31results about How to "Reduce wild swings" patented technology

The invention discloses a lift pump house and post-ozone contact pool combined structure. The lift pump house and post-ozone contact pool combined structure is characterized in that a lift pump house suction well which is connected with a water inlet pipe is arranged on the lower layer of a lift pump house, a water outlet confluence channel is arranged on the upper layer of the lift pump house, a lift pump is arranged between the upper layer and the lower layer of the lift pump house, the water outlet confluence channel is communicated with a post-ozone contact pool, an ozone pool is communicated with a water outlet well, and the water outlet well is connected with a water outlet pipe. An ozone generator room is constructed on the upper portion of the post-ozone contact pool in a combined mode, an ozone generator is arranged in the ozone generator room, and the ozone generator is connected with an ozone gas distributing pipe in the contact pool. According to the lift pump house and post-ozone contact pool combined structure, a plurality of structures are compactly and reasonably combined, a water outlet pipeline system of the lift pump house is omitted, an ozone conveying system and an electric transmission line system are simplified, engineering occupied land and investment are saved, and operation fees are reduced; and simultaneously, the storage capacity of the lift pump house suction well is increased, frequent opening times of the water pump are reduced, production management is convenient, and operation safety is guaranteed.

The invention discloses an elevator energy-saving device based on a cooperative control mode, which comprises an energy storage device (20), an energy storage device state detector (21), a charging and discharging circuit (19), an energy storage device controller (22), an energy consumption circuit (5), an energy consumption controller (18) and a cooperative controller, wherein the cooperative controller is used for realizing the cooperation and matching of a charging process of the energy storage device and an energy consumption process of the energy consumption circuit; instruction values of the energy storage device controller and the energy consumption controller are generated by the cooperative controller according to a running condition of an elevator; and according to the instruction values, the charging process of the energy storage device (20) and the energy consumption process of the energy consumption circuit (5) are performed in the cooperative control mode. The elevator energy-saving device can be used for realizing the energy conservation of the elevator, efficiently relieving fierce fluctuation of a bus voltage and coping with a specific situation that a regenerated current or regenerated power of an elevator motor is beyond an allowed scope of the energy storage device (20) and the charging and discharging circuit (19).

The invention discloses a lift pump house and post-ozone contact pool combined structure. The lift pump house and post-ozone contact pool combined structure is characterized in that a lift pump house suction well which is connected with a water inlet pipe is arranged on the lower layer of a lift pump house, a water outlet confluence channel is arranged on the upper layer of the lift pump house, a lift pump is arranged between the upper layer and the lower layer of the lift pump house, the water outlet confluence channel is communicated with a post-ozone contact pool, an ozone pool is communicated with a water outlet well, and the water outlet well is connected with a water outlet pipe. An ozone generator room is constructed on the upper portion of the post-ozone contact pool in a combined mode, an ozone generator is arranged in the ozone generator room, and the ozone generator is connected with an ozone gas distributing pipe in the contact pool. According to the lift pump house and post-ozone contact pool combined structure, a plurality of structures are compactly and reasonably combined, a water outlet pipeline system of the lift pump house is omitted, an ozone conveying system and an electric transmission line system are simplified, engineering occupied land and investment are saved, and operation fees are reduced; and simultaneously, the storage capacity of the lift pump house suction well is increased, frequent opening times of the water pump are reduced, production management is convenient, and operation safety is guaranteed.

The invention discloses an energy saving device for an elevator, which comprises an energy storing device (20), an energy storing device state detector (21), a charging and discharging circuit (19) and an energy storing device controller (22), wherein the energy storing device controller (22) controls the charging and discharging circuit (19) in an allowable range of the energy storing device (20) and the charging and discharging circuit (19) according to the bus voltage and the reference value of the bus voltage, and in addition, the reference value of the bus voltage is variable according to the charging state and / or the charging state change of the energy storing device (20). The energy saving device for the elevator has the advantages that the energy saving of the elevator can be realized, and simultaneously, the severe fluctuation of the bus voltage can be effectively retarded, so the control performance of a motor of the elevator is improved.

