CN218996420U - Large-length vacuum adsorption device and vacuum tube - Google Patents

Abstract

The utility model relates to a large-length vacuum adsorption device and a vacuum tube, wherein the large-length vacuum adsorption device comprises a vacuum adsorption material and a material activation mechanism, the material activation mechanism comprises a heating strip, a power line and a wrapping layer, the heating strip is arranged in an extending mode along the length direction of the vacuum tube, the power line is connected with one end of the heating strip, the other end of the heating strip and the power line are respectively used for being connected with the positive electrode and the negative electrode of a power supply, the vacuum adsorption material is wrapped on the heating strip, the wrapping layer is wrapped outside the vacuum adsorption material, and the wrapping layer can be ventilated. The vacuum tube is internally provided with a long-length vacuum adsorption device. The vacuum adsorption materials are distributed more uniformly in the vacuum tube, heated more uniformly, partial adsorption materials are prevented from being activated incompletely due to uneven temperature, and the vacuum pipeline is ensured to maintain high vacuum degree for a long time.

Description

Large-length vacuum adsorption device and vacuum tube

Technical Field

The utility model relates to the technical field of superconducting cables, in particular to a long-length vacuum adsorption device and a vacuum tube.

Background

In the vacuum tube of the superconducting cable, it is necessary to place a vacuum adsorbing material between the tube inner layer and the tube outer layer of the vacuum tube to ensure a vacuum state in the vacuum tube. At present, the vacuum adsorption material is mainly activated by heating the adsorption material to an activation temperature in the process of vacuumizing, and when the temperature of the adsorption material is higher than the activation temperature, the gas adsorbed in the material is discharged. After the adsorption material completely discharges the adsorbed gas, the adsorption material stops heating, and the vacuum adsorption material can adsorb the gas again.

Different activation means are generally employed for the amount of vacuum adsorbent material. When the quantity of the adsorption materials is small, fixing the adsorption materials on the metal plate, and heating the whole metal plate through a heater on the metal plate so as to realize the activation of the vacuum adsorption materials; when the quantity of the adsorption materials is large, the adsorption materials are generally placed in an activation device of a net cage structure, and the adsorption materials are directly heated and activated through a heater in the device. Because of the limitations of the prior art, the prior art can only contain the vacuum adsorption material in the activation equipment and place the vacuum adsorption material at one end of the vacuum tube for activation. In a vacuum tube with a large length, the distribution mode of the vacuum adsorption material can lead to that gas in the middle area of the pipeline is difficult to adsorb, and the heat insulation performance of the local area of the vacuum tube is poorer and worse along with the continuous deflation of the material.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model aims to provide a long-length vacuum adsorption device and a vacuum tube, in which the vacuum adsorption material is distributed more uniformly in the vacuum tube and heated more uniformly, so as to avoid incomplete activation of part of the adsorption material caused by uneven temperature, and ensure that the vacuum tube maintains high vacuum for a longer time.

In order to achieve the above purpose, the utility model provides a long-length vacuum adsorption device, which is used for being arranged between an inner layer and an outer layer of a tube of a vacuum tube and comprises a vacuum adsorption material and a material activation mechanism, wherein the material activation mechanism comprises a heating strip, a power transmission line and a wrapping layer, the heating strip is arranged in an extending manner along the length direction of the vacuum tube, the power transmission line is connected with one end of the heating strip, the other end of the heating strip and the power transmission line are respectively used for being connected with a positive electrode and a negative electrode of a power supply, the vacuum adsorption material is wrapped on the heating strip, the wrapping layer is wrapped outside the vacuum adsorption material, and the wrapping layer can breathe.

Further, the wrapping layer is made of glass fiber cloth.

Further, the power line is located within the envelope.

Further, the power transmission line is multiple

Further, conductors in the power transmission line are made of red copper materials.

Further, the heating strip is made of iron-chromium-aluminum alloy materials.

Further, the surface of the heating strip is provided with ribs.

Further, a temperature detector for measuring the temperature of the vacuum adsorption material is also included.

The utility model also provides a vacuum tube, which comprises a tube inner layer and a tube outer layer, and the long-length vacuum adsorption device, wherein the long-length vacuum adsorption device is arranged between the tube inner layer and the tube outer layer

Further, the long-length vacuum adsorption device is spirally wound on the inner layer of the pipe.

As described above, the long-length vacuum adsorption device and the vacuum tube according to the present utility model have the following advantageous effects:

through setting up blank adsorbing material and material activation mechanism, during the use, install between the intraductal layer of vacuum tube and the outer layer of tube, the heating strip extends along vacuum tube length direction and arranges, extend to the other end from vacuum tube one end, the heating strip is as the installation support basis of vacuum adsorption material, vacuum tube all is equipped with vacuum adsorption material in each position of length direction like this, arrange evenly, the heating strip plays the effect of activating vacuum adsorption material simultaneously, one of transmission line and heating strip is connected anodal even negative pole, heat after letting in electric current in the heating strip, the heating vacuum adsorption material discharges the gas that will adsorb in the material. The wrapping layer plays a role in restraining and protecting the vacuum adsorption material, and has air permeability, so that the release of gas by the vacuum adsorption material is not affected. According to the utility model, the vacuum adsorption material is distributed more uniformly in the vacuum tube and heated more uniformly, so that partial adsorption material activation incompletely caused by uneven temperature is avoided, and the vacuum tube is ensured to maintain high vacuum degree for a longer time.

Drawings

Fig. 1 is a schematic structural view of a long-length vacuum adsorption apparatus according to the present utility model.

Fig. 2 is a schematic end-face structure of the long-length vacuum adsorption apparatus of the present utility model.

Fig. 3 is a cross-sectional view taken along A-A in fig. 2.

Description of the reference numerals

1. Heating strip

11. Rib rib

2. Power transmission line

3. Wrapping layer

4. Temperature detector

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper", "lower", "left", "right", "middle", etc. are used herein for convenience of description, but are not to be construed as limiting the scope of the utility model, and the relative changes or modifications are not to be construed as essential to the scope of the utility model.

Referring to fig. 1 to 3, the utility model provides a long-length vacuum adsorption device, which is used for carrying out vacuum adsorption between an inner layer and an outer layer of a tube provided with a vacuum tube, and comprises a vacuum adsorption material and a material activation mechanism, wherein the material activation mechanism comprises a heating strip 1, a power transmission line 2 and a wrapping layer 3, the heating strip 1 is arranged in an extending manner along the length direction of the vacuum tube, the power transmission line 2 is connected with one end of the heating strip 1, the other end of the heating strip 1 and the power transmission line 2 are respectively connected with the anode and the cathode of a power supply, the vacuum adsorption material is wrapped on the heating strip 1, the wrapping layer 3 is wrapped outside the vacuum adsorption material, and the wrapping layer 3 can be ventilated.

The utility model relates to a large-length vacuum adsorption device which is integrally in a strip shape and can be used for a large-length vacuum tube with the length of more than 10m, when the large-length vacuum adsorption device is used, the large-length vacuum adsorption device is installed between the inner layer and the outer layer of the vacuum tube, a heating strip 1 is arranged to extend along the length direction of the vacuum tube, the heating strip 1 can extend from one end to the other end of the vacuum tube, and can also extend in a curve or spiral winding mode, and the like, the heating strip 1 is used as an installation support base of a vacuum adsorption material, so that the vacuum tube is provided with the vacuum adsorption material at all positions in the length direction, the arrangement is uniform, the heating strip 1 simultaneously plays a role of activating the vacuum adsorption material, when the vacuum adsorption material is required to be activated, a power line 2 and the heating strip 1 are connected with an anode and a cathode, and when the vacuum adsorption material is required to be activated, the heating strip 1 heats, the vacuum adsorption material is heated, and gas adsorbed in the material is discharged, thereby the material is activated. The wrapping layer 3 plays a role in restraining and protecting the vacuum adsorption material, and the wrapping layer 3 has air permeability and does not influence the release of gas by the vacuum adsorption material.

The utility model is further described in a particularly preferred embodiment with reference to fig. 1 to 3.

In this embodiment, referring to fig. 1, as a preferred design, the material of the wrapping layer 3 is glass fiber cloth, and the power transmission line 2 is wrapped in the wrapping layer 3, the wrapping layer 3 of the glass fiber cloth has good air permeability and high temperature resistance, so that the vacuum adsorption material can be deflated well, and meanwhile, the wrapping layer 3 has good capability of bearing tension, and the large-length vacuum adsorption device can be installed by wrapping the wrapping layer on the inner tube layer of the vacuum tube.

In this embodiment, referring to fig. 1, as a preferred design, the conductors in the power line 2 use a red copper material with higher conductivity, and the power line 2 is preferably an enamel wire in view of heat dissipation and insulation of the power line 2. The power transmission lines 2 are preferably multiple, specifically two power transmission lines 2 are all negative electrode lines in the embodiment, and are used for externally connecting a power supply negative electrode, and a heating strip is connected with a positive electrode, and the resistance value of the negative electrode power transmission lines 2 can be reduced by adopting the multiple power transmission lines 2, so that overheating of the power transmission lines 2 is avoided, and the scattered distribution of the two power transmission lines 2 can also avoid too concentrated heating. In other embodiments, of course, the power line 2 may be connected to the positive electrode and the heating strip 1 to the negative electrode,

in this embodiment, referring to fig. 1, as a preferred design, the heating strip 1 is made of a tubular structure, preferably an iron-chromium-aluminum alloy material, and both ends of the heating strip 1 are provided with bolt structures, so as to be convenient for connection with the power transmission line 2 and an external positive electrode line. Preferably, the surface of the heating strip 1 is provided with uniformly arranged ribs 11, so that heat of the heating strip 1 can be better transmitted to the vacuum adsorption material, and the local temperature of the heating strip 1 is prevented from being too high.

In this embodiment, referring to fig. 1, as a preferred design, the vacuum adsorption apparatus further comprises a temperature detector 4 for measuring the temperature of the vacuum adsorption material, so as to prevent aging of the material caused by too high heating temperature, and the temperature detector 4 may be a thermocouple located at the inner side surface of the coating layer.

The utility model also provides a vacuum tube, which comprises an inner tube layer and an outer tube layer, and further comprises the long-length vacuum adsorption device, wherein the long-length vacuum adsorption device is arranged between the inner tube layer and the outer tube layer and extends along the length direction of the vacuum tube, preferably, the long-length vacuum adsorption device is spirally wound on the inner tube layer, and the coating layer made of glass fiber cloth can bear certain tension.

From the above, the long-length vacuum adsorption device and the vacuum tube of the utility model have the following technical effects:

1. the vacuum adsorption materials can be distributed more uniformly in the vacuum tube and heated more uniformly, so that partial adsorption materials are prevented from being activated incompletely due to uneven temperature, and the vacuum tube is ensured to maintain high vacuum degree for a long time; 2. simple structure can conveniently install in the vacuum tube, convenient to use.

In summary, the present utility model effectively overcomes the disadvantages of the prior art and has high industrial utility value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. The utility model provides a long length vacuum adsorption equipment for set up between the intraductal layer of vacuum tube and the pipe skin, its characterized in that: including vacuum adsorption material and material activation mechanism, material activation mechanism includes heating strip (1), power transmission line (2) and parcel layer (3), heating strip (1) are arranged along vacuum tube length direction extension, power transmission line (2) are connected with the one end of heating strip (1), heating strip (1) other end and power transmission line (2) are used for being connected with the positive negative pole of power respectively, vacuum adsorption material surrounds on heating strip (1), parcel layer (3) surround outside vacuum adsorption material, and parcel layer (3) can be ventilative.

2. The long length vacuum adsorption apparatus of claim 1, wherein: the material of the wrapping layer (3) is glass fiber cloth.

3. The long length vacuum adsorption apparatus of claim 1, wherein: the power transmission line (2) is positioned in the wrapping layer (3).

4. The long length vacuum adsorption apparatus of claim 1, wherein: the number of the power transmission lines (2) is multiple.

5. The long length vacuum adsorption apparatus of claim 1, wherein: the conductors in the power transmission line (2) are made of red copper materials.

6. The long length vacuum adsorption apparatus of claim 1, wherein: the heating strip (1) is made of iron-chromium-aluminum alloy materials.

7. The long length vacuum adsorption apparatus of claim 1, wherein: the surface of the heating strip (1) is provided with ribs (11).

8. The long length vacuum adsorption apparatus of claim 1, wherein: also comprises a temperature detector (4), wherein the temperature detector (4) is used for measuring the temperature of the vacuum adsorption material.

9. A vacuum tube comprising an inner tube layer and an outer tube layer, characterized in that: further comprising a long length vacuum adsorption apparatus according to any one of claims 1 to 8 disposed between the inner tube layer and the outer tube layer.

10. A vacuum tube as claimed in claim 9, wherein: the long-length vacuum adsorption device is spirally wound on the inner layer of the pipe.

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