Throttling components and throttle valves

Abstract

This invention provides a throttling component and a throttling valve. The throttling component includes at least two circular throttling plates arranged vertically and vertically, each plate having a central hole. A labyrinth flow channel for reducing pressure and noise is formed between adjacent plates, and these labyrinth flow channels are not interconnected at the overlapping portions of the plates. The labyrinth flow channels are arranged radially along the throttling plates, and at least two labyrinth flow channels are evenly distributed circumferentially along the formed throttling plates. The throttling component in this design effectively achieves throttling, pressure reduction, and noise reduction.

Description

Technical Field

[0001] This utility model relates to the field of throttle valve technology, and in particular to a throttle assembly and a throttle valve. Background Technology

[0002] Traditional throttling valves used in high differential pressure applications often suffer from pressure drops. The medium pressure can reach as high as 69 MPa, with a differential pressure as high as 40 MPa, and the flow involves a three-phase (solid, liquid, gas) flow. Due to the large differential pressure, the pressure reduction effect of cascade throttling structures (i.e., throttling chambers connected in series) is relatively poor. The medium can be forced to change its flow direction through the valve body and enter the valve core, resulting in severe erosion of the valve body. Summary of the Invention

[0003] This invention provides a throttling component and a throttling valve to solve the technical problem of severe valve body erosion in the prior art.

[0004] This utility model provides a throttling component, comprising: at least two circular throttling plates arranged vertically and vertically, wherein a central hole is formed through the center of each throttling plate, and a labyrinth flow channel for reducing pressure and noise of the medium is formed between adjacent throttling plates, wherein each labyrinth flow channel is not interconnected at the overlapping part of each layer of throttling plate; the labyrinth flow channel is arranged radially along the throttling plate, and at least two labyrinth flow channels are evenly distributed along the circumference of the formed throttling plate.

[0005] In one embodiment of the present invention, the overlapping portion of two adjacent throttling plates includes a lower overlapping surface on the lower throttling plate and an upper overlapping surface on the upper throttling plate. A labyrinth flow channel is provided on the lower overlapping surface and the upper overlapping surface, and the labyrinth flow channels on the upper overlapping surface and the lower overlapping surface are radially offset.

[0006] In one embodiment of the present invention, from the circumference to the center, the labyrinth flow channel includes an inlet channel, at least two parallel diversion channels and at least two outlet channels connected in sequence.

[0007] In one embodiment of this utility model, the diversion and counter-current channels are connected in series by a connecting channel, and the cross-sectional area of ​​the medium in each connecting channel increases sequentially from the circumference to the center.

[0008] In one embodiment of the present invention, the cross-sectional area of ​​the medium in the inlet channel is smaller than the cross-sectional area of ​​the medium in any connecting channel, and the sum of the cross-sectional areas of the medium in the two outlet channels is greater than the cross-sectional area of ​​the medium in any connecting channel.

[0009] In one embodiment of the present invention, along the medium flow direction, the diversion and counterflow channel includes a diversion port, a diversion channel and a counterflow confluence port connected in sequence. The diversion port divides into two diversion channels, and the diversion channels converge relative to each other at the counterflow confluence port.

[0010] In one embodiment of this utility model, from bottom to top, the labyrinth channels provided on each layer of throttling laminations gradually increase from two upwards to a fixed number and then are fixed, wherein the fixed number of channels is greater than or equal to three.

[0011] In one embodiment of this utility model, the throttling laminations are made of hard alloy.

[0012] In one embodiment of the present invention, the throttling assembly further includes an installation sleeve, the top throttling plate is disposed at the bottom of the installation sleeve, the installation sleeve has an installation cavity, and a metal bushing is installed in the installation cavity.

[0013] This utility model also provides a throttling valve, including: the aforementioned throttling component.

[0014] The beneficial effects of this utility model are as follows: The throttling component and valve proposed in this utility model feature a circular throttling plate to facilitate processing and match the shape of other structural components of the regulating valve. The use of a circular throttling plate, rather than a directly integrated columnar structure, allows for the machining of a labyrinthine flow channel on the overlapping surface. The central hole provides space for the movement of the valve core and valve stem. The labyrinthine flow channel guides the flow of the medium, and because the flow channel is designed in a labyrinthine form, energy is dissipated during the medium flow process, resulting in pressure reduction, speed reduction, and noise reduction. This also reduces the scouring force on the valve core and increases its service life. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the throttling component provided in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of a throttling component provided in one embodiment of the present invention.

[0019] Figure 3This is a schematic diagram of the upper surface of the first layer of throttling laminations provided in one embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the lower surface of the second throttling lamination provided in one embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the upper surface of the second throttling lamination provided in one embodiment of the present invention.

[0022] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0023] Figure 7 This is a schematic diagram of the lower surface of the third throttling lamination provided in one embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the upper surface of the third throttling lamination provided in one embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the lower surface of the fourth throttling lamination provided in one embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the upper surface of the fourth throttling lamination provided in one embodiment of the present invention.

[0027] Figure 11 This is a schematic diagram of the lower surface of the fifth throttling lamination provided in one embodiment of the present invention.

[0028] Figure 12 This is a schematic diagram of the upper surface of the fifth throttling lamination provided in one embodiment of the present invention.

[0029] The attached figures are labeled as follows:

[0030] Throttling plate 1, first layer throttling plate 101, second layer throttling plate 102, third layer throttling plate 103, fourth layer throttling plate 104, fifth layer throttling plate 105.

[0031] Labyrinth flow channel 2, inlet channel 201, diversion and counter-current channel 202, diversion port 2021, diversion channel 2022, counter-current confluence port 2023, outlet channel 203, connecting channel 204.

[0032] Center hole 3

[0033] Install sleeve 4,

[0034] Metal bushing 5. Detailed Implementation

[0035] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0037] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0038] Please see Figure 1 To be continued Figure 12 As shown, a throttling component provided in one embodiment of the present invention includes: at least two circular throttling plates 1 arranged vertically and vertically, with a central hole 3 through the center of each throttling plate 1, and a labyrinth flow channel 2 for reducing pressure and noise of the medium formed between two adjacent throttling plates 1, wherein each labyrinth flow channel 2 is not interconnected at the overlapping part of each layer of throttling plate 1; the labyrinth flow channel 2 is arranged radially along the throttling plate 1, and at least two labyrinth flow channels 2 are evenly distributed circumferentially along the formed throttling plate 1.

[0039] In this embodiment, to facilitate processing and to match the shape of other structural components of the regulating valve, the throttling plate 1 is set as a circle. The throttling plate 1, instead of being directly set as an integrated columnar structure, is designed to facilitate the processing of the labyrinth flow channel 2 on the overlapping surface. The central hole 3 provides space for the movement of the valve core and valve stem. The labyrinth flow channel 2 guides the flow of the medium, and because the flow channel is designed in a labyrinth form, it can dissipate energy during the medium flow process, thereby reducing pressure, speed, and noise, reducing the scouring force on the valve core, and increasing the service life of the valve core.

[0040] In use, the medium enters the labyrinth channel 2 from outside the throttling component, then flows along the labyrinth channel 2 to converge in the central hole 3, and then flows out from the lower end of the central hole 3.

[0041] In an exemplary embodiment, the overlapping portion of two adjacent throttling plates 1 includes a lower overlapping surface on the lower throttling plate 1 and an upper overlapping surface on the upper throttling plate 1. A labyrinth flow channel 2 is provided on the lower overlapping surface and the upper overlapping surface, and the labyrinth flow channels 2 on the upper overlapping surface and the lower overlapping surface are radially offset.

[0042] It should be noted that, in order to increase the number of maze channels 2 between the two throttling plates 1, and in order to ensure that the maze channels 2 in each layer do not affect each other, maze channels 2 are opened on the upper and lower overlapping surfaces respectively, and the maze channels 2 are staggered.

[0043] For example, the misalignment angle α of the labyrinth flow channel 2 between the upper and lower overlapping surfaces is 30°.

[0044] In an exemplary embodiment, from the circumference to the center, the maze flow channel 2 includes an inlet channel 201 connected in sequence, at least two parallel diversion channels 202 connected in series, and at least two outlet channels 203.

[0045] In this embodiment, the inlet channel 201 allows external media to pass through and enter the labyrinth channel 2. The diversion and counter-current channel 202 reduces the media flow velocity and disperses the scouring force through diversion and counter-current. The number of outlet channels 203 is greater than that of inlet channels 201 to control the force of the media scouring the valve core and increase the service life of the valve core.

[0046] In an exemplary embodiment, the diversion and counter-current channels 202 are connected in series by a connecting channel 204, and the cross-sectional area of ​​the medium in each connecting channel 204 increases sequentially from the circumference to the center.

[0047] For example, the number of diversion flushing grooves 202 can be two, three, four or more. The more diversion flushing grooves 202 there are, the more the flow rate decreases and the more the scouring force of the medium on the valve core decreases.

[0048] In this embodiment, the cross-sectional area of ​​the medium in each connecting groove 204 increases sequentially from the circumference to the center. This is to make the flow of some particulate matter carried in the medium smoother in the labyrinth channel 2 and reduce the possibility of blockage in the labyrinth channel 2.

[0049] In an exemplary embodiment, the cross-sectional area of ​​the medium in the inlet channel 201 is smaller than the cross-sectional area of ​​the medium in any of the connecting channels 204, and the sum of the cross-sectional areas of the medium in the two outlet channels 203 is greater than the cross-sectional area of ​​the medium in any of the connecting channels 204.

[0050] In this embodiment, the inlet channel 201 has the smallest width, and the branch channel 2022 has a width greater than the inlet channel 201, but less than or equal to the width of the narrowest connecting channel 204. Along the medium flow direction, the width of each connecting channel 204 increases sequentially. The width of a single outlet channel 203 is greater than the width of the inlet channel 201, and the sum of the widths of the two outlet channels 203 is greater than the width of the widest connecting channel 204. The labyrinth channel 2 has a consistent overall depth, and the width settings of the inlet channel 201, connecting channel 204, and outlet channel 203 reduce the possibility of blockage inside the labyrinth channel 2.

[0051] In an exemplary embodiment, along the medium flow direction, the diversion and counterflow channel 202 includes a diversion port 2021, a diversion channel 2022 and a counterflow confluence port 2023 connected in sequence. The diversion port 2021 divides into two diversion channels 2022, and the diversion channels 2022 converge relative to each other at the counterflow confluence port 2023.

[0052] In this embodiment, the media in the two diversion channels 2022 at the countercurrent manifold 2023 are countercurrently flushed to cancel the scouring force of the media, thereby reducing the scouring force on the valve core when the media contacts the valve core.

[0053] In an exemplary embodiment, from bottom to top, the labyrinth channels 2 provided on each layer of throttling laminations 1 gradually increase from two upwards to a fixed number and then are fixed, with the fixed number of channels being greater than or equal to three.

[0054] It is worth noting that the number of maze channels 2 on the throttling plate 1 will not increase after reaching a fixed number, and the number of maze channels 2 on the throttling plate 1 that continues to be stacked on top will remain at a fixed number.

[0055] For example, the number of labyrinth channels 2 provided on the upper and lower surfaces of the intermediate layer throttling stack 1 is the same.

[0056] For example, the throttling plate 1 is provided with five layers, and from bottom to top, the number of labyrinth channels 2 between two adjacent throttling plates 1 is 5, 9, 12 and 12 respectively.

[0057] For example, the throttling stack 1 is provided with five layers, and the number of maze channels 2 opened on the first, second and third layers increases sequentially, while the number of maze channels 2 provided on the fourth and fifth layers is the same as that of the third layer.

[0058] For example, the throttling vane 1 has five layers. From bottom to top, the upper surface of the first layer throttling vane 101 has two maze channels 2, and the lower and upper surfaces of the second layer throttling vane 102 each have three maze channels 2, resulting in a total of five maze channels 2 between the first and second layers. The lower and upper surfaces of the third layer throttling vane 103 each have six maze channels 2, resulting in nine maze channels 2 between the second and third layers. The upper and lower surfaces of the fourth and fifth layers throttling vane 104 and 105 each have six maze channels 2, resulting in twelve maze channels 2 between the third and fourth layers and between the fourth and fifth layers. The upper surface of the fifth throttling plate 105 overlaps with the lower surface of the mounting sleeve 4, forming six labyrinth channels 2 between the upper surface of the fifth throttling plate 105 and the mounting sleeve 4.

[0059] In this embodiment, the number of each layer of the labyrinth flow channel 2 serves two purposes: firstly, to control the scouring force of the outflowing medium on the valve core in each layer of the labyrinth flow channel 2, since the lower part of the valve core has a smaller diameter and weaker scouring resistance than the upper part, therefore, the number of lower labyrinth flow channels 2 is less than the number of middle and upper labyrinth flow channels 2; secondly, to ensure the overall medium flow rate.

[0060] In one exemplary embodiment, the throttling lamination 1 is made of cemented carbide.

[0061] In this embodiment, the throttling lamination 1 is made of hard alloy in order to increase its service life.

[0062] In an exemplary embodiment, the throttling assembly further includes a mounting sleeve 4, with the top throttling plate 1 disposed at the bottom of the mounting sleeve 4, and a mounting cavity provided inside the mounting sleeve 4, into which a metal bushing 5 is installed.

[0063] In this embodiment, considering both cost control and rigidity requirements, the parts that are easily eroded by the medium are made of hard alloy, while the parts that are not easily eroded are made of metal bushings 5.

[0064] In one exemplary embodiment of this application, a throttle valve is provided, including the throttle component described above.

[0065] In this embodiment, the above-mentioned throttling component is applied to the throttling valve to reduce the scouring force of the medium on the valve core.

[0066] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A throttling component, characterized in that, include: At least two circular throttling plates are stacked one on top of the other. A central hole is opened through the center of each throttling plate. A labyrinth flow channel for reducing pressure and noise of the medium is formed between two adjacent throttling plates. Each labyrinth flow channel is not connected to the other at the overlapping part of each layer of throttling plates. The labyrinth flow channel is arranged radially along the throttling plate, and at least two labyrinth flow channels are evenly distributed along the circumference of the formed throttling plate.

2. The throttling component according to claim 1, characterized in that, The overlapping portion of two adjacent throttling plates includes a lower overlapping surface on the lower throttling plate and an upper overlapping surface on the upper throttling plate. Labyrinth flow channels are respectively formed on the lower overlapping surface and the upper overlapping surface, and the labyrinth flow channels on the upper overlapping surface and the lower overlapping surface are radially offset.

3. The throttling component according to claim 1, characterized in that, From the circumference to the center, the labyrinth flow channel includes a sequentially connected inlet channel, at least two series-connected diversion countercurrent channels, and at least two outlet channels.

4. The throttling component according to claim 3, characterized in that, The diversion and counter-current channels are connected in series by a connecting channel, and the cross-sectional area of ​​the medium in each connecting channel increases sequentially from the circumference to the center.

5. The throttling component according to claim 4, characterized in that, The cross-sectional area of ​​the medium in the inlet channel is smaller than the cross-sectional area of ​​the medium in any connecting channel, and the sum of the cross-sectional areas of the medium in the two outlet channels is greater than the cross-sectional area of ​​the medium in any connecting channel.

6. The throttling component according to claim 3, characterized in that, Along the direction of medium flow, the diversion and counter-current channel includes a diversion port, a diversion channel, and a counter-current confluence port connected in sequence. The diversion port branches off into two diversion channels, which converge relative to each other at the counter-current confluence port.

7. The throttling component according to claim 1, characterized in that, From bottom to top, the number of labyrinth channels on each layer of throttling laminations gradually increases from two upwards to a fixed number, which is then fixed at three or more.

8. The throttling component according to claim 1, characterized in that, The throttling laminations are made of cemented carbide.

9. The throttling component according to claim 1, characterized in that, The throttling assembly also includes an installation sleeve, with the top throttling plate disposed at the bottom of the installation sleeve. The installation sleeve has an installation cavity, and a metal bushing is installed inside the installation cavity.

10. A throttle valve, characterized in that, Includes the throttling component as described in any one of claims 1 to 9.

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