CN213088392U - Improved rolling mill hydraulic oil circulating filtering cooling system - Google Patents
Improved rolling mill hydraulic oil circulating filtering cooling system Download PDFInfo
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- CN213088392U CN213088392U CN202020697559.5U CN202020697559U CN213088392U CN 213088392 U CN213088392 U CN 213088392U CN 202020697559 U CN202020697559 U CN 202020697559U CN 213088392 U CN213088392 U CN 213088392U
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 180
- 238000001816 cooling Methods 0.000 title claims abstract description 37
- 238000001914 filtration Methods 0.000 title claims abstract description 30
- 238000005096 rolling process Methods 0.000 title claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 239000000498 cooling water Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The utility model discloses an improved rolling mill hydraulic oil circulating filtration cooling system, which comprises a hydraulic pump, an oil tank, a hydraulic oil circulating filtration system, a hydraulic oil cooling system, a hydraulic oil filling system and a hydraulic oil discharging system; the hydraulic oil circulating and filtering system comprises a main hydraulic pump, a duplex switching filter, a hydraulic oil cooler and a main hydraulic oil tank, wherein a port P of the duplex switching filter is connected with the main hydraulic pump, a port T is connected with a port A of the hydraulic oil cooler, and a port B of the hydraulic oil cooler is connected with the main hydraulic oil tank; the hydraulic oil refueling system comprises an auxiliary hydraulic pump, a fine filter, an auxiliary hydraulic oil tank and a main hydraulic oil tank, wherein the auxiliary hydraulic pump is respectively connected with P ports of the auxiliary hydraulic oil tank and the fine filter, and a T port of the fine filter is connected with the main hydraulic oil tank; the hydraulic oil discharge system comprises a main hydraulic pump, an auxiliary hydraulic oil tank and a main hydraulic oil tank, wherein an oil inlet of the main hydraulic pump is connected with the main hydraulic oil tank, and an oil outlet of the main hydraulic pump is connected with the auxiliary hydraulic oil tank. The utility model discloses can realize changing profit filter core on line, reduce intensity of labour and maintenance cost.
Description
Technical Field
The utility model relates to a modified rolling mill hydraulic oil circulation filtration cooling system belongs to hydraulic control equipment technical field.
Background
The cold continuous rolling unit is an important component for processing steel coils, a high-pressure system of the rolling mill controls the actions of actuating mechanisms such as a pressing cylinder, a working roll bending cylinder, a middle roll shifting cylinder and a supporting roll balancing cylinder of each stand of the rolling mill, and the actuating mechanisms have the characteristics of large load, high control precision and high response speed and directly participate in plate thickness and plate shape control, so that the cold continuous rolling unit has an important function. Due to the particularity of a high-pressure hydraulic system of the rolling mill, higher requirements are put on the cleanliness and the temperature of hydraulic oil.
The traditional rolling mill hydraulic oil circulating cooling system is shown in figure 1 and mainly comprises a hydraulic pump, an oil tank, a hydraulic oil circulating filtering system, a hydraulic oil cooling system and a hydraulic oil refueling system; the hydraulic pump comprises a main hydraulic pump 2 and an auxiliary hydraulic pump 14, and the main hydraulic pump 2 and the auxiliary hydraulic pump 14 are used in parallel; the oil tank comprises a main hydraulic oil tank 1 and an auxiliary hydraulic oil tank 15, and the auxiliary hydraulic oil tank 15 is used for supplementing oil for the main hydraulic oil tank 1; the hydraulic oil circulating and filtering system comprises a main hydraulic pump 2, a high-pressure filter 7, a hydraulic oil cooler 8 and a main hydraulic oil tank 1, wherein a port P of the high-pressure filter 7 is connected with the main hydraulic pump 2, a port T is connected with a port A of the hydraulic oil cooler 8, and a port B of the hydraulic oil cooler 8 is connected with the main hydraulic oil tank 1; the hydraulic oil cooling system comprises a water filter 11, a two-position two-way reversing valve 10 and a hydraulic oil cooler 8, wherein an A port of the water filter 11 is connected with a water supply port of cooling water, a B port is connected with a P port of the two-position two-way reversing valve 10, the A port of the two-position two-way reversing valve 10 is connected with the P port of the hydraulic oil cooler 8, and a T port of the hydraulic oil cooler 8 is connected with a water return port of the cooling water; the hydraulic oil refueling system comprises an auxiliary hydraulic pump 14, a fine filter 13, a high-pressure filter 7, an auxiliary hydraulic oil tank 15 and a main hydraulic oil tank 1, wherein an oil inlet of the auxiliary hydraulic pump 14 is connected with the auxiliary hydraulic oil tank 15, an oil outlet of the auxiliary hydraulic oil tank is connected with a P port of the fine filter 13, a T port of the fine filter 13 is connected with the P port of the high-pressure filter 7, and a T port of the high-pressure filter 7 is connected with the main hydraulic oil tank 1.
When a filter element of a high-pressure filter 7 in the hydraulic oil circulating and filtering system needs to be replaced, the main hydraulic pump 2 needs to be shut down, and continuous filtering of hydraulic oil under the condition of no shutdown cannot be realized; when the filter element of the water filter 11 of the hydraulic oil cooling system needs to be replaced, cooling water needs to be shut down for replacement, and continuous cooling of hydraulic oil cannot be realized; the main hydraulic oil tank 1 in the hydraulic oil refueling system is arranged in an underground oil depot, the auxiliary hydraulic oil tank 15 is arranged on the ground, and people need to be sent to manually control the normally closed butterfly valve 12 and the normally open butterfly valve 6 underground each time the oil is replenished for the main hydraulic oil tank 1, so that the operation is complex, and time and labor are consumed; in addition, in actual production, the fine filter 13 can meet the requirement of the cleanliness of the hydraulic oil without passing through the high-pressure filter 7; on the other hand, the traditional circulating cooling system for the hydraulic oil of the rolling mill has no special oil discharge pipeline, the pump needs to be stopped for discharging oil every time, the pipeline is disassembled, and impurities are easy to enter the hydraulic system to pollute the oil.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a modified rolling mill hydraulic oil circulating filtration cooling system is provided, realizes changing the profit filter core on line, guarantees that hydraulic oil is clean, reduces intensity of labour and maintenance cost, improves the working property and the operating efficiency of cold tandem mill group.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an improved rolling mill hydraulic oil circulating filtering cooling system comprises a hydraulic pump, an oil tank, a hydraulic oil circulating filtering system, a hydraulic oil cooling system and a hydraulic oil refueling system, wherein the hydraulic oil cooling system comprises a water filter, a two-position two-way reversing valve and a hydraulic oil cooler, an A port of the water filter is connected with a water supply port of cooling water, a B port of the water filter is connected with a P port of the two-position two-way reversing valve, an A port of the two-position two-way reversing valve is connected with a P port of the hydraulic oil cooler, and a T port of the hydraulic oil cooler is connected with a water return port of the cooling; the improvement is as follows: the hydraulic oil drainage system is also included; the hydraulic oil circulating and filtering system comprises a main hydraulic pump, a duplex switching filter, a hydraulic oil cooler and a main hydraulic oil tank, wherein a port P of the duplex switching filter is connected with the main hydraulic pump, a port T is connected with a port A of the hydraulic oil cooler, and a port B of the hydraulic oil cooler is connected with the main hydraulic oil tank;
the hydraulic oil refueling system comprises an auxiliary hydraulic pump, a fine filter, an auxiliary hydraulic oil tank and a main hydraulic oil tank, wherein the auxiliary hydraulic pump is respectively connected with P ports of the auxiliary hydraulic oil tank and the fine filter, and a T port of the fine filter is connected with the main hydraulic oil tank;
the hydraulic oil discharge system comprises a main hydraulic pump, an auxiliary hydraulic oil tank and a main hydraulic oil tank, wherein an oil inlet of the main hydraulic pump is connected with the main hydraulic oil tank, and an oil outlet of the main hydraulic pump is connected with the auxiliary hydraulic oil tank.
In the improved rolling mill hydraulic oil circulating filtering cooling system, the pipeline between the hydraulic oil cooler and the main hydraulic oil tank is provided with the one-way valve; a safety valve is arranged on a pipeline between an oil outlet of the main hydraulic pump and the main hydraulic oil tank; a pressure gauge, a backpressure valve and a normally open butterfly valve are arranged between the main hydraulic pump and the duplex switching filter.
In the improved rolling mill hydraulic oil circulating filtering cooling system, the normally closed butterfly valve is arranged between the cooling water supply port and the cooling water return port, and after the normally closed butterfly valve, the water filter and the two-position three-way reversing valve are connected in parallel, one end of the normally closed butterfly valve is connected with the cooling water supply port, and the other end of the normally closed butterfly valve is connected with the port P of the hydraulic oil cooler; and normally open butterfly valves are arranged on the pipelines at the two ends of the water filter.
In the improved rolling mill hydraulic oil circulating filtering cooling system, a normally closed butterfly valve is arranged on a pipeline between a hydraulic oil outlet of the main hydraulic pump and the auxiliary hydraulic oil tank; and a normally open butterfly valve, a pressure gauge and a normally closed butterfly valve are arranged on a pipeline between a hydraulic oil outlet of the auxiliary hydraulic pump and the main hydraulic oil tank.
The utility model adopts a brand new hydraulic structure, the duplex switching filter replaces a high-pressure filter in the hydraulic oil circulating and filtering system, when the working filter element of the duplex switching filter needs to be replaced, the change-over switch of the duplex switching filter is operated, the hydraulic oil is filtered by a standby filter element, the working filter element is replaced, and further the filter element is replaced under the condition of no shutdown; the normally closed butterfly valve is arranged in the hydraulic oil cooling system to realize bypass control, and when the water filter element needs to be replaced, the normally closed butterfly valve is opened, the normally open butterfly valves at the two ends of the water filter element are closed, and therefore the water filter element can be replaced under the condition of not stopping cooling water; in the hydraulic oil refueling system, a T port of a fine filter is directly connected with a main hydraulic oil tank, when refueling is needed, a normally closed butterfly valve of an oil outlet of an auxiliary hydraulic pump is directly opened, refueling can be achieved, and a person does not need to be sent to an underground oil depot to pour a valve; through add dedicated oil extraction pipeline between main hydraulic tank and vice hydraulic tank, when needing the oil extraction, open the normal close butterfly valve on the oil extraction pipeline, alright realize the oil extraction to save and dismantle the pipeline, avoid impurity to get into in the hydraulic system.
The utility model has the advantages that:
the utility model discloses not only can satisfy and change profit filter core under the condition of not shutting down, be suitable for long-term continuous production, the filter effect of cooling down moreover is obvious, has increased the life of various components, makes hydraulic system work more stable, has improved work efficiency greatly. Furthermore, the utility model discloses still have convenient operation, maintain simply, advantage such as the operation is reliable can satisfy the requirement of the special operation operating mode of rolling mill high-low pressure.
Drawings
FIG. 1 is a schematic diagram of a conventional rolling mill hydraulic oil circulating, filtering and cooling system;
fig. 2 is a schematic view of the present invention;
labeled as: the hydraulic oil cooler comprises a main hydraulic oil tank 1, a main hydraulic pump 2, a pressure gauge 3, a safety valve 4, a back pressure valve 5, a normally open butterfly valve 6, a high-pressure filter 7, a hydraulic oil cooler 8, a one-way valve 9, a two-position three-way reversing valve 10, a water filter 11, a normally closed butterfly valve 12, a fine filter 13, an auxiliary hydraulic pump 14, an auxiliary hydraulic oil tank 15 and a duplex switching filter 16.
Detailed Description
The utility model discloses an overcome the defect that traditional rolling mill hydraulic oil's loop filter cooling system exists, provide a modified rolling mill hydraulic oil loop filter cooling system, this system not only can satisfy changes profit filter core under the condition of not shutting down, is suitable for long-term continuous production, and the filter effect of cooling down is obvious moreover, has increased the life of various components, makes hydraulic system work more stable, has improved work efficiency greatly. Furthermore, the utility model discloses still have convenient operation, maintain simply, advantage such as the operation is reliable can satisfy the requirement of the special operation operating mode of rolling mill high-low pressure.
Referring to fig. 2, the utility model discloses mainly include hydraulic pump, oil tank, hydraulic oil circulating and filtering system, hydraulic oil cooling system, hydraulic oil filling system and hydraulic oil discharge system. The hydraulic pump comprises a main hydraulic pump 2 and an auxiliary hydraulic pump 14, the oil tank comprises a main hydraulic oil tank 1 and an auxiliary hydraulic oil tank 15, and the hydraulic oil circulating and filtering system comprises the main hydraulic pump 2, a duplex switching filter 16, a hydraulic oil cooler 8 and the main hydraulic oil tank 1; the hydraulic oil cooling system comprises a water filter 11, a two-position two-way reversing valve 10 and a hydraulic oil cooler 8; the hydraulic oil refueling system comprises an auxiliary hydraulic pump 14, a fine filter 13, an auxiliary hydraulic oil tank 14 and a main hydraulic oil tank 1. The hydraulic oil discharge system includes a main hydraulic pump 2, an auxiliary hydraulic tank 15, and a main hydraulic tank 1. The hydraulic oil outlets of the main hydraulic pump 2 and the auxiliary hydraulic pump 14 are respectively provided with a pressure gauge 3, and the hydraulic oil inlet of the auxiliary hydraulic pump 14, the hydraulic oil outlet of the main hydraulic pump 2 and the water inlet and outlet of cooling water are respectively provided with a normally open butterfly valve 6.
The safety valve 4 is arranged between an oil outlet of the main hydraulic pump 2 and the main hydraulic oil tank 1, and hydraulic faults caused by faults of the duplex switching filter 16 are prevented; the back pressure valve 5 is connected between the main hydraulic pump 2 and the duplex switching filter 16, so that the pipeline is cleaned without being detached; the check valve 9 is arranged on a pipeline connecting a port B of the hydraulic oil cooler 8 with the main hydraulic oil tank 1 to form a check hydraulic loop; the duplex switching filter 16 is arranged between the main hydraulic pump 2 and the main hydraulic oil tank 1 to form a circulating filtering loop, wherein the duplex switching filter 16 is in a group, the safety valves 4 are in a group, the one-way valves 9 are in a group, and the back pressure valves 5 are in a group.
The water filter 11 is arranged between the water inlet of the cooling book and the two-position two-way reversing valve 10 to form a cooling water filtering loop; the two-position two-way reversing valve 10 is arranged between the water filter 11 and the normally open butterfly valve 6 to form an electric cut-off loop; a group of normally open butterfly valves 6 are arranged between the two-position two-way reversing valve 10 and the hydraulic oil cooler 8 to form a hydraulic oil cooling control loop; a normally closed butterfly valve 12 is arranged at the cooling water supply port and the cooling water return port to form a bypass control loop; a normally open butterfly valve 6 is also arranged on the cooling water return pipeline;
the fine filter 13 is arranged between the auxiliary hydraulic pump 14 and the main hydraulic oil tank 1 to form an oil adding fine filtering loop; the normally closed butterfly valve 12 is arranged between the auxiliary hydraulic pump 14 and the main hydraulic oil tank 1 to form an oiling switching loop; a normally closed butterfly valve 12 is also arranged between the main hydraulic pump 2 and the auxiliary hydraulic oil tank 15 to form an oil discharge switching loop; wherein, the normally closed butterfly valves 12 are three groups.
In the present embodiment, the dual-switching filter 16 is RFLD BN/HC 1320CAT 3D1, X-Y
The water filter 11 is of the type: PN16-SF 304(0.25 mm)
The two-position two-way reversing valve 10 has the following model: 8410800.9501
The model of the fine filter 13 is: LC 6-100-5
When the double-linkage switching type filter 16 works, the main hydraulic pump 2 is started to circularly filter hydraulic oil in the main hydraulic oil tank 1, and when a working filter element in the double-linkage switching type filter 16 reaches the service life, a switching switch of the double-linkage switching type filter 16 is operated to filter the hydraulic oil through a standby filter element and replace the working filter element, so that the filter element is replaced under the condition of no shutdown; the hydraulic oil cooling control is realized by operating the two-position two-barrel reversing valve 10, when the filter element of the water filter 11 is blocked, the normally closed butterfly valve 12 on the bypass control loop is opened to carry out the hydraulic oil cooling control of the bypass loop, the normally open butterfly valves 6 at the two ends of the water filter 11 are closed to clean and replace the filter element of the water filter 11, and then the water filter element can be replaced under the condition of not stopping cooling water; by additionally arranging a special oil discharge pipeline between the main hydraulic oil tank 1 and the auxiliary hydraulic oil tank 15, when oil needs to be discharged, the oil can be discharged by opening a normally closed butterfly valve 12 on the oil discharge pipeline; when oil needs to be added, the normally closed butterfly valve 12 at the oil outlet of the auxiliary hydraulic pump 14 is directly opened, so that oil can be added without sending people to an underground oil depot pouring valve.
Claims (4)
1. An improved rolling mill hydraulic oil circulating filtering and cooling system comprises a hydraulic pump, an oil tank, a hydraulic oil circulating filtering system, a hydraulic oil cooling system and a hydraulic oil refueling system, wherein the hydraulic oil cooling system comprises a water filter (11), a two-position two-way reversing valve (10) and a hydraulic oil cooler (8), an A port of the water filter (11) is connected with a water supply port of cooling water, a B port of the water filter is connected with a P port of the two-position two-way reversing valve (10), the A port of the two-position two-way reversing valve (10) is connected with the P port of the hydraulic oil cooler (8), and a T port of the hydraulic oil cooler (8) is connected with a water return port of the cooling water; the method is characterized in that: the hydraulic oil drainage system is also included; the hydraulic oil circulating and filtering system comprises a main hydraulic pump (2), a duplex switching filter (16), a hydraulic oil cooler (8) and a main hydraulic oil tank (1), wherein a port P of the duplex switching filter (16) is connected with the main hydraulic pump (2), a port T is connected with a port A of the hydraulic oil cooler (8), and a port B of the hydraulic oil cooler (8) is connected with the main hydraulic oil tank (1);
the hydraulic oil refueling system comprises an auxiliary hydraulic pump (14), a fine filter (13), an auxiliary hydraulic oil tank (15) and a main hydraulic oil tank (1), wherein the auxiliary hydraulic pump (14) is respectively connected with P ports of the auxiliary hydraulic oil tank (15) and the fine filter (13), and a T port of the fine filter (13) is connected with the main hydraulic oil tank (1);
the hydraulic oil discharge system comprises a main hydraulic pump (2), an auxiliary hydraulic oil tank (15) and a main hydraulic oil tank (1), wherein an oil inlet of the main hydraulic pump (2) is connected with the main hydraulic oil tank (1), and an oil outlet of the main hydraulic oil pump is connected with the auxiliary hydraulic oil tank (15).
2. The improved rolling mill hydraulic oil circulating, filtering and cooling system as set forth in claim 1, wherein: a one-way valve (9) is arranged on a pipeline between the hydraulic oil cooler (8) and the main hydraulic oil tank (1); a safety valve (4) is arranged on a pipeline between an oil outlet of the main hydraulic pump (2) and the main hydraulic oil tank (1); a pressure gauge (3), a backpressure valve (5) and a normally open butterfly valve (6) are arranged between the main hydraulic pump (2) and the duplex switching filter (16).
3. The improved rolling mill hydraulic oil circulating, filtering and cooling system as set forth in claim 1, wherein: a normally closed butterfly valve (12) is arranged between the cooling water supply port and the cooling water return port, after the normally closed butterfly valve (12) is connected with a water filter (11) and a two-position three-way reversing valve (10) in parallel, one end of the normally closed butterfly valve is connected with the cooling water supply port, and the other end of the normally closed butterfly valve is connected with a port P of a hydraulic oil cooler (8); and normally open butterfly valves (6) are arranged on pipelines at two ends of the water filter (11).
4. The improved rolling mill hydraulic oil circulating, filtering and cooling system as set forth in claim 1, wherein: a normally closed butterfly valve (12) is arranged on a pipeline between a hydraulic oil outlet of the main hydraulic pump (2) and the auxiliary hydraulic oil tank (15); a normally open butterfly valve (6), a pressure gauge (3) and a normally closed butterfly valve (12) are arranged on a pipeline between a hydraulic oil outlet of the auxiliary hydraulic pump (14) and the main hydraulic oil tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020697559.5U CN213088392U (en) | 2020-04-30 | 2020-04-30 | Improved rolling mill hydraulic oil circulating filtering cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020697559.5U CN213088392U (en) | 2020-04-30 | 2020-04-30 | Improved rolling mill hydraulic oil circulating filtering cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN213088392U true CN213088392U (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020697559.5U Expired - Fee Related CN213088392U (en) | 2020-04-30 | 2020-04-30 | Improved rolling mill hydraulic oil circulating filtering cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104674A (en) * | 2023-02-28 | 2023-05-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
-
2020
- 2020-04-30 CN CN202020697559.5U patent/CN213088392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104674A (en) * | 2023-02-28 | 2023-05-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
| CN116104674B (en) * | 2023-02-28 | 2024-01-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
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Granted publication date: 20210430 |