阅读说明：本技术 一种绝缘油脱气处理装置 (Insulating oil degassing treatment device ) 是由 邱方程 刘通 郭新良 何运华 李寒煜 胡发平 郑欣 刘荣海 初德胜 于 2021-11-04 设计创作，主要内容包括：本发明公开了一种绝缘油脱气处理装置,包括基座和进油泵,所述底座的上表面依次设置有进油箱、板式塔、充气装置和集油桶,所述进油箱的出口与进油泵的进口连通,所述进油箱、板式塔、充气装置和集油桶之间均通过进油泵、出油泵和管道依次进行连通,所述板式塔包括塔板、内部进气管道和压力表,所述板式塔的上端与真空泵连接,所述板式塔的外表面设置有支撑架。通过设计的板式塔和充气装置,在对绝缘油进行充气处理时通过真空泵对板式塔进行抽真空,从而改变绝缘油中的气体溶解度来提高脱气效率,加强板式塔的脱气效果,有效的降低绝缘油的含气量。(The invention discloses an insulating oil degassing treatment device which comprises a base and an oil inlet pump, wherein an oil inlet tank, a plate tower, an air charging device and an oil collecting barrel are sequentially arranged on the upper surface of the base, an outlet of the oil inlet tank is communicated with an inlet of the oil inlet pump, the oil inlet tank, the plate tower, the air charging device and the oil collecting barrel are sequentially communicated through the oil inlet pump, an oil outlet pump and a pipeline, the plate tower comprises a tower plate, an internal air inlet pipeline and a pressure gauge, the upper end of the plate tower is connected with a vacuum pump, and a support frame is arranged on the outer surface of the plate tower. Through the plate tower and the aerating device of design, carry out the evacuation through the vacuum pump to the plate tower when aerifing the processing to insulating oil to change the gas solubility in the insulating oil and improve degasification efficiency, strengthen the degasification effect of plate tower, effectual reduction insulating oil's air content.)

1. An insulating oil degassing treatment apparatus, comprising: the device comprises a base (1), an oil inlet box (2), a plate tower (3), a vacuum pump (4), an air charging device (5), an oil collecting barrel (6), a pipeline (7), a first oil inlet pipe (8), an oil inlet pump (9), a second oil inlet pipe (10), a first oil outlet pipe (11), an air inlet pipeline (12), an oil outlet pump (13) and a second oil outlet pipe (14);

the plate tower (3) is a cavity and comprises: an oil inlet (15), an oil outlet (16), an air inlet (18) and an air outlet (17);

the oil inlet box (2) is connected with an oil inlet pump (9) through a first oil inlet pipe (8);

the oil inlet pump (9) is connected with the oil inlet (15) through a second oil inlet pipe (10);

the air outlet (17) is connected with a vacuum pump (4) through a pipeline (7);

the inflation device (5) is connected with the air inlet (18) through an air inlet pipeline (12);

the oil outlet (16) is connected with an oil outlet pump (13) through a first oil outlet pipe (11);

the oil outlet pump (13) is connected with the oil collecting barrel (6) through a second oil outlet pipe (14).

2. The degassing treatment apparatus for insulating oil according to claim 1, wherein: the gas filled by the inflation device (5) is inert gas.

3. The degassing treatment apparatus for insulating oil according to claim 1, wherein: the air charging device (5) comprises an air bottle frame (24), a main air inlet valve (25), a first air bottle (22), a second air bottle (23) and two air bottle fixing seats (26);

the gas bottle rack (24) is a hollow rack body;

the total air inlet valve (25) is arranged on the outer side surface of the air bottle frame (24) and is connected with the first air bottle (22) and the second air bottle (23) through a pipeline;

the two gas cylinder fixing seats (26) are arranged at the lower end inside the gas cylinder frame (24);

a first gas cylinder (22) and a second gas cylinder (23) are arranged inside the gas cylinder frame (24) and are respectively connected to two gas cylinder fixing seats (26).

4. The degassing treatment apparatus for insulating oil according to claim 1, wherein: also comprises a plurality of tower plates (20); the plurality of tower plates (20) are arranged inside the plate tower (3), and one end of each tower plate (20) is fixedly connected with the inner surface of the plate tower (3); the plurality of trays (20) is removable.

5. The degassing treatment apparatus for insulating oil according to claim 4, wherein: the tray (20) is perpendicular to the inner surface of the tray column (3); the cross section of the connection part of the tower plate (20) vertical to the inner surface of the plate tower (3) is arc-shaped.

6. The degassing treatment apparatus for insulating oil according to claim 1, wherein: the base (1) is fixedly connected with the oil inlet box (2) through bolts, and wheels are arranged below the base (1).

7. The degassing treatment apparatus for insulating oil according to claim 1, wherein: the base (1) is respectively fixedly connected with the oil inlet pump (9) and the oil outlet pump (12), and a fixing plate is respectively arranged at the joint.

8. The degassing treatment apparatus for insulating oil according to claim 1, wherein: the plate tower (2) is fixed on a plate tower support, and the base (1) is connected with the plate tower support.

Technical Field

The application relates to the field of separation of dissolved gas in transformer insulating oil, in particular to a degassing treatment device for insulating oil.

Background

The transformer insulating oil plays insulating and cooling roles in oil-filled equipment in the operation of a transformer substation, and especially plays an important insulating and protecting role in a transformer added with the insulating oil. The content of characteristic gas in the insulating oil is measured by performing a chromatographic analysis experiment on the insulating oil, so that the operation condition of equipment can be reflected. The insulating oil is gradually aged and decomposed due to electricity and heat in the transformer, and components such as methane (CH4), ethylene (C2H4), ethane (C2H6), acetylene (C2H2), hydrogen (H2), carbon monoxide (CO), and carbon dioxide (CO2) are generated, and these gases induce the failure of the transformer. Along with the continuous evolution of the fault of the transformer, the total amount of various gases generated by the decomposition phenomenon of the insulating oil is more and more, the condition that the gas production is greater than the dissolved amount can be finally generated, a part of the gases can be released from the insulating oil as free gases, the released gases can influence the normal operation of the transformer, and even accidents can be caused.

How to precipitate the gas in the insulating oil and recycle the insulating oil is an important research topic. The common degassing method for the transformer oil at present is a vacuum oil filtering and degassing method, which needs heating and repeated degassing and has high energy consumption and long time consumption. The membrane degassing method is a method for separating and enriching gas and liquid by utilizing the difference of dissolution and diffusion of various gases in insulating oil in a membrane. The main use is solid or liquid substance film, and the driving is exerted through the external world, has the shortcoming such as degassing time is long, inefficiency, maintenance cost height. The principle of dissolution equilibrium degassing is based on the law of dalton partial pressure and henry's law, and has the problems of relatively complex operation and device and the like. The capillary column method has short balancing time, simple degree and high equipment cost. The air circulation method has short balancing time, but has high complexity and high equipment cost.

Disclosure of Invention

The application provides an insulating oil degassing treatment device, through adopting the mode of inert gas replacement, realizes gaseous quick replacement and degasification in the transformer oil. The method solves the problems of high energy consumption and low efficiency of the existing method for removing the dissolved gas in the insulating oil.

The application provides an insulating oil degassing treatment device, includes: the device comprises a base, an oil inlet box, a plate tower, a vacuum pump, an air charging device, an oil collecting barrel, a pipeline, a first oil inlet pipe, an oil inlet pump, a second oil inlet pipe, a first oil outlet pipe, an air inlet pipeline, an oil outlet pump and a second oil outlet pipe;

the plate tower is a cavity, including: an oil inlet, an oil outlet, an air inlet and an air outlet are arranged;

the oil inlet tank is connected with the oil inlet pump through a first oil inlet pipe;

the oil inlet pump is connected with the oil inlet through a second oil inlet pipe;

the air outlet is connected with a vacuum pump through a pipeline;

the air charging device is connected with the air inlet through an air inlet pipeline;

the oil outlet is connected with an oil outlet pump through a first oil outlet pipe;

the oil outlet pump is connected with the oil collecting barrel through a second oil outlet pipe.

Preferably, the gas added by the inflating device is inert gas.

Preferably, the inflation device comprises a gas cylinder frame, a main air inlet valve, a first gas cylinder, a second gas cylinder and two gas cylinder fixing seats;

the gas cylinder frame is a hollow frame body;

the main air inlet valve is arranged on the outer side surface of the air bottle frame and is connected with the first air bottle and the second air bottle through a pipeline;

the two gas cylinder fixing seats are arranged at the lower end of the interior of the gas cylinder frame;

the first gas cylinder and the second gas cylinder are arranged inside the gas cylinder frame and are respectively connected to the two gas cylinder fixing seats.

Preferably, the apparatus further comprises a plurality of trays; the plurality of tower plates are arranged inside the plate type tower, and one end of each tower plate is fixedly connected with the inner surface of the plate type tower; the plurality of trays are detachable.

Preferably, the trays are perpendicular to the internal surface of the tray column; the cross-sectional shape of the connection of the tray perpendicular to the inner surface of the tray column is arc-shaped.

Preferably, the base is fixedly connected with the oil inlet box through bolts, and wheels are arranged below the base.

Preferably, the base is respectively and fixedly connected with the oil inlet pump and the oil outlet pump, and a fixing plate is respectively arranged at the joint.

Preferably, the plate tower is fixed on a plate tower bracket, and the base is connected with the plate tower bracket.

According to the technical scheme, the insulating oil is conveyed to the upper-layer tower plate of the plate tower through the designed gas replacement vacuumizing device by the oil inlet pipeline. Multiple air inlet charges are used for gas displacement, thereby increasing the rate of oil degassing. The multilayer column plates arranged in the plate type tower are used for inflating and vacuumizing each layer of column plate liquid layer through the internal pipeline, so that the degassing efficiency can be improved. Because through many experiments, the type of the charging gas is a great important factor influencing the degassing of the insulating oil in the vacuum oil degassing process after the charging. The gas replacement vacuumizing device is the main part of the invention. In the prior art, gas replacement or vacuum oil filtering and degassing are only carried out, and the gas replacement or vacuum oil filtering and degassing are combined for use, so that the dissolved gas in the insulating oil is efficiently removed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of an insulating oil degassing treatment apparatus in the prior art;

FIG. 2 is a schematic structural view of a tray column according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an inflator according to an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of apparatus and methods consistent with certain aspects of the application, as recited in the claims.

The utility model provides an insulating oil degasification processing apparatus, through the mode that adopts inert gas replacement, realize gaseous quick replacement and degasification in the transformer oil. The method solves the problems of high energy consumption and low efficiency of the existing method for removing the dissolved gas in the insulating oil.

To achieve the above object, referring to fig. 1, the present application provides an insulating oil degassing treatment apparatus including: the device comprises a base 1, an oil inlet tank 2, a plate tower 3, a vacuum pump 4, an air charging device 5, an oil collecting barrel 6, a pipeline 7, a first oil inlet pipe 8, an oil inlet pump 9, a second oil inlet pipe 10, a first oil outlet pipe 11, an air inlet pipeline 12, an oil outlet pump 13 and a second oil outlet pipe 14; the plate tower 3 is a cavity, and comprises: an oil inlet 15, an oil outlet 16, an air inlet 18 and an air outlet 17 are arranged; the oil inlet tank 2 is connected with an oil inlet pump 9 through a first oil inlet pipe 8; the oil inlet pump 9 is connected with an oil inlet 15 through a second oil inlet pipe 10; the air outlet 17 is connected with the vacuum pump 4 through a pipeline 7; the inflator 5 is connected with an air inlet 18 through an air inlet pipeline 12; the oil outlet 16 is connected with an oil outlet pump 13 through a first oil outlet pipe 11; the oil outlet pump 13 is connected with the oil collecting barrel 6 through a second oil outlet pipe 14.

Vacuum pump 4 and manometer are installed to the upside of plate tower 3, and 3 downside of plate tower are provided with the liquid level detection sensor, take out the gas in the plate tower 3 when avoiding producing oil. An oil inlet 15 of the oil collecting barrel 6 is formed in the bottom of the oil collecting barrel 6, so that new gas is prevented from being mixed after the insulating oil is degassed.

In a preferred embodiment, the gas added by the inflator 5 is an inert gas. The inert gas includes, but is not limited to, helium, argon, nitrogen, and the like.

In a preferred embodiment, referring to fig. 2, the inflator 5 comprises a cylinder holder 24, a total gas inlet valve 25, a first cylinder 22, a second cylinder 23, two cylinder holders 26; the gas bottle frame 24 is a hollow frame body; the total gas inlet valve 25 is arranged on the outer side surface of the gas cylinder frame 24 and is connected with the first gas cylinder 22 and the second gas cylinder 23 through a pipeline 7; two gas cylinder holders 26 are provided at the lower end inside the gas cylinder frame 24; the first and second gas cylinders 22 and 23 are disposed inside the cylinder holder 24 and are connected to two cylinder holders 26, respectively.

The gas filling device 5 can accommodate two conventional gas cylinders, a first gas cylinder 22 and a second gas cylinder 23. The uninterrupted filling of inert gas is realized by replacing the gas cylinder, and the gas filling and the gas stopping are carried out through the main gas valve. The gas cylinder holder 26 is designed to support the first and second gas cylinders 22 and 23 and to allow the first and second gas cylinders 22 and 23 to be easily detached. The two gas cylinders are designed to be replaced alternately, so that the gas charging device 5 is charged continuously, and the efficiency is improved. In addition, two cylinders may also increase the absolute velocity of the intake air. The processes of inflating and stopping the inflation of the tray tower 3 can be realized by controlling the total air inlet valve 25 on the inflation device 5, and the opening degree of the valve is controlled so as to control the air inlet speed.

In a preferred embodiment, referring to FIG. 3, the apparatus further comprises a plurality of trays 20; the plurality of tower plates 20 are arranged inside the plate tower 3, and one end of each tower plate 20 is fixedly connected with the inner surface of the plate tower 3; the plurality of trays 20 is removable.

The plate column 3 is internally provided with a plurality of layers of plate trays 20 to realize continuous degassing of the insulating oil. Further preferably, the weir provided at the other end of the tray 20 maintains a liquid layer at a height above the tray 20, so that in a preferred embodiment, the tray 20 is perpendicular to the inner surface of the tray column 3; the cross-sectional shape of the junction of the tray 20 perpendicular to the inner surface of the tray column 3 is an arc.

The junction of the tray 20 perpendicular to the inner surface of the tray column 3 may also be called a catch basin. The tower plate 20 is horizontally installed, the liquid receiving disc is connected with the tower plate 20 and the plate tower 3, and the cross section of the liquid receiving disc is arc-shaped, so that splashing during the flowing of the insulating oil is less.

In a preferred embodiment, the base 1 is fixedly connected with the oil inlet tank 2 through bolts, and wheels are arranged below the base 1.

In a preferred embodiment, the base 1 is fixedly connected to the oil inlet pump 9 and the oil outlet pump 13, and a fixing plate is disposed at the connection.

In a preferred embodiment, the plate tower 3 is fixed to a plate tower 3 support, and the base 1 is connected to the plate tower 3 support.

Different on base 1 with 3 direct fixed connection of plate tower, design 3 supports of plate tower can effectively prevent the shake of 3 supports of plate tower because area of contact increases, dismantles easily simultaneously.

The working principle and the using process of the invention are as follows: when the device is used, insulating oil is poured into the oil inlet box 2 and enters the oil inlet box 2 to be stored, the insulating oil is pumped into the plate tower 3 through the oil inlet pump 9, the inflating device 5 inflates inert gas into the insulating oil through the air inlet pipe 7 and the inner pipeline of the plate tower 3 to replace gas dissolved in the insulating oil, and the vacuum pump 4 pumps the replaced gas and part of the flushed inert gas in the insulating oil through the pipeline 7. Form the liquid layer of take the altitude on the inside column plate 20 of tray column 3, a plurality of column plates have improved the double-phase area of contact of gas-liquid, insulating oil gets into tray column 3 through oil inlet 15 and can now upper column plate carry out gas replacement, continue to carry insulating oil to tray column 3 through oil feed pump 9, the liquid level height of insulating oil can exceed the overflow plate on the column plate 20, can follow the drain pipe flow down the liquid receiving tray of lower floor column plate after that, the inside dissolved gas of insulating oil flow through behind the three-layer column plate can descend by a wide margin, because the multilayer column plate sets up that its tolerance of insulating oil does not flow through one deck column plate will reduce, can realize incessant degasification of insulating oil, last insulating oil is remitted the bottom of tray column 3, through with go out among oil pump 13 transport to sump oil bucket 6.

The experiment proves that: the gas content of the original fresh oil is 7.92%, the gas content of the fresh oil after being pumped by a vacuum pump is 5.42%, the gas content of the fresh oil after being pumped by helium and the vacuum pump is 1.84%, the gas content of the fresh oil after being pumped by argon and the vacuum pump is 5.34%, and the gas content of the fresh oil after being pumped by nitrogen and the vacuum pump is 6.28%.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.