CN105215919A - Leakage ring outer shroud withdrawing device and installation method thereof are drawn in a kind of outer support formula valve stem packing - Google Patents
Leakage ring outer shroud withdrawing device and installation method thereof are drawn in a kind of outer support formula valve stem packing Download PDFInfo
- Publication number
- CN105215919A CN105215919A CN201410309956.XA CN201410309956A CN105215919A CN 105215919 A CN105215919 A CN 105215919A CN 201410309956 A CN201410309956 A CN 201410309956A CN 105215919 A CN105215919 A CN 105215919A
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- conical surface
- outer shroud
- elastic claw
- tapered sleeve
- surface elastic
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Abstract
The invention provides a kind of outer support formula valve stem packing and draw leakage ring outer shroud withdrawing device and installation method thereof, comprise conical surface elastic claw (1), tapered sleeve (2) and fuller (4); The middle part of tapered sleeve (2) and the top of conical surface elastic claw (1) are threaded connection, and adopt cone match with conical surface elastic claw (1) bottom.Its installation method comprises the steps: conical surface elastic claw (1), tapered sleeve (2) and fuller (4) to be installed successively; To draw and leak ring outer shroud (6) and take out from filler chamber and cut or pinch off; Unclamp trip bolt (8) detaching device.Beneficial effect is: when filler chamber narrow space, can draw leakage ring outer shroud by convenient, fast, reliable taking-up filler; And can run at the equipment that do not affect and realize online installation and removal, easy to operate, structure is simple, firm grip.
Description
Technical field
The invention belongs to nuclear power station electric gate valve technical field, be specifically related to a kind of outer support formula valve stem packing and draw leakage ring outer shroud withdrawing device and installation method thereof.
Background technology
There is following hidden danger or fault in current nuclear power station electric gate valve: filler draws leakage ring slight deformation, graphite packing chip easily embeds in the gap of drawing and leaking between ring outer wall and packing cavity chamber interior walls, cannot clear up, cause filler to draw leaking ring and packing cavity chamber interior walls occurring swelling bite phenomenon, filler draws leakage ring and cannot take out from filler chamber.Being drawn by filler when employing electric spark technique leaks after ring is divided into inner ring and outer shroud two parts, as shown in Figure 1, needs to adopt specific purpose tool to be drawn by this two parts filler and leak ring to take out from filler chamber respectively.Therefore need to provide a kind of valve stem packing to draw and leak ring outer shroud withdrawing device and installation method thereof.
Summary of the invention
The object of the invention is to draw for valve stem packing to leak after ring is divided into inner ring and outer shroud, outer shroud takes out the technical problem of difficulty, provides a kind of outer support formula valve stem packing and draws leakage ring outer shroud withdrawing device and installation method thereof.
Technical scheme of the present invention is:
Leakage ring outer shroud withdrawing device is drawn in a kind of outer support formula valve stem packing, comprises conical surface elastic claw, tapered sleeve and fuller; Tapered sleeve external wall of upper portion has annular groove, and fuller is arranged in the groove of tapered sleeve, axially can move up and down in groove along tapered sleeve; The middle part of tapered sleeve and bottom are positioned at conical surface elastic claw, and the middle part of tapered sleeve and the top of conical surface elastic claw are threaded connection; The lower inner wall thickness of conical surface elastic claw constantly increases the formation conical surface, and the bottom inwardly protruding of conical surface elastic claw forms circular cone in normal state, and under using state, the bottom of conical surface elastic claw expands outwardly under the effect of hammer cover.
Described conical surface elastic claw, tapered sleeve and fuller are splits half-ring assembling unit structure, splits half-ring sub-assembly reliably connect respectively by trip bolt by two.
The bottom of described conical surface elastic claw is designed with barb-like structure, leaks ring outer shroud for hooking to draw.
The inwall of described tapered sleeve bottom is straight-tube shape or cone-shaped.
