Novel petroleum wellhead safety valve
By designing a bent structure and annular valve core in the oil wellhead safety valve, a labor-saving lever is formed, which solves the problem of difficulty in opening and closing the valve core in a high-pressure petroleum environment, and the normal use of the safety valve is achieved.
Patent Information
- Application Number
- CN202421931518.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the high-pressure petroleum environment, the valve core is easily affected by the reverse thrust of the oil, resulting in difficulty in opening and closing operations and affecting normal use.
A new type of oil wellhead safety valve was designed. The middle part of the valve body was bent into an arc structure, and an annular valve core and a partition were installed. The annular valve core rotated and moved along the length of the valve body. The bending structure was used to form a labor-saving lever to reduce the offset of oil reverse thrust on the power equipment.
It effectively avoids the problem of the power equipment driving force caused by excessive oil thrust force being offset, and ensures the normal opening and closing of the safety valve.
Smart Images
Figure CN222798159U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a novel oil wellhead safety valve. Background Art
[0002] A safety valve is a special type of valve. Its main function is to prevent the medium pressure in the pipeline or equipment from exceeding the specified value by discharging the medium outside the system when the medium pressure in the equipment or pipeline exceeds the specified value.
[0003] In the prior art, the conduction and discharge of the safety valve used in the oil wellhead are mainly realized by the valve core composed of fluororubber. The opening and closing of the safety valve can be controlled by driving the valve core to move or rotate by power equipment. The power equipment is mostly oil cylinders, air cylinders, motors, etc.
[0004] However, at present, for oil with high pressure, the valve core of the safety valve will be subjected to a large reverse thrust of the oil, which will offset the driving force generated by the power equipment on the valve core, thereby making it difficult to open and close the safety valve, affecting the normal use of the safety valve. To this end, the utility model proposes a new oil wellhead safety valve to solve the above problem. Utility Model Content
[0005] The purpose of the utility model is to provide a novel oil wellhead safety valve to solve the problems raised in the above background technology.
[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new oil wellhead safety valve, comprising:
[0007] A valve body, wherein the middle part of the valve body is bent into an arc-shaped structure, and partition plate 1 and partition plate 2 are fixedly installed on both sides of the middle part of the inner cavity of the valve body, and an annular valve core is movably arranged between the two. The annular valve core rotates around the bending center of the middle part of the valve body and keeps a seal with the inner wall of the valve body. A through hole 1 is opened at the edge of the surface of partition plate 1, and a through hole 2 is opened in the middle of the surface of partition plate 2. An arc-shaped cylinder is fixedly arranged on one side of the annular valve core, and the arc-shaped cylinder movably passes through the through hole 2.
[0008] Preferably, the other side of the annular valve core is in contact with the surface of the partition plate 1 and blocks the through hole, and a sealing gasket is bonded to the surface of the partition plate 1 and blocks the other open end of the annular valve core.
[0009] Preferably, a protrusion is fixedly provided on the inner side of the bend of the valve body, a rotation groove communicating with the middle part of the inner cavity of the valve body is opened inside the protrusion, a rotation shaft is fixed on the outer side of the annular valve core, and the rotation shaft is rotatably installed inside the protrusion.
[0010] Preferably, a connecting frame is fixedly installed between the rotating shaft and the annular valve core, a plurality of through grooves are penetrated through the surface of the connecting frame, and the connecting frame is movably inserted into the inner cavity of the rotating groove.
[0011] Preferably, a convex plate is fixedly provided on the side of the arc-shaped cylinder surface away from the rotating axis, and the convex plate is fixedly connected to a side surface of the annular valve core. The outer wall of the convex plate is provided with a tooth groove, and the tooth groove extends to the outer wall of the annular valve core. The outer side of the tooth groove is meshed with a driving gear for driving the annular valve core to move.
[0012] Preferably, a driving seat is fixedly mounted on the outer wall of the valve body at the bend, the driving gear is rotatably mounted in the inner cavity of the driving seat, and an avoidance gap is penetrated through the surface of the valve body for the driving gear to pass through.
[0013] Preferably, a guide slot is provided inside the driving seat, a driving rack is slidably mounted in the inner cavity of the guide slot, and the driving rack is meshed with the driving gear for transmission.
[0014] Preferably, a driving cylinder is fixedly mounted on the side wall of the driving seat, and the movable end of the driving cylinder extends to the inner cavity of the guide slide groove and is fixedly connected to one end of the driving rack.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model is achieved by bending the middle part of the valve body into an arc structure, and movably installing an annular valve core in the middle inner cavity of the valve body, and a partition plate one and a partition plate two are respectively arranged on both sides of the annular valve core. The annular valve core itself rotates and moves along the length direction of the valve body, and the valve body can be closed when it is close to the partition plate one, and the valve body can be opened when it is close to the partition plate two. Moreover, since the rotation center of the annular valve core is consistent with the center of the circle bent in the middle part of the valve body, the annular valve core as a whole can be regarded as a labor-saving lever, thereby avoiding excessive reverse thrust of the oil on the annular valve core, which causes the driving force of the external power equipment on the annular valve core to be offset, thereby ensuring the normal opening and closing use of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model;
[0018] Figure 2 This is a half-section schematic diagram of the valve body structure of the utility model;
[0019] Figure 3 It is a half-section schematic diagram of the annular valve core structure of the utility model.
[0020] In the figure: 1. valve body; 11. avoidance gap; 2. partition plate 1; 21. through hole 1; 22. sealing gasket; 3. partition plate 2; 31. through hole 2; 4. annular valve core; 41. arc cylinder; 42. rotating shaft; 43. connecting frame; 44. convex plate; 45. tooth groove; 5. convex block; 51. rotating groove; 6. driving seat; 61. driving gear; 62. guide slide groove; 63. driving rack; 64. driving cylinder. DETAILED DESCRIPTION
[0021] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] See also Figures 1 to 3 , the utility model provides a technical solution:
[0023] Embodiment 1, a novel oil wellhead safety valve, comprises: a valve body 1.
[0024] Specifically, the middle portion of the valve body 1 is bent into an arc-shaped structure, such as Figure 1As shown, the valve body 1 itself is a hollow tubular structure, the middle of which is bent, and the bending part is arc-shaped, and the center of the bending circle is located directly below the middle of the valve body 1. A partition 1 2 and a partition 2 3 are fixedly installed on both sides of the middle of the inner cavity of the valve body 1, and an annular valve core 4 is movably arranged between the two. The annular valve core 4 can slide in the inner cavity of the middle of the valve body 1. The partition 1 2 and the partition 2 3 are both used to limit the sliding stroke of the annular valve core 4. The annular valve core 4 rotates around the bending center of the middle of the valve body 1 and keeps a seal with the inner wall of the valve body 1. That is to say, the sliding path of the annular valve core 4 is arc-shaped, and the center of the sliding path is located directly below the middle of the valve body 1. A protrusion 5 is fixedly arranged on the inner side of the bending part of the valve body 1, and a rotating groove 51 connected to the middle of the inner cavity of the valve body 1 is opened inside the protrusion 5. A rotating shaft 42 is fixed on the outside, and the rotating shaft 42 is rotatably installed inside the protrusion 5. It can be seen that the annular valve core 4 can rotate around the rotating shaft 42 below it. When the power equipment is installed above the annular valve core 4 and drives the annular valve core 4 to rotate from the upper side of the annular valve core 4, since the oil on the left side of the inner cavity of the valve body 1 only generates a reverse thrust on the side of the annular valve core 4, the annular valve core 4 as a whole can form a labor-saving lever structure, and the external power equipment only needs a small driving force to drive the annular valve core 4 to rotate, thereby realizing the closing of the valve body 1. Furthermore, a through hole 1 21 is opened at the edge of the surface of the partition 1 2, a through hole 2 31 is opened in the middle of the surface of the partition 2 3, and an arc cylinder 41 is fixedly set on one side of the annular valve core 4, and the arc cylinder 41 movably penetrates the through hole 2 31. Figure 2 and Figure 3 As shown, when the annular valve core 4 rotates and moves and fits the surface of the partition 2, the through hole 21 is blocked by the annular valve core 4, and the inner cavity of the valve body 1 is in a closed state. When the annular valve core 4 rotates and moves away from the partition 2, the oil in the left end of the inner cavity of the valve body 1 can pass through the through hole 21 to enter the inner cavity of the annular valve core 4, and then pass through the arc tube 41 to enter the right end of the inner cavity of the valve body 1, so as to open the valve body 1. In other words, the device can control the opening and closing of the inner cavity of the valve body 1 only by controlling the rotation of the annular valve core 4 to achieve the fitting or separation of the annular valve core 4 and the partition 2, and the annular valve core 4 itself is a labor-saving lever, which can effectively avoid the excessive oil pressure causing the driving force of the external power equipment on the annular valve core 4 to be offset, thereby ensuring the normal use of the device.
[0025] In order to improve the sealing between the annular valve core 4 and the partition 2, the other side of the annular valve core 4 of the present application is in contact with the surface of the partition 2 and blocks the through hole 21. A sealing gasket 22 is bonded to the surface of the partition 2 and blocks the other open end of the annular valve core 4. When the annular valve core 4 is close to the partition 2 and in contact with it, the through hole 21 is blocked by the annular valve core 4, and the opening of the inner cavity of the annular valve core 4 is blocked by the partition 2, thereby effectively preventing oil leakage.
[0026] In order to connect the rotating shaft 42 with the annular valve core 4, the present application also has a connecting frame 43 fixedly installed between the rotating shaft 42 and the annular valve core 4, and a plurality of through grooves are opened through the surface of the connecting frame 43. The connecting frame 43 is movably inserted into the inner cavity of the rotating groove 51. The connecting frame 43 is used to connect the rotating shaft 42 and the annular valve core 4 to ensure that the annular valve core 4 can rotate around the rotating shaft 42.
[0027] In order to drive the annular valve core 4 to move, the present application also has a convex plate 44 fixedly arranged on one side of the surface of the arc cylinder 41 away from the rotating shaft 42, the convex plate 44 is fixedly connected to one side of the annular valve core 4, the outer wall of the convex plate 44 is provided with a tooth groove 45, and the tooth groove 45 extends to the outer wall of the annular valve core 4, and the outer side of the tooth groove 45 is meshed with a driving gear 61 for driving the annular valve core 4 to move, when the driving gear 61 rotates, the annular valve core 4 can be driven to rotate around the rotating shaft 42 through the tooth groove 45, and the driving position of the driving gear 61 to the annular valve core 4 is located on the upper side of the annular valve core 4, ensuring that the annular valve core 4 itself is a labor-saving lever, and the driving seat 6 only needs a small driving force on the annular valve core 4 to offset the reverse thrust of the oil on the annular valve core 4.
[0028] In order to position the driving gear 61, the present application also has a driving seat 6 fixedly installed on the outer wall at the bend of the valve body 1, and the driving gear 61 is rotatably installed in the inner cavity of the driving seat 6. The surface of the valve body 1 is penetrated by a relief notch 11 for the driving gear 61 to pass through. The driving seat 6 is used to position the driving gear 61 to avoid separation between the driving gear 61 and the tooth groove 45. The setting of the relief notch 11 avoids collision between the driving gear 61 and the valve body 1.
[0029] In order to drive the driving gear 61 to rotate, the present application also has a guide slot 62 opened inside the driving seat 6, and a driving rack 63 is slidably installed in the inner cavity of the guide slot 62, and the driving rack 63 is meshed with the driving gear 61 for transmission. Figure 1 As shown, when the driving rack 63 slides along the inner cavity of the guide groove 62, the driving rack 63 can drive the driving gear 61 to rotate. Since the diameter of the driving gear 61 itself is smaller than the diameter of the rotational movement path of the annular valve core 4, the driving gear 61 can provide a larger torque for the annular valve core 4 to drive the annular valve core 4 to rotate.
[0030] In order to control the rotational movement direction of the annular valve core 4, the present application also has a driving cylinder 64 fixedly installed on the side wall of the driving seat 6, and the movable end of the driving cylinder 64 extends to the inner cavity of the guide groove 62 and is fixedly connected to one end of the driving rack 63. When the driving cylinder 64 works and retracts, it can drive the driving rack 63 to slide back and forth, and then through the transmission of the driving gear 61, it can control the rotational movement direction of the annular valve core 4, and then control the opening and closing of the inner cavity of the valve body 1.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A new type of oil wellhead safety valve, characterized by: include: A valve body (1), wherein the middle portion of the valve body (1) is bent into an arc-shaped structure, a partition plate 1 (2) and a partition plate 2 (3) are fixedly installed on both sides of the middle portion of the inner cavity of the valve body (1), and an annular valve core (4) is movably arranged between the two, the annular valve core (4) rotates around the bending center of the middle portion of the valve body (1) and maintains a seal with the inner wall of the valve body (1), a through hole 1 (21) is opened at the edge of the surface of the partition plate 1 (2), and a through hole 2 (31) is opened in the middle portion of the surface of the partition plate 2 (3), and an arc-shaped cylinder (41) is fixedly arranged on one side of the annular valve core (4), and the arc-shaped cylinder (41) movably passes through the through hole 2 (31).
2. A novel oil wellhead safety valve according to claim 1, characterized in that: The other side of the annular valve core (4) fits the surface of the partition plate (2) and seals the through hole (21); a sealing gasket (22) is bonded to the surface of the partition plate (2) and seals the other open end of the annular valve core (4).
3. A novel oil wellhead safety valve according to claim 1, characterized in that: A protrusion (5) is fixedly provided on the inner side of the bend of the valve body (1), and a rotation groove (51) communicating with the middle part of the inner cavity of the valve body (1) is provided inside the protrusion (5). A rotation shaft (42) is fixedly provided on the outer side of the annular valve core (4), and the rotation shaft (42) is rotatably installed inside the protrusion (5).
4. A novel oil wellhead safety valve according to claim 3, characterized in that: A connecting frame (43) is fixedly installed between the rotating shaft (42) and the annular valve core (4), a plurality of through grooves are formed through the surface of the connecting frame (43), and the connecting frame (43) is movably plugged into the inner cavity of the rotating groove (51).
5. A novel oil wellhead safety valve according to claim 4, characterized in that: A convex plate (44) is fixedly provided on one side of the surface of the arc-shaped cylinder (41) away from the rotating shaft (42), and the convex plate (44) is fixedly connected to one side of the annular valve core (4). A tooth groove (45) is provided on the outer wall of the convex plate (44), and the tooth groove (45) extends to the outer wall of the annular valve core (4). A driving gear (61) for driving the annular valve core (4) to move is meshedly provided on the outer side of the tooth groove (45).
6. A novel oil wellhead safety valve according to claim 5, characterized in that: A drive seat (6) is fixedly mounted on the outer wall of the bend of the valve body (1); the drive gear (61) is rotatably mounted in the inner cavity of the drive seat (6); and a relief notch (11) is provided through the surface of the valve body (1) for the drive gear (61) to pass through.
7. A novel oil wellhead safety valve according to claim 6, characterized in that: A guide slot (62) is provided inside the driving seat (6), a driving rack (63) is slidably mounted in the inner cavity of the guide slot (62), and the driving rack (63) is meshed with the driving gear (61) for transmission.
8. A novel oil wellhead safety valve according to claim 7, characterized in that: A driving cylinder (64) is fixedly mounted on the side wall of the driving seat (6), and a movable end of the driving cylinder (64) extends into the inner cavity of the guide slide groove (62) and is fixedly connected to one end of the driving rack (63).