CN112489837B - Sheet distributing device and method for in-service inspection of claw gaskets of control rod driving mechanism - Google Patents
Sheet distributing device and method for in-service inspection of claw gaskets of control rod driving mechanism Download PDFInfo
- Publication number
- CN112489837B CN112489837B CN202011361745.2A CN202011361745A CN112489837B CN 112489837 B CN112489837 B CN 112489837B CN 202011361745 A CN202011361745 A CN 202011361745A CN 112489837 B CN112489837 B CN 112489837B
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- China
- Prior art keywords
- shielding
- positioning
- inner sleeve
- sleeve component
- rope
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- 238000007689 inspection Methods 0.000 title claims abstract description 14
- 210000000078 claw Anatomy 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- 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
-
- 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 discloses a sheet distribution device and a sheet distribution method for in-service inspection of a claw gasket of a control rod driving mechanism, wherein the sheet distribution device comprises an inner sleeve component, a through accommodating cavity is formed in the inner sleeve component, a plurality of positioning steps for installing a film are arranged on the peripheral surface of the inner sleeve component, shielding barrels which are respectively hung on the periphery of the inner sleeve component and respectively correspond to the positioning steps, a connecting rope for connecting the shielding barrels and the inner sleeve component, one end of the connecting rope, which is connected with the inner sleeve component, is positioned above the corresponding shielding barrel, and when a plurality of shielding barrels are arranged, the outer diameter of the shielding barrel positioned above is smaller than the inner diameter of the shielding barrel positioned below in the adjacent two shielding barrels. The problem that personnel in a narrow space cannot enter the cloth piece is solved, and the field flaw detection requirement is met; the parts are few, and the back screen anti-drop design meets the field foreign matter prevention requirement; two films can be positioned rapidly and accurately, and concentricity is high; better guiding, stable lifting process and no damage to the workpiece.
Description
Technical Field
The invention belongs to the field of nuclear power detection equipment, and particularly relates to a piece distribution device and method for in-service inspection of a claw gasket of a control rod driving mechanism.
Background
In the nuclear power generation EPR pile type, gasket designs exist at two ends of part of pin shafts of a movable hook component and a fixed hook component of a control rod driving mechanism, and whether gaskets exist or not is determined through radiographic inspection during in-service inspection. The claw components are all positioned inside the pressure-resistant shell of the control rod driving mechanism, the upper 3 movable claw components are uniformly distributed in the circumferential direction, and the lower 3 fixed claw components are uniformly distributed in the circumferential direction. In order to ensure imaging effect, the ray method adopts a process of central exposure, and a film and a back screen are required to be arranged at the periphery of the pressure-resistant shell, but because the control rod guide cylinder is not detached from the top cover during in-service inspection, the space is narrow, the radiation dosage rate is high, personnel are difficult to enter, a film distribution device is required to be designed, the installation and the positioning of the film and the back screen are realized, and foreign matters cannot be generated in the operation process.
Disclosure of Invention
The invention aims to provide a piece distribution device for in-service inspection of a claw gasket of a control rod driving mechanism, solves the problem that personnel in a narrow space cannot enter a piece distribution, and meets the field flaw detection requirement.
In order to solve the technical problems, the invention adopts the following technical scheme: a cloth piece device for control rod actuating mechanism knuckle gasket is in-service inspection, it includes interior sleeve pipe subassembly, interior sleeve pipe subassembly's inside forms the accommodation chamber that link up, is equipped with a plurality of location step that is used for installing the film on its global, the device still including hang respectively locate interior sleeve pipe subassembly periphery and with each the shielding section of thick bamboo that the location step corresponds respectively, be used for connecting shielding section of thick bamboo with interior sleeve pipe subassembly's connection rope, connection rope with interior sleeve pipe subassembly connected one end is located the top of shielding section of thick bamboo rather than corresponding, works as in the shielding section of thick bamboo has a plurality of, in two adjacent shielding section of thick bamboo, the external diameter of the shielding section of thick bamboo that is located the top is less than the internal diameter of the shielding section of thick bamboo that is located the below.
Preferably, the inner sleeve assembly comprises a positioning cover, a lining arranged on the inner side of the upper end part of the positioning cover and a framework connected to the lower end part of the positioning cover, the positioning step is positioned on the outer peripheral surface of the framework, and the upper end part of the connecting rope is fixedly connected with the positioning cover.
Further, the two positioning steps are a first positioning step and a second positioning step positioned below the first positioning step respectively, the shielding barrels are an upper shielding barrel corresponding to the first positioning step and a lower shielding barrel corresponding to the second positioning step respectively, the connecting rope comprises a first rope connected between the upper shielding barrel and the positioning cover, a second rope connected between the lower shielding barrel and the positioning cover, and a third rope connected between the positioning cover and the lower end part of the framework, the first rope and the second rope are at least two, and are uniformly distributed around the upper shielding barrel and around the lower shielding barrel respectively, and the third rope is fixedly connected with the lower end part of the framework after bypassing the outer sides of the upper shielding barrel and the lower shielding barrel from top to bottom.
Further, the inner sleeve component is provided with a hanging ring.
The invention also provides a method for carrying out sheet distribution based on the device, which comprises the following steps:
a. lifting the shielding cylinder at the required detection position to expose the positioning step corresponding to the shielding cylinder;
b. surrounding the lower part of the hidden bag with the film around the positioning step and pasting the two overlapped ends of the hidden bag;
c. resetting the lifted shielding cylinder;
d. sleeving the installed cloth piece device on a control rod driving mechanism to be detected from above until the lower end surface of the framework is contacted with the control rod driving mechanism;
e. then exposing, and lifting the device after the exposure is finished; repeating the steps to finish the exposure of other exposure points.
The invention has the beneficial effects that: the problem that personnel in a narrow space cannot enter the cloth piece is solved, and the field flaw detection requirement is met; the parts are few, and the back screen anti-drop design meets the field foreign matter prevention requirement; two films can be positioned rapidly and accurately, and concentricity is high; better guiding, stable lifting process and no damage to the workpiece.
Drawings
FIG. 1 is a perspective view of the device of the present invention;
FIG. 2 is a cross-sectional view of the device of the present invention;
FIG. 3 is an enlarged view at A of FIG. 2;
fig. 4 is an enlarged view at B of fig. 2.
Detailed Description
The invention is described in detail below with reference to the embodiments shown in the drawings:
as shown in fig. 1-2, the sheet distributing device for in-service inspection of the hook claw gasket of the control rod driving mechanism comprises an inner sleeve component, a through accommodating cavity is formed in the inner sleeve component, a plurality of positioning steps for installing a film are arranged on the peripheral surface of the inner sleeve component, shielding barrels respectively hung on the periphery of the inner sleeve component and respectively corresponding to the positioning steps, and a connecting rope for connecting the shielding barrels and the inner sleeve component, wherein one end of the connecting rope connected with the inner sleeve component is positioned above the corresponding shielding barrel, and when a plurality of shielding barrels are arranged, the outer diameter of the shielding barrel positioned above is smaller than the inner diameter of the shielding barrel positioned below in two adjacent shielding barrels.
The inner sleeve assembly comprises a positioning cover 1, a lining 2 arranged on the inner side of the upper end part of the positioning cover 1 and a framework 3 connected to the lower end part of the positioning cover 1, wherein the positioning step is positioned on the outer peripheral surface of the framework 3, and the upper end part of the connecting rope is fixedly connected with the positioning cover 1.
The two positioning steps are respectively a first positioning step 4 and a second positioning step 5 positioned below the first positioning step 4, the first positioning step 4 and the second positioning step 5 respectively correspond to a first installation area 41 and a second installation area 51, the shielding barrels are respectively an upper shielding barrel 6 corresponding to the first positioning step 4 and a lower shielding barrel 7 corresponding to the second positioning step 5, the connecting rope comprises a first rope 8 connected between the upper shielding barrel 6 and the positioning cover 1, a second rope 9 connected between the lower shielding barrel 7 and the positioning cover 1, and a third rope 10 connected between the positioning cover 1 and the lower end part of the framework 3, the first rope 8 and the second rope 9 are respectively and uniformly distributed around the upper shielding barrel 6 and around the lower shielding barrel 7, and the third rope 10 is fixedly connected with the lower end part of the framework 3 after being wound from the outer sides of the upper shielding barrel 6 and the lower shielding barrel 7 from top to bottom. And the inner sleeve component is provided with a hanging ring.
In this embodiment: the lining 2 is arranged on the upper part of the positioning cover 1 through interference fit, the positioning cover 1 is fixed on the framework 3 through threads on the side surface, the upper shielding cylinder 6 is sleeved from the bottom of the framework 3, two ends of the first rope 8 with the length of 1.5mm are respectively fixed on the positioning cover 1 and the hanging hole of the upper shielding cylinder 6 through aluminum sleeves, and the length of the first rope 8 after installation is just enough that the lower edge of the upper shielding cylinder 6 is flush with the lower edge of the first installation area 41. The lower shielding cylinder 7 is sleeved from the bottom of the framework 3, two ends of a second rope 9 with the length of 1.5mm are respectively fixed on the positioning cover 1 and the hanging hole of the lower shielding cylinder 7 by using aluminum sleeves, and the length of the second rope 9 after installation enables the lower edge of the lower shielding cylinder 7 to be 5mm above the lower edge of the second installation area 51. The third rope 10 is arranged in the positioning cover 1 and the installation hole at the lower end of the framework 3, a certain margin is reserved, and the third rope is connected with the bottom of the framework 3 after being wound from the outer sides of the upper shielding cylinder 6 and the lower shielding cylinder 7, so that the film and the upper shielding cylinder 7 are prevented from falling. 4 hanging rings 11 are mounted to the positioning cover 1, two adjacent hanging rings are connected together by using a short steel wire rope, then the two remaining hanging rings are connected together by using a thick rope in the middle of the steel wire rope, and then the other thick rope is connected in the middle of the steel wire rope. The connecting ropes are made of steel wire ropes.
The method for carrying out the sheet distribution based on the device comprises the following steps:
a. lifting the shielding cylinder at the required detection position to expose the positioning step corresponding to the shielding cylinder;
b. surrounding the lower part of the hidden bag with the film around the positioning step and pasting the two overlapped ends of the hidden bag;
c. resetting the lifted shielding cylinder;
d. sleeving the installed cloth piece device on a control rod driving mechanism to be detected from above until the lower end surface of the framework is contacted with the control rod driving mechanism; e. then exposing, and lifting the device after the exposure is finished; repeating the steps to finish the exposure of other exposure points.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (5)
1. A cloth piece device for controlling inspection in service of stick actuating mechanism claw gasket, its characterized in that: the device comprises an inner sleeve component, a through accommodating cavity is formed in the inner sleeve component, a plurality of positioning steps for installing films are arranged on the peripheral surface of the inner sleeve component, the device further comprises shielding barrels which are respectively hung on the periphery of the inner sleeve component and respectively correspond to the positioning steps, a connecting rope used for connecting the shielding barrels with the inner sleeve component, a first positioning step and a second positioning step respectively correspond to a first installation area and a second installation area, one end, connected with the inner sleeve component, of the connecting rope is located above the corresponding shielding barrels, when the number of the shielding barrels is multiple, the outer diameter of the shielding barrel located above is smaller than the inner diameter of the shielding barrel located below, the number of the positioning steps is two, the first positioning steps and the second positioning steps are respectively the first positioning steps, and the second positioning steps are respectively the upper shielding barrel corresponding to the first positioning steps and the lower shielding barrel corresponding to the second positioning steps.
2. The sheet feeding device for in-service inspection of a hook pad of a control rod driving mechanism according to claim 1, wherein: the inner sleeve assembly comprises a positioning cover, a lining arranged on the inner side of the upper end part of the positioning cover and a framework connected to the lower end part of the positioning cover, the positioning step is positioned on the outer peripheral surface of the framework, and the upper end part of the connecting rope is fixedly connected with the positioning cover.
3. The sheet feeding device for in-service inspection of a hook pad of a control rod driving mechanism according to claim 2, wherein: the connecting ropes comprise a first rope connected between the upper shielding cylinder and the positioning cover, a second rope connected between the lower shielding cylinder and the positioning cover, and a third rope connected between the positioning cover and the lower end part of the framework, wherein at least two first ropes and at least two second ropes are uniformly distributed around the upper shielding cylinder and around the lower shielding cylinder respectively, and the third rope is fixedly connected with the lower end part of the framework after bypassing the outer sides of the upper shielding cylinder and the lower shielding cylinder from top to bottom.
4. The sheet feeding device for in-service inspection of a hook pad of a control rod driving mechanism according to claim 2, wherein: and the inner sleeve component is provided with a hanging ring.
5. A method of making a sheet using the apparatus of any one of claims 1-4, comprising the steps of:
a. lifting the shielding cylinder at the required detection position to expose the positioning step corresponding to the shielding cylinder;
b. surrounding the lower part of the hidden bag with the film around the positioning step and pasting the two overlapped ends of the hidden bag;
c. resetting the lifted shielding cylinder;
d. sleeving the installed cloth piece device on a control rod driving mechanism to be detected from above until the lower end surface of the framework is contacted with the control rod driving mechanism;
e. then exposing, and lifting the device after the exposure is finished; repeating the steps to finish the exposure of other exposure points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011361745.2A CN112489837B (en) | 2020-11-27 | 2020-11-27 | Sheet distributing device and method for in-service inspection of claw gaskets of control rod driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011361745.2A CN112489837B (en) | 2020-11-27 | 2020-11-27 | Sheet distributing device and method for in-service inspection of claw gaskets of control rod driving mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112489837A CN112489837A (en) | 2021-03-12 |
| CN112489837B true CN112489837B (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011361745.2A Active CN112489837B (en) | 2020-11-27 | 2020-11-27 | Sheet distributing device and method for in-service inspection of claw gaskets of control rod driving mechanism |
Country Status (1)
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