CN220152489U - TCA water supply control system for fuel cell power plant - Google Patents
TCA water supply control system for fuel cell power plant Download PDFInfo
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- CN220152489U CN220152489U CN202320735619.1U CN202320735619U CN220152489U CN 220152489 U CN220152489 U CN 220152489U CN 202320735619 U CN202320735619 U CN 202320735619U CN 220152489 U CN220152489 U CN 220152489U
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- hydraulic
- door
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000000446 fuel Substances 0.000 title claims abstract description 11
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping 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 discloses a TCA water supply control system for a fuel cell power plant, which comprises a TCA cooler, wherein an air inlet of the TCA cooler is connected with an air extraction opening of an air compressor, an air outlet of the TCA cooler is connected with a turbine rotor of the fuel cell power plant, an air inlet of the TCA cooler is connected with a water supply pump of a high-pressure boiler, a water outlet of the TCA cooler is connected with a first branch and a second branch, the first branch is connected with a high-pressure steam drum, the second branch is connected with a high-pressure drain expansion vessel, a hydraulic adjusting door is arranged on the second branch, a hydraulic stop door is arranged on the rear side of the hydraulic adjusting door, and a first electromagnetic valve and a second electromagnetic valve are respectively arranged on oil inlet pipelines of the hydraulic adjusting door and the hydraulic stop door. The TCA water supply control system for the fuel cell power plant has the advantages of low cost investment, high operation reliability, convenient overhaul and maintenance and capability of greatly improving the operation efficiency of the unit.
Description
Technical Field
The utility model relates to the technical field of auxiliary devices for coal-fired power generation, in particular to a TCA water supply control system for a fuel gas electric power plant.
Background
In the prior art, during normal operation of a gas turbine, the turbine rotor and the turbine blades exposed to the high temperature gas must be cooled by turbine cooling air. The cooling air is pumped out from the air pumping port of the air compressor, cooled by the TCA cooler and sent to the front of the turbine rotor and/or the blades. The TCA cooler uses feed water from a high pressure boiler feed water pump as a cooling medium, and this portion of the water is heated in the TCA cooler and eventually enters the high pressure drum.
When the unit is started or stopped, because the water consumption of the high-pressure steam drum is low at the moment, if the high-pressure steam drum is directly supplied with water, serious accidents of damage of the high-pressure steam drum can be caused, so that in order to ensure the cooling effect and the high-pressure steam drum is not damaged, a pipeline is introduced into the water outlet side of the TCA cooler to reach the high-pressure drainage expansion vessel of the steam turbine, and finally the steam turbine enters the condenser for circulation.
Because the dynamic change is always in during starting and stopping, the prior art design is provided with a pneumatic adjusting door before entering the high-pressure drainage expansion vessel, the signal of the adjusting door depends on the temperature measuring point of the steam side outlet of the TCA cooler, and when the detected temperature is higher or lower than the set temperature of 200, the flow is controlled by adjusting the opening of the door, so that the cooling effect is ensured to be in a reasonable interval range.
Because the normal operation of the water supply pressure can reach 16Mpa, namely, the water supply pressure can reach more than 10Mpa in the normal start-stop stage, the erosion of the valve core and the valve seat of the adjusting door is serious, and the safety and the stability of the unit are seriously affected.
Disclosure of Invention
The utility model aims to provide a TCA water supply control system for a fuel cell power plant, which aims to solve the problems in the prior art and improve the safety and stability of unit operation.
The purpose of the utility model is realized in the following way: the utility model provides a TCA feedwater control system of gas turbine power plant, including the TCA cooler, TCA cooler air inlet is connected with the compressor extraction opening, TCA cooler gas outlet is connected with the turbine rotor of gas turbine, TCA cooler water inlet is connected with high-pressure boiler feed pump, TCA cooler delivery port is connected with first branch road and second branch road, first branch road is connected with high-pressure steam pocket, the second branch road is connected with high-pressure drainage dilatation ware, be equipped with fluid pressure type adjustment door on the second branch road, fluid pressure type adjustment door rear side is equipped with fluid pressure type and cuts off the door, fluid pressure type adjustment door and fluid pressure type cut off have first solenoid valve and second solenoid valve respectively on the oil feed pipeline of door.
According to the TCA water supply control system for the fuel cell factory, the hydraulic adjusting door is changed from pneumatic to hydraulic, so that the switching moment is increased, the service life of the adjusting door is prolonged, and the hydraulic stop door is arranged behind the adjusting door, so that when the adjusting door is in a closed position, the stop door is fully closed; when the adjusting door starts to act, the stop door is fully opened at the moment, and the stop door is always at the fully opened position as long as the adjusting door does not reach the fully closed position. Thereby realizing the following steps: (1) an isolation system to facilitate adjustment of door access; (2) The adjusting door is protected, long-term scouring damage is avoided, and cost is saved; and (3) the system stability is increased, and the energy consumption is saved. In conclusion, the TCA water supply control system for the fuel cell power plant has the advantages of low cost investment, simple use, safety and stability, and can greatly improve the running efficiency of the unit.
As a further improvement of the utility model, the hydraulic adjusting door comprises a closed valve body, an inverted U-shaped valve sleeve seal is arranged in the valve body in a buckled manner, a valve core is arranged below the valve sleeve seal, the valve core is connected with the valve sleeve through a spring, a groove is arranged below the valve body corresponding to the valve core, a valve rod sequentially penetrates through the valve body and the valve sleeve seal to be connected with the valve sleeve, the upper end of the valve rod is connected with a hydraulic device, a water inlet is arranged at one side of the valve body, a water outlet is arranged at the bottom of the valve body, and the water outlet is communicated with the groove. Through improving the adjustment door structure, set up the spring between valve pocket and case for the case can be directly withstood by the spring at terminal stroke, and through addding the valve pocket seal, is used for cutting off whole rivers, protection case, avoid blowing loss. When the hydraulic adjusting door needs to be opened, the valve rod drives the valve sleeve to seal and the valve sleeve to move upwards, and the valve core needs to release spring force first and then to be opened, so that instant impact can be prevented during starting.
As a further improvement of the utility model, the valve core is made of elastic materials and is in a trapezoid shape with wide upper part and narrow lower part, the width of the lower side of the trapezoid is smaller than the width of the groove, and the width of the upper side of the trapezoid is larger than the width of the groove. Therefore, when the hydraulic adjusting door needs to be closed, the valve rod drives the valve sleeve to seal and move downwards, the valve sleeve seals against the bottom of the valve body, water flow is cut off, and the valve core is pressed downwards into the groove to seal thoroughly.
As a further improvement of the utility model, the first electromagnetic valve and the second electromagnetic valve are connected with the control system, so that the control system can automatically control the hydraulic adjusting door and the hydraulic stop door according to the temperature value fed back by the temperature measuring point of the steam side outlet of the TCA cooler, thereby improving the efficiency.
As a further improvement of the utility model, the pressure sensor is arranged on the second branch, and the pressure sensor is connected with the control system, so that the control system can conveniently monitor the pressure of the second branch in real time, and the hydraulic adjusting door and the hydraulic stop door can be controlled according to the monitoring condition, thereby further improving the safety and stability of the operation of the unit.
Drawings
FIG. 1 is a schematic diagram of a TCA feedwater control system for a fuel cell plant of the present utility model.
Fig. 2 is a schematic diagram of the internal structure of a hydraulic control door of the TCA feedwater control system for a fuel cell plant according to the present utility model.
The valve comprises a 1 TCA cooler, a 2 hydraulic adjusting door, a 3 hydraulic stop door, a 4 first electromagnetic valve, a 5 second electromagnetic valve, a 6 pressure sensor, a 7 valve body, an 8 valve sleeve seal, a 9 valve sleeve, a 10 spring, an 11 valve core, a 12 valve rod, a 13 water inlet and a 14 water outlet.
Description of the embodiments
The TCA water supply control system of the gas turbine power plant shown in the figure 1 comprises a TCA cooler 1, an air inlet of the TCA cooler 1 is connected with an air extraction opening of a gas compressor, an air outlet of the TCA cooler 1 is connected with a turbine rotor of the gas turbine, a water inlet of the TCA cooler 1 is connected with a water supply pump of a high-pressure boiler, a water outlet of the TCA cooler 1 is connected with a first branch and a second branch, the first branch is connected with a high-pressure steam drum, the second branch is connected with a high-pressure drain expansion vessel, a hydraulic adjusting door 2 is arranged on the second branch, a hydraulic stop door 3 is arranged on the rear side of the hydraulic adjusting door 2, and a first electromagnetic valve 4 and a second electromagnetic valve 5 are respectively arranged on oil inlet pipelines of the hydraulic adjusting door 2 and the hydraulic stop door 3. The first electromagnetic valve 4 and the second electromagnetic valve 5 are connected with a control system, so that the control system can automatically control the hydraulic adjusting door 2 and the hydraulic stop door 3 according to the temperature value fed back by the temperature measuring point of the steam side outlet of the TCA cooler 1, and the efficiency is improved.
The second branch is also provided with a pressure sensor 6, the pressure sensor 6 is connected with a control system, the control system is convenient to monitor the pressure of the second branch in real time, and the hydraulic adjusting door 2 and the hydraulic stop door 3 are controlled according to the monitoring condition, so that the safety and stability of the operation of the unit are further improved.
According to the TCA water supply control system of the gas turbine power plant, the hydraulic adjusting door 2 is changed from pneumatic to hydraulic, so that the switching moment is increased, the service life of the adjusting door is prolonged, and the hydraulic stop door 3 is arranged behind the adjusting door, when the adjusting door is in a closed position, the stop door is fully closed at the moment; when the adjusting door starts to act, the stop door is fully opened at the moment, and the stop door is always at the fully opened position as long as the adjusting door does not reach the fully closed position. Thereby realizing the following steps: (1) an isolation system to facilitate adjustment of door access; (2) The adjusting door is protected, long-term scouring damage is avoided, and cost is saved; and (3) the system stability is increased, and the energy consumption is saved.
As shown in fig. 2, the hydraulic adjusting door 2 comprises a closed valve body 7, an inverted U-shaped valve sleeve seal 8 is buckled in the valve body 7, an inverted U-shaped valve sleeve 9 is arranged in the valve sleeve seal 8, a valve core 11 is arranged below the valve sleeve 9, and the valve core 11 is connected with the valve sleeve 9 through a spring 10. The valve body 7 is provided with a groove corresponding to the lower part of the valve core 11, the valve rod 12 sequentially penetrates through the valve body 7 and the valve sleeve seal 8 to be connected with the valve sleeve 9, and the upper end of the valve rod 12 is connected with a hydraulic device (namely, the valve rod 12 is a hydraulic push rod capable of moving in an extending and contracting mode). One side of the valve body 7 is provided with a water inlet 13, the bottom is provided with a water outlet 14, and the water outlet 14 is communicated with the groove. Through improving the adjustment door structure, set up spring 10 between valve pocket 9 and case 11 for case 11 can directly be withstood by spring 10 at terminal stroke, and through addding valve pocket seal 8, is used for cutting off whole rivers, protection case 11 avoids blowing loss. When the hydraulic adjusting door 2 needs to be opened, the valve rod 12 drives the valve sleeve seal 8 and the valve sleeve 9 to move upwards, and the valve core 11 needs to release the force of the spring 10 before being opened, so that instant impact can be prevented during starting.
The valve core 11 is made of elastic materials and is in a trapezoid shape with a wide upper part and a narrow lower part, the width of the lower side of the trapezoid is smaller than the width of the groove, and the width of the upper side of the trapezoid is larger than the width of the groove. Therefore, when the hydraulic adjusting door 2 needs to be closed, the valve rod 12 drives the valve sleeve seal 8 and the valve sleeve 9 to move downwards, the valve sleeve seal 8 abuts against the bottom of the valve body 7, water flow is cut off, and the valve core 11 is pressed downwards to enter the groove to be thoroughly sealed.
In conclusion, the TCA water supply control system for the gas turbine power plant has the advantages of low cost investment, simple use, safety and stability, and can greatly improve the running efficiency of the unit.
The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.
Claims (5)
1. The utility model provides a TCA feedwater control system of gas turbine power plant, includes the TCA cooler, TCA cooler air inlet is connected with the compressor extraction opening, the TCA cooler gas outlet is connected with the gas turbine rotor, TCA cooler water inlet is connected with high-pressure boiler feed pump, TCA cooler delivery port is connected with first branch road and second branch road, first branch road is connected with high-pressure steam pocket, the second branch road is connected with high-pressure drainage expander, its characterized in that: the second branch is provided with a hydraulic adjusting door, the rear side of the hydraulic adjusting door is provided with a hydraulic stop door, and the oil inlet pipelines of the hydraulic adjusting door and the hydraulic stop door are respectively provided with a first electromagnetic valve and a second electromagnetic valve.
2. The TCA feedwater control system of a gas turbine power plant of claim 1, in which: the hydraulic adjusting door comprises a closed valve body, an inverted U-shaped valve sleeve seal is arranged in the valve body in a buckled mode, a valve core is arranged below the valve sleeve seal, the valve core is connected with the valve sleeve through a spring, a groove is formed in the valve body corresponding to the lower portion of the valve core, a valve rod sequentially penetrates through the valve body and the valve sleeve seal to be connected with the valve sleeve, the upper end of the valve rod is connected with a hydraulic device, a water inlet is formed in one side of the valve body, a water outlet is formed in the bottom of the valve body, and the water outlet is communicated with the groove.
3. The TCA feedwater control system of a fuel cell plant of claim 2, in which: the valve core is made of elastic materials and is in a trapezoid shape with a wide upper part and a narrow lower part, the width of the lower side of the trapezoid is smaller than that of the groove, and the width of the upper side of the trapezoid is larger than that of the groove.
4. A TCA feedwater control system for a gas turbine power plant according to any of the claims 1-3, characterized in that: the first electromagnetic valve and the second electromagnetic valve are connected with a control system.
5. A TCA feedwater control system for a gas turbine power plant according to any of the claims 1-3, characterized in that: and a pressure sensor is arranged on the second branch and is connected with a control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320735619.1U CN220152489U (en) | 2023-04-06 | 2023-04-06 | TCA water supply control system for fuel cell power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320735619.1U CN220152489U (en) | 2023-04-06 | 2023-04-06 | TCA water supply control system for fuel cell power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220152489U true CN220152489U (en) | 2023-12-08 |
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ID=89009597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320735619.1U Active CN220152489U (en) | 2023-04-06 | 2023-04-06 | TCA water supply control system for fuel cell power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220152489U (en) |
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2023
- 2023-04-06 CN CN202320735619.1U patent/CN220152489U/en active Active
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