Ultra-high pressure seal valve

Abstract

The application discloses a kind of superhigh pressure sealing valves.The superhigh pressure sealing valve includes valve body, first adapter, second adapter and plunger, the inside of valve body has a first chamber that can be closed, plunger is arranged in first chamber and can be driven under external force, first adapter, second adapter are fixedly arranged on valve body, first adapter and second adapter are communicated with first chamber respectively, and the passage between first adapter and second adapter can be connected and communicated by plunger or be cut off by plunger to close.The application adopts two hollow adapters, when plunger is in specified state, the gap between first adapter and second adapter is communicated with first chamber through plunger to form flow channel, the sealing of the flow channel is better, and the problem of being blocked by solid particles in solution does not appear.

Description

Technical Field

[0001] This invention relates in particular to an ultra-high pressure sealing valve, belonging to the field of ultra-high pressure valve technology. Background Technology

[0002] In existing technologies, plungers are generally solid, and the valve body is equipped with an inlet, an outlet, and a channel for solution flow. The end of the plunger is conical, and the inlet opening is also conical. When the end of the plunger abuts against the inlet, it seals the pipeline. However, because the conical surface seals the opening, there will be a certain gap. When a solution containing solid particles flows, the particles can easily pass through the gap or get stuck in the gap, resulting in poor sealing. Summary of the Invention

[0003] The main objective of this invention is to provide an ultra-high pressure sealing valve, thereby overcoming the shortcomings of the prior art.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this invention includes:

[0005] This invention provides an ultra-high pressure sealing valve, comprising:

[0006] The valve body has a first chamber inside and a first opening and a second opening on its outer surface, the first opening and the second opening being in communication with the first chamber;

[0007] A first adapter is disposed on the valve body and is sealed to fit with the first opening. The first adapter has a first channel inside, and the first channel is in communication with the first chamber.

[0008] The second adapter is disposed on the valve body and is sealed to the second opening. The second adapter has a second channel inside, which is in communication with the first chamber.

[0009] A plunger is disposed in the first chamber, the plunger can be configured to a first state and a second state, and is always in sealing engagement with the valve body;

[0010] When the plunger is in the first state, a mutually communicating gap is formed between the plunger and the first channel, the second channel, and the inner wall of the first chamber. The first channel communicates with the second channel through the first chamber, forming a flow channel through which the fluid medium can pass. When the plunger is in the second state, the first channel and / or the second channel are blocked by the plunger, and the flow channel is blocked.

[0011] Furthermore, the plunger is movablely engaged with the valve body and can move under external force, thereby being configured into a first state and a second state.

[0012] In a more specific implementation, the circumferential side of the plunger is always in sealing engagement with the valve body, the first channel and the second channel are arranged sequentially along a selected direction, and the plunger can move linearly along the selected direction under the drive of an external force to switch between the first state and the second state.

[0013] Furthermore, the selected direction is the axial direction of the plunger.

[0014] Furthermore, the plunger can be moved along the selected direction to a first station and a second station by an external force. When the plunger is in the first station, the plunger has the first state; and when the plunger is in the second station, the plunger has the second state.

[0015] Furthermore, when the plunger is located at the first working position, the plunger is located on the side of the first channel away from the second channel, and has the first state; while when the plunger is located at the second working position, at least one of the first channel and the second channel is sealed by the circumferential side of the plunger.

[0016] In another more specific embodiment, the plunger has a first groove structure and a second groove structure on its circumferential side surface. The first groove structure and the second groove structure are spaced apart along the circumference of the plunger and both communicate with the end face of the plunger. The circumferential side surface is in sealing fit with the valve body. The plunger can rotate around a selected axis under the drive of an external force to switch between the first state and the second state.

[0017] When the plunger is in the first state, the first channel corresponds to the first groove structure and is connected to the first chamber through the first groove structure, the second channel corresponds to the second groove structure and is connected to the first chamber through the second groove structure, and there is a gap between the end face of the plunger and the inner wall of the first chamber. When the plunger is in the first state, at least one of the first channel and the second channel is fitted and sealed with the circumferential side of the plunger.

[0018] Furthermore, the selected axis is the axis of the plunger.

[0019] In a more specific implementation, the ultra-high pressure sealing valve further includes: a first sealing mechanism and a second sealing mechanism, the first sealing mechanism and the second sealing mechanism being disposed in the first chamber, the first sealing mechanism and the second sealing mechanism being respectively disposed on both sides of the first channel along the axial direction of the plunger, the first sealing mechanism and the second sealing mechanism being located between the plunger and the inner wall of the first chamber, and simultaneously sealingly cooperating with the plunger and the valve body.

[0020] Furthermore, a second chamber is formed by the plunger, the first sealing mechanism, the second sealing mechanism, and the inner wall of the first chamber. When the plunger is in the first state, the first channel is connected to the second chamber, and the second chamber is a part of the first chamber.

[0021] Furthermore, a third chamber is formed between the plunger, the second sealing mechanism, and the inner wall of the first chamber; when the plunger is in the first state and / or the second state, the second channel communicates with the third chamber, and the third chamber is a part of the first chamber.

[0022] Furthermore, the first sealing mechanism and the second sealing mechanism are annular components, and the plunger is sleeved inside the first sealing mechanism and the second sealing mechanism.

[0023] Furthermore, the first sealing mechanism and the second sealing mechanism are flexible components capable of undergoing recoverable deformation when compressed.

[0024] Furthermore, the first sealing mechanism and the second sealing mechanism located between the plunger and the valve body are always in a state of elastic compression, and the first sealing mechanism and the second sealing mechanism always maintain a sealing contact with the plunger and the valve body.

[0025] Furthermore, the inner diameters of both the first sealing mechanism and the second sealing mechanism are less than or equal to the outer diameter of the plunger.

[0026] Furthermore, the outer diameters of both the first sealing mechanism and the second sealing mechanism are greater than or equal to the inner diameter of the first chamber.

[0027] Furthermore, the positions of the first sealing mechanism and the second sealing mechanism within the first chamber are fixed.

[0028] Furthermore, both the first sealing mechanism and the second sealing mechanism are coaxially arranged with the plunger.

[0029] In a more specific embodiment, the ultra-high pressure sealing valve further includes: a flow ring disposed between the first sealing mechanism and the second sealing mechanism and / or between the second sealing mechanism and the bottom of the first chamber; the flow ring having a clearance hole formed by its own inner ring surface; a portion of the plunger being disposed within the clearance hole, and the plunger being able to pass through the clearance hole; the flow ring and the plunger being in clearance fit; and the flow ring having at least one guide hole extending radially through it, the sum of the radial cross-sectional areas of all the guide holes being greater than or equal to the radial cross-sectional area of ​​the guide channel.

[0030] Furthermore, the flow ring is provided with a plurality of flow guide holes, which are arranged sequentially at intervals along the circumference of the flow ring.

[0031] Furthermore, a flow guide groove is provided on the circumferential side of the flow ring, and the flow guide hole is located at the bottom of the flow guide groove.

[0032] Furthermore, the flow guide groove is an annular groove continuously arranged along the circumference of the flow ring.

[0033] Furthermore, in the axial direction of the first chamber, the first opening and the second opening are located on different radial sections.

[0034] Furthermore, the first adapter and the second adapter are sealed together with the valve body.

[0035] In a more specific implementation, the ultra-high pressure sealing valve further includes a drive mechanism that is connected to the plunger and is used to provide the external force that drives the plunger to move.

[0036] Furthermore, the drive mechanism includes a drive shaft, and the valve body also has a fourth opening that communicates with the first chamber. The drive shaft extends into the first chamber through the fourth opening and is fixedly connected to the plunger, wherein the drive shaft and the valve body are always in a motion-sealed state.

[0037] Furthermore, the drive mechanism includes a linear drive mechanism or a rotary drive mechanism, the linear drive mechanism includes a cylinder, and the drive shaft includes a piston rod.

[0038] Furthermore, the ultra-high pressure sealing valve also includes a third adapter, and the valve body is provided with a third opening, which is in communication with the first chamber. The third adapter is disposed on the valve body and is sealed to the third opening. When the third adapter is separated from the valve body, the plunger can be discharged from the third opening.

[0039] Furthermore, the third opening is located on the axial extension line of the first chamber.

[0040] Furthermore, the third opening is coaxially arranged with the first chamber.

[0041] Furthermore, the fourth opening is arranged opposite to the third opening along the axial direction of the first chamber.

[0042] Furthermore, the fourth opening, the first chamber, and the third opening are coaxially arranged.

[0043] Compared with existing technologies, the ultra-high pressure sealing valve provided by this invention uses two hollow adapters to achieve a fluid passage. The hollow adapters facilitate the disassembly and maintenance of the plunger, making the inspection and maintenance of the ultra-high pressure sealing valve simpler. Furthermore, the ultra-high pressure sealing valve provided by this invention uses two hollow adapters. When the plunger is in a specified state, a flow channel is formed between the first and second adapters through the gap between the plunger and the valve body, allowing for fluid flow. This results in better sealing performance and prevents clogging by solid particles in the solution. Attached Figure Description

[0044] Figure 1 This is a cross-sectional structural schematic diagram of an ultra-high pressure sealing valve provided in Embodiment 1 of the present invention;

[0045] Figure 2 This is a cross-sectional structural schematic diagram of an ultra-high pressure sealing valve provided in Embodiment 1 of the present invention;

[0046] Figure 3 This is a cross-sectional structural schematic diagram of an ultra-high pressure sealing valve provided in Embodiment 1 of the present invention;

[0047] Figure 4 This is a cross-sectional structural schematic diagram of an ultra-high pressure sealing valve provided in Embodiment 3 of the present invention;

[0048] Figure 5 This is a cross-sectional structural schematic diagram of an ultra-high pressure sealing valve provided in Embodiment 4 of the present invention;

[0049] Figure 6 This is a cross-sectional structural schematic diagram of a three-dimensional rendering of an ultra-high pressure sealing valve provided in a typical embodiment of the present invention;

[0050] Explanation of reference numerals in the attached drawings: Valve body-100, First opening-110, Second opening-120, Third opening-130, Fourth opening-140, First chamber-150, Second chamber-151, Third chamber-152, Piston-200, First adapter-310, First channel-311, Second adapter-320, Second channel-321, Third adapter-330, First sealing mechanism-410, Second sealing mechanism-420, First flow ring-510, Second flow ring-520. Detailed Implementation

[0051] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The following will further explain and illustrate the technical solution, its implementation process, and principles in conjunction with the accompanying drawings and specific embodiments. Unless otherwise specified, the adapters, plungers, valve bodies, sealing rings, flow meters, cylinders / motors, etc., used in the embodiments of this invention can all be obtained commercially, or can be obtained by processing unavailable parts using conventional processes known to those skilled in the art. Their specific dimensions, shapes, etc., are not limited here.

[0052] Example 1

[0053] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6 , Figure 1 , Figure 2 , Figure 6 This illustrates a state in which the plunger is in the second position and the flow channel within the ultra-high pressure sealed valve is not open. Figure 3 The diagram illustrates the state of an ultra-high pressure sealed valve when the plunger is in the first position and the flow channel within the valve is open.

[0054] An ultra-high pressure sealing valve includes a valve body 100, a first adapter 310, a second adapter 320, a third adapter 330, and a plunger 200. The valve body 100 has a first chamber 150 that can be sealed. The plunger 200 is disposed in the first chamber 150 and can move under external force. The first adapter 310, the second adapter 320, and the third adapter 330 are fixedly disposed on the valve body 100. The first adapter 310 and the second adapter 320 are respectively connected to the first chamber 150, and the channel between the first adapter 310 and the second adapter 320 can be connected and opened via the plunger 200 or closed by the plunger 200.

[0055] In this embodiment, the outer surface of the valve body 100 includes a first surface, a second surface, a third surface, and a fourth surface. A first opening 110, a second opening 120, a third opening 130, and a fourth opening 140 are respectively provided on the first surface, second surface, third surface, and fourth surface. The first opening 110, second opening 120, third opening 130, and fourth opening 140 are respectively connected to the first chamber 150. Specifically, the third surface and the fourth surface are arranged opposite each other along the axial direction of the valve body 100, and the third opening 130 and the fourth opening 140 are arranged opposite each other along the axial direction of the valve body 100. As a preferred embodiment, the third opening 130, the fourth opening 140, and the first chamber 150 are coaxially arranged; more specifically, the first chamber 150 is preferably coaxially arranged with the valve body 100.

[0056] In this embodiment, the first surface and the second surface are disposed between the third surface and the fourth surface. The third surface and the fourth surface can be regarded as two end faces of the valve body 100, and the first surface and the second surface are part of the circumferential side surface of the valve body 100.

[0057] In this embodiment, the first adapter 310 is sealed to the first opening 110. The first adapter 310 has a first channel 311 that communicates with the first chamber 150. Specifically, the first channel 311 can extend directly into the first chamber 150 or communicate with the first chamber 150 through the first opening 110. The second adapter 320 is also sealed to the second opening 120. The second adapter 320 has a second channel 321 that communicates with the first chamber 150. Specifically, the second channel 321 can extend directly into the second chamber 151 or communicate with the first chamber 150 through the second opening 120. Specifically, the first channel 311 and the second channel 321 are mainly used to introduce or export fluid media. One of the first channel 311 and the second channel 321 serves as an inlet channel, and the other as an outlet channel.

[0058] In this embodiment, the first adapter 310 and the second adapter 320 can be fixed to the valve body 100 in a manner known to those skilled in the art, such as by means of threaded connectors. The specific structure of the first adapter 310 and the second adapter 320 is not limited here.

[0059] In this embodiment, both the first adapter 310 and the second adapter 320 are hollow adapters. The inner diameter, length and other dimensions of the first channel 311 and the second channel 321 can be the same. More specifically, the structures of the first adapter 310 and the second adapter 320 can be the same. More specifically, the first adapter 310 and the second adapter support can be completely identical components.

[0060] In this embodiment, in order to achieve a better sealing fit between the first adapter 310 and the second adapter 320 and the first opening 110 and the second opening 120, the first opening 110 and the second opening 120 are preferably funnel-shaped structures, and the radial dimensions of the first opening 110 and the second opening 120 gradually decrease along the direction toward the first chamber 150.

[0061] In this embodiment, the fourth opening 140 mainly cooperates with the drive shaft of the drive mechanism that drives the plunger 200 to move, and its cooperation structure with the drive shaft will be described in detail below. Specifically, the third opening 130 is mainly used to cooperate with the drive mechanism to guide the plunger 200 out. It can be understood that the radial dimension of the third opening 130 is larger than the radial dimension of the plunger 200.

[0062] In this embodiment, the third adapter 330 is sealed to the third opening 130. When the valve body 100 is in the working state, the third adapter 330 and the third opening 130 are sealed to ensure the sealing of the first chamber 150 at this location. When the valve body 100 is not in the working state and the plunger 200 needs to be removed, the third adapter 330 can be removed and the plunger 200 can be removed. It is understood that the third adapter 330 and the valve body 100 are detachably connected, and the specific detachable structure and method can be implemented using means known to those skilled in the art.

[0063] It should be noted that the structure and method of sealing between the first adapter 310, the second adapter 320, the third adapter 330 and the valve body 100, and between the drive shaft and the fourth opening 140 can be methods known to those skilled in the art, such as using a sealing gasket, a magnetic fluid sealing structure, an oil seal structure, etc., and no specific limitation is made here.

[0064] In this embodiment, the first opening 110 and the second opening 120 are located at different axial positions in the valve body 100 or the first chamber 150, and correspondingly, the first channel 311 and the second channel 321 are also located at different axial positions.

[0065] In this embodiment, the plunger 200 can be configured to a first state and a second state, and is always in a sealing fit with the valve body 100, thereby ensuring the sealed state of other areas of the first chamber 150 (excluding the areas of the first opening 110 and the second opening 120). When the plunger 200 is in the first state, the first channel 311 and the second channel 321 are connected through the gap / space between the plunger 200 and the first chamber 150, forming a flow channel 1000 through which the fluid medium can pass. When the plunger 200 is in the second state, the first channel 311 (which can also be the first opening 110, the same below) and / or the second channel 321 (which can also be the second opening 120, the same below) are blocked by the plunger 200, and the flow channel 1000 is blocked.

[0066] In this embodiment, the outer surface of the plunger 200 includes a first end face, a second end face, and a circumferential side face. The first end face and the second end face are arranged opposite each other along their own axial direction. The circumferential side face is located between the first end face and the second end face. The circumferential side face is always sealed and fitted with the valve body 100 (for example, by sealing and fitting with a smooth surface). The second end face is the end face facing the third opening 130. The plunger 200 can move linearly along its own axial direction under the drive of external force and switch between the first state and the second state.

[0067] Understandably, the circumferential side of the plunger 200 is always in contact with the sidewall of the first chamber 150 to maintain a sealed fit. The first channel 311 or the first opening 110, and the second channel 321 or the second opening 120 can be sealed by contacting the circumferential side of the plunger 200. When the plunger 200 moves along its own axial direction and causes the circumferential side of the plunger 200 to separate from the corresponding positions of the first channel 311 or the first opening 110, and the second channel 321 or the second opening 120, the first channel 311 or the first opening 110... The second channel 321 or the second opening 120 can be connected to the first chamber 150, respectively, so that the fluid medium can flow into the first chamber 150 from the first channel 311 and flow out through the second channel 321, and vice versa; conversely, when one of the first channel 311 or the first opening 110, or the second channel 321 or the second opening 120 is sealed by the circumferential side of the plunger 200, the fluid cannot flow between the first channel 311 and the second channel 321.

[0068] Specifically, the plunger 200 can move along its own axis in the first chamber 150 to the first position and the second position under the external force provided by the drive mechanism. When the plunger 200 is in the first position, the plunger 200 has a first state; and when the plunger 200 is in the second position, the plunger 200 has a second state.

[0069] Specifically, in the axial direction of the plunger 200, the second channel 321 or the second opening 120 is located between the first channel 311 or the first opening 110 and the third opening 130; when the plunger 200 is in the first working position, such as Figure 3 As shown, the plunger 200 is located on the side of the first channel 311 or the first opening 110 away from the second channel 321 or the second opening 120. The first channel 311 or the first opening 110 and the second channel 321 or the second opening 120 are connected to the first chamber 150. When the plunger 200 is in the second position, as... Figure 2 As shown, at least one of the first channel and the second channel is sealed by the circumferential side of the plunger.

[0070] In this embodiment, the ultra-high pressure sealed valve also includes a drive mechanism (not shown in the figure). The drive mechanism is connected to the plunger 200 and is used to provide external force to drive the plunger 200. Specifically, the drive mechanism includes a drive shaft that extends from the fourth opening 140 into the first chamber 150 and is fixedly connected to the plunger 200. The drive shaft and the valve body 100 are always in a moving sealed state. More specifically, the drive mechanism is a cylinder, and the drive shaft is a piston rod.

[0071] Example 2

[0072] The structure of the ultra-high pressure sealing valve in this embodiment is basically the same as that in Embodiment 1, except that:

[0073] In this embodiment, the circumferential side of the plunger 200 is not flat. The plunger 200 can rotate around a selected axis under the drive of an external force and switch between the first state and the second state, thereby realizing the opening and closing of the flow channel 1000. Accordingly, in this embodiment, the driving mechanism is a rotary driving mechanism, such as a rotary motor, and the transmission shaft is a rotary shaft.

[0074] Specifically, the plunger 200 has a first groove structure and a second groove structure on its circumferential side surface. The first groove structure and the second groove structure are spaced apart along the circumference of the plunger 200 and both communicate with the end face of the plunger 200. The circumferential side surface is in sealing fit with the valve body 100. The plunger 200 can rotate around a selected axis under external force and switch between the first state and the second state. When the plunger 200 is in the first state, the first channel 311 or the first opening 110 is connected to the first groove structure. The plunger 200 is connected to the first chamber 150 via the first groove structure. The second channel 321 or the second opening 120 is connected to the first chamber 150 via the second groove structure. There is a gap between the second end face of the plunger 200 and the inner wall of the first chamber 150. When the plunger 200 is in the second state, at least one of the first channel 311 or the first opening 110, the second channel 321 or the second opening 120 is in contact with and sealed to the circumferential side of the plunger 200.

[0075] Example 3

[0076] Please see Figure 4 and Figure 6 The structure of the ultra-high pressure sealing valve in this embodiment is basically the same as that in Embodiment 1 or Embodiment 2. Figure 4 This paper illustrates an ultra-high pressure sealed valve in which the plunger is in the first position and the flow guiding channel within the valve is in a conductive state, with the difference being:

[0077] The ultra-high pressure sealing valve in this embodiment also includes a first sealing mechanism 410 and a second sealing mechanism 420. The first sealing mechanism 410 and the second sealing mechanism 420 are disposed within the first chamber 150. The first sealing mechanism 410 and the second sealing mechanism 420 are respectively disposed on both sides of the first channel 311 / first opening 110 along the axial direction of the plunger 200. The first sealing mechanism 410 and the second sealing mechanism 420 are located between the plunger 200 and the inner wall of the first chamber 150, and simultaneously seal with the plunger 200 and the valve body 100. A second chamber 151 is formed by the plunger 200 and the inner walls of the first sealing mechanism 410, the second sealing mechanism 420, and the first chamber 150. A third chamber 152 is also formed by the plunger 200 and the inner walls of the second sealing mechanism 420 and the first chamber 150. When the plunger 200 is in the first state, the second chamber 151 and the third chamber 150 are in communication with the first chamber 150. When the plunger 200 is in the second state, one of the second chamber 151 and the third chamber 152 is separated from the first chamber by the plunger.

