A wellhead sealing valve with adjustable oil output

Abstract

The present invention relates to the technical field of wellhead gate valves. The present invention discloses a wellhead sealing valve with adjustable oil output, comprising a valve seat and an auxiliary mechanism. The auxiliary mechanism is used to assist in throttling and protect the inside of the wellhead valve. The bottom of the auxiliary mechanism is fixedly connected to the top of the valve seat. The sealing valve also includes a filtering mechanism and an adjusting mechanism. The adjusting mechanism is used to protect the connection of the wellhead valve. The outer wall of the adjusting mechanism is slidably connected to the top of the auxiliary mechanism. The wellhead valve plays a certain buffering role on the fluid when the flow rate is large, avoiding excessive sand and gravel content, which causes erosion of the inner wall and parts of the valve body and affects the service life of the valve, intercepts large impurities, and at the same time avoids the fluid from being blocked inside the valve body, avoids accidents caused by excessive pressure, and avoids rust between the valve stem and the valve body, which makes the valve stem inconvenient or impossible to rotate, thereby affecting the throttling and sealing effects of the valve.

Description

Technical Field

[0001] The invention relates to the technical field of wellhead gate valves, and in particular to a wellhead sealing valve with adjustable oil output. Background Art

[0002] Wellhead valves are wellhead sealing valves and pipeline accessories with adjustable oil flow rates. They are control components in fluid delivery systems and have functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion, or overflow pressure relief. They are widely used in industrial production processes such as chemical, petroleum, metallurgy, mining, electricity, energy, and environmental protection to connect pressure gauges, measure and manage pressure, and control pipelines that convey media as needed.

[0003] When wellhead valves encounter high erosion, high pressure difference and high sand content conditions during use, these high-speed sand-containing fluids will directly flush the internal components of the valve body, causing a lot of noise inside the valve body, and the various components are severely damaged by erosion, which greatly shortens the service life of the valve. Wellhead valves are usually exposed to outdoor use. Long-term exposure to the sun and rain can easily cause water to enter the top of the valve stem and rust, resulting in the handwheel being unable to rotate, which is not conducive to quick adjustment. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems thereof by adopting the following technical solutions: the wellhead sealing valve with adjustable oil output of the present invention comprises a valve seat;

[0005] An auxiliary mechanism, which is used to assist throttling and protect the inside of the wellhead valve, and the bottom of the auxiliary mechanism is fixedly connected to the top of the valve seat;

[0006] The sealing valve also includes a filtering mechanism and an adjusting mechanism;

[0007] Wherein, the filtering mechanism is used to filter the sediment in the liquid, the outer wall of the filtering mechanism is fixedly connected to the outer wall of the auxiliary mechanism, the filtering mechanism includes a liquid inlet pipe, the outer wall of the liquid inlet pipe is fixedly connected to the outer wall of the auxiliary mechanism, the inner wall of the liquid inlet pipe is fixedly connected to a sieve plate, the bottom of the sieve plate is provided with a rotating plate, the outer wall of the rotating plate is rotatably connected to the inner wall of the liquid inlet pipe, the end of the sieve plate close to the auxiliary mechanism is slidably connected to a slider, and the end of the slider close to the sieve plate is rotatably connected to a cleaning rod;

[0008] The adjusting mechanism is used to protect the connection of the wellhead valve, and the outer wall of the adjusting mechanism is slidably connected to the top of the auxiliary mechanism.

[0009] Preferably, the auxiliary mechanism includes a valve body, the bottom of the valve body is fixedly connected to the top of the valve seat, the inner wall of the valve body at one end away from the base is threadedly connected to an adjusting nut, the top of the inner wall of the valve body is evenly provided with a first telescopic rod, the bottom of the first telescopic rod is fixedly connected to a fixing ring, the interior of the fixing ring is evenly provided with a hydraulic rod, the outer wall of the hydraulic rod is fixedly connected to the inner wall of the fixing ring, and the inner wall of the valve body close to the valve seat is fixedly connected to a sealing assembly;

