CN209469458U - A kind of back pressure type heat supply steam turbine energy conservation regulating system - Google Patents
A kind of back pressure type heat supply steam turbine energy conservation regulating system Download PDFInfo
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- CN209469458U CN209469458U CN201821709384.4U CN201821709384U CN209469458U CN 209469458 U CN209469458 U CN 209469458U CN 201821709384 U CN201821709384 U CN 201821709384U CN 209469458 U CN209469458 U CN 209469458U
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Abstract
The utility model relates to a kind of back pressure type heat supply steam turbine energy conservation regulating systems, including Steam Turbine Through IP Admission, turbine low pressure cylinder, back pressure turbine, heat exchangers for district heating and energy saving adjusting controller, respectively by connecting into steam control valve with the turbine low pressure cylinder and back pressure turbine for heat regulating valve and back pressure turbine, the back pressure turbine is connect the Steam Turbine Through IP Admission with the heat exchangers for district heating；The Steam Turbine Through IP Admission outlet is equipped with intermediate pressure cylinder exhaust steam pressure measuring device, the turbine low pressure cylinder entrance is equipped with low pressure (LP) cylinder inlet pressure measuring device, the heat exchangers for district heating entrance is equipped with heat exchangers for district heating entrance hot net water temperature measurement device, and the heat exchangers for district heating outlet is equipped with heat exchangers for district heating outlet hot net water temperature measurement device and heat exchangers for district heating exports heat supply network water flow measuring device.The utility model enables to back pressure turbine into vapour restriction loss, and minimum, efficiency highest, the maximum energy-saving for realizing system are adjusted.
Description
Technical field
The utility model belongs to thermal power generating technology field more particularly to a kind of back pressure type heat supply steam turbine energy conservation adjusts system
System.
Background technique
The heat-supplying mode that large-scale cogeneration units central heating is more energy-saving and environmentally friendly as relatively small boiler heat supplying, is each
The technology that state's heat supply is paid attention to the most.Unit of the back pressure machine as no cold source energy, while ensuring heat supply, moreover it is possible to be sent out
Electricity, is heat-supplying mode the most efficient, the favor by many countries.
For the middle higher thermal power plant unit of row pressure power, the especially thermal power plant unit of punching steam extraction transformation, due to middle row pressure power
Much larger than heating extraction pressure needed for heat exchangers for district heating, need to cause throttling to be damaged heat exchangers for district heating heat supply by valve throttle
Lose larger, heating efficiency is affected larger.
Especially just end is trembled with fear the phase for heat supply, since heating load demand is little, thermal power plant unit heat supply steam extraction restriction loss is caused to increase
Add, leads to additional energy loss.The equipment back pressure turbine on extraction line may cause if adjusting method is improper
Back pressure turbine is chronically at throttling operation or the through-flow especially latter end blade of low pressure (LP) cylinder is in long-term non-security operation shape
State will lead to steam turbine for thermally safe and economical effect of heat-supply by very big potential impact.
For back pressure type heat supply steam turbine, admission control type is run using admission valve standard-sized sheet and sliding pressure control, is
Relatively inexpensive operation adjusting meaning.It needs to take into account through-flow safety and energy-saving heating mode for entire thermal power plant unit system,
The energy saving regulation scheme of a system is formed between back pressure turbine heat supply, extraction for heat supply etc..
Utility model content
The purpose of the utility model is to provide a kind of back pressure type heat supply steam turbine energy conservation regulating systems, utilize heat supply steam turbine
The larger pressure of middle row and the biggish restriction loss of heat supply valve, so that middle row's heating steam initially enters back pressure turbine and does
Function generates electricity simultaneously in back pressure turbine, the steam discharge of suitable pressure is sent to heat exchangers for district heating heating, realizes back pressure turbine
Exhausted spare heat heat supply.Simultaneously by energy saving adjusting controller, using heat supply network coolant-temperature gage, flow and intermediate pressure cylinder steam discharge, low pressure (LP) cylinder into
Steam pressure supplemental characteristic so that the back pressure turbine in normal heat supply into steam control valve standard-sized sheet, realize the section of heating system
It is adjustable operation.
The utility model provides a kind of back pressure type heat supply steam turbine energy conservation regulating system, including Steam Turbine Through IP Admission, vapour
Turbine low pressure (LP) cylinder, back pressure turbine, heat exchangers for district heating and energy saving adjusting controller, Steam Turbine Through IP Admission pass through heat supply tune respectively
Whole valve and back pressure turbine are connect into steam control valve with turbine low pressure cylinder and back pressure turbine, back pressure turbine and heat
The connection of net heater；
Steam Turbine Through IP Admission outlet is equipped with intermediate pressure cylinder exhaust steam pressure measuring device, and turbine low pressure cylinder entrance is equipped with low pressure (LP) cylinder
Inlet pressure measuring device, heat exchangers for district heating entrance are equipped with heat exchangers for district heating entrance hot net water temperature measurement device, heat exchangers for district heating
Outlet is equipped with heat exchangers for district heating outlet hot net water temperature measurement device and heat exchangers for district heating exports heat supply network water flow measuring device；
Energy saving adjusting controller and medium pressure cylinder exhaust steam pressure measuring device, low pressure (LP) cylinder inlet pressure measuring device, heat
Net calorifier inlets hot net water temperature measurement device, heat exchangers for district heating outlet hot net water temperature measurement device, heat exchangers for district heating outlet heat
Net water flow measuring device is connected for heat regulating valve and back pressure turbine into steam control valve, for opening in back pressure turbine
When dynamic, control back pressure turbine is adjusted into steam control valve, in normal heat supply, by control in heat regulating valve guarantee
The pressure value that cylinder pressure exhaust steam pressure measuring device, low pressure (LP) cylinder inlet pressure measuring device measure is led in safe allowed band
Calculating heat exchangers for district heating outlet heat supply network water temperature, heat exchangers for district heating entrance heat supply network water temperature and net heater outlet heat supply network water flow are crossed,
Control back pressure turbine is run under full-gear into steam control valve.
Further, back pressure turbine is connected with small generators, for remaining generated output is defeated by small generators
Toward station service.
According to the above aspect of the present invention, by back pressure type heat supply steam turbine energy conservation regulating system, it is larger using being arranged in heat supply steam turbine
Pressure and the biggish restriction loss of heat supply valve, so that middle row's heating steam initially enters back pressure turbine acting, in back pressure
Formula steam turbine power generation is sent to heat exchangers for district heating heating simultaneously, by the steam discharge of suitable pressure, realizes back pressure turbine exhausted spare heat
Heat supply.Simultaneously by energy saving adjusting controller, joined using heat supply network coolant-temperature gage, flow and intermediate pressure cylinder steam discharge, low pressure (LP) cylinder initial steam pressure
Number data so that the back pressure turbine in normal heat supply into steam control valve standard-sized sheet, realize that the energy conservation of heating system adjusts fortune
Row.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of back pressure type heat supply steam turbine energy conservation regulating system of the utility model.
Figure label:
1- Steam Turbine Through IP Admission；2- turbine low pressure cylinder；3- back pressure turbine；4- heat exchangers for district heating；5- heat supply adjustment
Valve；6- back pressure turbine is into steam control valve；7- heat exchangers for district heating exports hot net water temperature measurement device；The outlet of 8- heat exchangers for district heating
Heat supply network water flow measuring device；9- heat exchangers for district heating entrance hot net water temperature measurement device；10- intermediate pressure cylinder exhaust steam pressure measurement dress
It sets；11- low pressure (LP) cylinder inlet pressure measuring device；12- energy conservation adjusting controller；13- small generators.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
Join shown in Fig. 1, present embodiments provides a kind of back pressure type heat supply steam turbine energy conservation regulating system, including in steam turbine
Cylinder pressure 1, turbine low pressure cylinder 2, back pressure turbine 3, heat exchangers for district heating 4 and energy saving adjusting controller 12, Steam Turbine Through IP Admission 1
Respectively by connecting for heat regulating valve 5 and back pressure turbine into steam control valve 6 and turbine low pressure cylinder 2 and back pressure turbine 3
It connects, back pressure turbine 3 is connect with heat exchangers for district heating 4；
The outlet of Steam Turbine Through IP Admission 1 is equipped with intermediate pressure cylinder exhaust steam pressure measuring device 10, and 2 entrance of turbine low pressure cylinder is equipped with low
Cylinder pressure inlet pressure measuring device 11,4 entrance of heat exchangers for district heating are equipped with heat exchangers for district heating entrance hot net water temperature measurement device 9, heat
The outlet of net heater 4 is equipped with heat exchangers for district heating outlet hot net water temperature measurement device 7 and heat exchangers for district heating outlet heat supply network water flow is surveyed
Measure device 8；
Energy saving adjusting controller 12 and intermediate pressure cylinder exhaust steam pressure measuring device 10, low pressure (LP) cylinder inlet pressure measuring device 11,
Heat exchangers for district heating entrance hot net water temperature measurement device 9, heat exchangers for district heating outlet hot net water temperature measurement device 7, heat exchangers for district heating go out
Mouth heat supply network water flow measuring device 8 is connected for heat regulating valve 5 and back pressure turbine into steam control valve 6, in back pressure type vapour
When turbine 3 starts, control back pressure turbine is adjusted into steam control valve 6, in normal heat supply, passes through control heat supply adjustment
Valve 5 guarantees that the pressure value that intermediate pressure cylinder exhaust steam pressure measuring device 10, low pressure (LP) cylinder inlet pressure measuring device 11 measure permits in safety
Perhaps in range, and gone out by calculating heat exchangers for district heating outlet heat supply network water temperature, heat exchangers for district heating entrance heat supply network water temperature and net heater
Mouth heat supply network water flow, control back pressure turbine are run under full-gear into steam control valve 6.
The back pressure type heat supply steam turbine energy conservation regulating system, using arranged in heat supply steam turbine larger pressure and heat supply valve compared with
Big restriction loss generates electricity simultaneously so that middle row's heating steam initially enters back pressure turbine acting in back pressure turbine,
The steam discharge of suitable pressure is sent to heat exchangers for district heating heating, realizes the heat supply of back pressure turbine exhausted spare heat.Pass through energy conservation simultaneously
Adjusting controller, using heat supply network coolant-temperature gage, flow and intermediate pressure cylinder steam discharge, low pressure (LP) cylinder initial steam pressure supplemental characteristic, so that the back pressure
Formula steam turbine, into steam control valve standard-sized sheet, realizes that the energy conservation of heating system adjusts operation in normal heat supply.
In the present embodiment, back pressure turbine 3 is connected with small generators 13, for remaining generated output to be passed through small hair
Motor transports to station service.
The utility model is described in further detail below.
1 steam discharge of Steam Turbine Through IP Admission enters steam turbine 2, and a part of steam discharge of Steam Turbine Through IP Admission 1 enters back pressure turbine 3
External heat supply, the dump power after the external heat supply of 3 steam discharge of back pressure turbine, is issued, back pressure type steam turbine by small generators 13
3 steam discharge of machine enters heat exchangers for district heating 4 and heats to it, and intermediate pressure cylinder exhaust steam pressure measuring device 10, low pressure (LP) cylinder inlet pressure are surveyed
It measures device 11, heat exchangers for district heating entrance hot net water temperature measurement device 9, heat exchangers for district heating and exports hot net water temperature measurement device 7, heat supply network
The measuring signal of heater outlet heat supply network water flow measuring device 8 enters energy saving adjusting controller 12 and is calculated, and energy conservation is adjusted
Controller 12 is saved according to calculated result, is controlled into steam control valve 6 for heat regulating valve 5 and back pressure turbine.
Intermediate pressure cylinder steam discharge carries out heat supply heating to heat exchangers for district heating 4 by back pressure turbine 3, and back pressure turbine 3 opens
When dynamic, energy saving adjusting controller 12, which sends instructions, to be adjusted by back pressure turbine into steam control valve 6, and when normal heat supply,
Then by guaranteeing that intermediate pressure cylinder exhaust steam pressure measuring device 10, low pressure (LP) cylinder inlet pressure measuring device 11 measure for heat regulating valve 5
Under the conditions of pressure value is in safe allowed band, heat exchangers for district heating is calculated according to energy-saving controller 12 and exports heat supply network water temperature, heat supply network
Calorifier inlets heat supply network water temperature and net heater outlet heat supply network water flow, it is ensured that back pressure turbine is into steam control valve 6 in standard-sized sheet
Run under state so that back pressure turbine 3 into vapour restriction loss minimum, efficiency highest, while remaining generated output being passed through
Small generators 13 are sent to station service, realize that the maximum energy-saving of system is adjusted.For typical 300WM thermal power plant unit, conventional valve is compared
Door throttling control heat supply, can reduce net coal consumption rate about 1g/kwh, while can additionally increase generated output 15MW.
In above-mentioned adjustment process, first guarantee intermediate pressure cylinder exhaust steam pressure cannot it is too high can not be too low, general control exists
Between 0.25-1.0MPa, low pressure (LP) cylinder initial steam pressure cannot be too low, it should be ensured that low pressure (LP) cylinder is cooling and final stage does not occur air blast harm；
It, should be by being acted on for heat regulating valve 5 and 13 power-balance of small generators, so that back pressure turbine is adjusted into vapour when normal operation
6 aperture of valve is not involved in flow restriction control 100%, while ensuring that heat exchangers for district heating exports heat supply network coolant-temperature gage in claimed range,
General control is between 90-120 DEG C.
The above is only the preferred embodiment of the utility model, is not intended to limit the utility model, it is noted that
For those skilled in the art, without deviating from the technical principle of the utility model, it can also do
Several improvements and modifications out, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (2)
1. a kind of back pressure type heat supply steam turbine energy conservation regulating system, which is characterized in that including Steam Turbine Through IP Admission, steam turbine low-pressure
Cylinder, back pressure turbine, heat exchangers for district heating and energy saving adjusting controller, the Steam Turbine Through IP Admission is respectively by for heat regulating valve
And back pressure turbine is connect into steam control valve with the turbine low pressure cylinder and back pressure turbine, the back pressure turbine
It is connect with the heat exchangers for district heating；
The Steam Turbine Through IP Admission outlet is equipped with intermediate pressure cylinder exhaust steam pressure measuring device, and the turbine low pressure cylinder entrance is equipped with low
Cylinder pressure inlet pressure measuring device, the heat exchangers for district heating entrance are equipped with heat exchangers for district heating entrance hot net water temperature measurement device, institute
It states heat exchangers for district heating outlet and is equipped with heat exchangers for district heating outlet hot net water temperature measurement device and heat exchangers for district heating outlet heat supply network water flow
Measuring device；
The energy conservation adjusting controller and medium pressure cylinder exhaust steam pressure measuring device, low pressure (LP) cylinder inlet pressure measuring device, heat
Net calorifier inlets hot net water temperature measurement device, heat exchangers for district heating outlet hot net water temperature measurement device, heat exchangers for district heating outlet heat
Net water flow measuring device is connected for heat regulating valve and back pressure turbine into steam control valve, for opening in back pressure turbine
It when dynamic, control the back pressure turbine and is adjusted into steam control valve, in normal heat supply, adjusted by controlling the heat supply
Valve guarantees that the pressure value that medium pressure cylinder exhaust steam pressure measuring device, low pressure (LP) cylinder inlet pressure measuring device measure allows in safety
In range, and heat supply network water temperature, heat exchangers for district heating entrance heat supply network water temperature and net heater outlet are exported by calculating heat exchangers for district heating
Heat supply network water flow controls the back pressure turbine and runs under full-gear into steam control valve.
2. a kind of back pressure type heat supply steam turbine energy conservation regulating system according to claim 1, which is characterized in that the back pressure
Formula steam turbine is connected with small generators, for remaining generated output to be transported to station service by the small generators.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821709384.4U CN209469458U (en) | 2018-10-22 | 2018-10-22 | A kind of back pressure type heat supply steam turbine energy conservation regulating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821709384.4U CN209469458U (en) | 2018-10-22 | 2018-10-22 | A kind of back pressure type heat supply steam turbine energy conservation regulating system |
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| CN209469458U true CN209469458U (en) | 2019-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404063A (en) * | 2018-10-22 | 2019-03-01 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | A kind of back pressure type heat supply steam turbine energy conservation regulating system |
-
2018
- 2018-10-22 CN CN201821709384.4U patent/CN209469458U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404063A (en) * | 2018-10-22 | 2019-03-01 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | A kind of back pressure type heat supply steam turbine energy conservation regulating system |
| CN109404063B (en) * | 2018-10-22 | 2024-06-07 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Energy-saving regulating system of back pressure type heat supply steam turbine |
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