CN206479237U - A kind of water meter self-checking device - Google Patents

A kind of water meter self-checking device Download PDF

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Publication number
CN206479237U
CN206479237U CN201621221434.5U CN201621221434U CN206479237U CN 206479237 U CN206479237 U CN 206479237U CN 201621221434 U CN201621221434 U CN 201621221434U CN 206479237 U CN206479237 U CN 206479237U
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water
measured
water meter
stand
tank
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CN201621221434.5U
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刘军康
张子良
齐明辉
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Leimeng (ningbo) Ltd By Share Ltd
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Leimeng (ningbo) Ltd By Share Ltd
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Abstract

A kind of water meter self-checking device, including tank, stand, stand is respectively equipped with water supply mechanism and flow control device and weighing bucket provided with several water meters to be measured for being sequentially connected in series setting can be fixed on to the fixed mechanism on stand between the water inlet end and water side of tank and Water Meter group to be measured;Flow control device includes the 3rd hand-operated valve and flowmeter being arranged in series from bottom to top;The top of stand connects and read the water meter to be measured being attached thereto to corresponding with each water meter to be measured provided with many and fall into a trap the connecting line of water numerical value.The utility model is examined and determine it when can flow through water meter to be measured to the water of different flow, and calibration accuracy is high, can especially be examined and determine in low discharge, with preventing water leakage;Using the break-make of hand-operated valve control piper, the defect of magnetic valve easily short circuit when overcoming spilling water;Provided with temperature sensor and pressure sensor, water temperature and hydraulic pressure can be detected in real time, are reduced water temperature and the unstable influence to detecting stability of hydraulic pressure, are improved accuracy of detection.

