A self-regulating device for reducing drag and regulating pressure in elevator shafts and its regulating method.

Abstract

The present invention relates to an elevator shaft drag reduction, pressure regulation and energy saving self-adjusting device and its adjustment method, comprising left / right drag reduction, pressure regulation and energy saving devices installed on both sides of the middle of the elevator shaft, the drag reduction, pressure regulation and energy saving device also comprising a displacement sensor, a controller, a speed monitoring device, a windshield, an adjustment plate and a power generation fan, the displacement sensor monitors the position of the car in real time and sends a displacement signal to the controller, the speed monitoring device monitors the wind speed in the shaft in real time and sends a wind speed signal to the controller, the controller sends a control signal to the left / right drag reduction, pressure regulation and energy saving device, and the left / right drag reduction, pressure regulation and energy saving device controls the inclination angle of the adjustment plate, the size of the ventilation area and the angle of the power generation fan. The elevator shaft drag reduction, pressure regulation and energy saving self-adjusting device and its adjustment method of the present invention can effectively reduce the aerodynamic resistance of the car, reduce the piston wind strength in the shaft, and increase the overall safety of the elevator.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an elevator shaft drag reduction, pressure regulation and energy saving self-regulating device and a regulating method thereof. Background Art

[0002] Elevators are one of the indispensable equipment in current high-rise buildings. Their main function is to transport passengers and goods in the vertical direction. With the continuous development of social economy, high-rise and super-high-rise buildings are gradually emerging. As the main vertical transportation tool today, elevators are also gradually developing in the direction of high-speed and super-high-speed.

[0003] When the elevator runs at high speed in a narrow shaft, there will be a high pressure gradient above and below the car, which will cause a large pressure difference between the upper and lower ends of the car, thereby generating a strong pressure difference resistance. The existence of pressure difference resistance aggravates the loss of elevator service life and energy waste; on the other hand, since the elevator shaft is closed, it is difficult for the air in the shaft to exchange with the outside world, and bacteria are easily bred in the air, producing odors, and the ventilation device of the car will send the air in the shaft into the car, which greatly endangers people's health; in addition, the violent piston wind caused by the operation of the car will rub against the rough shaft wall, thereby generating noise. The existence of piston wind is inevitable, but it needs to be weakened and reasonably utilized.

[0004] For example, the Chinese patent No. 201610777131.X, entitled “A deflector cover for a high-speed elevator”, discloses a deflector cover with multiple deflectors. Although it can effectively reduce the wind resistance during the operation of the elevator car, reduce noise, and protect the elevator car, it cannot replace the air in the shaft, nor can it weaken and utilize the piston wind strength in the shaft, and it cannot take effective measures against changes in the pressure in the shaft during the operation of the elevator, and the car may still vibrate.

[0005] Another example is the Chinese patent No. 201710290616.0, entitled "An elevator shaft ventilation and pressure regulating device", which discloses an elevator shaft pressure regulating and ventilation device with multiple ventilation and pressure regulating devices, which can effectively monitor and adjust the pressure in the shaft, reduce noise, and reduce car shaking. However, since it does not weaken the piston wind in the shaft and make reasonable use of it, and cannot automatically adjust the angle of the vent, it is impossible to effectively reduce the resistance of the car during elevator operation, and the pressure regulation is also relatively slow. Summary of the invention

[0006] In view of the above-mentioned existing problems, the purpose of the present invention is to provide an elevator shaft drag reduction, pressure regulation and energy saving self-adjusting device and its adjustment method, including a left drag reduction, pressure regulation and energy saving device, a right drag reduction, pressure regulation and energy saving device, a first displacement sensor, a second displacement sensor, a controller, a speed monitoring device and a generator fan. The controller sends a control signal through the car displacement data and the wind speed data in the shaft fed back in real time by the displacement sensor and the speed monitoring device. The left drag reduction, pressure regulation and energy saving device and the right drag reduction, pressure regulation and energy saving device control the angle of the adjustment plate, the size of the ventilation area and the blade angle of the generator fan according to the control signal to fully reduce the aerodynamic resistance of the car operation and keep the pressure in the shaft relatively constant, reduce noise and save energy.

