CN216952990U

CN216952990U - Low-pressure high-temperature steam module

Info

Publication number: CN216952990U
Application number: CN202220242984.4U
Authority: CN
Inventors: 毛久富
Original assignee: Xinnengke Electric Co ltd
Current assignee: Xinnengke Electric Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-07-12
Anticipated expiration: 2032-01-28

Abstract

The utility model discloses a low-pressure high-temperature steam module, which comprises: the inner part of the shell is divided into a heat exchange chamber and a combustion chamber which are communicated from top to bottom in space; the combustion mechanism is arranged in the combustion chamber; the heat exchange mechanism is arranged in the heat exchange chamber and comprises a first heat exchange tube layer and a second heat exchange tube layer, the first heat exchange tube layers are arranged up and down and are sequentially connected, fluid flows from the upper layer to the lower layer in the first heat exchange tube layers in sequence, the second heat exchange tube layer is connected with the tail end of the first heat exchange tube layer, at least one second heat exchange tube layer is positioned above the first heat exchange tube layer, and the tail end of the second tube layer is a steam outlet; after water enters the heat exchange mechanism, the water flows rapidly on the first heat exchange tube layer, and then the steam generated is subjected to water-vapor separation by utilizing the relative mounting positions of the second heat exchange tube layer and the first heat exchange tube layer, so that the reduction of the liquid water content before the steam is discharged is ensured.

Description

Low-pressure high-temperature steam module

Technical Field

The utility model relates to steam generation equipment, in particular to a low-pressure high-temperature steam module.

Background

In the existing steam generating equipment in the market, water generally flows from bottom to top in a heat exchange mechanism in the existing steam generating equipment, and is discharged after being heated to a steam state. The water flows slowly in the heat exchange mechanism, the water pressure is high, and the heat exchange efficiency is low. Some heat exchange mechanisms in steam generation equipment, rivers flow from top to bottom and heat, and water pressure is low like this, and the velocity of flow is fast, and when steam was discharged, can contain a large amount of liquid water in the steam, and such heat exchange efficiency is also low, and the power consumption is great.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least in part, one of the above-mentioned problems in the related art. Therefore, the utility model provides a low-pressure high-temperature steam module.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the low-pressure high-temperature steam module according to the present invention comprises:

the internal part of the shell is spatially divided into a heat exchange chamber and a combustion chamber which are communicated from top to bottom;

a combustion mechanism mounted within the combustion chamber;

the heat exchange mechanism is installed in the heat exchange chamber, the heat exchange mechanism comprises a first heat exchange tube layer and a second heat exchange tube layer, the first heat exchange tube layer is vertically arranged and sequentially connected, fluid flows from the upper layer to the lower layer in the first heat exchange tube layer, the second heat exchange tube layer is connected with the tail end of the first heat exchange tube layer and is at least one layer, the second heat exchange tube layer is located above the first heat exchange tube layer, and the tail end of the second heat exchange tube layer is a steam outlet.

The low-pressure high-temperature steam module provided by the embodiment of the utility model at least has the following beneficial effects: after water enters the heat exchange mechanism, the water flows rapidly on the first heat exchange tube layer, and then the steam generated is subjected to water-vapor separation by utilizing the relative mounting positions of the second heat exchange tube layer and the first heat exchange tube layer, so that the reduction of the liquid water content before the steam is discharged is ensured.

According to some embodiments of the utility model, the heat exchange mechanism is provided with two or three first heat exchange tube layers which are sequentially connected from top to bottom, the second heat exchange tube layer is positioned above the uppermost or second first heat exchange tube layer, and the second heat exchange tube layer is connected with the first heat exchange tube layer positioned at the lowermost layer.

According to some embodiments of the utility model, the second heat exchange tube layer and the first heat exchange tube layer positioned at the lowest layer are communicated through a connecting tube, and a spoiler is installed in the connecting tube.

According to some embodiments of the utility model, the spoiler is helical.

According to some embodiments of the utility model, the connecting tube is straight tubular or S-shaped.

According to some embodiments of the utility model, the heat exchanger further comprises a condensing mechanism, the condensing mechanism is installed above the heat exchange chamber, a condensing pipe is arranged in the condensing mechanism, and the condensing pipe is connected with a water inlet of the heat exchange mechanism.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the overall internal structure;

FIG. 2 is a schematic view of one embodiment of the connecting tube of the present invention;

FIG. 3 is a schematic view of another embodiment of the connecting tube of the present invention;

fig. 4 is a schematic view of the internal structure of the connection pipe.

Reference numerals: a housing 100; a heat exchange chamber 101; a combustion chamber 102; a combustion mechanism 200; a heat exchange mechanism 300; a water inlet 301; a vapor vent 302; a first heat exchange tube layer 310; a second heat exchange tube layer 320; a connection pipe 330; a spoiler 340; a condensing mechanism 400; a condenser tube 410.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The utility model relates to a low-pressure high-temperature steam module which comprises a shell 100, a combustion mechanism 200 and a heat exchange mechanism 300.

As shown in fig. 1, the combustion mechanism 200 and the heat exchange mechanism 300 are installed inside the casing 100. The interior of the casing 100 is spatially divided into a heat exchange chamber 101 and a combustion chamber 102, which are communicated with each other, and the heat exchange chamber 101 is located above the combustion chamber 102. It should be noted that, the heat exchange chamber 101 and the combustion chamber 102 are defined herein only as relative spatial distribution concepts, there is no specific range boundary between the heat exchange chamber 101 and the combustion chamber 102, and the heat exchange chamber 101 and the combustion chamber 102 are used to illustrate the installation positions of the heat exchange mechanism 300 and the combustion mechanism 200. The combustion mechanism 200 is installed in the combustion chamber 102, the heat exchange mechanism 300 is installed in the heat exchange chamber 101, that is, in the casing 100, and the heat exchange mechanism 300 is located above the combustion mechanism 200. The combustion mechanism 200 is a gas burner used in a steam plant. The combustion mechanism 200 combusts the fuel gas to produce high temperature flue gas. Heat exchange mechanism 300 includes a first heat exchange tube layer 310 and a second heat exchange tube layer 320. The first heat exchange tube layer 310 may be one layer or multiple layers, preferably, the first tube layer is two layers or three layers, each first heat exchange tube layer 310 is distributed from top to bottom and is connected between the adjacent first heat exchange tube layers 310, that is, each first heat exchange tube layer 310 is connected in series. The water inlet 301 is disposed at the uppermost first heat exchange tube layer 310. At least one layer of the second heat exchange tube layer 320 is disposed, and at least one layer of the second heat exchange tube layer 320 is located above the first heat exchange tube layer 310. In this embodiment, as shown in fig. 1 and fig. 2, three heat exchange tube layers and a second heat exchange tube layer 320 are provided, the second heat exchange tube layer 320 is located above the uppermost heat exchange tube layer, and the second heat exchange tube layer 320 is connected to the first heat exchange tube layer 310 on the lowermost layer. The tail end of the second heat exchange tube layer 320 is the steam outlet 302.

During operation, the combustion mechanism 200 combusts the fuel gas to generate high-temperature flue gas which flows upwards, and the high-temperature flue gas contacts with the outer wall of the heat exchange mechanism 300 in the heat exchange chamber 101. The external water source is connected with the heat exchange mechanism 300 and connected with the water inlet 301 of the first heat exchange tube layer 310 on the uppermost layer. Water enters the first heat exchange tube layer 310 on the uppermost layer, then downward toward the second in proper order, the first heat exchange tube layer 310 of the third layer flows, the pipe wall and the high-temperature flue gas through the first heat exchange tube layer 310 in the flowing process exchange heat, water is gradually heated to the steam state, steam flows from the tail end of the first heat exchange tube layer 310 on the lowermost layer toward the second heat exchange tube layer 320, namely, steam upwards climbs to the second heat exchange tube layer 320, steam continues to exchange heat on the second heat exchange tube layer 320, and finally, the steam is discharged through the steam outlet 302 to be used by a user. In the process that the steam climbs from the first heat exchange tube layer 310 on the lowest layer to the second heat exchange tube layer 320, the liquid water which is not changed into the steam state flows back to the first heat exchange tube layer 310 on the lowest layer, so that the liquid water is ensured to be fully heated to the steam state and then is discharged through the second heat exchange tube layer 320.

In some embodiments of the present invention, the second heat exchange tube layer 320 is connected to the first heat exchange tube layer 310 located at the lowest layer, and the two layers are communicated with each other through a connection tube 330. As shown in fig. 4, a spoiler 340 is installed in the connection pipe 330. In this embodiment, the spoiler 340 is spirally inserted into the connecting pipe 330. When steam climbs from the first heat exchange tube layer 310 of the lowermost layer to the second heat exchange tube layer 320 through the connecting tube 330, the steam can climb spirally along the spoiler 340, and can be in full contact with the spoiler 340 while climbing, so that liquid water remained in the steam is attached to the spoiler 340, the liquid water flows back along the spoiler 340 towards the first heat exchange tube layer 310, the spoiler 340 can also heat the liquid water in the flowing process, and the spoiler 340 is used for fully separating the liquid water to continue the heating treatment. As shown in fig. 2, the connection pipe 330 may be in a straight pipe shape or an S-shaped pipe shape as shown in fig. 3. The S-shaped connection pipe 330 can increase the path for the steam to flow from the first heat exchange pipe layer 310 to the second heat exchange pipe layer 320, further ensuring the separated heating of the liquid water in the steam.

In some embodiments of the present invention, a condensing mechanism 400 is further installed on the upper portion of the housing 100, the condensing mechanism 400 is communicated with the heat exchange chamber 101, and after the flue gas exchanges heat with the heat exchange mechanism 300 in the heat exchange chamber 101, the flue gas flows to the condensing mechanism 400 for cooling. Wherein, be equipped with condenser pipe 410 in the condensation mechanism 400, condenser pipe 410 is connected with heat exchange mechanism 300's water inlet 301, and the condenser pipe 410 of earlier flowing through is gone into before heat exchange mechanism 300 to water, and water carries out the heat transfer through condenser pipe 410 and flue gas, cools off the flue gas on the one hand, and on the other hand supplies heat exchange mechanism 300 after preheating to water again, improves heat exchange efficiency.

Preferably, fins are laid on the outer surfaces of the first heat exchange tube layer 310, the second heat exchange tube layer 320 and the condensing tube 410 to increase the heat exchange area.

Furthermore, the terms "first", "second" and "first" 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 one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description herein, references to the description of "some specific embodiments" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A low pressure high temperature steam module, comprising:

the device comprises a shell (100), wherein the interior of the shell (100) is spatially divided into a heat exchange chamber (101) and a combustion chamber (102) which are communicated from top to bottom;

a combustion mechanism (200), said combustion mechanism (200) being mounted within said combustion chamber (102);

heat exchange mechanism (300), install heat exchange mechanism (300) in heat transfer chamber (101), heat exchange mechanism (300) include first heat transfer pipe layer (310) and second heat transfer pipe layer (320), and is a plurality of first heat transfer pipe layer (310) is arranged from top to bottom and is connected gradually, and the fluid is in flow down the layer by the upper strata in first heat transfer pipe layer (310) in proper order, second heat transfer pipe layer (320) with the end-to-end connection of first heat transfer pipe layer (310), and at least one deck second heat transfer pipe layer (320) are located first heat transfer pipe layer (310) top, the tail end on second heat transfer pipe layer is steam outlet (302).

2. The low pressure, high temperature steam module of claim 1, wherein: the heat exchange mechanism (300) is provided with two or three layers of first heat exchange tube layer (310) which are sequentially connected from top to bottom, the second heat exchange tube layer (320) is positioned on the uppermost layer or the second layer of the first heat exchange tube layer (310) and the second heat exchange tube layer (320) is connected with the first heat exchange tube layer (310) which is positioned on the lowermost layer.

3. The low pressure high temperature steam module of claim 1 or 2, wherein: the second heat exchange tube layer (320) is communicated with the first heat exchange tube layer (310) located on the lowest layer through a connecting tube (330), and a spoiler (340) is installed in the connecting tube (330).

4. The low pressure high temperature steam module of claim 3, wherein: the spoiler (340) is spiral-shaped.

5. The low pressure high temperature steam module of claim 3, wherein: the connecting pipe (330) is in a straight pipe shape or an S shape.

6. The low pressure, high temperature steam module of claim 1, wherein: the condensation mechanism (400) is arranged above the heat exchange chamber (101), a condensation pipe (410) is arranged in the condensation mechanism (400), and the condensation pipe (410) is connected with a water inlet (301) of the heat exchange mechanism (300).