CN213875570U - Gas detection gas hood - Google Patents
Gas detection gas hood Download PDFInfo
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- CN213875570U CN213875570U CN202021920892.4U CN202021920892U CN213875570U CN 213875570 U CN213875570 U CN 213875570U CN 202021920892 U CN202021920892 U CN 202021920892U CN 213875570 U CN213875570 U CN 213875570U
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Abstract
The utility model provides a gaseous gas detection cover, including the cover of ventilating, the one end of the cover of ventilating is equipped with air inlet joint, and the other end of the cover of ventilating is equipped with the joint of giving vent to anger, just along air inlet joint to the joint direction processing of giving vent to anger at the upper surface of the cover of ventilating has 2 at least recesses. Install gas sensor on the recess, gas sensor installs alone through fixed subassembly respectively on ventilating the cover, and detects the chamber between recess and the gas sensor lower surface, and gas sensor is used for detecting the pollutant gas concentration in the monitoring gas on the gas detection way. The utility model discloses a gaseous gas detection cover simple structure, installation are reliable, cover through will be no less than 2 gas sensor alone and set gradually ventilating, can in time discover gas sensor's trouble, carry out quick accurate dismantlement, have promoted efficiency greatly, simultaneously, avoid causing the influence to other gas sensor.
Description
Technical Field
The utility model relates to a gaseous monitoring devices technical field specifically is a gaseous gas hood that detects.
Background
At present, with the rapid development of industry and transportation industry, a large amount of atmospheric pollutants are discharged into the air, which causes pollution of the atmospheric environment. Meanwhile, with the continuous development of society, the living standard of people is also continuously improved, and people pay more and more attention to the air quality of the environment, so that the development and the application of the gas monitoring device are more and more common.
The environmental gas monitoring mainly monitors particulate matters with a certain diameter range in the environmental air and pollutant gas, for example, the particulate matters mainly monitor the concentration of PM2.5/PM10, and the pollutant gas mainly measures TVOC, CO and SO2、NO2、O3、H2S, etc.
The gas sensor of present environmental gas monitoring system mostly installs alone in detecting the gas circuit for the connected node that detects the gas circuit in the monitoring system is many, the structure is complicated, makes detecting system's installation more complicated, and appears the condition of connected node gas leakage easily, and difficult the maintenance and the problem of maintenance inefficiency seriously influence monitoring devices's use. Meanwhile, the monitoring system is large in size and weight and inconvenient to move or carry.
At present, also have with a plurality of sensors with on the cover is ventilated to holistic structure fastening installation, though it can simplify the connection that detects the gas circuit, reduce monitoring system's volume and weight, but when one of them sensor broke down in the structure, can't be to the accurate location of the sensor of trouble, need dismantle the device of troubleshooting damage one by one with its whole back, take time long and inefficiency.
Accordingly, there is a need for improvements to gas sensing gas shields in existing ambient gas monitoring systems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems of complex structure and large volume of the monitoring system caused by independently installing a plurality of gas sensors on the air detection gas path; or with a plurality of gas sensor with a monolithic mounting on the air detection gas circuit, on one of them gas sensor broke down, can't be to its accurate location need with its whole device of troubleshooting after dismantling the device that breaks down one by one, waste time and energy, inefficiency, and make the poor problem of detection gas circuit leakproofness easily. On this basis, the utility model provides a simple structure, installation are reliable, can independently dismantle each gas sensor's gaseous gas detection cover.
The utility model discloses gaseous detection gas hood's design is, through respectively installing a plurality of gas sensor alone on ventilating the cover, when test or use link discovery certain gas sensor and the junction of ventilating the cover sealed or the installation effect is not good, can dismantle it alone, has avoided influencing other gas sensor's sealed and installation effect, ensures the degree of accuracy of each gas sensor testing result of gaseous detection gas hood.
The technical scheme for realizing the purpose of the utility model is as follows: the utility model provides a gaseous gas detection cover, is equipped with the air connector including the cover of ventilating, the one end of the cover of ventilating, and the other end of the cover of ventilating is equipped with the joint of giving vent to anger, and the upper surface of the cover of ventilating and along air connector to giving vent to anger joint direction processing have 2 at least recesses, between air connector and the recess, between the adjacent recess, between recess and the joint of giving vent to anger all through being located the gas circuit pipeline intercommunication of the cover of ventilating and forming the detection gas circuit of monitoring gas.
Install gas sensor on the recess, gas sensor installs on ventilating the cover through fixed subassembly respectively, and detects the chamber between recess and the gas sensor lower surface, and gas sensor is used for detecting the pollutant gas concentration in the monitoring gas on the gas detection way.
The utility model discloses a to be no less than 2 gas sensor and alone and set gradually and cover ventilating, can in time discover gas sensor's trouble, carry out quick accurate dismantlement, promoted efficiency greatly, simultaneously, avoid causing the influence to other gas sensor.
Further, as the improvement to recess and gas sensor, the recess of gas sensor structure is cylindrical recess, and gas sensor is cylindrical gas sensor, and the detection chamber that forms between cylindrical gas sensor's the lower surface and the bottom of cylindrical recess is cylindrical detection chamber, and the accuracy that pollutant gas concentration detected can be ensured to the setting in cylindrical detection chamber.
In a preferred embodiment of the present invention, the cylindrical recess includes a first cylindrical recess, a set of symmetrical holes are formed on the inner wall of the first cylindrical recess, the holes are communicated with the gas circuit pipeline, and the centers of the gas circuit pipeline, the holes and the first cylindrical recess are all on the same horizontal line. The lower part of the cylindrical gas sensor is of a boss structure, a boss at the lower part of the cylindrical gas sensor is inserted into the first cylindrical groove, and a cylindrical detection cavity is enclosed between the bottom wall of the first cylindrical groove, the lower surface of the boss of the gas sensor and the peripheral wall of the first cylindrical groove.
Due to the arrangement of the structure, on one hand, the path of the detection gas path can be shortened, and the detection efficiency is improved; on the other hand can make the gaseous evenly distributed that is detected who gets into in the first cylindrical recess detect the intracavity, can further improve the precision that pollutant gas concentration detected.
As the improvement to the cylindrical grooves, a second cylindrical groove which is coaxial with the first cylindrical groove is processed on the periphery of the first cylindrical groove, and a sealing gasket is sleeved on the periphery of a boss of the cylindrical gas sensor. When the cylindrical gas sensor is mounted in the first cylindrical groove, the sealing washer is in close contact with the outer wall and the bottom wall of the second cylindrical groove. When the gas sensor is arranged in the groove of the ventilation cover, the sealing gasket seals the contact part of the sealing gasket, so that the sealing performance is improved, the gas sensor is prevented from impacting in a detection cavity or the monitoring system is prevented from moving, the sealing performance of the installation position of the gas sensor and the groove is prevented from being influenced, the gas leakage phenomenon is generated, and the detection result is influenced.
In a preferred embodiment of the present invention, a block is disposed in the first cylindrical recess, the bottom and the front and rear ends of the block are connected to the first cylindrical recess, and a space is formed between the left and right ends of the block and the hole.
When the gas sensor is installed in the groove, the upper surface of the blocking block is in close contact with the lower surface of the gas sensor, and the gas sensor, the first cylindrical groove and the blocking block enable the detection cavity to form an inverted U-shaped detection cavity.
Wherein, as the improvement to the fixed subassembly of above-mentioned gas detection gas hood, the fixed subassembly includes 2 sensor pillars at least.
Further, fixed subassembly still includes the gland that is located gas sensor upper end, and gland and pillar subassembly are with gas sensor and ventilation cover fixed connection.
The process of the fixing component for installing and fixing the gas sensor on the ventilation cover is as follows: firstly, placing a gas sensor on a groove on a ventilation cover, secondly, placing a gland on the upper end of the gas sensor, and enabling a through hole on the gland to correspond to a sensor support; finally, the gas sensor is mounted on the ventilation cover by pressing with screws.
Further, as an improvement to the fixing assembly, a structural gap is provided between the top of the sensor support and the lower surface of the gland. The setting in structure clearance, when can fixing the gland on the sensor pillar, gas sensor pushes down to have downward pressure to seal ring, makes seal ring take place elastic deformation, makes the in close contact with between gas sensor and the cover of ventilating reach sealed effect.
Further, the gas sensor comprises a TVOC gas sensor and an SO2Gas sensor, O3Gas sensor, NO2The TVOC gas sensor is used for measuring the concentration of TVOC (total volatile organic compounds, which refer to organic compounds with saturated vapor pressure exceeding 133.32pa at room temperature, the boiling point of the organic compounds is 50-250 ℃, and the organic compounds can be evaporated in the air at room temperature) in monitored gas; SO (SO)2Gas sensor for measuring SO in monitored gas2The concentration of (c); o is3Gas sensor for measuring O in monitored gas3The concentration of (c); NO2Gas sensor for determining NO in monitored gas2The concentration of (c); the CO gas sensor is used for measuring the concentration of the CO gas sensor in the monitored gas; for determining the concentration of CO in the gas being monitored.
Furthermore, as an improvement on the ventilation hood, in order to facilitate the installation of other modules of the gas detection hood and the monitoring system, the gas inlet joint and the gas outlet joint of the ventilation hood are both pagoda joints.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an install each sensor alone and in proper order on the cover of ventilating, when discovery gas sensor gas leakage or other trouble, the accurate dismantlement of realization that can be rapid accurate, and to other gas sensor's influence when having avoided dismantling.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below. It should be apparent that the drawings in the following description are only for the purpose of illustrating the embodiments of the present invention or the technical solutions in the prior art more clearly, and that other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a perspective view of the gas detecting cover of the present invention;
FIG. 2 is a top view of the gas detection enclosure of the present invention;
FIG. 3 is a cross-section of the gas detecting cover of the present invention;
wherein, 1, a ventilation cover; 2. an air inlet joint; 3. an air outlet joint; 5. a gas sensor; 51. blocking; 52. an air inlet pipe; 53. an air outlet pipe; 54. a detection chamber; 6. a sealing gasket; 7. a fixing assembly; 8. a gland; 9. a sensor support; 10. a screw; 100. a groove; 101. a first cylindrical recess; 102. a second cylindrical recess; 103. blocking; 200. a gas path pipeline; 300. and (4) a hole.
Detailed Description
The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
Example 1:
referring to fig. 1-3, in the present embodiment, a gas detecting hood includes a ventilation hood 1, an air inlet connector 2 is disposed at one end of the ventilation hood 1, an air outlet connector 3 is disposed at the other end of the ventilation hood 1, at least 2 grooves 100 are formed on the upper surface of the ventilation hood 1 along the direction from the air inlet connector 2 to the air outlet connector 3, and the air inlet connector 2 and the grooves 100, the adjacent grooves 100, and the grooves 100 and the air outlet connector 3 are all communicated with each other through an air path pipeline 200 located in the ventilation hood 1 to form a gas detecting path for a gas to be monitored.
Install gas sensor 5 on the recess 100, gas sensor 5 installs alone on ventilating cover 1 through fixed subassembly 7 respectively, and detects the chamber between recess 100 and the gas sensor 5 lower surface, and gas sensor 5 is arranged in detecting the pollutant gas concentration in the monitoring gas on the gas circuit. The gas sensor 5 is used for detecting the concentration of pollutant gas in the monitored gas in the gas path pipeline 200, and the gas sensor circuit board is used for converting the chemical signal of the concentration of the monitored gas detected by the gas sensor 5 into an electric signal.
In this embodiment, in order to facilitate the installation of the gas detection hood and other modules of the monitoring system, the gas inlet connector 2 and the gas outlet connector 3 of the ventilation hood 1 are both pagoda connectors.
In this embodiment, the ventilation hood 1 is made of teflon, and teflon has no pungent odor, and does not affect the detection result of the monitored gas, and does not cause secondary pollution to the monitored gas. Meanwhile, the polytetrafluoroethylene has the characteristics of good chemical stability, corrosion resistance, sealing property, electrical insulation property and the like, and can prolong the service life of the ventilation hood 1.
In the present embodiment, the gas sensor 5 includes a TVOC gas sensor, an SO2Gas sensor, O3Gas sensor, NO2Gas sensor, CO gas sensor, TVOC gas sensor, SO2Gas sensor, O3Gas sensor, NO2The positions of the gas sensor and the CO gas sensor can be set at random. Specifically, the TVOC gas sensor is used for measuring the concentration of TVOC (total volatile organic compounds, which refer to organic compounds with saturated vapor pressure exceeding 133.32pa at room temperature, and the boiling point of which is 50 ℃ to 250 ℃, and can exist in the air in an evaporating manner at room temperature) in the monitored gas; SO (SO)2Gas sensor for measuring SO in monitored gas2The concentration of (c); o is3Gas sensor for measuring O in monitored gas3The concentration of (c); NO2Gas sensor for determining NO in monitored gas2The concentration of (c); the CO gas sensor is used for measuring the concentration of the CO gas sensor in the monitored gas; for determining the concentration of CO in the gas being monitored.
This embodiment is through being no less than 2 gas sensor 5 in proper order and solitary through fixed subassembly 7 installation on ventilating cover 1, can in time discover each gas sensor 5's trouble, carries out quick accurate dismantlement, has promoted efficiency greatly, simultaneously, avoids causing the influence to other gas sensor 5.
Example 2:
in this embodiment, the embodiment 1 is improved on the basis of the embodiment 1, as shown in fig. 1 to 3, the gas detection hood includes a ventilation hood 1, an air inlet connector 2 is disposed at one end of the ventilation hood 1, at least 2 grooves 100 are formed in the upper surface of the ventilation hood 1 along the direction from the air inlet connector 2 to the air outlet connector 3, and the air inlet connector 2 and the grooves 100, the adjacent grooves 100, and the grooves 100 and the air outlet connector 3 are all communicated through an air passage pipeline 200 located in the ventilation hood 1 to form a detection air passage of the monitored gas.
In this embodiment, as an improvement to the groove 100 and the gas sensor 5, as shown in fig. 3, the groove 100 of the gas sensor structure is a cylindrical groove, the gas sensor 5 is a cylindrical gas sensor, and the detection cavity formed between the lower surface of the cylindrical gas sensor and the bottom of the cylindrical groove is a cylindrical detection cavity, and the accuracy of detecting the concentration of the contaminant gas can be ensured by the arrangement of the cylindrical detection cavity.
Preferably, as shown in fig. 3, the cylindrical grooves include a first cylindrical groove 101, a set of symmetrical holes 300 is formed in an inner wall of the first cylindrical groove 101, the holes 300 are communicated with the gas path pipeline 200, and centers of the gas path pipeline 200, the holes 300 and the first cylindrical groove 101 are all on the same horizontal line. The lower part of cylindrical gas sensor is boss structure, and the boss of cylindrical gas sensor lower part inserts first cylindrical recess 101, encloses into cylindrical detection chamber between the diapire of first cylindrical recess 101, the boss lower surface of gas sensor 5, the periphery wall of first cylindrical recess 101. Due to the arrangement of the structure, on one hand, the path of the detection gas path can be shortened, and the detection efficiency is improved; on the other hand, the detected gas entering the first cylindrical groove 101 can be uniformly distributed in the detection cavity, and the detection precision of the concentration of the pollutant gas can be further improved.
As an improvement to the above cylindrical groove, as shown in fig. 3, a second cylindrical groove 102 is formed on the outer circumference of the first cylindrical groove 101, coaxially with the first cylindrical groove 101, and a sealing gasket 6 is fitted on the outer circumference of the boss of the cylindrical gas sensor. When the cylindrical gas sensor is mounted in the first cylindrical recess 101, the sealing gasket 6 is in close contact with the outer wall and the bottom wall of the second cylindrical recess 102. When the gas sensor 5 is arranged in the groove 100 of the ventilation cover 2, the sealing gasket 6 seals the contact part of the gas sensor, so that the sealing performance is improved, the influence on the sealing performance of the mounting position of the gas sensor 5 and the groove 100 caused by gas leakage in the detection cavity or the movement process of the monitoring system is avoided, and the detection result is influenced. In the present embodiment, the sealing washer 6 is selected to be an O-ring.
In a preferred embodiment of this embodiment, as shown in fig. 3, a block 103 is disposed in the first cylindrical groove 101, the bottom and front and rear ends of the block 103 are connected to the first cylindrical groove 101, and a distance is provided between the left and right ends of the block 103 and the hole 300. When the gas sensor is installed in the groove 100, the upper surface of the blocking block 103 is in close contact with the lower surface of the gas sensor 5, and the gas sensor 5, the first cylindrical groove 101 and the blocking block 103 enable the detection cavity to form an inverted U-shaped detection cavity. The arrangement of the inverted U-shaped detection cavity can ensure that the detected gas stably enters the gas sensor 5 and is fully detected, and the accuracy of the detection result of the detected gas is ensured.
In this embodiment, when the gas sensor 5 is tightly pressed and mounted on the ventilation hood 1 through the fixing assembly 7, the sealing gasket 6 between the gas sensor 5 and the ventilation hood 1 is elastically deformed to a certain extent, so that the gas sensor 5 and the ventilation hood 1 can be tightly contacted to achieve a sealing effect.
As an improvement to the fixing assembly 7, as shown in fig. 1, the fixing assembly 7 at least includes 2 sensor pillars 9, the sensor pillars 9 of each group of pillar assemblies are distributed around the gas sensor 5 with the gas sensor 5 as a center, and a blind hole (not shown in the drawings) with an internal thread is processed at the top of the sensor pillar 9. The fixing component 7 further comprises a gland 8 positioned at the upper end of the gas sensor 5, a through hole (not shown in the attached drawing) corresponding to the blind hole is formed in the gland 8, and a screw 10 penetrates through the through hole and is screwed into the blind hole to fixedly connect the gas sensor 5 with the ventilation cover 1.
In the present embodiment, as shown in fig. 1 and 3, TVOC gas transmissionSensors and SO2Gas sensor, O3Gas sensor, NO2Gas sensors, CO gas sensors. Each group of strut assemblies has 2 sensor struts 9. The dashed connection lines of the sensor struts 9 of the respective gas sensors 5 on the same side of the ventilation hood 1 are parallel to the air passage conduit 200.
The process of mounting and fixing the gas sensor 5 to the ventilation hood 1 by the fixing assembly 7 is as follows: firstly, placing the gas sensor 5 on a groove of the ventilation cover 1, secondly, placing a gland 8 on the upper end of the gas sensor 5, and enabling a through hole on the gland 8 to correspond to the sensor support 9; finally, the gas sensor 5 is mounted on the ventilation hood 1 by pressing the screw 10 through the through hole and screwing it into the blind hole in the sensor post 9.
In this embodiment, the gland 8 is made of teflon, which has no irritating odor and will not affect the detection result of the gas to be monitored. Meanwhile, the polytetrafluoroethylene has the characteristics of good chemical stability, corrosion resistance, sealing property, electrical insulation property and the like, and the service life of the through pressure cover 8 can be prolonged.
In this embodiment, 9 copper posts of sensor pillar, copper post have that the heat conductivity is strong, intensity is good advantage, can carry out fine making to gas sensor, and make the heat rapid dissipation on the gas detection gas cover. Specifically, the copper column is an M3X19+ 6 copper stud.
In the present embodiment, the screw 10 is an M3X8 cross recessed pan head screw.
As an improvement to the fixing component 7, a structural gap is arranged between the top of the sensor support 9 and the lower surface of the gland 8. The setting in structure clearance, when can fixing gland 8 on sensor pillar 9, gas sensor 5 pushes down and has downward pressure to seal ring 6, makes seal ring 6 take place elastic deformation, makes the in close contact between gas sensor 5 and the cover 1 of ventilating reach sealed effect.
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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A gas detection gas hood, characterized in that: the gas detection device comprises a ventilation cover, wherein one end of the ventilation cover is provided with a gas inlet joint, the other end of the ventilation cover is provided with a gas outlet joint, at least 2 grooves are processed on the upper surface of the ventilation cover along the direction from the gas inlet joint to the gas outlet joint, and the gas inlet joint and the grooves, the adjacent grooves and the gas outlet joint are communicated through a gas path pipeline positioned in the ventilation cover to form a detection gas path of gas to be detected;
install gas sensor on the recess, gas sensor installs alone through fixed subassembly respectively on ventilating the cover, just the recess with detect the chamber between the gas sensor lower surface, gas sensor is used for detecting the pollutant gas concentration in the monitoring gas on the detection gas way.
2. The gas detection enclosure of claim 1, wherein: the recess is cylindrical recess, gas sensor is cylindrical gas sensor, just cylindrical gas sensor's lower surface with form between the bottom of cylindrical recess the detection chamber is cylindrical detection chamber.
3. The gas detection enclosure of claim 2, wherein: the cylindrical grooves comprise a first cylindrical groove, a group of symmetrical holes are formed in the inner wall of the first cylindrical groove, the holes are communicated with the gas path pipeline, and the centers of the gas path pipeline, the holes and the first cylindrical groove are all on the same horizontal line;
the lower part of the cylindrical gas sensor is of a boss structure, a boss at the lower part of the cylindrical gas sensor is inserted into the first cylindrical groove, and the bottom wall of the first cylindrical groove, the lower surface of the boss of the gas sensor and the peripheral wall of the first cylindrical groove are enclosed to form the cylindrical detection cavity.
4. The gas detection enclosure of claim 3, wherein: a second cylindrical groove which is coaxial with the first cylindrical groove is processed on the periphery of the first cylindrical groove, and a sealing gasket is sleeved on the periphery of the boss of the cylindrical gas sensor;
when the cylindrical gas sensor is installed in the first cylindrical groove, the sealing gasket is in close contact with the outer wall and the bottom wall of the second cylindrical groove.
5. The gas detection enclosure of claim 3, wherein: a blocking block is arranged in the first cylindrical groove, the bottom and the front and rear ends of the blocking block are connected with the first cylindrical groove, and a space is reserved between the left end and the right end of the blocking block and the hole;
when the gas sensor is installed in the groove, the upper surface of the blocking block is in close contact with the lower surface of the gas sensor, and the gas sensor, the first cylindrical groove and the blocking block enable the detection cavity to form an inverted U-shaped detection cavity.
6. The gas detection enclosure of any of claims 1-5, wherein: the fixed assembly includes at least 2 sensor posts.
7. The gas detection enclosure of claim 6, wherein: the fixing assembly further comprises a gland positioned at the upper end of the gas sensor, and the gas sensor is fixedly connected with the ventilation cover through the gland and the support column assembly.
8. The gas detection enclosure of claim 7, wherein: the top of the sensor support column and the lower surface of the gland are provided with a structural gap.
9. The gas detection enclosure of claim 1, wherein: the gas sensor comprises a TVOC gas sensor and an SO2Gas sensor, O3Gas sensor, NO2Gas sensors, CO gas sensors.
10. The gas detection enclosure of claim 1, wherein: the air inlet joint and the air outlet joint of the ventilation cover are both pagoda joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021920892.4U CN213875570U (en) | 2020-09-04 | 2020-09-04 | Gas detection gas hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021920892.4U CN213875570U (en) | 2020-09-04 | 2020-09-04 | Gas detection gas hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213875570U true CN213875570U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021920892.4U Active CN213875570U (en) | 2020-09-04 | 2020-09-04 | Gas detection gas hood |
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| Country | Link |
|---|---|
| CN (1) | CN213875570U (en) |
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2020
- 2020-09-04 CN CN202021920892.4U patent/CN213875570U/en active Active
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Address after: 100160 606, 6th floor, building 1, courtyard 8, Automobile Museum West Road, Fengtai District, Beijing Patentee after: Beijing Yingshi Ruida Technology Co.,Ltd. Address before: 100160 606, 6th floor, building 1, courtyard 8, Automobile Museum West Road, Fengtai District, Beijing Patentee before: BEIJING INSIGHTS VALUE TECHNOLOGY Co.,Ltd. |