CN206725021U - The big flow gas flow standard device of modularization metering section - Google Patents
The big flow gas flow standard device of modularization metering section Download PDFInfo
- Publication number
- CN206725021U CN206725021U CN201720527271.1U CN201720527271U CN206725021U CN 206725021 U CN206725021 U CN 206725021U CN 201720527271 U CN201720527271 U CN 201720527271U CN 206725021 U CN206725021 U CN 206725021U
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- metering section
- venturi nozzle
- flow
- standard
- switch valve
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Abstract
The big flow gas flow standard device of the utility model modularization metering section, include preceding straight length, tested flowmeter, rear straight length, standard metering section, vavuum pump, it is characterized in that being connected in parallel with standard metering section (6) provided with least one blocking criteria metering section (6a), automatic control switch valve (13a, 14a) is being respectively equipped with before and after blocking criteria metering section (6a) on parallel pipeline.Adjustment calibrating stream maximum point is coordinated by blocking criteria metering section (6a), standard metering section volume length is substantially reduced, convenient manufacture, reduces floor space, be easy to the extension upgrading of critical flow venturi nozzle method gas flow standard device flow.
Description
Technical field
It is particularly a kind of to be used for greatly the utility model relates to critical flow venturi nozzle method gas flow standard device
The critical flow venturi nozzle method gas flow standard device of flow flowmeter detection.
Background technology
Critical flow venturi nozzle method gas flow standard device include preceding straight length, tested flowmeter, rear straight length,
Temperature, pressure transmitter, standard metering section, vavuum pump at tested flowmeter.
Standard metering section is sprayed by stagnation container, Venturi nozzle, Venturi nozzle temperature, pressure transmitter, venturi
Mouth pipeline automatic control switch valve, exit vessel are formed.
Its standard metering section of above-mentioned prior art is come needed for obtaining by a series of Venturi nozzles in parallel and pipeline
Normal stream value, the calibrating flow point of tested flowmeter by selecting the Venturi nozzle of different flow value to combine acquisition, its
Each Venturi nozzle flow is Geometric Sequence, and common ratio 2, n item sums are Venturi nozzle method gas flow standard devices
Maximum stream flow。
I.e.：
It is maximum by parallel connection increase when the flow rate upper limit increase of critical flow venturi nozzle method gas flow standard device
The mode of Venturi nozzle is realized.
So be connected to the length of the stagnation container of Venturi nozzle front end and the exit vessel of rear end and must accordingly increase,
Enlarged diameter, the volume of stagnation container and exit vessel is greatly increased, cause to fabricate, transport, to install and use difficulty big
Big increase.And the corresponding corresponding increase of Venturi nozzle pipeline automatic control switch valve, cost is further improved, pipeline is automatic
The increase of controlling switch valve, fault rate increase.
Utility model content
The utility model is improved for above-mentioned the deficiencies in the prior art, there is provided a kind of critical flow suitable for big flow
Venturi nozzle method gas flow standard device, that is, provide a kind of big flow critical flow venturi nozzle method of modularization metering section
Gas flow standard device, to facilitate manufacture, reduce manufacturing cost, it is readily transported, installs and uses, is easy to flow extension upgrading.
The utility model critical flow venturi nozzle method gas flow standard device includes preceding straight length 1, tested flow
Meter 2, rear straight length 3, it is detected temperature transmitter 4, pressure transmitter 5, standard metering section 6, vavuum pump 18 at flowmeter；Standard meter
Section 6 is measured by stagnation container 7, Venturi nozzle 8, Venturi nozzle temperature transmitter 9, pressure transmitter 10, Venturi nozzle
Pipeline automatic control switch valve 11, exit vessel 12 are formed；It is in parallel between stagnation container 7 and exit vessel 12 to be provided with multiple literary mounds
In nozzle 8 and Venturi nozzle pipeline automatic control switch valve 11, each flow of Venturi nozzle 8 is Geometric Sequence, and common ratio is
2；
It is characterized in that it is connected in parallel with above-mentioned standard metering section 6 provided with least one blocking criteria metering section 6a, module
Change standard metering section 6a by stagnation container 7a, Venturi nozzle 8a, Venturi nozzle temperature transmitter 9a, pressure transmitter
10a, Venturi nozzle pipeline switch valve 11a, exit vessel 12a are formed, the parallel transistor before and after blocking criteria metering section 6a
Automatic control switch valve 13a, 14a are respectively equipped with road, it is in parallel between stagnation container 7a and exit vessel 12a to be provided with multiple literary mounds
In nozzle 8a and Venturi nozzle pipeline switch valve 11a, each Venturi nozzle 8a flows are Geometric Sequences, common ratio 1.
The utility model is by setting at least one blocking criteria metering section 6a to coordinate the calibrating stream of the tested flowmeter of adjustment
Point is measured, that is, adjusts the maximum stream flow of critical flow venturi nozzle method gas flow standard device, not only accumulates standard metering segment body
Length scale reduces, and convenient manufacture, reduces manufacturing cost, is readily transported, installs and uses, multiple blocking criteria metering section 6a can
Put with layer and be arranged on the top of standard metering section 6, be substantially reduced the floor space of standard metering section.And each blocking criteria meter
Automatic control switch valve need not be set on amount section 6a Venturi nozzle 8a pipelines, only match somebody with somebody regular hand tap valve, to meet to examine
Blinded off a line when repairing, not only greatly reduce using automatic control switch valve and cost, and reduce and automatically control
Increase fault rate caused by switch valve.It is easy to the extension upgrading of critical flow venturi nozzle method gas flow standard device flow.
Brief description of the drawings
Fig. 1 is the utility model embodiment structural representation.
Embodiment
The utility model critical flow venturi nozzle method gas flow standard device includes preceding straight length 1, tested flow
Meter 2, rear straight length 3, it is detected temperature transmitter 4, pressure transmitter 5, standard metering section 6, vavuum pump 18 at flowmeter；Standard meter
Section 6 is measured by stagnation container 7, Venturi nozzle 8, Venturi nozzle temperature transmitter 9, pressure transmitter 10, Venturi nozzle
Pipeline automatic control switch valve 11, exit vessel 12 are formed；It is in parallel between stagnation container 7 and exit vessel 12 to be provided with multiple literary mounds
In nozzle 8 and Venturi nozzle pipeline automatic control switch valve 11, each flow of Venturi nozzle 8 is Geometric Sequence, and common ratio is
2；
It is connected in parallel with above-mentioned standard metering section 6 provided with multiple blocking criteria metering section 6a, blocking criteria metering section
6a is by stagnation container 7a, Venturi nozzle 8a, Venturi nozzle temperature transmitter 9a, pressure transmitter 10a, Venturi nozzle
Pipeline switch valve 11a, exit vessel 12a are formed, and are being respectively equipped with before and after blocking criteria metering section 6a on parallel pipeline certainly
Dynamic controlling switch valve 13a, 14a, it is in parallel between stagnation container 7a and exit vessel 12a to be provided with multiple Venturi nozzle 8a and Wen Qiu
In nozzle line switch valve 11a, each Venturi nozzle 8a flows are Geometric Sequences, common ratio 1.
Because the maximum Venturi nozzle flow that China can examine and determine at present is 1250m3/ h, it is above-mentioned according to this feature
The blocking criteria metering section 6a of embodiment, it is in parallel between stagnation container 7a and exit vessel 12a to be provided with 4 Venturi nozzles
8a, each Venturi nozzle 8a flows are 1250m3/ h, blocking criteria metering section 6a flow are 5000m3/h（4×
1250m3/h）, can fully meet the detection of large-scale gas flowmeter used large-scale gas pipeline.
Claims (2)
1. the big flow gas flow standard device of modularization metering section, include preceding straight length (1), tested flowmeter (2), after
Temperature transmitter (4), pressure transmitter (5), standard metering section (6), vavuum pump (18) at straight length (3), tested flowmeter；Mark
Quasi- metering section (6) is by stagnation container (7), Venturi nozzle (8), Venturi nozzle temperature transmitter (9), pressure transmitter
(10), Venturi nozzle pipeline automatic control switch valve (11), exit vessel (12) are formed；Hold in stagnation container (7) and outlet
It is in parallel between device (12) to be provided with multiple Venturi nozzles (8) and Venturi nozzle pipeline automatic control switch valve (11), each literary mound
In nozzle (8) flow be Geometric Sequence, common ratio 2；
It is characterized in that it is connected in parallel with above-mentioned standard metering section (6) provided with least one blocking criteria metering section (6a), module
Change standard metering section (6a) by stagnation container (7a), Venturi nozzle (8a), Venturi nozzle temperature transmitter (9a), pressure
Transmitter (10a), Venturi nozzle pipeline switch valve (11a), exit vessel (12a) are formed, in blocking criteria metering section
Automatic control switch valve (13a, 14a) is respectively equipped with the front and rear parallel pipeline of (6a), in stagnation container (7a) and exit vessel
It is in parallel between (12a) to be provided with multiple Venturi nozzles (8a) and Venturi nozzle pipeline switch valve (11a), each Venturi nozzle
(8a) flow is Geometric Sequence, common ratio 1.
2. the big flow gas flow standard device of modularization metering section according to claim 1, it is characterized in that, it is described
Blocking criteria metering section (6a), it is in parallel between stagnation container (7a) and exit vessel (12a) to be provided with 4 Venturi nozzles
(8a), each Venturi nozzle 8a flows are 1250m3/ h, the flow of blocking criteria metering section (6a) is 5000m3/h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720527271.1U CN206725021U (en) | 2017-05-12 | 2017-05-12 | The big flow gas flow standard device of modularization metering section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720527271.1U CN206725021U (en) | 2017-05-12 | 2017-05-12 | The big flow gas flow standard device of modularization metering section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725021U true CN206725021U (en) | 2017-12-08 |
Family
ID=60510513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720527271.1U Expired - Fee Related CN206725021U (en) | 2017-05-12 | 2017-05-12 | The big flow gas flow standard device of modularization metering section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220576A (en) * | 2019-07-25 | 2019-09-10 | 浙江裕顺仪表有限公司 | A kind of efficient gas flow standard device that can examine and determine more flowmeters simultaneously |
-
2017
- 2017-05-12 CN CN201720527271.1U patent/CN206725021U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220576A (en) * | 2019-07-25 | 2019-09-10 | 浙江裕顺仪表有限公司 | A kind of efficient gas flow standard device that can examine and determine more flowmeters simultaneously |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20200512 |
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| CF01 | Termination of patent right due to non-payment of annual fee |