Low-temperature convection superheater for boiler

Abstract

The utility model provides a low-temperature convection superheater for a boiler, and belongs to the technical field of convection superheaters. Comprising a steam pipeline, a superheater and a connecting frame, a fixing frame is mounted in the steam pipeline, the superheater is fixed in the steam pipeline through the fixing frame, the connecting frame is mounted in the steam pipeline, a plurality of placing frames are mounted in the connecting frame, and filter screens are mounted in the placing frames; by arranging the connecting frame and the filter screen, the filter screen is installed in the placing frame, the filter screen is fixed in the connecting frame through the limiting clamping plate, and then substances such as dust doped in smoke can be filtered through the installation of the filter screen; and dust and other substances attached to the surface of the filter screen can be regularly scraped conveniently, and the situation that too much dust is accumulated on the surface of the filter screen to affect the filtering effect, consequently, dust and other substances are attached to the surface of the superheater, and the heating efficiency of high-temperature steam to flue gas is affected can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of convection superheaters, in particular to a low-temperature convection superheater used for a boiler. Background Art

[0002] Superheater is a component in the boiler that further heats the steam from the saturated temperature to the superheated temperature, also known as steam superheater. Superheaters can be divided into convection type, radiation type and semi-radiation type according to the heat transfer method. Convection superheater refers to a superheater arranged in the convection flue that mainly absorbs the convection heat release of flue gas. Convection superheater consists of many parallel connected serpentine tubes and inlet and outlet headers.

[0003] Existing convection superheaters usually arrange serpentine tubes in the boiler flue. Since the flue gas discharged from the boiler may be mixed with dust and other substances, it is necessary to use a filter to filter the dust and other substances in the flue gas. However, after long-term use, dust and other substances may accumulate and adhere to the surface of the filter, affecting the filtering effect of the filter, thereby affecting the heating efficiency of the high-temperature steam to the flue gas. Therefore, the present application provides a low-temperature convection superheater for a boiler to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a low-temperature convection superheater for a boiler to solve the problem that dust and other materials are accumulated and attached to the filter structure in the existing convection superheater, thus affecting the filtering effect.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A low-temperature convection superheater for a boiler comprises a steam pipe, a superheater and a connecting frame, wherein a fixing frame is installed inside the steam pipe, the superheater is fixed inside the steam pipe through the fixing frame, the connecting frame is installed inside the steam pipe, a plurality of placement frames are installed inside the connecting frame, a filter screen is installed inside the placement frame, a sliding groove is arranged inside the connecting frame, a sliding block is embedded inside the sliding groove, a mounting plate is installed on the top of the sliding block, a mounting rod is installed on the top of the mounting plate, the outer wall of the mounting rod is rotatably sleeved with a mounting sleeve, and a rubber scraper is installed on the outer wall of the mounting sleeve.

[0007] Optionally, a groove is provided inside the connecting frame, a plurality of rotating sleeves are installed inside the groove, a threaded sleeve is installed inside the sliding block, a fixed sleeve is installed inside the groove, a threaded rod is installed inside the rotating sleeve, the threaded rod is threadedly connected to the threaded sleeve, a driving shaft is installed inside the fixed sleeve, and a rotating groove is provided inside the groove.

[0008] Optionally, a transmission gear is installed at one end of the threaded rod, a plurality of worms are installed on the outer wall of the driving shaft, the worms are meshed with the transmission gear, a rotating shaft is installed inside the rotating groove, a driving bevel gear is installed on the outer wall of the driving shaft, a power bevel gear is installed at one end of the rotating shaft, the driving bevel gear is meshed with the power bevel gear, and an adjustment block is installed on the other end of the rotating shaft.

[0009] Optionally, a card slot is provided inside the sliding block, a card block is installed at the bottom of the mounting plate, and the card block is fixedly sleeved inside the card slot.

[0010] Optionally, a mounting box is installed on the top of the mounting plate, a movable plate is installed inside the mounting box, a push rod is installed on the top of the movable plate, a push spring is installed inside the mounting box, and the push spring contacts the bottom of the movable plate.

[0011] Optionally, a limiting clamping plate is installed inside the placement frame, and the filter screen is fixed inside the placement frame through the limiting clamping plate.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] In the above scheme, a rubber scraper is provided and installed on the outside of the mounting rod through a mounting sleeve. Then, the adjusting block is rotated to drive the meshing between the power bevel gear and the driving bevel gear, so that the driving shaft and the worm are rotated, and then the meshing between the worm and the transmission gear is facilitated, thereby driving the threaded rod to rotate. The threaded connection between the threaded rod and the threaded sleeve drives the sliding block to slide inside the sliding groove, thereby driving the rubber scraper to move, so as to scrape off dust and other substances attached to the surface of the filter screen, which can avoid excessive dust accumulation on the surface of the filter screen affecting the filtering effect, and cause dust and other substances to adhere to the surface of the superheater, affecting the heating efficiency of the high-temperature steam to the flue gas.

[0014] By setting a connecting frame and a filter, the filter is installed inside the placement frame, and the filter is fixed inside the connecting frame by a limiting card plate. Then, through the installation of the filter, dust and other substances mixed in the flue gas can be filtered. At the same time, through the installation of a rubber scraper, it is convenient to regularly scrape off the dust and other substances attached to the surface of the filter, which can avoid excessive dust accumulation on the surface of the filter that affects the filtering effect, and cause dust and other substances to adhere to the surface of the superheater, affecting the heating efficiency of the flue gas by high-temperature steam.

[0015] By setting a pushing rod and a pushing spring, the installation box is installed on the top of the installation plate, and the pushing spring is installed inside the installation box and contacts the moving plate. Then, under the action of the pushing spring, the pushing rod contacts the rubber scraper, thereby pushing the rubber scraper to rotate around the installation rod, so that the rubber scraper contacts the surface of the filter, thereby facilitating the cleaning of dust attached to the surface of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a low-temperature convection superheater used in a boiler;

[0018] Figure 2 It is a schematic diagram of the main structure of a low-temperature convection superheater used in a boiler;

[0019] Figure 3 for Figure 2 Schematic diagram of the AA section structure;

[0020] Figure 4 It is a left-side structural schematic diagram of a low-temperature convection superheater used in a boiler;

[0021] Figure 5 for Figure 4 Schematic diagram of the BB cross-section structure;

[0022] Figure 6 It is a schematic diagram of a top view structure of a low-temperature convection superheater for a boiler;

[0023] Figure 7 for Figure 3 The schematic diagram of the partially enlarged structure of part C in the middle;

[0024] Figure 8 for Figure 5 Schematic diagram of the partially enlarged structure of part D in the middle.

[0025] [Reference Signs]

[0026] 1. Steam pipe; 2. Superheater; 3. Connecting frame; 4. Placing frame; 5. Filter; 6. Limiting card plate; 7. Sliding groove; 8. Sliding block; 9. Card slot; 10. Card block; 11. Mounting plate; 12. Mounting rod; 13. Mounting sleeve; 14. Rubber scraper; 15. Mounting box; 16. Moving plate; 17. Push rod; 18. Push spring; 19. Groove; 20. Rotating sleeve; 21. Threaded rod; 22. Threaded sleeve; 23. Transmission gear; 24. Fixed sleeve; 25. Driving shaft; 26. Worm; 27. Driving bevel gear; 28. Rotating groove; 29. ​​Rotating shaft; 30. Power bevel gear; 31. Adjustment block; 32. Fixed frame.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0028] The following is a detailed description of a low-temperature convection superheater for a boiler provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0029] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0030] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0031] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0032] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0033] like Figures 1 to 8 As shown, an embodiment of the utility model provides a low-temperature convection superheater for a boiler, comprising a steam pipe 1, a superheater 2 and a connecting frame 3, wherein a fixing frame 32 is installed inside the steam pipe 1, the superheater 2 is fixed inside the steam pipe 1 through the fixing frame 32, the connecting frame 3 is installed inside the steam pipe 1, a plurality of placement frames 4 are installed inside the connecting frame 3, a filter screen 5 is installed inside the placement frame 4, a sliding groove 7 is arranged inside the connecting frame 3, a sliding block 8 is embedded inside the sliding groove 7, a mounting plate 11 is installed on the top of the sliding block 8, a mounting rod 12 is installed on the top of the mounting plate 11, the outer wall of the mounting rod 12 is rotatably sleeved with a mounting sleeve 13, and a rubber scraper 14 is installed on the outer wall of the mounting sleeve 13.

[0034] like Figure 3 and Figure 5 As shown, a groove 19 is provided inside the connecting frame 3, a plurality of rotating sleeves 20 are installed inside the groove 19, a threaded sleeve 22 is installed inside the sliding block 8, a fixed sleeve 24 is installed inside the groove 19, a threaded rod 21 is installed inside the rotating sleeve 20, the threaded rod 21 is threadedly connected with the threaded sleeve 22, a driving shaft 25 is installed inside the fixed sleeve 24, and a rotating groove 28 is provided inside the groove 19.

[0035] like Figure 2 and Figure 3As shown, a transmission gear 23 is installed at one end of the threaded rod 21, and a plurality of worms 26 are installed on the outer wall of the driving shaft 25, which mesh with the transmission gear 23. A rotating shaft 29 is installed inside the rotating groove 28, and a driving bevel gear 27 is installed on the outer wall of the driving shaft 25. A power bevel gear 30 is installed at one end of the rotating shaft 29, and the driving bevel gear 27 meshes with the power bevel gear 30. An adjusting block 31 is installed at the other end of the rotating shaft 29.

[0036] like Figure 3 and Figure 5 As shown, a card slot 9 is provided inside the sliding block 8, and a card block 10 is installed at the bottom of the mounting plate 11. The card block 10 is fixedly sleeved inside the card slot 9. By setting the card block 10 and the card slot 9, the card block 10 is fixedly sleeved inside the card slot 9, so that the rubber scraper 14 can be easily installed inside the sliding block 8. This is the prior art.

[0037] like Figure 5 , Figure 7 and Figure 8 As shown, a mounting box 15 is mounted on the top of the mounting plate 11, a movable plate 16 is mounted inside the mounting box 15, a pushing rod 17 is mounted on the top of the movable plate 16, a pushing spring 18 is mounted inside the mounting box 15, and the pushing spring 18 is in contact with the bottom of the movable plate 16. By setting the pushing rod 17 and the pushing spring 18, the mounting box 15 is mounted on the top of the mounting plate 11, and the pushing spring 18 is installed inside the mounting box 15 and in contact with the movable plate 16. Then, under the action of the pushing spring 18, the pushing rod 17 is in contact with the rubber scraper 14, thereby pushing the rubber scraper 14 to rotate around the mounting rod 12, so that the rubber scraper 14 is in contact with the surface of the filter 5, thereby facilitating the cleaning of dust attached to the surface of the filter 5.

[0038] like Figure 1 and Figure 4 As shown, a limiting clamp plate 6 is installed inside the placing frame 4 , and the filter screen 5 is fixed inside the placing frame 4 through the limiting clamp plate 6 .

[0039] The technical solution provided by the utility model is to set a connecting frame and a filter, install the filter inside the placement frame, and fix the filter inside the connecting frame by a limiting clamp plate, and then through the installation of the filter, dust and other substances mixed in the flue gas can be filtered out, and at the same time, through the installation of a rubber scraper, it is convenient to regularly scrape off the dust and other substances attached to the surface of the filter, which can avoid excessive dust accumulation on the surface of the filter that affects the filtering effect, and cause dust and other substances to adhere to the surface of the superheater, affecting the heating efficiency of the flue gas by the high-temperature steam.

