Transformation system and device for pressure maintaining loop of energy accumulator of hydraulic station of slitting machine

Abstract

The utility model discloses a system and a device for transforming a pressure maintaining loop of an energy accumulator of a hydraulic station of a slitting machine, which belong to the technical field of thin slitting hydraulic pressure, and comprise an oil storage pool, a pressure maintaining loop, a pressure maintaining loop and a pressure maintaining loop, a liquid level controller, a liquid level oil pointer and an air filter are arranged on the oil storage tank; the oil suction branch is provided with a metering pump, a one-way valve, an air bag type energy accumulator and a pressure relay, and the pressure relay is connected with a pressure gauge; the oil return branch is provided with a shell and tube type water cooler, and the shell and tube type water cooler is used for reducing the oil temperature; the pressure maintaining loop system can reduce pressure needed by the pressure maintaining loop system, so that oil temperature and energy consumption are reduced, noise generated by operation of equipment is weakened, production is more environmentally friendly, the working environment of workshop workers is improved, and physical health and hearing of the workers are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of thin longitudinal shear hydraulic pressure, in particular to a system and a device for reforming a pressure-maintaining circuit of an accumulator of a hydraulic station of a longitudinal shear. Background Art

[0002] The existing thin longitudinal shear hydraulic station manufactured by Northwest Machinery Factory is equipped with a pressure-compensated variable pump, such as Figure 1 As shown, a pressure-compensated variable pump and a ball valve are used to achieve a pressure-maintaining circuit in a hydraulic station;

[0003] However, the use of pressure compensation variables will lead to increased energy consumption and noise of the entire device, and excessive pressure will also increase the oil temperature, affecting the factory's work efficiency and increasing the factory's production costs. The noise will damage the workers' health and affect their hearing. Therefore, in order to change this undesirable situation, it is necessary to improve the hydraulic pressure maintaining circuit system. Utility Model Content

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a system and device for reforming the pressure-maintaining circuit of the accumulator of the hydraulic station of a slitting machine;

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a system and device for reforming the pressure-maintaining circuit of an accumulator of a hydraulic station of a slitting machine, comprising:

[0007] An oil reservoir, the oil reservoir is used to contain hydraulic oil, and the oil reservoir is provided with a liquid level controller, a liquid level oil mark and an air filter;

[0008] An oil suction branch, wherein a metering pump, a one-way valve, an airbag accumulator and a pressure relay are arranged on the oil suction branch, and a pressure gauge is connected to the pressure relay;

[0009] An oil return branch, wherein a shell-and-tube water cooler is provided on the oil return branch, and the shell-and-tube water cooler is used to reduce the oil temperature;

[0010] Wherein, on the oil suction branch and the oil return branch, valve channel blocks are connected between various components.

[0011] An optimal technical solution of the utility model is that an energy-saving motor is connected to the metering pump, and the energy-saving motor is used to reduce the operating cost of the thin longitudinal shear hydraulic system.

[0012] An optimal technical solution of the utility model is that an oil suction filter and an oil return filter are respectively provided at the ends of the oil suction branch and the oil return branch.

[0013] The preferred technical solution of the utility model is that an electromagnetic overflow valve is installed between the oil suction branch and the oil return branch, and the electromagnetic overflow valve and the one-way valve are installed in the circuit one after another.

[0014] A device for modifying the pressure-maintaining circuit of an accumulator in a hydraulic station of a slitting machine, characterized in that the device comprises a box and any one of the accumulator pressure-maintaining circuit modification systems for a hydraulic station of a slitting machine, wherein a cavity is provided on the box to improve the noise-isolating effect of the box.

[0015] A preferred technical solution of the utility model is that a sound absorbing material is arranged in the cavity.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a system and device for modifying the pressure-maintaining circuit of an accumulator of a hydraulic station of a slitting machine. By setting a quantitative pump and an airbag accumulator, the modified system is started, and the airbag in the airbag accumulator cyclically contracts or expands to push out the liquid oil in the airbag accumulator, thereby providing energy for the circuit and achieving the effect of circuit pressure maintenance. The normal operation of the hydraulic station of the slitting machine is ensured, and the stability is good. The required pressure value in the modified pressure-maintaining circuit system is reduced, which is beneficial to reducing the oil temperature. At the same time, it can meet the requirement of closing the shell-and-tube water cooler to stop the water supply capacity of the water pump. Compared with the existing pressure-maintaining circuit system, the utility model can reduce the required pressure value of the pressure-maintaining circuit system, which is beneficial to reducing the oil temperature and energy consumption in the hydraulic station of the slitting machine, as well as reducing the noise generated by the operation of the hydraulic station of the slitting machine, so that the production is more environmentally friendly, the working environment of the workshop workers is improved, and the workers' physical health and hearing are protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a pressure-maintaining circuit of a pressure-compensated variable pump provided in the background technology of the utility model;

[0019] Figure 2 It is a schematic diagram of a pressure-maintaining circuit of an airbag accumulator provided in a specific embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of a box provided in a specific embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Pressure-compensated variable pump; 2. Oil reservoir; 21. Liquid level controller; 22. Liquid level oil mark; 23. Air filter; 3. Oil suction branch; 31. Dosing pump; 32. Check valve; 33. Oil suction filter; 4. Air bag accumulator; 5. Pressure relay; 6. Oil return branch; 61. Shell and tube water cooler; 62. Oil return filter; 7. Valve channel block; 8. Solenoid overflow valve; 9. Box; 91. Cavity. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0024] A system for reforming a pressure-maintaining circuit of an accumulator of a hydraulic station of a slitting machine, comprising:

[0025] The oil reservoir 2 is used to contain hydraulic oil, and is provided with a liquid level controller 21, a liquid level oil mark 22 and an air filter 23;

[0026] The oil suction branch 3 is provided with a metering pump 31, a one-way valve 32, an air bag accumulator 4 and a pressure relay 5, and the pressure relay 5 is connected with a pressure gauge;

[0027] The oil return branch 6 is provided with a shell-and-tube water cooler 61, and the shell-and-tube water cooler 61 is used to reduce the oil temperature;

[0028] In the oil suction branch 3 and the oil return branch 6, a valve channel block 7 is connected between various components.

[0029] like Figure 1-2 As shown, P is the oil inlet direction, T is the oil return direction, and the hydraulic system is improved as follows: the fixed displacement pump 31 (model: 25MCY14-1 B) replaces the existing pressure compensation variable displacement pump 1 (model: 63YCY14-1 B), and a new bladder accumulator 4 (model: NXQ1-L25 / 31.5H) is added, and the bladder accumulator 4 is connected to the entire circuit through a valve channel block 7;

[0030] The liquid level controller 21 and the liquid level oil gauge 22 work together to control the oil level in the oil reservoir 2 to be within a specified range, and the air filter 23 is used to purify the environment in the oil reservoir 2;

[0031] The end of the oil suction branch 3 is located in the oil reservoir 2, and a metering pump 31, a one-way valve 32 and a bladder accumulator 4 are sequentially installed on the oil suction branch 3, wherein a pressure relay 5 is arranged in parallel with the bladder accumulator 4, and the end of the oil return branch 6 is located in the storage battery;

[0032] Start the modified system, the pressure relay 5 detects the pressure in the circuit, if the pressure is insufficient, the switch is turned on, the airbag accumulator 4 is started, the airbag in the airbag accumulator 4 circulates and contracts and expands, so that the liquid oil in it is pushed out, thereby providing energy for the circuit, achieving the effect of circuit pressure maintenance, and ensuring the normal operation of the hydraulic station of the longitudinal shearing machine with good stability. Compared with the pressure maintenance circuit system before the modification, the required pressure value in the modified pressure maintenance circuit system is reduced, and the pressure gauge shows that the pressure is 8MPa. The reduction in pressure value is conducive to reducing the oil temperature;

[0033] It has been verified through testing that when the shell-and-tube water cooler 61 is closed and the ambient temperature of the factory is 21°C, the oil temperature drops from 40°C-50°C before the transformation to 23°C-26°C after the transformation;

[0034] At the same time, the oil temperature after the transformation can meet the requirements of closing the tube-in-tube water cooler 61, so as to shut down the cooling water circulation, thereby stopping the water supply capacity of the water pump;

[0035] Compared with the existing pressure-maintaining circuit system, the utility model can reduce the pressure value required by the pressure-maintaining circuit system, which is beneficial to reducing the oil temperature and energy consumption in the hydraulic station of the slitting machine, and reducing the noise generated by the operation of the hydraulic station of the slitting machine, making production more environmentally friendly, improving the working environment of workshop workers, and protecting the workers' physical health and hearing.

[0036] As a possible implementation of this solution, preferably, Figure 1-2 As shown, the metering pump 31 is connected with an energy-saving motor, which is used to reduce the operating cost of the thin longitudinal shear hydraulic system; the original motor (model: Y160L-4-B35) is replaced by an energy-saving motor (model EYB132M-4), the crude oil pump motor power is 15kw, and the oil pump motor power after the technical transformation is 7.5kw, thereby reducing the motor power by 50%, thereby reducing the hydraulic system oil pump motor power, reducing energy consumption, and achieving energy saving effects; if the longitudinal shear hydraulic station equipment is calculated according to the 24h working system, the electricity bill can be saved by (15-7.5) degrees × 0.6 yuan / degree × 24 hours = 108 yuan per day, and the electricity bill can be saved by about 108 yuan / day × 240 days = 259,200 yuan per year based on 240 days, which is beneficial to reducing the production cost of workers.

[0037] As a possible implementation of this solution, preferably, Figure 2 As shown, an oil suction filter 33 and an oil return filter 62 are respectively provided at the ends of the oil suction branch 3 and the oil return branch 6; the oil suction filter 33 is used to filter out impurities in the liquid oil to be introduced into the oil suction branch 3, wherein in the hydraulic system, each component will wear and produce metal particles and rubber impurities, and the oil return filter 62 is used to filter out the metal particles and rubber impurities carried by the liquid oil, thereby achieving the effect of purifying the liquid oil.

[0038] As a possible implementation of this solution, preferably, as Figure 2 shown, an electromagnetic overflow valve 8 is installed between the oil suction branch 3 and the oil return branch 6, and the electromagnetic overflow valve 8 and the check valve 32 are successively installed on the circuit; the electromagnetic overflow valve 8 is used for unloading or multi-stage pressure control of the hydraulic system, and the fixed displacement pump 31 provides a constant flow rate. When the pressure of the hydraulic system increases, the flow rate demand will decrease. At this time, the electromagnetic overflow valve 8 opens, allowing the excess flow to overflow back to the oil storage tank 2 through the oil return branch 6, which helps to ensure the constancy of the inlet pressure of the overflow valve, the outlet pressure of the pump, and the inlet pressure of the check valve 32, thus helping to protect the fixed displacement pump 31 and the check valve 32.

[0039] A device for reforming the energy storage and pressure maintaining circuit of a hydraulic station of a slitting machine, as Figure 3 shown, the device for reforming the energy storage and pressure maintaining circuit of the hydraulic station of the slitting machine includes a box body 9 and the energy storage and pressure maintaining circuit reforming system of the hydraulic station of the slitting machine according to any one of the above. A cavity 91 is opened on the box body 9, and the cavity 91 is used to improve the noise isolation effect of the box body 9; the outer shell of the box body 9 is a double-layer structure, and the overall shape of the cavity 91 is set to a U shape in cross section, and the cavity 91 is arranged between the double-layer structures, so that the outer shell of the box body 9 forms a hollow double-layer structure. The conversion between the propagation of solid sound and the propagation of air sound will have a loss effect on the noise, which helps to weaken the noise intensity generated inside the hydraulic station of the slitting machine, thereby further protecting the physical health of workers.

[0040] As a possible implementation of this solution, preferably, as Figure 1 shown and as Figure 3 shown, sound-absorbing materials are arranged in the cavity 91; the sound-absorbing materials contain porous structures and can reflect sound multiple times, so as to absorb sound waves to achieve the sound reduction effect. At the same time, the sound-absorbing materials can be sponge rubber, polyurethane foam, etc., which can absorb sound and allow air to pass through, without affecting the heat dissipation of the equipment and reducing the influence of too high temperature in the cavity 91 on the oil temperature.

[0041] The present utility model is described through preferred embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. The present utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application all belong to the scope of protection of the present utility model.

Claims

1. A system for reforming the accumulator pressure-maintaining circuit of a slitting machine hydraulic station, characterized in that: include: An oil reservoir (2), the oil reservoir (2) being used to contain hydraulic oil, and the oil reservoir (2) being provided with a liquid level controller (21), a liquid level oil gauge (22) and an air filter (23); An oil suction branch (3), wherein the oil suction branch (3) is provided with a metering pump (31), a one-way valve (32), an air bag accumulator (4) and a pressure relay (5), and the pressure relay (5) is connected to a pressure gauge; An oil return branch (6), wherein a shell-and-tube water cooler (61) is provided on the oil return branch (6), and the shell-and-tube water cooler (61) is used to reduce the oil temperature; Wherein, on the oil suction branch (3) and the oil return branch (6), a valve channel block (7) is connected between various components.

2. The accumulator pressure-maintaining circuit transformation system of the slitting machine hydraulic station according to claim 1 is characterized in that: The metering pump (31) is connected to an energy-saving motor, and the energy-saving motor is used to reduce the operating cost of the thin longitudinal shear hydraulic system.

3. The accumulator pressure-maintaining circuit transformation system of the slitting machine hydraulic station according to claim 1 is characterized in that: An oil suction filter (33) and an oil return filter (62) are respectively provided at the ends of the oil suction branch (3) and the oil return branch (6).

4. The accumulator pressure-maintaining circuit transformation system of the slitting machine hydraulic station according to claim 3 is characterized in that: An electromagnetic overflow valve (8) is installed between the oil suction branch (3) and the oil return branch (6), and the electromagnetic overflow valve (8) and the one-way valve (32) are installed in sequence on the circuit.

5. A device for reforming the pressure-maintaining circuit of the accumulator of the hydraulic station of a slitting machine, characterized in that: The accumulator pressure-maintaining circuit modification device of the slitting shear hydraulic station comprises a box body (9) and the accumulator pressure-maintaining circuit modification system of the slitting shear hydraulic station according to any one of claims 1 to 4, wherein a cavity (91) is provided on the box body (9), and the cavity (91) is used to improve the noise insulation effect of the box body (9).

6. The accumulator pressure-maintaining circuit transformation device of the slitting machine hydraulic station according to claim 5 is characterized in that: Sound absorbing material is arranged in the cavity (91).

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