Environment-friendly sampling valve for oil pipeline

Abstract

The environment-friendly sampling valve comprises the oil conveying pipeline, a sampling assembly is arranged on the outer wall of one side of the oil conveying pipeline, a pollution discharge assembly is arranged on the outer wall of the other side of the oil conveying pipeline, the sampling assembly comprises a sampling valve, the bottom of the sampling valve is in threaded connection with an inflation assembly, the inflation assembly comprises a barrel, and a threaded groove is formed in the top of the inner wall of the barrel. A one-way valve I is arranged at the top of the barrel; after sampling is finished, the piston rod can be rotated, so that the top end of the piston rod is separated from the threaded groove, and then the piston rod is pushed back and forth to move, so that external air continuously enters the sampling valve and blows residual crude oil in the sampling valve into the sampling pipe and the connecting flange I; crude oil in the sampling pipe can flow to the sealing cover, the crude oil can be cleaned away by opening the sealing cover by a worker subsequently, meanwhile, the crude oil in the first connecting flange can flow into the oil conveying pipeline, cleaning of the crude oil in the sampling assembly is achieved, and the situation that subsequent sampling is affected by residual oil dirt in the sampling assembly is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crude oil transportation, in particular to an environmentally friendly sampling valve for an oil pipeline. Background Art

[0002] The transportation of crude oil in oil pipelines requires regular sampling for testing and analysis to determine changes in crude oil quality parameters, which plays an extremely important role in oil field management.

[0003] For example, an environmentally friendly sampling valve for oil pipelines with application number 201820570366.6 and authorization announcement date 20181214 includes: a main valve body, which is a metal cylinder with two holes in the vertical direction, and the main valve body is fixedly connected to the oil pipeline by welding; a valve control screw, which is rotated by a special tool to control the opening and closing of the valve; the valve control screw is arranged in a hole in the main valve body, and the valve control screw is located at the outer end and is a pentagonal body, which can be rotated by a special inner pentagonal wrench; a discharge conduit, which is a polymer material and can be disassembled and replaced. The environmentally friendly sampling valve for oil pipelines has the advantages of simple installation, environmental protection and safety.

[0004] During the crude oil transportation sampling process, a special sampling valve is required as a partner. The sampling valve is a valve used to obtain medium samples in pipelines or equipment. In many occasions where chemical analysis of medium samples is required frequently, a special sampling valve is often used. The sampling valve is installed on the sampling branch line of the main well fluid pipeline at the oil well outlet through a short-circuit threaded connection. The sampling valve is opened to release the sampling liquid for sampling. However, after long-term use, a large amount of oil will accumulate on the inner wall of the sampling tube to form oil stains, which will lead to cross-contamination problems during subsequent sampling, affecting the results of subsequent sample detection. Therefore, it is urgent to design an environmentally friendly sampling valve for oil pipelines to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an environmentally friendly sampling valve for oil pipelines to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An environmentally friendly sampling valve for an oil pipeline comprises an oil pipeline, a sampling assembly is provided on the outer wall of one side of the oil pipeline, a sewage discharge assembly is provided on the outer wall of the other side of the oil pipeline, the sampling assembly comprises a sampling valve, an air pumping assembly is threadedly connected to the bottom of the sampling valve, the air pumping assembly comprises a cylinder, a threaded groove is provided on the top of the inner wall of the cylinder, a one-way valve is provided on the top of the cylinder, a piston rod is slidably inserted into the cylinder, and the top of the piston rod is threadedly connected to the inside of the threaded groove, a piston is sleeved on the outside of the piston rod, and a one-way valve is inserted into the outer wall of one side of the piston top.

[0008] Furthermore, a connecting flange 1 is installed at one end of the sampling valve by bolts, and the connecting flange 1 is welded to the outer wall of one side of the oil pipeline.

[0009] Furthermore, the sewage discharge assembly includes a sewage discharge valve, one end of which is provided with a connecting flange 2 by bolts, and the connecting flange 2 is welded to the outer wall on the other side of the oil pipeline.

[0010] Furthermore, a sampling tube is installed at one end of the sampling valve via bolts, and a sewage pipe is installed at one end of the sewage valve via bolts.

[0011] Furthermore, a cover is installed on the outer wall of one side of the sampling tube and the sewage pipe through a hinge, and one end of the cover is clamped on the sampling tube and the sewage pipe, and a buckle is welded on the outer wall of one side of the cover.

[0012] Furthermore, a latch is installed on the outer wall of one side of the sampling tube and the sewage pipe through bolts, and one end of the latch is clamped on the buckle.

[0013] In the above technical solution, the utility model provides an environmentally friendly sampling valve for oil pipelines, which has the following beneficial effects:

[0014] (1) Through the provided air pumping assembly, after the sampling of the sampling tube is completed, the worker can rotate the piston rod so that the top of the piston rod is disengaged from the threaded groove, and then push the piston rod back and forth to allow the outside air to continuously enter the sampling valve, and then the air will blow the residual crude oil in the sampling valve into the sampling tube and the connecting flange 1. With continuous air pumping, the crude oil in the sampling tube will flow to the sealing cap. The subsequent workers can open the sealing cap to clean up the crude oil. At the same time, the crude oil in the connecting flange 1 will flow into the oil pipeline, thereby realizing the cleaning of the crude oil in the sampling assembly and avoiding the residual oil pollution in the sampling assembly, which affects the subsequent sampling.

[0015] (2) The cover, latch and buckle are provided, and the cover is installed on the sampling tube and the sewage pipe through hinges, which can prevent external impurities such as dust and stones from entering the sampling tube and the sewage pipe. At the same time, the cooperation of the latch and the buckle can make the cover firmly seal the sampling tube and the sewage pipe, avoiding the problem of the cover falling off due to external vibration, which causes external impurities to enter the sampling tube and the sewage pipe.

[0016] (3) By setting up the sewage discharge assembly, before sampling, the worker can pull open the latch so that the cover is no longer restricted. Then the worker can pull open the cover to open the sewage pipe, and then unscrew the sewage valve to discharge the dead oil in the oil pipeline, thereby avoiding the dead oil remaining in the oil pipeline and the sampling assembly to affect the subsequent sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 The utility model provides an overall structural schematic diagram of an environmentally friendly sampling valve for an oil pipeline.

[0019] Figure 2 The present invention is a schematic diagram of the structure of a sampling assembly provided in an embodiment of an environmentally friendly sampling valve for an oil pipeline.

[0020] Figure 3 The utility model is a schematic diagram of the structure of a sewage discharge component provided in an embodiment of an environmentally friendly sampling valve for an oil pipeline.

[0021] Figure 4 The utility model is a schematic diagram of the structure of an air pumping assembly provided in an embodiment of an environmentally friendly sampling valve for an oil pipeline.

[0022] Description of reference numerals:

[0023] 1. Oil pipeline; 2. Sampling assembly; 3. Drain assembly; 4. Connection flange 1; 5. Sampling valve; 6. Sampling tube; 7. Inflating assembly; 8. Latch; 9. Cover; 10. Buckle; 11. Connection flange 2; 12. Drain valve; 13. Drain pipe; 14. Cylinder; 15. Threaded groove; 16. One-way valve 1; 17. Piston rod; 18. Piston; 19. One-way valve 2. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-4As shown, an environmentally friendly sampling valve for an oil pipeline provided by an embodiment of the utility model comprises an oil pipeline 1, a sampling assembly 2 is provided on the outer wall of one side of the oil pipeline 1, a sewage discharge assembly 3 is provided on the outer wall of the other side of the oil pipeline 1, the sampling assembly 2 comprises a sampling valve 5, an air pumping assembly 7 is threadedly connected to the bottom of the sampling valve 5, the air pumping assembly 7 comprises a cylinder 14, a threaded groove 15 is provided on the top of the inner wall of the cylinder 14, a one-way valve 16 is provided on the top of the cylinder 14, a piston rod 17 is slidably inserted into the cylinder 14, and the top of the piston rod 17 is threadedly connected to the inside of the threaded groove 15, a piston 18 is sleeved on the outside of the piston rod 17, and a one-way valve 2 19 is inserted into the outer wall of one side of the top of the piston 18.

[0026] Specifically, in this embodiment, an oil pipeline 1 is included, a sampling assembly 2 is provided on the outer wall of one side of the oil pipeline 1, a sewage discharge assembly 3 is provided on the outer wall of the other side of the oil pipeline 1, the sampling assembly 2 includes a sampling valve 5, and a gas pumping assembly 7 is threadedly connected to the bottom of the sampling valve 5, and the gas pumping assembly 7 includes a cylinder 14, a threaded groove 15 is provided on the top of the inner wall of the cylinder 14, a one-way valve 16 is provided on the top of the cylinder 14, a piston rod 17 is slidably inserted inside the cylinder 14, the piston rod 17 is rotated to make the top of the piston rod 17 disengage from the threaded groove 15, and then the piston rod 17 is pushed back and forth to move, so that outside air continuously enters the sampling valve 5, and then the air will blow the residual crude oil in the sampling valve 5 into the sampling tube 6 and the connecting flange 4, and with continuous gas pumping, the crude oil in the sampling tube 6 will flow to the sealing cap 9, subsequent workers can open the cover 9 to clean up the crude oil, and at the same time, the crude oil in the connecting flange 4 will flow into the oil pipeline 1, thereby realizing the cleaning of the crude oil in the sampling component 2, avoiding the residual oil in the sampling component 2 to affect the subsequent sampling, and the top of the piston rod 17 is provided with a thread, which can fix the piston rod 17 inside the thread groove 15 to avoid affecting the flow of crude oil in the sampling valve 6 during sampling, and the top of the piston rod 17 is threadedly connected to the inside of the thread groove 15, the outside of the piston rod 17 is sleeved with a piston 18, and a one-way valve 19 is inserted into the outer wall of one side of the top of the piston 18. When the piston rod 17 is pulled, the one-way valve 19 facilitates the outside air to enter the space formed by the piston 18 and the cylinder 14, and the one-way valve 16 facilitates the air in the space to flow into the sampling valve 6.

[0027] The utility model provides an environmentally friendly sampling valve for an oil pipeline. After the sampling of the sampling tube 6 is completed, the worker can rotate the piston rod 17 to make the top end of the piston rod 17 disengage from the threaded groove 15, and then push the piston rod 17 back and forth to allow external air to continuously enter the sampling valve 5, and then the air will blow the residual crude oil in the sampling valve 5 into the sampling tube 6 and the connecting flange 4, and with continuous air pumping, the crude oil in the sampling tube 6 will flow to the sealing cover 9, and the subsequent workers can open the sealing cover 9 to clean up the crude oil, and at the same time, the crude oil in the connecting flange 4 will flow into the oil pipeline 1, thereby realizing the cleaning of the crude oil in the sampling component 2, avoiding the residual oil pollution in the sampling component 2 and affecting the subsequent sampling.

[0028] In one embodiment provided by the present utility model, Figure 2-3 As shown, a connecting flange 4 is installed at one end of the sampling valve 5 by bolts, and the connecting flange 4 is welded to the outer wall of one side of the oil pipeline 1. The drain assembly 3 includes a drain valve 12, and a connecting flange 2 11 is installed at one end of the drain valve 12 by bolts, and the connecting flange 2 11 is welded to the outer wall of the other side of the oil pipeline 1. A sampling tube 6 is installed at one end of the sampling valve 5 by bolts. When the sampling valve 5 is unscrewed, the crude oil will flow into the external sample collection device through the sampling tube 6. A drain pipe 13 is installed at one end of the drain valve 12 by bolts. When the drain valve 12 is opened, the dead oil in the oil pipeline 1 and the sampling assembly 2 can be discharged through the drain pipe 13, so as to avoid the dead oil remaining in the oil pipeline 1 and the sampling assembly 2 affecting the subsequent sampling.

