An adjustable exhaust valve for deep wells in oil extraction

Abstract

The present invention provides an adjustable exhaust valve for deep wells in oil extraction, which relates to the technical field of oil extraction and includes an exhaust unit; the adjustable sealing cover is threadedly connected inside the exhaust valve body, and two conical exhaust holes are provided on the adjustable sealing cover; two groups of auxiliary units are installed inside the adjustable sealing cover, and the two groups of auxiliary units are used to seal the two conical exhaust holes on the adjustable sealing cover; an adjustment unit is installed on the adjustable sealing cover, and the adjustment unit is used to adjust the exhaust pressure; a dispersion unit is installed on the adjustable sealing cover and the circular adjustment block, and the dispersion unit is used to disperse the exhausted gas; in the present invention, when one of the switches is in a pressed state, the alarm works, which is convenient for reminding the staff to add lubricating oil between the exhaust valve body and the adjustable sealing cover; it solves the problem that when the exhaust valve needs maintenance, it cannot automatically give a reminder when adjusting the exhaust valve, which is not conducive to the timely maintenance of the exhaust valve and affects the service life of the exhaust valve.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil extraction, and more specifically, particularly relates to an adjustable exhaust valve for deep wells in oil extraction. Background Art

[0002] ‌Oil extraction‌ refers to the act of excavating and extracting oil in places where oil is stored; the exhaust valve can smoothly discharge the gas in the oil well, ensure the normal flow of the gas inside the oil well, and avoid situations such as pipeline blockage caused by gas accumulation or damage to the wellhead equipment due to excessive air pressure.

[0003] The currently used exhaust valves still have the following problems: 1. When the exhaust valve needs maintenance, it cannot automatically give a reminder when adjusting the exhaust valve, which is not conducive to the timely maintenance of the exhaust valve and affects the service life of the exhaust valve; 2. When maintaining the exhaust valve, the gas in the exhaust valve will still be discharged, increasing the safety hazard, and it cannot automatically prevent the gas from being discharged when maintaining the exhaust valve. Summary of the Invention

[0004] The embodiments of the present disclosure relate to an adjustable exhaust valve for deep wells in oil extraction, which has an exhaust unit, an auxiliary unit, an adjustment unit, a reminder unit, and a dispersion unit; when one of the switches is in a pressed state, the alarm works, facilitating reminding the staff to add lubricating oil between the exhaust valve body and the adjustable sealing cover; when the tops of the two limit retaining rings contact the bottoms of the two cross-shaped mounting frames, the outer walls of the two movable sealing plates contact the adjustable sealing cover, ensuring that no gas will be discharged when the staff adds lubricating oil, improving the safety during maintenance; solving the problems of being not conducive to the timely maintenance of the exhaust valve and the gas in the exhaust valve still being discharged when maintaining the exhaust valve.

[0005] In the first aspect of the present disclosure, an adjustable exhaust valve for deep wells in oil extraction is provided, including: an exhaust unit; the exhaust unit includes: an exhaust valve body and an adjustable sealing cover; the adjustable sealing cover is threadedly connected inside the exhaust valve body, and two conical exhaust holes are provided on the adjustable sealing cover; two groups of auxiliary units are installed inside the adjustable sealing cover, and the two groups of auxiliary units are used to seal the two conical exhaust holes on the adjustable sealing cover;

[0006] The adjustable sealing cover is provided with an adjustment unit for adjusting the exhaust pressure; the adjustment unit includes: a circular adjustment block, a rectangular limit block A, and a rectangular limit block B; the circular adjustment block is rotatably installed on the adjustable sealing cover; the rectangular limit block A is fixedly installed outside the circular adjustment block; the rectangular limit block B is fixedly installed outside the circular adjustment block; a reminder unit is installed on the exhaust valve body and the rectangular limit block B; a dispersion unit is installed on the adjustable sealing cover and the circular adjustment block, and the dispersion unit is used to disperse the discharged gas;

[0007] The dispersion unit includes: a circular hollow tube; there are two circular hollow tubes in total, and the two circular hollow tubes are slidably installed on the adjustable seal cover.

[0008] In at least some embodiments, the exhaust unit further includes: a circular movable shaft; there are two circular movable shafts in total, and the two circular movable shafts are slidably installed on the adjustable seal cover.

