Anti-leakage safety throttle valve based on oil exploitation and assembling method thereof

Abstract

The invention relates to the technical field of throttle valves, in particular to an anti-leakage safety throttle valve based on oil exploitation and an assembling method thereof, and the anti-leakage safety throttle valve comprises a valve body shell, a valve core, a valve rod and a valve rod, the adjusting screw rod is arranged on the valve body shell, and a plug part matched with the circulation channel is rotationally mounted at the end part of the adjusting screw rod; the buffering structure is arranged in the plug part and used for buffering pressure fluctuation of petroleum, and a locking hole is formed in the buffering structure; the stop triggering structure is arranged on the plug part and the valve body shell, and a locking part matched with the locking hole is formed on the stop triggering structure; when the plug part moves to be attached to the circulation channel, the stop triggering structure acts, so that the locking part can be separated from the locking hole, the buffering effect is improved, and safety is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of throttle valves, in particular to an anti-leakage safety throttle valve based on petroleum exploitation and an assembling method thereof. Background Art

[0002] The throttle valve's precise flow control capability helps optimize mining efficiency, reduce energy consumption, and improve resource utilization, and is widely used in oil production.

[0003] At the moment the throttle valve is closed, the oil still tends to flow, resulting in a water hammer effect, which impacts the throttle valve and pipeline seals, affecting the stable transportation of oil. For this reason, a water hammer eliminator is generally installed in existing throttle valves.

[0004] Although the above-mentioned water hammer arrester can also eliminate shock when the throttle valve is open, the oil pressure will also act on the water hammer arrester during the throttle valve closing process, causing the water hammer arrester's buffering effect to be consumed to a certain extent, resulting in a decrease in the water hammer arrester's shock absorption effect at the moment the throttle valve is closed. Summary of the Invention

[0005] The object of the present invention is to provide a leakage-proof safety throttle valve based on petroleum extraction and an assembly method thereof, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: Anti-leakage safety throttle valve based on oil production, including: a valve body shell, wherein a flow channel is formed in the valve body shell; an adjusting screw, which is arranged on the valve body housing, and a plug portion adapted to the flow channel is rotatably mounted on the end of the adjusting screw; a buffer structure, disposed in the plug portion, for buffering the pressure fluctuation of the oil, wherein the buffer structure is provided with a locking hole; A stop trigger structure is provided on the plug portion and the valve body housing, and a locking portion adapted to fit the locking hole is formed on the stop trigger structure; When the plug moves to fit into the flow channel, the stopper triggers the structure to enable the locking portion to separate from the locking hole.

[0007] As a further embodiment of the present invention, the buffer structure includes a cavity structure disposed within the plug portion, a pressure-bearing plate being sealingly and slidably mounted within the cavity structure, a plurality of couplings being equidistantly arranged on the pressure-bearing plate, the couplings being connected to the inner wall of the cavity structure via a first cylindrical spring; The locking hole is arranged at an end of the coupling away from the pressure plate.

[0008] As a further embodiment of the present invention, the stop trigger structure includes a hysteresis cavity communicated with the cavity structure, a locking pin is slidably mounted in the hysteresis cavity, one end of the locking pin is formed with the locking portion, and the other end is connected to the inner wall of the hysteresis cavity via a second cylindrical spring; The stop triggering structure further includes a pulling kit for driving the locking pin to move relative to the coupling shaft.

[0009] As a further solution of the present invention: the locking portion is provided with a flat surface and an inclined guide surface at one end facing the locking hole. When the flat surface abuts against the side wall of the locking hole, the pressure plate can be locked. When the coupling acts on the inclined guide surface, the locking pin can move toward the retardation chamber.

[0010] As a further embodiment of the present invention, the pulling assembly includes an inclined groove provided on the locking pin and a pull rod slidably provided through the plug portion, the pull rod being L-shaped and extending into the retardation cavity, and a protruding shaft provided at one end of the pull rod being able to slide in the inclined groove; The pulling kit further includes a stop ring provided on the valve body housing, and the stop ring is in abutment with the pull rod.

[0011] As a further solution of the present invention: it also includes: A sealing member is provided on the circulation channel, wherein an annular cavity is provided inside the sealing member, and the annular cavity is connected to a suction device provided outside the valve body shell through a conduit.

[0012] As a further solution of the present invention: a second annular groove is provided on the side wall of the circulation channel, and the sealing member is placed in the second annular groove; The plug portion is provided with a first annular groove, into which the sealing member can extend when expanded.

[0013] As a further solution of the present invention: a curved portion is provided on the upper side wall of the annular cavity, and when the annular cavity is filled with compressed gas, the curved portion can bend and deform.

