CN218348006U - Floating sleeve for low-temperature device and low-temperature device - Google Patents

Abstract

The utility model provides a floating sleeve for a low temperature device and the low temperature device, the floating sleeve for the low temperature device comprises a first port which is sleeved on a low temperature regulating valve; the second port is connected with the box plate hole; and the floating sleeve main body is positioned between the first port and the second port, and the floating sleeve main body is formed into a wave shape along the axial direction of the floating sleeve main body. The floating sleeve for the low-temperature device and the low-temperature device can solve the problem that the existing floating sleeve limits the movement of the valve in all directions.

Description

Floating sleeve for low-temperature device and low-temperature device

Technical Field

The application relates to the technical field of cryogenic air separation, in particular to a floating sleeve for a low-temperature device and the low-temperature device.

Background

A type of cryogenic regulating valve with an extended valve stem is typically installed in the cold box of an air separation plant or liquefaction plant (i.e., a cryogenic plant). The inlet and outlet of the low-temperature regulating valve are respectively connected with pipeline, and its valve body is completely placed in the interior of cold-insulating box filled with pearly-lustre sand heat-insulating material. The actuating mechanism (commonly called membrane head) of the low-temperature regulating valve is connected with the valve body through a valve rod extending rod penetrating through a box plate hole of the cold insulation box to form the low-temperature regulating valve. The floating sleeve is arranged near the plate hole of the cold insulation box and used for preventing pearlife in the cold insulation box from leaking, and the floating sleeve is usually made of common rubber and is formed by pressing through a grinding tool.

However, during the use process of the low-temperature device, the existing floating sleeve has a solidified shape, so that the displacement elasticity of the floating sleeve is poor, and the movement of the valve is indirectly limited. There is a need for a new floating sleeve to solve the problem of the existing floating sleeve limiting the movement of the valve in all directions.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a floating sleeve for a cryogenic device and a cryogenic device, so as to solve the problem that the conventional floating sleeve restricts the movement of a valve in all directions.

According to the utility model discloses a first aspect provides a cover that floats that low temperature device was used, wherein, the cover that floats that low temperature device was used includes: the first port is sleeved on the low-temperature regulating valve; the second port is connected with the box plate hole; and the floating sleeve main body is positioned between the first port and the second port, and the floating sleeve main body is formed into a wave shape along the axial direction of the floating sleeve main body.

Preferably, the diameter of the first port is smaller than the diameter of the second port.

Preferably, the diameter of the floating sleeve body tapers from the second port to the first port.

Preferably, the diameter of the floating sleeve body is stepped.

Preferably, the low-temperature regulating valve is provided with a valve rod disc, and the first port is sleeved on the valve rod disc.

Preferably, the first port is secured to the stem disc by a first clip.

Preferably, an extension pipe extends out of a hole of a box plate of the cold insulation box, the outer diameter of the extension pipe is equal to the hole diameter of the box plate hole, and the second port is sleeved on the extension pipe.

Preferably, the second port is secured to the extension pipe by a second clamp.

Preferably, the floating sleeve main body is made of a silicon rubber material.

According to the utility model discloses a second aspect provides a low temperature equipment, wherein, low temperature equipment includes cold insulation box, low temperature regulating valve and as above the floating cover that low temperature equipment used, low temperature regulating valve passes through the boxboard hole is worn to locate the cold insulation box, the floating cover that low temperature equipment used is connected the boxboard hole and low temperature regulating valve.

The utility model discloses a cover and low temperature equipment float that low temperature equipment used, its low temperature equipment include cold insulation box and low temperature regulating valve, and the cold insulation box is worn to locate by low temperature regulating valve through the boxboard hole, and the first port of the cover that floats that low temperature equipment used then the cover locate low temperature regulating valve, the second port of the cover that floats that low temperature equipment used with the boxboard is connected, and the cover main part that floats that is located between first port and the second port forms into annular wave along the axis direction, and wavy structure makes the cover main part that floats can stretch and crooked to a certain extent, so can solve current cover that floats effectively and restrict the problem of the removal of valve in all directions.

In order to make the aforementioned objects, features and advantages of the present application comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic view of a floating sleeve for a cryogenic device and portions of a cryogenic device according to the present invention.

Fig. 2 is a cross-sectional view of a floating sleeve for a cryogenic device according to the present invention.

Reference numerals are as follows: 1-a first port; 2-a second port; 3-a floating sleeve body; 31-a convex portion; 32-a recess; 33-a neck portion; 4-a cold insulation box; 41-box plate holes; 42-an extension tube; 5-low temperature regulating valve; 51-a stem disc; 52-valve stem extension rod; 61-a first clamp; 62-a second clip.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art in view of the disclosure of the present application. For example, the order of operations described herein is merely an example, which is not limited to the order set forth herein, but rather, variations may be made in addition to operations which must occur in a particular order, which will be apparent upon understanding the disclosure of the present application. Moreover, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after understanding the disclosure of the present application.

Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on," "connected to," coupled to, "over," or "overlying" another element, it may be directly "on," "connected to," coupled to, "over," or "overlying" the other element, or one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," directly coupled to, "directly over" or "directly overlying" another element, there may be no intervening elements present.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.

Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in the examples described herein could be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatial relationship terms such as "above 8230 \8230; above", "upper", "above 8230 \8230; below" and "lower" may be used herein to describe the relationship of one element to another element as shown in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be oriented "below" or "lower" relative to the other elements. Thus, the term "over" \\8230; \8230; "includes both orientations" over "\8230; \8230and" under "\8230;" depending on the spatial orientation of the device. The device may also be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.

Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

As shown in fig. 1 and 2, according to a first aspect of the present invention, there is provided a floating sleeve for a cryogenic device, comprising a first port 1, a second port 2, and a floating sleeve body 3.

In the following description, a specific structure of the above-described components of the floating sleeve for a cryogenic device and a connection relationship of the above-described components will be specifically described with reference to fig. 1 and 2.

As shown in fig. 1 and 2, in the embodiment, the cryogenic device (e.g., air separation device or liquefaction device) includes a cold insulation box 4 and a cryogenic regulating valve 5, wherein the cryogenic regulating valve 5 is inserted into the cold insulation box 4 through a box plate hole 41. The low temperature adjusting valve 5 may include a valve body (not shown), a valve rod extension rod 52 and a membrane head (not shown), wherein the valve body may be located inside the cold insulation box 4, and the valve rod extension rod 52 may penetrate through the cold insulation box 4 through a box plate hole 41, so that the valve body may be connected to the membrane head located outside the cold insulation box 4 through the valve rod extension rod 52 (the valve body may be located on the left side in fig. 1, and the membrane head may be located on the right side in fig. 1). The cold insulation box 4 is filled with pearlife for isolating temperature, and the diameter of the valve rod extension rod 52 is smaller than that of the box plate hole 41, so that the floating sleeve for the low-temperature device is arranged between the box plate hole 41 and the low-temperature adjusting valve 5 to play a role in sealing in order to avoid leakage of the pearlife.

Specifically, as shown in fig. 1 and 2, in the embodiment, the first port 1 of the floating sleeve for the cryogenic device is sleeved on the cryogenic regulating valve 5, the second port 2 of the floating sleeve for the cryogenic device is connected with the tank plate hole 41, and the floating sleeve body 3 is located between the first port 1 and the second port 2. In this way, the floating sleeve for the low temperature device can indirectly seal the box plate hole 41, and prevent the pearl sand from flowing into the outside, and the floating sleeve main body 3 is formed into a wave shape along the axial direction, so that it can be extended and contracted along the axial direction and swung along the radial direction to a certain extent, so as to prevent the floating sleeve for the low temperature device from restricting the movement of the low temperature adjusting valve 5. Here, the axial direction is also the extending direction of the stem extension rod 52.

Further, as shown in fig. 1 and 2, in the embodiment, the floating sleeve body 3 is formed with a plurality of alternately arranged convex portions 31 and concave portions 32 along the axial direction, thereby forming a wave shape. The convex portion 31 may be a ring shape protruding in the radial direction, and the concave portion 32 may be a ring shape having a diameter smaller than that of the adjacent convex portion 31, so that the concave portion 32 is formed in a concave shape with respect to the convex portions 31 on both sides thereof, and the convex portion 31 and the concave portion 32 connected one by one are formed in an undulating shape. So set up and to make the cover main part 3 that floats have certain scalable volume in the axial, under the condition that low temperature regulation valve 5 produces the ascending displacement of axial because expend with heat and contract with cold, cover main part 3 that floats can be along with low temperature regulation valve 5 synchronous motion.

Preferably, as shown in fig. 1 and 2, in an embodiment, the first port 1 may be located at a first end in an axial direction of the floating sleeve body 3, and the second port 2 may be located at a second end in the axial direction of the floating sleeve body 3, and the first end and the second end may be opposite ends. Wherein, the diameter of the first port 1 can be smaller than that of the second port 2, and the diameter of the floating sleeve body 3 is gradually reduced from the second port 2 to the first port 1.

Further, preferably, as shown in fig. 1 and 2, in an embodiment, the diameter of the floating sleeve body 3 may be tapered in a stepwise manner. Specifically, on the floating sleeve body 3, a pair of adjacent convex portions 31 and concave portions 32 may be regarded as a set of steps, and in the direction from the second port 2 to the first port 1, the size of each set of steps is gradually reduced, that is, the diameter of each convex portion 31 is gradually reduced in the direction from the second port 2 to the first port 1, and the diameter of each concave portion 32 is also gradually reduced, and the difference in diameter between the adjacent two convex portions 31 may be equal to the difference in diameter between the adjacent two concave portions 32. Further, it is preferable that both side surfaces in the axial direction of the convex portion 31 of the floating sleeve body 3 (or both side surfaces in the axial direction of the concave portion 32) are perpendicular to the central axis of the floating sleeve body 3, so that a regular step is formed, and thus the arrangement can facilitate the swing of the floating sleeve body 3 in the radial direction.

Preferably, as shown in fig. 1 and 2, in an embodiment, the floating sleeve body 3 may have five protrusions 31 protruding in a radial direction and four recesses 32 formed between adjacent two protrusions 31. However, without being limited thereto, during actual use, the number of the convex and concave portions of the floating sleeve body may be adaptively adjusted according to the actually required amount of expansion and contraction, and in the case where a large amount of expansion and contraction is required, the floating sleeve body may increase the number of the convex and concave portions, and in the case where a small amount of expansion and contraction is required, the floating sleeve body may decrease the number of the convex and concave portions. Further, it is preferable that the floating cover body 3 is made of a silicon rubber material, such as vinyl silicon rubber. Compared with common rubber adopted by the floating sleeve in the prior art, the silicon rubber is softer in texture and strong in oxidation resistance, and further the service life of the floating sleeve main body 3 is prolonged.

Preferably, as shown in fig. 1 and 2, in an embodiment, the low temperature regulating valve 5 may be provided with a valve stem disc 51, that is, the valve stem disc 51 is a disc-shaped protrusion formed on a valve stem extension rod 52 and having a diameter larger than that of the valve stem extension rod 52, and the valve stem disc 51 is located outside the cold insulation box 4 and close to the box plate hole 41. The diameter of the first port 1 of the floating sleeve for the cryogenic device may be equal to the diameter of the valve stem disk 51, so that the first port 1 can be tightly sleeved on the outer circumference of the valve stem disk 51.

Specifically, as shown in fig. 1 and fig. 2, in an embodiment, a neck 33 may be formed between the floating sleeve body 3 and the first port 1, that is, the floating sleeve body 3 axially extends in a direction of the first port 1 to form a tubular portion with a certain length, and a port of the tubular portion is the first port 1. When the first port 1 is fitted to the stem disc 51, the first port 1 and the stem disc 51 may be fixed by the first clamp 61. The first band 61 may be sleeved on the neck 33 near the first port 1, and the first port 1 may be tightly fixed to the outer circumference of the stem disc 51 by locking the first band 61.

Furthermore, preferably, as shown in fig. 1 and fig. 2, in the embodiment, the extension tube 42 may protrude from the box plate hole 41 of the heat insulation box 4, and an outer diameter of the extension tube 42 may be equal to a bore diameter of the box plate hole 41, so that the extension tube 42 and the box plate hole 41 can be tightly fitted to each other, thereby preventing the pearl sand from leaking from a gap between the extension tube 42 and the box plate hole 41, and further, the extension tube 42 and the box plate hole 41 may be welded to each other. The diameter of the second port 2 of the floating sleeve for the thermostat may be equal to the outer diameter of the extension pipe 42 so that the second port 2 can be tightly fitted over the extension pipe 42.

Specifically, as shown in fig. 1 and 2, in the embodiment, a neck 33 may also be formed between the floating sleeve body 3 and the second port 2, that is, the floating sleeve body 3 axially extends to a certain length in the direction of the second port 2 to form a tubular portion, and the end of the tubular portion is the second port 2. In a case where the second port 2 is fitted to the extension pipe 42, the second port 2 and the extension pipe 42 may be fixed by a second clamp 62. The second clip 62 can be fitted over the neck 33 near the second port 2, and the second port 2 can be tightly fixed to the outer circumference of the extension pipe 42 by tightening the second clip 62.

Furthermore, according to a second aspect of the present invention, there is provided a low temperature device, which includes a cold insulation box, a low temperature regulating valve and a floating sleeve for the low temperature device as described above, wherein the cold insulation box may be the cold insulation box 4 in the above-mentioned embodiment, and the low temperature regulating valve may be the low temperature regulating valve 5 in the above-mentioned embodiment.

In the use, cold insulation box 4 is worn to locate through case plate hole 41 by low temperature regulating valve 5, and the first port 1 of the floating sleeve that the low temperature device used locks in the valve rod disc 51 of low temperature regulating valve 5 through first clamp 61, and second port 2 locks in the extension pipe 42 that links to each other with case plate hole 41 through second clamp 62 to this seals case plate hole 41, avoids the pearlite sand in cold insulation box 4 to leak. The wave-shaped appearance of the floating sleeve body 3 which is gradually reduced can enable the floating sleeve body to stretch and retract along the axis direction and swing along the radial direction to a certain extent, so that the floating sleeve body can move along with the low-temperature regulating valve 5 in all directions.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used to illustrate the technical solutions of the present application, but not to limit the technical solutions, and the scope of the present application is not limited to the above-mentioned embodiments, although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a cover that floats that low temperature equipment used, low temperature equipment includes cold insulation box and low temperature regulating valve, low temperature regulating valve passes through the boxboard hole and wears to locate the cold insulation box, its characterized in that, the cover that floats that low temperature equipment used includes:

the first port is sleeved on the low-temperature regulating valve;

the second port is connected with the box plate hole; and

the floating sleeve body is positioned between the first port and the second port and is formed into a wave shape along the axial direction of the floating sleeve body.

2. The floating sleeve for a cryogenic device of claim 1, wherein the diameter of the first port is smaller than the diameter of the second port.

3. The floating sleeve for a cryogenic device of claim 2, wherein the diameter of the floating sleeve body tapers from the second port to the first port.

4. The floating sleeve for a cryogenic device of claim 3, wherein the diameter of the floating sleeve body is tapered in a stepwise manner.

5. The floating sleeve for a cryogenic device of claim 1, wherein the cryogenic regulator valve is provided with a valve stem disk, and the first port is sleeved on the valve stem disk.

6. The floating sleeve for a cryogenic device of claim 5, wherein the first port is secured to the stem disk by a first clip.

7. The floating sleeve for a cryogenic device according to claim 1, wherein an extension pipe protrudes from the port of the refrigerator plate of the cold box, the outer diameter of the extension pipe is equal to the hole diameter of the port of the refrigerator plate, and the second port is sleeved on the extension pipe.

8. The floating sleeve for a cryogenic device of claim 7, wherein the second port is secured to the extension pipe by a second clamp.

9. The floating cover for a cryogenic device according to any one of claims 1 to 8, wherein the floating cover body is made of a silicon rubber material.

10. A cryogenic device comprising a cold box, a cryogenic regulating valve, and the floating sleeve of any one of claims 1 to 9, wherein the cryogenic regulating valve is inserted into the cold box through the box plate hole, and the floating sleeve of the cryogenic device connects the box plate hole and the cryogenic regulating valve.

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