Fixed throttle valve for well drilling

Abstract

The utility model discloses a well drilling fixed throttle valve which comprises a valve body, a pipeline is fixedly connected to the lower portion of the valve body, a water inlet is formed in the left end of the pipeline, a water outlet is formed in the right end of the pipeline, a rotating disc is arranged at the top end of the valve body, a rectangular groove is formed in a rotating shaft of the rotating disc, and the rectangular groove is communicated with the rotating shaft. The rectangular groove is slidably connected with an auxiliary telescopic rod, a filter box is arranged on the left side of the pipeline, and the filter box is connected with a storage box through a filter structure. The throttle valve has the advantages that when the throttle valve needs to be opened, the telescopic pipe can be extended, the strength of the auxiliary telescopic rod can be enhanced through the lantern ring and the connecting rod, and by increasing a force arm, the valve can be rotated and opened more easily, and more labor is saved during rotation; and blockage in the filter screen and the throttle valve is greatly avoided, so that the valve is opened more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a drilling fixed throttle valve. Background Art

[0002] The drilling fixed throttle valve is a kind of drilling fixed throttle valve safety equipment used for drilling wellheads. It is a device that can control the wellhead pressure. It adjusts the size and stability of the pressure by opening and closing the valve to ensure the smooth progress of the drilling operation. Its main function is to prevent the well pressure from getting out of control and avoid oil and gas blowouts, thereby ensuring the safety of drilling. The drilling fixed throttle valve is usually composed of valves, sealing elements, control systems, etc. The valve is the core component of the throttle valve, and its switch state is crucial to the control of the wellhead pressure. The drilling fixed throttle valve is widely used in drilling operations. It is not only suitable for oil wells and gas wells, but also can be used for different types of wellhead throttling control such as water wells.

[0003] Conventional drilling fixed throttle valves are connected to pipelines to control the flow of water or other liquids. However, drilling throttle valves are generally placed in the well or outside. After long-term contact with air, water vapor, etc., the turntable on the valve is prone to rust and is difficult to turn. In addition, there are many impurities in the unpurified liquid, which will cause internal blockage of the throttle valve, making it more difficult to open the valve. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a drilling fixed throttle valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A drilling fixed throttle valve, comprising a valve body, a pipeline is fixedly connected to the bottom of the valve body, a water inlet is arranged at the left end of the pipeline, a water outlet is arranged at the right end of the pipeline, a turntable is arranged at the top of the valve body, a rectangular groove is opened on the rotating shaft of the turntable, an auxiliary telescopic rod is slidably connected to the rectangular groove, a filter box is arranged on the left side of the pipeline, the filter box is connected to a storage box through a filter structure, the auxiliary telescopic rod comprises a connecting ring, a rectangular block, a sleeve, a telescopic tube, a slide groove, an adapter block, a sleeve, a connecting rod, and a bolt, the connecting ring slides with the rotating shaft of the turntable The rectangular block is fixedly connected to the inner wall of the connecting ring, the sleeve is fixedly connected to the outer wall of the connecting ring, the telescopic tube is slidably connected to the inner wall of the sleeve, the slide groove is arranged on the inner wall of the sleeve, the adapter block is fixedly connected to the outer wall of one end of the telescopic tube, the sleeve is respectively slidably connected to the outer walls of the sleeve and the telescopic tube, the connecting rod is fixedly connected to the outer wall of the sleeve, the bolt is threadedly connected to the sleeve, the adapter block is slidably connected to the inner wall of the slide groove, the slide groove does not pass through the inner wall of the sleeve, and one end of the bolt is respectively abutted against the outer wall of the sleeve and the outer wall of the telescopic tube.

[0007] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the filtering structure includes evenly distributed semicircular blocks, semicircular grooves, sliding holes, limiting protrusions, springs, limiting holes, and filter nets, the semicircular blocks are fixedly connected to both sides of the inner wall of the filter box, the semicircular grooves are arranged on the outer wall of the storage box, the filter net is fixedly connected to the inner wall of the storage box, the semicircular blocks are slidably connected to the semicircular grooves, the sliding holes are arranged on the inner wall of the filter box, the limiting protrusions are slidably connected to the inner wall of the sliding holes, one end of the spring is fixedly connected to the inner wall of the sliding hole, the other end of the spring is fixedly connected to the outer wall of the limiting protrusions, the spring is sleeved on the outer wall of the limiting protrusions, the limiting holes are arranged on the outer wall of the storage box, and the limiting protrusions are slidably connected to the limiting holes.

[0008] The advantages of the utility model are: by means of the auxiliary telescopic rod arranged on the turntable, when the throttle valve needs to be opened, the telescopic tube can be extended and the strength of the auxiliary telescopic rod can be enhanced by means of the sleeve ring and the connecting rod, thereby increasing the force arm, making it easier to rotate and open the valve, and saving more effort when rotating; by means of the filter box and the storage box arranged on the pipeline, not only can impurities in the liquid be filtered, but the storage box can also be easily taken out for cleaning, thus greatly avoiding blockage of the filter screen and the inside of the throttle valve, making it easier to open the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a three-dimensional structural schematic diagram of a drilling fixed throttle valve proposed by the utility model;

[0010] Figure 2This is a schematic diagram of the internal three-dimensional structure of a filter box and a storage box of a drilling fixed throttle valve proposed by the utility model;

[0011] Figure 3 This is an enlarged view of the structure A of a drilling fixed throttle valve proposed by the utility model;

[0012] Figure 4 This is a schematic diagram of the three-dimensional structure of an auxiliary telescopic rod of a drilling fixed throttle valve proposed by the utility model;

[0013] Figure 5 The utility model is a partial cross-sectional view of an auxiliary telescopic rod of a drilling fixed throttle valve.

[0014] In the figure: 1 valve body, 2 pipe, 3 water inlet, 4 water outlet, 5 turntable, 6 rectangular groove, 7 auxiliary telescopic rod, 8 filter box, 9 storage box, 10 connecting ring, 11 rectangular block, 12 sleeve, 13 telescopic tube, 14 slide, 15 adapter block, 16 sleeve, 17 connecting rod, 18 bolt, 19 semicircular block, 20 semicircular groove, 21 slide hole, 22 limit protrusion, 23 spring, 24 limit hole, 25 filter screen. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0016] Reference Figure 1-Figure 5As shown, a drilling fixed throttle valve comprises a valve body 1, a pipe 2 is fixedly connected to the bottom of the valve body 1, a water inlet 3 is arranged at the left end of the pipe 2, a water outlet 4 is arranged at the right end of the pipe 2, a turntable 5 is arranged at the top of the valve body 1, a rectangular groove 6 is opened on the rotating shaft of the turntable 5, an auxiliary telescopic rod 7 is slidably connected to the rectangular groove 6, a filter box 8 is arranged on the left side of the pipe 2, the filter box 8 is connected to a storage box 9 through a filter structure, and the auxiliary telescopic rod 7 comprises a connecting ring 10, a rectangular block 11, a sleeve 12, a telescopic The connecting ring 10 is connected to the rotating shaft of the rotating disk 5 in a sliding manner, the rectangular block 11 is fixedly connected to the inner wall of the connecting ring 10, and the rectangular block 11 is connected to the rectangular groove 6, so that when the connecting ring 10 drives the rotating disk 5 to rotate, it is affected by the rectangular block 11 and the rectangular groove 6, and the thread slipping phenomenon will not occur during rotation. The sleeve 12 is fixedly connected to the outer wall of the connecting ring 10, the telescopic tube 13 is connected to the inner wall of the sleeve 12 in a sliding manner, and the slide groove 14 is provided. The adapter block 15 is placed on the inner wall of the sleeve 12, and the outer wall of one end of the telescopic tube 13 is fixedly connected. The collar 16 is slidably connected to the outer walls of the sleeve 12 and the telescopic tube 13 respectively. The connecting rod 17 is fixedly connected to the outer wall of the collar 16, and the bolt 18 is threadedly connected to the collar 16. The auxiliary telescopic rod 7 is connected to the rotating shaft of the turntable 5 through the connecting ring 10, and then the telescopic tube 13 is pulled outward to extend until the adapter block 15 reaches the farthest point of the slide groove 14, and then the collar 16 and the connecting rod 17 are moved. The auxiliary supporting structure moves to the middle end of the sleeve 12 and the telescopic tube 13, and then the bolt 18 is rotated so that the bolt 18 abuts against the outer walls of the sleeve 12 and the telescopic tube 13, restricting the ring 16 and preventing it from moving. The adapter block 15 is slidably connected to the inner wall of the slide groove 14, and the slide groove 14 does not pass through the inner wall of the sleeve 12. One end of the bolt 18 abuts against the outer wall of the sleeve 12 and the outer wall of the telescopic tube 13, and the inner ring thickness of the ring 16 is adapted to the outer wall thickness of the sleeve 12 and the telescopic tube 13.

[0017] The filtering structure includes uniformly distributed semicircular blocks 19, semicircular grooves 20, sliding holes 21, limiting protrusions 22, springs 23, limiting holes 24, and filter screens 25. The semicircular blocks 19 are fixedly connected to both sides of the inner wall of the filter box 8. The semicircular grooves 20 are arranged on the outer wall of the storage box 9. The filter screen 25 is fixedly connected to the inner wall of the storage box 9. The semicircular blocks 19 are slidably connected to the semicircular grooves 20. A fixed block is provided at the top of the storage box 9. Arc grooves are provided on the outer walls of the fixed block, so that the storage box 9 is more convenient to be pulled out. The sliding holes 21 are arranged at On the inner wall of the filter box 8, the limiting protrusion 22 is slidably connected to the inner wall of the sliding hole 21, one end of the spring 23 is fixedly connected to the inner wall of the sliding hole 21, and the other end of the spring 23 is fixedly connected to the outer wall of the limiting protrusion 22. The spring 23 is sleeved on the outer wall of the limiting protrusion 22, and the limiting hole 24 is arranged on the outer wall of the storage box 9. The limiting protrusion 22 is slidably connected to the limiting hole 24. A notch is provided on the outer wall of one side of the storage box 9, so that the liquid can pass through the storage box 9 and contact the filter net 25, and the filtered impurities can remain in the storage box 9.

[0018] When in use, the filter box 8 arranged on the left side of the pipe 2 can filter the flowing liquid to prevent impurities from entering the valve body 1 and causing the valve body 1 to be blocked. When the impurities need to be cleaned, the limiting protrusion 22 can be manually moved to make the limiting protrusion 22 move outward, and the limiting protrusion 22 leaves the position of the limiting hole 24, and then the storage box 9 is taken out for cleaning, and then the semicircular groove 20 on the storage box 9 is aligned with the semicircular block 19 and inserted. Under the action of the spring 23, the limiting protrusion 22 returns to its original position and is reinserted into the limiting hole 24 to complete the limiting. Then, when the valve body 1 needs to be opened, the telescopic tube 13 can be pulled to extend outward. Length, until the adapter block 15 reaches the farthest point of the slide groove 14, then move the auxiliary support structure composed of the collar 16 and the connecting rod 17 to the middle end of the sleeve 12 and the telescopic tube 13, and then rotate the bolt 18 so that the bolt 18 abuts against the outer wall of the sleeve 12 and the telescopic tube 13, restricting the collar 16 and preventing it from moving, and then manually rotate the auxiliary telescopic rod 7. The longer force arm makes it easier to open the valve, thereby making it easier to rotate and open the valve, saving more effort when rotating, and greatly avoiding the blockage of the filter screen and the inside of the throttle valve, making it easier to open the valve.

Claims

1. A drilling fixed throttle valve, comprising a valve body (1), characterized in that: A pipe (2) is fixedly connected to the bottom of the valve body (1); a water inlet (3) is provided at the left end of the pipe (2); a water outlet (4) is provided at the right end of the pipe (2); a turntable (5) is provided at the top of the valve body (1); a rectangular groove (6) is provided on the rotating shaft of the turntable (5); an auxiliary telescopic rod (7) is slidably connected to the rectangular groove (6); a filter box (8) is provided on the left side of the pipe (2); the filter box (8) is connected to a storage box (9) via a filter structure; the auxiliary telescopic rod (7) comprises a connecting ring (10), a rectangular block (11), a sleeve (12), a telescopic tube (13), a slide groove (14), an adapter block (15), a sleeve ring (16), a connecting rod (17), and a bolt (18); the connecting ring (10) is slidably connected to the rotating shaft of the turntable (5); the rectangular block ( The sleeve (12) is fixedly connected to the inner wall of the connecting ring (10), the sleeve (12) is fixedly connected to the outer wall of the connecting ring (10), the telescopic tube (13) is slidably connected to the inner wall of the sleeve (12), the slide groove (14) is arranged on the inner wall of the sleeve (12), the adapter block (15) is fixedly connected to the outer wall of one end of the telescopic tube (13), the collar (16) is slidably connected to the outer walls of the sleeve (12) and the telescopic tube (13), the connecting rod (17) is fixedly connected to the outer wall of the collar (16), the bolt (18) is threadedly connected to the collar (16), the adapter block (15) is slidably connected to the inner wall of the slide groove (14), the slide groove (14) does not penetrate the inner wall of the sleeve (12), and one end of the bolt (18) is respectively abutted against the outer wall of the sleeve (12) and the outer wall of the telescopic tube (13).

2. A drilling fixed throttle valve according to claim 1, characterized in that: The filtering structure comprises uniformly distributed semicircular blocks (19), semicircular grooves (20), sliding holes (21), limiting protrusions (22), springs (23), limiting holes (24), and a filter screen (25); the semicircular blocks (19) are fixedly connected to both sides of the inner wall of the filter box (8); the semicircular grooves (20) are arranged on the outer wall of the storage box (9); the filter screen (25) is fixedly connected to the inner wall of the storage box (9); the semicircular blocks (19) are slidably connected to the semicircular grooves (20); the sliding holes (21) are fixedly connected to the inner wall of the storage box (9); (21) is arranged on the inner wall of the filter box (8), the limiting protrusion (22) is slidably connected to the inner wall of the sliding hole (21), one end of the spring (23) is fixedly connected to the inner wall of the sliding hole (21), the other end of the spring (23) is fixedly connected to the outer wall of the limiting protrusion (22), the spring (23) is sleeved on the outer wall of the limiting protrusion (22), the limiting hole (24) is arranged on the outer wall of the storage box (9), and the limiting protrusion (22) is slidably connected to the limiting hole (24).

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