High-temperature-resistant and corrosion-resistant cage sleeve type throttle valve for high mining

Abstract

The invention discloses a high-temperature-resistant and corrosion-resistant cage type throttle valve for high mining in the technical field of throttle valves, which comprises a valve body and a cage body, one side of the valve body is provided with a support cylinder, the support cylinder is internally provided with a control assembly, the control assembly can control the flow of the cage body, and the valve body comprises a left valve body and a right valve body; the left valve body and the right valve body are combined to form a medium circulation cavity, the sleeve cage body is located between the left valve body and the right valve body, the right valve body is fixedly connected with the supporting cylinder, a pressure reduction assembly is arranged at the position, below the sleeve cage body, of the left valve body and the right valve body which are combined, and the pressure reduction assembly can reduce the pressure of a medium close to the sleeve cage body. And after the lower connecting pipe, the left valve body and the right valve body are combined, the lower connecting pipe can be installed at the lower end of the lower connecting pipe, fasteners are symmetrically arranged on the lower connecting pipe, and the stability after the left valve body and the right valve body are combined can be enhanced through the fasteners.

Description

Technical Field

[0001] The present invention relates to the technical field of throttle valves, and specifically relates to a high-opening cage-type throttle valve with high temperature resistance and corrosion resistance. Background Art

[0002] Throttle valves are commonly used in oil and gas extraction. Due to the high-pressure extraction environment, the flow rate of the medium flowing into the throttle valve is very large, and generally, the pressure on the throttle holes of the cage is the greatest after flowing in, generating eddy currents, which cause great erosion and wear to the valve core and valve seat. Many throttle valves directly set the conical section at the top of the valve stem as detachable.

[0003] The disassembly of the conical section is cumbersome, and multiple groups of parts on it need to be disassembled before disassembling the cage. Omissions are likely to occur during the disassembly and assembly process, and the disassembly and assembly are difficult, with high technical requirements, cumbersome operation, low efficiency, and the cage cannot be replaced efficiently. Summary of the Invention

[0004] The technical problem of the present invention is to provide a high-opening cage-type throttle valve with high temperature resistance and corrosion resistance, which can quickly disassemble and assemble the cage.

[0005] To achieve the above object, the present invention provides the following technical solution: A high-opening cage-type throttle valve with high temperature resistance and corrosion resistance, including a valve body main body and a cage main body. A support cylinder is installed on one side of the valve body main body, and a control component is arranged inside the support cylinder. The control component can control the flow rate of the cage main body. The valve body main body includes: A left valve body and a right valve body. After the left valve body and the right valve body are combined, a medium flow cavity is formed. The cage main body is located in the middle position between the left valve body and the right valve body. The right valve body is fixedly connected to the support cylinder. A pressure reducing component is arranged at the position below the cage main body after the left valve body and the right valve body are combined. The pressure reducing component can reduce the pressure of the medium close to the cage main body. A lower connecting pipe. After the left valve body and the right valve body are combined, the lower connecting pipe can be installed at its lower end. Fasteners are symmetrically arranged on the lower connecting pipe, and the fasteners can strengthen the stability after the left valve body and the right valve body are combined.

[0006] As a further solution of the present invention, a spacer ring is fixedly installed on the left valve body. A through groove is arranged on the spacer ring. A filling layer is arranged at the position corresponding to the lower part of the spacer ring on the left valve body. An inner fixing plate is fixedly installed above the through groove on the left valve body. A filling layer is also fixedly installed at the lower end of the right valve body. The filling layer, the inner fixing plate, and the spacer ring are all located at the combined gap between the left valve body and the right valve body. The cage main body is located between the spacer rings.

[0007] As a further aspect of the present invention, the pressure reducing component includes a lower partition plate and a flow dividing rod. The lower partition plate is fixedly installed between the filling layer and the right valve body. A plurality of rotating plates are rotatably connected to the lower partition plate. The flow dividing rod is fixedly installed between the lower through grooves of the spacer ring. The flow dividing rod is vertically below the lower throttle holes of the sleeve cage body.

