33results about How to "Seal applicable" patented technology

The invention discloses a multilayer rubber sealing ring sealing device suitable for sealing the joint of a cavity port and a cavity cover of a vacuum cavity. The multilayer rubber sealing ring sealing device comprises a plurality of rubber sealing rings. The vacuum cavity is provided with containing tanks around the cavity port, the containing tanks are just opposite to the cavity cover, the rubber sealing rings are contained in the containing tanks in one-to-one correspondence and protrude the containing tanks, a cooling tank just opposite to the cavity cover is arranged between the neighboring containing tanks, and cooling pipes in hollow structures are contained in the cooling tanks in one-to-one correspondence; and air exhaust channels are also arranged on the side wall of the vacuum cavity, one ends of the air exhaust channels are communicated with external vacuum equipment, and the other ends of the air exhaust channels are respectively communicated with the cooling tanks. The invention aims to provide the multilayer rubber sealing ring sealing device having the advantages of simple and compact structure, good anti-leakage performance, long service life and multilayer sealing effect.

The invention relates to an arched ring hard seal washer. The longitudinal section of the washer is in an arch shape, a curved bow circular arc is outward, a seal line is arranged on the curved bow circular arc, and a bowstring straight line is parallel to a pipeline. A convex ring table is arranged at the position of an arch handle of the longitudinal section, namely, the convex ring table is arranged in the center of the outer ring of the arched ring hard seal washer. The existing hard seal ring washer elliptical ring (comprising an octagonal ring) belongs to double-sided line sealing, can not be popularized due to high processing accuracy requirement and very high price, only can be used for special high temperature and high pressure occasions, can be only used for a flange and can not be used for loose joint. The seal washer provided by the invention is sealed by a circular arc line and is opposite to a trapezoid ring sealing system, but when an arched ring is applied to the flange, a locating table is omitted, and a locating groove does not need to be formed in the flange, so that the arched ring is especially suitable for sealing the flange.

The invention discloses a preparation method of a joint sealing material. The preparation method comprises the following steps: a component A and a component B are prepared, a polyurethane prepolymer and a curing agent are prepared respectively, the component A and the component B are prepared in the weight ratio being 1:2 in a construction site, and joints are filled with a caulking gun. The polyurethane joint sealing material can be cured at the room temperature, has higher adhesive strength, good caulking performance and prominent expansion deformation capacity for expansion joints of a concrete structure, can be widely used for sealing of road joints and is especially applicable to sealing of concrete expansion joints of ballastless tracks of expressways.

The invention relates to single-component flexible sealing grease, which is mainly applied to the sealing of the cylinder junction surface of a steam turbine of a thermoelectric generator unit. The sealing performance of a junction surface of the thermoelectric generator unit can guarantee whether the unit can safely operate at high temperature and high pressure, but the prior sealing material fails to maintain the sealing performance at high temperature and high pressure. The sealing grease is characterized in that the sealing grease is a liquid pasty fluid at normal temperature, is easy to store and construct, and can be quickly cured when the sealing grease is heated to certain temperature; and a colloid is changed into a sealing material with certain toughness, can resist high temperature of 680 DEG C and high pressure of 320MPa, is surface chemistry resistant and anti-creeping, and can effectively prevent gas or liquid media from being leaked.

The invention discloses a novel environmentally-friendly cable splice closure sealant and a preparation method thereof, and belongs to the technical field of preparation of sealants. The sealant comprises silicone rubber, a flame retardant, butyl rubber, medium molecular weight polyisobutylene, low molecular weight polyisobutylene and an antioxidant. The preparation method comprises the followingsteps: S1, weighing: weighing the raw materials for later use; S2, kneading: adding and kneading the raw materials; S3, blending: blending the obtained kneaded rubber compound; and S4, extruding: extruding the blended rubber compound, and cooling and cutting the extruded rubber compound to obtain the novel environmentally-friendly sealant. The sealant of the invention has excellent adhesion, flameretardancy, filling property, sealing property, water resistance, high and low temperature resistance, acid resistance, alkali resistance, salt resistance and dielectric property; preparation materials of the sealant do not contain solvents or halogens, so the sealant is environmentally friendly; and the preparation method has the characteristics of simple production process, time saving and energy saving, and is suitable for industrial large-scale production.

The invention discloses a sealing method, which seals a silicone rubber female die through a method of identical material, equipment and process vacuum casting. The sealing method comprises the following steps: (1), pretreating silicone rubber female die on manufacture equipment of the silicone rubber female die; (2), sealing the silicone rubber female die through the manufacture equipment of the silicone rubber female die; and (3), treating the sealed silicone rubber female die. The silicone rubber female die is subjected to identical material, casting equipment and casting equipment to realize the sealing of the silicone rubber female die subjected to die opening, additive deformation is hardly produced, the sealing effect is good, the method is convenient to operate, and large additive deformation is not produced to a model. Raw material which is the same with that of the silicone rubber female die is taken as sealing material, a sealing layer and the model can perfectly form a whole body, the leakage of casting fluid and deformation caused by high fastening force are avoided, the sealing success rate and the sealing quality are improved, the physical dimension of a photoelasticity model for female die casting is accurate, and the error is small.

The invention discloses a fluid transition water sealing device for a rotatable pipeline. The fluid transition water sealing device comprises sliding sleeves which are fixedly mounted on rotatable shaft heads and can rotate along the rotatable shaft heads, fluid transition pipes fixedly arranged through supporting seats, one end of each fluid transition pipe being connected internally to each sliding sleeve in a sleeving manner, and sealing mechanisms arranged between the fluid transition pipes and the sliding sleeves, wherein the sealing mechanisms comprise annular water storage tanks arranged along the circumferential directions of the outer walls of the fluid transition pipes, water supply tanks which are arranged on the outer walls of the fluid transition pipes and are communicated to the outside through the water storage tanks, and sealing rings arranged between the sliding sleeves and the fluid transition pipes; the water storage tanks are arranged between the rotatable shaft heads and the sealing rings. According to the fluid transition water sealing device, water protection layers can be formed between the sliding sleeves and the fluid transition pipes and can continuously drain water to one side of each rotatable shaft head, to effectively prevent mud from entering the sealing device; furthermore, cooling can be provided for the relative rotation motion between the sliding sleeves and the fluid transition pipes, and wear between the sliding sleeves and the fluid transition pipes can be effectively relieved; the fluid transition water sealing device is applicable to sealing for transition of all types of fluid.

The invention discloses a spring force storage type air channel valve for sealing. The spring force storage type air channel valve comprises a blocking cover (3), a lead screw, a seal ring and a motor (11) and further comprises a body (1), a fixed frame (2), a bearing bush, a ball head, a blocking ring, a pull rod and a compressed spring. During working, the fixed frame (2) is fixed to the body (1), and the lead screw stretches out or retracts relative to the body (1). Under the stretching-out working condition, the lead screw stretches out and pushes the blocking cover (3) downwards, so that the blocking cover (3) does not press an air channel inlet tightly any longer, and an air channel is opened. Under the retracting working condition, when the lead screw retracts to the in-place position, the seal ring makes contact with the air channel inlet and does not move any longer, meanwhile, the body (1) sends a in-place closing signal, after an external circuit receives the in-place closing signal, delaying is conducted for the specified duration, and electricity is turned off. After electricity of the external circuit is turned off, the lead screw stops moving, and at the moment, the compressed spring is in the force storage state and provides sealing compressed force all the time. The spring force storage type air channel valve has the characteristics that workload is low, the sealing compressed force can be controlled, the function is reliable, and process control is easy.