CN113339539A - Labor-saving durable ultrahigh-pressure manual wedge-type throttle valve - Google Patents
Labor-saving durable ultrahigh-pressure manual wedge-type throttle valve Download PDFInfo
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- CN113339539A CN113339539A CN202110639980.XA CN202110639980A CN113339539A CN 113339539 A CN113339539 A CN 113339539A CN 202110639980 A CN202110639980 A CN 202110639980A CN 113339539 A CN113339539 A CN 113339539A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/20—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/10—Means to prevent accidental or unauthorised actuation with locking caps or locking bars
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0058—Optical means, e.g. light transmission, observation ports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/06—Spindle sealings with stuffing-box ; Sealing rings with at least one ring attached to both spindle and housing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Valve Housings (AREA)
- Sliding Valves (AREA)
Abstract
A labor-saving and durable ultrahigh-pressure manual wedge-type throttle valve comprises a valve body
The type four-way structure: in the valve cavity hole above itThe valve cover component, the valve rod valve core component, the bracket component, the driving component and the display component are arranged outside the valve body, wherein the driving component is a general manual bevel gear driver and drives the valve rod valve core component to move up and down by using a valve rod nut at the center of a large bevel gear; the display component is arranged at the top end of the valve rod and the upper end of the driving component and is used for displaying the equivalent aperture of the opening and closing of the valve; a valve seat component is arranged in a channel hole below the valve body, the valve seat is made of hard alloy materials, the upper part of the valve seat is thick, the lower part of the valve seat is thin, and the length of the valve seat penetrates through the whole channel hole below the valve body; the left side of the device is provided with an inlet channel hole and an external connecting flange, the right side of the device is provided with a newly designed backflow hole, and a blind flange embedded with a hard alloy module is arranged at an orifice. In addition, the lower end surface of the valve cover is upwards drilled with a T-shaped pressure balance hole, and the overall improvement of the used sealing element is improved, so that the valve cover has excellent ultrahigh pressure resistance.
Description
Technical Field
The invention relates to a wedge-type throttle valve used in petroleum machinery and other industrial industries.
Background
The wedge-type throttle valve is popular with more and more customers due to the characteristics of smooth flow, small vibration, small noise, accurate metering, long service life and the like. Particularly, the drilling and production equipment with higher and higher working pressure is used more and more on the drilling and production equipment with deeper and deeper oil and gas wells. However, when the existing wedge-type throttle valve product works under the ultrahigh pressure of more than 100MPa, some obvious problems occur: firstly, the valve has large opening and closing resistance and is difficult to operate by manpower, and if the valve is driven by hydraulic pressure, the cost is high; secondly, under the impact of the ultrahigh-pressure sand-containing medium, one surface of the existing valve body relative to the inlet can be rapidly abraded and scrapped, so that the service life of the valve body is shortened; thirdly, the existing commonly used short valve seat is difficult to protect a channel hole below the valve seat under the impact of ultrahigh pressure sand-containing media, and the valve seat is difficult to replace after being worn. Therefore, it is necessary to improve the service performance and the service life of the wedge-type throttle valve under the ultrahigh pressure working condition.
Disclosure of Invention
The invention aims to solve the problems and special working conditions, and is innovatively designed on the basis of the prior product technology so as to improve the performance and the service life of a wedge-type throttle valve product for dealing with ultrahigh-pressure sand-containing media.
The invention consists of a valve body part, a valve cover part, a valve rod valve core part, a bracket part and a driverThe movable part, the display part, the valve seat part and the matched sealing part and connecting part are combined, and the difference is that: the valve body in the valve body component is
The type four-way structure: a valve cavity hole above the valve body is internally and externally provided with a valve cover component, a valve rod valve core component, a support component, a driving component and a display component, wherein the driving component is a general manual bevel gear driver and drives the valve rod valve core component to move up and down by using a valve rod nut at the center of a large bevel gear; the display component is arranged at the top end of the valve rod valve core component and the upper end of the manual bevel gear driver shell and displays the equivalent aperture of the opening and closing of the valve by using the relative position of a horizontal position line of the outer surface of the indicating rod and the upper end plane of the through hole end cover; a channel hole and a neck flange which is externally connected are arranged below the valve body, a valve seat part is arranged in the channel hole, a valve seat in the valve seat part is made of hard alloy materials, the upper part of the valve seat is thick, the lower part of the valve seat is thin, and the length of the valve seat penetrates through the whole channel hole below the valve body; the left side of the device is provided with a channel hole of a medium inlet which is externally connected through a neck flange; the right side of the device is provided with a newly designed backflow hole, and a blind flange embedded with a hard alloy module is arranged at an orifice.
In addition, the lower end face of the valve cover is provided with a T-shaped pressure balance hole, the lower end of the valve cover is sealed by a corrosion-resistant FS-shaped sealing ring, and the joints of the valve body, the valve cover, the blind flange and the external flange are sealed by metal sealing gasket rings.
Because the invention adopts the manual bevel gear driver, the lever action of the transmission ratio is utilized, the operation resistance can be greatly reduced; in addition, the pressure balance hole at the lower end of the valve cover can reduce the pressure difference between the upper part and the lower part of the valve core and the resistance of compressed air, so that the ultrahigh-pressure throttling valve can be easily operated. A backflow hole penetrating through the valve body is formed in the opposite side of the inlet channel of the valve body, a blind flange embedded with a hard alloy module is installed on the valve body outside the backflow hole, and replaceable wear-resistant parts are used for bearing erosion of ultrahigh-pressure sand-containing media to prevent the valve body from being damaged in advance. The valve seat in the valve seat component is made of hard alloy materials, the upper part of the valve seat is thick, the lower part of the valve seat is thin, the length of the valve seat penetrates through the whole channel hole below the valve body, and the valve seat is convenient to replace and maintain while the wear resistance of the valve seat is improved. The lower end of the valve cover is sealed by FS-shaped sealing rings, and the joints of the valve body, the valve cover, the blind flange and the external flange are sealed by metal sealing gaskets; the integral pressure resistance and corrosion resistance of the throttle valve are improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention in full section;
FIG. 2 is a schematic cross-sectional view A-A of the valve body, bonnet and valve stem junction of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged partial cross-sectional view of the valve cover component of the present invention showing the contact between the seal assembly and the valve stem;
FIG. 4 is an enlarged, fragmentary cross-sectional view of the valve cover assembly of FIG. 1 showing the inner seal B;
FIG. 5 is an enlarged view of the bottom surface C of the valve element of FIG. 1 according to the present invention;
FIG. 6 is an enlarged view of the invention shown in FIG. 1, showing the content of the mark on the indication rod at D.
The names of the components indicated by the reference numerals in the drawings are as follows:
1. the valve comprises a valve body, a valve core, a valve rod, a valve cover, a support, a manual bevel gear driver valve rod, a valve rod, a.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
in fig. 1, the invention uses a valve body component as a carrier, and uses a matched sealing element and a connecting piece to connect a valve cover component, a valve rod and a valve core component, a bracket component, a driving component, a display component and a valve seat component to form a functional unit with flow regulation under the working conditions of ultrahigh pressure and sand-containing medium.
The valve body component of the invention consists of a valve body 1, a hard alloy module 21, a blind flange 22, a sealing gasket ring 24 and a stud nut 25. The valve body 1 is
The four-way structural part is characterized in that four channel holes intersected in a cross shape are as follows: a cylindrical valve cavity hole is arranged above the valve body and used for installing components such as a valve cover, a valve rod, a valve core and the like; the lower part is provided with a step passage hole with a thread at the upper end for installing a valve seat component; the left side is a channel hole of a medium inlet, and the right side is a newly designed backflow hole. The lower part and the left side of the valve body 1 are both externally connected through a flange with a neck, and the upper part and the right side are both externally connected through a plane; on the upper, lower, left and right external connected neck flange or plane, a trapezoidal pad ring groove and uniformly distributed stud holes or threaded blind holes are respectively processed, which are coaxial with the channel hole. The hard alloy module 21 is a combination of two cylinders with different diameters, one end with a large diameter is embedded in a central hole of the blind flange 22, and the other end with a small diameter is inserted in a backflow hole on the right side of the valve body 1, so that the impact of ultrahigh pressure sand-containing media is resisted. The joints of the upper end surface of the valve body 1, the valve cover 4 and the right side surface of the valve body 1 and the blind flange 22 are all sealed by steel sealing backing rings 24 under the extrusion of stud nuts 25 so as to bear the ultrahigh pressure of more than 100 MPa.
In fig. 1 and 2, the valve cover component of the present invention is composed of a valve cover 4, a sealing assembly 15, a pressure relief valve 17, a cylindrical end screw 19, an outer sealing ring 20 and an inner sealing ring 23. In the valve cover member: the center of the valve cover 4 is a multi-stage step through hole with two thick ends and a thin middle part, and the upper end is a step hole with internal threads at the inlet for installing a sealing component 15; at the lower end is a smooth cylindrical bore with a groove at the inlet for the installation of the inner seal 23 and the valve stem 3. The upper end of the valve cover 4 is provided with a stud which is provided with an external thread and a tool withdrawal groove and is used for connecting a bracket component; the middle part is a large-diameter connecting flange, a trapezoidal gasket ring groove and uniformly distributed stud holes are processed below the connecting flange and are connected with the valve body 1; a radial step hole with threads at the inlet is processed on the circumference of the flange, and a pressure relief valve 17 is arranged at the orifice; the lower end is a hollow cylinder with a conical surface, a groove is processed on the outer surface below the cylinder, and an outer sealing ring 20 is arranged in the groove; two radial threaded holes which are internally provided with cylindrical end screws 19 are symmetrically processed above the groove and are used for preventing the valve rod from rotating; a T-shaped pressure balance hole is drilled on the upward side wall of the conical surface at the lower end of the valve cover 4, the pressure balance hole crosses the outer sealing ring 20 and the inner sealing ring 23, the outer opening at the upper end of the pressure balance hole is positioned on the outer circumference of the valve cover 4, and the inner opening at the upper end of the pressure balance hole is communicated with the central hole of the valve cover 4, so that the pressure in the cylindrical hole at the lower section of the valve cover 4 and the pressure in the valve cavity are kept balanced, and the opening and closing torque of the throttle valve and the axial stress of the. The pressure relief valve 17 of the present invention is installed on the circumferential edge of the coupling flange of the valve cap 4, and is communicated with the valve chamber through a gap between the valve rod 3 and the valve cap 4 and a T-shaped pressure balance hole, so that the residual pressure in the valve body 1 is discharged during maintenance.
In fig. 1 and 3, the sealing assembly 15 in the valve cover part is formed by stacking a metal pressing cap, a layer of sealing ring with a square V-shaped groove cross section, a layer of sealing ring with a symmetrical wing-shaped cross section, a layer of composite sealing ring with a butt-shaped cross section and a layer of retaining ring with an inverted-T-shaped cross section from top to bottom; the three layers of sealing rings and the check ring are molded by engineering plastics of Polyetheretherketone (PEEK) or Polytetrafluoroethylene (PTFE), and an annular metal spring with a V-shaped section bent at the top is arranged in the inner cavity of the composite sealing ring with an opposite-shaped section to prevent ultrahigh pressure in the valve cavity from leaking from the valve rod 3
In fig. 1 and 4, an outer sealing ring 20 and an inner sealing ring 23 in the valve cover component are both made of FS-type elastic sealing rings; the main body material of the FS sealing ring is FKM fluororubber or HNBR high saturated hydrogenated nitrile rubber, and two elastic steel wire rings are respectively embedded at two shoulders of the convex end of the FS sealing ring so as to improve the pressure resistance of the FS sealing ring.
In fig. 1 and 5, the valve core component of the valve stem of the invention, which consists of the valve core 2, the valve stem 3 and the cylindrical pin 18, is arranged in the central holes of the valve cover component, the bracket component and the driving component. The valve core 2 is made of hard alloy materials, the upper end of the valve core is a cylinder with a thin diameter, and a radial through hole is drilled in the cylinder; the lower end is a cylinder with a thicker diameter, and a wedge surface is processed from the lower end surface upwards; the wedge surface is a circular arc concave surface, the cross section of the wedge surface is crescent from top to bottom from full to loss, and the wedge surface is cylindrical so as to keep the medium flowing as much as possible. The upper section of the valve rod 3 is a stud which is connected with a valve rod nut 13; the middle section is a smooth cylinder with a slightly larger diameter so as to facilitate the sealing of the sealing component 15; the lower section is a cylinder with the diameter being thickened, two symmetrical semi-through axial elongated slots are milled on the thickened cylinder and are in sliding fit with two symmetrical cylindrical end screws 19 which are radially arranged on a hollow cylinder at the lower end of the valve cover 4, so that the valve rod 3 is prevented from rotating; the lower end of the thickened cylinder is also provided with an axial blind hole and a radial pin hole which are fixedly connected with the upper end of the valve core 2. On the upper end face of the valve rod 3, a threaded blind hole is also processed for connecting with an indicating rod 9 in a display component so as to output the opening and closing information of the valve.
The bracket component of the invention consists of a bracket 5 and a set screw 16. The bracket 5 is a T-shaped structural part, the center of the bracket is a through stepped hole, and the lower end of the stepped hole is a threaded hole with a large diameter and is connected with the upper end of the valve cover 4; the upper end is a cylindrical bore of relatively small diameter, which is part of the valve stem 3. The upper end of the bracket 5 is provided with a flange with a large diameter, and the flange is connected with a manual bevel gear driver 6 through connecting bolts 14 through evenly distributed bolt holes; the lower end of the hollow cylinder is a hollow cylinder with a reduced diameter, two small threaded holes are symmetrically drilled at the lower edge of the hollow cylinder, and a set screw 16 is respectively arranged in each small threaded hole to prevent the support 5 and the valve cover 4 from deflecting after being assembled.
The driving part of the invention adopts a universal manual bevel gear driver 6, which consists of a hand wheel, a pair of large and small bevel gears, a bearing, a valve rod nut 13, an end cover, a shell, a bottom cover plate, a matched sealing element and a matched connecting piece. The bottom cover plate is provided with threaded holes which are uniformly distributed and are fixedly connected with the bracket 5; a threaded hole with a larger diameter is formed above the shell, a top cover can be installed, and a display component or other components can be installed. The valve rod nut 13 of the invention is formed by modifying a large bevel gear shaft in a manual bevel gear driver 6; the upper end of the cylinder is provided with a step and is connected with a thrust bearing in the shell; the lower end of the bevel gear is provided with a spline column which is arranged in a spline hole at the center of the large bevel gear; the upper half part of a through hole in the center of the valve body is processed into a cylindrical hole, and the lower half part of the through hole is processed into a threaded hole and is connected with a stud at the upper section of the valve rod 3, so that the rotary motion of the bevel gear is converted into the axial motion of the valve core component of the valve rod.
In fig. 1 and 6, the display part of the present invention is composed of a sealing gasket 7, a through hole top cover 8, an indicating rod 9, a spring washer 10, a flat washer 11 and an O-ring 12. The through-hole top cover 8 can be modified by a top cover originally provided in the manual bevel gear driver 6: the blind hole in the center is changed into a cylindrical through hole with a groove cut at the upper opening, and an indicating rod 9 and an O-shaped sealing ring 12 are arranged in the through hole; the circular cover plate with larger diameter at the upper end and the screw cylinder with the tool withdrawal groove at the lower end are kept unchanged, and after a sealing gasket 7 is added, the circular cover plate and the screw cylinder are connected and sealed with a threaded hole above a shell of the manual bevel gear driver 6. The main body part of the indicating rod 9 is a cylinder with the same diameter, and the upper end of the indicating rod is provided with a hexagonal blind hole for being conveniently disassembled and assembled by a wrench; the lower end of the valve rod is processed into a screw head with a reduced diameter, and after a spring washer 10 and a flat washer 11 are arranged, the screw head is fixedly connected with a threaded blind hole at the upper end of the valve rod 3 and moves up and down under the driving of the valve rod 3. The outer surface of the cylinder of the indicating rod 9 is engraved with ten horizontal position lines with equal intervals, and characters phi XX.Xmm are correspondingly engraved above each position line; the numerical value in each group of characters is increased from phi 0.0mm from top to bottom, longitudinally arranged and line by line; the above-mentioned characters are uniformly distributed in three groups or four groups on the circumference of the indicating rod so as to make observation from different directions. The lifting indicating rod 9 displays the opening and closing degree and the equivalent aperture of the throttle valve by using the relative position of the horizontal position line on the outer surface and the upper end plane of the through hole end cover 8, so that a user can calculate the flow according to the condition of a field medium.
The valve seat component of the present invention is comprised of a compression nut 26 and a valve seat 27. The center of the compression nut 26 is processed into a step hole with a large lower part and a small upper part, and the step hole is used for pressing a round step at the upper end of the valve seat 27 to prevent upward floating; the excircle is processed into a screw cylinder which is fixedly connected with a step channel hole with threads at the lower part in the valve body 1; on the upper end face of the gland nut 26, 4 blind holes are symmetrically drilled for easy tool assembly and disassembly. The valve seat 27 is made of hard alloy material, is a hollow cylinder with a thick upper part and a thin lower part, is fixed in the valve body 1 under the clamping of the compression nut 26, and has a length penetrating through the whole channel hole below the valve body 1, so that the wear resistance of the valve seat is improved, and the valve seat is convenient to replace after being worn.
Claims (9)
1. The utility model provides a laborsaving durable manual wedge choke valve of superhigh pressure, is formed by valve body part, valve gap part, valve rod case part, support part, driver part, display element, valve seat part and supporting sealing member, connector combination, characterized by: the valve body in the valve body component is
The type four-way structure: a valve cavity hole above the valve body is internally and externally provided with a valve cover component, a valve rod valve core component, a support component, a driving component and a display component, wherein the driving component is a general manual bevel gear driver and drives the valve rod valve core component to move up and down by using a valve rod nut at the center of a large bevel gear; the display component is arranged at the top end of the valve rod valve core component and the upper end of the manual bevel gear driver shell and displays the equivalent aperture of the opening and closing of the valve by using the relative position of a horizontal position line of the outer surface of the indicating rod and the upper end plane of the through hole end cover; a channel hole and a neck flange which is externally connected are arranged below the valve body, a valve seat part is arranged in the channel hole, a valve seat in the valve seat part is made of hard alloy materials, the upper part of the valve seat is thick, the lower part of the valve seat is thin, and the length of the valve seat penetrates through the whole channel hole below the valve body; the left side of the device is provided with a channel hole of a medium inlet which is externally connected through a neck flange; the right side of the device is provided with a newly designed backflow hole, and a blind flange embedded with a hard alloy module is arranged at an orifice.
2. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: the joints of the upper end surface of the valve body, the valve cover and the right side surface of the valve body and the blind flange are all made of steel sealing backing rings, and sealing is carried out under the extrusion of the stud nut.
3. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: in the valve cover member: a T-shaped pressure balance hole is drilled on the side wall of the lower end of the valve cover, which is upward in the conical surface, the pressure balance hole crosses the outer sealing ring and the inner sealing ring, the outer opening of the upper end of the pressure balance hole is positioned on the outer circumference of the valve cover, and the inner opening of the upper end of the pressure balance hole is communicated with the central hole of the valve cover.
4. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: in the valve cover member: the pressure relief valve is arranged on the circumferential edge of the connecting flange of the valve cover and is communicated with the valve cavity through a gap between the valve rod and the valve cover and the T-shaped pressure balance hole.
5. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: the sealing assembly in the valve cover part is formed by superposing a metal press cap, a layer of sealing ring with a square V-shaped groove cross section, a layer of sealing ring with a symmetrical wing-shaped cross section, a layer of composite sealing ring with a butt-shaped cross section and a layer of retaining ring with an inverted T-shaped cross section from top to bottom; the three layers of sealing rings and the check ring are molded by engineering plastics of Polyetheretherketone (PEEK) or Polytetrafluoroethylene (PTFE), and an annular metal spring with the top bent into an arc and a V-shaped section is arranged in the inner cavity of the composite sealing ring with an abutting section.
6. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: an outer sealing ring and an inner sealing ring in the valve cover part are both FS type elastic sealing rings; the main body material of the FS sealing ring is FKM fluororubber or HNBR high saturated hydrogenated nitrile rubber, and two elastic steel wire rings are respectively embedded at two shoulders of the convex end of the FS sealing ring.
7. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: the valve core 2 is made of hard alloy materials, the upper end of the valve core is a cylinder with a thin diameter, and a radial through hole is drilled in the cylinder; the lower end is a cylinder with a thicker diameter, and a wedge surface is processed from the lower end surface upwards; the wedge surface is a circular arc concave surface, and the cross section of the wedge surface is crescent from top to bottom from full to deficiency.
8. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: the valve rod nut is formed by reforming a large bevel gear shaft in a manual bevel gear driver; the upper end of the cylinder is provided with a step, and the lower end of the cylinder is provided with a spline column; the upper half part of a through hole in the center of the hollow cylinder is processed into a cylindrical hole, and the lower half part of the through hole is processed into a threaded hole.
9. The ultra-high pressure manual wedge throttle valve of claim 1, wherein: the main body part of the indicating rod is a cylinder with the same diameter, the upper end of the indicating rod is provided with a hexagonal blind hole, and the lower end of the indicating rod is provided with a screw head with a reduced diameter; the outer surface of the cylinder of the indicating rod is engraved with ten horizontal position lines with equal intervals, and characters phi XX.Xmm are correspondingly engraved above each position line; the numerical value in each group of characters is increased from phi 0.0mm from top to bottom, longitudinally arranged and line by line; the characters are evenly distributed in three or four groups on the circumference of the indicating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110639980.XA CN113339539A (en) | 2020-08-31 | 2020-08-31 | Labor-saving durable ultrahigh-pressure manual wedge-type throttle valve |
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| CN202010918706.1A CN111963105A (en) | 2020-08-31 | 2020-08-31 | Ultrahigh pressure kill manifold with throttling pipeline |
| CN202110639980.XA CN113339539A (en) | 2020-08-31 | 2020-08-31 | Labor-saving durable ultrahigh-pressure manual wedge-type throttle valve |
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| CN202110639980.XA Pending CN113339539A (en) | 2020-08-31 | 2020-08-31 | Labor-saving durable ultrahigh-pressure manual wedge-type throttle valve |
| CN202111078654.2A Pending CN113669471A (en) | 2020-08-31 | 2020-08-31 | Ball screw driven ultrahigh-pressure sand-prevention type tailless rising stem flat valve |
| CN202010918706.1A Pending CN111963105A (en) | 2020-08-31 | 2020-08-31 | Ultrahigh pressure kill manifold with throttling pipeline |
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| CN202111078654.2A Pending CN113669471A (en) | 2020-08-31 | 2020-08-31 | Ball screw driven ultrahigh-pressure sand-prevention type tailless rising stem flat valve |
| CN202010918706.1A Pending CN111963105A (en) | 2020-08-31 | 2020-08-31 | Ultrahigh pressure kill manifold with throttling pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263779A (en) * | 2022-01-23 | 2022-04-01 | 芜湖市金贸流体科技股份有限公司 | Digital locking balance valve and working method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733418B (en) * | 2023-08-11 | 2023-11-03 | 山东中力高压阀门股份有限公司 | Ultra-high pressure fracturing valve with sand prevention structure |
| CN118728315A (en) * | 2024-09-02 | 2024-10-01 | 江苏宏泰石化机械有限公司 | Ultra-high pressure hydraulic wellhead flat valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102287157A (en) * | 2011-09-07 | 2011-12-21 | 盐城市大冈石油工具厂有限责任公司 | Multifunctional well-killing open flow manifold |
| CN206246089U (en) * | 2016-10-16 | 2017-06-13 | 江苏宏泰石化机械有限公司 | A kind of liquid/hand two moves high pressure choke manifold |
| CN206495660U (en) * | 2016-10-16 | 2017-09-15 | 江苏宏泰石化机械有限公司 | A kind of hydraulic pressure, handwheel dual drive High-pressure well killing manifold |
| CN108331929A (en) * | 2018-04-04 | 2018-07-27 | 盐城雄威石化通用机械设备有限公司 | High-pressure well mouth gear drives flap type |
| CN212296307U (en) * | 2020-08-31 | 2021-01-05 | 江苏宏泰石化机械有限公司 | Ultrahigh pressure kill manifold with throttling pipeline |
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2020
- 2020-08-31 CN CN202110639980.XA patent/CN113339539A/en active Pending
- 2020-08-31 CN CN202111078654.2A patent/CN113669471A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263779A (en) * | 2022-01-23 | 2022-04-01 | 芜湖市金贸流体科技股份有限公司 | Digital locking balance valve and working method thereof |
Also Published As
| Publication number | Publication date |
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| CN113669471A (en) | 2021-11-19 |
| CN111963105A (en) | 2020-11-20 |
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