Three-return-stroke type waste heat boiler

Abstract

The utility model provides a three-return-stroke type waste heat boiler which comprises a machine body, a boiler body, a heat exchanger and a heat exchanger. The heat exchange assembly is arranged in the pot body and comprises two supports installed in the pot body, the side faces, close to each other, of the two supports are fixedly connected with annular shells, and a heat exchange structure is arranged between the two annular shells; according to the three-return-stroke type waste heat boiler, the machine body is arranged, gas can enter equipment, water can be stored through the boiler body, in the process that the gas flows in the heat exchange assembly, the heat exchange assembly is arranged in the machine body, and the heat exchange assembly is arranged in the machine body and comprises a machine box installed on the inner bottom wall of the machine body. Water in the pot body can be heated, then heat is recycled, the electromagnetic valve can be closed through the return stroke assembly when the gas temperature is high, the one-way valve is opened, high-temperature gas enters the heat exchange assembly again, and then the phenomenon that heat is not thoroughly utilized when the flue gas temperature is high is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat boilers, in particular to a three-pass waste heat boiler. Background Art

[0002] A waste heat boiler refers to a boiler that uses the waste heat in various industrial processes, waste materials or waste liquids, and the heat generated after the combustion of combustible substances therein to heat water to a certain working medium. When the waste heat boiler recovers the waste heat of petroleum waste gas, the waste heat boiler needs to be used.

[0003] Referring to the waste heat boiler with the publication number of CN112254540B, which includes a frame, a drum is arranged on the frame, heat exchange tubes are arranged in the drum, a plurality of smoke inlet pipes are arranged on the frame, and the plurality of smoke inlet pipes are respectively installed on the barrel walls at different positions of the drum; a plurality of barrier rings are axially spaced in the smoke inlet pipe, the outer diameter of the barrier ring is the same as the inner diameter of the smoke inlet pipe, and a retaining ring is arranged on the barrier ring, and the outer diameter of the retaining ring is the same as the inner diameter of the barrier ring. This application has the effect of reducing the dust adsorbed on the tube wall of the heat exchange tube.

[0004] Although the above solution can utilize waste heat during use, there are still some deficiencies during the use process. For example, it is difficult for the heat of the flue gas to return during the use process, resulting in incomplete utilization of the heat in the flue gas, so that the heating speed of the water inside the waste heat boiler by the flue gas is slow. Therefore, a three-pass waste heat boiler is proposed to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a three-pass waste heat boiler to solve the technical problems existing in the above background art.

[0006] The purpose and effect of a three-pass waste heat boiler of the utility model are achieved by the following specific technical means: A three-pass waste heat boiler includes a body, including: a pot body arranged above the body; a heat exchange assembly arranged inside the pot body, including two brackets installed inside the pot body, and annular shells are fixedly connected to one side surfaces of the two brackets close to each other, and a heat exchange structure is arranged between the two annular shells; a return assembly is arranged inside the body, including a chassis installed on the inner bottom wall of the body, a controller is fixedly connected to the right side surface of the chassis, and a return structure is arranged inside the chassis.

[0007] Preferably, an air inlet pipe is fixedly communicated with the left side surface of the body, an air outlet pipe is fixedly communicated with the right side surface of the body, a solenoid valve is fixedly communicated with the right side surface of the air outlet pipe, a sealing cover is fixedly connected to the inner wall of the body, and the left end of the air outlet pipe is fixedly communicated with the right side surface of the chassis.

[0008] Preferably, a water inlet connector is fixedly communicated with the left side surface of the pot body, and a water outlet connector is fixedly communicated with the right side surface of the pot body.

[0009] Preferably, two connecting seats are fixedly connected to the outer surface of the pot body, and the bottom surface of the connecting seat is fixedly connected to the upper surface of the machine body.

[0010] Preferably, the heat exchange structure of the heat exchange component includes a cylinder body installed on the right side surface of one of the brackets. A group of heat exchange tubes are fixedly communicated with the side surfaces of the two annular shells close to each other. A group of conduits are fixedly communicated with the outer surface of the cylinder body. One end of each conduit away from the cylinder body is fixedly communicated with the inner wall of one of the annular shells. The left end of the cylinder body is fixedly communicated with an air inlet connecting pipe, and the outer surface of the other annular shell is fixedly communicated with an elbow pipe.

[0011] Preferably, the bottom end of the air inlet connecting pipe penetrates through the machine body and is fixedly communicated with the upper surface of the sealing cover, and the bottom end of the elbow pipe penetrates through the machine body and is fixedly communicated with the upper surface of the chassis.

[0012] Preferably, the return structure of the return component includes a temperature sensor installed on the inner side wall of the chassis. A return pipe is fixedly communicated with the left side surface of the chassis. A one-way valve is fixedly communicated with the left end of the return pipe. An exhaust pipe is fixedly communicated with the left end of the one-way valve. The left end of the exhaust pipe is fixedly communicated with the right side surface of the sealing cover.

[0013] Preferably, two groups of support legs are arranged below the machine body, and the upper surface of each support leg is fixedly connected to the bottom surface of the machine body.

[0014] Beneficial effects:

[0015] 1. By providing the machine body, gas can enter the equipment, and the pot body can be used to store water. When the gas flows inside the heat exchange component, the water inside the pot body can be heated, thereby recovering heat. And the return component can close the solenoid valve and open the one-way valve when the gas temperature is high, so that the high-temperature gas enters the heat exchange component again, thus solving the problem of incomplete heat utilization when the flue gas temperature is high.

[0016] 2. By providing the cylinder body, the flue gas can be preliminarily heat-exchanged with water. And through the cooperation of the conduits and the heat exchange tubes, heat exchange can be carried out for the second time to improve the heat exchange efficiency. And the temperature sensor can sense the temperature of the flue gas, so that the controller can close the solenoid valve and open the one-way valve when the flue gas reaches the set temperature, so that the flue gas returns to the inside of the sealing cover and then enters the heat exchange component again, making the heat recovery more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the front sectional view of the present utility model.

[0019] Figure 3 This is a structural schematic diagram of the heat exchange component of the present utility model.

[0020] Figure 4 This is a structural schematic diagram of the return component of the present utility model.

[0021] Figures 1-4 In the figure, the corresponding relationship between the part names and the drawing numbers is as follows:

[0022] 1. Body; 101. Inlet pipe; 102. Outlet pipe; 103. Solenoid valve; 104. Sealing cover; 105. Support leg; 2. Pot body; 201. Connection seat; 202. Water inlet joint; 203. Water outlet joint; 3. Heat exchange component; 301. Bracket; 302. Annular shell; 303. Cylinder; 304. Heat exchange tube; 305. Duct; 306. Intake connection pipe; 307. Elbow; 4. Return component; 401. Chassis; 402. Controller; 403. Temperature sensor; 404. Return pipe; 405. Check valve; 406. Exhaust pipe. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The first embodiment

[0025] As shown in the attached Figure 1 to the attached Figure 4 As shown: A three-pass waste heat boiler includes a body 1, including: a pot body 2 disposed above the body 1; a heat exchange component 3 disposed inside the pot body 2, including two brackets 301 installed inside the pot body 2, and heat exchange structures are provided between the two brackets 301 on the side surfaces close to each other; a return component 4 disposed inside the body 1, including a chassis 401 installed on the inner bottom wall of the body 1, a controller 402 fixedly connected to the right side surface of the chassis 401, and a return structure is provided inside the chassis 401.

[0026] To facilitate the entry of flue gas into the equipment, as Figure 1 and Figure 2As shown in the figure, an intake pipe 101 is fixedly connected and communicated on the left side surface of the machine body 1, an exhaust pipe 102 is fixedly connected and communicated on the right side surface of the machine body 1, a solenoid valve 103 is fixedly connected and communicated on the right side surface of the exhaust pipe 102, a sealing cover 104 is fixedly connected to the inner wall of the machine body 1, the left end of the exhaust pipe 102 is fixedly connected and communicated with the right side surface of the chassis 401. By providing the intake pipe 101, a gas source can be connected, enabling gas to conveniently enter the equipment interior, and the solenoid valve 103 and the exhaust pipe 102 can control the discharge of flue gas.

[0027] As Figure 2 and Figure 4 shown, the return structure of the return component 4 includes a temperature sensor 403 installed on the inner side wall of the chassis 401. The left side surface of the chassis 401 is fixedly connected and communicated with a return pipe 404. The left end of the return pipe 404 is fixedly connected and communicated with a check valve 405. The left end of the check valve 405 is fixedly connected and communicated with an exhaust pipe 406. The left end of the exhaust pipe 406 is fixedly connected and communicated with the right side surface of the sealing cover 104. The temperature sensor 403 can sense the temperature of the heat-exchanged flue gas, and then cooperate with the controller 402 to control the check valve 405 and the solenoid valve 103 when the temperature is too high, enabling the flue gas to enter the interior of the sealing cover 104 and making the flue gas circulate.

[0028] As Figure 1 and Figure 1 shown, two support legs 105 are provided below the machine body 1. The upper surface of each support leg 105 is fixedly connected to the bottom surface of the machine body 1. The support legs 105 can reinforce the machine body 1 to prevent the machine body 1 from shaking during use.

[0029] Second Embodiment

[0030] As Figure 1 and Figure 2 shown, a water inlet joint 202 is fixedly connected and communicated on the left side surface of the pot body 2, and a water outlet joint 203 is fixedly connected and communicated on the right side surface of the pot body 2.

[0031] To prevent the pot body 2 from loosening during use, as Figure 1 and Figure 2 shown, two connecting seats 201 are fixedly connected to the outer surface of the pot body 2. The bottom surface of the connecting seat 201 is fixedly connected to the upper surface of the machine body 1. The connecting seats 201 can fix the pot body 2 to prevent the pot body 2 from loosening during use.

[0032] Third Embodiment

[0033] As Figure 2 and Figure 3As shown in the figure, the heat exchange structure of the heat exchange component 3 includes a cylinder body 303 installed on the right side surface of one of the brackets 301. One side surface of two annular shells 302 close to each other is fixedly communicated with a group of heat exchange tubes 304. A group of conduits 305 are fixedly communicated with the outer surface of the cylinder body 303. One end of each conduit 305 away from the cylinder body 303 is fixedly communicated with the inner wall of one of the annular shells 302. The left end of the cylinder body 303 is fixedly communicated with an air inlet connecting pipe 306, and a bent pipe 307 is fixedly communicated with the outer surface of the other annular shell 302.

[0034] The bottom end of the air inlet connecting pipe 306 penetrates through the machine body 1 and is fixedly communicated with the upper surface of the sealing cover 104. The bottom end of the bent pipe 307 penetrates through the machine body 1 and is fixedly communicated with the upper surface of the chassis 401. Through the air inlet connecting pipe 306, the flue gas can enter the interior of the heat exchange component 3, and in cooperation with the bent pipe 307, the flue gas can be discharged into the return component 4.

[0035] Working principle: When in use, the flue gas enters the interior of the sealing cover 104 through the air inlet pipe 101. As the flue gas enters, the flue gas can enter the cylinder body 303 through the air inlet connecting pipe 306 and flow inside the cylinder body 303, thereby performing preliminary heat exchange. And through the conduits 305 and the heat exchange tubes 304, heat exchange can be performed again, so as to heat the water inside the pot body 2 and utilize the waste heat of the flue gas. Then the flue gas is discharged into the interior of the chassis 401 through the bent pipe 307. The temperature sensor 403 is used to sense the temperature of the flue gas. When the temperature is relatively high, the controller 402 can close the solenoid valve 103 and at the same time open the one-way valve 405, so that the flue gas enters the interior of the sealing cover 104 again, and the flue gas is returned, ensuring the full utilization of the waste heat of the flue gas.

Claims

1. A three-pass waste heat boiler, comprising a body (1), characterized in that: include: A pot body (2) is arranged above the machine body (1); A heat exchange assembly (3) is arranged inside the pot body (2), comprising two brackets (301) installed inside the pot body (2), the two brackets (301) are fixedly connected to an annular shell (302) on one side close to each other, and a heat exchange structure is arranged between the two annular shells (302); The return component (4) is arranged inside the body (1), and comprises a chassis (401) installed on the inner bottom wall of the body (1), the right side of the chassis (401) is fixedly connected to a controller (402), and a return structure is arranged inside the chassis (401).

2. The three-pass waste heat boiler according to claim 1 is characterized in that: The left side of the machine body (1) is fixedly connected to an air inlet pipe (101), the right side of the machine body (1) is fixedly connected to an air outlet pipe (102), the right side of the air outlet pipe (102) is fixedly connected to a solenoid valve (103), the inner wall of the machine body (1) is fixedly connected to a sealing cover (104), and the left end of the air outlet pipe (102) is fixedly connected to the right side of the chassis (401).

3. The three-pass waste heat boiler according to claim 1 is characterized in that: The left side of the pot body (2) is fixedly connected to a water inlet joint (202), and the right side of the pot body (2) is fixedly connected to a water outlet joint (203).

4. The three-pass waste heat boiler according to claim 1, characterized in that: Two connection seats (201) are fixedly connected to the outer surface of the pot body (2), and the bottom surface of the connection seat (201) is fixedly connected to the upper surface of the machine body (1).

5. The three-pass waste heat boiler according to claim 1, characterized in that: The heat exchange structure of the heat exchange assembly (3) comprises a cylinder (303) installed on the right side of one of the brackets (301); a group of heat exchange tubes (304) are fixedly connected to the side surfaces of the two annular shells (302) close to each other; a group of conduits (305) are fixedly connected to the outer surface of the cylinder (303); one end of each conduit (305) away from the cylinder (303) is fixedly connected to the inner wall of one of the annular shells (302); the left end of the cylinder (303) is fixedly connected to an air intake connecting pipe (306); and the outer surface of the other annular shell (302) is fixedly connected to a bent pipe (307).

6. The three-pass waste heat boiler according to claim 5, characterized in that: The bottom end of the air intake connecting pipe (306) passes through the machine body (1) and is fixedly connected to the upper surface of the sealing cover (104), and the bottom end of the bent pipe (307) passes through the machine body (1) and is fixedly connected to the upper surface of the chassis (401).

7. The three-pass waste heat boiler according to claim 1, characterized in that: The return structure of the return assembly (4) comprises a temperature sensor (403) installed on the inner wall of the chassis (401); the left side of the chassis (401) is fixedly connected to a return pipe (404); the left end of the return pipe (404) is fixedly connected to a one-way valve (405); the left end of the one-way valve (405) is fixedly connected to an exhaust pipe (406); the left end of the exhaust pipe (406) is fixedly connected to the right side of the sealing cover (104).

8. The three-pass waste heat boiler according to claim 1, characterized in that: Two groups of supporting legs (105) are provided below the machine body (1), and the upper surface of each supporting leg (105) is fixedly connected to the bottom surface of the machine body (1).

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