CN107525569A - Apparatus for calibrating water meter and water meter calibration - Google Patents
Apparatus for calibrating water meter and water meter calibration Download PDFInfo
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- CN107525569A CN107525569A CN201710863479.5A CN201710863479A CN107525569A CN 107525569 A CN107525569 A CN 107525569A CN 201710863479 A CN201710863479 A CN 201710863479A CN 107525569 A CN107525569 A CN 107525569A
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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
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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Abstract
The invention provides a kind of apparatus for calibrating water meter and water meter calibration, belongs to instrument calibration field.A kind of apparatus for calibrating water meter, including water supply installation, the first water meter sense channel, the second water meter sense channel, water meter water inlet detecting device and water meter water outlet detection means.First water meter sense channel can install M water meter, second water meter sense channel can install N number of water meter, M and N is the integer more than or equal to 1, be additionally provided with the cutout detection pipe for detecting water meter cutout function, measure the metering inflow of water meter by contrasting water meter water inlet detecting device and water meter water outlet detection means measure water meter actual water yield can just obtain characterize each water meter integrated flux whether the correct and whether normal verification result of cutout function.Water meter calibration is used to control apparatus for calibrating water meter to complete calibrating.Its multiple water meter sense channel for being provided with cutout detection pipe shares water supply installation, and cutout Function detection can be carried out to water meter while water supply installation kinetic energy efficiency is improved.
Description
Technical field
The present invention relates to instrument calibration field, in particular to a kind of apparatus for calibrating water meter and water meter calibration.
Background technology
Water meter is the measurement instrument that measuring instrument and meter is compulsory verification, directly affects the standard of water-supplying unit's metering clearing
True property and consumer's interests, apparatus for calibrating water meter are the calibration operation for completing measurement instrument and ensure that water supply industry measures
Accurately and reliably.The new-type water meter that present intellectual water meter, IC-card water meter etc. have the functions such as charging, automatic shutoff has become industry
Water meter is often used with resident, existing water meter calibration equipment can not carry out quick, easy-operating calibrating to water meter automatic shutoff function.
The content of the invention
It is an object of the invention to provide a kind of apparatus for calibrating water meter and water meter calibration, and it can utilize a set of water supply
Device is supplied water to multiple water meter sense channels to carry out water meter calibration, while each water meter sense channel can install multiple water meters,
Solve the problems, such as that water meter calibration efficiency is low, water supply installation utilization rate is low.
What embodiments of the invention were realized in：
A kind of apparatus for calibrating water meter, it includes water supply installation, the first water meter sense channel, the second water meter sense channel, water
Table water inlet detecting device and water meter water outlet detection means.First water meter sense channel and the second water meter sense channel fill with supplying water
Connection is put, M water meter can be installed on the first water meter sense channel, N number of water meter can be installed on the second water meter sense channel, M and N are equal
For the integer more than or equal to 1.Water meter water inlet detecting device is used for the metering for detecting each water meter in M water meter and/or N number of water meter
Inflow, water meter water outlet detection means are used for the actual water yield for detecting each water meter in M water meter and/or N number of water meter.Pass through
Contrasting the metering inflow of each water meter and actual water yield can obtain and characterize whether each water meter integrated flux is correctly examined
Determine result.
In optional embodiment of the present invention, above-mentioned water system includes water tank, water pump and vacuum tank, water pump and water tank and
Vacuum tank connects.Water tank is used to store calibrating water, and water pump is used to carry out the water in water tank pressurized delivered, and vacuum tank is used to put down
Water and pressure in weighing apparatus pipeline.
In optional embodiment of the present invention, above-mentioned first water meter sense channel includes the first water meter bearer path, first
Flow controller, the second water meter sense channel include the second water meter bearer path, second flow controller.The carrying of first water meter is logical
Road is connected with vacuum tank, and first flow controller is connected with the first water meter bearer path.Second water meter bearer path with it is first-class
Amount controller is connected, and second flow controller is connected with the second water meter bearer path.First water meter bearer path and the second water meter
Bearer path is used to controlling that measurement water to be used to control by, first flow controller and second flow controller and conversion passes through
Water-carrying capacity size is used in measurement.
In optional embodiment of the present invention, above-mentioned first flow controller and second flow controller are intelligent flow control
Valve processed.
