Supporting ring of high-pressure O-shaped ring

Abstract

The utility model provides a supporting ring of a high-pressure O-shaped ring, which comprises a cylinder body and a piston arranged in the cylinder body, a pressing ring is sleeved on the outer side of the piston, a pressing plate is arranged at the lower end of the piston, a sealing groove is formed among the pressing ring, the pressing plate and the piston, and a check ring assembly and a sealing ring are arranged in the sealing groove. The check ring assembly is installed between the sealing ring and the pressing ring, one side of the check ring assembly is tightly attached to the inner wall of the cylinder body, and the side, away from the cylinder body, of the check ring assembly is attached to the peripheral face of the piston. The check ring assembly is used for preventing the sealing ring from being extruded into a gap between the cylinder body and the piston; a limiting groove is formed in the face, making contact with the sealing ring, of the check ring assembly. The hydraulic cylinder can solve the problems that in the prior art, a sealing ring is prone to being squeezed into a gap between the cylinder body and the piston, abrasion of the sealing ring is accelerated, replacement of the sealing ring is frequent, and use cost is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of static presses, and in particular relates to a support ring for a high-pressure O-ring. Background Art

[0002] Warm isostatic pressing technology is a method of warm isostatic pressing of polymer materials by sealing a certain temperature pressure medium in a closed working cylinder and using the principle that the pressure of each pressure medium is equal. During the compression process, the distance between the actual workpiece molecules is reduced and the density is increased, which changes the physical and even chemical properties of the pressed objects. Warm isostatic pressing products have high quality and good mechanical properties and are mostly used for the molding of special-shaped parts.

[0003] In the prior art, the piston rod of the warm isostatic press is sealed and inserted into the high-pressure chamber by a sealing ring. For example, in the prior art, the utility model with publication number CN113134991A discloses a warm isostatic press (hereinafter referred to as: prior art 1), which includes a frame, a pressurizing cylinder is installed on the upper beam of the frame, and a high-pressure chamber located directly below the pressurizing cylinder is installed on the lower beam of the frame, and the piston rod of the pressurizing cylinder can be sealed and inserted into the high-pressure chamber; it also includes a heat transfer tank filled with heat transfer oil, and an electric heater is arranged in the heat transfer tank; an oil filling hole is opened at the bottom of the high-pressure chamber, and an oil return hole is opened at the top of the high-pressure chamber; the heat transfer tank is connected to the high-pressure chamber through a heat transfer pump, a one-way valve, and an oil filling hole by a pipeline, and the heat transfer tank is also connected to the high-pressure chamber through an oil return pipe and an oil return hole.

[0004] Although the piston rod in the prior art 1 is inserted into the high-pressure chamber through the sealing ring, the sealing performance of the sealing ring provided in the prior art 1 is poor. When the inner diameter of the cylinder body increases with the internal pressure, the sealing ring provided in the prior art 1 is easily squeezed into the gap between the cylinder body and the piston, causing the sealing ring to wear faster and the sealing ring to be replaced frequently, thereby increasing the cost of use. Utility Model Content

[0005] The purpose of the utility model is to provide a support ring for a high-pressure O-ring, which, in actual use, can solve the problem that the sealing ring provided in the prior art is easily squeezed into the gap between the cylinder body and the piston, causing accelerated wear of the sealing ring, frequent replacement of the sealing ring, and increased use costs.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A support ring for a high-pressure O-ring comprises a cylinder body and a piston arranged inside the cylinder body, a pressure ring is sleeved on the outer side of the piston, a pressure plate is arranged at the lower end of the piston, a sealing groove is formed between the pressure ring, the pressure plate and the piston, and a retaining ring assembly and a sealing ring are arranged in the sealing groove;

[0008] The retaining ring assembly is installed between the sealing ring and the pressure ring, one side of the retaining ring assembly is tightly fitted with the inner wall of the cylinder body, and the side of the retaining ring assembly away from the cylinder body is fitted with the outer peripheral surface of the piston; the retaining ring assembly is used to prevent the sealing ring from being squeezed into the gap between the cylinder body and the piston;

[0009] A limiting groove is arranged on the side of the retaining ring assembly that contacts the sealing ring.

