32results about How to "No turning phenomenon" patented technology

The invention discloses a pipeline installing device in the technical field of mechanical installation. The pipeline installing device comprises a base plate, wherein a gate-shaped frame body is fixed to the base plate, a groove is formed in the inner side of the frame body in the vertical direction, an upper clamping plate and a lower clamping plate are arranged on the inner side of the frame body and are arc-shaped, rollers are arranged at two ends of the upper clamping plate and are connected in the groove in a rolling mode, the upper clamping plate is connected to the top of the frame body through a spring, a traction rope is further connected to the upper clamping plate, a hand wheel is arranged at the top of the frame body, a traction roper penetrates through the top of the frame body and is wound around the hand wheel. The lower clamping plate is fixedly connected to the base plate, a supporting rod is connected between the lower clamping plate and the base, the upper clamping plate and the lower clamping plate are arranged in a mirror symmetry mode, a round cavity for containing a pipeline is formed between the upper clamping plate and the lower clamping plate, and a fastener for fixing the upper clamping plate and the lower clamping plate is further arranged between the upper clamping plate and the lower clamping plate. By adoption of the pipeline installing device, operation is convenient, the pipeline can be firmly fixed, the pipeline does not rotate or slide, and the stability of the pipeline is good.

The invention provides a method for measuring air specific heat ratio through the adoption of the vibration method, relates to measurement of physical constant and overcomes problems existing in the conventional technology. The technical scheme adopted by the method is as follows: a cylinder with a sealed upper end and an opened lower end is provided, wherein a spirit bubble is arranged in the plane surface on the outer side of the upper end surface; one or more air holes are formed in the upper part on the side surface of the cylinder and can be sealed through sealing nuts; the cylinder is vertically fixed on a support; a spring is connected between the plane surface at the upper end on the inner side of the cylinder and a piston; the upper end of a suspension line is fixed to the center of the lower end face of the piston; a heavy object is tied to the lower end of the suspension line; when the air holes are open, the vibration period T1 of the heavy object equals to 2Pi(m / k)<0.5>; when all the air holes are sealed, the vibration period of the heavy object is T and the air specific heat ratio gamma equals to 4Pimh(T1<2> minus T<2>) / (r<2>PT<2>T1<2>), wherein Pi is the ratio of the circumference of a circle to its diameter, m is the quality sum of the piston and the heavy object, k is the elastic coefficient of the spring, P is the pressure of the sealed air and r is the inner diameter of the cylinder. The method has the benefits that the sealed air is elastic, the experiment principle is stricter, strict simple harmonic vibration is realized, rotation is avoided and the device is simpler in structure and lower in cost.

The invention relates to a method for measuring the specific heat ratio of air by the vibration of a piston in a cylinder. The method comprises the steps of connecting the two ends of a horizontally arranged transparent cylinder with gas containers respectively, forming an air hole which can be sealed in the outer side of each gas container, and arranging a horizontal bubble in the cylinder; unscrewing the gas containers respectively arranged at the two ends of the cylinder, plugging a piston body into the opening end of the cylinder, and overlapping the center of the piston body and the center of the cylinder; then, screwing the gas containers respectively arranged at the two ends of the cylinder, then screwing sealing caps respectively arranged at the outer sides of the gas containers at the two ends of the cylinder, turning on a power supply of a piece of electromagnet arranged at the outer side of the cylinder so as to move the piston body by the magnetic field, and cutting off the power supply to enable the piston body to vibrate under the elasticity of air. The specific heat ratio gamma of air is equal to 2mV / (r4T2P), wherein m is the mass of the piston body, r is the internal radius of the cylinder, V is the volume of the single-side sealed air, T is period of vibration, and P is atmospheric pressure value of the outside air. The method has the beneficial effects that the sealed air has good elasticity, the experiment principle is precise, a strict harmonic vibration is realized, the structure is simple, and the cost is low.

The method of measuring air specific heat capacity ratio by piston vibration in a single-end sealed cylinder. A transparent cylinder with an inner radius of r is divided into two sections, one section is sealed at the bottom and a pressure sensor is arranged. The signal line of the pressure sensor is connected to a digital oscilloscope. To measure the period T of vibration, the outer surface of the cylinder has a millimeter scale and a horizontal bubble along the length of the cylinder; inside the cylinder, there are two sealed pistons with a mass of m and a piston connecting rod. The piston connecting rod is Can be attracted by a magnetic field; put a magnet into the hollow tube end of the cylinder, touch the piston, the magnetic field attracts the stainless steel of the piston connecting rod, and then pull the piston connecting rod to the open end of the cylinder, when the magnetic field force is less than the air pressure difference The power generated, the two sealed pistons will break away from the magnet and vibrate, and the meter will measure the atmospheric pressure value P of the air; the specific heat capacity ratio of the air is given by the formula γ=4πmh / (r 2 T 2 P) calculation. The beneficial effects are: the sealed air has good elasticity; the experimental principle is more rigorous; it is a strict simple harmonic vibration; no rotation phenomenon occurs; the method for initiating vibration is simple and easy;

The invention discloses a stainless steel plate spring clamp. The stainless steel plate spring clamp comprises a U-shaped clamp body and a fixing device, wherein the fixing device comprises a rear sealing base, a stress rod and attaching plates, one end of the stress rod is fixedly installed on the front side of the rear sealing base, and reinforcing flat plates are fixedly installed at the positions, located on the two sides of the stress rod, of the front side of the rear sealing base; the reinforcing flat plates are fixedly connected with the stress rod, strip-shaped rotating grooves are formed in the bottoms of the attaching plates, supporting strips are fixedly installed at the tops of the reinforcing flat plates, rotating rods are fixedly installed at the tops of the supporting strips, the rotating rods are installed in the strip-shaped rotating grooves, arc-shaped circular grooves are formed in the tops of the reinforcing flat plates, springs are fixedly connected to the inner side walls, away from the opening ends, of the arc-shaped circular grooves, and arc-shaped rods are fixedly connected to the bottoms of the attaching plates. The stainless steel plate spring clamp is reasonable in design, long in service life and capable of effectively reducing the possibility of loosening.

The invention discloses a method for measuring an air specific heat ratio by vibration of a piston in a single-end sealed vertical cylinder. A horizontal bubble is arranged at the upper end face of the outer side of a cylinder with internal diameter r, an air hole and a millimeter dividing ruler are arranged at the vertical side surface of the cylinder, the cylinder is vertically fixed on a bracket; a sealing piston is arranged inside the cylinder, a metal half-sphere is fixed at the lower end of the piston, the symcenter of the outer surface of the half-sphere is fixed with one end of a pull rod, the other end of the pull rod is fixed with a pull ring; an air hole is opened, the piston is pushed into any position inside the cylinder by virtue of the pull rod, then a sealing cap of the air hole is sealed, the pull ring at the tail end of the pull rod is pulled, and then immediately released, the piston can vibrate under an elastic function of sealed air; the air specific heat ratio gamma is equal to 4 pi mh / (r<2>T<2>P). The method has the beneficial effects that the air is in a sealed state, the sealed air has good elasticity; an experiment principle is relatively precise; the vibration is strict simple harmonic vibration; the phenomenon of rotation of the prior art can not be caused; no inflating device is needed, the structure is relatively simple and the cost is relatively low.

The invention provides an oil pipe. The oil pipe comprises a first oil pipe, a second oil pipe, a connector, a first groove, a projection and an anti-rotation body, wherein the first oil pipe and the second oil pipe longitudinally extend, the connector is provided with a first end and a second end which are opposite, the first end is used for being connected with the first oil pipe, the first groove recessed from the end face of the second end to the first end is formed on the side wall of the connector, the projection protrudes out of the side wall of the second oil pipe and is provided with a first operating surface and a second operating surface which are opposite in the circumference of the second oil pipe, a notch is formed by the first operating surface, the second operating surface and the side wall of the second oil pipe adjacent to the first operating surface and the second operating surface; the anti-rotation body can be received in the first groove and the notch. By the oil pipe, the purpose for preventing rotation of the oil pipe at the joint is achieved.

The method of measuring air specific heat ratio by piston vibration in a sealed cylinder at one end. A transparent cylinder with an inner radius r is placed horizontally and divided into two sections. One section is a hollow cylinder with a bottom seal, and the other section is a hollow circular tube. Threaded sealing connection; the outer surface of the cylinder has a millimeter scale and a horizontal bubble along the length direction; the piston body is composed of two pistons and a stainless steel connecting rod; after the threaded connection of the cylinder is unscrewed, the hollow circle of the cylinder The pipe end is inserted into the piston body, and then the cylinder is sealed by threads, and a magnet is inserted into the hollow pipe end of the cylinder. The magnetic field attracts the stainless steel connecting rod and pulls the piston body to move. The piston body will break away from the magnet, and the piston body will vibrate. ; Air specific heat capacity ratio γ is γ=4πmL / (r 2 T 2 P), where m is the mass of the piston body, L is the length of the sealed air at the equilibrium position, r is the inner radius of the cylinder, T is the vibration period, and P is the atmospheric pressure value of the outside air. The beneficial effect is that the sealed air has good elasticity; the experimental principle is more rigorous; it is a strict simple harmonic vibration; the vibration starting method is simple and easy; the structure is simpler and the cost is lower.