CN106556434A - A kind of metering throttling pipeline section - Google Patents
A kind of metering throttling pipeline section Download PDFInfo
- Publication number
- CN106556434A CN106556434A CN201510626234.1A CN201510626234A CN106556434A CN 106556434 A CN106556434 A CN 106556434A CN 201510626234 A CN201510626234 A CN 201510626234A CN 106556434 A CN106556434 A CN 106556434A
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- orifice plate
- flange
- pipeline section
- panels
- groove
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Abstract
The invention discloses a kind of metering throttling pipeline section, the pipeline section being connected with pipeline including orifice plate and for the metering device, conveying orifice plate is fixed in the pipeline section, the pipeline section is two panels axis flange on the same line, two panels flange is connected by connecting bolt, the orifice plate is clamped between two panels flange, and on every flange, it is respectively and fixedly provided with the pressure guiding pipe between orifice plate and respective free end, and orifice plate, between the pressure guiding pipe described in two, the pressure guiding pipe is communicated with the fluid free air space of companion flange；Draw-in groove in a ring is provided with least one flange, the orifice plate is held in draw-in groove, and orifice plate is in the form of annular discs, the external diameter of orifice plate is equal with the internal diameter of draw-in groove；The bottom of any one flange is also fixedly connected with outlet pipe, and the port of export of the outlet pipe is also associated with drain valve.Present configuration is simple, has good interchangeability for different fluid states, while fluid is little by resistance, pressure accuracy is good.
Description
Technical field
The present invention relates to fluid-transferring pipe piece apparatus field, more particularly to a kind of metering throttling pipeline section.
Background technology
Orifice flowmeter is the flow measurement device without scale, it is supported the use with pneumatic, electric differential pressure transmitter or bi-bellow differential pressure transmitter, the pressure reduction signal is changed into proportional output signal by transmitter generally, again by secondary meter or adjuster, measured flow is recorded, is indicated or is adjusted.The principle of orifice flowmeter is that the throttling elements such as orifice plate or nozzle are loaded onto inside pipeline, and as the aperture of throttling element is less than internal diameter of the pipeline, when fluid stream warp knuckle stream part, the sudden contraction of flow velocity section, flow velocity are accelerated.The static pressure of throttling element rear end fluid is reduced, and then before and after throttling element, generation static pressure is poor, has the numerical relation of determination between the fluid flow that the static pressure is crossed.The differential pressure before and after throttling element is measured with differential pressure transmitter, the measurement to flow is realized.
Orifice flowmeter is because although its simple structure has obtained extensive utilization, but because its drag effects to pipeline is larger, according to actual fluid state parameter, adopts suitable throttling form, the economic indicator for having interests lift line fluid to convey.
The content of the invention
For above-mentioned orifice flowmeter because although its simple structure has obtained extensive utilization, but because its drag effects to pipeline is larger, according to actual fluid state parameter, using suitable throttling form, there is the problem of the economic indicator of interests lift line fluid conveying, the invention provides a kind of metering throttling pipeline section.
For the problems referred to above, a kind of metering that the present invention is provided reaches goal of the invention by following technical essential with throttling pipeline section：A kind of metering throttling pipeline section, the pipeline section being connected with pipeline including orifice plate and for the metering device, conveying orifice plate is fixed in the pipeline section, the pipeline section is two panels axis flange on the same line, two panels flange is connected by connecting bolt, and the orifice plate is clamped between two panels flange, and the pressure guiding pipe between orifice plate and respective free end is respectively and fixedly provided with every flange, and orifice plate, between the pressure guiding pipe described in two, the pressure guiding pipe is communicated with the fluid free air space of companion flange；
Draw-in groove in a ring is provided with least one flange, the orifice plate is held in draw-in groove, and orifice plate is in the form of annular discs, the external diameter of orifice plate is equal with the internal diameter of draw-in groove；The bottom of any one flange is also fixedly connected with the outlet pipe communicated with the fluid free air space of the flange, and the port of export of the outlet pipe is also associated with drain valve.
In above structure, by being respectively provided with pressure guiding pipe on two panels flange, orifice plate is clamped in the version between two panels flange, after absent-mindedness connecting bolt can be caused, according to the fluid flow state in actually used pipeline, different orifice plates are changed so that the present invention not only meets pressure and measures needs to pressure differential in two pressure guiding pipes, while the flow resistance of little increase pipeline fluid can be measured to the greatest extent.Using the version that draw-in groove is arranged at least one flange, it is easy to fix position of the orifice plate relative to each flange, the axis of orifice plate and the dead in line of the fluid line pipeline section are advantageously allowed, beneficial to the uniformity of each symmetric points flow of fluid on pipeline section, beneficial to the certainty of measurement of power invention.
Above structure is when in use, the front end of one end and fluid line for being provided with outlet pipe is welded to connect, outlet pipe is arranged on into vertical direction preferably simultaneously, so, the present invention is for during the such as gas dosing of condensation natural gas or compressed-air line, the condensed water or other liquid mediums for being enriched in orifice plate front end smoothly can be discharged by outlet pipe, so not only beneficial to the resistance for reducing pipeline, simultaneously beneficial to during fluid flow through orifices plate on pipeline section flow regime uniformity, beneficial to pressure sensor by pressure guiding pipe pressure accuracy.
Further technical scheme is：
When containing hard impurity in a fluid, it is the interaction strength for reducing above impurity when orifice plate is flowed through with orifice plate, is beneficial to certainty of measurement, on the orifice plate, is additionally provided with centre bore, the two ends of the centre bore is provided with circular arc chamfering.
When containing hard impurity in a fluid, it is the impact for reducing above impurity when orifice plate is flowed through with the interaction of orifice plate to the logical aerial cross sectional shape of stream on orifice plate, on the orifice plate, is additionally provided with centre bore, the centre bore is circular isometrical hole.
For the benefit of the static seal effect between orifice plate and flange, is provided with sealing ring on the orifice plate and the joint face of two panels flange.
Further to improve above static seal effect, on the orifice plate and the joint face of two panels flange, tongue-and-groove is provided with.
The invention has the advantages that：
1st, present configuration is simple, by being respectively provided with pressure guiding pipe on two panels flange, orifice plate is clamped in the version between two panels flange, after absent-mindedness connecting bolt can be caused, according to the fluid flow state in actually used pipeline, different orifice plates are changed so that the present invention not only meets pressure and measures needs to pressure differential in two pressure guiding pipes, while the flow resistance of little increase pipeline fluid can be measured to the greatest extent.Using the version that draw-in groove is arranged at least one flange, it is easy to fix position of the orifice plate relative to each flange, the axis of orifice plate and the dead in line of the fluid line pipeline section are advantageously allowed, beneficial to the uniformity of each symmetric points flow of fluid on pipeline section, beneficial to the certainty of measurement of power invention.
2nd, the present invention is for during the such as gas dosing of condensation natural gas or compressed-air line, the condensed water or other liquid mediums for being enriched in orifice plate front end smoothly can be discharged by outlet pipe, so not only beneficial to the resistance for reducing pipeline, simultaneously beneficial to during fluid flow through orifices plate on pipeline section flow regime uniformity, beneficial to pressure sensor by pressure guiding pipe pressure accuracy.
Description of the drawings
Fig. 1 is a kind of structural representation of metering throttling one specific embodiment of pipeline section of the present invention.
Label shown in accompanying drawing is respectively：1st, flange, 2, pressure guiding pipe, 3, connecting bolt, 4, draw-in groove, 5, orifice plate, 6, outlet pipe, 7, drain valve.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but the structure of the present invention is not limited only to following examples.
Embodiment 1：
As shown in Figure 1, a kind of metering throttling pipeline section, the pipeline section being connected with pipeline including orifice plate 5 and for the metering device, conveying orifice plate 5 is fixed in the pipeline section, the pipeline section is two panels axis flange 1 on the same line, two panels flange 1 is connected by connecting bolt 3, the orifice plate 5 is clamped between two panels flange 1, and on every flange 1, it is respectively and fixedly provided with the pressure guiding pipe 2 between orifice plate 5 and respective free end, and orifice plate 5, between the pressure guiding pipe 2 described in two, the pressure guiding pipe 2 is communicated with the fluid free air space of companion flange 1；
Draw-in groove 4 in a ring is provided with least one flange 1, the orifice plate 5 is held in draw-in groove 4, and orifice plate 5 is in the form of annular discs, the external diameter of orifice plate 5 is equal with the internal diameter of draw-in groove 4；The bottom of any one flange 1 is also fixedly connected with the outlet pipe 6 communicated with the fluid free air space of the flange, and the port of export of the outlet pipe 6 is also associated with drain valve 7.
In the present embodiment, by pressure guiding pipe 2 is respectively provided with two panels flange 1, orifice plate 5 is clamped in the version between two panels flange 1, after absent-mindedness connecting bolt 3 can be caused, according to the fluid flow state in actually used pipeline, different orifice plates 5 are changed so that the present invention not only meets pressure and measures needs to pressure differential in two pressure guiding pipes 2, while the flow resistance of little increase pipeline fluid can be measured to the greatest extent.Using the version that draw-in groove 4 is arranged at least one flange 1, it is easy to fix position of the orifice plate 5 relative to each flange 1, advantageously allow the axis of orifice plate 5 and the dead in line of the fluid line pipeline section, beneficial to the uniformity of each symmetric points flow of fluid on pipeline section, beneficial to the certainty of measurement of power invention.
In the present embodiment, outlet pipe 6 is the straight length for being welded in any one 1 lower end of flange, and the axis of the straight length is in vertical direction.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, when containing hard impurity in a fluid, to reduce interaction strength of the above impurity when orifice plate 5 is flowed through with orifice plate 5, it is beneficial to certainty of measurement, centre bore is additionally provided with the orifice plate 5, the two ends of the centre bore are provided with circular arc chamfering.
When containing hard impurity in a fluid, it is the impact for reducing above impurity when orifice plate 5 is flowed through with the interaction of orifice plate 5 to the aerial cross sectional shape that circulates on orifice plate 5, on the orifice plate 5, is additionally provided with centre bore, the centre bore is circular isometrical hole.
For the benefit of the static seal effect between orifice plate 5 and flange 1, is provided with sealing ring on the orifice plate 5 and the joint face of two panels flange 1.
Further to improve above static seal effect, on the orifice plate 5 and the joint face of two panels flange 1, tongue-and-groove is provided with.
Above content is the further description made to the present invention with reference to specific preferred embodiment, it is impossible to 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, the other embodiment drawn under without departing from technical scheme is should be included in protection scope of the present invention.
Claims (5)
1. a kind of metering throttling pipeline section, including orifice plate（5）And the pipeline section being connected with pipeline for the metering device, convey orifice plate（5）It is fixed in the pipeline section, it is characterised in that the pipeline section is two panels axis flange on the same line（1）, two panels flange（1）By connecting bolt（3）It is connected, the orifice plate（5）It is clamped in two panels flange（1）Between, and every flange（1）On be respectively and fixedly provided with positioned at orifice plate（5）With the pressure guiding pipe between respective free end（2）, and orifice plate（5）Positioned at the pressure guiding pipe described in two（2）Between, the pressure guiding pipe（2）With companion flange（1）Fluid free air space communicate；
At least one flange（1）On be provided with draw-in groove in a ring（4）, the orifice plate（5）It is held on draw-in groove（4）In, and orifice plate（5）It is in the form of annular discs, orifice plate（5）External diameter and draw-in groove（4）Internal diameter it is equal；Any one flange（1）Bottom be also fixedly connected with and the flange（1）The outlet pipe that communicates of fluid free air space（6）, the outlet pipe（6）The port of export be also associated with drain valve（7）.
2. a kind of metering according to claim 1 uses throttling pipeline section, it is characterised in that the orifice plate（5）On be additionally provided with centre bore, the two ends of the centre bore are provided with circular arc chamfering.
3. a kind of metering according to claim 1 uses throttling pipeline section, it is characterised in that the orifice plate（5）On be additionally provided with centre bore, the centre bore is circular isometrical hole.
4. a kind of metering according to claim 1 uses throttling pipeline section, it is characterised in that the orifice plate（5）With two panels flange（1）Joint face on be provided with sealing ring.
5. a kind of metering according to claim 1 uses throttling pipeline section, it is characterised in that the orifice plate（5）With two panels flange（1）Joint face on be provided with tongue-and-groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626234.1A CN106556434A (en) | 2015-09-28 | 2015-09-28 | A kind of metering throttling pipeline section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510626234.1A CN106556434A (en) | 2015-09-28 | 2015-09-28 | A kind of metering throttling pipeline section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106556434A true CN106556434A (en) | 2017-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510626234.1A Pending CN106556434A (en) | 2015-09-28 | 2015-09-28 | A kind of metering throttling pipeline section |
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| CN (1) | CN106556434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151811A (en) * | 2018-02-07 | 2018-06-12 | 承德石油高等专科学校 | A kind of novel central symmetry multi-hole orifice flow throttling set |
-
2015
- 2015-09-28 CN CN201510626234.1A patent/CN106556434A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151811A (en) * | 2018-02-07 | 2018-06-12 | 承德石油高等专科学校 | A kind of novel central symmetry multi-hole orifice flow throttling set |
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Application publication date: 20170405 |
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| WD01 | Invention patent application deemed withdrawn after publication |