[0008] As a further aspect of the present invention, a sleeve cage seat is fixedly installed in the left valve body. A pressure cap is installed at one end of the right valve body away from the left valve body. A valve rod is arranged between the pressure caps. A plunger is fixedly installed at one end of the valve rod close to the sleeve cage body. A spacer sleeve is arranged between the inner wall of the right valve body and the plunger. A wear-resistant guide ring is arranged between the valve rod and the pressure cap. A piston ring is arranged between the plunger and the pressure cap.

[0009] As a further aspect of the present invention, the control component includes a bearing seat and a handwheel. The bearing seat is fixedly installed at one end of the support cylinder away from the right valve body. A transmission nut is rotatably installed in the bearing seat. A tappet is threadedly connected in the transmission nut. One end of the transmission nut extends outside the bearing seat and is fixedly connected to the handwheel. A locking screw is rotatably installed at the upper end of the bearing seat. The lower end of the locking screw can abut against the surface of the transmission nut. A plurality of cylindrical roller bearings are rotatably arranged between the inner wall of the bearing seat and the transmission nut. One end of the valve rod extends into the support cylinder. One end of the tappet is clamped at the end of the valve rod.

[0010] As a further aspect of the present invention, the fastener includes a threaded rod, a fastening nut and symmetrically arranged limit blocks. The limit plates are symmetrically installed at the upper end of the lower connecting pipe. Fastening nuts are rotatably installed on the outer sides of the limit blocks. The threaded rod can penetrate through the symmetrically arranged limit blocks. The threaded rod can pass through between the left valve body and the right valve body.

[0011] As a further aspect of the present invention, calcium-based grease is filled when assembling the left valve body, the right valve body and their inner sleeve cage seats, valve rods, transmission nuts and tappets. Anti-rust paint is sprayed on the outer surfaces of the valve body body, the support cylinder and the bearing seat.

[0012] As a further aspect of the present invention, an indicating groove is arranged at the lower end of the support cylinder. A scale mark is arranged in the indicating groove. The scale mark can change as the valve rod moves.

[0013] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, the left valve body and the right valve body are combined to form a medium flow passage. The medium enters between the left valve body and the right valve body from the lower connecting pipe and flows out from the left side of the left valve body. The cage body is located between the left valve body and the right valve body. When the cage body needs to be replaced, the left valve body and the right valve body can be disassembled and assembled, so as to quickly replace the cage body without damaging the control components in the support cylinder, etc., reduce the parts that need to be disassembled when replacing the cage body, shorten the replacement time of the cage body, and reduce the replacement difficulty of the cage body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a structural sectional view of the present invention; Figure 3 is for the present invention Figure 2 partial schematic view of the structure at A in; Figure 4 is for the present invention Figure 2 partial schematic view of the structure at B in; Figure 5 is a schematic view of the structure of the present invention in a disassembled state Figure 1 ; Figure 6 is a schematic view of the structure of the present invention in a disassembled state Figure 2 。

[0016] In the drawings: 1, valve body main body; 101, left valve body; 102, right valve body; 103, lower connecting pipe; 2, support cylinder; 3, bearing seat; 4, hand wheel; 5, locking screw; 6, fastener; 7, inner fixing plate; 8, spacer ring; 9, filling layer; 10, through groove; 11, cage seat; 12, cage body; 13, plunger; 14, compression cap; 15, valve stem; 16, tappet; 17, transmission nut; 18, cylindrical roller bearing; 19, lower partition plate; 20, rotating plate; 21, flow dividing rod; 22, spacer sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0018] Please refer to Figures 1 - 6 , the present invention provides a technical solution: a high-temperature and corrosion-resistant cage-type throttle valve for high openings, including a valve body main body 1 and a cage main body 12. A support cylinder 2 is installed on one side of the valve body main body 1. A control component is arranged inside the support cylinder 2, and the control component can control the flow rate of the cage main body 12. The valve body main body 1 includes: A left valve body 101 and a right valve body 102. After the left valve body 101 and the right valve body 102 are combined, a medium flow-through cavity is formed. The cage main body 12 is located in the middle of the left valve body 101 and the right valve body 102. The right valve body 102 is fixedly connected to the support cylinder 2. A pressure-reducing component is arranged at a position below the cage main body 12 after the left valve body 101 and the right valve body 102 are combined. The pressure-reducing component can reduce the pressure of the medium close to the cage main body 12; A lower connecting pipe 103. After the left valve body 101 and the right valve body 102 are combined, the lower connecting pipe 103 can be installed at its lower end. Fasteners 6 are symmetrically arranged on the lower connecting pipe 103, and the fasteners 6 can strengthen the stability of the combination of the left valve body 101 and the right valve body 102.

[0019] During operation, in the present invention, a medium flow-through channel is formed after the left valve body 101 and the right valve body 102 are combined. The medium enters between the left valve body 101 and the right valve body 102 from the lower connecting pipe 103 and flows out from the left side of the left valve body 101. The cage main body 12 is located between the left valve body 101 and the right valve body 102. When the cage main body 12 needs to be replaced, the left valve body 101 and the right valve body 102 can be disassembled and assembled, so as to quickly replace the cage main body 12 without damaging the control components in the support cylinder 2, etc., reduce the parts that need to be disassembled when replacing the cage main body 12, shorten the replacement time of the cage main body 12, and reduce the replacement difficulty of the cage main body 12. The pressure-reducing component can reduce the pressure when the medium flowing in from the lower connecting pipe 103 impacts the surface of the cage main body 12, reduce the erosion and wear of the cage main body 12, thereby increasing the service life of the cage main body 12, and the firmness and stability of the connection between the left valve body 101 and the right valve body 102 are increased through the cooperation of the fasteners 6, etc., ensuring that the combination of the left valve body 101 and the right valve body 102 can allow high-pressure media to pass through.

[0020] As a further solution of the present invention, a spacer ring 8 is fixedly installed on the left valve body 101. A through groove 10 is provided on the spacer ring 8. A filling layer 9 is provided at a position corresponding to the lower part of the spacer ring 8 on the left valve body 101. An inner fixing plate 7 is fixedly installed above the through groove 10 on the left valve body 101. A filling layer 9 is also fixedly installed at the lower end of the right valve body 102. The filling layer 9, the inner fixing plate 7 and the spacer ring 8 are all located at the combined gap between the left valve body 101 and the right valve body 102. The sleeve cage body 12 is located between the spacer rings 8.

[0021] During operation, in the present invention, the spacer ring 8, the filling layer 9 and the inner fixing plate 7 of the left valve body 101 and the right valve body 102 all cover the gap where the left valve body 101 and the right valve body 102 are connected. The medium is blocked by the spacer ring 8, the filling layer 9 and the inner fixing plate 7 to prevent the medium from directly eroding the connection gap. Moreover, sealing rings are provided at the edges of the spacer ring 8, the filling layer 9 and the inner fixing plate 7. The sealing performance of the inner cavity after the left valve body 101 and the right valve body 102 are connected is ensured through the blocking of the spacer ring 8, the filling layer 9 and the inner fixing plate 7 and the cooperation of the sealing rings.

[0022] As a further solution of the present invention, the pressure reducing assembly includes a lower partition plate 19 and a flow dividing rod 21. The lower partition plate 19 is fixedly installed between the filling layer 9 and the right valve body 102. A plurality of rotating plates 20 are rotatably connected to the lower partition plate 19. The flow dividing rod 21 is fixedly installed between the lower through grooves 10 of the spacer ring 8. The flow dividing rod 21 is vertically below the throttling holes at the lower end of the sleeve cage body 12.

[0023] During operation, after the medium enters through the lower connecting pipe 103, the medium impacts the lower partition plate 19. The rotation of the rotating plate 20 is driven by the flow of the medium, and the medium flow channel is opened by the rotation of the rotating plate 20, so that the medium can continue to flow upward. The rotation of the rotating plate 20 converts a part of the medium pressure into mechanical energy, thereby reducing the pressure when the medium impacts the sleeve cage body 12. In addition, before the medium approaches the throttling holes of the sleeve cage body 12, the medium is divided by the flow dividing rod 21, reducing the mass flow of the grit of the medium impacting the edge of the throttling holes of the sleeve cage body 12 per unit area at the same time, reducing the possibility of erosion wear of the throttling holes of the sleeve cage body 12, and increasing the service life of the sleeve cage body 12.

