Pig assembly

Abstract

A pipe cleaner assembly is an integrated assembly formed by integrating a liquid inlet pipeline, a pipe cleaner receiving device, a sampling pipeline and a pressure reduction pipeline, the pipe cleaner receiving device comprises a spherical pig receiver shell, the spherical pig receiver shell is a three-way pipe fitting, one end of the liquid inlet pipeline is an inlet used for being in butt joint with the upstream of an oil conveying pipeline, and the other end of the liquid inlet pipeline is an outlet used for being in butt joint with the upstream of the oil conveying pipeline. The other end of the liquid inlet pipeline is connected with a main pipeline of the spherical pig receiver shell through a manual gate valve to form a horizontal pipeline section, an outlet of the main pipeline of the spherical pig receiver shell is provided with an inserting and rotating plug cover assembly through an inserting and rotating connector, an outlet of a branch pipe of the spherical pig receiver shell is connected with a straight pipeline section, and a port of the straight pipeline section is an outlet used for being in butt joint with the downstream of an oil conveying pipeline; one end of a sampling pipeline parallel to the straight pipeline section is connected to the horizontal pipeline section, the other end of the sampling pipeline is connected with the straight pipeline section through a pressure reducing valve, and a manual gate valve and a sampler are installed on the sampling pipeline. According to the utility model, through the integrated design, the on-line sampling function is integrated while the function of receiving the pipe cleaner is realized.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline cleaning, specifically relating to a pipeline cleaning tool assembly. Background Technology

[0002] During wartime, the primary means of ensuring fuel supply relies on oil pipelines. These pipelines typically consist of several grooved steel pipes or standard flexible hoses connected by joints. The operating environment of oil pipelines is generally harsh, and the frequent connection, disassembly, and replacement of pipelines at various locations introduces impurities that cause two main problems: First, they damage the pipelines themselves. Impurities such as particulate matter, moisture, oxygen, and carbon dioxide can lead to blockages, corrosion, and scaling, reducing transport efficiency and even causing safety accidents. Second, they degrade the quality of the fuel, resulting in decreased performance of downstream equipment, increased fuel consumption, and more frequent malfunctions. Therefore, pipeline cleaning using pigs is necessary. A key challenge is how to ensure the downstream reception of pigs launched from upstream, guaranteeing normal fuel transport and monitoring fuel quality. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and to provide a pig assembly that integrates online sampling function while realizing the function of receiving pigs.

[0004] The technical solution of this utility model is: a pigging assembly, which is an integrated assembly comprising an inlet pipeline, a pigging receiving device, a sampling pipeline, and a pressure reducing pipeline. The pigging receiving device includes a pigging ball receiver housing, which is a tee fitting. One end of the inlet pipeline is an inlet for connecting to the upstream of the oil pipeline, and the other end of the inlet pipeline is connected to the main pipeline of the pigging ball receiver housing via a manual gate valve to form a horizontal pipeline section. The outlet of the main pipeline of the pigging ball receiver housing is fitted with a plug-in adapter assembly. The outlet of the branch pipe of the pigging ball receiver housing is connected to a straight pipeline section, and the port of the straight pipeline section is an outlet for connecting to the downstream of the oil pipeline. The sampling pipeline, which is arranged parallel to the straight pipeline section, is connected at one end to the horizontal pipeline section and at the other end to the straight pipeline section via a pressure reducing valve. The sampling pipeline is equipped with a manual gate valve and a sampler.

[0005] The inlet pipeline is a tee pipe. The inlet of the main pipeline of the pigging ball receiver housing is connected to the outlet of the main pipeline of the tee pipe via a manual gate valve. The inlet of the main pipeline of the tee pipe is used to connect with the upstream of the oil pipeline system. The inlet of the sampling pipeline is connected to the outlet of the branch pipe of the tee pipe. The outlet of the sampling pipeline is connected to the straight pipeline section via a pressure reducing valve.

[0006] A pressure gauge is installed on the main pipeline of the pigging receiver housing.

[0007] The integrated component is supported and fixed by a support assembly, which includes multiple supports.

[0008] The support includes a bracket and a U-shaped clamp bolted to the bracket.

[0009] The inlet is fitted with a plug-in adapter to install the plug-in cap assembly.

[0010] The port of the straight pipe section is equipped with a manual butterfly valve.

[0011] This utility model integrates the function of receiving the pipeline pig while simultaneously integrating online sampling. Through a sampler connected in parallel with the straight pipeline section, it can sample the oil in the pipeline in real time to understand the current oil quality in the pipeline. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the pig receiving device;

[0014] Figure 3 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0015] Figure 1 In this invention, the pig assembly consists of a pig receiving device, a sampler, a pressure reducing valve, a manual gate valve, a manual butterfly valve, and pig assembly pipelines, all integrated within the container. An integrated assembly comprising an inlet pipeline, a pig receiving device 1, a sampling pipeline, and a pressure-reducing pipeline. The pig receiving device 1 includes a pig receiving housing 102, which is a tee fitting. One end of the inlet pipeline is an inlet 6 for connecting to the upstream of the oil pipeline. The other end of the inlet pipeline is connected to the main pipeline of the pig receiving housing 102 via a manual gate valve 2, forming a horizontal pipeline section. The outlet of the main pipeline of the pig receiving housing 102 is fitted with a plug-in adapter 104 and a plug-in plug assembly 103. The outlet of a branch pipe of the pig receiving housing 102 is connected to a straight pipeline section. The port of the straight pipeline section is an outlet for connecting to an oil tank or oil tank downstream of the oil pipeline. A sampling pipeline, parallel to the straight pipeline section, is connected at one end to the horizontal pipeline section and at the other end to the straight pipeline section via a pressure-reducing valve 4. The sampling pipeline is equipped with a manual gate valve and a sampler 3. A manual butterfly valve 5 is installed at the port of the straight pipeline section.

[0016] Figure 2In this system, the pig receiving device 1 mainly consists of a plug-and-ad connector assembly 103, a pig receiving housing 102, an indicator assembly 101, a pressure gauge 105, and flanges. The indicator assembly 101 indicates whether the pig has arrived. The pig receiving device 1 includes a pig receiving housing 102, which is a tee fitting. The main outlet of the pig receiving housing 102 is connected to the plug-and-ad connector assembly 103 via a plug-and-ad connector 104. The branch outlets of the pig receiving housing 102 are connected to flanges. A pressure gauge 105 is installed on the main pipeline of the pig receiving housing 102.

[0017] Figure 3 In this process, when pipeline B requires cleaning, the plug cap at one end of the pig sending device C at the front end of pipeline B is opened. The pig ball 8 is then inserted into the sending body of the pig sending device C. The plug cap is then closed, and the compressed air pipe from the air source is connected to the air supply connector of the pig sending device. Compressed air is slowly introduced into the sending body of the pig sending device C. The pressure gauge is observed, and the pressure is controlled below 0.6 MPa. The compressed air is used to force the pig ball 8 from the pig sending device C into pipeline B. The pig ball 8 cleans along pipeline B. After the pig ball 8 reaches the pig receiving device, the compressed air supply is stopped, the air source is shut off, and the internal pressure of the pig sending device C is released. Simultaneously, the pig 8 cleans the pipeline, sweeping the remaining oil in pipeline B from the pig assembly A of this invention into the downstream oil tank or oil compartment. The pig sending device C consists of a pressure gauge, a sending body, a venting assembly, an air supply connector, and a plug-in type special-shaped connector assembly.

[0018] After the pig receiving device 1 of pig assembly A receives the pig ball 8, it opens the plug-in plug assembly 103 with a wrench and removes the pig ball 8. After removing the pig ball 8, the plug-in plug assembly 103 is plugged back in, and oil transfer operations can be carried out.

[0019] During oil transportation operations, when sampling is required, the manual gate valve at the front end of the sampling pipeline is opened, and the oil can enter the sampling pipeline from the horizontal pipeline section. The sampler 3 can then be used for online sampling. After sampling is completed, the manual gate valve at the front end of the sampling pipeline is closed, and the oil will only enter the downstream of the oil transportation pipeline from the straight pipeline section.

Claims

1. A pig assembly, characterized in that: An integrated assembly consisting of an inlet pipeline, a pig receiving device (1), a sampling pipeline, and a pressure reducing pipeline. The pig receiving device (1) includes a pig receiving housing (102), which is a tee fitting. One end of the inlet pipeline is an inlet (6) for connecting with the upstream of the oil pipeline. The other end of the inlet pipeline is connected to the main pipeline of the pig receiving housing (102) via a manual gate valve (2) to form a horizontal pipeline section. The outlet of the main pipeline of the pig receiving housing (102) is fitted with a plug-in adapter (104) and a plug-in plug assembly (103). The outlet of the branch pipe of the pig receiving housing (102) is connected to a straight pipeline section. The port of the straight pipeline section is an outlet for connecting with the downstream of the oil pipeline. The sampling pipeline, which is parallel to the straight pipeline section, is connected at one end to the horizontal pipeline section and at the other end to the straight pipeline section via a pressure reducing valve (4). The sampling pipeline is equipped with a manual gate valve and a sampler (3).

2. The pig assembly according to claim 1, characterized in that: The inlet pipe is a three-way pipe. The main inlet of the pigging ball receiver housing (102) is connected to the main outlet of the three-way pipe via a manual gate valve (2). The main inlet of the three-way pipe is used to connect with the upstream of the oil pipeline system. The inlet of the sampling pipe is connected to the branch outlet of the three-way pipe. The outlet of the sampling pipe is connected to the straight pipe section via a pressure reducing valve (4).

3. The pig assembly according to claim 1, characterized in that: A pressure gauge (105) is installed on the main pipeline of the pigging receiver housing (102).

4. The pig assembly according to claim 1, characterized in that: The integrated component is supported and fixed by a support assembly, which includes multiple supports (7).

5. The pig assembly according to claim 4, characterized in that: The support (7) includes a bracket and a U-shaped clamp bolted to the bracket.

6. The pig assembly according to claim 1, characterized in that: The inlet (6) is fitted with a plug-in adapter to install the plug-in plug assembly.

7. The pig assembly according to claim 1, characterized in that: The port of the straight pipe section is equipped with a manual butterfly valve (5).

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