Universal spherical compensating flange joint for rocket pipeline

Abstract

The application relates to a universal spherical compensation flange joint for a rocket pipeline, which comprises a first flange, a main shell, a spherical pipeline and a second flange. The inside of the main shell is hollow. The first flange is fixedly connected with the main shell, and the right side medium inlet and outlet of the first medium inlet and outlet passage of the first flange is butted with the medium inlet and outlet of the main shell. The left segment of the spherical pipeline is inserted into the inside hollow part of the main shell from the spherical pipeline mounting port of the main shell, and is rotatably connected with the main shell. The left side medium inlet and outlet of the second medium inlet and outlet passage of the spherical pipeline is communicated with the medium inlet and outlet of the main shell. The second flange is fixedly connected with the main shell, and the spherical pipeline clamping passage of the second flange is butted with the spherical pipeline mounting port of the main shell. The right segment of the spherical pipeline and the part close to the right side of the left segment pass through the spherical pipeline clamping passage. The application can reduce the difficulty of pipeline field sampling, and can avoid the problem of poor sealing effect at the joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rockets, in particular to a universal spherical compensation flange joint for a rocket pipeline. BACKGROUND

[0002] The pipeline is the "heart blood vessel" and "life passage" of the carrier rocket, undertakes the important responsibility of conveying rocket propellants and pressurized gas and other media, and connects various parts of the power system. Its main function is to deliver designated media to the use site for propellant delivery, tank pressurization, pressure relief, pressure measurement, cylinder pressurization, pneumatic valve opening and closing control, gas seal blowing, etc., to ensure the reliable function and normal operation of the rocket power system.

[0003] In the pipeline system, the connection of each pipeline section is realized through pipeline joints. There are various forms of pipeline joints, such as small-diameter 37° pipe joints, fixed flange joints, and fixed sleeve flange joints. In the rocket pipeline system, complex pipeline routes need to be arranged in limited space. Generally, corresponding pipelines are made by on-site sampling in the design, and fixed sleeve flange joints are usually selected to connect the pipeline joints.

[0004] For a complex pipeline system in a limited space, if a fixed flange joint form is used, it will inevitably increase the difficulty of pipeline on-site sampling work, and the problem of poor sealing effect at the joint due to misalignment of the pipeline joint is prone to occur.

[0005] Therefore, how to reduce the difficulty of pipeline on-site sampling work and avoid misalignment of the pipeline joint to avoid the problem of poor sealing effect at the joint is a technical problem that needs to be solved by the technical personnel in the field at present. SUMMARY

[0006] The present application provides a universal spherical compensation flange joint for a rocket pipeline to reduce the difficulty of pipeline on-site sampling work and avoid misalignment of the pipeline joint, thereby avoiding the problem of poor sealing effect at the joint.

[0007] To solve the above technical problems, the present application provides the following technical solutions:

[0008] The universal spherical compensation flange joint for rocket pipeline comprises a first flange, a main shell, a spherical pipeline and a second flange; the main shell is hollow inside, and the left end of the main shell is provided with a medium inlet and outlet communicating inside and outside, and the right end of the main shell is provided with a spherical pipeline mounting port communicating inside and outside; the first flange is fixedly connected with the main shell, and the first flange is provided with a first medium inlet and outlet channel penetrating through the left and right ends, and the right side medium inlet and outlet of the first medium inlet and outlet channel is butted against the medium inlet and outlet of the main shell; the left segment of the spherical pipeline is inserted into the hollow part inside the main shell from the spherical pipeline mounting port, and is rotatably connected with the main shell, and the left end of the spherical pipeline is limited in the medium inlet and outlet of the main shell; the spherical pipeline is provided with a second medium inlet and outlet channel communicating the left and right ends, and the left side medium inlet and outlet of the second medium inlet and outlet channel is communicated with the medium inlet and outlet of the main shell; the second flange is fixedly connected with the main shell, and the second flange is provided with a spherical pipeline clamping channel penetrating through the left and right ends, and the spherical pipeline clamping channel is butted against the spherical pipeline mounting port of the main shell; the right segment of the spherical pipeline and the part of the left segment of the spherical pipeline close to the right side pass through the spherical pipeline clamping channel, and the part of the left segment of the spherical pipeline close to the left side is limited in the hollow part inside the main shell by the second flange.

[0009] The universal spherical compensation flange joint for rocket pipeline as described above, preferably, the outer surface of the main shell is provided with a first fixed wing and a second fixed wing extending outward, the first fixed wing is located at the medium inlet and outlet of the main shell, and the second fixed wing is located at the spherical pipeline mounting port; the outer surface of the first flange is provided with a third fixed wing extending outward, the third fixed wing is located at the right side medium inlet and outlet of the first medium inlet and outlet channel, and the outer surface of the second flange is provided with a fourth fixed wing extending outward, the fourth fixed wing is located at the right segment of the second flange; the third fixed wing is fixedly connected with the first fixed wing, and the fourth fixed wing is fixedly connected with the second fixed wing.

[0010] The universal spherical compensation flange joint for rocket pipeline as described above, preferably, the right part of the hollow part inside the main shell is a spherical pipeline mounting cavity, the left part of the hollow part inside the main shell is a medium inlet and outlet cavity, and the inner diameter of the spherical pipeline mounting cavity is greater than the inner diameter of the medium inlet and outlet cavity; the outer diameter of the left segment of the spherical pipeline is greater than the inner diameter of the medium inlet and outlet cavity of the main shell, so as to limit the left end of the spherical pipeline in the medium inlet and outlet of the main shell.

[0011] The universal spherical compensation flange joint for rocket pipeline as described above, preferably, the inner diameter of the spherical pipeline clamping channel is smaller than the inner diameter of the spherical pipeline mounting port of the main shell, and the inner diameter of the spherical pipeline clamping channel is smaller than the part of the outer diameter of the left segment of the spherical pipeline; the outer diameter of the left segment of the spherical pipeline is greater than the outer diameter of the right segment of the spherical pipeline, so as to limit the part of the left segment of the spherical pipeline close to the left side in the hollow part inside the main shell.

[0012] The universal spherical compensation flange joint for the rocket pipeline as described above, wherein preferably, the inner wall of the part of the spherical pipeline mounting cavity near the left side is an inner spherical surface facing the spherical pipeline mounting port; the inner wall of the part of the spherical pipeline mounting cavity near the right side is an inner cylindrical surface, and the inner diameter of the inner cylindrical surface of the spherical pipeline mounting cavity is larger than the inner spherical surface of the spherical pipeline mounting cavity.

[0013] The universal spherical compensation flange joint for the rocket pipeline as described above, wherein preferably, the outer surface of the left section of the spherical pipeline is an outer spherical surface, and the outer spherical surface of the left section of the spherical pipeline near the left side is in contact with the inner spherical surface of the spherical pipeline mounting cavity to facilitate the rotatable connection of the left section of the spherical pipeline with the main shell; the outer surface of the right section of the spherical pipeline is an outer cylindrical surface.

[0014] The universal spherical compensation flange joint for the rocket pipeline as described above, wherein preferably, the inner surface of the left section of the second medium access channel is an inner spherical surface to correspond to the outer spherical surface of the spherical pipeline, and the inner surface of the right section of the second medium access channel is an inner cylindrical surface to correspond to the outer cylindrical surface of the spherical pipeline.

[0015] The universal spherical compensation flange joint for the rocket pipeline as described above, wherein preferably, the right end surface of the first flange has a first sealing boss protruding to the right, the left end surface of the main shell has a first sealing groove recessed to the right, and a first sealing ring is arranged in the first sealing groove, the first sealing boss of the first flange extends into the first sealing groove of the main shell and extrudes the first sealing ring to ensure the sealing property of the fixed connection between the first flange and the main shell.

[0016] The universal spherical compensation flange joint for the rocket pipeline as described above, wherein preferably, an outwardly recessed second sealing groove is arranged on the inner spherical surface of the spherical pipeline mounting cavity, and a second sealing ring is arranged in the second sealing groove, the inner end of the second sealing ring extends out of the second sealing groove and is extruded by the outer spherical surface of the spherical pipeline to ensure the sealing property between the main shell and the spherical pipeline.

[0017] The universal spherical compensation flange joint for the rocket pipeline as described above, wherein preferably, a third sealing ring is arranged from the spherical pipeline mounting port of the main shell to the spherical pipeline mounting cavity of the main shell, and the outer spherical surface of the spherical pipeline extrudes the third sealing ring with the inner cylindrical surface of the spherical pipeline mounting cavity of the main shell, the left end surface of the second flange is in contact with the right end surface of the third sealing ring and extrudes the right end surface of the third sealing ring to ensure the sealing property between the second flange and the spherical pipeline.

[0018] In view of the above background, the universal spherical compensation flange joint for the rocket pipeline provided by the present application can reduce the difficulty of pipeline on-site sampling work and avoid the misalignment of pipeline joints, thereby avoiding the problem of poor sealing effect at the joint. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the universal ball-shaped compensating flange joint for rocket pipelines provided in this application;

[0021] Figure 2 This is a cross-sectional view of the universal ball-type compensating flange joint for rocket pipelines provided in this application. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. Additionally, spatial relationship terms such as "upper," "lower," "left," "right," "front," and "rear" are used for ease of description to explain the positional relationship between two components. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] like Figure 1 and Figure 2 As shown, this application provides a universal spherical compensating flange joint for rocket pipelines, including: a first flange 110, a main shell 120, a spherical pipeline 130, and a second flange 140.

[0024] The main housing 120 is hollow inside, and its left end has a medium inlet / outlet connecting the inside and outside, while its right end has a spherical pipe mounting port connecting the inside and outside. Optionally, the right part of the hollow interior of the main housing 120 is a spherical pipe mounting cavity, and the left part is a medium inlet / outlet cavity. The inner diameter of the spherical pipe mounting cavity is larger than the inner diameter of the medium inlet / outlet cavity, so that the spherical pipe mounting cavity can accommodate the spherical pipe 130, and the spherical pipe 130 is limited on the left side. Optionally, the inner wall of the portion of the spherical pipe mounting cavity near the left side is an inner spherical surface facing the spherical pipe mounting opening, so as to mate with the outer spherical surface of the spherical pipe 130; the inner wall of the portion of the spherical pipe mounting cavity near the right side is an inner cylindrical surface, and the inner diameter of the inner cylindrical surface of the spherical pipe mounting cavity is larger than the inner spherical surface of the spherical pipe mounting cavity, so as to facilitate the insertion of the spherical pipe 130 into the spherical pipe mounting cavity. Alternatively, the inner wall of the medium inlet / outlet cavity is an inner cylindrical surface.

[0025] In addition, the outer diameter of the right part of the main shell 120 is greater than the outer diameter of the left part of the main shell 120, so as to correspond to the shape of the spherical pipeline mounting cavity of the main shell 120 and the medium inlet and outlet cavity of the main shell 120, thereby ensuring the uniform thickness of the main shell 120. Optionally, the outer surface of the right part of the main shell 120 near the right side is an outer cylindrical surface, so as to correspond to the inner cylindrical surface of the spherical pipeline mounting cavity; the outer surface of the right part of the main shell 120 near the left side is an outer conical surface, so as to correspond to the inner spherical surface of the spherical pipeline mounting cavity; and the outer surface of the left part of the main shell 120 is an outer cylindrical surface, so as to correspond to the inner cylindrical surface of the medium inlet and outlet cavity. Optionally, the outer surface of the main shell 120 has a first fixed wing extending outward, and the first fixed wing is located at the medium inlet and outlet of the main shell 120, so as to realize fixed connection with the first flange 110; and the outer surface of the main shell 120 has a second fixed wing extending outward, and the second fixed wing is located at the spherical pipeline mounting port, so as to realize fixed connection with the second flange 140. Further optionally, the first fixed wing and the second fixed wing each have a connecting hole penetrating through the left and right sides, so that fixed connection is realized through bolts.

[0026] The first flange 110 is fixedly connected with the main shell 120, and the first flange 110 has a first medium inlet and outlet channel penetrating through the left and right ends, and the right medium inlet and outlet of the first medium inlet and outlet channel is butted against the medium inlet and outlet of the main shell 120, and the left medium inlet and outlet of the first medium inlet and outlet channel is used for butt joint with the pipeline on the rocket. Optionally, the outer surface of the first flange 110 has a third fixed wing extending outward, and the third fixed wing is located at the right medium inlet and outlet of the first medium inlet and outlet channel, and the third fixed wing is butted against the first fixed wing of the main shell 120. Further optionally, the third fixed wing has a connecting hole penetrating through the left and right sides, so that fixed connection is realized through bolts. In addition, since the right part of the first flange 110 has the third fixed wing, the diameter of the left part of the first flange 110 is smaller than the diameter of the right part of the first flange 110, so as to facilitate the insertion of the left part of the first flange 110 into the pipeline of the rocket, and realize connection with the pipeline of the rocket. Yet optionally, the inner wall of the first medium inlet and outlet channel of the first flange 110 is an inner cylindrical surface, and the diameter of the inner cylindrical surface of the first medium inlet and outlet channel is the same as the diameter of the inner cylindrical surface of the medium inlet and outlet cavity, so as to facilitate the flow of the medium.

[0027] In addition, in order to ensure the sealing performance of the fixed connection part of the first flange 110 and the main shell 120, the right end surface of the first flange 110 has a first sealing boss protruding to the right, the left end surface of the main shell 120 has a first sealing groove recessed to the right, and a first sealing ring 150 is arranged in the first sealing groove, and the first sealing boss of the first flange 110 extends into the first sealing groove of the main shell 120 and extrudes the first sealing ring 150, so as to ensure the sealing performance of the fixed connection part of the first flange 110 and the main shell 120. Optionally, the first sealing ring 150 is an O-shaped sealing ring.

[0028] The left section of the spherical pipe 130 is inserted into the hollow interior of the main housing 120 through the spherical pipe mounting port, and is rotatably connected to the main housing 120. The left end of the spherical pipe 130 is confined within the medium inlet / outlet of the main housing 120. Optionally, the outer diameter of the left section of the spherical pipe 130 is larger than the inner diameter of the medium inlet / outlet cavity of the main housing 120, thereby restricting the position of the left end of the spherical pipe 130. Alternatively, the outer diameter of the left section of the spherical pipe 130 is larger than the outer diameter of the right section of the spherical pipe 130, so that the left section of the spherical pipe 130 can be confined within the hollow interior of the main housing 120 via the second flange 140. Alternatively, the outer surface of the left section of the spherical pipe 130 is an outer spherical surface, and the outer spherical surface of the left section of the spherical pipe 130 near the left side contacts and fits with the inner spherical surface of the spherical pipe mounting cavity, so as to facilitate the rotatable connection between the left section of the spherical pipe 130 and the main housing 120; the outer surface of the right section of the spherical pipe 130 is an outer cylindrical surface.

[0029] In addition, to ensure the sealing between the main housing 120 and the spherical pipe 130, a second outwardly recessed sealing groove is provided on the inner spherical surface of the spherical pipe mounting cavity, and a second sealing ring 160 is provided in the second sealing groove. The inner end of the second sealing ring 160 extends out of the second sealing groove and is squeezed by the outer spherical surface of the spherical pipe 130 to ensure the sealing between the main housing 120 and the spherical pipe 130. Optionally, the second sealing ring 160 is an irregular sealing ring, specifically, the inner end face of the second sealing ring 160 is an inner spherical surface to fit the outer spherical surface of the spherical pipe 130.

[0030] Furthermore, the spherical conduit 130 has a second medium inlet / outlet channel connecting its left and right ends, and the left medium inlet / outlet of the second medium inlet / outlet channel is connected to the medium inlet / outlet of the main housing 120. Optionally, the inner surface of the left section of the second medium inlet / outlet channel is an inner spherical surface, corresponding to the outer spherical surface of the spherical conduit 130, and the inner surface of the right section of the second medium inlet / outlet channel is an inner cylindrical surface, corresponding to the outer cylindrical surface of the spherical conduit 130, thereby ensuring the uniform thickness of the spherical conduit 130.

[0031] The second flange 140 is fixedly connected with the main shell 120, and has a spherical pipeline clamping channel penetrating through the left and right ends, which is in butt joint with the spherical pipeline mounting port of the main shell 120; the right section of the spherical pipeline 130 and the part close to the right side of the left section of the spherical pipeline 130 penetrates through the spherical pipeline clamping channel, and the right side medium inlet and outlet of the second medium inlet and outlet channel of the spherical pipeline 130 is used for butt joint with the pipeline on the rocket; the part close to the left side of the left section of the spherical pipeline 130 is limited in the internal hollow part of the main shell 120 by the second flange 140. Optionally, the inner diameter of the spherical pipeline clamping channel is smaller than the inner diameter of the spherical pipeline mounting port of the main shell 120, and the inner diameter of the spherical pipeline clamping channel is smaller than the outer diameter of the part of the left section of the spherical pipeline 130, so that the part close to the left side of the left section of the spherical pipeline 130 is limited in the internal hollow part of the main shell 120. Further optionally, the inner diameter of the spherical pipeline clamping channel is smaller than the outer diameter of the outer spherical surface of the spherical pipeline 130. Yet optionally, the outer surface of the second flange 140 has a fourth fixing wing extending outward, the fourth fixing wing is located at the right section of the second flange 140, and the fourth fixing wing is in butt joint with the second fixing wing of the main shell 120; the outer diameter of the outer surface of the left section of the second flange 140 is smaller than the inner diameter of the spherical pipeline mounting port of the main shell 120, so that the left section of the second flange 140 is inserted into the spherical pipeline mounting port of the main shell 120. Still optionally, the fourth fixing wing has a connecting hole penetrating through the left and right sides, so that the fixed connection is realized through bolts.

[0032] In addition, in order to ensure the sealing between the second flange 140 and the spherical pipeline 130, the third sealing ring 170 is inserted from the spherical pipeline mounting port of the main shell 120 to the spherical pipeline mounting cavity of the main shell 120, and the outer spherical surface of the spherical pipeline 130 is in extrusion with the inner cylindrical surface of the spherical pipeline mounting cavity of the main shell 120, the left end surface of the second flange 140 is in contact with and extrudes the right end surface of the third sealing ring 170, so as to ensure the sealing between the second flange 140 and the spherical pipeline 130. Optionally, the third sealing ring 170 is a trapezoidal sealing ring, the large end of the trapezoidal sealing ring is in contact with the left end surface of the second flange 140, and the inclined surface of the trapezoidal sealing ring is in contact with the outer spherical surface of the spherical pipeline 130.

[0033] The universal spherical compensation flange joint for the pipeline of the rocket in the application can rotate within the main shell 120, so that the difficulty of pipeline on-site sampling work is reduced, and the problem of poor sealing effect at the joint due to the butt joint of the pipeline joint is avoided.

[0034] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0035] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A universal spherical compensating flange joint for a rocket pipeline, characterized in that, The utility model relates to a kind of ball valve, including: First flange, main shell, spherical pipeline and second flange; The inside of main shell is hollow, and the left end of main shell has medium access opening communicating inside and outside, and the right end of main shell has spherical pipeline mounting port communicating inside and outside; The right part of the hollow part of the inside of main shell is spherical pipeline mounting cavity, the inner wall of the part close to left side of spherical pipeline mounting cavity is inner spherical surface towards spherical pipeline mounting port, so as to cooperate with the outer spherical surface of spherical pipeline, the inner wall of the part close to right side of spherical pipeline mounting cavity is inner cylindrical surface, and the inner diameter of inner cylindrical surface of spherical pipeline mounting cavity is greater than inner spherical surface of spherical pipeline mounting cavity, so as to facilitate the spherical pipeline mounting cavity to be loaded into spherical pipeline; First flange is fixedly connected with main shell, and first flange has first medium access channel passing through left and right ends, and the right side medium access opening of first medium access channel is butted with the medium access opening of main shell; The left segment of spherical pipeline is inserted into the hollow part of the inside of main shell from spherical pipeline mounting port, and is rotatably connected with main shell, and the left end of spherical pipeline is limited in the medium access opening of main shell;Spherical pipeline has second medium access channel communicating left and right ends, and the left side medium access opening of second medium access channel is communicated with the medium access opening of main shell; Second flange is fixedly connected with main shell, and second flange has spherical pipeline clamping channel passing through left and right ends, and spherical pipeline clamping channel is butted with the spherical pipeline mounting port of main shell; The right segment of spherical pipeline and the part close to right side of left segment of spherical pipeline pass through spherical pipeline clamping channel, and the part close to left side of left segment of spherical pipeline is limited in the hollow part of the inside of main shell by second flange; The outer surface of left segment of spherical pipeline is outer spherical surface, and the outer spherical surface of the part close to left side of left segment of spherical pipeline is in contact with the inner spherical surface of spherical pipeline mounting cavity, so as to facilitate the rotatable connection of left segment of spherical pipeline and main shell; Second sealing groove recessed outward is arranged on the inner spherical surface of spherical pipeline mounting cavity, and second sealing ring is arranged in second sealing groove recessed outward, and the inner end of second sealing ring protrudes from second sealing groove recessed outward and is extruded by the outer spherical surface of spherical pipeline, so as to ensure the sealing between main shell and spherical pipeline; Third sealing ring is installed from the spherical pipeline mounting port of main shell to the spherical pipeline mounting cavity of main shell, and the outer spherical surface of spherical pipeline extrudes the inner cylindrical surface of the spherical pipeline mounting cavity of main shell, and the left end surface of second flange contacts the right end surface of third sealing ring and extrudes the right end surface of third sealing ring, so as to ensure the sealing between second flange and spherical pipeline.

