CN115573683A - Wellhead Christmas tree throttle valve - Google Patents
Wellhead Christmas tree throttle valve Download PDFInfo
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- CN115573683A CN115573683A CN202211394844.XA CN202211394844A CN115573683A CN 115573683 A CN115573683 A CN 115573683A CN 202211394844 A CN202211394844 A CN 202211394844A CN 115573683 A CN115573683 A CN 115573683A
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- 241000191291 Abies alba Species 0.000 title claims description 43
- 240000007643 Phytolacca americana Species 0.000 claims description 65
- 239000010720 hydraulic oil Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000003756 stirring Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 26
- 239000003921 oil Substances 0.000 description 23
- 238000004140 cleaning Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model provides a well head production tree throttle valve, relates to well head production tree technical field, and it specifically includes valve body, case, first spring, restriction pole, rotates wheel, stirring gear and water conservancy diversion subassembly. The rotating wheel is arranged in the accommodating groove, the rotating wheel is rotatably connected with the valve core, and a plurality of first through holes with sequentially increased inner diameters are formed in the rotating wheel; the first through hole can communicate the inflow port and the outflow port; the outer contour of the rotating wheel is provided with wheel teeth; the toggle gear is arranged in the accommodating groove, is positioned at the upper side of the rotating wheel and is meshed with the rotating wheel; the flow guide assembly is positioned between the rotating wheel and the inflow port, and the first through hole is communicated with the inflow port through the flow guide assembly. According to the technical scheme, the size of the inner diameter of the throttling hole can be adjusted under the condition that the valve is not disassembled, and the valve is convenient to use.
Description
Technical Field
The invention relates to the technical field of petroleum machinery, in particular to a wellhead Christmas tree throttling valve used in ocean oil production.
Background
The production tree is a wellhead device for producing petroleum, such as a self-blowing well, a mechanical production well and the like, and is a main device for controlling and regulating oil and gas production at the uppermost part of an oil and gas well. The wellhead Christmas tree throttle valve is used as a main component of a Christmas tree and a manifold, is mainly used for controlling the wellhead yield of an oil well, and has the working pressure level of 20,000psi. The wellhead Christmas tree throttling valve is divided into two types, namely an adjustable wellhead Christmas tree throttling valve and a fixed wellhead Christmas tree throttling valve, the adjustable wellhead Christmas tree throttling valve drives the valve rod to move forward and backward by rotating the hand wheel so as to adjust the opening area of the oil saving nozzle, and the purposes of controlling and adjusting the yield are achieved. The throttle valve of the fixed wellhead Christmas tree achieves the purposes of controlling and adjusting the yield by changing the size of the oil nozzle.
Conventional fixed wellhead christmas tree chokes can be used either only as single fixed wellhead christmas tree chokes or as single adjustable variable wellhead christmas tree chokes. In the actual use process, after the adjustable variable wellhead Christmas tree throttle valve used in the initial stage needs to be completely disassembled, the quantitative wellhead Christmas tree throttle valve is reinstalled to realize the medium-term use, so that the conditions of complex working procedures, easy damage to other parts of the Christmas tree and the like are caused.
Chinese utility model patent CN202022675931.5 discloses a fixed well head production tree throttle valve, include: the flange enables the valve body to be communicated with the pipeline; a T-shaped groove is formed in the valve body, an oil nozzle sleeve is arranged in the T-shaped groove, and an oil nozzle is fixedly arranged in the oil nozzle sleeve; the upper end and the lower end of the oil nozzle sleeve are hermetically installed and fixed with the T-shaped groove through the cooperation effect of the first O-shaped sealing ring and the second O-shaped sealing ring; a union cap is fixedly arranged at the upper end of the valve body, and a sealing ring is arranged at the position where the union cap is contacted with the upper end of a T-shaped groove in the valve body; a plug is arranged inside the union cap, and an elastic retaining ring for a shaft is arranged between the plug and the inner wall of the union cap; the throttle valve of the fixed wellhead Christmas tree achieves the purpose of controlling and adjusting the yield by changing the size of the oil nozzle, and the valve body and the union cap are both made of special hard alloy and are corrosion-resistant and scouring-resistant; in addition, the union cap arranged on the fixed wellhead Christmas tree throttle valve is connected with the valve body by adopting the King of oil, so that the installation and the disassembly are rapid and convenient. The union cap and the oil nozzle need to be detached when the oil nozzle with different apertures is replaced, so that the use is inconvenient.
Chinese patent application CN201811434827.8 discloses a novel practical fixed wellhead christmas tree throttle valve, comprising: a valve body; the valve core assembly is arranged in the valve body; the valve cover assembly is fixedly connected with the valve body; the valve body is provided with a valve core hole, and the inner wall of the valve core hole is provided with an internal thread; the valve core assembly comprises an adjustable variable valve core assembly and a quantitative valve core assembly, wherein external threads are arranged on the outer walls of the valve core assembly and can be replaced with each other and are arranged in a valve core hole of the valve body through threaded connection; when the adjustable variable valve core assembly is arranged in the valve core hole of the valve body, the wellhead-fixed Christmas tree throttling valve is used as the adjustable variable wellhead Christmas tree throttling valve; when the quantitative valve core assembly is arranged in the valve core hole of the valve body, the fixed wellhead Christmas tree throttle valve is used as the quantitative wellhead Christmas tree throttle valve. The valve needs to be disassembled when the throttling aperture of the valve is adjusted, more components are replaced, and the use is inconvenient.
