Ground well control valve

Abstract

The invention relates to a ground well control valve and belongs to the technical field of valves, the ground well control valve comprises a valve body and a valve element arranged in the valve body in a sliding mode, the valve element is sleeved with annular sealing rings, the valve element is sleeved with annular bosses, the annular bosses correspond to the annular sealing rings in a one-to-one mode, the annular sealing rings are arranged on the corresponding annular bosses in a sleeving mode, and the annular sealing rings are arranged on the annular bosses in a one-to-one mode. An adjusting mechanism used for adjusting the corresponding annular sealing ring to expand outwards or limiting the corresponding annular sealing ring to expand outwards is arranged in the annular boss. The effect of ensuring the sealing performance of the control valve is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and in particular to a well control valve. Background Art

[0002] To facilitate refueling aircraft at airports, aviation fuel is usually stored underground, and wells are provided for refueling equipment and pipelines to access. The well control valve is a liquid control component in the well pipeline.

[0003] In related technologies, a well control valve is disclosed in a Chinese patent document with the publication number CN215635137U, which includes a valve body and a valve core. The valve core is slidably matched with the valve body. The valve core includes a cylindrical valve sleeve and a valve stem. The cylindrical valve sleeve is attached to the inner wall of the valve body and is slidably matched with the valve body. The valve stem is fixedly connected to the valve sleeve. Three through holes for connecting pipelines are provided on the surface of the valve body and are equally spaced along a straight line. A flow-limiting valve is installed in one of the through holes. Since only one path for liquid to enter and exit is required in the working state of the valve, there are only two channels on the valve sleeve corresponding to the through holes; three annular sealing rings are sleeved on the valve sleeve at intervals, and the two channels on the valve sleeve are respectively located between two adjacent annular sealing rings. By operating the valve stem to move the valve sleeve to different positions, the two channels are made to correspond to the first two or the last two through holes of the valve body, thereby forming two working states of the valve.

[0004] In view of the above related technologies, during the long-term reciprocating movement of the valve sleeve of the valve core, the annular sealing rings sleeved on the outer wall are prone to wear, resulting in a decrease in the sealing performance of the control valve. Summary of the Invention

[0005] To help ensure the sealing performance of the control valve, the present application provides a well control valve.

[0006] The well control valve provided by the present application adopts the following technical solutions: A well control valve includes a valve body and a valve core slidably disposed in the valve body. An annular sealing ring is sleeved on the valve core. An annular boss is sleeved on the valve core. The annular bosses correspond to the annular sealing rings one by one. The annular sealing rings are sleeved on the corresponding annular bosses. An adjusting mechanism for adjusting the outward expansion or restricting the outward expansion of the corresponding annular sealing ring is provided in the annular boss.

[0007] Preferably, the adjusting mechanism includes a plurality of first springs disposed within the annular boss, a plurality of adjusting ropes disposed on the annular sealing ring, and a pulling and releasing assembly disposed on the annular boss. The plurality of first springs are circumferentially spaced along the corresponding annular sealing ring. One end of the first spring remote from the inner wall of the annular boss is disposed on the corresponding annular sealing ring. When the first spring is in its natural state, the outer diameter of the annular sealing ring is greater than the outer diameter of the annular boss. The plurality of adjusting ropes are circumferentially spaced along the corresponding annular sealing ring. The pulling and releasing assembly is configured to pull or release the adjusting ropes.

[0008] Preferably, the adjusting ropes correspond to the first springs one by one, and one end of the adjusting rope close to the annular sealing ring is located within the corresponding first spring.

[0009] Preferably, the pulling and releasing assembly includes a set of protrusions disposed on the annular boss, an elastic member disposed within the annular boss, and a transmission member disposed on the set of protrusions. There are two sets of protrusions on the annular boss, and the two sets of protrusions are located on opposite sides of the corresponding annular sealing ring. Each set of protrusions includes a plurality of arc-shaped protrusions slidably disposed on the annular boss. The plurality of arc-shaped protrusions are circumferentially spaced along the annular boss. The arc-shaped protrusions slide in the radial direction of the annular boss. The arc-shaped protrusions in each set of protrusions correspond to the adjusting ropes one by one. The elastic member is configured to push the arc-shaped protrusions to slide away from the annular boss, and the transmission member is configured to pull the corresponding adjusting rope when the arc-shaped protrusions on either side of the annular sealing ring slide away from the annular boss.

[0010] Preferably, the annular boss is provided with grooves, and the grooves correspond to the arc-shaped protrusions one by one. The arc-shaped protrusions slidably pass through the corresponding grooves, and the elastic member is disposed within the grooves.

[0011] Preferably, the elastic member includes a second spring for pushing the arc-shaped protrusions to slide away from the annular boss. One end of the second spring is disposed on the bottom wall of the groove, and the other end is disposed on the arc-shaped protrusion. The elastic force of the second spring is greater than the elastic force of the first spring.

[0012] Preferably, the transmission member includes a first reel rotatably disposed within the groove, a second reel coaxially connected to the first reel, and a transmission rope wound around the first reel. The diameter of the first reel is smaller than the diameter of the second reel. One end of the adjusting rope remote from the annular sealing ring slidably penetrates into the corresponding groove and is wound around the second reel. One end of the transmission rope remote from the first reel is disposed on the corresponding arc-shaped protrusion, and the winding direction of the transmission rope is opposite to that of the adjusting rope.

[0013] Preferably, the diameter of the first reel is smaller than the diameter of the second reel.

[0014] Preferably, the arc-shaped protrusion includes a cylindrical portion slidably disposed in a corresponding groove and an arc-shaped portion disposed on the cylindrical portion. The arc-shaped portion protrudes outward in a direction away from the corresponding cylindrical portion, and the arc-shaped portion is adapted to abut against the inner wall of the valve body.

[0015] Preferably, an annular gasket is disposed on the cylindrical portion of the arc-shaped protrusion, and the annular gasket abuts against the inner wall of the groove.

[0016] In summary, the present application includes the following beneficial technical effects: When the control valve is in any working state, the annular sealing ring is adjusted to expand outward through the adjusting mechanism, so that even if the annular sealing ring is worn, elastic compensation can be performed, and the annular sealing ring can always be in close contact with the inner wall of the valve body, thereby helping to ensure the sealing performance of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic transverse view of the overall structure of an embodiment of the present application.

[0018] Figure 2 is a schematic view of the overall structure of the live valve sleeve portion of the valve core in an embodiment of the present application.

[0019] Figure 3 is Figure 1 an enlarged view of part A in

[0020] Figure 4 is a schematic view of the overall structure of the transmission member in an embodiment of the present application.

[0021] Description of the reference numerals: 1, valve body; 2, valve core; 3, annular sealing ring; 4, annular boss; 5, annular mounting groove; 6, first spring; 7, adjusting rope; 8, arc-shaped protrusion; 81, cylindrical portion; 82, arc-shaped portion; 9, groove; 10, second spring; 11, transmission member; 111, first reel; 112, second reel; 113, transmission rope; 12, annular gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following is a further detailed description of the present application in conjunction with Figures 1 - 4 The present application is further described in detail below.

[0023] An embodiment of the present application discloses a ground well control valve. Referring to Figure 1 , the ground well control valve includes a valve body 1 and a valve core 2. The live valve sleeve portion of the valve core 2 is slidably disposed in the valve body 1, and an annular sealing ring 3 is sleeved on the live valve sleeve portion of the valve core 2. Specifically, there are three annular sealing rings 3 on the valve core 2, which are the same as those in the related art.

[0024] Referring to Figure 1 and Figure 2, an annular boss 4 is integrally formed on the valve core 2. The annular bosses 4 correspond to the annular sealing rings 3 one by one. The annular sealing rings 3 are sleeved on the corresponding annular bosses 4. The outer diameter of the annular boss 4 is larger than the outer diameter of the live valve sleeve part on the valve core 2. The arrangement of the annular boss 4 helps to ensure the smooth movement of the live valve sleeve part on the valve core 2.

[0025] Refer to Figure 2 , an annular installation groove 5 is formed on the outer wall of the annular boss 4. The annular sealing ring 3 is located in the corresponding annular installation groove 5. An adjusting mechanism for adjusting the outward expansion or limiting the outward expansion of the corresponding annular sealing ring 3 is arranged in the annular installation groove 5.

[0026] When the control valve is in any working state, the entire outer wall of the annular boss 4 abuts against the inner wall of the valve body 1, and the annular sealing ring 3 also abuts against the inner wall of the valve body 1. At this time, the adjusting mechanism is used to adjust the annular sealing ring 3 to expand outward, so that after the annular sealing ring 3 is worn, elastic compensation can also be carried out, so that the annular sealing ring 3 can always tightly abut against the inner wall of the valve body 1, which helps to ensure the sealing performance of the control valve.

[0027] Since the valve core 2 will move as required when the ground well control valve switches the working state, when the annular sealing ring 3 moves to align with the through hole on the valve body 1 under the movement of the valve core 2, the adjusting mechanism limits the outward expansion of the annular sealing ring 3, so that the valve core 2 can smoothly drive the annular sealing ring 3 to abut against the inner wall of other positions of the valve body 1 during the movement process, and it is not easy to occur that the annular sealing ring 3 extends toward the position of the through hole of the valve body 1 and interferes with or deforms the inner wall of the through hole.

[0028] Refer to Figure 2 and Figure 3 , to facilitate adjusting the outward expansion or limiting the outward expansion of the corresponding annular sealing ring 3, the adjusting mechanism includes a first spring 6, an adjusting rope 7 and a pulling and releasing assembly. A plurality of first springs 6 are circumferentially spaced along the corresponding annular sealing ring 3. The plurality of first springs 6 are all located in the corresponding annular installation groove 5. Each first spring 6 extends along the radial direction of the annular boss 4. One end of each first spring 6 is fixed on the bottom wall of the corresponding annular installation groove 5, and the other end is fixed on the corresponding annular sealing ring 3. The first spring 6 is always in a compressed state; when the first spring 6 is in a natural state, the outer diameter of the annular sealing ring 3 is larger than the outer diameter of the corresponding annular boss 4. Refer to Figure 2 and Figure 3, for facilitating the control of the expansion of the annular sealing ring 3, a plurality of adjusting ropes 7 are also circumferentially spaced along the corresponding annular sealing ring 3. Specifically, the adjusting ropes 7 correspond to the first springs 6 one by one. One end of the adjusting rope 7 is located inside the corresponding first spring 6 and fixedly connected to the inner wall of the annular sealing ring 3, and the other end is movably arranged. The pulling and releasing assembly is arranged on the annular boss 4, and the pulling and releasing assembly is used to pull or loosen the movable end of the adjusting rope 7, so that the force received by the annular sealing ring 3 can be adjusted.

[0029] Referring to Figure 2 and Figure 3 , for facilitating the pulling or loosening of the movable end of the adjusting rope 7, the pulling and releasing assembly includes a convex group, an elastic member and a transmission member. The convex group is arranged on the corresponding annular boss 4. There are two sets of convex groups on each annular boss 4. The two sets of convex groups are located on the opposite sides of the annular sealing ring 3. Each set of convex groups includes a plurality of arc-shaped protrusions 8 slidably penetrating through the corresponding annular boss 4. The plurality of arc-shaped protrusions 8 in each set of convex groups are circumferentially spaced along the annular boss 4. The arc-shaped protrusions 8 slidably penetrate through the corresponding annular boss 4 in the radial direction of the valve core 2. Specifically, the arc-shaped protrusions 8 in each set of convex groups correspond to the adjusting ropes 7 one by one. The elastic member is arranged inside the annular boss 4 and corresponds to the arc-shaped protrusions 8 one by one. The elastic member is used to push the corresponding arc-shaped protrusion 8 to slide in a direction away from the valve core 2. The transmission member 11 is arranged on the arc-shaped protrusion 8. The transmission member 11 is used to pull the adjusting rope 7 when the arc-shaped protrusions 8 on any side of the annular sealing ring 3 slide in a direction away from the valve core 2.

[0030] Referring to Figure 2 and Figure 3 , for facilitating the guiding and limiting of the sliding of the arc-shaped protrusion 8, a groove 9 is formed on the annular boss 4. The groove 9 corresponds to the arc-shaped protrusion 8 one by one. The arc-shaped protrusion 8 slidably penetrates through the corresponding groove 9. The elastic member is arranged in the corresponding groove 9. The sliding direction of the corresponding arc-shaped protrusion 8 is defined by the groove 9, so that the arc-shaped protrusion 8 will not be deflected or deformed.

[0031] Referring to Figure 2 and Figure 3, to facilitate the sliding of the arc-shaped protrusion 8 away from the valve core 2, the elastic member includes a second spring 10. The second spring 10 is located in the groove 9, and the extending direction of the second spring 10 is parallel to the sliding direction of the corresponding arc-shaped protrusion 8. A support plate (not shown in the figure) is fixed in the groove 9. The support plate is located on the side of the corresponding arc-shaped protrusion 8 close to the bottom wall of the groove 9. One end of the second spring 10 is fixed on the corresponding support plate, and the other end is fixed on the arc-shaped protrusion 8. The elastic force of the second spring 10 is greater than the elastic force of the first spring 6. When the second spring 10 is in the natural state, the length of the arc-shaped protrusion 8 extending out of the groove 9 is 1 mm. When the second spring 10 is in the natural state, the outer diameter of the annular sealing ring 3 is greater than or equal to the outer diameter of the corresponding annular boss 4, and the outer diameter of the annular sealing ring 3 is less than twice the distance from the side of the arc-shaped protrusion 8 away from the groove 9 to the axis of the valve core 2.

[0032] Referring to Figure 3 and Figure 4 , to facilitate the pulling of the adjusting rope 7 when the arc-shaped protrusion 8 on either side of the annular sealing ring 3 slides away from the valve core 2, the transmission member 11 includes a first reel 111, a second reel 112, and a transmission rope 113. The first reel 111 is rotatably arranged in the groove 9. The first reel 111 is located on the side of the support plate away from the arc-shaped protrusion 8. The rotation axis of the first reel 111 is perpendicular to the sliding direction of the corresponding arc-shaped protrusion 8. The second reel 112 is coaxially fixed on the first reel 111. The diameter of the first reel 111 is smaller than the diameter of the second reel 112. The adjusting rope 7 has two connection ends, and the two connection ends correspond to the second reels 112 on both sides one by one. The end of the connection end of the adjusting rope 7 away from the annular sealing ring 3 slides into the corresponding groove 9 and is wound around the second reel 112. The transmission rope 113 is wound around the first reel 111. The end of the transmission rope 113 away from the first reel 111 is fixed on the corresponding arc-shaped protrusion 8. The winding direction of the transmission rope 113 is opposite to that of the connection end of the adjusting rope 7.

[0033] When the arc-shaped protrusions 8 on both sides of the annular sealing ring 3 are pressed against the inner wall of the valve body 1 and are in the pressed state, the arc-shaped protrusions 8 press the corresponding second springs 10, reducing the pulling force on the transmission rope 113. The pulling force of the transmission rope 113 on the first reel 111 decreases, causing the pulling force of the second reel 112 on the connection end of the adjusting rope 7 to decrease. As a result, the pulling force of the adjusting rope 7 on the annular sealing ring 3 decreases, enabling the annular sealing ring 3 to have a tendency to expand outward under the elastic force of the compressed first spring 6, so as to still be able to perform elastic compensation to ensure the sealing performance after the annular sealing ring 3 is worn.

[0034] Referring to Figure 3 and Figure 4, Further, the arc-shaped protrusion 8 includes a cylindrical portion 81 and an arc-shaped portion 82. The cylindrical portion 81 is slidably disposed in the corresponding groove 9. The arc-shaped portion 82 is integrally formed on the side of the cylindrical portion 81 away from the bottom wall of the corresponding groove 9. The arc-shaped portion 82 protrudes outward in a direction away from the corresponding cylindrical portion 81. The arc-shaped portion 82 is used to abut against the inner wall of the valve body 1. The second spring 10 is fixed to the bottom wall of the cylindrical portion 81. One end of the transmission rope 113 away from the first reel 111 is fixed to the cylindrical portion 81, so that during the reciprocating movement of the valve core 2, the arc-shaped protrusion 8 can move from the through-hole position to the position of the inner wall of the valve body 1 and relatively slide through the arc surface, so as to press the arc-shaped protrusion 8 to move in a direction close to the corresponding groove 9.

[0035] Referring to Figure 3 and Figure 4 , to improve the sealing performance inside the groove 9 and the annular mounting groove 5, the annular sealing ring 3 abuts against the inner wall of the corresponding annular mounting groove 5; an annular gasket 12 is fixedly embedded on the cylindrical portion 81 of the arc-shaped protrusion 8, and the annular gasket 12 abuts against the inner wall of the groove 9, thereby preventing oil from entering the groove 9 and the annular mounting groove 5.

[0036] The implementation principle of the embodiment of the present application is as follows: When the valve core 2 moves to any working state, the outer wall of the annular boss 4 on the valve core 2 abuts against the inner wall of the valve body 1. At this time, a plurality of arc-shaped protrusions 8 on both sides of the annular sealing ring 3 are all pressed against the inner wall of the valve body 1 and are in a pressed state. The arc-shaped protrusion 8 presses the corresponding second spring 10, reducing the tension on the transmission rope 113, so that the tension of the transmission rope 113 on the first reel 111 is reduced, and the tension of the second reel 112 on the adjustment rope 7 is reduced. Furthermore, the tension of the adjustment rope 7 on the annular sealing ring 3 is reduced to a relaxed state. At this time, the annular sealing ring 3 has a tendency to expand outward under the elastic force of the compressed first spring 6, so that even after the annular sealing ring 3 is worn, elastic compensation can be performed, so that the annular sealing ring 3 can always closely abut against the inner wall of the valve body 1, thereby ensuring the sealing performance of the control valve.

[0037] When the control valve switches its working state, the valve core 2 needs to move. As long as the arc-shaped protrusion 8 on one side of the annular sealing ring 3 on the annular boss 4 moves to align with the through-hole position on the valve body 1, the arc-shaped protrusion 8 that is separated from the inner wall of the valve body 1 moves a certain distance in the direction away from the corresponding groove 9 under the thrust of the corresponding second spring 10, causing the transmission rope 113 to pull the first reel 111 to rotate a certain angle to unwind the transmission rope 113. The first reel 111 drives the second reel 112 to rotate synchronously to wind up the connecting end of the corresponding adjusting rope 7. As long as the connecting end on one side of the adjusting rope 7 is wound up, the adjusting rope 7 is tensioned and has a pulling force on the annular sealing ring 3, thereby restricting the annular sealing ring 3 from expanding outward under the thrust of the first spring 6 when it moves to align with the through-hole position of the valve body 1. Thus, during the process of the valve core 2 moving to adjust its working state, the annular sealing ring 3 will not expand completely outward and cause interference with the inner wall of the through-hole.

[0038] Then, the valve core 2 is gradually adjusted to another working state, and the arc-shaped protrusions 8 on both sides of the annular sealing ring 3 on the annular boss 4 are gradually misaligned with the through-hole on the valve body 1. Under the abutment of the inner wall of the valve body 1, the arc-shaped protrusion 8 reduces the pulling force on the transmission rope 113, and the pulling force of the transmission rope 113 on the first reel 111 decreases, causing the pulling force of the two second reels 112 on the adjusting rope 7 to decrease. Furthermore, the adjusting rope 7 is in a relaxed state, and the annular sealing ring 3 has a tendency to expand outward under the elastic force of the compressed first spring 6, thereby ensuring the sealing performance of the control valve in two working states.

[0039] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A ground well control valve, comprising a valve body (1) and a valve core (2) slidably arranged in the valve body (1), an annular sealing ring (3) is sleeved on the valve core (2), and it is characterized in that: An annular boss (4) is sleeved on the valve core (2). The annular bosses (4) and the annular sealing rings (3) are in one-to-one correspondence. The annular sealing rings (3) are sleeved on the corresponding annular bosses (4). An adjusting mechanism for adjusting the outward expansion or restricting the outward expansion of the corresponding annular sealing ring (3) is arranged in the annular boss (4).

