CN105300480A - Device and method for liquid level height measurement of continuous casting tundish - Google Patents
Device and method for liquid level height measurement of continuous casting tundish Download PDFInfo
- Publication number
- CN105300480A CN105300480A CN201510681561.7A CN201510681561A CN105300480A CN 105300480 A CN105300480 A CN 105300480A CN 201510681561 A CN201510681561 A CN 201510681561A CN 105300480 A CN105300480 A CN 105300480A
- Authority
- CN
- China
- Prior art keywords
- continuous casting
- hole
- liquid level
- level height
- casting tundish
- 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
Landscapes
- Level Indicators Using A Float (AREA)
- Continuous Casting (AREA)
Abstract
The invention provides a device and a method for liquid level height measurement of a continuous casting tundish. The measurement device comprises a tray, a positioning disk, a floating ball, a range pole and a scale, wherein the tray is shaped like a plate and used to be laid on a cover of the tundish, and a first through hole is disposed in the center area of the tray; the positioning disk is shaped like a plate and stably covers the first through hole of the try and around the first through hole, a second through hole is disposed in the center area of the positioning disk, and the diameter of the first through hole is bigger than the diameter of the second through hole; the floating ball is spherical and used to be placed and float on the molten steel surface of the tundish; the range pole is shaped like a rod and disposed vertically, the lower end passes through the second through hole and the first through hole, and the range pole is connected to the floating ball; and the scale is equipped with scale marks along the length direction and disposed vertically, and the lower end is fixed on the tray and close to the range pole. The device and the method for the liquid level height measurement of the continuous casting tundish provided by the invention can measure a liquid level height in the tundish at any time in order to visually and accurately master a molten steel liquid level of the tundish and guide normal productive operations.
Description
Technical field
The present invention relates to metallurgical production continuous casting technology field, particularly a kind of continuous casting tundish liquid level height measuring device and method thereof.
Background technology
In continuous casting manufacturing technique, tundish metallurgy function mainly comprises Large Copacity, high liquid level (HLL), turbulent flow suppression etc., the tundish of Large Copacity, high liquid level (HLL) obviously increases the mean residence time of molten steel in tundish, safeguard that pouring basket liquid level is stablized, reduce unstable state factor to the impact of molten steel cleanness, reach the object of effective removal of inclusions.
At present, the detection method of pouring basket liquid level height mainly contains: artificial visual inspection, manually measurement, tundish are weighed.Owing to there being the coverture such as one deck Tundish Slag, one deck rice husk above Metal in Tundish, cause the inaccurate error of artificial visual inspection larger; Adopt the artificial method using in rod iron insertion tundish, then measure rod iron height, inconvenient operation, survey frequency is lower, and needs workman's erect-position in tundish closer location, dangerous; Tundish weighing measurement is the gross weight of molten steel in tundish, Tundish Slag, coverture, can only indirectly reflect pouring basket liquid level general height, and equipment investment maintenance cost is higher.
Visible, substantially all there is inconvenient operation, inaccurate drawback in all multi-methods of current pouring basket liquid level elevation carrection.
Summary of the invention
The object of the present invention is to provide a kind of continuous casting tundish liquid level height measuring device and method thereof, there is the problems such as Metal in Tundish liquid level is not easily measured, precision is not high to solve prior art.
In order to solve the problem, technical scheme provided by the invention is as follows:
A kind of continuous casting tundish liquid level height measuring device, it comprises: pallet, and in tabular, for being laid on tundish cover, and the central area of described pallet is provided with the first through hole; Positioning disk, in tabular, on described first through hole stably covering described pallet and around described first through hole, and the central area of described positioning disk is provided with the second through hole, and the diameter of described first through hole is greater than the diameter of described second through hole; Ball float, in spherical, for placing, swimming in Metal in Tundish surface; Mark post, in shaft-like, is vertically arranged, and lower end, through described second through hole, the first through hole, is connected with described ball float; Scale, is alongst provided with scale mark, vertically arranges, and lower end is fixed on described pallet also near described mark post.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, described tray upper surface is provided with annular protrusion, and described positioning disk embeds in described annular protrusion.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, described ball float is corundum or graphitic carbon fire resistive material.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, the lower end of described ball float and described mark post is threaded.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, described ball float is compressing.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, described ball float is embedded with the steel loop arranging internal thread, and described steel loop protrudes from described ball float surface, and the lower end of described mark post is threaded with described steel loop.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, described pallet, positioning disk are steel plate material, and described mark post is steel pipe material.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, the thickness of described pallet is greater than described positioning disk.
Preferably, in above-mentioned continuous casting tundish liquid level height measuring device, also comprise: pointer, be horizontally disposed with, the upper end of described mark post is fixed in one end, and the other end points near described scale or points to the surface of described scale.
A kind of continuous casting tundish liquid level height measurement method, adopt aforesaid device to continuous casting tundish liquid level height measuring device, it comprises: demarcating steps, above measurement through hole pallet centering being placed on the clad of continuous casting production, scale is made to be fixed on pallet, then ball float and mark post are connected to form measuring element, and make described measuring element in vertical mode successively by the first through hole on pallet and described measurement through hole, put into continuous casting production bag until contact with described continuous casting tundish bottom, to be arranged on described mark post and the pointer regulation slided up and down along described mark post to 0, scale, then described pointer is fixed, measuring process, after injecting molten steel in continuous casting tundish bag, be measuring height by the height mark indicated by described pointer, measuring height is continuous casting tundish liquid level height.
Analyze known, the present invention can measure liquid level in tundish constantly, is convenient to intuitive and accurate grasp Metal in Tundish liquid level situation, instructs normal production operation, keeps the operation of tundish high liquid level (HLL), can improve the degree of purity of molten steel, promote slab quality.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention and the structural representation being applied to tundish thereof;
Fig. 2 is the plan structure schematic diagram of the ball float of the embodiment of the present invention;
Fig. 3 is the plan structure schematic diagram of the pallet of the embodiment of the present invention;
Fig. 4 is the plan structure schematic diagram of the positioning disk of the embodiment of the present invention;
Fig. 5 is the main TV structure schematic diagram of the ball float of the embodiment of the present invention;
Fig. 6 is the main TV structure schematic diagram of the scale of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
As shown in Figure 1, the embodiment of the present invention comprises ball float 2, pallet 3, positioning disk 4, mark post 5, scale 6, pointer 7.In order to the mechanism of clearer description the present embodiment, Fig. 1 also show the matching relationship of the present embodiment when applying and between tundish 11, and shows the molten steel 10 in tundish 11.
Specifically, ball float 2 is in spherical, surperficial for the molten steel 10 placing, swim in tundish 11.Preferably, ball float 2 is corundum or graphitic carbon fire resistive material, and for utilizing such material compressing by pressing process.Be connected in order to realize between ball float 2 with mark post 5 quick, ball float 2 is embedded with the steel loop arranging internal thread, and steel loop protrudes from ball float 2 surface, and the lower end of mark post 5 is threaded with steel loop.Further specifically, as shown in Figure 1, Figure 2, Figure 5, the top of ball float 2 is provided with a column 22, and namely steel loop is embedded in this column 22 in advance, or this column 22 is steel loop.That is the internal thread hole of column 22 core 21 is formed by the internal thread of this steel loop.In other examples, the middle part of column can be internal thread steel loop, and the outside material of column is the same with ball float material, is also fire resistive material, and outside and the ball float of column are integrally formed.Column can, when pouring basket liquid level fluctuates large, prevent molten steel from filling with in internal thread steel loop.
