CN114034402A - Water inlet warning sensor and processing technology thereof - Google Patents
Water inlet warning sensor and processing technology thereof Download PDFInfo
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- CN114034402A CN114034402A CN202111243716.0A CN202111243716A CN114034402A CN 114034402 A CN114034402 A CN 114034402A CN 202111243716 A CN202111243716 A CN 202111243716A CN 114034402 A CN114034402 A CN 114034402A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000005516 engineering process Methods 0.000 title abstract description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 37
- 238000007654 immersion Methods 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 33
- 238000002791 soaking Methods 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000741 silica gel Substances 0.000 claims description 16
- 229910002027 silica gel Inorganic materials 0.000 claims description 16
- 239000000565 sealant Substances 0.000 claims description 12
- 238000001746 injection moulding Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000002991 molded plastic Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 2
- 239000011229 interlayer Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000002349 favourable effect Effects 0.000 description 12
- 238000002845 discoloration Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention discloses a water inlet warning sensor and a processing technology thereof, wherein the water inlet warning sensor comprises a connecting wire, a temperature sensing element and a protective shell, wherein the temperature sensing element and the protective shell are both connected to the water immersion end of the connecting wire, the temperature sensing element is positioned in a closed cavity of the protective shell, and a heat conducting medium is filled in the protective shell; a humidity-sensitive color-changing layer is arranged in the cavity of the protective shell, and the outer wall of the protective shell is transparent. The invention has the effect of facilitating detection personnel to timely acquire the water inlet information of the temperature sensor.
Description
Technical Field
The invention relates to the technical field of water temperature detection equipment, in particular to a water inlet warning sensor and a processing technology thereof.
Background
The water temperature sensor belongs to a sensor part for measuring water temperature, and mainly comprises a connector, a connecting wire and a thermistor, wherein the thermistor is used as a temperature sensing element for measuring the water temperature, the resistance of the thermistor changes along with the temperature change, the connector is used for connecting detection equipment, and the current of the connecting wire changes into an analog quantity signal for providing the temperature change for the detection equipment, so that the water temperature of an object to be measured is obtained.
In the related art, in order to reduce direct contact between the water body and the thermistor, a protective shell used for wrapping the thermistor is formed at the end of the connecting wire in an injection molding mode generally, and when the water temperature of the water body is detected, one end with the protective shell is directly immersed into the water body, so that the detection accuracy is improved.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the phenomenon that water permeates into the protective shell can still appear after the water temperature sensor is soaked for a long time, if the water temperature sensor is not taken out of the water body in time, the problem of short circuit of a circuit can be caused, the temperature sensor is damaged, and therefore, the improvement space is still provided.
Disclosure of Invention
The invention provides a water inlet warning sensor and a processing technology thereof, which are used for facilitating detection personnel to timely acquire water inlet information of a temperature sensor.
The invention provides a water inlet warning sensor and a processing technology thereof, which adopt the following technical scheme:
a water inlet warning sensor comprises a connecting wire, a temperature sensing element and a protective shell, wherein the temperature sensing element and the protective shell are both connected to the water immersion end of the connecting wire, the temperature sensing element is located in a closed cavity of the protective shell, and a heat conducting medium is filled in the protective shell; a humidity-sensitive color-changing layer is arranged in the cavity of the protective shell, and the outer wall of the protective shell is transparent.
Through adopting above-mentioned technical scheme, the protecting crust plays the effect of cutting off the water and reducing temperature-sensing element direct contact probability, reduce temperature-sensing element's damage probability, heat-conducting medium plays the effect of transmission heat energy in the protecting crust, be favorable to improving the problem that heat transfer efficiency is low, in addition, through setting up the wet discoloration layer of sense in the protecting crust, when the water infiltration protecting crust, the wet discoloration layer of sense meets water color development, and the outer wall of protecting crust is the transparence, be convenient for warn the measurement personnel in time learn the information that temperature sensor intake, and in time take out the sensor, reduce the probability that the sensor damaged.
Preferably, the protective housing includes transparent shell, the end that soaks of connecting wire inserts in the transparent shell, the end that soaks of connecting wire has moulded plastics terminal line tail, terminal line tail with transparent shell butt fusion.
Through adopting above-mentioned technical scheme for transparent housing and terminal line tail form the first line defense line of protecting crust jointly, thereby arrange temperature-sensing element in the cavity that seals completely, are favorable to improving into water warning sensor's water-proof effects.
Preferably, the protective shell further comprises an inner shell, the inner shell is sleeved on the outer peripheral surface of the soaking end of the connecting wire, and the temperature sensing element is located in the inner shell; the humidity-sensitive color-changing layer is positioned in an interlayer formed by the inner shell and the transparent outer shell.
Through adopting above-mentioned technical scheme to at the inside second line of preventing that forms of transparent shell, further improved the water-proof effects of warning sensor that intakes, will feel wet discoloration layer and set up in transparent shell and the intermediate layer between them, make the water that infiltrates into transparent shell contact with the wet discoloration layer of feeling earlier, the inner shell is as the second line of preventing, for the operating extension time of knowing the change transparent shell behind the information of intaking for detection personnel, be favorable to improving the life of warning sensor that intakes.
Preferably, the outer wall of the inner shell is recessed inwards and compresses the connecting wires.
Through adopting above-mentioned technical scheme, improved the connection steadiness of inner shell and connecting wire, when reaching both drawing force requirements, also improved compactness between them, be favorable to improving the water-proof effects of protecting crust.
Preferably, the protective housing still includes the sleeve pipe, the cover pipe box is located the end of soaking of connecting wire and is arranged in the inner shell, heat-conducting medium includes heat conduction silica gel, heat conduction silica gel is filled in the cover pipe and is wrapped up temperature sensing element.
Through adopting above-mentioned technical scheme, the sleeve pipe forms the third line of defence with heat conduction silica gel jointly, is favorable to further improving the water-proof effects of protecting crust under the condition that does not influence normal heat transfer.
Preferably, the heat conducting medium further comprises a pouring sealant, and the pouring sealant is filled in the inner shell and wraps the sleeve.
By adopting the technical scheme, the pouring sealant plays a role in sealing and bonding, and is favorable for improving the connectivity between the inner shell and the sleeve.
Preferably, the moisture-sensitive color-changing layer is color-changing paper.
Through adopting above-mentioned technical scheme, based on the water characteristics that discolours of colour-changing paper, be favorable to in time feeding back protective housing information of intaking to play the warning effect.
Preferably, the immersion end of the connecting wire is provided with a suction cup.
Through adopting above-mentioned technical scheme, when detecting water temperature, the sucking disc is adsorbable to be fixed at water container inner wall, and the steadiness when being favorable to improving the detection water temperature of intake sensor improves the water and flows the condition that leads to the sensor to flutter everywhere.
Preferably, the moisture-sensitive discoloring layer is a water-absorbing sponge with anhydrous copper sulfate attached to the outer side.
Through adopting above-mentioned technical scheme, when the water infiltration transparent outer shell in, the sponge that absorbs water adsorbs the water, can delay the time that the water got into the inner shell, is favorable to improving the inside water-proof effects of protecting crust, and the water can spread rapidly in the sponge that absorbs water in addition for the regional periphery that covers the inner shell that discolours of sense moisture discoloration layer is favorable to making its warning effect more showing.
A processing technology of a water inlet warning sensor comprises the following steps:
s1: and (3) mounting a temperature sensing element: fixedly connecting the temperature sensing element to the immersion end of the connecting wire;
s2: and (3) installing an inner waterproof structure: sleeving a sleeve at the soaking end of the connecting wire to enable the temperature sensing element to be arranged in the sleeve, and then filling heat-conducting silica gel into the sleeve to enable the heat-conducting silica gel to completely cover the temperature sensing element;
s3: installation of an inner-layer waterproof structure: pouring a pouring sealant into the inner shell, inserting the immersion end of the connecting wire into the inner shell to enable the sleeve to be placed in the inner shell, then pressing the inner shell and the connecting wire tightly, and finally drying;
s4: installation of an outer-layer waterproof structure: the temperature-sensitive color-changing layer covers the outer peripheral surface of the inner shell, then the transparent outer shell is formed by injection molding at the soaking end of the connecting wire, finally the tail end is formed by injection molding at the soaking end of the connecting wire, the tail end is fixed with the transparent outer shell in a welded mode, and the inner shell and the color-changing paper are placed in a cavity which is completely sealed by the transparent outer shell.
By adopting the technical scheme, the waterproof structure is sequentially installed from inside to outside, the heat transfer medium is conveniently filled step by step, the coating compactness of the heat transfer medium is improved while the sealing and bonding effect of the heat transfer medium is achieved, and the influence of a multilayer waterproof structure on heat transfer is favorably reduced.
Drawings
Fig. 1 is a schematic overall structure diagram of a water inlet warning sensor according to an embodiment of the present application.
Fig. 2 is an exploded view of a protective shell in a water inlet warning sensor according to an embodiment of the present application.
Fig. 3 is a cross-sectional view of a protective shell in a water inlet warning sensor according to an embodiment of the present application.
Description of reference numerals: 1. a connecting wire; 11. an XH connector; 12. a suction cup; 13. a terminal wire tail; 14. a head end and a tail end; 2. a glass-sealed thermistor; 3. a protective shell; 31. a sleeve; 32. an inner shell; 33. a transparent housing; 4. a wetness sensitive color change layer; 5. heat conducting silica gel; 6. and (5) pouring a sealant.
Detailed Description
The present invention is described in further detail below with reference to figures 1-3.
The embodiment of the invention discloses a water inlet warning sensor and a processing technology thereof. Referring to fig. 1 and 2, a water inlet warning sensor includes a connection line 1, a temperature sensing element, and a protective case 3. One end of the connecting wire 1 is connected with an XH connector 11, and the other end of the connecting wire 1 is connected with the temperature sensing element. Specifically, one end of the connecting wire 1 connected to the XH connector 11 is a connecting end of the connecting wire 1, and one end connected to the temperature sensing element is a soaking end of the connecting wire 1. Protecting crust 3 establishes the soaking end at connecting wire 1 and seals fixedly with connecting wire 1 as waterproof piece cover, and temperature sensing element arranges in protecting crust 3, and the intussuseption of protecting crust 3 is filled with heat-conducting medium, and after soaking end with connecting wire 1 and immerged the water, water temperature accessible protecting crust 3 and heat-conducting medium transmit to temperature sensing element. In addition, the soaking end of the connecting wire 1 is fixed with the sucker 12, and the sucker 12 can be fixed on the inner wall of the water body container in an adsorption mode, so that the stability of the water inlet sensor in detecting the water body temperature is improved.
In this embodiment, the temperature sensing element is specifically a glass-sealed thermistor 2, the glass-sealed thermistor 2 is welded and fixed with a wire core inside the connecting wire 1, the outer layer of the connecting wire 1 is a flexible PVC pipe, and a head end wire tail 14 is injection-molded at the connecting end of the connecting wire 1. In order to improve the waterproof performance of warning sensor intakes, establish into the protecting crust 3 the three-layer to form multilayer waterproof construction at the soaking end of connecting wire 1.
Referring to fig. 2 and 3, in particular, the protective shell 3 includes a sleeve 31, an inner shell 32, and a transparent outer shell 33. In the innermost layer structure of the protective shell 3, the sleeve 31 is sleeved at the soaking end of the connecting wire 1, the glass-sealed thermistor 2 is positioned in the sleeve 31, the heat-conducting medium comprises heat-conducting silica gel 5 filled in the sleeve 31, and the heat-conducting silica gel 5 wraps the periphery of the glass-sealed thermistor 2 and plays a role in sealing and bonding the glass-sealed thermistor 2.
In the inner layer structure of the protective shell 3, the inner shell 32 is cylindrical, and one end of the inner shell 32 is open and the other end is closed. The heat conducting medium further includes a potting adhesive 6 filled in the inner casing 32. When the inner shell 32 is installed, the water immersion end of the connecting wire 1 is inserted into the inner shell 32, the sleeve 31 and the glass-sealed thermistor 2 are completely arranged in the inner shell 32, and the pouring sealant 6 plays a role in sealing and bonding. In addition, the inner shell 32 is made of stainless steel, in order to further improve the connection stability of the connecting line 1 and the inner shell 32 and meet the requirements of the drawing force of the connecting line and the inner shell, two annular grooves are inwards recessed at the connection part between the inner shell 32 and the connecting line 1, so that the inner shell 32 and the PVC pipe are pressed tightly, and meanwhile, the waterproof effect of the inner layer of the protective shell 3 is further improved.
In the outmost structure of protecting crust 3, transparent shell 33 forms through moulding plastics, and transparent shell 33 is arranged in completely to inner shell 32, and in addition, has moulded plastics terminal line tail 13 at the end of soaking of connecting wire 1, and terminal line tail 13 and transparent shell 33 integrated into one piece, terminal line tail 13 and transparent shell 33 form the outmost waterproof construction of protecting crust 3 jointly, are favorable to improving into water warning sensor's waterproof performance.
Because protective housing 3 soaks in the water for a long time, still there is the risk that the water oozes in, in order to facilitate the detection personnel in time to learn the water and has permeated transparent outer shell 33, inner shell 32 outer peripheral face covers and has felt wet discoloration layer 4, in this embodiment, it specifically is the color-changing paper to feel wet discoloration layer 4, the color-changing paper glues in inner shell 32 outer peripheral face, when pasting the color-changing paper, the color-changing paper covers the connection gap between inner shell 32 and connecting wire 1, when making the water ooze, must contact with the color-changing paper earlier, the characteristic based on the color-changing paper meets water color development, thereby play the warning effect, and remind the information that the detection personnel sensor intake in time, be favorable to reducing the probability that the sensor damaged.
In other embodiments, the wet color-changing layer 4 can be the wet ink of feeling of smearing on the outer peripheral face of the inner shell 32, in addition, the wet color-changing layer 4 also can be the outer sponge that absorbs water that covers anhydrous copper sulfate, based on the water absorption characteristic of the sponge that absorbs water, when the water infiltrates in the transparent outer shell 33, the sponge that absorbs water adsorbs the water, the water-proof effects has been played, and the water can diffuse rapidly in the sponge that absorbs water, make the regional cover inner shell 32 periphery that discolours of the wet color-changing layer 4 of feeling, and then make its warning effect more showing.
A processing technology of a water inlet warning sensor comprises the following steps:
s1: and (3) mounting a temperature sensing element: and an operator fixes the glass seal resistor on the wire core at the immersion end of the connecting wire 1 in a welding manner.
S2: and (3) installing an inner waterproof structure: firstly, the sleeve 31 is sleeved at the soaking end of the connecting wire 1, the glass sealing resistor is arranged in the sleeve 31, and then the sleeve 31 is filled with the heat-conducting silica gel 5, so that the heat-conducting silica gel 5 completely covers the glass sealing resistor, specifically, the heat-conducting silica gel 5 is 704 heat-conducting silica gel 5.
S3: installation of an inner-layer waterproof structure: firstly, pouring the pouring sealant 6 into the inner shell 32, wherein the pouring sealant 6 is specifically U6942 pouring sealant 6, then inserting the immersion end of the connecting wire 1 into the inner shell 32 to enable the sleeve 31 to be placed in the inner shell 32, then pressing two annular grooves at the connecting position of the inner shell 32 and the connecting wire 1 by using a channeling machine to enable the inner shell 32 and the connecting wire 1 to be tightly pressed, and finally putting the connecting wire into an oven for drying.
S4: installation of an outer-layer waterproof structure: firstly, the color-changing paper is adhered to the outer peripheral surface of the inner shell 32, then the transparent outer shell 33 is formed at the soaking end of the connecting line 1 through injection molding by using an injection molding machine, finally the tail end 13 is formed at the soaking end of the connecting line 1 through injection molding, and the tail end 13 is fixedly welded with the transparent outer shell 33, so that the inner shell 32 and the color-changing paper are placed in a completely closed cavity of the transparent outer shell 33.
The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A warning sensor of intaking which characterized in that: the temperature sensing device comprises a connecting wire (1), a temperature sensing element and a protective shell (3), wherein the temperature sensing element and the protective shell (3) are both connected to the soaking end of the connecting wire (1), the temperature sensing element is positioned in a closed cavity of the protective shell (3), and a heat-conducting medium is filled in the protective shell (3); a humidity-sensitive color-changing layer (4) is arranged in the cavity of the protective shell (3), and the outer wall of the protective shell (3) is transparent.
2. A water intake warning sensor as claimed in claim 1, wherein: the protective housing (3) includes transparent outer shell (33), the end of soaking of connecting wire (1) inserts in transparent outer shell (33), the end of soaking of connecting wire (1) is moulded plastics has terminal line tail (13), terminal line tail (13) with transparent outer shell (33) butt fusion.
3. A water intake warning sensor as claimed in claim 2, wherein: the protective shell (3) further comprises an inner shell (32), the inner shell (32) is sleeved on the outer peripheral surface of the soaking end of the connecting wire (1), and the temperature sensing element is located in the inner shell (32); the humidity-sensitive discoloring layer (4) is positioned in an interlayer formed by the inner shell (32) and the transparent outer shell (33).
4. A water inlet warning sensor as claimed in claim 3 wherein: the outer wall of the inner shell (32) is recessed inwards and compresses the connecting wire (1).
5. A water inlet warning sensor as claimed in claim 3 wherein: protective housing (3) still include sleeve pipe (31), the end of soaking of connecting wire (1) is located and inner shell (32) are arranged in to sleeve pipe (31) cover, heat-conducting medium includes heat conduction silica gel (5), heat conduction silica gel (5) are filled in sleeve pipe (31) and are wrapped up temperature sensing element.
6. The water inlet warning sensor as claimed in claim 5, wherein: the heat-conducting medium further comprises pouring sealant (6), and the pouring sealant (6) is filled in the inner shell (32) and wraps the sleeve (31).
7. A water intake warning sensor as claimed in claim 1, wherein: the moisture-sensitive color-changing layer (4) is color-changing paper.
8. A water intake warning sensor as claimed in claim 1, wherein: and a sucking disc (12) is arranged at the immersion end of the connecting line (1).
9. A water intake warning sensor as claimed in claim 1, wherein: the moisture-sensitive color-changing layer (4) is a water-absorbing sponge with anhydrous copper sulfate attached to the outer side.
10. A process for manufacturing a water inlet warning sensor according to claim 6, wherein: the method comprises the following steps:
s1: and (3) mounting a temperature sensing element: fixedly connecting the temperature sensing element to the immersion end of the connecting wire (1);
s2: and (3) installing an inner waterproof structure: sleeving a sleeve (31) at the soaking end of the connecting wire (1) so that the temperature sensing element is arranged in the sleeve (31), and then filling the sleeve (31) with heat-conducting silica gel (5) so that the temperature sensing element is completely coated by the heat-conducting silica gel (5);
s3: installation of an inner-layer waterproof structure: pouring the pouring sealant (6) into the inner shell (32), then inserting the immersion end of the connecting wire (1) into the inner shell (32), placing the sleeve (31) into the inner shell (32), then pressing the inner shell (32) and the connecting wire (1) tightly, and finally drying;
s4: installation of an outer-layer waterproof structure: the temperature-sensitive color-changing layer covers the peripheral surface of the inner shell (32), then the transparent outer shell (33) is formed at the soaking end of the connecting line (1) in an injection molding mode, finally the tail end (13) is formed at the soaking end of the connecting line (1) in an injection molding mode, the tail end is fixedly welded with the transparent outer shell (33), and the inner shell (32) and the color-changing paper are placed in a cavity completely sealed by the transparent outer shell (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111243716.0A CN114034402A (en) | 2021-10-25 | 2021-10-25 | Water inlet warning sensor and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111243716.0A CN114034402A (en) | 2021-10-25 | 2021-10-25 | Water inlet warning sensor and processing technology thereof |
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| CN114034402A true CN114034402A (en) | 2022-02-11 |
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| CN202111243716.0A Pending CN114034402A (en) | 2021-10-25 | 2021-10-25 | Water inlet warning sensor and processing technology thereof |
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| CN111965387A (en) * | 2020-10-22 | 2020-11-20 | 宁波中车时代传感技术有限公司 | High-reliability acceleration sensor for motor train unit and preparation method thereof |
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2021
- 2021-10-25 CN CN202111243716.0A patent/CN114034402A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207019811U (en) * | 2017-06-16 | 2018-02-16 | 大陆汽车电子(长春)有限公司 | Temperature sensor |
| CN207515924U (en) * | 2017-10-31 | 2018-06-19 | 河南创卓仓储科技有限公司 | A kind of temperature sensor |
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