A preheating steam generator

Abstract

This utility model discloses a preheating steam generator, including a tank, a combustion cylinder fixedly connected to the inner wall of the tank, a connecting pipe connected to the upper side of one side of the tank, and a preheating device installed above the tank. The preheating device includes: a water tank fixedly connected to the top of the tank; and a heat exchange pipe passing through the top side of the water tank, with its end passing through the top of the tank. This utility model relates to the field of steam generator technology. This preheating steam generator, through the cooperation of the tank, preheating device, and combustion device, can recover and utilize the heat from the exhaust gas during combustion heating, i.e., it can preheat the prepared water, reducing subsequent heating time, improving overall work efficiency, increasing energy utilization, and effectively reducing the temperature of the surrounding working environment, thus improving the comfort of the workers.

Description

Technical Field

[0001] This utility model relates to the field of steam generator technology, specifically a preheating steam generator. Background Technology

[0002] A steam generator is a mechanical device that heats water and consumes fuel and other energy to produce steam. It is generally classified into electric steam generators, gas-fired steam generators, fuel-fired steam generators, and biomass steam generators. For example, a publicly available document states: "202020055977.4 A combustion-type steam generator includes: a combustion chamber, a heating chamber, a water inlet pipe, a steam exhaust pipe, an air inlet pipe, a flue pipe, a ring pipe, and an explosion-proof device; the heating chamber is located inside the combustion chamber, one end of the water inlet pipe is connected to the heating chamber, a steam exhaust port is opened at the top of the heating chamber, a first perforation is opened at the top of the combustion chamber, one end of the steam exhaust pipe passes through the first perforation and the steam exhaust port, and the other end of the steam exhaust pipe protrudes outside the combustion chamber; a flue pipe is opened at the top of the combustion chamber, the other end of the ring pipe protrudes outside the combustion chamber, and the explosion-proof device is located outside the combustion chamber, with one end of the explosion-proof device fastened to the other end of the ring pipe. This utility model has the effect of improving the impact resistance of the combustion chamber and increasing the service life of the combustion-type steam generator."

[0003] Existing steam generators still contain a large amount of heat in the exhaust gas after combustion, and the heat in the exhaust gas cannot be well recovered and utilized, resulting in significant energy waste. They also increase the temperature of the surrounding working environment and affect the comfort of the workers, thus causing inconvenience to the workers. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a preheating steam generator, which solves the problem that existing steam generators still contain a large amount of heat in the exhaust gas after combustion, and the heat in the exhaust gas cannot be well recovered and utilized, resulting in significant energy waste. Furthermore, it increases the temperature of the surrounding working environment and affects the comfort of the workers, thus causing inconvenience to the workers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a preheating steam generator, comprising a tank, a combustion cylinder fixedly connected to the inner wall of the tank, a connecting pipe connected to the upper side of one side of the tank, and a preheating device disposed above the tank. The preheating device comprises: a water tank fixedly connected to the top of the tank; a heat exchange pipe extending through one side of the top of the water tank and extending through the top of the tank; multiple heat exchange plates, all fixedly connected to the inner wall of the heat exchange pipe; and a water inlet connected to one side of the top of the water tank. The flue gas after combustion can enter the interior of the water tank through the heat exchange pipe, so as to exchange heat with the water inside the tank through the heat exchange plates.

[0006] Preferably, an isolation ring is fixedly connected to the bottom of the inner wall of the tank, and a combustion device is provided below the tank. The combustion device includes: a gas delivery pipe that passes through the lower side of the tank and extends to the lower interior of the combustion cylinder, the outer wall of the gas delivery pipe being fixedly connected to the inner wall of the isolation ring and the bottom of the inner wall of the tank; a burner head connected to the end of the gas delivery pipe; an igniter fixedly connected to the lower interior of the combustion cylinder; multiple heat-conducting plates, all fixedly connected to the inner wall of the combustion cylinder; and a gas supply device located on the lower side of the inner side of the tank. External combustion gas is delivered to the lower interior of the combustion cylinder through the gas delivery pipe and the burner head, and the gas supply device delivers external air to the lower interior of the combustion cylinder.

[0007] Preferably, the air supply device includes: a filter screen, which is fixedly connected to the lower side of one side of the tank body by bolts; a blower, which is fixedly connected to the bottom side of the inner wall of the tank body; an air guide pipe, which is connected to the output end of the blower and whose outer wall is fixedly connected to the inner wall of the isolation ring cylinder; and an annular nozzle, which is connected to the end of the air guide pipe and fixedly connected to the lower inner wall of the combustion cylinder; wherein, the blower delivers the air filtered by the filter screen to the lower interior of the combustion cylinder through the air guide pipe and the annular nozzle.

[0008] Preferably, the inner wall of the tank, the inner wall of the combustion cylinder, and the outer wall of the isolation ring are all fixedly connected to heat insulation plates. A controller is fixedly connected to one side of the bottom of the inner wall of the tank, and a high-temperature resistant water level sensor is fixedly connected to one side of the heat insulation plate. The controller is electrically connected to the high-temperature resistant water level sensor.

[0009] Preferably, a water replenishment device is provided on one side of the upper part of the tank. The water replenishment device includes: a servo motor, fixedly connected to the top side of the water tank and electrically connected to a controller; a drive rod, fixedly connected to the output end of the servo motor and rotatably connected to the top side of the water tank through a sealed bearing; a sealing plate, fixedly connected to the bottom of the drive rod, with its bottom fitting against the top side of the tank; and a sealing gasket, fixedly connected to the bottom of the sealing plate, with its bottom fitting against the top of the tank. The servo motor drives the sealing plate to move through the drive rod. When the opening of the sealing plate coincides with the opening at the top of the tank, water can be replenished; when they are misaligned, the tank can be closed.

[0010] Beneficial effects

[0011] This utility model provides a preheating steam generator. It has the following beneficial effects: Through the cooperation of the tank, preheating device, and combustion device, this preheating steam generator can recover and utilize the heat from the exhaust gas during combustion heating, thus preheating the prepared water, reducing subsequent heating time, improving overall work efficiency, increasing energy utilization, and effectively reducing the temperature of the surrounding working environment, thereby improving the comfort of the workers.

[0012] By combining a water level sensor, controller, and water replenishment device, water can be automatically replenished when the water level inside the tank is insufficient, thus preventing dry burning and ensuring the safe use of the equipment and operational safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 A sectional view;

[0015] Figure 3 for Figure 1 Top view;

[0016] Figure 4 for Figure 2 A schematic diagram of the structure of the tank body, heat insulation plate, and sealing plate.

[0017] In the diagram: 1. Tank; 2. Preheating device; 21. Water tank; 22. Heat exchange tube; 23. Heat exchange plate; 24. Water inlet; 3. Combustion device; 31. Gas delivery pipe; 32. Burner head; 33. Ignition device; 34. Heat conduction plate; 35. Gas supply device; 351. Annular nozzle; 352. Gas guide pipe; 353. Fan; 354. Filter screen; 4. Isolation ring cylinder; 5. Controller; 6. High-temperature resistant water level sensor; 7. Heat insulation plate; 8. Combustion cylinder; 9. Water supply device; 91. Servo motor; 92. Drive rod; 93. Sealing plate; 94. Sealing gasket; 10. Connecting pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0020] For existing steam generators, after combustion, the emitted flue gas still contains a large amount of heat, and the heat in the flue gas cannot be recovered and utilized well, resulting in a large amount of energy waste. It also increases the temperature of the surrounding working environment and affects the comfort of the workers, thus causing inconvenience to the workers.

[0021] In view of this, the present invention provides a preheating steam generator. Through the cooperation of the tank, preheating device and combustion device, the heat in the exhaust gas can be recovered and utilized during combustion heating. This can preheat the prepared water, reduce the subsequent heating time, improve the overall work efficiency, improve energy utilization, and effectively reduce the temperature of the surrounding working environment, thereby improving the work comfort of the staff.

[0022] Example 1: By Figure 1 , 2As shown in section 3, a preheating steam generator includes a tank 1, a combustion cylinder 8 fixedly connected to the inner wall of the tank 1, a connecting pipe 10 connected to the upper side of one side of the tank 1, and a preheating device 2 installed above the tank 1. The preheating device 2 includes: a water tank 21 fixedly connected to the top of the tank 1; a heat exchange pipe 22 passing through the top side of the water tank 21 and with its end passing through the top of the tank 1; multiple heat exchange plates 23, all fixedly connected to the inner wall of the heat exchange pipe 22; and a water inlet 24 connected to the top side of the water tank 21. The flue gas after combustion can enter the interior of the water tank 21 through the heat exchange pipe 22 so that it can exchange heat with the water inside the water tank 21 through the heat exchange plates 23.

[0023] In the specific implementation process, it is worth noting that external water sources can be supplied to the inside of the water tank 21 through the water inlet 24, and the flue gas after combustion can be transported to the inside of the water tank 21 through the heat exchange pipe 22. Then, through heat conduction, heat exchange is carried out using the heat exchange plate 23 to preheat the water inside the water tank 21.

[0024] Furthermore, an isolation ring cylinder 4 is fixedly connected to the bottom of the inner wall of the tank body 1, and a combustion device 3 is provided below the tank body 1. The combustion device 3 includes: a gas delivery pipe 31, which passes through the lower side of the tank body 1 and extends to the lower interior of the combustion cylinder 8. The outer wall of the gas delivery pipe 31 is fixedly connected to the inner wall of the isolation ring cylinder 4 and the outer wall of the gas delivery pipe 31 is fixedly connected to the bottom of the inner wall of the tank body 1; a burner head 32, which is connected to the end of the gas delivery pipe 31; an igniter 33, which is fixedly connected to the lower interior of the combustion cylinder 8; multiple heat-conducting plates 34, which are all fixedly connected to the inner wall of the combustion cylinder 8; and a gas supply device 35, which is located on the lower side of the inner interior of the tank body 1. The external combustion gas is delivered to the lower interior of the combustion cylinder 8 through the gas delivery pipe 31 and the burner head 32, and the gas supply device 35 delivers the outside air to the lower interior of the combustion cylinder 8.

[0025] In the specific implementation process, it is worth noting that the gas transmission pipe 31 can be connected to external gas transmission equipment to transmit gas through the external gas transmission equipment, or it can be connected to an external gas transmission network. The specific gas transmission method is not limited and can be selected according to the actual use. The igniter 33 can ignite the transmitted gas.

[0026] Furthermore, the air supply device 35 includes: a filter screen 354, which is fixedly connected to the lower side of the tank body 1 by bolts; a blower 353, which is fixedly connected to the bottom side of the inner wall of the tank body 1; an air guide pipe 352, which is connected to the output end of the blower 353 and whose outer wall is fixedly connected to the inner wall of the isolation ring cylinder 4; and an annular nozzle 351, which is connected to the end of the air guide pipe 352 and fixedly connected to the lower inner wall of the combustion cylinder 8; wherein, the blower 353 delivers the air filtered by the filter screen 354 to the lower interior of the combustion cylinder 8 through the air guide pipe 352 and the annular nozzle 351;

[0027] In the specific implementation process, it is worth noting that the mesh size of filter screen 354 is not limited, as long as it meets the usage requirements. It should be noted that the staff should disassemble and clean filter screen 354 regularly to avoid clogging, which would affect the quality of use. The specific cleaning cycle is not limited and can be determined according to the actual usage situation. The model of blower 353 is not limited, as long as it meets the usage requirements. Blower 353 can deliver outside air into the combustion chamber 8 to increase the oxygen content inside the combustion chamber 8, thereby ensuring the combustion efficiency of the gas.

[0028] Furthermore, heat insulation plates 7 are fixedly connected to the inner wall of the tank body 1, the inner wall of the combustion cylinder 8, and the outer wall of the isolation ring cylinder 4. A controller 5 is fixedly connected to one side of the bottom of the inner wall of the tank body 1, and a high-temperature resistant water level sensor 6 is fixedly connected to one side of the heat insulation plate 7. The controller 5 and the high-temperature resistant water level sensor 6 are electrically connected.

[0029] In the specific implementation process, it is worth noting that there are no restrictions on the model of the controller 5 and the high-temperature water level sensor 6, as long as they meet the usage requirements. The high-temperature water level sensor 6 can monitor the water level inside the tank 1 in real time and then transmit the information to the controller 5. When the water level is insufficient, the controller 5 can control the water replenishment device 9 to replenish water. The heat insulation plate 7 can block heat, thereby reducing the efficiency of heat loss. There are no restrictions on the specific material of the heat insulation plate 7, as long as it meets the usage requirements.

[0030] Specifically, when using this preheating steam generator, the heat generated during combustion can be conducted through the heat-conducting plate 34 to heat the water and generate steam. At the same time, the flue gas generated after combustion can enter the interior of the water tank 21 through the heat exchange tube 22, and then exchange heat through the heat exchange plate 23. At this time, the water inside the water tank 21 can be preheated, and then the flue gas can be discharged through the end of the heat exchange tube 22.

[0031] Example 2: From Figure 1 , 2As shown in section 4, a water replenishment device 9 is provided on the upper side of the tank 1. The water replenishment device 9 includes: a servo motor 91, which is fixedly connected to the top side of the water tank 21 and electrically connected to the controller 5; a drive rod 92, which is fixedly connected to the output end of the servo motor 91 and rotatably connected to the top side of the water tank 21 through a sealed bearing; a sealing plate 93, which is fixedly connected to the bottom of the drive rod 92 and whose bottom is in contact with the top side of the tank 1; and a sealing gasket 94, which is fixedly connected to the bottom of the sealing plate 93 and whose bottom is in contact with the top of the tank 1. The servo motor 91 drives the sealing plate 93 to move through the drive rod 92. When the opening of the sealing plate 93 coincides with the opening on the top of the tank 1, water can be replenished; when they are misaligned, the tank can be closed.

[0032] In the specific implementation process, it is worth noting that the model of the servo motor 91 is not limited, as long as it meets the usage requirements. The servo motor 91 can drive the drive rod 92 to rotate, thereby opening and closing the top opening of the tank 1 through the sealing plate 93. The material of the sealing gasket 94 is not limited, as long as it meets the usage requirements.

[0033] Specifically, based on the above embodiment one, when water needs to be replenished, the controller 5 turns on the servo motor 91, the servo motor 91 drives the drive rod 92 to rotate, which in turn drives the sealing plate 93 to rotate. As the sealing plate 93 rotates, when the opening of the sealing plate 93 coincides with the opening at the top of the tank 1, water replenishment can be carried out. After water replenishment is completed, the servo motor 91 can be controlled again, and then the top opening of the tank 1 can be closed through the sealing plate 93, thereby completing the water replenishment work.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A preheating type steam generator comprising a tank body (1), characterized in that: A combustion cylinder (8) is fixedly connected to the inner wall of the tank (1), a connecting pipe (10) is connected to the upper side of one side of the tank (1), and a preheating device (2) is provided above the tank (1). The preheating device (2) includes: Water tank (21) is fixedly connected to the top of the tank body (1); The heat exchange tube (22) extends through one side of the top of the water tank (21) and extends through the top of the tank body (1) at its end; Multiple heat exchange plates (23) are provided and are all fixedly connected to the inner wall of the heat exchange tube (22); A water inlet (24) is connected to one side of the top of the water tank (21); The flue gas after combustion can enter the interior of the water tank (21) through the heat exchange tube (22) so that it can exchange heat with the water inside the water tank (21) through the heat exchange plate (23).

2. A preheating steam generator according to claim 1, characterized in that: An isolation ring cylinder (4) is fixedly connected to the bottom of the inner wall of the tank (1), and a combustion device (3) is provided below the tank (1). The combustion device (3) includes: A gas delivery pipe (31) passes through the lower side of the tank (1) and extends to the lower interior of the combustion cylinder (8). The outer wall of the gas delivery pipe (31) is fixedly connected to the inner wall of the isolation ring cylinder (4), and the outer wall of the gas delivery pipe (31) is fixedly connected to the bottom of the inner wall of the tank (1). A burner head (32) is connected to the end of the gas delivery pipe (31); Ignition device (33) is fixedly connected to the lower interior of the combustion cylinder (8); Multiple heat-conducting plates (34) are provided and are all fixedly connected to the inner wall of the combustion cylinder (8); The gas replenishment device (35) is located on the lower side of the inside of the tank (1); The external combustion gas is transported to the lower part of the combustion cylinder (8) through the gas delivery pipe (31) and the combustion head (32), and the gas supply device (35) delivers the external air to the lower part of the combustion cylinder (8).

3. A preheating steam generator according to claim 2, characterized in that: The gas replenishment device (35) includes: The filter screen (354) is fixedly connected to the lower side of the tank body (1) by bolts; A blower (353) is fixedly connected to one side of the bottom of the inner wall of the tank (1); The air duct (352) is connected to the output end of the fan (353), and its outer wall is fixedly connected to the inner wall of the isolation ring cylinder (4); An annular nozzle (351) is connected to the end of the air guide pipe (352) and is fixedly connected to the lower part of the inner wall of the combustion cylinder (8). The blower (353) delivers the air filtered by the filter screen (354) to the lower part of the combustion cylinder (8) through the air guide pipe (352) and the annular nozzle (351).

4. A preheating steam generator according to claim 1, characterized in that: The inner wall of the tank (1), the inner wall of the combustion cylinder (8) and the outer wall of the isolation ring cylinder (4) are all fixedly connected with heat insulation plates (7). A controller (5) is fixedly connected to one side of the bottom of the inner wall of the tank (1). A high-temperature resistant water level sensor (6) is fixedly connected to one side of the heat insulation plate (7). The controller (5) is electrically connected to the high-temperature resistant water level sensor (6).

5. A preheating steam generator according to claim 1, characterized in that: A water replenishment device (9) is provided on one side of the upper part of the tank (1), and the water replenishment device (9) includes: A servo motor (91) is fixedly connected to one side of the top of the water tank (21) and electrically connected with the controller (5); A drive rod (92) is fixedly connected to the output end of the servo motor (91) and rotatably connected to one side of the top of the water tank (21) through a sealing bearing; A sealing plate (93) is fixedly connected to the bottom of the drive rod (92) and abuts against one side of the top of the tank body (1); A sealing gasket (94) is fixedly connected to the bottom of the sealing plate (93) and abuts against the top of the tank body (1); The servo motor (91) drives the sealing plate (93) to move through the drive rod (92), and when the opening of the sealing plate (93) coincides with the opening of the top of the tank body (1), water can be added, and when the openings are staggered, the tank body (1) can be closed.

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