Pipeline sealing device for hydrogen energy pipe pressure test

Abstract

The utility model relates to a pipeline sealing device for a hydrogen energy pipe pressure test, which comprises a hydrogen pipe and a gas inlet pipe, one end of the hydrogen pipe is closed, the other end of the hydrogen pipe is open, the open end of the hydrogen pipe is provided with a closing assembly, and the pipe wall of the open end of the hydrogen pipe is provided with an attaching assembly. The utility model relates to the technical field of hydrogen energy pipe sealing. When the pipeline sealing device for the hydrogen energy pipe pressure test is used, a sealing piece is used for rapidly sealing a gas inlet pipe for inputting hydrogen and a hydrogen pipe, and meanwhile, in the sealing process, the sealing performance between a sealing cover and the hydrogen pipe is further improved through an arranged attaching assembly; therefore, when the sealing cover and the hydrogen pipe are sealed, the sealing performance of the sealing assembly is further improved through the attaching piece, the effect of rapidly sealing the hydrogen pipe, the sealing cover and the gas inlet pipe is achieved, and the pressure test of the hydrogen energy pipe is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydrogen energy pipe sealing, especially to a pipeline sealing device for hydrogen energy pipe pressure test. BACKGROUND

[0002] The hydrogen energy pipe is mainly used for inflation test and burst test during pressure test, and the inflation end of the pipeline and the inflation mechanism needs to be sealed during inflation pressure test to avoid the inflation head from falling off due to the increase of the pressure in the hydrogen energy pipe during inflation, thereby affecting the pressure test of the hydrogen energy pipe.

[0003] In the prior art, the flange and the bolt are used to seal the inflation pipe and the hydrogen energy pipe, the axial thrust is applied by the plurality of bolts to tightly seal the inflation end of the inflation pipe and the hydrogen energy pipe, thereby avoiding the hydrogen gas in the hydrogen energy pipe from leaking, and the plurality of bolts on the flange need to be fixed, which consumes a lot of time and affects the work progress of the pressure test of the hydrogen energy pipe. SUMMARY

[0004] In view of the above problems in the prior art, the pipeline sealing device for hydrogen energy pipe pressure test is provided to solve the above technical problems.

[0005] The above technical problem of the utility model is solved by the following technical scheme.

[0006] The pipeline sealing device for hydrogen energy pipe pressure test comprises a hydrogen pipe and an air inlet pipe, one end of the hydrogen pipe is closed, the other end is open, a closing assembly is arranged at the open end of the hydrogen pipe, and a fitting assembly is arranged on the pipe wall of the open end of the hydrogen pipe.

[0007] The fitting assembly comprises a plurality of recess holes, a sliding rod, an air duct, an annular groove and a gasket ring, the plurality of recess holes are arranged in an annular array on the pipe wall of the open end of the hydrogen pipe, the sliding rod is connected to each recess hole in a sliding manner and is arranged in a dynamic sealing manner, the air duct is arranged in each recess hole, the annular groove is arranged in the pipe wall of the open end of the hydrogen pipe, the gasket ring is connected to the annular groove in a sliding manner and is arranged in a dynamic sealing manner, the air duct and the annular groove are in communication, and a sealing assembly is further arranged at the open end of the hydrogen pipe.

[0008] The utility model discloses a further configuration in a preferable example can be: the closed assembly includes the cover, the cover is concave shape setting, the outer peripheral side of hydrogen pipe open end is set with the thread part, the cover is connected with hydrogen pipe through the thread part, the air inlet pipe is fixedly connected in the center of the cover away from one side of hydrogen pipe, and the end of air inlet pipe extends to hydrogen pipe.

[0009] The utility model discloses a further configuration in a preferable example can be: the sealing assembly includes the inner ring groove, the inner ring groove is set up on the inner side wall of hydrogen pipe open end, the first sealing ring is fixedly connected in the inner ring groove, the side of first sealing ring is close to the side of cover near hydrogen pipe and is pasted, the inner ring groove is communicated with annular groove, and the cover is provided with auxiliary part.

[0010] The utility model discloses a further configuration in a preferable example can be: the auxiliary part includes the inner recess, the inner recess is set up in the side of cover near hydrogen pipe, the inner recess is annular setting, the second sealing ring is fixedly connected in the inner recess, and the side of second sealing ring near hydrogen pipe is pasted with first sealing ring.

[0011] The utility model discloses a further configuration in a preferable example can be: the side of cover near hydrogen pipe still sets up the outer ring groove, and the one end of a plurality of slide rods near cover is rotatably connected with universal ball, and the side of universal ball near cover is pasted with the inner side wall of outer ring groove.

[0012] The utility model discloses a further configuration in a preferable example can be: one side of hydrogen pipe open end is connected with the closed disc, and the air inlet hole corresponding with air inlet pipe is set up on the closed disc.

[0013] Summarized above, the utility model discloses at least one beneficial technical effect:

[0014] 1. The pipeline sealing device for hydrogen energy pipe pressure test, when using, the input hydrogen's air inlet pipe and hydrogen pipe are closed and sealed quickly with the closure, and in the process of closing, the sealing property between cover and hydrogen pipe is further improved with the setting pasting assembly, so that when cover and hydrogen pipe are closed, the sealing property of sealing assembly is further improved with the pasting piece, the effect that air inlet pipe, cover and air inlet pipe are closed and sealed quickly is achieved, and the pressure test of hydrogen energy pipe is avoided to be influenced.

[0015] 2. The pipe sealing device for hydrogen energy pipe pressure test, the closure is connected with the hydrogen pipe by the cover, the cover is screwed with the hydrogen pipe by the threaded part, the hydrogen pipe can be quickly closed by the cover, the closure of the cover of the hydrogen pipe drives the fitting part to seal the sealing assembly more tightly, so that the sealing property is improved when the cover quickly closes the hydrogen pipe;

[0016] 3. The pipe sealing device for hydrogen energy pipe pressure test, the first sealing ring is connected in the inner ring groove, and the inner ring groove is communicated with the annular groove, the gasket ring is pushed when the air pressure in the air passage increases, the first sealing ring is extruded by the gasket ring, so that the first sealing ring is more tightly fitted with the auxiliary part, thereby improving the sealing property between the cover and the hydrogen pipe;

[0017] 4. The pipe sealing device for hydrogen energy pipe pressure test, the second sealing ring is connected in the inner groove, so that the second sealing ring is fitted with the first sealing ring, when the first sealing ring is extruded by the gasket ring, the first sealing ring and the second sealing ring are more tightly fitted, thereby improving the sealing property of the cover and the hydrogen pipe;

[0018] 5. The pipe sealing device for hydrogen energy pipe pressure test, the outer ring groove is formed on the side of the cover close to the air pipe, and the universal ball is rotationally connected to the end of the slide rod close to the cover, so that the universal ball can roll at the end of the slide rod close to the cover, when the cover is screwed with the hydrogen pipe, the universal ball is rubbed, the friction between the cover and the end of the slide rod is reduced, the friction loss of the slide rod and the cover is reduced, and the service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a whole structure schematic view of the pipe sealing device for hydrogen energy pipe pressure test of the present application.

[0021] Figure 2 It is a sectional structure schematic view of the pipe sealing device for hydrogen energy pipe pressure test of the present application.

[0022] Figure 3 It is a sectional structure schematic view of the pipe sealing device for hydrogen energy pipe pressure test of the present application. Figure 2 It is an enlarged structure schematic view of A in the above.

[0023] Figure 4The utility model discloses a kind of pipeline sealing devices for hydrogen energy pipe pressure test's hydrogen pipe opening end structure schematic view.

[0024] In the drawing, 1, hydrogen pipe;2, inlet pipe;3, closure assembly;4, fitting assembly;5, recess;6, slide bar;7, air passage;8, annular groove;9, gasket ring;10, sealing assembly;11, cover;12, threaded portion;13, inner ring groove;14, first sealing ring;15, auxiliary;16, inner recess;17, second sealing ring;18, outer ring groove;19, universal ball;20, closure disc;21, inlet hole. DETAILED DESCRIPTION

[0025] The utility model makes further detailed description in combination with drawing. EMBODIMENT

[0026] REFERENCE Figures 1-4 The utility model discloses a kind of pipeline sealing devices for hydrogen energy pipe pressure test, including hydrogen pipe 1 and inlet pipe 2, the one end of hydrogen pipe 1 is closed arrangement, and the other end is open arrangement, the open end of hydrogen pipe 1 is provided with closure assembly 3, the pipe wall on the open end of hydrogen pipe 1 is provided with fitting assembly 4;

[0027] The fitting assembly 4 includes several recesses 5, slide bar 6, air passage 7, annular groove 8 and gasket ring 9, several recesses 5 are annular array distribution and are opened on the pipe wall of the open end of hydrogen pipe 1, each recess 5 is slidably connected with slide bar 6, and is dynamically sealed arrangement, each recess 5 is internally provided with air passage 7, annular groove 8 is opened in the pipe wall of the open end of hydrogen pipe 1, gasket ring 9 is slidably connected in annular groove 8, and is dynamically sealed arrangement, air passage 7 is communicated with annular groove 8, the open end of hydrogen pipe 1 is also provided with sealing assembly 10.

[0028] In the embodiment, reference Figure 1 When hydrogen pipe 1 in, hydrogen is injected into hydrogen pipe 1 using inlet pipe 2, to test the gas injection pressure test of hydrogen pipe 1, reference Figure 2 When gas injection mechanism in, inlet pipe 2 is communicated with hydrogen injection mechanism, then closure assembly 3 is connected in the open end of hydrogen pipe 1, to be closed;

[0029] Reference Figure 3When the sealing assembly 3 is connected to the open end of the hydrogen pipe 1, the fitting component will squeeze the slide rod 6, which will slide within the recess 5. The slide rod 6 is dynamically sealed within the recess 5, thereby pushing the gas pressure within the recess 5 into the gas passage 7. The increased gas pressure within the gas passage 7 will push the gasket ring 9 located in the annular groove 8, causing the gasket ring 9 to squeeze the sealing assembly 10, making the sealing assembly 10 seal more tightly. Thus, when the sealing assembly 3 quickly seals the hydrogen pipe 1, the sealing performance of the hydrogen pipe 1 can be guaranteed.

[0030] In a further preferred embodiment of this utility model, such as Figures 2-3 As shown, the sealing component 3 includes a cap 11, which is concave. A threaded portion 12 is provided on the outer periphery of the opening end of the hydrogen pipe 1. The cap 11 is threadedly connected to the hydrogen pipe 1 through the threaded portion 12. The inlet pipe 2 is fixedly connected to the center of the side of the cap 11 away from the hydrogen pipe 1, and the end of the inlet pipe 2 extends into the hydrogen pipe 1.

[0031] In this embodiment, reference Figure 2 The sealing component, consisting of a cap 11, connects to the hydrogen pipe 1. A threaded portion 12 connects the cap 11 to the hydrogen pipe 1, allowing for quick sealing of the hydrogen pipe 1 via the cap 11. Simultaneously with the cap 11 sealing the hydrogen pipe 1, [further details are needed]. Figure 3 This causes the bonding component to seal the sealing assembly 10 more tightly, thereby improving its sealing performance when the cap 11 is quickly closed to seal the hydrogen pipe 1.

[0032] The air intake pipe is connected to the end of the cover 11, so that the air intake pipe is welded to the cover 11, thereby preventing air leakage at the air intake pipe position in the cover 11.

[0033] In a further preferred embodiment of this utility model, such as Figure 3 As shown, the sealing assembly 10 includes an inner annular groove 13, which is formed on the inner sidewall of the opening end of the hydrogen pipe 1. A first sealing ring 14 is fixedly connected in the inner annular groove 13. The side of the first sealing ring 14 fits against the side of the cover 11 near the hydrogen pipe 1. The inner annular groove 13 communicates with the annular groove 8. An auxiliary component 15 is provided on the cover 11.

[0034] In this embodiment, reference Figure 3 The sealing component 10 has a first sealing ring 14 connected in the inner ring groove 13 and the inner ring groove 13 is connected to the annular groove 8. When the gas pressure in the gas passage 7 increases, it will push the gasket ring 9, which will squeeze the first sealing ring 14, thereby making the first sealing ring 14 fit more tightly with the auxiliary component 15, thus improving the sealing performance between the cap 11 and the hydrogen pipe 1.

[0035] In further preferable embodiments of the present application, as shown in Figure 3 The auxiliary part 15 comprises an inner groove 16, which is arranged on the side of the cover 11 close to the hydrogen pipe 1, and the inner groove 16 is annularly arranged, and a second sealing ring 17 is fixedly connected in the inner groove 16, and the side of the second sealing ring 17 close to the hydrogen pipe 1 is attached to the first sealing ring 14.

[0036] In the present embodiment, the inner groove 16 in reference 3 is connected with the second sealing ring 17, so that the second sealing ring 17 is attached to the first sealing ring 14, and when the first sealing ring 14 is extruded by the gasket ring 9, the first sealing ring 14 is attached to the second sealing ring 17 more tightly, thereby improving the sealing performance of the cover 11 and the hydrogen pipe 1.

[0037] In further preferable embodiments of the present application, as shown in Figure 3 The side of the cover 11 close to the hydrogen pipe 1 is further provided with an outer ring groove 18, and the end of each sliding rod 6 close to the cover 11 is rotatably connected with a universal ball 19, and the side of the universal ball 19 close to the cover 11 is attached to the inner side wall of the outer ring groove 18.

