CN118705389B - High-temperature high-pressure regulating valve with self-adaptive labyrinth flow passage structure - Google Patents
High-temperature high-pressure regulating valve with self-adaptive labyrinth flow passage structure Download PDFInfo
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- CN118705389B CN118705389B CN202411180696.0A CN202411180696A CN118705389B CN 118705389 B CN118705389 B CN 118705389B CN 202411180696 A CN202411180696 A CN 202411180696A CN 118705389 B CN118705389 B CN 118705389B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 41
- 230000003044 adaptive effect Effects 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 abstract description 28
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a high-temperature high-pressure regulating valve with a self-adaptive labyrinth flow passage structure, which relates to the technical field of regulating valves, and is characterized in that a labyrinth sleeve formed by a plurality of labyrinth layers is optimized and improved on the basis of a regulating valve with a conventional labyrinth structure, on one hand, the flow mode of medium fluid is actively changed by utilizing a medium flow groove in the labyrinth sleeve, the flow speed of the fluid is controlled to reduce cavitation caused by the liquid medium, and the running noise is reduced, on the other hand, the running process of the labyrinth sleeve and a valve block is synchronously carried out, and the labyrinth sleeve freely fluctuates according to the opening degree of the valve block.
Description
Technical Field
The invention relates to the technical field of regulating valves, in particular to a high-temperature high-pressure regulating valve with a self-adaptive labyrinth flow passage structure.
Background
For the regulating valve applied to high-temperature/high-pressure fluid or high-pressure differential fluid, under the conditions of high temperature and high pressure, the fluid flow velocity is higher, so that scouring corrosion is easily caused inside a throttling part of the regulating valve, and cavitation, noise, vibration and the like can also occur, so that certain potential safety hazards are brought.
The prior high-pressure regulating valve is classified into a multi-stage high-pressure regulating valve, a labyrinth high-pressure regulating valve, a single-seat sleeve load type high-pressure regulating valve and the like according to valve internal parts, but the prior high-pressure regulating valve cannot effectively avoid the phenomenon of cavitation erosion and erosion simultaneously, and has the problem of short service life, and the main reasons are that the cavitation erosion is a main contradiction when the valve is operated at a small opening degree, and the cavitation is a main contradiction when the valve is opened at a large opening degree.
For which the application proposes a solution.
Disclosure of Invention
The invention aims to provide a high-temperature high-pressure regulating valve with a self-adaptive labyrinth flow passage structure, which aims at the phenomenon that the internal elements of the regulating valve cannot simultaneously avoid cavitation and erosion in the process of high-speed fluid flow aiming at the current regulating valve for high-temperature/high-pressure or high-pressure difference fluid.
The high-temperature high-pressure regulating valve with the self-adaptive labyrinth flow passage structure comprises a valve body, a driving assembly and a central flow passage arranged in the valve body, wherein a labyrinth sleeve is arranged in the valve body at the inner position corresponding to the middle section position of the central flow passage, a valve rod is arranged at the output end position of the driving assembly, the valve rod penetrates into the valve body, a valve block is arranged at the tail end position of the valve rod, and the valve block is arranged in the inner position of the labyrinth sleeve;
the labyrinth sleeve consists of an upper cooperative sleeve piece, a labyrinth lamellar piece and a lower fixed sleeve piece, wherein the upper cooperative sleeve piece and the lower fixed sleeve piece are sequentially arranged along the direction from top to bottom, the labyrinth lamellar piece is positioned at the middle position of the upper cooperative sleeve piece and the lower fixed sleeve piece and is arranged at a linear equidistant distance along the vertical direction, medium launders are arranged on the surface positions of the upper side and the lower side of the labyrinth lamellar piece, and the medium launders are arranged in an annular array along the center point position of the labyrinth sleeve.
It is further provided that the inner diameter of the labyrinth sleeve is equal to the outer diameter of the valve block.
The lower fixed sleeve piece is fixedly connected with the valve body at a position corresponding to the central flow passage, and is provided with a vertically arranged directional sliding rod which sequentially penetrates through the labyrinth layer sheet and the upper cooperative sleeve piece.
The device is further characterized in that the orientation slide bar is in sliding connection with the labyrinth layer sheet and the upper cooperation sleeve sheet, and a connecting spring is arranged at an outer position of the orientation slide bar, which corresponds to the middle of the labyrinth layer sheet and the upper cooperation sleeve sheet at the upper position.
