CN203657141U

CN203657141U - Ambient temperature compensation controller

Info

Publication number: CN203657141U
Application number: CN201320393642.3U
Authority: CN
Inventors: 程泽强; 吴海城
Original assignee: Beijing Shuai An Energy-Saving Equipment Co Ltd
Current assignee: Beijing Shuai An Energy-Saving Equipment Co Ltd
Priority date: 2013-07-04
Filing date: 2013-07-04
Publication date: 2014-06-18
Anticipated expiration: 2023-07-04

Abstract

The utility model provides an ambient temperature compensation controller. According to the ambient temperature compensation controller, a curve can be generated conveniently based on a change value of the ambient temperature and a secondary heat supply network supply water temperature value, a controlled electric three-way converging valve is controlled with a PID (proportion integration differentiation) algorithm, automatic compensation control of the secondary heat supply network supply water temperature along with the ambient temperature change is achieved, reasonable secondary heat supply network heat extraction of a heat exchange station is achieved under the condition that the secondary heat supply network flow is unchanged, and energy is saved.

Description

Ambient temperature compensation controller

Affiliated technical field:

The utility model relates to a kind of energy saver for heat exchange station unit heating system.

Background technology:

At present, the urban district heating system of absolutely large portion is all to adopt in each community, unit and factory set up heat exchange station, the heat of heating plant is fed to each community by secondary cycle pump after heat exchanger heat exchange, unit and factory, because each heat exchange station is in the time designing, designing unit is all generally the heat exchange area that amplifies heat exchanger, avoid affecting heat transfer effect because of incrustation in heat exchanger, to guarantee that district heating that this heat exchange station is supplied can reach the indoor temperature standard of national regulation, but designing unit does not generally consider the requirement of variation of ambient temperature exchange heat, the heat that when environment temperature is high, building consumes is relatively few, the heat that when environment temperature is low, building consumes is bigger than normal, therefore this design causes and actual changes heat waste because of what variation of ambient temperature caused.

Summary of the invention:

In order to overcome existing heat exchange station heat exchange pattern, reduce the waste of heat, the utility model provides a kind of ambient temperature compensation controller, this ambient temperature compensation controller provides a kind of can conveniently realization that the changing value of environment temperature and secondary heat supply network supply water temperature value are generated to a curve, by the controlled electric three passes converging valve of pid algorithm control, realize the auto-compensation control of secondary heat supply network supply water temperature with variation of ambient temperature, in the situation that not changing secondary heat supply network flow, realize the reasonable heat-obtaining of heat exchange station secondary heat supply network, save the energy.

The utility model comprises: ambient temperature compensation controller, electric three passes converging valve, outdoor temperature sensor, environment temperature sensor, one secondary net supply water temperature sensor, one secondary net return water temperature sensor, secondary heat supply network supply water temperature sensor, secondary heat supply network return water temperature sensor, ambient temperature compensation controller can PLC or other singlechip controller, by AI input circuit respectively with environment temperature sensor, indoor temperature transmitter, one secondary net supply water temperature sensor, one secondary net return water temperature sensor, secondary heat supply network supply water temperature sensor, secondary heat supply network return water temperature sensor connects, be connected with electric three passes converging valve by AO output circuit.In the time that the environment temperature detecting changes, ambient temperature compensation controller is according to the compensation control curve of setting, determine secondary heat supply network water supply theoretical temperatures suitable under current environmental temperature, and this value and the actual secondary heat supply network supply water temperature value that detects are compared, output action signal accordingly, by the regulation of pid algorithm control electric three passes converging valve, make secondary heat supply network supply water temperature meet the theoretical temperatures of setting.

The beneficial effects of the utility model are, 1, user can carry out setup parameter easily according to the architectural character of the heating unit of oneself.2, according to the environment temperature of user's setup parameter and collection, to obtain appropriate secondary heat supply network supply water temperature value, regulate electric three passes converging valve Ji degree to control secondary heat supply network supply water temperature by output signal, reach energy-conservation object.3, ambient temperature compensation controller has gathered supply water temperature, the return water temperature of a secondary net simultaneously, can facilitate user to observe the difference variation of one secondary net when ambient temperature compensation controller is energy-conservation to be regulated.4, select electric three passes converging valve to guarantee that valve body is under any state, the total flow of secondary heat supply network can not change.

Accompanying drawing explanation:

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is theory diagram of the present utility model.

Fig. 2 is control logic figure of the present utility model.

Fig. 3 is the energy-conservation tracing analysis figure of ambient temperature compensation controller.

1. ambient temperature compensation controllers in figure, 2. environment temperature sensor, 3. indoor temperature transmitter, 4. electric three passes converging valve, 5. two heat supply network supply water temperature sensors, 6. two heat supply network feed pipes, 7. two heat supply network return water temperature sensors, 8. two pumps for hot water supply net, 9. two heat supply network return pipes, 10. heat exchanger, 11. 1 secondary net supply water temperature sensors, 12. 1 secondary net feed pipes, 13. 1 secondary net return water temperature sensors, 14. 1 secondary net return water temperature sensors, dotted line is control connection line.

The specific embodiment:

As shown in Figure 1, ambient temperature compensation controller (1) by control circuit respectively at being installed on outdoor environment temperature sensor (2), be installed on the indoor temperature transmitter (3) of indoor side amount indoor temperature, be installed on the supply water temperature sensor (11) on a secondary net feed pipe, be installed on the return water temperature sensor (12) on a secondary net return pipe, be installed on the supply water temperature sensor (5) on secondary heat supply network feed pipe, be installed on the return water temperature sensor (7) on secondary heat supply network return pipe, and the electric three passes converging valve (4) for regulating secondary heat supply network supply water temperature being arranged on secondary heat supply network feed pipe connects, composition linked system.

As shown in Figure 2, ambient temperature compensation controller (1) is by setting secondary water-supply temperature and outdoor environment temperature theory of correspondences temperature curve value T, by Real-time Collection outdoor environment temperature (2), Real-time Collection secondary heat supply network supply water temperature value T21 simultaneously, in the time detecting that T21 equals T, keep electric three passes converging valve (4) aperture constant.In the time detecting that T21 is greater than T, reduce electric three passes converging valve (4) aperture, otherwise, in the time that T21 is less than T, increase electric three passes converging valve (4) aperture, until T21 while equaling T, keeps electric three passes converging valve (4) aperture constant.

As shown in Figure 3, according to user's architectural character, by setting secondary heat supply network supply water temperature theoretical value corresponding to several outdoor environment temperature values, through the difference arithmetic computing in ambient temperature compensation controller, automatically build environment temperature compensation curve, by this ambient temperature compensation curve, can realize ambient temperature compensation controller the enforcement of secondary water-supply temperature is regulated, reach the hot object of reasonable use, realize target for energy-saving and emission-reduction.

Claims

1. an ambient temperature compensation controller, be master controller by PLC, be connected with environment temperature sensor, indoor temperature transmitter, a secondary net supply water temperature sensor, a secondary net return water temperature sensor, secondary heat supply network supply water temperature sensor, secondary heat supply network return water temperature sensor respectively by AI input circuit, be connected with electric three passes converging valve by AO output circuit.