[0009] In at least some embodiments, the exhaust unit further includes: a movable sphere and a support spring A; the movable sphere is fixedly installed at the bottom of the two circular movable shafts, and the bottom of the movable sphere contacts the inner wall of the exhaust valve body; there are two support springs A in total, and the two support springs A are sleeved outside the two circular movable shafts, and the two support springs A are located between the adjustable seal cover and the movable sphere.

[0010] In at least some embodiments, the auxiliary unit includes: a cross mounting frame, a circular guiding shaft, and a movable sealing plate; the cross mounting frame is fixedly installed inside the adjustable seal cover; the circular guiding shaft is slidably installed on the cross mounting frame; the movable sealing plate is fixedly installed at the top of the circular guiding shaft.

[0011] In at least some embodiments, the auxiliary unit further includes: a limit retaining ring and a support spring B; the limit retaining ring is fixedly installed at the bottom end of the circular guiding shaft; when the top of the limit retaining ring contacts the bottom of the cross mounting frame, the outer wall of the movable sealing plate contacts the adjustable seal cover; the support spring B is sleeved outside the circular guiding shaft, and the support spring B is located between the cross mounting frame and the movable sealing plate.

[0012] In at least some embodiments, the rectangular limit block A is slidably connected to the adjustable seal cover, and the rectangular limit block B is slidably connected to the adjustable seal cover.

[0013] In at least some embodiments, the adjustment unit further includes: an arc-shaped mounting rod, a support bending spring A, and a support bending spring B; the arc-shaped mounting rod is fixedly installed on the adjustable seal cover, and the arc-shaped mounting rod is also slidably connected to the rectangular limit block A; the support bending spring A is sleeved outside the arc-shaped mounting rod; the support bending spring B is sleeved outside the arc-shaped mounting rod, and the elastic force of the support bending spring B is less than the elastic force of the support bending spring A.

[0014] In at least some embodiments, the prompting unit includes: a lithium battery, an alarm, and a switch; the lithium battery is fixedly installed on the exhaust valve body; the alarm is fixedly installed on the exhaust valve body, and the alarm is also electrically connected to the lithium battery; there are two switches in total, and the two switches are fixedly installed inside the rectangular limit block B, and the two switches are respectively electrically connected to the lithium battery and the alarm; when one of the switches is in a pressed state, the alarm works.

[0015] In at least some embodiments, the dispersion unit further includes: a conical air collecting hood; the bottoms of the two circular hollow tubes are in contact with the tops of the two movable sealing plates, and the two circular hollow tubes are concentric with the two movable sealing plates, and a circle of exhaust round holes are respectively opened at the bottom ends of the two circular hollow tubes; the conical air collecting hood is fixedly installed on the tops of the two circular hollow tubes, and a circle of exhaust slot holes are opened at the top of the conical air collecting hood.

[0016] In at least some embodiments, the dispersion unit further includes: a connection knob and a movable auxiliary cover; the connection knob is rotatably installed on the conical air collecting hood, and the bottom of the connection knob is also threadedly connected to the circular adjustment block; the movable auxiliary cover is installed outside the conical air collecting hood, and the inner wall of the movable auxiliary cover is in contact with the outer wall of the conical air collecting hood.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the gas pressure generated during oil extraction is greater than the preset range in the present invention, the gas generated during oil extraction can push the movable sphere to move upward automatically, so that the gas flows through the gap between the movable sphere and the exhaust valve body, realizing automatic exhaust; when the gas pressure generated during oil extraction is less than the preset range, the movable sphere automatically resets downward under the action of gravity and the two support springs A.

[0019] 2. It is convenient for the staff to rotate the circular adjustment block with a hex wrench. The settings of the rectangular limit block A and the rectangular limit block B limit the circular adjustment block, so that the circular adjustment block can only rotate;

[0020] In addition, when the staff rotates the circular adjustment block clockwise with a wrench, the support bending spring A is compressed. When the elastic force after the compression of the support bending spring A is greater than the friction force between the exhaust valve body and the adjustable sealing cover, the adjustable sealing cover moves downward; when the staff rotates the circular adjustment block counterclockwise with a wrench, the support bending spring B is compressed. When the elastic force after the compression of the support bending spring B is greater than the friction force between the exhaust valve body and the adjustable sealing cover, the adjustable sealing cover moves upward, which is convenient for the staff to make appropriate adjustments according to the actual situation; the extra elastic force of the support bending spring A can overcome the extra friction force caused by the support spring A, ensuring that the elastic force given by the support bending spring A when the adjustable sealing cover rotates clockwise is basically the same as the elastic force given by the support bending spring B when the adjustable sealing cover rotates counterclockwise;

[0021] In addition, when the friction force between the exhaust valve body and the adjustable sealing cover is large, and the adjustable sealing cover rotates clockwise or counterclockwise, the adjustable sealing cover can press the corresponding switch. When one of the switches is in the pressed state, the alarm works, which is convenient to remind the staff to add lubricating oil between the exhaust valve body and the adjustable sealing cover.

[0022] 3. When the two circular hollow tubes are separated from the adjustable sealing cover in the present invention, the two movable sealing plates automatically move upward under the action of the two support springs B. When the tops of the two limit retaining rings contact the bottoms of the two cross mounting frames, the outer walls of the two movable sealing plates contact the adjustable sealing cover, ensuring that no gas is discharged when the staff adds lubricating oil and improving the safety during maintenance; when the staff slidably mounts the two circular hollow tubes on the adjustable sealing cover and connects the bottom of the connection knob to the circular adjusting block, the two circular hollow tubes push the two movable sealing plates to automatically move downward, and the gas in the exhaust valve body flows through the gap between the two movable sealing plates and the adjustable sealing cover, then enters the conical air collecting cover through the two circles of exhaust round holes and the two circular hollow tubes, and is then discharged through a circle of exhaust slot holes, which disperses the gas in the exhaust valve body, avoids the accumulation of oil and gas, and prevents safety accidents such as explosion;

[0023] In addition, when the staff rotates the connection knob, the staff needs to press the movable auxiliary cover forcefully to ensure that the two circular hollow tubes are slidably mounted on the adjustable sealing cover. At this time, the movable auxiliary cover seals a circle of exhaust slot holes, ensuring that no gas is discharged when the staff rotates the connection knob and improving the safety during maintenance; when the connection knob is connected to the circular adjusting block and the staff's hand is separated from the movable auxiliary cover, under the action of the gas pressure in a circle of exhaust slot holes, the movable auxiliary cover can be pushed to automatically move upward, so that the gas in a circle of exhaust slot holes is discharged through the gap between the conical air collecting cover and the movable auxiliary cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0025] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0026] In the drawings:

[0027] Figure 1 The three-dimensional structural schematic diagram of the present invention is shown;

[0028] Figure 2 The Figure 1 transverse central sectional structural schematic diagram of the present invention is shown;

[0029] Figure 3 The structural schematic diagram of the exhaust unit of the present invention is shown;

[0030] Figure 4 The Figure 3 local enlarged structural schematic diagram of area A in the present invention is shown;

[0031] Figure 5 Shows a schematic structural diagram of the adjustable seal cover and the adjustment unit of the present invention;

[0032] Figure 6 Shows the present invention Figure 5 Schematic structural diagram of the rear side view;

[0033] Figure 7 Shows the present invention Figure 2 Schematic cross-sectional structure diagram in the B-B direction in the present invention;

[0034] Figure 8 Shows the present invention Figure 7 Schematic diagram of the enlarged partial structure of area C in the present invention;

[0035] Figure 9 Shows the schematic structural diagram of the dispersion unit of the present invention;

[0036] Figure 10 Shows the present invention Figure 1 Schematic longitudinal center cross-sectional structure diagram;

[0037] Figure 11 Shows the present invention Figure 10 Schematic diagram of the enlarged partial structure of area D in the present invention;

[0038] Figure 12 Shows the present invention Figure 2 Schematic diagram of the enlarged partial structure of area E in the present invention.

[0039] List of reference numerals:

[0040] 101, exhaust valve body; 102, adjustable seal cover; 103, circular movable shaft; 104, movable sphere; 105, support spring A;

[0041] 201, cross mounting frame; 202, circular guide shaft; 203, movable sealing plate; 204, limit retaining ring; 205, support spring B;

[0042] 301, circular adjustment block; 302, rectangular limit block A; 303, rectangular limit block B; 304, arc mounting rod; 305, support bending spring A; 306, support bending spring B;

[0043] 401, lithium battery; 402, alarm; 403, switch;

[0044] 501, circular hollow tube; 5011, exhaust round hole; 502, conical air collecting cover; 5021, exhaust slot hole; 503, connection knob; 504, movable auxiliary cover. Detailed implementation manners

