CN115342329A

CN115342329A - Steam generator utilizing solid heat storage

Info

Publication number: CN115342329A
Application number: CN202211129645.6A
Authority: CN
Inventors: 魏谭政; 车云霞; 邓亮; 徐子逸; 李挺; 陈巧巧; 陈继煌; 杨汀
Original assignee: Zhejiang Tefu Development Co ltd
Current assignee: Zhejiang Tefu Development Co ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2022-11-15

Abstract

The invention provides a steam generator utilizing solid heat storage, and belongs to the technical field of solid heat storage utilization. A vapor generator utilizing solid heat storage comprises a solid heat storage device, wherein the solid heat storage device is provided with a circulating channel; the heat exchange assembly is arranged in the circulating channel and is provided with an airflow gap channel and a waterway channel which are communicated with the circulating channel; the water outlet of the water tank is communicated with the waterway channel; the inlet of the gas-water separator is communicated with the other end of the waterway channel, and the cylinder body is provided with a steam outlet; wherein, the air current flows upwards in the circulating channel, and the flow cross-sectional area of the air current gap channel is reduced in sequence.

Description

Steam generator utilizing solid heat storage

Technical Field

The invention belongs to the technical field of solid heat storage and utilization, and particularly relates to a steam generator utilizing solid heat storage.

Background

Solid heat storage utilization is common in the field of steam utilization, namely heat is stored in a fixed heat storage body in advance, and when the solid heat storage is needed, the heat is taken out of the fixed heat storage body and is exchanged into water to form steam or hot water for utilization.

And heat exchange efficiency then is relevant with difference in temperature and air velocity, and heated air is when passing through the heat exchanger, with the heat through the heat exchanger send into aquatic, but because the heat of solid heat storage body is limited, in the use, the heat in the solid heat storage body is less and less, leads to whole circulation channel's interior air to cool down gradually, and the air in the circulation channel begins the shrinkage, leads to also can drop through the velocity of flow of heat exchanger to heat exchange efficiency has been reduced.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a steam generator utilizing solid heat storage, and solves the problems that the heat in a solid heat storage body is reduced, the temperature of circulating air is reduced, the total volume of the air is reduced, and the flow speed of the air passing through a heat exchanger is reduced.

The purpose of the invention can be realized by the following technical scheme:

a vapor generator using solid heat storage is characterized by comprising

A solid heat storage device having a circulation channel;

the heat exchange assembly is arranged in the circulating channel and is provided with an airflow gap channel and a waterway channel which are communicated with the circulating channel;

the water outlet of the water tank is communicated with the waterway channel; and

the inlet of the gas-water separator is communicated with the other end of the waterway channel, and the cylinder body is provided with a steam outlet;

wherein, the air current flows upwards in the circulating channel, and the flow cross-sectional area of the air current gap channel is reduced in sequence.

In the above steam generator using solid heat storage, the heat exchange assembly includes at least two heat exchange structures, and the heat exchange structure includes

A housing having a channel;

a first heat exchange tube disposed within the channel, the first heat exchange tube comprising at least one first planar spiral tube section; and

the second heat exchange tube is arranged in the channel and comprises at least one second planar spiral tube section, the second planar spiral tube section is mutually embedded with the first planar spiral tube section, and the airflow gap channel is formed between the first planar spiral tube section and the second planar spiral tube section;

wherein the first heat exchange tube and the second heat exchange tube are used as the waterway channel.

In the steam generator using solid heat storage, the inner ring or/and the outer ring of the shell is/are provided with a heat insulation layer.

In the above steam generator using solid heat storage, the first flat spiral tube and the second flat spiral tube are fixedly connected by a positioning clamp.

In the above steam generator using solid heat storage, a spacer layer is arranged between the inner wall of the channel and the first heat exchange tube or the second heat exchange tube, and the spacer layer is used for fixing the first heat exchange tube and the second heat exchange tube.

The steam generator utilizing the solid heat storage further comprises a cylinder, a vacant channel is formed between the first planar spiral tube and the second planar spiral tube, and the cylinder is arranged in the vacant channel.

In the above steam generator using solid heat storage, the tube center line of the first planar spiral tube and the tube center line of the second planar spiral tube, which are fitted to each other, are substantially in the same plane.

In the above steam generator using solid heat storage, the adjacent first planar spiral tube sections are in abutting contact, and the adjacent second planar spiral tubes are in abutting contact.

In the above-mentioned steam generator who utilizes solid heat-retaining, still include trident pipeline and feed pump, the delivery port of water pitcher pass through the trident pipeline simultaneously with waterway links to each other the delivery port of deareator links to each other, the trident pipeline has the first pipeline of connecting the water pitcher, connects waterway's second pipeline with connect the third pipeline of deareator's delivery port, the second pipeline that the feed pump set up is on.

Compared with the prior art, the invention has the following advantages:

in this application, adopted the air current in the circulating channel to flow upwards, the design that the flow cross section area of air current clearance passageway reduces in proper order, after air current flows in the air current clearance passageway, subsequent flow cross section diminishes to even after air temperature reduces, the volume diminishes, also can guarantee sufficient velocity of flow, thereby can keep the heat exchange efficiency to water.

Drawings

FIG. 1 is a schematic diagram of one configuration of the present application;

FIG. 2 is a schematic diagram of a heat exchange structure of the present application;

FIG. 3 is a side view of the heat exchange structure of the present application;

fig. 4 is a schematic structural diagram of the first heat exchange tube and the second heat exchange tube in the present application.

In the figure, the position of the first and second end faces,

2. a solid heat storage device; 21. a circulation channel; 22. a box body; 23. a circulating fan; 24. a heat storage material;

3. a heat exchange assembly; 31. a heat exchange structure; 311. a housing; 312. a first heat exchange tube; 3121. a first planar helical tube section; 313. a second heat exchange tube; 3131. a second planar helical tube section; 314. an air flow gap channel; 315. a heat-insulating layer; 316. positioning clips; 317. a spacer layer; 318. a cylinder;

4. a water tank;

5. a gas-water separator;

6. a three-way pipeline; 61. a first pipeline; 62. a second pipeline; 63. a third pipeline;

7. a water pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In fig. 1, the arrows at the solid heat storage device indicate the air flow direction.

In fig. 1, the arrows at the fixed heat storage means indicate the direction of water flow.

As shown in fig. 1 to 4, a steam generator using solid heat storage includes a solid heat storage device 2, a heat exchange assembly 3, a water tank 4, and a gas-water separator 5, the solid heat storage device 2 having a circulation channel 21; the heat exchange assembly 3 is arranged in the circulation channel 21, and the heat exchange assembly 3 is provided with an airflow gap channel 314 and a waterway channel which are communicated with the circulation channel 21; the water outlet of the water tank 4 is communicated with the waterway channel; the inlet of the gas-water separator 5 is communicated with the other end of the waterway channel, and the gas-water separator 5 is provided with a steam outlet; wherein the air flow flows upward in the circulation passage 21, and the flow cross-sectional area of the air flow gap passage 314 is sequentially reduced.

In this application, with water input to the waterway passageway in the water pitcher 4 to through heat exchange assemblies with the water in the hot water waterway passageway of the heat heating of storage in the solid heat-retaining device 2, make water become the heating and become steam-water mixture, then with the steam-water mixture input to steam-water separator in, through steam-water separator will separate steam and saturated water, steam is exported from steam water separator 5's steam outlet and is used.

After the solid heat storage device 2 continuously heats the water in the water passage for a period of time, the heat stored in the solid heat storage device 2 is reduced, the temperature difference between the hot air and the heat exchange assembly 3 is reduced, meanwhile, the temperature of the circulating air in the circulating passage 21 is reduced, and the volume is reduced, so that the air flow rate flowing through the air flow gap passage 314 is reduced, and the heat exchange efficiency is influenced.

And in this application, adopted in circulation channel 21 air current to flow upwards, the design that the flow cross section area of air current clearance passageway 314 reduces in proper order, after air current flowed in air current clearance passageway 314, subsequent flow cross section diminishes to even after air temperature reduces, the volume diminishes, also can guarantee sufficient velocity of flow, thereby can keep the heat exchange efficiency to water.

The flow cross-sectional area of the air flow gap channel 314 decreases in the order of the flow direction in the circulation channel 21, which includes two cases, the first: the flow cross-section of the air flow gap channel 314 decreases stepwise in turn, and in the second case, the flow cross-section of the air flow gap channel 314 decreases linearly. In this embodiment, the flow cross-section of the air flow gap channel 314 is gradually decreased in a stepwise manner, which is more convenient for processing the heat exchange assembly 3.

In this embodiment, the solid heat storage device 2 further includes a tank 22, a circulation fan 23, and a heat storage material 24, the circulation passage 21 is located in the tank 22, and the circulation fan 23, the heat storage material 24, and the heat exchange assembly 3 are disposed in the circulation passage 21. Air in the circulation passage 21 is made to flow by the circulation fan 23, the air is heated after passing through the heat storage material 24, and the hot air passes through the heat exchange unit 3 to heat water for use.

Specifically, the heat exchange assembly 3 comprises at least two heat exchange structures 31, wherein each heat exchange structure 31 comprises a shell 311, a first heat exchange pipe 312 and a second heat exchange pipe 313, and the shell 311 is provided with a channel; the first heat exchange tube 312 is disposed within the channel, the first heat exchange tube 312 comprising at least one first planar spiral tube segment 3121; the second heat exchange tube 313 is disposed within the channel, the second heat exchange tube 313 includes at least one second planar spiral section 3131, the second planar spiral section 3131 interfits with the first planar spiral section 3121, the first planar spiral section 3121 and the second planar spiral section 3131 form the air flow gap channel 314 therebetween; wherein the first heat exchange pipe 312 and the second heat exchange pipe 313 serve as the water path channel.

Preferably, the first heat exchange pipe 312 and the second heat exchange pipe 313 are made of copper material.

In this application, hot air is input from one end of the channel of the housing 311, and the other end of the channel is exhausted, while water is input into the first and second

heat exchange tubes

312 and 313, the input air flow passes through the air flow gap channel 314 between the first and second planar

spiral tube sections

3121 and 3131, and the high-temperature air rapidly heats the input water in the first and second

heat exchange tubes

312 and 313.

In this application, the structure that second plane spiral pipe section 3131 and first plane spiral pipe section 3121 gomphosis each other is adopted, in unit volume, compare in traditional single heliciform heat exchange tube, in this application, can have longer pipeline in the unit volume to increased heat transfer area, improved heat exchange efficiency, simultaneously because this design, also prolonged the flow path of water, thereby make water can absorb abundant heat in this casing 311, accelerated the heating efficiency of water.

When a plurality of first planar helical tube sections 3121 and a plurality of second planar helical tube sections 3131 are provided, the number of first planar helical tube sections 3121 and second planar helical tube sections 3131 preferably remains the same. When the plurality of first planar helical tube sections 3121 are juxtaposed, the plurality of second planar helical tubes are juxtaposed.

The size of the air flow gap channel 314 between the first planar spiral pipe 3121 and the second planar spiral pipe 3131 is adjusted according to the actual application scenario. For example, in the present embodiment, the flow cross-sectional area of the air flow gap channel 314 is made smaller in the order of the flow cross-sectional area of the air flow gap channel 314 along the air flow direction.

In addition, the first heat exchange pipe 312 may be designed such that a plurality of first flat spiral pipe sections 3121 are connected in series, and the second heat exchange pipe 313 may be designed such that a plurality of second flat spiral pipe sections 3131 are connected in series.

Specifically, the inner ring or/and the outer ring of the housing 311 is/are provided with an insulating layer 315.

In the present application, the inner ring of the housing 311 has the insulating layer 315 or the outer ring of the housing 311 has the insulating layer 315 or both the inner ring and the outer ring of the housing 311 have the insulating layer 315. The insulating layer 315 may be made of common insulating materials. The housing 311 is a steel-structured collar. In this embodiment, the inner ring of the housing 311 is provided with an insulating layer 315.

Specifically, the first planar coil and the second planar coil are fixedly connected by a positioning clip 316.

The retaining clip 316 is fixedly attached directly to the first planar helical tube 3121 and the second planar helical tube 3131 by welding, thereby maintaining the distance between the first planar helical tube 3121 and the second planar helical tube 3131.

Specifically, a spacing layer 317 is arranged between the inner wall of the channel and the first heat exchange tube 312 or the second heat exchange tube 313, and the spacing layer 317 is used for fixing the first heat exchange tube 312 and the second heat exchange tube 313.

The first and second

heat exchange pipes

312 and 313 can be fixed by providing a spacer 317 between the first or second

heat exchange pipe

312 or 313 and the inner wall of the channel. The first heat exchange pipe 312 and the second heat exchange pipe 313 are separated from the heat insulation layer 315 of the shell 311, so that the temperature of the inner surface of the heat insulation layer 315 is reduced, and a certain heat insulation effect can be achieved. After the spacer layer 317 is used, the cross section of the channel of the shell 311 can be reduced, so that hot air can pass through the first heat exchange pipe 312 and the second heat exchange pipe 313 without being wasted.

In this embodiment, the first heat exchange tube 312 or the second heat exchange tube 313 is connected to the insulating layer 315 through the spacer layer 317. The spacer layer 317 is manufactured by casting.

Specifically, the spiral-type wind power generation device further comprises a cylinder 318, an empty channel is formed between the first planar spiral pipe and the second planar spiral pipe, and the cylinder 318 is arranged in the empty channel.

In this application, since the heat exchange tubes of the first and second

heat exchange tubes

312 and 313 are formed by bending process, the bending angle of the middle position between the first and second planar

spiral tube sections

3121 and 3131 is increased during the spiral arrangement, so that a hollow channel is left in the middle, and by providing one of the pillars 318, the hot air is not passed through the hollow channel, but is passed through only the air flow gap channel 314 between the first and second planar

spiral tube sections

3121 and 3131. The utilization rate of heat can be improved. Meanwhile, after the cylinder 318 is arranged, the sectional area of the air flow gap channel 314 is reduced, which leads to the acceleration of the flow velocity of the air flow in the channel and further improves the heat exchange efficiency.

Specifically, the tube center line of the first planar spiral tube and the tube center line of the second planar spiral tube, which are fitted to each other, are located substantially in the same plane.

Furthermore, the pipe sectional area of the first planar spiral pipe section 3121 is the same as that of the first planar spiral pipe section 3121, the design enables the first planar spiral pipe section 3121 and the second planar spiral pipe section 3131 to be arranged in the same vertical interval, when the plurality of first planar spiral pipe sections 3121 and the plurality of second planar spiral pipe sections 3131 can be arranged in the channel side by side to the maximum extent, the heat exchange area is greatly increased, and the heat exchange effect is better.

Specifically, adjacent the first planar coil section 3121 is in abutting contact and adjacent the second planar coil is in abutting contact.

The structure of the spiral pipe can be more compact, and more first flat spiral pipe sections 3121 and second flat spiral pipe sections 3131 can be placed in a preset space. The heat exchange area can be increased, the length of the waterway channel is increased, and the heat exchange efficiency is better.

Specifically, still include trident pipeline 6 and feed pump 7, the delivery port of water pitcher 4 pass through trident pipeline 6 simultaneously with waterway links to each other the delivery port of deareator 5 links to each other, trident pipeline 6 has the first pipeline 61 of connecting water pitcher 4, connects waterway's second pipeline 62 and connection the third pipeline 63 of deareator 5's delivery port, feed pump 7 sets up on second pipeline 62.

The steam and the saturated water are separated by the steam-water separator, and the steam is output from the steam-water separator 5 for use. And the saturated water can be input into the waterway channel again for continuous use under the action of the feed pump 7. After the feed water pump 7 is started, water in the water tank 4 can be pumped in at the same time, and saturated water in the steam-water separator is pumped in for use. The heat utilization rate is effectively improved.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions relating to "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. Also, the expression "and/or" as used throughout is meant to encompass three alternatives, exemplified by "A and/or B" including alternative A, alternative B, or both alternative A and alternative B. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The above components are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A vapor generator using solid heat storage is characterized by comprising

A solid heat storage device (2), the solid heat storage device (2) having a circulation channel (21);

the heat exchange assembly (3), the heat exchange assembly (3) is arranged in the circulating channel (21), and the heat exchange assembly (3) is provided with an air flow gap channel (314) and a water channel which are communicated with the circulating channel (21);

the water outlet of the water tank (4) is communicated with the waterway channel; and

the inlet of the gas-water separator (5) is communicated with the other end of the waterway channel, and the gas-water separator (5) is provided with a steam outlet;

wherein the air flow in the circulation passage (21) flows upward, and the flow cross-sectional areas of the air flow gap passages (314) decrease in order.

2. Steam generator for heat storage with solid bodies according to claim 1, characterized in that the heat exchange assembly (3) comprises at least two heat exchange structures (31), the heat exchange structures (31) comprising

A housing (311), the housing (311) having a channel;

a first heat exchange tube (312), said first heat exchange tube (312) disposed within said channel, said first heat exchange tube (312) comprising at least one first planar spiral tube segment (3121); and

a second heat exchange tube (313), the second heat exchange tube (313) disposed within the channel, the second heat exchange tube (313) including at least one second planar spiral tube section (3131), the second planar spiral tube section (3131) interfitting with the first planar spiral tube section (3121), the first planar spiral tube section (3121) and the second planar spiral tube section (3131) forming the air flow gap channel (314) therebetween;

wherein the first heat exchange pipe (312) and the second heat exchange pipe (313) are used as the waterway channel.

3. The steam generator utilizing solid heat storage according to claim 2, wherein the inner ring or/and the outer ring of the housing (311) is provided with an insulating layer (315).

4. The vapor generator utilizing solid heat storage according to claim 2, wherein the first and second planar coils are fixedly connected by a positioning clip (316).

5. The vapor generator utilizing solid heat storage according to claim 2, wherein a spacing layer (317) is arranged between the inner wall of the channel and the first heat exchange tube (312) or the second heat exchange tube (313), and the spacing layer (317) is used for fixing the first heat exchange tube (312) and the second heat exchange tube (313).

6. The vapor generator utilizing solid heat storage according to claim 2, further comprising a pillar (318), wherein a vacant channel is formed between the first and second flat spiral tubes, and the pillar (318) is disposed in the vacant channel.

7. The solid heat storage steam generator as claimed in claim 2, wherein the tube center line of the first flat spiral tube and the tube center line of the second flat spiral tube are substantially in the same plane.

8. The vapor generator for utilizing solid heat storage according to claim 2, characterized in that adjacent to the first planar helical tube section (3121) is in abutting contact and adjacent to the second planar helical tube section (3131) is in abutting contact.

9. The steam generator storing heat by using solids according to claim 1, further comprising a trifurcate pipeline (6) and a feed water pump (7), wherein a water outlet of the water tank (4) is connected with the waterway channel through the trifurcate pipeline (6), a water outlet of the moisture separator (5) is connected, the trifurcate pipeline (6) has a first pipeline (61) connected with the water tank (4), a second pipeline (62) connected with the waterway channel, and a third pipeline (63) connected with the water outlet of the moisture separator (5), and the feed water pump (7) is disposed on the second pipeline (62).