CN211824773U - Safety-increasing type entity sensor - Google Patents
Safety-increasing type entity sensor Download PDFInfo
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- CN211824773U CN211824773U CN202020394438.3U CN202020394438U CN211824773U CN 211824773 U CN211824773 U CN 211824773U CN 202020394438 U CN202020394438 U CN 202020394438U CN 211824773 U CN211824773 U CN 211824773U
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Abstract
The utility model relates to an increase ampere type entity sensor, including sensor temperature sensing subassembly and metal contact thermoscope, sensor temperature sensing subassembly includes temperature sensing element and armoured cable, metal contact thermoscope includes the cavity, the one end of cavity is connected with the body, temperature sensing element has been placed in the body, be provided with the transition circuit board in the cavity, temperature sensing element links to each other with the one end of armoured cable, the other end of armoured cable passes the body and links to each other with the input of transition circuit board, the electrical apparatus introducing device that has explosion-proof function is connected to the output of transition circuit board, electrical apparatus introducing device with cavity sealing connection; and the temperature sensing assembly of the sensor is fixed in the tube body by using a filling material, and the transition circuit board is subjected to bonding, sealing and curing treatment by using a bonding sealing material in the cavity. The utility model discloses can prevent that electric spark and dangerous temperature from producing when reducing the volume.
Description
Technical Field
The utility model relates to an explosion-proof technical field of instrument and meter especially relates to an increase ampere type entity sensor.
Background
In industrial processes and scientific experiments, many substances are easy to burn and cause explosion, such as combustible gas, combustible liquid, combustible dust, combustible fiber and the like. When the explosive dangerous materials are diffused in the air in a large amount due to some reason to form a mixture with the air, when the proper concentration is reached, once the fire source is close to or the ambient temperature reaches the self-ignition temperature of the fire source, the explosion can be caused immediately to cause serious accidents, and the life and property are lost. In order to prevent explosion, there are two methods other than preventing the hazardous materials from being emitted or reducing their explosive mixture concentration by using intensive ventilation, which does not cause explosion: one is to prevent the presence of a fire source or an increase in temperature in the field with an explosive mixture; secondly, if the explosion happens, the explosion is limited within a small range, and the energy of the explosion is not transmitted, so that the explosion in a large range is avoided.
The safety-added sensor is a form of an explosion-proof sensor, and at present, the design conditions adopted by the commonly used explosion-proof sensor are as follows: 1, designing an explosion-proof junction box; 2, designing a wire holder; and 3, designing a locking device. The sensor designed by the method has larger volume because of the design requirements of the cavity of the explosion-proof junction box, the length of the thread and the like, so that the phenomenon that the production field adapts to explosion-proof products is generated for a long time, and the requirement of the production occasion (mainly referring to the appearance and the size of the explosion-proof sensor) is met by the design of the explosion-proof products.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an increase an ampere type entity sensor is provided, can prevent that electric spark and dangerous temperature from producing when reducing the volume.
The utility model provides a technical scheme that its technical problem adopted is: the safety-enhanced entity sensor comprises a sensor temperature sensing assembly and a metal contact temperature measuring body, wherein the sensor temperature sensing assembly comprises a temperature sensing element and an armored cable, the metal contact temperature measuring body comprises a cavity, one end of the cavity is connected with a pipe body, the temperature sensing element is placed in the pipe body, a transition circuit board is arranged in the cavity, the temperature sensing element is connected with one end of the armored cable, the other end of the armored cable penetrates through the pipe body to be connected with the input end of the transition circuit board, the output end of the transition circuit board is connected with an electrical appliance leading-in device with an explosion-proof function, and the electrical appliance leading-in device is hermetically connected with the cavity; and the temperature sensing assembly of the sensor is fixed in the tube body by using a filling material, and the transition circuit board is subjected to bonding, sealing and curing treatment by using a bonding sealing material in the cavity.
The transition circuit board is double-sided circuit board, the thickness of transition circuit board is 2 ~ 2.5mm, temperature resistant range: -40 to 180 ℃.
The aperture of the input end and the aperture of the output end of the transition circuit board are phi 1-phi 1.5, and the interval exists, and the interval range is as follows: the transverse distance is 18 mm-22 mm, and the longitudinal distance is 12 mm-15 mm.
Two fixed positioning holes with the pitch of 10-12 mm are arranged in the center of the transition circuit board, and the diameter of each fixed positioning hole is phi 1.5-phi 2.
The filling material is AL2O3The density is 3.5 to 3.9g/cm3。
The bonding sealing material is flame-retardant epoxy resin with the density of 1.54 +/-0.02 g/cm3。
A clamping sleeve type locking and mounting assembly is arranged outside the pipe body.
Advantageous effects
Since the technical scheme is used, compared with the prior art, the utility model, have following advantage and positive effect: the utility model discloses a to sensor materialization design, reached the function of explosion-proof increase ampere type, through to sensor materialization design, reduced the volume of sensor greatly, can more extensively be applied to the temperature measurement of various needs explosion-proof increase ampere type occasions.
