36results about How to "Easy to install and use on site" patented technology

The invention discloses a horizontal multipoint settlement monitoring device and a monitoring method thereof based on hydraulic measurement, which are used for settlement monitoring of buildings such as roadbeds or bridges. The monitoring device comprises a liquid storage tank arranged at a datum point part, monitoring containers, silicon micro differential pressure sensors, settlement collecting instruments and a settlement plate used for anchoring the silicon micro differential pressure sensors, wherein the monitoring containers, the silicon micro differential pressure sensors and the settlement collecting instruments are arranged at the datum point part and monitoring point parts; the liquid storage tank and the monitoring containers are communicated through communication pipes; membranes of the silicon micro differential pressure sensors are in contact with the liquid levels in the monitoring containers; the output ends of the silicon micro differential pressure sensors are connected with the input ends of the settlement collecting instruments; and all the silicon micro differential pressure sensors are communicated with the same air pipe. The monitoring method is achieved via the monitoring device; and according to the monitoring method, the pressure of the monitoring points and the datum point is detected through the silicon micro differential pressure sensors to obtain elevation changes of the monitoring points relative to the datum points, and then settlement changes are obtained through calculation. The monitoring device has the advantages of high measurement precision, good stability and simpleness and convenience in field mounting; and automatic monitoring is easily realized.

The invention relates to a high-efficiency defoaming device, in particular to a high-power ultrasonic high-efficiency defoaming device. Including foam suction pipe, power ultrasonic defoamer shell, jet extractor, compressed air pipe, control system signal line, acoustic energy converter, power ultrasonic defoamer, gas-liquid collector, exhaust pipe, liquid return pipe, foam sensor. Among them, the front end of the shell of the power ultrasonic defoamer is connected to the foam suction pipe, and the rear end is connected to the gas-liquid collector. Several ultrasonic energy converters are welded on the outside, and several power ultrasonic defoamers are installed inside, corresponding to the external ultrasonic energy converters. . The invention has the following advantages: no rotating parts, long service life, no pollution and denaturation during the defoaming process, and does not affect the liquid properties after defoaming; good defoaming effect, high efficiency, and low energy consumption; convenient application and high degree of automation, can Carry out automatic control and network remote control; wide application field, suitable for all areas where foam is generated; completely eliminate the use of defoamers and eliminate the adverse effects caused by the use of defoamers.

The invention discloses a body-free coaxial following synergistic perforator, which comprises a body-free perforator firing mount and a body-free perforating bullet arranged on the firing mount, wherein the body-free perforating bullet comprises a cartridge case, a powder-type cover and a high explosive, the front end outer wall of the cartridge case is provided with an initiation half slot and apressure wire, the front end inner wall of the cartridge case is provided with a booster hole, the back end of the cartridge case is provided with a fracturing powder box airtightly, and special fracturing powder is poured in the fracturing powder box and is distributed annularly along the inner wall of the fracturing powder box, wherein the special fracturing powder is prepared by evenly mixing ammonium permanganate of which the weight percentage is between 50 and 80 percent and aluminum powder of which the weight percentage is between 20 and 50 percent. The body-free coaxial following synergistic perforator has a simple structure and reliable mounting, the special fracturing powder is initiated and performs pulse fracturing on stratums directly while the powder-type cover forms high-speed jet flow to perform perforation, and the fracturing effect of the perforation is good, thus the body-free coaxial following synergistic perforator is particularly suitable for operations of high-density and low-permeability stratums.

The invention provides a thermal resistance test system, which includes a temperature-controllable heat sink, a thermal-resistance-varying module, a heat flow sensor, a temperature sensor, and a signal processing and control unit. The system performs a thermal resistance test through a thermal-resistance-varying compensation method; during work, the thermal-resistance-varying module can compensate the system with a heat flow, which is symmetric to a to-be-tested object on the basis of the heat flow sensor, so that heat flow output of the heat flow sensor is zero; and as a result, the thermal resistance value of the to-be-tested object is equal to that of the thermal-resistance-varying module. The compensation method can reduce and eliminate interference and test error, wherein the thermal-resistance-varying module can adapt with different to-be-tested objects having different thermal resistance values by pre-calibrating the varying rule of thermal resistance. The thermal resistance test method and the thermal-resistance-varying compensation method has excellent environment adaptability, short measurement time, high measurement precision and stability and low detection cost, is convenient to install and use on site, and greatly develops the application field of steady-state thermal resistance test methods.

The invention discloses a wireless communication clamp alternating current ammeter without a power supply, and relates to clamp alternating current ammeters. The ammeter solves the problem that when a socket is installed to the existing clamp ammeter, short-time outage is required, so that potential safety hazard exists. A measuring coil and a power supply coil are wound on an iron core; the measuring coil, the power supply coil and the iron core are arranged in sheaths; the current signal output terminal of the power supply coil is connected with the current signal input terminal of a rectifying and voltage-stabilizing circuit; the rectifying and voltage-stabilizing signal output terminal of the rectifying and voltage-stabilizing circuit is simultaneously connected with the power supply input terminal of a wireless communication circuit, a power signal input terminal of a single-chip microcomputer circuit and a power signal input terminal of a signal shaping circuit; clamp current signals collected by a clamp current sensor are input into the signal shaping circuit through the measuring coil; the signal output terminal of the signal shaping circuit is connected with the shaping signal input terminal of the single-chip microcomputer circuit; the wireless signal output terminal of the single-chip microcomputer circuit is connected with the signal input terminal of the wireless communication circuit. The ammeter is used for measuring clamping alternating current.

The invention relates to a high-efficiency enhanced type lead wire continuity device, belonging to a lead wire continuity hardware tool. The high-efficiency enhanced type lead wire continuity device is higher in installation efficiency and comprises a crimping pipe and a reinforced preformed armor rod, a lead wire is abutted by the crimping pipe, the reinforced preformed armor rod is wound and wrapped outside the lead wire and the crimping pipe, 2-5 reinforced preformed armor rods are connected into a whole in parallel and then are wound into a helical shape to form a preformed beam; the helical rotating direction of the preformed beam is the same with the rotating direction of the lead wire, the length of the preformed beam is 1.5-10 times of the length of the crimping pipe, and two ends of the preformed beam, which exceed the crimping pipe, have the same length; and the helical pitch I, which is corresponding to the crimping pipe, of the preformed beam is equal to the length of the crimping pipe, and the helical pitch II of two exceeding parts is 5-50 percent of the helical pitch I. In the invention, the preformed beam structure with single preformed layer and a plurality of parallel reinforced preformed armor rods is adopted, thus the high-efficiency enhanced type lead wire continuity device is convenient for installation. Compared with winding of single reinforced preformed armor rod, the invention has the advantage that the field installation and usage in the invention are more convenient.