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 present application relates to the technical field of wellhead gate valves, and specifically relates to a wellhead sealing valve with adjustable oil output. BACKGROUND

[0002] The wellhead valve is a wellhead sealing valve pipeline accessory with adjustable oil output, and is a control component in a fluid conveying system, and has the functions of cutting off, regulating, guiding flow, preventing backflow, stabilizing pressure, shunting or overflow pressure relief, etc. The wellhead valve is widely used in industrial production processes such as chemical industry, petroleum, metallurgy, mining, electric power, energy and environmental protection, and is used to connect pressure gauges, measure and manage pressure, and control the pipeline conveying medium as needed. When the wellhead valve is used in high-erosion, high-pressure-difference and high-sand-containing working conditions, the high-speed sand-containing fluid directly washes the internal elements of the valve body, causing a lot of noise in the valve body, serious erosion of the components, and greatly shortened service life of the valve. The wellhead valve is usually exposed to the outdoor environment, and long-term exposure to sunlight and rain can cause water to enter the top of the valve stem and rust, resulting in the hand wheel being unable to rotate, which is not conducive to rapid adjustment. SUMMARY

[0003] In view of the deficiencies of the prior art, the technical scheme adopted by the present application to solve the technical problems is that the present application relates to a wellhead sealing valve with adjustable oil output, which comprises a valve seat; An auxiliary mechanism is arranged on the valve seat, and the auxiliary mechanism is used for throttling and protecting the inside of the wellhead valve. The sealing valve further comprises a filtering mechanism and an adjusting mechanism. The filtering mechanism is used for filtering the sand in the liquid, and the outer wall of the filtering mechanism is fixedly connected with the outer wall of the auxiliary mechanism. The adjusting mechanism is used for protecting 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 with the top of the valve seat, the inner wall of the end of the valve body away from the base is threadedly connected with an adjusting nut, the top of the inner wall of the valve body is uniformly 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 uniformly provided with a hydraulic rod, the outer wall of the hydraulic rod is fixedly connected with the inner wall of the fixing ring, the inner wall of the end of the valve body close to the valve seat is fixedly connected with a sealing assembly; The adjusting mechanism comprises a valve core, the top of the valve core is fixedly connected with a valve rod, the bottom of the valve core is fixedly connected with 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 with a shell, the inner wall of the end of the shell away from the movable rod is slidably connected with the outer wall of the valve rod, the top of the valve rod is fixedly connected with a protection assembly, the inner wall of the protection assembly is slidably connected with the outer wall of the valve body; The protection assembly protects the part of the valve rod exposed to the environment from rusting, which causes the protection assembly to be unable to rotate, the protection assembly is rotated to drive the valve rod to be elongated, the valve core is close to the sealing assembly, the distance between the valve core and the sealing assembly is adjusted to control the size of the adjusting flow, a support is additionally arranged in the middle of the valve rod, which plays a protection role, avoids that the valve rod is impacted by too large flow velocity, and easily causes the valve rod and the valve core to be broken, reduces the impact force received by the valve core, and prolongs the service time of the valve core.

[0005] Preferably, the sealing assembly comprises a first telescopic column, the outer wall of the first telescopic column is fixedly connected with the inner wall of the valve body, the end of the first telescopic column away from the valve body is fixedly connected with a top block, the end of the inner wall of the valve body close to the first telescopic column is fixedly connected with a fixing groove, the outer wall of the top block is in contact with the inner wall of the end of the fixing groove close to the valve body, the end of the fixing groove away from the top block is fixedly connected with a rubber ring, and the outer wall of the end of the top block away from the first telescopic column is in contact with the inner wall of the rubber ring, which strengthens the sealing effect, avoids that the shell and the inner wall of the valve body are rubbed with each other during movement of the valve core and the inner wall of the valve body, causes wear of the wellhead valve, and affects the service life and the sealing effect.