Drawings
FIG. 1 is a schematic structural view of the unfilled material inside the present invention;
fig. 2 is a schematic structural view of the internal filling material of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
The utility model discloses an embodiment relates to an increase ampere type entity sensor, as shown in fig. 1 and fig. 2, including sensor temperature sensing subassembly 1 and metal contact thermoscope 3, sensor temperature sensing subassembly 1 includes temperature sensing element 11 and armored cable 12, metal contact thermoscope 3 includes cavity 31, the one end of cavity 31 is connected with body 32, and body 32 is provided with cutting ferrule formula locking installation component 2 outward. A temperature sensing element 11 is placed in the tube body 32, a transition circuit board 4 is arranged in the cavity 31, the temperature sensing element 11 is connected with one end of an armored cable 12, the other end of the armored cable 12 penetrates through the tube body 32 to be connected with the input end of the transition circuit board 4, the output end of the transition circuit board 4 is connected with an electrical appliance leading-in device 5 with an explosion-proof function, and the electrical appliance leading-in device 5 is hermetically connected with the cavity 31; the sensor temperature sensing assembly 1 is fixed in the pipe body 32 by using a filling material 6, and the transition circuit board 4 is subjected to bonding, sealing and curing treatment in the cavity 31 by using a bonding sealing material 7.
Therefore, the utility model discloses a to sensor materialization design, reached the function of explosion-proof increase ampere type, through to sensor materialization design, reduced the volume of sensor greatly, can be applied to the temperature measurement that various needs explosion-proof increase ampere type closed more extensively.
When the solid safety-increasing sensor is manufactured, a sensor temperature sensing assembly 1 formed by welding and assembling a temperature sensing element 11 and an armored cable 12 is connected with an input end of a transition circuit board 4, an output end of the transition circuit board 4 is connected with an electric appliance lead-in device 5 to form an integral structure, the sensor temperature sensing assembly 1 is placed into a pipe body 32 of a metal contact temperature measuring body 3, the transition circuit board 4 is placed in a cavity 31 of the metal contact temperature measuring body 3, a filling material 6 is filled into the pipe body 32 under a vibration condition, a bonding sealing material 7 is filled into the cavity 31 under a pressure applying condition, and finally the electric appliance lead-in device 5 is hermetically connected with the bonding sealing material 7 through threads to enable the sensor to be a safety-increasing solid, so that the sensor can prevent electric sparks and dangerous temperature from being generated reliably.
Wherein, the transition circuit board is two-sided circuit board, and its thickness is 2 ~ 2.5mm, temperature resistant range: -40 to 180 ℃. The aperture of the input end and the aperture of the output end of the transition circuit board are phi 1-phi 1.5, and a distance exists between the input end and the output end, wherein the distance range is as follows: the transverse distance is 18 mm-22 mm, and the longitudinal distance is 12 mm-15 mm. Two fixed positioning holes with the pitch of 10-12 mm are arranged in the center of the transition circuit board, and the diameter of each fixed positioning hole is phi 1.5-phi 2. The filling material is AL2O3The density is 3.5 to 3.9g/cm3. The bonding sealing material is flame-retardant epoxy resin with the density of 1.54 +/-0.02 g/cm3。
Through the experiment to survey, when adopting the transition circuit board of above-mentioned parameter and filling the sealed technology of bonding to carry out the experiment, its increase a ampere of type entity sensor effect does: 1. the explosion-proof performance meets the 1 st part of the anti-explosion environmental explosion-proof electrical equipment of GB 3836.1-2000: general requirements, GB3836.2-2000 "explosion-proof electric apparatus for explosion-proof environment part 2: flame-proof type "d", GB3836.3-2000 "explosion-proof electric apparatus for explosion-proof environment part 3: increased safety type "e". 2. The volume of the safety-added solid sensor is only 1/4 of the volume of the existing explosion-proof sensor, and the safety-added solid sensor can be widely applied to temperature measurement in various occasions requiring explosion-proof safety-added.
Claims (7)
1. An increased safety type entity sensor comprises a sensor temperature sensing assembly and a metal contact temperature measuring body, wherein the sensor temperature sensing assembly comprises a temperature sensing element and an armored cable, the metal contact temperature measuring body comprises a cavity, one end of the cavity is connected with a pipe body, and the temperature sensing element is placed in the pipe body; and the temperature sensing assembly of the sensor is fixed in the tube body by using a filling material, and the transition circuit board is subjected to bonding, sealing and curing treatment by using a bonding sealing material in the cavity.
2. The safety-added entity sensor according to claim 1, wherein the transition circuit board is a double-sided circuit board, the thickness of the transition circuit board is 2-2.5 mm, and the temperature resistance range is as follows: -40 to 180 ℃.
3. The safety-enhanced entity sensor of claim 1, wherein the aperture of the input end and the output end of the transition circuit board is Φ 1- Φ 1.5, and there is a spacing, the spacing range: the transverse distance is 18 mm-22 mm, and the longitudinal distance is 12 mm-15 mm.
4. The safety-added physical sensor according to claim 1, wherein two fixing positioning holes with a pitch of 10mm to 12mm are arranged in the center of the transition circuit board, and the diameter of the fixing positioning holes is Φ 1.5 to Φ 2.
5. The safety-enhanced entity sensor of claim 1, wherein the filler material is AL2O3The density is 3.5 to 3.9g/cm3。
6. The increased security physical sensor of claim 1, wherein the bonding encapsulant is a flame retardant epoxy having a density of 1.54 ± 0.02g/cm3。
7. The safety-enhanced physical sensor according to claim 1, wherein a ferrule type locking assembly is disposed outside the tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020394438.3U CN211824773U (en) | 2020-03-25 | 2020-03-25 | Safety-increasing type entity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020394438.3U CN211824773U (en) | 2020-03-25 | 2020-03-25 | Safety-increasing type entity sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211824773U true CN211824773U (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020394438.3U Active CN211824773U (en) | 2020-03-25 | 2020-03-25 | Safety-increasing type entity sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211824773U (en) |
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2020
- 2020-03-25 CN CN202020394438.3U patent/CN211824773U/en active Active
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