CN201247168Y

CN201247168Y - Multichannel gas sampling apparatus

Info

Publication number: CN201247168Y
Application number: CNU2008201851627U
Authority: CN
Inventors: 王茂祥
Original assignee: CHANGZHOU AITE TECHNOLOGY CO LTD
Current assignee: CHANGZHOU AITE TECHNOLOGY CO LTD
Priority date: 2008-08-25
Filing date: 2008-08-25
Publication date: 2009-05-27
Anticipated expiration: 2018-08-25

Abstract

The utility model discloses a gas sampler with multi-channel, which is provided with a gas chamber with multi-channel and a micro-extraction pump, wherein an air outlet of the gas chamber with multi-channel is connected with an air inlet pipeline of the micro-extraction pump, the pipeline on the position of the air inlet of the gas chamber with multi-channel is connected with a magnetic valve, the air inlet end of the magnetic valve is connected with a pipeline, the pipeline comprises a sampling pipeline and a replacing pipeline. The sampler is matched in use with an SF6 gas leakage warning system, the measurement of the SF6 gas content of the environment near a plurality of monitoring points can be completed only through an SF6 gas quantitative senor, which can monitor the SF6 gas content in environment at any time, can reduce use cost of users and can save expenses.

Description

The multi-channel gas sampler

Technical field

The utility model relates to gas leakage alarm technical field, the multi-channel gas sampler in especially a kind of gas leakage alarming system.

Background technology

SF ₆Gas has stronger insulating property, is widely used in the middle and high piezoelectricity gas equipment, and its security is subjected to people's common concern, can cause SF unavoidably in the long-term use of electrical equipment ₆Gas leaks, because SF ₆Colourless, tasteless, easily to assemble and be difficult for distributing, long-term aggregated can cause the electric equipment chamber anoxic, simultaneously SF ₆Gas can decompose generation H after long-time the use ₂S, SO ₂, extremely toxic substance such as HF, cause operating personnel's poisoning, therefore usually SF to be set in that electrical equipment is indoor ₆Gas leakage alarming system is monitored the SF of indoor each control point of electrical equipment for a long time ₆Gas content is reported to the police when content overproof automatically, so that people take the effective precautionary measures.

At present people use always is SF qualitatively ₆Gas leakage alarming system, it is the SF in environment ₆Gas content gives the alarm when reaching a certain amount of, but the SF in the display environment constantly ₆Content, and also easily produce the false alarm phenomenon, and use quantitative SF ₆Gas leakage alarming system, when the monitoring sampled point of gas for a long time, need many SF of configuration ₆Gasometry sensor, and SF ₆The gasometry sensor costs an arm and a leg, and causes user's use cost height, and Given this user who has selects SF qualitatively ₆Gas leakage alarming system, thereby the SF in the monitoring environment constantly ₆Content influences result of use.

The utility model content

The technical problems to be solved in the utility model is: a kind of multi-channel gas sampler is provided, and it cooperates SF ₆Gas leakage alarming system uses, and only needs a SF ₆The gasometry sensor just can be finished SF near the environment in a plurality of control points ₆The measurement of gas content, the SF in the monitoring environment at any time ₆Gas content reduces user's use cost.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of multi-channel gas sampler, has the hyperchannel air chamber that a passage can be expanded into a plurality of passages, the trace aspiration pump, the gas outlet of hyperchannel air chamber is connected with the air intake opening pipeline of micro-aspiration pump, the air intake opening position pipeline of hyperchannel air chamber is connected with solenoid valve, and the inlet end of solenoid valve is connected with pipeline.

Further, described pipeline comprises sampling pipe and displacement pipeline, and sampling pipe is used to extract the control point gas on-site, and the displacement pipeline is used for replacing the gas of total system.

For reflecting and regulate the SF that is detected ₆Gas flow, the gas outlet pipeline of micro-aspiration pump is provided with gas meter.

For preventing that dust, mosquito etc. are inhaled into pipeline, are provided with screen pack in the inlet end position of pipeline.

