CN201548506U - Methane sensor rear cover structure for coal mines - Google Patents
Methane sensor rear cover structure for coal mines Download PDFInfo
- Publication number
- CN201548506U CN201548506U CN2008201572046U CN200820157204U CN201548506U CN 201548506 U CN201548506 U CN 201548506U CN 2008201572046 U CN2008201572046 U CN 2008201572046U CN 200820157204 U CN200820157204 U CN 200820157204U CN 201548506 U CN201548506 U CN 201548506U
- Authority
- CN
- China
- Prior art keywords
- rear cover
- screw
- head cap
- socket head
- cap screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a methane sensor rear cover structure for coal mines, which belongs to the filed of coal mine safety appliances. The structure is characterized in that a rear cover is fixedly connected with an outer casing via a screw, a small flat washer and a spring washer are arranged between the rear cover and the outer casing, one end of the screw is tightly screwed inside the outer casing, while the other end is locked on the rear cover via an open fastener welded on the rear cover, and a seal ring is disposed at a connection gap position of the rear cover and the outer casing. An additional dropping prevention measure of the screw of the rear cover effectively prevents the screw from dropping, guarantees work efficiency of a methane sensor, and simultaneously prolongs service life of the same, thereby avoiding related safety hidden risks and ensuring safety of underground work.
Description
Technical field:
The utility model relates to the sensor construction that is used to survey methane concentration in the industries such as a kind of colliery, is specially to be used for methane transducer and to prevent the methane sensor for coal mine rear cover structure that comes off.
Background technology:
In commercial production, particularly coal, petrochemical industry, flammable explosive gas are the main threats of safety in production, and in recent years, the mine safety explosion accident frequently takes place, and causes tremendous loss; Simultaneously, inflammable gas also can pollute environment after discharging, and as natural-gas such as methane, belongs to colorless and odorless gas; Therefore; have only by sensitive reliable detection instrument and detect; survey the aerial concentration of methane by methane transducer in the existing market; and then avoid the generation of disaster; and methane transducer in use regular meeting coming off of screw appears; and then influencing the detection quality of methane transducer, cisco unity malfunction causes harm can not in time find when occurring.
The utility model content:
In order to solve deficiency of the prior art, the utility model provides a kind of methane sensor for coal mine rear cover structure that is used for methane transducer.
The utility model is to realize by following technical scheme:
Methane transducer, its structure mainly comprises: handle, stainless steel casing, the aviation socket, mainboard, alarm lamp, display window, air chamber, bonnet, O-ring seal, the aviation socket, single-chip microcomputer etc., mainboard is provided with the LED display circuit, the LED display circuit, microcontroller system circuit, the current signal output circuit, power supply decoupling filtering circuit, power supply stabilization circuit, the power-off signal output circuit, the dense electric bridge testing circuit of height, the frequency signal output circuit, sound alarm circuit, the data storing circuit, the cmos circuit input end grounding of usefulness not, shaking control receives and the function button circuit, handle is welded on the upper end of stainless steel casing, the aviation socket is welded on the side of shell, mainboard is fixed on the medial surface of shell by ten pan head screws, alarm lamp is fixed on the both sides, lower end of shell with nut, air chamber is welded on the middle part of shell lower end, display window is fixed on pressing plate with nut, between luffer boards and the shell, display window is provided with O-ring seal with the place, slit that contacts of shell, bonnet is fixedlyed connected with shell by screw, be provided with little plain washer and spring washer between bonnet and shell, screw one end is tightened in the enclosure, the other end fixes on the bonnet with the open card padlock that is welded on the bonnet, and bonnet is connected the place, slit and is provided with O-ring seal with shell.
An opening buckle is set on institute's bonnet, little plain washer and spring washer are placed on the socket head cap screw in proper order, the opening buckle can well be locked in socket head cap screw on the bonnet, effectively prevented coming off of socket head cap screw, after tightening socket head cap screw, spring washer is given elastic force of socket head cap screw, pushes against socket head cap screw, makes its difficult drop-off.
The utlity model has following beneficial effect: the slip-off preventing measure of bonnet, effectively prevented coming off of screw, guaranteed safe, effective work of sensor.
Description of drawings:
Fig. 1 is the methane transducer structural representation.
Fig. 2 is a methane transducer shell mechanism synoptic diagram.
Fig. 3 is a methane transducer rear cover structure synoptic diagram.
Among the figure: 1 shell, 2 bonnets, 3 handles, 4 nameplates, 5, alarm lamp, 6 socket head cap screws, 7 O-ring seal a, 80 pan head screw a, 90 pan head screw b, 10 O-ring seal b, 11
Embodiment:
Below in conjunction with accompanying drawing the utility model is further specified:
With reference to accompanying drawing 1,2,3, methane transducer, its structure comprises: handle (3), shell (1), aviation socket (14), mainboard (15), alarm lamp (5), display window, air chamber (11), bonnet (2), O-ring seal etc., mainboard is provided with the LED display circuit, the LED display circuit, microcontroller system circuit, the current signal output circuit, power supply decoupling filtering circuit, power supply stabilization circuit, the power-off signal output circuit, the dense electric bridge testing circuit of height, the frequency signal output circuit, sound alarm circuit, the data storing circuit, the cmos circuit input end grounding of usefulness not, shaking control receives and the function button circuit, handle (3) is welded on the upper end of stainless steel casing (1), aviation socket (14) is welded on the side of shell (1), mainboard (15) is by ten pan head screw a (8), ten pan head screw b (9) are fixed on the medial surface of shell (1), alarm lamp (5) is fixed on the both sides, lower end of shell, air chamber (11) is welded on the middle part of shell (1) lower end, display window is gone up with screw (13) is fixing inside the shell, display window is provided with O-ring seal a (7) with the place, slit that contacts of shell (1), and bonnet (2) is fixedlyed connected with shell (1) by socket head cap screw (6).
An opening buckle (16) is set on bonnet (2), and be nested with a little plain washer (17) and a spring washer (18) in the outside of socket head cap screw (6), opening buckle (16) can well be locked in socket head cap screw (6) on the bonnet (2), effectively prevented coming off of socket head cap screw (6), after tightening socket head cap screw (6), spring washer (17) is given (6) elastic force of socket head cap screw, pushes against socket head cap screw (6), makes its difficult drop-off.
Claims (3)
1. methane sensor for coal mine rear cover structure, it is characterized in that: an opening buckle (16) is set on the bonnet (2), and little plain washer (17) and spring washer (18) order is placed on the socket head cap screw (6), opening buckle (16) can well be locked in socket head cap screw (6) on the bonnet (2), effectively prevented coming off of socket head cap screw (6), after tightening socket head cap screw (6), spring washer (17) is given (6) elastic force of socket head cap screw, push against socket head cap screw (6), make its difficult drop-off.
2. methane sensor for coal mine rear cover structure according to claim 1 is characterized in that: an opening buckle (16) is set on bonnet (2).
3. methane sensor for coal mine rear cover structure according to claim 1 is characterized in that: be placed on the socket head cap screw (6) at little plain washer (17) and spring washer (18) order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201572046U CN201548506U (en) | 2008-12-16 | 2008-12-16 | Methane sensor rear cover structure for coal mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008201572046U CN201548506U (en) | 2008-12-16 | 2008-12-16 | Methane sensor rear cover structure for coal mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201548506U true CN201548506U (en) | 2010-08-11 |
Family
ID=42603682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008201572046U Expired - Fee Related CN201548506U (en) | 2008-12-16 | 2008-12-16 | Methane sensor rear cover structure for coal mines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201548506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280144A (en) * | 2011-06-09 | 2011-12-14 | 福建顺昌虹润精密仪器有限公司 | Instrument shell |
-
2008
- 2008-12-16 CN CN2008201572046U patent/CN201548506U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280144A (en) * | 2011-06-09 | 2011-12-14 | 福建顺昌虹润精密仪器有限公司 | Instrument shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20121216 |