Leakage-proof double-seal joint for gas pipeline

Abstract

The utility model relates to the technical field of sealing connectors, and discloses a gas pipeline leakproof double-sealing connector which comprises an upper connecting cylinder, a plurality of clamping blocks are fixedly connected to the periphery of the bottom of the upper connecting cylinder, a first threaded hole is formed in the outer wall of each clamping block, and a second sealing ring is slidably connected to the outer wall of each clamping block. A plurality of second cylindrical holes are formed in the periphery of the top of the second sealing ring, the inner walls of the second cylindrical holes are slidably connected with the outer wall of the clamping block, a lower fixing cylinder is slidably connected to the bottom of the second sealing ring, and a plurality of second threaded holes are formed in the upper end of the outer wall of the lower fixing cylinder. According to the device, when the upper connecting cylinder and the lower connecting cylinder need to be replaced, the first nut is rotated out of the first bolt, at the moment, the upper connecting cylinder drives the clamping block to leave the second cylindrical hole, at the moment, the place needing to be replaced can be replaced, and the effect that different parts can be replaced when faults and damage occur is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealed interface technical field especially relates to gas pipeline anti -leakage double -sealed joint. BACKGROUND

[0002] Gas pipeline is the pipeline system for conveying gas, it mainly by pipeline itself, pipe fitting and valve multiple types, constitute, the material quality of pipeline commonly has steel pipe and polyethylene pipe, steel pipe high strength, generally used for long distance high pressure gas transmission and building's part of entering the house, polyethylene pipe corrosion resistance, good flexibility, many applications in low pressure buried gas transmission, gas pipeline anti -leakage double -sealed joint realizes double protection through the unique structure design, its inside usually contains two sealing structures, the first sealing adopts the sealing ring made of elastic material such as rubber, utilizes the elastic deformation of material itself, tightly fits the gap of pipeline connection, to preliminarily prevent gas leakage, the second sealing can be based on the close fit between metal and metal and special sealant filling, when gas pressure acts on the joint, the two sealing structures will be further compressed under pressure, form more closely sealed effect, effectively prevent gas overflow from the joint, ensure the safety and stability of gas transmission process, but in the use process, long -term wear and tear will lead to wear and tear at this time need to disassemble and replace.

[0003] The existing replacement gas pipeline anti -leakage double -sealed joint structure mainly relates to detachable connecting part, generally adopts the mode of threaded connection and flange connection, when threaded connection, through the use of special pipe wrench tool, the joint part with thread and pipeline are screwed and loosened operation, this mode is more flexible, is applicable to the pipeline part with smaller diameter and relatively lower pressure. UTILITY MODEL CONTENTS

[0004] In order to make up for the above insufficient, the utility model provides gas pipeline anti -leakage double -sealed joint, aims at improving the prior art in this kind of disassembly and replacement mode can only replace the whole joint, can not replace one section, leading to the problem of higher replacement cost.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a double-sealed gas pipeline leak-proof joint, comprising an upper connecting cylinder, with multiple locking blocks fixedly connected to the bottom circumference of the upper connecting cylinder, threaded holes I on the outer wall of each locking block, a sealing ring II slidably connected to the outer wall of each locking block, multiple cylindrical holes II on the top circumference of each sealing ring II, the inner wall of each cylindrical hole II slidably connected to the outer wall of the locking block, a lower fixing cylinder slidably connected to the bottom of each sealing ring II, multiple threaded holes II on the upper end of the outer wall of each lower fixing cylinder, a bolt I threadedly connected to the inner wall of each threaded hole II, a nut I threadedly connected to the rear end of the outer wall of each bolt I, a lower fixing cylinder slidably connected to the front side of the nut I, and a sealing mechanism provided at the top of the upper connecting cylinder for sealing.

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

[0007] The sealing mechanism includes a sealing ring, the outer wall of which is slidably connected to the inner wall of the upper connecting cylinder. The top of the inner wall of the upper connecting cylinder is provided with multiple cylindrical holes. The inner wall of each cylindrical hole is slidably connected to a lower connector. The upper end of the outer wall of the lower connector is provided with an annular groove. The upper end of the inner wall of each cylindrical hole is fixedly connected to an annular stop. The outer wall of the annular stop is slidably connected to the inner wall of the annular groove. The top of the sealing ring is fixedly connected with multiple upper connectors.

