CN216843197U - Low-temperature pressure division control valve - Google Patents
Low-temperature pressure division control valve Download PDFInfo
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- CN216843197U CN216843197U CN202220009258.8U CN202220009258U CN216843197U CN 216843197 U CN216843197 U CN 216843197U CN 202220009258 U CN202220009258 U CN 202220009258U CN 216843197 U CN216843197 U CN 216843197U
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Abstract
The utility model discloses a low-temperature pressure dividing control valve, which comprises a valve body; the valve comprises a valve body, a balance cylinder, a valve rod, a valve plug, a valve rod and a valve rod, wherein the valve rod is fixedly connected with the valve plug; a partial pressure pore plate is arranged inside the liquid discharge pipe and close to the outflow end; the utility model discloses it has the partial pressure orifice plate that distributes there is the partial pressure outage to have set up for whole valve body produces the pressure differential, has raised the valve backpressure of cryogenic valve subassembly, makes the pressure drop on the cryogenic valve reduce, and the cryogenic valve avoids cavitation destruction under the low temperature liquid high pressure difference operating mode, adopts the design of partial pressure orifice plate and cryogenic valve subassembly integration in addition, and the control valve all is in suitable aperture under each operating mode point.
Description
Technical Field
The utility model relates to a governing valve technical field specifically is low temperature partial pressure control valve.
Background
The low-temperature pressure dividing control valve is applied to flow and pressure regulation of low-temperature high-pressure media, cavitation is easily formed when high-pressure liquid flows through a throttling surface of the valve, so that the internal part of the valve is damaged, in the prior art, the surface hardness of the internal part of the throttling valve is improved by surfacing hard alloy, and the service life of the valve is short when the pressure difference is large; the other technology adopts a porous sleeve structure and is divided into a one-stage sleeve and a multi-stage sleeve scheme: the primary sleeve still has damage risk when the pressure difference is larger; the multi-stage sleeve is limited by the space in the valve, so that the fluid capacity is small, the throttling hole is easy to block, and the working condition of low-temperature medium with large pressure difference and large flow cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low temperature partial pressure control valve to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the low-temperature pressure division control valve comprises a valve body; the valve comprises a valve body, a balance cylinder, a valve rod, a valve plug, a valve rod and a valve rod, wherein the valve rod is fixedly connected with the valve plug;
a pressure-dividing pore plate is arranged in the liquid discharge pipe close to the outflow end, pressure-dividing liquid discharge holes are uniformly distributed on the surface of the pressure-dividing pore plate, the pipe diameter of the liquid discharge pipe is enlarged along the liquid outflow direction, and a horn-shaped liquid discharge channel is arranged in the liquid discharge pipe;
the valve plug closely laminates with the sleeve, and telescopic surperficial evenly distributed has the through-hole, the outer lane of sleeve bottom is equipped with the seal ring with valve body zonulae occludens, and the central point department of sleeve bottom is equipped with the drain passageway.
Preferably, the feed liquor pipe passes through feed liquor pipe flange and valve body fixed connection, and feed liquor pipe flange passes through feed liquor pipe flange bolt and valve body fixed connection, the inside of feed liquor pipe is equipped with the inlet channel with the valve body intercommunication.
Preferably, the drain pipe is fixedly connected with the valve body through a drain pipe flange, and the drain pipe flange is fixedly connected with the valve body through a drain pipe flange bolt.
Preferably, the top of the outer ring of the balance cylinder is provided with an installation clamping ring, and the top and the bottom of the joint of the installation clamping ring and the valve body are respectively sleeved with a sealing ring.
Preferably, the extension pipe is fixedly installed at the top of the valve body through a middle flange, the middle flange is fixedly connected with the valve body through a middle flange bolt, and an annular gland embedded into the top of the installation clamping ring is arranged at the bottom of the middle flange.
Preferably, the central point department at valve plug top is equipped with the valve plug mount pad, and the bottom of valve rod be equipped with valve plug mount pad fixed connection's valve rod connector, the valve rod top is extended the extension pipe top and is equipped with valve rod ejector pin.
Preferably, the outer surface of the valve rod at the top of the elongated tube is sleeved with a stuffing box accessory, and the lower half section of the stuffing box accessory is embedded into the elongated tube.
Preferably, one side of the stuffing box accessory is provided with a stuffing box accessory mounting foot, the stuffing box accessory mounting foot is fixedly connected with the lengthening pipe through a stuffing box accessory bolt, and a stuffing box wrapped on the outer surface of the valve rod is arranged in the stuffing box accessory inside the lengthening pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses set up the partial pressure orifice plate that distributes and distribute the partial pressure outage, made whole valve body produce the pressure differential, raised the valve back pressure of low temperature valve subassembly, made the pressure drop on the low temperature valve reduce, the low temperature valve avoids cavitation damage under the high pressure difference operating mode of low temperature liquid, adopt partial pressure orifice plate and low temperature valve subassembly integrated design in addition, the control valve is in suitable aperture under each operating mode point;
2. the utility model has the advantages of simple integral structure, the inside sleeve that has the through-hole of adopting of valve body and valve plug are constituteed, have reduced the structural requirement and the manufacturing cost of cryogenic valve subassembly itself for multistage telescopic mode, can satisfy the operation requirement of low temperature high pressure liquid operating mode, have improved the life and the security performance of product, and have guaranteed fluid transmission's smoothness nature, have reduced the risk of low temperature medium jam.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the cryogenic valve assembly of the present invention;
fig. 3 is a schematic view of the outer surface of the present invention;
fig. 4 is an enlarged schematic view of a detail a in fig. 2 according to the present invention.
In the figure: 1. a liquid inlet pipe; 101. a liquid inlet pipe flange; 102. a liquid inlet channel; 103. a liquid inlet pipe flange bolt; 2. a valve body; 3. a liquid discharge pipe; 301. a drain pipe flange; 302. a drain pipe flange bolt; 303. a horn-shaped liquid discharge channel; 4. a pressure dividing pore plate; 401. a partial pressure drain hole; 5. a middle flange; 501. a middle flange bolt; 6. lengthening a pipe; 7. a valve stem; 701. a valve rod ejector rod; 702. a valve rod connector; 8. a stuffing box attachment; 801. a stuffing box attachment bolt; 802. a stuffing box accessory mounting foot; 9. a stuffing box; 10. a sleeve; 1001. a through hole; 1002. a sealing gasket; 1003. a drainage channel; 11. a valve plug; 1101. a valve plug mounting seat; 12. a balancing cylinder; 1201. and installing a snap ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides an embodiment: the low-temperature pressure division control valve comprises a valve body 2; the liquid inlet pipe 1 is installed at the input end of the valve body 2, the liquid discharge pipe 3 is installed at the output end of the valve body 2, a sleeve 10 is installed on one side, close to the liquid inlet pipe 1, inside the valve body 2 through a balance cylinder 12, a valve plug 11 is installed inside the sleeve 10, the lengthening pipe 6 is installed at the top of the valve body 2, a valve rod 7 fixedly connected with the valve plug 11 is installed inside the lengthening pipe 6, and the valve rod 7 extends to the top end of the lengthening pipe 6;
a partial pressure pore plate 4 is arranged in the liquid discharge pipe 3 close to the outflow end, partial pressure liquid discharge holes 401 are uniformly distributed on the surface of the partial pressure pore plate 4, the pipe diameter of the liquid discharge pipe 3 is enlarged along the liquid outflow direction, and a horn-shaped liquid discharge channel 303 is arranged in the liquid discharge pipe 3;
the valve plug 11 is tightly attached to the sleeve 10, through holes 1001 are uniformly distributed on the surface of the sleeve 10, a sealing washer 1002 tightly connected with the valve body 2 is arranged on the outer ring of the bottom of the sleeve 10, and a liquid guide channel 1003 is arranged in the central position of the bottom of the sleeve 10;
specifically, the low temperature medium flows into in the valve body 2 through feed liquor pipe 1, the lift of valve rod 7 adjusts valve plug 11 height in the extension pipe 6 through the low temperature valve subassembly, and then the aperture to sleeve 10 surface through-hole 1001 is controlled, the low temperature medium flows into in the fluid-discharge tube 3 through-hole 1001 and the drain passage 1003 on sleeve 10 surface, the liquid medium passes through the even outflow of partial pressure outage 401 on the partial pressure orifice plate 4 in the fluid-discharge tube 3, the liquid pressure through partial pressure orifice plate 4 is bigger for the pressure of low temperature valve subassembly, the valve back pressure of low temperature valve subassembly has been raised, make the pressure drop on the low temperature valve reduce, low temperature valve avoids cavitation damage under low temperature liquid high pressure difference operating mode, the pipe diameter of fluid-discharge tube 3 can guarantee liquid medium's quick discharge along the liquid outflow direction mode of enlargiing.
Further, the liquid inlet pipe 1 is fixedly connected with the valve body 2 through a liquid inlet pipe flange 101, the liquid inlet pipe flange 101 is fixedly connected with the valve body 2 through a liquid inlet pipe flange bolt 103, and a liquid inlet channel 102 communicated with the valve body 2 is arranged inside the liquid inlet pipe 1;
specifically, the liquid inlet pipe flange 101 is connected with the valve body 2 through the liquid inlet pipe flange bolt 103, so that the liquid inlet pipe 1 is conveniently and fixedly connected with the valve body 2, and the liquid inlet channel 102 can ensure smooth inflow of media.
Further, the drain pipe 3 is fixedly connected with the valve body 2 through a drain pipe flange 301, and the drain pipe flange 301 is fixedly connected with the valve body 2 through a drain pipe flange bolt 302;
specifically, the drain pipe flange 301 facilitates installation of the drain pipe 3, and the drain pipe flange bolts 302 facilitate fixed connection of the drain pipe flange 301 with the valve body 2.
Further, an installation clamping ring 1201 is arranged at the top of the outer ring of the balance cylinder 12, and sealing rings are sleeved at the top and the bottom of the joint of the installation clamping ring 1201 and the valve body 2;
specifically, the mounting snap ring 1201 can ensure the stability of the balance cylinder 12 when mounted inside the valve body 2, and the sealing ring can ensure the sealing performance of the mounting position of the balance cylinder 12.
Further, the lengthening pipe 6 is fixedly installed at the top of the valve body 2 through a middle flange 5, the middle flange 5 is fixedly connected with the valve body 2 through a middle flange bolt 501, and an annular gland embedded into the top of the installation clamping ring 1201 is arranged at the bottom of the middle flange 5;
specifically, the middle flange 5 facilitates the fixed installation of the lengthening pipe 6, the middle flange bolts 501 facilitate the fixed connection of the middle flange 5 and the valve body 2, and the annular gland at the bottom of the middle flange 5 can compress the installation clamping ring 1201, so that the firmness of the balance cylinder 12 can be ensured.
Further, a valve plug mounting seat 1101 is arranged at the center of the top of the valve plug 11, a valve rod connector 702 fixedly connected with the valve plug mounting seat 1101 is arranged at the bottom of the valve rod 7, and a valve rod ejector rod 701 is arranged at the top of the extended pipe 6 extending out of the top end of the valve rod 7;
specifically, the valve plug mount pad 1101 can be tightly connected with the valve rod connector 702, so as to ensure the firmness of connection of the valve plug 11 and the valve rod 7, and the valve rod push rod 701 can facilitate the operation of a worker on the valve rod 7.
Further, the outer surface of the valve rod 7 at the top of the lengthened pipe 6 is sleeved with a stuffing box accessory 8, and the lower half section of the stuffing box accessory 8 is embedded into the lengthened pipe 6;
specifically, the stuffing box accessory 8 can ensure that the valve rod 7 is installed in the sealing performance of the extension pipe 6, and the liquid seepage situation is avoided.
Further, one side of the stuffing box accessory 8 is provided with a stuffing box accessory mounting foot 802, the stuffing box accessory mounting foot 802 is fixedly connected with the elongated tube 6 through a stuffing box accessory bolt 801, and a stuffing box 9 wrapped on the outer surface of the valve rod 7 is arranged in the stuffing box accessory 8 inside the elongated tube 6;
specifically, the stuffing box accessory mounting foot 802 facilitates the fixed connection of the stuffing box accessory 8 with the elongated tube 6 through the stuffing box accessory bolt 801, and the stuffing box 9 can be made of polytetrafluoroethylene and the like, and mainly plays a role in sealing.
The working principle is as follows: during operation, low temperature medium flows into in the valve body 2 through feed liquor pipe 1, the lift of valve rod 7 is adjusted the height of valve plug 11 in the extension pipe 6 through the cryogenic valve subassembly, and then the aperture to sleeve 10 surface through-hole 1001 is controlled, low temperature medium passes through-hole 1001 and drain passage 1003 on sleeve 10 surface and flows into in the fluid-discharge tube 3, the even outflow of partial pressure outage 401 on the partial pressure orifice plate 4 in the fluid-discharge tube 3 is passed through to liquid medium, the liquid pressure through partial pressure orifice plate 4 is bigger for cryogenic valve subassembly's pressure, the valve back pressure of cryogenic valve subassembly has been raised, make the pressure drop on the cryogenic valve reduce, cryogenic valve avoids cavitation damage under cryogenic liquid high-pressure difference operating mode, the pipe diameter of fluid-discharge tube 3 can guarantee liquid medium's quick discharge along the liquid outflow direction mode of enlargeing.
The details of the present invention are well known to those skilled in the art.
Finally, it is to be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified and replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (8)
1. The low-temperature pressure division control valve comprises a valve body (2); the method is characterized in that: the liquid inlet pipe (1) is installed at the input end of the valve body (2), the liquid discharge pipe (3) is installed at the output end of the valve body (2), a sleeve (10) is installed at one side, close to the liquid inlet pipe (1), of the interior of the valve body (2) through a balance cylinder (12), a valve plug (11) is installed inside the sleeve (10), the lengthening pipe (6) is installed at the top of the valve body (2), a valve rod (7) fixedly connected with the valve plug (11) is installed inside the lengthening pipe (6), and the valve rod (7) extends to the top end of the lengthening pipe (6);
a partial pressure pore plate (4) is arranged in the liquid discharge pipe (3) close to the outflow end, partial pressure liquid discharge holes (401) are uniformly distributed on the surface of the partial pressure pore plate (4), the pipe diameter of the liquid discharge pipe (3) is enlarged along the liquid outflow direction, and a horn-shaped liquid discharge channel (303) is arranged in the liquid discharge pipe (3);
valve plug (11) and sleeve (10) closely laminate, and the surperficial evenly distributed of sleeve (10) has through-hole (1001), the outer lane of sleeve (10) bottom is equipped with seal ring (1002) with valve body (2) zonulae occludens, and the central point department of sleeve (10) bottom is equipped with drain passageway (1003).
2. The cryogenic pressure division control valve of claim 1, wherein: feed liquor pipe (1) is through feed liquor pipe flange (101) and valve body (2) fixed connection, and feed liquor pipe flange (101) is through feed liquor pipe flange bolt (103) and valve body (2) fixed connection, the inside of feed liquor pipe (1) is equipped with inlet channel (102) with valve body (2) intercommunication.
3. The cryogenic pressure division control valve of claim 1, wherein: the drain pipe (3) is fixedly connected with the valve body (2) through a drain pipe flange (301), and the drain pipe flange (301) is fixedly connected with the valve body (2) through a drain pipe flange bolt (302).
4. The cryogenic pressure division control valve of claim 1, wherein: the top of the outer ring of the balance cylinder (12) is provided with an installation clamping ring (1201), and the top and the bottom of the joint of the installation clamping ring (1201) and the valve body (2) are sleeved with sealing rings.
5. The cryogenic pressure division control valve of claim 1, wherein: the lengthening pipe (6) is fixedly installed at the top of the valve body (2) through the middle flange (5), the middle flange (5) is fixedly connected with the valve body (2) through the middle flange bolt (501), and the bottom of the middle flange (5) is provided with an annular gland embedded into the top of the installation clamping ring (1201).
6. The cryogenic pressure division control valve of claim 1, wherein: the valve rod is characterized in that a valve plug mounting seat (1101) is arranged at the central position of the top of the valve plug (11), a valve rod connector (702) fixedly connected with the valve plug mounting seat (1101) is arranged at the bottom of the valve rod (7), and a valve rod ejector rod (701) is arranged at the top of the valve rod (7) extending out of the lengthening pipe (6).
7. The cryogenic pressure division control valve of claim 1, wherein: the outer surface of the valve rod (7) at the top of the elongated tube (6) is sleeved with a stuffing box accessory (8), and the lower half section of the stuffing box accessory (8) is embedded into the elongated tube (6).
8. The cryogenic pressure division control valve of claim 7, wherein: one side of the stuffing box accessory (8) is provided with a stuffing box accessory mounting foot (802), the stuffing box accessory mounting foot (802) is fixedly connected with the elongated tube (6) through a stuffing box accessory bolt (801), and a stuffing box (9) wrapped on the outer surface of the valve rod (7) is arranged in the stuffing box accessory (8) inside the elongated tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220009258.8U CN216843197U (en) | 2022-01-05 | 2022-01-05 | Low-temperature pressure division control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220009258.8U CN216843197U (en) | 2022-01-05 | 2022-01-05 | Low-temperature pressure division control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216843197U true CN216843197U (en) | 2022-06-28 |
Family
ID=82114109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220009258.8U Active CN216843197U (en) | 2022-01-05 | 2022-01-05 | Low-temperature pressure division control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216843197U (en) |
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2022
- 2022-01-05 CN CN202220009258.8U patent/CN216843197U/en active Active
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