A boiler water supply device

Abstract

The utility model discloses a kind of boiler water supply device, including raw water tank, heat exchanger, water pump, reverse osmosis device, flash tank, boiler oxygen remover;The bottom of the raw water tank is communicated with water pump, and the water pump is communicated with heat exchanger;The heat exchanger is communicated with boiler oxygen remover by first pipeline, and the heat exchanger is communicated with reverse osmosis device, and thermometer is set between the heat exchanger and reverse osmosis device;The middle part of the flash tank is provided with steam condensate pipeline, and the top of the flash tank is provided with steam outlet;The bottom of the flash tank is communicated with boiler oxygen remover by second pipeline, and the flash tank is communicated with heat exchanger.The utility model can accurately control water temperature, guarantee processing effect.The utility model structure design is reasonable, and stable and reliable in operation, and energy consumption cost can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of boiler water supply technology, specifically relating to a boiler water supply device. Background Technology

[0002] The optimal operating temperature for reverse osmosis membranes is 25℃, at which temperature the membrane's separation efficiency, permeate flux, and permeate water quality all reach ideal levels. In actual industrial production, boiler feedwater often uses natural water sources such as surface water, whose temperature fluctuates significantly due to seasonal and environmental factors, easily deviating from the optimal range of 25℃.

[0003] Reverse osmosis membranes are extremely sensitive to changes in water temperature. Excessively high water temperatures will accelerate membrane aging and reduce service life, while excessively low water temperatures will significantly reduce membrane flux and separation efficiency, directly affecting treatment efficiency and water quality compliance.

[0004] In the existing technology, in order to control the inlet water temperature of the reverse osmosis device, the raw water is generally heated directly with 0.3MPa steam. This method has problems such as low thermal energy utilization, serious energy waste, and poor heating temperature stability, making it difficult to continuously meet the high-efficiency operation requirements of the reverse osmosis system.

[0005] Therefore, there is an urgent need for a boiler water supply device that combines precise temperature control with energy conservation. Utility Model Content

[0006] This utility model relates to a boiler water supply device, comprising a raw water tank, a heat exchanger, a water pump, a reverse osmosis unit, a flash tank, and a boiler deaerator. The bottom of the raw water tank is connected to the water pump, and the water pump is connected to the heat exchanger. The heat exchanger is connected to the boiler deaerator via a first pipeline and to the reverse osmosis unit. A thermometer is installed between the heat exchanger and the reverse osmosis unit. A steam condensate pipeline is installed in the middle part of the flash tank, and a steam outlet is installed at the top of the flash tank. The bottom of the flash tank is connected to the boiler deaerator via a second pipeline, and the flash tank is connected to the heat exchanger. A liquid level control component is installed in the flash tank.

[0007] Preferably, the steam condensate pipeline is connected to a 0.7MPa steam condensate source.

[0008] Preferably, the steam outlet is connected to a 0.3MPa steam system.

[0009] Preferably, a first valve group is provided on the first pipeline, and the first valve group is connected to a thermometer.

[0010] Preferably, a second valve group is provided on the second pipeline, and the second valve group is connected to the liquid level control component.

[0011] Preferably, a pressure gauge is installed at the outlet of the water pump.

[0012] Preferably, the reverse osmosis unit is connected to other water treatment units.

[0013] 1. This utility model reduces energy consumption costs through energy recovery. It utilizes the waste heat from the flash evaporation of 0.7MPa steam condensate, exchanging heat with raw water through a heat exchanger. This significantly reduces steam consumption, improves thermal energy utilization, achieves energy recovery and reuse, and lowers the enterprise's operating energy costs.

[0014] 2. The water temperature of this invention is precisely controllable, ensuring treatment effectiveness. Through the first valve assembly and thermometer, the temperature of the raw water entering the reverse osmosis unit can be stably controlled within the optimal range of approximately 25℃, avoiding the impact of water temperature fluctuations on membrane performance. This ensures that the separation efficiency, permeate flux, and product water quality of the reverse osmosis membrane meet requirements, improving the stability and reliability of boiler water supply.

[0015] 3. This invention can extend the service life of the membrane and reduce maintenance costs. A stable water temperature environment can reduce aging and damage to the membrane in the reverse osmosis membrane device caused by temperature shock, thus extending the service life of the membrane; at the same time, the condensate after heat exchange is directly sent to the boiler deaerator for makeup water, reducing the need for additional water treatment and lowering equipment maintenance and operating costs.

[0016] 4. This utility model has a reasonable structural design and stable and reliable operation. The entire device of this utility model has a smooth process and tight connections, and its operation is stable and reliable, making it suitable for the continuous water supply needs of industrial boilers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a boiler water supply device according to the present invention.

[0018] The markings in the diagram are as follows: 1 is the raw water tank, 2 is the heat exchanger, 3 is the reverse osmosis unit, 4 is the flash tank, 5 is the boiler deaerator, 6 is other water treatment units, 7 is the 0.3MPa steam system, 8 is the 0.7MPa steam condensate source, 9 is the second pipeline, 10 is the first pipeline, and 11 is the raw water source. Detailed Implementation

[0019] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Combination Figure 1As shown, a boiler water supply device includes a raw water tank 1, a heat exchanger 2, a water pump, a reverse osmosis device 3, a flash tank 4, and a boiler deaerator 5. The bottom of the raw water tank 1 is connected to the water pump, and the water pump is connected to the heat exchanger 2. The heat exchanger 2 is connected to the boiler deaerator 5 through a first pipeline 10, and is also connected to the reverse osmosis device 3. A thermometer is installed between the heat exchanger 2 and the reverse osmosis device 3. A steam condensate pipeline is installed in the middle part of the flash tank 4, and a steam outlet is installed at the top of the flash tank 4. The bottom of the flash tank 4 is connected to the boiler deaerator 5 through a second pipeline 9, and the flash tank 4 is connected to the heat exchanger 2. The thermometer can control the water temperature entering the reverse osmosis device 3. A liquid level control component is installed in the flash tank 4.

[0021] Preferably, the steam condensate pipeline is connected to the recovered 0.7MPa steam condensate source 8.

[0022] Preferably, the steam outlet is connected to the 0.3MPa steam system 7. The 0.3MPa steam exits from the steam outlet and enters the 0.3MPa steam system 7.

[0023] The condensate from the 0.7MPa steam enters the flash tank 4, where its boiling point drops below the ambient temperature. Some of the liquid vaporizes instantly due to overheating, generating 0.3MPa steam, which overflows from the top of the flash tank 4 and flows into the 0.3MPa steam system 7 through the steam outlet. The condensate, under the control of the level control components, is then transported to the boiler deaerator 5 as boiler feedwater.

[0024] Preferably, a first valve group is provided on the first pipeline 10, and the first valve group is connected to the thermometer.

[0025] Preferably, a second valve group is provided on the second pipeline 9, and the second valve group is connected to the liquid level control component.

[0026] Preferably, a pressure gauge is installed at the outlet of the water pump.

[0027] Preferably, the reverse osmosis unit 3 is connected to other water treatment units 6.

[0028] In the prior art, the water in the reverse osmosis unit 3 is directly heated by steam from the 0.3MPa steam system 7, which results in energy waste. This invention overcomes the shortcomings of the prior art. The specific working process is as follows: Working process of this invention: The raw water in the raw water tank 1 (from the raw water source 11) enters the heat exchanger 2 via a water pump, where it exchanges heat with the high-temperature condensate from the flash tank 4, thus initially raising the temperature.

[0029] Steam condensate flash evaporation and waste heat utilization: The recovered 0.7MPa steam condensate enters the flash tank 4 from the 0.7MPa steam condensate source 8. The high-pressure saturated condensate is instantly vaporized in the low-pressure environment of the flash tank 4. The 0.3MPa steam generated by flash evaporation is discharged from the steam outlet at the top of the tank and merged into the 0.3MPa steam system 7 for recycling and reuse. The high-temperature condensate remaining after flash evaporation is stored in the flash tank 4 to provide a stable heat source for heat exchange.

[0030] Water temperature regulation and reverse osmosis treatment: The raw water that has completed waste heat exchange in the heat exchanger 2 is precisely regulated to about 25°C by the outlet thermometer, and then enters the reverse osmosis device 3 for water purification treatment before entering the other water treatment unit 6. The reverse osmosis device 3 can ensure that the water meets the water supply standards of the other water treatment unit 6.

[0031] Condensate and treated water makeup: Part of the condensate in flash tank 4 is directly transported to boiler deaerator 5 for boiler makeup water through the second pipeline 9 and the second valve group under the action of the liquid level control component; the other part is sent to boiler deaerator 5 through the first pipeline 10 and the first valve group (linked with thermometer control) after heat exchange in heat exchanger 2.

[0032] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly; connection can be direct or indirect through an intermediate medium. The terms "upper" and "lower," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, not indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A boiler water supply device, characterized in that: Includes raw water tank (1), heat exchanger (2), water pump, reverse osmosis device (3), flash tank (4), boiler deaerator (5); The bottom of the raw water tank (1) is connected to the water pump, and the water pump is connected to the heat exchanger (2); the heat exchanger (2) is connected to the boiler deaerator (5) through the first pipeline (10), and the heat exchanger (2) is connected to the reverse osmosis device (3). A thermometer is installed between the heat exchanger (2) and the reverse osmosis device (3); a steam condensate pipeline is installed in the middle part of the flash tank (4), and a steam outlet is installed at the top of the flash tank (4); the bottom of the flash tank (4) is connected to the boiler deaerator (5) through the second pipeline (9), and the flash tank (4) is connected to the heat exchanger (2); a liquid level control component is installed in the flash tank (4).

2. The boiler water supply device according to claim 1, characterized in that: The steam condensate pipeline is connected to a 0.7MPa steam condensate source (8).

3. A boiler water supply device according to claim 1, characterized in that: The steam outlet is connected to the 0.3MPa steam system (7).

4. A boiler water supply device according to claim 1, characterized in that: A first valve group is installed on the first pipeline (10), and the first valve group is connected to a thermometer.

5. A boiler water supply device according to claim 1, characterized in that: A second valve group is provided on the second pipeline (9), and the second valve group is connected to the liquid level control component.

6. A boiler water supply device according to claim 1, characterized in that: A pressure gauge is installed at the outlet of the water pump.

7. A boiler water supply device according to claim 1, characterized in that: The reverse osmosis unit (3) is connected to other water treatment units (6).

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