CN111947802A - Electric connection joint temperature early warning device - Google Patents
Electric connection joint temperature early warning device Download PDFInfo
- Publication number
- CN111947802A CN111947802A CN202010638497.5A CN202010638497A CN111947802A CN 111947802 A CN111947802 A CN 111947802A CN 202010638497 A CN202010638497 A CN 202010638497A CN 111947802 A CN111947802 A CN 111947802A
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- China
- Prior art keywords
- groove
- test paper
- warning device
- sealing structure
- electrical connection
- Prior art date
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- Granted
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/003—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using absorption or generation of gas, e.g. hydrogen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/7756—Sensor type
- G01N2021/7759—Dipstick; Test strip
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a temperature early warning device for an electrical connection joint. Electric connection connects temperature early warning device includes: base, seal structure and test paper. When the electric connection joint is in a high temperature condition due to faults, the heat of the electric connection joint can be transferred to the bottom wall of the groove through the outer surface of the base and then transferred to the sealing structure through the bottom wall of the groove. The test gas inside the sealing structure expands after being heated, so that the sealing structure is broken, and the test gas is released and reacts with the test paper to cause the test paper to change color. Because the colour is irreversible after the test paper discolours, consequently, even when the load is not in operation, the test paper that discolours still can warn the staff, makes the staff discover that electrical connection connects the condition that experiences the excess temperature, and then the maintainer of being convenient for in time overhauls electrical connection connects.
Description
Technical Field
The invention relates to the technical field of temperature detection of electrical connection joints, in particular to a temperature early warning device for an electrical connection joint.
Background
With the popularization of the domestic urbanization process, power supply circuits in urban areas mostly adopt a power supply mode of cables or overhead lines, and a large number of electrical connections exist on the circuits. The electrical connector terminal generates heat during load operation, and the amount of heat generated in a normal state is acceptable. However, if poor contact, oxidation, aging, etc. occurs at the electrical connection joint, the temperature at the electrical connection joint may rise too high. The problem of excessive temperatures due to the failure of the electrical connection joint can lead to accelerated degradation of the electrical connection joint and even to serious accidents. The reason for influencing the over-high temperature of the electric connection joint is mainly caused by the fact that the construction process is not standard, for example, the middle head lead is not tightly pressed, the resistance at the joint is too large and generates heat, the over-high temperature may cause the electric connection blowing phenomenon, the interphase short circuit tripping phenomenon and the like, and fire disasters may be caused seriously.
Disclosure of Invention
Accordingly, it is necessary to provide a temperature warning device for an electrical connection joint, which is used to solve the problem that the temperature of the electrical connection joint is too high due to the failure during the operation of a load.
The embodiment of the application provides an electric connection connects temperature early warning device, includes:
the base is used for being attached to the electrical connection joint, a groove is formed in the base, and an opening of the groove faces away from the electrical connection joint;
the sealing structure is positioned in the groove, the interior of the sealing structure is used for containing a test gas and enabling the test gas to be sealed, and the test gas can be broken and released after being heated and expanded; and
the sealing structure is arranged between the bottom wall of the groove and the test paper, the test paper and the test gas react and then change color, and the color of the test paper after the color change is irreversible.
When the electric connection joint is in a high temperature condition due to faults, the heat of the electric connection joint can be transferred to the bottom wall of the groove through the outer surface of the base and then transferred to the sealing structure through the bottom wall of the groove. The test gas inside the sealing structure expands after being heated, so that the sealing structure is broken, and the test gas is released and reacts with the test paper to cause the test paper to change color. Because the colour is irreversible after the test paper discolours, consequently, even when the load is not in operation, the test paper that discolours still can warn the staff, makes the staff discover that electrical connection connects the condition that experiences the excess temperature, and then the maintainer of being convenient for in time overhauls electrical connection connects.
In an embodiment, the number of the grooves is multiple, the grooves are arranged independently, the sealing structure is arranged in each groove, the test paper is arranged at a position opposite to the bottom wall of each groove, and each sealing structure is located between the bottom wall of the corresponding groove and the corresponding test paper.
In an embodiment, the electrical connector temperature early warning device further includes a cover body connected to the base, the cover body covers a surface of the base opposite to the electrical connector, and the test paper is disposed on the cover body.
In an embodiment, an opening is formed in the cover body, the position of the opening corresponds to the groove, and the test paper is located at the opening.
In one embodiment, the temperature early warning device for the electrical connection joint further comprises a heat insulation layer, and the heat insulation layer covers the side wall of the groove; or the side wall of the groove is made of a heat insulating material.
In an embodiment, each side wall of the groove is covered with the thermal insulation layer.
In one embodiment, the sealing structure is a sealing ball made of a rubber film.
In one embodiment, the sealing structure is provided with an inflation opening and a sealing portion for sealing the inflation opening.
In one embodiment, the bottom wall of the groove is made of a metal material; and/or the presence of a gas in the gas,
and the surface of the base, which is attached to the electrical connection joint, is coated with heat-conducting paste.
In one embodiment, the test strip is phenolphthalein test strip, and the test gas is ammonia gas.
Drawings
FIG. 1 is a schematic structural diagram of an electrical connector temperature warning apparatus according to an embodiment;
FIG. 2 is a schematic view showing the connection between the base and the sealing structure of FIG. 1;
fig. 3 is a schematic structural view of the cover of fig. 1.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 and fig. 2, an electrical connection terminal temperature early warning device 100 is provided in an embodiment of the present disclosure. The electric connection joint temperature early warning device 100 includes: a base 110, a sealing structure 120, and a test strip 130.
The base 110 is adapted to engage an electrical connection terminal (not shown). Referring to fig. 2, the base 110 is provided with a groove 101, and an opening of the groove 101 faces away from the electrical connection terminal. Seal structure 120 is located within recess 101. Heat of the electrical connection terminals can be transferred to the sealing structure 120 through the bottom wall of the groove 101. The interior of the sealing structure 120 is used to contain and seal the test gas. The test gas can cause the seal structure 120 to rupture after expansion by heat. The test strip 130 is opposite the bottom wall of the recess 101. The sealing structure 120 is located between the bottom wall of the recess 101 and the test strip 130. The test paper 130 changes color after reacting with the test gas, and the color of the test paper 130 changed color is irreversible.
Specifically, the electrical connection joint is, for example, a busbar, a wire clamp, a wire barrel, or the like. The base 110 is used for fixing with the electrical connection joint, and the surface of the base 110 is attached to the electrical connection joint.
Since the opening of the groove 101 faces away from the electrical connector, the sealing structure 120 is located in the groove 101, so that when the electrical connector is over-heated due to a fault, heat of the electrical connector can be transferred to the bottom wall of the groove 101 through the outer surface of the base 110 and then transferred to the sealing structure 120 through the bottom wall of the groove 101.
The interior of the seal 120 is filled with a test gas. Since the heat of the electrical connection terminals is transferred to the sealing structure 120, the test gas inside the sealing structure 120 expands after being heated. When the tension of the test gas after expansion is greater than the restraining force of the seal 120, the seal 120 ruptures, thereby releasing the test gas.
Since the test strip 130 is opposite to the bottom wall of the groove 101 and the sealing structure 120 is located between the bottom wall of the groove 101 and the test strip 130, the test gas is released from the sealing structure 120 and then flows toward the test strip 130, which causes the test strip 130 to change color.
In the present embodiment, the test gas is, for example, ammonia gas. Ammonia is a gas that expands very easily when heated. The test paper 130 may be phenolphthalein test paper, which turns red when exposed to the test gas and has an irreversible color.
It is understood that in other embodiments, the test gas may be other gases and the test strip 130 may be other strips.
When the load is running, the electrical connection joint increases in temperature due to the occurrence of a fault. When the load is not running, the temperature of the electrical connection joint will decrease. Since the color of the test paper 130 is not reversible after the color change, the test paper 130 does not change back to the original color even after the temperature of the electrical connection terminal is lowered, so that the worker can still find the color change of the test paper 130 during the inspection. Therefore, even when the load does not operate, the color-changing test paper 130 can still warn the operator, so that the operator can find that the electrical connection joint is subjected to the over-temperature condition, and then the maintenance personnel can conveniently and timely overhaul the electrical connection joint, so as to avoid causing a large power accident.
In the above-mentioned temperature warning device 100 for electrical connection joints, when the temperature of the electrical connection joints is too high due to a fault, the heat of the electrical connection joints can be transferred to the bottom wall of the groove 101 through the outer surface of the base 110, and then transferred to the sealing structure 120 through the bottom wall of the groove 101. The test gas inside the sealing structure 120 expands upon heating, so that the sealing structure 120 is ruptured, and thus the test gas is released and reacts with the test strip 130, causing the test strip 130 to change color. Because the color of the test paper 130 is irreversible after the color change, even when the load does not run, the color-changed test paper 130 can still warn the worker, so that the worker finds that the electric connection joint is subjected to the condition of over-high temperature, and then the overhaul and maintenance personnel can overhaul the electric connection joint in time.
Referring to fig. 2, in an embodiment, the number of the grooves 101 is multiple. The plurality of grooves 101 are provided independently of each other. A sealing structure 120 is provided in each groove 101. Referring to fig. 1, a test paper 130 is disposed at a position opposite to the bottom wall of each groove 101. The sealing structure 120 is located between the bottom wall of the corresponding recess 101 and the corresponding test strip 130.
Specifically, in the present embodiment, the number of the grooves 101 is 30. The plurality of grooves 101 are distributed in an array.
When the base 110 is attached to the electrical connection joint, each groove 101, the sealing structure 120 corresponding to each groove 101, and the test paper 130 corresponding to each groove 101 correspond to one position of the electrical connection joint, so that the position of the electrical connection joint where the temperature is too high can be judged through the groove 101 corresponding to the test paper 130 with a changed color. For example, if the test strip 130 corresponding to a location of the electrical connection joint changes color, it indicates that the electrical connection joint has experienced an excessive temperature at that location. For example, if the color of the test strip 130 corresponding to each of the plurality of grooves 101 changes, it will be described that the positions of the electrical connection terminals corresponding to each of the plurality of grooves 101 are all over-heated.
Because the quantity of recess 101 is a plurality of and mutually independent, then a plurality of recesses 101 are corresponding to a plurality of positions that electrical connection connects respectively to seal structure 120 and test paper 130 that correspond through a plurality of recesses 101 can carry out temperature early warning to a plurality of positions that electrical connection connects respectively independently, so that more accurate judgement electrical connection connects the source position that generates heat, and the maintainer of being convenient for finds out the problem, improves and restores maintenance efficiency.
Referring to fig. 1 and fig. 3, in an embodiment, the electrical connector temperature warning apparatus 100 further includes a cover 140. The cover 140 is connected to the base 110. The cover 140 covers the surface of the base 110 opposite to the electrical connector, and the test paper 130 is disposed on the cover 140.
Specifically, the cover 140 is provided with an opening (not shown). The test paper 130 may be adhered to the cover 140 by gluing, and the test paper 130 is located at the opening. Since the position of the opening corresponds to the groove 101, the test paper 130 is opposite to the bottom wall of the groove 101. By connecting the cover 140 to the base 110 and covering the surface of the base 110 facing away from the electrical connector with the cover 140, the test paper 130 is easily opposite to the bottom wall of the groove 101, and the sealing structure 120 is easily located between the bottom wall of the groove 101 and the test paper 130.
In one embodiment, the number of the openings is multiple, and the openings correspond to the grooves 101 one by one. A test strip 130 is disposed at an opening corresponding to each groove 101, such that each sealing structure 120 may be located between the corresponding test strip 130 and the bottom wall of the groove 101.
In one embodiment, electrical connector temperature warning apparatus 100 further includes a thermal insulation layer (not shown). The insulating layer covers the side walls of the recess 101.
