CN204694357U - Under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device - Google Patents

Under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device Download PDF

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Publication number
CN204694357U
CN204694357U CN201520462733.7U CN201520462733U CN204694357U CN 204694357 U CN204694357 U CN 204694357U CN 201520462733 U CN201520462733 U CN 201520462733U CN 204694357 U CN204694357 U CN 204694357U
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China
Prior art keywords
thermopair
turbogrid plates
heating tube
fixing device
moving condition
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CN201520462733.7U
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Chinese (zh)
Inventor
周磊
闫晓
李轶
昝元锋
黄彦平
陈炳德
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Nuclear Power Institute of China
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Nuclear Power Institute of China
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Abstract

Under the utility model discloses moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device, comprise brace summer (2) and thermopair fixed-grid (3), wherein, thermopair fixed-grid (3) comprises the Turbogrid plates of closed frame structure shape and to be located in Turbogrid plates and the silk screen be connected with Turbogrid plates inwall.The quantity of brace summer (2) is two, and two brace summers (2) all have one end to be connected on Turbogrid plates lateral wall, and the position that Turbogrid plates connect two brace summers (2) lays respectively at its relative both sides.The utility model one-piece construction is simple, be convenient to realize, cost is low, during the utility model application, wall temperature monitoring thermopair is through the mesh of silk screen, silk screen can effectively support thermopair and fix, so, can avoid the impact because of motion additional force that thermopair is come off during the utility model application to cause experiment to be interrupted or test causing danger.

Description

Under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device
Technical field
The utility model relates to reactor thermo-hydraulics experiment aid, and specifically under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device.
Background technology
Cluster fuel assembly is widely used in nuclear power station and Nuclear Power System, in order to measure the coefficient of friction resistance of assembly, heat transfer coefficient, screen work characteristic, subchannel hand over mixed characteristic to meet design and peace examines requirement, relevant experimental study must be carried out, corresponding experiment body and cluster experiment body.Overwhelming majority Experiment of Thermophysics all needs the wall temperature of monitoring cluster heating tube, and the wall temperature of cluster heating tube monitored by conventional thermopair at present, and wherein thermopair is primarily of front end, screen layer and lead-in wire composition, thermopair termination and experiment body spot welding during experiment.
Flow vibration may cause fuel assembly to be in high frequency motion state, the special reactor such as space based reactor, naval reactor may be among non-uniform movement by the impact of environmental factor, these motions will introduce non-inertia additional force, thus may make a difference to the hot-working hydraulic characteristic of fuel assembly.Under motion state, due to the impact of non-inertia additional force, wall temperature monitoring thermopair very easily comes off and loses monitoring function, easy initiation potential.Under high temperature and pressure experiment condition, in order to process the wall temperature monitoring thermopair come off, will have to stop experiment, and starting very long decrease temperature and pressure process, thus make experiment be difficult to normally carry out.
Utility model content
the object of the invention is to overcome the deficiencies in the prior art, under providing a kind of moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device, it can provide support heating tube wall temperature monitoring thermopair of cluster passage experiment and fix, thus can avoid the impact because of motion additional force that thermopair is come off causing experiment to interrupt or test causing danger.
The present invention solves the problem and is achieved through the following technical solutions: under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device, comprise brace summer and thermopair fixed-grid, described thermopair fixed-grid comprises the Turbogrid plates of closed frame structure shape and to be located in Turbogrid plates and the silk screen be connected with Turbogrid plates inwall; The quantity of described brace summer is two, and two brace summers all have one end to be connected on Turbogrid plates lateral wall, and the position that Turbogrid plates connect two brace summers lays respectively at its relative both sides.During the utility model application, two brace summers are fixed on the top of experiment body, and make thermopair fixed-grid keep being horizontally disposed with, make thermopair pass the mesh of silk screen and its front end is welded on experiment body inwall.During the utility model application, in order to make thermopair fixing more firm, binding strap also can be adopted to be fixed in thermopair fixed-grid by thermopair.
Further, described brace summer comprises support bar, and described support bar bending forms horizontal segment and vertical section, and described thermopair fixed-grid is horizontally disposed with, and described brace summer is connected on Turbogrid plates especially by the free end of support bar horizontal segment.So, during the utility model application, the free end of the vertical section of two brace summers is fixed on the top of experiment body, is convenient to thermopair fixed-grid is horizontally disposed with and with experiment body top, there is certain distance.
Further, under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device, also comprise two set nuts vertically arranged, the compressing tablet that the free end that described brace summer also comprises section vertical with support bar is connected, the compressing tablet of two brace summers to embed respectively in two set nuts and forms interference fit with set nut.Brace summer 2 in the utility model compresses compressing tablet by set nut and is formed fixing, can be equipped with bolt during the utility model application in experiment body, is coordinated by set nut realize of the present utility model fixing with bolt.
In order to ensure the structural strength of support bar corner, further, the chamfering of the horizontal segment section vertical with it of described support bar is circular arc chamfering.
Further, described support bar is that pipe or cylindrical bars bending are formed, and the radius of its bending region is 2 ~ 3 times of himself radius.The radius of bending region is set to 2 ~ 3 times of support bar self radius by the utility model, can offset the build-up tolerance of set nut, is more convenient for installing when the utility model is applied.
Convenient in order to draw materials, further, described support bar adopts reinforcing rod or pressure guiding pipe to bend and forms.
Further, described silk screen comprises rib and multiple thermopair retainer plate, multiple thermopair retainer plate by rectangular arrangement, between the thermopair retainer plate that any one thermopair retainer plate is adjacent and the thermopair retainer plate of edge be all connected by rib with between Turbogrid plates.
Further, described Turbogrid plates comprise four fins and four pieces of backboards, and four pieces of backboards are spliced to form closed frame shaped structure, and four fins are vertically connected on four pieces of backboards one to one, and four fins form closed frame shaped structure; Described brace summer is specifically connected on backboard, and the rib be connected on Turbogrid plates is specifically connected on fin.The object arranging fin in the utility model is the welding being convenient to silk screen, and the effect of backboard is formed silk screen to support.
In sum, the utility model has following beneficial effect: (1) the utility model one-piece construction is simple, and be convenient to implement, cost is low; During the utility model application, wall temperature monitoring thermopair passes silk screen and is welded on heating tube inwall by its head, jointly support is formed to thermopair by thermopair fixed-grid and pad, so, the utility model also can be monitored thermopair to wall temperature and effectively supported and fix under moving condition, and then can avoid the impact because of motion additional force that thermopair is come off causing experiment to interrupt or experiment is caused danger.
(2) generally many heat extractions galvanic couple is arranged in the axial direction when the heating tube wall temperature monitoring of testing cluster passage, often arrange transversely arrange several, during the utility model application, every root thermopair may correspond to a mesh through silk screen, so, wall temperature can be made to monitor the arrangement specification of thermopair neatly, can avoid thermocouple tip that touching occurs and form short circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment;
Fig. 2 is the structural representation of brace summer in the utility model specific embodiment;
Fig. 3 is the structural representation of thermopair fixed-grid in the utility model specific embodiment.
Name in accompanying drawing corresponding to Reference numeral is called: 1, set nut, 2, brace summer, 201, support bar, 202, compressing tablet, 3, thermopair fixed-grid, 301, rib, 302, thermopair retainer plate, 303, fin, 304, backboard.
Embodiment
Below in conjunction with embodiment and accompanying drawing, detailed description is further done to the utility model, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device, comprise brace summer 2 and thermopair fixed-grid 3, wherein, thermopair fixed-grid 3 comprises Turbogrid plates and silk screen, Turbogrid plates are closed frame structure shape structure, and silk screen to be located in Turbogrid plates and to be connected with Turbogrid plates inwall.In the present embodiment, the quantity of brace summer 2 is two, and two brace summers 2 all have one end to be connected on Turbogrid plates lateral wall, and the position that Turbogrid plates connect two brace summers 2 lays respectively at its relative both sides.The mesh aperture of silk screen and the diameter matches of thermopair front end in the present embodiment, namely make the aperture of the mesh of silk screen be slightly less than the diameter of thermopair front end, to provide certain clamping force when specifically arranging.
During the present embodiment application, brace summer 2 is fixed on the top of experiment body, and makes thermopair fixed-grid 3 keep being horizontally disposed with, thermopair makes its front end be welded on heating tube inwall through after the mesh of silk screen.
Embodiment 2:
The present embodiment has made following restriction further on the basis of embodiment 1: the brace summer 2 of the present embodiment comprises support bar 201, wherein, support bar 201 bending forms horizontal segment and vertical section, thermopair fixed-grid 3 is horizontally disposed with, and brace summer 2 is connected on Turbogrid plates especially by the free end of support bar 201 horizontal segment.Free end and the free end of its vertical section of support bar 201 horizontal segment are the other end of its relative bending end, in the present embodiment, the length of the vertical section of support bar 201 approximates the front end length of thermopair, when the present embodiment is applied, the free end of the vertical section of support bar 201 is connected to experiment body top.
Embodiment 3:
As shown in Figure 2, the present embodiment has made following restriction further on the basis of embodiment 2: the present embodiment also comprises two set nuts 1 vertically arranged, it is interior and form interference fit with set nut 1 that the compressing tablet that brace summer 2 also comprises compressing tablet 202, two brace summers 2 is connected with the free end of support bar 201 vertical section embeds two set nuts 1 respectively.So, during the present embodiment application, can the bolt mated with set nut 1 being set at experiment body top, by being set on bolt by set nut 1, realizing the fixing of the present embodiment.
Embodiment 4:
In order to ensure the structural strength of support bar 201, the present embodiment has made following restriction further on the basis of embodiment 3: the chamfering of the horizontal segment section vertical with it of the support bar 201 of the present embodiment is circular arc chamfering, support bar 201 is that pipe or cylindrical bars bending are formed, and the radius of its bending region is 2 ~ 3 times of himself radius.Convenient in order to draw materials, the present embodiment is when embody rule, and support bar 201 preferably adopts reinforcing rod or pressure guiding pipe to bend and forms.
Embodiment 5:
As shown in Figure 3, the basis of the present embodiment any one embodiment in embodiment 1 ~ embodiment 4 is made following restriction further: the silk screen of the present embodiment comprises rib 301 and multiple thermopair retainer plate 302, rib 301 and thermopair retainer plate 302 all adopt stainless steel wire to make, multiple thermopair retainer plate 302 by rectangular arrangement, between the thermopair retainer plate 302 that any one thermopair retainer plate 302 is adjacent and the thermopair retainer plate 302 of edge be all connected by rib 301 with between Turbogrid plates.
Embodiment 6:
Be fixed in thermopair fixed-grid 3 for the ease of the fixing of silk screen and brace summer 2, the present embodiment has made following restriction further on the basis of embodiment 5: the Turbogrid plates of the present embodiment comprise four fins 303 and four pieces of backboards 304, wherein, four pieces of backboards 304 are spliced to form closed frame shaped structure, and four fins 303 are vertically connected on one to one after on four pieces of backboards 304 and also form closed frame shaped structure.The brace summer 2 of the present embodiment is specifically connected on backboard 304, and the rib 301 be connected on Turbogrid plates is specifically connected on fin 303.
Above content is the further description done the utility model in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.

Claims (8)

1. under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device, it is characterized in that, comprise brace summer (2) and thermopair fixed-grid (3), described thermopair fixed-grid (3) comprises the Turbogrid plates of closed frame structure shape and to be located in Turbogrid plates and the silk screen be connected with Turbogrid plates inwall; The quantity of described brace summer (2) is two, and two brace summers (2) all have one end to be connected on Turbogrid plates lateral wall, and the position that Turbogrid plates connect two brace summers (2) lays respectively at its relative both sides.
2. under moving condition according to claim 1, cluster experiment body heating tube temperature detects thermocouple fixing device, it is characterized in that, described brace summer (2) comprises support bar (201), described support bar (201) bending forms horizontal segment and vertical section, described thermopair fixed-grid (3) is horizontally disposed with, and described brace summer (2) is connected on Turbogrid plates especially by the free end of support bar (201) horizontal segment.
3. under moving condition according to claim 2, cluster experiment body heating tube temperature detects thermocouple fixing device, it is characterized in that, also comprise two set nuts (1) vertically arranged, described brace summer (2) also comprises the compressing tablet (202) is connected with the free end of support bar (201) vertical section, and it is interior and form interference fit with set nut (1) that the compressing tablet of two brace summers (2) embeds two set nuts (1) respectively.
4. under moving condition according to claim 3, cluster experiment body heating tube temperature detects thermocouple fixing device, and it is characterized in that, the chamfering of the horizontal segment section vertical with it of described support bar (201) is circular arc chamfering.
5. under moving condition according to claim 4, cluster experiment body heating tube temperature detects thermocouple fixing device, it is characterized in that, described support bar (201) is pipe or cylindrical bars bending formation, and the radius of its bending region is 2 ~ 3 times of himself radius.
6. under moving condition according to claim 5, cluster experiment body heating tube temperature detects thermocouple fixing device, it is characterized in that, described support bar (201) adopts reinforcing rod or pressure guiding pipe to bend and forms.
7. detect thermocouple fixing device according to cluster experiment body heating tube temperature under the moving condition in claim 1 ~ 6 described in any one, it is characterized in that, described silk screen comprises rib (301) and multiple thermopair retainer plate (302), multiple thermopair retainer plate (302) by rectangular arrangement, between the thermopair retainer plate (302) that any one thermopair retainer plate (302) is adjacent and the thermopair retainer plate (302) of edge be all connected by rib (301) with between Turbogrid plates.
8. under moving condition according to claim 7, cluster experiment body heating tube temperature detects thermocouple fixing device, it is characterized in that, described Turbogrid plates comprise four fins (303) and four pieces of backboards (304), four pieces of backboards (304) are spliced to form closed frame shaped structure, four fins (303) are vertically connected on four pieces of backboards (304) one to one, and four fins (303) form closed frame shaped structure; Described brace summer (2) is specifically connected on backboard (304), and the rib (301) be connected on Turbogrid plates is specifically connected on fin (303).
CN201520462733.7U 2015-07-01 2015-07-01 Under moving condition, cluster experiment body heating tube temperature detects thermocouple fixing device Active CN204694357U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106653115A (en) * 2017-01-09 2017-05-10 中国核动力研究设计院 Rod bundle channel pressure difference measurement assembly under movement condition
CN106996835A (en) * 2017-04-26 2017-08-01 上海海洋大学 A kind of thermoelectric couple fixed rest
CN107314827A (en) * 2016-04-27 2017-11-03 国核华清(北京)核电技术研发中心有限公司 The method that thermocouple is installed on the inwall of the housing of elevated temperature vessel
CN108917961A (en) * 2018-07-27 2018-11-30 中国核动力研究设计院 A kind of cluster fuel assembly multiple spot wall temperature measurement device under moving condition
CN109238490A (en) * 2018-09-13 2019-01-18 中国核动力研究设计院 Small-diameter rods tread assembly thermometry under a kind of moving condition

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314827A (en) * 2016-04-27 2017-11-03 国核华清(北京)核电技术研发中心有限公司 The method that thermocouple is installed on the inwall of the housing of elevated temperature vessel
CN106653115A (en) * 2017-01-09 2017-05-10 中国核动力研究设计院 Rod bundle channel pressure difference measurement assembly under movement condition
CN106653115B (en) * 2017-01-09 2018-01-02 中国核动力研究设计院 A kind of cluster passage differential pressure measurement component under moving condition
CN106996835A (en) * 2017-04-26 2017-08-01 上海海洋大学 A kind of thermoelectric couple fixed rest
CN108917961A (en) * 2018-07-27 2018-11-30 中国核动力研究设计院 A kind of cluster fuel assembly multiple spot wall temperature measurement device under moving condition
CN109238490A (en) * 2018-09-13 2019-01-18 中国核动力研究设计院 Small-diameter rods tread assembly thermometry under a kind of moving condition

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