CN114623272B - Three-section type large adjustable ratio control regulating valve - Google Patents
Three-section type large adjustable ratio control regulating valve Download PDFInfo
- Publication number
- CN114623272B CN114623272B CN202210203103.2A CN202210203103A CN114623272B CN 114623272 B CN114623272 B CN 114623272B CN 202210203103 A CN202210203103 A CN 202210203103A CN 114623272 B CN114623272 B CN 114623272B
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- flow
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 210000004907 gland Anatomy 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007363 regulatory process Effects 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Abstract
The invention relates to a three-section type large adjustable ratio control regulating valve which comprises a valve body, a valve cover and a valve seat, wherein one side of the valve body is provided with a liquid inlet cavity, the other side of the valve body is provided with a liquid outlet cavity, the peripheral wall of the valve seat is provided with a regulating window communicated with the liquid inlet cavity, a valve core is arranged in the valve seat, and the valve core comprises a large valve core and a small valve core connected to the bottom of the large valve core; the peripheral wall of the large valve core is provided with flow windows at intervals, and the upper end of the large valve core is provided with a valve rod extending out of the valve cover; the small valve core comprises a connecting disc and a core column, the connecting disc is connected with the bottom of the large valve core, a fan-shaped window is formed in the connecting disc, and the core column is in sliding fit with a liquid inlet hole in the bottom of the valve seat. According to the invention, under the working condition of small flow, the small valve core is driven by the large valve core to realize the accurate adjustment of the small flow, and under the working condition of large flow, the area of the adjusting window on the valve seat is adjusted by moving the large valve core to realize the accurate control of the large flow, so that the high-precision control of the flow under different working conditions is realized.
Description
Technical Field
The invention relates to the technical field of control valves, in particular to a three-section type large adjustable ratio control regulating valve.
Background
In the field of petrochemical engineering control, under different operating conditions such as start-stop and normal operation occurrence accidents, some units require flow control valves, and can meet the accurate control requirements of different flows under different pressure conditions. For example, under normal operation condition, the control valve is required to have larger circulation capacity, under starting condition, the control valve is required to meet the accurate control of small flow, the ratio of the maximum flow to the minimum flow required by the units in the use process is more than 200, the ratio of the maximum controllable flow to the minimum controllable flow of the existing control valve can only reach 100 at the highest, so that the existing control valve cannot meet the accurate control requirement of the devices under different working conditions.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to overcome the defects in the prior art, the invention provides a three-section type large-adjustable-ratio control regulating valve, which is used for realizing high-precision control of flow under different working conditions.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a big adjustable ratio control governing valve of syllogic, has the valve body, fixes the valve gap at the valve body terminal surface and fixes the disk seat in the valve body, and valve body one side has the feed liquor chamber, the opposite side has the play liquid chamber, the disk seat perisporium seted up the regulation window with feed liquor chamber intercommunication, be equipped with the case in the disk seat, the case includes big case and connects the little case in big case bottom.
The periphery of the large valve core is provided with flow windows which can flow out pressure medium to the liquid outlet cavity at intervals, the periphery of the large valve core is in sliding fit with the inner wall of the valve seat, and the upper end of the large valve core is provided with a valve rod which extends out of the valve cover.
The small valve core comprises a connecting disc and a core column, the connecting disc is connected with the bottom of the large valve core, a fan-shaped window is formed in the connecting disc, and the core column is in sliding fit with a liquid inlet hole in the bottom of the valve seat.
In the stroke interval of 0-30% of the valve rod, the pressure medium flow entering the liquid inlet cavity is regulated in the interval by changing the size of the gap between the liquid inlet hole and the core column;
in the range of 30% -50% of the stroke of the valve rod, the pressure medium flow entering the liquid inlet cavity is regulated in the range by shielding the large valve core in the movement process and changing the area of the lower end part of the regulating window;
in the range of 50% -100% of the stroke of the valve rod, the large valve core is used for shielding and changing the whole area of the regulating window in the moving process, so that the pressure medium flow entering the liquid inlet cavity in the range is regulated.
Specifically, the large valve core is of a cage structure, the flow window comprises trapezoid windows and arrow-shaped windows which are distributed on the peripheral wall of the large valve core at intervals, the trapezoid windows are located in the middle of the side wall of the inner cavity of the large valve core, and the arrow-shaped windows extend from the middle of the side wall of the inner cavity of the large valve core to the top of the side wall of the inner cavity of the large valve core.
Preferably, in order to facilitate the connection between the large valve core and the small valve core, the bottom of the large valve core is provided with internal threads, and the periphery of the connecting disc of the small valve core is provided with external threads which are connected with the internal threads in a matching way.
The valve is characterized in that two rectangular ring grooves which are vertically spaced are formed in the lower end face of the outer circle of the large valve core, a metal piston ring is arranged in each rectangular ring groove, and because a gap exists between the outer periphery of the large valve core and the inner wall of the valve seat, part of fluid can influence the adjusting precision of the valve through the gap in the adjusting process, and the gap can be eliminated through the self-expansion force of the metal piston ring, so that the control precision of the valve is improved.
The stem comprises a cylindrical section and a conical section which are integrally structured, the upper end of the cylindrical section is connected with the connecting disc, the lower end of the cylindrical section is connected with the conical section, and a matching section with the diameter of 0.5-1.5 mm is arranged between the lower end of the cylindrical section and the liquid inlet hole when the valve is in a fully closed state.
In order to improve the motion stability of the large valve core, a sleeve is arranged between the valve cover and the upper end surface of the valve seat, and the large valve core moves in the sleeve.
In order to improve the stability of valve rod movement and the tightness of the valve, a guide sleeve is arranged between the lower end of the valve cover and the valve rod, a packing assembly is arranged between the upper end of the valve cover and the valve rod, and a gland for compressing the packing assembly is arranged on the upper end face of the valve cover.
The beneficial effects of the invention are as follows: according to the invention, under the working condition of small flow, the small valve core is driven by the large valve core to realize the accurate adjustment of the small flow, under the working condition of large flow, the area of the adjusting window on the valve seat is adjusted by moving the large valve core to realize the accurate control of the large flow, so that the accurate adjustment and control of the small flow in the small opening state and the accurate control of the large flow of the valve in the large opening state are realized within the full stroke range, and the high-precision control of the flow under different working conditions is realized.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the valve seat according to the present invention.
FIG. 3 is a schematic view of the large valve core according to the present invention.
FIG. 4 is a schematic view of the expanded configuration of the large spool flow window portion of the present invention.
Fig. 5 is a schematic structural view of the small valve core according to the present invention.
Fig. 6 is a schematic top view of fig. 5.
Fig. 7 is a schematic view of the position between the valve core and the valve seat in the fully closed state of the valve of the regulating valve.
Fig. 8 is a schematic view of the position between the valve element and the valve seat in the valve stem stroke range of 0 to 30%.
Fig. 9 is a schematic illustration of the position between the valve core and the valve seat over 30% to 50% of the valve stem travel range.
Fig. 10 is a schematic illustration of the position between the valve core and the valve seat over a range of 50% to 100% of the valve stem travel.
In the figure: 1. valve body, 2, valve cover, 3, valve seat, 4, large valve core, 5, small valve core, 5-1, connecting disk 5-2, core column, 5-3, fan-shaped window, 6, valve rod, 7, sleeve, 8, guide sleeve, 9, packing component, 10, gland, 11, liquid inlet cavity, 12, liquid outlet cavity, 13, regulating window, 13-1, first regulating profile, 13-2, second regulating profile, 14, liquid inlet hole, 15-1, trapezoid window, 15-2, arrow-shaped window and 16, metal piston ring.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The three-section type large adjustable ratio control regulating valve as shown in fig. 1-6 is provided with a valve body 1, a valve cover 2 fixed on the end face of the valve body 1 and a valve seat 3 fixed in the valve body 1, wherein a valve core is arranged in the valve seat 3 and comprises a large valve core 4 and a small valve core 5 connected to the bottom of the large valve core 4, the periphery of the large valve core 4 is in sliding fit with the inner wall of the valve seat 3, and the upper end of the large valve core 4 is provided with a valve rod 6 extending out of the valve cover 2.
A sleeve 7 is arranged between the valve cover 2 and the upper end surface of the valve seat 3, and the large valve core 4 moves in the sleeve 7. The valve cover 2 is characterized in that a guide sleeve 8 is arranged between the lower end of the valve cover 2 and the valve rod 6, a packing assembly 9 is arranged between the upper end of the valve cover 2 and the valve rod 6, and a gland 10 for pressing the packing assembly 9 is arranged on the upper end face of the valve cover 2 so as to improve the movement stability of the valve rod 6 and the sealing performance of the valve.
The valve body 1 is provided with a liquid inlet cavity 11 and a liquid outlet cavity 12, the liquid inlet cavity 11 is positioned at the lower half part of the valve body 1 and is provided with an opening facing the left side of the valve body 1, the liquid outlet cavity 12 is positioned at the upper half part of the valve body 1 and is provided with an opening facing the right side of the valve body 1, a partition plate is arranged between the liquid inlet cavity 11 and the liquid outlet cavity 12, the valve seat 3 is sealed and fixed on the partition plate through a mounting flange at the upper end, an adjusting window 13 communicated with the liquid inlet cavity 11 is formed in the peripheral wall of the valve seat 3, the adjusting window 13 comprises a first adjusting profile 13-1 and a second adjusting profile 13-2, the first adjusting profile 13-1 is positioned below and is in a diffusion shape from bottom to top, and the second adjusting profile 13-2 is positioned above and is in a rectangular shape and is connected with the maximum flaring end of the first adjusting profile 13-1.
The valve seat 3 is designed into a structure with a stepped hole inside, the valve seat hole with larger diameter is in sliding fit with the outer round surface of the large valve core 4, and the valve seat hole with smaller diameter is a liquid inlet hole 14 communicated with the liquid inlet cavity 11.
The large valve core 4 is of a cage structure, flow windows capable of flowing out pressure medium to the liquid outlet cavity 12 are arranged on the peripheral wall of the large valve core 4 at intervals, and the flow windows do not participate in flow regulation; the flow window comprises trapezoid windows 15-1 and arrow-shaped windows 15-2 which are distributed on the peripheral wall of the large valve core 4 at intervals, the bottoms of the trapezoid windows 15-1 and the arrow-shaped windows 15-2 are flush, wherein the trapezoid windows 15-1 are positioned in the middle of the inner cavity side wall of the large valve core 4, and the arrow-shaped windows 15-2 extend from the middle of the inner cavity side wall of the large valve core 4 to the top of the inner cavity side wall of the large valve core 4.
The bottom of the large valve core 4 is provided with internal threads, the lower end face of the outer circle of the large valve core 4 is provided with two rectangular annular grooves which are vertically spaced, a metal piston ring 16 is arranged in each rectangular annular groove, and because a gap exists between the outer periphery of the large valve core 4 and the inner wall of the valve seat 3, part of fluid can influence the adjusting precision of the valve through the gap in the adjusting process, and the gap can be eliminated through the self-expansion force of the metal piston ring 16, so that the control precision of the valve is improved.
The small valve core 5 is of a T-shaped structure and comprises a connecting disc 5-1 and a core column 5-2, and external threads which are connected with the internal threads in a matching manner are arranged on the periphery of the connecting disc 5-1, so that the small valve core 5 is connected with the bottom of the large valve core 4; four sector windows 5-3 uniformly distributed in the circumferential direction are arranged on the connecting disc 5-1, and the core column 5-2 is in sliding fit with the liquid inlet hole 14.
Specifically, stem 5-2 include cylinder section and the cone section of an organic whole structure, cylinder section upper end meets with connection pad 5-2, and cylinder section lower extreme links to each other with the cone section, when valve closed state entirely, have the cooperation section that length is L=1.5mm between cylinder section lower extreme and the feed liquor hole 14, because small case 5 just opens in-process flow area is little, the velocity of flow is fast, sets up the regulation profile that this cooperation section can effectively protect small case 5, guarantees the regulation precision.
As shown in fig. 7, in the fully closed state of the valve of the regulating valve, the sealing surface at the upper end of the large valve core 4 and the sealing surface at the upper end of the valve seat 3 are mutually attached to realize sealing, so that the sealing performance in the fully closed state of the valve is ensured.
In the regulating process, in the stroke range of 0-30% of the valve rod 6, as shown in fig. 8, the pressure medium entering the liquid inlet cavity 11 flows into the inner cavity of the valve seat 3 through the gap between the cone section of the small valve core 5 and the liquid inlet hole 14, then flows out of the upper end of the arrow-shaped window 15-2 on the side wall of the large valve core 4 to the liquid outlet cavity 12 after entering the inner cavity of the large valve core 4 through the fan-shaped window 5-3, and in the stroke range, the small flow in the range is regulated by changing the gap between the liquid inlet hole 14 and the cone section of the core column 5-2, so that the flow of fluid is accurately controlled. In the range of the interval, the regulating window 13 on the peripheral wall of the valve seat 3 is always covered by the outer circular surface of the large valve core 5, fluid cannot enter the inner cavity of the large valve core 5 through the regulating window 13 on the valve seat 3, and meanwhile, the fluid is prevented from entering the inner cavity of the valve seat 3 through a gap between the valve seat 3 and the large valve core 5 under the action of the metal piston ring 16, so that the control accuracy of the regulating valve in the stroke interval is ensured.
In the stroke interval of 30% -50% of the valve rod 6, as shown in fig. 9, along with the movement of the valve core, the small valve core 5 is in a completely opened state, the flow entering from the liquid inlet hole 14 is quantified, at the moment, the flow regulating effect is that the regulating window 13 on the valve seat 3 is used, the flow of the pressure medium entering from the liquid inlet cavity 11 is regulated by shielding and changing the area of the first regulating molded surface 13-1 of the regulating window 13 in the movement process of the large valve core 4, and thus, the regulation and control precision requirements of the flow in the interval are realized.
In the stroke interval of 50% -100% of the valve rod 6, as shown in fig. 10, the first adjusting profile 13-1 of the adjusting window 13 is completely opened at this time, and the flow of the pressure medium entering the liquid inlet cavity 11 is adjusted by shielding and changing the area of the second adjusting profile 13-2 of the adjusting window 13 during the continuous upward movement of the large valve core 4, so that the accurate adjustment of the large flow in the interval is realized.
The traditional sleeve type regulating valve has large circulation capacity, but under the working condition of small flow, the control precision can not meet the requirement; the plunger type regulating valve has high control precision under the working condition of small flow, but can not meet the requirement of the working condition of large flow under the fully-opened state. The invention combines the advantages of two valves with different structures and integrates the advantages, under the working condition of small flow, the small valve core 5 is driven by the large valve core 4 to realize the accurate adjustment of small flow, under the working condition of large flow, the area of the adjusting window 13 on the valve seat 3 is adjusted by the movement of the large valve core 4 to realize the accurate control of large flow, thereby realizing the accurate adjustment and control of small flow in the state of small opening and the accurate control of large flow of the valve in the state of large opening in the full stroke range, and meeting the requirements of realizing the high-precision control of flow under different working conditions.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (7)
1. The utility model provides a big adjustable ratio control governing valve of syllogic, has the valve body, fixes the valve gap at the valve body terminal surface and fixes the disk seat in the valve body, and valve body one side has the feed liquor chamber, the opposite side has out the liquid chamber, characterized by: the valve seat peripheral wall is provided with an adjusting window communicated with the liquid inlet cavity, a valve core is arranged in the valve seat, and the valve core comprises a large valve core and a small valve core connected to the bottom of the large valve core;
the periphery of the large valve core is in sliding fit with the inner wall of the valve seat, and the upper end of the large valve core is provided with a valve rod extending out of the valve cover;
the small valve core comprises a connecting disc and a core column, the connecting disc is connected with the bottom of the large valve core, a fan-shaped window is formed in the connecting disc, and the core column is in sliding fit with a liquid inlet hole at the bottom of the valve seat;
in the stroke interval of 0-30% of the valve rod, the pressure medium flow entering the liquid inlet cavity is regulated in the interval by changing the size of the gap between the liquid inlet hole and the core column;
in the 30% -50% stroke interval of the valve rod, the pressure medium flow entering the liquid inlet cavity in the interval is regulated by shielding the large valve core in the movement process and changing the area of the lower half part of the regulating window;
in the range of 50% -100% of the stroke of the valve rod, the large valve core is used for shielding and changing the whole area of the regulating window in the moving process, so that the pressure medium flow entering the liquid inlet cavity in the range is regulated.
2. The three-stage large adjustable ratio control regulating valve of claim 1, wherein: the large valve core is of a cage structure, the flow window comprises trapezoid windows and arrow-shaped windows which are distributed on the peripheral wall of the large valve core at intervals, the trapezoid windows are located in the middle of the side wall of the inner cavity of the large valve core, and the arrow-shaped windows extend from the middle of the side wall of the inner cavity of the large valve core to the top of the side wall of the inner cavity of the large valve core.
3. The three-stage large adjustable ratio control regulating valve according to claim 2, characterized in that: the bottom of the large valve core is provided with internal threads, and the periphery of the connecting disc of the small valve core is provided with external threads which are connected with the internal threads in a matching way.
4. The three-stage large adjustable ratio control regulating valve according to claim 2, characterized in that: the lower end face of the excircle of the large valve core is provided with two rectangular annular grooves which are vertically spaced, and a metal piston ring is arranged in each rectangular annular groove.
5. The three-stage large adjustable ratio control regulating valve of claim 1, wherein: the stem comprises a cylindrical section and a cone section which are integrally structured, the upper end of the cylindrical section is connected with the connecting disc, the lower end of the cylindrical section is connected with the cone section, and a matching section with the diameter of 0.5-1.5 mm is arranged between the lower end of the cylindrical section and the liquid inlet hole when the valve is in a fully closed state.
6. The three-stage large adjustable ratio control regulating valve of claim 1, wherein: a sleeve is arranged between the valve cover and the upper end surface of the valve seat, and the large valve core is positioned in the sleeve to move.
7. The three-stage large adjustable ratio control regulating valve of claim 1, wherein: the valve cover is characterized in that a guide sleeve is arranged between the lower end of the valve cover and the valve rod, a packing assembly is arranged between the upper end of the valve cover and the valve rod, and a gland for pressing the packing assembly is arranged on the upper end face of the valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203103.2A CN114623272B (en) | 2022-03-02 | 2022-03-02 | Three-section type large adjustable ratio control regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210203103.2A CN114623272B (en) | 2022-03-02 | 2022-03-02 | Three-section type large adjustable ratio control regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114623272A CN114623272A (en) | 2022-06-14 |
| CN114623272B true CN114623272B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210203103.2A Active CN114623272B (en) | 2022-03-02 | 2022-03-02 | Three-section type large adjustable ratio control regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114623272B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089705A (en) * | 1992-10-09 | 1994-07-20 | 日本贝雷株式会社 | High-differential-pressure regulating valve |
| JP2002156050A (en) * | 2000-11-20 | 2002-05-31 | Toyo Keiki Co Ltd | Flow control valve |
| CN211738076U (en) * | 2019-12-27 | 2020-10-23 | 乐山市前沿油气设备制造有限公司 | Electric regulating valve |
| CN212839453U (en) * | 2020-07-30 | 2021-03-30 | 欧文凯利自控阀（上海）有限公司 | High-temperature high-precision regulating valve |
| CN213900007U (en) * | 2020-12-26 | 2021-08-06 | 江苏金亿源电力设备制造有限公司 | High-adjustable-ratio valve with good sealing performance |
| JP2022030466A (en) * | 2020-08-07 | 2022-02-18 | 株式会社鷺宮製作所 | Motor-operated valve and refrigeration cycle system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8157184B2 (en) * | 2008-05-29 | 2012-04-17 | Kabushiki Kaisha Saginomiya Seisakusho | Expansion valve, heat pump type refrigeration cycle apparatus, and air handling unit |
| CN107588204A (en) * | 2016-07-08 | 2018-01-16 | 艾默生过程管理(天津)阀门有限公司 | Cascade controlled fluid control valve and the trim for control valve for fluids |
-
2022
- 2022-03-02 CN CN202210203103.2A patent/CN114623272B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089705A (en) * | 1992-10-09 | 1994-07-20 | 日本贝雷株式会社 | High-differential-pressure regulating valve |
| JP2002156050A (en) * | 2000-11-20 | 2002-05-31 | Toyo Keiki Co Ltd | Flow control valve |
| CN211738076U (en) * | 2019-12-27 | 2020-10-23 | 乐山市前沿油气设备制造有限公司 | Electric regulating valve |
| CN212839453U (en) * | 2020-07-30 | 2021-03-30 | 欧文凯利自控阀（上海）有限公司 | High-temperature high-precision regulating valve |
| JP2022030466A (en) * | 2020-08-07 | 2022-02-18 | 株式会社鷺宮製作所 | Motor-operated valve and refrigeration cycle system |
| CN213900007U (en) * | 2020-12-26 | 2021-08-06 | 江苏金亿源电力设备制造有限公司 | High-adjustable-ratio valve with good sealing performance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114623272A (en) | 2022-06-14 |
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