CN213745009U - Valve body for petroleum pipeline - Google Patents
Valve body for petroleum pipeline Download PDFInfo
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- CN213745009U CN213745009U CN202022782130.9U CN202022782130U CN213745009U CN 213745009 U CN213745009 U CN 213745009U CN 202022782130 U CN202022782130 U CN 202022782130U CN 213745009 U CN213745009 U CN 213745009U
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Abstract
The utility model relates to a valve body for petroleum pipeline, which comprises a valve body, wherein the valve body comprises a valve casing, two ends of the valve casing along the horizontal direction are respectively provided with an oil inlet for petroleum to enter and an oil outlet for petroleum to flow out, the valve casing comprises an upper casing and a lower casing, the upper casing is positioned above the oil inlet and the oil outlet, and the lower casing is positioned below the oil inlet and the oil outlet; a valve plug used for adjusting the oil flow is arranged in the valve shell; the upper shell is provided with an upper cavity for the valve plug to move up and down in the upper shell along the vertical direction, and the lower shell is provided with a lower cavity for the valve plug to move up and down in the lower shell along the vertical direction; the valve plug is run through the valve plug along the horizontal direction and is offered the logical oil groove that supplies the oil to pass through, and the valve plug includes stopper and lower stopper, goes up the stopper and is located the top of leading to the oil groove, and lower stopper is located the below of leading to the oil groove, goes up the stopper and slides from top to bottom in the epicoele is internal, and lower stopper slides from top to bottom in cavity down. The utility model discloses the effect that improves the valve body leakproofness has.
Description
Technical Field
The utility model belongs to the technical field of the technique of valve body and specifically relates to a valve body for petroleum pipeline is related to.
Background
Petroleum is black gold and blood in modern industry, is a non-renewable commodity and is an indispensable strategic resource for national survival and development. At present, most of petroleum is transported by pipelines, and petroleum crude oil is usually corrosive due to complex internal components.
The traditional Chinese patent with the publication number of CN208503529U discloses a high-pressure throttle valve for petroleum transportation, which comprises an upper throttle valve main body, a lower throttle valve main body and a positioning ferrule, wherein a runner is arranged at the upper end of the upper throttle valve main body, a threaded rod is arranged at the lower end of the runner, the positioning ferrule is arranged on the outer side of the threaded rod, a rubber gasket is arranged on the inner side of the positioning ferrule, a connecting rod is arranged on one side of the rubber gasket, one end of the connecting rod is provided with a supporting block, a rotating rod is arranged on one side of the supporting block, a spring is arranged on one side of the positioning ferrule, a nut is arranged inside the upper throttle valve main body, a valve rod is arranged at the lower end of the nut, a sealing ring is arranged on the surface of the valve rod, and a sealing packing layer is arranged at the lower end of the sealing ring. Runner, threaded rod, valve rod and valve plug fixed connection in proper order, the conical setting of crew cut through the valve plug, the height of adjustment valve plug can adjust the size of the regulating current volume promptly.
The above prior art solutions have the following drawbacks: above-mentioned high pressure choke valve is through adjusting the high oil flow of adjusting of valve plug, and the valve plug can reciprocate in the valve pocket at the in-process of adjusting flow, and the valve plug can rub with the inboard wall of valve body at the in-process that reciprocates. Because valve body and valve plug all are the metal material, can produce the clearance between permanent friction in-process valve plug and the valve body to lead to the leakproofness of valve body to reduce, leak oil easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a valve body for petroleum pipeline, it has the advantage that improves the valve body leakproofness.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a valve body for petroleum pipeline, includes the valve body, its characterized in that: the valve body comprises a valve shell, wherein an oil inlet for oil to enter and an oil outlet for oil to flow out are respectively formed in two ends of the valve shell along the horizontal direction, the valve shell comprises an upper shell and a lower shell, the upper shell is positioned above the oil inlet and the oil outlet, and the lower shell is positioned below the oil inlet and the oil outlet; a valve plug used for adjusting the oil flow is arranged in the valve shell; the upper shell is provided with an upper cavity along the vertical direction for the valve plug to move up and down in the upper shell, and the lower shell is provided with a lower cavity along the vertical direction for the valve plug to move up and down in the lower shell; an oil through groove for oil to pass through is formed in the valve plug in a penetrating mode in the horizontal direction, the valve plug comprises an upper plug and a lower plug, the upper plug is located above the oil through groove, the lower plug is located below the oil through groove, the upper plug slides up and down in the upper cavity body, and the lower plug slides up and down in the lower cavity body;
the upper end of the upper plug is fixedly connected with an upper blocking plate, the upper blocking plate is positioned on the end face of the upper plug along the flow direction of petroleum, an upper groove is formed in the upper shell and the upper blocking plate correspondingly, the upper groove extends downwards along the vertical direction, and the end face, far away from the upper plug, of the upper blocking plate is in contact with the bottom wall of the upper groove; the upper end of the lower plug is fixedly connected with a lower blocking plate, the lower blocking plate is positioned on the end face of the lower plug along the flow direction of petroleum, the lower shell and the lower blocking plate are correspondingly provided with lower grooves, the lower grooves extend downwards along the vertical direction, and the end face, far away from the lower plug, of the lower blocking plate is in contact with the bottom wall of the lower grooves; the length of the upper blocking plate and the length of the lower blocking plate in the direction vertical to the oil flow direction in the horizontal direction are larger than or equal to the diameter of the oil inlet.
By adopting the technical scheme, the oil through groove can be communicated with the oil inlet and the oil outlet after being arranged, so that oil can pass through; when need not lead to oil, only need will lead to the oil groove and stagger with oil inlet and oil-out, can reduce like this and carry out the distance that reciprocates with the valve plug, and then reduce the friction of casing and valve plug down, guarantee the leakproofness of valve body. The end face of the upper stopper is far away from by the upper stop plate after the upper stop plate and the lower stop plate are arranged is contacted with the bottom wall of the upper groove, the end face of the lower stopper is far away from by the lower stop plate is contacted with the bottom wall of the lower groove, the upper stop plate is located at the upper end of the upper stopper, the lower stop plate is located at the upper end of the lower stopper, the upper stop plate and the lower stop plate can play a role in stopping oil in the horizontal direction, even if the upper stop plate and the bottom wall of the upper groove are in permanent contact friction, the lower stop plate and the bottom wall of the lower groove are in permanent contact friction, the upper stop plate is located in the upper groove, the lower stop plate is located in the lower groove, the flowing direction of leaked oil can be stopped, and the sealing performance of the valve body is improved.
The present invention may be further configured in a preferred embodiment as: an upper holding groove is formed in the end face, close to the upper blocking plate, of the upper plug, an upper spring is fixedly connected to the bottom of the upper holding groove, one end, far away from the bottom of the upper holding groove, of the upper spring is fixedly connected with the upper blocking plate, and the area, close to the end face of the upper spring, of the upper blocking plate is smaller than or equal to the area of a notch of the upper holding groove; the lower stopper has seted up down the holding tank on being close to the terminal surface of holding plate down, the tank bottom fixedly connected with of holding tank down the spring, the tank bottom one end and the lower holding plate fixed connection of holding tank are kept away from down to the spring, the area that the holding plate is close to the terminal surface of spring down is less than or equal to the area of the notch of holding tank down.
Through adopting above-mentioned technical scheme, after upper spring and lower spring set up, even the terminal surface that the upper stop plate is close to the upper groove and the terminal surface that the lower stop plate is close to the low groove are a bit of friction down, lead to between upper stop plate and the upper groove and stop down and produce the clearance between plate and the low groove, also can be by the upper spring with the upper stop plate bullet to contact with the diapire of upper groove or stop the plate bullet down and contact with the diapire of low groove by the lower spring down with the upper stop plate, guarantee the leakproofness.