[0014] The assembly method of the anti-leakage safety throttle valve based on petroleum production comprises: First, install the seal on the valve body shell, then install the plug on the adjusting screw, place the seal on the valve body shell, then place the end cover connected to the adjusting bolt on the valve body shell, align the corresponding threaded holes, tighten with bolts, and finally install the suction device and connect it to the seal to complete the assembly.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the adjusting screw is controlled to drive the plug to move toward the circulation channel, the pressure plate can be locked, and before the circulation channel is closed, the pressure plate will not move relative to the plug due to the oil pressure. As a result, at the moment the circulation channel is closed, the first cylindrical spring has been compressed to a certain extent, thereby reducing the buffering effect of the impact force generated by the "water hammer effect" at the moment the circulation channel is closed. When the plug is tightly fitted with the circulation channel, the pressure plate can be released again, so that the elastic force provided by the first cylindrical spring is used to buffer the impact force, effectively avoiding the reduction of the sealing effect due to the impact force on the oil pipeline and the plug, reducing the risk of oil leakage, ensuring the safe and stable operation of the oil transportation system, extending the service life of the equipment, and improving the reliability and safety of the entire oil transportation system. The seal can maintain a corresponding state when the plug closes or opens the flow channel by expanding, deforming, and contracting and resetting. On the one hand, this can avoid friction between the seal and the plug that causes wear of the seal. On the other hand, it can ensure the sealing between the plug and the flow channel when the flow channel is closed, thereby preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a structural diagram of an embodiment of a leakage-proof safety throttle valve based on oil extraction.

[0017] Figure 2 The figure is a schematic diagram of the internal structure of the valve body shell in an embodiment of a leakage-proof safety throttle valve based on oil extraction.

[0018] Figure 3 This is a structural schematic diagram of a valve body shell in an embodiment of an anti-leakage safety throttle valve based on oil extraction.

[0019] Figure 4 This is a structural schematic diagram of the plug portion in an embodiment of a leakage-proof safety throttle valve based on oil production.

[0020] Figure 5 This is a schematic diagram of the internal structure of the plug portion in an embodiment of a leakage-proof safety throttle valve based on oil production.

[0021] Figure 6 for Figure 5 A magnified view of the structure at point A in the middle.

[0022] Figure 7 The figure is a schematic structural diagram of a locking pin and a coupling in an embodiment of a leakage-proof safety throttle valve for oil production.

[0023] Figure 8 This is a schematic structural diagram of a seal, a conduit, and a suction device in an embodiment of an anti-leakage safety throttle valve for oil production.

[0024] Figure 9 The figure shows a cross section of a seal in an embodiment of a leakage-proof safety throttle valve for oil production.

[0025] In the figure: 1. valve body shell; 2. adjusting screw; 3. plug; 301. first annular groove; 302. hysteresis chamber; 4. pressure plate; 5. coupling; 501. locking hole; 6. first cylindrical spring; 7. locking pin; 701. inclined groove; 702. inclined guide surface; 8. second cylindrical spring; 9. pull rod; 901. guide groove; 10. cam; 11. stop ring; 12. guide wheel; 13. sealing member; 1301. annular cavity; 1302. bending portion; 14. suction device; 15. conduit; 16. second annular groove. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] See also Figures 1 to 9 In an embodiment of the present invention, an anti-leakage safety throttle valve based on oil extraction includes: a valve body shell 1, an adjusting screw 2, a buffer structure and a stop trigger structure.

[0029] A flow channel is formed in the valve body shell 1; The adjusting screw 2 is arranged on the valve body housing 1 , and a plug 3 adapted to the flow channel is rotatably mounted on the end of the adjusting screw 2 .

[0030] It should be noted that the lower part of the plug 3 adopts a frustum structure, while the upper end of the circulation channel is set in a circular inclined surface. This structural design enables the plug 3 to fit more closely with the circulation channel during the downward movement, and the fitting area of ​​the two is significantly increased. This tight and large-area fit greatly enhances the sealing effect when the two are fitted, effectively preventing oil leakage after the circulation channel is closed, and avoiding problems such as environmental pollution and waste of resources caused by leakage.

[0031] The buffer structure is provided in the plug portion 3 to buffer the pressure fluctuation of the oil, and a locking hole 501 is provided on the buffer structure; The buffer structure includes a cavity structure provided in the plug portion 3, a pressure plate 4 is sealingly and slidably mounted in the cavity structure, and a plurality of couplings 5 ​​are equidistantly arranged on the pressure plate 4 at a circumference thereof, and the couplings 5 ​​are connected to the inner wall of the cavity structure via a first cylindrical spring 6; Specifically, the locking hole 501 is provided at an end of the coupling 5 away from the pressure plate 4 .

[0032] In the initial state, the pressure plate 4 is in a locked state and is tightly connected to the plug 3 to form an integrated structure. When the plug 3 is controlled to move toward the circulation channel, the pressure plate 4 will not move relative to the plug 3 due to the oil pressure. This effectively avoids the oil pressure acting on the pressure plate 4 during the closing of the circulation channel, thereby causing the pressure plate 4 to compress the first cylindrical spring 6. If the first cylindrical spring 6 has been compressed before the circulation channel is closed, its buffering effect will be greatly reduced or even completely fail, which may cause impact, leading to oil leakage and posing a safety hazard.

[0033] However, when the circulation channel is closed, the stop trigger structure is separated from the locking hole 501. At this time, the "water hammer effect" generated in the oil pipeline will act on the pressure plate 4, and the pressure plate 4 can transmit the impact force to the first cylindrical spring 6. With the help of the elastic force of the first cylindrical spring 6, the impact force generated by the "water hammer effect" is buffered. This design avoids the impact force from directly acting on the plug 3 or the oil pipeline, thereby effectively preventing the sealing effect from decreasing, reducing the risk of oil leakage, ensuring the safe and stable operation of the oil transportation system, extending the service life of the equipment, and improving the reliability and safety of the entire oil transportation system.

[0034] See also Figures 2 to 5 The stop trigger structure is provided on the plug 3 and the valve body housing 1. A locking portion adapted to the locking hole 501 is formed on the stop trigger structure. When the plug 3 moves to fit into the flow channel, the stop trigger structure is actuated to separate the locking portion from the locking hole 501. The stop trigger structure includes a hysteresis cavity 302 connected to the cavity structure, and a locking pin 7 is slidably installed in the hysteresis cavity 302. One end of the locking pin 7 is formed with the locking portion, and the other end is connected to the inner wall of the hysteresis cavity 302 through a second cylindrical spring 8.

[0035] In the initial state, the second cylindrical spring 8 is in a natural state. At this time, the locking portion at the end of the locking pin 7 can be inserted into the locking hole 501, thereby locking the pressure plate 4, ensuring that in the process of closing the circulation channel, the pressure plate 4 will not move relative to the plug portion 3 due to the action of pressure, ensuring that at the moment the circulation channel is closed, the first cylindrical spring 6 can effectively buffer the oil pressure.

[0036] At the moment the circulation channel is closed, the locking pin 7 can be pulled to separate the locking portion from the locking hole 501, so that the pressure plate 4 is unlocked, thereby being able to use the elastic force provided by the first cylindrical spring 6 to buffer the impact force.

[0037] The stop trigger structure also includes a pulling kit for driving the locking pin 7 to move relative to the coupling 5. The pulling kit includes an inclined groove 701 arranged on the locking pin 7 and a pull rod 9 slidingly arranged through the plug 3. The pull rod 9 is in an "L"-shaped structure, and the pull rod 9 extends into the retardation cavity 302. The convex shaft 10 arranged at one end of the pull rod 9 can slide in the inclined groove 701. A guide groove 901 is provided on the pull rod 9, and a guide wheel 12 connected to the plug 3 can roll in the guide groove 901. This setting can limit the direction of the pull rod 9 to prevent the pull rod 9 from deflecting due to unbalanced force when the pull rod 9 interacts with the stop ring 11, thereby ensuring the accuracy of the pull rod 9 in controlling the movement of the locking pin 7.

[0038] The pulling kit further includes a stop ring 11 provided on the valve body housing 1 , the stop ring 11 abutting against the pull rod 9 ; Among them, the locking part is provided with a flat surface and an inclined guide surface 702 at one end facing the locking hole 501. When the flat surface abuts against the side wall of the locking hole 501, it can lock the pressure plate 4. When the coupling 5 acts on the inclined guide surface 702, it can make the locking pin 7 move toward the retardation chamber 302.

[0039] In the initial state, the pull rod 9 and the stop ring 11 are in a separated state. When the adjusting screw 2 drives the plug 3 to move toward the circulation channel, when the pull rod 9 abuts against the stop ring 11, the pull rod 9 can move upward relative to the plug 3, and use the cooperation between the convex shaft 10 and the inclined groove 701 to pull the locking pin 7 to move, and when the plug 3 is completely fitted with the circulation channel, the locking pin 7 is separated from the locking hole 501, so that in this state, the pressure plate 4 can be unlocked, thereby buffering the impact force generated by the "water hammer effect".