As shown in Figure 1, Figure 3, pallet 3 is in tabular, and preferred rounded tabular, it is for being laid on the clad 12 of tundish 11, and when practical application, the central area of clad 12 is provided with measures through hole 120, and namely pallet 3 is covered on this.The central area of pallet 3 is provided with the first through hole 30, first through hole 30 is corresponding with measurement through hole about 120, best axis is consistent, the diameter of the first through hole 30 and the diameter of measurement through hole 120 are all greater than the external diameter of ball float, can enter in middle handbag to make ball float through the first through hole 30 and measurement through hole 120.
As Figure 1 and Figure 4, positioning disk 4 is in tabular, preferred rounded platy structure, on its first through hole 30 stably covering pallet 3 and around the first through hole 30, and the central area of its positioning disk is provided with the second through hole 41, the diameter of the first through hole 30 is greater than the diameter of the second through hole 41, because the diameter of the second through hole 41 is mainly for moving up and down of mark post 5 provides guide effect, its diameter is slightly larger than the external diameter of mark post 5.
As shown in Figure 1, mark post 5, in shaft-like, is vertically arranged, and lower end is threaded with ball float 2 through after the second through hole 41, first through hole 30, third through-hole 120.
As shown in Figure 6, scale 6 is alongst provided with scale mark, vertically arranges, and parallel with mark post 5.Its lower end is fixed on pallet 3 also near mark post 5.
In order to the position of positioning disk 4 on simple and stable restriction pallet 3, as shown in the figure, pallet 3 upper surface is provided with annular protrusion 31, and positioning disk 4 embeds in annular protrusion 31, preferred orientation dish 4 embeds in the annular of annular protrusion 31 formation, and the outer wall of positioning disk 4 contacts with the inwall of annular protrusion 31.
In the present embodiment, pallet 3, positioning disk 4 are steel plate material.Further, the thickness of pallet 3 is greater than positioning disk 4.
In order to observe the position on mark post 5 top more accurately and in order to accuracy of reading, the present embodiment also comprises pointer 7, and it is horizontally disposed with, in arrow shaped, large end is fixed on the upper end of mark post 5, the most advanced and sophisticated surface pointed near scale 6 or point to scale 6.In order to reduce mark post 5, pointer 7 own wt to the pressure influence of ball float 2, improve precision, the mark post 5 of the present embodiment is steel pipe material, and pointer 7 structure in the form of sheets, can be made up of sheetmetal.
Each part dimension specification of the present embodiment should be determined according to specific needs, and such as in one embodiment, measurement through hole 120 diameter on tundish 11 clad 12 is 120mm; Pallet 3 is processed with upper steel plate by thickness 40mm, and the diameter of the first through hole 30 is 400mm; Positioning disk 4 is processed by the steel plate of thickness 20mm, and the diameter of the second through hole 41 is 150mm; Mark post 5 is processed by the steel pipe of diameter 18mm, thickness 5mm, lower end external threading; Pointer 7 utilizes sheet iron to shear; Scale 6 uses thickness 20mm steel plate to process, and width is 40mm, can also be other values, is of convenient length (being namely greater than the degree of depth of tundish and the thickness sum of clad); As for ball float 2, corundum, graphitic carbon fire resistive material can be used compressing, and diameter is approximately 100mm, compressing before in ball float pre-buried internal diameter 18mm internal thread steel loop.
Before using the present embodiment, time in tundish without molten steel, above the measurement through hole 120 pallet 3 centering being placed on tundish 11 clad 12, connect ball float 2 and mark post 5, ball float 2 is fallen in tundish 11 until contact with at the bottom of middle handbag by pallet 3 with mark post 5, positioning disk 3 falls in the location annular protrusion 31 of pallet 3 through mark post 5, scale 6 is fixed on pallet 3, pointer 7 along mark post axially lower slider be fixed on mark post 5, the adjustment position of pointer on mark post 5 makes 0 bit alignment of itself and scale, then fixed pointers.Inject in tundish molten steel or tundish outbound flow out molten steel time, ball float 2 swims on the molten steel 10 of tundish 11.
During measurement, ball float 2, along with the change of molten steel 10 liquid level, drives mark post 5 and pointer 7 upper and lower displacement, pointer 7 indicator scale 6, artificial visual inspection instruction numerical value, convenient grasp tundish 11 liquid level situation.
In other examples, when having molten steel in tundish, above the measurement through hole 120 pallet 3 centering being placed on tundish 11 clad 12, connect ball float 2 and mark post 5, fall into tundish 11 in until with middle handbag at the bottom of contact with mark post 5 by pallet 3 by ball float 2, positioning disk 3 falls in the location annular protrusion 31 of pallet 3 through mark post 5, and scale 6 is fixed on pallet 3, pointer is fixed on mark post 5 upper end, and now pointer pointed location on scale is altitude datum.Inject in tundish molten steel or tundish outbound flow out molten steel time, ball float 2 is along with the change of molten steel 10 liquid level, drive mark post 5 and pointer 7 upper and lower displacement, position on pointer 7 indicator scale 6 is measuring height, artificial macroscopic instruction numerical value deducts altitude datum and is pouring basket liquid level change in elevation, also conveniently can grasp tundish 11 liquid level situation.
To sum up, the present invention has multiple advantages, such as, realizes the monitoring constantly of pouring basket liquid level height, simple to operate, cost is low, safe and reliable.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (10)
1. a continuous casting tundish liquid level height measuring device, is characterized in that, comprising:
Pallet, in tabular, for being laid on the clad of continuous casting production, and the central area of described pallet is provided with the first through hole;
Positioning disk, in tabular, on described first through hole stably covering described pallet and around described first through hole, and the central area of described positioning disk is provided with the second through hole, and the diameter of described first through hole is greater than the diameter of described second through hole;
Ball float, in spherical, for placing, swimming in Metal in Tundish surface;
Mark post, in shaft-like, is vertically arranged, and lower end, through described second through hole, the first through hole, is connected with described ball float;
Scale, is alongst provided with scale mark, vertically arranges, and lower end is fixed on described pallet also near described mark post.
2. continuous casting tundish liquid level height measuring device according to claim 1, is characterized in that, described tray upper surface is provided with annular protrusion, and described positioning disk embeds in described annular protrusion.
3. continuous casting tundish liquid level height measuring device according to claim 1, is characterized in that, described ball float is corundum or graphitic carbon fire resistive material.
4. continuous casting tundish liquid level height measuring device according to claim 1, is characterized in that, the lower end of described ball float and described mark post is threaded.
5. continuous casting tundish liquid level height measuring device according to claim 3, is characterized in that, described ball float is compressing.
6. continuous casting tundish liquid level height measuring device according to claim 5, is characterized in that, described ball float is embedded with the steel loop arranging internal thread, and described steel loop protrudes from described ball float surface, and the lower end of described mark post is threaded with described steel loop.
7. continuous casting tundish liquid level height measuring device according to claim 1, is characterized in that, described pallet, positioning disk are steel plate material, and described mark post is steel pipe material.
8. continuous casting tundish liquid level height measuring device according to claim 1, is characterized in that, the thickness of described pallet is greater than described positioning disk.
9., according to the arbitrary described continuous casting tundish liquid level height measuring device of claim 1-8, it is characterized in that, also comprise:
Pointer, is horizontally disposed with, and the upper end of described mark post is fixed in one end, and the other end points near described scale or points to the surface of described scale.
10. use continuous casting tundish liquid level height measuring device in claim 1 ~ 9 described in arbitrary claim to a method for continuous casting tundish liquid level elevation carrection, it is characterized in that, described method comprises:
Demarcating steps, above measurement through hole pallet centering being placed on the clad of continuous casting production, scale is made to be fixed on pallet, then ball float and mark post are connected to form measuring element, and make described measuring element in vertical mode successively by the first through hole on pallet and described measurement through hole, put into continuous casting production until contact with described continuous casting tundish bottom, will to be arranged on described mark post and the pointer regulation slided up and down along described mark post to 0, scale, then fix described pointer; Measuring process, after injecting molten steel in continuous casting tundish bag, be measuring height by the height mark indicated by described pointer, measuring height is continuous casting tundish liquid level height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681561.7A CN105300480A (en) | 2015-10-19 | 2015-10-19 | Device and method for liquid level height measurement of continuous casting tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681561.7A CN105300480A (en) | 2015-10-19 | 2015-10-19 | Device and method for liquid level height measurement of continuous casting tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105300480A true CN105300480A (en) | 2016-02-03 |
Family
ID=55198003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510681561.7A Pending CN105300480A (en) | 2015-10-19 | 2015-10-19 | Device and method for liquid level height measurement of continuous casting tundish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105300480A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180961A (en) * | 2017-12-26 | 2018-06-19 | 周航洋 | A kind of pond level measurement device |
| CN109990747A (en) * | 2019-04-01 | 2019-07-09 | 山东钢铁集团日照有限公司 | A kind of hot-metal bottle tank bottom height detection method and its implement system |
| CN110772355A (en) * | 2019-11-05 | 2020-02-11 | 武汉轻工大学 | Pig is with storing up seminal device |
| CN112228544A (en) * | 2020-11-04 | 2021-01-15 | 赤峰金剑铜业有限责任公司 | Improved conventional gear lubricating system of ball mill |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1080762A (en) * | 1996-09-06 | 1998-03-31 | Nkk Corp | Method for predicting flow-out of slag in molten steel ladle and device therefor |
| CN202195861U (en) * | 2011-07-28 | 2012-04-18 | 何志伟 | Multi-interface liquid level measurement device installed at top of liquid storage tank |
| CN202362054U (en) * | 2011-11-25 | 2012-08-01 | 安徽桑铌科技股份有限公司 | Electrical liquid level transmitter with floating ball therein |
| CN102728802A (en) * | 2012-03-29 | 2012-10-17 | 鞍钢股份有限公司 | Method for measuring liquid level of tundish |
| CN202667579U (en) * | 2012-06-14 | 2013-01-16 | 鞍钢股份有限公司 | Buoy for marking height of liquid steel of tundish |
| CN204007790U (en) * | 2014-08-29 | 2014-12-10 | 武汉钢铁(集团)公司 | For the measurement mechanism of surplus molten steel in continuous casting tundish |
| CN205066887U (en) * | 2015-10-19 | 2016-03-02 | 山东钢铁股份有限公司 | Package liquid level measuring device in middle of continuous casting |
-
2015
- 2015-10-19 CN CN201510681561.7A patent/CN105300480A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1080762A (en) * | 1996-09-06 | 1998-03-31 | Nkk Corp | Method for predicting flow-out of slag in molten steel ladle and device therefor |
| CN202195861U (en) * | 2011-07-28 | 2012-04-18 | 何志伟 | Multi-interface liquid level measurement device installed at top of liquid storage tank |
| CN202362054U (en) * | 2011-11-25 | 2012-08-01 | 安徽桑铌科技股份有限公司 | Electrical liquid level transmitter with floating ball therein |
| CN102728802A (en) * | 2012-03-29 | 2012-10-17 | 鞍钢股份有限公司 | Method for measuring liquid level of tundish |
| CN202667579U (en) * | 2012-06-14 | 2013-01-16 | 鞍钢股份有限公司 | Buoy for marking height of liquid steel of tundish |
