CN114724736A - Automatic overturning and positioning mechanism of pressure container inspection device - Google Patents
Automatic overturning and positioning mechanism of pressure container inspection device Download PDFInfo
- Publication number
- CN114724736A CN114724736A CN202011526458.2A CN202011526458A CN114724736A CN 114724736 A CN114724736 A CN 114724736A CN 202011526458 A CN202011526458 A CN 202011526458A CN 114724736 A CN114724736 A CN 114724736A
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- overturning
- positioning mechanism
- inspection device
- positioning
- main body
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- 230000007246 mechanism Effects 0.000 title claims abstract description 67
- 238000007689 inspection Methods 0.000 title claims abstract description 55
- 238000005096 rolling process Methods 0.000 claims description 28
- 239000007779 soft material Substances 0.000 claims description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007306 turnover Effects 0.000 description 14
- 238000009434 installation Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/003—Remote inspection of vessels, e.g. pressure vessels
-
- 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 an automatic overturning and positioning mechanism of a pressure container inspection device, which comprises an automatic overturning and positioning mechanism A and an automatic overturning and positioning mechanism B. The number of the automatic overturning positioning mechanisms A is at least one, and the number of the automatic overturning positioning mechanisms B is at least two. The beneficial effects are that: 1) and (4) an inspection device positioning mode based on the guide post characteristics. The accurate and rapid positioning of the pressure container inspection device is realized; 2) automatic overturning and positioning mode of the inspection device based on flange surface characteristics. The inspection device can be accurately and quickly positioned by using the characteristics of the flange surface under the condition that no guide post exists, and is suitable for various nuclear reaction pressure vessel reactor types; 3) and the automatic overturning positioning mechanism is distributed in the circumferential direction. The plurality of automatic overturning and positioning mechanisms axially arranged along the flange surface of the pressure container are utilized to realize the concentricity of the central axis of the inspection device and the central axis of the pressure container, and the positioning and mounting precision is improved.
Description
Technical Field
The invention belongs to the technical field of nondestructive testing of pressure vessels, and particularly relates to an automatic overturning and positioning mechanism of a pressure vessel inspection device.
Background
The reactor pressure vessel is a closed vessel, also called reactor pressure shell, which houses the nuclear reactor and bears its great operating pressure, and is a key device in a pressurized water reactor nuclear power plant. The nuclear reactor pressure vessel needs to be periodically checked by using a checking device to confirm the structural integrity of the nuclear reactor pressure vessel and ensure that the radioactive substances are always in a controllable state. The installation and positioning of the nuclear reactor pressure vessel inspection device are related to the detection accuracy and the installation stability of the inspection device, and the surface of the pressure vessel cannot be damaged by the installation of equipment. An automatic positioning mechanism of a nuclear reactor pressure vessel detection device needs to be designed, so that the precise positioning and the rapid installation of the detection device are realized under the condition that a guarantee part damages the surface of the pressure vessel.
Disclosure of Invention
The invention aims to provide an automatic overturning and positioning mechanism of a pressure vessel inspection device, which can realize accurate and rapid positioning of the pressure vessel inspection device on a flange surface by utilizing the structural characteristics of the flange surface of a nuclear reactor pressure vessel, and realize stable installation and accurate positioning of pressure vessel inspection equipment.
The technical scheme of the invention is as follows: an automatic overturning and positioning mechanism of a pressure container inspection device comprises an automatic overturning and positioning mechanism A and an automatic overturning and positioning mechanism B.
The number of the automatic overturning positioning mechanisms A is at least one, and the number of the automatic overturning positioning mechanisms B is at least two.
The automatic overturning and positioning mechanism A comprises a supporting main body, a spring, a rotating shaft, an overturning body, vertical cushion blocks, a guide part, a guide block, a connecting shaft, rolling wheels and support cushion blocks, wherein the supporting main body is provided with a circular guide positioning hole, the support cushion blocks are arranged around the circular guide positioning hole below the supporting main body, the guide part is arranged at the other side of the circular guide positioning hole of the supporting main body, the guide block is fixed on the guide part, the overturning body is close to the side of the circular guide positioning hole of the supporting main body, the two rolling wheels are symmetrically arranged on the overturning body through the two connecting shafts, the two vertical cushion blocks are arranged on a cross rod at the other side of the overturning body, the overturning body and the supporting main body are connected through the springs and the rotating shafts which are distributed at the two sides, the rotating shafts are fixed on the supporting main body in a threaded mode, the overturning body can rotate around the rotating shafts at the two sides of the supporting main body, one end of each spring is fixed on the supporting main body, one end of the spring is fixed on the turnover body.
The automatic overturning and positioning mechanism B comprises a supporting main body, a spring, a rotating shaft, an overturning body, vertical cushion blocks, connecting shafts, rolling wheels and support cushion blocks, wherein circular guide positioning holes are formed in the supporting main body, the support cushion blocks are installed around the circular guide positioning holes below the supporting main body, the overturning body is close to the circular guide positioning holes of the supporting main body, the two rolling wheels are symmetrically installed on the overturning body through the two connecting shafts, the two vertical cushion blocks are installed on a cross rod at the other side of the overturning body, the overturning body is connected with the supporting main body through the springs and the rotating shafts which are distributed on two sides, the rotating shaft is fixed on the supporting main body in a threaded mode, one end of each spring is fixed on the supporting main body, and the other end of each spring is fixed on the overturning body.
The automatic overturning and positioning mechanism A is of a symmetrical structure.
The automatic overturning and positioning mechanism B is of a symmetrical structure.
The supporting cushion block is made of soft materials, and the vertical cushion block is made of soft materials.
The guide block is made of soft materials.
The invention has the beneficial effects that: 1) and (4) an inspection device positioning mode based on the guide post characteristics. The accurate and rapid positioning of the pressure container inspection device is realized; 2) automatic overturning and positioning mode of the inspection device based on flange surface characteristics. The inspection device can be accurately and quickly positioned by using the characteristics of the flange surface under the condition that no guide post exists, and is suitable for various nuclear reaction pressure vessel reactor types; 3) and the automatic overturning positioning mechanism is distributed in the circumferential direction. The central axis of the inspection device and the central axis of the pressure container can be concentric by utilizing a plurality of automatic overturning positioning mechanisms axially arranged along the flange surface of the pressure container, so that the positioning and mounting precision is improved; 4) the automatic overturning positioning mechanism and the multi-matching surface of the pressure container are made of soft materials, and the inspection device is not damaged on the premise of ensuring accurate positioning of the inspection device.
Drawings
FIG. 1 is a cross-sectional view of a flange face of a nuclear reactor pressure vessel;
FIG. 2 is a top view of a flange face of a nuclear reactor pressure vessel;
FIG. 3 is a schematic view of an automatic turning positioning mechanism of the pressure vessel inspection device according to the present invention;
FIG. 4 is a first structural view of an automatic turning positioning mechanism A;
FIG. 5 is a second structural view of an automatic turning positioning mechanism A;
FIG. 6 is a first structural view of an automatic turning positioning mechanism B;
fig. 7 is a second structure view of the automatic reverse positioning mechanism B.
In the figure: 1 pressure vessel flange face, 2 guide posts, 3 automatic upset positioning mechanism A, 4 automatic upset positioning mechanism B, 5 support main parts, 6 springs, 7 axis of rotation, 8 upset bodies, 9 vertical cushion blocks, 10 guide pieces, 11 guide blocks, 12 connecting shafts, 13 rolling wheels, 14 support cushion blocks, 15 threaded holes, 16 upper support keyways.
Detailed Description
The invention is further described in detail below with reference to the drawings and specific embodiments.
The invention provides an automatic overturning and positioning mechanism of a pressure container inspection device, which has the following characteristics:
(1) and (4) an inspection device positioning mode based on the guide post characteristics. The guide post installed on the flange surface according to a specific angle is matched with the circular guide positioning hole on the positioning mechanism, so that the inspection device is quickly positioned and fixed on the flange surface of the nuclear reactor pressure vessel.
(2) Automatic overturning and positioning mode of the inspection device based on flange surface characteristics. Under the condition that the guide post is not installed on the flange surface of the pressure vessel, the accurate and quick positioning and installation of the inspection device are realized through the key groove supporting characteristic of the upper part of the pressure vessel and the overturning hinge structure.
(3) And the automatic overturning positioning mechanism is distributed in the circumferential direction. The plurality of automatic overturning and positioning mechanisms axially arranged along the flange surface of the pressure container are utilized to realize the concentricity of the central axis of the inspection device and the central axis of the pressure container, and the positioning and mounting precision is improved.
(4) The automatic turning positioning mechanism and the pressure container have multiple matching surfaces. All contact surfaces of the supporting surface and the vertical binding surface which are equal to the pressure container through the rollers are made of soft materials, so that the pressure container is protected from being damaged in the installation and positioning process of the inspection device while the positioning is ensured to be accurate and quick.
As shown in fig. 3, the automatic turning positioning mechanism of the pressure container inspection device comprises an automatic turning positioning mechanism a3 and an automatic turning positioning mechanism B4. The inspection device positioning mechanism can be arranged on an inspection device according to the circumferential direction of a specific angle by an automatic overturning positioning mechanism A3 and two automatic overturning positioning mechanisms B4, or can be arranged on an inspection device according to the circumferential direction of a specific angle by an automatic overturning positioning mechanism A3 and three (a plurality of) automatic overturning positioning mechanisms B4, and the automatic overturning positioning mechanism A and the automatic overturning positioning mechanism B are supported on the flange surface 1 of the nuclear reactor pressure vessel.
As shown in fig. 4 and 5, the automatic turnover positioning mechanism A3 includes a support main body 5, a spring 6, a rotation shaft 7, a turnover body 8, a vertical pad 9, a guide member 10, a guide block 11, a connecting shaft 12, a rolling wheel 13 and a support pad 14, and the automatic turnover positioning mechanism A3 is of a symmetrical structure. The support main body 5 is fixedly connected with the inspection device through screws, a circular guide positioning hole is formed in the support main body 5 and can penetrate through a guide post 2 installed in a threaded hole in the flange face 1 of the nuclear reactor pressure vessel, and layout positioning and fixing through the guide post 2 are achieved. And supporting cushion blocks 14 are arranged around the circular guide positioning holes below the supporting main body 5, and the supporting cushion blocks 14 are made of soft materials and supported on the flange surface 1 of the nuclear reactor pressure vessel to prevent the flange surface from being damaged. A guide piece 10 is installed on the other side of the circular guide positioning hole of the support main body 5, a guide block 11 made of soft materials is fixed on the guide piece 10, and the guide piece 10 on the support main body 5 is matched with an upper support key groove 16 on the flange surface 1 of the nuclear reactor pressure vessel to realize the positioning of the support main body 5 on the flange surface of the pressure vessel. The turning body 8 is close to the side of the circular guide positioning hole of the support body 5, and two rolling wheels 13 are symmetrically arranged on the turning body 8 through two connecting shafts 12. The rolling wheel 13 is rotatable about the connecting shaft 12. Two vertical cushion blocks 9 are installed on the cross bar on the other side of the turnover body 8, the vertical cushion blocks 9 are made of soft materials, and the vertical cushion blocks 9 are in contact fit with the inner wall of the pressure container. The turning body 8 is connected with the supporting body 5 through the springs 6 and the rotating shafts 7 distributed on two sides, the rotating shafts 7 are fixed on the supporting body 5 in a threaded mode, the turning body 8 can rotate around the rotating shafts 7 on two sides of the supporting body 5, one end of each spring 6 is fixed on the supporting body 5, one end of each spring is fixed on the turning body 8, and when the turning body 8 rotates around the rotating shafts 7 on two sides of the supporting body 5, the springs 6 can be stretched or reset. When the inspection device is positioned and installed. Because of the action of the tension of the spring 6, the lower end points of the two rolling wheels 13 on the turnover body 8 are lower than the lower end surface of the supporting cushion block 14 on the supporting body 5, the guide piece 10 on the supporting body 5 is matched with the upper supporting key groove 16 on the flange surface 1 of the nuclear reactor pressure vessel in the matching process, the two rolling wheels 13 on the turnover body 8 are in contact with the flange surface, after the two rolling wheels are in contact, the inspection device is in the falling installation process, the turnover body 8 rotates around the rotating shaft 7, the two rolling wheels 13 on the turnover body 8 move towards the outer side direction of the flange surface, and the two vertical cushion blocks 9 on the cross bar on the other side of the turnover body 8 are gradually in contact and fit with the inner wall of the pressure vessel.
The automatic overturning positioning mechanism B4 comprises a supporting main body 5, a spring 6, a rotating shaft 7, an overturning body 8, a vertical cushion block 9, a connecting shaft 12, a rolling wheel 13 and a supporting cushion block 14, and the automatic overturning positioning mechanism B4 is of a symmetrical structure. The support main body 5 is fixedly connected with the inspection device through screws, a circular guide positioning hole is formed in the support main body 5 and can penetrate through a guide post 2 installed in a thread space on a flange face 1 of the nuclear reactor pressure vessel, and layout positioning and fixing through the guide post 2 are achieved. And supporting cushion blocks 14 are arranged around the circular guiding positioning holes below the supporting main body 5, and the supporting cushion blocks 14 are made of soft materials and supported on the flange surface 1 of the nuclear reactor pressure vessel to prevent the flange surface from being damaged. The turning body 8 is close to the circular guide positioning hole side of the supporting body 5, and two rolling wheels 13 are symmetrically arranged on the turning body 8 through two connecting shafts 12. The rolling wheel 13 is rotatable about the connecting shaft 12. Two vertical cushion blocks 9 are installed on the cross bar on the other side of the turnover body 8, the vertical cushion blocks 9 are made of soft materials, and the vertical cushion blocks 9 are in contact fit with the inner wall of the pressure container. The turning body 8 is connected with the supporting body 5 through the springs 6 and the rotating shafts 7 distributed on two sides, the rotating shafts 7 are fixed on the supporting body 5 in a threaded mode, the turning body 8 can rotate around the rotating shafts 7 on two sides of the supporting body 5, one end of each spring 6 is fixed on the supporting body 5, one end of each spring is fixed on the turning body 8, and when the turning body 8 rotates around the rotating shafts 7 on two sides of the supporting body 5, the springs 6 can be stretched or reset. When the inspection device is positioned and installed. Because 6 pulling force effects of spring for the lower extreme point of two rolling wheels 13 of 8 on the upset body is less than the lower terminal surface of supporting pad 14 on the supporting body 5, when inspection device whereabouts installation, two rolling wheels 13 on the upset body 8 contact with the flange face earlier, both contact the back, inspection device is in the installation of falling down, upset body 8 rotates round axis of rotation 7, two rolling wheels 13 on the upset body 8 move to flange face outside direction, two vertical pads 9 on the horizontal pole of 8 opposite sides of upset body contact the laminating gradually with the pressure vessel inner wall.
A standard guide post 2 of the nuclear power plant is utilized, or a shorter simulated guide post (shorter in size) is machined according to the size of the standard guide post 2. Before the equipment is installed, the guide columns 2 are installed on the flange surface of the nuclear reactor pressure vessel according to a specific angle. The inspection device is quickly positioned and fixed on the flange surface of the nuclear reactor pressure vessel through the matching of the circular guide positioning hole on the inspection device positioning mechanism.
When the inspection device falls down and is positioned above the flange surface of the pressure vessel in a state that the guide post is not arranged on the flange surface of the pressure vessel of the nuclear reactor. Because 6 pulling force effects of spring for the lower extreme point of two rolling wheels 13 of 8 on the upset body is less than the lower terminal surface of supporting pad 14 on the supporting body 5, two rolling wheels 13 on the upset body 8 contact with the flange face earlier, both after contacting, the inspection device is in the installation process that falls down, upset body 8 rotates round axis of rotation 7, two rolling wheels 13 on the upset body 8 move to flange face outside direction, spring 6 is stretched, two vertical pads 9 on 8 opposite side horizontal poles of upset body contact the laminating gradually with the pressure vessel inner wall.
When the inspection device is removed from the flange surface of the nuclear reactor pressure vessel. The inspection device is in the process of rising vertically away above the flange face of the pressure vessel. Due to the tensile force of the spring 6, the vertical cushion block 9 is gradually separated from the inner wall of the pressure container, the two rolling wheels 13 on the turnover body 8 move towards the inner side of the flange face, the two rolling wheels 13 on the turnover body 8 are gradually separated from the flange face, and the lower end points of the two rolling wheels 13 on the turnover body 8 automatically recover to be lower than the lower end face state of the supporting cushion block 14 on the supporting main body 5.
Claims (8)
1. The utility model provides an automatic positioning mechanism that overturns of pressure vessel inspection device which characterized in that: comprises an automatic overturning positioning mechanism A and an automatic overturning positioning mechanism B.
2. The automatic overturning and positioning mechanism for the pressure container inspection device according to claim 1, characterized in that: the number of the automatic overturning positioning mechanisms A is at least one, and the number of the automatic overturning positioning mechanisms B is at least two.
3. The automatic overturning and positioning mechanism for the pressure container inspection device according to claim 1, characterized in that: the automatic overturning and positioning mechanism A comprises a supporting main body, a spring, a rotating shaft, an overturning body, vertical cushion blocks, a guide part, a guide block, a connecting shaft, rolling wheels and support cushion blocks, wherein the supporting main body is provided with a circular guide positioning hole, the support cushion blocks are arranged around the circular guide positioning hole below the supporting main body, the guide part is arranged at the other side of the circular guide positioning hole of the supporting main body, the guide block is fixed on the guide part, the overturning body is close to the side of the circular guide positioning hole of the supporting main body, the two rolling wheels are symmetrically arranged on the overturning body through the two connecting shafts, the two vertical cushion blocks are arranged on a cross rod at the other side of the overturning body, the overturning body and the supporting main body are connected through the springs and the rotating shafts which are distributed at the two sides, the rotating shafts are fixed on the supporting main body in a threaded mode, the overturning body can rotate around the rotating shafts at the two sides of the supporting main body, one end of each spring is fixed on the supporting main body, one end of the turning body is fixed on the turning body.
4. The automatic overturning and positioning mechanism for the pressure container inspection device according to claim 1, characterized in that: the automatic overturning and positioning mechanism B comprises a supporting main body, a spring, a rotating shaft, an overturning body, vertical cushion blocks, connecting shafts, rolling wheels and support cushion blocks, wherein circular guide positioning holes are formed in the supporting main body, the support cushion blocks are installed around the circular guide positioning holes below the supporting main body, the overturning body is close to the circular guide positioning holes of the supporting main body, the two rolling wheels are symmetrically installed on the overturning body through the two connecting shafts, the two vertical cushion blocks are installed on a cross rod at the other side of the overturning body, the overturning body is connected with the supporting main body through the springs and the rotating shafts which are distributed on two sides, the rotating shaft is fixed on the supporting main body in a threaded mode, one end of each spring is fixed on the supporting main body, and the other end of each spring is fixed on the overturning body.
5. The automatic overturning and positioning mechanism for the pressure container inspection device according to claim 3, characterized in that: the automatic overturning and positioning mechanism A is of a symmetrical structure.
6. The automatic overturning and positioning mechanism for the pressure container inspection device according to claim 4, characterized in that: the automatic overturning and positioning mechanism B is of a symmetrical structure.
7. An automatic overturning and positioning mechanism for a pressure container inspection device according to claim 3 or 4, characterized in that: the supporting cushion block is made of soft materials, and the vertical cushion block is made of soft materials.
8. The automatic overturning and positioning mechanism for the pressure container inspection device according to claim 3, characterized in that: the guide block is made of soft materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526458.2A CN114724736A (en) | 2020-12-22 | 2020-12-22 | Automatic overturning and positioning mechanism of pressure container inspection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526458.2A CN114724736A (en) | 2020-12-22 | 2020-12-22 | Automatic overturning and positioning mechanism of pressure container inspection device |
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| Publication Number | Publication Date |
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| CN114724736A true CN114724736A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011526458.2A Pending CN114724736A (en) | 2020-12-22 | 2020-12-22 | Automatic overturning and positioning mechanism of pressure container inspection device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07209261A (en) * | 1994-01-19 | 1995-08-11 | Babcock Hitachi Kk | Inspection apparatus for pressure vessel in atomic reactor |
| JPH10319170A (en) * | 1997-05-16 | 1998-12-04 | Hitachi Ltd | In-reactor inspection device |
| CN101364451A (en) * | 2008-09-28 | 2009-02-11 | 苏州热工研究院有限公司 | Closed-circuit television inspection apparatus for top cover of reactor pressure vessel |
| JP2012122985A (en) * | 2010-11-17 | 2012-06-28 | Ihi Corp | Installation mechanism of ultrasonic test equipment |
| CN103871515A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Ultrasonic inspection tool for main pipeline of reactor pressure vessel |
| CN206572172U (en) * | 2016-09-30 | 2017-10-20 | 江苏核电有限公司 | The flange support meanss of reactor pressure vessel automatic checkout equipment |
-
2020
- 2020-12-22 CN CN202011526458.2A patent/CN114724736A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07209261A (en) * | 1994-01-19 | 1995-08-11 | Babcock Hitachi Kk | Inspection apparatus for pressure vessel in atomic reactor |
| JPH10319170A (en) * | 1997-05-16 | 1998-12-04 | Hitachi Ltd | In-reactor inspection device |
| CN101364451A (en) * | 2008-09-28 | 2009-02-11 | 苏州热工研究院有限公司 | Closed-circuit television inspection apparatus for top cover of reactor pressure vessel |
| JP2012122985A (en) * | 2010-11-17 | 2012-06-28 | Ihi Corp | Installation mechanism of ultrasonic test equipment |
| CN103871515A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Ultrasonic inspection tool for main pipeline of reactor pressure vessel |
| CN206572172U (en) * | 2016-09-30 | 2017-10-20 | 江苏核电有限公司 | The flange support meanss of reactor pressure vessel automatic checkout equipment |
Non-Patent Citations (1)
| Title |
|---|
| 王龙;王俊涛;张志义;张军;周文;: "核反应堆压力容器检查升降平台装置设计研究", 科技视界, no. 08, 15 March 2018 (2018-03-15) * |
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