CN208155483U - A kind of novel melting metal liquid temperature continuous measuring device - Google Patents
A kind of novel melting metal liquid temperature continuous measuring device Download PDFInfo
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- CN208155483U CN208155483U CN201820454427.2U CN201820454427U CN208155483U CN 208155483 U CN208155483 U CN 208155483U CN 201820454427 U CN201820454427 U CN 201820454427U CN 208155483 U CN208155483 U CN 208155483U
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Abstract
The utility model relates to the measurements of molten metal fluid temperature and flow control device.A kind of novel melting metal liquid temperature continuous measuring device, including temperature probe, temperature probe connect connecting screw, further include an outside protective pipe, outside protective pipe upper end opening, lower end is connected with a temperature-sensing element；The inside of outside protective pipe is fixed with attaching nut, and the inner draft tube of a both ends open is fixed with below attaching nut, and gap is equipped between inner draft pipe outer wall and the inner wall of outside protective pipe；The lower end of outside protective pipe is globoidal structure; globoidal structure is uniformly provided at least four air flue holes in a circumferential direction; the distance of air flue hole arrival end to temperature-sensing element bottom end is 50mm-150mm, and the angle of the central axis of the center line axis and outside protective pipe in air flue hole is 0-45 °.This patent measuring device has the response time fast, and thermometric is accurate, and has both flow control function, substantially reduces the use cost of user, realizes the automatic continuous quick temperature measurement of overall process.
Description
Technical field
The utility model relates to field of metallurgy, and in particular to the measurement of molten metal fluid temperature and molten steel flow control device.
Background technique
In metallurgical production process, need to monitor molten metal bath temperature continuous measurement.To molten metal bath body temperature
The continuous measurement monitoring of degree, it is significant to adjustment production technology, reduction energy consumption, raising product quality.
Chinese patent CN1333455A patent discloses a kind of temperature tube of continuous measurement of molten steel temperature more advanced at present,
Liquid steel temperature in continuous casting production continuously measures.The primary structure of the temperature tube is AL2O3,Graphite is main material
Outer tube and contain 99%AL2O3The inner tube composition open at one end, closed at one end of material, temperature measurement signal come from outside protective pipe
The radiation energy that bottom issues, reaction speed is slower, and there are biggish heat stagnations.Chinese publication 200720013908.1,
200920143429.0, the patents such as 201120053767.2,20072011415.4 using both ends open inner tube with it is open at one end
Outside protective pipe closed at one end, using the bottom end of outer tube as temperature-sensing element, entire outside protective pipe is same material, and bottom end
Thicker, thermal response time is promoted compared with Chinese patent, but also needs certain response time.
Meanwhile Chinese patent 200520090166.3 and Chinese patent 200520128792.7 disclose a kind of temperature tube,
Its inner tube both ends open, and give specific size and require and limit, but during practical thermometric, inner tube is too long to be will lead to
The Smoke of introducing reduces the temperature of temperature measuring point, and inner tube is too short to be will lead to internal flue dust and be not clean, and influences the accuracy of thermometric,
Therefore its length is not limited by outside protective pipe length, is designed a reasonable inner tube length, is substantially reduced the anti-thermal shock of inner tube
Performance requirement, while reducing cost, additionally it is possible to guarantee the accuracy of entire temp measuring system.
Finally, especially being existed by analysis at present about the patent of continuous temperature measuring device for molten and the service condition at scene
Continuous casting production technique, the outside protective pipe and flow control stopper of Thermometric Sensor for Liquid Steel belong to two devices, and molten steel is continuously surveyed
Warm spot can not judge the actual cast temperature of molten steel, therefore bring the increase of resource consumption, and be unfavorable for cast temperature
Accurate control, the raising of limiting metallurgy technological level.
Utility model content
The purpose of the utility model is to provide a kind of novel melting metal liquid temperature continuous measuring device, and it is simultaneous
Gu Gangshui flow control function, to solve at least one above technical problem.
The technical issues of the utility model is solved can be realized using following technical scheme：
A kind of novel melting metal liquid continuously measuring temperature and flow control device, including a molten metal fluid temperature measure
With temperature probe, the temperature probe is connected with the connecting screw of an internal openings, which is characterized in that further includes protecting outside one
Pipe, the outside protective pipe upper end opening, lower end is connected with a temperature-sensing element；
The inside of the outside protective pipe is fixed with an attaching nut matched with the connecting screw, under the attaching nut
Side is fixed with the inner draft tube of a both ends open；
The inner draft tube is located in the outside protective pipe, and the inner draft pipe outer wall and the outside protective pipe
Gap is equipped between inner wall；
The lower end of the outside protective pipe is a globoidal structure, and globoidal structure is needed according to molten steel flow control and set, institute
It states globoidal structure and is uniformly provided at least one air flue hole, air flue hole air inlet end to the temperature-sensing element in a circumferential direction
The distance of bottom end is 50mm-150mm, and the angle of the central axis of the center line axis and outside protective pipe in the air flue hole is 0-
45°。
The temperature probe is there are also one for accessing two gas source interfaces of cooling gas and inner draft.
Gas can be imported into the inside of outside protective pipe due to having prepared inner draft tube by this patent from gas source interface, right
Optical path inside outside protective pipe is purged, and is discharged from the air flue hole of bottom, ensure that the cleaning of optical path, and then significant
Temperature measurement accuracy is improved, while also meeting the ventilative technique requirement in metallurgy scene.
The globoidal structure of outside protective pipe can cooperate with the spout device at metallurgical scene, realize the flow control of molten metal liquid,
Substitution live stopper metallurgical at present.Air flue hole on outside protective pipe, can be used as the flow channel of gas.
Novel melting metal liquid temperature continuous measuring device further includes a signal processing system, the temperature probe connection
The signal processing system.
In use, firstly, by the connecting screw and connection of novel melting metal liquid continuously measuring temperature and flow control device
Nut connection；
Then, novel melting metal liquid continuously measuring temperature and the temperature-sensing element and outside protective pipe of flow control device are put into
In molten metal liquid, the temperature-sensing element issues heat radiation energy；
Then, the temperature probe of novel melting metal liquid continuously measuring temperature and flow control device is received from the sense
After the heat radiation energy of the sending of warm element, be converted to corresponding physical signal, and by the physical signal be transferred to it is described
The signal processing system of temperature probe connection, the signal processing system are obtained according to the physical signal analytical calculation received
The temperature of molten metal liquid out；
Meanwhile the gas source interface of the temperature probe of novel melting metal liquid temperature continuous measuring device accesses cooling gas
With inner draft gas, the cooling gas from temperature probe bottom be discharged, the inner draft gas by inner draft tube into
Enter inside the outside protective pipe, is then discharged from the air flue hole on the outside protective pipe.
The cooling gas is preferably argon gas, and inner draft gas is argon gas
The signal processing system can also connect a display instrument.So that user knows measurement knot by display instrument
Fruit.
The diameter in the air flue hole is 0.1mm-2mm, and the sectional area summation in each air flue hole is 2mm2-50mm2。
The temperature-sensing element in a tubular form, and upper end opening, lower end sealing.
The wall thickness of the temperature-sensing element is 2.5mm-4.5mm.The internal diameter of the temperature-sensing element is 12mm-22mm.
The temperature-sensing element part is exposed at outside the outside protective pipe, and the length of the exposed parts of the temperature-sensing element is
The ratio of the inner diameter values of 5mm-40mm, the length value of exposed parts and the temperature-sensing element encloses for 1.2-2.6.
The attaching nut is preferably embedded in the outside protective pipe.
There are distances between the attaching nut and the upper surface of the outside protective pipe, above the attaching nut
The Internal periphery of outside protective pipe part is in conical surface shape.
The maximum distance of the lower end surface of the inner draft tube to the lower end surface of the temperature-sensing element is 200mm-1000mm.
The inner draft tube is preferably the compound multi-layered composite pipe of ceramic layer, metal layer.
The temperature-sensing element is combined with the outside protective pipe, and compound method includes but is not limited to squeeze, bond, spiral shell
Line connection etc..
The outer surface of the temperature-sensing element is coated with antioxidant coating.
The outer surface of the outside protective pipe is coated with antioxidant coating.
The outside protective pipe, the inner draft tube are coaxial with one heart.After temperature probe insertion, i.e. connecting screw and connection
After nut connection, the temperature probe, the inner draft tube are coaxial with one heart.
The outer profile of the lower end of the connecting screw is in conical surface shape, and the conical surface that the lower end surface of the connecting screw is in
The conical surface concentric locating that Internal periphery with the outside protective pipe part being located above the attaching nut is in cooperates.
The Internal periphery of the upper end of the connecting screw can also be in conical surface shape.With with the temperature probe cone match.
It is provided with ring packing groove on the outside of the upper end of the connecting screw, is fixed in the ring packing groove close
Seal washer.High temperature resistant washer made of the preferred heat-resisting material of seal washer.The connecting screw by seal washer with
Temperature probe carries out gas circuit sealing.
Ring packing groove is provided on the outside of the upper end of the connecting screw preferably one or more.And
And any position of the upper end of the conical surface, centre, lower end can be located at.
Ring packing end face is provided on the inside of the upper end of the outside protective pipe, the ring packing end face is located at the company
The top of connected nut is fixed with seal washer in the ring packing end face.The preferred heat-resisting material of seal washer is made
High temperature resistant washer.The connecting screw realizes the sealing between outside protective pipe by squeezing seal washer.
Ring packing end face on the outside protective pipe preferably has one or more.And the conical surface can be located at
Upper end, centre, lower end any position.
Beneficial effect：This patent is by the wall thickness at restriction temperature-sensitive position, so that the reaction time greatly shortens, thermometric is accurate,
Failure rate is low；Secondly temperature measurement location with have greatly changed before, be more advantageous to and metallurgical technology accurately controlled.This patent
Measuring device has the response time fast, and thermometric is accurate, and has both molten steel flow control function, substantially reduces the use cost of user,
It realizes the automatic continuous quick temperature measurement of overall process, improves the use value of product, while facilitating the improvement and matter of site technique
The promotion of amount.In addition, the temperature measuring point of this patent product closer to crystallizer, more can directly react cast temperature, production is increased
The added value of product reduces total use cost.
Detailed description of the invention
Use state diagram when Fig. 1 is the utility model thermometric；
Use state diagram when Fig. 2 is the utility model thermometric and flow control；
Fig. 3 is the structural schematic diagram of the utility model outside protective pipe and temperature-sensing element；
Fig. 4 is a kind of structural schematic diagram of the utility model connecting screw；
Fig. 5 is the enlarged drawing of the utility model outside protective pipe and temperature-sensing element junction.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face, which combines to be specifically illustrating, is further described the utility model.
Referring to Fig.1,2,3,4 and 5, a kind of novel melting metal liquid temperature continuous measuring device, including a molten metal
Fluid temperature measurement temperature probe 6, it further includes an outside protective pipe that temperature probe 6, which is connected with the connecting screw of an internal openings,
2,2 upper end opening of outside protective pipe, lower end is connected with a temperature-sensing element 1；The inside of outside protective pipe 2 is fixed with one and matches with connecting screw
The attaching nut 4 of set is fixed with the inner draft tube 3 of a both ends open below attaching nut 4；Inner draft tube 3 is located at outer guarantor
In pillar 2, and gap is equipped between 3 outer wall of inner draft tube and the inner wall of outside protective pipe 2；The lower end of outside protective pipe 2 is
One globoidal structure 11, globoidal structure 11 are uniformly provided at least one air flue hole 12 in a circumferential direction, and 12 arrival end of air flue hole arrives
The distance of 1 bottom end of temperature-sensing element is 50mm-150mm, preferably 120mm, the center line axis in air flue hole 12 and the center of outside protective pipe 2
The angle of axis is 0-45 °, preferably 10 °.Temperature probe 6 there are also one for accessing two gas source interfaces of gas, respectively the
One air inlet 7, the second air inlet 8, two use simultaneously.This patent due to having prepared inner draft tube 3, can will all the way gas from
Gas source interface imported into the inside of outside protective pipe 2, purges to the optical path inside outside protective pipe 2, and from the air flue hole of bottom
Discharge, ensure that the cleaning of optical path, and then significantly improve temperature measurement accuracy, and colleague meets the requirement of metallurgical technology.Outer guarantor
The globoidal structure of pillar 2 can cooperate with the spout device at metallurgical scene, realize the flow control of molten metal liquid, substitute metallurgy at present
Live stopper.Air flue hole on outside protective pipe 2, can be used as the flow channel of gas.Novel melting metal liquid temperature is continuously surveyed
Measuring device further includes a signal processing system, 6 connection signal processing system of temperature probe.
In use, firstly, the connecting screw of novel melting metal liquid temperature continuous measuring device and attaching nut 4 are connected
It connects；Then, the temperature-sensing element 1 of novel melting metal liquid temperature continuous measuring device and outside protective pipe 2 are put into molten metal
In liquid, temperature-sensing element 1 issues heat radiation energy；Then, the thermometric of novel melting metal liquid temperature continuous measuring device is visited
After first 6 receive the heat radiation energy of the sending from temperature-sensing element 1, it is converted to corresponding physical signal, and by physical signal
Be transferred to the signal processing system 9 connecting with temperature probe 6, signal processing system 9 according to the physical signal analytical calculation received,
Obtain the temperature of molten metal liquid；Meanwhile the gas source of the temperature probe 6 of novel melting metal liquid temperature continuous measuring device
Interface accesses cooling gas all the way, cools down to temperature probe 6, the preferred nitrogen of cooling gas.
Another way gas source interface enters the inside of outside protective pipe 2 by inner draft tube 3, purging smoke evacuation is carried out, from bottom
Air flue discharge.
Draining exhaust gas is preferably argon gas.
Signal processing system 9 can also connect a display instrument.So that user knows measurement result by display instrument.
Temperature-sensing element 1 in a tubular form, and upper end opening, lower end sealing.The diameter in air flue hole is 0.1mm-2mm, preferably
0.5mm.Air flue hole preferably has 40.The total sectional area in air flue hole is 2mm2-50mm2It is preferred that 7.85mm2.The wall thickness of temperature-sensing element 1
For 2.5mm-4.5mm, preferably 3.5mm.The internal diameter of temperature-sensing element 1 is 12mm-22mm, preferably 16mm.1 part of temperature-sensing element is exposed
Outside outside protective pipe 2, the length of the exposed parts of temperature-sensing element 1 is 5mm-40mm, preferably 24mm, the length value of exposed parts
It encloses with the ratio of the inner diameter values of temperature-sensing element 1 for 1.2-2.6, preferably 1.5.Temperature-sensing element 1 is combined with outside protective pipe 2, multiple
The method of conjunction includes but is not limited to squeeze, bond, be threadedly coupled etc., is preferably combined into one by cold isostatic press high-pressure extrusion
Body.The outer surface of temperature-sensing element 1 is coated with antioxidant coating.The outer surface of outside protective pipe 2 is coated with antioxidant coating.Temperature-sensitive member
Part 1 is made of the fast cermet material of heat-transfer rate.2 bulk material of outside protective pipe can be high temperature resistant, resistance to oxidation, resistance to erosion
Fire proofed wood composition, and temperature-sensing element 1 is suppressed with outside protective pipe 2 by high pressure.Attaching nut 4 is compressed on outer guarantor simultaneously
On the inner wall of 2 upper end of pillar.It is preferred that the screw thread specification of attaching nut 4 is M42x4, material is heat resisting steel, on outside protective pipe 2
It holds on inner wall, is equipped with 1:30 conical surface, length 60mm.
Attaching nut 4 is preferably embedded in outside protective pipe 2.Between attaching nut 4 and the upper surface of outside protective pipe 2 exist away from
From the Internal periphery of the outside protective pipe part above attaching nut 4 is in conical surface shape.
The distance of the lower end surface of inner draft tube 3 to the lower end surface of temperature-sensing element 1 is 200mm-1000mm, preferably 600mm.
The preferably compound multi-layered composite pipe of ceramic layer, metal layer of inner draft tube 3.Outside protective pipe 2, inner draft tube 3 are coaxial with one heart.
After the insertion of temperature probe 6, i.e., after connecting screw and attaching nut 4 connect, temperature probe 6, inner draft tube 3 are coaxial with one heart.
The outer profile of the lower end 17 of connecting screw is in conical surface shape, and the lower end surface of the connecting screw conical surface 15 that is in and position
The conical surface concentric locating cooperation that the Internal periphery of outside protective pipe part above attaching nut 4 is in.The upper end of connecting screw
14 Internal periphery can also be in conical surface shape.With with 6 cone match of temperature probe.The outside of the upper end 16 of connecting screw is provided with close
Groove 15 is sealed, is fixed with seal washer in sealed groove 15.High temperature resistant washer made of the preferred heat-resisting material of seal washer.Even
It connects screw rod and gas circuit sealing is carried out by seal washer and temperature probe 6.It is close that the inside of the upper end 14 of outside protective pipe 2 is provided with annular
Sealing end face 5, ring packing end face 5 are located at the top of attaching nut 4, are fixed with seal washer 13 in ring packing end face 5.Sealing
High temperature resistant washer made of the preferred heat-resisting material of washer.Connecting screw by squeeze seal washer, realize with outside protective pipe 2 it
Between sealing.Ring packing groove on outside protective pipe 2 preferably has one or more.And the conical surface can be located at
Upper end, centre, lower end any position.
The use of molten metal thermometric：
Referring to Fig.1, in use, temperature-sensing element 1 and outside protective pipe 2 are inserted into molten metal liquid, the first air inlet 7 is logical
Enter compressed nitrogen, cooling temperature probe 6, the second air inlet 8 is passed through compressed argon, introduces the outer protection of compression from inner draft tube 3
The inside of pipe 2, cleans optical path, is discharged from air flue hole, and temperature-sensing element 1 receives the thermal energy of molten steel radiation, and thermometric is visited
First 6 receive the heat radiation energy issued from temperature-sensing element 1, signal processing system 9 are transferred to, to calculate the temperature of molten steel
Degree.
The use of molten metal thermometric and flow control：
Referring to Fig. 2, in use, temperature-sensing element 1 and outside protective pipe 2 are inserted into molten metal liquid 10, the first air inlet 7
It is passed through compressed nitrogen, cooling temperature probe 6, the second air inlet 8 is passed through compressed argon, introduces the outer guarantor of compression from inner draft tube 3
The inside of pillar 2, cleans optical path, is discharged from air flue hole, and temperature-sensing element 1 receives the thermal energy of molten steel radiation, thermometric
Probe 6 receives the heat radiation energy of the sending from temperature-sensing element 1, signal processing system 9 is transferred to, to calculate molten steel
Temperature.The globoidal structure 11 in outside protective pipe 2 and the mouth of a river 19 cooperate simultaneously, realize the function of molten metal liquid flow control.Cambered surface
Gap between structure 11 and the mouth of a river is bigger, and flow is bigger.Molten metal liquid can be molten steel.
Connecting screw realizes sealing by squeezing gasket, and gasket material is graphite, with a thickness of 1mm.Temperature probe 6 with
Connecting screw uses cone match, and one of sealed groove is topmost arranged in connecting screw, is realized by super heated rubber O-ring
Gas circuit sealing.Compressed nitrogen is inputted from gas source interface, temperature probe 6 is cooled down, inputs compression argon from gas source input interface
Gas is introduced inside outside protective pipe 2 by inner draft tube 3, is purged to optical path, and is discharged from air flue hole.
3 main part of inner draft tube is that 99% aluminum oxide material forms by content.Outside protective pipe 2 itself,
Length can be consistent with live stopper length, and globoidal structure can also be consistent with live stopper caput shape, reaches close with the mouth of a river
Fiting effect realizes flow control, closes the operation such as stream.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of novel melting metal liquid temperature continuous measuring device, including a molten metal fluid temperature measurement are visited with thermometric
Head, the temperature probe are connected with the connecting screw of an internal openings, which is characterized in that and it further include an outside protective pipe, it is described outer
Protection pipe upper end opening, lower end are connected with a temperature-sensing element；
The inside of the outside protective pipe is fixed with an attaching nut matched with the connecting screw, and the attaching nut lower section is solid
Surely there is the inner draft tube of a both ends open；
The inner draft tube is located in the outside protective pipe, and the inner wall of the inner draft pipe outer wall and the outside protective pipe
Between be equipped with gap；
The lower end of the outside protective pipe is a globoidal structure, and the globoidal structure is uniformly provided at least in a circumferential direction
1 air flue hole, the distance of air flue hole arrival end to the temperature-sensing element bottom end are 50mm-150mm, in the air flue hole
The angle of the central axis of bobbin thread and the outside protective pipe is 0-45 °.
2. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：It is described
The diameter in air flue hole be 0.1mm-2mm, the sectional area in each air flue hole and be 2mm2-50mm2。
3. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：It is described
In a tubular form, and upper end opening, lower end sealing, the wall thickness of the temperature-sensing element are 2.5mm-4.5mm to temperature-sensing element, the temperature-sensitive member
The internal diameter of part is 12mm-22mm.
4. a kind of novel melting metal liquid temperature continuous measuring device according to claim 3, it is characterised in that：It is described
Temperature-sensing element part is exposed at outside the outside protective pipe, and the length of the exposed parts of the temperature-sensing element is 5mm-40mm, exposed
The ratio of the inner diameter values of partial length value and the temperature-sensing element encloses for 1.2-2.6.
5. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：It is described
The maximum distance of the lower end surface of inner draft tube to the lower end surface of the temperature-sensing element is 200mm-1000mm.
6. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：It is described
The outer surface of temperature-sensing element is coated with antioxidant coating, and the outer surface of the outside protective pipe is coated with antioxidant coating.
7. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：It is described
Outside protective pipe, the inner draft tube are coaxial with one heart；
After temperature probe insertion, i.e., after connecting screw is connected with attaching nut, the temperature probe, the inner draft tube,
The temperature-sensing element, the connecting screw are coaxial with one heart.
8. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：It is described
The outer profile of the lower end of connecting screw is in conical surface shape, and the lower end surface of the connecting screw conical surface that is in be located at the company
The conical surface concentric locating cooperation that the Internal periphery of outside protective pipe part above connected nut is in；
Ring packing end face is provided on the inside of the upper end of the outside protective pipe, the ring packing end face is located at the connection spiral shell
Female top is fixed with seal washer in the ring packing end face.
9. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：It is located at
The ring packing groove of the connecting screw upper end has one or more, positioned at the upper end of the conical surface, centre, lower end it is any
Position.
10. a kind of novel melting metal liquid temperature continuous measuring device according to claim 1, it is characterised in that：Institute
The distance for stating air flue hole arrival end to the temperature-sensing element bottom end is 120mm, the center line axis in the air flue hole and the outer guarantor
The angle of the central axis of pillar is 10 °, and the diameter in the air flue hole is 0.5mm, and the air flue hole has 40.
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| CN201820454427.2U CN208155483U (en) | 2018-04-02 | 2018-04-02 | A kind of novel melting metal liquid temperature continuous measuring device |
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| CN201820454427.2U CN208155483U (en) | 2018-04-02 | 2018-04-02 | A kind of novel melting metal liquid temperature continuous measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113319256A (en) * | 2021-05-31 | 2021-08-31 | 广东韶钢松山股份有限公司 | Energy storage type self-adjusting tundish continuous temperature measuring device and adjusting method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319256A (en) * | 2021-05-31 | 2021-08-31 | 广东韶钢松山股份有限公司 | Energy storage type self-adjusting tundish continuous temperature measuring device and adjusting method |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190816 Address after: Room 302, Building 518, Junbei Road, Minhang District, Shanghai, 201199 Patentee after: Tuhong Automation Instrument (Shanghai) Co., Ltd. Address before: 430000 No. 8 Hongshan Road, Wuchang District, Wuhan City, Hubei Province Co-patentee before: Liu Xu Patentee before: Tao Yu |
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| TR01 | Transfer of patent right |