CN213902021U

CN213902021U - Modular air-smoke heat exchanger

Info

Publication number: CN213902021U
Application number: CN202023202801.6U
Authority: CN
Inventors: 田永兰; 姚亮; 郝志鹏; 薛英喜; 洪增元
Original assignee: Harbin Turbine Auxiliary Equipment Engineering Co Ltd
Current assignee: Harbin Turbine Auxiliary Equipment Engineering Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-06
Anticipated expiration: 2030-12-25

Abstract

A modular air-smoke heat exchanger relates to a heat exchanger. The utility model discloses a solve current plate heat exchanger structure, wasted a large amount of metal material, the cost is improved, and its heat transfer performance can not obtain abundant performance, and the heat transfer is long, the unsatisfactory problem of heat transfer effect. The utility model discloses an import hydroecium, the export hydroecium, two tube sheets, four steel pipes, the multiunit heat exchange tube, a plurality of transition hydroecium and a plurality of division board, four steel pipe parallel arrangement are between two tube sheets, the outside terminal surface of one side tube sheet has set gradually the import hydroecium on the width direction, a plurality of transition hydroecium and export hydroecium, the outside terminal surface of opposite side tube sheet has set gradually a plurality of transition hydroeciums along width direction, the multiunit heat exchange tube sets up side by side between two tube sheets along width direction, the import hydroecium on multiunit heat exchange tube will one side tube sheet, a plurality of transition hydroecium and export hydroecium and a plurality of transition hydroecium on the opposite side tube sheet communicate in proper order. The utility model is used for the heat transfer energy storage.

Description

Modular air-smoke heat exchanger

Technical Field

The utility model relates to a heat exchanger, concretely relates to modular air gas heater.

Background

At present, low-temperature flue gas such as coal-fired flue gas tail gas and petrochemical enterprise flue gas contains huge waste heat resources, and is often abandoned due to difficult utilization. A large amount of waste heat can be recovered from low-temperature flue gas, and the recovery rate of the waste heat can be increased by 3% when the temperature of the flue gas is reduced by 10 ℃. The air-smoke heat exchanger is a heat exchange device for heating low-temperature fluid by using heat of high-temperature fluid, and when the air-smoke heat exchanger is in operation, wet air or smoke is used as hot fluid to exchange heat with cold fluid, and the wet air or smoke transfers the heat to the cold fluid, so that the aim of cooling is fulfilled. At present, most of MGGH systems with flue gas condensers put into operation in the market are fluoroplastic products, but the fluoroplastic has low heat conductivity coefficient, large heat exchanger volume and large flue gas resistance; the existing flue gas heat exchanger of the other hand is mostly a plate heat exchanger structure, and due to the limitation of the connection mode, the heat exchange performance is further improved, the volume of the manufactured heat exchanger can only be increased, a large amount of metal materials are wasted, the cost is improved, the heat exchange performance cannot be fully exerted, the heat exchange time is long, and the heat exchange effect is not ideal. The reduction of the smoke temperature is a general demand of power plant smoke plume treatment, and the market demand is very large due to the consideration of waste heat recovery. In order to adapt to the background, the modular air-flue gas heat exchanger structure is provided, so that the low-temperature waste heat in a flue gas system is recovered, and the economical efficiency of a power plant is improved; meanwhile, the modular structure can be assembled in series and parallel according to different requirements of users, and efficient utilization of the heat exchanger module is realized.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve current plate heat exchanger structure, owing to receive the limitation of connected mode, want further improvement heat transfer performance, can only increase the volume of the heat exchanger of making, wasted a large amount of metal material, the cost is improved, and its heat transfer performance can not obtain abundant performance, the heat transfer is long, the unsatisfactory problem of heat transfer effect, and then provide a modular air gas heater.

The utility model discloses a solve the technical scheme that above-mentioned technical problem took and be:

a modular air-flue gas heat exchanger comprises an inlet water chamber, an outlet water chamber, two tube plates, four steel tubes, a plurality of groups of heat exchange tubes, a plurality of transition water chambers and a plurality of partition plates, wherein the two tube plates are arranged oppositely, the four steel tubes are arranged between the two tube plates in parallel, each steel tube is respectively and vertically arranged at one corner of the tube plates, the outer end face of one tube plate is sequentially provided with the inlet water chamber, the transition water chambers and the outlet water chamber along the width direction, the inlet water chamber, the transition water chamber and the outlet water chamber are respectively arranged along the height direction of the tube plates, the outer end face of the other tube plate is sequentially provided with a plurality of transition water chambers along the width direction, each transition water chamber is respectively arranged along the height direction of the tube plates, the plurality of groups of heat exchange tubes are respectively arranged between the two tube plates along the width direction, each group of heat exchange tubes is respectively arranged along the height direction of the tube plates, and the plurality of groups of heat exchange tubes are used for connecting the inlet water chamber, the plurality of the heat exchange tubes on one tube plate, The plurality of transition water chambers are communicated with the outlet water chamber and the plurality of transition water chambers on the tube plate at the other side in sequence.

Compared with the prior art, the utility model the beneficial effect who contains is:

1. the utility model has simple structure, convenient manufacture and installation;

2. the air-smoke heat exchanger has the advantages of high heat conductivity coefficient of materials, small smoke pressure drop, small equipment volume, more compact structure, reduced cost input and good economical efficiency;

3. the water chamber of the heat exchanger is designed into a semi-cylindrical structure, and the strength of the water chamber can be effectively enhanced by arranging the multi-flow flue gas heat exchanger on the tube side;

4. the modular structure of the heat exchanger is flexible to assemble and can meet the requirements of different users.

Drawings

FIG. 1 is a front view of the overall structure of two modular air flue gas heat exchangers in parallel;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a left side cross-sectional view of FIG. 1;

FIG. 4 is a top view of FIG. 1;

the direction of the arrows in the figure indicates the direction of the flue gas flow.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, the modular air-flue gas heat exchanger according to the present embodiment includes an inlet water chamber 10, an outlet water chamber 11, two tube sheets 1, four steel tubes 4, a plurality of sets of heat exchange tubes 6, a plurality of transition water chambers 12 and a plurality of partition plates 3, the two tube sheets 1 are disposed oppositely, the four steel tubes 4 are disposed in parallel between the two tube sheets 1, each steel tube 4 is vertically disposed at one corner of the tube sheet 1, the inlet water chamber 10, the plurality of transition water chambers 12 and the outlet water chamber 11 are sequentially disposed on the outer side end surface of one tube sheet 1 along the width direction, the inlet water chamber 10, the transition water chambers 12 and the outlet water chamber 11 are respectively disposed along the height direction of the tube sheet 1, the plurality of transition water chambers 12 are sequentially disposed on the outer side end surface of the other tube sheet 1 along the width direction, each transition water chamber 12 is disposed along the height direction of the tube sheet 1, the plurality of sets of heat exchange tubes 6 are disposed in parallel between the two tube sheets 1 along the width direction, each group of heat exchange tubes 6 are respectively arranged along the height direction of the tube plate 1, and the inlet water chamber 10, the plurality of transition water chambers 12 and the outlet water chamber 11 on the tube plate 1 on one side and the plurality of transition water chambers 12 on the tube plate 1 on the other side are sequentially communicated by the groups of heat exchange tubes 6.

The utility model aims to solve the technical problem that a module type air flue gas heat exchanger structure that structural connection is reasonable, operation process safety and stability, modularization equipment are nimble, can effectively improve heat exchange efficiency, reduce the cost and drop into can realize the flexibility equipment according to different user demands through the modularization. The structure of the heat exchanger is selected to be a horizontal structure, the shell side tube plate 1 is a square structure, and the water chamber is a semi-cylindrical structure. The heat exchange tube 6 is made of 2205 duplex stainless steel, so that the corrosion effect of the flue gas can be effectively reduced, the heat conductivity coefficient is high, and the heat exchange performance of the heat exchanger is improved.

Under the operating condition, the flue gas enters from one side of the shell side channel, and the transverse heat exchange tube 6 exchanges heat with cold fluid in the tube and is discharged from an outlet at the other side of the shell side channel. Cold fluid enters from the inlet water chamber 10, a plurality of processes are arranged on the side of the tube to circularly flow, so that the heat exchange area is increased, and finally the cold fluid exchanges heat with flue gas outside the tube and is discharged through the connecting tube of the outlet water chamber 11. The heat exchange process is realized by heat transfer and convection of the heat exchange tube 6, the temperature of cold fluid is gradually increased, and the temperature of hot fluid is gradually reduced.

The heat exchange tubes 6 are arranged at 30 degrees and are provided with a plurality of flows, so that the structure of the heat exchanger is more compact.

The shell side is provided with the partition plate 3, so that the flue gas can more uniformly pass through the heat exchange tube 6, and the heat exchange area is increased. Four steel pipes 4 are arranged at four corners of the heat exchanger tube plate 1, and the steel pipes 4 penetrate through the supporting plate 2 and the partition plate 3 to be welded with the tube plate 1, so that the heat exchanger is supported. Under the operating condition, the flue gas and the cold fluid conduct and carry out heat convection through the heat exchange tube 6, the temperature of the cold fluid is gradually increased, the temperature of the hot fluid is gradually reduced, and the heat exchange process is realized.

The modular air flue gas heat exchanger is simple and compact in structure, small in occupied area, good in economical efficiency, convenient to manufacture and process, safe and stable in the heat exchange process, convenient and flexible to assemble, capable of meeting requirements of different users, capable of effectively improving the heat exchange performance of the heat exchanger, capable of recycling low-temperature waste heat in a flue gas system and capable of improving the economical efficiency of a power plant.

The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, in the present embodiment, a plurality of partition plates 3 are uniformly distributed between two tube plates 1 in parallel, the partition plates 3 are fixedly connected with four steel tubes 4 through support plates 2, a plurality of groups of heat exchange tubes 6 are inserted into the partition plates 3, and a support seat 8 is fixedly connected to the lower end of each partition plate 3. Other components and connection modes are the same as those of the first embodiment.

The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and the support seat 8 of the present embodiment is made of an i-beam. Other components and connection modes are the same as those of the second embodiment.

The supporting seat 8 is welded and fixed with the supporting plate 2 to realize free and flexible serial-parallel connection assembly of a plurality of heat exchanger modules.

The fourth concrete implementation mode: referring to fig. 1 to 4, the present embodiment is described, in which water receiving trays 7 are disposed between the tube plate 1 and the adjacent partition plate 3 and between the two adjacent partition plates 3, and a water receiving tray connecting pipe 9 is connected to the water receiving tray 7. Other components and connection modes are the same as those of the second embodiment.

The bottom of the flue gas heat exchanger is provided with a water receiving disc 7, and the bottom of the flue gas heat exchanger is sealed into a whole by welding with the tube plate 1, the supporting plate 2 and the division plate 3, so that condensed water is prevented from flowing out of the heat exchanger after flue gas condensation.

The fifth concrete implementation mode: in the present embodiment, the cross-sectional shape of the water pan 7 is an inverted triangle, and the water pan connection pipe 9 is disposed on the end surface of one end of the water pan 7. The other components and the connection mode are the same as those of the fourth embodiment.

The water pan 7 is formed by welding four steel plates, one side of the water pan is connected with a water pan connecting pipe 9 for draining water, and the condensed water level exceeds a water outlet and is discharged through the water pan connecting pipe 9.

The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 to 4, and the number of the partition plates 3 in the present embodiment is three. Other components and connection modes are the same as those of the second embodiment.

The seventh embodiment: referring to fig. 1 to 4, the embodiment is described, in which two water inlets 14 are formed in the inlet water chamber 10 along the height direction, and two water outlets 15 are formed in the outlet water chamber 11 along the height direction. Other components and connection modes are the same as those of the first embodiment.

Two water inlets 14 are provided to increase the cold fluid inlet flow.

The specific implementation mode is eight: referring to fig. 1 to 4, the embodiment is described, in which a water inlet flange 5 is provided on the water inlet 14, and a water outlet flange 13 is provided on the water outlet 15. The other components and the connection mode are the same as those of the seventh embodiment.

The specific implementation method nine: referring to fig. 1 to 4, the present embodiment is described, where the number of the plurality of sets of heat exchange tubes 6 is six, the number of the plurality of transition water chambers 12 on the tube plate 1 on one side is two, the number of the plurality of transition water chambers 12 on the tube plate 1 on the other side is three, one end of the first set of heat exchange tubes 6 is communicated with the inlet water chamber 10, the other end of the first set of heat exchange tubes 6 is communicated with the first transition water chamber 12 on the tube plate 1 on the other side, one end of the second set of heat exchange tubes 6 is communicated with the first transition water chamber 12 on the tube plate 1 on one side, the other end of the second set of heat exchange tubes 6 is communicated with the first transition water chamber 12 on the tube plate 1 on the other side, one end of the third set of heat exchange tubes 6 is communicated with the second transition water chamber 12 on the tube plate 1 on one side, the other end of the fourth set of heat exchange tubes 6 is communicated with the second transition water chamber 12 on the tube plate 1 on one side, the other end of the fourth group of heat exchange tubes 6 is communicated with the second transition water chamber 12 on the tube plate 1 at the other side, one end of the fifth group of heat exchange tubes 6 is communicated with the second transition water chamber 12 on the tube plate 1 at one side, the other end of the fifth group of heat exchange tubes 6 is communicated with the third transition water chamber 12 on the tube plate 1 at the other side, one end of the sixth group of heat exchange tubes 6 is communicated with the outlet water chamber 11, and the other end of the sixth group of heat exchange tubes 6 is communicated with the third transition water chamber 12 on the tube plate 1 at the other side. Other components and connection modes are the same as those of the first embodiment.

The design is such that the inlet water chamber 10, the plurality of transition water chambers 12 and the outlet water chamber 11 on the tube plate 1 on one side and the plurality of transition water chambers 12 on the tube plate 1 on the other side are sequentially communicated through the plurality of groups of heat exchange tubes 6.

The first transition water chamber 12 and the third transition water chamber 12 on the tube plate 1 on the other side are large water chambers, and the second transition water chamber 12 on the tube plate 1 on the other side is a small water chamber.

The detailed implementation mode is ten: referring to fig. 1 to 4, the inlet header 10, the outlet header 11, and the transition header 12 of the present embodiment have a semi-cylindrical shape. The other components and the connection mode are the same as those of the ninth embodiment.

The water chamber of the heat exchanger is designed into a semi-cylindrical structure, the strength of the cylinder body of the water chamber can be increased, the thickness of the material of the cylinder body is reduced, the cost of the heat exchanger is reduced, and meanwhile, a pass partition plate is not required to be arranged on the pipe side, so that the occurrence of fluid short circuit caused by the leakage of the pass partition plate is effectively avoided.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. The utility model provides a modular air gas heater which characterized in that: the modular air flue gas heat exchanger comprises an inlet water chamber (10), an outlet water chamber (11), two tube plates (1), four steel tubes (4) and a plurality of groups of heat exchange tubes (6), a plurality of transition water chambers (12) and a plurality of partition plates (3), wherein the two tube plates (1) are oppositely arranged, the four steel tubes (4) are arranged between the two tube plates (1) in parallel, each steel tube (4) is respectively and vertically arranged at one corner part of each tube plate (1), the outer side end face of one tube plate (1) is sequentially provided with the inlet water chamber (10), the transition water chambers (12) and the outlet water chamber (11) along the width direction, the inlet water chamber (10), the transition water chambers (12) and the outlet water chamber (11) are respectively arranged along the height direction of the tube plates (1), the outer side end face of the other tube plate (1) is sequentially provided with the transition water chambers (12) along the width direction, and each transition water chamber (12) is respectively arranged along the height direction of the tube plates (1), the heat exchange tubes (6) are arranged between the two tube plates (1) in parallel along the width direction, each heat exchange tube (6) is arranged along the height direction of the tube plate (1), and the heat exchange tubes (6) sequentially communicate an inlet water chamber (10), a plurality of transition water chambers (12) and an outlet water chamber (11) on the tube plate (1) on one side and a plurality of transition water chambers (12) on the tube plate (1) on the other side.

2. The modular air-flue gas heat exchanger according to claim 1, characterized in that: a plurality of partition plates (3) are uniformly distributed between the two tube plates (1) in parallel, the partition plates (3) are fixedly connected with four steel tubes (4) through supporting plates (2), a plurality of groups of heat exchange tubes (6) are inserted into the partition plates (3), and supporting seats (8) are fixedly connected to the lower ends of the partition plates (3).

3. The modular air-flue gas heat exchanger according to claim 2, characterized in that: the supporting seat (8) is made of I-shaped steel.

4. The modular air-flue gas heat exchanger according to claim 2, characterized in that: and water receiving trays (7) are arranged between the tube plate (1) and the adjacent partition plates (3) and between the two adjacent partition plates (3), and the water receiving trays (7) are connected with water receiving tray connecting pipes (9).

5. The modular air-flue gas heat exchanger according to claim 4, characterized in that: the cross section of the water receiving tray (7) is in an inverted triangle shape, and a water receiving tray connecting pipe (9) is arranged on the end face of one end of the water receiving tray (7).

6. The modular air-flue gas heat exchanger according to claim 2, characterized in that: the number of the partition plates (3) is three.

7. The modular air-flue gas heat exchanger according to claim 1, characterized in that: two water inlets (14) are formed in the inlet water chamber (10) in the height direction, and two water outlets (15) are formed in the outlet water chamber (11) in the height direction.

8. The modular air-flue gas heat exchanger according to claim 7, characterized in that: the water inlet (14) is provided with a water inlet flange (5), and the water outlet (15) is provided with a water outlet flange (13).

9. The modular air-flue gas heat exchanger according to claim 1, characterized in that: the number of the multiple groups of heat exchange tubes (6) is six, the number of the multiple transition water chambers (12) on the tube plate (1) at one side is two, the number of the multiple transition water chambers (12) on the tube plate (1) at the other side is three, one end of the first group of heat exchange tubes (6) is communicated with the inlet water chamber (10), the other end of the first group of heat exchange tubes (6) is communicated with the first transition water chamber (12) on the tube plate (1) at the other side, one end of the second group of heat exchange tubes (6) is communicated with the first transition water chamber (12) on the tube plate (1) at one side, the other end of the second group of heat exchange tubes (6) is communicated with the first transition water chamber (12) on the tube plate (1) at the other side, one end of the third group of heat exchange tubes (6) is communicated with the first transition water chamber (12) on the tube plate (1) at one side, the other end of the third group of heat exchange tubes (6) is communicated with the second transition water chamber (12) on the tube plate (1) at the other side, one end of a fourth group of heat exchange tubes (6) is communicated with a second transition water chamber (12) on the tube plate (1) at one side, the other end of the fourth group of heat exchange tubes (6) is communicated with the second transition water chamber (12) on the tube plate (1) at the other side, one end of a fifth group of heat exchange tubes (6) is communicated with the second transition water chamber (12) on the tube plate (1) at one side, the other end of the fifth group of heat exchange tubes (6) is communicated with a third transition water chamber (12) on the tube plate (1) at the other side, one end of the sixth group of heat exchange tubes (6) is communicated with an outlet water chamber (11), and the other end of the sixth group of heat exchange tubes (6) is communicated with the third transition water chamber (12) on the tube plate (1) at the other side.

10. The modular air-to-flue gas heat exchanger of claim 9, wherein: the inlet water chamber (10), the outlet water chamber (11) and the transition water chamber (12) are in the shape of half cylinders.