[0038] In the present embodiment, the cover 11 in reference Figure 3 The side of the cover 11 close to the gas pipe is provided with the outer ring groove 18, and the end of each sliding rod 6 close to the cover 11 is rotatably connected with the universal ball 19, so that the universal ball 19 can roll at the end of the sliding rod 6 close to the cover 11, and when the cover 11 is threadedly connected with the hydrogen pipe 1, the universal ball 19 is rubbed, thereby reducing the friction between the cover 11 and the end of the sliding rod, and further reducing the friction loss of the sliding rod 6 and the cover 11, and improving the service life.

[0039] In further preferable embodiments of the present application, as shown in Figure 4 The side of the opening end of the hydrogen pipe 1 is connected with a closing disc 20, and the closing disc 20 is provided with an air inlet hole 21 corresponding to the air inlet pipe 2.

[0040] In the present embodiment, the closing disc 20 in reference Figure 4 is used to close the opening end of the hydrogen pipe 1, and the outer circumferential side thereof is abutted against the first sealing ring 14, so that the first sealing ring 14 can be more stably installed, and the air inlet hole 21 is further provided to facilitate the communication between the air inlet pipe 2 and the hydrogen pipe 1, thereby facilitating the input of hydrogen into the hydrogen pipe 1.

[0041] The principle of the above embodiment is that when the closing assembly 3 is connected to the open end of the hydrogen pipe 1, the slide rod 6 will be squeezed and slide in the recess 5, the slide rod 6 is dynamically sealed in the recess 5, so as to push the air pressure in the recess 5 into the air passage 7, the air pressure in the air passage 7 is increased, so as to push the gasket ring 9 in the annular groove 8, so that the gasket ring 9 squeezes the sealing assembly 10, so that the sealing assembly 10 can be sealed more tightly, so as to ensure the sealing of the hydrogen pipe 1 when the closing assembly 3 quickly closes the hydrogen pipe 1, so as to achieve the effect of quickly closing and sealing the hydrogen pipe 1, the cover 11 and the air inlet pipe 2, and avoid affecting the pressure test of the hydrogen energy pipe.

[0042] The embodiments of the specific embodiment are the preferred embodiments of the utility model, and are not limited to the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A pipe sealing device for hydrogen pipeline pressure testing, comprising a hydrogen pipe and an inlet pipe, characterized in that, One end of the hydrogen pipe is closed and the other end is open. The open end of the hydrogen pipe is provided with a sealing component and the pipe wall of the open end of the hydrogen pipe is provided with a fitting component. The bonding assembly includes several recesses, a sliding rod, an air passage, an annular groove, and a gasket ring. The several recesses are arranged in a circular array on the wall of the open end of the hydrogen pipe. A sliding rod is slidably connected to each recess and is dynamically sealed. An air passage is provided inside each recess. An annular groove is provided inside the wall of the open end of the hydrogen pipe. A gasket ring is slidably connected to the annular groove and is dynamically sealed. The air passage communicates with the annular groove. A sealing assembly is also provided at the open end of the hydrogen pipe.

2. The pipe sealing device for hydrogen energy pipe pressure testing according to claim 1, characterized in that, The sealing assembly includes a cap that is concave. A threaded portion is provided on the outer periphery of the opening end of the hydrogen pipe. The cap is threadedly connected to the hydrogen pipe through the threaded portion. The inlet pipe is fixedly connected to the center of the cap on the side away from the hydrogen pipe, and the end of the inlet pipe extends into the hydrogen pipe.

3. A pipe sealing device for hydrogen energy pipe pressure testing according to claim 2, characterized in that, The sealing assembly includes an inner annular groove, which is formed on the inner side wall of the hydrogen pipe opening. A first sealing ring is fixedly connected in the inner annular groove. The side of the first sealing ring fits against the side of the cap near the hydrogen pipe. The inner annular groove communicates with the annular groove. An auxiliary component is provided on the cap.

4. A pipe sealing device for hydrogen energy pipe pressure testing according to claim 3, characterized in that, The auxiliary component includes an inner groove, which is formed on the side of the cover near the hydrogen pipe. The inner groove is annular, and a second sealing ring is fixedly connected inside the inner groove. The side of the second sealing ring near the hydrogen pipe is in contact with the first sealing ring.

5. A pipe sealing device for hydrogen energy pipe pressure testing according to claim 4, characterized in that, The cap is provided with an outer ring groove on the side near the hydrogen pipe, and a number of sliding rods are rotatably connected to a universal ball on the end near the cap. The side of the universal ball near the cap is in contact with the inner wall of the outer ring groove.

6. A pipe sealing device for hydrogen energy pipe pressure testing according to claim 5, characterized in that, A sealing plate is connected to one side of the open end of the hydrogen pipe, and an inlet hole corresponding to the inlet pipe is opened on the sealing plate.

Images