CN204373813U - A kind of electric thermo-couple test furnace protective device - Google Patents
A kind of electric thermo-couple test furnace protective device Download PDFInfo
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- CN204373813U CN204373813U CN201520068166.7U CN201520068166U CN204373813U CN 204373813 U CN204373813 U CN 204373813U CN 201520068166 U CN201520068166 U CN 201520068166U CN 204373813 U CN204373813 U CN 204373813U
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- test furnace
- electric thermo
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Abstract
The utility model provides a kind of electric thermo-couple test furnace protective device, comprise for electric thermo-couple test furnace, standard couple is provided with in described electric thermo-couple test furnace, it is characterized in that, described electric thermo-couple test furnace protective device also comprises protected location further, described protected location comprises the monitoring thermopair be arranged in described electric thermo-couple test furnace, described one end of monitoring thermopair is connected with the signal input part of digital display temperature controller, the protection contact of described digital display temperature controller is connected with electric loop, described digital display temperature controller controls described electric loop generation action when described electric thermo-couple test furnace occurs abnormal, described electric thermo-couple test furnace is made to stop heating.The utility model has the advantage of: avoid electric thermo-couple test furnace Yin Wendu too high and cause electric furnace heating wire to blow, standard couple, the too high damage of thermopair Yin Wendu to be checked.
Description
Technical field
The utility model is used for thermocouple calibration field, and specifically, the utility model relates to a kind of electric thermo-couple test furnace protective device.
Background technology
Temperature control is the key link of most industry process control, and its realization is fully contacted to obtain its temperature parameter temperature sensor and object under test.In industrial processes, thermopair is most widely used temperature element, and the conductor of its two kinds of unlike materials forms a closed loop, and when temperature in loop is different (there is the temperature difference), namely create thermoelectrical potential, this phenomenon is called thermoelectric effect.Thermopair utilizes this principle to carry out measuring tempeature exactly.The measuring accuracy of thermopair and accuracy are directly connected to the quality of industrial products, and according to national measurement calibrating regulation, thermopair must periodic verification.Electric thermo-couple test furnace is requisite equipment in the thermocouple calibration process of various Graduation Number in 300 DEG C ~ 1200 DEG C temperature ranges, control furnace body solid-state relay break-make by thermocouple auto-verification system output signal in thermocouple calibration process and carry out electrical heating, the correctness of its using method directly affects its serviceable life and maintenance cost.
In thermocouple calibration process, because misoperation there will be the short circuit phenomenon between standard couple two electrode, monitor temperature and actual temperature is caused to have bigger difference.In this case thermocouple verification system can send the signal of continuous heating to assay furnace, this signal makes the long charged heating of heating major loop of assay furnace, constant temperature is caused to raise fast and final overtemperature, to such an extent as to electric furnace heating wire burns out, thus shorten the serviceable life of assay furnace, indirectly add the cost of thermocouple calibrating.
Utility model content
(1) in order to better prevent assay furnace in verification process from damaging because heating-up temperature is too high, extending the serviceable life of stove, saving the cost of thermocouple calibration.Therefore, need to do further improvement, to eliminate the problems referred to above to current thermocouple calibration device.
(2) the utility model is primarily of the digital display temperature controller with warning output node (often open, normally closed), for monitoring thermopair (relay, electric bell, the single phase ac contactor) composition of furnace temperature.
(3) same for the thermopair monitored for furnace temperature standard couple, tested thermopair are placed in same calibrating temperature field to measure in real time furnace temperature and measuring-signal is accessed digital display temperature controller.Wherein, the temperature alarming of digital display temperature controller is set as the highest permission furnace temperature of assay furnace, report to the police and export in the current supply circuit of (normally closed) contact by auxiliary reclay series connection access assay furnace, described digital display temperature controller controls described electric loop action when described electric thermo-couple test furnace occurs abnormal, makes described electric thermo-couple test furnace current supply circuit power-off stop heating.
The utility model provides a kind of electric thermo-couple test furnace protective device, comprise for electric thermo-couple test furnace, standard couple is provided with in described electric thermo-couple test furnace, it is characterized in that, described electric thermo-couple test furnace protective device also comprises protected location further, described protected location comprises the monitoring thermopair be arranged in described electric thermo-couple test furnace, described one end of monitoring thermopair is connected with the signal input part of digital display temperature controller, the protection contact of described digital display temperature controller is connected with electric loop, described digital display temperature controller controls described electric loop generation action when described electric thermo-couple test furnace occurs abnormal, described electric thermo-couple test furnace is made to stop heating.
Alternatively, described digital display temperature controller is provided with protecting control contact, carries out corresponding protecting control for controlling electric loop.
