31results about How to "Reduce medium flow rate" patented technology

The invention relates to the field of valves, in particular to a Champagne tower type multi-stage throttling control valve applied to high-pressure-difference medium noise reduction cavitation damageresistance. The Champagne tower type multi-stage throttling control valve comprises a valve body, a valve cover, a throttling sleeve and a valve element. The appearance of a sleeve cavity of the throttling sleeve is in a ladder hole shape with two or more layers, the appearance of the valve element is in a ladder shaft shape with two or more layers and coaxial with the throttling sleeve, the number of shaft shoulders of the valve element is smaller than or equal to the number of hole shoulders of the sleeve cavity of the throttling sleeve, therefore, in the axial direction, each shaft shoulderof the valve element can be in seal face fit with the corresponding hole shoulder of the throttling sleeve, the hole shoulder of the throttling sleeve and/or the shaft shoulder of the valve element are/is axially or slantly provided with a runner groove, the structure is compact and simple, the action reliability is high, the valve machining difficulty and cost can be further reduced while effective noise reduction and cavitation damage resistance functions are achieved, and the valve is particularly suitable for being used in the high-pressure-difference medium control condition.

The invention provides an air energy water heater, and relates to the field of water heaters. The air energy water heater comprises a heat exchange box, wherein a heat exchange tube is arranged in theheat exchange box; the top end of the heat exchange tube is fixedly connected to a first rotary mechanism; the heat exchange tube communicates with the inner part of the rotary mechanism; the first rotary mechanism is fixedly arranged in the heat exchange box; the bottom end of the heat exchange tube is fixedly connected to a second rotary mechanism; and the second rotary mechanism is fixedly arranged in the heat exchange box. In the air energy water heater, the heat exchange tube rotates to generate friction with water, so that attachment of water scales is reduced, heat conduction of the heat exchange tube is guaranteed, water molecule motion speed can be increased, and therefore, heat exchange efficiency is improved, flowing time, in the heat exchange tube, of a medium is shortened, and the high-temperature medium is in sufficient contact with a heat exchanger to improve heat exchange degree; meanwhile, the medium can be sufficiently liquefied after releasing energy, so that a throttle device connected behind the heat exchanger is protected; and a connecting shaft is kept in sealing with the first rotary mechanism and the second rotary mechanism through a sealing ring.

The invention relates to a control valve 1), in particular an angle control valve and double control valve, for extreme control applications, preferably for discharge or reduction for hot separators and vacuum distillation columns. The valve piston 12 and the valve head 13 are designed as one piece and consist of tungsten carbide. Furthermore, the control valve comprises different constructions across the entire control valve range. For example, the valve housing 100, the valve seat 6 and a packing retainer 14 are optionally shaped such that the inner hollow space tapers continuously from the valve inlet to the valve seat 6, which prevents evaporation upstream of the valve seat 6. Furthermore, the double control valve consists of a large sub-valve 36 and at least one small sub-valve 37, wherein the large sub-valve 36 is designed as an adjustable open-closed piston valve and the small sub-valve 37 is designed as a control valve.

The invention discloses a condensation water pipe and a method for reducing vibration of the condensation water pipe. The method comprises the following steps that the condensation water pipe is simulated; the pressure change of the lowest point of a continuous vertical pipe segment of the condensation water pipe along with running time and the liquid phase distribution of the vertical pipe segment are monitored; the time corresponding to the maximum pressure value of the lowest point is obtained, and the liquid phase distribution, corresponding to the time, of the radial section of the vertical pipe segment is obtained; a cavitation area of the vertical pipe segment is obtained according to the liquid phase distribution of the radial section; and the maximum continuous vertical height not larger than the height of the cavitation area is obtained according to the height of the cavitation area; and according to the maximum continuous vertical height, the vertical pipe segment is provided with bent pipes in a segmented manner, and/or restriction orifices are arranged in the vertical pipe segment corresponding to the front end of the cavitation area. According to the scheme, it is found that vibration of the vertical pipe segment of the condensation water pipe is mainly caused by the cavitation effect; the medium flowing resistance is increased in the manner of arranging the bent pipes and the restriction orifices, the flowing speed is lowered, and cavitation is restrained; and therefore pipe vibration is effectively reduced.

The invention discloses a silent throttling stop air release valve, and belongs to the field of valves. The silent throttling stop air release valve comprises a valve body, a valve rod, a support and a valve deck. A denoising assembly and a valve clack assembly are arranged in the valve body. The denoising assembly comprises a valve sleeve and a plate baffle. The valve sleeve is cylindrical and is vertically installed on the same axis as the valve rod. At least one set of throttling grooves of different lengths are formed in the circumference of the lower portion of the valve sleeve. The bottoms of the throttling grooves are located on the same axis. The throttling grooves are distributed in a symmetric periodic mode. The plate baffle is vertically arranged in an inlet passageway of the valve body. The plate baffle is in a hollow annular shape. Asymmetrical throttling holes are formed in the circumferential surface of the plate baffle. By means of the silent throttling stop air release valve, the problem that noise is produced by an existing throttling stop air release valve is effectively solved.

The invention discloses a novel triple-seal anti-scouring stop valve which is widely applied to power station boilers and turbine systems. The novel triple-seal anti-scouring stop valve comprises a valve body, a liner, a valve seat, an auxiliary valve clack, an auxiliary valve gland, a main valve clack, a main valve gland, a spring, a throttle sleeve, a valve rod, a valve cover and valve rod, anda throttle window. The valve seat and the valve body are sealed by compressing the liner. Through the main valve gland, the valve rod drives the valve clack to be opened to move up and down along thethrottle sleeve. The main valve clack and the auxiliary valve clack are connected through the auxiliary valve gland. The main valve clack is provided with the spring. When the valve is opened, the main valve clack, the auxiliary valve clack and the throttle window are opened sequentially. When the valve is closed, the process is opposite. The novel triple-seal anti-scouring stop valve with a novelstructure has the advantages that three seals, including an annular seal and two conical-surface seals (or flat-surface seals) are realized when the valve is closed, damage of impurities to sealing surfaces is avoided, and scouring of media on main and auxiliary sealing surfaces is reduced, so that service life of the valve is prolonged, and good sealing effect is achieved.

The invention discloses a slurry ball valve and relates to a valve. The slurry ball valve comprises a valve body, a ball and two valve decks arranged on the two opposite sides of the ball. The hole diameters of the ends, close to the ball, of inner holes of the valve decks are larger than the hole diameters of the ends away from the ball, of the inner holes, a valve seat supporting ring is arranged between the valve deck located on the upstream and the ball, a valve seat is arranged at the end, close to the ball, of the valve seat supporting ring, the outer side wall of the valve seat supporting ring is in a stair shape, the outer diameter of the end, close to the ball, of the valve seat supporting ring is larger than the outer diameter of the end, away from the ball, of the valve seat supporting ring, O-shaped sealing rings are arranged on the surfaces of the two side walls, different in outer diameter, of the valve seat bearing ring respectively in the circumferential direction to form two radial sealing faces, a pre-tightening spring is arranged between the valve seat supporting ring and the corresponding valve deck, and the pre-tightening spring is arranged between the upper O-shaped sealing ring and the lower O-shaped sealing ring in the horizontal direction. The pre-tightening spring cannot be stuck by medium crystal substances, washing to the sealing faces by media can be overcome, the abrasion of the ball can be reduced, the service life of the valve can be prolonged, and high practicability is achieved.

The invention relates to the field of ball valves, in particular to a square hole flow channel wear-resistant fine-adjustment ball valve. According to the technical scheme, the square hole flow channel wear-resistant fine-adjustment ball valve comprises a valve body; a valve seat is mounted in the valve body; a ball body is arranged in the valve seat in a sleeved manner; a valve rod is connected to the ball body and arranged in the valve body in a sleeved manner; the ball body and the valve seat are each internally provided with a square hole; and the square hole of the ball body and the square hole of the valve seat are both horizontally formed. By means of the square hole flow channel wear-resistant fine-adjustment ball valve, scouring to which a ball body flow channel and a valve seat flow channel is subjected is reduced, the open degree is adjusted linearly, the rotating angle of the ball body is small in the switching-on and switching-off process, and the scouring time is shortened; and the problems that an existing ball valve is scoured severely, and the open degree cannot be adjusted linearly are solved.

The invention discloses an expansion valve, which comprises a valve body 1. A combined sealing ring 2 and a plunger piston 3 for controlling medium flow are arranged in a cavity inside the valve body 1; the upper part of the combined sealing ring 2 is provided with a valve cover 6 for positioning the combined sealing ring 2, and the valve cover 6 is fixedly arranged on the valve body 1; a valve rod assembly 5 is arranged on the plunger piston 3, and the lower part of the valve rod assembly 5 is provided with a condensate baffle plate 4; a conical intercepting screen 9 is arranged at a lower medium inlet A of the valve body 1, and the upper end of the conical intercepting screen 9 is provided with a hemispherical steam screen 8. By simplifying the internal structure of the expansion valve and a control element, the expansion valve reduces the medium flowing energy loss, has large treatment amount of refrigerating medium, simplifies a driving control device, and is convenient to maintain and operate.

The invention relates to a key groove type safety valve. A flat key type step is arranged on the surface, directly facing a valve body inner cavity, of a valve seat and internally sinks to form a flat key type groove. A plurality of high-pressure medium flowing channels are distributed in the flat key type groove. The high-pressure medium flowing channels communicate with a plurality of low-pressure medium flowing channels distributed outside the flat key type step through the valve body inner cavity. A valve plate assembly is arranged at a valve body and comprises a flat key type valve plate, double springs acting on the flat key type valve plate and double valve sleeves. The valve plate assembly and the flat key type step are arranged correspondingly so as to open or close the high-pressure medium flowing channels. The safety valve adopts the flat key type valve plate, so that the flowing area is increased, and the flowing speed of a medium become low; under the condition of the same flowing area, the flat key type valve plate bears less force, bearing force of the springs is improved, accordingly the using reliability of the valve can be improved, and the service life of the valve can be prolonged; and in addition, by adopting the double-spring and double-guiding structure, the bearing force of the single spring can be decreased by one half, and stationarity is better through double guiding.

The invention provides a vertical type one-way combination valve for a reciprocating type gas-liquid two-phase mixture conveying pump, which mainly comprises a valve body, a valve inlet, a valve outlet, an inlet chamber and an outlet chamber, wherein the valve outlet is arranged at an inner ring of the valve body, the valve inlet is arranged at an outer ring of the valve body, a valve ring is arranged in the inlet chamber, a through hole is arranged in the valve body between the inlet chamber and the outlet chamber, and the valve outlet is provided with a valve plate. In the vertical type one-way combination valve for the reciprocating type gas-liquid two-phase mixture conveying pump, as the valve outlet is arranged at the inner ring of the valve body, and the valve inlet is arranged at the outer ring of the valve body, the flow path area of the valve inlet is increased, and the flow rate of a medium at the valve inlet is decreased, so that energy waste can be reduced, and the suction performance of the pump can be improved; and meanwhile, as a flow dividing hole is arranged in the valve body between the inlet chamber and the outlet chamber, a double-flow path structure is realized, and the flow rate of the medium at the valve inlet is further decreased, so that the opening height of the valve ring can be reduced, a lag angle of closing the valve ring can be reduced, and the pressure loss and the energy waste can be reduced.

The invention relates to a high-temperature hexagonal hole wear-resisting ball valve. The high-temperature hexagonal hole wear-resisting ball valve comprises a valve body, a valve deck, a ball body and a valve rod, the ball body is arranged in an inner cavity of the valve body, the valve deck is fixed on the front side of the inner cavity of the valve body, the valve rod is connected with the upper end of the ball body, a front valve seat and a rear valve seat are arranged on positions, located on the front side and the rear side of the ball body, of the inner cavity, the rear valve seat is pressed tightly and fixed in the valve body through a valve seat pressing ring, the valve seat pressing ring is fixed in the valve body through a bolt, the front valve seat is arranged in the valve deckin a penetrating manner, a belleville spring set which enables the front valve seat to press tightly the ball body is arranged between the valve deck and the front valve seat, hexagonal hole runnersare formed in the ball body, the hexagonal hole runners are formed in the front valve seat and the rear valve seat which are matched, a valve rod bearing is installed between the valve rod and the valve body in a sealing manner, the upper end of the valve rod extends to the outer side of the valve body and is connected with a driving sleeve in a key manner, the driving sleeve is rotationally connected with a bracket, and the bracket is fixed on the upper end of the valve body. According to the high-temperature hexagonal hole wear-resisting ball valve, the flow area at the moment of opening isincreased, the medium flow speed is reduced, the scouring resistance of the ball body is improved, the service life of the valve is prolonged, and the daily maintenance cost is reduced.

The invention provides a forged isolation type vacuum starting valve which comprises a valve body, a valve cover, an end cover, a floating cylinder and a valve base. An impact preventing structure forpreventing water flow from impacting the floating valve is arranged on the bottom of a lower valve cavity in a water inlet of the valve body. The valve base is an isolation type valve base mechanism.The isolation type valve base mechanism is composed of the valve base arranged on the partition plate, a floating cylinder guide inner ring arranged on the lower portion of the valve base, and a sealing ring arranged on the floating cylinder guide inner ring. An adjusting valve clack operating back and forth from bottom to top forms a lower portion closing or opening mechanism between the lower valve cavity and an upper valve cavity of the valve body. Meanwhile, a check valve clack arranged on the end cover forms a closing or opening mechanism between the lower valve cavity and the upper valve cavity of the valve body and a water outlet of the valve body. A pressure adjusting and relieving mechanism composed of the adjusting valve clack, an adjusting guide part, a spring, an adjusting piston and an adjusting screw is arranged between the partition plate and the end cover.