[0029] In another embodiment provided by the present utility model, Figure 2-3 As shown, the outer walls of one side of the sampling tube 6 and the sewage pipe 13 are both installed with a cover 9 through a hinge. The cover 9 is installed on the sampling tube 6 and the sewage pipe 13 through a hinge, which can prevent external impurities such as dust and stones from entering the sampling tube 6 and the sewage pipe 13, and one end of the cover 9 is clamped on the sampling tube 6 and the sewage pipe 13. A buckle 10 is welded on the outer wall of one side of the cover 9, and a latch 8 is installed on the outer wall of one side of the sampling tube 6 and the sewage pipe 13 through bolts. The cooperation of the latch 8 and the buckle 10 can make the cover 9 firmly block the sampling tube 6 and the sewage pipe 13, and avoid the problem of the cover 9 falling off due to external vibration, which causes external impurities to enter the sampling tube 6 and the sewage pipe 13, and one end of the latch 8 is clamped on the buckle 10.

[0030] Example 1

[0031] An environmentally friendly sampling valve for an oil pipeline comprises an oil pipeline 1, a sampling assembly 2 is provided on the outer wall of one side of the oil pipeline 1, a sewage discharge assembly 3 is provided on the outer wall of the other side of the oil pipeline 1, the sampling assembly 2 comprises a sampling valve 5, a gas pumping assembly 7 is threadedly connected to the bottom of the sampling valve 5, the gas pumping assembly 7 comprises a cylinder 14, a threaded groove 15 is provided on the top of the inner wall of the cylinder 14, a one-way valve 16 is provided on the top of the cylinder 14, a piston rod 17 is slidably inserted inside the cylinder 14, the piston rod 17 is rotated to make the top of the piston rod 17 disengage from the threaded groove 15, and then the piston rod 17 is pushed back and forth to move, so that the outside air continuously enters the sampling valve 5, and then the air blows the residual crude oil in the sampling valve 5 into the sampling tube 6 and the connecting flange 4, and with continuous gas pumping, the crude oil in the sampling tube 6 will flow to At the cover 9, subsequent workers can open the cover 9 to clean up the crude oil. At the same time, the crude oil in the connecting flange 4 will flow into the oil pipeline 1, thereby realizing the cleaning of the crude oil in the sampling component 2, avoiding the residual oil stains in the sampling component 2 to affect the subsequent sampling. The top of the piston rod 17 is provided with a thread, which can fix the piston rod 17 inside the thread groove 15 to avoid affecting the flow of crude oil in the sampling valve 6 during sampling, and the top of the piston rod 17 is threadedly connected to the inside of the thread groove 15. The outside of the piston rod 17 is sleeved with a piston 18, and a one-way valve 19 is inserted into the outer wall of one side of the top of the piston 18. When the piston rod 17 is pulled, the one-way valve 19 facilitates the outside air to enter the space formed by the piston 18 and the cylinder 14, and the one-way valve 16 facilitates the air in the space to flow into the sampling valve 6.

[0032] Example 2

[0033] This embodiment is further limited on the basis of the embodiment 1, wherein a connection flange 4 is installed at one end of the sampling valve 5 by bolts, and the connection flange 4 is welded to the outer wall of one side of the oil pipeline 1. The sewage assembly 3 includes a sewage valve 12, and a connection flange 11 is installed at one end of the sewage valve 12 by bolts, and the connection flange 11 is welded to the outer wall of the other side of the oil pipeline 1. A sampling tube 6 is installed at one end of the sampling valve 5 by bolts. When the sampling valve 5 is unscrewed, the crude oil will flow into the external sample collection device through the sampling tube 6. A sewage pipe 13 is installed at one end of the sewage valve 12 by bolts. When the sewage valve 12 is opened, the dead oil in the oil pipeline 1 and the sampling assembly 2 can be discharged through the sewage pipe 13, so as to avoid residual oil in the oil pipeline 1 and the sampling assembly 2. Dead oil is left, which affects subsequent sampling; a cover 9 is installed on the outer wall of one side of the sampling tube 6 and the sewage pipe 13 through a hinge, and the cover 9 is installed on the sampling tube 6 and the sewage pipe 13 through a hinge, which can prevent external impurities such as dust and stones from entering the sampling tube 6 and the sewage pipe 13, and one end of the cover 9 is clamped on the sampling tube 6 and the sewage pipe 13, and a buckle 10 is welded on the outer wall of one side of the cover 9, and a latch 8 is installed on the outer wall of one side of the sampling tube 6 and the sewage pipe 13 through bolts. The cooperation of the latch 8 and the buckle 10 can make the cover 9 firmly block the sampling tube 6 and the sewage pipe 13, and avoid the problem of the cover 9 falling off due to external vibration, which causes external impurities to enter the sampling tube 6 and the sewage pipe 13, and one end of the latch 8 is clamped on the buckle 10.

[0034] Working principle: Before sampling, the worker can open the latch 8 so that the cover 9 is no longer restricted, and then the worker can open the cover 9 to open the drain pipe 13, and then unscrew the drain valve 12 to discharge the dead oil in the oil pipeline 1, so as to avoid the dead oil remaining in the oil pipeline 1 and the sampling component 2 affecting the subsequent sampling. When sampling subsequently, the drain valve 12 can be closed, and then the above steps can be repeated to open the cover 9 on the sampling tube 6, and then the sampling valve 5 can be unscrewed, and then the crude oil in the oil pipeline 1 will flow into the sampling tube 6 through the connecting flange 4 and the sampling valve 5, and then flow out to the sample collection device prepared by the outside world. After the subsequent sampling is completed, the piston rod 17 can be rotated to make the top end of the piston rod 17 disengage from the threaded groove 15, and then the piston rod 17 is pushed back and forth to allow the outside air to continuously enter the sampling valve 5, and then the air will blow the residual crude oil in the sampling valve 5 into the sampling tube 6 and the connecting flange 4, and with continuous pumping, the crude oil in the sampling tube 6 will flow to the sealing cover 9, and subsequent workers can open the sealing cover 9 to clean up the crude oil, and at the same time, the crude oil in the connecting flange 4 will flow into the oil pipeline 1, thereby realizing the cleaning of the crude oil in the sampling component 2, avoiding the residual oil pollution in the sampling component 2, and affecting the subsequent sampling.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An environmentally friendly sampling valve for an oil pipeline, comprising an oil pipeline (1), characterized in that: A sampling assembly (2) is provided on the outer wall of one side of the oil pipeline (1), and a sewage discharge assembly (3) is provided on the outer wall of the other side of the oil pipeline (1). The sampling assembly (2) includes a sampling valve (5), and the bottom of the sampling valve (5) is threadedly connected to an air pumping assembly (7). The air pumping assembly (7) includes a cylinder (14), and a thread groove (15) is provided on the top of the inner wall of the cylinder (14). A one-way valve (16) is provided on the top of the cylinder (14). A piston rod (17) is slidably inserted into the cylinder (14), and the top of the piston rod (17) is threadedly connected to the inside of the thread groove (15). A piston (18) is sleeved on the outside of the piston rod (17), and a one-way valve (19) is inserted into the outer wall of one side of the top of the piston (18).

2. The environmentally friendly sampling valve for oil pipeline according to claim 1, characterized in that: One end of the sampling valve (5) is mounted with a connecting flange (4) via bolts, and the connecting flange (4) is welded to the outer wall of one side of the oil pipeline (1).

3. The environmentally friendly sampling valve for oil pipeline according to claim 1, characterized in that: The sewage discharge assembly (3) comprises a sewage discharge valve (12), one end of which is mounted with a second connecting flange (11) by means of bolts, and the second connecting flange (11) is welded to the outer wall of the other side of the oil pipeline (1).

4. The environmentally friendly sampling valve for oil pipeline according to claim 3, characterized in that: A sampling tube (6) is installed at one end of the sampling valve (5) via bolts, and a sewage discharge pipe (13) is installed at one end of the sewage discharge valve (12) via bolts.

5. The environmentally friendly sampling valve for oil pipeline according to claim 4, characterized in that: The outer walls of one side of the sampling tube (6) and the sewage pipe (13) are both provided with a cover (9) via a hinge, and one end of the cover (9) is clamped on the sampling tube (6) and the sewage pipe (13), and a buckle (10) is welded on the outer wall of one side of the cover (9).

6. The environmentally friendly sampling valve for oil pipeline according to claim 5, characterized in that: A latch (8) is installed on the outer wall of one side of the sampling tube (6) and the sewage discharge pipe (13) through bolts, and one end of the latch (8) is clamped on the buckle (10).

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