CN207832769U - A kind of ventilation type measurement gas chamber - Google Patents
A kind of ventilation type measurement gas chamber Download PDFInfo
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- CN207832769U CN207832769U CN201820137574.7U CN201820137574U CN207832769U CN 207832769 U CN207832769 U CN 207832769U CN 201820137574 U CN201820137574 U CN 201820137574U CN 207832769 U CN207832769 U CN 207832769U
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Abstract
The utility model provides a kind of ventilation type measurement gas chamber, includes the measurement chamber of tubular construction；Be provided with piston measuring intracavitary, piston with measure that chamber is closed to be slidably matched, measurement chamber is divided into two parts in an axial direction；The stroke of the piston extends to the end for measuring chamber；It is both provided with corresponding air vent at the both ends for measuring chamber, at least one mounting structure is provided on the side wall for measuring chamber, mounting structure is used to detect the concentration for measuring intracavity gas for installing gas-detecting device, gas-detecting device.Technical solution provided by the utility model, when needing substitution gas, from one of air vent calibrating gas is passed through to cavity, calibrating gas generates pressure, piston is pushed to be moved to the other side for measuring chamber, it measures the original gas of intracavitary to be discharged from another air vent, to ensure to measure the precision of gas chamber internal standard concentration gases, solves the problems, such as to cause gas concentration sensor error big due to calibration.
Description
Technical field
The utility model belongs to gas detection technology field, and in particular to a kind of ventilation type measurement gas chamber.
Background technology
The research and development, calibration of gas concentration sensor, test process in factory or laboratory at present, it is desirable to provide one has
The environment of normal concentration gas, to verify the accuracy of detection of concentration sensors；To simulate the environment with normal concentration gas,
Normal concentration gas is obtained, there are mainly two types of currently used methods：
First way：Volume of a container is obtained, and the pure gas for being passed through into the container certain volume is matched, with
Obtain the calibrating gas of required concentration；The shortcomings that this mode, is the calibrating gas matched, precision be easy by
The influence of the environmental conditions such as temperature, pressure, precision are relatively low；
The second way：Normal concentration gas is passed through into the container of a fixed volume, and dense using gas to be measured
Spend the gas concentration in sensor detection container；Although the precision of this mode calibrating gas will not be by the shadow of environmental condition
It rings, but needs to take a long time when replacing the calibrating gas in container, and the standard gas concentration after displacement holds
It is vulnerable to the influence of the preceding normal concentration of displacement.
It can be seen that obtained environment in the prior art, the precision of normal concentration gas is all relatively low, if to gas
Concentration sensors are calibrated, the problem of becoming larger it will cause gas concentration sensor error.
Utility model content
The utility model provides a kind of ventilation type measurement gas chamber, for solving the precision due to environment Plays concentration gases
It is low and caused by gas concentration sensor error the problem of becoming larger after calibration.
To achieve the above object, technical solution provided by the utility model is：
Scheme 1：A kind of ventilation type measurement gas chamber, includes the measurement chamber of tubular construction；It is provided with piston measuring intracavitary, it is living
Plug with measure that chamber is closed is slidably matched, measurement chamber is divided into two parts in an axial direction；The stroke of the piston extends to measurement
The end of chamber；It is both provided with corresponding air vent at the both ends for measuring chamber, at least one peace is provided on the side wall for measuring chamber
Assembling structure, mounting structure are used to detect the concentration for measuring intracavity gas for installing gas-detecting device, gas-detecting device.
Technical solution provided by the utility model is provided with piston measuring intracavitary, and piston is divided into two by chamber is measured
A part；When needing substitution gas, it is passed through calibrating gas from one of air vent to cavity, calibrating gas generates pressure,
It pushes piston to be moved to the other side for measuring chamber, measures the original gas of intracavitary and be discharged from another air vent, to ensure to survey
The precision for measuring gas chamber internal standard concentration gases, solves the problems, such as to cause gas concentration sensor error big due to calibration.
Scheme 2：On the basis of scheme 1, the measurement chamber is cylindrical shape.
Cylindrical cavity facilitates the sliding of piston.
Scheme 3：On the basis of scheme 1, each mounting structure is respectively arranged with corresponding gas sensor, each gas sensing
Device is connected separately with corresponding display device.
Display device is set, the data detected by each gas sensor can be directly displayed out.
Scheme 4：On the basis of scheme 1, the part that the piston is used to contact cavity wall is provided with sealing ring.
Sealing ring is set, can prevent the gas of piston both sides from mutually flowing and influencing precision.
Scheme 5：On the basis of scheme 1-4 any one, the air vent is connected with corresponding scavenging air valve.
Scheme 6：On the basis of scheme 5, the scavenging air valve is triple valve.
Scheme 7：On the basis of scheme 1-4 any one, the air vent for measuring the setting of chamber both ends includes corresponding
Air admission hole and venthole.
Scheme 8：On the basis of scheme 7, each air admission hole is provided with corresponding intake valve, and each venthole is provided with accordingly
Air outlet valve.
Description of the drawings
Fig. 1 is the structure chart that ventilation type measures gas chamber in embodiment；
Fig. 2 is the schematic diagram for being passed through under test gas in embodiment from the first air vent；
Fig. 3 is the schematic diagram for completing to be passed through under test gas from the first air vent in embodiment；
Fig. 4 is the schematic diagram for being passed through calibrating gas in embodiment from the second air vent；
Fig. 5 is the schematic diagram for completing to be passed through under test gas from the second air vent in embodiment；
In figure：1 is measures chamber, and 2 be piston, and 3 be sealing ring, and 4 be gas sensor, and 5 be the first triple valve, and 51 be first
The air admission hole of triple valve, 52 be the first triple valve venthole, 6 be the second triple valve, 61 be the second triple valve air admission hole, 62
For the venthole of the second triple valve.
Specific implementation mode
The utility model provides a kind of ventilation type measurement gas chamber, for solving the precision due to environment Plays concentration gases
It is low and caused by gas concentration sensor error the problem of becoming larger after calibration.
To achieve the above object, technical solution provided by the utility model is：
A kind of ventilation type measurement gas chamber, includes the measurement chamber of tubular construction；It is provided with piston, piston and survey measuring intracavitary
Chamber is closed is slidably matched for amount, will measure chamber and is divided into two parts in an axial direction；The stroke of the piston extends to the end for measuring chamber
Portion；It is both provided with corresponding air vent at the both ends for measuring chamber, at least one mounting structure is provided on the side wall for measuring chamber,
Mounting structure is for installing gas-detecting device.
The technical solution of the utility model is described further With reference to embodiment.
The present embodiment provides a kind of ventilation type measurement gas chambers to be calibrated to gas sensor for being passed through calibrating gas,
Or the concentration of the be passed through gas of detection.
The ventilation type that the present embodiment is provided measures gas chamber, and for structure as shown in Figure 1, wherein 1 is measurement chamber, 2 be piston,
3 be sealing ring, and 4 be gas sensor, and 5 be the first triple valve, and 51 be the air admission hole of the first triple valve, and 52 be the first triple valve
Venthole, 6 be the second triple valve, and 61 be the air admission hole of the second triple valve, and 62 be the venthole of the second triple valve.It is circle to measure chamber
Tubular, both ends sealing, inner wall smooth are smooth；In the piston that is internally provided with for measuring chamber, piston and measurement intracavitary are close in an axial direction
Close and be slidably matched, piston thereto one end slide when, the end at the end can be slided into.Piston is divided into two portions by chamber is measured
Point, by taking Fig. 1 as an example, the left side is the first gas chamber, and the right is the second gas chamber, and piston setting is arranged with the part that chamber contacts is measured
There is sealing ring, ensures that the gas concentration of the first gas chamber and the second gas chamber will not influence each other.
There are four mounting structure, each mounting structure is used to be arranged gas sensor, and every for setting in the cavity wall for measuring chamber
There are one for connecting the display device answered with corresponding gas sensor for setting at a mounting structure.It is arranged on each mounting structure
Gas sensor is used to the concentration that detection measures intracavity gas, and the gas concentration that display device detects respective sensor is believed
Breath is shown, is checked for staff.
It is respectively arranged with the first air vent and the second air vent at the both ends for measuring chamber, the first air vent is connected with the one or three
Port valve, the second air vent are connected with the second triple valve.
The ventilation type that the present embodiment is provided measures gas chamber, can either be detected to gas, also can be to gas sensing
Device is calibrated.
When being detected to gas, gas sensor is set at each mounting structure for measuring chamber, from the first air vent
It is passed through under test gas to cavity, and the second triple valve is set as being vented, under test gas enters from the first air vent at this time, pushes
Piston will measure the original gas of intracavitary and will be discharged from the second air vent, and process is as shown in Figures 2 and 3, is arranged in mounting structure
Concentration detected by gas sensor is the concentration of under test gas.
