CN215573268U - Ultrasonic water meter calibration table based on instantaneous flow method - Google Patents
Ultrasonic water meter calibration table based on instantaneous flow method Download PDFInfo
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- CN215573268U CN215573268U CN202123250735.4U CN202123250735U CN215573268U CN 215573268 U CN215573268 U CN 215573268U CN 202123250735 U CN202123250735 U CN 202123250735U CN 215573268 U CN215573268 U CN 215573268U
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Abstract
The utility model discloses an ultrasonic water meter calibration table based on an instantaneous flow method, and belongs to the technical field of water meters. Including the flow produce the subassembly, the water tank, the meter rack, the flow produces the subassembly and includes at least a set of, every group includes the hydraulic cylinder of two vertical settings, the lead screw of a vertical setting, servo motor with screw connection, the piston rod of two hydraulic cylinders is connected with a cross arm respectively, the cross arm passes through screw and screw connection, be equipped with at least a set of meter mounting structure on the meter rack, every group meter mounting structure includes a plurality of table supports that set up in order, table support both ends can be connected and form the fluid passage with the tube coupling at water gauge both ends, the fluid input of the hydraulic cylinder of flow production subassembly passes through pipeline and water tank intercommunication, the fluid output of hydraulic cylinder passes through the pipeline and is connected with the input of the meter mounting structure on the meter rack, the output of the meter mounting structure on the meter rack passes through the pipeline and is connected with the water tank. The utility model can improve the detection precision and the detection efficiency of the ultrasonic water meter.
Description
Technical Field
The utility model relates to an ultrasonic water meter calibration stand, in particular to an ultrasonic water meter calibration stand adopting an instantaneous flow method, and belongs to the technical field of metering instruments.
Background
At present, the precision requirement on the flow meter is higher and higher, so the precision and the efficiency of the flow calibrating device are also higher and higher. The ultrasonic water meter is used as the development direction of the future water meter and is applied more and more widely at present. The traditional water meter calibrating device adopts mass method or volume method principle more, stop through controlling opening of water pump, measure such as the aperture of valve is adjusted out different flow, this kind of calibrating device can't produce accurate stable instantaneous flow fast, can't satisfy ultrasonic water meter verification demand, and traditional water meter calibrating device, verification efficiency is lower, can't satisfy water meter batch production demand, ultrasonic water meter producer generally satisfies large-scale production demand through increasing traditional water meter calibrating device quantity, this not only needs a large amount of equipment fund input, the factory building input, still need more production workman and maintenance workman, bring great burden for the enterprise.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the ultrasonic water meter calibration stand for the instantaneous flow method, which can improve the calibration precision and the calibration efficiency.
The utility model is realized by the following technical scheme: an ultrasonic water meter calibration table based on an instantaneous flow method is characterized in that: the flow generating assembly comprises at least one group, each group comprises two hydraulic cylinders vertically arranged on a support, a lead screw vertically arranged on the support and a servo motor connected with the lead screw, piston rods of the two hydraulic cylinders are respectively connected with a movable cross arm, the cross arm is connected with the lead screw through a screw nut, the servo motor is installed on the support, at least one group of meter installing structures are arranged on the meter rack, each group of meter installing structures comprises a plurality of meter supports which are sequentially arranged, two ends of each meter support can be connected with pipelines at two ends of a water meter to form a fluid passage, fluid input ends of the hydraulic cylinders of the flow generating assembly are communicated with the water tank through pipelines, and fluid output ends of the hydraulic cylinders are connected with input ends of the meter installing structures on the meter rack through pipelines, the output end of the meter mounting structure on the meter rack is connected with the water tank through a pipeline.
In the utility model, the hydraulic cylinder in the flow generating assembly has the characteristics of high precision, good piecewise volume linearity, good consistency and the like, and can generate accurate instantaneous flow through the control of the servo motor, so that the detection by an instantaneous flow method becomes possible. When the ultrasonic water meter detection device works, ultrasonic water meters to be detected are sequentially arranged between meter supports of the meter installation structure, and the water meters and the meter supports are mutually connected in a sealing manner to form a fluid passage. The servo motor drives the hydraulic cylinder piston of the flow generation assembly to push water to flow through the meter mounting structure provided with the ultrasonic water meter to be measured at an accurate instantaneous flow, and the theoretical flow value is compared with the actual read flow value of the water meter to judge whether the ultrasonic water meter is qualified. The fluid flowing out of the output end of the meter mounting structure is returned to the tank.
Further, to facilitate the generation of a wide flow range, the flow generating assembly includes three sets.
Further, in order to facilitate the installation of the meter, the meter installation structure further comprises two guide rods which are arranged in parallel, and two ends of the meter support are movably arranged on the guide rods in a penetrating mode.
Furthermore, in order to improve the detection efficiency, the meter rack is provided with two sets of meter mounting structures. Two sets of meter mounting structure can alternate use, can improve detection efficiency.
Furthermore, in order to meet the requirements of meter calibration, meter checking and research and development of the ultrasonic water meter for rapid modeling, a heater is arranged in the water tank. The water in the water tank can be temperature controlled by the heater.
Furthermore, in order to meet the requirements of meter calibration, meter checking and rapid modeling research and development of the ultrasonic water meter, a refrigerating device is also arranged to be connected with the water tank. The temperature of the water in the water tank can be controlled by the refrigerating device.
The utility model has the beneficial effects that: the ultrasonic water meter detection device is simple in structure, and can generate accurate instantaneous flow by adopting the hydraulic cylinder, so that the detection by an instantaneous flow method becomes possible, the detection precision of the ultrasonic water meter can be improved, the water passing volume is saved, and the detection efficiency can be greatly improved; the utility model has wide flow generation range and high precision, and the expansion uncertainty (flow generation accuracy) of the device is less than 0.2%; the method has high verification efficiency, the surface verification efficiency is more than 800 per 8 hours and is 3-5 times of that of the conventional mass method; the occupied area is small, the number of input personnel is small, and the requirement of batch production of the ultrasonic water meters can be met.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic side view of FIG. 1;
FIG. 4 is a schematic perspective view of the present invention;
FIG. 5 is a schematic perspective view of a flow generating assembly of the present invention;
FIG. 6 is a schematic front view of a flow generating assembly of the present invention;
FIG. 7 is a schematic top view of a flow generating assembly of the present invention;
FIG. 8 is a side schematic view of a flow generating assembly of the present invention;
FIG. 9 is a schematic cross-sectional view of a hydraulic cylinder of the present invention;
in the figure, 1, a flow generating assembly, 101, a servo motor, 102, a bracket, 103, a cross arm, 104, a lead screw, 105, a guide rod, 106, a hydraulic cylinder, 107, a mounting plate, 2, a water tank, 3, a meter rack, 301, a meter support, 302, a guide rod, 4, an electric control cabinet, 5, a refrigerating device, 6, a heater, 7, a fluid pipeline at an input end, 8 and a fluid pipeline at an output end.
Detailed Description
The utility model will now be further illustrated by way of non-limiting examples in conjunction with the accompanying drawings:
as shown in the attached drawing, the ultrasonic water meter calibration table adopting the instantaneous flow method comprises a flow generation assembly 1, a water tank 2 and a meter table frame 3. The flow generating assembly 1 includes at least one set, and in this embodiment, three sets of flow generating assemblies are provided, and all the three sets of flow generating assemblies are provided on the bracket 102, and the three sets of flow generating assemblies may adopt the same flow or different flows according to the detection requirement. Each set of flow generating assembly 1 comprises two hydraulic cylinders 106 vertically arranged on the bracket 102, a lead screw 104 vertically arranged on the bracket 102, and a servo motor 101 connected with the lead screw 104. The hydraulic cylinder 106 is a finish grinding hydraulic cylinder, which is a prior art, and the hydraulic cylinder 106 is vertically installed on the installation plate 107 of the bracket 102 with its piston rod facing upward. The screw 104 is rotatably installed between the top plate of the bracket 102 and the mounting plate 107, the servo motor 101 is installed below the mounting plate 107, and a motor shaft of the servo motor 101 is connected to the screw 104. The screw 104 is connected to the cross arm 103 via a nut, piston rods of two hydraulic cylinders 106 are connected to the cross arm 103, respectively, and both ends of the cross arm 103 are guided by two guide rods 105 provided on the bracket 102. The meter rack 3 is provided with at least one set of meter mounting structure, and two sets of meter mounting structures are arranged in the embodiment. Every group table meter mounting structure holds in the palm 301 including a plurality of tables that set up in order, the both ends that the table held in the palm 301 are the tube sheet, be between the tube sheet at both ends with tube sheet sealing connection's pipeline, the tube sheet tip be provided with can with the pipeline connection's at ultrasonic water meter both ends connection structure, the centre gripping is held in the palm between 301 adjacent two tables when ultrasonic water meter installation, the pipeline at ultrasonic water meter both ends respectively with the tube sheet sealing connection who holds in the palm 301 tip in the table, table holds in the palm 301 and is connected with the water gauge and forms fluid passage. In order to facilitate meter installation, two guide rods 302 arranged in parallel are arranged on the meter rack 3 in the embodiment, the tube plates at two ends of the meter holder 301 are movably arranged on the guide rods 302 in a penetrating way, and the meter holder 301 can slide along the guide rods 302. The fluid input end of the hydraulic cylinder 106 of the flow generating assembly is communicated with the water tank 2 through a pipeline, the fluid output ends of the hydraulic cylinders 106 of the three groups of flow generating assemblies are connected with the fluid pipeline 7 of the input end, the fluid pipeline 7 of the input end is connected with the input end of the meter mounting structure on the meter rack 3, and the output end of the meter mounting structure on the meter rack 3 is connected with the water tank 2 through the fluid pipeline 8 of the output end.
In order to meet the requirements of calibrating, checking and researching and developing the ultrasonic water meter for rapid modeling, the embodiment is also provided with the heater 6 in the water tank 2, the water in the water tank 2 can be heated through the heater 6, the refrigerating device 5 is also arranged to be connected with the water tank 2, and the water in the water tank 2 can be cooled through the refrigerating device 5.
When the ultrasonic water meter detection device works, ultrasonic water meters to be detected are sequentially arranged between meter supports 301 of a meter installation structure, and the meter supports 301 are connected with the ultrasonic water meters in a sealing mode to form a fluid passage. According to the flow required by detection, starting the related flow generating assembly 1, driving a piston of a hydraulic cylinder 106 through a servo motor 101 of the flow generating assembly 1, pushing water to flow through a meter mounting structure provided with the ultrasonic water meter to be detected at an accurate instantaneous flow, and comparing a theoretical flow value with an actual read flow value of the water meter to judge whether the ultrasonic water meter is qualified. The fluid flowing out of the output end of the meter mounting structure is returned to the water tank 2.
The method can produce the flow of 0.002 m/h-20 m/h, is accurate and stable in flow, high in detection precision, simple and rapid in flow adjustment, can meet the detection requirement of the ultrasonic water meter, and can realize detection of multiple flow points of the ultrasonic water meter. The utility model has simple operation and high detection efficiency.
Other parts in this embodiment are the prior art, and are not described herein again.
Claims (6)
1. An ultrasonic water meter calibration table based on an instantaneous flow method is characterized in that: the flow rate generating assembly (1) comprises at least one group, each group comprises two hydraulic cylinders (106) vertically arranged on a support (102), a lead screw (104) vertically arranged on the support (102) and a servo motor (101) connected with the lead screw (104), piston rods of the two hydraulic cylinders (106) are respectively connected with a movable cross arm (103), the cross arm (103) is connected with the lead screw (104) through a nut, the servo motor (101) is installed on the support (102), at least one group of meter installing structures are arranged on the meter rack (3), each group of meter installing structures comprises a plurality of meter supports (301) which are arranged in sequence, two ends of each meter support (301) can be connected with pipelines at two ends of a water meter and form a fluid passage, the flow rate generating assembly is characterized in that a fluid input end of a hydraulic cylinder (106) of the flow rate generating assembly is communicated with the water tank (2) through a pipeline, a fluid output end of the hydraulic cylinder (106) is connected with an input end of a meter mounting structure on the meter rack (3) through a pipeline, and an output end of the meter mounting structure on the meter rack (3) is connected with the water tank (2) through a pipeline.
2. The ultrasonic water meter calibration stand by the instantaneous flow method as set forth in claim 1, wherein: the flow generating assembly (1) comprises three groups.
3. The ultrasonic water meter calibration stand by the instantaneous flow method as set forth in claim 1, wherein: the meter mounting structure further comprises two guide rods (302) which are arranged in parallel, and two ends of the meter support (301) are movably arranged on the guide rods (302) in a penetrating mode.
4. The ultrasonic water meter calibration stand by the instantaneous flow method as set forth in claim 3, wherein: the meter rack (3) is provided with two sets of meter mounting structures.
5. The ultrasonic water meter calibration stand by the instantaneous flow method as set forth in claim 1, wherein: a heater (6) is arranged in the water tank (2).
6. The ultrasonic water meter calibration stand by the instantaneous flow method according to claim 1, 2, 3, 4 or 5, which is characterized in that: a refrigerating device (5) is also arranged to be connected with the water tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123250735.4U CN215573268U (en) | 2021-12-23 | 2021-12-23 | Ultrasonic water meter calibration table based on instantaneous flow method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123250735.4U CN215573268U (en) | 2021-12-23 | 2021-12-23 | Ultrasonic water meter calibration table based on instantaneous flow method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215573268U true CN215573268U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123250735.4U Active CN215573268U (en) | 2021-12-23 | 2021-12-23 | Ultrasonic water meter calibration table based on instantaneous flow method |
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| CN (1) | CN215573268U (en) |
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2021
- 2021-12-23 CN CN202123250735.4U patent/CN215573268U/en active Active
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