Open-type salient pole phase modifier ventilation structure and control method thereof

Abstract

The invention discloses an open-type salient pole phase modifier ventilation structure and a control method thereof, and relates to the technical field of phase modifiers, in particular to an open-type salient pole phase modifier ventilation structure and a control method thereof.The open-type salient pole phase modifier ventilation structure is characterized in that an air inlet pipeline is arranged at a phase modifier stator air inlet, and a cooling fan device is arranged at a phase modifier stator air outlet; the air inlet pipeline, the rotor ventilation path, the stator ventilation path and the cooling fan device form a heat dissipation passage which is provided with ventilation flowing power by the cooling fan device; the heat dissipation channel further comprises an air outlet pipeline connected to the cooling fan device, and the air outlet pipeline is provided with a plurality of air outlets which comprise the air outlets formed in the workshop and the air outlets formed outside the workshop. The device has the advantages that waste heat generated by loss of the phase modifier can be utilized, the device is matched with a self-cleaning air supply device to achieve temperature control in a plant, and therefore the operation cost of an air conditioner installation scheme is reduced; the whole ventilation system is simple in structure, the comprehensive noise can be controlled to be about 80 decibels, and the obvious noise reduction and energy saving functions are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of phase condenser technology, and in particular to an open-type salient-pole phase condenser ventilation structure and a control method thereof. Background Art

[0002] In order to achieve the goals of carbon peak and carbon neutrality, a new power system with wind power, photovoltaic and other new energy as the main body is built. As a traditional reactive power compensation equipment, the phase regulator can provide reactive power compensation and short-circuit capacity for the new energy power grid, and play an important role in improving the stability of the power grid system. In recent years, the phase regulator has been widely used in new energy stations. As an important equipment in new energy stations, the operating noise and power consumption of the equipment have always been the focus of users.

[0003] The operating noise of the phase regulator comes partly from the ventilation noise, such as the noise of the external forced fan of the cooler and the ventilation noise of the fan on the rotor. The ventilation noise is often greater than 85 decibels. Aiming at the problem of ventilation noise, the present invention provides a ventilation structure that places the fan in the air duct, which almost completely isolates the noise of the fan inside the air duct and reduces the external noise.

[0004] For the closed air-water cooling and closed air-air cooling ventilation structures of traditional phase regulators, the heat generated by the loss of the phase regulator is transferred to the environment through the secondary medium. When the temperature of the phase regulator plant is low in winter, the temperature is increased by heating with air conditioning, and when the temperature is high in summer, the temperature is reduced by air conditioning. This will inevitably increase the power consumption of the air conditioner. The patent of this invention provides a ventilation structure that recycles the hot air of the phase regulator, which achieves the purpose of energy saving of the system.

[0005] In summary, the patent of the present invention provides an open ventilation system that can not only reduce ventilation noise but also utilize the waste heat of the phase regulator to achieve energy saving. Summary of the invention

[0006] The present invention aims to overcome the above-mentioned shortcomings of the prior art and provide an open-type salient pole phase regulator ventilation structure and a control method thereof.

[0007] The technical solution adopted by the present invention is as follows:

[0008] An open type salient pole phase shifter ventilation structure comprises an air inlet duct, a rotor ventilation path, a stator ventilation path, a cooling fan device, an air outlet duct, and a plant, wherein the air inlet duct is arranged at the air inlet of the phase shifter stator, the cooling fan device is arranged at the air outlet of the phase shifter stator, and the air inlet duct, the rotor ventilation path, the stator ventilation path and the cooling fan device form a heat dissipation path in which the cooling fan device provides ventilation flow power;

[0009] The heat dissipation passage also includes: an air outlet duct connected to the cooling fan device, and the air outlet duct is provided with a plurality of air outlets, including air outlets arranged inside and outside the factory building.

[0010] Furthermore, a plurality of air valves are arranged at positions corresponding to the air outlets of the air outlet duct.

[0011] Furthermore, an air inlet silencer is arranged inside the wall of the air inlet duct.

[0012] Furthermore, a fan soundproof cover is arranged on the outside of the cooling fan device.

[0013] Furthermore, the air outlet of the air outlet duct arranged in the factory is connected to a mixing box which can introduce air from outside the factory. A control valve is arranged in the mixing box, and its air outlet is arranged in the factory.

[0014] Furthermore, the air mixing box is connected to a self-cleaning air supply device for introducing air from outside the factory building.

[0015] Furthermore, the air inlet duct is provided with a protective net.

[0016] Furthermore, it includes a control system and a temperature sensor. There are multiple temperature sensors, which are respectively arranged inside and outside the factory building and inside the heat dissipation channel. The control system is electrically connected to the temperature sensor, the control valve and the air valve.

[0017] Furthermore, a control method for an open-type salient pole phase regulator ventilation structure comprises the following steps:

[0018] S1: Program the control system so that when the temperature of the plant is too high, the opening of the air valve of the air outlet connected to the outside of the plant is increased, and the opening of the air valve of the air outlet connected to the inside of the plant is reduced, so that part or all of the hot air is discharged from the plant;

[0019] S2: When the temperature of the factory building is low, reduce the opening of the air valve of the air outlet connecting the air outlet duct outside the factory building, and increase the opening of the air valve of the air outlet connecting the factory building, so as to discharge more hot air into the factory building and avoid the factory building temperature being too low;

[0020] S3: Through the real-time data of the temperature sensor, the opening of the air valve is adjusted repeatedly to control the factory temperature within the designed range.

[0021] Furthermore, in the above steps, the self-cleaning air supply device introduces air from outside the factory building by controlling the control valve in the air mixing box, and the air is mixed with the gas in the air outlet duct in the air mixing box and then discharged into the factory building to achieve the purpose of temperature control.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. The ventilated cooling fan is placed in a soundproof cover. Even if the fan noise is loud, the noise can be effectively isolated and reduced to below 70 decibels.

[0024] 2. The ventilation structure facilitates the design of a silencer at the air inlet, which can significantly reduce the ventilation noise emitted from the air inlet.

[0025] 3. It can realize the utilization of waste heat generated by the loss of phase-converter, and realize the temperature control in the factory with the self-cleaning air supply device, thereby reducing the operating cost of the air conditioning installation solution.

[0026] 4. The structure of the entire ventilation system is relatively simple, and the comprehensive noise of the entire system can be controlled at around 80 decibels, with obvious noise reduction and energy-saving functions.

[0027] 5. Good cooling effect, low operating temperature of the phase regulator. This structure has only one heat exchange process. Compared with air-to-air cooling and air-to-water cooling, it has a good cooling effect and no secondary heat exchange process, which makes the operating temperature of the phase regulator lower. Under the same operating capacity, the component temperature is about 15°C lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of side A of the present invention.

[0030] Markings in the figure:

[0031] 1-air inlet duct; 2-air inlet silencer; 3-rotor ventilation path; 4-stator ventilation path; 5-fan soundproof cover; 6-cooling fan device; 7-air outlet duct; 8-air valve; 9-air mixing box; 10-self-cleaning air supply device; 11-factory building.

[0032] Specific Examples

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Embodiment 1

[0036] In this embodiment, if Figure 1 , 2 As shown, an open-type salient pole phase shifter ventilation structure comprises an air inlet duct, a rotor ventilation path, a stator ventilation path, a cooling fan device, an air outlet duct, and a plant, wherein the air inlet duct is arranged at the air inlet of the phase shifter stator, the cooling fan device is arranged at the air outlet of the phase shifter stator, and the air inlet duct, the rotor ventilation path, the stator ventilation path and the cooling fan device form a heat dissipation path in which the cooling fan device provides ventilation flow power;

[0037] The heat dissipation passage also includes: an air outlet duct connected to the cooling fan device, and the air outlet duct is provided with a plurality of air outlets, including air outlets arranged inside and outside the factory building.

[0038] The power of ventilation flow mainly comes from the cooling fan device. Under the action of the cooling fan, the cold air in the environment enters the phase shifter air inlet duct, enters the phase shifter through the path with the silencer, cools the stator end of the phase shifter, enters the rotor ventilation path to cool the rotor, and then enters the stator ventilation path to cool the stator core and winding. After being heated, the cold air becomes hot air, which is collected at the air outlet on the back of the phase shifter stator, enters the cooling fan device inside the fan soundproof cover, and is discharged into the external air outlet duct by the cooling fan. The air outlet duct is equipped with an air valve, and the hot air can be exhausted in a variety of ways according to the opening state of the air valve.

[0039] System composition

[0040] Air inlet duct: installed at the air inlet of the phase regulator stator.

[0041] Rotor ventilation path: used to cool the rotor.

[0042] Stator ventilation path: used to cool the stator core and windings.

[0043] Cooling fan device: installed at the air outlet of the phase regulator stator to provide ventilation flow power.

[0044] Air outlet duct: connected to the cooling fan device, with multiple air outlets, which are set inside and outside the factory respectively.

[0045] Factory building: Contains phase regulator and related ventilation equipment.

[0046] The outlet duct is the flow path of hot air and is connected to the fan silencer. A silencer can be further installed inside the outlet duct according to the silencer situation. The outlet duct can be designed as a multi-way structure, one way leading to the outside of the factory and one way connected to the air mixing box. A damper can be installed on the outlet duct to adjust the flow direction and flow of hot air in the duct.

[0047] Ventilation process: cold air enters from the air inlet duct, passes through the silencer and enters the phase shifter. The cold air first cools the stator end, then enters the rotor ventilation path to cool the rotor. The cooled air then enters the stator ventilation path to cool the stator core and windings. The hot air gathers at the phase shifter stator outlet and enters the cooling fan device inside the fan soundproof cover.

[0048] The cooling fan discharges the hot air into the air outlet duct, and the flow direction and flow rate are adjusted by the air valve.

[0049] The air outlet duct is provided with an air valve, and the hot air can be exhausted in a variety of ways depending on the opening state of the air valve.

[0050] Furthermore, a plurality of air valves are arranged at positions corresponding to the air outlets of the air outlet duct.

[0051] Furthermore, an air inlet silencer is provided on the wall of the air inlet duct.

[0052] Furthermore, a fan soundproof cover is arranged on the outside of the cooling fan device.

[0053] Furthermore, the air outlet of the air outlet duct arranged in the factory is connected to a mixing box which can introduce air from outside the factory. A control valve is arranged in the mixing box, and its air outlet is arranged in the factory.

[0054] The box body with a cavity inside is connected to the air outlet duct on one side and the self-cleaning air supply device for discharging cold air into the factory. An air outlet is set on one side as the outlet for air to enter the factory. A control valve is set in the air mixing box to adjust the mixing ratio of cold air and hot air.

[0055] Furthermore, the air mixing box is connected to a self-cleaning air supply device for introducing air from outside the factory building.

[0056] It has the function of purifying the air, filtering the air outside the factory and discharging it into the factory, which plays a role in keeping the inside of the factory clean. The self-cleaning air supply device sends cold air into the air mixing box, and the cold air and hot air are mixed and discharged into the factory, which plays a role in regulating the temperature of the factory.

[0057] The self-cleaning air supply device and the cooling fan device can adopt frequency conversion control to automatically adjust the operating frequency of the air supply device and the cooling fan device according to the operating temperature of the phase regulator, thereby further reducing the operating power consumption and noise of the device.

[0058] Furthermore, the air inlet duct is provided with a protective net.

[0059] It is the channel for cold air to enter the phase regulator. Its shape can be square, round, etc. Its entrance is generally designed with shutters and protective nets to prevent small animals, debris and other large objects from being sucked in. A silencer can be installed inside it to silence the air intake.

[0060] Furthermore, it includes a control system and a temperature sensor. There are multiple temperature sensors, which are respectively arranged inside and outside the factory building and inside the heat dissipation channel. The control system is electrically connected to the temperature sensor, the control valve and the air valve.

[0061] Specifically, the PLC control device automatically adjusts the opening of the air valve according to the temperature sensor in the factory. The air valve can be defined as a return air valve and an outlet air valve according to the different installation positions. The return air valve can be used to adjust the hot air volume entering the air mixing box, and the outlet air valve can be used to adjust the hot air volume discharged outside the factory.

[0062] Embodiment 2

[0063] Based on the above-mentioned open-type salient pole phase condenser ventilation structure, a control method for the open-type salient pole phase condenser ventilation structure is provided, comprising the following steps:

[0064] S1: Program the control system so that when the temperature of the plant is too high, the opening of the air valve of the air outlet connected to the outside of the plant is increased, and the opening of the air valve of the air outlet connected to the inside of the plant is reduced, so that part or all of the hot air is discharged from the plant;

[0065] S2: When the temperature of the factory building is low, reduce the opening of the air valve of the air outlet connecting the air outlet duct outside the factory building, and increase the opening of the air valve of the air outlet connecting the factory building, so as to discharge more hot air into the factory building and avoid the factory building temperature being too low;

[0066] S3: Through the real-time data of the temperature sensor, the opening of the air valve is adjusted repeatedly to control the factory temperature within the designed range.

[0067] A program can be compiled to achieve the mixing amount of hot and cold air and the adjustment range of the factory temperature. When the factory temperature is higher than 30℃, the opening of the return air valve and the exhaust air valve is controlled to discharge part or all of the hot air out of the factory; when the factory temperature drops below 15℃, the opening of the return air valve and the exhaust air valve is controlled again to discharge more hot air into the mixing box to avoid the factory temperature being too low. The opening of the return air valve and the exhaust air valve is adjusted repeatedly to control the factory temperature in the range of 15℃ to 30℃.

[0068] Furthermore, in the above steps, the self-cleaning air supply device introduces the outside air of the factory by controlling the control valve in the air mixing box, and the air is mixed with the gas in the air outlet duct in the air mixing box and then discharged into the factory to achieve the purpose of temperature control. The program is compiled to achieve the mixing amount of cold and hot air and the adjustment range of the factory temperature.

[0069] The above description is only a preferred embodiment of the invention and is not intended to limit the invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention should be included in the protection scope of the invention.

Claims

1. An open-type salient pole phase condenser ventilation structure, comprising an air inlet duct (1), a rotor ventilation path (3), a stator ventilation path (4), a cooling fan device (6), an air outlet duct (7), and a factory building (11), characterized in that: The air inlet duct (1) is arranged at the air inlet of the phase regulator stator, and the cooling fan device (6) is arranged at the air outlet of the phase regulator stator. The air inlet duct (1), the rotor ventilation path (3), the stator ventilation path (4) and the cooling fan device (6) constitute a heat dissipation path in which the cooling fan device (6) provides ventilation flow power; the heat dissipation path also includes: an air outlet duct (7) connected to the cooling fan device (6), and the air outlet duct (7) is provided with a plurality of air outlets, including air outlets arranged inside and outside the factory building (11).

2. According to the open type salient pole phase regulator ventilation structure as described in claim 1, it is characterized by: A plurality of air valves (8) are arranged at positions corresponding to the air outlet of the air outlet duct (7).

3. According to the open type salient pole phase regulator ventilation structure as described in claim 1, it is characterized by: An air inlet silencer (2) is provided on the wall of the air inlet duct (1).

4. The ventilation structure of an open salient pole phase modulator according to claim 1, characterized in that: A fan soundproof cover (5) is arranged outside the cooling fan device (6).

5. The ventilation structure of an open type salient pole phase modulator according to claim 2, characterized in that: The air outlet of the air outlet duct (7) arranged in the factory building (11) is connected to an air mixing box (9) capable of introducing air outside the factory building (11); a control valve is arranged in the air mixing box (9), and its air outlet is arranged in the factory building.

6. The ventilation structure of an open type salient pole phase modulator according to claim 5, characterized in that: The air mixing box (9) is connected to a self-cleaning air supply device (10) for introducing external air from the factory building (11).

7. The ventilation structure of an open type salient pole phase modulator according to claim 6, characterized in that: The air inlet duct (1) is provided with a protective net.

8. The ventilation structure of an open type salient pole phase modulator according to claim 5, characterized in that: It comprises a control system and a temperature sensor. The temperature sensor comprises a plurality of sensors respectively arranged inside and outside the plant (11) and inside the heat dissipation passage. The control system is electrically connected to the temperature sensor, the control valve and the air valve (8).

9. A control method for an open type salient pole phase condenser ventilation structure, applied to an open type salient pole phase condenser ventilation structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: programming the control system so that when the temperature of the factory building (11) is too high, the opening of the air outlet valve (8) of the air outlet duct (7) connected to the outside of the factory building (11) is increased, and the opening of the air outlet valve (8) connected to the inside of the factory building (11) is decreased, so that part or all of the hot air is discharged from the factory building; S2: When the temperature of the factory building is low, the opening of the air outlet valve (8) of the air outlet duct (7) connected to the outside of the factory building (11) is reduced, and the opening of the air outlet valve (8) connected to the inside of the factory building (11) is increased, so that more hot air is discharged into the factory building (11) to avoid the factory building temperature being too low; S3: The opening of the air valve (8) is repeatedly adjusted based on the real-time data of the temperature sensor to control the plant temperature within the designed range.

10. The control method of the ventilation structure of an open salient pole phase modulator according to claim 9, characterized in that: In the above steps, the self-cleaning air supply device (10) introduces external air into the factory building (11) by controlling the control valve in the air mixing box (9), and the air is mixed with the gas in the air outlet duct (7) in the air mixing box (9) and then discharged into the factory building (11), thereby achieving the purpose of temperature control.

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