When being calibrated to gas sensor, gas sensor to be calibrated is arranged at mounting structure, from first
Air vent is passed through calibrating gas known to concentration to intracavitary is measured, and the second triple valve is set as being vented, at this time calibrating gas
Enter from the first air vent, pushes piston that will measure the original gas of intracavitary and be discharged from the second air vent, process such as Fig. 2 and Fig. 3
Shown, the concentration for the measurement intracavitary calibrating gas that the gas sensor to be calibrated being arranged at mounting structure detects simultaneously is shown in
In corresponding display device, staff compares the actual concentrations of itself and calibrating gas, you can obtains under test gas sensing
The error of device, to realize the calibration to gas sensor.
As other embodiment, when being detected to gas or being calibrated to gas sensor, can also incite somebody to action
Gas is passed through by the second air vent, original gas in cavity is discharged from the first air vent, as shown in Figure 4 and Figure 5.
In the present embodiment, it is respectively set there are one air vent measuring chamber both ends, connection one is corresponding on each air vent
Scavenging air valve；As other embodiment, two air vents can be respectively set at each end for measuring chamber, by one of ventilation
Hole is separately connected a corresponding valve as air admission hole, another air vent as venthole, each air admission hole and venthole.
Claims (8)
1. a kind of ventilation type measures gas chamber, include the measurement chamber of tubular construction；It is characterized in that, being provided with work measuring intracavitary
Plug, piston with measure that chamber is closed is slidably matched, measurement chamber is divided into two parts in an axial direction；The stroke of the piston extends to
Measure the end of chamber；It is both provided with corresponding air vent at the both ends for measuring chamber, at least one is provided on the side wall for measuring chamber
A mounting structure, for mounting structure for installing gas-detecting device, gas-detecting device, which is used to detect, measures the dense of intracavity gas
Degree.
2. a kind of ventilation type according to claim 1 measures gas chamber, which is characterized in that the measurement chamber is cylindrical shape.
3. a kind of ventilation type according to claim 1 measures gas chamber, which is characterized in that each mounting structure is respectively arranged with phase
The gas sensor answered, each gas sensor are connected separately with corresponding display device.
4. a kind of ventilation type according to claim 1 measures gas chamber, which is characterized in that the piston is for contacting cavity wall
Part be provided with sealing ring.
5. a kind of ventilation type measures gas chamber according to any one of claims 1-4, which is characterized in that the air vent connects
It is connected to corresponding scavenging air valve.
6. a kind of ventilation type according to claim 5 measures gas chamber, which is characterized in that the scavenging air valve is triple valve.
7. a kind of ventilation type measures gas chamber according to any one of claims 1-4, which is characterized in that the measurement chamber two
It includes corresponding air admission hole and venthole to hold the air vent of setting.
8. a kind of ventilation type according to claim 7 measures gas chamber, which is characterized in that each air admission hole be provided with accordingly into
Air valve, each venthole are provided with corresponding air outlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820137574.7U CN207832769U (en) | 2018-01-26 | 2018-01-26 | A kind of ventilation type measurement gas chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820137574.7U CN207832769U (en) | 2018-01-26 | 2018-01-26 | A kind of ventilation type measurement gas chamber |
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| Publication Number | Publication Date |
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| CN207832769U true CN207832769U (en) | 2018-09-07 |
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ID=63395115
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820137574.7U Active CN207832769U (en) | 2018-01-26 | 2018-01-26 | A kind of ventilation type measurement gas chamber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031155A (en) * | 2019-04-01 | 2019-07-19 | 浙江工商大学 | A kind of laboratory air leak detecting device and method |
| CN113348914A (en) * | 2021-06-20 | 2021-09-07 | 潍坊新普食品科技有限公司 | Green house carbon dioxide detection device |
| CN114486826A (en) * | 2021-12-29 | 2022-05-13 | 聚光科技(杭州)股份有限公司 | Multi-gas detection device and method |
-
2018
- 2018-01-26 CN CN201820137574.7U patent/CN207832769U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031155A (en) * | 2019-04-01 | 2019-07-19 | 浙江工商大学 | A kind of laboratory air leak detecting device and method |
| CN113348914A (en) * | 2021-06-20 | 2021-09-07 | 潍坊新普食品科技有限公司 | Green house carbon dioxide detection device |
| CN114486826A (en) * | 2021-12-29 | 2022-05-13 | 聚光科技(杭州)股份有限公司 | Multi-gas detection device and method |
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