Double-drum natural circulation hot water boiler

Abstract

The utility model discloses a double-drum natural circulation hot water boiler, and relates to the technical field of boilers. The device comprises a base, a combustion chamber is formed in the base, and supporting plates are fixed to the two sides of the combustion chamber; fixing plates are fixed to the two sides of the supporting plate, and a baffle is fixed between the two fixing plates. The upper surface of the baffle is movably connected with a reinforcing frame, the upper surface of the reinforcing frame is fixedly provided with reinforcing ribs, and the upper surfaces of the reinforcing ribs are fixedly provided with supports; fixing rods are movably connected to the upper surfaces of the supports, and limiting rods are fixed to the tops of the fixing rods; a plurality of convection pipes are fixed to the top of the lower boiler barrel. According to the double-drum boiler, through the action of the base, the reinforcing frame and the fixing rods, the base, the reinforcing frame and the fixing rods are installed in a combined mode, compared with a traditional welding mode, the boiler can be transported more conveniently through the installation mode, the boiler can be disassembled and overhauled conveniently, and therefore the service life of the double-drum boiler is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of boilers, in particular to a double-drum natural circulation hot water boiler. Background Art

[0002] There are many types of double-drum self-circulating water-tube boilers currently in use. Generally, the upper drum has a larger diameter and a longer drum than the lower drum. The two drums are placed parallel and longitudinally on the same vertical plane, and there are two groups of convection tube bundles connected between the drums. Two longitudinal flue gas partitions are set at the left front and middle rear of the tube bundle. In the two groups of convection tube bundles, the first group of convection tubes are heated by high-temperature flue gas, and the water or steam-water mixture has a low density and flows upward; the second group of convection tubes absorb less heat, and the water has a low temperature and a high density and flows downward, thus forming a water circulation system between the upper and lower drums. The advantage of this boiler is that the distance between the upper and lower drums can be changed, as well as the number of rows and tube spacing of the convection tube bundles, so that the flue gas flow rate can be kept within the required range. The flue partition wall is set along the center line of the drum, which is conducive to removing the ash accumulation at the bottom of the tube bundle and facilitating the full combustion of the fuel.

[0003] The existing double-drum boiler is assembled by welding several structures. After some welding is completed, it is transported to the factory. Due to the large size of the double-drum boiler, the transportation cost is high. At the same time, it is not convenient to conduct a comprehensive inspection of the inside of the double-drum boiler after welding. Utility Model Content

[0004] The purpose of the utility model is to provide a double-drum natural circulation hot water boiler. Through the functions of a base, a reinforcement frame and a fixing rod, the device sets the base, the reinforcement frame and the fixing rod for combined installation. Compared with traditional welding, this installation method is more convenient for transporting the boiler and convenient for disassembling and repairing the boiler, thereby improving the service life of the double-drum boiler and solving the problems that the existing double-drum boiler is large in size and has a high transportation cost, and it is not convenient to carry out comprehensive maintenance of the inside of the double-drum boiler after welding and fixing.

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

[0006] A double-drum natural circulation hot water boiler comprises a base, a combustion chamber is formed inside the base, and support plates are fixed on both sides of the combustion chamber;

[0007] Fixed plates are fixed on both sides of the support plate, and a baffle is fixed between the two fixed plates;

[0008] The upper surface of the baffle is movably connected with a reinforcement frame, the upper surface of the reinforcement frame is fixed with a reinforcement rib, and the upper surface of the reinforcement rib is fixed with a bracket;

[0009] A fixing rod is movably connected to the upper surface of the bracket, and a limiting rod is fixed on the top of the fixing rod;

[0010] A lower drum is fixed to one end of the limit rod, and a plurality of convection tubes are fixed to the top of the lower drum;

[0011] An upper drum is fixed to one end of the convection tube, and a plurality of limiting rings are fixed to the outer wall of the upper drum;

[0012] A positioning tube is movably connected between the limiting rings, positioning plates are fixed on both sides of the positioning tube, and a first threaded hole is opened on the surface of the positioning plate;

[0013] A support frame is fixed at the bottom of the positioning tube, and a mounting plate is fixed at the bottom of the support frame;

[0014] Limiting plates are fixed on both sides of the fixing rod, and second threaded holes are opened on the surfaces of the limiting plates and the mounting plate.

[0015] The utility model is further configured as follows: a placement groove is provided on the upper surface of the baffle plate, and a clamping rod is fixed on the bottom of the reinforcement frame;

[0016] A plurality of positioning rods are fixed to the bottom of the clamping rod, and a plurality of positioning holes are opened on the upper surface of the support plate;

[0017] The positioning rod matches the positioning hole.

[0018] The utility model is further configured as follows: a mounting groove is provided on the upper surface of the baffle plate, and a mounting block is fixed to one end of the fixing rod;

[0019] The mounting block passes through the mounting groove.

[0020] The utility model is further configured as follows: a connecting plate is fixed on the outer side of the mounting block, and third threaded holes are opened on the surfaces of the connecting plate and the baffle.

[0021] The utility model is further configured as follows: a fixing groove is provided on the upper surface of the fixing plate, and a connecting rod is fixed on the bottom of the reinforcement frame.

[0022] The utility model is further configured as follows: a fourth threaded hole is provided on one side of the fixing groove and on the surface of the connecting rod.

[0023] The utility model is further configured as follows: an air collecting pipe is fixed on the top of the fixing rod, and the opening of the air collecting pipe is located at the bottom of the upper boiler drum.

[0024] The utility model has the following beneficial effects:

[0025] 1. The utility model uses the base, reinforcement frame and fixing rod to arrange the base, reinforcement frame and fixing rod for combined installation. Compared with traditional welding, this installation method is more convenient for transporting the boiler and disassembling and repairing the boiler, thereby improving the service life of the double-drum boiler.

[0026] 2. The utility model uses the clamping rod and the placement groove. The mounting block passes through the gap between the reinforcement frame and the reinforcement rib and is clamped into the mounting groove. Then the bolt is screwed into the third threaded hole, so that the connection between the base, the reinforcement frame and the fixing rod can be strengthened, making the structure of the device more stable and preventing the boiler from shaking when in use.

[0027] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 The utility model is a structural schematic diagram of a double-drum natural circulation hot water boiler.

[0030] Figure 2 It is a schematic diagram of the side view structure of the utility model.

[0031] Figure 3 It is a schematic diagram of the structure of the upper drum and the lower drum of the utility model.

[0032] Figure 4 It is a schematic diagram of the base structure of the utility model.

[0033] Figure 5 It is a schematic diagram of the reinforcement frame structure of the utility model.

[0034] Figure 6 It is a schematic diagram of the structure of the reinforcement frame of the utility model when viewed from the bottom.

[0035] Figure 7 This is a schematic diagram of the positioning tube structure of the utility model.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1-base, 2-combustion chamber, 3-support plate, 4-fixing plate, 5-baffle, 6-reinforcement frame, 7-strengthening rib, 8-bracket, 9-fixing rod, 10-limiting rod, 11-lower drum, 12-convection tube, 13-upper drum, 14-limiting ring, 15-positioning tube, 16-positioning plate, 17-first threaded hole, 18-support frame, 19-mounting plate, 20-limiting plate, 21-second threaded hole, 22-placing groove, 23-clamping rod, 24-positioning rod, 25-positioning hole, 26-mounting groove, 27-mounting block, 28-connecting plate, 29-third threaded hole, 30-fixing groove, 31-connecting rod, 32-fourth threaded hole, 33-gas collecting pipe. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0040] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention. Specific embodiment 1

[0042] See also Figure 1-7 The utility model is a double-drum natural circulation hot water boiler, comprising a base 1, a combustion chamber 2 is formed inside the base 1, and support plates 3 are fixed on both sides of the combustion chamber 2;

[0043] Fixed plates 4 are fixed on both sides of the support plate 3, and a baffle 5 is fixed between the two fixed plates 4;

[0044] The upper surface of the baffle 5 is movably connected with a reinforcement frame 6, the upper surface of the reinforcement frame 6 is fixed with a reinforcement rib 7, and the upper surface of the reinforcement rib 7 is fixed with a bracket 8;

[0045] A fixing rod 9 is movably connected to the upper surface of the bracket 8, and a limiting rod 10 is fixed on the top of the fixing rod 9;

[0046] A lower drum 11 is fixed to one end of the limit rod 10, and a plurality of convection tubes 12 are fixed to the top of the lower drum 11;

[0047] An upper drum 13 is fixed to one end of the convection tube 12, and a plurality of limiting rings 14 are fixed to the outer wall of the upper drum 13;

[0048] A positioning tube 15 is movably connected between the limiting rings 14, and positioning plates 16 are fixed on both sides of the positioning tube 15. A first threaded hole 17 is opened on the surface of the positioning plate 16;

[0049] A support frame 18 is fixed at the bottom of a positioning tube 15, and a mounting plate 19 is fixed at the bottom of the support frame 18;

[0050] Limiting plates 20 are fixed on both sides of the fixing rod 9 , and second threaded holes 21 are formed on the surfaces of the limiting plates 20 and the mounting plate 19 .

[0051] Specifically, a placement groove 22 is opened on the upper surface of the baffle 5, and a clamping rod 23 is fixed at the bottom of the reinforcement frame 6;

[0052] A plurality of positioning rods 24 are fixed to the bottom of the clamping rod 23, and a plurality of positioning holes 25 are opened on the upper surface of the support plate 3;

[0053] The positioning rod 24 matches the positioning hole 25 .

[0054] Furthermore, an air collecting pipe 33 is fixed to the top of the fixing rod 9 , and the opening of the air collecting pipe 33 is located at the bottom of the upper drum 13 .

[0055] The operation process of this embodiment is as follows: when the device is in use, after the base 1 is fixed, the fixing rod 9 is placed on the reinforcement frame 6. After the fixing rod 9 is fixed, the base 1, the reinforcement frame 6 and the fixing rod 9 are fixed, and then the positioning tube 15 is clamped between the two limit rings 14 on the surface of the upper drum 13, and after the mounting plate 19 and the limit plate 20 are released, the bolt is screwed into the second threaded hole 21, and the support frame 18 supports the outer side of the upper drum 13 to keep the upper drum 13 stable. When working, the combustion chamber 2 is pushed into the combustion chamber 2. Fuel is filled in, and hot gas generated by the combustion of the fuel flows upward through the collecting pipe 33 to heat the bottom of the upper drum 13. Since a number of convection tubes 12 are connected between the upper drum 13 and the lower drum 11, water flows between the upper drum 13 and the lower drum 11. The device arranges the base 1, the reinforcement frame 6 and the fixing rod 9 for combined installation. Compared with traditional welding, this installation method is more convenient for transportation of the boiler and convenient for disassembly and maintenance of the boiler, thereby improving the service life of the double-drum boiler. Specific embodiment 2

[0057] See also Figure 4-6 , based on the specific embodiment 1, a mounting groove 26 is opened on the upper surface of the baffle 5, and a mounting block 27 is fixed to one end of the fixing rod 9;

[0058] The mounting block 27 passes through the mounting groove 26 .

[0059] Specifically, a connecting plate 28 is fixed to the outer side of the mounting block 27 , and third threaded holes 29 are formed on the surfaces of the connecting plate 28 and the baffle plate 5 .

[0060] Furthermore, a fixing groove 30 is formed on the upper surface of the fixing plate 4, and a connecting rod 31 is fixed to the bottom of the reinforcement frame 6;

[0061] A fourth threaded hole 32 is formed on one side of the fixing groove 30 and on the surface of the connecting rod 31 .

[0062] The operation process of this embodiment is as follows: after fixing the base 1, the clamping rod 23 at the bottom of the reinforcement frame 6 is clamped into the placement groove 22 on the upper surface of the baffle 5, and the positioning rod 24 is kept clamped in the positioning hole 25. At this time, the connecting rod 31 is clamped into the fixing groove 30, and the bolt is turned into the fourth threaded hole 32, so that the reinforcement frame 6 can be fixed on the base 1; at the same time, the positioning rod 24 is clamped into the positioning hole 25 to ensure the stability of the reinforcement frame 6. At the same time, the mounting block 27 passes through the gap between the reinforcement frame 6 and the reinforcing rib 7, is clamped into the mounting groove 26, and then the bolt is turned into the third threaded hole 29, so that the connection between the base 1, the reinforcement frame 6 and the fixing rod 9 can be strengthened, making the structure of the device more stable and avoiding the shaking of the boiler during use.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-drum natural circulation hot water boiler, comprising a base (1), characterized in that: A combustion chamber (2) is formed inside the base (1), and support plates (3) are fixed on both sides of the combustion chamber (2); Fixed plates (4) are fixed on both sides of the support plate (3), and a baffle (5) is fixed between the two fixed plates (4); The upper surface of the baffle (5) is movably connected to a reinforcement frame (6), the upper surface of the reinforcement frame (6) is fixed with a reinforcement rib (7), and the upper surface of the reinforcement rib (7) is fixed with a bracket (8); A fixing rod (9) is movably connected to the upper surface of the bracket (8), and a limiting rod (10) is fixed to the top of the fixing rod (9); A lower drum (11) is fixed to one end of the limiting rod (10), and a plurality of convection tubes (12) are fixed to the top of the lower drum (11); An upper drum (13) is fixed to one end of the convection tube (12), and a plurality of limiting rings (14) are fixed to the outer wall of the upper drum (13); A positioning tube (15) is movably connected between the limiting rings (14), positioning plates (16) are fixed on both sides of the positioning tube (15), and a first threaded hole (17) is opened on the surface of the positioning plate (16); A support frame (18) is fixed at the bottom of the positioning tube (15), and a mounting plate (19) is fixed at the bottom of the support frame (18); Limiting plates (20) are fixed on both sides of the fixing rod (9), and second threaded holes (21) are formed on the surfaces of the limiting plates (20) and the mounting plate (19).

2. A double-drum natural circulation hot water boiler according to claim 1, characterized in that: The upper surface of the baffle (5) is provided with a placement groove (22), and the bottom of the reinforcement frame (6) is fixed with a clamping rod (23); A plurality of positioning rods (24) are fixed to the bottom of the clamping rod (23), and a plurality of positioning holes (25) are opened on the upper surface of the support plate (3); The positioning rod (24) matches the positioning hole (25).

3. A double-drum natural circulation hot water boiler according to claim 1, characterized in that: The baffle (5) has a mounting groove (26) on its upper surface, and a mounting block (27) is fixed to one end of the fixing rod (9); The mounting block (27) passes through the mounting groove (26).

4. A double-drum natural circulation hot water boiler according to claim 3, characterized in that: A connecting plate (28) is fixed on the outside of the mounting block (27), and third threaded holes (29) are formed on the surfaces of the connecting plate (28) and the baffle (5).

5. A double-drum natural circulation hot water boiler according to claim 1, characterized in that: A fixing groove (30) is formed on the upper surface of the fixing plate (4), and a connecting rod (31) is fixed to the bottom of the reinforcement frame (6).

6. A double-drum natural circulation hot water boiler according to claim 5, characterized in that: A fourth threaded hole (32) is formed on one side of the fixing groove (30) and on the surface of the connecting rod (31).

7. A double-drum natural circulation hot water boiler according to claim 1, characterized in that: A gas collecting pipe (33) is fixed on the top of the fixing rod (9), and the opening of the gas collecting pipe (33) is located at the bottom of the upper boiler drum (13).

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