CN212483447U - Explosion-proof motor sweeps explosive gas detection device that admits air - Google Patents
Explosion-proof motor sweeps explosive gas detection device that admits air Download PDFInfo
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- CN212483447U CN212483447U CN202021470228.4U CN202021470228U CN212483447U CN 212483447 U CN212483447 U CN 212483447U CN 202021470228 U CN202021470228 U CN 202021470228U CN 212483447 U CN212483447 U CN 212483447U
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Abstract
An explosive gas detection device for blowing and air intake of an explosion-proof motor relates to an explosive gas detection device. The utility model provides a current explosion proof machine sweep gaseous kind can't judge, if carelessly blow in motor cavity with explosive gas, will cause serious incident's problem. The utility model discloses a sweep the device and install in the frame, sweep the pipeline and be connected with sweeping the device and provide the sweeping gas for sweeping the pipeline, explosive gas detection device installs on sweeping the pipeline, explosive gas detection device includes the air inlet valve, the gas outlet valve, the gas lumen, the alarm, terminal box and installation pipe, installation pipe series connection is installed on sweeping the pipeline, the gas lumen install the installation pipe the lower extreme and with the gas lumen intercommunication, the gas outlet valve is installed on the gas lumen, the one end at the installation pipe is installed to the air inlet valve, the upper end at the installation pipe is installed to the alarm, the terminal box is connected with the alarm. The utility model is used for explosion-proof machine sweeps the explosive gas detection that admits air.
Description
Technical Field
The utility model relates to an explosion-proof machine sweeps explosive gas detection device that admits air.
Background
The explosion-proof motor adopting the positive pressure shell type explosion-proof technology needs to perform gas purging on the inner cavity of the motor in order to ensure effective replacement of gas in the inner cavity of the motor, and the adopted purging gas is generally fresh and dry air or nitrogen. However, the air sources of large-scale factories are various, most of the air sources are colorless and tasteless, whether the blowing air is explosive or not can not be judged by the sense of human body, and serious safety accidents can be caused if the explosive air is blown into the inner cavity of the motor carelessly.
In conclusion, the type of the blowing gas of the existing explosion-proof motor can not be judged, and if the explosive gas is blown into the inner cavity of the motor by accident, serious safety accidents can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current explosion proof machine and sweep the unable judgement of gaseous kind, if blow in motor cavity with explosive gas carelessly, will cause serious incident's problem. An explosive gas detection device for purging air intake of an explosion-proof motor is provided.
The technical scheme of the utility model is that an explosion-proof motor sweeps an explosive gas detection device that admits air, it includes frame 1, sweeps device 2 and sweeps pipeline 3, sweep device 2 installs on frame 1, sweep pipeline 3 is connected with sweep device 2 and provides the sweep gas for sweep device 2, it still includes explosive gas detection device 4, explosive gas detection device 4 installs on sweeping pipeline 3, explosive gas detection device 4 includes air inlet valve 4-1, gas outlet valve 4-2, gas lumen 4-3, alarm 4-4, detection device main part 4-5, terminal box 4-6 and installation pipe 4-7, installation pipe 4-7 is installed on sweeping pipeline 3 in series, gas lumen 4-3 installs at the lower extreme of installation pipe 4-7 and communicates with gas lumen 4-3, the gas outlet valve 4-2 is installed on the gas pipe cavity 4-3, the gas inlet valve 4-1 is installed at one end of the installation pipe 4-7, the detection device main body 4-5 is installed on the installation pipe 4-7, the alarm 4-4 is installed on the detection device main body 4-5, and the junction box 4-6 is installed on one side of the detection device main body 4-5.
Compared with the prior art, the utility model following improvement effect has:
the utility model discloses an install explosive gas detection device on sweeping the pipeline for when gas is blowing in the explosion-proof motor in, can detect the gas of blowing in earlier, whether detect and contain inflammable and explosive gas, if there is hazardous gas, then close the valve, do not let in sweeping the device in, if there is no hazardous gas, then blow in sweeping the device. The danger that the explosion-proof motor is filled with explosive gas carelessly is solved, and serious safety accidents are avoided.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention. Fig. 2 is a partially enlarged view of the explosive gas detection device. Fig. 3 is a control logic diagram of the explosive gas detection device.
Detailed Description
The specific implementation mode is as follows: the embodiment is described by combining fig. 1 and fig. 2, the explosion-proof motor blowing and air-intake explosive gas detection device comprises a base 1, a blowing device 2 and a blowing pipeline 3, the blowing device 2 is installed in the base 1, the blowing pipeline 3 is connected with the blowing device 2 and provides blowing gas for the blowing pipeline 3, the explosion-proof motor blowing and air-intake explosive gas detection device also comprises an explosive gas detection device 4, the explosive gas detection device 4 is installed on the blowing pipeline 3, the explosive gas detection device 4 comprises an air inlet valve 4-1, an air outlet valve 4-2, a gas pipe cavity 4-3, an alarm 4-4, a detection device main body 4-5, a junction box 4-6 and a mounting pipe 4-7, the mounting pipe 4-7 is installed on the blowing pipeline 3 in series, the gas pipe cavity 4-3 is installed at the lower end of the mounting pipe 4-7 and is communicated with the gas pipe cavity 4-3, the gas outlet valve 4-2 is installed on the gas pipe cavity 4-3, the gas inlet valve 4-1 is installed at one end of the installation pipe 4-7, the detection device main body 4-5 is installed on the installation pipe 4-7, the alarm 4-4 is installed on the detection device main body 4-5, and the junction box 4-6 is installed on one side of the detection device main body 4-5.
In order to solve the accident that explosion-proof motor sweeps and inadvertently lets in explosive gas, the utility model provides a gaseous type of discernment's detection device, in case detect explosive gas can send alarm signal rapidly and control the pneumatic valve switch action.
The utility model discloses an explosion-proof machine sweeps explosive gas detection device that air inlet installation belt valve was taken, and high accuracy gas sensor installs in the lumen of detection device lower part, sweeps gas and gets into the sensor from the intake pipe, through electrochemical reaction, in case detect specific type's gas, through electrochemical reaction, changes the chemical quantity of this gas into the analog output of electric signal, sends audible-visual alarm and teletransmission alarm signal to the control room. The gas detection device is provided with two valves, one for controlling the purging gas inlet and the other for controlling the detection gas outlet. When the purging is started, the valve of the purging air inlet is closed, the opening of the valve of the air inlet is detected, the gas can conveniently pass through the tube cavity provided with the gas sensor, and if explosive gas is detected, the gas detector sends out an audible and visual alarm signal and transmits the signal to the control room; if explosive gas is not detected, after a given time, the purging gas inlet valve is automatically opened, the detecting gas port valve is closed, and normal purging is started. The detection device only needs a 24VDC or 220VAC power supply, can output 4-20mA (HART optional) signals, and can give out sound and light alarm. The danger that the explosion-proof motor is filled with explosive gas carelessly is solved, and serious safety accidents are avoided.
The working principle of the present invention is explained with reference to fig. 1 to 3:
in fig. 1, the explosive gas detection device 4 is first installed in the purge line 3. The explosive gas detection device 4 is then switched on to the power supply. Again, the explosive gas detection means 4 output is directed to the control room.
In fig. 2 and 3, the intake valve 4-1 is first closed. The outlet valve 4-2 is then opened. Thirdly, the purge gas is blown in through the mounting tube 4-7 and flows out through the gas lumen 4-3. Fourthly, the state works for 10s (the time can be adjusted), if explosive gas is detected, the relay acts, the alarm 4-4 gives out audible and visual alarm, and signals are transmitted to the control room through the junction box 4-6; if the air inlet valve 4-1 is not operated, the air outlet valve 4-2 is closed, and the normal purging stage is carried out.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. The utility model provides an explosion-proof machine sweeps and admits air explosive gas detection device, it includes frame (1), sweeps device (2) and sweeps pipeline (3), sweeps device (2) and installs on frame (1), sweeps pipeline (3) and sweep device (2) and be connected and sweep gas, its characterized in that for sweeping device (2) provide: the explosive gas detection device (4) comprises a gas inlet valve (4-1), a gas outlet valve (4-2), a gas tube cavity (4-3), an alarm (4-4), a detection device main body (4-5), a junction box (4-6) and a mounting tube (4-7), wherein the mounting tube (4-7) is installed on the purging pipeline (3) in series, the gas tube cavity (4-3) is installed at the lower end of the mounting tube (4-7) and communicated with the gas tube cavity (4-3), the gas outlet valve (4-2) is installed on the gas tube cavity (4-3), the gas inlet valve (4-1) is installed at one end of the mounting tube (4-7), the detection device main body (4-5) is installed on the mounting tube (4-7), the alarm (4-4) is arranged on the detection device main body (4-5), and the junction box (4-6) is arranged on one side of the detection device main body (4-5).
2. The explosion-proof motor sweeps explosive gas detection device that admits air of claim 1, characterized in that: the explosive gas detection device (4) further comprises a gas sensor which is arranged in the gas tube cavity (4-3).
3. The explosion-proof motor sweeps explosive gas detection device that admits air of claim 1, characterized in that: an explosive gas detection device (4) is mounted on the purge line (3) near the gas inlet side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470228.4U CN212483447U (en) | 2020-07-23 | 2020-07-23 | Explosion-proof motor sweeps explosive gas detection device that admits air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470228.4U CN212483447U (en) | 2020-07-23 | 2020-07-23 | Explosion-proof motor sweeps explosive gas detection device that admits air |
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| Publication Number | Publication Date |
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| CN212483447U true CN212483447U (en) | 2021-02-05 |
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| CN202021470228.4U Active CN212483447U (en) | 2020-07-23 | 2020-07-23 | Explosion-proof motor sweeps explosive gas detection device that admits air |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812182A (en) * | 2020-07-23 | 2020-10-23 | 佳木斯电机股份有限公司 | Explosion-proof motor sweeps explosive gas detection device that admits air |
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2020
- 2020-07-23 CN CN202021470228.4U patent/CN212483447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812182A (en) * | 2020-07-23 | 2020-10-23 | 佳木斯电机股份有限公司 | Explosion-proof motor sweeps explosive gas detection device that admits air |
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