Natural gas pressure compensation type pipeline joint

Abstract

The utility model belongs to the technical field of pipeline connectors, and particularly relates to a natural gas pressure compensation type pipeline connector which comprises a hose connector body, extension pipes are connected to the surfaces of the two sides of the hose connector body, one end of each extension pipe extends into a connecting pipe, and a connecting flange is connected to the surface of the other side of the connecting pipe. Through mutual cooperation of the extension pipe, the connecting pipe, the positioning block, the connecting block, the movable inserting rod and the pull rod, when the hose connector body needs to be disassembled and maintained, only the pull rod needs to be pulled, the pull rod drives the movable inserting rod to move, one end of the movable inserting rod moves out of the inserting groove in the positioning block, and therefore the positioning block can be separated from the connecting block; the extension pipe can be separated out of the connecting pipe, at the moment, the hose connector body can be separated from the connecting pipe, an operator can detach the hose connector body without a tool, and therefore convenience is brought to maintenance of the pipeline connector.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline joint technical field, concretely relates to a natural gas pressure compensation type pipeline joint. BACKGROUND

[0002] Natural gas usually refers to natural gas body produced in oil field, coal field and marshy land, and the main component is methane (CH4), containing a small amount of ethane, propane, butane and other hydrocarbon gas.

[0003] When natural gas is mined, the natural gas is transported through a pipeline, and in order to alleviate the influence of pressure change in the natural gas pipeline on the system, an operator uses a metal hose compensator as a pipeline joint for natural gas pressure compensation. Because the metal hose compensator is internally provided with a bellows, the metal hose compensator can absorb displacement or stress caused by part of the pressure change through its telescopic deformation, thereby ensuring stable transportation of the natural gas pipeline. However, when the metal hose compensator is installed, it is generally connected to the pipeline by using a flange and bolts. Therefore, when the metal hose compensator needs to be disassembled and maintained, the operator needs to use a tool to disassemble a plurality of bolts, so as to separate the metal hose compensator for maintenance. This operation is relatively cumbersome and time-consuming, thereby causing inconvenience to the maintenance of the pipeline joint.

[0004] Therefore, the utility model provides a natural gas pressure compensation type pipeline joint to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a natural gas pressure compensation type pipeline joint, and aims at solving the problem that, in the prior art, when a metal hose compensator needs to be disassembled and maintained, an operator needs to use a tool to disassemble a plurality of bolts, so as to separate the metal hose compensator for maintenance. This operation is relatively cumbersome and time-consuming.

[0006] To achieve the above object, the utility model provides the following technical scheme: a natural gas pressure compensation type pipeline joint, comprising a hose joint body, both sides of the hose joint body are connected with extension pipes, one end of the extension pipe extends into the inside of a connecting pipe, the other side surface of the connecting pipe is connected with a connecting flange, both ends of the both side surfaces of the hose joint body are connected with positioning blocks, one end of the positioning block extends into a positioning groove, the positioning groove is arranged on one side surface of a connecting block, the connecting block is connected to both end surfaces at one end of the connecting pipe, a slot is arranged on the top surface of the positioning block, one end of a movable insertion rod is connected to the inside surface of the slot, the other end of the movable insertion rod penetrates through a protruding block, and a pull rod is connected to the top surface of the movable insertion rod.

[0007] In order to realize the improvement of the sealing between the extension pipe and the connecting pipe, as a natural gas pressure compensation type pipeline joint of the utility model, the outer surface of the extension pipe is connected with a sealing ring, one end of the sealing ring extends into the sealing groove on the inner surface of the connecting pipe, and the sealing ring and the connecting pipe form a clamping structure through the sealing groove.

[0008] In order to realize the fixing of the positioning block, as a natural gas pressure compensation type pipeline joint of the utility model, the position and size of the insertion slot are matched with the position and size of the movable insertion rod, and the movable insertion rod and the positioning block form a sliding connection through the insertion slot.

[0009] In order to realize the elastic expansion and contraction of the movable insertion rod, as a natural gas pressure compensation type pipeline joint of the utility model, the bottom surface of the protruding block is provided with a movable slot, a spring is arranged in the movable slot and penetrated by the movable insertion rod, and the movable insertion rod, the movable slot and the spring and the protruding block form an elastic structure.

[0010] In order to realize the disassembly of the protruding block, as a natural gas pressure compensation type pipeline joint of the utility model, the outer surface of the bottom end of the protruding block is provided with surface threads, the top surface of the connecting block is provided with a threaded groove, and the protruding block and the connecting block form a threaded connection through the surface threads and the threaded groove.

