46results about How to "Leak won't" patented technology

The invention relates to an enhanced MASK code method for resisting DES (data encryption standard) power consumption attack, comprising the steps as follows: step 1, realizing two rounds of DES (data encryption standard) calculations with a pipeline operation mode, realizing a calculating circuit by means of a first calculating circuit and a second calculating circuit which are mutually independent and isolated; step 2, realizing the DES (data encryption standard) calculation processes from the third round to the fourteenth round by means of a random positioning logical operation mode; step 3, realizing the last two rounds of DES (data encryption standard) calculations by means of a pipeline operation mode, and realizing the calculating circuit by means of a third calculating circuit and a fourth calculating circuit which are mutually independent and isolated, wherein each round of the DES (data encryption standard) calculations in step 1 to 3 is calculated with a MASK code method. The method provided by the invention not only reduces the design area of the chip, but also completely solves the problem in the prior art in which the two adjacent rounds of the MASK code solutions have a Hamming distance leakage, and keeps the sensitive information between wheels from leakage, and simultaneously keeps the Hamming distance and other sensitive information between two adjacentwheels from leakage, and effectively resists the power consumption attack.

The invention discloses a sealing gas sampling apparatus, including an adapter, a first electromagnetic valve, a second electromagnetic valve, a gas container, a vent valve and a minisize high-pressure air pump. One end of the adapter is provided with a connecting column and a convex column and the other end is provided with an air inlet and an air outlet. The air outlet of the adapter is connected with the inlet of the first electromagnetic valve. The outlet of the gas container is connected with the inlet of the minisize high-pressure air pump. The outlet of the minisize high-pressure air pump is respectively connected with the inlet of the second electromagnetic valve and the vent valve via a tee joint. The outlet of the second electromagnetic valve is connected with the air inlet of the adapter. An interface is arranged on the gas container. The sealing gas sampling apparatus can sample the sealing gas. The gas passing through the sampling and analysis instrument can be charged to the electrical apparatus or the gas tank timely to realize the effective sampling of the measured gas, thus benefiting environmental protection and avoiding the economic loss.

The invention discloses a self-balancing stop valve with a piston type valve core and a hidden rod, which comprises a valve cover (7) and a valve body (33) provided with a front valve cavity (31) and a rear valve cavity (32), wherein a passage (34) is formed between the front valve cavity (31) and the rear valve cavity (32). Guide sleeves (5) in vertical sealed sliding connection and the piston type valve core (2) in which a cavity is formed are arranged in the rear valve cavity (32); the bottom surface (18) of the piston type valve core (2) is used for blocking the passage (34); the guide sleeves (5) are hermetically and fixedly connected with the valve body (33); a lifting component is connected with the piston type valve core (2); the valve cover (7) is hermetically connected with the valve body (33); the inner surfaces of the piston type valve core (2), the guide sleeve (5) and the valve cover (7) encircle an upper chamber (21); and the upper chamber (21) is communicated with the rear valve cavity (32) through a guide pipe component (13). The self-balancing stop valve has the characteristic of remarkable energy-saving effect.

The invention discloses a leakage-free seal-ring-free two-way controllable magnetorheological damper which comprises a cylinder body, a piston and a piston rod, wherein the left end and the right end of the cylinder body are respectively connected with a left corrugated pipe and a right corrugated pipe hermetically, the left corrugated pipe is hermetically connected with a left end cover, the left end cover and a right end cover are hermetically connected with the piston rod, the left corrugated pipe and the right corrugated pipe are hermetically connected with the left end cover and the right end cover, and the centers of the left end cover and the right end cover are hermetically connected with the piston rod; a communicating pipe is arranged on the cylinder body; a left circular coil and a right circular coil are fixedly connected inside the cylinder body, and gaps between the inner holes of the circular coils and the piston rod form a damping channel; and a left one-way valve and a right one-way valve are arranged on the communicating pipe, and the piston rod is located between the left one-way valve and the right one-way valve. In the invention, the corrugated pipes are used as sealing elements, leakage caused by wearing between the piston rod and a seal ring is avoided, and the corrugated pipes do not bear working pressure. The damper can not leak within the service life of the corrugated pipes.

The invention provides a drive structure of a walking type transplanter, capable of simplifying the drive structure in a gear box and shifting a running drive system and a transplantation drive system. In the drive structure of the walking type transplanter, a first drive axle (33) into which the power of an engine (E) is input and a second drive axle (37) for branching the power from the first drive axle (33) to the running drive system and the transplantation drive system is set on a gear box (M) and a gear shifting part (39) is set across the first drive axle (33) and a second drive axle (37) and the gear shifting part (39) shifts the power transferred into the running drive system and the transplantation drive system.

The invention disclose a liquid flow battery unit which comprises a first battery box and a second battery box, an ion exchange membrane, a first porous electrode and a second porous electrode, and a first electrode plate and a second electrode plate, wherein a first side of the first battery box and a first side of the second battery box are combined with each other through bonding by heating, and the first side of the first battery box is provided with an annular protrusion edge; the ion exchange membrane is fixed in the protrusion edge; the first porous electrode and the second porous electrode at both sides of the ion exchange membrane are respectively arranged in the first battery box and the second battery box; The first plate electrode and the second plate electrode at a second side of the ion exchange membrane are respectively arranged in the first battery box and the second battery box, and respectively in contact with the first porous electrode and the second porous electrode. The invention also provides a battery stack comprising the liquid flow battery unit, and a manufacturing method of the liquid flow battery unit and the battery stack.

The invention relates to a mercury-leakage-resistant thermometer which is used for daily life and medical service. The common thermometer has the defects that the mercury bulb part of the thermometer is extremely easy to smash; the mercury after being smashed is not easy to collect and clean up; the mercury which remains in a room is slowly and completely volatilized in the air; and the mercury stream is exactly the main reason of mercurialism. Because the common thermometer influences the health of people because of the reason of the mercurialism, particularly the health and intelligence development of children, parents are increasingly worried about the problem. The mercury-leakage-resistant thermometer provided by the invention solves the problem that the common thermometer influences the health and intelligence development of the children. The mercury-leakage-resistant thermometer provided by the invention is characterized in that the mercury bulb part of the thermometer is tightly wrapped by metals, thereby protecting the mercury bulb part which is the easiest smashed part of the thermometer and avoiding the mercury from leaking after the mercury bulb is smashed. If the other parts are smashed, the mercury does not leak because the mercury column is thin. Simultaneously, the heat conduction of the mercury bulb part is not influenced, and the indication of the part with scales is not influenced.

A fuel supply system for an outboard marine engine includes a vapor separator (28) having a uni-directional vapor vent device (36) for preventing fuel leakage when the engine (12) is tipped on its side. The vapor separator (28) includes an enclosed interior chamber (50) which is filled with liquid fuel by a suction pump. A separate, high pressure pump transfers the liquid fuel from the interior chamber (50) to a fuel injection system (32) of the engine (12). The vapor vent device (36) includes a generally tubular casing having an enclosed top end permeated by an escape passage (84), and a float (94) slidably disposed within the casing (82) for movement toward and away from sealing engagement with the escape passage (84).

The invention discloses a heart valve steady-state leakage test device and a use method thereof, which belongs to the technical field of medical instrument inspection and comprises a water storage barrel and a water storage barrel which are communicated through a pipeline, and a test part tool for mounting a heart valve prosthesis is arranged on the pipeline so as to enable the heart valve prosthesis to be communicated with the pipeline. A front-end pressure sensor is installed on the front side of the test part tool, a rear-end pressure sensor is installed on the rear side of the test part tool, the water storage barrel is connected with an air source, and the water storage barrel is provided with a weighing device for weighing the mass change of liquid in the water storage barrel. The working method comprises the steps of calibrating, mounting the test part and measuring the static leakage rate. The technical scheme provided by the embodiment of the invention is used for carrying outthe steady-state leakage test of the artificial heart valve, is convenient to operate, meets standard requirements, and is accurate and reliable in result.

The invention discloses a anti-leakage test method for an anti-corrosion tank, which comprises the following steps: drilling, heating, vacuuming, and testing with an ethanol solution. The concept is ingenious, the operation is simple, and one person can complete the test. The method is special and can accurately judge anti-corrosion. Whether there is a leakage point in the layer, and at the same time adjust the limit stretch of the anti-corrosion layer to make it more suitable for the impact and corrosion of acid-base solution, and extend the service life by 60%.

