CN107885247B - Industrial nitrogen gas dehumidification detection device - Google Patents
Industrial nitrogen gas dehumidification detection device Download PDFInfo
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- CN107885247B CN107885247B CN201711173217.2A CN201711173217A CN107885247B CN 107885247 B CN107885247 B CN 107885247B CN 201711173217 A CN201711173217 A CN 201711173217A CN 107885247 B CN107885247 B CN 107885247B
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- main body
- arc
- nitrogen
- body cylinder
- dehumidification
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D22/00—Control of humidity
- G05D22/02—Control of humidity characterised by the use of electric means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses an industrial nitrogen dehumidification detection device, and discloses a device for detecting and drying nitrogen by stirring gas and heating through the cooperation of two eccentric spiral blades. Its characterized in that annular cover board to main part section of thick bamboo on, and the border position forms sealedly through the welding, the main part case is the cylinder container, and it has a plurality of gas distribution pipes to open on the main part case lateral wall, and communicates with main part incasement, and main part incasement wall equidistance is opened has a plurality of rubber strips, rubber strip quantity is the even number, has put a set of arc copper between two adjacent rubber strips, and the equidistance has a plurality of magnetic blocks on the arc copper, two a set of arc copper, and distribute from top to bottom, and pass through the power cord by a plurality of arc copper of upside and connect, and a plurality of arc copper by the downside pass through the power cord and connect, and annular cover board middle part position is arranged in through a plurality of fixed bolster to the quill shaft motor, and the one end of transmission.
Description
Technical Field
The invention discloses an industrial nitrogen dehumidification detection device, relates to a device for carrying out dehumidification detection on nitrogen in a nitrogen tank for energy storage in use of industrial equipment, and belongs to the field of industrial equipment. In particular to a device for detecting and drying nitrogen by stirring gas and heating through the matching of two eccentric helical blades.
Background
At present, in industrial production, nitrogen can be adopted for energy storage in the inlet and outlet, the pressure of equipment is increased through the nitrogen, in order to ensure the stable pressurization of the energy storage of the equipment, regular detection is needed to be carried out on the air pressure of the nitrogen, the purity of the nitrogen is mainly influenced on the energy storage of the nitrogen, moisture is contained in the nitrogen, the nitrogen in the nitrogen tank on the equipment is unstable, the continuity and the stability of the pressure during pressurization are influenced, after the equipment is adapted for a period of time, condensed water in the nitrogen tank can be released, partial nitrogen leakage can be caused after the release, the pressure in the nitrogen tank is reduced, nitrogen supplement is needed, the nitrogen in a nitrogen bottle is directly injected into the nitrogen tank on the equipment during supplement, due to the existence of pressure difference, the pressure of the nitrogen becomes small after the reinjection, the temperature changes, in the process, condensed water enters along with the nitrogen, and forms, present equipment does not have the ability of carrying out the drying to nitrogen gas, need to increase a jar body and carry out the drying dehumidification and use, through placing the plastic ball at jar internal, adsorb the moisture in the nitrogen gas, need regularly dry the plastic ball, ensure that the moisture in the nitrogen gas can be adsorbed, it is complicated to carry out drying process to the plastic ball at every turn, the complexity of equipment has been increased, and it is poor to the dehumidification effect of nitrogen gas, can not carry out the dehumidification when nitrogen gas is injected, the aforesaid does not detect the result of nitrogen gas dehumidification.
Publication number CN104089464A discloses a dehumidification system of a pressure vessel, which is used for dehumidifying the pressure vessel, and comprises a nitrogen injection device, a vacuum-pumping device, an air inlet pipe and an air outlet pipe; the nitrogen injection device is communicated with the pressure container through an air inlet pipe and is used for injecting nitrogen into the pressure container; the vacuum pumping device is communicated with the pressure container through the air outlet pipe and is used for pumping air in the pressure container.
Publication No. CN104896883A discloses a nitrogen dehumidifying dryer and a dehumidifying and drying method for plastic materials, and the specific technical scheme is as follows: connect nitrogen gas conveyor on sealed material bucket, the device is including setting gradually compressed air filter on pipeline, nitrogen gas evolution ware, air-blower and heating device, compressed air filter sets up the entry end at pipeline, compressed air filter's output and nitrogen gas evolution ware are connected, nitrogen gas evolution ware's output and air-blower connection, the air-blower is connected with sealed material bucket, the pipeline part between air-blower and the sealed material bucket is equipped with heating device. Utilize very dry nitrogen gas absorption on the moisture that plastic material separated out in the sealed material bucket, discharge moisture, compare in the pure means of toasting and saved a lot of time, the drying effect has obtained very big promotion moreover, easily reaches the drying requirement of various plastic materials, especially transparent plastic material.
Disclosure of Invention
In order to improve the situation, the invention provides an industrial nitrogen dehumidification detection device, which is a device for stirring gas, heating and detecting and drying nitrogen through the matching of two eccentric spiral blades.
The invention relates to an industrial nitrogen dehumidification detection device, which is realized by the following steps: the invention relates to an industrial nitrogen dehumidification detection device, which consists of a main body fixing device and a dehumidification detection device, wherein the main body fixing device consists of an annular cover plate, a hollow shaft motor, a fixing bracket, gas distribution pipes, a main body cylinder, a transmission shaft, arc-shaped copper plates and rubber strips, the annular cover plate is arranged on the main body cylinder, the edge position of the annular cover plate is sealed by welding, the main body cylinder is a cylindrical container, the side wall of the main body cylinder is provided with a plurality of gas distribution pipes and is communicated with the inside of the main body cylinder, the inner wall of the main body cylinder is provided with a plurality of rubber strips at equal intervals, the number of the rubber strips is even, a group of arc-shaped copper plates are arranged between every two adjacent rubber strips, the arc-shaped copper plates are equidistantly provided with a plurality of magnetic blocks, the arc-shaped copper plates are arranged in two groups and are distributed up and down, the arc-shaped copper plates close to the upper side, one end of the transmission shaft is connected with a motor shaft of the hollow shaft motor and is positioned in the main body cylinder, the net cylinder is positioned at one end of the transmission shaft and is communicated with the hollow shaft on the hollow shaft motor, the dehumidification detection device comprises a humidity sensor, rectangular grooves, a metal brush plate, a limiting block, a ceramic heating pipe, waist-shaped holes, spiral blades, a power supply, a controller, a data processor, a signal converter, a display and a temperature sensor, the two spiral blades are arranged on the transmission shaft at equal angles, the two spiral blades and the transmission shaft have eccentricity and have the same direction and opposite direction, a layer of water-absorbing polyester is arranged on the upper surface and the lower surface of each spiral blade, the surface of the water-absorbing polyester is provided with honeycomb-shaped embossments, the embossing density is gradually increased, the inner edge of each spiral blade is equidistantly provided with a plurality of rectangular grooves, the waist-shaped holes are arranged on, overlap from top to bottom in waist type hole, ceramic heating pipe corresponds wears waist type hole, and carry out spacing fixed through the spacing ring, two metal brush boards have been put to ceramic heating pipe outward flange, and contact with the arc copper respectively, a plurality of humidity transducer equidistance are arranged in on the transmission shaft, and be connected with the signal converter on the main part section of thick bamboo, temperature sensor arranges in on the transmission shaft other end, and be connected with signal converter, data processor arranges in on the main part section of thick bamboo, and be connected with signal converter, the controller is arranged in on the main part section of thick bamboo, and be connected with data processor, the display is arranged in on the main part section of thick bamboo, and be connected with the controller, the power is arranged in on the main part section of thick bamboo, and be connected with the controller, the electromagnetic.
When in use, the hollow shaft part of the hollow shaft motor is connected with a nitrogen bottle, the gas distribution pipe is respectively connected with a nitrogen pipe on the equipment, a power line on the arc copper plate is connected with a power supply, a metal brush plate is contacted with the corresponding arc copper plate, the circuit is connected and heated by a ceramic heating pipe, the heat exchange is carried out in the main body cylinder, then the nitrogen in the nitrogen bottle is injected, the nitrogen enters from the hollow shaft motor, then is diffused from the net basket to the periphery and is diffused along the helical blade, when the nitrogen is diffused along the helical blade, the nitrogen is heated in the main body cylinder, the temperature is changed, the moisture in the nitrogen sinks and is contacted with the surface of the helical blade, meanwhile, the humidity sensor on the transmission shaft detects the humidity of the nitrogen, the detection signal is converted by a signal converter, the converted signal is transmitted into a data processor, and the operation is carried out according to a preset computer program, when the detected humidity is larger than a set value, numerical display is carried out on a display, a controller controls a hollow shaft motor to rotate, two spiral blades are driven to rotate through a transmission shaft, the rotating direction is consistent with the rotating direction of the spiral blades, nitrogen is pushed to stir in a main body cylinder through the spiral blades, the residence time is increased, a humidity sensor detects the humidity of the nitrogen again, a detection signal is transmitted to a signal converter, the signal is transmitted to a data processor through conversion, then judgment is carried out through the data processor, when the numerical value is smaller than or equal to a preset value, the hollow shaft motor is stopped through an electromagnetic relay by the controller, a metal brush plate is located at the position of a rubber strip, when the spiral blades rotate, the metal brush plate can contact the rubber strip in a rotating mode, then moves along the rubber strip and is separated from a corresponding arc-shaped copper plate, the ceramic heating pipe stops heating, when the ceramic heating pipe rotates, the metal brush plate is attached to the arc copper plate again under the combined action of the rotating centrifugation and the attraction of the magnetic blocks on the arc copper plate, the circuit is connected for heating, the heat exchange with nitrogen is increased along with the intermittent heating of the rotating ceramic heating pipe, the temperature sensor detects the temperature in the main body cylinder, the detection signal is converted through the signal converter, the converted signal is transmitted to the data processor, the operation is carried out according to a preset computer program, when the detected humidity is greater than a set value, the controller controls the hollow shaft motor to deflect, so that the metal brush plate is positioned at the position of the rubber strip,
the number of the rubber strips is even, a group of arc-shaped copper plates are arranged between every two adjacent rubber strips, the even number of the rubber strips can form symmetrical blocking on the inner wall of the main body cylinder, intermittent connection and disconnection are formed by matching with the rotation of the hollow shaft motor, intermittent heating exchange is carried out on nitrogen, and moisture in the nitrogen is dried;
the arc copper plate is equidistantly provided with a plurality of magnetic blocks, and the metal brush plate extruded and retreated by the rubber strip can be reset by matching with centrifugal force in the rotating process, so that the metal brush plate is attached to the arc copper plate to form intermittent heating;
the plurality of arc-shaped copper plates close to the upper side are connected through power lines, and the plurality of arc-shaped copper plates close to the lower side are connected through power lines, so that a plurality of groups of arc-shaped copper plates are connected in parallel and communicated when being attached to the metal brush plate, and the influence of circuit problems on the continuity of heating and dehumidification is avoided;
the mesh cylinder is positioned at one end of the transmission shaft and communicated with the hollow shaft on the hollow shaft motor, so that the entering nitrogen can be uniformly dispersed, the nitrogen is prevented from entering too intensively, the local humidity is larger, the detection error of the humidity sensor is large, and the motion of the helical blade is influenced;
the two helical blades and the transmission shaft are eccentric, the eccentricity is the same, the direction is opposite, a symmetrical structure can be formed on the two sides of the transmission shaft, the two sides of the transmission shaft are balanced when the transmission shaft rotates, the eccentricity can enable a channel for nitrogen to flow to change intermittently, and the contact time of the nitrogen and the helical blades is prolonged;
the surface of the water-absorbing polyester is provided with honeycomb-shaped embossed patterns, the density of the embossed patterns is gradually increased, the water vapor in nitrogen can be adsorbed by matching with a ceramic heating pipe, the water vapor is temporarily stored through the honeycomb-shaped embossed patterns, the density of the embossed patterns is gradually reduced along with the reduction of the humidity of the nitrogen in the main body cylinder, and the water vapor at positions with less content is stored in order to adapt to the change of the water vapor in the nitrogen;
the inner edge of the spiral blade is provided with a plurality of rectangular grooves at equal intervals, so that airflow in the vertical direction in the main body cylinder can be exchanged, a channel is provided for rising water vapor, and the rising water vapor at the edge begins to condense and adsorb from the uppermost end;
the design of the waist-shaped hole can provide space for the movement of the ceramic heating pipe, and the ceramic heating pipe is prevented from being damaged by stress when being contracted to influence heating and dehumidification;
the purpose of drying and dehumidifying when injecting nitrogen into industrial equipment is achieved.
Has the beneficial effects.
The structure is simple, and the device is convenient and practical.
Secondly, nitrogen can be prevented from directly passing through, and the dehumidification is incomplete.
And thirdly, the nitrogen dehumidification efficiency can be improved.
Drawings
Fig. 1 is a three-dimensional exploded view of an industrial nitrogen dehumidification detection device of the present invention.
In the attached drawings
Wherein the parts are: the device comprises a transmission shaft (1), a humidity sensor (2), a rectangular groove (3), an annular cover plate (4), a hollow shaft motor (5), a fixed support (6), a metal brush plate (7), a limiting block (8), a ceramic heating pipe (9), a waist-shaped hole (10), a helical blade (11), a power supply (12), a gas distribution pipe (13), a main body cylinder (14), a controller (15), a data processor (16), a signal converter (17), a display (18), a temperature sensor (19), an arc-shaped copper plate (20) and a rubber strip (21).
The specific implementation mode is as follows:
the invention relates to an industrial nitrogen dehumidification detection device, which is realized by the following steps: when the device is used, a hollow shaft part of a hollow shaft motor (5) is connected with a nitrogen gas bottle, a gas distributing pipe (13) is respectively connected with a nitrogen gas pipe on the device, a power line on an arc copper plate (20) is connected with a power supply (12), a metal brush plate (7) is contacted with the corresponding arc copper plate (20), a circuit is connected and heated through a ceramic heating pipe (9) to exchange heat with a main body cylinder, then nitrogen gas in the nitrogen gas bottle is injected, the nitrogen gas enters from the hollow shaft motor (5), then is diffused to the periphery from a net basket and is diffused along a spiral blade (11), when the nitrogen gas is diffused along the spiral blade (11), the nitrogen gas is heated in the main body cylinder, the temperature changes, the moisture in the nitrogen gas sinks and is contacted with the surface of the spiral blade (11), meanwhile, a humidity sensor (2) on a transmission shaft (1) detects the humidity of the nitrogen gas, and converts a detection signal through a signal converter (17), the converted signals are transmitted into a data processor (16), operation is carried out according to a preset computer program, when the detected humidity is larger than a set value, numerical value display is carried out on a display (18), a controller (15) controls a hollow shaft motor (5) to rotate, two spiral blades (11) are driven to rotate through a transmission shaft (1), the rotating direction is consistent with the rotating direction of the spiral blades (11), nitrogen is pushed to stir in a main body cylinder through the spiral blades (11), the retention time is increased, the humidity sensor (2) detects the humidity of the nitrogen again, the detection signals are transmitted to a signal converter (17), the signals are transmitted into the data processor (16) through conversion, then judgment is carried out through the data processor (16), when the numerical value is smaller than or equal to a preset value, the hollow shaft motor (5) is stopped through an electromagnetic relay by the controller (15), and make the metal brush board (7) locate at the position of the rubber strip (21), when the helical blade (11) rotates, the metal brush board (7) will contact the rubber strip (21) rotationally, then move along the rubber strip (21), and separate with the corresponding arc copper plate (20), the ceramic heating pipe (9) stops heating, while rotating, the metal brush board (7) is under the rotary centrifugal and magnetic block attraction coaction on the arc copper plate (20), and then is attached to the arc copper plate (20) again, the circuit is connected to heat, as the ceramic heating pipe (9) rotates and heats intermittently, increase the heat exchange with the nitrogen, the temperature sensor (19) detects the temperature in the main body cylinder, and converts the detected signal through the signal converter (17), transmits the converted signal to the data processor (16), and operates according to the preset computer program, when the detected humidity is larger than a set value, the controller (15) controls the hollow shaft motor (5) to deflect, so that the metal brush plate (7) is positioned at the position of the rubber strip (21),
the number of the rubber strips (21) is even, a group of arc-shaped copper plates (20) is arranged between every two adjacent rubber strips (21), the even number of the rubber strips (21) can form symmetrical blocking on the inner wall of the main body cylinder (14), intermittent connection and disconnection are formed by matching with the rotation of the hollow shaft motor (5), intermittent heating exchange is carried out on nitrogen, and moisture in the nitrogen is dried;
the arc copper plate (20) is equidistantly provided with a plurality of magnetic blocks, and the metal brush plate (7) extruded and retreated by the rubber strip (21) can be reset by matching with centrifugal force in the rotating process, so that the metal brush plate (7) is attached to the arc copper plate (20) to form intermittent heating;
the plurality of arc-shaped copper plates (20) close to the upper side are connected through power lines, and the plurality of arc-shaped copper plates (20) close to the lower side are connected through power lines, so that a plurality of groups of arc-shaped copper plates (20) are connected in parallel and are communicated when being attached to the metal brush plate (7), and the influence of circuit problems on the continuity of heating and dehumidification is avoided;
the mesh cylinder is positioned at one end of the transmission shaft (1) and communicated with the hollow shaft on the hollow shaft motor (5), so that the entering nitrogen can be uniformly dispersed, the nitrogen is prevented from entering too intensively, the local humidity is large, the detection error of the humidity sensor (2) is large, and the motion of the helical blade (11) is influenced;
the two helical blades (11) and the transmission shaft (1) are eccentric, the eccentricity is the same and the direction is opposite, a symmetrical structure can be formed on two sides of the transmission shaft (1), so that two sides of the transmission shaft (1) are balanced when rotating, and the eccentricity can enable a channel through which nitrogen flows to change intermittently, and the contact time of the nitrogen and the helical blades (11) is prolonged;
the surface of the water-absorbing polyester is provided with honeycomb-shaped embossed patterns, the density of the embossed patterns is gradually increased, the water vapor in nitrogen can be adsorbed by matching with a ceramic heating pipe (9), the water vapor is temporarily stored through the honeycomb-shaped embossed patterns, the density of the embossed patterns is gradually reduced along with the reduction of the humidity of the nitrogen in the main body cylinder, and the water vapor at the position with less content is stored in order to adapt to the change of the water vapor in the nitrogen;
the inner edge of the spiral blade (11) is provided with a plurality of rectangular grooves (3) at equal intervals, airflow in the vertical direction in the main body cylinder can be exchanged, a channel is provided for rising water vapor, and the rising water vapor at the edge begins to condense and adsorb from the uppermost end;
the design of the waist-shaped hole (10) can provide a space for the movement of the ceramic heating pipe (9), and the phenomenon that the heating and dehumidification are affected due to the damage of stress when the ceramic heating pipe (9) contracts is avoided;
the purpose of drying and dehumidifying when injecting nitrogen into industrial equipment is achieved.
Claims (6)
1. The utility model provides an industry nitrogen gas dehumidification detection device which characterized by: the dehumidifying device comprises a main body fixing device and a dehumidifying detection device, wherein the main body fixing device comprises an annular cover plate, a hollow shaft motor, a fixing bracket, a gas distribution pipe, a main body cylinder, a transmission shaft, arc-shaped copper plates and rubber strips, the annular cover plate is arranged on the main body cylinder, the edge position of the annular cover plate is sealed by welding, the main body cylinder is a cylindrical container, the side wall of the main body cylinder is provided with a plurality of gas distribution pipes which are communicated with the inside of the main body cylinder, the inner wall of the main body cylinder is provided with a plurality of rubber strips at equal intervals, a group of arc-shaped copper plates are arranged between every two adjacent rubber strips, a plurality of magnetic blocks are arranged on the arc-shaped copper plates at equal intervals, the arc-shaped copper plates are distributed in a group from top to bottom, the arc-shaped copper plates on the upper side are connected through power lines, the arc-shaped copper plates on the lower, and is positioned in the main body cylinder, the dehumidification detection device is composed of a humidity sensor, rectangular grooves, metal brush plates, a limiting block, a ceramic heating pipe, a waist-shaped hole, helical blades, a power supply, a controller, a data processor, a signal converter, a display and a temperature sensor, wherein the two helical blades are arranged on a transmission shaft at equal angles, the two helical blades and the transmission shaft have eccentricity, the eccentricity is the same as and opposite to each other, a plurality of rectangular grooves are formed in the inner edge of each helical blade at equal intervals, a plurality of waist-shaped holes are arranged on the helical blades and positioned at the farthest ends of the helical blades, the waist-shaped holes are overlapped up and down, the ceramic heating pipe correspondingly penetrates through the waist-shaped hole and is limited and fixed through a limiting ring, the outer edge of the ceramic heating pipe is provided with two metal brush plates which are respectively contacted with an arc-shaped copper plate, a plurality of humidity sensors are, the temperature sensor is arranged at the other end of the transmission shaft and connected with the signal converter, the data processor is arranged on the main body cylinder and connected with the signal converter, the controller is arranged on the main body cylinder and connected with the data processor, the display is arranged on the main body cylinder and connected with the controller, the power supply is arranged on the main body cylinder and connected with the controller, and the controller is connected with the electromagnetic relay on the hollow shaft motor.
