CN219369637U - Improved high-temperature-resistant corrosion-resistant capacitive humidity sensor - Google Patents

Abstract

The utility model discloses an improved high-temperature-resistant and corrosion-resistant capacitive humidity sensor, which comprises a base, wherein the top of an upper electrode is fixedly connected with a solid polymer humidity-sensitive film, two ends of the bottom of the base are fixedly connected with pin replacement mechanisms, the bottoms of the two pin replacement mechanisms are respectively connected with an anode pin and a cathode pin in a threaded manner, each pin replacement mechanism comprises a connecting pin, a large slot is formed in the bottom of each connecting pin, a large lug is clamped in an inner cavity of each large slot, one end of each large lug is respectively and fixedly connected with the end part of each anode pin and the end part of each cathode pin, locking threads are formed in the bottoms of the connecting pins, the tops of the anode pins and the tops of the cathode pins, and the surface threads of the locking threads are connected with thread sleeves.

Description

Improved high-temperature-resistant corrosion-resistant capacitive humidity sensor

Technical Field

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

Background

The capacitance type humidity sensitive element is based on a parallel plate capacitor principle, the dielectric constant of sensitive materials is influenced by the concentration of water molecules in air, so that the capacitance value of the element changes along with the change of relative humidity, most capacitance type humidity sensitive elements are relatively poor in corrosion resistance, the requirement on the cleanliness of the environment is relatively high in the long-term use process, the common capacitance type humidity sensor is slowly discharged after condensation, the function of rapidly discharging the condensation and dehumidifying is not achieved, and secondly, under the high humidity environment, water vapor is easily condensed to form a film, through grooves in a shell are blocked, the accuracy of the sensor is influenced, in addition, pins of the sensor are easily broken and damaged in the use process, the whole sensor is required to be replaced after the damage, and the pins cannot be replaced.

Disclosure of Invention

The utility model aims to provide an improved high-temperature-resistant corrosion-resistant capacitive humidity sensor so as to solve the problems that the common capacitive humidity sensor provided in the background art is slow in internal condensation and not provided with a function of rapidly discharging the condensation and dehumidifying, and in addition, under a high-humidity environment, water vapor is easy to condense and form a film, a through groove in a shell is blocked, the accuracy of the sensor is affected, in addition, pins of the sensor are easy to break and damage in the use process, the whole sensor is required to be replaced after the pins are damaged, and the pins cannot be replaced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an improved generation high temperature resistant, corrosion-resistant electric capacity type humidity transducer, includes the base, the top fixedly connected with upper electrode of base, the top fixedly connected with solid-state polymer humidity-sensitive membrane of upper electrode, the top fixedly connected with bottom electrode of solid-state polymer humidity-sensitive membrane, the equal fixedly connected with pin change mechanism in both ends of base bottom, two the bottom of pin change mechanism is threaded connection has anodal pin and negative pole pin respectively, pin change mechanism includes the connecting leg, big slot has been seted up to the bottom of connecting leg, big slot's inner chamber joint has big lug, two the one end of big lug respectively with the tip fixed connection of anodal pin and negative pole pin, locking screw thread has all been seted up at the bottom of connecting leg, the top of anodal pin and the top of negative pole pin, locking screw thread's surface threaded connection has the thread bush.

Preferably, the surface at base top has cup jointed the cover shell, a plurality of logical grooves have been seted up to the surface equidistance at cover shell top, the top bonding of logical inslot chamber has the paster, and logical groove is used for the entering of outside air, and the paster is used for plastic fibrous connection.

Preferably, a plurality of water outlet grooves which are distributed in an annular mode are formed in the side of the top end of the base at equal intervals, a plurality of dew discharging grooves corresponding to the water outlet grooves are formed in the bottom of the surface of the casing at equal intervals, dew flows outwards along the water outlet grooves, the water outlet grooves are communicated with the dew discharging grooves, and then the dew can be discharged to the outside of the casing through the dew discharging grooves.

Preferably, the bottom of the surface of the base is coated with a wrapping edge, and the base, the shell and the wrapping edge are all made of alloy tungsten materials, so that the corrosion resistance and the high temperature resistance of the sensor are improved.

Preferably, the top end of the inner cavity of the large slot is fixedly connected with a small lug, the small slot is formed in the top end of the large lug, and the small lug is connected with the small slot in a clamping mode.

Preferably, the shape of paster and the shape phase-match of logical groove, just one side equidistance fixedly connected with a plurality of plastic fibers of paster, fine plastic fiber can intercept the water molecules that floats and make it condense to expose and hang on plastic fiber, prevents that it from hanging on the top of logical inslot portion.

Compared with the prior art, the utility model has the beneficial effects that:

(1) When the positive pin or the negative pin is damaged and broken, the connection between the threaded sleeve and the locking thread is released by rotating the threaded sleeve anticlockwise, at the moment, the pin is outwards stirred, the small lug can be removed from the inner cavity of the small slot, the large lug is removed from the inner cavity of the large slot, a new positive pin or negative pin is inserted into the inner cavity of the large slot, and the threaded sleeve is rotated in the opposite direction, so that the threaded sleeve is connected with the locking thread again, and the replacement can be completed, and the device is simple and convenient;

(2) When the humidity is high, water vapor at the top of the base is condensed, the condensed liquid flows outwards along the water outlet groove, the water outlet groove is communicated with the condensed liquid discharging groove, and the condensed liquid can be discharged to the outside of the casing through the condensed liquid discharging groove, so that the function of facilitating rapid dehumidification of condensed liquid discharge is realized; when humidity in the air is great, fine plastic fiber can intercept the water molecules that floats and make it condense to dew and hang on plastic fiber, prevents that it from hanging on the top of leading to the inslot portion, has realized preventing the function of drop of water shutoff notch.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of a pin changing mechanism of the present utility model;

FIG. 3 is a cross-sectional view of a base of the present utility model;

fig. 4 is a top view of the patch of the present utility model.

In the figure: 1. a base; 2. an upper electrode; 3. a solid polymeric moisture sensitive film; 4. a lower electrode; 5. a pin replacement mechanism; 6. a positive electrode pin; 7. a negative electrode pin; 8. a casing; 9. a through groove; 10. a patch; 11. a plastic fiber; 12. a water outlet tank; 13. a drain groove; 14. wrapping edges; 15. a connecting pin; 16. a large slot; 17. a large bump; 18. a small bump; 19. a small slot; 20. a thread sleeve; 21. locking the screw thread.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model provides an improved high temperature and corrosion resistant capacitance type humidity sensor, which comprises a base 1, wherein an upper electrode 2 is fixedly connected to the top of the base 1, a solid polymer humidity sensitive membrane 3 is fixedly connected to the top of the upper electrode 2, a lower electrode 4 is fixedly connected to the top of the solid polymer humidity sensitive membrane 3, two ends of the bottom of the base 1 are fixedly connected with a pin changing mechanism 5, the bottoms of the two pin changing mechanisms 5 are respectively connected with an anode pin 6 and a cathode pin 7 in a threaded manner, the pin changing mechanism 5 comprises a connecting pin 15, a large slot 16 is formed in the bottom of the connecting pin 15, a large lug 17 is clamped in an inner cavity of the large slot 16, one end of the two large lugs 17 is fixedly connected with the end of the anode pin 6 and the end of the cathode pin 7 respectively, a locking thread 21 is formed in the top of the connecting pin 15, a thread bush 20 is connected to the top of the anode pin 6 and the top of the cathode pin 7, when the anode pin 6 or the cathode pin 7 is broken, the thread bush 20 is rotated anticlockwise, the thread bush 20 is rotated, the thread bush 20 is enabled to rotate, the upper pin 20 is enabled to be connected with the anode pin 6 and the cathode pin 21 is enabled to be removed from the large slot 16, the inner cavity 20 is enabled to be removed from the large slot 16, and the inner cavity is enabled to be replaced from the large lug 16, and the large lug is enabled to be convenient to be connected with the large lug 16, and the large lug 16 is replaced to be replaced with the large lug thread pin and the large lug thread is easy, and the inner cavity is easy.

Referring to fig. 4, further, the surface at the top of the base 1 is sleeved with the casing 8, the surface equidistance at the top of the casing 8 is provided with a plurality of through grooves 9, the top end of the inner cavity of each through groove 9 is adhered with a patch 10, the shape of each patch 10 is matched with that of each through groove 9, one side of each patch 10 is fixedly connected with a plurality of plastic fibers 11 at equal intervals, when the humidity in the air is large, the fine plastic fibers 11 can intercept floating water molecules to enable the floating water molecules to be condensed and suspended on the plastic fibers 11, when dew reaches a certain size, the dew can automatically fall down to prevent the dew from suspending at the top end inside each through groove 9, the communication function of each through groove 9 is affected, data misalignment is caused, and the function of preventing the water drops from blocking the notch is realized.

Referring to fig. 1 and 3, further, a plurality of water outlet grooves 12 distributed in a ring shape are equidistantly formed on the side of the top end of the base 1, a plurality of water drain grooves 13 corresponding to the water outlet grooves 12 are equidistantly formed on the bottom of the surface of the casing 8, when the humidity is high, water vapor at the top of the base 1 is condensed, the condensed water flows outwards along the water outlet grooves 12, the water outlet grooves 12 are communicated with the water drain grooves 13, and the condensed water can be discharged to the outside of the casing 8 through the water drain grooves 13, so that the sensitivity of an image sensor is prevented from being accumulated in the casing 8, and the function of facilitating rapid dehumidification of condensed water discharge is realized.

Referring to fig. 4, further, the bottom of the surface of the base 1 is coated with the binding 14, and the base 1, the casing 8 and the binding 14 are made of alloy tungsten material, so that the sensor is more resistant to high temperature and corrosion by making the base 1, the casing 8 and the binding 14 of alloy tungsten material.

Referring to fig. 2, further, a small bump 18 is fixedly connected to the top end of the inner cavity of the large slot 16, a small slot 19 is provided at the top end of the large bump 17, the small bump 18 is connected with the small slot 19 in a clamping manner, and the connection between the large slot 16 and the large bump 17 is reinforced in a clamping manner by the small bump 18 and the small slot 19.

When the humidity sensor is particularly used, a solid polymer humidity-sensitive film 3 is arranged between an upper electrode 2 and a lower electrode 4 to form a humidity-sensitive capacitor, when the ambient humidity changes, the dielectric constant of the humidity-sensitive capacitor changes, so that the capacitance change amount of the humidity-sensitive capacitor also changes, the capacitance change amount of the humidity-sensitive capacitor is in direct proportion to the relative humidity, when the humidity is higher, water vapor at the top of a base 1 is condensed, the condensed water flows outwards along a water outlet groove 12, the water outlet groove 12 is communicated with a water outlet groove 13, the condensed water can be discharged to the outside of a casing 8 through the water outlet groove 13, the sensitivity of an image sensor is prevented from being accumulated in the casing 8, and the function of facilitating the rapid dehumidification of the condensed water discharged is realized; when the humidity in the air is high, the fine plastic fiber 11 can intercept floating water molecules to enable the floating water molecules to be condensed into dew to be hung on the plastic fiber 11, and the dew can automatically fall down after reaching a certain size, so that the dew is prevented from hanging at the top end inside the through groove 9, the communication function of the through groove 9 is influenced, data misalignment is caused, and the function of preventing the water drops from blocking the notch is realized; when the positive pin 6 or the negative pin 7 is damaged and broken, the threaded sleeve 20 is rotated anticlockwise, so that the threaded sleeve 20 is rotated and simultaneously moved upwards, at the moment, the connection between the threaded sleeve 20 and the locking threads 21 on the pins is released, at the moment, the pins are moved outwards again, the small convex blocks 18 can be moved out of the inner cavities of the small slots 19, the large convex blocks 17 are moved out of the inner cavities of the large slots 16, at the moment, the new positive pin 6 or the new negative pin 7 is inserted into the inner cavities of the large slots 16 again, and the threaded sleeve 20 is rotated in the opposite direction, so that the threaded sleeve 20 is reconnected with the locking threads 21 on the pins, and the replacement can be completed, so that the device is simple and convenient.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. Improved generation high temperature resistant, corrosion-resistant capacitive humidity transducer, including base (1), its characterized in that: the utility model discloses a high-voltage power supply device, including base (1), base, socket, locking screw (21), big slot (16) have been seted up to the bottom of connecting pin (15), big lug (17) have been offered to the inner chamber joint of big slot (16), two the tip fixed connection of big lug (17) with tip and the tip fixed connection of negative pole pin (7) of positive pole pin (6) respectively, locking screw (21) have all been seted up at the bottom of connecting pin (15), the top of positive pole pin (6) and the top of negative pole pin (7) to the bottom of pin change mechanism (5) respectively, big slot (16) have been seted up to the bottom of connecting pin (15), the tip fixed connection of big lug (17) with positive pole pin (6) tip and negative pole pin (7) respectively.

2. The improved high temperature and corrosion resistant capacitive humidity sensor of claim 1 wherein: the surface at base (1) top has cup jointed cover shell (8), a plurality of logical groove (9) have been seted up to the surface equidistance at cover shell (8) top, the top of logical groove (9) inner chamber has adhered paster (10).

3. The improved high temperature and corrosion resistant capacitive humidity sensor of claim 2 wherein: a plurality of water outlet grooves (12) which are distributed in an annular mode are formed in the side of the top end of the base (1) at equal intervals, and a plurality of dew discharging grooves (13) corresponding to the water outlet grooves (12) are formed in the bottom of the surface of the casing (8) at equal intervals.

4. The improved high temperature and corrosion resistant capacitive humidity sensor of claim 1 wherein: the bottom of the surface of the base (1) is coated with a binding (14), and the base (1), the shell (8) and the binding (14) are all made of alloy tungsten materials.

5. The improved high temperature and corrosion resistant capacitive humidity sensor of claim 1 wherein: the top end of the inner cavity of the large slot (16) is fixedly connected with a small lug (18), the top end of the large lug (17) is provided with a small slot (19), and the small lug (18) is clamped with the small slot (19).

6. The improved high temperature and corrosion resistant capacitive humidity sensor of claim 2 wherein: the shape of the patch (10) is matched with the shape of the through groove (9), and a plurality of plastic fibers (11) are fixedly connected to one side of the patch (10) at equal intervals.