[0011] In order to realize the disassembly of the pull rod, as a natural gas pressure compensation type pipeline joint of the utility model, the top surface of the two ends of the pull rod is penetrated and connected with a bolt, the other end of the bolt is threadedly connected with a fixing hole, and the fixing hole is arranged on the top surface of the movable insertion rod.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model discloses a natural gas pressure compensation type pipeline joint, which comprises an extension pipe, a connecting pipe, a positioning block, a connecting block, a movable insertion rod and a pull rod.

[0014] The utility model discloses a natural gas pressure compensation type pipeline joint, which comprises an extension pipe, a connecting pipe, a positioning block, a connecting block, a movable insertion rod and a pull rod. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present application and form a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0016] Figure 1 It is a three-dimensional structural schematic view of the present application;

[0017] Figure 2 It is a local explosion structural schematic view of the present application at the connecting pipe;

[0018] Figure 3 It is a local section structural schematic view of the present application at the connecting block;

[0019] Figure 4 It is a local explosion structural schematic view of the present application at the protruding block.

[0020] In the drawings: 1, hose joint body; 2, extension pipe; 3, connecting pipe; 4, connecting flange; 5, sealing ring; 6, sealing groove; 7, positioning block; 8, positioning groove; 9, connecting block; 10, insertion slot; 11, movable insertion rod; 12, protruding block; 13, movable slot; 14, spring; 15, pull rod; 16, surface screw thread; 17, threaded groove; 18, bolt; 19, fixing hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-4 The present application provides the following technical scheme: a natural gas pressure compensation type pipe joint, comprising a hose joint body 1, the hose joint body 1 is a JR-16 metal hose compensator, the both sides of the hose joint body 1 are connected with extension pipes 2, one end of the extension pipe 2 extends into the inside of a connecting pipe 3, the other side surface of the connecting pipe 3 is connected with a connecting flange 4, the both ends of the both sides of the hose joint body 1 are connected with positioning blocks 7, one end of the positioning block 7 extends into a positioning groove 8, the positioning groove 8 is arranged on the one side surface of a connecting block 9, the connecting block 9 is connected to the both end surfaces at one end of the connecting pipe 3, the top surface of the positioning block 7 is provided with an insertion slot 10, one end of a movable insertion rod 11 is connected to the inside surface of the insertion slot 10, the other end of the movable insertion rod 11 penetrates through a protruding block 12, and a pull rod 15 is connected to the top surface of the movable insertion rod 11.

[0023] Preferably, a sealing ring 5 is connected to the outer surface of one end of the extension pipe 2, one end of the sealing ring 5 extends into a sealing groove 6 formed on the inner surface of the connecting pipe 3, and the sealing ring 5 is clamped between the sealing groove 6 and the connecting pipe 3.

[0024] In use, one end of the extension pipe 2 can be slid into the connecting pipe 3, so that the extension pipe 2 moves with the sealing ring 5 to the sealing groove 6 on the inner side of the connecting pipe 3, and the sealing ring 5 is clamped in the sealing groove 6 by elasticity, thereby ensuring the sealing between the extension pipe 2 and the connecting pipe 3. The sealing ring 5 is made of rubber.

[0025] Preferably, the position and size of the insertion slot 10 match those of the movable insertion rod 11, and the movable insertion rod 11 is slidably connected between the insertion slot 10 and the positioning block 7.

[0026] In use, when the positioning block 7 is slid into the positioning slot 8, the position of the insertion slot 10 moves to the position of the movable insertion rod 11, and one end of the movable insertion rod 11 can be slid into the insertion slot 10 on the positioning block 7, so that the position of the positioning block 7 is fixed in the positioning slot 8.

[0027] Preferably, the bottom surface of the protrusion 12 is provided with a movable slot 13, a spring 14 is arranged in the movable slot 13 and penetrated by the movable insertion rod 11, and the movable insertion rod 11 is elastically connected between the movable slot 13 and the spring 14.

[0028] In use, the movable insertion rod 11 is irregularly shaped, so that the movable insertion rod 11 can only move vertically on the protrusion 12. When the movable insertion rod 11 slides on the protrusion 12, the movable insertion rod 11 can elastically stretch and contract on the protrusion 12 through the movable slot 13 and the spring 14.

[0029] Preferably, a surface screw thread 16 is formed on the outer surface of the bottom end of the protrusion 12, a threaded slot 17 is formed on the top surface of the connecting block 9, and the protrusion 12 is threadedly connected between the surface screw thread 16 and the threaded slot 17.

[0030] In use, the protrusion 12 is screwed into the threaded slot 17 on the connecting block 9 through the surface screw thread 16, so that the position of the protrusion 12 is fixed on the connecting block 9.

[0031] Preferably, a bolt 18 is connected to the top surface of both ends of the pull rod 15, a fixed hole 19 is threadedly connected to the other end of the bolt 18, and the fixed hole 19 is formed on the top surface of the movable insertion rod 11.

[0032] In use, the pull rod 15 is screwed into the fixed hole 19 through the bolt 18, so that the pull rod 15 and the movable insertion rod 11 are connected together.

[0033] Working principle: when using the natural gas pressure compensation type pipeline joint, the connecting flange 4 on the connecting pipe 3 is connected with the flange on the natural gas pipeline by screws, so that the connecting pipe 3 and the natural gas pipeline are connected together, so that the natural gas conveyed in the natural gas pipeline passes through the hose joint body 1 connected at one end of the connecting pipe 3, so that when the pressure in the natural gas pipeline changes, the bellows in the hose joint body 1 can absorb part of the displacement or stress caused by the pressure change through its expansion and contraction deformation, thereby ensuring the stability of the natural gas pipeline during conveying. By installing the hose joint body 1, the displacement caused by thermal expansion and mechanical vibration in the natural gas pipeline system can be compensated. When the hose joint body 1 needs to be disassembled and maintained, only pull the pull rod 15, and the pull rod 15 drives the movable plug rod 11 to slide on the protrusion 12. At this time, the movable plug rod 11 will extrude the spring 14 in the movable slot 13, so that one end of the movable plug rod 11 can be separated from the insertion slot 10 on the positioning block 7. At this time, the positioning block 7 can slide out of the positioning slot 8 on the connecting block 9, so that the extension pipe 2 at one end of the hose joint body 1 can also be separated from the connecting pipe 3, so that the hose joint body 1 and the connecting pipe 3 can be separated. The operator can disassemble the hose joint body 1 without tools for maintenance, thereby bringing convenience to the maintenance of the natural gas pressure compensation type pipeline joint. Secondly, when the spring 14 in the protrusion 12 is aged and the effect is not good, the bolt 18 can be twisted, so that one end of the bolt 18 is separated from the fixed hole 19, so that the pull rod 15 and the movable plug rod 11 are separated. Then rotate the protrusion 12, so that the protrusion 12 is separated from the threaded groove 17 through the surface thread 16. In this way, the protrusion 12 can be disassembled from the connecting block 9. At this time, the spring 14 on the movable plug rod 11 is exposed, so that the operator can maintain and replace the spring 14, thereby ensuring the use effect of the spring 14.

[0034] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A natural gas pressure compensating pipe joint comprising a hose joint body (1), characterized in that: The both sides surface of the hose joint body (1) is connected with the extension pipe (2), one end of the extension pipe (2) extends into the inside of the connecting pipe (3), the other side surface of the connecting pipe (3) is connected with the connecting flange (4), the both ends of the both sides surface of the hose joint body (1) is connected with the positioning block (7), one end of the positioning block (7) extends into the positioning groove (8), the positioning groove (8) is opened in the one side surface of the connecting block (9), the connecting block (9) is connected in the both ends surface of one end of the connecting pipe (3), the top surface of the positioning block (7) is opened with the insertion slot (10), one end of the movable insertion rod (11) is connected with the inside surface of the insertion slot (10), the other end of the movable insertion rod (11) penetrates through the convex block (12), and the top surface of the movable insertion rod (11) is connected with the pull rod (15).

2. A pressure-compensating natural gas pipe coupling according to claim 1, characterized in that: The outside surface of one end of the extension pipe (2) is connected with the sealing ring (5), one end of the sealing ring (5) extends into the sealing groove (6) opened in the inside surface of the connecting pipe (3), and the sealing ring (5) and the connecting pipe (3) constitute a clamping structure through the sealing groove (6).

3. A pressure-compensating natural gas pipe coupling according to claim 1, characterized in that: The position and size of the insertion slot (10) are matched with the position and size of the movable insertion rod (11), and the movable insertion rod (11) and the positioning block (7) constitute a sliding connection through the insertion slot (10).

4. A pressure-compensating natural gas coupling according to claim 1, characterized in that: The bottom surface of the convex block (12) is opened with the movable slot (13), the movable slot (13) is provided with the spring (14) penetrated by the movable insertion rod (11), and the movable insertion rod (11), the movable slot (13) and the spring (14) and the convex block (12) constitute an elastic structure.

5. A pressure-compensating natural gas coupling according to claim 1, characterized in that: The outside surface of the bottom end of the convex block (12) is opened with the surface screw (16), the top surface of the connecting block (9) is opened with the threaded groove (17), and the convex block (12) is connected through the surface screw (16) and the threaded groove (17).

6. A pressure-compensating natural gas coupling according to claim 1, characterized in that: The top surface of the both ends of the pull rod (15) is penetrated with the bolt (18), the other end of the bolt (18) is screwed with the fixed hole (19), and the fixed hole (19) is opened in the top surface of the movable insertion rod (11).

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