[0010] Preferably, the retaining ring assembly includes a first supporting ring and a second supporting ring, the first supporting ring is arranged between the cylinder body and the second supporting ring, the second supporting ring is arranged between the first supporting ring and the piston, and the sealing ring is arranged between the first supporting ring and the sealing ring.

[0011] Preferably, the cross-sections of the first support ring and the second support ring are both right triangles, the inclined surface of the first support ring fits with the inclined surface of the second support ring, and the first support ring can slide along the inclined surface of the second support ring relative to the second support aperture.

[0012] Preferably, the upper end of the first support ring and the lower end of the second support ring are both provided with chamfers.

[0013] Preferably, a pressure relief groove is provided on a side of the first support ring close to the cylinder body.

[0014] Preferably, the first supporting ring and the second supporting ring are both made of copper.

[0015] Preferably, hard rubber rings are provided inside the first supporting ring and the second supporting ring.

[0016] Preferably, the pressure ring is threadedly connected to the piston.

[0017] Preferably, the sealing ring is made of rubber material.

[0018] Preferably, the sealing ring is arranged in an O-shaped structure.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the utility model, the inner diameter of the cylinder increases as the pressure inside the cylinder increases; in the process of the inner diameter of the cylinder changing, the sealing ring is squeezed, and the retaining ring assembly arranged between the cylinder and the piston expands outward under the action of the squeezed sealing ring, so that the side of the retaining ring assembly close to the cylinder is always tightly fitted with the inner wall of the cylinder;

[0021] When the inner diameter of the cylinder body decreases as the pressure inside the cylinder body decreases, the sealing ring is no longer squeezed by the inner wall of the cylinder body and rebounds. The retaining ring assembly shrinks inwardly under the action of the rebounding sealing ring, and the retaining ring assembly always remains in close contact with the inner wall of the cylinder body during the inward contraction process. The retaining ring assembly provided in the utility model can be deformed as the inner diameter of the cylinder body increases, so that the retaining ring assembly always remains in close contact with the inner wall of the cylinder body during the change of the inner diameter of the cylinder body. This can prevent the sealing ring from being squeezed in between the cylinder body and the retaining ring assembly under high pressure, further increasing the service life of the sealing ring and saving costs.

[0022] The limiting groove is used to limit the sealing ring, further avoiding the problem of displacement of the sealing ring after being squeezed by the cylinder body with a changing inner diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional diagram of the utility model.

[0025] Figure 2 It is a schematic diagram of the use state of the utility model.

[0026] Figure 3 For this schematic diagram, Figure 1 A partial enlarged view of point A in the middle.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 101-cylinder body, 102-piston, 103-pressure ring, 104-pressure plate, 105-sealing groove, 106-retaining ring assembly, 107-sealing ring, 108-limiting groove, 109-first supporting ring, 110-second supporting ring, 111-chamfer, 112-rubber ring. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0035] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] See also Figure 1-Figure 3 The present embodiment discloses a support ring assembly for a high-pressure O-ring, specifically, a support ring for a high-pressure O-ring, comprising a cylinder body 101 and a piston 102 arranged inside the cylinder body 101, a compression ring 103 is sleeved on the outer side of the piston 102, a compression plate 104 is arranged at the lower end of the piston 102, a sealing groove 105 is formed between the compression ring 103, the compression plate 104 and the piston 102, and a retaining ring assembly 106 and a sealing ring 107 are arranged in the sealing groove 105;

[0038] The retaining ring assembly 106 is installed between the sealing ring 107 and the pressure ring 103. One side of the retaining ring assembly 106 is tightly fitted with the inner wall of the cylinder body 101, and the side of the retaining ring assembly 106 away from the cylinder body 101 is fitted with the outer peripheral surface of the piston 102. The retaining ring assembly 106 is used to prevent the sealing ring 107 from being squeezed into the gap between the cylinder body 101 and the piston 102.

[0039] A limiting groove 108 is provided on a surface of the retaining ring assembly 106 that contacts the sealing ring 107 .

[0040] In the present invention, the inner diameter of the cylinder 101 increases as the pressure inside the cylinder 101 increases; in the process of the inner diameter of the cylinder 101 changing, the sealing ring 107 is squeezed, and the retaining ring assembly 106 arranged between the cylinder 101 and the piston 102 expands outwardly under the action of the squeezed sealing ring 107, so that the side of the retaining ring assembly 106 close to the cylinder 101 is always tightly fitted with the inner wall of the cylinder 101; when the inner diameter of the cylinder 101 decreases as the pressure inside the cylinder 101 decreases, the sealing ring 107 is no longer squeezed by the inner wall of the cylinder 101 and rebounds, and the retaining ring assembly 106 shrinks inwardly under the action of the rebounding sealing ring 107, and the retaining ring assembly During the process of inward contraction, 106 always maintains a close fit with the inner wall of the cylinder body 101; the retaining ring assembly 106 provided in the utility model can be deformed as the inner diameter of the cylinder body 101 changes, so that the retaining ring assembly 106 always keeps a close fit with the inner wall of the cylinder body 101 during the process of the inner diameter of the cylinder body 101 changing, thereby preventing the sealing ring 107 from being squeezed in between the cylinder body 101 and the retaining ring assembly 106 under high pressure, further improving the service life of the sealing ring 107 and saving costs; the limiting groove 108 is used to limit the sealing ring 107, further avoiding the problem of displacement of the sealing ring 107 after being squeezed by the cylinder body 101 with a changing inner diameter.

[0041] The retaining ring assembly 106 includes a first support ring 109 and a second support ring 110. The first support ring 109 is arranged between the cylinder body 101 and the second support ring 110, the second support ring 110 is arranged between the first support ring 109 and the piston 102, and the sealing ring 107 is arranged between the first support ring 109 and the sealing ring 107. The first support ring 109 is always in close contact with the inner wall of the cylinder body 101 during the process of the inner diameter of the cylinder body 101 changing, and the second support ring 110 is always in close contact with the outer peripheral surface of the piston 102 during the process of the inner diameter of the cylinder body 101 changing.

[0042] Further optimization, the cross-sections of the first support ring 109 and the second support ring 110 are both right triangles, the inclined surface of the first support ring 109 fits with the inclined surface of the second support ring 110, and the first support ring 109 can slide along the inclined surface of the second support ring 110 relative to the second support aperture. The inner diameter of the cylinder 101 will increase as the pressure inside the cylinder 101 increases; in the process of the change of the inner diameter of the cylinder 101, the sealing ring 107 is squeezed, and the first support ring 109 arranged between the cylinder 101 and the piston 102 expands outwards under the action of the squeezed sealing ring 107. The right-angled surface of the first support close to the side of the cylinder 101 is always in close contact with the inner wall of the cylinder 101 during the change of the inner diameter of the cylinder 101; when the first support ring 109 expands outwards under the action of the sealing ring 107, The second support ring 110 also expands outward as the cylinder body 101 expands, and the right-angled surface close to the outer peripheral surface of the piston 102 is always in close contact with the outer peripheral surface of the piston 102; when the inner diameter of the cylinder body 101 decreases as the pressure inside the cylinder body 101 decreases, the sealing ring 107 is no longer squeezed by the inner wall of the cylinder body 101 and rebounds, and the first support ring 109 shrinks inward under the action of the rebounding sealing ring 107, and the first support ring 109 always maintains a close contact with the inner wall of the cylinder body 101 during the inward contraction process.

[0043] The upper end of the first support ring 109 and the lower end of the second support ring 110 are both provided with chamfers 111. The chamfers 111 have different depths according to the different expansion amplitudes of the cylinder body 101, thereby effectively extending the time that the first support ring 109 and the second support ring 110 are not squeezed out.

[0044] Further optimization is performed, and the cross-sectional area of ​​the first support ring 109 is the same as the cross-sectional area of ​​the second support ring 110. By making the cross-sectional area of ​​the first support ring 109 the same as the cross-sectional area of ​​the second support ring 110, the first support ring 109 can be squeezed and the second support ring 110 can be driven to expand outwards along with the expansion of the cylinder body 101, so that the sealing ring 107 can be prevented from being squeezed into between the cylinder body 101 and the retaining ring assembly 106 under high pressure, further improving the service life of the sealing ring 107 and saving costs.

[0045] Embodiment 2

[0046] See also Figure 1-Figure 3 This embodiment is further optimized on the basis of the first embodiment, and the first support ring 109 and the second support ring 110 are both made of copper. By making the first retaining ring and the second retaining ring both made of copper, the first retaining ring and the second retaining ring can have good wear resistance, ductility and resilience.

[0047] The first support ring 109 and the second support ring 110 are both provided with a rubber ring 112. By providing the hard rubber ring 112 in the first support ring 109 and the second support ring 110, the strength of the first support ring 109 and the second support ring 110 can be further improved while reducing the weight of the first support ring 109 and the second support ring 110.

[0048] Further optimized, the pressure ring 103 is threadedly connected to the piston 102. By making the pressure ring 103 and the piston 102 detachably connected, the first support ring 109 and the second support ring 110 can be easily disassembled and replaced.

[0049] The sealing ring 107 is made of rubber material. The sealing ring 107 made of rubber has good pressure resistance and sealing performance.

[0050] Further optimization, the sealing ring 107 is arranged in an O-shaped structure. The sealing ring 107 arranged in an O-shaped structure can better seal the gap between the piston 102 and the cylinder body 101.

[0051] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support ring for a high-pressure O-ring, comprising a cylinder (101) and a piston (102) disposed inside the cylinder (101), a pressure ring (103) being sleeved on the outer side of the piston (102), and a pressure plate (104) being disposed at the lower end of the piston (102), characterized in that: A sealing groove (105) is formed between the pressure ring (103), the pressure plate (104) and the piston (102), and a retaining ring assembly (106) and a sealing ring (107) are arranged in the sealing groove (105); The retaining ring assembly (106) is installed between the sealing ring (107) and the pressure ring (103), one side of the retaining ring assembly (106) is tightly fitted with the inner wall of the cylinder body (101), and the side of the retaining ring assembly (106) away from the cylinder body (101) is fitted with the outer peripheral surface of the piston (102); the retaining ring assembly (106) is used to prevent the sealing ring (107) from being squeezed into the gap between the cylinder body (101) and the piston (102); A limiting groove (108) is provided on a surface of the retaining ring assembly (106) that contacts the sealing ring (107).

2. A high pressure O-ring support ring according to claim 1, characterized in that: The retaining ring assembly (106) comprises a first supporting ring (109) and a second supporting ring (110), wherein the first supporting ring (109) is arranged between the cylinder body (101) and the second supporting ring (110), the second supporting ring (110) is arranged between the first supporting ring (109) and the piston (102), and the sealing ring (107) is arranged between the first supporting ring (109) and the sealing ring (107).

3. A high pressure O-ring support ring according to claim 2, characterized in that: The cross-sections of the first support ring (109) and the second support ring (110) are both right-angled triangles, the inclined surface of the first support ring (109) fits the inclined surface of the second support ring (110), and the first support ring (109) can slide along the inclined surface of the second support ring (110) relative to the second support aperture.

4. A high pressure O-ring support ring according to claim 2, characterized in that: The upper end of the first support ring (109) and the lower end of the second support ring (110) are both provided with chamfers (111).

5. The support ring of a high pressure O-ring according to claim 2, characterized in that: The cross-sectional area of ​​the first support ring (109) is the same as the cross-sectional area of ​​the second support ring (110).

6. A high pressure O-ring support ring according to claim 2, characterized in that: The first supporting ring (109) and the second supporting ring (110) are both made of copper.

7. A high pressure O-ring support ring according to claim 2, characterized in that: A hard rubber ring (112) is disposed inside the first supporting ring (109) and the second supporting ring (110).

8. The high pressure O-ring support ring according to claim 1, characterized in that: The pressure ring (103) is threadedly connected to the piston (102).

9. The high pressure O-ring support ring according to claim 1, characterized in that: The sealing ring (107) is made of rubber material.

10. The high pressure O-ring support ring according to claim 1, characterized in that: The sealing ring (107) is arranged in an O-shaped structure.

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