Explosion-proof structure of chemical pipeline

Abstract

The utility model discloses a chemical pipeline explosion-proof structure, and particularly relates to the technical field of chemical pipeline connection explosion-proof, the chemical pipeline explosion-proof structure comprises a first chemical pipeline and a second chemical pipeline, the outer sides of the end parts of the first chemical pipeline and the second chemical pipeline, which are contacted with each other, are respectively and fixedly provided with a flange plate, and the outer side of the outer end of each flange plate is a cambered surface; limiting grooves are formed in the middles of the inner ends of the anti-explosion connecting frames, and the two side walls of the inner ends of the limiting grooves are arc faces. Multiple sealing protection is carried out on the joint of the first chemical pipeline and the second chemical pipeline, the situation that chemical raw materials leak at the joint of the first chemical pipeline and the second chemical pipeline is effectively avoided, then the probability of fire disasters or explosions of the chemical pipelines is reduced, the fireproof and explosion-proof performance is good, and the service life of the chemical pipelines is prolonged. And the two anti-explosion connecting frames and the multiple reinforcing rods can reinforce and protect the connecting position, and the anti-explosion performance of the pipeline is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof connection of chemical pipelines, in particular to an explosion-proof structure of a chemical pipeline. Background Art

[0002] Chemical pipelines, namely steel-plastic chemical pipelines, are a new type of pipe material. With welded steel pipes as the middle layer, heavy-duty anti-corrosion epoxy resin plastics are coated inside and outside, and special hot melt adhesives are used to compound the pipes through extrusion molding. The main material of steel-plastic chemical pipes is ultra-high molecular weight polyethylene, which is a thermoplastic engineering plastic with an average molecular weight greater than 2 million, which is polymerized by ethylene and butadiene monomers under the action of catalysts.

[0003] At present, when chemical pipelines are actually used, the chemical raw materials transported inside may be flammable and explosive. If there is a leak at the pipeline connection, these leaked chemical raw materials may cause fire or even explosion when exposed to open flames. The existing chemical pipeline connections are only connected by flanges and bolts, the connection is not tight enough, and the fire and explosion resistance is not good enough. Utility Model Content

[0004] The purpose of the utility model is to provide a chemical pipeline explosion-proof structure to solve the above-mentioned technical deficiencies.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions: a chemical pipeline explosion-proof structure, comprising:

[0006] A first chemical pipeline and a second chemical pipeline, wherein a flange is fixedly provided on the outer side of the ends of the first chemical pipeline and the second chemical pipeline that contact each other, the outer side of the outer end of the flange is an arc surface, a first sealing groove is provided on the inner side of the flange, a first sealing gasket is fixedly provided inside the first sealing groove, and the two first sealing gaskets are in contact with each other;

[0007] Two explosion-proof connection frames, the two explosion-proof connection frames are respectively arranged at the top and bottom of the two flanges, a limiting groove is provided in the middle of the inner end of the explosion-proof connection frame, both side walls of the inner end of the limiting groove are arc surfaces, a second sealing gasket is fixedly arranged inside the limiting groove, and the flange is arranged inside the limiting groove and its outer end is in contact with the inner end of the second sealing gasket;

[0008] Four extension blocks are respectively fixed at both ends of the two explosion-proof connecting frames, the bottom ends of the two extension blocks at the top are rotatably connected with a threaded rod, the top end of the threaded rod passes through the bottom end of the extension block and is rotatably connected to the extension block, a hexagonal rotating block is fixed to the top of the threaded rod, and threaded holes are opened on the two extension blocks at the bottom, the bottom ends of the threaded rod pass through the inside of the threaded hole and are threadedly connected to the threaded hole.

[0009] Preferably, two second sealing grooves are provided at the inner end of the explosion-proof connecting frame, and the two second sealing grooves are respectively arranged on both sides of the limiting groove, and a third sealing gasket is fixedly provided inside the second sealing groove, and the inner ends of the two third sealing gaskets are respectively in contact with the outer ends of the first chemical pipeline and the second chemical pipeline, so as to facilitate sealing protection of the connection between the first chemical pipeline and the second chemical pipeline.

[0010] Preferably, a third sealing groove is opened on the inner side of the extension block, a fourth sealing gasket is fixed inside the third sealing groove, two fourth sealing gaskets are in contact with each other, and the third sealing groove and the fourth sealing gasket are both U-shaped, which is convenient for sealing and protecting the connection between the two explosion-proof connecting frames.

[0011] Preferably, two plug-in rods are fixedly provided on the top of the two extension blocks at the bottom, and the two plug-in rods are respectively arranged on both sides of the threaded hole, and two plug-in grooves are provided on the two extension blocks at the top, and the two plug-in grooves are respectively arranged on both sides of the threaded rod, and the top of the plug-in rod passes through the inside of the plug-in groove to facilitate the connection of the two extension blocks.

[0012] Preferably, a cavity is opened inside the top end of the connecting rod, a limit plate is provided inside the cavity, a limit block is fixedly provided on the outside of the limit plate, the bottom end of the limit block contacts the top end of the extension block, the top end of the limit block is an arc surface, a spring is fixedly provided on the inside of the limit plate, one end of the spring is fixedly connected to the inner wall of the cavity, so as to facilitate the limiting and fixing of the extension block.

[0013] Preferably, a plurality of reinforcing rods are provided on the outside of the explosion-proof connection frame, and the two ends of the plurality of reinforcing rods distributed up and down are respectively fixedly connected to the top end of the extension block at the top and the bottom end of the extension block at the bottom, so as to facilitate the enhanced protection of the explosion-proof connection frame.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] By performing multiple sealing protections on the connection between the first chemical pipeline and the second chemical pipeline, leakage of chemical raw materials at the connection between the first chemical pipeline and the second chemical pipeline is effectively avoided, thereby reducing the probability of fire or explosion in the chemical pipeline. The fire and explosion resistance are good, and the two explosion-proof connection frames and multiple reinforcement rods can strengthen the protection of the connection, further improving the explosion-proof performance of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an overall exploded view of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall three-dimensional cross-sectional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of an explosion-proof connection frame of the utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the explosion-proof connection frame and the extension block of the utility model;

[0022] Figure 6 It is a schematic diagram of a three-dimensional sectional structure of the plug-in rod of the utility model.

[0023] Description of reference numerals:

[0024] 1. The first chemical pipeline; 2. The second chemical pipeline; 3. The flange; 4. The first sealing groove; 5. The first sealing gasket; 6. The explosion-proof connection frame; 7. The limiting groove; 8. The second sealing gasket; 9. The extension block; 10. The threaded rod; 11. The hexagonal rotating block; 12. The threaded hole; 13. The second sealing groove; 14. The third sealing gasket; 15. The third sealing groove; 16. The fourth sealing gasket; 17. The plug-in rod; 18. The plug-in groove; 19. The cavity; 20. The limiting plate; 21. The limiting block; 22. The spring; 23. The reinforcing rod. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figures 1 to 6 A chemical pipeline explosion-proof structure shown includes:

[0027] A first chemical pipeline 1 and a second chemical pipeline 2, a flange 3 is fixedly provided on the outer side of the ends of the first chemical pipeline 1 and the second chemical pipeline 2 that contact each other, the outer side of the outer end of the flange 3 is an arc surface, a first sealing groove 4 is opened on the inner side of the flange 3, a first sealing gasket 5 is fixedly provided inside the first sealing groove 4, and the two first sealing gaskets 5 contact each other;

[0028] Two explosion-proof connection frames 6, the two explosion-proof connection frames 6 are respectively arranged at the top and bottom ends of the two flanges 3, a limiting groove 7 is provided in the middle of the inner end of the explosion-proof connection frame 6, both side walls of the inner end of the limiting groove 7 are arc surfaces, a second sealing gasket 8 is fixedly arranged inside the limiting groove 7, and the flange 3 is arranged inside the limiting groove 7 and its outer end is in contact with the inner end of the second sealing gasket 8;

[0029] Four extension blocks 9 are respectively fixed at both ends of the two explosion-proof connecting frames 6. The bottom ends of the two extension blocks 9 at the top are rotatably connected to a threaded rod 10. The top end of the threaded rod 10 passes through the bottom end of the extension block 9 and is rotatably connected to the extension block 9. A hexagonal rotating block 11 is fixed to the top of the threaded rod 10. Threaded holes 12 are opened on the two extension blocks 9 at the bottom. The bottom ends of the threaded rod 10 pass through the inside of the threaded hole 12 and are threadedly connected to the threaded hole 12.

[0030] Two second sealing grooves 13 are provided at the inner end of the explosion-proof connecting frame 6, and the two second sealing grooves 13 are respectively provided on both sides of the limiting groove 7, and a third sealing gasket 14 is fixedly provided inside the second sealing groove 13, and the inner ends of the two third sealing gaskets 14 are respectively in contact with the outer ends of the first chemical pipeline 1 and the second chemical pipeline 2, and a third sealing groove 15 is provided on the inner side of the extension block 9, and a fourth sealing gasket 16 is fixedly provided inside the third sealing groove 15, and the two fourth sealing gaskets 16 are in contact with each other, and the third sealing groove 15 and the fourth sealing gasket 16 are both U-shaped.

[0031] Two plug-in rods 17 are fixedly provided on the top of the two extension blocks 9 at the bottom, and the two plug-in rods 17 are respectively arranged on both sides of the threaded hole 12; two plug-in slots 18 are provided on the two extension blocks 9 at the top, and the two plug-in slots 18 are respectively arranged on both sides of the threaded rod 10; the top of the plug-in rod 17 passes through the inside of the plug-in slot 18; a cavity 19 is provided inside the top of the plug-in rod 17; a limit plate 20 is provided inside the cavity 19; a limit block 21 is fixedly provided on the outside of the limit plate 20; the bottom end of the limit block 21 contacts with the top of the extension block 9 at the top; the top of the limit block 21 is an arc surface; a spring 22 is fixedly provided on the inside of the limit plate 20; one end of the spring 22 is fixedly connected to the inner wall of the cavity 19.

[0032] A plurality of reinforcing rods 23 are disposed outside the explosion-proof connection frame 6 , and two ends of the plurality of reinforcing rods 23 distributed up and down are fixedly connected to the top end of the top extension block 9 and the bottom end of the bottom extension block 9 respectively.

[0033] Align the ends of the first chemical pipeline 1 and the second chemical pipeline 2 so that the two flanges 3 are tightly together, and place the two explosion-proof connecting frames 6 on the top and bottom ends of the two flanges 3 respectively, so that the arc surfaces on the outer sides of the outer ends of the two flanges 3 are in contact with the arc surfaces of the two side walls of the inner end of the limiting groove 7. At this time, one end of the threaded rod 10 will enter the threaded hole 12. Use an external wrench to drive the hexagonal rotating block 11 to rotate, and the hexagonal rotating block 11 drives the threaded rod 10 to rotate. The threaded rod 10 will rotate and enter the threaded hole 12. In this way, the two explosion-proof connecting frames 6 can be brought close to each other, and the two arc surfaces are squeezed against each other. In this way, when the flange 3 enters the limiting groove 7, the two flanges 3 will be tightly together, and the two extension blocks 9 distributed above and below will contact each other. At this time The plug-in rod 17 will be inserted into the plug-in slot 18, and the arc surface of the limit block 21 will first contact the inner wall of the plug-in slot 18. The limit block 21 will enter the cavity 19 under the pressure of the inner wall. When one end of the plug-in rod 17 completely passes through the plug-in slot 18, the limit block 21 will return to its original position under the elastic force of the spring 22. In this way, the threaded rod 10 cooperates with the plug-in rod 17 to connect and fix the upper and lower extension blocks 9 together, and then fix the two explosion-proof connecting frames 6 together. At this time, the connection between the first chemical pipeline 1 and the second chemical pipeline 2 will have multiple sealing protections of the first sealing gasket 5, the second sealing gasket 8, the third sealing gasket 14 and the fourth sealing gasket 16, and the sealing protection is better, and the reinforcing rod 23 and the two explosion-proof connecting frames 6 will provide explosion-proof protection for the connection.

[0034] The utility model effectively avoids leakage of chemical raw materials at the connection of the first chemical pipeline 1 and the second chemical pipeline 2 by performing multiple sealing protections on the connection of the first chemical pipeline 1 and the second chemical pipeline 2, thereby reducing the probability of fire or explosion in the chemical pipeline, and has good fire and explosion resistance. The two explosion-proof connection frames 6 and multiple reinforcing rods 23 can strengthen the protection of the connection, further improving the explosion-proof performance of the pipeline. This implementation specifically solves the problem that when the chemical pipeline in the prior art is actually used, the chemical raw materials transported inside may be flammable and explosive. If leakage occurs at the pipeline connection, these leaked chemical raw materials may cause fire or even explosion when encountering open flames. The existing chemical pipeline connection is only connected by flanges and bolts, and the connection tightness is not enough, and the fire and explosion resistance is not good enough.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A chemical pipeline explosion-proof structure, characterized in that: include: A first chemical pipeline (1) and a second chemical pipeline (2), wherein a flange (3) is fixedly provided on the outer side of the ends of the first chemical pipeline (1) and the second chemical pipeline (2) that contact each other, the outer side of the outer end of the flange (3) is an arc surface, a first sealing groove (4) is provided on the inner side of the flange (3), a first sealing gasket (5) is fixedly provided inside the first sealing groove (4), and two first sealing gaskets (5) contact each other; Two explosion-proof connection frames (6), the two explosion-proof connection frames (6) are respectively arranged at the top and bottom ends of the two flanges (3), a limiting groove (7) is provided in the middle of the inner end of the explosion-proof connection frame (6), both side walls of the inner end of the limiting groove (7) are arc surfaces, a second sealing gasket (8) is fixedly arranged inside the limiting groove (7), and the flange (3) is arranged inside the limiting groove (7) and its outer end is in contact with the inner end of the second sealing gasket (8); Four extension blocks (9), the four extension blocks (9) are respectively fixed at the two ends of the two explosion-proof connection frames (6), the bottom ends of the two extension blocks (9) at the top are rotatably connected to a threaded rod (10), the top end of the threaded rod (10) passes through the bottom end of the extension block (9) and is rotatably connected to the extension block (9), the top end of the threaded rod (10) is fixed with a hexagonal rotating block (11), the two extension blocks (9) at the bottom are each provided with a threaded hole (12), the bottom end of the threaded rod (10) passes through the inside of the threaded hole (12) and is threadedly connected to the threaded hole (12).

2. The explosion-proof structure of a chemical pipeline according to claim 1, characterized in that: The explosion-proof connection frame (6) has two second sealing grooves (13) at its inner end, the two second sealing grooves (13) being respectively arranged on both sides of the limiting groove (7), a third sealing gasket (14) being fixedly arranged inside the second sealing groove (13), the inner ends of the two third sealing gaskets (14) being respectively in contact with the outer ends of the first chemical pipeline (1) and the second chemical pipeline (2).

3. The explosion-proof structure of a chemical pipeline according to claim 1, characterized in that: A third sealing groove (15) is provided inside the extension block (9), a fourth sealing gasket (16) is fixed inside the third sealing groove (15), two fourth sealing gaskets (16) are in contact with each other, and the third sealing groove (15) and the fourth sealing gasket (16) are both U-shaped.

4. The explosion-proof structure of a chemical pipeline according to claim 1, characterized in that: Two plug-in rods (17) are fixedly provided on the top of the two extension blocks (9) at the bottom, and the two plug-in rods (17) are respectively arranged on both sides of the threaded hole (12); two plug-in grooves (18) are provided on the two extension blocks (9) at the top, and the two plug-in grooves (18) are respectively arranged on both sides of the threaded rod (10), and the top of the plug-in rod (17) passes through the inside of the plug-in groove (18).

5. The explosion-proof structure of a chemical pipeline according to claim 4, characterized in that: A cavity (19) is provided inside the top of the plug rod (17), a limit plate (20) is provided inside the cavity (19), a limit block (21) is fixedly provided outside the limit plate (20), the bottom end of the limit block (21) contacts the top end of the extension block (9) at the top, the top end of the limit block (21) is an arc surface, a spring (22) is fixedly provided inside the limit plate (20), and one end of the spring (22) is fixedly connected to the inner wall of the cavity (19).

6. The explosion-proof structure of a chemical pipeline according to claim 1, characterized in that: A plurality of reinforcing rods (23) are arranged on the outside of the explosion-proof connection frame (6), and the two ends of the plurality of reinforcing rods (23) distributed up and down are respectively fixedly connected to the top end of the top extension block (9) and the bottom end of the bottom extension block (9).

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