A device for replacing deaerated water in a condensate water replacement steam desuperheater

Abstract

This utility model relates to the field of steam system technology, and is a device for replacing deoxygenated water in a steam desuperheater with condensate. It includes: a high-pressure steam supply unit, a medium- and low-pressure steam supply unit, a desuperheater, and a condensate tank. The high-pressure steam supply unit takes high-pressure steam as input, and its output ends are connected to both the desuperheater and the condensate tank. The high-pressure condensate output from the high-pressure steam supply unit is input to either the desuperheater or the condensate tank. The medium- and low-pressure steam supply unit is connected to the desuperheater at one end and to the condensate tank at the other end. The medium- and low-pressure steam supply unit takes medium- and low-pressure steam that has passed through the desuperheater as input and inputs the output low-pressure condensate to the condensate tank. This utility model designs and installs a condensate delivery pipeline to directly introduce high-pressure steam condensate into the medium / low-pressure steam desuperheater, and modifies the control system of the steam desuperheater to adapt to the physical characteristics of the condensate.

Description

Technical Field

[0001] This utility model relates to the field of steam system technology, and in particular to a device for replacing the deoxygenated water in a steam desuperheater with condensate. Background Technology

[0002] In steam systems, desuperheaters are crucial devices for controlling steam temperature and preventing damage from overheated steam. Their performance directly impacts the stability and efficiency of the entire system. Traditionally, deoxygenated water is used as the desuperheater's water source, but this method suffers from high energy consumption, large pressure differentials, and complex control. Condensate, as a product of steam condensation, has a temperature close to its saturation temperature and is pure, making it an ideal alternative to deoxygenated water. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a device for replacing deoxygenated water in a steam desuperheater with condensate. This invention designs and installs a condensate delivery pipeline to directly introduce high-pressure steam condensate into a medium / low-pressure steam desuperheater, and modifies the control system of the steam desuperheater to adapt to the physical properties of the condensate.

[0004] The technical means adopted in this utility model are as follows:

[0005] An apparatus for replacing deoxygenated water in a steam desuperheater with condensate, comprising: a high-pressure steam supply unit, a medium- and low-pressure steam supply unit, a desuperheater, and a condensate tank, wherein:

[0006] The high-pressure steam equipment takes high-pressure steam as input and connects the output end to a desuperheater and a condensate tank respectively, and inputs the high-pressure condensate output by the high-pressure steam equipment to the desuperheater or the condensate tank.

[0007] The medium- and low-pressure steam generating equipment is connected to a desuperheater at one end and a condensate tank at the other end. The medium- and low-pressure steam generating equipment takes the medium- and low-pressure steam passing through the desuperheater as input and inputs the output low-pressure condensate into the condensate tank.

[0008] Furthermore, the high-pressure condensate is fed into the desuperheater through a pipeline to replace the deoxygenated water and control the temperature of the desuperheating steam.

[0009] Furthermore, the condensate tank is used to collect high-pressure condensate output from high-pressure steam equipment and low-pressure condensate output from medium- and low-pressure steam equipment.

[0010] Furthermore, a water quality monitor and a flow meter are installed on the pipeline between the high-pressure steam equipment and the desuperheater. The water quality monitor is used to detect the water quality of the high-pressure condensate, and the flow meter is used to measure the flow rate of the high-pressure condensate.

[0011] Furthermore, a condensate pump is connected to the output end of the condensate tank.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] This invention provides a device for replacing deoxygenated water in a steam desuperheater with condensate. By using condensate to replace deoxygenated water, the efficiency of the steam desuperheater can be improved because the condensate temperature is close to the saturation temperature, thereby reducing system steam energy consumption. Furthermore, the condensate is relatively pure, reducing the complexity and cost of water quality management. Regular water quality monitoring ensures that the system water quality meets requirements, guaranteeing safe system operation. The use of condensate reduces the demand for deoxygenated water, thus lowering energy consumption and costs in the water treatment process. This invention also reduces the flow rate of high-pressure condensate into low-pressure condensate, effectively reducing water hammer and improving system reliability.

[0014] This utility model provides a device for replacing deoxygenated water in a steam desuperheater with condensate. It designs and installs a condensate delivery pipeline to directly introduce high-pressure steam condensate into the medium / low-pressure steam desuperheater. The pipeline layout is reasonable, reducing resistance loss and improving delivery efficiency. Necessary valves, flow meters, and water quality monitoring equipment are installed on the pipeline for monitoring and adjustment.

[0015] The present invention provides a device for replacing deoxygenated water in a steam desuperheater with condensate water, which modifies the control system of the steam desuperheater to adapt to the physical properties of condensate water, adjusts the desuperheating water flow rate and temperature control strategy, and ensures that the steam temperature is stable within a reasonable range.

[0016] Based on the above reasons, this utility model can be widely promoted in fields such as steam desuperheating utilization. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the device structure for replacing the deoxygenated water in the steam desuperheater using condensate in this utility model.

[0019] In the diagram: 1. High-pressure steam; 2. Medium and low-pressure steam; 3. Deoxygenated water; 4. High-pressure steam equipment; 5. Medium and low-pressure steam equipment; 6. Condensate tank; 7. Condensate pump; 8. Water quality monitor; 9. Flow meter; 10. Desuperheater. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] like Figure 1 As shown, this utility model provides a device for replacing deoxygenated water in a steam desuperheater with condensate, characterized in that it includes: a high-pressure steam supply unit 4, a medium- and low-pressure steam supply unit 5, a desuperheater 10, and a condensate tank 6, wherein:

[0025] The high-pressure steam generator 4 takes high-pressure steam 1 as input and connects the output end to the desuperheater 10 and the condensate tank 6 respectively. The high-pressure condensate output from the high-pressure steam generator is input to the desuperheater 10 or the condensate tank 6. Part of the high-pressure condensate is used to replace the deoxygenated water in the steam desuperheater, and the remaining part is sent to the condensate tank through the original process.

[0026] The medium- and low-pressure steam generating equipment 5 is connected to a desuperheater 10 at one end and a condensate tank 6 at the other end. The medium- and low-pressure steam generating equipment 5 takes the medium- and low-pressure steam 2 that has passed through the desuperheater 10 as input and inputs the output low-pressure condensate into the condensate tank 6.

[0027] In a preferred implementation, the high-pressure condensate is piped to the desuperheater 10 to replace the deoxygenated water 3 and control the temperature of the desuperheating steam. The deoxygenated water pressure is 5.5-6.0 MPa(G), and the temperature is 100-120℃; the condensate pressure is 2.5-3.5 MPa(G), and the temperature is 220-250℃. The deoxygenated water flow is retained for emergency use.

[0028] In a specific implementation, as a preferred embodiment, the condensate tank 6 is used to collect the high-pressure condensate output from the high-pressure steam generator 4 and the low-pressure condensate output from the medium- and low-pressure steam generator 5.

[0029] In a specific implementation, as a preferred embodiment, a water quality monitor 8 and a flow meter 9 are installed on the pipeline between the high-pressure steam equipment 4 and the desuperheater 10. The water quality monitor 8 is used to detect the water quality of the high-pressure condensate; the flow meter 9 is used to measure the flow rate of the high-pressure condensate.

[0030] In a specific implementation, as a preferred embodiment, the output end of the condensate tank 6 is connected to a condensate pump 7.

[0031] Example 1

[0032] The medium-pressure steam pressure is 2.2-2.5 MPa(G) and the temperature is 300-320℃. After passing through the desuperheater, the pressure is controlled at 2.1-2.4 MPa(G) and the temperature at 250-260℃. After the implementation of this utility model, condensate is used to replace deoxygenated water, the desuperheating steam parameters remain unchanged, the water injection volume of the desuperheater can be increased by 25%, the medium-pressure steam consumption is reduced by 1-2%, and the pressure difference between the water injection and steam is reduced, thus improving the system stability.

[0033] Example 2

[0034] The low-pressure steam pressure is 1.0-1.3 MPa(G) and the temperature is 230-260℃. After passing through the desuperheater, the pressure is controlled at 1.0-1.3 MPa(G) and the temperature at 190-220℃. After the implementation of this utility model, condensate is used to replace deoxygenated water, the desuperheating steam parameters remain unchanged, the water injection volume of the desuperheater is increased by 30%, the medium-pressure steam consumption is reduced by 1-2%, and the pressure difference between the water injection and the steam is reduced, thus improving the system stability.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for replacing deoxygenated water in a steam desuperheater with condensate, characterized in that, include: High-pressure steam equipment (4), medium and low-pressure steam equipment (5), desuperheater (10), and condensate tank (6), wherein: The high-pressure steam equipment (4) takes high-pressure steam (1) as input and connects the output end to the desuperheater (10) and the condensate tank (6) respectively, and inputs the high-pressure condensate output by the high-pressure steam equipment to the desuperheater (10) or the condensate tank (6). The medium and low pressure steam equipment (5) is connected to a desuperheater (10) at one end and a condensate tank (6) at the other end. The medium and low pressure steam equipment (5) takes the medium and low pressure steam (2) passing through the desuperheater (10) as input and inputs the output low pressure condensate into the condensate tank (6).

2. The apparatus for replacing deoxygenated water in a steam desuperheater with condensate according to claim 1, characterized in that, The high-pressure condensate is fed into the desuperheater (10) through a pipeline to replace the deoxygenated water (3) and control the temperature of the desuperheating steam.

3. The apparatus for replacing deoxygenated water in a steam desuperheater according to claim 1, characterized in that, The condensate tank (6) is used to collect the high-pressure condensate output from the high-pressure steam equipment (4) and the low-pressure condensate output from the medium and low-pressure steam equipment (5).

4. The apparatus for replacing deoxygenated water in a steam desuperheater according to claim 1, characterized in that, A water quality monitor (8) and a flow meter (9) are installed on the pipeline between the high-pressure steam equipment (4) and the desuperheater (10). The water quality monitor (8) is used to detect the water quality of the high-pressure condensate; the flow meter (9) is used to measure the flow rate of the high-pressure condensate.

5. The apparatus for replacing deoxygenated water in a steam desuperheater with condensate according to claim 1, characterized in that, The output end of the condensate tank (6) is connected to a condensate pump (7).

Images