CN113432736A - Casing pipe capable of replacing temperature measuring points of penultimate and last-stage blades on line - Google Patents
Casing pipe capable of replacing temperature measuring points of penultimate and last-stage blades on line Download PDFInfo
- Publication number
- CN113432736A CN113432736A CN202110694512.2A CN202110694512A CN113432736A CN 113432736 A CN113432736 A CN 113432736A CN 202110694512 A CN202110694512 A CN 202110694512A CN 113432736 A CN113432736 A CN 113432736A
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- China
- Prior art keywords
- sleeve
- penultimate
- bushing
- stainless steel
- cylinder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000149 penetrating effect Effects 0.000 claims abstract description 33
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 29
- 239000010935 stainless steel Substances 0.000 claims abstract description 29
- 238000009529 body temperature measurement Methods 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a sleeve capable of replacing a temperature measuring point of a penultimate blade and a last blade on line, wherein a first outer cylinder penetrating sleeve, a first stainless steel pipe, an inner cylinder penetrating sleeve, a penultimate temperature sleeve and a support are sequentially connected, the first outer cylinder penetrating sleeve penetrates through the side wall of a low-pressure cylinder outer cylinder, the inner cylinder penetrating sleeve penetrates through the side wall of a low-pressure cylinder inner cylinder, and the support is fixed on the inner wall of the low-pressure cylinder inner cylinder; the second is worn outer jar sleeve pipe, second stainless steel pipe, elbow and last stage temperature sleeve pipe and is connected gradually, and wherein, the second is worn outer jar sleeve pipe and is worn low pressure jar outer jar, and the last stage temperature sleeve pipe passes outside water conservancy diversion ring, and this sleeve pipe can change the thermocouple on line.
Description
Technical Field
The invention belongs to the technical field of operation monitoring of a steam turbine, and relates to a sleeve capable of replacing temperature measuring points of a penultimate blade and a last-stage blade on line.
Background
In recent years, the low-pressure cylinder zero-output technology can realize the flexible switching of a heat supply unit between steam extraction and condensation modes and low-pressure cylinder zero-output operation modes by greatly improving the heat supply capacity and the electric peak adjusting capacity of the unit, in the low-pressure cylinder zero-output operation process, steam entering the low-pressure cylinder from a medium-pressure communicating pipe and a low-pressure communicating pipe is completely blocked, only a small amount of steam enters the low-pressure cylinder through a cooling steam pipeline in a steam cooling mode, and the temperature of the next last stage and the temperature of the last stage are maintained in a safe range together with the low-pressure cylinder desuperheating water.
In the actual operation process, the temperatures of the last and last blades of the low-pressure cylinder need to be monitored in real time, and a temperature sleeve and a thermocouple are installed.
Therefore, a new bushing capable of replacing the temperature measuring points of the penultimate and last-stage blades on line is needed, so that the thermocouple has the condition of online replacement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a sleeve capable of replacing temperature measuring points of a penultimate blade and a last blade on line, and the sleeve can replace a thermocouple on line.
In order to achieve the aim, the sleeve capable of replacing the temperature measuring points of the blades at the penultimate stage and the final stage on line comprises a first sleeve body and a second sleeve body; the first sleeve body comprises a first outer cylinder penetrating sleeve, a first stainless steel pipe, an inner cylinder penetrating sleeve, a penultimate temperature sleeve and a support; the second sleeve body comprises a second outer cylinder penetrating sleeve, a second stainless steel pipe, a final-stage temperature sleeve and an elbow;
the first outer cylinder penetrating sleeve, the first stainless steel pipe, the inner cylinder penetrating sleeve, the penultimate temperature sleeve and the support are sequentially connected, wherein the first outer cylinder penetrating sleeve penetrates through the side wall of the outer cylinder of the low-pressure cylinder, the inner cylinder penetrating sleeve penetrates through the side wall of the inner cylinder of the low-pressure cylinder, and the support is fixed on the inner wall of the inner cylinder of the low-pressure cylinder;
the second outer cylinder penetrating sleeve, the second stainless steel pipe, the elbow and the final-stage temperature sleeve are sequentially connected, wherein the second outer cylinder penetrating sleeve penetrates through the low-pressure cylinder outer cylinder, and the final-stage temperature sleeve penetrates through the external flow guide ring.
A first compensation element is arranged between the first outer cylinder penetrating sleeve and the first stainless steel pipe.
And a second compensation element is arranged between the first stainless steel pipe and the inner cylinder sleeve.
And a third compensation element is arranged between the inner cylinder sleeve and the penultimate temperature sleeve.
And a second compensation element is arranged between the first stainless steel pipe and the inner cylinder sleeve.
