Metal corrugated straight-through vacuum tube

Abstract

The utility model belongs to the technical field of solar energy application, in particular to a metal corrugated straight-through vacuum tube, which is characterized in that at least two telescopic ribs are arranged on a clamping valve, and an air tap is connected to the clamping valve between the adjacent telescopic ribs; the clamping valve comprises a glass connecting end, the glass connecting end extends towards the inner side to form an inner side protruding rib and then extends towards the outer side to form a telescopic rib, and the height between the adjacent telescopic ribs is the same as the height of the protruding rib. According to the utility model, the air tap is connected in the clamping valve, the air tap is used for vacuumizing, and the height of the air tap is reduced between the telescopic ribs after vacuumizing, so that the air tap cannot be damaged during transportation and later installation; in addition, the vacuumizing position is arranged on the clamping valve, so that labor is saved, secondary stress is not generated, the pipe is not easy to explode, and the yield of the metal corrugated straight-through vacuum pipe is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar energy application, in particular to a metal corrugated straight-through vacuum tube. Background Art

[0002] In the prior art, a valve-locking structure is provided in the metal corrugated straight-through vacuum tubes used. The valve-locking structure is made of metal, and its expansion rate is similar to that of glass, so that when the glass expands when heated and retracts at low temperatures, it expands and retracts synchronously with the glass to prevent the vacuum tube from bursting. However, the vacuum tubes in the prior art still have the following defects when in use: after the inner and outer layers of glass of the vacuum tube are connected, it is necessary to evacuate the space between the inner and outer layers of glass to form a vacuum tube, and a gas nozzle protrudes from the outer layer of glass to connect the external vacuum tube with the vacuum tube gap; after the vacuum is evacuated, the gas nozzle is exposed and protrudes from the outer layer of glass. During transportation and installation, it is necessary to be very careful to protect the gas nozzle. If the gas nozzle is damaged, the vacuum will be destroyed and cannot be repaired, and the vacuum tube cannot be used and becomes waste. Summary of the invention

[0003] The utility model provides a metal corrugated straight-through vacuum tube, so as to achieve the purpose of preventing the vacuum tube from exploding.

[0004] A metal corrugated straight-through vacuum tube is characterized in that at least two telescopic ribs are arranged on a clamping valve, and a gas nozzle is connected to the clamping valve between adjacent telescopic ribs.

[0005] Furthermore, the clamping valve comprises a glass connecting end, which extends inwardly to form an inner protruding rib, and then extends outwardly to form a telescopic rib, and the adjacent telescopic ribs are at the same height as the protruding ribs.

[0006] Furthermore, there are two telescopic ribs.

[0007] Furthermore, the height of the air nozzle is higher than the telescopic rib.

[0008] Furthermore, the metal corrugated straight-through vacuum tube equipped with the above-mentioned clamping valve includes an inner glass tube and two outer glass tube sections, and the clamping valve connects the two outer glass tube sections; the other end of each outer glass tube section is melt-sealed and connected to the end of the inner glass tube.

[0009] Furthermore, after the air nozzle is vacuumed, the air nozzle is sealed and pressed into the height of the telescopic rib.

[0010] In the utility model, an air nozzle is connected to the clamping valve, and the air nozzle is used for vacuuming. After vacuuming, the height of the air nozzle is lowered to between the telescopic ribs, and the position of the air nozzle will not be damaged during transportation and subsequent installation. In addition, the vacuuming position is set on the clamping valve, which saves labor and energy, does not generate secondary stress, is not easy to explode the tube, and ensures the yield rate of the metal corrugated straight-through vacuum tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the middle card valve of the utility model;

[0012] Figure 2 It is the AA section view of the card valve;

[0013] Figure 3 It is a schematic diagram of the structure of a metal corrugated straight-through vacuum tube;

[0014] Figure 4 This is the BB cross-sectional view of the metal corrugated straight-through vacuum tube;

[0015] In the figure: 1. valve; 1.1. telescopic ribs; 1.2. air nozzle; 1.3. glass connecting end; 1.4. protruding ribs; 2. inner glass tube; 3. outer glass tube. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further explained below through specific implementation methods. Example

[0017] The utility model provides a metal corrugated straight-through vacuum tube, characterized in that at least two telescopic ribs 1.1 are arranged on the card valve 1, and a gas nozzle 1.2 is connected to the card valve 1 between adjacent telescopic ribs 1.1; and the height of the gas nozzle 1.2 is higher than the telescopic ribs 1.1. The card valve 1 includes a glass connection end 1.3, which extends inward to form an inner protruding rib 1.4, and then extends outward to form the telescopic rib 1.1, and the position height between adjacent telescopic ribs 1.1 and the protruding rib 1.4 is the same. In this embodiment, there are two telescopic ribs 1.1. The gas nozzle 1.2 is located between the two telescopic ribs.

[0018] The gas nozzle 1.2 is made of metal and is connected to the card valve 1 by welding, which has a simple connection method and is convenient for processing.

[0019] The metal corrugated straight-through vacuum tube equipped with the card valve 1 in Example 1 includes an inner glass tube 2 and an outer glass tube 3. The outer glass tube 3 is divided into two sections. The card valve 1 connects the two sections of the outer glass tube by a welding method in the prior art; the other end of each section of the outer glass tube 3 is melt-sealed and connected to the end of the inner glass tube 2.

[0020] After the vacuuming is completed, the air nozzle 1.2 is sealed and pressed into the height of the telescopic rib 1.1, so that the air nozzle is accommodated between the telescopic ribs 1.1 and is no longer exposed outside the outer glass tube 3, which is convenient for transportation and subsequent installation, and the air nozzle position is not damaged in the prior art, resulting in product scrapping.

Claims

1. A metal corrugated straight-through vacuum tube, characterized in that: At least two telescopic ribs are arranged on the clamping valve, and a gas nozzle is connected to the clamping valve between adjacent telescopic ribs; the clamping valve includes a glass connecting end, which extends inward to form an inner protruding rib, and then extends outward to form a telescopic rib, and the adjacent telescopic ribs are at the same height as the protruding ribs; there are two telescopic ribs; the height of the gas nozzle is higher than the telescopic ribs; the metal corrugated straight-through vacuum tube equipped with the clamping valve includes an inner glass tube and two outer glass tubes, and the clamping valve connects the two outer glass tubes; the other end of each outer glass tube is melt-sealed and connected to the end of the inner glass tube, and after the gas nozzle is vacuumed, the gas nozzle is sealed and pressed into the height of the telescopic rib.

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