Low-temperature aluminum angle valve

Abstract

The utility model discloses a low-temperature aluminum angle valve which comprises a valve body, an annular heat preservation barrel connected to the valve body, the upper end of the valve body is arranged at the bottom of the heat preservation barrel, an input channel and an output pipe are arranged on the valve body, the output pipe is transversely welded to the valve body and communicated with the input channel, and the low-temperature aluminum angle valve further comprises a valve element assembly. One end of the valve element assembly enters the heat preservation barrel and is detachably installed at the upper end of the valve body, the valve element assembly comprises an upper valve deck, a lower valve deck, a valve rod and a valve element, the valve element is installed at the lower end of the valve rod, the upper valve deck is detachably connected to the lower end of the lower valve deck, the lower valve deck is detachably connected to the upper end of the valve body, and the valve rod penetrates through the upper valve deck and the lower valve deck and then is inserted into the valve body. A valve element at the end of the valve rod is close to or blocks an outlet of the input channel, sealing filler is arranged between the upper valve cover and the valve rod, a corrugated pipe is arranged between the lower valve cover and the valve rod, and a floating sleeve is arranged on the peripheral wall of the lower valve cover and covers an upper opening of the heat preservation barrel in a sealing mode. Therefore, the technical effects of good sealing performance and convenience in maintenance are achieved.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a low-temperature aluminum angle valve. Background Art

[0002] When valves are used to transmit cryogenic and cryogenic media such as liquid nitrogen and liquid oxygen, the valves and pipelines need to be deeply buried in cold-insulating materials such as quartz sand. The cold-insulating materials such as quartz sand need to be placed in a tower. Existing valves are mainly connected between pipelines. Therefore, during maintenance, it is necessary to dig pits with cold-insulating materials such as quartz sand to the valve position, which is very time-consuming and labor-intensive, and greatly affects the work efficiency. At the same time, cryogenic and cryogenic media are basically stored under high pressure, which brings huge pressure to the sealing of the valve and is prone to leakage. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a low-temperature aluminum angle valve with good sealing performance and convenient maintenance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature aluminum angle valve, comprising a valve body, an annular heat preservation barrel is connected to the valve body, the upper end of the valve body is placed at the bottom of the heat preservation barrel, the valve body is provided with a vertically arranged input channel and an output pipe, the output pipe is horizontally welded to the valve body and communicates with the input channel, and also comprises a valve core assembly, one end of the valve core assembly enters the heat preservation barrel and is detachably installed on the upper end of the valve body, the valve core assembly comprises an upper valve cover, a lower valve cover, a valve stem and a valve core, the valve core is installed on the lower end of the valve stem, the upper valve cover is detachably connected to the lower end of the lower valve cover, the lower valve cover is detachably connected to the upper end of the valve body, the valve stem is inserted into the valve body after passing through the upper valve cover and the lower valve cover, the valve core at the end of the valve stem approaches or blocks the outlet of the input channel, a sealing filler is provided between the upper valve cover and the valve stem, a bellows is provided between the lower valve cover and the valve stem, a floating sleeve is provided on the peripheral wall of the lower valve cover, and the floating sleeve covers the upper opening of the heat preservation barrel.

[0005] The lower part of the heat preservation barrel is configured to be conical.

[0006] A first flange is provided on the valve body, a second flange is provided at the lower end of the lower valve cover, the first flange and the second flange are connected by bolts and nuts, a third flange is provided at the upper end of the lower valve cover, a fourth flange is provided at the lower end of the upper valve cover, and the third flange and the fourth flange are connected by bolts and nuts.

[0007] The beneficial effects of the utility model are as follows: when the valve body is inspected and maintained, the floating sleeve can be opened and inserted into the insulation barrel, so that the valve core assembly and the valve body can be conveniently disassembled and separated for inspection and maintenance, without digging holes in the cold insulation material. At the same time, the sealing filler and the bellows can achieve double sealing isolation for the medium, greatly reducing the risk of medium leakage, thus achieving the technical effects of good sealing and easy maintenance.

[0008] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of a specific implementation method of the utility model. DETAILED DESCRIPTION

[0010] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.

[0011] like Figure 1 As shown, the present embodiment discloses a low-temperature aluminum angle valve, comprising an aluminum valve body 1, to which an annular heat preservation barrel 4 is connected, the upper end of the valve body 1 is placed at the bottom of the heat preservation barrel 4, and a vertically arranged input channel 11 and an output pipe 12 are arranged on the valve body 1, the output pipe 12 is horizontally welded on the valve body 1 and communicates with the input channel 11, and further comprises a valve core assembly 2, one end of the valve core assembly 2 enters the heat preservation barrel 4 and is detachably mounted on the upper end of the valve body 1, the valve core assembly 2 comprises an upper valve cover 21, a lower valve cover 22, a valve stem 23 and a valve core 24, the valve core 24 is mounted on the lower end of the valve stem 23, the upper valve cover 21 is detachably connected to the lower end of the lower valve cover 22, and the lower valve cover 23 is detachably mounted on the valve stem 23. The valve cover 22 is detachably connected to the upper end of the valve body 1, and the valve stem 23 is inserted into the valve body 1 after passing through the upper valve cover 21 and the lower valve cover 22. The valve core 24 at the end of the valve stem 23 is close to or blocks the outlet of the input channel 11. A sealing packing 25 is arranged between the upper valve cover 21 and the valve stem 23, and a bellows 26 is arranged between the lower valve cover 22 and the valve stem 23. The length of the bellows 26 is approximately 2 / 3 of the length of the lower valve cover 22. A floating sleeve 3 made of soft material is arranged on the peripheral wall of the lower valve cover 22. The floating sleeve 3 covers the upper opening of the insulation barrel 4, wherein the lower part of the insulation barrel 4 is arranged to be conical, so that its structure is more optimized and it is more convenient to install the valve.

[0012] The valve body 1 is provided with a first flange 5, the lower end of the lower valve cover 22 is provided with a second flange 6, a spiral wound gasket is provided between the first flange 5 and the second flange 6 and connected by bolts and nuts, the upper end of the lower valve cover 22 is provided with a third flange 7, the lower end of the upper valve cover 21 is provided with a fourth flange 8, a bellows 26 and a spiral wound gasket are provided between the third flange 7 and the fourth flange 8 and connected by bolts and nuts. Such a detachable connection not only improves the sealing and firmness between the connection parts, but also facilitates installation.

[0013] By adopting the above technical scheme, when inspecting and maintaining the valve body 1, the worker can open the floating sleeve 3 and reach into the insulation barrel 4, and the valve core assembly 2 can be easily disassembled and separated from the valve body 1 for inspection and maintenance, without having to dig holes in the cold insulation material for inspection and maintenance, which greatly reduces the labor intensity of the workers. At the same time, the sealing packing 25 and the bellows 26 can achieve double sealing isolation for the medium, greatly reducing the risk of medium leakage, thus achieving the technical effect of good sealing and easy maintenance.

[0014] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0015] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A low temperature aluminum angle valve, comprising a valve body, characterized in that: An annular heat-insulating barrel is connected to the valve body, and the upper end of the valve body is placed at the bottom of the heat-insulating barrel. The valve body is provided with a vertically arranged input channel and an output pipe, and the output pipe is horizontally welded to the valve body and communicated with the input channel. It also includes a valve core assembly, one end of the valve core assembly enters the heat-insulating barrel and can be detachably installed on the upper end of the valve body. The valve core assembly includes an upper valve cover, a lower valve cover, a valve stem and a valve core. The valve core is installed on the lower end of the valve stem. The upper valve cover is detachably connected to the lower end of the lower valve cover, and the lower valve cover is detachably connected to the upper end of the valve body. The valve stem is inserted into the valve body after passing through the upper valve cover and the lower valve cover, and the valve core at the end of the valve stem approaches or blocks the outlet of the input channel, a sealing filler is provided between the upper valve cover and the valve stem, a bellows is provided between the lower valve cover and the valve stem, and a floating sleeve is provided on the peripheral wall of the lower valve cover, and the floating sleeve covers the upper opening of the heat-insulating barrel.

2. The low temperature aluminum angle valve according to claim 1 is characterized in that: The lower part of the heat preservation barrel is configured to be conical.

3. The low temperature aluminum angle valve according to claim 1 is characterized in that: A first flange is provided on the valve body, a second flange is provided at the lower end of the lower valve cover, the first flange and the second flange are connected by bolts and nuts, a third flange is provided at the upper end of the lower valve cover, a fourth flange is provided at the lower end of the upper valve cover, and the third flange and the fourth flange are connected by bolts and nuts.

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