[0007] In order to achieve the above object, one of the technical solutions adopted by the present invention is:

[0008] A self-regulating device for reducing drag, regulating pressure and saving energy in an elevator shaft comprises a left drag reducing, regulating pressure and saving energy device installed on the left side of the middle part of the elevator shaft and a right drag reducing, regulating pressure and saving energy device installed on the right side of the middle part of the elevator shaft, and also comprises a first displacement sensor, a second displacement sensor, a controller, a speed monitoring device, a wind shield, an adjusting plate and a power generation fan. The left drag reducing, regulating pressure and saving energy device and the right drag reducing, regulating pressure and saving energy device are both composed of at least one vent. The displacement sensor monitors the position of the car in real time and converts the displacement data into a displacement signal and sends it to the controller. The speed monitoring device monitors the wind speed in the shaft in real time and converts the wind speed data into a wind speed signal and sends it to the controller. The controller receives the displacement signal and the wind speed signal and sends a control signal to the left drag reducing, regulating pressure and saving energy device and the right drag reducing, regulating pressure and saving energy device. The left drag reducing, regulating pressure and saving energy device and the right drag reducing, regulating pressure and saving energy device control the inclination angle of the adjusting plate and the size of the ventilation area according to the control signal to reduce the aerodynamic resistance suffered by the elevator and maintain the relative constancy of the pressure in the elevator shaft.

[0009] Its further technical solution is that the left drag reduction, pressure regulation and energy saving device and / or the right drag reduction, pressure regulation and energy saving device are composed of a plurality of the vents, and the power generation fan is installed on each of the vents. The power generation fan generates electricity by means of piston wind caused by the operation of the car to supply lighting in the shaft.

[0010] The power generation fan can change the blade angle according to the control signal sent by the controller to adapt to different operating conditions of the elevator going up and down.

[0011] The cross-sectional areas of the multiple vents are different and they are arranged in the most compact manner. A movable plate is provided on the outer side of the vents to move in coordination with the multiple vents. The left drag reduction, pressure regulation and energy saving device and the right drag reduction, pressure regulation and energy saving device move the movable plate according to the control signal sent by the controller, and open the vents to reduce the aerodynamic resistance of the elevator and maintain the relative constancy of the pressure in the elevator shaft.

[0012] The left drag reduction, pressure regulation and energy saving device and the right drag reduction, pressure regulation and energy saving device both include two wind shields and two adjustment plates. The adjustment plates adjust the angles accordingly according to the control signals sent by the controller, and the wind shields move up and down according to the control signals sent by the controller.

[0013] Preferably, the two wind shields in the left drag reduction, pressure regulation and energy saving device or the right drag reduction, pressure regulation and energy saving device are axially symmetrically distributed.

[0014] More preferably, the movable plate is in a closed state in bad weather to prevent dust, debris, etc. from entering the shaft through the ventilation opening and causing harm to the elevator operation.

[0015] The first displacement sensors include two and are installed at the upper part of the ventilation opening in the shaft. The second displacement sensors also include two and are installed at the lower part of the ventilation opening in the shaft. The speed monitoring equipment is located at the upper part of the first displacement sensors.

[0016] The second technical solution of the present invention is to implement the self-adjusting method of the elevator shaft drag reduction, pressure regulation and energy saving self-adjusting device using the following steps:

[0017] 1) At the initial stage of the upward movement of the car, the adjustment plate and the wind shield are both connected at 90°; as the speed of the car increases, the speed monitoring device monitors the wind speed in the shaft in real time and converts the wind speed data into a wind speed signal and sends it to the controller, the controller controls the adjustment plate at the bottom of the left drag reduction, pressure regulation and energy-saving device to rotate clockwise and extend the short plate originally nested inside, the wind shield at the bottom of the left drag reduction, pressure regulation and energy-saving device is embedded in the groove, the adjustment plate at the bottom of the right drag reduction, pressure regulation and energy-saving device is rotated counterclockwise and extends the short plate originally nested inside, the wind shield at the bottom of the right drag reduction, pressure regulation and energy-saving device is embedded in the groove; the angle of the adjustment plate is adjusted accordingly with the wind speed in the shaft, but its maximum angle does not exceed 45°.

