Explosion-proof protection device for natural gas pipeline

Abstract

The utility model discloses a natural gas pipeline anti-explosion protection device which comprises an outer fixing ring, the outer fixing ring is fixed outside a pipeline joint through four sets of positioning screw blocks in a threaded mode, one side of the outer fixing ring is provided with an adjustable pressing protection assembly through a fixing block, and one end of the pressing protection assembly is fixed in a sleeved mode through a lantern ring thread. The handle is rotated to drive the stud to rotate, the stud can drive the movable pressing plate to move, the movable pressing plate drives the pressing block and the fixed abutting block to abut against and fix the pipeline joint, and at the pipeline joint, the pressing block is connected with the movable pressing plate through the connecting pressure spring, so that the buffering effect is achieved, and rigid abutting between the pressing block and the pipeline joint can be avoided; and the lantern rings are connected to the outer portions of one ends of the movable pressing plates in a threaded and sleeving mode, the four sets of movable pressing plates are limited, the fixed abutting blocks abut against the outer portions of the pipeline connectors, and anti-explosion protection is conducted on the pipeline connectors.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline protection, in particular to an explosion-proof protection device for a natural gas pipeline. Background Art

[0002] A natural gas pipeline is a pipeline that transports natural gas (including associated gas produced by oil fields) from the extraction site or processing plant to the city gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. Using natural gas pipelines to transport natural gas is a way to transport a large amount of natural gas on land. Natural gas pipelines account for about half of the total length of pipelines in the world.

[0003] Since natural gas is transported at low temperature and high pressure, the pressure on the pipeline is relatively high. The interfaces of the pipelines are mostly assembled with threaded engagement seals, which bear even greater pressure. Therefore, they need to be protected to prevent them from bursting due to excessive pressure.

[0004] Most of the current natural gas pipeline explosion-proof protection equipment uses a sleeve-type method to install the protection device on the outside of the pipeline interface, and uses a rigid connection method to abut the pipeline interface. When it is subjected to external stress or internal stress of the pipeline, it is easy to cause damage to the pipeline interface, and the protection effect is greatly reduced. Utility Model Content

[0005] The purpose of the utility model is to provide a natural gas pipeline explosion-proof protection device in order to solve the problems existing in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technology: a natural gas pipeline explosion-proof protection device, including an external fixing ring, which is threadedly fixed to the outside of the pipeline joint by four sets of positioning screws, and an adjustable clamping protection component is installed on one side of the external fixing ring through a fixing block, and one end of the clamping protection component is fixed by a sleeve thread.

[0007] As a further description of a natural gas pipeline explosion-proof protection device of the above technology: the compression protection assembly includes a stud rotatably mounted on the top of a fixed block, and a handle is provided on the top of the stud.

[0008] As a further description of a natural gas pipeline explosion-proof protection device of the above technology: the external thread of the fixed block is engaged with a movable pressure plate, the bottom of the movable pressure plate is elastically connected to the pressure block through a connecting compression spring, and a fixed abutment block is also fixed to the bottom of the movable pressure plate on one side of the pressure block.

[0009] As a further description of the above technology, a natural gas pipeline explosion-proof protection device: each group of the movable pressure plates is provided with a positioning thread on the top of one end away from the stud, and the ring is engaged with the positioning thread through a second internal thread groove arranged inside, and is fixed to the outside of one end of the four groups of movable pressure plates.

[0010] As a further description of a natural gas pipeline explosion-proof protection device of the above technology: the two groups of pipeline joints are sealed and connected through a third internal thread groove that is matched with each other.

[0011] As a further description of a natural gas pipeline explosion-proof protection device of the above technology: the outer fixing ring is threadedly connected to the outside of the positioning screw block through the first threaded inner groove opened inside, and the positioning screw block is fixedly arranged on the outside of the pipeline joint.

[0012] In summary, due to the adoption of the above-mentioned technology, the explosion-proof protection device for natural gas pipelines has the following beneficial effects:

[0013] 1. The utility model drives the stud to rotate by rotating the handle, so that the stud can drive the movable pressure plate to move, and the movable pressure plate drives the pressure block and the fixed abutment block to abut and fix the pipe joint. In addition, at the pipe interface, since the pressure block is connected to the movable pressure plate by a connecting compression spring, it has a buffering effect, which can avoid the rigid abutment between the pressure block and the pipe interface, and avoid the pressure block from causing damage to the pipe interface due to external vibration displacement. The collar is threadedly sleeved on the outside of one end of the movable pressure plate to limit the four groups of movable pressure plates, so that the fixed abutment block abuts against the outside of the pipe interface, thereby performing explosion-proof protection on the pipe interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of the overall structure provided according to an embodiment of the utility model is shown;

[0015] Figure 2 A structural diagram of a compression protection assembly provided according to an embodiment of the utility model is shown;

[0016] Figure 3 A pipe joint connection structure diagram according to an embodiment of the utility model is shown;

[0017] Figure 4 A schematic diagram of a sleeve structure provided according to an embodiment of the utility model is shown.

[0018] Legend: 1. External fixing ring; 2. Pipe joint; 3. Positioning screw block; 4. First internal thread groove; 5. Fixed block; 6. Stud; 7. Turn handle; 8. Movable pressure plate; 9. Fixed abutment block; 10. Connecting compression spring; 11. Pressure block; 12. Positioning thread; 13. Ring; 14. Second internal thread groove; 15. Third internal thread groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technology in the embodiments of the utility model, a natural gas pipeline explosion-proof protection device. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0020] See also Figure 1-Figure 4 As shown, the utility model provides a technical solution: a natural gas pipeline explosion-proof protection device, comprising an external fixing ring 1, the external fixing ring 1 is threadedly connected to the outside of the positioning screw block 3 through a first threaded inner groove 4 opened inside, and is used to position and fix the external fixing ring 1, the positioning screw block 3 is fixedly arranged on the outside of the pipeline joint 2, and the two groups of pipeline joints 2 are sealed and connected through a third inner thread groove 15 provided in a matching manner, and an adjustable clamping protection component is installed on one side of the external fixing ring 1 through a fixing block 5, and one end of the clamping protection component is fixed by a sleeve ring 13 threaded connection, and the clamping protection component clamps the interfaces of the two groups of pipeline joints 2 to prevent the interfaces from bursting and falling off due to excessive pressure in the pipe.

[0021] For details, please refer to Figure 1-Figure 4 As shown, the clamping protection assembly includes a stud 6 rotatably installed on the top of the fixed block 5, and a turning handle 7 is provided on the top of the stud 6. The turning handle 7 is convenient for manual shaking to drive the stud 6 to rotate. The external thread of the fixed block 5 is engaged with a movable pressure plate 8, and the bottom of the movable pressure plate 8 is elastically connected to a pressure block 11 through a connecting compression spring 10. The pressure block 11 abuts against the pipeline interface 2 under the displacement action of the movable pressure plate 8, and has a buffering effect under the action of the connecting compression spring 10, and a fixed abutment block 9 is fixedly provided on one side of the pressure block 11 at the bottom of the movable pressure plate 8. A positioning thread 12 is provided on the top of one end of each group of movable pressure plates 8 away from the stud 6, and a collar 13 is threadably engaged with the positioning thread 12 through a second internal thread groove 14 arranged inside, and is fixed to the outside of one end of the four groups of movable pressure plates 8.

[0022] In this embodiment, by rotating the handle 7 to drive the stud 6 to rotate, the stud 6 can drive the movable pressure plate 8 to move, and the movable pressure plate 8 drives the pressure block 11 and the fixed abutment block 9 to abut and fix the pipe joint 2. At the pipe interface, since the pressure block 11 is connected to the movable pressure plate 8 by a connecting compression spring 10, it has a buffering effect, which can avoid the rigid abutment between the pressure block 11 and the pipe interface, and avoid the pressure block 11 causing damage to the pipe interface due to external vibration displacement. The ring 13 is threadedly sleeved on the outside of one end of the movable pressure plate 8 to limit the four groups of movable pressure plates 8, so that the fixed abutment block abuts 9 on the outside of the pipe interface to provide explosion-proof protection for the pipe interface 2.

[0023] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical a natural gas pipeline explosion-proof protection device and its utility model concept of the utility model, shall be equivalently replaced or changed within the scope of the technology disclosed by the utility model, and shall be covered by the protection scope of the utility model.

Claims

1. A natural gas pipeline explosion-proof protection device, comprising an outer fixing ring (1), wherein the outer fixing ring (1) is threadedly fixed to the outside of a pipeline joint (2) through four sets of positioning screws (3), characterized in that: An adjustable compression protection component is installed on one side of the outer fixing ring (1) via a fixing block (5), and one end of the compression protection component is fixed by threaded sleeve connection with a collar (13).

2. A natural gas pipeline explosion-proof protection device according to claim 1, characterized in that: The compression protection assembly comprises a stud (6) rotatably mounted on the top of a fixed block (5), and a rotating handle (7) is provided at the top of the stud (6).

3. A natural gas pipeline explosion-proof protection device according to claim 2, characterized in that: The external thread of the fixed block (5) is engaged with a movable pressure plate (8), the bottom of the movable pressure plate (8) is elastically connected to a pressure block (11) via a connecting compression spring (10), and a fixed abutment block (9) is fixedly provided at the bottom of the movable pressure plate (8) on one side of the pressure block (11).

4. A natural gas pipeline explosion-proof protection device according to claim 3, characterized in that: A positioning thread (12) is provided at the top of one end of each group of movable pressure plates (8) away from the stud (6), and the collar (13) is threadably engaged with the positioning thread (12) through a second internal thread groove (14) provided inside, and is fixed to the outside of one end of the four groups of movable pressure plates (8).

5. The explosion-proof protection device for a natural gas pipeline according to claim 1, characterized in that: The two groups of pipe joints (2) are sealed and connected via a third internal thread groove (15) that is matched with the other.

6. The explosion-proof protection device for a natural gas pipeline according to claim 1, characterized in that: The outer fixing ring (1) is threadedly connected to the outside of the positioning screw block (3) through a first threaded inner groove (4) provided inside, and the positioning screw block (3) is fixedly arranged on the outside of the pipe joint (2).

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