Multiple groove has been cut in the bottom of described conical surface elastic claw, and be divided into multiple part to form corpus unguis, bottom is with overhead structure.
The bottom of described conical surface elastic claw is multiple corpus unguis that elastic sheet metal is formed, and barb-like structure is arranged at bottom, leaks ring inner ring for hooking to draw.
Described corpus unguis can be " ㄅ " shape or cone-shaped.
Present invention also offers the valve stem packing of a kind of above-mentioned outer support formula and draw the installation method leaking ring outer shroud withdrawing device, in turn include the following steps:
Step 1. adopts electrical discharge machining process method to be leaked ring drawing in packing cavity to be divided into drawing to leak ring outer shroud and draw and to leak ring inner ring;
Step 2. determines the installation dimension of conical surface elastic claw, tapered sleeve and fuller by on-the-spot test and test, is then arranged on outside valve rod by tapered sleeve, splits half-ring sub-assembly reliably connect by trip bolt by two;
Conical surface elastic claw is arranged in the middle part of tapered sleeve and lower outside by step 3., splits half-ring sub-assembly reliably connect by trip bolt by two; Then fuller is arranged in the groove on tapered sleeve top, splits half-ring sub-assembly by trip bolt by two and reliably connect;
The valve stem packing of outer support formula is drawn leakage ring outer shroud withdrawing device and is moved down into filler chamber correct position by step 4.;
Step 5. uses the valve stem packing of mounted outer support formula to draw to leak ring outer shroud withdrawing device will draw to leak ring outer shroud takes out from filler chamber, cuts or pinch off with instrument, thus filler is drawn leakage ring outer shroud and take out from valve rod;
Step 6. unclamps the trip bolt on conical surface elastic claw, tapered sleeve and fuller, removes the valve stem packing of whole outer support formula and draws leakage ring outer shroud withdrawing device.
Beneficial effect of the present invention is:
A kind of outer support formula of the present invention valve stem packing draws leakage ring outer shroud withdrawing device when filler chamber narrow space, can draw leakage ring outer shroud by convenient, fast, reliable taking-up filler; And can run at the equipment that do not affect and realize online installation and removal, easy to operate, structure is simple, firm grip.According to the design feature of field apparatus body, the outer support formula valve stem packing of the present embodiment is drawn between the top of the conical surface elastic claw leaked in ring outer shroud withdrawing device and the middle part of tapered sleeve and is adopted threaded engagement, cone match is adopted between bottom, when tapered sleeve rotates and moves down, the corpus unguis of conical surface elastic claw expands outwardly, a radial external support force is provided, firm grip to drawing leakage ring outer shroud.And conical surface elastic claw bottom design has barb-like structure, filler can be hooked and draw and leak ring outer shroud, by fuller upwards hammering tapered sleeve repeatedly, can draw and leak ring outer shroud by convenient and reliable taking-up filler.This device repeatedly uses in the service work of nuclear power station electric gate valve, and facts have proved that it is simple to operate, dependable performance, chuck strength is high, and for convenience detach drawing leaks ring outer shroud, does not cause any damage to valve rod or valve body, and result of use is good, reaches designing requirement.
Accompanying drawing explanation
Fig. 1 is background technology schematic diagram of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 splits half-ring structure to be fixedly connected with mode schematic diagram;
Fig. 4 is that in Fig. 1, conical surface elastic claw and tapered sleeve capture the duty position view before outer shroud;
Duty position view when Fig. 5 is conical surface elastic claw and tapered sleeve crawl outer shroud in Fig. 1;
Fig. 6 is the duty position view of fuller in Fig. 1.
In figure, 1-conical surface elastic claw, 2-tapered sleeve, 3-corpus unguis, 4-fuller, 5-valve rod, 6-draws leakage ring outer shroud, and 7-draws leakage ring inner ring, 8-trip bolt, 9-valve.
Arrow represents the fuller direction of motion.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described further.
Leakage ring outer shroud withdrawing device is drawn in a kind of outer support formula valve stem packing, and its structure as shown in Figure 2, comprises conical surface elastic claw 1, tapered sleeve 2 and fuller 4.Conical surface elastic claw 1, tapered sleeve 2 and fuller 4 are splits half-ring assembling unit structure, splits half-ring sub-assembly and reliably connects, as shown in Figure 3 respectively by trip bolt 8 by two.Determine that filler draws the relative dimensions of leaking conical surface elastic claw 1, tapered sleeve 2 and fuller 4 in ring outer shroud withdrawing device by on-the-spot test and experiment, the space requirement of the size conforms filler chamber after connection, make there is certain gap between the outer wall of the withdrawing device of the present embodiment and valve rod 5, in use can not with valve rod 5 outer wall generation bite phenomenon.
Tapered sleeve 2 external wall of upper portion has annular groove, and fuller 4 is arranged in the groove of tapered sleeve 2, axially can move up and down in groove along tapered sleeve 2.The middle part of tapered sleeve 2 and bottom are positioned at conical surface elastic claw 1.The middle part of tapered sleeve 2 and the top of conical surface elastic claw 1 are threaded connection, and conical surface elastic claw 1 can be made to expand outwardly by rotating tapered sleeve 2.Bottom and the conical surface elastic claw 1 of tapered sleeve 2 adopt cone match, the lower inner wall thickness of conical surface elastic claw 1 constantly increases the formation conical surface, the bottom inwardly protruding of conical surface elastic claw 1 forms circular cone in normal state, under using state, the bottom of conical surface elastic claw 1 expands outwardly under the effect of tapered sleeve 2, thus produces external support force to drawing leakage ring outer shroud 6.
In order to increase elastic deformation amount, multiple groove can have been cut in the bottom of conical surface elastic claw 1, and be divided into many parts to form corpus unguis 3, bottom is with overhead structure.The bottom of conical surface elastic claw 1 can also be multiple corpus unguis of elastic sheet metal formation, and barb-like structure is arranged at bottom, leaks ring outer shroud 6 for hooking to draw; Corpus unguis 3 can be " ㄅ " shape or cone-shaped.The inwall of tapered sleeve 2 bottom can be straight-tube shape, can be also the conical surface, and tapered sleeve 2 is contacted with conical surface elastic claw 1 lower inner surface when moving downward.
The worked of this withdrawing device is called: rotate tapered sleeve 2 and move down, by the cone match between conical surface elastic claw 1 and tapered sleeve 2, the corpus unguis of conical surface elastic claw 1 is expanded outwardly, and produce radial external support force, barb-like structure bottom conical surface elastic claw 1, can hook to draw and leak ring outer shroud 6, as shown in Figure 4 and Figure 5.By fuller 4 upwards hammering tapered sleeve 2 repeatedly, as shown in Figure 6, can draw and leak ring outer shroud 6 by convenient and reliable taking-up filler.
The valve stem packing of above-mentioned outer support formula is drawn the installation method leaking ring outer shroud withdrawing device and is in turn included the following steps:
Step 1. adopts electrical discharge machining process method to be leaked ring drawing in packing cavity to be divided into drawing to leak ring outer shroud 6 and draw and to leak ring inner ring 7;
Step 2. determines the installation dimension of conical surface elastic claw 1, tapered sleeve 2 and fuller 4 by on-the-spot test and test, is then arranged on outside valve rod 5 by tapered sleeve 2, splits half-ring assembly reliably connect by trip bolt 8 by two;
Conical surface elastic claw 1 is arranged in the middle part of tapered sleeve 2 and lower outside by step 3., splits half-ring assembly reliably connect by trip bolt 8 by two; Then fuller 4 is arranged on by the groove on tapered sleeve 2 top, splits half-ring assembly by trip bolt 8 by two and reliably connect;
The valve stem packing of outer support formula is drawn leakage ring outer shroud withdrawing device and is moved down into filler chamber correct position by step 4.;
Step 5. uses the valve stem packing of mounted outer support formula to draw to leak ring outer shroud withdrawing device will draw to leak ring outer shroud 6 takes out from filler chamber, cuts or pinch off with instrument, thus filler is drawn leakage ring outer shroud 6 and take out from valve rod 5;
Step 6. unclamps the trip bolt on conical surface elastic claw 1, tapered sleeve 2 and fuller 4, removes the valve stem packing of whole outer support formula and draws leakage ring outer shroud withdrawing device.
The outer support formula valve stem packing of the present embodiment draws leakage ring outer shroud withdrawing device when filler chamber narrow space, can draw leakage ring outer shroud 6 by convenient, fast, reliable taking-up filler; And when not affecting equipment and running, can realize online installation and removal, easy to operate, structure is simple, firm grip.According to the design feature of field apparatus body, the outer support formula valve stem packing of the present embodiment is drawn between the top of the conical surface elastic claw 1 leaked in ring outer shroud withdrawing device and the middle part of tapered sleeve 2 and is adopted threaded engagement, cone match is adopted between bottom, when tapered sleeve 2 rotates and moves down, conical surface elastic claw 1 expands outwardly provides a radial external support force, firm grip to drawing leakage ring outer shroud.And conical surface elastic claw 1 bottom design has barb-like structure, filler can be hooked and draw and leak ring outer shroud 6, by fuller 4 upwards hammering tapered sleeve 2 repeatedly, can draw and leak ring outer shroud 6 by convenient and reliable taking-up filler.This device repeatedly uses in the service work of nuclear power station electric gate valve, facts have proved that it is simple to operate, dependable performance, chuck strength is high, and for convenience detach drawing leaks ring outer shroud 6, does not cause any damage to valve rod 5 or valve 9 body, result of use is good, reaches designing requirement.
Above embodiments of the invention are explained in detail, above-mentioned embodiment is only optimum embodiment of the present invention, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (8)
1. a leakage ring outer shroud withdrawing device is drawn in the valve stem packing of outer support formula, it is characterized in that: comprise conical surface elastic claw (1), tapered sleeve (2) and fuller (4); Tapered sleeve (2) external wall of upper portion has annular groove, and fuller (4) is arranged in the groove of tapered sleeve (2), axially can move up and down in groove along tapered sleeve (2); The middle part of tapered sleeve (2) and the top of conical surface elastic claw (1) are threaded connection; The lower inner wall thickness of conical surface elastic claw (1) constantly increases the formation conical surface, the bottom inwardly protruding of conical surface elastic claw (1) forms circular cone in normal state, and under using state, the bottom of conical surface elastic claw (1) expands outwardly under the effect of hammer cover (2).
2. leakage ring outer shroud withdrawing device is drawn in a kind of outer support formula valve stem packing as claimed in claim 1, it is characterized in that: described conical surface elastic claw (1), tapered sleeve (2) and fuller (4) are splits half-ring assembling unit structure, splits half-ring sub-assembly reliably connect respectively by trip bolt (8) by two.
3. leakage ring outer shroud withdrawing device is drawn in a kind of outer support formula valve stem packing as claimed in claim 1, it is characterized in that: the inwall of described tapered sleeve (2) bottom is straight-tube shape or cone-shaped.
4. leakage ring outer shroud withdrawing device is drawn in a kind of outer support formula valve stem packing as claimed in claim 1, it is characterized in that: multiple groove has been cut in the bottom of described conical surface elastic claw (1), is divided into multiple part to form corpus unguis (3).
5. leakage ring outer shroud withdrawing device is drawn in a kind of outer support formula valve stem packing as claimed in claim 1, it is characterized in that: the bottom of described conical surface elastic claw (1) is multiple corpus unguis (3) that elastic sheet metal is formed.
6. leakage ring outer shroud withdrawing device is drawn in the valve stem packing of the outer support formula of the one as described in claim 4 or 5, it is characterized in that: described corpus unguis (3) is " ㄅ " shape or cone-shaped.
7. leakage ring outer shroud withdrawing device is drawn in the one outer support formula valve stem packing as described in claim 1,4 or 5, it is characterized in that: the bottom of described conical surface elastic claw (1) is designed with barb-like structure.
8. a leakage ring outer shroud withdrawing device installation method is drawn in outer support formula according to claim 1 valve stem packing, it is characterized in that in turn including the following steps:
Step 1. adopt electrical discharge machining process method by packing cavity drawing leak ring be divided into draw leak ring outer shroud (6) and draw leakage ring inner ring (7);
Step 2. determines the installation dimension of conical surface elastic claw (1), tapered sleeve (2) and fuller (4) by on-the-spot test and test, then tapered sleeve (2) is arranged on valve rod (5) outside, splits half-ring sub-assembly by trip bolt (8) by two and reliably connect;
Conical surface elastic claw (1) is arranged on tapered sleeve (2) middle part and lower outside by step 3., splits half-ring sub-assembly reliably connect by trip bolt (8) by two; Then fuller (4) is arranged in the groove on tapered sleeve (2) top, splits half-ring sub-assembly by trip bolt (8) by two and reliably connect;
The valve stem packing of outer support formula is drawn leakage ring outer shroud withdrawing device and is displaced downwardly to filler chamber correct position by step 4.;
Step 5. uses the valve stem packing of mounted outer support formula to draw to leak ring outer shroud withdrawing device will draw leakage ring outer shroud (6) and takes out from filler chamber, cut or pinch off with instrument, thus filler is drawn leak ring outer shroud (6) take out from valve rod (5);
Step 6. unclamps the trip bolt on conical surface elastic claw (1), tapered sleeve (2) and fuller (4), removes the valve stem packing of whole outer support formula and draws leakage ring outer shroud withdrawing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309956.XA CN105215919B (en) | 2014-07-01 | 2014-07-01 | Leakage ring outer shroud withdrawing device and its installation method are drawn in a kind of outer support formula valve stem packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309956.XA CN105215919B (en) | 2014-07-01 | 2014-07-01 | Leakage ring outer shroud withdrawing device and its installation method are drawn in a kind of outer support formula valve stem packing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105215919A true CN105215919A (en) | 2016-01-06 |
| CN105215919B CN105215919B (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410309956.XA Active CN105215919B (en) | 2014-07-01 | 2014-07-01 | Leakage ring outer shroud withdrawing device and its installation method are drawn in a kind of outer support formula valve stem packing |
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| CN (1) | CN105215919B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111788038A (en) * | 2018-04-25 | 2020-10-16 | 舍弗勒技术股份两合公司 | Measuring tool |
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| CN203650393U (en) * | 2013-12-17 | 2014-06-18 | 东风汽车公司 | Assembly tool capable of being used for assembling steel cable baffle rings with different diameters |
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| JPH07328868A (en) * | 1994-06-03 | 1995-12-19 | Nippondenso Co Ltd | O-ring inserting device |
| NL1021272C2 (en) * | 2002-08-14 | 2004-02-17 | Haanschoten Josef Gijsbert | Tool for removing bearing from its seat, comprises clamping sleeve and percussion pin with corresponding cone shaped profiles |
| CN200988198Y (en) * | 2006-12-04 | 2007-12-12 | 重庆宗申技术开发研究有限公司 | Engine piston ring assembling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111788038A (en) * | 2018-04-25 | 2020-10-16 | 舍弗勒技术股份两合公司 | Measuring tool |
| CN111788038B (en) * | 2018-04-25 | 2022-07-12 | 舍弗勒技术股份两合公司 | Measuring tool |
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| Publication number | Publication date |
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| CN105215919B (en) | 2018-06-22 |
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