CN103308104A - Build-in balance flowmeter - Google Patents
Build-in balance flowmeter Download PDFInfo
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- CN103308104A CN103308104A CN2013102025653A CN201310202565A CN103308104A CN 103308104 A CN103308104 A CN 103308104A CN 2013102025653 A CN2013102025653 A CN 2013102025653A CN 201310202565 A CN201310202565 A CN 201310202565A CN 103308104 A CN103308104 A CN 103308104A
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- differential pressure
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- pressure transmitter
- pipeline
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Abstract
The invention provides a build-in balance flowmeter, which comprises a differential pressure transmitter, a multihole disk throttling current rectifier, a bracket pipeline, and a tri-valve set, wherein the differential pressure transmitter comprises a positive pressure chamber, a sylphon, a negative pressure chamber, and air outlets; the a balance plate bracket is arranged on the periphery of the bracket pipeline; a main body of the multihole disk throttling current rectifier is positioned in the bracket pipeline; the periphery of the multihole disk throttling current rectifier is fixed on the bracket pipeline through the balance plate bracket; the bracket pipeline is connected with the positive pressure chamber and the negative pressure chamber of the differential pressure transmitter directly or through a build-in pressure leading hole positioned on the bracket pipeline and via a build-in pressure leading pipe and the tri-valve set. The flowmeter has the advantages of providing a flow measuring instrument with high accuracy, and stable property for measuring a small pipe diameter and a small micrometeor to avoid the disadvantages of lower accuracy, and higher requirement for fluid medium in the process of measuring the small pipe diameter and the small micrometeor by a normal flow instrument in the prior art.
Description
Technical field
The present invention relates to a kind of differential pressure type flow instrument, particularly disclose a kind of built-in balance flow meter.
Background technology
The measurement of the little micrometeor of pipe with small pipe diameter occupies considerable status in flow measurement, its Measurement accuracy is difficult to solve always.Using at present more widely, instrument has: spinner-type flowmeter, volumeter, speed mode propeller flowmeter, standard orifice flow meter etc.From user's operating position, they are not very desirable in the application of industry spot, mainly have the factor of these several aspects: 1) exist movable member the faults such as stuck easily to occur in industry spot is used; 2) fluid medium has relatively high expectations; 3) be difficult to satisfy the measurement of on-the-spot medium and small micrometeor; 4) accuracy is lower.
Summary of the invention
The object of the invention is to is for the shortcoming of common discharge instrument in the prior art to the appearance in the little micro-flow measurement process of pipe with small pipe diameter, provide a kind of fluid balance that can realize to measure, obvious formation, reduction dead time effect, the loss of minimizing fluid dynamic energy that reduces eddy current, the built-in balance flow meter of the pressure point signal fluctuation that the reduction eddy current brings.
The present invention is achieved in that a kind of built-in balance flow meter, comprise differential pressure transmitter, porous disc throttling rectifier, support pipeline, three valve groups, comprise plemum, bellows, negative pressure chamber, vent port in the described differential pressure transmitter, it is characterized in that: described support pipeline periphery is provided with the balance plate support, the main body of described porous disc throttling rectifier is arranged in the support pipeline, and the periphery of described porous disc throttling rectifier is fixed on the support pipeline by the balance plate support; Described support pipeline directly links to each other with the positive and negative pressure chamber of described differential pressure transmitter or links to each other with the positive and negative pressure chamber of described differential pressure transmitter via built-in pressure guiding pipe, three valve groups by the built-in tracting pressuring hole that is positioned on the support pipeline.
When described support pipeline links to each other with the positive and negative pressure chamber of described differential pressure transmitter via built-in pressure guiding pipe, three valve groups by being positioned at built-in tracting pressuring hole on the support pipeline, described porous disc throttling rectifier and support pipeline be common to consist of the straight-through assembly of measuring, and described straight-through measurement assembly is the through type connection by the three valve groups connecting mode that forms that links to each other with the positive/negative-pressure chamber of described differential pressure transmitter; When described support pipeline during directly with the positive and negative pressure chamber of described differential pressure transmitter, the positive and negative pressure chamber of described support pipeline and differential pressure transmitter is connected as a single entity, and the connecting mode that forms between the ducted porous disc throttling of support rectifier and support pipeline, the differential pressure transmitter is inserted the connection.
When the built-in tracting pressuring hole that described support pipeline is provided with by the support pipeline links to each other with the positive and negative pressure chamber of described differential pressure transmitter via built-in pressure guiding pipe, three valve groups, the axis of described support pipeline is mutually vertical with place, described positive and negative pressure chamber axis, is respectively equipped with a built-in tracting pressuring hole on the support pipeline of described porous disc throttling rectifier both sides; Described balance plate support is divided into support piping connection portion and differential pressure transmitter coupling part, wherein the support piping connection portion is positioned at described support pipeline periphery for fixing described porous disc throttling rectifier, and described differential pressure transmitter coupling part links to each other with the outside of described differential pressure transmitter by three valve groups.
Be provided with packing washer between the periphery of described balance plate support and described porous disc throttling rectifier.
Principle of work of the present invention is the same with the standard restriction device, is as the basis take Bernoulli equation and Fluid Flow in A continuity law.When the porous disc throttling rectifier of the flow that is full of pipeline in pipeline, a fluid stream will form at porous disc throttling rectifier place local contraction, thereby flow velocity is increased, static pressure reduces, so before and after porous disc throttling rectifier, just produced Pressure Drop, by pressure differential, the just size of measurable flow amount.
Porous disc throttling rectifier is fixed on the support pipeline, and there is not movable member in total, with volumeter and speed mode propeller flowmeter relatively, when measuring the fluid with solid particle wearing and tearing little, the life-span is long.
In the prior art, fluid has different speed behind the through hole by orifice plate, and velocity contrast causes forming a large amount of eddy current behind orifice plate, and a part of kinetic energy rejection causes the permanent compression loss in eddy current.A large amount of eddy current causes the fluid fluctuation, so that the pressure jitter, signal noise uprises.And standard orifice flow meter only has a hole, meeting delay bubble, impurity etc. before orifice plate, formation dead band.The porous disc throttling rectifier of the built-in balance flow meter of the present invention is provided with a plurality of through holes, and bubble and impurity can pass through from each through hole, reduces dead time effect; Simultaneously porous disc throttling rectifier has the effect of rectification, can the balance flow field, reduce the generation of eddy current, and reduce the loss of kinetic energy.Less vortex flow can also reduce the fluctuation of pressure signal.
The invention has the beneficial effects as follows: realize the fluid balance measurement, obviously reduce formation, reduction dead time effect, the loss of minimizing fluid dynamic energy of eddy current, reduce the pressure point signal fluctuation that eddy current brings; The present invention is applicable to the pipeline flow of the following pipeline of internal diameter 50mm and measures, and minimum flow can reach liquid 5kg/h, gas 0.35Nm
3/ h, steam 8.5kg/h.
Description of drawings
Fig. 1 is the inner structure schematic diagram of pipeline of the present invention when directly linking to each other with the positive and negative pressure chamber of described differential pressure transmitter.
Fig. 2 is the inner structure schematic diagram that the support pipeline of embodiments of the invention one is connected with the balance plate support.
Fig. 3 is the external structure side schematic view of the embodiment of the invention one.
Wherein: 1, differential pressure transmitter; 2, porous disc throttling rectifier; 3, support pipeline; 4, plemum; 5, bellows; 6, negative pressure chamber; 7, vent port; 8, balance plate support; 9, packing washer; 10, built-in tracting pressuring hole; 11, built-in pressure guiding pipe; 12, piping connection portion; 13, differential pressure transmitter coupling part; 14, three valve groups.
Embodiment
According to Fig. 1, the present invention includes differential pressure transmitter 1, porous disc throttling rectifier 2, support pipeline 3, comprise plemum 4, bellows 5, negative pressure chamber 6, vent port 7 in the described differential pressure transmitter 1.Described support pipeline 3 peripheries are provided with balance plate support 8, the main body of described porous disc throttling rectifier 2 is arranged in support pipeline 3, the periphery of described porous disc throttling rectifier 2 is fixed on the support pipeline 3 by balance plate support 8, described support pipeline 3 directly links to each other with the plemum 4 of described differential pressure transmitter 1, described plemum 4 forms inserted connecting mode with described support pipeline 3 at same axis, described porous disc throttling rectifier 2 is positioned on the support pipeline 3 in plemum 4 exits and is fixing by balance plate support 8, described support pipeline 3 and described plemum 4, negative pressure chamber 6 is communicated with.Be provided with packing washer 9 between the periphery of described balance plate support 8 and described disk throttling rectifier 2.The direction of arrow is fluid flow direction among the figure.
Embodiment one: according to Fig. 2, Fig. 3, described support pipeline 3 links to each other with plemum 4, the negative pressure chamber 6 of described differential pressure transmitter 1 via built-in pressure guiding pipe 11, three valve groups 14 by the built-in tracting pressuring hole 10 that support pipeline 3 is provided with, the axis of described support pipeline 3 is mutually vertical with described differential pressure transmitter 1 place axis, is respectively equipped with a built-in tracting pressuring hole 10 on the support pipeline 3 of described porous disc throttling rectifier 2 both sides; Described balance plate support 8 is divided into support piping connection portion 12 and differential pressure transmitter coupling part 13, wherein support piping connection portion 12 is positioned at described support pipeline 3 peripheries for fixing described disk throttling rectifier 2, and described support piping connection portion 12 is fixed on porous disc throttling rectifier 2 on the support pipeline 3 by the mode of screw; Described differential pressure transmitter coupling part 13 links to each other with the outside of described differential pressure transmitter 1, and the through type connecting mode that differential pressure transmitter coupling part 13 and support piping connection portion 12 are integrally formed is such as Fig. 3.Be provided with packing washer 9 between the periphery of described balance plate support 8 and described porous disc throttling rectifier 2.The direction of arrow is fluid flow direction among the figure.
Claims (4)
1. built-in balance flow meter, comprise differential pressure transmitter, porous disc throttling rectifier, support pipeline, three valve groups, comprise plemum, bellows, negative pressure chamber, vent port in the described differential pressure transmitter, it is characterized in that: described support pipeline periphery is provided with the balance plate support, the main body of described porous disc throttling rectifier is arranged in the support pipeline, and the periphery of described porous disc throttling rectifier is fixed on the support pipeline by the balance plate support; Described support pipeline directly links to each other with the positive and negative pressure chamber of described differential pressure transmitter or links to each other with the positive and negative pressure chamber of described differential pressure transmitter via built-in pressure guiding pipe, three valve groups by the built-in tracting pressuring hole that is positioned on the support pipeline.
2. described built-in balance flow meter according to claim 1, it is characterized in that: when described support pipeline links to each other with the positive and negative pressure chamber of described differential pressure transmitter via built-in pressure guiding pipe, three valve groups by being positioned at built-in tracting pressuring hole on the support pipeline, described porous disc throttling rectifier and support pipeline be common to consist of the straight-through assembly of measuring, and described straight-through measurement assembly is the through type connection by the three valve groups connecting mode that forms that links to each other with the positive/negative-pressure chamber of described differential pressure transmitter; When described support pipeline during directly with the positive and negative pressure chamber of described differential pressure transmitter, the positive and negative pressure chamber of described support pipeline and differential pressure transmitter is connected as a single entity, and the connecting mode that forms between the ducted porous disc throttling of support rectifier and support pipeline, the differential pressure transmitter is inserted the connection.
3. according to claim 1 or 2 described built-in balance flow meters, it is characterized in that: when the built-in tracting pressuring hole that described support pipeline is provided with by the support pipeline links to each other with the positive and negative pressure chamber of described differential pressure transmitter via built-in pressure guiding pipe, three valve groups, the axis of described support pipeline is mutually vertical with place, described positive and negative pressure chamber axis, is respectively equipped with a built-in tracting pressuring hole on the support pipeline of described porous disc throttling rectifier both sides; Described balance plate support is divided into support piping connection portion and differential pressure transmitter coupling part, wherein the support piping connection portion is positioned at described support pipeline periphery for fixing described porous disc throttling rectifier, and described differential pressure transmitter coupling part links to each other with the outside of described differential pressure transmitter by three valve groups.
4. described built-in balance flow meter according to claim 1 is characterized in that: be provided with packing washer between the periphery of described balance plate support and described porous disc throttling rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102025653A CN103308104A (en) | 2013-05-28 | 2013-05-28 | Build-in balance flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102025653A CN103308104A (en) | 2013-05-28 | 2013-05-28 | Build-in balance flowmeter |
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| CN103308104A true CN103308104A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102025653A Pending CN103308104A (en) | 2013-05-28 | 2013-05-28 | Build-in balance flowmeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759939A (en) * | 2018-05-11 | 2018-11-06 | 福标测量仪表（上海）有限公司 | A kind of flow-measuring method |
| CN113483946A (en) * | 2021-06-01 | 2021-10-08 | 广西防城港核电有限公司 | Water filling and exhausting system and method for differential pressure transmitter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07139977A (en) * | 1993-11-19 | 1995-06-02 | Tokyo Gas Co Ltd | Differential pressure transmitter facility mechanism in corner tap type throttle flowmeter |
| CN2447729Y (en) * | 2000-09-04 | 2001-09-12 | 天津万通电子仪表有限公司 | Built-in orificeplate flowmeter |
| CN201697644U (en) * | 2010-06-28 | 2011-01-05 | 江阴市节流装置厂有限公司 | Integrated differential pressure flowmeter |
| CN203259198U (en) * | 2013-05-28 | 2013-10-30 | 上海华强浮罗仪表有限公司 | Built-in balance flow meter |
-
2013
- 2013-05-28 CN CN2013102025653A patent/CN103308104A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07139977A (en) * | 1993-11-19 | 1995-06-02 | Tokyo Gas Co Ltd | Differential pressure transmitter facility mechanism in corner tap type throttle flowmeter |
| CN2447729Y (en) * | 2000-09-04 | 2001-09-12 | 天津万通电子仪表有限公司 | Built-in orificeplate flowmeter |
| CN201697644U (en) * | 2010-06-28 | 2011-01-05 | 江阴市节流装置厂有限公司 | Integrated differential pressure flowmeter |
| CN203259198U (en) * | 2013-05-28 | 2013-10-30 | 上海华强浮罗仪表有限公司 | Built-in balance flow meter |
Non-Patent Citations (2)
| Title |
|---|
| 吴旭: "LGBK型一体化智能孔板流量计在动力空压站的应用", 《中小企业管理与科技（上旬刊）》, no. 07, 31 December 2010 (2010-12-31), pages 230 * |
| 谌江峰: "内藏孔板流量计的研究", 《自动化与仪器仪表》, no. 81, 31 December 1999 (1999-12-31), pages 41 - 42 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759939A (en) * | 2018-05-11 | 2018-11-06 | 福标测量仪表（上海）有限公司 | A kind of flow-measuring method |
| CN113483946A (en) * | 2021-06-01 | 2021-10-08 | 广西防城港核电有限公司 | Water filling and exhausting system and method for differential pressure transmitter |
| CN113483946B (en) * | 2021-06-01 | 2023-04-28 | 广西防城港核电有限公司 | Water filling and exhausting system and method for differential pressure transmitter |
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Application publication date: 20130918 |