Water circulation system of boiler

Abstract

The utility model provides a boiler water circulation system which comprises a water segregator, the water inlet end of the water segregator is connected with the liquid outlet end of a circulating pump through a connecting pipe, the liquid inlet end of the circulating pump is provided with a water conveying pipe used for being connected with a boiler hot water chamber through a bolt, and the circulating pump and the water segregator are both installed in a bottom box. A detachable top cover is installed at the upper end of the bottom box, the water conveying pipe penetrates through one side face of the bottom box, a plurality of hot water pipes are installed on the upper portion of the outer surface of the water segregator at equal intervals through bolts, and the ends, away from the water segregator, of the hot water pipes penetrate through the top cover; the top cover is installed on the upper surface of the bottom box, an exhaust valve is installed on the upper portion of one side face of the bottom box, and a detection piece used for detecting air pressure in a space formed by the bottom box and the top cover is installed on the upper surface of the top cover. The bolt oxidation corrosion is prevented.

Description

Technical Field

[0001] The utility model relates to a water circulation system for a boiler, belonging to the technical field of boilers. Background Art

[0002] The water distributor and circulating pump are one of the main components of boiler water circulation. Multiple hot water pipes are installed on the water distributor. The flanges on the hot water pipes are connected to the flanges on the water distributor through multiple bolts. The flanges on the liquid inlet and outlet ends of the circulating pump are also connected to the flanges on the water pipe through multiple bolts. When pumping hot water in the boiler, the bolts connecting the hot water pipe and the water distributor, the bolts connecting the circulating pump and the water pipe, etc. will increase in temperature due to heat radiation, while the bolts connecting the hot water pipe and the water distributor, the bolts connecting the circulating pump and the water pipe, etc. are exposed. Therefore, the bolts connecting the hot water pipe and the water distributor, the bolts connecting the circulating pump and the water pipe, etc. will rust faster under the conditions of sufficient oxygen and increased temperature, which on the one hand affects the service life, and on the other hand is not conducive to disassembly and assembly in the later stage. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a water circulation system for a boiler to solve the problems raised in the above-mentioned background technology. The utility model implements the arrangement of the bolts connecting the water distributor and the hot water pipe and the bolts connecting the circulation pump and the water supply pipeline in an oxygen-deficient environment to prevent the bolts from oxidation and rust.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a water circulation system of a boiler, including a water distributor, the water inlet end of the water distributor is connected to the liquid outlet end of a circulation pump through a connecting pipe, the liquid inlet end of the circulation pump is installed with a water pipe for connecting to a hot water chamber of the boiler through bolts, the circulation pump and the water distributor are both installed in a bottom box, a detachable top cover is installed at the upper end of the bottom box, the water pipe passes through a side surface of the bottom box, a plurality of hot water pipes are equidistantly installed at the upper position of the outer surface of the water distributor through bolts, the end of the hot water pipe away from the water distributor passes through the top cover, a stop valve is installed at the lower position of a side surface of the bottom box, an exhaust valve is installed at the upper position of a side surface of the bottom box, and a detection component for detecting the air pressure in the space formed by the bottom box and the top cover is installed on the upper surface of the top cover.

[0005] Furthermore, the detection component includes a transparent cylinder, a vertically arranged circular opening is provided on the upper surface of the top cover, a transparent cylinder is provided on the upper side of the circular opening, the lower end of the transparent cylinder is open, the lower end of the transparent cylinder is connected and fixed to the top cover through a connecting piece, a vent hole is provided in the middle position of the upper surface of the transparent cylinder, a vertically arranged spring is provided in the upper position inside the transparent cylinder, a piston is connected and fixed to the lower end of the spring, and the piston is slidably installed in the transparent cylinder.

[0006] Furthermore, the connecting piece includes a ring platform, a ring platform concentrically arranged with the circular mouth is provided on the upper side of the circular mouth, the ring platform is connected and fixed to the top cover, the inner diameter of the ring platform is smaller than the piston diameter, a connecting ring is connected and fixed to the lower end of the transparent cylinder, a plurality of small holes are equidistantly opened in a circular shape on the upper surface of the connecting ring, a plurality of screw holes are equidistantly opened in a circular shape on the upper surface of the ring platform, screws are inserted in the small holes, and one end of the screw is threadedly connected in the screw hole.

[0007] Furthermore, a sealing strip is installed between the top cover and the bottom box, upper ears are connected and fixed on two parallel sides of the top cover, lower ears are provided on the lower sides of the upper ears, the lower ears are connected and fixed to the bottom box, and the upper ears are connected and fixed to the lower ears by multiple bolts.

[0008] Furthermore, two support plates are connected and fixed to the bottom of the bottom box, the two support plates are arranged vertically and are symmetrically installed on the bottom of the bottom box.

[0009] Furthermore, a plurality of vertical holes are evenly formed on the upper surface of the top cover, and the hot water pipes pass through the vertical holes.

[0010] Beneficial effects of the utility model:

[0011] 1. Install the water distributor and circulation pump in the closed space formed by the top cover and the bottom box, then connect the stop valve to the gas outlet end of the inert gas storage tank. After opening the stop valve, the inert gas flows into the space formed by the top cover and the bottom box. After opening the exhaust valve, the inert gas mixed with air is discharged. After a period of time, close the stop valve and the exhaust valve, so that the space formed by the top cover and the bottom box is filled with inert gas, so that the bolts connecting the water distributor and the hot water pipe and the bolts connecting the circulation pump and the water supply pipeline are in an oxygen-deficient environment to prevent the bolts from oxidation and rust.

[0012] 2. When leakage occurs at the connection between the hot water pipe and the water distributor or at the connection between the circulation pump and the water supply pipeline due to sealing failure, the leaked hot water is concentrated in the space formed by the bottom box and the top cover, thereby preventing the leaked hot water from flowing freely. After opening the stop valve, it is easy to discharge the leaked hot water in the bottom box.

[0013] 3. As the amount of hot water collected in the space formed by the bottom box and the top cover increases, the air pressure in the space formed by the bottom box and the top cover increases. At this time, under the action of the pressure difference, the piston slides upward in the transparent cylinder, and the piston and the transparent cylinder work together to squeeze the spring, causing the spring to produce elastic deformation. By observing the position of the piston in the transparent cylinder, it is easy to judge whether there is water leakage in the space formed by the bottom box and the top cover. After opening the stop valve, the water in the bottom box is discharged, so that the piston moves to the bottom of the transparent cylinder under the action of the spring.

[0014] 4. A ring platform is connected and fixed on the upper surface of the top cover, and one end of the screw passes through the small hole on the connecting ring and is screwed into the screw hole on the ring platform to realize the assembly of the transparent tube and the top cover, and at the same time, the thickness of the top cover installation screw part is partially increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 This is a structural schematic diagram of a water circulation system of a boiler according to the utility model;

[0017] Figure 2 It is a schematic diagram of the assembly of a circulation pump, a water distributor and a bottom box in a water circulation system of a boiler of the utility model;

[0018] Figure 3 A three-dimensional diagram of a top cover in a water circulation system of a boiler according to the utility model;

[0019] Figure 4 It is a schematic diagram of the assembly of the ring platform and the top cover in the water circulation system of a boiler of the utility model;

[0020] Figure 5 It is a schematic diagram of the explosion structure of a spring, a piston and a transparent cylinder in a water circulation system of a boiler of the utility model;

[0021] In the figure: 1-bottom box, 2-stop valve, 3-exhaust valve, 4-top cover, 5-hot water pipe, 6-transparent cylinder, 7-screw, 8-connecting ring, 9-ring, 10-water pipe, 11-support plate, 12-sealing strip, 13-circulating pump, 14-lower support ear, 15-water distributor, 16-upper support ear, 17-round mouth, 18-vertical hole, 19-screw hole, 20-piston, 21-vent hole, 22-small hole, 23-spring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1-Figure 4The utility model provides a technical solution: a water circulation system of a boiler, comprising a water distributor 15, a water inlet end of the water distributor 15 is connected to a liquid outlet end of a circulation pump 13 through a connecting pipe, a water inlet end of the circulation pump 13 is bolted with a water pipe 10 for connecting to a hot water chamber of the boiler, the circulation pump 13 and the water distributor 15 are both installed in a bottom box 1, a detachable top cover 4 is installed at the upper end of the bottom box 1, the water pipe 10 passes through a side surface of the bottom box 1, a sealing strip 12 is installed between the top cover 4 and the bottom box 1, upper supporting ears 16 are connected and fixed on two parallel side surfaces of the top cover 4, a lower supporting ear 14 is provided on the lower side of the upper supporting ear 16, the lower supporting ear 14 is connected and fixed to the bottom box 1, after the upper supporting ear 16 is connected and fixed to the lower supporting ear 14 by a plurality of bolts, the assembly of the top cover 4 and the bottom box 1 is completed, and the sealing strip 12 improves the sealing performance of the connection portion between the bottom box 1 and the top cover 4.

[0024] See also Figure 1-Figure 4 , a plurality of hot water pipes 5 are equidistantly installed at the upper position of the outer surface of the water divider 15 by bolts, and the end of the hot water pipe 5 away from the water divider 15 passes through the top cover 4, wherein a plurality of vertical holes 18 are evenly opened on the upper surface of the top cover 4, so that the hot water pipe 5 passes through the vertical holes 18, and the assembly of the hot water pipe 5 and the top cover 4 is completed. A stop valve 2 is installed at the lower position of one side of the bottom box 1, and an exhaust valve 3 is installed at the upper position of one side of the bottom box 1. Two support plates 11 are connected and fixed to the bottom of the bottom box 1. The two support plates 11 are vertically arranged and symmetrically installed at the bottom of the bottom box 1. The two support plates 11 realize balanced support for the bottom box 1. The water divider 15 and the circulating pump 13 are installed in the closed space formed by the top cover 4 and the bottom box 1, and then the stop valve 2 is connected to the gas outlet end of the inert gas storage tank, and the bottom box 1 is opened. After the stop valve 2 is closed, the inert gas flows into the space formed by the top cover 4 and the bottom box 1. After the exhaust valve 3 is opened, the inert gas mixed with air is discharged. After a period of time, the stop valve 2 and the exhaust valve 3 are closed, so that the space formed by the top cover 4 and the bottom box 1 is filled with inert gas, so that the bolts connecting the water distributor 15 and the hot water pipe 5 and the bolts connecting the circulating pump 13 and the water pipeline are in an oxygen-deficient environment to prevent the bolts from oxidizing and rusting. When the connection between the hot water pipe 5 and the water distributor 15 or the connection between the circulating pump 13 and the water pipeline leaks due to sealing failure, the leaked hot water is concentrated and confined in the space formed by the bottom box 1 and the top cover 4, thereby preventing the leaked hot water from flowing freely. After the stop valve 2 is opened, it is convenient to discharge the leaked hot water in the bottom box 1.

[0025] See also Figure 1-Figure 5A vertically arranged circular opening 17 is provided on the upper surface of the top cover 4, a transparent cylinder 6 is provided on the upper side of the circular opening 17, the lower end of the transparent cylinder 6 is open, a ring platform 9 is provided on the upper side of the circular opening 17 and is concentrically arranged with the circular opening 17, the ring platform 9 is connected and fixed to the top cover 4, the inner diameter of the ring platform 9 is smaller than the diameter of the piston 20, a connecting ring 8 is connected and fixed to the lower end of the transparent cylinder 6, a plurality of small holes 22 are equidistantly provided on the upper surface of the connecting ring 8 in an annular shape, a plurality of screw holes 19 are equidistantly provided on the upper surface of the ring platform 9 in an annular shape, a screw 7 is inserted in the small hole 22, one end of the screw 7 is threadedly connected in the screw hole 19, a ring platform 9 is connected and fixed on the upper surface of the top cover 4, and one end of the screw 7 passes through the small hole 22 on the connecting ring 8 and is screwed into the screw hole 19 on the ring platform 9, so as to realize the assembly of the transparent cylinder 6 and the top cover 4, and at the same time, the thickness of the top cover 4 where the screw 7 is installed is partially increased.

[0026] See also Figure 1-Figure 5 A vent hole 21 is provided in the middle of the upper surface of the transparent cylinder 6, and a vertically arranged spring 23 is provided in the upper position of the transparent cylinder 6. A piston 20 is connected and fixed to the lower end of the spring 23. The piston 20 is slidably installed in the transparent cylinder 6. As the amount of hot water collected in the space formed by the bottom box 1 and the top cover 4 increases, the air pressure in the space formed by the bottom box 1 and the top cover 4 increases. At this time, under the action of the pressure difference, the piston 20 slides upward in the transparent cylinder 6. The piston 20 and the transparent cylinder 6 work together to squeeze the spring 23, causing the spring 23 to produce elastic deformation. By observing the position of the piston 20 in the transparent cylinder 6, it is convenient to judge whether there is water leakage in the space formed by the bottom box 1 and the top cover 4. After opening the stop valve 2, the water in the bottom box 1 is discharged, so that the piston 20 moves to the bottom of the transparent cylinder 6 under the action of the spring 23.

[0027] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water circulation system for a boiler, comprising a water distributor (15), characterized in that: The water inlet end of the water distributor (15) is connected to the liquid outlet end of the circulation pump (13) through a connecting pipe. The liquid inlet end of the circulation pump (13) is bolted with a water pipe (10) for connecting to the hot water chamber of the boiler. The circulation pump (13) and the water distributor (15) are both installed in a bottom box (1). A detachable top cover (4) is installed at the upper end of the bottom box (1). The water pipe (10) passes through a side surface of the bottom box (1). A plurality of hot water pipes (5) are equidistantly installed at the upper position of the outer surface of the water distributor (15) through bolts. The end of the hot water pipe (5) away from the water distributor (15) passes through the top cover (4). A stop valve (2) is installed at the lower position of a side surface of the bottom box (1). An exhaust valve (3) is installed at the upper position of a side surface of the bottom box (1). A detection component for detecting the air pressure in the space formed by the bottom box (1) and the top cover (4) is installed on the upper surface of the top cover (4).

2. The water circulation system of a boiler according to claim 1, characterized in that: The detection component comprises a transparent cylinder (6), a vertically arranged circular opening (17) is provided on the upper surface of the top cover (4), a transparent cylinder (6) is provided on the upper side of the circular opening (17), the lower end of the transparent cylinder (6) is open, the lower end of the transparent cylinder (6) is connected and fixed to the top cover (4) through a connecting piece, a vent hole (21) is provided at the middle position of the upper surface of the transparent cylinder (6), a vertically arranged spring (23) is provided at the upper position inside the transparent cylinder (6), a piston (20) is connected and fixed to the lower end of the spring (23), and the piston (20) is slidably installed in the transparent cylinder (6).

3. The water circulation system of a boiler according to claim 2, characterized in that: The connecting member comprises a ring platform (9), a ring platform (9) arranged concentrically with the circular opening (17) is provided on the upper side of the circular opening (17), the ring platform (9) is connected and fixed to the top cover (4), the inner diameter of the ring platform (9) is smaller than the diameter of the piston (20), a connecting ring (8) is connected and fixed to the lower end of the transparent cylinder (6), a plurality of small holes (22) are formed in an annular shape and equidistantly on the upper surface of the connecting ring (8), a plurality of screw holes (19) are formed in an annular shape and equidistantly on the upper surface of the ring platform (9), a screw (7) is inserted in the small hole (22), and one end of the screw (7) is threadedly connected in the screw hole (19).

4. The water circulation system of a boiler according to claim 1, characterized in that: A sealing strip (12) is installed between the top cover (4) and the bottom box (1); upper supporting ears (16) are connected and fixed on two parallel side surfaces of the top cover (4); a lower supporting ear (14) is provided on the lower side of the upper supporting ear (16); the lower supporting ear (14) is connected and fixed to the bottom box (1); and the upper supporting ear (16) is connected and fixed to the lower supporting ear (14) by a plurality of bolts.

5. The water circulation system of a boiler according to claim 1, characterized in that: Two support plates (11) are connected and fixed to the bottom of the bottom box (1), the two support plates (11) are arranged vertically and the two support plates (11) are symmetrically installed on the bottom of the bottom box (1).

6. The water circulation system of a boiler according to claim 1, characterized in that: A plurality of vertical holes (18) are evenly formed on the upper surface of the top cover (4), and the hot water pipe (5) passes through the vertical holes (18).

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