Ball serving cylinder of pipe cleaner

Abstract

The utility model discloses a pipe cleaner ball serving cylinder in the technical field of natural gas transportation, and the pipe cleaner ball serving cylinder comprises a cylinder body, a connecting pipe, a reducing pipe, an emptying pipe and a plurality of supporting seats, the supporting seats are connected to the bottom of the cylinder body, a pipe cleaner is connected in the cylinder body, the connecting pipe is connected to the cylinder body, the emptying pipe is connected to the bottom end of the cylinder body, the reducing pipe is connected to one side of the cylinder body, and the reducing pipe is connected to the other side of the cylinder body. A horizontal sliding groove is formed in the inner wall of the barrel, an anti-retreating assembly is arranged in the sliding groove, the outer wall of the pipe cleaner is connected with an anti-retreating block matched with the anti-retreating assembly, and the anti-retreating assembly and the anti-retreating block are matched and used for preventing the pipe cleaner from retreating when the pipe cleaner is launched. Through the matching design of the sliding groove in the inner wall of the barrel and the anti-retreating assembly, the pipe cleaner has the one-way conduction characteristic, the problem that a traditional pipe cleaner accidentally retracts due to pressure fluctuation is solved, meanwhile, the mechanical locking structure does not need a complex sensor or external power, one-way propelling is achieved only through a physical structure, and the mechanical locking structure is simple and convenient to use. The failure rate is reduced, and the equipment maintenance process is simplified.

Description

Technical Field

[0001] This utility model relates to the field of natural gas transportation technology, specifically to a pig launching tube for a pipeline pig. Background Technology

[0002] In the natural gas transportation process, pipeline cleaning is crucial for ensuring the safe and stable operation of pipelines. The pig launching tube, as a key piece of equipment in pipeline cleaning operations, directly affects the cleaning effect. Currently, common pig launching tubes have some significant shortcomings in practical applications.

[0003] In existing pipeline pig launching tubes, the pig often experiences uneven force during launch. At the moment of launch, due to the internal structural design of the launching tube, the pig may be subjected to forces from different directions, preventing it from advancing stably. This uneven force distribution makes the pig prone to retreating, and in some extreme cases, it may even retract completely into the launching tube, significantly impacting the efficiency of the pigging operation. If the pig cannot be launched successfully, the pipeline cleaning task cannot be completed on time, resulting in the failure to remove impurities and dirt from the pipeline, increasing the risk of pipeline corrosion, shortening pipeline lifespan, and affecting the quality of natural gas transmission, posing potential safety hazards to the entire natural gas transportation system.

[0004] Moreover, the existing launch tube structure is insufficient to effectively address the issues of uneven force distribution and pig retraction. Its simple internal structure lacks a dedicated anti-retraction device, requiring operators to expend extra time and effort to handle pig launch failures during actual operation. This increases labor and time costs and hinders the efficient development of the natural gas transportation industry. Utility Model Content

[0005] The present invention aims to provide a pig launching tube to solve the problem that existing pigs retract or even completely retreat when launched from the launching tube due to uneven force.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pig launching tube, including a tube body, a connecting pipe, a reducer, a drain pipe, and multiple support seats. The multiple support seats are connected to the bottom of the tube body. A pig is connected inside the tube body. The connecting pipe is connected to the tube body. The drain pipe is connected to the bottom end of the tube body. The reducer is connected to one side of the tube body. The inner wall of the tube body is provided with a horizontal groove. An anti-reverse component is provided in the groove. The outer wall of the pig is connected with an anti-reverse block adapted to the anti-reverse component. The anti-reverse component and the anti-reverse block are adapted to prevent the pig from retracting when launching the pig.

[0007] The working principle of this utility model is as follows: The pig is pre-placed inside the launching cylinder. When the pig is ready to be launched, an external power source acts on it, propelling it within the cylinder. At this time, the anti-retrograde component in the horizontal groove on the inner wall of the cylinder and the anti-retrograde block on the outer wall of the pig work together. Because the anti-retrograde component and the anti-retrograde block are mutually compatible, the anti-retrograde block slides along the groove as the pig moves forward. If the pig is subjected to abnormal force and tends to regress, the anti-retrograde block and the anti-retrograde component will restrain each other, preventing the pig from regressing and ensuring that the pig can only move forward in the launching direction. This allows the pig to be launched smoothly and stably, completing the launching work before pipeline cleaning.

[0008] The beneficial effects of this utility model are as follows: 1. Through the combined design of the inner wall groove and anti-retreat component, the pig has unidirectional conduction characteristics, solving the problem of accidental retreat caused by pressure fluctuations in traditional pigs. Simultaneously, this mechanical locking structure requires no complex sensors or external power, achieving unidirectional propulsion solely through physical structure, reducing the failure rate and simplifying equipment maintenance. 2. The groove forms a limiting system, ensuring precise and controllable movement trajectory of the pig while avoiding overtravel risks. Compared to the traditional pig receiving / launching cylinder's valve-switching operation mode, this purely mechanical anti-deviation design significantly reduces the probability of misoperation and enhances equipment stability. 3. While retaining standard components such as quick-opening blind flanges and drain valves, functional upgrades are achieved through local structural improvements. This modular improvement scheme maintains compatibility with industry-standard equipment without requiring modification of the main pipeline structure, significantly reducing the implementation cost of the technical solution.

[0009] Furthermore, the anti-retrograde component comprises multiple slots disposed within the slide groove, with equal spacing between the slots. The anti-retrograde block is shaped to fit within the slots and is connected at one end to the outer wall of the pig. The equal spacing between the slots ensures uniform force distribution on the pig, preventing localized wear and improving stability.

[0010] Furthermore, a top block is connected to one end of the chute along the pig's launch direction. The top block is positioned at the end of the chute to prevent the pig from overtraveling, and the chute design prevents the pig from deviating from its track.

[0011] Furthermore, the slot is an inclined triangular shape. This triangular shape creates a one-way locking mechanism with high reverse resistance, further enhancing the anti-reverse capability.

[0012] Furthermore, the outer wall of the pig is provided with a groove, one end of which is connected to a connecting block. One end of the connecting block is connected to the pig via a spring, and the other end of the connecting block is provided with a recess. One end of the anti-retraction block is connected inside the recess.

[0013] Furthermore, the height of the groove is the same as the height of the anti-retraction block. By ensuring the groove and the anti-retraction block are at the same height, structural compactness is maintained, and motion interference is reduced. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the pig launching cylinder of the present invention;

[0015] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0016] Figure 3 for Figure 2 A magnified structural diagram at point B in the middle. Detailed Implementation

[0017] The following detailed description illustrates the specific implementation method:

[0018] The reference numerals in the accompanying drawings include: quick-opening blind flange 1, connecting pipe 2, cylinder 3, reducer 4, support base 5, top block 6, drain pipe 7, pigging device 8, groove 801, connecting block 802, recessed block 803, spring 804, anti-reverse assembly 9, slot 901, slide groove 902, and anti-reverse block 903.

[0019] The basic implementation examples are as follows: Figure 1 - Appendix Figure 3 As shown: The pig launching tube includes a tube body 3, an empty pipe 7, a reducer 4, two connecting pipes 2, and a support base 5. The two support bases 5 are fixedly connected to the bottom of the tube body 3. A quick-opening blind flange 1 is rotatably connected to the left end of the tube body 3. The pig 8 is slidably connected inside the tube body 3. The two connecting pipes 2 are fixedly connected to the top of the tube body 3. The empty pipe 7 is fixedly connected to the bottom end of the tube body 3. The reducer 4 is fixedly connected to the right side of the tube body 3. The upper and lower inner walls of the tube body 3 are provided with horizontal grooves 902. A top block 6 is fixedly connected to the right end of the groove 902. Five slots 901 are provided in the groove 902. The groove 901 is a triangular shape tilted to the left. The spacing between adjacent grooves 901 is the same. The outer wall of the pig 8 has a groove 801 on the left end. The height of the groove 801 is the same as the height of the anti-retraction block 903. The right end of the groove 801 is rotatably connected to the anti-retraction block 903. The anti-retraction block 903 is adapted to the shape of the groove 901 and is slidably connected in the groove 901. The left end of the groove 801 is horizontally fixed to the connecting block 802 by a spring 804. The right side of the connecting block 802 has a recess 803. The length of the anti-retraction block 903 is the same as the length of the groove 801.

[0020] The specific implementation process is as follows: When the pig 8 is pushed by pressure, it will move along the slide groove 902 inside the cylinder 3. At the same time, the anti-reverse block 903 connected to the outer wall of the pig 8 will be embedded in the slot 901. This design allows the pig 8 to move forward in one direction because the triangular inclined surface of the slot 901 provides a smooth path in the forward direction of the pig 8. However, in the reverse direction, the pig 8 will be stuck due to the limitation of the shape of the slot 901, thus effectively preventing the pig 8 from retracting. At the same time, the top block 6 set at the right end of the slide groove 902 further ensures that the pig 8 will not move beyond its travel range. The slide groove 902 itself also plays a role in preventing the pig 8 from deviating from the track.

[0021] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pig launching tube, comprising a tube body, a connecting pipe, a reducer, a drain pipe, and multiple support seats, wherein the multiple support seats are connected to the bottom of the tube body, a pig is connected inside the tube body, the connecting pipe is connected to the tube body, the drain pipe is connected to the bottom end of the tube body, and the reducer is connected to one side of the tube body, characterized in that: The inner wall of the barrel is provided with a horizontal sliding groove, the sliding groove is provided with an anti-back-off assembly, the outer wall of the pipe pig is connected with an anti-back-off block which is adapted to the anti-back-off assembly, and the anti-back-off assembly and the anti-back-off block are adapted to prevent the pipe pig from back-off when the pipe pig is launched.

2. The go-devil launching barrel of claim 1, wherein: The anti-back-off assembly is a plurality of clamping grooves arranged in the sliding groove, the spacing between the clamping grooves is the same, the anti-back-off block is adapted to the shape of the clamping groove, the anti-back-off block is connected in the clamping groove, and one end of the anti-back-off block is connected with the outer wall of the pipe pig.

3. The go-devil launching barrel of claim 2, wherein: One end of the sliding groove along the launching direction of the pipe pig is connected with a top block.

4. The go-devil launching barrel of claim 3, wherein: The clamping groove is an inclined triangular shape.

5. The go-devil launching barrel of claim 4, wherein: The outer wall of the pipe pig is provided with a groove, one end of the groove is connected with a connecting block, one end of the connecting block is connected with the pipe pig through a spring, the other end of the connecting block is provided with a recessed block, and one end of the anti-back-off block is connected in the recessed block.

6. The go-devil launching barrel of claim 5, wherein: The height of the groove is consistent with the height of the anti-back-off block.

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