And a third compensation element is arranged between the inner cylinder sleeve and the penultimate temperature sleeve.
The first compensation element and the second compensation element comprise corrugated compensators, first reducing pipes and second reducing pipes, and the corrugated compensators are fixed between the first reducing pipes and the second reducing pipes.
The first reducing pipe and the second reducing pipe are both in a conical structure.
The first stainless steel pipe and the second stainless steel pipe are welded with supports.
The invention has the following beneficial effects:
when the sleeve capable of replacing the temperature measuring point of the penultimate and final blades on line is in specific operation, the first outer cylinder penetrating sleeve, the first stainless steel pipe, the inner cylinder penetrating sleeve, the penultimate temperature sleeve and the support are sequentially connected, wherein the first outer cylinder penetrating sleeve penetrates through the side wall of the outer cylinder of the low-pressure cylinder, the inner cylinder penetrating sleeve penetrates through the side wall of the inner cylinder of the low-pressure cylinder, and the support is fixed on the inner wall of the inner cylinder of the low-pressure cylinder, meanwhile, all the parts in the first sleeve pipe body are connected in sequence, and all the parts in the second sleeve pipe body are connected in sequence, so that the problem that the thermocouple cannot be replaced on line in the prior art is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein 101 is a first outer cylinder casing, 102 is a second outer cylinder casing, 201 is a first compensation element, 202 is a second compensation element, 203 is a third compensation element, 204 is a fourth compensation element, 205 is a fifth compensation element, 3 is a support, 401 is a first stainless steel pipe, 402 is a second stainless steel pipe, 5 is an inner cylinder casing, 6 is a penultimate temperature casing, 7 is an ultimate temperature casing, 8 is a bracket, 9 is a corrugated compensator, 1001 is a first reducer, 1002 is a second reducer, 11 is a low-pressure outer cylinder, 12 is a low-pressure inner cylinder, 13 is an elbow, and 14 is a deflector ring.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the sleeve capable of replacing the temperature measuring points of the penultimate and last-stage blades on line comprises a first sleeve body and a second sleeve body;
the first bushing body comprises a first outer cylinder bushing 101, a first compensation element 201, a second compensation element 202, a third compensation element 203, a first stainless steel pipe 401, an inner cylinder bushing 5, a penultimate temperature bushing 6 and a bracket 8;
the final-stage temperature bushing 7 includes a second through outer cylinder bushing 102, a fourth compensation element 204, a fifth compensation element 205, a second stainless steel pipe 402, a final-stage temperature bushing 7, and an elbow 13, wherein each of the first compensation element 201 and the second compensation element 202 includes a corrugated compensator 9, a first reducing pipe 1001 and a second reducing pipe 1002, and the corrugated compensator 9 is fixed between the first reducing pipe 1001 and the second reducing pipe 1002.
The first outer cylinder penetrating sleeve 101, the first compensating element 201, the first stainless steel pipe 401, the second compensating element 202, the inner cylinder penetrating sleeve 5, the third compensating element 203, the penultimate temperature sleeve 6 and the support 8 are sequentially connected, wherein the penultimate temperature sleeve 6 penetrates through the support 8, the first outer cylinder penetrating sleeve 101 penetrates through the side wall of the outer low-pressure cylinder 11, the inner cylinder penetrating sleeve 5 penetrates through the side wall of the inner low-pressure cylinder 12, and the support 8 is fixed on the inner wall of the inner low-pressure cylinder 12;
the second outer cylinder penetrating sleeve 102, the fourth compensation element 204, the second stainless steel pipe 402, the fifth compensation element 205, the elbow 13 and the final-stage temperature sleeve 7 are sequentially connected, wherein the second outer cylinder penetrating sleeve 102 penetrates through the low-pressure outer cylinder 11, and the final-stage temperature sleeve 7 penetrates through the deflector ring 14.
The first reducing pipe 1001 and the second reducing pipe 1002 are both conical structures.
the deformation of the sleeve due to temperature change is absorbed by the corrugated compensator 9, preventing the sleeve from being damaged due to temperature change.
When the low-pressure cylinder outer cylinder is used, after the first sleeve body is installed, a first temperature measuring element (thermocouple) sequentially penetrates through the low-pressure cylinder inner cylinder 12 and the low-pressure cylinder outer cylinder 11 in the first sleeve body; after the second sleeve body is installed, a second temperature measuring element (thermocouple) sequentially penetrates through the low-pressure cylinder inner cylinder 12 and the flow guide ring 14 in the second sleeve body, the temperature measuring elements are all positioned in the sleeve in the whole process, all interfaces of the sleeve are connected in a welding mode, steam leakage is avoided, and due to the fact that the inner wall of the sleeve is smooth and smooth, when the temperature measuring elements break down, the temperature measuring elements can be drawn out at any time and replaced by new temperature measuring elements, and online replacement of the next-to-last-stage blade temperature measuring elements and the last-stage blade temperature measuring elements is achieved.
The specification and material of each part of the temperature sleeve are shown in table 1.
TABLE 1
Claims (9)
1. A sleeve capable of replacing penultimate and last-stage blade temperature measuring points on line is characterized by comprising a first sleeve body and a second sleeve body; the first sleeve body comprises a first outer cylinder penetrating sleeve (101), a first stainless steel pipe (401), an inner cylinder penetrating sleeve (5), a penultimate temperature sleeve (6) and a support (8); the second sleeve body comprises a second outer cylinder penetrating sleeve (102), a second stainless steel pipe (402), a final-stage temperature sleeve (7) and an elbow (13);
the first outer cylinder penetrating sleeve (101), the first stainless steel pipe (401), the inner cylinder penetrating sleeve (5), the penultimate temperature sleeve (6) and the support (8) are sequentially connected, wherein the first outer cylinder penetrating sleeve (101) penetrates through the side wall of the low-pressure cylinder outer cylinder (11), the inner cylinder penetrating sleeve (5) penetrates through the side wall of the low-pressure cylinder inner cylinder (12), and the support (8) is fixed on the inner wall of the low-pressure cylinder inner cylinder (12);
the second outer cylinder penetrating sleeve (102), the second stainless steel pipe (402), the elbow (13) and the final-stage temperature sleeve (7) are sequentially connected, wherein the second outer cylinder penetrating sleeve (102) penetrates through the low-pressure cylinder outer cylinder (11), and the final-stage temperature sleeve (7) penetrates through the external guide ring (14).
2. The bushing of claim 1, wherein a first compensating element (201) is disposed between the first through-outer casing (101) and the first stainless steel tube (401).
3. The bushing for on-line replacement of the penultimate and last stage blade temperature measurement points according to claim 2, characterized in that a second compensation element (202) is arranged between the first stainless steel tube (401) and the through-inner cylinder bushing (5).
4. A bushing for on-line replacement of the penultimate and last stage blade temperature measurement points according to claim 3, characterized in that a third compensation element (203) is arranged between the inner cylinder bushing (5) and the penultimate temperature bushing (6).
5. The bushing of claim 4, wherein a second compensating element (202) is provided between the first stainless steel tube (401) and the inner cylinder bushing (5).
6. The bushing of claim 5, wherein a third compensating element (203) is arranged between the inner cylinder bushing (5) and the penultimate temperature bushing (6).
7. The casing capable of replacing a penultimate and last-stage blade temperature measuring point online according to claim 6, wherein the first compensating element (201) and the second compensating element (202) each comprise a corrugated compensator (9), a first reducing pipe (1001) and a second reducing pipe (1002), and the corrugated compensator (9) is fixed between the first reducing pipe (1001) and the second reducing pipe (1002).
8. The bushing of claim 7, wherein the first reducing pipe (1001) and the second reducing pipe (1002) are conical structures.
9. The casing for on-line replacement of the penultimate and last stage blade temperature measurement points according to claim 1, wherein the support (3) is welded to both the first stainless steel tube (401) and the second stainless steel tube (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110694512.2A CN113432736A (en) | 2021-06-22 | 2021-06-22 | Casing pipe capable of replacing temperature measuring points of penultimate and last-stage blades on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110694512.2A CN113432736A (en) | 2021-06-22 | 2021-06-22 | Casing pipe capable of replacing temperature measuring points of penultimate and last-stage blades on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113432736A true CN113432736A (en) | 2021-09-24 |
Family
ID=77757179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110694512.2A Pending CN113432736A (en) | 2021-06-22 | 2021-06-22 | Casing pipe capable of replacing temperature measuring points of penultimate and last-stage blades on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113432736A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5242226A (en) * | 1991-07-27 | 1993-09-07 | Hoechst Aktiengesellschaft | Temperature-measuring instrument |
| US6390673B1 (en) * | 2000-04-10 | 2002-05-21 | Watson Cogeneration Company | Method and apparatus for extending the life of a hot gas duct thermowell tube |
| CN101017112A (en) * | 2006-12-12 | 2007-08-15 | 郑溪民 | Thermocoupleassembly capable of being changed online |
| RU2008115661A (en) * | 2008-04-21 | 2009-10-27 | Открытое Акционерное Общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. | TWO FLOW CYLINDER OF A STEAM TURBINE INSTALLATION |
| CN104198070A (en) * | 2014-08-26 | 2014-12-10 | 安徽蓝德仪表有限公司 | Detachable thermocouple |
| US20160356174A1 (en) * | 2015-06-08 | 2016-12-08 | Siemens Energy, Inc. | Gas turbine exhaust diffuser mounted blade path thermocouple probe |
| CN106813793A (en) * | 2016-12-13 | 2017-06-09 | 安徽国晖电气科技有限公司 | A kind of Multi-section temperature-measuring adjustable length thermocouple |
| CN206772455U (en) * | 2017-05-24 | 2017-12-19 | 久茂自动化(大连)有限公司 | A kind of multipoint mode measures thermocouple |
| CN207259530U (en) * | 2017-07-14 | 2018-04-20 | 张露 | It is conveniently replaceable the blast furnace cross temperature measuring equipment of temperature-measuring part |
| CN208331257U (en) * | 2018-05-31 | 2019-01-04 | 洛阳八佳电气科技股份有限公司 | A kind of thermometric sealing structure of vacuum melting furnace |
| US20190101453A1 (en) * | 2017-09-29 | 2019-04-04 | Foreman Instrumentation & Controls, Inc. | Thermowell With Expansion Joint |
| CN109681277A (en) * | 2019-01-21 | 2019-04-26 | 西安热工研究院有限公司 | A kind of low pressure (LP) cylinder exhaust stage blade blast temperature control system and control method |
| CN209416538U (en) * | 2018-12-27 | 2019-09-20 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of hydrojet screw compressor and its delivery temperature measurement structure |
| CN211116148U (en) * | 2019-12-24 | 2020-07-28 | 梁双荣 | Steam turbine low pressure cylinder stage rear exhaust temperature measuring device |
| CN211696718U (en) * | 2020-04-16 | 2020-10-16 | 华能北京热电有限责任公司 | Monitoring device and temperature measuring system for monitoring temperature of last-stage blade of low-pressure cylinder |
-
2021
- 2021-06-22 CN CN202110694512.2A patent/CN113432736A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5242226A (en) * | 1991-07-27 | 1993-09-07 | Hoechst Aktiengesellschaft | Temperature-measuring instrument |
| US6390673B1 (en) * | 2000-04-10 | 2002-05-21 | Watson Cogeneration Company | Method and apparatus for extending the life of a hot gas duct thermowell tube |
| CN101017112A (en) * | 2006-12-12 | 2007-08-15 | 郑溪民 | Thermocoupleassembly capable of being changed online |
| RU2008115661A (en) * | 2008-04-21 | 2009-10-27 | Открытое Акционерное Общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. | TWO FLOW CYLINDER OF A STEAM TURBINE INSTALLATION |
| CN104198070A (en) * | 2014-08-26 | 2014-12-10 | 安徽蓝德仪表有限公司 | Detachable thermocouple |
| US20160356174A1 (en) * | 2015-06-08 | 2016-12-08 | Siemens Energy, Inc. | Gas turbine exhaust diffuser mounted blade path thermocouple probe |
| CN106813793A (en) * | 2016-12-13 | 2017-06-09 | 安徽国晖电气科技有限公司 | A kind of Multi-section temperature-measuring adjustable length thermocouple |
| CN206772455U (en) * | 2017-05-24 | 2017-12-19 | 久茂自动化(大连)有限公司 | A kind of multipoint mode measures thermocouple |
| CN207259530U (en) * | 2017-07-14 | 2018-04-20 | 张露 | It is conveniently replaceable the blast furnace cross temperature measuring equipment of temperature-measuring part |
| US20190101453A1 (en) * | 2017-09-29 | 2019-04-04 | Foreman Instrumentation & Controls, Inc. | Thermowell With Expansion Joint |
| CN208331257U (en) * | 2018-05-31 | 2019-01-04 | 洛阳八佳电气科技股份有限公司 | A kind of thermometric sealing structure of vacuum melting furnace |
| CN209416538U (en) * | 2018-12-27 | 2019-09-20 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of hydrojet screw compressor and its delivery temperature measurement structure |
| CN109681277A (en) * | 2019-01-21 | 2019-04-26 | 西安热工研究院有限公司 | A kind of low pressure (LP) cylinder exhaust stage blade blast temperature control system and control method |
| CN211116148U (en) * | 2019-12-24 | 2020-07-28 | 梁双荣 | Steam turbine low pressure cylinder stage rear exhaust temperature measuring device |
| CN211696718U (en) * | 2020-04-16 | 2020-10-16 | 华能北京热电有限责任公司 | Monitoring device and temperature measuring system for monitoring temperature of last-stage blade of low-pressure cylinder |
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