2. The universal spherical compensating flange joint for rocket pipes according to claim 1, characterized in that, The outer surface of main shell has outwardly extending first fixing wing and second fixing wing, the first fixing wing is located at the medium access opening of main shell, and the second fixing wing is located at the spherical pipeline mounting port; The outer surface of first flange has outwardly extending third fixing wing, and the third fixing wing is located at the right side medium access opening of first medium access channel, and the outer surface of second flange has outwardly extending fourth fixing wing, and the fourth fixing wing is located at the right segment of second flange; Third fixing wing is fixedly connected with first fixing wing, and fourth fixing wing is fixedly connected with second fixing wing.

3. The gimbaled spherical compensating flange joint for a rocket pipe according to claim 1 or 2, characterized in that, The left part of the internal hollow part of the main shell is a medium inlet and outlet cavity, and the inner diameter of the spherical pipeline mounting cavity is larger than the inner diameter of the medium inlet and outlet cavity; The outer diameter of the left segment of the spherical pipeline is larger than the inner diameter of the medium inlet and outlet cavity of the main shell, so as to limit the left end of the spherical pipeline in the medium inlet and outlet of the main shell.

4. The gimbaled spherical compliant flange joint for a rocket pipe of claim 3, wherein, The inner diameter of the spherical pipeline clamping channel is smaller than the inner diameter of the spherical pipeline mounting port of the main shell, and the inner diameter of the spherical pipeline clamping channel is smaller than the partial outer diameter of the left segment of the spherical pipeline; The outer diameter of the left segment of the spherical pipeline is larger than the outer diameter of the right segment of the spherical pipeline, so as to limit the part of the left segment of the spherical pipeline close to the left side in the internal hollow part of the main shell.

5. The gimbaled spherical compliant flange joint for a rocket pipe of claim 4, wherein, The outer surface of the right segment of the spherical pipeline is an outer cylindrical surface.

6. The gimbaled spherical compliant flange joint for a rocket pipe of claim 5, wherein, The inner surface of the left segment of the second medium inlet and outlet channel is an inner spherical surface to correspond to the outer spherical surface of the spherical pipeline, and the inner surface of the right segment of the second medium inlet and outlet channel is an inner cylindrical surface to correspond to the outer cylindrical surface of the spherical pipeline.

7. The universal spherical compensating flange joint for rocket pipes according to claim 2, characterized in that, The right end surface of the first flange has a right convex first sealing boss, the left end surface of the main shell has a right concave first sealing groove, and a first sealing ring is arranged in the first sealing groove, and the first sealing boss of the first flange extends into the first sealing groove of the main shell and extrudes the first sealing ring, so as to ensure the sealing property of the fixed connection between the first flange and the main shell.

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