The valve rod is further provided with a cooperative sleeve plate at a position corresponding to the upper side of the labyrinth sleeve, and a plurality of struts corresponding to the upper cooperative sleeve plate are arranged on the surface of the lower side of the cooperative sleeve plate.
The labyrinth lamellar structure is characterized in that the medium flow grooves which are mutually attached in the labyrinth lamellar structure between two adjacent positions form a medium flow passage, and the medium flow grooves are in a multidirectional right-angle bending state along the diameter direction of the labyrinth lamellar structure.
The medium flow passage is further arranged at one end of the medium flow passage, which corresponds to the labyrinth sleeve and is close to the inner curved surface of the valve block, and the medium flow passage is arranged as a front valve inlet or a rear valve outlet.
The medium runner is further provided with the following three setting states through the medium launder:
The first state is that the groove surface of the medium flow groove is kept in a horizontal state with the horizontal plane;
the second state is that the cross section of the medium launder positioned on the upper surface of the labyrinth layer sheet is in an upward bending arched state, and the cross section of the medium launder positioned on the lower surface of the labyrinth layer sheet is in a downward bending arched state;
And in the third state, the groove surface of the medium flow groove is in an upward or downward inclined arrangement state along the diameter direction of the labyrinth lamellar.
The invention has the following beneficial effects:
1. The labyrinth regulating valve is characterized in that the structure of a conventional labyrinth regulating valve is improved, labyrinth layers in the labyrinth regulating valve are improved and optimized on the basis of a labyrinth sleeve, when a medium flows in a valve body, the medium is cut into a plurality of parallel trickles by a medium launder, the parallel trickles form repeated right-angle turns, a plurality of labyrinth layers with flow channels are overlapped to form the sleeve, the flow rate of fluid flowing through a valve internal part is prepared by changing the internal structure of the labyrinth sleeve, the cavitation of liquid is reduced, the gas noise is reduced, the service life of the regulating valve can be effectively prolonged, and the service performance of the regulating valve can be ensured;
2. The labyrinth sleeve is based on the above technical content, wherein the labyrinth layers can have small-amplitude motion capability compared with the conventional structure, the motion capability of each labyrinth layer is directly related to the opening degree of the valve block and the pressure of the medium, and the labyrinth sleeve is essentially characterized in that the pressure of the medium is directly influenced by high-pressure medium to a plurality of labyrinth layers, so that the labyrinth layers can freely adjust gaps in a small range, the influence of medium erosion on a valve body is reduced through two forms of active decompression and passive motion on the basis of not influencing the flow of the medium, the shape of the groove surface of each medium groove is further improved and optimized, and the labyrinth sleeve can be better suitable for high-pressure fluid.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a high-temperature and high-pressure regulating valve with an adaptive labyrinth flow passage structure according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 of a high temperature and high pressure regulator valve with an adaptive labyrinth flow path structure in accordance with the present invention;
FIG. 3 is a cut-away view of FIG. 1 of a high temperature and high pressure regulator valve with an adaptive labyrinth flow path structure in accordance with the present invention;
FIG. 4 is a split view of a labyrinth sleeve assembly in a high temperature and high pressure regulator valve with an adaptive labyrinth flow path structure according to the present invention;
FIG. 5 is a schematic view of the labyrinth sleeve in the high temperature and high pressure regulator valve with the adaptive labyrinth flow path structure according to the present invention;
FIG. 6 is a schematic diagram of a labyrinth layer in a high-temperature high-pressure regulating valve with an adaptive labyrinth flow channel structure according to the present invention;
FIG. 7 is a top view of FIG. 6 of a high temperature and pressure regulator valve with an adaptive labyrinth flow path structure according to the present invention;
FIG. 8 is a partial cutaway view of FIG. 6 of a high temperature, high pressure regulator valve with an adaptive labyrinth flow path structure in accordance with the present invention;
fig. 9 is a partial cross-sectional view of fig. 6 in a high temperature and high pressure regulator valve with an adaptive labyrinth flow path structure according to the present invention.
In the figure, 1, a valve body; 2, a driving assembly, 3, a central runner, 4, a cooperating sleeve plate, 5, a valve rod, 6, a valve block, 7, a labyrinth sleeve, 701, an upper cooperating sleeve piece, 702, a labyrinth layer piece, 703, a lower fixed sleeve piece, 704, a directional sliding rod, 705, a connecting spring, 8 and a medium launder.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
The prior high-pressure regulating valves are classified into a multi-stage high-pressure regulating valve, a labyrinth high-pressure regulating valve, a single-seat sleeve load type high-pressure regulating valve and the like according to valve internal parts. However, the current high-pressure regulating valve cannot effectively avoid cavitation and high-speed high erosion, and has the problem of short service life, and the main reason is that the erosion is a main contradiction when working at a small opening degree, and the cavitation is a main contradiction when working at a large opening degree. The problem that can solve at present relates to the internal structure problem of governing valve, and this is the key, has proposed following technical scheme to this:
Referring to fig. 1 to 9, the high temperature and high pressure regulating valve with the self-adaptive labyrinth flow passage structure in the embodiment comprises a valve body 1, a driving assembly 2 and a central flow passage 3 arranged in the valve body 1, wherein a labyrinth sleeve 7 is arranged in an inner position of the valve body 1 corresponding to a middle section position of the central flow passage 3, a valve rod 5 is arranged at an output end position of the driving assembly 2, the valve rod 5 penetrates into the valve body 1, a valve block 6 is arranged at an end position of the valve rod 5, and the valve block 6 is arranged in an inner position of the labyrinth sleeve 7;
The labyrinth sleeve 7 is composed of an upper cooperating sleeve piece 701, a labyrinth layer piece 702 and a lower fixed sleeve piece 703, the upper cooperating sleeve piece 701 and the lower fixed sleeve piece 703 are sequentially arranged along the direction from top to bottom, the labyrinth layer piece 702 is positioned at the middle position of the upper cooperating sleeve piece 701 and the lower fixed sleeve piece 703 and is linearly equidistant along the vertical direction, medium flow grooves 8 are formed in the positions of the surfaces of the upper side and the lower side of the labyrinth layer piece 702, the medium flow grooves 8 are arranged in an annular array along the center point position of the labyrinth sleeve 7, the inner diameter of the labyrinth sleeve 7 is equal to the outer diameter of the valve block 6, medium flow grooves 8 mutually attached in the labyrinth layer piece 702 between two adjacent positions form a medium flow passage, and the medium flow grooves 8 are in a multidirectional right-angle bending state along the diameter direction of the labyrinth layer piece 702.
The basic principle is that the whole structure operation process is consistent with the conventional regulating valve principle, the valve block 6 is driven to move up and down by the driving component 2, the valve block 6 corresponds to the labyrinth sleeve 7, so that the opening degree of the central flow channel 3 corresponding to the labyrinth sleeve 7 is changed by the valve block 6, and the explanation is combined with fig. 4 and 5, when the valve block 6 is positioned in the lowest end position of the labyrinth sleeve 7, the central flow channel 3 is in a closed state, and when the valve block 6 moves up, the medium flow groove 8 in one or more labyrinth layers 702 is opened;
In this process, referring to fig. 6 and 7, when a medium flows through the medium launder 8, the medium is subject to the structural shape of the medium launder 8, because there is a structure of a plurality of right-angle bends in the medium launder 8, the medium is divided into a plurality of parallel thin flows, the parallel thin flows form repeated right-angle bends, a plurality of labyrinth plies 702 with the flow paths are overlapped to form a labyrinth sleeve 7, the flow rate of the medium flowing through the valve internal part is restricted by changing the internal structure of the labyrinth sleeve 7, the cavitation of the liquid is reduced, the cavitation is generated, the gas noise is reduced, the service life of the regulating valve can be effectively prolonged, and the service performance of the regulating valve can be ensured.
Embodiment two:
The improvement of the overall structure of the labyrinth sleeve in the first embodiment is described in this embodiment:
The lower fixed sleeve 703 is fixedly connected with the valve body 1 at a position corresponding to the central flow channel 3, the lower fixed sleeve 703 is provided with a vertically arranged directional sliding rod 704, the directional sliding rod 704 sequentially penetrates through the labyrinth layer sheet 702 and the upper cooperative sleeve 701 upwards, the directional sliding rod 704 is in sliding connection with the labyrinth layer sheet 702 and the upper cooperative sleeve sheet 701, a connecting spring 705 is arranged at an outer position between the labyrinth layer sheet 702 corresponding to the upper layer position of the directional sliding rod 704 and the upper cooperative sleeve sheet 701, the valve rod 5 is provided with a cooperative sleeve plate 4 corresponding to the upper side of the labyrinth sleeve 7, and a plurality of struts corresponding to the upper cooperative sleeve sheet 701 are arranged on the surface position of the lower side of the cooperative sleeve plate 4.