Alternatively, when the value alert higher than described temperature of temperature in described electric thermo-couple test furnace, described protecting control contact; trigger described control electric loop; the auxiliary reclay controlling described electric thermo-couple test furnace conducting obtains electric adhesive, and auxiliary reclay contact is opened, and assay furnace dead electricity stops heating.
Alternatively, be provided with temperature alarming value in described digital display temperature controller, described temperature alarming value is 1200 DEG C.
Alternatively, be also provided with warning device in described digital display temperature controller, when temperature in described electric thermo-couple test furnace is higher than described temperature alarming value, electric bell rings reminds calibration operation personnel inspection to fix a breakdown.
Alternatively, described thermocouple calibration device also comprises temperature control instrument further.
Alternatively, described temperature control instrument is connected with described monitoring thermopair.
The utility model has the advantage of:
(1) avoid electric thermo-couple test furnace Yin Wendu too high and cause electric furnace heating wire to blow, standard couple, the too high damage of thermopair Yin Wendu to be checked.
(2) protection is formed to electric thermo-couple test furnace, standard hot even summation thermopair to be checked, the cost in the indirect saving actual verification process of thermopair.
(3) described protected location can control automatically, reduces operational risk.
Accompanying drawing explanation
Following accompanying drawing of the present utility model in this as a part of the present utility model for understanding the utility model.Shown in the drawings of embodiment of the present utility model and description thereof, be used for explaining device of the present utility model and principle.In the accompanying drawings:
Fig. 1 is calibrating installation structural representation of the present utility model;
Fig. 2 is the electrical block diagram of protected location of the present utility model.
Embodiment
In the following description, give a large amount of concrete details to provide to understand more thoroughly the utility model.But, it is obvious to the skilled person that the utility model can be implemented without the need to these details one or more.In other example, in order to avoid obscuring with the utility model, technical characteristics more well known in the art are not described.
Should be understood that, the utility model can be implemented in different forms, and should not be interpreted as the embodiment that is confined to propose here.On the contrary, provide these embodiments will expose thoroughly with complete, and scope of the present utility model is fully passed to those skilled in the art.In the accompanying drawings, in order to clear, the size in Ceng He district and relative size may be exaggerated.Same reference numerals represents identical element from start to finish.
It should be understood that when parts or element " be connected to " or " being coupled to " other element time, its can directly on other parts or element, with it adjacent, connect or be coupled to other element or layer.
The object of term is only to describe specific embodiment and not as restriction of the present utility model as used herein.When this uses, " one ", " one " and " described/to be somebody's turn to do " of singulative is also intended to comprise plural form, unless context is known point out other mode.It is also to be understood that term " composition " and/or " comprising ", when using in this specification, determine the existence of described feature, integer, step, operation, element and/or parts, but do not get rid of one or more other feature, integer, step, operation, element, the existence of parts and/or group or interpolation.When this uses, term "and/or" comprises any of relevant Listed Items and all combinations.
In order to thoroughly understand the utility model, by proposing detailed step and detailed structure in following description, to explain the technical solution of the utility model.Preferred embodiment of the present utility model is described in detail as follows, but except these are described in detail, the utility model can also have other embodiments.
Embodiment 1
The utility model is in order to overcome problems of the prior art, provide a kind of electric thermo-couple test furnace temperature protective device, described electric thermo-couple test furnace temperature protective device at least comprises the thermopair that furnace temperature detects, (wherein often open for one group with warning contact, one group is normally closed) digital display temperature controller, the thermoelectrical potential signal of described protection thermopair is connected with the signal input part of digital display temperature controller, and in described digital display temperature controller design temperature alarming value, such as described temperature alarming value is set to the maximum heating temperature of assay furnace, but be not limited to this temperature, can set according to the range of thermopair to be checked
Principle of work of the present utility model is: pass through power supply by single phase ac contactor KM, the electrical equipments such as auxiliary reclay KA, temperature digital display control device WK connect according to schematic diagram as shown in Figure 1.Time under normal condition, described standard couple and described electric thermo-couple test furnace normally run, and the temperature of being monitored by standard couple by thermocouple auto-verification measuring system carries out temperature control heating to electric thermo-couple test furnace, detect described galvanic couple to be measured; Temperature acquisition control system can be caused to judge temperature when standard couple two electrode short circuits or other faults malfunctioning and to assay furnace continuous heating; but when temperature arrives the temperature alarming value set in the described digital display temperature controller of described protected location (such as; when temperature is higher than 1300 DEG C); warning contact WK in described digital display temperature controller connects; auxiliary reclay KA obtains electric adhesive; auxiliary reclay KA contact is opened; assay furnace dead electricity stops heating; temperature is not less than 1300 DEG C, and assay furnace can not obtain electrical heating again.
The utility model is in order to solve problems of the prior art; provide a kind of new thermocouple calibration device; add protected location in said device; described protected location comprises a protection thermopair; be arranged in described electric thermo-couple test furnace with described standard couple, thermopair to be measured; when occurring abnormal in described electric thermo-couple test furnace; described protective device triggers automatically; make the power-off of described thermocouple calibration device; stop heating forming protection to described electric thermo-couple test furnace, standard hot even summation thermopair to be measured, avoid being damaged.
The utility model is illustrated by above-described embodiment, but should be understood that, above-described embodiment just for the object of illustrating and illustrate, and is not intended to the utility model to be limited in described scope of embodiments.In addition it will be understood by those skilled in the art that; the utility model is not limited to above-described embodiment; more kinds of variants and modifications can also be made, within these variants and modifications all drop on the utility model scope required for protection according to instruction of the present utility model.Protection domain of the present utility model defined by the appended claims and equivalent scope thereof.
Claims (7)
1. an electric thermo-couple test furnace protective device, comprise for electric thermo-couple test furnace, standard couple is provided with in described electric thermo-couple test furnace, it is characterized in that, described electric thermo-couple test furnace protective device also comprises protected location further, described protected location comprises the monitoring thermopair be arranged in described electric thermo-couple test furnace, described one end of monitoring thermopair is connected with the signal input part of digital display temperature controller, the protection contact of described digital display temperature controller is connected with electric loop, described digital display temperature controller controls described electric loop generation action when described electric thermo-couple test furnace occurs abnormal, described electric thermo-couple test furnace is made to stop heating.
2. electric thermo-couple test furnace protective device according to claim 1, is characterized in that, described digital display temperature controller is provided with protecting control contact, carries out corresponding protecting control for controlling electric loop.
3. electric thermo-couple test furnace protective device according to claim 2; it is characterized in that; when the value alert higher than described temperature of temperature in described electric thermo-couple test furnace; described protecting control contact; trigger described control electric loop; the auxiliary reclay controlling described electric thermo-couple test furnace conducting obtains electric adhesive, and auxiliary reclay contact is opened, and assay furnace dead electricity stops heating.
4. the electric thermo-couple test furnace protective device according to claim 1 or 3, is characterized in that, is provided with temperature alarming value in described digital display temperature controller, and described temperature alarming value is 1200 DEG C.
5. electric thermo-couple test furnace protective device according to claim 3; it is characterized in that; also be provided with warning device in described digital display temperature controller, when temperature in described electric thermo-couple test furnace is higher than described temperature alarming value, electric bell rings reminds calibration operation personnel inspection to fix a breakdown.
6. electric thermo-couple test furnace protective device according to claim 1, is characterized in that, described thermocouple calibration device also comprises temperature control instrument further.
7. electric thermo-couple test furnace protective device according to claim 1, is characterized in that, described temperature control instrument is connected with described monitoring thermopair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520068166.7U CN204373813U (en) | 2015-01-29 | 2015-01-29 | A kind of electric thermo-couple test furnace protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520068166.7U CN204373813U (en) | 2015-01-29 | 2015-01-29 | A kind of electric thermo-couple test furnace protective device |
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| Publication Number | Publication Date |
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| CN204373813U true CN204373813U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520068166.7U Expired - Fee Related CN204373813U (en) | 2015-01-29 | 2015-01-29 | A kind of electric thermo-couple test furnace protective device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340067A (en) * | 2017-06-22 | 2017-11-10 | 芜湖航天特种电缆厂股份有限公司 | Anti- winding wire burns out overheat protector siren |
| TWI656328B (en) * | 2018-08-09 | 2019-04-11 | 英業達股份有限公司 | Furnace temperature monitoring system and method thereof |
| CN112453677A (en) * | 2020-12-14 | 2021-03-09 | 东莞市思榕智能装备有限公司 | Protection method for abnormal temperature rise of hot-press welding control system |
-
2015
- 2015-01-29 CN CN201520068166.7U patent/CN204373813U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340067A (en) * | 2017-06-22 | 2017-11-10 | 芜湖航天特种电缆厂股份有限公司 | Anti- winding wire burns out overheat protector siren |
| TWI656328B (en) * | 2018-08-09 | 2019-04-11 | 英業達股份有限公司 | Furnace temperature monitoring system and method thereof |
| CN112453677A (en) * | 2020-12-14 | 2021-03-09 | 东莞市思榕智能装备有限公司 | Protection method for abnormal temperature rise of hot-press welding control system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20160129 |
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| EXPY | Termination of patent right or utility model |