Cooling water circulation system for biomass steam boiler

Abstract

The utility model discloses a cooling water circulation system for a biomass steam boiler, which belongs to the technical field of cooling water circulation, and comprises a support table, the left side of the top of the support table is fixedly connected with a steam boiler body, and the inner wall of the steam boiler body is fixedly connected with a circulation mechanism. A pre-cooling mechanism is fixedly connected to the rear side of the top of the supporting table, a circulating mechanism can effectively absorb heat in the boiler, cooling of key parts of the boiler is guaranteed, cooling pipes are arranged on the inner wall of the boiler and can make contact with the area needing to be cooled in a large area, heat is transferred to water in the pipes, local overheating of the boiler is prevented, and the service life of the boiler is prolonged. Normal operation and safety of the boiler are guaranteed, the pre-cooling mechanism receives hot water discharged from the steam boiler, and the hot water is prevented from directly entering the cooling tower, so that the load of the cooling tower is reduced, the hot water is changed into small liquid drops, the contact area of the hot water and a cooling medium is increased, heat dissipation is accelerated, and the pre-cooling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooling water circulation technical field, especially relates to cooling water circulation system for biomass steam boiler. BACKGROUND

[0002] When the biomass steam boiler is running, the high temperature produced by the combustion in the hearth can make the temperature of the water cooled wall and other heating surfaces sharply rise, if there is no effective cooling, the heating surface can be deformed, broken and damaged due to overheating, which affects the normal operation and service life of the boiler, the cooling water circulation system can control the temperature of the heating surface in the safe range by continuously circulating cooling water and taking away the heat of the heating surface, and the safe operation of the boiler is ensured.

[0003] In view of the above problems, the existing patent provides a solution, but the existing cooling water circulation system lacks the structure for pre-cooling hot water, which leads to the temperature of hot water being too high when entering the cooling tower, the load of the cooling tower is too large, more energy and longer time are needed to realize the cooling effect, thereby reducing the efficiency of the whole cooling water circulation system.

[0004] Therefore, the cooling water circulation system for biomass steam boiler is provided. UTILITY MODEL CONTENTS

[0005] The utility model discloses a cooling water circulation system for biomass steam boiler can solve the problem that the existing cooling water circulation system lacks the structure for pre-cooling hot water, which leads to the temperature of hot water being too high when entering the cooling tower, the load of the cooling tower is too large, more energy and longer time are needed to realize the cooling effect, thereby reducing the efficiency of the whole cooling water circulation system.

[0006] To achieve the above object, the utility model provides the following technical scheme: cooling water circulation system for biomass steam boiler, including support platform, the left side of support platform top is fixedly connected with steam boiler body, the inner wall of steam boiler body is fixedly connected with circulation mechanism, the rear side of support platform top is fixedly connected with precooling mechanism;

[0007] The pre-cooling mechanism comprises a cooling box, a pressurizing pump, a guide pipe, a connecting plate, a plurality of spray heads, a heat conduction box, a paraffin block, a drain pipe and a plurality of air exhaust holes, the cooling box is fixedly connected to the rear side of the top of the support table, the pressurizing pump is fixedly connected to the top of the cooling box, the guide pipe is fixedly connected to the right side of the pressurizing pump, the left side of the pressurizing pump is fixedly connected to the right side of the circulating mechanism, the side, away from the pressurizing pump, of the guide pipe is fixedly connected to the top of the connecting plate through the top of the cooling box, the connecting plate is fixedly connected to the top of the inner side of the cooling box, the spray heads are fixedly connected to the bottom of the connecting plate, the heat conduction box is fixedly connected to the bottom of the inner side of the cooling box, the paraffin block is filled in the inner side of the heat conduction box, the drain pipe is fixedly connected to the right side of the heat conduction box, the drain pipe is fixedly connected to the bottom of the left side of the circulating mechanism through the cooling box, and the air exhaust holes are formed in the top of the cooling box.