[0040] When the control plug 3 moves away from the circulation channel, the oil can flow through the circulation channel, so that the oil pressure is released. At this time, the pressure plate 4 can be reset to the initial position, and when it abuts against the inclined guide surface 702, it actively drives the locking pin 7 to move. After the locking part is aligned with the locking hole 501, the locking part can be inserted into the locking hole 501, thereby re-locking the pressure plate 4, so that the impact force can be buffered when the circulation channel is closed next time.

[0041] It should also be noted that the cross-section of the coupling 5 is a T-shaped structure, that is, the end of the coupling 5 connected to the first cylindrical spring 6 is provided with a convex circle with a larger diameter, which can abut against the side wall of the placement space where the first cylindrical spring 6 is placed, so that in the initial state, the coupling 5 can be in a locked state. When the locking part is separated from the locking hole 501, the coupling 5 can move toward the first cylindrical spring 6 under the action of oil pressure. At this time, the locking pin 7 can also be reset, but a predetermined distance is maintained between the coupling 5, so as to prevent the locking part from being worn due to the abutment between the two, and in the process of resetting the coupling 5 and the pressure plate 4, the above-mentioned convex circle can act on the inclined guide surface 702, so that the locking pin 7 can retreat into the hysteresis chamber 302 again, and can enter the locking hole 501 again when the coupling 5 is fully reset.

[0042] Based on the above arrangement, when the adjusting screw 2 is controlled to drive the plug 3 to move toward the circulation channel, the pressure plate 4 can be locked, and before the circulation channel is closed, the pressure plate 4 will not move relative to the plug 3 due to the oil pressure, resulting in that at the moment the circulation channel is closed, the first cylindrical spring 6 has been compressed to a certain extent, thereby reducing the buffering effect of the impact force generated by the "water hammer effect" at the moment the circulation channel is closed. When the plug 3 is tightly fitted with the circulation channel, the pressure plate 4 can be released again, thereby utilizing the elastic force provided by the first cylindrical spring 6 to buffer the impact force, effectively avoiding the reduction of the sealing effect due to the impact force on the oil pipeline and the plug 3, reducing the risk of oil leakage, ensuring the safe and stable operation of the oil transportation system, extending the service life of the equipment, and improving the reliability and safety of the entire oil transportation system.

[0043] See also Figure 2 、 Figures 8 and 9 , based on the anti-leakage safety throttle valve of oil extraction, also includes: A sealing member 13 is provided on the circulation channel, wherein an annular cavity 1301 is provided inside the sealing member 13, and the annular cavity 1301 is connected to a suction device 14 provided outside the valve body housing 1 through a conduit 15; A second annular groove 16 is provided on the side wall of the circulation channel, and the sealing member 13 is placed in the second annular groove 16; The plug portion 3 is provided with a first annular groove 301 , into which the sealing member 13 can extend when expanded; Furthermore, a curved portion 1302 is provided on the upper side wall of the annular cavity 1301 . When the annular cavity 1301 is filled with compressed gas, the curved portion 1302 can bend and deform.

[0044] In this embodiment, in the initial state, the seal 13 is in the second annular groove 16, and the seal 13 is slightly raised outward in a circular shape on one side facing the circulation channel, so that when the seal 13 is tightly fitted with the circulation channel, the seal 13 can produce a certain sealing effect, and when the seal 13 is tightly fitted with the circulation channel, the suction device 14 can input compressed gas into the annular cavity 1301 and cause the seal 13 to be pulled toward the plug portion 3 to expand. During the expansion process, since the bent portion 1302 can be deformed, the upper side of the side of the seal 13 can enter the first annular groove 301 and form an abutment state with the first annular groove 301, thereby avoiding to a certain extent the deformation of the seal 13 caused by the action of oil under pressure, thereby reducing the sealing performance.

[0045] Furthermore, before the plug 3 moves upward to open the flow channel, the seal 13 needs to be depressurized to reduce friction between the plug 3 and the seal 13 and improve the durability of the seal 13 .

[0046] Through the above-mentioned arrangement, the seal 13 can maintain a corresponding state when the plug 3 closes or opens the circulation channel by expanding, deforming, and contracting and resetting. On the one hand, this can avoid friction between the seal 13 and the plug 3 that causes wear of the seal 13. On the other hand, it can ensure the sealing between the plug 3 and the circulation channel when the circulation channel is closed, thereby preventing leakage.

