CN205981308U - Small -bore differential pressure flow meter of health type - Google Patents
Small -bore differential pressure flow meter of health type Download PDFInfo
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- CN205981308U CN205981308U CN201620950932.7U CN201620950932U CN205981308U CN 205981308 U CN205981308 U CN 205981308U CN 201620950932 U CN201620950932 U CN 201620950932U CN 205981308 U CN205981308 U CN 205981308U
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- pressure
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- oil
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- pressure area
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Abstract
The utility model relates to a measurement of fluid flow technical field specifically is a small -bore differential pressure flow meter of health type, solves the current little scheduling problem of complicated, the with high costs and traditional differential pressure transmitter application scope of flow measurement appearance structure, which comprises an outer shell, high nip base, the low -pressure area base, shell internal fixation operation control unit, it is high, transversely run through rubber throttling element in the low -pressure area base, the outside border interval of rubber throttling element is equipped with the high nip oil -filled cavity body and the low -pressure area oil -filled cavity body, it is high, the internal packing silicon oil medium of low -pressure area oil -filled cavity, rubber throttling element top is equipped with differential pressure sensor, differential pressure sensor signal input part respectively with the height, low -pressure area oil -filled cavity body coupling, differential pressure sensor signal output part logical product controller is connected. Calculate fluidic flow dimension in the pipeline through measurement medium pressure variation, the principle is novel, and simple structure is with low costs, and production cycle is short, can implement the flow measurement of small pipeline effectively to be convenient for wash in inside no dead angle.
Description
Technical field
This utility model is related to fluid flux measurement technology field, the small-bore differential pressure flowmeter of specially a kind of hygiene-type.
Background technology
Traditional flow measurement instrument species is various, and the measuring principle of realization is different.Different instrument has difference
Feature, be suitable for different application scenarios, be wherein no lack of high-precision meter, such as Coriolis flowmeter.But these instrument
Table manufactures complicated, high cost, long the production cycle, and the occasion being relatively more suitable for the high-precision requirement such as trade transaction uses.And it is current
Traditional differential pressure transmitter is primarily used to measure the pressure of pipeline medium, can converse other of some correlations according to pressure
Parameter, such as liquid level etc., up to the present, and have not seen the report simultaneously realizing pressure and flow measurement using differential pressure transmitter
Road.
Content of the invention
This utility model is in order to only solve existing flowmeter complex structure, high cost and Traditional differential pressure transmitter
Be used for measuring pipe medium pressure, the scope of application little the problems such as, provide a kind of hygiene-type small-bore differential pressure flowmeter.
This utility model adopts the following technical scheme that realization：The small-bore differential pressure flowmeter of hygiene-type, including shell with
And it is arranged side by side the higher-pressure region pedestal in outer casing underpart and low-pressure area pedestal, inside the shell is fixed with the operation control with display screen
Setting rubber throttling element is extended transversely through, the outside circumferential interval of rubber throttling element is provided with device, higher-pressure region pedestal and low-pressure area pedestal
The oil-filled cavity of low-pressure area positioned at the oil-filled cavity in the higher-pressure region in the pedestal of higher-pressure region and in low-pressure area pedestal, higher-pressure region is oil-filled
It is filled with silicone oil medium in cavity and low-pressure area oil-filled chamber body, above rubber throttling element, be provided with band pressure and thermometric differential pressure
Sensor, cavity oil-filled with higher-pressure region and the oil-filled cavity of low-pressure area are connected the signal input part of differential pressure pick-up respectively, and differential pressure passes
The signal output part of sensor is connected with the input of arithmetic and control unit.In order to optimize the structure of this differential pressure flowmeter further, complete
It is apt to its function, this utility model has also carried out following structure to be improved：
Higher-pressure region sealing member and the sealing assembling of higher-pressure region pedestal are passed through in described rubber throttling element one end, and the other end passes through low
The sealing assembling of nip sealing member and low-pressure area pedestal is it is ensured that the sealing of rubber throttling element.
The cylindrical cavity wall of the oil-filled cavity in described higher-pressure region and the oil-filled cavity of low-pressure area is made using thin rubber, from
And can sensitively transmit very much pressure.
Described shell side is connected with the outfan of arithmetic and control unit equipped with aviation socket, aviation socket.Thus will flow
The temperature of body, pressure and flow signal are outwardly transmitted in the form of 4～20mA analog quantity by aviation socket.
Using structure design of the present utility model, improve on the basis of original pressure transmitter, cleverly by pressure
Measurement and flow measurement combine, and just can realize pressure and stream using differential pressure transmitter by simple structural change simultaneously
The measurement of amount, changes to calculate the uninterrupted of fluids within pipes by measuring pressure medium, principle is novel, structure is simple, becomes
This is low, with short production cycle, is particularly suitable for large-scale production, and the measurement of suitable liquids and gases medium is it is desirable to necessary in measurement pipe
Full of medium.The flow measurement of small pipeline can effectively be implemented by this structure design, and inside no dead angle, no microorganism
Grow risk, be easy to clean, be particularly suitable for canned flow measurement and the control of pharmacy and food service industry.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is fundamental diagram of the present utility model；
In figure：1- shell；2- higher-pressure region pedestal；3- low-pressure area pedestal；4- display screen；5- arithmetic and control unit；6- rubber section
Stream part；The oil-filled cavity in 7- higher-pressure region；The oil-filled cavity of 8- low-pressure area；9- differential pressure pick-up；10- higher-pressure region sealing member；11- low-pressure area
Sealing member；The cylindrical cavity wall of 12-；13- aviation socket.
Specific embodiment
The small-bore differential pressure flowmeter of hygiene-type, as shown in figure 1, including shell 1 and being arranged side by side the height in outer casing underpart
Nip pedestal 2 and low-pressure area pedestal 3, inside the shell is fixed with the arithmetic and control unit 5 with display screen 4, higher-pressure region pedestal and low-pressure area
Setting rubber throttling element 6 is extended transversely through, as shown in Fig. 2 the outside circumferential interval of rubber throttling element is provided with positioned at higher-pressure region in pedestal
The oil-filled cavity in higher-pressure region in pedestal 7 and the oil-filled cavity of low-pressure area 8 being located in low-pressure area pedestal, the oil-filled cavity in higher-pressure region and low
It is filled with silicone oil medium in nip oil-filled chamber body, above rubber throttling element, be provided with band pressure and thermometric differential pressure pick-up 9,
Cavity oil-filled with higher-pressure region and the oil-filled cavity of low-pressure area are connected the signal input part of pressure sensor respectively, the signal of differential pressure pick-up
Outfan is connected with the input of arithmetic and control unit.Higher-pressure region sealing member 10 and higher-pressure region pedestal 2 are passed through in rubber throttling element 6 one end
Sealing assembling, the other end passes through low-pressure area sealing member 11 and low-pressure area pedestal 3 sealing assembling.
The cylindrical cavity wall 12 of the oil-filled cavity in higher-pressure region 7 and the oil-filled cavity of low-pressure area 8 is made using thin rubber.
Shell 1 side is connected with the outfan of arithmetic and control unit equipped with aviation socket 13, aviation socket.
Primary structure of the present utility model changes in pressure pipe fitting part.Pressure pipe fitting adopts saving design structure, that is, no
Dead angle rubber throttling element 6, such as accompanying drawing 2.Specific work process is：Fluid full of no dead angle rubber throttling element, when it flows through pipe
During no dead angle throttling element in road, flow velocity will form local contraction at no dead angle rubber throttling element, thus flow velocity increases, static pressure
Power reduce, then before and after no dead angle throttling element, just create pressure reduction, the pressure at high and low pressure pass through the oil-filled cavity in higher-pressure region and
The oil-filled cavity of low-pressure area, the measuring diaphragm that pressure is sent to differential pressure transmitter carries out sensing and resolves.Fluid flow is bigger, produces
Pressure reduction bigger, so can resolve the size of flow according to pressure change.This measuring method is with the equation of continuity that flows
Based on (mass conservation law) and Bernoulli equation (law of conservation of energy), i.e. V2>V1, leads to P1<P2.Through differential pressure sensing
Equation Q=f (P1-P2) is realized, Q is the flow of closed conduct fluid after the compensation operation of device.
In said process, no rubber throttling element in dead angle has two functions, first, perceiving the pressure of fluid in cavity, passes through
Pressure is sent to differential pressure pick-up by the oil-filled cavity in higher-pressure region and the oil-filled cavity of low-pressure area；Second, produced different by throttling element
Flow velocity and pressure；The oil-filled cavity in higher-pressure region：Pressure in oil-filled for higher-pressure region cavity is sent to connected differential pressure pass
Sensor；The oil-filled cavity of low-pressure area：Pressure in oil-filled for low-pressure area cavity is sent to connected differential pressure pick-up.
Work process：
Cylindrical cavity wall at the oil-filled cavity in higher-pressure region of differential pressure pick-up and at the oil-filled cavity of low-pressure area adopts thin rubber,
Such that it is able to sensitively transmit very much pressure；Silicone oil is filled respectively in the oil-filled chamber body of higher-pressure region and in low-pressure area oil-filled chamber body.Work as stream
When body flows through the throttle-type pipeline of special construction, no dead angle rubber throttling element different parts by produce different pressure P1 and
P2, pressure P1 and P2 is passed to band pressure and thermometric differential pressure pick-up by silicone oil, calculates through specific mathematical model
The now flow of fluid, can pass through the flow signal of aviation socket output liquid after arithmetic and control unit is processed.
Claims (4)
1. a kind of small-bore differential pressure flowmeter of hygiene-type, is characterized in that including shell（1）And be arranged side by side in outer casing underpart
Higher-pressure region pedestal（2）With low-pressure area pedestal（3）, inside the shell is fixed with band display screen（4）Arithmetic and control unit（5）, higher-pressure region base
Setting rubber throttling element is extended transversely through in seat and low-pressure area pedestal（6）, outside rubber throttling element, circumferential interval is provided with positioned at high pressure
The oil-filled cavity in higher-pressure region in area's pedestal（7）The oil-filled cavity with the low-pressure area in low-pressure area pedestal（8）, higher-pressure region oil-filled chamber
It is filled with silicone oil medium in body and low-pressure area oil-filled chamber body, be provided with band pressure above rubber throttling element and thermometric differential pressure passes
Sensor（9）, cavity oil-filled with higher-pressure region and the oil-filled cavity of low-pressure area are connected the signal input part of pressure sensor respectively, and differential pressure senses
The signal output part of device is connected with the input of arithmetic and control unit.
2. the small-bore differential pressure flowmeter of hygiene-type according to claim 1, is characterized in that rubber throttling element（6）One end is passed through
Higher-pressure region sealing member（10）With higher-pressure region pedestal（2）Sealing assembling, the other end passes through low-pressure area sealing member（11）With low-pressure area base
Seat（3）Sealing assembling.
3. the small-bore differential pressure flowmeter of hygiene-type according to claim 1 and 2, is characterized in that the oil-filled cavity in higher-pressure region（7）
The oil-filled cavity with low-pressure area（8）Cylindrical cavity wall（12）Made using thin rubber.
4. the small-bore differential pressure flowmeter of hygiene-type according to claim 1 and 2, is characterized in that shell（1）Side is equipped with boat
Dummy receptacle（13）, aviation socket is connected with the outfan of arithmetic and control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620950932.7U CN205981308U (en) | 2016-08-27 | 2016-08-27 | Small -bore differential pressure flow meter of health type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620950932.7U CN205981308U (en) | 2016-08-27 | 2016-08-27 | Small -bore differential pressure flow meter of health type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205981308U true CN205981308U (en) | 2017-02-22 |
Family
ID=58036087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620950932.7U Expired - Fee Related CN205981308U (en) | 2016-08-27 | 2016-08-27 | Small -bore differential pressure flow meter of health type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205981308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036663A (en) * | 2017-05-04 | 2017-08-11 | 安徽省锐凌计量器制造有限公司 | Soft impeller flowmeter |
-
2016
- 2016-08-27 CN CN201620950932.7U patent/CN205981308U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036663A (en) * | 2017-05-04 | 2017-08-11 | 安徽省锐凌计量器制造有限公司 | Soft impeller flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20210827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |