Novel annular pressure container valve seat structure and annular pressure container

Abstract

The novel annular pressure vessel valve seat structure comprises a valve seat body, a valve body connecting hole is formed in the center of the valve seat body, a circular bead and an inner container limiting protrusion are arranged on the outer wall face of the valve seat body, the circular bead is close to the top of the valve seat body, and the inner container limiting protrusion is arranged on the inner container connecting hole. The inner container limiting protrusion is close to the bottom of the valve seat body, a set distance is arranged between the circular bead and the inner container limiting protrusion, and a plurality of fiber limiting protrusions are arranged on the upper surface of the circular bead. Compared with an existing valve seat structure, the height of the inner ring of the valve seat is reduced, when a fiber layer is wound, the influence of the valve seat on a spindle can be avoided, the problem that fiber winding is difficult is solved, and meanwhile the uniformity of fiber winding is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure vessels, and in particular relates to a novel annular pressure vessel valve seat structure and an annular pressure vessel. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Pressure vessels are mainly used to carry high-pressure gases such as liquefied petroleum gas and nitrogen. A valve seat extends from the barrel to serve as a gas outlet. Usually, the valve seat and the barrel are not made of one piece, and most of them are composed of heterogeneous materials. This places higher requirements on the mechanical strength, fatigue resistance and sealing performance of the container.

[0004] The structure of the annular pressure vessel in the prior art is as follows: Figure 1 As shown, the valve seat 7 is embedded in the inner wall of the annular container 5. Because the inner fiber is thick and under pressure, this characteristic is utilized to make the valve seat structure more tightly connected to the pressure vessel body, increasing its mechanical strength and airtightness. In order to allow the annular container to store as much gas or liquid as possible within a certain space, the diameter of the inner ring is as small as possible. The surface of the annular liner must be evenly wound with fibers. The spindle (with carbon fibers on it) must carry the fibers through the inner ring so that the fibers are attached to the liner. About 10 layers of fibers must be evenly laid on the surface of the liner and wound into a single shape without any breakage in the middle to ensure the pressure bearing capacity of the pressure vessel. This results in the spindle size becoming larger, but the height of the valve seat 7 protruding from the inner wall of the annular container 5 is relatively high, which makes fiber winding difficult. In addition, because the valve seat surface is relatively smooth, the fibers wound on the valve seat are easily displaced, resulting in uneven fiber winding at the connection between the pressure vessel and the valve seat, affecting the mechanical properties of the pressure vessel. Utility Model Content

[0005] The purpose of the utility model is to provide a novel annular pressure vessel valve seat structure and an annular pressure vessel, which solves the problem of fiber winding difficulty and improves the uniformity of fiber winding.

[0006] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the present invention provides a new annular pressure vessel valve seat structure, including a valve seat body, a valve body connecting hole is provided at the center position of the valve seat body, a shoulder and an inner liner limiting protrusion are provided on the outer wall surface of the valve seat body, the shoulder is close to the top of the valve seat body, the inner liner limiting protrusion is close to the bottom of the valve seat body, the shoulder and the inner liner limiting protrusion are separated by a set distance, and a plurality of fiber limiting protrusions are provided on the upper surface of the shoulder.

[0008] As a further technical solution, the upper half of the valve body connecting hole is a threaded hole, and the lower half is provided with a first sealing groove and a second sealing groove, and the first sealing groove and the second sealing groove are separated by a set distance.

[0009] As a further technical solution, a valve body is installed in the threaded hole, a retaining ring is installed in the first sealing groove, and a sealing ring is installed in the second sealing groove.

[0010] As a further technical solution, the distance between the shoulder and the top of the valve seat body is smaller than the distance between the shoulder and the bottom of the valve seat body.

[0011] As a further technical solution, the shoulder adopts a concave structure, and the concave surface of the shoulder is flush with the inner ring surface of the pressure vessel.

[0012] As a further technical solution, a plurality of fiber limiting protrusions are irregularly distributed on the concave surface of the shoulder, and the fibers are wound on the concave surface of the shoulder.

[0013] As a further technical solution, the valve seat body is provided as an embedded part in the inner liner, the inner liner is an annular hollow chamber structure, and the valve seat body is located on the inner ring of the inner liner.

[0014] As a further technical solution, the inner liner limiting protrusion is annular and limits the inner liner.

[0015] As a further technical solution, the fiber limiting protrusion is an elliptical protrusion, and the major axis of the elliptical protrusion is parallel to the winding direction of the fiber.

[0016] In a second aspect, an embodiment of the present invention provides an annular pressure vessel, comprising the valve seat structure described in the first aspect.

[0017] The beneficial effects of the above embodiments of the present invention are as follows:

[0018] The novel annular pressure vessel valve seat structure provided by this utility model improves the valve seat structure by shortening the concave shoulder extension, reducing the inner ring diameter and thereby increasing the storage capacity of the annular container. Simultaneously, the convex shoulder extension is lengthened, increasing the thickness of the inner container at the valve seat installation point, thereby achieving a tighter seal. Compared with existing valve seat structures, this valve seat structure reduces the height of the valve seat within the inner ring, preventing the valve seat from interfering with the spindle during fiber winding, thus resolving the problem of fiber winding difficulties.

[0019] The utility model provides a new annular pressure vessel valve seat structure, in which a plurality of fiber limiting protrusions are arranged on the shoulder. The fiber limiting protrusions limit the entanglement of the fibers, prevent the displacement of the fibers, avoid uneven fiber distribution, and improve the mechanical properties of the connection position between the pressure vessel and the valve seat; at the same time, the fiber limiting protrusions are set as elliptical protrusions, which can minimize the impact of fiber entanglement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a schematic diagram of installing a valve seat on an existing annular pressure vessel;

[0022] Figure 2 This is a structural diagram of the novel annular pressure vessel valve seat structure of the utility model;

[0023] Figure 3 yes Figure 2 Cross-section at AA in the middle;

[0024] Figure 4 This is a schematic diagram of the new annular pressure vessel valve seat structure of the utility model being installed on the pressure vessel;

[0025] Figure 5 yes Figure 4 Cross-section at the middle BB;

[0026] Figure 6 yes Figure 4 A partial enlarged view of point A in the middle;

[0027] Figure 7 This is a schematic diagram of the annular pressure vessel of the present invention when winding fibers.

[0028] The diagram is for illustrative purposes only;

[0029] Among them, 1. valve seat body; 101. threaded hole; 102. first sealing groove; 103. second sealing groove; 2. shoulder; 3. liner limiting protrusion; 4. fiber limiting protrusion; 5. pressure vessel; 501. liner; 502. fiber; 6. valve body; 7. valve seat. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] Example 1

[0032] In a typical embodiment of the present invention, Figure 2 and Figure 3 As shown, a new annular pressure vessel valve seat structure is provided, including a valve seat body 1, a valve body connecting hole is provided at the center position of the valve seat body 1, a shoulder 2 and an inner liner limiting protrusion 3 are provided on the outer wall surface of the valve seat body 1, the shoulder 2 is close to the top of the valve seat body 1, the inner liner limiting protrusion 3 is close to the bottom of the valve seat body 1, the shoulder 2 and the inner liner limiting protrusion 3 are separated by a set distance, and a plurality of fiber limiting protrusions 4 are provided on the upper surface of the shoulder 2.

[0033] In this embodiment, the upper portion of the valve body connection hole is a threaded hole 101, and the lower portion is provided with a first sealing groove 102 and a second sealing groove 103. The first sealing groove 102 and the second sealing groove 103 are separated by a predetermined distance. Furthermore, the valve body 6 is mounted within the threaded hole 101, secured thereto via a threaded connection. A retaining ring is mounted within the first sealing groove 102, and a sealing ring is mounted within the second sealing groove 103. These retaining rings and sealing rings provide a seal, preventing gas leakage in this area.

[0034] In this embodiment, the distance between the shoulder 2 and the top of the valve seat body 1 is smaller than the distance between the shoulder 2 and the bottom of the valve seat body 1. The shoulder 2 adopts a concave structure. The concave surface of the shoulder 2 is flush with the inner ring surface of the pressure vessel 5 to achieve a smooth transition. This design facilitates the winding of the fibers, making the winding layer tight and having excellent mechanical properties. The structure of the valve seat shortens the protruding end of the concave surface (top) of the shoulder, which can reduce the inner ring diameter and thus make the storage volume of the annular container larger. At the same time, the protruding end of the convex surface (bottom) of the shoulder becomes longer, and the thickness of the inner liner at the valve seat installation becomes larger, making the seal tighter. Figure 7 As shown, compared with the existing valve seat structure, the valve seat structure provided in this embodiment reduces the height of the valve seat in the inner circle, which can avoid the influence of the valve seat on the spindle when winding the fiber layer.

[0035] Furthermore, a plurality of fiber limiting protrusions 4 are irregularly distributed on the concave surface of the shoulder 2 , and fibers are wound on the concave surface of the shoulder 2 .

[0036] In this embodiment, if Figure 4-6As shown, the valve seat body 1 is arranged in the inner liner 501 as an embedded part. The inner liner 501 is an annular hollow chamber structure. The valve seat body 1 is located on the inner ring of the inner liner 501. The material of the inner liner is plastic, which has a good effect of isolating air and water and is not prone to chemical reactions. The thickness of the inner liner where the valve seat is installed is larger than that of other places, and the plastic material is recessed into the inner cavity. The molding process of the inner liner is to embed the valve seat 7 in the mold through rotational molding or blow molding.

[0037] The inner liner limiting protrusion 3 is annular and limits the inner liner, mainly to limit the movement of the plastic inner liner, making the connection therein more secure and reliable.

[0038] The fiber limiting protrusion 4 is an elliptical protrusion, the major axis of which is parallel to the winding direction of the fiber. The height of the fiber limiting protrusion 4 is the same as the winding height of the fiber layer. By setting the fiber limiting protrusion 4 as an elliptical protrusion, the impact of fiber winding can be minimized. The fiber limiting protrusion 4 limits the winding of the fiber 502, preventing the fiber from shifting and avoiding uneven fiber distribution. The fiber layer provides mechanical protection against the expansion of high-pressure gas. When the annular container is wound, the thickness of the inner ring of the winding layer is greater than the winding thickness of other parts, and the stress of the inner ring is under compressive stress. Therefore, the valve seat is arranged on the inner side of the ring. The wound fibers exert a pressing force on the valve seat, making the structure at this location have excellent mechanical properties and good airtightness.

[0039] Example 2

[0040] In a typical embodiment of this embodiment, an annular pressure vessel is provided, such as Figure 4-6 As shown, it includes the valve seat structure of embodiment 1.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A new annular pressure vessel valve seat structure, characterized in that: It includes a valve seat body, a valve body connecting hole is provided at the center position of the valve seat body, a shoulder and an inner liner limiting protrusion are provided on the outer wall surface of the valve seat body, the shoulder is close to the top of the valve seat body, the inner liner limiting protrusion is close to the bottom of the valve seat body, the shoulder and the inner liner limiting protrusion are separated by a set distance, and a plurality of fiber limiting protrusions are provided on the upper surface of the shoulder.

2. The novel annular pressure vessel valve seat structure according to claim 1, characterized in that: The upper half of the valve body connecting hole is a threaded hole, and the lower half is provided with a first sealing groove and a second sealing groove, and the first sealing groove and the second sealing groove are separated by a set distance.

3. The novel annular pressure vessel valve seat structure according to claim 2, characterized in that: The valve body is installed in the threaded hole, the retaining ring is installed in the first sealing groove, and the sealing ring is installed in the second sealing groove.

4. The novel annular pressure vessel valve seat structure according to claim 1, characterized in that: The distance between the shoulder and the top of the valve seat body is smaller than the distance between the shoulder and the bottom of the valve seat body.

5. The novel annular pressure vessel valve seat structure according to claim 1, characterized in that: The shoulder adopts an inwardly concave structure, and the concave surface of the shoulder is flush with the inner ring surface of the pressure vessel.

6. The novel annular pressure vessel valve seat structure according to claim 5, characterized in that: A plurality of fiber limiting protrusions are irregularly distributed on the concave surface of the shoulder, and fibers are wound on the concave surface of the shoulder.

7. The novel annular pressure vessel valve seat structure according to claim 1, characterized in that: The valve seat body is arranged in the inner shell as an embedded part. The inner shell is an annular hollow chamber structure. The valve seat body is located on the inner ring of the inner shell.

8. The novel annular pressure vessel valve seat structure according to claim 1, characterized in that: The inner liner limiting protrusion is annular and limits the inner liner.

9. The novel annular pressure vessel valve seat structure according to claim 1, characterized in that: The fiber limiting protrusion is an elliptical protrusion, and the major axis of the elliptical protrusion is parallel to the winding direction of the fiber.

10. An annular pressure vessel, characterized in that: The valve seat structure comprises the valve seat structure according to any one of claims 1 to 9.

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