Sub-critical and above pressure boiler water replenishing device

Abstract

The utility model discloses a water replenishing device for a subcritical and above pressure boiler, and relates to the technical field of boiler equipment. The boiler comprises a boiler body, a water level detector is installed on one side of the boiler body, a water tank is installed at the top of the boiler body, a water conveying pipe is communicated between the water tank and the boiler body, and an electromagnetic valve is arranged on the surface of the water conveying pipe in a sleeved mode. A heat exchange assembly is arranged at the top of the boiler body and comprises a smoke exhaust pipe, the smoke exhaust pipe communicates with the top of the boiler body, and the other end of the smoke exhaust pipe penetrates into the water tank and communicates with a heat conduction pipe. Through the arrangement of the heat exchange assembly, when waste gas is exhausted through the smoke exhaust pipe in the working process of the boiler body, smoke is guided through the temperature guide pipe, when the smoke passes through the water tank, water stored in the water tank can be preheated, the function of waste heat recovery is achieved, and meanwhile the temperature requirement for water supplementing is met; the temperature of water injected into the furnace body is kept balanced, the influence of temperature difference on the furnace body is reduced, and the protection effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler equipment, and particularly relates to a boiler water replenishing device for subcritical and above pressure boilers. Background Technique

[0002] A boiler generates heat energy by burning fuel or using other energy forms (such as electric energy), heats water to a high temperature state to generate steam or hot water. The working pressure of the boiler is slightly lower than the critical point (the critical point refers to the critical state of pressure and temperature where the liquid phase and gas phase can coexist), but higher than the conventional subcritical pressure. When the water level in the boiler is too low, an appropriate amount of water needs to be added to the boiler to maintain the set water level range.

[0003] However, in the existing boiler water replenishing methods, most directly inject water flow into the boiler through a water pump. The injected water flow has a low temperature and needs to be continuously heated for a period of time to maintain balance, which has a particularly large impact on the internal temperature and pressure of the boiler, resulting in extremely unstable fluctuations in temperature and pressure values and easily causing boiler damage.

[0004] Therefore, we provide a boiler water replenishing device for subcritical and above pressure boilers to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a boiler water replenishing device for subcritical and above pressure boilers. Through the cooperation of a heat exchange component and a water delivery component, it solves the problem that the existing boiler water replenishing method lacks a preheating function, the injected water flow has a low temperature, which will cause extremely unstable fluctuations in the internal temperature and pressure values of the boiler and easily cause boiler damage.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a boiler water replenishing device for subcritical and above pressure boilers, including a furnace body. A water level detector is installed on one side of the furnace body, a water tank is installed on the top of the furnace body, a water delivery pipe is connected between the water tank and the furnace body, and a solenoid valve is sleeved on the surface of the water delivery pipe;

[0008] A heat exchange component is arranged on the top of the furnace body. The heat exchange component includes an exhaust pipe, the exhaust pipe is connected to the top of the furnace body, the other end of the exhaust pipe penetrates into the water tank and is connected to a temperature guiding pipe, a spraying pipe is arranged inside the water tank, and nozzles are connected to the surface of the spraying pipe;

[0009] A water delivery component is arranged on one side of the water tank. The water delivery component includes a delivery shell, the delivery shell is fixedly connected to one side of the water tank, and a driving motor is installed on one side of the delivery shell.

[0010] The present utility model is further configured such that the water delivery assembly further includes a transmission rod, the transmission rod is fixedly connected to the output end of the drive motor, the other end of the transmission rod penetrates into the inside of the delivery housing and is fixedly connected to a first gear, a second gear is meshed with one side of the first gear, and the other end of the spraying pipe penetrates outside the water tank and is fixedly connected to a first belt pulley.

[0011] The present utility model is further configured such that a water storage box is sleeved on the surface of the spraying pipe, and water inlet holes are formed on the surface of the spraying pipe and inside the water storage box.

[0012] The present utility model is further configured such that a second belt pulley is fixedly connected to the surface of the transmission rod, and the first belt pulley and the second belt pulley are connected by a belt in a transmission manner.

[0013] The present utility model is further configured such that one side of the water storage box is fixedly connected to the water tank, and the surface of the spraying pipe is movably connected to the inner wall of the water tank through a bearing.

[0014] The present utility model is further configured such that a delivery pipe is communicated with the top of the water storage box, and the other end of the delivery pipe is communicated with the delivery housing.

[0015] The present utility model is further configured such that a water suction pipe is communicated with the bottom of the delivery housing, and the other end of the water suction pipe is communicated with the water tank.

[0016] The present utility model is further configured such that a temperature sensor is installed inside the water tank, and a water inlet pipe is communicated with the top of the water tank.

[0017] The present utility model has the following beneficial effects:

[0018] Through the arrangement of the heat exchange assembly, in the process of the furnace body working, when exhausting waste gas through the smoke exhaust pipe, the smoke is guided through the temperature guiding pipe. When the smoke passes through the water tank, the water stored inside the water tank can be preheated, achieving the function of waste heat recovery. At the same time, it meets the temperature requirement for water replenishment, keeps the water temperature injected into the furnace body balanced, reduces the influence of temperature difference on the furnace body, and improves the protection effect.

[0019] Of course, when implementing any product of the present utility model, it is not necessarily required to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below.

[0021] Figure 1 It is a three-dimensional structure diagram of a water replenishing device for a subcritical and above pressure boiler;

[0022] Figure 2It is a cross-sectional view of a water tank in a water replenishing device for a subcritical and above-pressure boiler;

[0023] Figure 3 It is an exploded schematic view of a temperature guiding pipe and a spraying pipe in a water replenishing device for a subcritical and above-pressure boiler;

[0024] Figure 4 It is a side cross-sectional view of a conveying shell in a water replenishing device for a subcritical and above-pressure boiler;

[0025] Figure 5 It is a partial cross-sectional view of a water storage box in a water replenishing device for a subcritical and above-pressure boiler.

[0026] In the attached drawings: 1. Furnace body; 2. Water level detector; 3. Water tank; 4. Water delivery pipe; 5. Solenoid valve; 6. Smoke exhaust pipe; 7. Temperature guiding pipe; 8. Spraying pipe; 9. Sprinkler head; 10. Conveying shell; 11. Driving motor; 12. Transmission rod; 13. First gear; 14. Second gear; 15. First belt pulley; 16. Water storage box; 17. Water inlet hole; 18. Second belt pulley; 19. Delivery pipe; 20. Suction pipe; 21. Temperature sensor; 22. Water inlet pipe. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be described in conjunction with the attached drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Specific embodiment 1

[0029] Please refer to Figures 1-5 , the present invention is a water replenishing device for a subcritical and above-pressure boiler, including a furnace body 1, a water level detector 2 is installed on one side of the furnace body 1, a water tank 3 is installed on the top of the furnace body 1, a water delivery pipe 4 is connected between the water tank 3 and the furnace body 1, and a solenoid valve 5 is sleeved on the surface of the water delivery pipe 4; a heat exchange component is arranged on the top of the furnace body 1, the heat exchange component includes a smoke exhaust pipe 6, the smoke exhaust pipe 6 is communicated with the top of the furnace body 1, the other end of the smoke exhaust pipe 6 penetrates into the interior of the water tank 3 and is communicated with a temperature guiding pipe 7, a spraying pipe 8 is arranged inside the water tank 3, and a sprinkler head 9 is communicated with the surface of the spraying pipe 8; a water delivery component is arranged on one side of the water tank 3, the water delivery component includes a conveying shell 10, the conveying shell 10 is fixedly connected to one side of the water tank 3, and a driving motor 11 is installed on one side of the conveying shell 10.

[0030] Specifically: The water level detector 2 uses a float-type water level switch to measure the water level by utilizing the buoyancy of the float. The float moves up and down as the water level rises and falls, triggering the switch at a specific water level position, thereby sending a signal or controlling the operation of related devices, playing the role of detecting the water level inside the furnace body 1. The solenoid valve 5 can control the opening and closing of the water delivery pipe 4, and inject the water inside the water tank 3 into the furnace body 1 through the water delivery pipe 4 to achieve the function of water replenishment. The heat conduction pipe 7 is made of copper alloy and can conduct the heat in the flue gas. A micro nozzle is installed inside the nozzle 9. When the nozzle 9 is filled with water, the water flow can be ejected under the action of water pressure. Specific Embodiment 2

[0032] Please refer to Figures 1-5 , on the basis of Specific Embodiment 1, the water delivery assembly further includes a transmission rod 12. The transmission rod 12 is fixedly connected to the output end of the driving motor 11. The other end of the transmission rod 12 penetrates into the inside of the delivery housing 10 and is fixedly connected to a first gear 13. A second gear 14 is meshed with one side of the first gear 13. The other end of the spraying pipe 8 penetrates outside the water tank 3 and is fixedly connected to a first pulley 15. A water storage box 16 is sleeved on the surface of the spraying pipe 8. A water inlet hole 17 is formed on the surface of the spraying pipe 8 and inside the water storage box 16. A second pulley 18 is fixedly connected to the surface of the transmission rod 12. The first pulley 15 and the second pulley 18 are connected by a belt in a transmission manner. One side of the water storage box 16 is fixedly connected to the water tank 3. The surface of the spraying pipe 8 is movably connected to the inner wall of the water tank 3 through a bearing. The top of the water storage box 16 is communicated with a delivery pipe 19. The other end of the delivery pipe 19 is communicated with the delivery housing 10. The bottom of the delivery housing 10 is communicated with a water suction pipe 20. The other end of the water suction pipe 20 is communicated with the water tank 3. A temperature sensor 21 is installed inside the water tank 3. The top of the water tank 3 is communicated with a water inlet pipe 22.

[0033] Specifically: The first gear 13 and the second gear 14 are meshed with each other. The first gear 13 is a driving gear, and the second gear 14 is a driven gear. A sealed working chamber is formed between the two groups of gears through meshing. As the driving gear rotates, the driven gear also rotates accordingly. The volume inside the delivery housing 10 gradually expands, and the liquid is sucked into the chamber. As the gears continue to rotate, the volume at the meshing part gradually decreases, the pressure increases, and the liquid is forced to be pumped out through the outlet channel. The water flow is injected into the water storage box 16 through the delivery pipe 19. The temperature sensor 21 can detect the temperature inside the water tank 3.

[0034] The working principle of the present utility model is as follows: During the operation of the furnace body 1, waste gas can be discharged through the exhaust pipe 6. The waste gas contains a certain amount of heat. When the waste gas enters the temperature conduction pipe 7 through the exhaust pipe 6, the driving motor 11 is started. The driving motor 11 drives the first gear 13 to rotate in cooperation with the transmission rod 12. The first gear 13 drives the second gear 14 to rotate, gradually expanding the volume inside the conveying shell 10. The water inside the water tank 3 is sucked into the cavity through the water suction pipe 20. As the gears continue to rotate, the volume at the meshing part gradually decreases, the pressure increases, and the liquid is forced to be pumped out through the outlet channel, and the water flow is injected into the water storage box 16 through the conveying pipe 19. Then, it enters the spraying pipe 8 through the water inlet hole 17, and then the water flow is sprayed onto the temperature conduction pipe 7 by the nozzle 9, and the water flow is heated by the temperature in the flue gas, playing a role in waste heat recovery;

[0035] While the transmission rod 12 rotates, it drives the second belt pulley 18 to rotate. The second belt pulley 18 drives the spraying pipe 8 to rotate in cooperation with the first belt pulley 15. The spraying pipe 8 drives the nozzle 9 to rotate, increasing the spraying range, increasing the contact area between the water flow and the temperature conduction pipe 7, and improving the heat exchange effect;

[0036] The temperature inside the water tank 3 is controlled by the temperature sensor 21. When the water level detector 2 detects that the water level inside the furnace body 1 is lower than the set value, the solenoid valve 5 can be started. The solenoid valve 5 opens the water delivery pipe 4, and the water flow inside the water tank 3 is injected into the furnace body 1 for water replenishment, so that the water temperature injected into the furnace body 1 remains balanced, reducing the influence of the temperature difference on the furnace body 1 and improving the protection effect.

[0037] The standard parts used in the present utility model can all be purchased from the market, and can also be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The control method is automatically controlled through the control unit. The control circuit of the control unit can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in the art. Therefore, the control method and the circuit connection are not explained in detail in the present utility model.

[0038] The above - disclosed preferred embodiments of the present utility model are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model.

Claims

1. A water replenishment device for a subcritical or higher pressure boiler, comprising a boiler body (1), characterized in that: A water level detector (2) is installed on one side of the furnace body (1), a water tank (3) is installed on the top of the furnace body (1), a water pipe (4) is connected between the water tank (3) and the furnace body (1), and a solenoid valve (5) is sleeved on the surface of the water pipe (4); A heat exchange component is arranged on the top of the furnace body (1), and the heat exchange component comprises a smoke exhaust pipe (6), the smoke exhaust pipe (6) is connected to the top of the furnace body (1), the other end of the smoke exhaust pipe (6) penetrates into the water tank (3) and is connected to a temperature conducting pipe (7), a spray pipe (8) is arranged inside the water tank (3), and a spray head (9) is connected to the surface of the spray pipe (8); A water delivery component is provided on one side of the water tank (3), the water delivery component comprising a delivery shell (10), the delivery shell (10) is fixedly connected to one side of the water tank (3), and a drive motor (11) is installed on one side of the delivery shell (10).

2. A water replenishment device for subcritical and above pressure boilers according to claim 1, characterized in that: The water delivery assembly further comprises a transmission rod (12), wherein the transmission rod (12) is fixedly connected to the output end of the driving motor (11), the other end of the transmission rod (12) passes through the interior of the delivery shell (10) and is fixedly connected to a first gear (13), one side of the first gear (13) is meshed with a second gear (14), and the other end of the spray pipe (8) passes through the exterior of the water tank (3) and is fixedly connected to a first belt pulley (15).

3. The water replenishment device for subcritical and above pressure boilers according to claim 1, characterized in that: A water storage box (16) is sleeved on the surface of the spray pipe (8), and a water inlet hole (17) is opened on the surface of the spray pipe (8) and inside the water storage box (16).

4. A water replenishment device for subcritical and above pressure boilers according to claim 2, characterized in that: A second belt pulley (18) is fixedly connected to the surface of the transmission rod (12), and the first belt pulley (15) and the second belt pulley (18) are connected via a belt transmission.

5. The water replenishment device for subcritical and above pressure boilers according to claim 3, characterized in that: One side of the water storage box (16) is fixedly connected to the water tank (3), and the surface of the spray pipe (8) is movably connected to the inner wall of the water tank (3) via a bearing.

6. A water replenishment device for subcritical and above pressure boilers according to claim 3, characterized in that: The top of the water storage box (16) is connected to a delivery pipe (19), and the other end of the delivery pipe (19) is connected to the delivery shell (10).

7. The water replenishment device for subcritical and above pressure boilers according to claim 1, characterized in that: The bottom of the conveying shell (10) is connected to a water suction pipe (20), and the other end of the water suction pipe (20) is connected to the water tank (3).

8. The water replenishment device for subcritical and above pressure boilers according to claim 1, characterized in that: A temperature sensor (21) is installed inside the water tank (3), and a water inlet pipe (22) is connected to the top of the water tank (3).

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