CN203837752U - Orifice plate flowmeter - Google Patents

Orifice plate flowmeter Download PDF

Info

Publication number
CN203837752U
CN203837752U CN201420005549.5U CN201420005549U CN203837752U CN 203837752 U CN203837752 U CN 203837752U CN 201420005549 U CN201420005549 U CN 201420005549U CN 203837752 U CN203837752 U CN 203837752U
Authority
CN
China
Prior art keywords
pipeline
orifice plate
flowmeter
orifice
mouth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420005549.5U
Other languages
Chinese (zh)
Inventor
皮大峰
朱江
黄枋庆
李永华
孟全生
黄本录
赵阳
李国华
韩锦泰
牛德草
赫雷
蔡德亭
田振
杨轲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebi Coal Electricity Inc Co Tenth Colliery
Original Assignee
Hebi Coal Electricity Inc Co Tenth Colliery
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebi Coal Electricity Inc Co Tenth Colliery filed Critical Hebi Coal Electricity Inc Co Tenth Colliery
Priority to CN201420005549.5U priority Critical patent/CN203837752U/en
Application granted granted Critical
Publication of CN203837752U publication Critical patent/CN203837752U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an orifice plate flowmeter. The orifice plate flowmeter comprises an orifice plate (1), pipe sections (2), flanges (3), measuring nozzles (4) and measuring nozzle covers (5). The pipe sections (2) include the first pipe section and the second pipe section, one end of the first pipe section is connected with one end of the second pipe section through the orifice plate (1) in a welded mode, the flanges (3) are welded to the other end of the first pipe section and the other end of the second pipe section respectively, the measuring nozzles (4) are further arranged on the pipe sections (2) respectively, and the measuring nozzle covers are arranged on the measuring nozzles. By the adoption of the structure, the orifice plate flowmeter is tight in sealing, free of gas leakage, simple in structure and easy and convenient to install.

Description

Orifice flowmeter
Technical field
The utility model relates to a kind of flowmeter, especially orifice flowmeter.
Background technology
Its orifice plate installation need two ring flanges of the orifice flowmeter of prior art add leather packing screw and connect, and easily produce the problem of poorly sealed gas leakage, and complex structure, and installation difficulty is large.
Utility model content
The technical problems to be solved in the utility model is the problem of the poorly sealed gas leakage of orifice flowmeter of the prior art, complex structure, and installation difficulty is large.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
The utility model orifice flowmeter, comprise orifice plate, pipeline section, ring flange, survey mouth and survey mouth lid, pipeline section comprises the first pipeline section and the second pipeline section, one end of the first pipeline section is welded to connect by one end of orifice plate and the second pipeline section, the other end of the other end of the first pipeline section and the second pipeline section is all welded with ring flange, on pipeline section, be welded with survey mouth, survey mouth and be provided with survey mouth lid, adopt this structure to avoid the problem of leaking gas between orifice plate and pipeline section.
As a kind of preferred version, survey mouth lid and be threaded with surveying mouth, can protect to surveying mouth the problem of further having avoided again air-flow to spill from surveying mouth by surveying mouth lid.
The plectane of perforate centered by orifice plate, orifice plate outside diameter is greater than pipeline section diameter, and orifice plate diameter of bore is less than pipeline section diameter, changes air pressure by the endoporus of orifice plate.
Surveying mouth number has two to be separately positioned on double section tube section top, for the pressure reduction at measuring diaphragm two ends.
The utility model patent orifice fitting adopts electrical pads welding technology by orifice plate and the direct firm welding of pipeline, seals the tight phenomenon that leaks air of avoiding installing; Utilize vernier caliper location, measure and guarantee that orifice plate welded and installed is accurate; Waste and old pipeline utilization, can process in standardization mass production; Economical and practical, save Master Cost and save 2 ring flanges, 2 leather packings, 6 screws, single independence can be installed; Simple installation understands, the minimizing of technical operation content; Employee's work mistake of avoiding easy to operate; Survey mouth portion and effectively protected, avoid bad sealing real.
The advantage of orifice flowmeter of the present utility model is that orifice plate and pipeline section adopt welding in sum, has overcome the problem of the poorly sealed gas leakage of the existing orifice flowmeter of aforementioned prior art, simple in structure, simple installation.
Brief description of the drawings
Fig. 1 is the utility model vertical view.
Fig. 2 is the utility model front elevation.
Fig. 3 is the utility model side view.
Embodiment
As shown in Figures 1 to 3, the utility model orifice flowmeter comprises that orifice plate 1, pipeline section 2, ring flange 3, survey mouth 4, survey mouth lid 5 form, pipeline section 2 comprises the first pipeline section and the second pipeline section, one end of the first pipeline section is welded to connect by one end of orifice plate 1 and the second pipeline section, the other end of the other end of the first pipeline section and the second pipeline section is all welded with ring flange 3, and the card of ring flange is evenly distributed with six circular holes that pass through for nut.
Pipeline section 2 is provided with surveys mouth 4, and flowmeter is surrounded by leather hose outward and is placed on and surveys in mouth 4, is used for measurement gas flow, and described survey mouth 4 numbers have two to be separately positioned on double section tube section 2 tops, with the gas flow of measuring diaphragm both sides.
On survey mouth 4, be provided with and survey mouth lid 5; as a kind of preferred version, to survey mouth lid 5 and be threaded with surveying mouth 4, this dismountable being fixedly connected with can be protected the flowmeter of surveying in mouth on the one hand in the time installing; also bring and sealed tight effect on the other hand, made the measurement result of flowmeter more accurate.
The plectane of perforate centered by orifice plate 1, its outside diameter is greater than pipeline section diameter, and orifice plate 1 diameter of bore is less than pipeline section 2 diameters, the axis coaxle of orifice plate 1 axis and pipeline section 2.Owing to having adopted electric welding technology by orifice plate and the direct firm welding of pipeline section, seal the tight phenomenon that leaks air of avoiding installing.
The principle of work of the utility model orifice flowmeter: in the time of the orifice plate of gas flow in pipeline section, a fluid stream will form local contraction, under the constant condition of total head, shrinks and makes that flow velocity increases, static pressure declines, and just can produce differential static pressure before and after choke block.Under the condition of same pipeline section cross section, the flow of gas is larger, and the pressure reduction of generation is also larger, thereby can determine gas flow by measuring pressure reduction.
The utility model orifice flowmeter, because each parts are all welding, forms into an entirety, installs just as taking at ordinary times road, has reduced the technical difficulty while installation, easy installation procedure.
By reference to the accompanying drawings preferred implementation of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, as long as adopt the form of orifice plate and pipeline section welding all to fall among protection domain of the present utility model.

Claims (5)

1. an orifice flowmeter, it is characterized in that: comprise orifice plate (1), pipeline section (2), ring flange (3), survey mouth (4) and survey mouth lid (5), pipeline section (2) comprises the first pipeline section and the second pipeline section, one end of the first pipeline section is welded to connect by orifice plate (1) and one end of the second pipeline section, the other end of the other end of the first pipeline section and the second pipeline section is all welded with ring flange (3), pipeline section (2) is provided with surveys mouth (4), surveys mouth (4) and is provided with survey mouth lid (5).
2. orifice flowmeter according to claim 1, is characterized in that: the plectane of perforate centered by described orifice plate (1).
3. orifice flowmeter according to claim 2, is characterized in that: described orifice plate (1) outside diameter is greater than pipeline section diameter, and orifice plate diameter of bore is less than pipeline section diameter.
4. orifice flowmeter according to claim 1, is characterized in that: described survey mouth (4) number has two to be separately positioned on double section tube section (2) top.
5. orifice flowmeter according to claim 1, is characterized in that: described survey mouth lid (5) is threaded with survey mouth (4).
CN201420005549.5U 2014-01-06 2014-01-06 Orifice plate flowmeter Expired - Fee Related CN203837752U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420005549.5U CN203837752U (en) 2014-01-06 2014-01-06 Orifice plate flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420005549.5U CN203837752U (en) 2014-01-06 2014-01-06 Orifice plate flowmeter

Publications (1)

Publication Number Publication Date
CN203837752U true CN203837752U (en) 2014-09-17

Family

ID=51515577

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420005549.5U Expired - Fee Related CN203837752U (en) 2014-01-06 2014-01-06 Orifice plate flowmeter

Country Status (1)

Country Link
CN (1) CN203837752U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140917

Termination date: 20150106

EXPY Termination of patent right or utility model