Automatic pressure reduction explosion-proof seamless steel pipe

Abstract

The utility model discloses an automatic pressure reduction explosion-proof seamless steel tube, which relates to the field of seamless steel tubes and comprises a seamless steel tube main body, a central cable is arranged in the seamless steel tube main body and is positioned at the central position in the seamless steel tube main body, and a plurality of bulges are fixedly arranged at the outer end of the central cable. Knots are tied at the two ends of the central cable, and the length of the central cable between the two knots is consistent with the length of the used seamless steel pipe main body. The rubber ring is extruded by high pressure to deform, so that the central cable is driven by the driving rod to move, the movement of the central cable affects the position of a blockage, the blockage is loosened, the blockage dredging effect is achieved, after the blockage is dredged, the pressure in the seamless steel pipe main body is also reduced, and the pressure reduction effect is achieved; and the explosion of the seamless steel tube main body due to overlarge pressure is fundamentally avoided, and the explosion-proof effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipes, specifically an automatic pressure-reducing explosion-proof seamless steel pipe. Background Technology

[0002] Seamless steel pipes refer to steel pipes without weld seams, formed from a single piece of round steel. Due to their seamless nature, their strength is much greater than that of ordinary steel pipes. Therefore, seamless steel pipes can be used as pipelines to transport some high-pressure fluids and prevent pipeline rupture and leakage.

[0003] During the transportation of high-pressure fluids, seamless steel pipes mainly bear the pressure from the fluid inside the pipe. In order to improve the explosion-proof performance, existing technologies generally reinforce the pipe from the inside or reduce the additional impact of fluid temperature on the pipe through heat insulation, such as a high-pressure explosion-proof seamless steel pipe with announcement number CN219841167U.

[0004] Under normal circumstances, as long as the fluid can flow normally inside the seamless steel pipe, the seamless steel pipe is unlikely to be damaged by high pressure. The cause of damage is often blockage inside the pipe, which causes the internal pressure to soar. However, the current technology simply reinforces the seamless steel pipe without reducing the pressure when it rises, which makes it difficult to solve the problem at its root and the explosion-proof performance needs to be improved. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic pressure-reducing explosion-proof seamless steel pipe. By setting a central cable inside the seamless steel pipe body, a drive rod moves the central cable, which loosens the blockage and clears it. After the blockage is cleared, the pressure is reduced, and the seamless steel pipe body is fundamentally prevented from bursting due to excessive pressure, thus improving the explosion-proof effect and effectively solving the problems in the background technology.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatic pressure reduction explosion-proof seamless steel pipe, comprising a seamless steel pipe body, a central cable provided inside the seamless steel pipe body, the central cable being located at the center of the seamless steel pipe body, and a plurality of protrusions fixedly provided at the outer end of the central cable, the protrusions being able to increase the friction of the central cable;

[0007] The two ends of the central cable are tied with knots, and the length of the central cable between the two knots is the same as the length of the seamless steel pipe body used.

[0008] Multiple annular protrusions are fixedly provided on the inner wall of the seamless steel pipe body. A rubber ring is fixedly provided on one side of the annular protrusion. The outer end of the rubber ring is in contact with the inner wall of the seamless steel pipe body. Multiple drive rods corresponding to the rubber rings are fixedly provided on the outer end of the central cable. The top end of the drive rod is fixedly connected to the end of the rubber ring away from the annular protrusion.

[0009] Furthermore, multiple fixing plates are fixedly provided on the inner wall of the seamless steel pipe body, and a collar is fixedly provided at the bottom end of the fixing plate. The collar is sleeved on the outer end of the central cable, and the inner diameter of the collar is larger than the outer diameter of the central cable. The collar can fix and restrict the central cable.

[0010] Furthermore, a protective layer is fixedly provided on the inner wall of the seamless steel pipe body. The protective layer includes a heat-insulating coating sprayed on the inner wall of the seamless steel pipe body. The main component of the heat-insulating coating is epoxy resin, which can reduce the efficiency of heat transfer. An anti-corrosion coating is sprayed on the inner side of the heat-insulating coating. The main component of the anti-corrosion coating is acrylic resin, which can reduce corrosion to the inner wall of the seamless steel pipe body. An wear-resistant coating is sprayed on the outer end of the anti-corrosion coating. The main component of the wear-resistant coating is alumina, which has stable chemical properties and is not easily worn.

[0011] Furthermore, a guide assembly is fitted onto the outer end of the seamless steel pipe body. The guide assembly includes an outer tube body fitted onto the outer end of the seamless steel pipe body. The inner diameter of the outer tube body is larger than the outer diameter of the seamless steel pipe body, and there is a certain gap between the two.

[0012] Furthermore, multiple washers are fixedly provided on the inner wall of the outer tube body, which are in contact with the outer end of the seamless steel pipe body. The washers have notches. Multiple fastening bolts are provided at the bottom end of the outer tube body through threads. Tightening the fastening bolts can fix the position of the outer tube body at the outer end of the seamless steel pipe body.

[0013] Furthermore, the outer end of the outer tube has multiple notches arranged in a straight line, and a buffer mesh is embedded in the notches. The buffer mesh can buffer the fluid when it is ejected outward.

[0014] Compared with the prior art, this utility model provides an automatic pressure reduction explosion-proof seamless steel pipe, which has the following beneficial effects:

[0015] By installing a central cable inside the seamless steel pipe body, when high pressure is generated inside the seamless steel pipe body due to blockage, the high pressure squeezes the rubber ring, causing it to deform. This deformation, in turn, drives the central cable to move via a drive rod. The movement of the central cable affects the location of the blockage, loosening the blockage and thus clearing it. After the blockage is cleared, the pressure inside the seamless steel pipe body will also decrease, thus reducing pressure and fundamentally preventing the seamless steel pipe body from bursting due to excessive pressure, thereby improving the explosion-proof effect. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the seamless steel pipe body of this utility model;

[0018] Figure 3 This is a structural diagram of the central cable of this utility model;

[0019] Figure 4 This is a structural diagram of the internal structure of the guide component of this utility model;

[0020] Figure 5 This is a cross-sectional view of the protective layer of this utility model.

[0021] In the diagram: 1. Seamless steel pipe body; 2. Central cable; 3. Guide assembly; 301. Buffer net; 302. Outer pipe body; 303. Fastening bolt; 304. Washer; 4. Heat insulation coating; 5. Anti-corrosion coating; 6. Wear-resistant coating; 7. Protrusion; 8. Collar; 9. Fixing plate; 10. Drive rod; 11. Annular protrusion; 12. Rubber ring. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model readily understandable, the present utility model will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] like Figure 1-5 As shown, this utility model provides an automatic pressure reduction explosion-proof seamless steel pipe, including a seamless steel pipe body 1. A central cable 2 is provided inside the seamless steel pipe body 1. The central cable 2 is located at the center inside the seamless steel pipe body 1. A plurality of protrusions 7 are fixedly provided at the outer end of the central cable 2. The protrusions 7 can increase the friction of the central cable 2.

[0024] The two ends of the central cable 2 are tied with knots, and the length of the central cable 2 between the two knots is the same as the length of the seamless steel pipe body 1 used.

[0025] Multiple annular protrusions 11 are fixedly provided on the inner wall of the seamless steel pipe body 1. A rubber ring 12 is fixedly provided on one side of the annular protrusion 11. The outer end of the rubber ring 12 is in contact with the inner wall of the seamless steel pipe body 1. Multiple drive rods 10 corresponding to the rubber rings 12 are fixedly provided on the outer end of the central cable 2. The top end of the drive rod 10 is fixedly connected to the end of the rubber ring 12 away from the annular protrusion 11.

[0026] In actual use, the seamless steel pipe body 1 needs to be cut. The central cable 2 located inside the seamless steel pipe body 1 is cut synchronously with the seamless steel pipe body 1. After cutting, the two ends of the central cable 2 are tied together to keep the length of the central cable 2 the same as the length of the seamless steel pipe body 1. The knot can fix the central cable 2 and prevent the central cable 2 from separating and falling off from the inside of the seamless steel pipe body 1.

[0027] When a blockage occurs at a certain location inside the seamless steel pipe body 1, and high pressure is generated due to the blockage, the pressure inside the seamless steel pipe body 1 will compress the rubber ring 12. The outer end of the rubber ring 12 is not fixedly connected to the inner wall of the seamless steel pipe body 1, and the rubber ring 12 has a certain degree of elasticity. Therefore, after being compressed, the thickness of the rubber ring 12 will decrease, while the length of the rubber ring 12 will increase. One end of the rubber ring 12 is fixed to the inner wall of the seamless steel pipe body 1 by an annular protrusion 11. Therefore, the rubber ring 12 is away from the annular protrusion 11. The end will move and drive the drive rod 10. At the same time, the drive rod 10 will drive the central cable 2 to move inside the seamless steel pipe body 1. The central cable 2 extends synchronously with the seamless steel pipe body 1. Therefore, the central cable 2 will pass through the blockage position. The movement of the central cable 2 will affect the blockage position, causing the blockage to loosen, thereby clearing the blockage. After the blockage is cleared, the pressure inside the seamless steel pipe body 1 will also decrease, which will reduce the pressure and fundamentally prevent the seamless steel pipe body 1 from bursting due to excessive pressure, thus improving the explosion-proof effect.

[0028] To maintain the position of the central cable 2 inside the seamless steel pipe body 1, such as Figure 2 , 3 As shown, multiple fixing plates 9 are fixed on the inner wall of the seamless steel pipe body 1. A collar 8 is fixed at the bottom of the fixing plate 9. The collar 8 is sleeved on the outer end of the central cable 2. The inner diameter of the collar 8 is larger than the outer diameter of the central cable 2. The collar 8 can fix and restrict the central cable 2.

[0029] The central cable 2 is installed inside the seamless steel pipe body 1 by means of a collar 8 fixed at the center position. No matter how the central cable 2 moves, it will not move away from the center position of the seamless steel pipe body 1 due to the presence of the collar 8. The inner diameter of the collar 8 is smaller than the size of the knot, which plays a role in fixing the central cable 2.

[0030] To improve the strength of the seamless steel pipe body 1, such as Figure 5 As shown, a protective layer is fixedly provided on the inner wall of the seamless steel pipe body 1. The protective layer includes a heat-insulating coating 4 sprayed on the inner wall of the seamless steel pipe body 1. The main component of the heat-insulating coating 4 is epoxy resin, which can reduce the efficiency of heat transfer. The inner side of the heat-insulating coating 4 is sprayed with an anti-corrosion coating 5. The main component of the anti-corrosion coating 5 is acrylic resin, which can reduce the corrosion of the inner wall of the seamless steel pipe body 1. The outer end of the anti-corrosion coating 5 is sprayed with a wear-resistant coating 6. The main component of the wear-resistant coating 6 is alumina, which has stable chemical properties and is not easily worn.

[0031] By setting up heat insulation coating 4, anti-corrosion coating 5, and wear-resistant coating 6, heat insulation coating 4 blocks the path of heat propagation from the inside to the seamless steel pipe body 1, thereby reducing the influence of the temperature of the fluid inside the seamless steel pipe body 1 on the seamless steel pipe body 1 and preventing the seamless steel pipe body 1 from expanding or contracting. Anti-corrosion coating 5 and wear-resistant coating 6 prevent the fluid from damaging the inner wall of the seamless steel pipe body 1 from both chemical and physical levels, respectively.

[0032] After a rupture occurs, it is also necessary to minimize the damage caused by the rupture, such as... Figure 1 , 4 As shown, a guide component 3 is sleeved on the outer end of the seamless steel pipe body 1. The guide component 3 includes an outer tube body 302 sleeved on the outer end of the seamless steel pipe body 1. The inner diameter of the outer tube body 302 is larger than the outer diameter of the seamless steel pipe body 1, and there is a certain gap between the two.

[0033] Multiple washers 304 are fixedly provided on the inner wall of the outer tube 302, which are in contact with the outer end of the seamless steel pipe body 1. The washers 304 have notches. Multiple fastening bolts 303 are provided at the bottom end of the outer tube 302 through threads. Tightening the fastening bolts 303 can fix the position of the outer tube 302 at the outer end of the seamless steel pipe body 1.

[0034] The outer tube 302 has multiple notches arranged in a straight line at its outer end, and a buffer net 301 is embedded in the notch. The buffer net 301 can buffer the fluid when it is ejected outward.

[0035] Before use, rotate the outer tube 302 at the outer end of the seamless steel pipe body 1 and rotate the buffer net 301 at its outer end. Adjust the direction of the buffer net 301 so that it faces the ground, wall, or other positions. In this way, even if the fluid inside the seamless steel pipe body 1 leaks outward, it will only affect the ground or wall or other less dangerous positions and will not spray towards people or other more important objects, thus improving the protection effect.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic pressure-reducing explosion-proof seamless steel pipe, comprising a seamless steel pipe body (1), characterized in that: The seamless steel pipe body (1) is provided with a central cable (2) inside. The central cable (2) is located at the center inside the seamless steel pipe body (1). The outer end of the central cable (2) is fixed with multiple protrusions (7). The protrusions (7) can increase the friction of the central cable (2). The two ends of the central cable (2) are tied with knots, and the length of the central cable (2) between the two knots is the same as the length of the seamless steel pipe body (1) used. Multiple annular protrusions (11) are fixedly provided on the inner wall of the seamless steel pipe body (1). A rubber ring (12) is fixedly provided on one side of the annular protrusion (11). The outer end of the rubber ring (12) is in contact with the inner wall of the seamless steel pipe body (1). Multiple drive rods (10) corresponding to the rubber rings (12) are fixedly provided on the outer end of the central cable (2). The top end of the drive rod (10) is fixedly connected to the end of the rubber ring (12) away from the annular protrusions (11).

2. The automatic pressure-reducing explosion-proof seamless steel pipe according to claim 1, characterized in that: Multiple fixing plates (9) are fixed on the inner wall of the seamless steel pipe body (1). A collar (8) is fixed at the bottom of the fixing plate (9). The collar (8) is sleeved on the outer end of the central cable (2). The inner diameter of the collar (8) is larger than the outer diameter of the central cable (2).

3. The automatic pressure-reducing explosion-proof seamless steel pipe according to claim 1, characterized in that: A protective layer is fixedly provided on the inner wall of the seamless steel pipe body (1). The protective layer includes a heat insulation coating (4) sprayed on the inner wall of the seamless steel pipe body (1), an anti-corrosion coating (5) sprayed on the inner side of the heat insulation coating (4), and a wear-resistant coating (6) sprayed on the outer end of the anti-corrosion coating (5).

4. The automatic pressure-reducing explosion-proof seamless steel pipe according to claim 1, characterized in that: The seamless steel pipe body (1) is fitted with a guide component (3) at its outer end. The guide component (3) includes an outer tube body (302) fitted at the outer end of the seamless steel pipe body (1). The inner diameter of the outer tube body (302) is larger than the outer diameter of the seamless steel pipe body (1).

5. The automatic pressure-reducing explosion-proof seamless steel pipe according to claim 4, characterized in that: Multiple washers (304) are fixedly provided on the inner wall of the outer tube (302) and contact the outer end of the seamless steel pipe body (1). The washers (304) have notches. Multiple fastening bolts (303) are provided at the bottom end of the outer tube (302) through threads.

6. The automatic pressure-reducing explosion-proof seamless steel pipe according to claim 4, characterized in that: The outer tube (302) has multiple notches arranged in a straight line at its outer end, and a buffer mesh (301) is embedded in the notches.

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