Oil pipe joint accessory special for gas pipeline

Abstract

The utility model relates to the technical field of pipeline joints, and discloses a special oil pipe joint fitting for a gas pipeline, which comprises an external connection cylinder, the external connection cylinder is arranged between two mutually connected oil pipes, a joint is arranged in the external connection cylinder, an extension pipe is fixedly mounted on the external connection cylinder, a detection assembly is arranged in the extension pipe, and the detection assembly is connected with the joint. Connecting sealing assemblies are arranged on the two sides of the outer connecting cylinder, and a positioning assembly is arranged between the outer connecting cylinder and the connector. By arranging the external cylinder and the detection assembly, when gas escapes, the necking pipe can increase the flow rate of the gas by reducing the pipe diameter of the gas pipeline, the gas overflows upwards and applies upward acting force to the moving ball, the moving ball moves upwards, and synchronously, the distance sensor can sense the distance between the distance sensor and the moving ball; and if the distance sensor senses the distance change, the gas leakage condition occurs at the joint, and then the maintenance personnel can maintain the joint so as to ensure the use safety of the pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline joints, in particular to a special oil pipe joint fitting for gas pipelines. Background Art

[0002] A gas pipe is a special pipeline for transporting combustible gas. It uses a metal gas pipe hose to replace the traditional buckle-type rubber hose, which can solve the defects of easy detachment, easy aging, easy insect bite, and short service life of the rubber hose. Usually, a joint is required to connect two gas pipes.

[0003] When using a gas pipe, there are particularly strict requirements. Because pipeline leakage may lead to accidents such as fires, explosions, and poisoning, when the internal pressure of the gas pipeline is too high or the gasket at the joint ages after long-term use, air leakage may occur at the joint. When there is a small amount of air leakage at the joint, it may be difficult to detect in time. If not repaired in time, it will affect the safety of subsequent use.

[0004] Therefore, we propose a special oil pipe joint fitting for gas pipelines. Content of the Utility Model

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides a special oil pipe joint fitting for gas pipelines.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme. A special oil pipe joint fitting for gas pipelines includes an external connection cylinder. The external connection cylinder is arranged between two connected oil pipes. A joint is arranged inside the external connection cylinder. An extension pipe is fixedly installed on the external connection cylinder. A detection component is arranged inside the extension pipe. Connection and sealing components are arranged on both sides of the external connection cylinder. A positioning component is arranged between the external connection cylinder and the joint.

[0007] The detection component includes a reduced-diameter pipe. The reduced-diameter pipe is fixedly installed inside the extension pipe. A moving ball is movably installed inside the extension pipe. A distance sensor is fixedly installed inside the extension pipe.

[0008] Preferably, the detection component further includes a positioning rope. Two positioning ropes are fixedly installed inside the extension pipe. The moving ball is movably connected to the positioning rope. A shielding cover is arranged on the upper side of the extension pipe.

[0009] Preferably, the reduced-diameter pipe is a frustum-shaped tubular. The internal diameter of the reduced-diameter pipe gradually decreases from bottom to top. One end of the positioning rope is fixedly connected to the reduced-diameter pipe.

[0010] Preferably, the detection component further includes a connecting shaft rod fixedly installed at the bottom of the shielding cover. The connecting shaft rod is fixedly connected to the extension pipe. The distance sensor is fixedly installed at the bottom of the connecting shaft rod. The other end of the positioning rope is fixedly connected to the connecting shaft rod. A retaining ring is fixedly installed between the shielding cover and the extension pipe.

[0011] Preferably, the connection and sealing component includes a first connecting sleeve disposed inside the external connecting cylinder. A sealing groove is formed on the first connecting sleeve. A sealing ring is fixedly installed on the external connecting cylinder. A first connecting sleeve is disposed on one side of the second connecting sleeve. Both the first connecting sleeve and the connecting flange are fixedly installed with a second connecting sleeve. Sealing rings are fixedly installed inside both the first connecting sleeve and the second connecting sleeve.

[0012] Preferably, the sealing groove is a groove with a V-shaped cross-section, and the cross-section of the sealing ring is V-shaped. The sealing ring is snap-fitted with the sealing groove.

[0013] Preferably, the positioning component includes a positioning sleeve. Two positioning sleeves are symmetrically and fixedly installed on the joint. A positioning strip is movably installed on the positioning sleeve, and the positioning strip is fixedly installed inside the external connecting cylinder.

