Low-temperature plate type economizer
By setting up a connecting pipe and a sealing plate structure in the low-temperature plate economizer, the problem of flue gas impurity adsorption is solved, efficient flue gas filtration and cleaning is achieved, heat exchange efficiency is maintained and the cleaning process is simplified.
Patent Information
- Application Number
- CN202422598724.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-10-28
AI Technical Summary
When the existing economizer is in use, dust and particulate matter in the flue gas are easily adsorbed on the surface of the heat exchanger, affecting the heat exchange effect, and cleaning the impurities takes a lot of time.
A low-temperature plate economizer was designed. By setting a connecting pipe and a sealing plate structure at the inlet of the smoke stack, the flue gas first enters the connecting pipe for filtration, and impurities are accumulated at the sealing plate position. When cleaning, the sealing plate is opened by sliding the exhaust pipe, and the impurities enter the exhaust structure and are directly discharged without disassembling the economizer.
It improves the cleanliness of flue gas, maintains the good heat exchange efficiency of plate heat exchange tubes, improves the efficiency of impurity cleaning, and reduces cleaning time and labor costs.
Smart Images
Figure CN223470178U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of coal economizer, especially relates to a low-temperature plate type coal economizer. BACKGROUND
[0002] The coal economizer is a device installed at the lower part of the tail flue of the boiler for recovering the waste heat of the discharged flue gas, and is a heating surface for heating the boiler feed water into saturated water under the pressure of the steam drum. Since it absorbs the heat of the high-temperature flue gas, reduces the flue gas discharge temperature, saves energy and improves efficiency, it is called a coal economizer.
[0003] The existing coal economizer has the problem that when in use, since there are many dust and particulate matters in the flue gas, the impurities are easily adsorbed on the surface of the heat exchanger when the flue gas is conveyed, which not only affects the heat exchange effect of the heat exchanger, but also requires a large amount of time to disassemble the coal economizer when the impurities need to be cleaned. UTILITY MODEL CONTENTS
[0004] To solve the above technical problems, the utility model provides a low-temperature plate type coal economizer, which aims to solve or improve at least one of the above technical problems.
[0005] To achieve the above purpose, the utility model provides a low-temperature plate type coal economizer, which comprises:
[0006] An outer shell is provided with an inlet flue and an outlet flue at both ends, and a plate type heat exchange pipe is fixedly installed in the outer shell;
[0007] A communication pipe is arranged at the inlet of the inlet flue, one end of the communication pipe is located outside the inlet flue and is fixedly connected with a first mounting flange, the first mounting flange and the inlet flue are fixedly connected through a plurality of supporting rods, the end of the communication pipe away from the first mounting flange is deeply inserted into the inner cavity of the inlet flue and forms a filtering section, and a closable sealing plate is arranged at the port of the communication pipe close to the filtering section;
[0008] A foreign matter discharging pipe is sleeved outside the communication pipe, and the foreign matter discharging pipe is slidably connected with the communication pipe, the bottom end of the foreign matter discharging pipe corresponds to the outer edge of the sealing plate in up and down directions, and a foreign matter discharging mechanism is arranged in the sidewall of the foreign matter discharging pipe.
[0009] Optionally, the foreign matter discharging mechanism comprises a foreign matter discharging cavity, an opening and a pipeline assembly, the foreign matter discharging cavity is arranged in the sidewall of the foreign matter discharging pipe, the bottom end of the foreign matter discharging cavity is open, the opening is circumferentially arranged in the inner wall of the bottom end of the foreign matter discharging pipe, the opening is communicated with the foreign matter discharging cavity, and the pipeline assembly is arranged at the top end of the foreign matter discharging pipe and is communicated with the foreign matter discharging cavity.
[0010] Optionally, the pipeline assembly comprises a main pipeline, the main pipeline is fixedly connected with and communicated with a plurality of sub-pipelines, and the plurality of sub-pipelines are fixedly connected in the circumferential direction of the top end of the impurity removal pipe and communicated with the impurity removal cavity.
[0011] Optionally, the end of the communication pipe away from the first mounting flange is axially fixedly connected with a plurality of guide rods, the guide rods penetrate through and are slidingly connected with the sealing plate, one end of the guide rods away from the communication pipe is fixedly connected with a tray, the guide rods are sleeved with springs, and the springs are fixedly connected between the sealing plate and the tray.
[0012] Optionally, a plurality of air cylinders are fixedly connected between the top side wall of the communication pipe and the top side wall of the impurity removal pipe, and the air cylinders are located outside the smoke inlet cylinder.
[0013] Optionally, a cleaning section is formed in the inner wall of the impurity removal pipe, and the cleaning section is in contact with the filtering section.
[0014] Optionally, the outlet of the smoke outlet cylinder is fixedly connected with and communicated with a smoke removal pipe, and the smoke removal pipe is fixedly connected with a second mounting flange at an end away from the smoke outlet cylinder.
[0015] Optionally, a pointed conical flow guide block is fixedly connected to the top surface of the sealing plate, the flow guide block is coaxially arranged with the communication pipe, and the maximum diameter of the flow guide block is smaller than the inner diameter of the communication pipe.
[0016] Compared with the prior art, the utility model has the advantages and technical effects that:
[0017] By arranging the communication pipe at the inlet of the smoke inlet cylinder, the flue gas first enters the communication pipe, the flue gas is filtered by the filtering section at the bottom of the communication pipe, and the impurities in the flue gas are filtered and accumulated in the communication pipe close to the sealing plate due to the flow of the flue gas and the interception of the sealing plate, so that the cleanliness of the flue gas is improved, and the plate heat exchange pipe maintains good heat exchange efficiency.
[0018] When the impurities need to be cleaned, the impurity removal pipe is slid downward to be in contact with the sealing plate and push the sealing plate upward, so that the impurities in front of the sealing plate enter the impurity removal structure, and then the impurities are directly discharged out of the impurity removal pipe by the impurity removal structure, without the need of disassembling the economizer, and the impurity removal efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings constituting a part of this application are used to provide further understanding of the application, the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute improper limitations on the application. In the drawings:
[0020] Figure 1 It is a whole structure schematic view of the utility model;
[0021] Figure 2The utility model discloses an explosion chart;
[0022] Figure 3 The utility model discloses a communication pipe and the structure schematic diagram of miscellaneous pipe,
[0023] Figure 4 The utility model discloses the end -to -end structure of miscellaneous pipe near the closing plate,
[0024] Figure 5 The utility model discloses the structure schematic diagram of closing plate and flow guide block.
[0025] In the drawing: 1, shell, 2, smoke inlet pipe, 3, smoke outlet pipe, 4, plate heat exchange pipe, 5, communication pipe, 6, first mounting flange, 7, support rod, 8, filter section, 9, closing plate, 10, miscellaneous pipe, 11, miscellaneous cavity, 12, opening, 13, main pipeline, 14, sub-pipeline, 15, guide rod, 16, tray, 17, spring, 18, cylinder, 19, cleaning section, 20, smoke exhaust pipe, 21, second mounting flange, 22, flow guide block. DETAILED DESCRIPTION
[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0027] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the utility model will be further described in detail below in conjunction with the drawings and specific embodiments.
[0028] Referring to Figures 1-5 The embodiment provides a low-temperature plate economizer, which comprises:
[0029] The shell 1 is fixedly connected with the smoke inlet pipe 2 and the smoke outlet pipe 3 at both ends and is communicated with the smoke inlet pipe 2 and the smoke outlet pipe 3; the plate heat exchange pipe 4 is fixedly installed in the shell 1;
[0030] The communication pipe 5 is arranged at the inlet of the smoke inlet pipe 2; one end of the communication pipe 5 is located outside the smoke inlet pipe 2 and is fixedly connected with the first mounting flange 6; the first mounting flange 6 and the smoke inlet pipe 2 are fixedly connected through a plurality of support rods 7; one end of the communication pipe 5, away from the first mounting flange 6, is deeply arranged in the inner cavity of the smoke inlet pipe 2 and forms the filter section 8; and the end of the communication pipe 5, close to the filter section 8, is provided with the closable closing plate 9;
[0031] The impurity removal pipe 10 is sleeved outside the communication pipe 5 and is in sliding connection with the communication pipe 5. The bottom end of the impurity removal pipe 10 corresponds to the outer edge of the sealing plate 9. An impurity removal mechanism is arranged in the side wall of the impurity removal pipe 10.
[0032] By arranging the communication pipe 5 at the inlet of the smoke inlet pipe 2, the flue gas first enters the communication pipe 5 and is filtered by the filter section 8 at the bottom of the communication pipe 5. The impurities in the flue gas are filtered and accumulated in the communication pipe 5 near the sealing plate 9 due to the flow of the flue gas and the interception of the sealing plate 9. Thus, the cleanliness of the flue gas is improved, and the plate heat exchange pipe 4 maintains good heat exchange efficiency.
[0033] When it is necessary to clean the impurities, the impurity removal pipe 10 is moved downward to contact the sealing plate 9 and push the sealing plate 9 upward. Thus, the impurities at the front end of the sealing plate 9 enter the impurity removal mechanism, and the impurities are directly removed from the impurity removal pipe 10 without disassembling the economizer, thereby improving the impurity removal efficiency.
[0034] Further optimization, the impurity removal mechanism includes an impurity removal cavity 11, an opening 12 and a pipeline assembly. The impurity removal cavity 11 is arranged in the side wall of the impurity removal pipe 10 and the bottom end of the impurity removal cavity 11 is open. The opening 12 is circumferentially arranged in the inner wall of the bottom end of the impurity removal pipe 10 and is in communication with the impurity removal cavity 11. The pipeline assembly is arranged at the top end of the impurity removal pipe 10 and is in communication with the impurity removal cavity 11. The pipeline assembly includes a main pipeline 13. The main pipeline 13 is fixedly connected with a plurality of sub-pipelines 14. The plurality of sub-pipelines 14 are circumferentially fixedly connected to the top end of the impurity removal pipe 10 and are in communication with the impurity removal cavity 11.
[0035] By arranging the opening 12, the impurities on the sealing plate 9 can be in communication with the impurity removal cavity 11 after the sealing plate 9 is pushed upward. Thus, the impurities can be sucked out of the impurity removal cavity 11 through the external pump, the main pipeline 13 and the plurality of sub-pipelines 14.
[0036] Further optimization, the end of the communication pipe 5 away from the first mounting flange 6 is axially fixedly connected with a plurality of guide rods 15. The guide rods 15 penetrate through the sealing plate 9 and are in sliding connection with the sealing plate 9. The end of the guide rod 15 away from the communication pipe 5 is fixedly connected with a tray 16. The guide rod 15 is sleeved with a spring 17. The spring 17 is fixedly connected between the sealing plate 9 and the tray 16.
[0037] By arranging the guide rod 15 and the spring 17, the sealing plate 9 can be automatically reset to close the bottom opening of the communication pipe 5 during filtering.
[0038] Further optimization, a plurality of air cylinders 18 are fixedly connected between the top side wall of the communication pipe 5 and the top side wall of the impurity removal pipe 10. The air cylinders 18 are located outside the smoke inlet pipe 2.
[0039] The movement of the impurity removal pipe 10 is driven by the air cylinders 18.
[0040] Further optimization scheme, the inner wall of the impurity discharge pipe 10 is formed with a cleaning section 19, and the cleaning section 19 is in contact with the filtering section 8.
[0041] The cleaning section 19 is composed of a plurality of bristles, and the filtering section 8 is composed of a plurality of filtering holes. During the downward movement of the impurity discharge pipe 10, the filtering section 8 can be cleaned by the cleaning section 19, so that the adhered impurities on the filtering section 8 fall off.
[0042] Further optimization scheme, the outlet of the smoke outlet pipe 3 is fixedly connected and communicated with a smoke discharge pipe 20, and the second mounting flange 21 is fixedly connected to the end of the smoke discharge pipe 20 away from the smoke outlet pipe 3.
[0043] The flue gas is discharged through the smoke discharge pipe 20.
[0044] Further optimization scheme, the top surface of the sealing plate 9 is fixedly connected with a sharp conical flow guide block 22, the flow guide block 22 is coaxially arranged with the communication pipe 5, and the maximum diameter size of the flow guide block 22 is smaller than the inner diameter size of the communication pipe 5.
[0045] The flow guide block 22 is arranged to facilitate the flow of impurities to the opening 12.
[0046] Further, the smoke inlet pipe 2 and the smoke outlet pipe 3 are both conical structures, which facilitates the flow of flue gas.
[0047] Further, the impurity discharge pipe 10 and the smoke inlet pipe 2 inlet are both provided with a sealing structure, preferably a sealing ring (not shown in the figure), which is a prior art and will not be described here.
[0048] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.
[0049] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application.
Claims
1. A low-temperature plate economizer, characterized by, Include: The shell (1) is fixed and communicated with the smoke inlet pipe (2) and the smoke outlet pipe (3) at both ends respectively, and the plate heat exchanger pipe (4) is fixedly installed in the shell (1); The communication pipe (5) is provided at the inlet of the smoke inlet pipe (2), one end of the communication pipe (5) is located outside the smoke inlet pipe (2) and is fixedly connected with the first mounting flange (6), the first mounting flange (6) and the smoke inlet pipe (2) are fixedly connected through a plurality of supporting rods (7), one end of the communication pipe (5) away from the first mounting flange (6) is deeply inserted into the inner cavity of the smoke inlet pipe (2) and is formed with a filter section (8), and the port of the communication pipe (5) close to the filter section (8) is provided with a closable sealing plate (9); The impurity discharge pipe (10) is sleeved outside the communication pipe (5), and the impurity discharge pipe (10) is slidably connected with the communication pipe (5), the bottom end of the impurity discharge pipe (10) corresponds to the upper and lower edges of the sealing plate (9), and the impurity discharge mechanism is arranged in the inner wall of the impurity discharge pipe (10).
2. A cryogenic plate economizer as defined in claim 1, wherein: The impurity discharge mechanism includes an impurity discharge cavity (11), an opening (12) and a pipeline assembly, the impurity discharge cavity (11) is arranged in the side wall of the impurity discharge pipe (10), and the bottom end of the impurity discharge cavity (11) is open, the opening (12) is circumferentially arranged in the inner wall of the bottom end of the impurity discharge pipe (10), and the opening (12) is communicated with the impurity discharge cavity (11), and the pipeline assembly is arranged at the top end of the impurity discharge pipe (10) and communicated with the impurity discharge cavity (11).
3. A cryogenic plate economizer as defined in claim 2, wherein: The pipeline assembly includes a main pipeline (13), a plurality of sub-pipelines (14) are fixedly connected and communicated with the main pipeline (13), and a plurality of the sub-pipelines (14) are circumferentially fixedly connected at the top end of the impurity discharge pipe (10) and communicated with the impurity discharge cavity (11).
4. A cryogenic plate economizer as set forth in claim 1, characterized by: The end of the communication pipe (5) away from the first mounting flange (6) is axially fixedly connected with a plurality of guide rods (15), the guide rods (15) penetrate through the sealing plate (9) and are slidably connected with the sealing plate (9), one end of the guide rod (15) away from the communication pipe (5) is fixedly connected with a tray (16), the guide rod (15) is sleeved with a spring (17), and the spring (17) is fixedly connected between the sealing plate (9) and the tray (16).
5. A cryogenic plate economizer as set forth in claim 1, characterized by: A plurality of air cylinders (18) are fixedly connected between the top side wall of the communication pipe (5) and the top side wall of the impurity discharge pipe (10), and the air cylinders (18) are located outside the smoke inlet pipe (2).
6. A cryogenic plate economizer as set forth in claim 1, characterized by: The inner wall of the impurity discharge pipe (10) is formed with a cleaning section (19), and the cleaning section (19) is in contact with the filter section (8).
7. A cryogenic plate economizer as set forth in claim 1, characterized by: The outlet of the smoke outlet pipe (3) is fixedly connected and communicated with a smoke discharge pipe (20), and one end of the smoke discharge pipe (20) away from the smoke outlet pipe (3) is fixedly connected with a second mounting flange (21).
8. A cryogenic plate economizer as set forth in claim 4, characterized by: The top surface of the sealing plate (9) is fixedly connected with a pointed conical flow guide block (22), the flow guide block (22) is coaxially arranged with the communication pipe (5), and the maximum diameter of the flow guide block (22) is smaller than the inner diameter of the communication pipe (5).