Three-way plug valve for petroleum pipeline

Abstract

The utility model relates to the technical field of plug valves, in particular to a three-way plug valve for a petroleum pipeline, which comprises a three-way valve body, a plug bush is arranged in the three-way valve body, through holes are equidistantly formed in the surface of the outer side of the plug bush, and filter screens are fixed in the through holes through bolts. A cock is arranged in the cock bushing, three-way liquid passing grooves are formed in the cock at equal intervals in a penetrating mode, a connecting column is arranged at the top end of the cock, and a hexagonal column is arranged at the top end of the connecting column in a sleeving mode; the filter screen is arranged in the through hole, impurities in the petroleum can be filtered out, the petroleum impurities are prevented from entering the space between the plug bush and the plug, and the plug is prevented from being abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of plug valves, in particular to a three-way plug valve for petroleum pipelines. Background Art

[0002] The plug valve is a rotary valve in the shape of a closing piece or a plunger. It is a valve that can be opened or closed by rotating 90 degrees to connect or separate the channel opening on the valve plug with the channel opening on the valve body. The three-way plug valve is a type of plug valve and is an important equipment on the oil pipeline.

[0003] The existing three-way pipe plug valve has no filtering structure inside. When the oil flows through the plug bushing and the through holes on the plug, impurities in the oil will remain between the plug bushing and the plug. After long-term use, it will cause the plug to wear, thereby affecting its sealing performance. Therefore, a three-way plug valve for oil pipelines is proposed. A filter screen is installed in the through hole on the plug bushing to prevent impurities in the oil from entering between the plug bushing and the plug, thereby avoiding plug wear. Utility Model Content

[0004] Aiming at the problems in the prior art, the utility model provides a three-way plug valve for oil pipelines. A filter screen is installed in the through hole of the plug bushing to prevent impurities in the oil from entering between the plug bushing and the plug, thereby avoiding wear of the plug.

[0005] The technical solution adopted by the utility model to solve the technical problem is a three-way plug valve for oil pipelines, comprising a three-way valve body, a plug bushing is arranged inside the three-way valve body, through holes are opened at equal intervals on the outer surface of the plug bushing, and a filter screen is fixed inside the through hole by bolts;

[0006] A cock is arranged inside the cock bushing, three liquid grooves are evenly spaced through the cock, a connecting column is arranged at the top of the cock, and a hexagonal column is sleeved on the top of the connecting column.

[0007] By adopting the above technical solution, oil enters the three-way valve body and flows through the through hole and the three-way liquid tank. A filter is arranged in the through hole to filter impurities in the oil, prevent the oil impurities from entering between the plug bushing and the plug, and avoid plug wear.

[0008] Specifically, a cover plate is sleeved on the outer side of the connecting column located at the top of the three-way valve body, and the cover plate is fixed to the top of the three-way valve body by bolts.

[0009] Specifically, a sealing ring is sleeved between the cover plate and the connecting column.

[0010] Specifically, a sealing sleeve is provided on the outer side of the plug bushing, and the through hole passes through the sealing sleeve.

[0011] Specifically, limit slide bars are welded on both sides of the inside of the three-way valve body, and limit slots are provided at both ends of the outer side of the plug bushing.

[0012] Specifically, a rocker is sleeved on the outer side of the hexagonal column.

[0013] Beneficial effects of the utility model:

[0014] (1) The utility model discloses a three-way plug valve for oil pipelines. Oil enters the three-way valve body and flows through the through hole and the three-way liquid tank. A filter is provided in the through hole to filter impurities in the oil, thereby preventing the oil impurities from entering between the plug bushing and the plug, and avoiding wear of the plug.

[0015] (2) In the three-way plug valve for petroleum pipelines described in the utility model, after the plug sleeve is inserted into the three-way valve body, the limit slide is engaged in the limit groove, so that the plug sleeve will not rotate with the plug, and the sealing sleeve can improve the sealing between the plug sleeve and the three-way valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is the structural explosion diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the plug bushing structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the plug structure of the utility model;

[0021] In the figure: 1. three-way valve body; 2. plug bushing; 201. sealing sleeve; 202. through hole; 203. filter screen; 204. limit slot; 3. plug; 301. three-way liquid tank; 302. connecting column; 303. hexagonal column; 4. cover plate; 5. sealing ring; 6. rocker; 7. limit slide bar. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Install a filter in the through hole on the plug bushing to prevent impurities in the oil from entering between the plug bushing and the plug, thus avoiding wear of the plug. Figure 1-4As shown, the three-way plug valve for petroleum pipelines described in the utility model comprises a three-way valve body 1, a plug bushing 2 is arranged inside the three-way valve body 1, through holes 202 are equidistantly opened on the outer surface of the plug bushing 2, and a filter screen 203 is fixed inside the through hole 202 by bolts;

[0024] The cock bushing 2 is provided with a cock 3 inside, and three liquid grooves 301 are evenly spaced through the cock 3. A connecting column 302 is provided at the top of the cock 3, and a hexagonal column 303 is sleeved on the top of the connecting column 302.

[0025] When in use, petroleum enters the three-way valve body 1 and flows through the through hole 202 and the three-way liquid tank 301. A filter screen 203 is provided in the through hole 202 to filter impurities in the petroleum, prevent the petroleum impurities from entering between the plug bushing 2 and the plug 3, and avoid wear of the plug 3.

[0026] For example, Figure 1 As shown, the utility model also includes that the outer side of the connecting column 302 located at the top of the three-way valve body 1 is sleeved with a cover plate 4, and the cover plate 4 is fixed to the top of the three-way valve body 1 by bolts.

[0027] When in use, the cover plate 4 covers the three-way valve body 1 to seal it.

[0028] For example, Figure 2 As shown, the utility model further includes that a sealing ring 5 is sleeved between the cover plate 4 and the connecting column 302 .

[0029] When in use, the sealing ring 5 performs sealing between the cover plate 4 and the connecting column 302 .

[0030] For example, Figure 3 As shown, the utility model further includes that a sealing sleeve 201 is sleeved on the outer side of the cock bushing 2 , and the through hole 202 passes through the sealing sleeve 201 .

[0031] When in use, the sealing sleeve 201 can improve the sealing between the plug bushing 2 and the three-way valve body 1.

[0032] For example, Figure 2 , Figure 3 As shown, the utility model also includes that limiting slide bars 7 are welded on both sides of the inside of the three-way valve body 1, and limiting grooves 204 are provided at both ends of the outer side of the plug bushing 2.

[0033] When in use, the second limiting slide bar 7 of the limiting slot 204 can limit the cock bushing 2 to prevent it from rotating with the cock 3.

[0034] For example, Figure 2As shown, the utility model also includes that a rocker 6 is sleeved on the outer side of the hexagonal column 303 .

[0035] When in use, the setting of the rocker 6 makes it convenient for personnel to turn the cock 3.

[0036] When the utility model is used, the plug bushing 2 is inserted into the three-way valve body 1, and the limit slide bar 7 is engaged in the limit slot 204, so that the plug bushing 2 will not rotate with the plug 3, and then the plug 3 is inserted into the plug bushing 2, the sealing ring 5 and the cover plate 4 are sequentially sleeved on the outside of the connecting column 302, and the cover plate 4 is fixed to the three-way valve body 1 with bolts, and the rocker 6 is sleeved on the outside of the hexagonal column 303, so that a complete three-way plug valve can be formed;

[0037] Holding the rocker 6, the plug 3 can be rotated through the connecting column 302, and the oil enters the three-way valve body 1 and flows through the through hole 202 and the three-way liquid tank 301. A filter screen 203 is arranged in the through hole 202 to filter impurities in the oil and prevent the oil impurities from entering between the plug bushing 2 and the plug 3 to avoid wear of the plug 3. The sealing sleeve 201 can improve the sealing between the plug bushing 2 and the three-way valve body 1. The cover plate 4 is covered on the three-way valve body 1 to seal the three-way valve body 1, and the sealing ring 5 is sealed between the cover plate 4 and the hexagonal column 303.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A three-way plug valve for petroleum pipeline, characterized in that: It comprises a three-way valve body (1), a cock bushing (2) is arranged inside the three-way valve body (1), through holes (202) are equidistantly formed on the outer surface of the cock bushing (2), and a filter screen (203) is fixed inside the through hole (202) by bolts; A cock (3) is arranged inside the cock bushing (2), three liquid grooves (301) are equidistantly penetrated inside the cock (3), a connecting column (302) is arranged at the top end of the cock (3), and a hexagonal column (303) is sleeved on the top end of the connecting column (302).

2. A three-way plug valve for petroleum pipeline according to claim 1, characterized in that: The connecting column (302) is located on the top of the three-way valve body (1) and is sleeved with a cover plate (4) on its outer side. The cover plate (4) is fixed to the top of the three-way valve body (1) by bolts.

3. A three-way plug valve for petroleum pipeline according to claim 2, characterized in that: A sealing ring (5) is sleeved between the cover plate (4) and the connecting column (302).

4. A three-way plug valve for petroleum pipeline according to claim 1, characterized in that: A sealing sleeve (201) is sleeved on the outer side of the cock bushing (2), and the through hole (202) passes through the sealing sleeve (201).

5. The three-way plug valve for petroleum pipeline according to claim 1, characterized in that: Limiting slide bars (7) are welded on both sides of the interior of the three-way valve body (1), and limiting slots (204) are provided on both ends of the exterior of the plug bushing (2).

6. A three-way plug valve for petroleum pipeline according to claim 1, characterized in that: A rocker (6) is sleeved on the outer side of the hexagonal column (303).

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