104results about How to "Improve sealing effect" patented technology

The invention discloses a hidden pipe connector for modifying saline-alkali soil, and belongs to the technical field of engineering drainage. The connector comprises an inner sleeve pipe. The outer wall center position of the inner sleeve pipe is provided with a connection part. The outer wall of the connection part is provided with an outer sleeve pipe. A hollow cavity is formed between the inner sleeve pipe and the outer sleeve pipe. A hidden pipe is inserted in the hollow cavity. Through the arrangement of the outer sleeve pipe and the inner sleeve pipe the hollow cavity is formed. One end of the hidden pipe is plugged in the hollow cavity. At the same time an exhaust device is employed to empty the air in the hollow cavity. When the hidden pipe has a potential to be plugged out, a vacuum condition is formed between the inner sleeve pipe and the outer sleeve pipe, thus preventing the hidden pipe from being plugged out even further, and ensuring the enough connection strength of the hidden pipe connector. The connector has the advantages of being simple in structure, reasonable in design, strong in practicality, and convenient in operation. The connection strength of the hidden pipe connector is high, the sealing property is good. The service life is long and the market promotion prospect is tremendous.

The invention discloses an oil filter pipe connector for a transformer and relates to the technical field of pipe connecting devices. The connector comprises a male connector and a female connector, wherein the male connector comprises a first connecting tube, and a sealing ring is fixed at the end of the outer wall of the first connecting tube; the female connector comprises a second connecting tube provided with two openings, two pairs of connecting plates are arranged on the pipe walls outside the openings, two locking rods are respectively in shaft connection with one pair of connecting plates, one ends of the locking rods are located in the openings of the second connecting tube, the other ends of the locking rods are located outside the second connecting tube, an annular groove is formed in the inner wall, on the right of the openings, of the second connecting tube, a sealing rubber ring is fixed in the annular groove, and the inner diameter of the sealing rubber ring is slightly larger than the outer diameter of the sealing ring. By the oil filter pipe connector, two oil filter pipes can be connected conveniently and fast, a good sealed connection effect is achieved, and transformer oil leakage is avoided.

The invention relates to the field of pressure measurement of a pipe and more specifically, relates to a sealing device for end parts of a pipe. The sealing device includes a sealing-end sealing body and an air-inlet-end sealing body, which are respectively installed at the end parts at the two ends of the pipe. One end of the sealing-end sealing body is provided with an opening and the two ends of the air-inlet-end sealing body are provided with openings. Both the sealing-end sealing body and the air-inlet-end sealing body are hollow cavities inside. Sealing rings and spring sleeve clamping tools which allow the pipe to penetrate are installed in the hollow cavities. Clamping wrenches contacting with the spring sleeve clamping tools are installed at the outer sides of the sealing-end sealing body and the air-inlet-end sealing body. The spring sleeve clamping tools can be squeezed through wrenching the clamping wrenches and deformed so as to lock the pipe which penetrates the spring sleeve clamping tools. End-part sealing heads are arranged at one opening end of the sealing-end sealing body and one opening end of the air-inlet-end sealing body. After the sealing device for the end parts of the pipe is assembled, the two ends of the pipe are inserted directly into the sealing-end sealing body and the air-inlet-end sealing body and the clamping wrenches are wrenched so that installation is completed. The sealing device is convenient to install and the installation is high in speed and efficiency.

The invention discloses a composite fireproof thermal insulation wall body. The composite fireproof thermal insulation wall body is formed by splicing a plurality of orderly and evenly arranged fabricated composite wall bodiess, each fabricated composite wall body comprises an outer frame and an inner function distribution layer, wherein the each inner function distribution layer is arranged in the corresponding outer frame and closely attached to the corresponding outer frame; each inner function distribution layer sequentially comprises a heat insulation layer, a protective layer, an anti-corrosion damp-proof layer and a fireproof layer, each outer frame comprises two outer wall panels and a bearing wall body, the two outer wall panels are fixed to two sides of the bearing wall body respectively, the left side of the bearing wall body is the inner side of the building wall body, and the right side of the bearing wall body is the outer side of the building wall body; and connecting steel pieces are symmetrically fixed to the four corners of the bearing wall body, the connecting steel pieces penetrate through the bearing wall body and connect and fix the outer side of the buildingwall body and an outer wall panel on the inner side of the building wall body, and the outer wall panel is a decorative layer of the composite fireproof heat preservation wall body.

The invention provides a pLugging device for a shieLd tunneL. After the pLugging device carries out pLugging, a sensor in the pLugging device detects a Leakage point, the Leakage point is repaired intime, and therefore the seaLing effect of the pLugging device on the shieLd tunneL is improved. According to the pLugging device, the Leakage point can be searched for, compensation is carried out intime aiming at the Leakage point, the fit degree of the pLugging device and the tunneL is increased, and the pLugging effect is improved.

The invention provides a vanadium cell stack structure which comprises welding flux and a welding groove which are located on the edge of a liquid flow frame, and a positive electrode liquid flow frame and a negative electrode liquid flow frame which are correspondingly arranged are permanently sealed through the welding flux and the welding groove. The liquid inlet and outlet plate unit with an integrated structure is arranged, so that the structural design of an electrolyte pipeline is more flexible, the preparation process difficulty is reduced, the integration degree is improved and the application is expanded; an accommodating space is formed in the liquid inlet and outlet plate unit to embed the collector plate connecting part, so that the liquid inlet and outlet plate unit is hermetically connected with the liquid flow frame; the liquid flow frame is provided with liquid flow frame convex ribs, so that the liquid flow frame is in self-sealing connection with the diaphragm; a sealing ring groove with a sealing ring is formed in the liquid flow frame, so that the sealing connection effect of the liquid flow frame is enhanced; the pressure relief groove is formed, pressure is reduced, and the liquid leakage risk is reduced; the conductive composite material bipolar plate and the liquid flow frame are connected through laser welding; and therefore, the vanadium cell stack structure provided by the invention is stable, reliable, highly integrated, easy to manufacture and low in processing cost.

The invention belongs to the technical field of shield tunnel waterproofing, and particularly relates to a shield tunnel sealing gasket waterproof performance testing device which comprises a fixing unit and a pressurizing unit. The fixing unit comprises an arc-shaped block and a control mechanism, an arc-shaped through groove is formed in the arc-shaped block, and a first arc-shaped strip is slidably connected into one side of the arc-shaped through groove; a second arc-shaped strip is slidably connected into the other side; a first arc-shaped clamping block is arranged on the first arc-shaped strip, and a second arc-shaped clamping block is arranged on the second arc-shaped strip; the control mechanism is used for controlling the pressure intensity in the arc-shaped through groove; the pressurizing unit comprises a water injection mechanism and a fixing block, and the fixing block can be attached to the first arc-shaped clamping block and the second arc-shaped clamping block in a sealed mode. A cavity is formed in the fixing block and can be opposite to the joint of the first arc-shaped clamping block and the second arc-shaped clamping block. By using the scheme, the environment of the sealing gasket can be well simulated, and the accuracy of a test result is effectively improved.