CN205227820U - Temperature sensing detection system - Google Patents
Temperature sensing detection system Download PDFInfo
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- CN205227820U CN205227820U CN201520971116.XU CN201520971116U CN205227820U CN 205227820 U CN205227820 U CN 205227820U CN 201520971116 U CN201520971116 U CN 201520971116U CN 205227820 U CN205227820 U CN 205227820U
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- sensitive detection
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- 238000001514 detection method Methods 0.000 title abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 239000010779 crude oil Substances 0.000 claims description 37
- 238000011896 sensitive detection Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000005461 lubrication Methods 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 6
- 238000011160 research Methods 0.000 abstract description 7
- 230000002045 lasting effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model provides a temperature sensing detecting system, include: in-furnace temperature measuring device, it includes: the track is circular and the outer annular wall of the track is attached to the inner circumferential wall of the heating furnace, and the track can reciprocate along the axial direction of the heating furnace; the movable temperature detector is arranged on the inner annular wall of the track and can do circular motion along the track; a first thermocouple is arranged outside the movable temperature detector. The track can be along heating furnace axial reciprocating linear motion, and the circular motion that the relative heating furnace internal perisporium of removal thermoscope was done is combined, through the detection of first thermocouple, makes in-furnace temperature measuring device can detect the all-round temperature data in the heating furnace. The utility model discloses can carry out comprehensive, lasting, accurate detection to the interior temperature of stove, guarantee the safe high-efficient operation of heating furnace to technical parameter for deep research heating furnace provides reliable basic data.
Description
Technical field
The utility model relates to a kind of device of field of temperature measurement, especially a kind of full section temperature-sensitive detection system.
Background technology
Heating furnace is that the heat that fuel combustion produces is passed to heated medium, and a kind of firing equipment that its temperature is raised, it is widely used in oil-gas gathering and transportation system, crude oil, natural gas and well product thereof are heated to the temperature required by technique, to carry out carrying, sedimentation, separation, dewater and carry out stabilization of crude oil etc.In order to prevent crude oil coking, in the heating furnace of oil well is selected, heating furnace is usually used to carry out indirect to medium.Heating furnace is the device being used for carrying out heating, viscosity reducing to the oil gas of oil well output at oil well site.In the cylindrical shell of heating furnace, installed the parts such as fiery cylinder, smoke pipe, oil coil, they occupy a part of space of cylindrical shell, and what remaining space filled is water, but water can not be filled, at 1/3rd of cylindrical shell.After fuel burns in fiery cylinder, heat to be passed to the water in heating furnace by the heat energy of generation with the heat transfer such as radiation, convection current form, the temperature of water is raised, and components vaporize, water and steam thereof transfer heat to the crude oil in oil coil again, and make oil obtain heat, temperature raises.
At present, the heating heating furnace used in domestic petroleum-gas fiedl and long distance pipeline has tens thousand of, is oil, gas produces and main energy consumption equipment in conveying.But generally speaking, current domestic oil, the heating furnace that gas is produced and used in conveying, overall technology equipment is relatively not high, also a certain distance is there is with international most advanced level, lowly (the average operating thermal efficiency of oil field at home heating furnace is about about 70% to be mainly reflected in hot operational efficiency, and the operating thermal efficiency of external associated heater stove is more than 85%), and automaticity not high (international advanced technology heating furnace safeguard protection and run control etc. in all achieve automation, heating unmanned can be carried out, and China is still manual operation, precision is had a greatly reduced quality, labour's consume is larger) two broad aspect.And if to make a breakthrough in above-mentioned two weak tendencies, first reliable, sufficient, comprehensive Data support will be obtained in the detection of furnace temp, this mainly because: only have to obtain in the unit interval heated medium temperature, fire box temperature etc. accurately, comprehensive basic data, the critical technical parameter such as thermic load, the thermal efficiency could be determined, make corresponding Optimal improvements, also could provide and judge data accurately by auxiliary routine, thus complete, comprehensively and accurately basal temperature data are the prerequisites realizing the safe and effective operation of heating furnace actualizing technology progress.
The heating furnace of domestic prior art is paid attention to not yet fully in temperature detection, and still the general temperature measuring device of many employings carries out artificial thermometric, has obvious inferior position:
First, poor to the continuous surveillance of temperature.Artificial thermometric general at certain time intervals under, thermometric value, cannot obtain successional temperature data, situation and heated medium situation in the grasp stove that cannot continue, not only be difficult to Timeliness coverage problem, and data leak large-spacing is long, Data support cannot be provided for technical optimization.
Secondly, not comprehensive to the detection of temperature.Artificial thermometric generally can only record chimney breast temperature, or the turnover temperature of heated medium, existing part heating furnace is provided with some points for measuring temperature in burner hearth, but because point for measuring temperature is fixed installation, and in stove the variations in temperature of each several part is more greatly and all have Research Significance (to be distributed with coil pipe in stove from top to down, fire cylinder, smoke pipe, and the water of below about 2/3 rises through heating evaporation, cool sinking up again, the variations in temperature of each several part is obvious, and its change all has researching value), therefore the point for measuring temperature be fixedly installed cannot carry out omnibearing detection to in-furnace temperature, comprehensive basal temperature data can not be provided.
Although further, hand-held temperature measuring equipment precision is all up to standard, its link hand-manipulated still exists human error factor, be difficult to avoid there is measure error.
Therefore safety, the Effec-tive Function in order to ensure heating furnace, and actualizing technology optimization and upgrading, be necessary to carry out comprehensively in-furnace temperature, continue, monitor accurately.
Utility model content
The purpose of this utility model is to provide a kind of temperature-sensitive detection system, to overcome above-mentioned the deficiencies in the prior art.By arranging the round circular orbit that axially can move reciprocatingly along heating furnace, and the mobile thermal detector moved in a circle in orbit, more comprehensively in-furnace temperature data can be obtained.
For this reason, the utility model proposes a kind of temperature-sensitive detection system, it comprises:
Temperature measuring equipment in stove, it comprises:
Track, for annular and its external annulus is attached on the internal perisporium of heating furnace, described track can move reciprocatingly along the axis of described heating furnace;
Mobile thermal detector, is installed in the internal ring wall of described track, and described mobile thermal detector can move in a circle along described track; The outside of described mobile thermal detector is provided with the first thermocouple.
Temperature-sensitive detection system described above, wherein, the internal ring wall of described track is provided with the ring guide rail that cross section is T-shaped, and it is the chute of T-shaped that the bottom of described mobile thermal detector offers the cross section matched with described ring guide rail, and described mobile thermal detector is installed on described ring guide rail by described chute.
Temperature-sensitive detection system described above, wherein, the internal ring wall of described ring guide rail is provided with tooth bar, and the inside of described mobile thermal detector is provided with the gear that can be meshed with described tooth bar.
Temperature-sensitive detection system described above, wherein, the inside of described chute is provided with steel ball retainer, and described steel ball retainer is equipped with lubrication steel ball, and described lubrication steel ball rolls with the internal ring wall of described ring guide rail and coordinates.
Temperature-sensitive detection system described above, wherein, the inwall of described heating furnace is axially arranged with at least one straight along it, and the external annulus of described track is provided with the multiple slide blocks matched with described straight, and described slide block is embedded in described straight.
Temperature-sensitive detection system described above, wherein, described first thermocouple is K type thermocouple and is positioned at the outer tip end of described stove temperature measuring equipment.
Temperature-sensitive detection system described above, wherein, described temperature-sensitive detection system also comprises the crude oil temperature measuring equipment of crude oil import and crude exports place being installed in described heating furnace respectively; Described crude oil temperature measuring equipment inside is provided with a unhurried current chamber, the sidewall of described crude oil temperature measuring equipment offers liquid outlet channel and enter liquid passage, described liquid outlet channel with described enter liquid passage be all connected with described unhurried current chamber; The inside in described unhurried current chamber is equiped with the second thermocouple.
Temperature-sensitive detection system described above, wherein, described liquid outlet channel and described enter liquid passage lay respectively at the top of described crude oil temperature measuring equipment and the bottom of described crude oil temperature measuring equipment.
Temperature-sensitive detection system described above, wherein, described liquid outlet channel with described enter the vertical direction in the relative described unhurried current chamber of central axis of liquid passage be obliquely installed.
Temperature-sensitive detection system described above, wherein, described second thermocouple is T-shaped thermocouple and is positioned at the top in described unhurried current chamber.