The scheme is explained by referring to fig. 2, in the initial state, the valve block 6 is driven by the driving assembly 2 to move downwards so that the whole labyrinth sleeve 7 is in a fully blocked state, and the scheme is that the cooperating sleeve plate 4 and the valve rod 5 are in a synchronous operation state, so that the cooperating sleeve plate 4 drives the upper cooperating sleeve plate 701 to move downwards, and each connecting spring 705 is in a compressed state, so that each labyrinth layer 702 is fully pressed close, whereas in the state that the valve block 6 moves upwards to open the central flow channel 3, because the connecting spring 705 is in a released state, each labyrinth layer 702 is not in a fully pressed close state, the essential is that the labyrinth layer 702 in a corresponding position is in a state of being moved upwards by the self pressure of a medium, and the distance between the labyrinth layer 702 in each two adjacent positions is fluctuated, so that the volume of the medium flow channel is changed.
Embodiment III:
The present embodiment is a supplementary description of the first embodiment and the second embodiment, and specifically, is directed to a medium launder therein:
the medium flow passage is arranged as a front valve inlet or a rear valve outlet at one end position of the labyrinth sleeve 7, which is close to the inner curved surface position of the valve block 6, and is provided with the following three setting states through the medium flow groove 8:
the first state is that the groove surface of the medium flow groove 8 is kept in a horizontal state with the horizontal plane;
the second state is that the cross section of the medium launder 8 positioned on the upper surface of the labyrinth layer 702 is in an upward bending arched state, and the cross section of the medium launder 8 positioned on the lower surface of the labyrinth layer 702 is in a downward bending arched state;
state three, the groove surface of the medium flow groove 8 is inclined upward or downward along the diameter direction of the labyrinth layer 702.
The following description is made in connection with the first embodiment and the second embodiment:
S1, numbering each labyrinth ply 702 as i in sequence along the direction from bottom to top, when the overall regulating valve is in a state of small opening, for example, the medium launder 8 in the labyrinth ply 702 with 5 or less than 5 is in an open state, otherwise, when the overall regulating valve is in a state of large opening, the medium launder 8 in the labyrinth ply 702 with more than 5 is in an open state;
S2, when the thickness of the labyrinth piece 702 is L, after the valve block 6 moves up by i×l, it may indicate that the labyrinth pieces 702 may freely move in the height range of i×l, but it should be noted that no matter how the labyrinth piece 702 freely moves, only the medium launder 8 in the i lower labyrinth pieces 702 in the overall labyrinth sleeve 7 is in an opened state, and the labyrinth pieces 702 at the upper side are still in a blocked state;
the key purpose of the device is mainly used for high-pressure medium fluid, i labyrinth lamellar 702 at the lower position is driven by the high pressure of the fluid to move upwards, and in theory, i labyrinth lamellar 702 are pushed upwards, so that the fact that the distance between the numbered 1 labyrinth lamellar 702 and the lower fixed sleeve piece 703 is the largest can be understood that the i labyrinth lamellar 702 can freely move in the vertical direction through the groove surface structure of the medium groove 8 on the one hand under the elastic action of the connecting spring 705 and the maximum volume of the medium groove can be changed;
S3, combining the S1 and the S2, wherein in the conventional state, the groove surface of the medium flow groove 8 can be kept in a horizontal state, so that the medium can be only divided into a plurality of thin flows when flowing through the medium flow channel, and the part corresponds to the first state;
However, considering the free movement process of the labyrinth piece 702 along the vertical direction, the groove surface of the medium flow groove 8 can be improved into a second state and a third state, wherein the essence in the second state is that the groove surface cross section of the medium flow groove 8 positioned at the upper surface position of the labyrinth piece 702 is in an upward bending arched state, and the groove surface cross section of the medium flow groove 8 positioned at the lower surface position of the labyrinth piece 702 is in a downward bending arched state, so that in a medium flow channel formed when the two labyrinth pieces 702 are completely close, the flow channel caliber of a section part is smaller than that of the flow channels at two end positions, and therefore, the flow velocity is further changed mainly by changing the caliber, and the free movement process of the labyrinth piece 702 is further matched;
