Leak-proof sealing element for oil refining and chemical engineering metal pipeline connection

Abstract

The utility model relates to the technical field of sealing elements, and discloses a leakproof sealing element for oil refining and chemical engineering metal pipeline connection, which comprises a hexagonal circular ring and a hexagonal nut, an outer ring is fixedly connected in the hexagonal circular ring, an inner ring is fixedly connected in the outer ring, a circular sheet is arranged in the inner ring, and a sealing ring is arranged in the hexagonal nut. The outer wall of the round piece is fixedly connected with a connecting rod, the top end of the connecting rod is fixedly connected with a rotating block, the inner portion of the hexagon nut is in threaded connection with a double-face threaded ring, the outer wall of the double-face threaded ring is provided with a plurality of grooves, and the interiors of the grooves are fixedly connected with graphite. The round piece is driven by the rotating block to rotate, the opening and closing effect is achieved, the sealing performance of the whole structure is enhanced through the first gasket and the second gasket, graphite can be self-lubricated, and through mutual cooperation of the first U-shaped ring, the rotating rod, the long block and the rotating shaft, if leakage happens to the pipe, the leakage position can be blocked in time.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing elements, in particular to a leakage-proof sealing element for connecting metal pipelines in oil refining and chemical industries. Background Art

[0002] Seals, a seemingly insignificant component, actually play a vital role in our lives and work. Its main function is to prevent fluids or solid particles from leaking from adjacent mating surfaces, and to prevent external impurities such as dust and moisture from invading the interior of machinery and equipment. It is precisely because of this seemingly small component that seals play a vital role in the major industries of the national economy such as defense, chemical industry, petroleum, coal, transportation and machinery manufacturing, and are hailed as basic components and essential accessories in these industries.

[0003] After searching, the Chinese patent announcement number is: CN219413866U, which discloses a leak-proof sealing structure, including: a pipeline and a sealing structure, a connection seat is fixedly welded on the pipeline, the sealing structure includes a mounting seat, the mounting seat is arranged on the bottom side of the connection seat, an annular groove is opened on the top side wall of the mounting seat, a rubber ring is arranged in the annular groove, and an extrusion mechanism is arranged on the mounting seat. The utility model drives the conical extrusion block to move the extrusion slide rod downward through the screw provided, pushes the slide rod to slide, drives the push plate to move, and when the push plate moves, it can drive the first push-pull rod and the second push-pull rod at the corresponding position to flip, thereby pushing the upper annular extrusion plate and the lower annular extrusion plate to move back to back, and extruding the rubber ring, so that the top side and the bottom side of the rubber ring are respectively extruded and fitted on the connection seat and the bottom wall of the annular groove, ensuring the extrusion force of the contact surface of the rubber ring. However, in actual use, the above device has the problem that the rubber ring is easily deformed when it is extruded by the push plate for a period of time, which may cause liquid or gas leakage. For this reason, a leak-proof seal for metal pipeline connection of oil refining and chemical industry is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a leak-proof seal for connecting metal pipelines in oil refining and chemical industry, aiming to improve the problem that the sealing device in the prior art is too simple and cannot be quickly blocked when leakage occurs.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a leakage-proof seal for connecting metal pipelines in oil refining and chemical industry, comprising a hexagonal ring and a hexagonal nut, the interior of the hexagonal ring is fixedly connected with an outer ring, the interior of the outer ring is fixedly connected with an inner ring, a gasket 1 is fixedly connected between the adjacent inner ring and the outer ring, a circular sheet is arranged inside the inner ring, a connecting rod is fixedly connected to the outer wall of the circular sheet, a rotating block is fixedly connected to the top of the connecting rod, a double-sided threaded ring is threadedly connected to the inner wall of the double-sided threaded ring, a gasket 2 is fixedly connected to the outer wall of the double-sided threaded ring, a plurality of grooves are opened on the outer wall of the double-sided threaded ring, graphite is fixedly connected to the interior of the plurality of grooves, a round tube is arranged inside the double-sided threaded ring, and a protective mechanism is arranged on the outer wall of the round tube.

[0006] As a further description of the above technical solution:

[0007] The protective mechanism includes a U-shaped ring 2, the inner walls of the two U-shaped rings 2 are arranged on the outer wall of the circular tube, the front top end of the U-shaped ring 2 is rotatably connected with a connecting plate, the front side of the connecting plate is rotatably connected with a U-shaped ring 1, the outer walls of the two U-shaped rings 1 and U-shaped ring 2 are both fixedly connected with a fixing block, the bottom of the front fixed block is rotatably connected with a rotating rod, the outer wall of the rotating rod is fixedly connected with a rotating shaft, and the outer wall of the rotating shaft is rotatably connected with a long block.

