CN111693205B - Pressure sensor convenient to maintain and replace - Google Patents
Pressure sensor convenient to maintain and replace Download PDFInfo
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- CN111693205B CN111693205B CN202010678156.0A CN202010678156A CN111693205B CN 111693205 B CN111693205 B CN 111693205B CN 202010678156 A CN202010678156 A CN 202010678156A CN 111693205 B CN111693205 B CN 111693205B
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- heat dissipation
- pressure sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
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Abstract
The invention discloses a pressure sensor convenient to maintain and replace, which comprises a pipe body and a sensor body, wherein a detachable installation pipe is fixedly arranged on the side face of the pipe body, a connecting sleeve is fixedly arranged at one end opening of the installation pipe, a detachable sensor body is fixedly arranged at the end opening of the connecting sleeve, an electric wire is arranged at one end of the sensor body, a heat dissipation sleeve is sleeved outside the sensor body, and an air guide cylinder is sleeved outside the heat dissipation sleeve. The liquid flow hole is not connected with the intercepting head through rotating the rotating rod to rotate so that the liquid leakage condition is avoided when the sensor body is detached due to the fact that the liquid flow hole is not connected with the intercepting head, maintenance of the sensor body is more convenient to replace, heat generated by the sensor body during working is conducted and dissipated through the arranged heat dissipation sleeve, and the heat dissipated by the heat dissipation sleeve is timely and quickly discharged through blowing into the air guide cylinder through the air inlet mechanism to achieve efficient heat dissipation of the sensor body.
Description
Technical Field
The invention relates to the technical field of pressure sensors, in particular to a pressure sensor convenient to maintain and replace.
Background
The pressure sensor is the most common sensor in industrial practice, is widely applied to various industrial automatic control environments, relates to water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, military industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and other industries, and simply introduces the principles and the applications of some common sensors. In addition, medical pressure sensors are arranged, some pressure sensors are used for hydraulic sensing monitoring, and pressure numerical value display is carried out by monitoring hydraulic pressure in real time and transmitting hydraulic signals to a display.
The applicant of the present invention finds that the existing pressure sensor for hydraulic monitoring is often installed on a side wall of a liquid container or a wall of a liquid pipeline, but when the existing hydraulic sensor is disassembled, a mounting hole of the existing hydraulic sensor on the side wall of the liquid container or the wall of the liquid pipeline often causes liquid leakage, so that the disassembly of the hydraulic sensor requires emptying liquid in the liquid container or the liquid pipeline, so that the maintenance and the replacement of the pressure sensor are inconvenient, and the existing pressure sensor does not have a heat dissipation function, so that heat generated during working cannot be dissipated, and the normal work of the pressure sensor is affected.
Disclosure of Invention
The invention aims to provide a pressure sensor convenient to maintain and replace, and aims to solve the problems that the existing pressure sensor is inconvenient to maintain and replace and does not have a heat dissipation function.
The invention is realized by the following steps:
a pressure sensor convenient for maintenance and replacement comprises a pipe body and a sensor body, wherein a detachable installation pipe is fixedly arranged on the side face of the pipe body, a connecting sleeve is fixedly arranged at one end port of the installation pipe, the detachable sensor body is fixedly arranged at the end port of the connecting sleeve, an electric wire is arranged at one end of the sensor body, a heat dissipation sleeve is sleeved at the outer side of the sensor body, an air guide cylinder is sleeved at the outer side of the heat dissipation sleeve, an air inlet mechanism is fixedly arranged at the air inlet end of the air guide cylinder, a flow intercepting head is arranged at one end of the connecting sleeve, external threads are arranged at the outer side of the connecting sleeve, the connecting sleeve is fixedly screwed at the end port of the installation pipe through the external threads, a ball head is arranged at the inner side of the installation pipe and is blocked at the end port of the flow intercepting head, a vertically penetrating liquid flow hole is arranged at the center of the ball head, a rotating rod is fixedly arranged at one side of the ball head, and a rotating handle is fixedly arranged at one end of the rotating rod passing through the installation pipe, the outside cover of installation pipe is equipped with rectangular protective housing, and the one end of protective housing can be dismantled and fix on the body, adapter sleeve through setting up is connected sensor body and installation pipe, and communicate through the inboard of installation pipe with the body, when maintaining change dismantlement to the sensor body, it makes the liquid flow hole not be connected with the closure head through rotating dwang drive bulb and then realizes the condition that the weeping appears when avoiding sensor body to dismantle to the shutoff of closure head, make the maintenance of sensor body change more convenience, and the heat that produces the sensor body during operation carries out the conduction through the heat dissipation cover that sets up and dispels, and blow in time quick the discharge realization to the high-efficient heat dissipation of sensor body with the heat of heat dissipation cover dissipation through air inlet mechanism in to the wind-guiding section of thick bamboo.
