CN210584366U - General drying system of combustion engine - Google Patents
General drying system of combustion engine Download PDFInfo
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- CN210584366U CN210584366U CN201920995068.6U CN201920995068U CN210584366U CN 210584366 U CN210584366 U CN 210584366U CN 201920995068 U CN201920995068 U CN 201920995068U CN 210584366 U CN210584366 U CN 210584366U
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Abstract
The utility model provides a general drying system for a gas turbine, which is characterized by comprising a dryer, an air filter, an air pipe, a pneumatic stop valve, three temperature indicators, an air damper, a non-return air door and a control device; the dryer is provided with an air inlet, and the dryer is sequentially connected with an air filter and a pneumatic stop valve along the air inlet direction through an air pipe; the tail end of the air pipe far away from the dryer is connected to the combustion engine through an air suction pipeline of the air compressor; the exhaust pipeline is provided with an exhaust pipeline discharge valve; the control device is electrically connected with the exhaust valve of the air suction pipeline, and the control device is electrically connected with the pneumatic stop valve. The utility model discloses a can guarantee to pass through the air exhaust pipeline when the gas turbine shuts down and continuously carry the clean and dry air through the heating to the gas turbine is inside, make the gas turbine inside from inlet end to exhaust end to and the air conduit who links to each other with the body all keeps dry state, thereby improves the gas turbine reliability.
Description
Technical Field
The utility model relates to a dry technical field of the gas turbine especially relates to a general drying system of gas turbine.
Background
After long-term shutdown maintenance or offline water washing, the interior of the combustion engine is filled with humid air, which is particularly evident in southern and coastal areas. The presence of moist air inside has a number of adverse effects on the overall performance and reliability of the combustion engine, and eventually failures, including the following:
in areas with large day-night temperature difference in winter, if the shutdown time is long, the humid air inside the air inlet channel is easy to be cooled to form condensed water and further condensed into ice blocks. When the unit is restarted, part of ice blocks enter the compressor chamber along with airflow and impact the first-stage movable blades of the compressor, so that the blades are damaged.
After an off-line water washing is carried out on a combustion engine of a certain project, moist air is not removed in time, residual moisture is accumulated near a blade assembly hole at the bottom of an air compressor, and the rotating part of an adjustable blade is rusted and stuck, so that the angle of the blade is staggered when a unit operates, and finally the blade is broken.
After long-term shutdown, the TCA pipeline filled with humid air inevitably generates water accumulation, and serious humid air can cause oxidation and corrosion of the inner wall of the pipeline. And part of the falling rusty slag enters the turbine side of the combustion engine through a TCA pipeline to block a turbine blade cooling hole, so that the blade is burnt out due to over-temperature.
In addition, the salt content in the humid air in southern coastal areas is high, meanwhile, the combustion engine is usually positioned in a chemical engineering area, the air contains acidic substances, and when the humid air with the components is positioned in the combustion engine for a long time, the inner wall of a cylinder body, a wheel disc and blades which are in full contact with the humid air have the risk of rusting and corroding.
In order to solve the problems, methods such as filling nitrogen or compressed air, corrosion prevention of pipeline coatings, improvement of body materials, optimization of a drainage system and the like are generally adopted at present, but the effects are general and the cost is high. Other related patents include a combustion engine dehumidification structure (application number 201610650738.1) and an application of the combustion engine dehumidification structure and a dehumidifier in a combustion engine and a dehumidification control method thereof (application number 201620861007.7), but the dehumidification method is not suitable for the combustion engine without a TCA cooling system, and only can locally dry a TCA pipeline, so that the universality and the integrity are lacked.
Therefore, in order to more effectively prevent and treat the adverse effect that humid air caused inside the combustion engine and the surrounding air pipeline system, the utility model discloses carry out the design improvement based on prior art, provide a general drying system of various types of combustion engines.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned not enough that prior art exists, the utility model discloses insert one set of fixed drying system on gas turbine compressor bleed-off line, continuously carry the clean dry air through the heating to the gas turbine inside through bleed-off line when the gas turbine stops, make the gas turbine inside from inlet end to exhaust end to and the air conduit who links to each other with the body all keeps dry state, thereby improve the gas turbine reliability.
The utility model provides a technical scheme which is a general drying system for a gas turbine, comprising a dryer, an air filter, an air pipe, a pneumatic stop valve, a temperature indicator, an air damper, a non-return air door and a control device; the dryer is provided with an air inlet, and the dryer is sequentially connected with an air filter and a pneumatic stop valve along the air inlet direction through an air pipe; the tail end of the air pipe far away from the dryer is connected to the combustion engine through an air suction pipeline of the air compressor; the exhaust pipeline is provided with an exhaust pipeline discharge valve; the control device is electrically connected with the exhaust valve of the air suction pipeline and the pneumatic stop valve;
an air pipe between the air filter and the pneumatic stop valve is sequentially provided with a regulating air door, a non-return air door and a temperature indicator along the air inlet direction; the control device is electrically connected with the temperature indicator and the air damper; the three temperature indicators are distributed on a pipeline at the air inlet end of the pneumatic stop valve, when the temperature of any two temperature indicators in the three temperature indicators is too high, the three temperature indicators send alarm signals to indicate that the pneumatic stop valve breaks down, and the control device controls the adjusting air door to automatically reduce the opening degree, so that high-temperature gas is discharged from the check air door.
Preferably, the dryer is a rotary wheel dryer, a circulating pipeline is arranged on the rotary wheel dryer, the circulating pipeline penetrates through the rotary wheel dryer, process gas is introduced into an inlet of the circulating pipeline, and regenerated gas is discharged from an outlet of the circulating pipeline.
Preferably, an air inlet pipe is arranged on an air inlet of the rotary wheel type dryer, an air inlet head is sleeved at an air inlet end of the air inlet pipe, the air inlet head is of a conical cylinder structure, the caliber of the air inlet head gradually decreases along the air inlet direction, and a circular ring is further sleeved at the air inlet end of the air inlet head.
Preferably, the check damper is of a disc-shaped configuration; the air damper is of a circular ring structure, and the air damper is sleeved on the second air pipe.
Preferably, the air ducts comprise a first air duct, a second air duct, a third air duct and a fourth air duct; the first air pipe, the second air pipe, the third air pipe and the fourth air pipe are sequentially connected, and the first air pipe is communicated with an air inlet of the dryer;
the first air pipe is vertically arranged, the second air pipe is horizontally arranged, the third air pipe is vertically arranged, the first air pipe, the second air pipe and the third air pipe are on the same horizontal plane, and the fourth air pipe extends horizontally outwards along the vertical direction of the horizontal plane.
Preferably, the second air pipe is provided with an air adjusting door and a non-return air door; a pneumatic stop valve and three temperature indicators are arranged on the fourth air pipe;
an air filter is arranged between the first air pipe and the second air pipe.
Preferably, air cleaner includes 2 supports, 2 link, air cleaner body is the cuboid structure, 2 supports set up respectively at air cleaner body's both ends, 2 link respectively embedded in air cleaner body's both sides face.
Preferably, the 2 connecting ends are respectively sleeved on the first air pipe and the second air pipe at the end far away from the air filter body.
Preferably, the connecting end is of a square cone structure, and the caliber of the connecting end is gradually reduced along the direction far away from the air filter body.
Preferably, the bracket is a frame extending vertically upwards and used for fixing and hoisting the air filter.
Preferably, the dryer is a rotary wheel dryer, the operating power is 2.05-22kW, the rated air volume is 180-3000m3/h, and the filtration grade is G2-G4, which is selected according to actual requirements.
Preferably, the rotating speed of the rotary wheel type dryer is 8-14r/h, and is selected according to actual requirements.
Preferably, the air filter is a hanging bag filter, the filtering grade is F9-H11, and the air filter is selected according to actual requirements.
Preferably, the air duct is made of galvanized steel sheets.
Preferably, an intake side and an exhaust side are provided on the combustion engine.
