CN103631286B - Temperature control device - Google Patents
Temperature control device Download PDFInfo
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- CN103631286B CN103631286B CN201310705298.1A CN201310705298A CN103631286B CN 103631286 B CN103631286 B CN 103631286B CN 201310705298 A CN201310705298 A CN 201310705298A CN 103631286 B CN103631286 B CN 103631286B
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- casing
- temperature
- water
- pipe
- tank body
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Abstract
The invention relates to a temperature control device. The temperature control device comprises a tank body for containing cooling water and a controller, wherein a vertical partition plate is arranged in the tank body and used for separating the tank body into a first tank body and a second tank body; a first heating device is mounted in the first tank body; a drainage pipe is mounted at the bottom of the first tank body; a water returning pipe and a water supplementing pipe are mounted at the top of the first tank body; a second heating device is mounted in the second tank body; an overflow pipe is mounted at the upper part of the side wall of the second tank body; a water supply pipeline is mounted at the lower part of the second tank body; the drainage pipe and the overflow pipe are connected to a water discharging pipe. According to a temperature control range of a cooling water tank needed in an experiment, the characteristic of abundant industrial water resources in a power plant is fully utilized, and circulating cooling water is directly cooled by a method of injecting normal-temperature water. Compared with a conventional cooling water tank, the tank body has the advantage that a compressor is omitted, so that the space is saved.
Description
Technical field
The present invention relates to control field, particularly relate to a kind of for the temperature regulating device in power plant's tail flue gas local heat transfer.
Background technology
Cooling water tank belongs to the conventional instrument and equipment of industrial circle and scientific research field, needs the occasion of accurate controlled cooling model procedure parameter at some, as in the cavity cooling of laser instrument or some scientific experiment, usually needs the chilled water passing into temperature constant in cooling tube.
Conventional cooling water tank generally has two features: one, chilled water generally recycles, need to lower the temperature to chilled water, the method of cooling uses cooling device often, as compressor cooling or heat interchanger cooling, but, the general volume ratio of these cooling devices is comparatively large, uses extra cooling device to make the water tank natively needing to take very large space heavier, is not suitable for very much using in the place of narrow space; Two, the occasion of chilled water being carried out to accurate temperature controlling is being needed, usual employing be closed loop control method in automatically controlling, this needs the complexity increasing circuit design and control operation on the one hand, on the other hand due to environmental change, need the various setup parameters adjusted in real time to ensure the accuracy of temperature control.
Figure 1 shows that cooling water tank of the prior art, this cooling water tank uses fan blower and air pump to coordinate and cools chilled water, this cooling water tank needs extra air-blast device and air extractor, increases the volume of cooling water tank, does not possess the function of accurate controlled cooling model coolant-temperature gage simultaneously.
At present, in the research heat transfer characteristic of boiler tail flue gas and the experiment of corrosive property, in order to study the impact of heat interchanger wall temperature heat exchanger heat exchange property, need to control heat interchanger wall temperature by the temperature of accurate controlled cooling model water.In this experiment, because boiler tail flue gas complicated component, temperature are high, simulated experiment platform difficulty is built in laboratory, so experiment mainly completes in the actual motion environment of power plant, experiment condition is subject to a lot of restriction.Generally closely, operating space is narrow and small for the layout of such as power plant, and the conventional cooling water tank with compressor is not suitable for this workplace; Power plant's experiment condition is simple and crude on the other hand, and environment is noisy, and experimenter wishes to use simple control method as far as possible to complete experiment.
Summary of the invention
The object of the invention is to overcome the problems referred to above, a kind of temperature regulating device is provided, experimentally needs, for the particular surroundings of power plant, be applicable to the experiment cooling water tank used in power plant.
The technical solution used in the present invention:
A kind of temperature regulating device, comprise the casing and controller of containing chilled water, be provided with vertical clapboard in casing and casing be separated into the first casing and the second casing, be provided with first heater in first casing, bottom is provided with leak-off pipe, and top is provided with return pipe and filling pipe, in second casing, secondary heating mechanism is installed, the top of the second wall box is provided with run-down pipe, and bottom is provided with water supply line, and leak-off pipe is all connected with drainpipe with run-down pipe.