Feature and the advantage of the temperature-sensitive detection system that the utility model proposes are:
In stove, the track of temperature measuring equipment axially can do linear reciprocating motion along heating furnace, in conjunction with the circular motion that the relative heating furnace internal perisporium of mobile thermal detector does, by the detection of the first thermocouple, thus enable temperature measuring equipment in stove omnibearing temperature data in heating furnace be detected, for grasping situation in stove comprehensively, research and exploitation technological innovation provides strong Data support.Temperature-sensitive detection system of the present utility model can carry out comprehensively in-furnace temperature, continues, detect accurately, ensures heating furnace safe and highly efficient operation, and provides reliable basic data for the technical parameter furtheing investigate heating furnace.
In addition, crude oil temperature measuring equipment is arranged at crude oil import and crude exports place, by the effect of the second thermocouple, inlet temperature and the outlet temperature of heated medium can be obtained, temperature data is made to have continuity, can Timeliness coverage abnormal conditions, and the determination of strong support technology parameter and research.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of temperature measuring equipment in stove of the present utility model;
Fig. 2 is the structural representation of crude oil temperature measuring equipment of the present utility model;
Fig. 3 is using state schematic diagram when temperature measuring equipment is installed in heating furnace in stove of the present utility model;
Fig. 4 is the enlarged schematic partial view of Fig. 3.
Reference numeral illustrates:
Temperature measuring equipment 16 steel ball retainer in 1 stove
11 tracks 17 lubricate steel ball
111 ring guide rail 2 crude oil temperature measuring equipments
112 slide blocks 21 flow slowly chamber
12 move thermal detector 22 liquid outlet channel
121 chutes 23 enter liquid passage
13 first thermocouple 24 second thermocouples
14 tooth bar 3 heating furnaces
15 gear 31 straight
4 motors
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model be described:
Temperature-sensitive detection system of the present utility model comprises: temperature measuring equipment 1 in stove, and as shown in Figure 1, in stove, temperature measuring equipment 1 comprises: track 11, and for annular and its external annulus is attached on the internal perisporium of heating furnace 3, track 11 can move reciprocatingly along the axis of heating furnace 3; Mobile thermal detector 12, is installed in the internal ring wall of track 11, and mobile thermal detector 12 can move in a circle along track 11; The outside of mobile thermal detector 12 is provided with the first thermocouple 13.Track 11 can on the internal perisporium of heating furnace 3, axially linear reciprocating motion is done along it, in conjunction with the circular motion that mobile thermal detector 12 does along relative heating furnace 3 internal perisporium of track 11, by the detection of the first thermocouple 13, thus make temperature measuring equipment 1 in stove omnibearing temperature data in heating furnace 3 can be detected, for grasping situation in stove comprehensively, research and exploitation technological innovation provides strong Data support.Temperature-sensitive detection system of the present utility model can carry out comprehensively in-furnace temperature, continues, detect accurately, ensures heating furnace safe and highly efficient operation, and provides reliable basic data for the technical parameter furtheing investigate heating furnace.
Further, the internal ring wall of track 11 is provided with the ring guide rail 111 that cross section is T-shaped, and the bottom of mobile thermal detector 12 offers the chute 121 that the cross section matched with ring guide rail 111 is T-shaped, and mobile thermal detector 12 is installed on ring guide rail 111 by chute 121.
In a feasible embodiment, the internal ring wall of ring guide rail 111 is provided with tooth bar 14, and the inside of mobile thermal detector 12 is provided with the gear 15 that can be meshed with tooth bar 14.At mobile thermal detector 12 inside installing motor 4, the output shaft of motor 4 is connected with the axle center of gear 15, mobile thermal detector 12 can under the drive of motor 4, run on the rail 11 with engaging of tooth bar 14 by gear 15, thus the inwall along heating furnace 3 of rule carries out circular motion to greatest extent, the temperature data of each position height in stove can being measured, providing comprehensive Data support for grasping situation in stove.
Preferably, the inside of chute 121 is provided with steel ball retainer 16, steel ball retainer 16 is equipped with lubrication steel ball 17, and lubrication steel ball 17 rolls with the internal ring wall of ring guide rail 111 and coordinates.Set steel ball retainer 16 and lubrication steel ball 17, can make the operation of mobile thermal detector 12 relative orbit 11 more steadily smooth, is conducive to reducing interference, improves thermometric precision.
