CN207485483U - A kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing - Google Patents
A kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing Download PDFInfo
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- CN207485483U CN207485483U CN201721676898.XU CN201721676898U CN207485483U CN 207485483 U CN207485483 U CN 207485483U CN 201721676898 U CN201721676898 U CN 201721676898U CN 207485483 U CN207485483 U CN 207485483U
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- outer casing
- medium pressure
- main line
- valve
- pressure outer
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Abstract
A kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing, belongs to High-and-medium Pressure Outer Casing cooling field.Solves the problems, such as block distortion caused by preventing the temperature difference.In the utility model, conditioner is fed through through the compressed air of compressor, is sent into cooling chamber after conditioner is adjusted, which cools down the upper cylinder half of High-and-medium Pressure Outer Casing；The conditioner includes filter, solenoid valve, thermometric instrument, pressure transmitter and two hand stop valves；On the inlet end of main line to outlet extreme direction, it is laid with filter, solenoid valve, first hand stop valve, thermometric instrument, pressure transmitter and second hand stop valve successively.The utility model is mainly used for cooling down the first half of High-and-medium Pressure Outer Casing.
Description
Technical field
The utility model belongs to High-and-medium Pressure Outer Casing cooling field.
Background technology
The upper and lower larger temperature difference of cylinder generally existing of steam turbine, caused block distortion can make under steam turbine after compressor emergency shutdown
Half it is dynamic and static between gap become smaller.Under these conditions, when steam turbine is again started up, it is possible to make packing pad wear, this can draw
Play the service life of steam turbine.
Utility model content
The utility model is block distortion caused by order to solve the problems, such as to prevent the temperature difference, and the utility model provides one kind
The upper half cooling device of steam turbine High-and-medium Pressure Outer Casing.
A kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing, it includes conditioner and cooling chamber；Cooling
Room is wrapped in outside the upper cylinder half of High-and-medium Pressure Outer Casing；
Conditioner is fed through through the compressed air of compressor, is sent into after conditioner is adjusted cold
But room, the cooling chamber cool down the upper cylinder half of High-and-medium Pressure Outer Casing；
The conditioner includes filter, solenoid valve, thermometric instrument, pressure transmitter and two manual shutoffs
Valve；
On the inlet end of main line to outlet extreme direction, it is laid with filter, solenoid valve, first manual shutoff successively
Valve, thermometric instrument, pressure transmitter and second hand stop valve；
Filter, for filtering out the impurity in air；
Solenoid valve, for the gas flow in main line to be adjusted；
Thermometric instrument, for showing the gas temperature in main line；
Pressure transmitter, for monitoring the gas pressure in main line；
Two hand stop valves are used to that the gas flow in main line is adjusted.
Preferably, backup bypass and spare shut-off valve are further included；
The both ends of backup bypass are connected with main line, and one end of backup bypass is arranged on thermometric instrument and pressure transmitter
Between, the other end of backup bypass is arranged between filter and first hand stop valve；
Spare shut-off valve is arranged on backup bypass.
Preferably, a maintenance shut-off valve is further included；
When being overhauled to solenoid valve, maintenance shut-off valve branches to main line inlet end for ending from backup bypass
Air on direction.
Preferably, it further includes and is arranged on second restricting orifice between hand stop valve and pressure transmitter,
The restricting orifice, for adjusting the flow bore of main line output gas.
Preferably, a branch is further included, one end of the branch is arranged on second hand stop valve and restricting orifice
Between, and connected with main line；
The other end of branch is equipped with third hand stop valve, and the other end of branch is as gas output end.
Preferably, the quantity of the cooling chamber is 2, and two cooling chambers are arranged in the upper cylinder half of High-and-medium Pressure Outer Casing
Front and rear sides；
Main line and branch are respectively that two cooling chambers are supplied.
The advantageous effect that the utility model is brought is, is designed in High-and-medium Pressure Outer Casing upper half and installs cooling chamber and mating cooling
Device.The cooling chamber and mating cooling device can reduce the metal temperature of steam turbine upper cylinder half after halt turbines.It is and then anti-
Only occur the big temperature difference between upper cylinder half and lower cylinder, reduce the deformation of High-and-medium Pressure Outer Casing body.
Description of the drawings
Fig. 1 is a kind of principle schematic of the upper half cooling device of steam turbine High-and-medium Pressure Outer Casing；
Fig. 2 is the structure diagram of conditioner.