Specifically, the heat insulation layer is made of a heat insulation material. The heat insulating material is, for example, glass fiber, asbestos, or the like. By covering the side walls of the recess 101 with a thermally insulating layer, the heat dissipation of the electrical connection terminal to the environment can be reduced, reducing the influence of the ambient temperature on the temperature of the electrical connection terminal.
In other embodiments, the thermal insulation layer may not be provided, and the material used for the side wall of the groove 101 is a thermal insulation material, which can also reduce the influence of the ambient temperature on the temperature of the electrical connection joint.
In an embodiment, each side wall of the groove 101 is covered with a heat insulation layer, so that heat transfer between positions of the electrical connection joint corresponding to each groove 101 can be reduced, and whether the temperature of the position of the electrical connection joint corresponding to each groove 101 is too hot or not can be accurately judged, so that a maintenance and repair person can quickly and accurately judge the position of the electrical connection joint which is too hot.
In one embodiment, the sealing structure 120 is a sealing ball made of a rubber membrane. By storing the test gas in the sealing ball made of rubber membrane, the test gas is expanded by heating and then easily breaks the rubber membrane, so that the test gas overflows and reacts with the test paper 130.
The maximum restraint force of the seal 120 may be tested in advance by experimentation and when this maximum restraint force is reached, the seal 120 ruptures. From this maximum restraining force, a threshold value for the temperature at the corresponding location at the electrical connection joint at which the seal structure 120 ruptures may be calculated or experimentally derived. Then, when the color of the test paper 130 changes, it indicates that the sealing structure 120 reaches the maximum binding force, and the temperature at the corresponding position of the electrical connection joint reaches the threshold value, so that the worker can judge the temperature at the corresponding position of the electrical connection joint when the sealing structure 120 is broken.
In one embodiment, a gas fill port (not shown) and a seal (not shown) to seal the gas fill port are provided on the sealing structure 120.
Specifically, an inflation port may be formed in the sealing ball made of the rubber film, the testing gas may be inflated into the sealing ball through the inflation port, and then the inflation port may be sealed by the sealing portion. The sealing portion may be a sealing plug.
In one embodiment, the bottom wall of the groove 101 is made of a metal material, such as copper or aluminum. The metal material has good thermal conductivity so that heat of the electrical connection terminal is easily transferred to the sealing structure 120 through the bottom wall of the groove 101.
In one embodiment, the surface of the base 110 that is attached to the electrical connection terminal is coated with a thermally conductive paste, thereby facilitating heat transfer from the electrical connection terminal to the base 110 and then to the sealing structure 120 through the bottom wall of the groove 101. The heat conductive paste is, for example, silicone paste.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides an electric connector connects temperature early warning device which characterized in that includes:
the base is used for being attached to the electrical connection joint, a groove is formed in the base, and an opening of the groove faces away from the electrical connection joint;
the sealing structure is positioned in the groove, the interior of the sealing structure is used for containing a test gas and enabling the test gas to be sealed, and the test gas can be broken and released after being heated and expanded; and
the sealing structure is arranged between the bottom wall of the groove and the test paper, the test paper and the test gas react and then change color, and the color of the test paper after the color change is irreversible.
2. The electrical connector temperature early warning device according to claim 1, wherein the number of the grooves is plural, the plural grooves are arranged independently of each other, the sealing structure is arranged in each of the grooves, the test paper is arranged at a position opposite to a bottom wall of each of the grooves, and each of the sealing structures is arranged between the bottom wall of the corresponding groove and the corresponding test paper.
3. The temperature warning device for the electrical connector according to claim 1 or 2, further comprising a cover connected to the base, wherein the cover covers a surface of the base opposite to the electrical connector, and the test paper is disposed on the cover.
4. The electric connector temperature early warning device of claim 3, wherein the cover body is provided with an opening, the position of the opening corresponds to the groove, and the test paper is located at the opening.
5. The electric connection joint temperature early warning device according to claim 1 or 2, further comprising a heat insulation layer covering the side wall of the groove; or the side wall of the groove is made of a heat insulating material.
6. The electrical connector lug temperature warning device of claim 5, wherein each sidewall of the recess is covered with the thermal insulating layer.
7. The electrical connector joint temperature warning device of claim 1, wherein the sealing structure is a sealing ball made of a rubber film.
8. The electrical connector joint temperature early warning device of claim 1, wherein the sealing structure is provided with an inflation inlet and a sealing portion for sealing the inflation inlet.
9. The electrical connector terminal temperature warning apparatus of claim 1,
the bottom wall of the groove is made of a metal material; and/or the presence of a gas in the gas,
and the surface of the base, which is attached to the electrical connection joint, is coated with heat-conducting paste.
10. The electrical connector temperature early warning device of claim 1, wherein the test paper is phenolphthalein test paper, and the test gas is ammonia gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638497.5A CN111947802B (en) | 2020-07-06 | 2020-07-06 | Electric connection joint temperature early warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638497.5A CN111947802B (en) | 2020-07-06 | 2020-07-06 | Electric connection joint temperature early warning device |
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| Publication Number | Publication Date |
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| CN111947802A true CN111947802A (en) | 2020-11-17 |
| CN111947802B CN111947802B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010638497.5A Active CN111947802B (en) | 2020-07-06 | 2020-07-06 | Electric connection joint temperature early warning device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06313738A (en) * | 1993-04-28 | 1994-11-08 | Ngk Spark Plug Co Ltd | Method of detecting excessive temperature for sensor and sensor using the same |
| JPH07134071A (en) * | 1993-11-11 | 1995-05-23 | Ohbayashi Corp | Intelligent structural member |
| GB9825624D0 (en) * | 1998-11-23 | 1999-01-13 | Rolls Royce Plc | Model test apparatus and method |
| WO2009030908A2 (en) * | 2007-09-06 | 2009-03-12 | It-Is International Ltd | Thermal control apparatus for chemical and biochemical reactions |
| WO2014119121A1 (en) * | 2013-02-01 | 2014-08-07 | シャープ株式会社 | Storage container |
| CN104330188A (en) * | 2014-11-25 | 2015-02-04 | 胡浩 | One-time over-temperature detecting method |
| KR101557839B1 (en) * | 2014-04-04 | 2015-10-06 | 주식회사 삼정화학 | Multi-function fertilizer sack |
| CN206449323U (en) * | 2016-12-07 | 2017-08-29 | 东莞市森光电子材料有限公司 | A kind of medical flexible rubber hose |
| CN109333954A (en) * | 2018-10-26 | 2019-02-15 | 姚建月 | A kind of sprayer of injection molding machine thermostat and its warning system |
-
2020
- 2020-07-06 CN CN202010638497.5A patent/CN111947802B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06313738A (en) * | 1993-04-28 | 1994-11-08 | Ngk Spark Plug Co Ltd | Method of detecting excessive temperature for sensor and sensor using the same |
| JPH07134071A (en) * | 1993-11-11 | 1995-05-23 | Ohbayashi Corp | Intelligent structural member |
| GB9825624D0 (en) * | 1998-11-23 | 1999-01-13 | Rolls Royce Plc | Model test apparatus and method |
| WO2009030908A2 (en) * | 2007-09-06 | 2009-03-12 | It-Is International Ltd | Thermal control apparatus for chemical and biochemical reactions |
| WO2014119121A1 (en) * | 2013-02-01 | 2014-08-07 | シャープ株式会社 | Storage container |
| KR101557839B1 (en) * | 2014-04-04 | 2015-10-06 | 주식회사 삼정화학 | Multi-function fertilizer sack |
| CN104330188A (en) * | 2014-11-25 | 2015-02-04 | 胡浩 | One-time over-temperature detecting method |
| CN206449323U (en) * | 2016-12-07 | 2017-08-29 | 东莞市森光电子材料有限公司 | A kind of medical flexible rubber hose |
| CN109333954A (en) * | 2018-10-26 | 2019-02-15 | 姚建月 | A kind of sprayer of injection molding machine thermostat and its warning system |
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| Publication number | Publication date |
|---|---|
| CN111947802B (en) | 2022-06-03 |
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