Therefore, how to design a wellhead Christmas tree throttling valve which is convenient for adjusting the size of the throttling hole becomes a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, adapt to the practical requirements and provide a wellhead Christmas tree throttling valve convenient for adjusting the diameter of a throttling hole so as to solve the technical problems.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: a wellhead christmas tree choke valve comprising: a valve body including an inlet port and an outlet port, and through which a fluid flows in a direction from the inlet port to the outlet port; the valve core is arranged in the valve body and can be connected with the valve body in a vertical sliding manner; the inner cavity of the valve body positioned on the upper side of the valve core forms a hydraulic cavity for containing hydraulic oil; an accommodating groove is formed in the valve core; the first spring is arranged on the lower side of the valve core, one end of the first spring is abutted against the valve core, and the other end of the first spring is abutted against the bottom of the inner cavity of the valve body; the limiting rod is arranged on the upper side of the valve core, the lower end of the limiting rod is abutted against the valve core, and the upper end of the limiting rod extends upwards to the outer side of the valve body; the rotating wheel is arranged in the accommodating groove, the rotating wheel is rotatably connected with the valve core, and a plurality of first through holes with sequentially increased inner diameters are formed in the rotating wheel; the first through hole can communicate the inflow port and the outflow port; gear teeth are arranged on the outer contour of the rotating wheel; the poking gear is arranged in the accommodating groove and is positioned on the upper side of the rotating wheel, and the poking gear is meshed with the rotating wheel; and the flow guide assembly is positioned between the rotating wheel and the inflow port, and the first through hole is communicated with the inflow port through the flow guide assembly.
Furthermore, a second through hole penetrating through the valve core in the horizontal direction is formed in the valve core, and the flow guide assembly is arranged in the second through hole;
the flow guide assembly comprises a guide cylinder and a second spring, one end of the guide cylinder can be communicated with the first through hole, and the other end of the guide cylinder is communicated with the inflow port;
one end of the second spring abuts against the guide cylinder, the other end of the second spring abuts against the valve core, and the second spring is used for providing elastic force for pressing the guide cylinder to the first through hole.
Further, one side of the guide cylinder, which faces the first through hole, is provided with a spherical end part; one side of the first through hole facing the guide cylinder is provided with a concave hole part, and the spherical end part can be abutted against the concave hole part.
Further, the valve core has a first position at the lower side and a second position at the upper side, and when the valve core is at the first position, the second through hole is positioned in the flow passage between the inflow port and the outflow port; when the valve core is located at the second position, the second through hole leaves the flow passage, and the valve core closes the flow passage.
Further, the toggle gear is rotatably connected in the accommodating groove through a rotating shaft; the valve body is provided with a telescopic hole penetrating through the side wall of the valve body, and a poke rod is arranged in the telescopic hole; the middle part of the poking gear is provided with a poking hole, the poking rod can be connected with the poking hole, and the poking gear can be rotated through the poking rod.
Further, when the valve core is located at the second position, the first through hole located at the upper side is aligned with the telescopic hole;
the poke rod can slide along the telescopic hole, and the front end of the poke rod can penetrate into the first through hole.
Furthermore, an air bag is arranged at the front end of the poke rod, a vent hole is arranged in the poke rod, and the vent hole is communicated with the air bag; a concave groove is formed in the front end of the vent hole;
a guide hole is formed in the poke rod, a push rod is arranged in the guide hole, a third spring is arranged at the front end of the push rod, and the guide hole is communicated with the vent hole;
the hole bottom of the poking hole is provided with an accommodating hole.
Furthermore, an operating handle is arranged at the rear end of the poke rod, and a fourth spring is sleeved on the poke rod.
Has the advantages that:
the flange plate arranged outside the inflow port and the outflow port is connected with a pipeline, the hydraulic pipeline is connected with an external hydraulic system, hydraulic oil is introduced into a hydraulic cavity through the hydraulic system, the valve core is pushed to move downwards, the position of the second through hole is just opposite to the middle holes of the inflow port and the outflow port, at the moment, the third through hole is just opposite to the poke rod, the hand-held operating handle drives the poke rod to push towards the direction of the telescopic hole, the poke block is inserted into the poke hole, further, the poke gear can be driven to rotate through the rotating operating handle, the poke gear drives the rotating wheel to rotate, according to different requirements on the medium flow of the oil extraction tree throttle valve through a wellhead, the first through hole with the proper inner diameter is rotated between the inflow port and the outflow port, the spherical end part of the guide cylinder is utilized to realize the positioning on the position of the rotating wheel, at the moment, the first through hole positioned at the top of the poke wheel is positioned in the guide groove, and the sealing strip is arranged on the guide groove in a surrounding mode. When the throttling aperture is adjusted, the first through holes with different inner diameters can be alternately adjusted to be between the inflow port and the outflow port through rotating the poking wheel by a certain angle, so that the requirements for different throttling of media are met.
When the pressure of fluid in the inflow opening is suddenly increased, in order to protect the safety of a pipeline, the hydraulic system controls the pressure of hydraulic oil in the hydraulic cavity to be relieved, the valve core is jacked up through the first spring, and a channel between the inflow opening and the outflow opening is closed through the sealing part. When the valve core is lifted to a certain height, the upper end of the valve core is limited by the sealing cover, at the moment, the position of the fourth through hole is right opposite to the direction of the poking rod, and the first through hole positioned at the uppermost part of the poking wheel is right opposite to the fourth through hole. The poke rod can be pushed towards the fourth through hole again, the air bag is driven to be pushed into the first through hole, and then the back-and-forth pulling of the air bag can clear away attachments in the medium adhered to the inner wall of the first through hole, so that the influence of impurities on the accuracy of the throttling control of the medium is avoided. Through rotating the toggle wheel by different angles, the first through holes at different positions can be cleaned without disassembling the valve.
Drawings
FIG. 1 is a schematic perspective view of a wellhead Christmas tree choke of the present invention;
FIG. 2 is a cross-sectional view of a wellhead Christmas tree choke of the present invention with the valve spool in a first position;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 2;
FIG. 5 is an enlarged view at C of FIG. 3;
FIG. 6 is a schematic structural view of a seal cap of a wellhead Christmas tree choke of the present invention;
FIG. 7 is a schematic view of a first bore of a wellhead tree choke according to the present invention;
FIG. 8 is a cross-sectional view of a wellhead Christmas tree choke of the present invention with the valve spool in a second position;
FIG. 9 is a schematic diagram of a configuration of a bladder in a choke of an uphole Christmas tree according to the present invention in an inflated state;
FIG. 10 is a schematic diagram of a deflated bladder in a restriction valve of a wellhead Christmas tree in accordance with the present invention.