[0024] As a further solution of the present invention, a sleeve cage seat 11 is fixedly installed inside the left valve body 101. A compression cap 14 is installed at one end of the right valve body 102 away from the left valve body 101. A valve rod 15 is arranged between the compression caps 14. A plunger 13 is fixedly installed at one end of the valve rod 15 close to the sleeve cage body 12. A spacer sleeve 22 is arranged between the inner wall of the right valve body 102 and the plunger 13. A wear-resistant guiding ring is arranged between the valve rod 15 and the compression cap 14. A piston ring is arranged between the plunger 13 and the compression cap 14.

[0025] During operation, the present invention drives the plunger 13 to move through the valve stem 15, enters the sleeve cage body 12 through the plunger 13, blocks the throttle hole of the sleeve cage body 12 through the plunger 13, and adjusts the blocking amount of the throttle hole by the plunger 13 through the valve stem 15 to adjust the flow rate of the valve body.

[0026] As a further aspect of the present invention, the control assembly includes a bearing seat 3 and a handwheel 4. The bearing seat 3 is fixedly installed at one end of the support cylinder 2 away from the right valve body 102. A transmission nut 17 is rotatably installed in the bearing seat 3. A tappet 16 is threadedly connected in the transmission nut 17. One end of the transmission nut 17 extends outside the bearing seat 3 and is fixedly connected to the handwheel 4. A locking screw 5 is rotatably installed at the upper end of the bearing seat 3. The lower end of the locking screw 5 can abut against the surface of the transmission nut 17. A plurality of sets of cylindrical roller bearings 18 are rotatably arranged between the inner wall of the bearing seat 3 and the transmission nut 17. One end of the valve stem 15 extends into the support cylinder 2, and one end of the tappet 16 is clamped at the end of the valve stem 15.

[0027] During operation, the present invention drives the transmission nut 17 to rotate by rotating the handwheel 4. The rotation of the transmission nut 17 interacts with the tappet 16, thereby driving the tappet 16 to move, and driving the valve stem 15 to move through the movement of the tappet 16.

[0028] As a further aspect of the present invention, the fastener 6 includes a threaded rod, a fastening nut and symmetrically arranged limit blocks. The limit plates are symmetrically installed at the upper end of the lower connecting pipe 103. Fastening nuts are rotatably installed on the outer sides of the limit blocks. The threaded rod can penetrate through the symmetrically arranged limit blocks, and the threaded rod can pass through between the left valve body 101 and the right valve body 102.

[0029] During operation, the present invention makes the left valve body 101 and the right valve body 102 fit more closely through the threaded rod and the fastening nut on the fastener 6, and cooperates with the screws and nuts at the upper ends of the left valve body 101 and the right valve body 102 to ensure the tight connection between the left valve body 101 and the right valve body 102.

[0030] As a further aspect of the present invention, calcium-based grease is filled when assembling the left valve body 101, the right valve body 102 and their inner sleeve cage seats 11, valve stems 15, transmission nuts 17 and tappets 16. Antirust paint is sprayed on the outer surfaces of the valve body body 1, the support cylinder 2 and the bearing seat 3.

[0031] During operation, ensure that the spliced valve body body and its internal parts can be smoothly driven to ensure the quality of the finished throttle valve.

[0032] As a further aspect of the present invention, an indicating groove is provided at the lower end of the support cylinder 2, and a scale mark is provided in the indicating groove. The scale mark can change as the valve stem 15 moves.

[0033] During operation, the greater the distance that the tappet 16 moves to the right with respect to the valve body 102 in the present invention, the smaller the index displayed on the scale mark.

[0034] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A high-temperature and corrosion-resistant high-opening cage-type throttle valve, comprising a valve body main body (1) and a cage main body (12), characterized in that: A support cylinder (2) is installed on one side of the valve body main body (1). A control assembly is arranged inside the support cylinder (2), and the control assembly can control the flow rate of the cage body (12). The valve body main body (1) includes: A left valve body (101) and a right valve body (102). After the left valve body (101) and the right valve body (102) are combined, a medium flow cavity is formed. The cage body (12) is located in the middle position between the left valve body (101) and the right valve body (102). The right valve body (102) is fixedly connected to the support cylinder (2). A pressure reducing assembly is arranged at the position below the cage body (12) after the left valve body (101) and the right valve body (102) are combined, and the pressure reducing assembly can reduce the pressure of the medium near the cage body (12); A lower connecting pipe (103). After the left valve body (101) and the right valve body (102) are combined, the lower connecting pipe (103) can be installed at its lower end. Fasteners (6) are symmetrically arranged on the lower connecting pipe (103), and the fasteners (6) can reinforce the stability after the left valve body (101) and the right valve body (102) are combined.

2. A high-temperature and corrosion-resistant high-opening cage-type throttle valve according to claim 1, characterized in that: A partition ring (8) is fixedly installed on the left valve body (101). A through groove (10) is arranged on the partition ring (8). A filling layer (9) is arranged at the position corresponding to the lower part of the partition ring (8) on the left valve body (101). An inner fixing plate (7) is fixedly installed above the through groove (10) on the left valve body (101). A filling layer (9) is also fixedly installed at the lower end of the right valve body (102). The filling layer (9), the inner fixing plate (7) and the partition ring (8) are all located at the combined gap between the left valve body (101) and the right valve body (102), and the cage body (12) is located between the partition rings (8).

3. A high-temperature and corrosion-resistant high-opening cage-type throttle valve according to claim 2, characterized in that: The pressure reducing assembly includes a lower partition plate (19) and a flow dividing rod (21). The lower partition plate (19) is fixedly installed between the filling layer (9) and the right valve body (102). A plurality of rotating plates (20) are rotatably connected to the lower partition plate (19). The flow dividing rod (21) is fixedly installed between the lower through grooves (10) at the lower end of the partition ring (8), and the flow dividing rod (21) is vertically below the throttling holes at the lower end of the cage body (12).

4. A high-temperature and corrosion-resistant high-opening cage-type throttle valve according to claim 3, characterized in that: A cage seat (11) is fixedly installed inside the left valve body (101). A pressure cap (14) is installed at one end of the right valve body (102) away from the left valve body (101). A valve rod (15) is arranged between the pressure caps (14). A plunger (13) is fixedly installed at one end of the valve rod (15) close to the cage body (12). A spacer sleeve (22) is arranged between the inner wall of the right valve body (102) and the plunger (13). A wear-resistant guiding ring is arranged between the valve rod (15) and the pressure cap (14), and a piston ring is arranged between the plunger (13) and the pressure cap (14).

5. A high-temperature and corrosion-resistant high-opening cage-type throttle valve according to claim 4, characterized in that: The control assembly includes a bearing seat (3) and a handwheel (4), the bearing seat (3) is fixedly mounted on one end of the support tube (2) away from the right valve body (102), a transmission nut (17) is rotatably mounted in the bearing seat (3), the transmission nut (17) is internally threadedly connected to a push rod (16), one end of the transmission nut (17) extends outside the bearing seat (3) and is fixedly connected to the handwheel (4), a locking screw (5) is rotatably mounted on the upper end of the bearing seat (3), the lower end of the locking screw (5) can abut against the surface of the transmission nut (17), a plurality of sets of cylindrical roller bearings (18) are rotatably arranged between the inner wall of the bearing seat (3) and the transmission nut (17), one end of the valve stem (15) extends into the support tube (2), and one end of the push rod (16) is clamped on the end of the valve stem (15).

6. A high-temperature and corrosion-resistant high-opening cage-type throttle valve according to claim 5, characterized in that: The fastener (6) comprises a threaded rod, a fastening nut and a symmetrically arranged limit block. The limit plate is symmetrically mounted on the upper end of the lower connecting tube (103). The outer sides of the limit blocks are rotatably mounted with a fastening nut. The threaded rod can penetrate the symmetrically arranged limit blocks. The threaded rod can pass between the left valve body (101) and the right valve body (102).

7. A high-temperature and corrosion-resistant high-opening cage-type throttle valve according to claim 6, characterized in that: When assembling the left valve body (101) and the right valve body (102) and their inner cage seat (11), the valve stem (15), the transmission nut (17) and the tappet (16), calcium-based grease is added, and the outer surfaces of the valve body (1), the support cylinder (2) and the bearing seat (3) are sprayed with anti-rust paint.

8. A high-temperature and corrosion-resistant high-opening cage-type throttle valve according to claim 7, characterized in that: The lower end of the support cylinder (2) is provided with an indicator groove, and a scale mark is provided in the indicator groove, and the scale mark can change as the valve stem (15) moves.

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