CN201902757U

CN201902757U - Fast reactor sodium loop pipe heating device

Info

Publication number: CN201902757U
Application number: CN2010206820783U
Authority: CN
Inventors: 况金星; 向发钧
Original assignee: CHONGQING JINHONG ELECTRICAL ENGINEERING Co Ltd
Current assignee: CHONGQING JINHONG ELECTRICAL ENGINEERING Co Ltd
Priority date: 2010-12-27
Filing date: 2010-12-27
Publication date: 2011-07-20
Anticipated expiration: 2020-12-27

Abstract

The utility model discloses a fast reactor sodium loop pipe heating device. Armored electric wires are laid on the pipe to be heated, and the armored electric wires cling closely to the pipe wall of the pipe to be heated; the electrodes at both ends of each armored electric wire are connected to the positive and the negative upright poles of a power supply respectively. The heating device of the utility model directly heats a pipe through the armored electric wires, which reduces the heat loss during the conducting process. The life of the armored electric wires can also improve significantly as compared with other ordinary electric heating elements because of better adaptability to temperature; the armored electric wires also have good work reliability, and the safety of the heating device is also remarkably improved.

Description

Fast reactor sodium loop pipeline heating equipment

Technical field

The utility model relates to a kind of heating equipment of pipeline loop, and especially a kind of pipeline heating equipment that is used for the fast reactor sodium loop belongs to the electrical engineering technical field.

Background technique

The 4th generation nuclear power station mainly be to adopt fast reactor (abbreviation fast reactor) technology, China has entered the test operational phase to the construction of fast reactor at present, in the construction of fast reactor, the heating of sodium loop pipeline is an important technology problem wherein.What in the world the pipeline heating of fast reactor sodium loop is generally adopted at present is that lectrothermal alloy wire is directly worn porcelain tube, then porcelain tube is twined or being layered on the sodium loop pipeline of balance heated.But there is following defective in this mode of heating: 1, heat conduction efficiency is relatively poor, and porcelain tube is heated inhomogeneous, and this temperature that causes passing to pipeline is also inhomogeneous; 2, it is relatively poor that lectrothermal alloy wire is worn the intensity of porcelain tube, and porcelain tube is easily broken, causes short circuit easily, makes that the Security of heating equipment is relatively poor; 3, lectrothermal alloy wire is exposed at outward in the air, and is oxidized easily, thereby influenced the working life of heating equipment.

The model utility content

At above-mentioned deficiency of the prior art, the purpose of this utility model is to provide the sodium loop pipeline heating equipment of a kind of heat transfer efficiency height, good reliability.

The technical solution of the utility model: fast reactor sodium loop pipeline heating equipment, it is characterized in that, lay the armouring electric heating wire on heated pipeline, described armouring electric heating wire is close on the tube wall that is heated pipeline, and the electrode at armouring electric heating wire two ends is connected with the positive and negative electrode of power supply respectively.

Heating equipment of the present utility model directly heats pipeline by the armouring electric heating wire, and its heat loses little in conductive process, and the temperature adaptive capacity of armouring silk is stronger, and the life-span also is significantly improved than the common electrical heating element.

With respect to prior art, the utlity model has following beneficial effect:

1, heat transfer efficiency obviously improves: heating equipment of the present utility model has adopted the armouring electric heating wire to replace traditional electrical heating elements, the armouring electric heating wire directly is attached to carries out transmission of heat on the pipeline, because armouring electric heating wire more compact structure, have heating efficiency height, characteristic that heat loss is little, therefore the heat that absorbs of pipeline increases and warming velocity is also obviously accelerated, and makes medium in the pipeline to be rapidly heated and reaches technological requirement;

2, good reliability: because armouring electric heating wire structural strength is good, surface insulation and be not easy damaged electric leakage also can keep stable working state even be subjected to external compression;

3, Security is good: because the electric heating wire in the armouring electric heating wire is wrapped up fully, electric heating wire can not contact oxidized because of exposing with air.

Description of drawings

Fig. 1 is a kind of user mode figure of the utility model fast reactor sodium loop pipeline heating equipment;

Fig. 2 is the another kind of user mode figure of the utility model fast reactor sodium loop pipeline heating equipment.

Among the figure, 1-pipeline, 2-armouring electric heating wire, 3-electrode.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Embodiment 1: as shown in Figure 1, a kind of fast reactor sodium loop pipeline heating equipment, be to lay armouring electric heating wire 2 on heated pipeline 1, described armouring electric heating wire 2 is helical and is wrapped on heated pipeline 1 outer wall that the electrode at armouring electric heating wire 2 two ends is connected with the positive and negative electrode of power supply respectively.

Embodiment 2: as shown in Figure 2, be the another kind of structure of the utility model fast reactor sodium loop pipeline heating equipment, described armouring electric heating wire 2 is parallel to the axial setting that is heated pipeline 1 and forms at least two round loops; Diameter difference according to pipeline, the feeder number that armouring electric heating wire 2 is laid is also different, and for reaching better heat-transfer effect, the formed round loop of armouring electric heating wire is just many more on the big more pipeline of diameter, its round loop is being heated evenly distribution on the pipeline, thereby it is more even that pipeline is heated.

In the utility model; described armouring electric heating wire is existing heating element; it is that outermost surface at lectrothermal alloy wire installs the layer of metal protecting jacket additional; be filled with insulating material between lectrothermal alloy wire and the metal protection protector; can prevent that inner electric heating wire is damaged when transportation or installation, and its caliber is thinner with respect to the common electrical thermoelement, inner electric heating wire parcel is tightr; it is faster to transmit heat speed, and heat loss is also littler.

Need to prove; above embodiment is only in order to illustrate the technical solution of the utility model but not the restriction technologies scheme; although the claimant has done detailed description with reference to preferred embodiment to the utility model; those of ordinary skill in the art is to be understood that; those are made amendment to technical solutions of the utility model or are equal to replacement; and do not break away from the aim and the scope of the technical program, all should be encompassed in the middle of the claimed scope of the utility model.

Claims

1. fast reactor sodium loop pipeline heating equipment, it is characterized in that, go up laying armouring electric heating wire (2) at heated pipeline (1), described armouring electric heating wire (2) is close on the tube wall that is heated pipeline (1), and the electrode at armouring electric heating wire (2) two ends is connected with the positive and negative electrode of power supply respectively.

2. fast reactor sodium loop pipeline heating equipment according to claim 1 is characterized in that, described armouring electric heating wire (2) is helical and is wrapped on heated pipeline (1) outer wall.

3. fast reactor sodium loop pipeline heating equipment according to claim 1 is characterized in that, described armouring electric heating wire (2) is parallel to the axial setting that is heated pipeline (1) and forms at least two round loops.