CN216116126U

CN216116126U - High temperature resistant humidity sensor

Info

Publication number: CN216116126U
Application number: CN202122755938.2U
Authority: CN
Inventors: 高正平
Original assignee: Beijing Kunlunzhongda Sensor Technology Co ltd
Current assignee: Beijing Kunlunzhongda Sensor Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-03-22
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses a high-temperature-resistant humidity sensor which comprises an explosion-proof shell, a protective sleeve, a sensor assembly and a transmitter, wherein the transmitter is arranged in the explosion-proof shell, one end of the protective sleeve is connected with the explosion-proof shell, the sensor assembly is arranged in the protective sleeve and is connected with the transmitter, and a high-temperature-resistant protective layer is arranged on the surface of the sensor assembly. The utility model belongs to the technical field of humidity sensors, and aims to solve the problem that a temperature and humidity sensor in the prior art cannot be suitable for humidity detection in an environment with the temperature of more than 200 ℃. The technical effects achieved are as follows: the anti-explosion shell can well protect the transmitter in the shell, has an anti-explosion function and is safe and reliable; the sensor component surface is equipped with high temperature resistant inoxidizing coating, and high temperature resistance can be better, can be applicable to the high temperature environment more than 200 ℃.

Description

High temperature resistant humidity sensor

Technical Field

The utility model relates to the technical field of humidity sensors, in particular to a high-temperature-resistant humidity sensor.

Background

Currently, most humidity sensors in the prior art are suitable for an environment of 0 ℃ to 50 ℃, the limit temperature of part of imported products can be used for humidity measurement in an environment of 200 ℃, but humidity measurement is also required in an environment higher than 200 ℃ under part of application conditions, for example: the humidity is measured in the high-temperature environment of more than 200 ℃ in the industries of drying, desulfurization and denitrification in steel mills, spinning, new energy and the like.

Therefore, a humidity sensor capable of detecting humidity in an environment of 200 ℃ or higher is demanded.

SUMMERY OF THE UTILITY MODEL

Therefore, the present invention provides a humidity sensor with high temperature resistance to solve the above problems in the prior art.

In order to achieve the above purpose, the utility model provides the following technical scheme:

according to the first aspect of the utility model, the high-temperature-resistant humidity sensor comprises an explosion-proof shell, a protective sleeve, a sensor assembly and a transmitter, wherein the transmitter is arranged in the explosion-proof shell, one end of the protective sleeve is connected with the explosion-proof shell, the sensor assembly is arranged in the protective sleeve, the sensor assembly is connected with the transmitter, and a high-temperature-resistant protective layer is arranged on the surface of the sensor assembly.

Further, the sensor assembly comprises a humidity sensing substrate and a humidity probe plate, the humidity sensing substrate is installed on the humidity probe plate, a high-temperature-resistant humidity sensing coating is arranged on the surface of the humidity sensing substrate, and a high-temperature-resistant coating is arranged on the surface of the humidity probe plate.

Furthermore, the explosion-proof shell comprises an upper shell and a lower shell, the upper shell is detachably connected with the lower shell, a sealing ring is arranged at the joint of the upper shell and the lower shell, the explosion-proof shell comprises an upper shell and a lower shell, the upper shell is detachably connected with the lower shell, and the sealing ring is arranged at the joint of the upper shell and the lower shell.

The protective sleeve further comprises a first connector and a connecting pipe, the first connector is arranged on the lower shell, one end of the connecting pipe is connected with the first connector, the other end of the connecting pipe is connected with one end of the protective sleeve, and a heat insulation plug is arranged at the joint of the connecting pipe and the first connector.

Further, still include the winding displacement pipe, the winding displacement pipe with casing integrated into one piece down, the both ends of winding displacement pipe are equipped with second connector and third connector respectively, be equipped with cable joint on the second connector, it is stifled to be equipped with the joint on the third connector.

Further, still include the insulating board, the insulating board sets up in the lower casing, the changer is installed on the insulating board.

Furthermore, the multifunctional shell also comprises a plurality of fixing lugs, wherein fixing holes are formed in the fixing lugs, and the fixing lugs are arranged on the lower shell.

Furthermore, the number of the fixing lugs is two, and the two fixing lugs are symmetrically arranged on two sides of the lower shell.

Further, the humidity probe plate comprises a support, wherein the support is arranged in the protective sleeve, and the humidity probe plate is arranged on the support.

Further, still include the ground terminal, the ground terminal sets up on the lateral wall of lower casing.

The utility model has the following advantages: the anti-explosion shell can well protect the transmitter in the shell, has an anti-explosion function and is safe and reliable; the sensor component surface is equipped with high temperature resistant inoxidizing coating, and high temperature resistance can be better, can be applicable to the high temperature environment more than 200 ℃.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

Fig. 1 is a bottom view of a humidity sensor with high temperature resistance according to some embodiments of the present invention.

Fig. 2 is a top view of a humidity sensor with high temperature resistance according to some embodiments of the present invention.

Fig. 3 is a front view of a humidity sensor with high temperature resistance according to some embodiments of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a right side view of a humidity sensor with high temperature resistance according to some embodiments of the present invention.

Fig. 6 is a cross-sectional view B-B of fig. 5.

In the figure: 1. the device comprises a lower shell, 2, a connecting pipe, 3, a protective sleeve, 4, a humidity sensing substrate, 5, a support, 6, a thread head, 7, a first connector, 8, a flat cable pipe, 9, a second connector, 10, a third connector, 11, a connector plug, 12, a cable connector, 13, a fixing lug, 14, a fixing hole, 15, an upper shell, 16, a sealing ring, 17, a transmitter, 18, an insulating plate, 19 and a humidity probe plate.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, in an embodiment of the first aspect of the present invention, a high temperature resistant humidity sensor includes an explosion-proof housing, a protective casing 3, a sensor assembly and a transmitter 17, where the transmitter 17 is disposed in the explosion-proof housing, one end of the protective casing 3 is connected to the explosion-proof housing, the sensor assembly is disposed in the protective casing 3, the sensor assembly is connected to the transmitter 17, and a high temperature resistant protective layer is disposed on a surface of the sensor assembly.

In the above embodiment, it should be noted that the sensor assembly includes the humidity sensing substrate 4 and the humidity probe board 19, the humidity sensing substrate 4 is mounted on the humidity probe board 19, the surface of the humidity sensing substrate 4 is provided with the high temperature resistant humidity sensing coating, and the surface of the humidity probe board 19 is provided with the high temperature resistant coating.

Further, the high temperature and humidity resistant coating on the surface of the humidity sensing substrate 4 is processed in a manner that a high temperature and humidity resistant type humidity sensing liquid is coated on the humidity sensing substrate 4, then a high temperature and humidity resistant film is formed after long-term high temperature and humidity aging, when humidity is measured, the high temperature and humidity resistant film contacts and adsorbs water vapor in the environment, so that the resistance value of the humidity sensing substrate 4 changes, and then the transmitter 17 is used for detection and conversion to obtain the humidity value in the environment; the high temperature resistant coating on the surface of the humidity probe plate 19 is made of high temperature resistant epoxy resin glue, and the joint of the protective casing 3 and the explosion-proof casing is sealed through the high temperature resistant epoxy resin glue.

The technical effects achieved by the above embodiment are as follows: the anti-explosion shell can well protect the transmitter in the shell, has an anti-explosion function and is safe and reliable; the surface of the sensor component is provided with the high-temperature-resistant protective layer, so that the sensor component has better high-temperature resistance and can be suitable for a high-temperature environment with the temperature of more than 200 ℃; the high-temperature-resistant coating on the surface of the humidity probe plate 19 is made of high-temperature-resistant epoxy resin glue, so that the high-temperature resistance and the steam corrosion resistance of the humidity probe plate 19 are improved, and the overall high-temperature resistance and corrosion resistance of the sensor are improved.

Alternatively, as shown in fig. 1 to 6, in some embodiments, the explosion-proof housing comprises an upper housing 15 and a lower housing 1, the upper housing 15 is detachably connected with the lower housing 1, and a sealing ring 16 is arranged at the joint of the upper housing 15 and the lower housing 1.

In the above alternative embodiment, it should be noted that the upper casing 15 and the lower casing 1 are connected by screw threads, and the sealing ring 16 is made of a high temperature resistant and corrosion resistant material.

The beneficial effects of the above alternative embodiment are: the explosion-proof shell comprises an upper shell 15 and a lower shell 1, the upper shell 15 and the lower shell 1 are detachably connected together, and the disassembly and the assembly are convenient and quick; and a sealing ring 16 is arranged at the joint of the upper shell 15 and the lower shell 1, so that the sealing performance of the explosion-proof shell can be guaranteed.

Optionally, as shown in fig. 1 to 6, in some embodiments, the protective cover further includes a first connector 7 and a connecting pipe 2, the first connector 7 is disposed on the lower housing 1, one end of the connecting pipe 2 is connected to the first connector 7, the other end of the connecting pipe 2 is connected to one end of the protective cover 3, and a thermal insulation plug is disposed at a connection position of the connecting pipe 2 and the first connector 7.

In the above optional embodiment, it should be noted that one end of the connection pipe 2 away from the protection casing 3 is provided with the screw head 6, the connection pipe 2 is in threaded connection with the first connection head 7 through the screw head 6, a sealing ring is arranged at a connection position of the screw head 6 and the first connection head 7, and the inside of the screw head 7 is sealed through high temperature resistant epoxy resin glue.

The beneficial effects of the above alternative embodiment are: through setting up first connector 7 and connecting pipe 2, can be convenient and fast ground with protecting casing 3 and lower casing 1 be connected.

Optionally, as shown in fig. 1 to 6, in some embodiments, the cable connector further includes a cable arranging pipe 8, the cable arranging pipe 8 and the lower housing 1 are integrally formed, a second connector 9 and a third connector 10 are respectively disposed at two ends of the cable arranging pipe 8, a cable connector 12 is disposed on the second connector 9, and a connector plug 11 is disposed on the third connector 10.

In the above alternative embodiment, it should be noted that, during the use process, the second connector 9 can be used to access the data line to connect with the transmitter 17, and output the detected humidity data, and the third connector 10 is a spare connector.

The beneficial effects of the above alternative embodiment are: through setting up the winding displacement pipe 8, the both ends of winding displacement pipe 8 are equipped with second connector 9 and third connector 10 respectively, can connect the data line conveniently to the humidity data output that will detect.

Optionally, as shown in fig. 1 to 6, in some embodiments, an insulating plate 18 is further included, the insulating plate 18 is disposed in the lower housing 1, and the transmitter 17 is mounted on the insulating plate 18.

In the above alternative embodiment, it should be noted that the insulating plate 18 is mounted at the bottom of the cavity inside the lower casing 1.

The beneficial effects of the above alternative embodiment are: insulation board 18 is provided in lower case 1, and transmitter 17 is mounted on insulation board 18, and by providing insulation board 18, transmitter 17 can be prevented from short-circuiting.

Optionally, as shown in fig. 1 to 6, in some embodiments, a plurality of fixing lugs 13 are further included, fixing holes 14 are provided on the fixing lugs 13, and the fixing lugs 13 are provided on the lower housing 1.

In the above alternative embodiment, it should be noted that the fixing lug 13 is connected with the lower shell 1 by welding.

Further, the number of the fixing lugs 13 is two, and the two fixing lugs 13 are symmetrically arranged on two sides of the lower shell 1.

The beneficial effects of the above alternative embodiment are: through setting up fixed ear 13, can install fixed sensor conveniently.

Optionally, as shown in fig. 1 to 6, in some embodiments, the humidity probe board further comprises a bracket 5, the bracket 5 is disposed in the protective casing 3, and the humidity probe board 19 is mounted on the bracket 5.

In the above alternative embodiment, it should be noted that the frame 5 is detachably mounted in the protective casing 3, and the humidity probe board 19 is mounted on the frame 5 by screws.

The beneficial effects of the above alternative embodiment are: by providing the bracket 5, the humidity probe plate 19 can be conveniently and quickly installed.

Optionally, as shown in fig. 1 to 6, in some embodiments, a ground terminal is further included, and the ground terminal is disposed on an outer sidewall of the lower housing 1.

The beneficial effects of the above alternative embodiment are: through setting up the earthing terminal, can conveniently carry out ground connection with the sensor to reduce magnetic field interference.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.

Claims

1. The utility model provides a high temperature resistant humidity transducer, its characterized in that, includes explosion-proof casing, protective casing (3), sensor module and changer (17), changer (17) set up in the explosion-proof casing, the one end of protective casing (3) with explosion-proof casing is connected, sensor module sets up in protective casing (3), sensor module with changer (17) are connected, the sensor module surface is equipped with high temperature resistant inoxidizing coating.

2. The high-temperature-resistant humidity sensor according to claim 1, wherein the sensor assembly comprises a humidity sensing substrate (4) and a humidity probe plate (19), the humidity sensing substrate (4) is mounted on the humidity probe plate (19), a high-temperature-resistant humidity sensing coating is arranged on the surface of the humidity sensing substrate (4), and a high-temperature-resistant coating is arranged on the surface of the humidity probe plate (19).

3. The humidity sensor according to claim 2, wherein the explosion-proof housing comprises an upper housing (15) and a lower housing (1), the upper housing (15) is detachably connected to the lower housing (1), and a sealing ring (16) is disposed at the joint of the upper housing (15) and the lower housing (1).

4. The humidity sensor according to claim 3, further comprising a first connector (7) and a connecting tube (2), wherein the first connector (7) is disposed on the lower housing (1), one end of the connecting tube (2) is connected to the first connector (7), the other end of the connecting tube (2) is connected to one end of the protective tube (3), and a thermal insulation plug is disposed at a connection point of the connecting tube (2) and the first connector (7).

5. The high-temperature-resistant humidity sensor according to claim 4, further comprising a wire arranging pipe (8), wherein the wire arranging pipe (8) and the lower housing (1) are integrally formed, a second connector (9) and a third connector (10) are respectively arranged at two ends of the wire arranging pipe (8), a cable connector (12) is arranged on the second connector (9), and a connector plug (11) is arranged on the third connector (10).

6. A humidity sensor according to claim 3, characterized in that it further comprises an insulating plate (18), said insulating plate (18) being arranged inside said lower shell (1), said transmitter (17) being mounted on said insulating plate (18).

7. The humidity sensor according to claim 3, further comprising a plurality of fixing lugs (13), wherein the fixing lugs (13) are provided with fixing holes (14), and the fixing lugs (13) are disposed on the lower housing (1).

8. The humidity sensor according to claim 7, wherein the number of the fixing lugs (13) is two, and the two fixing lugs (13) are symmetrically arranged on two sides of the lower shell (1).

9. A humidity sensor according to claim 2, further comprising a frame (5), said frame (5) being arranged inside said protective casing (3), said humidity probe plate (19) being mounted on said frame (5).

10. The humidity sensor according to claim 3, further comprising a ground terminal disposed on an outer sidewall of the lower housing (1).