75results about How to "Avoid stress shocks" patented technology

A fluid filter system has a manifold having a fluid inlet with an inlet stop and a fluid outlet with an outlet stop and a cartridge seat. A cartridge is separable from the manifold and adapted to mount and dismount in the manifold. The cartridge has a filter housing containing a filter for filtering fluid, and an integral closure member having a first level and a second level. A radial inlet port is on a face of the first level of the closure member and an axial outlet port is on top of the second level of the closure member. A first boss on the closure member opens the inlet stop when the cartridge is mounted in the manifold. A second boss on the closure member is disposed to open the outlet stop when the cartridge is mounted in the manifold. The bosses engage the stops sequentially.

The invention discloses an air source heat pump system which can unintermittently supply heat under the working condition of defrosting and relates to an air source heat pump system. The system solves the problems that the prior defrosting mode has drastic change of air suction pressure, stops heat supply and blows cold wind indoors in the defrosting process. The outlet end of a compressor is communicated with a first port of a four-way reversing valve; a second port of the four-way reversing valve is communicated with the inlet end of an indoor machine; the outlet end of the indoor machine is respectively communicated with one end of a first bypass shunt circuit, one end of a second bypass shunt circuit and one end of a third bypass shunt circuit through a throttling mechanism; the other end of the first bypass shunt circuit, the other end of the second bypass shunt circuit and the other end of the third bypass shunt circuit are communicated with a third port of the four-way reversing valve; a fourth port is communicated with the inlet end of a gas-liquid separator; and the outlet end of the gas-liquid separator is communicated with the inlet end of the compressor. The system realizes unintermittent heat supply in the defrosting process, simultaneously reduces drastic change of air suction pressure of the compressor and is more stable in the conversion process of heat supply and defrosting.

The invention discloses a superstructure rotary hydraulic control system, which comprises a first direction control valve and a variable backpressure element, wherein the direction control valve is arranged between a rotating motor and system pressure and system oil return oil circuits, the variable backpressure element is arranged between an oil return port of the first direction control valve and the system oil return oil circuit, and the first direction control valve is in one-way communication with the variable backpressure element. Compared with the prior art, the superstructure rotary hydraulic control system has the advantages that when the moment of resistance is higher in rate of change under the operating conditions of rotation starting and stopping, oil return pressure of the variable backpressure element can be increased by adjusting the variable backpressure element, and accordingly system rigidity can be improved to overcome pressure impact under the operating conditions of starting and stopping, and improvement of rotating performance and overall stability is guaranteed reliably. Meanwhile, since the system oil return oil circuit is provided with a fixed backpressure constantly, system rigidity is improved correspondingly, and high impact resistance can be achieved in the whole superstructure rotation process. The invention further provides a crane with the superstructure rotating hydraulic control system.

The invention provides a compact type fully hydraulic walking pile-up valve comprising a valve body. The valve body is internally provided with a high pressure selector valve formed by combining a threaded check valve base, a steel ball and a valve hole in the valve body. A first one-way throttle valve is arranged in the valve body and on the left side of the high pressure selector valve and a second one-way throttle valve is arranged in the valve body and on the right side of the high pressure selector valve. A balance valve is installed in a balance valve cavity of the valve body. A two-stage buffer overload valve comprising a first buffer overload valve and a second buffer overload valve is arranged on a main oil way in the valve body. A large-opening diameter oil supplementing valve formed by combining two sets of planar large-drift diameter check valves is installed in a valve cavity in the valve body and above the balance valve. An oil path switching valve is installed in the uppermost switching valve cavity of the valve body. The compact type fully hydraulic walking pile-up valve can effectively solve the problems such as great hydraulic shock, air suction of oil liquid and high noise in a braking process of fully hydraulic wheel excavators and loaders, has the advantages of compact structure, small size and high integration degree and is especially suitable for moving apparatuses.

The invention provides an upper roll balancing device and a hydraulic control system. The hydraulic control system comprises a system oil inlet, a system oil return port, a system oil drainage port, an upper roll balancing cylinder, a first electro-hydraulic directional valve, a second electro-hydraulic directional valve, a first one-way throttle valve, a second one-way throttle valve, a hydraulic control one-way valve, a first electromagnetic ball valve, a second electromagnetic ball valve and an overflow valve, wherein the first electro-hydraulic directional valve can be positioned at a left position, a middle position and a right position to control oil in the hydraulic control system to flow into a rod-including cavity and a rodless cavity of the upper roll balancing cylinder or be isolated from the rod-including cavity and the rodless cavity; the second electro-hydraulic directional valve can be positioned at a left position, a middle position and a right position to control oil in the hydraulic control system to flow into the rod-including cavity and the rodless cavity of the upper roll balancing cylinder or be communicated with the rod-including cavity and the rodless cavity; the hydraulic control one-way valve is communicated to the rod-including cavity through a pipeline; the first electromagnetic ball valve is connected in parallel to the hydraulic control one-way valve, and can be used for controlling the hydraulic control one-way valve to be opened; the second electromagnetic ball valve is communicated to the rod-including cavity through a pipeline, and is connected with the overflow valve; and the overflow valve is connected to the system oil drainage port.