For the third state, the essence is to change the caliber of the two ends of the medium runner, in particular to change the inclined direction of the groove surface in the medium runner 8, for example, the caliber of one end of the medium runner close to the valve block 6 is larger, and the caliber of the other end is smaller, so as to match the flow direction of the fluid in the central runner 3, and as can be understood from fig. 2, the fluid can diffuse to the outside through the central position of the labyrinth sleeve 7, and conversely, can diffuse to the central position through the outer position of the labyrinth sleeve 7, and the regulation requirements of different fluids are met;
If the fluid is water or non-compressible liquid and needs to be high in and low out, the fluid is subjected to large-caliber depressurization or deceleration, so that the flushing of the valve core can be reduced;
If the fluid is a compressible liquid such as steam or gas and a low inlet/outlet is required, the purpose is considered that the fluid is a compressible fluid, and the pressure before the valve is larger than the pressure after the valve, so the fluid density before the valve is larger than the fluid density after the valve, although the labyrinth sleeve 7 is an expanding flow passage, the combined effect causes that the flow rate of the fluid entering the labyrinth sleeve 7 is smaller than the flow rate of the fluid after the labyrinth sleeve 7, which is contrary to the incompressible fluid, so the groove surface of the medium flow groove 8 can be further improved in order to reduce the flushing of the valve core.
In combination with the above S3, the design structure of the groove surface of the medium groove 8 needs to be combined with the fluid regulation requirement, specifically includes the above second state and the above third state, and is subject to the fluid self regulation requirement, so the invention is not limited to the groove surface structure of the medium groove 8, and includes only the above first state, the above second state and the above third state.
In summary, on the basis of a regulating valve with a conventional labyrinth structure, a labyrinth sleeve consisting of a plurality of labyrinth layers is obtained by optimizing and improving, on one hand, the flow mode of medium fluid is actively changed by utilizing a medium launder in the labyrinth sleeve, the flow speed of the fluid is controlled, so that the cavitation problem generated by the liquid medium is reduced, and the running noise is reduced, on the other hand, the operation process of the labyrinth sleeve and a valve block is synchronously carried out, and the labyrinth sleeve freely fluctuates according to the opening degree of the valve block.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
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| CN202411180696.0A CN118705389B (en) | 2024-08-27 | 2024-08-27 | High-temperature high-pressure regulating valve with self-adaptive labyrinth flow passage structure |
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| CN202411180696.0A CN118705389B (en) | 2024-08-27 | 2024-08-27 | High-temperature high-pressure regulating valve with self-adaptive labyrinth flow passage structure |
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| CN119373932B (en) * | 2024-12-31 | 2025-03-18 | 杭州富阳良工仪表有限公司 | Control valve with adaptive rectification structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314118A (en) * | 2017-07-06 | 2017-11-03 | 江苏华电仪征热电有限公司 | A kind of novel condensation water recycles regulating valve |
| CN112032399A (en) * | 2020-08-17 | 2020-12-04 | 浙江理工大学 | Metering test and control method for internal pressure reduction flow characteristic of labyrinth disc pressure reducing valve |
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| KR101247056B1 (en) * | 2012-07-11 | 2013-03-25 | 임환정 | Multistage spiral disk stack, highest delta pressure control valve |
| CN206458841U (en) * | 2017-01-24 | 2017-09-01 | 杭州东辰热力辅机有限公司 | A kind of labyrinth disc regulating valve |
| CN113063026B (en) * | 2021-03-15 | 2022-11-22 | 瑞昌市金宇铜业制造有限公司 | Labyrinth type sleeve regulating valve |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314118A (en) * | 2017-07-06 | 2017-11-03 | 江苏华电仪征热电有限公司 | A kind of novel condensation water recycles regulating valve |
| CN112032399A (en) * | 2020-08-17 | 2020-12-04 | 浙江理工大学 | Metering test and control method for internal pressure reduction flow characteristic of labyrinth disc pressure reducing valve |
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