CN203191845U - Automatic thermostatic device of condensed water sampling system - Google Patents
Automatic thermostatic device of condensed water sampling system Download PDFInfo
- Publication number
- CN203191845U CN203191845U CN 201320127989 CN201320127989U CN203191845U CN 203191845 U CN203191845 U CN 203191845U CN 201320127989 CN201320127989 CN 201320127989 CN 201320127989 U CN201320127989 U CN 201320127989U CN 203191845 U CN203191845 U CN 203191845U
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- water
- condenser
- evaporator
- pressure controller
- refrigeration compressor
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Abstract
The utility model discloses an automatic thermostatic device of a condensed water sampling system. The device comprises a refrigeration compressor (9), a high/low pressure controller (8), a condenser (1), an evaporator (7), a thermostatic water tank (12) and the like. A water inlet/outlet side of the condenser is configured with a pressure difference controller (2); an outlet of the condenser (1) is sequentially connected with a stop valve (4), a drying filter (5) and an expansion valve (6); the high/low pressure controller (8) and the refrigeration compressor (9) are connected in parallel, and the high/low pressure controller (8) is respectively connected with an inlet of the condenser (1), the expansion valve (6) and the evaporator (7); the evaporator is respectively connected with the expansion valve (6) and a circulation pump (10); a water inlet end of the thermostatic water tank (12) is connected with a flow regulating valve (11) and the circulation pump (10), a water outlet end of the thermostatic water tank (12) is connected with the evaporator (7), and the thermostatic water tank (12) is provided with an electric heater (13) and a temperature sensing device (14); and a corresponding signal is input to a PLC. The device is equipped with high/low voltage protection and cooling water cut-off protection, ensures stable work of a system, can cool and heat sample water and is suitable for making sample water of different temperatures of a condensed water system thermostatic.
Description
Technical field
The utility model relates to a kind of condensate water sampling system automatic thermostatic device, is applied to power plant condensation water system sample water termostat.
Background technology
Power plant all needs the water quality of the various water of its use is carried out sample detecting, generally can adopt instrument to monitor automatically, but the temperature from each point sample water in the system is indefinite, too high temperature can exert an influence to the measuring accuracy of instrument, and may damage instrument or shorten its serviceable life, and the price that generally is used for the sampling instrument of sample water monitoring does not all wait to hundreds of thousands at several ten thousand yuan, in case the damage meeting brings very big economic loss to factory.This will all carry out constant temperature to the sample water that is provided with the instrument measuring point, to guarantee the degree of accuracy of measurement instrument.But existing thermostat all is the cold and hot exchange that sample water is unified, temperature when having ignored different system sample water termostat is different, the refrigeration intensity that needs is also different, water sample to different sampling point different temperatures is difficult to accurate control, cause shorten even damage the serviceable life of expensive instrument, have a strong impact on system's effluent characteristics.The running quality of chemical analysis instrument directly is subjected to the influence of sample coolant-temperature gage to a certain extent, and the specified sample coolant-temperature gage (25 ℃) of standard is the desirable index that chemical steam process analysis procedure analysis in service is pursued always.Especially index such as water electric conductivity, pH value has only unification just to have comparability with the measured value under 25 ℃ of conditions.
Thermostat in the past all is the cold and hot exchange of unifying to the sample water of different temperatures, causes water resource waste on the one hand, and on the other hand, the constant temperature effect of sampling point is undesirable.The utility model, chilled water is by the ebullator forced circulation, directly carry out heat interchange with sample water, reduced the heat interchange link, improved heat exchanger effectiveness, be connected with flow control valve at each constant temperature water tank, adjustable restraining cold strength has fully guaranteed the constant temperature sample water that the chemical analysis instrument is required to adapt to the setting requirement of sample coolant-temperature gage.In addition also have the following advantages:
Adopt PLC to cooperate corresponding control loop can carry out the auto-programming adjusting to reach the sampling point leaving water temperature, satisfied the not constant temperature needs of same water of different system;
Sample coolant-temperature gage range of control is accurate, and is constant in 25 ℃ ± 1 ℃;
This device is provided with high-low pressure protection, chilled water water cut-off protection, has guaranteed the steady operation of system.
