CN201622484U - Point-to-point type thermostat - Google Patents
Point-to-point type thermostat Download PDFInfo
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- CN201622484U CN201622484U CN2010201469786U CN201020146978U CN201622484U CN 201622484 U CN201622484 U CN 201622484U CN 2010201469786 U CN2010201469786 U CN 2010201469786U CN 201020146978 U CN201020146978 U CN 201020146978U CN 201622484 U CN201622484 U CN 201622484U
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- evaporator
- condenser
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Abstract
A point-to-point type thermostat comprises a compressor, a high-low pressure switch, a condenser, a stop valve, a dry filter, an expansion valve, an evaporator, a circulating pump, a bypass valve and an automatic water compensating valve, wherein the water inlet of the condenser is provided with a pressure controller; the water inlet end of the condenser is connected with the automatic water compensating valve and the stop valve respectively; the other end of the stop valve is connected with the dry filter and the expansion valve in series; the high-low pressure switch is connected with the compressor in parallel, and simultaneously, one end of the high-low pressure switch is connected with the water outlet end of the condenser, and the other end of the high-low pressure switch is connected with the expansion valve and the evaporator respectively; the other end of the expansion valve is connected with the evaporator; and one end of the evaporator is connected with the circulating pump. The point-to-point type thermostat also comprises a plurality of groups of sample water thermostat mechanisms that are connected in parallel and then connected with the bypass valve in parallel, wherein each group of sample water thermostat mechanism is formed by a flow regulating valve and a thermostatic cooler which are connected in series. The point-to-point type thermostat has the advantages of being capable of conducting thermostatic and single-point control on the sample water, thus ensuring the precision of measuring instruments.
Description
Technical field
The utility model relates to a kind of point-to-point formula thermostat, belongs to power plant's sample water termostat process field.
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 of sample water is indefinite, and too high temperature all can exert an influence to the measuring accuracy of instrument, and may damage instrument or shorten its serviceable life.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 present thermostat all is the cold and hot exchange that sample water is unified, and the temperature of having ignored when each road sample water carries out constant temperature all is inequality, and the refrigeration intensity that needs is different.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of point-to-point formula thermostat that can carry out constant temperature and single-point control to sample water is provided.
The technical scheme that realizes above-mentioned purpose is: a kind of point-to-point formula thermostat, comprise compressor, high and low voltage switch, condenser, stop valve, device for drying and filtering, expansion valve, evaporator, ebullator, bypass valve and automatic water compensating valve, the water inlet of condenser is equipped with pressure controller, the water inlet end of condenser is connected with stop valve with automatic water compensating valve respectively, the other end of stop valve is connected with device for drying and filtering and expansion valve, high and low voltage switch and compressor parallel, high and low voltage switch one end is connected with the water side of condenser simultaneously, the high and low voltage switch other end is connected with evaporator with expansion valve respectively, the other end of expansion valve is connected with evaporator, one end of evaporator links to each other with ebullator, also comprise the sample water termostat mechanism that many groups are connected in parallel, in parallel with bypass valve again after the parallel connection of sample water termostat mechanism, every group of sample water termostat mechanism is in series by a flow control valve and a constant temperature refrigeratory, the water inlet end of constant temperature refrigeratory is connected with evaporator, and the other end of flow control valve is connected with ebullator.
After adopting technique scheme, chilled water directly carries out heat interchange by the ebullator forced circulation with sample water, has reduced the heat interchange link, has improved heat exchanger effectiveness; It carries heat eliminating medium respectively to the constant temperature refrigeratory of each road sample water respectively by the total pipeline of heat eliminating medium, the flow control valve of on each constant temperature refrigeratory, connecting, scalable refrigeration intensity is to adapt to the setting requirement of sample coolant-temperature gage, fully guaranteed the constant temperature sample water that the chemical analysis instrument is required, and really reached the requirement of the sample coolant-temperature gage being carried out single-point control, thereby the wasting of resources and constant temperature effect that the cold and hot exchange of having avoided the sample water of different temperatures to unify causes are undesirable.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is a control circuit schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, a kind of point-to-point formula thermostat, comprise compressor 1, high and low voltage switch 2, condenser 4, stop valve 5, device for drying and filtering 6, expansion valve 7, evaporator 8, ebullator 9, bypass valve 10 and automatic water compensating valve 13, the water inlet of condenser 4 is equipped with pressure controller 3, the water inlet end of condenser 4 is connected with stop valve 5 with automatic water compensating valve 13 respectively, the other end of stop valve 5 is connected with device for drying and filtering 6 and expansion valve 7, high and low voltage switch 2 and compressor 1 parallel connection, high and low voltage switch 2 one ends are connected with the water side of condenser 4 simultaneously, high and low voltage switch 2 other ends are connected with evaporator 8 with expansion valve 7 respectively, the other end of expansion valve 7 is connected with evaporator 8, one end of evaporator 8 links to each other with ebullator 9, also comprise the sample water termostat mechanism that many groups are connected in parallel, in parallel with bypass valve 10 again after the parallel connection of sample water termostat mechanism, every group of sample water termostat mechanism is in series by a flow control valve 11 and a constant temperature refrigeratory 12, the water inlet end of constant temperature refrigeratory 12 is connected with evaporator 8, and the other end of flow control valve 11 is connected with ebullator 9.
