CN2921659Y

CN2921659Y - Hot water boiler heat supply system energy-saving control device

Info

Publication number: CN2921659Y
Application number: CNU2006201245312U
Authority: CN
Inventors: 全洪波
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-29
Filing date: 2006-06-29
Publication date: 2007-07-11
Anticipated expiration: 2016-06-29

Abstract

The ''hot water boiler heat supply system energy-saving control device'', by that a bypass pipeline is communicated between the water supply main pipe in the heat supply boiler house and the backwater pipeline; an electric drive valve that can adjust the flow is additionally arranged in the middle of the bypass pipeline; and the action of the valve is acted by the programme designed by the computer; achieves the control over the temperature change in the water supply according to the change in the building thermal load corresponding to the weather temperature. A bypass pipeline is additionally mounted between the hot water supply outlet pipeline of the boiler and the cold return pipeline of the boiler in the boiler house, wherein the bypass pipeline additionally mounted has a valve, a cut-off valve and a water pump; the rotating speed of the water pump is controlled by a frequency conversion speed regulator, and the operating signal of the frequency conversion speed regulator runs by the computer according to the high or low backwater temperature.

Description

The hot-water boiler heating system energy-saving regulation-control device

Technical field

The utility model relates in combustion gas, fire coal, oil burning boiler heating system, effectively improves the thermal efficiency of boiler, regulates the required temperature flow of boiler blow-down water fast and accurately.

Background technology

In hot-water boiler heating system, the pipe network circulatory system of heating system is made of boiler, water circulating pump, heat exchanger secondary cycle water pump, a various pipe fitting at present.System is sent to the low once circulation of distinguishing heating user radiator, high district heat exchanger through every boiler respectively after backwater is pressurizeed heat medium water by water pump when operation, circulates.

Under desirable waterpower distribution occasion, move and be fine.But this operation design has a lot of problems under the situation that requires efficient, high-quality, economical and energy saving.

1, the regulating measure of pipe network is basic only by coming the temperature of pipe network is controlled by the leaving water temperature that changes boiler;

For combustion gas, oil burning boiler because the higher relative relatively good control of the leaving water temperature to boiler of the automaticity of the burning of boiler control, but the height for coal-burning boiler control leaving water temperature can only reach this purpose to input by the fire coal of plus-minus fire grate, because the drum of coal-burning boiler, the compared with control that air-introduced machine does not adopt air quantity, so can cause boiler requiring a large amount of cold air of flowing through of boiler furnace under the low operating mode of leaving water temperature to take away efficiency of utilization that a large amount of heat energy causes boiler and reduce and wasted the energy.

2, the outdoor temperature of Winter heat supply becomes China in continuous fluctuation, the exterior wall heat radiation of building also is that the temperature difference size with indoor temperature and outdoor temperature decides and needs additional what heat to come thermal balance in the holding chamber, require under the working condition this, desirable heat-supplying mode is that the additional heat of building of giving changes with the weather variation of temperature seasonable quarter constantly, only in this way just can reach the utilization heat that supply, need supply precise quantification less less that need more more.Adopt the method for manual adjustment boiler water outlet obviously not accomplishing a bit.

3, boiler is the conversion equipment of the energy, and it has best efficient operating condition, only is in best working condition operation and just can reaches best energy conversion efficiency, and boiler has following some parameter must be noted that:

(1) thermal power rating of boiler.

(2) leaving water temperature of boiler, return water temperature.

(3) thermal efficiency of boiler.

In fact this relation of 3 is that the thermal efficiency of operation boiler under the given situation of specified water outlet, backwater temperature difference condition, specified flow, specified fuel is only rated efficiency.It is constant therefrom will keeping the operating condition of higher thermal efficiency boiler as can be seen.The leaving water temperature that adopts low temperature to regulate boiler can cause the thermal conversion efficiency of boiler to reduce, and wastes energy.

Summary of the invention

The purpose of this utility model be make hot-water boiler heating system control can be more flexible, science, energy-conservation, economy necessarily move.

This hot-water boiler heating system energy-conserving regulate and control technology has solved some problem of the pipe network of following this technology of no use:

This " hot-water boiler heating system energy-saving regulation-control device " do not adopt the leaving water temperature of regulation and control boiler but is communicated with a by-pass line between the water supply person in charge by in the heating boiler room and the water return pipeline, install the electrically operated valve of an adjustable throttle amount additional at the middle part of pipeline, the action of this valve reaches the variation of controlling supply water temperature according to the Building Heat load variations of weather temperature correspondence by the program behavior that computer designs.

2, not regulation and control of the circling water flow rate of former heating system boiler, temperature cause the thermal efficiency of boiler low.

Install a pipeline additional between the heat water supply outlet conduit of this " hot-water boiler heating system energy-saving regulation-control device " employing boiler in the boiler room and the cold water return pipeline of boiler, install additional valve, stop valve, water pump are arranged on the pipeline, the rotating speed of this water pump is controlled by frequency converter, and the CRANK PULSES of frequency converter is again to be moved by the height of computer according to return water temperature.Reach the temperature that improves backwater like this, accelerate the time of boiler heating, improve the thermal efficiency of boiler.

The beneficial effects of the utility model are:

1, crosses the electrically operated valve that installs an adjustable throttle amount at the middle part of by-pass line additional, the program behavior that the action of this valve is designed by computer, reach the variation of controlling supply water temperature according to the Building Heat load variations of weather temperature correspondence, reach the purpose of heating according to need, precise quantification management.

2, install a by-pass line additional between the cold water return pipeline of the heat water supply outlet conduit of present technique employing boiler in the boiler room and boiler, install additional valve, stop valve, water pump are arranged on the pipeline, the rotating speed of this water pump is controlled by frequency converter, and the CRANK PULSES of frequency converter is again to be moved by the height of computer according to return water temperature.Reach the temperature that improves backwater like this, accelerate the time of boiler heating, improve the thermal efficiency of boiler, the purpose of minimizing energy waste.

Description of drawings

Accompanying drawing is the schematic diagram of the utility model heating network energy-conserving regulate and control technical equipment

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described

The by-pass line 6 in low as shown in drawings district and electrically operated valve 7 are connected in parallel between water supply line 2 and the water return pipeline 3 by welding to be connected with flange.The by-pass line 8 of the secondary water circulation system 15 of high district heat exchanger 16 and electrically operated valve 9 are connected with flange by welding and are connected in parallel on height and distinguish between the water supply line 4 He Gao district water return pipelines 5.In the pipeline of boiler 1, by-pass line 10 is connected between the water supply line and water return pipeline that is connected in parallel on boiler 1 with flange by welding with valve 11, water pump 12, stop valve 13.

Claims

1, a kind of hot-water boiler heating system energy-saving regulation-control device, it is characterized in that, by being communicated with the technology of a by-pass line between the water supply person in charge in the heating boiler room and the water return pipeline, install the electrically operated valve of an adjustable throttle amount additional at the middle part of pipeline, the action of this valve reaches the variation of controlling supply water temperature according to the Building Heat load variations of weather temperature correspondence by the program behavior that computer designs.

2, a kind of hot-water boiler heating system energy-saving regulation-control device, it is characterized in that, install a pipeline additional between the heat water supply outlet conduit of employing boiler in the boiler room and the cold water return pipeline of boiler, install additional valve, stop valve, water pump are arranged on the pipeline, the rotating speed of this water pump is controlled by frequency converter, and the CRANK PULSES of frequency converter is again to be moved by the height of computer according to return water temperature.