The volume of the first described casing is greater than the volume of described second casing, and particularly, the volume of the first casing is the twice of the volume of described second casing.The power of described first heater is greater than the power of described secondary heating mechanism, and particularly, the power of described first heater is 4KW, and the power of described secondary heating mechanism is 1KW.
The first described casing communicates above vertical clapboard with the second casing, and described run-down pipe is positioned at the sidewall top position of the second casing and it is highly lower than the height of vertical clapboard, thus the water uniaxially in the first casing is flowed in the second casing.
Described vertical clapboard is provided with the first temperature sensor of water temperature in survey first casing, described water supply line inside is provided with the second temperature sensor surveying water supply water temperature.
Described first temperature sensor is positioned at the top of described vertical clapboard.
Described water supply line is provided with the first variable valve and water pump, described filling pipe is provided with the second variable valve, described leak-off pipe is provided with the 3rd variable valve.Each temperature sensor and heating arrangement are connected with controller, are controlled by the controller.
Water supply line is outwards supplied water by water pump.
The beneficial effect that the present invention compared with prior art has:
1) in the power plant's local heat transfer that the present invention relates to, the temperature range of required chilled water is 40 DEG C-80 DEG C, for this temperature control scope, the present invention takes full advantage of the feature of power plant's industry abundant water, the direct method injecting normal-temperature water that uses cools recirculated cooling water, compare traditional cooling water tank and decrease compressor, save space, be suitable for carrying out field experiment use in power plant.
2) waterbox design is two body structures by the present invention, adopt the design of two-stage temperature control, use high power heater coarse adjustment temperature in large casing, low-power heating device is used to finely tune temperature in small box, ensure that temperature control efficiency and temperature-controlled precision simultaneously, namely control method without the need to complexity can realize accurate temperature controlling, and error reaches within 1 DEG C.
Accompanying drawing explanation
Fig. 1 is existing cooling water tank schematic diagram;
Fig. 2 is the schematic diagram of temperature regulating device in the embodiment of the present invention;
Fig. 3 is the schematic diagram of embodiment of the present invention middle controller.
Wherein, 1. casing, 2. controller, 3. vertical clapboard, 41. water supply lines, 42. return pipes, 43. filling pipes, 44. drainpipes, 441. leak-off pipes, 442. run-down pipes, 51. first heaters, 52. secondary heating mechanisms, 61. first variable valve, 62. second variable valve, 63. the 3rd variable valve, 71. first temperature sensors, 72. second temperature sensor, 8. water pumps, 11. first casings, 12. second casings, 21. power supplys, 221. first temperature controllers, 222. second temperature controllers, 231. first relays, 232. second relays.
Embodiment
Further illustrate below in conjunction with embodiment.
Embodiment 1
As shown in Figure 2, the temperature regulating device that the present embodiment provides comprises casing 1 and controller 2, wherein, described casing 1 is separated into the first casing 11 and the second casing 12 by vertical clapboard 3, in described first casing 11, first heater 51 is installed, the top of described first casing 11 is provided with return pipe 42 and filling pipe 43, the bottom of described first casing is provided with leak-off pipe 441, in described second casing, secondary heating mechanism 52 is installed, the sidewall of described second casing is provided with run-down pipe 442 and water supply line 41, described leak-off pipe 441 is all connected to drainpipe 44 with described run-down pipe 442.
The volume of the first casing 11 is greater than the volume of described second casing 12, and particularly, the volume of the first casing 11 is twices of the volume of described second casing 12.The power of first heater is greater than the power of described secondary heating mechanism, and particularly, the power of described first heater is 4KW, and the power of described secondary heating mechanism is 1KW.
