CN205899943U - A fan icing simulation system - Google Patents

Abstract

The utility model provides a fan analog system that freezes, freeze room, fan, simulation water droplet system and hair -dryer including the system, fan, simulation water droplet system and hair -dryer are located the system and freeze the room, and the hair -dryer is towards the fan setting, simulation water droplet system include water pipe, trachea and water droplet generator, the water pipe bie is connected with the water inlet and the air inlet of water droplet generator with the tracheorrhaphy, be equipped with water flow regulator and water pressure regulator on the water pipe, be equipped with air mass flow regulator and air pressure regulator on the trachea, the water droplet generator of simulation water droplet system lies in between hair -dryer and the fan. The utility model discloses a fan analog system that freezes simple structure, the installation and maintenance is convenient, and small investment, and can simulate the frozen circumstances of fan under the multiple operating mode satisfies research wind field and attaches ice influence research to the fan surface.

Description

A fan icing simulation system

technical field

The utility model belongs to the technical field of wind power generation, in particular to a fan icing simulation system.

Background technique

Wind turbines are generally installed in damp and cold areas such as high mountains and frontiers with abundant wind resources, and blade icing has become one of the serious hidden dangers affecting their safe operation. When the wind turbine is in a climate with a low ambient temperature, the wind turbine will form icicles and gradually accumulate, which will eventually lead to icing on the blades and change the aerodynamic shape of the blades, thereby affecting the safety and reliability of the wind turbine. When a large number of blades are covered with ice, the efficiency of the wind turbine unit will decrease, and the output power of the unit will decrease, which may lead to unplanned shutdown of the wind turbine unit and affect the safe and stable operation of the power grid system. overcome technical difficulties. The existing deicing and antifreezing technology is still in the laboratory stage. It is difficult to directly apply this technology to field fans to obtain experimental data. Moreover, due to the change of seasons, most fans do not freeze for a certain period of time, which cannot meet the requirements. The deicing experimental conditions make it impossible to carry out relevant experimental research, so the establishment of a fan simulation icing system is an urgent problem to be solved.

The invention patent with the publication number CN104368471A discloses a spray water pressure control device and method in an ice wind tunnel or icing climate chamber. The water pressure cannot be adjusted, and the utility model does not fully mix the air and water before the water is sprayed out, and the sprayed water mist has a strong momentum, which makes it difficult to realize the formation of the water-air mixture, and cannot completely simulate various outdoor rainy and snowy weather. The invention patent with the publication number CN204620012U discloses a climate artificial simulation room with an ice wind tunnel, which uses an atomizing spray device, and uses a refrigeration device and a low-speed wind tunnel device to simulate rainy and snowy weather under low wind speed conditions. It is just a general-purpose climate artificial simulation room, and it is not suitable for simulating fan icing. This utility model also does not relate to the situation that blower fan freezes, and under routine condition, can't move the blower blower in the field into indoor and do test research.

Utility model content

In order to solve the above technical problems, the utility model provides a fan icing simulation system with a simple structure, which can simulate the icing of the fan in rainy and snowy weather at a lower cost.

The technical solution adopted by the utility model is: a fan icing simulation system, including a freezing room, a fan, a simulated water drop system and a blower, the fan, the simulated water drop system and the blower are located in the freezing room, and the blower is set towards the blower;

The simulated water drop system includes a water pipe, an air pipe and a water drop generator, and the water pipe and the air pipe are respectively connected to the water inlet and the air inlet of the water drop generator; the water pipe is provided with a water flow regulator and a water pressure regulator; the air pipe is provided with Air flow regulator and air pressure regulator; droplet generator simulating a droplet system is located between the blower and blower.

In the above fan icing simulation system, the water pipe is also provided with a water filter, and the air pipe is also provided with an air filter; the nozzle of the water droplet generator is provided with a mesh nut.

In the above fan icing simulation system, the fan includes a base, a brake belt, a fan main shaft and three blades; the fan main shaft is mounted on the base through rolling bearings; On the main shaft of the fan, its two ends are fixed on the ground; the cantilever end of the main shaft of the fan is provided with a hub, and three blades are installed on the hub.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model adopts the combined control of the freezing room, the fan, the simulated water drop system and the blower to simulate the freezing of the fan, and provides test specimens for the scientific experiment and teaching of the fan ice breaking and anti-icing in all weathers. Compared with the prior art, the utility model has the following beneficial effects:

1) The fan icing simulation system of the utility model has simple structure, convenient installation and maintenance, and low investment;

2) The fan icing simulation system of the utility model can simulate raindrops of different sizes, and realize multiple weathers of rime, rime, mixed rime and ice and snow;

3) The fan icing simulation system of the utility model uses a blower to supply air, which can simulate uniform, stable and consistent wind resistance, and meet the requirements of scientific research work on the wind field;

4) The fan blades of the fan icing simulation system of the utility model have variable pitch, which meets the scientific experiments of the fan under various pitch changing conditions;

5) The fan icing simulation system of the utility model can simulate the resistance of the fan to generate electricity in different wind fields by adjusting the friction torque between the brake belt and the fan shaft, and simulate the fan speed in this working condition;

6) The fan icing simulation system of the utility model can simulate the icing formed on the surface of the fan under different working conditions, satisfying the research on the influence of the wind field on the icing on the fan surface, and can provide scientific test pieces for effective deicing and anti-icing, It can also provide experimental conditions for teaching practice.

Description of drawings

Fig. 1 is a schematic layout diagram of the fan icing simulation system of the present invention.

Fig. 2 is a structural schematic diagram of a fan of the fan icing simulation system of the present invention.

Fig. 3 is an enlarged view of I in Fig. 2 .

In the figure: 1—freezing room, 2—fan, 3—simulated water drop system, 4—hair dryer, 5—water drop generator, 6—air pressure regulator, 7—air filter, 8—air flow regulator,

9—water pressure regulator, 10—water filter, 11—water flow regulator, 12—mesh nut, 201—base, 202—rolling bearing, 203—brake belt, 204—fan shaft, 205—blade , 206—bolt, 207—wheel hub.

detailed description

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

As shown in Figure 1, the fan icing simulation system of the present utility model includes a freezing room 1, a fan 2, a simulated water drop system 3 and a blower 4, and the fan 2, the simulated water drop system 3 and the blower 4 are located in the freezing room 1, and the blower 4 is set towards fan 2.

The simulated water droplet system 3 includes a water pipe, an air pipe and a water drop generator 5, and the water pipe and the air pipe are respectively connected with the water inlet and the air inlet of the water drop generator 5; the water pipe is provided with a water flow regulator 11, a water filter 10 and A water pressure regulator 9; an air flow regulator 8, an air filter 7 and an air pressure regulator 6 are arranged on the air pipe; A mesh nut 12 is installed at the nozzle of the droplet generator 5 .

As shown in FIG. 2 , the fan 2 includes a base 201 , a brake belt 203 , a fan main shaft 204 and three blades 205 ; the fan main shaft 204 is mounted on the base 201 through a rolling bearing 202 . The brake belt 203 is half-wrapped on the fan main shaft 204, and its two ends are fixed on the ground. The cantilever end of the fan main shaft 204 is provided with a hub 207 , and the three blades 205 are mounted on the hub 207 through bolts 206 .

The core of the utility model is to provide a fan icing simulation system, which can simulate various freezing weather by adjusting the size and density of the simulated raindrops, air volume and indoor temperature, and then compare and analyze the icing conditions of the fan under different working conditions , to provide experimental conditions for scientific research and teaching. In order to enable those skilled in the art to better understand the technical solution of the utility model, the fan icing simulation method of the utility model will be further described in detail below in conjunction with accompanying drawings 1 and 2. The fan icing simulation method of the utility model The method includes the following steps:

1) Install a suitable mesh nut 12 at the nozzle of the droplet generator 5 . The mesh nut 12 can allow the sprayed water-air mixture to form rain and fog, and the size and density of the holes on the mesh nut 12 determine the size and density of raindrops.

2) Adjust the air flow regulator 8 and the air pressure regulator 6, and the high-pressure gas passes through the air flow regulator 8 and the air pressure regulator 6 to form an airflow with a certain flow rate and a certain pressure to flow to the droplet generator 5.

3) Adjust the water flow regulator 11 and the water pressure regulator 9, and the high-pressure water flows through the flow regulator 11 and the water pressure regulator 9 to form a certain flow rate and a certain pressure water flow to the water droplet generator 5.

4) The air flow and water flow are fully mixed in the water droplet generator 5, and due to the effect of pressure, the water droplet generator 5 is sprayed out to form rain and fog weather.

5) Turn on the blower 4 to blow the water droplets that simulate rain and fog to the blower 2 to simulate a wind field mixed with rainfall. Adjusting the air volume of the blower 4 can simulate the air volume level of the wind field.

6) Adjust the tension between the brake belt 203 and the main shaft of the fan 204, and the resistance torque formed by the friction between them simulates the torque that the fan actually generates power, thereby simulating the actual blade speed under the condition of the fan generating power.

7) Adjust the temperature in the freezing room 1 to simulate freezing weather. Under the action of the simulated wind field and low temperature, the simulated water droplets condense into ice and adhere to the fan 2 to freeze into various ice types.

8) Adjust the assembly angle of the blade 205 and the hub 207 to obtain the freezing condition of the fan under different pitch conditions.

9) According to steps 1)-8), simulate the ice formation on the fan 2 under various working conditions (the temperature of the freezing room 1 under various working conditions, the air volume level, and the size and density of raindrops are different) , to compare the similarities and differences of ice formation under various working conditions, and provide experimental conditions for scientific research and teaching.

Claims (3)

1. A fan icing simulation system, comprising a freezing room (1), a fan (2), a simulated water drop system (3) and a blower (4), characterized in that: the fan (2), the simulated water drop system (3) and the blower (4) are located in the freezing room (1); the blower (4) is set towards the blower fan (2); Described simulated water drop system (3) comprises water pipe, air pipe and water drop generator (5), and water pipe and air pipe are respectively connected with the water inlet of water drop generator (5) and the air inlet; Water pipe is provided with water flow regulator ( 11) and a water pressure regulator (9); the air pipe is provided with an air flow regulator (8) and an air pressure regulator (6), and the droplet generator (5) of the simulated droplet system (3) is located at the blower (4) and between the fans (2). 2. The fan icing simulation system according to claim 1, characterized in that: the water pipe is also provided with a water filter (10), and the air pipe is also provided with an air filter (7); the water droplet generator ( 5) A mesh nut (12) is installed at the nozzle. 3. The fan icing simulation system according to claim 1, characterized in that: the fan (2) includes a base (201), a brake belt (203), a fan shaft (204) and three blades ( 205); the fan main shaft (204) is installed on the base (201) through a rolling bearing (202); the brake belt (203) is half-wrapped on the fan main shaft (204), and its two ends are fixed on On the ground; the cantilever end of the fan main shaft (204) is provided with a hub (207), and three blades (205) are installed on the hub (207).