The reference numbers are as follows:
1-valve body, 101-telescopic hole, 2-inflow port, 3-outflow port, 4-valve core, 41-sealing part, 42-guiding part, 421-rotating groove, 422-second through hole, 43-containing groove, 44-third through hole, 45-fourth through hole, 50-first spring, 60-limiting rod, 70-pressing cap, 5-guiding groove, 6-rotating wheel, 61-first through hole, 611-concave hole part, 62-gear tooth, 7-toggle gear, 71-toggle hole, 72-containing hole, 8-toggle rod, 81-toggle block, 82-air bag, 83-vent hole, 84-concave groove, 85-guiding hole, 86-push rod, 87-third spring, 88-operating handle, 89-fourth spring, 9-sealing cover, 100-diversion assembly, 10-guide sleeve, 11-guide cylinder, 111-spherical end part, 12-second spring, 13-positioning rod, 14-adjusting screw, 15-limiting screw, 17-hydraulic cavity, and 171-hydraulic pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
As shown in fig. 1 and 2, the wellhead Christmas tree throttling valve comprises a valve body 1 and a valve core 4, wherein the valve core 4 is positioned inside the valve body 1. The valve body 1 includes an inlet 2 and an outlet 3, and a fluid flows from the inlet 2 toward the outlet 3. This embodiment shows a case where the inflow port 2 and the outflow port 3 are symmetrically disposed at both ends of the valve body 1. The inflow port 2 and the outflow port 3 may be arranged at a right angle.
The valve core 4 and the valve body 1 can be connected in a vertical sliding way; the spool 4 has a first position (shown with reference to fig. 2) at the lower side and a second position (shown with reference to fig. 8) at the upper side. When the valve element 4 is in the first position, the second through-hole 422 is located in the flow path between the inlet 2 and the outlet 3, and the valve can be used as a throttle. When the valve core 4 is located at the second position, the second through hole 422 leaves the flow channel, the flow channel is closed by the valve core 4, and the valve can be used for cutting off the flow channel and plays a role in safety protection. In addition, when the valve core 4 is at the second position, impurities in the first through hole 61 at the top can be cleaned through the poke rod 8, and the throttle hole can be cleaned without disassembling the valve.
In order to realize the switching between the first position and the second position, a hydraulic chamber 17 for containing hydraulic oil is formed in the inner chamber of the valve body 1 located on the upper side of the spool 4; the first spring 50 is arranged at the lower side of the valve core 4, one end of the first spring 50 is propped against the valve core 4, and the other end of the first spring is propped against the bottom of the inner cavity of the valve body 1. The limiting rod 60 is arranged on the upper side of the valve core 4, the lower end of the limiting rod 60 is abutted against the valve core 4, and the upper end of the limiting rod 60 extends upwards to the outer side of the valve body 1.
A hydraulic pipeline 171 communicated with the hydraulic cavity 17 is arranged on the side wall of the valve body 1, hydraulic oil can be injected into the hydraulic cavity 17 through the hydraulic pipeline 171, and the valve core 4 is pushed by the hydraulic oil to compress the first spring 50, so that the valve core 4 is positioned at the first position. When the flow channel needs to be cut off, the hydraulic system releases the hydraulic oil in the hydraulic cavity 17, so that the hydraulic oil flows out from the hydraulic pipeline 171, the valve core 4 moves upwards under the action force of the first spring 50, and moves from the first position to the second position, and the valve core 4 can block the channel, thereby playing a role in safety protection.
Above-mentioned hydraulic system is prior art, and chinese utility model patent that the grant bulletin number is CN216922084U discloses a relief valve surges belongs to the valve field, specifically belongs to the oil gas exploitation and specifically belongs to the technical field of the relief valve that oil gas used under the oil gas exploitation under the marine environment especially. Comprising a valve portion and an actuator portion; it is characterized in that: in the driver part, a hydraulic oil cavity is formed between the upper part of an oil cylinder piston and an oil cylinder body, and a first pipe fitting for conveying hydraulic oil is connected to the oil cylinder body correspondingly communicated with the hydraulic oil cavity; the other end of the first pipe fitting is connected with a first interface of a direct-acting electromagnetic valve; a second interface of the direct-acting electromagnetic valve is connected with a second pipe fitting for conveying hydraulic oil; the input end of the valve body of the valve part is provided with a pressure sensor which is used for collecting the pressure of the produced oil gas entering the valve body; and the controller is used for receiving the pressure detection signal of the pressure sensor and controlling the on-off state of the direct-acting electromagnetic valve according to the pressure detection signal. The hydraulic safety valve can automatically realize well sealing according to the pressure of the produced oil/gas in real time, and has simple structure and low cost.
In addition, the chinese utility model patent with the granted publication number CN205445545U discloses a gas recovery well wellhead safety valve hydraulic control system, which comprises a main control unit, a low-pressure control unit and a high-pressure control unit. When the pressure in the gas source is sharply reduced and raised and a fire disaster occurs, the hydraulic control system of the wellhead safety valve of the gas production well can automatically and safely turn off the wellhead safety valve to ensure the gas production safety; the manual unloading of the inlet safety valve is realized, and the safety of the system is improved; the remote unloading of the inlet safety valve is realized, and the convenience of system operation is improved.
As shown in fig. 6 and 7, a receiving groove 43 is provided in the valve body 4, and a rotary wheel 6 and a toggle gear 7 are provided in the receiving groove 43. The rotating wheel 6 is rotatably connected with the valve core 4, and a plurality of first through holes 61 with sequentially increased inner diameters are formed in the rotating wheel 6. The first through hole 61 can communicate the inflow port 2 and the outflow port 3.
Preferably, the rotating wheel 6 may be made of cemented carbide. The plurality of first through holes 61 are uniformly arranged in the circumferential direction and have sequentially increasing inner diameters. The first through hole 61 having a suitable diameter can be rotated into the flow passage by adjusting the position of the rotary wheel 6, so that the size of the orifice is adjusted without detaching the valve body 1, thereby improving the convenience of use.
In order to facilitate the adjustment of the position of the turning wheel 6, the outer profile of the turning wheel 6 is provided with gear teeth 62; the toggle gear 7 is also arranged in the containing groove 43, the toggle gear 7 is positioned at the upper side of the rotating wheel 6, and the toggle gear 7 is meshed with the rotating wheel 6. The turning wheel 6 can be driven to rotate by the toggle gear 7.
As shown in fig. 2, the toggle gear 7 is rotatably connected in the accommodating groove 43 through a rotating shaft. The rotating shaft can be integrally formed with the toggle gear 7 or can be formed by assembling.
As shown in fig. 3, the valve body 1 is provided with a telescopic hole 101 penetrating through a side wall of the valve body 1. The poke rod 8 is arranged in the telescopic hole 101. The tap lever 8 is capable of rotating and axially sliding along the telescopic bore 101. The middle part of toggle gear 7 is equipped with group hole 71, and poker rod 8 can be connected with group hole 71, can rotate toggle gear 7 through poker rod 8. The section of the dial hole 71 is preferably polygonal column, for example, square hole or hexagonal hole.
The section shape of a section of the poking block 81 close to the front end of the poking rod 8 is matched with the section shape of the poking hole 71. The front end of the tap lever 8 is an end of the tap lever 8 facing the inside of the valve body 1, and the rear end of the tap lever 8 is a section facing the outside of the valve body 1. The section of the poke rod 8 close to the rear end is circular in shape, so that the poke rod 8 and the valve body 1 are sealed conveniently. An operating handle 88 is arranged at the rear end of the poke rod 8, and the poke gear 7 can be rotated by the operating handle 88 so as to drive the rotating wheel 6 to rotate. The operating handle 88 may also be shaped like a bolt head to facilitate the application of greater operating force by a wrench. In addition, a shape for limiting the outward movement of the tap lever 8 can be provided on the valve body 1, for example, a pressing sleeve is screwed on the valve body 1, a limiting structure with a larger diameter is provided on the outer circle of the tap lever 8, and the tap lever 8 is limited to be pulled out from the telescopic hole 101 by the pressing sleeve.
The poke rod 8 is sleeved with a fourth spring 89, one end of the fourth spring 89 abuts against the valve body 1, and the other end of the fourth spring 89 abuts against the handle. Pressing the handle can compress the fourth spring 89. After losing the pressing force, the fourth spring 89 can push the tap lever 8 to retract.
As shown in fig. 2 and 4, the guide assembly 100 is positioned between the rotating wheel 6 and the inflow port 2, and the first through hole 61 communicates with the inflow port 2 through the guide assembly 100. The valve core 4 is provided with a second through hole 422 which penetrates through the valve core 4 in the horizontal direction, and the flow guide assembly 100 is arranged in the second through hole 422. The guide assembly 100 comprises a guide cylinder 11 and a second spring 12, one end of the guide cylinder 11 can be communicated with the first through hole 61, and the other end is communicated with the inflow port 2; one end of the second spring 12 abuts against the guide cylinder 11, and the other end abuts against the valve core 4, and the second spring 12 is used for providing an elastic force for pressing the guide cylinder 11 to the first through hole 61. One side of the guide cylinder 11 facing the first through hole 61 is provided with a spherical end part 111; the first through hole 61 has a recessed hole portion 611 on a side facing the guide cylinder 11, and the spherical end 111 can abut against the recessed hole portion 611. When the rotating wheel 6 rotates, the spherical end 111 comes out of the recessed hole portion 611 of one first through hole 61, and when the rotating wheel rotates into the recessed hole portion 611 of the next first through hole 61, the second spring 12 pushes the guide cylinder 11 to move forward, and the spherical end 111 is clamped into the recessed hole portion 611, so that accurate positioning can be achieved.
In addition, the diameters of the recessed hole parts 611 of the plurality of first through holes 61 may be the same, thereby facilitating the fitting of the spherical end parts 111 with the recessed hole parts 611. The diameters of the first through holes 61 are different, and the first through holes are used for realizing switching of orifices with different inner diameters.
Preferably, the number of the first through holes 61 is even and uniformly arranged around the central axis of the rotating wheel 6. When one of the first through holes 61 is positioned at the lowermost end, another one of the first through holes 61 must be positioned at the uppermost end.
In the present embodiment, as shown in fig. 8, when the spool 4 is located at the second position, the first through hole 61 located at the upper side is aligned with the telescopic hole 101; the poke rod 8 can slide along the telescopic hole 101, and the front end of the poke rod 8 can penetrate into the first through hole 61 to play a role in cleaning the first through hole 61.
As shown in fig. 5, 9 and 10, in order to further enhance the cleaning effect, an air bag 82 is provided at the front end of the tap lever 8, a vent hole 83 is provided inside the tap lever 8, and the vent hole 83 communicates with the air bag 82; the gas can be introduced into the airbag 82 or extracted from the airbag 82 through the vent hole 83. As shown in fig. 9, when gas is introduced into the air bag 82, the air bag 82 is inflated to be able to adhere to the inner wall of the first through hole 61, thereby improving the cleaning effect. As shown in fig. 10, the front end of the vent hole 83 is provided with a recessed groove 84, and when gas is pumped out of the airbag 82, at least a part of the airbag 82 can be retracted into the recessed groove 84 so as to facilitate the penetration of the dial 81 into the dial hole 71 or the first through hole 61.
In order to facilitate the introduction of air into the air bag 82 or the extraction of air from the air bag 82, a guide hole 85 is formed in the tap lever 8, a push rod 86 is arranged in the guide hole 85, a piston is arranged at the front end of the push rod 86, a third spring 87 is arranged at the front end of the push rod 86, and the guide hole 85 is communicated with the vent hole 83. Pushing the push rod 86, the gas in the guide hole 85 is pressed into the air bag 82; the push rod 86 is withdrawn and the gas within the bladder 82 is evacuated.
In addition, the bottom of the dial hole 71 is provided with an accommodation hole 72. The receiving hole 72 can be used to receive an air bag 82 when the dial 81 is mated with the dial hole 71.
As shown in fig. 2, a pressing cap 70 is provided on the top of the valve body 1, and a limit screw 15 is screwed to the pressing cap 70. When the safety protection function is not needed, the limiting screw 15 can be rotated downwards to limit the position of the limiting rod 60 and the valve core 4. When safety protection is required, the limit screw 15 can be rotated up or down as shown in fig. 8.
Example 2
As shown in fig. 1 to 7, a wellhead christmas tree throttle valve comprises a valve body 1, an inflow port 2 and an outflow port 3 respectively arranged at two ends of the valve body 1, a valve core 4 arranged inside the valve body 1 in a sliding manner, a first spring 50 arranged at the bottom of the valve core 4 in a cushioning manner, a limiting rod 60 arranged at the upper end of the valve core 4 in a propping manner, and a hydraulic cavity 17 for driving the limiting rod 60 to move downwards.
A rotating wheel 6 is arranged in the valve core 4, and first through holes 61 are uniformly distributed on the rotating wheel 6; the middle part of the valve core 4 is provided with a second through hole 422, and the outer side of the second through hole 422 positioned at the inflow port 2 side is provided with the flow guide assembly 100. The periphery of the limiting rod 60 is provided with a sealing ring. The flanges arranged on the outer sides of the inflow port 2 and the outflow port 3 are connected with a pipeline, the hydraulic cavity 17 is connected with an external hydraulic system, hydraulic oil is introduced into the hydraulic cavity 17 through the hydraulic system, the valve core 4 is pushed by the hydraulic oil to move downwards, and the position of the second through hole 422 is opposite to the middle holes of the inflow port 2 and the outflow port 3. At this moment, the third through hole 44 is just opposite to the poke rod 8, when the throttling aperture needs to be adjusted, the hand-held operation handle 88 drives the poke rod 8 to push towards the third through hole 44, the poke block 81 is inserted into the poke hole 71, further, the poke gear 7 can be driven to rotate through the rotary operation handle 88, the poke gear 7 drives the rotating wheel 6 to rotate, according to different flow requirements of a wellhead Christmas tree throttling valve, the first through hole 61 with the proper inner diameter is rotated between the inflow port 2 and the outflow port 3, and the positioning of the rotating wheel 6 is realized by utilizing the spherical end part 111 of the guide cylinder 11, at this moment, the first through hole 61 positioned at the top of the poke wheel 6 is positioned in the guide groove 5, and a sealing strip is arranged around the upper port of the guide groove 5. The poke rod 8 is located at the outer side in the normal working state of the valve, when the pressure of the fluid in the inflow port 2 is suddenly increased, in order to protect the safety of the pipeline, the hydraulic system controls to discharge the hydraulic oil in the hydraulic cavity 17 from the hydraulic pipeline 171, which is a conventional structure applied to the existing safety valve, and the specific structure is not repeated. The valve body 4 is pushed up by the first spring 50, and the passage between the inlet port 2 and the outlet port 3 is closed by the seal 41, thereby achieving the purpose of safety protection. After the valve core 4 is lifted to a certain height, the upper end of the valve core is limited by the sealing cover 9, at the moment, the position of the fourth through hole 45 is right opposite to the direction of the poke rod 8, and the first through hole 61 positioned at the uppermost part of the poke wheel 6 is right opposite to the fourth through hole 45, at the moment, the poke rod 8 is pushed towards the direction of the fourth through hole 45 and drives the air bag 82 to be pushed into the first through hole 61, and then, attachments adhered to the inner wall of the first through hole 61 can be cleaned through the back-and-forth pulling of the air bag 82, so that the throttling effect is prevented from being influenced by the blockage or the reduction of the inner diameter of the first through hole 61. Through rotating the toggle wheel 6 by different angles, the first through holes 61 at different positions can be cleaned by the air bag 82, and therefore, the throttling control can be accurately realized by each first through hole 61, and the valve is cleaned sufficiently under the condition that the valve is not detached.
In this embodiment, the valve core 4 includes a sealing portion 41 and a guiding portion 42, the sealing portion 41 is integrally formed at the lower end of the guiding portion 42, and the sealing portion is slidably disposed in the guiding groove 5 formed at the middle of the valve core 4, a rotating groove 421 is formed at the middle of the guiding portion 42, an opening is formed at the upper end of the rotating groove 421, a rotating wheel 6 is disposed in the rotating groove 421, first through holes 61 with different diameters are uniformly formed at the periphery of the rotating wheel 6, gear teeth 62 are formed at the periphery of the rotating wheel 6, the rotating groove 421 is located at the lower half portion of the accommodating groove 43, a toggle gear 7 meshed with the rotating wheel 6 is disposed in the accommodating groove 43, the toggle gear 7 is driven by a toggle rod 8, the toggle gear 7 is driven to rotate by the toggle rod 8, the rotating wheel 6 is driven to rotate by the toggle gear 7, the positions of the first through holes 61 with different inner diameters at the periphery of the rotating wheel 6 can be adjusted, and the throttle diameter of the valve can be adjusted.
In this embodiment, the valve body 1 includes a sealing cover 9 disposed on the upper portion thereof, the poke rod 8 is transversely disposed on the side portion of the sealing cover 9, the limiting rod 60 is vertically disposed in the middle portion of the sealing cover 9, and the press cap 70 is sealingly disposed on the upper side of the sealing cover 9; two side walls of the rotating groove 421 are provided with second through holes 422; the diversion assembly 100 comprises a guide sleeve 10, a guide cylinder 11 is arranged in the guide sleeve 10, one end of the guide cylinder 11 is provided with a spherical end 111, and the spherical end 111 of the guide cylinder 11 is pressed against the outer side of the orifice of the first through hole 61 through a second spring 12 arranged in the guide sleeve 10, at this time, the first through hole 61, the second through hole 422 and the guide cylinder 11 are communicated. When the first through hole 61 is rotated to the position of the guide cylinder 11, the spherical end 111 of the guide cylinder 11 will be clamped outside the hole of the first through hole 61 under the pushing of the second spring 12, so that the positioning of the first through hole 61 can be realized, and it is ensured that the medium enters the first through hole 61 from the inflow port 2 directly through the guide cylinder 11, and further enters the outflow port 3 through the first through hole 61, and is conveyed outwards through the outflow port 3.
In this embodiment, the lower end surface of the sealing portion 41 is provided with a positioning rod 13; the lower end face of the valve body 1 is provided with a threaded hole, an adjusting screw 14 is arranged in the threaded hole, and the upper end part of the adjusting screw 14 abuts against the lower end part of the positioning rod 13. In order to ensure that the circumferential position of the first through hole 61 located at the lowermost side of the turning wheel 6 is accurately controlled, the adjusting screw 14 is rotated to abut against the bottom of the positioning rod 13 through the adjusting screw 14, and further the height positions of the first through hole 61 and the second through hole 422 are controlled through the positioning rod 13.
In this embodiment, the toggle gear 7 is rotatably connected to two side walls of the accommodating slot 43 through a rotating shaft, wherein a side wall facing the direction of the toggle rod 8 is provided with a third through hole 44, a toggle hole 71 is provided at a middle portion of the rotating shaft close to the third through hole 44, and an accommodating hole 72 is provided at an inner end of the toggle hole 71 in a communication manner; one end of the poke rod 8 facing the poke hole 71 is provided with a poke block 81, and the outer end of the poke block 81 is provided with an air bag 82. A vent hole 83 is formed in the middle of the poke rod 8, one end of the vent hole 83 is communicated with the air bag 82, the other end of the vent hole 83 is communicated with a guide hole 85 formed in the middle of the poke rod 8, a push rod 86 is arranged in the guide hole 85 in a sliding manner, a third spring 87 is arranged at the inner end of the push rod 86, and a concave groove 84 is formed in the connection position of the vent hole 83 and the air bag 82; a fourth through hole 45 is provided below the third through hole 44. The valve core 4 moves to the second position, the sealing part 41 seals the channel between the inflow port 2 and the outflow port 3, at this time, the fourth through hole 45 is lifted to the position aligned with the poke rod 8, the poke rod 8 is pushed towards the fourth through hole 45 until the air bag 82 is pushed into the first through hole 61, the air bag 82 is in the concave groove 84 in the initial state, when the air bag 82 is in the first through hole 61, at this time, the push rod 86 is pushed, the rubber piston can be arranged at the end part of the push rod 86, air is pushed into the air bag 82 from the vent hole 83 through the rubber piston, the air bag 82 expands to fill the inner wall of the first through hole 61, at this time, the position of the push rod 86 is maintained, the poke rod 8 is pushed and pulled at the same time, and furthermore, impurities such as silt and the like attached to the inner wall of the first through hole 61 can be cleaned by the outer wall of the air bag 82. After cleaning, the push rod 86 is returned by the third spring 87, and the air bag 82 is sucked into the recess 84 for storage.
In this embodiment, the protruding points with high hardness may be fixed to the outer wall surface of the air bag 82, and the protruding points may be made of, for example, teflon or metal, so that the wear resistance of the air bag 82 may be improved.
Preferably, the outer end of the poke rod 8 is provided with an operating handle 88, and the periphery of the poke rod 8 is sleeved with a fourth spring 89. The fourth spring 89 is used for restoring, so that the poke rod 8 is ensured to avoid the interference between the guide part 42 and the sealing part 41 to move up and down in the initial state.
The working principle of the throttle valve of the embodiment is as follows: the flange plates arranged on the outer sides of the inflow port 2 and the outflow port 3 are connected with a pipeline, the hydraulic cavity 17 is connected with an external hydraulic system, hydraulic oil is introduced into the hydraulic cavity 17 through the hydraulic system, the valve element 4 is pushed to move downwards, the position of the second through hole 422 is just opposite to the middle holes of the inflow port 2 and the outflow port 3, at the moment, the telescopic hole 101 is just opposite to the third through hole 44, the poke rod 8 is driven by the handheld operating handle 88 to push towards the direction of the third through hole 44, the poke block 81 is inserted into the poke hole 71, the poke gear 7 can be driven to rotate through the rotating operating handle 88, the poke gear 7 drives the rotating wheel 6 to rotate, according to different requirements for medium flow passing through a wellhead oil extraction tree throttling valve, the first through hole 61 with a proper inner diameter is rotated between the inflow port 2 and the outflow port 3, positioning of the position of the rotating wheel 6 is realized by utilizing the spherical end part 111 of the guide cylinder 11, and at the moment, the uppermost first through hole 61 of the poke wheel 6 is positioned in the guide groove 5.
When the pressure of the fluid in the inlet 2 is suddenly increased, in order to protect the safety of the pipeline, the tap lever 8 is located at the outer side in the normal working state of the valve, the hydraulic system discharges the hydraulic oil in the hydraulic chamber 17 through the hydraulic pipeline, the valve core 4 is jacked up through the first spring 50, and then the channel between the inlet 2 and the outlet 3 is closed through the sealing part 41. When the valve core 4 is lifted to a certain height, the upper end of the valve core is limited by the sealing cover 9. Whereby the spool 4 moves from the first position to the second position. At this moment, the position of the fourth through hole 45 is just opposite to the direction of the poke rod 8, and the first through hole 61 positioned at the uppermost part of the rotating wheel 6 is just opposite to the fourth through hole 45, at this moment, the poke rod 8 is pushed towards the direction of the fourth through hole 45, and the air bag 82 is driven to be pushed into the first through hole 61, so that the attachments such as silt adhered to the inner wall of the first through hole 61 can be cleaned by pulling the air bag 82 back and forth, and the influence on the throttling effect caused by the fact that the inner diameter of the first through hole 61 is shortened for a long time is avoided. By rotating the rotating wheel 6 by different angles, the first through holes 61 at different positions can be cleaned by the air bags 82. The above cleaning work is performed without disassembling the valve.
