CN112254383B - Throttle valve core assembly and throttle valve thereof - Google Patents
Throttle valve core assembly and throttle valve thereof Download PDFInfo
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- CN112254383B CN112254383B CN202011225377.9A CN202011225377A CN112254383B CN 112254383 B CN112254383 B CN 112254383B CN 202011225377 A CN202011225377 A CN 202011225377A CN 112254383 B CN112254383 B CN 112254383B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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Abstract
The invention relates to a centrifugal throttle valve and a valve core assembly thereof in the technical field of low-temperature throttling refrigeration, comprising a first valve plate and a second valve plate; the first valve plate is provided with a blind hole and an orifice, the orifice is a through hole formed along the axial direction of the first valve plate, and the orifice is communicated with the blind hole through a diversion trench; the second valve plate is provided with a serial flow hole which is a through hole formed along the axial direction of the second valve plate; and two surfaces of the second valve plate are respectively attached and connected with the first valve plate to form a group of valve cores, and the blind holes are communicated with the series flow holes. According to the valve core structure of the centrifugal throttle valve, the speed of fluid passing through the throttling hole is reduced through the structural design of the throttling hole, the flow guide groove, the blind hole and the serial flow hole, the cavitation and corrosion phenomena are effectively reduced, meanwhile, through the design of the radial flow channel, the flow path of the fluid is increased, and the pressure drop effect is improved under the condition that the valve core structure is compact.
Description
Technical Field
The invention relates to the technical field of low-temperature throttling refrigeration, in particular to a throttle valve core assembly and a throttle valve thereof.
Background
With the development of space propulsion technology, low-temperature propellant is considered as the most economical and efficient chemical propellant for entering space and rail transfer by NASA (national aeronautics and astronautics) by virtue of the advantages of higher flushing rate, greenness, no toxicity, low price and the like, and is also the preferred propellant for future lunar exploration, Mars exploration and farther and deeper space exploration. In order to meet the long-time on-orbit task demand, a low-temperature propellant on-orbit long-term storage and management technology must be developed, and a thermodynamic exhaust technology is a key technology. As a key component of a thermodynamic exhaust system, the throttle valve mainly has the function of changing a low-temperature propellant close to a saturated state in the storage tank into a low-temperature and low-pressure two-phase flow by utilizing the throttling function, and the temperature and the pressure of the storage tank are controlled by convective heat transfer, so that the performance of the throttle valve directly influences the realization of the system function and the performance guarantee. A throttle valve of an existing thermodynamic exhaust system generally adopts a single micropore with the diameter of 100-200 microns to carry out throttling refrigeration on a low-temperature propellant, and system failure caused by blockage of redundant substances is often easy to happen. In addition, the low-temperature propellant is seriously cavitated after passing through the single-hole throttling valve, so that the latent heat of evaporation of the available propellant is reduced, the system performance is not improved, and meanwhile, the adverse effects of cavitation, vibration and the like are easily generated.
The search of the prior art shows that the Chinese invention patent publication No. CN108253671A discloses a throttle valve, which comprises a first fixed flange, a microporous throttling element and a second fixed flange, wherein the microporous throttling element is packaged between the first fixed flange and the second fixed flange, and the microporous throttling element is provided with at least two micropores. Compared with a single-micropore throttling valve, the multi-micropore throttling element adopted by the throttling valve can increase the flow of throttling circulation on the basis of ensuring the throttling and cooling effects of the throttling valve, and further improve the refrigerating capacity of the throttling refrigerator. The invention has the corresponding problems described above.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a throttle valve core assembly and a throttle valve thereof.
The invention provides a valve core assembly of a centrifugal throttle valve, which comprises a first valve plate and a second valve plate;
the first valve plate is provided with a blind hole and an orifice, the orifice is a through hole formed along the axial direction of the first valve plate, and the orifice is communicated with the blind hole through a diversion trench;
the second valve plate is provided with a serial flow hole which is a through hole formed along the axial direction of the second valve plate;
and two surfaces of the second valve plate are respectively attached and connected with the first valve plate to form a group of valve cores, and the blind holes are communicated with the series flow holes.
In some embodiments, the diversion trench is tangent to the orifice and/or the diversion trench is tangent to the blind hole.
In some embodiments, the flow guide groove is any one of a rectangular groove, a trapezoidal groove, or an arc-shaped groove.
In some embodiments, the first valve plate is provided with an odd number of blind holes, one of the blind holes is communicated with the throttle hole, and every two of the remaining even number of blind holes are relatively independent after being communicated through one guide groove;
the serial flow holes on the second valve plate are the same as the blind holes in one first valve plate in number; the number of the blind holes in the first valve plate is more than or equal to 3;
fluid flows in from the throttle hole on one side, passes through the plurality of blind holes and the plurality of serial flow holes, and then flows out from the throttle hole on the other side.
In some embodiments, the diameter of the series flow hole is 0.1-5 mm, and the diameter of the blind hole is 1.5-3.5 times of the diameter of the series flow hole.
In some embodiments, multiple sets of the valve spools are included, and the multiple sets of the valve spools are connected in series in sequence through the throttling hole.
The invention also provides a centrifugal throttle valve, which adopts the valve core component of the centrifugal throttle valve and also comprises a filter plate and a filter screen;
the filter plate is provided with filter holes and clamping grooves, the filter screen is connected into the filter plate through the clamping grooves, and the filter holes are through holes arranged along the axial direction of the filter plate;
the two filter plates are respectively attached to the first valve plates on two sides of the second valve plate, and the filter holes are communicated with the throttling holes.
In some embodiments, the filter plates located on the same side of the first valve plate are plural, and the plural filter plates are connected in series.
In some embodiments, the filter plate is provided with a conical cavity, the filter holes are communicated with the conical top of the conical cavity, and the filter screen is positioned at the conical bottom of the conical cavity.
In some embodiments, the product of the flow area of the conical bottom of the conical cavity and the porosity of the filter screen is larger than the flow area of the filter holes.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the valve core structure of the centrifugal throttle valve, the speed of fluid passing through the throttling hole is reduced through the structural design of the throttling hole, the flow guide groove, the blind hole and the serial flow hole, the cavitation and corrosion phenomena are effectively reduced, meanwhile, through the design of the radial flow channel, the flow path of the fluid is increased, and the pressure drop effect is improved under the condition that the valve core structure is compact.
2. The valve core structure of the centrifugal throttle valve reduces the sensitivity of the throttle valve to the viscosity of liquid and improves the pressure drop effect after throttling by the structural design of the diversion trench and the improvement of the connection mode of the diversion trench, the blind hole and the throttling hole.
3. The valve core structure of the centrifugal throttle valve is characterized in that through the improvement of the first valve plate and the second valve plate, the number of blind holes and guide grooves in the first valve plate and the number of serial flow holes in the second valve plate are increased, and through the butt joint structural design, the flow path of fluid is prolonged, the flow area of a throttling hole is greatly increased, and the problem of blockage is solved.
4. The valve core structure of the centrifugal throttle valve further improves the throttling effect by the serial superposition of the valve cores.
5. The centrifugal throttle valve device solves the problems of flow resistance increase and flow speed reduction caused by mounting the filter screen through optimizing and improving the structure of the filter plate, and has the advantages of easy mounting, compact structure and the like. The throttle valve can be connected in various forms such as welding and flanges, and is flexible in mounting mode and convenient to use.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the internal structure of a throttle valve according to an embodiment of the present invention;
FIG. 2 is a schematic view of a throttle valve according to an embodiment of the present invention;
FIG. 3 is a schematic view of the valve core assembly according to the embodiment of the present invention
FIG. 4 is a schematic view of a first cartridge component;
FIG. 5 is a schematic view of a valve core assembly;
FIG. 6 is a schematic view of a fluid flow path;
fig. 7 is a schematic view of a structure of a filter screen clamping groove.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
As shown in fig. 1 to 7, the present invention provides a centrifugal throttle valve core assembly, which comprises a first valve plate 41 and a second valve plate 42, wherein the first valve plate 41 and the second valve plate 42 have substantially the same shape. The term "substantially the same" as used herein includes the case where the valve plates are identical in shape and size, such as circular plates having the same diameter, and the case where the valve plates are different in shape and size, such as the case where the first valve plate 41 is a circular plate and the second valve plate 42 is a rectangular plate. A second valve plate 42 is clamped between the two first valve plates 41 and is packaged together by welding means such as brazing or diffusion welding, and the valve core 4 which is of a sandwich-like structure and can be used for fluid to enter and exit and has a closed cavity structure is formed. Specifically, the method comprises the following steps:
the first valve plate 41 is provided with a blind hole 410, a guide groove 411, and an orifice 412. The orifice 412 is a through hole that opens in the axial direction of the first valve plate 41 and through which fluid flows in and out, and the position of the orifice 412 is preferably located at the center of the first valve plate 41. The blind hole 410 is a blind hole that is provided in the first valve plate 41 at a distance from the orifice 412, the blind hole 410 is communicated with the orifice 412 through the guide groove 411, and external fluid enters the blind hole 410 from the orifice 412 along the guide groove 411. Suitably, the second valve plate 42 is provided with a serial flow hole 420, and the serial flow hole 420 is a through hole formed along the axial direction of the second valve plate 42. Here, the blind hole 410, the guiding groove 411 and the throttle hole 412 in the first valve plate 41, and the serial flow hole 420 in the second valve plate 42 can be machined, chemically etched or laser etched.
When the two first valve plates 41 and the second valve plate 42 are sealed into the valve core 4 by welding, the two surfaces of the second valve plate 42 are respectively attached to the surfaces of the two first valve plates 41, the two side surfaces of the second valve plate 42 serve as sealing covers of the guide grooves 411 on the first valve plates 41 on the two sides, and the sealing covers are realized by brazing or diffusion welding. Meanwhile, the blind holes 410 on the first valve plate 41 on both sides are butted with the series flow holes 420, and preferably, the axes of the two blind holes 410 and one series flow hole 420 coincide.
The working principle of the centrifugal throttle valve core assembly provided by the invention is as follows:
after fluid enters the valve core 4 from the throttle hole 412 of the first valve plate 41 positioned on the left side of the second valve plate 42, because the second valve plate 42 is not provided with an axial through hole matched with the throttle hole 412, the fluid flows into the blind hole 410 in the same first valve plate 41 (on the left side) through the diversion trench 411, and through the conduction function of the serial flow hole 420, the fluid flows into the blind hole 410 of the first valve plate 41 positioned on the right side of the second valve plate 42, and then flows into the throttle hole 412 through the diversion trench 411 on the same first valve plate 41 (on the right side), and then flows out of the valve core 4.
According to the valve core structure of the centrifugal throttle valve, the speed of fluid passing through the throttling hole is reduced through the structural design of the throttling hole, the flow guide groove, the blind hole and the serial flow hole, the cavitation and corrosion phenomena are effectively reduced, meanwhile, through the design of the radial flow channel, the flow path of the fluid is increased, and the pressure drop effect is improved under the condition that the valve core structure is compact.
Example 2
As shown in fig. 1 to 7, in this embodiment 2, the flow guide groove is formed on the basis of embodiment 1, and through the structural design of the flow guide groove and the improvement of the connection manner between the flow guide groove and the blind hole and between the flow guide groove and the throttle hole, the sensitivity of the throttle valve to the viscosity of the liquid is reduced, and the pressure drop effect after throttling is improved.
The guide groove 411 and the blind hole 410 on the first valve plate 41, and the guide groove 411 and the orifice 412 can be connected in a tangent connection manner, that is, the two ends of the guide groove 411 respectively form circular arcs with the aperture of the blind hole 410 and the orifice 412, so that the connection between the guide groove 411 and the blind hole 410, and the connection between the guide groove 411 and the orifice 412 are curved circular arc transitions. The two ends of the diversion trench 411 are respectively connected with the blind hole 410 and the throttle hole 412 in a tangent mode, so that a proper viscosity compensation effect can be achieved, and the sensitivity of the throttle valve to the viscosity of liquid is reduced.
Further preferably, the shape of the guide slot 411 may be any one of a rectangular slot, a trapezoidal slot and an arc slot. When the guide grooves 411 are trapezoidal grooves, it is preferable that the converging directions of the trapezoidal guide grooves 411 of the left first valve plate 41 and the right first valve plate 41 on both sides of the second valve plate 42 are not uniform, but converge toward the end where the fluid enters. For example, after entering from the throttle hole 412 on the left first valve plate 41, the fluid enters the blind hole 410 through the guiding gutter 411, and at this time, the length of the cross section of one end of the guiding gutter 411, which is communicated with the throttle hole 412, is smaller than the length of the cross sections of the guiding gutter 411 and the blind hole 410; at this time, the fluid in the right first valve plate 41 flows into the throttle hole 412 through the blind hole 410 and the guiding slot 411 in sequence, and then the length of the cross section of the end of the right first valve plate 41 where the guiding slot 411 and the blind hole 410 are communicated is smaller than the length of the cross section of the end of the guiding slot 411 where the throttle hole 412 is communicated. The structure of the flow guide groove with the taper and the design of the corresponding opening convergence direction can further reduce the speed of fluid when the fluid passes through the throttling hole, and further reduce cavitation and corrosion phenomena.
When the guiding slot 411 is shaped as an arc slot, the flow path of the fluid can be increased in a limited space by means of the arc, and the final flow speed of the fluid can be reduced. Correspondingly, when the arc of the guiding slot 411 has a certain convergence property towards one direction, the convergence direction is convergent towards the end where the fluid enters, similar to the structure of the trapezoidal slots arranged on the two first valve plates 41.
Example 3
the first valve plate 41 is provided with an odd number of blind holes 410, and specifically, the number of blind holes on one first valve plate 41 is an odd number greater than or equal to 3, such as 3, 5, 7, and more odd number of blind holes 410. One blind hole 410 and the throttle hole 412 in the first valve plate 41 are communicated through the guide groove 411, every two blind holes 410 in the residual even number of blind holes 410 are communicated through one guide groove 411, and after the two blind holes 410 are communicated with one guide groove 411, the blind holes are relatively independent of other groups formed by the two blind holes 410 and one guide groove 411. For example, when 5 blind holes 410 are provided in the first valve plate 41, the number of the flow guide slots 411 provided therein is 3, one of the flow guide slots 411 is communicated with the throttle hole 412 and the blind hole 410, and each of the remaining two flow guide slots 411 is communicated with two of the blind holes 410. At this time, 3 sets of independent fluid passages which are not communicated with each other are formed on the first valve plate 41.
When the second valve plate 42 is clamped between the two first valve plates 41 and packaged as the valve core 4, the two first valve plates 41 on the two sides of the second valve plate 42 are arranged in a staggered manner, specifically, the blind holes 410 on the two sides of the second valve plate 42, which are communicated with the orifice 412, are not communicated with the same serial flow hole 420. Preferably, the blind holes 410, which are located on both sides of the second valve plate 42 and are communicated with the orifice 412, are respectively communicated with the two serial flow holes 420, which are located adjacent to each other, on the second valve plate 42, and in this case, after fluid enters from the orifice 412 on one side, the fluid can flow out from the orifice 412 on the other side after passing through all the blind holes 410, the guide grooves 411 and the serial flow holes 420 once. The specific installation method and the fluid flowing path are described by taking 5 blind holes 410 arranged on the first valve plate 41 as an example:
the 5 blind holes 410 are distributed at equal intervals along the circumferential direction of the first valve plate 41, and the centers of the 5 blind holes 410 are located on a circle with the same radius. Referring to fig. 2 to 4, the valve body 4 is composed of two first valve plates 41 and one second valve plate 42, and the first valve plate 41 located on the right side of the second valve plate 42 is referred to as a first valve plate 41' for the sake of convenience of explanation. The orifice 412 in the left first valve plate 41 is labeled as Y1-1, the blind hole 410 communicating with the orifice Y1-1 is labeled as Y1-2, and the remaining four blind holes 410 are respectively labeled as Y2-1, Y2-2, Y3-1 and Y3-2. The orifice 412 in the corresponding right first valve plate 41 'is labeled as Y1-1', the blind bore 410 communicating with the orifice Y1-1 'is labeled as Y1-2', and the remaining four blind bores 410 are labeled as Y2-1 ', Y2-2', Y3-1 'and Y3-2', respectively. The 5 series flow holes 420 opened on the second valve plate 42 are respectively marked as K1, K2, K3, K4 and K5.
When the valve core 4 is packaged, the second valve plate 42 is located between the two first valve plates 41 and 41 ', the blind hole Y1-2 on the left first valve plate 41 and the blind hole Y1-2 ' on the right first valve plate 41 ' are opposite and staggered by 72 degrees, namely the blind hole Y1-2, the series flow hole K1 and the blind hole Y2-1 ' are communicated, the blind hole Y2-1, the series flow hole K5 and the blind hole Y1-2 ' are communicated with each other, and the rest blind holes are adaptively matched and communicated with the series flow holes. And further, the two first valve plates 41 and 41' and the first valve plate 42 are assembled by being stacked on each other by welding, thereby forming a complicated flow passage with a plurality of orifices and rotating chambers.
Referring to fig. 3 and 4, assuming that the fluid enters the valve core from the central hole Y1-1 of the first valve plate 41, it can be understood that the path through which the fluid flows is specifically: flows into the blind hole Y1-2 through the throttle hole Y1-1 of the first valve plate 41, into the blind hole Y2-1 ' of the first valve plate 41 ' through the series flow hole K1 of the second valve plate 42 communicated therewith, then flows into the blind hole Y2-2 ', enters the blind hole Y3-2 of the first valve plate 41 through the series flow hole K2 of the second valve plate 42 communicated therewith, then flows into the blind hole Y3-1, enters the blind hole Y3-1 ' of the first spool element 41 ' through the series flow hole K3 of the second valve plate 42 communicated therewith, then flows into the blind hole Y3-2 ', enters the blind hole Y2-2 of the first spool element 41 through the series flow hole K4 of the second valve plate 42 communicated therewith, then flows into the blind hole Y2-1, enters the Y1-2 ' of the first valve plate 41 ' through the series flow hole K5 of the second valve plate 42 communicated therewith, then flows into the throttle hole Y1-1 ', and finally out of the valve core 4. The fluid flows through the valve core in-process and throttles through a plurality of throttle orifices connected in series, and simultaneously when flowing through the rotating chamber, the fluid can leave through a plurality of rotations, so that a better throttling effect is achieved, the flow area is enlarged by a plurality of times compared with the fluid area of the single-hole throttle valve under the same pressure drop condition, and the problem of blockage caused by small flow area of the throttle orifices is effectively solved.
Preferably, the diameter of the series flow hole 420 is 0.1-5 mm, and the diameter of the blind hole 410 is 1.5-3.5 times of the diameter of the series flow hole 420.
In some embodiments, the plurality of flow guiding grooves 411 disposed on the same first valve plate 41 may have the same or different structural shapes, and preferably, the same structural shape. Similarly, the shapes of the guide grooves 411 provided in the two first valve plates 41 located on both sides of the second valve plate 42 may be the same, or may be different, preferably the same.
Example 4
In embodiment 4, the throttle effect is further improved by stacking a plurality of valve elements in series on the basis of any of embodiments 1 to 3. Specifically, the method comprises the following steps:
a plurality of sets of valve spools 4 are included, each set of valve spools 4 includes two first valve plates 41 and one second valve plate 42, wherein each of the first valve plates 41 and the second valve plates 42 has the corresponding structure as described in any one of embodiments 1-3 above. The multiple valve cores 4 form an integral valve core in a series overlapping mode, fluid circulation is achieved through the throttling hole 412, the fluid flowing path is further enlarged, and the throttling effect is improved.
Example 5
This embodiment 5 is a centrifugal throttle valve formed based on any one of embodiments 1 to 4, and includes a filter plate 3 and a filter screen 2 in addition to the valve core 4 of any one of embodiments 1 to 4.
As shown in fig. 1-7, the filter screen 2 is mounted on the filter plate 3 in a snap-fit manner, and the filter plate 3 is provided with axial through-hole filter holes 31 for fluid to enter and exit. When the filter plate 3 is attached to the first valve plate 41, the filter holes 31 communicate with the throttle holes 412, and the strainer 2 is located in a side of the filter plate 3 remote from the first valve plate 41, the strainer 2 being parallel to the first valve plate 41. The shape of the filter plate 3 may be the same as that of the first valve plate 41, and may be a circular plate or a square plate, or may be different, for example, the first valve plate 41 may be a circular plate, and the filter plate 3 may be a square plate. The filter holes 31 and the orifice 412 are kept substantially the same in diameter. A clamping groove 32 is arranged on one side surface of the filter plate 3, and the clamping groove 32 is used for installing the filter screen 2. The filter screen 2 can be made of a metal wire woven screen or a multi-layer sintered filter screen by wire cutting or other methods.
The both sides of case 4 all are connected with filter 3, and the fluid of business turn over case 4 all leads to filter screen 2 and filters, and two filter 3 of installing filter screen 2 respectively promptly are connected with the laminating of the first valve plate 41 of both sides respectively, and the mode accessible welding of connecting forms encapsulation structure as an organic whole. At this moment, the valve core 4, the filter plate 3 and the filter screen 2 can be directly welded with the pipeline to form a part of the pipeline, and the corresponding function of the throttle valve can be realized.
In some preferred embodiments, there may be a plurality of filter plates 3 with the filter screens 2 installed on the same side of the valve core 4, and the plurality of filter plates 3 on the same side are connected in series and then connected to the first valve plate 41.
In some embodiments, the connector 1 is further included, and the connector 1 can be a mounting flange with straight segments or a metal pipe. The two connecting pieces 1 are respectively connected with the filter plates 3 on the two sides, and the whole structure of the throttle valve comprises a symmetrical packaging structure which takes the second valve plate 42 as the center and sequentially comprises the first valve plate 41, the filter plates 3, the filter screen 2 and the connecting pieces 1 on the two sides from inside to outside. At this time, the outer diameter of the clamping groove 32 formed in the side surface of the filter plate 3 is slightly larger than the inner diameter of the straight-line pipeline of the connecting piece 1, so that the filter screen 2 is fixed between the filter plate 3 and the connecting piece 1. The throttle valve can be connected in various forms such as welding and flanges, and is flexible in mounting mode and convenient to use.
Example 6
This embodiment 6 is a centrifugal throttle valve formed based on any of embodiments 1 to 4, and includes a filter plate 3 and a filter screen 2 in addition to the valve core 4 of any of embodiments 1 to 4.
As shown in fig. 1-7, the filter screen 2 is mounted on the filter plate 3 in a snap-fit manner, and the filter plate 3 is provided with axial through-hole filter holes 31 for fluid to enter and exit. When the filter plate 3 is attached to the first valve plate 41, the filter holes 31 communicate with the throttle holes 412, and the strainer 2 is located in a side of the filter plate 3 remote from the first valve plate 41, the strainer 2 being parallel to the first valve plate 41. The shape of the filter plate 3 may be the same as that of the first valve plate 41, and may be a circular plate or a square plate, or may be different, for example, the first valve plate 41 may be a circular plate, and the filter plate 3 may be a square plate. The filter holes 31 and the orifice 412 are kept substantially the same in diameter. A clamping groove 32 is arranged on one side surface of the filter plate 3, and the clamping groove 32 is used for installing the filter screen 2. The filter screen 2 can be made of a metal wire woven screen or a multi-layer sintered filter screen by wire cutting or other methods.
The both sides of case 4 all are connected with filter 3, and the fluid of business turn over case 4 all leads to filter screen 2 and filters, and two filter 3 of installing filter screen 2 respectively promptly are connected with the laminating of the first valve plate 41 of both sides respectively, and the mode accessible welding of connecting forms encapsulation structure as an organic whole. At this moment, the valve core 4, the filter plate 3 and the filter screen 2 can be directly welded with the pipeline to form a part of the pipeline, and the corresponding function of the throttle valve can be realized.
In some preferred embodiments, the middle part of the filter plate 3 is provided with a conical cavity 33, the filter holes 31 are communicated with the conical top of the conical cavity 33, and the filter screen 2 is positioned at the conical bottom of the conical cavity 33. The conical tip is referred to as one end of the conical cavity 33 having a smaller diameter, and the other end of the conical tip, i.e., one end having a larger diameter, is referred to as a conical bottom.
Preferably, the product of the flow area of the conical bottom of the conical cavity 33 and the porosity of the filter screen 2 is larger than the flow area of the filter holes 31.
In conclusion, the valve core structure of the centrifugal throttle valve reduces the speed of fluid passing through the throttle hole and effectively reduces the occurrence of cavitation and corrosion phenomena through the structural design of the throttle hole, the diversion trench, the blind hole and the serial flow hole, and simultaneously increases the flow path of the fluid through the design of the radial flow channel and improves the pressure drop effect under the condition of ensuring the compact structure of the valve core; the valve core structure of the centrifugal throttle valve reduces the sensitivity of the throttle valve to the viscosity of liquid and improves the pressure drop effect after throttling by the structural design of the diversion trench and the improvement of the connection mode of the diversion trench, the blind hole and the throttling hole; the valve core structure of the centrifugal throttle valve is characterized in that through the improvement of a first valve plate and a second valve plate, the number of blind holes and guide grooves in the first valve plate and the number of serial flow holes in the second valve plate are increased, and through the butt joint structural design, the flow path of fluid is prolonged, the flow area of a throttling hole is greatly increased, and the problem of blockage is solved; the valve core structure of the centrifugal throttle valve further improves the throttling effect by overlapping the plurality of valve cores in series; the centrifugal throttle valve device solves the problems of flow resistance increase and flow speed reduction caused by mounting the filter screen through optimizing and improving the structure of the filter plate, and has the advantages of easy mounting, compact structure and the like. The throttle valve can be connected in various forms such as welding and flanges, and is flexible in mounting mode and convenient to use.
In the description of the present application, it is to be understood that the terms "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 present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A centrifugal throttle valve core assembly is characterized by comprising a first valve plate (41) and a second valve plate (42);
the first valve plate (41) is provided with a blind hole (410) and an orifice (412), the orifice (412) is a through hole formed along the axial direction of the first valve plate (41), and the orifice (412) is communicated with the blind hole (410) through a diversion trench (411);
the second valve plate (42) is provided with a serial flow hole (420), and the serial flow hole (420) is a through hole formed along the axial direction of the second valve plate (42);
the two surfaces of the second valve plate (42) are respectively attached to and connected with one valve core (4) formed by the first valve plate (41), and the blind hole (410) is communicated with the serial flow hole (420).
2. The centrifugal throttle valve core assembly according to claim 1, characterized in that the guide groove (411) is tangential to the throttle hole (412) and/or the guide groove (411) is tangential to the blind hole (410).
3. The valve core assembly of claim 1 or 2, wherein the flow guiding groove (411) is any one of a rectangular groove, a trapezoidal groove or an arc-shaped groove.
4. The valve core assembly of the centrifugal throttle valve according to claim 1, wherein the first valve plate (41) is provided with an odd number of the blind holes (410), one of the blind holes (410) is communicated with the throttle hole (412), and every two of the rest even number of the blind holes (410) are relatively independent after being communicated through one guide groove (411);
the serial flow holes (420) on the second valve plate (42) are the same as the number of the blind holes (410) in one first valve plate (41); the number of the blind holes (410) in the first valve plate (41) is more than or equal to 3;
fluid flows in from the throttle hole (412) on one side, passes through the plurality of blind holes (410) and the plurality of serial holes (420), and then flows out from the throttle hole (412) on the other side.
5. The valve core assembly of the centrifugal throttle valve according to claim 4, characterized in that the diameter of the serial flow hole (420) is 0.1-5 mm, and the diameter of the blind hole (410) is 1.5-3.5 times of the diameter of the serial flow hole (420).
6. The throttle valve cartridge assembly of claim 1 or 4, characterized by comprising a plurality of sets of the cartridges (4), the plurality of sets of cartridges (4) being connected in series one after the other through the orifice (412).
7. A centrifugal throttle valve, characterized in that, the centrifugal throttle valve core assembly according to any one of claims 1-6 is adopted, and further comprises a filter plate (3) and a filter screen (2);
the filter plate (3) is provided with filter holes (31) and clamping grooves (32), the filter screen (2) is connected into the filter plate (3) through the clamping grooves (32), and the filter holes (31) are through holes arranged along the axial direction of the filter plate (3);
the two filter plates (3) are respectively attached to the first valve plates (41) on two sides of the second valve plate (42), and the filter holes (31) are communicated with the throttle holes (412).
8. Centrifugal throttle valve according to claim 7, characterized in that there are a plurality of said filter plates (3) located on the same side of said first valve plate (41), a plurality of said filter plates (3) being connected in series.
9. The throttling centrifugal valve according to claim 7, characterized in that the filter plate (3) is provided with a conical cavity (33), the filter holes (31) communicating with the conical top of the conical cavity (33), the filter screen (2) being located at the conical bottom of the conical cavity (33).
10. The throttling centrifugal valve according to claim 9, characterized in that the product of the flow area of the conical bottom of the conical chamber (33) and the porosity of the screen (2) is larger than the flow area of the filter holes (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011225377.9A CN112254383B (en) | 2020-11-05 | 2020-11-05 | Throttle valve core assembly and throttle valve thereof |
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| CN202011225377.9A CN112254383B (en) | 2020-11-05 | 2020-11-05 | Throttle valve core assembly and throttle valve thereof |
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| CN112254383A CN112254383A (en) | 2021-01-22 |
| CN112254383B true CN112254383B (en) | 2021-12-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113513862B (en) * | 2021-04-01 | 2022-10-21 | 西安交通大学 | Series throttle valve |
| CN114667035B (en) * | 2022-03-02 | 2023-05-26 | 中国电子科技集团公司第二十九研究所 | Flow resistance adjustable simulation leads to fluidic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2270865Y (en) * | 1996-04-09 | 1997-12-17 | 沈才根 | Throttling ring in high temp high pressure regulating valve |
| JP3687499B2 (en) * | 2000-06-30 | 2005-08-24 | 豊田工機株式会社 | Flow control valve |
| CN2529052Y (en) * | 2002-01-17 | 2003-01-01 | 江苏宇达电站辅机阀门制造有限公司 | Throttling element |
| CN106555895B (en) * | 2017-01-17 | 2019-02-19 | 杭州华惠阀门有限公司 | Control valve |
| CN209839190U (en) * | 2019-03-19 | 2019-12-24 | 萨姆森控制设备（中国）有限公司 | Valve cage composite structure for stepped pressure reduction and regulating valve for installing valve cage composite structure |
| CN111720568A (en) * | 2019-03-19 | 2020-09-29 | 萨姆森控制设备（中国）有限公司 | Valve cage composite structure for stepped pressure reduction and regulating valve for installing valve cage composite structure |
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