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

[0009] The upper connecting cylinder is slidably connected to an upper stop block, and the bottom of the upper stop block is provided with multiple circular holes.

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

[0011] The bottom of the lower fixed cylinder is fixedly connected to the lower connecting cylinder, and the top of the inner wall of the lower connecting cylinder is slidably connected to the bottom of the sealing ring two.

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

[0013] A lower stop block is fixedly connected to the upper end of the outer wall of the lower connecting cylinder, and multiple connecting blocks are fixedly connected to the bottom of the inner wall of the lower connecting cylinder.

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

[0015] The top of the lower stop block is fixedly connected to multiple support columns, and the top of the outer wall of the support columns is slidably connected to the inner wall of the circular hole.

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

[0017] The top of the upper connecting cylinder is fixedly connected to an upper connecting plate, and the bottom of the upper connecting cylinder is fixedly connected to a lower connecting plate.

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

[0019] The top of the upper connecting plate is threaded with multiple bolts 2 around its perimeter, and the top of each bolt 2 is threaded with a nut 2.

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

[0021] 1. In this utility model, when it is necessary to replace the upper connecting cylinder and the lower connecting cylinder, the nut is rotated off the bolt, and the bolt and nut can be removed. At the same time, the upper connecting cylinder is lifted upward, and the upper connecting cylinder will drive the locking block away from the cylindrical hole. The part that needs to be replaced can then be replaced. After placing the new upper connecting cylinder, the same process is repeated. The upper connecting cylinder and the locking block are inserted into the cylindrical hole of the sealing ring. Then, the bolt is rotated into the threaded hole and the threaded hole to be fixed, and the nut is rotated onto the bolt. The replacement is then complete, achieving the effect of replacing different parts when a fault or damage occurs.

[0022] 2. In this utility model, when a connection is required, a sealing ring 1 needs to be installed. First, the sealing ring 1 is taken out. At this time, the lower connector can be connected to the lower upper connector cylinder. The upper end of the sealing ring 1 has an upper connector that can be connected to the lower end of another upper connector cylinder. Then, the sealing ring 1 is placed into the upper connector cylinder. At this time, the lower connector at the bottom of the sealing ring 1 will be locked into the cylindrical hole 1. Then, the annular groove will be firmly locked by the annular stop block. This achieves the effect of improving the sealing performance of both when the sealing joint needs to be connected to the pipeline through the sealing ring 1. Attached Figure Description

[0023] Figure 1 This is a front perspective view of the gas pipeline anti-leakage double sealing joint proposed in this utility model;

[0024] Figure 2 This is a top view of the gas pipeline anti-leakage double sealing joint proposed in this utility model;

[0025] Figure 3 This is a partial structural exploded view of the sealing ring of the gas pipeline anti-leakage double sealing joint proposed in this utility model;

[0026] Figure 4 This is a partial structural breakdown diagram of the lower stop block of the gas pipeline anti-leakage double sealing joint proposed in this utility model;

[0027] Figure 5This is a partial structural breakdown diagram of the lower fixed cylinder of the gas pipeline anti-leakage double sealing joint proposed in this utility model.

[0028] Legend:

[0029] 1. Upper connecting cylinder; 2. Sealing mechanism; 201. Cylindrical hole one; 202. Sealing ring one; 203. Lower connecting head; 204. Annular groove; 205. Annular stop block; 206. Upper connecting head; 3. Clamping block; 4. Threaded hole one; 5. Cylindrical hole two; 6. Threaded hole two; 7. Sealing ring two; 8. Bolt one; 9. Nut one; 10. Lower fixing cylinder; 11. Upper stop block; 12. Lower stop block; 13. Circular hole; 14. Lower connecting cylinder; 15. Connecting block; 16. Upper connecting plate; 17. Nut two; 18. Lower connecting plate; 19. Bolt two; 20. Support column. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 5 This utility model provides an embodiment of a gas pipeline anti-leakage double sealing joint, including an upper connecting cylinder 1. Multiple locking blocks 3 are fixedly connected to the bottom of the upper connecting cylinder 1 around its perimeter, so that the whole can be locked. The outer wall of the locking block 3 has a threaded hole 4. A sealing ring 7 is slidably connected to the outer wall of the locking block 3. Multiple cylindrical holes 5 are opened around the top of the sealing ring 7 around its perimeter. The inner wall of the cylindrical hole 5 is slidably connected to the outer wall of the locking block 3, making the overall connection more stable. The bottom of the sealing ring 7 is slidably connected to a lower fixing cylinder 10. Multiple threaded holes 6 are opened at the upper end of the outer wall of the lower fixing cylinder 10. Bolts 8 are threadedly connected to the inner wall of the threaded hole 6, which plays a fixing role. Nuts 9 are threadedly connected to the rear end of the outer wall of the bolts 8. The lower fixing cylinder 10 is slidably connected to the front side of the nut 9. A sealing mechanism 2 is provided at the top of the upper connecting cylinder 1. The sealing mechanism 2 is used for sealing.

[0032] Specifically, the structure includes an upper connecting cylinder 1, with multiple locking blocks 3 fixedly connected to its bottom perimeter. These locking blocks 3 have threaded holes 4 on their outer walls for threaded connection with other components. Each locking block 3 also has a slidably connected sealing ring 7 on its outer wall to ensure sealing performance at the connection point. The top perimeter of the sealing ring 7 has multiple cylindrical holes 5, the inner walls of which are slidably connected to the outer walls of the locking blocks 3, allowing the sealing ring 7 to move appropriately on the locking blocks 3. A lower fixing cylinder 10 is slidably connected to the bottom of the sealing ring 7. The upper end of the outer wall of the lower fixing cylinder 10 has multiple threaded holes 6, the inner walls of which are threadedly connected to bolts 8. The rear end of the outer wall of the bolts 8 is threadedly connected to a nut 9. The front side of the nut 9 is slidably connected to the lower fixing cylinder 10. By adjusting the position of the nut 9, pressure can be applied to the lower fixing cylinder 10, thereby ensuring the stability and sealing of the entire connection device.

[0033] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The sealing mechanism 2 includes a sealing ring 202. The outer wall of the sealing ring 202 is slidably connected to the inner wall of the upper connecting cylinder 1. The top of the inner wall of the upper connecting cylinder 1 is provided with multiple cylindrical holes 201. The inner wall of the cylindrical holes 201 is slidably connected to a lower connector 203, which makes the overall solidification more stable. The upper end of the outer wall of the lower connector 203 is provided with an annular groove 204. The upper end of the inner wall of the cylindrical holes 201 is fixedly connected to an annular stop 205, which plays a role in blocking. The outer wall of the annular stop 205 is slidably connected to the inner wall of the annular groove 204. The top of the sealing ring 202 is fixedly connected with multiple upper connectors 206.

[0034] Specifically, the sealing mechanism 2 includes a sealing ring 202. The outer wall of the sealing ring 202 is slidably connected to the inner wall of the upper connecting cylinder 1. The top of the inner wall of the upper connecting cylinder 1 has multiple cylindrical holes 201. The inner walls of these cylindrical holes 201 also have the function of slidably connecting to the lower connecting head 203. The upper part of the outer wall of the lower connecting head 203 has an annular groove 204. The purpose of this groove is to cooperate with the annular stop 205. The outer wall of the annular stop 205 and the inner wall of the annular groove 204 can be slidably connected to ensure the flexibility and sealing effect of the sealing mechanism 2. In addition, multiple upper connecting heads 206 are fixedly connected to the top of the sealing ring 202. The function of these upper connecting heads 206 is to connect the sealing ring 202 and the upper connecting cylinder 1 more firmly, thereby ensuring the stability and sealing performance of the entire sealing mechanism 2.

[0035] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4The upper connecting cylinder 1 has an upper stop block 11 slidably connected to its outer wall. The bottom of the upper stop block 11 is provided with multiple circular holes 13. The bottom of the lower fixed cylinder 10 is fixedly connected to the lower connecting cylinder 14, which improves the overall stability. The top of the inner wall of the lower connecting cylinder 14 is slidably connected to the bottom of the sealing ring 7. The upper end of the outer wall of the lower connecting cylinder 14 is fixedly connected to the lower stop block 12. The bottom of the inner wall of the lower connecting cylinder 14 is fixedly connected to multiple connecting blocks 15, which makes the overall connection more stable.

[0036] Specifically, a sliding connection structure is provided on the outer wall of the upper connecting cylinder 1 to facilitate a smooth sliding connection with the upper stop block 11. Multiple circular holes 13 are evenly provided on the bottom of the upper stop block 11. The circular holes 13 not only help to reduce the weight of the upper stop block 11, but may also have other functions. At the bottom of the device, the bottom of the lower fixed cylinder 10 is fixedly connected to the lower connecting cylinder 14 to ensure the stability of the structure. The top of the inner wall of the lower connecting cylinder 14 is slidably connected to the bottom of the sealing ring 7 to prevent leakage of liquid and gas and ensure the sealing performance of the device. In addition, a lower stop block 12 is fixedly connected to the upper end of the outer wall of the lower connecting cylinder 14. The presence of the lower stop block 12 can prevent the lower connecting cylinder 14 from sliding and displacing accidentally during use. In order to further enhance the stability of the connection, multiple connecting blocks 15 are fixedly connected to the bottom of the inner wall of the lower connecting cylinder 14. These connecting blocks 15 not only provide additional support points, but may also be used to connect with other components to achieve more complex mechanical structures.

[0037] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The top of the lower stop block 12 is fixedly connected to multiple support columns 20. The top of the outer wall of the support column 20 is slidably connected to the inner wall of the circular hole 13, which plays a supporting and fixing role. The top of the upper connecting cylinder 1 is fixedly connected to the upper connecting plate 16, and the bottom of the upper connecting cylinder 1 is fixedly connected to the lower connecting plate 18. Multiple bolts 19 are threaded around the top of the upper connecting plate 16, which improves the overall stability. Nuts 17 are threaded on the top of the bolts 19.

[0038] Specifically, the upper end of the lower stop block 12 is fixedly connected to multiple support columns 20. The upper part of the outer side wall of these support columns 20 is slidably connected to the inner side wall of the circular hole 13, thereby ensuring the flexibility and stability of the structure. Furthermore, the upper end of the upper connecting cylinder 1 is fixedly connected to the upper connecting plate 16, while the lower end of the upper connecting cylinder 1 is fixedly connected to the lower connecting plate 18. In order to enhance the strength and reliability of the connection, multiple bolts 19 are evenly threaded around the upper end of the upper connecting plate 16. The upper ends of these bolts 19 are connected to nuts 17 by threads, thereby forming a stable connection structure and ensuring the stability and durability of the entire device.

[0039] Working principle: When it is necessary to replace the upper connecting cylinder 1 and the lower fixed cylinder 10, rotate the nut 9 off the bolt 8. At this time, the bolt 8 and the nut 9 can be removed. The bolt 8 will then leave the threaded hole 4 on the locking block 3 and the threaded hole 6 on the lower fixed cylinder 10. At the same time, lift the upper connecting cylinder 1 upward. The upper connecting cylinder 1 will then drive the locking block 3 away from the cylindrical hole 5. At this time, the part that needs to be replaced can be replaced. After placing the new upper connecting cylinder 1, the same process is repeated. Insert the upper connecting cylinder 1 and the locking block 3 into the cylindrical hole 5 of the sealing ring 7. Then, fix it by rotating the bolt 8 into the threaded hole 6 and the threaded hole 4. At the same time, rotate the nut 9 onto the bolt 8. At this time, the replacement is completed. This achieves the effect of replacing different parts when a fault or damage occurs.

[0040] When a connection is required, sealing ring 202 needs to be installed. First, remove sealing ring 202. The lower end of sealing ring 202 has a lower connector 203 that can connect to the lower upper connecting cylinder 1, while the upper end of sealing ring 202 has an upper connector 206 that can connect to the lower end of another upper connecting cylinder 1. Then, insert sealing ring 202 into the upper connecting cylinder 1. The lower connector 203 at the bottom of sealing ring 202 will then be locked into the cylindrical hole 201, and the annular groove 204 will be firmly locked by the annular stop 205. At this time, the seal is more stable, and the sealing effect of sealing ring 202 can be improved when the sealing joint needs to be connected to the pipeline.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-sealed gas pipeline leak-proof joint, comprising an upper connecting sleeve (1), characterized in that: Multiple locking blocks (3) are fixedly connected to the bottom of the upper connecting cylinder (1). The outer wall of the locking block (3) is provided with a threaded hole (4). A sealing ring (7) is slidably connected to the outer wall of the locking block (3). Multiple cylindrical holes (5) are provided around the top of the sealing ring (7). The inner wall of the cylindrical hole (5) is slidably connected to the outer wall of the locking block (3). The bottom of the sealing ring (7) is slidably connected to the lower fixing cylinder (10). Multiple threaded holes (6) are provided at the upper end of the outer wall of the lower fixing cylinder (10). A bolt (8) is threadedly connected to the inner wall of the threaded hole (6). A nut (9) is threadedly connected to the rear end of the outer wall of the bolt (8). The lower fixing cylinder (10) is slidably connected to the front side of the nut (9). A sealing mechanism (2) is provided at the top of the upper connecting cylinder (1). The sealing mechanism (2) is used for sealing.

2. The gas pipeline leak-proof double-sealing joint according to claim 1, characterized in that: The sealing mechanism (2) includes a sealing ring (202), the outer wall of the sealing ring (202) is slidably connected to the inner wall of the upper connecting cylinder (1), the top of the inner wall of the upper connecting cylinder (1) is provided with a plurality of cylindrical holes (201), the inner wall of the cylindrical holes (201) is slidably connected with a lower connector (203), the upper end of the outer wall of the lower connector (203) is provided with an annular groove (204), the upper end of the inner wall of the cylindrical holes (201) is fixedly connected with an annular stop (205), the outer wall of the annular stop (205) is slidably connected to the inner wall of the annular groove (204), and the top of the sealing ring (202) is fixedly connected with a plurality of upper connectors (206).

3. The gas pipeline leak-proof double-sealing joint according to claim 1, characterized in that: The upper connecting cylinder (1) is slidably connected to an upper stop block (11), and the bottom of the upper stop block (11) is provided with multiple circular holes (13).

4. The gas pipeline leak-proof double-sealing joint according to claim 1, characterized in that: The bottom of the lower fixed cylinder (10) is fixedly connected to the lower connecting cylinder (14), and the top of the inner wall of the lower connecting cylinder (14) is slidably connected to the bottom of the sealing ring (7).

5. The gas pipeline leak-proof double-sealing joint according to claim 4, characterized in that: The lower connecting cylinder (14) is fixedly connected to the upper end of the outer wall of the lower connecting cylinder (14), and multiple connecting blocks (15) are fixedly connected to the bottom of the inner wall of the lower connecting cylinder (14).

6. The gas pipeline leak-proof double-sealing joint according to claim 5, characterized in that: The top of the lower stop (12) is fixedly connected to a plurality of support columns (20), and the top of the outer wall of the support column (20) is slidably connected to the inner wall of the circular hole (13).

7. The gas pipeline leak-proof double-sealing joint according to claim 1, characterized in that: The top of the upper connecting cylinder (1) is fixedly connected to an upper connecting plate (16), and the bottom of the upper connecting cylinder (1) is fixedly connected to a lower connecting plate (18).

8. The gas pipeline leak-proof double-sealing joint according to claim 7, characterized in that: The top of the upper connecting plate (16) is threaded with multiple bolts (19) around its perimeter, and the top of each bolt (19) is threaded with a nut (17).

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