[0006] Preferably, the filtering mechanism further comprises an exhaust assembly, the top of the exhaust assembly is fixedly connected with the bottom of the liquid inlet pipe, a first stopper is fixedly connected with the inner wall of the exhaust assembly and close to one end of the valve body, the top of the first stopper is fixedly connected with a spring, the inside of the spring is provided with a second telescopic column, the top of the second telescopic column is rotationally connected with the bottom of the rotating plate, the top of the spring is fixedly connected with the bottom of the rotating plate, the inner wall of the exhaust assembly is fixedly connected with a second stopper away from one end of the first stopper, the bottom of the second stopper is in contact with the bottom of the rotating plate, the fluid with large flow rate is buffered to a certain extent, the sand content is prevented from being too high to cause erosion of the inner wall of the valve body and parts, the service life of the valve is affected, large impurities are intercepted, the fluid is prevented from being blocked in the valve body, and accidents caused by excessive pressure are avoided.

[0007] Preferably, the exhaust assembly comprises a collecting box, the top of the collecting box is fixedly connected with the bottom of the liquid inlet pipe, the bottom of the inner wall of the collecting box is fixedly connected with a lifting column, the top of the lifting column is fixedly connected with a piston plate, the top of the piston plate is uniformly provided with a scraping strip, the bottom of the scraping strip is fixedly connected with the top of the piston plate, the top of the piston plate is uniformly provided with a second telescopic rod, the bottom of the second telescopic rod is fixedly connected with the inner wall of the piston plate, the top of the second telescopic rod is fixedly connected with a blocking head, the bottom of the inner wall of the collecting box is fixedly connected with a connecting pipe away from one end of the lifting column, the bottom of the collecting box is fixedly connected with a bottom plate, the top of the bottom plate is fixedly connected with a stand column, the sealing effect is ensured, the fluid is discharged after being collected again, the sand in the fluid is filtered, the sand is prevented from being blocked in the valve body, the sand intercepted is discharged, the sealing effect in the valve body is ensured, the maintenance cost is reduced, and the work of the staff is reduced.

[0008] Preferably, the protection assembly comprises a lower housing, the inner wall of the lower housing is in sliding connection with the outer wall of the valve body, the top of the lower housing is fixedly connected with a sealing ring, the top of the lower housing is provided with an upper housing, the bottom of the upper housing is clamped with the top of the lower housing, the top of the inner wall of the upper housing is fixedly connected with a top rod, the bottom of the top rod is in contact with the top of the valve rod, the inside of the lower housing is provided with a containing groove, the outer wall of the containing groove is in rotation connection with the inner wall of the lower housing, the outer wall of the valve rod is fixedly connected with a hand wheel, the outer wall of the hand wheel is sleeved with the inner wall of the upper housing, the rotating part is isolated from the external environment, the drying agent is filled in the containing groove, the valve rod is prevented from being inconvenient to rotate or unable to rotate due to rust between the valve rod and the valve body, and the throttling and sealing effects of the valve are affected.

[0009] The beneficial effects of the present application are as follows: 1. The present application sets up a filtering mechanism, the inside of the liquid inlet pipe is installed with a sieve plate, the diameter of the sieve plate is larger, and the sieve plate can buffer the fluid when the flow is larger, avoid too much sand and stone content, cause erosion to the inner wall of the valve body and parts, affect the service life of the valve, retain large impurities, and also avoid the fluid being blocked in the valve body, avoid accidents caused by too large pressure.

[0010] 2. The present application sets up a discharge assembly, the stand blocks the plug head, the second telescopic rod is extended, the gap between the plug head and the piston plate is generated, the sand particles containing oil flow to the outside through the connecting pipe, the staff collects and recycles them, after the impurities are discharged, the lifting column drives the piston plate to rise again, the scraping strip scrapes the impurities adhered to the inner wall of the collection box, the scraping strip is in close contact with the inner wall of the collection box, the sealing effect is guaranteed, after the collection is completed, the discharge is lowered again, the sand and stone in the fluid are filtered, the blocking of the sand and stone in the valve body is reduced, the sand and stone retained are discharged, the sealing effect in the valve body is guaranteed, the maintenance cost is reduced, and the work of the staff is reduced.

[0011] 3. The present application sets up a protection assembly, the rotating part is isolated from the external environment, and a drying agent is loaded in the holding tank, rust between the valve rod and the valve body is avoided, the valve rod is not inconvenient to rotate or cannot rotate, the throttling and sealing effects of the valve are affected, when the drying agent needs to be replaced, the upper cover is removed, the holding tank is rotated by hand, the hole at the bottom of the holding tank is aligned with the hole at the bottom of the lower cover, the drying agent flows out, then new drying agent is loaded, and the upper cover is installed.

[0012] 4. The present application sets up a sealing assembly, the rubber ring is deformed, the rubber ring is in close contact with the shell outside the valve core, and the sealing effect is strengthened, meanwhile, in the process that the valve core moves with the inner wall of the valve body, the shell and the inner wall of the valve body are prevented from generating large friction, wear of the wellhead valve is avoided, the service life is affected, and the sealing effect is affected. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of the whole application; Figure 2 It is a sectional view of the whole application; Figure 3 It is a structure schematic view of the auxiliary mechanism of the application; Figure 4 It is a rear view of the filtering mechanism of the application; Figure 5 It is a structure schematic view of the filtering mechanism of the application; Figure 6 It is a structure schematic view of the adjusting mechanism of the application; Figure 7 It is a structure schematic view of the sealing assembly of the application; Figure 8 This is a schematic diagram of the structure of the discharge component of the present invention; Figure 9 This is a schematic diagram of the structure of the protective component of the present invention; In the diagram: 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. Filtration mechanism; 301. Inlet pipe; 302. Sieve plate; 303. Slider; 304. Cleaning rod; 305. Rotating plate; 306. First stop block; 307. Spring; 308. Second telescopic column; 309. Discharge assembly; 091. Collection box; 3092. Lifting column; 3093. Piston plate; 3094. Scraper; 3095. Second telescopic rod; 3096. Plug head; 3097. Connecting pipe; 3098. Base plate; 3099. Column; 310. Second stop block; 4. Adjustment mechanism; 401. Valve core; 402. Movable rod; 403. Housing; 404. Valve stem; 405. Protective component; 4051. Upper cover; 4052. Top rod; 4053. Lower cover; 4054. Sealing ring; 4055. Container trough; 406. Handwheel. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0015] Example 1, using Figures 1-6 An embodiment of the present invention provides a wellhead sealing valve with adjustable oil production as follows.

[0016] like Figures 1-6 As shown, the wellhead sealing valve with adjustable oil production capacity according to the present invention includes a valve seat 1; Auxiliary mechanism 2 is used to assist in 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. The sealing valve also includes a filter mechanism 3 and an adjustment mechanism 4; The filter mechanism 3 is used for filtering silt in the liquid, the outer wall of the filter mechanism 3 is fixedly connected with the outer wall of the auxiliary mechanism 2, the filter mechanism 3 comprises a liquid inlet pipe 301, the outer wall of the liquid inlet pipe 301 is fixedly connected with 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 rotationally connected with the inner wall of the liquid inlet pipe 301, the end close to the auxiliary mechanism 2 of the sieve plate 302 is slidably connected with a sliding block 303, and the end close to the sieve plate 302 of the sliding block 303 is rotationally connected with a cleaning rod 304; The adjusting mechanism 4 is used for protecting the connecting part of the wellhead valve, and the outer wall of the adjusting mechanism 4 is slidably connected with the top of the auxiliary mechanism 2; In use, the wellhead valve is fixed and supported by the valve seat 1, the oil enters the auxiliary mechanism 2 through the filter mechanism 3, the filter mechanism 3 buffers the pressure of the fluid when encountering high erosion, high pressure difference and high sand content, and retains large impurities in the filter mechanism 3, the adjusting mechanism 4 adjusts the flow of the fluid by adjusting the distance between the adjusting mechanism 4 and the auxiliary mechanism 2, and the impurities in the filter mechanism 3 are cleaned and discharged after the adjusting mechanism 4 is closed.