As shown in Figures 3 and 4, the inwall of heating furnace 3 is axially arranged with at least one straight 31 along it, the external annulus of track 11 is provided with the multiple slide blocks 112 matched with straight 31, and slide block 112 is embedded in straight 31.The cross section of straight 31 is be greater than the major arc of 250 degree, track 11 can by the mating reaction of slide block 112 with straight 31, axially rectilinear motion is done along it in heating furnace 3, in conjunction with the circular motion that the relative heating furnace 3 of mobile thermal detector 12 does, thus make temperature measuring equipment 1 in stove omnibearing temperature data in heating furnace 3 can be detected, for grasping situation in stove comprehensively, research and exploitation technological innovation provides strong Data support.
Wherein, the first thermocouple 13 is K type thermocouple and is positioned at the outer tip end of stove temperature measuring equipment 1.The serviceability temperature of K type thermocouple is-200 DEG C ~ 1300 DEG C, has the linearity good, and thermoelectrical potential is comparatively large, and sensitivity is higher, stability and repdocutbility good, non-oxidizability is strong, the advantages such as low price, is applicable to measure the comparatively large and in-furnace temperature of circumstance complication of the temperature difference.
As shown in Figure 2, temperature-sensitive detection system of the present utility model also comprises the crude oil temperature measuring equipment 2 of crude oil import and crude exports place being installed in heating furnace 3 respectively; Crude oil temperature measuring equipment 2 inside is provided with a unhurried current chamber 21, the sidewall of crude oil temperature measuring equipment 2 offers liquid outlet channel 22 and enters liquid passage 23, liquid outlet channel 22 and enter liquid passage 23 and be all connected with chamber 21 of flowing slowly; The inside in unhurried current chamber 21 is equiped with the second thermocouple 24.Crude oil temperature measuring equipment 2 is arranged at crude oil import and crude exports place, by the effect of the second thermocouple 24, inlet temperature and the outlet temperature of heated medium can be obtained, make temperature data have continuity, can Timeliness coverage abnormal conditions, and the determination of strong support technology parameter and research.In addition; to run continuously and heated medium flow is large, increasing extent of temperature is little (being generally about 30 degree), without features such as phase transformations because heating furnace has; import and export fixed point thermometric is carried out in heated medium; consider the changes such as the flow velocity of dynamic field, pressure; the unhurried current chamber 21 that temperature-sensitive detection system of the present utility model is provided with; significantly can alleviate the impulse force of large discharge crude oil in heating furnace inner coil pipe; make crude oil soft slowly through the second thermocouple 24 by Action of Gravity Field; thus the protection realized the second thermocouple 24, and ensure the accurate of temperature measurement data.
Further, liquid outlet channel 22 and enter liquid passage 23 and lay respectively at the top of crude oil temperature measuring equipment 2 and the bottom of crude oil temperature measuring equipment 2.In heating furnace inner coil pipe, large discharge crude oil enters liquid passage 23 by what be positioned at crude oil temperature measuring equipment 2 bottom; enter in the unhurried current chamber 21 of crude oil temperature measuring equipment 2; the bottom of crude oil temperature measuring equipment 2 is positioned at owing to entering liquid passage 23; therefore, it is possible to play cushioning effect to the impulse force of crude oil; enable crude oil slowly through the second thermocouple 24, thus realize the protection to the second thermocouple 24 further.
Preferably, liquid outlet channel 22 vertical direction that flow slowly chamber 21 relative to the central axis entering liquid passage 23 is obliquely installed.Liquid outlet channel 22 and enter liquid passage 23 and adopts the mode be obliquely installed, can alleviate the impulse force of heating furnace inner coil pipe Crude Oil further, make it pass in and out when flowing slowly chamber 21 softer.
Closer, the second thermocouple 24 is T-shaped thermocouple and is positioned at the top in unhurried current chamber 21.T-shaped thermocouple is suitable for the less heated medium of measuring tempeature change, the stability when low temperature and precision better.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.And it should be noted that, each part of the present utility model is not limited in above-mentioned overall applicability, the each technical characteristic described in description of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model covers other relevant with this case utility model point in the nature of things and combines and embody rule.
Claims (10)
1. a temperature-sensitive detection system, is characterized in that, described temperature-sensitive detection system comprises:
Temperature measuring equipment in stove, it comprises:
Track, for annular and its external annulus is attached on the internal perisporium of heating furnace, described track can move reciprocatingly along the axis of described heating furnace;
Mobile thermal detector, is installed in the internal ring wall of described track, and described mobile thermal detector can move in a circle along described track; The outside of described mobile thermal detector is provided with the first thermocouple.
2. temperature-sensitive detection system as claimed in claim 1, it is characterized in that, the internal ring wall of described track is provided with the ring guide rail that cross section is T-shaped, it is the chute of T-shaped that the bottom of described mobile thermal detector offers the cross section matched with described ring guide rail, and described mobile thermal detector is installed on described ring guide rail by described chute.
3. temperature-sensitive detection system as claimed in claim 2, it is characterized in that, the internal ring wall of described ring guide rail is provided with tooth bar, and the inside of described mobile thermal detector is provided with the gear that can be meshed with described tooth bar.
4. temperature-sensitive detection system as claimed in claim 2, it is characterized in that, the inside of described chute is provided with steel ball retainer, and described steel ball retainer is equipped with lubrication steel ball, and described lubrication steel ball rolls with the internal ring wall of described ring guide rail and coordinates.
5. temperature-sensitive detection system as claimed in claim 1, it is characterized in that, the inwall of described heating furnace is axially arranged with at least one straight along it, and the external annulus of described track is provided with the multiple slide blocks matched with described straight, and described slide block is embedded in described straight.
6. temperature-sensitive detection system as claimed in claim 1, it is characterized in that, described first thermocouple is K type thermocouple and is positioned at the outer tip end of described stove temperature measuring equipment.
7. temperature-sensitive detection system as claimed in claim 1, it is characterized in that, described temperature-sensitive detection system also comprises the crude oil temperature measuring equipment of crude oil import and crude exports place being installed in described heating furnace respectively; Described crude oil temperature measuring equipment inside is provided with a unhurried current chamber, the sidewall of described crude oil temperature measuring equipment offers liquid outlet channel and enter liquid passage, described liquid outlet channel with described enter liquid passage be all connected with described unhurried current chamber; The inside in described unhurried current chamber is equiped with the second thermocouple.
8. temperature-sensitive detection system as claimed in claim 7, is characterized in that, described liquid outlet channel and described enter liquid passage lay respectively at the top of described crude oil temperature measuring equipment and the bottom of described crude oil temperature measuring equipment.
9. temperature-sensitive detection system as claimed in claim 7, is characterized in that, described liquid outlet channel with described enter the vertical direction in the relative described unhurried current chamber of central axis of liquid passage be obliquely installed.
10. temperature-sensitive detection system as claimed in claim 7, it is characterized in that, described second thermocouple is T-shaped thermocouple and is positioned at the top in described unhurried current chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520971116.XU CN205227820U (en) | 2015-11-30 | 2015-11-30 | Temperature sensing detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520971116.XU CN205227820U (en) | 2015-11-30 | 2015-11-30 | Temperature sensing detection system |
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| Publication Number | Publication Date |
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| CN205227820U true CN205227820U (en) | 2016-05-11 |
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| CN201520971116.XU Active CN205227820U (en) | 2015-11-30 | 2015-11-30 | Temperature sensing detection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612595A (en) * | 2017-09-29 | 2019-04-12 | 富满仪器与控制设备有限公司 | Thermocouple set with expansion pipe |
| CN110278623A (en) * | 2018-03-15 | 2019-09-24 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetism cooking equipment |
| CN114142363A (en) * | 2021-12-02 | 2022-03-04 | 海南电网有限责任公司信息通信分公司 | Control device for smart power grid |
| CN114353520A (en) * | 2021-12-31 | 2022-04-15 | 高诺(衡阳)铜业有限责任公司 | High-efficiency energy-saving copper refining reverberatory furnace |
-
2015
- 2015-11-30 CN CN201520971116.XU patent/CN205227820U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612595A (en) * | 2017-09-29 | 2019-04-12 | 富满仪器与控制设备有限公司 | Thermocouple set with expansion pipe |
| CN110278623A (en) * | 2018-03-15 | 2019-09-24 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetism cooking equipment |
| CN114142363A (en) * | 2021-12-02 | 2022-03-04 | 海南电网有限责任公司信息通信分公司 | Control device for smart power grid |
| CN114142363B (en) * | 2021-12-02 | 2023-08-18 | 海南电网有限责任公司信息通信分公司 | Control device for smart power grid |
| CN114353520A (en) * | 2021-12-31 | 2022-04-15 | 高诺(衡阳)铜业有限责任公司 | High-efficiency energy-saving copper refining reverberatory furnace |
| CN114353520B (en) * | 2021-12-31 | 2023-09-05 | 高诺(衡阳)铜业有限责任公司 | Efficient and energy-saving copper refining reverberatory furnace |
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