CN217738513U - Torque repeated deviation testing device for valve electric device - Google Patents
Torque repeated deviation testing device for valve electric device Download PDFInfo
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- CN217738513U CN217738513U CN202221354121.2U CN202221354121U CN217738513U CN 217738513 U CN217738513 U CN 217738513U CN 202221354121 U CN202221354121 U CN 202221354121U CN 217738513 U CN217738513 U CN 217738513U
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Abstract
The utility model discloses a valve electric actuator torque repetition deviation test device, including experimental bent plate, test bench, moment arm, pressure sensor, adjusting block and output portion cover, the output portion cover includes output shaft an, goes up case lid, planetary gear, spacer sleeve, planet axle, sun gear, output disc, bearing an and base. The advantages are as follows: the planetary speed reducing structure of the technical scheme can convert the impact load of the moment arm output by the valve electric device, which acts on the pressure sensor and rotates rapidly, into the uniform speed load which acts slowly, and the load can be approximately regarded as a static load within a certain time range, so that the accuracy of the pressure value is improved, the output pressure value is increased through the planetary speed reducing structure, and the precision of torque repeated deviation is improved.
Description
Technical Field
The utility model relates to a valve electric actuator technical field, especially a valve electric actuator torque repeat deviation test device.
Background
The valve electric device is an electromechanical integrated device for controlling the opening and closing of the valve. According to what is specified in the standard GB/T24923-2010 "technical conditions for generic valve actuators": the electric device of the valve is respectively adjusted to a certain value in a nominal torque range in the opening and closing directions, and respectively started in the no-load direction and the closing direction, and gradually loaded to the torque control mechanism to act, and the torque value is measured for three times. The torque value in the opening and closing direction of the motor should meet the torque repetition deviation less than or equal to 10 percent.
Referring to fig. 1 and 2, a test bending plate 1 is fixed on a test bed 2 through a screw b 24, a valve electric actuator 3 is fixed on the test bending plate 1 through a screw a 23, and a torque shaft 4 is connected with the valve electric actuator 3 through a spline and penetrates through the test bending plate 1. The moment arm 5 is connected with the moment shaft 4 through a spline, the pressure sensor 6 is placed at a designated position of the test bed 2, and a contact of the pressure sensor is horizontally aligned with a corresponding contact surface of the moment arm 5 through the adjusting block 7. After the valve electric device 3 operates, the torque output by the torque shaft 4 and the torque arm 5 is converted into pressure on the pressure sensor 6, and the value of the pressure and the length of the known torque arm 5 are obtained through calculation to obtain the magnitude of the torque output by the valve electric device 3 when the torque control mechanism acts. The adjusting blocks 7 and the pressure sensors 6 arranged on the two sides can meet the requirement of the valve electric device 3 for measuring the torque value in positive and negative rotation.
The torque repetition deviation testing device in the prior art has the following defects:
1. the testing mechanism is simple in load, and the moment arm can act on the pressure sensor with impact load of a faster rotating speed, so that pressure readings of the pressure sensor are inaccurate and unstable.
2. For a product with smaller nominal torque, the readings of the pressure sensors in the two directions of the switch are smaller, and the obtained torque repeated deviation precision is lower.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a valve electric actuator torque repetition deviation test device, it has solved among the known art test mechanism and has reachd the unstable not accurate problem of torque value.
The technical scheme of the utility model: the utility model provides a valve electric actuator torque repetition deviation test device, includes experimental bent plate, test bench, moment arm, pressure sensor and adjusting block, the experimental bent plate of test bench fixed connection, experimental bent plate fixed connection valve electric actuator, pressure sensor places on the adjusting block of experimental bent plate both sides, and its characterized in that still includes the output portion cover, the output portion cover is through flat key connection valve electric actuator, the one end of moment arm is passed through the splined connection output portion cover, the contact surface of the other end of moment arm aligns with pressure sensor's contact level.
The test bed is fixedly connected with the test bent plate through a screw b.
The test bent plate is fixedly connected with the valve electric device through a screw a.
The output part sleeve comprises an output shaft a, an upper box cover, a planetary gear, a spacer bush, a planetary shaft, a central gear, an output disc, a bearing a and a base; the base is fixedly connected with the test bent plate, and the upper box cover is fixedly connected with the base; the bearing a is matched with a shaft hole of the base, the output shaft a is matched with the shaft hole of the bearing a, and the central gear is fixedly connected with the output shaft a; the central gear is meshed with the planetary gear, and the planetary gear is meshed with an internal gear of the base; the planet shaft is in interference fit with the shaft hole of the output disc, the spacer bush is in clearance fit with the planet shaft, and the planet gear is in interference fit with the spacer bush; the output end of the output disc is connected with the moment arm through a spline, and the root of the spline of the output end of the output disc is in clearance fit with the upper box cover.
The base is fixedly connected with the test bent plate through a screw a.
The upper box cover is fixedly connected with the base through a screw a.
The central gear is fixedly connected with the output shaft a through a flat key.
The output portion sleeve further comprises a bearing b and a pressing ring, an upper box cover spigot is arranged on the upper box cover, the bearing b is in clearance fit with the upper box cover spigot in the radial direction, the bearing b is fixedly connected with the upper box cover spigot in the axial direction through the pressing ring, and the pressing ring is fixedly connected with the upper box cover through a screw c.
The output portion cover still includes adjusting ring, shrouding and lock mother, there is output dish tang the spline root of output dish, there is output dish external screw thread at the spline top of output dish, adjusting ring and output dish tang clearance fit, shrouding and output dish clearance fit, lock mother and output dish external screw thread threaded connection, the moment arm passes through shrouding and output dish axial fixity and is connected.
The utility model discloses a theory of operation:
(1) After the valve electric actuator operates, the output shaft a can be driven to rotate so as to drive the central gear to rotate, and the planetary gear performs revolution motion between the internal gear and the central gear of the base and performs rotation motion by taking the spacer bush as the center. The revolution motion of the planetary gear drives the planetary shaft to do revolution motion, thereby driving the output disc to do rotation motion. The moment arm is connected with the output disc through a spline, and the moment arm is driven to act on the pressure sensor under the rotation of the output disc. The output torque of the valve electric device is the product of the reading of the pressure sensor and the length of the moment arm.
(2) Through the bearing b arranged on the upper box cover and the corresponding pressure ring, the radial concentricity of the output disc and the moment arm is ensured, so that the meshing transmission stability of related gears is ensured, and the stability and the uniform speed of the moment arm acting pressure sensor are indirectly ensured.
(3) By installing the adjusting ring and the locking nut, the axial positioning of the moment arm on the output disc is ensured, and the stability of the position of the moment arm acting on the pressure sensor in two directions of opening and closing of the valve electric device is indirectly ensured.
The utility model discloses an advantage and positive effect: the planetary speed reducing structure of the technical scheme can convert the impact load of the moment arm output by the valve electric device, which acts on the pressure sensor and rotates rapidly, into the uniform speed load which acts slowly, and the load can be approximately regarded as a static load within a certain time range, so that the accuracy of the pressure value is improved, the output pressure value is increased through the planetary speed reducing structure, and the precision of torque repeated deviation is improved.
Drawings
Fig. 1 is a schematic top view of a torque repeat deviation testing apparatus for a valve electric actuator according to the prior art.
Fig. 2 is a schematic front view of a torque repeat deviation testing device of a valve electric actuator in the prior art.
Fig. 3 is a schematic top view of embodiment 1 of the device for testing torque repeat deviation of a valve electric actuator according to the present invention.
Fig. 4 is a schematic view of the structure of embodiment 1 of the torque repeat deviation testing apparatus for valve electric actuator according to the present invention.
Fig. 5 is a schematic top view of embodiment 2 of the device for testing torque repeat deviation of a valve electric actuator according to the present invention.
Fig. 6 is a schematic view of the structure of embodiment 2 of the torque repeat deviation testing device for a valve electric actuator according to the present invention.
Fig. 7 is a schematic view of the structure of embodiment 3 of the torque repeat deviation testing apparatus for valve electric actuator according to the present invention.
Fig. 8 is a schematic view of the structure of embodiment 3 of the torque repeat deviation testing apparatus for a valve electric actuator according to the present invention.
Wherein: the test device comprises a test bent plate 1, a test bench 2, a valve electric device 3, a torque shaft 4, a torque arm 5, a pressure sensor 6, an adjusting block 7, an output shaft a8, an upper box cover 9, an upper box cover spigot 9-1, a planetary gear 10, a spacer 11, a planetary shaft 12, a central gear 13, an output disc 14, an output disc spigot 14-1, an output disc external thread 14-2, a bearing a 15, an adjusting ring 16, a bearing b 17, a pressing ring 18, a base 19, a sealing plate 20, a lock nut 21, a flat key 22, a screw a 23, a screw b 24 and a screw c 25.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are exemplified and the detailed description is made in conjunction with the accompanying drawings.
Example 1: the utility model provides a valve electric actuator torque repetition deviation test device (see fig. 3, fig. 4), includes experimental bent plate 1, test bench 2, moment arm 5, pressure sensor 6 and adjusting block 7, 2 experimental bent plate 1 of test bench fixed connection, 1 fixed connection valve electric actuator 3 of experimental bent plate, pressure sensor 6 places on adjusting block 7 of experimental bent plate 1 both sides, and its characterized in that still includes the output cover, the output cover is through flat key 22 connection valve electric actuator 3, the splined connection output cover is passed through to the one end of moment arm 5, the contact surface of the other end of moment arm 5 aligns with pressure sensor 6's contact level.
The test bed 2 is fixedly connected with the test bent plate 1 through a screw b 24.
The test bent plate 1 is fixedly connected with the valve electric device 3 through a screw a 23.
The output part sleeve comprises an output shaft a8, an upper box cover 9, a planetary gear 10, a spacer 11, a planetary shaft 12, a sun gear 13, an output disc 14, a bearing a 15 and a base 19; the base 19 is fixedly connected with the test bent plate 1, and the upper box cover 9 is fixedly connected with the base 19; the bearing a 15 is matched with a shaft hole of the base 19, the output shaft a8 is matched with the shaft hole of the bearing a 15, and the central gear 13 is fixedly connected with the output shaft a 8; the central gear 13 is meshed with the planet gear 10, and the planet gear 10 is meshed with an internal gear of the base 19; the planet shaft 12 is in interference fit with a shaft hole of the output disc 14, the spacer bush 11 is in clearance fit with the planet shaft 12, and the planet gear 10 is in interference fit with the spacer bush 11; the output end of the output disc 14 is connected with the moment arm 5 through a spline, and the root of the spline of the output end of the output disc 14 is in clearance fit with the upper box cover 9.
The base 19 is fixedly connected with the test bent plate 1 through a screw a 23.
The upper case cover 9 is fixedly connected with the base 19 through a screw a 23.
The sun gear 13 is fixedly connected to the output shaft a8 via a flat key 22.
The working principle of the embodiment is as follows: after the valve electric actuator 3 operates, the output shaft a8 is driven to rotate so as to drive the sun gear 13 to rotate, and the planetary gear 10 performs revolution motion between the internal gear of the base 19 and the sun gear 13 and performs rotation motion around the spacer 11. The revolution motion of the planetary gear 10 drives the planetary shaft 12 to perform revolution motion, thereby driving the output disc 14 to perform rotation motion. The moment arm 5 is in splined connection with the output disc 14, and the moment arm 5 is driven to act on the pressure sensor 6 under the rotation of the output disc 14. The torque output by the valve actuator 3 is now the product of the pressure transducer reading 6 and the length of the moment arm 5.
Example 2: the utility model provides a valve electric actuator torque repetition deviation test device (see fig. 5, 6), includes experimental bent plate 1, test bench 2, moment arm 5, pressure sensor 6 and adjusting block 7, 2 experimental bent plate 1 of test bench fixed connection, 1 fixed connection valve electric actuator 3 of experimental bent plate, pressure sensor 6 places on adjusting block 7 of experimental bent plate 1 both sides, and its characterized in that still includes the output portion cover, the output portion cover is through flat key connection valve electric actuator 3, the spline connection output portion cover is passed through to the one end of moment arm 5, the contact surface of the other end of moment arm 5 aligns with pressure sensor 6's contact level.
The test bed 2 is fixedly connected with the test bent plate 1 through a screw b 24.
The test bent plate 1 is fixedly connected with the valve electric device 3 through a screw a 23.
The output part sleeve comprises an output shaft a8, an upper box cover 9, a planetary gear 10, a spacer 11, a planetary shaft 12, a sun gear 13, an output disc 14, a bearing a 15 and a base 19; the base 19 is fixedly connected with the test bent plate 1, and the upper box cover 9 is fixedly connected with the base 19; the bearing a 15 is matched with a shaft hole of the base 19, the output shaft a8 is matched with the shaft hole of the bearing a 15, and the central gear 13 is fixedly connected with the output shaft a 8; the sun gear 13 is meshed with the planet gear 10, and the planet gear 10 is meshed with an internal gear of the base 19; the planet shaft 12 is in interference fit with a shaft hole of the output disc 14, the spacer bush 11 is in clearance fit with the planet shaft 12, and the planet gear 10 is in interference fit with the spacer bush 11; the output end of the output disc 14 is connected with the moment arm 5 through a spline, and the root of the spline of the output end of the output disc 14 is in clearance fit with the upper box cover 9.
The base 19 is fixedly connected with the test bent plate 1 through a screw a 23.
The upper case cover 9 is fixedly connected with the base 19 through a screw a 23.
The sun gear 13 is fixedly connected with the output shaft a8 through a flat key 22.
The output part sleeve further comprises a bearing b 17 and a pressing ring 18, an upper box cover spigot 9-1 is arranged on the upper box cover 9, the bearing b 17 is in radial clearance fit with the upper box cover spigot 9-1, the bearing b 17 is axially fixedly connected with the upper box cover spigot 9-1 through the pressing ring 18, and the pressing ring 18 is fixedly connected with the upper box cover 9 through a screw c 25.
The working principle of the embodiment is as follows: after the valve electric actuator 3 operates, the output shaft a8 is driven to rotate so as to drive the sun gear 13 to rotate, and the planetary gear 10 performs revolution motion between the internal gear of the base 19 and the sun gear 13 and performs rotation motion around the spacer 11. The revolution motion of the planetary gear 10 drives the planetary shaft 12 to perform revolution motion, thereby driving the output disc 14 to perform rotation motion. The moment arm 5 is in splined connection with the output disc 14, and the moment arm 5 is driven to act on the pressure sensor 6 under the rotation of the output disc 14. The torque output by the valve actuator 3 is now the product of the pressure sensor reading 6 and the length of the moment arm 5.
Through the bearing b 17 arranged on the upper box cover and the corresponding pressure ring 18, the radial concentricity of the output disc 14 and the moment arm 5 is ensured, so that the stability of the meshing transmission of related gears is ensured, and the stable and uniform speed of the moment arm 5 acting on the pressure sensor 6 is indirectly ensured.
Example 3: the utility model provides a valve electric actuator torque repetition deviation test device (see fig. 7, fig. 8), includes experimental bent plate 1, test bench 2, moment arm 5, pressure sensor 6 and adjusting block 7, the experimental bent plate 1 of 2 fixed connection of test bench, 1 fixed connection valve electric actuator 3 of experimental bent plate, pressure sensor 6 places on the adjusting block 7 of experimental bent plate 1 both sides, and its characterized in that still includes the output cover, the output cover is through flat key connection valve electric actuator 3, the splined connection output cover is passed through to the one end of moment arm 5, the contact surface of the other end of moment arm 5 aligns with pressure sensor 6's contact level.
The test bed 2 is fixedly connected with the test bent plate 1 through a screw b 24.
The test bent plate 1 is fixedly connected with the valve electric device 3 through a screw a 23.
The output part sleeve comprises an output shaft a8, an upper box cover 9, a planetary gear 10, a spacer 11, a planetary shaft 12, a sun gear 13, an output disc 14, a bearing a 15 and a base 19; the base 19 is fixedly connected with the test bent plate 1, and the upper box cover 9 is fixedly connected with the base 19; the bearing a 15 is matched with a shaft hole of the base 19, the output shaft a8 is matched with the shaft hole of the bearing a 15, and the central gear 13 is fixedly connected with the output shaft a 8; the sun gear 13 is meshed with the planet gear 10, and the planet gear 10 is meshed with an internal gear of the base 19; the planet shaft 12 is in interference fit with a shaft hole of the output disc 14, the spacer bush 11 is in clearance fit with the planet shaft 12, and the planet gear 10 is in interference fit with the spacer bush 11; the output end of the output disc 14 is connected with the moment arm 5 through a spline, and the root of the spline of the output end of the output disc 14 is in clearance fit with the upper box cover 9.
The base 19 is fixedly connected with the test bent plate 1 through a screw a 23.
The upper case cover 9 is fixedly connected with the base 19 through a screw a 23.
The sun gear 13 is fixedly connected with the output shaft a8 through a flat key 22.
The output part sleeve further comprises an adjusting ring 16, a sealing plate 20 and a locking nut 21, an output disc spigot 14-1 is arranged at the root of a spline of the output disc 14, an output disc external thread 14-2 is arranged at the top of the spline of the output disc 14, the adjusting ring 16 is in clearance fit with the output disc spigot 14-1, the sealing plate 20 is in clearance fit with the output disc 14, the locking nut 21 is in threaded connection with the output disc external thread 14-2, and the moment arm 5 is axially fixedly connected with the output disc 14 through the sealing plate 20.
The working principle of the embodiment is as follows: after the valve electric actuator 3 operates, the output shaft a8 is driven to rotate so as to drive the sun gear 13 to rotate, and the planetary gear 10 performs revolution motion between the internal gear of the base 19 and the sun gear 13 and performs rotation motion around the spacer 11. The revolution motion of the planetary gear 10 drives the planetary shaft 12 to perform revolution motion, thereby driving the output disc 14 to perform rotation motion. The moment arm 5 is in splined connection with the output disc 14, and the moment arm 5 is driven to act on the pressure sensor 6 under the rotation of the output disc 14. The torque output by the valve actuator 3 is now the product of the pressure sensor reading 6 and the length of the moment arm 5.
By mounting the adjusting ring 16 and the locking nut 21, the axial positioning of the moment arm 5 relative to the output disc 14 is ensured, and the position of the moment arm 5 acting on the pressure sensor 6 in both directions of opening and closing of the valve electric actuator 3 is indirectly ensured to be stable.
Claims (9)
1. The utility model provides a valve electric actuator torque repetition deviation test device, includes experimental bent plate, test bench, moment arm, pressure sensor and adjusting block, the experimental bent plate of test bench fixed connection, experimental bent plate fixed connection valve electric actuator, pressure sensor places on the adjusting block of experimental bent plate both sides, and its characterized in that still includes the output portion cover, the output portion cover is through flat key connection valve electric actuator, the one end of moment arm is passed through the splined connection output portion cover, the contact surface of the other end of moment arm aligns with pressure sensor's contact level.
2. The device for testing the torque repeat deviation of the valve electric actuator according to claim 1, wherein the test bed is fixedly connected with the test bent plate through a screw b.
3. The valve actuator torque repeat bias test device of claim 1, wherein said test flexural plate is fixedly connected to said valve actuator by a screw a.
4. The torque repetition deviation test device for the valve electric device is characterized in that the output part sleeve comprises an output shaft a, an upper box cover, a planetary gear, a spacer bush, a planetary shaft, a central gear, an output disc, a bearing a and a base; the base is fixedly connected with the test bent plate, and the upper box cover is fixedly connected with the base; the bearing a is matched with a shaft hole of the base, the output shaft a is matched with the shaft hole of the bearing a, and the central gear is fixedly connected with the output shaft a; the central gear is meshed with a planetary gear, and the planetary gear is meshed with an internal gear of the base; the planet shaft is in interference fit with the shaft hole of the output disc, the spacer bush is in clearance fit with the planet shaft, and the planet gear is in interference fit with the spacer bush; the output end of the output disc is connected with the moment arm through a spline, and the root of the spline of the output end of the output disc is in clearance fit with the upper box cover.
5. The device for testing the torque repeat deviation of the valve electric actuator according to claim 4, wherein the base is fixedly connected with the test bending plate through a screw a.
6. The device for testing the torque repeat deviation of the valve electric actuator according to claim 4, wherein the upper cover is fixedly connected with the base through a screw a.
7. The device for testing the torque repetition deviation of the valve electric actuator according to claim 4, wherein the sun gear is fixedly connected with the output shaft a through a flat key.
8. The device for testing the torque repeat deviation of the valve electric device according to claim 4, wherein the output portion sleeve further comprises a bearing b and a pressing ring, the upper box cover is provided with an upper box cover spigot, the bearing b is in radial clearance fit with the upper box cover spigot, the bearing b is axially and fixedly connected with the upper box cover spigot through the pressing ring, and the pressing ring is fixedly connected with the upper box cover through a screw c.
9. The device of claim 4, wherein the output sleeve further comprises an adjusting ring, a sealing plate and a locking nut, the root of the output disc spline is provided with an output disc spigot, the top of the output disc spline is provided with an output disc external thread, the adjusting ring is in clearance fit with the output disc spigot, the sealing plate is in clearance fit with the output disc, the locking nut is in threaded connection with the output disc external thread, and the torque arm is axially fixedly connected with the output disc through the sealing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221354121.2U CN217738513U (en) | 2022-06-01 | 2022-06-01 | Torque repeated deviation testing device for valve electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221354121.2U CN217738513U (en) | 2022-06-01 | 2022-06-01 | Torque repeated deviation testing device for valve electric device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217738513U true CN217738513U (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221354121.2U Active CN217738513U (en) | 2022-06-01 | 2022-06-01 | Torque repeated deviation testing device for valve electric device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217738513U (en) |
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2022
- 2022-06-01 CN CN202221354121.2U patent/CN217738513U/en active Active
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