33results about How to "Avoid mutual leakage" patented technology

The invention discloses a powerful and mechanical automatic-locking hydraulic cylinder, and belongs to the technical field of hydraulic cylinders. The two ends of a cylinder barrel are sealed by a cylinder cover and a cylinder bottom respectively. A guiding column of the cylinder cover is sleeved with a spring. The spring is sleeved with a brake block. The two ends of the spring abut against the cylinder cover and the brake block respectively. The outer circumferential face of the large diameter of the brake block is in sealing fit with the inner circumferential face of the cylinder cover. The end face of the end, with a large-diameter hole, of a locking block abuts against the end face of the step of an inner hole of the cylinder barrel, and the other end face of the locking block abuts against the end face, located at the portion of the cylinder barrel, of the cylinder cover. After a steel ball is put into a steel ball installation hole of a piston, the steel ball installation hole of the piston is matched with an inner hole of the cylinder barrel, and an annular groove of the piston corresponds to a rodless cavity oil port in the cylinder barrel. One end of a piston rod is fixed to a piston rod installation hole of the piston, and the other end of the piston rod penetrates through the cylinder bottom to be located outside the cylinder barrel. According to the powerful and mechanical automatic-locking hydraulic cylinder, the requirement for automatic locking after the piston rod is completely retracted can be met, and the locking state can be kept for a long time under the situation that pressure relief of a hydraulic system is completed or leakage happens until unlocking is actively achieved.

The invention relates to a method for increasing air tightness of a coke oven top and an oven top structure. The coke oven top is divided into two structures of an oven top upper portion and an oven top lower portion, wherein the oven top upper portion and the oven top lower portion are respectively built as independent whole bodies, and a sliding layer is arranged between the oven top upper portion and the oven top lower portion; when an oven is dried, after the over top upper portion and the oven top lower portion are respectively swelled, mortars are grouted via a grouting hole on the oven top upper portion to fill a top gap on the oven top upper portion and a gap between the oven top lower portion and a big protective plate so as to prevent mutual leakage between adjacent carbonization chambers and assure the leakproofness of the coke oven. The invention has the advantages that the situation that the oven top upper portion is swelled together with the oven top lower portion to cause damages due to non-uniform swelling at the oven top upper portion and the oven top lower portion of the coke oven can be effectively solved.

The invention relates to the field of thermal energy and power engineering, in particular to a heat-pipe heat exchanger and a heat exchange method. The heat-pipe heat exchanger comprises a heat pipe housing, at least one radiator, at least one heat collector, a heat insulating layer and an exhaust liquid-filling port, wherein the heat pipe housing comprises a single inner space, a heat transfer medium is filled into the lower portion of the inner space, each radiator is filled with a radiating medium, the radiators are positioned on the lower portion of the inner space and immersed in the heat transfer medium, each heat collector is filled with a heat collection medium, the heat collectors are positioned on the upper portion of the inner space and above the liquid level of the heat transfer medium, the heat insulating layer warps the outer wall of the heat pipe housing, the exhaust liquid-filling port is reserved at the top of the heat pipe housing or on the upper portion of the lateral wall of the heat pipe housing, the heat transfer medium is filled into the heat pipe housing through the exhaust liquid-filling port, and gas in the heat pipe housing is exhausted through the exhaust liquid-filling port. The heat-pipe heat exchanger is simple in structure, convenient in maintenance and better in heat exchange effect.

The invention relates to a novel crude oil normal-pressure tower top oil-gas heat exchanger. A cover plate part of a floating head of the heat exchanger is in a groove shape, the structure can increase the depth of an arc so that sufficient baffling space can be provided when media in a tube pass reverse on the floating head, and the tube pass media can circulate smoothly; sealing match of trapezoid grooves is adopted for a floating tube plate and a floating flange and hook-ring matched faces, so that the sealing effect between the floating head tube plate and the floating head flange and hook rings is improved, and the problems that the tube pass media and shell pass media leak or seep or mix mutually to increase complexity of the corrosion environment, lead to corrosion and leakage and cause pollution to the environment can be effectively avoided; due to the arrangement of an LX-03 anticorrosive coating structure, corrosion resistance and scouring resistance of the heat exchanger are greatly improved, service life of the heat exchanger is effectively prolonged, industrial usage cost of the heat exchanger is reduced, economic losses caused by maintenance and replacement are reduced substantially, production efficiency is improved, and environmental pollution caused by leakage of the heat exchanger is reduced further.

The invention relates to the technical field of PCR laboratories, in particular to a PCR laboratory with environmental barrier. The PCR laboratory with environmental barrier comprises a reagent preparation room, a sample preparation room, a proliferation room and a product analysis room arranged sequentially from left to right, wherein the wall body between the reagent preparation room and the sample preparation room is provided with a first transfer window; the wall body between the sample preparation room and the proliferation room is provided with a second transfer window; and the wall bodybetween the proliferation room and the product analysis room is provided with a third transfer window. The PCR laboratory with environmental barrier has the beneficial effects that the laboratory isan innovative achievement through many years of practice, research and summary; and the technology of the invention is mainly embodied in the following aspects: structural divisions are laid firstly in a scientific and reasonable technology; setting in a scientific and reasonable airflow pressure gradient direction is firstly carried out; a reasonable gate opening direction of each functional roomis firstly carried out; and a personnel flow and sample flow direction is firstly laid in a reasonable mode.

The embodiment of the invention relates to the technical field of a vanadium battery, and discloses a battery panel and the vanadium battery. The battery panel comprises a shell, wherein an installation hole is formed in the shell and is used for installing an electrode plate, the shell is provided with a first rubber sealing ring along a part near to an outer circle of the installation hole, and the first rubber sealing ring protrudes out of a surface of the shell. Compared with the prior art, the battery panel has the advantages that the length of the first rubber sealing ring selected by the battery panel is relatively short, thus, the fabrication coat of the first rubber sealing ring is reduced, and the fabrication cost of the vanadium battery is reduced; since the sealing range of the first rubber sealing ring is small, the area of an ion film matched with the first rubber sealing ring also can be correspondingly reduced, the area of the ion film is only enabled to be slightly larger than an encircling area of the first rubber sealing ring, and the first rubber sealing ring can be attached onto an edge of the ion film; and the ion film is very high in cost, thus, the area of the ion film is also reduced, and the manufacturing cost of the vanadium battery is reduced.

The invention relates to a connecting component, particularly to a pneumatic rotary joint. The pneumatic rotary joint comprises a rotary spindle, a joint body is coaxially connected at one end of the rotary spindle, a first vacuum gas chamber is arranged in the rotary spindle, a second vacuum gas chamber is arranged in the joint body and communicated with the first vacuum gas chamber, the rotary spindle is provided with a vacuum outlet communicated with the first vacuum gas chamber, the joint body is provided with a vacuum port communicated with the second vacuum gas chamber, an inflation spindle pipe is arranged at the axis position of the rotary spindle and the joint body, the first vacuum gas chamber and the second vacuum gas chamber evenly surround the inflation spindle pipe, and an inflation connection is fixedly arranged at one end far away from the rotary spindle on the joint body and communicated with the inflation spindle pipe. The pneumatic rotary joint has the advantages of being high in tightness, capable of guaranteeing an inflation path and a vacuum pumping path to be parallel and to surround the rotation axis evenly and the like.

The invention discloses a floating piston sealing structure of an inflatable shock absorber. For the annular guide belt, a gas-liquid sealing ring is fixed on the middle circumference of the outer wall of the floating piston; The invention can not only improve the sensitivity and stability of the movement of the floating piston and the piston rod, but also has good wear resistance, prevents the mutual leakage of internal hydraulic oil and high-pressure gas, and improves the overall service life.

The invention relates to a novel regeneration recycle gas aftercooler. Baffle plates are in a D type, the radial-direction length of the incomplete part of each baffle plate is one fifth the inner diameter of a shell, and the distance between every two adjacent baffle plates is one second the inner diameter of the shell; sealing match of trapezoid grooves is adopted for a floating tube plate and a floating flange and hook-ring matched faces. Due to the arrangement of the baffle plates and the distances, while flow velocity of fluid media in a shell pass is improved, the suitable turbulence degree of the fluid in the shell pass is achieved, and the heat exchange effect is optimum; due to the trapezoid groove type sealing, it can be effectively avoided that tube pass media and shell pass media leak or seep or mix mutually to increase complexity of the corrosion environment, lead to corrosion and leakage and cause pollution to the environment; due to a coating structure on the surface of a tube pass and a clad layer on the surface of the shell pass, corrosion resistance and scouring resistance of the tube pass and the shell pass can be improved, and economic losses caused by maintenance and replacement are reduced.

The invention discloses a high-efficiency sealed multi-head wire drawing machine, which includes a transmission box, a wire drawing wheel shaft, a wire drawing wheel and a wire drawing chamber. There is a sealing spacer, the sealing spacer is sealed and fixedly connected with the drawing wheel shaft, and a sealing seat is provided between the bearing and the drawing wheel, and the sealing seat is sealed and fixedly connected with the transmission box; a sealing seat is provided between the outer ring of the sealing spacer and the inner hole of the sealing seat An organic oil seal ring and a drawing oil sealing ring, the oil sealing ring is adjacent to the bearing, the drawing oil sealing ring is adjacent to the drawing wheel, and a drawing oil discharge channel is arranged between the drawing oil sealing ring and the drawing wheel, and the drawing oil discharge channel is connected to the drawing wheel The wire drawing chamber is connected, and a leak detection channel is provided between the wire drawing oil seal ring and the engine oil seal ring, and the leak detection channel is connected with the inspector. The high-efficiency sealing multi-head wire drawing machine can not only ensure the sealing between the transmission box and the wire drawing chamber, but also detect the failed sealing device in time to ensure the production efficiency of the wire drawing machine.

The invention discloses a heat exchanger with a cold fluid and a hot fluid not leak through with each other. The shell side of a high-position cold fluid container (1) passes through the cold fluid. The shell side of a low-position hot fluid container (3) passes through the hot fluid. A hot fluid inlet (9) and a hot fluid outlet (10) are respectively installed at the top and the bottom of the hot fluid container (3). A cold fluid inlet (11) and a cold fluid outlet (12) are respectively installed at the top and the bottom of the cold fluid container (1). A condensation heat exchange tube (2) is arranged in the cold fluid container (1). An evaporation heat exchange tube (4) is arranged in the hot fluid container (3). The lower end of the condensation heat exchange tube (2) is connected with the lower end of the evaporation heat exchange tube (4) through a condensed liquid return tube (5) and the upper end of the condensation heat exchange tube (2) is connected wit the upper end of the evaporation heat exchange tube (4) through a steam ascending tube (6) to form an independent closed circulation loop. The cold fluid and the hot fluid respectively pass through two containers, the occurrence of mutual leakage between the cold fluid and the hot fluid is absolutely avoided and the operation safety of the equipment is ensured.

The invention discloses a sealing structure of a transmission box of a wire drawing machine, which comprises a transmission box, a wire drawing wheel shaft, a wire drawing wheel and a wire drawing chamber. There is a sealing spacer between the wheels, and the sealing spacer is sealed and fixed with the wire drawing wheel shaft. There is also a sealing seat between the bearing and the drawing wheel, and the sealing seat is sealed and fixed with the transmission box; the outer ring of the spacer sleeve is connected with the sealing At least two oil sealing rings are arranged between the inner holes of the seat, the oil sealing rings are adjacent to the bearing, and an oil discharge channel is arranged between two adjacent oil sealing rings and between the oil sealing ring and the bearing, and the oil discharge channel It communicates with the inner cavity of the transmission box; there is also a drawing oil sealing ring between the outer ring of the sealing spacer and the inner hole of the sealing seat, and the drawing oil sealing ring is adjacent to the drawing wheel. The sealing structure of the transmission box of the wire drawing machine can ensure that the lubricating oil in the transmission box is effectively sealed to prevent the mutual leakage of the lubricating oil and the wire drawing oil.

The invention provides a device and a method for safe compatibility of multiple power supply modules. The device comprises a plurality of power supply input interfaces used for different use scenes; the priority of the control output sequence of the power input interface is set according to different use scenes; each power input interface is connected with one automatic control unit; the automatic control units are controlled by output voltages of the respectively connected power supply input interfaces; the automatic control unit connected with the low-priority power supply input interface is connected with the output ends of all the power supply input interfaces with the priority higher than that of the low-priority power supply input interface; and when the plurality of power input interfaces are connected with an external power supply, the output voltage of the power input interface with the high priority turns off the automatic control unit connected with the power input interface with the low priority, and the power input interface with the highest priority in the plurality of power input interfaces connected with the external power supply turns on the automatic control unit connected with the power input interface. Therefore, the plurality of power input interfaces are connected with an external power supply without mutual interference.

The invention relates to a hydraulic braking anti-lock braking system of an all-terrain vehicle. The system comprises a hydraulic brake unit and an anti-lock unit, wherein the hydraulic brake unit comprises a front wheel brake valve, a rear wheel brake valve, two front wheel cylinders and two rear wheel cylinders, and the anti-lock unit comprises an eccentric motor, a front wheel oil return plunger pump, a rear wheel oil return plunger pump, a front wheel energy accumulator, a rear wheel energy accumulator, two front wheel normally-open electromagnetic valves, two front wheel normally-closed electromagnetic valves, two rear wheel normally-open electromagnetic valves, two rear wheel normally-closed electromagnetic valves, two front wheel speed sensors, two rear wheel speed sensors and a controller. The system is advantaged in that the anti-lock braking system is introduced into the all-terrain vehicle, a hydraulic braking system is fully combined, the maximum deceleration of the vehiclecan be kept, stability and the steering capacity of the vehicle during braking can be kept, and that the vehicle is more smooth during braking under emergency conditions in the high-speed driving process can be guaranteed, and the driving pleasure of a driver is greatly improved.