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.

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.

According to the present invention there is provided fluidising apparatus comprising: a flow chamber 2 having a fluid inlet 4 and a fluid outlet 6; means 18 for establishing a swirling flow in a fluid passing out of the fluid outlet; and a transport outlet 30 for transporting fluidised material away from the flow chamber 2, the transport outlet 30 being situated externally of the flow chamber 2.

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.

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.

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 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.

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.

The invention discloses a partial discharge test platform and method for a high-voltage switch cabinet insulating part. The platform comprises a partial discharge shielding room for isolating externalelectromagnetic interference, and a partial discharge operation console, a power frequency alternating current power supply, a partial discharge-free voltage regulator, a partial discharge-free testtransformer, a partial discharge-free protection resistor, a coupling capacitor, a partial discharge tester, a shielded stranded wire, an insulating part power connection plate and an insulating partsupporting part which are arranged in the partial discharge shielding room, wherein the insulating part supporting part is used for installing an insulating part, the insulating part power connectionplate is used for being electrically connected with the insulating part, the non-partial-discharge protection resistor is electrically connected with the insulating part power connection plate throughthe shielded stranded wire, the output of the non-partial-discharge test transformer is connected with the non-partial-discharge protection resistor, the coupling capacitor is connected with the shielded stranded wire, and the partial discharge tester is connected with the coupling capacitor. The platform and method can effectively reduce the background partial discharge amount, improves the testaccuracy, and has a good application prospect.

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.