CN209280099U - A kind of liquid small flowmeter calibration equipment - Google Patents
A kind of liquid small flowmeter calibration equipment Download PDFInfo
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- CN209280099U CN209280099U CN201822060697.8U CN201822060697U CN209280099U CN 209280099 U CN209280099 U CN 209280099U CN 201822060697 U CN201822060697 U CN 201822060697U CN 209280099 U CN209280099 U CN 209280099U
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- flowmeter
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Abstract
The utility model relates to a kind of liquid small flowmeter calibration equipments, it includes reservoir, connecting tube, proving flowmeter and measured stream meter, the connecting tube is fixedly connected on reservoir side wall lower ends, the proving flowmeter and measured stream meter series connection are in connecting tube, the side wall lower ends of the reservoir are equipped with water outlet, the water outlet is threadedly coupled with connecting tube, and the reservoir sidewall upper is equipped with the first water inlet and the second water inlet, and the columns base is equipped with discharge outlet；The connecting tube is equipped with the permanent flow valve for adjusting flow rate of liquid in connecting tube close to water outlet one end.The utility model has the effect of making flow rate of liquid in flowmeter to stablize raising checking precision.The utility model is suitable for fluid flowmeter.
Description
Technical field
The utility model relates to calibration equipment technical field, in particular to a kind of liquid small flowmeter calibration equipment.
Background technique
The calibrating and calibration of flowmeter are that the vertification regulation for the various flowmeters promulgated according to State Metrological Bureau carries out.Mesh
Flowmeter applied by preceding, in addition to standard throttle apparatus need not carry out experiment calibrating, remaining flowmeter is nearly all wanted when dispatching from the factory
It is examined and determine.During flowmeter use, also should often it be calibrated.The calibration method of fluid flowmeter mainly has volume
Method, mass method, standard volume tube method and proving flowmeter comparison method.
Proving flowmeter comparison method be by by school flowmeter and proving flowmeter series connection in the pipeline for flowing through test fluid
On, error is found out by comparing two kinds of measured value, but in actual use, pipeline usually connects with water tank bottom side wall
Logical, when filling measurement liquid in water tank, water tank bottom pressure is larger, will easily measure in liquid indentation pipeline.But with water tank
The reduction of interior measurement liquid, water tank bottom pressure are gradually reduced, and measurement liquid is not easy to be pressed into pipeline.Measurement liquid is being passed through
During pipeline, with the reduction of water tank bottom pressure, measure liquid and enter the flow velocity of pipeline and constantly become smaller, measurement liquid into
When entering proving flowmeter and calibrated flowmeter, flow velocity is unstable, and checking precision is low.
Utility model content
The purpose of the utility model is to provide a kind of liquid small flowmeter calibration equipments, and having makes flow rate of liquid in flowmeter
Stablize the advantages of improving checking precision.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of liquid small flowmeter calibration equipment, including reservoir, connecting tube, proving flowmeter and measured stream meter, institute
State connecting tube and be fixedly connected on reservoir side wall lower ends, the proving flowmeter and measured stream meter series connection in connecting tube,
The side wall lower ends of the reservoir are equipped with water outlet, and the water outlet is threadedly coupled with connecting tube, the reservoir sidewall upper
Equipped with the first water inlet and the second water inlet, the columns base is equipped with discharge outlet；The connecting tube is close to water outlet one end
Equipped with the permanent flow valve for adjusting measurement flow rate of liquid.
By using above-mentioned technical proposal, the liquid in reservoir flows into connecting tube from water outlet, in reservoir liquid compared with
When more, liquid self gravity is larger to columns base pressure, so that liquid is entered connection velocity in pipes very fast；When liquid in reservoir
When body is less, liquid is smaller to columns base pressure, so that liquid is entered connection velocity in pipes slower.Permanent flow valve can be effectively
Flow rate of liquid is adjusted, flow velocity is more stable after so that liquid is passed through permanent flow valve, to improve the checking precision of flowmeter；Discharge outlet is convenient
Liquid drains in reservoir, convenient for the cleaning of reservoir.
The utility model is further arranged to: the reservoir upper end is equipped with the pressure reducing valve for adjusting reservoir internal pressure,
The pressure reducing valve is equipped with the first air pump far from reservoir one end, and the reservoir upper end is equipped with the pressure of pressure in detection reservoir
Table.
By using above-mentioned technical proposal, the first air pump compresses air, and compressed air is passed through water storage after pressure reducing valve
Chi Zhong, pressure in the adjustable reservoir of pressure reducing valve when liquid is reduced in reservoir, keep pressure in reservoir to stablize, make
Liquid is to keep flow rate of liquid more stable, to improve checking precision in stable pressure indentation connecting tube.
The utility model is further arranged to: the connecting tube is S-shaped to be arranged perpendicular to horizontal plane, on the downside of the connecting tube
Bracket equipped with support connecting tube.
By using above-mentioned technical proposal, liquid passes through S-shaped connecting tube, plays buffer function, can further decrease liquid
Body flow velocity makes liquid vulnerable to inertia effects, not enter proving flowmeter and measured stream meter steadily, to improve verification essence
Degree.
The utility model is further arranged to: the connection pipe end is equipped with the sink for receiving liquid, the sink peripheral hardware
There is water pump, water pipe is fixedly connected on the water pump, the water pipe is fixedly connected far from water pump one end with the second water inlet.
By using above-mentioned technical proposal, sink can collect the liquid after examining, and the liquid in sink is taken out by water pump
Enter in reservoir, liquid is recycled, to reduce verification cost.
The utility model is further arranged to: it is vertical that the proving flowmeter and measured flux meter are separately positioned on connecting tube
On direction, the proving flowmeter is identical with measured stream meter mounting height.
By using above-mentioned technical proposal, proving flowmeter and measured stream meter vertical direction are placed, and it is used to reduce liquid
Property influence to testing accuracy, proving flowmeter and measured stream meter height are identical, when liquid ascend into proving flowmeter and
Measured flux timing, the kinetic energy of liquid are converted to gravitional force, and kinetic energy needed for height same liquid rises is identical, and liquid enters mark
Quasi- flowmeter and measured flux timing are more stable, keep check results more accurate.
The utility model is further arranged to: the connecting tube between the permanent flow valve and water outlet is equipped with the first electromagnetism
Valve, the connecting tube are equipped with second solenoid valve close to proving flowmeter entrance one end, and the connecting tube is included in close to measured flux
Mouth one end is equipped with third solenoid valve.
By using above-mentioned technical proposal, the first solenoid valve can control the opening and closing of calibration equipment, verify fluid flowmeter
When, it sequentially opens the first solenoid valve, second solenoid valve and third solenoid valve, liquid and sequentially enters proving flowmeter and measured flux
Meter, to complete verifying work.The first solenoid valve is closed after the completion of verification, and the liquid in reservoir is made to cannot be introduced into connecting tube,
Close second solenoid valve and third solenoid valve, the liquid in connecting tube further made to be not susceptible to flow, thus be convenient for changing by
Flow measurement meter.
The utility model is further arranged to: the connecting tube between first solenoid valve and permanent flow valve is filled equipped with drain
Set, the pumping equipment includes the air inlet pipe being fixedly connected with connecting tube, and the air inlet pipe is equipped with the 4th solenoid valve, it is described into
Tracheae is equipped with the second air pump far from the 4th solenoid valve one end.
By using above-mentioned technical proposal, after having verified measured stream meter, the first solenoid valve is closed, opens the 4th electromagnetism
Valve, the second air pump are ventilated into connecting tube, and the liquid in connecting tube is discharged, measured stream meter is convenient for changing.
The utility model is further arranged to: the reservoir inner wall is equipped with the liquid level of liquid level in detection reservoir
Meter, the reservoir are equipped with controller, the liquidometer, the first solenoid valve, second solenoid valve, third solenoid valve, the 4th electricity
Magnet valve, the first air pump, the second air pump and water pump are electrically connected with the controller.
By using above-mentioned technical proposal, liquid level in liquidometer real-time detection reservoir, when liquid level is too low,
Controller controls water pump and opens, and the liquid in sink is pumped into reservoir by water pump, when liquidometer detects that liquid level reaches normally
When height, controller switches off the pump, and in pump process, controller controls the first solenoid valve and closes water pump, after the completion of drawing water, control
Device processed controls the first solenoid valve and opens, and continues for liquid to be passed through in connecting tube, to complete the verification to measured stream meter.
In conclusion the utility model has the following beneficial effects:
1. can play by the setting of permanent flow valve and be stably connected with liquid in pipe flow velocity to improve flowmeter checking precision
Effect；
2. passing through the setting of pressure reducing valve and the first air pump, it can play and adjust reservoir pressure, keep flow rate of liquid stable
Effect；
3. by the setting of sink and water pump, it can play recycling liquid and reduce the effect of cost.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
In figure, 1, reservoir；11, water outlet；12, the first water inlet；13, the second water inlet；14, discharge outlet；141, hand
Dynamic valve；15, pressure reducing valve；16, pressure gauge；17, the first air pump；18, liquidometer；19, controller；2, connecting tube；21, permanent flow valve；
22, the first solenoid valve；23, second solenoid valve；24, third solenoid valve；25, pumping equipment；251, air inlet pipe；252, the 4th electromagnetism
Valve；253, the second air pump；3, bracket；4, proving flowmeter；5, measured stream meter；6, sink；61, water pipe；62, water pump.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Referring to Fig.1, a kind of liquid small flowmeter calibration equipment disclosed by the utility model, including reservoir 1, connecting tube 2,
Proving flowmeter 4 and measured stream meter 5, pressure reducing valve 15 is equipped with above reservoir 1, and compressed air is passed through storage after pressure reducing valve 15
In pond 1, pressure in the adjustable reservoir 1 of pressure reducing valve 15 when liquid is reduced in reservoir 1, keeps pressure in reservoir 1
Stablize, makes liquid to keep flow rate of liquid more stable, to improve checking precision in stable pressure indentation connecting tube 2.Decompression
Valve 15 is equipped with the first air pump 17 far from 1 one end of reservoir, and 1 upper end of reservoir is equipped with pressure gauge 16 far from 15 side of pressure reducing valve, stores
1 side wall one end of pond is equipped with the first water inlet 12 and the second water inlet 13, and 1 side wall of reservoir is set different from 12 side of the first water inlet
There are liquidometer 18 and controller 19,1 bottom of reservoir is equipped with discharge outlet 14, and discharge outlet 14 is equipped with hand-operated valve 141, reservoir 1
Side wall lower ends are equipped with water outlet 11, and water outlet 11 is threadedly coupled with connecting tube 2.
Referring to Fig.1, connecting tube 2 is equipped with the first solenoid valve 22 close to water inlet one end, and the first solenoid valve 22 is far from reservoir 1
Side is equipped with pumping equipment 25, and pumping equipment 25 includes the air inlet pipe 251 being fixedly connected with connecting tube 2, and air inlet pipe 251 is equipped with
4th solenoid valve 252, air inlet pipe 251 are equipped with the second air pump 253 far from 2 side of connecting tube.After having verified measured stream meter 5, close
The first solenoid valve 22 is closed, opens the 4th solenoid valve 252, the second air pump 253 is ventilated into connecting tube 2, by the liquid in connecting tube 2
Discharge, is convenient for changing measured stream meter 5.
Referring to Fig.1, the connecting tube 2 on 25 right side of pumping equipment is equipped with permanent flow valve 21, and permanent flow valve 21 can be adjusted effectively
Flow rate of liquid, flow velocity is more stable after so that liquid is passed through permanent flow valve 21, to improve the checking precision of flowmeter.21 right side of permanent flow valve
It is sequentially connected with second solenoid valve 23, proving flowmeter 4, third solenoid valve 24 and measured stream meter 5,2 end of connecting tube is equipped with
The sink 6 of liquid is received, sink 6 is externally provided with water pump 62, and the liquid in sink 6 is pumped into reservoir 1 by water pipe 61 by water pump 62,
Liquid is recycled, cost is significantly reduced.
The implementation principle of the present embodiment are as follows: proving flowmeter 4 and measured stream meter 5 are sequentially mounted in connecting tube 2, led to
It crosses controller 19 and opens the first air pump 17, compressed air is pressed into reservoir 1 by the first air pump 17 by pressure reducing valve 15, observation pressure
Power table 16 opens the first solenoid valve 22, second solenoid valve 23 and third solenoid valve 24 when the registration of pressure gauge 16 is stablized, the
Four solenoid valves 252 closure.Liquid flows into connecting tube 2 by water outlet 11, and the liquid in connecting tube 2 is adjusted by permanent flow valve 21
Afterwards, liquid is sequentially energized with proving flowmeter 4 and measured stream meter 5 with stable flow velocity, to complete the school to measured stream meter 5
It tests, the liquid of connecting tube 2 is passed through in sink 6 after the completion of verification.
When replacing measured stream meter 5, the first solenoid valve 22 is closed by controller 19, makes the liquid in reservoir 1 can not
Connecting tube 2 is flowed into, the 4th solenoid valve 252 and the second air pump 253 are opened, compressed air is passed through into connecting tube 2, compressed air will
In the liquid indentation sink 6 of connecting tube 2, it is convenient for changing measured stream meter 5.
The height of liquid level in 18 real-time detection reservoir 1 of liquidometer in reservoir 1, when liquid level is too low, control
Device 19 is closed the first solenoid valve 22, opens the first water pump 62, and the liquid in sink 6 is pumped into reservoir 1, when liquidometer 18 is examined
When measuring 1 liquid level of reservoir and reaching normal level, controller 19 closes the first water pump 62 to be had so as to recycle liquid
Reduce costs to effect.
The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this
The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical
Within novel protection scope.
Claims (8)
1. a kind of liquid small flowmeter calibration equipment, including reservoir (1), connecting tube (2), proving flowmeter (4) and measured stream
Meter (5), the connecting tube (2) are fixedly connected on reservoir (1) side wall lower ends, the proving flowmeter (4) and measured flux
(5) series connection is counted on connecting tube (2), it is characterised in that: the side wall lower ends of the reservoir (1) are equipped with water outlet (11), institute
It states water outlet (11) to be threadedly coupled with connecting tube (2), reservoir (1) sidewall upper is equipped with the first water inlet (12) and second
Water inlet (13), reservoir (1) bottom are equipped with discharge outlet (14)；The connecting tube (2) sets close to water outlet (11) one end
There is the permanent flow valve (21) of adjusting connecting tube (2) interior flow rate of liquid.
2. a kind of liquid small flowmeter calibration equipment according to claim 1, it is characterised in that: on the reservoir (1)
End is equipped with the pressure reducing valve (15) for adjusting reservoir (1) internal pressure, and the pressure reducing valve (15) is equipped with the far from reservoir (1) one end
One air pump (17), reservoir (1) upper end are equipped with the pressure gauge (16) of detection reservoir (1) interior pressure.
3. a kind of liquid small flowmeter calibration equipment according to claim 2, it is characterised in that: the connecting tube (2) is in S
Shape is arranged perpendicular to horizontal plane, and the bracket (3) of support connecting tube (2) is equipped on the downside of the connecting tube (2).
4. a kind of liquid small flowmeter calibration equipment according to claim 3, it is characterised in that: connecting tube (2) end
End is equipped with the sink (6) for receiving liquid, and the sink (6) is externally provided with water pump (62), is fixedly connected with water on the water pump (62)
It manages (61), the water pipe (61) is fixedly connected far from water pump (62) one end with the second water inlet (13).
5. a kind of liquid small flowmeter calibration equipment according to claim 4, it is characterised in that: the proving flowmeter
(4) it is separately positioned on connecting tube (2) vertical direction with measured stream meter (5), the proving flowmeter (4) and measured stream meter
(5) mounting height is identical.
6. a kind of liquid small flowmeter calibration equipment according to claim 5, it is characterised in that: the permanent flow valve (21) and
Connecting tube (2) between water outlet (11) is equipped with the first solenoid valve (22), and the connecting tube (2) is close to proving flowmeter (4)
Entrance one end is equipped with second solenoid valve (23), and the connecting tube (2) is equipped with third electromagnetism close to measured stream meter (5) entrance one end
Valve (24).
7. a kind of liquid small flowmeter calibration equipment according to claim 6, it is characterised in that: first solenoid valve
(22) connecting tube (2) between permanent flow valve (21) is equipped with pumping equipment (25), and the pumping equipment (25) includes and connection
The air inlet pipe (251) that pipe (2) is fixedly connected, the air inlet pipe (251) are equipped with the 4th solenoid valve (252), the air inlet pipe
(251) the second air pump (253) are equipped with far from the 4th solenoid valve (252) one end.
8. a kind of liquid small flowmeter calibration equipment according to claim 7, it is characterised in that: in the reservoir (1)
Wall is equipped with the liquidometer (18) of detection reservoir (1) interior liquid level, and the reservoir (1) is equipped with controller (19), described
Liquidometer (18), the first solenoid valve (22), second solenoid valve (23), third solenoid valve (24), the 4th solenoid valve (252), first
Air pump (17), the second air pump (253) and water pump (62) are electrically connected with controller (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060697.8U CN209280099U (en) | 2018-12-07 | 2018-12-07 | A kind of liquid small flowmeter calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822060697.8U CN209280099U (en) | 2018-12-07 | 2018-12-07 | A kind of liquid small flowmeter calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209280099U true CN209280099U (en) | 2019-08-20 |
Family
ID=67610632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822060697.8U Active CN209280099U (en) | 2018-12-07 | 2018-12-07 | A kind of liquid small flowmeter calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209280099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114466586A (en) * | 2019-09-30 | 2022-05-10 | 精密种植有限责任公司 | System and method for testing agricultural implements |
-
2018
- 2018-12-07 CN CN201822060697.8U patent/CN209280099U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114466586A (en) * | 2019-09-30 | 2022-05-10 | 精密种植有限责任公司 | System and method for testing agricultural implements |
| CN114466586B (en) * | 2019-09-30 | 2023-11-28 | 精密种植有限责任公司 | System and method for testing agricultural implement |
| US11971029B2 (en) | 2019-09-30 | 2024-04-30 | Precision Planting Llc | Test frame and methods for fluidly testing agricultural devices |
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