Petroleum underground plug valve

Abstract

The utility model relates to the field of plug valves, in particular to a petroleum underground plug valve. Comprising a plug valve body, a connector, a telescopic rod and a fixing mechanism, the fixing mechanism comprises a fixing block, a mounting frame, a rotating ring, a driving assembly, a threaded rod and a fixing head, after the telescopic rod is rotated, the driving assembly is started, and due to the fact that the output end of the driving assembly is in mechanical transmission with a transmission gear, the rotating ring is driven to rotate at the top end of the mounting frame; as the interior of the rotating ring is in threaded connection with a threaded rod, the threaded rod is screwed in the rotating ring, and then the fixed head is driven to move towards the direction of the fixed hole in the rotating process until the fixed head is embedded into the corresponding fixed hole, so that the position of the telescopic rod is fixed, and the situation that when a worker mistakenly touches the telescopic rod, the telescopic rod is damaged is avoided. And the phenomenon that the oil inlet and outlet speed in the plug valve body is changed is further caused.

Description

Technical Field

[0001] The utility model relates to the field of plug valves, in particular to a petroleum downhole plug valve. Background Art

[0002] During the oil extraction process, the oil well plug valve can prevent the fluid from flowing back in the pipeline and ensure the one-way flow of the fluid from the wellhead to the ground equipment, thereby maintaining the normal progress of the production process and the controllability of the operation. However, during oil well operations, the oil is mostly in a medium and high pressure state, which often makes it very difficult for workers to open and close the plug valve, so that rotating the plug valve requires a lot of force and is difficult to control.

[0003] In order to solve the above problems, the prior art patent publication number (CN210088050U) discloses a high-pressure resistant oil well plug valve structure, including a valve body, a fixed plate, a threaded hole and an oil inlet hole, the top of the valve body is fixedly connected with a fixed plate, the surface of the fixed plate is provided with a threaded hole, one side of the valve body is provided with an oil inlet hole, and the other side of the valve body is provided with an oil outlet hole, the inner wall of the valve body is movably connected with a plug, the surface of the plug is provided with a through hole, the inner wall of the plug is clamped with a rotating rod, the top of the rotating rod is clamped with a connecting head, one side of the connecting head is plugged with a telescopic rod, the surface of the telescopic rod is threadedly connected with a second bolt, and the end of the telescopic rod away from the connecting head is sleeved with a rubber sleeve, through the setting of the connecting head, a fulcrum can be provided for rotating the plug, through the setting of the telescopic rod, the telescopic rod can be rotated to rotate the plug, thereby achieving the effect of controlling the inflow and outflow of oil, and through the setting of the second bolt, the length of the telescopic rod can be controlled, and the length of the telescopic rod can be adjusted to save effort to achieve the effect of controlling the inflow and outflow of oil.

[0004] However, the telescopic rod in the existing high-pressure resistant oil well plug valve structure cannot be fixed after use. When the staff touches it by mistake, it is easy to cause the telescopic rod to rotate, thereby causing the oil inlet and outlet speed inside the plug valve to change. Utility Model Content

[0005] The utility model aims to provide a downhole petroleum plug valve, aiming to solve the technical problem that the telescopic rod in the existing high-pressure resistant downhole petroleum plug valve structure cannot be fixed after use, and when the staff touches it by mistake, it is easy to cause the telescopic rod to rotate, thereby causing the oil inlet and outlet speed inside the plug valve to change.

[0006] To achieve the above-mentioned purpose, the utility model provides a petroleum downhole plug valve, comprising a plug valve body, a connector, a telescopic rod and a fixing mechanism, wherein the top end of the rotating rod of the plug valve body is provided with the connector, the connector is located outside the outer shell of the plug valve body, the telescopic rod is provided with the connector, the surface of the telescopic rod is threadedly connected with a bolt, and the end of the telescopic rod away from the connector is sleeved with a rubber sleeve;

[0007] The fixing mechanism includes a fixing block, a mounting frame, a rotating ring, a driving assembly, a threaded rod and a fixing head. The fixing block is fixedly mounted on the top end of the outer shell of the plug valve body and is arranged on the outside of the connecting head. A plurality of fixing holes are evenly arranged on the fixing block. A mounting protrusion is arranged at one end of the telescopic rod close to the connecting head, and the mounting frame is arranged at the mounting protrusion. The rotating ring is rotatably arranged on the top end of the mounting frame, and the threaded rod is connected to the internal thread of the rotating ring. A through hole is penetrated at one end of the telescopic rod close to the connecting head, and the threaded rod penetrates the through hole. The fixing head is arranged at the bottom of the threaded rod, and the fixing head is adapted to the fixing hole. The driving assembly is also arranged on the top end of the mounting frame, and a transmission gear is arranged on the outside of the rotating ring. The output end of the driving assembly is mechanically transmitted with the transmission gear.

[0008] Wherein, the driving assembly includes a servo motor and an output gear. The servo motor is installed at the top of the mounting frame. The output end of the servo motor is provided with the output gear, and the output gear is meshed with the transmission gear.

[0009] Wherein, two limiting rings are arranged outside the rotating ring, and the two limiting rings are respectively located on the upper and lower surfaces of the top end of the mounting frame.

[0010] Wherein, a surface of each of the limiting rings close to the top of the mounting frame is provided with an annular groove, and a plurality of balls are provided inside the annular groove.

[0011] Among them, the oil well downhole plug valve also includes a protective shell, and the protective shell is also arranged at the top of the mounting frame. The protective shell is arranged outside the output gear and the transmission gear. A fixed foot is arranged on a side of the protective shell close to the mounting frame, and the fixed foot is detachably connected to the top of the mounting frame.

[0012] Wherein, the protective shell includes a first half shell and a second half shell, the first half shell and the second half shell are respectively located on both sides of the output gear, the fixing foot is provided on a side of the first half shell close to the mounting frame, and the second half shell is detachably connected to the first half shell and is located on a side of the first half shell away from the fixing foot.

[0013] The utility model provides a petroleum downhole plug valve. After the telescopic rod is rotated, the driving component is started. Due to the mechanical transmission between the output end of the driving component and the transmission gear, the rotating ring is driven to rotate on the top end of the mounting frame. Since the internal thread of the rotating ring is connected with the threaded rod, the threaded rod is screwed into the interior of the rotating ring, thereby driving the fixed head to move toward the fixing hole during the rotation process until the fixed head is embedded in the corresponding fixing hole, thereby completing the fixation of the position of the telescopic rod, and avoiding the phenomenon that when the staff accidentally touches the telescopic rod, the telescopic rod is caused to rotate, thereby causing the oil inlet and outlet speed inside the plug valve body to change. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of a petroleum downhole plug valve according to the first embodiment of the utility model.

[0016] Figure 2 The utility model provides Figure 1 A magnified view of the local structure at A.

[0017] Figure 3 It is a schematic diagram of the connection structure between the threaded rod and the rotating ring in the first embodiment of the utility model.

[0018] Figure 4 It is a structural schematic diagram of a petroleum downhole plug valve according to a second embodiment of the utility model.

[0019] Figure 5 The utility model provides Figure 4 A magnified view of the local structure at B.

[0020] 101-cock body, 102-connecting head, 103-telescopic rod, 104-fixed block, 105-mounting frame, 106-rotating ring, 107-driving assembly, 108-threaded rod, 109-fixed head, 110-servo motor, 111-output gear, 112-bolt, 113-rubber sleeve, 114-fixing hole, 115-mounting protrusion, 116-through hole, 117-transmission gear, 118-limiting ring, 119-annular groove, 120-ball, 201-protective shell, 202-first half shell, 203-second half shell, 204-fixing foot. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] First embodiment:

[0023] See also Figures 1 to 3 ,in Figure 1 This is a schematic structural diagram of a downhole petroleum plug valve according to a first embodiment. Figure 2 yes Figure 1 The enlarged view of the local structure at A. Figure 3 It is a schematic diagram of the connection structure between the threaded rod and the rotating ring in the first embodiment.

[0024] The utility model provides a downhole petroleum plug valve: comprising a plug valve body 101, a connector 102, a telescopic rod 103 and a fixing mechanism, wherein the fixing mechanism comprises a fixing block 104, a mounting frame 105, a rotating ring 106, a driving assembly 107, a threaded rod 108 and a fixing head 109, and the driving assembly 107 comprises a servo motor 110 and an output gear 111. The above-mentioned solution solves the problem that the telescopic rod 103 in the existing downhole petroleum plug valve structure resistant to high pressure cannot be fixed after use, and when the staff touches it by mistake, the telescopic rod 103 is easily rotated, thereby causing the inlet and outlet oil speed inside the plug valve to change. It can be understood that the above-mentioned solution can be used in the structure of downhole petroleum plug valves.

[0025] According to the present specific embodiment, the top end of the rotating rod of the plug valve body 101 is provided with the connecting head 102, and the connecting head 102 is located outside the shell of the plug valve body 101. The connecting head 102 is provided with the telescopic rod 103, and the surface of the telescopic rod 103 is threadedly connected with a bolt 112, and the end of the telescopic rod 103 away from the connecting head 102 is sleeved with a rubber sleeve 113. Through the setting of the connecting head 102, a fulcrum can be provided for rotating the plug of the plug valve body 101. Through the setting of the telescopic rod 103, the telescopic rod 103 can be rotated to rotate the plug of the plug valve body 101, thereby achieving the effect of controlling the inflow and outflow of oil. Through the setting of the bolt 112, the length of the telescopic rod 103 can be controlled. By adjusting the length of the telescopic rod 103, effort can be saved to achieve the effect of controlling the inflow and outflow of oil.

[0026] The fixing block 104 is fixedly mounted on the top of the outer shell of the plug valve body 101 and is arranged on the outside of the connecting head 102. A plurality of fixing holes 114 are evenly arranged on the fixing block 104. A mounting protrusion 115 is arranged at one end of the telescopic rod 103 close to the connecting head 102. The mounting frame 105 is arranged at the mounting protrusion 115. The rotating ring 106 is rotatably arranged at the top of the mounting frame 105. The threaded rod 108 is connected to the inner thread of the rotating ring 106. A through hole 116 is penetrated at one end of the telescopic rod 103 close to the connecting head 102. The threaded rod 108 penetrates the through hole 116. The fixing head 109 is arranged at the bottom of the threaded rod 108. The fixing head 109 is adapted to the fixing hole 114. The driving assembly 107 is also arranged at the top of the mounting frame 105. The transmission gear 107 is arranged on the outside of the rotating ring 106. 17. The output end of the driving assembly 107 is mechanically transmitted with the transmission gear 117. After the telescopic rod 103 is rotated, the driving assembly 107 is started. Due to the mechanical transmission between the output end of the driving assembly 107 and the transmission gear 117, the rotating ring 106 is driven to rotate at the top of the mounting bracket 105. Since the internal thread of the rotating ring 106 is connected with the threaded rod 108, the threaded rod 108 is screwed into the rotating ring 106, thereby driving the fixed head 109 to move toward the fixing hole 114 during the rotation process until the fixed head 109 is embedded in the corresponding fixing hole 114, thereby completing the fixation of the position of the telescopic rod 103, avoiding the occurrence of the phenomenon that when the staff accidentally touches the telescopic rod 103, the telescopic rod 103 rotates, thereby causing the oil inlet and outlet speed inside the plug valve body 101 to change.

[0027] Secondly, the servo motor 110 is installed at the top of the mounting frame 105. The output end of the servo motor 110 is provided with the output gear 111. The output gear 111 is meshed with the transmission gear 117. The servo motor 110 is started to drive the output gear 111 to rotate. Since the output gear 111 is meshed with the transmission gear 117, the rotating ring 106 is driven to rotate at the top of the mounting frame 105.

[0028] At the same time, two limiting rings 118 are arranged on the outside of the rotating ring 106, and the two limiting rings 118 are respectively located on the upper and lower surfaces of the top of the mounting frame 105. Through the setting of the two limiting rings 118, the structure of the rotating ring 106 is more stable when it rotates on the mounting frame 105.

[0029] In addition, each of the limiting rings 118 is provided with an annular groove 119 on one side close to the top of the mounting frame 105, and a plurality of balls 120 are provided inside the annular groove 119. Through the setting of the annular groove 119 and the balls 120, the rotating ring 106 can rotate more smoothly when rotating on the mounting frame 105.

[0030] When using a downhole petroleum plug valve of the present embodiment, the connection head 102 is provided to provide a fulcrum for rotating the plug of the plug valve body 101, and the telescopic rod 103 is provided to rotate the telescopic rod 103 so as to rotate the plug of the plug valve body 101, thereby achieving the effect of controlling the inflow and outflow of oil, and the bolt 112 is provided to control the length of the telescopic rod 103, and the length of the telescopic rod 103 is adjusted to save effort, thereby achieving the effect of controlling the inflow and outflow of oil, and after the telescopic rod 103 is rotated, the drive assembly 107 is started, and since the output end of the drive assembly 107 is connected to the transmission gear 117 Mechanical transmission drives the rotating ring 106 to rotate on the top of the mounting bracket 105. Since the internal thread of the rotating ring 106 is connected to the threaded rod 108, the threaded rod 108 is screwed into the rotating ring 106, thereby driving the fixed head 109 to move toward the fixing hole 114 during the rotation process until the fixed head 109 is embedded in the corresponding fixing hole 114, thereby completing the fixation of the position of the telescopic rod 103, avoiding the occurrence of the phenomenon that the telescopic rod 103 rotates when the staff accidentally touches the telescopic rod 103, thereby causing the oil inlet and outlet speed inside the plug valve body 101 to change.

[0031] Second embodiment:

[0032] Based on the first embodiment, please refer to Figure 4 and Figure 5 , Figure 4 This is a schematic structural diagram of a downhole petroleum plug valve according to a second embodiment. Figure 5 for Figure 4 A magnified view of the local structure at B.

[0033] The utility model provides a petroleum downhole plug valve further comprising a protective shell 201 , wherein the protective shell 201 comprises a first half shell 202 and a second half shell 203 .

[0034] According to this specific embodiment, the protective shell 201 is also provided at the top of the mounting frame 105, and the protective shell 201 is arranged on the outside of the output gear 111 and the transmission gear 117. The protective shell 201 is provided with a fixed foot 204 on the side close to the mounting frame 105, and the fixed foot 204 is detachably connected to the top of the mounting frame 105. The output gear 111 and the transmission gear 117 are protected by the protective shell 201 to prevent the external environment from affecting the meshing point of the output gear 111 and the transmission gear 117.

[0035] The first half shell 202 and the second half shell 203 are respectively located on both sides of the output gear 111, and the fixing foot 204 is provided on a side of the first half shell 202 close to the mounting frame 105. The second half shell 203 is detachably connected to the first half shell 202 and is located on a side of the first half shell 202 away from the fixing foot 204. After the first half shell 202 and the second half shell 203 are respectively placed on both sides of the output gear 111, the fixing foot 204 is fixed to the mounting frame 105 by screws, and the second half shell 203 is fixed to the first half shell 202 by screws, thereby completing the installation of the protective shell 201.

[0036] When using a downhole petroleum plug valve of the present embodiment, after placing the first half shell 202 and the second half shell 203 on both sides of the output gear 111 respectively, the fixing foot 204 is fixed to the mounting frame 105 by screws, and the second half shell 203 is fixed to the first half shell 202 by screws, thereby completing the installation of the protective shell 201. The output gear 111 and the transmission gear 117 are protected by the protective shell 201 to prevent the external environment from affecting the meshing portion of the output gear 111 and the transmission gear 117.

[0037] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A petroleum downhole plug valve, comprising a plug valve body, a connector and a telescopic rod, wherein the top end of the rotating rod of the plug valve body is provided with the connector, the connector is located outside the outer shell of the plug valve body, the connector is provided with the telescopic rod, the surface of the telescopic rod is threadedly connected with a bolt, and the end of the telescopic rod away from the connector is sleeved with a rubber sleeve, characterized in that: Also includes a fixing mechanism; The fixing mechanism includes a fixing block, a mounting frame, a rotating ring, a driving assembly, a threaded rod and a fixing head. The fixing block is fixedly mounted on the top end of the outer shell of the plug valve body and is arranged on the outside of the connecting head. A plurality of fixing holes are evenly arranged on the fixing block. A mounting protrusion is arranged at one end of the telescopic rod close to the connecting head, and the mounting frame is arranged at the mounting protrusion. The rotating ring is rotatably arranged on the top end of the mounting frame, and the threaded rod is connected to the internal thread of the rotating ring. A through hole is penetrated at one end of the telescopic rod close to the connecting head, and the threaded rod penetrates the through hole. The fixing head is arranged at the bottom of the threaded rod, and the fixing head is adapted to the fixing hole. The driving assembly is also arranged on the top end of the mounting frame, and a transmission gear is arranged on the outside of the rotating ring. The output end of the driving assembly is mechanically transmitted with the transmission gear.

2. The petroleum downhole plug valve according to claim 1, characterized in that: The driving assembly includes a servo motor and an output gear. The servo motor is mounted on the top of the mounting frame. The output end of the servo motor is provided with the output gear, and the output gear is meshed with the transmission gear.

3. The petroleum downhole plug valve according to claim 2, characterized in that: Two limiting rings are arranged outside the rotating ring, and the two limiting rings are respectively located on the upper and lower surfaces of the top end of the mounting frame.

4. The petroleum downhole plug valve according to claim 3, characterized in that: A side of each of the limiting rings close to the top of the mounting frame is provided with an annular groove, and a plurality of balls are arranged inside the annular groove.

5. The petroleum downhole plug valve according to claim 2, characterized in that: The oil well downhole plug valve also includes a protective shell, and the top of the mounting frame is also provided with the protective shell, and the protective shell is arranged outside the output gear and the transmission gear. A fixed foot is provided on a side of the protective shell close to the mounting frame, and the fixed foot is detachably connected to the top of the mounting frame.

6. The petroleum downhole plug valve according to claim 5, characterized in that: The protective shell includes a first half shell and a second half shell, the first half shell and the second half shell are respectively located on both sides of the output gear, the fixing foot is provided on a side of the first half shell close to the mounting frame, and the second half shell is detachably connected to the first half shell and is located on a side of the first half shell away from the fixing foot.

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