[0018] 2) When the car passes through the vent on its upward motion, the adjustment plate is at its maximum angle; after the bottom of the car passes through the second displacement sensor, the displacement sensor monitors the position of the car in real time and converts the displacement data into a displacement signal and sends it to the controller; the controller sends a control signal to the left drag reduction, pressure regulation and energy-saving device and the right drag reduction, pressure regulation and energy-saving device; the adjustment plate at the bottom of the left drag reduction, pressure regulation and energy-saving device rotates counterclockwise and retracts the short plate; the wind shield at the bottom of the left drag reduction, pressure regulation and energy-saving device extends from the slot; the adjustment plate at the bottom of the right drag reduction, pressure regulation and energy-saving device rotates clockwise and retracts the short plate; the wind shield at the bottom of the right drag reduction, pressure regulation and energy-saving device extends from the slot; after the bottom of the car passes through the first displacement sensor, the adjustment plate and the wind shield return to their original states.

[0019] 3) The same applies when the car is moving downward.

[0020] It can be further known from the above technical scheme that the elevator shaft drag reduction, pressure regulation and energy-saving self-adjusting device and its adjustment method of the present invention can automatically adjust the adjustment plate according to the displacement data of the car and the size of the wind speed in the shaft to adapt to each time period of the car operation, and at the same time control the ventilation area of ​​the vent and the fan blade angle of the generator fan according to the control signal to fully reduce the aerodynamic resistance encountered by the car during operation, maintain the relative constancy of the pressure in the elevator shaft, save energy, reduce car shaking, and increase the overall safety of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a front view of the hoistway when the car of the present invention is in the upward stage and does not pass through the ventilation port;

[0023] Figure 2 for Figure 1 A schematic diagram of the partial structure of the drag reduction and pressure regulation self-regulating device;

[0024] Figure 3 It is a main view of the hoistway when and after the car passes through the vent in the upward stage of the present invention;

[0025] Figure 4 It is the main view of the hoistway in three processes of the car descending stage of the present invention;

[0026] Figure 5 It is a front view of the vent of the present invention;

[0027] Figure 6 The front view of the power generation fan of the present invention

[0028] Among them: 1. Elevator shaft; 2. Car; 3. Left drag reduction and voltage regulation energy-saving device; 3-1. Adjustment plate I; 3-2 Adjustment plate II; 3-3 Wind shield I; 3-4 Wind shield II; 4. Right drag reduction and voltage regulation energy-saving device; 4-1. Adjustment plate III; 4-2 Adjustment plate IV; 4-3 Wind shield III; 4-4 Wind shield IV; 5. Second displacement sensor; 6. First displacement sensor; 7. Speed ​​monitoring device; 8. Moving plate; 9. Generator fan; 10. Ventilation port DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention are described below.