The invention discloses a pressure safety valve. The safety valve comprises a valve body, wherein a first chamber is formed by a first one-way valve core and the front part of an inner hole of the valve body in a surrounding manner, a second chamber is formed by the first one-way valve core, the front end of a push rod and the inner hole of the valve body in a surrounding manner, third chambers are formed by the middle part of the push rod and the inner hole of the valve body in a surrounding manner, and a fourth chamber is formed by the back end of the push rod and the back part of the inner hole of the valve body in a surrounding manner; second oil holes are formed in the valve body and in positions corresponding to the first one-way valve core, third oil holes are formed in the valve body and in positions corresponding to the front part of the push rod, fourth oil holes are formed in the valve body and in positions corresponding to the third chambers, and a fifth oil hole is formed in the valve body and in a position corresponding to the fourth chamber; the second oil holes and the fourth oil holes are connected with an oil tank, the third oil holes are connected to a hydraulic system in parallel, and the fifth oil hole is an oil outlet; pressure maintenance structures which are used for maintaining the balanced pressure of the push rod are arranged in the third chambers and the fourth chamber. The safety valve disclosed by the invention can prevent pressure impact, prevent equipment from being damaged and improve the security of the equipment.

The invention discloses a lead frame structure and a surface sticking semiconductor packaging structure formed by the same. The lead frame comprises a first pin part, a bending part and a second pin part, wherein the bending part is formed by extending a first end part of the first pin part; the second pin part is a square plate body formed by extending a neck part of the bending part, and a square convex part is formed on the square plate body so that a chip can be welded and fixed between the square convex parts of two lead frames. The surface sticking semiconductor packaging structure comprises a chip, lead frames and a packaging body, wherein the packaging body is coated on the chip as well as the second pin part, the bending part and the first end part of the each of two lead frames so as to finish the packaging of the surface sticking semiconductor, improve the reliability of the surface sticking semiconductor and enhance the bearing power of the surface sticking semiconductor.

The invention relates to a valve device (1) for controlling media flows of any type by means of at least one valve control piston (33), which is guided in a longitudinally movable manner in a valve housing (3) and which controls a media connection between at least two media connection points (9, 11) in the valve housing (3), of which at least one media connection point is a pressure supply inlet (P) and at least one other media connection point is a load outlet (A), wherein the valve control piston (33) is guided in the valve housing (3) with pressure equalization by means of at least one equalizing apparatus (35) at least with respect to the media pressure at the respective pressure supply inlet (P).

The invention discloses efficient solar large assembly vertical stacker crane equipment which comprises a turnover conveying line, a displacement gripper mechanism, short-edge vertical trolley mechanisms, assembly temporary-storage frames and a protective net. The right side of the turnover conveying line is provided with the displacement gripper mechanism in a butt joint mode; the displacement gripper mechanism is provided with three stations used for being responsible for displacement grippers of gripping operation of different strokes; a row of short-edge vertical trolley mechanisms are arranged on the front side of the displacement gripper mechanism in a butt joint mode; the number of the short-edge vertical trolley mechanisms is three, four or five; the assembly temporary-storage frames are arranged in each set at intervals; and the protective net is arranged on the front side walls of the short-edge vertical trolley mechanisms. By means of the mode, through the advanced horizontal turnover and standing technology and the corresponding displacement grippers, short-edge vertical turnover is carried out, and short edges are placed in short-edge vertical trolley stacking positions, so that the purpose of rapid and accurate stacking is achieved.

The invention relates to a device (1) for filling containers, comprising a storage container (2) in which a fluid to be bottled in the containers can be accommodated, comprising a filling device (8) filling the fluid into the containers (10), and comprising a transport line (4) by means of which the fluid is transported form the storage container (2) to the filling device (8). According to the invention, a valve device (6) is disposed in the transport line (4) between the storage container (2) and the filling device (8), said valve device changing automatically between an open and a closed state depending on a flow velocity of the fluid within the transport line (4).

A method of operating a gas turbine, a device for regulating the starting and / or the operation of a gas turbine and a power plant are provided. The method includes continuously extracting fuel from a fuel network, and combusting, in at least one combustion chamber of a gas turbine, the fuel by adding combustion air. For an increase of a fuel stream supplied to the at least one combustion chamber, a fuel volume is extracted from a fuel store and supplied to the fuel still to be supplied to the at least one combustion chamber.

The invention relates to a valve apparatus having a housing (100), which housing has a first port (102), which can be connected to a tank (200), and a second port (106), having a closing element (110) which is provided in the housing and which can be placed into an open position, in which a fluid connection is produced between the first port and second port, and which can be placed into a closed position, in which the first and second ports are separated from one another in fluid-tight fashion, having a first (120) and a second (130) seal arrangement between closing element and housing, wherein the first and the second seal arrangement (120, 130) are spaced apart from one another and wherein each seal arrangement interacts with a corresponding seat (126, 136). To create a valve device for the aseptic transport of filling material, it is proposed that a chamber (140) be provided which, in the closed position, is delimited by the seal arrangements, the closing element and the housing, and that a reservoir (142) is provided which can be connected to the chamber and which serves to accommodate a bactericidal fluid, and that the chamber (140) and the reservoir (142) are adapted to form a germ barrier that is created in the closed position with the bactericidal fluid. The invention also relates to an arrangement having a valve apparatus of said type and to a method for operating an arrangement.

The invention relates to the technical field of porcelain insulators, and discloses a high-mountain windproof porcelain insulator, which solves the problem that the use performance of a common porcelain insulator is easily reduced due to long-time wind blowing in the process of using the porcelain insulator in a high mountain. The porcelain insulator comprises an insulator body, bearings are symmetrically and rotatably arranged on the insulator body, and telescopic rods are symmetrically installed on the bearings, a wind shield is installed at one end of one telescopic rod, vertically-arranged connecting rods are installed at one end of the other telescopic rod, the connecting rods are symmetrically installed on a driver, a wing plate is installed at one end of the driver, a positioner is installed at the other end of the driver, and brush frames are symmetrically installed on the positioner. According to the invention, through cooperative use of the wind shield, the wing plates, the bearings and the like, the wind shield can be located on the front wind surface through the wing plates when there is wind, and the wind is blocked through the wind shield so that the insulator body on the inner side is well protected.