CN106370250A - Device for detecting valve opening in-place of gas meter based on photoelectric reflection technology - Google Patents
Device for detecting valve opening in-place of gas meter based on photoelectric reflection technology Download PDFInfo
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- CN106370250A CN106370250A CN201610678987.1A CN201610678987A CN106370250A CN 106370250 A CN106370250 A CN 106370250A CN 201610678987 A CN201610678987 A CN 201610678987A CN 106370250 A CN106370250 A CN 106370250A
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- Prior art keywords
- gas meter
- fixed station
- valve opening
- flow meter
- reflection technology
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a device for detecting valve opening in-place of a gas meter based on the photoelectric reflection technology, and relates to the technical field of gas meters. The device comprises a reducer tank body and a tank cover which are tightly connected to form a cavity structure, wherein a fixed station with a bulged inner wall is arranged on the tank cover; a light absorption chamber is formed by the fixed station, the tank cover and the reducer tank body; a guide sleeve is connected with the side wall of the reducer tank body, and is movably connected with a valve rod; the valve rod is positioned between the fixed station and the bottom plate of the reducer tank body; and the fixed station is connected with a photoelectric transceiver. The device can be used for solving the technical problem of detection failure caused by an unreliable gas meter valve-opening-in-place signal detection mechanism in the prior art, and has the beneficial effect of accurate and reliable gas meter valve-opening-in-place signal detection, has a compact structure, is reasonable in distribution and small in size, and is beneficial to gas meter minimization.
Description
Technical field
The present invention relates to gas meter, flow meter technical field, especially relate to a kind of structure to gas meter, flow meter valve opening detection means.
Background technology
With the continuous development of natural gas applications, the usage amount of gas meter, flow meter is also sharply increasing, meanwhile, the quality of gas meter, flow meter
And the requirement of performance also more and more higher.In gas meter, flow meter, opening and closing of valve is the most important condition that gas meter, flow meter runs.Valve
Whether valve opening puts in place directly influences the pressure loss size of gas meter, flow meter, so valve opening puts in place the accurate feedback of signal to close weight
Will.At present, typically the knowledge of signal that puts in place is realized by the method for motor rotation blockage electric current, magneto sensor detection in the industry in gas meter, flow meter
Not.Motor rotation blockage electric current, can affect motor service life.Magneto sensor is easily subject to extraneous strong magnetic disturbance it may appear that judging by accident.China is specially
Sharp Authorization Notice No. cn201540132u, authorized announcement date August in 2010 4 days, it is entitled that " control valve has switch and puts in place detection
The utility model patent of the gas meter, flow meter of function ", is that another valve opening puts in place signal detecting method.It include gas meter, flow meter main body and
Control valve, gas meter, flow meter main body includes intelligent control module, liquid crystal window, includes a burnt gas switch rotating shaft in control valve,
Burnt gas switch rotating shaft on install one driving tooth bar movement mechanism, there is undaform back at the back of tooth bar, closes on tooth bar ridge
Back of the body correspondence position is provided with electrode base, fixes two electrodes to curving in electrode base upper rack back correspondence position
Contact chip, below be fixed electrode contact chip, above be elastic electrode contact chip, elastic electrode contact chip top is inside
The contact of bending, elastic electrode contact chip raises up closing on contact position.This technical scheme with elastic electrode contact chip in
Fixed electrode contact chip separately or closure puts in place signal detecting valve opening, electrode contact plate is metal material using a period of time
Easily tired impaired, cause detection to lose efficacy.In addition this structure takes up room greatly, also unfavorable to gas meter, flow meter miniaturization.
Content of the invention
In order to solve gas meter, flow meter valve opening in prior art put in place signal detection mechanism unreliable cause detect lost efficacy technology
Problem, the present invention provides a kind of gas meter, flow meter valve opening based on photoelectric reflection technology to level detecting apparatus, reaches gas meter, flow meter valve opening and arrives
Position signal detection is reliable, and structure is simple, small volume is advantageously implemented the purpose of gas meter, flow meter miniaturization.
The technical scheme is that a kind of gas meter, flow meter valve opening based on photoelectric reflection technology to level detecting apparatus, it wraps
Include the reduction case being tightly connected into cavity body structure and case lid, case lid is provided with the fixed station of convex inner walls, fixed station, case lid and
Reduction case forms extinction room, and reduction-gear housing side wall is connected with guide pin bushing, and guide pin bushing may move and is connected with valve rod, and valve rod is located at solid
Determine between platform and the base plate of reduction case, fixed station is connected with optoelectronic transceivers.Opened with photoelectric reflection technology for detection gas meter, flow meter
Valve puts in place, eliminates the impaired institute of metal contact chip fatigue being easily subject to intensive magnetism attack, elastic electrode using magneto sensor detection signal
Cause the hidden danger of inefficacy, signal accuracy of judgement.Cavity body structure good leak tightness, eliminates high light interference, and signal is reliable.Structure is tight
Gather, arrangement is reasonable, small volume is advantageously implemented gas meter, flow meter miniaturization.
Preferably, fixed station is provided with connecting hole, connecting hole axis vertical base plate, optoelectronic transceivers include optical transmitting set
And optical receiver, optical transmitting set and optical receiver are located at and connect in the hole and be arranged symmetrically with connecting hole axis.
Preferably, valve rod is the list structure that cuboid and cylinder are formed by connecting, cuboid is tooth bar, cylinder is even
Bar, the downside of tooth bar is close with base plate, and the upper side of tooth bar is provided with reflector layer.
Preferably, optoelectronic transceivers to the distance of fixed station end face is h, the distance of fixed station end face to base plate is h, h
It is three to five times of h；Guarantee that detection signal is reliable.
Preferably, extinction chamber surface is provided with light-absorption layer, the light inlet of fixed station end and tooth bar end formation extinction room.
Preferably, the upper surface of tooth bar is close with fixed station end, connecting hole inwall is provided with light-absorption layer, connecting hole and tooth
The upper table of bar forms light office for incoming and outgoing mail.
Preferably, guide pin bushing is provided with inner sleeve for tubular inner chamber, between inner sleeve and guide pin bushing inwall be hollow out chamber, be inside arranged with
The pilot hole of reduction case inner space, pilot hole is matched with connecting rod, and inner sleeve end is connected with seal washer, bowl-shape in turn
Sealing ring and inner casing cover, seal washer, bowl seal circle are tightly connected with guide pin bushing, connecting rod respectively, and inner casing cover is with interior external threading even
Connect；Triple seal, lucifuge good airproof performance when valve rod is mobile.
Preferably, case lid edge is provided with inward flange and the outward flange of raised case lid inner surface, inward flange and outward flange with
Case lid connects section and becomes f shape.
Preferably, reduction case open end is provided with the embedded flange of raised end surface, embedded flange outer sides set
There is seal groove, seal groove is embedded with sealing ring, embedded flange embeds between inward flange and outward flange, and outward flange is crimped with sealing ring.
Compared with prior art, the invention has the beneficial effects as follows: gas meter, flow meter valve opening puts signal detection in place accurately, eliminates and makes
Easily it is subject to intensive magnetism attack, used the impaired caused mistake of elastic electrode detection signal metal contact chip fatigue with magneto sensor detection signal
The hidden danger of effect.Cavity body structure good leak tightness, eliminates high light interference, and detection signal is reliable.Compact conformation, arrangement is reasonable, volume
Little, it is advantageously implemented gas meter, flow meter miniaturization.
Brief description
Accompanying drawing 1 is sectional view during Gas meter valve door closure state of the present invention；
Accompanying drawing 2 is the enlarged drawing of b in Fig. 1；
Accompanying drawing 3 is the enlarged drawing of a in Fig. 1；
Sectional view when putting state in place opened by accompanying drawing 4 for gas meter valve of the present invention；
Accompanying drawing 5 is the enlarged drawing of c in Fig. 4.
In figure: 1- case lid；2- optoelectronic transceivers；4- guide pin bushing；5- inner casing cover；6- bowl seal circle；7- seal washer；8- subtracts
Fast device casing；11- fixed station；12- inward flange；13- outward flange；21- optical transmitting set；22- optical receiver；23- light office for incoming and outgoing mail；
31- tooth bar；32- connecting rod；41- inner sleeve；81- sealing ring；82- extinction room；83- embeds flange；84- base plate；85- light inlet.
Specific embodiment
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment 1:
As shown in Figure 1,2 and 3, a kind of gas meter, flow meter valve opening based on photoelectric reflection technology is to level detecting apparatus.It includes decelerator
Casing 8 and case lid 1.Reduction case 8 upper end open, the corresponding face of opening is bottom surface is base plate 84.Base plate 84 upper surface is light
Sliding surface.Reduction case 8 open end is provided with the embedded flange 83 of raised end surface.Embedded flange 83 is along reduction case 8
Open end setting in a week.It is provided with seal groove outside embedded flange 83.It is embedded that seal groove is absorbed in reduction case 8 open end edge
The setting in one week of flange 83 lateral surface.Seal groove is embedded with sealing ring 81.Case lid 1 edge is provided with the inward flange of raised case lid 1 inner surface
12 and outward flange 13.Outward flange 13 is along the setting in a week of case lid 1 edge.Outward flange 13 and case lid 1 connect formation concave structure.Convex
Edge 12 is arranged in spill.Inward flange 12 is connected section with outward flange 13 with case lid 1 and becomes f shape.Inward flange 12 and outward flange 13 it
Between be provided with interval.Inward flange 12 be arranged in parallel along outward flange for 13 1 weeks.Embedded flange 83 embed inward flange 12 and outward flange 13 it
Between.Outward flange 13 end face is crimped with sealing ring 81.Reduction case 8 is tightly connected into cavity body structure with case lid 1.Case lid 1 is provided with
The fixed station 11 of convex inner walls.Fixed station 11 is connected with optoelectronic transceivers 2.Optoelectronic transceivers 2 include optical transmitting set 21 and light connects
Receive device 22.Fixed station 11 is provided with connecting hole.Connecting hole insertion fixed station 11 upper and lower surface.Connecting hole axis vertical base plate 84.
Optical transmitting set 21 and optical receiver 22 are located at connection in the hole and are arranged symmetrically with connecting hole axis.Optoelectronic transceivers 2 are to fixed station
The distance of 11 end faces is h.Optical transmitting set 21 and optical receiver 22 are towards base plate 84.Fixed station 11 end face to the distance of base plate 84 is
h.H is three to five times of h, and the present embodiment h is five times of h.Optoelectronic transceivers 2 pass through connecting wire from connecting hole upper end draw with
Gas meter controller (not shown) connects.Above optoelectronic transceivers 2, by glue, optoelectronic transceivers 2 are fixed simultaneously with connecting hole
It is tightly connected hole.Reduction case 8 side wall is connected with guide pin bushing 4.Guide pin bushing 4 is tubular.Guide pin bushing 4 bottom is reduction case 8 side wall.
The inner chamber of guide pin bushing 4 is provided with inner sleeve 41.It is hollow out chamber between inner sleeve 41 and guide pin bushing 4 inwall.Hollow out cavity ring was around inner sleeve 41 side wall one week.
Inner sleeve 41 one end is fixed with guide pin bushing 4 bottom, and the other end is hanging.Inner sleeve 41 is provided with the pilot hole with reduction case 8 inner space.
Pilot hole insertion inner sleeve 41 both ends of the surface.Guide pin bushing 4 may move and is connected with valve rod.Valve rod is located at fixed station 11 and reduction case 8
Between base plate 84.Valve rod is the list structure that cuboid and cylinder are formed by connecting.The cuboid of valve rod is tooth bar 31, cylinder is even
Bar 32.The flank of tooth of tooth bar 31 is in transmission connection with the gear (not shown) in reduction case 8.The downside of tooth bar 31 and base plate
84 is close.The downside of tooth bar 31 is parallel with base plate 84.One end of tooth bar 31 is hanging, and the other end is fixing with connecting rod 32.Connecting rod 32
With the guiding interporal lacuna cooperation in inner sleeve 41.Connecting rod 32 other end connects the jam pot cover (not shown) of gas meter, flow meter.Inner sleeve 41 end
It is connected with seal washer 7, bowl seal circle 6 and inner casing cover 5 in turn.The inner ring of seal washer 7 and bowl seal circle 6 and connecting rod 32
It is tightly connected, the outer ring of seal washer 7 and bowl seal circle 6 is connected with guide pin bushing 4 inner wall sealing.The left surface of seal washer 7 with
The end face of inner sleeve 41 free end is adjacent to.The left surface of bowl seal circle 6 is adjacent to the right flank of seal washer 7.5 one-tenth bowls of inner casing cover
Shape, outer wall is provided with screw thread.The cavity wall of inner casing cover 5 is adjacent to the right flank of bowl seal circle 6.Inner casing cover 5 and inner sleeve 41 screw thread
Connect.
Fig. 1 represents Gas meter valve door closure state.Fixed station 11, case lid 1 and reduction case 8 form extinction room 82.Gu
Determine platform 11 lateral wall, case lid 1 inner surface, reduction case 8 connects the side wall inner surfaces of guide pin bushing 4 and base plate 84 upper surface encloses shape
Become extinction room 82.Extinction room 82 surface is provided with light-absorption layer.Light-absorption layer is the dark crude layer in surface, light absorption paint or extinction pad pasting.
Fixed station 11 end and the light inlet 85 of tooth bar 31 end formation extinction room 82.
As shown in Figures 4 and 5, Fig. 4 represents that gas meter valve opens the state that puts in place.The upper side of tooth bar 31 is shiny surface.Tooth
The upper side of bar 31 is provided with reflector layer.Reflector layer is surface light color bright layer, reflecting coating or the reflective pad pasting of tooth bar 31 itself.
Thickness between the downside of tooth bar 31 and upper side is slightly less than h.The upper surface of tooth bar 31 is close with fixed station 11 end.Connect
In the hole wall is provided with light-absorption layer, and the upper table of connecting hole and tooth bar 31 forms light office for incoming and outgoing mail 23.Optical transmitting set 21 and optical receiver 22 set
Put in light office for incoming and outgoing mail 23.Adjustment optical transmitting set 21 and optical receiver 22 angle are so that the light that sends of optical transmitting set 21 is through tooth
The upper side reflection of bar 31 is received by optical receiver 22.
Dotted line in Fig. 2 and 5 represents light path, and arrow represents the direction that light is propagated.Gas meter, flow meter valve opening, travelling gear rotating band
Carry-over bar 31 is moved to the left, and connecting rod 32 drives jam pot cover to leave valve.When tooth bar 31 moves to below fixed station 11, light inlet 85 closes
Close, light office for incoming and outgoing mail 23 is formed.The upper side of the light directive tooth bar 31 that optical transmitting set 21 sends, anti-through the upper side of tooth bar 31
Penetrate, reflected light is received by optical receiver 22.Optical receiver 22 certain time can receive reflected light, gas meter controller
Judge that jam pot cover valve opening puts in place.Gas meter, flow meter closes valve, and travelling gear rotarily drives tooth bar 31 and moves right, and connecting rod 32 drives jam pot cover to close
Valve.When tooth bar 31 translates out below fixed station 11, the light inlet of fixed station 11 end and tooth bar 31 end formation extinction room 82
85.The light directive base plate 84 that optical transmitting set 21 sends, enters extinction room 82 through base plate 84 reflected light by light inlet 85.Light connects
Receive device 22 and can not receive reflected light.Optical receiver 22 certain time can not receive reflected light, and gas meter controller is sentenced
Determine jam pot cover and close valve.
Claims (9)
1. a kind of gas meter, flow meter valve opening based on photoelectric reflection technology to level detecting apparatus it is characterised in that: it includes being tightly connected
Become reduction case (8) and the case lid (1) of cavity body structure, described case lid (1) is provided with the fixed station (11) of convex inner walls, fixed station
(11), case lid (1) and reduction case (8) form extinction room (82), and described reduction case (8) side wall is connected with guide pin bushing (4),
Guide pin bushing (4) may move and is connected with valve rod, and valve rod is located between fixed station (11) and the base plate (84) of reduction case (8), described
Fixed station (11) is connected with optoelectronic transceivers (2).
2. the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 to level detecting apparatus it is characterised in that:
Described fixed station (11) is provided with connecting hole, connecting hole axis vertical base plate (84), and described optoelectronic transceivers (2) include light transmitting
Device (21) and optical receiver (22), optical transmitting set (21) and optical receiver (22) are located at and connect in the hole and with connecting hole axis pair
Claim arrangement.
3. the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 to level detecting apparatus it is characterised in that:
Described valve rod is the list structure that cuboid and cylinder are formed by connecting, and cuboid is tooth bar (31), cylinder is connecting rod (32), tooth bar
(31) downside is close with base plate (84), and the upper side of tooth bar (31) is provided with reflector layer.
4. to level detecting apparatus, its feature exists the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 and 2
In: the distance of described optoelectronic transceivers (2) to described fixed station (11) end face is h, and fixed station (11) end face is to base plate (84)
Distance is h, and h is three to five times of h.
5. to level detecting apparatus, its feature exists the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 or 3
It is provided with light-absorption layer in: extinction room (82) surface, what fixed station (11) end and tooth bar (31) end formed extinction room (82) enters light
Mouth (85).
6. to level detecting apparatus, its feature exists the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 or 3
In: the upper surface of tooth bar (31) is close with fixed station (11) end, and connecting hole inwall is provided with light-absorption layer, connecting hole and tooth bar (31)
Upper table form light office for incoming and outgoing mail (23).
7. to level detecting apparatus, its feature exists the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 and 3
In: guide pin bushing (4) is provided with inner sleeve (41) for tubular inner chamber, is hollow out chamber between inner sleeve (41) and guide pin bushing (4) inwall, and inner sleeve (41) sets
There is the pilot hole with reduction case (8) inner space, pilot hole is matched with connecting rod (32), and inner sleeve (41) end is sequentially connected
Have seal washer (7), bowl seal circle (6) and inner casing cover (5), seal washer (7), bowl seal circle (6) respectively with guide pin bushing
(4), connecting rod (32) is tightly connected, and inner casing cover (5) is threadeded with inner sleeve (41).
8. the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 to level detecting apparatus it is characterised in that:
Described case lid (1) edge is provided with inward flange (12) and outward flange (13), inward flange (12) and the evagination of raised case lid (1) inner surface
Edge (13) is connected section and becomes f shape with case lid (1).
9. to level detecting apparatus, its feature exists the gas meter, flow meter valve opening based on photoelectric reflection technology according to claim 1 and 8
In: reduction case (8) open end is provided with the embedded flange (83) of raised end surface, is provided with close outside embedded flange (83)
Sealing groove, seal groove is embedded with sealing ring (81), and embedded flange (83) embeds between inward flange (12) and outward flange (13), outward flange
(13) crimp with sealing ring (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678987.1A CN106370250B (en) | 2016-08-17 | 2016-08-17 | Based on the gas meter, flow meter valve opening of photoelectric reflection technology to level detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678987.1A CN106370250B (en) | 2016-08-17 | 2016-08-17 | Based on the gas meter, flow meter valve opening of photoelectric reflection technology to level detecting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106370250A true CN106370250A (en) | 2017-02-01 |
| CN106370250B CN106370250B (en) | 2019-09-20 |
Family
ID=57878915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678987.1A Active CN106370250B (en) | 2016-08-17 | 2016-08-17 | Based on the gas meter, flow meter valve opening of photoelectric reflection technology to level detecting apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN106370250B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2531193Y (en) * | 2002-02-09 | 2003-01-15 | 天津市天飞高科技发展有限公司 | Industrial electric ball valve with on-off positioning feedback mechanism |
| CN2568905Y (en) * | 2002-08-27 | 2003-08-27 | 天津市天飞高科技发展有限公司 | Positioning regulation feedback mechanism of electric regulating valve |
| JP2005140034A (en) * | 2003-11-07 | 2005-06-02 | Keihin Corp | Home position resetting device for electronic control valve |
| CN1702361A (en) * | 2005-02-04 | 2005-11-30 | 华南理工大学 | Safety valve with on-line detection function and detection system therefor |
| CN201540132U (en) * | 2009-08-18 | 2010-08-04 | 上海华通企业集团有限公司 | Gas meter provided with control valve with switch in-place detection function |
| CN201600326U (en) * | 2009-10-27 | 2010-10-06 | 西安盛赛尔电子有限公司 | Laser sampling smoke detecting chamber |
| US20130134340A1 (en) * | 2011-11-25 | 2013-05-30 | Eric Tsou | Pneumatic control device operated by one hand |
| CN103161988A (en) * | 2013-03-15 | 2013-06-19 | 陕西科技大学 | High-precision proportional valve comprising angular displacement amplifying mechanism |
| CN103697213A (en) * | 2013-12-23 | 2014-04-02 | 新乡市平原工业滤器有限公司 | Electronic control pressure regulating valve assembly |
| CN103794254A (en) * | 2012-10-30 | 2014-05-14 | 波凯特有限公司 | Device for indicating the position of a valve spindle |
| CN203686297U (en) * | 2013-12-23 | 2014-07-02 | 新乡市平原工业滤器有限公司 | Electric control pressure adjusting valve assembly |
-
2016
- 2016-08-17 CN CN201610678987.1A patent/CN106370250B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2531193Y (en) * | 2002-02-09 | 2003-01-15 | 天津市天飞高科技发展有限公司 | Industrial electric ball valve with on-off positioning feedback mechanism |
| CN2568905Y (en) * | 2002-08-27 | 2003-08-27 | 天津市天飞高科技发展有限公司 | Positioning regulation feedback mechanism of electric regulating valve |
| JP2005140034A (en) * | 2003-11-07 | 2005-06-02 | Keihin Corp | Home position resetting device for electronic control valve |
| CN1702361A (en) * | 2005-02-04 | 2005-11-30 | 华南理工大学 | Safety valve with on-line detection function and detection system therefor |
| CN201540132U (en) * | 2009-08-18 | 2010-08-04 | 上海华通企业集团有限公司 | Gas meter provided with control valve with switch in-place detection function |
| CN201600326U (en) * | 2009-10-27 | 2010-10-06 | 西安盛赛尔电子有限公司 | Laser sampling smoke detecting chamber |
| US20130134340A1 (en) * | 2011-11-25 | 2013-05-30 | Eric Tsou | Pneumatic control device operated by one hand |
| CN103794254A (en) * | 2012-10-30 | 2014-05-14 | 波凯特有限公司 | Device for indicating the position of a valve spindle |
| CN103161988A (en) * | 2013-03-15 | 2013-06-19 | 陕西科技大学 | High-precision proportional valve comprising angular displacement amplifying mechanism |
| CN103697213A (en) * | 2013-12-23 | 2014-04-02 | 新乡市平原工业滤器有限公司 | Electronic control pressure regulating valve assembly |
| CN203686297U (en) * | 2013-12-23 | 2014-07-02 | 新乡市平原工业滤器有限公司 | Electric control pressure adjusting valve assembly |
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| Publication number | Publication date |
|---|---|
| CN106370250B (en) | 2019-09-20 |
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Address after: 325600 No. 291 Wei17 Road, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province Applicant after: Limited by Share Ltd group Address before: 325600 Yueqing Economic Development Zone, Wenzhou, No. seventeen weft Road No. 261, Zhejiang Applicant before: GoldCard High Technology Co., Ltd. |
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