CN205057861U - Heat exchanger inspection tube sheet angle toe structure - Google Patents
Heat exchanger inspection tube sheet angle toe structure Download PDFInfo
- Publication number
- CN205057861U CN205057861U CN201520837125.XU CN201520837125U CN205057861U CN 205057861 U CN205057861 U CN 205057861U CN 201520837125 U CN201520837125 U CN 201520837125U CN 205057861 U CN205057861 U CN 205057861U
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- China
- Prior art keywords
- toe
- cylinder body
- inner cylinder
- support bar
- claw
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- Withdrawn - After Issue
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Abstract
The utility model relates to a heat exchange tube nondestructive test and maintenance technical field specifically disclose a heat exchanger inspection tube sheet angle toe structure. This location toe structure includes toe outer cylinder bushing, the interior cylinder body of toe, bracing piece and claw, and the toe inner casing bodily form that toe outer cylinder bushing matees rather than inside becomes cylinder body piston structure, internal of toe inner casing is opened has the cavity, and the bracing piece lower extreme that sets up in this cavity forms the piston structure with this cavity matching, and upper end of the support bar passes the interior cylinder body upper portion of toe, and the toe conical surface of upper end of the support bar for the toper structure to the cover has the claw clamping face on the toe conical surface, be equipped with compression spring in terminal surface and the toe under the cylinder body cavity between the terminal surface under the bracing piece. The utility model discloses a location toe structure adopts simple reliable slide wedge structure, and this structure has the commonality, can guarantee the unchangeable circumstances of bracing piece structural strength under, it is littleer that the external diameter of claw is done to be applicable to the heat -transfer pipe of little pipe diameter, this kind of structure has increased the application scope of location toe.
Description
Technical field
The utility model belongs to heat exchanger tube Non-Destructive Testing and maintenance technique field, is specifically related to a kind of heat exchanger and checks tube sheet location toe structure.
Background technology
Heat exchanger, steam generator are the parts of most critical in nuclear power plant system, ensure the safe operation of this kind equipment, guarantee the integrality of primary Ioops system, regularly must carry out Non-Destructive Testing to the heat-transfer pipe of nuclear power station heat exchanger, steam generator.Lossless detection method more common at present regularly carries out heat-transfer pipe vortex inspection, heat-transfer pipe vortex detects the locate mode used two kinds, one is mechanical arm type probe locating device, another kind of more advanced way utilizes creeping-type positioner to position, and creeping-type positioner relies on clamping device alternately to clamp with the positioning function realized heat-transfer pipe on the tube sheet of heat-transfer pipe.After having located, eddy current probe is inserted corresponding heat-transfer pipe and implement to check.
Summary of the invention
The purpose of this utility model is to provide a kind of heat exchanger to check tube sheet location toe structure, and it can improve stability and the reliability of heat-transfer pipe clamping, and the clamping effect particularly for pipe with small pipe diameter heat-transfer pipe is good, and has good error serious forgiveness.
The technical solution of the utility model is as follows: a kind of heat exchanger checks tube sheet location toe structure, this location toe structure comprises toe outer cylinder sheath, toe inner cylinder body, support bar and claw, wherein, the toe inner cylinder body of toe outer cylinder sheath and its matching internal forms cylinder piston structure; Toe inner cylinder body inside has cavity, the support bar lower end be arranged in this cavity is mated with this cavity and is formed piston structure, post upper is through toe inner cylinder body top, and post upper is the toe conical surface of pyramidal structure, and cover has claw clamping face on the toe conical surface, itself and toe inner cylinder body fix, and are arranged in the tube structure of toe outer cylinder sheath upper end; Between support bar lower surface and toe inner cylinder body cavity lower surface, be provided with Compress Spring, and be equipped with the air admission hole being communicated with the external world at the toe inner cylinder body internal cavities split by support bar lower end; The convex eaves structure in toe inner cylinder body lower end is provided with stroke frizzen, its cylinder interior formed at toe outer cylinder sheath sidewall as piston bush, between the convex eaves in toe inner cylinder body lower end and the convex eaves of toe outer cylinder sheath upper end barrel, is also provided with extension spring.
Described stroke frizzen and toe outer cylinder sheath side sidewall form flexible assistant cylinder, and are provided with limited block, by stroke frizzen in stroke frizzen upper end) with the touching of limited block, as the triggering signal that stroke frizzen accurately puts in place.
Described claw clamping face upper end is petal-like claw, by the relative motion of the toe conical surface relative to claw clamping face, and can by claw distending or retraction.
The sidewall of described toe inner cylinder body has passage, the air inlet Ba of toe inner cylinder body lower surface perforate is connected with the cavity above the piston body structure of support bar lower end; Toe inner cylinder body lower end has through hole, forms air inlet Bb, support bar lower surface is connected with air inlet Bb.
Described toe outer cylinder sheath sidewall has air inlet Aa and air inlet Ab, air inlet Aa is connected with the top cavity of stroke frizzen piston portion, air inlet Ab is connected with the lower cavity of stroke frizzen piston portion.
Remarkable result of the present utility model is: a kind of heat exchanger described in the utility model checks tube sheet location toe structure, adopt simple and reliable wedge structure, this structure has versatility, when can ensure that supporting bar structure intensity is constant, it is less that the external diameter of claw does, thus be applicable to the heat-transfer pipe of pipe with small pipe diameter, such a structure increases the scope of application of location toe; The three cylinder linkage techniques adopted can strengthen the reliability of equipment, and when the telescopic cylinder of locating toe stretches out not in place, flexible assistant cylinder can provide additional power, makes it accurately put in place; The piston rod of flexible assistant cylinder is simultaneously as stroke frizzen, and stroke frizzen realizes whether replying to telescopic cylinder the detection effect that put in place, and when cylinder can not be retracted completely, travel switch can not trigger signal feedback.
Accompanying drawing explanation
Fig. 1 is that a kind of heat exchanger described in the utility model checks tube sheet location toe structure use occasion schematic diagram;
Fig. 2 is that a kind of heat exchanger described in the utility model checks tube sheet location toe structural upright schematic diagram;
Fig. 3 is that a kind of heat exchanger described in the utility model checks tube sheet location toe structural front view;
Fig. 4 is that a kind of heat exchanger described in the utility model checks tube sheet location toe structure sectional view;
Fig. 5 is that a kind of heat exchanger described in the utility model checks claw sectional view in the toe structure of tube sheet location;
In figure: positioner of 1, creeping; 2, tube sheet; 3, toe structure is located; 4, heat-transfer pipe; 5, addendum cone; 6, travel switch; 7, extension spring; 8, air inlet Aa; 9, air inlet Ab; 10, claw; 11, stroke frizzen; 12, support bar; 13, toe inner cylinder body; 14, toe outer cylinder sheath; 15, air inlet Ba; 16, air inlet Bb; 17, Compress Spring; 18, the claw conical surface; 19, claw clamping face.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Fig. 1 ~ 5, a kind of heat exchanger checks that tube sheet location toe structure 3 is arranged on and creeps in positioner 1, at least four location toe structures 3 are divided into flexible and clamping two groups, location toe structure 3 is utilized to be clamped in the heat-transfer pipe 4 in tube sheet 2, realize gripping positioner 1 of creeping, and utilize the addendum cone 5 above the toe structure 3 of location, realize creeping the balance of positioner 1 horizontal plane, wherein, location toe structure 3 comprises toe outer cylinder sheath 14, toe inner cylinder body 13, support bar 12 and claw 10, wherein, toe outer cylinder sheath 14 is shell structure, its lower end inner walls and toe inner cylinder body 13 match, form piston structure, toe inner cylinder body 13 can be slided up and down in toe outer cylinder sheath 14, toe inner cylinder body 13 inside has cavity, support bar 12 lower end is the piston body structure matched with toe inner cylinder body 13 internal cavity structure, toe inner cylinder body 13 is run through in support bar 12 upper end, and the toe conical surface 18 forming tapered structure in upper end has claw clamping face 19 at the toe conical surface 18 overcoat, claw clamping face 19 and toe inner cylinder body 13 fix, and be enclosed within the tube structure being arranged in toe outer cylinder sheath 14 upper end, claw clamping face 19 upper end is petal-like claw 10, by the relative motion of the toe conical surface 18 relative to claw clamping face 19, can by claw 10 distending or retraction, support bar 12 lower surface has groove, and is provided with Compress Spring 17 between support bar 12 lower surface groove and the groove of toe inner cylinder body 13 internal cavities lower end, the sidewall of toe inner cylinder body 13 has passage, the air inlet Ba15 of toe inner cylinder body 13 lower surface perforate is connected with the cavity above the piston body structure of support bar 12 lower end, toe inner cylinder body 13 lower end has through hole, forms air inlet Bb16, support bar 12 lower surface is connected with air inlet Bb16, toe inner cylinder body 13 lower end has convex eaves structure, this convex eaves structure is connected with the convex eaves on the barrel of toe outer cylinder sheath 14 upper end by extension spring 7, and in the convex eaves structure in toe inner cylinder body 13 lower end, stroke frizzen 11 is installed, stroke frizzen 11 is as piston body, be enclosed within the cylinder interior that toe outer cylinder sheath 14 1 sidewall is formed, form flexible assistant cylinder, limited block is provided with in piston stroke frizzen 11 upper end, by the touching of stroke frizzen 11 upper end and limited block, as the triggering signal that stroke frizzen 11 accurately puts in place, have air inlet Aa8 on the cylinder body top of installing piston stroke frizzen 11, have air inlet Ab9 in bottom.
A kind of heat exchanger described in the utility model checks that the specific works principle of tube sheet location toe structure is: positioner 1 of creeping relies on location toe structure 3 to be suspended on tube sheet 2, " cross " structure that two groups of location toe structures 3 compositions of creeping positioner 1 intersect, two groups of location toe structure alternately clampings, drive slide and pedestal to rotate by motor, drive eddy current testing probe to locate at corresponding heat-transfer pipe 4.The original state of location toe structure 3 is kept by acting force of the spring, and due to the effect of coil tension spring 7, the claw 10 in the toe structure 3 of location is in the state of stretching out; Due to the effect of Compress Spring 17, the claw 10 of location toe 3 is in distending state.Location toe structure 3 SBR is for entering the ready work of heat-transfer pipe, first toe inner cylinder body 13 is made to skid off toe outer cylinder sheath 14 by air inlet Aa8 air inlet, claw 10 is in retracted mode, and air inlet Ba15 air inlet makes support bar 12 be compressed by Compress Spring 17, and claw 10 is in the state of tightening up.Location toe structure 3 working stage, air inlet Aa8 loses heart, air inlet Ab9 air inlet, utilize the power that extension spring 7 and flexible assistant cylinder provide, the claw 10 of location toe structure 3 puts in heat-transfer pipe 4, and the piston rod stroke frizzen 11 of flexible assistant cylinder triggers travel switch 6 and sends signal, represents that the claw 10 of location toe structure 3 stretches out and puts in place, now addendum cone 5 withstands on heat-transfer pipe 4, and positioner 1 of creeping relatively tube sheet 2 keeps poised state.Then air inlet Ba15 loses heart, air inlet Bb16 air inlet, and support bar moves along insertion heat-transfer pipe direction, by the claw conical surface 18 on claw 10 by petal-shaped claw 10 outwards distending.Claw 10 is distending outwards, and external diameter becomes large, thus claw clamping face 19 is tightly fitted with heat-transfer pipe, and claw 10 is through Overheating Treatment, and frictionally makes creeping-type positioner hang upside down on heat-transfer pipe 4.In like manner, contrary with foregoing description flow process makes location toe structure 3 restPose.
Claims (5)
1. a heat exchanger checks tube sheet location toe structure, it is characterized in that: this location toe structure comprises toe outer cylinder sheath (14), toe inner cylinder body (13), support bar (12) and claw (10), wherein, toe outer cylinder sheath (14) forms cylinder piston structure with the toe inner cylinder body (13) of its matching internal; Toe inner cylinder body (13) inside has cavity, support bar (12) lower end be arranged in this cavity is mated with this cavity and is formed piston structure, support bar (12) upper end is through toe inner cylinder body (13) top, and support bar (12) upper end is the toe conical surface (18) of pyramidal structure, and have claw clamping face (19) at the upper cover of the toe conical surface (18), itself and toe inner cylinder body (13) fix, and are arranged in the tube structure of toe outer cylinder sheath (14) upper end; Between support bar (12) lower surface and toe inner cylinder body (13) cavity lower surface, be provided with Compress Spring (17), and be equipped with the air admission hole being communicated with the external world at toe inner cylinder body (13) internal cavities split by support bar (12) lower end; The convex eaves structure in toe inner cylinder body (13) lower end is provided with stroke frizzen (11), its cylinder interior formed at toe outer cylinder sheath (14) sidewall as piston bush, is also provided with extension spring (7) between the convex eaves in toe inner cylinder body (13) lower end and the convex eaves of toe outer cylinder sheath (14) upper end barrel.
2. a kind of heat exchanger according to claim 1 checks tube sheet location toe structure, it is characterized in that: described stroke frizzen (11) and toe outer cylinder sheath (14) side sidewall form flexible assistant cylinder, and be provided with limited block in stroke frizzen (11) upper end, by the touching of stroke frizzen (11) with limited block, as the triggering signal that stroke frizzen (11) accurately puts in place.
3. a kind of heat exchanger according to claim 1 checks tube sheet location toe structure, it is characterized in that: described claw clamping face (19) upper end is petal-like claw (10), by the relative motion of the toe conical surface (18) relative to claw clamping face (19), can by claw (10) distending or retraction.
4. a kind of heat exchanger according to claim 1 checks tube sheet location toe structure, it is characterized in that: the sidewall of described toe inner cylinder body (13) has passage, the air inlet Ba (15) of toe inner cylinder body (13) lower surface perforate is connected with the cavity above the piston body structure of support bar (12) lower end; Toe inner cylinder body (13) lower end has through hole, forms air inlet Bb (16), support bar (12) lower surface is connected with air inlet Bb (16).
5. a kind of heat exchanger according to claim 1 and 2 checks tube sheet location toe structure, it is characterized in that: described toe outer cylinder sheath (14) sidewall has air inlet Aa (8) and air inlet Ab (9), air inlet Aa (8) is connected with the top cavity of stroke frizzen (11) piston portion, air inlet Ab (9) is connected with the lower cavity of stroke frizzen (11) piston portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837125.XU CN205057861U (en) | 2015-10-27 | 2015-10-27 | Heat exchanger inspection tube sheet angle toe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837125.XU CN205057861U (en) | 2015-10-27 | 2015-10-27 | Heat exchanger inspection tube sheet angle toe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205057861U true CN205057861U (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520837125.XU Withdrawn - After Issue CN205057861U (en) | 2015-10-27 | 2015-10-27 | Heat exchanger inspection tube sheet angle toe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205057861U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239543A (en) * | 2016-09-30 | 2016-12-21 | 中广核检测技术有限公司 | A kind of superfine pipe diameter heat-transfer pipe of evaporator tube sheet many fingers locking gas pawl |
| CN106607783A (en) * | 2015-10-27 | 2017-05-03 | 核动力运行研究所 | Heat exchanger tubesheet checking locating toe structure |
| CN106970146A (en) * | 2017-03-28 | 2017-07-21 | 哈尔滨工业大学 | A kind of steam generator heat-transfer pipe detection device orientation connecting mechanism |
| CN114147693A (en) * | 2021-12-28 | 2022-03-08 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Safe locking and positioning device for rotary arm |
-
2015
- 2015-10-27 CN CN201520837125.XU patent/CN205057861U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106607783A (en) * | 2015-10-27 | 2017-05-03 | 核动力运行研究所 | Heat exchanger tubesheet checking locating toe structure |
| CN106239543A (en) * | 2016-09-30 | 2016-12-21 | 中广核检测技术有限公司 | A kind of superfine pipe diameter heat-transfer pipe of evaporator tube sheet many fingers locking gas pawl |
| CN106239543B (en) * | 2016-09-30 | 2018-10-26 | 中广核检测技术有限公司 | A kind of more fingers locking pneumatic clampers of superfine pipe diameter heat-transfer pipe of evaporator tube sheet |
| CN106970146A (en) * | 2017-03-28 | 2017-07-21 | 哈尔滨工业大学 | A kind of steam generator heat-transfer pipe detection device orientation connecting mechanism |
| CN106970146B (en) * | 2017-03-28 | 2020-02-21 | 哈尔滨工业大学 | Positioning and connecting mechanism of steam generator heat-transfer pipe detection equipment |
| CN114147693A (en) * | 2021-12-28 | 2022-03-08 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Safe locking and positioning device for rotary arm |
| CN114147693B (en) * | 2021-12-28 | 2024-01-26 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Safety locking and positioning device for rotating arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160302 Effective date of abandoning: 20181130 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160302 Effective date of abandoning: 20181130 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |