Gas pipeline safety ball valve

Abstract

The utility model relates to the technical field of natural gas, and discloses a gas pipeline safety ball valve which comprises a pipe body, one end of the pipe body is fixedly connected with an outer threaded pipe, one end of the surface of the outer threaded pipe is fixedly connected with a flange plate A, and a second threaded hole is formed in the surface of the flange plate A; a fixing assembly is in threaded connection with the interior of the second threaded hole, an inner threaded pipe is in threaded connection with the surface of the outer threaded pipe, a sliding groove is formed in the inner threaded pipe, a sliding block is slidably connected with the interior of the sliding groove, a pipeline is fixedly connected with the inner wall of the sliding block, and a closed round sleeve is fixedly connected with the inner wall of the pipe body. And a ball valve is rotationally connected into the closed circular sleeve. According to the gas pipeline safety ball valve, through the arrangement of the threaded nail, the nut, the inner threaded pipe, the closed soft block and the connector pipe, when threaded holes of a flange plate B on the inner threaded pipe coincide with threaded holes of a flange plate A, a pipeline 7 is fixed through threaded connection, and the pipeline can be better disassembled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas, in particular to a safety ball valve for a gas pipeline. Background Art

[0002] As one of the important contents of municipal infrastructure, natural gas pipelines have the particularity of the transport medium, making the safety and reliability of gas pipelines an important goal in the pipeline operation, maintenance and overhaul process. At present, ball valves are commonly used as control valves in gas pipelines. Ball valves have the advantages of small fluid resistance, flexible opening and closing, good sealing, and long service life.

[0003] However, the existing gas pipeline safety ball valve has the following disadvantages:

[0004] (1) Most gas pipelines are fixed by welding, and the joints are prone to breakage, resulting in leakage of transported goods;

[0005] (2) The sealing effect of the ball valve is not very good, the service life is short, and long-term use will cause the valve to loosen.

[0006] Therefore, the utility model provides a gas pipeline safety ball valve. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The technical problem solved by the utility model is to provide a gas pipeline safety ball valve which is highly practical, can be easily operated and has a relatively simple structure, thereby solving the problems in the above-mentioned background technology that the docking port is easily broken and the valve may become loose after long-term use.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a gas pipeline safety ball valve, comprising a pipe body, one end of the pipe body is fixedly connected to an external threaded pipe, one end of the surface of the external threaded pipe is fixedly connected to an A flange, a second threaded hole is provided on the surface of the A flange, a fixing component is threadedly connected to the internal threaded hole, the surface of the external threaded pipe is threadedly connected to an internal threaded pipe, a slide groove is provided inside the internal threaded pipe, a slider is slidably connected to the inside of the slide groove, a pipeline is fixedly connected to the inner wall of the slider, a closed circular sleeve is fixedly connected to the inner wall of the closed circular sleeve, a ball valve is rotatably connected to the inside of the closed circular sleeve, a rotating rod is fixedly connected to the surface of the ball valve, a convex block is fixedly connected to the surface of the rotating rod, a sealing block is rotatably connected to the surface of the convex block, and a protective sleeve is fixedly connected to the surface of the sealing block.

[0011] Optionally, a circular groove is provided on the top of the convex block, and a turning handle is fixedly connected to the inside of the circular groove, so that the ball valve can be rotated by the turning handle.

[0012] Optionally, one end of the externally threaded tube is fixedly connected to a sealed soft block, and the inner wall of the sealed soft block is slidably connected to a joint pipe, so that a sealing effect is achieved through the sealed soft block.

[0013] Optionally, a groove is provided on the surface of the sealing block, the size of the groove is adapted to the convex block, and the convex block plays a role in venting air from the closed valve.

[0014] Optionally, a limiting groove is provided at one end of the pipe, the size of the limiting groove is adapted to the sealed soft block, and the limiting groove plays a role of squeezing the sealed soft block.

[0015] Optionally, a B flange is fixedly connected to the surface of the internally threaded pipe, and a second threaded hole is opened on the surface of the B flange, and the second threaded hole serves to insert the threaded nail 401.

