector is completed.

The shaft of the locking element 6 is arranged through two first fixing holes arranged in each other, and the other part is sleeved on the shaft and can rotate, and the other part rotates around the shaft to fixedly connect and disconnect the first flange 2 and the connector 12. For example, in the case where two fixing blocks are oppositely disposed on the extension surface of the first flange 2 (for example, two sets of fixing blocks are disposed on the extension surface, and each set of fixing blocks includes two fixing blocks disposed facing each other), the locking member 6 includes a rotating shaft having two ends respectively penetrating through the two first fixing holes and an adjusting portion freely rotating along the surface of the rotating shaft (in the circumferential direction of the rotating shaft). The adjusting part comprises an adjusting rod and an adjusting nut, one end of the adjusting rod (the other part) is sleeved on the rotating shaft (the rod-shaped part), so that the adjusting rod is configured to be rotatable along the circumferential direction of the rotating shaft (during installation, one end of the rotating shaft penetrates through one of the first fixing holes and then continuously penetrates through the adjusting rod, and then penetrates through the other first fixing hole, so that one end of the adjusting rod can freely rotate around the surface of the rotating shaft along the rotating shaft, in the process of locking the arrow upper valve and the connector through the locking part 6, the other end of the adjusting rod approaches to the center of the connector through rotation, and finally is tightly attached to the extension surface of the third flange (the adjusting rod is positioned in a space between the two fixing blocks which are arranged oppositely), then the adjusting nut can be screwed on the adjusting rod, the position of the adjusting nut on the adjusting rod is adjusted to ensure that the first flange 2 is tightly connected with the connector 12 (in the process, the adjusting nut can overcome the elasticity of the elastic sealing element between the arrow-mounted interface and the connector, so that the arrow-mounted interface and the connector are close to each other and tightly attached). In this technology, the quantity of first fixed part, second fixed part 8 and retaining member 6 is 3, when first flange is connected with the third method, can adjust adjusting nut position on adjusting the pole simultaneously to make the inseparable of being connected of first flange 2 and connector 12, and then can guarantee more evenly to the elastic sealing spare atress, avoid elastic sealing spare to appear sliding (to one side skew, pressure increase between first flange 2 and the connector 12, cause elastic sealing spare's damage, and then the influence is sealed).

And step six, taking down the positioning structure, and applying a breaking bolt 9 (when pressure is applied to the axial direction, the structure breaks after reaching the pressure bearing limit) to sequentially penetrate through the first positioning hole and the second positioning hole so as to fixedly connect the arrow upper valve and the connector (when the connector is required to be separated from the arrow upper interface, the breaking bolt is broken by pulling the connector, and then the connector is separated from the arrow upper interface).

And step seven, after the end bolt is installed, the locking piece 6 is adjusted to be unlocked (the whole locking piece is taken down, namely the adjusting nut is screwed to be separated from the adjusting rod, the rotating shaft is taken out from the first fixing hole, and the adjusting rod falls off), so that the manual operation of connecting the valve on the arrow and the connector is completed.

Compared with the prior art, the embodiment of the invention has at least one of the following advantages:

first, through be equipped with first locating hole 4 on first flange 2 and be equipped with second locating hole 7 on third flange 11, and second locating hole 7 and the first locating hole 4 one-to-one of valve on the arrow, can run through second locating hole 7 and first locating hole 4 (second locating hole and first locating hole are equivalent to the guiding hole, make location structure run through) through location structure, when first flange 2 and the contact surface contact of third flange 11, in order to avoid first flange 2 and third flange 11 to take place circumferential movement after the butt joint, reduce the sealing member and damage, and then make things convenient for valve and connector 12 to be connected on the arrow, avoid low temperature propellant to leak from both gaps.

Through being equipped with first fixed part 5 on first flange 2 and being equipped with second fixed part 8 on third flange 11, retaining member 6 is connected first flange and connector 12 through first fixed orifices, and then makes on guaranteeing the arrow valve and connector 12 connect closely, and is fixed more firmly. After retaining member 6 locks valve and connector on the arrow, can change into the bolt 9 that causes absolutely with location structure, later be in with the retaining member and demolish, and then manual completion arrow valve and connector 12 are connected, whole process only need manual accomplish can, and easy operation, improve work efficiency.

Secondly, through the setting that first locating hole 4 along 2 circumference surface evenly distributed of first flange and second locating hole 7 along 111 circumference surface evenly distributed of third flange, not only can make things convenient for the butt joint of interface and connector 12 on the arrow, reduce the circumferential displacement between each other, can also make the position atress that guarantees valve and connector 12 contact on the arrow even (cause disconnected bolt 9 to run through first locating hole 4 and second locating hole 7 and connect first flange 2 and third flange 11), and then can avoid the butt joint face to take place the skew phenomenon, can avoid the butt joint face to damage sealed face and sealing member, thereby make sealed rigorously, reduce the leakage of low temperature propellant in the propellant filling process.

Thirdly, retaining member 6 contains both ends and runs through the pivot of first fixed orifices respectively and along the surperficial free rotation's of pivot regulation portion, adjusts the pole configuration and is rotatable along the circumferential direction of pivot (make to adjust the pole and be in every pair in the space between the first fixed block that sets up facing each other and the second fixed block), can conveniently carry out locking operation to valve on connector and the arrow, and can be connected inseparable degree through adjusting first flange of adjusting nut position change on adjusting the pole.

The whole structure has the advantages of reasonable design, stable structure, convenient operation, effective avoidance of low-temperature propellant leakage and the like.

The foregoing is merely an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.