In addition, when the amount of the impurities accumulated in the bottom of the sealing cover 9 is large, the accumulated impurities can be cleaned by removing the sealing cover 9 with a removal screw, but the frequency of the above cleaning operation is greatly reduced.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (8)
1. A wellhead Christmas tree choke valve, comprising:
a valve body (1) including an inlet (2) and an outlet (3), wherein a fluid flows from the inlet (2) to the outlet (3);
the valve core (4) is arranged in the valve body (1) and can be connected with the valve body (1) in a vertical sliding manner; the inner cavity of the valve body (1) positioned on the upper side of the valve core (4) forms a hydraulic cavity (17) for containing hydraulic oil; an accommodating groove (43) is formed in the valve core (4);
the first spring (50) is arranged on the lower side of the valve core (4), one end of the first spring (50) is abutted against the valve core (4), and the other end of the first spring (50) is abutted against the bottom of the inner cavity of the valve body (1);
the limiting rod (60) is arranged on the upper side of the valve core (4), the lower end of the limiting rod (60) is abutted against the valve core (4), and the upper end of the limiting rod (60) extends upwards to the outer side of the valve body (1);
the rotating wheel (6) is arranged in the accommodating groove (43), the rotating wheel (6) is rotatably connected with the valve core (4), and a plurality of first through holes (61) with sequentially increased inner diameters are formed in the rotating wheel (6); the first through hole (61) is capable of communicating the inflow port (2) and the outflow port (3); gear teeth (62) are arranged on the outer contour of the rotating wheel (6);
the toggle gear (7) is arranged in the accommodating groove (43), the toggle gear (7) is positioned on the upper side of the rotating wheel (6), and the toggle gear (7) is meshed with the rotating wheel (6); and the flow guide assembly (100) is positioned between the rotating wheel (6) and the inflow port (2), and the first through hole (61) is communicated with the inflow port (2) through the flow guide assembly (100).
2. A wellhead Christmas tree throttling valve according to claim 1, wherein a second through hole (422) penetrating through the valve core (4) in the horizontal direction is arranged on the valve core (4), and the flow guide assembly (100) is arranged in the second through hole (422);
the flow guide assembly (100) comprises a guide cylinder (11) and a second spring (12), one end of the guide cylinder (11) can be communicated with the first through hole (61), and the other end of the guide cylinder is communicated with the inflow port (2);
one end of the second spring (12) is abutted against the guide cylinder (11), the other end of the second spring is abutted against the valve core (4), and the second spring (12) is used for providing elastic force for pressing the guide cylinder (11) to the first through hole (61).
3. The wellhead Christmas tree choke according to claim 2,
one side of the guide cylinder (11) facing the first through hole (61) is provided with a spherical end part (111); a concave part (611) is arranged on one side, facing the guide cylinder (11), of the first through hole (61), and the spherical end part (111) can abut against the concave part (611).
4. The wellhead Christmas tree choke according to claim 3,
the valve core (4) is provided with a first position at the lower side and a second position at the upper side, and when the valve core (4) is positioned at the first position, the second through hole (422) is positioned in a flow passage between the inflow port (2) and the outflow port (3); when the valve core (4) is located at the second position, the second through hole (422) leaves the flow passage, and the flow passage is closed by the valve core (4).
5. The wellhead Christmas tree choke according to claim 4,
the toggle gear (7) is rotatably connected in the accommodating groove (43) through a rotating shaft; a telescopic hole (101) penetrating through the side wall of the valve body (1) is formed in the valve body (1), and a poke rod (8) is arranged in the telescopic hole (101); the middle part of toggle gear (7) is equipped with dials hole (71), poker rod (8) can with dial hole (71) and be connected, through poker rod (8) can rotate toggle gear (7).
6. The wellhead Christmas tree choke valve of claim 5,
when the valve core (4) is located at the second position, the first through hole (61) located at the upper side is aligned with the telescopic hole (101);
the poke rod (8) can slide along the telescopic hole (101), and the front end of the poke rod (8) can penetrate into the first through hole (61).
7. The wellhead Christmas tree choke of claim 6,
an air bag (82) is arranged at the front end of the poke rod (8), a vent hole (83) is formed in the poke rod (8), and the vent hole (83) is communicated with the air bag (82); a concave groove (84) is formed in the front end of the vent hole (83);
a guide hole (85) is formed in the poke rod (8), a push rod (86) is arranged in the guide hole (85), a third spring (87) is arranged at the front end of the push rod (86), and the guide hole (85) is communicated with the vent hole (83);
the hole bottom of the poking hole (71) is provided with an accommodating hole (72).
8. The wellhead Christmas tree choke of claim 7,
the rear end of the poke rod (8) is provided with an operating handle (88), and the poke rod (8) is sleeved with a fourth spring (89).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211394844.XA CN115573683B (en) | 2022-11-09 | 2022-11-09 | Wellhead Christmas tree throttle valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211394844.XA CN115573683B (en) | 2022-11-09 | 2022-11-09 | Wellhead Christmas tree throttle valve |
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| CN115573683A true CN115573683A (en) | 2023-01-06 |
| CN115573683B CN115573683B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211394844.XA Active CN115573683B (en) | 2022-11-09 | 2022-11-09 | Wellhead Christmas tree throttle valve |
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Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431641A (en) * | 1973-01-18 | 1976-04-14 | Chivari I | Valve mechanism |
| US4431028A (en) * | 1981-04-06 | 1984-02-14 | Smith International, Inc. | Multiple orifice valve with low volume flow control |
| US5308040A (en) * | 1991-11-28 | 1994-05-03 | Torres Nestor Ruben | Fluid flow regulating valve |
| GB0815517D0 (en) * | 2008-08-27 | 2008-10-01 | Master Flo Valve Inc | Cage valve with erosion control |
| CN201730599U (en) * | 2010-07-04 | 2011-02-02 | 胜利油田胜机石油装备有限公司 | Quantitative adjustable straight way throttle valve for oil extraction and gas production |
| CN201874520U (en) * | 2010-11-12 | 2011-06-22 | 盐城市阳标石油机械有限公司 | Cage type throttling valve |
| CN203374243U (en) * | 2013-07-29 | 2014-01-01 | 苏州道森钻采设备股份有限公司 | Outer cage throttle valve |
| CN203906847U (en) * | 2014-03-31 | 2014-10-29 | 南京伟业机械有限公司 | Adjustable throttle valve for gas recovery wellhead |
| CN204729661U (en) * | 2015-05-20 | 2015-10-28 | 天津斯维克阀业有限公司 | A kind of heating flow control valve |
| CN205401779U (en) * | 2016-03-03 | 2016-07-27 | 中国石油大学(华东) | Production tree prevents stifled choke valve |
| CN206036261U (en) * | 2016-08-23 | 2017-03-22 | 龙圆环保科技（上海）有限公司 | Controllable valve of flow |
| US20170356552A1 (en) * | 2016-06-10 | 2017-12-14 | Ecotec Solutions, Inc. | Multi-orifice plate flow valve |
| CN207033404U (en) * | 2017-06-09 | 2018-02-23 | 中国石油化工股份有限公司 | A kind of VOLTAG CHOPPER VEGULATOR valve |
| CN109826990A (en) * | 2017-11-23 | 2019-05-31 | 中国石油化工股份有限公司 | A kind of flow controller |
| CN210397732U (en) * | 2019-08-02 | 2020-04-24 | 马瑞利（中国）有限公司 | Throttle valve body |
| CN111895118A (en) * | 2020-08-20 | 2020-11-06 | 苏铂威(江苏)阀门有限公司 | Novel cut-off straight-through type cage sleeve throttle valve |
| KR20210011850A (en) * | 2019-07-23 | 2021-02-02 | 동아대학교 산학협력단 | GateValve for Flow Control |
| JP2021050769A (en) * | 2019-09-25 | 2021-04-01 | 三浦工業株式会社 | Flow rate adjustment valve |
| CN213017807U (en) * | 2020-08-11 | 2021-04-20 | 山东四通石油技术开发有限公司 | Adjustable throttle valve |
| CN213269846U (en) * | 2020-08-14 | 2021-05-25 | 中国石油化工股份有限公司 | Regulator for oil and gas tree production |
| CN213451787U (en) * | 2020-11-23 | 2021-06-15 | 邛崃市欣凡尔阀业有限公司 | Rotary disc type flow control valve |
| CN113586006A (en) * | 2020-04-30 | 2021-11-02 | 中国石油天然气集团有限公司 | Valve core assembly for throttle valve and throttle valve |
| CN114645692A (en) * | 2022-05-23 | 2022-06-21 | 德州联合石油科技股份有限公司 | Wellhead Christmas tree throttle valve core and throttle valve |
| CN216922084U (en) * | 2022-06-02 | 2022-07-08 | 德州联合石油科技股份有限公司 | Hydraulic safety valve |
-
2022
- 2022-11-09 CN CN202211394844.XA patent/CN115573683B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431641A (en) * | 1973-01-18 | 1976-04-14 | Chivari I | Valve mechanism |
| US4431028A (en) * | 1981-04-06 | 1984-02-14 | Smith International, Inc. | Multiple orifice valve with low volume flow control |
| US5308040A (en) * | 1991-11-28 | 1994-05-03 | Torres Nestor Ruben | Fluid flow regulating valve |
| GB0815517D0 (en) * | 2008-08-27 | 2008-10-01 | Master Flo Valve Inc | Cage valve with erosion control |
| CN201730599U (en) * | 2010-07-04 | 2011-02-02 | 胜利油田胜机石油装备有限公司 | Quantitative adjustable straight way throttle valve for oil extraction and gas production |
| CN201874520U (en) * | 2010-11-12 | 2011-06-22 | 盐城市阳标石油机械有限公司 | Cage type throttling valve |
| CN203374243U (en) * | 2013-07-29 | 2014-01-01 | 苏州道森钻采设备股份有限公司 | Outer cage throttle valve |
| CN203906847U (en) * | 2014-03-31 | 2014-10-29 | 南京伟业机械有限公司 | Adjustable throttle valve for gas recovery wellhead |
| CN204729661U (en) * | 2015-05-20 | 2015-10-28 | 天津斯维克阀业有限公司 | A kind of heating flow control valve |
| CN205401779U (en) * | 2016-03-03 | 2016-07-27 | 中国石油大学(华东) | Production tree prevents stifled choke valve |
| US20170356552A1 (en) * | 2016-06-10 | 2017-12-14 | Ecotec Solutions, Inc. | Multi-orifice plate flow valve |
| CN206036261U (en) * | 2016-08-23 | 2017-03-22 | 龙圆环保科技（上海）有限公司 | Controllable valve of flow |
| CN207033404U (en) * | 2017-06-09 | 2018-02-23 | 中国石油化工股份有限公司 | A kind of VOLTAG CHOPPER VEGULATOR valve |
| CN109826990A (en) * | 2017-11-23 | 2019-05-31 | 中国石油化工股份有限公司 | A kind of flow controller |
| CN109826990B (en) * | 2017-11-23 | 2020-12-15 | 中国石油化工股份有限公司 | Throttling device |
| KR20210011850A (en) * | 2019-07-23 | 2021-02-02 | 동아대학교 산학협력단 | GateValve for Flow Control |
| CN210397732U (en) * | 2019-08-02 | 2020-04-24 | 马瑞利（中国）有限公司 | Throttle valve body |
| JP2021050769A (en) * | 2019-09-25 | 2021-04-01 | 三浦工業株式会社 | Flow rate adjustment valve |
| CN113586006A (en) * | 2020-04-30 | 2021-11-02 | 中国石油天然气集团有限公司 | Valve core assembly for throttle valve and throttle valve |
| CN213017807U (en) * | 2020-08-11 | 2021-04-20 | 山东四通石油技术开发有限公司 | Adjustable throttle valve |
| CN213269846U (en) * | 2020-08-14 | 2021-05-25 | 中国石油化工股份有限公司 | Regulator for oil and gas tree production |
| CN111895118A (en) * | 2020-08-20 | 2020-11-06 | 苏铂威(江苏)阀门有限公司 | Novel cut-off straight-through type cage sleeve throttle valve |
| CN213451787U (en) * | 2020-11-23 | 2021-06-15 | 邛崃市欣凡尔阀业有限公司 | Rotary disc type flow control valve |
| CN114645692A (en) * | 2022-05-23 | 2022-06-21 | 德州联合石油科技股份有限公司 | Wellhead Christmas tree throttle valve core and throttle valve |
| CN216922084U (en) * | 2022-06-02 | 2022-07-08 | 德州联合石油科技股份有限公司 | Hydraulic safety valve |
Non-Patent Citations (1)
| Title |
|---|
| 冯素敬;张建权;王裴;金祖国;李怡东;: "采气用笼套式节流阀阀芯尺寸和节流开度研究" * |
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| CN115573683B (en) | 2023-03-21 |
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