31results about How to "Simple on-site commissioning" patented technology

The invention discloses a hydraulic control method for a ram piston oil cylinder of an internal mixer. According to the method, pressurizing and floating of a pressing lead are achieved, and a control effect of floating of the pressing lead is good. The hydraulic control method is characterized in that the pressure and speed of a ram piston are controlled by a main PLC of the internal mixer, and the pressure control over the ram piston is the pressure control over rod end chambers of the ram piston oil cylinder; a first hydraulic oil path is connected with non-rod end chambers of the ram piston oil cylinder through oil pipes by passing an oil inlet P1, a proportional servo valve PLV, an electromagnetic cartridge valve YV1 and an electromagnetic cartridge valve YV2; the other hydraulic oil path is connected with the rod end chambers of the ram piston oil cylinder through the oil pipes by passing the oil inlet P1, the proportional servo valve PLV and an electromagnetic cartridge valve YV4, and the rod end chambers of the ram piston oil cylinder are connected with the oil inlet P1 through a rising differential one-way valve; an electromagnetic cartridge valve YV3 connected with an oil return opening T2 is further connected between the electromagnetic cartridge valve YV1 and the electromagnetic cartridge valve YV2; an oil inlet P of the proportional servo valve PLV is connected with the oil inlet P1, and an oil return opening T of the proportional servo valve PLV is connected with an oil return opening T1. According to the hydraulic control method, a hydraulic control device for the ram piston oil cylinder is simplified, closed-loop control over the pressure of the ram piston can be truly achieved, and the quality of rubber mixing is improved.

The invention discloses a hole distributor for blast holes, and belongs to the technical field of positioning apparatuses, and the hole distributor aims to overcome the problem that hole pattern parameters are inexact. The hole distributor for the blast holes comprises a hole distributor single disk, a hole distributor dual-disk, a hole distributor pull ring and a tape measure, wherein the hole distributor single disk comprises a single disk hand-held part, a single disk tape measure rocking bar, a single disk tape measure outlet, a single disk brake button and a right-angled laser orientation gun; the right-angled laser orientation gun comprises a laser switch button and two laser orientation guns which are at a right angle with each other; the end part of the laser orientation gun is provided with a laser emitting head; the hole distributor dual-disk comprises a dual-disk handheld part and two sets of tape measure devices; each tape measure device comprises a dual-disk tape measure rocker rod, a dual-disk tape measure outlet and a dual-disk brake button; the hole distributor pull ring comprises a pull ring handheld part and two tape measure positioning heads; and a tape measure head positioning button is arranged on each tape measure head positioning head. The hole distributor for the blast holes disclosed by the invention is easy to manufacture, quick and simple in site debugging, high in positioning precision and high in hole distributing efficiency, and is especially suitable for passing through the blast holes to distribute the holes.

The invention discloses a method and system for controlling the main steam temperature of a power generation boiler based on multivariable decoupling, and belongs to the technical field of thermal power generation boiler combustion optimization. Aiming at the problem that the control of the main steam temperature in the prior art is difficult to be popularized and applied in the actual industrial field, the present invention provides a method for controlling the main steam temperature of a power generation boiler based on multivariable decoupling. The signal acquisition module acquires the set flow rate of the furnace gas signal, low-temperature superheater outlet set temperature signal and high-temperature superheater outlet set temperature signal, the decoupling module decouples the signal obtained by the signal acquisition module, and the decoupled output signal is processed by a feedforward-feedback composite controller Regulating control, to realize controlling the output signal by adjusting the signal valve. The invention is applicable to the DCS distributed control system, realizes the stable control of the main steam temperature, can reduce the work intensity of field operators, improves the operating economy of the unit, and makes the system have strong stability.

The invention provides a power supply real-time communication method, which is used for mutual communication among a plurality of nodes. In the method a node is addressed by a time division multiplexing mode, and each time slot of a synchronizing pulse corresponds with a node address, wherein each time slot is divided into four time intervals by five moments from t1 to t5. After the system is initiated, the method comprises the following steps: 1, a synchronous power supply signal supplies power to all N nodes in synchronized power supply time intervals, and is delayed to the t1 moment of the first node; 2, the synchronous power supply signal is changed from high level to first low level at the t1 moment of the time slot of the corresponding node, and is delayed to t2 moment for input operation of the node until t3 moment; 3, the output state of the node is detected at t3 moment for output operation of the node until t4 moment; 4, high level of the synchronous power supply signal is maintained to charge the node in the time interval of between t4 and t5; and 5, the nodes are counted to determined whether a communication cycle is completed or not. The system circulates the operation in the performed way.

The invention discloses a dynamic simulation test device for an electric control system of a mining winch, which comprises a bottom platform, a bracket fixed on the bottom platform, a transmission device and a detection device; the transmission device includes a driving device horizontally arranged on the bottom platform, and The drive wheel 1 and the bevel gear pair are fixedly connected in sequence at the output end of the driving device, the two ends are longitudinally fixed on the bracket through bearings and the screw whose bottom end is connected to the output end of the bevel gear pair, and the drive wheel is connected to the drive wheel 1 through a belt 2. The detection device includes a mounting plate fixed longitudinally on the bracket and located on one side of the lead screw, several travel switches arranged at intervals on the mounting plate, threaded with the lead screw and used to trigger the slide block of each travel switch, set Encoder 1 on the top of the lead screw, and encoder 2 fixedly connected to the drive wheel 2; truly reflect the internal hardware and software logic relationship of each travel switch and encoder, effectively reduce false detection and missed detection, and ensure that the travel switch and encoder effectiveness.

The invention relates to a pressure regulating valve of a water turbine volute casing. A valve bush is sleeved outside the tail end of a center pipe in a draining passage coaxially, two coaxial pull rods are fixedly mounted on the valve bush symmetrically and are particularly fixedly mounted on fixing seats fixedly mounted at lower ends of two sides of a fork mounted outside the draining passage, and the fork drives and guides the two pull rods to move horizontally so as to drive the valve bush to move on the center pipe coaxially. The pressure regulating valve in a mechanical combined full-hydraulic control mode realizes water feeding horizontally and water discharging horizontally, is high in throughput capacity and low in operating force, is accurate in movement and safe and reliable due to the pressure differential hydraulic-control mean, and is capable of running with a water turbine speed regulating system better to meet requirements for guaranteeing regulation of hydropower stations.

The invention relates to a method and a device for processing echo signals of a guided wave radar liquid level meter. The method includes a benchmark leveling adjusting step, an amplification factor adjusting step and a clutter removing step. The device comprises a microprocessor, a control circuit, a pulse transmitting circuit, an echo receiving circuit, a signal processing circuit and an A / D (analog / digital) conversion circuit. The method and the device have the advantage that problems of incapability of detecting weak echo signals, degradation of measurement stability and reliability and limited application ranges when guided wave radar liquid level meters are applied under the conditions of low dielectric constants or wide measuring ranges can be solved.