| CN204007790U (en) * | 2014-08-29 | 2014-12-10 | 武汉钢铁(集团)公司 | For the measurement mechanism of surplus molten steel in continuous casting tundish |
| CN205066887U (en) * | 2015-10-19 | 2016-03-02 | 山东钢铁股份有限公司 | Package liquid level measuring device in middle of continuous casting |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180961A (en) * | 2017-12-26 | 2018-06-19 | 周航洋 | A kind of pond level measurement device |
| CN109990747A (en) * | 2019-04-01 | 2019-07-09 | 山东钢铁集团日照有限公司 | A kind of hot-metal bottle tank bottom height detection method and its implement system |
| CN110772355A (en) * | 2019-11-05 | 2020-02-11 | 武汉轻工大学 | Pig is with storing up seminal device |
| CN112228544A (en) * | 2020-11-04 | 2021-01-15 | 赤峰金剑铜业有限责任公司 | Improved conventional gear lubricating system of ball mill |
| CN112228544B (en) * | 2020-11-04 | 2022-12-27 | 赤峰金通铜业有限公司 | Improved conventional gear lubricating system of ball mill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105300480A (en) | Device and method for liquid level height measurement of continuous casting tundish | |
| US9631958B2 (en) | Device for measuring flow rate of steel melt near a surface of the steel melt | |
| CN201848510U (en) | Tundish molten steel temperature measuring and liquid level monitoring device | |
| US9630242B2 (en) | Device and method for continuously measuring flow rate near liquid steel surface | |
| CN103962524B (en) | Mould liquid level calibration tool | |
| He et al. | A novel principle for molten steel level measurement in tundish by using temperature gradient | |
| CN205066887U (en) | Package liquid level measuring device in middle of continuous casting | |
| CN104043800B (en) | Continuous cast mold slag forecast and Metal in Tundish measuring tonnage tracking means | |
| CN107144595B (en) | Cast aluminum alloy thermal analysis sampling device with reusable thermocouple and sampling cup | |
| CN201561730U (en) | Metering scale | |
| CN206269935U (en) | A kind of New-type cooling water tower temperature measurement cylinder | |
| US4150974A (en) | Indication of levels in receptacles | |
| CN210774239U (en) | Metering device for oil product position | |
| CN220621092U (en) | Cast-in-situ floor thickness control and detection device with adjustable level and height | |
| CN203526488U (en) | Device capable of rapidly and accurately measuring thickness of crystallizer melt cinder | |
| CN207991257U (en) | Molten metal liquid level emasuring device in smelting furnace | |
| CN220794073U (en) | VOD ladle headroom measuring device | |
| CN218425480U (en) | Device for measuring immersion depth of immersion type water gap | |
| CN214460719U (en) | Simple and easy detection device of pile foundation sediment thickness | |
| GB1600310A (en) | Indication of levels in receptacles | |
| CN205270783U (en) | Billet casting crystallizer melt cinder thickness measurement device | |
| CN210833336U (en) | Concrete floor pours thickness measurement device | |
| CN202984648U (en) | Hot metal ladle with tension induction weighing system | |
| CN207563705U (en) | A kind of device for measuring steel-making basket pouring molten steel surplus | |
| CN218583967U (en) | Fully-mechanized mining working face hydraulic support straight line and angle measuring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Da Inventor after: Qiao Ming Inventor after: Wei Yisheng Inventor after: Liu Zhimin Inventor after: Zhang Zhaoping Inventor after: Sun Cuihua Inventor after: Wang Yuchun Inventor after: Gou Xinyong Inventor after: Ma Jinying Inventor after: Zhang Xuemin Inventor after: Ning Wei Inventor after: Zhao Shenggong Inventor after: Wang Naiqiang Inventor after: Liang Jingyue Inventor after: Miao Jinpeng Inventor before: Guo Da Inventor before: Liu Zhimin Inventor before: Zhang Zhaoping Inventor before: Sun Cuihua Inventor before: Wang Yuchun Inventor before: Zhang Xuemin Inventor before: Ning Wei Inventor before: Zhao Shenggong Inventor before: Wang Naiqiang Inventor before: Liang Jingyue Inventor before: Miao Jinpeng Inventor before: Qiao Ming Inventor before: Wei Yisheng |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160203 |