CN103644341A - Cutting off type indoor pressure regulator - Google Patents
Cutting off type indoor pressure regulator Download PDFInfo
- Publication number
- CN103644341A CN103644341A CN201310730224.3A CN201310730224A CN103644341A CN 103644341 A CN103644341 A CN 103644341A CN 201310730224 A CN201310730224 A CN 201310730224A CN 103644341 A CN103644341 A CN 103644341A
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- CN
- China
- Prior art keywords
- cutting
- cut
- pressure
- outlet
- valve
- 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
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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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/044—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with more than one spring
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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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0486—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with mechanical actuating means
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention belongs to the technical field of fuel gas transmission and distribution equipment, and discloses a cutting off type indoor pressure regulator which is mainly technically characterized by comprising a valve body with an inlet and an outlet, wherein a cutting off cavity is formed at the matched part of the valve body and a valve opening, and is provided with a cutting off membrane with a cutting off tray; an upper cavity on the cutting off membrane is communicated with the outlet of the valve body through a gas passage; a lower cavity below the cutting off membrane is provided with an overpressure cutting off adjusting spring, an overpressure cutting off adjusting nut, a decompression cutting off adjusting spring and a decompression cutting off adjusting nut; a cutting off movable valve and a cutting off pushing spring are arranged at the top end of a stop valve rod of which the upper end penetrates through the cutting off cavity; a cutting off handle is arranged at the bottom end of the stop valve rod; a locking groove is formed in the match part of the stop valve rod and the cutting off membrane; locking steel balls are arranged at the matched part of the stop valve rod and the locking groove. The cutting off type indoor pressure regulator is provided with overpressure and decompression cutting off devices, and the use is relatively safe and convenient.
Description
Technical field
The invention belongs to gas transmission and distribution equipment technical field, relate in particular to a kind of cutting type indoor application pressure governor.
Background technique
Gas pressure regulator, governor is to be specially adapted in gas transmission and distribution system, as the Gas Regulator of pressure regulation, voltage stabilizing, being widely used in gas transmission and distribution engineering.Its effect is automatic regulating gas air outlet pressure, makes it be stabilized in a certain pressure range, meets user's required pressure value, meets usage requirement.The gas pressure regulator, governor of current use, its structure comprises the valve body with import and outlet, in valve body, be provided with valve port and with the voltage regulation diaphragm of pressure regulation pallet, above voltage regulation diaphragm, be provided with pressure adjusting spring and look nut, below voltage regulation diaphragm, be provided with coupling shaft, coupling shaft is connected by lever and pressure regulation valve alive.Pressure governor is when normal work, and outlet pressure acts on the power of voltage regulation diaphragm bottom surface and power that pressure adjusting spring acts on voltage regulation diaphragm end face reaches balance, and valve port is in normal open mode.Combustion gas enters valve body by import, after valve port reducing pressure by regulating flow, by outlet, enters downstream line.When outlet pressure reduces, voltage regulation diaphragm with pressure regulation pallet moves down under pressure adjusting spring effect, by coupling shaft, drive lever tail to move down, lever head moves up, and drives pressure regulation valve alive to move up, and the gap that pressure regulation is lived between valve and valve port is increased, increase combustion gas throughput, outlet pressure is raise, return to setting value, keep pressure governor normally to work.When inlet pressure raises, voltage regulation diaphragm compression pressure adjusting spring with pressure regulation pallet moves up, by coupling shaft, drive lever tail to move up, lever head moves down, and drives pressure regulation valve alive to move down, and the gap that pressure regulation is lived between valve and valve port reduces, reduce combustion gas throughput, outlet pressure is reduced, return to setting value, keep pressure governor normally to work.The gas pressure regulator, governor of this structure, needs other configuration cuts valve, and is unsuitable for the pipeline of combustion gas shunting.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of shut-off means that carries, and is suitable for the cutting type indoor application pressure governor of combustion gas shunt conduit.
