CN206990114U - Thermocouple catheter blockage structure - Google Patents

Abstract

It the utility model is related to a kind of thermocouple catheter blockage structure, including bott stick, elasticity blocking, regulating part and connecting rod, bott stick includes first end and the second end being oppositely arranged, first end protrusion is provided with limition orientation portion, regulating part is on the second end, connecting rod is detachably connected with the second end, elasticity, which blocks, is sheathed on that bott stick is outer and be connected between limition orientation portion and regulating part, regulating part can along bott stick axial movement and coordinate extruding elasticity to block to change the outside dimension of elasticity blocking with limition orientation portion.After connecting rod is connected with bott stick in above-mentioned thermocouple catheter blockage structure suitable opening position in thermocouple conduit is inserted from one end provided with limition orientation portion, then connecting rod separates with bott stick and leaves conduit, thermocouple catheter blockage structure can separate the machining section of thermocouple conduit, prevent that machining caused debris enters reactor core internals, avoids producing potential safety hazard to unit.

Description

Thermocouple catheter blockage structure

Technical field

Nuclear power plant's reactor thermocouple is the utility model is related to, more particularly to thermocouple catheter blockage structure.

Background technology

Nuclear power plant's reactor thermocouple is mainly used in measuring reactor core temperature, and thermocouple conduit is as the logical of thermocouple Road, with thermocouple catheter block together as primary Ioops pressure boundary, therefore thermocouple conduit and its catheter block are related to nuclear power plant one The integrality on circuit pressure border is most important to the safety of nuclear power plant's unit.

Nuclear power plant is carrying out the water pressure test to primary Ioops, when the water pressure test is in descending 154bar.g pressure platforms, inspection Look into and find that RIC system E13 positions thermocouple pile upper surface, K13 surrounding catheters have a small amount of boron crystallization, it is necessary to extract K13 conduits out Interior thermocouple, and K13 conduits are cut off, reaming, sealing reaming are bored to remaining conduit, finally by other conduit envelopes in seal receptacle Within primary Ioops border, ensure the integrality of primary Ioops pressure boundary.

But the direct UNICOM's reactor core internals of thermocouple catheter interior, if in thermocouple conduit cutting drilling etc. Machine during adding the debris such as caused iron filings be not added with protect, then caused debris will pass through thermocouple conduit enter reaction Heap in-pile component, even into reactor core, this can bring huge potential safety hazard to unit safety operation.

Utility model content

Based on this, it is necessary to provide one kind and avoid debris caused by the machining of thermocouple conduit from giving nuclear power plant's reactor unit Bring the thermocouple catheter blockage structure of potential safety hazard.

A kind of thermocouple catheter blockage structure, including bott stick, elasticity blocking, regulating part and connecting rod, the bott stick Including the first end being oppositely arranged and the second end, the first end protrusion is provided with limition orientation portion, and the regulating part is located at described On second end, the connecting rod is detachably connected with second end, and the elasticity, which blocks, to be sheathed on outside the bott stick and support Be connected between the limition orientation portion and the regulating part, the regulating part can along the bott stick axial movement and with it is described Limition orientation portion coordinates the extruding elasticity to block to change the outside dimension that the elasticity blocks.

Elasticity in above-mentioned thermocouple catheter blockage structure, which blocks, to be connected between regulating part and limition orientation portion, regulating part Along bott stick axial movement when extrudable elasticity block the external diameter that blocks elasticity and change, and connecting rod and bott stick Suitable opening position in thermocouple conduit is inserted from one end provided with limition orientation portion after connection, then connecting rod and bott stick point From and leave conduit, thermocouple catheter blockage structure can separate the machining section of thermocouple conduit, prevent caused by machining Debris enters reactor core internals, avoids producing potential safety hazard to unit, and may be inserted into connection after machining Bar is extracted elasticity after being connected with bott stick and blocked, and is convenient for follow-up conduit processing.

In one of the embodiments, it is silicagel column that the elasticity, which blocks, is offered on the silicagel column and the blocking The mounting hole that bar coordinates, and the free external diameter when silicagel column is not squeezed is less than the aperture for treating plugging.

In one of the embodiments, the regulating part is located at by thread bush outside second end of the bott stick.

In one of the embodiments, the connecting rod and second end of the bott stick are detachably connected by screw thread Connect.

In one of the embodiments, second end is provided with external screw thread, and the connecting rod corresponds to the external screw thread and opened Provided with the internal thread hole coaxial with second end.

In one of the embodiments, the limition orientation portion is integrally formed with the bott stick by stainless steel material.

In one of the embodiments, a diameter of 2mm of the bott stick.

Brief description of the drawings

Fig. 1 is the structural representation of thermocouple catheter blockage structure in the embodiment of the utility model one；

Fig. 2 is the structural representation of connecting rod in thermocouple catheter blockage structure shown in Fig. 1；

Fig. 3 is the installation procedure figure of thermocouple catheter blockage structure shown in Fig. 1；

Fig. 4 is the dismounting flow chart of thermocouple catheter blockage structure shown in Fig. 1.

Embodiment

For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings State.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can come in fact in many different forms It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model Open the understanding more thorough and comprehensive of content.

It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include The arbitrary and all combination of one or more related Listed Items.

As shown in figure 1, the thermocouple catheter blockage structure 100 in the embodiment of the utility model one includes bott stick 10, bullet Property block 30, regulating part 50 and connecting rod 70, bott stick 10 includes the end 14 of first end 12 and second being oppositely arranged, first end 12 protrusions are provided with limition orientation portion 121, and on the second end 14, connecting rod 70 is detachably connected regulating part 50 with the second end 14, Elasticity blocks 30, and to be sheathed on bott stick 10 outer and be connected between limition orientation portion 12 and regulating part 50, and regulating part 50 can be along stifled Moving axially and coordinating with limition orientation portion 12 for stopper rod 10 extrudes elasticity blocking 30 with the outside dimension of change elasticity blocking 30.

Elasticity in above-mentioned thermocouple catheter blockage structure 100 block 30 be connected to regulating part 50 and limition orientation portion 12 it Between, extrudable elasticity, which blocks 30 and elasticity is blocked 30 external diameters, during axial movement of the regulating part 50 along bott stick 10 changes, And it is suitable in thermocouple conduit that connecting rod 70 is inserted after being connected with bott stick 10 from the first end 12 provided with limition orientation portion 12 Opening position, then connecting rod 70 separated with bott stick 10 and leave conduit, the thermocouple catheter blockage so filled in conduit Structure 100 can separate the machining section of conduit, prevent that machining caused debris enters reactor core internals, avoids to machine Group produces potential safety hazard, and may be inserted into after connecting rod 70 is connected with the second end 14 of bott stick 10 and pull out after machining Go out thermocouple catheter blockage structure 100, be convenient for follow-up conduit processing.

Further, limition orientation portion 121 is arranged at the hemispherical block of first end 12 for protrusion, and the diameter of hemispherical block is big In the diameter of bott stick 10,30 can be blocked with elasticity and abutted, block 30 position vertically for limiting elasticity, simultaneously circle Cambered surface 121 plays guide effect when blocking 100 insertion conduit, is more convenient for blocking 100 insertion conduits.

Specifically, limition orientation portion 12 is integrally formed with bott stick 10 by stainless steel material, and service life is longer.

In one embodiment, regulating part 50 is connected by screw thread with the second end 14 of bott stick 10, is so rotating tune Extrudable elasticity blocks 30 when saving part 30.Squeezed it is to be appreciated that regulating part 50 can be also connected with the second end 14 by other means Compression elasticity blocks 30, does not limit herein.

In one embodiment, connecting rod 70 and the second end 14 of bott stick 10 are detachably connected by screw thread, be easy to by Bott stick 10, elasticity block 30 etc. and are put into or take out thermocouple conduit.It is to be appreciated that connecting rod 70 can also pass through its other party Formula is detachably connected with the second end 14, is not limited herein.

Further, the second end 14 of bott stick 10 is provided with external screw thread, and the corresponding external screw thread of connecting rod 70 offers and second 14 coaxial internal thread holes are held, so ensure connecting rod 70 and the alignment of bott stick 10, can more accurate, convenient dismounting With installation connecting rod 70.

Also, regulating part 50 can share the external screw thread at the second end 14 with connecting rod 70, regulating part 50 is sheathed on outer all the time Outside screw thread, connecting rod 70 is optionally connected with corresponding external screw thread, and realization is detachably connected, and can so reduce bott stick 10 Manufacturing procedure, only need to process one section of general external screw thread, realize the connection with two accessories.

In one embodiment, it is silicagel column that elasticity, which blocks 30, and the installation coordinated with bott stick 10 is offered on silicagel column Hole, it is sheathed on by mounting hole silicagel column outside bott stick 10, and free external diameter when silicagel column is not squeezed is less than and treats plugging Aperture, in order to carry out accommodation to the external diameter of silicagel column subsequently through regulating part 50.

Specifically, the working environment residing for thermocouple pile is narrow and small, the spacing very little of thermocouple pile and three side coamings, and heat The thermocouple conduit arranged on galvanic couple post is intensive, and thermocouple pile diameter is about 65mm, arranges 13 conduits thereon, between conduit Away from about 3~4mm, thermocouple catheter outer diameter Φ 8mm, 4 sections of tube expansions of catheter interior point, catheter diameter Φ 4.8mm, tube expansion section internal diameter Maximum Φ 5.3mm, the internal diameter very little of thermocouple conduit, so the diameter of bott stick 10 is set into 2mm, elasticity blocks to be opened up on 30 Corresponding mounting hole, such thermocouple catheter blockage structure 100 go for the thermocouple conduit of internal diameter very little.

Thermocouple catheter blockage structure 100 it is specifically used during, it is necessary first to by plug (including bott stick 10, Elasticity blocking 30 and regulating part 50) fill in conduit, isolate the machining section of conduit, prevent that machining caused impurity enters core The in-pile component of reaction.As shown in figure 3, in specific installed plug, first check for plug, elastic block up is adjusted by regulating part 50 The external diameter of plug 30, connecting rod 70 connect bott stick 10 and plug are put into specified location, and last connecting rod 70 screws out bott stick 10, take out connecting rod 70.

Need to take out plug after conduit is machined, avoid plug from influenceing the process of subsequent treatment conduit, also prevent Only plug enters reactor core internals.As shown in figure 4, when specifically taking out plug, connecting rod 70 is stretched into conduit to plug Place, and bott stick 10 is screwed in, plug is pulled out into conduit with connecting rod 70, finally checks plug, the dismantling connection bar from plug is complete Into the use of whole thermocouple catheter blockage structure 100.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope that this specification is recorded all is considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (8)

1. a kind of thermocouple catheter blockage structure, it is characterised in that including bott stick, elasticity blocking, regulating part and connecting rod, institute First end and the second end that bott stick includes being oppositely arranged are stated, the first end protrusion is provided with limition orientation portion, the regulating part On second end, the connecting rod is detachably connected with second end, and the elasticity, which blocks, is sheathed on the blocking Bar is outer and is connected between the limition orientation portion and the regulating part, and the regulating part can be along the axial movement of the bott stick And the extruding elasticity is coordinated to block to change the outside dimension that the elasticity blocks with the limition orientation portion.

2. thermocouple catheter blockage structure according to claim 1, it is characterised in that the limition orientation portion sets for protrusion The hemispherical block of the first end is placed in, the diameter of the hemispherical block is more than the diameter of the bott stick.

3. the thermocouple catheter blockage structure according to claim 1-2 any one, it is characterised in that the elasticity blocks For silicagel column, the mounting hole coordinated with the bott stick is offered on the silicagel column, and when the silicagel column is not squeezed Free external diameter is less than the aperture for treating plugging.

4. thermocouple catheter blockage structure according to claim 1, it is characterised in that the regulating part is arranged by screw thread In outside second end of the bott stick.

5. thermocouple catheter blockage structure according to claim 1, it is characterised in that the connecting rod and the bott stick Second end be detachably connected by screw thread.

6. thermocouple catheter blockage structure according to claim 5, it is characterised in that second end is provided with outer spiral shell Line, the connecting rod correspond to the external screw thread and offer the internal thread hole coaxial with second end.

7. thermocouple catheter blockage structure according to claim 1, it is characterised in that the limition orientation portion is blocked up with described Stopper rod is integrally formed by stainless steel material.

8. thermocouple catheter blockage structure according to claim 1, it is characterised in that a diameter of 2mm of the bott stick.