CN210686508U - Prevent leaking hydraulic system and hydraulic means based on pressure is compared - Google Patents
Prevent leaking hydraulic system and hydraulic means based on pressure is compared Download PDFInfo
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- CN210686508U CN210686508U CN201921485658.0U CN201921485658U CN210686508U CN 210686508 U CN210686508 U CN 210686508U CN 201921485658 U CN201921485658 U CN 201921485658U CN 210686508 U CN210686508 U CN 210686508U
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Abstract
The utility model discloses a prevent leaking hydraulic system and hydraulic means based on pressure is compared, including treater, hydraulic drive, alarm device and pressure sensing device, hydraulic drive includes hydraulic pump, switching-over valve and pneumatic cylinder, the treater is connected with hydraulic pump, switching-over valve, alarm device and pressure sensing device respectively, pressure sensing device is arranged in gathering the hydraulic pressure value in the hydraulic circuit of hydraulic drive operation in-process, the hydraulic pump is used for providing power for the pneumatic cylinder, the switching-over valve is used for controlling the switching-over of hydraulic pressure oil stream. The processor compares the hydraulic pressure value acquired by the pressure sensing device with the hydraulic pressure value preset by the system, and judges whether an oil leakage accident occurs, so that the fault is found in advance, the equipment fault loss is reduced, the occurrence of the large-area oil leakage accident of the hydraulic system is prevented, and the environmental pollution is reduced.
Description
Technical Field
The utility model relates to a hydraulic system technical field especially relates to a prevent leaking hydraulic system and hydraulic means based on pressure is compared.
Background
With the development of industry, the hydraulic system of industrial equipment is widely applied to industrial equipment, and usually, because the hydraulic system is hidden in the equipment, when the equipment has a fault and hydraulic oil is leaked, the hydraulic oil cannot be found in time, so that a large amount of hydraulic oil is wasted, the environment is polluted, and a large amount of manpower time is spent for processing; whether oil leak of current liquid level inductor by extensive application detects hydraulic system, however traditional liquid level inductor test mode is for only just sending out signal when the liquid level reaches the liquid level inductor and sets for the position, and has caused a large amount of leakages and the environmental pollution of hydraulic oil this moment, does not have at present to discover the trouble in advance, reduces equipment trouble loss and then prevents that hydraulic system from taking place the technique that reduces environmental pollution simultaneously of the occurence of failure of revealing by a large scale.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a can discover equipment trouble in advance and then prevent that hydraulic oil from revealing the leak-proof hydraulic system and the hydraulic means that reduce environmental pollution based on pressure ratio.
The utility model adopts the technical proposal that:
the utility model provides a prevent leaking hydraulic system based on pressure ratio, its includes treater, hydraulic drive, alarm device and pressure sensing device, hydraulic drive includes hydraulic pump, switching-over valve and pneumatic cylinder, the treater is connected with hydraulic pump, switching-over valve, alarm device and pressure sensing device respectively, pressure sensing device is arranged in gathering the hydraulic pressure value in the hydraulic circuit of hydraulic drive operation in-process, the hydraulic pump is used for providing power for the pneumatic cylinder, the switching-over valve is used for controlling the switching-over of hydraulic pressure oil stream.
Further, as a preferred embodiment, the pressure sensing device comprises a pressure sensor and a relief valve, and the pressure sensor is connected with the relief valve.
Further, as a preferred embodiment, the alarm device adopts an alarm bell alarm and/or an alarm flashing light.
The second technical scheme of the utility model is:
the hydraulic device comprises power equipment and a leakage-proof hydraulic system, wherein the leakage-proof hydraulic system adopts the leakage-proof system based on pressure comparison.
The utility model has the advantages that: the embodiment of the utility model provides a prevent leaking hydraulic system based on pressure ratio, it includes treater, hydraulic drive device, alarm device and pressure sensing device, hydraulic drive device includes hydraulic pump, switching-over valve and pneumatic cylinder, the treater is connected with hydraulic pump, switching-over valve, alarm device and pressure sensing device respectively, pressure sensing device is used for gathering the hydraulic pressure value in the hydraulic circuit of hydraulic drive device operation in-process, the hydraulic pump is used for providing power for the pneumatic cylinder, the switching-over valve is used for controlling the switching-over of hydraulic pressure oil stream; the processor judges whether oil leaks or not according to the hydraulic pressure value collected by the pressure sensing device and the preset hydraulic pressure value, when the hydraulic pressure value collected by the pressure sensing device is smaller than the preset hydraulic pressure value of the system, an oil leakage accident occurs in the system, the alarm device sends out an alarm signal, and otherwise, the system is in a normal state. The utility model discloses another aspect provides a hydraulic means, it includes the power equipment and prevents leaking hydraulic system, prevent leaking the system adoption a prevent leaking hydraulic system based on pressure ratio. The utility model provides a prevent leaking hydraulic system and hydraulic means based on pressure is compared, carries out the comparison with the hydraulic pressure value that the system predetermines through the hydraulic pressure value that the treater gathered pressure sensing device, judges whether the oil leak accident appears, has realized discovering the trouble in advance, reduces equipment failure loss and prevents that hydraulic system from taking place the emergence of large tracts of land oil leak accident and reducing environmental pollution simultaneously.
Drawings
Fig. 1 is a schematic diagram of a leak-proof hydraulic system based on pressure comparison according to the present invention;
FIG. 2 is a block diagram of an embodiment of the present invention;
fig. 3 is a schematic view of an embodiment of the hydraulic apparatus of the present invention.
Reference numerals: 1. the hydraulic system comprises an oil suction filter, a hydraulic pump 2, a pressure sensor 3, a reversing valve 4, a hydraulic cylinder 5, an overflow valve 6, an oil return filter 7 and a hydraulic oil tank 8.
Detailed Description
As shown in fig. 1, this embodiment provides a leak-proof hydraulic system based on pressure comparison, which includes a processor, a hydraulic transmission device, an alarm device, and a pressure sensing device, where the hydraulic transmission device includes a hydraulic pump, a directional control valve, and a hydraulic cylinder, the processor is respectively connected to the hydraulic pump, the directional control valve, the alarm device, and the pressure sensing device, the pressure sensing device is configured to collect a hydraulic pressure value in a hydraulic circuit during operation of the hydraulic transmission device, the hydraulic pump is configured to provide power to the hydraulic cylinder, and the directional control valve is configured to control a direction change of hydraulic oil flow.
And the processor is used for comparing the hydraulic pressure value acquired by the pressure sensing device with a hydraulic pressure value preset by the system. The working principle of the system is as follows: the method comprises the steps that a system sets a first hydraulic pressure value P1 as a maximum hydraulic pressure value, the hydraulic pressure value during load operation in a hydraulic circuit is a second hydraulic pressure value P2, the maximum value P2Max of the second hydraulic pressure value during the maximum load operation of the system is continuously loaded and determined, the first hydraulic pressure value P1 is larger than or equal to the maximum value P2Max of the second hydraulic pressure value, the hydraulic pressure value during no-load operation is an initial hydraulic pressure value P0, the system presets a third hydraulic pressure value P3 as a comparison hydraulic pressure value, and the third hydraulic pressure value P3 is larger than the initial hydraulic pressure value P0 and smaller than the maximum value P2Max of the second hydraulic pressure value; the method comprises the steps that a pressure sensing device collects the maximum value P2Max of a second hydraulic pressure value in a hydraulic loop in the operation process of a hydraulic transmission device, the hydraulic pressure value P2Max is transmitted to a processor, the processor is used for comparing the maximum value P2Max of the second hydraulic pressure value collected by the pressure sensing device with a third hydraulic pressure value P3 preset by a system, when the maximum value P2Max of the second hydraulic pressure value collected by the pressure sensing device is smaller than the third hydraulic pressure value P3 preset by the system, oil leakage accidents or faults occur in the system are judged, the alarm device is controlled to send out an alarm signal, shutdown is reminded to process in time, if no oil leakage accidents or faults occur, an equipment control system is reset, and if false alarms occur for multiple times, the third hydraulic pressure value P3 preset by the system is adjusted until false alarms are eliminated.
The hydraulic pump outputs hydraulic oil to the hydraulic cylinder through the reversing valve to drive the hydraulic cylinder to do work; the reversing valve is a directional control valve with more than two flow modes and more than two oil ports, and is used for realizing communication, cutting off and reversing of hydraulic oil flow.
Further, as a preferred embodiment, the pressure sensing device comprises a pressure sensor and a relief valve, and the pressure sensor is connected with the relief valve.
The pressure sensor in the embodiment is preferably a hydraulic sensor, when the pressure sensor works, the pressure sensed by a diaphragm of the sensor generates micro displacement which is in direct proportion to the pressure of a medium, so that the resistance of the sensor is changed, and meanwhile, a standard signal corresponding to the pressure is detected and converted by an electronic circuit and output, so that the pressure sensor has the advantages of high measurement precision, high temperature resistance and corrosion resistance; the overflow valve is a hydraulic pressure control valve and has the functions of constant pressure overflow, pressure stabilization, safety protection and system unloading, and the overflow valve is used for setting the maximum pressure value of the system in the embodiment.
Further preferably, the alarm device adopts an alarm bell and/or an alarm flashing light.
The alarm device is used for reminding people of timely acquiring alarm information and rapidly processing an information display device when equipment failure, oil leakage accident or dangerous condition occurs, the types of the common alarm devices comprise a visual alarm, an auditory alarm, a touch alarm and an olfactory alarm, and in the embodiment, an alarm bell alarm and/or an alarm flashing lamp with auditory signals and/or visual signals are preferred for enhancing the display strength.
The embodiment also provides a hydraulic device, which comprises power equipment and a leakage-proof system, wherein the leakage-proof system is a leakage-proof hydraulic system based on pressure comparison.
The utility model discloses a concrete embodiment
A leak-proof hydraulic system based on pressure comparison comprises a processor, a hydraulic transmission device, an alarm device and a pressure sensing device, wherein the hydraulic transmission device comprises a hydraulic pump, a reversing valve and a hydraulic cylinder, the processor is respectively connected with the hydraulic pump, the reversing valve, the alarm device and the pressure sensing device, the pressure sensing device is used for collecting a hydraulic pressure value in a hydraulic loop in the operation process of the hydraulic transmission device, the hydraulic pump is used for providing power for the hydraulic cylinder, and the reversing valve is used for controlling the reversing of hydraulic oil flow; the processor is used for comparing the hydraulic pressure value acquired by the pressure sensing device with a hydraulic pressure value preset by the system; the method comprises the steps that a system sets a first hydraulic pressure value P1 as a maximum hydraulic pressure value, the hydraulic pressure value during load operation in a hydraulic circuit is a second hydraulic pressure value P2, the maximum value P2Max of the second hydraulic pressure value during the maximum load operation of the system is continuously loaded and determined, the first hydraulic pressure value P1 is larger than or equal to the maximum value P2Max of the second hydraulic pressure value, the hydraulic pressure value during no-load operation is an initial hydraulic pressure value P0, the system presets a third hydraulic pressure value P3 as a comparison pressure value, and the third hydraulic pressure value P3 is larger than the initial hydraulic pressure value P0 and smaller than the maximum value P2Max of the second hydraulic pressure value; when the hydraulic control system works, the pressure sensing device collects the maximum value P2Max of a second hydraulic pressure value in a hydraulic loop in the operation process of the hydraulic transmission device, the hydraulic pressure value P2Max is transmitted to the processor, the processor is used for comparing the maximum value P2Max of the second hydraulic pressure value collected by the pressure sensing device with a third hydraulic pressure value P3 preset by the system, when the maximum value P2Max of the second hydraulic pressure value collected by the pressure sensing device is smaller than the third hydraulic pressure value P3 preset by the system, oil leakage accidents or faults of the system are judged, the alarm device is controlled to send out alarm signals, the shutdown is reminded to process in time, if oil leakage accidents or faults do not occur, the equipment control system is reset, and if false alarms occur for multiple times, the third hydraulic pressure value P3 preset by the system is adjusted until false alarms are eliminated.
As shown in fig. 2 to 3, a hydraulic device using a pressure-comparison-based leakage-prevention system includes a processor, a hydraulic transmission device, an alarm device, power equipment, and a pressure sensing device, where the hydraulic transmission device includes a hydraulic pump 2, a directional valve 4, and a hydraulic cylinder 5, the processor is connected to the hydraulic pump 2, the directional valve 4, the alarm device, and the pressure sensing device includes a pressure sensor 3 and an overflow valve 6, and the pressure sensor 3 and the overflow valve 6 are connected to the processor respectively; the alarm device is an alarm bell alarm and/or an alarm flashing light, the power equipment is connected with the hydraulic pump 2, and the power equipment is used for providing power for the hydraulic pump 2, outputting hydraulic oil, supplying oil to the hydraulic cylinder 5 through the reversing valve 4, and finally driving the hydraulic cylinder 5 to do work. Further, the suction oil filter 1 is installed in the hydraulic oil tank 8, and the return oil filter 7 is installed in the hydraulic circuit; the pressure value of the system during no-load operation is P0, the overflow valve 6 sets the maximum hydraulic pressure value P1 of the system, the pressure sensor 3 collects the hydraulic pressure value P2 in the hydraulic circuit, the P2 increases along with the increase of the load, when the load reaches the maximum, the P2 reaches the maximum P2Max, and the P2Max is less than or equal to P1; the system is additionally provided with a hydraulic pressure ratio value P3, wherein the value range of P2 meets the requirement that P0 is greater than P3 is greater than P2Max, and the maximum value P2Max of P2 in the loading process of the hydraulic transmission device is determined through continuous tests; the processor is used for comparing a hydraulic pressure value P2Max acquired by the pressure sensor 3 with a hydraulic pressure value P3 preset by the system:
when P2Max acquired by the pressure sensor 3 is larger than a preset hydraulic pressure value P3, namely P2Max is larger than P3, the system is in a normal state;
when P2Max acquired by the pressure sensor 3 is smaller than a preset hydraulic pressure value P3, namely P2Max is smaller than P3, an oil leakage fault possibly occurs in a system loop, and the system must be stopped for inspection;
if an oil leakage accident is not found in the inspection, the control system is reset;
if multiple false alarms occur, the value of P3 is readjusted so that the value of P3 is within P0 and P2 Max.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (4)
1. The utility model provides a prevent leaking hydraulic system based on pressure ratio, its characterized in that includes treater, hydraulic drive, alarm device and pressure sensing device, hydraulic drive includes hydraulic pump, switching-over valve and pneumatic cylinder, the treater is connected with hydraulic pump, switching-over valve, alarm device and pressure sensing device respectively, pressure sensing device is arranged in gathering the hydraulic pressure value in the hydraulic circuit of hydraulic drive operation in-process, the hydraulic pump is used for providing power for the pneumatic cylinder, the switching-over valve is used for controlling the switching-over of hydraulic oil stream.
2. A leak-proof hydraulic system based on pressure ratio as claimed in claim 1, characterized in that the pressure sensing device comprises a pressure sensor and an overflow valve, the pressure sensor being connected to the overflow valve.
3. A leak-proof hydraulic system based on pressure comparison according to claim 1, characterized in that the alarm device is an alarm bell and/or an alarm flashing light.
4. A hydraulic apparatus, comprising a power plant and a leak-proof hydraulic system, wherein the leak-proof hydraulic system adopts a leak-proof hydraulic system based on pressure ratio as claimed in any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921485658.0U CN210686508U (en) | 2019-09-06 | 2019-09-06 | Prevent leaking hydraulic system and hydraulic means based on pressure is compared |
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| CN201921485658.0U CN210686508U (en) | 2019-09-06 | 2019-09-06 | Prevent leaking hydraulic system and hydraulic means based on pressure is compared |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775601A (en) * | 2020-06-10 | 2021-12-10 | 宝武特种冶金有限公司 | Automatic pressure measurement protection method for hydraulic system of extruder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775601A (en) * | 2020-06-10 | 2021-12-10 | 宝武特种冶金有限公司 | Automatic pressure measurement protection method for hydraulic system of extruder |
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Address after: No. 466, Guanghua Third Road, Baiyun District, Guangzhou City, Guangdong Province Patentee after: Guangzhou environmental sanitation machinery and Equipment Factory Co., Ltd Address before: Baiyun District of Guangzhou City, Guangdong Province, 510450 Xin Guang Hua Tang Bei Road Patentee before: GUANGZHOU ENVIRONMENTAL SANITATION MECHANICAL EUIPMENT FACTORY |