[0047] As an embodiment of the present invention, a method for assembling the anti-leakage safety throttle valve based on petroleum extraction is also proposed, which comprises: First, install the seal 13 on the valve body shell 1, then install the plug 3 on the adjusting screw 2, place the seal on the valve body shell 1, then place the end cover connected to the adjusting bolt on the valve body shell 1, align the corresponding threaded holes, tighten with bolts, and finally install the suction device 14 and connect it to the seal 13 to complete the assembly.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Anti-leakage safety throttle valve based on oil extraction, including: A valve body shell (1), wherein a flow channel is formed in the valve body shell (1); An adjusting screw (2) is arranged on the valve body housing (1), and a plug (3) adapted to the flow channel is rotatably mounted on the end of the adjusting screw (2); It is characterized by further comprising: a buffer structure, disposed in the plug portion (3), for buffering the pressure fluctuation of the oil, wherein a locking hole (501) is provided on the buffer structure; A stop trigger structure is provided on the plug portion (3) and the valve body housing (1), and a locking portion adapted to fit the locking hole (501) is formed on the stop trigger structure; When the plug portion (3) moves to fit into the circulation channel, the stop triggering structure moves, allowing the locking portion to separate from the locking hole (501).

2. The anti-leakage safety throttle valve based on petroleum extraction according to claim 1 is characterized in that: The buffer structure comprises a cavity structure arranged in the plug portion (3), a pressure plate (4) is sealed and slidably mounted in the cavity structure, a plurality of couplings (5) are equidistantly arranged on the pressure plate (4) in a circumferential manner, and the couplings (5) are connected to the inner wall of the cavity structure via a first cylindrical spring (6); The locking hole (501) is provided at an end of the coupling shaft (5) away from the pressure plate (4).

3. The anti-leakage safety throttle valve based on petroleum extraction according to claim 2 is characterized in that: The stop trigger structure comprises a retardation cavity (302) in communication with the cavity structure, a locking pin (7) is slidably mounted in the retardation cavity (302), one end of the locking pin (7) is formed with the locking portion, and the other end is connected to the inner wall of the retardation cavity (302) via a second cylindrical spring (8); The stop triggering structure further comprises a pulling kit for driving the locking pin (7) to move relative to the coupling shaft (5).

4. The anti-leakage safety throttle valve based on petroleum extraction according to claim 3 is characterized in that: A flat surface and an inclined guide surface (702) are provided at one end of the locking portion facing the locking hole (501); when the flat surface abuts against the side wall of the locking hole (501), the pressure plate (4) can be locked; when the coupling (5) acts on the inclined guide surface (702), the locking pin (7) can be moved toward the retardation chamber (302).

5. The anti-leakage safety throttle valve based on petroleum extraction according to claim 3 is characterized in that: The pulling kit includes an inclined groove (701) provided on the locking pin (7) and a pull rod (9) slidably provided through the plug portion (3), wherein the pull rod (9) is in an "L"-shaped structure and extends into the retardation cavity (302), and a convex shaft (10) provided at one end of the pull rod (9) is capable of sliding in the inclined groove (701); The pulling kit further comprises a stop ring (11) provided on the valve body housing (1), wherein the stop ring (11) abuts against the pull rod (9).

6. The anti-leakage safety throttle valve based on petroleum extraction according to claim 1, characterized in that: Also includes: A sealing member (13) is provided on the circulation channel, wherein an annular cavity (1301) is provided inside the sealing member (13), and the annular cavity (1301) is connected to a suction device (14) provided outside the valve body housing (1) via a conduit (15).

7. The anti-leakage safety throttle valve based on petroleum extraction according to claim 6, characterized in that: A second annular groove (16) is provided on the side wall of the circulation channel, and the sealing member (13) is placed in the second annular groove (16); A first annular groove (301) is provided on the plug portion (3), and the sealing member (13) can extend into the first annular groove (301) when expanded.

8. The anti-leakage safety throttle valve based on petroleum extraction according to claim 6, characterized in that: A curved portion (1302) is provided on the upper side wall of the annular cavity (1301), and when the annular cavity (1301) is filled with compressed gas, the curved portion (1302) can bend and deform.

9. The method for assembling a leakage-proof safety throttle valve based on petroleum extraction according to any one of claims 1 to 8, characterized in that: include: First, install the seal (13) on the valve body shell (1), then install the plug (3) on the adjusting screw (2), place the seal on the valve body shell (1), then place the end cover connected to the adjusting bolt on the valve body shell (1), align the corresponding threaded holes, and tighten them with bolts. Finally, install the suction device (14) and connect it to the seal (13) to complete the assembly.

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