Preferably, the through diameter phi of the damper can be 100-1000mm, and the flow rate is 150-2800m3/h, which are selected according to actual requirements.
Preferably, the pneumatic stop valve that this application provided is butterfly valve structure, through flange joint on the tuber pipe. The pneumatic stop valve mainly comprises a valve body, a butterfly plate, a valve shaft, a sealing ring, a driving device and other parts. The valve body is cylindrical, a butterfly plate is arranged in the valve body, the butterfly plate is connected with the valve shaft through a flat key, and the driving device is installed on the connecting side of the end cover and drives the valve shaft to rotate for 90 degrees, so that the butterfly plate is opened and closed.
Compared with the prior art, the utility model discloses the beneficial effect who produces is:
(1) the utility model provides an external drying system on compressor bleed-off line, this technical scheme is applicable to various combustion engines.
(2) The utility model provides a drying system can make the internal combustion engine inside from the side of admitting air to the side of exhausting to and the tuber pipe that links to each other with the drying system body all is in the dry condition, avoids appearing because of the various adverse effects that spare part corrosion produced.
(3) The utility model provides a temperature indicator among drying system has the function that detects pneumatic valve leakage, and during the combustion engine operation, when two arbitrary demonstration temperatures among the three temperature indicator were too high, alarm signal can be sent. And at the moment, the pneumatic stop valve is in fault and leaks, and in order to prevent high-temperature gas from the gas compressor from entering a drying system air pipe, the opening of the air adjusting door is automatically adjusted to be small, so that the high-temperature gas is discharged from the non-return air door, and the filter and the dryer are protected from being influenced by the high-temperature gas.
(4) The utility model provides an air inlet is a awl section of thick bamboo structure, is favorable to the air to better inhale.
Drawings
FIG. 1 is a schematic diagram of a drying system;
FIG. 2 is a schematic diagram of a drying system according to a preferred embodiment;
the specific meanings of the symbols in the drawings are as follows:
1: a dryer; 2: an air duct; 3: an air filter; 4: an air damper; 5: a non-return air door; 6: a temperature indicator; 7: a pneumatic stop valve; 8: a circulation pipe; 9: an air inlet pipe; 10: an air inlet head; 11: a first air duct; 12: a second air duct; 13: a third air duct; 14: a fourth air duct; 15: an air filter body; 16: a support; 17: a connecting end; 18: a circular ring; 19. a compressor; 20. a combustion chamber.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The utility model provides a general drying system of combustion engine carries the clean dry air through the heating to combustion engine inside continuously through the bleed-off line when the combustion engine stops, makes the combustion engine inside from inlet end to exhaust end to and the air conduit who links to each other with the body all keeps dry state, prevents above-mentioned unfavorable condition, thereby improves the combustion engine reliability.
Referring to fig. 1, a general drying system for a combustion engine comprises a dryer 1, an air filter 3, an air pipe 2, a pneumatic stop valve 7, a temperature indicator 6, a damper 4, a check damper 5 and a control device; the dryer 1 is provided with an air inlet, and the dryer 1 is sequentially connected with an air filter 3 and a pneumatic stop valve 7 along the air inlet direction through an air pipe 2; the tail end of the air pipe 2 far away from the dryer 1 is connected with a combustion engine through an air suction pipeline of the air compressor; the exhaust pipeline is provided with an exhaust pipeline discharge valve; the control device is electrically connected with the exhaust valve of the air suction pipeline, and the control device is electrically connected with the pneumatic stop valve 7; wherein the air inlet air source on the dryer of the utility model is from the atmosphere.
Wherein, the air pipe 2 between the air filter 3 and the pneumatic stop valve 7 is provided with an air adjusting door 4, a non-return air door 5 and a temperature indicator 6 in sequence along the air inlet direction; the control device is electrically connected with the temperature indicator and the air damper; the number of the temperature indicators is 3; the gas inlet end of the pneumatic stop valve is connected with the gas inlet end of the pneumatic stop valve; when the temperature of any two temperature indicators in the temperature indicators is too high, the temperature indicators send alarm signals, the pneumatic stop valve breaks down, and the control device controls the air damper to automatically reduce the opening degree, so that high-temperature gas is discharged from the non-return air damper.