[0045] To make the objectives, solutions, and advantages of the technical solution of the present invention clearer, the following will clearly and completely describe the technical solution of the embodiments of the present invention with reference to the accompanying drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0046] Embodiment: Please refer to Figures 1 to 12 as shown in the figure: The present invention provides an adjustable exhaust valve for deep wells in oil extraction, including: an exhaust unit; the exhaust unit includes: an exhaust valve body 101 and an adjustable sealing cover 102; the adjustable sealing cover 102 is threadedly connected inside the exhaust valve body 101, and two conical exhaust holes are provided on the adjustable sealing cover 102; two groups of auxiliary units are installed inside the adjustable sealing cover 102, and the two groups of auxiliary units are used to seal the two conical exhaust holes on the adjustable sealing cover 102;

[0047] An adjustment unit is installed on the adjustable sealing cover 102, and the adjustment unit is used to adjust the exhaust pressure; the adjustment unit includes: a circular adjustment block 301, a rectangular limit block A 302, and a rectangular limit block B 303; the circular adjustment block 301 is rotatably installed on the adjustable sealing cover 102; the rectangular limit block A 302 is fixedly installed outside the circular adjustment block 301; the rectangular limit block B 303 is fixedly installed outside the circular adjustment block 301; a prompting unit is installed on the exhaust valve body 101 and the rectangular limit block B 303; a dispersing unit is installed on the adjustable sealing cover 102 and the circular adjustment block 301, and the dispersing unit is used to disperse the exhausted gas;

[0048] The dispersing unit includes: a circular hollow tube 501; there are two circular hollow tubes 501 in total, and the two circular hollow tubes 501 are slidably installed on the adjustable sealing cover 102.

[0049] In the embodiments of the present disclosure, as Figure 2 and Figure 3 shown in the figure, the exhaust unit further includes: a circular movable shaft 103; there are two circular movable shafts 103 in total, and the two circular movable shafts 103 are slidably installed on the adjustable sealing cover 102; the exhaust unit further includes: a movable sphere 104 and a support spring A 105; the movable sphere 104 is fixedly installed at the bottom of the two circular movable shafts 103, and the bottom of the movable sphere 104 contacts the inner wall of the exhaust valve body 101; there are two support springs A 105 in total, and the two support springs A 105 are sleeved outside the two circular movable shafts 103, and the two support springs A 105 are located between the adjustable sealing cover 102 and the movable sphere 104;

[0050] Its specific function is as follows: Since the movable sphere 104 is fixedly installed at the bottom of the two circular movable shafts 103, and the bottom of the movable sphere 104 contacts the inner wall of the exhaust valve body 101, and the two support springs A105 are located between the adjustable seal cover 102 and the movable sphere 104. When the gas pressure generated during oil extraction is greater than the preset range, the gas generated during oil extraction can push the movable sphere 104 to move upward automatically, enabling the gas to flow through the gap between the movable sphere 104 and the exhaust valve body 101, achieving automatic exhaust; when the gas pressure generated during oil extraction is less than the preset range, the movable sphere 104 automatically resets downward under the action of gravity and the two support springs A105.

[0051] In the embodiment of the present disclosure, as Figure 1 , Figure 5 , Figure 6 and Figure 8 shown, the rectangular limit block A302 is slidably connected to the adjustable seal cover 102, and the rectangular limit block B303 is slidably connected to the adjustable seal cover 102; the adjustment unit further includes: an arc-shaped mounting rod 304, a support bending spring A305, and a support bending spring B306; the arc-shaped mounting rod 304 is fixedly installed on the adjustable seal cover 102, and the arc-shaped mounting rod 304 is also slidably connected to the rectangular limit block A302; the support bending spring A305 is sleeved outside the arc-shaped mounting rod 304; the support bending spring B306 is sleeved outside the arc-shaped mounting rod 304, and the elastic force of the support bending spring B306 is less than the elastic force of the support bending spring A305;

[0052] The prompt unit includes: a lithium battery 401, an alarm 402, and a switch 403; the lithium battery 401 is fixedly installed on the exhaust valve body 101; the alarm 402 is fixedly installed on the exhaust valve body 101, and the alarm 402 is also electrically connected to the lithium battery 401; there are two switches 403 in total, and the two switches 403 are fixedly installed inside the rectangular limit block B303, and the two switches 403 are respectively electrically connected to the lithium battery 401 and the alarm 402; when one of the switches 403 is in a pressed state, the alarm 402 works;

