CN209416421U - A kind of orifice plate balance flow meter - Google Patents
A kind of orifice plate balance flow meter Download PDFInfo
- Publication number
- CN209416421U CN209416421U CN201920160245.9U CN201920160245U CN209416421U CN 209416421 U CN209416421 U CN 209416421U CN 201920160245 U CN201920160245 U CN 201920160245U CN 209416421 U CN209416421 U CN 209416421U
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- China
- Prior art keywords
- choke block
- flow meter
- throttle plate
- orifice plate
- hole
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Abstract
The utility model discloses a kind of orifice plate balance flow meters, including main body, first throttle plate and the second choke block are equipped in the main body, the first throttle plate is equipped with multiple function holes, second choke block is equipped with multiple function holes, the sum of the area of passage of function hole in the first throttle plate is 2-3 times of the sum of area of passage of function hole on second choke block, pressure pipe one is equipped in front of the first throttle plate, pressure pipe two is equipped between the first throttle plate and the second choke block, second choke block rear is equipped with pressure pipe three.The utility model improves the accuracy of flow measurement, and reduces influence of the flowmeter to water flow.
Description
Technical field
The utility model relates to flow monitoring fields, and in particular to a kind of orifice plate balance flow meter.
Background technique
Flowmeter can be divided into nozzle flowmeter and orifice flowmeter by structure, the former uses principle are as follows: fluid is in pipeline
Nozzle at form local contraction after, the flow velocity of fluid increases, and pressure difference is produced before and after throttling element, thus according to its pressure difference
Size measure the size of fluid flow；The measurement of standard orifice flow meter in the latter is based on the energy in sealing pipeline
Transfer principle: flow in the case where perfect fluid in pipeline is directly proportional to the square root of differential pressure, by measuring differential pressure value
The flow in pipeline can be calculated according to Bernoulli equation again.
The stability occurred in use in view of standard orifice flow meter is poor, precision is low, flow measurement range is small etc.
The appearance of problem, porous balance flow meter preferably solves these problems.Porous balance flow meter is a kind of revolutionary difference
Pressure type flow instrument, working principle is as other differential pressure flowmeters.The sensor of porous balance flow meter is more than one
The disk throttling rectifier in hole, is mounted on the section of pipeline, when fluid passes through disk, fluid will be balanced rectification, vortex
It is minimized, forming approximate ideal fluid by pressure obtaning device can get stable differential pressure signal, according to Bernoulli equation meter
Calculate volume flow, mass flow.
Utility model content
In order to overcome the shortcomings in the prior art, the utility model provides a kind of orifice plate balance flow meter.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution:
A kind of orifice plate balance flow meter, including main body, the main body is interior equipped with first throttle plate and the second choke block, described
First throttle plate is equipped with multiple function holes, and second choke block is equipped with multiple function holes, in the first throttle plate
The sum of area of passage of function hole is 2-3 times of the sum of area of passage of function hole on second choke block, described first
It is equipped with pressure pipe one in front of choke block, pressure pipe two, second section are equipped between the first throttle plate and the second choke block
Flowing plate rear is equipped with pressure pipe three.
Preferably, the function hole in the first throttle plate is bellmouth and its side being relatively large in diameter is facing forward.
Preferably, the function hole in the first throttle plate is evenly distributed on the periphery of first throttle plate.
Preferably, the function hole on second choke block is evenly distributed on the central region of the second choke block.
Preferably, second choke block rear is additionally provided with cowling panel, the cowling panel is equipped with multiple rectification holes.
Preferably, the rectification hole is bellmouth and the lesser side of its diameter is facing forward.
Preferably, multiple rectification holes are uniformly distributed, and the position of rectification hole is staggered with the function hole on the second choke block
Setting.
Preferably, the main body both ends are equipped with connecting flange.
The beneficial effects of the utility model are:
The utility model is provided with two choke blocks and three pressure pipes in main body, passes through pressure pipe one, pressure pipe two
A flow can be measured with first throttle plate, one can be measured again by pressure pipe two, pressure pipe three and the second choke block
Flow is averaged by measuring twice, can more accurately measure flow, reduces error.At the rear of the second choke block
It is also provided with cowling panel, fluid can be allowed uniformly to spread apart by cowling panel, reduces influence of the flowmeter to water flow.This is practical new
Type improves the accuracy of flow measurement, and reduces influence of the flowmeter to water flow.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Reference signs list:
1- main body；2- first throttle plate；The second choke block of 3-；4- pressure pipe one；5- pressure pipe two；6- pressure pipe three；7-
Function hole；8- cowling panel；9- rectification hole；10- connecting flange.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description:
As shown in Figure 1, a kind of orifice plate balance flow meter, including main body 1, first throttle plate 2 and the are equipped in the main body 1
Two choke blocks 3, the first throttle plate 2 are equipped with multiple function holes 7, and second choke block 3 is equipped with multiple function holes 7,
The sum of the area of passage of function hole 7 in the first throttle plate 2 is the flow-passing surface of the function hole 7 on second choke block 3
2-3 times of the sum of product, equipped with pressure pipe 1 in front of the first throttle plate 2, the first throttle plate 2 and the second choke block 3 it
Between be equipped with pressure pipe 25,3 rear of the second choke block be equipped with pressure pipe 36.In the utility model described " preceding " and " rear "
It is on the basis of water (flow) direction, the water flow place of first passing through is front, by place is rear after water flow.
Preferably, the function hole 7 in the first throttle plate 2 is bellmouth and its side being relatively large in diameter is facing forward.
Preferably, the function hole 7 in the first throttle plate 2 is evenly distributed on the periphery of first throttle plate 2.
Preferably, the function hole 7 on second choke block 3 is evenly distributed on the central region of the second choke block 3.
Preferably, 3 rear of the second choke block is additionally provided with cowling panel 8, the cowling panel 8 is equipped with multiple rectification holes
9。
Preferably, the rectification hole 9 is bellmouth and the lesser side of its diameter is facing forward.
Preferably, multiple rectification holes 9 are uniformly distributed, and the function hole 7 on the position of rectification hole 9 and the second choke block 3
It is arranged in a staggered manner.
Preferably, 1 both ends of main body are equipped with connecting flange 10.
The utility model is provided with two choke blocks and three pressure pipes in main body 1, passes through pressure pipe 1, pressure pipe
25 and first throttle plate 2 can measure a flow, can be surveyed again by pressure pipe 25, pressure pipe 36 and the second choke block 3
A flow is obtained, is averaged by measuring twice, flow can be more accurately measured, reduces error.In the second choke block 3
Rear be also provided with cowling panel 8, fluid can be allowed uniformly to spread apart by cowling panel 8, reduce influence of the flowmeter to water flow.
The utility model improves the accuracy of flow measurement, and reduces influence of the flowmeter to water flow.
Technological means disclosed in the utility model is not limited only to technological means disclosed in above embodiment, also
Including technical solution consisting of any combination of the above technical features.It should be pointed out that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (8)
1. a kind of orifice plate balance flow meter, which is characterized in that including main body, first throttle plate and the second section are equipped in the main body
Flowing plate, the first throttle plate are equipped with multiple function holes, and second choke block is equipped with multiple function holes, the first segment
The sum of area of passage of function hole in flowing plate is 2-3 times of the sum of area of passage of function hole on second choke block,
It is equipped with pressure pipe one in front of the first throttle plate, pressure pipe two, institute are equipped between the first throttle plate and the second choke block
The second choke block rear is stated equipped with pressure pipe three.
2. orifice plate balance flow meter as described in claim 1, which is characterized in that the function hole in the first throttle plate is cone
Shape hole and its side being relatively large in diameter is facing forward.
3. orifice plate balance flow meter as described in claim 1, which is characterized in that the function hole in the first throttle plate is uniform
It is distributed in the periphery of first throttle plate.
4. orifice plate balance flow meter as claimed in claim 3, which is characterized in that the function hole on second choke block is uniform
It is distributed in the central region of the second choke block.
5. the orifice plate balance flow meter as described in claim 1-4 any one, which is characterized in that second choke block rear
It is additionally provided with cowling panel, the cowling panel is equipped with multiple rectification holes.
6. orifice plate balance flow meter as claimed in claim 5, which is characterized in that the rectification hole be bellmouth and its diameter compared with
Small side is facing forward.
7. orifice plate balance flow meter as claimed in claim 6, which is characterized in that multiple rectification holes are uniformly distributed, and rectification hole
Position be arranged in a staggered manner with the function hole on the second choke block.
8. orifice plate balance flow meter as described in claim 1, which is characterized in that the main body both ends are equipped with connecting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920160245.9U CN209416421U (en) | 2019-01-30 | 2019-01-30 | A kind of orifice plate balance flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920160245.9U CN209416421U (en) | 2019-01-30 | 2019-01-30 | A kind of orifice plate balance flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209416421U true CN209416421U (en) | 2019-09-20 |
Family
ID=67944434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920160245.9U Active CN209416421U (en) | 2019-01-30 | 2019-01-30 | A kind of orifice plate balance flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209416421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088147A (en) * | 2021-11-05 | 2022-02-25 | 浙江浙能技术研究院有限公司 | Double-perforated-plate balance type flowmeter |
-
2019
- 2019-01-30 CN CN201920160245.9U patent/CN209416421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088147A (en) * | 2021-11-05 | 2022-02-25 | 浙江浙能技术研究院有限公司 | Double-perforated-plate balance type flowmeter |
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