CN1098547A

CN1098547A - Nuclear reactor vessel cap instrumentation column leak-proof device

Info

Publication number: CN1098547A
Application number: CN94101936A
Authority: CN
Inventors: 雅克·马尔曼松
Original assignee: Framatome SA
Current assignee: Areva NP SAS
Priority date: 1993-02-26
Filing date: 1994-02-26
Publication date: 1995-02-08
Also published as: BE1008091A6; KR940020433A

Abstract

Leak-proof device comprises the support component (9) of the leakproof bracing or strutting arrangement (16) that is placed with instrumentation column (5) in it and the device (17,18) of lifting the sealing station of being close to bracing or strutting arrangement (16) on the instrumentation column (5).The leakproof bracing or strutting arrangement (16) of instrumentation column (5) comprises a ring-type retainer (28) and at least one O-ring seal (29).The seal that makes O-ring seal (29) that moves axially of instrumentation column (5) tightens up by means of the effect of ring-type retainer (28).When the moving axially possibility and reduce of instrumentation column (5), use the ring-type retainer (28) of suitable dimension still seal can be tightened up.

Description

Nuclear reactor vessel cap instrumentation column leak-proof device

The present invention relates to be used for instrumentation column, particularly pass the leak-proof device of the thermocouple pile of pressure (hydraulic) water nuclear reactor vessel cap.

In the pressure (hydraulic) water nuclear reactor, the inner container of placing reactor core has one to be roughly semicircular cap, and pipe adapter is equipped with in perforate on the cap in the hole, as the measuring staff of control reactor with such as the passage of instrumentation columns such as thermocouple pile; All place one group of thermopair in each thermocouple pile, be used for measuring the temperature of reactor core knockdown export place liquid coolant.

Each pipe adapter comprises the part of stretching out from cap downwards, is used for guiding thermocouple pile, and the part that protrudes upward from cap, and this part comprises the device that links a tubular part, and this tubular part is used for being supported and fixed on the thermocouple pile on the pipe adapter elongated portion.

In the support component on being fixed to pipe adapter, be placed with the leakproof bracing or strutting arrangement, it is designed to match with the surface of thermocouple pile, thereby provides the leakproof passage for the thermocouple pile in the hole that is positioned at the support component in the pipe adapter axial elongation portion.

Passing the support component endoporus that is positioned on the same axis and the thermocouple pile of pipe adapter endoporus has the end of stretching out support component, it and one use the means for engaging of lifting on the thrust, this device is used for moving axially thermocouple pile.Therefore working pressure can make the supporting surface of the leakproof bracing or strutting arrangement of thermocouple pile and support component contact with each other.

The leak-proof device that is used for supporting thermocouple pile in the support component comprise be formed on the support component endoporus, conical butt supporting surface and seal that its shape and thermocouple pile supporting surface match, when applying pulling force in thermocouple pile upper end and compress, the sealing part is pressed between the supporting surface of the supporting surface of thermocouple pile and support component.

A shortcoming of this type of leak-proof device is, it unclamps low level and compresses the axial displacement that needs a certain size between the high position at thermocouple pile, and this position by supporting surface in the support component is determined with respect to the distance of the axial displacement of the decision of the position of supporting surface when unclamping of thermocouple pile is very difficult.

After former nucleon reactor uses a period of time or after getting lid several times and opening container, some thermocouple pile can be out of shape slightly, thereby no longer is strict linear.

At this moment, just be difficult to even may not guarantee that thermoelectricity in pipe adapter and support component is on a rare occasion behind the segment distance but to guarantee the tight ness rating of sealing.

Therefore must change a complete set of thermocouple pile, cause the very big raising of nucleon reaction stack operation cost.

So far the leak-proof device that does not still have the instrumentation column of any thermocouple pile that is used to pass the nuclear reactor vessel cap and so on, can make thermocouple pile under situation about deforming, in pipe adapter, can't move axially, and be with under the situation that guarantees compression seal spare, in pipe adapter, can't move axially, and be to guarantee also to guarantee under the situation of compression seal spare that thermocouple pile is compacted and be able to leakproof.

Patent FR-A-2,642,217 have described a kind of leak-proof device that is used to pass the instrumentation column of nuclear reactor vessel cap, wherein, support component is made up of two parts in succession, also can extract instrumentation column efficiently and easily out even these two parts are mounted to support component being compressed and is clamped under the situation that the parts on the pipe adapter end kill.

But in this modifying device, there is no any device and be used for being reduced to when needed necessary the moving axially of leakproof seal that guarantees instrument.

Therefore the objective of the invention is to propose a kind of instrumentation column that is used in, particularly pass the leak-proof device of the thermocouple pile of pressure (hydraulic) water nuclear reactor vessel cap, this thermocouple pile is being fastened among the block through hole and is stretching out in the tubular coupler outside cap, this leak-proof device comprises that one is secured on cap outer tube joint one end, and be positioned at the tubular support member in this pipe adapter axial elongation portion and stretch out puller system on the position, support component one end at instrumentation column, this puller system is moved instrumentation column on pipe adapter is axial, thereby the supporting surface that makes instrumentation column comes in contact with the leakproof bracing or strutting arrangement that is contained in the support component, even this leakproof bracing or strutting arrangement deforms and limits the anti-leakage that also can guarantee instrumentation column under the axially movable situation of instrumentation column in pipe adapter and support component at instrumentation column.

For achieving the above object, the leak-proof device that is used for supporting instrumentation column comprises:

One its contact and ring-type retainer that shape and instrumentation column supporting surface shape match, it is in the support component hole and can move axially, thus the supporting surface of the interior instrumentation column of its surface of contact and support component is relative, and

At least one is inserted in the relative one side of retainer surface of contact and support component by the annular seal ring between the surface, when applying pulling force pulling instrumentation column and retainer at instrumentation column one end and come in contact, under the axial force that causes thus, retainer, O-ring seal and support component inside surface interact, thereby have guaranteed the sealing between the endoporus of instrumentation column outside surface and support component.

Be clearer understanding the present invention, be illustrated with two embodiment of way of example with reference to the accompanying drawings leak-proof device of the present invention.

Fig. 1 is the longitudinal sectional view of expression nuclear reactor vessel cap, thermocouple pile passage and leak-proof device of the present invention;

Fig. 2 is vertical side view of expression leak-proof device of the present invention upper part;

Fig. 3 is the vertical view on arrow 3 directions among Fig. 2;

Fig. 4 is 4 to cut-open view among Fig. 2;

Fig. 5 and Fig. 6 are the longitudinal sectional view of expression thermocouple pile and leak-proof device of the present invention upper part;

Fig. 5 represents the leak-proof device of release position;

Fig. 5 A is the enlarged detail of Fig. 5;

Fig. 6 is the leak-proof device of tightened position;

Fig. 6 A is the enlarged detail of Fig. 6;

Fig. 7 and Fig. 8 are the part longitudinal sectional view of second kind of embodiment of leak-proof device of the present invention;

Fig. 7 is the leak-proof device of release position;

Fig. 8 is the leak-proof device of tightened position.

Fig. 1 expresses the part of pressure (hydraulic) water nuclear reactor vessel cap 1, perforation 2 is arranged on the cap, pipe adapter 3 welds hermetically extremely in perforation 2, this pipe adapter comprises that the part of stretching to cap below is used for guiding thermocouple pile 5 and the part of stretching out above cap constitutes funnel-like part 4, and its outside surface is carved with screw thread 4a.

The upper end 4 of pipe adapter 3 links on it is axial parts 6, and there is female hole at a moment the lower end 7 of parts 6, is tightened on the screw thread 4a of pipe adapter 3 funnel-like part 4, thereby seals and seal up thermocouple pile 5.Therefore the installation that is used for sealing and seal in pipe adapter 3 ends the parts of thermocouple pile 5 is protected.Include on the funnel-like part 4 of pipe adapter 3 and potting parts 6 and the lower end 7 annular seal 4 ', 7 ', when all screwing in funnel-like part 4 with 7, two seals 4 ' and 7 ' be harmonious.Seal 4 ' and 7 ' weld extremely, thus the sealing of threaded connection between the parts 4 and 7 guaranteed.

Cap and pipe adapter wherein 3 are transported to the nuclear reactor erecting stage after making well in factory.