[0053] Its specific function is as follows: Since the top of the circular adjustment block 301 is provided with a hexagonal groove, it is convenient for the staff to rotate the circular adjustment block 301 through a hexagon wrench. Also, since the rectangular limit block A302 is fixedly installed outside the circular adjustment block 301, and the rectangular limit block B303 is fixedly installed outside the circular adjustment block 301, and both the rectangular limit block A302 and the rectangular limit block B303 are slidably connected to the adjustable seal cover 102, it plays a limiting role on the circular adjustment block 301, enabling the circular adjustment block 301 to only rotate;

[0054] In addition, since the arc-shaped mounting rod 304 is slidably connected to the rectangular limiting block A 302, and the supporting bending spring A 305 is sleeved outside the arc-shaped mounting rod 304, and the supporting bending spring B 306 is sleeved outside the arc-shaped mounting rod 304, when the staff rotates the circular adjusting block 301 clockwise by a wrench, the supporting bending spring A 305 is compressed. When the elastic force after the compression of the supporting bending spring A 305 is greater than the frictional force between the exhaust valve body 101 and the adjustable sealing cover 102, the adjustable sealing cover 102 moves downward; when the staff rotates the circular adjusting block 301 counterclockwise by a wrench, the supporting bending spring B 306 is compressed. When the elastic force after the compression of the supporting bending spring B 306 is greater than the frictional force between the exhaust valve body 101 and the adjustable sealing cover 102, the adjustable sealing cover 102 moves upward, which is convenient for the staff to make appropriate adjustments according to the actual situation; and because the elastic force of the supporting bending spring B 306 is less than the elastic force of the supporting bending spring A 305, the extra elastic force of the supporting bending spring A 305 can overcome the extra frictional force caused by the supporting spring A 105, ensuring that the elastic force given by the supporting bending spring A 305 when the adjustable sealing cover 102 rotates clockwise is basically the same as the elastic force given by the supporting bending spring B 306 when the adjustable sealing cover 102 rotates counterclockwise;

[0055] In addition, since the two switches 403 are fixedly installed inside the rectangular limiting block B 303, when the frictional force between the exhaust valve body 101 and the adjustable sealing cover 102 is large, and the adjustable sealing cover 102 rotates clockwise or counterclockwise, the adjustable sealing cover 102 can press the corresponding switch 403. Also, since the alarm 402 is electrically connected to the lithium battery 401, and the two switches 403 are respectively electrically connected to the lithium battery 401 and the alarm 402, the alarm 402 works when one of the switches 403 is in a pressed state, which is convenient for reminding the staff to add lubricating oil between the exhaust valve body 101 and the adjustable sealing cover 102.

[0056] In the embodiment of the present disclosure, as Figure 4 、 Figure 9 、 Figure 11 and Figure 12 shown, the auxiliary unit includes: a cross-shaped mounting frame 201, a circular guiding shaft 202, and a movable sealing plate 203; the cross-shaped mounting frame 201 is fixedly installed inside the adjustable sealing cover 102; the circular guiding shaft 202 is slidably installed on the cross-shaped mounting frame 201; the movable sealing plate 203 is fixedly installed at the top of the circular guiding shaft 202; the auxiliary unit further includes: a limiting retaining ring 204 and a supporting spring B 205; the limiting retaining ring 204 is fixedly installed at the bottom end of the circular guiding shaft 202; when the top of the limiting retaining ring 204 contacts the bottom of the cross-shaped mounting frame 201, the outer wall of the movable sealing plate 203 contacts the adjustable sealing cover 102; the supporting spring B 205 is sleeved outside the circular guiding shaft 202, and the supporting spring B 205 is located between the cross-shaped mounting frame 201 and the movable sealing plate 203;

[0057] The dispersion unit 500 further includes: a conical air collecting hood 502; the bottoms of the two circular hollow tubes 501 are in contact with the tops of the two movable sealing plates 203, and the two circular hollow tubes 501 and the two movable sealing plates 203 are concentrically arranged, and a circle of exhaust round holes 5011 are respectively formed at the bottom ends of the two circular hollow tubes 501; the conical air collecting hood 502 is fixedly installed on the tops of the two circular hollow tubes 501, and a circle of exhaust groove holes 5021 are formed at the top of the conical air collecting hood 502; the dispersion unit 500 further includes: a connection knob 503 and a movable auxiliary cover 504; the connection knob 503 is rotatably installed on the conical air collecting hood 502, and the bottom of the connection knob 503 is also threadedly connected to the circular adjustment block 301; the movable auxiliary cover 504 is installed outside the conical air collecting hood 502, and the inner wall of the movable auxiliary cover 504 is in contact with the outer wall of the conical air collecting hood 502;

