CN115013623A - Multi-stage adjustable throttling device - Google Patents
Multi-stage adjustable throttling device Download PDFInfo
- Publication number
- CN115013623A CN115013623A CN202210614279.7A CN202210614279A CN115013623A CN 115013623 A CN115013623 A CN 115013623A CN 202210614279 A CN202210614279 A CN 202210614279A CN 115013623 A CN115013623 A CN 115013623A
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- throttling
- plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02709—Throttle passages in the form of perforated plates
- F16L55/02718—Throttle passages in the form of perforated plates placed transversely
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Sliding Valves (AREA)
Abstract
The invention provides a multi-stage adjustable throttling device, comprising: mounting the cylinder; the throttling assembly comprises an installation rod and a plurality of throttling plate groups arranged on the installation rod at intervals, the installation rod extends along the axial direction of the installation cylinder, each throttling plate group comprises a first throttling plate and a second throttling plate, the first throttling plate is fixedly arranged on the installation rod, and the second throttling plate is movably arranged on the installation rod and has a movable stroke close to or far away from the corresponding first throttling plate; and the driving piece is arranged in the mounting cylinder and used for driving the second throttle plates to move. The pressure reducing device provided by the invention aims to solve the problems of poor effect, high noise and short service life of the traditional pressure reducing device.
Description
Technical Field
The invention relates to the technical field of pressure reducing devices, in particular to a multistage adjustable throttling device.
Background
In thermal power systems where fluid pressure reduction in various lines is required, such as in pump flow regulation, return regulation is typically used, and the fluid in the return line is reduced to a lower pressure and then discharged to the inlet tank or pump inlet. The pressure reducing device usually adopts a valve or an orifice plate for throttling to achieve the functions, however, the general principle of valve throttling is to adjust the pressure reducing ratio by adjusting the flow area, which results in high fluid flow rate at the valve throttling position, thereby possibly further inducing cavitation, so that the service life of the throttling assembly is short, and simultaneously, larger flow-induced noise can be generated to affect the surrounding environment. The orifice plate throttling can reduce cavitation to a certain extent, but the resistance coefficient is a fixed value, and the characteristic that the pressure reduction effect changes along with the flow is large.
Disclosure of Invention
The invention provides a multistage adjustable throttling device which is used for solving the problems of poor effect, high noise and short service life of a pressure reducing device in the prior art.
The invention provides a multi-stage adjustable throttling device, comprising:
the mounting cylinder is internally provided with a mounting cavity;
the throttling assembly comprises an installation rod and a plurality of throttling plate groups arranged on the installation rod at intervals, the installation rod extends along the axial direction of the installation cylinder, each throttling plate group comprises a first throttling plate and a second throttling plate, the first throttling plate is fixedly arranged on the installation rod, the second throttling plate is movably arranged on the installation rod and has a movable stroke close to or far away from the corresponding first throttling plate, the throttling effect of the throttling assembly is gradually increased in the process that the second throttling plate is close to the first throttling plate, and the throttling effect of the throttling assembly is gradually decreased in the process that the second throttling plate is far away from the first throttling plate; and the number of the first and second groups,
and the driving part is arranged in the mounting cylinder and is used for driving the second throttle plates to move.
According to the multi-stage adjustable throttle device provided by the invention, the first throttle plate is provided with the first throttle hole, the second throttle plate is provided with the second throttle hole, the first throttle hole and the second throttle hole are gradually staggered in the process that the second throttle plate approaches the first throttle plate, and the first throttle hole and the second throttle hole are gradually overlapped in the process that the second throttle plate is far away from the first throttle plate.
According to the multistage adjustable throttling device provided by the invention, the mounting rod is provided with threads, each second throttling plate is connected to the mounting rod in a threaded manner, and the driving piece is connected with the mounting rod in a driving manner and is used for driving the mounting rod to rotate.
According to the multistage adjustable throttling device provided by the invention, the throttling assembly further comprises mounting pieces arranged at two ends of the mounting rod, and the two mounting pieces are respectively connected with the inner wall surface of the mounting cylinder;
two all be equipped with the sleeve on the installed part, be equipped with the internal thread in the sleeve, the both ends correspondence of installation pole is equipped with the external screw thread, the both ends threaded connection of installation pole is in the correspondence the sleeve, the driving piece drive is connected the installation pole is used for the drive the installation pole rotates.
According to the multi-stage adjustable throttling device provided by the invention, the maximum axial moving distance of the mounting rod is A, the distance between two adjacent second throttling plates is B, and A is less than B/2.
According to the multistage adjustable throttling device provided by the invention, the maximum rotation angle of the first throttling plate is alpha, the chord length of the internal thread is C, the diameter of the mounting rod is D, and C is less than or equal to pi D alpha.
According to the multi-stage adjustable throttling device provided by the invention, the driving piece comprises a gear and a driving screw rod, the gear is sleeved at one end of the mounting rod, and the driving screw rod is connected to the gear in a meshing manner.
According to the multistage adjustable throttling device provided by the invention, the mounting part comprises third throttling plates, two third throttling plates are arranged in parallel with each throttling plate group, and third throttling holes are formed in the third throttling plates.
According to the multistage adjustable throttling device provided by the invention, a sleeve is further arranged in the mounting cavity, and the first throttling plate, the second throttling plate and the third throttling plate are all embedded in the sleeve.
According to the multistage adjustable throttling device provided by the invention, two ends of the mounting cylinder in the axial direction are respectively provided with a connecting flange.
The multistage adjustable throttling device provided by the invention can realize gradual pressure reduction through the arrangement of the first throttling plate and the second throttling plate, the distance between the first throttling plate and the second throttling plate can be adjusted, and the adjustment of the resistance coefficient can be realized through adjusting the angle and the distance between the first throttling plate and the second throttling plate, so that the multistage adjustable throttling device is used for adapting to pressure reduction requirements under different flows, meanwhile, the flow area cannot be changed in the adjustment process, the problem of overlarge local flow speed cannot be generated, cavitation cannot occur easily, larger flow-induced noise cannot be caused, and quiet pressure reduction with longer service life can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a multi-stage adjustable throttle device according to the present invention;
FIG. 2 is a schematic cross-sectional structural view of the sleeve of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the second throttle plate of FIG. 1;
reference numerals:
1: a multi-stage adjustable throttling device; 2: mounting the cylinder; 3: a throttle assembly; 4: a drive member; 5: a mounting cavity; 6: a connecting flange; 7: mounting a rod; 8: a throttle plate set; 9: a mounting member; 10: a gear; 11: a drive screw; 12: a first throttle plate; 13: a first orifice; 14: a second throttle plate; 15: a second orifice; 16: a sleeve; 17: a third current regulating plate; 18: a third orifice.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The multi-stage adjustable throttle device 1 of the present invention is described below with reference to fig. 1-3.
The invention provides a multistage adjustable throttling device 1, comprising: the installation cylinder 2 is internally provided with an installation cavity 5; the throttling assembly 3 comprises a mounting rod 7 and a plurality of throttling plate groups 8 arranged on the mounting rod 7 at intervals, the mounting rod 7 extends along the axial direction of the mounting cylinder 2, each throttling plate group 8 comprises a first throttling plate 12 and a second throttling plate 14, the first throttling plate 12 is fixedly arranged on the mounting rod 7, the second throttling plate 14 is movably arranged on the mounting rod 7 and has a movable stroke close to or far away from the corresponding first throttling plate 12, the throttling effect of the throttling assembly 3 is gradually increased in the process that the second throttling plate 14 is close to the first throttling plate 12, and the throttling effect of the throttling assembly 3 is gradually decreased in the process that the second throttling plate 14 is far away from the first throttling plate 12; and the driving piece 4 is arranged in the mounting cylinder 2 and used for driving each second throttle plate 14 to move. It should be noted that two or more throttling plate sets 8 may be provided, and may be specifically provided according to the actual pipe conditions and the water flow conditions, and the present invention is not limited to this. The multistage adjustable throttling device 1 provided by the invention can realize gradual pressure reduction through the arrangement of the plurality of throttling components 3, the distance between the first throttling plate 12 and the second throttling plate 14 can be adjusted, and the resistance coefficient can be adjusted through adjusting the angle and the distance between the first throttling plate 12 and the second throttling plate 14, so that the multistage adjustable throttling device is used for adapting to pressure reduction requirements under different flow rates, meanwhile, the overflowing area can not be changed in the adjusting process, the problem of overlarge local flow rate can not be generated, cavitation can not easily occur, larger flow-induced noise can not be caused, and quieting pressure reduction with longer service life can be realized.
As described above, the throttle effect is increased and decreased during the process of changing the distance between the first throttle plate 12 and the second throttle plate 14, and in the solution provided by the present invention, the above effect is achieved depending on the arrangement of the throttle hole. Specifically, the first throttle plate 12 is provided with a first throttle hole 13, the second throttle plate 14 is provided with a second throttle hole 15, when the first throttle plate 12 is at the initial position, the projection surfaces of the first throttle hole 13 and the second throttle hole 15 are arranged in a staggered manner, and when the second throttle plate 14 is away from the first throttle plate 12, the first throttle hole 13 and the second throttle hole 15 are gradually overlapped, so that the flow loss of fluid is reduced, and the throttling capacity is reduced; during the process that the second throttle plate 14 approaches the first throttle plate 12 along the original path, the first throttle hole 13 and the second throttle hole 15 are gradually staggered, so that the flow loss of the fluid is increased, and the throttling capacity is improved. Of course, the first throttle hole 13 and the second throttle hole 15 may be disposed to overlap each other when the second throttle plate 14 is at the initial position, and the first throttle hole 13 and the second throttle hole 15 may be disposed to overlap each other when the second throttle plate 14 is away from the second throttle hole 15, which is not a limitation of the present invention. It should be noted that the first throttle hole 13 may be provided with the same number and shape as the second throttle hole 15, or may be provided with different numbers and shapes, and the overlapping or staggering of the first throttle hole 13 and the second throttle hole 15 may refer to an overlapping range of projection planes of the two, and when the overlapping range is increased, the throttling capacity is decreased, and when the overlapping range is decreased, the throttling capacity is increased, which is not limited in the present invention.
The invention provides two embodiments of the driving member 4, in the first embodiment, the mounting rod 7 is provided with threads, the second throttle plate 14 is connected to the mounting rod 7 in a threaded manner, and the driving member 4 is connected to the mounting rod 7 in a driving manner and used for driving the mounting rod 7 to rotate. The second throttle plate 14 corresponds to a nut on the mounting rod 7, and the second throttle plate 14 can be moved toward or away from the first throttle plate 12 during rotation of the mounting rod 7.
In the second embodiment, the throttling assembly 3 further comprises mounting pieces 9 arranged at two ends of the mounting rod 7, and the two mounting pieces 9 are respectively connected with the inner wall surface of the mounting cylinder 2; all be equipped with sleeve 16 on two installed parts 9, be equipped with the internal thread in the sleeve 16, the both ends correspondence of installation pole 7 is equipped with the external screw thread, and the both ends threaded connection of installation pole 7 is in the sleeve 16 that corresponds, and installation pole 7 is connected in the drive of driving piece 4 for drive installation pole 7 rotates. It should be noted that the driver 4 is connected to one end of the mounting rod 7 in a driving manner, and during the driving of the mounting rod 7 by the driver 4, the mounting rod 7 can approach or depart from the sleeve 16 along the screw thread, for example, the mounting rod 7 approaches the sleeve 16 when rotating clockwise, so that the second throttle plate 14 approaches the first throttle plate 12, and departs from the sleeve 16 when rotating the mounting rod 7 counterclockwise, so that the second throttle plate 14 departs from the first throttle plate 12.
Further, in order to ensure a good throttling regulation effect, the maximum axial moving distance of the mounting rod 7 is less than half of the distance between two adjacent second throttle plates 14, so that the maximum axial moving distance of the mounting rod 7 is set to be A, the distance between two adjacent second throttle plates 14 is set to be B, and A is less than B/2. Furthermore, the maximum rotation angle of the first throttle plate 12 is alpha, the chord length of the internal thread is C, the diameter of the mounting rod 7 is D, and C is less than or equal to pi D alpha.
Specifically, the driving member 4 has various setting forms, and a rotating motor can be set to directly drive the mounting rod 7 to rotate, in the technical scheme provided by the invention, the driving member 4 includes a gear 10 and a driving screw 11, the gear 10 is sleeved at one end of the mounting rod 7, the driving screw 11 is meshed with the gear 10, and the gear 10 and the driving screw 11 form a worm and gear driving structure, so that the mounting rod 7 can be conveniently driven to rotate.
Further, for an improved pressure relief effect, the mounting member 9 comprises a third throttle plate 17, two third throttle plates 17, the first throttle plate 12 and the second throttle plate 14 are arranged in parallel, and the third throttle plates 17 are provided with third throttle holes 18. The third orifice 18 is provided alternately with the first orifice 13 and the second orifice 15. In the technical scheme provided by the invention, the arrangement of the plurality of throttle plates enables the pressure of the fluid to be gradually reduced in the process of passing through the plurality of throttle plates, so that the function of stably reducing the pressure of the fluid is realized.
Specifically, a sleeve 16 is further arranged in the mounting cavity 5, the first throttle plate 12, the second throttle plate 14 and the third throttle plate 17 are all embedded in the sleeve 16, and the sleeve 16 is arranged to enable an interval to be generated among the first throttle plate 12, the second throttle plate 14 and the third throttle plate 17, so that the throttling effect is better.
Further, since the device is required to be installed in a pipeline, two connecting flanges 6 are respectively provided at both ends of the installation cylinder 2 in the axial direction, and the device can be installed between pipelines through the connecting flanges 6.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A multi-stage adjustable throttling device, comprising:
the mounting cylinder is internally provided with a mounting cavity;
the throttling assembly comprises an installation rod and a plurality of throttling plate groups arranged on the installation rod at intervals, the installation rod extends along the axial direction of the installation cylinder, each throttling plate group comprises a first throttling plate and a second throttling plate, the first throttling plate is fixedly arranged on the installation rod, the second throttling plate is movably arranged on the installation rod and has a movable stroke close to or far away from the corresponding first throttling plate, the throttling effect of the throttling assembly is gradually increased in the process that the second throttling plate is close to the first throttling plate, and the throttling effect of the throttling assembly is gradually decreased in the process that the second throttling plate is far away from the first throttling plate; and the number of the first and second groups,
and the driving part is arranged in the mounting cylinder and is used for driving the second throttle plates to move.
2. The multi-stage adjustable throttle device of claim 1, wherein a first orifice is provided in the first throttle plate, a second orifice is provided in the second throttle plate, the first orifice and the second orifice are gradually staggered as the second throttle plate approaches the first throttle plate, and the first orifice and the second orifice are gradually overlapped as the second throttle plate moves away from the first throttle plate.
3. The multi-stage adjustable throttling device according to claim 2, wherein the mounting bar is provided with threads, each second throttle plate is connected to the mounting bar in a threaded manner, and the driving member is connected to the mounting bar in a driving manner and is used for driving the mounting bar to rotate.
4. The multi-stage adjustable throttling device according to claim 3, wherein the throttling assembly further comprises mounting members arranged at two ends of the mounting rod, and the two mounting members are respectively connected with the inner wall surface of the mounting cylinder;
two all be equipped with the sleeve on the installed part, be equipped with the internal thread in the sleeve, the both ends correspondence of installation pole is equipped with the external screw thread, the both ends threaded connection of installation pole in corresponding the sleeve, the driving piece drive is connected the installation pole is used for the drive the installation pole rotates.
5. The multi-stage adjustable throttle device of claim 4, wherein the mounting rod has a maximum axial movement distance of A, and the distance between two adjacent second throttle plates is B, A < B/2.
6. The multi-stage adjustable throttle device of claim 4, wherein the maximum rotation angle of the first throttle plate is α, the chord length of the internal thread is C, the diameter of the mounting rod is D, and C ≦ π D α.
7. The multi-stage adjustable throttling device according to claim 3 or 4, wherein the driving member comprises a gear and a driving screw, the gear is sleeved on one end of the mounting rod, and the driving screw is engaged with the gear.
8. The multi-stage adjustable flow restriction device of claim 4, wherein the mounting member comprises a third flow restriction plate, two of the third flow restriction plates are disposed parallel to each of the flow restriction plates, and a third flow restriction hole is formed in the third flow restriction plate.
9. The multi-stage adjustable throttling device of claim 8, wherein a sleeve is further disposed in the mounting chamber, and the first throttle plate, the second throttle plate and the third throttle plate are all embedded in the sleeve.
10. The multi-stage adjustable throttling device of claim 1, wherein a connecting flange is provided at each of two axial ends of the mounting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614279.7A CN115013623B (en) | 2022-05-31 | 2022-05-31 | Multistage adjustable flow device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614279.7A CN115013623B (en) | 2022-05-31 | 2022-05-31 | Multistage adjustable flow device |
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| CN115013623A true CN115013623A (en) | 2022-09-06 |
| CN115013623B CN115013623B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210614279.7A Active CN115013623B (en) | 2022-05-31 | 2022-05-31 | Multistage adjustable flow device |
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| CN115013623B (en) | 2023-09-12 |
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