Description

A kind of water meter self-checking device
Technical field
The utility model is related to water meter calibration technical field, more particularly to a kind of water meter self-checking device.
Background technology
Water meter be the effect that uses the direct Machine Movement Process or flow rate of water flow of removable wall volumetric measurement room to wing wheel with The flowmeter for the current volume for flowing through water supply pipe is calculated, is widely used in the industries such as running water, heating power, chemical industry.
National metrological verification regulations provide that nominal flow rate need to be carried out to water meter, divide by producing the enterprise or metrological service of water meter The error testing of three flow points such as boundary's flow, minimum discharge.The manual static start and stop volume comparison method used at present, examines and determine people Member needs manual three switchings water-carrying capacity, and four readings carry out standard measuring device liquid level gauge water levels by the registration of water gauge and three times and read Take, the various data of manual record simultaneously calculate error.The workload that such a calibrating mode is present is big, and efficiency is low, and precision is low, artificially Error is big, and numerous defects such as qualification result is not objective are apparent.
For such a situation, water meter self-checking device is arisen at the historic moment, but current water meter self-checking device is tied mostly Structure is complicated, and cost is higher, and does not take into full account the influence of water temperature, hydraulic pressure to detection accuracy.
Such as patent of invention CN105651361A discloses a kind of ultrasonic water meter automatic Regulation detection caliberating device and side Method, including ultrasonic water meter, weighing device and data handling system etc., the flow of data handling system collection ultrasonic water meter show Number and the obtained qualitative datas of weighing device, calculate the relative error numerical value of every ultrasonic water meter, according to flow registration with Error amount numerical fitting goes out relative error fitting function and is back to corresponding water meter, so as to correct different ultrasonic water meter room machines With the physical difference factor of electronics, the Systematic Errors caused by mounting process diversity factor.
Relative to artificial calibration method, the calibrating installation efficiency high, and verification result is more objective, but such a detection means Have the disadvantage that:1. the device is without flow control device, the flow for the water for flowing through water meter to be measured can not be carried out in calibrating Regulation switches;2. the water for flowing into water meter is previously stored in accumulator, as storage time is different, the temperature of water can be sent out Changing, the non-mounting temperature sensor of the device, it is impossible to confirm to water density tracking and automatic amendment, cause data handling system It is not accurate enough according to the water density that water temperature is selected, may not meet national metrological verification regulations to the water density of mass method will Ask;3. in addition, existing automatic calibrator uses the break-make in solenoid valve control water route mostly, if there are the feelings of pipeline spilling water Condition, will cause the binding post short circuit of magnetic valve, so as to influence whole verification process;4. water is by storage tank, weighing container, and Flow regime is constantly in the circulatory system of water meter line composition, it is impossible to accomplish power conservation requirement.
Utility model content
Technical problem to be solved in the utility model be for prior art present situation there is provided a kind of calibration accuracy it is high and The water meter self-checking device of flow switch can be carried out.
The utility model solve the technical scheme that is used of above-mentioned technical problem for:A kind of water meter self-checking device, bag Include tank, stand, the stand is provided with several water meters to be measured for being sequentially connected in series setting can be fixed on to the fixation on stand Provided with the confession that can input the water in tank in water meter to be measured between the water inlet end of mechanism, the tank and Water Meter group to be measured Water dispenser structure, the water side of the Water Meter group to be measured is connected to measure by the water of water meter to be measured by the first pipeline The weighing bucket of weight;It is parallel between the water side of first pipeline and Water Meter group to be measured multigroup to make current through treating Survey the certain flow control device of flow velocity of water meter, flow control device include the 3rd hand-operated valve being arranged in series from bottom to top and Flowmeter;The top of the stand connects and read the water meter to be measured being attached thereto provided with many to corresponding with each water meter to be measured The connecting line of water of falling into a trap numerical value.
Further improve, provided with temperature sensor and the between the water supply mechanism and the water inlet of Water Meter group to be measured One pressure sensor, detects water temperature and hydraulic pressure in real time, it is ensured that water temperature and hydraulic pressure reach requirement, excludes water temperature or pressure instability to inspection The influence of stability is surveyed, Detection results are improved.
Improve again, first manual valve is provided between the temperature sensor and first pressure sensor, so as to voluntarily control The break-make on tubulation road.
Improve again, the weighing bucket water side is connected with second pipe, the second pipe is provided with the second hand-operated valve, claims Water in weight bucket is back to tank to treat that next time uses by second pipe.
Improve again, the fixed mechanism include several can by two neighboring water meter to be measured be connected adapter and be located at respectively The top connection and lower contact at Water Meter group two ends to be measured, are provided with hydraulic pump, the hydraulic pump between the top connection and stand It is fixed on stand, top connection is fixed on hydraulic pump;The lower contact is fixed on stand, and internal and the first pipeline connects It is logical.Hydraulic pump is preferably plunger pump, and hydraulic pump is fixed on stand, and top connection is fixed on the piston rod of hydraulic pump, piston rod Top connection axial movement is driven when mobile, changes the distance between top connection and lower contact, so that water meter to be measured seals clamping.
Improve again, the water supply mechanism includes water pump and vacuum tank, the water inlet end of the water pump is connected with tank, its water outlet End is connected with vacuum tank, and the water in tank is pumped in vacuum tank by water pump;Passed in the vacuum tank provided with second pressure Sensor, can ensure that the hydraulic pressure inputted in water meter to be measured is steady by the caching of vacuum tank, so that pressure release is unstable steady to detecting Qualitatively influence, improve Detection results;The vacuum tank is connected by first manual valve with hydraulic pump.
Improve again, the 4th hand-operated valve is additionally provided between the vacuum tank and water pump, can not only be after measurement terminates by surely Water in pressure tank is back in tank, reduction detection energy consumption;Vacuum tank and tank formation partial circulating loop can also be made, make both it Between water temperature it is consistent, exclude the inconsistent influence to detecting stability of water temperature.
Compared with prior art, advantage of the present utility model:1., can be to different flow by setting flow control device Water it is examined and determine when flowing through water meter to be measured, calibration accuracy is high, can especially be examined and determine in low discharge, so as to make The water meter of assay approval can ensure that to drip and can also measure;2. water meter water inlet to be measured is provided with temperature sensor and first pressure Sensor, water temperature and hydraulic pressure can be detected in real time, are reduced water temperature and the unstable influence to detecting stability of hydraulic pressure, are improved detection essence Degree;3. using the break-make of hand-operated valve control piper, not only detect that energy consumption is low, moreover it is possible to which magnetic valve easily short circuit lacks when overcoming spilling water Fall into.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, being a preferred embodiment of water meter self-checking device of the present utility model.
The utility model discloses a kind of water meter self-checking device, including tank 1, stand 21, water supply mechanism, fixed machine Structure and flow control device 66 and weighing bucket 62.The device also includes PLC3 and the host computer 4 being connected with PLC3, host computer 4 with the system or program according to the corresponding exploitation of condition are respectively provided with PLC3, according to M-BUS between water meter 22 and host computer 4 to be measured Line both-way communication.
As shown in figure 1, stand 21, which is provided with, to be fixed on stand 21 by several water meters 22 to be measured for being sequentially connected in series setting On fixed mechanism, this preferred embodiment detects four water meters to be measured 22 for being sequentially connected in series simultaneously, of course, it is possible to as needed from Row determines the quantity of water meter 22 to be measured.Fixed mechanism for fixing water meter 22 to be measured includes three adapters 23, a top connection With a lower contact, all adapters 23 are coaxially disposed, and water meter 22 to be measured is embedded between two adjacent piece-root grafting pipes 23 during detection, on Joint and lower contact are located at the adapter component two ends that all adapters 23 are constituted respectively, and top connection and lower contact are same with adapter 23 Axle is set, and lower contact is fixed on stand 21.Hydraulic pump 24 is provided between top connection and stand 21.In the preferred embodiment, Hydraulic pump 24 is plunger pump, and hydraulic pump 24 is fixed on stand, and top connection is fixed on the piston rod of hydraulic pump 24, and piston rod is moved Top connection axial movement is driven when dynamic, changes the distance between top connection and lower contact, so that water meter to be measured 22 seals clamping.
In addition, the top of stand 21 connects to corresponding with each water meter 22 to be measured provided with many and reads treating of being attached thereto Water meter 22 is surveyed to fall into a trap the connecting line of water numerical value, thus with the both-way communication of host computer 4.
Water meter 22 to be measured can be inputted by the water in tank 1 by being provided between tank 1 and the water inlet end of the series connection group of water meter to be measured 22 Interior water supply mechanism, water supply mechanism includes water pump 51 and vacuum tank 52, and the water inlet end of water pump 51 is connected with tank 1, water side and Vacuum tank 52 is connected, and the water in tank 1 is pumped in vacuum tank 52 by water supply mechanism by water pump 51, and vacuum tank 52 is provided with real When monitor hydraulic pressure the second pressure sensor 53 being connected with PLC3, can ensure to input water meter to be measured by the caching of vacuum tank 52 Water hydraulic pressure in 22 is steady, so that the unstable influence to detecting stability of pressure release, improves Detection results.
In addition, in the preferred embodiment, the 4th hand-operated valve 54 being additionally provided between water pump 51 and vacuum tank 52, is on the one hand surveyed Water in vacuum tank 52 is back in tank 1 by amount after terminating, and reduces detection energy consumption;On the other hand, vacuum tank 52 and tank 1 The partial circulating loop of formation make it that water temperature between the two is consistent, excludes the inconsistent influence to detecting stability of water temperature.
In order to further ensure that water temperature and hydraulic pressure reach requirement, set on the pipeline of connection hydraulic pump 24 and water supply mechanism Have the temperature sensor 71 and first pressure sensor 72 being connected with PLC3, in real time detection water temperature and hydraulic pressure, exclude water temperature or Influence of the pressure instability to detection stability, improves Detection results;Meanwhile, in order to voluntarily control the break-make in water route, temperature First manual valve 73 is additionally provided between sensor 71 and first pressure sensor 72, water after first manual valve 73 is opened and just enters Hydraulic pump 24 promotes piston rod movement, so that the sealed clamping of water meter to be measured 22.
The water side of the series connection group of water meter 22 to be measured is connected to measure by water meter 22 to be measured by the first pipeline 63 The weighing bucket 62 of the weight of water, weighing bucket 62 is provided with electronic scale 61, and electronic scale 61 is connected with PLC3, the weight of water is fed back to PLC3, host computer 4 can reading data in real-time.The water side of weighing bucket 62 is connected with second pipe 64, and second pipe 64 is provided with the Two hand-operated valves 65, open after the second hand-operated valve 65, the water in weighing bucket 61 can be made to flow in tank 1, wait detection next time to make With.
First pipeline 63 connected with water meter 22 to be measured group water side between be parallel with it is multigroup to make current through water to be measured The certain flow control device 66 of the flow velocity of table 22, it is the 3rd manual that flow control device 66 includes being arranged in series from bottom to top Valve 67 and flowmeter 68, the 3rd hand-operated valve 67 can control the break-make of pipeline, and flowmeter 68 can carry out flow control and ensure current Flow velocity through water meter 22 to be measured.
This preferred embodiment is the three groups of flow control devices 66 distinguished by uninterrupted, every group of phase of flow control device 66 Mutually it is independently arranged and is connected with the first pipeline 63, during one flow point of test, only opens corresponding 3rd hand-operated valve 67, close Other two groups the 3rd hand-operated valves 67, you can examined and determine.
Water in the calibrating installation using this preferred embodiment, tank 1 is sucked up to vacuum tank 52 by water pump 51 It is interior, then successively through water meter 22 to be measured, flow control device 66 is back to tank into weighing bucket 62 finally by second pipe 64 In 1.When carrying out water meter calibration, need to carry out clamping, water flowing exhaust, the detection step such as gathered data and calculating successively.
A. all parts are adjusted after powered up first, whether the water temperature and hydraulic pressure value shown on inspection host computer 4 Reach the pressure value of design.
B. water meter 22 to be measured is sequentially connected in series by adapter 23 and be fixed on stand 21, opening hydraulic pump 24 pushes away piston rod Go out and then promote water meter 22 to be measured and the movement of adapter 23, so that being connected between the two ends of water meter to be measured 22 and the grade part of adapter 23 Place is in sealed clamping state, it is to avoid water seepage makes the characteristic of water meter 22 to be measured by error evaluation.
C. water pump 51 is then turned on, it is lasting into pipeline to supply water and then the gas in discharge line, typically first open big stream 3rd hand-operated valve 67 of amount flow control device 66 is discharged after a large amount of bubbles, then flow and low discharge flow control device in opening 66 the 3rd hand-operated valve 67 is untill bubble-free;The water of same water temperature flows through each pipeline simultaneously, realize each pipeline, container it is equal Temperature processing, the collection water temperature of temperature sensor 71 simultaneously feeds back to host computer 4, and the water temperature of the correspondence collection of host computer 4 is in databases The calculating density of water is searched in temperature-density meter of the water of storage.
D. the 3rd hand-operated valves 67 all on first manual valve 73 and flow control device 66 are first shut off after water flowing exhaust, The second hand-operated valve 65 closed after certain time on second pipe 64, measures the weight of weighing bucket 62 after electronic scale 61 is stable Amount, and feed back to host computer 4.
E. flow velocity regulation is then carried out to related valve within the corresponding time according to the calibration point of setting successively, on Position machine 4 constantly reads electronic scale data;And host computer 4 is based on M-BUS lines and each two-way communication of water meter 22 to be measured, directly reads stream The bulking value of water through each water meter 22 to be measured.
F. the error of each water meter 22 to be measured is calculated according to the formula of the memory storage of host computer 4 and shows calculating knot correspondingly Really, the internal memory of host computer 4 contains preset error value, when the error amount of each water meter 22 to be measured is more than preset error value, completes flow The detection of point.
G. after all flow point detections terminate, the second hand-operated valve 65 is opened, water is flowed into tank 1 out of weighing bucket 62, with Treat that next time uses.
Although describe in detail preferred embodiment of the present utility model, it is to be clearly understood that for this area Technical staff for, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.

Claims (7)

1. a kind of water meter self-checking device, including tank (1), stand (21), the stand (21) will be gone here and there successively provided with energy Several water meters (22) to be measured that connection is set are fixed on the fixed mechanism on stand (21), the tank (1) and water meter to be measured (22) it is described provided with the water supply mechanism that can input the water in tank (1) in water meter (22) to be measured between the water inlet end of series connection group The water side of water meter (22) series connection group to be measured is connected to measure the water by water meter to be measured (22) by the first pipeline (63) Weight weighing bucket (62);It is characterized in that:First pipeline (63) connected with water meter to be measured (22) group water side it Between be parallel with it is multigroup to make the certain flow control device (66) of flow velocity of the current through water meter to be measured (22), flow control device (66) the 3rd hand-operated valve (67) and flowmeter (68) being arranged in series from bottom to top are included;The top of the stand (21) is provided with more Root connects and read the water meter to be measured (22) being attached thereto to corresponding with each water meter (22) to be measured and fall into a trap the connection of water numerical value Line.
2. water meter self-checking device according to claim 1, it is characterised in that:The water supply mechanism and water meter to be measured (22) temperature sensor (71) and first pressure sensor (72) are provided between the water inlet of series connection group.
3. water meter self-checking device according to claim 2, it is characterised in that:The temperature sensor (71) and first First manual valve (73) is provided between pressure sensor (72).
4. water meter self-checking device according to claim 1, it is characterised in that:Weighing bucket (62) the water side connection There is second pipe (64), the second pipe (64) is provided with the second hand-operated valve (65).
5. water meter self-checking device according to claim 1, it is characterised in that:The fixed mechanism includes several energy It is located at the connected adapter (23) of two neighboring water meter (22) to be measured and respectively the top connection at water meter to be measured (22) series connection group two ends And lower contact, hydraulic pump (24) is provided between the top connection and stand (21), the hydraulic pump (24) is fixed on stand (21) On, top connection is fixed on hydraulic pump (24);The lower contact is fixed on stand (21), and internal and the first pipeline (63) is even It is logical.
6. water meter self-checking device according to claim 1, it is characterised in that:The water supply mechanism includes water pump (51) With vacuum tank (52), the water inlet end of the water pump (51) is connected with tank (1), and its water side is connected with vacuum tank (52), described Second pressure sensor (53) is provided with vacuum tank (52), the vacuum tank (52) passes through first manual valve (73) and hydraulic pump (24) connect.
7. water meter self-checking device according to claim 6, it is characterised in that:The vacuum tank (52) and water pump (51) Between be additionally provided with the 4th hand-operated valve (54).
CN201621221434.5U 2016-11-14 2016-11-14 A kind of water meter self-checking device Active CN206479237U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107525569A (en) * 2017-09-21 2017-12-29 常州轻工职业技术学院 Apparatus for calibrating water meter and water meter calibration
CN108007533A (en) * 2017-11-27 2018-05-08 安徽省锐凌计量器制造有限公司 A kind of detecting system of turbine flow transducer
CN109708840A (en) * 2019-01-07 2019-05-03 北京云梦智慧科技有限公司 Water flow test device based on the communication of Internet of Things water meter
CN111344542A (en) * 2019-06-28 2020-06-26 深圳市大疆创新科技有限公司 Flowmeter calibration system, method, device and storage medium
CN111537038A (en) * 2020-06-23 2020-08-14 刘晓鹏 Water level measuring and alarming device during flood prevention period

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107525569A (en) * 2017-09-21 2017-12-29 常州轻工职业技术学院 Apparatus for calibrating water meter and water meter calibration
CN108007533A (en) * 2017-11-27 2018-05-08 安徽省锐凌计量器制造有限公司 A kind of detecting system of turbine flow transducer
CN109708840A (en) * 2019-01-07 2019-05-03 北京云梦智慧科技有限公司 Water flow test device based on the communication of Internet of Things water meter
CN111344542A (en) * 2019-06-28 2020-06-26 深圳市大疆创新科技有限公司 Flowmeter calibration system, method, device and storage medium
CN111537038A (en) * 2020-06-23 2020-08-14 刘晓鹏 Water level measuring and alarming device during flood prevention period

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