Wellhead sealing valve with adjustable oil outlet quantity

Abstract

The invention relates to the technical field of well mouth gate valves, and discloses a well mouth sealing valve with adjustable oil outlet quantity, which comprises a valve seat and an auxiliary mechanism, the auxiliary mechanism is used for assisting throttling and protecting the inside of the well mouth valve, the bottom of the auxiliary mechanism is fixedly connected with the top of the valve seat, the sealing valve further comprises a filtering mechanism and an adjusting mechanism, and the adjusting mechanism is fixedly connected with the valve seat. The adjusting mechanism is used for protecting the joint of the wellhead valve, the outer wall of the adjusting mechanism is in sliding connection with the top of the auxiliary mechanism, the wellhead valve plays a certain role in buffering fluid when the flow is large, and the situation that the service life of the valve is affected due to the fact that the inner wall and parts of the valve body are scoured due to excessive gravel content is avoided, and large impurities are intercepted; meanwhile, fluid is prevented from being blocked in the valve body, accidents caused by too large pressure are avoided, and the situation that the throttling and sealing effects of the valve are affected due to the fact that the valve rod is inconvenient to rotate or cannot rotate due to rusting between the valve rod and the valve body is avoided.

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 valve is a wellhead sealing valve pipeline accessory with adjustable oil output. It is a control component in the fluid delivery system and has the functions of shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. It is widely used in industrial production processes such as chemical, petroleum, metallurgy, mining, electricity, energy, and environmental protection. It is used to connect pressure gauges, measure and manage pressure, and control the pipeline of the conveying medium as needed; When the wellhead valve encounters high erosion, high pressure difference and high sand content 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, greatly shortening 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 turn, which is not conducive to quick adjustment. Summary of the invention

[0003] In view of the shortcomings of the prior art, the technical solution adopted by the present invention to solve the technical problem is: the wellhead sealing valve with adjustable oil output described in the present invention comprises a valve seat; 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; The sealing valve also includes a filtering mechanism and an adjusting mechanism; 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 with 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; The adjusting mechanism is used to protect the connection of the wellhead valve, and the outer wall of the adjusting mechanism is slidably connected with the top of the auxiliary mechanism.

[0004] Preferably, the auxiliary mechanism comprises 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 with 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 with a fixing ring, the inside 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 with a sealing assembly; 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 component, and the inner wall of the protective component is slidably connected to the outer wall of the valve body; 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, reduce the impact force on the valve core, and extend the service life of the valve core.

[0005] Preferably, the sealing assembly includes a first telescopic column, an outer wall of the first telescopic column is fixedly connected to the inner wall of the valve body, an end of the first telescopic column away from the valve body is fixedly connected to a top block, an end of 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 is in contact with the inner wall of the fixing groove close to the valve body end, a rubber ring is fixedly connected to the end of the fixing groove away from the top block, and the outer wall of the top block away from the first telescopic column is in contact with 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.

[0006] 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 with a first stopper, the top of the first stopper is fixedly connected with 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 with a second stopper, the bottom of the second stopper contacts with the bottom of the rotating plate, which plays a certain buffering effect 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.

[0007] Preferably, the discharge assembly includes a collection box, the top of the collection box is fixedly connected to the bottom of the liquid inlet pipe, the bottom of the inner wall of the collection box is fixedly connected to a lifting column, the top of the lifting column is fixedly connected to a piston plate, the top of the piston plate is evenly provided with a scraper strip, the bottom of the scraper strip is fixedly connected to the top of the piston plate, the top of the piston plate is evenly provided with a second telescopic rod, the bottom of the second telescopic rod is fixedly connected to the inner wall of the piston plate, the top of the second telescopic rod is fixedly connected to a plugging head, the bottom of the inner wall of the collection box is fixedly connected to a connecting pipe at one end away from the lifting column, the bottom of the collection box is fixedly connected to a bottom plate, and the top of the bottom plate is fixedly connected to a column to ensure the sealing effect, and after the collection is completed, it will be lowered again to discharge, filter the sand and gravel in the fluid, reduce the blockage of sand and gravel in the valve body, discharge the intercepted sand and gravel, and at the same time ensure the sealing effect inside the valve body, reduce maintenance costs, and reduce the maintenance work of staff.

[0008] Preferably, the protection 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, and a containing groove is provided inside the lower cover shell, the outer wall of the containing 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 hand wheel, the outer wall of the hand wheel is sleeved with the inner wall of the upper cover shell to isolate the rotating part from the external environment, and a desiccant is loaded in the containing 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 effects of the valve.

[0009] The beneficial effects of the present invention are as follows: 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 relatively large, 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 also avoids the fluid from being blocked inside the valve body, avoiding accidents caused by excessive pressure.

[0010] 2. The present invention sets a discharge component, and the column blocks the plugging head, so that the second telescopic rod is extended, so that a gap is generated between the plugging head and the piston plate, and 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 strip scrapes off the debris adhered to the inner wall of the collection box. The scraper strip 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, and the intercepted sand and gravel are discharged. 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.

[0011] 3. The present invention isolates the rotating part from the external environment by providing a protective component, and loads desiccant into the containing groove to prevent the valve stem from being 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 groove is moved by hand, the hole at the bottom of the containing groove is aligned with the hole at the bottom of the lower cover shell to allow the desiccant to flow out, and then new desiccant is reloaded and the upper cover shell is installed.

[0012] 4. The present invention arranges a sealing component to deform the rubber ring, which is in 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 when the valve core moves with the inner wall of the valve body, causing wear on the wellhead valve, affecting the service life and the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the present invention as a whole; Figure 3 It is a structural schematic diagram of the auxiliary mechanism of the present invention; Figure 4 is a rear view of the filter mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the filtering mechanism of the present invention; Figure 6 It is a structural schematic diagram of the adjustment mechanism of the present invention; Figure 7 is a schematic structural diagram of the sealing assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the discharge assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the protection component of the present invention; In the 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. collecting box; 3092. lifting column; 3093. piston plate; 3094. scraper; 3095. second telescopic rod; 3096. plugging head; 3097. connecting pipe; 3098. bottom plate; 3099. column; 310. second stopper; 4. adjustment mechanism; 401. valve core; 402. movable rod; 403. outer shell; 404. valve stem; 405. protective assembly; 4051. upper cover shell; 4052. push rod; 4053. lower cover shell; 4054. sealing ring; 4055. holding tank; 406. hand wheel. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0015] Example 1, using Figure 1-Figure 6 A wellhead sealing valve with adjustable oil output according to an embodiment of the present invention is described as follows.

[0016] like Figure 1-Figure 6 As shown, the wellhead sealing valve with adjustable oil output according to the present invention comprises a valve seat 1; Auxiliary mechanism 2, the auxiliary mechanism 2 is used to assist throttling and protect the inside of the wellhead valve, and the bottom of the auxiliary mechanism 2 is fixedly connected to the top of the valve seat 1; The sealing valve also includes a filtering mechanism 3 and an adjusting mechanism 4; 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 with a sieve plate 302, the bottom of the sieve plate 302 is provided with a rotating plate 305, 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 adjusting mechanism 4, which 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; When in use, the wellhead valve as a whole is fixedly supported by the valve seat 1, and the 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 with the auxiliary mechanism 2. After the regulating mechanism 4 is closed, the impurities inside the filtering mechanism 3 are cleaned and discharged.

[0017] 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, the inner wall of the valve body 201 at one end away from the base is threadedly connected with an adjusting nut 202, the top of the inner wall of the valve body 201 is evenly provided with a first telescopic rod 203, the bottom of the first telescopic rod 203 is fixedly connected with a fixing ring 204, the inside of the fixing ring 204 is evenly provided with a hydraulic rod 205, the outer wall of the hydraulic rod 205 is fixedly connected to the inner wall of the fixing ring 204, and the inner wall of the valve body 201 close to the valve seat 1 is fixedly connected with a sealing assembly 206; 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; The auxiliary mechanism 2 is used in conjunction with the adjustment mechanism 4. The length of the valve stem 404 is manually adjusted by rotating the protective component 405. The protective component 405 protects the portion 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.

[0018] The sealing assembly 206 facilitates better sealing between the valve core 401 and the valve body 201, strengthens the sealing effect of the wellhead valve, reduces the friction of the valve core 401, and prolongs the service life of the valve core 401. When the valve stem 404 extends to drive the valve core 401 to move downward, the first telescopic rod 203 extends to drive the fixing ring 204 to move downward, and then the hydraulic rod 205 extends to press the outer wall of the valve stem 404, and a support is added to the valve stem 404 from the middle to play a protective role, so as to prevent 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; When the valve core 401 moves downward, the shell 403 first contacts the surface of the sealing assembly 206, and fillers are filled between the shell 403 and the valve core 401. During the flow of the fluid, the shell 403 is impacted first, and the fillers are used to buffer the fluid, reduce the impact force on the valve core 401, and extend the service life of the valve core 401.

[0019] The filter mechanism 3 further includes a discharge assembly 309, the top of which is fixedly connected to the bottom of the liquid inlet pipe 301, a first stopper 306 is fixedly connected to one end of the inner wall of the discharge assembly 309 close to the valve body 201, a spring 307 is fixedly connected to the top of the first stopper 306, a second telescopic column 308 is arranged 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, a second stopper 310 is fixedly connected to one end of the inner wall of the discharge assembly 309 away from the first stopper 306, and the bottom of the second stopper 310 contacts the bottom of the rotating plate 305; The fluid enters the valve through the liquid inlet pipe 301, passes through the sieve plate 302 first, and screens out large pieces of debris, which are then deposited 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 to clean the debris into the discharge component 309. When the flow rate decreases, the slider 303 drives the cleaning rod 304 to rotate to 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. When the flow rate is high, the second telescopic column 308 extends out 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 of the liquid inlet pipe 301 where the sieve plate 302 is installed 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 avoiding the fluid from being blocked inside the valve body 201, avoiding accidents caused by excessive pressure.

[0020] The specific workflow is as follows: During operation, the wellhead valve as a whole is fixedly supported by the valve seat 1, and the 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 retains large impurities inside the filtering mechanism 3 and stores them inside the filtering mechanism 3. The regulating mechanism 4 adjusts the flow rate of the fluid by adjusting the distance with the auxiliary mechanism 2. After the regulating mechanism 4 is closed, the impurities inside the filtering mechanism 3 are cleaned and discharged.

[0021] Embodiment 2, use Figure 1-Figure 9 A wellhead sealing valve with adjustable oil output according to an embodiment of the present invention is described as follows.

[0022] like Figure 1-Figure 9 As shown, a wellhead sealing valve with adjustable oil output according to the present invention, based on the first embodiment, a sealing component 206 comprises 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 end of the first telescopic column 2061 is in contact with an inner wall of the rubber ring 2064; When the valve stem 404 extends to drive the valve core 401 close to the sealing assembly 206 and intercept the fluid, it first contacts the rubber ring 2064. At this time, the first telescopic column 2061 extends to drive 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 with the inner wall of the valve body 201, causing wear on the wellhead valve, affecting the service life and the sealing effect.

[0023] 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 is fixedly connected to the bottom of the inner wall of the collecting box 3091, a piston plate 3093 is fixedly connected to the top of the lifting column 3092, a scraper 3094 is evenly arranged on the top of the piston plate 3093, the bottom of the scraper 3094 is fixedly connected to the top of the piston plate 3093, 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, a plug 3096 is fixedly connected to the top of the second telescopic rod 3095, a connecting pipe 3097 is fixedly connected to one 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 is fixedly connected to a bottom plate 3098, and a column 3099 is fixedly connected to the top of the bottom plate 3098; When the oil passes through the liquid inlet pipe 301, the lifting column 3092 drives the piston plate 3093 to rise and approach the liquid inlet pipe 301, and the screen 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 to stop the oil delivery. Then the lifting column 3092 drives the piston plate 3093 to descend 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, where 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 bar 3094 scrapes off the debris adhering to the inner wall of the collection box 3091. The scraper bar 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 maintenance work of the staff.

[0024] The protection component 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 arranged on the top of the lower cover shell 4053, the bottom of the upper cover shell 4051 is snap-fitted with 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 is in contact with the top of the valve stem 404, a containing groove 4055 is arranged inside the lower cover shell 4053, the outer wall of the containing 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; When installing the valve, the lower cover shell 4053 is installed on the outer wall of the valve body 201, and the upper cover shell 4051 is buckled on the top of the lower cover shell 4053. The sealing ring 4054 makes the upper cover shell 4051 and the lower cover shell 4053 tightly connected, and the outer wall of the hand wheel 406 is clamped between the upper cover shell 4051 and the lower cover shell 4053. When the staff turns the hand wheel 406, the upper cover shell 4051 and the lower cover shell 4053 rotate accordingly, isolating the rotating part from the external environment, and Desiccant is loaded into the receiving groove 4055 to prevent the valve stem 404 from being 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 shell 4051 is removed, the receiving groove 4055 is moved by hand, and the hole at the bottom of the receiving groove 4055 is aligned with the hole at the bottom of the lower cover shell 4053 to allow the desiccant to flow out, and then new desiccant is reloaded and the upper cover shell 4051 is installed.

[0025] The specific workflow is as follows: During operation, when the staff member turns the hand wheel 406, the upper cover shell 4051 and the lower cover shell 4053 rotate accordingly, isolating the rotating parts from the external environment, and loading the desiccant into the containing groove 4055. When the oil passes through the liquid inlet pipe 301, the lifting column 3092 drives the piston plate 3093 to rise and approach the liquid inlet pipe 301, and the screen plate 302 filters the debris. During the accumulation of the debris, the piston plate 3093 gradually descends. Since the debris contains oil, it needs to be recycled. The staff member needs to collect the debris inside the collection box 3091. Before discharging, the adjustment mechanism 4 blocks the pipeline to stop the oil delivery, and 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 to approach 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 to drive 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.

[0026] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and 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 inside 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 also includes a filtering mechanism (3) and an adjusting mechanism (4); Wherein, a filtering mechanism (3) is used to filter sediment in a liquid, an outer wall of the filtering mechanism (3) is fixedly connected to an outer wall of the auxiliary mechanism (2), the filtering mechanism (3) comprises a liquid inlet pipe (301), an outer wall of the liquid inlet pipe (301) is fixedly connected to an outer wall of the auxiliary mechanism (2), a sieve plate (302) is fixedly connected to an inner wall of the liquid inlet pipe (301), a rotating plate (305) is provided at the bottom of the sieve plate (302), an outer wall of the rotating plate (305) is rotatably connected to an inner wall of the liquid inlet pipe (301), an end of the sieve plate (302) close to the auxiliary mechanism (2) is slidably connected to a slider (303), and an end of the slider (303) close to the sieve plate (302) is rotatably connected to a cleaning rod (304); An adjustment mechanism (4) is used to protect the connection of a wellhead valve, and an outer wall of the adjustment mechanism (4) is slidably connected to the top of the auxiliary mechanism (2).

2. A wellhead sealing valve with adjustable oil output according to claim 1, characterized in that: 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 one end of the inner wall of the valve body (201) close to the valve seat (1).

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

4. The wellhead sealing valve with adjustable oil output according to claim 2, characterized in that: The filtering mechanism (3) further comprises a discharge component (309), the top of the discharge component (309) being fixedly connected to the bottom of the liquid inlet pipe (301), the inner wall of the discharge component (309) being fixedly connected to an end close to the valve body (201) with a first stopper (306), the top of the first stopper (306) being fixedly connected to a spring (307), a second telescopic column (308) being arranged 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), the inner wall of the discharge component (309) being fixedly connected to an end away from the first stopper (306), the bottom of the second stopper (310) being in contact with the bottom of the rotating plate (305).

5. The wellhead sealing valve with adjustable oil output according to claim 4, characterized in that: The discharge assembly (309) comprises a collection box (3091), the top of the collection box (3091) being fixedly connected to the bottom of the liquid inlet pipe (301), the bottom of the inner wall of the collection box (3091) being fixedly connected to a lifting column (3092), the top of the lifting column (3092) being fixedly connected to a piston plate (3093), the top of the piston plate (3093) being evenly provided with scraping strips (3094), the bottom of the scraping strips (3094) being fixedly connected to the top of the piston plate (3093).

6. The wellhead sealing valve with adjustable oil output according to claim 5, characterized in that: The top of the piston plate (3093) is evenly provided with a second telescopic rod (3095), 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).

7. The wellhead sealing valve with adjustable oil output according to claim 2, characterized in that: The adjustment mechanism (4) comprises 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).

8. The wellhead sealing valve with adjustable oil output according to claim 7, characterized in that: The protective component (405) comprises 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).

9. The wellhead sealing valve with adjustable oil output according to claim 8, characterized in that: A push rod (4052) is fixedly connected to the top of the inner wall of the upper cover shell (4051), and the bottom of the push rod (4052) is in contact with the top of the valve stem (404). A receiving groove (4055) is provided inside the lower cover shell (4053), and 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).

Images