CN113309765A

CN113309765A - Oil tank hydraulic oil fire fighting equipment

Info

Publication number: CN113309765A
Application number: CN202110706434.3A
Authority: CN
Inventors: 金峰; 张亮
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-08-27

Abstract

The invention discloses an oil tank hydraulic oil defoaming device which comprises a tank body, wherein the inner space of the tank body is divided into two parts which are mutually communicated through a vertically arranged partition plate filter screen in the middle of the tank body, a circulating filter and an oil return filter are respectively arranged on the top surface of the tank body, two defoaming oil tanks are respectively arranged in the two parts of the tank body through supporting legs, an L-shaped oil outlet pipe is respectively arranged below the bottom surface of each defoaming oil tank, the outlet of each L-shaped oil outlet pipe is positioned in the tank body, the top surfaces of the defoaming oil tanks are opened and respectively positioned below the circulating filter and the oil return filter, and an oil discharge port is arranged at the lower part of one side wall of the tank body. The invention can eliminate air bubbles in the hydraulic oil and avoid impact on hydraulic devices such as a hydraulic pump, a hydraulic cylinder and the like.

Description

Oil tank hydraulic oil fire fighting equipment

Technical Field

The invention relates to a defoaming device for hydraulic oil in an oil tank, belonging to an auxiliary device for a pickling outlet hydraulic station in a steel rolling mill.

Background

The phenomena of 'cavitation' and 'cavitation' exist for a long time in a cold rolling branch pickling outlet hydraulic station of a steel rolling mill. Circulating oil and system return oil enter the oil tank through the circulating filter and the return oil filter to impact the liquid level to generate a large amount of bubbles in the area of the oil suction port. Air bubbles generated by the oil return impacting liquid level enter the oil absorption area through the partition plate filter screen. The hydraulic oil containing bubbles enters the pump, and abnormal vibration and noise are generated. In the production process, the hydraulic plunger pump is easy to lose pressure, so that the hydraulic shear is stopped, the coil stripping trolley is impacted when in operation, and the pickling coil shakes. After the hydraulic station is restarted, a cavity of a pump body has no pressure, the pump body can be started after manual oil filling and a disc pump, the pressure is unstable, and the fluctuation is between 60bar and 100 bar. The cavitation phenomenon of the hydraulic pump is serious, the pump is frequently jumped and the pressure is lost, so that the shutdown accident is sudden, the shutdown maintenance task is heavy, and abnormal operation and potential safety hazard are generated. The main reason is that the hydraulic station does not adopt effective isolation measures in an oil tank due to the fact that the circulation, the oil return filter and the overflow pipeline of the hydraulic station, and oil impacts a liquid level to generate a large amount of bubbles to cause a great deal of damage to a hydraulic system.

Disclosure of Invention

The invention aims to provide a defoaming device for hydraulic oil in an oil tank, which can eliminate bubbles in the hydraulic oil and avoid impact on hydraulic devices such as a hydraulic pump and a hydraulic cylinder.

Realize an oil tank hydraulic oil fire fighting equipment of above-mentioned purpose, including the box, the baffle filter screen through vertical arrangement in the box middle part is divided into the two parts of mutual intercommunication with the box inner space, is setting up circulating filter and oil return filter on the top surface of box respectively, the two parts box in set up two defoaming oil tanks through the landing leg respectively, set up an L respectively under each defoaming oil tank bottom surface and appear out oil pipe, L appears out oil pipe export and is located the box in, defoaming oil tank top surface opens and is located respectively circulating filter and oil return filter's below, a box lateral wall lower part set up the oil drain hole.

The defoaming box has the functions of receiving and storing circulating oil and return oil, isolating hydraulic oil containing bubbles formed by impact from the oil tank, and separating out the bubbles in the hydraulic oil to avoid the phenomenon of cavitation in the hydraulic oil containing bubbles entering the oil tank and the pump. 2. The oil discharge pipe is connected with the defoaming box 1 through a hard pipe, and hydraulic oil separated from bubbles and not containing bubbles in the oil tank flows into the oil tank through self weight during the function of the oil discharge pipe, so that the impact is avoided.

Circulating oil impacts hydraulic oil in the defoaming oil tank, and generated bubbles are stored in the defoaming oil tank and slowly separated out. The oil mixed with the bubbles is separated from the oil in the oil tank, and is prevented from entering the hydraulic pump through the oil discharge port. The other set of defoaming oil tank is arranged below the oil return filter; and in the same way, the hydraulic oil isolated from the mixed bubbles enters the hydraulic plunger pump through the partition filter screen and the oil suction pipe. The bubble-free hydraulic oil flows into the oil tank through the L-shaped oil outlet pipe by means of self weight. Thereby avoiding the systematic damage caused by the phenomena of 'cavitation' and 'cavitation' of the hydraulic pump. According to the size of the inside of the oil tank and the size of the filter, the corresponding rectangular defoaming box is welded and manufactured by steel plates, the oil discharge pipe with the elbow is manufactured by the hard pipe and is connected with the defoaming box to form a finished product of the defoaming device, the finished product is placed below the filter in the oil tank, and the finished product is fixed at the bottom of the oil tank by angle steel supporting legs. The defoaming box is used for receiving circulating oil and return oil, isolating hydraulic oil containing bubbles and separating the bubbles, and the oil discharge pipe is used for guiding the hydraulic oil without the bubbles to the oil tank. After the device is put into use, abnormal vibration and noise do not occur in 6 plunger hydraulic pumps, the pressure of the hydraulic pumps is stabilized at 85bar, the hydraulic cylinders operate stably without impact and shaking, and the hydraulic pumps are cavitation-free and cavitation-free. The hydraulic pump is started again after being stopped, and the pump can be started smoothly without coiling and filling oil into the pump.

Drawings

The present invention will be described in further detail below with reference to the accompanying drawings.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention.

Detailed Description

The utility model provides an oil tank hydraulic oil fire fighting equipment, as shown in figure 1, 2, including the box, the box middle part is interior to divide into the two parts of mutual intercommunication through vertical arrangement's baffle filter screen 4, is setting up circulating filter 1 and oil return filter 2 on the top surface of box respectively, two parts in the box set up two defoaming oil tanks 3 through landing leg 7 respectively, set up an L shape under each defoaming oil tank bottom surface respectively and go out oil pipe 5, L shape goes out the export of oil pipe 5 and is located the box in, 3 top surfaces of defoaming oil tank open and are located respectively circulating filter 1 and oil return filter 2's below, a box lateral wall lower part set up oil drain hole 6.

Claims

1. The utility model provides an oil tank hydraulic oil fire fighting equipment, includes the box, and the baffle filter screen through vertical arrangement in the box middle part is divided into the two parts of mutual intercommunication with the box inner space, is setting up circulating filter and oil return filter, characterized by on the top surface of box respectively: two parts box in set up two defoaming oil tanks through the landing leg respectively, set up an L shape oil pipe respectively under each defoaming oil tank bottom surface, L shape oil pipe export is located the box in, defoaming oil tank top surface opens and is located respectively circulating filter and oil return filter's below, a box lateral wall lower part set up the oil drain port.