The utility model provides a gas turbine which is provided with an air inlet side and an air outlet side; when the gas turbine is shut down, the air inlet side and the air outlet side are both positive pressure compared with the external atmosphere, so that dry air continuously introduced from an air exhaust pipeline of the gas compressor can be divided into a front path and a rear path, the dry air respectively flows to the air inlet side and the air outlet side to replace the humid air in the gas turbine, so that the whole body in the gas turbine and the air pipeline connected with the body form and keep a dry state, the situation that parts are rusted and corroded is effectively prevented, the overall maintenance cost of the gas turbine is reduced, the risk of failure is reduced, and the operation reliability of the gas turbine is improved.
Wherein, the utility model provides a desiccator 1 is runner type desiccator, is provided with circulating line 8 on the runner type desiccator, circulating line passes runner type desiccator, and the circulating line import lets in the technology gas, and the outlet of circulating line discharges the regeneration gas. An air inlet pipe 9 is arranged on an air inlet of the rotary wheel type dryer 1, an air inlet head 10 is sleeved at an air inlet end of the air inlet pipe 9, the air inlet head 10 is of a conical-cylinder horn-shaped structure, and a circular ring 18 is further sleeved at the air inlet end of the air inlet head 10. The function of the air inlet head is to facilitate better air suction.
As preferred embodiment, the utility model provides a pneumatic stop valve is the butterfly valve structure, through flange joint on the tuber pipe. The pneumatic stop valve mainly comprises a valve body, a butterfly plate, a valve shaft, a sealing ring, a driving device and other parts. The valve body is cylindrical, a butterfly plate is arranged in the valve body, the butterfly plate is connected with the valve shaft through a flat key, and the driving device is installed on the connecting side of the end cover and drives the valve shaft to rotate for 90 degrees, so that the butterfly plate is opened and closed.
As a preferred embodiment, the utility model provides a non-return air door 5 is disc-shaped structure; the air damper 4 is of a circular ring structure, and the air damper 4 is sleeved on the second air pipe. The non-return air door 5 and the adjusting air door 4 of the structure enable adjustment to be more convenient.
As a preferred embodiment, the air duct 2 provided by the present invention comprises a first air duct 11, a second air duct 12, a third air duct 13, and a fourth air duct 14; the first air duct 11, the second air duct 12, the third air duct 13 and the fourth air duct 14 are connected in sequence, and the first air duct 11 is communicated with an air inlet of the dryer 1;
the first air pipe 11 is vertically arranged, the second air pipe 12 is horizontally arranged, the third air pipe 13 is vertically arranged, the first air pipe 11, the second air pipe 12 and the third air pipe 13 are on the same horizontal plane, and the fourth air pipe 14 extends horizontally outwards in the vertical direction of the horizontal plane.
The second air pipe 12 is provided with an air adjusting door and a non-return air door; the fourth air pipe 14 is provided with a pneumatic stop valve 7 and three temperature indicators 6; an air filter 3 is arranged between the first air duct 11 and the second air duct 12.
As preferred embodiment, the utility model provides an air cleaner includes 2 supports 16, 2 link 17, air cleaner body 15 is the cuboid structure, 2 supports 16 set up respectively at air cleaner body 15's both ends, 2 link 17 respectively embedded in air cleaner body 15's both sides face.
Wherein, 2 one ends of the connecting ends 17 far away from the air filter body 15 are respectively sleeved on the first air pipe 11 and the second air pipe 12.
Specifically, the link is the square pyramid structure, the bore of link diminishes gradually along the direction of keeping away from the air cleaner body. Just the utility model provides a support is the vertical frame that upwards extends for fixed hoist and mount air cleaner.
Wherein, the utility model provides an equipment parameter such as desiccator power and flow, tuber pipe diameter, air damper size can be confirmed according to actual combustion engine model and the unit field layout condition.
Wherein, the drying machine provided by the utility model can be a rotary wheel type drying machine, the running power of the rotary wheel type drying machine is 2.05-22kW, and the rated air volume is 180-3000m3The filtration grade is G2-G4, the rotating speed can be 8-14r/h, and the filtration grade is selected according to actual requirements.
Wherein, the air filter can be a hanging bag type filter, the filtering grade can be F9-H11, and the air filter is selected according to actual requirements.
When the drying system is in operation, air is sucked into the dryer 1 through the fan to remove water vapor and small liquid droplets, then flows through the filter to remove solid small particles and impurities, generates clean and dry process gas, and enters the internal part of the combustion engine 20 through the air suction pipeline of the compressor 19.
The utility model provides a drying system links to each other with combustion engine control logic, and after the combustion engine shutdown barring was ended, bleed line blow-off valve self-closing, drying system received the signal that comes from control system, and pneumatic stop valve is automatic to be opened, and the desiccator drops into and continuously operates automatically simultaneously. Before the combustion engine is started again, the drying system will receive a signal from the control system, the pneumatic stop valve 7 is automatically closed, and the dryer 1 is automatically stopped.
The utility model provides a temperature indicator among drying system has the function that detects pneumatic valve leakage, and during the combustion engine operation, when two arbitrary display temperature in three temperature indicator 6 were too high, alarm signal can be sent. At the moment, the pneumatic stop valve 7 is in fault and leaks, and in order to prevent high-temperature gas from the air compressor from entering an air pipe of the drying system, the opening of the air adjusting door 4 is automatically adjusted to be small, so that the high-temperature gas is discharged from the non-return air door 5, and the air filter 3 and the dryer 1 are protected from being influenced by the high-temperature gas.
Example 1
Referring to fig. 2, fig. 2 is a schematic diagram of a drying system according to a preferred embodiment; the utility model provides a desiccator 1 that drying system used is the runner type desiccator, and operating power 7.82kW, rated wind 690m3H, filter grade G3, and the dryer 1 is placed on a lubricating oil station next to the combustion engine, inside the engine housing. The air filter is a hanging bag filter, filter grade F9. The drift diameter of the damper 4 is 200mm, and the design flow is 550m3H is used as the reference value. The air pipe 2 is made of galvanized steel sheets and is connected and fixed on the gas turbine housing by using blind rivets. And when the combustion engine is stopped until turning is finished, the system is automatically put into operation. The drying rotating wheel is driven by a motor to rotate at a low speed of 12r/h, the process gas is dried by the rotating wheel and finely filtered by a filter, then enters the internal part of the combustion engine through an air pipe 2, and meanwhile, the regenerated gas is heated to take away the water of the rotating wheel and is discharged into the atmosphere. The process gas and the regeneration gas form a drying cycle through the rotating wheel, and the air entering the internal part of the combustion engine is ensured to be enough to meet the drying requirement.
The drying system in the embodiment is used in the south coastal areas, before the drying system in the embodiment is not used, the corrosion condition occurs in the internal part of the combustion engine, and the overhaul finds that the corrosion is timely and larger fault is not caused. After the drying system provided by the embodiment is used, the corrosion condition is obviously improved, so that the overhauling and stopping time is obviously reduced, the maintenance cost is reduced, and the reliability of the combustion engine is improved.
The above-mentioned series of detailed descriptions are only specific to the feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all the changes made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A general drying system for a gas turbine is characterized by comprising a dryer, an air filter, an air pipe, a pneumatic stop valve, a temperature indicator, a regulating air door, a non-return air door and a control device; the dryer is provided with an air inlet, and the dryer is sequentially connected with an air filter and a pneumatic stop valve along the air inlet direction through an air pipe; the tail end of the air pipe far away from the dryer is connected to the combustion engine through an air suction pipeline of the air compressor; the exhaust pipeline is provided with an exhaust pipeline discharge valve; the control device is electrically connected with the exhaust valve of the air suction pipeline and the pneumatic stop valve;
an air pipe between the air filter and the pneumatic stop valve is sequentially provided with a regulating air door, a non-return air door and a temperature indicator along the air inlet direction; the control device is electrically connected with the temperature indicator and the air damper; the three temperature indicators are distributed on a pipeline at the air inlet end of the pneumatic stop valve, when the temperature of any two temperature indicators in the three temperature indicators is too high, the three temperature indicators send alarm signals to indicate that the pneumatic stop valve breaks down, and the control device controls the adjusting air door to automatically reduce the opening degree, so that high-temperature gas is discharged from the check air door.
2. The universal drying system for the gas turbine as claimed in claim 1, wherein the dryer is a rotary wheel dryer, the rotary wheel dryer is provided with a circulating pipeline, the circulating pipeline passes through the rotary wheel dryer, the inlet of the circulating pipeline is filled with the process gas, and the outlet of the circulating pipeline is exhausted with the regeneration gas.
3. The universal drying system for the gas turbine as claimed in claim 2, wherein an air inlet pipe is arranged on the air inlet of the rotary wheel type dryer, an air inlet head is sleeved on the air inlet end of the air inlet pipe, the air inlet head is of a conical cylinder structure, the caliber of the air inlet head is gradually reduced along the air inlet direction, and a circular ring is further sleeved on the air inlet end of the air inlet head.
4. The universal drying system for a combustion engine as set forth in claim 1, wherein said air ducts comprise a first air duct, a second air duct, a third air duct, a fourth air duct; the first air pipe, the second air pipe, the third air pipe and the fourth air pipe are sequentially connected, and the first air pipe is communicated with an air inlet of the dryer;
the first air pipe is vertically arranged, the second air pipe is horizontally arranged, the third air pipe is vertically arranged, the first air pipe, the second air pipe and the third air pipe are on the same horizontal plane, and the fourth air pipe extends outwards along the vertical direction of the horizontal plane.
5. The universal drying system for a combustion engine as set forth in claim 1, wherein said check damper is of a disc-shaped configuration; the air damper is of a circular ring structure, and the air damper is sleeved on the second air pipe.
6. The universal drying system for the gas turbine as claimed in claim 4, wherein the second air pipe is provided with a damper and a check damper; a pneumatic stop valve and three temperature indicators are arranged on the fourth air pipe; an air filter is arranged between the first air pipe and the second air pipe.
7. The universal drying system for the gas turbine as claimed in claim 1, wherein the air filter comprises 2 brackets, 2 connecting ends and an air filter body, the air filter body is of a rectangular parallelepiped structure, the 2 brackets are respectively arranged at two ends of the air filter body, and the 2 connecting ends are respectively embedded in two side surfaces of the air filter body.
8. The universal drying system for gas turbines as claimed in claim 7, wherein the 2 ends of the connecting ends, which are far away from the air filter body, are respectively sleeved on the first air pipe and the second air pipe.
9. The universal drying system for a gas turbine as claimed in claim 7, wherein the connecting end is of a square cone structure, and the caliber of the connecting end is gradually reduced along a direction away from the air filter body.
10. The universal drying system for gas turbines as recited in claim 7, wherein said bracket is a vertically upwardly extending frame for securing a hanging air filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995068.6U CN210584366U (en) | 2019-06-28 | 2019-06-28 | General drying system of combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995068.6U CN210584366U (en) | 2019-06-28 | 2019-06-28 | General drying system of combustion engine |
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| Publication Number | Publication Date |
|---|---|
| CN210584366U true CN210584366U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920995068.6U Active CN210584366U (en) | 2019-06-28 | 2019-06-28 | General drying system of combustion engine |
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| Country | Link |
|---|---|
| CN (1) | CN210584366U (en) |
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2019
- 2019-06-28 CN CN201920995068.6U patent/CN210584366U/en active Active
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Address after: No. 357, Shiqiao Road, Shiqiao Street, Xiacheng District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Steam Turbine Holding Co.,Ltd. Address before: No. 357, Shiqiao Road, Shiqiao Street, Xiacheng District, Hangzhou City, Zhejiang Province, 310000 Patentee before: HANGZHOU TURBINE POWER GROUP CO.,LTD. |