Auxiliary device for disconnecting and connecting high-pressure liquid inlet and return pipeline

Abstract

The utility model relates to the technical field of disassembly and connection of high-pressure pipelines, in particular to an auxiliary device for disassembly and connection of a high-pressure liquid inlet and return pipeline, and provides a novel auxiliary device for disassembly and connection of the high-pressure liquid inlet and return pipeline in order to solve the problems that the danger coefficient is large when the high-pressure liquid inlet and return pipeline is disassembled and the work efficiency is low when multiple connection is conducted. Comprising two detachable hoops and a chain hoist, the two detachable hoops are clamped and fixed to the positions, close to pipe heads, of two sections of high-pressure liquid pipelines respectively, and hanging rings connected with two lifting hooks on the chain hoist in a matched mode are fixed to the circumferential walls of the two detachable hoops respectively. According to the utility model, the contraction force after the pipelines are dismounted is removed through the chain lever block, and meanwhile, the connection distance between the two pipelines is shortened, so that the connection of the pipelines is more convenient, the working efficiency of replacing seals or the pipelines is improved, the time cost is saved, and the danger coefficient of operation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure pipeline disassembly and connection technology, specifically an auxiliary device for disassembling and connecting high-pressure inlet and outlet liquid pipelines. Background Technology

[0002] The high-pressure inlet and outlet hydraulic pipes in underground coal mines are the power supply channels for the supports, and are crucial to the stability and reliability of the entire hydraulic system at the working face. For example... Figure 1 As shown, the high-pressure inlet and return pipelines are suspended by two lifting anchor rods 1, two lifting connectors 2, and lifting clamps 3 secured to the non-connected ends of the two high-pressure inlet and return pipelines 6. The two ends of the two lifting connectors 2 are connected to the corresponding lifting anchor rods 1 and lifting clamps 3, respectively. The connection between the two high-pressure inlet and return pipelines 6 is achieved by a pipeline straight connector 4 and a U-shaped pin 5. To ensure personnel safety, the entire working surface is typically laid in a naturally straight line when the high-pressure inlet and return pipelines 6 are laid (as is known to those skilled in the art, naturally straightening is not a taut state; there is a certain amount of slack when naturally straightening becomes taut), without leaving any slack for disassembly at the pipeline interfaces.

[0003] During production, when leaks occur in the high-pressure inlet and return pipelines due to seal damage or pipeline rupture, maintenance work such as seal replacement, disassembly, and reconnection is required. However, during this maintenance, after disassembling the two sections of the high-pressure inlet and return pipeline, elastic shrinkage (shrinkage amount reaching 150-300mm) may occur. Figure 1 As shown, there are safety risks caused by U-shaped pin popping out and emulsion splashing. At the same time, the mechanical balance risk of the pipeline needs to be manually resisted when reconnecting. The reconnection requires multiple people to work together and consumes a lot of time (it is estimated that the maintenance of each node takes an average of 35-40 minutes. If the pipeline diameter is large, the maintenance time will increase accordingly). Summary of the Invention

[0004] In order to solve the problems of high risk during disassembly and low efficiency during reconnection of high-pressure inlet and outlet liquid pipes, this utility model provides a new auxiliary device for disassembling and reconnecting high-pressure inlet and outlet liquid pipes.

[0005] This utility model is achieved using the following technical solution:

[0006] An auxiliary device for disconnecting and connecting high-pressure inlet and outlet liquid pipelines includes two disconnection clamps and a chain hoist, which are respectively fixed to the ends of two high-pressure inlet and outlet liquid pipelines near the pipe ends (as is known to those skilled in the art, the pipe ends refer to the ends where the high-pressure inlet and outlet liquid pipelines are connected to the adjacent high-pressure inlet and outlet liquid pipelines). The circumferential walls of the two disconnection clamps are respectively fixed with hanging rings that are adapted to and connected to two hooks on the chain hoist.

[0007] The reconnection procedure is as follows: 1) Secure the two disconnect clamps to the two high-pressure inlet and outlet pipes respectively; 2) Hang the two hooks on the chain hoist on the two hanging rings of the two disconnect clamps respectively; 3) Operate the chain hoist to retract the chain, thereby bringing the two high-pressure inlet and outlet pipes closer together until the overlap of the two high-pressure inlet and outlet pipes is sufficient for insertion, then stop operating the chain hoist; 4) Reconnect and fix the two high-pressure inlet and outlet pipes through the pipe straight connector and U-pin; 5) Remove the auxiliary device to complete the reconnection of the high-pressure inlet and outlet pipes.

[0008] The following are the operating steps for disassembling and replacing the sealing ring: 1) Secure the two disassembly clamps to the two high-pressure inlet and outlet liquid pipes respectively; 2) Hang the two hooks on the chain hoist on the two hanging rings of the two disassembly clamps respectively; 3) Operate the chain hoist to retract the chain on the chain hoist, thereby bringing the two high-pressure inlet and outlet liquid pipes closer together, until both high-pressure inlet and outlet liquid pipes retract inward and form an arc shape, indicating that they are no longer in a taut state, then stop operating the chain hoist; 4) Remove the U-pin, replace the sealing ring, and reinsert the U-pin; 5) Remove this auxiliary device to complete the operation of replacing the sealing ring of the high-pressure inlet and outlet liquid pipes.

