CN209247077U - One kind unloading oil flowmeter - Google Patents
One kind unloading oil flowmeter Download PDFInfo
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- CN209247077U CN209247077U CN201822186293.3U CN201822186293U CN209247077U CN 209247077 U CN209247077 U CN 209247077U CN 201822186293 U CN201822186293 U CN 201822186293U CN 209247077 U CN209247077 U CN 209247077U
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Abstract
The utility model discloses one kind and unloads oil flowmeter, and the outlet end of quick-release connector is connected with elbow component, and the outlet end of elbow component is connected with liquid detection pipeline section；The elbow body of elbow component includes the entrance pipeline section and outlet pipe section being connected with each other, and entrance pipeline section is connected with the quick-release connector, and outlet pipe section connects with the entrance of liquid detection pipeline section；By towards end face bearing and sliding bearing is successively embedded in the axial direction of rotor assembly in bearing block, the roller end of the rotor assembly connects after passing through the sliding bearing with the end face of end face bearing；The columned rectifier in honeycomb structure of two-stage is additionally provided in the arrival end of the measuring chute；A vacuum brake is equipped at the outlet end of metering unit, the vacuum brake includes body, airflow channel and mounting hole is equipped in the body, the both ends of airflow channel are communicated with the atmosphere.This unloads that oil flowmeter is easy to operate, and measuring accuracy is high.
Description
Technical field
The utility model belongs to measuring equipment when RTC unloading field of measuring techniques more particularly to a kind of emptying.
Background technique
Oil product is transported from oil depot to gas station and is generally transported using tank truck, when tank truck stops gas station to gas station
When burying tank transporting oil, a measurable device is needed to examine and determine oil product quantity.There are two types of current means, first is that with buried
The liquidometer of tank measures, and another kind measured with dedicated skid metering units.It is not achieved with liquidometer measuring accuracy
It is required that easily causing both sides' dispute；And skid metering units are than cumbersome, it is inconvenient for operation, for Gas station worker require compared with
It is high.Current emptying mode, as shown in Figure 1, since the bottom tank truck a is horizontal pipeline b, and common flow instrument c (flow
Meter) incoming end be also straight pipe b, resulting in connection between flow instrument c and the horizontal pipeline b of tank truck a in this way is water
Flushconnection mounting means, this mounting means have a very big drawback, are exactly when the oil product liquid level in horizontal pipeline b is lower than level
When oil product non-full pipe state at the top of the inner wall of pipeline b, that is, in horizontal pipeline b, then accordingly by the liquid of flow instrument c
Body is just in non-non-full pipe state, and the signal that flow instrument c is measured in this state just can not correctly indicate flow.Secondly,
Rotor rotation in flowmeter is very flexible, and even general air-flow is sprung up and can also be rotated with drive rotor, and before emptying
There is large quantity of air, come drive rotor rotation, to cause idler Pulse, to influence measuring accuracy by flowmeter afterwards.Due to current
Various measuring equipments all there are some unavoidable defects, so needing a kind of completely new measuring equipment, this metering is set
It is standby should be easy to operate, and precision prescribed is high.
Utility model content
Utility model aims to solve above-mentioned technical problems, provide one kind and unload oil flowmeter, this unloads oil flowmeter
It is inconvenient when to buried tank emptying to efficiently solve current tank truck, the not high technical problem of measuring accuracy.
The technical solution of the utility model is as follows:
One kind unloading oil flowmeter, including the quick-release connector being connected with the horizontal pipeline of tank truck bottom and the meter being attached thereto
Measure component；The metering unit is integrally embedded in metering chamber enclosure, and the metering unit includes measuring chute and is mounted on metering
Rotor assembly in storehouse and two secondary supports being similarly installed in measuring chute, two secondary support are located at the rotor assembly
Both ends, the bracket includes columned cylindrical portion, rounded centered on the center of circle of cylindrical portion on the cylindrical surface of cylindrical portion
It is connected with several in array and shunts gusset, the outer ledge for shunting gusset connects with measuring chute inner wall and is fixed on measuring chute
It is interior；It is embedded with bearing block in one end end face of the cylindrical portion towards rotor assembly, by the axial direction towards rotor assembly in bearing block
On be successively embedded with end face bearing and sliding bearing, the roller end of the rotor assembly pass through after the sliding bearing with end face axis
The end face held connects；It is additionally provided with the columned rectifier in honeycomb structure of two-stage in the arrival end of the measuring chute, it is described
Rectifier face is located at the bracket of arrival end；
A vacuum brake is equipped at the outlet end of the metering unit, the vacuum brake includes body, institute
It states and is equipped with airflow channel and mounting hole in body, wherein the airflow channel is three sub-channels successively join end to end and are in Π
The both ends of the air flow channel of type, the airflow channel are communicated with the atmosphere, and the mounting hole is positioned vertically within the airflow channel
Between two subchannels being vertically arranged, and the top of mounting hole is connected to the horizontal sub-passages of airflow channel, bottom end with it is described
The outlet end of metering unit is connected to；Pressure regulating device is installed in the mounting hole, the pressure regulating device from top to bottom successively wraps
Valve seat, sliding sleeve, guide ring are included, valve seat is embedded in the top of mounting hole, from top to bottom has on the axis of valve seat and abut each other connection
Cylindrical hole and conical bore and conical bore big end downward, cylindrical hole is connected to the horizontal sub-passages, and the guide ring is fixedly
It is mounted on the lower part in mounting hole；The guide ring is stretched out in the valve rod bottom end of spool, at the top of bulb be located at the circular cone
At the portlet in hole, be cased with cylindrical spring on the valve rod between the guide ring and sliding sleeve, described cylindrical spring one end with lead
Connect to ring end face, the other end sliding sleeve is jacked up upward and make the periphery of the gasket being sandwiched between bulb and sliding sleeve with
The inner wall close proximity of the conical bore；Also have on the guide ring connection metering unit outlet end and guide ring and valve seat it
Between cavity perforation；
It is connected with elbow component in the outlet end of the quick-release connector, the outlet end of the elbow component is connected with liquid spy
Test tube section；Wherein, the elbow component includes elbow body and level-one rectifier, and elbow body includes the inlet tube being connected with each other
Section and outlet pipe section, entrance pipeline section are connected with the quick-release connector, and outlet pipe section connects with the entrance of liquid detection pipeline section,
The level-one rectifier is installed in outlet pipe section；The liquid detection inner tube segment is equipped with for having detected whether liquid flow
The liquid detection sensor crossed；It is docked with measuring room housing entry end and makes liquid in liquid detection pipeline section outlet end
The pore of pipeline section and the arrival end coaxial communication of the turbine flowmeter are detected, detects pipeline section and turbine flowmeter in the liquid
Between be additionally provided with Rectigon section, the Rectigon section be embedded in metering chamber enclosure in and the arrival end with turbine flowmeter
It is coaxial docking, is embedded with second level rectifier, second level rectifier and the level-one rectifier co-axially align in Rectigon section；
There are the window assembly that can be had an X-rayed, the window assembly middle part in the outlet end abutting joint of the metering chamber enclosure
For straight pipe, one of straight pipe is the hardened structure of square flange, the other end round bottle lid-like tapped in inner wall, institute
It states straight pipe and is mounted on sealing ring on the inner wall at its both ends, annular tube shaped perspective part insertion straight pipe is interior and squeezes two
The sealing ring and realize sealed connection；The window assembly is socketed on F type quick-release connector away from the threaded one end of perspective part.
Preferably, the shunting gusset includes the trapezoidal plate and lug plate for being slab construction, and the trapezoidal plate is at right angle
Trapezoidal shape, the inclination waist in two waist of trapezoidal plate are arranged towards rotor assembly one end and by dipping down in the axial direction towards rotor assembly
Tiltedly, another waist that the lug plate is integrally connected to trapezoidal plate leans at the right-angled apices of measuring chute port edge, so that
It obtains lug plate and trapezoidal plate and forms a rectangular-shaped step away from that bottom edge of cylindrical portion；The measuring chute is cylindrical
Tubular structure, and its both ends is respectively fitted on the step so that two secondary supports are mounted on the two of measuring chute with being respectively embedded into formula
End.
Preferably, the rotor assembly be turbine assembly, the turbine assembly include mandrel and on mandrel along its length
The blade that direction is helically arranged；The helical blade is equipped with the oppositely oriented of two and two blades, and two blades are set respectively
It sets in the two opposite sides of mandrel；It is embedded with the first magnet steel respectively at its both ends on every blade, two on every blade the
The second magnet steel is also embedded between one magnet steel, one end polarity of all first magnet steel towards blade outboard is identical, and two second magnet steel are towards leaf
One end polarity on the outside of piece is opposite.Further, the blade is double leads, and every blade includes the survey being linked together
Measure section and stress section, wherein measuring section lead is P1, axial length L1, and stress section lead is P2, axial length L2, P1 >
P2, L1 > L2.
Preferably, the dirt filtrating screen for covering all the portlet of the conical bore is additionally provided at the top of the valve seat.
Preferentially, the electronic watch head of display flow information is also equipped on the metering chamber enclosure, the electronic watch head passes through
Two supported signal sensors in metering room housing are mounted on to obtain flow information, the position of the signal transducer installation should make
It obtains in turbine rotation, two first magnet steel can respectively correspond two supported signal sensors, and second magnet steel also individually corresponds to
One supported signal sensor.
Preferentially, several waist holes are equipped with along its circumferencial direction on the tube wall of the straight pipe, all waist holes are with straight pipe
Axis on point be the rounded array in the center of circle, all waist holes by the perspective part closure.
Preferentially, one end of the level-one rectifier towards the entrance pipeline section is covered with the filter screen for filtering.
Preferentially, the level-one rectifier is to wait hexagonal honeycombs shape structure；The aperture of the hexagonal honeycomb shape structure
No more than 4.8mm, wall thickness is not in 0.1mm.
Preferentially, the angle between the entrance pipeline section and outlet pipe section of the elbow body is 10~30 degree.
Preferentially, the liquid detection sensor is equipped with a pair, and two liquid detection sensors are oppositely arranged in the horizontal plane.
The utility model has the beneficial effects that the utility model has selected metering of the turbine flowmeter as oil discharge metering installation
Unit, turbine flowmeter are a kind of velocity flowmeters, its structure is more compact for traditional volumetric flowmeter,
Weight is smaller, installation easy to carry, so that operating of can holding of one staff when emptying.But because whirlpool
Flowmeters are velocity flowmeter, more sensitive to fluid state for other volumetric flowmeters, only when
Into turbo blade front axle to fluid velocity v in cross section to high-precision is just able to maintain in the case wheres grade, i.e. by blade
Fluid necessarily be in laminar condition, the measuring accuracy of turbine flowmeter can be effectively ensured.In addition, the utility model is in order to keep away
Exempt from oil product when emptying to flow into flowmeter not in the form of full packages and be provided with above-mentioned elbow component, but passes through elbow component
Fluid afterwards is in turbulent condition, and measuring accuracy is caused still to have large error.In the prior art under normal circumstances in order to protect
Card liquid be in laminar condition, to be arranged the direct current pipeline section of preceding 10D (D is caliber) 5D afterwards before and after turbine flowmeter, but due to
Use condition limitation when emptying, can not be arranged so long front and back straight pipe.Oil is directed in order to absorb turbine flowmeter
The advantage of tank car emptying overcomes because turbine flowmeter is used and bring difficulty and defect, improves entire scheme, give full play to
The advantage function of elbow and turbine flowmeter, the utility model are particularly provided with level-one in the outlet pipe section of elbow body
Rectifier is forced liquid becoming laminar flow from turbulent flow, and further adds second level rectifier in the inlet of turbine flowmeter
It is rectified again, error is generated with flow perturbation to avoid tank truck straight pipe oil liquid is discontented, to promote Unloading Metering dress
The measuring accuracy set.Finally, the utility model error that air-flow drive rotor generates in order to prevent, is provided with liquid detection sensing
Device, so as to the just driving flowmeter metering when liquid detection sensor detects the signal that liquid flows through.
Separately having, the turbine assembly mounting structure of the utility model also has the very huge beneficial effect of its substantive distinguishing features,
On the one hand, the utility model by rotor assembly by special shunting gusset array at bracket be supported and fixed in measuring chute,
While being easily installed and simplify structure, but also fluid better flows through rotor assembly, play the role of shunting, support, and
End face bearing and sliding bearing are set gradually in the bracket, have been perfectly matched fortune of the rotor assembly when fluid impact rotates
Dynamic state, so that rotor rotation is more flexible reliable, abrasion is smaller, and the service life is longer, so that it is guaranteed that metering unit is accurate
Reliability.On the other hand, a special vacuum brake is provided at the outlet end of metering unit, which can
To prevent the vacuum environment in metering unit exit from generating, thus during being effectively prevented oil product inflow buried tank, in pipe
Rear end liquid generates siphonage to front end liquid when diameter becomes larger, and is inherently eliminated air return and does to measuring accuracy generation
It disturbs, and the vacuum brake structure in the utility model is simple, compact, convenient for assembly and disassembly, to flowmeter after cooperating with rotor assembly
The measuring accuracy of measuring appratus greatly facilitates effect.
Detailed description of the invention
Fig. 1 is current emptying schematic diagram.
Fig. 2 is the external structure schematic diagram of the utility model.
The longitudinal sectional view of Fig. 3 the utility model.
Fig. 4 is the longitudinal sectional view of the metering unit of the utility model.
Fig. 5 is the explosive view of metering unit.
Fig. 6 is the mounting structure schematic diagram of rotor assembly and bracket.
Fig. 7 is the explosive view of structure shown in Fig. 6.
Fig. 8 is a kind of structural schematic diagram of rotor assembly.
Fig. 9 is using the signal acquisition schematic diagram shown in Fig. 8 when rotor assembly.
Figure 10 is the cross-sectional view of pressure regulating device.
Figure 11 is the explosive view of pressure regulating device.
Figure 12 is the structural schematic diagram at elbow component.
Figure 13 is the connection schematic diagram of the utility model and tank truck.
Figure 14 is rectifier structure schematic diagram.
Scheme of installation when Figure 15 is the utility model standard installation with a pair of of liquid detection sensor.
Figure 16 is scheme of installation when the utility model installation with a pair of of liquid detection sensor has offset.
Figure 17 is the different correlation radius schematic diagrames of same blade.
Figure 18 is the motion analysis figure at different correlation radiuses.
Figure 19 is the relation schematic diagram of the spiral angle β and radius R at different correlation radiuses.
Figure 20 be α=β when flow direction at correlation radius with helical angle relation schematic diagram.
Figure 21 be because incidence angle there are due to influence schematic diagram to turbine surfaces flow field.
The structural schematic diagram that Figure 22 is blade when being double lead structures.
Component label instructions: quick-release connector 1, entrance pipeline section 2, outlet pipe section 3, level-one rectifier 4, elastic spring 5, liquid
Detect pipeline section 6, liquid detection sensor 7, metering unit 8, mandrel 9, blade 10, the first magnet steel 11, the second magnet steel 12, measuring chute
14, rotor assembly 15, bracket 16, rectifier 17, bearing block 18, sliding bearing 19, shaft 20, end face bearing 21, oil filler point 22,
Steel ring 23 shunts gusset 24, lug plate 2401, trapezoidal plate 2402, notch 25, cylindrical portion 26, body 27, subchannel 2701, filter
Dirt net 28, valve seat 29, bulb 30, gasket 31, sliding sleeve 32, valve rod 33, cylindrical spring 34, guide ring 35, circlip 36,
Second level rectifier 37, turbine flowmeter 38, electronic watch head 39, window assembly 40, F type quick-release connector 41, handle 42, outside measuring room
Shell 43, flanged plate structure 44, bottle lid-like 45, signal transducer 46, temperature sensor 47.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
The utility model is described in further detail with reference to the accompanying drawings and examples:
As shown in Fig. 2-4, one kind unloading oil flowmeter comprising the fast changing-over being connected with the horizontal pipeline of tank truck bottom
First 1 and the metering unit 8 that is attached thereto；The metering unit 8 is whole to be embedded in metering chamber enclosure 43, the metering unit 8
Preferably turbine flowmeter 38, compact-sized, take up space small, measuring accuracy is higher.The metering unit 8 is whole to be embedded in meter
It measures in chamber enclosure 43, this is because the variation of device internal pressure will lead to the volume of related liquid because compression influences to change
Become, due to the change in calibrating with Fluid pressure when operation, the aggregating characteristic of traditional turbine flowmeter 38 can be changed, this
Sample will result in the inaccuracy of measurement, and the flowmeter of the present embodiment uses vessel design, that is, as measuring chute component
Turbine flowmeter 38, which can be used as a separate unit, to be existed, so as to so that the influence of any change in fluid pressure is reduced to zero.
In fact, the pressure of measuring section and the pressure of surfaces externally and internally are identical in device, therefore this measuring section will not be by fluid pressure
The influence of power and change.
As shown in Fig. 4-7, the above-mentioned metering unit 8 of the present embodiment includes measuring chute 14 and is mounted in measuring chute 14
Rotor assembly 15, further includes two secondary supports 16 being similarly installed in measuring chute 14, which is located at described turn
15 both ends of sub-component, the bracket 16 includes columned cylindrical portion 26, with cylindrical portion 26 on the cylindrical surface of cylindrical portion 26
Rounded centered on the center of circle to be connected with several shunting gussets 24 in array, preferably preferably 4 pieces shunting 24 arrays of gusset settings are described
The outer ledge for shunting gusset 24 connects with 14 inner wall of measuring chute and is fixed in measuring chute 14.In the cylindrical portion 26 towards rotor
One end end face of component 15 is embedded with bearing block 18, by towards being successively embedded with end face in the axial direction of rotor assembly 15 in bearing block 18
Bearing 21 and sliding bearing 19,20 end of shaft of the rotor assembly 15 pass through after the sliding bearing 19 with end face bearing 21
End face connect；End face bearing 21 and sliding bearing 19 herein can be used graphite and be made, and hardness is high, and self-lubricating effect is good,
So that rotor assembly 15 rotates more flexible, end face bearing 21, which limits, goes to the axial movement value of component, and sliding bearing 19 with
The cooperation of end face bearing 21 flexibly will not generate violent oscillation again so that rotor rotates at work, adopt relative to more existing
There is apparent above-mentioned advantage with the mounting means of deep groove ball bearing.Two-stage cylinder is additionally provided in the arrival end of the measuring chute 14
The rectifier 17 in honeycomb structure of shape, 17 face of rectifier are located at the bracket 16 of arrival end, the rectifier 17
Longitudinal to be equipped with several thin through-holes uniformly to gather, rectification effect is fabulous, turbulent flow effectively can be adjusted to laminar flow, for rectifier
17 installation may be selected to install one section of round pipe additional in 14 arrival end of measuring chute, or measuring chute 14 lengthened, direct compartment of terrain peace
At the arrival end of measuring chute 14.
In addition, the present embodiment is equipped with a vacuum brake also at the outlet end of the metering unit 8, such as Figure 10-11
Shown, the vacuum brake includes body 27, and the body 27 is substantially cylindrical, be equipped in the body 27 airflow channel and
Mounting hole, the mounting hole are the aperture minimum of stepped hole and top.The airflow channel is that three sub-channels 2701 are successively first
Tail is connected and is in the air flow channel of Π type, and what which can be formation itself is the flow passage route of Π type, is also possible to one
The cavity being connected with outside atmosphere with Π type section.The both ends of the airflow channel are communicated with the atmosphere, the mounting hole
It is positioned vertically between the subchannel 2701 that the two of the airflow channel is vertically arranged, and the top of mounting hole and airflow channel
Horizontal sub-passages 2701 are connected to, and bottom end is connected to the outlet end of the metering unit 8, so that airflow channel passes through mounting hole
It can wait for an opportunity to be connected to the outlet end of metering unit 8.
The present embodiment is equipped with the pressure regulating device for adjusting inside and outside air pressure balance in the mounting hole, i.e., under certain condition
Breaking vacuum environment.The pressure regulating device from top to bottom successively includes valve seat 29, sliding sleeve 32, guide ring 35, and valve seat 29 is embedded in peace
The top in hole is filled, from top to bottom there is the cylindrical hole for abutting each other connection and conical bore and conical bore big end on the axis of valve seat 29
Downward, cylindrical hole is connected to the horizontal sub-passages 2701, and the guide ring 35 is fixedly mounted in the lower part in mounting hole, is led
At the lower port being preferably coaxially embedded in mounting hole to the outer wall of ring 35.The guide ring 35 is stretched out in 33 bottom end of valve rod of spool,
Bulb 30 at the top of it is located at the portlet of the conical bore, so that spool is similar to rivet-like structure.In the guide ring
Cylindrical spring 34 is cased on valve rod 33 between 35 and sliding sleeve 32, described 34 one end of cylindrical spring connects with 35 end face of guide ring,
To be squeezed cylindrical spring 34 upward by guide ring 35, the other end of cylindrical spring 34 therewith jacks up sliding sleeve 32 upward, and
So that the gasket 31 being sandwiched between bulb 30 and sliding sleeve 32 also moves up so that the periphery that encloses of gasket 31 with
The inner wall close proximity of the conical bore realizes sealing；Also there is connection 8 outlet end of metering unit on the guide ring 35 and lead
Perforation to cavity between ring 35 and valve seat 29.
When external and internal pressure is atmospheric pressure, as described above, the court that the sealing of vacuum brake is provided by cylindrical spring 34
On elastic force realize；When there is liquid positive pressure in inside, fluid pressure squeezes gasket 31, is further formed reliable close
Envelope；When having negative pressures inside metering unit 8, precompression more than cylindrical spring 34 itself to gasket 31 upward, then valve
Core moves down under atmospheric pressure promotion, and gasket 31 is driven to separate with conical bore inner wall, so that ambient atmosphere enters inside,
Prevent vacuum environment from being formed.Originally it is that embodiment uses valve seat 29 for conical bore, circular cone positioning is formed with spool, so that vacuum breaking
Device open every time after can parking position accuracy, and gasket 31 is folded between the bulb 30 at the top of sliding sleeve 32 and spool, can be with
So that gasket 31 preferably cooperatively forms sealing with cylindrical spring 34 convenient for assembly and disassembly replacement.
The quick-release connector 1 is Type B quick-release connector and its outlet end is connected with elbow component, the outlet of the elbow component
End is connected with liquid detection pipeline section 6；Wherein, the elbow component includes elbow body and level-one rectifier 4, and elbow body includes
The entrance pipeline section 2 and outlet pipe section 3 being connected with each other, angle between two pipeline sections enter in metering unit 8 it when meeting fluid
Preceding is in full pipe condition.Above-mentioned entrance pipeline section 2 is connected with the quick-release connector 1, and outlet pipe section 3 and the liquid detect pipeline section 6
Entrance connects, and the level-one rectifier 4 is installed in outlet pipe section 3；It is equipped with inside the liquid detection pipeline section 6 for detecting
The liquid detection sensor 7 for whether thering is liquid to flow through.
When in use, as shown in figure 13, the entrance pipeline section 2 of elbow body and the horizontal straight tube section level of tank truck is right
It connects, whether the fluid either in horizontal straight tube section is full of whole pipeline at this time, can be because of the bending downward of elbow body
The architectural characteristic of proper angle, so that the fluid in elbow body outlet pipe section 3 is filled, to avoid because of non-full pipe state
The measurement error of lower metering unit 8, and the turbulent flow generated for elbow to the disturbance of fluid then can be by one in elbow component
Become stable laminar flow after grade rectifier 4 is rectified.
It is docked with 43 arrival end of metering chamber enclosure and liquid is made to detect pipeline section in the liquid detection 6 outlet end of pipeline section
The arrival end coaxial communication of 6 pore and the turbine flowmeter 38, the liquid detection pipeline section 6 and turbine flowmeter 38 it
Between be additionally provided with Rectigon section, the Rectigon section be embedded in metering chamber enclosure 43 in and the entrance with turbine flowmeter 38
End is coaxial docking, and is embedded with second level rectifier 37 in Rectigon section, second level rectifier 37 and the level-one rectifier 4 are coaxial
Alignment promotes commutating character.
There are the window assembly 40 that can be had an X-rayed, the window assembly in the outlet end abutting joint of the metering chamber enclosure 43
40 middle parts are straight pipe, and one of straight pipe is the hardened structure 44 of square flange, the other end circular bottle cap tapped in inner wall
Shape structure 45, the straight pipe are mounted on sealing ring on the inner wall at its both ends, and annular tube shaped perspective part is inserted into straight tube
It in section and squeezes two sealing rings and realizes sealed connection, to observe fluid flow state, the failure of flowmeter is done manually
Judgement.The window assembly 40 is socketed on F type quick-release connector 41 away from the threaded one end of perspective part, the F type quick-release connector
41 and Type B quick-release connector that is, F type joint and Type B connector, it can directly buy in the market, for connecting corresponding pipeline when emptying
It is reliable rapidly.
In order to obtain better effect, it is preferable that for the mounting structure of rotor assembly, above-mentioned shunting gusset 24 includes equal
For the trapezoidal plate 2402 and lug plate 2401 of slab construction, the trapezoidal plate 2402 is at right-angled trapezium shape, 2402 liang of waists of trapezoidal plate
In inclination waist be arranged towards 15 one end of rotor assembly and by being tilted down in the axial direction towards rotor assembly 15, the lug plate
2401 are integrally connected to another waist of trapezoidal plate 2402 at the right-angled apices of 14 port edge of measuring chute, so that convex
Otic placode 2401 and trapezoidal plate 2402 are away from one rectangular-shaped step of that bottom edge of cylindrical portion 26 formation.The measuring chute 14 is
Cylindrical tubular structure, and its both ends is respectively fitted on the step so that two secondary supports 16 are mounted on being respectively embedded into formula
The both ends of measuring chute 14.The structure makes bracket 16 have comparable knot under the premise of the smooth inflow and outflow of guarantee fluid
Structure intensity ensure that the stability of the installation of rotor assembly 15 and work, provide the foundation for accurate metering.For improving performance, institute
It states and offers a notch 25 at the right-angle corner of step, so that precision is more preferably processed and guaranteed at the right-angle surface of step, thus
When preventing from the right angle electrical of the step being in non-standard right-angle surface because of mismachining tolerance, match with the port edge face of measuring chute 14
Conjunction is not close, causes bracket 16 to install rear axle line offset, causes the offset of 15 mounting axis of rotor assembly.The shunting gusset 24
Bottom edge and cylindrical portion 26 it is axial parallel, promote its structural strength and guide the performance of fluid process.As shown in fig. 7, described
Sliding bearing 19 be annular structure, the end face bearing 21 be one end be in plane, the spherical cylindrical structure of the other end, and its
The cambered surface culminating point of sphere end connects with the end of the shaft 20, which better assures that the flexible of rotor assembly 15
Reliability.Furthermore it is preferred that the axis of the cylindrical portion 26 is equipped with oil filler point 22, the oil filler point 22 and the bearing block
Conduction hole coaxial communication on 18 axis, in order to oil injecting lubricating.
The rotor assembly of the present embodiment, optimal selection are turbine assembly, i.e., aforementioned preferred turbine flowmeter, such as Fig. 8 institute
Show, including mandrel 9 and the blade being helically arranged along its length on mandrel 9 10；The helical blade 10 is equipped with two
And two blades 10 is oppositely oriented, two blades 10 are separately positioned on the two opposite sides of mandrel 9.It is leaned on every blade 10
The first magnet steel 11 is embedded at both ends respectively, the second magnet steel 12, institute are also embedded between two first magnet steel 11 on every blade 10
One end polarity for having the first magnet steel 11 towards 10 outside of blade is identical, one end polarity phase of two second magnet steel 12 towards 10 outside of blade
Instead.In the present embodiment, there are 3 magnet steel on each blade 10 of turbine assembly, two blades 10 amount to 6 magnet steel, blade 10
Upper 4 magnet steel polarity by outer end are identical, and intermediate 2 magnet steel polarity are on the contrary, when in use, outer end magnet steel center is directed at flowmeter
Signal transducer (not shown) on shell, for the output of metrical pulse, intermediate 2 magnet steel are used for turbine rotation direction
Determine, prevents turbine assembly reversion when liquid reflux from causing to count, the sensor that intermediate magnet steel signal detection uses preferably is selected as magnetic
Tunnel sensor is hindered, is output high level when detecting that polarity is N variation, exports low level when polarity changes from S, rotate
When walking direction, as shown in figure 9, being detected as in high level period when rotating forward in M signal, right end exports pulse advancing
Pulse is exported in left end, when rotating backward, left end exports pulse advancing and exports pulse in right end, accurately determines turbine group with this
Whether part inverts (oil product reflux), so that the data information of reversion not to be included within the data area of metering.The turbine assembly
Small in size, light weight is easy to rotate, using two derotations to blade as rotor, the set-up mode of magnet steel not only can be with
Accurately detect that the rotary speed information of turbine with detection flows information, can also realize that positive and negative rotation detects, after emptying
Fluid reflux data exclude except Unloading Metering data so that metering is more accurate, and make from structure turbine assembly with
The contact resistance of fluid is smaller, greatly promotes service life and reliability, in conjunction with the above-mentioned mounting structure of rotor assembly, can make
Obtaining entire metering units has high measuring accuracy and reliability.Going back lock ring in the outside of the bracket 16 has steel ring
23, the steel ring 23 is the round steel ring of non-close and fixes from the edge for being radially inserted into shunting gusset 24 of bracket 16,
All shunting gussets 24 are linked together, so that the structure of entire bracket 16 is more stable.
In the vacuum brake of the present embodiment, the guide ring 35 is annular in shape, offers on its annulus end face described
Perforation；The card slot installed for check ring clamping is equipped on the inner wall of the mounting hole, after check ring is caught in the card slot
By holding out against the cylindrical spring 34 upwards to the thrust upward of guide ring 35.Check ring take up space it is small, installation convenience, fit
Share in the installation of guiding annulus herein and its to the axially position of cylindrical spring 34, will not to body 27 and flow components it
Between communication port cause excessively to block so that ventilation it is smooth.It is additionally provided at the top of the valve seat 29 by the small of the conical bore
The dirt filtrating screen 28 that port covers all, so that preventing dust dregs from entering metering unit 8 when exchanging air-flow with the external world
It is interior.The body 27 and 8 thread connection of metering unit, convenient for assembly and disassembly.The body 27 be equipped with two air flow channels, two
The cross-shaped setting of air flow channel；Alternatively, the airflow channel includes the circular cavity being located at the top of mounting hole, it is described
Circular cavity is surrounded by four cylindrical holes communicated therewith.These design structures can obtain preferable air-flow exchange effect
Fruit.
Preferentially, the electronic watch head 39 of display flow information, the electronic watch head are also equipped on the metering chamber enclosure 43
39 obtain flow information by two supported signal sensors 46 being mounted in metering room housing, and the signal transducer 46 is installed
Position should make turbine (rotor assembly) rotate when, two first magnet steel 11 of turbine surfaces can go to therewith one by one face it
Place, so that signal when signal transducer 46 is passed through by detecting first magnet steel 11 obtains flow information, in this way, signal is examined
It surveys and uses two paths of signals, can mutually calibrate, fully ensure that measuring accuracy.Correspondingly, the second magnet steel 12 also has and is corresponding to it
A supported signal sensor 46, detect positive and negative rotation with corresponding.And to meet client's V20 hair oil, can also to the liquid flowed through into
Trip temperature compensation, so originally unloading oil flowmeter is also equipped with pt1000 temperature sensor 47 in the top of the outlet end of measuring chute 14,
To be compensated in temperature change to the data on flows of electronic watch head detection, it is ensured that measuring accuracy.Preferentially, the straight tube
Several waist holes are equipped with along its circumferencial direction on the tube wall of section, all waist holes are rounded as the center of circle using the point on the axis of straight pipe
Array, all waist holes are blocked by the perspective part, to the protection of pipeline when not only to ensure that fluid flows through pipeline section, but also can be straight
See ground observation fluid state.Further to promote effect, 3 middle part of outlet pipe section of the elbow body is fixedly cased with one and encloses
Plate, the edge of coaming plate are equipped with several towards the strip fin plate of outside protrusion, two of them fin plate 90 degree and its folder each other
The angular bisector at angle is located on vertical direction, and a hand for deviating from elbow component is vertically and fixedly provided on the two of them fin plate
Handle 42 allows entire flow device to realize its portability by gripping handle 42.
Preferentially, one end of the level-one rectifier 4 towards the entrance pipeline section 2 is covered with the filter screen for filtering, with
Just the rubbish such as particle, the dross in fluid are filtered out, prevents level-one rectifier 4 from blocking, also metering unit 8 (flowmeter) is played
Protective effect.
Preferentially, the structure of firsts and seconds rectifier is as shown in figure 14, using etc. the cellular stainless steel material in six sides,
It selects the aperture of hexagon to be not more than 4.8mm according to detectability, is proof strength, wall thickness is not less than 0.1mm, global shape
It is processed as circle, elbow component is packed into, is fixed with elastic spring 5, fabulous rectification effect, and intensity and peace can be obtained
Dress unfailing performance attains full and complete satisfaction.
Further, the angle between the entrance pipeline section 2 and outlet pipe section 3 of the elbow body is 10~30 degree, i.e., two
Acute angle after the intersection of pipeline section axis, the elbow modular construction strength and stability under the angle is more preferable, is conducive to fluid
Disturb small as far as possible, to be especially more suitable at most of RTC unloading straight pipe at present abutting joint.
Further, the liquid detection sensor 7 is equipped with a pair, and two liquid detection sensors 7 are opposite in the horizontal plane
Why setting, be arranged two liquid detection sensors 7 herein, be because in installation flowmeter manually there are certain error,
So checking liquid signal using two sensors, two sensors are opposite to be in a horizontal position, as long as there is one to have signal, that
Meaning that in pipeline has liquid to pass through.As shown in Figure 15-16, if the sensor on the right side in this two width figure is removed, then
In Figure 15, sensor can be contacted with liquid, and if entire oil discharge metering installation rotation offset is certain small when installing
Angle becomes state shown in Figure 16, it is then clear that the sensor in left side can not be contacted with liquid at this time, but this
Really have liquid process in Shi Guandao, i.e., can generate measurement error, if however be relatively mounted with two, then no matter installing
When rotation offset how many degree, all at least having a sensor can contact with liquid, correctly feedback signal.The level-one is whole
Stream device 4 is installed on the intersection by itself and entrance pipeline section 2 on outlet pipe section 3, preferably to play rectified action earlier.Institute
Stating the angle between the entrance pipeline section 2 of elbow body and outlet pipe section 3 should ensure that the liquid level flowed into the entrance pipeline section 2
The level-one rectifier 4 is flooded completely, that is, as shown in figure 13, above-mentioned liquid level is pacified not less than the level-one rectifier 4
Highest vertex O point when in outlet pipe section 3 rectifies more sufficiently at this time, and fluid flow state is even more ideal.
In addition, being directed to the turbine assembly 38 of metering unit 8, it is preferable that its blade is double leads, and every blade wraps
Include the measuring section being linked together and stress section, wherein measuring section lead is P1, and axial length L1, stress section lead is P2, axis
It is L2 to length, then needs P1 > P2, L1 > L2, the design considerations for meeting the Parameter Conditions is as follows:
Different correlation radiuses on one blade of turbine assembly are as shown in figure 17: the first radius (R/R0=0.2) is close
Rotor hub；Centre of second radius in width of blade direction；The last one radius is in outer dia rim faces.
Fluid mobility status at each radius passes through the mean flow rate V (such as giving a definition) in pipeline
With the tangential velocity R ω (being defined by a radius and an angular speed) of certain point, in available rotation
The spot speed V of liquid around a certain solid pointR, VRIn corresponding radius R/R0Upper, V as shown in figure 18 with R ω and V relationshipRWith
Angle between V:
As shown in figure 19, by structure and definition, the spiral angle β of a helical blades is related with radius R, β and half
The relational expression of diameter R and lead P are as follows:
As shown in figure 20, as α=β, the incidence angle between blade surface and fluid on any radius is zero.
In fact, since the resistances such as liquid resistance, mechanical friction exist, to reach such perfect condition can not,
For flow direction and helical turbine blade in this way there are incidence angle, the presence of incidence angle will make fluid generate whirlpool in blade surface
Stream generates interference to measuring accuracy, and interference is as shown in figure 21.
To solve this problem, as shown in figure 22: blade is divided into measurement using double leads by the blade construction of turbine assembly
Section and stress section two parts, measuring section lead are P1, and axial length L1, stress section lead is P2, axial length L2.
The design of stress section is in order to offset the resistance being subject to during turbine rotation, P1 > P2 and L1 > L2, thus
It ensure that the perfect condition of Figure 20 is realized in the flow field on measuring section, stress section is in fluid outlet side, although there is also enter for stress section
Firing angle, but L2 is shorter, and the whirlpool of generation just releases metering region by leading portion liquid quickly before also not influencing turbine, right in this way
The influence of turbine can be ignored.
In specific production, the spiral shaped edges of blade 10 where the first magnet steel 11 and the second magnet steel 12 are installed in respectively
On face, magnet steel signal is received in order to install and be conducive to sensor.And second magnet steel 12 is mounted on the axial length of blade 10
The middle part on direction is spent, can equally be easily installed and is conducive to sensor reception magnet steel signal.The blade 10 and mandrel 9 one
It is body formed, there is lesser resistance when promoting the integral strength stability of entire turbine assembly and contacting with liquid.The mandrel 9
Both ends be coaxially embedded with a shaft respectively, one end of the shaft is embedded in 9 end face of mandrel, and shaft installation end 13 stretches out blade
10 end faces, in order to be mounted in corresponding measuring room, simultaneously because end is easiest to wear, it is therefore, this dismountable
Shaft is also convenient for later maintenance replacement.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (10)
1. one kind unloads oil flowmeter, including the quick-release connector being connected with the horizontal pipeline of tank truck bottom and the metering being attached thereto
Component；It is characterized in that, the metering unit is integrally embedded in metering chamber enclosure, the metering unit includes measuring chute and peace
Rotor assembly in measuring chute and two secondary supports being similarly installed in measuring chute, two secondary support are located at described
Rotor assembly both ends, the bracket include columned cylindrical portion, during the center of circle on the cylindrical surface of cylindrical portion with cylindrical portion is
The heart is rounded to be connected with several shunting gussets in array, and the outer ledge for shunting gusset connects with measuring chute inner wall and fixed
In in measuring chute；It is embedded with bearing block in one end end face of the cylindrical portion towards rotor assembly, is pressed in bearing block towards rotor set
End face bearing and sliding bearing are successively embedded in the axial direction of part, after the roller end of the rotor assembly passes through the sliding bearing
Connect with the end face of end face bearing；The columned rectification in honeycomb structure of two-stage is additionally provided in the arrival end of the measuring chute
Device, the rectifier face are located at the bracket of arrival end；
A vacuum brake is equipped at the outlet end of the metering unit, the vacuum brake includes body, the machine
It is equipped with airflow channel and mounting hole in vivo, wherein the airflow channel is three sub-channels successively join end to end and are in Π type
The both ends of air flow channel, the airflow channel are communicated with the atmosphere, and it is two perpendicular to be positioned vertically within the airflow channel for the mounting hole
Between the subchannel being directly arranged, and the top of mounting hole is connected to the horizontal sub-passages of airflow channel, bottom end and the metering
The outlet end of component is connected to；Pressure regulating device is installed in the mounting hole, the pressure regulating device from top to bottom successively includes valve
Seat, sliding sleeve, guide ring, valve seat are embedded in the top of mounting hole, from top to bottom have the circle for abutting each other connection on the axis of valve seat
Post holes and conical bore and conical bore big end is downward, cylindrical hole is connected to the horizontal sub-passages, and the guide ring is fixedly mounted
Lower part in mounting hole；The guide ring is stretched out in the valve rod bottom end of spool, at the top of bulb be located at the conical bore
At portlet, cylindrical spring, described cylindrical spring one end and guide ring are cased on the valve rod between the guide ring and sliding sleeve
End face connects, the other end sliding sleeve is jacked up upward and make the periphery for the gasket being sandwiched between bulb and sliding sleeve with it is described
The inner wall close proximity of conical bore；Also have on the guide ring empty between connection metering unit outlet end and guide ring and valve seat
The perforation of chamber；
It is connected with elbow component in the quick-release connector outlet end, the outlet end of the elbow component is connected with liquid detection pipes
Section；Wherein, the elbow component includes elbow body and level-one rectifier, elbow body include the entrance pipeline section being connected with each other and
Outlet pipe section, entrance pipeline section are connected with the quick-release connector, and outlet pipe section connects with the entrance of liquid detection pipeline section, described
Level-one rectifier is installed in outlet pipe section；The liquid detection inner tube segment is equipped with for detecting whether what liquid flowed through
Liquid detection sensor；It is docked with measuring room housing entry end and liquid is detected in liquid detection pipeline section outlet end
The pore of pipeline section and the arrival end coaxial communication of turbine flowmeter are detected in the liquid and are also set between pipeline section and turbine flowmeter
There is Rectigon section, which is embedded in metering chamber enclosure and coaxially right with the arrival end of turbine flowmeter
It connects, is embedded with second level rectifier, second level rectifier and the level-one rectifier co-axially align in Rectigon section；
There is the window assembly that can be had an X-rayed in the outlet end abutting joint of the metering chamber enclosure, is straight in the middle part of the window assembly
Pipeline section, one of straight pipe are the hardened structure of square flange, and the other end round bottle lid-like tapped in inner wall is described straight
Pipeline section is mounted on sealing ring on the inner wall at its both ends, and annular tube shaped perspective part insertion straight pipe is interior and squeezes described in two
Sealing ring and realize sealed connection；The window assembly is socketed on F type quick-release connector away from the threaded one end of perspective part.
2. unloading oil flowmeter according to claim 1, it is characterised in that: the shunting gusset includes the ladder for being slab construction
Shape plate and lug plate, at right-angled trapezium shape, the inclination waist in two waist of trapezoidal plate is arranged the trapezoidal plate towards rotor assembly one end
And by tilting down in the axial direction towards rotor assembly, the lug plate is integrally connected to another waist of trapezoidal plate by metering
At the right-angled apices of storehouse port edge, so that lug plate is rectangular-shaped away from that bottom edge of cylindrical portion formation one with trapezoidal plate
Step；The measuring chute is cylindrical tubular structure, and its both ends is respectively fitted on the step so that two secondary supports
It is mounted on the both ends of measuring chute with being respectively embedded into formula.
3. unloading oil flowmeter according to claim 1, it is characterised in that: the rotor assembly is turbine assembly, the turbine
Component includes mandrel and the blade being helically arranged along its length on mandrel；The helical blade is equipped with two and two
Blade it is oppositely oriented, two blades are separately positioned on the two opposite sides of mandrel；Difference is embedding at its both ends on every blade
There is the first magnet steel, the second magnet steel is also embedded between two first magnet steel on every blade, all first magnet steel are towards blade outboard
One end polarity it is identical, one end polarity of two second magnet steel towards blade outboard is opposite.
4. unloading oil flowmeter according to claim 3, it is characterised in that: the blade is double leads, and every blade is equal
Including the measuring section being linked together and stress section, wherein measuring section lead is P1, and axial length L1, stress section lead is P2,
Axial length is L2, P1 > P2, L1 > L2.
5. unloading oil flowmeter according to claim 1, it is characterised in that: be additionally provided at the top of the valve seat by the circular cone
The dirt filtrating screen that the portlet in hole covers all；One end of the level-one rectifier towards the entrance pipeline section is covered with for filtering
Filter screen.
6. unloading oil flowmeter according to claim 3, it is characterised in that: be also equipped with display flow letter on the metering chamber enclosure
The electronic watch head of breath, the electronic watch head are believed by two supported signal sensors being mounted in metering room housing to obtain flow
The position of breath, the signal transducer installation should make when turbine rotates, and two first magnet steel can respectively correspond two letters
Number sensor, second magnet steel also individually correspond to a supported signal sensor.
7. unloading oil flowmeter according to claim 1, it is characterised in that: set on the tube wall of the straight pipe along its circumferencial direction
There are several waist holes, all waist holes are using the point on the axis of straight pipe as the rounded array in the center of circle, and all waist holes are by described
Visual element blocks.
8. unloading oil flowmeter according to claim 1, it is characterised in that: all rectifiers are to wait hexagonal honeycombs shape structure；
The aperture of the hexagonal honeycomb shape structure is not more than 4.8mm, and wall thickness is not in 0.1mm.
9. unloading oil flowmeter according to claim 1, it is characterised in that: the entrance pipeline section and outlet pipe section of the elbow body
Between angle be 10~30 degree.
10. unloading oil flowmeter according to claim 1, it is characterised in that: the liquid detection sensor is equipped with a pair, two liquid
Body detection sensor is oppositely arranged in the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822186293.3U CN209247077U (en) | 2018-12-25 | 2018-12-25 | One kind unloading oil flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822186293.3U CN209247077U (en) | 2018-12-25 | 2018-12-25 | One kind unloading oil flowmeter |
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| CN209247077U true CN209247077U (en) | 2019-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489740A (en) * | 2018-12-25 | 2019-03-19 | 重庆耐德工业股份有限公司 | Unload oil flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489740A (en) * | 2018-12-25 | 2019-03-19 | 重庆耐德工业股份有限公司 | Unload oil flowmeter |
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