CN110793017A

CN110793017A - H-shaped fin economizer

Info

Publication number: CN110793017A
Application number: CN201911261431.2A
Authority: CN
Inventors: 李德民; 周大同
Original assignee: Jiangsu Zhongke Heavy Industry Co Ltd
Current assignee: Jiangsu Zhongke Heavy Industry Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-02-14

Abstract

The invention discloses an H-shaped fin economizer which comprises two vertical supporting plates, wherein two horizontal connecting plates are fixedly connected between the two supporting plates, the two connecting plates are symmetrically connected to the centers of the supporting plates, a plurality of arc-shaped through holes which are communicated from left to right are uniformly distributed on the side walls of the supporting plates, horizontal steel pipes are fixedly connected in the arc-shaped through holes, a U-shaped bent pipe is fixedly connected at the bending part of each two adjacent steel pipes, the U-shaped bent pipes are correspondingly arranged on the outer sides of the two supporting plates, a plurality of fins are uniformly distributed on the outer sides of the steel pipes between the two supporting plates, the fins are connected with the steel pipes through an installing mechanism, and the two steel pipes on the outermost side are. The invention is convenient to replace the damaged fins, is beneficial to the long-term use of the economizer, ensures that the water in the economizer is in a flowing state, adds a heat return process to the cycle, improves the average temperature of heat absorption, and further increases the cycle efficiency.

Description

H-shaped fin economizer

Technical Field

The invention relates to the technical field of economizers, in particular to an H-shaped fin economizer.

Background

The economizer is a device which is arranged at the lower part of a flue at the tail part of a boiler and used for recovering waste heat, water fed by the boiler is heated into a heating surface of saturated water under the pressure of a steam drum, and the economizer is called as the economizer because the economizer absorbs the heat of low-temperature flue gas, reduces the smoke exhaust temperature of the flue gas, saves energy and improves efficiency.

At present, in the boiler manufacturing industry, most of large and medium boilers are provided with finned tube economizers, the existing steel tube type economizer usually consists of horizontally arranged parallel elbow tubes (also called as coiled tubes), fins and fins can be added outside the tubes to improve the heat transfer effect, and the finned tube economizer is most widely applied as an H-shaped finned tube economizer. The traditional H-shaped finned tube economizer comprises a plurality of light tubes which are arranged in parallel and alternately connected together at the same end, so that the inner cavities of all the light tubes are communicated. The outer side surface of the light pipe is welded with a spiral fin penetrating through the total length of the light pipe.

However, the existing fins are easy to be damaged after long-term use, and the use and maintenance costs are increased.

Disclosure of Invention

The invention aims to provide an H-shaped fin economizer which comprises two vertical supporting plates, wherein two horizontal connecting plates are fixedly connected between the two supporting plates and are symmetrically connected to the central positions of the supporting plates, a plurality of arc-shaped through holes which are communicated from left to right are uniformly distributed on the side walls of the supporting plates, horizontal steel pipes are fixedly connected in the arc-shaped through holes, a U-shaped bent pipe is fixedly connected at the bent position of each two adjacent steel pipes and is correspondingly arranged on the outer sides of the two supporting plates, a plurality of fins are uniformly distributed on the outer sides of the steel pipes between the two supporting plates and are connected with the steel pipes, the two steel pipes on the outermost side are respectively connected with a water inlet pipe and a water outlet pipe, a cooling liquid circulating mechanism is connected between the water inlet pipe and the water outlet pipe, and cooling is carried out through cooling media.

Preferably, the lower extreme fixed connection of backup pad has the horizontally worker shape board, the both ends of worker shape board all extend to the outside of backup pad, and lie in the mounting hole that communicates from top to bottom seted up on the worker shape board upper end in the backup pad outside.

Preferably, the fins are spliced on the side wall of the steel pipe, arc-shaped grooves attached to the steel pipe are formed in the side wall of the fins, through holes are formed in the side wall of the fins, the same U-shaped connecting rod is connected into the through holes of the two fins, and the U-shaped connecting rod penetrates through the through holes and is in threaded connection with a fastening nut.

Preferably, fixedly connected with rubber abrasionproof pad on the arc wall inner wall of fin, and rubber abrasionproof pad is connected with the laminating of the lateral wall of steel pipe.

Preferably, can thermal cycle mechanism includes the box of fixed connection in the inlet tube and the outlet pipe outside, central fixedly connected with water tank in the box, fixed intercommunication has first water pipe between outlet pipe and the water tank, the fixedly connected with pump body on the output lateral wall of water tank, the output fixedly connected with second water pipe of the pump body, and the second water pipe keeps away from the one end of the pump body and the fixed intercommunication of inlet tube.

Preferably, fixedly connected with on the lateral wall of box and the radiator that the water tank corresponds, the radiator includes a plurality of fin, and the radiator is connected with the lateral wall laminating of water tank.

Drawings

Fig. 1 is a sectional view of a top view of an H-shaped fin economizer according to the present invention;

fig. 2 is a side structure view of a fin of the H-shaped fin economizer according to the present invention;

fig. 3 is a schematic side view of an H-shaped fin economizer according to the present invention.

In the figure: the heat radiator comprises a supporting plate 1, a connecting plate 2, a steel pipe 3, a U-shaped bent pipe 4, fins 5, a water inlet pipe 6, a water outlet pipe 7, an I-shaped plate 8, a U-shaped connecting rod 9, a fastening nut 10, a rubber anti-abrasion pad 11, a box body 12, a water tank 13, a first water pipe 14, a pump body 15, a second water pipe 16 and a radiator 17.

Detailed Description

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

The H-shaped fin economizer of the present invention shown in fig. 1-3 comprises two vertical support plates 1, two horizontal connecting plates 2 are fixedly connected between the two support plates 1, and the two connecting plates 2 are symmetrically connected to the central positions of the support plates 1.

With the combination of the drawings, the lower end of the supporting plate 1 is fixedly connected with a horizontal I-shaped plate 8, the two ends of the I-shaped plate 8 extend to the outer side of the supporting plate 1, and the upper end of the I-shaped plate 8, which is positioned at the outer side of the supporting plate 1, is provided with a mounting hole which is communicated up and down, so that the position of the supporting plate can be conveniently fixed.

The equipartition has a plurality of arc through-holes of controlling the intercommunication on the lateral wall of backup pad 1, and fixed connection has horizontally steel pipe 3 in the arc through-hole, and the department of buckling fixedly connected with U-shaped return bend 4 of every two adjacent steel pipes 3, and U-shaped return bend 4 corresponds the outside that sets up at two backup pads 1.

A plurality of fins 5 are uniformly distributed and connected on the outer side of the steel pipe 3 between the supporting plates 1, and the fins 5 are connected with the steel pipe 3. Wherein, fin 5 splices on the steel pipe 3 lateral wall, and sets up the arc wall of laminating with steel pipe 3 on the lateral wall of fin 5, sets up the through-hole on the lateral wall of fin 5, and the through-hole in two fins 5 is connected with same U-shaped connecting rod 9, and U-shaped connecting rod 9 runs through the through-hole and threaded connection has fastening nut 10.

Specifically, fixedly connected with rubber abrasionproof pad 11 on the arc wall inner wall of fin 5, and rubber abrasionproof pad 11 is connected with the laminating of the lateral wall of steel pipe 3, through install a plurality of fins 5 on the lateral wall of steel pipe 3, has increased the heat transfer area of whole fin economizer to be convenient for change damaged fin 5.

Preferably, the two steel pipes 3 at the outermost side are respectively connected with a water inlet pipe 6 and a water outlet pipe 7, and a regenerative cycle mechanism is connected between the water inlet pipe 6 and the water outlet pipe 7. Specifically, circulation mechanism includes the box 12 of fixed connection in the inlet tube 6 and the outlet pipe 7 outside, and central fixedly connected with water tank 13 in the box 12, and fixed intercommunication has first water pipe 14 between outlet pipe 7 and the water tank 13, the fixedly connected with pump body 15 on the output lateral wall of water tank 13, the output fixedly connected with second water pipe 16 of the pump body 15, and the one end that the pump body 15 was kept away from to second water pipe 16 is fixed with inlet tube 6 and is communicated.

More specifically, a radiator 17 corresponding to the water tank 13 is fixedly connected to a side wall of the tank 12, the radiator 17 includes a plurality of fins, and the radiator 17 is attached to the side wall of the water tank 13.

Therefore, the water in the economizer is in a flowing state, the vaporization of the water is avoided, a heat return process is added to the cycle, the average heat absorption temperature is improved, and the cycle efficiency is improved.

In the invention, the plurality of fins 5 are arranged on the side wall of the steel pipe 3, so that the heat exchange area of the whole fin coal economizer is increased, and the production efficiency of the fin coal economizer is further improved. Meanwhile, in the process of long-term use of the economizer, impurities in the flue gas easily damage the fins 5, and the damaged fins 5 can be locally replaced through the mounting mechanism between the fins 5 and the steel pipe 3, so that the maintenance is convenient.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

The H-shaped fin economizer is characterized by comprising at least two vertically arranged support plates (1), a horizontal connecting plate (2) is fixedly connected between the two support plates (1), and the two connecting plates (2) are symmetrically connected to the center of each support plate (1);

a plurality of arc-shaped through holes which are communicated left and right are uniformly distributed on the side wall of the supporting plate (1), horizontal steel pipes (3) are fixedly connected in the arc-shaped through holes, and a U-shaped bent pipe (4) is fixedly connected at the bent part of every two adjacent steel pipes (3), wherein the U-shaped bent pipes (4) are correspondingly arranged on the outer sides of the two supporting plates (1);

the outer side of the steel pipe (3) between the two supporting plates (1) is uniformly connected with a plurality of fins (5), the fins (5) are connected with the steel pipe (3), the two outermost steel pipes (3) are respectively connected with a water inlet pipe (6) and a water outlet pipe (7), and a heat circulation mechanism is connected between the water inlet pipe (6) and the water outlet pipe (7).
2. The H-shaped fin economizer according to claim 1, wherein the lower end of the supporting plate (1) is fixedly connected with a horizontal I-shaped plate (8), two ends of the I-shaped plate (8) extend to the outer side of the supporting plate (1), and the upper end of the I-shaped plate (8) positioned on the outer side of the supporting plate (1) is provided with a mounting hole communicated up and down.
3. The H-shaped fin economizer according to claim 1, wherein the fins (5) are spliced on the side wall of the steel pipe (3), an arc-shaped groove attached to the steel pipe (3) is formed in the side wall of each fin (5), through holes are formed in the side wall of each fin (5), the same U-shaped connecting rod (9) is connected in the through holes of the two fins (5), and the U-shaped connecting rod (9) penetrates through the through holes and is in threaded connection with a fastening nut (10).
4. The H-shaped fin economizer according to claim 1, wherein a rubber anti-abrasion pad (11) is fixedly connected to the inner wall of the arc-shaped groove of the fin (5), and the rubber anti-abrasion pad (11) is attached to the outer side wall of the steel pipe (3).
5. The H-shaped fin economizer according to claim 1, wherein the thermal circulation mechanism comprises a box body (12) fixedly connected to the outer sides of the water inlet pipe (6) and the water outlet pipe (7), a water tank (13) is fixedly connected to the inside of the box body (12), a first water pipe (14) is fixedly communicated between the water outlet pipe (7) and the water tank (13), a pump body (15) is fixedly connected to the side wall of the output end of the water tank (13), a second water pipe (16) is fixedly connected to the output end of the pump body (15), and one end, away from the pump body (15), of the second water pipe (16) is fixedly communicated with the water inlet pipe (6).
6. The H-shaped fin economizer according to claim 5, wherein a radiator (17) corresponding to the water tank (13) is fixedly connected to a side wall of the tank body (12).
7. The H-shaped fin economizer according to claim 6, characterized in that the heat sink (17) comprises a plurality of fins, and the heat sink (17) is attached to the side wall of the water tank (13).