Erosion-resistant choke

Abstract

The utility model provides a kind of scouring resistance throttle valve, comprising: valve body, the valve body is opened with inflow passage and outflow passage, installation cavity is opened in the valve body;Valve assembly is set in the installation cavity, the medium flow passage is formed in the valve assembly, the medium flow passage is connected when opening the inflow passage and the outflow passage of scouring resistance throttle valve, the inner wall of the medium flow passage is provided with erosion-resistant hard alloy;The inside of the outflow passage is covered with hard alloy.The scheme can effectively improve the anti-erosion ability of throttle valve, increase service life.

Description

Technical Field

[0001] This utility model relates to the field of throttle valve technology, and in particular to an anti-erosion throttle valve. Background Technology

[0002] Traditional throttle valves used in high differential pressure applications face pressures as high as 69 MPa and differential pressures as high as 40 MPa, with the medium exhibiting a three-phase flow of solid, liquid, and gas, making the application environment complex. Furthermore, the large differential pressure makes the internal flow channels of the valve body susceptible to erosion, severely impacting the service life of the throttle valve. Summary of the Invention

[0003] This invention provides an anti-erosion throttling valve to solve the above-mentioned problems.

[0004] This utility model provides an anti-erosion throttling valve, the anti-erosion throttling valve comprising:

[0005] The valve body has an inlet channel and an outlet channel, and the valve body has an installation cavity.

[0006] A valve assembly is disposed within the mounting cavity, and a medium flow channel is formed within the valve assembly. When the anti-erosion throttle valve is opened, the medium flow channel connects the inlet channel and the outlet channel. The inner wall of the medium flow channel is provided with an erosion-resistant hard alloy.

[0007] The interior of the outflow channel is covered with a hard alloy.

[0008] In one embodiment of the present invention, the valve assembly includes a mounting base, a throttling component, and a valve seat arranged sequentially from top to bottom within the mounting cavity. The throttling component contains a valve core, which is used to move up and down to open and close the anti-erosion throttling valve.

[0009] In one embodiment of the present invention, a bushing is provided on the inner wall of the mounting cavity, and a hard alloy layer is provided on the inner side of the bushing. An annular cavity for the medium to enter the throttling component is formed between the hard alloy layer and the throttling component.

[0010] In one embodiment of the present invention, the throttling assembly includes multiple overlapping throttling plates, each throttling plate having a throttling orifice, and the throttling plates are made of hard alloy.

[0011] In one embodiment of the present invention, a central hole is provided on the throttling plate, and a sleeve is integrally formed on the upper throttling plate. An annular groove is provided inside the sleeve. The throttling assembly also includes a metal liner, which is installed in the annular groove. The inner wall of the metal liner is flush with the inner wall of the central hole. The metal liner and the central hole form the moving space of the valve core.

[0012] In one embodiment of the present invention, the valve seat is disposed below the valve core, and an extension portion is provided on the valve seat extending into the outlet channel. The extension portion covers the inner wall of the outlet channel, and a connecting channel is provided along the axial direction of the valve seat. The connecting channel communicates with the interior of the throttling component, and a protective sleeve is provided on the inner wall of the connecting channel. The protective sleeve is made of hard alloy.

[0013] In one embodiment of this utility model, the inner diameter of the protective sleeve gradually increases from top to bottom.

[0014] In one embodiment of the present invention, the anti-erosion throttling valve further includes a valve stem, a valve cover is provided above the valve body, the valve cover seals the upper part of the mounting cavity, the valve stem passes through the valve stem and extends into the throttling assembly to connect with the valve core, and the valve core is made of hard alloy.

[0015] In one embodiment of the present invention, the valve core and the valve stem are connected by a thread, and an anti-rotation pin is provided through the valve core and the valve stem.

[0016] In one embodiment of the present invention, the valve core is provided with a connecting protrusion, the connecting protrusion and the valve core are transitioned at a right angle, and the valve stem is provided with a connecting groove at one end connected to the valve core, and the connecting protrusion is threaded into the connecting groove.

[0017] The beneficial effects of this utility model are as follows: This utility model proposes an anti-erosion throttle valve. During use, a high-pressure differential medium is introduced into the medium flow channel. To prevent long-term erosion and damage to the inner wall of the medium flow channel, a hard alloy is installed on the inner wall to extend the service life of the valve assembly and valve body. The inlet channel facilitates the entry of the medium into the valve body, and the outlet channel facilitates the exit of the medium from the valve body. Attached Figure Description

[0018] 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.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the anti-erosion throttling valve provided in one embodiment of the present invention.

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0022] The attached figures are labeled as follows:

[0023] Valve body 1, inlet channel 101, outlet channel 102, valve cover 2, valve stem 3, connecting groove 301, mounting base 4, throttling assembly 5, throttling plate 501, throttling orifice 5011, sleeve 502, metal liner 503, valve seat 6, extension 601, protective sleeve 7, hard alloy layer 8, bushing 9, valve core 10, connecting protrusion 1011, anti-rotation pin 1012, annular cavity 11. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Please see Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an anti-erosion throttling valve, comprising:

[0028] Valve body 1, with an inlet channel 101 and an outlet channel 102 provided on the valve body 1, and an installation cavity provided inside the valve body 1;

[0029] A valve assembly is installed in the mounting cavity. A medium flow channel is formed inside the valve assembly. When the anti-erosion throttle valve is opened, the medium flow channel connects the inlet channel 101 and the outlet channel 102. The inner wall of the medium flow channel is provided with an erosion-resistant hard alloy.

[0030] The interior of the outflow channel 102 is covered with a hard alloy.

[0031] In this embodiment, a high differential pressure medium is introduced into the medium flow channel. To prevent long-term erosion and damage to the inner wall of the medium flow channel, a hard alloy is provided on the inner wall of the medium flow channel to extend the service life of the valve assembly and valve body 1. The inlet channel 101 is provided to facilitate the entry of the medium into the valve body 1, and the outlet channel 102 is provided to facilitate the exit of the medium from the valve body 1.

[0032] In an exemplary embodiment, the valve assembly includes a mounting base 4, a throttling assembly 5, and a valve seat 6 arranged sequentially from top to bottom within the mounting cavity. The throttling assembly 5 contains a valve core 10, which is used to move up and down to open and close the anti-erosion throttling valve.

[0033] For example, a sealing structure (such as a sealing ring) is provided between the mounting base 4 and the inner wall of the mounting cavity.

[0034] It is worth noting that the mounting base 4 is designed to facilitate the installation of the throttling component 5, and the inner cavity of the mounting base 4 also serves to guide the valve stem 3. The throttling component 5 is designed to throttle, reduce speed, and reduce pressure, thereby reducing the scouring of the valve core 10 by the medium. The valve seat 6 and the valve core 10 are designed to work together to open and close the valve.

[0035] In an exemplary embodiment, a bushing 9 is provided on the inner wall of the mounting cavity, and a hard alloy layer 8 is provided on the inner side of the bushing 9. An annular cavity 11 for the medium to enter the throttling assembly 5 is formed between the hard alloy layer 8 and the throttling assembly 5.

[0036] For example, the inlet channel 101 is provided on one side of the valve body 1, and the outlet channel 102 is provided at the bottom of the valve body 1.

[0037] It is worth noting that the bushing 9 is designed to protect the inner wall of the mounting cavity. For cost reasons, the bushing 9 is made of steel or other metals, and a hard alloy layer 8 is formed inside the bushing 9 through sintering to protect it. The annular cavity 11 is designed to allow the medium to enter from around the throttling assembly 5.

[0038] In an exemplary embodiment, the throttling assembly 5 includes multiple overlapping throttling plates 501, with throttling orifices 5011 formed on the throttling plates 501, and the throttling plates 501 are made of cemented carbide.

[0039] For example, the throttling orifices 5011 are evenly distributed around the circumference of the throttling assembly 5 to prevent the medium from only scouring one side of the valve core 10 and causing damage.

[0040] In this embodiment, the throttling plate 501 is easily eroded when the medium flows in the throttling orifice 5011, therefore the throttling plate 501 is made of hard alloy.

[0041] In an exemplary embodiment, a central hole is provided on the throttling plate 501, and a sleeve 502 is integrally formed on the upper throttling plate 501. An annular groove is provided inside the sleeve 502. The throttling assembly 5 also includes a metal liner 503, which is installed in the annular groove. The inner wall of the metal liner 503 is flush with the inner wall of the central hole. The metal liner 503 and the central hole provide space for the valve core 10 to move.

[0042] In this embodiment, the annular groove is designed to facilitate the installation of the metal liner 503. The metal liner 503 is designed for cost considerations. Since the metal liner 503 is located above the valve core 10 and does not have a throttling orifice 5011, it is less susceptible to media erosion. Therefore, it is made of metal, which effectively reduces costs compared to the throttling assembly 5 being made entirely of hard alloy.

[0043] In this embodiment, the annular cavity 11, the throttling orifice 5011, and the lower end of the movable space together form a medium flow channel.

[0044] In an exemplary embodiment, the valve seat 6 is disposed below the valve core 10, and an extension 601 is provided on the valve seat 6 extending into the outlet channel 102. The extension 601 covers the inner wall of the outlet channel 102, and a connecting channel is provided along the axial direction of the valve seat 6. The connecting channel communicates with the interior of the throttling component 5, and a protective sleeve 7 is provided on the inner wall of the connecting channel. The protective sleeve 7 is made of hard alloy.

[0045] In this embodiment, the extension 601 covers the inner wall of the outflow channel 102 to protect the inner wall of the outflow channel 102 and prevent it from directly contacting the medium. The valve seat 6 is made of metal. To protect the valve seat 6, a protective sleeve 7 is provided inside the valve seat 6. The protective sleeve 7 is made of hard alloy to reduce damage caused by medium erosion.

[0046] In one exemplary embodiment, the inner diameter of the protective sleeve 7 gradually increases from top to bottom.

[0047] For example, the protective sleeve 7 is thermally embedded with the valve seat 6, and a step is set between them to limit the movement and prevent the protective sleeve 7 from falling out of the valve seat 6.

[0048] It is worth noting that the inner diameter of the protective sleeve 7 gradually increases in order to adjust the medium flow rate and solve the scouring problem caused by medium flash evaporation.

[0049] In an exemplary embodiment, the anti-erosion throttling valve further includes a valve stem 3, a valve cover 2 is provided above the valve body 1, the valve cover 2 seals the upper part of the mounting cavity, the valve stem 3 passes through the valve stem 3 and extends into the throttling assembly 5 to connect with the valve core 10, the valve core 10 is made of hard alloy.

[0050] In this embodiment, since the valve core 10 is easily eroded by the medium, it is made of hard alloy. The valve stem 3 generally does not come into direct contact with the medium, so the valve stem 3 is made of metal (such as steel).

[0051] In an exemplary embodiment, the valve core 10 and the valve stem 3 are connected by a thread, and an anti-rotation pin 1012 is provided through the valve core 10 and the valve stem 3.

[0052] In this embodiment, the valve core 10 and the valve stem 3 are threaded together. To prevent the valve core 10 from rotating relative to the valve stem 3, an anti-rotation pin 1012 is provided.

[0053] For example, after the anti-rotation pin 1012 is set, it is welded to the valve stem 3.

[0054] In an exemplary embodiment, the valve core 10 is provided with a connecting protrusion 1011, which transitions at a right angle to the valve core 10. The valve stem 3 is provided with a connecting groove 301 at one end connected to the valve core 10, and the connecting protrusion 1011 is threaded into the connecting groove 301.

[0055] In this embodiment, the valve stem 3 is made of metal and supports the valve core 10 made of hard alloy. The valve stem 3 and the valve core 10 are connected by threads, and then the anti-rotation pin 1012 is inserted and welded in place to increase the reliability and stability of the connection and improve its service life.

[0056] 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. An anti-erosion throttling valve, characterized in that, include: The valve body has an inlet channel and an outlet channel, and the valve body has an installation cavity. A valve assembly is disposed within the mounting cavity, and a medium flow channel is formed within the valve assembly. When the anti-erosion throttle valve is opened, the medium flow channel connects the inlet channel and the outlet channel. The inner wall of the medium flow channel is provided with an erosion-resistant hard alloy. The interior of the outflow channel is covered with a hard alloy.

2. The anti-erosion throttling valve according to claim 1, characterized in that, The valve assembly includes a mounting base, a throttling component, and a valve seat arranged sequentially from top to bottom within the mounting cavity. The throttling component contains a valve core, which is used to move up and down to open and close the anti-erosion throttling valve.

3. The anti-erosion throttling valve according to claim 2, characterized in that, The inner wall of the mounting cavity is provided with a bushing, and a hard alloy layer is provided on the inner side of the bushing. An annular cavity for the medium to enter the throttling component is formed between the hard alloy layer and the throttling component.

4. The anti-erosion throttling valve according to claim 2, characterized in that, The throttling assembly includes multiple overlapping throttling plates, each throttling plate having a throttling orifice, and the throttling plates are made of hard alloy.

5. The anti-erosion throttling valve according to claim 4, characterized in that, The throttling plate has a central hole, and a sleeve is integrally formed on the upper throttling plate. An annular groove is provided inside the sleeve. The throttling assembly also includes a metal liner, which is installed in the annular groove. The inner wall of the metal liner is flush with the inner wall of the central hole. The metal liner and the central hole provide the movement space for the valve core.

6. The anti-erosion throttling valve according to claim 2, characterized in that, The valve seat is disposed below the valve core, and an extension portion is provided on the valve seat extending into the outlet channel. The extension portion covers the inner wall of the outlet channel. A connecting channel is provided along the axial direction of the valve seat. The connecting channel communicates with the interior of the throttling assembly. A protective sleeve is provided on the inner wall of the connecting channel. The protective sleeve is made of hard alloy.

7. The anti-erosion throttling valve according to claim 6, characterized in that, The inner diameter of the protective sleeve gradually increases from top to bottom.

8. The anti-erosion throttling valve according to claim 2, characterized in that, The anti-erosion throttling valve also includes a valve stem, and a valve cover is provided above the valve body. The valve cover seals the upper part of the mounting cavity. The valve stem passes through the valve stem and extends into the throttling assembly to connect with the valve core. The valve core is made of hard alloy.

9. The anti-erosion throttling valve according to claim 8, characterized in that, The valve core and the valve stem are connected by a thread, and an anti-rotation pin is provided through the valve core and the valve stem.

10. The anti-erosion throttling valve according to claim 9, characterized in that, The valve core is provided with a connecting protrusion, and the connecting protrusion transitions to the valve core at a right angle. The valve stem is provided with a connecting groove at one end that connects to the valve core. The connecting protrusion is inserted into the connecting groove and then threadedly connected.

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