[0008] As a further description of the above technical solution:

[0009] The internal thread size of the hexagonal ring is 59 mm, and the external thread size of the double-sided threaded ring is 56 mm.

[0010] As a further description of the above technical solution:

[0011] The material of the hexagonal ring is stainless steel.

[0012] As a further description of the above technical solution:

[0013] The material of the gasket 1 is rubber, and the material of the gasket 2 is brass.

[0014] As a further description of the above technical solution:

[0015] The double-sided threaded ring is made of pure iron.

[0016] As a further description of the above technical solution:

[0017] The outer ring is fixedly connected to the middle part of the hexagonal ring.

[0018] As a further description of the above technical solution:

[0019] The interior of the hexagonal ring is a threaded structure.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, a connecting rod and a circular piece are connected to the top of the hexagonal ring, and the circular piece is driven to rotate by a rotating block to achieve an opening and closing effect. Gasket 1 and gasket 2 both enhance the sealing of the overall structure, and graphite can self-lubricate, thereby extending the service life of the overall equipment.

[0022] 2. In the utility model, through the mutual cooperation between the U-shaped ring 1, the U-shaped ring 2, the connecting piece, the fixing block, the rotating rod, the elongated block and the rotating shaft, it is possible to seal the leaking place in time if the pipe leaks, thus providing guarantee for the next maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of a leak-proof seal for connecting metal pipelines in a petroleum refining and chemical industry proposed by the utility model;

[0024] Figure 2 This is a schematic structural diagram of a sealing device for a leak-proof seal for connecting metal pipelines in a petroleum refining and chemical industry proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the protective device for the leak-proof seal for connecting metal pipelines in the oil refining and chemical industry proposed by the utility model;

[0026] Legend:

[0027] 1. Hexagonal ring; 2. Protection mechanism; 201. U-shaped ring 1; 202. U-shaped ring 2; 203. Connecting plate; 204. Fixed block; 205. Rotating rod; 206. Long block; 207. Rotating shaft; 3. Outer ring; 4. Gasket 1; 5. Inner ring; 6. Rotating block; 7. Connecting rod; 8. Round plate; 9. Gasket 2; 10. Groove; 11. Graphite; 12. Double-sided threaded ring; 13. Round tube. DETAILED DESCRIPTION

[0028] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0029] Reference Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a leak-proof seal for connecting metal pipelines in a petroleum refining and chemical industry, comprising a hexagonal ring 1 and a hexagonal nut, wherein an outer ring 3 is fixedly connected inside the hexagonal ring 1, an inner ring 5 is fixedly connected inside the outer ring 3, a gasket 4 is fixedly connected between the adjacent inner ring 5 and the outer ring 3, a circular sheet 8 is arranged inside the inner ring 5, a connecting rod 7 is fixedly connected to the outer wall of the circular sheet 8, a rotating block 6 is fixedly connected to the top of the connecting rod 7, a double-sided threaded ring 12 is connected to the inner thread of the hexagonal nut, a gasket 2 is fixedly connected to the outer wall of the double-sided threaded ring 12, a plurality of grooves 10 are provided on the outer wall of the plurality of grooves 10, graphite 11 is fixedly connected inside the double-sided threaded ring 12, a round tube 13 is arranged inside the double-sided threaded ring 12, the inner thread size of the hexagonal ring 1 is 59 mm, the outer thread size of the double-sided threaded ring 12 is 56 mm, and a protective mechanism 2 is arranged on the outer wall of the round tube 13.

[0030] Specifically, the inner part of the hexagonal ring 1 is connected with the outer ring 3, and the outer ring 3 and the inner ring 5 mainly play the role of fixing the gasket 4. The inner ring 5 is provided with a circular sheet 8, and the circular sheet 8 plays the role of blocking the liquid. The circular sheet 8 is matched with the rotating block 6 by the connecting rod 7. The circular sheet 8 can be opened by rotating the rotating block 6, and the sealing performance is further improved. The double-sided threaded ring 12 is threadedly connected to the hexagonal ring 1. Considering the sealing performance during the connection, the outer wall of the double-sided ring 12 is fixedly connected with the gasket 2 9, which can greatly improve the sealing performance during the connection. Sealing, considering that the design of the thread will wear out over time, a plurality of grooves 10 are opened on the thread of the double-sided threaded ring, and graphite 11 is connected to the inside of the groove 10, so that when the thread contacts the graphite 11, the graphite 11 will produce oil, and when left still, the graphite 11 will become solid again, so it can lubricate itself, greatly extending the stability and service life of the equipment, and the internal thread size of the hexagonal ring 1 is 59mm, the external thread size of the double-sided threaded ring 12 is 56mm, and the round tube 13 is mainly connected to the protective mechanism 2.

[0031] Reference Figure 3 The protection mechanism 2 includes a U-shaped ring 202, the inner walls of the two U-shaped rings 202 are arranged on the outer wall of the circular tube 13, the front top of the U-shaped ring 202 is rotatably connected with a connecting piece 203, the front side of the connecting piece 203 is rotatably connected with a U-shaped ring 1 201, the outer walls of the two U-shaped rings 1 201 and the U-shaped ring 202 are fixedly connected with a fixed block 204, the bottom of the front fixed block 204 is rotatably connected with a rotating rod 205, the outer wall of the rotating rod 205 is fixedly connected with a rotating shaft 207, and the outer wall of the rotating shaft 207 is rotatably connected with a long block 206.

[0032] Specifically, the function of the circular tube 13 is to support and fix the U-shaped ring 202. Considering that if liquid leaks, the consequences will be serious if it is not dealt with in time, the protective device consists of a U-shaped ring 201 and a U-shaped ring 202. The U-shaped ring 201 and the U-shaped ring 202 are rotatably connected through a connecting piece 203. Two elongated blocks 206 are fixed on the outer walls of the U-shaped ring 1 201 and the U-shaped ring 202. One of the elongated blocks 206 is rotatably connected to a rotating rod 205, and the outer wall of the rotating rod 205 is connected to a rotating shaft 207. The outer wall of the rotating shaft 207 is connected to the elongated block 206. The rotating rod 205 is rotated to drive the rotating shaft 207 to rotate together. When it is rotated to a suitable position, the elongated block 206 is rotated to lock the U-shaped ring 1 201 and the U-shaped ring 202 to seal the leaked liquid, providing valuable time and convenience for subsequent repairs.

[0033] Reference Figure 1 and Figure 2 The material of the hexagonal ring 1 is stainless steel, the material of the gasket 1 4 is rubber, the material of the gasket 2 9 is brass, the material of the double-sided threaded ring 12 is pure iron, the outer ring 3 is fixedly connected to the middle of the hexagonal ring 1, and the interior of the hexagonal ring 1 is a threaded structure.

[0034] Specifically, the material of the hexagonal ring 1 is stainless steel, which has the characteristics of anti-corrosion, anti-magnetic and high temperature resistance, high stability, and can extend the service life of the equipment. The material of gasket 1 4 is rubber, which has good ductility and sealing. The material of gasket 2 9 is brass, which has good flexibility and is a metal, so it is fixed on the outside of the double-sided threaded ring 12, so as to further improve the overall sealing and safety of the equipment and prevent liquid leakage. The material of the double-sided threaded ring 12 is pure iron, which has better high temperature resistance, so it is chosen as the material of the double-sided threaded ring 12. The outer ring 3 is fixedly connected to the middle position of the inner side of the hexagonal ring 1, so that the circular piece 8 can be opened and closed conveniently. The interior of the hexagonal ring 1 is a threaded structure, which has the advantage of facilitating disassembly and installation and improving the overall convenience of the equipment.

