44results about How to "Small discharge" patented technology

A piezoelectric pump having a first opening in a center portion of a pump body, and a second opening apart from the center. An outer peripheral portion of a metal diaphragm is fixed to the pump body, and a piezoelectric element having a size that covers the first opening and does not cover the second opening is bonded to a back center portion of the diaphragm. By applying a voltage near the resonance frequency to the piezoelectric element, a portion of the diaphragm opposing the first opening and a portion of the diaphragm opposing the second opening are bent in opposite directions so that fluid is drawn in from one of the first opening and the second opening and is discharged from the other opening. Such a piezoelectric pump can increase the discharging pressure, and can reliably discharge the fluid even under a condition where the pressure on the discharging side is high.

An ink jet recording head is provided with one heat generating member in each of ink flow paths, and the discharge port thereof is arranged on the extended line extending in the normal direction from the center of the main surface of the heat generating member to the surface of the substrate. Then, on the surface of the substrate, non-bubbling area is provided on the center within the projected area having the discharge port projected thereon. Bubble brought to the boil by the heat generating member pushes out ink from the discharge port by the pressure exerted by the bubble, while being communicated with the outside. With the structure thus arranged, it is made possible to enhance the precision of discharge direction of the liquid droplet discharged from the discharge port.

A partial optical fiber discharge detecting system comprises a light source, an acoustic-optic modulation device, a sensing light path and a demodulating system. Frequency shifting and delaying are carried out on light emitted by the light source through the acoustic-optic modulation device, and only two paths of light with the same optical path can interfere in the sensing light path and a reference light path. When partial discharge signals occur outside, the generated sound waves act on the sensing light path, the phase position of the interference signals changes, and the related information (intensity, position and the like) of outside partial discharge signals can be obtained by demodulating the variable quantity. Compared with traditional electromagnetic sensing and piezoelectric sensing, optical fiber sensing is insulated from electromagnetism essentially, the sensing optical fiber can be arranged in insulating oil of a transformer, the sensitivity for detecting the partial discharge signals is further improved, multiplexing can be formed easily, and the partial discharge signals can be precisely positioned.

The invention provides an automobile transportation mode control device, which comprises an automobile body controller, a transportation mode switch, a relay, an instrument, and controllers with static current, such as an air conditioner controller and a lamp controller. The transportation mode switch totally has two states including a switch switch-off state and a switch switch-on state. When the transportation mode switch is switched on, the automobile body controller detects a high level, the current mode is judged to be a common mode, when the output end of the control relay is in a low level state, the relay does not suck, and the whole automobile normally works; when the transportation mode switch is switched off, the automobile body controller cannot detect the high level, the current mode is judged to be a transportation mode, if the whole automobile network is in a wakening state, or a key is in a non-off gear, the automobile body controller controls to suck the relay, and the whole automobile normally works; after the whole automobile network is in a dormancy state, or the whole automobile is in an off gear for more than 10s, the automobile body controller controls to output a low level, the relay is switched off, and the static current consumption of the whole automobile is reduced. The control device provided by the invention has the advantages that the active management on a vehicle-mounted controller in an automobile transportation process can be realized, the static current consumption of the automobile in the transportation process is reduced, the storage battery discharging quantity is obviously reduced, and the starting failure risk after the automobile achieves a transportation destination is reduced.

The invention discloses a temperature control system and method for optimizing the satellite energy use efficiency. The system is composed of a power telemetering acquisition module, a power supply controller, a temperature controller, a heating loop, a temperature sensor and a remote control command unit. The power telemetering acquisition module collects state information. The remote control command unit is used for receiving remote control data sent by the ground and sending a first remote control command and a second remote control command. The power supply controller is used for calculating the residual energy of a satellite. The temperature sensor is used for collecting the temperature of a control point. The temperature controller controls connection or disconnection of the heatingloop according to the residual energy of a satellite, the temperature of the control point, a temperature control threshold parameter and a temperature control strategy. The heating loop is used for receiving controlling of the temperature controller and providing heat or stopping heat supply for a controlled temperature area. According to the invention, the power generating capacity of the solarcell array is used fully; the power wasting is reduced; the discharging electricity amount of the storage battery in a shadow area is reduced; and the energy utilization efficiency of the satellite isincreased effectively.