[0010] The adjustment mechanism includes a valve core, the top of the valve core is fixedly connected to a valve stem, the bottom of the valve core is fixedly connected to a movable rod, the top of the movable rod is sleeved with the inner wall of the valve core, the bottom of the movable rod is fixedly connected to a shell, the inner wall of one end of the shell away from the movable rod is slidably connected to the outer wall of the valve stem, the top of the valve stem is fixedly connected to a protective assembly, and the inner wall of the protective assembly is slidably connected to the outer wall of the valve body;

[0011] The protective component protects the part of the valve stem exposed to the environment to prevent the valve from rusting and causing the protective component to be unable to rotate. The rotation of the protective component drives the valve stem to extend, so that the valve core is close to the sealing component. The flow rate is controlled by adjusting the distance between the valve core and the sealing component. A support is added to the valve stem from the middle to play a protective role, avoiding excessive impact force on the valve stem due to large flow rate, which may easily cause the valve stem and valve core to break, reducing the impact force on the valve core and extending the service life of the valve core.

[0012] Preferably, the sealing assembly includes a first telescopic column, the outer wall of the first telescopic column is fixedly connected to the inner wall of the valve body, the end of the first telescopic column away from the valve body is fixedly connected to a top block, the inner wall of the valve body close to the first telescopic column is fixedly connected to a fixing groove, the outer wall of the top block contacts the inner wall of the fixing groove close to the valve body end, the fixing groove is fixedly connected to a rubber ring at one end away from the top block, the outer wall of the top block away from the first telescopic column end contacts the inner wall of the rubber ring, thereby enhancing the sealing effect and avoiding large friction between the outer shell and the inner wall of the valve body during the movement of the valve core with the inner wall of the valve body, causing wear on the wellhead valve, affecting the service life and the sealing effect.

[0013] Preferably, the filter mechanism also includes a discharge component, the top of the discharge component is fixedly connected to the bottom of the liquid inlet pipe, the inner wall of the discharge component close to the valve body is fixedly connected to a first stopper, the top of the first stopper is fixedly connected to a spring, a second telescopic column is provided inside the spring, the top of the second telescopic column is rotatably connected to the bottom of the rotating plate, the top of the spring is fixedly connected to the bottom of the rotating plate, the inner wall of the discharge component away from the first stopper is fixedly connected to the second stopper, and the bottom of the second stopper contacts the bottom of the rotating plate, which plays a certain buffering role on the fluid when the flow rate is large, avoids excessive sand and gravel content, which causes scouring of the inner wall and parts of the valve body and affects the service life of the valve, intercepts large impurities, and at the same time avoids the fluid from being blocked inside the valve body, and avoids accidents caused by excessive pressure.

[0014] The top of the piston plate is evenly provided with a scraper, and the bottom of the scraper is fixedly connected to the top of the piston plate, and the top of the piston plate is evenly provided with a second telescopic rod, and the bottom of the second telescopic rod is fixedly connected to the inner wall of the piston plate, and the top of the second telescopic rod is fixedly connected to a plugging head, and the bottom of the inner wall of the collection box is fixedly connected to the connecting pipe away from the lifting column. The bottom of the collection box is fixedly connected to the bottom plate, and the top of the bottom plate is fixedly connected to the column to ensure the sealing effect. After the collection is completed, it is lowered again to be discharged, filtering the sand and gravel in the fluid, reducing the blockage of sand and gravel in the valve body, and discharging the intercepted sand and gravel. At the same time, the sealing effect inside the valve body is ensured, maintenance costs are reduced, and the maintenance work of staff is reduced.

[0015] Preferably, the protective assembly includes a lower cover shell, the inner wall of the lower cover shell is slidingly connected to the outer wall of the valve body, the top of the lower cover shell is fixedly connected with a sealing ring, the top of the lower cover shell is provided with an upper cover shell, the bottom of the upper cover shell is snap-fitted with the top of the lower cover shell, the top of the inner wall of the upper cover shell is fixedly connected with a push rod, the bottom of the push rod contacts the top of the valve stem, the interior of the lower cover shell is provided with a holding groove, the outer wall of the holding groove is rotatably connected to the inner wall of the lower cover shell, the outer wall of the valve stem is fixedly connected with a handwheel, the outer wall of the handwheel is sleeved with the inner wall of the upper cover shell, isolating the rotating part from the external environment, and a desiccant is placed in the holding groove to prevent the valve stem from being inconvenient or unable to rotate due to rust between the valve stem and the valve body, thereby affecting the throttling and sealing effect of the valve.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention sets a filtering mechanism, and the diameter of the part where the sieve plate is installed inside the liquid inlet pipe is larger, which plays a certain buffering role on the fluid when the flow rate is large, avoiding excessive sand and gravel content, which causes erosion of the inner wall and parts of the valve body and affects the service life of the valve, intercepts large impurities, and at the same time avoids the fluid from being blocked inside the valve body, avoiding accidents caused by excessive pressure.

[0018] 2. The present invention sets a discharge component, and the column blocks the plugging head, so that the second telescopic rod is extended, and a gap is generated between the plugging head and the piston plate. The sand containing petroleum flows to the outside through the connecting pipe, and the staff collects it for recycling. After the impurities are discharged, the lifting column drives the piston plate to rise again, and the scraper scrapes off the debris adhering to the inner wall of the collection box. The scraper is in close contact with the inner wall of the collection box to ensure the sealing effect. After the collection is completed, it descends again to discharge, and the sand and gravel in the fluid are filtered to reduce the blockage of sand and gravel in the valve body. The intercepted sand and gravel are discharged, and at the same time, the sealing effect inside the valve body is guaranteed, the maintenance cost is reduced, and the maintenance work of the staff is reduced.

[0019] 3. The present invention isolates the rotating part from the external environment by providing a protective component, and loads desiccant into the containing tank to prevent the valve stem from rotating inconveniently or unable to rotate due to rust between the valve stem and the valve body, thereby affecting the throttling and sealing effects of the valve. When the desiccant needs to be replaced, the upper cover shell is removed, the containing tank is manually moved, and the hole at the bottom of the containing tank is aligned with the hole at the bottom of the lower cover shell to allow the desiccant to flow out. Then, new desiccant is reloaded and the upper cover shell is installed.

[0020] 4. The present invention provides a sealing component, which causes the rubber ring to deform and come into close contact with the outer shell of the valve core, thereby enhancing the sealing effect and avoiding large friction between the outer shell and the inner wall of the valve body during the movement of the valve core and the inner wall of the valve body, thereby causing wear on the wellhead valve, affecting the service life and the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0022] Figure 2 is a cross-sectional view of the present invention as a whole;

[0023] Figure 3 It is a structural schematic diagram of the auxiliary mechanism of the present invention;

[0024] Figure 4 It is a rear view of the filter mechanism of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the filtering mechanism of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the adjustment mechanism of the present invention;

[0027] Figure 7 It is a schematic structural diagram of the sealing assembly of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the discharge assembly of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the protective assembly of the present invention;

[0030] Figure: 1, valve seat; 2, auxiliary mechanism; 201, valve body; 202, adjusting nut; 203, first telescopic rod; 204, fixing ring; 205, hydraulic rod; 206, sealing assembly; 2061, first telescopic column; 2062, top block; 2063, fixing groove; 2064, rubber ring; 3, filtering mechanism; 301, liquid inlet pipe; 302, sieve plate; 303, slider; 304, cleaning rod; 305, rotating plate; 306, first stopper; 307, spring; 308, second telescopic column; 309, discharge assembly; 3 091. Collection box; 3092. Lifting column; 3093. Piston plate; 3094. Scraper; 3095. Second telescopic rod; 3096. Plug; 3097. Connecting pipe; 3098. Bottom plate; 3099. Column; 310. Second stopper; 4. Adjustment mechanism; 401. Valve core; 402. Movable rod; 403. Housing; 404. Valve stem; 405. Protective assembly; 4051. Upper cover; 4052. Push rod; 4053. Lower cover; 4054. Sealing ring; 4055. Container; 406. Handwheel. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0032] Example 1: Use Figures 1-6 A wellhead sealing valve with adjustable oil output according to one embodiment of the present invention is described below.

[0033] like Figures 1-6 As shown, the wellhead sealing valve with adjustable oil output according to the present invention comprises a valve seat 1;

[0034] Auxiliary mechanism 2, which is used to assist throttling and protect the inside of the wellhead valve. The bottom of the auxiliary mechanism 2 is fixedly connected to the top of the valve seat 1;

[0035] The sealing valve further comprises a filtering mechanism 3 and an adjusting mechanism 4;

[0036] Among them, the filtering mechanism 3 is used to filter the sediment in the liquid. The outer wall of the filtering mechanism 3 is fixedly connected to the outer wall of the auxiliary mechanism 2. The filtering mechanism 3 includes a liquid inlet pipe 301. The outer wall of the liquid inlet pipe 301 is fixedly connected to the outer wall of the auxiliary mechanism 2. The inner wall of the liquid inlet pipe 301 is fixedly connected to a sieve plate 302. A rotating plate 305 is provided at the bottom of the sieve plate 302. The outer wall of the rotating plate 305 is rotatably connected to the inner wall of the liquid inlet pipe 301. The end of the sieve plate 302 close to the auxiliary mechanism 2 is slidably connected to a slider 303. The end of the slider 303 close to the sieve plate 302 is rotatably connected to a cleaning rod 304.

[0037] The adjusting mechanism 4 is used to protect the connection of the wellhead valve, and the outer wall of the adjusting mechanism 4 is slidably connected to the top of the auxiliary mechanism 2;

[0038] When in use, the wellhead valve as a whole is fixedly supported by the valve seat 1, and oil enters the auxiliary mechanism 2 through the filtering mechanism 3. When encountering high erosion, high pressure difference and high sand content working conditions, the filtering mechanism 3 reduces the pressure and buffers the fluid, and large impurities are trapped and stored inside the filtering mechanism 3. The regulating mechanism 4 adjusts the flow rate of the fluid by adjusting the distance from the auxiliary mechanism 2. After the regulating mechanism 4 is closed, the impurities inside the filtering mechanism 3 are cleaned and discharged.

[0039] The auxiliary mechanism 2 includes a valve body 201, the bottom of the valve body 201 is fixedly connected to the top of the valve seat 1, an adjusting nut 202 is threadedly connected to the inner wall of the valve body 201 at one end away from the base, a first telescopic rod 203 is evenly arranged on the top of the inner wall of the valve body 201, a fixing ring 204 is fixedly connected to the bottom of the first telescopic rod 203, a hydraulic rod 205 is evenly arranged inside the fixing ring 204, the outer wall of the hydraulic rod 205 is fixedly connected to the inner wall of the fixing ring 204, and a sealing assembly 206 is fixedly connected to the end of the inner wall of the valve body 201 close to the valve seat 1;

[0040] The adjustment mechanism 4 includes a valve core 401, the top of the valve core 401 is fixedly connected to a valve stem 404, the bottom of the valve core 401 is fixedly connected to a movable rod 402, the top of the movable rod 402 is sleeved with the inner wall of the valve core 401, the bottom of the movable rod 402 is fixedly connected to a housing 403, the inner wall of the end of the housing 403 away from the movable rod 402 is slidably connected to the outer wall of the valve stem 404, the top of the valve stem 404 is fixedly connected to a protective assembly 405, and the inner wall of the protective assembly 405 is slidably connected to the outer wall of the valve body 201;

[0041] The auxiliary mechanism 2 is used in conjunction with the adjustment mechanism 4 to manually adjust the length of the valve stem 404 by rotating the protective component 405. The protective component 405 protects the part of the valve stem 404 exposed to the environment to prevent the valve from rusting, which causes the protective component 405 to be unable to rotate. The rotation of the protective component 405 drives the valve stem 404 to extend, so that the valve core 401 is close to the sealing component 206. The flow rate is controlled by adjusting the distance between the valve core 401 and the sealing component 206.

[0042] The sealing assembly 206 facilitates better sealing between the valve core 401 and the valve body 201, thereby strengthening the sealing effect of the wellhead valve, reducing the friction of the valve core 401, and extending the service life of the valve core 401. When the valve stem 404 extends and drives the valve core 401 to move downward, the first telescopic rod 203 extends and drives the fixing ring 204 to move downward. Then, the hydraulic rod 205 extends and presses the outer wall of the valve stem 404, thereby providing a support for the valve stem 404 from the middle, thereby playing a protective role and preventing the valve stem 404 from being subjected to excessive impact force due to large flow rate and velocity, which may easily cause the valve stem 404 and the valve core 401 to break.

[0043] During the downward movement of the valve core 401, the shell 403 first contacts the surface of the sealing assembly 206, and the filler is filled between the shell 403 and the valve core 401. During the flow of the fluid, the shell 403 is first impacted. The filler is used to buffer the fluid, reduce the impact force on the valve core 401, and extend the service life of the valve core 401.

[0044] The filter mechanism 3 also includes a discharge assembly 309. The top of the discharge assembly 309 is fixedly connected to the bottom of the liquid inlet pipe 301. The inner wall of the discharge assembly 309 is fixedly connected to the end near the valve body 201 with a first stopper 306. The top of the first stopper 306 is fixedly connected to a spring 307. A second telescopic column 308 is provided inside the spring 307. The top of the second telescopic column 308 is rotatably connected to the bottom of the rotating plate 305. The top of the spring 307 is fixedly connected to the bottom of the rotating plate 305. The end of the inner wall of the discharge assembly 309 away from the first stopper 306 is fixedly connected to a second stopper 310. The bottom of the second stopper 310 contacts the bottom of the rotating plate 305.

[0045] The fluid enters the valve through the liquid inlet pipe 301, first passes through the sieve plate 302, and screens out large pieces of debris, which are then accumulated on the top of the rotating plate 305. When a certain amount of fluid is reached, the rotating plate 305 rotates due to the influence of gravity and cleans the debris into the discharge component 309. When the flow rate decreases, the slider 303 drives the cleaning rod 304 to rotate and clean the debris on the surface of the sieve plate 302. The rotating plate 305 can only rotate in one direction. When there is a lot of debris, gravity causes the rotating plate 305 to rotate and drop it into the discharge component 309. When the debris is relatively large, the rotating plate 305 rotates and drops it into the discharge component 309. After a while, the second telescopic column 308 extends to drive the rotating plate 305 to rotate, and the cleaning rod 304 scrapes the debris on the sieve plate 302 into the discharge assembly 309. The diameter of the part where the sieve plate 302 is installed inside the liquid inlet pipe 301 is relatively large, which plays a certain buffering role for the fluid when the flow rate is large, avoiding excessive sand and gravel content, causing erosion of the inner wall and parts of the valve body 201, affecting the service life of the valve, intercepting large impurities, and at the same time preventing the fluid from being blocked inside the valve body 201, avoiding accidents caused by excessive pressure.

[0046] The specific workflow is as follows:

[0047] During operation, the wellhead valve as a whole is fixedly supported by the valve seat 1, and oil enters the auxiliary mechanism 2 through the filtering mechanism 3. When encountering high erosion, high pressure difference and high sand content working conditions, the filtering mechanism 3 reduces the pressure of the fluid and buffers it, and traps and stores large impurities inside the filtering mechanism 3. The regulating mechanism 4 adjusts the flow rate of the fluid by adjusting the distance from the auxiliary mechanism 2. After the regulating mechanism 4 is closed, the impurities inside the filtering mechanism 3 are cleaned and discharged.

[0048] Example 2: Use Figures 1-9 A wellhead sealing valve with adjustable oil output according to one embodiment of the present invention is described below.

[0049] like Figures 1-9 As shown, a wellhead sealing valve with adjustable oil output according to the present invention, based on the first embodiment, comprises a sealing assembly 206 including a first telescopic column 2061, an outer wall of the first telescopic column 2061 being fixedly connected to the inner wall of the valve body 201, a top block 2062 being fixedly connected to an end of the first telescopic column 2061 away from the valve body 201, a fixing groove 2063 being fixedly connected to an end of the inner wall of the valve body 201 close to the first telescopic column 2061, an outer wall of the top block 2062 being in contact with an inner wall of the fixing groove 2063 close to the valve body 201, a rubber ring 2064 being fixedly connected to an end of the fixing groove 2063 away from the top block 2062, and an outer wall of the top block 2062 being in contact with an inner wall of the rubber ring 2064 at an end close to the first telescopic column 2061;

[0050] When the valve stem 404 extends and drives the valve core 401 to approach the sealing assembly 206 and intercept the fluid, it first contacts the rubber ring 2064. At this time, the first telescopic column 2061 extends and drives the top block 2062 to move outward, causing the rubber ring 2064 to deform. The rubber ring 2064 is in close contact with the outer shell 403 outside the valve core 401, thereby enhancing the sealing effect and avoiding large friction between the outer shell 403 and the inner wall of the valve body 201 during the movement of the valve core 401 and the inner wall of the valve body 201, which causes wear to the wellhead valve, shortening its service life and affecting the sealing effect.

[0051] The discharge assembly 309 includes a collecting box 3091, the top of which is fixedly connected to the bottom of the liquid inlet pipe 301, a lifting column 3092 being fixedly connected to the bottom of the inner wall of the collecting box 3091, a piston plate 3093 being fixedly connected to the top of the lifting column 3092, a scraper 3094 being evenly provided on the top of the piston plate 3093, a second telescopic rod 3095 being evenly provided on the top of the piston plate 3093, a bottom of the second telescopic rod 3095 being fixedly connected to the inner wall of the piston plate 3093, a plug 3096 being fixedly connected to the top of the second telescopic rod 3095, a connecting pipe 3097 being fixedly connected to the end of the bottom of the inner wall of the collecting box 3091 away from the lifting column 3092, a bottom of the collecting box 3091 being fixedly connected to a bottom plate 3098, and a column 3099 being fixedly connected to the top of the bottom plate 3098;

[0052] When the oil passes through the liquid inlet pipe 301, the lifting column 3092 drives the piston plate 3093 to rise close to the liquid inlet pipe 301, and the screen plate 302 filters the debris. During the accumulation of debris, the piston plate 3093 gradually drops. Since the debris contains oil, it needs to be recycled. The staff needs to collect the debris inside the collection box 3091. Before discharge, the adjustment mechanism 4 blocks the pipeline and stops the oil delivery. Then the lifting column 3092 drives the piston plate 3093 to drop and contact the connecting pipe 3097. At this time, the plugging head 3096 contacts the column 3099, and the column 3099 blocks the plugging head 3096, so that the second telescopic rod 3095 extends, allowing the plugging head 3096 to A gap is created between the piston plate 3093 and the sand containing petroleum flows to the outside through the connecting pipe 3097. The staff collects it for recycling. After the impurities are discharged, the lifting column 3092 drives the piston plate 3093 to rise again, and the scraper 3094 scrapes off the debris adhering to the inner wall of the collection box 3091. The scraper 3094 is in close contact with the inner wall of the collection box 3091 to ensure the sealing effect. After the collection is completed, it descends again to discharge, filter the sand and gravel in the fluid, reduce the blockage of sand and gravel in the valve body 201, discharge the intercepted sand and gravel, and at the same time ensure the sealing effect inside the valve body 201, reduce maintenance costs, and reduce the work of staff for maintenance.

[0053] The protective assembly 405 includes a lower cover shell 4053, the inner wall of which is slidably connected to the outer wall of the valve body 201, a sealing ring 4054 is fixedly connected to the top of the lower cover shell 4053, an upper cover shell 4051 is provided on the top of the lower cover shell 4053, the bottom of the upper cover shell 4051 is snap-fitted to the top of the lower cover shell 4053, a push rod 4052 is fixedly connected to the top of the inner wall of the upper cover shell 4051, the bottom of the push rod 4052 contacts the top of the valve stem 404, a receiving groove 4055 is provided inside the lower cover shell 4053, the outer wall of the receiving groove 4055 is rotatably connected to the inner wall of the lower cover shell 4053, a hand wheel 406 is fixedly connected to the outer wall of the valve stem 404, and the outer wall of the hand wheel 406 is sleeved with the inner wall of the upper cover shell 4051;

[0054] When installing the valve, install the lower cover 4053 on the outer wall of the valve body 201, buckle the upper cover 4051 on the top of the lower cover 4053, and tightly connect the upper cover 4051 and the lower cover 4053 with the sealing ring 4054. The outer wall of the hand wheel 406 is clamped between the upper cover 4051 and the lower cover 4053. When the staff turns the hand wheel 406, the upper cover 4051 and the lower cover 4053 rotate accordingly, isolating the rotating parts from the external environment and Desiccant is placed in the receiving groove 4055 to prevent the valve stem 404 from rotating inconveniently or unable to rotate due to rust between the valve stem 404 and the valve body 201, thereby affecting the throttling and sealing effects of the valve. When the desiccant needs to be replaced, the upper cover 4051 is removed, and the receiving groove 4055 is manually moved to align the hole at the bottom of the receiving groove 4055 with the hole at the bottom of the lower cover 4053 to allow the desiccant to flow out. Then, new desiccant is reloaded and the upper cover 4051 is installed.

[0055] The specific workflow is as follows:

[0056] During operation, when the staff rotates the hand wheel 406, the upper cover 4051 and the lower cover 4053 rotate accordingly, isolating the rotating parts from the external environment, and loading the desiccant into the holding tank 4055. When the oil passes through the liquid inlet pipe 301, the lifting column 3092 drives the piston plate 3093 to rise close to the liquid inlet pipe 301, and the sieve plate 302 filters the debris. During the accumulation of debris, the piston plate 3093 gradually descends. Since the debris contains oil, it needs to be recycled. The staff needs to collect the debris inside the collection box 3091. Before discharging, the adjustment mechanism 4 blocks the pipeline and stops the oil delivery. Then the lifting column 3092 drives the piston plate 3093 to descend and contact the connecting pipe 30 97. At this time, the plugging head 3096 contacts the column 3099, and the column 3099 blocks the plugging head 3096, so that the second telescopic rod 3095 is extended, and a gap is generated between the plugging head 3096 and the piston plate 3093. The sand containing petroleum flows to the outside through the connecting pipe 3097, and the staff collects it for recycling. When the flow needs to be adjusted, the valve stem 404 extends and drives the valve core 401 close to the sealing component 206. When the fluid flow is stopped, it first contacts the rubber ring 2064. At this time, the first telescopic column 2061 extends and drives the top block 2062 to move outward, causing the rubber ring 2064 to deform. The rubber ring 2064 is in close contact with the outer shell 403 outside the valve core 401 to stop the fluid.

[0057] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A wellhead sealing valve with adjustable oil output, comprising: Valve seat (1); An auxiliary mechanism (2), the auxiliary mechanism (2) is used to assist throttling and protect the interior of the wellhead valve, the bottom of the auxiliary mechanism (2) being fixedly connected to the top of the valve seat (1); It is characterized in that The sealing valve further comprises a filtering mechanism (3) and an adjusting mechanism (4); Wherein, a filtering mechanism (3) is used to filter sediment in the liquid, the outer wall of the filtering mechanism (3) is fixedly connected to the outer wall of the auxiliary mechanism (2), the filtering mechanism (3) comprises a liquid inlet pipe (301), the outer wall of the liquid inlet pipe (301) is fixedly connected to the outer wall of the auxiliary mechanism (2), the inner wall of the liquid inlet pipe (301) is fixedly connected to a sieve plate (302), a rotating plate (305) is provided at the bottom of the sieve plate (302), the outer wall of the rotating plate (305) is rotatably connected to the inner wall of the liquid inlet pipe (301), the end of the sieve plate (302) close to the auxiliary mechanism (2) is slidably connected to a slider (303), and the end of the slider (303) close to the sieve plate (302) is rotatably connected to a cleaning rod (304); An adjustment mechanism (4), the adjustment mechanism (4) is used to protect the connection of the wellhead valve, and the outer wall of the adjustment mechanism (4) is slidably connected to the top of the auxiliary mechanism (2); The auxiliary mechanism (2) comprises a valve body (201), the bottom of the valve body (201) is fixedly connected to the top of the valve seat (1), the inner wall of the valve body (201) at one end away from the base is threadedly connected to an adjusting nut (202), a first telescopic rod (203) is evenly arranged on the top of the inner wall of the valve body (201), a fixing ring (204) is fixedly connected to the bottom of the first telescopic rod (203), a hydraulic rod (205) is evenly arranged inside the fixing ring (204), the outer wall of the hydraulic rod (205) is fixedly connected to the inner wall of the fixing ring (204), and a sealing assembly (206) is fixedly connected to the end of the inner wall of the valve body (201) close to the valve seat (1); The filtering mechanism (3) further comprises a discharge assembly (309), the top of the discharge assembly (309) being fixedly connected to the bottom of the liquid inlet pipe (301), an inner wall of the discharge assembly (309) being fixedly connected to an end thereof close to the valve body (201), a spring (307) being fixedly connected to the top of the first stopper (306), a second telescopic column (308) being provided inside the spring (307), the top of the second telescopic column (308) being rotatably connected to the bottom of the rotating plate (305), the top of the spring (307) being fixedly connected to the bottom of the rotating plate (305), an inner wall of the discharge assembly (309) being fixedly connected to an end thereof away from the first stopper (306), and the bottom of the second stopper (310) being in contact with the bottom of the rotating plate (305); The adjustment mechanism (4) includes a valve core (401), the top of the valve core (401) is fixedly connected to a valve stem (404), the bottom of the valve core (401) is fixedly connected to a movable rod (402), the top of the movable rod (402) is sleeved with the inner wall of the valve core (401), the bottom of the movable rod (402) is fixedly connected to a housing (403), the inner wall of one end of the housing (403) away from the movable rod (402) is slidably connected to the outer wall of the valve stem (404), the top of the valve stem (404) is fixedly connected to a protective component (405), and the inner wall of the protective component (405) is slidably connected to the outer wall of the valve body (201).

2. The wellhead sealing valve with adjustable oil output according to claim 1, characterized in that: The sealing assembly (206) includes a first telescopic column (2061), an outer wall of the first telescopic column (2061) is fixedly connected to the inner wall of the valve body (201), an end of the first telescopic column (2061) away from the valve body (201) is fixedly connected to a top block (2062), an end of the inner wall of the valve body (201) close to the first telescopic column (2061) is fixedly connected to a fixing groove (2063), an outer wall of the top block (2062 is in contact with an inner wall of the fixing groove (2063) close to the valve body (201), an end of the fixing groove (2063) away from the top block (2062) is fixedly connected to a rubber ring (2064), and an outer wall of the top block (2062) away from the first telescopic column (2061) is in contact with an inner wall of the rubber ring (2064).

3. The wellhead sealing valve with adjustable oil output according to claim 1, characterized in that: The discharge assembly (309) comprises a collection box (3091), the top of the collection box (3091) is fixedly connected to the bottom of the liquid inlet pipe (301), the bottom of the inner wall of the collection box (3091) is fixedly connected to a lifting column (3092), the top of the lifting column (3092) is fixedly connected to a piston plate (3093), the top of the piston plate (3093) is evenly provided with scraping strips (3094), and the bottom of the scraping strips (3094) is fixedly connected to the top of the piston plate (3093).

4. The wellhead sealing valve with adjustable oil output according to claim 3, characterized in that: A second telescopic rod (3095) is evenly arranged on the top of the piston plate (3093), the bottom of the second telescopic rod (3095) is fixedly connected to the inner wall of the piston plate (3093), the top of the second telescopic rod (3095) is fixedly connected to a plug (3096), the bottom of the inner wall of the collection box (3091) away from the lifting column (3092) is fixedly connected to a connecting pipe (3097), the bottom of the collection box (3091) is fixedly connected to a bottom plate (3098), and the top of the bottom plate (3098) is fixedly connected to a column (3099).

5. The wellhead sealing valve with adjustable oil output according to claim 1, characterized in that: The protective assembly (405) includes a lower cover shell (4053), the inner wall of the lower cover shell (4053) is slidably connected to the outer wall of the valve body (201), the top of the lower cover shell (4053) is fixedly connected to a sealing ring (4054), the top of the lower cover shell (4053) is provided with an upper cover shell (4051), and the bottom of the upper cover shell (4051) is snap-fitted to the top of the lower cover shell (4053).

6. The wellhead sealing valve with adjustable oil output according to claim 5, characterized in that: The top of the inner wall of the upper cover shell (4051) is fixedly connected to a push rod (4052), and the bottom of the push rod (4052) contacts the top of the valve stem (404). The interior of the lower cover shell (4053) is provided with a receiving groove (4055), and the outer wall of the receiving groove (4055) is rotatably connected to the inner wall of the lower cover shell (4053). The outer wall of the valve stem (404) is fixedly connected to a hand wheel (406), and the outer wall of the hand wheel (406) is sleeved with the inner wall of the upper cover shell (4051).

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