CN219639154U - Hydraulic energy-saving device for lifting loop of heating furnace - Google Patents
Hydraulic energy-saving device for lifting loop of heating furnace Download PDFInfo
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- CN219639154U CN219639154U CN202320894260.2U CN202320894260U CN219639154U CN 219639154 U CN219639154 U CN 219639154U CN 202320894260 U CN202320894260 U CN 202320894260U CN 219639154 U CN219639154 U CN 219639154U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 238000005381 potential energy Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the field of hydraulic motors of heating furnace systems in the metallurgical industry, and relates to a hydraulic energy-saving device for a lifting loop of a heating furnace. According to the utility model, the gravitational potential energy of the load is recycled through the plunger type energy accumulator, the oil inlet of the rodless cavity is raised, the oil inlet of the rod cavity is lowered, the power system only needs to provide flow and pressure when the oil cylinder is lowered, and the required flow is relatively small due to the small area of the rod cavity of the oil cylinder, so that the power configuration of the system is greatly reduced, the capacity design of the system can be reduced, and a good energy saving effect is achieved.
Description
Technical Field
The utility model belongs to the field of hydraulic motors of heating furnace systems in the metallurgical industry, and particularly relates to a hydraulic energy-saving device for a heating furnace lifting loop.
Background
The heating furnace is equipment for heating materials or workpieces to a forging temperature by rolling, a stepping heating furnace is generally used for production in a large-scale factory, when metal is heated, a steel billet is driven by a hydraulic system, the production risk is reduced, the production efficiency is improved, and the device has the characteristic of stable operation.
In the prior art, the flow rate of a system for lifting operation is varied from 520L/min to 1600L/min in the use process of the heating furnace, and the hydraulic system is required to select 3-8 oil pumps with the flow rate of 200L/min in design and use, and the working pressure of the system is 14-16MPa due to the fact that the loads of a general heating furnace steel beam, a water tank, a steel billet and the like are about 600t and the inclination angle of a heating furnace lifting oil cylinder is 13 degrees, the required flow rate and power are large, the pressure is high, and energy conservation is not facilitated.
Disclosure of Invention
The utility model aims to provide a hydraulic energy-saving device for a lifting loop of a heating furnace, the hydraulic energy-saving device is used for recycling gravitational potential energy of a reclaimed load of a plunger type energy accumulator, a rodless cavity is used for lifting oil, a rod cavity is used for lifting oil, a power system only needs to provide flow and pressure when a cylinder is lifted, and because the area of the rod cavity of the cylinder is small, the required flow is relatively small, the power configuration of the system is greatly reduced, the capacity design of the system can be reduced, a good energy-saving effect is achieved, meanwhile, the air pressure, the oil pressure and the working condition of the cylinder of the plunger type energy accumulator can be monitored in real time by arranging an electric control device, and automatic oiling, oil supplementing, air pressure monitoring, alarming and the like are realized.
In order to achieve the purpose, the technical scheme includes that the hydraulic energy-saving device for the lifting loop of the heating furnace comprises an oil cylinder, wherein one end of the oil cylinder is provided with a hydraulic motor, the front part of the hydraulic motor is provided with a second electromagnetic reversing valve, one side of the second electromagnetic reversing valve is provided with a third electromagnetic reversing valve, the rear part of the third electromagnetic reversing valve is provided with a plunger type energy accumulator, and one side of the plunger type energy accumulator is provided with a nitrogen tank.
As a further improvement of the utility model, one side of the hydraulic motor is provided with an electric control device.
As a further improvement of the utility model, a pressure sensor is arranged on one side of the hydraulic motor.
As a further improvement of the utility model, the other side of the second electromagnetic directional valve is provided with a first electromagnetic directional valve.
As a further improvement of the utility model, one side of the nitrogen tank is provided with a pressure sensor at the air pressure end.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. according to the utility model, gravitational potential energy of a recovered load of the plunger type energy accumulator is recycled, the oil inlet of the rodless cavity is raised, the oil inlet of the rod cavity is lowered, and the power system only needs to provide flow and pressure when the oil cylinder is lowered;
2. the utility model can monitor the air pressure, oil pressure and working condition of the oil cylinder of the plunger type energy accumulator in real time by arranging the electric control device, and realize automatic oiling, oil supplementing, air pressure monitoring, alarming and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hydraulic economizer for a heating furnace lift loop according to the present utility model;
in the figures, 1, an oil cylinder, 2, a plunger type energy accumulator, 3, a nitrogen tank, 4, a first electromagnetic directional valve, 5, a second electromagnetic directional valve, 6, a third electromagnetic directional valve, 7, a pressure sensor, 8, a pressure end pressure sensor, 9, a hydraulic motor, 10 and an electric control device.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
In the embodiment 1, as shown in fig. 1, the utility model provides a hydraulic energy-saving device for a lifting loop of a heating furnace, which comprises an oil cylinder 1, wherein one end of the oil cylinder 1 is provided with a rodless cavity opening A, the rodless cavity opening A is communicated with a hydraulic motor 9A5, the oil cylinder 1 is provided with a rod cavity opening which is communicated with a second oil outlet B1 of a first electromagnetic reversing valve 4 through a pipeline or a valve block, the other end of the oil cylinder is provided with a rod cavity opening B, a displacement sensor or a position detection device is arranged on the oil cylinder 1, one end of the oil cylinder 1 is provided with a hydraulic motor 9, one side of the hydraulic motor 9 is provided with a pressure sensor 7, the pressure sensor 7 is used for detecting the oil pressure of a plunger type accumulator 2 and the oil pressure of the oil cylinder 1 without the rod cavity opening, one side of the hydraulic motor 9 is provided with an electric control device 10, the electric control device 10 analyzes whether the oil stored in the plunger type accumulator 2 is less or not by receiving the pressure of nitrogen and the pressure and the piston stroke information of the plunger type accumulator 2, if the quantity of oil in the plunger type accumulator 2 is excessive, the electromagnet YA2 of the second electromagnetic directional valve 5 is controlled to be electrified, the pressure port P2 of the second electromagnetic directional valve 5 is communicated with the oil outlet A3 of the plunger type accumulator 2, the system supplements power oil to the plunger type accumulator 2, the set value of the oil pressure end pressure sensor 7 is reached, the electromagnet YA2 of the second electromagnetic directional valve 5 is controlled to be powered off, the second electromagnetic directional valve 5 is closed to stop supplementing oil, if the quantity of oil in the plunger type accumulator 2 is excessive, the third electromagnetic directional valve 6 is controlled to be electrified, the oil outlet A3 of the third electromagnetic directional valve 6 is communicated with a low-pressure oil return system of the system, the oil in the plunger type accumulator 2 is discharged through an electromagnetic valve and falls to the set value of the oil pressure end pressure sensor 7, the electromagnet YA1 of the third electromagnetic directional valve 6 is controlled to be powered off, the third electromagnetic directional valve 6 is closed to stop discharging oil, and the nitrogen pressure is monitored through the air pressure end pressure sensor 8, through contrast, nitrogen gas leakage signals are sent out when the pressure of nitrogen gas is reduced, an automatic inflation device is manually or connected, nitrogen gas is supplemented to the nitrogen gas tank 3 until the system is required, a second electromagnetic reversing valve 5 is arranged at the front part of the hydraulic motor 9, a pressure port P2 of the second electromagnetic reversing valve 5 is communicated with system pressure oil, an oil outlet A2 of the second electromagnetic reversing valve 5 is communicated with an oil inlet end of the plunger type energy accumulator 2 through a pipeline or a valve block, a first electromagnetic reversing valve 4 is arranged on the other side of the second electromagnetic reversing valve 5, a pressure port P1 of the first electromagnetic reversing valve 4 is communicated with system pressure oil, an oil return port T1 of the oil return port is communicated with a low pressure oil return port until the system is required, a third electromagnetic reversing valve 6 is arranged on one side of the second electromagnetic reversing valve 5, a pressure port P3 of the third electromagnetic reversing valve 6 is communicated with the system low pressure oil return port, a plunger type energy accumulator 2 is arranged at the rear part of the third electromagnetic reversing valve 6, an air inlet end of the plunger type energy accumulator 2 is communicated with the nitrogen gas tank 3 through a pipeline or a valve block, an oil inlet end of the plunger type energy accumulator 2 can be communicated with the first electromagnetic reversing valve 3, an oil inlet end of the plunger type energy accumulator 2 can be opened to the pressure sensor is arranged at one side of the plunger type energy accumulator 2, and the pressure sensor is arranged at one side of the pressure sensor 3 is opened, and the pressure sensor is arranged at the position of the pressure sensor is in the pressure sensor 3 of the pressure sensor is in the pressure tank 3, and the pressure sensor is in the pressure tank 3 phase of the pressure tank 3, and is in the pressure communication with the pressure tank is in the pressure tank 3.
When in use, the nitrogen tank 3 is filled with nitrogen, the pressure of the nitrogen needs to reach a set value, the oil cylinder 1 is vertically or obliquely arranged, the oil cylinder 1 is at the lowest position, the second electromagnetic directional valve 5 is opened, system pressure oil is filled into the plunger type energy accumulator 2, at the moment, the electric control device 10 detects the position of the piston of the plunger type energy accumulator 2 through a displacement sensor on the plunger type energy accumulator 2 so as to calculate the capacity of the plunger type energy accumulator 2, in addition, the required capacity can be calculated according to the size and the stroke of the actually used oil cylinder 1, the position of the plunger type energy accumulator 2 is set according to the capacity, when the set position value of the plunger type energy accumulator 2 is reached, the second electromagnetic directional valve 5 is closed at the moment, the initial charging process is completed, the electromagnet YA3 of the first electromagnetic directional valve 4 is electrified, the first electromagnetic directional valve 4 acts, the pressure port P1 of the first electromagnetic directional valve 4 is communicated with the second oil outlet B1 thereof, the system pressure oil enters the rod cavity of the oil cylinder 1 through the rod cavity B opening of the oil cylinder 1, meanwhile, the servo motor drives the hydraulic motor 9 to rotate, the oil in the rodless cavity of the oil cylinder 1 is pressed into the plunger accumulator through the A4 opening of the hydraulic motor 9, the oil cylinder 1 descends under the combined action of the servo motor and the load, the electromagnet YA3 of the first electromagnetic reversing valve 4 is powered off, the second oil outlet B1 opening of the first electromagnetic reversing valve 4 is closed, the electric control system controls the servo motor to stop rotating, when the oil cylinder 1 stops acting and descends, the gravitational potential energy of the load is balanced with the pressure energy in the plunger accumulator, the servo motor drives the hydraulic motor 9 to rotate, so that the kinetic energy required by descending of the oil cylinder 1 and the load is generated, the piston motion of the plunger rod is pushed, the potential energy of the oil cylinder 1 is compressed, and the potential energy of the load is stored, the oil inlet of the rod cavity of the oil cylinder 1 only supplements oil and pressure loss, so that the required pressure is not high, the required power is very low, the electromagnet YA4 of the first electromagnetic directional valve 4 is electrified, the electromagnet YA4 of the first electromagnetic directional valve 4 acts, the oil return port T1 of the first electromagnetic directional valve 4 is communicated with the oil outlet B1 of the first electromagnetic directional valve, the oil tank is communicated with a low-pressure oil return pipe of the system, the electric control system controls the servo motor to drive the hydraulic motor 9 to rotate the pressure oil in the plunger accumulator to enter the rodless cavity of the oil cylinder 1 to push the load to rise, when the load rises, the pressure energy in the plunger accumulator is balanced with the gravitational potential energy of the load per se, the servo motor drives the hydraulic motor 9 to rotate, so that the oil cylinder 1 generates kinetic energy required to rise, the oil cylinder 1 rises to the position, the first electromagnetic directional valve 4 stops acting in a power cut-off mode, so that the reciprocating lifting action can be performed, the nitrogen tank 3 and the plunger accumulator 2 form a spring, the load born by the oil cylinder 1 is balanced, when the descending action is performed, the servo motor drives the hydraulic motor 9 to drive the hydraulic motor to rotate the plunger accumulator to rotate, the pressure oil in the rodless cavity of the plunger accumulator to enter the rodless cavity to push the load to rise, when the load to rise, the pressure energy is balanced with the pressure energy required to be stored in the pressure energy of the nitrogen cylinder, and the pressure energy is only required to rise, and the load can be in the state when the load is stored to rise.
What is not described in detail in the present description belongs to the prior art known to those skilled in the art.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims (5)
1. The hydraulic energy-saving device for the heating furnace lifting loop comprises an oil cylinder and is characterized in that a hydraulic motor is arranged at one end of the oil cylinder, a second electromagnetic reversing valve is arranged at the front part of the hydraulic motor, a third electromagnetic reversing valve is arranged at one side of the second electromagnetic reversing valve, a plunger type energy accumulator is arranged at the rear part of the third electromagnetic reversing valve, and a nitrogen tank is arranged at one side of the plunger type energy accumulator.
2. The hydraulic economizer for a furnace lifting loop of claim 1 wherein an electronic control device is provided on one side of the hydraulic motor.
3. The hydraulic economizer for a furnace lifting loop of claim 1 wherein a pressure sensor is provided on one side of the hydraulic motor.
4. The hydraulic economizer for the lifting loop of the heating furnace according to claim 1, wherein the second electromagnetic directional valve is provided with a first electromagnetic directional valve on the other side.
5. The hydraulic economizer for a furnace lifting loop of claim 1 wherein a pneumatic end pressure sensor is provided on one side of the nitrogen tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320894260.2U CN219639154U (en) | 2023-04-20 | 2023-04-20 | Hydraulic energy-saving device for lifting loop of heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320894260.2U CN219639154U (en) | 2023-04-20 | 2023-04-20 | Hydraulic energy-saving device for lifting loop of heating furnace |
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| Publication Number | Publication Date |
|---|---|
| CN219639154U true CN219639154U (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320894260.2U Active CN219639154U (en) | 2023-04-20 | 2023-04-20 | Hydraulic energy-saving device for lifting loop of heating furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN219639154U (en) |
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2023
- 2023-04-20 CN CN202320894260.2U patent/CN219639154U/en active Active
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