2. The industrial nitrogen dehumidification detecting device as claimed in claim 1, wherein the number of the rubber strips is even.
3. The industrial nitrogen dehumidification detecting device as claimed in claim 1, wherein a plurality of magnetic blocks are equidistantly arranged on the arc-shaped copper plate, and during rotation, the metal brush plate pressed and retreated by the rubber strip is reset in cooperation with centrifugal force, so that the metal brush plate and the arc-shaped copper plate are attached to form intermittent heating.
4. The industrial nitrogen dehumidification detecting device as claimed in claim 1, wherein a mesh cylinder is disposed at one end of the transmission shaft and is communicated with a hollow shaft of a hollow shaft motor.
5. The industrial nitrogen dehumidification detecting device as claimed in claim 4, wherein a layer of water-absorbing polyester is disposed on both upper and lower surfaces of the spiral blade.
6. The industrial nitrogen dehumidification detecting device as claimed in claim 5, wherein the surface of the water-absorbing polyester is embossed in honeycomb shape, and the density of the embossing is gradually increased.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711173217.2A CN107885247B (en) | 2017-11-22 | 2017-11-22 | Industrial nitrogen gas dehumidification detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711173217.2A CN107885247B (en) | 2017-11-22 | 2017-11-22 | Industrial nitrogen gas dehumidification detection device |
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| CN107885247A CN107885247A (en) | 2018-04-06 |
| CN107885247B true CN107885247B (en) | 2020-04-21 |
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| CN201711173217.2A Active CN107885247B (en) | 2017-11-22 | 2017-11-22 | Industrial nitrogen gas dehumidification detection device |
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| CN110585844A (en) * | 2019-10-12 | 2019-12-20 | 杭州临安清云环保设备有限公司 | Plastic granulation waste gas treatment system and waste gas treatment process |
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| GB1310507A (en) * | 1969-05-28 | 1973-03-21 | Apv Co Ltd | Heat treatment of flowable solids |
| CN204601649U (en) * | 2015-03-02 | 2015-09-02 | 河北国晨化工有限公司 | A kind of distillation still with backflow cleaning device of producing in pivaloyl chloride technique |
| CN205332718U (en) * | 2015-12-30 | 2016-06-22 | 李世杰 | A medicinal material vacuum drying section of thick bamboo |
| CN205655601U (en) * | 2016-05-24 | 2016-10-19 | 山东科技大学 | Novel efficient dry material device |
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Effective date of registration: 20200324 Address after: 210000 No. 118 West Road, Changlu Street Park, Jiangbei New District, Nanjing City, Jiangsu Province Applicant after: Nanjing Baoya Gas Co.,Ltd. Address before: 221000 Co-innovation Block F, Science Park, China University of Mining and Technology, Jiefangnan Road, Quanshan District, Xuzhou City, Jiangsu Province Applicant before: XUZHOU XINNANHU TECHNOLOGY Co.,Ltd. |
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Denomination of invention: An industrial nitrogen dehumidification detection device Effective date of registration: 20220330 Granted publication date: 20200421 Pledgee: Zijin Trust Co.,Ltd. Pledgor: Nanjing Baoya Gas Co.,Ltd. Registration number: Y2022980003528 |
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Date of cancellation: 20230421 Granted publication date: 20200421 Pledgee: Zijin Trust Co.,Ltd. Pledgor: Nanjing Baoya Gas Co.,Ltd. Registration number: Y2022980003528 |