At the scene the parts 6 that are used for sealing and seal up thermocouple pile 5 are installed to the upper end of pipe adapter then.

The lower end of parts 6 is installed to the end of pipe adapter, when needed, available melt-sealed 4 ' and the mode at 7 ' junction surface it is taken off, but when only limiting to repair the exception operation that maybe will run through thermocouple pile.

Potting parts 6 comprise upper end part 8, it is installed to end portion 7 hermetically with the metal seal 10 of the special shape in the middle of being inserted in, the part 7 of these potting parts and 8 usefulness anchor clamps 12 are installed together, these anchor clamps are divided into fan-shaped two parts, there are aspectant two lugs its end, perforation 13 is arranged on the lug, inject this perforation with screw and just these two parts can be interlinked and clamp.

Anchor clamps inside has Frusto-conical supporting surface, closely connects with cutting respectively at the end portion 7 of potting parts 6 and the end 7a of upper part 8 and the conical butt supporting surface of 8a.

Pipe adapter 3 and potting parts 6 are made tubulose and are on the same axis, thereby the thermocouple pile that pipe constituted 5 that is used for supporting and place thermopair assembly 15 of serving as reasons provides passage.

The upper part 8 that is used for encapsulating the parts 6 of thermocouple pile has constituted first tubular sections of the support component 9 of leak-proof device of the present invention.The support component 9 of thermocouple pile 5 also comprises second circular segment 11 that is added on first section, and its mode of connection is narrated hereinafter.First tubular sections 8 and second circular segment 11 of support component 9 have endoporus, axially are on the same axis with the endoporus of pipe adapter 3.

The diameter of thermocouple pile 5 upper ends is less than the diameter of its part that continues down, and middle for Frusto-conical shoulder substantially separates, this shoulder has constituted the supporting surface 14 of the thermocouple pile 5 in support component 9.

The leakproof bracing or strutting arrangement 16 that is bonded in the hole of tubular sections 8 of support component 9 abuts against with its supporting surface 14 when thermocouple pile 5 is on the tightened position.

Thermocouple pile 5 unclamps and connects moving between tight position at it and is guaranteed by plate 17, and the perforation of being carved with internal thread is arranged on the plate 17, matches with it within the female at the moment perforation of relay screw 18, and the one end supports second circular segment 11 of post support component 9.

Also has the center pit that matches with instrumentation column 5 ends on the plate 17.

Its external diameter is used for the pulling force that plate 17 applies is passed to thermocouple pile 5 greater than the center bore of plate 17 and the pulling force ring 19 that is made of two semicircular ring that are embedded in the groove that is made on the peripheral part of thermocouple pile upper end.

For description comprises support component 9, the leak-proof device 16 that supports thermocouple pile 5 and the leak-proof device of the present invention of tension board 17, now please referring to Fig. 2 to Fig. 6.

Thereby on the side of first tubular sections 8 of support component 9, dig out the hole groove and form three

groove

20a, 20b and 20c that are mutually 120 ° around tubular sections 8 axle center.

Be mutually among three perforation of 120 ° with three insertions and pass second circular segment 11 and thereby screw rod 21 that tubular sections 8 sinks among groove 20a, 20b and the 20c can be installed in the circular segment 11 of the dish of support component 9 on the tubular sections 8.

In each group groove a fastener 22 is arranged all, have the hole of being carved with internal thread on it, respective threaded rod 21 screwed ends promptly screw in wherein.

Fastener 22 comprises a cylindrical rear surface, is close to the cylindrical surface of

corresponding recesses

20a, 20b and 20c.

The head of screw rod 21 is close to circular segment 11, and fastener 22 is close to the upper surface of

corresponding recesses

20a, 20b and 20c, thereby second circular segment 11 is fastened on first tubular sections 8.

The head of screw rod 21 sinks in the cylindrical shape ring 23, and the end of this ring is fixed on the upper surface of circular segment 11.

Screw rod 21 heads are carved with groove, after the section 8 with support component 9 tightens together with section 11, the metalwork of ring 23 pushed in this groove, thus tie down screw 21.

Use screw rod 21 and place the fastener 22 of

groove

20a, 20b and 20c to make this mounting means that circular segment 11 is attached on the tubular sections 8 us under any circumstance, in the time of for example will taking out or put into leakproof bracing or strutting arrangement 16, two sections of these of all desirable lower support parts 9 are even the thread end of screw rod 21 is killed in fastener 22.

In fact, can be from external process parts 22, thereby in corresponding recesses the end of cutting fastener and screw rod 21, the fastener of killing screw rod is extracted out from groove.

When reinstalling, need only change screw rod 21 and corresponding fastener 22.

This mounting means and patent FR-A-2, the mounting means of 642,217 said support components is identical.

In Fig. 3, can see especially clearly tension board 17 comprise three around tension board 17 axle center be mutually 120 ° of placements on lift pulling force screw rod 18, screw in and on plate 17, be carved with in the perforation of internal thread.

For each screw rod 18, plate 17 all has ring 24, and the end of this ring is fixed on the platelet 25.

When plate 17 was in a tension high position, as shown in Figure 6, screw head 18 sank in the ring 24.

Have groove on the screw head, when thermocouple pile 5 was in the tension high position of leakproof, the metalwork of ring 24 embedded wherein, guaranteed that screw rod 18 is locked.

The ring 23 of screw rod 21 and the ring 24 of screw rod 18 all have the end, a swallow-tail form side, embed diametrically respectively in the groove of respective shapes on circular segment 11 and the plate 17, making these supporting members can rotate 1/4th changes, thereby these rings can also reuse after once at the support component that unclamps and take off thermocouple pile.

The lower end of screw rod 18 tightly props up in the circular groove on the upper surface of the circular segment 11 of process support parts 9.

According to the size of screw rod 21 heads, have hole 26 on the tension board 17, when the tension board correspondence the release position of thermocouple pile 5 and is in low level, be used for guaranteeing plate 17, screw head 21 and encircle matching of 23 threes as shown in Figure 5.

Be carved with groove 22a on the front surface of fastener 22, be convenient to cut screw rod, under the situation of killing, disconnect screw rod and fastener.

From Fig. 5,5A and 6 as seen, be used for the leak-proof device 16 of thermocouple pile 5 in the supported parts 9 to be filled in the upper part of endoporus of tubular sections 8 of support component 9, it comprises a ring-type retainer 28, and its lower end 28a forms an annulus that supports thermocouple pile 5; And the O-ring seal of forming by some seals 29, these seals are positioned at the both sides of ring-type retainer 28, are inserted between the lower surface of the circular segment 11 that supports annulus 28a and support component 9.

The lower surface of the support annulus 28a of ring-type retainer 28 is a conical butt, matches with the Frusto-conical supporting surface 14 of thermocouple pile 5.These faces relative to each other, therefore when thermocouple pile 5 its end be subjected to pulling force on lift, thereby when the release position of Fig. 5 became the tightened position of Fig. 6, they abutted against together mutually.

Ring-type retainer 28 also comprises the cylindrical shape part 28b in the annular aperture 30 of the circular segment 11 that is embedded in support component 9 except the support annulus 28a of lower part, these annular aperture 30 openings are on the lower surface of circular segment 11.

Ring-type retainer 28 can be installed in the hole of support component 9 in the axial direction slidably round thermocouple pile 5, and the cylindrical shape part 28b on it plays a part to guide it.

O-ring seal 29 is made of some seals, these seals support on the annulus 28a and the thermocouple pile surface in contact vis-a-vis that surface and circular segment 11 lower surfaces of support component 9 between be out of shape by compression.

When the seal of O-ring seal 16 is compressed, be radially expanded, thereby between the endoporus of the surface of the surfaces externally and internally of the cylindrical shape part 28b of ring-type retainer and thermocouple pile 5 and tubular sections 8, form seal joints respectively.

O-ring seal 29 comprises together the seal and together the seal of being superimposed with each other placed of two cylindrical shape part 28b outside surfaces that lean against ring-type retainer 28 of being superimposed with each other of two cylindrical shape parts 28 that are arranged in the ring-type retainer.

And O-ring seal 29 also comprises two annular flat metal washers 32 that overlay on the seal, is used for surrounding thermocouple pile near the lower surface of living circular segment 11 and forms sealing.

Deform at thermocouple pile, its moving axially when being restricted of part in pipe adapter and support component, this part just can match with leakproof bracing or strutting arrangement 16, forms the splendid sealing of thermocouple pile no matter it moves axially apart from reducing.

In fact be easy to find out, the axial length of the surface in contact of the support annulus 28a that need only increase ring-type retainer 28 from the surface in contact of itself and O-ring seal 16 to it and thermocouple pile, as shown in Figure 6, thermocouple pile is that the required displacement of excellent sealing that makes seal form thermocouple pile by compression just can reduce.

During beginning,, make it make thermopair 5 reach most significant digit and form effective sealing of the seal of O-ring seal 29 at last act plate 17 in order to infer the size of ring-type retainer 28, can by tension board 17 measure thermocouple pile 5 possible move axially distance.

Take off two sections screw rods that link together 21 then support component 9.

If screw rod 21 is killed in corresponding fastener 22, can cut fastener 22 and screw rod, thereby from corresponding recesses, extract its lower end out and take off screw rod 21.

Then leakproof bracing or strutting arrangement 16 is put into the hole of tubular sections 8, the size of the ring-type retainer 28 of leakproof bracing or strutting arrangement is reserved in advance, then circular segment 11 is placed on the tubular sections 8 again.

The end of the cylindrical shape part 28b of ring-type retainer 28 embeds in the annular aperture 30 of circular segment 11.

Screw and tie down screw 21, turn screw rod 18 lifts tension board 17 then.

Thermocouple pile 5 pastes with the lower surface that supports annulus 28a tightly mutually by its supporting surface 14.The thermocouple pile 5 that is subjected to tension board 17 pulling force effects moves and upwards promotes ring-type retainer 28 together vertically in company with tension board 17, when thermocouple pile 5 mobile ends, makes the seal of O-ring seal be subjected to tightening up of axial compression.

The axial compression that is subjected to the inside and outside seal of cylindrical shape part 28b that is placed on ring-type retainer 28 causes and is radially expanded, thereby, on the one hand between the inside surface and thermocouple pile 5 outside surfaces of cylindrical shape part 28b; Between the hole of the outside surface of cylindrical shape part 28b and tubular sections 5, form seal joints on the other hand.

Be inserted in packing ring 32 between seal and circular segment 11 lower surfaces and guaranteed sealing between 9 two sections of the support components.

When thermocouple pile is in a leakproof high position shown in Figure 6, the metalwork 1 that encircles 24 is back in the groove of screw rod 18 heads, thus tie down screw 18.

Even therefore leak-proof device of the present invention also can provide effective sealing of thermocouple pile when possible the moving axially of thermocouple pile is restricted.

Can use the instrument that three screw rods on the tension board are applied identical clamp load torque to screw this three screw rods simultaneously, this instrument can be used for screwing two sections screw rods that are installed together with support component 9 equally.

Fig. 7 and Fig. 8 represent to be used for the another kind of embodiment of leak-proof device of the thermocouple pile 5 in the supported parts 9.

Label with Fig. 5 and the corresponding parts of Fig. 6 among Fig. 7 and Fig. 8 is constant, but puts in marks in its upper right corner, (apostrophe).

General leakproof bracing or strutting arrangement with label 16 ' sign comprise the ring-type retainer 28 that can be slidably mounted on vertically in tubular sections 8 ' hole ' with model be Helicoflex annular seal ring 29 '.

This type of soft seal comprises flat ring center part and two plane of bending lips, and each lip is made of crimping, inserts spiral spring in the crimping and is used for making the square section of ring to expand.The double-curved surface outer lip is embedded in the annular groove at tubular sections 8 ' end place, epipharynx be close to thermopair 5 ' outside surface.

A part of corresponding grooves 28 ' c of ring-type retainer 28 ' comprise shape and ring when thermocouple pile shown in Figure 8 is in tightened position, be used for being close to O-ring seal 29 ' the plane of bending epipharynx.

Ring-type retainer 28 ' upward also porose 28 ' d is used for the insertion instrument it is taken out from tubular sections 8 ' hole when opening the nuclear reactor vessel cap.

When thermocouple pile 5 ' when release position shown in Figure 7 enters tightened position shown in Figure 8, for the sealing size that forms thermocouple pile has been given the ring-type retainer 28 determined earlier ' upwards driven vertically by thermocouple pile, thus by its plane of bending shape groove 28 ' c and seal 29 ' epipharynx be close to.

In thermocouple pile tightened position shown in Figure 8, ring-type retainer 28 ' plane of bending groove 28 ' c make seal 29 ' epipharynx sealing be applied to thermocouple pile 5 ' on.

Seal 29 ' plane of bending outer lip by circular segment 11 ' be pressed into tubular sections 8 ' groove in.

Like this by ring-type retainer 28 ' just obtain thermocouple pile 5 ' excellent sealing.

At thermocouple pile 5 ' for example because distortion and its axial scope of activities when being restricted, useful size and thermocouple pile 5 ' the matched ring-type retainer of scope of activities put into support component 9 ' in, form and seal thereby still can reach tension.

Use device of the present invention, just can under any circumstance all form the intact sealing of thermocouple pile on tightened position.

The invention is not restricted to the foregoing description.

Therefore, it is contemplated that use and above-mentioned variform ring-type retainer and seal.

Leak-proof device of the present invention also can use in including other tube of thermocouple pile support component, and its structure and shape can be with above-mentioned different.

Particularly, support component can by interlink together in succession two sections constitute, its mode of connection can be with above-mentioned different.

For example, can embed method in the groove spaced-apart on the tubular sections periphery without fastener, and use the fastener that constitutes by two semi-rings, it is embedded in the annular groove of making on the whole periphery of tubular sections.

Above-mentioned patent FR-A-2,642,217 the embodiment in fact embodiment with present patent application are suitable fully, have same advantage.

The support component that forms although the present invention's use is linked together mutually by demountable two parts, therefore in the time will more gaining retainer, seem convenient especially, but it is contemplated that equally leak-proof device of the present invention is applied in the situation that the thermocouple pile support component is an incident with the ring-type retainer of different size.

At last, leak-proof device of the present invention can be applicable to any instrumentation column that passes the container block of nuclear reactor.

Claims

1, be used for instrumentation column (5), leak-proof device especially for the thermocouple pile that passes pressure (hydraulic) water nuclear reactor vessel cap (1), this thermocouple pile is positioned at tubular coupler (3), this pipe adapter (3) is fixed tightly in the perforation of cap (1) and reaches outside the container cap, this leak-proof device comprise one be attached to pipe adapter (3) stretch out outside the cap (1) on the end and be positioned at its on axially tubular support member (9) and be positioned at the puller system (17 that instrumentation column (5) stretches out an end place outside support component (9), 18), make that instrumentation column (5) can moving axially along pipe adapter (3), thereby make instrumentation column (5) support and near firmly being positioned at support component (9,9 ') interior leakproof bracing or strutting arrangement (16,16 '), it is characterized in that, be used for supporting instrumentation column (5,5 ') leak-proof device (16,16 ') comprising:

One ring-type retainer (28,28 '), shape and instrumentation column (5 are arranged on it, 5 ') the surface of contact that matches of the shape of supporting surface (14), this retainer can be installed in the hole of support component (9) with moving axially, therefore its surface of contact faces toward the supporting surface (14) of the interior instrumentation column of support component (9,9 ') (5,5 ') Face to face; And

At least one is inserted in retainer (28,28 ') be in contact with it face one side and support component (9 vis-a-vis, 9 ') the middle annular seal ring (29 of inside surface, 29 '), thereby at instrumentation column (5,5 ') end is subjected to pulling force and moves, under the responsive to axial force that is caused when living ring-type retainer (28,28 '), ring-type retainer (28,28 '), O-ring seal (29,29 ') and the interaction of support component (9,9 ') inside surface, thereby guarantee at instrumentation column (5,5 ') outside surface and support component (9,9 ') endoporus on form sealing.

2, by the described leak-proof device of claim 1, it is characterized in that support component (9,9 ') by first tubular sections (8,8 ') that is fixed tightly on pipe adapter (3) outer end, be connected first section (8,8 ') on second circular segment (11,11 ') and with first section and second section (8,8 '; 11,11 ') device (21,22) that is installed together constitutes.

3, by the described leak-proof device of claim 2, it is characterized in that first tubular sections (8,8 ') comprise at least one be positioned at groove on the outer peripheral face (20a, 20b, 20c), at least three perforation on being positioned at axially, groove on the outer peripheral face of these three perforation one (20a, 20b, 20c); Second circular segment (11,11 ') overlays on first section (8,8 '), only is positioned at the perforation on first section the perforation extended line; The hookup mechanism of first section and second section comprises that at least two are inserted in first section securing member (22) in (8,8 ') outer peripheral face groove, have on this securing member be positioned at first, second section (8,8 '; 11,11 ') hole of being carved with internal thread of perforation on the extended line; And be inserted in first section and the second section perforation that is being aligned with each other and screw in screw rod (21) in the fastener (22).

4, by the described leak-proof device of claim 3, it is characterized in that, the tubular sections (8 of support component (9), 8 ') (20a, 20b 20c) embed outer peripheral face groove (20a respectively with three to comprise three outer peripheral face grooves that are mutually hexagonal angle around the tubular sections axle center, 20b, fastener 20c) (22) has on this fastener with first section and second section three axial through bore to be in the hole of being carved with internal thread on the same straight line, is used for screwing in tightening up screw rod (21).

5, by the described leak-proof device of arbitrary claim in the claim 1 to 4, it is characterized in that, the ring-type retainer (28) of leakproof bracing or strutting arrangement (16), comprise that one supports annulus (28a), the surface of contact that has the surface of contact shape of shape and thermocouple pile (5) to match on it, this support annulus is installed in the hole of support component (8) movably; And one be embedded in the cylindrical shape part that plays guiding function in the annular aperture of second section (11) of support component (9), and above-mentioned annular aperture is coaxial with the center pit of support component; The sealing ring (29) of leakproof bracing or strutting arrangement (16) comprises the expandable seal in the expandable seal of the softness that the expandable seal of the softness that cylindrical shape part (28b) that at least one centers on retainer (28) is placed and the cylindrical shape part (28b) that at least one is placed on retainer (28) are placed and the cylindrical shape part (28b) that at least one is placed on retainer (28); They be close to support annulus (28a) with thermocouple pile (5) contact-making surface one side vis-a-vis on, thereby when thermocouple pile (5) is moved by axial tension between the inner hole wall of thermocouple pile (r) and support component (9) formation seal.

6,, it is characterized in that O-ring seal (29) also comprises two flat ring spacers (32) between the lower support face that is inserted in seal and support component (9) by the described leak-proof device of claim 5.

7, by the described leak-proof device of arbitrary claim in the claim 1 to 4, it is characterized in that, annular seal ring (29 ') comprises plane of bending epipharynx and the plane of bending outer lip that is linked together by flat annulus, the plane of bending epipharynx is close to round the outside surface placement of instrumentation column (5) and with it, and the plane of bending outer lip is embedded in the interior groove of support component (9 ') hermetically; Plane of bending shape groove is arranged on the tubulose retainer (28 '), be used for partly being close to the plane of bending epipharynx of O-ring seal (29 ').

By the described leak-proof device of arbitrary claim in the claim 1 to 7, it is characterized in that 8, the axial shape of ring-type retainer (28,28 ') and size can mobile scopes in pipe adapter (3) and support component (9) according to thermocouple pile and decide.

9, by the described leak-proof device of arbitrary claim in the claim 1 to 8, it is characterized in that, the puller system of thermocouple pile (5) end is made of last act plate (17), should go up to lift on the plate and have the perforation of being carved with internal thread, screw rod (18) passes wherein and is against on the end face of support component (9), borrow rib center pit and instrumentation column (5) to go up dismountable pulling force ring (19), plate (17) is connected to instrumentation column (5) and stretches out on the end outside support component (9), and the diameter of this pulling force ring is bigger than the center pit of plate (17).

10, by the described leak-proof device of claim 9, it is characterized in that screw rod (18) head sinks in ring (24), this ring has deformable wall, its bottom surface is fixed on the upper surface of plate (17), guarantees that notched screw rod is locked and does not rotate thereby go up the act back at plate (17).

11, by the described leak-proof device of claim 10, it is characterized in that each ring (24) comprises that one is fixed on the bottom surface on the supporting member (25), this supporting member is placed on plate (17) on two different directions round the axle center of encircling (24) at least.