The present invention may be further configured in a preferred embodiment as: an upper limiting ring is fixedly connected to the notch of the upper accommodating groove along the circumferential direction of the notch of the upper accommodating groove, the upper blocking plate comprises an upper connecting part and an upper blocking part, one end of the upper blocking part is fixedly connected with the upper spring, the other end of the upper blocking part is fixedly connected with the upper connecting part, the upper blocking part is positioned in the upper accommodating groove, the area of the end surface, close to the upper connecting part, of the upper blocking part is larger than the area enclosed by the inner side wall of the upper limiting ring, and the area of the end surface, close to the upper blocking part, of the upper connecting part is smaller than or equal to the area enclosed by the inner side wall of the upper limiting ring; the notch department of holding tank is along the circumference fixedly connected with lower retaining ring of the notch of holding tank down, the barrier plate includes connecting portion and lower barrier part down, the one end and the lower spring fixed connection of lower barrier part, the other end and the lower connecting portion fixed connection of lower barrier part, lower barrier part is located holding tank down, the terminal surface area that lower barrier part is close to lower connecting portion is greater than the area that the inside wall of lower barrier ring encloses, the area that lower connecting portion is close to the terminal surface of lower barrier part is less than or equal to the area that the inside wall of lower barrier ring encloses.
Through adopting above-mentioned technical scheme, go up spacing ring and spacing ring setting back down, can prevent that the upper barrier plate from breaking away from the holding tank completely, prevent that the holding tank under the barrier plate breaks away from completely down, further guarantee the leakproofness of valve body.
The present invention may be further configured in a preferred embodiment as: an upper roller groove is formed in the end face, close to the upper groove, of the upper blocking plate, an upper roller is arranged in the upper roller groove along the horizontal direction, and the outer side wall of the upper roller is in contact with the groove bottom of the upper groove; the end surface of the lower stop plate close to the lower groove is provided with a lower roller groove, a lower roller is arranged in the lower roller groove along the horizontal direction, and the outer side wall of the lower roller is contacted with the groove bottom of the lower groove; the length of the upper roller and the length of the lower roller in the direction vertical to the oil flow direction in the horizontal direction are larger than or equal to the diameter of the oil inlet.
Through adopting above-mentioned technical scheme, the tank bottom through top roller and upper groove contacts, and the tank bottom through below roller and low groove contacts, can become rolling friction with sliding friction, and then prevents to lead to the leakproofness decline of valve body under the permanent friction.
The present invention may be further configured in a preferred embodiment as: and the bottom walls of the upper grooves and the lower grooves are coated with first anti-friction layers.
Through adopting above-mentioned technical scheme, first antifriction layer sets up the back, can prevent between upper groove and the last barrier plate and the production of friction between lower groove and the lower barrier plate, and then guarantees the leakproofness of valve body.
The present invention may be further configured in a preferred embodiment as: the length of the lower end of the lower plug in the oil flow direction is smaller than that of the upper end of the lower plug in the oil flow direction.
Through adopting above-mentioned technical scheme, the lower end of lower stopper is less than the upper end of lower stopper along the ascending length in oil flow direction and can further reduce the friction of lower stopper and the inner wall of cavity down.
The present invention may be further configured in a preferred embodiment as: the length of the upper end of the upper plug in the oil flow direction is smaller than that of the lower end of the upper plug in the oil flow direction.
Through adopting above-mentioned technical scheme, the length that the upper end of going up the stopper is less than the length that the lower extreme of going up the stopper went up along the oil flow and can further reduce the friction of going up the stopper and the inner wall of last cavity along the ascending length of oil flow.
The present invention may be further configured in a preferred embodiment as: and the inner walls of the upper cavity and the lower cavity are coated with second anti-friction layers.
Through adopting above-mentioned technical scheme, the second antifriction layer can prevent the friction of valve plug and last cavity and lower cavity inner wall.
To sum up, the utility model discloses a following at least one useful technological effect:
after the upper shell, the lower shell, the valve plug, the upper cavity, the lower cavity, the upper barrier plate and the lower barrier plate are arranged, the sealing performance of the valve body can be ensured;
through the setting of first antifriction layer and second antifriction layer, can reduce between valve plug and last cavity and the lower cavity, reduce between upper groove and the last barrier plate, friction between low groove and the lower barrier plate, and then guarantee the leakproofness of valve body.
Drawings
FIG. 1 is a schematic view of the overall structure of a valve body for a petroleum pipeline according to the embodiment;
FIG. 2 is a cross-sectional view of a valve body for a petroleum pipeline shown in this embodiment;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is an enlarged view of a portion B in fig. 2.
In the figure, 1, a valve body; 11. a valve housing; 12. an oil inlet; 13. an oil outlet; 14. an upper housing; 141. an upper groove; 15. a lower housing; 151. a lower groove; 16. an upper cavity; 17. a lower cavity; 18. a bearing plate; 191. a threaded rod; 192. a bearing; 2. a valve plug; 21. an oil groove is communicated; 22. plugging; 221. an upper barrier plate; 222. an upper accommodating groove; 223. an upper limiting ring; 224. an upper spring; 225. an upper connecting portion; 226. an upper barrier portion; 228. an upper roller; 23. plugging; 231. a lower barrier plate; 232. a lower accommodating groove; 233. a lower limit ring; 234. a lower spring; 235. a lower connecting portion; 236. a lower barrier; 238. a lower roller; 3. a first anti-friction layer; 4. a second anti-friction layer; 5. the handle is rotated.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a valve body for petroleum pipeline, including valve body 1, valve body 1 includes valve casing 11, and valve casing 11 sets up the oil-out 13 that supplies oil inlet 12 that the oil got into and supplies the oil to flow out respectively along the both ends of horizontal direction, and valve casing 11 includes casing 14 and casing 15 down, goes up casing 14 and is located the top of oil inlet 12 and oil-out 13, and casing 15 is located the below of oil inlet 12 and oil-out 13 down.
Referring to fig. 2, a valve plug 2 for adjusting the oil flow is arranged in the valve housing 11, an upper cavity 16 for the valve plug 2 to move up and down in the upper housing 14 is arranged along the vertical direction in the upper housing 14, and a lower cavity 17 for the valve plug 2 to move up and down in the lower housing 15 is arranged along the vertical direction in the lower housing 15. Specifically, the top end of the upper housing 14 is fixedly connected with a receiving plate 18, a hole (not shown in the figure) penetrating through the receiving plate 18 and the upper housing 14 is formed in the receiving plate 18 along the vertical direction, a threaded rod 191 is connected to the hole through internal threads, the top end of the threaded rod 191 is fixedly connected with a rotating handle 5, and the bottom end of the threaded rod 191 is connected with the valve plug 2 through a bearing 192.
Referring to fig. 2, an oil passing groove 21 for passing oil is formed in the valve plug 2 along the horizontal direction and penetrates through the valve plug 2, the valve plug 2 comprises an upper plug 22 and a lower plug 23, the upper plug 22 is located above the oil passing groove 21, the lower plug 23 is located below the oil passing groove 21, the upper plug 22 slides up and down in the upper cavity 16, and the lower plug 23 slides up and down in the lower cavity 17. The length of the upper end of the upper plug 22 in the oil flow direction is smaller than the length of the lower end of the upper plug 22 in the oil flow direction; the length of the lower end of the lower plug 23 in the oil flow direction is smaller than the length of the upper end of the lower plug 23 in the oil flow direction.
Referring to fig. 2 and 3, the upper end of the upper plug 22 is fixedly connected with two upper blocking plates 221, and the two upper blocking plates 221 are respectively located on two end faces of the upper plug 22 along the oil flow direction. Specifically, an upper receiving groove 222 is formed in the end surface of the upper plug 22 close to the upper blocking plate 221, and an upper limiting ring 223 is fixedly connected to the notch of the upper receiving groove 222 along the circumferential direction of the notch of the upper receiving groove 222. The three upper springs 224 are fixedly connected to the bottom of the upper receiving groove 222 along the length direction of the upper receiving groove 222, the upper blocking plate 221 includes an upper connecting portion 225 and an upper blocking portion 226, one end of the upper blocking portion 226 is fixedly connected to one end of the upper spring 224 far away from the bottom of the upper receiving groove 222, and the other end of the upper blocking portion 226 is fixedly connected to the upper connecting portion 225.
Referring to fig. 2 and 3, the upper stopper 226 is located in the upper receiving groove 222, an area of an end surface of the upper stopper 226 adjacent to the upper connecting portion 225 is larger than an area surrounded by inner side walls of the upper limiting ring 223, an area of an end surface of the upper stopper 226 adjacent to the upper spring 224 is equal to an area of a notch of the upper receiving groove 222, and an area of an end surface of the upper connecting portion 225 adjacent to the upper stopper 226 is equal to an area surrounded by inner side walls of the upper limiting ring 223. The length of the upper connecting portion 225 in the direction perpendicular to the oil flow direction in the horizontal direction is slightly larger than the diameter of the oil inlet 12, so that when the oil through groove 21 is not communicated with the oil inlet 12, i.e., the valve body 1 is closed, the upper connecting portion 225 can block the oil of the oil inlet 12 from flowing into the upper cavity 16 or the lower cavity 17.
Referring to fig. 2 and 3, the upper housing 14 and the upper blocking plate 221 are correspondingly provided with an upper groove 141, the upper groove 141 extends downward along the vertical direction, and an end surface of the upper connecting portion 225 away from the upper plug 22 contacts with a bottom wall of the upper groove 141. Specifically, an upper roller groove (not shown) is formed in an end surface of the upper barrier plate 221, which is close to the upper groove 141, an upper roller 228 is horizontally disposed in the upper roller groove, and an outer side wall of the upper roller 228 contacts with a groove bottom of the upper groove 141. When the outer side wall of the upper roller 228 is in contact with the groove bottom of the upper groove 141, the upper spring 224 is in a compressed state, and the length of the upper roller 228 in the direction vertical to the oil flow direction in the horizontal direction is slightly larger than the diameter of the oil inlet 12, so that the oil leakage situation is reduced.
Referring to fig. 2 and 4, the upper end of the lower plug 23 is fixedly connected with two lower blocking plates 231, and the two lower blocking plates 231 are respectively located on two end surfaces of the lower plug 23 along the oil flow direction. Specifically, the lower accommodating groove 232 is formed in the end face, close to the lower blocking plate 231, of the lower plug 23, and the lower limiting ring 233 is fixedly connected to the notch of the lower accommodating groove 232 in the circumferential direction. The bottom of the lower accommodating groove 232 is fixedly connected with three lower springs 234 along the length direction of the lower accommodating groove 232, the lower blocking plate 231 comprises a lower connecting portion 235 and a lower blocking portion 236, one end of the lower blocking portion 236 is fixedly connected with one end of the lower spring 234 far away from the bottom of the lower accommodating groove 232, and the other end of the lower blocking portion 236 is fixedly connected with the lower connecting portion 235.
Referring to fig. 2 and 4, the lower blocking portion 236 is located in the lower receiving groove 232, an area of an end surface of the lower blocking portion 236 close to the lower connecting portion 235 is larger than an area surrounded by inner side walls of the lower retainer ring 233, an area of an end surface of the lower blocking portion 236 close to the lower spring 234 is equal to an area of a notch of the lower receiving groove 232, and an area of an end surface of the lower connecting portion 235 close to the upper blocking portion 226 is equal to an area surrounded by inner side walls of the lower retainer ring 233. The length of the lower connecting portion 235 in the direction perpendicular to the oil flow direction in the horizontal direction is slightly larger than the diameter of the oil inlet 12, so that when the oil through groove 21 is not communicated with the oil inlet 12, i.e., the valve body 1 is closed, the lower connecting portion 235 can block the oil of the oil inlet 12 from flowing into the upper cavity 16 or the lower cavity 17.
Referring to fig. 2 and 4, the lower housing 15 and the lower blocking plate 231 are respectively provided with a lower groove 151, the lower groove 151 extends downwards along the vertical direction, and the end surface of the lower connecting portion 235 far away from the lower plug 23 is in contact with the bottom wall of the lower groove 151. Specifically, the end surface of the lower blocking plate 231 close to the lower groove 151 is provided with a lower roller groove (not shown), a lower roller 238 is horizontally arranged in the lower roller groove, and the outer side wall of the lower roller 238 is in contact with the groove bottom of the lower groove 151. When the outer side wall of the lower roller 238 is in contact with the groove bottom of the lower groove 151, the lower spring 234 is in a compressed state, and the length of the lower roller 238 in the horizontal direction perpendicular to the oil flow direction is slightly greater than the diameter of the oil inlet 12, so as to reduce the occurrence of oil leakage.
Referring to fig. 2 and 4, the first anti-friction layer 3 is coated on the bottom wall of the upper groove 141 and the bottom wall of the lower groove 151, and the second anti-friction layer 4 is coated on the inner walls of the upper chamber 16 and the lower chamber 17. Specifically, the first anti-friction layer 3 and the second anti-friction layer 4 are both polytetrafluoroethylene coatings.
The implementation principle of the above embodiment is as follows:
when in use, in the process that oil flows from the oil inlet 12 to the valve body 1 and flows out from the oil outlet 13, the oil groove 21 is communicated with the oil inlet 12 and the oil outlet 13. If the valve body 1 needs to be closed, the rotating handle 5 needs to be rotated, the valve plug 2 moves downwards under the rotation of the threaded rod 191 until the oil through groove 21 is far away from the oil inlet 12 and the oil outlet 13, at this time, the end surface of the upper connecting portion 225 far away from the upper blocking portion 226 contacts with the bottom wall of the upper groove 141, the end surface of the lower connecting portion 235 far away from the lower blocking portion 236 contacts with the bottom wall of the lower groove 151, a blocking effect is achieved on oil, and the sealing performance of the valve body 1 is guaranteed.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a valve body for petroleum pipeline, includes valve body (1), its characterized in that: the valve body (1) comprises a valve casing (11), an oil inlet (12) for oil to enter and an oil outlet (13) for oil to flow out are respectively formed in two ends of the valve casing (11) in the horizontal direction, the valve casing (11) comprises an upper casing (14) and a lower casing (15), the upper casing (14) is located above the oil inlet (12) and the oil outlet (13), and the lower casing (15) is located below the oil inlet (12) and the oil outlet (13); a valve plug (2) for adjusting the oil flow is arranged in the valve shell (11); the upper shell (14) is provided with an upper cavity (16) along the vertical direction, and the valve plug (2) can move up and down in the upper shell (14), and the lower shell (15) is provided with a lower cavity (17) along the vertical direction, and the valve plug (2) can move up and down in the lower shell (15); an oil through groove (21) for oil to pass through is formed in the valve plug (2) along the horizontal direction in a penetrating mode, the valve plug (2) comprises an upper plug (22) and a lower plug (23), the upper plug (22) is located above the oil through groove (21), the lower plug (23) is located below the oil through groove (21), the upper plug (22) slides up and down in the upper cavity (16), and the lower plug (23) slides up and down in the lower cavity (17);
the upper end of the upper plug (22) is fixedly connected with an upper blocking plate (221), the upper blocking plate (221) is located on the end face of the upper plug (22) along the flow direction of oil, an upper groove (141) is correspondingly formed in the upper shell (14) and the upper blocking plate (221), the upper groove (141) extends downwards along the vertical direction, and the end face, far away from the upper plug (22), of the upper blocking plate (221) is in contact with the bottom wall of the upper groove (141); the upper end of the lower plug (23) is fixedly connected with a lower stop plate (231), the lower stop plate (231) is positioned on the end face of the lower plug (23) along the flow direction of oil, the lower shell (15) and the lower stop plate (231) are correspondingly provided with lower grooves (151), the lower grooves (151) extend downwards along the vertical direction, and the end face, far away from the lower plug (23), of the lower stop plate (231) is contacted with the bottom wall of the lower grooves (151); the length of the upper blocking plate (221) and the lower blocking plate (231) along the direction vertical to the oil flow direction in the horizontal direction is larger than or equal to the diameter of the oil inlet (12).
