CN214097353U - Multi-channel gas detection mechanism capable of highly reducing field state - Google Patents
Multi-channel gas detection mechanism capable of highly reducing field state Download PDFInfo
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- CN214097353U CN214097353U CN202023135270.3U CN202023135270U CN214097353U CN 214097353 U CN214097353 U CN 214097353U CN 202023135270 U CN202023135270 U CN 202023135270U CN 214097353 U CN214097353 U CN 214097353U
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Abstract
The utility model provides a gaseous detection mechanism of multichannel of high reduction on-the-spot state, including a plurality of sampling points, a plurality of sampling points are connected with air intake solenoid valve group and exhaust solenoid valve group, air intake solenoid valve group includes first air intake solenoid valve to N air intake solenoid valve, exhaust solenoid valve group includes first exhaust solenoid valve and N exhaust solenoid valve, K air intake solenoid valve and K exhaust solenoid valve connect same sampling point, air intake solenoid valve group is connected with the aspiration pump, the aspiration pump is connected with the sensor air chamber, be equipped with vacuum sensor and gas measurement sensor group in the sensor air chamber, the sensor air chamber is connected with the two-way solenoid valve, the two-way solenoid valve is connected with the air exhaust vacuum pump, the air exhaust vacuum pump is connected with the scavenge chamber, the aspiration pump is connected to the scavenge chamber. The utility model discloses it is the closed loop to detect the flow, avoids gaseous outer the leaking to cause the pollution, improves and detects the precision.
Description
Technical Field
The utility model belongs to the technical field of the ambient gas detects, concretely relates to gaseous detection mechanism of multichannel of high reduction on-the-spot state.
Background
At present, in some environmental gas detection occasions, the gas content of different parts needs to be detected, such as SF in a transformer substation6、O2And (5) detecting the content. In the detection process, in order to save cost, a method of sharing a sensor is often adopted for detection, and the specific idea is to adopt an air pump to alternately pump air of each sampling point to be detected into an air chamber where the sensor is located and acquire data of each acquisition point by a method of reading the sensor in a time-sharing manner. However, because the gas flow needs to form a loop, the exhaust end of the sensor air chamber cannot be closed and is often directly connected with air, and due to the diffusion characteristic of the gas, the sensor actually detects mixed gas mixed with a certain amount of nearby air, so that the detection is not credible from the source. In addition, since such sensor collection units are typically placed in an operating room, if toxic and harmful gases are collected, the environment in the operating room may be polluted, and although the content may be small, potential hazards still exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gaseous detection mechanism of multichannel of high reduction on-the-spot state detects the flow and is the closed loop, avoids gaseous outer the leaking to cause the pollution, improves and detects the precision.
The utility model provides a following technical scheme:
the utility model provides a gaseous detection mechanism of multichannel of high reduction on-the-spot state, includes a plurality of sampling points, and is a plurality of the sampling point is connected with air intake solenoid valve group and exhaust solenoid valve group, air intake solenoid valve group includes first air intake solenoid valve to N air intake solenoid valve, exhaust solenoid valve group includes first exhaust solenoid valve and N exhaust solenoid valve, and K air intake solenoid valve and K exhaust solenoid valve connect same sampling point, air intake solenoid valve group is connected with the aspiration pump, the aspiration pump is connected with the sensor air chamber, be equipped with vacuum sensor and gas measurement sensor group in the sensor air chamber, the sensor air chamber is connected with the two-way solenoid valve, the two-way solenoid valve is connected with the air exhaust vacuum pump, air exhaust vacuum pump connection has the scavenge chamber, the aspiration pump is connected to the scavenge chamber.
Preferably, the number of the intake solenoid valves, the number of the exhaust solenoid valves and the total number of sampling points are all equal and equal to N, and K is an integer greater than or equal to 1 and less than or equal to N.
Preferably, the air pump is connected with a switching value, the switching value is connected with a controller, and the controller is connected with a communication unit, a display and a key unit.
Preferably, the air pump, the sensor air chamber, the vacuum sensor, the gas measurement sensor group, the two-way solenoid valve, the air inlet solenoid valve group, the air outlet solenoid valve group and the air exhaust vacuum pump are all electrically connected with the controller.
Preferentially, the two-way electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve, the sensor air chamber is connected with the exhaust electromagnetic valve group through the first electromagnetic valve, and the sensor air chamber is connected with the air exhaust vacuum pump through the second electromagnetic valve.
Preferably, pipelines are arranged between the air inlet electromagnetic valve group and the air pump, between the air pump and the sensor air chamber, between the air exchange chamber and the air pump, between the air pump and the two-way electromagnetic valve, between the two-way electromagnetic valve and the exhaust electromagnetic valve group, between the air inlet electromagnetic valve group and the sampling point, and between the sampling point and the exhaust electromagnetic valve group.
Preferably, the air extraction pump is provided with at least two air inlets, the air exchange chamber is connected with one air inlet, and the plurality of air inlet electromagnetic valves are connected with the other air inlets.
Preferably, the gas exchange chamber volume is greater than the sensor chamber volume.
Preferably, the gas measurement sensor group comprises an SF6 sensor, a CO2Sensor, CO sensor and O2A sensor.
The utility model has the advantages that:
1. the Kth air inlet electromagnetic valve, the Kth air outlet electromagnetic valve, the sampling point and the sensor air chamber form a closed loop, so that multiple detection gases are prevented from being mixed, the detection precision is further influenced, and meanwhile, the toxic and harmful gases are prevented from being discharged to other collecting points;
2. before detection, air in the sensor air chamber is pumped into the scavenging chamber through an air-pumping vacuum pump, and the vacuum degree in the sensor air chamber is detected through a vacuum sensor, so that the gas to be detected at a collection point can be conveniently circulated into the sensor air chamber for detection; after the detection is finished, after the air inlet electromagnetic valve connected with the sampling point is closed, air in the ventilation chamber is extracted through the air extracting pump, detection gas in the pipeline, the air extracting pump and the sensor gas chamber is discharged into the sampling point through the exhaust electromagnetic valve, redundant gas is emptied, and the detection of environment gas at other sampling points is facilitated.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic connection diagram of the present invention.
Labeled as: 1. sampling point, 2, an air inlet electromagnetic valve group, 3, an exhaust electromagnetic valve group, 4, an air suction pump, 41, a switching value, 42, a controller, 43, a communication unit, 44, a display, 45, a key unit, 5, a sensor air chamber, 51, a gas measurement sensor group, 6, a vacuum sensor, 7, a two-way electromagnetic valve, 71, a first electromagnetic valve, 72, a second electromagnetic valve, 8, an air suction vacuum pump and 9, a ventilation chamber.
Detailed Description
As shown in fig. 1, a multi-channel gas detection mechanism with high field state restoration comprises a plurality of sampling points 1, wherein the plurality of sampling points 1 are connected with a gas inlet electromagnetic valve group 2 and a gas outlet electromagnetic valve group 3, the gas inlet electromagnetic valve group 2 comprises a first gas inlet electromagnetic valve and an nth gas inlet electromagnetic valve, the gas outlet electromagnetic valve group 3 comprises a first gas outlet electromagnetic valve and an nth gas outlet electromagnetic valve, the kth gas inlet electromagnetic valve and the kth gas outlet electromagnetic valve are connected with the same sampling point 1, the number of the gas inlet electromagnetic valves, the number of the gas outlet electromagnetic valves and the total number of the sampling points 1 are equal and equal to N, and K is an integer greater than or equal to 1 and less than or equal to N;
as shown in fig. 1, the air inlet solenoid valve set 2 is connected with an air pump 4, the air pump 4 is provided with at least two air inlets, the air pump 4 is connected with a sensor air chamber 5, and a vacuum sensor 6 and a gas measurement sensor are arranged in the sensor air chamber 5The sensor group 51, the gas measurement sensor group 51 comprises SF6 sensor, CO2Sensor, CO sensor and O2The sensor, the sensor air chamber 5 is connected with the two-way electromagnetic valve 7, the two-way electromagnetic valve 7 comprises a first electromagnetic valve 71 and a second electromagnetic valve 72, the sensor air chamber 5 is connected with the exhaust electromagnetic valve group 3 through the first electromagnetic valve 71, the sensor air chamber 5 is connected with the air suction vacuum pump 8 through the second electromagnetic valve 72, the two-way electromagnetic valve 7 is connected with the air suction vacuum pump 8, the air suction vacuum pump 8 is connected with the scavenging chamber 9, the volume of the scavenging chamber 9 is larger than that of the sensor air chamber 5, the scavenging chamber 9 is connected with an air inlet, the air inlet electromagnetic valves are connected with other air inlets, the air inlet electromagnetic valve group 2 is connected with the air suction pump 4, the air suction pump 4 is connected with the sensor air chamber 5, the scavenging chamber 9 is connected with the air suction pump 4, the scavenging chamber 9 is connected with the air suction vacuum pump 8, the air suction vacuum pump 8 is connected with the two-way electromagnetic valve 7, the two-way electromagnetic valve group 7 is connected with the exhaust electromagnetic valve group 3, the air inlet electromagnetic valve group 2 is connected with the sampling point 1, And pipelines are arranged between the sampling point 1 and the exhaust electromagnetic valve group 3.
As shown in fig. 1, the air pump 4 is connected with a switching value 41, the switching value 41 is connected with a controller 42, the controller 42 is connected with a communication unit 43, a display 44 and a key unit 45, the key unit 45 selects and controls the opening or closing of the air inlet electromagnetic valve and the air outlet electromagnetic valve through the controller 42, and the air pump 4, the sensor air chamber 5, the vacuum sensor 6, the gas measurement sensor group 51, the two-way electromagnetic valve 7, the air inlet electromagnetic valve group 2, the air outlet electromagnetic valve group 3 and the air suction vacuum pump 8 are all electrically connected with the controller 42.
As shown in fig. 1, the detection process of the present invention is: before detection, air in the sensor air chamber 5 is pumped into the scavenging chamber 9 through the air pumping vacuum pump 8, the vacuum degree in the sensor air chamber 5 is detected through the vacuum sensor 6, and the second electromagnetic valve 72 is closed after the sensor air chamber 5 is in a vacuum state; then, a first air inlet electromagnetic valve and a first exhaust electromagnetic valve are selected and opened through the key unit 45, the air pump 4 is opened for delaying a period of time, after the gas in the first sampling point 1 is fully exchanged with the sensor air chamber 5, the gas measurement sensor group 51 collects data in the sensor air chamber 5, the first air inlet electromagnetic valve is closed after the data reading is finished, the air pump 4 extracts and guides the air in the scavenging chamber 9 into the pipeline, the air exhausts the detection gas in the pipeline, the air pump 4 and the sensor air chamber 5 to the first sampling point 1 through the first exhaust electromagnetic valve, and after the gas in the sensor air chamber 5 is exhausted, the first exhaust electromagnetic valve is closed; and when the gas of other sampling points 1 needs to be collected, repeating the steps for detection.
The utility model has the advantages that: the structure is compact, the detection flow is closed loop, the pollution caused by gas leakage is avoided, and the detection precision is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a gaseous detection mechanism of multichannel of high reduction on-site state, includes a plurality of sampling points, its characterized in that: it is a plurality of the sampling point is connected with air intake solenoid valve group and exhaust solenoid valve group, air intake solenoid valve group includes first air intake solenoid valve to N air intake solenoid valve, exhaust solenoid valve group includes first exhaust solenoid valve and N exhaust solenoid valve, and same sampling point is connected to K air intake solenoid valve and K exhaust solenoid valve, air intake solenoid valve group is connected with the aspiration pump, the aspiration pump is connected with the sensor air chamber, be equipped with vacuum sensor and gas measurement sensor group in the sensor air chamber, the sensor air chamber is connected with the two-way solenoid valve, the two-way solenoid valve is connected with the air exhaust vacuum pump, the air exhaust vacuum pump is connected with the scavenge chamber, the scavenge pump is connected to the scavenge chamber.
2. The highly field-state-restoring multi-channel gas sensing mechanism of claim 1, wherein: the number of the air inlet electromagnetic valves, the number of the air outlet electromagnetic valves and the total number of the sampling points are equal and equal to N, and K is an integer which is greater than or equal to 1 and less than or equal to N.
3. The highly field-state-restoring multi-channel gas sensing mechanism of claim 1, wherein: the air pump is connected with a switching value, the switching value is connected with a controller, and the controller is connected with a communication unit, a display and a key unit.
4. The highly field-state-restoring multi-channel gas sensing mechanism of claim 3, wherein: the air pump, the sensor air chamber, the vacuum sensor, the gas measurement sensor group, the two-way electromagnetic valve, the air inlet electromagnetic valve group, the air exhaust electromagnetic valve group and the air exhaust vacuum pump are all electrically connected with the controller.
5. The highly field-state-restoring multi-channel gas sensing mechanism of claim 1, wherein: the two-way electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve, the sensor air chamber is connected with the exhaust electromagnetic valve group through the first electromagnetic valve, and the sensor air chamber is connected with the air exhaust vacuum pump through the second electromagnetic valve.
6. The highly field-state-restoring multi-channel gas sensing mechanism of claim 1, wherein: pipelines are arranged between the air inlet electromagnetic valve group and the air pump, between the air pump and the sensor air chamber, between the air exchange chamber and the air pump, between the air pump and the two-way electromagnetic valve, between the two-way electromagnetic valve and the exhaust electromagnetic valve group, between the air inlet electromagnetic valve group and the sampling point, and between the sampling point and the exhaust electromagnetic valve group.
7. The highly field-state-restoring multi-channel gas sensing mechanism of claim 1, wherein: the air pump is provided with at least two air inlets, the air exchange chamber is connected with one air inlet, the air inlet electromagnetic valves are connected with the rest air inlets, and the volume of the air exchange chamber is larger than that of the air chamber of the sensor.
8. The highly field-state-restoring multi-channel gas sensing mechanism of claim 1, wherein: the volume of the scavenging chamber is larger than that of the sensor air chamber.
9. The highly field-state-restoring multi-channel gas sensing mechanism of claim 1, wherein: the gas measurement sensor group comprises an SF6 sensor and CO2Sensor, CO sensor and O2A sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202023135270.3U CN214097353U (en) | 2020-12-23 | 2020-12-23 | Multi-channel gas detection mechanism capable of highly reducing field state |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023135270.3U CN214097353U (en) | 2020-12-23 | 2020-12-23 | Multi-channel gas detection mechanism capable of highly reducing field state |
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| CN214097353U true CN214097353U (en) | 2021-08-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115144230A (en) * | 2022-06-20 | 2022-10-04 | 北京杜克泰克科技有限公司 | Multi-inlet multi-outlet gas closed-loop multi-point sampling control device and control method |
| CN116973542A (en) * | 2023-09-21 | 2023-10-31 | 山东道成泰和智能科技有限公司 | High-precision five-in-one gas detector with closable probe area |
-
2020
- 2020-12-23 CN CN202023135270.3U patent/CN214097353U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115144230A (en) * | 2022-06-20 | 2022-10-04 | 北京杜克泰克科技有限公司 | Multi-inlet multi-outlet gas closed-loop multi-point sampling control device and control method |
| CN116973542A (en) * | 2023-09-21 | 2023-10-31 | 山东道成泰和智能科技有限公司 | High-precision five-in-one gas detector with closable probe area |
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