CN208594974U - A kind of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit using compression heat pump - Google Patents
A kind of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit using compression heat pump Download PDFInfo
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Abstract
The utility model discloses a kind of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN units using compression heat pump, including top layer gas power generation system, bottom steam generating system and carbon dioxide heat-pump afterheat utilizing system；Bottom steam generating system includes condenser, feed water preheater, three discard heat boilers, high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and the first generator；Carbon dioxide heat-pump afterheat utilizing system includes gas cooler, compressor, motor, regenerator and aerial cooler, and the generating efficiency of the system is high, while realizing the recycling of fume afterheat and the consumption reduction of air compressor machine.
Description
Technical field
The utility model belongs to field of waste heat utilization, is related to more than a kind of Combined cycle gas-steam turbine using compression heat pump
Heat utilization unit.
Background technique
Gas combustion-gas vapor combined cycle technology is generated electricity by top layer gas turbine power generation circulation and bottom steam Rankine
A kind of generation technology of efficiency power generation is realized in the combination of circulation.Gas combustion-gas vapor combined cycle unit, due to having height
The advantages that effect, low consumption, starting are fastly, flexible adjustment, availability are high, with low investment, the construction period is short and environmental pollution is small, at present in state
Outer power industry is just increasingly paid attention to and is developed.
It can be seen that gas combustion-gas vapor combined cycle will be a kind of important form of the following efficiency power generation.But it is existing
In some Combined cycle gas-steam turbines, single-pressure HGSR exhaust gas temperature is about 160~200 DEG C, double discard heat boiler smoke evacuation temperature
About 100~130 DEG C of degree, three discard heat boiler exhaust gas temperatures are about 80~90 DEG C.For the natural gas of hardly sulfur-bearing, cigarette
Gas dew-point temperature is about 43~53 DEG C, as long as exhaust gas temperature is higher than 10 DEG C of dew point in principle can avoid the low of smoke evacuation section heating surface
Temperature corrosion.Therefore, still there is biggish UTILIZATION OF VESIDUAL HEAT IN space.
In addition, the air compressor machine of top layer gas turbine power generation circulation is big power consuming device in Combined cycle gas-steam turbine, and its
Power consumption is influenced significantly by inlet air condition.It is shown according to data in literature, when combustion engine air inlet is from when being reduced to 15 DEG C for 30 DEG C, generating efficiency
It can be improved 1.5~2.0 percentage points.
It can be seen that there is the smoke evacuation end after inlet end and waste heat boiler before air compressor machine in Combined cycle gas-steam turbine
Energy-saving potentiality.Scholars have also carried out a large amount of effort at present, it is intended to further realize Combined cycle gas-steam turbine
It is energy-saving, efficiency of generating unit is improved, and achieve certain achievement.Such as: 1) steam-recycling formula gas turbine UTILIZATION OF VESIDUAL HEAT IN:
Its main feature is that the exhaust heat using simple cycle gas turbine engine generates superheated steam, this superheated steam re-injection is entered into the combustion gas wheel
Machine participates in circular work with by the first working medium of representative of air jointly.Equipment is small, invests low.It is new to be chiefly used in aircraft carrier
The main power plant etc. of type thrust power.2) gas turbine inner ring water waste-heat air inlet.Its main feature is that recycling various equipment
The low-temperature waste heat of cooling water, preheated fuel gas improve efficiency.Investment is smaller, and improved efficiency is general.At present using less.3) thermally conductive
Oil recycling combustion engine waste heat.Its main feature is that being used for natural gas deep cooling preliminary working system, pass through the steady preceding crude oil of fume afterheat heating, energy conservation
Effect is obvious.Scope of application limitation is larger.It is chiefly used in oil gas field.But above-mentioned residual-heat utilization technology not yet realizes that combustion and steam joins
The comprehensive utilization of Cycle Unit waste heat is closed, improved efficiency is limited.
If can be by the UTILIZATION OF VESIDUAL HEAT IN of Combined cycle gas-steam turbine, recovered flue gas waste heat while, reduces air compressor machine and enters
Mouth air themperature realizes air compressor machine consumption reduction, then can be obviously improved the generating efficiency of Combined cycle gas-steam turbine.However through investigating,
Research at present both at home and abroad about Combined cycle gas-steam turbine unit utilizing waste heat for refrigeration air inlet is relatively fewer, even more rarely has and passes through combustion gas
The research of waste heat recycling and air compressor machine consumption reduction is realized in the comprehensive utilization of Steam Combined Cycle unit waste heat.Therefore, it is also desirable to a large amount of
Original sex work.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of using compression heat pump
The generating efficiency of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit, the system is high, while realizing recycling and the pneumatics of fume afterheat
The consumption reduction of machine.