The invention discloses a liner for a solar heat collective header and belongs to the technical field of solar water heaters. The liner comprises a cooper tube liner and a plurality of heat exchange modules, wherein yarn ends used for being connected with the cooper tube liner are fixed to the two ends of the cooper tube liner respectively; the heat exchange modules sleeve and are fixed to the cooper tube liner and are also provided with heat collective tube cooper tube fixing holes respectively; an axis of each heat collective tube cooper tube fixing hole is perpendicular to that of the cooper tube liner; a plurality of heat exchange modules sleeve and are fixed to the cooper tube liner at a certain interval; and the axes of the heat collective tube cooper tube fixing holes of all the heat exchange modules after being sleeved and fixed are mutually parallel and arranged in a same plane. According to the liner, with addition of the heat exchange modules, opening brazing does not need to be carried out on the cooper tube liner, and the problem of leakage caused by opening brazing is prevented; meanwhile, as opening does not need to be carried out on the cooper tube liner, the thickness of the wall of the cooper tube liner can be reduced, the cost is saved, the pressure bearing capacity is improved, connection of the heat exchange modules and the cooper tube liner is firm, the contact is tight, and the contact area is large; and with adoption of gapless heat conduction, the heat exchange efficiency is high.

Provided is a pressure regulator comprising an adiabatic compression preventing mechanism and a pressure indicating mechanism. A pressure regulator comprises an adiabatic compression preventing mechanism (B) and a pressure indicating mechanism (C). The adiabatic compression preventing mechanism (B) comprises: a partitioning member (11) slidably disposed on a stepped part (10) at a primary-side passage (1) of the pressure regulator (A), the partitioning member (11) including a central small flow passage (11a) and a circumferential large flow passage (11f), the large flow passage being blocked when the partitioning member (11) makes contact with the stepped part (10), the partitioning member (11) further including a connection passage (17) formed at a downstream side of an upstream-side end surface (11d) so as to connect the small flow passage and the large flow passage; and a first spring (12) urging the partitioning member toward an upstream side in a gas flow direction. The pressure indicating mechanism (C) comprises: a cylindrical part (31) in which a first relief chamber (31a) having a small diameter and a second relief chamber (32b) having a large diameter are formed with an opening (31d) crossing the second relief chamber; a sliding member (32) including an indicating part (32a) and a pressure receiving part (32b), the sliding member (32) being slidably inserted in the cylindrical part (31); an O-ring (33) disposed on an end part of the first relief chamber; and a second spring (35) urging the sliding member toward the pressure receiving part.

The invention relates to a communication encryption method and system. Each door has a fixed identity mark mk, this identity exists in the production of each door, and the mk is an only communication key to each door. The user can set an own (user 1) private password mk1, the exclusive or operation between mk1 and mk is carried out to get mk2, and the mk2 is saved to a server. Then the user 1 sets a key mk1' for other general administrators (user 2), the exclusive or operation between mk1 and mk2 is carried out to obtain mk, the exclusive or operation between mk and mk1' is carried out to obtain mk2', and mk2' is stored in the server. The addition mode of each new user is identical, and the key to each user' room is unique. When the user needs to open the door, the user sends their own private password mk1 to the server, the server combines the user's mk1 and mk2 stored in the server to get the final key mk, and the mk is destroyed immediately after use. Therefore, mk cannot be leaked when the user' key is leaked or the server is broken by the hacker.

The invention belongs to the field of sludge treatment equipment, and discloses an angle-adjustable pipeline connecting structure. The angle-adjustable pipeline connecting structure comprises a valvebody, a valve ball, a first flange and a second flange; the inner side of one end of the valve body is provided with a connecting inner cavity, and the end is provided with a port with the small innerside and the large outer side; the valve body is further provided with a first connecting portion; the first flange is provided with a second connecting portion; the second connecting portion is connected with the first connecting portion through a fixing part; the valve ball is located in the connecting inner cavity; and the second flange penetrates through the first flange and the port througha water supply pipeline to be connected with the valve ball. The invention further discloses an installing method of the pipeline connecting structure and a long-line pipeline with the pipeline connecting structure. Therefore, connection of the long-line pipeline can be applied to the high-pressure work condition, and the pipeline angle steering problem can be solved.