High-pressure hydrogenation gate valve

Abstract

The utility model relates to the technical field of high-pressure gate valve devices, in particular to a high-pressure hydrogenation gate valve which comprises a base, a valve pipe is arranged in the middle of the top end of the base, threaded structures are arranged on the two sides of the valve pipe, a blocking groove is formed in the top end of the middle of the valve pipe, and the valve pipe is fixedly connected with an external pipe through an adapter pipe. The guide rod air cylinder comprises a bottom frame fixed to the base and an air cylinder fixed to the top end of the bottom frame, a guide rod is arranged in the air cylinder, a plug is fixed to the bottom end of the guide rod and arranged in a plug groove, two sets of clamping rings are fixed to the front end of an external pipe, the external pipe is arranged on the outer side of an adapter pipe in a sleeving mode, and a limiting ring is arranged on the inner side wall of one end of the adapter pipe. The adapter pipe is arranged in the rotating groove in a sleeved mode through the limiting ring and is fixedly connected with the two ends of the valve pipe in a meshed mode through the adapter pipe structure, the two ends of the valve pipe can be sleeved with the clamping ring on the outer side of the external pipe, the connecting effect is achieved, and hydrogen leakage can be effectively prevented through the double-layer sleeving structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure gate valve device technical field, concretely relates to high pressure hydrogenation gate valve. BACKGROUND

[0002] Generally large diameter high pressure hydrogenation gate valve adopts self-tight sealing structure, is by valve body, gate, valve stem, sealing ring, stuffing box, support, bolt, packing, valve stem nut, bearing, hand wheel etc. parts composition. Its working principle is to rotate hand wheel drive valve stem nut, again by valve stem nut drive valve stem and gate along the vertical direction of pipeline center line up and down and realize the function of opening and closing, mainly plays the flow of cut-off being transported medium on the pipeline.

[0003] Because hydrogen is not only flammable and explosive gas, and hydrogen enters metal can make metal produce brittleness and lose strength and form hydrogen induced cracking, and have a safe accident. The existing hydrogenation special gate valve is generally connected with hydrogen pipeline through the threaded connection mode, the sealing property of this connection mode is not good, hydrogen is easy to leak, and the existing gate valve is opened or closed by manually rotating the valve, because hydrogen is flammable and easy to explode, so this mode has certain dangerousness. CONTENT OF THE UTILITY MODEL

[0004] TECHNICAL PROBLEM SOLVED

[0005] In view of the above-mentioned shortcomings of prior art, the utility model provides high pressure hydrogenation gate valve, can effectively solve the problem that prior art is opened or closed by manually rotating the valve, because hydrogen is flammable and easy to explode, so this mode has certain dangerousness.

[0006] TECHNICAL SCHEME

[0007] To realize above-mentioned purpose, the utility model is realized through following technical scheme:

[0008] The utility model provides high pressure hydrogenation gate valve, including base, the top middle part of base is provided with valve pipe, the both sides of valve pipe are all set up with threaded structure, and the middle top of valve pipe is set up with the plug groove, and is connected with external connection pipe through adapter pipe and is fixed, the top of base is provided with guide rod cylinder, the guide rod cylinder includes the base frame fixed on base and the cylinder fixed on the top of base, the cylinder is provided with guide rod, the bottom of guide rod is fixed with plug, the plug is set up in plug groove, the front end of external connection pipe is fixed with two groups of snap rings, and there is gap between two groups of snap rings, forms the rotation groove, the external connection pipe is set on the outside of adapter pipe, and the one end inner side wall of adapter pipe is provided with limit ring, the adapter pipe is set in rotation groove through limit ring.

[0009] Further, the guide rod passes through the perforation in the middle of the chassis, the plug is arranged in the chassis, the plug groove is semicircular in cross section, the bottom end of the plug is also semicircular in cross section, and the size of the plug is matched with the size of the plug groove.

[0010] Further, the inner side wall of the limiting ring is provided with a threaded structure, and the limiting ring is engaged with one end of the valve pipe.

[0011] Further, the front end of the external pipe is an acceleration head, and the outer diameter of the acceleration head is smaller than the inner diameter.

[0012] Further, one end of the air cylinder is in communication with an external air source.

[0013] Further, the plug is made of hard plastic material.

[0014] Beneficial effects

[0015] Compared with the known prior art, the technical scheme of the utility model has the following beneficial effects:

[0016] The guide rod cylinder structure is arranged, the air cylinder structure is in communication with an external air source, the guide rod structure and the plug at the bottom are driven to move, the plug is made of hard plastic material, the problem of spark generation during movement can be effectively prevented, the guide rod cylinder is used to replace manual opening and closing of the valve, the safety of the staff is improved, when hydrogen needs to be added, the air cylinder is started by the external controller, the guide rod and the plug are driven to move upwards, the hydrogen is discharged along the pipeline, and hydrogen addition work is performed, the adapter pipe structure and the external pipe structure are connected and fixed on both sides of the valve pipe, the adapter pipe and the limiting ring structure arranged on the outer side of the external pipe can rotate in the rotating groove in the two sets of clamping rings, the adapter pipe structure is engaged and fixed with both ends of the valve pipe, the both ends of the valve pipe can be sleeved with the outer clamping ring of the external pipe, the connection effect is achieved, the double sleeving structure can effectively prevent hydrogen leakage, the threaded connection in the utility model is on the outer side of the pipeline and does not contact with the gas, and no dangerous situation occurs. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The structure of the utility model is schematically shown in the drawings.

[0019] Figure 2 is a structure split diagram one of the utility model;

[0020] Figure 3 is a structure split diagram two of the utility model;

[0021] Figure 4 is a structure diagram of adapter pipe and external pipe of the utility model.

[0022] The numbers in the drawing respectively represent: 1, base; 2, valve pipe; 21, plug groove; 3, guide rod cylinder; 31, base frame; 32, perforation; 33, cylinder; 34, guide rod; 35, plug; 4, external pipe; 41, snap ring; 42, rotating groove; 43, accelerating head; 5, adapter pipe; 51, limiting ring. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] The utility model will be further described below in conjunction with embodiments.

[0025] Embodiment: high pressure hydrogenation gate valve, refer to the attached Figure 1 -attached Figure 4 , including base 1, the top middle part of base 1 is provided with valve pipe 2, both sides of valve pipe 2 are provided with screw structure, and the middle top end of valve pipe 2 is provided with plug groove 21, and is connected and fixed with external pipe 4 through adapter pipe 5, the top end of base 1 is provided with guide rod cylinder 3, guide rod cylinder 3 includes base frame 31 fixed on base 1 and cylinder 33 fixed on the top end of base frame 31, guide rod 34 is arranged in cylinder 33, plug 35 is fixed on the bottom end of guide rod 34, plug 35 is arranged in plug groove 21, the front end of external pipe 4 is fixed with two groups of snap rings 41, there is gap between two groups of snap rings 41, forming rotating groove 42, external pipe 4 is sleeved on the outside of adapter pipe 5, and the inner side wall of one end of adapter pipe 5 is provided with limiting ring 51, adapter pipe 5 is sleeved in rotating groove 42 through limiting ring 51;

[0026] The guide rod 34 penetrates the through hole 32 in the middle of the chassis 31, the plug 35 is arranged in the chassis 31, the cross section of the plug groove 21 is semicircular, the bottom end cross section of the plug 35 is also semicircular, and the size of the plug 35 is matched with the size of the plug groove 21; the guide rod cylinder 3 structure is arranged, the cylinder 33 structure is communicated with the external air source, the guide rod 34 structure and the plug 35 at the bottom are driven to move, the plug 35 is made of hard plastic material, and the problem of spark generated in the moving process can be effectively prevented, the guide rod cylinder 3 is used to replace manual opening and closing of the valve, and the safety of the staff is improved, when hydrogen needs to be added, the cylinder 33 is started by the external controller, the guide rod 34 and the plug 35 are driven to move upwards, hydrogen is discharged along the pipeline, and hydrogen adding work is performed.

[0027] The inner side wall of the limiting ring 51 is provided with a threaded structure, and the limiting ring 51 is engaged and connected with one end of the valve pipe 2; the front end of the external pipe 4 is an acceleration head 43, the outer diameter of the acceleration head 43 is smaller than the inner diameter; one end of the cylinder 33 is communicated with the external air source; the plug 35 is made of hard plastic material; the two sides of the valve pipe 2 are connected and fixed with the external pipe 4 through the adapter pipe 5 structure, in the two, the adapter pipe 5 and the limiting ring 51 structure arranged on the outer side of the external pipe 4 can rotate in the rotating groove 42 of the two sets of clamping rings 41, the adapter pipe 5 structure is engaged and fixed with both ends of the valve pipe 2, and both ends of the valve pipe 2 can be sleeved with the outer clamping ring 41 of the external pipe 4, so that the connection effect is achieved, the double-layer sleeving structure can effectively prevent hydrogen leakage.

[0028] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced equivalently; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. High-pressure hydrogenation gate valve, characterized in that The utility model provides a valve pipe (2) is provided with in the middle of the top of base (1), both sides of valve pipe (2) are all provided with threaded structure, and the middle top of valve pipe (2) is provided with the plug groove (21), and is connected fixed with external pipe (4) through adapter pipe (5), the top of base (1) is provided with guide rod air cylinder (3), guide rod air cylinder (3) includes the bottom frame (31) fixed on base (1) and the air cylinder (33) fixed on the top of bottom frame (31), the air cylinder (33) is provided with guide rod (34), the bottom of guide rod (34) is fixed with the plug (35), the plug (35) is arranged in plug groove (21), the front end of external pipe (4) is fixed with two groups of snap ring (41), and there is gap between two groups of snap ring (41), forms the rotation groove (42), external pipe (4) is set on the outside of adapter pipe (5), and the one end inner wall of adapter pipe (5) is provided with the limit ring (51), and adapter pipe (5) is set in rotation groove (42) through limit ring (51).

2. The high pressure hydrogenation gate valve according to claim 1, characterized in that The guide rod (34) penetrates the perforation (32) of the middle part of the bottom frame (31), the plug (35) is arranged in the bottom frame (31), the cross section of the plug groove (21) is semicircular, and the bottom end cross section of the plug (35) is also semicircular, and the size of the plug (35) is adapted to the size of the plug groove (21).

3. The high pressure hydrogenation gate valve of claim 1, wherein, The inner wall of the limit ring (51) is provided with a threaded structure, and the limit ring (51) is engaged with one end of the valve pipe (2).

4. The high pressure hydrogenation gate valve of claim 1, wherein, The front end of the external pipe (4) is an acceleration head (43), and the outer diameter of the acceleration head (43) is smaller than the inner diameter.

5. The high pressure hydrogenation gate valve according to claim 4, characterized in that, One end of the air cylinder (33) is in communication with an external gas source.

6. The high pressure hydrogenation gate valve of claim 1, wherein, The plug (35) is made of hard plastic.

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