56results about How to "Solve seal failure" patented technology

The invention relates to an anti-jamming device and an anti-jamming method for sealing gas end faces, belonging to the field of devices for sealing the gas end faces. The anti-jamming device comprises a movable sealing ring, a static sealing ring, a film throttle and a gas supply device. Gas supply channels arranged circumferentially and uniformly and not communicated with each other are processed on the static sealing ring; each group of gas supply channels opposite radially are respectively communicated with two sides of a film in the film throttle. Gas provided by the gas supply device is throttled in the film throttle and then conveyed between the end faces to be sealed; the pressure at two sides of the film in the throttle is equal when the sealing runs normally, so the film does not bend and deform; when the static sealing ring deflects angularly, the pressure difference between the two sides of the film in the film throttle is generated; the film bends and deforms by action of the pressure difference; the gas flow resistance at the two sides of the film is changed by bending and deforming so as to be beneficial to recover the sealing to a normal operation condition. The sealing device adaptively provides the anti-jamming capability according to the size of the angular deflection of the static sealing ring.

The invention discloses a heating machine structure capable of improving the sealing stability. A material opening communicated with the inner portion of a shell is formed in the side wall of the shell. A thermal insulation sleeve is sleeved with the material opening. A through hole is formed in the thermal insulation sleeve. A sealing block is arranged on the shell and of a trapezoid body structure matched with the through hole. The side wall of the sealing block makes seamless contact with the side wall of the through hole. Locking mechanisms are arranged on the shell and symmetrically arranged on the two sides of the thermal insulation sleeve. Each locking mechanism comprises a fixed block and a locking pin, wherein the locking pin penetrates through the fixed block. An isolation block is fixed to the sealing block. Connecting plates are symmetrically arranged on the side walls of the isolation block respectively. Hinge pins are arranged on the connecting plate. One end of each hinge pin is arranged inside the isolation block after penetrating through the corresponding connecting plate. The top ends of the connecting plates cave inwards to form through grooves communicated with the symmetrical side walls of the isolation block. One end of each locking pin is arranged inside the corresponding through groove. The mechanical locking structure is adopted for the heating machine structure, and therefore fixed sealing can be kept under the condition that internal pressure changes, and sealing performance is improved.

The invention discloses a solenoid valve. A sealing O-shaped ring for preventing gas from upwards extending is arranged between a secondary valve rod and a guide base, so that high-pressure gas is prevented from entering an inner cavity of an electromagnet, the inner cavity of the electromagnet is prevented from being polluted by working medium, and armature blocking caused by the fact that the residual medium enters the inner cavity of the electromagnet in the working process is prevented, so that abrasion is reduced, and the service life of the product is beneficially prolonged; meanwhile, a balancing cavity and a pressure storage cavity are formed on and under the secondary valve core, so that the electromagnet design burden is reduced greater by utilizing upper-lower gas pressure balancing factors of the secondary valve, and therefore, the weight of the product is lowered, the structure is more compact and the functions are more complete. Besides, the solenoid valve can be used for solving the problem that the sealing is invalid as the sealing force of the secondary valve is increased during a system pressure increasing process and the sealing surface of the secondary valve is damaged, and therefore, the structure of the solenoid valve can be used for prolonging the service life of the product and improving the reliability of the product.

The invention discloses a ball seat, and belongs to the technical field of oilfield flooding. The ball seat comprises a tubular upper connector, an outer barrel, a core pipe, a self-locking shear pin, a clamp spring, a check ring and a lower connector, wherein the upper connector and the lower connector are both connected with the outer barrel; an inner cavity of the lower connector is provided with a first inclined surface; an inner cavity of the core pipe is provided with a second inclined surface and the core pipe is connected with the outer barrel through the self-locking shear pin; the core pipe is provided with a first clamp spring groove, and the clamp spring is arranged in the first clamp spring groove; an inner cavity of the check ring is provided with a third inclined surface and shaped like a calabash formed by overlapping two communicating cylindrical cavities with the same diameter, the width of the overlapping surface is smaller than the diameter of a thrown ball, and the diameter of the cylindrical cavities is larger than the diameter of the thrown ball; a step is arranged on the wall of an inner cavity of the outer barrel; the upper end of the check ring and the step are coplanar, and the lower end of the check ring and the upper end of the lower connector are coplanar; and a second clamp spring groove is formed in the outer barrel, the self-locking shear pin is shorn off, the core pipe moves downwards, and the clamp spring is clamped in the second clamp spring groove. By means of the ball seat, the problems that the thrown ball is difficult to throw and returns to cause sealing failure of a water injection pipe column are solved, and the effect of effectively sealing the water injection pipe column is realized.

The invention provides an anti-vibration clamping buckle, which comprises an upper pressing sheet and a lower pressing sheet, wherein the lower pressing sheet is hinged with the upper pressing sheet, the upper pressing sheet is hinged with a clamping hook, the two sides of the upper pressing sheet are respectively and vertically provided with a first upper mounting plate and a second upper mounting plate, the first upper mounting plate and the second upper mounting plate respectively and downwards extend to the direction of the lower pressing sheet, and a locking device is arranged between the first upper mounting plate and the second upper mounting plate and is used for locking the upper pressing sheet and the lower pressing sheet. The invention also provides a lamp using the anti-vibration clamping buckle. An upper cover and a lower cover of the lamp are buckled and fixed by the upper pressing sheet, the lower pressing sheet and the clamping hook of the anti-vibration clamping buckle, and the upper pressing sheet and the lower pressing sheet are locked and fixed by the locking device, so the loosening of the clamping buckle in a continuous-vibrating environment is avoided, the upper cover and the lower cover of the lamp are firmly fixed and well sealed, and the clamping buckle solves the problem of the prior art that a gap is formed between the upper cover and the lower cover of the lamp due to the gradual loosening of the clamping buckle, and the sealing failure between the upper cover and the lower cover of the lamp is further caused.