A support and fixing structure for a low-temperature pressure regulating valve assembly

Abstract

This utility model provides a low-temperature resistant pressure regulating valve assembly support and fixing structure, relating to the field of pressure regulating valve installation technology. It includes a first pipe, a second pipe, and a pressure regulating valve body, as well as a fastening assembly. The fastening assembly includes a flange fixedly connected to the first pipe and the outside of the pressure regulating valve body. A protrusion is fixedly connected to the outside of the flange, and a receiving groove is formed inside the protrusion. A limiting ring is set inside the receiving groove, and an extension ring is fixedly connected to the end of the limiting ring away from the pressure regulating valve body. A negative pressure fixing assembly includes an inner ring fixedly connected to the inside of the first and second pipes, and a cooling fin is fixedly connected to the outside of the inner ring. This design achieves the benefits of automatic displacement compensation through structural linkage during low-temperature contraction, continuously maintaining the tightness of the flange connection, and effectively conducting cold energy, thus avoiding the situation where the pressure regulating valve assembly is affected by excessively high local temperatures at low temperatures.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulating valve installation technology, and in particular to a support and fixing structure for a low-temperature resistant pressure regulating valve assembly. Background Technology

[0002] A cryogenic pressure regulating valve is a device specifically designed for use in cryogenic media pipeline systems to automatically regulate and control pressure. Its core function is to sense changes in inlet or outlet pressure in a cryogenic environment and drive the internal valve disc to actuate, thereby stabilizing the outlet pressure within a set range.

[0003] Traditional pressure regulating valve assemblies are typically installed by directly connecting the components with bolts. During operation, in low-temperature environments, if the temperature inside the pipeline drops and the supporting structure cannot effectively conduct the cold air, the local temperature of the pressure regulating valve assembly may become excessively high, affecting normal operation.

[0004] Therefore, this utility model provides a support and fixing structure for a low-temperature resistant pressure regulating valve group. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a support and fixing structure for a low-temperature pressure regulating valve assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-temperature resistant pressure regulating valve assembly support and fixing structure, including a first pipe, a second pipe and a pressure regulating valve body, and a fastening assembly, wherein the fastening assembly includes a flange fixedly connected to the first pipe and the outside of the pressure regulating valve body, a protrusion fixedly connected to the outside of the flange, a receiving groove being provided inside the protrusion, a limiting protrusion being provided inside the receiving groove, and an extension ring being fixedly connected to the end of the limiting protrusion away from the pressure regulating valve body;

[0007] A negative pressure fixing assembly includes an inner ring fixedly connected inside a first pipe and a second pipe, and a cooling fin fixedly connected to the outer side of the inner ring.

[0008] In a preferred embodiment, the flange is internally threaded with bolts, and the limiting ring is internally provided with a limiting gasket.

[0009] In a preferred embodiment, the end of the cooling plate furthest from the inner ring is in contact with the extension ring.

[0010] In a preferred embodiment, the inner side of the inner ring is slidably connected to the flange of the second pipe and the pressure regulating valve body.

[0011] In a preferred embodiment, the first pipe and the second pipe are connected to the pressure regulating valve body via flanges.

[0012] In a preferred embodiment, the second pipe is connected to the flange on the outside of the pressure regulating valve body by bolts.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] This invention utilizes the principle that when the pipeline and pressure regulating valve body shrink and contract in a low-temperature environment, the inner ring moves axially with the pipeline, causing the cooling guide plate to move synchronously. The cooling guide plate pushes the extension ring to move towards the pressure regulating valve body. The extension ring causes the limiting convex ring to be squeezed, deformed, or displaced in the convex receiving groove, thereby causing the limiting gasket to press the connection surfaces of the two sets of flanges, enhancing or maintaining the tightening force of the connecting bolts. This design achieves the benefits of automatically compensating for displacement through structural linkage during low-temperature shrinkage, continuously maintaining the tightness of the flange connection, and effectively transferring cold energy. It also avoids the situation where the pressure regulating valve assembly is affected by excessively high local temperatures at low temperatures, thus preventing it from affecting normal operation. Attached Figure Description

[0015] Figure 1 A perspective view of a low-temperature resistant pressure regulating valve assembly support and fixing structure provided by this utility model;

[0016] Figure 2 A schematic diagram of the second pipeline structure for a low-temperature resistant pressure regulating valve assembly support and fixing structure provided by this utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0018] Figure 4 A schematic diagram of a fastening component structure for a low-temperature resistant pressure regulating valve assembly support and fixing structure provided by this utility model;

[0019] Figure 5 A schematic diagram of a limiting gasket structure for a low-temperature resistant pressure regulating valve assembly support and fixing structure provided by this utility model.

[0020] Legend:

[0021] 1. First pipeline; 2. Second pipeline; 3. Pressure regulating valve body;

[0022] 4. Fastening components; 41. Flange; 42. Protrusion; 43. Receiving groove; 44. Limiting ring; 45. Extension ring;

[0023] 5. Negative pressure fixing component; 51. Inner ring; 52. Cooling plate; 53. Bolt; 54. Limiting gasket. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a low-temperature resistant pressure regulating valve assembly support and fixing structure, including a first pipe 1, a second pipe 2, and a pressure regulating valve body 3, characterized in that it further includes a fastening assembly 4, the fastening assembly 4 including a flange 41 fixedly connected to the outside of the first pipe 1 and the pressure regulating valve body 3, a protrusion 42 fixedly connected to the outside of the flange 41, a receiving groove 43 opened inside the protrusion 42, a limiting protrusion 44 provided inside the receiving groove 43, an extension ring 45 fixedly connected to the end of the limiting protrusion 44 away from the pressure regulating valve body 3, the first pipe 1 and the second pipe 2 are connected to the pressure regulating valve body 3 through the flange 41, and the second pipe 2 is connected to the flange 41 outside the pressure regulating valve body 3 through bolts 53;

[0026] Flange 41 is used to connect the first pipe 1, the second pipe 2, and the pressure regulating valve body 3, providing a standardized interface for the connection between the pipes and the pressure regulating valve body 3. Through the bolt holes 53 and other structures on flange 41, fasteners such as bolts 53 can be easily used to tightly connect the various components together, ensuring the sealing and stability of the pipeline system during operation. The protrusion 42 is located on the outside of flange 41, and its internal receiving groove 43 provides installation space for subsequent components such as the limiting protrusion 44. The receiving groove 43 is the space for placing the limiting protrusion 44, restricting its position and ensuring it can be positioned appropriately. The position plays a role, and the shape and size of the receiving groove 43 also affect the installation and fixing method of the limiting protrusion 44. The main function of the limiting protrusion 44 is to limit the extension ring 45 and prevent the extension ring 45 from shifting or shaking during use. The connection method with the extension ring 45 can ensure that the extension ring 45 is stably fixed on the protrusion 42. One end of the extension ring 45 is connected to the limiting protrusion 44, and the other end is in contact with the cooling plate 52 in the negative pressure fixing component 5. It plays a key role in connecting the fastening component 4 and the negative pressure fixing component, organically combining the two to form a whole structure.

[0027] like Figure 4 - Figure 5As shown, the negative pressure fixing assembly 5 includes an inner ring 51 fixedly connected inside the first pipe 1 and the second pipe 2. A cooling plate 52 is fixedly connected to the outer side of the inner ring 51. The end of the cooling plate 52 away from the inner ring 51 is in contact with the extension ring 45. The inner side of the inner ring 51 is slidably connected to the flange 41 of the second pipe 2 and the pressure regulating valve body 3. A bolt 53 is threaded inside the flange 41. A limit gasket 54 is provided inside the limiting ring 44.

[0028] The inner ring 51 is fixedly connected inside the first pipe 1 and the second pipe 2, providing an installation base for the cooling plate 52. At the same time, the inner side of the inner ring 51 is slidably connected to the flange 41 of the second pipe 2 and the pressure regulating valve body 3. This sliding connection allows for adjustment of the position of the inner ring 51 to a certain extent to adapt to the installation and operation requirements of the pipeline system. One end of the cooling plate 52 is fixedly connected to the inner ring 51, and the other end is in contact with the extension ring 45. The main function of the cooling plate 52 is to conduct cold energy, which can transfer the cold energy inside the pipe to the extension ring 45, thereby playing a certain cooling role for the entire structure. The effect of cold contraction is transferred through the extension ring 45 and the limiting convex ring 44 to the bolt 53, which is mainly used to connect the flange 41. Between the flange 41 on the outside of the second pipe 2 and the pressure regulating valve body 3, the two are tightly connected together by the bolt 53 to ensure the sealing and connection strength between the pipe and the pressure regulating valve body 3. The limiting gasket 54 connects the two sets of flanges 41 together through the contraction of the limiting convex ring 44.

[0029] Working principle:

[0030] like Figure 1 - Figure 5 As shown:

[0031] In use: First, when the ambient temperature decreases, causing the first pipe 1, the second pipe 2, and the pressure regulating valve body 3 to contract, the inner ring 51, which is fixedly connected inside the pipe, will axially contract and displace along with the pipe. This, in turn, will cause the cooling guide plate 52, which is fixedly connected to the outside of the inner ring 51, to move synchronously. The end of the cooling guide plate 52 away from the inner ring 51 will contact the extension ring 45. Therefore, the displacement of the cooling guide plate 52 will cause the extension ring 45 to move towards the pressure regulating valve body 3. The extension ring 45 is fixedly connected to the limiting protrusion 44. The movement of the extension ring 45 will cause the limiting protrusion 44 to move towards the protrusion 45. 2. When the inner receiving groove 43 is squeezed and deformed or displaced, the squeezed limiting ring 44 then drives the limiting gasket 54 inside it to press between the connecting surfaces of the two sets of flanges 41. At the same time, the bolts 53 used to connect the flanges 41 are tightened or effectively maintained by the limiting gasket 54. Thus, during the low temperature shrinkage process, the entire structure compensates for part of the displacement through the sliding connection of the inner ring 51, and through the linkage of the cooling plate 52-extension ring 45-limiting ring 44, it is finally converted into a continuous clamping force on the connection between the limiting gasket 54 and the bolt 53.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A low-temperature-resistant pressure regulating valve group supporting and fixing structure, comprising a first pipe (1), a second pipe (2) and a pressure regulating valve body (3), characterized in that, It also includes a fastening assembly (4), which includes a flange (41) fixedly connected to the outside of the first pipe (1) and the pressure regulating valve body (3). A protrusion (42) is fixedly connected to the outside of the flange (41). A receiving groove (43) is provided inside the protrusion (42). A limiting ring (44) is provided inside the receiving groove (43). An extension ring (45) is fixedly connected to the end of the limiting ring (44) away from the pressure regulating valve body (3). The negative pressure fixing component (5) includes an inner ring (51) fixedly connected inside the first pipe (1) and the second pipe (2), and a cooling plate (52) is fixedly connected to the outside of the inner ring (51).

2. The low-temperature resistant pressure regulating valve assembly support and fixing structure according to claim 1, characterized in that: The flange (41) is internally threaded with bolts (53), and the limiting ring (44) is internally provided with a limiting gasket (54).

3. The low-temperature-resistant pressure-regulating valve group supporting and fixing structure according to claim 1, characterized in that: The end of the cooling plate (52) away from the inner ring (51) is in contact with the extension ring (45).

4. The low-temperature-resistant pressure-regulating valve group supporting and fixing structure according to claim 1, characterized in that: The inner side of the inner ring (51) is slidably connected to the flange (41) of the second pipe (2) and the pressure regulating valve body (3).

5. The low-temperature-resistant pressure-regulating valve group supporting and fixing structure according to claim 1, characterized in that: The first pipe (1) and the second pipe (2) are connected to the pressure regulating valve body (3) through a flange (41).

6. The low-temperature-resistant pressure-regulating valve group supporting and fixing structure according to claim 1, characterized in that: The second pipe (2) is connected to the flange (41) on the outside of the pressure regulating valve body (3) by bolts (53).

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