CN203339660U - Methane detection power-off safety type explosion-proof frequency conversion speed regulator - Google Patents
Methane detection power-off safety type explosion-proof frequency conversion speed regulator Download PDFInfo
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- CN203339660U CN203339660U CN2013204423383U CN201320442338U CN203339660U CN 203339660 U CN203339660 U CN 203339660U CN 2013204423383 U CN2013204423383 U CN 2013204423383U CN 201320442338 U CN201320442338 U CN 201320442338U CN 203339660 U CN203339660 U CN 203339660U
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- methane
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- frequency conversion
- speed regulator
- explosion
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Abstract
The utility model discloses a methane detection power-off safety type explosion-proof frequency conversion speed regulator. The frequency conversion speed regulator is arranged in an explosion-proof casing. A power supply input line of the frequency conversion speed regulator is connected in series with a methane power-off module. An intrinsically safe type methane detection sensor is arranged outside the explosion-proof casing. The intrinsically safe type methane detection sensor is connected with the methane power-off module through a signal line. The frequency conversion speed regulator provided by the utility model has the advantages that the power supply input line of the frequency conversion speed regulator in the explosion-proof casing of the explosion-proof frequency conversion speed regulator is connected in series with the methane power-off module; the intrinsically safe type methane detection sensor is connected with the methane power-off module through the signal line; the intrinsically safe type methane detection sensor detects the methane concentration of the position of an electric locomotive; when the detected result is lower than the power-off value preset by the methane power-off module, a contactor is closed, and the frequency conversion speed regulator is powered, thus the electric locomotive can normally run; and when the intrinsically safe type methane detection sensor detects that the methane concentration of the position of the electric locomotive reaches or exceeds the preset power-off value, the methane power-off module immediately cuts off the power or the contactor is not closed, and the power supply of the frequency conversion speed regulator is cut off to ensure safety.
Description
Technical field
The utility model relates to a kind of mining electric locomotive explosion-proof variable frequency variable speed device.
Background technology
For the explosion-proof variable frequency variable speed device on mining electric locomotive, there is the speed governing response fast at present, efficiency is high, the energy-saving effect outstanding feature, because mining electric locomotive is used for colliery, there is methane gas in coal mine, in order to guarantee safety, must control the indoor location methane detector the mining electric locomotive driver, and also must the harness standby explosion prevention function of methane detector, due to mining electric locomotive driver control room narrow space, an explosion-proof variable frequency variable speed device and a methane detector are installed simultaneously, make the space of electric locomotive crowded, the bad operation of driver, explosion-proof variable frequency variable speed device and methane detector have the explosion-resistant enclosure of oneself, cause the waste in production, and explosion-proof variable frequency variable speed device and methane detector all must obtain certification of conformity of an instrument for explosive atmosphere, product under certification of conformity of an instrument for explosive atmosphere all can produce administrative expenses, and cause production cost.
The utility model content
The purpose of this utility model is to provide a kind of methane and detects outage explosion-proofing safe variable-frequency governor.
The technical solution of the utility model is, a kind of methane detects outage explosion-proofing safe variable-frequency governor, variable-frequency governor is contained in explosion-resistant enclosure, serial connection methane power-off modular on the variable-frequency governor power input line, be provided with intrinsic safety type methane detecting sensor outside explosion-resistant enclosure, intrinsic safety type methane detecting sensor connects the methane power-off modular by holding wire.
The utlity model has following technique effect, serial connection methane power-off modular on the power input line of the variable-frequency governor dress in the explosion-resistant enclosure of explosion-proof variable frequency variable speed device, intrinsic safety type methane detecting sensor connects the methane power-off modular by holding wire, intrinsic safety type methane detecting sensor detects the methane concentration of electric locomotive position, during the power-down value preset lower than the methane power-off modular of the result after detecting, the contactor adhesive, variable-frequency governor obtains electric, and electric locomotive can normally travel; When the methane concentration of intrinsic safety type methane detecting sensor detection electric locomotive position meets or exceeds preset power-down value, the alkane power-off modular cuts off the power supply or not adhesive of contactor immediately, cuts off the variable-frequency governor power supply, to guarantee safety.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit block diagram of the present utility model.
Embodiment
As shown in Figure 1 and Figure 2, a kind of methane detects outage explosion-proofing safe variable-frequency governor, variable-frequency governor 1 is contained in explosion-resistant enclosure 2, serial connection methane power-off modular 3 on variable-frequency governor 1 power input line 4, be provided with intrinsic safety type methane detecting sensor 5 outside explosion-resistant enclosure 2, intrinsic safety type methane detecting sensor 5 connects methane power-off modular 3 by holding wire 6.
Claims (1)
1. a methane detects outage explosion-proofing safe variable-frequency governor, variable-frequency governor (1) is contained in explosion-resistant enclosure (2), it is characterized in that: the upper serial connection of variable-frequency governor (1) power input line (4) methane power-off modular (3), be provided with intrinsic safety type methane detecting sensor (5) outside explosion-resistant enclosure (2), intrinsic safety type methane detecting sensor (5) connects methane power-off modular (3) by holding wire (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204423383U CN203339660U (en) | 2013-07-24 | 2013-07-24 | Methane detection power-off safety type explosion-proof frequency conversion speed regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204423383U CN203339660U (en) | 2013-07-24 | 2013-07-24 | Methane detection power-off safety type explosion-proof frequency conversion speed regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203339660U true CN203339660U (en) | 2013-12-11 |
Family
ID=49708316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204423383U Expired - Fee Related CN203339660U (en) | 2013-07-24 | 2013-07-24 | Methane detection power-off safety type explosion-proof frequency conversion speed regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203339660U (en) |
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2013
- 2013-07-24 CN CN2013204423383U patent/CN203339660U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20160724 |