CN104867525A - Medium voltage electric penetration assembly with thermocouple temperature measuring assembly - Google Patents
Medium voltage electric penetration assembly with thermocouple temperature measuring assembly Download PDFInfo
- Publication number
- CN104867525A CN104867525A CN201510246611.9A CN201510246611A CN104867525A CN 104867525 A CN104867525 A CN 104867525A CN 201510246611 A CN201510246611 A CN 201510246611A CN 104867525 A CN104867525 A CN 104867525A
- Authority
- CN
- China
- Prior art keywords
- thermocouple
- assembly
- electrical penetration
- stainless steel
- temperature measurement
- Prior art date
- 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.)
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/032—Joints between tubes and vessel walls, e.g. taking into account thermal stresses
- G21C13/036—Joints between tubes and vessel walls, e.g. taking into account thermal stresses the tube passing through the vessel wall, i.e. continuing on both sides of the wall
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a medium voltage electric penetration assembly with a thermocouple temperature measuring assembly. The electric penetration assembly comprises three medium voltage power conductors and further comprises an E-shaped twin thermocouple assembly used for measuring insulation material surface temperature of at least one medium voltage power conductor. The E-shaped twin thermocouple assembly can monitor the insulation surface temperature of the conductor in a barrel in real time and transmit the signals for a long distance. The added thermocouple cable does not affect electric performance and air tightness of the medium voltage penetration assembly. The use temperature of the E-shaped thermocouple is -200-900 DEG C, the sensitivity is high, and the electric penetration assembly is used for measuring tiny temperature change.
Description
Technical field
The present invention relates to the middle pressure electrical penetration can monitoring conductor temperature, belong to electrical penetration technical field.
Background technology
Electrical penetration is mounted on npp safety shell, and for the dedicated electrical device of cable penetration containment, the part as containment forms the safety curtain of reactor.Ensure continuity and the reliability of reactor building and other factory buildings electric signal under normal and various accident condition, maintain integrality and the sealing of reactor building pressure boundary, prevent leaking of radiomaterial, therefore the safe and stable operation of electrical penetration to nuclear power station is responsible for vital role, is one of important leverage of nuclear plant safety operation.
In the AP1000 of generation Ⅲ nuclear power station, pressure power electrical penetration provides three-phase power for reactor coolant pump motor, be arranged between medium voltage frequency converter and reactor coolant pump, therefore the electrical design parameter of medium voltage frequency converter is met, rated voltage 6900V, specified continuous current 882A.Middle pressure power conductor continues to work under rated current, certainly will cause temperature rise of conductor, and due to the impermeability requirement of penetration piece, the heat accumulation that conductor produces is in the cylindrical shell of sealing.The hot environment continued can cause conductor insulation hydraulic performance decline, thus affects the serviceable life of organic insulation.Along with the development of the third generation, Generation Ⅳ, new requirement is also proposed to electrical penetration, except under the accident conditionses such as more and more harsh earthquake, LOCA, require that electrical penetration still can keep it functional, and the qualified life of electrical penetration was extended to 60 years by 40 years.This just proposes new requirement to the thermal lifetime of the organic insulation that existing electrical penetration adopts.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide and a kind ofly press electrical penetration with in thermocouple temperature measurement assembly, can conductor temperature be monitored.
To achieve these goals, technical scheme of the present invention is as follows:
Pressing an electrical penetration with in thermocouple temperature measurement assembly, comprise three middle pressure power conductors, it is characterized in that, also comprising E type two thermocouple assemblies of the insulating material surface temperature for measuring at least one middle pressure power conductor.
Preferably, described with pressing electrical penetration also to comprise an earth conductor in thermocouple temperature measurement assembly.Further, described middle pressure electrical penetration comprises stainless steel end flanges, and described three middle pressure power conductors, an earth conductor and E types two thermocouple assemblies run through stainless steel end flanges.
More preferably, described E type two thermocouple assemblies seal taper thread and silver brazing and stainless steel end flanges by copper and are tightly connected.
Preferably, the outside of described middle pressure power conductor is provided with Insulating heat shrink and stainless steel outer sleeve pipe from inside to outside successively, described Insulating heat shrink is insulating material, the stainless steel outer sleeve pipe of at least one middle pressure power conductor is provided with through hole, and the measuring junction of E type two thermocouple assemblies is located at the outside of Insulating heat shrink via described through hole.
Preferably, described E type two thermocouple assemblies connect terminal temperature Displaying Meter by compensating wire.
Preferably, described E type two thermocouple assemblies are located in stainless steel outer sleeve pillar.
E type used in the present invention two thermocouple assemblies can Real-Time Monitoring cylindrical shell inner wire insulating surface temperature, and by the signal is far passed, and the thermocouple cable installed additional presses electric property and the impermeability of penetration piece in not affecting.
E type of the present invention two thermocouple assemblies are located in stainless steel outer sleeve pillar.So whole thermocouple assembly has fabulous resistance to irradiation, anti-aging, high temperature resistant, high pressure resistant and manufacture, install, change convenient, be applicable to nuclear power plant environment.And E type thermopair serviceability temperature is-200 ~ 900 degree, highly sensitive, be applicable to measure small temperature variation.
The detailed description and obtaining that feature of the present invention can consult the graphic and following better embodiment of this case is well understood to.
Accompanying drawing explanation
Fig. 1 presses electrical penetration structural representation with in thermocouple temperature measurement assembly.
Fig. 2 is that E type two thermopairs are in middle pressure electrical penetration fixed installation detail view.
Wherein, 1, stainless steel end flanges; 2, middle pressure power conductor; 3, earth conductor; 4, E type two thermocouple assemblies; 5, copper sealing taper thread; 6, stainless steel outer sleeve pipe; 7, Insulating heat shrink.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, setting forth the present invention further below in conjunction with specific embodiment.
See Fig. 1, a kind ofly press electrical penetration with in thermocouple temperature measurement assembly, comprise the middle pressure power conductor 2 (3 phase) of the stainless steel end flanges 1, three being located at barrel end, an earth conductor 3 and E type two thermocouple assemblies 4.E type two thermocouple assemblies 4 are for measuring the insulating material surface temperature of a wherein middle pressure power conductor 2.Described three middle pressure power conductors 2, earth conductor 3 and E type two thermocouple assemblies 4 run through stainless steel end flanges 1.
As shown in Figure 2, the outside of described middle pressure power conductor 2 is provided with Insulating heat shrink 7 and stainless steel outer sleeve pipe 6 from inside to outside successively, described Insulating heat shrink 7 is described insulating material, the stainless steel outer sleeve pipe 6 of middle pressure power conductor 2 is provided with the circular hole of Φ 4mm, the measuring junction being positioned at E type two the thermocouple assemblies 4 of cylindrical shell is located at outside Insulating heat shrink 7 through described circular hole, for measuring its surface temperature, the other end being positioned at E type two the thermocouple assemblies 4 outside cylindrical shell connects terminal temperature Displaying Meter by compensating wire.Described E type two thermocouple assemblies 4 are located in stainless steel outer sleeve pillar.Described E type two thermocouple assemblies 4 adopt copper to seal taper thread 5 and silver brazing and stainless steel end flanges 1 and are tightly connected.
During installation, at the outside surface of middle pressure power conductor 2, adopt Insulating heat shrink 7 to insulate, then insert in stainless steel outer sleeve pipe 6.Stainless steel outer sleeve pipe 6 has the circular hole of Φ 4mm in order to insert the measuring junction of E type thermocouple assembly 4.After first-phase conductor assembly is installed, after the circular hole of Φ 4mm is inserted in the measuring junction brake forming of E type two thermocouple assemblies 4, other two-phase conductor assemblies are installed again.E type thermopair seal assembly adopts copper sealing taper thread 5 to realize the sealing of E type two thermocouple assemblies 4 and stainless steel end flanges 1, the tapering of copper sealing taper thread 5 adopts 1:16, and adopt silver brazing with E type two thermocouple assemblies 4, realize the sealing that E type two thermocouple assemblies 4 and copper seals taper thread 5, thus realize the integral sealing of E type two thermocouple assemblies 4 and penetration piece.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and instructions; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (7)
1. pressing an electrical penetration with in thermocouple temperature measurement assembly, comprise three middle pressure power conductors, it is characterized in that, also comprising E type two thermocouple assemblies of the insulating material surface temperature for measuring at least one middle pressure power conductor.
2. according to claim 1ly press electrical penetration with in thermocouple temperature measurement assembly, it is characterized in that, described with pressing electrical penetration also to comprise an earth conductor in thermocouple temperature measurement assembly.
3. according to claim 2ly press electrical penetration with in thermocouple temperature measurement assembly, it is characterized in that, described middle pressure electrical penetration comprises stainless steel end flanges, and described three middle pressure power conductors, an earth conductor and E types two thermocouple assemblies run through stainless steel end flanges.
4. according to claim 3ly press electrical penetration with in thermocouple temperature measurement assembly, it is characterized in that, described E type two thermocouple assemblies are tightly connected by copper sealing taper thread and silver brazing and stainless steel end flanges.
5. according to claim 1ly press electrical penetration with in thermocouple temperature measurement assembly, it is characterized in that, the outside of described middle pressure power conductor is provided with Insulating heat shrink and stainless steel outer sleeve pipe from inside to outside successively, described Insulating heat shrink is insulating material, the stainless steel outer sleeve pipe of at least one middle pressure power conductor is provided with through hole, and the measuring junction of E type two thermocouple assemblies is located at the outside of Insulating heat shrink via described through hole.
6. according to claim 1ly press electrical penetration with in thermocouple temperature measurement assembly, it is characterized in that, described E type two thermocouple assemblies connect terminal temperature Displaying Meter by compensating wire.
7. according to claim 5ly press electrical penetration with in thermocouple temperature measurement assembly, it is characterized in that, described E type two thermocouple assemblies are located in stainless steel outer sleeve pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246611.9A CN104867525A (en) | 2015-05-14 | 2015-05-14 | Medium voltage electric penetration assembly with thermocouple temperature measuring assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246611.9A CN104867525A (en) | 2015-05-14 | 2015-05-14 | Medium voltage electric penetration assembly with thermocouple temperature measuring assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104867525A true CN104867525A (en) | 2015-08-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510246611.9A Pending CN104867525A (en) | 2015-05-14 | 2015-05-14 | Medium voltage electric penetration assembly with thermocouple temperature measuring assembly |
Country Status (1)
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| CN (1) | CN104867525A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913884A (en) * | 2016-06-01 | 2016-08-31 | 上海发电设备成套设计研究院 | Nuclear power station electrical penetration piece gas state monitoring system |
| CN106448839A (en) * | 2016-10-12 | 2017-02-22 | 浙江伦特机电有限公司 | Instrument cable assembly for nuclear power station |
| CN106898391A (en) * | 2017-02-21 | 2017-06-27 | 上海交通大学 | Threader |
| CN107578834A (en) * | 2017-09-12 | 2018-01-12 | 浙江伦特机电有限公司 | Nuclear power plant is special can core pulling quick response thermometer |
| CN110853776A (en) * | 2019-10-21 | 2020-02-28 | 国核工程有限公司 | Nuclear power station electrical penetration assembly and installation method thereof |
-
2015
- 2015-05-14 CN CN201510246611.9A patent/CN104867525A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913884A (en) * | 2016-06-01 | 2016-08-31 | 上海发电设备成套设计研究院 | Nuclear power station electrical penetration piece gas state monitoring system |
| CN106448839A (en) * | 2016-10-12 | 2017-02-22 | 浙江伦特机电有限公司 | Instrument cable assembly for nuclear power station |
| CN106448839B (en) * | 2016-10-12 | 2017-10-27 | 浙江伦特机电有限公司 | Instrument cable for nuclear power station component |
| CN106898391A (en) * | 2017-02-21 | 2017-06-27 | 上海交通大学 | Threader |
| CN107578834A (en) * | 2017-09-12 | 2018-01-12 | 浙江伦特机电有限公司 | Nuclear power plant is special can core pulling quick response thermometer |
| CN110853776A (en) * | 2019-10-21 | 2020-02-28 | 国核工程有限公司 | Nuclear power station electrical penetration assembly and installation method thereof |
| CN110853776B (en) * | 2019-10-21 | 2021-12-17 | 上海核工程研究设计院有限公司 | Nuclear power station electrical penetration assembly and installation method thereof |
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| PB01 | Publication | ||
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Application publication date: 20150826 |