CN207816421U - A kind of embedded mobile fine liquid flowrate calibrating device - Google Patents

Abstract

The utility model discloses a kind of embedded mobile fine liquid flowrate calibrating devices, the device is made of weigh capacitance device, the second weigh capacitance device, water knockout drum, commutator, timer and the first pipeline section of cart, first, first pipeline section input terminal connects the first detection branch or/and the second detection branch or/and third detection branch by universal contact, the tested flowmeter connected by meter-clamping apparatus in different detection branch, the demand of a variety of environment and plurality of liquid meter proof/calibration is realized, the utility model has the advantages that：Due to that can move, and operating platform liftable, it more disclosure satisfy that the needs of field calibration, expanded heavy caliber liquid flow standard device small range of flow detection capability, it disclosure satisfy that the demand of fluid flowmeter calibrating/calibration of of all kinds, various directions and type, installation easy to disassemble can select the use of weighing-appliance as needed, the working efficiency of calibrating/calibration is improved, timing mode is more accurate and reliable.

Description

A kind of embedded mobile fine liquid flowrate calibrating device

Technical field

The utility model is related to measurement and calibration FIELD OF THE INVENTIONThes, particularly relate to a kind of embedded mobile fine liquid stream Measure calibrating installation.

Background technology

Currently, domestic each province, measurement technology mechanism of city all focus on " heavy caliber, big flow " liquid runoff calibration device very much Development, and small flow, micro-flow meter quantifier elimination are then paid close attention to few so that the research and development of small flowmeter amount device It is more weak.The problem of being primarily present：

1) measurement range of domestic heavy caliber fluid flow device cannot meet the measurement need of small flow, tiny flow quantity It asks, the accuracy of small flow verification or calibration is relatively low；

2) domestic existing flow apparatus is mostly huge not easily shifted, and the detection mode taken mainly dismantles flowmeter Inspection afterwards cannot achieve field calibration, and for the enterprise with process control demand, it is related to manpower and materials except inspection Consumption outside, tear open table again inspection can influence enterprise production；

3) liquid flow standard device of metering system flow profession usually all accomplishes DN25mm bores or more, DN20mm mouthfuls Diameter and the use of DN15mm bores change form of tubes and are detected and (are not easy to be laid with fixed pipeline section since pipeline section bore is small), and DN10mm It is detected almost without ability below bore, other than being equipped with smaller electronic scale, the connection of pipeline section is also inconvenient, especially DN25mm bores flowmeter below mostly uses nipple, and pipeline section connection is flanged joint on device, when with flanged joint It can make flowmeter, pipeline section internal diameter decentraction, fluid stream is out-of-date so that flow field is distorted, and cannot correctly reflect the metering of flowmeter Performance causes the erroneous judgement of verification result；

4) it currently, when micro-flow meter is at the scene calibrated by the country, due to the limitation of space enrironment, mostly uses and weighs Method is carried out by pinching stopwatch and reading the mode of electronic scale, although the connection of this method and detaching pipelines, the carrying of standard device and peace More convenient, but the more difficult elimination of human error is set, the coarse and crude operation of human factor more introduces many uncontrollable errors.

Utility model content

The purpose of this utility model is to provide a kind of embedded fine liquid flow standard devices, to solve background skill It is topic in art.

To achieve the above object, the technical solution that the utility model is taken is：

A kind of embedded mobile fine liquid flowrate calibrating device, including cart, first weigh capacitance device, second weigh appearance Device, water knockout drum, commutator, timer and the first pipeline section, described first weighs capacitance device and the second capacitance device of weighing is respectively provided with On the cart, the timer is arranged on the commutator, the water knockout drum positioned at described first weigh capacitance device and Second top for weighing capacitance device, the commutator are located above the water knockout drum, the water knockout drum water inlet and the commutation Device output end connects, and two water outlets of the water knockout drum are weighed with described first respectively capacitance device and second weighs capacitance device phase Corresponding, the commutator input terminal is connect with the first pipeline section output end, and the first pipeline section input terminal is connected with the first inspection Survey branch or/and the second detection branch or/and third detection branch.

