Low-temperature economizer convenient and rapid to maintain
By designing a detachable pipe-draft assembly and a control valve closure structure, the problem of repair difficulties in individual pipe-drafts in low-temperature economizers is solved, and the effect of rapid repair and reduced maintenance costs is achieved.
Patent Information
- Application Number
- CN202421509385.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-28
AI Technical Summary
After the operating life of existing low-temperature economizers increase, they are prone to leakage or ash blocking problems caused by wear or corrosion, resulting in thermal energy loss and maintenance difficulties. They cannot realize inspection and modification of a single module and need to be replaced as a whole, which increases the cost of use.
A low temperature economizer consisting of a bracket and a removable pipe row assembly is designed. The pipe row assembly consists of a mounting plate, a U-shaped pipe fitting and a U-shaped elbow, allowing each pipe row to be individually removed and replaced. By controlling valve closure and U-shaped elbow removal, it is convenient for the repair and replacement of the pipe row.
It realizes rapid maintenance of low-temperature economizers, reduces maintenance costs and time, avoids the impact of the overall equipment operation due to individual pipe arrangement problems, and improves the maintenance and use efficiency of the equipment.
Smart Images
Figure CN222760866U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of economizers, in particular to a low-temperature economizer which is convenient and quick to maintain. Background Art
[0002] In order to save energy, boilers required for coal-fired power generation, industrial and domestic heating all use economizer components to reduce the flue gas temperature, absorb heat energy to heat the feed water and convert it into steam. The existing economizers are generally composed of right serpentine pipes and headers set at both ends of the serpentine bends. As the low-temperature economizers in thermal power plants increase in operating years, they are bound to have leakage or ash blockage caused by wear or corrosion, resulting in a large amount of heat energy loss and reduced work efficiency. When problems occur in individual pipe banks, it is impossible to repair and modify a single module, and the equipment can only be replaced as a whole, which greatly increases the cost of using the economizer. Utility Model Content
[0003] The purpose of the utility model is to solve the above problems in the existing technology and to propose a low-temperature economizer that is convenient and quick to repair. The technical problem to be solved by the utility model is: how to solve the problem of difficulty in repairing individual problematic tube rows in the economizer.
[0004] The purpose of the utility model can be achieved through the following technical solutions:
[0005] A low-temperature economizer which is convenient and quick to maintain, comprises a bracket and a plurality of tube row assemblies arranged on the bracket along vertical intervals, the bracket comprises a front support plate and a rear support plate, and is characterized in that the tube row assembly comprises a mounting plate and a tube row, the tube row comprises at least two U-shaped pipe fittings passing through the mounting plate, all the U-shaped pipe fittings are arranged at intervals along the length direction of the mounting plate, the mounting plate is detachably fixed to the outer side wall of the front support plate, the U-shaped pipe fitting passes through the front support plate and the rear support plate in the horizontal direction, two adjacent U-shaped pipe fittings are connected in series via U-shaped elbows, and the tube row has an inlet and an outlet at one end facing the rear support plate; all the inlets and all the outlets are respectively located on the left and right sides of the rear support plate, and all the inlets and all the outlets are arranged at vertical intervals.
[0006] During the use of this low-temperature economizer, each inlet and each outlet are connected to a separate pipeline and control valve. When a leak occurs in an individual pipe bank, the inlet and outlet of the pipe bank are first disconnected from the corresponding pipeline, and the control valves on the corresponding pipelines of the inlet and outlet of the pipe bank are closed. Then the U-shaped elbow in the pipe bank is removed, and the mounting plate and the front support plate are released from the fixed connection. Then the mounting plate is moved horizontally so that the U-shaped pipe fittings on the pipe bank are pulled out horizontally from the rear support plate and the front support plate, so as to facilitate the replacement or maintenance of the pipe bank. Finally, the repaired pipe bank or the new pipe bank is reinstalled on the bracket. Since each pipe bank can be disassembled separately, the convenience of low-temperature economizer maintenance is greatly facilitated. During the maintenance period, since the control valves on the corresponding pipelines of the inlet and outlet of the repaired pipe bank are already in a closed state, it does not affect the normal use of the remaining pipe banks.
[0007] In the above-mentioned low-temperature economizer that is convenient and quick to maintain, the U-shaped pipe fitting has two ports, and the outer circumferences of the two ports are sleeved with connecting sleeves, the connecting sleeves are fixedly connected to the U-shaped pipe fitting, and the end surface of the connecting sleeve is provided with threaded holes, and both ends of the U-shaped elbow have flanges 1, and the flanges 1 and the connecting sleeves are connected by fasteners. Through the arrangement of this structure, both ends of the U-shaped elbow are fixedly connected to the connecting sleeves on the two ports through the flanges 1, and the U-shaped elbow is conveniently and firmly connected to the ports of the U-shaped pipe fitting, and the connection structure has good sealing performance.
[0008] In the above-mentioned low-temperature economizer that is convenient and quick to maintain, a rear mounting hole is opened on the rear support plate corresponding to each port position, each connecting sleeve is located in the corresponding rear mounting hole, and the end of the connecting sleeve is located outside the rear mounting hole. Through the arrangement of this structure, the structure in which the connecting sleeve is located in the rear mounting hole enables the rear support plate to support the end of the U-shaped pipe fitting, thereby ensuring the stability of the installation of the U-shaped pipe fitting, and the structure in which the end of the connecting sleeve is located outside the rear mounting hole facilitates the connection of the end of the connecting sleeve with the flange.
[0009] In the above-mentioned low-temperature economizer that is convenient and quick to maintain, a front mounting hole is provided on the front support plate at a position corresponding to each U-shaped pipe fitting, and each U-shaped pipe fitting is arranged through two front mounting holes, and the inner diameter of the front mounting hole is larger than the outer diameter of the connecting sleeve. Through the arrangement of this structure, the arrangement of the front mounting holes facilitates the U-shaped pipe fitting to be inserted into the front support plate, and the inner diameter of the front mounting hole is larger than the outer diameter of the connecting sleeve so that the U-shaped pipe fitting can be pulled out from the front support plate.
[0010] In the above-mentioned low-temperature economizer that is convenient and quick to maintain, the mounting plate is provided with through holes corresponding to the positions of each U-shaped pipe fitting, each U-shaped pipe fitting is arranged through two through holes, and each U-shaped pipe fitting is sleeved with two flanges 2, and the flanges 2 are connected to the mounting plate by fasteners. Through the arrangement of this structure, the arrangement of the through holes facilitates the U-shaped pipe fitting to be passed through the mounting plate, and the flanges 2 are fixed to the mounting plate by fasteners to realize the fixing of the U-shaped pipe fitting on the mounting plate. This structure makes the U-shaped pipe fitting detachable on the mounting plate. When the pipe bank leaks or is damaged, the U-shaped pipe fitting with the problem can be replaced without replacing the entire pipe bank, which reduces the maintenance cost and further improves the convenience of maintenance.
[0011] In the above-mentioned low-temperature economizer with convenient and quick maintenance, the mounting plate and the front support plate are connected by bolts. Through the arrangement of this structure, the mounting plate and the front support plate are connected by bolts, thereby realizing a detachable connection.
[0012] Compared with the prior art, the low-temperature economizer of the utility model, which is convenient and quick to maintain, has the following advantages: when leakage occurs in individual tube banks, the inlet and outlet of the tube bank are first disconnected from the corresponding pipelines, and the control valves on the corresponding pipelines of the inlet and outlet of the tube bank are closed, and then the U-shaped elbow in the tube bank is removed, and then the mounting plate and the front support plate are released from the fixed connection, and then the mounting plate is moved in the horizontal direction, so that the U-shaped pipe fittings on the tube bank are pulled out from the rear support plate and the front support plate in the horizontal direction, so as to facilitate the replacement or maintenance of the tube bank, and finally the repaired tube bank or the new tube bank is reinstalled on the bracket. Since each tube bank can be disassembled separately, the convenience of low-temperature economizer maintenance is greatly facilitated. During maintenance, since the control valves on the corresponding pipelines of the inlet and outlet of the maintenance tube bank are already in a closed state, the normal use of the remaining tube banks is not affected. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0014] Figure 2 It is a schematic diagram of the explosion structure of the utility model.
[0015] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A in the middle.
[0016] Figure 4 It is a three-dimensional structural schematic diagram of the tube row assembly of the utility model.
[0017] Figure 5 It is a three-dimensional structural schematic diagram of the bracket of the utility model.
[0018] Figure 6It is a three-dimensional structural schematic diagram of the mounting plate of the utility model.
[0019] In the figure, 1. bracket; 2. pipe row assembly; 20. mounting plate; 200. through hole; 21. pipe row; 210. U-shaped pipe fitting; 211. U-shaped elbow; 213. connecting sleeve; 214. flange one; 215. flange two; 3. front support plate; 30. front mounting hole; 4. rear support plate; 40. rear mounting hole; 5. inlet; 6. outlet; 7. port; 8. threaded hole; 9. bolt. DETAILED DESCRIPTION
[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0021] like Figure 1 to Figure 5 As shown, the low-temperature economizer for convenient and quick maintenance comprises a bracket 1 and a plurality of tube row assemblies 2 arranged vertically at intervals on the bracket 1, the bracket 1 comprises a front support plate 3 and a rear support plate 4, and is characterized in that the tube row assembly 2 comprises a mounting plate 20 and a tube row 21, the tube row 21 comprises at least two U-shaped pipe fittings 210 penetrating the mounting plate 20, all U-shaped pipe fittings 210 are arranged at intervals along the length direction of the mounting plate 20, and in this embodiment, each tube row 21 comprises three U-shaped pipe fittings 210 and two U-shaped elbows 211. The mounting plate 20 is detachably fixed to the outer side wall of the front support plate 3, and in this embodiment, the mounting plate 20 and the front support plate 3 are connected by bolts 9. The U-shaped pipe fitting 210 passes through the front support plate 3 and the rear support plate 4 in the horizontal direction, and two adjacent U-shaped pipe fittings 210 are connected in series through a U-shaped elbow 211. The end of the tube row 21 facing the rear support plate 4 has an inlet 5 and an outlet 6; all the inlets 5 and all the outlets 6 are respectively located on the left and right sides of the rear support plate 4, and all the inlets 5 and all the outlets 6 are arranged at intervals in the vertical direction. During the use of the low-temperature economizer, each inlet 5 and each outlet 6 are connected to the pipeline and control valve separately. When a leak occurs in an individual pipe bank 21, the inlet 5 and outlet 6 of the pipe bank 21 are first disconnected from the corresponding pipeline, and the control valve on the corresponding pipeline of the inlet 5 and outlet 6 of the pipe bank 21 is closed, and then the U-shaped elbow 211 in the pipe bank 21 is removed, and then the mounting plate 20 is released from the fixed connection with the front support plate 3, and then the mounting plate 20 is moved in the horizontal direction, so that the U-shaped pipe fitting 210 on the pipe bank 21 is pulled out from the rear support plate 4 and the front support plate 3 in the horizontal direction, so as to facilitate the replacement or maintenance of the pipe bank 21, and finally the repaired pipe bank 21 or the new pipe bank is reinstalled on the bracket 1. Since each pipe bank 21 can be disassembled separately, the convenience of maintenance of the low-temperature economizer is greatly facilitated. During the maintenance period, since the control valves on the corresponding pipelines of the inlet 5 and outlet 6 of the maintenance pipe bank 21 are already in a closed state, it does not affect the normal use of the remaining pipe banks 21.
[0022] like Figure 2 , Figure 3 and Figure 4 As shown, the U-shaped pipe fitting 210 has two ports 7, and the outer circumferences of the two ports 7 are sleeved with connecting sleeves 213, which are fixedly connected to the U-shaped pipe fitting 210, and the end surface of the connecting sleeve 213 is provided with a threaded hole 8, and both ends of the U-shaped elbow 211 have flanges 214, and the flanges 214 and the connecting sleeves 213 are connected by fasteners. Both ends of the U-shaped elbow 211 are fixedly connected to the connecting sleeves 213 on the two ports 7 through the flanges 214, and the U-shaped elbow 211 is conveniently and firmly connected to the ports 7 of the U-shaped pipe fitting 210, and the connection structure has good sealing performance.
[0023] like Figure 3 As shown, a rear mounting hole 40 is provided on the rear support plate 4 corresponding to each port 7, each connecting sleeve 213 is located in the corresponding rear mounting hole 40, and the end of the connecting sleeve 213 is located outside the rear mounting hole 40. The structure in which the connecting sleeve 213 is located in the rear mounting hole 40 enables the rear support plate 4 to support the end of the U-shaped pipe 210, thereby ensuring the stability of the installation of the U-shaped pipe 210, and the structure in which the end of the connecting sleeve 213 is located outside the rear mounting hole 40 facilitates the connection between the end of the connecting sleeve 213 and the flange 214.
[0024] like Figure 2 As shown, a front mounting hole 30 is provided at a position corresponding to each U-shaped pipe 210 on the front support plate 3, and each U-shaped pipe 210 is arranged through two front mounting holes 30, and the inner diameter of the front mounting hole 30 is larger than the outer diameter of the connecting sleeve 213. The arrangement of the front mounting holes 30 facilitates the U-shaped pipe 210 to be inserted into the front support plate 3, and the inner diameter of the front mounting hole 30 is larger than the outer diameter of the connecting sleeve 213 so that the U-shaped pipe 210 can be pulled out from the front support plate 3.
[0025] like Figure 4 and Figure 6 As shown, the mounting plate 20 is provided with through holes 200 at positions corresponding to each U-shaped pipe fitting 210, and each U-shaped pipe fitting 210 is arranged through two through holes 200. Two flanges 215 are sleeved on each U-shaped pipe fitting 210, and the flanges 215 are connected to the mounting plate 20 through fasteners. The provision of the through holes 200 facilitates the U-shaped pipe fitting 210 to be passed through the mounting plate 20, and the U-shaped pipe fitting 210 is fixed to the mounting plate 20 after the flanges 215 are fixed to the mounting plate 20 through fasteners. This structure makes the U-shaped pipe fitting 210 detachable from the mounting plate 20. When the pipe row 21 leaks or is damaged, the U-shaped pipe fitting 210 with the problem can be replaced without replacing the entire pipe row 21, thereby reducing the maintenance cost and further improving the convenience of maintenance.
[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A low-temperature economizer that is convenient and quick to maintain, comprising a support (1) and a plurality of tube row assemblies (2) vertically spaced on the support (1), wherein the support (1) comprises a front support plate (3) and a rear support plate (4), characterized in that: The tube row assembly (2) comprises a mounting plate (20) and a tube row (21); the tube row (21) comprises at least two U-shaped tubes (210) passing through the mounting plate (20); all the U-shaped tubes (210) are arranged at intervals along the length direction of the mounting plate (20); the mounting plate (20) is detachably fixed to the outer side wall of the front support plate (3); the U-shaped tubes (210) pass through the front support plate (3) and the rear support plate (4) in the horizontal direction; two adjacent U-shaped tubes (210) are connected in series via U-shaped elbows (211); and one end of the tube row (21) facing the rear support plate (4) has an inlet (5) and an outlet (6); all the inlets (5) and all the outlets (6) are respectively located on the left and right sides of the rear support plate (4), and all the inlets (5) and all the outlets (6) are arranged at intervals in the vertical direction.
2. A low-temperature economizer that is convenient and quick to maintain according to claim 1, characterized in that: The U-shaped pipe fitting (210) has two ports (7), and the outer circumferential surfaces of the two ports (7) are sleeved with connecting sleeves (213). The connecting sleeves (213) are fixedly connected to the U-shaped pipe fitting (210), and the end surface of the connecting sleeve (213) is provided with a threaded hole (8). Both ends of the U-shaped elbow (211) have flange plates (214), and the flange plates (214) and the connecting sleeves (213) are connected via fasteners.
3. A low-temperature economizer that is convenient and quick to maintain according to claim 2, characterized in that: A rear mounting hole (40) is provided on the rear support plate (4) corresponding to each port (7), each connecting sleeve (213) is located in the corresponding rear mounting hole (40), and an end of the connecting sleeve (213) is located outside the rear mounting hole (40).
4. A low-temperature economizer that is convenient and quick to maintain according to claim 2, characterized in that: A front mounting hole (30) is provided on the front support plate (3) at a position corresponding to each U-shaped pipe member (210), each U-shaped pipe member (210) is arranged through two front mounting holes (30), and the inner diameter of the front mounting hole (30) is greater than the outer diameter of the connecting sleeve (213).
5. A low-temperature economizer that is convenient and quick to maintain according to claim 1, characterized in that: The mounting plate (20) is provided with through holes (200) at positions corresponding to each U-shaped pipe fitting (210), each U-shaped pipe fitting (210) is arranged through two through holes (200), each U-shaped pipe fitting (210) is sleeved with two second flanges (215), and the second flanges (215) are connected to the mounting plate (20) via fasteners.
6. A low-temperature economizer that is convenient and quick to maintain according to claim 1, characterized in that: The mounting plate (20) and the front support plate (3) are connected via bolts (9).