CN205582513U - 1E level reactor reactor core temperature measurement equipment for nuclear power station - Google Patents
1E level reactor reactor core temperature measurement equipment for nuclear power station Download PDFInfo
- Publication number
- CN205582513U CN205582513U CN201620253197.4U CN201620253197U CN205582513U CN 205582513 U CN205582513 U CN 205582513U CN 201620253197 U CN201620253197 U CN 201620253197U CN 205582513 U CN205582513 U CN 205582513U
- Authority
- CN
- China
- Prior art keywords
- plug
- socket
- thermocouple
- jack
- nuclear power
- 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.)
- Withdrawn - After Issue
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- 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
Abstract
The utility model discloses a 1E level reactor reactor core temperature measurement equipment for nuclear power station, its connector that includes armoured thermocouple, armoured thermocouple compensating cable, connection thermocouple and compensating cable, connector include plug and socket, and plug and socket all are the joint of contact pin and jack coenosarc, and the contact pin insert the plug's of plug jack, the contact pin of socket insert to be realized the electricity in the jack of plug and connect, by the insulating material cladding around the jack, the plug passes through screw thread fixed connection with the shell of socket, and the kneck adopts the sealing washer sealed, the tail end hole oral area of plug, socket sets up two lapped cutting ferrules, compresses tightly the piece through the tail end of threaded connection at plug, socket to the perforation running line that pass tail end is compressed tightly through the cutting ferrule. This measuring equipment can reach that the insulating properties that nuclear safety level required is good, the interference killing feature strong, the radioresistance.
Description
Technical field
This utility model relates to used in nuclear power station 1E order reaction heap core temperature and measures equipment.
Background technology
Requirement is designed according to pressurized-water reactor nuclear power plant, 1E order reaction heap core temperature is measured equipment and be should be nuclear safe level, according to the requirement of nuclear safe level instrumentation, measure equipment and under design basis accident and major accident operating mode, reliably to provide Core cooling agent outlet temperature.Under loss of-coolant accident (LOCA) operating mode, in containment, environmental aspect is extremely severe, is filled with about 150 180 DEG C and the water vapour of 0.5MPa pressure and boron water in shell, and humidity is up to 100%, and also has the strongest radioactivity；Under earthquake accident conditions, due to reactor plant and the sharp pounding of component, the connection between the parts part in measurement equipment may be made to loosen or disengage, and causing measurement to lose efficacy.And existing industry armoured thermocouple connector be not antidetonation, be weak under irradiation and high temperature packing less, so adverse circumstances normally can not work in containment；The insulation resistance of conventional K-type armoured thermocouple does not reaches core level requirement, so normally can not work in the environment in pressure vessel and containment.
It is therefore desirable to a kind of temperature measuring equipment of design, Core cooling agent outlet temperature can not only be provided under nuclear power station normal running (operation) conditions, and will be under nuclear power station design basis accident and major accident operating mode, it is provided that Core cooling agent outlet temperature, to ensure the safety of nuclear power station.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the above-mentioned deficiency of prior art to provide nuclear power station 1E order reaction heap core temperature to measure equipment, and the insulating properties reaching nuclear safe level requirement are good, capacity of resisting disturbance strong, radioprotective.
The technical scheme in the invention for solving the above technical problem is: nuclear power station 1E order reaction heap core temperature measures equipment, including armoured thermocouple, armoured thermocouple compensating cable, connect thermocouple and the connector of compensating cable, connector includes plug and socket, plug and socket is all the joint of contact pin and jack coenosarc, realizing electrical connection in the jack of the contact pin insertion plug that the contact pin of plug inserts the jack of socket, socket, the surrounding of jack is coated with by insulant；Plug is threadably secured with the shell of socket and is connected, and seam uses sealing ring to seal；Plug, the tail end endoporus oral area of socket arrange the cutting ferrule of two overlap joints, and compressing member is threadedly attached in the tail end of plug, socket, and compresses the perforation running line through tail end by cutting ferrule.
Preferably the housing of connector is 316L rustless steel, and contact pin, the material of jack are chromel-alumel, and insulant is polyether-ether-ketone.
Preferably sealing ring material is ethylene propylene diene rubber.
Use laser welding between thermo wires and contact pin, socket in connector, and use a spoonful shape wire clamp isolation, in spoon shape wire clamp groove, fill up High temp. epoxy resins.
The thermocouple wire of armoured thermocouple is K-type chromel-alumel material, and insulant is aluminium oxide, and shell material is 316L rustless steel, and the cold end high-temp epoxy tree resin-encapsulated of thermocouple seals.
The external diameter of armoured thermocouple is 3.17mm, and the external diameter measuring end is 2.28 ± 0.1mm, a length of 19 ± 1mm, measures the thermocouple wire laser welding within end and connects, and the measurement end of armoured thermocouple is with from molten argon arc welding potting.
The thermocouple wire of armoured thermocouple compensating cable is K-type chromel-alumel material, and insulant is aluminium oxide, and shell material is 316L rustless steel, and the two ends of sleeve pipe high-temp epoxy tree resin-encapsulated seals.
Insulant aluminium oxide removes moisture through bleeding, high-temperature baking, and armor sleeve inner surface is through spilling essence cleaning, drying.
The utility model has the advantage of: 1, temperature measuring equipment includes armoured thermocouple, armoured thermocouple compensating cable, connects thermocouple and the connector of compensating cable, facilitate in reactor fuel Renewal process and be separated from each other, connect, because designing requirement according to pressurized-water reactor nuclear power plant, reactor core fuel requirement regularly replaces, armoured thermocouples etc. can be removed with the upper cover of pressure vessel or reset, and operation of conveniently reloading.2, connector is two contact pins, the joint of jack coenosarc, and during connection, the alignment mode of contact pin and jack is unique, prevents wrong circuit.3, connector tail end uses two cutting ferrules to compress perforation running line, and plug and socket is fixed the seam of connection and used EPT rubber packing circle to seal, and can prevent high temperature, high pressure and hot steam from leaking into inside connector, anti-interference or radiation.4, contact pin, jack, thermocouple wire, plug shell, the selection of insulant and connected mode, processing method etc., it is ensured that insulation resistance is all not less than 5 × 109 Ω .m, meets nuclear safe level requirement.5, the external diameter necking down of measurement end is to 2.28 ± 0.1mm, can reduce the response time of thermometric, improves performance.6, the material that thermo wires, insulant, sleeve pipe etc. are selected can meet the requirement of nuclear safe level further.
Accompanying drawing explanation
Fig. 1 is the temperature measuring equipment STRUCTURE DECOMPOSITION figure of this utility model embodiment.
Fig. 2 be in Fig. 1 A-A to observation view.
Fig. 3 is the sectional view in B-B face in Fig. 1.
Fig. 4 is plug and socket attachment structure schematic diagram in Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model is further illustrated by embodiment.
Measurement equipment as shown in Fig. 1 includes that 1, two sections of armoured thermocouple compensating cable 4, two sets of armoured thermocouple connect thermocouple and the connector of compensating cable.
Armoured thermocouple 1 is inserted into reactor core exit by the guide pipe in the sealing device of reactor pressure vessel upper cover and pressure vessel, is used for measuring the outlet temperature of coolant.The thermocouple wire of armoured thermocouple 1 is K-type chromel-alumel material, and insulant is aluminium oxide, and shell material is 316L rustless steel.The cold end high-temp epoxy tree resin-encapsulated of thermocouple seals, external diameter is 3.17mm, the external diameter measuring end 11 of end is less, it is 2.28 ± 0.1mm, a length of 19 ± 1mm, measure the thermocouple wire laser welding within end 11 to connect, make solder joint little and firm, to ensure that its response time meets the requirement of 1 second and high insulation resistance, the measurement end of armoured thermocouple 1 is with from molten argon arc welding potting, ensure the integrity that armor sleeve is good, prevent steam internal hemorrhage due to trauma, it is ensured that the armoured thermocouple high insulation resistance in the pressure vessel of high temperature, high pressure and hot steam.
For further improving its insulation resistance, the insulant aluminium oxide in thermocouple removes moisture through bleeding, high-temperature baking, and armor sleeve inner surface is through spilling essence cleaning, drying.
Armoured thermocouple compensating cable 4 is the extended line of armoured thermocouple 1, is used for being delivered to the temperature signal of armoured thermocouple 1 electrical penetration of containment.The thermocouple wire of armoured thermocouple compensating cable 4 is K-type chromel-alumel material, and insulant is aluminium oxide, and shell material is 316L rustless steel, and the two ends of sleeve pipe high-temp epoxy tree resin-encapsulated seals.
Connector is used for connecting or disconnecting reactor core armoured thermocouple 1, armoured thermocouple compensating cable 4, and often set connector includes plug 2, socket 3.Plug 2 and socket 3 are the joint of male-female: the left view of socket 3 such as Fig. 2, the top fixing plug pin 31 of receptacle center, bottom fixed jack 32, are coated with by insulant polyether-ether-ketone around jack.The sectional view of plug 2, as it is shown on figure 3, the top locking-type plug jack 21 of plug core, is coated with by insulant polyether-ether-ketone around plug-socket；Plug core bottom locking-type plug contact pin 22.Plug insertion pin 22 inserts jack 32, and contact pin 31 inserts plug-socket 21, it is achieved the circuit between plug 2 and socket 3 connects, and such connected mode can ensure that the alignment mode of plug 2 and socket 3 is unique, prevent wrong.The material of contact pin and jack is K-type chromel-alumel; thermo wires laser welding in contact pin, jack and plug or socket connects; and use a spoonful shape wire clamp isolation; High temp. epoxy resins is filled up in spoon shape wire clamp groove; seal and reinforce the solder joint of thermo wires; protection and sealing contact pin, jack, thermo wires, it is ensured that the insulation resistance that connector is high.
As shown in Figure 4, the case material of plug 2 and socket 3 is 316L rustless steel to the fixed form of plug 2 and socket 3.The outer rim of plug 2, with closely-pitched external screw thread, is set with thread bush 33 outside socket 3, plug 2 is docked by thread bush 33 with the shell of socket 3, and uses O RunddichtringO 5 to seal at joint, and sealing ring material is ethylene propylene diene rubber.
The tail end of socket 3 all sections of being threaded 34, thread segment 34 is with external screw thread, perforation running line is through thread segment 34 endoporus, thread segment 34 right-end openings is built with taper cutting ferrule 35, taper cutting ferrule 35 right-end openings is built with ring-shaped clamping sleeve 36, compressing member 37 is locked thread segment 34, and compresses perforation running line by thread segment 34, taper cutting ferrule 35, ring-shaped clamping sleeve 36.Bore a hole with it fixed form of running line of plug 2 is same, and the running line that is provided to prevent to bore a hole loosens, and prevents high temperature, high pressure and hot steam from entering socket 3, the inside of plug 2.
This measurement equipment nuclear safe level K1 class is identified, K1 qualification test procedure is for identifying that the equipment that is arranged in npp safety shell and/or remains to perform the function of its regulation under seismic (seismal, during normal, accident under the conditions of post accident environment, including the special qualification test procedure under standard quality evaluation program, antiseismic test procedure, radiation aging test procedure, accident environmental condition, through identifying, this measurement equipment can the most normally work:
Claims (7)
1. used in nuclear power station 1E order reaction heap core temperature measures equipment, it is characterized in that: include armoured thermocouple, armoured thermocouple compensating cable, connect thermocouple and the connector of compensating cable, connector includes plug and socket, plug and socket is all the joint of contact pin and jack coenosarc, realizing electrical connection in the jack of the contact pin insertion plug that the contact pin of plug inserts the jack of socket, socket, the surrounding of jack is coated with by insulant；Plug is threadably secured with the shell of socket and is connected, and seam uses sealing ring to seal；Plug, the tail end endoporus oral area of socket arrange the cutting ferrule of two overlap joints, and compressing member is threadedly attached in the tail end of plug, socket, and compresses the perforation running line through tail end by cutting ferrule.
Used in nuclear power station 1E order reaction heap core temperature the most according to claim 1 measures equipment, it is characterised in that: the housing of described connector is 316L rustless steel, and contact pin, the material of jack are chromel-alumel, and insulant is polyether-ether-ketone.
Used in nuclear power station 1E order reaction heap core temperature the most according to claim 1 measures equipment, it is characterised in that: described sealing ring material is ethylene propylene diene rubber.
Used in nuclear power station 1E order reaction heap core temperature the most according to claim 1 measures equipment, it is characterized in that: between thermocouple wire and contact pin, the socket in described connector, use laser welding, and use a spoonful shape wire clamp isolation, fill up High temp. epoxy resins in spoon shape wire clamp groove.
Used in nuclear power station 1E order reaction heap core temperature the most according to claim 1 measures equipment, it is characterized in that: the thermocouple wire of armoured thermocouple is K-type chromel-alumel material, insulant is aluminium oxide, and shell material is 316L rustless steel, the cold end High temp. epoxy resins potting of thermocouple.
Used in nuclear power station 1E order reaction heap core temperature the most according to claim 5 measures equipment, it is characterized in that: the external diameter of armoured thermocouple is 3.17mm, the external diameter measuring end is 2.28 ± 0.1mm, a length of 19 ± 1mm, measuring the thermocouple wire laser welding within end to connect, the measurement end of armoured thermocouple is with from molten argon arc welding potting.
Used in nuclear power station 1E order reaction heap core temperature the most according to claim 1 measures equipment, it is characterized in that: the thermocouple wire of armoured thermocouple compensating cable is K-type chromel-alumel material, insulant is aluminium oxide, shell material is 316L rustless steel, the two ends of sleeve pipe High temp. epoxy resins potting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620253197.4U CN205582513U (en) | 2016-03-30 | 2016-03-30 | 1E level reactor reactor core temperature measurement equipment for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620253197.4U CN205582513U (en) | 2016-03-30 | 2016-03-30 | 1E level reactor reactor core temperature measurement equipment for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205582513U true CN205582513U (en) | 2016-09-14 |
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ID=56867378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620253197.4U Withdrawn - After Issue CN205582513U (en) | 2016-03-30 | 2016-03-30 | 1E level reactor reactor core temperature measurement equipment for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205582513U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741894A (en) * | 2016-03-30 | 2016-07-06 | 宁波奥崎自动化仪表设备有限公司 | 1E-grade reactor pile core temperature measurement equipment for nuclear power plant |
| CN107607213A (en) * | 2017-10-20 | 2018-01-19 | 浙江春晖仪表股份有限公司 | A kind of thermocouple that function is reinforced with antidetonation insulation |
-
2016
- 2016-03-30 CN CN201620253197.4U patent/CN205582513U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741894A (en) * | 2016-03-30 | 2016-07-06 | 宁波奥崎自动化仪表设备有限公司 | 1E-grade reactor pile core temperature measurement equipment for nuclear power plant |
| CN107607213A (en) * | 2017-10-20 | 2018-01-19 | 浙江春晖仪表股份有限公司 | A kind of thermocouple that function is reinforced with antidetonation insulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20190426 |