CN201335152Y

CN201335152Y - Universal ultra-high voltage sealing ring

Info

Publication number: CN201335152Y
Application number: CNU2008200932862U
Authority: CN
Inventors: 张京台
Original assignee: Gao Manjie
Current assignee: Gao Manjie
Priority date: 2008-04-10
Filing date: 2008-04-10
Publication date: 2009-10-28
Anticipated expiration: 2018-04-10

Abstract

The utility model discloses a universal ultra-high voltage sealing ring which is a spring-shaped strip body with a quadrangular section. The side faces of adjacent strip body segments are matched in a plane manner. The inner surface of the strip body is closely matched with the surface of a shaft which is penetrated in the center of the sealing ring. The outer surface of the strip body is closely matched with the inner surface of a cylinder body. The sealing ring is firm as well as durable, can be used for reciprocating motion and rotary motion sealing, resists high/low temperature, endures abrasion as well as corrosion, has good sealing effect, and can be suitable for extremely high voltage environments.

Description

General-purpose superhigh pressure sealing circle

Technical field

The utility model relates to a kind of seal ring, especially place the seal ring between cylinder body and the axis body.

Back of the body border technology

Present nonmetal seal ring, the especially rubber seal of generally using on the market.Mainly contain two kinds of reciprocating movement sealing and rotary seals according to being applied in different motion sealing, narrate shortcoming below respectively:

Reciprocating movement sealing (as hydraulic press): because the rubber seal of hydraulic press, in state of rest after a period of time (for example 2-3 month), its rubber just can with the metal adhesion of cylinder body together, be difficult to start once more, so must allowing, its design stays seam between seal ring and the cylinder body, prevent bonding to keep both to lubricate, so sealing effect is poor; For preventing the slot leakage of pressure liquid between seal ring and cylinder body, will adopt the higher liquid of stickiness, high viscosity liquid but produces huge surface friction drag in hydraulic press, waste a large amount of energy.Even like this when hydraulic press work a period of time, operating temperature raises, the denseness of pressure liquid descends, the problem that also can make leakage is seriously.For preventing this phenomenon, hydraulic press just will possess the cooling system of pressure oil, and 40% the energy is used for driving this cooling system.The material of rubber seal itself is not durable, and is easy to wear, and along with the increase of service time, the rubber material is because loss produces the leakage of pressure liquid.Single rubber seal can not be located and can't be reached to sealing effect, must be aided with other auxiliary devices, and the metal positioning ring of several difference in functionalitys of every limit, front and back will reach 7 more than altogether, and some precision optical machinery uses 13 to 17 more than especially.Assembly is many more complicated more, and cost is high more, and rubber seal can not bear too big pressure, can not resist high temperature and can not be anticorrosion.

Rotary seal: the current seal ring product structure that rotatablely moves is very complicated, and minimum will have 11 parts.Because its parts are all very accurate, number of packages is many again, and the nature degree of difficulty is big during production and processing, and cost is high again.Parts are many and accurate, and the chance that goes wrong increases, but owing to being to rub leak stopping mutually by direct contact, its working life is but very short.Because sealing surface rubs mutually, produce high heat, can make the structural change of material itself, often there is adverse consequences to produce, situation can be very serious sometimes.Though the existing on the market high-abrasive materials such as Tungsten carbite or cementite that adopt, being still all the time can abrasion, and working life is very short.Equally, these Sealings also exist can not bear too big pressure, can not resist high temperature and can not the corrosion-resistant problem.

The model utility content

The utility model is at the above-mentioned defective of prior art, but will provide a kind of sturdy and durable anti-high and low-temp, abrasion-proof corrosion-proof, good sealing effect, applicable to the seal ring of hyperbaric environment.

For achieving the above object, the technological scheme that the utility model adopted is: the seal ring cross section is tetragonal spring-like bar belt body, the side of adjacent strip belt body fragment is that the plane cooperates, can closely paste mutually, seal ring is connected to form by two groups of different spring-like bar belt bodies of internal diameter, its little internal diameter be the surperficial close-fitting axis body sealing layer of axle that runs through with seal ring central authorities, large diameter be internal surface with the cylinder body cylinder body sealing layer that closely cooperates.

Also be compounded with between the two-layer compound spring-like bar belt body of seal ring axis body sealing layer and cylinder body sealing layer and adjust layer, it is bigger than axis body sealing layer to adjust layer internal diameter, does not contact axis body, and external diameter is littler than cylinder body sealing layer, does not contact cylinder body.

After adopting this structure, because cross section is tetragonal spring-like bar belt body, the side of adjacent strip belt body fragment is that the plane cooperates, and can fit does not fully interspace.The axle surface that the internal surface of bar belt body minimum diameter layer and seal ring central authorities run through closely cooperates, and the outer surface of the maximum outside diameter of bar belt body and the internal surface of cylinder body closely cooperate.Utilize this seal ring to have spring-like radial elastic during use, can on demand seal diameter be dwindled or amplify during installation, put into the space between cylinder body and axis body, after pulling out setting tool, enlarged the part of diameter at seal ring, axis body is held in the withdrawal that can automatically reset tightly, has received the part of diameter little at seal ring simultaneously, casing wall is pressed in the outwards expansion that also can automatically reset, and finishes horizontal axis body and the positive confinement between cylinder body.When the front of spring-like bar belt body is under pressure, just can paste tightly mutually between adjacent segment, pressure is big more closely to be pasted more mutually, does not stay any space, finishes longitudinal sealing.This seal ring good sealing effect, thereby can adopt the extremely low pressure liquid of denseness, it is little to produce the internal friction resistance.The equipment energy consumption loss is atomic.This seal ring can be made of metal, and abrasion resistance is good.Adopt metal material, more can resist negative 200 and take the photograph the operating temperature that third constellations degree to 900 is taken the photograph third constellations degree, more can plate gold or platinum whenever necessary to refuse deep-etching.Seal ring adopts three layers of different spring-like band bluk recombination in inside and outside footpath to form, and the axle surface that minimum diameter layer internal surface and seal ring central authorities run through closely cooperates, and the internal surface of maximum outside diameter layer outer surface and cylinder body closely cooperates.Because the dynamics of seal ring radical elasticity is extremely slight, need and axis body and cylinder body fully closely to paste mutually, only touch axis body and cylinder body in fact, how high regardless of movement velocity, how long all can not wear and tear service time.Also be compounded with between the two-layer compound spring-like bar belt body of seal ring axis body sealing layer and cylinder body sealing layer and adjust layer, it is bigger than axis body sealing layer to adjust layer internal diameter, does not contact axis body, and external diameter is littler than cylinder body sealing layer, does not contact cylinder body.The adjustment layer can be eliminated because the phenomenon of cylinder body that the error of processing or assembling causes and axle decentraction also can be adjusted the displacement phenomenon that with the passing of time causes owing to using, and the assurance seal ring can be transported forever and be in sealing state.

Description of drawings

Fig. 1 is the utility model ring structure schematic appearance.

Fig. 2 is the utility model seal ring embodiment three-stage structure schematic representation.

Fig. 3: three sections seal rings of the utility model are applied to rotatablely move seal and assemble schematic representation

Fig. 4: three sections seal rings of the utility model are applied to reciprocating movement sealing assembling schematic representation

Embodiment

As shown in Figure 1, the utility model seal ring, for cross section is tetragonal spring-like bar belt body 1, the side 2 of adjacent strip belt body fragment cooperates for the plane, the axle surface that the internal surface 3 and the seal ring central authorities of bar belt body minimum diameter run through closely cooperates, and the outer surface 4 of bar belt body maximum outside diameter closely cooperates with the internal surface of cylinder body.

As shown in Figure 2, the utility model embodiment, seal ring is made up of three sections different spring-like band bluk recombinations in inside and outside footpath.The internal surface 3 that minimum diameter is one section is used to fit tightly the axle surface that central authorities run through, and its external diameter does not contact cylinder body, and this section is called the axis body seal section.The outer surface 4 that the seal ring maximum outside diameter is one section is used to fit tightly cylinder body, and its internal diameter does not contact axis body, is called the cylinder body seal section.Between axis body seal section and the cylinder body seal section, also be compounded with and adjust section 5, its internal diameter is bigger than axis body seal section, does not contact axis body, and external diameter is littler than cylinder body seal section, does not contact cylinder body.

As shown in Figure 3, the utility model specifically is implemented on the sealing means that rotatablely moves, seal ring is made up of three sections different spring-like band bluk recombinations in inside and outside footpath, and minimum diameter section internal surface 3 fits tightly with axle 6 surfaces that seal ring central authorities run through, and is called the axis body seal section; Maximum outside diameter section outer surface 4 closely cooperates with the internal surface of cylinder body 7, is called the cylinder body seal section.Also be compounded with between two sections compound spring-like bar belt bodies of axis body seal section and cylinder body seal section and adjust section 5, adjust section internal diameter of the seal ring internal surface and do not contact axis body, the external diameter outer surface does not contact cylinder body.Cylinder body 7 inside outwards are equipped with retainer ring 8 and pressure ring 9 successively.Place the pressure spring 10 in the pressure annular groove that pressure is provided, push seal ring to, its seal ring lamella is close to mutually, prevent the slot leakage between the side that the seal ring lamella pastes mutually.

As shown in Figure 4, the utility model specifically is implemented on the sealing means in the reciprocating mechanism, seal ring is made up of three sections different spring-like band bluk recombinations in inside and outside footpath, and minimum diameter section internal surface 3 fits tightly with axle 5 surfaces that seal ring central authorities run through, and is called the axis body seal section; Maximum outside diameter section outer surface 4 closely cooperates with the internal surface of cylinder body 7, is called the cylinder body seal section.Also be compounded with between two sections compound spring-like bar belt bodies of axis body seal section and cylinder body seal section and adjust section 5, adjust section internal diameter of the seal ring internal surface and do not contact axis body, the external diameter outer surface does not contact cylinder body.Cylinder interior outwards is equipped with 8 retainer rings successively.Place the pressure spring 10 in the support annular groove that pressure is provided, push seal ring to, its seal ring lamella is close to mutually, prevent the slot leakage between the side that the seal ring lamella pastes mutually.

This seal ring friction is extremely low, sturdy and durable, but anti-high and low-temp, abrasion-proof corrosion-proof, good sealing effect is applicable to the extra-high voltage environment.

Claims

1, general-purpose superhigh pressure sealing circle, it is characterized in that described seal ring is that cross section is tetragonal spring-like bar belt body, the side of adjacent strip belt body fragment is that the plane cooperates, the axle surface that the internal surface of bar belt body and seal ring central authorities run through closely cooperates, and the outer surface of bar belt body and the internal surface of cylinder body closely cooperate.

2, general-purpose superhigh pressure sealing circle according to claim 1, it is characterized in that described seal ring, connect to form by two groups of different spring-like bar belt bodies of internal diameter, the surperficial close-fitting axis body sealing layer of axle for running through with seal ring central authorities of its little internal diameter, large diameter for the internal surface of the cylinder body cylinder body sealing layer that closely cooperates.

3, general-purpose superhigh pressure sealing circle according to claim 2 is characterized in that also being connected with between described axis body sealing layer and the cylinder body sealing layer adjustment layer of spring-like bar belt body.