CN206546189U - A kind of anti-corrosion damps spinner flowmeter - Google Patents

A kind of anti-corrosion damps spinner flowmeter Download PDF

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Publication number
CN206546189U
CN206546189U CN201720199517.7U CN201720199517U CN206546189U CN 206546189 U CN206546189 U CN 206546189U CN 201720199517 U CN201720199517 U CN 201720199517U CN 206546189 U CN206546189 U CN 206546189U
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CN
China
Prior art keywords
pipe
guide
guide rod
base tube
rotor
Prior art date
Application number
CN201720199517.7U
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Chinese (zh)
Inventor
聂志刚
孙向东
刘晨凯
毛德丰
许胜军
赵彩燕
金凯强
汪俊明
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浙江迪元仪表有限公司
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Priority to CN201720199517.7U priority Critical patent/CN206546189U/en
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Publication of CN206546189U publication Critical patent/CN206546189U/en

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Abstract

Spinner flowmeter is damped the utility model discloses a kind of anti-corrosion, including conical pipe, it is arranged on the sensing unit in conical pipe, the upper and lower ends of the conical pipe have and measured the relative port connect of pipeline, upper and lower ends are respectively equipped with guide pipe and lower guide pipe in conical pipe, the sensing unit includes rotor, it is arranged on the upper guide rod of both sides and lower guide rod above and below rotor, the upper guide rod and lower guide rod are plugged in guide pipe and lower guide pipe respectively, the conical pipe includes the joint steel pipe of outside, it is arranged on the internal lining pipe in joint steel pipe, the madial wall of the internal lining pipe is provided with the active side wall of turbination, the internal lining pipe, sensing unit, upper guide pipe and lower guide pipe are made of PTFE graphite composite materials or glass.The utility model is simple in construction, can effectively improve measurement accuracy, it is to avoid stuck phenomenon occurs in rotor, and the flow value of display is kept stable.

Description

A kind of anti-corrosion damps spinner flowmeter
Technical field
The utility model is related to a kind of flowmeter for being used to measure fluid flow, and corrosivity is applied to more particularly, to one kind The suspended body flowmeter of gas or liquid.
Background technology
Suspended body flowmeter is also referred to as spinner flowmeter, including conical pipe and be placed in conical pipe and can along pipe center line The sensing unit freely up and down moved, the madial wall of conical pipe has the work of one section of turbination gradually expanded from bottom to top Upper and lower ends are respectively equipped with guide pipe in side wall, conical pipe, correspondingly, and sensing unit includes rotor, is arranged on two above and below rotor The guide rod of both sides constitutes with the guide pipe of conical pipe upper and lower ends be slidably connected respectively above and below the guide rod of side, rotor, so that It can ensure that rotor is centered about, uniform gap formed between rotor and the active side wall of conical pipe.When the stream of measurement fluid During amount, detected fluid is flowed into from conical pipe lower end, and the impact flow of fluid rotor, and produces a upward effect to it Power, the size of this power changes with fluid flow size.When flow is sufficiently large, produced active force by rotor picking-up, And be allowed to raise.Meanwhile, detected fluid flows through the annular section between rotor and taper tube wall, from upper end outflow.Work as detected fluid To the active force of rotor during flowing, when being exactly equal to the weight of rotor in a fluid, rotor stress is in poised state and stopped In a certain height, rotor transmits signal by magnetic coupling, corresponding dial is shown the flow of fluid.Spinner flowmeter is general It is made of the metal of the class of stainless steel one, to ensure that it has enough intensity.When the fluid for needing to measure has stronger corruption During corrosion, conical pipe in spinner flowmeter etc. is typically made of polytetrafluoroethylene (PTFE).Polytetrafluoroethylene (PTFE) has excellent chemistry Stability, corrosion resistance, high lubrication non-stick, electrical insulating property and good anti-aging endurance, thus spinner flowmeter is fitted Answer the measurement of corrosive fluid.
But there is following defect in the etch-proof spinner flowmeter being made of polytetrafluoroethylene (PTFE):Firstly, since poly- four PVF material is softer, therefore the precision of its processing dimension is difficult to ensure that, so as to influence the measurement accuracy of flowmeter;Next, by It is larger in the thermal coefficient of expansion of polytetrafluoroethylene (PTFE)(About 10-20 times of stainless steel), therefore, when the fluid temperature variations of measurement When scope is larger, the fit clearance between guide rod and guide pipe can produce larger change, serious meeting cause guide rod and There is stuck phenomenon in guide pipe.
Utility model content
The purpose of this utility model is that measurement accuracy present in existing anticorrosion spinner flowmeter is low, stream in order to solve Easily the problem of rotor is stuck is set to damp spinner flowmeter there is provided a kind of anti-corrosion when temperature changes greatly, its is simple in construction, can have Effect ground improves measurement accuracy, and avoids rotor from stuck phenomenon occur.
To achieve these goals, the utility model uses following technical scheme:
A kind of anti-corrosion damps spinner flowmeter, including conical pipe, the sensing unit that is arranged in conical pipe, the conical pipe Upper and lower ends have and measure upper and lower ends in the relative port connect of pipeline, conical pipe to be respectively equipped with guide pipe and lower guiding Pipe, the sensing unit includes rotor, is arranged on the upper guide rod of both sides and lower guide rod above and below rotor, the upper guide rod and Lower guide rod is plugged in guide pipe and lower guide pipe respectively, and the conical pipe includes the joint steel pipe of outside, the company of being arranged on The internal lining pipe in steel pipe is connect, the madial wall of the internal lining pipe is provided with the active side wall of turbination, and the internal lining pipe, sensing are single First, upper guide pipe and lower guide pipe are made of PTFE graphite composite materials or glass.
Internal lining pipe of the present utility model, sensing unit, upper guide pipe and lower guide pipe use PTFE graphite composite materials Or glass is made, so as to both have the stability of higher hardness and size, is conducive to improving dimensional accuracy, has again fabulous Decay resistance, to be well adapted for the measurement of corrosive fluid.Particularly, the thermal expansion of PTFE graphite composite materials or glass Coefficient is smaller, therefore, when the fluid temperature variations of measurement, and the fit clearance between guide rod and guide pipe can be maintained not substantially Become, effectively prevent guide rod and stuck phenomenon occurs in guide pipe.Joint steel pipe is particularly arranged outside conical pipe, so that Conical pipe has enough intensity, it is ensured that it is normally used, while avoiding conical pipe from corrosion phenomenon occur.
Preferably, the liner base tube being made up of PTFE is embedded with the joint steel pipe, above and below the liner base tube Two ends are respectively equipped with the flange that radially one is outwards turned down, and the flange is covered each by the port of joint steel pipe upper and lower ends, The internal lining pipe is embedded in the liner base tube.
Because liner base tube is made of PTFE, thus with good decay resistance, while facilitate it to process, and Liner base tube does not form the matching relationship of size directly with rotor, therefore, when the temperature change of detected fluid, does not interfere with survey Accuracy of measurement.Particularly, the upper and lower ends of liner base tube are respectively equipped with the flange of covering joint steel pipe port, thus can effectively keep away Exempt from joint steel pipe by corrosive fluid to be corroded.
Preferably, having up-small and down-big shoulder hole in the liner base tube, the internal lining pipe is embedded in liner base tube Shoulder hole in the larger one end in bottom, and be positioned at the step of shoulder hole, the opening of the upper and lower ends of the liner base tube Place is respectively equipped with internal thread, the opening of the upper and lower ends of the liner base tube and is threaded with annular stent respectively, described Upper and lower guide pipe is integrally attached on the annular stent of correspondence side by radial pins respectively.
Shoulder hole can be such that liner base tube accurately and reliably positions, and upper and lower guide pipe respectively by radial pins integratedly On the annular stent for being connected to correspondence side, therefore upper and lower guide pipe can be made easily to be threaded in opening for liner base tube At mouthful, and it is easy to adjust axial location.
Preferably, two radial direction through hole for intersecting 90 degree are respectively equipped with the upper and lower guide rod, and two footpaths Misplaced arrangement in the axial direction to through hole, and the slide post that glass is made is fitted with the radial direction through hole, and the slide post stretches out footpath Hemispherical contact jaw is respectively equipped with to the two ends of through hole.
Because the slide post that glass is made has high hardness and minimum thermal coefficient of expansion, therefore, we can make, Lower guide rod forms the larger cooperation in gap with upper and lower guide pipe respectively, reduces the requirement to machining accuracy.Particularly, two Slide post intersects 90 degree, and the two ends of slide post are hemispherical contact jaw, thus makes upper and lower guide rod in X, Y two Direction obtains reliable location, and then can ensure that upper and lower guide rod forms uniform gap with upper and lower guide pipe, and can be notable Ground reduces the contact area of upper and lower guide rod and upper and lower guide pipe, to avoid clamping stagnation occur because of the change of temperature.
Preferably, the upper end of the upper guide pipe, which is provided with plug, the upper guide rod, is additionally provided with damping ring, damping ring Periphery be provided with spiral helicine amortisseur bar.
Amortisseur bar can make to form less gap between guide rod and upper guide sleeve, so, when fluid especially gas Instability of flow and in a short time quick change when, because the upper end of upper guide pipe is provided with plug, so that upper guide pipe The structure of similar cylinder is formed between upper guide rod, rotor is when oscilaltion is floated, and the fluid in upper guide pipe can pass through Tiny gap between rotor and upper guide pipe discharges and entered, so that a kind of damping action is formed, effectively to delay The lifting frequency and speed of rotor are solved, the flow value of display is kept stable.Particularly, when fluid flow quickly change so as to When causing the guide rod to be lifted in upper guide pipe, fluid can flow through the gap between guide pipe and upper guide rod, now flow The active force that a circumferencial direction is produced to spiral helicine amortisseur bar is known from experience, so that upper guide rod is being lifted together with rotor While rotate, and then be conducive to the reliable and stable lifting of rotor, it is to avoid stuck phenomenon occur.
Therefore, the utility model has the advantages that:It is simple in construction, measurement accuracy can be effectively improved, it is to avoid turn There is stuck phenomenon in son, and the flow value of display is kept stable.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is another structural representation of the present utility model.
Fig. 3 is the enlarged drawing at A in Fig. 2.
In figure:1st, conical pipe 11, joint steel pipe 111, port 12, internal lining pipe 121, active side wall 13, interior Serve as a contrast base tube 131, flange 2, sensing unit 21, rotor 22, upper guide rod 221, damping ring 222, amortisseur bar 23rd, lower guide rod 3, upper guide pipe 31, annular stent 32, radial pins 33, slide post 331, contact jaw 34th, plug 4, lower guide pipe.
Embodiment
The utility model is further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of anti-corrosion damping spinner flowmeter, it needs to be vertically mounted on measurement pipeline, specific bag Conical pipe 1, the sensing unit being arranged in conical pipe 2 are included, the upper and lower ends of conical pipe have and measured the relative end connect of pipeline Upper and lower ends vertically set upper guide pipe 3 and lower guide pipe 4 respectively in mouth 111, conical pipe.Sensing unit include rotor 21, The upper guide rod 22 of both sides and lower guide rod 23 above and below rotor are arranged on, upper guide rod is plugged in guide pipe, lower guide rod Then it is plugged in lower guide pipe.Certainly, we also need to set corresponding magnetic induction part and pointer in the outside of conical pipe Formula or digital flow display device.When the fluid matasomatism in conical pipe is on rotor, make rotor rest on conical pipe certain Individual height and position, magnetic induction part senses the height and position of rotor, so that corresponding electric signal is exported, finally in display device On can show corresponding flow value.Because spinner flowmeter belongs to prior art, therefore, to magnetic induction member in the present embodiment Part, display device etc. do not do specific description.
In order to ensure the intensity of conical pipe, while making flowmeter have preferable corrosion resistance, conical pipe includes outside not Become rusty the joint steel pipe 11 that steel is made, the internal lining pipe 12 being arranged in joint steel pipe, sets up big and down small on the madial wall of internal lining pipe Turbination active side wall 121, internal lining pipe, sensing unit, upper guide pipe and lower guide pipe are answered using PTFE graphite Condensation material or glass are made.It is known that glass has high hardness, therefore with good dimensional stability, be conducive to Ensure dimensional accuracy, while having good decay resistance, but there is frangible defect simultaneously, therefore, the outer layer of conical pipe Joint steel pipe is set, is both easy to and measures the docking of pipeline, while be conducive to improving the intensity of flowmeter, and in joint steel pipe Internal lining pipe, sensing unit, upper guide pipe and lower guide pipe are then not easily susceptible to the collision impact in the external world, thus will not be to flowmeter Intensity impact.And PTFE graphite composite materials can also show in addition to the good corrosion resistance having with PTFE Ground lifting hardness is write, so as to be conducive to improving dimensional accuracy.It is therefore, right because PTFE graphite composite materials are existing material Its formula etc. does not do specific description.
Process and assemble for convenience, we can first be embedded a liner base tube being made up of PTFE in joint steel pipe 13, the liner base tube covers the madial wall of whole joint steel pipe, and radially one outwards turns down shape for the upper end of liner base tube Into the flange 131 of covering joint steel pipe upper end port, the lower end similarly extend radially one outwards turnover formation covering of liner base tube The flange of joint steel pipe lower end port.In addition, there is up-small and down-big shoulder hole in liner base tube, and liner base tube top is small Internal thread is set at the upper end open in hole, so as to form screwed hole at upper end open, the lower end of liner base tube bottom macropore is opened It is same at mouthful that internal thread is set, so as to form screwed hole at lower ending opening.Internal lining pipe is embedded in the shoulder hole of liner base tube In the macropore of bottom, and it is positioned at the step of shoulder hole.In addition, being set respectively at the opening of the upper and lower ends of liner base tube Annular stent 31, up and down two annular stents be threaded in respectively in the screwed hole of liner base tube upper and lower ends, above lead Be integrally attached to pipe by 6 in the equally distributed radial pins 32 of circumferencial direction on the annular stent of upper end, under lead It is integrally attached to Guan Ze by 6 in the equally distributed radial pins of circumferencial direction on the annular stent of lower end.So, In assembling, upper guide pipe first can be threaded at the upper end open of liner base tube by we by annular stent, then Rotor is loaded in internal lining pipe, and made in the upper guide pipe of guide rod insertion.Then lower guide pipe is passed through into annular stent spiral shell Line is connected at the opening of liner base tube lower end, and the annular stent of guide pipe progresses into the screw thread of liner base tube lower end instantly When in hole, the lower guide rod on rotor is then progressed into lower guide pipe, so as to complete assembling.Due to liner base tube and rotor it Between matching relationship is not present, therefore the requirement to its dimensional accuracy can be reduced, and then directly can be made of PTFE material, with side Just it is processed.
In order that rotor can be lifted reliably, as shown in Figure 2 and Figure 3, we can also set two to intersect on upper guide rod Into 90 degree of radial direction through hole, and two radial direction through hole misplace arrangement in the axial direction;Similarly, two are set on lower guide rod Intersect 90 degree of radial direction through hole, and two radial direction through hole misplace arrangement in the axial direction.It is fitted with each radial direction through hole Radial direction through hole is stretched out at the slide post 33 that glass is made, the two ends of slide post respectively, and slide post stretches out the two ends of radial direction through hole Hemispherical contact jaw 331 is set respectively, so that slide post can connect with the madial wall formation point of upper guide pipe or lower guide pipe Touch.Certainly, we can make upper and lower guide rod respectively with the larger cooperation in formation gap of upper and lower guide pipe, two on upper guide rod Root slide post can make X, Y both direction of the guide rod in upper guide pipe obtain reliable location so that upper guide rod with it is upper Uniform gap is formed between guide pipe, and reduces contact area therebetween, it is to avoid is occurred during flow temperature change stuck Phenomenon.With this similarly, two slide posts on lower guide rod can obtain X, Y both direction of the lower guide rod in lower guide pipe Reliable location, so that uniform gap is formed between lower guide rod and lower guide pipe, and the contact area of reduction therebetween, Avoid stuck phenomenon occur during fluid temperature variations.
Further, we can also set a sealed plug 34 in the upper end of upper guide pipe, so that upper guide pipe Formed on the housing structure of similar cylinder, and the setting damping ring 221 on upper guide rod, the periphery of damping ring and spiral is set The amortisseur bar 222 of shape, sets less fit clearance between amortisseur bar and upper guide pipe, upper guide rod now is to be formed to lead Piston rod into pipe.When the instability of flow of fluid especially gas quickly changes in a short time rotor is increased, Fluid in upper guide pipe be squeezed can by the tiny gap between the amortisseur bar on upper guide pipe and upper guide pipe to Outer discharge, so as to form a kind of damping action, effectively to alleviate the rising frequency and speed of rotor, and then shows display device The flow value shown keeps stable;Analogously, when rotor declines, the fluid formation in upper guide pipe vacuumizes effect, now Outside fluid can be entered in upper guide pipe by the tiny gap between the amortisseur bar on upper guide pipe and upper guide pipe, from And a kind of damping action is formed, effectively to alleviate the droping frequency and speed of rotor, and then the flow for showing display device Value keeps stable.Particularly, when upper guide rod is lifted in upper guide pipe, fluid can be flowed through between guide pipe and amortisseur bar Gap, now fluid can to spiral helicine amortisseur bar produce a circumferencial direction active force so that upper guide rod together with Rotor is rotated while lifting together, and then is conducive to the reliable and stable lifting of rotor, it is to avoid stuck phenomenon occur.

Claims (5)

1. a kind of anti-corrosion damps spinner flowmeter, including conical pipe, the sensing unit that is arranged in conical pipe, the conical pipe Upper and lower ends have and measured upper and lower ends in the relative port connect of pipeline, conical pipe to be respectively equipped with guide pipe and lower guiding Pipe, the sensing unit includes rotor, is arranged on the upper guide rod of both sides and lower guide rod above and below rotor, the upper guide rod and Lower guide rod is plugged in guide pipe and lower guide pipe respectively, it is characterized in that, joint steel pipe of the conical pipe including outside, The internal lining pipe in joint steel pipe is arranged on, the madial wall of the internal lining pipe is provided with the active side wall of turbination, the liner Pipe, sensing unit, upper guide pipe and lower guide pipe are made of PTFE graphite composite materials or glass.
2. a kind of anti-corrosion damping spinner flowmeter according to claim 1, it is characterized in that, it is embedded with the joint steel pipe The liner base tube being made up of PTFE, the upper and lower ends of the liner base tube are respectively equipped with the flange that radially one is outwards turned down, The flange is covered each by the port of joint steel pipe upper and lower ends, and the internal lining pipe is embedded in the liner base tube.
3. a kind of anti-corrosion damping spinner flowmeter according to claim 2, it is characterized in that, have in the liner base tube upper Small lower big shoulder hole, the internal lining pipe is embedded larger one end in bottom in the shoulder hole of liner base tube, and is positioned at ladder At the step in hole, internal thread is respectively equipped with the opening of the upper and lower ends of the liner base tube, up and down the two of the liner base tube Annular stent is threaded with the opening at end respectively, the upper and lower guide pipe is integrally connected by radial pins respectively On the annular stent of correspondence side.
4. a kind of anti-corrosion damping spinner flowmeter according to claim 1 or 2 or 3, it is characterized in that, the upper and lower guiding It is respectively equipped with two radial direction through hole for intersecting 90 degree on bar, and two radial direction through hole misplace arrangement, the footpath in the axial direction The slide post that glass is made is fitted with into through hole, the two ends that the slide post stretches out radial direction through hole are respectively equipped with hemispherical connect Contravention.
5. a kind of anti-corrosion damping spinner flowmeter according to claim 1 or 2 or 3, it is characterized in that, the upper guide pipe Upper end, which is provided with plug, the upper guide rod, is additionally provided with damping ring, and the periphery of damping ring is provided with spiral helicine amortisseur bar.
CN201720199517.7U 2017-03-02 2017-03-02 A kind of anti-corrosion damps spinner flowmeter CN206546189U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108775933A (en) * 2018-06-08 2018-11-09 合肥利都自动化仪表有限公司 A kind of spinner flowmeter with separate type float stabilizer
CN109459117A (en) * 2018-10-09 2019-03-12 常州市成丰流量仪表有限公司 A kind of magnetic damping formula metal pipe float flow meter and its processing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108775933A (en) * 2018-06-08 2018-11-09 合肥利都自动化仪表有限公司 A kind of spinner flowmeter with separate type float stabilizer
CN108775933B (en) * 2018-06-08 2020-07-10 安徽中知众创知识产权运营有限公司 Rotor flow meter with disconnect-type float stabilizer
CN109459117A (en) * 2018-10-09 2019-03-12 常州市成丰流量仪表有限公司 A kind of magnetic damping formula metal pipe float flow meter and its processing method

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