2. The valve body for a petroleum pipeline of claim 1, wherein: an upper accommodating groove (222) is formed in the end face, close to the upper blocking plate (221), of the upper plug (22), an upper spring (224) is fixedly connected to the bottom of the upper accommodating groove (222), one end, far away from the bottom of the upper accommodating groove (222), of the upper spring (224) is fixedly connected with the upper blocking plate (221), and the area, close to the end face of the upper spring (224), of the upper blocking plate (221) is smaller than or equal to the area of a notch of the upper accommodating groove (222); lower holding tank (232) have been seted up on lower stopper (23) is close to the terminal surface of holding plate (231) down, spring (234) under the tank bottom fixedly connected with of holding tank (232) down, the tank bottom one end and lower holding plate (231) fixed connection of holding tank (232) are kept away from down spring (234), the area that holding plate (231) are close to the terminal surface of spring (234) down is less than or equal to the area of the notch of holding tank (232) down.
3. The valve body for a petroleum pipeline of claim 2, wherein: an upper limiting ring (223) is fixedly connected to the notch of the upper accommodating groove (222) along the circumferential direction of the notch of the upper accommodating groove (222), the upper blocking plate (221) comprises an upper connecting portion (225) and an upper blocking portion (226), one end of the upper blocking portion (226) is fixedly connected with an upper spring (224), the other end of the upper blocking portion (226) is fixedly connected with the upper connecting portion (225), the upper blocking portion (226) is located in the upper accommodating groove (222), the area of the end face, close to the upper connecting portion (225), of the upper blocking portion (226) is larger than the area enclosed by the inner side wall of the upper limiting ring (223), and the area of the end face, close to the upper blocking portion (226), of the upper connecting portion (225) is smaller than or equal to the area enclosed by the inner side wall of the upper limiting ring (223); the notch department of lower holding tank (232) is along the circumference fixedly connected with lower retainer ring (233) of the notch of lower holding tank (232), lower barrier plate (231) is including lower connecting portion (235) and lower holding portion (236), the one end and the lower spring (234) fixed connection of lower holding portion (236), the other end and the lower connecting portion (235) fixed connection of lower holding portion (236), lower holding portion (236) are located lower holding tank (232), the terminal surface area that lower holding portion (236) is close to lower connecting portion (235) is greater than the area that the inside wall of lower retainer ring (233) encloses, the area that lower connecting portion (235) is close to the terminal surface of lower holding portion (236) is less than or equal to the area that the inside wall of lower retainer ring (233) encloses.
4. The valve body for a petroleum pipeline of claim 1, wherein: an upper roller groove is formed in the end face, close to the upper groove (141), of the upper blocking plate (221), an upper roller (228) is arranged in the upper roller groove along the horizontal direction, and the outer side wall of the upper roller (228) is in contact with the groove bottom of the upper groove (141); a lower roller groove is formed in the end face, close to the lower groove (151), of the lower blocking plate (231), a lower roller (238) is arranged in the lower roller groove along the horizontal direction, and the outer side wall of the lower roller (238) is in contact with the groove bottom of the lower groove (151); the length of the upper roller (228) and the lower roller (238) along the direction vertical to the oil flow direction in the horizontal direction is larger than or equal to the diameter of the oil inlet (12).
5. The valve body for a petroleum pipeline of claim 1, wherein: the bottom walls of the upper grooves (141) and the bottom walls of the lower grooves (151) are coated with first anti-friction layers (3).
6. The valve body for a petroleum pipeline of claim 1, wherein: the length of the lower end of the lower plug (23) in the oil flow direction is smaller than the length of the upper end of the lower plug (23) in the oil flow direction.
7. The valve body for a petroleum pipeline of claim 1, wherein: the length of the upper end of the upper plug (22) in the oil flow direction is smaller than the length of the lower end of the upper plug (22) in the oil flow direction.
8. The valve body for a petroleum pipeline of claim 1, wherein: and the inner walls of the upper cavity (16) and the lower cavity (17) are coated with second anti-friction layers (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022782130.9U CN213745009U (en) | 2020-11-26 | 2020-11-26 | Valve body for petroleum pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022782130.9U CN213745009U (en) | 2020-11-26 | 2020-11-26 | Valve body for petroleum pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213745009U true CN213745009U (en) | 2021-07-20 |
Family
ID=76830467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022782130.9U Active CN213745009U (en) | 2020-11-26 | 2020-11-26 | Valve body for petroleum pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213745009U (en) |
-
2020
- 2020-11-26 CN CN202022782130.9U patent/CN213745009U/en active Active
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