Run-down pipe 442 is positioned at the sidewall top position of described second casing and it is highly lower than the height of described vertical clapboard 3, thus the water uniaxially in the first casing is flowed in the second casing.
Water supply line 41 is positioned at the position close to bottom below described second wall box, is externally supplied water by water pump 8.
The top of vertical clapboard 3 is provided with the first temperature sensor 71, and for measuring the water temperature in the first casing 11, described water supply line 41 inside is provided with the second temperature sensor 72.Water supply line 41 is provided with the first variable valve 61 and water pump 8, described filling pipe 43 is provided with the second variable valve 62, described leak-off pipe 441 is provided with the 3rd variable valve 63.Each sensor and heating arrangement are connected with controller 2, are controlled by the controller.
Embodiment 2
As shown in Figure 3, temperature regulating device comprises casing 1, described casing 1 is separated into the first casing 11 and the second casing 12 by vertical clapboard 3, in described first casing 11, first heater 51 is installed, the top of described first casing 11 is provided with return pipe 42 and filling pipe 43, the bottom of described first casing is provided with leak-off pipe 441, in described second casing, secondary heating mechanism 52 is installed, the sidewall of described second casing is provided with run-down pipe 442 and water supply line 41, described leak-off pipe 441 is all connected to drainpipe 44 with described run-down pipe 442.
The volume of the first casing 11 is greater than the volume of described second casing 12, and particularly, the volume of the first casing 11 is twices of the volume of described second casing 12.The power of first heater is greater than the power of described secondary heating mechanism, and particularly, the power of described first heater is 4KW, and the power of described secondary heating mechanism is 1KW.
Run-down pipe 442 is positioned at the sidewall top position of described second casing and it is highly lower than the height of described vertical clapboard 3, thus the water uniaxially in the first casing is flowed in the second casing.
Water supply line 41 is positioned at the position close to bottom below described second wall box, is externally supplied water by water pump 8.Each sensor and heating arrangement are connected with controller.
The first temperature controller 221 that the controller that the two-stage cooling water tank that the present embodiment provides uses comprises power supply 21, is connected with described first temperature sensor 71, the second temperature controller 222 be connected with described second temperature sensor 72, described first temperature controller 221 controls the work of described first heater 51 by the first relay 231, described second temperature controller controls described secondary heating mechanism 52 by the second relay 232 and works.
In the present embodiment, cooling water tank is used for boiler exhaust gas local heat transfer, provides the chilled water of 55 DEG C to heat exchanger tube.Heat exchanger tube is arranged in the flue after boiler air preheater, this section of flue gas in flue temperature is between 110-140 DEG C, by measuring the parameters such as such as inflow temperature, leaving water temperature, cooling water flow, observation heat exchanger tube temperature, seek the impact of the pipe surface temperature exchange heat pipe heat exchange property of the heat exchanger tube being arranged in boiler exhaust gas.
The course of work of water tank is as follows:
Heating period, close the 3rd variable valve 63, first variable valve 61 and water pump 8, in water tank, fill water by moisturizing pipeline, the control temperature of the first temperature controller 221 and the second temperature controller is set as 52 DEG C, heat the chilled water to 52 DEG C in the first casing 11 and the second casing 12.
Working stage, is set as 53 DEG C by the control temperature of the first temperature controller 221, and the control temperature of the second temperature controller 222 is set as 55 DEG C, opens the first variable valve 61 and water pump 8.By regulating the flow of inlet water of the aperture controlled cooling model water of the first variable valve 61, the heat transfer characteristic of tube wall under various heat exchange amount can be observed.By the flow of the design temperature and filling pipe 43 that change the first temperature controller 221, second temperature controller 222, the water temperature that can control constant temperature water tank works between 40-80 DEG C.
Ending phase, first closes the second variable valve 62, opens the water in emptying first casing 11 of the 3rd variable valve 63, and after the water in the second casing 12 is drained by water pump 8, switch off the pump 8 and first variable valve 61.
Claims (5)
1. a temperature regulating device, comprise the casing and controller of containing chilled water, it is characterized in that, be provided with vertical clapboard in casing and casing be separated into the first casing and the second casing, in the first casing, first heater is installed, bottom is provided with leak-off pipe, top is provided with return pipe and filling pipe, is provided with secondary heating mechanism in the second casing, and the top of the second wall box is provided with run-down pipe, bottom is provided with water supply line, and leak-off pipe is all connected with drainpipe with run-down pipe.
2. a kind of temperature regulating device according to claim 1, it is characterized in that, described dividing plate is provided with the first temperature sensor of water temperature in survey first casing, described water supply line inside is provided with the second temperature sensor surveying water supply water temperature, described water supply line is provided with the first variable valve and water pump, described filling pipe is provided with the second variable valve, described leak-off pipe is provided with the 3rd variable valve, each temperature sensor and heating arrangement are connected with controller.
3. a kind of temperature regulating device according to claim 2, it is characterized in that, controller comprises power supply, the first temperature controller be connected with the first temperature sensor, the second temperature controller of being connected with the second temperature sensor, first temperature controller is by the first Control first heater, and the second temperature controller is by the second Control secondary heating mechanism.
4. a kind of temperature regulating device according to claim 1, is characterized in that, the volume of the first described casing is greater than the volume of described second casing.
5. a kind of temperature regulating device according to claim 1, is characterized in that, the power of described first heater is greater than the power of described secondary heating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310705298.1A CN103631286B (en) | 2013-12-19 | 2013-12-19 | Temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310705298.1A CN103631286B (en) | 2013-12-19 | 2013-12-19 | Temperature control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103631286A CN103631286A (en) | 2014-03-12 |
| CN103631286B true CN103631286B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310705298.1A Expired - Fee Related CN103631286B (en) | 2013-12-19 | 2013-12-19 | Temperature control device |
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| Country | Link |
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| CN (1) | CN103631286B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914891A (en) * | 2015-06-04 | 2015-09-16 | 北京自动化技术研究院 | Cooling control system for temperature control device |
| CN105373160A (en) * | 2015-11-13 | 2016-03-02 | 通用国际企业有限公司 | Liquid heating system and method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173967Y (en) * | 1993-11-30 | 1994-08-10 | 曹振寿 | Circulating water temp. controller |
| CN101275872A (en) * | 2008-04-24 | 2008-10-01 | 庄瑞国 | Automatic constant temperature fluid bath |
| CN203338170U (en) * | 2013-07-02 | 2013-12-11 | 福建兴宇树脂有限公司 | Automatic thermostat |
| CN203606707U (en) * | 2013-12-19 | 2014-05-21 | 山东大学 | Temperature control apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2492003C (en) * | 2001-11-15 | 2013-03-19 | Synapse, Inc. | System and method for controlling temperature of a liquid residing within a tank |
-
2013
- 2013-12-19 CN CN201310705298.1A patent/CN103631286B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173967Y (en) * | 1993-11-30 | 1994-08-10 | 曹振寿 | Circulating water temp. controller |
| CN101275872A (en) * | 2008-04-24 | 2008-10-01 | 庄瑞国 | Automatic constant temperature fluid bath |
| CN203338170U (en) * | 2013-07-02 | 2013-12-11 | 福建兴宇树脂有限公司 | Automatic thermostat |
| CN203606707U (en) * | 2013-12-19 | 2014-05-21 | 山东大学 | Temperature control apparatus |
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| CN103631286A (en) | 2014-03-12 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wei Wei Inventor after: Zhang Xiangyu Inventor after: Shi Yuetao Inventor after: Cheng Shen Inventor after: Sun Fengzhong Inventor before: Shi Yuetao Inventor before: Zhang Xiangyu |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SHI YUETAO ZHANG XIANGYU TO: WEI WEI ZHANG XIANGYU SHI YUETAO CHENG SHEN SUN FENGZHONG |
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Granted publication date: 20150715 Termination date: 20171219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |