CN201673140U - Point type combustible gas detector with output of 4-20mA - Google Patents
Point type combustible gas detector with output of 4-20mA Download PDFInfo
- Publication number
- CN201673140U CN201673140U CN2010201956946U CN201020195694U CN201673140U CN 201673140 U CN201673140 U CN 201673140U CN 2010201956946 U CN2010201956946 U CN 2010201956946U CN 201020195694 U CN201020195694 U CN 201020195694U CN 201673140 U CN201673140 U CN 201673140U
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- fixedly connected
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Abstract
The utility model relates to a gas concentration detector, which is composed of a subbase, an upper cover, a sensor, a compaction nut, and a cable; the upper cover is fixedly connected with the subbase through a connecting thread III, a nameplate is fixedly connected to the upper end face of the upper cover, the sensor is fixedly connected with a taper-shaped column table II of the subbase through a connecting thread II, the compaction nut is fixedly connected with a taper-shaped column table I of the subbase through a connecting thread I, a circuit board is fixedly connected in a cavity of the subbase, and the cable passes through a central throughhole of the compaction nut and is fixedly connected with the circuit board. The detector is capable of transforming the concentration of the combustible gas in the air of a detected working field to a standard current signal according to a direct ratio relation, displaying a detection value on an instrument and alarming based on the detection result so as to detect and prevent an explosion.
Description
Technical field
The utility model relates to a kind of gas concentration detector, particularly a kind ofly the concentration of inflammable gas in the detected workplace air can be converted into the normalized current signal according to proportional relation, and detected value can be shown on instrument also and can report to the police according to detection case, to reach the some type combustible gas probe of the realization 4-20mA output of surveying quick-fried and explosion-proof purpose.
Background technology
The 4-20mA export technique antijamming capability that the combustible gas probe of being sold in the market adopts is very poor, can guarantee that the effective propagation path of data precision is short, after detector breaks down, can't realize the automatic anticipation of fault, and carry out alarm.
The utility model content
Technical problem to be solved in the utility model provide a kind of stable performance, low in energy consumption, power range is wide, sensitivity is reliable, the output of long service life, passive switch amount, and it is simple in structure, processing cost is low, the some type combustible gas probe of the realization 4-20mA output that practicality is very strong.
For solving the problems of the technologies described above, the utility model is realized as follows: the some type combustible gas probe of realization 4-20mA described in the utility model output is made up of base, loam cake, sensor, gland nut and cable; The bottom of base is a rectangular boss, has three manholes and a threaded hole on the rectangular boss, and screw retention is connected in the threaded hole on the rectangular boss; The upper surface of rectangular boss is fixedly connected with cylinder table, has cylindrical hole, base seal on the cylinder table; The upper end medial surface of cylinder table is provided with connecting thread three, the cylindrical side of the cylinder table of base is fixedly connected with tapered cylinder platform one and tapered cylinder platform two, the center of tapered cylinder platform one is a manhole, the manhole medial surface of port part is provided with connecting thread one, the center of tapered cylinder platform two is a manhole, and the manhole medial surface is provided with connecting thread two; Loam cake is step-like right cylinder, is provided with connecting thread three on the face of cylinder, the cylindrical outside, and loam cake is fixedlyed connected with base by connecting thread three; O-ring seal is fixed in the annular groove that the open circles pylon medial surface of the cylindrical outer side surface of loam cake and base forms; Nameplate is fixedly connected on the upper surface of loam cake; Sensor relies on connecting thread two to fixedly connected with the tapered cylinder platform two of base, and sensor cover relies on connecting thread four to fixedly connected with sensor; Gland nut relies on connecting thread one to fixedly connected with the tapered cylinder platform one of base, and pad and rubber ring are connected between gland nut and the tapered cylinder platform one; Circuit board is fixedly connected in the chamber of base, and cable sees through the central through hole of gland nut, fixedlys connected with circuit board.
Good effect of the present utility model: the some type combustible gas probe of realization 4-20mA output described in the utility model, be converted into the normalized current signal by concentration according to proportional relation with inflammable gas in the detected workplace air, and detected value can be shown on instrument also and can report to the police according to detection case, survey quick-fried and explosion-proof purpose to reach, stable performance, low in energy consumption, power range is wide, sensitivity is reliable, the output of long service life, passive switch amount, and it is simple in structure, processing cost is low, and practicality is very strong.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation one of the present utility model
Fig. 2 is a structural representation two of the present utility model
Fig. 3 is a diagrammatic cross-section three of the present utility model
Fig. 4 is a diagrammatic cross-section four of the present utility model
Fig. 5 is a diagrammatic cross-section five of the present utility model
Among the figure, 1 base, 2 loam cakes, 3 sensors
4 nameplates, 5 gland nuts, 6 cables
7 connecting threads, one 8 screws, 9 connecting threads two
10 O-ring seals, 11 connecting threads, 3 12 circuit boards
13 sensor cover, 14 connecting threads, 4 15 pads
16 rubber rings, 17 tapered cylinder platforms, one 18 tapered cylinder platforms two
Embodiment
To shown in Figure 5, the some type combustible gas probe of realization 4-20mA described in the utility model output is made up of base (1), loam cake (2), sensor (3), gland nut (5) and cable (6) as Fig. 1; The bottom of base (1) is a rectangular boss, has three manholes and a threaded hole on the rectangular boss, and screw (8) is fixedly connected in the threaded hole on the rectangular boss; The upper surface of rectangular boss is fixedly connected with cylinder table, has cylindrical hole, base seal on the cylinder table; The upper end medial surface of cylinder table is provided with connecting thread three (11), the cylindrical side of the cylinder table of base (1) is fixedly connected with tapered cylinder platform one (17) and tapered cylinder platform two (18), the center of tapered cylinder platform one (17) is a manhole, the manhole medial surface of port part is provided with connecting thread one (7), the center of tapered cylinder platform two (18) is a manhole, and the manhole medial surface is provided with connecting thread two (9); Loam cake (2) is step-like right cylinder, is provided with connecting thread three (11) on the face of cylinder, the cylindrical outside, and loam cake (2) is fixedlyed connected with base (1) by connecting thread three (11); O-ring seal (10) is fixed in the annular groove that the cylinder table medial surface of the cylindrical outer side surface of loam cake (2) and base (1) forms; Nameplate (4) is fixedly connected on the upper surface of loam cake (2); Sensor (3) relies on connecting thread two (9) to fixedly connected with the tapered cylinder platform two (18) of base (1), and sensor cover (13) relies on connecting thread four (14) to fixedly connected with sensor (3); Gland nut (5) relies on connecting thread one (7) to fixedly connected with the tapered cylinder platform one (17) of base (1), and pad (15) and rubber ring (16) are connected between gland nut (5) and the tapered cylinder platform one (17); Circuit board (12) is fixedly connected in the chamber of base (1), and cable (6) sees through the central through hole of gland nut (5), fixedlys connected with circuit board (12).
The course of work of the present utility model is:
The utility model at first carries out signal sampling by sensor when work, convert gas concentration value to by operational amplification circuit again, and this concentration value is uploaded to host computer by the 4-20mA simulating signal, data terminal receives this data, is shown as current this detector concentration value after the parsing.
Claims (1)
1. realize the some type combustible gas probe of 4-20mA output, it is characterized in that: form by base, loam cake, sensor, gland nut and cable; The bottom of base is a rectangular boss, has three manholes and a threaded hole on the rectangular boss, and screw retention is connected in the threaded hole on the rectangular boss; The upper surface of rectangular boss is fixedly connected with cylinder table, has cylindrical hole, base seal on the cylinder table; The upper end medial surface of cylinder table is provided with connecting thread three, the cylindrical side of the cylinder table of base is fixedly connected with tapered cylinder platform one and tapered cylinder platform two, the center of tapered cylinder platform one is a manhole, the manhole medial surface of port part is provided with connecting thread one, the center of tapered cylinder platform two is a manhole, and the manhole medial surface is provided with connecting thread two; Loam cake is step-like right cylinder, is provided with connecting thread three on the face of cylinder, the cylindrical outside, and loam cake is fixedlyed connected with base by connecting thread three; O-ring seal is fixed in the annular groove that the open circles pylon medial surface of the cylindrical outer side surface of loam cake and base forms; Nameplate is fixedly connected on the upper surface of loam cake; Sensor relies on connecting thread two to fixedly connected with the tapered cylinder platform two of base, and sensor cover relies on connecting thread four to fixedly connected with sensor; Gland nut relies on connecting thread one to fixedly connected with the tapered cylinder platform one of base, and pad and rubber ring are connected between gland nut and the tapered cylinder platform one; Circuit board is fixedly connected in the chamber of base, and cable sees through the central through hole of gland nut, fixedlys connected with circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201956946U CN201673140U (en) | 2010-05-19 | 2010-05-19 | Point type combustible gas detector with output of 4-20mA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201956946U CN201673140U (en) | 2010-05-19 | 2010-05-19 | Point type combustible gas detector with output of 4-20mA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201673140U true CN201673140U (en) | 2010-12-15 |
Family
ID=43330552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201956946U Expired - Lifetime CN201673140U (en) | 2010-05-19 | 2010-05-19 | Point type combustible gas detector with output of 4-20mA |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201673140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103729951A (en) * | 2013-11-20 | 2014-04-16 | 哈尔滨东方报警设备开发有限公司 | Audible and visual alarm used for series connection of 4-20MA two-wire electric current loops |
| CN108869512A (en) * | 2018-09-06 | 2018-11-23 | 广西玉柴机器股份有限公司 | The belt pulley clamp nut of speed probe can be connected |
-
2010
- 2010-05-19 CN CN2010201956946U patent/CN201673140U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103729951A (en) * | 2013-11-20 | 2014-04-16 | 哈尔滨东方报警设备开发有限公司 | Audible and visual alarm used for series connection of 4-20MA two-wire electric current loops |
| CN108869512A (en) * | 2018-09-06 | 2018-11-23 | 广西玉柴机器股份有限公司 | The belt pulley clamp nut of speed probe can be connected |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |