CN220646931U - Lengthened upper valve cover structure - Google Patents
Lengthened upper valve cover structure Download PDFInfo
- Publication number
- CN220646931U CN220646931U CN202321788666.9U CN202321788666U CN220646931U CN 220646931 U CN220646931 U CN 220646931U CN 202321788666 U CN202321788666 U CN 202321788666U CN 220646931 U CN220646931 U CN 220646931U
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- China
- Prior art keywords
- valve
- valve cover
- cover
- upper valve
- rod
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- 238000012856 packing Methods 0.000 claims description 24
- 210000004907 gland Anatomy 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 18
- 239000000945 filler Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002411 adverse Effects 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides an elongated upper valve cover structure, and relates to the technical field of valve components. The device includes fixed connection at the upper valve gap at the valve body top, still includes: the valve cover accommodating cavity is arranged in the upper valve cover; a valve plug slidably connected within the valve body; one end of the valve rod penetrates through the upper valve cover and the valve cover cavity, the valve cover cavity is arranged along the axis direction of the valve rod, one end of the valve rod is fixedly connected with the valve plug, and the other end of the valve rod is fixedly connected with the executing mechanism; the valve body cavity, the valve plug and the upper valve cover form a valve body cavity, and the valve body cavity and the valve cover cavity are relatively sealed; and the filler is arranged at the joint of the valve rod and the top end of the upper valve cover. The valve has a simple structure, and can effectively reduce the adverse effect of high-temperature or low-temperature fluid on the action of the filler and the valve rod, thereby ensuring that the valve is not leaked and avoiding the problem of unsmooth movement of the valve rod.
Description
Technical Field
The utility model relates to the technical field of valve components, in particular to an elongated upper valve cover structure.
Background
In regulating control of fluids, there are high or low temperature fluids whose temperature is transferred everywhere to the valve, with effects and damages. At the upper valve cover, the fluid temperature is transferred upward through the upper valve cover and the fluid in the cavity. The high-temperature fluid transfers heat upwards, when the top temperature exceeds the allowable temperature of the filler, the high-temperature fluid will damage the filler, so that the sealing is invalid, and the valve leaks outwards; at the same time, excessive temperatures transfer heat or radiate heat through the connection to the actuator, which can affect its normal operation. The low-temperature fluid is upwards cooled to the top, on one hand, because the valve rod and the filler are contacted with the atmosphere, when the temperature is lower than 0 ℃, the valve rod is frozen, so that the valve rod is blocked and can not act; on the other hand, too low a temperature below the allowable temperature limit of the filler will damage the filler, affecting the sealing effect. In order to ensure the normal use of the valve, the upper valve cover should structurally ensure: the top temperature cannot be lower than 0 ℃ and is within the allowable temperature range of the filler.
Therefore, there is a need for a lengthened upper valve cover structure that is simple in structure, and can effectively reduce the adverse effects of high-temperature or low-temperature fluid on the packing, and avoid unsmooth valve stem movement.
Disclosure of Invention
The utility model aims to provide an lengthened upper valve cover structure which is simple in structure, and can effectively reduce the adverse effect of high-temperature or low-temperature fluid on filling and avoid the problem of unsmooth movement of a valve rod at low temperature. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an elongated upper valve cover structure, which comprises an upper valve cover fixedly connected to the top of a valve body, and further comprises:
the valve cover accommodating cavity is formed in the upper valve cover;
a valve plug slidably coupled within the valve body;
the valve rod, one end of the valve rod penetrates through the upper valve cover and the valve cover cavity, the valve cover cavity is arranged along the axial direction of the valve rod, one end of the valve rod is fixedly connected with the valve plug, and the other end of the valve rod is fixedly connected with an executing mechanism;
the valve body cavity is formed between the valve plug and the upper valve cover, and the valve body cavity and the valve cover accommodating cavity are relatively sealed;
and the packing is arranged at the joint of the valve rod and the top end of the upper valve cover.
Preferably, the method further comprises:
the packing gland is sleeved on the valve rod, the packing gland is in threaded connection with the top end of the valve cover, and the packing is sealed with the valve rod through the packing gland and the upper valve cover.
Preferably, the method further comprises:
the valve rod is provided with a limiting gap, the connecting part of the bottom of the valve rod and the upper valve cover is provided with the limiting gap, a metal ring is coaxially arranged in the limiting gap, and the metal ring is sleeved on the outer side of the valve rod.
Preferably, the upper valve caps are provided with a plurality of groups, adjacent upper valve caps are fixed through bolts, and the valve rod penetrates through the plurality of upper valve caps.
Preferably, the method further comprises:
and the metal sealing ring is arranged between the adjacent upper valve covers.
Preferably, a plurality of upper valve caps positioned in the middle part are in clearance fit with the valve rod.
In the technical scheme provided by the utility model, the lengthened valve cover is arranged to increase the contact area and the heat transfer area between the surface of the upper valve cover and the atmosphere, and the temperature of the medium in the valve body is reduced along with the increase of the height of the lengthened valve cover and in the direction away from the valve body; a temperature gradient is formed. The valve body inner cavity and the valve cover containing cavity are arranged in a relatively sealed mode, and medium conduction and temperature transmission are reduced. At high temperature, after the temperature of the valve cover cavity is decreased, the temperature of the filler is not higher than a specified temperature range, and meanwhile, the heat does not influence the work of the actuating mechanism; at low temperature, the valve cover cavity ensures that the convection temperature of low-temperature fluid ensures that the valve rod and the filler are at normal temperature which is higher than 0 ℃, does not generate icing or freezing, and ensures the normal action of the valve rod. Overall, this application simple structure can effectively reduce high temperature or low temperature fluid to the adverse effect of packing, avoids the valve rod not smooth problem of motion under low temperature.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an upper valve cover of the present utility model.
1-valve body in the figure; 2-a valve stem; 3-an upper valve cover; 4-packing; 5-packing gland; 6-valve cover cavity; 7-a flow restricting gap; 8-a valve body inner cavity; 9-valve plug.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
Referring to fig. 1, an embodiment of the present utility model provides an elongated upper bonnet structure including an upper bonnet 3 fixedly coupled to a top of a valve body 1, and further including:
the valve cover containing cavity 6 is arranged in the upper valve cover 3;
a valve plug 9, the valve plug 9 being slidingly connected within the valve body 1;
the valve rod 2, one end of the valve rod 2 penetrates through the upper valve cover 3 and the valve cover cavity 6, the valve cover cavity 6 is arranged along the axial direction of the valve rod 2, one end of the valve rod 2 is fixedly connected with the valve plug 9, and the other end of the valve rod 2 is fixedly connected with the executing mechanism;
the valve body cavity 8, the valve plug 9 and the upper valve cover 3 form a valve body cavity 8, and the valve body cavity 8 and the valve cover cavity 6 are relatively sealed;
and the packing 4 is arranged at the joint of the valve rod 2 and the top end of the upper valve cover 3.
The main function of the lengthened valve cover is to increase the contact area between the surface of the upper valve cover 3 and the atmosphere and the heat transfer area, and the temperature of the medium in the valve body 1 is reduced along with the increase of the height of the lengthened valve cover and in the direction away from the valve body 1, so that a temperature gradient is formed; the valve body cavity 8 and the valve cover cavity 6 are arranged in a relatively sealed manner, so that medium conduction and temperature transmission are reduced; at high temperature, after the temperature of the valve cover cavity 6 is decreased, the temperature of the filler 4 is increased and does not exceed a specified temperature range, and meanwhile, the heat does not influence the work of an actuating mechanism; at low temperature, the valve cover cavity 6 ensures that the convection temperature of low-temperature fluid ensures that the valve rod 2 and the filler 4 are at normal temperature which is higher than 0 ℃, does not generate icing or freezing, and ensures the normal action of the valve rod. Overall, this application simple structure can effectively reduce high temperature or low temperature fluid to the adverse effect of packing 4, avoids valve rod 2 not smooth problem of motion under the low temperature.
Further optimizing scheme, still include:
the packing gland 5 is sleeved on the valve rod 2, the packing gland 5 is in threaded connection with the top end of the valve cover 3, and the packing 4 is sealed with the valve rod 2 through the packing gland 5 and the upper valve cover 3.
The main purpose of the packing gland 5 is to limit the packing 4 to the junction of the valve stem 2 and the top end of the upper valve cap 3, and to some extent to protect the packing 4.
Further optimizing scheme, still include:
the bottom connection of the valve rod 2 and the upper valve cover 3 is provided with a flow limiting gap 7, a metal ring (not shown in the figure) is coaxially arranged in the flow limiting gap 7, the metal ring is sleeved outside the valve rod 2, and fluid convection between the valve body inner cavity 8 and the valve cover containing cavity 6 is limited by the metal ring.
The metal ring controls the flow limiting gap 7, so that the valve cover containing cavity 6 forms a relatively independent cavity, and fluid convection between the valve body inner cavity 8 and the valve cover containing cavity 6 is reduced, thereby reducing upward transfer of fluid temperature, especially when the temperature is low, hot fluid in the valve cover containing cavity 6 flows upwards to form a heat insulation layer, and the temperature requirement can be further realized.
Further optimizing scheme, the upper valve caps 3 are provided with a plurality of groups, the adjacent upper valve caps 3 are fixed through bolts, and the valve rod 2 penetrates through the plurality of upper valve caps 3.
The gradient temperature can be controlled more effectively and accurately by arranging the plurality of upper valve covers 3.
Further optimizing scheme, still include:
the metal sealing ring is arranged between the adjacent upper valve covers 3. Thereby ensuring sealability between the upper valve covers 3.
Further optimizing scheme, a plurality of upper valve caps 3 positioned in the middle are in clearance fit with the valve rod 2.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (6)
1. The lengthened upper valve cover structure comprises an upper valve cover (3) fixedly connected to the top of the valve body (1), and is characterized by further comprising:
the valve cover containing cavity (6), the valve cover containing cavity (6) is arranged in the upper valve cover (3);
a valve plug (9), the valve plug (9) being slidingly connected within the valve body (1);
the valve rod (2), one end of the valve rod (2) penetrates through the upper valve cover (3) and the valve cover containing cavity (6), the valve cover containing cavity (6) is arranged along the axis direction of the valve rod (2), one end of the valve rod (2) is fixedly connected with the valve plug (9), and the other end of the valve rod (2) is fixedly connected with an executing mechanism;
the valve body inner cavity (8), the valve plug (9) and the upper valve cover (3) form the valve body inner cavity (8), and the valve body inner cavity (8) and the valve cover containing cavity (6) are relatively sealed;
and the packing (4) is arranged at the joint of the valve rod (2) and the top end of the upper valve cover (3).
2. The elongated upper valve cover structure according to claim 1, further comprising:
the packing gland (5), packing gland (5) cover is established on valve rod (2), packing gland (5) with the top threaded connection of valve gap (3), packing (4) pass through packing gland (5), upper valve gap (3) with valve rod (2) seal.
3. The elongated upper valve cover structure according to claim 1, further comprising:
the valve rod is characterized in that a flow limiting gap (7) is formed in the joint of the valve rod (2) and the bottom of the upper valve cover (3), a metal ring is coaxially arranged in the flow limiting gap (7), and the metal ring is sleeved on the outer side of the valve rod (2).
4. The elongated upper valve cover structure according to claim 1, wherein: the upper valve covers (3) are provided with a plurality of groups, adjacent upper valve covers (3) are fixed through bolts, and the valve rod (2) penetrates through the plurality of upper valve covers (3).
5. The elongated upper valve cover structure according to claim 4, further comprising:
the metal sealing ring is arranged between the adjacent upper valve covers (3).
6. The elongated upper valve cover structure according to claim 4, wherein: and a plurality of upper valve caps (3) positioned in the middle part are in clearance fit with the valve rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321788666.9U CN220646931U (en) | 2023-07-07 | 2023-07-07 | Lengthened upper valve cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321788666.9U CN220646931U (en) | 2023-07-07 | 2023-07-07 | Lengthened upper valve cover structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220646931U true CN220646931U (en) | 2024-03-22 |
Family
ID=90285432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321788666.9U Active CN220646931U (en) | 2023-07-07 | 2023-07-07 | Lengthened upper valve cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220646931U (en) |
-
2023
- 2023-07-07 CN CN202321788666.9U patent/CN220646931U/en active Active
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| GR01 | Patent grant |