Gas production wellhead sand prevention device

Abstract

The utility model relates to the technical field of gas production, in particular to a sand prevention device for a gas production wellhead, which comprises a first strip-shaped fixing plate, a second strip-shaped fixing plate, a baffle plate, a mounting plate and a mounting frame, and the mounting frame is fixed at the bottom of the first strip-shaped fixing plate and the bottom of the second strip-shaped fixing plate through second bolts. A filter screen is arranged at the bottom of the mounting frame through a mounting groove; sliding grooves are formed in the inner sides of the first strip-shaped fixing plate and the second strip-shaped fixing plate correspondingly, sliding blocks are arranged at the positions, close to the bottom, of the two ends of the baffle correspondingly, the sliding blocks are located in the sliding grooves, an L-shaped plate is arranged at one end of the top of the baffle, and a rack is arranged at the top end of the L-shaped plate. A servo motor is arranged on one side of the top of the second strip-shaped fixing plate through a mounting base, and the power output end of the servo motor is connected with a gear. The baffle can be switched to be in a shielding state or a non-shielding state above the mounting frame according to needs, and the sand prevention function and the rain and snow prevention function are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas production, in particular to a sand prevention device for a gas production wellhead. Background Art

[0002] Gas wellhead sand prevention devices are usually used to prevent the entry of sand and dust into the wellhead to protect wellhead equipment and extend the life of the wellbore.

[0003] Previous anti-sand devices could only block sand and dust, and their functions were relatively simple. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a gas wellhead sand prevention device, which can switch the baffle plate above the installation frame to a shielding or non-shielding state as needed, and has not only a sand prevention function, but also a rain and snow prevention function.

[0005] The technical solution adopted by the utility model to solve the technical problem is a gas wellhead sand prevention device, comprising a first strip fixing plate, a second strip fixing plate, a baffle, a mounting plate and a mounting frame, wherein the mounting frame is fixed to the bottom of the first strip fixing plate and the second strip fixing plate by a second bolt, and a filter screen is arranged at the bottom of the mounting frame through a mounting groove;

[0006] The first strip-shaped fixing plate and the second strip-shaped fixing plate are both provided with sliding grooves on their inner sides, and sliding blocks are provided at both ends of the baffle near the bottom, and the sliding blocks are located in the sliding grooves. An L-shaped plate is provided at one end of the top of the baffle, and a rack is provided at the top of the L-shaped plate. A servo motor is provided at one side of the top of the second strip-shaped fixing plate through a mounting seat, and a gear is connected to the power output end of the servo motor, and the gear is meshed with the rack, and the baffle is located at the upper end of the mounting frame.

[0007] By adopting the above technical solution, the servo motor can easily drive the gear to rotate, so that the L-shaped plate and the rack can move horizontally, so that the baffle and the slider can move along the horizontal direction of the first strip fixed plate and the second strip fixed plate, and then the baffle can be switched to a shielding or non-shielding state above the installation frame as needed, which not only has a sand-proof function, but also a rain and snow-proof function.

[0008] Specifically, a convex plate is provided at one end of the top of the baffle plate near one side, and limiting plates are fixed to both sides of the top of the first strip-shaped fixing plate by first bolts.

[0009] Specifically, connection blocks are arranged at both sides of the mounting plate, a servo motor controller is arranged at the bottom of the mounting plate, and the connection block is mounted on one end of the second strip-shaped fixing plate by screws.

[0010] Specifically, a jack is welded at one side of the bottom of the second strip-shaped fixing plate, and guide sleeves are provided at the other side of the bottom of the second strip-shaped fixing plate and at both sides of the bottom of the first strip-shaped fixing plate, wherein a sleeve rod is sleeved in the guide sleeve.

[0011] By adopting the above technical solution, the height of the device can be conveniently adjusted according to needs through the jack, and the stability of the device during lifting and lowering can be better achieved through the guide sleeve and the sleeve rod.

[0012] Specifically, a support column is provided at one end of the top of the second strip-shaped fixing plate, and a shielding plate is connected to the top of the support column.

[0013] By adopting the above technical solution, the shielding plate can be conveniently fixed by the support column, and the servo motor and the upper end of the gear can be conveniently shielded by the shielding plate.

[0014] Specifically, a weight-reducing groove is formed through one end of the L-shaped plate, and a reinforcing block is arranged between the top and the bottom of the weight-reducing groove.

[0015] Beneficial effects of the utility model:

[0016] (1) In the utility model, a gas wellhead sand prevention device is described, in which a servo motor conveniently drives the gear to rotate, so that the L-shaped plate and the rack can move horizontally, so that the baffle plate and the slider can move along the horizontal direction of the first strip fixing plate and the second strip fixing plate, and then the baffle plate can be switched to a shielding or non-shielding state above the installation frame as needed, so that it not only has a sand prevention function, but also has a rain and snow prevention function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0020] Figure 3 This is a schematic diagram of the weight reduction groove and reinforcement block structure of the utility model.

[0021] In the figure: 1. first strip fixing plate; 2. second strip fixing plate; 3. jack; 4. sleeve rod; 5. guide sleeve; 6. slide groove; 7. baffle; 8. slider; 9. first bolt; 10. limit plate; 11. convex plate; 12. L-shaped plate; 13. rack; 14. servo motor; 15. gear; 16. support column; 17. shield plate; 18. mounting plate; 19. connecting block; 20. servo motor controller; 21. weight reduction groove; 22. reinforcement block; 23. second bolt; 24. mounting frame; 25. filter. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In order to switch the baffle 7 to a shielding or non-shielding state above the mounting frame 24 as required, the baffle 7 can have a rain and snow protection function in addition to having a sand protection function. Figure 1-3 As shown, a gas wellhead sand prevention device according to the utility model comprises a first strip-shaped fixing plate 1, a second strip-shaped fixing plate 2, a baffle 7, a mounting plate 18 and a mounting frame 24, wherein the mounting frame 24 is fixed to the bottom of the first strip-shaped fixing plate 1 and the second strip-shaped fixing plate 2 by a second bolt 23, and a filter screen 25 is arranged at the bottom of the mounting frame 24 through a mounting groove;

[0024] The first strip-shaped fixing plate 1 and the second strip-shaped fixing plate 2 are both provided with a slide groove 6 on their inner sides, and sliders 8 are provided at both ends of the baffle plate 7 near the bottom, and the sliders 8 are located in the slide groove 6. An L-shaped plate 12 is provided at one end of the top of the baffle plate 7, and a rack 13 is provided at the top of the L-shaped plate 12. A servo motor 14 is provided at one side of the top of the second strip-shaped fixing plate 2 through a mounting seat, and a gear 15 is connected to the power output end of the servo motor 14, and the gear 15 is meshed with the rack 13. The baffle plate 7 is located at the upper end of the mounting frame 24.

[0025] When in use, the servo motor 14 conveniently drives the gear 15 to rotate, so that the L-shaped plate 12 and the rack 13 can move horizontally, so that the baffle 7 and the slider 8 can move in the horizontal direction of the first strip fixing plate 1 and the second strip fixing plate 2, and then the baffle 7 can be switched to a shielding or non-shielding state above the mounting frame 24 as needed, which not only has a sand-proof function, but also has a rain and snow-proof function.

[0026] For example, Figure 1-2 As shown, the utility model also includes that a convex plate 11 is provided near one side of the top end of the baffle 7 , and limiting plates 10 are fixed to both sides of the top of the first strip-shaped fixing plate 1 by first bolts 9 .

[0027] When in use, the position of the baffle 7 during horizontal displacement can be limited by the limiting effect of the limiting plate 10 on the convex plate 11 .

[0028] For example, Figure 1-2 As shown, the utility model also includes that connecting blocks 19 are arranged at both sides of the mounting plate 18, a servo motor controller 20 is arranged at the bottom of the mounting plate 18, and the connecting block 19 is installed on one end of the second strip fixing plate 2 by screws.

[0029] When in use, the operation of the servo motor 14 is conveniently controlled by the servo motor controller 20 .

[0030] For example, Figure 1-2 As shown, the utility model also includes that a jack 3 is welded at one side of the bottom of the second strip fixing plate 2, and guide sleeves 5 are provided at the other side of the bottom of the second strip fixing plate 2 and both sides of the bottom of the first strip fixing plate 1, and a sleeve rod 4 is sleeved in the guide sleeve 5.

[0031] When in use, the height of the device can be adjusted as needed through the jack 3, and the guide sleeve 5 and the sleeve rod 4 can make the device more stable when being lifted or lowered.

[0032] For example, Figure 1-2 As shown, the utility model also includes that a support column 16 is provided at one end of the top of the second strip-shaped fixing plate 2 , and a shielding plate 17 is connected to the top of the support column 16 .

[0033] When in use, the shielding plate 17 is conveniently fixed by the support column 16 , and the shielding plate 17 is conveniently used to shield the servo motor 14 and the upper end of the gear 15 .

[0034] For example, Figure 1-3 As shown, the utility model further includes that a weight-reducing groove 21 is formed through one end of the L-shaped plate 12 , and a reinforcing block 22 is provided between the top and the bottom of the weight-reducing groove 21 .

[0035] When in use, the weight-reducing grooves 21 can effectively reduce the overall weight of the L-shaped plate 12 .

[0036] When the utility model is in use, the height of the device can be adjusted conveniently by the jack 3 according to the needs, and the guide sleeve 5 and the sleeve rod 4 can make the device more stable when it is lifted and lowered. The filter screen 25 in the installation frame 24 can play a good anti-sand effect on the gas wellhead when the device is arranged above the gas well.

[0037] The servo motor controller 20 is used to conveniently control the operation of the servo motor 14, and the servo motor 14 conveniently drives the gear 15 to rotate, so that the L-shaped plate 12 and the rack 13 can move horizontally, so that the baffle 7 and the slider 8 can move in the horizontal direction of the first strip fixing plate 1 and the second strip fixing plate 2, and then the baffle 7 can be switched to a shielding or non-shielding state above the installation frame 24 as needed, so that the sand prevention device not only has a sand prevention function, but also has a rain and snow prevention function.

[0038] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas wellhead sand prevention device, characterized in that: The invention comprises a first strip-shaped fixing plate (1), a second strip-shaped fixing plate (2), a baffle (7), a mounting plate (18) and a mounting frame (24); the mounting frame (24) is fixed to the bottom of the first strip-shaped fixing plate (1) and the second strip-shaped fixing plate (2) by means of a second bolt (23); and a filter screen (25) is arranged at the bottom of the mounting frame (24) through a mounting groove; The first strip-shaped fixed plate (1) and the second strip-shaped fixed plate (2) are both provided with a slide groove (6) on their inner sides; sliders (8) are provided at both ends of the baffle plate (7) near the bottom; the sliders (8) are located in the slide groove (6); an L-shaped plate (12) is provided at one end of the top of the baffle plate (7); a rack (13) is provided at the top of the L-shaped plate (12); a servo motor (14) is provided at one side of the top of the second strip-shaped fixed plate (2) through a mounting seat; a gear (15) is connected to the power output end of the servo motor (14); the gear (15) is meshed with the rack (13); and the baffle plate (7) is located at the upper end of the mounting frame (24).

2. A gas wellhead sand prevention device according to claim 1, characterized in that: A convex plate (11) is provided near one side of one end of the top of the baffle (7), and limiting plates (10) are fixed to both sides of the top of the first strip-shaped fixing plate (1) by first bolts (9).

3. A gas wellhead sand prevention device according to claim 1, characterized in that: Connecting blocks (19) are arranged on both sides of the mounting plate (18), a servo motor controller (20) is arranged at the bottom of the mounting plate (18), and the connecting block (19) is mounted on one end of the second strip-shaped fixing plate (2) by means of screws.

4. A gas wellhead sand prevention device according to claim 1, characterized in that: A jack (3) is welded to one side of the bottom of the second strip-shaped fixing plate (2), and guide sleeves (5) are provided on the other side of the bottom of the second strip-shaped fixing plate (2) and on both sides of the bottom of the first strip-shaped fixing plate (1), wherein a sleeve rod (4) is sleeved inside the guide sleeve (5).

5. A gas wellhead sand prevention device according to claim 1, characterized in that: A support column (16) is provided at one end of the top of the second strip-shaped fixing plate (2), and a shielding plate (17) is connected to the top of the support column (16).

6. A gas wellhead sand prevention device according to claim 1, characterized in that: A weight-reducing groove (21) is formed through one end of the L-shaped plate (12), and a reinforcing block (22) is arranged between the top and bottom of the weight-reducing groove (21).

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