CN209605251U - A kind of novel electric regulating valve thermal power plant unit - Google Patents
A kind of novel electric regulating valve thermal power plant unit Download PDFInfo
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- CN209605251U CN209605251U CN201920327563.XU CN201920327563U CN209605251U CN 209605251 U CN209605251 U CN 209605251U CN 201920327563 U CN201920327563 U CN 201920327563U CN 209605251 U CN209605251 U CN 209605251U
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- heat exchanger
- regulating valve
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- programmable logic
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Abstract
The utility model relates to a kind of novel electric regulating valve thermal power plant units, comprising: programmable logic controller (PLC)；Heat exchanger comprising once water supply water inlet, secondary water-supply water outlet, primary water water outlet and secondary return water water inlet；Water supplying pipe is connected with the primary water supply water inlet of heat exchanger；Secondary return pipe is connected with the secondary return water water inlet of heat exchanger；Primary water pipe is connected with the primary water water outlet of heat exchanger；Third temperature transmitter, output end are connected with the input terminal of programmable logic controller (PLC).A kind of novel electric regulating valve thermal power plant unit disclosed by the utility model has the advantages that 1, improves the ability that thermal substation adapts to different operating conditions.2, the service life of electric control valve is increased.3, reduce energy waste, increase economic efficiency.4, heat stability is improved, heat supply needs under special operation condition are met.5, reduce the influence of valve vibration, noise, improve safety when heat supply running.
Description
Technical field
The utility model relates to a kind of novel electric regulating valve thermal power plant units.
Background technique
Thermal power plant unit is the important link of heating industry composition industrial automation system, mainly includes water circulating pump, heat exchange
Device, electric control valve and differential pressure controller.Cooperated by regulating valve and heat exchanger, adjust a flow to control conveying heat,
And then realize that the matter of electrical secondary system is adjusted.
But in larger central heating system, heat user needs the mount of using heat to change greatly in one day, heat
The quantity of heat given up in source can not accomplish the real-time adjusting with outdoor temperature in one day, be mainly shown as that primary side end thermal substation needs
With flow hour, pressure difference is very big；When need to be big with flow, pressure difference very little.
Because the regulating ratio R of single regulating valve is limited, it is difficult to adjusting be effectively performed.The general R of the regulating valve of domestic design
=30, operating condition cannot change greatly if using a regulating valve, otherwise, meet maximum stream flow, when minimum discharge
Valve opening very little, valve cavitation erosion is serious, and the lost of life frequently switches on, or even cannot work, and causes energy waste；Or it is full
Foot minimum discharge, valve characteristic degenerates when maximum stream flow, and valve opens to the maximum still is unsatisfactory for confession heat flow needs.
In practical projects, differential pressure controller is generally selected to adjust the pressure difference before and after electric control valve it is expected to reach good
Good operational effect, but effect is less desirable.And differential pressure controller is resistance element, can aggravate problem when operating condition is unfavorable
Adverse effect.
Utility model content
Purpose of utility model: the utility model makes improvement for the above-mentioned problems of the prior art, i.e., this is practical new
Type discloses a kind of novel electric regulating valve thermal power plant unit.
A kind of technical solution: novel electric regulating valve thermal power plant unit, comprising:
Programmable logic controller (PLC)；
Heat exchanger comprising once water supply water inlet, secondary water-supply water outlet, primary water water outlet and secondary return water into
The mouth of a river；
Water supplying pipe is connected with the primary water supply water inlet of heat exchanger, is laid with first pressure on a water supplying pipe
Transmitter is additionally provided with adjusting valve group on a water supplying pipe between first pressure transmitter and heat exchanger, in which:
The output end of first pressure transmitter is connected with the input terminal of programmable logic controller (PLC)；
Adjust valve group include the small diameter electric regulating valve being laid in a water supplying pipe and by pipeline with it is small-bore
Heavy caliber electric control valve, the electric butterfly valve of electric control valve parallel connection, also connect one first on the pipeline where the electric butterfly valve
Water pump, the output end of programmable logic controller (PLC) respectively with the input terminal of small diameter electric regulating valve, heavy caliber electric control valve
Input terminal, the input terminal of electric butterfly valve, the first water pump input terminal be connected；
Secondary water-supply pipe is connected with the secondary water-supply water outlet of heat exchanger, and secondary water-supply pipe becomes equipped with the first temperature
Device is sent, the output end of first temperature transmitter is connected with the input terminal of programmable logic controller (PLC)；
Secondary return pipe is connected with the secondary return water water inlet of heat exchanger, is laid with second on the secondary return pipe
Temperature transmitter is laid with the second water pump, second temperature on the secondary return pipe between second temperature transmitter and heat exchanger
The output end of transmitter is connected with the input terminal of programmable logic controller (PLC), the output end of programmable logic controller (PLC) and the second water
The input terminal of pump is connected；
Primary water pipe is connected with the primary water water outlet of heat exchanger, is laid with second on the primary water pipe
The output end of pressure transmitter, the second pressure transmitter is connected with the input terminal of programmable logic controller (PLC)；
Third temperature transmitter, the output end of third temperature transmitter are connected with the input terminal of programmable logic controller (PLC),
For detecting the real time temperature of outdoor air.
Further, heat exchanger is plate heat exchanger or volumetric heat exchanger.
Further, the internal diameter of small diameter electric regulating valve is 15~65mm.
Further, the internal diameter of heavy caliber electric control valve is 80~150mm.
Further, the internal diameter of electric butterfly valve is 50~100mm.
Further, the model times good fortune BX9000 of programmable logic controller (PLC).
Further, the first water pump is single absorption horizontal centrifugal pump.
The utility model has the advantages that a kind of novel electric regulating valve thermal power plant unit disclosed by the utility model and original heating system phase
Than having the advantages that
1, increase the adjustable range of primary side flow, improve the ability that thermal substation adapts to different operating conditions, improve heating quality；
2, the service life of electric control valve is increased --- before electric control valve not in parallel, electric control valve is in small
It cavitates when aperture serious, leverages the service life of electric control valve.
3, reduce energy waste, increase economic efficiency --- one be the reduction of valve frequently switch on aperture fluctuation make
At heat waste；Secondly being the reduction of electric control valve frequently replaces and repairs the correlative charges generated.
4, heat stability is improved, heat supply needs under special operation condition are met.
5, reduce the influence of valve vibration, noise, improve safety when heat supply running.Reduce motorized adjustment valve opening
When very little, influence of the high vibration and noise generated by valve cavitation erosion to resident avoids valve from damaging because of high vibration and lets out
Leakage.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of novel electric regulating valve thermal power plant unit disclosed by the utility model；
Wherein:
11- first pressure transmitter 12- second pressure transmitter
21- heavy caliber electric control valve 22- small diameter electric regulating valve
31- electric butterfly valve
41- the first water pump the second water pump of 42-
51- the first temperature transmitter 52- second temperature transmitter
53- third temperature transmitter
61- heat exchanger
Water supplying pipe 72- secondary water-supply pipe of 71-
81- primary water pipe bis- return pipes of 82-
→ indicate water (flow) direction
Specific embodiment:
Specific embodiment of the present utility model is described in detail below.