[0058] Its specific function is as follows: Since the bottoms of the two circular hollow tubes 501 are in contact with the tops of the two movable sealing plates 203, and the two circular hollow tubes 501 and the two movable sealing plates 203 are concentrically arranged, and the two support springs B205 are located between the two cross mounting frames 201 and the two movable sealing plates 203, when the two circular hollow tubes 501 are separated from the adjustable sealing cover 102, the two movable sealing plates 203 automatically move upward under the action of the two support springs B205. When the tops of the two limit retaining rings 204 are in contact with the bottoms of the two cross mounting frames 201, the outer walls of the two movable sealing plates 203 are in contact with the adjustable sealing cover 102, ensuring that no gas is discharged when the staff adds lubricating oil, and improving the safety during maintenance; Also, since the connection knob 503 is rotatably installed on the conical air collecting hood 502, and the bottom of the connection knob 503 is also threadedly connected to the circular adjustment block 301, when the staff slidably installs the two circular hollow tubes 501 on the adjustable sealing cover 102 and connects the bottom of the connection knob 503 to the circular adjustment block 301, the two circular hollow tubes 501 push the two movable sealing plates 203 to automatically move downward. The gas in the exhaust valve body 101 flows through the gap between the two movable sealing plates 203 and the adjustable sealing cover 102, then enters the conical air collecting hood 502 through the two circles of exhaust round holes 5011 and the two circular hollow tubes 501, and then is discharged through a circle of exhaust groove holes 5021, which disperses the gas in the exhaust valve body 101, avoids the accumulation of oil and gas, and prevents safety accidents such as explosion;

[0059] In addition, since the movable auxiliary cover 504 is installed outside the conical air collecting hood 502 and the inner wall of the movable auxiliary cover 504 contacts the outer wall of the conical air collecting hood 502, when the staff rotates the connection knob 503, the staff needs to press the movable auxiliary cover 504 forcefully to ensure that the two circular hollow tubes 501 are slidably installed on the adjustable sealing cover 102. At this time, the movable auxiliary cover 504 seals a circle of exhaust slot holes 5021, ensuring that no gas is discharged when the staff rotates the connection knob 503, thus improving the safety during maintenance; when the connection knob 503 is connected to the circular adjustment block 301, when the staff's hand separates from the movable auxiliary cover 504, under the action of the gas pressure in a circle of exhaust slot holes 5021, it can push the movable auxiliary cover 504 to move upward automatically, so that the gas in a circle of exhaust slot holes 5021 is discharged through the gap between the conical air collecting hood 502 and the movable auxiliary cover 504.

[0060] Specific usage method and function of this embodiment:

[0061] When the present invention is in use, first, the staff connects the exhaust valve body 101 to the oil extraction equipment through bolts. When the gas pressure generated during oil extraction is greater than the pre-set range, the gas generated during oil extraction can push the movable sphere 104 to move upward automatically, enabling the gas to flow through the gap between the movable sphere 104 and the exhaust valve body 101, thus realizing automatic exhaust. When the gas pressure generated during oil extraction is less than the pre-set range, the movable sphere 104 automatically resets downward under the action of gravity and two support springs A 105. When it is necessary to adjust the pressure during exhaust, the staff inserts a hexagonal wrench of the corresponding model into the hexagonal groove on the circular adjustment block 301. When the staff rotates the circular adjustment block 301 clockwise with the wrench, the support bending spring A 305 is compressed. When the elastic force after the compression of the support bending spring A 305 is greater than the frictional force between the exhaust valve body 101 and the adjustable sealing cover 102, the adjustable sealing cover 102 moves downward. When the staff rotates the circular adjustment block 301 counterclockwise with the wrench, the support bending spring B 306 is compressed. When the elastic force after the compression of the support bending spring B 306 is greater than the frictional force between the exhaust valve body 101 and the adjustable sealing cover 102, the adjustable sealing cover 102 moves upward, which is convenient for the staff to make appropriate adjustments according to the actual situation. The extra elastic force of the support bending spring A 305 can overcome the extra frictional force caused by the support spring A 105, ensuring that the elastic force given by the support bending spring A 305 when the adjustable sealing cover 102 rotates clockwise is basically the same as the elastic force given by the support bending spring B 306 when the adjustable sealing cover 102 rotates counterclockwise. When the frictional force between the exhaust valve body 101 and the adjustable sealing cover 102 is large and the adjustable sealing cover 102 rotates clockwise or counterclockwise, the adjustable sealing cover 102 can press the corresponding switch 403. When one of the switches 403 is in the pressed state, the alarm 402 works, which is convenient for reminding the staff to add lubricating oil between the exhaust valve body 101 and the adjustable sealing cover 102. When the two circular hollow tubes 501 are separated from the adjustable sealing cover 102, the two movable sealing plates 203 automatically move upward under the action of the two support springs B 205. When the tops of the two limit retaining rings 204 contact the bottoms of the two cross mounting frames 201, the outer walls of the two movable sealing plates 203 contact the adjustable sealing cover 102, ensuring that no gas is discharged when the staff adds lubricating oil and improving the safety during maintenance.When the staff slidably installs two circular hollow tubes 501 on the adjustable sealing cover 102 and connects the bottom of the connection knob 503 to the circular adjustment block 301, the two circular hollow tubes 501 push the two movable sealing plates 203 to move downward automatically. The gas in the exhaust valve body 101 flows through the gap between the two movable sealing plates 203 and the adjustable sealing cover 102, and then enters the conical gas collecting hood 502 through two circles of exhaust round holes 5011 and the two circular hollow tubes 501, and then is discharged through a circle of exhaust slot holes 5021, which plays a role in dispersing the gas in the exhaust valve body 101, avoiding the accumulation of oil and gas, and preventing safety accidents such as explosion; when the staff rotates the connection knob 503, the staff needs to press the movable auxiliary cover 504 forcefully to ensure that the two circular hollow tubes 501 are slidably installed on the adjustable sealing cover 102. At this time, the movable auxiliary cover 504 seals a circle of exhaust slot holes 5021, ensuring that no gas is discharged when the staff rotates the connection knob 503, improving the safety during maintenance; when the connection knob 503 is connected to the circular adjustment block 301 and the staff's hand is separated from the movable auxiliary cover 504, under the action of the gas pressure in a circle of exhaust slot holes 5021, the movable auxiliary cover 504 can be pushed to move upward automatically, so that the gas in a circle of exhaust slot holes 5021 is discharged through the gap between the conical gas collecting hood 502 and the movable auxiliary cover 504.;

[0062] In this article, the following points need to be noted:

[0063] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0064] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0065] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An adjustable exhaust valve for deep wells in petroleum production, comprising: An exhaust unit; characterized in that the exhaust unit comprises: an exhaust valve body (101), an adjustable sealing cover (102) and a support spring A (105); the adjustable sealing cover (102) is threadedly connected to the inside of the exhaust valve body (101), and two conical exhaust holes are provided on the adjustable sealing cover (102); two sets of auxiliary units are installed inside the adjustable sealing cover (102), and the two sets of auxiliary units are used to seal the two conical exhaust holes on the adjustable sealing cover (102); The adjustable sealing cover (102) is provided with an adjustment unit, and the adjustment unit is used to adjust the exhaust pressure; the adjustment unit comprises: a circular adjustment block (301), a rectangular limit block A (302), and a rectangular limit block B (303); the circular adjustment block (301) is rotatably mounted on the adjustable sealing cover (102); the rectangular limit block A (302) is fixedly mounted on the outside of the circular adjustment block (301); the rectangular limit block B (303) is fixedly mounted on the outside of the circular adjustment block (301); a prompt unit is installed on the exhaust valve body (101) and the rectangular limit block B (303); a dispersion unit is installed on the adjustable sealing cover (102) and the circular adjustment block (301), and the dispersion unit is used to disperse the exhausted gas; The dispersion unit comprises: a circular hollow tube (501); two circular hollow tubes (501) are provided, and the two circular hollow tubes (501) are slidably mounted on the adjustable sealing cover (102); The adjustment unit further comprises: an arc-shaped mounting rod (304), a support spring A (305) and a support spring B (306); the arc-shaped mounting rod (304) is fixedly mounted on the adjustable sealing cover (102), and the arc-shaped mounting rod (304) is also slidably connected to the rectangular limit block A (302); the support spring A (305) is sleeved on the outside of the arc-shaped mounting rod (304); the support spring B (306) is sleeved on the outside of the arc-shaped mounting rod (304), and the elastic force of the support spring B (306) is smaller than the elastic force of the support spring A (305), so that the excess elastic force of the support spring A (305) overcomes the excess friction force caused by the support spring A (105).