In optional embodiment of the present invention, above-mentioned first water meter bearer path includes the first water intaking valve, the first water meter is pacified
Tubulature and the first voltage-withstand test portion, it is pressure-resistant that the second water meter bearer path includes the second water intaking valve, the second water pump composite pipe and second
Test department.First water meter bearer path one end is connected with vacuum tank, and the other end is connected with the first voltage-withstand test portion, the first water intaking valve
It is arranged between the first water pump composite pipe and vacuum tank, first water pump composite pipe one end is connected with first flow controller, another
End is connected with the second voltage-withstand test portion, and the second water intaking valve is arranged between first flow controller and the first water pump composite pipe.The
One flow controller is connected with the first voltage-withstand test portion.One end of second flow controller is connected with the second voltage-withstand test portion, separately
One end is connected with water meter water outlet detection means.Wherein, the first water pump composite pipe and the second water pump composite pipe are used to install the water
Table and pass through measurement water.
In optional embodiment of the present invention, above-mentioned first water pump composite pipe includes the first direct current connecting tube, the first cutout
Detection pipe and M the first water pump composite points being arranged in the first direct current connecting tube.Second water pump composite pipe includes the second direct current
Connecting tube, the second cutout detection pipe and N the second water pump composite points being arranged in the second direct current connecting tube.First direct current connecting tube
And second direct current connecting tube be used to installing water meter and for measurement water by, the first direct current connecting tube by individual first water pump composites of M
Point is divided into M+1 parts, and first cutout detection pipe one end is connected with the Part II of the first direct current connecting tube, the other end and first resistance to
Test department connection is pressed, and is connected one by one with other M parts of the first direct current connecting tube, the first cutout detection pipe is in every two connections
Between be provided with the first cutout test valve.Second direct current connecting tube is divided into N+1 parts by N number of second water pump composite point, the
Two cutout detection pipe one end are connected with the Part II of the second direct current connecting tube, the other end and the connection of the second voltage-withstand test portion, and
It is connected one by one with other N number of parts of second connecting tube, the second cutout detection pipe is provided between each two junction
Second cutout test valve.Wherein, the first cutout detection pipe and the second cutout detection pipe are used for the cutout function of detecting water meter.
In optional embodiment of the present invention, above-mentioned first voltage-withstand test portion includes the first pressure-testing valve, the first hydraulic test pump, the
One electro connecting pressure gauge and the first relief valve.Second voltage-withstand test portion includes the second pressure-testing valve, the second hydraulic test pump, the second electric contact
Pressure gauge and the second relief valve.First voltage-withstand test portion is arranged between the first water pump composite pipe and first flow controller, the
Two voltage-withstand test portions are arranged between the second water pump composite pipe and second flow controller.Wherein, the first pressure-testing valve and the second examination
Pressure valve is used to blind off a line in voltage-withstand test, when the first hydraulic test pump and the second hydraulic test pump are used for the pipeline closing in voltage-withstand test
Hydraulic pressure is adjusted, the first electric contact pressure and the second electro connecting pressure gauge are respectively used to detection and obtain the first water pump composite pipe and second
The pressure parameter of measurement water in water pump composite pipe.
In optional embodiment of the present invention, above-mentioned water meter water outlet detection means includes water entering section, actual amount of water data obtain
Take device and outlet part.Water entering section is connected with first flow controller and second flow controller, actual amount of water data obtainer root
Setting is matched with water entering section according to metering system.Outlet part can be opened and closed, and its one end is connected with water entering section, the other end and water tank
Connection.
In optional embodiment of the present invention, above-mentioned actual amount of water data obtainer is intelligent electromagnetic flowmeter.
A kind of water meter calibration, it is characterised in that wrap and state apparatus for calibrating water meter and control system, system is used to control
Apparatus for calibrating water meter processed completes water meter calibration, and control system is connected with apparatus for calibrating water meter.
The beneficial effect of the embodiment of the present invention is：
The embodiment of the present invention provides a kind of apparatus for calibrating water meter and water meter calibration, when carrying out water meter calibration, water meter quilt
On the first water meter sense channel and/or the second water meter sense channel, start apparatus for calibrating water meter after control valve, store
Measurement in water tank is transported to water meter water inlet detecting device with water through water pump, flows through to be provided with the water meter of water meter first and carry and leads to
Behind road and/or the second water meter bearer path, water meter water inlet detecting device obtains the metering water inlet of water meter under different flow control
Amount, then detect current and enter the actual water yield that water meter water outlet detection means obtains water meter, pass through comparing calculation different flow
In the case of measure inflow and actual water yield and obtain characterizing whether each water meter integrated flux is correctly examined and determine under different flow
As a result.After water meter integrated flux detection is carried out, carried by being separately positioned on the first water meter bearer path and the second water meter
The cutout function of the first cutout detection pipe and the second cutout detection pipe to water meter on passage is examined and determine.Water meter calibration can
Monitor and control apparatus for calibrating water meter to complete water meter calibration.The multiple water meter detections for being provided with cutout detection pipe of the embodiment of the present invention
Passage shares water supply installation, while ensure that water supply installation kinetic energy efficiency, apparatus for calibrating water meter is realized to water
The rapid calibrating of table cutout function.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is apparatus for calibrating water meter structural representation provided in an embodiment of the present invention；
Fig. 2 is the structural representation of the first water meter sense channel provided in an embodiment of the present invention；
Fig. 3 is the structural representation of the first water meter sense channel provided in an embodiment of the present invention using spinner flowmeter；
Fig. 4 is the structural representation of the second water meter sense channel provided in an embodiment of the present invention；
Icon：1- apparatus for calibrating water meter；2- water supply installations；22- water tanks；24- water pumps；26- vacuum tanks；The water meters of 3- first are examined
Survey passage；31- first supports；32- the first water meter bearer path；The water intaking valves of 321- first；322- the first water pump composite pipes；323-
First voltage-withstand test portion；324- the first direct current connecting tubes；The cutout detection pipes of 325- first；The cutout test valves of 326- first；327-
First hydraulic test pump；The electro connecting pressure gauges of 328- first；The relief valves of 329- first；33- first flow controllers；The water meters of 4- second are examined
Survey passage；41- second supports；42- the second water meter bearer path；The water intaking valves of 421- second；422- the second water pump composite pipes；423-
Second voltage-withstand test portion；424- the second direct current connecting tubes；The cutout test valves of 426- second；The hydraulic test pumps of 427- second；428- second
Electro connecting pressure gauge；The relief valves of 429- second；43- second flow controllers；5- water meter water inlet detecting devices；The water outlet of 6- water meters is examined
Survey device；The total electric cabinets of 71-；The electric cabinets of 72- first；The electric cabinets of 73- second；74- frequency converters.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that referring to
Show or imply relative importance.
In addition, the term such as term " level ", " vertical " is not offered as requiring part abswolute level or pendency, but can be slightly
Low dip.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", is not to represent that the structure must be complete
It is complete horizontal, but can be slightly tilted.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals, can be connected by pipeline.For one of ordinary skill in the art
Speech, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Other features and advantages of the present invention will illustrate in subsequent specification, also, partly become from specification
It is clear that or understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Fig. 1 is refer to, Fig. 1 is the structural representation for the apparatus for calibrating water meter that the present embodiment provides.
The present embodiment provides a kind of apparatus for calibrating water meter 1, including water supply installation 2, the first water meter sense channel 3, the second water
Table sense channel 4, water meter water inlet detecting device 5 and water meter water outlet detection means 6.Wherein the water meter of water supply installation 2 and first detects
Passage 3 is connected, and the first water meter sense channel 3 is connected with the second water meter sense channel 4 and water meter water outlet detection means 6 respectively, the
Two water meter sense channels 4 are connected with water meter water outlet detection means 6, and it is logical that water meter water inlet detecting device 5 is arranged on the detection of the first water meter
The correspondence position of water meter on the water meter sense channel 4 of road 3 and second.
Water supply installation 2 includes water tank 22, water pump 24 and vacuum tank 26.The both ends of water pump 24 connect with water tank 22 and water pump 24 respectively
Connect.Water tank 22 is stainless steel water tank, for storing measurement water, is provided with delivery port and water inlet, delivery port connects with water pump 24
Connect, water inlet is used to reclaim measurement water.Water pump 24 can be the centrifugal pump often sold on the market, for conveying measurement water.Surely
Pressure tank 26 is used in closed-loop water system, plays equilibrium water amount and pressure, avoids the frequent starting of water pump 24.
Fig. 2 is refer to, Fig. 2 is the structural representation for the first water meter sense channel that the present embodiment provides.
First water meter sense channel 3 includes first support 31, the first water meter bearer path 32 and first flow controller 33.
First water meter bearer path 32 and its first flow controller 33 of connection are arranged in first support 31.
