CN108362912B - Flow velocity meter calibrating device and calibrating method thereof - Google Patents
Flow velocity meter calibrating device and calibrating method thereof Download PDFInfo
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- CN108362912B CN108362912B CN201810367379.8A CN201810367379A CN108362912B CN 108362912 B CN108362912 B CN 108362912B CN 201810367379 A CN201810367379 A CN 201810367379A CN 108362912 B CN108362912 B CN 108362912B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 230000007306 turnover Effects 0.000 claims abstract description 44
- 238000012795 verification Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
- G01P21/025—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers for measuring speed of fluids; for measuring speed of bodies relative to fluids
Abstract
The invention discloses a flow rate meter calibrating device and a calibrating method thereof, wherein the flow rate meter calibrating device comprises a flow rate meter mounting rod, a vertical frame, a sliding seat, a turnover bracket, a manual-automatic lifting driving mechanism, a turnover driving mechanism and a reversing mechanism; the manual-automatic integrated lifting driving mechanism drives the sliding seat to do lifting motion, and the overturning driving mechanism drives the overturning bracket to do overturning motion; the reversing mechanism drives the flow velocity meter mounting rod to rotate; through reversing of the reversing mechanism, the flow velocity meter can detect in the round trip process of the verification vehicle, and verification efficiency is improved; the water inlet depth of the flow velocity meter is controlled by the manual-automatic lifting driving mechanism, and the flow velocity meter is controlled in a manual mode and an automatic mode, has high flexibility and meets different use requirements; meanwhile, the overturning driving mechanism has a self-locking function, so that when a worker is convenient to replace the flow rate meter, the overturning bracket can be prevented from reversing during overturning, convenience is brought to use, working stability is good, implementation is easy, and wide popularization is facilitated.
Description
Technical Field
The invention relates to the technical field of water conservancy hydrologic tests, in particular to a flow meter calibrating device and a calibrating method.
Background
The water resources in China are complex, in the hydrologic information, the flow velocity of water is an important hydrologic information, so that accurate measurement of the flow velocity is crucial to the accuracy of the hydrologic information, the performance index of a flow velocity verification system is improved, and the accuracy of use of a flow velocity meter and a water metering device is guaranteed. Because the environment of hydrologic information is different, influence the life of flow rate appearance, so need carry out periodic verification and maintenance to the flow rate appearance, confirm the performance again. The flow velocity is measured by a special flow velocity meter, and the flow velocity meter is widely applied to the fields of rivers, lakes, seas and the like to measure the water flow velocity.
According to the requirements of the total technical conditions of the hydrological instrument, the accuracy of the flow velocity instrument is required to be detected, namely, the flow velocity instrument is detected by a flow velocity instrument detecting vehicle, so that the work of the flow velocity instrument can be ensured to meet the national standard requirements. Therefore, before the use of the flow rate meter or after a certain period of use (usually one year), various parameters of the flow rate meter need to be re-assessed according to the national water conservancy division ' SL/T150-95 ' method for calibrating rotor-type flow rate meters in straight open grooves '. Verification principle of the flow velocity meter: two straight rails are erected on two sides of a rectangular water tank, and the verification vehicle is arranged on the rails to move back and forth. The flow velocity meter is fixed on the verification vehicle and is placed in water, the water depth is 0.6m to 1.0m, and the parallel deviation between the horizontal axis of the flow velocity meter and the track of the verification groove is not more than 3 degrees. The water injected into the water tank is stationary during measurement, and when the verification vehicle reciprocates on the rails on both sides of the water tank at a constant speed (between 0.01 and 6.0 m/s), the verification vehicle is stationary relative to the flow meter, and the water in the water tank flows at the vehicle speed. Under the condition that the speed of the verification vehicle is determined, the revolution of the rotor of the flow meter and the corresponding time are recorded, the revolution of the flow meter when the verification vehicle drives the flow meter to move is measured, the measured revolution is converted into the flow rate of the flow meter through a series of corresponding formulas and is compared with the known speed, the error of the flow meter during detection is obtained according to the comparison result, and the accuracy of the flow meter during working is assessed.
When the traditional flowmeter verification vehicle realizes lifting, overturning and reversing on the flowmeter, the adopted method is single. The lifting and reversing of the flow velocity meter cannot be automated on a traditional verification vehicle, the flow velocity meter rod must be taken down from the flow velocity meter verification vehicle by manpower, then the flow velocity meter is replaced and adjusted, a large amount of manpower is wasted, and the detection efficiency is low. Therefore, improving the automation degree and efficiency of the flow meter verification are important problems to be solved in front of the present invention.
