A kind of device for testing the torque of totally enclosed electric gate valve
By combining a static torque sensor with a torque transmission mechanism, the accuracy and automation issues of torque testing for fully enclosed electric gate valves are solved, achieving efficient and accurate torque measurement, which is suitable for fully enclosed electric gate valves with non-standard structures.
Patent Information
- Application Number
- CN202521977399.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2035-09-15
AI Technical Summary
Existing technologies for torque testing of fully enclosed electric gate valves suffer from inaccurate loading methods, difficulty in simulating actual working conditions, large measurement errors, low automation, reliance on manual labor in the testing process, and a lack of testing devices suitable for non-standard structures, resulting in poor versatility.
A static torque sensor is combined with a torque transmission mechanism. An electric device drives the transmission dummy shaft to move the lead screw nut and the transmission lead screw. Combined with a position indicator, automated control is achieved, and torque data is monitored in real time and the torque-time curve is recorded.
It achieves high-precision, automated torque testing, is suitable for non-standard structures, improves testing efficiency and accuracy, and is applicable to the manufacturing and testing of fully enclosed electric gate valves.
Smart Images
Figure CN224594185U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of valve testing devices, specifically relating to a torque testing device for a fully enclosed electric gate valve. Background Technology
[0002] Fully enclosed electric gate valves, due to their high protection level, are suitable for harsh environments and are widely used in industries such as petroleum, chemical, and power. One of their key performance indicators is the opening and closing torque of the gate valve, which directly affects the selection and matching of the drive electric actuator, the valve's sealing performance, and the overall operational reliability. Excessive torque may cause the gate to jam and the motor to burn out; insufficient torque may result in a poor seal.
[0003] Currently, the torque testing methods for fully enclosed electric gate valves are not yet mature, and the following problems urgently need to be solved: the loading method is inaccurate, making it difficult to simulate actual working conditions and resulting in large measurement errors; the degree of automation is low, the testing process relies on manual labor, and the efficiency is low; there is a lack of testing devices suitable for non-standard structures, resulting in poor versatility. Utility Model Content
[0004] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a torque testing device for fully enclosed electric gate valves. This invention enables accurate, automatic, and efficient testing of the torque of fully enclosed electric gate valves.
[0005] To achieve the above objectives, the present invention adopts the following technical solution.
[0006] This utility model provides a torque testing device for a fully enclosed electric gate valve, comprising an electric actuator, a valve body, and a valve cover. The valve body and valve cover are fixed by double-ended studs. The device is characterized in that a static torque sensor is coaxially connected between the electric actuator and the valve cover. A torque transmission mechanism is disposed within the valve cover and the static torque sensor. The initial transmission end of the torque transmission mechanism is connected to the output shaft of the electric actuator, and the final transmission end of the torque transmission mechanism corresponds to the opening / closing port of the valve body. The opening and closing of the valve body is achieved through the torque transmission mechanism. Position indicators corresponding to the torque transmission mechanism are disposed on both sides of the valve cover. The position indicators are electrically connected to the electric actuator. The static torque sensor is connected to a testing instrument via a signal line for real-time torque data acquisition.
[0007] Furthermore, the torque transmission mechanism includes a transmission dummy shaft, a lead screw nut, a transmission lead screw, and a gate. The transmission dummy shaft passes through the static torque sensor. One end of the transmission dummy shaft is connected to the output shaft of the electric device, and the other end of the transmission dummy shaft is connected to the lead screw nut. The lead screw nut is fitted over the transmission lead screw and threadedly engages with it. The bottom end of the transmission lead screw is connected to the gate. The gate corresponds to the opening and closing port of the valve body, and the valve body is opened and closed by the position of the gate.
[0008] Furthermore, the bottom end of the transmission screw is connected to the gate plate through a T-shaped slot structure.
[0009] Furthermore, the transmission dummy shaft is connected to the output shaft of the electric device and the lead screw nut via a claw-type structure.
[0010] The beneficial effects of this utility model.
[0011] This invention monitors torque in real time using a static torque sensor, ensuring high measurement accuracy and reliable data. It boasts a high degree of automation, enabling the acquisition of torque curves throughout the entire process from fully open to fully closed. Its compact structure and strong adaptability make it particularly suitable for non-standard structures of fully enclosed electric gate valves. Furthermore, its simple operation and high testing efficiency make it widely applicable in valve manufacturing and testing. Attached Figure Description
[0012] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0013] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model.
[0014] The markings in the diagram are as follows: 1 is the electric actuator, 2 is the transmission dummy shaft, 3 is the static torque sensor, 4 is the lead screw nut, 5 is the transmission lead screw, 6 is the position indicator, 7 is the valve cover, 8 is the valve body, 9 is the gate, and 10 is the testing instrument. Detailed Implementation
[0015] As shown in the accompanying drawings, this embodiment provides a torque testing device for a fully enclosed electric gate valve, including an electric actuator 1, a valve body 8, and a valve cover 7, wherein the valve body 8 and the valve cover 7 are fixed by double-ended studs.
[0016] A static torque sensor 3 is coaxially connected between the electric actuator 1 and the valve cover 7. A torque transmission mechanism is installed inside the static torque sensor 3 and the valve cover 7. The torque transmission mechanism includes a transmission dummy shaft 2, a lead screw nut 4, a transmission lead screw 5, and a gate 9. The transmission dummy shaft 2 passes through the static torque sensor 3. One end of the transmission dummy shaft 2 serves as the initial transmission end of the torque transmission mechanism and is connected to the output shaft of the electric actuator 1 through a claw-type structure. The other end of the transmission dummy shaft 2 is connected to the lead screw nut 4 through a claw-type structure. The lead screw nut 4 is fitted over the transmission lead screw 5 and is threadedly engaged with the transmission lead screw 5. The bottom end of the transmission lead screw 5 is connected to the gate 9 through a T-shaped slot structure. The gate 9 serves as the transmission end of the torque transmission mechanism and corresponds to the opening and closing port of the valve body 8. The electric actuator 1 controls the torque transmission mechanism, and the valve body 8 is opened and closed by the movement of the gate 9.
[0017] The valve cover 7 is provided with position indicators 6 on both sides corresponding to the torque transmission mechanism. The position indicators 6 are electrically connected to the electric device 1. The position indicators 6 are used to detect the extreme position (fully open or fully closed) of the gate 9 and send a signal to stop the electric device 1.
[0018] The static torque sensor 3 is connected to the tester 10 via a signal line for real-time torque data acquisition.
[0019] During assembly, the valve body 8 and valve cover 7 are first fixed with double-ended studs, the transmission screw 5 and gate 9 are connected with T-shaped slots, the two ends of the static torque sensor 3 are fixed to the valve cover 7 and the electric device 1 respectively with double-ended studs, the screw nut 4 and the transmission dummy shaft 2 are connected with the claw structure, the other end of the transmission dummy shaft 2 is connected to the output shaft of the electric device 1, and the static torque sensor 3 passes through the middle to ensure that the three are coaxial.
[0020] The static torque sensor 3 is connected to the tester 10 via a signal line, and the position indicator 6 is installed on both sides of the valve cover 7 and electrically connected to the electric actuator 1.
[0021] During testing, the electric device 1 is activated, driving the transmission dummy shaft 2 to rotate, which in turn rotates the lead screw nut 4, thereby pushing the transmission lead screw 5 to move up and down, realizing the opening and closing of the gate 9. Throughout this process, the static torque sensor 3 monitors torque changes in real time, and the data is recorded and displayed as a torque-time curve by the testing instrument 10, thus completing the entire torque test.
[0022] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.
Claims
1. A torque testing device for a fully enclosed electric gate valve, comprising an electric actuator (1), a valve body (8), and a valve cover (7), wherein the valve body (8) and the valve cover (7) are fixed by double-ended studs, characterized in that, A static torque sensor (3) is coaxially connected between the electric device (1) and the valve cover (7). A torque transmission mechanism is provided inside the static torque sensor (3) and the valve cover (7). The initial transmission end of the torque transmission mechanism is connected to the output shaft of the electric device (1), and the transmission end of the torque transmission mechanism corresponds to the opening and closing port of the valve body (8). The valve body (8) is opened and closed through the torque transmission mechanism. Position indicators (6) corresponding to the torque transmission mechanism are provided on both sides of the valve cover (7). The position indicators (6) are electrically connected to the electric device (1). The static torque sensor (3) is connected to the tester (10) through a signal line for real-time acquisition of torque data.
2. The torque testing device for a fully enclosed electric gate valve according to claim 1, characterized in that, The torque transmission mechanism includes a transmission dummy shaft (2), a lead screw nut (4), a transmission lead screw (5), and a gate (9). The transmission dummy shaft (2) passes through the static torque sensor (3). One end of the transmission dummy shaft (2) is connected to the output shaft of the electric device (1), and the other end of the transmission dummy shaft (2) is connected to the lead screw nut (4). The lead screw nut (4) is sleeved on the outside of the transmission lead screw (5) and threadedly engaged with the transmission lead screw (5). The bottom end of the transmission lead screw (5) is connected to the gate (9). The gate (9) corresponds to the opening and closing port of the valve body (8). The valve body (8) is opened and closed by the position of the gate (9).
3. The torque testing device for a fully enclosed electric gate valve according to claim 2, characterized in that, The bottom end of the transmission screw (5) is connected to the gate (9) through a T-shaped slot structure.
4. The torque testing device for a fully enclosed electric gate valve according to claim 2, characterized in that, The transmission dummy shaft (2) is connected to the output shaft of the electric device (1) and the lead screw nut (4) through a claw-shaped structure.