Air inlet system of variable frequency generator set

Abstract

The utility model discloses an air inlet system of a frequency conversion generator set, which belongs to the technical field of energy and power engineering and comprises a generator set frame, partition plates are mounted on two sides of the generator set frame, and two connecting frames are fixedly connected to one end of the generator set frame close to the bottom. A protective cover is installed between the two connecting frames, an inverter is installed in the protective cover, a power air inlet mechanism is arranged at the position, close to the inverter, in the generator set rack, the brand new inverter cooling structure design is adopted, heat generated by working of the inverter is taken away through the power air inlet mechanism, the compact structure is utilized, and the cooling efficiency of the generator set is improved. According to the cooling device for the inverter, the heat generated by the operation of the inverter can be easily adsorbed into the cooling host, and the heat is digested by the cooling host and finally discharged, so that the cooling efficiency can be effectively improved, and the long-time operation of the inverter is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of energy and power engineering, in particular to an air intake system of a variable frequency generator set. Background Art

[0002] Diesel variable frequency generator sets are usually used to provide stable backup power, and the inverter is the core equipment that converts the DC power generated by the generator into AC power. However, a lot of heat will be generated in this process, so an effective cooling system is the key to ensuring the normal operation of the inverter. The design and operation of the air intake system of the variable frequency generator set is crucial to the stability and reliability of the entire power generation system. By adopting a reasonable cooling system, the operating temperature of the inverter can be effectively reduced, its performance and life can be improved, and the power generation system can be ensured to operate normally under various working conditions, providing reliable power support for industrial production and emergency situations.

[0003] Traditional diesel variable frequency generators use the air intake of the motor to extract the heat generated by the inverter. However, due to structural problems, the air intake of the motor is insufficient, resulting in low cooling efficiency. If the heat generated by the inverter is not evacuated in time, the temperature of the inverter and the diesel variable frequency generator will be too high, affecting the power generation efficiency of the diesel variable frequency generator and damaging parts. The front and rear protective covers of some inverters have complex structures and high production costs. When the front and rear protective covers of the inverter need to be replaced, it takes a lot of time and manpower for the staff, affecting the overall power generation efficiency of the diesel variable frequency generator.

[0004] Therefore, there is an urgent need to provide an air intake system for a variable frequency generator set to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the traditional diesel variable frequency generator uses the air intake of the motor to extract the heat generated by the operation of the inverter. However, due to structural problems, the air intake of the motor is insufficient, resulting in low cooling efficiency. If the heat generated by the operation of the inverter cannot be evacuated in time, the temperature of the inverter and the diesel variable frequency generator will be too high, affecting the power generation efficiency of the diesel variable frequency generator and damaging parts. The front and rear protective covers of some inverters have complex structures and high production costs. When the front and rear protective covers of the inverter need to be replaced, a lot of time and manpower of the staff are consumed, affecting the overall power generation efficiency of the diesel variable frequency generator.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an air intake system for a variable frequency generator set, including a generator set frame, partitions are installed on both sides of the generator set frame, one end of the generator set frame is fixedly connected to two connecting frames at the bottom position, a protective cover is installed between the two connecting frames, one side of the two connecting frames is respectively provided with two protective cover connection ports and inverter connection ports, and an inverter is installed inside the protective cover;

[0007] A power air inlet mechanism is arranged inside the generator set frame near the inverter position, and a motor air inlet is arranged on one side of the power air inlet mechanism.

[0008] The utility model is further configured as follows: the generator set frame is made of high-strength steel.

[0009] Through the above technical solution, high-strength steel has higher yield strength and tensile strength, can bear the overall weight of the unit as well as the vibration and load during operation, and ensure the stability and safety of the generator frame under various working conditions. Choosing high-strength steel to make the generator frame can achieve multiple benefits such as lightweight design, cost reduction, and extended service life while ensuring structural strength.

[0010] The utility model is further configured as follows: the protective cover adopts a semi-enclosed structure.

[0011] Through the above technical solution, the semi-enclosed structure can protect the internal components of the inverter to a certain extent, and at the same time use external heat sinks or heat dissipation structures to dissipate heat, thereby improving the heat dissipation effect of the inverter, effectively reducing the operating temperature of the inverter, and improving overall reliability.

[0012] The utility model is further configured as follows: threaded holes corresponding to the inverter connection ports are provided at the four corners of the inverter.

[0013] Through the above technical solution, the setting of the threaded holes can make it more convenient and quick for installers to install the inverter. The inverter can be simply fixed on the bracket through the threaded holes, reducing the workload and time during the installation process and improving the installation efficiency.

[0014] The utility model is further configured as follows: the outer wall of the inverter is fitted to the inner wall of the protection cover.

[0015] Through the above technical solution, the protective cover can effectively isolate the internal and external environments of the inverter, prevent dust, moisture and other foreign substances from entering the inverter, protect the safe operation of internal electronic components and circuit boards, and reduce the occurrence rate of failures. The close fit between the two can improve the heat dissipation effect of the inverter, make it easier for heat to be transferred to the surface of the protective cover, increase the heat dissipation area, improve the heat dissipation efficiency, effectively reduce the operating temperature of the inverter, and extend the life of the equipment.

[0016] The utility model is further configured as follows: the power air intake mechanism includes a cooling main unit installed inside the generator set frame, the front end of the cooling main unit is fixedly connected to a power air intake shell, the front end of the power air intake shell is provided with a power air inlet at a center position, an inlet fan is installed inside the cooling main unit near the power air inlet position, one side of the cooling main unit is fixedly connected to a power air outlet guide plate at a top position, and one side of the cooling main unit is provided with a motor air outlet.

[0017] Through the above technical solution, the heat generated by the inverter will be absorbed by the inlet fan and enter the cooling host for subsequent cooling and purification, preventing the heat generated by the inverter from not being taken away in time, which will affect the operation of the inverter and the entire diesel variable frequency generator set.

[0018] The utility model is further configured as follows: the cooling main unit is composed of an air inlet duct, a filtering device, and an air outlet device.

[0019] Through the above technical solution, the filtering device can prevent dust, impurities and other particles from entering the interior of the cooling host, protect internal components from pollution and wear, and extend the service life of the equipment. Through the air outlet device, the cooling host can discharge filtered clean air to ensure the quality of the air outlet and avoid pollution to the surrounding environment.

[0020] The beneficial effects of the utility model are as follows:

[0021] 1. The utility model adopts a new inverter cooling structure design, uses the power air intake mechanism to take away the heat generated by the inverter, and uses a compact structure to easily absorb the heat generated by the inverter into the cooling host, which digests the heat and finally discharges it, which can effectively improve the cooling efficiency and ensure the long-term operation of the inverter;

[0022] 2. The utility model adopts a semi-enclosed inverter cover structure. The semi-enclosed structure can protect the internal components of the inverter to a certain extent. At the same time, it uses external heat sinks or heat dissipation structures to dissipate heat, thereby improving the heat dissipation effect of the inverter, effectively reducing the operating temperature of the inverter, and improving the overall reliability. The cooling effect of the inverter is better, and the installation and maintenance are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 It is a side view of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the inverter of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the protective cover of the utility model;

[0027] Figure 5 It is a schematic diagram of a new type of power air intake mechanism;

[0028] Figure 6 It is a structural schematic diagram of the air inlet fan of the utility model.

[0029] In the figure: 1. generator frame; 2. partition; 3. connecting frame; 4. protective cover; 5. protective cover connection port; 6. inverter; 7. inverter connection port; 8. power air inlet mechanism; 801. cooling host; 802. power air inlet housing; 803. power air inlet; 804. air inlet fan; 805. power air outlet guide plate; 806. motor air outlet; 9. motor air inlet. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0031] See also Figure 1 - Figure 4A variable frequency generator air intake system includes a generator frame 1, which is made of high-strength steel. The high-strength steel has high yield strength and tensile strength, and can withstand the overall weight of the unit as well as vibration and load during operation, ensuring the stability and safety of the generator frame 1 under various working conditions. Selecting high-strength steel to make the generator frame 1 can achieve multiple benefits such as lightweight design, cost reduction, and extended service life while ensuring structural strength. Partitions 2 are installed on both sides of the generator frame 1. One end of the generator frame 1 is fixedly connected to two connecting frames 3 at the bottom position. A protective cover 4 is installed between the two connecting frames 3. The protective cover 4 adopts a semi-enclosed structure. The semi-enclosed structure can protect the internal components of the inverter 6 to a certain extent, and at the same time, an external heat sink or heat dissipation structure is used for heat dissipation, thereby improving the heat dissipation effect of the inverter 6, effectively reducing the operating temperature of the inverter 6, and improving In order to improve the overall reliability, two shield connection ports 5 and inverter connection ports 7 are respectively provided on one side of the connecting frame 3. The inverter 6 is installed inside the protective cover 4. Threaded holes corresponding to the inverter connection ports 7 are provided at the four corners of the inverter 6. The setting of the threaded holes can make it more convenient and quick for the installer to install the inverter 6. The inverter 6 can be simply fixed on the bracket through the threaded holes, which reduces the workload and time during the installation process and improves the installation efficiency. The outer wall of the inverter 6 fits the inner wall of the protective cover 4. The protective cover 4 can effectively isolate the internal and external environments of the inverter 6, prevent dust, moisture and other foreign substances from entering the inverter 6, protect the safe operation of the internal electronic components and circuit boards, and reduce the occurrence rate of failures. The close fit between the two can improve the heat dissipation effect of the inverter 6, make it easier for heat to be transferred to the surface of the protective cover 4, increase the heat dissipation area, improve the heat dissipation efficiency, effectively reduce the operating temperature of the inverter 6, and extend the life of the equipment.

[0032] like Figure 2 , Figure 5 and Figure 6As shown, a power air inlet mechanism 8 is arranged inside the generator frame 1 near the inverter 6. The power air inlet mechanism 8 includes a cooling main unit 801 installed inside the generator frame 1. The cooling main unit 801 is composed of an air inlet duct, a filtering device, and an air outlet device. The filtering device can prevent particles such as dust and impurities from entering the cooling main unit 801, protect the internal components from pollution and wear, and extend the service life of the equipment. Through the air outlet device, the cooling main unit 801 can discharge the filtered clean air to ensure the quality of the air outlet and avoid pollution to the surrounding environment. The front end of the cooling main unit 801 is fixedly connected to a power air inlet housing 802. The power air inlet housing 802 A power air inlet 803 is provided at the center of the front end, an inlet fan 804 is installed inside the cooling main unit 801 near the power air inlet 803, a power air outlet guide plate 805 is fixedly connected to one side of the cooling main unit 801 near the top, a motor air outlet 806 is installed on one side of the cooling main unit 801, and a motor air inlet 9 is provided on one side of the power air inlet mechanism 8. The heat generated by the inverter 6 will be absorbed by the inlet fan 804 and enter the cooling main unit 801 for subsequent cooling and purification, so as to prevent the heat generated by the inverter 6 from not being taken away in time, thereby affecting the operation of the inverter 6 and the entire diesel variable frequency generator set.

[0033] When the utility model is used, after installing and fixing the generator frame 1, the staff fixes the two connecting frames 3 to the specified positions of the generator frame 1 by screws, then installs the protective cover 4 between the two connecting frames 3, and then installs the inverter 6 on the inner wall of the protective cover 4 by multiple screws, so that the two fit tightly together, and then uses the fixing parts to fix the protective cover 4 and the inverter 6 tightly on the generator frame 1. After completing the installation of the inverter 6, the inlet fan 804 is installed in the specified position of the cooling host 801, and the power air inlet housing 802 covers the inlet fan 804. 04 and fixed on the cooling host 801 to form an integrated structure, and then the cooling host 801 is installed as a whole in the generator frame 1, and multiple fixings are used to fix it inside the generator frame 1 to ensure that it will not swing with the operation of the machine as a whole. After completing the entire installation work, connect each pipeline line to the designated position, through the new inverter 6 cooling structure design, use the power air intake mechanism 8 to take away the heat generated by the inverter 6, combined with the semi-enclosed protective cover 4 structure, the inverter 6 cooling effect is better, and its installation and maintenance are more convenient, which is very convenient.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An air intake system for a variable frequency generator set, comprising a generator set frame (1), characterized in that: Partitions (2) are installed on both sides of the generator set frame (1); one end of the generator set frame (1) is fixedly connected to two connecting frames (3) at the bottom; a protective cover (4) is installed between the two connecting frames (3); one side of the two connecting frames (3) is respectively provided with two protective cover connection ports (5) and an inverter connection port (7); an inverter (6) is installed inside the protective cover (4); A power air inlet mechanism (8) is provided inside the generator set frame (1) near the inverter (6), and a motor air inlet (9) is provided on one side of the power air inlet mechanism (8).

2. The air intake system of a variable frequency generator set according to claim 1, characterized in that: The generator set frame (1) is made of high-strength steel.

3. The air intake system of a variable frequency generator set according to claim 1, characterized in that: The protective cover (4) adopts a semi-enclosed structure.

4. The air intake system of a variable frequency generator set according to claim 1, characterized in that: Threaded holes corresponding to the inverter connection ports (7) are provided at the four corners of the inverter (6).

5. The air intake system of a variable frequency generator set according to claim 1, characterized in that: The outer wall of the inverter (6) is fitted onto the inner wall of the protective cover (4).

6. The air intake system of a variable frequency generator set according to claim 1, characterized in that: The power air inlet mechanism (8) comprises a cooling main unit (801) installed inside the generator set frame (1); the front end of the cooling main unit (801) is fixedly connected to a power air inlet housing (802); the front end of the power air inlet housing (802) is provided with a power air inlet port (803) at a center position; an inlet fan (804) is installed inside the cooling main unit (801) at a position close to the power air inlet port (803); one side of the cooling main unit (801) is fixedly connected to a power air outlet guide plate (805) at a top position; and one side of the cooling main unit (801) is provided with a motor air outlet port (806).

7. The air intake system of a variable frequency generator set according to claim 6, characterized in that: The cooling main unit (801) is composed of an air inlet duct, a filtering device, and an air outlet device.

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