Disclosure of Invention
Aiming at the defects, one of the purposes of the invention is to provide a flow velocity meter calibrating device which has reasonable structural design, convenient operation and effectively improves the working efficiency
The second objective of the present invention is to provide a verification method for a flow meter verification device.
The invention provides the technical scheme for realizing the aim that:
the utility model provides a current meter calibrating device, its includes current meter installation pole, vertical frame, slide, upset support, manual-automatic lifting drive mechanism, upset actuating mechanism and reversing mechanism, the slide passes through the slide rail activity to be set up on the vertical frame, manual-automatic lifting drive mechanism sets up on the vertical frame to can drive the slide and make the lift action relative to the vertical frame, upset actuating mechanism sets up on the slide, upset support sets up on the output shaft of upset actuating mechanism, and is driven by this upset actuating mechanism and make the upset action; the flow velocity meter mounting rod is arranged on the overturning bracket through the bearing assembly, and the reversing mechanism is arranged on the overturning bracket and can drive the flow velocity meter mounting rod to rotate.
A method of calibrating a flow meter calibration apparatus comprising the steps of:
(1) A turnover driving mechanism is arranged for driving the turnover bracket to perform upward or downward turnover actions;
(2) A manual-automatic lifting driving mechanism is arranged for manually or electrically adjusting the lifting action of the overturning bracket;
(3) Setting a flow rate meter mounting rod for mounting the flow rate meter;
(4) The mounting rod of the flow velocity meter is arranged on the overturning bracket through the bearing assembly, and the overturning bracket can overturn and lift at any time;
(5) A reversing mechanism is arranged on the turnover bracket and used for controlling the rotation of the installation rod of the flow velocity meter so that the flow velocity meter can rotate 180 degrees or-180 degrees;
(6) The turnover support is driven by the turnover driving mechanism to turn downwards, so that the flow velocity meter on the flow velocity meter mounting rod stretches into water; at this time, the water inlet depth of the flow velocity meter is controlled by the manual-automatic lifting driving mechanism, and then the flow velocity meter can rotate 180 degrees or-180 degrees through the reversing of the reversing mechanism according to the round-trip direction of the verification vehicle, so that the flow velocity meter can be detected in the round-trip process of the verification vehicle, and the verification purpose is realized.
As an improvement of the invention, the manual-automatic lifting driving mechanism comprises a double-shaft motor, a hand wheel, a ball screw and a nut matched with the ball screw, wherein the ball screw is arranged on the front surface of a vertical frame through a bearing, the double-shaft motor is vertically arranged at the top of the vertical frame, and the lower end of a driving shaft of the double-shaft motor is connected with the upper end of the ball screw; the nut is arranged on the sliding seat and is matched with the ball screw, and the hand wheel is arranged at the upper end of the driving shaft of the double-extension-shaft motor.
As an improvement of the invention, the turnover support comprises an upper transverse frame, a connecting support and two vertical frames, wherein the upper ends of the two vertical frames are symmetrically connected with the two ends of the upper transverse frame, and the connecting support is arranged at the lower end of one of the vertical frames.
As an improvement of the invention, the turnover driving mechanism comprises a turnover motor and a worm gear reducer, wherein the worm gear reducer is fixed on the sliding seat, one end of an output shaft of the worm gear reducer is fixed on the connecting support, and the other end of the output shaft is fixed at the lower end position of the other vertical frame.
As an improvement of the invention, the bearing assembly comprises an upper bearing and a lower bearing, the lower bearing is arranged on the connecting support, the upper bearing is arranged on the upper transverse frame and is aligned with the lower bearing, and the lower part of the flow velocity meter mounting rod is arranged on the upper bearing and the lower bearing in a penetrating way.
As an improvement of the invention, the reversing mechanism comprises a reversing motor, a driving gear and a transmission gear, wherein the transmission gear is arranged at the lower end of the flow meter mounting rod, one side position of the reversing motor corresponding to the flow meter mounting rod is arranged on the connecting support, and the driving gear is arranged on a driving shaft of the reversing motor and meshed with the transmission gear.
The beneficial effects of the invention are as follows: the scheme of the invention has ingenious and reasonable design, can realize that the flow velocity meter can detect in the round trip process of the verification vehicle by reversing the reversing mechanism, and improves the verification efficiency; the water inlet depth of the flow velocity meter is controlled by the manual-automatic lifting driving mechanism, and the flow velocity meter is controlled in a manual mode and an automatic mode, has high flexibility and meets different use requirements; the worm and gear reducer is arranged in the turnover driving mechanism, and has a self-locking function, so that the turnover driving mechanism is convenient for workers to replace the flow rate meter, and can prevent the turnover bracket from reversing when being turned over, thereby bringing convenience to use, having good working stability, and in addition, the whole structure is compact, easy to realize and beneficial to wide popularization and application.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic exploded view of the present invention.
Fig. 3 is an exploded view of the flip bracket according to the present invention.
Detailed Description
Examples: referring to fig. 1, 2 and 3, the present embodiment provides a flowmeter calibrating device, which includes a flowmeter mounting rod 1, a vertical frame 2, a sliding seat 3, a turnover support 4, an automatic lifting driving mechanism 5, a turnover driving mechanism 6 and a reversing mechanism 7, wherein the sliding seat 3 is movably arranged on the vertical frame 2 through a sliding rail 8, specifically, two sliding rails 8 are symmetrically arranged on the front side of the vertical frame 2, and a sliding block capable of sliding on the sliding rail 8 is arranged on the back surface of the sliding seat 3, so that the purpose that the sliding seat 3 is movably arranged on the vertical frame 2 is achieved.
The manual-automatic lifting driving mechanism 5 is arranged on the vertical frame 2 and can drive the sliding seat 3 to lift relative to the vertical frame 2, the overturning driving mechanism 6 is arranged on the sliding seat 3, and the overturning bracket 4 is arranged on an output shaft of the overturning driving mechanism 6 and is driven by the overturning driving mechanism 6 to overturn; the flow meter mounting rod 1 is arranged on the overturning bracket 4 through a bearing assembly, and the reversing mechanism 7 is arranged on the overturning bracket 4 and can drive the flow meter mounting rod 1 to rotate.
A method of calibrating a flow meter calibration apparatus comprising the steps of:
(1) A turnover driving mechanism 6 is arranged for driving the turnover bracket 4 to perform upward or downward turnover motion;
(2) A manual-automatic lifting driving mechanism 5 is arranged for manually or electrically adjusting the lifting action of the turnover bracket 4;
(3) A flow rate meter mounting rod 1 is arranged for mounting a flow rate meter;
(4) The flowmeter mounting rod 1 is mounted on the turnover bracket 4 through a bearing assembly, and the turnover bracket 4 can perform turnover and lifting actions at any time;
(5) A reversing mechanism 7 is arranged on the turnover bracket 4 and is used for controlling the rotation of the flow velocity meter mounting rod 1 so that the flow velocity meter can rotate 180 degrees or-180 degrees;
(6) The turnover driving mechanism 6 drives the turnover bracket 4 to turn downwards, so that the flow velocity meter on the flow velocity meter mounting rod 1 stretches into water; at this time, the water inlet depth of the flow meter is controlled by the manual-automatic lifting driving mechanism 5, and then the flow meter can rotate 180 degrees or-180 degrees by reversing the reversing mechanism 7 according to the round trip direction of the verification vehicle, so that the flow meter can be detected in the round trip process of the verification vehicle, and the verification purpose is realized.
Referring to fig. 2, the manual-automatic lifting driving mechanism 5 includes a dual-shaft motor 51, a hand wheel 52, a ball screw 53 and a nut adapted to the ball screw 53, wherein the ball screw 53 is disposed on the front surface of the vertical frame 2 through a bearing, the dual-shaft motor 51 is vertically disposed on the top of the vertical frame 2 through an inner hexagonal bolt, and the lower end of a driving shaft of the dual-shaft motor 51 is connected with the upper end of the ball screw 53; the nut is arranged on the sliding seat 3 and is matched with the ball screw 53, the hand wheel 52 is arranged at the upper end of the driving shaft of the double-extension-shaft motor 51, and the hand wheel 52 can be directly screwed by hand, so that the ball screw 53 is driven to rotate by the driving shaft of the double-extension-shaft motor 51, the sliding seat 3 is driven to lift, and the water inlet depth of the flow velocity meter is controlled. The automatic control device has the advantages of manual control and automatic control, high flexibility and capability of meeting different use requirements. In other embodiments, the ball screw pair formed by the ball screw 53 and the nut may be replaced by a rack gear mechanism. The rack transmission mechanism comprises a rack and a gear matched with the rack, the rack is arranged on the front face of the vertical frame 2, the double-extension-shaft motor 51 is transversely arranged on the back face of the sliding seat 3, the gear is arranged at one end of a driving shaft of the double-extension-shaft motor 51 and meshed with the rack, and the hand wheel 52 is arranged at the other end of the driving shaft of the double-extension-shaft motor 51.
Referring to fig. 3, the turnover bracket 4 includes an upper transverse frame 41, a connection support 42, and two vertical frames 43, wherein the upper ends of the two vertical frames 43 are symmetrically connected to both ends of the upper transverse frame 41, and the connection support 42 is disposed at the lower end of one of the vertical frames 43.
The turnover driving mechanism 6 comprises a turnover motor 61 and a worm gear reducer 62, the worm gear reducer 62 is fixed on the sliding seat 3, one end of an output shaft of the worm gear reducer 62 is fixed on the connecting support 42, and the other end of the output shaft is fixed at the lower end position of the other vertical frame 43. Because the worm gear reducer 62 has a self-locking function, the turnover bracket 4 can be prevented from reversing when being turned while a worker can conveniently replace the flow rate meter, and convenience is brought to use and the working stability is good.
The bearing assembly comprises an upper bearing 9 and a lower bearing 10, a through hole is formed in the position, close to one side of the worm gear reducer 62, of the connecting support 42, and the lower bearing 10 is arranged on the through hole; the upper bearing 9 is arranged on the upper transverse frame 41 through the bearing fixing frame 11 and is aligned with the lower bearing 10, and the lower part of the flow velocity meter mounting rod 1 is arranged on the upper bearing 9 and the lower bearing 10 in a penetrating way.
The reversing mechanism 7 comprises a reversing motor 71, a driving gear 72 and a transmission gear 73, wherein the transmission gear 73 is arranged at the lower end of the flow meter mounting rod 1, a connecting support 42 is arranged at one side position corresponding to the flow meter mounting rod 1 and is used for mounting an assembling concave position 421 of the reversing motor 71, the reversing motor 71 is fixed on the assembling concave position 421, and the driving gear 72 is arranged on a driving shaft of the reversing motor 71 and is meshed with the transmission gear 73.
In operation, the flow rate meter is mounted on the flow rate meter mounting rod 1, 180-degree rotation of the flow rate meter is completed through driving of the reversing motor 71, up-down overturning of the flow rate meter is completed through driving of the overturning motor 61, and lifting of the flow rate meter is completed through driving of the double-extension-shaft motor 51. By correspondingly controlling the reversing motor 71, the overturning motor 61 and the double-extension-shaft motor 51 in positive and negative rotation, the 180-degree rotation, overturning and lifting movement of the flow meter can be correspondingly controlled, the automatic verification in the verification process of the flow meter is realized, the labor force is reduced, and the verification efficiency is improved.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way. As described in the above embodiments of the present invention, other devices and verification methods using the same or similar structures and methods are within the scope of the present invention.
Claims (5)
1. The flow velocity meter calibrating device is characterized by comprising a flow velocity meter mounting rod, a vertical frame, a sliding seat, a turnover support, a manual-automatic lifting driving mechanism, a turnover driving mechanism and a reversing mechanism, wherein the sliding seat is movably arranged on the vertical frame through a sliding rail; the reversing mechanism is arranged on the overturning bracket and can drive the flow rate meter mounting rod to rotate; the turnover support comprises an upper transverse frame, a connecting support and two vertical frames, wherein the upper ends of the two vertical frames are symmetrically connected with the two ends of the upper transverse frame, and the connecting support is arranged at the lower end of one vertical frame; the turnover driving mechanism comprises a turnover motor and a worm gear reducer, the worm gear reducer is fixed on the sliding seat, one end of an output shaft of the worm gear reducer is fixed on the connecting support, and the other end of the output shaft is fixed at the lower end of the other vertical frame; the bearing assembly comprises an upper bearing and a lower bearing, the lower bearing is arranged on the connecting support, the upper bearing is arranged on the upper transverse frame and is aligned with the lower bearing, and the lower part of the flow velocity meter mounting rod is arranged on the upper bearing and the lower bearing in a penetrating way.
2. The flowmeter verification device according to claim 1, wherein the manual-automatic lifting driving mechanism comprises a double-shaft motor, a hand wheel, a ball screw and a nut matched with the ball screw, wherein the ball screw is arranged on the front surface of the vertical frame through a bearing, the double-shaft motor is vertically arranged on the top of the vertical frame, and the lower end of a driving shaft of the double-shaft motor is connected with the upper end of the ball screw; the nut is arranged on the sliding seat and is matched with the ball screw, and the hand wheel is arranged at the upper end of the driving shaft of the double-extension-shaft motor.
3. The apparatus according to claim 1, wherein the reversing mechanism comprises a reversing motor, a driving gear and a transmission gear, the transmission gear is disposed at a lower end of the flow meter mounting rod, the reversing motor is disposed on the connection support corresponding to one side of the flow meter mounting rod, and the driving gear is disposed on a driving shaft of the reversing motor and is meshed with the transmission gear.
4. The verification method of the flow meter verification device is characterized by comprising the following steps of:
(1) A turnover driving mechanism is arranged for driving the turnover bracket to perform upward or downward turnover actions;
(2) A manual-automatic lifting driving mechanism is arranged for manually or electrically adjusting the lifting action of the overturning bracket;
(3) Setting a flow rate meter mounting rod for mounting the flow rate meter;
(4) The mounting rod of the flow velocity meter is arranged on the overturning bracket through the bearing assembly, and the overturning bracket can overturn and lift at any time;
(5) A reversing mechanism is arranged on the turnover bracket and used for controlling the rotation of the installation rod of the flow velocity meter so that the flow velocity meter can rotate 180 degrees or-180 degrees;
(6) The turnover support is driven by the turnover driving mechanism to turn downwards, so that the flow velocity meter on the flow velocity meter mounting rod stretches into water; at the moment, the water inlet depth of the flow velocity meter is controlled by the manual-automatic lifting driving mechanism, and then the flow velocity meter can rotate 180 degrees or-180 degrees through the reversing of the reversing mechanism according to the round-trip direction of the verification vehicle, so that the flow velocity meter can be detected in the round-trip process of the verification vehicle, and the verification purpose is realized; the turnover support comprises an upper transverse frame, a connecting support and two vertical frames, wherein the upper ends of the two vertical frames are symmetrically connected with the two ends of the upper transverse frame, and the connecting support is arranged at the lower end of one vertical frame; the turnover driving mechanism comprises a turnover motor and a worm gear reducer, the worm gear reducer is fixed on the sliding seat, one end of an output shaft of the worm gear reducer is fixed on the connecting support, and the other end of the output shaft is fixed at the lower end of the other vertical frame; the bearing assembly comprises an upper bearing and a lower bearing, the lower bearing is arranged on the connecting support, the upper bearing is arranged on the upper transverse frame and is aligned with the lower bearing, and the lower part of the flow velocity meter mounting rod is arranged on the upper bearing and the lower bearing in a penetrating way; the reversing mechanism comprises a reversing motor, a driving gear and a transmission gear, wherein the transmission gear is arranged at the lower end of the installation rod of the flow velocity meter, one side position of the reversing motor, corresponding to the installation rod of the flow velocity meter, is arranged on the connecting support, and the driving gear is arranged on a driving shaft of the reversing motor and is matched with the transmission gear.
5. The method for calibrating a flow meter calibrating apparatus according to claim 4, wherein the manual-automatic lifting driving mechanism comprises a double-shaft motor, a hand wheel, a ball screw and a nut matched with the ball screw, the ball screw is arranged on the front surface of the vertical frame through a bearing, the double-shaft motor is vertically arranged on the top of the vertical frame, and the lower end of a driving shaft of the double-shaft motor is connected with the upper end of the ball screw; the nut is arranged on the sliding seat and is matched with the ball screw, and the hand wheel is arranged at the upper end of the driving shaft of the double-extension-shaft motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367379.8A CN108362912B (en) | 2018-04-23 | 2018-04-23 | Flow velocity meter calibrating device and calibrating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810367379.8A CN108362912B (en) | 2018-04-23 | 2018-04-23 | Flow velocity meter calibrating device and calibrating method thereof |
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| Publication Number | Publication Date |
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| CN108362912A CN108362912A (en) | 2018-08-03 |
| CN108362912B true CN108362912B (en) | 2024-04-02 |
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| CN201810367379.8A Active CN108362912B (en) | 2018-04-23 | 2018-04-23 | Flow velocity meter calibrating device and calibrating method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111059416A (en) * | 2019-11-27 | 2020-04-24 | 潍坊市水文局(潍坊市水土保持监测站) | Unconventional instrument carrying system of flow velocity calibrating device |
| CN114460330A (en) * | 2021-11-23 | 2022-05-10 | 山东省水文中心 | Velocity meter verification equipment |
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