First water meter bearer path 32 includes the first water intaking valve 321, the first water pump composite pipe 322 and the first voltage-withstand test portion
323.The both ends of first water pump composite pipe 322 are connected with the first water intaking valve 321 and the first voltage-withstand test portion 323 respectively, and first is pressure-resistant
Test department 323 is connected with first flow controller 33.
First water intaking valve 321 plays switching function in the duct, can be off the normally-off valve such as valve, ball valve.As in addition
A kind of embodiment, check-valves can be also set between the first water intaking valve 321 and the first water pump composite pipe 322 to prevent measurement from using
Water flows back.
First water pump composite pipe 322 includes the cutout cutout of detection pipe 325 and first of the first direct current connecting tube 324, first and surveyed
Try valve 326.First direct current connecting tube 324 and the first cutout detection pipe 325 connect, and water pump composite point is arranged on the connection of the first direct current
On pipe 324.
The first direct current connecting tube 324 is the common metal water pipes such as stainless steel tube, galvanized pipe or copper pipe in the present embodiment, is used
In installation water meter to be measured and by measurement water, M+1 parts are divided into by M water pump composite point.The of first direct current connecting tube 324
A part be in it is common be horizontally disposed with water pipe identical " one " font, respectively with the first water intaking valve 321 and the first voltage-withstand test portion
323 connections.Other each several parts of first direct current connecting tube 324 are substantially T-shaped, disconnected with first by the vertical connecting tube in lower end
Stream detection pipe 325 connects.
Further, M water pump composite point in the first direct current connecting tube 324 can install the different water meter of bore.
First cutout detection pipe 325 is also metallic water pipe, for leading to when water meter does not install full and in water meter cutout detection
Measurement water is crossed, is made in apparatus for calibrating water meter 1 on first water meter bearer path 32 and the second water meter bearer path 42 without full water
The first direct current of table connecting tube 324 can also carry out water meter calibration when being in disconnection state.First cutout detection pipe 325 connects in each two
The first cutout test valve 326 is provided with horizontal pipe between pipe, the first cutout test valve 326 is shut-off valve.
First voltage-withstand test portion 323 includes the first hydraulic test pump 327, the first electro connecting pressure gauge 328 and the first relief valve
329.First hydraulic test pump 327 is arranged between the first electro connecting pressure gauge 328 and the first relief valve 329, and the first hydraulic test pump 327 can
To be motor test pump or hand held, electric hydraulic test pump common on the market, for connecting in water meter voltage-withstand test to the first direct current
Measurement in adapter 324 is pressurizeed with water.First electro connecting pressure gauge 328 is used to first is measured and controlled in water meter voltage-withstand test
The pressure of measurement water in direct current connecting tube 324.Bourdon tube of first electro connecting pressure gauge 328 in measuring system is measuring
With producing corresponding elastic deformation under effect of water pressure and be exaggerated, by the instruction on fixed gear by by measured value on scale
Indicate, at the same time, when it is in contact the instantaneous of (dynamic circuit breaker or dynamic circuit connector) with the contact (upper limit or lower limit) on setting pointer,
Cause the circuit in control system to be turned off or connect, voltage-withstand test is completed to reach control apparatus for calibrating water meter 1.First is resistance to
The shunt conduit of pressure release, the first relief valve 329 are provided with the connecting pipe of pressure test department 323 and first flow controller 33
It is arranged in above-mentioned pressure release shunt conduit.
According to《National metrological verification regulations JJG 162-2009》In relevant regulations, tackle water meter during water meter calibration
In minimum discharge Q1, boundary flow Q2, conventional flow Q3Under the conditions of examined and determine respectively.Wherein, minimum discharge Q1To require water meter
Meet the minimum discharge of the limits of error, boundary flow Q2It is between conventional flow Q3With minimum discharge Q1Between and water meter
Range of flow is divided into the flow in high area and low area, commonly uses flow Q3For the maximum stream flow under nominal working conditions.So in water meter
Need to carry out detection control with the water-carrying capacity of water to measurement in the first direct current connecting tube 324 in verification process, met most with providing
Low discharge Q1, boundary flow Q2, conventional flow Q3The detection environment of condition.In order to solve this problem, in the present embodiment,
One flow controller 33 selects intelligent flow control valve, and its one end is connected with the first voltage-withstand test portion 323, and the other end is divided into two
The lateral being connected respectively with the second water meter sense channel 4 and water meter water outlet detection means 6.Intelligent flow control valve is a kind of
New model terminal control instrument, it adjusts fluid flow and pressure in pipeline according to control electric signal by adjusting the aperture of valve
Power.Because people propose higher and higher requirement to the precision and dynamic characteristic of control system, from YE and control
System processed connection, directly receives electric control signal, can obtain the fastest response time, realize control it is also more reasonable, conveniently, pass through
Ji.In the present embodiment can be to being provided with water meter to be measured as first flow controller 33 from intelligent flow control valve
The flow of measurement water realizes detection in real time and control in first direct current connecting tube 324, and in addition intelligent flow control valve has
There are the autoprotection and system protection function of height, i.e., can be certainly when some parts break down or other problems occurs in system
Dynamic take emergency measures to avoid accident.Except intelligent flow control valve, first flow controller 33 can also be rotor stream
Gauge.
Fig. 3 is refer to, Fig. 3 is the structural representation using the first water meter sense channel of spinner flowmeter.
Spinner flowmeter is also known as suspended body flowmeter, and the positions of the rotatable parts that throughput test is located in direct current pipeline pushes away
The device through inflow-rate of water turbine is calculated, is one kind of variable cross section-type flowmeter, it has, and simple in construction, directly perceived, the pressure loss is small, maintenance side
Just the features such as, spinner flowmeter is necessarily mounted on the pipeline section of capwise during use, and fluid media (medium) is from bottom to up by turning
Subflow gauge.In the present embodiment if using spinner flowmeter, it is necessary to corresponding minimum discharge Q1, boundary flow Q2, conventional stream
Measure Q3Three spinner flowmeters of condition setting and its corresponding pipeline and valve.
Fig. 4 is refer to, Fig. 4 is the structural representation for the second water meter sense channel that the present embodiment provides.
Second water meter sense channel 4 includes second support 41, the second water meter bearer path 42 and second flow controller 43.
Second water meter bearer path 42 and second flow controller 43 are arranged in second support 41, the second 42 liang of water meter bearer path
End is connected with the first water meter bearer path 32 and second flow controller 43 respectively.
Second water meter bearer path 42 includes the second water intaking valve 421, the second water pump composite pipe 422 and the second voltage-withstand test portion
423.The structure of second water meter bearer path 42 is identical, each several part connected mode and the corresponding intrument of the first water meter bearer path 32
Connected mode is identical.
Second flow controller 43 can be the volume control devices such as intelligent flow control valve, spinner flowmeter, its one end
It is connected with the second water meter bearer path 42, the other end is connected with water meter water outlet detection means 6.
Above the first direct current connecting tube 324 of first support 31 and the second direct current connecting tube 424 of second support 41
Correspondence position is provided with water meter water inlet detecting device 5.Water meter water inlet detecting device 5 is corresponding water meter quantity in the present embodiment
Several colour TV cameras, for shooting indicator of water gauge image to obtain indicator of water gauge data, detection indicator of water gauge and real-time traffic,
There is good antijamming capability while accurate acquisition metering inflow data.
In the present embodiment, water meter water outlet detection means 6 is used to detecting the actual water yield of water meter, and its detection method can be with
It is the flux cumulating method corresponding to volumetric method, weight method or intelligent electromagnetic flowmeter.Water meter water outlet detection means 6 is intelligent electromagnetic
Flowmeter, its one end pipeline are divided into two branch roads and are connected respectively with the first water meter sense channel 3 and the second water meter sense channel 4,
The other end is connected with the water inlet of water tank 22.Intelligent electromagnetic flowmeter is made up of sensor and converter two parts.It is to be based on
Faraday's electromagnetic induction law work, be a kind of survey for measuring the volume flow that electrical conductivity is more than 5 μ S/cm conducting liquids
The Ferraris instrument of conducting medium volume flow is measured, its advantage is that crushing is minimum, and measurable flow amount scope is big.Intelligent electromagnetic flowmeter
The reality of the volume, i.e. water meter of the measurement water flowed through in certain time is calculated with the flow velocity and time of water according to measurement in pipeline
Border water yield.
Alternatively embodiment, water meter water outlet detection means 6 can use tank corresponding with weight method, temperature
Spend sensor and electronic scale.The water in tank weigh by electronic scale and determines the standard weights of water, according to temperature
The water temperature that sensor measures is converted into the i.e. actual water yield of normal volume to the standard weights of water.In addition, in order to ensure detection essence
Degree, the bottom of water butt use funnel-shaped design, make water discharge rapid, thorough.The water inlet pipe mouth of pipe of bucket is designed using gondola water faucet shape,
Dispersed water (flow) direction, prevent current from, because Action of Gravity Field impacts water butt, causing data fluctuations.
Further, power initiation key, power off key and jerk are additionally provided with first support 31 and second support 41
Key.
The present embodiment additionally provides the water meter calibration for controlling apparatus for calibrating water meter 1.Water meter calibration bag
Include total electric cabinet 71, the first electric cabinet 72, the second electric cabinet 73, frequency converter 74, computer and corresponding control software.Total electric cabinet
71st, the first electric cabinet 72 and frequency converter 74 are arranged in first support 31, and the second electric cabinet 73 is arranged in second support 41.Always
The electric cabinet 72 of electric cabinet 71 and first, the second electric cabinet 73, frequency converter 74, computer, vacuum tank 26, water meter water inlet detecting device
5 and water meter water outlet detection means 6 connect.First electric cabinet 72 and the first water intaking valve 321, first cutout test valve 326, first try
Press pump 327, the first electro connecting pressure gauge 328, the first relief valve 329 and first flow controller 33 connect.Second electric cabinet 73
Stopped with the second water intaking valve 421, second and test valve 426, the second hydraulic test pump 427, the second electro connecting pressure gauge 428, the second pressure release
Valve 429 and second flow controller 43 connect.It is respectively provided with above-mentioned total electric cabinet 71, the first electric cabinet 72 and the second electric cabinet 73
There is a programmable logic controller (PLC), the operable computer being connected with programmable logic controller (PLC) of water meter calibration operating personnel is to control
Apparatus for calibrating water meter 1 processed, above computer show metering inflow, actual water yield, error, water temperature, room temperature to operating personnel
Etc. data and frequency converter start and stop key, water pump start and stop key, main pipeline threshold switch, pressure testing threshold switch, hydraulic test pump start and stop key, Q1Flow
Point switch, Q2Flow point switch, Q3The key mappings such as flow point switch.
It should be noted that the valve in the present embodiment is electric control valve, so that water meter calibration is realized to water meter
Verification process automatically controls.
Specifically, the present embodiment provide apparatus for calibrating water meter 1 and water meter calibration when performing water meter calibration program,
First by water pump composite to be measured in the first direct current connecting tube 324 and/or the second direct current connecting tube 424, start water meter calibration dress
1 is put, opens frequency converter 74, the first water meter sense channel 3, the second water meter sense channel 4 and water meter water inlet detecting device 5, water meter
The detection of water inlet detecting device 5 obtains the head pointer reading of water meter.The first carry out voltage-withstand test to water meter, the measurement in water tank 22
It is delivered to water by water pump 24 in vacuum tank 26, the first water intaking valve 321 by opening after voltage stabilizing is handled flows into the first water
Table bearer path 32, now the first relief valve 329 and first flow controller 33 are in closed mode, it is noted that not
The first cutout installed between the water pump composite point of water meter tests valve 326 in opened condition, remaining first cutout test valve 326
In closed mode, the first hydraulic test pump 327 suppress until reaching the first electro connecting pressure gauge 328 to the measurement in pipeline with water
Pressure is set, and detection water meter whether there is leak damage, completes water meter voltage-withstand test.Then carry out whether just water meter characterizes integrated flux
True calibrating, open first flow controller 33 and second flow controller 43 and adjust to corresponding minimum discharge Q1Corresponding stream
Value, measurement water enter the second water meter bearer path 42, the weight of the second voltage-withstand test portion 423 after first flow controller 33
The step of multiple first voltage-withstand test portion 323, carries out voltage-withstand test to the water meter in the second direct current connecting tube 424, afterwards measurement water
By second flow controller 43 and water meter water outlet detection means 6 out of water inlet reflow tank 22.During to the stipulated time, first
Water intaking valve 321 is closed, and after the water in pipeline all flows through water meter water outlet detection means 6, is obtained by the detection of water meter water inlet detecting device 5
The termination total indicator reading of water meter is obtained, the difference for terminating total indicator reading and head pointer reading is to measure inflow, is gone out by water meter
The detection of water detection means 6 obtains actual water yield, and sign just can be obtained often by measuring inflow and the actual water yield
Individual water meter is in minimum discharge Q1Under the conditions of the whether correct verification result of integrated flux, then by first flow controller 33 and second
Flow controller 43 is adjusted to boundary flow Q successively2, conventional flow Q3Corresponding flow value examined and determine according to above-mentioned steps, obtain
To each water meter of sign in boundary flow Q2, conventional flow Q3Under the conditions of the whether correct verification result of integrated flux, complete water meter
Flow verification.Cutout detection finally is carried out to water meter, is again turned on the first water intaking valve 321, makes measurement water in water meter calibration
The proper flow of device 1, first flow controller 33 and second flow controller 43 are adjusted to conventional flow Q3, the first direct current company
Disconnection state is brought to close to the water pump composite point of first flow controller 33 in adapter 324, by checking water meter water outlet detection dress
Put whether 6 datas on flows change the cutout Function detection for completing this water meter, correspond to other water meters in the first direct current connecting tube 324
And the second water meter in direct current connecting tube 424 repeats the cutout detection that above-mentioned cutout detecting step completes all water meters.Water meter is examined
Determine after device 1 completes all verification steps, open the first relief valve 329 and the second relief valve 429 complete to close after pressure release it is all
Valve, it is then turned off apparatus for calibrating water meter 1.It is worth noting that, control of the apparatus for calibrating water meter 1 in verification process to each valve
The operations such as the acquisition of system, the flow switch of flowmeter and data are carried out automatically under the control of water meter calibration, examine and determine people
The computer that member can operate equipped with control software and be connected with apparatus for calibrating water meter 1 manipulates to water meter calibration process.
In summary, the present invention provides a kind of apparatus for calibrating water meter and water meter calibration, when carrying out water meter calibration, water meter
It is installed on the first water meter sense channel and/or the second water meter sense channel, starts apparatus for calibrating water meter after control valve, deposit
The measurement stored up in water tank is transported to water meter water inlet detecting device with water through water pump, flows through and is provided with the carrying of the water meter of water meter first
After passage and/or the second water meter bearer path, the metering that water meter water inlet detecting device obtains water meter under different flow control is entered
Water, then detect current and enter the actual water yield that water meter water outlet detection means obtains water meter, pass through comparing calculation not cocurrent flow
Inflow is measured in the case of amount and actual water yield obtains characterizing whether each water meter integrated flux is correctly examined under different flow
Determine result.After water meter integrated flux detection is carried out, held by being separately positioned on the first water meter bearer path and the second water meter
The cutout function of the on passage first cutout detection pipe and the second cutout detection pipe to water meter is carried to examine and determine.Water meter calibration
It can monitor and control apparatus for calibrating water meter to complete water meter calibration.The multiple water meter inspections for being provided with cutout detection pipe of the embodiment of the present invention
Survey passage and share water supply installation, while ensure that the kinetic energy efficiency of water supply installation, apparatus for calibrating water meter is realized
Rapid calibrating to water meter cutout function.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. apparatus for calibrating water meter, it is characterised in that including：Water supply installation；The first water meter sense channel being connected with the water supply installation and the second water meter detection being connected with the water supply installation are logical Road, wherein, M water meter can be installed on the first water meter sense channel, N number of water can be installed on the second water meter sense channel Table, M and N are the integer more than or equal to 1；Water meter water inlet detecting device, the metering for detecting each water meter in the M water meter and/or N number of water meter are intake Amount；Water meter water outlet detection means, for detecting the actual water outlet of each water meter in the M water meter and/or N number of water meter Amount, wherein, it is every that sign can be obtained by the metering inflow of each water meter and the actual water yield of each water meter The individual whether correct verification result of water meter integrated flux.
- 2. apparatus for calibrating water meter according to claim 1, it is characterised in that the water system includes：Water tank；Water pump, it is connected with the water tank；Vacuum tank, it is connected with the water pump；The water tank is used to store measurement water, and the water pump is used to carry out pressurized delivered, the vacuum tank to the water in water tank For the water and pressure in equalizing main.
- 3. apparatus for calibrating water meter according to claim 2, it is characterised in that the first water meter sense channel includes first Water meter bearer path, first flow controller, the second water meter sense channel include the second water meter bearer path, second flow Controller；The first water meter bearer path is connected with the vacuum tank, the first flow controller and first water meter Bearer path connects；The second water meter bearer path is connected with the first flow controller, the second flow controller It is connected with the second water meter bearer path；Wherein, the first water meter bearer path and the second water meter bearer path be used to controlling the measurement water by, The first flow controller and the second flow controller are used to control and change by the measurement water-carrying capacity Size.
- 4. apparatus for calibrating water meter according to claim 3, it is characterised in that the first flow controller and described second Flow controller is intelligent flow control valve.
- 5. apparatus for calibrating water meter according to claim 3, it is characterised in that the first water meter bearer path includes first Water intaking valve, the first water pump composite pipe and the first voltage-withstand test portion；The second water meter bearer path includes the second water intaking valve, second Water pump composite pipe and the second voltage-withstand test portion；Described first water meter bearer path one end is connected with the vacuum tank, the other end with First voltage-withstand test portion connection, first water intaking valve be arranged at the first water pump composite pipe and the vacuum tank it Between；Described second water pump composite pipe one end is connected with the first flow controller, the other end and the second voltage-withstand test portion Connection, second water intaking valve are arranged between the first flow controller and the first water pump composite pipe；Described first Flow controller is connected with the first voltage-withstand test portion, and the other end is connected with the water meter water outlet detection means；Described second One end of flow controller is connected with the second voltage-withstand test portion, and the other end is connected with the water meter water outlet detection means；Wherein, the first water pump composite pipe and the second water pump composite pipe are used to install the water meter and used by measuring Water.
- 6. apparatus for calibrating water meter according to claim 5, it is characterised in that it is straight that the first water pump composite pipe includes first Stream connecting tube, the first cutout detection pipe and M water pump composite point being arranged in the first direct current connecting tube；Second water Table installing pipe includes the second direct current connecting tube, the second cutout detection pipe and the N number of water being arranged in the second direct current connecting tube Table mount point；The first direct current connecting tube and the second direct current connecting tube are used to install the water meter and for the measurement Water passes through；The first direct current connecting tube is divided into M+1 parts, the first cutout detection pipe one by the M water pump composite point End be connected with the Part II of the first direct current connecting tube, the other end connects with the first voltage-withstand test portion, and with it is described Other M parts of first direct current connecting tube are connected one by one, and the first cutout detection pipe is respectively provided between every two junction There is the first cutout to test valve；The second direct current connecting tube is divided into N+1 parts by N number of water pump composite point, and described second is disconnected Stream detection pipe one end is connected with the Part II of the second direct current connecting tube, and the other end and the second voltage-withstand test portion connect Connect, and be connected one by one with other N number of parts of the second connecting tube, the second cutout detection pipe is in each two junction Between be provided with the second cutout test valve；Wherein, the first cutout detection pipe and the second cutout detection pipe are used for the cutout function of detecting the water meter.
- 7. apparatus for calibrating water meter according to claim 5, it is characterised in that the first voltage-withstand test portion includes the first examination Pressure valve, the first hydraulic test pump, the first electro connecting pressure gauge and the first relief valve；The second voltage-withstand test portion includes the second pressure testing Valve, the second hydraulic test pump, the second electro connecting pressure gauge and the second relief valve；The first voltage-withstand test portion is arranged on first water Between table installing pipe and the first flow controller, the second voltage-withstand test portion be arranged on the second water pump composite pipe and Between the second flow controller；Wherein, first pressure-testing valve and second pressure-testing valve are used to blind off a line in voltage-withstand test, first pressure testing Pump and second hydraulic test pump are used to adjust hydraulic pressure when pipeline is closed in the voltage-withstand test, first electric contact pressure and Second electro connecting pressure gauge is respectively used to detection and obtained in the first water pump composite pipe and the second water pump composite pipe The pressure parameter of the measurement water.
- 8. apparatus for calibrating water meter according to claim 7, it is characterised in that the water meter water outlet detection means includes：Water entering section, it is connected with the first flow controller and the second flow controller；Actual amount of water data obtainer, setting is matched with the water entering section according to metering system；Outlet part, one end are connected with the water entering section, and the other end is connected with the water tank, and the outlet part can be opened, closed.
- 9. apparatus for calibrating water meter according to claim 8, it is characterised in that the actual amount of water data obtainer is intelligence Electromagnetic flowmeter.
- 10. a kind of water meter calibration, it is characterised in that including the apparatus for calibrating water meter described in claim 1-9 any one And control system, the control system are connected with the apparatus for calibrating water meter.
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| CN201710863479.5A CN107525569A (en) | 2017-09-21 | 2017-09-21 | Apparatus for calibrating water meter and water meter calibration |
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| CN201710863479.5A CN107525569A (en) | 2017-09-21 | 2017-09-21 | Apparatus for calibrating water meter and water meter calibration |
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