CN215595736U - Heating device for recovering heat of gas turbine housing to supply natural gas - Google Patents
Heating device for recovering heat of gas turbine housing to supply natural gas Download PDFInfo
- Publication number
- CN215595736U CN215595736U CN202120556215.7U CN202120556215U CN215595736U CN 215595736 U CN215595736 U CN 215595736U CN 202120556215 U CN202120556215 U CN 202120556215U CN 215595736 U CN215595736 U CN 215595736U
- Authority
- CN
- China
- Prior art keywords
- water
- natural gas
- housing
- pipeline
- return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a heating device for recovering heat of a gas turbine housing and supplying natural gas, which comprises a housing waste heat collecting circulating water pump set, a water supply pipeline, an electric adjusting valve, a housing fan air channel heat exchanger, a housing rear temperature transmitter, a natural gas heater, a return water temperature transmitter and a return water pipeline, wherein the housing waste heat collecting circulating water pump set is connected with the water inlet end of the water supply pipeline, the electric adjusting valve is arranged on the water supply pipeline, the water outlet end of the water supply pipeline is connected with the water inlet of the housing fan air channel heat exchanger, the housing rear temperature transmitter is arranged at the water outlet of the housing fan air channel heat exchanger, the natural gas heater is communicated with the water outlet of the housing fan air channel heat exchanger, meanwhile, the natural gas heater is communicated with the water inlet end of the water return pipeline, the water return temperature transmitter is installed at the water outlet of the natural gas heater, and the water outlet end of the water return pipeline is connected with the housing waste heat collection circulating water pump unit. The utility model recycles the energy originally discarded, and reduces the energy consumption of the whole unit.
Description
Technical Field
The utility model relates to a heating device for recovering heat of a gas turbine housing to supply natural gas, which is a device for recovering the heat in the gas turbine housing to utilize and heat the natural gas under the operating condition of a gas turbine without heat preservation measures for a cylinder body.
Background
With the gradual increase of the proportion of the gas turbine power generation and installation, the safety and the economic benefit in the operation process of the gas turbine are more and more emphasized. On one hand, natural gas, coal gas, Liquefied Petroleum Gas (LPG) and the like are used as fuel of the gas turbine, leakage in different degrees exists in the operation process of the gas turbine, on the other hand, heat is easily accumulated in the housing, and the temperature can be continuously increased. The casings of the power plants in which the gas turbines are located are usually provided with ventilation devices which discharge the possibly leaked fuel gas together with the hot air out of the casings. Some gas turbine models are convenient for inspection of an access hole, a heat insulation layer is not wrapped on a cylinder body, the temperature in a housing is far higher than that of a unit additionally provided with the heat insulation layer, and the internal air temperature of the gas turbine housing often reaches 90 ℃ or even higher. This hot air is drawn out of the enclosure by the ventilation device and vented to the atmosphere. The exhausted hot air has relatively high energy, and in the case of a certain class F heavy-duty gas turbine, the amount of heat dissipated from the cylinder block to the casing is about 80kW at full load, which results in a large energy waste. During the operation of the gas turbine, the temperature of natural gas must be within a certain range to meet the ornamental index during combustion, and usually, natural gas pre-modules are provided with natural gas heating devices, including electric heaters and performance heaters which use high-pressure feed water of a boiler as heat. The process of heating natural gas is energy consuming whether it is an electric heater or a performance heater.
SUMMERY OF THE UTILITY MODEL
When some gas turbines with cylinder bodies not being insulated operate, the temperature of air in the housing is very high, and at present, the common practice is to use a fan to draw out hot air and natural gas which may leak out of the housing together and discharge the hot air and the natural gas to the atmosphere. In order to recover the energy of the hot air, the utility model provides a gas turbine housing heat recovery natural gas heating device with reasonable structural design, which utilizes the hot air to be discharged out of the housing to heat a medium, and the heated medium is used for heating the natural gas, so as to reduce the energy consumption of a natural gas heater.
The technical scheme adopted by the utility model for solving the problems is as follows: a heating device for recovering heat of a gas turbine housing and supplying natural gas is characterized by comprising a housing waste heat collecting circulating water pump set, a water supply pipeline, an electric adjusting valve, a housing fan air channel heat exchanger, a housing rear temperature transmitter, a natural gas heater, a return water temperature transmitter and a return water pipeline, wherein the housing waste heat collecting circulating water pump set is connected with the water inlet end of the water supply pipeline, the electric adjusting valve is arranged on the water supply pipeline, the water outlet end of the water supply pipeline is connected with the water inlet of the housing fan air channel heat exchanger, the housing rear temperature transmitter is arranged at the water outlet of the housing fan air channel heat exchanger, the natural gas heater is communicated with the water inlet end of the return water pipeline, the return water temperature transmitter is arranged at the water outlet of the natural gas heater, and the water outlet end of the return water pipeline is connected with the housing waste heat collecting circulating water pump set, and a water discharge drain outlet and a water replenishing port are arranged on the water return pipeline.
The water supply pipeline is reasonably arranged in the trend, water supply enters the housing fan air channel heat exchanger after the flow is adjusted by the electric adjusting valve, and heat exchange is carried out on hot air to be discharged to the atmosphere at the housing fan air channel, so that heat is recovered. The recovered heat is used for heating natural gas, the natural gas heater is arranged in the natural gas front module before the electric heater and the performance heater, and the direction of water flow in the natural gas heater is opposite to the direction of natural gas flow so as to fully exchange heat. The flow of water is adjusted according to the opening degree of the electric adjusting valve, the temperature rise of the water is controlled, and the temperature shown by the temperature transmitter behind the housing is in a proper value. After the water quality of the internal circulation water is deteriorated, the water is discharged through a drainage sewage discharge outlet, and then the demineralized water is supplemented from a water supplementing port.
Furthermore, the housing waste heat collecting circulating water pump set (hereinafter referred to as "water pump") is a device in which a motor drives a pump to operate, and can maintain the flow of water in the pipeline, so that the water has a certain flow velocity when passing through the heat exchanger, thereby maintaining a good heat exchange effect.
Furthermore, the water supply pipeline is used for conveying a heat exchange medium (water) to the heat exchanger, and has a certain heat preservation function.
Furthermore, the electric adjusting valve is used for controlling water flow in the pipeline, the valve position can be adjusted to any opening degree from 0% to 100%, and the electric adjusting valve can be remotely controlled and can also be manually operated on site.
Furthermore, the housing fan air channel heat exchanger is used for exchanging heat with high-temperature air in the housing fan channel, so that the water absorbs the heat of the air in the housing.
Further, the housing rear temperature transmitter is used to monitor the water temperature and transmit parameters to the set controller.
Further, the natural gas heater heats the natural gas by using water in the pipeline.
Furthermore, the water return pipeline is used for conveying a heat exchange medium (water) to return to the circulating water pump set, and has a certain heat preservation function.
In the natural gas heating device for recovering and supplying heat of the gas turbine housing, the water pump drives water in the pipeline to flow, the flow of the water is controlled by the electric regulating valve, and the water enters the housing fan air channel heat exchanger through the water supply pipeline. The air duct of the housing fan is adopted, the gas turbine unit generally adopts a larger housing fan for maintaining the negative pressure in the housing, the air flow rate in the air duct is higher, and water and air in the heat exchanger have better heat exchange effect. Water gets into the natural gas heater after being heated, exchanges heat with the natural gas each other, and the natural gas that the temperature was about ambient temperature originally heaies up, and the temperature of water reduces. The water returns to the water pump through a water return pipeline to form internal circulation. The heat of the air in the gas turbine housing is transferred to the natural gas, and finally, the natural gas is heated, so that the energy consumption of the original electric heater and the energy consumption of the original performance heater are reduced, and the aim of saving energy is fulfilled.
After the natural gas heating device starts to work by recovering the heat of the gas turbine casing, the opening of the electric regulating valve needs to be set because the temperature of water and natural gas and the heat dissipation capacity of the gas turbine can be changed at any time. The adjusting mode is that according to different working conditions, the absolute value is measured by the temperature transmitter behind the housing, and the temperature is directly controlled according to the adjusting rule set by the unit controller. It is proposed to set the adjustment rules as follows:
when Tair is more than or equal to 90 percent, the opening degree of the valve is 100 percent;
when Tair is less than or equal to 50, the opening of the valve is 0, and the water pump is stopped;
when Tair is more than 50 and less than 90, the opening is manually adjusted, so that the temperature of water behind the air channel heat exchanger of the shell fan exceeds 45 ℃. When Tair exceeds 90, the air in the housing can heat the circulating water well;
tair in the formula is the ambient temperature in the gas turbine housing in units of ℃. The electric regulating valve is fully opened; when Tair is less than 50, representing the shutdown or initial starting stage of the gas turbine, the environment temperature in the housing is low, the recoverable heat is less, the temperature requirement of natural gas is not high at the initial starting stage of the gas turbine, the electric regulating valve is in a closed state, and the water pump stops; when Tair is not less than 50 but less than 90, it represents that the temperature is somewhat reduced, but still in a high state, the heat quantity which the air can transfer to the water is not necessarily enough, and at this time, if the flow quantity of the water is too large, the temperature rise of the water will be low, and the temperature difference between the water and the natural gas will be small, so the effect of heating the natural gas will be weakened. Therefore, the opening of the electric regulating valve is manually adjusted, so that the temperature of water behind the air channel heat exchanger of the shell fan is higher than 45, and the water and the natural gas are guaranteed to have a good heat exchange effect.
Preferably, the arrangement position of the water and shell fan air duct heat exchanger is in the air duct of the shell fan, the air flow rate is high, the good convection heat exchange effect is achieved, and the arrangement position is the best position of the heat exchanger arranged in the shell.
Preferably, the flow rate of the water can be controlled by an electric regulating valve so as to achieve the best energy-saving effect.
Preferably, the natural gas heater is arranged in front of the electric heater and the performance heater in the natural gas front module, if the natural gas is heated by heat recovery, the temperature of the natural gas still does not meet the requirement, and the natural gas can be heated by the original electric heater and the performance heater to meet the requirement of the gas turbine.
Preferably, the water supply and return conduits are insulated to reduce heat dissipation along the way.
The design of the utility model adopts a new mode, the heat exchanger is placed in the air duct in front of the housing fan, and the internal medium is water. The temperature of the air pumped from the housing can be reduced after passing through the heat exchanger, and when the air passes through the housing fan, the temperature of the working environment of components of the fan can be reduced, so that the service life of the fan can be prolonged. In addition, when the fan breaks down or has defects, and when the heat exchanger is not added in the air duct, the temperature at the outlet of the fan reaches more than 100 ℃, and maintenance personnel cannot approach the fan. After the heat exchanger is added, the temperature of the air outlet of the fan can be obviously reduced, and the fan is convenient for maintenance personnel to work in a safer environment. Water after heat exchange with hot air enters the natural gas front-end module through a pipeline, and the natural gas is heated through the heat exchanger of the front-end module, so that the temperature of the natural gas is increased, and the energy consumption of an electric heater or a performance heater in the front-end module is reduced.
Compared with the prior art, the utility model has the following advantages and effects: in the operation process of the gas turbine, because a large amount of heat is generated, the temperature in the housing of the gas turbine is higher, the housing fan directly pumps high-temperature gas to the atmosphere, and meanwhile, the natural gas is heated before entering the gas turbine.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: the device comprises a housing waste heat collecting circulating water pump set 1, a water supply pipeline 2, an electric adjusting valve 3, a housing fan air duct heat exchanger 4, a housing rear temperature transmitter 5, a natural gas heater 6, a backwater temperature transmitter 7, a backwater pipeline 8, a water discharge sewage outlet 9 and a water replenishing port 10.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1, in the embodiment, a heating device for recovering heat and supplying natural gas for a gas turbine housing comprises a housing waste heat collecting circulating water pump unit 1, a water supply pipeline 2, an electric adjusting valve 3, a housing fan air channel heat exchanger 4, a housing rear temperature transmitter 5, a natural gas heater 6, a return water temperature transmitter 7 and a return water pipeline 8, wherein the housing waste heat collecting circulating water pump unit 1 is connected with the water inlet end of the water supply pipeline 2, the electric adjusting valve 3 is installed on the water supply pipeline 2, the water outlet end of the water supply pipeline 2 is connected with the water inlet of the housing fan air channel heat exchanger 4, the housing rear temperature transmitter 5 is arranged at the water outlet of the housing fan air channel heat exchanger 4, the natural gas heater 6 is communicated with the water inlet end of the return water pipeline 8, and the return water temperature transmitter 7 is installed at the water outlet of the natural gas heater 6, the water outlet end of the water return pipeline 8 is connected with the housing waste heat collecting circulating water pump set 1, and the water return pipeline 8 is provided with a water discharge sewage outlet 9 and a water replenishing port 10.
The water supply pipeline 2 is reasonably arranged and moves, water supply enters the housing fan air channel heat exchanger 4 after the flow is adjusted by the electric adjusting valve 3, and heat exchange is carried out on hot air to be exhausted to the atmosphere at the housing fan air channel, so that heat is recovered. The recovered heat is used for heating natural gas, the natural gas heater 6 is arranged in the natural gas front module before the electric heater and the performance heater, and the direction of water flow inside the natural gas heater 6 is opposite to the direction of natural gas flow so as to fully exchange heat. The flow of water is adjusted according to the opening degree of the electric adjusting valve 3, the temperature rise of the water is controlled, and the temperature shown by the temperature transmitter 5 behind the cover is enabled to be in an appropriate value. After the water quality of the internal circulation is deteriorated, the water is discharged through the water discharge and sewage discharge port 9, and then the demineralized water is supplemented from the water supplementing port 10.
Those not described in detail in this specification are well within the skill of the art.
In addition, it should be noted that the above contents described in the present specification are only illustrations of the structures of the present invention. All equivalent variations of the structures, features and principles described in accordance with the present inventive concepts are included within the scope of the present invention. Those skilled in the art to which the utility model relates will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the utility model as disclosed in the accompanying claims.
Claims (3)
1. A heating device for recovering heat of a gas turbine housing and supplying natural gas is characterized by comprising a housing waste heat collecting circulating water pump set (1), a water supply pipeline (2), an electric adjusting valve (3), a housing fan air channel heat exchanger (4), a housing rear temperature transmitter (5), a natural gas heater (6), a return water temperature transmitter (7) and a return water pipeline (8), wherein the housing waste heat collecting circulating water pump set (1) is connected with the water inlet end of the water supply pipeline (2), the electric adjusting valve (3) is arranged on the water supply pipeline (2), the water outlet end of the water supply pipeline (2) is connected with the water inlet of the housing fan air channel heat exchanger (4), the housing rear temperature transmitter (5) is arranged at the water outlet of the housing fan air channel heat exchanger (4), the natural gas heater (6) is communicated with the water outlet of the housing fan air channel heat exchanger (4), meanwhile, the natural gas heater (6) is communicated with the water inlet end of the water return pipeline (8), the water return temperature transmitter (7) is installed at the water outlet of the natural gas heater (6), and the water outlet end of the water return pipeline (8) is connected with the housing waste heat collection circulating water pump set (1).
2. The heating device for recovering heat of the gas turbine housing and supplying natural gas according to the claim 1, characterized in that the water return pipe (8) is provided with a water discharge drain outlet (9) and a water replenishing port (10).
3. Gas turbine shroud heat recovery natural gas heating apparatus according to claim 1, characterized in that the natural gas heater (6) is arranged in front of the electric and performance heaters in the natural gas pre-module and the water flow inside the natural gas heater (6) is in the opposite direction to the natural gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120556215.7U CN215595736U (en) | 2021-03-18 | 2021-03-18 | Heating device for recovering heat of gas turbine housing to supply natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120556215.7U CN215595736U (en) | 2021-03-18 | 2021-03-18 | Heating device for recovering heat of gas turbine housing to supply natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215595736U true CN215595736U (en) | 2022-01-21 |
Family
ID=79869800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120556215.7U Active CN215595736U (en) | 2021-03-18 | 2021-03-18 | Heating device for recovering heat of gas turbine housing to supply natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215595736U (en) |
-
2021
- 2021-03-18 CN CN202120556215.7U patent/CN215595736U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206785443U (en) | A kind of high-pressure natural gas cogeneration distributed energy resource system | |
| CN104564194A (en) | Comprehensive waste heat utilization system of internal combustion engine | |
| CN104948240A (en) | Exhaust steam waste heat recycling system for small steam turbine of induced draft fan through circulating water based on steam turbine driving | |
| CN106499455A (en) | Combined-cycle power plant's soda pop backheat and fuel heating integrated put forward effect system | |
| CN103884037A (en) | Circulating water heat exchange system of heating network | |
| CN101871455A (en) | Cooling and afterheat recovering device of air-cooled oil-injected screw air compressor | |
| CN104963735A (en) | Method and device for heating gas fuel through condenser cooling water return water waste heat | |
| CN103335445B (en) | System and method for utilizing gas-driven compressor waste heat | |
| CN113833534A (en) | Supercritical carbon dioxide turbine shaft seal air supply and leakage recovery system and method | |
| CN106640240A (en) | Gas-steam combined circulation system and operation control method thereof | |
| CN215595736U (en) | Heating device for recovering heat of gas turbine housing to supply natural gas | |
| CN203603989U (en) | Combined heating and power system with waste heat recycling function | |
| CN202040832U (en) | Connecting system of regenerative air preheater air leakage recycling device and dry-type slag removal machine | |
| CN204457897U (en) | The waste heat comprehensive utilization system of internal-combustion engine | |
| CN207945086U (en) | A kind of biomass electric power plant air compressor cooling water heat-exchanger rig | |
| CN212508455U (en) | Heat energy recovery device for steam turbine shaft seal heater | |
| CN205135815U (en) | System for distributed energy resource station refrigeration cycle water | |
| CN204532443U (en) | The circulatory system of the obstruct liquid of mechanical seal component | |
| CN209687558U (en) | A kind of steam turbine of thermal power plant low-vacuum-operating phase gland packing leakage processing mechanism | |
| CN203704106U (en) | Heating heat supply network circulating water heat exchange system | |
| KR101203966B1 (en) | Recycling device for waste heat of power plant | |
| CN105508055A (en) | System and method for cooling circulation water in distributed energy station | |
| CN219828887U (en) | Device for improving temperature of hot primary air | |
| CN102116215A (en) | Self-electricity consumption reduction combined cooling heat and power system | |
| CN112983575A (en) | High-flow steam extraction and heat supply steam turbine system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |