Built-in deaerator capable of discharging water at low temperature

Abstract

The utility model provides a built-in deaerator capable of discharging water at low temperature, which relates to the technical field of deaerators and comprises a deaeration area and a flow guide pipe, an upper partition plate is arranged on the lower portion of the deaeration area, a lower partition plate is arranged on the lower portion of the upper partition plate, heat preservation filler is arranged between the upper partition plate and the lower partition plate, and a heat exchange pipe is arranged at the bottom of the lower partition plate. The deoxidizing area is connected with the heat exchange pipe through a flow guide pipe, one end of the heat exchange pipe is a condensate water inlet, and the other end of the heat exchange pipe is a condensate water outlet. According to the utility model, by arranging the structures such as the deoxidizing area, the flow guide pipe, the upper partition plate, the heat preservation filler, the lower partition plate and the heat exchange pipe, the water outlet temperature of the deaerator is low, the necessary net positive suction head of the water feeding pump is reduced, meanwhile, the deaerator does not need to be arranged at a high position, a booster pump does not need to be added, the construction or purchase cost is reduced, and the water outlet temperature of the deaerator is low; and the power of the feed pump is reduced, and the purchase cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of deaerators, in particular to a built-in deaerator for low-temperature water outlet. Background Art

[0002] In order to prevent oxygen corrosion from occurring in boiler steam-water pipes, the oxygen content of boiler feed water needs to be controlled below a certain standard. Therefore, a deaerator is arranged in front of the feed water pump to reduce the oxygen content of boiler feed water. The outlet water of the deaerator is saturated water under its working pressure and has a high temperature. On the one hand, it is easier to evaporate within the low pressure range of the feed water pump inlet, resulting in cavitation and damage to the water pump. To avoid this phenomenon, it is often used to arrange the deaerator at a high position or add a booster pump in front of the feed water pump to increase the water pressure at the pump inlet, which increases the civil engineering or procurement costs; on the other hand, due to the high water temperature, the feed water pump has a larger power selection and the cost increases, so it needs to be improved. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a built-in deaerator for low-temperature water outlet, comprising a deaeration zone and a guide pipe, an upper baffle is arranged at the lower part of the deaeration zone, a lower baffle is arranged at the lower part of the upper baffle, a thermal insulation filler is arranged between the upper baffle and the lower baffle, and a heat exchange tube is arranged at the bottom of the lower baffle.

[0005] Preferably, the deaeration zone and the heat exchange tube are connected via a flow guide pipe. Here, the connection via the flow guide pipe improves the water supply transmission efficiency.

[0006] Preferably, one end of the heat exchange tube is a condensed water inlet, and the other end of the heat exchange tube is a condensed water outlet. Here, the inlet and the outlet facilitate the condensed water to enter and exit the heat exchange tube.

[0007] Preferably, the guide pipe, upper baffle, heat-insulating filler, lower baffle and heat exchange pipe are all arranged inside the deaerator. Here, the use effect of the deaerator is improved by arranging them inside the deaerator.

[0008] Preferably, the deaeration zone and the draft tube are interconnected, thereby improving the conveying effect of the draft tube through the interconnection.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. In the utility model, by setting up the deaerator zone, the guide pipe, the upper baffle, the thermal insulation filler, the lower baffle and the heat exchange tube and other structures, the outlet water temperature of the deaerator is low, and the necessary NPSH of the feed water pump is reduced. At the same time, the deaerator does not need to be arranged at a high position, and there is no need to increase the booster pump, which reduces the construction or procurement cost. In addition, the outlet water temperature of the deaerator is low, which also reduces the power of the feed water pump and reduces the procurement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model provides a schematic diagram of the overall structure of a built-in deaerator for low-temperature water outlet.

[0012] Legend:

[0013] 1. Deaeration zone; 2. Draft tube; 3. Upper baffle; 4. Insulation filler; 5. Lower baffle; 6. Heat exchange tube. DETAILED DESCRIPTION

[0014] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0015] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0016] Embodiment 1

[0017] See also Figure 1 The utility model provides a technical solution: a built-in deaerator with low-temperature water outlet, including a deaerator zone 1 and a guide pipe 2, an upper baffle 3 is arranged at the lower part of the deaerator zone 1, a lower baffle 5 is arranged at the lower part of the upper baffle 3, a heat-insulating filler 4 is arranged between the upper baffle 3 and the lower baffle 5, and a heat-exchange tube 6 is arranged at the bottom of the lower baffle 5. By setting the deaerator zone 1, the guide pipe 2, the upper baffle 3, the heat-insulating filler 4, the lower baffle 5 and the heat-exchange tube 6 and other structures, the outlet water temperature of the deaerator is low, and the necessary cavitation margin of the feed water pump is reduced. At the same time, the deaerator does not need to be arranged at a high position, and there is no need to increase the booster pump, which reduces the construction or procurement cost. In addition, the outlet water temperature of the deaerator is low, which also reduces the power of the feed water pump and reduces the procurement cost.

[0018] See also Figure 1The deaeration zone 1 is connected to the heat exchange tube 6 through the guide tube 2. The connection through the guide tube 2 improves the water supply transportation efficiency. One end of the heat exchange tube 6 is the condensate inlet, and the other end of the heat exchange tube 6 is the condensate outlet. The inlet and the outlet facilitate the condensate to enter and exit the heat exchange tube 6. The guide tube 2, the upper partition 3, the insulation filler 4, the lower partition 5 and the heat exchange tube 6 are all arranged inside the deaerator. By being arranged inside the deaerator, the use effect of the deaerator is improved. The deaeration zone 1 and the guide tube 2 are interconnected. The transportation effect of the guide tube 2 is improved by being interconnected.

[0019] Working principle: After being deoxygenated in the deoxygenation zone 1, the feed water reaches the saturation temperature, flows evenly to the heat exchange tube 6 through the guide pipe 2, exchanges heat with the condensed water in the heat exchange tube 6, and reduces the temperature of the deoxygenated water. An upper baffle 3, a lower baffle 5 and a heat-insulating filler 4 are arranged between the deoxygenation zone 1 and the heat exchange tube 6 to ensure the temperature of the deoxygenation zone 1.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A built-in deaerator for low-temperature water outlet, comprising a deaeration zone (1) and a flow guide pipe (2), characterized in that: An upper baffle (3) is arranged at the lower part of the deoxidation zone (1), a lower baffle (5) is arranged at the lower part of the upper baffle (3), a heat-insulating filler (4) is arranged between the upper baffle (3) and the lower baffle (5), and a heat exchange tube (6) is arranged at the bottom of the lower baffle (5).

2. The built-in deaerator for low-temperature water outlet according to claim 1, characterized in that: The deoxidation zone (1) and the heat exchange tube (6) are connected via a flow guide tube (2).

3. The built-in deaerator for low-temperature water outlet according to claim 1, characterized in that: One end of the heat exchange tube (6) is a condensed water inlet, and the other end of the heat exchange tube (6) is a condensed water outlet.

4. The built-in deaerator for low-temperature water outlet according to claim 1, characterized in that: The flow guide pipe (2), the upper baffle (3), the heat-insulating filler (4), the lower baffle (5) and the heat exchange pipe (6) are all arranged inside the deaerator.

5. The built-in deaerator for low-temperature water outlet according to claim 1, characterized in that: The deoxidation zone (1) and the flow guide pipe (2) are communicated with each other.

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