CN111326268A - Device for sealing temperature measurement lead in thermal oscillation test - Google Patents
Device for sealing temperature measurement lead in thermal oscillation test Download PDFInfo
- Publication number
- CN111326268A CN111326268A CN202010088486.4A CN202010088486A CN111326268A CN 111326268 A CN111326268 A CN 111326268A CN 202010088486 A CN202010088486 A CN 202010088486A CN 111326268 A CN111326268 A CN 111326268A
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- China
- Prior art keywords
- sheath
- lead
- flange
- sealing
- temperature measurement
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/112—Measuring temperature
-
- 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 invention belongs to the technical field of temperature measurement of thermal oscillation tests, and particularly relates to a device for sealing a temperature measurement lead of a thermal oscillation test, which comprises: go up flange and lower flange, two flange axial respectively open have a plurality of outer thin interior thick reducing passageway, set up respectively in the reducing passageway from top to bottom with upper and lower reducing passageway shape assorted sheath and cutting ferrule, set up hollow cylinder ring between sheath and the cutting ferrule, be equipped with lead wire groove in sheath and the cutting ferrule, the cable passes through in sheath, cylinder ring, the cutting ferrule in proper order, upper and lower flange compresses tightly sealedly through the fastener. The invention leads out the thermocouple temperature measuring wire by installing the penetrating piece on the rack, ensures the sealing performance of the lead under various complex working conditions, can realize good sealing performance of the rack at the temperature measuring lead under the complex test environment working conditions, is beneficial to developing the thermal oscillation test design and provides a sealing means for other racks needing lead sealing.
Description
Technical Field
The invention belongs to the technical field of temperature measurement of thermal oscillation tests, and particularly relates to a device for sealing a temperature measurement lead of a thermal oscillation test.
Background
In the fast reactor core, under the influence of uneven heat productivity of various component rod bundles, the temperatures of the coolants flowing through different channels are different, and when the coolants are mixed in a cavity in the core, a complex high-frequency temperature oscillation phenomenon is generated near a central measuring column. This phenomenon may not only affect the accuracy of the core outlet temperature measurement, but also may cause thermal fatigue and thermal aging of the central measurement column above the core outlet, which in turn affects the control and protection actions of the reactor, and thus its normal operation. Therefore, the high-frequency temperature oscillation phenomenon in the fluid area near the lower end socket of the central plug column of the plug under different working conditions is simulated by designing the thermal oscillation test stand, the thermal oscillation phenomenon and key parameters under each working condition are recorded, and the influence of the thermal oscillation phenomenon on thermal fatigue of the central plug column is explored. The research on the thermal oscillation phenomenon is facilitated by measuring the temperature change of the lower end socket of the central column close to the wall surface, and the method is also a key step of the thermal oscillation test.
The temperature measurement lead sealing device plays an important role in measuring thermal oscillation test data. Good sealing is a key step for success or failure of a test, a lead sealing device is one of the most prone devices to failure and breakdown in a test bench, and due to the fact that the problem of leakage of the bench is endless due to failure of the sealing device, the fact that the lead sealing device is well made in the test has great significance for the test.
Disclosure of Invention
In order to solve the technical problem, the invention provides a device for sealing a temperature measurement lead wire in a thermal oscillation test, which comprises: go up flange and lower flange, two flange axial respectively open have a plurality of outer thin interior thick reducing passageway, set up respectively in the reducing passageway from top to bottom with upper and lower reducing passageway shape assorted sheath and cutting ferrule, set up hollow cylinder ring between sheath and the cutting ferrule, be equipped with lead wire groove in sheath and the cutting ferrule, the cable passes through in sheath, cylinder ring, the cutting ferrule in proper order, upper and lower flange compresses tightly sealedly through the fastener.
The sheath is divided into two halves along the axis direction, and the two halves need to be taken out separately in the threading and wire taking processes, so that the signal wire is protected, and the cable is prevented from being cut.
The cylindrical ring extrudes the clamping sleeve under the action of the pretightening force of the flange, so that the clamping sleeve deforms and compresses the cable.
The clamping sleeve is divided into two halves along the axis direction, and the two halves need to be taken out separately in the threading and wire taking processes, deform under extrusion, compress the cable and play a role in sealing.
The cable is a thermocouple signal wire, the diameter is 2mm, and the number is 10.
The minimum position of the opening of the upper flange is 15.5 mm.
The lower flange is arranged on the container through reducing and connecting pipes, and the minimum position of the opening is 15.5 mm.
The sealing steps of the device are as follows:
step 1, leading out a lead wire from equipment after a thermocouple is arranged at a position of a measuring point;
step 2, loosening the fastener ① by using a wrench, taking the fastener off, and then taking off the upper flange ④, separately taking off the sheath ②, the cylindrical ring ③ and separately taking off the clamping sleeve ⑥;
step 3, sequentially penetrating each plug lead through a lower flange ⑤, and respectively installing a clamping sleeve ⑥ and a cylindrical ring ③ to ensure that the lead is placed in a clamping sleeve lead groove and prevent the lead from being crushed in the fastening piece pressing process;
step 4, placing an upper flange ④, and installing a fastener ①;
step 5, installing a sheath ②, and adjusting the length of the wire to a proper position;
step 6, evenly locking fasteners ①.
The invention has the beneficial effects that:
the device for sealing the temperature measurement lead of the thermal oscillation test is characterized in that a thermocouple temperature measurement wire is led out by installing a penetrating piece on a rack, the sealing performance of the lead under various complex working conditions is guaranteed, the good sealing performance of the rack at the temperature measurement lead under the complex test environment working conditions can be realized, the development of the thermal oscillation test design is facilitated, and a sealing means is provided for other racks needing lead sealing.
Drawings
FIG. 1 is a schematic representation of the present invention wherein ① -fasteners, ② -sheaths, ③ -cylindrical rings, ④ -upper flange, ⑤ -lower flange, ⑥ -ferrules, ⑦ -cables
Detailed Description
The embodiments are described in detail below with reference to the accompanying drawings.
The invention provides a device for sealing a temperature measurement lead wire in a thermal oscillation test, which comprises: go up flange and lower flange, two flange axial respectively open have a plurality of outer thin interior thick reducing passageway, set up respectively in the reducing passageway from top to bottom with upper and lower reducing passageway shape assorted sheath and cutting ferrule, set up hollow cylinder ring between sheath and the cutting ferrule, be equipped with lead wire groove in sheath and the cutting ferrule, the cable passes through in sheath, cylinder ring, the cutting ferrule in proper order, upper and lower flange compresses tightly sealedly through the fastener.
The sheath is divided into two halves along the axis direction, and the two halves need to be taken out separately in the threading and wire taking processes, so that the signal wire is protected, and the cable is prevented from being cut.
The cylindrical ring extrudes the clamping sleeve under the action of the pretightening force of the flange, so that the clamping sleeve deforms and compresses the cable.
The clamping sleeve is divided into two halves along the axis direction, and the two halves need to be taken out separately in the threading and wire taking processes, deform under extrusion, compress the cable and play a role in sealing.
The cable is a thermocouple signal wire, the diameter is 2mm, and the number is 10.
The minimum position of the opening of the upper flange is 15.5 mm.
The lower flange is arranged on the container through reducing and connecting pipes, and the minimum position of the opening is 15.5 mm.
The sealing steps of the device are as follows:
step 1, leading out a lead wire from equipment after a thermocouple is arranged at a position of a measuring point;
step 2, loosening the fastener ① by using a wrench, taking the fastener off, and then taking off the upper flange ④, separately taking off the sheath ②, the cylindrical ring ③ and separately taking off the clamping sleeve ⑥;
step 3, sequentially penetrating each plug lead through a lower flange ⑤, and respectively installing a clamping sleeve ⑥ and a cylindrical ring ③ to ensure that a cable ⑦ is placed in a clamping sleeve lead groove and prevent the lead from being crushed in the fastening piece pressing process;
step 4, placing an upper flange ④, and installing a fastener ①;
step 5, installing a sheath ②, and adjusting the length of the wire to a proper position;
step 6, evenly locking fasteners ①.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An apparatus for thermal shock testing a temperature measurement lead seal, comprising: go up flange and lower flange, two flange axial respectively open have a plurality of outer thin interior thick reducing passageway, set up respectively in the reducing passageway from top to bottom with upper and lower reducing passageway shape assorted sheath and cutting ferrule, set up hollow cylinder ring between sheath and the cutting ferrule, be equipped with lead wire groove in sheath and the cutting ferrule, the cable passes through in sheath, cylinder ring, the cutting ferrule in proper order, upper and lower flange compresses tightly sealedly through the fastener.
2. The device for sealing a temperature measurement lead wire for a thermal oscillation test according to claim 1, wherein the sheath is divided into two halves along the axial direction, and the two halves are taken out separately during threading and taking out, so as to protect the signal wire and prevent the cable from being cut.
3. The device for sealing the temperature measurement lead wire for the thermal oscillation test according to claim 1, wherein the cylindrical ring presses the clamping sleeve under the pre-tightening force of the flange, so that the clamping sleeve is deformed and the cable is pressed.
4. The device for sealing the temperature measurement lead wire for the thermal oscillation test according to claim 1, wherein the ferrule is divided into two halves along the axial direction, and the two halves are separately taken out during the threading and the wire taking process, and deform under extrusion to press the cable to play a sealing role.
5. The apparatus of claim 1, wherein the cable is a thermocouple signal wire having a diameter of 2mm and a number of 10.
6. The apparatus of claim 1, wherein the upper flange opening is 15.5mm minimum.
7. The apparatus of claim 1, wherein the lower flange is mounted on the vessel by a reducing and connecting pipe, and the minimum opening is 15.5 mm.
8. The apparatus for sealing a thermal oscillation test temperature measurement lead wire according to claim 1, wherein the apparatus is sealed by the steps of:
step 1, leading out a lead wire from equipment after a thermocouple is arranged at a position of a measuring point;
step 2, loosening the fastening piece by using a wrench, taking down the fastening piece, then taking down the upper flange, separately taking down the sheath, the cylindrical ring and separately taking down the clamping sleeve;
step 3, sequentially penetrating each plug lead through the lower flange, and respectively installing the clamping sleeve and the cylindrical ring to ensure that the lead is placed in the clamping sleeve lead groove and prevent the lead from being crushed in the fastening piece pressing process;
step 4, placing an upper flange and installing a fastener;
step 5, installing a sheath, and adjusting the length of the wire to a proper position;
and 6, uniformly locking the fastening piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010088486.4A CN111326268B (en) | 2020-02-12 | 2020-02-12 | Device for sealing temperature measurement lead in thermal oscillation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010088486.4A CN111326268B (en) | 2020-02-12 | 2020-02-12 | Device for sealing temperature measurement lead in thermal oscillation test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111326268A true CN111326268A (en) | 2020-06-23 |
| CN111326268B CN111326268B (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010088486.4A Active CN111326268B (en) | 2020-02-12 | 2020-02-12 | Device for sealing temperature measurement lead in thermal oscillation test |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808347A (en) * | 2014-02-28 | 2014-05-21 | 广州中国科学院先进技术研究所 | Sealing device and method of lead of sealing metal case |
| CN203657793U (en) * | 2013-11-21 | 2014-06-18 | 广州中国科学院工业技术研究院 | Novel lead sealing device |
| CN204879080U (en) * | 2015-08-04 | 2015-12-16 | 深圳市开天源自动化工程有限公司 | With seal structure of glass seal of tube on stereoplasm container |
| RU170423U1 (en) * | 2016-12-15 | 2017-04-24 | Закрытое акционерное общество "Производственное объединение "Спецавтоматика" | SEALING UNIT |
| CN207514399U (en) * | 2017-12-08 | 2018-06-19 | 中国核动力研究设计院 | A kind of Pressure of Ambient Temperature container multichannel sensor lead sealing equipment |
-
2020
- 2020-02-12 CN CN202010088486.4A patent/CN111326268B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203657793U (en) * | 2013-11-21 | 2014-06-18 | 广州中国科学院工业技术研究院 | Novel lead sealing device |
| CN103808347A (en) * | 2014-02-28 | 2014-05-21 | 广州中国科学院先进技术研究所 | Sealing device and method of lead of sealing metal case |
| CN204879080U (en) * | 2015-08-04 | 2015-12-16 | 深圳市开天源自动化工程有限公司 | With seal structure of glass seal of tube on stereoplasm container |
| RU170423U1 (en) * | 2016-12-15 | 2017-04-24 | Закрытое акционерное общество "Производственное объединение "Спецавтоматика" | SEALING UNIT |
| CN207514399U (en) * | 2017-12-08 | 2018-06-19 | 中国核动力研究设计院 | A kind of Pressure of Ambient Temperature container multichannel sensor lead sealing equipment |
Non-Patent Citations (1)
| Title |
|---|
| 曹琼: "核反应堆堆芯上腔室冷却剂三维温度振荡现象研究", 《中国博士学位论文全文数据库 (工程科技Ⅱ辑)》 * |
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| Publication number | Publication date |
|---|---|
| CN111326268B (en) | 2021-10-29 |
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