For solving the problems of the technologies described above, the technical solution used in the present invention is: comprise the valve body with import and outlet, in valve body, be provided with valve port and with the voltage regulation diaphragm of pressure regulation pallet, above voltage regulation diaphragm, be provided with pressure adjusting spring and look nut, below voltage regulation diaphragm, be provided with coupling shaft, coupling shaft is connected by lever and pressure regulation valve alive, being provided with and cutting off chamber with valve port matching part of described valve body, cut off in chamber and be provided with the cut-out diaphragm that cuts off pallet, the upper cavity cutting off above diaphragm is connected with the outlet of valve body by gas channel, in lower chamber below cut-out diaphragm, be provided with excess pressure cutout Regulation spring and excess pressure cutout adjusting nut, decompression cuts off Regulation spring and decompression is cut off adjusting nut, the top that upper end passes the cut-out valve rod that cuts off chamber is provided with cut-out valve alive and cuts off propelling spring, the bottom that cuts off valve rod is provided with and cuts off handle, cut off valve rod and be provided with the moving groove of lock with cut-out matching part, diaphragm position, be provided with the moving steel ball of lock with the moving groove of lock matching part.
Its additional technical feature is: the outlet of described valve body is that the first outlet and second exports two, the first outlet and import coaxial line, and the second outlet is vertical with import axis.
When cutting type indoor application pressure governor provided by the present invention uses, the interior voltage regulation diaphragm with pressure regulation pallet of valve body moves up and down to realize and adjusts mouth pressure, keeps pressure governor normally to work.In cut-out chamber now, the upper cavity pressure above cut-out diaphragm and excess pressure cutout Regulation spring, decompression are cut off between Regulation spring and are kept balance, and the moving steel ball of lock moves in groove and locks cut-off valve bar at the lock that cuts off valve rod, cut off the valve of living away from valve port.When outlet pressure raises over setting pressure, the gaseous-pressure of outlet passes to the upper cavity cutting off above diaphragm by gas channel, the pressure that cuts off the upper cavity above diaphragm increases, cutting off diaphragm drives cut-out pallet compression excess pressure cutout Regulation spring to move down, the moving steel ball of lock is domatic to external diffusion along the moving groove of lock, when the moving groove scope of the moving steel ball release lock of lock, locking release, cut off valve rod moves up under the effect of cut-out propelling spring, cutting off the valve of living seals valve port, cut off source of the gas, reach the object of safety cut-off.After fixing a breakdown, pull with hand and cut off handle, make to lock steel ball and reset in the moving groove of lock that cuts off valve rod, can relock cut-out valve rod, valve body normal ventilation.
When outlet pressure reduces over setting pressure, the gaseous-pressure of outlet passes to the upper cavity cutting off above diaphragm by gas channel, cut off the pressure decreased of the upper cavity above diaphragm, decompression is cut off Regulation spring and is promoted cut-out pallet and cut off diaphragm to move up, the moving steel ball of lock is domatic to external diffusion along the moving groove of lock, when the moving groove scope of the moving steel ball release lock of lock, locking release, cut off valve rod moves up under the effect of cut-out propelling spring, cutting off the valve of living seals valve port, cut off source of the gas, reach the object of safety cut-off.After fixing a breakdown, pull with hand and cut off handle, make to lock steel ball and reset in the moving groove of lock that cuts off valve rod, can relock cut-out valve rod, valve body normal ventilation.
Cutting type indoor application pressure governor provided by the present invention carries superpressure, decompression shut-off means, uses safer convenience.The outlet of valve body is that the first outlet and second exports two, the first outlet and import coaxial line, and the second outlet is vertical with import axis.Import and two outlets are positioned at forward and backward, lower three directions of valve body, can use as required one or two outlet, applied widely, can be applicable to shunt conduit, its angle type moulding, and convenient installation connects.
Accompanying drawing explanation
Fig. 1 is the structural representation of cutting type indoor application pressure governor of the present invention;
Fig. 2 is for cutting off the structural representation in chamber;
Fig. 3 is the structural representation of valve rod;
Fig. 4 is the another kind of structural representation of cutting type indoor application pressure governor.
Embodiment
Below in conjunction with accompanying drawing, structure and the working principle of cutting type indoor application pressure governor of the present invention are described in further details.
As shown in Figure 1, cutting type indoor application pressure governor of the present invention comprises valve body 1, valve body 1 is with import 2 and outlet 3, in valve body 1, be provided with valve port 4 and with the voltage regulation diaphragm 6 of pressure regulation pallet 5, voltage regulation diaphragm 6 is provided with pressure adjusting spring 7 and look nut 8 above, voltage regulation diaphragm 6 is provided with coupling shaft 9 below, coupling shaft 9 is connected by lever 10 and pressure regulation valve 11 alive, pressure regulation valve 11 alive matches with valve port 4, being provided with and cutting off chamber 12 with valve port 4 matching parts of valve body 1, cut off in chamber 12 and be provided with the cut-out diaphragm 14 that cuts off pallet 13, the upper cavity 15 cutting off above diaphragm is connected with the outlet 3 of valve body 1 by gas channel 16.As shown in Figure 2, cut off in chamber 12 and be provided with the cut-out diaphragm 14 that cuts off pallet 13, the upper cavity 15 cutting off above diaphragm is provided with gas channel 16, in lower chamber 17 below cut-out diaphragm, be provided with excess pressure cutout Regulation spring 18 and excess pressure cutout adjusting nut 19, decompression cuts off Regulation spring 20 and decompression is cut off adjusting nut 21, the top that upper end passes the cut-out valve rod 22 that cuts off chamber 12 is provided with cut-out valve 23 alive and cuts off propelling spring 24, the bottom that cuts off valve rod 22 is provided with and cuts off handle 25, cut off valve rod 22 and be provided with the moving groove 26 of lock with cut-out diaphragm 14 matching parts, position, be provided with the moving steel ball 27 of lock with the moving groove of lock 26 matching parts.As shown in Figure 3, the top that cuts off valve rod 22 is provided with to cut off and lives valve 23 and cut off propelling spring 24, and the bottom that cuts off valve rod 22 is provided with and cuts off handle 25, cuts off valve rod 22 and is provided with the moving groove 26 of lock, is provided with the moving steel ball 27 of lock with the moving groove of lock 26 matching parts.As shown in Figure 4, valve body 1 exports 3 ' two outlets with import 2 and the first outlet 3, second, the first outlet 3 and import 2 coaxial lines, and the second outlet 3 ' is vertical with import 2 axis.
Cutting type indoor application pressure governor provided by the present invention is when normal work, and the power that power and the pressure adjusting spring 7 of outlet 3 pressure-actings in voltage regulation diaphragm 6 bottom surfaces acts on voltage regulation diaphragm 6 end faces reaches balance, and valve port 4 is in normal open mode.Combustion gas enters valve body 1 by import 2, after valve port 4 reducing pressure by regulating flows, by exporting 3, enters downstream line.When outlet 3 pressure decreased, voltage regulation diaphragm 6 with pressure regulation pallet 5 moves down under pressure adjusting spring 7 effects, by coupling shaft 9, drive lever 10 tail down to move, lever 10 heads move up, and drive pressure regulation valve 11 alive to move up, and the gap that pressure regulation is lived between valve 11 and valve port 4 is increased, increase combustion gas throughput, make to export 3 pressure and raise, return to setting value, keep pressure governor normally to work.When import 2 pressure raise, voltage regulation diaphragm 6 compression pressure adjusting springs 7 with pressure regulation pallet 5 move up, by coupling shaft 9, drive lever 10 afterbodys to move up, lever 10 heads move down, and drive pressure regulation valve 11 alive to move down, and the gap that pressure regulation is lived between valve 11 and valve port 4 reduces, reduce combustion gas throughput, make to export 3 pressure decreaseds, return to setting value, keep pressure governor normally to work.
When pressure governor is normally worked, cut off chamber 12 internal cutting off diaphragms 14 upper cavity 15 pressure and excess pressure cutout Regulation spring 18, decompression above and cut off 20 maintenance balances of Regulation spring, the moving steel ball 27 of lock, at the moving interior locking cut-off valve of groove 26 bar 22 of the lock that cuts off valve rod 22, cuts off the valve 23 of living away from valve port 4.When outlet 3 pressure raise over setting pressure, the gaseous-pressure of outlet 3 passes to the upper cavity 15 cutting off above diaphragm by gas channel 16, the pressure that cuts off the upper cavity 15 above diaphragm increases, cutting off diaphragm 14 drives cut-out pallet 13 compression excess pressure cutout Regulation springs 18 to move down, the moving steel ball 27 of lock is domatic to external diffusion along the moving groove 26 of lock, when moving groove 26 scope of moving steel ball 27 release locks of lock, locking release, cut off valve rod 22 moves up under 24 effects of cut-out propelling spring, cut off the valve 23 of living by valve port 4 sealings, cut off source of the gas, reach the object of safety cut-off.After fixing a breakdown, pull with hand and cut off handle 25, make to lock steel ball 27 and reset in the moving groove 26 of lock that cuts off valve rod 22, can relock and cut off valve rod 22, valve body 1 normal ventilation.
