CN210829419U - Gas turbine inlet heat exchanger - Google Patents
Gas turbine inlet heat exchanger Download PDFInfo
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- CN210829419U CN210829419U CN201921856155.XU CN201921856155U CN210829419U CN 210829419 U CN210829419 U CN 210829419U CN 201921856155 U CN201921856155 U CN 201921856155U CN 210829419 U CN210829419 U CN 210829419U
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- pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Abstract
The utility model relates to a gas steam combined cycle unit equipment field specifically is a combustion engine heat transfer device that admits air, including inlet tube subassembly, return water pipe assembly and heat transfer unit, inlet tube subassembly is including the female pipe of intaking that communicates each other, intake violently pipe, two intake standpipe and two intake distributing pipes, and return water pipe assembly violently manages and two return water distributing pipes including the female pipe of return water, the return water of intercommunication each other. The heat exchange equipment is a heat exchanger array comprising at least 6 heat exchange units, and all the heat exchange units are connected in parallel, so that all parts of an air inlet section can be uniformly heated. The sum of the water inlet tube pass and the sum of the water return tube pass of each heat exchange unit are relatively close, and the inner diameters of the water inlet distribution tube and the water return distribution tube are regularly changed, so that the heat exchange efficiency of each heat exchange unit is favorably maintained at the same level. In addition, the number of the heat exchange units which are actually put into operation is controllable, and the water flow speed can be controlled at a higher level to ensure the heat exchange efficiency.
Description
Technical Field
The utility model relates to a gas steam combined cycle unit equipment field specifically is a combustion engine heat transfer device that admits air.
Background
The gas-steam combined cycle unit taking a gas turbine (hereinafter referred to as a combustion engine) as core equipment has the advantages of small occupied area, less pollution emission, high heat efficiency and the like, and is particularly suitable for constructing power plant generator units in densely populated areas. The unit generally comprises a gas engine inlet chamber, a gas engine, a waste heat boiler and other devices, in order to improve the operation performance of the combined cycle unit, an inlet gas heat exchanger is arranged in some gas engine inlet chambers, so that the efficiency of the combined cycle unit is improved by improving the inlet gas temperature of the gas engine under the partial load working condition, and the output power of the combined cycle unit is improved by reducing the inlet gas temperature of the gas engine under the full load working condition.
Because the size of the air inlet section of the air inlet chamber of the combustion engine is usually larger, the air inlet heat exchanger arranged in the air inlet chamber has a longer internal pipeline, so that the uniform heating or cooling of all parts of the air inlet section is difficult to ensure.
Disclosure of Invention
The utility model discloses a main aim at provides a can guarantee that the gas turbine air intake cross-section temperature is even everywhere gas turbine heat transfer device that admits air of gas turbine air intake chamber.
In order to achieve the above object, the utility model provides a combustion engine heat transfer device that admits air includes inlet tube subassembly, return water pipe assembly and heat transfer unit, and the inlet tube subassembly is including the female pipe of intaking, the intake of mutual intercommunication violently manage, two intake standpipe and two distribution pipes of intaking. The tip of female pipe of intaking is connected with the middle part of violently managing of intaking, and the end connection of violently managing of the standpipe lower extreme of intaking and intaking, and the standpipe upper end of intaking is connected with the distributing pipe upper end of intaking through the type of falling U elbow, and the distributing pipe of intaking is parallel and the lower extreme seals with the standpipe of intaking, sets up 3 at least branch pipes of intaking along length direction on the distributing pipe of intaking, and each branch pipe of intaking switches on with a heat transfer unit's water inlet.
The return pipe assembly comprises a return main pipe, a return transverse pipe and two return distributing pipes which are communicated with each other. The end part of the backwater main pipe is connected with the middle part of the backwater transverse pipe, the backwater distributing pipe extends along the vertical direction, the upper end of the backwater distributing pipe is sealed, the lower end of the backwater distributing pipe is connected with the end part of the water inlet transverse pipe, at least 3 backwater branch pipes are arranged on the backwater distributing pipe along the length direction, and each backwater branch pipe is communicated with a water outlet of one heat exchange unit.
In addition, the layout mode of the heat exchange units can ensure that the sum of the water inlet tube pass and the water return tube pass of each heat exchange unit is relatively close, and the on-way resistance loss of each heat exchange unit is controlled to be at the same level so as to avoid hydraulic unbalance, and further maintain the heat exchange efficiency of each heat exchange unit at the same level.
The further scheme is that a plurality of water inlet branch pipes are arranged on the water inlet distribution pipe at the same intervals, a plurality of water return branch pipes are arranged on the water return distribution pipe at the same intervals, and the interval between every two adjacent water inlet branch pipes is equal to the interval between every two adjacent water return branch pipes.
It can be seen from the above that, the water inlet branch pipes and the water return branch pipes are arranged at the same intervals, and the equal intervals between the water inlet branch pipes and the water return branch pipes are ensured, so that the sum of the water inlet pipe pass and the water return pipe pass of each heat exchange unit is equal, the on-way resistance loss of each heat exchange unit is also equal, the hydraulic unbalance can be avoided, and the heat exchange efficiency of each heat exchange unit is ensured to be basically consistent.
The further proposal is that the inner diameter of the water inlet distribution pipe is gradually decreased from top to bottom, and the inner diameter of the water return distribution pipe is gradually decreased from bottom to top.
It can be seen from above that, the pipeline that changes with the internal diameter rule is as intaking distributing pipe and return water distributing pipe and helps all controlling every heat exchange unit's entry discharge and export discharge at the same level, and then improves each heat exchange unit's heat exchange efficiency uniformity.
The further proposal is that each water inlet branch pipe is provided with a water inlet valve, and each water return branch pipe is provided with a water return valve.
Therefore, the heat exchange device can control the number of the heat exchange units which are actually put into operation by respectively arranging the water inlet valve and the water return valve at the water inlet end and the water return end of each heat exchange unit in the heat exchanger array, so that the water flow speed is maintained at a high level to ensure the heat transfer efficiency. The temperature of each part of the air inlet section can be ensured to be approximately at the same level by calling a plurality of heat exchange units with more balanced layout to participate in heat exchange.
The further proposal is that expansion joints are arranged on the water inlet horizontal pipe and the water return horizontal pipe.
Therefore, the expansion joint is introduced to reduce the damage of temperature difference stress to the water inlet pipeline and the water return pipeline, and the pipeline system of the heat exchange equipment is effectively protected.
The gas turbine inlet heat exchange device further comprises an exhaust assembly, the exhaust assembly comprises a vertically extending exhaust main pipe and at least 6 exhaust branch pipes arranged on the exhaust main pipe, each exhaust branch pipe connects the exhaust main pipe with an exhaust port of one heat exchange unit, the lower end of the exhaust main pipe is closed, and a release valve is arranged at the upper end of the exhaust main pipe.
Therefore, the exhaust system formed by the exhaust assembly can exhaust all the heat exchange units through one air release valve, so that the exhaust operation of the heat exchange device is greatly simplified.
Drawings
Fig. 1 is a structural view of an application state of an embodiment of the gas turbine inlet heat exchanger of the present invention.
Fig. 2 is a structural diagram of the intake air heat exchange device of the combustion engine of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 and 2, the utility model provides a combustion engine heat transfer device that admits air includes inlet tube subassembly 10, wet return subassembly 20 and heat transfer unit 30, and inlet tube subassembly 10 is including the female pipe 11 of intaking that communicates each other, intake violently manage 12, two intake standpipe 13 and two distribution pipes 14 that intake. The tip of female pipe 11 of intaking is connected with the middle part of violently managing 12 of intaking, and the end connection of violently managing 12 is managed with intaking to the standpipe 13 lower extreme of intaking, and the standpipe 13 upper end of intaking is connected with the distributing pipe 14 upper end of intaking through the type of falling U elbow, and the distributing pipe 14 of intaking is parallel and the lower extreme seals with the standpipe 13 of intaking, and the distributing pipe 14 of intaking goes up along length direction and sets up 3 at least branch pipes 15 of intaking, and each branch pipe 15 of intaking switches on with the water inlet of a heat transfer unit 30.
The return pipe assembly 20 comprises a return main pipe 21, a return transverse pipe 22 and two return distributing pipes 23 which are communicated with each other. The end part of the return water main pipe 21 is connected with the middle part of the return water transverse pipe 22, the return water distribution pipe 23 extends along the vertical direction, the upper end of the return water distribution pipe is closed, the lower end of the return water distribution pipe 23 is connected with the end part of the water inlet transverse pipe 22, at least 3 return water branch pipes 24 are arranged on the return water distribution pipe 23 along the length direction, and each return water branch pipe 24 is communicated with a water outlet of one heat exchange unit 30.
The intake section of the intake chamber 60 of the combustion engine is generally large in size, the heat exchange device is a heat exchanger array comprising at least 6 (3 rows and × 2 columns) heat exchange units 30, and the water inlet pipe assembly 10 and the water return pipe assembly 20 can ensure that all the heat exchange units 30 are in parallel connection, so that all the intake sections can be uniformly heated.
The water inlet tube passes of the heat exchange units 30 in the same row are sequentially increased from top to bottom, the water return tube passes are sequentially decreased progressively, and the water inlet tube passes and the water return tube passes of the two heat exchange units 30 at the same height are equal, so that the sum of the water inlet tube passes and the water return tube passes of each heat exchange unit 30 is relatively close to the sum of the water inlet tube passes and the water return tube passes of the two heat exchange units 30 at the same height, the on-way resistance loss of each heat exchange unit 30 is controlled to be at the same level, the hydraulic imbalance is avoided, and the heat exchange efficiency of each heat exchange unit 30 is maintained at the same level.
The plurality of water inlet branch pipes 15 are arranged on the water inlet distribution pipe 14 at the same interval, the plurality of water return branch pipes 24 are arranged on the water return distribution pipe 23 at the same interval, and the interval between two adjacent water inlet branch pipes 15 is equal to the interval between two adjacent water return branch pipes 24. The water inlet branch pipes 15 and the water return branch pipes 24 are arranged at the same intervals, and the equal intervals between the water inlet branch pipes 15 and the water return branch pipes 24 are ensured, so that the sum of the water inlet pipe pass and the water return pipe pass of each heat exchange unit 30 is equal, the on-way resistance loss of each heat exchange unit 30 is also equal, the hydraulic unbalance can be avoided, and the heat exchange efficiency of each heat exchange unit 30 is basically consistent.
The inner diameters of the water inlet distribution pipes 14 are gradually decreased from top to bottom, and the inner diameters of the water return distribution pipes 23 are gradually decreased from bottom to top. The pipes with regularly changed inner diameters are used as the water inlet distribution pipe 14 and the water return distribution pipe 23, which is helpful for controlling the inlet water flow and the outlet water flow of each heat exchange unit 30 at the same level, and further improving the consistency of the heat exchange efficiency of each heat exchange unit 30. Since the water flow directions in the inlet distribution pipe 14 and the return distribution pipe 23 are opposite, the inner diameter change laws of the inlet distribution pipe and the return distribution pipe are opposite.
Each water inlet branch pipe 15 is provided with a water inlet valve 16, and each water return branch pipe 24 is provided with a water return valve 25.
The heat transfer end difference is small when the air inlet of the combustion engine is cooled, and the heat transfer end difference is large when the air inlet of the combustion engine is heated, so that the water flow required by cooling the air inlet is far larger than the water flow required by heating the air inlet, and the air inlet heat exchanger needs to be designed according to the maximum water flow required in a cooling mode. Therefore, the water flow speed of the combustion engine in the air inlet cooling mode is relatively high, turbulent heat transfer with high heat exchange efficiency is easier to realize, but the water flow speed is low after the combustion engine is switched to the heating mode, the turbulent heat transfer is difficult to realize, and the heat transfer efficiency is low. In addition, even in the cooling mode, turbulent heat transfer is difficult to achieve with heat exchange devices when cooling load requirements are low.
The heat exchange device can control the number of the heat exchange units 30 which are actually put into operation by respectively arranging the water inlet valve 16 and the water return valve 25 at the water inlet end and the water return end of each heat exchange unit 30 in the heat exchanger array, so that the water flow speed is maintained at a high level to ensure the heat transfer efficiency. The temperature of all parts of the air inlet section can be ensured to be approximately at the same level by calling a plurality of heat exchange units 30 with more balanced layout to participate in heat exchange.
The horizontal water inlet pipe 12 and the horizontal water return pipe 22 are both provided with expansion joints 40, and the expansion joints 40 are introduced to reduce the damage of temperature difference stress to the water inlet pipe and the water return pipe, so that the pipeline system of the heat exchange equipment is effectively protected.
The intake heat exchange device of the combustion engine further comprises an exhaust assembly 50, wherein the exhaust assembly 50 comprises an exhaust main pipe 51 extending vertically and at least 6 exhaust branch pipes 52 arranged on the exhaust main pipe 51, each exhaust branch pipe 52 connects the exhaust main pipe 51 with an exhaust port of one heat exchange unit 30, the lower end of the exhaust main pipe 51 is closed, and the upper end of the exhaust main pipe 51 is provided with a release valve 53. The exhaust system formed by the introduction of the exhaust assembly 50 can exhaust all the heat exchange units 30 through one air relief valve 53, thereby greatly simplifying the exhaust operation of the heat exchange device.
In specific implementation, the combustion engine intake heat exchange device is arranged in the combustion engine intake chamber 60, an intake fine filter 61 is further arranged in the combustion engine intake chamber 60, and the intake fine filter 61 is closer to the combustion engine 70 than the intake heat exchange device in the intake direction.
The inlet heat exchange device of the combustion engine is suitable for a GE9351FA type combustion engine and comprises 10 (5 rows × 2 columns) heat exchange units 30 (for convenience of distinction, 10 heat exchange units 30 are numbered from 30a to 30j in figure 2), each heat exchange unit 30 is a set of heat exchange components comprising heat exchange tubes, a water inlet distribution tube 14 and a water return distribution tube 23 are formed by splicing a plurality of tube sections which are connected end to end, the inner diameters of the tube sections of the water inlet distribution tube 14 are sequentially reduced from top to bottom, the inner diameters of the tube sections of the water return distribution tube 23 are sequentially reduced from bottom to top, and expansion joints 40 are arranged at two ends of a transverse water inlet tube 12 and a transverse water return tube 22.
The design chilled water flow of the gas turbine inlet heat exchange device is 1000t/h, the water inlet pipe assembly 10, the water return pipe assembly 20 and the heat exchange units 30 are all designed according to the water flow of 1000t/h, the design water flow of each heat exchange unit 30 is 100t/h, the water flow speed is 2m/s, the Reynolds number representing the flow state is 6300, the water flow is kept in a turbulent flow state, and the heat exchange effect is good.
In most cases, the air inlet cooling device of the combustion engine does not need to run at full load, the cooling load is at a lower level, the flow rate of chilled water is 500t/h under typical working conditions, if all 10 heat exchange units 30 are put into use, the flow rate of each heat exchange unit is 50t/h, the speed of water flow in each heat exchange unit 30 is 1m/s, the Reynolds number is 3150, the water flow is in a transition state, and the heat exchange effect is reduced. At this time, the number of the actually called heat exchange units 30 can be adjusted to 5 (i.e. 30b, 30d, 30f, 30h and 30j in fig. 2) by opening and closing the water inlet valve 16 and the water return valve 25, the water flow of the heat exchange units 30 is adjusted to rise back to 100t/h, the reynolds number is recovered to 6300, the water flow is changed to a turbulent flow state, and the heat exchange efficiency can be greatly improved.
When the air inlet cooling device of the combustion engine runs under a lower cooling load, the cooling water flow is only 200t/h under a typical working condition, if all 10 heat exchange units 30 are put into use, the water flow of each heat exchange pipe group is 20t/h, the water flow speed in each heat exchange pipe group is 0.4m/s, the Reynolds number is 1260, the water flow is in a laminar flow state, and the heat exchange effect is greatly reduced. At this time, the number of the actually called heat exchange units 30 can be adjusted to 4 (i.e. 30b, 30d, 30g and 30i in fig. 2) by opening and closing the water inlet valve 16 and the water return valve 25, the water flow of the heat exchange units 30 after adjustment becomes 40t/h, the reynolds number is recovered to 2520, the water flow becomes a transition state, and the heat exchange efficiency is still obviously improved.
In addition think easily, the utility model discloses a design can also be applied to in the design layout of the heat exchanger array that the column number exceeds 2, therefore relevant heat transfer device scheme also should be regarded as falling in the utility model discloses a protection scope.
Claims (6)
1. The utility model provides a combustion engine heat transfer device that admits air, includes inlet tube subassembly, return water pipe assembly and heat transfer unit, its characterized in that:
the water inlet pipe assembly comprises a water inlet main pipe, a water inlet transverse pipe, two water inlet vertical pipes and two water inlet distribution pipes which are mutually communicated, the end part of the water inlet main pipe is connected with the middle part of the water inlet transverse pipe, the lower end of the water inlet vertical pipe is connected with the end part of the water inlet transverse pipe, the upper end of the water inlet vertical pipe is connected with the upper end of the water inlet distribution pipe through an inverted U-shaped elbow, the water inlet distribution pipe is parallel to the water inlet vertical pipe, the lower end of the water inlet distribution pipe is sealed, at least 3 water inlet branch pipes are arranged on the water inlet distribution pipe along the length direction, and each water inlet branch pipe is communicated with the water inlet of one heat exchange;
the water return pipe assembly comprises a water return main pipe, a water return transverse pipe and two water return distributing pipes which are communicated with each other, the end portion of the water return main pipe is connected with the middle portion of the water return transverse pipe, the water return distributing pipes extend in the vertical direction, the upper ends of the water return distributing pipes are sealed, the lower ends of the water return distributing pipes are connected with the end portion of the water inlet transverse pipe, at least 3 water return branch pipes are arranged on the water return distributing pipes along the length direction, and each water return branch pipe is communicated with a water outlet of one heat exchange unit.
2. A combustion engine inlet heat exchange device as claimed in claim 1, wherein:
many the branch pipe of intaking with the same interval set up in on the distributing pipe of intaking, many the return water branch pipe with the same interval set up in on the return water distributing pipe, and adjacent two the interval of branch pipe of intaking equals adjacent two the interval of return water branch pipe.
3. A combustion engine inlet heat exchange device as claimed in claim 1, wherein:
the internal diameter of inlet distribution pipe from top to bottom descends in proper order, the internal diameter of return water distribution pipe descends in proper order from bottom to top.
4. A combustion engine inlet heat exchange device as claimed in claim 1, wherein:
and each water inlet branch pipe is provided with a water inlet valve, and each water return branch pipe is provided with a water return valve.
5. A combustion engine inlet heat exchange device as claimed in claim 1, wherein:
and expansion joints are arranged on the water inlet transverse pipe and the water return transverse pipe.
6. A combustion engine inlet heat exchange device according to any one of claims 1 to 5, characterized in that:
the gas turbine inlet heat exchange device further comprises an exhaust assembly, the exhaust assembly comprises a vertically extending exhaust main pipe and at least 6 exhaust branch pipes arranged on the exhaust main pipe, each exhaust branch pipe connects the exhaust main pipe with one exhaust port of the heat exchange unit, the lower end of the exhaust main pipe is closed, and a release valve is arranged at the upper end of the exhaust main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921856155.XU CN210829419U (en) | 2019-10-30 | 2019-10-30 | Gas turbine inlet heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921856155.XU CN210829419U (en) | 2019-10-30 | 2019-10-30 | Gas turbine inlet heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210829419U true CN210829419U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921856155.XU Active CN210829419U (en) | 2019-10-30 | 2019-10-30 | Gas turbine inlet heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210829419U (en) |
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2019
- 2019-10-30 CN CN201921856155.XU patent/CN210829419U/en active Active
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