This invention relates to a radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and / or speed-sensitive element for temperature-dependent control of the coolant flow, where at least one impeller vane (5) and / or the directing device (4) is configured as a speed-sensitive element. In order to increase efficiency, the proposal is put forward that the impeller vanes (5) should be elastically deformable by Coriolis forces of the coolant flow, the discharge angles (alpha), which are preferably defined between impeller vanes (5) and impeller tangential planes (epsi), decreasing with an increase in speed.

The invention relates to a long-service-life high-specific-energy maintenance-free starting lead-acid storage battery and a production method thereof. According to the battery, lead plasters coated atthe upper portion and the lower portion of a grid of at least one of a positive electrode plate and a negative electrode plate are different, and the conductivity or the utilization rate of the leadplaster at the lower portion of the grid is superior to that of the lead plaster at the upper portion of the grid. According to the invention, the upper portion and the lower portion of an electrode plate adopt different formulas and are respectively coated and filled, wherein the acid content of the lead plaster at the lower portion is different so as to reduce that the apparent density of the lead plaster or the conductive substance content of the lead plaster at the lower portion is different so as to improve the utilization rate, so that the problem of low utilization rate of the active substance at the lower portion is effectively improved, and the capacity of the battery is improved; the internal resistance of the lower portion is reduced, and the utilization rate is improved, so that the problem of high proportion of upper discharge capacity is slowed down, wherein the upper discharge capacity of the electrode plate is reduced and the discharge rate is reduced under the condition of the same discharge capacity, so that the softening and falling of the active substance are reduced, and the service life of the battery is prolonged; and under the condition of the same paste coating amount, the capacity, the low-temperature discharge performance and the cycle durability of the prepared battery are improved.

A radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and / or speed-sensitive element for temperature-dependent control of the coolant flow, where at least one impeller vane (5) and / or the directing device (4) is configured as a speed-sensitive element. In order to increase efficiency, the proposal is put forward that the impeller vanes (5) should be elastically deformable by Coriolis forces of the coolant flow, the discharge angles (alpha), which are preferably defined between impeller vanes (5) and impeller tangential planes (epsilon), decreasing with an increase in speed.

The invention relates to smoke-suppressing flame-retardant sound-insulating PVC (polyvinyl chloride) and a preparation method thereof. The smoke-suppressing flame-retardant sound-insulating PVC comprises the following components in parts by mass: 100 parts of PVC, 3-60 parts of plasticizer, 0.1-10 parts of heat stabilizer, 1-80 parts of flame retardant, 0.1-1 part of smoke suppressor, 100-800 parts of iron oxide powder, 4-30 parts of calcium carbonate and 0.1-5 parts of carbon black; the oxygen index of the product is 38-39%, and the self-extinguishing property is (UL-94)V-0 level; the combustion smoking amount is low, can be up to 7-9%, and is greatly reduced in comparison with the smoking amount (33-54%) in the prior art; the tensile strength is 10-30 MPa, the elongation at break is 270-300%, and the freezing resistance can ensure no cracking at -30 DEG C; all the components perform synergistic action to greatly increase the properties of the product; the product is low in cost, low in consumption, remarkable in flame-retardant and smoke-suppressing effect, small in toxic gas discharge amount during combustion and low in price; and the product has low temperature resistance and ultraviolet resistance, generates no corrosive gas, is low in moisture absorptivity and favorable in sound-insulating effect, and can be widely produced and continually used instead of the existing material.

The invention discloses a power supply device for an APM rapid transit system. The power supply device comprises a power supply rail device and a grounded rail device. The power supply rail device comprises a power supply rail and an accessory thereof. The power supply rail comprises a positive pole power supply rail body and a negative pole power supply rail body. The power supply rail device is connected with a positive pole and a negative pole of a direct-current power supply system through power feeders, and continuous collecting currents are provided for a vehicle together. The grounded rail device comprises a grounded rail and an accessory thereof. The power supply rail device and the grounded rail device each comprise a plurality of anchoring sections, each anchoring section is provided with an independent temperature compensating device which is used for automatically compensating for the length expansion amount caused by environment temperature changes. According to the power supply device, two 750V direct-current power supply rail bodies are used for power supply, the grounded rail is grounded, the power supply mode of an APM is greatly simplified on the premise of meeting running requirements, the number of the power supply rail and the grounded rail is reduced, engineering equipment cost is reduced, and the occupied area is small; the equipment cost of the whole power supply device for the APM system is reduced on the premise of guaranteeing power supplied to a locomotive, the power supply utilization rate is increased, the power supply quality is improved, and the requirement for the structure of the locomotive is reduced.

The invention relates to a solar street lamp self-synchronization method based on Internet of Things technology, in particular to a solar street lamp self-synchronization method based on Internet of Things technology which prolongs the service life of solar street light storage batteries. In the solar street lamp self-synchronization method based on Internet of Things technology, an Internet of Things controller is installed on each solar street lamp in an existing area, the Internet of Things controllers are used for controlling the charging / discharging and turn-on or turn-off of the solar street lamps and collecting the operating data of the solar street lamps at the same time; a Zigbee module is integrated in each Internet of Things controller to complete automatic routing networking function and data transmission function of wireless communication, 4G modules are installed to exchange data with a remote PC through wireless signals, and the solar street lamps are controlled by a monitoring software on the PC. The solar street lamp self-synchronization method based on Internet of Things technology, through the control of remote solar street lamps by a monitoring platform, completes alternating-interval lighting of different modes in each time period of the night, reduces the discharge capacity per night of energy storage equipment, reduces the depth of discharge to achieve the purpose of prolonging the life of the energy storage equipment.

A high-repeatability standard creeping discharge model device is characterized by comprising an organic glass round tube (5), the upper end and the lower end of the round tube (5) are sealed through an upper end cover (4) and a lower end cover (9) respectively, ventilation holes (2) are formed in the periphery of the upper end cover (4), a high-voltage electrode (3) is connected with the middle of the upper end cover (4) through threads, a tungsten needle (6) is arranged below the high-voltage electrode, a grounding electrode (8) is arranged in the middle of the lower end cover, a crystal ball (7) adheres to the grounding electrode with sealing glue, and a discharge gap is reserved between the tungsten needle and the crystal ball. Practical tests show that the discharge model device is small in discharge capacity, stable in discharge and good in repeatability.

The invention introduces a UHV (Ultra High Voltage) transformer field variable frequency partial discharge test device. A No.1 frequency conversion cabinet (2) and a No.2 frequency conversion cabinet (3) are connected in parallel between a control cabinet (1) and an exciting transformer (4) of the UHV transformer field variable frequency partial discharge test device; the high voltage output end of the exciting transformer (4) is connected in parallel with a capacitive voltage divider (5), a compensation reactor (6) and a 1,000kV AC (Alternate Current) UHV transformer (7); and the 1,000kV AC UHV transformer (7) is connected in parallel with a partial discharge tester (8) by end screens of high voltage, intermediate voltage and low voltage sleeves of the 1,000kV AC UHV transformer (7). The device has the advantages that 1, adaptability is strong; 2, the device has a small volume and a light weight and is convenient to transport and assemble; 3, reliability is high and the voltage and the frequency can be continuously regulated; 4, direct contact between people and live equipment is avoided and safety is high; and 5, the device has a wide output frequency range and also can be used as a withstand voltage test variable frequency power supply of equipment such as a UHV GIS (Gas Insulated Switchgear), a mutual inductor and the like.

The invention discloses an outdoor primary and secondary fusion isolation knife built-in intelligent post switch, which comprises an aluminum alloy base and an aluminum alloy housing matched with thealuminum alloy base, The aluminum alloy housing is fastened on the aluminum alloy base to form an outer enclosure box, a plurality of isolation knife main circuit driving structures are arranged in the outer enclosure box, a left current sensor is arranged at the inner end of the left outlet terminal, and a right current sensor is arranged at the inner end of the right outlet terminal; The inner end of the outer enclosure is provided with a hollow chamber, A power operating mechanism is installed in the hollow chamber, The power operation mechanism comprises a front panel and a rear panel, a component mounting chamber is formed between the front panel and the rear panel, and an isolation power mechanism for controlling the separation knife to separate and close, a circuit breaker power mechanism for controlling the circuit breaker to be on and off, and a circuit breaker closing energy storage mechanism for circuit breaker to be on and off for energy storage are installed in the component mounting chamber; The whole power operation mechanism can provide power source to the circuit breaker and the isolating knife separately or simultaneously.

A supply device for a motor vehicle has a DC / DC converter and a control device for the DC / DC converter. The DC / DC converter has first terminals and second terminals, which first terminals are configured for electrical connection to a first energy storage or a first energy source and which second terminals are configured for electrical connection to a second energy storage or a load. The DC / DC converter is configured, in a first state to enable a conversion of a first DC voltage at the first terminals into a lower second DC voltage at the second terminals and, in a second state, to carry out no conversion of a first DC voltage at the first terminals into a lower second DC voltage at the second terminals. The control device enables an energy supply at the second terminals by repeatedly changing the DC / DC converter between the first state and the second state.

A catalyst support comprising silicates is described. This catalyst support has a lower aluminum content than naturally occurring sheet silicates and can be used in the hydration of C2 and C3 olefins to produce C2 and C3 alcohols. A method for the production of the catalyst support and a process for hydrating C2 and C3 olefins are also described. One advantage of this catalyst support is the reduction in aluminum leaching that occurs when this catalyst is used in the presence of phosphoric acid.

The invention relates to a bus connecting sleeve, in particular to a sealed bus connecting sleeve for a gas insulated switchgear. The sealed bus connecting sleeve comprises a conducting rod and an insulator wrapping the outer side of the conducting rod; a flange is arranged on the outer surface of the insulator in the circumferential direction, an installation insert is arranged on the flange, a shielding net is arranged at the position, opposite to the flange, in the insulator, and the shielding net is connected with the installation insert. The insulator is of an integrated structure formedby pouring epoxy resin, an aluminum layer is sprayed on the outer surface of the insulator, the aluminum layer and the installation insert are connected together, and a ground potential is formed after installation. The sealed bus connecting sleeve is high in mechanical strength, convenient to install, high in insulating property, low in partial discharge and good in sealing property.

The invention provides an improved low-temperature automatic heating device suitable for an intelligent terminal, and the device comprises an obtaining module which is used for obtaining environment temperature information, determining a first heating temperature value if the environment temperature information is smaller than first preset environment information or larger than second preset environment information, and determining a second heating temperature value if the first heating temperature value is smaller than the second heating temperature value; when it is judged that the environment temperature information is smaller than or equal to second preset environment information, a dynamic second heating temperature value is generated according to the environment temperature information; the generation module is used for acquiring the type information of the intelligent terminal and the area information and the thickness information of the heating film to generate heat loss information; the determining module is used for determining a first heating voltage of the heating film according to the first heating temperature value and the heat loss information, and determining a second heating voltage of the heating film according to the second heating temperature value and the heat loss information; and the control module is used for controlling a low-temperature-resistant battery to supply power to the heating film according to any one of the first heating voltage and the second heating voltage.

The invention relates to a fuel-powered breaker machine (1) which has a cylinder (2, 2.3, 2.4) with two pistons (3, 4) disposed therein. The first of the pistons (3) is adapted to opening and closing at least an inlet aperture (5, 6) on an inlet side (I) in a cylinder shell wall (7), and an outlet aperture (8) on an opposite outlet side (O) in the cylinder shell wall (7), and, when the apertures (5, 6, 8) are closed, to compressing against the second piston (4), which acts as the working piston of the breaker machine (1), an ignitable air / fuel mixture which is admitted via the inlet aperture / apertures (5, 6). The first piston (3) has a crown (11) which is shaped correspondingly to a crown (10) of the second piston (4) and which on said inlet side (I) has a recess (12) which serves, when the first piston (3) is at an upper dead center position, as a combustion chamber into which a spark plug (16) protrudes via the cylinder shell wall (7) on the inlet side (I), and, when the first piston (3) is at a lower dead center position, as an inlet chamber into which the inlet aperture / apertures (5, 6) leads / lead.

A driving signal generating circuit generates, for each driving period, a main driving signal including a first sub driving signal including a first driving pulse, a second sub driving signal including a second driving pulse, and a third sub driving signal including a third driving pulse. The third sub driving signal follows the second sub driving signal. A driving signal supplying circuit includes a second dot former to supply the second sub driving signal and the third sub driving signal to an actuator coupled to a defining plate defining a portion of a pressure chamber, without supplying the first sub driving signal to the actuator. The third driving pulse starts after a lapse of a preset time from the start of the second driving pulse. The preset time is equal to a value of about p×Tc, where p is greater than 2.

At least two types of active materials having different charge and discharge characteristics are combined and incorporated into a same cell to provide a battery. The active materials having different charge and discharge characteristics to be incorporated have any form without limitation to a particulate shape, a plate, a rod or the like. The active materials having different charge and discharge characteristics are incorporated into either or both of the cathode and the anode.

The invention discloses a detachable battery module and a system thereof, and relates to the technical field of chemical energy storage. The invention aims at solving the problem that a battery pack is inconvenient to maintain, replace and replace single batteries in a welding mode. According to the technical scheme, the battery module comprises batteries, and the batteries are arranged in a modethat axes are parallel and polarity directions are consistent to form the battery pack; a positive electrode confluence piece is matched with the battery pack, and an elastic piece in contact with thepositive electrode conductive end of the battery is arranged on the positive electrode confluence piece; a negative electrode confluence piece is matched with the battery pack and is provided with alimiting flow guide seat which is in contact with the negative electrode conductive end of the battery; the battery is connected with the limiting flow guide seat in a clamping and embedding manner; when the battery is reversely inserted, the positive conductive end of the battery is not in contact with the limiting flow guide seat. According to the invention, the single batteries can be quickly disassembled and replaced, the normal work of a battery system is not influenced, and short circuit caused by reverse insertion of the batteries can be avoided.

The invention discloses a built-in isolating knife structure for an outdoor intelligent post switch, which comprises an aluminum alloy base and an aluminum alloy housing matched with the aluminum alloy base, The aluminum alloy housing is fastened on the aluminum alloy base to form the outer enclosure box, A plurality of isolate knife main circuit drive structure is arranged in parallel and in series in the outer enclosure box, A left outlet terminal is arranged at that left end of the driving structure of the isolate knife main circuit, a right outlet terminal is arranged at the right end of the driving structure of the isolating knife main circuit, a left voltage sensor and a right voltage sensor are arranged on the driving structure of the isolating knife main circuit, a left current sensor is arranged at the inner end of the left outlet terminal, and a right current sensor is arranged at the inner end of the right outlet terminal; The outer enclosure box and the insulation box are arranged in two layers, and the whole structure is box-type, with built-in isolation knife and voltage / current sensor; the main drive is linearized; the electric field strength is uniform; the arc extinguishing chamber adopts vacuum arc extinguishing chamber; and the insulation medium adopts environment-friendly gas insulation.

The invention relates to a fuel-powered breaker machine (1) which has a cylinder (2, 2.3, 2.4) with two pistons (3, 4) disposed therein. The first of the pistons (3) is adapted to opening and closing at least an inlet aperture (5, 6) on an inlet side (I) in a cylinder shell wall (7), and an outlet aperture (8) on an opposite outlet side (O) in the cylinder shell wall (7), and, when the apertures (5, 6, 8) are closed, to compressing against the second piston (4), which acts as the working piston of the breaker machine (1), an ignitable air / fuel mixture which is admitted via the inlet aperture / apertures (5, 6). The first piston (3) has a crown (11) which is shaped correspondingly to a crown (10) of the second piston (4) and which on said inlet side (I) has a recess (12) which serves, when the first piston (3) is at an upper dead centre position, as a combustion chamber into which a spark plug (16) protrudes via the cylinder shell wall (7) on the inlet side (I), and, when the first piston (3) is at a lower dead centre position, as an inlet chamber into which the inlet aperture / apertures (5, 6) leads / lead.