[0078] In this embodiment, the first sealing mechanism 410 and the second sealing mechanism 420 are annular components, and the plunger 200 is sleeved inside the first sealing mechanism 410 and the second sealing mechanism 420. More specifically, the first sealing mechanism 410 and the second sealing mechanism 420 are flexible components that can undergo recoverable deformation when compressed. The first sealing mechanism 410 and the second sealing mechanism 420 located between the plunger 200 and the valve body 100 are always in a state of elastic compression, and the first sealing mechanism 410 and the second sealing mechanism 420 always maintain sealed contact with the plunger 200 and the valve body 100. The first sealing mechanism 410 and the second sealing mechanism 420 can not only achieve the sealing between the plunger 200 and the valve body 100, but also play a role in positioning and guiding the plunger 200.

[0079] In this embodiment, the positions of the first sealing mechanism 410 and the second sealing mechanism 420 within the first chamber 150 are fixed. The fixed positions of the first sealing mechanism 410 and the second sealing mechanism 420 within the first chamber 150 can be achieved by means / structures known to those skilled in the art. For example, a limiting groove can be provided on the inner wall of the first chamber 150, and the first sealing mechanism 410 and the second sealing mechanism 420 are respectively disposed in a limiting groove. It should be noted that the first sealing mechanism 410 and the second sealing mechanism 420 mainly seal with the plunger 200 and the valve body 100 in the radial direction to achieve sealing between them. Therefore, the circumferential areas of the first sealing mechanism 410 and the second sealing mechanism 420 are exposed and in contact with the plunger 200 and the valve body 100.

[0080] In this embodiment, both the first sealing mechanism 410 and the second sealing mechanism 420 are coaxially arranged with the plunger 200. The inner diameters of the first sealing mechanism 410 and the second sealing mechanism 420 are both less than or equal to the outer diameter of the plunger 200, and the outer diameters of the first sealing mechanism 410 and the second sealing mechanism 420 are both greater than or equal to the inner diameter of the first chamber 150. In this way, while ensuring the sealing effect of the first sealing mechanism 410 and the second sealing mechanism 420 on the plunger 200 and the valve body 100, the positioning and guiding role of the first sealing mechanism 410 and the second sealing mechanism 420 on the plunger 200 can also be improved. In addition, during the movement of the plunger 200, the second chamber 151 and the third chamber 152 can be guaranteed to always be sealed. It can be understood that the second chamber 151 and the third chamber 152 are part of the first chamber 150.

[0081] For example, the first sealing mechanism 410 and the second sealing mechanism 420 can be rubber sealing rings or the like with the same structure.

[0082] It should be noted that the high-pressure fluid medium entering the second chamber 151 and the third chamber 152 from the outside will fill the second chamber 151 and the third chamber 152, thereby exerting axial pressure on the first sealing mechanism 410 and the second sealing mechanism 420. After being subjected to axial pressure, the first sealing mechanism 410 and the second sealing mechanism 420 will undergo radial extrusion deformation, thereby making the first sealing mechanism 410 and the second sealing mechanism 420 tightly seal against the inner wall of the valve body 100 and the plunger 200.

[0083] Example 4

[0084] Please see Figure 5 and Figure 6 The structure of the ultra-high pressure sealing valve in this embodiment is basically the same as that in Embodiment 1 or Embodiment 2. Figure 5 This paper illustrates an ultra-high pressure sealed valve in which the plunger is in the first position and the flow guiding channel within the valve is in a conductive state, with the difference being:

[0085] The ultra-high pressure sealing valve also includes a first flow ring 510 and a second flow ring 520. The first flow ring 510 is disposed between the first sealing mechanism 410 and the second sealing mechanism 420, and the second flow ring 520 is disposed between the second sealing mechanism 420 and the bottom of the first chamber 150. That is, the first flow ring 510 is disposed in the second chamber 151, and the second flow ring 520 is disposed in the third chamber 152. The first flow ring 510 and the second flow ring 520 mainly divert and depressurize the fluid medium input from the first channel 311 to prevent the high-pressure fluid medium entering the first chamber 150 from the first channel 311 from causing impact damage to the components located in the first chamber 150. Specifically, the structures of the first flow ring 510 and the second flow ring 520 can be the same. The following explanation and description will take one of them as an example.

[0086] In this embodiment, the first flow ring 510 has a clearance hole formed by its own inner ring surface. A portion of the plunger 200 is disposed in the clearance hole, and the plunger 200 can pass through the clearance hole. The first flow ring 510 and the plunger 200 are in clearance fit. In addition, the first flow ring 510 is provided with one or more guide holes that penetrate radially along itself. The sum of the radial cross-sectional areas of all the guide holes is greater than or equal to the radial cross-sectional area of ​​the guide channel (i.e., the radial cross-sectional area of ​​the first chamber).

[0087] In this embodiment, a plurality of guide holes on the first flow ring 510 are arranged sequentially at intervals along the circumference of the first flow ring 510. Specifically, a guide groove is also provided on the circumferential side of the first flow ring 510, and the guide holes are located at the bottom of the guide groove. It can be understood that the guide groove can be formed by recessing inward from the rotating surface of the first flow ring 510 along its own radial direction. Specifically, the guide groove is an annular groove continuously arranged along the circumference of the flow ring.

[0088] It should be noted that the pressure provided by the fluid medium input from the second adapter after entering the second flow ring is less than the pressure of the drive mechanism pushing the plunger downward, so that the drive mechanism can smoothly push the plunger downward to close the pipeline. After the plunger is sealed, the pressure generated by the remaining fluid medium in the first flow ring is less than the tightening force of the top cover screw (this is the case where the valve body is not a single piece, but is fixed by two parts connected by screws).

[0089] The ultra-high pressure sealing valve provided by this invention uses two hollow adapters to achieve a fluid passage. The hollow adapters facilitate the disassembly and maintenance of the plunger, making the inspection and maintenance of the ultra-high pressure sealing valve simpler. Furthermore, the ultra-high pressure sealing valve provided by this invention uses two hollow adapters. When the plunger is in a specified state, a flow channel for fluid medium to flow is formed between the first adapter and the second adapter through the gap between the plunger and the first chamber. This results in better sealing performance and avoids the problem of blockage by solid particles in the solution.

[0090] It should be understood that the above embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An ultra-high pressure sealing valve, characterized in that, include: The valve body has a first chamber inside and a first opening and a second opening on its outer surface, the first opening and the second opening being in communication with the first chamber; A first adapter is disposed on the valve body and is sealed to fit with the first opening. The first adapter has a first channel inside, and the first channel is in communication with the first chamber. The second adapter is disposed on the valve body and is sealed to the second opening. The second adapter has a second channel inside, which is in communication with the first chamber. A plunger is disposed in the first chamber. A first groove structure and a second groove structure are provided on the circumferential side of the plunger. The first groove structure and the second groove structure are spaced apart along the circumference of the plunger and both communicate with the end face of the plunger. The circumferential side of the plunger is always in sealing fit with the valve body. The plunger can rotate around its own axis under the drive of external force and switch between the first state and the second state. When the plunger is in the first state, the first channel corresponds to the first groove structure and is connected to the first chamber through the first groove structure. The second channel corresponds to the second groove structure and is connected to the first chamber through the second groove structure. The end face of the plunger is in clearance fit with the inner wall of the first chamber. A mutually communicating gap is formed between the plunger and the first channel, the second channel, and the inner wall of the first chamber. The first channel is connected to the second channel through the first chamber, forming a flow channel through which the fluid medium can pass. When the plunger is in the second state, at least one of the first channel and the second channel is sealed against the circumferential side of the plunger. The first channel and / or the second channel are blocked by the plunger, and the flow channel is blocked.

2. The ultra-high pressure sealing valve according to claim 1, characterized in that, Also includes: A first sealing mechanism and a second sealing mechanism are disposed in the first chamber. The first sealing mechanism and the second sealing mechanism are respectively disposed on both sides of the first channel along the axial direction of the plunger. The first sealing mechanism and the second sealing mechanism are located between the plunger and the inner wall of the first chamber, and simultaneously seal with the plunger and the valve body.

3. The ultra-high pressure sealing valve according to claim 2, characterized in that: The plunger, together with the first sealing mechanism, the second sealing mechanism, and the inner wall of the first chamber, forms a second chamber. When the plunger is in the first state, the first channel is connected to the second chamber, and the second chamber is a part of the first chamber.

4. The ultra-high pressure sealing valve according to claim 3, characterized in that: A third chamber is formed by the plunger, the second sealing mechanism, and the inner wall of the first chamber; when the plunger is in the first state and / or the second state, the second channel communicates with the third chamber, and the third chamber is a part of the first chamber.

5. The ultra-high pressure sealing valve according to claim 3, characterized in that: The first sealing mechanism and the second sealing mechanism are annular components, and the plunger is sleeved inside the first sealing mechanism and the second sealing mechanism.

6. The ultra-high pressure sealing valve according to claim 5, characterized in that: The first sealing mechanism and the second sealing mechanism are flexible components capable of undergoing recoverable deformation when compressed.

7. The ultra-high pressure sealing valve according to claim 6, characterized in that: The first sealing mechanism and the second sealing mechanism located between the plunger and the valve body are always in a state of elastic compression, and the first sealing mechanism and the second sealing mechanism always maintain a sealing contact with the plunger and the valve body.

8. The ultra-high pressure sealing valve according to claim 5, characterized in that: The inner diameters of both the first sealing mechanism and the second sealing mechanism are less than or equal to the outer diameter of the plunger.

9. The ultra-high pressure sealing valve according to claim 8, characterized in that: The outer diameters of both the first sealing mechanism and the second sealing mechanism are greater than or equal to the inner diameter of the first chamber.

10. The ultra-high pressure sealing valve according to claim 5, characterized in that: The positions of the first sealing mechanism and the second sealing mechanism within the first chamber are fixed.

11. The ultra-high pressure sealing valve according to claim 5, characterized in that: Both the first sealing mechanism and the second sealing mechanism are coaxially arranged with the plunger.

12. The ultra-high pressure sealing valve according to claim 2, characterized in that, Also includes: A flow ring is disposed between the first sealing mechanism and the second sealing mechanism and / or between the second sealing mechanism and the bottom of the first chamber. The flow ring has a clearance hole formed by its own inner ring surface. A portion of the plunger is disposed within the clearance hole, and the plunger can pass through the clearance hole. The flow ring and the plunger are in clearance fit. The flow ring is provided with at least one guide hole that penetrates its own radial direction. The sum of the radial cross-sectional areas of all the guide holes is greater than or equal to the radial cross-sectional area of ​​the guide channel.

13. The ultra-high pressure sealing valve according to claim 12, characterized in that: The flow ring is provided with multiple flow guide holes, which are arranged at intervals along the circumference of the flow ring.

14. The ultra-high pressure sealing valve according to claim 13, characterized in that: The circumferential side of the flow ring is also provided with a flow guide groove, and the flow guide hole is located at the bottom of the flow guide groove.

15. The ultra-high pressure sealing valve according to claim 14, characterized in that: The flow guide groove is an annular groove continuously arranged along the circumference of the flow ring.

16. The ultra-high pressure sealing valve according to claim 2, characterized in that: In the axial direction of the first chamber, the first opening and the second opening are located on different radial sections.

17. The ultra-high pressure sealing valve according to claim 16, characterized in that: The first adapter and the second adapter are sealed together with the valve body.

18. The ultra-high pressure sealing valve according to claim 1 or 16, characterized in that, It also includes a drive mechanism that is connected to the plunger drive and is used to provide the external force that drives the plunger to move.

19. The ultra-high pressure sealing valve according to claim 18, characterized in that: The drive mechanism includes a drive shaft, and the valve body also has a fourth opening that communicates with the first chamber. The drive shaft extends into the first chamber through the fourth opening and is fixedly connected to the plunger, wherein the drive shaft and the valve body are always in a motion-sealed state.

20. The ultra-high pressure sealing valve according to claim 19, characterized in that: The drive mechanism includes a linear drive mechanism or a rotary drive mechanism, the linear drive mechanism includes a cylinder, and the drive shaft includes a piston rod.

21. The ultra-high pressure sealing valve according to claim 19, characterized in that: The ultra-high pressure sealing valve further includes a third adapter, and the valve body is also provided with a third opening, the third opening being in communication with the first chamber, the third adapter being disposed on the valve body and sealingly cooperating with the third opening, and when the third adapter is separated from the valve body, the plunger can be discharged from the third opening.

22. The ultra-high pressure sealing valve according to claim 21, characterized in that: The third opening is located on the axial extension line of the first chamber.

23. The ultra-high pressure sealing valve according to claim 21, characterized in that: The third opening is coaxially arranged with the first chamber.

24. The ultra-high pressure sealing valve according to claim 21, characterized in that: The fourth opening is positioned opposite the third opening along the axial direction of the first chamber.

25. The ultra-high pressure sealing valve according to claim 21, characterized in that: The fourth opening, the first chamber, and the third opening are arranged coaxially.

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