Further, the fixed block that is provided with in side of body, and be provided with on the fixed block with the communicating mounting hole in inboard of body, the side of body lies in the upper and lower both sides of mounting hole and all is provided with the card post, and the card post rotates through fixed rotating shaft to be fixed on the body, realizes fixed the installation of installation pipe through the mounting hole to it is fixed to realize the chucking of protective housing through the card post.
Further, the port of protective housing one end is overlapped on the fixed block, and the protective housing is located the upper and lower both sides of port and all is provided with fixed limit, and the surface on fixed limit is provided with and blocks post complex draw-in groove, realizes cup jointing the location of protective housing through the fixed block to through the draw-in groove on the fixed limit realization with the joint cooperation of card post.
Furthermore, the terminal surface that the port was kept away from to the protective housing the other end is provided with the running-on, and all is provided with the gas vent on the lateral wall of the both sides of protective housing, realizes the cooperation of cup jointing with the air inlet box through the running-on to realize the discharge of hot gas through the gas vent.
Furthermore, one end of the installation pipe is provided with an installation head fixedly connected with the installation hole through threads, an inner interface matched and connected with the outer threads of the connecting sleeve is arranged on the inner side of the port at the other end of the installation pipe, the installation pipe is installed in the installation hole through the installation head, and the installation pipe is fixedly connected with the connecting sleeve through the inner interface.
Furthermore, one end, close to the mounting pipe, of the outer side surface of the air duct is provided with a plurality of radiating holes which are uniformly arranged, the other end of the air duct is provided with a fixing ring, one side of the fixing ring is provided with a raised clamping table, air inlet holes which are uniformly distributed are formed in the surface of the clamping table, radiating and air exhausting are achieved through the radiating holes, and clamping with the air inlet box is achieved through the clamping table.
Furthermore, air inlet mechanism is including the air inlet box of cover on the card platform, and a side end face of air inlet box is provided with the air inlet fan, and then the realization is cooled down cold air input through the continuous interior bloies of air inlet box of air inlet fan.
Furthermore, the heat dissipation sleeve is made of aluminum materials, radiating fins which are radially and uniformly arranged are arranged on the outer side surface of the heat dissipation sleeve, the heat dissipation sleeve is made of aluminum materials and has good heat conductivity, and quick heat dissipation is achieved through the radiating fins.
Furthermore, the end of the sensor body is provided with a connector, one end of the connecting sleeve is provided with a connector which is connected with the connector in a threaded fit manner, and the sensor body is fixedly connected with the connecting sleeve through the matching of the connector and the connector.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the sensor body is connected with the mounting pipe through the connecting sleeve, the mounting pipe is communicated with the inner side of the pipe body, when the sensor body is maintained, replaced and disassembled, the ball head is driven to rotate through the rotating rod, so that the liquid flow hole is not connected with the intercepting head, the intercepting head is plugged, the sensor body is prevented from leaking when being disassembled, the sensor body is more convenient to maintain and replace, heat generated during the working of the sensor body is conducted and dissipated through the arranged heat dissipation sleeve, and the heat dissipated by the heat dissipation sleeve is timely and quickly dissipated by blowing air into the air guide cylinder through the air inlet mechanism, so that the sensor body is efficiently dissipated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a perspective view of a pressure sensor of the present invention that is easy to repair and replace;
FIG. 2 is a schematic view of a pressure sensor tube of the present invention for easy maintenance and replacement;
FIG. 3 is a schematic view of a protective case of a pressure sensor of the present invention shown in a position to facilitate maintenance and replacement;
FIG. 4 is a schematic structural view of a pressure sensor of the present invention for easy maintenance and replacement;
FIG. 5 is a schematic view of the mounting tube of a pressure sensor of the present invention shown in a position to facilitate maintenance and replacement;
FIG. 6 is a schematic view of an air duct of a pressure sensor of the present invention for easy maintenance and replacement;
FIG. 7 is a schematic view of a sensor body of a pressure sensor of the present invention shown in a position to facilitate maintenance and replacement;
fig. 8 is a schematic view of a connection sleeve of a pressure sensor for convenient maintenance and replacement according to the present invention.
In the figure: 1. a pipe body; 11. clamping the column; 12. mounting holes; 13. fixing the rotating shaft; 14. a fixed block; 2. a protective shell; 21. fixing the edge; 22. a card slot; 23. looping; 24. an exhaust port; 3. an electric wire; 4. an air inlet mechanism; 41. an air inlet fan; 42. an air inlet box; 5. an air duct; 51. an air inlet hole; 52. a stationary ring; 53. heat dissipation holes; 54. clamping a platform; 6. installing a pipe; 61. an inner interface; 62. a ball head; 63. a mounting head; 64. rotating the rod; 65. a liquid flow aperture; 7. a sensor body; 71. a heat dissipation sleeve; 72. a connector; 8. connecting sleeves; 81. a connecting port; 82. an external thread; 83. a flow interception head.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Embodiment 1, specifically refer to fig. 1, fig. 4, fig. 5, fig. 7, and fig. 8, a pressure sensor convenient for maintenance and replacement includes a tube body 1 and a sensor body 7, a detachable installation tube 6 is fixedly disposed on a side surface of the tube body 1, a connection sleeve 8 is fixedly disposed at an end port of the installation tube 6, a detachable sensor body 7 is fixedly disposed at an end port of the connection sleeve 8, an electric wire 3 is disposed at one end of the sensor body 7, a heat dissipation sleeve 71 is sleeved outside the sensor body 7, the heat dissipation sleeve 71 is made of an aluminum material, heat dissipation fins uniformly arranged in a radial shape are disposed on an outer surface of the heat dissipation sleeve 71, the heat dissipation sleeve 71 is made of an aluminum material and has good thermal conductivity, and rapid heat dissipation is achieved by the heat dissipation fins, an air guide cylinder 5 is sleeved outside the heat dissipation sleeve 71, and an air inlet mechanism 4 is fixedly disposed at an air inlet end of the air guide cylinder 5, one end of adapter sleeve 8 is provided with interception head 83, and the outside of adapter sleeve 8 is provided with external screw thread 82, adapter sleeve 8 passes through external screw thread 82 fixed the revolving screw and revolves the port department at installation pipe 6, the inboard of installation pipe 6 is provided with bulb 62, and bulb 62 blocks up the port department at interception head 83, the center of bulb 62 is provided with vertical through-going liquid flow hole 65, and one side of bulb 62 is fixed and is provided with dwang 64, the one end of dwang 64 is passed the fixed turning handle that is provided with of installation pipe 6, the outside cover of installation pipe 6 is equipped with rectangular protective housing 2, and the one end of protective housing 2 can be dismantled and fix on body 1, be connected sensor body 7 and installation pipe 6 through adapter sleeve 8 that sets up, and communicate through the inboard of installation pipe 6 with body 1, when maintaining change dismantlement to sensor body 7, drive bulb 62 through dwang 64 rotates and make liquid flow hole 65 not be connected with interception head 83 then realize dismantling sensor body 7 to the shutoff of interception head 83 and avoid sensor body 7 to dismantle The condition of weeping appears in the time for sensor body 7's maintenance is changed more conveniently, and the heat that produces sensor body 7 during operation is conducted through the heat dissipation cover 71 that sets up and is dissipated, and bloies in the air guide duct 5 through air inlet mechanism 4 and realizes the high-efficient heat dissipation to sensor body 7 with the timely quick discharge of the heat that heat dissipation cover 71 dissipated.
Specifically, referring to fig. 2, a fixing block 14 is fixedly arranged on the side surface of the pipe body 1, a mounting hole 12 communicated with the inner side of the pipe body 1 is formed in the fixing block 14, clamping posts 11 are arranged on the upper side and the lower side of the mounting hole 12 on the side surface of the pipe body 1, the clamping posts 11 are rotatably fixed on the pipe body 1 through a fixing rotating shaft 13, the mounting and fixing of the mounting pipe 6 are realized through the mounting hole 12, and the protective shell 2 is clamped and fixed through the clamping posts 11.
Specifically, as shown in fig. 3, a port at one end of the protective shell 2 is sleeved on the fixing block 14, fixing edges 21 are disposed on upper and lower sides of the port of the protective shell 2, a clamping groove 22 matched with the clamping column 11 is disposed on the surface of each fixing edge 21, positioning and sleeving of the protective shell 2 are achieved through the fixing block 14, clamping and matching of the protective shell 2 and the clamping column 11 are achieved through the clamping groove 22 on the fixing edge 21, a sleeve opening 23 is disposed on the end face of the protective shell 2, which is far away from the other end of the port, exhaust ports 24 are disposed on the side walls of the two sides of the protective shell 2, sleeve and sleeving and matching of the protective shell 2 and the air inlet box 42 are achieved through the sleeve opening 23, and exhaust of hot air is achieved through the exhaust ports 24.
Specifically, referring to fig. 5, one end of the mounting tube 6 is provided with a mounting head 63 fixedly connected to the mounting hole 12 through a screw thread, an inner port 61 connected to the external thread 82 of the connection sleeve 8 in a matching manner is provided inside the port at the other end of the mounting tube 6, the mounting tube 6 is mounted in the mounting hole 12 through the mounting head 63, and the connection and fixation with the connection sleeve 8 is realized through the inner port 61.
Specifically, referring to fig. 6, one end of the outer side surface of the air duct 5 close to the mounting pipe 6 is provided with a plurality of heat dissipation holes 53 which are uniformly arranged, the other end of the air duct 5 is provided with a fixing ring 52, one side of the fixing ring 52 is provided with a raised clamping table 54, the surface of the clamping table 54 is provided with air inlet holes 51 which are uniformly arranged, heat dissipation and air exhaust are realized through the heat dissipation holes 53, and the clamping table 54 is used for realizing clamping connection with the air inlet box 42.
Specifically, referring to fig. 6, the air intake mechanism 4 includes an air intake box 42 sleeved on the clamping table 54, and an air intake fan 41 is disposed on an end surface of one side of the air intake box 42, and cool air is continuously blown into the air intake box 42 by the air intake fan 41 to cool the air.
Specifically, referring to fig. 7 and 8, a connector 72 is disposed at an end of the sensor body 7, a connector 81 that is connected to the connector 72 in a screw-fit manner is disposed at one end of the connecting sleeve 8, and the sensor body 7 is fixedly connected to the connecting sleeve 8 by the connection between the connector 72 and the connector 81.
The working principle is that when the sensor body 7 is maintained, replaced and disassembled, the upper clamping column 11 and the lower clamping column 11 are rotated, so that the protective shell 2 is disassembled, then the ball head 62 is driven to rotate through the rotating rod 64, so that the liquid flow hole 65 is not connected with the cutoff head 83, the cutoff head 83 is blocked, then the sensor body 7 is disassembled and replaced, heat generated when the sensor body 7 works is conducted and dissipated through the heat dissipation sleeve 71, the air inlet fan 41 continuously blows air into the air inlet box 42 and uniformly blows air into the air guide cylinder 5, and the heat dissipated by the heat dissipation sleeve 71 is timely and quickly dissipated, so that efficient heat dissipation of the sensor body 7 is achieved.
The device obtained by the design can basically meet the requirements of convenient maintenance and replacement of the existing pressure sensor and the use of the device with the heat dissipation function, but the designer further improves the device with the aim of further improving the function.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a pressure sensor who conveniently maintains and change, includes body (1) and sensor body (7), its characterized in that: the detachable installation pipe (6) is fixedly arranged on the side face of the pipe body (1), the connecting sleeve (8) is fixedly arranged at one end port of the installation pipe (6), the detachable sensor body (7) is fixedly arranged at the end port of the connecting sleeve (8), the electric wire (3) is arranged at one end of the sensor body (7), the heat dissipation sleeve (71) is sleeved outside the sensor body (7), the air guide cylinder (5) is sleeved outside the heat dissipation sleeve (71), the air inlet mechanism (4) is fixedly arranged at the air inlet end of the air guide cylinder (5), the flow interception head (83) is arranged at one end of the connecting sleeve (8), the external thread (82) is arranged outside the connecting sleeve (8), the connecting sleeve (8) is fixedly screwed at the end port of the installation pipe (6) through the external thread (82), and the ball head (62) is arranged on the inner side of the installation pipe (6), and bulb (62) block up the port department at shut-off head (83), the center of bulb (62) is provided with vertical liquid flow hole (65) that run through, and one side of bulb (62) is fixed and is provided with dwang (64), the one end of dwang (64) is passed installation pipe (6) and is fixed and is provided with the turning handle, the outside cover of installation pipe (6) is equipped with rectangular protective housing (2), and the one end of protective housing (2) can be dismantled and fix on body (1).
2. The pressure sensor convenient to maintain and replace according to claim 1, wherein a fixing block (14) is fixedly arranged on the side surface of the pipe body (1), a mounting hole (12) communicated with the inner side of the pipe body (1) is formed in the fixing block (14), clamping columns (11) are arranged on the upper side and the lower side of the mounting hole (12) on the side surface of the pipe body (1), and the clamping columns (11) are rotatably fixed on the pipe body (1) through a fixing rotating shaft (13).
3. The pressure sensor convenient to maintain and replace according to claim 2, wherein a port at one end of the protective shell (2) is sleeved on the fixing block (14), fixing edges (21) are arranged on the upper side and the lower side of the port of the protective shell (2), and a clamping groove (22) matched with the clamping column (11) is formed in the surface of each fixing edge (21).
4. The pressure sensor convenient for maintenance and replacement as claimed in claim 3, wherein the end face of the other end of the protective shell (2) far away from the port is provided with a sleeve opening (23), and the side walls of the two sides of the protective shell (2) are provided with exhaust openings (24).
5. The pressure sensor convenient for maintenance and replacement as claimed in claim 4, wherein one end of the mounting tube (6) is provided with a mounting head (63) fixedly connected with the mounting hole (12) through a thread, and the inner side of the port of the other end of the mounting tube (6) is provided with an inner port (61) matched and connected with the outer thread (82) of the connecting sleeve (8).
6. The pressure sensor convenient to maintain and replace according to claim 5, wherein one end, close to the installation pipe (6), of the outer side surface of the air duct (5) is provided with a plurality of uniformly arranged heat dissipation holes (53), the other end of the air duct (5) is provided with a fixing ring (52), one side of the fixing ring (52) is provided with a raised clamping table (54), and the surface of the clamping table (54) is provided with uniformly arranged air inlet holes (51).
7. The pressure sensor convenient to maintain and replace as claimed in claim 6, wherein the air intake mechanism (4) comprises an air intake box (42) sleeved on the clamping table (54), and an air intake fan (41) is arranged on one side end face of the air intake box (42).
8. The pressure sensor convenient for maintenance and replacement as claimed in claim 7, wherein the heat dissipation sleeve (71) is made of aluminum material, and the outer side surface of the heat dissipation sleeve (71) is provided with radiating fins which are uniformly arranged in a radial shape.
9. The pressure sensor convenient to maintain and replace according to claim 8, wherein a connector (72) is arranged at the end of the sensor body (7), and a connector (81) connected with the connector (72) in a threaded fit manner is arranged at one end of the connecting sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010678156.0A CN111693205B (en) | 2020-07-15 | 2020-07-15 | Pressure sensor convenient to maintain and replace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010678156.0A CN111693205B (en) | 2020-07-15 | 2020-07-15 | Pressure sensor convenient to maintain and replace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111693205A CN111693205A (en) | 2020-09-22 |
| CN111693205B true CN111693205B (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010678156.0A Active CN111693205B (en) | 2020-07-15 | 2020-07-15 | Pressure sensor convenient to maintain and replace |
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| CN (1) | CN111693205B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161730A (en) * | 2020-09-27 | 2021-01-01 | 张红卫 | Pressure sensor and protective sleeve structure |
| CN111928995B (en) * | 2020-10-15 | 2021-01-19 | 南京沃天科技有限公司 | Pressure sensor for detecting pipeline liquid pressure |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5517859A (en) * | 1994-03-22 | 1996-05-21 | Goheen; William D. | End user water distribution system condition testing apparatus |
| CN201284860Y (en) * | 2008-10-28 | 2009-08-05 | 吴兆彦 | Special valve for pressure meter |
| CN103016751A (en) * | 2012-12-14 | 2013-04-03 | 宁秀文 | Valve and pressure measuring device |
| CN203881486U (en) * | 2014-03-25 | 2014-10-15 | 孙建勇 | Self-sealing type pressure gage joint |
| CN204061970U (en) * | 2014-09-01 | 2014-12-31 | 浙江恒科阀门科技有限公司 | A kind of ball valve |
| CN105465434B (en) * | 2016-01-13 | 2018-03-09 | 台州信溢农业机械有限公司 | A kind of rapid intercepting device for high-pressure nozzle |
| CN106197830A (en) * | 2016-07-06 | 2016-12-07 | 苏州台合达环保设备有限公司 | A kind of filter cylinder pressure-detecting device |
| CN206310062U (en) * | 2016-11-28 | 2017-07-07 | 张家港市岩亮金属制品有限公司 | A kind of valve casting |
| CN207500615U (en) * | 2017-10-17 | 2018-06-15 | 上海科勒电子科技有限公司 | A kind of control valve |
| CN207689065U (en) * | 2017-12-19 | 2018-08-03 | 南京航伽电子科技有限公司 | A kind of pressure transmitter assembly being easily changed |
| CN208652148U (en) * | 2018-08-28 | 2019-03-26 | 西安未来检测技术有限公司 | A kind of gas pipeline detection system |
| CN210689917U (en) * | 2019-11-09 | 2020-06-05 | 辽宁华融富瑞新能源科技股份有限公司 | Pressure transmitter convenient to dismantle |
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Address after: 211162 Wenying Road, Binjiang Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing wotian Technology Co.,Ltd. Address before: 211162 Wenying Road, Binjiang Development Zone, Jiangning District, Nanjing City, Jiangsu Province Patentee before: NANJING WOTIAN TECHNOLOGY Co.,Ltd. |