[0008] Preferably, the circulating mechanism comprises a cooling pipe, a water inlet pipe, a one-way valve, a connecting pipe, a water outlet pipe, a cooling tower, a water adding pipe, a water pumping pipe and a circulating pump, and the cooling pipe is fixedly connected to the inner wall of the steam boiler body.

[0009] Preferably, the water inlet pipe is fixedly connected to the top of the right side of the cooling pipe, the one-way valve is fixedly connected to the right side of the water inlet pipe, the connecting pipe is fixedly connected to the right side of the one-way valve, the water outlet pipe is fixedly connected to the bottom of the left side of the cooling pipe, the right side of the water outlet pipe is fixedly connected to the left side of the pre-cooling mechanism, the cooling tower is fixedly connected to the right side of the top of the support table, and the rear side of the left side of the cooling tower is fixedly connected to the right side of the drain pipe.

[0010] Preferably, the water adding pipe is fixedly connected to the left side of the bottom of the cooling tower, the water pumping pipe is fixedly connected to the left side of the bottom of the cooling tower, the circulating pump is fixedly connected to the top of the support table, the right side of the circulating pump is fixedly connected to the left side of the water pumping pipe, and the left side of the circulating pump is fixedly connected to the bottom of the connecting pipe.

[0011] Preferably, the bottom of the connecting pipe is fixedly connected with a sealing ring, and the side, away from the connecting pipe, of the sealing ring is fixedly connected to the left side of the circulating pump.

[0012] Preferably, the bottom of the cooling tower is fixedly connected with a support frame, and the surface of the support frame is coated with anticorrosive paint.

[0013] Preferably, the bottom of the circulating pump is fixedly connected with a reinforcing seat, and the surface of the reinforcing seat is coated with anticorrosive paint.

[0014] Preferably, the inner side of the air exhaust hole is fixedly connected with a dustproof filter screen, and the surface of the dustproof filter screen is coated with anticorrosive paint.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1、The circulation mechanism of the application can effectively absorb the heat inside the boiler, ensure the cooling of the key parts of the boiler, and prevent the local overheating of the boiler by arranging the cooling pipes on the inner wall of the boiler, which can contact with the area needing cooling in a large area, transfer the heat to the water in the pipe, and protect the normal operation and safety of the boiler;

[0017] 2、The pre-cooling mechanism of the application receives the hot water discharged from the steam boiler, avoids the hot water directly entering the cooling tower, thereby reducing the load of the cooling tower, and making the hot water into small droplets, increasing the contact area of the hot water and the cooling medium, accelerating the heat dissipation, improving the efficiency of the pre-cooling, and when the hot water is in the cooling box, the heat can be transferred to the paraffin block by conduction, and the paraffin block absorbs heat and changes from solid to liquid, thereby absorbing a large amount of heat and realizing the pre-cooling of the hot water. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structural diagram of the cooling water circulation system for the biomass steam boiler of the utility model;

[0019] Figure 2 It is the structural schematic view of the paraffin block of the utility model;

[0020] Figure 3 It is the overall structural diagram of the cooling water circulation system for the biomass steam boiler of the utility model; Figure 2 It is the enlarged schematic view of the position A of the utility model;

[0021] Figure 4 It is the structural schematic view of the cooling tower of the utility model;

[0022] Figure 5 It is the enlarged schematic view of the position B of the utility model. Figure 4

[0023] In the drawing, 1, support table; 2, circulation mechanism; 21, cooling pipe; 22, water inlet pipe; 23, check valve; 24, connecting pipe; 25, water outlet pipe; 26, cooling tower; 27, water adding pipe; 28, water pumping pipe; 29, circulating pump; 3, pre-cooling mechanism; 31, cooling box; 32, pressure pump; 33, guide pipe; 34, connecting plate; 35, spray head; 36, heat conduction box; 37, paraffin block; 38, drain pipe; 39, exhaust hole; 4, sealing ring; 5, support frame; 6, reinforcing seat; 7, steam boiler body; 8, dust filter screen. DETAILED DESCRIPTION

[0024] ​Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those ordinarily skilled in the art without creative work fall within the scope of the present application.

[0025] Please refer to Figures 1-5 The present application provides technical solutions:

[0026] The cooling water circulating system for the biomass steam boiler comprises a supporting table 1, a steam boiler body 7 fixedly connected to the left side of the top of the supporting table 1, a circulating mechanism 2 fixedly connected to the inner wall of the steam boiler body 7, and a pre-cooling mechanism 3 fixedly connected to the rear side of the top of the supporting table 1.

[0027] The pre-cooling mechanism 3 comprises a cooling box 31, a pressurizing pump 32, a guide pipe 33, a connecting plate 34, a plurality of spray heads 35, a heat conduction box 36, a paraffin block 37, a drain pipe 38 and a plurality of exhaust holes 39. The cooling box 31 is fixedly connected to the rear side of the top of the supporting table 1. The pressurizing pump 32 is fixedly connected to the top of the cooling box 31. The guide pipe 33 is fixedly connected to the right side of the pressurizing pump 32. The left side of the pressurizing pump 32 is fixedly connected to the right side of the circulating mechanism 2. The side, away from the pressurizing pump 32, of the guide pipe 33 penetrates through the top of the cooling box 31 and is fixedly connected to the top of the connecting plate 34. The connecting plate 34 is fixedly connected to the top of the inner side of the cooling box 31. The spray heads 35 are fixedly connected to the bottom of the connecting plate 34. The heat conduction box 36 is fixedly connected to the bottom of the inner side of the cooling box 31. The paraffin block 37 is filled in the inner side of the heat conduction box 36. The drain pipe 38 is fixedly connected to the right side of the heat conduction box 36. The drain pipe 38 penetrates through the cooling box 31 and is fixedly connected to the bottom of the left side of the circulating mechanism 2. The exhaust holes 39 are arranged on the top of the cooling box 31.

[0028] In this embodiment: by setting the support table 1 can support and limit the circulation mechanism 2, the steam boiler body 7 and the pre-cooling mechanism 3, the steam boiler body 7 generates heat energy by burning biomass fuel, converts water into steam, provides the required steam for industrial production or other applications, the cooling box 31 provides a relatively closed space for the pre-cooling of hot water, ensures that the pre-cooling process is carried out in a controllable environment, the pressure pump 32 can apply a certain pressure to the hot water, so that the hot water can be sprayed out at a high speed and pressure through the nozzle 35 after entering the cooling box 31, forming a more dispersed water flow, the guide pipe 33 guides the hot water pressurized by the pressure pump 32 to the connecting plate 34, the connecting plate 34 provides a stable connection position for the nozzle 35, the nozzle 35 disperses the hot water delivered from the guide pipe 33 into fine droplets and sprays them onto the top of the heat conduction box 36, the top of the heat conduction box 36 is provided with a water storage tank to limit the hot water, at the same time, the inside of the heat conduction box 36 is filled with paraffin blocks 37, which quickly pre-cool the hot water by transferring heat to the paraffin blocks 37, the paraffin blocks 37 absorb heat and change phase, absorbing a large amount of heat to pre-cool the hot water, the drain pipe 38 discharges the pre-cooled water from the heat conduction box 36 and guides the pre-cooled hot water to the inside of the cooling tower 26, the exhaust hole 39 is used to exhaust the hot gas and water vapor generated in the cooling box 31 to balance the pressure in the cooling box 31.

[0029] Specifically, as shown in Figure 4 、 Figure 5 , the circulation mechanism 2 includes a cooling pipe 21, an inlet pipe 22, a one-way valve 23, a connecting pipe 24, an outlet pipe 25, a cooling tower 26, a water inlet pipe 27, a water pump 28 and a circulating pump 29, and the cooling pipe 21 is fixedly connected to the inner wall of the steam boiler body 7.

[0030] Specifically, as shown in Figure 4 、 Figure 5 , the inlet pipe 22 is fixedly connected to the top right side of the cooling pipe 21, the one-way valve 23 is fixedly connected to the right side of the inlet pipe 22, the connecting pipe 24 is fixedly connected to the right side of the one-way valve 23, the outlet pipe 25 is fixedly connected to the bottom left side of the cooling pipe 21, the right side of the outlet pipe 25 is fixedly connected to the left side of the pre-cooling mechanism 3, the cooling tower 26 is fixedly connected to the right side of the top of the support table 1, and the left side of the cooling tower 26 is fixedly connected to the right side of the drain pipe 38.

[0031] Specifically, as shown in Figure 4 、 Figure 5 , the water inlet pipe 27 is fixedly connected to the left side of the bottom of the cooling tower 26, the water pump 28 is fixedly connected to the left side of the bottom of the cooling tower 26, the circulating pump 29 is fixedly connected to the top of the support table 1, the right side of the circulating pump 29 is fixedly connected to the left side of the water pump 28, and the left side of the circulating pump 29 is fixedly connected to the bottom of the connecting pipe 24.

[0032] In this embodiment: by setting the cooling pipe 21 directly in contact with the high temperature area inside the boiler, the water flowing through the pipe carries away the heat generated by the boiler, the inlet pipe 22 introduces the cooling water transported from the circulating pump 29 into the cooling pipe 21, ensuring that there is enough cooling water in the cooling pipe 21 to absorb heat, the one-way valve 23 ensures that the cooling water enters the cooling pipe 21 from the inlet pipe 22, avoiding the phenomenon of reverse flow of water, the connecting pipe 24 connects the one-way valve 23 and the circulating pump 29, so that the circulating pump 29 guides the cooled water to the inlet pipe 22, the outlet pipe 25 discharges the hot water that has absorbed the heat of the boiler from the cooling pipe 21 to the pre-cooling mechanism 3 for pre-cooling treatment, the cooling tower 26 dissipates the heat in the hot water discharged from the pre-cooling mechanism 3 to the atmosphere through heat exchange with the outside air, so that the temperature of the water is reduced to an appropriate range for re-use in the cycle, the water supply pipe 27 provides a water supply channel for the cooling tower 26, when the water in the cooling tower 26 is reduced due to evaporation and other reasons, new water can be supplied through the water supply pipe 27 to ensure that there is enough water in the cooling tower 26 for heat exchange, the water suction pipe 28 provides a channel for the circulating pump 29 to extract cooling water from the cooling tower 26, the circulating pump 29 ensures the circulation of water, by continuously sending cooled water back to the cooling pipe 21, it realizes the continuous cooling of the boiler, and ensures the stable operation of the entire cooling water circulation system.

[0033] Specifically, as shown in Figure 1 , the bottom of the connecting pipe 24 is fixedly connected with a sealing ring 4, and the side of the sealing ring 4 away from the connecting pipe 24 is fixedly connected to the left side of the circulating pump 29.

[0034] Specifically, as shown in Figure 1 , the bottom of the cooling tower 26 is fixedly connected with a support frame 5, and the surface of the support frame 5 is coated with anticorrosive paint.

[0035] In this embodiment: by setting the sealing ring 4, the leakage of cooling water during circulation is prevented, by setting the support frame 5, stable support can be provided for the cooling tower 26, and by setting the anticorrosive paint, corrosion caused by long-term contact of the cooling tower 26 with water and humid air can be effectively resisted.

[0036] Specifically, as shown in Figure 1 , the bottom of the circulating pump 29 is fixedly connected with a reinforcing seat 6, and the surface of the reinforcing seat 6 is coated with anticorrosive paint.

[0037] Specifically, as shown in Figure 3 , the inner side of the exhaust hole 39 is fixedly connected with a dust filter screen 8, and the surface of the dust filter screen 8 is coated with anticorrosive paint.

[0038] In the embodiment, the reinforcing seat 6 is arranged to reinforce the circulating pump 29, thereby enhancing the stability of the circulating pump 29; the anticorrosive coating is arranged to prevent the reinforcing seat 6 from being damaged by the humid environment or the cooling water, thereby ensuring that the reinforcing seat 6 can continuously provide reliable support for the circulating pump 29; the dust filter screen 8 is arranged to effectively prevent dust and impurities from entering the cooling box 31; and the anticorrosive coating is arranged to improve the corrosion resistance of the reinforcing seat 6 in the humid and high-temperature environment, thereby prolonging the service life.

[0039] Working principle: First, the user will support the table 1 to the predetermined working position, then, the user will connect the water supply pipe of the external water source with the water inlet pipe 27, make the cooling water flow into the inside of the cooling tower 26, after completing the water adding step, the user starts the cooling tower 26, circulating pump 29, steam boiler body 7 and pressurizing pump 32 in turn, when the steam boiler body 7 starts, the internal biomass fuel begins to burn fully, releases a large amount of heat energy, makes the temperature inside the boiler rise rapidly, at the same time, the circulating pump 29 draws out the cooling water with lower temperature through the water suction pipe 28, the cooling water flows quickly along the connecting pipe 24, and finally is transported to the water inlet pipe 22, at this time, the user manually opens the check valve 23, after the cooling water passes through the check valve 23, it flows into the inside of the cooling pipe 21 along the guide of the water inlet pipe 22, when the cooling water flows in the cooling pipe 21, it constantly absorbs the heat generated by the steam boiler body 7, thereby effectively cooling the cooling pipe 21, as the cooling water continuously absorbs heat in the cooling pipe 21, the originally low-temperature cooling water gradually warms up and becomes hot water, the hot water flows to the water outlet pipe 25 along the pipeline of the cooling pipe 21, when the hot water reaches the water outlet pipe 25, it is transported to the pressurizing pump 32 under the guidance of the pipeline, the pressurizing pump 32 applies strong pressure to the flowing hot water, so that it has higher energy and flow rate, the pressurized hot water quickly flows to the spray head 35 along the guide pipe 33, the spray head 35 uniformly disperses the high-speed flowing hot water into countless tiny droplets and sprays them into the water storage tank on the top of the heat conduction box 36, the heat conduction box 36 rapidly absorbs the heat of the hot water sprayed in the water storage tank and can quickly conduct the absorbed heat to the paraffin block 37 filled in its inside, after absorbing enough heat, the paraffin block 37 changes from solid to liquid and forms paraffin liquid, in this process, the paraffin block 37 absorbs a large amount of heat and thus pre-cools the hot water, the pre-cooled hot water has a significant temperature drop, under the action of gravity, the hot water is guided to the inside of the cooling tower 26 through the drain pipe 38, the cooling tower 26 uses the heat exchange principle between air and water to dissipate the heat in the hot water to the surrounding atmosphere, in the cooling tower 26, the hot water is in full contact with the air, the heat is constantly transferred from the hot water to the air, so that the temperature of the hot water is further reduced and returns to the temperature range suitable for reuse, then, the cooled water enters the circulation system again and starts a new round of cooling for the steam boiler under the drive of the circulating pump 29, finally, when the steam boiler completes the current work task, the user closes the pressurizing pump 32, circulating pump 29, cooling tower 26 and steam boiler body 7, after stopping running, as the ambient temperature gradually changes, the temperature of the environment where the paraffin block 37 is located also gradually recovers, at this time, the paraffin block 37 discharges the heat stored in the heat absorption process in the form of hot gas through the exhaust hole 39 on the top of the cooling box 31, as the heat dissipates,The paraffin block 37 gradually undergoes phase transition again from liquid to solid to re-form the paraffin block 37, and fully prepares for the next pre-cooling work, so as to be put into the pre-cooling task of hot water when the steam boiler is operated again.

[0040] The above only is the preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. Cooling water circulation system for a biomass steam boiler, comprising a support table (1), characterized in that: The left side of the top of the support table (1) is fixedly connected with a steam boiler body (7), the inner wall of the steam boiler body (7) is fixedly connected with a circulating mechanism (2), and the rear side of the top of the support table (1) is fixedly connected with a pre-cooling mechanism (3). The pre-cooling mechanism (3) comprises a cooling box (31), a pressurizing pump (32), a guide pipe (33), a connecting plate (34), a plurality of spray heads (35), a heat conduction box (36), a paraffin block (37), a drain pipe (38) and a plurality of exhaust holes (39), the cooling box (31) is fixedly connected to the rear side of the top of the support table (1), the pressurizing pump (32) is fixedly connected to the top of the cooling box (31), the guide pipe (33) is fixedly connected to the right side of the pressurizing pump (32), the left side of the pressurizing pump (32) is fixedly connected to the right side of the circulating mechanism (2), the side, away from the pressurizing pump (32), of the guide pipe (33) penetrates through the top of the cooling box (31) and is fixedly connected to the top of the connecting plate (34), the connecting plate (34) is fixedly connected to the top of the inner side of the cooling box (31), the spray heads (35) are fixedly connected to the bottom of the connecting plate (34), the heat conduction box (36) is fixedly connected to the bottom of the inner side of the cooling box (31), the paraffin block (37) is filled in the inner side of the heat conduction box (36), the drain pipe (38) is fixedly connected to the right side of the heat conduction box (36), the drain pipe (38) penetrates through the cooling box (31) and is fixedly connected to the bottom of the left side of the circulating mechanism (2), and the exhaust holes (39) are formed in the top of the cooling box (31).

2. The cooling water circulation system for a biomass steam boiler according to claim 1, characterized by: The circulating mechanism (2) comprises a cooling pipe (21), a water inlet pipe (22), a one-way valve (23), a connecting pipe (24), a water outlet pipe (25), a cooling tower (26), a water adding pipe (27), a water pumping pipe (28) and a circulating pump (29), and the cooling pipe (21) is fixedly connected to the inner wall of the steam boiler body (7).

3. The cooling water circulation system for a biomass steam boiler according to claim 2, characterized by: The water inlet pipe (22) is fixedly connected to the top of the right side of the cooling pipe (21), the one-way valve (23) is fixedly connected to the right side of the water inlet pipe (22), the connecting pipe (24) is fixedly connected to the right side of the one-way valve (23), the water outlet pipe (25) is fixedly connected to the bottom of the left side of the cooling pipe (21), the right side of the water outlet pipe (25) is fixedly connected to the left side of the pre-cooling mechanism (3), the cooling tower (26) is fixedly connected to the right side of the top of the support table (1), and the rear side of the left side of the cooling tower (26) is fixedly connected to the right side of the drain pipe (38).

4. The cooling water circulation system for a biomass steam boiler according to claim 2, characterized by: The water adding pipe (27) is fixedly connected to the left side of the bottom of the cooling tower (26), the water pumping pipe (28) is fixedly connected to the left side of the bottom of the cooling tower (26), the circulating pump (29) is fixedly connected to the top of the support table (1), the right side of the circulating pump (29) is fixedly connected to the left side of the water pumping pipe (28), and the left side of the circulating pump (29) is fixedly connected to the bottom of the connecting pipe (24).

5. The cooling water circulation system for a biomass steam boiler according to claim 2, characterized by: A sealing ring (4) is fixedly connected to the bottom of the connecting pipe (24), and the side, away from the connecting pipe (24), of the sealing ring (4) is fixedly connected to the left side of the circulating pump (29).

6. The cooling water circulation system for a biomass steam boiler according to claim 2, characterized by: The bottom of the cooling tower (26) is fixedly connected with a support frame (5), the surface of the support frame (5) is coated with anticorrosive paint.

7. The cooling water circulation system for a biomass steam boiler according to claim 2, characterized by: The bottom of the circulating pump (29) is fixedly connected with a reinforcing seat (6), the surface of the reinforcing seat (6) is coated with anticorrosive paint.

8. The cooling water circulation system for a biomass steam boiler according to claim 1, characterized by: The inner side of the exhaust hole (39) is fixedly connected with a dust filter screen (8), the surface of the dust filter screen (8) is coated with anticorrosive paint.

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