Summary of the invention
The utility model relates to a kind of constant condensate water sampling system automatic thermostatic device of power plant condensation water sample coolant-temperature gage that is applied to, comprise refrigeration compressor, dual-pressure controller, condenser, evaporator, constant temperature water tank etc., the Inlet and outlet water side of described condenser disposes differential pressure controller; Described condensator outlet links to each other with stop valve, device for drying and filtering and expansion valve successively; Described dual-pressure controller and refrigeration compressor parallel connection, dual-pressure controller are connected with expansion valve and evaporator with the import of condenser respectively; Described evaporator links to each other with ebullator with expansion valve respectively; Described constant temperature water tank water inlet end connection traffic variable valve, ebullator, the water side is connected with evaporator, and is provided with electrical heating and temperature sensing device, coherent signal input PLC.The chilled water of described condenser is squeezed into by cooling-water pump; the homonymy that carries out being intake by condenser after the heat interchange with high-temperature steam goes out; the Inlet and outlet water side disposes differential pressure controller, when the condenser cooling water inlet outlet pressure differential is lower than setting value (cooling water flow is less than normal), and the device automatic shutdown protection.
Described constant temperature water tank water inlet end connection traffic variable valve, ebullator, restraining cold strength that flow control valve is adjustable has fully guaranteed the constant of sample coolant-temperature gage to adapt to the setting requirement of sample coolant-temperature gage; The water side is connected with evaporator; Constant temperature oven also has electrical heating and temperature sensing device, prescribes a time limit when temperature is lower than under the design temperature, and temperature sensor is imported PLC with coherent signal, and PLC starts electrical heating.
The utility model, chilled water is by the ebullator forced circulation, directly carry out heat interchange with sample water, reduced the heat interchange link, improved heat exchanger effectiveness, be connected with flow control valve at each constant temperature water tank, adjustable restraining cold strength has fully guaranteed the constant temperature sample water that the chemical analysis instrument is required to adapt to the setting requirement of sample coolant-temperature gage.PLC starts inner automatic control program, and the unlatching of height pressure, water intaking valve and the sampling point valve of control chilled water, the start and stop of compressor make the leaving water temperature of each sampling point reach system's service requirement.Manually, automatic function switches simply, easy to operate, the high scalability of PLC can satisfy the demand of different system sampling point constant temperature, control accuracy height fully.Sample coolant-temperature gage range of control is accurate, and is constant in 25 ℃ ± 1 ℃.This device is provided with high-low pressure protection, chilled water water cut-off protection, has guaranteed the steady operation of system, and this device can be lowered the temperature to sample water, also can heat sample water, is applicable to the condensate system sample water termostat of various different temperatures.
Description of drawings
Accompanying drawing 1 is device synoptic diagram of the present utility model;
Among the figure: 1, condenser; 2, differential pressure controller; 3, cooling-water pump; 4, stop valve: 5, device for drying and filtering; 6, expansion valve; 7, evaporator; 8, dual-pressure controller; 9, refrigeration compressor; 10, ebullator; 11, flow control valve; 12, constant temperature water tank; 13, electrical heating; 14, temperature sensing device.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to accompanying drawing, mainly by refrigeration compressor 9, dual-pressure controller 8, condenser 1, evaporator 7, constant temperature water tank 12 etc., the Inlet and outlet water side of described condenser 1 disposes differential pressure controller 2 for it; Described condensator outlet links to each other with stop valve 4, device for drying and filtering 5 and expansion valve 6 successively; Described dual-pressure controller 8 and refrigeration compressor 9 parallel connections, dual-pressure controller 8 are connected with expansion valve 6 and evaporator 7 with the import of condenser 1 respectively; Described evaporator 7 links to each other with ebullator 10 with expansion valve 6 respectively; Described constant temperature water tank 12 water inlet end connection traffic variable valve 11, ebullator 10, the water side is connected with evaporator 7, and is provided with electrical heating 13, temperature sensing device 14, and coherent signal input PLC is by the operation of PLC control total system.
Principle of work: refrigeration compressor is discharged high temperature refrigerant steam, high-temperature steam carries out heat interchange in condenser inside with chilled water, the refrigerant liquid that condenser comes out is temperature at 0 to 5 ℃ supercooled liquid, device for drying and filtering carries out filtering, dehumidifying to the cold-producing medium that flows to be handled, expansion valve reduces pressure to cold-producing medium, directly control enters the refrigerant flow of evaporator, the cold-producing medium acting of in evaporator, absorbing heat, reduce the thermostatical circulating water temperature, when the thermostatical circulating water temperature was higher than upper limit set value (25 ± 1 ℃ of TWS), refrigeration compressor started, and freezes, when thermostatical circulating water is lower than lower limit set value, starts electrical heating and heat.
The utility model device is adjustable restraining cold strength and electrical heating have fully guaranteed required constant temperature sample water to adapt to the setting requirement of sample coolant-temperature gage.Adopt PLC to cooperate corresponding control loop can carry out the auto-programming adjusting to reach the sampling point leaving water temperature, satisfied the not constant temperature needs of same water of different system, and the sample coolant-temperature gage can be controlled accurately at 25 ± 1 ℃.Have practical, safe and reliable, simple to operate.The control accuracy advantages of higher.
Claims (1)
1. condensate water sampling system automatic thermostatic device that is used for power plant, comprise refrigeration compressor (9), dual-pressure controller (8), condenser (1), evaporator (7), constant temperature water tank (12) etc., it is characterized in that: the Inlet and outlet water side of described condenser (1) disposes differential pressure controller (2), when the condenser cooling water inlet outlet pressure differential is lower than setting value, be that cooling water flow is less than normal, the device automatic shutdown protection; Described dual-pressure controller (8) and refrigeration compressor (9) parallel connection, when the exhaust of refrigeration compressor exceeds the scope of setting, the auto-stopper operation; Described constant temperature water tank (12) water inlet end connection traffic variable valve (11), ebullator (10), the water side is connected with evaporator (7), and be provided with temperature sensing device (13), coherent signal input PLC, the bound that exceeds setting when temperature, automatically start refrigeration compressor and electrical heating, realize the constant temperature of sample water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127989 CN203191845U (en) | 2013-03-20 | 2013-03-20 | Automatic thermostatic device of condensed water sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127989 CN203191845U (en) | 2013-03-20 | 2013-03-20 | Automatic thermostatic device of condensed water sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203191845U true CN203191845U (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320127989 Expired - Fee Related CN203191845U (en) | 2013-03-20 | 2013-03-20 | Automatic thermostatic device of condensed water sampling system |
Country Status (1)
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| CN (1) | CN203191845U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713672A (en) * | 2013-09-23 | 2014-04-09 | 江苏博大环保股份有限公司 | Constant temperature optimization control system of microbial reaction tank |
| CN105388929A (en) * | 2015-12-08 | 2016-03-09 | 东北电力大学 | Fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment |
| CN110442118A (en) * | 2019-09-03 | 2019-11-12 | 郑州赛奥电子股份有限公司 | Winding temperature controller calibration equipment and its thermostatic bath system |
-
2013
- 2013-03-20 CN CN 201320127989 patent/CN203191845U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713672A (en) * | 2013-09-23 | 2014-04-09 | 江苏博大环保股份有限公司 | Constant temperature optimization control system of microbial reaction tank |
| CN103713672B (en) * | 2013-09-23 | 2017-02-22 | 江苏博大环保股份有限公司 | Constant temperature optimization control system of microbial reaction tank |
| CN105388929A (en) * | 2015-12-08 | 2016-03-09 | 东北电力大学 | Fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment |
| CN110442118A (en) * | 2019-09-03 | 2019-11-12 | 郑州赛奥电子股份有限公司 | Winding temperature controller calibration equipment and its thermostatic bath system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20140320 |