[0017] The auxiliary mechanism 2 comprises a valve body 201, the bottom of the valve body 201 is fixedly connected with the top of the valve seat 1, the inner wall of the end, away from the base, of the valve body 201 is threadedly connected with an adjusting nut 202, the top of the inner wall of the valve body 201 is uniformly 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 uniformly provided with a hydraulic rod 205, the outer wall of the hydraulic rod 205 is fixedly connected with 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 adjusting mechanism 4 comprises a valve core 401, the top of the valve core 401 is fixedly connected with a valve rod 404, the bottom of the valve core 401 is fixedly connected with 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 with an outer shell 403, the inner wall of the end, away from the movable rod 402, of the outer shell 403 is slidably connected with the outer wall of the valve rod 404, the top of the valve rod 404 is fixedly connected with a protection assembly 405, and the inner wall of the protection assembly 405 is slidably connected with the outer wall of the valve body 201; The auxiliary mechanism 2 and the adjusting mechanism 4 are used in cooperation, the length of the valve rod 404 is adjusted by rotating the protection assembly 405 manually, the part of the valve rod 404 exposed in the environment is protected by the protection assembly 405, so that the valve rod 404 is prevented from rusting and the protection assembly 405 is prevented from being unable to rotate, the protection assembly 405 is rotated to elongate the valve rod 404, the valve core 401 is close to the sealing assembly 206, and the distance between the valve core 401 and the sealing assembly 206 is adjusted to control the size of the adjusting flow.

[0018] The sealing assembly 206 facilitates better sealing between the valve core 401 and the valve body 201, enhances 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. During the extension of the valve rod 404 to drive the valve core 401 to move downward, the first telescopic rod 203 extends to drive the fixed ring 204 to move downward, and then the hydraulic rod 205 extends to press the outer wall of the valve rod 404, thereby adding a support to the valve rod 404 in the middle to play a protective role, avoiding excessive impact force on the valve rod 404 due to large flow rate, which can easily cause the valve rod 404 and the valve core 401 to break. During the downward movement of the valve core 401, the outer shell 403 first contacts the surface of the sealing assembly 206, and the outer shell 403 is filled with packing between the valve core 401. The packing is used to buffer the fluid during fluid flow, reduce the impact force on the valve core 401, and prolong the service life of the valve core 401.

[0019] The filtering mechanism 3 further comprises a discharge assembly 309, the top of the discharge assembly 309 is fixedly connected with the bottom of the liquid inlet pipe 301, the inner wall of the discharge assembly 309 is fixedly connected with a first stop block 306 at one end close to the valve body 201, the top of the first stop block 306 is fixedly connected with a spring 307, the inside of the spring 307 is provided with a second telescopic column 308, the top of the second telescopic column 308 is rotatably connected with the bottom of the rotating plate 305, the top of the spring 307 is fixedly connected with the bottom of the rotating plate 305, the inner wall of the discharge assembly 309 is fixedly connected with a second stop block 310 at one end away from the first stop block 306, and the bottom of the second stop block 310 is in contact with the bottom of the rotating plate 305; The fluid enters the valve through the liquid inlet pipe 301, first passes through the sieve plate 302, and the large impurities are screened out and accumulated on the top of the rotating plate 305. When the amount reaches a certain amount, the rotating plate 305 rotates due to gravity and cleans the impurities into the discharge assembly 309. When the flow rate decreases, the sliding block 303 drives the cleaning rod 304 to rotate to clean the impurities on the surface of the sieve plate 302. The rotating plate 305 can only rotate in one direction. When there are many impurities, the rotating plate 305 is rotated by gravity and falls into the discharge assembly 309. When there are fewer impurities, the second telescopic column 308 extends to drive the rotating plate 305 to rotate, and the cleaning rod 304 scrapes the impurities on the sieve plate 302 into the discharge assembly 309. The part of the liquid inlet pipe 301 where the sieve plate 302 is installed has a larger diameter, which can buffer the fluid when the flow rate is large, avoid excessive sand content from causing erosion of the inner wall of the valve body 201 and parts, affect the service life of the valve, and also avoid the fluid being blocked in the valve body 201, thereby avoiding accidents caused by excessive pressure.

[0020] The specific working process is as follows: In work, the wellhead valve is fixed and supported by the valve seat 1 as a whole, oil enters the auxiliary mechanism 2 through the filtering mechanism 3, the filtering mechanism 3 reduces the pressure of the fluid and makes the large impurities be retained in the filtering mechanism 3 when encountering high erosion, high pressure difference and high sand content working conditions, and the impurities in the filtering mechanism 3 are stored in the filtering mechanism 3, the adjusting mechanism 4 adjusts the flow of the fluid by adjusting the distance with the auxiliary mechanism 2, and the impurities in the filtering mechanism 3 are cleaned and discharged after the adjusting mechanism 4 is closed.

[0021] Embodiment two, using Figures 1-9 An oil outlet adjustable wellhead sealing valve according to an embodiment of the present application is described as follows.

[0022] As shown in Figures 1-9 The oil outlet adjustable wellhead sealing valve according to the present application, based on embodiment one, the sealing assembly 206 includes a first telescopic column 2061, the outer wall of the first telescopic column 2061 is fixedly connected with 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 with a top block 2062, the inner wall of the valve body 201 close to the end of the first telescopic column 2061 is fixedly connected with a fixed groove 2063, the outer wall of the top block 2062 is in contact with the inner wall of the fixed groove 2063 close to the end of the valve body 201, the end of the fixed groove 2063 away from the top block 2062 is fixedly connected with a rubber ring 2064, and the outer wall of the end of the top block 2062 away from the first telescopic column 2061 is in contact with the inner wall of the rubber ring 2064. When the valve stem 404 is elongated to drive the valve core 401 to be close to the sealing assembly 206 and to block the fluid, it first contacts the rubber ring 2064, at this time, the first telescopic column 2061 is extended to drive the top block 2062 to move outward, so that the rubber ring 2064 is deformed, the rubber ring 2064 is in close contact with the outer shell 403 outside the valve core 401, thereby enhancing the sealing effect, and at the same time, avoiding that the outer shell 403 and the inner wall of the valve body 201 generate large friction in the process of moving the valve core 401 and the inner wall of the valve body 201, causing wear to the wellhead valve, affecting the service life and the sealing effect.

[0023] The discharge assembly 309 comprises a collection box 3091, the top of the collection box 3091 is fixedly connected with the bottom of the liquid inlet pipe 301, the bottom of the inner wall of the collection box 3091 is fixedly connected with a lifting column 3092, the top of the lifting column 3092 is fixedly connected with a piston plate 3093, the top of the piston plate 3093 is uniformly provided with a scraping strip 3094, the bottom of the scraping strip 3094 is fixedly connected with the top of the piston plate 3093, the top of the piston plate 3093 is uniformly provided with a second telescopic rod 3095, the bottom of the second telescopic rod 3095 is fixedly connected with the inner wall of the piston plate 3093, the top of the second telescopic rod 3095 is fixedly connected with a plug head 3096, the bottom of the inner wall of the collection box 3091 is fixedly connected with a connecting pipe 3097 away from one end of the lifting column 3092, the bottom of the collection box 3091 is fixedly connected with a bottom plate 3098, the top of the bottom plate 3098 is fixedly connected with a stand column 3099; 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 sundries, and the piston plate 3093 gradually descends in the process of accumulating sundries, and since the sundries contain oil, it is necessary to recycle, and the staff needs to collect the sundries in the collection box 3091, before discharging, the adjusting mechanism 4 blocks the pipe to stop conveying oil, and then the lifting column 3092 drives the piston plate 3093 to descend to contact the connecting pipe 3097, at this time the plug head 3096 contacts the stand column 3099, and the stand column 3099 blocks the plug head 3096, so that the second telescopic rod 3095 extends, so that a gap is formed between the plug head 3096 and the piston plate 3093, and the sand containing oil flows to the outside through the connecting pipe 3097, and the staff collects it for recycling, after discharging the impurities, the lifting column 3092 drives the piston plate 3093 to rise again, and the scraping strip 3094 scrapes off the sundries adhered to the inner wall of the collection box 3091, the scraping strip 3094 is in close contact with the inner wall of the collection box 3091 to ensure the sealing effect, and after the collection is completed, the piston plate 3093 is lowered again to discharge, the sand and stone in the fluid are filtered, the sand and stone in the valve body 201 are prevented from being blocked, the sand and stone intercepted are discharged, the sealing effect of the valve body 201 is ensured, the maintenance cost is reduced, and the staff's maintenance work is reduced.

