CN209342164U - Double chamfering wear resistance balance orifice plate differential pressure devices - Google Patents
Double chamfering wear resistance balance orifice plate differential pressure devices Download PDFInfo
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- CN209342164U CN209342164U CN201920123987.4U CN201920123987U CN209342164U CN 209342164 U CN209342164 U CN 209342164U CN 201920123987 U CN201920123987 U CN 201920123987U CN 209342164 U CN209342164 U CN 209342164U
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- orifice
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- orifice flange
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- downstream
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 34
- 238000010079 rubber tapping Methods 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000004575 stone Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 241000233855 Orchidaceae Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model discloses double chamfering wear resistance balance orifice plate differential pressure devices, including upstream orifice flange and downstream orifice flange, the outer ring of the upstream orifice flange and downstream orifice flange is uniformly provided with the connecting screw hole of several same sizes, it is connected at connecting screw hole by connecting screw between the upstream orifice flange and downstream orifice flange, the both ends of the connecting screw are separately installed with coupling nut, it is internal between the upstream orifice flange and downstream orifice flange that one piece of choke block is installed, a positive pressure tappings are offered on the upstream orifice flange.Double chamfering wear resistance balance orifice plate differential pressure devices described in the utility model, multiple throttle orifices are opened up by the surface in choke block, flow field self-rectifying effect is realized using rectifier principle, reduce the straight pipe demand before and after throttling element, measurement performance is greatly improved, while 45 ° of chamferings are all set in the two sides of throttle orifice, abrasion can be effectively reduced, it can play the role of steady flow condition again, kill two birds with one stone.
Description
Technical field
The utility model relates to flow measurement device field, in particular to double chamfering wear resistance balance orifice plate differential pressure devices.
Background technique
Differential pressure flowmeter is with a long history, is most widely used in all kinds of flow instruments, it is with Bernoulli's theorem and stream
Dynamic continuity equation is basic principle, the difference of pressure caused by restricting element is flowed through by measuring fluids within pipes, in conjunction with
Working condition is known to acquire flow, and what currently used orifice plate differential pressure device used makes single hole throttle principle, and fluid is passing through
Vortex, vibration and signal noise can be generated after throttle orifice, reduces flowing field stability, need to be arranged the straight tube of longer upstream and downstream
Section is balanced, and reduces the scope of application, and the throttle orifice of common orifice plate differential pressure device is not directed to chamfering or only designs
Unilateral chamfering, throttle orifice can generate irregular wear after being used for a long time, to influence measuring accuracy.
Utility model content
The main purpose of the utility model is to provide double chamfering wear resistance balance orifice plate differential pressure devices, can effectively solve to carry on the back
The problems in scape technology.
To achieve the above object, the technical solution that the utility model is taken are as follows:
Double chamfering wear resistance balance orifice plate differential pressure devices, including upstream orifice flange and downstream orifice flange, the upstream orifice
The outer ring of plate flange and downstream orifice flange is uniformly provided with the connecting screw hole of several same sizes, the upstream orifice flange with
It is connected at connecting screw hole by connecting screw between the orifice flange of downstream, the both ends of the connecting screw are separately installed with connection
Nut, it is internal between the upstream orifice flange and downstream orifice flange that one piece of choke block, the upstream orifice flange are installed
On offer a positive pressure tappings, a No.1 pressure pipe is installed in the positive pressure tappings, is opened on the downstream orifice flange
Equipped with a negative pressure tappings, No. two pressure pipes are installed in the negative pressure tappings.
Preferably, the coupling nut is respectively being equipped with a spring washer with the inside of connecting screw junction, described
Spring washer is carved with the striped for increasing frictional force close to a side surface of upstream orifice flange and downstream orifice flange.
Preferably, the choke block is separately installed in the junction with upstream orifice flange and downstream orifice flange there are two close
Gasket.
Preferably, the centre of surface position of the choke block offers a center throttle orifice, the surface of the choke block
It is uniformly provided with several outer throttle orifices, the center throttle orifice and outer throttle orifice and section in a ring positioned at the outside of center throttle orifice
The front and rear surfaces of flowing plate are designed with 45 ° of chamfering.
Preferably, the top of the choke block, which is separately connected through a screw thread mode and is equipped with one, hangs handle.
Preferably, the center of circle of the choke block and the center of circle of upstream orifice flange and downstream orifice flange are held at together
On one horizontal line.
Preferably, the internal diameter of the folding gasket seal is more straight than the internal pipeline of upstream orifice flange and downstream orifice flange
Diameter is two millimeters big.
Compared with prior art, the utility model has the following beneficial effects:
In the utility model, by symmetrically opening up multiple throttle orifices on the surface of choke block, and throttle orifice and choke block
Front and rear surfaces are designed with 45 ° of chamfering, have the characteristics that symmetrical porous structure, energy stream field carry out flat using wear resistance balance orifice plate
Weighing apparatus, reduces vortex, vibration and signal noise, greatly improves flowing field stability, there is the linearity, repeatability than traditional orifice plate
It is obviously improved, and greatly reduces the formation for being detained dead zone, reduce the blocked chance of fluid bore, reduce front and back straight pipe
Demand, can be by straight pipe demand control before and after differential pressure device in 2~5D, and improves buildup time, and utilize whole
Stream device principle to the wear-resisting orifice plate of double chamferings according to etc. Reynolds numbers and momentum balance principle carry out veneer and divide hole, diversion design, can be with
Guarantee to realize self-rectifying effect in flow field on the basis of measurement performance, reduces the straight pipe demand before and after throttling element, it can be preferably
The advantage for playing differential pressure flowmeter is compared with conventional throttle device, and measurement performance has a distinct increment, and measurement advantage is more bright
It is aobvious.
Detailed description of the invention
Fig. 1 is the side sectional view of the double chamfering wear resistance balance orifice plate differential pressure devices of the utility model；
Fig. 2 is the plan view of the double chamfering wear resistance balance orifice plate differential pressure devices of the utility model；
Fig. 3 is the choke block structure sectional view of the double chamfering wear resistance balance orifice plate differential pressure devices of the utility model.
In figure: 1, upstream orifice flange；2, downstream orifice flange；3, connecting screw hole；4, connecting screw；5, coupling nut；
6, spring washer；7, choke block；8, gasket seal；9, handle is hung；10, positive pressure tappings；11, No.1 pressure pipe；12, negative pressure tappings；
13, No. two pressure pipes；14, outer throttle orifice；15, center throttle orifice.
Specific embodiment
To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below
In conjunction with specific embodiment, the utility model is further described.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside" " front end ", " after
The orientation or positional relationship of the instructions such as end ", " both ends ", " one end ", " other end " is that orientation based on the figure or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition,
Term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " being provided with ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
As shown in Figure 1-3, double chamfering wear resistance balance orifice plate differential pressure devices, including upstream orifice flange 1 and downstream well plate method
The outer ring of orchid 2, upstream orifice flange 1 and downstream orifice flange 2 is uniformly provided with the connecting screw hole 3 of several same sizes, upstream
It is connected at connecting screw hole 3 by connecting screw 4 between orifice flange 1 and downstream orifice flange 2, the both ends point of connecting screw 4
Coupling nut 5 is not installed, it is internal between upstream orifice flange 1 and downstream orifice flange 2 that one piece of choke block 7, upstream are installed
A positive pressure tappings 10 are offered on orifice flange 1, and a No.1 pressure pipe 11, downstream well plate method are installed in positive pressure tappings 10
A negative pressure tappings 12 are offered on orchid 2, No. two pressure pipes 13 are installed in negative pressure tappings 12.
Coupling nut 5 is respectively equipped with a spring washer 6 in the inside with 4 junction of connecting screw, and spring washer 6 is close
It is carved with the striped for increasing frictional force in one side surface of upstream orifice flange 1 and downstream orifice flange 2；Choke block 7 with upstream orifice
The junction of plate flange 1 and downstream orifice flange 2 separately install there are two gasket seal 8；The centre of surface position of choke block 7 opens up
There is a center throttle orifice 15, the outside that the surface of choke block 7 is located at center throttle orifice 15 is uniformly provided with several outer in a ring
The front and rear surfaces of throttle orifice 14, center throttle orifice 15 and outer throttle orifice 14 and choke block 7 are designed with 45 ° of chamfering；Choke block 7
Top, which is separately connected through a screw thread mode and is equipped with one, hangs handle 9；The center of circle of choke block 7 and upstream orifice flange 1 and downstream aperture
The center of circle of plate flange 2 is held on same horizontal line；The internal diameter of gasket seal 8 is rolled over than upstream orifice flange 1 and downstream
The internal pipeline diameter of orifice flange 2 is two millimeters big.
It should be noted that the utility model is double chamfering wear resistance balance orifice plate differential pressure devices, pass through the table in choke block 7
Face center opens up a center throttle orifice 15, while being located at the outside of center throttle orifice 15 in ring on the surface of choke block 7
Shape uniformly opens up several outer throttle orifices 14, when fluid passes through choke block 7 in the duct by center throttle orifice 15 and outer throttle orifice
14 are divided into several shuntings, and the fluid after shunting is difficult to form vortex in the downstream of choke block 7 since kinetic energy becomes smaller, from
And avoid vibration and the generation of signal noise, and greatly reduce be detained dead zone formation, enable pressure pipe measure compared with
For accurate data, since the fluid after shunting is since kinetic energy is smaller, it is easier to converge integral, become buildup time
It is short, to reduce straight pipe demand before and after differential pressure device；In addition, center throttle orifice 15 and outer throttle orifice 14 and choke block 7
Front and rear surfaces are designed with 45 ° of chamfering, and two-sided inclined chamfering can reduce the resistance that fluid is subject to when flowing through choke block 7,
Frictional dissipation of the fluid to center throttle orifice 15 and outer throttle orifice 14 is decreased simultaneously, improve differential pressure device uses the longevity
Life reduces the number of maintenance replacement.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.This shape
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (7)
1. pair chamfering wear resistance balance orifice plate differential pressure device, it is characterised in that: including upstream orifice flange (1) and downstream orifice flange
(2), the outer ring of the upstream orifice flange (1) and downstream orifice flange (2) is uniformly provided with the connection spiral shell of several same sizes
Hole (3) passes through connecting screw (4) at connecting screw hole (3) between the upstream orifice flange (1) and downstream orifice flange (2)
Connection, the both ends of the connecting screw (4) are separately installed with coupling nut (5), the upstream orifice flange (1) and downstream orifice plate
It is internal between flange (2) that one piece of choke block (7) is installed, a positive pressure tappings are offered on the upstream orifice flange (1)
(10), a No.1 pressure pipe (11) is installed in the positive pressure tappings (10), offers one on the downstream orifice flange (2)
A negative pressure tappings (12), the negative pressure tappings (12) are interior to be equipped with No. two pressure pipes (13).
2. double chamfering wear resistance balance orifice plate differential pressure devices according to claim 1, it is characterised in that: the coupling nut
(5) one spring washer (6) is respectively installed in the inside with connecting screw (4) junction, the spring washer (6) is close to upstream
It is carved with the striped for increasing frictional force in one side surface of orifice flange (1) and downstream orifice flange (2).
3. double chamfering wear resistance balance orifice plate differential pressure devices according to claim 1, it is characterised in that: the choke block (7)
There are two separately being installed in the junction with upstream orifice flange (1) and downstream orifice flange (2) gasket seal (8).
4. double chamfering wear resistance balance orifice plate differential pressure devices according to claim 1, it is characterised in that: the choke block (7)
Centre of surface position offer a center throttle orifice (15), the surface of the choke block (7) is located at center throttle orifice (15)
Outside be uniformly provided with several outer throttle orifices (14) in a ring, the center throttle orifice (15) and outer throttle orifice (14) and throttling
The front and rear surfaces of plate (7) are designed with 45 ° of chamfering.
5. double chamfering wear resistance balance orifice plate differential pressure devices according to claim 1, it is characterised in that: the choke block (7)
Top be separately connected through a screw thread mode and be equipped with one and hang handle (9).
6. double chamfering wear resistance balance orifice plate differential pressure devices according to claim 5, it is characterised in that: the choke block (7)
The center of circle and the center of circle of upstream orifice flange (1) and downstream orifice flange (2) be held on same horizontal line.
7. double chamfering wear resistance balance orifice plate differential pressure devices according to claim 3, it is characterised in that: the gasket seal
(8) internal diameter is two millimeters bigger than the internal pipeline diameter of upstream orifice flange (1) and downstream orifice flange (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920123987.4U CN209342164U (en) | 2019-01-24 | 2019-01-24 | Double chamfering wear resistance balance orifice plate differential pressure devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920123987.4U CN209342164U (en) | 2019-01-24 | 2019-01-24 | Double chamfering wear resistance balance orifice plate differential pressure devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209342164U true CN209342164U (en) | 2019-09-03 |
Family
ID=67762096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920123987.4U Active CN209342164U (en) | 2019-01-24 | 2019-01-24 | Double chamfering wear resistance balance orifice plate differential pressure devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209342164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486909A (en) * | 2020-05-11 | 2020-08-04 | 上海科洋科技股份有限公司 | Uniform speed plate and flow meter |
-
2019
- 2019-01-24 CN CN201920123987.4U patent/CN209342164U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486909A (en) * | 2020-05-11 | 2020-08-04 | 上海科洋科技股份有限公司 | Uniform speed plate and flow meter |
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