The invention discloses a stable and quick automatic water replenishing system of a torch water-sealed tank. A first water replenishing pipeline and a second water replenishing pipeline are respectively connected between a water replenishing tank and the water-sealed tank; a first control valve is arranged on the first water replenishing pipeline; a second control valve is arranged on the second water replenishing pipeline; a first liquid level indication controller is arranged on the water-sealed tank; the first control valve and the second control valve are respectively interlocked with the first liquid level indication controller; when the liquid level of the water-sealed tank falls to a first set liquid level, the first liquid level indication controller controls the first control valve to be opened; when the liquid level of the water-sealed tank falls to a second set liquid level, the first liquid level indication controller controls the second control valve to be opened; when the liquid level of the water-sealed tank rises to a third set liquid level, the first liquid level indication controller controls the first control valve and the second control valve to be closed; the first set liquid level is higher than the second set liquid level; and the third set liquid level is higher than the first set liquid level.

The invention relates to a high-precision segmental pulse generation method for temperature control. By decomposing the binary PWM long pulse into multiple short pulses to achieve the purpose of segmental heating, it can avoid the heating time being too concentrated, resulting in large temperature fluctuations and damage to the heating plate, as shown in Figure 1. Since the segmented pulse is shorter, the temperature control accuracy will decrease compared with the pulse before decomposition. In order to solve this problem, the present invention counts multiple short pulses and performs closed-loop feedback, and evenly adds the low-level phase information after decomposition. To each short pulse, a high-precision, uniform heating pulse generating circuit is realized.

The invention discloses a waste gas incinerator which comprises a hearth, a heat accumulation pipe, a heater, an air inlet, an air outlet and a smoke cooler. An upper sealing end plate is arranged at the upper portion of the interior of the hearth. An upper portion air passing space is formed in the sealed space defined by the upper sealing end plate and the inner wall of the hearth. A lower sealing end plate is arranged at the lower portion of the interior of the hearth, and a lower portion air passing space is formed in the space defined by the lower sealing end plate and the inner wall of the hearth. Waste gas and smoke conduct heat exchange through the wall of the heat accumulation pipe so that the two kinds of gases cannot be mixed mutually, and the waste gas incinerator does not need to switch the flow directions of waste gas and smoke in turns to complete the heat exchange process of heat accumulation and heat releasing like a traditional heat accumulation incinerator. The heat accumulation pipe in the hearth has good thermal capacity and heat conductivity, fast heat absorbing and releasing can be achieved due to the good heat accumulation performance of the heat accumulation pipe, and acute fluctuation of the temperature of the hearth is reduced.

The invention belongs to the technical field of water-based polyurethane resins, and in particular relates to a method for preparing polyisocyanates by photochemical reaction and a method for preparing water-based polyurethane resins. The method for preparing water-based polyurethane resins comprises the following steps: The raw materials of chain extender and hydrophilic agent are polymerized to obtain water-based polyurethane resin; wherein, the content of benzophenone impurities in the polyisocyanate is ≤0.045wt%. By controlling the content of benzophenone impurities in the polyisocyanate preparation process, the invention can effectively improve the anti-yellowing performance of the product, and also reduce the harm of unqualified downstream products caused by the presence of such impurities in the product.

The invention discloses an energy-saving device for an elevator. The device comprises an energy storage device, an energy storage device state detector, a charging and discharging circuit and an energy storage device controller, wherein the energy storage device controller performs charging and discharging control on the energy storage device according to the stored energy or residual capacity of the energy storage device at each zero power point in subsequent operation of the elevator, and an estimated value of the consumed or generated power and energy of an elevator motor between adjacent zero power points or in an interval from the current moment or position to the nearest zero power point. The energy of the elevator can be saved through electric energy release and regeneration energy storage, and power and energy consumed or generated when the elevator finishes the operation can be estimated at the specific moment, so that the operation load of a processor, the severe fluctuation of bus voltage and the charging and discharging current impact of the energy storage device are effectively reduced, and the capacity of the energy storage device can be fully utilized.

The invention provides a high-speed filter with a siphon automatic excess pressure exhaust, flow guide and pressure relief device, and relates to a filter with a closed container filled with bulk materials, in particular to a high-speed filter with a device for automatically removing gas in the filter. The high-speed filter comprises a high-speed filter body filled with a granular filter material layer, and the siphon automatic excess pressure exhaust, flow guide and pressure relief device is arranged. The exhaust, flow guide and relief device comprises an exhaust, flow guide and pressure relief pipe and a Y-shaped filter net. The exhaust, flow guide and pressure relief pipe is vertically installed beside the high-speed filter body, the inlet end of the exhaust, flow guide and pressure relief pipe is connected to an exhaust valve inlet pipeline of the high-speed filter body, the outlet end of the exhaust, flow guide and pressure relief pipe is connected to a backwashing water outflow valve outlet pipeline of the high-speed filter body, and the absolute height difference exceeds the vertical height of the high-speed filter; hidden danger that air is accumulated in the high-speed filter and a compressed air layer is formed on the upper portion can be eliminated, zero-energy-consumption exhaust, flow guide and pressure relief and zero pollution and zero discharge of the high-speed filter are achieved, exhaust noise pollution is eliminated, and the service life of an exhaust valve and a filter material is prolonged.

The invention relates to the technical field of large power grid stability control, and specifically discloses an adaptive virtual synchronous control system applied to a direct current transmission system, including a parameter deviation acquisition module, a parameter self-adaptive adjustment module, a virtual governor control module, and a virtual synchronous machine control module and reactive power control module. The present invention also discloses a control method for an adaptive virtual synchronous control system applied to a direct current transmission system, including: S1: collecting detection parameters and generating parameter deviations; S2: sending parameter deviations; S3: judging the Oscillating state of the AC power grid; S4: Generate the adjustment value of the output power reference value of the converter station; S5: Generate the voltage phase angle signal of the AC side bus of the converter station; S6: Generate the voltage phase angle signal of the AC side bus of the converter station; S7: generate PWM signal. The invention improves the inertia level, overall stability and frequency stability of the AC and DC power grid, and reduces power fluctuations and frequency fluctuations.

The invention discloses a top plug-in type spray gun for ventilating and slag gathering and a preparation method thereof. The spray gun comprises a connection segment, a gun body segment and a spray segment which are in successive communication; the spray segment consists of a spray-segment air chamber enclosed at the end, a spray-segment V-shaped anchoring piece and a spray-segment refractory castable; the sidewall of the spray-segment air chamber is provided with dispersion-type nozzles perpendicular to the axis of the sidewall; and the included angle of the center axes of two dispersion-type nozzles at the outermost side is less than 150 DEG. The method comprises: firstly processing and preparing all metal parts of the spray gun according to structural parameters of the to-be prepared spray gun, and removing rust; then preparing and obtaining the spray segment, communicating a main pipe of the gun body segment with the spray-segment air chamber through welding; and selecting steel fiber reinforced corundum mullite castable to perform casting molding, so as to obtain the spray gun. The provided spray gun preparation method guarantees smooth preparation of the spray gun, the structure dimension precision of the spray gun, unblocked gas injection channel and metal structure airtightness, and helps to improve the internal quality and the usage performance of the spray gun.

The invention discloses an upflow type residual oil hydrogenation treatment method. The method comprises: the residual oil feed and hydrogen enter the hydrogenation reactor from the lower part, contact with the hydrogenation catalyst to carry out the hydrogenation reaction, and the product is discharged from the upper part of the hydrogenation reactor, and the hydrogenation reactor is an upflow type A hydrogen reactor, and at least one upflow hydrogenation reactor is used, and each upflow hydrogenation reactor is provided with at least two catalyst beds, and each catalyst bed is filled with the same hydrogenation catalyst. The method of the invention not only has good hydrogenation performance and metal removal capacity, but also has a certain desulfurization and carbon residue and asphaltene conversion capacity, high hydrogenation activity, long service life, and also overcomes the catalyst in the current upflow reactor. There are many types, cumbersome loading and unloading, different active types of catalysts lead to instability of the catalyst bed, which affects the performance of the catalyst and the stable operation of the device.