CN206208318U - Novel material flowmeter for pipe - Google Patents
Novel material flowmeter for pipe Download PDFInfo
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- CN206208318U CN206208318U CN201621308660.7U CN201621308660U CN206208318U CN 206208318 U CN206208318 U CN 206208318U CN 201621308660 U CN201621308660 U CN 201621308660U CN 206208318 U CN206208318 U CN 206208318U
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- pressure difference
- damping block
- difference transmitter
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Abstract
The utility model is related to a kind of Novel material flowmeter for pipe, including body, and body middle part inwall top is provided with pipeline damping block, and middle part to the rear and front end of pipeline damping block is gradually narrowed, and pipeline damping block interior thickness is more than rear and front end；First gland, the second gland and pressure difference transmitter are installed outside body, first gland, the second gland are connected with tubular body, wherein the first gland is installed on body front end, second gland is mutually corresponding with the medium position of pipeline damping block, and the first gland is connected to the positive interface of pressure difference transmitter by flexible pipe, the second gland is connected to the negative interface of pressure difference transmitter by flexible pipe；The terminal box for pressure difference transmitter and controller to be communicated to connect is also equipped with body.By damping the reasonable setting of block structure, the probability blocked in material conveying process can be reduced, it is also possible to reduce the chipping situations of material such as pipe tobacco, improve wire feed quality.
Description
Technical field
The present invention relates to flowmeter, in particular by the material conveying air velocity measuring equipment in wind model material system.
Background technology
Current expects pipe flowmeter common are several：One, using the speed of material in microwave and electric detecting technology metering expects pipe,
So as to draw the wind speed in pipeline indirectly, this mode haves the shortcomings that inaccurate to the metering of wind speed in pipeline；Two, using straight
Flowmeter for pipe measures wind speed, and the flowmeter is the fricting resistance loss that is moved in the duct according to air-flow measures pressure difference, real
Test room experiment and learn the flowmeter pressure difference very little, the pressure natural fluctuation in pipeline influences very big on its pressure difference, equally exists
The shortcoming of measuring accuracy difference；Three, Venturi meter, what the country was conventional at present is exactly this, and such flowmeter is disconnected according to each
Total head equal principle design in face is made, and static pressure difference is obtained by the change of cross-sectional area, and the size of static pressure difference just represents
The size of wind speed, the change of static pressure difference just represents the change of wind speed, and the pressure difference that the flowmeter is obtained is big, measuring accuracy is high.But
The flowmeter also there is a problem of it is certain, due to material in course of conveying substantially close to duct bottom motion, so work as thing
Resistance and blockage phenomenon will be subject to because of damping block when material is by flowmeter, particularly tobacco business is in feeding tobacco-thread
During, the resistance can not only cause pipe tobacco to block, and can also cause pipe tobacco fragmentation.In sum, existing flowmeter, especially
Venturi meter employed in wind model material system needs to improve.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of improved flowmeter, its conveying for being more beneficial for material.
The technical solution adopted for the present invention to solve the technical problems is：A kind of Novel material flowmeter for pipe, including body, institute
State body middle part inwall top and be provided with pipeline damping block, middle part to the rear and front end of the pipeline damping block is gradually narrowed, and
Pipeline damping block interior thickness is more than rear and front end；First gland, the second gland and pressure difference pick-up are installed outside the body
Device, first gland, the second gland are connected with the tubular body, wherein the first gland is installed on body front end, second
Gland is mutually corresponding with the medium position of pipeline damping block, and first gland is connected to pressure difference transmitter by flexible pipe
Positive interface, the second gland is connected to the negative interface of pressure difference transmitter by flexible pipe；It is also equipped with the body for by pressure difference
The terminal box that transmitter is communicated to connect with controller.
Foregoing Novel material flowmeter for pipe, first gland, between the second gland and the body is provided with gas
Filter.
Foregoing Novel material flowmeter for pipe, first gland, the second gland by hose coupling with it is corresponding
Flexible pipe is connected.
Foregoing Novel material flowmeter for pipe, the rear end of the body is provided with what is be connected with controller by terminal box
Pressure sensor.
Implement technical scheme, at least with following beneficial effect：By damping the reasonable setting of block structure,
The probability blocked in material conveying process can be reduced, it is also possible to reduce the chipping situations of material such as pipe tobacco,
Improve wire feed quality.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is schematic diagram of the present utility model；
Fig. 2 is the utility model damping block schematic top plan view；
Fig. 3 is the utility model damping block longitudinal direction schematic cross-sectional view；
Mark is described as follows in figure：
100th, body；1st, gas-filtering device；2nd, pipeline damping block；3rd, the first gland；30th, the second gland；4th, flexible pipe connects
Head；5th, flexible pipe；6th, pressure difference transmitter；7th, terminal box；8th, pressure sensor.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now compare accompanying drawing and describe in detail
Specific embodiment of the invention.
A kind of Novel material flowmeter for pipe as Figure 1-3, including body 100, the middle part inwall top of the body 100 set
Middle part to the rear and front end for having pipeline damping block 2, the pipeline damping block 2 is gradually narrowed, and the interior thickness of pipeline damping block 2
More than rear and front end；First gland 3, the second gland 30 and pressure difference transmitter 6, described first are installed outside the body 100
Gland 3, the second gland 30 are connected with the inside of the body 100, wherein the first gland 3 is installed on the front end of body 100, the second pressure
The correspondence of lid 30 is installed on the medium position of pipeline damping block 2, and first gland 3 is connected to pressure difference pick-up by flexible pipe 5
The positive interface of device 6, the second gland 30 is connected to the negative interface of pressure difference transmitter 6 by flexible pipe 5；Also installed on the body 100
There is the terminal box 7 for pressure difference transmitter 6 and controller to be communicated to connect.Wherein, it is provided with by connecing in the rear end of body 100
The pressure sensor 8 that line box 7 is connected with controller.And in certain embodiments, the first gland 3, the second gland 30 and the pipe
Gas-filtering device 1 is provided between body 100, gas-filtering device 1 is used for all kinds of impurity such as Chalk-dust filtering, it is to avoid it enters flexible pipe
The measurement of 5 influence pressure differences；Wherein the first gland 3, the second gland 30 are connected using the joint 4 of flexible pipe 5 with corresponding flexible pipe 5.
Be can be seen that from accompanying drawing, prevent dust from having two pieces into the gas-filtering device 1 in pressure measurement difference flexible pipe 5, pacified respectively
Mounted in the first gland 3, the lower section of the second gland 30, the first gland 3, the second gland 30 compress gas-filtering device by threaded connection
1；The joint 4 of flexible pipe 5 is arranged on two glands, is for connection to flexible pipe 5, and it uses engagement thread to be connected as one with gland
Body；Flexible pipe 5 has two, and the first gland 3, the second gland 30 are connected with pressure difference transmitter 6 respectively；Pressure difference transmitter 6 is by pipeline
Interior pressure difference is transformed into the current signal value of 4-20mA, and pressure sensor 8 is used for measuring the static pressure of rear end section in pipeline
Pressure difference signal and pressure signal are concentrated same controller together by value, terminal box 7（PLC）Carry out data transmission；Pipeline damping block 2 is pacified
On the inwall at the middle part of body 100, and only connected as one with pipeline using riveting method in the top setting of inwall, it is existing
Some pipeline damping blocks 2 are configured around the inwall of whole body 100, easily cause body 100 block, pipe tobacco fragmentation etc.
Situation.Damping it is block-shaped by its front and back ends after change in contraction-like, it is smaller to have conveyed resistance to material, and it is this before
Hold the structure gradually increased to middle part to provide enough deceleration buffer spaces, reduce the internal channel of body 100 and drastically shrink institute
The negative effect for bringing, such as pipe tobacco fragmentation；Damping block middle part to rear end is gradually narrowed again, by the free air space in body 100
Progressively discharge, the mass flow for being conveyed slowly increases, the probability that reduction results in blockage.Additionally, set by the second gland 30
Position just corresponds to damping block width, all big middle part of thickness, still can obtain rational static pressure.
The operation principle of expects pipe flowmeter：Expects pipe flowmeter is to measure wind speed according to the static pressure difference in pipeline, and static pressure
Difference is calculated according to the equal principle of total head, that is to say, that do not considering fricting resistance loss and local resistance loss
In the case of, the total head of any section is all equal in pipeline, and so-called total head refers to just static pressure and dynamic pressure sum on certain section.Due to
The effect of damping block reduces the area of passage of the middle part section of body 100, dynamic pressure rising, static pressure reduction so on the section,
That is the section（The correspondence position of second gland 30）Static pressure be less than pipeline front end section（The correspondence position of first gland 3）'s
Static pressure.Piece one end of flexible pipe 5 connects the joint 4 of flexible pipe 5 of the first gland 3, and the "+" of the other end of flexible pipe 5 connection pressure difference transmitter 6 connects
Mouthful；Another one end of flexible pipe 5 connects the joint 4 of flexible pipe 5 of the second gland 30, and the other end of flexible pipe 5 connects the "-" of pressure difference transmitter 6
Interface, then pressure difference transmitter 6 pressure difference in pipeline is transformed into the current signal value of 4-20mA.
The workflow of expects pipe flowmeter：Expects pipe flowmeter is necessarily mounted in the horizontal pipe of expects pipe, and it is wanted and wind speed
Adjusting means and PLC（Controller）Use cooperatively.In wind speed metering, the static pressure of section corresponding to the first gland 3 passes through one
Gas-filtering device 1, via a joint 4 of flexible pipe 5 and a flexible pipe 5, passes to the "+" interface of pressure difference transmitter 6；Second gland
The static pressure of section corresponding to 30 passes through another pneumatic filter, via another joint 4 of flexible pipe 5 and another flexible pipe 5, passes to
The "-" interface of pressure difference transmitter 6；Pressure difference transmitter 6 will export an electricity for determination in the presence of such a static pressure difference
Stream signal, PLC will calculate the actual wind speed in pipeline, then the effect for passing through wind-speed adjusting device according to current signal value,
So as to realize the automatic tracing control of feeding wind speed.The static pressure of rear end section is converted into 4- in the Will pipelines of pressure sensor 8
The current signal value of 20mA, PLC will calculate the actual pressure in pipeline according to current signal value, and according to the reality in pipeline
The size of border pressure value judges whether expects pipe blocks, so as to realize automatically processing expects pipe blocking accident.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various changes, combination and change.It is all within the spirit and principles in the present invention, made
Any modification, equivalent substitution and improvements etc., should be included within scope of the presently claimed invention.
Claims (4)
1. a kind of Novel material flowmeter for pipe, including body, it is characterised in that：The body middle part inwall top is provided with pipeline damping
Block, middle part to the rear and front end of the pipeline damping block is gradually narrowed, and pipeline damping block interior thickness is more than rear and front end；
First gland, the second gland and pressure difference transmitter be installed outside the body, first gland, the second gland with it is described
Tubular body is connected, wherein the first gland is installed on body front end, the second gland is mutually right with the medium position of pipeline damping block
Should, and first gland is connected to the positive interface of pressure difference transmitter by flexible pipe, and the second gland is connected to pressure by flexible pipe
The negative interface of difference transmitter；The terminal box for pressure difference transmitter and controller to be communicated to connect is also equipped with the body.
2. Novel material flowmeter for pipe as claimed in claim 1, it is characterised in that：First gland, the second gland with it is described
Gas-filtering device is provided between body.
3. Novel material flowmeter for pipe as claimed in claim 2, it is characterised in that：First gland, the second gland pass through
Hose coupling is connected with corresponding flexible pipe.
4. Novel material flowmeter for pipe as claimed in claim 3, it is characterised in that：The rear end of the body is provided with by wiring
The pressure sensor that box is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621308660.7U CN206208318U (en) | 2016-11-30 | 2016-11-30 | Novel material flowmeter for pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621308660.7U CN206208318U (en) | 2016-11-30 | 2016-11-30 | Novel material flowmeter for pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208318U true CN206208318U (en) | 2017-05-31 |
Family
ID=58751119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621308660.7U Active CN206208318U (en) | 2016-11-30 | 2016-11-30 | Novel material flowmeter for pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206208318U (en) |
-
2016
- 2016-11-30 CN CN201621308660.7U patent/CN206208318U/en active Active
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