CN103017831B - Suspended body flowmeter with limiting value switch - Google Patents
Suspended body flowmeter with limiting value switch Download PDFInfo
- Publication number
- CN103017831B CN103017831B CN201210354013.XA CN201210354013A CN103017831B CN 103017831 B CN103017831 B CN 103017831B CN 201210354013 A CN201210354013 A CN 201210354013A CN 103017831 B CN103017831 B CN 103017831B
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- Prior art keywords
- flow
- toucher
- body flowmeter
- suspended body
- suspended
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/22—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
- G01F1/24—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters with magnetic or electric coupling to the indicating device
Abstract
Introduce a kind of suspended body flowmeter for measuring the fluid flow for flowing through measurement pipe（1）, have：The suspended substance that can be deviated by fluid flows being arranged in measurement pipe；With indicator（3）For detect suspended substance offset and the offset is converted into indicator（3）Offset of corresponding size measurement converter（2）；At least one toucher（5）It is switched at least one limiting value（9）, wherein toucher（5）With indicator（3）Coupling, when reaching capacity flow, toucher（5）Touch limiting value switch（9）.Limiting value switchs（9）It is reed switch, is achieved in a kind of suspended body flowmeter（1）, complexity reduction, construction cost and manufacture cost reduce, and then cost also reduces.
Description
Technical field
The present invention relates to a kind of suspended body flowmeters for measuring the fluid flow for flowing through measurement pipe, have：Setting
The suspended substance that can be deviated by fluid flows in measurement pipe；The offset for detecting suspended substance with indicator simultaneously will
The offset is converted into the measurement converter of the offset of corresponding size of indicator；At least one toucher and at least one limiting value
Switch, wherein toucher are coupled with indicator, and when reaching capacity flow, toucher touches limiting value switch.
Background technology
The suspended body flowmeter of the type is used for measurement of fluid flow since it is simple and durable in numerous applications,
Fluid may be gas or liquid.The measuring principle of suspended body flowmeter is based on the inclined of the suspended substance deviated by streaming flow
It moves, wherein deriving outflow by this offset.It is being measured in general, suspended substance is arranged along the translatable offset of measurement pipe longitudinal axis
The interior cross section of Guan Zhong, measurement pipe broaden along the offset area of suspended substance in the flow direction of fluid.In the mounted state, it measures
The longitudinal axis of pipe, and then the axis of movement of also suspended substance are often parallel to the action direction arrangement of the earth gravitational field so that stream
Body flow direction substantially with the action direction of the earth gravitational field on the contrary, that is, measurement pipe flowed through from bottom to top.The gravity of suspended substance
Proportional to the difference between suspension volume density and fluid density-static-buoyancy and be applied on suspended substance-moves
State-mobilization force works on the contrary., it is obvious that fluid density is necessarily less than suspension volume density, this is because otherwise
Words, even if there be no flowing, suspended substance can also be offset from initial position.If the sum of buoyancy and mobilization force have been more than gravity,
Suspended substance will be offset from initial position on the contrary with the action direction of the earth gravitational field.With the increasing of suspended substance degrees of offset
Greatly, the interval area in measurement pipe between cross section and suspended substance increases, so that the mobilization force being applied on suspended substance subtracts
It is small.Suspended substance degrees of offset persistently increases, until the sum of buoyancy and mobilization force compensate for gravity.The suspension generated in dynamic balance
Solid offsetting is the measurement of flow volume stream, and quality stream can also be calculated to obtain using fluid density by the volume flow.Due to buoyancy and fluid
Density is related, and mobilization force is related to fluid Reynolds number, so depending on stream using the flow measurement that suspended substance meter carries out
Fluid through measurement pipe.
It includes measuring that the suspended body flowmeter being known from the state of the art, which has the device for being used to refer to fluid flow, the device,
Pointer and scale, the flow may be that volume flow or quality stream measure wherein measuring pointer and the axis rotationally disposed coupling
Pointer indicates the flow for flowing through measurement pipe on scale.Herein, measurement converter, which detects, is offset from rising for suspended substance
Beginning position, and this offset is converted into the corresponding angle of axis, thus axis is also called indicator.Using setting in suspended substance
In permanent magnet detect the offset of suspended substance, and be converted into the corresponding angle of axis, which is arranged with another rotatable
Couple to the permanent magnet magnetism on axis that ground disposes.Suspended body flowmeter is not necessarily to electric energy and can measure and indicate flow in principle,
Thus it can also work in power failure.
In order to not only when more than maximum allowable defined limit flow generate electricity limit signal, but also less than minimum permit
Generate the limit signal of electricity when defined limit flow perhaps, the suspended body flowmeter being known from the state of the art is equipped with that there are two poles
Limit value switchs and two analysis circuits.These limit switches are the close switches of induction type, are designed to the starting of induction type flute profile
Device（Schlitzinitiator）.Induction type shakes close to the oscillator that switch includes the electricity with coil, wherein flowing through coil
It swings in the predetermined region of peripheral space of the circuit in induction type close to around switching and generates alternation fringe magnetic field.Flute profile starter
Alternation scattered field substantially extends on the slot being set in flute profile starter housing.
Toucher with the axis coupling as indicator is the flakelet made from conductive material（Fahne）.Flakelet with
Two flute profile starters are suitably arranged each other so that under axis correspondingly rotation situation, flakelet moves through flute profile starting
The slot of device.If flow is close to one of two limit flows, such as close to maximum allowable limit flow, flakelet will
Correspondingly close to the slot of flute profile starter, finally it extend into slot.Alternation scattered field in slot induces vortex in flakelet,
The vortex obtains energy from oscillator, and influences to vibrate in this way.The analysis circuit detection of flute profile starter is simultaneously
The influence to oscillation is analyzed, when reaching capacity flow, analysis circuit generates the limit signal of electricity.In order to avoid flow is in the limit
Signal is allowed for when only slightly fluctuating around flow to change, and is implemented in analysis circuit sluggish（Hysterese）, thus only
The generation of ability accommodation limit signal in the maximum allowable limit flow of flow-rate ratio small a certain amount.Correspondingly make induction type flute profile
Starter is arranged at interval with flakelet, and thus the limit flow for being defined as allowing is adjusted, and limit pointer is adjusting
Limit flow afterwards indicates on scale.
Suspended body flowmeter has shell, instruction device, measurement converter is provided in the shell and with attached
The induction type flute profile starter of analysis circuit.
For generating the cost of electric limit signal when reaching capacity flow compared to the cost phase for measuring flow
When big, complexity, construction cost and manufacture cost also obviously rise, and thus bring high cost.In addition, in limit flow feelings
The limit signal that electricity is generated under condition causes not only to supply electric energy to induction type flute profile starter, but also supplies electric energy to analysis circuit.
The suspended substance of suspended body flowmeter is equipped with permanent magnet, in the measurement pipe of this suspended body flowmeter, for a long time with
It is switched as limiting value to be equipped with reed switch except aforementioned shell.This reed switch directly passes through the permanent magnetism of suspended substance
Body is touched, and generates the limit signal of electricity in this way, and wherein limit flow is decided by along measurement pipe axis
Reed switch position.However, compared to the detection carried out using induction type flute profile starter, this detection mode of limit flow
Cause apparent big limit flow measurement error and apparent big and then unfavorable sluggishness.
Invention content
It is an object of the present invention to introduce a kind of suspended body flowmeter, complexity reduces, construction cost and manufacture cost
Reduce, and then cause cost reduction, while the ground detection limit flow that keeps well or make moderate progress.
The suspended body flowmeter of foregoing purpose through the invention is achieved, and is primarily characterized in, and limit switch is spring
Piece switchs.Reed switch is mainly made of two elastic contact tongues that can be conductive, these contact tongues are arranged hermetically
In closed shell, and it is stacked with smaller spacing, but do not contact, they are made of ferrimagnet.If by appropriate direction
Magnetic fields to contact tongue on power be more than the elastic force of contact tongue, these contact tongues will be contacted, and be switched
It closes, otherwise switch turns on.Reed switch is inherently small sluggishness caused by ferrimagnet by contact tongue, is embodied
Waiting for that the power applied by magnetic field is more than the power for being used for keeping the state for what is turned off the switch.
The suspended body flowmeter being known from the state of the art carry induction type flute profile starter, and the present invention suspended substance flow
Meter but alternatively carries reed switch, using this suspended body flowmeter there is complexity reduction and construction cost to reduce excellent
Point this is because eliminating analysis circuit, and replaces induction type close to switch, thus also reduces with simple reed switch
Cost is manufactured, and then also reduces cost.Due to induction type close to switch on the contrary, reed switch is without supplying electric energy, so
Another advantage is that suspended body flowmeter of the invention is without supplying electric energy.
In a kind of particularly preferred design of the present invention, permanent magnet is provided on toucher.If flowing through measurement pipe
Close to limit flow, permanent magnet is applied to by the magnetic field of permanent magnet on contact tongue flow just correspondingly close to reed switch
Power increase.If flow has reached limit flow, reed switch just utilizes the power applied by magnetic field and closes.If flow is far from pole
Limit flow, the power being applied on contact tongue by magnetic field correspondingly also reduce, however reed switch is due to its sluggishness and in flow
It is just opened when differing a certain amount with limit flow.It is this in sluggishness prevent when flow within the scope of limit flow only slightly
When fluctuation reed switch and undesirable switching process.Since reed switch is closed when being touched, otherwise turn on, so
It is a kind of normally open contact.
According to a kind of particularly preferred design of replacement, toucher is made of the high material of magnetic conductivity, spatially permanent
Surely be provided with permanent magnet near reed switch direct neighbor, the magnetic field of permanent magnet passes through and the contact of contact spring switch
Tongue, reed switch are thus closed.If flowing through the flow of measurement pipe close to limit flow, toucher is just correspondingly close to reed
Switch passes through the magnetic field deformation of contact tongue since the magnetic conductivity of toucher is high.If flow has been finally reached limit flow,
It then passes through the magnetic field of contact tongue suitably to deform, and causes the corresponding force effect being applied on contact tongue so that reed is opened
It closes and opens.Since reed switch is opened when being touched, so it is a kind of normally closed interlock.It is designed to the reed of normally closed interlock
There is also advantageous sluggishnesses for switch.Simple mode may be used by the suspended body flowmeter of the present invention by normally closed interlock-reed
Switch repacks normally open contact-reed switch into, this is because two kinds of reed switch shell having the same, and two types
The toucher of the type receiving mechanism having the same for being used to indicate device.
According to another preferred design, for suspended body flowmeter equipped with instruction device, which includes measuring pointer
And scale, it is exactly toucher to measure pointer.Or measuring pointer thus can be with equipped with magnet or by the high material of magnetic conductivity
It constitutes.Toucher function is undertaken due to eliminating toucher, and by measurement pointer, therefore simplifies suspended body flowmeter.According to
The design equally may be used simple mode and repack normally closed interlock-reed switch into normally open contact-reed switch, this is
Because of the two kinds of measurement pointer receiving mechanism having the same for being used to indicate device.
In another preferred embodiment of the present invention, reed switch setting carries on auxiliary supporting body in the auxiliary
Slot hole is offered on body.The screw that auxiliary supporting body is through slot hole with a supporting body is firmly coupled, measurement converter
It is also disposed on the supporting body.The direction of slot hole is by appropriate selection so that can by between reed switch and toucher
Adjustable spacing carrys out accommodation limit flow when unclamping screw.In addition, it is provided with limit pointer on auxiliary supporting body, the limit
Pointer indicates the limit flow after adjusting on scale.It is self-evident, the suspended body flowmeter of the present invention can be given to be equipped with more
In one reed switch and more than one limit pointer.
According to another preferred embodiment, at least reed switch, toucher, measurement converter and instruction device are arranged
In one shell.This suspended body flowmeter is compact, and without supplying electric energy.
Description of the drawings
Specifically, existing a variety of different schemes can be used to improve and design the suspended body flowmeter of the present invention.To this
Referring in conjunction with attached drawing description of a preferred embodiment.Wherein：
Fig. 1 is the stereogram of the embodiment of the suspended body flowmeter of the present invention；
Fig. 2 is the exploded view of the suspended body flowmeter of Fig. 1；
Fig. 3 is the vertical view of the suspended body flowmeter of Fig. 1；With
Fig. 4 is the side view of the suspended body flowmeter of Fig. 1.
Specific implementation mode
The suspended body flowmeter 1 of the present invention is locally shown in Fig. 1 to 4 comprising measurement pipe not shown here,
Suspended substance and shell.Measurement converter 2 is used as indicator with axis 3, and detects the offset of suspended substance, which is converted into axis
3 corresponding angle.In the cylindrical shell 4 of measurement converter, it is provided with magnet on axis 3, the magnet is with setting in suspended substance
In magnet magnetically couple, thus the offset of suspended substance is converted into the corresponding angle of axis 3.Axis 3 passes through spiral with toucher 5
Connector 6 connects, and wherein toucher 5 is designed to flakelet 7, and is pasted with ferromagnetic film 8.The corresponding pole as defined in reaching
When limit flow, toucher 5 touches one of two reed switches 9 for being used as limiting value switch.Pointer 10 is measured also by spiral to connect
Fitting 6 is coupled with axis 3, and indicates current flow on unshowned scale herein.
Each in two reed switches 9 is tightened with auxiliary supporting body 11.Assist 11 one side of supporting body that there is circle
On the other hand notch 12 on the cylindrical shell 4 for sticking on measurement converter 2 of shape has the slot hole 13 concentric with axis 3.It measures
Converter 2 is also provided on the carrier.Two about 11 supporting bodies of auxiliary are stacked on supporting body 14, and screw 15 passes through slot hole 13
And it is tightened with supporting body 14.Spring 16 is provided on screw 15, the spring is towards supporting body 14 to two auxiliary supporting bodies 11
Applied force is fixed on auxiliary supporting body 11 on the supporting body in this way, but may make using the limited power of spring
Supporting body is assisted to rotate or swing around axis 3 with certain power.It assists being configured in each in supporting body 11 at two
Limit pointer 17, the limit pointer are indicated on scale due to the current limit stream that assistant carrier is rotated around axis 3 and is generated
Amount touches one of reed switch 9 at this time.
Reed switch 9 used is opening type reed switch.Reed switch 9 is by assisting supporting body 11 relative to toucher
5 appropriate arrangements so that when reaching by limit pointer 17 in the flow indicated on scale, toucher 5 touches the reed switch
9, that is, open it.This touch is carried out by the deformation in the magnetic field of the permanent magnet generation by reed switch 9.Here, magnetic field
Deformation is caused by ferromagnetic film 8.
Claims (7)
1. a kind of suspended body flowmeter for measuring the flow for the fluid for flowing through measurement pipe（1）, have：It is arranged in measurement pipe
The suspended substance that can be deviated by fluid flows；Offset with indicator, for detecting suspended substance simultaneously turns the offset
Change the measurement converter of the offset of corresponding size of indicator into（2）；At least one toucher（5）It is opened at least one limiting value
It closes（9）, wherein the toucher（5）It is coupled with the indicator, when reaching capacity flow, the toucher（5）Touch institute
State limiting value switch（9）, which is characterized in that the limiting value switch（9）It is reed switch, wherein by spatially at a distance of reed
The magnetic field that the mechanism being arranged to switched constant generates passes through the reed switch, when reaching capacity flow, the magnetic conductance in magnetic field
Under the influence of property, the toucher（5）Touch the reed switch, and wherein it is described spatially at a distance of reed switch consistently
The mechanism of setting is permanent magnet.
2. suspended body flowmeter as described in claim 1（1）, which is characterized in that instruction device indicates the flow, wherein
The instruction device includes measuring pointer（10）And scale, wherein the measurement pointer（10）It is coupled with the indicator.
3. suspended body flowmeter as claimed in claim 2（1）, which is characterized in that the measurement pointer（10）It is the shake-up
Device（5）.
4. suspended body flowmeter as claimed any one in claims 1 to 3（1）, which is characterized in that the limit flow can lead to
Cross the toucher（5）Adjustable relative position between the reed switch is adjusted.
5. suspended body flowmeter as claimed any one in claims 1 to 3（1）, which is characterized in that the limit flow is by pole
Limit pointer（17）It indicates.
6. the suspended body flowmeter as described in any one of claim 2 to 3（1）, which is characterized in that at least the reed is opened
It closes, the toucher（5）With the measurement converter（2）It is arranged in a common shell.
7. suspended body flowmeter as claimed in claim 6（1）, which is characterized in that in the housing instruction device setting.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011113869.6 | 2011-09-22 | ||
| DE201110113869 DE102011113869A1 (en) | 2011-09-22 | 2011-09-22 | Float-type volumetric flow meter for measuring flow rate of e.g. gas flowing through measuring tube, has float element arranged in tube, and trigger coupled with shaft and operated by limit switch that is designed as reed switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103017831A CN103017831A (en) | 2013-04-03 |
| CN103017831B true CN103017831B (en) | 2018-09-18 |
Family
ID=47827803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210354013.XA Active CN103017831B (en) | 2011-09-22 | 2012-09-21 | Suspended body flowmeter with limiting value switch |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103017831B (en) |
| DE (1) | DE102011113869A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567536B (en) * | 2019-09-20 | 2020-11-03 | 长春工业大学 | Magnetic coupling conversion type triboelectric rotor flow sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB623927A (en) * | 1945-09-25 | 1949-05-25 | Fischer & Porter Co | Magnetic coupling for flow-meters or the like |
| US3065635A (en) * | 1959-04-01 | 1962-11-27 | Brooks Instr Company Inc | Long travel magnetic follower device |
| US3452170A (en) * | 1967-06-27 | 1969-06-24 | Wallace & Tiernan Inc | Alarm switching device for variable restriction fluid flow meters |
| US4019369A (en) * | 1976-07-08 | 1977-04-26 | Fischer & Porter Co. | Pneumatic transmitter for variable area flowmeter |
| CN1186227A (en) * | 1996-12-05 | 1998-07-01 | 克洛纳测量技术公司 | Float flow meter |
| CN101344412A (en) * | 2007-07-12 | 2009-01-14 | 天津市津南区凯达电子有限公司 | Water meter electromagnetic flowmeter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1774578C3 (en) * | 1968-07-19 | 1979-07-05 | Bopp & Reuther Gmbh, 6800 Mannheim | Liquid meter with remote electrical transmission |
| DE2832688C2 (en) * | 1978-07-26 | 1986-09-11 | H. Meinecke Ag, 3014 Laatzen | Water meters, in particular Woltmann meters with a device for electrical remote transmission of the measured value |
| FR2444261A1 (en) * | 1978-12-13 | 1980-07-11 | Flonic Sa | Fluid flow meter electrical pulse generator - has circular magnet on submerged indicator actuating switch outside measurement chamber |
| DE8226199U1 (en) * | 1982-09-17 | 1982-12-16 | Kobold, Klaus, 6233 Kelkheim | DEVICE FOR FLOW MEASURING LIQUIDS AND GAS FLOWS |
| DE8709747U1 (en) * | 1987-07-15 | 1987-09-03 | Honsberg & Co Kg, 5630 Remscheid, De | |
| CN202083443U (en) * | 2011-04-27 | 2011-12-21 | 龚文资 | Too-low liquid level alarm device for oil tank |
-
2011
- 2011-09-22 DE DE201110113869 patent/DE102011113869A1/en not_active Withdrawn
-
2012
- 2012-09-21 CN CN201210354013.XA patent/CN103017831B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB623927A (en) * | 1945-09-25 | 1949-05-25 | Fischer & Porter Co | Magnetic coupling for flow-meters or the like |
| US3065635A (en) * | 1959-04-01 | 1962-11-27 | Brooks Instr Company Inc | Long travel magnetic follower device |
| US3452170A (en) * | 1967-06-27 | 1969-06-24 | Wallace & Tiernan Inc | Alarm switching device for variable restriction fluid flow meters |
| US4019369A (en) * | 1976-07-08 | 1977-04-26 | Fischer & Porter Co. | Pneumatic transmitter for variable area flowmeter |
| CN1186227A (en) * | 1996-12-05 | 1998-07-01 | 克洛纳测量技术公司 | Float flow meter |
| CN101344412A (en) * | 2007-07-12 | 2009-01-14 | 天津市津南区凯达电子有限公司 | Water meter electromagnetic flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011113869A1 (en) | 2013-03-28 |
| CN103017831A (en) | 2013-04-03 |
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