CN217276752U

CN217276752U - Vacuum leakage detection device for heat collecting tube

Info

Publication number: CN217276752U
Application number: CN202220678489.8U
Authority: CN
Inventors: 薛道荣; 郑泽勇; 梁君; 李强; 冯加龙
Original assignee: Hebei Daorong New Energy Technology Co Ltd
Current assignee: Hebei Daorong New Energy Technology Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-23
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a thermal-collecting tube vacuum leak hunting device, including vacuum apparatus, leak detector, a plurality of flexible butt joint rubber tube, vacuum coupling mechanism and the elevating system that sets up side by side, elevating system with vacuum coupling mechanism is connected, vacuum coupling mechanism one end through three solenoid valve respectively with vacuum apparatus and leak detector are connected, the vacuum coupling mechanism other end is connected with the bottom fixed connection of flexible butt joint rubber tube, flexible butt joint rubber tube from the bottom up includes seal segment and butt joint section in proper order, the inside of butt joint section is tubaeform, the wall thickness of seal segment is greater than 6mm, the embedded at least one sealing washer that is equipped with of seal segment. By adopting the vacuum leakage detection device for the heat collecting tube with the structure, the flexible connection of the vacuum device, the leakage detector and the heat collecting tube is realized through the flexible butt rubber tube, the vacuum connecting mechanism and the lifting mechanism, and the rejection rate in the detection process is reduced.

Description

Vacuum leakage detection device for heat collecting tube

Technical Field

The utility model belongs to the technical field of the light and heat technique and specifically relates to a thermal-collecting tube vacuum leak hunting device is related to.

Background

The solar heat collecting pipe is made by melting and welding a glass pipe and two joints, needs to be sealed and detected, is generally placed on a leak detection platform with the solar heat collecting pipe and is vacuumized through a tail pipe of the solar heat collecting pipe for detection, and the solar heat collecting pipe is a glass product, so that the tail pipe of the solar heat collecting pipe is easily damaged in the detection process, and the rejection rate is too high. In the prior art, the leak detector and the vacuum system adopt the corrugated pipe to connect the tail pipe, but the corrugated pipe contracts and hardens in a vacuum state (negative pressure), so that the tail pipe and the corrugated pipe are rigidly connected, and the solar heat collecting pipe is easy to damage and scrap.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a thermal-collecting tube vacuum leak hunting device has realized the flexonics of vacuum apparatus and leak detector and thermal-collecting tube through flexible butt joint rubber tube, vacuum coupling mechanism and elevating system, reduces the disability rate in the testing process.

In order to achieve the purpose, the utility model provides a thermal-collecting tube vacuum leak hunting device, including vacuum apparatus, leak detector, a plurality of flexible butt joint rubber tube, vacuum coupling mechanism and the elevating system that sets up side by side, elevating system with vacuum coupling mechanism is connected, vacuum coupling mechanism one end through three solenoid valve respectively with vacuum apparatus and leak detector are connected, the bottom fixed connection of the vacuum coupling mechanism other end and flexible butt joint rubber tube, flexible butt joint rubber tube from the bottom up includes seal segment and butt joint section in proper order, the inside of butt joint section is tubaeform, the wall thickness of seal segment is greater than 6mm, the embedded at least one sealing washer that is equipped with of seal segment.

Preferably, the inner wall of the sealing section is provided with three sealing grooves arranged in parallel, and sealing rings are arranged in the sealing grooves.

Preferably, the vacuum connecting mechanism comprises a plurality of rigid concentric reducer pipes, a branch pipe and a vacuum hose, one end of the vacuum hose is fixed with a three-way electromagnetic valve, the other end of the vacuum hose is connected with the branch pipe, the branch pipe is fixedly connected with the bottom ends of the plurality of rigid concentric reducer pipes, a sealing connecting piece is fixed at the top of the rigid concentric reducer pipe top, an exhaust pipe is arranged on the side face of the sealing connecting piece, and the sealing connecting piece is fixedly connected with the bottom end of a flexible butt joint rubber pipe.

Preferably, a fixed hoop is fixed on the rigid concentric reducer pipe, a guide ring is fixed on one side of the fixed hoop, and the guide ring is sleeved on the guide post.

Preferably, the lifting mechanism comprises a connecting plate and lifting cylinders fixed at two ends of the connecting plate, and the connecting plate is fixedly connected with the guide rings.

Therefore, the utility model adopts the above structure a thermal-collecting tube vacuum leak hunting device has following beneficial effect:

(1) and the flexible butt joint rubber tube is adopted to be in butt joint with the heat collecting tube, so that the flexible butt joint is kept in the vacuumizing process, and the rejection rate in the detection process is reduced.

(2) The wall thickness of the sealing section of the flexible butt joint rubber pipe is larger than 6mm, so that the inner diameter of the sealing section does not change in the air tightness under the vacuum state, and the butt joint section is horn-shaped, so that a tail pipe can conveniently enter the sealing section.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of a heat collecting tube vacuum leak detection device of the present invention;

FIG. 2 is a schematic view of the structure of the flexible butt joint rubber tube of the present invention;

FIG. 3 is a schematic view of the lifting mechanism of the present invention;

fig. 4 is a schematic structural view of the vacuum connection mechanism of the present invention.

Reference numerals

1. A vacuum device; 2. a leak detector; 3. a flexible butt joint rubber pipe; 31. a sealing section; 32. a seal ring; 33. A butt joint section; 4. a vacuum connection mechanism; 41. a rigid concentric reducer; 42. a branch pipe; 43. a vacuum hose; 44. a sealing connection; 45. an exhaust pipe; 46. a three-way electromagnetic valve; 5. fixing the anchor ear; 51. a guide ring; 6. a guide post; 7. a lifting mechanism; 71. a connecting plate; 72. and a lifting cylinder.

Detailed Description

Examples

Fig. 1 is the utility model relates to a structural schematic diagram of thermal-collecting tube vacuum leak hunting device, fig. 2 is the utility model discloses flexible butt joint rubber tube structure schematic diagram, fig. 3 is the utility model discloses elevating system structure schematic diagram, fig. 4 are the utility model discloses vacuum connection mechanism structure schematic diagram, as shown, a thermal-collecting tube vacuum leak hunting device includes vacuum apparatus 1, leak detector 2, a plurality of flexible butt joint rubber tube 3, vacuum connection mechanism 4 and the elevating system 7 that sets up side by side.

The flexible butt joint rubber tube 3 is made of rubber materials, the flexible butt joint rubber tube 3 sequentially comprises a sealing section 31 and a butt joint section 33 from bottom to top, the inside of the butt joint section 33 is horn-shaped, a tail pipe can conveniently enter the sealing section 31, and the guiding effect is achieved. The wall thickness of seal segment 31 is greater than 6mm for the change that does not take place to influence the gas tightness of seal segment 31's internal diameter under vacuum state, the embedded at least one sealing washer 32 that is equipped with of seal segment 31, three parallel arrangement's seal groove is seted up to this embodiment seal segment 31 inner wall, is provided with sealing washer 32 in the seal groove, guarantees the gas tightness of butt joint.

The vacuum connecting mechanism 4 comprises a plurality of rigid concentric reducer pipes 4, a branch pipe 42 and a vacuum hose 43, wherein one end of the vacuum hose 43 is fixed with a three-way electromagnetic valve 46, and the other two ends of the three-way electromagnetic valve 46 are respectively connected with the vacuum device 1 and the leak detector 2 and used for completing vacuum pumping and filling of leak detection gas. The other end of the vacuum hose 43 is connected with a branch pipe 42, the branch pipe 42 is fixedly connected with the bottom ends of the plurality of rigid concentric reducer pipes 4, a sealing connecting piece 44 is fixed at the top of each rigid concentric reducer pipe 4, an exhaust pipe 45 is arranged on the side face of each sealing connecting piece 44, and the sealing connecting pieces 44 are fixedly connected with the bottom ends of the flexible butt joint rubber pipes 3, so that the operation of vacuumizing and filling leak detection gas is performed while the plurality of heat collecting pipes are achieved.

The rigid concentric reducer pipe 4 is fixed with a fixed hoop 5, one side of the fixed hoop 5 is fixed with a guide ring 51, and the guide ring 51 is sleeved on the guide post 6. The lifting mechanism 7 comprises a connecting plate 71 and lifting cylinders 72 fixed at two ends of the connecting plate 71, the connecting plate 71 is fixedly connected with the guide rings 51, so that a plurality of stations can ascend and descend, and multi-station detection can be realized.

Therefore, the utility model adopts the above structure a thermal-collecting tube vacuum leak hunting device has realized the flexonics of vacuum apparatus 1 and leak detector 2 and thermal-collecting tube through flexible butt joint rubber tube 3, vacuum coupling mechanism 4 and elevating system 7, reduces the disability rate in the testing process.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a thermal-collecting tube vacuum leak hunting device, includes vacuum apparatus and leak detector, its characterized in that: still include a plurality of flexible butt joint rubber tube, vacuum coupling mechanism and the elevating system that sets up side by side, elevating system with vacuum coupling mechanism is connected, vacuum coupling mechanism one end pass through three solenoid valve respectively with vacuum apparatus and leak detector are connected, the bottom fixed connection of the vacuum coupling mechanism other end and flexible butt joint rubber tube, flexible butt joint rubber tube from the bottom up includes seal segment and butt joint section in proper order, the inside of butt joint section is tubaeform, the wall thickness of seal segment is greater than 6mm, the embedded at least one sealing washer that is equipped with of seal segment.

2. The vacuum leakage detection device for the heat collecting tube according to claim 1, characterized in that: the sealing section inner wall is provided with three parallel seal grooves, and seal rings are arranged in the seal grooves.

3. The vacuum leakage detection device for the heat collecting tube according to claim 1, characterized in that: the vacuum connecting mechanism comprises a plurality of rigid concentric reducer pipes, a branch pipe and a vacuum hose, wherein one end of the vacuum hose is fixed with a three-way electromagnetic valve, the other end of the vacuum hose is connected with the branch pipe, the branch pipe is fixedly connected with the bottom ends of the plurality of rigid concentric reducer pipes, a sealing connecting piece is fixed at the top of the rigid concentric reducer pipe top, an exhaust pipe is arranged on the side surface of the sealing connecting piece, and the sealing connecting piece is fixedly connected with the bottom end of a flexible butt joint rubber pipe.

4. The vacuum leakage detection device for the heat collecting tube according to claim 3, characterized in that: the rigid concentric reducer pipe is fixed with a fixed hoop, one side of the fixed hoop is fixed with a guide ring, and the guide ring is sleeved on the guide post.

5. The vacuum leakage detection device for the heat collecting tube according to claim 4, characterized in that: the lifting mechanism comprises a connecting plate and lifting cylinders fixed at two ends of the connecting plate, and the connecting plate is fixedly connected with the guide rings.