Electric active oil-gas separator

Abstract

The invention discloses an electric active oil-gas separator, which belongs to the field of diesel engine equipment and comprises an oil-gas separation bin consisting of a separation impeller and an inner wall, the separation impeller is fixed on a rotating shaft, an isolation shell for blocking oil gas is arranged at the top of the oil-gas separation bin, and a through hole for the rotating shaft to penetrate through is formed in the middle of the isolation shell. An aluminum alloy end cover is arranged on the isolation shell, a concave hole is formed in the middle of the front face of the aluminum alloy end cover, a stator coil and a control circuit board are fixedly arranged on the periphery of the concave hole, two stages of the stator coil are welded to the control circuit board, and a permanent magnet rotor is arranged outside the rotating shaft in a sleeving mode and located on the inner side of the stator coil in a matched mode. According to the invention, the motor is adopted for driving, and meanwhile, the problems of motor heat dissipation and severe working environment can be effectively solved.

Description

Technical Field

[0001] The invention relates to the field of diesel engine equipment, in particular to an electric active oil-gas separator. Background Art

[0002] Active oil-gas separators rely on their own separation impellers to rotate at high speed, throwing the droplets in the oil and gas to the inner wall, thereby achieving oil-gas separation. Because of its extremely high oil-gas separation efficiency, it is widely used in high-power diesel engines, and the oil-gas separation effect is remarkable. The separation impeller needs to be driven by external force. The power source of traditional oil-gas separators mostly relies on hydraulic or pneumatic pressure, that is, relying on liquid argon or air pressure to drive the shaft in the oil-gas separation chamber. Hydraulic and pneumatic drive requires an extra set of pipelines and control valves on the engine to drive, which is difficult to implement and has a high failure rate. The use of motor drive can reduce costs and can control the shaft speed, thereby achieving more economical oil-gas separation control. Electric oil-gas separators are an ideal development direction for oil-gas separators. However, because the oil-gas separators for engines have problems such as harsh use conditions, high working environment temperature, and corrosive oil and gas, and the existing motor structure has a low speed, the low speed will make the oil-gas separator efficiency relatively low; at the same time, the existing motor has poor oil corrosion resistance and cannot be used for engine oil and gas corrosion, so it is difficult for oil-gas separators to be directly driven by motors. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an electric active oil-gas separator, which can be driven by a motor, has a fast rotation speed and high separation efficiency, and can block oil and gas and avoid corrosive effects.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an electric active oil-gas separator, including an oil-gas separation chamber composed of a separation impeller and an inner wall, the separation impeller is fixed on the rotating shaft, and an isolation shell for blocking oil and gas is arranged on the top of the oil-gas separation chamber, a through hole for the rotating shaft to pass through is arranged in the middle of the isolation shell, an aluminum alloy end cover is arranged on the isolation shell, a concave hole is arranged in the middle of the front of the aluminum alloy end cover, a stator coil and a control circuit board are fixedly arranged on the periphery of the concave hole, the stator coil is welded to the control circuit board at two stages, a permanent magnet rotor is arranged on the outer sleeve of the rotating shaft, the permanent magnet rotor is located on the inner side of the stator coil for matching, and a heat sink and a power socket are arranged on the back of the aluminum alloy end cover.

[0005] A further improvement of the technical solution of the present invention is that a rotating shaft sleeve is arranged in the concave hole, the rotating shaft sleeve is pressed into the concave hole with interference, a bearing is pressed into the opening of the rotating shaft sleeve with interference, and the bearing sleeve is arranged on the rotating shaft head.

[0006] A further improvement of the technical solution of the present invention is that the aluminum alloy end cover is glued to the front of the isolation shell by high-temperature thermal conductive glue, the control circuit board is glued to the front of the aluminum alloy end cover by high-temperature thermal conductive glue, and the stator coil is fastened to the front of the aluminum alloy end cover by 4 bolts.

[0007] A further improvement of the technical solution of the present invention is that the control circuit board is an H-bridge motor driving circuit board.

[0008] The further improvement of the technical solution of the present invention is that the permanent magnet rotor is made of samarium-cobalt rare earth metal, the isolation shell is made of nylon material, and the rotating shaft sleeve is made of steel.

[0009] The further improvement of the technical solution of the present invention is that the nylon material of the isolation shell is PA66 nylon material, and the chemical components and weight percentages are: polyhexamethylene adipamide: 45-46%, polycaprolactam: 19-20%, glass fiber: 30-31%, silane coupling agent: 0.5-1.0%, glyceryl monostearate: 0.1-0.2%, alkane wax: 0.3-0.5%, triphenylphosphine oxide: 0.4-0.5%, amide wax: 0.1-0.2%, tri(2,4-di-tert-butyl)phenyl phosphite <0.1%, carbon black: 1.0-1.2%, cuprous iodide: 0.3-0.4%, and potassium bromide: 0.2-0.3%.

[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is: by adopting a built-in DC brushless motor, the speed can reach 12000r / min, the high-speed rotation oil-gas separation efficiency is high, and by setting an isolation shell, the motor and oil and gas can be effectively isolated, the motor can be protected from oil and gas corrosion, the motor working environment is improved, and the motor service life is extended. By integrating the control circuit board, stator coil, isolation shell and aluminum alloy end cover with a heat sink, the motor heat dissipation problem can be effectively solved, the adaptability to the working environment temperature can be improved, and the control circuit board can be cooled to the maximum extent. When set to an electric type, the motor can be connected to the engine controller for communication, the engine information can be collected, the speed can be intelligently controlled, and the economy can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a schematic diagram of the structure of the electric active oil-gas separator of the present invention;

[0013] Figure 2It is a schematic diagram of the aluminum alloy end cover structure;

[0014] Figure 3 It is a schematic diagram of the front of the aluminum alloy end cover;

[0015] Figure 4 This is a schematic diagram of the back of the aluminum alloy end cover;

[0016] Figure 5 It is a schematic diagram of the side of the aluminum alloy end cover;

[0017] Figure 6 This is a schematic diagram of the other side of the aluminum alloy end cover;

[0018] Figure 7 It is a schematic diagram of the explosion structure of the isolation shell and the end cover;

[0019] Figure 8 It is the circuit diagram of the control circuit board;

[0020] Among them, 1. rotating shaft, 2. isolating shell, 3. aluminum alloy end cover, 4. stator coil, 5. control circuit board, 6. permanent magnet rotor, 7. rotating shaft sleeve, 8. bearing, 9. concave hole. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with embodiments:

[0022] like Figure 1 The figure shows a schematic diagram of the structure of an electric active oil-gas separator, including an oil-gas separation chamber composed of a separation impeller and a matching inner wall. The separation impeller is fixed on a rotating shaft 1. In the oil-gas separation chamber, the separation impeller can rotate at high speed to throw the droplets in the oil and gas toward the inner wall, which is the process of oil-gas separation. An isolation shell 2 for blocking oil and gas is arranged on the top of the oil-gas separation chamber. The isolation shell 2 is a bowl-shaped structure with a truncated cone-shaped protrusion at the bottom and a certain space inside. A through hole for the rotating shaft 1 to pass through is arranged in the middle of the isolation shell 2, and a circle of connecting planes is arranged along the edge of the top of the isolation shell 2. An aluminum alloy end cover 3 is arranged on the isolation shell 2, as shown in FIG. Figure 2-6 The front edge of the aluminum alloy end cover 3 shown in the figure has a circle of protrusions corresponding to the connection plane. The connection plane of the isolation shell 2 is adhered to the front edge protrusion of the aluminum alloy end cover 3 through high-temperature thermal conductive glue. The interior surrounded by the edge protrusion of the aluminum alloy end cover 3 is provided with several accessories, including a concave hole 9 in the middle of the front of the aluminum alloy end cover 3, and the stator coil 4 and the control circuit board 5 are fixedly arranged outside the concave hole. The stator coil 4 is welded on the control circuit board 5 at two levels. The control circuit board is as shown in FIG. Figure 8As shown, it is an H-bridge motor drive circuit board. The control circuit board 5 is glued to the front of the aluminum alloy end cover 3 by high-temperature thermal conductive glue, and the stator coil 4 is fastened to the front of the aluminum alloy end cover 3 by 4 bolts. The stator coil 4 is welded to the control circuit board 5 in two stages. A permanent magnet rotor 6 is fixedly sleeved outside the rotating shaft 1. The permanent magnet rotor 6 is located on the inner side of the stator coil 4 and is adapted to the stator coil 4. The permanent magnet rotor 6 is a samarium cobalt rare earth metal. When the stator coil 4 is powered on in different switching directions, the magnetic field generated by the stator coil 4 will pull the permanent magnet rotor 6 to rotate continuously, thereby driving the rotating shaft 1 fixedly sleeved inside the permanent magnet rotor 6 to rotate, thereby realizing the motor drive of the oil-gas separator. A number of heat sinks and power sockets are arranged on the back of the aluminum alloy end cover 3. This integrated design can cool the control circuit board to the greatest extent, effectively solve the heat dissipation problem, and improve the adaptability to the working environment temperature. Because the strength of the aluminum alloy end cover 3 is generally good, such as Figure 7 As shown, a steel shaft sleeve 7 is arranged in the concave hole 9 on the front of the aluminum alloy end cover 3, which is used to carry the head of the shaft 1. The shaft sleeve is a cylindrical structure with one end open. The shaft sleeve 7 is pressed into the concave hole 9 by interference, and a bearing is pressed into the opening of the shaft sleeve 7 by interference. The bearing sleeve is arranged on the head of the shaft 1, that is, when the head part of the shaft 1 after passing through the isolation shell 2 extends into the shaft sleeve 7 in the concave hole 9 on the front of the aluminum alloy end cover 3, and extends into the bearing. When the shaft 1 rotates, the aluminum alloy end cover 3 and its shaft sleeve 7 will not rotate due to the presence of the bearing, thereby ensuring the stability of the aluminum alloy end cover 3.

[0023] In order to better isolate the oil and gas and have good anti-corrosion performance, the isolation shell 2 adopts PA66 nylon material. The chemical components and their weight percentage contents are as follows: polyhexamethylene adipamide: 45-46%, polycaprolactam: 19-20%, glass fiber: 30-31%, silane coupling agent: 0.5-1.0%, glyceryl monostearate: 0.1-0.2%, alkane wax: 0.3-0.5%, triphenylphosphine oxide: 0.4-0.5%, amide wax: 0.1-0.2%, tri(2,4-di-tert-butyl)phenyl phosphite <0.1%, carbon black: 1.0-1.2%, cuprous iodide: 0.3-0.4%, potassium bromide: 0.2-0.3%.

[0024] The integrated design of the control circuit board, stator coil, isolation shell and aluminum alloy end cover in this application can effectively solve the problem of motor heat dissipation and improve the temperature adaptability of the working environment; the isolation shell material has the advantages of high temperature resistance, oil and gas resistance, and oxidation resistance, which effectively solves the problem of harsh motor operating environment; at the same time, the control circuit board and the engine controller can be connected for communication to collect engine information, realize intelligent control of motor speed, realize intelligent control of oil and gas separation, and improve economy.

[0025] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An electric active oil-gas separator, comprising an oil-gas separation chamber composed of a separation impeller and an inner wall, wherein the separation impeller is fixed on a rotating shaft (1) and is characterized in that: An isolation shell (2) for blocking oil and gas is arranged on the top of the oil and gas separation bin, a through hole for the rotating shaft (1) to pass through is arranged in the middle of the isolation shell (2), an aluminum alloy end cover (3) is arranged on the isolation shell (2), a concave hole (9) is arranged in the middle of the front of the aluminum alloy end cover (3), a stator coil (4) and a control circuit board (5) are fixedly arranged on the periphery of the concave hole, the stator coil (4) is welded to the control circuit board (5) at two levels, a permanent magnet rotor (6) is arranged on the outer sleeve of the rotating shaft (1), the permanent magnet rotor (6) is located inside the stator coil to match, and a heat sink and a power socket are arranged on the back of the aluminum alloy end cover (3).

2. The electric active oil-gas separator according to claim 1, characterized in that: A rotating shaft sleeve (7) is arranged in the concave hole (9), the rotating shaft sleeve (7) is interference pressed into the concave hole (9), a bearing (8) is interference pressed into the opening of the rotating shaft sleeve (7), and the bearing sleeve (7) is sleeved on the head of the rotating shaft (1).

3. The electric active oil-gas separator according to claim 1, characterized in that: The aluminum alloy end cover (3) is adhered to the front side of the isolation shell (2) by means of high-temperature heat-conducting glue, the control circuit board (5) is adhered to the front side of the aluminum alloy end cover (3) by means of high-temperature heat-conducting glue, and the stator coil (4) is fastened to the front side of the aluminum alloy end cover (3) by means of four bolts.

4. The electric active oil-gas separator according to claim 1, characterized in that: The control circuit board (5) is an H-bridge motor driving circuit board.

5. The electric active oil-gas separator according to claim 1, characterized in that: The permanent magnet rotor (6) is made of samarium-cobalt rare earth metal, the isolation shell (2) is made of nylon material, and the rotating shaft sleeve (7) is made of steel.

6. The electric active oil-gas separator according to claim 4, characterized in that: The nylon material of the isolation shell (2) is PA66 nylon material, and the chemical components and weight percentages are: polyhexamethylene adipamide: 45-46%, polycaprolactam: 19-20%, glass fiber: 30-31%, silane coupling agent: 0.5-1.0%, glyceryl monostearate: 0.1-0.2%, alkane wax: 0.3-0.5%, triphenylphosphine oxide: 0.4-0.5%, amide wax: 0.1-0.2%, tri(2,4-di-tert-butyl)phenyl phosphite <0.1%, carbon black: 1.0-1.2%, cuprous iodide: 0.3-0.4%, and potassium bromide: 0.2-0.3%.

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