79results about How to "Large amount of compensation" patented technology

The invention provides a rigid contact net expansion joint, which belongs to the field of rail transit equipment and solves the problems that the existing expansion joint has low compensation amount to cause high total manufacturing cost and the like. The rigid contact net expansion joint is arranged between two bus bars. The rigid contact net expansion joint is characterized by comprising a fixed joint and a movable joint which can conduct electricity; the fixed joint and the movable joint are used for fixing with the connecting end of one of the bus bars respectively; a guide piece with electric conductivity for connecting the fixed joint and the movable joint is arranged between the fixed joint and the movable joint; the fixed joint is fixed with the guide piece; the movable joint can move along with the guide piece; and a contact line 1 for transmitting current to an electric system of a train is fixedly arranged on the guide piece. The rigid contact net expansion joint is a plug-in expansion joint, and the adjacent two bus bars and the expansion joint are arranged on the same straight line, so the expansion joint is favorable for improving the utilization rate of the bus bars, equivalently improving the length of an anchorage section, and has large compensation amount.

The invention discloses a switching converter and a control circuit and control method thereof. The control circuit comprises a ripple compensation module. According to a switching node voltage between a first switching tube and a second switching tube, a first driving signal of the first switching tube and a second driving signal of the second switching tube, the ripple compensation module generates a slope compensation signal and a direct current compensation signal, wherein the direct current compensation signal is a sampling signal of the slope compensation signal; a control circuit adoptsthe slope compensation signal to improve transient characteristics, and the direct current compensation signal is adopted to eliminate imbalance introduced by the ripple compensation module.

The invention discloses a radial compensation bus bar used for a high-voltage switch in the technical field of high-voltage electrical appliances. The radial compensation bus bar used for the high-voltage switch comprises three groups of conductive components with the same structure, connecting pieces, and two basin-type insulators, two corrugated pipes and a shell connected with the connecting pieces, wherein a first basin-type insulator and a first corrugated pipe as well as a second basin-type insulator and a second corrugated pipe are respectively arranged at the two ends of the shell fixedly; the two ends of a first conductive component, a second conductive component and a third conductive component are respectively and fixedly connected with the first basin-type insulator and the second basin-type insulator positioned at the two ends of the shell; and the conductive components are arranged in the shell in a sealing way. The radial compensation bus bar used for the high-voltage switch meets the compensation for the axial and radial deformation in gas-insulated metal-enclosed switchgear (GIS), the adjustment of an installation error and the compensation for the deformation of expansion caused by heat and contraction caused by cold of the bus bar per se, has a large compensation amount for radial deformation, and can keep high performance of the electrical appliances.

The invention discloses a compound compensator for a high pressure pipeline, belonging to the technical field of the compensating equipment of the heat distribution pipeline. The compound compensator comprises an inner pipe, an anticorrosive pipe, a gland cover flange, a wear sleeve flange, a wear sleeve, a reduction adapter, a guide pipe, a corrugated pipe, a pressure head and the like, wherein the wear sleeve is ringed on one end of the inner pipe, the outer ring of the outer end of one side of the wear sleeve is provided with the wear sleeve flange, the end on other side of the wear sleeve is welded and fixed with a reduction adapter supporting platform integrated with the reduction adapter; the reduction adapter and the inner pipe are separately sleeved on the two ends of the guide pipe, one end of the guide pipe is fixedly connected with the reduction adapter, the corrugated pipe is arranged between the guide pipe and the wear sleeve, and the two ends are butted with the pressure head and the reduction adapter and are connected and fixed through welding. By adopting the structure, when the inner pipe is extruded and pushed by the axial heat expansive force, the axial displacement can be absorbed through the flexible deformation of the corrugated pipe; the coaxial, synchronous and integral movement of the anticorrosive pipe and the like along with the inner pipe can be performed along the axial direction, thus the compound compensator can be used as the buried pipeline or the overhead pipeline; in addition, the compound compensator has multifunctional characteristics of being used as the gas or liquid pipeline and also as the slurry pipeline.

The invention discloses a plastic pipeline expansion piece belonging to the technical field of pipeline compensation devices. The plastic pipeline expansion piece includes a core pipe, an outer connecting sleeve B, a convex outer ring of the outer connecting sleeve B, a plunger piston inner pipe framework, a plunger piston inner pipe, and a ring seal framework, which are all connected into an integrative structure, wherein the plunger piston inner pipe is provided with a convex outer ring of the plunger piston inner pipe, and the ring seal framework is provided with an O-type seal ring A and an O-type seal ring B. When one end of the core pipe is subjected to pushing of axial thermal expansion force, the outer connecting sleeve B, the core pipe, the plunger piston inner pipe provided with the convex outer ring of the plunger piston inner pipe and connected on the plunger piston inner pipe framework, and the ring seal framework provided with the O-type seal ring A and the O-type seal ring B can move wholly, coaxially and synchronously in the axial direction through the convex outer ring of the outer connecting sleeve B which is propped against a corrugated pipe capable of deformation by self-flexibility. Through adopting the structure, the plastic pipeline expansion piece has multifunctional characteristics of reducing pipeline stress, enhancing sealing performance, improving loading capacity, having corrosion protection efficacy, and realizing large compensation dosage and broad application range.

The invention discloses a coaxial two-way external pressure type anti-twisting expansion joint. The coaxial two-way external pressure type anti-twisting expansion joint is composed of inner tubes, outer joints, corrugated tubes, inner joints, a key, an outer tube and pins jointly. The inner wall of the middle section of the outer tube is fixedly connected with the key which is arranged in the axial direction. The inner tubes extend into an inner cavity of the outer tube from the two ends of the outer tube respectively. The inner joints, the corrugated tubes and the outer joints are arranged on the overlapping sections between the inner tubes and the outer tube in a sleeved mode to form axial compensation assemblies which are independent of one another, wherein the inner joints, the corrugated tubes and the outer joints are sequentially connected in a sealed mode. The outer wall of each inner joint is provided with an axial open slot matched with the key. The inner joints and the key move relatively to form an axial compensation assembly displacement track structure. Orifices in the two ends of the outer tube are in sealing connection with the matched outer joints respectively to form two symmetrically-arranged axial compensation assembly integrated structures. The coaxial two-way external pressure type anti-twisting expansion joint is simple in structure, high in integration level and capable of conducting independent one-way compensation and synchronous two-way compensation. Built-in coaxial displacement tracks are coaxial, do not influence axial compensation and have an anti-twisting function, so it can be guaranteed that the corrugated tubes only conduct axial displacement movement and the service life of the expansion joint can be prolonged.

The invention discloses a rotating connector. The rotating connector comprises a shell (1) and is characterized in that a spring (2), a spring cushion (10), a rubber cushion (3), an O-shaped ring (4) and a seal ring (5) are arranged in the shell (1), a shaft clamp (8) is arranged in a groove of a hollow shaft (9), a bearing (6) is arranged between an inner hole of the shell (1) and the external diameter part of the hollow shaft (9), lubricant oil is injected into the bearing (6) through an oil nozzle II, and an observation hole (12) is used for a worker to observe whether leakage exists or not. A hole check ring (7) is used for performing limiting to connect all components into a whole. The rotating connector has the advantages of being simple in structure, stable in supporting and large in bearing pressure, the resisted pressure is 2.0 MPa, the revolving speed is 0-500 r/min, the rotating connector is suitable for the operation of a pipeline, and media are cooling water, saturated steam, conduction oil, air and the like.

The invention provides a sleeve type compensator, and relates to the technical field of compensating devices of thermal fluid pipelines. A body pipe is coaxially connected to the outer wall of the rear half segment of a telescopic pipe of the compensator in a sleeved mode, a gland is tightly connected between the front end of the body pipe and the outer wall of the telescopic pipe in a sleeved mode, a plurality of sealing parts are tightly arranged on the rear side of the gland, a first check ring is tightly arranged on the rear sides of the sealing parts, a first supported flange is tightly connected to the outer wall of the front end of the gland in a sleeved mode, a second supported flange is tightly connected to the outer wall of the front end of the body pipe in a sleeved mode, the first supported flange and the second supported flange are fixedly connected through a plurality of sets of bolts, nuts and flat gaskets, a second check ring is welded to the outer wall of the rear end of the telescopic pipe, and a bushing ring is welded to the inner wall of the rear end of the body pipe. The sleeve type compensator has the advantages of being large in compensation amount, convenient to maintain, high in safety performance, long in service life, wide in using range, low in constructing cost of projects, wide in market prospect and extremely high in research and design value.

The invention relates to a transverse control method of single-side missile hanging landing, and belongs to the field of aviation flight. The method comprises the following steps that 1) an integral quantity is taken from a (phi<g>) calculation formula (delta) before a course aligning phase is turned to, and turned into a calculation formula in the course aligning phase, and the amplitude ofthe (phi<g>) is not triggered; 2) a mean value of the present roller angle of a UAV in multiple continuous beats during cut-in is taken as the feedback roll angle, and a mean value of multiple continuous beats during cut-in is taken as the integral quantity; and 3) a single-side missile hanging control strategy is widened from only the course aligning phase to linear downslide, trajectory flareout and course aligning phases, and the limit of the relative height of 150m during cut-in is set for the trajectory flareout phase. The roll angle is not limited to a given limit value, a transverse asymmetric aileron tromming tab compensation quantity is added to avoid the UAV from influence of the given roll angle limit value, and the original given roll angle limit value can play original roles.