A test device based on stainless steel rocket-to-ground connector

Abstract

The present invention discloses a test device based on a stainless steel rocket-to-ground connector, and relates to the technical field of the test of the rocket-to-ground connector. The test device is based on a stainless steel rocket-to-ground connector, and a support is installed inside the test bracket, and the support is used to install a variable diameter pipe; a docking panel is installed on the top of the test bracket, and the docking panel is used to install the arrow-to-ground connector connected to the top of the variable diameter pipe, and the bottom of the variable diameter pipe is used to connect the ground pipeline. The variable diameter pipe is installed on the support, which can provide a basis for the liquid supply of the arrow-to-ground connector. The arrow-to-ground connector is installed on the docking panel. By fixing the docking panel with the test bracket, the arrow-to-ground connector pipeline connection strength test, the arrow-to-ground connector pipeline normal temperature air tightness test and the arrow-to-ground connector pipeline low temperature air tightness test can be performed, and the docking panel and the test bracket are unlocked, and the pull-out force test can be performed, which meets various test items and does not need to re-produce the corresponding model test device.

Description

Technical Field

[0001] The invention relates to the technical field of arrow-to-ground connector testing, in particular to an arrow-to-ground connector testing device based on a stainless steel rocket. Background Art

[0002] The arrow-to-ground connector is a connecting device between the rocket and the ground filling and air supply system. It is mainly used to provide cryogenic propellant and gas for various projects on the rocket. Corresponding tests are required before formal delivery, including but not limited to arrow-to-ground connector pipeline connection strength test, arrow-to-ground connector pipeline normal temperature air tightness test and arrow-to-ground connector pipeline low temperature air tightness test and pull-off force test.

[0003] However, existing experimental devices are difficult to be compatible with different types of experimental projects and have low compatibility, which results in the need to re-produce corresponding types of test devices when testing different types of connectors. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a test device based on a stainless steel rocket-to-ground connector, which solves the problem that the prior experimental devices are difficult to be compatible with different types of experimental projects and have low compatibility.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a stainless steel rocket-to-ground connector test device, comprising a test bracket, a support member is installed inside the test bracket, and the support member is used to install a reducing pipe; a docking panel is installed on the top of the test bracket, and the docking panel is used to install a rocket-to-ground connector connected to the top of the reducing pipe, and the bottom of the reducing pipe is used to connect to the ground pipeline.

[0006] Furthermore, the reducer pipe includes a reducer body, an upper flange and a lower flange, the upper flange is fixedly connected to the top of the reducer body, and the lower flange is fixedly connected to the bottom of the reducer body; the upper flange is used to connect to the arrow-to-ground connector, and the lower flange is used to connect to the ground pipeline.

[0007] Furthermore, two limiting rings are fixedly connected to the reducer tube body, and the two limiting rings are used to be connected to the support member.

[0008] Furthermore, the test bracket includes a frame body and a connecting rod, the connecting rod is fixedly connected to one side of the frame body, and the connecting rod is connected to the support member; a plurality of panel mounting holes are opened on the top surface of the frame body, and a plurality of connecting holes are opened on the surface of the docking panel, and the panel mounting holes correspond to the connecting holes one by one.

[0009] Furthermore, the connecting rods are provided in plurality and are arranged in an array from bottom to top on one side of the test bracket, and a support member mounting hole is provided on the surface of each connecting rod, and the support member is mounted on the surface of the connecting rod through the support member mounting hole.

[0010] Furthermore, the support member includes an L-shaped plate, a surface of the L-shaped plate is provided with bolt mounting holes, the bolt mounting holes are connected to the support member mounting holes, and are used to install and fix the support member; a support mounting hole is provided on the top of the L-shaped plate, and the inner diameter of the support mounting hole is adapted to the outer diameter of the reducer body.

[0011] Furthermore, a support rod is fixedly connected to the inner side of the L-shaped plate, and the shape of the bolt mounting hole is elliptical.

[0012] Furthermore, an arrow-to-ground connector mounting hole is provided on the surface of the docking panel, and the arrow-to-ground connector is fixedly connected to the docking panel through the arrow-to-ground connector mounting hole.

[0013] Furthermore, a handle is connected to the top of the docking panel, and the handle is used to connect to the dynamometer.

[0014] Furthermore, a ground fixing installation hole is opened at the bottom of the frame, and the ground fixing installation hole is used to fix the frame to the ground.

[0015] The present invention has the following beneficial effects:

[0016] The test device for the rocket-to-ground connector based on stainless steel, installs the reducer pipe on the support through the support and the docking panel, which can provide a basis for the liquid supply of the rocket-to-ground connector. The rocket-to-ground connector is installed on the docking panel, and by fixing the docking panel and the test bracket, the rocket-to-ground connector pipeline connection strength test, the rocket-to-ground connector pipeline normal temperature air tightness test and the rocket-to-ground connector pipeline low temperature air tightness test can be carried out. By unlocking the docking panel and the test bracket, the pull-out force test can be carried out. Various test items can be met without the need to re-produce the corresponding model of test equipment.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a stainless steel rocket-to-ground connector test device according to the present invention.

[0019] Figure 2 This is a schematic structural diagram of the arrow-to-ground connector mounting hole of a stainless steel rocket arrow-to-ground connector test device according to the present invention.

[0020] Figure 3This is a schematic diagram of the use of a handle of a stainless steel rocket-to-ground connector test device according to the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of a test bracket based on a stainless steel rocket-to-ground connector test device of the present invention.

[0022] Figure 5 This is a schematic diagram of the docking panel structure of a stainless steel rocket-to-ground connector test device according to the present invention.

[0023] Figure 6 This is a schematic diagram of the support structure of a stainless steel rocket-to-ground connector test device according to the present invention.

[0024] Figure 7 This is a schematic diagram of a variable diameter pipeline structure based on a stainless steel rocket-to-ground connector test device of the present invention.

[0025] In the figure, 1. test bracket; 101. frame body; 102. connecting rod; 2. support member; 201. L-shaped plate; 202. bolt mounting hole; 203. support mounting hole; 3. reducer pipe; 301. reducer pipe body; 302. upper flange; 303. lower flange; 4. docking panel; 5. arrow-to-ground connector; 6. limiting ring; 7. panel mounting hole; 8. connecting hole; 9. support member mounting hole; 10. support rod; 11. arrow-to-ground connector mounting hole; 12. handle; 13. ground fixing mounting hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] See also Figure 1-Figure 7An embodiment of the present invention provides a technical solution: a stainless steel rocket-to-ground connector test device, comprising a test bracket 1, a support member 2 is installed inside the test bracket 1, and the support member 2 is used to install a reducing pipe 3; a docking panel 4 is installed on the top of the test bracket 1, and the docking panel 4 is used to install a rocket-to-ground connector 5 connected to the top of the reducing pipe 3, and the bottom of the reducing pipe 3 is used to connect to the ground pipeline.

[0029] Specifically, the reducer pipe 3 includes a reducer body 301, an upper flange 302 and a lower flange 303. The upper flange 302 is fixedly connected to the top of the reducer body 301, and the lower flange 303 is fixedly connected to the bottom of the reducer body 301; the upper flange 302 is used to connect to the arrow-to-ground connector 5, and the lower flange 303 is used to connect to the ground pipeline.

[0030] In this embodiment, the top of the reducer pipe 3 is connected to the arrow-to-ground connector 5, and the bottom is connected to the ground pipeline, which can realize the liquid supply to the arrow-to-ground connector 5 and provide a basis for performing normal temperature air tightness test and low temperature air tightness test of the arrow-to-ground connector pipeline.

[0031] Specifically, two limiting rings 6 are fixedly connected to the reducer tube body 301, and the two limiting rings 6 are used to connect with the support member 2. The support member 2 includes an L-shaped plate 201, and a bolt mounting hole 202 is provided on the surface of the L-shaped plate 201, and the bolt mounting hole 202 is connected to the support member mounting hole 9 for mounting and fixing the support member 2; a support mounting hole 203 is provided on the top of the L-shaped plate 201, and the inner diameter of the support mounting hole 203 is adapted to the outer diameter of the reducer tube body 301.

[0032] In this embodiment, the reducer pipe 3 includes a reducer pipe body 301, an upper flange 302 and a lower flange 303, and the upper flange 302 and the lower flange 303 are respectively fixedly connected to the upper and lower parts of the reducer pipe body 301. In addition, two limiting rings 6 are fixedly connected to the surface of the reducer pipe body 301, and the distance between the two limiting rings 6 is consistent with the thickness of the L-shaped plate 201. The position between the two limiting rings 6 is connected to the support mounting hole 203 on the L-shaped plate 201, so that the reducer pipe body 301 can be limited on the L-shaped plate 201.

[0033] Specifically, the test bracket 1 includes a frame body 101 and a connecting rod 102, the connecting rod 102 is fixedly connected to one side of the frame body 101, and the connecting rod 102 is connected to the support member 2; a plurality of panel mounting holes 7 are opened on the top surface of the frame body 101, and a plurality of connecting holes 8 are opened on the surface of the docking panel 4, and the panel mounting holes 7 correspond to the connecting holes 8 one by one.

[0034] Specifically, a plurality of connecting rods 102 are arranged in an array from bottom to top on one side of the test bracket 1 , and a support member mounting hole 9 is opened on the surface of each connecting rod 102 , and the support member 2 is mounted on the surface of the connecting rod 102 through the support member mounting hole 9 .