When outlet 3 pressure decreaseds surpass setting pressure, the gaseous-pressure of outlet 3 passes to the upper cavity 15 cutting off above diaphragm by gas channel 16, cut off the pressure decreased of the upper cavity 15 above diaphragm, decompression is cut off Regulation spring 20 and is promoted cut-out pallet 13 and cut off diaphragm 14 to move up, the moving steel ball 27 of lock is domatic to external diffusion along the moving groove 26 of lock, when moving groove 26 scope of moving steel ball 27 release locks of lock, locking release, cut off valve rod 22 moves up under 24 effects of cut-out propelling spring, cut off the valve 23 of living by valve port 4 sealings, cut off source of the gas, reach the object of safety cut-off.After fixing a breakdown, pull with hand and cut off handle 25, make to lock steel ball 27 and reset in the moving groove 26 of lock that cuts off valve rod 22, can relock and cut off valve rod 22, valve body 1 normal ventilation.
Cutting type indoor application pressure governor provided by the present invention carries superpressure, decompression shut-off means, uses safer convenience.The outlet of valve body 1 is that the first outlet 3 and second exports 3 ' two, the first outlet 3 and import 2 coaxial lines, and the second outlet 3 ' is vertical with import 2 axis.Import 2 and 3 ' two outlets of first outlet the 3, second outlet are positioned at forward and backward, lower three directions of valve body 1, can use as required one or two outlet, applied widely, can be applicable to shunt conduit, its angle type moulding, and convenient installation connects.
Cutting type indoor application pressure governor provided by the invention is not limited only to said structure, so long as structure is identical with the present invention, all falls into protection domain of the present invention.
Claims (2)
1. cutting type indoor application pressure governor, comprise the valve body with import and outlet, in valve body, be provided with valve port and with the voltage regulation diaphragm of pressure regulation pallet, above voltage regulation diaphragm, be provided with pressure adjusting spring and look nut, below voltage regulation diaphragm, be provided with coupling shaft, coupling shaft is connected by lever and pressure regulation valve alive, it is characterized in that: being provided with and cutting off chamber with valve port matching part of described valve body, cut off in chamber and be provided with the cut-out diaphragm that cuts off pallet, the upper cavity cutting off above diaphragm is connected with the outlet of valve body by gas channel, in lower chamber below cut-out diaphragm, be provided with excess pressure cutout Regulation spring and excess pressure cutout adjusting nut, decompression cuts off Regulation spring and decompression is cut off adjusting nut, the top that upper end passes the cut-out valve rod that cuts off chamber is provided with cut-out valve alive and cuts off propelling spring, the bottom that cuts off valve rod is provided with and cuts off handle, cut off valve rod and be provided with the moving groove of lock with cut-out matching part, diaphragm position, be provided with the moving steel ball of lock with the moving groove of lock matching part.
2. cutting type indoor application pressure governor according to claim 1, is characterized in that: the outlet of described valve body is that the first outlet and second exports two, the first outlet and import coaxial line, and the second outlet is vertical with import axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730224.3A CN103644341A (en) | 2013-12-26 | 2013-12-26 | Cutting off type indoor pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730224.3A CN103644341A (en) | 2013-12-26 | 2013-12-26 | Cutting off type indoor pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103644341A true CN103644341A (en) | 2014-03-19 |
Family
ID=50249602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310730224.3A Pending CN103644341A (en) | 2013-12-26 | 2013-12-26 | Cutting off type indoor pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103644341A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633196A (en) * | 2015-02-11 | 2015-05-20 | 河北安信燃气设备有限公司 | Front Voltage regulator of medium pressure indoor table for super-voltage-loss excess flow cut-off protection |
| CN110206920A (en) * | 2019-04-26 | 2019-09-06 | 林德工程（杭州）有限公司 | Self-operated pressure reducing valve with superpressure safety cut-off function |
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| CN2636019Y (en) * | 2003-07-24 | 2004-08-25 | 谷红军 | Gas presure regulator |
| US20080257420A1 (en) * | 2007-04-20 | 2008-10-23 | Fisher Controls International Llc | Slam shut safety device |
| CN201196340Y (en) * | 2008-05-07 | 2009-02-18 | 常州市科信燃气设备有限公司 | Gas pressure regulator |
| CN201310665Y (en) * | 2008-12-17 | 2009-09-16 | 袁勇 | Hyper-pressure pressure-loss emergency shut-off valve |
| CN201884728U (en) * | 2010-10-11 | 2011-06-29 | 费希尔久安输配设备(成都)有限公司 | Gas pressure regulator |
| CN202545906U (en) * | 2012-04-12 | 2012-11-21 | 成都华泰燃气设备有限公司 | Quick action emergency valve |
| US20130133755A1 (en) * | 2011-11-30 | 2013-05-30 | Fisher Controls International Llc | Slam-Shut Safety Device Having a Cage |
| CN203230905U (en) * | 2013-05-19 | 2013-10-09 | 河北永良燃气设备有限公司 | Gas over-pressure and under-pressure cutoff valve |
| CN203670956U (en) * | 2013-12-26 | 2014-06-25 | 谷红军 | Cutting-off-type pressure regulator used indoors |
-
2013
- 2013-12-26 CN CN201310730224.3A patent/CN103644341A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636019Y (en) * | 2003-07-24 | 2004-08-25 | 谷红军 | Gas presure regulator |
| US20080257420A1 (en) * | 2007-04-20 | 2008-10-23 | Fisher Controls International Llc | Slam shut safety device |
| CN201196340Y (en) * | 2008-05-07 | 2009-02-18 | 常州市科信燃气设备有限公司 | Gas pressure regulator |
| CN201310665Y (en) * | 2008-12-17 | 2009-09-16 | 袁勇 | Hyper-pressure pressure-loss emergency shut-off valve |
| CN201884728U (en) * | 2010-10-11 | 2011-06-29 | 费希尔久安输配设备(成都)有限公司 | Gas pressure regulator |
| US20130133755A1 (en) * | 2011-11-30 | 2013-05-30 | Fisher Controls International Llc | Slam-Shut Safety Device Having a Cage |
| CN202545906U (en) * | 2012-04-12 | 2012-11-21 | 成都华泰燃气设备有限公司 | Quick action emergency valve |
| CN203230905U (en) * | 2013-05-19 | 2013-10-09 | 河北永良燃气设备有限公司 | Gas over-pressure and under-pressure cutoff valve |
| CN203670956U (en) * | 2013-12-26 | 2014-06-25 | 谷红军 | Cutting-off-type pressure regulator used indoors |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633196A (en) * | 2015-02-11 | 2015-05-20 | 河北安信燃气设备有限公司 | Front Voltage regulator of medium pressure indoor table for super-voltage-loss excess flow cut-off protection |
| CN104633196B (en) * | 2015-02-11 | 2017-02-01 | 河北安信燃气设备有限公司 | Front Voltage regulator of medium pressure indoor table for super-voltage-loss excess flow cut-off protection |
| CN110206920A (en) * | 2019-04-26 | 2019-09-06 | 林德工程（杭州）有限公司 | Self-operated pressure reducing valve with superpressure safety cut-off function |
| CN110206920B (en) * | 2019-04-26 | 2023-09-15 | 林德工程（杭州）有限公司 | Self-operated pressure reducing valve with overpressure safety cut-off function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI RUIXING GAS EQUIPMENT CO., LTD. Free format text: FORMER OWNER: GU HONGJUN Effective date: 20150729 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150729 Address after: 053100 north side of Industrial Street, Zaoqiang County, Hebei, Hengshui Applicant after: Hebei rising gas equipment Limited by Share Ltd Address before: Hengshui City, Hebei province 053100 glass Zaoqiang County Industrial Steel City Street on the north side of Hebei rising gas equipment Co. Ltd. Applicant before: Gu Hongjun |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140319 |
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| RJ01 | Rejection of invention patent application after publication |