In order to achieve the above objectives, the Combined cycle gas-steam turbine waste heat benefit described in the utility model using compression heat pump
It include top layer gas power generation system, bottom steam generating system and carbon dioxide heat-pump afterheat utilizing system with unit；Bottom steams
Vapour electricity generation system includes condenser, feed water preheater, three discard heat boilers, high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and the first power generation
Machine；Carbon dioxide heat-pump afterheat utilizing system includes gas cooler, compressor, motor, regenerator and aerial cooler；
The exhanst gas outlet of top layer gas power generation system is connected with the smoke inlet of three discard heat boilers, the outlet of condenser
It is divided into two-way, wherein being connected all the way with the cold side input port of feed water preheater, the cold side outlet port of another way and feed water preheater is logical
The water inlet of piping and tri- discard heat boiler of Guan Houyu is connected, the entrance of high pressure cylinder and outlet respectively with three discard heat boilers
High-pressure outlet and middle indentation mouth be connected, the entrance of intermediate pressure cylinder and outlet respectively with the middle extrusion mouth of three discard heat boilers and low
Indentation mouth is connected, and the entrance of low pressure (LP) cylinder and outlet are connected with the entrance of the low tension outlet of three discard heat boilers and condenser respectively
Logical, high pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and the first generator are connected；
Gas cooler is located at the inside of three discard heat boiler exhanst gas outlets, the outlet of gas cooler and regenerator it is cold
Side entrance is connected, and the cold side outlet port of regenerator is connected with the entrance of compressor, the outlet of compressor and feed water preheater
Hot side entrance is connected, and the hot side outlet of feed water preheater is connected with the hot side entrance of regenerator, the hot side outlet of regenerator
It is connected with the cold side input port of aerial cooler, the cold side outlet port of aerial cooler is connected with the entrance of gas cooler, empty
The hot side outlet of Gas Cooler is connected with the entrance of top layer gas power generation system, and motor is connected with the drive shaft of compressor
It connects.
Top layer gas power generation system includes burning input channel, air compressor machine, combustion chamber, combustion gas turbine and the second generator；
The hot side outlet of aerial cooler is connected with the entrance of air compressor machine, the outlet of air compressor machine and burning input channel and combustion chamber
Entrance is connected, and the outlet of combustion chamber is connected with the entrance of combustion gas turbine, outlet and the three discard heat boilers of combustion gas turbine
Smoke inlet is connected, and combustion gas turbine, the second generator and air compressor machine are connected.
The outlet of condenser is divided into two-way after feed pump.
It further include the first valve and the second valve, wherein the outlet of condenser is divided into two-way after feed pump, wherein its
In be connected all the way with one end of the first valve, another way is connected through the second valve with the cold side input port of feed water preheater, gives
The cold side outlet port of water preheater is connected with the other end of the first valve by the water inlet of pipeline and tri- discard heat boiler of Guan Houyu
It is logical.
The hot side outlet of regenerator is connected through throttle valve with the cold side input port of aerial cooler.
Air compressor machine, combustion gas turbine and the second generator coaxle arrangement；High pressure cylinder, intermediate pressure cylinder, low pressure (LP) cylinder and the first generator
It is coaxially arranged；Compressor is coaxially arranged with motor.
The utility model has the following beneficial effects:
Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit described in the utility model using compression heat pump is specifically being grasped
When making, the temperature of air compressor machine inlet air is reduced by aerial cooler, realizes the consumption reduction of air compressor machine, the hair of lifting system
Electrical efficiency, in addition, the low-grade exhaust heat of three discard heat boilers smoke evacuation is recycled by gas cooler, it is by compressor that air is cold
But device and the low-grade exhaust heat of gas cooler recycling carry out the promotion of grade, and with this promoted three discard heat boilers to water temperature
Degree, so that the further generating efficiency of lifting system, compares existing Combined cycle gas-steam turbine unit residual-heat utilization technology, this
Utility model realizes the comprehensive utilization of fume afterheat, has been obviously improved the generating efficiency of system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Wherein, 11 it is air compressor machine, 12 be combustion chamber, 13 be combustion gas turbine, 14 be the second generator, 21 is feed pump, 22
It is high pressure cylinder for three discard heat boilers, 23,24 be intermediate pressure cylinder, 25 be low pressure (LP) cylinder, 26 be condenser, 27 is the first generator, 31
It is motor for compressor, 32,33 be feed water preheater, 34 be regenerator, 35 be throttle valve, 36 be aerial cooler, 37 is
Gas cooler, K1 are the first valve, K2 is the second valve.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, the Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit described in the utility model using compression heat pump
Including top layer gas power generation system, bottom steam generating system and carbon dioxide heat-pump afterheat utilizing system；Bottom steam-electric power
System includes condenser 26, feed water preheater 33, three discard heat boilers 22, high pressure cylinder 23, intermediate pressure cylinder 24, low pressure (LP) cylinder 25 and first
Generator 27；Carbon dioxide heat-pump afterheat utilizing system includes gas cooler 37, compressor 31, motor 32, regenerator 34
And aerial cooler 36；The exhanst gas outlet of top layer gas power generation system is connected with the smoke inlet of three discard heat boilers 22, coagulates
The outlet of vapour device 26 is divided into two-way, wherein be connected all the way with the cold side input port of feed water preheater 33, another way and feed-water preheating
The cold side outlet port of device 33 is by pipeline and the water inlet of tri- discard heat boiler 22 of Guan Houyu is connected, and the entrance of high pressure cylinder 23 and goes out
Mouthful it is connected respectively with the high-pressure outlet of three discard heat boilers 22 and middle indentation mouth, the entrance of intermediate pressure cylinder 24 and exports respectively with three
The middle extrusion mouth and low-pressure inlet of discard heat boiler 22 are connected, the entrance of low pressure (LP) cylinder 25 and outlet respectively with three discard heat boilers
22 low tension outlet and the entrance of condenser 26 are connected, high pressure cylinder 23,27 phase of intermediate pressure cylinder 24, low pressure (LP) cylinder 25 and the first generator
Connection；Gas cooler 37 is located at the inside of three discard heat boilers, 22 exhanst gas outlet, the outlet of gas cooler 37 and regenerator
34 cold side input port is connected, and the cold side outlet port of regenerator 34 is connected with the entrance of compressor 31, the outlet of compressor 31 with
The hot side entrance of feed water preheater 33 is connected, and the hot side outlet of feed water preheater 33 is connected with the hot side entrance of regenerator 34
Logical, the hot side outlet of regenerator 34 is connected with the cold side input port of aerial cooler 36, the cold side outlet port of aerial cooler 36 and
The entrance of gas cooler 37 is connected, and the hot side outlet of aerial cooler 36 is connected with the entrance of top layer gas power generation system
Logical, motor 32 is connected with the drive shaft of compressor 31.
Top layer gas power generation system includes burning input channel, air compressor machine 11, combustion chamber 12, combustion gas turbine 13 and the second hair
Motor 14；The hot side outlet of aerial cooler 36 is connected with the entrance of air compressor machine 11, the outlet and burning input of air compressor machine 11
Pipeline is connected with the entrance of combustion chamber 12, and the outlet of combustion chamber 12 is connected with the entrance of combustion gas turbine 13, combustion gas turbine 13
Outlet be connected with the smoke inlet of three discard heat boilers 22, combustion gas turbine 13, the second generator 14 and air compressor machine 11 are connected
It connects.
The utility model further includes the first valve K1 and the second valve K2, wherein the outlet of condenser 26 is through feed pump 21
After be divided into two-way, wherein be wherein connected all the way with one end of the first valve K1, another way is through the second valve K2 and feed-water preheating
The cold side input port of device 33 is connected, after the other end of the cold side outlet port of feed water preheater 33 and the first valve K1 are by pipeline and pipe
It is connected with the water inlet of three discard heat boilers 22.
The hot side outlet of regenerator 34 is connected through throttle valve 35 with the cold side input port of aerial cooler 36；Air compressor machine 11,
Combustion gas turbine 13 and the second generator 14 are coaxially arranged；High pressure cylinder 23, intermediate pressure cylinder 24, low pressure (LP) cylinder 25 and the first generator 27 are coaxial
Arrangement；Compressor 31 and motor 32 are coaxially arranged.
The working medium of top layer gas power generation system is the product after combustion gas and its burning, and the working medium of bottom steam generating system is
Water, the working medium of carbon dioxide heat-pump afterheat utilizing system are carbon dioxide.
The specific work process of the utility model are as follows:
In top layer gas turbine generating system, air compressor machine 11 will rise through the air after cooling of aerial cooler 36
Pressure, the air after boosting enter in combustion chamber 12, and the fuel of fuel inlet pipe output enters combustion chamber 12, in combustion chamber
In 12, air is mixed and burned with fuel, and the high-temperature gas for generation of burning is entered in combustion gas turbine 13 and done work, combustion gas turbine
13 dragging air compressor machines 11 and the work of the second generator 14, the flue gas that combustion gas turbine 13 is discharged enter in three discard heat boilers 22,
And in this, as the heat source of bottom steam generating system.
In bottom steam generating system, the water that condenser 26 exports is divided into two-way after the boosting of feed pump 21, wherein one
Road is sent after 33 cold side of feed water preheater is heated up into the water inlet of three discard heat boilers 22, and another way is then fed directly to three discards
In the water inlet of heat boiler 22, and be heated to be high temperature and high pressure steam through the high-pressure heater in three discard heat boilers 22, then into
Enter into high pressure cylinder 23 and do work, the steam discharge of high pressure cylinder 23 is heated through the middle pressure heater in three discard heat boilers 22, then
Into doing work in intermediate pressure cylinder 24, the steam discharge of intermediate pressure cylinder 24 is heated through the low-pressure heater in three discard heat boilers 22, then
Into doing work in low pressure (LP) cylinder 25, the steam discharge of low pressure (LP) cylinder 25 enters cooling in condenser 26 and is condensed into condensed water.
In carbon dioxide heat-pump afterheat utilizing system, the carbon dioxide after the heating of 34 cold side of regenerator enters compression
Boost in machine 31, to form high temperature and pressure carbon dioxide, high temperature and pressure carbon dioxide enter in feed water preheater 33 into
Further heat release in regenerator 34 is entered after row heat release, then after the throttling of throttle valve 35 is carbon dioxide gas-liquid two-phase working substance
It enters in aerial cooler 36 and absorbs heat, enter finally into and heated in gas cooler 37, to complete to air compressor machine
The cooling of the cooling of 11 inlet airs and the smoke evacuation of three discard heat boilers 22, the carbon dioxide after heating is then by carbon dioxide gas-liquid two
Phase working medium is converted to saturation carbon dioxide, then into heating up in the cold side of regenerator 34.
The utility model reduces the Air Temperature of 11 entrance of air compressor machine when specific operation by aerial cooler 36 first
Degree, realizes the consumption reduction of air compressor machine 11, and the generating efficiency of lifting system then recycles three discard heat boilers by gas cooler 37
The low-grade exhaust heat of 22 smoke evacuations, while the low-grade exhaust heat that aerial cooler 36 and gas cooler 37 recycle is subjected to grade and is mentioned
It rises, and the water supply for heating bottom steam generating system, the generating efficiency of further lifting system.It is steamed compared to existing combustion gas
Vapour combined cycle unit residual-heat utilization technology, the utility model realize the comprehensive utilization of waste heat, have been obviously improved the hair of system
Electrical efficiency.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit using compression heat pump, which is characterized in that fired including top layer
Gas electricity generation system, bottom steam generating system and carbon dioxide heat-pump afterheat utilizing system；Bottom steam generating system includes solidifying
Vapour device (26), feed water preheater (33), three discard heat boilers (22), high pressure cylinder (23), intermediate pressure cylinder (24), low pressure (LP) cylinder (25) and
One generator (27)；Carbon dioxide heat-pump afterheat utilizing system includes gas cooler (37), compressor (31), motor
(32), regenerator (34) and aerial cooler (36)；
The exhanst gas outlet of top layer gas power generation system is connected with the smoke inlet of three discard heat boilers (22), condenser (26)
Outlet is divided into two-way, wherein be connected all the way with the cold side input port of feed water preheater (33), another way and feed water preheater (33)
Cold side outlet port is by pipeline and the water inlet of tri- discard heat boiler (22) of Guan Houyu is connected, the entrance of high pressure cylinder (23) and go out
Mouth is connected with the high-pressure outlet of three discard heat boilers (22) and middle indentation mouth respectively, the entrance and outlet difference of intermediate pressure cylinder (24)
It is connected with the middle extrusion mouth of three discard heat boilers (22) and low-pressure inlet, the entrance of low pressure (LP) cylinder (25) and outlet are pressed with three respectively
The low tension outlet of waste heat boiler (22) and the entrance of condenser (26) are connected, high pressure cylinder (23), intermediate pressure cylinder (24), low pressure (LP) cylinder
(25) and the first generator (27) is connected；
Gas cooler (37) is located at the inside of three discard heat boiler (22) exhanst gas outlets, the outlet of gas cooler (37) with return
The cold side input port of hot device (34) is connected, and the cold side outlet port of regenerator (34) is connected with the entrance of compressor (31), compressor
(31) outlet is connected with the hot side entrance of feed water preheater (33), the hot side outlet and regenerator of feed water preheater (33)
(34) hot side entrance is connected, and the hot side outlet of regenerator (34) is connected with the cold side input port of aerial cooler (36), empty
The cold side outlet port of Gas Cooler (36) is connected with the entrance of gas cooler (37), the hot side outlet of aerial cooler (36) with
The entrance of top layer gas power generation system is connected, and motor (32) is connected with the drive shaft of compressor (31).
2. the Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit according to claim 1 using compression heat pump, feature
It is, top layer gas power generation system includes burning input channel, air compressor machine (11), combustion chamber (12), combustion gas turbine (13) and the
Two generators (14)；The hot side outlet of aerial cooler (36) is connected with the entrance of air compressor machine (11), and air compressor machine (11) goes out
Mouth and burning input channel are connected with the entrance of combustion chamber (12), the outlet of combustion chamber (12) and the entrance of combustion gas turbine (13)
It is connected, the outlet of combustion gas turbine (13) is connected with the smoke inlet of three discard heat boilers (22), combustion gas turbine (13), second
Generator (14) and air compressor machine (11) are connected.
3. the Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit according to claim 1 using compression heat pump, feature
It is, the outlet of condenser (26) is divided into two-way after feed pump (21).
4. the Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit according to claim 3 using compression heat pump, feature
It is, further includes the first valve (K1) and the second valve (K2), wherein the outlet of condenser (26) is divided into after feed pump (21)
Two-way, wherein be wherein connected all the way with one end of the first valve (K1), another way is through the second valve (K2) and feed water preheater
(33) cold side input port is connected, and the cold side outlet port of feed water preheater (33) and the other end of the first valve (K1) pass through pipeline simultaneously
The water inlet of tri- discard heat boiler (22) of Guan Houyu is connected.
5. the Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit according to claim 1 using compression heat pump, feature
It is, the hot side outlet of regenerator (34) is connected through throttle valve (35) with the cold side input port of aerial cooler (36).
6. the Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit according to claim 2 using compression heat pump, feature
It is, air compressor machine (11), combustion gas turbine (13) and the second generator (14) are coaxially arranged；It is high pressure cylinder (23), intermediate pressure cylinder (24), low
Cylinder pressure (25) and the first generator (27) are coaxially arranged；Compressor (31) and motor (32) are coaxially arranged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821266114.0U CN208594974U (en) | 2018-08-07 | 2018-08-07 | A kind of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit using compression heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821266114.0U CN208594974U (en) | 2018-08-07 | 2018-08-07 | A kind of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit using compression heat pump |
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| CN208594974U true CN208594974U (en) | 2019-03-12 |
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| CN201821266114.0U Active CN208594974U (en) | 2018-08-07 | 2018-08-07 | A kind of Combined cycle gas-steam turbine UTILIZATION OF VESIDUAL HEAT IN unit using compression heat pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057898A (en) * | 2018-08-07 | 2018-12-21 | 西安热工研究院有限公司 | A kind of Combined cycle gas-steam turbine afterheat utilizing system based on carbon dioxide heat-pump |
| CN113864002A (en) * | 2021-10-18 | 2021-12-31 | 西安西热节能技术有限公司 | Steam and electricity double-drive compressed air preparation system based on cogeneration unit |
| CN114776411A (en) * | 2022-05-27 | 2022-07-22 | 华能国际电力股份有限公司 | Heat-storage-integrated coal-fired power generation system and working method |
-
2018
- 2018-08-07 CN CN201821266114.0U patent/CN208594974U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057898A (en) * | 2018-08-07 | 2018-12-21 | 西安热工研究院有限公司 | A kind of Combined cycle gas-steam turbine afterheat utilizing system based on carbon dioxide heat-pump |
| CN109057898B (en) * | 2018-08-07 | 2023-10-20 | 西安热工研究院有限公司 | Gas-steam combined cycle waste heat utilization system based on carbon dioxide heat pump |
| CN113864002A (en) * | 2021-10-18 | 2021-12-31 | 西安西热节能技术有限公司 | Steam and electricity double-drive compressed air preparation system based on cogeneration unit |
| CN114776411A (en) * | 2022-05-27 | 2022-07-22 | 华能国际电力股份有限公司 | Heat-storage-integrated coal-fired power generation system and working method |
| CN114776411B (en) * | 2022-05-27 | 2023-05-05 | 华能国际电力股份有限公司 | Integrated heat storage coal-fired power generation system and working method |
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