2. The adjustable exhaust valve for deep wells in petroleum production according to claim 1, characterized in that: The exhaust unit further comprises: a circular movable shaft (103); two circular movable shafts (103) are provided in total, and the two circular movable shafts (103) are slidably mounted on the adjustable sealing cover (102).

3. The adjustable exhaust valve for deep wells in petroleum production according to claim 2, characterized in that: The exhaust unit further comprises: a movable sphere (104); the movable sphere (104) is fixedly mounted on the bottom of two circular movable shafts (103), and the bottom of the movable sphere (104) contacts the inner wall of the exhaust valve body (101); a total of two support springs A (105) are provided, and the two support springs A (105) are sleeved on the outside of the two circular movable shafts (103), and the two support springs A (105) are located between the adjustable sealing cover (102) and the movable sphere (104).

4. The adjustable exhaust valve for deep wells in petroleum production according to claim 1, characterized in that: The auxiliary unit comprises: a cross mounting frame (201), a circular guide shaft (202) and a movable sealing plate (203); the cross mounting frame (201) is fixedly mounted inside the adjustable sealing cover (102); the circular guide shaft (202) is slidably mounted on the cross mounting frame (201); and the movable sealing plate (203) is fixedly mounted on the top of the circular guide shaft (202).

5. The adjustable exhaust valve for deep wells in petroleum production according to claim 4, characterized in that: The auxiliary unit further comprises: a limit ring (204) and a support spring B (205); the limit ring (204) is fixedly mounted on the bottom end of the circular guide shaft (202); when the top of the limit ring (204) contacts the bottom of the cross mounting frame (201), the outer wall of the movable sealing plate (203) contacts the adjustable sealing cover (102); the support spring B (205) is sleeved on the outside of the circular guide shaft (202), and the support spring B (205) is located between the cross mounting frame (201) and the movable sealing plate (203).

6. The adjustable exhaust valve for deep wells in petroleum production according to claim 1, characterized in that: The rectangular limit block A (302) is slidably connected to the adjustable sealing cover (102), and the rectangular limit block B (303) is slidably connected to the adjustable sealing cover (102).

7. The adjustable exhaust valve for deep wells in petroleum production according to claim 1, characterized in that: The prompt unit comprises: a lithium battery (401), an alarm (402) and a switch (403); the lithium battery (401) is fixedly mounted on the exhaust valve body (101); the alarm (402) is fixedly mounted on the exhaust valve body (101), and the alarm (402) is also electrically connected to the lithium battery (401); there are two switches (403) in total, and the two switches (403) are fixedly mounted inside the rectangular limit block B (303), and the two switches (403) are electrically connected to the lithium battery (401) and the alarm (402) respectively; when one of the switches (403) is in a pressed state, the alarm (402) operates.

8. The adjustable exhaust valve for deep wells in petroleum production according to claim 6, characterized in that: The dispersion unit (500) further includes: a conical air collecting hood (502); the bottoms of the two circular hollow tubes (501) are in contact with the tops of the two movable sealing plates (203), and the two circular hollow tubes (501) are concentrically arranged with the two movable sealing plates (203), and a circle of exhaust circular holes (5011) are respectively provided at the bottom ends of the two circular hollow tubes (501); the conical air collecting hood (502) is fixedly installed on the tops of the two circular hollow tubes (501), and a circle of exhaust slot holes (5021) are provided at the top of the conical air collecting hood (502).

9. The adjustable exhaust valve for deep wells in petroleum production according to claim 8, characterized in that: The dispersion unit (500) further comprises: a connecting knob (503) and a movable auxiliary cover (504); the connecting knob (503) is rotatably mounted on the conical air collecting hood (502), and the bottom of the connecting knob (503) is also threadedly connected to the circular adjustment block (301); the movable auxiliary cover (504) is mounted on the outside of the conical air collecting hood (502), and the inner wall of the movable auxiliary cover (504) is in contact with the outer wall of the conical air collecting hood (502).

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