[0024] The protection assembly 405 comprises a lower cover 4053, an inner wall of the lower cover 4053 is in sliding connection with an outer wall of the valve body 201, a top of the lower cover 4053 is fixedly connected with a sealing ring 4054, the top of the lower cover 4053 is provided with an upper cover 4051, a bottom of the upper cover 4051 is clamped with the top of the lower cover 4053, a top of an inner wall of the upper cover 4051 is fixedly connected with a top rod 4052, a bottom of the top rod 4052 is in contact with a top of the valve rod 404, an inner part of the lower cover 4053 is provided with a containing groove 4055, an outer wall of the containing groove 4055 is in rotating connection with an inner wall of the lower cover 4053, an outer wall of the valve rod 404 is fixedly connected with a hand wheel 406, the outer wall of the hand wheel 406 is sleeved with the inner wall of the upper cover 4051; When installing the valve, the lower cover 4053 is installed on the outer wall of the valve body 201, the upper cover 4051 is buckled on the top of the lower cover 4053, the sealing ring 4054 tightly connects the upper cover 4051 and the lower cover 4053, and the outer wall of the hand wheel 406 is clamped between the upper cover 4051 and the lower cover 4053, when the staff rotates the hand wheel 406, the upper cover 4051 and the lower cover 4053 rotate with the rotating part being isolated from the external environment, and the containing groove 4055 is filled with drying agent, so that the valve rod 404 and the valve body 201 are not rusted, the rotation of the valve rod 404 is not inconvenient or cannot be rotated, thereby affecting the throttling and sealing effect of the valve, when the drying agent needs to be replaced, the upper cover 4051 is removed, the containing groove 4055 is manually moved, the hole at the bottom of the containing groove 4055 is aligned with the hole at the bottom of the lower cover 4053, the drying agent is discharged, then new drying agent is filled, and the upper cover 4051 is installed.

[0025] The specific working process is as follows: When working, when the staff rotates the hand wheel 406, the upper cover 4051 and the lower cover 4053 follow the rotation, the rotating part is isolated from the external environment, and the drying agent is loaded in the holding groove 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 impurities. In the process of impurity accumulation, the piston plate 3093 gradually descends. Because the impurities contain oil, they need to be recycled. The staff needs to collect the impurities in the collection box 3091. Before discharging, the adjusting mechanism 4 blocks the pipe to stop conveying oil, and then the lifting column 3092 drives the piston plate 3093 to descend to contact the connecting pipe 3097. At this time, the plug head 3096 contacts the stand 3099, and the stand 3099 blocks the plug head 3096, so that the second telescopic rod 3095 extends, and the gap between the plug head 3096 and the piston plate 3093 is generated. The sand containing oil 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 rod 404 is elongated to drive the valve core 401 to approach the sealing assembly 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, so that the rubber ring 2064 is deformed. The rubber ring 2064 is in close contact with the outer shell 403 outside the valve core 401, and the fluid is stopped.

[0026] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. An adjustable oil outlet wellhead sealing valve, comprising: a valve seat (1); an auxiliary mechanism (2) for throttling and protecting the inside of the wellhead valve, the bottom of the auxiliary mechanism (2) being fixedly connected with the top of the valve seat (1); characterized in that the sealing valve further comprises a filtering mechanism (3) and an adjusting mechanism (4); wherein the filtering mechanism (3) is used for filtering the silt in the liquid, the outer wall of the filtering mechanism (3) being fixedly connected with the outer wall of the auxiliary mechanism (2), the filtering mechanism (3) comprising a liquid inlet pipe (301), the outer wall of the liquid inlet pipe (301) being fixedly connected with the outer wall of the auxiliary mechanism (2), the inner wall of the liquid inlet pipe (301) being fixedly connected with a sieve plate (302), the bottom of the sieve plate (302) being provided with a rotating plate (305), the outer wall of the rotating plate (305) being rotatably connected with the inner wall of the liquid inlet pipe (301), the end of the sieve plate (302) close to the auxiliary mechanism (2) being slidingly connected with a sliding block (303), the end of the sliding block (303) close to the sieve plate (302) being rotatably connected with a cleaning rod (304); the adjusting mechanism (4) is used for protecting the connection of the wellhead valve, the outer wall of the adjusting mechanism (4) being slidingly connected with the top of the auxiliary mechanism (2); the auxiliary mechanism (2) comprises a valve body (201), the bottom of the valve body (201) being fixedly connected with the top of the valve seat (1), the inner wall of the end of the valve body (201) away from the base being threadedly connected with an adjusting nut (202), the top of the inner wall of the valve body (201) being uniformly provided with a first telescopic rod (203), the bottom of the first telescopic rod (203) being fixedly connected with a fixed ring (204), the inside of the fixed ring (204) being uniformly provided with a hydraulic rod (205), the outer wall of the hydraulic rod (205) being fixedly connected with the inner wall of the fixed ring (204), the inner wall of the end of the valve body (201) close to the valve seat (1) being fixedly connected with a sealing assembly (206); the filtering mechanism (3) further comprises a discharge assembly (309), the top of the discharge assembly (309) being fixedly connected with the bottom of the liquid inlet pipe (301), the inner wall of the discharge assembly (309) being fixedly connected with a first stop block (306) at the end close to the valve body (201), the top of the first stop block (306) being fixedly connected with a spring (307), the inside of the spring (307) being provided with a second telescopic column (308), the top of the second telescopic column (308) being rotatably connected with the bottom of the rotating plate (305), the top of the spring (307) being fixedly connected with the bottom of the rotating plate (305), the inner wall of the end of the discharge assembly (309) away from the first stop block (306) being fixedly connected with a second stop block (310), the bottom of the second stop block (310) being in contact with the bottom of the rotating plate (305). The adjusting mechanism (4) comprises a valve core (401), the top of the valve core (401) is fixedly connected with a valve rod (404), the bottom of the valve core (401) is fixedly connected with 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 with an outer shell (403), the inner wall of the outer shell (403) away from the movable rod (402) is slidably connected with the outer wall of the valve rod (404), the top of the valve rod (404) is fixedly connected with a protection assembly (405), the inner wall of the protection assembly (405) is slidably connected with the outer wall of the valve body (201); The sealing assembly (206) comprises a first telescopic column (2061), the outer wall of the first telescopic column (2061) is fixedly connected with the inner wall of the valve body (201), one end of the first telescopic column (2061) away from the valve body (201) is fixedly connected with a top block (2062), the inner wall of the valve body (201) is fixedly connected with a fixed groove (2063) at one end close to the first telescopic column (2061), the outer wall of the top block (2062) is in contact with the inner wall of the fixed groove (2063) at one end close to the valve body (201), the fixed groove (2063) is fixedly connected with a rubber ring (2064) at one end away from the top block (2062), and the outer wall of the top block (2062) at one end away from the first telescopic column (2061) is in contact with the inner wall of the rubber ring (2064). The discharge assembly (309) comprises a collecting box (3091), the top of the collecting box (3091) is fixedly connected with the bottom of the liquid inlet pipe (301), the bottom of the inner wall of the collecting box (3091) is fixedly connected with a lifting column (3092), the top of the lifting column (3092) is fixedly connected with a piston plate (3093), and the top of the piston plate (3093) is uniformly provided with a scraping strip (3094), and the bottom of the scraping strip (3094) is fixedly connected with the top of the piston plate (3093).

2. The adjustable oil output wellhead sealing valve according to claim 1, characterized in that: The top of the piston plate (3093) is uniformly provided with a second telescopic rod (3095), the bottom of the second telescopic rod (3095) is fixedly connected with the inner wall of the piston plate (3093), the top of the second telescopic rod (3095) is fixedly connected with a plug head (3096), the bottom of the collecting box (3091) is fixedly connected with a bottom plate (3098), and the top of the bottom plate (3098) is fixedly connected with a stand column (3099).

3. The adjustable oil output wellhead seal valve of claim 1, wherein: The protection assembly (405) comprises a lower housing (4053), the inner wall of the lower housing (4053) is slidably connected with the outer wall of the valve body (201), the top of the lower housing (4053) is fixedly connected with a sealing ring (4054), the top of the lower housing (4053) is provided with an upper housing (4051), and the bottom of the upper housing (4051) is clamped with the top of the lower housing (4053).

4. The adjustable oil output wellhead seal valve of claim 3, wherein: The top of the inner wall of the upper cover (4051) is fixedly connected with a top rod (4052), the bottom of the top rod (4052) is in contact with the top of the valve rod (404), the inside of the lower cover (4053) is provided with a containing groove (4055), the outer wall of the containing groove (4055) is rotatably connected with the inner wall of the lower cover (4053), and the outer wall of the valve rod (404) is fixedly connected with a hand wheel (406). The outer wall of the hand wheel (406) is sleeved with the inner wall of the upper cover (4051).

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