CN110095170A - A kind of compulsory verification method of water supply water meter - Google Patents
A kind of compulsory verification method of water supply water meter Download PDFInfo
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- CN110095170A CN110095170A CN201910411716.3A CN201910411716A CN110095170A CN 110095170 A CN110095170 A CN 110095170A CN 201910411716 A CN201910411716 A CN 201910411716A CN 110095170 A CN110095170 A CN 110095170A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012795 verification Methods 0.000 title claims abstract description 16
- 239000008400 supply water Substances 0.000 title claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 61
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 14
- 238000007689 inspection Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 230000007812 deficiency Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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Abstract
The invention discloses a kind of compulsory verification methods of water supply water meter, are related to water meter calibration technical field, include the following steps: S1, and by water pump composite to be detected into signal piping, water flow is inputted into signal piping, excludes the air in signal piping；S2, in the state that full water is filled in signal piping, occlusion detection pipeline records data；Static Water is connected to by S3 with signal piping, and conduction detection pipeline, Static Water passes through signal piping under its Gravitative Loads；S4 records the volume of Static Water reduction, and it is compared with numerical difference of the water meter to be detected before and after Static Water input, and water meter calibration precision is high if equal.There is a problem of detection accuracy deficiency under the extremely low state of flow rate of water flow for the prior art, Static Water is input in signal piping using self weight in the present invention, with the reduction of Static Water, the input pressure of Static Water can be also gradually reduced, the detection work of water meter under a variety of flow velocitys is simulated, water meter is accurately examined and determine in realization.
Description
Technical field
The present invention relates to water meter calibration technical fields, more specifically, it relates to a kind of compulsory verification side of water supply water meter
Method.
Background technique
Apparatus for calibrating water meter on the one hand can be China each department water as the unified standard with transmitting of flux unit magnitude
The transmission of quantity value of table is accurate, unification provides important guarantee, and on the other hand can provide for work such as business accounting, trade settlements can
By foundation.It is can also being studied well using apparatus for calibrating water meter, can when formulating national (enterprise) standard of water meter and vertification regulation
The testing method that leans on simultaneously carries out various test data verifyings.In addition, carrying out type evaluation and inspection to various types water meter
When fixed, calibration, apparatus for calibrating water meter is the criterion of water meter measurement performance criteria, and providing for quality supervision department and measurement technology mechanism can
The technical basis leaned on.
It is the Chinese patent of CN206695875U for existing water meter calibration mode, such as patent publication No., it discloses
A kind of apparatus for calibrating water meter, the water tank connect including successively pipe, water pump, vacuum tank, compression cylinder, inspection table pipeline and container, and set up
Capture mechanism above inspection table pipeline is detected water pump composite on inspection table pipeline, and capture mechanism includes two and is oppositely arranged on
The guide rail of inspection table pipeline two sides along at least one slidable bracket of guide rail and is movably mounted on each bracket
Camera, compression cylinder includes cylinder body, be slideably contained in the intracorporal piston of cylinder and is oppositely arranged on the of side face of piston ring
One connecting rod and the second connecting rod, first connecting rod connect with the second connecting rod, and cylinder body is run through in one end of first connecting rod
One end and connect with vacuum tank pipe, one end of the second connecting rod through cylinder body the other end and connect with an end pipe of inspection table pipeline.
In above-mentioned patent, water flow is conveyed into detection pipeline using the cooperation of water pump, compression cylinder and vacuum tank, was being detected
Cheng Zhong, the water flow detected in pipeline are in a kind of high speed and stable state always.But water meter is in actual use, certain customers' benefit
With water meter under the extremely low state of flow rate of water flow, the disadvantage of detection accuracy deficiency uses water resource steathily, causes greatly to pass through to water-supply plant
Ji loss.
Summary of the invention
There is a problem of detection accuracy deficiency under the extremely low state of flow rate of water flow for the prior art, the purpose of the present invention is mention
For a kind of compulsory verification method of water supply water meter, has the advantages that high measurement accuracy.
To achieve the above object, the present invention provides the following technical scheme that
A kind of compulsory verification method of water supply water meter, includes the following steps:
S1 inputs water flow into signal piping by water pump composite to be detected into signal piping, excludes the sky in signal piping
Gas；
S2, in the state that full water is filled in signal piping, occlusion detection pipeline records the data on water meter to be detected at this time；
Static Water is connected to by S3 with signal piping, and conduction detection pipeline, Static Water passes through signal piping under its Gravitative Loads；
S4 records the volume of Static Water reduction, and it is compared with numerical difference of the water meter to be detected before and after Static Water input
Compared with water meter calibration precision is high if equal.
Through the above technical solutions, Static Water is input in signal piping under its own gravity, with Static Water
The decline of liquid level, the pressure of Static Water bottom can also reduce, and then cause the input pressure of Static Water to be gradually reduced, simulated with this
The detection work of water meter under a variety of flow velocitys, the circulation detected with water meter finally by the reduction amount of comparative static water whether phase
Deng water meter calibration precision is high if equal, and the present invention can be achieved more accurately to examine and determine water meter, avoids water meter from using with this
When, the problem of user steals water resource using water flow fluctuation or low flow velocity.
Further, step S1 includes the following steps:
S11 recycles input water using water pump into signal piping；
S12 checks the air capacity that contains in signal piping using ultrasonic detection device, judges whether is air in signal piping
It drains.
Through the above technical solutions, first, the waste of water resource can be reduced in the way of circulation water delivery；Second, utilizing
Air that may be present in ultrasonic examination signal piping, detection are accurate and reliable.
Further, step S3 includes the following steps:
S31 detects the temperature and environment temperature of Static Water；
Static Water is connected to by S32 when the temperature of Static Water and environment temperature difference when within 3 DEG C with signal piping.
Through the above technical solutions, ensure that the temperature of Static Water and room temperature are close before detection, thus reduce in detection process,
Since the variation of water temperature influences the precision of water meter calibration.
Further, Static Water is contained in water tank, reads the liquid level graduated scale of water tank side wall, obtains Static Water in water tank
The volume of reduction.
Through the above technical solutions, reading liquid level graduated scale facilitates the reduction amount for obtaining Static Water in water tank.
Further, the bottom of water tank is connected to signal piping, is provided with diaphragm seal on the liquid level of Static Water.
Through the above technical solutions, after the Static Water in water tank is finished, diaphragm seal is settled down to the bottom of water tank, and by water tank
Hole of the bottom for connection is blocked, and is realized with this and only the Static Water in water tank is input in signal piping, convenient accurate control
The input quantity of Static Water；Further, since setting diaphragm seal, diaphragm seal are swum on the liquid level of Static Water, convenient for reading on water tank
Liquid level graduated scale, obtain the reduction amount of Static Water.
Further, after signal piping conducting, compare signal piping output water and input the volume of water, judge signal piping
With the presence or absence of leakage problem.
Through the above technical solutions, checking that signal piping whether there is the problem of leakproofness deficiency, avoid due to detection pipe
There are water leakages for road, lead to the problem of verification result inaccuracy.
Further, in step S3, water meter top rotary table turnning circle is detected, and the circle number by rotating calculates what stream passed through
Water flow, the code table data in water-meter reading, judges whether the code table of water meter works normally.
Through the above technical solutions, the volume by water meter can be calculated using the circle number that turntable rotates, then will calculate
Volume compared with the code table data on water meter, if code table data much smaller than calculate volume, illustrate water meter code table rotation
Structure is faulty.
Further, water meter top rotary table side circumference array offers slot, irradiates disk edge using laser range finder, leads to
The fluctuation number for crossing measurement data calculates the circle number of turntable rotation.
Through the above technical solutions, assisting detecting using laser range finder, convenient for the circle number of accurate statistics turntable rotation.
Compared with prior art, the beneficial effects of the present invention are:
(1) as static water level declines, Static Water is input to the pressure in signal piping and is gradually lowered, simulated with this variety of
The detection work of water meter under flow velocity, to realize that water meter is more accurate, more comprehensively examines and determine；
(2) further, by the way that diaphragm seal is arranged on the static water surface, after the water in water tank is drained, diaphragm seal conforms to water
The pipeline between water tank and signal piping is blocked in bottom portion, and the water between water tank and signal piping in pipeline can not be input to
In signal piping, convenient for accurately controlling the input quantity of Static Water, further, since diaphragm seal is arranged on liquid level, convenient for reading water
Liquid level scale in case；
(3) further, by recording turntable turnning circle, the circulation of water flow in water meter is calculated, the code table of water meter is checked, has
At the failure for excluding to detect water meter.
Detailed description of the invention
Fig. 1 is flow diagram of the invention.
Specific embodiment
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, below with reference to examples and drawings pair
The present invention is described in further detail, but embodiments of the present invention are not limited only to this.
A kind of compulsory verification method of water supply water meter, as shown in Figure 1, including the following steps:
Water meter to be detected is connected in signal piping by S1, is extracted the water in pond using water pump, is input to signal piping
Interior, the water in signal piping is finally flow back into pond, realizes circulation water delivery, be will test in pipeline and is filled completely by circulation water delivery
Water excludes the air in signal piping, improves detection accuracy, while also can be reduced the waste of water resource；
The air capacity contained in signal piping is checked using ultrasonic detection device, judges whether the air in signal piping is arranged
To the greatest extent, it is ensured that detection accuracy.
S2 fills full water in pipeline to be detected, first closes water pump, then will test the both ends closure of pipeline, makes detection pipe
In water-filled state is filled out in road, the data on water meter to be detected at this time are recorded；
S3, Static Water are contained in water tank, and the height of water tank is higher than the height of signal piping, detects the temperature and ring of Static Water
Border temperature；
When the difference of the temperature of Static Water and environment temperature when within 3 DEG C, Static Water is connected to signal piping；
It will test pipeline to be connected far from one end of water tank, Static Water passes through signal piping under its Gravitative Loads, while being arranged and existing
Water meter record stream on signal piping passes through the water flow in signal piping；
After signal piping conducting, collect the water that flows out from signal piping, the reduction amount of comparative static water with from signal piping
Whether the water of middle outflow is identical, and only in the same circumstances, signal piping is only there is no leakage problem, avoids detection pipe
Route the detection error caused by leakage；
Most fast turntable side circumference array is rotated on water meter and offers slot, and turntable must be arranged on water meter in the prior art
Component, turntable per revolution correspond to the water that certain volume is flowed through in water meter, choose and rotate the most fast calculated numerical value of turntable
It is more accurate, it is rotated at most fast disk edge using laser range finder irradiation, the edge of turntable intermittent can block laser
The light beam of rangefinder is calculated to cause the quantitative fluctuation of laser range finder measurement data by the fluctuation number of measurement data
The circle number of turntable rotation, recycles the circle number of acquisition to calculate the water flow that stream passes through, and the code table data on water-meter reading judge water
Whether the code table of table works normally.
S4, water tank side wall are wholely set transparent graduated scale, convenient for obtaining the volume of Static Water reduction in water tank, record
The volume of Static Water reduction, and it is compared with the numerical difference of water meter to be detected detection front and back, the numerical value that water meter detects
With the practical reduction amount of Static Water nearer it is to the calibration accuracy of water meter is higher；
The bottom of water tank is connected to signal piping, and floating has diaphragm seal on the liquid level of Static Water, and diaphragm seal uses plastic tab system
At density ratio water is light, floats on the liquid level of Static Water, and after the Static Water in water tank is completely exhausted out, diaphragm seal is attached to water
The bottom of case, drainage position is blocked, thus be input to the water between water tank and signal piping in pipeline can not in signal piping,
The water of static water body accumulated amount in water tank can only be at most input in signal piping, be input to signal piping convenient for accurately controlling
In static water flow, realize high-precision water meter calibration.
In summary:
When the present invention is implemented, as static water level declines, Static Water is input to the pressure in signal piping and is gradually lowered, with
This simulates the detection work of water meter under a variety of flow velocitys, to realize that water meter is more accurate, more comprehensively examines and determine；By in static state
Diaphragm seal is set on the water surface, and after the water in water tank is drained, diaphragm seal conforms to water tank bottom, will be between water tank and signal piping
Pipeline block, the water between water tank and signal piping in pipeline can not be input in signal piping, static convenient for accurate control
The input quantity of water, further, since diaphragm seal is arranged on liquid level, convenient for reading the liquid level scale in water tank；By recording turntable
Turnning circle calculates the circulation of water flow in water meter, checks the code table of water meter, is conducive at the failure for excluding to detect water meter.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of compulsory verification method of water supply water meter, which comprises the steps of:
S1 inputs water flow into signal piping by water pump composite to be detected into signal piping, excludes the sky in signal piping
Gas；
S2, in the state that full water is filled in signal piping, occlusion detection pipeline records the data on water meter to be detected at this time；
Static Water is connected to by S3 with signal piping, and conduction detection pipeline, Static Water passes through signal piping under its Gravitative Loads；
S4 records the volume of Static Water reduction, and it is compared with numerical difference of the water meter to be detected before and after Static Water input
Compared with water meter calibration precision is high if equal.
2. a kind of compulsory verification method of water supply water meter according to claim 1, which is characterized in that step S1 includes as follows
Step:
S11 recycles input water using water pump into signal piping；
S12 checks the air capacity that contains in signal piping using ultrasonic detection device, judges whether is air in signal piping
It drains.
3. a kind of compulsory verification method of water supply water meter according to claim 1, which is characterized in that step S3 includes as follows
Step:
S31 detects the temperature and environment temperature of Static Water；
Static Water is connected to by S32 when the temperature of Static Water and environment temperature difference when within 3 DEG C with signal piping.
4. a kind of compulsory verification method of water supply water meter according to claim 1, which is characterized in that Static Water is contained in water
In case, the liquid level graduated scale of water tank side wall is read, obtains the volume of Static Water reduction in water tank.
5. a kind of compulsory verification method of water supply water meter according to claim 4, which is characterized in that the bottom of water tank and inspection
Pipeline connection is surveyed, is provided with diaphragm seal on the liquid level of Static Water.
6. a kind of compulsory verification method of water supply water meter according to claim 1, which is characterized in that signal piping conducting
Afterwards, compare signal piping output water and input the volume of water, judge signal piping with the presence or absence of leakage problem.
7. a kind of compulsory verification method of water supply water meter according to claim 1, which is characterized in that in step S3, detection
Water meter top rotary table turnning circle, and the circle number by rotating calculates the water flow that stream passes through, the code table data in water-meter reading are sentenced
Whether the code table of table of cutting off the water supply works normally.
8. a kind of compulsory verification method of water supply water meter according to claim 7, which is characterized in that water meter top rotary table side
Circumference array offers slot, irradiates disk edge using laser range finder, calculates turntable by the fluctuation number of measurement data and turns
Dynamic circle number.
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| CN201910411716.3A CN110095170A (en) | 2019-05-16 | 2019-05-16 | A kind of compulsory verification method of water supply water meter |
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Cited By (2)
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| CN112729489A (en) * | 2020-12-31 | 2021-04-30 | 四川技高禹圣仪表有限公司 | Detection method and system applied to abnormal fluctuation of water meter |
| CN113447098A (en) * | 2021-05-08 | 2021-09-28 | 上海市供水水表强制检定站有限公司 | Accurate calibration equipment of water supply meter |
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Application publication date: 20190806 |
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