[0035] Working principle: the interior of the hexagonal ring 1 is connected with the outer ring 3, and the outer ring 3 and the inner ring 5 mainly play the role of fixing a gasket 4. A circular sheet 8 is arranged inside the inner ring 5, and the circular sheet 8 plays the role of blocking liquid. The circular sheet 8 is matched with the rotating block 6 through the connecting rod 7. The circular sheet 8 can be opened by rotating the rotating block 6, and the sealing performance is further improved. The double-sided threaded ring 12 is threadedly connected to the hexagonal ring 1. Considering the sealing performance during the connection, a gasket 2 9 is fixedly connected to the outer wall of the double-sided ring 12, which can greatly improve the sealing performance during the connection. Considering that the design of the thread will cause wear over time, a plurality of grooves 10 are opened on the threads of the double-sided threaded ring, and graphite 11 is connected to the inside of the groove 10, so that when the thread contacts the graphite 11, the graphite 11 will produce oil, and when it is left still, the graphite 11 will become solid again, so it can lubricate itself, which greatly extends the equipment. Stability and service life, and the internal thread size of the hexagonal ring 1 is 59mm, the external thread size of the double-sided threaded ring 12 is 56mm, and the round tube 13 is mainly connected to the protective mechanism 2. The protective device is composed of a U-shaped ring 1 201 and a U-shaped ring 202. The U-shaped ring 1 201 and the U-shaped ring 202 are rotatably connected through a connecting piece 203. Two elongated blocks 206 are fixed on the outer walls of the U-shaped ring 1 201 and the U-shaped ring 202, one of the elongated blocks 206 is rotatably connected to a rotating rod 205, and the outer wall of the rotating rod 205 is connected to a rotating shaft 207, and the outer wall of the rotating shaft 207 is connected to the elongated block 206. The rotating rod 205 is rotated to drive the rotating shaft 207 to rotate together. When it is rotated to a suitable position, the elongated block 206 is rotated to lock the U-shaped ring 1 201 and the U-shaped ring 202 to achieve blocking of the leaked liquid, providing valuable time and convenience for subsequent repairs.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leak-proof seal for connecting metal pipelines in oil refining and chemical industry, comprising a hexagonal ring (1) and a hexagonal nut, characterized in that: The inner part of the hexagonal circular ring (1) is fixedly connected to the outer ring (3), the inner part of the outer ring (3) is fixedly connected to the inner ring (5), the inner ring (5) and the outer ring (3) are fixedly connected with a gasket (4) between the adjacent parts, the inner ring (5) is provided with a circular sheet (8), the outer wall of the circular sheet (8) is fixedly connected to a connecting rod (7), the top of the connecting rod (7) is fixedly connected to a rotating block (6), the inner thread of the hexagonal nut is connected to a double-sided threaded ring (12), the outer wall of the double-sided threaded ring (12) is fixedly connected to a gasket (9), the outer wall of the double-sided threaded ring (12) is provided with a plurality of grooves (10), the inner parts of the plurality of grooves (10) are fixedly connected with graphite (11), the inner part of the double-sided threaded ring (12) is provided with a circular tube (13), and the outer wall of the circular tube (13) is provided with a protective mechanism (2).

2. The anti-leakage seal for connecting metal pipelines in oil refining and chemical industry according to claim 1, characterized in that: The protection mechanism (2) comprises a U-shaped ring (202), the inner walls of the two U-shaped rings (202) are arranged on the outer wall of the circular tube (13), the front top of the U-shaped ring (202) is rotatably connected to a connecting piece (203), the front side of the connecting piece (203) is rotatably connected to a U-shaped ring (201), the outer walls of the two U-shaped rings (201) and the U-shaped ring (202) are both fixedly connected to a fixing block (204), the bottom of the front fixing block (204) is rotatably connected to a rotating rod (205), the outer wall of the rotating rod (205) is fixedly connected to a rotating shaft (207), and the outer wall of the rotating shaft (207) is rotatably connected to a long block (206).

3. The anti-leakage seal for connecting metal pipelines in oil refining and chemical industry according to claim 1, characterized in that: The size of the internal thread of the hexagonal circular ring (1) is 59 mm, and the size of the external thread of the double-sided threaded ring (12) is 56 mm.

4. The anti-leakage seal for connecting metal pipelines in oil refining and chemical industry according to claim 1, characterized in that: The material of the hexagonal ring (1) is stainless steel.

5. The anti-leakage seal for connecting metal pipelines in oil refining and chemical industry according to claim 1, characterized in that: The material of the gasket 1 (4) is rubber, and the material of the gasket 2 (9) is brass.

6. The anti-leakage seal for connecting metal pipelines in oil refining and chemical industry according to claim 1, characterized in that: The double-sided threaded ring (12) is made of pure iron.

7. The anti-leakage seal for connecting metal pipelines in oil refining and chemical industry according to claim 1, characterized in that: The outer ring (3) is fixedly connected to the middle part of the hexagonal ring (1).

8. The anti-leakage seal for connecting metal pipelines in oil refining and chemical industry according to claim 1, characterized in that: The interior of the hexagonal ring (1) is a threaded structure.

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