CN104132154A - Stepless natural gas flow regulating valve - Google Patents
Stepless natural gas flow regulating valve Download PDFInfo
- Publication number
- CN104132154A CN104132154A CN201410358902.2A CN201410358902A CN104132154A CN 104132154 A CN104132154 A CN 104132154A CN 201410358902 A CN201410358902 A CN 201410358902A CN 104132154 A CN104132154 A CN 104132154A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- adjusting
- strip hole
- spool
- cylindrical shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0414—Plug channel at 90 degrees to the inlet
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0407—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0485—Spindle sealing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a stepless natural gas flow regulating valve. The stepless natural gas flow regulating valve comprises a valve body and a valve element; the valve body comprises a gas inlet end, an air outlet end and a partition board; the valve element comprises a cylinder, an adjusting rod, an adjusting body, an adjusting cylinder and a hand wheel; the cylinder is fixed inside a valve element installation hole; the adjusting cylinder is of a cylinder structure with two closed ends; the adjusting cylinder is fixed into a vent hole; the adjusting body is arranged inside the adjusting cylinder; the outer surface of the adjusting body makes contact with the inner surface of the adjusting cylinder; the adjusting rod penetrates through the two ends of the cylinder; the bottom end of the adjusting rod penetrates through the top end of the adjusting cylinder and is connected with the center portion of the adjusting body; a long-strip hole is formed in the adjusting cylinder in the horizontal direction; the adjusting body is provided with a fan cavity of which the center angle is the same as the center angle of the long-strip hole; the fan cavity and the long-strip hole are at the same height; the bottom of the adjusting body is provided with an exhaust hole communicated with the fan cavity. The stepless natural gas flow regulating valve can accurately adjust natural gas flow.
Description
Technical field
The present invention relates to natural gas transport field, relate in particular to the flow step-less adjustment valve for natural gas transport.
Background technique
Existing natural gas flow adjustable valve comprises valve body, and the valve seat moving in valve body, forms sealing, to stop rock gas to pass through when valve seat contacts with the central through bore internal surface in valve body.Valve seat move up and off center through hole after, the fraction area of central through bore exposes, now rock gas can flow through by central through bore, gas discharge is less.Valve seat continues to move up, and the area that exposes of central through bore becomes large size from small size moment, and gas discharge moment becomes large.Therefore, break-make when the existing valve body for natural gas transport can only be realized natural gas transport, cannot realize the adjusting of gas discharge.
In order to realize the accurate control of gas discharge, need a kind of natural gas flow adjustable valve that can carry out to gas discharge fine adjustment.
Summary of the invention
Object of the present invention is to overcome the deficiencies in the prior art, and a kind of stepless flow control valve of rock gas that can realize gas discharge fine adjustment is provided.
Object of the present invention is achieved through the following technical solutions:
The stepless flow control valve of rock gas, comprises valve body and spool, valve body comprises inlet end, outlet side and is connected with valve interior surface and spacer body between inlet end and outlet side, and the vertical section that spacer body comprises horizontal segment, is connected with horizontal segment two ends, offers vent on horizontal segment, the top of valve body offers the spool mounting hole corresponding with vent, spool comprises cylindrical shell, regulating lever, adjust body and adjust cylinder, cylindrical shell is fixed in spool mounting hole, adjusting cylinder is the cylindrical structure of closed at both ends, adjusting cylinder is fixed in vent, tune is wholy set in to be adjusted in cylinder, the outer surface of adjusting body contacts with the internal surface of adjusting cylinder, regulating lever runs through the two ends of cylindrical shell, the top that adjustment cylinder is run through in the bottom of regulating lever is connected with the center portion of adjusting body, adjust cylinder and offer in the horizontal direction strip hole, strip hole is positioned at vent top, the central angle of strip hole is less than 180 °, adjust and offer on the whole the fan-shaped chamber identical with the central angle of strip hole, fan-shaped chamber and strip hole are at sustained height, the bottom of adjusting body offers the exhaust port being communicated with fan-shaped chamber, the bottom of adjusting cylinder offers the hole corresponding with exhaust port, spool also comprises the handwheel being connected with regulating lever top.
The present invention is in the time of work, and the rock gas flowing into from inlet end enters tune fan-shaped chamber on the whole from the strip hole of adjusting cylinder, then enters outlet side by exhaust port.Adjust body by hand wheel rotating, the relative position of fan-shaped chamber and strip hole is changed, when fan-shaped chamber is during completely just to strip hole, in unit time, enter the amount of natural gas maximum in fan-shaped chamber, in the time that the area of overlap of fan-shaped chamber and strip hole diminishes, the amount of natural gas that enters fan-shaped chamber in unit time diminishes, and so can realize the fine adjustment of gas discharge.
Further, described spool also comprises two seal ring A, and seal ring A is arranged at the described internal surface of adjusting cylinder, and seal ring A lays respectively at the above and below of described strip hole.
Seal ring A is set, can prevents that rock gas from being entered and being adjusted after cylinder by strip hole, flow into and adjust cylinder and adjust the gap between body, then flow out by the hole of adjusting cylinder bottom, thereby make the Flow-rate adjustment of rock gas more accurately controlled.
Further, described spool also comprises and is arranged at described strip hole end and extends to the limit body in described fan-shaped chamber.
Limit body is set, and staff is in the process of adjust flux, and modulating valve is in the time of standard-sized sheet or full-shut position, and limit body can stop adjustment body to be rotated further, and makes staff obtain clear and definite feedback, has improved convenience of use.
Further, described spool also comprises the elastic ring being connected with the internal surface of described cylindrical shell, the elastic sleeve being connected with elastic ring internal surface, and elastic sleeve is placed on described regulating lever.
In the time that rock gas occurs to reveal, rock gas enters cylindrical shell, then overflows from cylindrical shell upper end.In order to stop natural gas leaking, elastic ring and elastic sleeve are set in cylindrical shell, when rock gas enters after cylindrical shell, the internal pressure of cylindrical shell increases, under the effect of pressure, elastic sleeve is pressed on regulating lever, thereby avoids rock gas to overflow by the gap between elastic sleeve and regulating lever.
Further, described spool also comprises the limited ring being connected with the internal surface of described cylindrical shell, and limited ring contacts with the upper surface of described elastic ring, between the internal surface of limited ring and the outer surface of described regulating lever, has gap.
In the time that inner barrel pressure increases, limited ring can prevent that elastic ring from deforming in longitudinal extent, thereby avoids causing elastic sleeve cannot be fitted in the problem on regulating lever completely because of elastic ring distortion.
Further, between described cylindrical shell end and described regulating lever, be provided with seal ring B.
Seal ring B is set, can stops the rock gas in valve body to enter cylindrical shell, further avoid the possibility of leaking.
In sum, advantage of the present invention and beneficial effect are:
1. the present invention can realize the fine adjustment of gas discharge;
2. seal ring A is set, can prevents that rock gas from being entered and being adjusted after cylinder by strip hole, flow into and adjust cylinder and adjust the gap between body, then flow out by the hole of adjusting cylinder bottom, thereby make the Flow-rate adjustment of rock gas more accurately controlled;
3. elastic ring and elastic sleeve are set in cylindrical shell, and when rock gas enters after cylindrical shell, the internal pressure of cylindrical shell increases, and under the effect of pressure, elastic sleeve is pressed on regulating lever, thereby avoids rock gas to overflow by the gap between elastic sleeve and regulating lever;
4. in the time that inner barrel pressure increases, limited ring can prevent that elastic ring from deforming in longitudinal extent, thereby avoids causing elastic sleeve cannot be fitted in the problem on regulating lever completely because of elastic ring distortion.
Brief description of the drawings
In order to be illustrated more clearly in embodiments of the invention, will be briefly described describing the required accompanying drawing of using in the embodiment of the present invention below.Apparent, the accompanying drawing in the following describes is only some embodiments that record in the present invention, to those skilled in the art, in the situation that not paying creative work, can also, according to accompanying drawing below, obtain other accompanying drawing.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of spool;
Fig. 3 is that the A-A of Fig. 2 is to sectional view;
Wherein, the component title that reference character is corresponding is as follows:
1-valve body, 2-spool, 101-inlet end, 102-outlet side, 103-spacer body, 104-vent, 105-spool mounting hole, 201-cylindrical shell, 202-regulating lever, 203-adjusts body, and 204-adjusts cylinder, 205-strip hole, the fan-shaped chamber of 206-, 207-exhaust port, 208-handwheel, 209-seal ring A, 210-limit body, 211-elastic ring, 212-elastic sleeve, 213-limited ring, 214-seal ring B.
Embodiment
In order to make those skilled in the art understand better the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is carried out to clear, complete description.Apparent, embodiment described below is only the part in the embodiment of the present invention, instead of all.The embodiment who records based on the present invention, other all embodiments that those skilled in the art obtain in the situation that not paying creative work, all in the scope of protection of the invention.
Embodiment 1:
As shown in Fig. 1 ~ Fig. 3, the stepless flow control valve of rock gas, comprises valve body 1 and spool 2, valve body 1 comprises inlet end 101, outlet side 102 and is connected with valve body 1 internal surface and spacer body 103 between inlet end 101 and outlet side 102, the vertical section that spacer body 103 comprises horizontal segment, is connected with horizontal segment two ends, offers vent 104 on horizontal segment, the top of valve body 1 offers the spool mounting hole 105 corresponding with vent 104, spool 2 comprises cylindrical shell 201, regulating lever 202, adjust body 203 and adjust cylinder 204, cylindrical shell 201 is fixed in spool mounting hole 105, adjust the cylindrical structure that cylinder 204 is closed at both ends, adjusting cylinder 204 is fixed in vent 104, adjusting body 203 is arranged in adjustment cylinder 204, the outer surface of adjusting body 203 contacts with the internal surface of adjusting cylinder 204, regulating lever 202 runs through the two ends of cylindrical shell 201, the top that adjustment cylinder 204 is run through in the bottom of regulating lever 202 is connected with the center portion of adjusting body 203, adjust cylinder 204 and offer in the horizontal direction strip hole 205, strip hole 205 is positioned at vent 104 tops, the central angle of strip hole 205 is less than 180 °, adjust on body 203 and offer the fan-shaped chamber 206 identical with the central angle of strip hole 205, fan-shaped chamber 206 and strip hole 205 are at sustained height, the bottom of adjusting body 203 offers the exhaust port 207 being communicated with fan-shaped chamber 206, the bottom of adjusting cylinder 204 offers the hole corresponding with exhaust port 207, spool 2 also comprises the handwheel 208 being connected with regulating lever 202 tops.
This modulating valve is in the time of work, and the rock gas flowing into from inlet end 101 enters from the strip hole 205 of adjusting cylinder 204 the fan-shaped chamber 206 of adjusting on body 203, then enters outlet side 102 by exhaust port 207.Rotate and adjust body 203 by handwheel 208, the relative position of fan-shaped chamber 206 and strip hole 205 is changed, when fan-shaped chamber 206 is during completely just to strip hole 205, in unit time, enter the amount of natural gas maximum in fan-shaped chamber 206, in the time that fan-shaped chamber 206 diminishes with the area of overlap of strip hole 205, the amount of natural gas that enters fan-shaped chamber 206 in unit time diminishes, and so can realize the fine adjustment of gas discharge.
Embodiment 2:
As depicted in figs. 1 and 2, the present embodiment is on embodiment 1 basis, and described spool also comprises two seal ring A209, and seal ring A209 is arranged at the described internal surface of adjusting cylinder 204, and seal ring A209 lays respectively at the above and below of described strip hole 205.
Seal ring A209 is set, can prevents that rock gas from being entered and being adjusted after cylinder 204 by strip hole 205, flow into and adjust cylinder 204 and adjust the gap between body 203, then flow out by the hole of adjusting cylinder 204 bottoms, thereby make the Flow-rate adjustment of rock gas more accurately controlled.
Embodiment 3:
As shown in Figure 3, the present embodiment is on embodiment 1 or 2 basis, and described spool 2 also comprises and is arranged at described strip hole 205 ends and extends to the limit body 210 in described fan-shaped chamber 206.
Limit body 210 is set, and staff is in the process of adjust flux, and modulating valve is in the time of standard-sized sheet or full-shut position, and limit body 210 can stop adjustment body 203 to be rotated further, and makes staff obtain clear and definite feedback, has improved convenience of use.
Embodiment 4:
As shown in Figure 2, the present embodiment is on above-mentioned any one embodiment's basis, described spool 2 also comprises the elastic ring 211 being connected with the internal surface of described cylindrical shell 201, the elastic sleeve 212 being connected with elastic ring 211 internal surfaces, and elastic sleeve 212 is placed on described regulating lever 202.
In the time that rock gas occurs to reveal, rock gas enters cylindrical shell 201, then overflows from cylindrical shell 201 upper ends.In order to stop natural gas leaking, elastic ring 211 and elastic sleeve 212 are set in cylindrical shell 201, when rock gas enters after cylindrical shell 201, the internal pressure of cylindrical shell 201 increases, under the effect of pressure, elastic sleeve 212 is pressed on regulating lever 202, thereby overflows in the gap of avoiding rock gas to pass through between elastic sleeve 212 and regulating lever 202.
Embodiment 5:
As shown in Figure 2, the present embodiment is on embodiment 4 basis, described spool 2 also comprises the limited ring 213 being connected with the internal surface of described cylindrical shell 201, and limited ring 213 contacts with the upper surface of described elastic ring 211, between the internal surface of limited ring 213 and the outer surface of described regulating lever 202, has gap.
In the time that cylindrical shell 201 internal pressures increase, limited ring 213 can prevent that elastic ring 211 from deforming in longitudinal extent, thereby avoids causing elastic sleeve 212 cannot be fitted in the problem on regulating lever 202 completely because of elastic ring 211 distortion.
Embodiment 6:
As shown in Figure 2, the present embodiment, on above-mentioned any one embodiment's basis, is provided with seal ring B214 between described cylindrical shell 201 ends and described regulating lever 202.
Seal ring B214 is set, can stops the rock gas in valve body 1 to enter cylindrical shell 201, further avoid the possibility of leaking.
As mentioned above, just can realize preferably the present invention.
Claims (6)
1. the stepless flow control valve of rock gas, is characterized in that:
Comprise valve body (1) and spool (2);
Valve body (1) comprises inlet end (101), outlet side (102) and is connected with valve body (1) internal surface and is positioned at the spacer body (103) between inlet end (101) and outlet side (102), the vertical section that spacer body (103) comprises horizontal segment, is connected with horizontal segment two ends, offers vent (104) on horizontal segment;
The top of valve body (1) offers the spool mounting hole (105) corresponding with vent (104);
Spool (2) comprises cylindrical shell (201), regulating lever (202), adjust body (203) and adjust cylinder (204), cylindrical shell (201) is fixed in spool mounting hole (105), adjust the cylindrical structure that cylinder (204) is closed at both ends, adjusting cylinder (204) is fixed in vent (104), adjusting body (203) is arranged in adjustment cylinder (204), the outer surface of adjusting body (203) contacts with the internal surface of adjusting cylinder (204), regulating lever (202) runs through the two ends of cylindrical shell (201), the top that adjustment cylinder (204) is run through in the bottom of regulating lever (202) is connected with the center portion of adjusting body (203), adjust cylinder (204) and offer in the horizontal direction strip hole (205), strip hole (205) is positioned at vent (104) top, the central angle of strip hole (205) is less than 180 °, adjust on body (203) and offer the fan-shaped chamber (206) identical with the central angle of strip hole (205), fan-shaped chamber (206) and strip hole (205) are at sustained height, the bottom of adjusting body (203) offers the exhaust port (207) being communicated with fan-shaped chamber (206), the bottom of adjusting cylinder (204) offers the hole corresponding with exhaust port (207),
Spool (2) also comprises the handwheel (208) being connected with regulating lever (202) top.
2. the stepless flow control valve of rock gas according to claim 1, is characterized in that:
Described spool also comprises two seal ring A(209), seal ring A(209) be arranged at the described internal surface of adjusting cylinder (204), seal ring A(209) lay respectively at the above and below of described strip hole (205).
3. the stepless flow control valve of rock gas according to claim 1, is characterized in that:
Described spool (2) also comprises and is arranged at described strip hole (205) end and extends to the limit body (210) in described fan-shaped chamber (206).
4. the stepless flow control valve of rock gas according to claim 1, is characterized in that:
Described spool (2) also comprise the elastic ring (211) that is connected with the internal surface of described cylindrical shell (201), with the elastic sleeve (212) that elastic ring (211) internal surface is connected, elastic sleeve (212) is placed on described regulating lever (202).
5. the stepless flow control valve of rock gas according to claim 4, is characterized in that:
Described spool (2) also comprises the limited ring (213) being connected with the internal surface of described cylindrical shell (201), limited ring (213) contacts with the upper surface of described elastic ring (211), between the internal surface of limited ring (213) and the outer surface of described regulating lever (202), has gap.
6. the stepless flow control valve of rock gas according to claim 1, is characterized in that:
Between described cylindrical shell (201) end and described regulating lever (202), be provided with seal ring B(214).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410358902.2A CN104132154A (en) | 2014-07-27 | 2014-07-27 | Stepless natural gas flow regulating valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410358902.2A CN104132154A (en) | 2014-07-27 | 2014-07-27 | Stepless natural gas flow regulating valve |
Publications (1)
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CN104132154A true CN104132154A (en) | 2014-11-05 |
Family
ID=51804945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201410358902.2A Pending CN104132154A (en) | 2014-07-27 | 2014-07-27 | Stepless natural gas flow regulating valve |
Country Status (1)
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CN (1) | CN104132154A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105972239A (en) * | 2016-06-12 | 2016-09-28 | 佛山市云米电器科技有限公司 | Flow regulating valve |
CN114087390A (en) * | 2021-12-06 | 2022-02-25 | 山东省鲁商冰轮建筑设计有限公司 | Multistage sealed self-control valve of carbon dioxide refrigerating system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1549800A (en) * | 2001-08-28 | 2004-11-24 | ���Ͱ�˹���ڱ� | Annular seal, especially for a ball valve |
CN200989463Y (en) * | 2006-11-20 | 2007-12-12 | 李建忠 | Flow regulating valve |
CN201028032Y (en) * | 2007-05-10 | 2008-02-27 | 周翔 | Energy-saving mixed gas flow control valve |
JP4174145B2 (en) * | 1999-09-27 | 2008-10-29 | シーケーディ株式会社 | Check valve and switching valve equipped with the check valve |
CN202746609U (en) * | 2012-08-16 | 2013-02-20 | 欧文托普阀门系统(北京)有限公司 | Large flow valve |
CN203948658U (en) * | 2014-07-27 | 2014-11-19 | 成都国光电子仪表有限责任公司 | Gas discharge step-less adjustment valve |
-
2014
- 2014-07-27 CN CN201410358902.2A patent/CN104132154A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4174145B2 (en) * | 1999-09-27 | 2008-10-29 | シーケーディ株式会社 | Check valve and switching valve equipped with the check valve |
CN1549800A (en) * | 2001-08-28 | 2004-11-24 | ���Ͱ�˹���ڱ� | Annular seal, especially for a ball valve |
CN200989463Y (en) * | 2006-11-20 | 2007-12-12 | 李建忠 | Flow regulating valve |
CN201028032Y (en) * | 2007-05-10 | 2008-02-27 | 周翔 | Energy-saving mixed gas flow control valve |
CN202746609U (en) * | 2012-08-16 | 2013-02-20 | 欧文托普阀门系统(北京)有限公司 | Large flow valve |
CN203948658U (en) * | 2014-07-27 | 2014-11-19 | 成都国光电子仪表有限责任公司 | Gas discharge step-less adjustment valve |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105972239A (en) * | 2016-06-12 | 2016-09-28 | 佛山市云米电器科技有限公司 | Flow regulating valve |
CN105972239B (en) * | 2016-06-12 | 2018-10-16 | 佛山市云米电器科技有限公司 | Flow control valve |
CN114087390A (en) * | 2021-12-06 | 2022-02-25 | 山东省鲁商冰轮建筑设计有限公司 | Multistage sealed self-control valve of carbon dioxide refrigerating system |
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Application publication date: 20141105 |