[0030] like Figure 1-6 As shown, an elevator shaft drag reduction, pressure regulation and energy-saving self-regulating device and its regulating method include a left drag reduction and pressure regulation device 3 installed on the left side of the middle of the elevator shaft 1, a right drag reduction and pressure regulation device 4 installed on the right side of the middle of the elevator shaft 1, a speed monitoring device 7, a displacement sensor and a controller (not shown). The left drag reduction and pressure regulation device 3 and the right drag reduction and pressure regulation device 4 are symmetrically distributed, and both can realize the functions of exhaust and air intake. The left drag reduction and pressure regulation device 3 includes an adjusting plate I3-2 and a wind shield I3-3 installed on the upper part of the vent 10, an adjusting plate II3-1 and a wind shield II3-4 installed on the lower part of the vent 10, and the right drag reduction and pressure regulation device 4 includes an adjusting plate III4-2 and a wind shield III4-3 installed on the upper part of the vent 10, and an adjusting plate IV4-1 and a wind shield IV4-4 installed on the lower part of the vent 10. The displacement sensor includes two first displacement sensors 6 installed on the upper part of the drag reduction and pressure regulation device in the elevator shaft 1 and two second displacement sensors 5 installed on the lower part of the drag reduction and pressure regulation device in the elevator shaft 1. The speed monitoring device 7 is installed on the upper part of the first displacement sensor 6. The displacement sensor and the speed monitoring device 7 are connected to the controller by wire or wireless means, and the left drag reduction and pressure regulating device 3 and the right drag reduction and pressure regulating device 4 are connected to the controller by wire or wireless means.

[0031] The first displacement sensor 6 and the second displacement sensor 5 monitor the displacement of the car in real time and convert the displacement data into a displacement signal and send it to the controller. The controller receives the displacement signal and sends a first control signal to the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4. The left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4 control the size of the ventilation area according to the first control signal to maintain the relative constant pressure in the elevator shaft. The speed monitoring device 7 monitors the wind speed of the piston wind in the shaft in real time and converts the wind speed data into a wind speed signal and sends it to the controller. The controller receives the wind speed signal and sends a second control signal to the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4. The left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4 control the angles of all adjustment plates and wind shields according to the second control signal to reduce the aerodynamic resistance suffered by the car during operation. The cross section of the vent 10 is circular, and a power generation fan 9 is installed on the vent 10. The power generation fan 9 can change the blade angle according to the first control signal to make full use of the shaft piston wind for power generation and lighting. The ventilation area is the sum of the areas of the multiple vents 10 that are opened.

[0032] The left drag reducing and pressure regulating device 3 and the right drag reducing and pressure regulating device 4 are both composed of a plurality of vents 10. The cross-sectional areas of the plurality of vents 10 of the left drag reducing and pressure regulating device 3 / the right drag reducing and pressure regulating device 4 are different and arranged in the most compact manner. A moving plate 8 is arranged outside the vents 10 to move in coordination with the plurality of vents 10. The left drag reducing and pressure regulating device 3 / the right drag reducing and pressure regulating device 4 moves the moving plate 8 according to the first control signal sent by the controller. The moving plate moves to open or close the vents 10 of the corresponding cross section to maintain the relative constant pressure inside the elevator shaft 1. The moving plate 8 is rectangular and moves in an up-and-down direction.

[0033] When the elevator car 2 goes up, two second displacement sensors 5 installed at the lower part of the drag reducing and pressure regulating device in the elevator shaft 1 monitor the displacement data of the car, and convert the displacement data into a displacement signal and send it to the controller. The controller receives the displacement signal and sends a first control signal to the left drag reducing and pressure regulating device 3 and the right drag reducing and pressure regulating device 4. The left drag reducing and pressure regulating device 3 and the right drag reducing and pressure regulating device 4 move the moving plate 8 to the top according to the first control signal, so that the piston wind in the elevator shaft 1 is quickly discharged. With the discharge of the piston wind, the air pressure inside the elevator shaft 1 begins to decrease to maintain the elevator shaft. 1, the pressure inside is constant, in addition, the power generation fan 9 starts to rotate clockwise to generate electricity for lighting; the speed monitoring device 7 installed on the upper part of the first displacement sensor 6 detects that the piston wind speed increases, and converts the actual average value of the wind speed into a wind speed signal and sends it to the controller, the controller receives the wind speed signal and sends a second control signal to the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4, the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4 adjust the adjustment plate and the wind shield plate according to the second control signal to increase their ventilation angle, so that the piston wind in the elevator shaft 1 is discharged to the maximum extent. When the elevator car 2 continues to go up and passes through the second displacement sensor 5, the second displacement sensor 5 sends a displacement signal to the controller, the controller sends a third control signal to the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4, the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4 reset the adjustment plate and the wind shield plate to return to the initial state according to the third control signal, and as the outside air enters, the power generation fan 9 changes the blade angle and rotates counterclockwise to maximize the use of the incoming air.

[0034] Similarly, when the elevator car 2 goes down, the two first displacement sensors 6 installed on the upper part of the drag reduction and pressure regulating device in the elevator shaft 1 monitor the displacement data of the car, and convert the displacement data into a displacement signal and send it to the controller. The controller receives the displacement signal and sends a first control signal to the left drag reduction and pressure regulating device 3 and the right drag reduction and pressure regulating device 4. The left drag reduction and pressure regulating device 3 and the right drag reduction and pressure regulating device 4 move the moving plate 8 to the top according to the first control signal, so that the piston wind in the elevator shaft 1 is quickly discharged. With the discharge of the piston wind, the air pressure inside the elevator shaft 1 begins to decrease to maintain the elevator shaft. The pressure inside the elevator shaft 1 is constant. In addition, the power generation fan 9 starts to rotate clockwise to generate electricity to supply lighting. The speed monitoring device 7 installed on the upper part of the first displacement sensor 6 detects that the piston wind speed increases, and converts the actual average value of the wind speed into a wind speed signal and sends it to the controller. The controller receives the wind speed signal and sends a second control signal to the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4. The left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4 adjust the adjustment plate and the wind shield plate according to the second control signal to increase their ventilation angle, so that the piston wind in the elevator shaft 1 is discharged to the maximum extent. When the elevator car 2 continues to go down and passes through the first displacement sensor 6, the first displacement sensor 6 sends a displacement signal to the controller, and the controller sends a third control signal to the left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4. The left drag reduction pressure regulating device 3 and the right drag reduction pressure regulating device 4 reset the adjustment plate and the wind shield plate to return to the initial state according to the third control signal. With the entry of external air, the power generation fan 9 changes the blade angle and rotates counterclockwise to maximize the use of the incoming air.

[0035] In a specific implementation application, the movable plate 8 is in a closed state in bad weather to prevent dust, debris, etc. from entering the shaft through the ventilation opening and causing harm to the elevator operation.

[0036] The above description is only for illustrating the technical concept and features of the present invention, and its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention will be covered within the protection scope of the present invention.

Claims

1. A method for adjusting an elevator shaft drag reduction, pressure regulation and energy saving self-adjusting device, characterized in that: The self-regulating device for reducing drag, regulating pressure and energy saving in an elevator shaft comprises a left drag reducing, regulating pressure and energy saving device installed on the left side of the middle part of the elevator shaft and a right drag reducing, regulating pressure and energy saving device installed on the right side of the middle part of the elevator shaft. The left drag reducing, regulating pressure and energy saving device and the right drag reducing, regulating pressure and energy saving device are both composed of at least one vent, and also include a first displacement sensor, a second displacement sensor, a controller, a speed monitoring device, a wind shield, an adjustment plate and a power generation fan; the adjustment method of the self-regulating device for reducing drag, regulating pressure and energy saving in an elevator shaft comprises the following specific steps: 1) In the initial stage of the upward movement of the car, the adjustment plate and the wind shield are both connected at 90 degrees. As the speed of the car increases, the speed monitoring device monitors the wind speed in the shaft in real time and converts the wind speed data into a wind speed signal and sends it to the controller. The controller controls the adjustment plate at the bottom of the left drag reducing, regulating pressure and energy saving device to rotate clockwise and extend the short plate originally nested inside. The wind shield at the bottom of the left drag reducing, regulating pressure and energy saving device is embedded in the groove, and the wind shield at the bottom of the right drag reducing, regulating pressure and energy saving device is embedded in the groove. 1) The adjusting plate at the bottom rotates counterclockwise and extends out of the short plate originally embedded inside, and the wind shield at the bottom of the right drag reducing, pressure regulating and energy-saving device is embedded in the groove; the angle of the adjusting plate is adjusted accordingly with the size of the wind speed in the shaft, but its maximum angle does not exceed 45°; 2) During the period when the car passes through the vent upward, the adjusting plate is at the maximum angle; after the bottom of the car passes through the second displacement sensor, the displacement sensor monitors the position of the car in real time and converts the displacement data into a displacement signal and sends it to the controller, and the controller sends a control signal to the left drag reducing, pressure regulating and energy-saving device and the right drag reducing, pressure regulating and energy-saving device, the adjusting plate at the bottom of the left drag reducing, pressure regulating and energy-saving device rotates counterclockwise and retracts the short plate, and the wind shield at the bottom of the left drag reducing, pressure regulating and energy-saving device extends out of the groove, the adjusting plate at the bottom of the right drag reducing, pressure regulating and energy-saving device rotates clockwise and retracts the short plate, and the wind shield at the bottom of the right drag reducing, pressure regulating and energy-saving device extends out of the groove; after the bottom of the car passes through the first displacement sensor, the adjusting plate and the wind shield return to their original state; 3) The same applies to the downward movement of the car.

2. The adjustment method of the elevator shaft drag reduction, voltage regulation and energy saving self-adjusting device according to claim 1 is characterized in that: The left drag reduction, pressure regulation and energy saving device and / or the right drag reduction, pressure regulation and energy saving device are composed of a plurality of the vents, and each of the vents is equipped with a power generation fan. The power generation fan generates electricity and stores energy by means of piston wind caused by the operation of the car to supply lighting in the shaft, etc., thereby realizing efficient use of energy.

3. The adjustment method of the elevator shaft drag reduction, voltage regulation and energy saving self-adjusting device according to claim 2 is characterized by: The power generation fan can change the blade angle according to the control signal sent by the controller to adapt to different operating conditions of the elevator going up and down.

4. The adjustment method of the elevator shaft drag reduction, voltage regulation and energy saving self-adjusting device according to claim 2 is characterized by: The cross-sectional areas of the plurality of vents are different and they are arranged in the most compact manner. A movable plate is provided on the outer side of the vents to move in coordination with the plurality of vents. The left drag reduction, pressure regulation and energy saving device and the right drag reduction, pressure regulation and energy saving device move the movable plate according to the control signal sent by the controller, and open the vents to reduce the aerodynamic resistance of the elevator and maintain the relative constancy of the pressure in the elevator shaft.

5. The adjustment method of the elevator shaft drag reduction, voltage regulation and energy saving self-adjusting device according to claim 1 is characterized in that: The left drag reduction, pressure regulation and energy saving device and the right drag reduction, pressure regulation and energy saving device both include two wind shields and two adjustment plates. The adjustment plates adjust the angles accordingly according to the control signals sent by the controller, and the wind shields move up and down according to the control signals sent by the controller.

6. The adjustment method of the elevator shaft drag reduction, voltage regulation and energy saving self-adjusting device according to claim 4 is characterized by: The two windshields in the left drag-reducing, pressure-regulating and energy-saving device or the right drag-reducing, pressure-regulating and energy-saving device are distributed in an axisymmetric manner.

7. The adjustment method of the elevator shaft drag reduction, voltage regulation and energy saving self-adjusting device according to claim 4 is characterized by: The movable plate is in a closed state in bad weather to prevent dust, debris and the like from entering the shaft through the ventilation opening and causing harm to the operation of the elevator.

8. The adjustment method of the elevator shaft drag reduction, voltage regulation and energy saving self-adjusting device according to claim 1 is characterized by: The first displacement sensors include two and are installed at the upper part of the ventilation opening in the shaft. The second displacement sensors also include two and are installed at the lower part of the ventilation opening in the shaft. The speed monitoring equipment is located at the upper part of the first displacement sensors.

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