A once-through boiler water wall

Abstract

The utility model discloses a once-through boiler water cooling wall concretely relates to boiler water cooling wall technical field, including two water cooling wall pipes of being located once-through boiler outside, is equipped with a plurality of connecting pipes between two water cooling wall pipes, and the outside of water cooling wall pipe is equipped with the dismounting mechanism of installing and dismounting to connecting pipe, and the bottom of water cooling wall pipe is equipped with the mounting flange, and the dismounting mechanism includes four fixed plates of being located the outside of water cooling wall pipe, and the side fixed communication of water cooling wall pipe has four first installation pipes, and the both sides of connecting pipe all have four second installation pipes, and every fixed plate one side all is equipped with the first limit board, and the first limit board one side is equipped with the second limit board. The utility model discloses through the dismounting mechanism can make water cooling wall pipe and connecting pipe between dismounting, replace the damaged water cooling wall pipe or connecting pipe, reduce the cost, still through the fixed mechanism can install water cooling wall pipe on once-through boiler, convenient to use, increase stability.

Description

Technical Field

[0001] This utility model relates to the field of boiler water-cooled wall technology, specifically to a direct-flow boiler water-cooled wall. Background Technology

[0002] When a boiler is working, it needs to use water-cooled walls. The water-cooled walls are the main heat-receiving part of the boiler. They are composed of several rows of steel pipes distributed around the boiler furnace. The inside of the water-cooled walls is filled with flowing water or steam. They receive heat from the flames in the boiler furnace and mainly absorb the radiant heat from the high-temperature combustion products in the furnace. The working fluid moves upward within them and evaporates due to heat.

[0003] For example, Chinese patent application No. 202322186376.3 discloses a boiler water-cooled wall, including a water-cooled wall tube. Fins are welded to one side of the water-cooled wall tube, a connecting pipe is connected to one end of the water-cooled wall tube, and a circulation pipe is connected to the upper end of the water-cooled wall tube. This technical solution uses a wear-resistant layer on the outer surface of the water-cooled wall tube to protect it from wear and tear, preventing severe wear during long-term use and thus reducing its heat resistance. Furthermore, the refractory layer allows for the addition of cobalt to the steel during manufacturing, resulting in better high-temperature resistance and increased service life. The anti-corrosion layer primarily protects the interior of the water-cooled wall tube from corrosion, preventing internal rust and corrosion caused by prolonged immersion in water.

[0004] However, the following problem still exists in this technical solution: when one section of the water-cooled wall tube is damaged, the entire water-cooled wall tube needs to be replaced, which is costly. Utility Model Content

[0005] The purpose of this utility model is to provide a water-cooled wall for a DC boiler. The disassembly mechanism allows for the disassembly of the water-cooled wall tubes and connecting pipes, enabling the replacement of damaged water-cooled wall tubes or connecting pipes, thus reducing costs. The fixing mechanism also allows for the installation of the water-cooled wall tubes on the DC boiler, facilitating use and increasing stability, thereby addressing the aforementioned shortcomings in the technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water-cooled wall for a DC boiler, comprising two water-cooled wall tubes disposed outside the DC boiler, multiple connecting pipes connecting the two water-cooled wall tubes, a disassembly mechanism for installing and disassembling the connecting pipes being provided outside the water-cooled wall tubes, and an installation flange being provided at the bottom of the water-cooled wall tubes.

[0007] Preferably, the disassembly mechanism includes four fixing plates located outside the water-cooled wall tube. Four first mounting pipes are fixedly connected to one side of the water-cooled wall tube, and four second mounting pipes are connected to both sides of the connecting pipe. Each fixing plate has a first limiting plate on one side and a second limiting plate on one side. Each first limiting plate and second limiting plate has a sealing ring inside for installing and disassembling the connecting pipe.

[0008] Preferably, both the first limiting plate and the second limiting plate have first threaded holes on both sides, and the two connected first threaded holes are internally threaded with the same first bolt for fixing the first limiting plate and the second limiting plate together.

[0009] Preferably, each first limiting plate is fixedly provided with a threaded rod at its top, and the fixing plate is provided with multiple insertion holes. The threaded rod passes through the insertion holes, and each threaded rod is threaded with a nut for disassembling and installing the first limiting plate.

[0010] Preferably, the water-cooled wall tube is provided with a fixing mechanism for installing the water-cooled wall tube. The fixing mechanism includes a mounting plate on one side of the water-cooled wall tube. The mounting plate has multiple insertion slots, which are adapted to the water-cooled wall tube and the connecting pipe respectively. There are two third threaded holes on both sides of the mounting plate. The two connected third threaded holes are internally threaded with the same third bolt for installing the water-cooled wall tube.

[0011] Preferably, each insertion slot has a support plate on one side, and a connecting plate is fixed on both sides of the support plate. The mounting plate has a mounting groove that matches the support plate. The connecting plate and the mounting groove both have a second threaded hole inside. The two connected second threaded holes are threaded with the same second bolt for fixing the water-cooled wall tube and the connecting tube.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. Rotate the first bolt to unscrew it from the first threaded hole. Then pull the second limiting plate to remove it from the bottom of the first limiting plate. Next, pull the fixing plate to remove the first limiting plate from the first mounting tube and the second mounting tube. This allows the water-cooled wall tube and the connecting tube to be disassembled, and damaged water-cooled wall tubes or connecting tubes to be replaced, thus reducing costs.

[0014] 2. Insert the water-cooled wall tubes and connecting pipes into the insertion slots respectively. Insert the connecting plate on the support plate into the mounting slot. Turn the second bolt to turn it into the second threaded hole. Use the second bolt to fix the support plate on the mounting plate. The support plate can fix the water-cooled wall tubes and connecting pipes on the mounting plate. Then turn the third bolt to install the water-cooled wall tubes on the once-through boiler, which is convenient to use and increases stability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a front view of the present invention;

[0017] Figure 2 This is a bottom view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the water storage pipe and connecting pipe of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first mounting tube and the second mounting tube of this utility model;

[0020] Figure 5 This is a schematic diagram of the fixing mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the disassembly mechanism of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Water-cooled wall tube; 2. Connecting pipe;

[0024] 3 Disassembly mechanism, 301 Fixing plate, 302 First limiting plate, 303 Second limiting plate, 304 First threaded hole, 305 First bolt, 306 Sealing ring, 307 Threaded rod, 308 Insertion hole, 309 Nut, 310 First mounting tube, 311 Second mounting tube;

[0025] 4 Fixing mechanism, 401 Mounting plate, 402 Insertion slot, 403 Support plate, 404 Connecting plate, 405 Mounting slot, 406 Second threaded hole, 407 Second bolt, 408 Third threaded hole, 409 Third bolt;

[0026] 5. Install flanges. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides, for example Figure 1-6The water-cooled wall of a DC boiler shown includes two water-cooled wall tubes 1 located outside the DC boiler, with multiple connecting pipes 2 connecting the two water-cooled wall tubes 1. A disassembly mechanism 3 for installing and disassembling the connecting pipes 2 is provided outside the water-cooled wall tubes 1, and an installation flange 5 is provided at the bottom of the water-cooled wall tubes 1.

[0029] like Figure 6 As shown, the disassembly mechanism 3 includes four fixing plates 301 located outside the water-cooled wall tube 1. Four first mounting tubes 310 are fixedly connected to one side of the water-cooled wall tube 1, and four second mounting tubes 311 are connected to both sides of the connecting tube 2. Each fixing plate 301 has a first limiting plate 302 on one side and a second limiting plate 303 on one side. Each first limiting plate 302 and second limiting plate 303 has a sealing ring 306 inside. First threaded holes 304 are opened on both sides of the first limiting plate 302 and second limiting plate 303. The same first bolt 305 is threaded inside the two connected first threaded holes 304.

[0030] like Figure 6 As shown, each first limiting plate 302 is fixedly provided with a threaded rod 307 at its top. The fixing plate 301 is provided with multiple insertion holes 308. The threaded rod 307 passes through the insertion holes 308. Each threaded rod 307 is threadedly connected to a nut 309.

[0031] Connect the first mounting tube 310 on the water-cooled wall tube 1 to the second mounting tube 311 on the connecting tube 2. Place the first limiting plate 302 and the second limiting plate 303 on both sides of the first mounting tube 310 and the second mounting tube 311 respectively. Rotate the first bolt 305 to rotate it into the two connected first threaded holes 304. The first limiting plate 302 and the second limiting plate 303 can be fixed to the outside of the first mounting tube 310 and the second mounting tube 311 by the first bolt 305. The sealing ring 306 can seal the connection between the first mounting tube 310 and the second mounting tube 311 to prevent liquid leakage.

[0032] Rotate the first bolt 305 to unscrew it from the first threaded hole 304, then pull the second limiting plate 303 to remove it from the bottom of the first limiting plate 302. Then pull the fixing plate 301 to remove the first limiting plate 302 from the first mounting tube 310 and the second mounting tube 311. This allows the water-cooled wall tube 1 and the connecting tube 2 to be disassembled, and the damaged water-cooled wall tube 1 or connecting tube 2 to be replaced, thus reducing costs.

[0033] Rotate the nut 309 to unscrew the threaded rod 307, and pull the first limiting plate 302 to remove the fixing plate 301 from the first limiting plate 302. This facilitates the replacement of the first limiting plate 302 and extends the service life of this utility model.

[0034] like Figure 5 As shown, a fixing mechanism 4 for installing the water-cooled wall tube 1 is provided on the outside of the water-cooled wall tube 1. The fixing mechanism 4 includes a mounting plate 401 on one side of the water-cooled wall tube 1. The mounting plate 401 has multiple insertion slots 402, which are adapted to the water-cooled wall tube 1 and the connecting pipe 2 respectively. There are two third threaded holes 408 on both sides of the mounting plate 401. The two connected third threaded holes 408 are internally threaded with the same third bolt 409.

[0035] like Figure 5 As shown, each insertion slot 402 is provided with a support plate 403 on one side, and a connecting plate 404 is fixedly provided on both sides of the support plate 403. The mounting plate 401 is provided with a mounting groove 405, which is adapted to the support plate 403. The connecting plate 404 and the mounting groove 405 are provided with a second threaded hole 406. The two connected second threaded holes 406 are threadedly connected with the same second bolt 407.

[0036] Insert the water-cooled wall tube 1 and the connecting tube 2 into the insertion slot 402 respectively. Insert the connecting plate 404 on the support plate 403 into the mounting slot 405. Rotate the second bolt 407 to turn it into the second threaded hole 406. Use the second bolt 407 to fix the support plate 403 onto the mounting plate 401. The support plate 403 can fix the water-cooled wall tube 1 and the connecting tube 2 onto the mounting plate 401. Then rotate the third bolt 409 to install the water-cooled wall tube 1 onto the once-through boiler, which is convenient to use and increases stability.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A water-cooled wall for a once-through boiler, comprising two water-cooled wall tubes (1) disposed outside the once-through boiler, characterized in that: Multiple connecting pipes (2) are provided between the two water-cooled wall tubes (1), and a disassembly mechanism (3) for installing and disassembling the connecting pipes (2) is provided on the outside of the water-cooled wall tubes (1); The disassembly mechanism (3) includes four fixing plates (301) disposed outside the water-cooled wall tube (1). Four first mounting pipes (310) are fixedly connected to one side of the water-cooled wall tube (1). Four second mounting pipes (311) are connected to both sides of the connecting pipe (2). Each fixing plate (301) is provided with a first limiting plate (302) on one side. A second limiting plate (303) is provided on one side of the first limiting plate (302). Each first limiting plate (302) and second limiting plate (303) is provided with a sealing ring (306) inside.

2. The water-cooled wall of a once-through boiler according to claim 1, characterized in that: The first limiting plate (302) and the second limiting plate (303) are provided with first threaded holes (304) on both sides, and the two connected first threaded holes (304) are internally threaded with the same first bolt (305).

3. The water-cooled wall of a once-through boiler according to claim 1, characterized in that: Each of the first limiting plates (302) is fixedly provided with a threaded rod (307) at its top. The fixing plate (301) is provided with a plurality of insertion holes (308). The threaded rod (307) passes through the insertion holes (308). Each threaded rod (307) is externally threaded with a nut (309).

4. The water-cooled wall of a once-through boiler according to claim 1, characterized in that: The water-cooled wall tube (1) is provided with a fixing mechanism (4) for installing the water-cooled wall tube (1) on the outside; The fixing mechanism (4) includes a mounting plate (401) on one side of the water-cooled wall tube (1). The mounting plate (401) has multiple insertion slots (402) which are adapted to the water-cooled wall tube (1) and the connecting pipe (2) respectively. There are two third threaded holes (408) on both sides of the mounting plate (401). The two connected third threaded holes (408) are internally threaded with the same third bolt (409).

5. A water-cooled wall for a once-through boiler according to claim 4, characterized in that: Each of the insertion slots (402) is provided with a support plate (403) on one side, and a connecting plate (404) is fixedly provided on both sides of the support plate (403). The mounting plate (401) is provided with a mounting groove (405), which is adapted to the support plate (403). The connecting plate (404) and the mounting groove (405) are both provided with a second threaded hole (406). The two connected second threaded holes (406) are threadedly connected with the same second bolt (407).

6. The water-cooled wall of a once-through boiler according to claim 1, characterized in that: The bottom of the water-cooled wall tube (1) is provided with an installation flange (5).

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