Performance evaluation device for water meter counter
The water meter counter performance evaluation device, which combines a magnetic ring and a rotating magnet, solves the problem of cumbersome traditional testing, realizes automated and rapid performance evaluation, and improves testing efficiency and accuracy.
Patent Information
- Application Number
- CN202520550736.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Traditional water meter counter performance testing requires the construction of a sealed circulating water channel, which is cumbersome and inefficient.
By employing a combination of magnetic rings and rotating magnets, the impeller speed is controlled by adjusting the motor current. Combined with photoelectric sensors and current sensors, the performance of the counter is detected, thus automating the testing of the counter's accuracy and sensitivity.
It simplifies the testing process, improves testing efficiency and accuracy, reduces human error, and enables rapid assessment of whether the counter's performance meets the standards.
Smart Images
Figure CN223807957U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of test equipment, in particular to a performance evaluation device of a water meter counter. BACKGROUND
[0002] The water meter counter is an important component of the water meter, which is used to record and display the water consumption of the user, and provides the basis for the cost settlement between the water supply company and the user. The traditional water meter usually adopts a mechanical counter, which records the water consumption through the mechanical transmission of the gear and the counter. The counter is connected with the impeller gear in the water meter, the water flow drives the impeller to rotate, and the impeller gear drives the counter to count.
[0003] The counter needs to be detected for performance evaluation after production. Generally, the precision of the counter is fed back by driving the counter to reach a minimum water flow of a certain speed. The smaller the water flow reaches the required speed of the counter, the more sensitive the counter is fed back, which reflects that the counting precision of the counter is higher and the performance is better.
[0004] The existing water meter counter starting test drives the impeller on the counter to rotate by water flow, adjusts the driving force by adjusting the flow size of the test water flow, and tests the performance of the counter. However, the traditional test method needs to build a sealed circulating water flow channel, and the test operation is relatively cumbersome, so it needs to be further improved. CONTENT OF THE INVENTION
[0005] In order to improve the test efficiency of the counter, the present application provides a performance evaluation device of a water meter counter.
[0006] The performance evaluation device of the water meter counter provided by the present application adopts the following technical scheme:
[0007] A performance evaluation device of a water meter counter, comprising a test rack, a test platform fixedly connected to the test rack, and a moving table provided on the test rack and located below the test platform, the upper end surface of the test platform has a positioning groove for positioning and placing the counter, the bottom inner wall of the positioning groove is provided with a detection hole, the impeller rotating shaft of the counter is fixedly sleeved with a magnetic ring which is built-in the detection hole, the moving table is provided with a speed regulation motor which can change the rotating speed of the output shaft by adjusting the input current, the output shaft of the speed regulation motor is fixedly connected with a rotating magnet for controlling the rotation of the magnetic ring, the test platform is provided with a rotating speed detection piece for detecting the rotating speed of the impeller rotating shaft, and the moving table is provided with a current detection piece for detecting the current input to the speed regulation motor.
[0008] By adopting the technical scheme, during testing, the counter to be tested is placed behind the positioning groove of the test bench, the magnetic ring on the impeller rotating shaft is placed in the detection hole, the rotating magnet is started to rotate by the speed regulation motor, the magnetic ring is rotated by the magnetic force of the rotating magnet, thereby driving the impeller rotating shaft to rotate, the current input into the speed regulation motor is increased or decreased until the impeller rotating shaft can reach the specified rotating speed, and the current value I at this time is recorded. If the current value I is less than the set value, it is indicated that the performance of the counter meets the standard, otherwise, it does not meet the standard. The smaller the current value I is, the lower the energy consumption required by the counter to reach the specified rotating speed is, thereby reflecting that the sensitivity performance of the counter is better.
[0009] Preferably, the mobile platform is slidably connected to the test rack, the test rack is provided with a driving mechanism for driving the mobile platform to slide, and the test rack is provided with a timer for recording the rotating time of the impeller rotating shaft.
[0010] By adopting the technical scheme, after the current value I is recorded, the mobile platform is driven to slide by the driving mechanism, so that the rotating magnet is away from the magnetic ring, thereby removing the magnetic force applied to the magnetic ring. After the mobile platform moves, the timer is started until the impeller rotating shaft of the counter is stationary, and the free running time T of the impeller rotating shaft is recorded. If the free running time T is greater than the set value, it is indicated that the performance of the counter meets the standard, otherwise, it does not meet the standard. The greater the free running time T is, the better the sensitivity performance of the counter is.
[0011] Preferably, the test rack is slidably connected with a sliding block in the vertical direction, the mobile platform is fixedly connected to the sliding block, the driving mechanism comprises a lead screw threadedly penetrating the sliding block and being rotatably connected to the test rack, and a lifting motor fixedly connected to the test rack for driving the lead screw to rotate.
[0012] By adopting the technical scheme, the lifting motor drives the lead screw to rotate, and the sliding block slides along the axial direction of the lead screw under the thread limiting action of the lead screw, thereby realizing the lifting of the mobile platform.
[0013] Preferably, the test rack is fixedly connected with a guide rail below the mobile platform, the guide rail is horizontally arranged, the mobile platform is fixedly connected with a sliding seat slidably connected to the guide rail, and the driving mechanism comprises a telescopic cylinder fixedly connected to one side of the test rack, and a piston rod of the telescopic cylinder is fixedly connected to the mobile platform.
[0014] By adopting the technical scheme, the piston rod of the telescopic cylinder is retracted to realize the stable horizontal movement of the mobile platform, thereby quickly moving the rotating magnet away from the magnetic ring after the test is completed, and removing the magnetic force acting on the magnetic ring.
[0015] Preferably, the test rack is provided with an observation camera above the counter for observing the value change on the counter.
[0016] By adopting the above technical scheme, the observation camera is located above the counter, the change of the counter value can be clearly captured, the automation degree and accuracy of the test are improved, and human error is effectively reduced.
[0017] Preferably, the rotation speed detection member is an optical sensor.
[0018] Preferably, the current detection member is a current sensor.
[0019] In summary, the utility model has the following beneficial effects:
[0020] 1. During the test, the counter to be tested is placed behind the positioning groove of the test platform, the magnetic ring on the impeller shaft is placed in the detection hole, the speed regulating motor is started to drive the rotating magnet to rotate, the magnetic ring is driven to rotate under the magnetic force of the rotating magnet, thereby driving the impeller shaft to rotate, the current flowing into the speed regulating motor is increased or decreased until the impeller shaft can reach the specified rotating speed, and the current value I at this time is recorded.
[0021] 2. After the current value I is recorded, the moving platform is driven to slide through the driving mechanism, so that the rotating magnet is away from the magnetic ring, thereby removing the magnetic force applied to the magnetic ring. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a schematic view of the overall structure of a performance evaluation device of a water meter counter in embodiment 1;
[0023] Figure 2 is a front view of the test rack in embodiment 1;
[0024] Figure 3 is a schematic view of the structure of the test platform in embodiment 1;
[0025] Figure 4 is a schematic view of the structure of the counter in embodiment 1;
[0026] Figure 5 is a schematic view of the structure of the driving mechanism in embodiment 2.
[0027] In the figure, 1, test rack; 11, test base plate; 12, test vertical plate; 13, test top plate; 14, support vertical plate; 15, guide rod; 16, observation camera; 17, guide rail; 2, test platform; 21, detection seat; 211, sink groove; 212, through hole; 213, mounting sleeve; 214, positioning hole; 215, limiting bolt; 216, circuit board; 217, photoelectric sensor; 22, tooling seat; 221, positioning groove; 222, detection hole; 223, positioning column; 3, moving platform; 31, speed regulation motor; 32, rotating magnet; 33, sliding block; 34, sliding seat; 4, driving mechanism; 41, lead screw; 42, lifting motor; 43, air cylinder; 5, industrial control display machine; 10, magnetic ring. DETAILED DESCRIPTION
[0028] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The application is further described in detail.
[0029] Example 1
[0030] The embodiment of the application discloses a performance evaluation device of a water meter counter, which refers to Figure 1 , Figure 2 , comprising a test rack 1, a test platform 2 fixedly connected to the test rack 1, and a moving platform 3 arranged below the test platform 2 and on the test rack 1.
[0031] The test rack 1 comprises a test base plate 11, a test vertical plate 12 fixedly connected to the rear side of the test base plate 11, and a test top plate 13 fixedly connected to the upper part of the test vertical plate 12. The outer side wall of the test vertical plate 12 is fixedly connected to a pair of support vertical plates 14 which are located below the test top plate 13 and are spaced apart, and the test platform 2 is arranged above the support vertical plates 14. In this embodiment, the moving platform 3 is vertically slidably connected to the test rack 1, specifically, a guide rod 15 is fixedly connected between the test top plate 13 and the test base plate 11, the guide rod 15 is vertically arranged and located between the two support vertical plates 14, and the moving platform 3 is fixedly connected with a sliding block 33 which is slidably arranged on the guide rod 15.
[0032] The test rack 1 is provided with a driving mechanism 4 for driving the moving platform 3 to slide, the driving mechanism 4 comprises a lead screw 41 which is rotationally connected between the test base plate 11 and the test top plate 13 and is threadedly arranged in the sliding block 33, and a lifting motor 42 which is fixedly connected to the upper end surface of the test top plate 13 to drive the lead screw 41 to rotate, the axial direction of the lead screw 41 is parallel to the axial direction of the guide rod 15, and the output shaft of the lifting motor 42 is coaxially fixedly connected to the upper part of the lead screw 41.
[0033] Referring to Figure 3 , Figure 4The test platform 2 includes a test base 21 fixedly connected between the upper surfaces of two supporting vertical plates 14 and a fixture base 22 detachably connected to the upper surface of the test base 21. The test base 21 is fixedly connected to the supporting vertical plates 14 by bolts. The upper surface of the fixture base 22 has a positioning groove 221 for positioning the counter, and the bottom inner wall of the positioning groove 221 has a through-hole 222. The impeller shaft of the counter is fixedly fitted with a magnetic ring 10, which is coaxially built into the detection hole 222.
[0034] The upper end face of the testing seat 21 has a recess 211, and the bottom inner wall of the recess 211 has a through hole 212 that connects to the testing hole 222. The upper end face of the testing seat 21 has a positioning hole 214, and multiple positioning holes 214 are provided. The lower end face of the tooling seat 22 has a positioning pin 223 that is inserted into the positioning hole 214. The upper end face of the mounting sleeve 213 is fixedly inserted through the upper end face of the testing seat 21. The upper end face of the mounting sleeve 213 is flush with the upper end face of the testing seat 21, and the lower end face of the mounting sleeve 213 protrudes from the lower end face of the testing seat 21. The inner hole of the mounting sleeve 213 is a threaded hole. The tooling seat 22 is fixedly connected to the testing seat 21 by mounting bolts, and the mounting bolts are threaded into the threaded hole of the mounting sleeve 213.
[0035] The lower end face of the detection base 21 is fixedly connected to a circuit board 216 for data acquisition. The circuit board 216 is equipped with a speed detection element for detecting the speed of the impeller shaft. The speed detection element can be a photoelectric sensor 217, which is built into the through hole 212.
[0036] Reference Figure 1 , Figure 2 A camera 16 is fixedly connected to the lower end face of the test top plate 13, located above the counter for observing changes in the counter value. The camera 16 can be a webcam or an industrial camera. A speed-regulating motor 31 is fixedly connected to the upper end face of the moving stage 3, whose output shaft speed can be changed by adjusting the magnitude of the input current. The output shaft of the speed-regulating motor 31 and the detection hole 222 are coaxially arranged. A rotating magnet 32 located below the detection seat 21 is fixedly connected to the output shaft of the speed-regulating motor 31 for controlling the rotation of the magnetic ring 10. The moving stage 3 is equipped with a current detection element, which is a current sensor, to detect the current supplied to the speed-regulating motor 31. A limit bolt 215 is threadedly connected to the lower end face of the detection seat 21, and the lower end face of the limit bolt 215 abuts against the upper end face of the moving stage 3. An industrial control display 5 is installed on one side of the test frame 1. The industrial control display 5 is equipped with a timer for recording the rotation time of the impeller shaft. The industrial control display 5 can display the observation screen of the observation camera 16, display the rotation speed data of the impeller shaft, display the current data of the variable speed motor, and display the free running time of the impeller shaft.
[0037] The implementation principle of the performance evaluation device of the water meter counter according to the embodiment of the application is as follows: during the test, the counter to be tested is placed in the positioning groove 221 on the tool seat 22, the magnetic ring 10 on the impeller shaft is placed in the detection hole 222, the rotating magnet 32 is started to drive the rotating magnet 32 to rotate, the magnetic ring 10 is driven to rotate under the magnetic force of the rotating magnet 32, thereby driving the impeller shaft to rotate, increasing or decreasing the current input to the speed regulation motor 31 until the impeller shaft can reach a specified rotating speed, and recording the current value I at this time; then the lifting motor 42 drives the lead screw 41 to rotate, thereby driving the moving table 3 to move downward, so that the rotating magnet 32 is away from the magnetic ring 10, thereby removing the magnetic force applied to the magnetic ring 10, the moving table 3 moves downward, and the timer is started until the impeller shaft of the counter is stationary, when the moving table 3 moves downward, the timer starts timing, when the rotating speed of the impeller shaft is 0, the timer stops timing, and the free running time T of the impeller shaft is recorded, if the current value I is less than the set value and the free running time T is greater than the set value, it is indicated that the performance of the counter meets the standard, otherwise, it does not meet the standard.
[0038] Embodiment 2:
[0039] The difference from the embodiment 1 is that, referring to Figure 5 , the upper end surface of the test base plate 11 is fixedly connected with the guide rail 17 located below the moving table 3, the guide rail 17 is horizontally arranged, the lower end surface of the moving table 3 is fixedly connected with the sliding seat 34 slidably connected to the guide rail 17, and the driving mechanism 4 is the telescopic cylinder fixedly connected to the upper end surface of the test base plate 11 and located on one side of the moving table 3, the telescopic cylinder is the air cylinder 43, and the piston rod of the air cylinder 43 is fixedly connected to the outer wall of the moving table 3.
[0040] When the piston rod of the air cylinder 43 is elongated, the speed regulation motor is located directly below the detection seat 21, when the piston rod of the air cylinder 43 is retracted, the moving table 3 is driven to slide out, so that the rotating magnet 32 is away from the magnetic ring 10, and the magnetic force acting on the magnetic ring 10 is removed, when the piston rod of the air cylinder 43 is retracted, the timer starts timing, and when the rotating speed of the impeller shaft is 0, the timer stops timing.
[0041] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, so: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.
Claims
1. A performance evaluation device for a water meter counter, characterized by: Including test rack (1), fixedly connected to the test rack (1) test platform (2) and setting in the test rack (1) and below the test platform (2) mobile station (3), the upper end surface of the test platform (2) has the positioning slot (221) for the counter positioning placement, the bottom inner wall of the positioning slot (221) is provided with detection hole (222), the impeller shaft of the counter is fixedly provided with the magnetic ring (10) built-in detection hole (222), the mobile station (3) is provided with the speed regulation motor (31) that can change the output shaft rotating speed by adjusting the current input, the output shaft of the speed regulation motor (31) is fixedly connected with the rotating magnet (32) for controlling the rotation of the magnetic ring (10), the test platform (2) is provided with the rotating speed detection piece for detecting the rotating speed of the impeller shaft, and the mobile station (3) is provided with the current detection piece for detecting the current input to the speed regulation motor (31).
2. The performance evaluation device for water meter counter according to claim 1, characterized in that: The mobile station (3) is slidably connected to the test rack (1), and the test rack (1) is provided with a driving mechanism (4) for driving the mobile station (3) to slide.
3. A performance evaluation device for a water meter counter as claimed in claim 2, characterized in that: The test rack (1) is vertically slidably connected with a sliding block (33), and the mobile station (3) is fixedly connected to the sliding block (33).
4. The performance evaluation device for water meter counter according to claim 2, wherein: The driving mechanism (4) includes a lead screw (41) rotatably connected to the test rack (1) and threadedly penetrating the sliding block (33), and a lifting motor (42) fixedly connected to the test rack (1) to drive the lead screw (41) to rotate.
5. The performance evaluation device for water meter counter according to claim 1, wherein: The test rack (1) is fixedly connected with a guide rail (17) below the mobile station (3), and the guide rail (17) is horizontally arranged.
6. The performance evaluation device for water meter counter according to claim 1, wherein: The test rack (1) is provided with an observation camera (16) above the counter for observing the value change on the counter.
7. The performance evaluation device for water meter counter according to claim 1, wherein: The rotating speed detection piece is an optical sensor (217). The current detection piece is a current sensor.