In said program, the cart includes telescoping handrail, supporting rack, supporting table and four rolling, described telescopic Handrail is arranged in described supporting table one end, and the four rolling symmetrically sets up the both sides in the supporting table bottom, the support separately Frame is arranged at the top of the supporting table and close to one end of the telescoping handrail, support frame as described above one end and the supporting table top Portion connects, and the other end is connect with first pipeline section；

Described first weigh capacitance device include the first weighing container, the first electronic scale and first liter of act bracket, described first Weighing container is movably arranged on first electronic scale, and first electronic scale is supported on the cart by the first fixed block Supporting table on, first liter of act bracket is located at the underface of first weighing container, and first liter of act bracket one End is connect with the supporting table of the cart, the bottom movable contact of the other end and first weighing container；

Described second weigh capacitance device include the second weighing container, the second electronic scale and second liter of act bracket, described second Weighing container is movably arranged on second electronic scale, and second electronic scale is supported on the cart by the second fixed block Supporting table on, second liter of act bracket is located at immediately below second weighing container, and second liter of act bracket and institute State the supporting table connection of cart, the bottom movable contact of the other end and second weighing container；

Drain valve there are one being also connected in the lower part of first weighing container and the second weighing container.

In said program, level meter, first electronics are additionally provided on first fixed block and the second fixed block Scale is flexibly connected with first fixed block, and second electronic scale is flexibly connected with second fixed block, and described first is solid Determine block and the second fixed block is fixedly connected with the supporting table.

In said program, the first capstan winch and the second capstan winch, first capstan winch are additionally provided in the side of the supporting table It is connect with first liter of act bracket, second capstan winch is connect with second liter of act bracket.

In said program, the first electromagnetic coil and the second electricity have also been connected respectively in the left and right ends of the commutator Magnetic coil has also been correspondingly connected with nozzle in the upper end of the commutator.

In said program, first detection branch include along the sequentially connected big flow standard set-up of water (flow) direction, First universal contact, the first meter-clamping apparatus, the tested flowmeter being horizontally mounted, the second meter-clamping apparatus and the second universal contact are described big Flow standard device is connect with the first universal contact, is connected by the second pipeline section between first universal contact and the first meter-clamping apparatus It connecing, replacing pipeline section by third pipeline section and first between second meter-clamping apparatus and the second universal contact connects, and the described 20000th Can connector connect with first pipeline section, the both ends of the tested flowmeter being horizontally mounted respectively with first meter-clamping apparatus and Second meter-clamping apparatus connects；

Second detection branch includes omnipotent to be connect along the sequentially connected big flow standard set-up of water (flow) direction, first Head, third universal contact, third meter-clamping apparatus, vertically arranged tested flowmeter, the 4th meter-clamping apparatus and the 4th universal contact, it is described Big flow standard set-up is connect with first universal contact, and first universal contact is replaced by the second pipeline section, second and managed Section and third pipeline section are connect with the third universal contact, and the third universal contact is connect with the third meter-clamping apparatus, described The both ends of vertically arranged tested flowmeter are connect with third meter-clamping apparatus and the 4th meter-clamping apparatus respectively, and the 4th meter-clamping apparatus passes through 4th universal contact is connect with first pipeline section；

The third detection branch includes along the sequentially connected live traffic sources of water (flow) direction, live flowmeter, the 5th Meter-clamping apparatus and the 5th universal contact, the scene traffic sources are connect with the live flowmeter, the live flowmeter with it is described 5th meter-clamping apparatus connects, and the 5th meter-clamping apparatus connect with the 5th universal contact, the 5th universal contact and described the Pipeline section connection is replaced by third pipeline section and first between one pipeline section, second exhaust is also associated on the 5th universal contact Pipe.

It is upper equipped with throttle valve and pressure gauge in second pipeline section in said program, on first universal contact It is also associated with downtake pipe.

In said program, the first branch and second are also associated between the third pipeline section and first pipeline section Road is additionally provided with first switch valve corresponding with the first branch and the second branch and second switch respectively on the third pipeline section Valve is additionally provided with third switch valve corresponding with the first branch and the second branch respectively and the 4th switch on first pipeline section Valve.

In said program, first universal contact, the second universal contact, third universal contact and the 4th universal contact are equal For a centre be cylinder cavity it is two-way can pass joint, it is described it is two-way can one end center of pass joint be connected with the straight of Φ 25 Pipeline section, it is described it is two-way can the other end of pass joint be connected with the straight pipe of Φ 15, Φ 10, Φ 8, Φ 6 and Φ 4.

In said program, first meter-clamping apparatus, the second meter-clamping apparatus, third meter-clamping apparatus and the 4th meter-clamping apparatus include general Siphunculus section flange, standard straight pipe, set screw, claw driving mechanism, chuck and movable jaw, the common pipeline section flange are set Set in standard straight pipe one end, the chuck setting in the standard straight pipe other end, the claw driving mechanism and Movable jaw sets up separately at the chuck both ends, and the claw driving mechanism is movably set on the standard straight pipe, described Movable jaw one end is connect across the chuck with claw driving mechanism one end, and the movable jaw other end is used for and quilt Flowmeter connection is examined, the set screw is threaded through on the claw driving mechanism other end, and the claw driving mechanism passes through The set screw is fixedly connected with the standard straight pipe.

Compared with prior art, the utility model has the beneficial effects that：

1) present apparatus is furnished with universal contact, can be embedded in liquid big flow standard set-up, extends big flow device in small stream The measurement range of amount improves the calibration accuracy of small flow, tiny flow quantity, can also connect the various pipes of Site Detection/calibration Section, flowmeter, facilitate the implementation of Site Detection/calibration；

2) present apparatus is removable, and pipeline section where tested flowmeter can be directly accessed by universal contact carries out small stream at the scene Amount, tiny flow quantity calibration, and operating platform liftable, measuring device height are adjustable, meet the device requirement of the various different heights in scene；

3) present apparatus is configured with lateral and vertical interface and clamping device, and clamping device can differ thickness screwed pipe Joint-clamping, and ensure that vertical, levelness and pipeline section internal diameter are concentric, it can assay calibration suspended body flowmeter, turbine flowmeter, quality The various flow rates meter such as flowmeter；

4) present apparatus is furnished with commutator, timer and two sets of weighing systems, it can be achieved that automatic detection, breaks away from and pinch stopwatch in the past Detection mode, two sets of weighing systems are mutual indepedent, can flexibly select the use of weighing container by commutator, improve detection effect Rate, and measuring device detaches in detection process with weighing apparatus, avoids the accuracy of the vibration damage weighing container for the process of discharging water, and rises To protective effect.

Description of the drawings

Fig. 1 is the first application implementation illustration of the embedded mobile fine liquid flowrate calibrating device of the utility model；

Fig. 2 is the connection of cart and capacitance device of weighing in the embedded mobile fine liquid flowrate calibrating device of the utility model Schematic diagram；

Fig. 3 is the structural schematic diagram of commutator in the embedded mobile fine liquid flowrate calibrating device of the utility model；

Fig. 4 is the stereochemical structure signal of universal contact in the embedded mobile fine liquid flowrate calibrating device of the utility model Figure；

Fig. 5 is the company of meter-clamping apparatus and measured stream gauge in the embedded mobile fine liquid flowrate calibrating device of the utility model Connect schematic diagram；

Fig. 6 is second of application implementation illustration of the embedded mobile fine liquid flowrate calibrating device of the utility model；

Fig. 7 is the third application implementation illustration of the embedded mobile fine liquid flowrate calibrating device of the utility model；

In figure：1, cart；1-1, telescoping handrail；1-2, supporting rack；1-3, supporting table；1-4, idler wheel；2, it first weighs Capacitance device；3, it second weighs capacitance device；4, water knockout drum；5, commutator；6, timer；7, the first pipeline section；8, big flow standard fills It sets；9, the second pipeline section；10, third pipeline section；11, first pipeline section is replaced；12, second pipeline section is replaced；13, throttle valve；14, pressure Table；15, downtake pipe；21, the first weighing container；22, the first electronic scale；23, first liter of act bracket；24, the first fixed block； 25, drain valve；26, the first capstan winch；27, the second capstan winch；31, the second weighing container；32, the second electronic scale；33, support is lifted for second liter Frame；34, the second fixed block；51, the first electromagnetic coil；52, the second electromagnetic coil；53, nozzle；100, the first detection branch； 101, the first universal contact；102, the first meter-clamping apparatus；103, the tested flowmeter being horizontally mounted；104, the second meter-clamping apparatus；105、 Second universal contact；200, the second detection branch；201, third universal contact；202, third meter-clamping apparatus；203, vertically arranged Tested flowmeter；204, the 4th meter-clamping apparatus；205, the 4th universal contact；300, third detection branch；301, live traffic sources； 302, live flowmeter；303, the 5th meter-clamping apparatus；304, the 5th universal contact；305, second exhaust pipe；400, the first branch； 401, first switch valve；402, third switch valve；500, the second branch；501, second switch valve；502, the 4th switch valve； The straight pipe of 101a, φ 25；The straight pipe of 101b, φ 15；The straight pipe of 101c, φ 10；The straight pipe of 101e, φ 8；101f、 The branch pipeline section of φ 6；The straight pipe of 101g, φ 4；102a, common pipeline section flange；102b, standard straight pipe；102c, set screw； 102d, claw driving mechanism；102e, chuck；102f, movable jaw；

" → " indicates water (flow) direction in figure.

Specific implementation mode

To make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, below In conjunction with the drawings and specific embodiments, it is expanded on further how the utility model is implemented.

As illustrated in fig. 1 and 2, a kind of embedded tiny flow quantity calibrating installation provided by the utility model, including cart 1, One weigh capacitance device 2, second weigh capacitance device 3, water knockout drum 4, commutator 5, timer 6 and the first pipeline section 7, first, which weighs, contains Set 2 and second capacitance device 3 of weighing be arranged on cart 1, timer 6 is arranged on commutator 5, and water knockout drum 4 is located at first and claims Weight capacitance device 2 and second weigh capacitance device 3 top, commutator 5 is located at 4 top of water knockout drum, 4 water inlet of water knockout drum and commutator 5 output ends connect, two water outlets of water knockout drum 4 weigh respectively with first capacitance device 2 and the second capacitance device 3 of weighing it is corresponding, 5 input terminal of commutator is connect with 7 output end of the first pipeline section, and as shown in Fig. 1, Fig. 6 and Fig. 7,7 input terminal of the first pipeline section is connected with One detection branch 100 or/and the second detection branch 200 or/and third detection branch 300.

Wherein, as shown in Fig. 2, cart 1 includes telescoping handrail 1-1, supporting rack 1-2, supporting table 1-3 and four rolling 1- 4, telescoping handrail 1-1 is arranged in the one end supporting table 1-3, and four rolling 1-4 symmetrically sets up the both sides in the bottoms supporting table 1-3 separately, Supporting rack 1-2 is arranged at the top of supporting table 1-3 and close to one end of telescoping handrail 1-1, the one end supporting rack 1-2 and supporting table 1- 3 top connections, the other end are connect with the first pipeline section 7；

Wherein, first weigh capacitance device 2 include the first weighing container 21, the first electronic scale 22 and first liter of act bracket 23, First weighing container 21 is movably arranged on the first electronic scale 22, and the first electronic scale 22 is supported on cart by the first fixed block 24 On 1 supporting table 1-3, first liter of act bracket 23 is located at the underface of the first weighing container 21, and first liter of 23 one end of act bracket It is connect with the supporting table 1-3 of cart 1, the bottom movable contact of the other end and the first weighing container 21；

Wherein, second weigh capacitance device 3 include the second weighing container 31, the second electronic scale 32 and second liter of act bracket 33, Second weighing container 31 is movably arranged on the second electronic scale 32, and the second electronic scale 32 is supported on cart by the second fixed block 34 On 1 supporting table 1-3, second liter of act bracket 33 is located at immediately below the second weighing container 31, and second liter of act bracket 33 and cart 1 Supporting table 1-3 connections, the bottom movable contact of the other end and the second weighing container 31；

Wherein, drain valve 25 there are one being also connected in the lower part of the first weighing container 21 and the second weighing container 31.

Wherein, level meter, the first electronic scale 22 and first are additionally provided on the first fixed block 24 and the second fixed block 34 Fixed block 24 is flexibly connected, and the second electronic scale 32 is flexibly connected with the second fixed block 34, the first fixed block 24 and the second fixed block 34 are fixedly connected with supporting table 1-3.

Wherein, the first capstan winch 26 and the second capstan winch 27, the first capstan winch 26 and first are additionally provided in the side of supporting table 1-3 It rises act bracket 23 to connect, the second capstan winch 27 is connect with second liter of act bracket 33.

As shown in figure 3, being also connected respectively the first electromagnetic coil 51 and the second electromagnetism in the left and right ends of commutator 5 Coil 52 has also been correspondingly connected with nozzle 53 in the upper end of commutator 5.

Embodiment 1：As shown in Figure 1, in the present embodiment, the first detection branch 100 includes to connect successively along water (flow) direction The big flow standard set-up 8 that connects, the first universal contact 101, the first meter-clamping apparatus 102, the tested flowmeter 103 being horizontally mounted, Two meter-clamping apparatus 104 and the second universal contact 105, big flow standard set-up 8 are connect with the first universal contact 101, and first omnipotent connects First 101 and first are connected by the second pipeline section 9 between meter-clamping apparatus 102, between the second meter-clamping apparatus 104 and the second universal contact 105 Pipeline section 11 is replaced by third pipeline section 10 and first to connect, the second universal contact 105 connect with the first pipeline section 7, is horizontally mounted The both ends of tested flowmeter 103 are connect with the first meter-clamping apparatus 102 and the second meter-clamping apparatus 104 respectively；

