CN205087965U - Insulating oily recovery system - Google Patents

Abstract

The utility model discloses an insulating oil recovery system in the technical field of oily sewage treatment. The system includes a float oil collector with an oil collecting tank, an oil outlet is arranged at the bottom of the oil collecting tank, and the oil outlet is connected with the oil suction end of the oil suction pump. Connected with a hose, the oil outlet end of the oil suction pump is provided with a vacuum filter tank and an oil-water separation box. The beneficial effects of the utility model are: by setting a float oil collector on the surface of the waste water, the oil layer on the surface of the waste water is collected by the float oil collector, and then discharged by the oil suction pump, and finally separated and purified by the oil-water separation box. The method of pumping oil and then draining water can reduce the impurities sucked in, improve the purity of the oil, and simplify the subsequent treatment process. The whole set of equipment has a simple structure and can be set to be mobile, which is more flexible and convenient to use.

Description

Insulating Oil Recovery System

technical field

The utility model relates to the technical field of oily sewage treatment, in particular to a system for recovering insulating oil.

Background technique

Large-scale substations generally use oil-immersed transformers. When transformers and other oil-filled electrical equipment fail, the insulating oil will overflow, which will pollute the environment and even cause fires. Therefore, an emergency oil pool will be set up near the transformer to store the discharged insulating oil. Due to the structural design of the hydropower station, the leaked or intentionally discharged insulating oil will mix with water and flow into the accident oil pool. After the accident oil pool settles, two layers of oil and water will be formed. The upper part is oil and the lower part is water. The insulating oil needs to be recycled. , and the water is discharged after treatment.

In the past, the recovery system of insulating oil generally adopts two methods. One is to discharge the waste water in the accident oil pool by gravity first, and then use the oil pump to recover the oil. This process needs to measure the thickness of the oil layer in advance; the other is to install a pump next to the accident oil pool First, the oil-water pump is used to extract the oily waste water, and then the oil pump is used to recover the remaining oil. The disadvantage of this method is that the equipment cost is high. Either way, the method of discharging waste water is adopted first, the purpose is to ensure the purity of the recovered oil and facilitate the treatment of subsequent processes, but these two methods often cause the amount of discharged sewage oil to exceed the standard, so they are gradually being increasingly stringent. prohibited by environmental requirements. If the method of extracting the surface oil layer is adopted first, although some waste water will be sucked in, resulting in low purity of the oil recovered for the first time, and it is not easy to control, but it is beneficial to protect the environment and save costs.

Utility model content

In order to overcome the shortcomings of the existing insulating oil recovery system, which adopts the method of first draining and then pumping oil, resulting in the amount of discharged waste water exceeding the standard and high cost, the technical problem to be solved by this utility model is: to provide a method of first extracting surface oil and then draining water. insulating oil recovery system.

The technical solution adopted by the utility model to solve the technical problem is: the insulating oil recovery system includes a float oil collector and an oil suction pump, the float oil collector has an oil collection tank, and an oil outlet is provided at the bottom of the oil collection tank, and the oil outlet The oil port is connected with the oil suction end of the oil suction pump with a hose.

Further, the oil outlet end of the oil suction pump is provided with an oil-water separation box.

Further, a vacuum filter tank is provided between the oil suction pump and the oil-water separation box.

Further, the oil suction pump is a lobe rotor pump.

Further, the float oil collector includes an oil collection tank and a buoy, the top of the oil collection tank is open, and the bottom is provided with an oil outlet, and the buoys include at least three and are evenly arranged around the oil collection tank.

Further, a filter screen is provided at the top opening of the oil collection tank.

The beneficial effects of the utility model are: by setting a float oil collector on the surface of the waste water, the oil layer on the surface of the waste water is collected by using the float oil collector, and then discharged by the oil suction pump, and finally separated and purified by the oil-water separation box. The method of pumping oil and then draining water can reduce the impurities sucked in, improve the purity of the oil, and simplify the subsequent treatment process. The whole set of equipment has a simple structure and can be set to be mobile, which is more flexible and convenient to use.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Marked in the picture, 1-float oil collector, 2-suction pump, 3-hose, 4-oil-water separation box, 5-vacuum filter tank, 6-accident oil pool, 11-oil collection tank, 12-oil outlet , 13-floor, 14-filter, 21-suction end, 22-oil outlet.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the utility model comprises a float oil collector 1 and an oil suction pump 2, and the float oil collector 1 has an oil collecting tank 11, and the bottom of the oil collecting tank 11 is provided with an oil outlet 12, and the oil outlet 12 is connected to the The oil suction end 21 of the oil suction pump 2 is connected with a hose 3 . When in use, the float oil collector 1 is placed on the liquid surface of the emergency oil pool 6, the oil on the surface of the waste water will first enter the oil collection tank 11, and then the oil is discharged from the oil outlet 12 at the bottom with the oil suction pump 2, and the soft water is set. The purpose of the pipe 3 is to enable the float oil collector 1 to descend with the drop of the liquid level without being restricted by the hose 3 .

As the surface oil is gradually discharged and the oil layer becomes thinner and thinner, some water will inevitably enter the oil collection tank 11 of the float oil collector 1, resulting in the discharged oil containing waste water, so the oil discharge of the oil suction pump 2 The end 22 is provided with an oil-water separation box 4 for separating oil and waste water and improving the purity of recovered oil.

In order to further improve the purity of the final recovered oil and reduce the workload of the oil-water separation box 4, a vacuum filter tank 5 can be installed between the oil-water separation box 4 and the oil suction pump 2. The vacuum filter tank 5 can initially separate the oil and water, and filter out Other suspended impurities contained in the oil and water are pre-treated for the subsequent oil-water separation box 4.

The oil suction pump 2 is preferably a cam rotor pump. This positive displacement pump is below 1000m above sea level, and its self-priming height can reach 7-8m. Due to its rotor structure, the flow channel is large, which can avoid oil circuit blockage.

The float oil collector 1 includes an oil collection tank 11 and a buoy 13 , the top of which is open, and an oil outlet 12 is provided at the bottom of the oil collection tank 11 , and at least three buoys 13 are evenly arranged around the oil collection tank 11 . The purpose of setting at least three buoys 13 is to ensure the stability of the entire float oil receiver 1. During use, the height of the buoys 13 and the oil collection tank 11 needs to be adjusted according to the thickness of the oil layer, so that the surface oil layer can enter smoothly from the opening on the top of the oil collection tank 11. In the oil collection tank 11.

Because there may be some floating impurities on the surface of the oil layer, in order to prevent impurities from entering the oil collecting tank 11, a filter screen 14 can be set at the opening of the oil collecting tank 11 to play a preliminary purification effect.

Compared with the traditional recovery system that first drains water and then pumps oil, the utility model has more thorough recovery, less environmental pollution, simple equipment structure, can be set as mobile, low cost, more flexible to use, and has a good practicality.

Claims (6)

1. The insulating oil recovery system is characterized in that it includes a float oil collector (1) and an oil suction pump (2), the float oil collector (1) has an oil collection tank (11), and the bottom of the oil collection tank (11) is provided with An oil outlet (12), the oil outlet (12) is connected with the oil suction end (21) of the oil suction pump (2) with a hose (3). 2. The insulating oil recovery system according to claim 1, characterized in that: the oil outlet end (22) of the oil suction pump (2) is provided with an oil-water separation box (4). 3. The insulating oil recovery system according to claim 2, characterized in that: a vacuum filter tank (5) is provided between the oil suction pump (2) and the oil-water separation box (4). 4. The insulating oil recovery system according to claim 1, 2 or 3, characterized in that: the oil suction pump (2) is a lobe rotor pump. 5. The insulating oil recovery system according to claim 1, 2 or 3, characterized in that: the float oil collector (1) includes an oil collection tank (11) and a buoy (13), and the oil collection tank (11) The top is open, the bottom is provided with an oil outlet (12), and the buoys (13) include at least three and are evenly arranged around the oil collection tank (11). 6. The insulating oil recovery system according to claim 5, characterized in that: a filter screen (14) is provided at the top opening of the oil collection tank (11).