Bipolar sealing ring

Abstract

The utility model discloses a bipolar sealing ring which comprises an inner ring and an outer ring, the outer ring is located outside the inner ring, a connecting section is fixedly connected between the outer side face of the outer ring and the outer side face of the inner ring, the connecting section is of a circular plate-shaped structure, and the outer ring, the inner ring and the connecting section are all made of metal materials and are integrally formed. The outer ring comprises a first outer supporting ring and a first elastic supporting piece, the first outer supporting ring is fixed to the outer side face of the connecting section, and the first elastic supporting piece is installed in the first outer supporting ring; the inner ring comprises a second outer supporting ring and a second elastic supporting piece, the second outer supporting ring is fixed to the inner side face of the connecting section, and the second elastic supporting piece is installed in the second outer supporting ring. The utility model belongs to the technical field of sealing rings, and particularly relates to a bipolar sealing ring.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sealing ring, specifically point to bipolar sealing ring. BACKGROUND

[0002] In the field of controlled nuclear fusion, due to its involvement in the handling of radioactive media such as deuterium, tritium, etc., it puts forward very high requirements for sealing devices, and traditional sealing technology exposes many problems when dealing with such special and dangerous media.

[0003] On the one hand, it is impossible to achieve long-term reliable sealing of radioactive media, and with the passage of time or under complex working conditions, media leakage is likely to occur, which not only causes resource waste, but also poses a serious threat to the safety of the environment and operating personnel; on the other hand, traditional sealing products have poor performance in terms of nuclear radiation resistance, and their sealing performance will gradually decline in a nuclear radiation environment, which cannot meet the long-term stable operation requirements of controlled nuclear fusion devices. INVENTION CONTENTS

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a bipolar sealing ring, which effectively solves the problem of poor performance in terms of sealing and nuclear radiation resistance.

[0005] In order to realize the above function, the technical scheme adopted by the utility model is as follows: a bipolar sealing ring, comprising an inner ring and an outer ring, the outer ring is located outside the inner ring, a connecting section is fixedly connected between the outer ring and the outer side surface of the inner ring, the connecting section is a circular plate structure, the outer ring, the inner ring and the connecting section are all made of metal material and are integrally formed;

[0006] The outer ring comprises an outer support ring one and an elastic support one, the outer support ring one is fixed on the outer side surface of the connecting section, and the elastic support one is installed in the outer support ring one;

[0007] The inner ring comprises an outer support ring two and an elastic support two, the outer support ring two is fixed on the inner side surface of the connecting section, and the elastic support two is installed in the outer support ring two.

[0008] Preferably, the outer ring further comprises a metal shielding layer, the metal shielding layer is sleeved on the outer side surface of the outer support ring one and fixed on the outer side surface of the connecting section, and a predetermined space is left between the metal shielding layer and the outer support ring one.

[0009] Preferably, the metal shielding layer is made of nickel-based alloy material.

[0010] Preferably, the outer support ring I is internally provided with an inner support ring I, the elastic support I is located in the inner support ring I, the outer support ring II is internally provided with an inner support ring II, the elastic support II is located in the inner support ring II, and the inner support ring I and the inner support ring II are both made of metal.

[0011] Preferably, the elastic support I and the elastic support II are both spiral metal springs.

[0012] Preferably, the outer ring and the inner ring are both C-shaped in longitudinal section, and the C-shaped notches of the outer ring and the inner ring are oppositely arranged towards the connecting section.

[0013] Preferably, the outer ring, the inner ring and the connecting section form a cavity.

[0014] Preferably, a plurality of groups of fixing holes are arranged on the connecting section at equal intervals.

[0015] The utility model adopts the above-mentioned structure and achieves the beneficial effects as follows:

[0016] 1. Through the unique bipolar design of the bipolar sealing ring and the special structure of the outer ring and the inner ring, when the inner ring sealing appears problems, reliable prevention can be realized through the sealing of the outer ring, and the leakage of the medium can also be effectively prevented, the safety of the system is further ensured, the radioactive medium deuterium, tritium and the like can be reliably sealed, and compared with the traditional sealing ring, the reliability of the sealing is greatly improved.

[0017] 2. The product knife edge adopts a low pre-tightening force design, the pressure on the installation component is reduced while the sealing effect is ensured, and the installation difficulty and the damage risk of the equipment are reduced.

[0018] 3. The metal shielding ring is additionally arranged on the outer ring, even if the bipolar sealing ring appears a small amount of leakage, the metal shielding ring can be used as the last barrier to prevent the radioactive medium deuterium and tritium from further leaking to the external environment, the internal environment of the nuclear fusion device is complex, and may be disturbed by external factors such as electromagnetic radiation, plasma impact and mechanical vibration, the metal shielding ring has high mechanical strength and stability, can resist the damage of these external interference factors on the sealing system, can also play the role of electromagnetic shielding, prevents the external electromagnetic field from interfering with the inside of the sealing ring, and can also prevent a small amount of charged particles or electromagnetic signals generated by the internal leakage from radiating outward, and reduce the influence on the electromagnetic environment around the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model discloses a bipolar sealing ring Figure 1 ;

[0020] Figure 2 The utility model discloses a bipolar sealing ringFigure 2 ;

[0021] Figure 3 This is a schematic diagram of the overall structure of the bipolar sealing ring proposed in this utility model. Figure 3 ;

[0022] Figure 4 A cross-sectional view of the bipolar sealing ring proposed in this utility model. Figure 1 ;

[0023] Figure 5 A cross-sectional view of the bipolar sealing ring proposed in this utility model. Figure 2 ;

[0024] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0025] Figure 7 This is a state diagram of the bipolar sealing ring proposed in this utility model.

[0026] Among them, 1. Inner ring, 2. Outer ring, 3. Connecting section, 4. Outer support ring one, 5. Elastic support component one, 6. Outer support ring two, 7. Elastic support component two, 8. Metal shielding layer, 9. Inner support ring one, 10. Inner support ring two, 11. Fixing hole. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0029] like Figures 1-7As shown, the utility model discloses a double -stage sealing ring, including inner ring 1 and outer ring 2, outer ring 2 is located in the outer ring 1, and outer ring 2 and the outer side of inner ring 1 are fixedly connected with connecting section 3, and connecting section 3 is circular plate structure, and outer ring 2 and inner ring 1 are all metal material and integrally formed with connecting section 3, make the contact between sealing ring and sealing surface more evenly dispersed, not concentrated in smaller area, effectively reduce the situation of local pressure too high, the longitudinal section of outer ring 2 and inner ring 1 is all C type, and the elasticity and sealing property of sealing ring are enhanced, so that sealing ring can still keep reliable sealing performance under lower pre-tightening force, and the C type gap of outer ring and inner ring is respectively towards connecting section and oppositely arranged, and the cavity is formed between outer ring 2, inner ring 1 and connecting section 3, which is convenient for medium leakage detection, and outer ring 2 includes outer support ring one 4 and elastic support piece one 5, and outer support ring one 4 is fixed on the outer side of connecting section 3, and elastic support piece one 5 is installed in outer support ring one 4, and inner ring 1 includes outer support ring two 6 and elastic support piece two 7, and outer support ring two 6 is fixed on the inner side of connecting section 3, and elastic support piece two 7 is installed in outer support ring two 6,

[0030] Still install inner support ring one 9 in outer support ring one 4, and elastic support piece one 5 is located in inner support ring one 9, and supports elastic support piece one 5, and still install inner support ring two 10 in outer support ring two 6, and elastic support piece two 7 is located in inner support ring two 10, and inner support ring one 9 and inner support ring two 10 are all metal material, and support elastic support piece two 7, and elastic support piece one 5 and elastic support piece two 7 are all spiral metal springs.

[0031] As shown in the figure, Figure 6 Outer ring 2 still includes metal shielding layer 8, metal shielding layer 8 is sleeved in outer support ring one 4 and is fixed on the outer side of connecting section 3, and there is a predetermined space between metal shielding layer 8 and outer support ring one 4, which provides a certain deformation space, and an elastic support piece can also be arranged in the predetermined space between metal shielding layer 8 and outer support ring one 4 to increase the support strength, and metal shielding layer 8 is made of nickel-based alloy material, which has excellent high-temperature strength and fatigue resistance, can maintain the stability of the structure in complex working environment, has moderate elastic modulus, can produce appropriate elastic deformation when subjected to external force, and can restore to original shape after pressure release, is conducive to realizing good sealing effect, and nickel-based alloy has good resistance to nuclear radiation environment.

[0032] As shown in the figure, Figure 7 Connecting section 3 is provided with a plurality of groups of fixed holes 11 distributed at equal intervals, which can realize the pre-fixing of the double-stage sealing ring and the flange, facilitate the installation operation in inclined, angled and other non-horizontal scenes, simplify the fixing and positioning mode of the double-stage sealing ring, reduce the installation difficulty in inclined, angled and other non-horizontal scenes, and ensure that the double-stage sealing ring can be installed at any angle and not be displaced when subjected to external force.

[0033] In specific use, the bipolar sealing ring is composed of the outer ring 2, the inner ring 1 and the connecting section, the cross sections of the outer ring 2 and the inner ring 1 are designed as C-shaped and are internally provided with supporting rings and elastic supporting members, which jointly ensure the sealing performance and structural stability, the openings of the outer ring 2 and the inner ring 1 are opposite and are both directed to the connecting section 3, and the two are stably connected through the connecting section 3 to form a complete bipolar sealing ring structure;

[0034] The bipolar sealing ring is installed at a sealing part of the controllable nuclear fusion device, and is tightly attached to the installation part, and due to the low pre-tightening force design, an excessive pre-tightening force is not required in the installation process, the installation difficulty is reduced, and damage to the device caused by excessive pre-tightening is avoided;

[0035] During operation of the device, the inner ring 1 and the outer ring 2 of the bipolar sealing ring are cooperatively structured and work, effectively seal the radioactive medium such as deuterium and tritium, a leakage detection device is arranged outside the device, when there is a leakage sign of the medium, the leakage detection system can timely capture a signal and issue a warning, when the first inner ring 1 seal leaks, the second outer ring 2 seal immediately plays a role to prevent massive leakage of the medium, and time is gained for processing the leakage problem, so that the occurrence of an accident is effectively avoided;

[0036] The last line of defense of the metal shielding layer 8 can produce appropriate elastic deformation when subjected to external force, and can restore to the original state after the pressure is released, which is beneficial to realize a good sealing effect, and the nickel-based alloy has good resistance to a nuclear radiation environment, further ensures the sealing of the sealing ring and the interference of radiation, and can continuously and stably provide reliable sealing protection for the controllable nuclear fusion device.

[0037] The above describes the utility model and its implementation mode, and the description is not limited, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, without creative design, similar structural modes and embodiments of the technical solutions are obtained, which should belong to the protection scope of the utility model.

Claims

1. Bipolar seal ring comprising an inner ring (1) and an outer ring (2), said outer ring (2) being located outside the inner ring (1), characterized in that: The outer ring (2) and the inner ring (1) are fixedly connected with a connecting section (3) between the outer side surfaces, the connecting section (3) is a circular plate structure, the outer ring (2) and the inner ring (1) and the connecting section (3) are all metal materials and are integrally formed; The outer ring (2) comprises an outer support ring I (4) and an elastic support I (5), the outer support ring I (4) is fixed on the outer side surface of the connecting section (3), and the elastic support I (5) is installed in the outer support ring I (4). The inner ring (1) comprises an outer support ring II (6) and an elastic support II (7), the outer support ring II (6) is fixed on the inner side surface of the connecting section (3), and the elastic support II (7) is installed in the outer support ring II (6).

2. The bi-polar seal ring of claim 1, wherein: The outer ring (2) further comprises a metal shielding layer (8), the metal shielding layer (8) is sleeved on the outer support ring I (4) and is fixed on the outer side surface of the connecting section (3), and a predetermined space is reserved between the metal shielding layer (8) and the outer support ring I (4).

3. The bi-polar seal ring of claim 2, wherein: The metal shielding layer (8) is made of a nickel-based alloy material.

4. The bi-polar seal ring of claim 1, wherein: An inner support ring I (9) is further installed in the outer support ring I (4), the elastic support I (5) is located in the inner support ring I (9), an inner support ring II (10) is further installed in the outer support ring II (6), the elastic support II (7) is located in the inner support ring II (10), and the inner support ring I (9) and the inner support ring II (10) are both metal materials.

5. The bi-polar seal ring of claim 4, wherein: The elastic support I (5) and the elastic support II (7) are both spiral metal springs.

6. The bi-polar seal ring of claim 1, wherein: The outer ring (2) and the inner ring (1) are both C-shaped in the longitudinal section, and the C-shaped notches of the outer ring (2) and the inner ring (1) are respectively arranged towards the connecting section (3) and oppositely.

7. The bi-polar seal ring of claim 6, wherein: A cavity is formed between the outer ring (2), the inner ring (1) and the connecting section (3).

8. The bi-polar seal ring of any one of claims 1 or 7, wherein: A plurality of groups of fixed holes (11) are arranged on the connecting section (3).

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