As shown in Figure 2, electric control theory of the present utility model is as follows:
This control circuit adopts the cooperation of microcomputer-recognized intelligent temperature control system, corresponding control loop to reach the self-regulating purpose of sampling point leaving water temperature.System is provided with intelligent temperature sensing device and water delivering orifice motor-operated control valve at each sampling point, and coherent signal is all imported microcomputer-recognized intelligent control system center P LC.Connect primary power, start chilled water pump, cooling water valve successively, panel charging pump run indicator is bright.PLC starts inner automatic control program, and the height pressure of control chilled water, water intaking valve, the unlatching of each sampling point valve of water outlet, the start and stop of compressor make the leaving water temperature of each sampling point reach system's service requirement.Simultaneously the operation troubles signal is reached control panel and drive the corresponding signal pilot lamp.Device has the high-low pressure protection, overcurrent protection, and defencive functions such as anti-frost protection, circuit is simple, and compact conformation is easy to operate, and the high scalability of PLC can satisfy the demand that the different system sampling point increases, control accuracy height fully.
The course of work of the present utility model is as follows:
As shown in Figure 1, chilled water directly carries out heat interchange by ebullator 9 forced circulation with sample water, has reduced the heat interchange link, has improved heat exchanger effectiveness; It carries heat eliminating medium respectively to the constant temperature refrigeratory 12 of each road sample water respectively by the total pipeline of heat eliminating medium, series connection flow control valve 11 on each constant temperature refrigeratory 12, scalable refrigeration intensity is to adapt to the setting requirement of sample coolant-temperature gage, fully guarantee the constant temperature sample water that the chemical analysis instrument is required, and really reached the requirement of the sample coolant-temperature gage being carried out single-point control.
Claims (1)
1. point-to-point formula thermostat, comprise compressor (1), high and low voltage switch (2), condenser (4), stop valve (5), device for drying and filtering (6), expansion valve (7), evaporator (8), ebullator (9), bypass valve (10) and automatic water compensating valve (13), the water inlet of condenser (4) is equipped with pressure controller (3), the water inlet end of condenser (4) is connected with stop valve (5) with automatic water compensating valve (13) respectively, the other end of stop valve (5) is connected with device for drying and filtering (6) and expansion valve (7), high and low voltage switch (2) and compressor (1) parallel connection, high and low voltage switch (2) one ends are connected with the water side of condenser (4) simultaneously, high and low voltage switch (2) other end is connected with evaporator (8) with expansion valve (7) respectively, the other end of expansion valve (7) is connected with evaporator (8), one end of evaporator (8) links to each other with ebullator (9), it is characterized in that: also comprise the sample water termostat mechanism that many groups are connected in parallel, in parallel with bypass valve (10) again after the parallel connection of sample water termostat mechanism, every group of sample water termostat mechanism is in series by a flow control valve (11) and a constant temperature refrigeratory (12), the water inlet end of constant temperature refrigeratory (12) is connected with evaporator (8), and the other end of flow control valve (11) is connected with ebullator (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201469786U CN201622484U (en) | 2010-04-01 | 2010-04-01 | Point-to-point type thermostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201469786U CN201622484U (en) | 2010-04-01 | 2010-04-01 | Point-to-point type thermostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622484U true CN201622484U (en) | 2010-11-03 |
Family
ID=43025943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201469786U Expired - Lifetime CN201622484U (en) | 2010-04-01 | 2010-04-01 | Point-to-point type thermostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201622484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807084A (en) * | 2010-04-01 | 2010-08-18 | 常州江南电力环境工程有限公司 | Point-to-point constant temperature device |
-
2010
- 2010-04-01 CN CN2010201469786U patent/CN201622484U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807084A (en) * | 2010-04-01 | 2010-08-18 | 常州江南电力环境工程有限公司 | Point-to-point constant temperature device |
| CN101807084B (en) * | 2010-04-01 | 2011-08-31 | 常州江南电力环境工程有限公司 | Point-to-point constant temperature device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101103 Effective date of abandoning: 20110831 |