WO2023174358A1

WO2023174358A1 - Electric valve as well as driving motor and torque calibration device thereof

Info

Publication number: WO2023174358A1
Application number: PCT/CN2023/081802
Authority: WO
Inventors: 周文; 赵战国; 魏猛; 王宝; 付兴; 王泽平; 王晓江; 郝云轩; 戚文华; 杨汝贞; 方晓璐; 林鑫; 案峰; 汪路; 王晓轩; 顾秋斌
Original assignee: 北京雷蒙赛博核装备技术研究有限公司
Priority date: 2022-03-17
Filing date: 2023-03-16
Publication date: 2023-09-21
Also published as: CN217463388U

Abstract

An electric valve as well as a driving motor and a torque calibration device thereof. The electric valve comprises a valve (1), a driving motor (3), a transmission device (2) and a driver (4), the driving motor (3) being connected to the valve (1) by means of the transmission device (2), and the driver (4) being mounted on the driving motor (3) and controlling the opening and closing of the valve (1) by means of the driving motor (3). The driving motor (3) comprises a torque calibration device (5) detachably connected thereto. The torque calibration device comprises: a housing (51); an end cover (52), mounted at one end of the housing (51); a connection flange (53), mounted at the other end of the housing (51); a torque sensor (54), mounted in the housing (51); a connection adapter (55), mounted and supported on the connection flange (53), one end of the connection adapter (55) being connected to the torque sensor (54), and the other end of the connection adapter (55) being detachably connected to a tail end of a motor shaft (31) of the driving motor (3); and a signal box (56), mounted on the end cover (52) and connected to the torque sensor (54). The device may realize accurate control of valve closing torque.

Description

An electric valve, its driving motor and torque calibration device

Technical field

The utility model relates to an electric valve, in particular to an electric valve and a torque calibration device thereof.

Background technique

The existing valve electric device uses the power supply to directly start the AC asynchronous motor, and the motor drives the mechanical transmission mechanism to drive the valve to operate and realize valve opening/closing. AC asynchronous motors are widely used in electric devices due to their simple structure, reliable operation, light weight, cheap price and large starting torque. However, during use, it is impossible to control the force on the valve seat when the valve is closed in place. , the specific pressure required for sealing cannot be established, which may easily cause the valve to not close tightly, resulting in internal leakage of the valve. The torque control accuracy of the AC asynchronous motor for closing and opening the valve is low, coupled with the influence of factors such as medium temperature, foreign matter, rust, etc., resulting in opening The driving torque of the valve cannot overcome all the resistance torque, causing the valve to fail to open. And it is impossible to achieve networked centralized remote control with high reliability and strong anti-interference performance.

Therefore, this field urgently needs a torque calibration device that can be used for on-site torque calibration of electric valves of various specifications and has effective accuracy to reduce the impact of electrical parameter changes caused by wear, aging, and electrical parameter drift during initial use and long-term use on torque control. The influence of accuracy enables precise control of the valve closing torque of the electric valve to accurately control the sealing specific pressure of the valve sealing surface.

Utility model content

The technical problem to be solved by this utility model is to provide an electric valve and its torque calibration device in view of the above-mentioned defects of the prior art.

In order to achieve the above purpose, the utility model provides a torque calibration device, which includes:

case;

An end cover, installed at one end of the housing;

The connecting flange is installed on the other end of the housing;

a torque sensor installed in the housing;

A connection adapter is installed and supported on the connection flange, and one end of the connection adapter is connected to the Torque sensor connection, the other end of the connection adapter is detachably connected to the end of the motor shaft of the drive motor; and

A signal box is installed on the end cover and connected to the torque sensor. A communication module is provided in the signal box. The communication module transmits the real-time torque information of the drive motor detected by the torque sensor through Wired or wireless transmission to the drive.

In the above torque calibration device, the other end of the connection adapter is connected to the end of the motor shaft through an adapter sleeve.

In the above torque calibration device, a position sensor is installed in the rear end cover of the driving motor, and the other end of the connection adapter is connected to the end of the motor shaft through the position sensor.

The above torque calibration device, wherein the position sensor includes:

upper cover;

The lower cover snaps together with the upper cover to form a storage space;

Sensor, arranged in the accommodation space;

A sensor shaft, one end of which is connected to the sensor;

A driving shaft sleeve is located in the accommodation space and is mounted and supported on the upper cover and lower cover through bearings. One end of the driving shaft sleeve is connected to the end of the motor shaft, and the other end of the driving shaft sleeve is connected to the end of the motor shaft. The other end of the connection adapter is connected; and

A transmission wheel set is located in the accommodation space. The driving wheel of the transmission wheel set is connected to the drive shaft sleeve, and the driven wheel of the transmission wheel set is connected to the other end of the sensor shaft.

In the above torque calibration device, the connecting flange is connected to the rear end cover of the driving motor, and the connecting flange is provided with a connecting support portion for realizing reaction torque support.

The above torque calibration device, wherein the connection support part is a key connection, spline connection or pin connection structure provided on the connection flange, and the center line of the key connection, spline connection or pin connection structure and The center lines of the connection adapters are parallel.

In the above torque calibration device, the torque sensor is a static torque sensor or a dynamic torque sensor.

In the above-mentioned torque calibration device, the connecting flange is further provided with a quick-connect structure, and the quick-connect structure is quickly connected or disconnected from the rear end cover through the insertion and removal of fixed pins.

In order to better achieve the above object, the present invention also provides a drive motor, which includes the above-mentioned torque calibration device, and the torque calibration device is detachably connected to the drive motor.

In order to better achieve the above purpose, the utility model also provides an electric valve, including a valve, a driving motor, a transmission device and a driver. The driving motor is connected to the valve through the transmission device, and the driver is installed on The driving motor controls the opening and closing of the valve through the driving motor, wherein the driving motor is the above-mentioned driving motor.

The beneficial effects of this utility model are:

The torque calibration device of this utility model has a portable structure and can perform current-torque calibration on actuators of electric valves of various specifications to reduce the impact of electrical parameter changes on torque control caused by wear, aging, and electrical parameter drift during initial use and long-term use. The influence of accuracy enables precise control of the valve closing torque of the electric valve to accurately control the sealing specific pressure of the valve sealing surface. It solves the problems in the prior art that the torque control accuracy of electric valve actuators and valve electric devices is low and lacks on-site torque calibration devices. It is convenient, simple and fast to use.

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the utility model.

Description of the drawings

Figure 1 is a schematic structural diagram of an electric valve according to an embodiment of the present utility model;

Figure 2 is a schematic structural diagram of a torque calibration device according to an embodiment of the present invention;

Figure 3 is a schematic connection diagram of a torque calibration device according to an embodiment of the present invention;

Figure 4 is a schematic connection diagram of a torque calibration device according to another embodiment of the present invention;

Figure 5 is a schematic structural diagram of a position sensor according to an embodiment of the present invention;

Figure 6 is a schematic diagram of the connection between the torque calibration device and the drive motor according to one embodiment of the present invention;

Figures 7A-7C are respectively schematic structural diagrams of the connection support portion of the present utility model.

Among them, reference signs
1 valve
2 transmission device
3 drive motor
31 motor shaft
32 motor shell
33 rear end cover
4 drives
5Torque calibration device
51 shell
52 end cap
53 connecting flange
531 connection support part
532 quick connection structure
54 torque sensor
55 connection adapter
56 signal box
57 fixed pin
58 adapter sleeve
6 position sensors
61 upper cover
62 lower cover
63 sensors
64 sensor axis
65 transmission wheel set
66 drive bushing

Detailed ways

The structural principle and working principle of the present invention will be described in detail below in conjunction with the accompanying drawings:

Referring to Figure 1, Figure 1 is a schematic structural diagram of an electric valve according to an embodiment of the present invention. The electric valve of the utility model includes a valve 1, a driving motor 3, a transmission device 2 and a driver 4. The driving motor 3 is connected to the valve 1 through the transmission device 2, and the driver 4 is installed on the driving motor. 3, and controls the opening and closing of the valve 1 through the drive motor 3. The drive motor 3 also includes a torque calibration device 5 detachably connected thereto. The drive motor 3 may preferably be an AC asynchronous motor. The AC asynchronous motor can be fixed to the transmission flange of the transmission device 2 through the motor flange. The driver 4 can control the operation of the AC asynchronous motor and transmit the motor torque to the transmission device 2 through the motor shaft 31. After the transmission device 2 decelerates, it drives the valve 1 to open or close. Because the composition, structure, mutual positional relationship, connection relationship and working principle of other parts of the electric valve are relatively mature existing technologies, Therefore, no further details will be given here, and only the torque calibration device 5 of the present invention will be described in detail below.

Referring to Figure 2, Figure 2 is a schematic structural diagram of the torque calibration device 5 according to an embodiment of the present invention. The torque calibration device 5 of the present invention includes: a housing 51; an end cover 52, installed at one end of the housing 51; a connecting flange 53, installed at the other end of the housing 51; a torque sensor 54, installed In the housing 51; a connection adapter 55 is installed and supported on the connection flange 53, one end of the connection adapter 55 is connected to the torque sensor 54, specifically connected to the sensor shaft of the torque sensor 54, The other end of the connection adapter 55 is detachably connected to the end of the motor shaft 31 of the driving motor 3; and a signal box 56 is installed on the end cover 52 and connected to the torque sensor 54.

Wherein, the torque sensor 54 can be a static torque sensor 54 or a dynamic torque sensor 54. The shell of the dynamic torque sensor 54 can be fixed to the shell 51, and the end of the shaft of the torque sensor 54 is connected to the end cover 52; the shell of the static torque sensor 54 It can be fixed with the housing 51. The torque sensor 54 can be connected to a cable plug fixed on the end cover 52 through a cable. External power supply and communication are achieved through the cable plug. The signal box 56 is fixed on the end cover 52. The signal of the torque sensor 54 can be connected through the cable. The plug is passed to the signal box 56. A communication module is provided in the signal box 56, such as Bluetooth or Wi-Fi, which can wirelessly transmit the signal of the torque sensor 54 to the driver 4. The communication module in this embodiment transmits the signal of the torque sensor 54 to the driver 4 wirelessly. The detected real-time torque information of the drive motor 3 is transmitted to the driver 4 via wires or wirelessly to realize the signal output of the torque sensor 54 .

Referring to Figure 3, Figure 3 is a schematic connection diagram of the torque calibration device 5 according to an embodiment of the present invention. In this embodiment, the connection adapter 55 is directly connected to the motor shaft 31 , that is, the other end of the connection adapter 55 is connected to the end of the motor shaft 31 through an adapter sleeve 58 , specifically, the other end of the connection adapter 55 is connected to the adapter. One end of the sleeve 58 is connected, and the other end of the adapter sleeve 58 is connected with the end of the motor shaft 31 , thereby realizing the connection between the torque sensor 54 and the motor shaft 31 . This end of the connection adapter 55 can be a square shaft, a hexagonal shaft, a flat head shaft, a flat key shaft or a spline shaft interface structure.

Referring to Figure 4, Figure 4 is a schematic connection diagram of the torque calibration device 5 according to another embodiment of the present invention. In this embodiment, a position sensor 6 is installed in the rear end cover 33 of the driving motor 3, that is, the position sensor 6 is located in the space enclosed by the rear end cover 33 and the motor housing 32. The other part of the connection adapter 55 One end is connected to the end of the motor shaft 31 through the position sensor 6 .

Referring to Figure 5, Figure 5 is a schematic structural diagram of the position sensor 6 according to an embodiment of the present invention. The position sensor 6 in this embodiment includes: an upper cover 61; a lower cover 62, which snaps together with the upper cover 61 to form an accommodation space; a sensor 63, which is arranged in the accommodation space; a sensor shaft 64, One end and all The sensor 63 is connected; a driving sleeve 66 is located in the accommodation space and is mounted and supported on the upper cover 61 and the lower cover 62 through bearings. One end of the driving sleeve 66 is connected to the end of the motor shaft 31 , the other end of the drive sleeve 66 is connected to the other end of the connection adapter 55, thereby realizing the connection between the torque sensor 54 and the motor shaft 31; and the transmission wheel set 65 is located in the accommodation space, and the transmission wheel set 65 is located in the accommodation space. The driving wheel of the wheel set 65 is connected to the driving sleeve 66 , and the driven wheel of the transmission wheel set 65 is connected to the other end of the sensor shaft 64 . The transmission wheel set 65 may be, for example, a gear transmission pair, a synchronous pulley transmission pair or a magnetic transmission wheel set.

Referring to Figure 6, Figure 6 is a schematic diagram of the connection between the torque calibration device 5 and the drive motor 3 according to an embodiment of the present invention. In this embodiment, the torque calibration device 5 is connected to the rear end cover 33 of the drive motor 3 through a connecting flange 53 , and a connecting support portion 531 for realizing reaction torque support is provided on the connecting flange 53 .

Referring to Figures 7A-7C, Figures 7A-7C are schematic structural diagrams of the connection support portion 531 in different embodiments of the present invention. The connection support part 531 of the present invention can be a key connection (as shown in Figure 7A), a spline connection (as shown in Figure 7B) or a pin connection (as shown in Figure 7C) provided on the connection flange 53. (shown) structure, the center line of the key connection, spline connection or pin connection structure is parallel to the center line of the connection adapter 55 . The connecting flange 53 may also be provided with a quick-connect structure 532 , and the quick-connect structure 532 can be quickly connected or disconnected from the rear end cover 33 by inserting or removing the fixing pin 57 . The connecting flange 53 and the rear end cover 33 of the drive motor 3 realize radial positioning through the stop, realize the reaction torque support through the connecting support part 531 such as a key, spline or pin, and connect and fix the rear end cover 33 through the fixing pin 57 to prevent If it falls off, the fixing pin 57 has a quick plug-in structure and is used in conjunction with the quick connection structure 532 to connect or disconnect the torque calibration device 5 conveniently and quickly.

The torque calibration device 5 can meet the torque calibration of electric valves of various specifications, and its torque calibration range can cover the maximum output torque of the motors supporting the electric valve actuators of multiple specifications; the torque calibration device 5 can be used with electric valve actuators of various specifications Use the same connection interface.

During operation, the torque calibration device 5 can be used to detect the torque within the motor output torque range in real time on site. First, the torque calibration device 5 is installed on the rear end cover 33 of the drive motor 3. The connection adapter 55 is connected to the drive sleeve 66 of the position sensor 6. The drive sleeve 66 is connected to the end of the motor shaft 31, thereby realizing the torque relationship between the motor shaft 31 and the motor shaft 31. The connection of the sensor 54; or, if there is no position sensor 6 in the drive motor 3, the connection adapter 55 can be directly connected to the end of the motor shaft 31 through the adapter sleeve 58 to realize the connection between the motor shaft 31 and the torque sensor 54. The torque calibration device 5 and the driver 4 can communicate via No. cable or wireless module to achieve communication connection; the driver 4 starts the torque calibration program, the driver 4 gradually loads the drive motor 3, and the torque sensor 54 detects the real-time torque data output by the controlled drive motor 3 through the communication module in the signal box 56 Transmitted to the driver 4, the driver 4 obtains the real-time current and torque data of the controlled drive motor 3. The above data can be transmitted wirelessly through wired or Bluetooth. The driver 4 corrects the current-torque function of the driver 4 through the built-in calibration algorithm. , and save the corrected current-torque function into the memory of driver 4. Finally, the set current-torque of driver 4 is corrected through the calibration program to complete the current-torque calibration function and realize the accurate output torque of the motor from driver 4. control.

This utility model can perform on-site current-torque calibration on electric valve actuators of various specifications to reduce the impact of electrical parameter changes caused by wear, aging, and electrical parameter drift during initial use and long-term use on torque control accuracy, and realize electric valve closing. Precise control of valve torque to accurately control the sealing specific pressure of the valve sealing surface.

Of course, the present utility model can also have various other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. However, These corresponding changes and deformations should all fall within the protection scope of the appended claims of this utility model.

Claims

A torque calibration device, characterized by including:

case;

An end cover, installed at one end of the housing;

The connecting flange is installed on the other end of the housing;

a torque sensor installed in the housing;

A connection adapter, installed and supported on the connection flange, one end of the connection adapter is connected to the torque sensor, and the other end of the connection adapter is detachably connected to the end of the motor shaft of the driving motor; and

A signal box is installed on the end cover and connected to the torque sensor. A communication module is provided in the signal box. The communication module transmits the real-time torque information of the drive motor detected by the torque sensor through Wired or wireless transmission to the drive.
The torque calibration device according to claim 1, wherein the other end of the connection adapter is connected to the end of the motor shaft through an adapter sleeve.
The torque calibration device according to claim 1, wherein a position sensor is installed in the rear end cover of the driving motor, and the other end of the connection adapter is connected to the end of the motor shaft through the position sensor.
The torque calibration device according to claim 3, wherein the position sensor includes:

upper cover;

The lower cover snaps together with the upper cover to form a storage space;

Sensor, arranged in the accommodation space;

A sensor shaft, one end of which is connected to the sensor;

A driving shaft sleeve is located in the accommodation space and is mounted and supported on the upper cover and lower cover through bearings. One end of the driving shaft sleeve is connected to the end of the motor shaft, and the other end of the driving shaft sleeve is connected to the end of the motor shaft. The other end of the connection adapter is connected; and

A transmission wheel set is located in the accommodation space. The driving wheel of the transmission wheel set is connected to the drive shaft sleeve, and the driven wheel of the transmission wheel set is connected to the other end of the sensor shaft.
The torque calibration device according to claim 1, 2, 3 or 4, characterized in that the connecting The connecting flange is connected to the rear end cover of the drive motor, and the connecting flange is provided with a connecting support portion for realizing reaction torque support.
The torque calibration device according to claim 5, characterized in that the connection support part is a key connection, spline connection or pin connection structure provided on the connection flange, and the key connection, spline connection or The center line of the pin connection structure and the center line of the connection adapter are located on the same straight line.
The torque calibration device according to claim 5, wherein the torque sensor is a static torque sensor or a dynamic torque sensor.
The torque calibration device according to claim 5, characterized in that the connecting flange is further provided with a quick-connect structure, and the quick-connect structure is quickly connected or disconnected from the rear end cover through the insertion and removal of fixed pins. .
A drive motor, characterized in that it includes the torque calibration device according to any one of the above claims 1-8, and the torque calibration device is detachably connected to the drive motor.
An electric valve, including a valve, a driving motor, a transmission device and a driver. The driving motor is connected to the valve through the transmission device. The driver is installed on the driving motor and controls the valve through the driving motor. The switch is characterized in that the driving motor is the driving motor according to claim 9.