46results about How to "Reduce damage accidents" patented technology

The invention discloses a physical modeling-based robot obstacle avoidance path planning method, which comprises the following steps of: setting a gravitational field grid and a distance information grid of a robot working region to establish a robot double-grid information graph; based on the double-grid information graph, searching all feasible paths by using a directional ergodic method; calculating a comprehensive evaluation value of a gravity value and a distance value; and taking a path scheme corresponding to the maximum value as a robot optimal obstacle avoidance path planning scheme.By using the method, the defect that geometric attributes of moving objects and obstacles in robot path planning are not considered is overcome; during path searching after double grids are established by the method, robot obstacle avoidance path planning is performed according to the value of the double grids; and thus, the problems of the shortest path and moving safety are both taken into consideration, the efficiency of path planning is increased, and damage accidents which probably occur in path optimization are reduced.

The invention discloses a regional power grid automatic voltage control (AVC) method. An AVC system conducts classification and partitioning through PAS network modeling according to a distribution state of a power system voltage reactive space, the classification is conducted according to voltage levels of the power grid, and the partitioning is conducted according to a local area feature of reactive balance. An AVC system control mode gives priority to a sequence of first optimal control of area voltage, then correction control of voltage of all levels and finally the area reactive optimal control. The area voltage optimal control is optimizing of center point bus voltage level in a correction system. The correction control of the voltage of all levels is optimizing of node voltage level in an optimizing correction system. By arranging a classification partitioning control strategy on a traditional AVC and by adding a load predicting link and a link of diagnosing an electric control attribute of a device current state, the control strategy is predictable. Meanwhile, advanced control is achieved according to a device operating state, and device movement delay is reduced.

The invention discloses a method of applying steel slag waste heat to bake a new-built ladle. The method comprises the steps that liquid state steel slag of a converter is splashed in the middle of a slag pond in a hot splashing way, and a certain amount of solidified red hot state steel slag after hot splashing is selected to be loaded into a slag tank; the red hot state steel slag is used for baking the ladle according to the baking curve of the ladle; the opening of the ladle is covered by a ladle cover, thermal energy is prevented from being lost, after baking for 8h, an infrared thermometry gun is used for measuring the baking temperature of a refractory matter, wherein the temperature of the refractory matter reaches 180+ / -50 DEG C, and new hot state slag is added to enter a next temperature baking phase; after baking for 16h, the baking temperature of the refractory matter in the ladle is measured to reach 300+ / -50 DEG C, the slag in the ladle is poured, the red hot state slag is added into the ladle to continue baking, the temperature is measured after 8h, if the temperature of the refractory matter in the ladle reaches 500+ / -50 DEG C, the slag in the ladle is poured, the ladle is sequentially baked to 900 DEG C by using fuel gas or fuel oil, and the ladle can be used according to a normal technology.

The invention discloses a rolled piece position tracking device for a sectional material hot rolling finishing mill. The rolled piece position tracking device comprises a machine frame, a tracking region, a zero current sampling section, a tension adjustment section, a hot metal detector, a frequency converter, a man-machine interface local area network, a high-performance controller, a man-machine interface server and a local control panel, wherein the zero current sampling section and the tension adjustment section are arranged in the tracking region, and a rolled piece position tracking control module is arranged in the high-performance controller. A rolled piece position tracking method for a sectional material hot rolling finishing mill comprises the following steps that 1, the rolled piece position tracking control module is started; 2, the position of a rolled piece in the tracking region is calculated and is compared with the position values of the tension adjustment section and the zero current sampling section; 3, the rolled piece position tracking control module finishes the tracking procedure of the current tracking region according to cascade signals and steel occluding current change signals. The rolled piece position tracking device and the rolled piece position tracking method have the characteristics that the rolled piece tracking precision is high, the manual intervention is little, the yield of hot rolling sectional materials is high, the failure rate is low, and the labor cost is low. The rolled piece position tracking device and the rolled piece position tracking method can be widely applied to the technical field of sectional material hot rolling automation control.

The invention discloses a mixed atomizer cooling protection system for an entrained-flow reactor. The cooling protection system comprises twelve subsystems such as a cooling water pump self-starting subsystem, a cooling water batch liquid level control subsystem, a cooling water header pressure indicating and alarming subsystem, an emergency cooling water bath protection subsystem, a mixed atomizer cooling water inlet flow protection subsystem, a mixed atomizer cooling water outlet flow indicating and alarming subsystem, a mixed atomizer cooling water outlet temperature indicating and alarming subsystem, etc. The mixed atomizer cooling protection system can effectively protect equipment of the mixed atomizer and the mixed atomizer cooling protection system, prolong the total service life of the mixed atomizer, improve the on-stream availability of the entrained-flow reactor, and ensure the safety of personnel and equipment.

The invention discloses a magnetic handle, which comprises two magnetic actuators and a rotation adjustment mechanism connected between the two magnetic actuators; the magnetic actuator includes a magnetic seat, a middle connecting plate, a bearing arm, an elastic positioning mechanism and handle; the upper end surface of the magnetic base is fixedly connected to the load-bearing arm through the intermediate connecting plate; a through hole is opened on the intermediate connecting plate, and an elastic positioning mechanism connecting the upper end surface of the magnetic force base is arranged in the through hole; one end of the bearing arm is connected to the handle On one side, the other side of the handle is provided with a connecting arm for connecting the rotating adjustment mechanism; the rotating adjusting mechanism includes a ratchet, a pawl, a rotating shaft and a spring, the ratchet is fixed on the connecting arm of a magnetic actuator, and the rotating end of the ratchet The connection arm of another magnetic actuator is connected through the rotating shaft, and the big end of the ratchet is connected with the handle of another magnetic actuator through a spring. The invention has the advantages of simple structure, convenient use, stability and reliability, and can realize non-scratch and non-stain assembly of precision ferromagnetic workpieces.

The invention discloses a ground well casing capable of preventing mining damage, which comprises at least two casing bodies, a deflection joint and an expansion joint, adjacent casing bodies are connected by the deflection joint or the expansion joint, when in use, according to analysis results of strata displacement, the casing bodies are connected by the deflection joint in the depth corresponding to strata where the casing is easy to cut and twist, the casing bodies are connected by the expansion joint in the depth corresponding to strata where the casing is easy to pull and press, and the casing bodies are connected after the deflection joint and the expansion joint are connected in series in a small depth range corresponding to strata where the casing is easy to not only cut and twist but also pull and press, so that the casing can adapt to strata variation, thus reducing damage accidents of the well casing and guaranteeing smooth gas extraction through the ground well.

The invention discloses an overheated alarm for electrical equipment heating, which comprises a fixed heat conducting bar with a connecting mechanism, wherein the fixed heat conducting bar is provided with two multilateral petaloid metal sheets; and the fixed heat conducting bar is connected to the electrical equipment through the connecting mechanism. In the invention, when the electrical arrangement temperature rises to a certain value, the fixed heat conducting bar connected with the electrical equipment thermally conducts the heat to the two metal sheets so that the two metal sheets deform from small to large, and an alarming pigment layer is shown outside because of the deformation, thereby being easily sawn.

The invention discloses a temperature-sensing indicating nut, which comprises a base, a temperature-sensing element and an indicating column; the base is provided with a cylindrical accommodating groove with an open top; the inner wall of the accommodating groove is provided with a card slot, The indicating column is installed in the accommodating groove, and the outer wall of the indicating column is provided with a claw that cooperates with the slot; the indicating column is a hollow cylindrical structure with an open lower end and a closed top. The temperature sensing element is installed inside the indicating column. The invention is reasonable in design and simple in structure. It is installed at the place where the electric equipment needs to detect the temperature, and the temperature of the contact point of the transmission line can be monitored in real time by using the shape memory effect of the shape memory alloy. , Eliminate the hidden dangers of system operation and ensure the normal operation of system equipment.