Communicating device for water softening system

Abstract

The utility model discloses a communication device for a soft water system, which comprises a medium-pressure system, the medium-pressure system comprises a medium-pressure water return main pipe, a medium-pressure water supply pipe and two medium-pressure water supply branches, and the two medium-pressure water supply branches are connected in parallel between the medium-pressure water return main pipe and the medium-pressure water supply pipe; the high-pressure system comprises a high-pressure water return main pipe, a high-pressure water supply pipe and three high-pressure water supply branches, and the three high-pressure water supply branches are connected between the high-pressure water return main pipe and the high-pressure water supply pipe in parallel; a regulating valve is arranged on the connecting pipe; the medium-pressure water supply pipe and the high-pressure water supply pipe are communicated through the connecting pipe. The device is used for regulating water supply flow during blow-in, and energy conservation and consumption reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the field of steel production, in particular to a connecting device for a soft water system. Background Art

[0002] Modern blast furnace cooling adopts soft water combined with closed circulation system. The system is generally divided into three subsystems: normal pressure system, medium pressure system and high pressure system. The normal pressure system mainly supplies water to the cooling wall of the blast furnace; the medium pressure system mainly supplies water to the middle sleeve of the blast furnace tuyere and the valve of the hot blast furnace; the high pressure system supplies water to the small sleeve of the blast furnace tuyere. The water supply pump of the normal pressure system is two for one standby; the water supply pumps of the medium and high pressure systems are one for one standby. When a new blast furnace starts to dry, only 1 / 2 of the water volume in normal production is needed. The purpose is to prevent a large amount of heat loss. Then, when drying the furnace, only two water pumps are needed for the three subsystems. However, if two water pumps are turned on for the three systems, one system will inevitably fail to supply water. Therefore, in order to ensure the effective operation of the three subsystems, three water supply pumps must be turned on (one for each subsystem), so that the amount of water can reach 3 / 4-2 / 3 of the water volume in normal production. Such amount of water will cause excessive heat loss in the blast furnace, affect the effect of drying the furnace, and prolong the time of drying the furnace. Utility Model Content

[0003] The utility model aims to provide a connecting device for a soft water system, which is used for regulating the water supply flow when the furnace is turned on, so as to save energy and reduce consumption.

[0004] A connecting device for a soft water system, comprising: a medium-pressure system, the medium-pressure system comprising a medium-pressure return water main, a medium-pressure water supply pipe, and two medium-pressure water supply branches, the two medium-pressure water supply branches are connected in parallel between the medium-pressure return water main and the medium-pressure water supply pipe; a high-pressure system, the high-pressure system comprising a high-pressure return water main, a high-pressure water supply pipe, and three high-pressure water supply branches, the three high-pressure water supply branches are connected in parallel between the high-pressure return water main and the high-pressure water supply pipe; a connecting pipe, the connecting pipe is provided with a regulating valve; wherein the connecting pipe connects the medium-pressure water supply pipe with the high-pressure water supply pipe.

[0005] In one of the embodiments, the medium-pressure water supply pipe is provided with a medium-pressure water supply valve, and the connecting pipe is connected to the medium-pressure water supply pipe downstream of the medium-pressure water supply valve.

[0006] In one of the embodiments, the high-pressure water supply pipe is provided with a high-pressure water supply valve, and the connecting pipe is connected to the high-pressure water supply pipe downstream of the high-pressure water supply valve.

[0007] In one of the embodiments, the connecting pipe is provided with two regulating valves, one of which is a manual butterfly valve, and the other is an electric butterfly valve.

[0008] In one of the embodiments, the manual butterfly valve is closer to the medium-pressure water supply pipe than the electric butterfly valve.

[0009] Compared with the prior art, the advantages of the connecting device for a soft water system of the utility model are:

[0010] 1. The present invention installs a connecting pipe on the water supply pipeline of the medium-pressure system and the high-pressure system. When the new blast furnace is started and baked, the medium- and high-pressure water supply systems only need to start one medium-pressure water pump to ensure the low-water supply operation of the cooling equipment of the two subsystems of the medium and high-pressure. The normal pressure system only needs to start one water supply pump to meet the low-water supply operation of the cooling equipment of the system. It effectively shortens the time for starting and baking the new blast furnace.

[0011] 2. During normal production, the two water supply pumps of the normal pressure system in the three subsystems of the blast furnace soft water system are powered by different circuits, and the two water supply pumps of the medium and high pressure are also powered by different circuits. When one power supply is interrupted, quickly opening the regulating valve of the connecting pipe can ensure that the small and medium sleeves and hot air valves of the blast furnace tuyere are not burned out.

[0012] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of a medium voltage system in an embodiment of the utility model;

[0015] Figure 2 A schematic diagram of a high voltage system according to an embodiment of the present utility model;

[0016] Figure 3 It is a structural schematic diagram of a connecting device for a soft water system according to an embodiment of the utility model.

[0017] Among them, 10, medium-pressure system, 11, medium-pressure return water main, 12, medium-pressure water supply branch, 13, medium-pressure water supply pipe, 14, medium-pressure butterfly valve, 15, medium-pressure water pump, 16, medium-pressure check valve, 17, medium-pressure branch valve, 18, medium-pressure water supply valve, 20, high-pressure system, 21, high-pressure return water main, 22, high-pressure water supply branch, 23, high-pressure water supply pipe, 24, high-pressure butterfly valve, 25, high-pressure water pump, 26, high-pressure check valve, 27, high-pressure branch valve, 28, high-pressure water supply valve, 30, connecting pipe, 31a, 31b, regulating valve. DETAILED DESCRIPTION

[0018] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figures 1 to 3As shown, the utility model is used for the interconnection device of the soft water system, comprising: a medium-pressure system 10, the medium-pressure system 10 comprises a medium-pressure return water main pipe 11, a medium-pressure water supply pipe 13, and two medium-pressure water supply branches 12, the two medium-pressure water supply branches 12 are connected in parallel between the medium-pressure return water main pipe 11 and the medium-pressure water supply pipe 13; the medium-pressure water supply branch 12 is provided with a medium-pressure butterfly valve 14, a medium-pressure water pump 15, a medium-pressure check valve 16, and a medium-pressure water branch valve 17 from upstream to downstream; a high-pressure system 20, the high-pressure system 20 It includes a high-pressure return water main 21, a high-pressure water supply pipe 23, and three high-pressure water supply branches 22. The three high-pressure water supply branches 22 are connected in parallel between the high-pressure return water main 21 and the high-pressure water supply pipe 23; the high-pressure water supply branch 22 is provided with a high-pressure butterfly valve 24, a high-pressure water pump 25, a high-pressure check valve 26, and a high-pressure branch valve 27 from upstream to downstream; a connecting pipe 30, on which regulating valves 31a and 31b are provided; wherein the connecting pipe 30 connects the medium-pressure water supply pipe 13 and the high-pressure water supply pipe 23.

[0022] The present invention installs a connecting pipe 30 on the water supply pipelines of the medium-pressure system 10 and the high-pressure system 20. When a new blast furnace is started and heated, the medium-pressure system 10 and the high-pressure system 20 only need to start one medium-pressure water pump 15 to ensure low-water supply operation of the cooling equipment of the medium-pressure and high-pressure subsystems, and the normal-pressure system only needs to start one water supply pump to meet the low-water supply operation of the cooling equipment of the system. This effectively shortens the time for starting and heating the new blast furnace.

[0023] Moreover, during normal production, the two water pumps of the normal pressure system in the three subsystems of the blast furnace soft water system are powered by different circuits respectively, and the two medium-pressure water pumps 15 of the medium-pressure system 10 and the three high-pressure water pumps 25 of the high-pressure system 20 are also powered by different circuits. When one power supply is tripped, quickly opening the regulating valves 31a and 31b of the connecting pipe 30 can ensure that the small sleeves and hot air valves in the blast furnace tuyere are not burned out.

[0024] The medium-pressure water supply pipe 13 is provided with a medium-pressure water supply valve 18 , and the connecting pipe 30 is connected to the medium-pressure water supply pipe 13 downstream of the medium-pressure water supply valve 18 , so that the medium-pressure water supply valve 18 can still cut off the water supply of the medium-pressure water supply pipe 13 .

[0025] The high-pressure water supply pipe 23 is provided with a high-pressure water supply valve 28 , and the connecting pipe 30 is connected to the high-pressure water supply pipe 23 downstream of the high-pressure water supply valve 28 , so that the high-pressure water supply valve 28 can still cut off the water supply of the high-pressure water supply pipe 23 .

[0026] The connecting pipe 30 is provided with two regulating valves 31a and 31b, one of which is a manual butterfly valve and the other is an electric butterfly valve. The two regulating valves 31a and 31b are redundantly provided to ensure one for use and one for backup, and one for manual and one for electric. The electric valve is convenient for automatic control, and the manual valve can ensure the effective opening or closing of the connecting pipe 30.

[0027] The manual butterfly valve is closer to the medium-pressure water supply pipe 13 than the electric butterfly valve. When the furnace is opened and the furnace is baked, the medium-pressure system 10 is used to supply water. At this time, the medium-pressure pump in a medium-pressure water supply branch 12 is turned on, and the high-pressure system 20 is suspended. In the direction of water flow, the manual butterfly valve is upstream of the electric butterfly valve, which can more reliably control the opening or closing of the connecting pipe 30.

[0028] The utility model has strong versatility and is easy to manufacture. The manufacturing requirements are low and the material requirements are not high. After the connecting pipe 30 is set, the operation and maintenance of the connecting pipe 30 are simple, and no special operation is required. It is only necessary to refer to the data displayed by the main flow meter and adjust it according to the requirements. Compared with the main valve, the modified regulating valves 31a and 31b are smaller and easier to operate; after the maintenance personnel have finished manufacturing the connecting pipe 30, they can weld and assemble it. The installation process is simple and time-consuming. The device is also easy to maintain and is very suitable for upgrading and transforming existing equipment.

[0029] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A communication device for a soft water system, characterized in that: include: A medium-pressure system, the medium-pressure system comprising a medium-pressure water return pipe, a medium-pressure water supply pipe, and two medium-pressure water supply branches, wherein the two medium-pressure water supply branches are connected in parallel between the medium-pressure water return pipe and the medium-pressure water supply pipe; A high-pressure system, the high-pressure system comprising a high-pressure water return pipe, a high-pressure water supply pipe, and three high-pressure water supply branches, wherein the three high-pressure water supply branches are connected in parallel between the high-pressure water return pipe and the high-pressure water supply pipe; A connecting pipe, wherein a regulating valve is provided on the connecting pipe; Wherein, the connecting pipe connects the medium-pressure water supply pipe and the high-pressure water supply pipe.

2. A connecting device for a soft water system according to claim 1, characterized in that: The medium-pressure water supply pipe is provided with a medium-pressure water supply valve, and the connecting pipe is connected with the medium-pressure water supply pipe downstream of the medium-pressure water supply valve.

3. A connecting device for a soft water system according to claim 1, characterized in that: The high-pressure water supply pipe is provided with a high-pressure water supply valve, and the connecting pipe is connected with the high-pressure water supply pipe downstream of the high-pressure water supply valve.

4. A connecting device for a soft water system according to any one of claims 1 to 3, characterized in that: The connecting pipe is provided with two regulating valves, one of which is a manual butterfly valve and the other is an electric butterfly valve.

5. A connecting device for a soft water system according to claim 4, characterized in that: The manual butterfly valve is closer to the medium-pressure water supply pipe than the electric butterfly valve.

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