CN211041928U - Back-flushing type cooling device - Google Patents

Abstract

The utility model belongs to the field of metal smelting cooling equipment, in particular to a back-flushing type cooling device, which comprises a clean ring water tank, a cooling system I and a cooling system II, wherein the cooling system I and the cooling system II have the same structure; when one of the two cooling systems is started, the other cooling system is used as a standby; the water purification and circulation tank comprises a main water inlet pipeline and a main water outlet pipeline; the cooling system comprises a cooler, and the cooler is provided with a water inlet pipe communicated with the main water inlet pipeline and a water outlet pipe communicated with the main water outlet pipeline; an inlet valve is arranged on the water inlet pipe; an outlet valve is arranged on the water outlet pipe; a back washing pipeline is arranged on each of the two cooling systems; one end of the back flushing pipeline is communicated with the clean ring water tank, and the other end of the back flushing pipeline is communicated with a water inlet pipe at the downstream of the inlet valve; a water discharge valve and a backwashing pump are arranged on the backwashing pipeline; the backwashing pump is arranged at the downstream of the water discharge valve. The utility model discloses a back flush formula cooling device can reduce lubricating oil tank temperature, improves the lubrication of unit, also can prolong the life of fan unit bearing.

Description

Back-flushing type cooling device

Technical Field

The utility model relates to a metal smelting cooling arrangement field, concretely relates to back flush formula cooling device.

Background

In the technical field of metal smelting, a blast furnace is a common smelting device; the plate cooler of the lubricating oil station is important equipment of a blast furnace lubricating oil cooling system, and because cooling water is open-circuit circulating water, the long-time use can cause filler shedding and excessive sludge, and the plate cooler is easy to block after long-time operation. After the blockage, the cooling effect of the cooler can be gradually reduced, the temperature of the unit bearing is increased, the service life of the unit bearing is shortened, and the unit parking accident can be caused when the cooler is switched in the online operation mode seriously. The blower is stopped, so that the major accident of slag pouring of the blast furnace is caused, and the production of the blast furnace is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a back-flushing type cooling device aiming at the technical problems in the prior art; the cooler avoids the occurrence of fan shutdown accidents by introducing the back washing device, reduces the temperature of the lubricating oil tank, improves the lubrication of the unit and prolongs the service life of the bearing of the fan unit.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a back-flushing type cooling device comprises a clean ring water tank, a cooling system I and a cooling system II, wherein the cooling system I and the cooling system II are identical in structure; when one of the two cooling systems is started, the other cooling system is used as a standby;

the clean ring water tank comprises a main water inlet pipeline and a main water outlet pipeline; the first cooling system comprises a first cooler, and the first cooler is provided with a first water inlet pipe communicated with the main water inlet pipeline and a first water outlet pipe communicated with the main water outlet pipeline; an inlet valve I is arranged on the water inlet pipe I; an outlet valve I is arranged on the first water outlet pipe;

the second cooling system comprises a second cooler, and the second cooler is provided with a second water inlet pipe communicated with the main water inlet pipeline and a second water outlet pipe communicated with the main water outlet pipeline; an inlet valve II is arranged on the water inlet pipe II; an outlet valve II is arranged on the water outlet pipe II;

a back washing pipeline is arranged on each of the two cooling systems; one end of the back flushing pipeline is communicated with the clean ring water tank, and the other end of the back flushing pipeline is communicated with a first water inlet pipe or a second water inlet pipe at the downstream of the inlet valve;

a water discharge valve and a backwashing pump are arranged on the backwashing pipeline; the backwashing pump is arranged at the downstream of the water discharge valve.

The utility model has the advantages and positive effects that:

the back-flushing cooling device of the utility model can reduce the temperature of the lubricating oil tank, improve the lubrication of the unit and prolong the service life of the bearing of the fan unit; more importantly, the occurrence of a fan shutdown accident and a blast furnace slag pouring major accident can be avoided, and the method has very important significance.

Description of the drawings:

FIG. 1 is a schematic view of a backwash assembly in a preferred embodiment of the present invention;

wherein: 1. a clean ring water tank; 2. a main water inlet pipeline; 3. a main water outlet pipeline; 4. a first cooler; 5. a first water inlet pipe; 6. a first water outlet pipe; 7. an inlet valve I; 8. an outlet valve I; 9. a second cooler; 10. a water inlet pipe II; 11. a water outlet pipe II; 12. an inlet valve II; 13. an outlet valve II; 14. switching pipelines; 15. switching the head; 16. back flushing the pipeline; 17. a water drain valve; 18. and (4) backwashing the pump.

Detailed Description

For further understanding of the contents, features and functions of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings as follows:

as shown in fig. 1, the utility model discloses a back-flushing type cooling device, which comprises a clean ring water tank 1, a first cooling system and a second cooling system, wherein the first cooling system and the second cooling system have the same structure; the cooling system I and the cooling system II are used as cooling devices of a blast furnace lubricating oil system, wherein one cooling system is in operation, and the other cooling system is used for standby; the two cooling systems work in turn, so that the service life of the cooler is prolonged, and the refrigeration effect is ensured.

The clean circular water tank 1 comprises a main water inlet pipeline 2 and a main water outlet pipeline 3; the cooling system comprises a cooler I4, and the cooler I4 is provided with a water inlet pipe I5 communicated with the main water inlet pipeline and a water outlet pipe I6 communicated with the main water outlet pipeline; an inlet valve I7 is arranged on the water inlet pipe I5; an outlet valve I8 is arranged on the water outlet pipe I6;

the second cooling system comprises a second cooler 9, and the second cooler 9 is provided with a second water inlet pipe 10 communicated with the main water inlet pipeline and a second water outlet pipe 11 communicated with the main water outlet pipeline; an inlet valve II 12 is arranged on the water inlet pipe II 10; an outlet valve II 13 is arranged on the water outlet pipe II 11;

the first water inlet pipe 5 is connected with the second water inlet pipe 10 in parallel, the first water outlet pipe 6 is connected with the second water outlet pipe 11 in parallel, a switching pipeline 14 is arranged between the first water inlet pipe 5 and the second water inlet pipe 10, and a switching head 15 is arranged on the switching pipeline 14.

A back-flushing pipeline 16 is arranged on each of the two cooling systems; taking a cooling system as an example, one end of the back flushing pipeline 16 is communicated with the clean ring water tank 1, and the other end is communicated with a water inlet pipe one 5 at the downstream of an inlet valve one 7;

a drain valve 17 and a backwashing pump 18 are arranged on the backwashing pipeline 16; the backwashing pump 18 is arranged at the downstream of the drain valve 17, so that the backwashing pump 18 can clean the sewage passing through the drain valve 17.

Preferably, the valve of the present invention is a butterfly valve or a gate valve in the prior art.

The working principle is as follows:

taking the first cooler 4 as an example, and the second cooler 9 as an example: when the cooling system works, once the temperature of the lubricating oil of the blast furnace lubricating oil cooling system is continuously increased, the fact that the filler in the cooler falls off and the sludge is too much proves, and the cooler I4 is likely to be blocked; at the moment, a drain valve 17 on the first cooling system is opened, a first inlet valve 7 is closed, a backwashing pump 18 is started, the first cooler 4 can be quickly backwashed, high-temperature water in the first cooler 4 is pumped back to a clean water returning tank for cooling, then blockages in the first cooler 4 are removed, after backwashing is finished, the backwashing pump 18 is closed, the first inlet valve 7 is opened again, and the drain valve 17 is closed, so that backwashing of the first cooler 4 is completed.

When the cooling system II needs to be started, the conversion head is started, and the cooling system becomes standby; when the cooling system II works, once the temperature of the lubricating oil of the blast furnace lubricating oil cooling system is continuously increased, the fact that the filler in the plate cooler falls off and the sludge is too much proves, and the cooler II 9 is likely to be blocked; and at the moment, opening a drain valve 17 on the second cooling system, closing the second inlet valve 12, starting a backwashing pump 18, quickly backwashing the second cooler 9, pumping high-temperature water in the second cooler 9 back to a clean water returning tank for cooling, removing the blockage in the second cooler 9, closing the backwashing pump 18 after backwashing is finished, opening the second inlet valve 12, and closing the drain valve 17 to finish backwashing of the second cooler 9.

The embodiments of the present invention have been described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (1)

1. A backwash cooling device characterized by: the device comprises a clean ring water tank, a cooling system I and a cooling system II which have the same structure; when one of the two cooling systems is started, the other cooling system is used as a standby;

the clean ring water tank comprises a main water inlet pipeline and a main water outlet pipeline; the first cooling system comprises a first cooler, and the first cooler is provided with a first water inlet pipe communicated with the main water inlet pipeline and a first water outlet pipe communicated with the main water outlet pipeline; an inlet valve I is arranged on the water inlet pipe I; an outlet valve I is arranged on the first water outlet pipe;

the second cooling system comprises a second cooler, and the second cooler is provided with a second water inlet pipe communicated with the main water inlet pipeline and a second water outlet pipe communicated with the main water outlet pipeline; an inlet valve II is arranged on the water inlet pipe II; an outlet valve II is arranged on the water outlet pipe II;

a back washing pipeline is arranged on each of the two cooling systems; one end of the back flushing pipeline is communicated with the clean ring water tank, and the other end of the back flushing pipeline is communicated with a first water inlet pipe or a second water inlet pipe at the downstream of the inlet valve;

a water discharge valve and a backwashing pump are arranged on the backwashing pipeline; the backwashing pump is arranged at the downstream of the water discharge valve.

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