CN112683356A - Annular throttling device - Google Patents
Annular throttling device Download PDFInfo
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- CN112683356A CN112683356A CN202110081413.7A CN202110081413A CN112683356A CN 112683356 A CN112683356 A CN 112683356A CN 202110081413 A CN202110081413 A CN 202110081413A CN 112683356 A CN112683356 A CN 112683356A
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- throttling
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- core column
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Abstract
The invention relates to an annular throttling device, which comprises an outer sleeve and an inner core column, wherein the outer sleeve is sleeved on the inner core column; the inner core column comprises an annular throttling groove, an axial throttling groove and a plurality of radial throttling holes, and the annular throttling groove, the axial throttling groove and the plurality of radial throttling holes are communicated into a whole. The inner core column and the outer sleeve are connected together in a threaded or welded mode. The annular throttling groove is a rectangular groove or a circular groove; the axial throttling groove is a rectangular groove or a circular groove. The invention reduces the pressure of the higher pressure medium through the narrow annular and axial throttling grooves and the throttling hole. By using the annular throttling groove, the flowing path of the liquid medium can be greatly increased under the condition that the total length of the outer sleeve is not changed. Thereby improving the purpose of throttling and pressure reduction.
Description
Technical Field
The invention relates to a throttling device, in particular to an annular throttling device which is simple in structure and convenient to use, reduces the pressure of a higher pressure medium through a narrow annular throttling groove, an axial throttling groove and a throttling hole, can greatly increase the flowing path of a liquid medium under the condition that the total length of an outer sleeve is not changed through the use of the annular throttling groove, and can effectively avoid the cavitation phenomenon.
Background
At present, the traditional throttling orifice plate flowmeter is easy to have step pressure drop and generate cavitation phenomena, when high-temperature and high-pressure fluid is measured, the throttling orifice plate flowmeter is easy to deform in structure, the phenomenon of structural change caused by cavitation is easy to occur, the outflow coefficient is unstable, and the measurement accuracy is not high; impurities are easy to deposit in the pore plate; outlet flow field disorder, etc.
The annular flow passage is used, fluid moves forwards in the flow passage under the action of centrifugal force, the pressure is gradually reduced, the step-type pressure reduction of the fluid in the orifice plate flowmeter is avoided, and the cavitation phenomenon can be effectively avoided; (2) when the high-temperature and high-pressure fluid is measured, the annular structure is not easy to deform, the structural change phenomenon caused by cavitation is less generated, the outflow coefficient is stable, and the measurement precision is high; (3) in the closed annular flow channel, the flow channel is continuous, impurities are not easy to deposit in the flow channel, and the internal blockage of the flow channel can be prevented; (4) the fluid basically does not flow back after flowing through the annular throttling device, the defect of disordered flow field at the outlet of the orifice plate flowmeter is overcome, and the scaling condition at the rear end of the flowmeter can be effectively improved, so that the service life of the flowmeter is prolonged; (5) the device body has simple structure and is easy to clean.
Disclosure of Invention
In view of the above problems, the present invention provides an annular throttling device, which has a simple structure and is convenient to use, and can reduce the pressure of a higher pressure medium through a narrow annular and axial throttling groove and a throttling hole, and can greatly increase the flow path of a liquid medium and effectively avoid cavitation through the use of the annular throttling groove under the condition that the total length of an outer sleeve is not changed.
The invention solves the technical problems through the following technical scheme: an annular throttle device, comprising: the outer sleeve is sleeved on the inner core column; the inner leg includes: the annular throttling groove, the axial throttling groove and the plurality of radial throttling holes are communicated into a whole.
In the embodiment of the invention, the inner core column and the outer sleeve are connected together by means of threads or welding.
In an embodiment of the present invention, the annular throttle groove is a rectangular groove.
In an embodiment of the invention, the annular throttle groove is a circular groove.
In the embodiment of the invention, the width of the annular throttling groove is 1/5-3/10 of the inner diameter of the inner core column.
In the embodiment of the invention, the depth of the annular throttling groove is 1/5-3/10 of the inner diameter of the inner core column.
In an embodiment of the present invention, the axial throttling groove is a rectangular groove or a circular groove.
In the embodiment of the invention, when the axial throttling groove is a rectangular groove, the width is 1/5-3/10 of the inner diameter of the inner core column.
In the embodiment of the invention, when the axial throttling groove is a rectangular groove, the depth of the axial throttling groove is 1/5-3/10 of the inner diameter of the inner core column.
In the specific implementation example of the invention, the inner diameter of the radial throttling hole is 3/10-2/5 of the inner core column inner diameter.
The positive progress effects of the invention are as follows: the annular throttling device provided by the invention has the following advantages: (1) the annular flow passage is used, fluid moves forwards in the flow passage under the action of centrifugal force, the pressure is gradually reduced, the step-type pressure reduction of the fluid in the orifice plate flowmeter is avoided, and the cavitation phenomenon can be effectively avoided; (2) when the high-temperature and high-pressure fluid is measured, the annular structure is not easy to deform, and the structural change phenomenon caused by cavitation is less generated, so that the outflow coefficient is stable, and the measurement precision is higher; (3) in the closed annular flow channel, the flow channel is continuous, impurities are not easy to deposit in the flow channel, and the internal blockage of the flow channel can be prevented; (4) the fluid basically does not flow back after flowing through the annular throttling device, the defect of disordered flow field at the outlet of the orifice plate flowmeter is overcome, and the scaling condition at the rear end of the flowmeter can be effectively improved, so that the service life of the flowmeter is prolonged; (5) the device body has simple structure and is easy to clean.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic diagram of a liquid medium flow through the device.
Fig. 3 is a diagram of an inner leg.
Fig. 4 is a cut-away view of fig. 3.
The following are the names corresponding to the reference numbers in the invention:
the outer sleeve 1, the inner core column 2, the annular throttling groove 201, the axial throttling groove 202 and the radial throttling hole 203.
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic overall structure of the present invention, fig. 2 is a schematic diagram of a liquid medium flow device path, fig. 3 is a diagram of an inner stem, and fig. 4 is a cut-away view of fig. 3. As shown in the above figures: the invention provides an annular throttling device, which comprises: the outer sleeve 1 is sleeved on the inner core column 2; the inner leg 2 includes: the throttling structure comprises a ring throttling groove 201, an axial throttling groove 202 and a plurality of radial throttling holes 203, wherein the ring throttling groove 201, the axial throttling groove 202 and the plurality of radial throttling holes 203 are communicated into a whole.
The inner core column 2 and the outer sleeve 1 are connected together in a threaded or welded mode.
In the specific implementation of the present invention, the annular throttling groove 201 is a rectangular groove or a circular groove. The axial throttle groove 202 is a rectangular groove or a circular groove.
In a specific implementation, the following parameters may be used:
the width of the annular throttling groove 201 is 1/5-3/10 of the inner diameter of the inner core column 2; the depth of the annular throttling groove 201 is 1/5-3/10 of the inner diameter of the inner core column 2; when the axial throttling groove 202 is a rectangular groove, the width is 1/5-3/10 of the inner diameter of the inner core column 2; when the axial throttling groove 202 is a rectangular groove, the depth of the axial throttling groove 202 is 1/5-3/10 of the inner diameter of the inner plunger 2; the inner diameter of the radial orifice 203 is 3/10-2/5 of the inner diameter of the inner plunger 2. The above parameters may be selected according to specific requirements.
In fig. 2, a high-pressure liquid inlet is provided at a position a, and a low-pressure liquid outlet is provided at a position B. The invention is mainly used for a throttling device under high pressure difference, and after a medium flows through the annular throttling groove, the axial throttling groove and the plurality of radial throttling holes, most of pressure is lost, so that ideal outlet pressure is achieved. In a specific implementation, the inner leg is connected to the outer sleeve by a screw thread, and the black arrows in fig. 2 indicate the flow direction of the liquid medium. The top of the inner core is sealed, and the liquid medium can only pass through the annular throttling groove, then reaches the axial throttling groove and then reaches the next stage annular groove. Finally through the orifice, into the core lumen and out the sheath outlet.
The higher pressure medium pressure is reduced by the narrow annular and axial throttle grooves and the throttle bore.
By using the annular throttling groove, the flowing path of the liquid medium can be greatly increased under the condition that the total length of the outer sleeve is not changed. Thereby improving the purpose of throttling and pressure reduction.
The invention uses the annular flow passage, the fluid moves forward in the flow passage under the action of centrifugal force, the pressure is gradually reduced, the step-type pressure drop of the fluid in the orifice plate flowmeter is avoided, and the cavitation phenomenon can be effectively avoided.
When the high-temperature high-pressure fluid is measured, the annular structure is not easy to deform, the structural change phenomenon caused by cavitation is less generated, the outflow coefficient is stable, and the measurement precision is high.
In the closed annular flow passage, the flow passage is continuous, impurities are not easy to deposit in the flow passage, and the internal blockage of the flow passage can be prevented.
The fluid of the invention basically does not return after flowing through the annular throttling device, thereby changing the defect of disordered flow field at the outlet of the orifice plate flowmeter, effectively improving the scaling condition at the rear end of the flowmeter and prolonging the service life of the flowmeter. The device body of the invention has simple structure and is easy to clean.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (10)
1. An annular throttling device, characterized in that: the annular throttling device comprises: the outer sleeve is sleeved on the inner core column; the inner leg includes: the annular throttling groove, the axial throttling groove and the plurality of radial throttling holes are communicated into a whole.
2. The annular throttle device of claim 1, wherein: the inner core column and the outer sleeve are connected together in a threaded or welded mode.
3. The annular throttle device of claim 1, wherein: the annular throttling groove is a rectangular groove.
4. The annular throttle device of claim 1, wherein: the annular throttling groove is a circular groove.
5. An annular throttle device as set forth in claim 3, characterized in that: the width of the annular throttling groove is 1/5-3/10 of the inner diameter of the inner core column.
6. An annular throttle device according to claim 1 or 3, characterized in that: the depth of the annular throttling groove is 1/5-3/10 of the inner diameter of the inner core column.
7. The annular throttle device of claim 1, wherein: the axial throttling groove is a rectangular groove or a circular groove.
8. The annular throttle device of claim 7, wherein: when the axial throttling groove is a rectangular groove, the width of the axial throttling groove is 1/5-3/10 of the inner diameter of the inner core column.
9. An annular throttle device according to claim 1 or 7, characterized in that: when the axial throttling groove is a rectangular groove, the depth of the axial throttling groove is 1/5-3/10 of the inner diameter of the inner core column.
10. The annular throttle device of claim 1, wherein: the inner diameter of the radial throttling hole is 3/10-2/5 of the inner diameter of the inner core column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110081413.7A CN112683356A (en) | 2021-01-21 | 2021-01-21 | Annular throttling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110081413.7A CN112683356A (en) | 2021-01-21 | 2021-01-21 | Annular throttling device |
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| Publication Number | Publication Date |
|---|---|
| CN112683356A true CN112683356A (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110081413.7A Pending CN112683356A (en) | 2021-01-21 | 2021-01-21 | Annular throttling device |
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| CN (1) | CN112683356A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209742Y (en) * | 1994-12-14 | 1995-10-11 | 西安泵阀总厂 | High temperature and high pressure differential pressure-relief regulating valve |
| CN2639589Y (en) * | 2003-09-12 | 2004-09-08 | 浙江大学 | Low noise direction throttle valve for controlling flow field pressure distribution |
| CN103939467A (en) * | 2014-05-04 | 2014-07-23 | 中国电子科技集团公司第十六研究所 | Air hydrostatic bearing of machine making free piston type reciprocating motion |
| US20160017903A1 (en) * | 2013-03-15 | 2016-01-21 | Kayaba Industryco., Ltd. | Fluid throttle member |
| CN106640423A (en) * | 2016-11-16 | 2017-05-10 | 上海空间推进研究所 | Flow resistance adjusting device of low-thrust liquid attitude control engine set |
| CN109974794A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of spiral throttle flowmeter |
| CN110360324A (en) * | 2019-07-02 | 2019-10-22 | 四川杰特机器有限公司 | A kind of multistage gap throttling pressure regulator valve |
-
2021
- 2021-01-21 CN CN202110081413.7A patent/CN112683356A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2209742Y (en) * | 1994-12-14 | 1995-10-11 | 西安泵阀总厂 | High temperature and high pressure differential pressure-relief regulating valve |
| CN2639589Y (en) * | 2003-09-12 | 2004-09-08 | 浙江大学 | Low noise direction throttle valve for controlling flow field pressure distribution |
| US20160017903A1 (en) * | 2013-03-15 | 2016-01-21 | Kayaba Industryco., Ltd. | Fluid throttle member |
| CN103939467A (en) * | 2014-05-04 | 2014-07-23 | 中国电子科技集团公司第十六研究所 | Air hydrostatic bearing of machine making free piston type reciprocating motion |
| CN106640423A (en) * | 2016-11-16 | 2017-05-10 | 上海空间推进研究所 | Flow resistance adjusting device of low-thrust liquid attitude control engine set |
| CN109974794A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of spiral throttle flowmeter |
| CN110360324A (en) * | 2019-07-02 | 2019-10-22 | 四川杰特机器有限公司 | A kind of multistage gap throttling pressure regulator valve |
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