阅读说明：本技术 一种换热管不易断裂的换热器 (Heat exchanger with heat exchange tube not prone to fracture ) 是由 陈科荣 钱文 盛凤军 孙超 于 2020-08-24 设计创作，主要内容包括：本发明公开了一种换热管不易断裂的换热器,包括进出气分布管,进出气分布管内设有分隔板将进出气分布管分隔成一区和二区,进出气分布管上设有两管道,两管道分别和一区、二区连通,进出气分布管上设置有若干平行布置的换热管组,换热管组包括换热外管和换热内管,换热内管位于换热外管内,换热外管一端开口,换热内管两端开口,换热外管开口一端连接在进出气分布管上并和一区连通,换热内管一端伸出换热外管连接在分隔板上并和二区连通,换热外管内壁和换热内管外壁之间存在间距,换热内管和换热外管自由端部存在间距。本发明中换热管组一端为自由端,换热管组的热膨胀不受任何限制,避免了热应力的问题,换热管不易断裂。(The invention discloses a heat exchanger with a heat exchange tube difficult to break, which comprises an air inlet and outlet distribution tube, wherein a partition plate is arranged in the air inlet and outlet distribution tube to partition the air inlet and outlet distribution tube into a first area and a second area, two pipelines are arranged on the air inlet and outlet distribution tube and are respectively communicated with the first area and the second area, a plurality of heat exchange tube groups arranged in parallel are arranged on the air inlet and outlet distribution tube, each heat exchange tube group comprises an outer heat exchange tube and an inner heat exchange tube, the inner heat exchange tube is positioned in the outer heat exchange tube, one end of the outer heat exchange tube is opened, two ends of the inner heat exchange tube are opened, one end of the opened outer heat exchange tube is connected to the air inlet and outlet distribution tube and is communicated with the first area, one end of the inner heat exchange tube extends out of the outer heat exchange tube and is connected to the partition plate. One end of the heat exchange tube set is a free end, the thermal expansion of the heat exchange tube set is not limited at all, the problem of thermal stress is avoided, and the heat exchange tube is not easy to break.)

1. A heat exchanger with a heat exchange tube not easy to break is characterized by comprising an air inlet and outlet distribution tube, the gas inlet and outlet distribution pipe is internally provided with a partition plate which divides the gas inlet and outlet distribution pipe into a first area and a second area, the gas inlet and outlet distribution pipe is provided with two pipelines which are respectively communicated with the first area and the second area, the gas inlet and outlet distribution pipe is provided with a plurality of heat exchange pipe sets which are arranged in parallel, each heat exchange pipe set comprises a heat exchange outer pipe and a heat exchange inner pipe, the heat exchange inner pipe is positioned in the heat exchange outer pipe, one end of the heat exchange outer pipe is opened, two ends of the heat exchange inner pipe are opened, one end of the opening of the heat exchange outer pipe is connected to the gas inlet and outlet distribution pipe and is communicated with the first area, one end of the heat exchange inner pipe extends out of the heat exchange outer pipe to be connected to the partition plate and communicated with the second area, a space exists between the inner wall of the heat exchange outer pipe and the outer wall of the heat exchange inner pipe, and a space exists between the free end portion of the heat exchange inner pipe and the free end portion of the heat exchange outer pipe.

2. The heat exchanger with the heat exchange tube not easy to break as claimed in claim 1, wherein the two tubes are respectively an air inlet tube and an air outlet tube, the first zone is an air inlet zone, the second zone is an air outlet zone, the air inlet tube is communicated with the first zone, and the air outlet tube is communicated with the second zone.

3. The heat exchanger with the heat exchange tube not easy to break as claimed in claim 1, wherein the two tubes are respectively an air inlet tube and an air outlet tube, one zone is an air outlet zone, the other zone is an air inlet zone, the air inlet tube is communicated with the two zones, and the air outlet tube is communicated with the one zone.

4. The heat exchanger of claim 1, wherein a limiting plate is disposed at a free end of the heat exchange tube set, the limiting plate is provided with a plurality of counter bores or through holes for passing through the heat exchange tube set, the limiting plate and the inlet/outlet distribution tube are connected by two supporting plates, the supporting plates are respectively connected to two ends of the limiting plate and the inlet/outlet distribution tube, and the limiting plate, the inlet/outlet distribution tube and the two supporting plates form a square frame structure.

5. The heat exchanger of claim 4, wherein a heat exchange tube support is fixed between the two support plates, the heat exchange tube support is parallel to the inlet and outlet distribution tubes, two ends of the heat exchange tube support are fixed on the two support plates, and the heat exchange tube support is provided with a plurality of semicircular notches for clamping into the heat exchange outer tubes.

6. The heat exchanger with the heat exchange tube not prone to fracture as claimed in claim 1, wherein a plurality of fin plates are sleeved outside the heat exchange outer tube, and the fin plates are stainless steel fin plates.

7. The heat exchanger with the heat exchange tube not easy to break as claimed in claim 2 or 3, wherein the outlet pipe is positioned at the bottom of the inlet and outlet gas distribution tube.

Technical Field

The invention relates to the field of heat exchangers, in particular to a heat exchanger with a heat exchange tube not easy to break.

Background

The heat exchanger is the equipment that is used for the heat exchange, and the heat exchange tube both ends of traditional heat exchanger are fixed, because there is thermal stress in the operation of heat exchange tube, there is the difference in the thermal stress between the heat exchange tube, will lead to the shrinkage degree between the heat exchange tube different like this, lead to partial heat exchange tube fracture.

Disclosure of Invention

The invention aims to provide a heat exchanger with a heat exchange tube not easy to break.

The invention has the innovation points that one end of the heat exchange tube set is a free end, the thermal expansion of the heat exchange tube set is not limited at all, the free thermal expansion is met, the problem of thermal stress is avoided, and the heat exchange tube is not easy to break.

In order to achieve the purpose, the technical scheme of the invention is as follows: a heat exchanger with a heat exchange tube difficult to break comprises an air inlet and outlet distribution tube, wherein a partition plate is arranged in the air inlet and outlet distribution tube to divide the air inlet and outlet distribution tube into a first area and a second area, two pipelines are arranged on the air inlet and outlet distribution tube and are respectively communicated with the first area and the second area, a plurality of heat exchange tube sets arranged in parallel are arranged on the air inlet and outlet distribution tube, each heat exchange tube set comprises an outer heat exchange tube and an inner heat exchange tube, the inner heat exchange tube is positioned in the outer heat exchange tube, one end of the outer heat exchange tube is opened, two ends of the inner heat exchange tube are opened, one end of the opening of the outer heat exchange tube is connected to the air inlet and outlet distribution tube and is communicated with the first area, one end of the inner heat exchange tube extends out of the outer heat exchange tube and is connected to the partition plate and is communicated with the second area, a.

Furthermore, the two pipelines are respectively an air inlet pipe and an air outlet pipe, the first area is an air inlet area, the second area is an air outlet area, the air inlet pipe is communicated with the first area, and the air outlet pipe is communicated with the second area.

Furthermore, the two pipelines are respectively an air inlet pipe and an air outlet pipe, the first area is an air outlet area, the second area is an air inlet area, the air inlet pipe is communicated with the second area, and the air outlet pipe is communicated with the first area.

Furthermore, a limiting plate is arranged at the free end of the heat exchange tube group, a plurality of counter bores or through holes used for penetrating the heat exchange tube group are formed in the limiting plate, the limiting plate and the gas inlet and outlet distribution tube are connected through two supporting plates, the supporting plates are respectively connected to the two ends of the limiting plate and the two ends of the gas inlet and outlet distribution tube, and the limiting plate, the gas inlet and outlet distribution tube and the two supporting plates form a square frame structure. The heat exchange tube set can be limited, and abnormal sound generated by vibration of the heat exchange tube set in heat exchange is avoided.

Further, be fixed with the heat exchange tube support frame between two backup pads, the heat exchange tube support frame is parallel with business turn over gas distribution pipe, the heat exchange tube support frame both ends are fixed on two backup pads, be equipped with a plurality of semi-circular notches that are used for the card to go into the heat transfer outer tube on the heat exchange tube support frame. The vibration of the heat exchange tube is avoided.

Furthermore, a plurality of fin plates are sleeved outside the heat exchange outer pipe, and the fin plates are stainless steel fin plates. The heat exchange efficiency is higher.

Furthermore, the air outlet pipe is positioned at the bottom of the air inlet and outlet distribution pipe. The water generated after steam heat exchange can be prevented from being accumulated in the gas outlet area to cause the gas inlet and outlet distribution pipes to be rotten.

The invention has the beneficial effects that:

1. one end of the heat exchange tube set is a free end, the thermal expansion of the heat exchange tube set is not limited at all, the free thermal expansion is met, the problem of thermal stress is avoided, and the heat exchange tube is not easy to break.

2. The air outlet pipe is positioned at the bottom of the air inlet and outlet distribution pipe, so that water generated after steam heat exchange is prevented from being accumulated in the air outlet area, and the air inlet and outlet distribution pipe is prevented from being rotten.

3. According to the invention, the limiting plate is arranged at the free end of the heat exchange tube set, so that the heat exchange tube set can be limited, and abnormal sound caused by vibration of the heat exchange tube set in heat exchange is avoided.

Drawings

Fig. 1 is a schematic structural view of embodiment 1.

Fig. 2 is a schematic structural view of embodiment 2.

Fig. 3 is a schematic structural view of a support frame for a heat exchange tube.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.