[0035] A ground fixing installation hole 13 is provided at the bottom of the frame 101 , and the ground fixing installation hole 13 is used to fix the frame 101 to the ground.

[0036] In this embodiment, the frame 101 is first fixed to the ground through the ground fixing installation hole 13 at the bottom of the frame 101, and the support member 2 is directly installed on the connecting rod 102. The support member 2 includes an L-shaped plate 201, and a support installation hole 203 is opened on the top of the L-shaped plate 201, and a bolt installation hole 202 is opened on the side surface. The bolt installation hole 202 is connected to the support member installation hole 9 on the connecting rod 102, and then the L-shaped plate 201 and the connecting rod 102 can be installed together using bolts. The position of the L-shaped plate 201 relative to the connecting rod 102 can be adjusted according to the size of the variable diameter pipe 3 to be installed on the support member 2, and it can be installed either up or down.

[0037] Specifically, the inner side of the L-shaped plate 201 is fixedly connected with the support rod 10 , and the shape of the bolt mounting hole 202 is elliptical.

[0038] In this embodiment, the mechanical strength of the L-shaped plate 201 can be enhanced by providing the support rods 10, thereby preventing the L-shaped plate 201 from being deformed.

[0039] Specifically, an arrow-to-ground connector mounting hole 11 is opened on the surface of the docking panel 4 , and the arrow-to-ground connector 5 is fixedly connected to the docking panel 4 through the arrow-to-ground connector mounting hole 11 .

[0040] In this embodiment, after the connection holes 8 on the docking panel 4 are aligned with the panel mounting holes 7 on the top of the frame 101, the docking panel 4 and the frame 101 can be fixedly connected together by bolts. Then, the arrow-to-ground connector 5 is passed through the central running notch on the docking panel 4, and the bottom of the arrow-to-ground connector 5 is docked with the upper flange 302 and fixed by bolts. Then, the reserved mounting hole on the arrow-to-ground connector 5 is docked with the arrow-to-ground connector mounting hole 11 on the docking panel 4, and the arrow-to-ground connector 5 is installed on the docking panel 4 by bolts.

[0041] Specifically, a handle 12 is also connected to the top of the docking panel 4, and the handle 12 is used to connect with the dynamometer.

[0042] In this embodiment, the dynamometer is connected to the handle 12, and the dynamometer is pulled, thereby driving the docking panel 4 to move upward through the handle 12, so that the pull-out force test can be performed.

[0043] When in use, first fix the frame 101 on the ground through the ground fixing installation hole 13 at the bottom of the frame 101, and directly install the support member 2 on the connecting rod 102. The support member 2 includes an L-shaped plate 201, and a support installation hole 203 is opened on the top of the L-shaped plate 201, and a bolt installation hole 202 is opened on the side surface. The bolt installation hole 202 is connected with the support member installation hole 9 on the connecting rod 102, and then the L-shaped plate 201 and the connecting rod 102 can be installed together using bolts. The position of the L-shaped plate 201 relative to the connecting rod 102 can be adjusted according to the size of the variable diameter pipe 3 to be installed on the support member 2, and it can be installed either up or down.

[0044] The reducer pipe 3 includes a reducer pipe body 301, an upper flange 302 and a lower flange 303, wherein the upper flange 302 and the lower flange 303 are respectively fixedly connected to the upper and lower parts of the reducer pipe body 301. In addition, two limiting rings 6 are fixedly connected to the surface of the reducer pipe body 301, and the distance between the two limiting rings 6 is consistent with the thickness of the L-shaped plate 201. The position between the two limiting rings 6 is connected to the support mounting hole 203 on the L-shaped plate 201, so that the reducer pipe body 301 can be limited on the L-shaped plate 201.

[0045] After the connection holes 8 on the docking panel 4 are matched with the panel mounting holes 7 on the top of the frame 101, the docking panel 4 and the frame 101 can be fixedly connected together by bolts. Then, the arrow-to-ground connector 5 is passed through the central running notch on the docking panel 4, and the bottom of the arrow-to-ground connector 5 is docked with the upper flange 302 and fixed by bolts. Then, the reserved mounting hole on the arrow-to-ground connector 5 is docked with the arrow-to-ground connector mounting hole 11 on the docking panel 4, and the arrow-to-ground connector 5 is installed on the docking panel 4 by bolts.

[0046] Finally, it is connected to the ground pipeline through the lower flange 303 and is ready for the experiment. The experiment includes the arrow-to-ground connector pipeline connection strength test, the arrow-to-ground connector pipeline normal temperature air tightness test, the arrow-to-ground connector pipeline low temperature air tightness test and the pull-out force test. Among them, when the arrow-to-ground connector pipeline connection strength test, the arrow-to-ground connector pipeline normal temperature air tightness test and the arrow-to-ground connector pipeline low temperature air tightness test are carried out, the docking panel 4 is fixedly connected to the frame 101, and there is one liquid supply line and seven gas supply lines on the arrow-to-ground connector panel. During the arrow-to-ground connector pipeline connection strength test, after the gas supply line and the liquid supply line are connected to the pipeline, 1.5 times the working pressure water pressure is added to the pipeline to maintain the pressure to verify the arrow-to-ground connector pipeline strength. During the arrow-to-ground connector pipeline normal temperature air tightness test, after the gas supply line and the liquid supply line are connected to the pipeline, the working pressure gas is supplied to the pipeline to maintain the pressure to verify the normal temperature air tightness of the arrow-to-ground connector pipeline. During the low-temperature air tightness test and pull-out force test of the Arrow-to-ground connector pipeline, liquid nitrogen is introduced into the liquid supply pipeline to keep the liquid nitrogen in a continuous flow state, and then the working pressure gas is introduced into the gas supply pipeline. After the pre-cooling of the Arrow-to-ground connector panel is completed, the pressure is maintained to verify the air tightness of the gas path under low-temperature conditions.

[0047] During the pull-out test, the docking panel 4 and the frame 101 are moved, that is, the bolts on the connecting hole 8 on the docking panel 4 and the panel mounting hole 7 on the top of the frame 101 are removed. Figure 3 The pull-out force test is carried out on the connection status.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A stainless steel rocket-to-ground connector test device, comprising a test bracket (1), characterized in that: A support member (2) is installed inside the test bracket (1), and the support member (2) is used to install a variable diameter pipe (3); A docking panel (4) is installed on the top of the test bracket (1), and the docking panel (4) is used to install an arrow-to-ground connector (5) connected to the top of the reducer pipe (3), and the bottom of the reducer pipe (3) is used to connect to a ground pipeline; The test stand (1) comprises a frame body (101) and a connecting rod (102), wherein the connecting rod (102) is fixedly connected to one side of the frame body (101), and the connecting rod (102) is connected to a support member (2); The top surface of the frame (101) is provided with a plurality of panel mounting holes (7), the surface of the docking panel (4) is provided with a plurality of connection holes (8), and the panel mounting holes (7) correspond to the connection holes (8) one by one; A plurality of connecting rods (102) are provided and arranged in an array from bottom to top on one side of the test stand (1); a support member mounting hole (9) is provided on the surface of each connecting rod (102); and the support member (2) is mounted on the surface of the connecting rod (102) through the support member mounting hole (9); The support member (2) comprises an L-shaped plate (201), a surface of the L-shaped plate (201) is provided with a bolt mounting hole (202), the bolt mounting hole (202) is butted with the support member mounting hole (9), and is used for mounting and fixing the support member (2); A support installation hole (203) is provided at the top of the L-shaped plate (201), and the inner diameter of the support installation hole (203) is adapted to the outer diameter of the variable diameter tube body (301).

2. A stainless steel rocket-to-ground connector test device according to claim 1, characterized in that: The reducer pipe (3) comprises a reducer pipe body (301), an upper flange (302) and a lower flange (303), wherein the upper flange (302) is fixedly connected to the top of the reducer pipe body (301), and the lower flange (303) is fixedly connected to the bottom of the reducer pipe body (301); The upper flange (302) is used to be connected to the arrow-to-ground connector (5), and the lower flange (303) is used to be connected to a ground pipeline.

3. A stainless steel rocket-to-ground connector test device according to claim 2, characterized in that: Two limiting rings (6) are fixedly connected to the reducer tube body (301), and the two limiting rings (6) are used to be connected to the support member (2).

4. The stainless steel rocket-to-ground connector test device according to claim 1 is characterized by: A support rod (10) is fixedly connected to the inner side of the L-shaped plate (201), and the shape of the bolt mounting hole (202) is elliptical.

5. The stainless steel rocket-to-ground connector test device according to claim 1 is characterized by: An arrow-to-ground connector mounting hole (11) is provided on the surface of the docking panel (4), and the arrow-to-ground connector (5) is fixedly connected to the docking panel (4) via the arrow-to-ground connector mounting hole (11).

6. The stainless steel rocket-to-ground connector test device according to claim 3 is characterized by: A handle (12) is also connected to the top of the docking panel (4), and the handle (12) is used to be connected to a dynamometer.

7. The stainless steel rocket-to-ground connector test device according to claim 1 is characterized by: A ground fixing installation hole (13) is provided at the bottom of the frame (101), and the ground fixing installation hole (13) is used to fix the frame (101) to the ground.

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