Specific embodiment
Specific embodiment one：Illustrate present embodiment, a kind of steam turbine senior middle school described in present embodiment referring to Fig. 1
The upper half cooling device of outer shell is pressed, it includes conditioner 1 and cooling chamber 2；Cooling chamber 2 is wrapped in the upper of High-and-medium Pressure Outer Casing
Outside cylinder；
Conditioner 1 is fed through through the compressed air of compressor, is sent into after conditioner 1 is adjusted
Cooling chamber 2, the cooling chamber 2 cool down the upper cylinder half of High-and-medium Pressure Outer Casing；
The conditioner 1 include filter 1-1, solenoid valve 1-2, thermometric instrument 1-3, pressure transmitter 1-4 and
Two hand stop valve 1-6；
On the inlet end of main line 1-5 to outlet extreme direction, be laid with successively filter 1-1, solenoid valve 1-2, first
Hand stop valve 1-6, thermometric instrument 1-3, pressure transmitter 1-4 and second hand stop valve 1-6；
Filter 1-1, for filtering out the impurity in air；
Solenoid valve 1-2, for the gas flow in main line 1-5 to be adjusted；
Thermometric instrument 1-3, for showing the gas temperature in main line 1-5；
Pressure transmitter 1-4, for monitoring the gas pressure in main line 1-5；
Two hand stop valve 1-6 are used to that the gas flow in main line 1-5 is adjusted.
In present embodiment, increase cooling chamber 2 in High-and-medium Pressure Outer Casing upper half, cooling chamber 2 can be with High-and-medium Pressure Outer Casing using weldering
Binding structure ensures sealing.Cooling chamber 2 can be used steel plate and be welded.
In specific application process, the compressed air of power plant can be led to cooling chamber 2, so as to the upper of High-and-medium Pressure Outer Casing
Half portion is cooled down and then prevents upper cylinder half there is the big temperature difference between lower cylinder, reduces the deformation of High-and-medium Pressure Outer Casing body.
Specific embodiment two：Illustrate present embodiment, present embodiment and specific embodiment one referring to Fig. 1 and Fig. 2
Difference lies in further include backup bypass 1-8 and spare to a kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing
Shut-off valve 1-9；
The both ends of backup bypass 1-8 are connected with main line 1-5, and one end of backup bypass 1-8 is arranged on thermometric instrument 1-3
Between pressure transmitter 1-4, the other end of backup bypass 1-8 be arranged on filter 1-1 and first hand stop valve 1-6 it
Between；
Spare shut-off valve 1-9 is arranged on backup bypass 1-8.
In present embodiment, backup bypass 1-8, when main line 1-5 breaks down, closes first as spare selection
Hand stop valve 1-6 opens spare shut-off valve 1-9, and compressed air is made to pass through backup bypass 1-8 and is sent to cooling chamber 2, so as to ensure
In main line 1-5 failures, the first half of High-and-medium Pressure Outer Casing can be cooled down in time, make one kind described in the utility model
The upper half cooling device of steam turbine High-and-medium Pressure Outer Casing can more safely and effectively be run.
Specific embodiment three：Illustrate present embodiment, present embodiment and specific embodiment two referring to Fig. 1 and Fig. 2
Difference lies in further include a maintenance shut-off valve 1- to a kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing
10；
When being overhauled to solenoid valve 1-2, maintenance shut-off valve 1-10 branches to master for ending from backup bypass 1-8
Air on pipeline 1-5 air inlet extreme directions.
Present embodiment, when solenoid valve 1-2 breaks down, main line 1-5 stop gas transmission, while backup bypass 1-8 into
Row supplies cooling chamber 2, and closes first hand stop valve 1-6 and maintenance shut-off valve 1-10, and solenoid valve 1-2 is carried out
Maintenance in time.
Specific embodiment four：Illustrate present embodiment, present embodiment and specific embodiment two referring to Fig. 1 and Fig. 2
Difference lies in further include and be arranged on second manual section a kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing
The only restricting orifice 1-7 between valve 1-6 and pressure transmitter 1-4,
Restricting orifice 1-7, for adjusting the flow bore of main line 1-5 output gas.
The flow bore of main line 1-5 output gas is adjusted in present embodiment, restricting orifice 1-7, in time to conveying gas
The flow bore of body is adjusted.
Specific embodiment five：Illustrate present embodiment, present embodiment and specific embodiment four referring to Fig. 1 and Fig. 2
Difference lies in further include a branch 1-11, the branch to a kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing
One end of road 1-11 is arranged between second hand stop valve 1-6 and restricting orifice 1-7, and is connected with main line 1-5；
The other end of branch 1-11 is equipped with third hand stop valve 1-6, and the other end of branch 1-11 is as gas
Output terminal.
In present embodiment, branch 1-11 is increased, making the tool of conditioner 1, there are two gas output end mouths, can be right
One or two cooling chamber 2 is supplied.
Specific embodiment six：Illustrate present embodiment, present embodiment and specific embodiment five referring to Fig. 1 and Fig. 2
Difference lies in the quantity of the cooling chamber 2 is 2, two to a kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing
A cooling chamber 2 is arranged in the front and rear sides of the upper cylinder half of High-and-medium Pressure Outer Casing；
Main line 1-5 and branch 1-11 is respectively that two cooling chambers 2 are supplied.
A kind of structure of the upper half cooling device of steam turbine High-and-medium Pressure Outer Casing described in the utility model is not limited to above-mentioned
Concrete structure recorded in each embodiment can also be the reasonable combination of the technical characteristic recorded in the respective embodiments described above.
Claims (6)
1. a kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing, which is characterized in that it include conditioner (1) and
Cooling chamber (2)；Cooling chamber (2) is wrapped in outside the upper cylinder half of High-and-medium Pressure Outer Casing；
Conditioner (1) is fed through through the compressed air of compressor, is sent into after conditioner (1) is adjusted
Cooling chamber (2), the cooling chamber (2) cool down the upper cylinder half of High-and-medium Pressure Outer Casing；
The conditioner (1) includes filter (1-1), solenoid valve (1-2), thermometric instrument (1-3), pressure transmitter
(1-4) and two hand stop valves (1-6)；
On the inlet end to outlet extreme direction of main line (1-5), it is laid with filter (1-1), solenoid valve (1-2), first successively
A hand stop valve (1-6), thermometric instrument (1-3), pressure transmitter (1-4) and second hand stop valve (1-6)；
Filter (1-1), for filtering out the impurity in air；
Solenoid valve (1-2), for the gas flow in main line (1-5) to be adjusted；
Thermometric instrument (1-3), for showing the gas temperature in main line (1-5)；
Pressure transmitter (1-4), for monitoring the gas pressure in main line (1-5)；
Two hand stop valves (1-6) are used to that the gas flow in main line (1-5) is adjusted.
2. the upper half cooling device of a kind of steam turbine High-and-medium Pressure Outer Casing according to claim 1, which is characterized in that also wrap
Include backup bypass (1-8) and spare shut-off valve (1-9)；
The both ends of backup bypass (1-8) are connected with main line (1-5), and one end of backup bypass (1-8) is arranged on thermometric instrument
Between (1-3) and pressure transmitter (1-4), the other end of backup bypass (1-8) is arranged on filter (1-1) and first manual
Between shut-off valve (1-6)；
Spare shut-off valve (1-9) is arranged on backup bypass (1-8).
3. the upper half cooling device of a kind of steam turbine High-and-medium Pressure Outer Casing according to claim 2, which is characterized in that also wrap
Include a maintenance shut-off valve (1-10)；
When being overhauled to solenoid valve (1-2), maintenance shut-off valve (1-10) branches to for ending from backup bypass (1-8)
Air on main line (1-5) air inlet extreme direction.
4. the upper half cooling device of a kind of steam turbine High-and-medium Pressure Outer Casing according to claim 2, which is characterized in that also wrap
The restricting orifice (1-7) being arranged between second hand stop valve (1-6) and pressure transmitter (1-4) is included,
The restricting orifice (1-7), for adjusting the flow bore of main line (1-5) output gas.
5. the upper half cooling device of a kind of steam turbine High-and-medium Pressure Outer Casing according to claim 4, which is characterized in that also wrap
A branch (1-11) is included, one end of the branch (1-11) is arranged on second hand stop valve (1-6) and restricting orifice (1-7)
Between, and connected with main line (1-5)；
The other end of branch (1-11) is equipped with third hand stop valve (1-6), and the other end of branch (1-11) is as gas
Body output terminal.
6. the upper half cooling device of a kind of steam turbine High-and-medium Pressure Outer Casing according to claim 5, which is characterized in that described
The quantity of cooling chamber (2) is 2, and two cooling chambers (2) are arranged in the front and rear sides of the upper cylinder half of High-and-medium Pressure Outer Casing；
Main line (1-5) and branch (1-11) are respectively that two cooling chambers (2) are supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721676898.XU CN207485483U (en) | 2017-12-05 | 2017-12-05 | A kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721676898.XU CN207485483U (en) | 2017-12-05 | 2017-12-05 | A kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207485483U true CN207485483U (en) | 2018-06-12 |
Family
ID=62457860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721676898.XU Active CN207485483U (en) | 2017-12-05 | 2017-12-05 | A kind of upper half cooling device of steam turbine High-and-medium Pressure Outer Casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207485483U (en) |
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2017
- 2017-12-05 CN CN201721676898.XU patent/CN207485483U/en active Active
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