[0009] Furthermore, the chain hoist is a chain lever hoist, which is convenient to operate and has strong applicability.

[0010] Furthermore, the distance between the coupling and the end of the high-pressure inlet / outlet pipe is 200-300mm.

[0011] The beneficial effects of this utility model are as follows: This utility model eliminates the "contraction" force after pipeline removal by using a chain lever hoist. At the same time, by shortening the connection distance between two pipelines, it makes pipeline connection more convenient, improves the efficiency of replacing seals or pipelines, saves time and costs, and reduces the risk factor of the operation. Attached Figure Description

[0012] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the disassembly of a traditional high-pressure inlet and outlet liquid pipeline;

[0015] Figure 2Schematic diagram of a chain lever hoist;

[0016] Figure 3 This is a schematic diagram illustrating the use of the auxiliary device described in this utility model during reconnection;

[0017] Figure 4 This is a schematic diagram showing the state of the auxiliary device described in this utility model during reconnection;

[0018] Figure 5 This is a schematic diagram showing the state of the auxiliary device described in this utility model during disassembly.

[0019] In the diagram: 1-Lifting anchor rod, 2-Lifting connector, 3-Lifting clamp, 4-Pipe straight connector, 5-U-pin, 6-High pressure inlet and outlet pipe, 7-Disassembly clamp, 8-Chain hoist, 81-Hook, 82-Chain, 9-Hanging ring. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0021] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0023] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] An auxiliary device for connecting and disconnecting high-pressure inlet and outlet liquid pipelines includes two connection clamps 7, each secured to the ends of two sections of high-pressure inlet and outlet liquid pipelines 6, and a chain hoist 8. Figure 2 As shown, two detachable clamps 7 are respectively fixed with hanging rings 9 that are adapted to connect with two hooks 81 on the chain hoist 8.

[0025] The reconnection procedure is as follows: Figure 3 As shown, 1) Secure the two disassembly clamps 7 onto the two high-pressure inlet and outlet liquid lines 6 respectively; 2) Hook the two hooks 81 on the chain hoist 8 onto the two hanging rings 9 of the two disassembly clamps 7 respectively; 3) Operate the chain hoist 8 to retract the chain 82 on the chain hoist 8, thereby bringing the two high-pressure inlet and outlet liquid lines 6 closer together until the overlap of the two high-pressure inlet and outlet liquid lines is sufficient for insertion. Figure 4 As shown, stop operating the chain hoist 8; 4) reconnect and fix the two high-pressure inlet and outlet liquid pipelines through the pipeline straight connector 4 and U-shaped pin 5; 5) remove the auxiliary device to complete the reconnection of the high-pressure inlet and outlet liquid pipeline 6.

[0026] The disassembly and replacement of the sealing rings are performed as follows: 1) Secure the two disassembly clamps 7 to the two high-pressure inlet and outlet pipe sections respectively; 2) Hook the two hooks 81 on the chain hoist 8 onto the two hanging rings 9 of the two disassembly clamps 7 respectively; 3) Operate the chain hoist 8 to retract the chain 82, thereby bringing the two high-pressure inlet and outlet pipe sections closer together, until both sections retract inward and form an arc shape, i.e., no longer maintaining a taut state. Figure 5 As shown, stop operating chain hoist 8; 4) Remove U-pin 5, replace the sealing ring, and reinsert U-pin 5; 5) Remove the auxiliary device to complete the operation of replacing the sealing ring of the high-pressure inlet and outlet pipeline.

[0027] In practice, the chain hoist 8 is a chain lever hoist, which is convenient to operate and has strong applicability.

[0028] In this specific embodiment, the distance between the disassembly clamp 7 and the pipe head of the high-pressure inlet / outlet pipe 6 is 200-300mm.

[0029] The beneficial effects of using this device:

[0030] 1. Improved work efficiency:

[0031] 1) Time required for a single maintenance session: Traditional 35 minutes → This device 5 minutes

[0032] 2) Staffing needs: 3 people → 1 person

[0033] 2. Enhanced security:

[0034] 1) Splash accident rate: decreased from 3.2% to 0.05%.

[0035] 2) Elimination of the risk of U-shaped pin popping out

[0036] 3. Economic benefits (calculated based on a mine with an annual output of 10 million tons):

[0037] 1) Annual maintenance labor time savings: 1000 hours

[0038] 2) Reduce emulsion loss: 15m³ / year

[0039] 3) Overall cost savings: RMB 225,000 per year

[0040] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and all should be covered by the protection scope of the claims.

Claims

1. An auxiliary device for connecting and disconnecting high-pressure inlet and outlet liquid pipelines, characterized in that, It includes two disassembly clamps (7) that are respectively fixed to the ends of the two high-pressure inlet and outlet pipes (6) and a chain hoist (8). The two disassembly clamps (7) have hanging rings (9) that are adapted to and connected to the two hooks (81) on the chain hoist (8).

2. The auxiliary device for disconnecting and connecting high-pressure inlet and outlet liquid pipelines according to claim 1, characterized in that, The chain hoist (8) is a chain lever hoist.

3. The auxiliary device for disconnecting and connecting high-pressure inlet and outlet liquid pipelines according to claim 2, characterized in that, The distance between the detachable clamp (7) and the pipe end of the high-pressure inlet / outlet pipe (6) is 200-300mm.

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