CN205719320U - Gas turbine exhaust gas temperature measurement apparatus - Google Patents
Gas turbine exhaust gas temperature measurement apparatus Download PDFInfo
- Publication number
- CN205719320U CN205719320U CN201620312295.0U CN201620312295U CN205719320U CN 205719320 U CN205719320 U CN 205719320U CN 201620312295 U CN201620312295 U CN 201620312295U CN 205719320 U CN205719320 U CN 205719320U
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- temperature
- thermal resistance
- conduit
- temperature conduit
- pod apertures
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Abstract
The utility model discloses a kind of gas turbine exhaust gas temperature measurement apparatus, this device includes temperature conduit, some pod apertures are offered along its length on the tube wall of temperature conduit, the outer end of temperature conduit is fixed in the thief hole on turbine low pressure cylinder exhaust outlet wall body, the inner is positioned in exhaust outlet, thermal resistance inserts in temperature conduit and positions, the air-flow that the pod apertures offered on temperature duct wall flows in making exhaust outlet contacts with thermal resistance in entering temperature conduit, makes thermal resistance accurately reflect the delivery temperature under steam turbine different load.Thermal resistance uses armoured thermal resistance, because its solid body being combined by temperature-sensing element, lead-in wire, insulating materials and stainless steel sleeve pipe, has accurate, sensitive, thermal response time block, steady quality, the advantage of physical life length.Other armoured thermal resistance also has that diameter is little, the unrestricted advantage of length.
Description
Technical field
The utility model relates to a kind of steam turbine, is specifically related to a kind of gas turbine exhaust gas temperature measurement apparatus.
Background technology
The measurement of current gas turbine exhaust gas temperature typically uses plug-in type thermal resistance, by leaning on condensing at turbine low pressure cylinder exhaust outlet
The sidewall of device throat position offers installing hole, inserts plug-in type thermal resistance in exhaust outlet, due to plug-in type thermoelectricity from installing hole
The length limitation of resistance feeler lever head, insertion depth typically only about 0.4 meter.This metering system is surveyed when steam turbine high loaded process
The data obtaining are accurately, but when the load of steam turbine is less than 60%MCR, because the capacity of steam turbine reduces about 65%,
Low pressure (LP) cylinder exhaust outlet flows hardly by condenser throat regional gas stream, and the delivery temperature recording by this way does not have representative
Property, it is unfavorable for the efficiency analysis of steam turbine.
Utility model content
The utility model is solved the technical problem that to be, for the deficiencies in the prior art, provides a kind of gas turbine exhaust gas temperature measurement
Device, can accurately measure the delivery temperature under steam turbine different load, is conducive to carrying out efficiency analysis to steam turbine.
Technical scheme provided by the utility model is:
A kind of gas turbine exhaust gas temperature measurement apparatus, including temperature conduit 2 and thermal resistance 1；The outer end of temperature conduit 2 is fixed on
In thief hole on turbine low pressure cylinder exhaust outlet 4 wall body, the inner of temperature conduit 2 is positioned in exhaust outlet 4；Described temperature is led
Some pod apertures 21 are offered along its length on the tube wall of pipe 2；Described thermal resistance 1 inserts in temperature conduit 2 and positions temperature
The air-flow that the pod apertures offered on duct wall flows in making exhaust outlet contacts with thermal resistance in entering temperature conduit, makes thermal resistance accurate
The really delivery temperature under reflection steam turbine different load.
Described temperature conduit 2 is in tilted layout to airflow direction to meet, and on the one hand makes air-flow preferably contact with thermal resistance, the opposing party
Face makes pod apertures have drain function, to prevent heat resistive sheet face from condensing.
Described pod apertures 21 is evenly arranged on temperature conduit 2, offers in pairs, and paired pod apertures 21 extends through described temperature
The corresponding position of the relative two side of degree conduit.
Described pod apertures 21 is by the inner arrangement of temperature conduit 2.
Described thermal resistance 1 uses armoured thermal resistance, and its length is mated with the length of described temperature conduit 2.
Beneficial effect:
The utility model, by installing temperature conduit on the sidewall of turbine low pressure cylinder exhaust outlet, makes the inner of temperature conduit exceed
The cylinder wall surface of pneumatic cylinder, inserts thermal resistance in temperature conduit and positions, the tube wall of temperature conduit offering pod apertures, makes steamer
The temperature reflecting air-flow is contacted with thermal resistance, so at steam turbine in the air-flow importing temperature conduit of machine low pressure (LP) cylinder exhaust outlet flowing
Under different load conditions, thermal resistance all can reflect the real time temperature of air-flow really, provides accurately to the efficiency analyzing steam turbine
Foundation.
Temperature conduit is tilted to install in face of air-flow, air-flow can be made preferably to enter in temperature conduit.
The inclination of temperature conduit is installed can also make pod apertures have drain function, with prevent thermal resistance outer wall from condensing and can not be accurately anti-
Reflect the true temperature of air-flow.Because steam turbine delivery temperature when underload works is relatively low, it is possible to there will be air-flow in heat
The possibility of resistance outer wall condensation.
The inner making temperature conduit exceeds the cylinder wall surface of turbine low pressure cylinder, and pod apertures is opened in the inner end of temperature conduit simultaneously,
The temperature data recording can be made more accurate.
Armoured thermal resistance is the solid body being combined by temperature-sensing element, lead-in wire, insulating materials and stainless steel sleeve pipe, with existing skill
The plug-in type thermal resistance of art is compared, and volume is little, and internal without air, in thermal inertia, measurement delay is little, good mechanical property, resistance to shakes,
Shock resistance, has accurate, sensitive, thermal response time block, steady quality, the advantage of physical life length.
Armoured thermal resistance also has that diameter is little, the unrestricted advantage of length, can be according to the temperature of the power configuration different length of steamer
Degree conduit and the armoured thermal resistance of coupling thereof.
Brief description
Fig. 1 is the structural representation of one embodiment of the utility model；
Wherein, 1 is thermal resistance, and 2 is temperature conduit, and 3 is low pressure (LP) cylinder, and 4 is exhaust outlet, and 21 is pod apertures.
Detailed description of the invention
As it is shown in figure 1, present embodiment discloses a kind of gas turbine exhaust gas temperature measurement apparatus, including armoured thermal resistance 1 and temperature
Conduit 2.
Being evenly equipped with some pod apertures 21 on the tube wall of temperature conduit 2 along its length, steam turbine is fixed in the outer end of temperature conduit 2
In thief hole on low pressure (LP) cylinder 3 exhaust outlet 4 wall body, the inner exceed cylinder wall surface one segment length of low pressure (LP) cylinder 3, thermal resistance 1 inserts
In temperature conduit 2 and position, the pod apertures 21 that temperature conduit 2 tube wall is offered makes air-flow even in it and armoured thermal resistance
1 contact, makes armoured thermal resistance 1 can accurately sense the delivery temperature under steam turbine different load.The length of armoured thermal resistance 1 with
The length coupling of temperature conduit 2.Thermal resistance uses armoured thermal resistance.
In order to make air-flow can preferably enter in temperature conduit 2, temperature conduit 2 is tilted to install in face of air-flow.
In order to make the temperature data recording more accurate, the inner of temperature conduit 2 is made to exceed the cylinder wall surface one section of turbine low pressure cylinder 3
Length, makes pod apertures 21 be opened in the nearly turbine low pressure cylinder exhaust outlet median plane end of temperature conduit 2, and pod apertures 21 is arranged in
The inner end of temperature conduit 2, is evenly arranged, offers in pairs, runs through the corresponding position of temperature conduit 21 sidewall simultaneously.
The inclination of temperature conduit 2 is installed also makes pod apertures 21 have drain function, with prevent the outer wall of thermal resistance 1 from condensing and can not
Accurately reflect the true temperature of air-flow.Because steam turbine delivery temperature when underload works is relatively low, it is possible to there will be gas
Stream is in the possibility of thermal resistance outer wall condensation.
Armoured thermal resistance, by installing temperature conduit on the sidewall of turbine low pressure cylinder exhaust outlet, is inserted temperature by the utility model
Conduit is interior and positions, and the tube wall of temperature conduit offers pod apertures, and the air-flow flowing in making turbine low pressure cylinder exhaust outlet imports temperature
Contact the temperature reflecting air-flow, so under the different load condition of steam turbine, armouring thermoelectricity with armoured thermal resistance in degree conduit
Resistance all can reflect the real time temperature of air-flow really, provides foundation accurately to the efficiency analyzing steam turbine.
Armoured thermal resistance is the solid body being combined by temperature-sensing element, lead-in wire, insulating materials and stainless steel sleeve pipe, with existing skill
The plug-in type thermal resistance of art is compared, and volume is little, and internal without air, in thermal inertia, measurement delay is little, good mechanical property, resistance to shakes,
Shock resistance, has accurate, sensitive, thermal response time block, steady quality, the advantage of physical life length.
Armoured thermal resistance also has that diameter is little, the unrestricted advantage of length.
Claims (5)
1. a gas turbine exhaust gas temperature measurement apparatus, it is characterised in that: include temperature conduit (2) and thermal resistance (1)；The outer end of temperature conduit (2) is fixed in the thief hole on turbine low pressure cylinder exhaust outlet (4) wall body, the inner of temperature conduit (2) is positioned in exhaust outlet (4)；Some pod apertures (21) are offered along its length on the tube wall of described temperature conduit (2)；Described thermal resistance (1) inserts in temperature conduit (2) and positions.
2. gas turbine exhaust gas temperature measurement apparatus as claimed in claim 1, it is characterised in that: described temperature conduit (2) is in tilted layout to airflow direction to meet.
3. gas turbine exhaust gas temperature measurement apparatus as claimed in claim 2, it is characterized in that: described pod apertures (21) is evenly arranged on temperature conduit (2), offers in pairs, paired pod apertures (21) is separately positioned on the corresponding position of the relative two side of described temperature conduit.
4. gas turbine exhaust gas temperature measurement apparatus as claimed in claim 3, it is characterised in that: described pod apertures (21) is by the inner arrangement of temperature conduit (2).
5. the gas turbine exhaust gas temperature measurement apparatus as according to any one of Claims 1 to 4, it is characterised in that: described thermal resistance (1) uses armoured thermal resistance, and its length is mated with the length of described temperature conduit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620312295.0U CN205719320U (en) | 2016-04-14 | 2016-04-14 | Gas turbine exhaust gas temperature measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620312295.0U CN205719320U (en) | 2016-04-14 | 2016-04-14 | Gas turbine exhaust gas temperature measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205719320U true CN205719320U (en) | 2016-11-23 |
Family
ID=57308599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620312295.0U Active CN205719320U (en) | 2016-04-14 | 2016-04-14 | Gas turbine exhaust gas temperature measurement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205719320U (en) |
-
2016
- 2016-04-14 CN CN201620312295.0U patent/CN205719320U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |