Chilled water cooling system of blast furnace electric blower unit

Abstract

The utility model is suitable for the technical field of metallurgical equipment, and provides a chilled water cooling system of a blast furnace electric blower unit. Comprising a lithium bromide refrigerator, an air-water cooler, a lubricating oil cooler and a control oil cooler, a low-position low-pressure saturated steam interface of the lithium bromide refrigerator is connected to a surplus saturated steam discharge end of the steel production line; the refrigeration output end of the lithium bromide refrigerator is connected with the air-water cooler, the lubricating oil cooler and the control oil cooler, and cold sources are provided for the air-water cooler, the lubricating oil cooler and the control oil cooler. According to the utility model, surplus saturated steam of an iron and steel combined enterprise is used for providing heat energy for the lithium bromide refrigerating machine, and chilled water prepared by the lithium bromide refrigerating machine meets the cooling requirements of the motor air cooler, the lubricating oil cooler and the control oil cooler of the electric blower set, so that the cooling requirement of the blast furnace electric blower set can be well met; and water and electric energy can be saved, and diffusion of low-temperature and low-pressure saturated steam is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a chilled water cooling system for a blast furnace electric blower unit. Background Art

[0002] In steel joint ventures, during the operation of blast furnace electric blower units, circulating cooling water is generally used to cool the motor air cooler, lubricating oil cooler, and control oil cooler. That is, the circulating water pump pressurizes the circulating water and sends it to the motor air cooler, lubricating oil cooler, and control oil cooler. After cooling, the higher temperature circulating water returns to the cooling tower for heat exchange with the air. The cooled circulating water returns to the circulating water pump, completing a cooling cycle.

[0003] During the heat exchange process between the circulating water and the air, dust in the air is also brought into the circulating water, so the circulating water quality is poor. The disadvantages of this cooling method are large water circulation volume and high power consumption.

[0004] Some imported motors require pure industrial water or domestic water as cooling water. The circulating water quality cannot meet the requirements, resulting in frequent blockage of the air cooler and poor cooling effect. The circulating water temperature is high during the high temperature period in summer and cannot fully meet the cooling requirements of the motor air cooler. If industrial water or domestic water is used, the cooling cost will be high.

[0005] On the one hand, iron and steel enterprises produce a large amount of low-temperature, low-pressure saturated steam as a by-product. However, due to its low quality, it has few users and small usage. Especially in the summer, this low-temperature, low-pressure saturated steam is often released in large quantities, necessitating the development of new users. On the other hand, lithium bromide chillers, which utilize low-quality steam as thermal energy, can produce chilled water at a temperature of 10-15°C. During the chilled water production process, the chilled water does not come into contact with other media, ensuring stable water quality. Furthermore, the chilled water is circulated in a closed loop between the cooling object and the lithium bromide chiller, resulting in low water consumption. Utility Model Content

[0006] The purpose of the utility model is to provide a chilled water cooling system for a blast furnace electric blower unit to solve the problems raised in the above background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A chilled water cooling system for a blast furnace electric blower unit comprises: a lithium bromide refrigerator, an air-water cooler, a lubricating oil cooler, and a control oil cooler; a low-level, low-pressure saturated steam interface of the lithium bromide refrigerator is connected to the excess saturated steam discharge end of a steel production line; and a refrigeration output end of the lithium bromide refrigerator is respectively connected to the air-water cooler, the lubricating oil cooler, and the control oil cooler to provide a cold source for the air-water cooler, the lubricating oil cooler, and the control oil cooler.

[0009] As a further solution of the present invention: the low-level low-pressure saturated steam interface of the lithium bromide refrigerator is connected to the low-temperature low-pressure saturated steam pipeline, and a steam valve is provided on the low-temperature low-pressure saturated steam pipeline.

[0010] As a further solution of the present invention: the steam condensate discharge end of the lithium bromide refrigerator is connected to the condensate pool through a condensate pipe and a condensate valve.

[0011] As a further solution of the present invention: the low-temperature chilled water interface of the lithium bromide refrigerator is connected to the input end of the chilled water pump through the chilled water pump inlet pipe and the chilled water pump inlet valve, and the output end of the chilled water pump is connected to the chilled water pump outlet pipe, the chilled water pump outlet valve and the chilled water inlet main pipe at one time.

[0012] As a further solution of the present invention: the chilled water inlet main pipe is connected in sequence to the air-water cooler inlet pipe, the air-water cooler inlet valve and the cold source input port of the air-water cooler.

[0013] As a further solution of the present invention: the chilled water inlet main pipe is connected to the cold source input port of the lubricating oil cooler through the lubricating oil cooler inlet pipe and the lubricating oil cooler inlet valve in sequence.

[0014] As a further solution of the present invention: the chilled water inlet main pipe is also connected to the cold source input port of the control oil cooler through the control oil cooler inlet pipe and the control oil cooler inlet valve in sequence; the chilled water discharge end of the control oil cooler is connected to the chilled water outlet main pipe through the control oil cooler outlet pipe and the control oil cooler outlet valve.

[0015] As a further solution of the present invention: the chilled water outlet main pipe is connected to the water source input port of the lithium bromide refrigerator.

[0016] As a further solution of the present invention: it also includes a desalted water tank, the input end of the desalted water tank is connected to a desalted water supply pipe, and the desalted water supply pipe is provided with a desalted water supply valve.

[0017] As a further solution of the present invention: the outlet of the desalted water tank is connected to a desalted water tank outlet pipe, a desalted water tank outlet pipe is provided with a desalted water tank outlet valve, and the desalted water tank outlet valve is connected to the chilled water pump inlet pipe of the lithium bromide refrigerator.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention utilizes the surplus saturated steam of the steel joint enterprise to provide heat energy for the lithium bromide refrigerator, and the lithium bromide refrigerator extracts chilled water to meet the cooling needs of the motor air cooler, lubricating oil cooler, and control oil cooler of the electric blower unit, which can not only well meet the cooling requirements of the blast furnace electric blower unit, but also save water, save electricity and reduce the emission of low-temperature and low-pressure saturated steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a chilled water cooling system for a blast furnace electric blower unit according to an embodiment of the present utility model.

[0020] In the figure: 1-lithium bromide refrigerator, 2-low-temperature low-pressure saturated steam pipeline, 3-steam valve, 4-condensate pipeline, 5-condensate valve, 6-condensate tank, 7-chilled water pump inlet pipeline, 8-chilled water pump inlet valve, 9-chilled water pump, 10-chilled water pump outlet pipeline, 11-chilled water pump outlet valve, 12-chilled water inlet main pipe, 13-air-water cooler inlet pipeline, 14-air-water cooler inlet valve, 15-air-water cooler, 16-air-water cooler outlet pipeline, 17-air-water cooler outlet valve, 18-chilled water outlet main pipe, 19-lubricating oil cooler inlet pipeline, 20-lubricating oil cooler inlet valve, 21-lubricating oil cooler, 22-lubricating oil cooler outlet pipeline, 23-lubricating oil cooler outlet valve, 24-control oil cooler inlet Pipeline, 25-Control Oil Cooler Inlet Valve, 26-Control Oil Cooler, 27-Control Oil Cooler Outlet Pipe, 28-Control Oil Cooler Outlet Valve, 29-Desalted Water Makeup Pipe, 30-Desalted Water Makeup Valve, 31-Desalted Water Tank, 32-Desalted Water Tank Outlet Pipe, 33-Desalted Water Tank Outlet Valve, 34-Desalted Water Tank Drain Pipe, 35-Desalted Water Tank Drain Valve, 36-Chilled Water Jelly Pipe Drain Pipe, 37-Chilled Water Jelly Pipe Drain Valve, 38-High-Temperature Circulating Water Pipe, 39-Cooling Water Tower, 40-Circulating Water Pump Inlet Pipe, 41-Circulating Water Pump Inlet Valve, 42-Circulating Water Pump, 43-Circulating Water Pump Outlet Pipe, 44-Industrial Water Makeup Pipe, 45-Industrial Water Makeup Valve, 46-Circulating Water Drain Pipe, 47-Circulating Water Drain Valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1 , Example 1 of the present invention provides a structural diagram of a chilled water cooling system for a blast furnace electric blower unit, wherein the chilled water cooling system for the blast furnace electric blower unit includes: a lithium bromide refrigerator 1, an air-water cooler 15, a lubricating oil cooler 21 and a control oil cooler 26; the low-level low-pressure saturated steam interface of the lithium bromide refrigerator 1 is connected to the surplus saturated steam discharge end of the steel production line; the cooling output end of the lithium bromide refrigerator 1 is respectively connected to the air-water cooler 15, the lubricating oil cooler 21 and the control oil cooler 26, providing a cold source for the air-water cooler 15, the lubricating oil cooler 21 and the control oil cooler 26.

[0024] In some embodiments, the low-level, low-pressure, saturated steam interface of the lithium bromide refrigerator 1 is connected to a low-temperature, low-pressure, saturated steam pipe 2, which is provided with a steam valve 3. The low-temperature, low-pressure, saturated steam pipe 2 and the steam valve 3 provide low-temperature, low-pressure, saturated steam to the lithium bromide refrigerator 1 to produce low-temperature chilled water from the high-temperature chilled water after heat exchange.

[0025] In some embodiments, the steam condensate discharge end of the lithium bromide refrigerator 1 is connected to a condensate pool 6 through a condensate pipe 4 and a condensate valve 5 for collecting the steam condensate.

[0026] In some embodiments, the low-temperature chilled water interface of the lithium bromide refrigerator 1 is connected to the input end of the chilled water pump 9 through the chilled water pump inlet pipe 7 and the chilled water pump inlet valve 8. The output end of the chilled water pump 9 is connected to the chilled water pump outlet pipe 10, the chilled water pump outlet valve 11 and the chilled water inlet main pipe 12. The chilled water pump 9 is used to pressurize the chilled water.

[0027] In some embodiments, the chilled water inlet main pipe 12 is connected to the air-water cooler inlet pipe 13, the air-water cooler inlet valve 14 and the cold source input port of the air-water cooler 15 in sequence, providing a cold source for the air-water cooler 15.

[0028] In some embodiments, the chilled water inlet main pipe 12 is connected to the cold source input port of the lubricating oil cooler 21 via the lubricating oil cooler inlet pipe 19 and the lubricating oil cooler inlet valve 20, providing a cold source for the lubricating oil cooler 21. The chilled water discharge end of the lubricating oil cooler 21 is connected to the chilled water outlet main pipe 18 via the lubricating oil cooler outlet pipe 22 and the lubricating oil cooler outlet valve 23, facilitating chilled water recovery.

[0029] In some embodiments, the chilled water inlet main pipe 12 further communicates with the cold source input port of the control oil cooler 26 through the control oil cooler inlet pipe 24 and the control oil cooler inlet valve 25, thereby providing a cold source for the control oil cooler 26. The chilled water discharge end of the control oil cooler 26 is connected to the chilled water outlet main pipe 18 through the control oil cooler outlet pipe 27 and the control oil cooler outlet valve 28. The chilled water passes through the control oil cooler outlet pipe 27 and the control oil cooler outlet valve 28 and is recovered by the chilled water outlet main pipe 18.

[0030] In some embodiments, the chilled water outlet main pipe 18 is connected to the water source input port of the lithium bromide refrigerator 1, and the chilled water outlet main pipe 18 is used to input high-temperature chilled water into the lithium bromide refrigerator 1 to produce low-temperature chilled water.

[0031] The present invention also includes a desalted water tank 31 , the input end of which is connected to a desalted water supply pipe 29 , and a desalted water supply valve 30 is provided on the desalted water supply pipe 29 , and the desalted water enters the desalted water tank 31 through the desalted water supply pipe 29 and the desalted water supply valve 30 .

[0032] In some embodiments, the outlet of the desalted water tank 31 is connected to a desalted water tank outlet pipe 32, and a desalted water tank outlet valve 33 is provided on the desalted water tank outlet pipe 32. The desalted water tank outlet valve 33 is connected to the chilled water pump inlet pipe 7 on the lithium bromide refrigeration machine 1 to replenish the loss of circulating chilled water.

[0033] In some embodiments, a desalted water tank drain valve 35 and a desalted water tank drain pipe 34 are provided on the desalted water tank outlet pipe 32 . The desalted water tank drain pipe 34 and the desalted water tank drain valve 35 are provided to facilitate regular discharge of dirt from the desalted water tank 31 .

[0034] In some embodiments, the chilled water inlet main pipe 12 is provided with a chilled water main pipe drain valve 37 and a chilled water main pipe drain pipe 36. The chilled water main pipe drain pipe 36 and the chilled water main pipe drain valve 37 are provided to facilitate regular discharge of dirt from the chilled water inlet main pipe 12.

[0035] In some embodiments, the high-temperature circulating water outlet of the lithium bromide refrigerator 1 is connected to the input end of a cooling water tower 39 via a high-temperature circulating water pipe 38. The cooling water outlet of the cooling water tower 39 is connected to the cooling circulating water input port of the lithium bromide refrigerator 1 via a circulating water pump inlet pipe 40, a circulating water pump inlet valve 41, a circulating water pump 42, and a circulating water pump outlet pipe 43. In this way, the cooling water tower 39 provides circulating water for the lithium bromide refrigerator 1.

[0036] In some embodiments, in order to replenish circulating water for the cooling water tower 39, an industrial water replenishment pipe 44 is also connected to the cooling water tower 39, and an industrial water replenishment valve 45 is provided on the industrial water replenishment pipe 44. The industrial water replenishment pipe 44 is provided to facilitate replenishing circulating water for the cooling water tower 39.

[0037] In some embodiments, a circulating water drain pipe 46 is provided at the bottom of the cooling water tower 39, and a circulating water drain valve 47 is provided on the circulating water drain pipe 46. The circulating water drain pipe 46 and the circulating water drain valve 47 are provided to facilitate regular drainage of the cooling water tower 39.

[0038] The lithium bromide refrigerator 1 of the present invention utilizes the excess saturated steam of the steel plant equipment to provide heat energy for the lithium bromide refrigerator 1, so that the lithium bromide refrigerator 1 can provide cooling needs for the air-water cooler 15, the lubricating oil cooler 21 and the control oil cooler 26, which can not only well meet the cooling requirements of the blast furnace electric blower unit, but also save water, save electricity and reduce the emission of low-temperature and low-pressure saturated steam.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0041] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A chilled water cooling system for a blast furnace electric blower unit, characterized in that: include: A lithium bromide refrigerator (1), an air-water cooler (15), a lubricating oil cooler (21), and a control oil cooler (26); a low-level, low-pressure saturated steam interface of the lithium bromide refrigerator (1) is connected to the excess saturated steam discharge end of the steel production line; a refrigeration output end of the lithium bromide refrigerator (1) is respectively connected to the air-water cooler (15), the lubricating oil cooler (21), and the control oil cooler (26), providing a cold source for the air-water cooler (15), the lubricating oil cooler (21), and the control oil cooler (26).

2. A chilled water cooling system for a blast furnace electric blower unit according to claim 1, characterized in that: The low-level, low-pressure, saturated steam interface of the lithium bromide refrigerator (1) is connected to a low-temperature, low-pressure, saturated steam pipeline (2), and a steam valve (3) is provided on the low-temperature, low-pressure, saturated steam pipeline (2).

3. A chilled water cooling system for a blast furnace electric blower unit according to claim 1, characterized in that: The steam condensate discharge end of the lithium bromide refrigerator (1) is connected to the condensate pool (6) through a condensate pipe (4) and a condensate valve (5).

4. A chilled water cooling system for a blast furnace electric blower unit according to claim 1, characterized in that: The low-temperature chilled water interface of the lithium bromide refrigerator (1) is connected to the input end of the chilled water pump (9) through the chilled water pump inlet pipe (7) and the chilled water pump inlet valve (8), and the output end of the chilled water pump (9) is connected to the chilled water pump outlet pipe (10), the chilled water pump outlet valve (11) and the chilled water inlet main pipe (12).

5. A chilled water cooling system for a blast furnace electric blower unit according to claim 4, characterized in that: The chilled water inlet main pipe (12) is connected in sequence to the air-water cooler inlet pipe (13), the air-water cooler inlet valve (14) and the cold source input port of the air-water cooler (15).

6. A chilled water cooling system for a blast furnace electric blower unit according to claim 5, characterized in that: The chilled water inlet main pipe (12) is connected to the cold source input port of the lubricating oil cooler (21) through the lubricating oil cooler inlet pipe (19) and the lubricating oil cooler inlet valve (20) in sequence.

7. A chilled water cooling system for a blast furnace electric blower unit according to claim 6, characterized in that: The chilled water inlet main pipe (12) is also connected to the cold source input port of the control oil cooler (26) through the control oil cooler inlet pipe (24) and the control oil cooler inlet valve (25) in sequence; the chilled water discharge end of the control oil cooler (26) is connected to the chilled water outlet main pipe (18) through the control oil cooler outlet pipe (27) and the control oil cooler outlet valve (28).

8. The chilled water cooling system for a blast furnace electric blower unit according to claim 7, characterized in that: The chilled water outlet main pipe (18) is connected to the water source input port of the lithium bromide refrigerator (1).

9. The chilled water cooling system for a blast furnace electric blower unit according to claim 4, characterized in that: It also includes a desalted water tank (31), the input end of the desalted water tank (31) is connected to a desalted water replenishment pipe (29), and a desalted water replenishment valve (30) is provided on the desalted water replenishment pipe (29).

10. A chilled water cooling system for a blast furnace electric blower unit according to claim 9, characterized in that: The outlet of the desalted water tank (31) is connected to a desalted water tank outlet pipe (32), a desalted water tank outlet pipe (32) is provided with a desalted water tank outlet valve (33), and the desalted water tank outlet valve (33) is connected to a chilled water pump inlet pipe (7) on the lithium bromide refrigerator (1).

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