CN210426818U - Mining intrinsic safety type temperature sensor - Google Patents
Mining intrinsic safety type temperature sensor Download PDFInfo
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- CN210426818U CN210426818U CN201921635285.0U CN201921635285U CN210426818U CN 210426818 U CN210426818 U CN 210426818U CN 201921635285 U CN201921635285 U CN 201921635285U CN 210426818 U CN210426818 U CN 210426818U
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- circuit board
- protective shell
- temperature sensor
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- probe
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Abstract
The utility model discloses a mining intrinsic safety type temperature sensor, which comprises a stainless steel shell (8), an end cover (9), an annular magnet (2), a brass probe protective shell (1), a singlechip circuit board (6) and a digital temperature probe (4) connected with the singlechip circuit board; the top of the brass probe protective shell (1) is provided with an accommodating space for accommodating the digital temperature probe (4), the bottom of the brass probe protective shell (1) is provided with an annular accommodating space for accommodating the annular magnet (2), and the annular magnet (2) is bonded in the annular accommodating space through a polyurethane rubber ring; the single chip microcomputer circuit board (6) and the brass probe protective shell (1) are fixed by a plastic stud (12); the installation and fixing mode of annular magnet adsorption is adopted, so that the installation problem that dynamic welding and flame cutting are forbidden in an explosion-proof place is solved; after the brass probe protective shell and the annular magnet homopolyurethane are made, the combination is tighter, and the brass probe protective shell is not easy to fall off.
Description
Technical Field
The utility model relates to a mining ann's type temperature sensor belongs to mining sensing check out test set technical field.
Background
The thermistor that the main temperature sensor on the market at present adopted directly links to each other with the inside metal wire of cable the mode of obtaining the temperature, and the epoxy that reuses at last encapsulates thermistor and tie point inside the casing and so has a lot of shortcomings: 1. the stability is poor; after a period of use, calibration is difficult; 2. the existing mining temperature sensor has poor explosion-proof performance, particularly is not ideal in the aspects of water resistance and moisture resistance, and 3, the temperature sensor is installed and fixed in a threaded mode, and the convenience of installing the sensor on the existing underground equipment is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to prior art provides a mining ann's type temperature sensor.
The utility model adopts the following technical scheme:
a mining intrinsic safety type temperature sensor comprises a stainless steel shell 8, an end cover 9, an annular magnet 2, a brass probe protective shell 1, a single chip microcomputer circuit board 6 and a digital temperature probe 4 connected with the single chip microcomputer circuit board; the top of the brass probe protection shell 1 is provided with an accommodating space for accommodating the digital temperature probe 4, the bottom of the brass probe protection shell 1 is provided with an annular accommodating space for accommodating the annular magnet 2, and the annular magnet 2 is bonded in the annular accommodating space through a polyurethane rubber ring; the single chip microcomputer circuit board 6 and the brass probe protective shell 1 are fixed by a plastic stud 12.
The digital temperature probe 4 is positioned at one side, close to a measured object, of the bottom of the brass probe protective shell 1.
Mining ann's type temperature sensor, digital temperature probe 4 uses heat conduction silica gel 5 to fix and is close to testee one side in brass probe protective housing 1 bottom.
According to the mining intrinsic safety type temperature sensor, the stainless steel shell 8 is fixed on the brass probe protection shell 1 through internal threads, and the singlechip circuit board 6 is surrounded inside the brass probe protection shell.
According to the mining intrinsic safety type temperature sensor, one side of a stainless steel shell 8 is provided with an opening, a waterproof connector 10 matched with the opening is arranged, and an explosion-proof cable 11 is led out to a temperature monitoring substation through the waterproof connector 10.
The mining intrinsic safety type temperature sensor is characterized in that polyurethane is adopted for glue sealing between the single chip microcomputer circuit board 6 and the digital temperature probe 4 and between the single chip microcomputer circuit board 6 and the stainless steel shell 8, and polyurethane is formed for glue sealing between the single chip microcomputer circuit board 6 and the digital temperature probe 4 and between the single chip microcomputer circuit board 6 and the stainless steel shell 8.
According to the mining intrinsic safety type temperature sensor, the end cover 9 is provided with external threads, the top of the stainless steel shell 8 is provided with internal threads, and the end cover 9 with the edge coated with the sealant is screwed into the top of the stainless steel shell 8.
The utility model discloses following beneficial effect has:
1. the installation and fixing mode of annular magnet adsorption is adopted, so that the installation problem that dynamic welding and flame cutting are forbidden in an explosion-proof place is solved;
2. after the brass probe protective shell 1 and the annular magnet 2 are made of homopolymerized polyurethane, the combination is tighter, and the brass probe protective shell is not easy to fall off; the brass protective shell is rapid in heat conduction, and the speed and the precision of temperature measurement are improved.
Drawings
Fig. 1 is a schematic structural view (external) of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
1, a brass probe protective shell; 2 a ring magnet; 3, polyurethane rubber ring; 4 digital temperature probe; 5, heat-conducting silica gel; 6 single chip circuit board; 7 polyurethane sealant; 8 stainless steel outer casing; 9 end covers; 10, a waterproof joint; 11 explosion-proof cable; 12 plastic studs.
Detailed Description
The present invention will be described in detail with reference to specific examples.
Referring to fig. 1 and 2, an embodiment of the present invention provides a mining intrinsically safe temperature sensor, which includes a stainless steel casing 8, an annular magnet 2, a brass probe protective casing 1, a single chip circuit board 6, and a digital temperature probe 4 connected to the single chip circuit, wherein a cylindrical or other-shaped accommodating space for accommodating the digital temperature probe 4 is disposed at the top of the brass probe protective casing 1, the digital temperature probe 4 is fixed inside the brass probe protective casing 1 through a heat conductive silica gel 5, an annular accommodating space for accommodating the annular magnet 2 is disposed at the bottom of the brass probe protective casing 1, the annular magnet 2 is bonded in the annular accommodating space through a polyurethane adhesive ring, the temperature sensor is integrally adsorbed on a measured object through the annular magnet 2, the brass probe protective shell 1 is closely contacted with the measured object, the heat conduction is good, and the temperature is rapidly transmitted to the digital temperature probe 4 in the brass probe protective shell. The mounting mode of magnet adsorption solves the mounting problem that dynamic welding and flame cutting are forbidden in an explosion-proof place;
after the brass probe protective shell 1 and the annular magnet 2 are made of homopolymerized polyurethane, the combination is tighter, and the brass probe protective shell is not easy to fall off; the brass protective shell is rapid in heat conduction, and the speed and the precision of temperature measurement are improved.
The single chip microcomputer circuit board 6 and the brass probe protective shell 1 are fixed by plastic studs 12, and then polyurethane is adopted for sealing between the single chip microcomputer circuit board 6 and the digital temperature probe 4 and between the single chip microcomputer circuit board 6 and the stainless steel shell 8. The plastic studs and the polyurethane are both poor thermal conductors, and can isolate the influence of the temperature change of the single chip microcomputer circuit board 6 on the digital temperature probe 4.
The stainless steel shell 8 is fixed on the brass probe protective shell 1 through internal threads, the singlechip circuit board 6 is surrounded in the brass probe protective shell, and the explosion-proof cable 11 is led out to the temperature monitoring substation through an opening arranged on one side of the stainless steel shell 8 and a waterproof connector 10 matched with the opening; the end cover 9 is provided with external threads, the top of the stainless steel shell 8 is provided with internal threads, and after all parts except the end cover 9 are installed, polyurethane glue sealing is carried out. After the polyurethane glue seal is solidified and cooled, the end cover 9 with the edge coated with the sealant can be screwed in the top of the stainless steel shell 8. The sealing mode ensures that harmful impurities such as water, coal powder, gas, dust and the like in an explosion-proof place enter; the tensile strength of the explosion-proof cable 11 of the sensor is effectively improved.
Adsorb temperature sensor on the plane of testee through annular magnet 2, the testee takes place heat exchange with the inseparable laminating of brass probe protective housing 1 fast, and the heat transmits to brass probe protective housing 1, heat conduction silica gel 5 and digital temperature probe 4 in proper order rapidly. After the digital temperature probe 4 obtains the temperature signal, the temperature signal is converted into a digital signal and transmitted to the singlechip circuit board 6. The single chip circuit board 6 transmits the temperature signal to the temperature monitoring substation in an RS485 mode after conventional signal processing.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (7)
1. The mining intrinsic safety type temperature sensor is characterized by comprising a stainless steel shell (8), an end cover (9), an annular magnet (2), a brass probe protective shell (1), a single chip microcomputer circuit board (6) and a digital temperature probe (4) connected with the single chip microcomputer circuit board; the top of the brass probe protective shell (1) is provided with an accommodating space for accommodating the digital temperature probe (4), the bottom of the brass probe protective shell (1) is provided with an annular accommodating space for accommodating the annular magnet (2), and the annular magnet (2) is bonded in the annular accommodating space through a polyurethane rubber ring; the single chip microcomputer circuit board (6) and the brass probe protective shell (1) are fixed by a plastic stud (12).
2. The mining intrinsic safety type temperature sensor according to claim 1, characterized in that the digital temperature probe (4) is positioned at the side of the bottom of the brass probe protective shell (1) close to the measured object.
3. The mining intrinsic safety type temperature sensor according to claim 2, characterized in that the digital temperature probe (4) is fixed on the side of the bottom of the brass probe protective shell (1) close to the measured object by using heat-conducting silica gel (5).
4. The mining intrinsically safe temperature sensor of claim 1, wherein the stainless steel case (8) is fixed to the brass probe case (1) by internal threads, enclosing the monolithic computer circuit board (6) inside.
5. The mining intrinsically safe temperature sensor of claim 4, characterized in that an opening is formed in one side of the stainless steel shell (8), a waterproof joint (10) matched with the opening is arranged, and the explosion-proof cable (11) is led out to the temperature monitoring substation through the waterproof joint (10).
6. The mining intrinsic safety type temperature sensor according to claim 1, wherein polyurethane is adopted for glue sealing between the single chip microcomputer circuit board (6) and the digital temperature probe (4) and between the single chip microcomputer circuit board (6) and the stainless steel shell (8), and polyurethane is formed for glue sealing between the single chip microcomputer circuit board (6) and the digital temperature probe (4) and between the single chip microcomputer circuit board (6) and the stainless steel shell (8).
7. The mining intrinsic safety type temperature sensor according to claim 1, characterized in that the end cap (9) is provided with external threads, the top of the stainless steel shell (8) is provided with internal threads, and the end cap (9) with the edge coated with the sealant is screwed into the top of the stainless steel shell (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635285.0U CN210426818U (en) | 2019-09-29 | 2019-09-29 | Mining intrinsic safety type temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635285.0U CN210426818U (en) | 2019-09-29 | 2019-09-29 | Mining intrinsic safety type temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210426818U true CN210426818U (en) | 2020-04-28 |
Family
ID=70367973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921635285.0U Active CN210426818U (en) | 2019-09-29 | 2019-09-29 | Mining intrinsic safety type temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210426818U (en) |
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2019
- 2019-09-29 CN CN201921635285.0U patent/CN210426818U/en active Active
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