CN102004000B - Surface temperature detection system for rotation part in high-temperature high-pressure container - Google Patents
Surface temperature detection system for rotation part in high-temperature high-pressure container Download PDFInfo
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- CN102004000B CN102004000B CN2010105163134A CN201010516313A CN102004000B CN 102004000 B CN102004000 B CN 102004000B CN 2010105163134 A CN2010105163134 A CN 2010105163134A CN 201010516313 A CN201010516313 A CN 201010516313A CN 102004000 B CN102004000 B CN 102004000B
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Abstract
The invention discloses a surface temperature detection system for a rotation part in a high-temperature high-pressure container, relating to a temperature detection technology. The surface temperature detection system is structurally characterized in that an infrared window and sealing interface assembly (10) is connected onto a pressure container wall (80), and the infrared window and sealing interface assembly (10), an infrared high-temperature optical fiber (20), an infrared temperature measuring module (30), a signal cable (70) and a computer (40) are sequentially connected; and the infrared window and sealing interface assembly (10) is spatially opposite to a rotating body (50) through an infrared radiation optical path (60). The surface temperature detection system can be used for accurately measuring the surface temperature of an object within a wider intermediate-high temperature range of 250-750 DEG C, measuring the surface temperature of a rotating object in a high-temperature high-pressure container, eliminating the influence on infrared temperature measurement by emissivity variation caused by surface property variation of an object to be measured to a larger extent after the object to be measured runs for a long time.
Description
Technical field
The present invention relates to a kind of temperature detection technology, relate in particular to a kind of surface temperature detection system that is used for High Temperature High Pressure (as the supercritical water vapor medium) container inner rotatable part.It specifically is a kind of on-line detecting system that can be applicable to supercritical pressure turbine cylinder inner rotor face temperature, this system can be in cylinder up to reliably working under the supercritical parameter water vapor conditions in 22.2～33MPa pressure and 250～750 ℃ of temperature relative broad ranges, on-line monitoring cylinder internal rotor temperature also can be used for article for rotation surface temperature detection in the container under other similar job requirement.
Background technology
Lasting, the quick and sound development of power industry is the basis of Chinese society economic development and ensures; Meanwhile, domestic pressure at aspects such as the energy and environment has proposed more and more higher requirement to the synergy of thermoelectricity technology, reduction of discharging.Adopting the supercritical generating technology is one of main direction of the world, domestic raising coal group of motors generating efficiency, reduction pollutant emission.The operation of supercritical unit has been played crucial effects to the basic coal consumption level that reduces China's thermal power generation, yet because operational factor height, the dynamic perfromance of supercritical unit are strong, also high more a lot of to the security requirement of unit than conventional unit.
All the time, because Steam Turbine running parameter high (pressure surpasses 10MPa, and temperature is above 400 ℃), routine techniques can not satisfy the demand of people to steam turbine cylinder interior spare working condition condition monitoring.Steam Turbine cylinder inner core parts turbine rotor is owing to be in the supercritical water steam ambient, and changes the temperature variation that takes place by a relatively large margin with operating mode, and thermal stress, the heat fatigue of these parts made a big impact.The important parameter (as Temperature Distribution) of grasping supercritical generating unit cylinder inner core parts is the prerequisite and the basis of it being carried out safety monitoring and evaluation.
Utilize the form mode to carry out the reported in literature and the practical application of online measuring technique for being in the parts under the high temperature and high pressure steam environment (comprising turbine rotor) in the cylinder, having not yet to see.Particularly when need be to having adopted cooling technology, and possess the rotor part of high rotating speed and vibration characteristics, on-line monitoring is carried out in its temperature field, its importance is self-evident.
Approximate substitution parts surface temperature is usually measured by external steam turbine equipment manufacturers near the vapor (steam) temperature the parts with the temperature probe mode in Steam Turbine.As U.S.'s Westinghouse Electrical Corp. international monopoly technology in 1988, this technology is not seen so far as yet significant improvement; The thinking application that Siemens detected in conjunction with vapor (steam) temperature with nerual network technique in 1997 patents such as turbine rotor leaf temperature prediction, above-mentioned patent does not all adopt window structure.
At present aero-turbine is existing comparatively ripe based on window structure and infrared radiation temperature principle, the long-term on-line measurement of engine high-temperature rotatable parts wall temperature.But aeromotor working pressure parameter is far below supercritical water working vapor parameter, and higher being beneficial to very much with colorimetric infrared radiation mode of temperature parameter carried out temperature survey; And in the warm working range in the broad that comprises steam turbine equipment, for example from 250 ℃ to 700 ℃ temperature range, temperature is too low for the two band color comparison temperature measurement mode, it is bigger influenced by emissivity for single band infrared measurement of temperature mode, can produce than obvious variation after the turbine rotor surface long-time running simultaneously, adopt the accurate thermometric of infrared measurement of temperature mode to have big difficulty.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect that prior art exists, a kind of surface temperature detection system that is used for High Temperature High Pressure (as supercritical parameter water vapor medium) container inner rotatable part is provided.This system can container inner pressure up to 22.2～35MPa and 250～700 ℃ of temperature ranges in reliably working, temperature information by way of infrared radiation on-line monitoring container inner rotatable part surface also can be used for the detection instrument technical field under other similar job requirements.
The object of the present invention is achieved like this:
The present invention includes detected object pressure vessel casing wall and rotary body within it;
Be provided with infrared form and sealed interface assembly, infrared high temperature optical fiber, infrared measurement of temperature module, the department of computer science signal cable of unifying;
On the pressure vessel casing wall, be connected with infrared form and sealed interface assembly, be connected successively before and after infrared form and sealed interface assembly, infrared high temperature optical fiber, infrared measurement of temperature module, signal cable and the computing machine;
Infrared form and sealed interface assembly are spatially relative with rotary body by the infrared radiation light path.
Principle of work:
Rotary body in the pressure vessel casing wall constantly discharges infrared emanation, the heat radiation that object the discharged energy that is in infrared radiation light path 60 scopes will be by infrared form and sealed interface assembly, and then propagation arrives the infrared measurement of temperature module in infrared high temperature optical fiber, the infrared measurement of temperature module is converted to the electric signal that computing machine can be discerned with infra red radiation energy signal, offer computing machine by signal cable with the RS232 interface, show by the software in the computing machine again and be provided with.
The present invention has following advantage and good effect:
1. can measure more exactly and be in the broad body surface temperature in 250 ℃～750 ℃ of the high temperature ranges;
2. can measure rotation object surfaces temperature in the high temperature and high pressure containers;
3. after can going up the elimination long-play largely, the emissivity that the variation of testee surface texture causes changes the influence to infrared measurement of temperature.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of infrared form and sealed interface assembly;
Fig. 3 is the structural representation of infrared high temperature optical fiber and window interface;
Fig. 4 is the structural representation of infrared temperature-test sensor;
Fig. 5 is the fundamental diagram of computer software;
Fig. 6 is the workflow diagram of computer software.
Wherein:
10-form and sealed interface assembly,
The 11-sight glass, the 12-protection sleeve, 13-expanded graphite O-ring seal,
The 14-bolt, the 15-metal o-ring, 16-window interface assembly,
17-optical pressure cap assemblies, the soft gasket ring of 18-;
The infrared high temperature optical fiber of 20-,
The 21-optical fiber lens, the 22-optical fiber interface;
30-infrared measurement of temperature module,
31-long-wave band monochromatic sensor, 32-short-wave band colorimetric sensor, 33-signal regulating panel;
The 40-computing machine,
41-follows the tracks of decision block;
The 50-rotary body;
60-infrared radiation light path;
The 70-signal cable;
80-pressure vessel casing wall.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, overall
As Fig. 1, the present invention includes detected object pressure vessel casing wall 80 and rotary body 50 within it;
Be provided with infrared form and sealed interface assembly 10, infrared high temperature optical fiber 20, infrared measurement of temperature module 30, computing machine 40 and signal cable 70;
Be connected with infrared form and sealed interface assembly 10 on pressure vessel casing wall 80, infrared form and sealed interface assembly 10, infrared high temperature optical fiber 20, infrared measurement of temperature module 30, signal cable 70 and computing machine 40 front and back are connected successively;
Infrared form and sealed interface assembly 10 are spatially relative with rotary body 50 by infrared radiation light path 60.
Two, functional block
1, infrared form and sealed interface assembly 10
As Fig. 2, infrared form and sealed interface assembly 10 comprise sight glass 11, sight glass protection sleeve 12, expanded graphite O-ring seal 13, bolt 14, metal o-ring 15, window interface assembly 16, optical fiber interface and seal gland assembly 17 and soft gasket ring 18;
The upper surface of window interface assembly 16 is connected with optical fiber interface and seal gland assembly 17 by bolt 14; The lower surface of window interface assembly 16 is connected with pressure vessel casing wall 80 with metal o-ring 15 by bolt 14;
Inwardly be disposed with expanded graphite O-ring seal 13, soft gasket ring 18, sight glass protection sleeve 12 and sight glass 11 in the centre of window interface assembly 16.
Its principle of work is:
Pressure vessel casing wall 80 is connected by metal o-ring 15 with window interface assembly 16, can proof strength and sealing property requirement; Sight glass 11 stage casings are by 13 sealings of expanded graphite O-ring seal, and epimere has optical fiber interface and seal gland assembly 17 to compress, and hypomere is separated by with pressure vessel casing wall 80 by soft gasket ring 18; Sight glass 11 epimeres, hypomere are right cylinder, and the stage casing is a Rotary-table; Sight glass 11 hypomeres have the sight glass protection sleeve 12 of stainless steel that it is carried out protective effect outward, increase resistance to vibration; Sight glass 11 is filled by expanded graphite O-ring seal 13 with optical fiber interface and seal gland assembly 17 formed cavitys, under high pressure moves up, and the graphite packing of Rotary-table extrusion expansion produces sealing effectiveness; The effect of soft gasket ring 18 is to prevent when sight glass 11 from moving down and chamber wall collides cause cracked; Optical fiber interface and seal gland assembly 17 also have the interface that links to each other with high-temperature infrared optical fiber simultaneously.
The 26S Proteasome Structure and Function of its parts is:
(1) sight glass 11
Be used to conduct the heat radiation energy.
Its selection of material generally comprises infrared quartz glass or sapphire etc., be a kind of can printing opacity, saturating infrared energy also possesses the form material of certain hot strength.
(2) the sight glass protection sleeve 12
Sight glass protection sleeve 12 is a kind of and the adaptive stainless steel sleeve of sight glass 11 shapes, protection sight glass 11.
(3) the expanded graphite O-ring seal 13
Expanded graphite O-ring seal 13 is a kind of and the adaptive expanded graphite tubular of sight glass protection sleeve 12 shaped upper parts, seals.
(4) bolt 14
(5) metal o-ring 15
Metal o-ring 15 is a kind of working standard spares, seals.
(6) the window interface assembly 16
Its function is the cavity and the interface of view component.
(7) the gland assembly 17
Its function has been optical fiber interface and sealing function.
(8) soft gasket ring 18
2, infrared high temperature optical fiber 20
As Fig. 3, the input end of infrared high temperature optical fiber 20 is provided with interface 22, is provided with lens combination 21 in interface 22.
The structure that above gland assembly 17, has inner cylinder face, its diameter matches with the interface 22 of infrared high temperature optical fiber 20 lower ends; Have a lens combination 21 in the interface 22, the radiation energy that scioptics group 21 can pass over form incides in the fibre bundle of infrared high temperature optical fiber 20, has also determined the shape and size of light path 60 among Fig. 1 simultaneously.
3, infrared temperature-test sensor 30
As Fig. 4, infrared temperature-test sensor 30 comprises long-wave band monochromatic sensor 31 parallel with one another and short-wave band colorimetric sensor 32.
1) long-wave band monochromatic sensor 31 is a kind of near infrared (0.7～1.1 μ m) infrared eyes;
Select arsenic gallium indium (InGaAs) type infrared eye or vulcanized lead (PbS) detector for use.
2) short-wave band colorimetric sensor 32 is a kind of short-wave infrared (1～3 μ m) infrared eyes.
Select silicon photoelectric diode type (Si) infrared eye for use.
The principle of work of infrared temperature-test sensor 30 is:
The infrared energy that is come by infrared high temperature optical fiber 20 transmission is divided into two in infrared temperature-test sensor 30, enters long-wave band monochromatic sensor 31 and short-wave band colorimetric sensor 32 respectively; Long-wave band monochromatic sensor 31 is according to the final output temperature indicating value of emissivity parameter, short-wave band colorimetric sensor 32 according to emissivity than the final output temperature indicating value of parameter; Temperature value that two sensors are exported and parameter all can link to each other with computing machine 40 with RS232 by signal cable 70, and show and be provided with by computing machine 40 interior softwares.
4, computing machine 40
1) hardware configuration of computing machine 40 is input equipments such as cpu motherboard, video card, general RS232 interface, display and keyboard and mouse more than 486 grades of using always.
2) software of computing machine 40 is to follow the tracks of decision block.
As Fig. 5, follow the tracks of decision block 41 and comprise signals collecting, logic determines, setting, output etc.
Follow the tracks of decision block 41 and can gather monochromatic, colour temperature signal by the RS232 interface.If this temperature is then exported as end value in colour temperature＞500 ℃, judge monochromatic temperature signal simultaneously; Inconsistent as if monochromatic temperature signal demonstration with the colour temperature demonstration, then revise the emissivity parameter, make it finally consistent, and upgrade this emissivity parameter with the colour temperature demonstration; If monochromatic temperature＜500 ℃, colour temperature shows mistake, then exports monochromatic temperature as end value; Determine according to the special test result when emissivity is installed by system than parameter, generally should not change.
As Fig. 6, the workflow of following the tracks of decision block 41 comprises the following steps:
Beginning 0;
1. read monochromatic thermometric T1 and color comparison temperature measurement T2, monochromatic emissivity ε 1---1;
2. judge whether T1＜500 ℃, T2＜500 ℃---2, be then to enter step 4., otherwise enter step 3.;
Whether the absolute value of difference of 3. judging T1 and T2 less than 0.5, i.e. abs (T1-T2)＜0.5 whether---and 3, being then to pass through ε 1=ε 1-0.01,1.---jumping to step 1. after 5, otherwise through ε 1=ε 1+0.01---jump to step after 6;
4. export T1---4;
Finish 7.
5, the infrared radiation light path 60
Infrared radiation light path 60 is a kind of virtual optical path.
7, signal cable 70
Claims (2)
1. a surface temperature detection system that is used for the high temperature and high pressure containers inner rotatable part comprises detected object pressure vessel casing wall (80) and rotary body (50) within it;
Be provided with infrared form and sealed interface assembly (10), infrared high temperature optical fiber (20), infrared measurement of temperature module (30), computing machine (40) and signal cable (70);
On pressure vessel casing wall (80), be connected with infrared form and sealed interface assembly (10), be connected successively before and after infrared form and sealed interface assembly (10), infrared high temperature optical fiber (20), infrared measurement of temperature module (30), signal cable (70) and the computing machine (40);
Infrared form and sealed interface assembly (10) are spatially relative with rotary body (50) by infrared radiation light path (60);
Described infrared form and sealed interface assembly (10) comprise sight glass (11), sight glass protection sleeve (12), expanded graphite O-ring seal (13), bolt (14), metal o-ring (15), window interface assembly (16), optical fiber interface and seal gland assembly (17) and soft gasket ring (18);
The upper surface of window interface assembly (16) is connected with optical fiber interface and seal gland assembly (17) by bolt (14); The lower surface of window interface assembly (16) is connected with pressure vessel casing wall (80) with metal o-ring (15) by bolt (14);
Inwardly be disposed with expanded graphite O-ring seal (13), soft gasket ring (18), sight glass protection sleeve (12) and sight glass (11) in the centre of window interface assembly (16);
It is characterized in that:
Described infrared measurement of temperature module (30) comprises long-wave band monochromatic sensor (31) parallel with one another and short-wave band colorimetric sensor (32);
Long-wave band monochromatic sensor (31) is a kind of near infrared infrared eye;
Short-wave band colorimetric sensor (32) is a kind of infrared eye of short-wave infrared;
Described computing machine (40) comprises cpu motherboard, video card, general RS232 interface, display, keyboard and mouse more than 486 grades commonly used.
2. by the detection method of the described surface temperature detection system of claim 1, it is characterized in that:
Comprise the following steps:
Beginning (0);
1. read monochromatic thermometric T1 and color comparison temperature measurement T2, monochromatic emissivity ε 1(1);
2. judge whether T1＜500 ℃, T2＜500 ℃ (2) are then to enter step 4., otherwise enter step 3.;
Whether the absolute value of difference of 3. judging T1 and T2 less than 0.5, and (3) are then to pass through ε 1=ε 1-0.01(5) after jump to step 1., otherwise through ε 1=ε 1+0.01(6) after jump to step 1.;
4. export T1(4);
Finish (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105163134A CN102004000B (en) | 2010-10-21 | 2010-10-21 | Surface temperature detection system for rotation part in high-temperature high-pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105163134A CN102004000B (en) | 2010-10-21 | 2010-10-21 | Surface temperature detection system for rotation part in high-temperature high-pressure container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102004000A CN102004000A (en) | 2011-04-06 |
| CN102004000B true CN102004000B (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105163134A Expired - Fee Related CN102004000B (en) | 2010-10-21 | 2010-10-21 | Surface temperature detection system for rotation part in high-temperature high-pressure container |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102564608B (en) * | 2011-12-16 | 2014-03-19 | 姚克农 | Automatic testing system for heat radiation of heater |
| US9863813B2 (en) * | 2012-04-13 | 2018-01-09 | General Electric Company | Flame sensor |
| CN103628983B (en) * | 2013-12-17 | 2015-09-30 | 哈尔滨工程大学 | Turbine blade of gas turbine radiation path dust guard |
| CN103759834A (en) * | 2014-01-24 | 2014-04-30 | 安徽工程大学 | High-voltage switch cabinet contact temperature detection device and method |
| GB2553374B (en) * | 2016-09-06 | 2021-05-12 | Edwards Ltd | Temperature sensor for a high speed rotating machine |
| CN106949977A (en) * | 2017-03-13 | 2017-07-14 | 英吉森安全消防系统（上海）有限公司 | A kind of lens structure of flame detector |
| DE202018104455U1 (en) * | 2018-08-02 | 2019-11-08 | Milestone S.R.L. | Pressure vessel with high pressure window |
| CN112525888A (en) * | 2020-10-21 | 2021-03-19 | 河钢股份有限公司 | Device and method for rapidly detecting temperature and components of vacuum induction furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1041352C (en) * | 1993-05-07 | 1998-12-23 | 浙江大学 | Subtractive radiation thermometry and thermometer |
| JP2005195524A (en) * | 2004-01-09 | 2005-07-21 | Japan Science & Technology Agency | Layered type multicolored photoelectric element, temperature measuring method using the same element, and its instrument |
| CN2729668Y (en) * | 2004-09-14 | 2005-09-28 | 吴爱华 | Apparatus for measuring temp. of high-temp. liquid |
| CN101153822B (en) * | 2007-10-16 | 2011-05-25 | 浙江红相科技有限公司 | Infrared window and its production method and its application in infrared imaging detection of electrical equipment |
| CN101358881A (en) * | 2008-06-16 | 2009-02-04 | 北京航空航天大学 | Two band color comparison temperature measurement method based on single colourful CCD video camera |
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