[0040] By setting a rubber scraper, the rubber scraper is installed on the outside of the mounting rod through the mounting sleeve, and then the adjusting block is rotated to drive the meshing between the power bevel gear and the driving bevel gear, so that the driving shaft and the worm are rotated, and then the meshing between the worm and the transmission gear is facilitated, thereby driving the threaded rod to rotate, and the threaded connection between the threaded rod and the threaded sleeve drives the sliding block to slide inside the sliding groove, thereby driving the rubber scraper to move, so as to scrape off dust and other substances attached to the surface of the filter screen, which can avoid excessive dust accumulation on the surface of the filter screen affecting the filtering effect, and cause dust and other substances to adhere to the surface of the superheater, affecting the heating efficiency of the high-temperature steam to the flue gas.

[0041] By setting a pushing rod and a pushing spring, the installation box is installed on the top of the installation plate, and the pushing spring is installed inside the installation box and contacts the moving plate. Then, under the action of the pushing spring, the pushing rod contacts the rubber scraper, thereby pushing the rubber scraper to rotate around the installation rod, so that the rubber scraper contacts the surface of the filter, thereby facilitating the cleaning of dust attached to the surface of the filter.

[0042] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A low-temperature convection superheater for a boiler, comprising a steam pipe, a superheater and a connecting frame, characterized in that: A fixing frame is installed inside the steam pipe, and the superheater is fixed inside the steam pipe through the fixing frame. The connecting frame is installed inside the steam pipe. A plurality of placement frames are installed inside the connecting frame. A filter screen is installed inside the placement frame. A sliding groove is provided inside the connecting frame. A sliding block is embedded in the sliding groove. A mounting plate is installed on the top of the sliding block. A mounting rod is installed on the top of the mounting plate. The outer wall of the mounting rod is rotatably connected to a mounting sleeve, and a rubber scraper is installed on the outer wall of the mounting sleeve.

2. The low temperature convection superheater for boiler according to claim 1, characterized in that: A groove is arranged inside the connection frame, a plurality of rotating sleeves are installed inside the groove, a threaded sleeve is installed inside the sliding block, and a fixed sleeve is installed inside the groove.

3. The low temperature convection superheater for boiler according to claim 2, characterized in that: A threaded rod is installed inside the rotating sleeve, and the threaded rod is threadedly connected with the threaded sleeve. A driving shaft is installed inside the fixed sleeve, and a rotating groove is arranged inside the groove.

4. The low temperature convection superheater for boiler according to claim 3, characterized in that: A transmission gear is installed at one end of the threaded rod, a plurality of worms are installed on the outer wall of the driving shaft, the worms are meshed with the transmission gear, and a rotating shaft is installed inside the rotating groove.

5. The low temperature convection superheater for boiler according to claim 4, characterized in that: A driving bevel gear is installed on the outer wall of the driving shaft, a power bevel gear is installed on one end of the rotating shaft, and the driving bevel gear is meshed with the power bevel gear.

6. The low temperature convection superheater for boiler according to claim 5, characterized in that: An adjusting block is installed at the other end of the rotating shaft.

7. The low temperature convection superheater for boiler according to claim 1, characterized in that: A card slot is arranged inside the sliding block, a card block is installed at the bottom of the mounting plate, and the card block is fixedly sleeved inside the card slot.

8. The low temperature convection superheater for boiler according to claim 1, characterized in that: A mounting box is mounted on the top of the mounting plate, a moving plate is mounted inside the mounting box, and a pushing rod is mounted on the top of the moving plate.

9. The low temperature convection superheater for boiler according to claim 8, characterized in that: A push spring is installed inside the installation box, and the push spring is in contact with the bottom of the moving plate.

10. The low temperature convection superheater for boiler according to claim 1, characterized in that: A limiting clamping plate is installed inside the placing frame, and the filter screen is fixed inside the placing frame through the limiting clamping plate.

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