Condenser for generating low-pressure and high-temperature steam for steam boiler
By designing a condenser including a shell, an upper smoke chamber, a lower smoke chamber, a membrane wall and a snake-shaped heat exchange tube group in a small steam generator, the problem that the prior art cannot effectively generate low-pressure and high-temperature steam is solved, and efficient heat exchange effect is achieved and the modification cost is reduced.
Patent Information
- Application Number
- CN202421598249.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-08
AI Technical Summary
Existing small steam generators are unable to effectively generate low-pressure and high-temperature steam, and are costly when trying to renovate the furnace body to achieve this goal.
A condenser for steam boiler is designed, including a shell, an upper smoke chamber, a lower smoke chamber, a membrane wall and a serpentine heat exchange tube group. By exchanging the steam output from the furnace body with the high-temperature flue gas in the serpentine heat exchange tube group, low-pressure and high-temperature steam is formed.
The production of low-pressure and high-temperature steam on existing steam generators is achieved, which improves heat exchange efficiency and does not require large-scale transformation of the furnace body, reducing costs.
Smart Images
Figure CN222881724U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a steam generator, in particular to a condenser for generating low-pressure and high-temperature steam used in a steam boiler, belonging to the technical field of heat exchangers. Background Art
[0002] Small steam generators have many application scenarios in industrial and civilian fields. Chinese patent application No. 2023200145912 discloses a vertical steam generator, which includes a burner, a furnace body and a condenser installed behind the furnace body from front to back. Water enters the furnace body interlayer through the burner interlayer from the heat exchange tube of the condenser. The fuel flows into the furnace body in the burner for heat exchange and is discharged after passing through the condenser. The condenser effectively reduces the exhaust gas temperature and preheats the incoming water. The vertical steam generator outputs steam from the top of the furnace body, but in some applications, users hope to provide low-pressure and high-temperature steam. The above structure cannot achieve the requirements of low-pressure and high-temperature steam generation. If the steam output from the furnace body is passed through the smoke chamber in the furnace body through the heat exchange tube, the furnace body needs to be significantly modified, which is costly. Therefore, how to achieve low-pressure and high-temperature steam on the existing steam generator is a problem that needs to be solved. Summary of the invention
[0003] The utility model aims to enable the current small steam generator to produce low-pressure and high-temperature steam.
[0004] To achieve the purpose of the utility model, the following technical scheme is adopted: a condenser for generating low-pressure and high-temperature steam for a steam boiler, comprising a shell, a smoke inlet and a smoke outlet are provided on the shell, the smoke inlet is connected to the smoke outlet of a steam generator furnace body, an upper smoke chamber and a lower smoke chamber are arranged in the shell, the smoke outlet is located on the rear end surface of the shell, the smoke inlet is located on the upper front end surface of the shell, a first serpentine fin heat exchange tube group is installed in the upper smoke chamber, the steam inlet is located on the lower port of the first serpentine fin heat exchange tube group, the steam outlet is located on the upper port of the serpentine fin heat exchange tube group, the lower front part of the upper smoke chamber is communicated with the lower smoke chamber, a second serpentine fin heat exchange tube group is installed in the lower smoke chamber, the second serpentine fin heat exchange tube group is located below the smoke outlet, and the smoke outlet is located on the lower smoke chamber.
[0005] Furthermore, a membrane wall is arranged inside the shell, and the membrane wall is inclined downward from the back to the front from the inner wall of the rear end face of the shell, the upper smoke chamber is above the membrane wall, and the lower smoke chamber is below the membrane wall, and a smoke port is provided between the front lower end portion of the membrane wall and the shell, and the upper smoke chamber and the lower smoke chamber are connected through the smoke port, and the heat exchange tube on the membrane wall is a serpentine tube, and the lower portion of the serpentine tube is a water inlet, and the water outlet of the heat exchange tube on the membrane wall is connected to the lower end portion of the second serpentine fin heat exchange tube, and the water outlet of the second serpentine fin heat exchange tube group is located at the upper portion.
[0006] Furthermore, a cleaning door is installed on the shell at the lower smoke chamber.
[0007] Furthermore, a smoke guide is fixedly installed in the upper smoke chamber, the front end of the smoke guide is fixedly connected to the shell below the smoke inlet, and the rear end is suspended in the upper smoke chamber, and the smoke guide is inclined from front to back and from bottom to top.
[0008] Furthermore, the smoke guide plate is parallel to the membrane wall.
[0009] The positive and beneficial technical effects of the utility model are: the condenser has a compact structure, the first serpentine fin heat exchange tube group is connected to the steam flowing out of the furnace body to form low-pressure and high-temperature steam, and the second serpentine heat exchange fin group can condense the flue gas to improve the heat exchange efficiency, which is explained in detail in combination with the specific implementation method. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is one of the overall schematic diagrams of the utility model (without the front end plate).
[0011] Figure 2 This is the second overall schematic diagram of the utility model (without the front end plate).
[0012] Figure 3 This is the third overall schematic diagram of the utility model (without the front end plate).
[0013] Figure 4 It is a schematic diagram of the interior of the utility model. DETAILED DESCRIPTION
[0014] In order to more fully explain the implementation of the utility model, implementation examples of the utility model are provided. These implementation examples are only for the purpose of illustrating the utility model and do not limit the scope of the utility model.
[0015] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the marks are: 1: shell; 2: smoke inlet; 3: smoke guide plate; 4: first serpentine fin heat exchange tube group; 5: membrane wall; 6: steam inlet; 7: steam outlet; 8: second serpentine fin heat exchange tube group; 9: water inlet; 10: water outlet; 11: cleaning door; 12: water outlet of the heat exchange tube on the membrane wall; 13: water inlet of the second serpentine fin heat exchange tube group; 14: smoke outlet; 15: upper smoke chamber; 16: lower smoke chamber.
[0016] In the attached drawings, the condensers are not provided with front end panels in order to better express the view. The front end panels can be realized with the help of the furnace body surface on the furnace body, or the front end panels can be directly installed on the condensers in the drawings.
[0017] As shown in the accompanying drawings, a condenser for generating low-pressure and high-temperature steam for a steam boiler comprises a shell 1, on which a smoke inlet 2 and a smoke outlet 14 are provided, the smoke inlet is connected to the smoke outlet of the steam generator furnace body, an upper smoke chamber 15 and a lower smoke chamber 16 are provided in the shell, a ash cleaning door 11 is installed on the shell at the lower smoke chamber, a membrane wall 5 is provided in the shell, the membrane wall is inclined downward from the back to the front from the inner wall of the rear end face of the shell, the upper smoke chamber 15 is above the membrane wall 5, and the lower smoke chamber 16 is below, a smoke outlet is provided between the front lower end portion of the membrane wall and the shell, the upper smoke chamber and the lower smoke chamber are communicated through the smoke outlet, and the arrangement structure is compact.
[0018] A smoke guide plate 3 is fixedly installed in the upper smoke chamber, the front end of the smoke guide plate 3 is fixedly connected to the shell body (front end surface) below the smoke inlet 2, and the rear end is suspended in the upper smoke chamber. The smoke guide plate 3 is inclined from the bottom to the top from front to back, and the smoke guide plate is parallel to the membrane wall.
[0019] The smoke outlet 14 is located on the rear end surface of the shell, the smoke inlet 2 is located on the upper front end surface of the shell, a first serpentine fin heat exchange tube group 4 is installed in the upper smoke chamber, the steam inlet 6 is located on the lower end of the first serpentine fin heat exchange tube group, and the steam outlet 7 is located on the upper end of the serpentine fin heat exchange tube group. The lower front part of the upper smoke chamber 15 is connected to the lower smoke chamber, and a second serpentine fin heat exchange tube group 8 is installed in the lower smoke chamber 16. The second serpentine fin heat exchange tube group is located below the smoke outlet, and the smoke outlet 14 is connected to the lower smoke chamber.
[0020] The heat exchange tube on the membrane wall 5 is a serpentine tube, the lower part of the serpentine tube is the water inlet 9, the water outlet 12 of the heat exchange tube on the membrane wall is connected to the water inlet 13 at the lower end of the second serpentine fin heat exchange tube, and the water outlet 10 of the second serpentine fin heat exchange tube group is located at the upper part.
[0021] This condenser can be installed in, for example, a position where a condenser is located in a vertical steam generator disclosed in Chinese patent application No. 2023200145912. The steam output from the furnace body is connected to the steam inlet 6. The steam exchanges heat with the high-temperature flue gas in the upper smoke chamber to form low-pressure high-temperature steam, which is output from the steam outlet 7; the high-temperature flue gas enters from the smoke inlet, passes through the upper smoke chamber and the lower smoke chamber, and flows out from the smoke outlet. Water flows in from the water inlet 9, and then flows out from the water outlet 10 after heat exchange through the second fin heat exchange tube group. According to the design, the water preheated at the water outlet 10 can be connected to the burner or the furnace body.
[0022] After describing the implementation mode of the utility model in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of the technical solution of the utility model, and the utility model is not limited to the implementation mode of the examples given in the specification.
Claims
1. A condenser for generating low-pressure and high-temperature steam for a steam boiler, comprising a shell, a smoke inlet and a smoke outlet are provided on the shell, the smoke inlet is connected to the smoke outlet of the steam generator furnace body, and is characterized in that: An upper smoke chamber and a lower smoke chamber are arranged in the shell, the smoke outlet is located on the rear end surface of the shell, the smoke inlet is located on the upper front end surface of the shell, a first serpentine fin heat exchange tube group is installed in the upper smoke chamber, the steam inlet is located on the lower end port of the first serpentine fin heat exchange tube group, and the steam outlet is located on the upper end port of the serpentine fin heat exchange tube group, the lower front part of the upper smoke chamber is communicated with the lower smoke chamber, a second serpentine fin heat exchange tube group is installed in the lower smoke chamber, the second serpentine fin heat exchange tube group is located below the smoke outlet, and the smoke outlet is located on the lower smoke chamber.
2. A condenser for generating low-pressure and high-temperature steam for a steam boiler according to claim 1, characterized in that: A membrane wall is arranged in the shell, and the membrane wall is inclined downward from the back to the front from the inner wall of the rear end face of the shell, the upper smoke chamber is above the membrane wall, and the lower smoke chamber is below the membrane wall, and a smoke port is provided between the front lower end portion of the membrane wall and the shell, and the upper smoke chamber and the lower smoke chamber are communicated with each other through the smoke port, and the heat exchange tube on the membrane wall is a serpentine tube, and the lower portion of the serpentine tube is a water inlet, and the water outlet of the heat exchange tube on the membrane wall is connected to the lower end portion of the second serpentine fin heat exchange tube, and the water outlet of the second serpentine fin heat exchange tube group is located at the upper portion.
3. The condenser for generating low-pressure and high-temperature steam for a steam boiler according to claim 1, characterized in that: A dust cleaning door is installed on the shell body at the lower smoke chamber.
4. A condenser for generating low-pressure and high-temperature steam for a steam boiler according to claim 2, characterized in that: A smoke guide plate is fixedly installed in the upper smoke chamber, wherein the front end of the smoke guide plate is fixedly connected to the shell below the smoke inlet, and the rear end is suspended in the upper smoke chamber, and the smoke guide plate is inclined from front to back and from bottom to top.
5. A condenser for generating low-pressure and high-temperature steam for a steam boiler according to claim 4, characterized in that: The smoke guide plate is parallel to the membrane wall.