CN209841903U - Capacity detection device for air flow rate - Google Patents
Capacity detection device for air flow rate Download PDFInfo
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- CN209841903U CN209841903U CN201920640472.1U CN201920640472U CN209841903U CN 209841903 U CN209841903 U CN 209841903U CN 201920640472 U CN201920640472 U CN 201920640472U CN 209841903 U CN209841903 U CN 209841903U
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Abstract
The utility model belongs to the technical field of air flow rate detection technique and specifically relates to a capacity detection device of air flow rate is related to. The technical scheme of the utility model is realized like this: a capacity detection device of air flow rate is characterized in that: comprises a flow rate detection box, an air leakage detection box, a flow limiting device and a filtering device for filtering large particles in air; the flow velocity detection box is arranged in the inner cavity of the air leakage detection box, an air storage cavity is formed between the flow velocity detection box and the air leakage detection box, an air inlet of the flow velocity detection box is communicated with an air outlet of the flow limiting device, and an air outlet of the flow velocity detection box penetrates through the side wall of the air leakage detection box and extends outwards to form a detection port; and the air inlet of the flow limiting device is communicated with the filtering device through a blocking pipeline. The utility model discloses an novelty and practicality are strong, can the effectual wind speed that detects the air compressor machine air intake, improve the production quality of air compressor machine.
Description
Technical Field
The utility model belongs to the technical field of air flow rate detection technique and specifically relates to a capacity detection device of air flow rate is related to.
Background
The air compressor product is the basic industry of national economy, has a close and indiscriminate relationship with national defense, petroleum, chemical industry, medicine, food, urban construction, traffic, general industry and mining industry, and is one of indispensable main power equipment of most other industry enterprises. Therefore, the detection equipment of the air compressor is needed, and market research finds that the existing air compressor detection equipment cannot detect the air flow rate in unit time and unit volume of the air inlet of the air compressor, the flow detection of the air inlet of the air compressor can intuitively reflect the working efficiency and the air compression quality of the air compressor, and the working efficiency of the air compressor can be influenced by knowing the air temperature, the air pressure of air to be detected and the air quality, so that a volume detection device capable of simulating the air flow rate of environmental variables such as air temperature, air pressure, air quality, conventional air flow rate and the like needs to be developed, and the detection method description is provided.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art existence, the utility model aims to provide an air flow rate's capacity detection device.
The technical scheme of the utility model is realized like this: a capacity detection device of air flow rate is characterized in that: comprises a flow rate detection box, an air leakage detection box, a flow limiting device and a filtering device for filtering large particles in air; the flow velocity detection box is arranged in the inner cavity of the air leakage detection box, an air storage cavity is formed between the flow velocity detection box and the air leakage detection box, an air inlet of the flow velocity detection box is communicated with an air outlet of the flow limiting device, and an air outlet of the flow velocity detection box penetrates through the side wall of the air leakage detection box and extends outwards to form a detection port; and the air inlet of the flow limiting device is communicated with the filtering device through a blocking pipeline.
Preferably: the flow velocity detection box comprises a box body and a flow velocity flowmeter; the flow velocity flowmeter is arranged on an air outlet of the box body; the inner cavity of the box body forms a first chamber, a second chamber, a third chamber and a fourth chamber positioned at the bottoms of the three chambers through a transverse partition plate and a longitudinal partition plate; the first chamber, the second chamber and the third chamber are communicated with the fourth chamber, and the communication ports are provided with stop valves; the heating plate is fixedly installed on the inner wall of the third cavity, the cooler is fixedly installed on the inner wall of the second cavity, and the fourth cavity is communicated with the air outlet of the flow limiting device.
Preferably: the gas leakage detection box is provided with an inflation interface and an air outlet interface which are communicated with the gas storage cavity, the inflation interface is provided with a sealing detection device, the sealing detection device comprises an air pressure monitoring device which is connected with the inflation interface through an external pressure control valve, and the air outlet interface is provided with a valve for controlling the on-off of air flow.
Preferably: the flow limiting device comprises a flow limiting box, a butterfly valve and a control unit, wherein the butterfly valve is arranged in the inner cavity of the flow limiting box and used for controlling the air flow; the flow limiting box is communicated with the flow velocity detection box, a flow velocity flowmeter is installed on the outer side wall of the communication port, and the control unit is fixedly installed on the side wall of the flow limiting box.
Preferably: the filtering device comprises an air box, a dust hopper, a filter bag, an air extracting device, a pulse blowing device for blowing the filter bag and a control module fixedly arranged on the outer wall of the air box; the air outlet of the air box is communicated with the blocking pipeline; the dust hopper is fixedly arranged at the bottom of the air box and communicated with the inner cavity of the air box, the filter bag is arranged at the top of the air box, and the pulse blowing device is fixedly arranged at the top of the air box; the air extractor is arranged in the air exhaust opening of the air box.
Preferably: the pulse blowing device comprises a pulse air pump fixedly arranged on the air box, an inflation chamber arranged on the air box and used for providing air for the pulse air pump, a plurality of air guide pipes and an air nozzle matched with the air guide pipes; the output end of the pulse air pump is fixedly connected with the air entraining pipe, and one end, far away from the pulse air pump, of the air entraining pipe penetrates through the side wall of the air box and extends to the inside of the filter bag to be fixedly connected with the air tap.
Preferably: the air extracting device comprises a driving motor, an exhaust fan and an air supply pipe; the exhaust fan is electrically connected with the driving motor, the exhaust fan is communicated with the inner cavity of the air box through an air supply pipe, and a branch pipe communicated with the air supply pipe is arranged on the side wall of the air supply pipe; the branch pipe is communicated with the plenum chamber, and a stop valve for controlling the on-off of the air flow is arranged on the branch pipe.
Preferably: the inner cavity of the blocking pipeline is provided with a plurality of same blocking walls, and the blocking walls are alternately arranged up and down at equal intervals; the length L1 of each set of partition walls is less than the diameter phi of the baffle pipes.
The utility model discloses the beneficial effect who brings does: through being provided with the velocity of flow detection case, the velocity of flow flowmeter in the velocity of flow detection case, can be accurate specific detect out the air flow in the concrete unit interval of air compressor machine gas outlet, the air compression efficiency of understanding the air compressor machine that can be accurate to this and standard flow relative ratio, in order to reach the effect of carrying out the inspection to the air compressor machine quality, improve the production quality of air compressor machine indirectly.
1. Through being provided with first cavity in the flow rate detection case, internally mounted has the second cavity of cooler, the third cavity and the fourth cavity of internally mounted has the hot plate, the air of external entering fourth cavity then passes through the stop valve on first cavity, second cavity, the third cavity earlier, the temperature that realizes getting into the air compressor machine is different, the air of the outdoor different temperatures of simulation, the accuracy of improvement detection data, further improvement air compressor machine's quality.
2. Through being provided with the gas leakage detection case, form the gas storage chamber between gas leakage detection case and the velocity of flow detection case, fill quantitative gas into the gas storage chamber, the atmospheric pressure monitoring device on the gas leakage detection case can real time monitoring gas storage tank inside atmospheric pressure value this moment, compares it with the standard value, and whether the inspection velocity of flow detection case can have the leakage problem, further improves the accuracy of the air compressor machine gas outlet specific unit interval's air mass flow's detected value, indirectly improves product quality.
3. The flow rate of air is controlled by controlling the opening size of the inner cavity of the flow limiting box through the control unit in the flow limiting device, so that air compressors with different powers can be handled, and the practicability of the capacity detection device of the air flow rate is improved.
4. Be provided with filter equipment, the air is after the air exhauster air suction inlet case, and filter bag can prevent among the filter equipment in the solid particle thing entering separation pipeline in the air to blow the solid particle thing via the pulse blow device and blow to the dirt fill in, can prevent that the solid particle thing in the air from influencing and getting into the velocity of flow detection case, arouse the inaccurate problem of detected data.
5. Be provided with the branch pipe, the blast pipe intercommunication each other of branch pipe one end and air exhauster to the plenum chamber intercommunication in the other end of branch pipe and the pulse blow device, the air current in the plenum chamber is not enough, and the stop valve on the branch pipe is opened, and the wind in the blast pipe of air exhauster has some to carry in the branch pipe, regularly for the plenum chamber in the pulse blow-out device provides the supply, realizes the effect of recycling.
6. The separation pipeline inner chamber is provided with a plurality of the same and equidistant separating walls that set up in turn from top to bottom, and such mode can restrict the velocity of flow that the air got into the current-limiting incasement, prevents that the too fast air of velocity of flow from blowing the butterfly valve of current-limiting incasement, causes butterfly valve case fatigue, influences the current-limiting effect.
The utility model discloses a concrete theory of operation: firstly, a leakage detection box performs leakage detection, quantitative air is input along an inflation interface outside the leakage detection box, then an air pressure monitoring device on the outer wall of the leakage detection box detects the air pressure value inside an air storage cavity, the air pressure value at the moment is compared with a standard air pressure value inside the air storage cavity, and whether the flow speed detection box leaks air or not is observed; secondly, air is pumped into the air box through an exhaust fan, after being filtered by a filter bag in the air box, solid particles are blown into a dust hopper through a pulse blowing device, the air enters a blocking pipeline, the air flow rate is reduced by a blocking wall in the blocking pipeline and then enters a flow limiting box, a butterfly valve in the flow limiting box further limits the air flow rate entering the flow rate detection box, the air enters a fourth chamber in the flow rate detection box for taking, at the moment, a stop valve in a first chamber at normal temperature is opened, a stop valve in a second chamber at low temperature and a stop valve in a third chamber at high temperature are closed, an air compressor works, and the normal temperature air entering an air inlet of the air compressor is detected by a flow rate meter and is recorded; after the normal temperature air flow rate is detected, closing the stop valves of the first chamber and the third chamber, opening the stop valve of the second chamber, working the air compressor, and detecting and recording low temperature air entering an air inlet of the air compressor by the flow rate meter; after the low-temperature air flow rate is detected, closing the stop valves of the first cavity and the second cavity, opening the stop valve of the third cavity, working the air compressor, and detecting and recording high-temperature air entering an air inlet of the air compressor by the flow rate meter; and finally, comparing the recorded data with data in a standard database, and judging whether the air compressor is qualified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural view of an embodiment of the present invention;
FIG. 2 is a schematic view of a flow rate detection box;
FIG. 3 is a schematic structural view of a seal detection device;
FIG. 4 is a schematic view of the structure of the filter device;
FIG. 5 is a schematic view of the pulse blowing apparatus and the gas evacuation apparatus.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-5, the present invention discloses a volume detection device for air flow rate, which comprises a flow rate detection box 1, an air leakage detection box 2, a flow limiting device 3 and a filtering device 4 for filtering large particles in air; the flow velocity detection box 1 is arranged in an inner cavity of the air leakage detection box 2, an air storage cavity 5 is formed between the flow velocity detection box 1 and the air leakage detection box 2, an air inlet of the flow velocity detection box 1 is communicated with an air outlet of the flow limiting device 3, and the air outlet of the flow velocity detection box 1 penetrates through the side wall of the air leakage detection box 2 and extends outwards to form a detection port 6; the air inlet of the flow limiting device 3 is communicated with the filtering device 4 through a blocking pipeline 7.
In the embodiment of the present invention, the flow rate detection box 1 includes a box body 11 and a flow rate meter 12; the flow velocity flowmeter 12 is arranged on an air outlet of the box body 11; the inner cavity of the box body 11 is formed into a first chamber 15, a second chamber 16, a third chamber 17 and a fourth chamber 18 positioned at the bottom of the three chambers through a transverse partition plate 13 and a longitudinal partition plate 14; the first chamber 15, the second chamber 16 and the third chamber 17 are all communicated with the fourth chamber 18, and the communication ports are all provided with stop valves 19; the heating plate 151 is fixedly mounted on the inner wall of the third chamber 17, the cooler 161 is fixedly mounted on the inner wall of the second chamber 16, and the fourth chamber 18 is communicated with the air outlet of the flow limiting device 3.
The utility model discloses an in the embodiment, be provided with the interface 21 of aerifing and the interface 22 of giving vent to anger that communicate with gas storage chamber 5 on the gas leakage detection case 2, the interface 21 department of aerifing is equipped with sealed detection device 211, sealed detection device 211 include the atmospheric pressure monitoring device 213 of being connected with the interface 21 of aerifing through external pressure control valve 212, be equipped with the valve 221 that is used for controlling the air current break-make on the interface 22 of giving vent to anger.
In the embodiment of the present invention, the flow limiting device 3 includes a flow limiting box 31, a butterfly valve 32 disposed in an inner cavity of the flow limiting box 31 for controlling air flow, and a control unit 33; the flow limiting box 31 is communicated with the flow speed detection box 1, a flow speed meter 34 is installed on the outer side wall of the communication port, and the control unit 33 is fixedly installed on the side wall of the flow limiting box 31.
In the embodiment of the present invention, the filtering device 4 includes an air box 41, a dust hopper 42, a filter bag 43, an air extracting device 44, a pulse blowing device 45 for blowing the filter bag 43, and a control module 46 fixedly installed on the outer wall of the air box 41; the air outlet of the air box 41 is communicated with the blocking pipeline 7; the dust hopper 42 is fixedly arranged at the bottom of the air box 41 and is communicated with the inner cavity of the air box 41, the filter bag 43 is arranged at the top of the air box 41, and the pulse blowing device 45 is fixedly arranged at the top of the air box 41; the air extractor 44 is mounted in the air outlet of the bellows 41.
In the embodiment of the present invention, the pulse blowing device 45 includes a pulse air pump 451 fixedly installed on the air box 41, a plenum chamber 452 installed on the air box 41 for providing air to the pulse air pump 451, a plurality of bleed air pipes 453, and an air nozzle 454 adapted to the bleed air pipes 453; the output end of the pulse air pump 451 is fixedly connected with the bleed air pipe 453, and one end of the bleed air pipe 453, which is far away from the pulse air pump 451, penetrates through the side wall of the bellows 41, and extends into the filter bag 43 to be fixedly connected with the air nozzle 454.
In the embodiment of the present invention, the air extracting device 44 includes a driving motor 441, an exhaust fan 442 and an air supply pipe 443; the exhaust fan 442 is electrically connected with the driving motor 441, the exhaust fan 442 is communicated with the inner cavity of the air box 41 through an air supply pipe 443, and a branch pipe 444 communicated with the air supply pipe 443 is arranged on the side wall of the air supply pipe 443; the branch pipe 444 is communicated with the inflation chamber 452, and a stop valve 445 for controlling the on-off of the air flow is arranged on the branch pipe 444.
In the specific embodiment of the present invention, the inner cavity of the blocking pipe 7 is provided with a plurality of identical blocking walls 71, and the blocking walls 71 are alternately arranged up and down at equal intervals; the length L1 of each set of partition walls 71 is smaller than the diameter phi of the baffle pipes 7.
The utility model discloses the beneficial effect who brings does: through being provided with the velocity of flow detection case, the velocity of flow flowmeter in the velocity of flow detection case, can be accurate specific detect out the air flow in the concrete unit interval of air compressor machine gas outlet, the air compression efficiency of understanding the air compressor machine that can be accurate to this and standard flow relative ratio, in order to reach the effect of carrying out the inspection to the air compressor machine quality, improve the production quality of air compressor machine indirectly.
1. Through being provided with first cavity in the flow rate detection case, internally mounted has the second cavity of cooler, the third cavity and the fourth cavity of internally mounted has the hot plate, the air of external entering fourth cavity then passes through the stop valve on first cavity, second cavity, the third cavity earlier, the temperature that realizes getting into the air compressor machine is different, the air of the outdoor different temperatures of simulation, the accuracy of improvement detection data, further improvement air compressor machine's quality.
2. Through being provided with the gas leakage detection case, form the gas storage chamber between gas leakage detection case and the velocity of flow detection case, fill quantitative gas into the gas storage chamber, the atmospheric pressure monitoring device on the gas leakage detection case can real time monitoring gas storage tank inside atmospheric pressure value this moment, compares it with the standard value, and whether the inspection velocity of flow detection case can have the leakage problem, further improves the accuracy of the air compressor machine gas outlet specific unit interval's air mass flow's detected value, indirectly improves product quality.
3. The flow rate of air is controlled by controlling the opening size of the inner cavity of the flow limiting box through the control unit in the flow limiting device, so that air compressors with different powers can be handled, and the practicability of the capacity detection device of the air flow rate is improved.
4. Be provided with filter equipment, the air is after the air exhauster air suction inlet case, and filter bag can prevent among the filter equipment in the solid particle thing entering separation pipeline in the air to blow the solid particle thing via the pulse blow device and blow to the dirt fill in, can prevent that the solid particle thing in the air from influencing and getting into the velocity of flow detection case, arouse the inaccurate problem of detected data.
5. Be provided with the branch pipe, the blast pipe intercommunication each other of branch pipe one end and air exhauster to the plenum chamber intercommunication in the other end of branch pipe and the pulse blow device, the air current in the plenum chamber is not enough, and the stop valve on the branch pipe is opened, and the wind in the blast pipe of air exhauster has some to carry in the branch pipe, regularly for the plenum chamber in the pulse blow-out device provides the supply, realizes the effect of recycling.
6. The separation pipeline inner chamber is provided with a plurality of the same and equidistant separating walls that set up in turn from top to bottom, and such mode can restrict the velocity of flow that the air got into the current-limiting incasement, prevents that the too fast air of velocity of flow from blowing the butterfly valve of current-limiting incasement, causes butterfly valve case fatigue, influences the current-limiting effect.
The utility model discloses a concrete theory of operation: firstly, a leakage detection box performs leakage detection, quantitative air is input along an inflation interface outside the leakage detection box, then an air pressure monitoring device on the outer wall of the leakage detection box detects the air pressure value inside an air storage cavity, the air pressure value at the moment is compared with a standard air pressure value inside the air storage cavity, and whether the flow speed detection box leaks air or not is observed; secondly, air is pumped into the air box through an exhaust fan, after being filtered by a filter bag in the air box, solid particles are blown into a dust hopper through a pulse blowing device, the air enters a blocking pipeline, the air flow rate is reduced by a blocking wall in the blocking pipeline and then enters a flow limiting box, a butterfly valve in the flow limiting box further limits the air flow rate entering the flow rate detection box, the air enters a fourth chamber in the flow rate detection box for taking, at the moment, a stop valve in a first chamber at normal temperature is opened, a stop valve in a second chamber at low temperature and a stop valve in a third chamber at high temperature are closed, an air compressor works, and the normal temperature air entering an air inlet of the air compressor is detected by a flow rate meter and is recorded; after the normal temperature air flow rate is detected, closing the stop valves of the first chamber and the third chamber, opening the stop valve of the second chamber, working the air compressor, and detecting and recording low temperature air entering an air inlet of the air compressor by the flow rate meter; after the low-temperature air flow rate is detected, closing the stop valves of the first cavity and the second cavity, opening the stop valve of the third cavity, working the air compressor, and detecting and recording high-temperature air entering an air inlet of the air compressor by the flow rate meter; and finally, comparing the recorded data with data in a standard database, and judging whether the air compressor is qualified.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A capacity detection device of air flow rate is characterized in that: comprises a flow rate detection box, an air leakage detection box, a flow limiting device and a filtering device for filtering large particles in air; the flow velocity detection box is arranged in the inner cavity of the air leakage detection box, an air storage cavity is formed between the flow velocity detection box and the air leakage detection box, an air inlet of the flow velocity detection box is communicated with an air outlet of the flow limiting device, and an air outlet of the flow velocity detection box penetrates through the side wall of the air leakage detection box and extends outwards to form a detection port; and the air inlet of the flow limiting device is communicated with the filtering device through a blocking pipeline.
2. The device for detecting the capacity of an air flow rate as claimed in claim 1, wherein: the flow velocity detection box comprises a box body and a flow velocity flowmeter; the flow velocity flowmeter is arranged on an air outlet of the box body; the inner cavity of the box body forms a first chamber, a second chamber, a third chamber and a fourth chamber positioned at the bottoms of the three chambers through a transverse partition plate and a longitudinal partition plate; the first chamber, the second chamber and the third chamber are communicated with the fourth chamber, and the communication ports are provided with stop valves; the heating plate is fixedly installed on the inner wall of the third cavity, the cooler is fixedly installed on the inner wall of the second cavity, and the fourth cavity is communicated with the air outlet of the flow limiting device.
3. The device for detecting the capacity of an air flow rate as claimed in claim 1, wherein: the gas leakage detection box is provided with an inflation interface and an air outlet interface which are communicated with the gas storage cavity, the inflation interface is provided with a sealing detection device, the sealing detection device comprises an air pressure monitoring device which is connected with the inflation interface through an external pressure control valve, and the air outlet interface is provided with a valve for controlling the on-off of air flow.
4. The device for detecting the capacity of an air flow rate as claimed in claim 1, wherein: the flow limiting device comprises a flow limiting box, a butterfly valve and a control unit, wherein the butterfly valve is arranged in the inner cavity of the flow limiting box and used for controlling the air flow; the flow limiting box is communicated with the flow velocity detection box, a flow velocity flowmeter is installed in the communication port, and the control unit is fixedly installed on the side wall of the flow limiting box.
5. The device for detecting the capacity of an air flow rate as claimed in claim 1, wherein: the filtering device comprises an air box, a dust hopper, a filter bag, an air extracting device, a pulse blowing device for blowing the filter bag and a control module fixedly arranged on the outer wall of the air box; the air outlet of the air box is communicated with the blocking pipeline; the dust hopper is fixedly arranged at the bottom of the air box and communicated with the inner cavity of the air box, the filter bag is arranged at the top of the air box, and the pulse blowing device is fixedly arranged at the top of the air box; the air extractor is arranged in the air exhaust opening of the air box.
6. The device for detecting the capacity of an air flow rate as claimed in claim 5, wherein: the pulse blowing device comprises a pulse air pump fixedly arranged on the air box, an inflation chamber arranged on the air box and used for providing air for the pulse air pump, a plurality of air guide pipes and an air nozzle matched with the air guide pipes; the output end of the pulse air pump is fixedly connected with the air entraining pipe, and one end, far away from the pulse air pump, of the air entraining pipe penetrates through the side wall of the air box and extends to the inside of the filter bag to be fixedly connected with the air tap.
7. The device for detecting the capacity of an air flow rate as claimed in claim 6, wherein: the air extracting device comprises a driving motor, an exhaust fan and an air supply pipe; the exhaust fan is electrically connected with the driving motor, the exhaust fan is communicated with the inner cavity of the air box through an air supply pipe, and a branch pipe communicated with the air supply pipe is arranged on the side wall of the air supply pipe; the branch pipe is communicated with the plenum chamber, and a stop valve for controlling the on-off of the air flow is arranged on the branch pipe.
8. The device for detecting the capacity of an air flow rate as claimed in claim 1, wherein: the inner cavity of the blocking pipeline is provided with a plurality of same blocking walls, and the blocking walls are alternately arranged up and down at equal intervals; the length L1 of each set of partition walls is less than the diameter phi of the baffle pipes.
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| CN201920640472.1U CN209841903U (en) | 2019-05-07 | 2019-05-07 | Capacity detection device for air flow rate |
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| CN201920640472.1U CN209841903U (en) | 2019-05-07 | 2019-05-07 | Capacity detection device for air flow rate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031649A (en) * | 2019-05-07 | 2019-07-19 | 衢州职业技术学院 | A kind of capacity checking apparatus and its detection method of air velocity |
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2019
- 2019-05-07 CN CN201920640472.1U patent/CN209841903U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031649A (en) * | 2019-05-07 | 2019-07-19 | 衢州职业技术学院 | A kind of capacity checking apparatus and its detection method of air velocity |
| CN110031649B (en) * | 2019-05-07 | 2023-10-27 | 衢州职业技术学院 | Air flow velocity capacity detection device and detection method thereof |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Quzhou Ruida metal products Co.,Ltd. Assignor: QUZHOU College OF TECHNOLOGY Contract record no.: X2022330000944 Denomination of utility model: A capacity detection device for air flow rate Granted publication date: 20191224 License type: Common License Record date: 20221229 Assignee: ZHEJIANG JUSHAN MACHINERY Co.,Ltd. Assignor: QUZHOU College OF TECHNOLOGY Contract record no.: X2022330000945 Denomination of utility model: A capacity detection device for air flow rate Granted publication date: 20191224 License type: Common License Record date: 20221229 Assignee: Zhongbaoke Rail Transit Group Co.,Ltd. Assignor: QUZHOU College OF TECHNOLOGY Contract record no.: X2022330000943 Denomination of utility model: A capacity detection device for air flow rate Granted publication date: 20191224 License type: Common License Record date: 20221229 Assignee: ZHEJIANG QUZHOU SHANGPIN MACHINERY Co.,Ltd. Assignor: QUZHOU College OF TECHNOLOGY Contract record no.: X2022330000941 Denomination of utility model: A capacity detection device for air flow rate Granted publication date: 20191224 License type: Common License Record date: 20221229 Assignee: Zhejiang Xiangrui Electromechanical Equipment Co.,Ltd. Assignor: QUZHOU College OF TECHNOLOGY Contract record no.: X2022330000942 Denomination of utility model: A capacity detection device for air flow rate Granted publication date: 20191224 License type: Common License Record date: 20221229 |
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