CN115218172A - Rotary buckle type gutter channel plugging device and method for steam generator - Google Patents
Rotary buckle type gutter channel plugging device and method for steam generator Download PDFInfo
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- CN115218172A CN115218172A CN202210607862.5A CN202210607862A CN115218172A CN 115218172 A CN115218172 A CN 115218172A CN 202210607862 A CN202210607862 A CN 202210607862A CN 115218172 A CN115218172 A CN 115218172A
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- clamping shaft
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 65
- 230000008859 change Effects 0.000 claims abstract description 3
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000011111 cardboard Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a rotary buckle type gutter channel plugging device and method for a steam generator, and relates to the technical field of steam generators, wherein the rotary buckle type gutter channel plugging device comprises a clamping shaft and a pressing sleeve, one end of the clamping shaft is connected with a clamping plate, the other end of the clamping shaft penetrates through the pressing sleeve, and a spring which is abutted to the pressing sleeve is sleeved on the outer side of the clamping shaft; the two sides of the clamping shaft are symmetrically provided with convex parts, the outer surface of the pressing sleeve is provided with a male groove, the inner surface of the pressing sleeve is provided with a female groove which forms a set angle with the male groove, and the two sides of the pressing sleeve are provided with extension parts; the convex part is positioned in the male groove to be in a first state, the convex part is positioned in the female groove to be in a second state, and the clamping shaft is rotated to change the clamping shaft from the first state to the second state so that the clamping plate is matched with the outward extending part of the pressing sleeve to block the drainage channel. The invention can be firmly arranged in the flow trough area of the top supporting plate, effectively reduces the local flow velocity of the area during the operation of the steam generator, reserves the internal channel of the secondary side in-service inspection of the steam generator, and improves the safety and reliability of the partially finished or operated steam generator.
Description
Technical Field
The invention relates to the technical field of steam generators, in particular to a rotary buckle type water flowing groove plugging device and method for a steam generator.
Background
The steam generator heat transfer tube bundle support plate is a key component for increasing the support rigidity of the heat transfer tube bundle and improving the resistance of the heat transfer tube bundle to flow-induced vibration. Depending on the structure and arrangement of the steam generator heat transfer tube bundle, a number of support plates are generally provided at an axial height such that the unsupported span meets the design requirements. Generally, the tube bundle support plate can be divided into a middle support plate and a top support plate, the difference between which is that the flow channel structure of the elbow gallery area of the U-shaped heat transfer tubes is different.
In order to make the top flow field of the heat transfer tube bundle tend to be uniform, a plurality of small round holes are arranged in the tube gallery area of the top supporting plate to serve as drain holes, a plurality of square grooves are arranged to serve as drain grooves, and the function of in-service inspection channels is taken into consideration. However, since the flow resistance of the tube gallery area is smaller than that of the tube passing area, the local flow velocity of the fluid on the secondary side (shell side) of the steam generator in the tube gallery area is larger, and particularly the flow velocity of the fluid in the square runner area is obviously increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a screwing type gutter channel plugging device and a screwing type gutter channel plugging method for a steam generator, which can be firmly installed in a gutter channel area of a top supporting plate, effectively reduce the local flow rate of the area during the operation of the steam generator, reserve an internal channel for the in-service inspection of the secondary side of the steam generator, and improve the safety and reliability of a partially completed or finished or operated steam generator.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the invention provides a steam generator rotary buckle type top support plate launder plugging device, which comprises a clamping shaft and a pressing sleeve, wherein one end of the clamping shaft is connected with a clamping plate, the other end of the clamping shaft penetrates through the pressing sleeve, and a spring abutted against the pressing sleeve is sleeved on the outer side of the clamping shaft;
the two sides of the clamping shaft are symmetrically provided with convex parts, the outer surface of the pressing sleeve is provided with a male groove, the inner surface of the pressing sleeve is provided with a female groove which forms a set angle with the male groove, and the two sides of the pressing sleeve are provided with extension parts; the convex part is positioned in the male groove to be in a first state, the convex part is positioned in the female groove to be in a second state, and the clamping shaft is rotated to change the clamping shaft from the first state to the second state so that the clamping plate is matched with the outward extending part of the pressing sleeve to block the drainage channel.
As a further implementation mode, a step-shaped cavity is arranged inside the pressing sleeve, and the size of the cavity is gradually reduced from one end close to the female slot to the other end.
As a further implementation mode, a first boss is arranged on the circumferential direction of the clamping shaft, a second boss is arranged in the cavity inside the pressing sleeve, the spring is arranged between the first boss and the second boss, and two ends of the spring are respectively embedded into the clamping groove of the first boss and the clamping groove of the second boss.
As a further implementation, the first boss diameter is smaller than both the first press sleeve compression space inner diameter and the boss length.
As a further implementation, the two male grooves and the two female grooves form a cross-shaped structure.
As a further implementation mode, the clamping plate is rectangular, and the extending direction of the two protrusions is consistent with the width direction of the clamping plate.
As a further implementation, the cross section of the pressing sleeve is circular.
As a further implementation mode, one surface of the pressing sleeve opposite to the surface where the male groove is located is provided with a plurality of circulation holes.
In a second aspect, an embodiment of the present invention further provides a method for using a steam generator screwing-type top support plate water flowing groove plugging device, including:
and inserting the plugging device into the launder, pressing the clamping shaft downwards to enable the bulge to pass through the male groove to the inner cavity of the pressing sleeve, rotating the clamping shaft by 90 degrees, releasing the clamping shaft, fixing the clamping plate and the pressing sleeve on the top supporting plate under the action of a spring, and enabling the bulge to enter the female groove.
As a further implementation, when the plugging device is removed, the clamping shaft is pressed downwards until the protruding part enters the cavity inside the pressing sleeve, the clamping shaft is rotated by 90 degrees in the reverse direction, and the device and the top support plate are separated from the upper surface after the protruding part passes through the male groove.
The invention has the following beneficial effects:
the device can be conveniently and firmly arranged in the flow groove area of the top supporting plate through the matching of the convex part of the clamping shaft, the female groove and the male groove of the pressing sleeve and the spring, and can be arranged and dismantled through pressing and rotating the clamping shaft, so that the disassembly and the assembly are convenient; the local flow velocity of the region in the operation period of the steam generator can be effectively reduced, an internal channel of secondary side in-service inspection of the steam generator is reserved, and the safety and reliability of the partially finished or operated steam generator are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a front view of a pipe gallery area according to one or more embodiments of the invention;
FIG. 2 is a schematic view of a chuck shaft rotated 90 according to one or more embodiments of the present invention;
FIG. 3 (a) is a first perspective view of a press sleeve according to one or more embodiments of the present disclosure;
FIG. 3 (b) is a second perspective view of a press sleeve according to one or more embodiments of the present invention;
FIG. 4 is a schematic view of a spindle to card connection according to one or more embodiments of the present invention;
FIG. 5 (a) is a first schematic view of the installation of the present invention with a top support plate according to one or more embodiments;
FIG. 5 (b) is a second schematic illustration of the installation of the present invention with a top support plate according to one or more embodiments.
The device comprises a clamping plate 1, a clamping plate 2, a clamping shaft 3, a protruding part 4, a spring 5, a pressing sleeve 6, a top supporting plate 7, a male groove 8, a rotating space 9, a female groove 10, an upper through hole 11, an outward extending part 12, a circulating hole 13, a first boss 14, a second boss 15, a first compression space 16, a second compression space 17 and a lower through hole.
Detailed Description
The first embodiment is as follows:
the embodiment provides a steam generator revolves knot formula top bearing plate tye plugging device, as shown in fig. 1 and 2, including card axle 2, cardboard 1, press cover 5 and spring 4, 2 one end of card axle is connected with cardboard 1 after passing in pressing cover 5, cardboard 1 is used for contacting with the tye bottom surface, 2 other ends of card axle extend to the 5 outsides of pressing cover, spring 4 locates the 2 outsides of card axle and is located the inside cavity of pressing cover 5, through pushing down, the state switching of rotatory calorie axle 2 realization device.
By taking the position of the installation state of the device as reference, the clamping plate 1 is positioned at the bottom of the clamping shaft 2, and the top end of the clamping shaft 2 extends out of the upper surface of the pressing sleeve 5.
Specifically, as shown in fig. 3 (a) and 3 (b), the pressing sleeve 5 is cylindrical as a whole, and a stepped cavity is formed inside the pressing sleeve 5 and is communicated through the upper through hole 10. A circular plate with a certain thickness is formed at the top of the pressing sleeve 5, and an upper through hole 10 is formed in the center of the circular plate; the cavity tapers from one side adjacent the circular plate to the other.
In the embodiment, the cross section of the cavity is round so as to be suitable for the clamping shaft 2 and be convenient for installing the spring 4; the diameter of the cavity is sequentially reduced from top to bottom to form a stepped structure, wherein the maximum diameter of the cavity is a rotating space 8 which is used for changing the direction of the boss 3 of the clamping shaft 2, and the first compression space 15 is used for axially moving the clamping shaft 2 and forms an axially moving space for the spring 4 together with the second compression space 16.
The through hole 17 is equipped with second boss 14 towards the inboard under the bottom of pressing cover 5, and second boss 14 has certain clearance with pressing cover 5 for fixed spring 4 one end. A first boss 13 is arranged on the shaft section of the clamping shaft 2 positioned in the rotating space 8, a clamping groove is arranged on one side of the first boss 13 corresponding to the second boss 14, and the other end of the spring 4 is fixed through the clamping groove; the first boss 13 and the second boss 14 cooperate to realize the limit of the spring 4.
The top of the clamping shaft 2 is provided with a hexagonal head for applying acting force. As shown in fig. 4, the clamping shaft 2 is of a diameter-variable structure, the diameter of one end of the clamping plate 1 is smaller than that of the other end of the clamping shaft, the first boss 13 and the protruding portion 3 are arranged on the section of the clamping shaft 2 with the larger diameter, and the transverse size of the protruding portion 3 is larger than that of the first boss 13.
The clamping shaft 2 is symmetrically provided with two convex parts 3 at two sides, and the two convex parts 3 are on the same horizontal plane and are vertical to the axis of the clamping shaft 2, so that a cross-shaped structure is formed. The boss 3 may be cylindrical, rectangular parallelepiped or other shape.
In the present embodiment, the first boss 13 and the second boss 14 have a circular cross section, and the diameter of the first boss 13 is smaller than the length of the boss 3.
As shown in fig. 3 (a), the upper surface of the pressing sleeve 5 is provided with a male groove 7, and the male groove 7 is communicated with the side surface of the upper through hole 10; the male slot 7 is adapted to the boss 3 to form a straight structure, and the male slot 7 is communicated with the rotating space 8.
The inner surface of the pressing sleeve 5 (the surface corresponding to the top of the rotating space 8) is provided with a female groove 9, and the female groove 9 is communicated with the rotating space 8 but does not penetrate through the upper surface of the pressing sleeve 5. In the present embodiment, the male groove 7 refers to a groove visible from the outside, and the female groove 9 refers to a groove hidden inside the sleeve 5.
The two female grooves 9 also form a straight structure, and the straight structure formed by the female grooves 9 and the male grooves 7 is vertical, namely the included angle is 90 degrees. With the bellying 3 be located male groove 7 and be the first state, the bellying 3 is located female groove 9 and is the second state, press down card axle 2 and make bellying 3 follow male groove 7 get into rotation space 8, loosen card axle 2 after rotatory 90, bellying 3 gets into female groove 9, realizes the state switching of card axle 2.
When the clamping shaft 2 is in the first state, the device can move relative to the water flowing groove of the top supporting plate 6, and when the clamping shaft 2 is in the second state, the clamping plate 1 is matched with the clamping shaft 2 to fix the device in the water flowing groove, so that the water flowing groove is blocked.
The overhanging parts 11 are symmetrically arranged outside the pressing sleeve 5, and the shape of the overhanging parts 11 can be set according to actual requirements, such as circular arc, rectangle, etc. As shown in fig. 3 (b), the bottom surface of the pressing sleeve 5 can be provided with a plurality of flow holes 12 according to actual requirements, and the flow holes 12 are communicated with the inner cavity of the pressing sleeve 5.
The clamping plate 1 is of a rectangular structure and is adaptive to the flow channel; the width direction of the card board 1 is consistent with the extending direction of the convex part 3.
As shown in fig. 5 (a) -5 (b), when the latch 2 is in the second state, the longitudinal direction of the latch 1 is perpendicular to the extending direction of the overhang 11, the widthwise direction of the floor surface at both ends of the longitudinal direction of the latch 1 abuts against, and the lengthwise direction of the overhang 11 abuts against the ceiling surface of the gutter, so that the gutter area firmly attached to the top support plate 6 is realized.
The clamping shaft of the embodiment is formed by turning a cylindrical bar into a profile, and the clamping groove of the first boss 13 is formed by machining; the boss 3 is welded to the chuck shaft 2 or machined. The clamping plate 1 is made of plates, one of the types of the plates, the bars and the forgings is selected to make a pressing sleeve 5, and a male groove 7, a female groove 9, a rotating space 8, a first compression space 15, a second compression space 16 and the like in the pressing sleeve 5 are machined. A standard compression spring is used and placed in a cavity formed by the first boss 13, the second boss 14, the first compression space 15 and the second compression space 16 of the pressing sleeve.
The embodiment utilizes the mode that the spring 4, the protruding part 3 of the clamping shaft 2 and the pressing sleeve 5 are fastened in a screwing mode to be conveniently installed on the top supporting plate 6 of the steam generator, can realize simple and easy removal, effectively reduces the local flow velocity of the area during the operation of the steam generator, simultaneously reserves the internal channel of the secondary side of the steam generator for in-service inspection, and improves the safety and reliability of the partially completed or finished or operated steam generator.
Different types and sizes of plugging devices can be designed according to the top supporting plate 6 and even the middle supporting plate water flow channel with different structures on different steam generators, and water flow holes with different sizes and numbers can be arranged on the plugging devices according to design requirements.
Example two:
the embodiment provides a using method of a steam generator screwing type top supporting plate launder plugging device, which comprises the following steps:
1. the occlusion device of the first embodiment is manufactured by the following process:
(1) The spring 4 is arranged in a second compression space 16 of the pressing sleeve 5, and the lower end of the spring is embedded into a clamping groove surrounded by a second boss 14 of the pressing sleeve 5;
(2) Inserting the clamping shaft 2 with the convex part 3 into the pressing sleeve 5, and embedding the upper end of the spring 4 into a clamping groove of a first boss 13 of the clamping shaft 2;
(3) The clamping shaft 2 penetrates through a lower through hole 17 of the pressing sleeve 5 and is welded with the clamping plate 1.
2. Installing the plugging device in the launder, the process is as follows:
(1) The whole device is inserted into a water flowing groove, the clamping shaft 2 is pressed down, the bulge 3 passes through the male groove 7 of the pressing sleeve 5 until the bulge 3 enters the rotating space 8 in the pressing sleeve 5 and then rotates 90 degrees, and a hexagonal head at the top of the clamping shaft 2 provides a force application point;
(2) The clamping shaft 2 is released, the whole device is firmly fixed on the top bearing plate 6 under the action of the spring 4 by the clamping plate 1 and the pressing sleeve 5, and meanwhile, the protruding part 3 of the clamping shaft 2 enters the female groove 9 to prevent rotation.
(3) When the device is dismounted, the clamping shaft 2 is pressed down until the lug boss 3 enters the rotating space 8, then the lug boss is rotated by 90 degrees in the direction opposite to the mounting direction, and after the lug boss passes through the male slot 7, the whole device and the top supporting plate 6 are separated from the upper surface.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A rotary buckle type gutter channel plugging device for a steam generator is characterized by comprising a clamping shaft and a pressing sleeve, wherein one end of the clamping shaft is connected with a clamping plate, the other end of the clamping shaft penetrates through the pressing sleeve, and a spring which is abutted against the pressing sleeve is sleeved on the outer side of the clamping shaft;
the two sides of the clamping shaft are symmetrically provided with convex parts, the outer surface of the pressing sleeve is provided with a male groove, the inner surface of the pressing sleeve is provided with a female groove which forms a set angle with the male groove, and the two sides of the pressing sleeve are provided with extension parts; the convex part is positioned in the male groove to be in a first state, the convex part is positioned in the female groove to be in a second state, and the clamping shaft is rotated to change the clamping shaft from the first state to the second state so that the clamping plate is matched with the outward extending part of the pressing sleeve to block the drainage channel.
2. The steam generator turning buckle type launder plugging device according to claim 1, characterized in that said pressing sleeve is internally provided with a stepped cavity, and the size of said cavity is gradually reduced from one end close to the female channel to the other end.
3. The steam generator screwing-type spout plugging device of claim 2, wherein the clamping shaft is circumferentially provided with a first boss, the inner cavity of the pressing sleeve is provided with a second boss, the spring is arranged between the first boss and the second boss, and two ends of the spring are respectively embedded into the clamping groove of the first boss and the clamping groove of the second boss.
4. A steam generator turnbuckle type launder plugging device according to claim 3, wherein said first boss diameter is smaller than both the press sleeve first compression space inner diameter and the boss length.
5. The steam generator screwing-type launder plugging device according to claim 1, characterized in that two male grooves and two female grooves form a cross-shaped structure.
6. The steam generator screwing-type spout plugging device of claim 1, wherein the locking plate is rectangular, and the extension direction of the two protrusions is consistent with the width direction of the locking plate.
7. The steam generator turnbuckle type launder plugging device according to claim 1, wherein said press sleeve has a circular cross-section.
8. The steam generator screwing-type spout plugging device of claim 1, wherein a plurality of flow holes are formed on the surface of the pressing sleeve opposite to the surface of the male slot.
9. The steam generator spin-buckle type launder plugging device according to claim 1, wherein the top of said clamping shaft is provided with a hexagonal head for applying force.
10. A method for using a steam generator turnbuckle type launder plugging device according to any one of claims 1-9, comprising:
inserting the plugging device into the launder, pressing the clamping shaft downwards to enable the bulge to pass through the male groove to reach the inner cavity of the pressing sleeve, rotating the clamping shaft by 90 degrees, releasing the clamping shaft, fixing the clamping plate and the pressing sleeve on the top supporting plate under the action of a spring, and enabling the bulge to enter the female groove;
when the plugging device is dismounted, the clamping shaft is pressed downwards until the protruding part enters the cavity in the pressing sleeve, the clamping shaft is rotated in the reverse direction by 90 degrees, and the device is separated from the upper surface of the top supporting plate after the protruding part passes through the male slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607862.5A CN115218172B (en) | 2022-05-31 | 2022-05-31 | Spiral-lock type flow channel plugging device and method for steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210607862.5A CN115218172B (en) | 2022-05-31 | 2022-05-31 | Spiral-lock type flow channel plugging device and method for steam generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115218172A true CN115218172A (en) | 2022-10-21 |
| CN115218172B CN115218172B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210607862.5A Active CN115218172B (en) | 2022-05-31 | 2022-05-31 | Spiral-lock type flow channel plugging device and method for steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115218172B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8527749D0 (en) * | 1984-11-13 | 1985-12-18 | Westinghouse Electric Corp | Steam generator wrapper closure |
| JP2008311020A (en) * | 2007-06-13 | 2008-12-25 | Nissan Diesel Motor Co Ltd | Connector device |
| KR20110068744A (en) * | 2009-12-14 | 2011-06-22 | (주)코트랩 | Open system with sink |
| CN203658280U (en) * | 2013-12-30 | 2014-06-18 | 中核武汉核电运行技术股份有限公司 | Secondary side tube plate video inspection tool for steam generator |
| CN103868049A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Novel supporting device for steam generator heat exchange tubes of pressurized water reactor nuclear power plant |
| CN104749183A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Video inspection tool for secondary side tube plate of steam generator |
| DE202017106212U1 (en) * | 2017-02-28 | 2017-10-19 | Fujian Xihe Sanitary Ware Technology Co., Ltd | Valve |
| CN110895181A (en) * | 2019-12-31 | 2020-03-20 | 中核武汉核电运行技术股份有限公司 | Helium leakage detection sealing plug for welding seam of heat transfer pipe and tube plate of steam generator |
-
2022
- 2022-05-31 CN CN202210607862.5A patent/CN115218172B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8527749D0 (en) * | 1984-11-13 | 1985-12-18 | Westinghouse Electric Corp | Steam generator wrapper closure |
| JP2008311020A (en) * | 2007-06-13 | 2008-12-25 | Nissan Diesel Motor Co Ltd | Connector device |
| KR20110068744A (en) * | 2009-12-14 | 2011-06-22 | (주)코트랩 | Open system with sink |
| CN103868049A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Novel supporting device for steam generator heat exchange tubes of pressurized water reactor nuclear power plant |
| CN203658280U (en) * | 2013-12-30 | 2014-06-18 | 中核武汉核电运行技术股份有限公司 | Secondary side tube plate video inspection tool for steam generator |
| CN104749183A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Video inspection tool for secondary side tube plate of steam generator |
| DE202017106212U1 (en) * | 2017-02-28 | 2017-10-19 | Fujian Xihe Sanitary Ware Technology Co., Ltd | Valve |
| CN110895181A (en) * | 2019-12-31 | 2020-03-20 | 中核武汉核电运行技术股份有限公司 | Helium leakage detection sealing plug for welding seam of heat transfer pipe and tube plate of steam generator |
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| Publication number | Publication date |
|---|---|
| CN115218172B (en) | 2024-05-14 |
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