The beneficial effects of the utility model are that the utility model cooperates SF ₆Gas leakage alarming system uses, and utilizes the switch of solenoid valve to control each monitoring sampled point gas pipeline, thereby reaches with a SF ₆The gasometry sensor just can be finished the SF of a plurality of control points ₆The purpose of gasometry test, and number of tubes can dispose arbitrarily according to actual conditions, changed an original SF ₆The gasometry sensor can only be tested the situation of a monitoring sampled point, has reduced user's use cost, has saved expense.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

1. hyperchannel air chambers, 2. micro-aspiration pump 3. solenoid valves 4. pipelines 41. sampling pipes 42. displacement pipelines 5. gas meters 6. screen packs among the figure

Embodiment

A kind of multi-channel gas sampler as shown in Figure 1 has the hyperchannel air chamber 1 and the micro-aspiration pump 2 that a passage can be expanded into a plurality of passages, and micro-aspiration pump 2 will be monitored sampled point gas and be extracted into the SF that is used ₆In the gas leakage alarming system, gas content is carried out analyzing and testing, the gas outlet of hyperchannel air chamber 1 is connected with the air intake opening pipeline of micro-aspiration pump 2, the air intake opening position pipeline of hyperchannel air chamber 1 is connected with 13 solenoid valves 3, the inlet end of each solenoid valve 3 is connected with pipeline 4, wherein preceding 12 pipelines 4 are sampling pipe 41, last pipeline 4 is displacement pipeline 42, sampling pipe 41 is used to extract the control point gas on-site, displacement pipeline 42 is used for replacing the gas of total system, for reflecting and regulate the SF that is detected ₆Gas flow, the gas outlet pipeline of micro-aspiration pump 2 is provided with gas meter 5, is inhaled into pipeline 4 for preventing dust, mosquito etc., is provided with screen pack 6 in the inlet end position of pipeline 4.

When the utility model uses, the PU pipe of each parts with diameter 6mm connected, guarantee during connection each sampling pipe 41 to be evenly distributed under the high-voltage switch gear of gas-insulated switchgear system good seal, displacement pipeline 42 places outdoor, and solenoid valve 3 is controlled its switch by circuit.During measurement, start micro-aspiration pump 2 and bleed, at first open the solenoid valve 3 on first sampling pipe 41, other solenoid valve 3 all cuts out, and what so micro-aspiration pump 2 was extracted into is exactly the gas of first sampling pipe 41 residing monitoring sampled points, SF ₆Near SF in the environment first sampling pipe 41 residing monitoring sampled points just that gas leakage alarming system is measured ₆The content of gas, measurement finishes and closes solenoid valve 3 on first sampling pipe 41 immediately, open the solenoid valve 3 on the displacement pipeline 42 simultaneously, what this moment, micro-aspiration pump 2 was extracted into is the air of outdoor cleaning, can replace near the gas first residual in system sampling pipe 41 like this, close the solenoid valve 3 on the displacement pipeline 42 after displacement finishes, open second solenoid valve 3 on the sampling pipe 41 again, circulation just can be finished 12 monitoring sampled point SF successively ₆The measurement of gas content utilizes a sensor to finish 12 monitoring sampled point SF thereby reach ₆The purpose that gas content is measured.

The utility model is simple in structure, can utilize solenoid valve 3 to select pipeline 4 according to the quantity of any configuring pipes 4 of monitoring sampled point quantity, has changed an original sensor and can only measure a monitoring sampled point SF ₆The situation of gas content has reduced user's use cost, has saved expense.

Claims

1. multi-channel gas sampler, it is characterized in that: have hyperchannel air chamber (1), trace aspiration pump (2), the gas outlet of hyperchannel air chamber (1) is connected with the air intake opening pipeline of micro-aspiration pump (2), the air intake opening position pipeline of hyperchannel air chamber (1) is connected with solenoid valve (3), and the inlet end of solenoid valve (3) is connected with pipeline (4).

2. multi-channel gas sampler according to claim 1 is characterized in that: described pipeline (4) comprises sampling pipe (41) and displacement pipeline (42).

3. multi-channel gas sampler according to claim 1 is characterized in that: the gas outlet pipeline of described micro-aspiration pump (2) is provided with gas meter (5).

4. multi-channel gas sampler according to claim 1 is characterized in that: the inlet end position of described pipeline (4) is provided with screen pack (6).