Embodiment 2：As shown in fig. 6, in the present embodiment, the second detection branch 200 includes to connect successively along water (flow) direction It is the big flow standard set-up 8 that connects, the first universal contact 101, third universal contact 201, third meter-clamping apparatus 202, vertically arranged Tested flowmeter 203, the 4th meter-clamping apparatus 204 and the 4th universal contact 205, big flow standard set-up 8 and the first universal contact 101 Connection, the first universal contact 101 replace pipeline section 12 and third pipeline section 10 and third universal contact 201 by the second pipeline section 9, second Connection, third universal contact 201 connect with third meter-clamping apparatus 202, and the both ends of vertically arranged tested flowmeter 203 are respectively with the Three meter-clamping apparatus 202 and the connection of the 4th meter-clamping apparatus 204, the 4th meter-clamping apparatus 204 are connected by the 4th universal contact 205 and the first pipeline section 7 It connects；

Embodiment 3：As shown in fig. 7, in the present embodiment, third detection branch 300 includes to connect successively along water (flow) direction Live traffic sources 301, live flowmeter 302, the 5th meter-clamping apparatus 303 and the 5th universal contact 304 connect, live traffic sources 301 It is connect with live flowmeter 302, live flowmeter 302 is connect with the 5th meter-clamping apparatus 303, the 5th meter-clamping apparatus 303 and the 5th omnipotent Connector 304 connects, and replacing pipeline section 11 by third pipeline section 10 and first between the 5th universal contact 304 and the first pipeline section 7 connects, It is also associated with second exhaust pipe 305 on the 5th universal contact 304.

As shown in figures 1 to 6, upper equipped with throttle valve 13 and pressure gauge 14 in the second pipeline section 9, in the first universal contact Downtake pipe 15 is also associated on 101.

As shown in Fig. 1, Fig. 6 and Fig. 7, the first branch 400 and are also associated between third pipeline section 10 and the first pipeline section 7 Two branches 500 are additionally provided with first switch valve corresponding with the first branch 400 and the second branch 500 respectively on third pipeline section 10 401 and second switch valve 501, respectively corresponding with the first branch 400 and the second branch 500 is additionally provided on the first pipeline section 7 Three switch valves 402 and the 4th switch valve 502.

As shown in figure 4, the first universal contact 101, the second universal contact 105, third universal contact the 201, the 4th is omnipotent connects First 205 and the 5th universal contact 304 be a centre be cylinder cavity it is two-way can pass joint, it is two-way can pass joint one End center is connected with the straight pipe 101a of Φ 25, it is two-way can the other end of pass joint be connected with Φ 15, Φ 10, Φ 8, Φ 6 and Φ 4 Straight pipe (101b, 101c, 101e, 101f and 101g).

As shown in figure 5, the first meter-clamping apparatus 102, the second meter-clamping apparatus 104, third meter-clamping apparatus 202, the 4th meter-clamping apparatus 204 and Five meter-clamping apparatus 303 include common pipeline section flange 102a, standard straight pipe 102b, set screw 102c, claw driving mechanism 102d, chuck 102e and movable jaw 102f, common pipeline section flange 102a settings are in the one end standard straight pipe 102b, chuck 102e Setting is set up separately in the standard straight pipe 102b other ends, claw driving mechanism 102d and movable jaw 102f at the both ends chuck 102e, And claw driving mechanism 102d is movably set on standard straight pipe 102b, the one end movable jaw 102f passes through chuck 102e and card The one end pawl driving mechanism 102d connects, and for being connect with tested flowmeter, set screw 102c is worn the movable jaw 102f other ends It is located on the claw driving mechanism 102d other ends, claw driving mechanism 102d passes through set screw 102c and standard straight pipe 102b It is fixedly connected.

In above three embodiments, the weighing of the first electronic scale 22 is 35kg, and the weighing of the second electronic scale 32 is 3kg, the One electronic scale 22 and 32 class of accuracy of the second electronic scale are 0.01%.

Examples detailed above 1 and example 2 are the small flows, micro- for the extension big flow standard set-up being suitable under laboratory environment The detectability of small flow；Embodiment 3 is to be suitable for Site Detection.

A kind of specific operation process of embedded mobile fine liquid flowrate calibrating device provided by the utility model is as follows：

Embodiment 1：As shown in Figure 1, by taking the first detection branch 100 as an example, the inspection of fine liquid flow is carried out in laboratory When fixed/calibration, first passes through the first universal contact 101 and be connected with liquid flow standard device 8, the tested flow that will be horizontally mounted Meter 103 is fixed with the first meter-clamping apparatus 102 and third meter-clamping apparatus 104, is sandwiched in pipeline section, and after guarantee preceding ten five straight pipe away from From after the tested flowmeter 103 being horizontally mounted installs, the first capstan winch 26 of rotation and the second capstan winch 27 rise first and weigh Container 21 and the second weighing container 31, make the first weighing container 21 be detached with the first electronic scale 22, the second weighing container 31 and Two electronic scales 32 detach, and are then shut off throttle valve 13, open first switch valve 401, second switch valve 501, third switch successively Drain valve 25 on valve 402, the 4th switch valve 502 and the second weighing container 31, and commutator 5 is switched to deviation second and is weighed First branch pipe 400 and 500 nozzle of the second branch pipe are all closed, then open downtake pipe 15, start liquid by 31 side of container Flow standard device 8 opens throttle valve 13 and takes a breath, and is adjusted to tested flow point, will after being vented about 30 seconds and stablizing Commutator 5 is gained to 21 side of the first weighing container (drain valve 25 on the first weighing container is closed) is biased to, and timer 6 starts to count When, when water reaches calibrating water consumption (or meet single examine and determine duration), then commutator 5 is switched back into deviation second and is weighed appearance 31 side of device, timer 6 terminate timing, finally close throttle valve 13, rotate the first capstan winch 26, fall first liter of act bracket 23 after rise, make First weighing container falls the water quality weighed up to the first electronic scale 22 in first weighing container 21 after rise, completes primary calibrating.

When calibrating is compared with lower-capacity point, the second smaller weighing container 31 can be used to carry out aforesaid operations.

Embodiment 2：As shown in fig. 6, by taking the second detection branch 200 as an example, when examining and determine the flowmeter of vertical direction, in reality On the basis of applying example 1, the first replacement pipeline section 11 in embodiment 1 is removed and changes vertically arranged tested flowmeter 203, by water The tested flowmeter 103 of safety dress, which is removed, changes the second replacement pipeline section 12, while closing the first branch pipe 400 and the second branch pipe 500, And it opens first switch valve 401, second switch valve 501, third switch valve 402 and the 4th switch valve 502 and is examined and determine.Such as： The first branch pipe 400 is closed, opens the second branch pipe 500, you can examined and determine using the second branch pipe 500.The second branch pipe 500 is closed, Open the first branch pipe 400, you can examine and determine the first branch pipe 400.

Embodiment 3：As shown in fig. 7, for third detection branch 300 (being used for Site Detection), the 50000th is mainly utilized Energy connector 304 and the 5th meter-clamping apparatus 303 are connect with live flowmeter 302, pass through live flowmeter 302 and live traffic sources 301 Connection carries out live flow detection.

Under a kind of operation principle of embedded mobile fine liquid flowrate calibrating device provided by the utility model enters：

Using the handoff functionality of commutator, the solution of phase in requisition for detection is switched into corresponding weighing container side, and When using timer, in the process, the bracket for capacitance device of weighing holds up weighing container, makes weighing container and electronic scale point From when water to be measured, which reaches, weighs limit, commutator being switched to another weighing container side, and timer is stopped The weighing container for filling water is put down gently using bracket and is weighed on electronic scale by timing, so obtains weigh quality m and t, can pass through Mass flow Qm and volume flow is calculated：

The calculation formula of mass flow Qm is as follows：

The calculation formula of volume flow is as follows：

(wherein ρ is the density of medium)

In detection process, by reading the indicating value Qi of tested flowmeter, tested flowmeter list can be calculated The relative error of point, calculation formula are as follows：

Or

The utility model can be used for two kinds of detection environment, i.e. laboratory environment and site environment：

When for laboratory environment, mating big flow standard set-up extends small flow, the small stream of big flow standard set-up The detectability of amount is docked with the DN25 pipeline section flanges of big flow standard set-up with the first universal contact, and is assisted by throttle valve Control flow.In the case where testing room environmental, when tested flow is calculated as the flowmeter being horizontally mounted, such as the first detection branch is used Flowmeter is sandwiched pipeline section by the scalable meter-clamping apparatus of four paws, is connected with weighing system through the second universal contact；When tested flowmeter For vertically arranged flowmeter, such as suspended body flowmeter, such as the second detection branch, flow overcurrent gauge directly enter through commutator Weighing system.

When for Site Detection environment, such as third detection branch, with the 5th universal contact, the 5th meter-clamping apparatus and live flow The live traffic sources of meter access, are detected.

Finally illustrate, the above description is only the embodiments of the present invention, is not intended to limit the patent of the utility model Range, equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, or directly or Other related technical areas are used in indirectly, are equally included in the patent within the scope of the utility model.

Claims (10)

1. a kind of embedded mobile fine liquid flowrate calibrating device, which is characterized in that weigh and contain comprising cart (1), first It sets (2), second weigh capacitance device (3), water knockout drum (4), commutator (5), timer (6) and the first pipeline section (7), described first claims Weight capacitance device (2) and the second capacitance device (3) of weighing are arranged on the cart (1), and timer (6) setting is changed described To on device (5), the water knockout drum (4) be located at described first weigh capacitance device (2) and second weigh capacitance device (3) top, institute It states commutator (5) to be located above the water knockout drum (4), water knockout drum (4) water inlet connects with the commutator (5) output end It connects, two water outlets of the water knockout drum (4) are weighed with described first respectively capacitance device (2) and second weighs capacitance device (3) phase Corresponding, commutator (5) input terminal is connect with the first pipeline section (7) output end, the first pipeline section (7) input terminal connection There are the first detection branch (100) or/and the second detection branch (200) or/and third detection branch (300).

2. embedded mobile fine liquid flowrate calibrating device according to claim 1, it is characterised in that：The cart (1) include telescoping handrail (1-1), supporting rack (1-2), supporting table (1-3) and four rolling (1-4), the telescoping handrail (1-1) is arranged in the one end the supporting table (1-3), and the four rolling (1-4) is symmetrically set up separately in the bottom the supporting table (1-3) Both sides, support frame as described above (1-2) setting is at the top of the supporting table (1-3) and close to the one of the telescoping handrail (1-1) It is connect at the top of end, support frame as described above one end (1-2) and the supporting table (1-3), the other end is connect with first pipeline section (7)；

Described first weigh capacitance device (2) include the first weighing container (21), the first electronic scale (22) and first liter of act bracket (23), first weighing container (21) is movably arranged on first electronic scale (22), and first electronic scale (22) is logical It crosses the first fixed block (24) to be supported in the supporting table (1-3) of the cart (1), first liter of act bracket (23) is located at described The underface of first weighing container (21), and the supporting table (1-3) of first liter of act bracket (23) one end and the cart (1) Connection, the bottom movable contact of the other end and first weighing container (21)；

Described second weigh capacitance device (3) include the second weighing container (31), the second electronic scale (32) and second liter of act bracket (33), second weighing container (31) is movably arranged on second electronic scale (32), and second electronic scale (32) is logical It crosses the second fixed block (34) to be supported in the supporting table (1-3) of the cart (1), second liter of act bracket (33) is located at described Immediately below second weighing container (31), and second liter of act bracket (33) connect with the supporting table (1-3) of the cart (1), The bottom movable contact of the other end and second weighing container (31)；

Drain valve (25) there are one being also connected in the lower part of first weighing container (21) and the second weighing container (31).

3. embedded mobile fine liquid flowrate calibrating device according to claim 2, it is characterised in that：Described first Level meter, first electronic scale (22) and first fixed block are additionally provided on fixed block (24) and the second fixed block (34) (24) it is flexibly connected, second electronic scale (32) is flexibly connected with second fixed block (34), first fixed block (24) and the second fixed block (34) is fixedly connected with the supporting table (1-3).

4. embedded mobile fine liquid flowrate calibrating device according to claim 2, it is characterised in that：In the support The side of platform (1-3) is additionally provided with the first capstan winch (26) and the second capstan winch (27), first capstan winch (26) with described first liter It lifts bracket (23) to connect, second capstan winch (27) connect with second liter of act bracket (33).

5. embedded mobile fine liquid flowrate calibrating device according to claim 1, it is characterised in that：In the commutation The left and right ends of device (5) have also been connected respectively the first electromagnetic coil (51) and the second electromagnetic coil (52), in the commutation The upper end of device (5) has also been correspondingly connected with nozzle (53).

6. embedded mobile fine liquid flowrate calibrating device according to claim 1, which is characterized in that first inspection It includes along the sequentially connected big flow standard set-up (8) of water (flow) direction, the first universal contact (101), first to survey branch (100) Meter-clamping apparatus (102), the tested flowmeter (103) being horizontally mounted, the second meter-clamping apparatus (104) and the second universal contact (105), it is described Big flow standard set-up (8) is connect with the first universal contact (101), first universal contact (101) and the first meter-clamping apparatus (102) it is connected by the second pipeline section (9) between, by the between second meter-clamping apparatus (104) and the second universal contact (105) Three pipeline sections (10) and the first replacement pipeline section (11) connect, and second universal contact (105) connect with first pipeline section (7), The both ends of the tested flowmeter (103) being horizontally mounted respectively with first meter-clamping apparatus (102) and the second meter-clamping apparatus (104) Connection；

Second detection branch (200) includes along the sequentially connected big flow standard set-up (8) of water (flow) direction, first omnipotent Connector (101), third universal contact (201), third meter-clamping apparatus (202), vertically arranged tested flowmeter (203), the 4th folder Table device (204) and the 4th universal contact (205), the big flow standard set-up (8) connect with first universal contact (101) Connect, first universal contact (101) by the second pipeline section (9), second replace pipeline section (12) and third pipeline section (10) with it is described Third universal contact (201) connects, and the third universal contact (201) connect with the third meter-clamping apparatus (202), described vertical The both ends of tested flowmeter (203) of installation are connect with third meter-clamping apparatus (202) and the 4th meter-clamping apparatus (204) respectively, and described the Four meter-clamping apparatus (204) are connect by the 4th universal contact (205) with first pipeline section (7)；

The third detection branch (300) includes along the sequentially connected live traffic sources (301) of water (flow) direction, live flowmeter (302), the 5th meter-clamping apparatus (303) and the 5th universal contact (304), the scene traffic sources (301) and the live flowmeter (302) connect, it is described scene flowmeter (302) connect with the 5th meter-clamping apparatus (303), the 5th meter-clamping apparatus (303) and 5th universal contact (304) connection, passes through third between the 5th universal contact (304) and first pipeline section (7) Pipeline section (10) and the first replacement pipeline section (11) connect, and second exhaust pipe is also associated on the 5th universal contact (304) (305)。

7. embedded mobile fine liquid flowrate calibrating device according to claim 6, which is characterized in that described second Pipeline section (9) is equipped with throttle valve (13) and pressure gauge (14), and first row is also associated on first universal contact (101) Tracheae (15).

8. embedded mobile fine liquid flowrate calibrating device according to claim 6, which is characterized in that in the third The first branch (400) and the second branch (500) are also associated between pipeline section (10) and first pipeline section (7), in the third First switch valve (401) corresponding with the first branch (400) and the second branch (500) and second respectively is additionally provided on pipeline section (10) Switch valve (501) is additionally provided with corresponding with the first branch (400) and the second branch (500) respectively on first pipeline section (7) Third switch valve (402) and the 4th switch valve (502).

9. embedded mobile fine liquid flowrate calibrating device according to claim 6, which is characterized in that the described 10000th Can connector (101), the second universal contact (105), third universal contact (201), the 4th universal contact (205) and the 5th omnipotent connect Head (304) be a centre be cylinder cavity it is two-way can pass joint, it is described it is two-way can pass joint one end center connection Have a straight pipe (101a) of Φ 25, it is described it is two-way can the other end of pass joint be connected with the straight of Φ 15, Φ 10, Φ 8, Φ 6 and Φ 4 Pipeline section (101b, 101c, 101e, 101f and 101g).

10. embedded mobile fine liquid flowrate calibrating device according to claim 6, it is characterised in that：Described first Meter-clamping apparatus (102), the second meter-clamping apparatus (104), third meter-clamping apparatus (202), the 4th meter-clamping apparatus (204) and the 5th meter-clamping apparatus (303) Include common pipeline section flange (102a), standard straight pipe (102b), set screw (102c), claw driving mechanism (102d), chuck (102e) and movable jaw (102f), the common pipeline section flange (102a) are arranged in the standard straight pipe The one end (102b), the chuck (102e) are arranged in standard straight pipe (102b) other end, the claw driving mechanism (102d) and movable jaw (102f) set up separately at the both ends the chuck (102e), and the claw driving mechanism (102d) movable sleeve It is located on the standard straight pipe (102b), described movable jaw (102f) one end passes through the chuck (102e) and the claw The one end driving mechanism (102d) connects, and movable jaw (102f) other end with tested flowmeter for connecting, the positioning Screw (102c) is threaded through on claw driving mechanism (102d) other end, and the claw driving mechanism (102d) passes through described Set screw (102c) is fixedly connected with the standard straight pipe (102b).