CN219656448U - Cold water supply system for improving heat supply capacity of combined cycle of fuel gas - Google Patents
Cold water supply system for improving heat supply capacity of combined cycle of fuel gas Download PDFInfo
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- CN219656448U CN219656448U CN202321366786.XU CN202321366786U CN219656448U CN 219656448 U CN219656448 U CN 219656448U CN 202321366786 U CN202321366786 U CN 202321366786U CN 219656448 U CN219656448 U CN 219656448U
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- cold water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 239000002737 fuel gas Substances 0.000 title description 5
- 238000001816 cooling Methods 0.000 claims abstract description 31
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 22
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000008400 supply water Substances 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims 5
- 238000009825 accumulation Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 22
- 239000000498 cooling water Substances 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 10
- 230000001502 supplementing effect Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model relates to the technical field of combined gas cycle units, and particularly discloses a cold water supply system for improving heat supply capacity of a gas combined cycle, which comprises a gas turbine unit, a bromine cooling unit, an external cold water supply and distribution device, an internal cold water supply and distribution device, a plate heat exchanger, a gas inlet cooler of a gas turbine and a cold storage water tank. According to the utility model, the gas inlet cooler of the gas turbine is additionally arranged to be respectively connected with the cold water distributor and the cold water collector, and the bromine cooling unit is arranged to meet the cold supply requirements inside and outside the plant, so that the operation mode of the steam turbine unit is adjusted, the maximum heat supply capacity of the unit is improved, the heat supply economy is improved, and the user requirements are met.
Description
Technical Field
The utility model relates to the technical field of combined gas cycle units, in particular to a cold water supply system for improving heat supply capacity of a combined gas cycle.
Background
The gas-steam combined cycle is used as an advanced power generation technology, the position of the gas-steam combined cycle in the power generation industry is increasingly improved, a power device integrating the steam turbine cycle and the gas turbine cycle is generally built into a 2X 115MW gas-steam combined cycle generator set by enterprises, a refrigeration station, a chilled water pipe network and a heat supply steam pipe network are built in a matched mode, and the three-generation of cooling, heating and electricity for the park enterprises is realized.
In recent years, as the heat supply quantity is increased year by expanding heat users, the thermoelectric ratio of 2 units is low, the single unit operation cannot meet the heat user demand, if a standby gas boiler is started, the natural gas consumption is increased to influence the economy, and if the heat consumption of the heat user slightly fluctuates, the pressure of a heat supply network can be reduced, so that the heat supply safety and reliability are influenced.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a cold water supply system for improving the heat supply capacity of the combined cycle of the fuel gas aiming at the defects in the prior art, wherein a gas inlet cooler of a fuel gas engine is additionally arranged to be respectively connected with an external cold water supply and distribution device and an external cold water supply and collection device, and a bromine cooling unit is arranged to meet the internal and external cold supply demands of the plant, so that the operation mode of the steam turbine unit is adjusted, the maximum heat supply capacity of the unit is improved, the heat supply economy is improved, and the user demands are met.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a promote cold water supply system of gas combined cycle heat supply, includes turbine unit, bromine cooling unit, cold water separator is supplied outside the factory, cold water collector is supplied outside the factory, cold water separator is supplied in the factory, cold water collector is supplied in the factory, plate heat exchanger, gas turbine inlet cooler and cold-storage water tank, turbine unit respectively with cold water separator is supplied in the factory and cold water collector is supplied in the factory, plate heat exchanger respectively with cold water separator is supplied outside the factory, cold water collector is supplied outside the factory, cold water separator is supplied in the factory and cold water collector is supplied in the factory, bromine cooling unit, gas turbine inlet cooler and cold-storage water tank all are connected with cold water separator is supplied outside the factory and cold water collector is supplied outside the factory respectively.
Preferably, the minimum opening degree of the rotary partition plate of the turbine unit is 3.5%, and the maximum steam extraction amount of the turbine unit is 78t/h.
Preferably, the bromine cooling unit is respectively connected with the cold storage water tank and a water supply port of a gas turbine inlet cooler, and a water return port of the gas turbine inlet cooler is connected with the cold storage water tank.
Preferably, the in-plant cold supply water separator, the in-plant cold supply water collector and the plate heat exchanger are all connected with an electric cooling unit, and cold water pumps are connected between the electric cooling unit and the plate heat exchanger and between the electric cooling unit and the in-plant cold supply water collector.
Preferably, a cold water pump is connected between the bromine cooling unit and the cold water supply collector outside the factory.
Preferably, a plurality of butterfly valves and electric stop valves are connected between the cold water supply and distribution device outside the plant and between the cold water supply and distribution device inside the plant and the cold water supply and distribution device inside the plant.
By adopting the technical scheme, the cold water supply system for improving the heat supply capacity of the combined cycle of the fuel gas has the following beneficial effects: the plate heat exchanger is respectively connected with the cold water separator outside the plant, the cold water collector outside the plant, the cold water separator inside the plant and the cold water collector inside the plant, the bromine cooling unit, the gas inlet cooler of the combustion engine and the cold storage water tank are respectively connected with the cold water separator outside the plant and the cold water collector outside the plant, the gas inlet cooler of the combustion engine is arranged to be respectively connected with the cold water separator outside the plant and the cold water collector outside the plant through the arrangement of the gas inlet cooler of the combustion engine, the operation mode of the turbine set is adjusted through the arrangement of the bromine cooling unit to meet the cold requirements inside and outside the plant, the maximum output of the combustion engine is improved, the evaporation capacity of a boiler is increased, the heat supply capacity of the elevator set is improved, the maximum heat supply capacity of the unit is improved, the heat supply economy is improved, the requirements of users are met, and the heat supply safety and reliability are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure, a 1-turbine unit, a 2-bromine cooling unit, a 3-off-plant cooling water separator, a 4-off-plant cooling water collector, a 5-on-plant cooling water separator, a 6-on-plant cooling water collector, a 7-plate heat exchanger, an 8-gas turbine air inlet cooler, a 9-cold storage water tank, a 10-electric cooling unit, an 11-cold water pump, a 12-butterfly valve and a 13-electric stop valve.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
As shown in fig. 1, in the structural schematic diagram of the present utility model, the cold water supply system for lifting the heat supply capacity of the combined cycle of the gas and the fuel comprises a turbine unit 1, a bromine cold unit 2, an off-site cold water separator 3, an off-site cold water collector 4, an on-site cold water separator 5, an on-site cold water collector 6, a plate heat exchanger 7, a gas inlet cooler 8 and a cold storage water tank 9, wherein the turbine unit 1 is respectively connected with the on-site cold water separator 5 and the on-site cold water collector 6, the plate heat exchanger 7 is respectively connected with the off-site cold water separator 3, the off-site cold water collector 4, the on-site cold water separator 5 and the on-site cold water collector 6, and the bromine cold unit 1, the gas inlet cooler 8 and the cold storage water tank 9 are respectively connected with the off-site cold water separator 3 and the off-site cold water collector 4. It can be understood that the steam turbine unit 1 may be formed by a plurality of steam turbines, the bromine cooling unit 2 may be formed by a plurality of bromine cooling machines, and the number of the cold storage water tanks 9 may be plural; the external cooling water separator 3 and the internal cooling water separator 5 may be common cooling water separators, and the external cooling water collector 4 and the internal cooling water collector 6 may be common cooling water collectors.
Specifically, the minimum opening degree of the rotary partition plate of the steam turbine unit 1 is 3.5%, and the maximum steam extraction amount of the steam turbine unit 1 is 78t/h. It can be understood that by adjusting the minimum opening of the rotary baffle plate of the steam turbine, organization professionals analyze the running condition of the unit and develop a plurality of times of maximum steam extraction tests, and strict technical measure editing and approval are performed before each test; the minimum opening of the rotary partition plate of the steam turbine is gradually adjusted from 20% to 10% (the maximum steam extraction amount is 65 t/h) and 5% (the maximum steam extraction amount is 70 t/h), the minimum opening of the rotary partition plate is finally limited to 3.5% by comprehensively considering the safety and the economy, the maximum steam extraction amount of the steam turbine is gradually increased from 56.5t/h to 78t/h, the efficiency of the steam turbine is effectively improved, the operation of a gas boiler is reduced, and the consumption of natural gas is saved. The coal consumption is reduced by about 4g, and the unit coal consumption is only 194g/kwh under the optimal operation condition.
Specifically, the bromine cooling unit 2 is respectively connected with the cold storage water tank 9 and a water supply port of a gas turbine inlet cooler 8, and a water return port of the gas turbine inlet cooler 8 is connected with the cold storage water tank 9; the in-plant cooling water separator 5, the in-plant cooling water collector 6 and the plate heat exchanger 7 are connected with an electric cooling unit 10, and cold water pumps 11 are connected between the electric cooling unit 10 and the plate heat exchanger 7 and between the electric cooling unit 10 and the in-plant cooling water collector 6; a cold water pump 11 is connected between the bromine cooling unit 2 and the cold water collector 4 outside the factory; a plurality of butterfly valves 12 and electric stop valves 13 are connected between the cold water supply and distribution device 3 and the cold water supply and distribution device 4, and between the cold water supply and distribution device 5 and the cold water supply and distribution device 6. It can be understood that the air inlet cooler of the combustion engine is used, the bromine cooling unit is used for meeting the cooling requirements inside and outside the factory, and after the combustion engine is in a temperature control mode, the air inlet cooler of the combustion engine is put into the air inlet cooler of the combustion engine, so that the inlet temperature of the compressor of the combustion engine is reduced, the maximum output of the combustion engine is improved by 2-3MW, the evaporation capacity of the boiler is improved, and the heat supply capacity of the unit is further improved. The maximum water supplementing quantity of the unit condenser initially designed is 65t/h, and the water supplementing quantity can not meet the maximum heat supply quantity in the test process of the rotary partition board. After the perforated reconstruction is carried out on the water supplementing pipeline of the condenser, the maximum water supplementing quantity of the condenser is 80t/h. The water supplementing amount and the steam extracting amount of the unit are matched.
It can be understood that the utility model has reasonable design and unique structure, is respectively connected with the cold water separator 3 and the cold water collector 4 by additionally arranging the gas turbine inlet cooler 8, and realizes the adjustment of the running mode of the turbine unit 1 by arranging the bromine cooling unit 2 to meet the cold demand inside and outside the factory, thereby improving the maximum output of the gas turbine, increasing the evaporation capacity of the boiler, improving the heat supply capacity of the turbine unit 1, improving the maximum heat supply capacity of the turbine unit 1, improving the heat supply economy, meeting the user demand and improving the heat supply safety and reliability.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.
Claims (6)
1. The utility model provides a promote cold water supply system of gas combined cycle heat supply, includes turbine unit, bromine cold unit, cold water separator of external supply of factory, cold water collector of external supply of factory, cold water separator of internal supply of factory and cold water collector of internal supply of factory, turbine unit respectively with cold water separator of internal supply of factory and cold water collector of internal supply of factory are connected, its characterized in that: also comprises a plate heat exchanger, a gas engine air inlet cooler and a cold accumulation water tank, wherein the plate heat exchanger is respectively connected with an external cold supply water separator, an external cold supply water collector, an internal cold supply water separator and an internal cold supply water collector, and the bromine cooling unit, the gas engine air inlet cooler and the cold storage water tank are respectively connected with the off-plant cold supply water separator and the off-plant cold supply water collector.
2. The cold water supply system for elevating heat supply of combined cycle of gas and fuel according to claim 1, wherein: the minimum opening of the rotary partition plate of the turbine unit is 3.5%, and the maximum steam extraction amount of the turbine unit is 78t/h.
3. The cold water supply system for elevating heat supply of combined cycle of gas and fuel according to claim 1, wherein: the bromine cooling unit is respectively connected with the cold storage water tank and a water supply port of the gas engine inlet cooler, and a water return port of the gas engine inlet cooler is connected with the cold storage water tank.
4. The cold water supply system for elevating heat supply of combined cycle of gas and fuel according to claim 1, wherein: the cold water supply and distribution device is characterized in that the in-plant cold water supply and distribution device, the in-plant cold water supply and collection device and the plate heat exchanger are all connected with an electric cooling unit, and cold water pumps are connected between the electric cooling unit and the plate heat exchanger and between the electric cooling unit and the in-plant cold water supply and collection device.
5. The cold water supply system for elevating heat supply of combined cycle of gas and fuel according to claim 1, wherein: and a cold water pump is connected between the bromine cooling unit and the cold water collector outside the factory.
6. The cold water supply system for elevating heat supply of combined cycle of gas and fuel according to claim 1, wherein: and a plurality of butterfly valves and electric stop valves are respectively connected between the cold water supply and distribution device outside the plant and between the cold water supply and distribution device inside the plant and the cold water supply and distribution device inside the plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366786.XU CN219656448U (en) | 2023-05-31 | 2023-05-31 | Cold water supply system for improving heat supply capacity of combined cycle of fuel gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366786.XU CN219656448U (en) | 2023-05-31 | 2023-05-31 | Cold water supply system for improving heat supply capacity of combined cycle of fuel gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219656448U true CN219656448U (en) | 2023-09-08 |
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ID=87881052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321366786.XU Active CN219656448U (en) | 2023-05-31 | 2023-05-31 | Cold water supply system for improving heat supply capacity of combined cycle of fuel gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219656448U (en) |
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2023
- 2023-05-31 CN CN202321366786.XU patent/CN219656448U/en active Active
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