[0016] (III) Beneficial effects

[0017] The utility model provides a gas pipeline safety ball valve, which has the following beneficial effects:

[0018] 1. The gas pipeline safety ball valve is provided with A flange, internal threaded pipe, threaded nail, nut, internal threaded pipe, sealed soft block and joint pipe. The staff connects the joint pipe with the pipeline, and connects the internal threaded pipe with the external threaded pipe so that the sealed soft block is squeezed by the groove of the pipeline. When the B flange on the internal threaded pipe coincides with the threaded hole of the A flange, the threaded nail is rotated through the A flange and the B flange, and the nut 402 is tightened. The pipeline 7 is fixed with a threaded connection, so that the pipeline can be better disassembled and replaced.

[0019] 2. The gas pipeline safety ball valve is provided with a closed circular sleeve, a ball valve, a rotating rod, a convex block, a sealing block and a turning handle. The turning handle is turned to rotate the convex block inside the sealing block, so that the rotating rod is rotated, and the ball valve at one end of the rotating rod is rotated. The closed circular sleeve inside the pipe body seals the gas generated by the edge gap when the ball valve rotates, so that the double-sealed system makes the valve more sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall split structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the pipeline structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the unpacking structure of the ball valve of the utility model.

[0024] In the figure: 1. pipe body; 2. external threaded pipe; 3. flange A; 4. fixing assembly; 401. threaded nail; 402. nut; 5. internal threaded pipe; 6. slider; 7. pipe; 8. sealed round sleeve; 9. ball valve; 10. rotating rod; 11. convex block; 12. sealing block; 13. protective cover; 14. turning handle; 15. sealed soft block; 17. flange B. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 4The utility model provides a technical solution: a gas pipeline safety ball valve, comprising a pipe body 1, one end of the pipe body 1 is fixedly connected with an externally threaded pipe 2, one end of the surface of the externally threaded pipe 2 is fixedly connected with an A flange 3, a second threaded hole is provided on the surface of the A flange 3, a fixing component 4 is threadedly connected to the inner thread of the second threaded hole, an internally threaded pipe 5 is threadedly connected to the surface of the externally threaded pipe 2, a sliding groove is provided inside the internally threaded pipe 5, a slider 6 is slidably connected to the inner wall of the sliding groove, a pipeline 7 is fixedly connected to the inner wall of the slider 6, through the arrangement of the A flange 3, the internally threaded pipe 5, the threaded nail 401, the nut 402, the internally threaded pipe 7, the sealing soft block 15 and the joint pipe 16, the staff docks the joint pipe 16 with the pipeline 7, and threads the internally threaded pipe 5 with the externally threaded pipe 2, so that the sealing soft block 15 is squeezed by the groove of the pipeline, when the B flange 17 on the internally threaded pipe 5 coincides with the threaded hole of the A flange 3, the threaded nail 401 is rotated through the A flange 3 and the B flange 17, and the nut 402 is screwed in. Tighten, the pipeline 7 is fixed with a threaded connection, so that the pipeline can be better disassembled and replaced. The inner wall of the pipe body 1 is fixedly connected with a closed circular sleeve 8, and the closed circular sleeve 8 is rotatably connected with a ball valve 9 inside. The surface of the ball valve 9 is fixedly connected with a rotating rod 10. Through the arrangement of the closed circular sleeve 8, the ball valve 9, the rotating rod 10, the convex block 11, the sealing block 12 and the turning handle 14, the turning handle 14 is turned to rotate the convex block 11 inside the sealing block 12, so that the rotating rod 10 is rotated, and the ball valve 9 at one end of the rotating rod 10 is rotated. The closed circular sleeve 8 inside the pipe body 1 seals the gas generated by the edge gap when the ball valve 9 rotates, so that the double-sealed system makes the valve more sealed. The surface of the rotating rod 10 is fixedly connected with the convex block 11, and the surface of the convex block 11 is rotatably connected with the sealing block 12. The surface of the sealing block 12 is fixedly connected with a protective sleeve 13. The material of the ball valve 9 is: stainless steel (good corrosion resistance and high temperature resistance, suitable for various media and conditions, including water, gas and corrosive liquids);

[0027] A circular groove is formed on the top of the convex block 11, and a turning handle 14 is fixedly connected to the inside of the circular groove. The turning handle 14 is used to rotate the ball valve 9.

[0028] One end of the external threaded tube 2 is fixedly connected with a sealing soft block 15, and the inner wall of the sealing soft block 15 is slidably connected with a joint tube 16, and the setting of the sealing soft block 15 plays a sealing role;

[0029] The surface of the sealing block 12 is provided with a groove, the size of which matches the convex block 11. The convex block 11 is provided to play the role of air release of the closed valve;

[0030] A limiting groove is provided at one end of the pipe 7, and the size of the limiting groove is adapted to the sealed soft block 15. The setting of the limiting groove plays a role in squeezing the sealed soft block 15;

[0031] The surface of the internal threaded pipe 5 is fixedly connected with a B flange 17 , and the surface of the B flange 17 is provided with a second threaded hole, through which the threaded nail 401 is inserted.

[0032] In the utility model, the working steps of the device are as follows:

[0033] Step 1: The staff connects the joint pipe 16 with the pipeline 7, and threads the internal threaded pipe 5 to the external threaded pipe 2, so that the sealing soft block 15 is squeezed by the groove of the pipeline. When the B flange 17 on the internal threaded pipe 5 coincides with the threaded hole of the A flange 3, the threaded nail 401 is rotated through the A flange 3 and the B flange 17, and then the nut 402 is tightened;

[0034] The second step: rotate the handle 14 to rotate the convex block 11 inside the sealing block 12, rotate the rotating rod 10, rotate the ball valve 9 at one end of the rotating rod 10, and the sealed circular sleeve 8 inside the tube body 1 to seal the gas generated in the edge gap when the ball valve 9 rotates.

[0035] Embodiment 1;

[0036] Please read Figure 2 The fixing assembly 4 includes a threaded nail 401 and a nut 402. The surface of the threaded nail 401 is threadedly connected with the nut 402. The setting of the threaded nail 401 and the nut 402 plays a role in fixing the A flange 3 and the B flange 17.

[0037] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0038] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas pipeline safety ball valve, comprising a pipe body (1), characterized in that: One end of the tube body (1) is fixedly connected to an externally threaded tube (2), one end of the surface of the externally threaded tube (2) is fixedly connected to an A flange (3), a second threaded hole is provided on the surface of the A flange (3), a fixing component (4) is threadedly connected to the interior of the second threaded hole, an internally threaded tube (5) is threadedly connected to the surface of the externally threaded tube (2), a sliding groove is provided inside the internally threaded tube (5), a slider (6) is slidably connected to the interior of the sliding groove, a pipeline (7) is fixedly connected to the inner wall of the slider (6), a sealed circular sleeve (8) is fixedly connected to the inner wall of the tube body (1), a ball valve (9) is rotatably connected to the interior of the sealed circular sleeve (8), a rotating rod (10) is fixedly connected to the surface of the ball valve (9), a convex block (11) is fixedly connected to the surface of the rotating rod (10), a sealing block (12) is rotatably connected to the surface of the convex block (11), a protective sleeve (13) is fixedly connected to the surface of the sealing block (12).

2. A gas pipeline safety ball valve according to claim 1, characterized in that: A circular groove is formed on the top of the convex block (11), and a turning handle (14) is fixedly connected inside the circular groove.

3. A gas pipeline safety ball valve according to claim 1, characterized in that: One end of the externally threaded tube (2) is fixedly connected to a sealed soft block (15), and the inner wall of the sealed soft block (15) is slidably connected to a joint tube (16).

4. A gas pipeline safety ball valve according to claim 1, characterized in that: A groove is provided on the surface of the sealing block (12), and the size of the groove is adapted to that of the convex block (11).

5. A gas pipeline safety ball valve according to claim 1, characterized in that: A limiting groove is provided at one end of the pipe (7), and the size of the limiting groove is adapted to the sealed soft block (15).

6. A gas pipeline safety ball valve according to claim 1, characterized in that: A B flange (17) is fixedly connected to the surface of the internally threaded pipe (5), and a second threaded hole is opened on the surface of the B flange (17).

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