2. The submersible well control valve according to claim 1, characterized in that: The adjusting mechanism includes a plurality of first springs (6) arranged in the annular boss (4), a plurality of adjusting ropes (7) arranged on the annular sealing ring (3), and a pulling and releasing assembly arranged on the annular boss (4). The plurality of first springs (6) are circumferentially spaced apart along the corresponding annular sealing ring (3). One end of the first spring (6) away from the inner wall of the annular boss (4) is arranged on the corresponding annular sealing ring (3). When the first spring (6) is in a natural state, the outer diameter of the annular sealing ring (3) is larger than the outer diameter of the annular boss (4). The plurality of adjusting ropes (7) are circumferentially spaced apart along the corresponding annular sealing ring (3). The pulling and releasing assembly is used for pulling or loosening the adjusting rope (7).

3. The ground well control valve according to claim 2, wherein: The adjusting ropes (7) and the first springs (6) are in one-to-one correspondence. One end of the adjusting rope (7) close to the annular sealing ring (3) is located in the corresponding first spring (6).

4. The ground well control valve according to claim 2, characterized in that: The pulling and releasing assembly includes a set of protrusions arranged on the annular boss (4), an elastic member arranged in the annular boss (4), and a transmission member arranged on the set of protrusions. There are two sets of protrusions on the annular boss (4). The two sets of protrusions are located on opposite sides of the corresponding annular sealing ring (3). Each set of protrusions includes a plurality of arc-shaped protrusions (8) slidably arranged on the annular boss (4). The plurality of arc-shaped protrusions (8) are circumferentially spaced apart along the annular boss (4). The arc-shaped protrusions (8) slide in the radial direction of the annular boss (4). The arc-shaped protrusions (8) in each set of protrusions and the adjusting ropes (7) are in one-to-one correspondence. The elastic member is used for pushing the arc-shaped protrusions (8) to slide in a direction away from the annular boss (4). The transmission member is used for pulling the corresponding adjusting rope (7) when the arc-shaped protrusions (8) on any side of the annular sealing ring (3) slide in a direction away from the annular boss (4).

5. The ground well control valve according to claim 4, wherein: A groove (9) is formed in the annular boss (4). The grooves (9) and the arc-shaped protrusions (8) are in one-to-one correspondence. The arc-shaped protrusions (8) slidably penetrate through the corresponding grooves (9). The elastic member is arranged in the groove (9).

6. The submersible well control valve according to claim 5, wherein: The elastic member includes a second spring (10) for pushing the arc-shaped protrusions (8) to slide in a direction away from the annular boss (4). One end of the second spring (10) is arranged on the bottom wall of the groove (9), and the other end is arranged on the arc-shaped protrusion (8). The elastic force of the second spring (10) is greater than the elastic force of the first spring (6).

7. The submersible well control valve according to claim 5, characterized in that: The transmission member (11) includes a first reel (111) rotatably disposed in the groove (9), a second reel (112) coaxially connected to the first reel (111), and a transmission rope (113) wound around the first reel (111). One end of the adjusting rope (7) away from the annular sealing ring (3) slidably penetrates into the corresponding groove (9) and is wound around the second reel (112). One end of the transmission rope (113) away from the first reel (111) is disposed on the corresponding arc-shaped protrusion (8). The winding direction of the transmission rope (113) is opposite to that of the adjusting rope (7).

8. The ground well control valve according to claim 7, wherein: The diameter of the first reel (111) is smaller than that of the second reel (112).

9. The submersible well control valve according to claim 5, characterized in that: The arc-shaped protrusion (8) includes a cylindrical portion (81) slidably disposed in the corresponding groove (9) and an arc-shaped portion (82) disposed on the cylindrical portion (81). The arc-shaped portion (82) protrudes outward in a direction away from the corresponding cylindrical portion (81). The arc-shaped portion (82) is used to abut against the inner wall of the valve body (1).

10. The ground well control valve according to claim 9, characterized in that: An annular gasket (12) is disposed on the cylindrical portion (81) of the arc-shaped protrusion (8). The annular gasket (12) abuts against the inner wall of the groove (9).

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