[0014] The utility model provides a special oil pipe joint fitting for gas pipelines. Compared with the prior art, it has the following improvements and advantages: By providing an external connecting cylinder and a detection component, the external connecting cylinder can wrap the outside of the joint to extend the service life of the joint and the safety of pipeline use. When gas leaks occur at the joint, the gas overflows upward through the reduced-diameter pipe inside the extension pipe. When the gas escapes, the reduced-diameter pipe can increase the gas flow rate by reducing the gas pipeline diameter. The gas overflows upward and applies an upward force to the moving ball. The moving ball moves upward. Synchronously, the distance sensor can sense the distance from the moving ball. If the distance sensor senses a change in distance, it indicates that a gas leakage has occurred at the joint. Subsequently, the maintenance personnel can repair the joint to ensure the safety of pipeline use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extending based on the provided drawings without creative efforts.

[0016] Figure 1 FIG. is a schematic structural diagram of a special oil pipe joint fitting for gas pipelines proposed for the structure of the present utility model;

[0017] Figure 2Schematic diagram of the structure of the positioning component in a special oil pipe joint fitting for gas pipelines proposed for the structure of the present utility model;

[0018] Figure 3 Schematic diagram of the structure of the connection and sealing component in a special oil pipe joint fitting for gas pipelines proposed for the structure of the present utility model;

[0019] Figure 4 Installation diagram of the sealing ring and the sealing groove in a special oil pipe joint fitting for gas pipelines proposed for the structure of the present utility model;

[0020] Figure 5 Schematic diagram of the structure of the detection component in a special oil pipe joint fitting for gas pipelines proposed for the structure of the present utility model.

[0021] Legend:

[0022] 1. Outer connecting cylinder; 11. First connecting sleeve; 12. Connecting flange; 13. Second connecting sleeve; 14. Sealing ring; 15. Sealing groove; 16. Sealing ring; 2. Extension pipe; 21. Shielding cover; 22. Enclosing ring; 23. Connecting shaft rod; 24. Distance sensor; 25. Positioning rope; 26. Moving ball; 27. Reducing pipe; 3. Joint; 31. Positioning sleeve; 32. Positioning strip. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] A special oil pipe joint fitting for gas pipelines, as Figure 1 - Figure 5As shown in the figure, it includes an outer connecting cylinder 1. The outer connecting cylinder 1 is arranged between two interconnected oil pipes. Inside the outer connecting cylinder 1, there is a joint 3. The joint 3 is arranged between the two pipe bodies of the oil pipes. The two pipe bodies are fixedly connected to each other through the joint 3. An extension pipe 2 is fixedly installed on the outer connecting cylinder 1. Inside the extension pipe 2, there is a detection component. The detection component can detect whether there is air leakage at the joint 3. On both sides of the outer connecting cylinder 1, there are connecting and sealing components. The connecting and sealing components can achieve the connection and sealing between the outer connecting cylinder 1 and the pipe body. Between the outer connecting cylinder 1 and the joint 3, there is a positioning component. The positioning component can assist in the positioning and installation of the outer connecting cylinder 1 on the outside of the pipe body; by providing the outer connecting cylinder 1 and the detection component, the outer connecting cylinder 1 can wrap the outside of the joint 3 to extend the service life of the joint 3 and the safety of pipeline use. At the same time, there is a detection component. The detection component can detect whether there is air leakage at the joint 3 to ensure the safety of pipeline use and the timeliness of maintenance. At the same time, there is a connecting and sealing component. The connecting and sealing component can ensure the sealing effect of the extension pipe 2 installed on the outside of the pipe body to ensure the detection effect of the detection component.

[0025] Furthermore, the detection component includes a reduced-diameter pipe 27. The reduced-diameter pipe 27 is fixedly installed inside the extension pipe 2. The reduced-diameter pipe 27 is in the shape of a frustum of a cone. The internal diameter of the reduced-diameter pipe 27 gradually decreases from bottom to top. A moving ball 26 is movably installed inside the extension pipe 2. The moving ball 26 is a hollow spherical structure. The moving ball 26 is made of lightweight plastic. A distance sensor 24 is fixedly installed inside the extension pipe 2. The distance sensor 24 is electrically connected to an external controller. The distance sensor 24 can sense the distance from the moving ball 26. Two positioning ropes 25 are fixedly installed inside the extension pipe 2. One end of the positioning rope 25 is fixedly connected to the reduced-diameter pipe 27. The moving ball 26 is movably connected to the positioning rope 25. On the upper side of the extension pipe 2, there is a shielding cover 21. The cross-section of the shielding cover 21 is trapezoidal. The bottom of the shielding cover 21 is fixedly installed with a connecting shaft rod 23. The connecting shaft rod 23 is fixedly connected to the extension pipe 2. The distance sensor 24 is fixedly installed at the bottom of the connecting shaft rod 23. The other end of the positioning rope 25 is fixedly connected to the connecting shaft rod 23. A retaining ring 22 is fixedly installed between the shielding cover 21 and the extension pipe 2; by providing the detection component, when there is gas leakage at the joint 3, the gas overflows upward through the reduced-diameter pipe 27 inside the extension pipe 2. When the gas escapes, the reduced-diameter pipe 27 can increase the gas flow rate by reducing the gas pipeline diameter. The gas overflows upward and applies an upward force to the moving ball 26. The moving ball 26 moves upward. Synchronously, the distance sensor 24 can sense the distance from the moving ball 26. If the distance sensor 24 senses a change in distance, it indicates that there is gas leakage at the joint 3. Subsequently, the maintenance personnel can repair the joint 3 to ensure the safety of pipeline use.

[0026] Further, the connection and sealing assembly includes a first connection sleeve 11 disposed inside the external connection cylinder 1. A sealing groove 15 is formed in the first connection sleeve 11. The sealing groove 15 is a groove with a V-shaped cross-section. A sealing ring 16 is fixedly installed on the external connection cylinder 1. Rubber is lined on the sealing ring 16. The cross-section of the sealing ring 16 is V-shaped. The sealing ring 16 is snap-fitted with the sealing groove 15. A first connection sleeve 11 is disposed on one side of the second connection sleeve 13. The first connection sleeve 11 and the connection flange 12 are both fixedly installed with a second connection sleeve 13. The two second connection sleeves 13 are threadedly connected by a threaded shaft and a nut. Sealing rings 14 are fixedly installed inside the first connection sleeve 11 and the second connection sleeve 13. The sealing rings 14 are made of elastic rubber material. The sealing rings 14 are press-fitted with the outer wall of the pipe body; by providing the connection and sealing assembly, two pipe bodies are connected to each other through the joint 3. Before installing the joint 3, the second connection sleeve 13 is sleeved on one side of the pipe body, and the first connection sleeve 11 is installed on one side of the second connection sleeve 13 through the connection flange 12. The external connection cylinder 1 is installed and sleeved outside the pipe body through the cooperation of the sealing groove 15 and the sealing ring 16. Synchronously, another set of the second connection sleeve 13, the connection flange 12, the first connection sleeve 11, and the sealing ring 14 are installed on the other side of the pipe body. Subsequently, the two ends of the two pipe bodies are fixed to each other through the joint 3. Synchronously, the external connection cylinder 1 and the first connection sleeves 11 on the two pipe bodies are connected and sealed with each other through the cooperation of the sealing groove 15 and the sealing ring 16 to ensure the sealing performance of the external connection cylinder 1. The external connection cylinder 1 wraps the joint 3 inside to protect it and forms a sealed space at the same time.

[0027] Further, the positioning assembly includes a positioning sleeve 31. Two positioning sleeves 31 are symmetrically and fixedly installed on the joint 3. A positioning bar 32 is movably installed on the positioning sleeve 31. The positioning bar 32 is fixedly installed inside the external connection cylinder 1; by providing the positioning assembly, when the external connection cylinder 1 is installed and wrapped outside the pipe body and the joint 3, the external connection cylinder 1 can be assisted in positioning during installation by pushing the positioning bar 32 to be movably connected with the positioning sleeve 31.

[0028] Working principle of the utility model: The joint 3 is arranged between two pipe bodies, and the two pipe bodies are connected to each other through the joint 3. Before installing the joint 3, the second connecting sleeve 13 is sleeved on one side of the pipe body, and the first connecting sleeve 11 is installed on the upper side of the second connecting sleeve 13 through the connecting flange 12. The external connecting cylinder 1 is sleeved outside the pipe body through the cooperation of the sealing groove 15 and the sealing ring 16. Synchronously, another set of the second connecting sleeve 13, the connecting flange 12, the first connecting sleeve 11 and the sealing ring 14 are installed on the other side of the pipe body. Subsequently, the two ends of the two pipe bodies are fixed to each other through the joint 3. Synchronously, the external connecting cylinder 1 and the first connecting sleeves 11 on the two pipe bodies are connected and sealed with each other through the cooperation of the sealing groove 15 and the sealing ring 16 to ensure the sealing performance of the external connecting cylinder 1. The external connecting cylinder 1 wraps the joint 3 inside to protect it and forms a sealed space at the same time. When gas leakage occurs at the joint 3, the gas overflows upward through the reduced-diameter pipe 27 inside the extension pipe 2. When the gas escapes, the reduced-diameter pipe 27 can increase the gas flow rate by reducing the gas pipeline diameter. The gas overflows upward and exerts an upward force on the moving ball 26. The moving ball 26 moves upward. Synchronously, the distance sensor 24 can sense the distance from the moving ball 26. If the distance sensor 24 senses a change in the distance, it indicates that gas leakage has occurred at the joint 3. Subsequently, the maintenance personnel can repair the joint 3.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A special oil pipe joint fitting for a gas pipeline, comprising an external connection tube (1), the external connection tube (1) being arranged between two oil pipes connected to each other, a joint (3) being arranged inside the external connection tube (1), characterized in that: An extension tube (2) is fixedly mounted on the external tube (1), a detection component is arranged inside the extension tube (2), connection sealing components are arranged on both sides of the external tube (1), and a positioning component is arranged between the external tube (1) and the joint (3); The detection component comprises a shrinking tube (27), the shrinking tube (27) is fixedly installed inside the extension tube (2), a moving ball (26) is movably installed inside the extension tube (2), and a distance sensor (24) is fixedly installed inside the extension tube (2).

2. The special oil pipe joint fitting for gas pipeline according to claim 1, characterized in that: The detection assembly also includes positioning ropes (25). Two positioning ropes (25) are fixedly installed inside the extension tube (2). The moving ball (26) is movably connected to the positioning ropes (25). A shielding cover (21) is provided on the upper side of the extension tube (2).

3. The special oil pipe joint fitting for gas pipeline according to claim 2, characterized in that: The shrinking tube (27) is in the shape of a truncated cone, and the inner diameter of the shrinking tube (27) gradually decreases from bottom to top. One end of the positioning rope (25) is fixedly connected to the shrinking tube (27).

4. The special oil pipe joint fitting for gas pipeline according to claim 2, characterized in that: The detection assembly also includes a connecting shaft (23), the connecting shaft (23) is fixedly mounted on the bottom of the shielding cover (21), the connecting shaft (23) is fixedly connected to the extension tube (2), a distance sensor (24) is fixedly mounted on the bottom of the connecting shaft (23), the other end of the positioning rope (25) is fixedly connected to the connecting shaft (23), and a retaining ring (22) is fixedly mounted between the shielding cover (21) and the extension tube (2).

5. The special oil pipe joint fitting for gas pipeline according to claim 1, characterized in that: The connection and sealing assembly comprises a connection sleeve (11), the connection sleeve (11) being arranged inside the external connection tube (1), the connection sleeve (11) being provided with a sealing groove (15), the external connection tube (1) being fixedly provided with a sealing ring (16), the connection sleeve (11) being arranged on one side of the connection sleeve (13), the connection sleeve (11) and the connection flange (12) being fixedly provided with the connection sleeve (13), and the connection sleeve (11) and the connection sleeve (13) being fixedly provided with a sealing ring (14) inside.

6. The special oil pipe joint fitting for gas pipeline according to claim 5, characterized in that: The closed groove (15) is a groove with a V-shaped cross section, the closed ring (16) has a V-shaped cross section, and the closed ring (16) is clamped with the closed groove (15).

7. The special oil pipe joint fitting for gas pipeline according to claim 1, characterized in that: The positioning assembly comprises positioning sleeves (31), two positioning sleeves (31) are symmetrically fixedly mounted on the joint (3), a positioning strip (32) is movably mounted on the positioning sleeves (31), and the positioning strip (32) is fixedly mounted inside the external connection tube (1).

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