CN105136227A - Differential-pressure amplifying mechanism capable of preventing precipitation liquid against enrichment - Google Patents
Differential-pressure amplifying mechanism capable of preventing precipitation liquid against enrichment Download PDFInfo
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- CN105136227A CN105136227A CN201510500062.3A CN201510500062A CN105136227A CN 105136227 A CN105136227 A CN 105136227A CN 201510500062 A CN201510500062 A CN 201510500062A CN 105136227 A CN105136227 A CN 105136227A
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- orifice plate
- flange
- pressure
- pore plate
- enrichment
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Abstract
The invention discloses a differential-pressure amplifying mechanism capable of preventing precipitation liquid against enrichment. The differential-pressure amplifying mechanism comprises a pore plate and a pipe section used for connecting a metering device with a pipeline. The conveying pore plate is fixed into the pipe section which is two flanges with axes on the same straight line. The two flanges are connected by means of connection bolts. The pore plate is clamped between the two pieces of flanges. Each piece of flange is fixed with a pressure-drawing pipe disposed between the pore plate and a free end of each piece of the flange. The pore plate is disposed between two pressure-drawing pipes. The pressure-drawing pipes are communicated with fluid circulating space of corresponding flanges. An annular clamping groove is arranged on at least one flange. The pore plate is clamped into the above clamping groove and is in the shape of a disk. The external diameter of the pore plate is equal to the internal diameter of the above clamping groove. Water permeability holes are arranged in the pore plate. The differential-pressure amplifying mechanism capable of preventing precipitation liquid against enrichment has following beneficial effects: a simple structure is obtained; fine interchangeability is obtained for different fluid states; and excessively large resistance and decrease in accuracy of flow measurement are avoided by preventing precipitation liquid from enriching on a pipeline.
Description
Technical field
The present invention relates to fluid-transferring pipe piece apparatus field, particularly relate to a kind of pressure reduction enlarger avoiding lye enrichment.
Background technology
Orifice flowmeter is the flow measurement device without scale, it and pneumatic, electric differential pressure transmitter or bi-bellow differential pressure transmitter support the use, usually by transmitter, this pressure reduction signal is converted to the output signal of ratio, again by secondary instrument or regulator, record is carried out to measured flow, instruction or adjustment.The principle of orifice flowmeter is for load onto the throttling element such as orifice plate or nozzle at pipe interior, and because the aperture of throttling element is less than internal diameter of the pipeline, when fluid flows through throttling element, the sudden contraction of flow velocity cross section, flow velocity is accelerated.The static pressure of throttling element rear end fluid reduces, so produce static pressure difference before and after throttling element, has the numerical relation determined between the fluid flow that this static pressure is crossed.Measure the differential pressure before and after throttling element with differential pressure transmitter, realize the measurement to flow.
Although orifice flowmeter uses widely because its structure simply obtains, because it is comparatively large to the drag effects of pipeline, according to the fluid state parameter of reality, adopts suitable throttling form, have the economic target that interests lift line fluid is carried.Simultaneously, in natural-gas field recovery process, along with the continuous increase of the exploitation time limit, in gas well output object, impurity content can increase gradually, and above impurity is liquid hydrocarbon and the water of condensation usually, and such rock gas is called as condensation rock gas, the liquid hydrocarbon of more than separating out and water are easily enriched in the front end of orifice plate, not only affect the negotiability of pipeline, affect because lye is to the change of circulation spatial form simultaneously, cause orifice flowmeter income value error outside allowed band.
Summary of the invention
Although use widely because its structure simply obtains for above described holes flowmeter, because it is comparatively large to the drag effects of pipeline, according to the fluid state parameter of reality, adopts suitable throttling form, have the economic target that interests lift line fluid is carried; When for condensation gas medium flow detection, not only measuring accuracy is low for it, will affect the problem of the negotiability of pipeline simultaneously, the invention provides a kind of pressure reduction enlarger avoiding lye enrichment.
For the problems referred to above, a kind of pressure reduction enlarger of lye enrichment of avoiding provided by the invention reaches goal of the invention by following technical essential: a kind of pressure reduction enlarger avoiding lye enrichment, the pipeline section comprising orifice plate and be connected with pipeline for this measuring apparatus, conveying orifice plate is fixed in described pipeline section, described pipeline section is two panels axis flange on the same line, two panels flange is connected by coupling bolt, described orifice plate is clamped between two panels flange, and every sheet flange is all fixed with at orifice plate and the pressure guiding pipe separately between free end, and orifice plate is between the pressure guiding pipe described in two, described pressure guiding pipe communicates with the fluid free air space of companion flange,
Have at least on a flange and be provided with ringwise draw-in groove, described orifice plate is held in draw-in groove, and orifice plate is in the form of annular discs, and the external diameter of orifice plate is equal with the internal diameter of draw-in groove; Described orifice plate is also provided with the permeable hole running through self both sides, the axis of described permeable hole and the axis being parallel of flange.
In above structure, by all arranging pressure guiding pipe on two panels flange, orifice plate is clamped in the version between two panels flange, after absent-mindedness coupling bolt can be made, the fluid flow state in pipeline is used according to reality, change different orifice plates and not only meet the needs of pressure metering to pressure differential in two pressure guiding pipes to make the present invention, the resistance to flow of little increase line fluid can be measured to the greatest extent simultaneously.Adopt the version that draw-in groove is set at least one flange, be convenient to the position of fixing orifice plate relative to each flange, be conducive to making the axis of orifice plate and the dead in line of this pipeline section of fluid line, be beneficial to the homogeneity of each symmetric points fluid flowing on pipeline section, be beneficial to the measuring accuracy of power invention.
The version of permeable hole is set, the present invention can be realized for easily separating out in the gaseous fluid differential pressure flow metering process of liquid, the precipitation liquid being enriched in orifice plate front end can be flow to the rear end of orifice plate under differential pressure by permeable hole, like this, can effectively avoid because of enrichment lye and the cross sectional shape of alter flow line or reduce this variable of above cross sectional shape, before being beneficial to orifice plate, rear fluid in flow process each point flow velocity relative to the symmetry of aperture plate center line, reach the orifice plate front position enrichment lye avoided at pipeline, reduce the object of pipe resistance and raising orifice-plate flowmeter measuring accuracy.
Further technical scheme is:
Time in a fluid containing hard impurity, for reducing above impurity when flowing through orifice plate and the interaction strength of orifice plate, be beneficial to measuring accuracy, described orifice plate is also provided with center pit, the two ends of described center pit are provided with circular arc chamfering.
In a fluid containing hard impurity time, for reduce above impurity when flowing through orifice plate and the interaction of orifice plate on the impact of aerial cross sectional shape that orifice plate circulates, described orifice plate is also provided with center pit, and described center pit is circular isometrical hole.
Static seal effect for the benefit of between orifice plate and flange, the joint face of described orifice plate and two panels flange is provided with O-ring seal.
For improving above static seal effect further, the joint face of described orifice plate and two panels flange is provided with tongue-and-groove.
As a kind of version being beneficial to fluid homogeneity on pipe cross-sectional, more than one of described permeable hole, and permeable hole is uniform in the form of a ring relative to the axis of flange, and the permeable hole be positioned at bottom is tangent or crossing with the bottom of flange free air space.Above structure is conducive to the accuracy of measurement result.
The present invention has following beneficial effect:
1, structure of the present invention is simple, by all arranging pressure guiding pipe on two panels flange, orifice plate is clamped in the version between two panels flange, after absent-mindedness coupling bolt can be made, the fluid flow state in pipeline is used according to reality, change different orifice plates and not only meet the needs of pressure metering to pressure differential in two pressure guiding pipes to make the present invention, the resistance to flow of little increase line fluid can be measured to the greatest extent simultaneously.
2, the version that draw-in groove is set at least one flange is adopted, be convenient to the position of fixing orifice plate relative to each flange, be conducive to making the axis of orifice plate and the dead in line of this pipeline section of fluid line, be beneficial to the homogeneity of each symmetric points fluid flowing on pipeline section, be beneficial to the measuring accuracy of power invention.
3, the version of permeable hole is set, the present invention can be realized for easily separating out in the gaseous fluid differential pressure flow metering process of liquid, the precipitation liquid being enriched in orifice plate front end can be flow to the rear end of orifice plate under differential pressure by permeable hole, like this, can effectively avoid because of enrichment lye and the cross sectional shape of alter flow line or reduce this variable of above cross sectional shape, before being beneficial to orifice plate, rear fluid in flow process each point flow velocity relative to the symmetry of aperture plate center line, reach the orifice plate front position enrichment lye avoided at pipeline, reduce the object of pipe resistance and raising orifice-plate flowmeter measuring accuracy.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation avoiding a pressure reduction enlarger specific embodiment of lye enrichment of the present invention.
Label shown in accompanying drawing is respectively: 1, flange, and 2, pressure guiding pipe, 3, coupling bolt, 4, draw-in groove, 5, orifice plate, 51, permeable hole.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but structure of the present invention is not limited only to following examples.
Embodiment 1:
As shown in Figure 1, a kind of pressure reduction enlarger avoiding lye enrichment, the pipeline section comprising orifice plate 5 and be connected with pipeline for this measuring apparatus, conveying orifice plate 5 is fixed in described pipeline section, described pipeline section is two panels axis flange 1 on the same line, two panels flange 1 is connected by coupling bolt 3, described orifice plate 5 is clamped between two panels flange 1, and every sheet flange 1 is all fixed with at orifice plate 5 and the pressure guiding pipe 2 separately between free end, and orifice plate 5 is between the pressure guiding pipe 2 described in two, described pressure guiding pipe 2 communicates with the fluid free air space of companion flange 1;
Have at least on a flange 1 and be provided with ringwise draw-in groove 4, described orifice plate 5 is held in draw-in groove 4, and orifice plate 5 is in the form of annular discs, and the external diameter of orifice plate 5 is equal with the internal diameter of draw-in groove 4; Described orifice plate 5 is also provided with the permeable hole 51 running through self both sides, the axis of described permeable hole 51 and the axis being parallel of flange 1.
In the present embodiment, by all arranging pressure guiding pipe 2 on two panels flange 1, orifice plate 5 is clamped in the version between two panels flange 1, after absent-mindedness coupling bolt 3 can be made, the fluid flow state in pipeline is used according to reality, change different orifice plates 5 and not only meet the needs of pressure metering to pressure differential in two pressure guiding pipes 2 to make the present invention, the resistance to flow of little increase line fluid can be measured to the greatest extent simultaneously.Adopt the version that draw-in groove 4 is set at least one flange 1, be convenient to the position of fixing orifice plate 5 relative to each flange 1, be conducive to making the axis of orifice plate 5 and the dead in line of this pipeline section of fluid line, be beneficial to the homogeneity of each symmetric points fluid flowing on pipeline section, be beneficial to the measuring accuracy of power invention.
The version of permeable hole 51 is set, the present invention can be realized for easily separating out in the gaseous fluid differential pressure flow metering process of liquid, the precipitation liquid being enriched in orifice plate 5 front end can be flow to the rear end of orifice plate 5 under differential pressure by permeable hole 51, like this, can effectively avoid because of enrichment lye and the cross sectional shape of alter flow line or reduce this variable of above cross sectional shape, before being beneficial to orifice plate 5, rear fluid in flow process each point flow velocity relative to the symmetry of orifice plate 5 center line, reach the orifice plate 5 front position enrichment lye avoided at pipeline, reduce the object of pipe resistance and raising orifice-plate flowmeter measuring accuracy.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, time in a fluid containing hard impurity, for reducing above impurity when flowing through orifice plate 5 and the interaction strength of orifice plate 5, be beneficial to measuring accuracy, described orifice plate 5 is also provided with center pit, and the two ends of described center pit are provided with circular arc chamfering.
In a fluid containing hard impurity time, for reduce above impurity when flowing through orifice plate 5 and the interaction of orifice plate 5 on the impact of aerial cross sectional shape that orifice plate 5 circulates, described orifice plate 5 is also provided with center pit, and described center pit is circular isometrical hole.
Static seal effect for the benefit of between orifice plate 5 and flange 1, described orifice plate 5 and the joint face of two panels flange 1 are provided with O-ring seal.
For improving above static seal effect further, described orifice plate 5 and the joint face of two panels flange 1 are provided with tongue-and-groove.
Embodiment 3:
The basis of any one technical scheme that the present embodiment provides in any one embodiment above is further qualified, as shown in Figure 1, more than one of described permeable hole 51, and permeable hole 51 is uniform in the form of a ring relative to the axis of flange 1, and the permeable hole 51 be positioned at bottom is tangent or crossing with the bottom of flange 1 free air space.
Above content is the further description done the present invention in conjunction with concrete preferred implementation, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other embodiments drawn under technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (6)
1. can avoid the pressure reduction enlarger of lye enrichment for one kind, the pipeline section comprising orifice plate (5) and be connected with pipeline for this measuring apparatus, conveying orifice plate (5) is fixed in described pipeline section, it is characterized in that, described pipeline section is two panels axis flange on the same line (1), two panels flange (1) is connected by coupling bolt (3), described orifice plate (5) is clamped between two panels flange (1), and every sheet flange (1) is all fixed with the pressure guiding pipe (2) be positioned between orifice plate (5) and respective free end, and orifice plate (5) is positioned between the pressure guiding pipe (2) described in two, described pressure guiding pipe (2) communicates with the fluid free air space of companion flange (1),
Have at least on a flange (1) and be provided with ringwise draw-in groove (4), described orifice plate (5) is held in draw-in groove (4), and orifice plate (5) is in the form of annular discs, and the external diameter of orifice plate (5) is equal with the internal diameter of draw-in groove (4); Described orifice plate (5) is also provided with the permeable hole (51) running through self both sides, the axis of described permeable hole (51) and the axis being parallel of flange (1).
2. a kind of pressure reduction enlarger avoiding lye enrichment according to claim 1, it is characterized in that, (5) are also provided with center pit to described orifice plate, and the two ends of described center pit are provided with circular arc chamfering.
3. a kind of pressure reduction enlarger avoiding lye enrichment according to claim 1, it is characterized in that, (5) are also provided with center pit to described orifice plate, and described center pit is circular isometrical hole.
4. a kind of pressure reduction enlarger avoiding lye enrichment according to claim 1, is characterized in that, described orifice plate (5) and the joint face of two panels flange (1) are provided with O-ring seal.
5. a kind of pressure reduction enlarger avoiding lye enrichment according to claim 1, is characterized in that, described orifice plate (5) and the joint face of two panels flange (1) are provided with tongue-and-groove.
6. a kind of pressure reduction enlarger avoiding lye enrichment as claimed in any of claims 1 to 5, it is characterized in that, more than one of described permeable hole (51), and permeable hole (51) is uniform in the form of a ring relative to the axis of flange (1), and the permeable hole (51) be positioned at bottom is tangent or crossing with the bottom of flange (1) free air space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500062.3A CN105136227A (en) | 2015-08-17 | 2015-08-17 | Differential-pressure amplifying mechanism capable of preventing precipitation liquid against enrichment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500062.3A CN105136227A (en) | 2015-08-17 | 2015-08-17 | Differential-pressure amplifying mechanism capable of preventing precipitation liquid against enrichment |
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| Publication Number | Publication Date |
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| CN105136227A true CN105136227A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510500062.3A Pending CN105136227A (en) | 2015-08-17 | 2015-08-17 | Differential-pressure amplifying mechanism capable of preventing precipitation liquid against enrichment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7051765B1 (en) * | 2003-12-19 | 2006-05-30 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Balanced orifice plate |
| CN201034649Y (en) * | 2007-04-20 | 2008-03-12 | 项家从 | Semi-ring voltage equalizing type flange pressure sampling stephanoporate hole plate flow rate sensor |
| CN201707077U (en) * | 2010-05-21 | 2011-01-12 | 上海华强浮罗仪表有限公司 | Balance flow meter |
| CN102435236A (en) * | 2011-11-04 | 2012-05-02 | 南通醋酸纤维有限公司 | Flow meter of perforated plate |
| CN204924342U (en) * | 2015-08-17 | 2015-12-30 | 成都国光电子仪表有限责任公司 | Can reduce pressure differential mechanism of amplification of lye influence |
-
2015
- 2015-08-17 CN CN201510500062.3A patent/CN105136227A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7051765B1 (en) * | 2003-12-19 | 2006-05-30 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Balanced orifice plate |
| CN201034649Y (en) * | 2007-04-20 | 2008-03-12 | 项家从 | Semi-ring voltage equalizing type flange pressure sampling stephanoporate hole plate flow rate sensor |
| CN201707077U (en) * | 2010-05-21 | 2011-01-12 | 上海华强浮罗仪表有限公司 | Balance flow meter |
| CN102435236A (en) * | 2011-11-04 | 2012-05-02 | 南通醋酸纤维有限公司 | Flow meter of perforated plate |
| CN204924342U (en) * | 2015-08-17 | 2015-12-30 | 成都国光电子仪表有限责任公司 | Can reduce pressure differential mechanism of amplification of lye influence |
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Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |