CN212203192U - Level four cage type regulating valve - Google Patents
Level four cage type regulating valve Download PDFInfo
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- CN212203192U CN212203192U CN202020731943.2U CN202020731943U CN212203192U CN 212203192 U CN212203192 U CN 212203192U CN 202020731943 U CN202020731943 U CN 202020731943U CN 212203192 U CN212203192 U CN 212203192U
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Abstract
The utility model relates to a four-stage cage type regulating valve, which comprises a valve body, a valve seat, a valve core, a noise reduction cage and an upper valve cover; the upper valve cover is located above the valve body, the valve seat is installed in the valve body, the valve core comprises a valve core rod and a valve core body which are integrally connected, the valve core body is a cavity with a downward opening, the valve core body is located inside the valve seat, the valve core rod penetrates through the upper valve cover, the noise reduction cage is located on the periphery of the upper portion of the valve seat, a first buffer space is formed between the lower portion of the valve core body and the lower portion of the valve seat, a second buffer space is formed between the upper portion of the valve core body and the upper portion of the valve seat, and a third. The utility model provides a technical scheme is based on multistage step-down principle, through punching on case and disk seat, can make the fluid step by step by step, prevents that the fluid from producing cavitation when the high pressure difference, flash distillation phenomenon from causing the damage to equipment, and then has improved the life of governing valve.
Description
Technical Field
The utility model relates to a valve field especially relates to a level four cage type adjusting valve.
Background
China is a big energy country, high-pressure working conditions are more and more, and high-pressure regulating valves are more and more widely used, especially in occasions with high pressure difference and cavitation erosion resistance. In a liquid medium, under the condition that the pressure behind the valve is lower than the saturated vapor pressure of the liquid medium, flash evaporation can occur, the valve internal parts are greatly damaged, the fluid can be dispersed into a plurality of small jet flows by the porous valve core, the energy of each jet flow is mutually offset, the erosion damage to the valve internal parts is reduced, and the service life of the regulating valve is prolonged.
After tertiary decompression in the governing valve, the velocity of flow is still too fast behind the valve, often adopts the mode that increases orifice plate, and its principle is: when a fluid flows in a pipeline, the pressure of the fluid is reduced and energy is lost due to the local resistance of the orifice plate, and the phenomenon is thermodynamically called throttling phenomenon.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide a four-stage cage type regulating valve which overcomes or at least partially solves the above problems.
According to one aspect of the utility model, a four-stage cage type regulating valve is provided, which comprises a valve body, a valve seat, a valve core, a noise reduction cage and an upper valve cover; the upper valve cover is located above the valve body, the valve seat is installed in the valve body, the valve core comprises a valve core rod and a valve core body which are integrally connected, the valve core body is a cavity with a downward opening, the valve core body is located inside the valve seat, the valve core rod penetrates through the upper valve cover, the noise reduction cage is located on the periphery of the upper portion of the valve seat, a first buffer space is formed between the lower portion of the valve core body and the lower portion of the valve seat, a second buffer space is formed between the upper portion of the valve core body and the upper portion of the valve seat, and a third.
In one possible embodiment, a valve seat gasket is provided between the valve body and the valve seat.
In one possible embodiment, a guide sleeve is arranged between the bottom end of the upper valve cover and the valve core rod.
In one possible embodiment, a valve cover gasket is provided at the junction of the upper valve cover and the valve body.
In one possible embodiment, the upper bonnet and the valve body are connected by a threaded connection.
In a possible embodiment, the top of the upper valve cover is provided with a groove, packing is filled in the groove, a packing gland is arranged above the groove, and the valve core rod penetrates through the groove and the packing gland.
In one possible embodiment, a guide strip is arranged between the packing gland and the valve core rod.
The utility model provides a technical scheme is based on multistage step-down principle, through punching on case and disk seat, can make the fluid step by step by step, prevents that the fluid from producing cavitation when the high pressure difference, flash distillation phenomenon from causing the damage to equipment, and then has improved the life of governing valve.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an assembly structure view of the present invention;
FIG. 2 is a cross-sectional view of the valve seat;
FIG. 3 is an enlarged view of a portion of FIG. 1;
description of reference numerals:
1-valve body, 2-valve seat gasket, 3-valve seat, 41-valve core rod, 42-valve core body, 5-noise reduction cage, 6-guide sleeve, 7-upper valve cover, 8-valve cover gasket, 9-stud bolt, 10-nut 10, 11-packing, 12-packing gland, 13-guide lining belt, 14-round nut, and 15-dustproof ring.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terms "comprises" and "comprising," and any variations thereof, in the described embodiments of the invention, and in the claims and drawings, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
1-3, the embodiment of the utility model provides a level four cage type governing valve, include valve body 1, disk seat 3, case, fall cage 5 and the upper valve lid 7 of making an uproar.
The upper valve cover 7 is located above the valve body 1, the valve seat 3 is installed in the valve body 1, the valve core includes a valve core rod 41 and a valve core body 42 which are integrally connected, the valve core body 42 is a cavity with a downward opening, the valve core body 42 is located inside the valve seat 3, the valve core rod 41 penetrates through the upper valve cover 7, and the noise reduction cage 5 is located on the periphery of the upper portion of the valve seat 3, wherein the valve core body 42 and the lower portion of the valve seat 3 form a first buffer space 801, the valve core body 42 and the upper portion of the valve seat 3 form a second buffer space 802, the noise reduction cage 5 and the upper portion of the valve seat 3 form a third buffer space 803, a medium penetrates through the lower portion of the valve seat 3 and the side of the valve core body 42, flows into the first buffer space 801, then penetrates through the top of the valve core body 42, flows into the second buffer space 802, finally penetrates through the upper portion of the. The direction of the arrows in fig. 1 is the direction of flow of the medium.
In one example, a valve seat gasket 2 is arranged between the valve body 1 and the valve seat 3 to play a static sealing role.
In one example, a guide sleeve 6 is provided between the bottom end of the upper valve cover 7 and the spool rod 41.
In one example, a bonnet gasket 8 is provided at the junction of the upper bonnet 7 and the valve body 1.
In one example, the upper bonnet 7 and the valve body 1 are connected by a threaded connection, illustratively a stud 9 and a nut 10.
In one example, the top of the upper valve cover 7 is provided with a groove, packing 11 is arranged in the groove, sealing action is started, a packing gland 12 is arranged above the groove, and the valve core rod 41 penetrates through the groove and the packing gland 12.
In one example, a guide strip 13 is provided between the packing gland 12 and the valve core rod 41 to function as a valve rod guide.
In one example, the actuator is secured to the top of the upper bonnet 7 by a round nut 14.
In one example, the packing gland 12 is fitted with a dust ring 15.
In one example, the valve core body 42, the valve seat 3 and the noise reduction cage 5 are all provided with flow holes, and the medium passes through the flow holes when passing through the valve core body 42, the valve seat 3 and the noise reduction cage 5.
In one example, there is a shaft hole clearance fit between the upper valve cover 7 and the valve core rod 41 to form a guide, and there is a shaft hole clearance fit between the valve seat 3 and the valve core body 42 to form a guide, which plays a role of double guide for the four-stage cage type regulating valve.
After the medium is subjected to three-level pressure reduction, the medium flows through the noise reduction valve cage, further pressure reduction is performed while noise reduction is performed, the flow speed is reduced, and the fluid is prevented from generating cavitation phenomenon to damage equipment when the pressure difference is high.
The valve seat 3, the valve core and the noise reduction cage 5 form a multi-stage throttling element, and flow holes in the multi-stage throttling element can effectively play a role in reducing noise.
Can reduce pressure behind the valve on the orifice plate technology behind the valve, the utility model discloses the cage of making an uproar falls in the design in the valve, falls the cage design of making an uproar and reduces the velocity of flow in the governing valve export, avoids throttle back velocity of flow to cause the damage to the pipeline at the excessive speed, can select the position of falling the cage of making an uproar according to the fluid flow direction.
The utility model provides a technical scheme is based on multistage step-down principle, through punching on case and disk seat, can make the fluid step by step by step, prevents that the fluid from producing cavitation when the high pressure difference, flash distillation phenomenon from causing the damage to equipment, and then has improved the life of governing valve.
The fluid passes through disk seat, case, disk seat, and the flow need increase step by step, and the trompil area increases step by step, and the cage trompil of making an uproar should be greater than last one-level trompil area of falling.
The medium pressure after the noise reduction cage cannot be less than 55% of the medium pressure before the noise reduction cage, and when the medium pressure is less than the medium pressure, a single-stage noise reduction cage cannot be used, and a multi-stage noise reduction cage is selected.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A four-stage cage type regulating valve is characterized by comprising a valve body (1), a valve seat (3), a valve core, a noise reduction cage (5) and an upper valve cover (7);
the upper valve cover (7) is located above the valve body (1), the valve seat (3) is installed in the valve body (1), the valve core comprises a valve core rod (41) and a valve core body (42) which are integrally connected, the valve core body (42) is a cavity with a downward opening, the valve core body (42) is located inside the valve seat (3), the valve core rod (41) penetrates through the upper valve cover (7), the noise reduction cage (5) is located on the periphery of the upper portion of the valve seat (3), the valve core body (42) and the lower portion of the valve seat (3) form a first buffer space (801), the valve core body (42) and the upper portion of the valve seat (3) form a second buffer space (802), and the noise reduction cage (5) and the upper portion of the valve seat (3) form a third buffer space (803).
2. Four-stage cage regulating valve according to claim 1, characterized in that a valve seat gasket (2) is arranged between the valve body (1) and the valve seat (3).
3. The four-stage cage regulating valve according to claim 1, characterized in that a guide sleeve (6) is arranged between the bottom end of the upper valve cover (7) and the valve core rod (41).
4. The four-stage cage regulating valve according to claim 1, characterized in that the junction of the upper valve cover (7) and the valve body (1) is provided with a valve cover gasket (8).
5. The four-stage cage regulating valve according to claim 1, characterized in that the upper valve cover (7) and the valve body (1) are connected by a threaded connection.
6. The four-stage cage regulating valve according to claim 1, wherein a groove is formed in the top of the upper valve cover (7), packing (11) is filled in the groove, a packing gland (12) is arranged above the groove, and the valve core rod (41) penetrates through the groove and the packing gland (12).
7. The four-stage cage regulating valve according to claim 6, characterized in that a guide strip (13) is arranged between the packing gland (12) and the valve core rod (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020731943.2U CN212203192U (en) | 2020-05-07 | 2020-05-07 | Level four cage type regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020731943.2U CN212203192U (en) | 2020-05-07 | 2020-05-07 | Level four cage type regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212203192U true CN212203192U (en) | 2020-12-22 |
Family
ID=73830270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020731943.2U Active CN212203192U (en) | 2020-05-07 | 2020-05-07 | Level four cage type regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212203192U (en) |
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2020
- 2020-05-07 CN CN202020731943.2U patent/CN212203192U/en active Active
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