Specific embodiment 1
As shown in Figure 1, a kind of novel electric regulating valve thermal power plant unit, comprising:
Programmable logic controller (PLC) (PLC)；
Heat exchanger 61 comprising once water supply water inlet, secondary water-supply water outlet, primary water water outlet and secondary return water
Water inlet；
Water supplying pipe 71 is connected with the primary water supply water inlet of heat exchanger 61, and is laid on a water supplying pipe 71
One pressure transmitter 11 is additionally provided with regulating valve on a water supplying pipe 71 between first pressure transmitter 11 and heat exchanger 61
Group, in which:
The output end of first pressure transmitter 11 is connected with the input terminal of programmable logic controller (PLC)；
Adjust valve group include the small diameter electric regulating valve 22 being laid in a water supplying pipe 71 and by pipeline with it is small
The heavy caliber electric control valve 21 in parallel of bore electric control valve 22, electric butterfly valve 31, on the pipeline where the electric butterfly valve 31
Also connect one first water pump 41, the output end of programmable logic controller (PLC) respectively with the input terminal of small diameter electric regulating valve 22,
The input terminal of heavy caliber electric control valve 21, the input terminal of electric butterfly valve 31, the input terminal of the first water pump 41 are connected, for distinguishing
Control the start and stop of small diameter electric regulating valve 22, heavy caliber electric control valve 21, electric butterfly valve 31, the first water pump 41；
Secondary water-supply pipe 72 is connected with the secondary water-supply water outlet of heat exchanger 61, and secondary water-supply pipe 72 is equipped with first
The output end of temperature transmitter 51, the first temperature transmitter 51 is connected with the input terminal of programmable logic controller (PLC)；
Secondary return pipe 82 is connected with the secondary return water water inlet of heat exchanger 61, and is laid on secondary return pipe 82
Two temperature transmitters 52 are laid with the second water pump on the secondary return pipe 82 between second temperature transmitter 52 and heat exchanger 61
42, the output end of second temperature transmitter 52 is connected with the input terminal of programmable logic controller (PLC), programmable logic controller (PLC)
Output end is connected with the input terminal of the second water pump 42, for controlling the start and stop of the second water pump 42；
Primary water pipe 81 is connected with the primary water water outlet of heat exchanger 61, and is laid on primary water pipe 81
Two pressure transmitters 12, the output end of second pressure transmitter 12 are connected with the input terminal of programmable logic controller (PLC)；
Third temperature transmitter 53, the input terminal phase of the output end and programmable logic controller (PLC) of third temperature transmitter 53
Even, for detecting the real time temperature of outdoor air.
Further, heat exchanger 61 is plate heat exchanger.
Further, the internal diameter of small diameter electric regulating valve 22 is 15mm.
Further, the internal diameter of heavy caliber electric control valve 21 is 80mm.
Further, the internal diameter of electric butterfly valve 31 is 50mm.
Further, the model times good fortune BX9000 of programmable logic controller (PLC).
Further, the first water pump 41 is single absorption horizontal centrifugal pump.
The working principle of novel electric regulating valve thermal power plant unit disclosed by the utility model are as follows:
1. the small diameter electric regulating valve 22 of low negotiability is used in heat source operating condition abundance；
2. the heavy caliber electric control valve 21 of high negotiability is unable to satisfy heat source demand in small diameter electric regulating valve 22
When come into operation；
3. when two electric control valves (small diameter electric regulating valve 22 and heavy caliber electric control valve 21) are all unable to satisfy
When heat source demand, two regulating valves are all closed, and are opened electric butterfly valve 31, and start the first water pump 41, are increased flow, meet heat
Source demand.
When work, programmable logic controller (PLC) is acquired in real time by outdoor weather measuring point (i.e. third temperature transmitter 53)
Outdoor temperature, programmable logic controller (PLC) are acquired secondary in real time by secondary water-supply temperature point and secondary return water temperature measuring point
Supply and return water temperature, and supply and return water riser is calculated in real time；Programmable logic controller (PLC) is secondary for the average temperature of return water according to surveying
Degree calculates electric control valve valve opening or water pump frequency in real time, controls to big/small diameter electric regulating valve, the first water pump
System forms closed-loop control system.
Specific embodiment 2
Roughly the same with specific embodiment 1, difference is only in that:
The internal diameter of small diameter electric regulating valve 22 is 65mm.
The internal diameter of heavy caliber electric control valve 21 is 150mm.
The internal diameter of electric butterfly valve 31 is 100mm.
Heat exchanger 61 is volumetric heat exchanger
Specific embodiment 3
Roughly the same with specific embodiment 1, difference is only in that:
The internal diameter of small diameter electric regulating valve 22 is 40mm.
The internal diameter of heavy caliber electric control valve 21 is 100mm.
The internal diameter of electric butterfly valve 31 is 75mm.
The embodiments of the present invention is elaborated above.But the utility model is not limited to above-mentioned implementation
Mode, technical field those of ordinary skill within the scope of knowledge, the utility model ancestor can also not departed from
It is made a variety of changes under the premise of purport.
Claims (7)
1. a kind of novel electric regulating valve thermal power plant unit characterized by comprising
Programmable logic controller (PLC)；
Heat exchanger comprising once water supply water inlet, secondary water-supply water outlet, primary water water outlet and the water inlet of secondary return water
Mouthful；
Water supplying pipe is connected with the primary water supply water inlet of heat exchanger, is laid with first pressure pick-up on a water supplying pipe
Device is additionally provided with adjusting valve group on a water supplying pipe between first pressure transmitter and heat exchanger, in which:
The output end of first pressure transmitter is connected with the input terminal of programmable logic controller (PLC)；
Adjusting valve group includes the small diameter electric regulating valve being laid in a water supplying pipe and by pipeline and small diameter electric
Heavy caliber electric control valve, the electric butterfly valve of regulating valve parallel connection, one first water pump of also connecting on the pipeline where the electric butterfly valve,
The input with the input terminal of small diameter electric regulating valve, heavy caliber electric control valve respectively of the output end of programmable logic controller (PLC)
End, the input terminal of the input terminal of electric butterfly valve, the first water pump are connected；
Secondary water-supply pipe is connected with the secondary water-supply water outlet of heat exchanger, and secondary water-supply pipe is equipped with the first temperature transmitter,
The output end of first temperature transmitter is connected with the input terminal of programmable logic controller (PLC)；
Secondary return pipe is connected with the secondary return water water inlet of heat exchanger, is laid with second temperature on the secondary return pipe
Transmitter is laid with the second water pump, second temperature pick-up on the secondary return pipe between second temperature transmitter and heat exchanger
The output end of device is connected with the input terminal of programmable logic controller (PLC), the output end of programmable logic controller (PLC) and the second water pump
Input terminal is connected；
Primary water pipe is connected with the primary water water outlet of heat exchanger, is laid with second pressure on the primary water pipe
The output end of transmitter, the second pressure transmitter is connected with the input terminal of programmable logic controller (PLC)；
Third temperature transmitter, the output end of third temperature transmitter are connected with the input terminal of programmable logic controller (PLC), are used for
Detect the real time temperature of outdoor air.
2. a kind of novel electric regulating valve thermal power plant unit as described in claim 1, which is characterized in that heat exchanger is plate-type heat-exchange
Device or volumetric heat exchanger.
3. a kind of novel electric regulating valve thermal power plant unit as described in claim 1, which is characterized in that small diameter electric regulating valve
Internal diameter be 15~65mm.
4. a kind of novel electric regulating valve thermal power plant unit as described in claim 1, which is characterized in that heavy caliber electric control valve
Internal diameter be 80~150mm.
5. a kind of novel electric regulating valve thermal power plant unit as described in claim 1, which is characterized in that the internal diameter of electric butterfly valve is
50~100mm.
6. a kind of novel electric regulating valve thermal power plant unit as described in claim 1, which is characterized in that programmable logic controller (PLC)
Model times good fortune BX9000.
7. a kind of novel electric regulating valve thermal power plant unit as described in claim 1, which is characterized in that the first water pump is single-stage list
Inhale centrifugal pump of horizontal axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920327563.XU CN209605251U (en) | 2019-03-15 | 2019-03-15 | A kind of novel electric regulating valve thermal power plant unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920327563.XU CN209605251U (en) | 2019-03-15 | 2019-03-15 | A kind of novel electric regulating valve thermal power plant unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209605251U true CN209605251U (en) | 2019-11-08 |
Family
ID=68404758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920327563.XU Active CN209605251U (en) | 2019-03-15 | 2019-03-15 | A kind of novel electric regulating valve thermal power plant unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209605251U (en) |
-
2019
- 2019-03-15 CN CN201920327563.XU patent/CN209605251U/en active Active
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