6results about How to "Eliminate the problem" patented technology

A robotic monitoring, detection and fire extinction control system comprises a pumping station, a fire main and at least two robotized fire extinguishing units connected to the fire main comprising a fire monitor with drives for vertical and horizontal aiming and a head with a drive for adjusting the spray angle of the jet. Mounted at an inlet upstream of the fire monitor is a butterfly valve with a drive, and mounted at the outlet of the fire monitor, upstream of the head, are a pressure sensor and a portable control console that are connected to a switching unit at the inlet and, via a network controller, to a control device at the outlet. Mounted on the fire monitor is a fire detection and video surveillance device that is connected to a signal processing device that is connected to a video monitor device and to a process control system that are connected to a control device that is connected via a receiving and control device to fire alarms. A foam generating unit is connected to the robotized fire extinguishing units by a foam conduit; additional reserve pipes, connected to the robotized fire extinguishing units, are provided for supplying water and compressed air foam; and an additional controllable butterfly valve, mounted on the foam conduit, is provided and has a drive connected to the switching unit. The head is designed to be capable of supplying water and compressed air foam at a controlled concentration and rate.

The present application relates to the technical field of heating devices, and discloses a ceramic electric soldering iron, comprising a soldering iron head, a handle, a ceramic heating body, a positive wire and a negative wire, wherein the ceramic electric soldering iron further comprises a conductive wire and a ground wire, wherein the negative wire is connected to the soldering iron head, the positive wire is connected to the ceramic heating body, the conductive wire is connected to the negative wire at the front end of the ceramic heating body, the conductive wire is connected to a control measurement center (which can measure a grounding voltage and a grounding resistance), and the ground wire is connected to the handle. The ceramic electric soldering iron has the advantage of determining whether the grounding voltage less than 2 mV and the grounding resistance less than 2 Ω are satisfied.

The application discloses a high-purity full-water-soluble potassium sulfate fertilizer and a preparation method thereof, and belongs to the technical field of potassium sulfate fertilizers. The high-purity full-water-soluble potassium sulfate fertilizer is composed of the following components in parts by weight: 960-980 parts of industrial-grade potassium sulfate, 10-20 parts of urea phosphate, 5-15 parts of potassium nitrate, 1-3 parts of sodium hexametaphosphate, 0.5-1.5 parts of sodium cocoyl glutamate and 1-5 parts of citric acid-polyethylene glycol modified polyaspartic acid. The problems of slow dissolution and false saturation of traditional potassium sulfate fertilizers in low-temperature cold water are effectively eliminated.

According to the present invention, a method for producing a compound represented by general formula (3) by having a compound represented by general formula (1) and a compound represented by genera formula (2) react with each other reaches a sufficient reaction rate at a low temperature in a short time, and provides an alkoxysilyl alkylaminoalkyl-modified polysiloxane compound which has a low polymer content and good storage stability, while being suppressed in coloration. (In general formula (1), R1 represents a monovalent hydrocarbon group; X represents a hydrogen atom or R13Si (wherein R1 is as described above); and p represents an integer of 1 to 1,000.) (In general formula (2), each of R2 and R3 represents a monovalent hydrocarbon group; R4 represents a divalent hydrocarbon group which may contain a sulfur atom or the like; q represents 0 or 1; and r represents 0, 1 or 2.) (In general formula (3), R1 to R4, p, q and r are as described above; and Y represents a substituent represented by general formula (4) (wherein R2 to R4, q and r are as described above) or R13Si (wherein R1 is as described above).)

The application discloses a cavity electromagnetic field homogenization method for wireless energy transmission. The application uses an internal multi-port method to calculate electromagnetic field distribution in a metasurface resonant cavity under certain port configuration, and then finds a suitable port connection mode through a genetic algorithm, so that the electromagnetic field in the cavity is approximately uniformly distributed. The application realizes uniform distribution of electromagnetic field in the resonant cavity, and can realize efficient transmission everywhere in the cavity.

The utility model relates to the technical field of tension and compression testing machines, and discloses a servo tension and compression testing device, which comprises a bracket; the execution unit is fixedly arranged on the bracket; the tension and compression sensor is installed on an output shaft of the execution unit and used for extruding / stretching a tested workpiece, and the tested workpiece is fixedly arranged on the lower portion of the support; the deformation detection structures are respectively arranged on the tension and compression sensor and the bracket, and are used for detecting the axial deformation of the tension and compression sensor and the bracket in the axial direction when the tension and compression testing device stretches / extrudes the workpiece; through the arrangement of the deformation detection structure, the micro deformation generated by the tension and compression sensor and the bracket is detected by utilizing the displacement generated by the sliding block along the grating ruler, so that the problems caused by the deformation in the tension and compression test are eliminated, and the accuracy of the test device is improved.