339 results about "Membrane configuration" patented technology

Microelectromechanical systems (MEMS) apparatuses and processes are described that can employ a spring pillar or flexible pillar coupled to a sensing membrane to enhance deformation of the sensing membrane while providing robust MEMS sensors or devices. Described MEMS sensors or devices can comprise an exemplary spring pillar or flexible pillar between the sensing membrane structure and the backplate structure. Exemplary spring pillar or flexible pillar can facilitate adjusting stiffness of the sensing membrane to provide MEMS sensors or devices having large sensing area and compact device size.

The invention provides a preparation method of a composite double-layer microporous membrane, and belongs to the technical field of separation membrane preparation, different lower-layer and upper-layer membrane casting solutions are prepared respectively, the separation membrane is prepared at one time by adopting a double-scraper casting and coating method, the upper layer is thermally induced phase separation, and the lower layer is thermally induced phase separation or non-solvent induced phase separation; the double-layer liquid membrane is subjected to pre-phase splitting and pore opening in a constant-temperature and constant-humidity environment, and enters a gel bath at a certain temperature after pre-phase splitting, and a microporous membrane with a certain membrane structure is formed under the action of RTIPS and NIPS. According to the invention, a co-coating method is adopted, and VIPS, RTIPS and NIPS are used for adjusting the pore structure of the membrane, so that the microporous membrane meeting different filtering requirements is prepared; the prepared membrane product is high in flux and high in yield; the preparation process is simple and conditions are mild: the microporous membrane prepared by the method is simple in process, mild in conditions and suitable for industrial production; and the membrane structures of the upper and lower membranes can be freely adjusted.

A pellicle structure may include a membrane border and a pellicle membrane. The membrane border defines an open region. The membrane is in contact with the membrane border and extending over the open region. Thus, the membrane is capable of maintaining a thin film having a uniform thickness to prevent pattern errors.

The utility model provides a recoverable membrane structure for protein peptide extraction, which relates to the technical field of membrane recovery equipment and comprises a communicating pipe, a sealing cover fixed at the upper end of the communicating pipe, a recovery membrane arranged in the communicating pipe, a fixed base fixed in the sealing cover, a supporting spring fixed in the fixed base, and a sliding sleeve fixed at the upper end of the supporting spring. The sliding sleeve is slidably connected with the fixed base, a fixed inner wall is fixed in the fixed base, a sliding groove is formed in the upper end of the fixed inner wall, a fixed ball is slidably connected into the sliding groove, the fixed inner wall is detachably connected with a fixed column through the fixed ball, and a circular ring groove is formed in the surface of the fixed column. Therefore, a worker can replace and recycle the membrane more conveniently, the replacement efficiency of the membrane structure can be remarkably improved, the maintenance cost is reduced, and meanwhile, the efficiency of the whole production process is improved.

The invention discloses a membrane structure test device for applying a normal load and a load simulation method, and relates to the field of membrane structure test equipment.The box structure main frame of the device is constructed by welding light-weight thin-wall steel, orthogonal stiffened rib plates are welded to side sealing plates on the periphery, one end of the device is connected with a membrane structure test piece, and the other end of the device is connected with the membrane structure test piece; the side surface is connected with a pressure acquisition-control module through an air pipe, and a sealing gasket at the joint is reinforced; the pressure acquisition-control module is connected with the pneumatic valve module through a signal data line, two ends of the pneumatic valve module are connected with the test box and the air source module to form an air path, the pressure in the test box is adjusted through air inflation or air exhaust, and accurate and uniformly distributed normal load is applied. The adjustable pressure difference between the inside and the outside of the box body is formed through air exhaust and air inflation, the normal uniform load acts on the flexible membrane surface structure, the pressure in the test box is monitored in real time, rapid conversion of air inflation and air exhaust and fine dynamic adjustment of different flow rates are achieved, the technical principle is simple and reliable, the applicability is high, and the expansion applicability is high.

A membrane technology based on a wettability material has the problem of membrane pollution and cannot efficiently and stably separate and purify oil-containing wastewater, so that a preparation method of a hydrophilic membrane with excellent hydrophilicity and an open pore channel is urgently needed. The invention discloses an ultrahigh hydrophilic membrane for efficiently and stably separating an oil-in-water emulsion, which is characterized in that magnetic nanoparticles (Fe3O4 MNPs) are wrapped in membrane fibers through electrostatic spinning and an in-situ growth method, and a hydrophilic polyaniline rough micro-nanosphere structure grows on the surface of the membrane fibers. Under the action of a magnetic field, the magnetic particles obtain magnetism, the generated magnetic interaction force pulls the nanofiber to optimize the membrane structure, and hydrophilic groups are further exposed while membrane holes are supported. The flux of the prepared three-dimensional hydrophilic membrane for separating n-hexane-in-water emulsion under the action of a 0.2 T magnetic field is up to 8957.9 Lm <-2 > h <-1 >, and the efficiency is up to 99.87%. The membrane shows optimal separation performance in short-term and long-term cycle tests, and is expected to be applied to actual oily wastewater purification scenes.

The present invention relates to the technical field of transportation engineering and municipal engineering construction, specifically to an isolation structure and method for over-station construction. An isolation structure for over-station construction, comprising a transversely arranged horizontal steel beam and a longitudinally arranged main steel beam, characterized in that: an isolation membrane structure is provided on the transverse steel beam and the main steel beam, the lower end of the isolation membrane structure is connected to a dense-mesh safety green net, the lower end of the dense-mesh safety green net is connected to a vertical hard isolation structure, and the vertical hard isolation structure is located on the inner side of the platform. Compared with the existing technology, it can be constructed during the operation of the train, and after it is erected, it has high-demand isolation and safety protection, and is fully isolated from the track area, so that the construction in the station and the train operation do not affect each other, thereby improving work efficiency and construction safety.

The invention discloses an acceleration test method for an MEMS pressure sensor, which comprises the following steps of: acquiring an MEMS pressure sensor sample which comprises a deformable membrane structure; a stress application structure is arranged on the membrane structure, and the stress application structure is a built-in electrode or an external electrode plate; applying voltage to the stress application structure, and enabling the membrane structure to deform through electrostatic force, which is equivalent to environment pressure input; installing the MEMS pressure sensor in a multi-environmental stress test device, and synchronously loading at least one environmental stress of temperature, humidity, vibration or impact; and monitoring the performance parameter change of the MEMS pressure sensor, and evaluating the reliability of the MEMS pressure sensor. By designing the stress application structure, the electrostatic force generated by loading the direct-current voltage simulates the pressure film structure to realize the input of the environmental pressure, additional equipment is not needed, and the test method is convenient and easy to implement.

The utility model discloses a wave-shaped PTFE (Polytetrafluoroethylene) membrane structure for a building facade. The wave-shaped PTFE membrane structure comprises wave-shaped PTFE membrane structure units, the number of the wave-shaped PTFE film structure units is multiple, and the multiple wave-shaped PTFE film structure units are installed on the outer vertical face of a building in a multi-layer structure. The wave-shaped PTFE membrane structure units are of arc-shaped structures, and the wave-shaped PTFE membrane structure units on the same layer are sequentially connected to form a wave structure; and the wavy PTFE membrane structure units and the wavy PTFE membrane structure units on the adjacent layers are arranged in a staggered manner. The PTFE membrane structure is designed into a multi-layer structure, each layer of PTFE membrane structure is designed into a wave-shaped structure, the adjacent layers of wave-shaped PTFE membrane structures are arranged in a staggered mode, the visual effect of abutted seams is weakened in a wave-shaped modeling mode at the abutted seam positions of the PTFE membrane structures, modeling embodiment is highlighted, and aesthetic requirements are better met.

The invention discloses a vacuum infusion bag film structure of a wind power generation blade. The vacuum infusion bag film structure of the wind power generation blade comprises at least one bag film, the bag film comprises a base material layer and a temperature-sensitive color-changing layer, the temperature-sensitive color-changing layer is arranged on the base material layer or embedded in the base material layer, and the temperature-sensitive color-changing layer is configured to change color along with temperature change. The temperature-sensitive color-changing layer is used for monitoring local temperature abnormity in the vacuum infusion process of the wind power generation blade, when the temperature of the coverage area of the temperature-sensitive color-changing layer exceeds a preset threshold value, the temperature-sensitive color-changing layer is converted into a second color from a first color, and the first color is different from the second color. According to the technical scheme provided by the invention, the temperature-sensitive color-changing layer is arranged on the bag film, so that a real-time and visual temperature monitoring means can be provided when the leaves are heated and cured or maintained and heated.

The invention discloses a novel thumb piano, in which a sound-producing piano piece is installed on a membrane structure or a drum skin, and the thumb piano comprises an entire piano body and a piano bracket fixed on the entire piano body, and a spring piece for playing music is installed on the piano bracket; the entire piano body comprises a drum skin arranged on the top surface, and a general support fixed on the lower side of the drum skin for supporting the drum skin; the drum skin is closed and fixedly connected with the general support to form a sound cavity with an opening downward. The arrangement of the drum skin in the invention enables the player to play the spring piece with the thumb, and when the spring piece vibrates, the vibration of the spring piece drives the bottom plate and the drum skin to vibrate at the same time, so that the sound produced by the thumb piano is thick, pleasant and louder; furthermore, when the thumb piano is held in the hand and played, the sound cavity formed between the drum skin and the general support will make the sound waves generated by the drum skin during vibration hit the inner wall of the sound cavity and then fold back into the air, so that the sound waves rotate in the sound cavity to form a simulated echo state; so that the sound produced by the thumb piano is more ethereal, mellow and more pleasant to the ears.

The invention relates to a method for synergistically regulating and controlling the aperture of a material separation membrane based on electric field-vacuum heating, which comprises the following steps: S1, uniformly mixing polysulfone, an additive and a solvent, and preparing a supporting layer membrane casting solution; s2, coating the surface of a polyolefin-based microfiltration membrane with the supporting layer membrane casting solution obtained in the step S1, and preparing a polysulfone ultrafiltration base membrane through immersion precipitation phase inversion; s3, uniformly mixing sulfonated polysulfone, N, N-dimethylformamide, ethylene glycol monomethyl ether and a pore-preserving agent to prepare a sulfonated polysulfone separation layer membrane casting solution; and S4, coating the surface of the polysulfone ultrafiltration base membrane obtained in the step S2 with the sulfonated polysulfone separation layer membrane casting solution obtained in the step S3, applying a direct-current electric field perpendicular to the surface of the membrane, and simultaneously performing vacuum heating to obtain the material separation membrane. An electric field and vacuum heating synergistic technology is adopted to induce oriented arrangement of sulfonated polysulfone to form an ordered structure, the membrane pore size and the membrane structure consistency are accurately controlled, and the membrane permeation flux and separation selectivity are optimized.

The invention relates to the technical field of medical waste liquid treatment, in particular to a medical waste liquid classified collection device which comprises a collection vehicle, an annular partition plate is fixedly connected to the interior of a liquid collection cylinder, a separation rotating cylinder is rotatably connected to the inner top wall of the liquid collection cylinder, and an automatic suction part is arranged in a first liquid outlet pipe. A liquid pump is fixedly installed on the left side of the ring frame base, and a rotating rod frame is rotationally connected to the inner side of the ring frame base. According to the medical waste liquid classified collection device, solid-liquid separation is conducted through a filter screen structure in a filter screen groove in a separation rotary drum, at the moment, a slag discharging groove opening of an annular partition plate is opened through a discharging groove of a material blocking plate, filtered slag is discharged into a slag discharging pipe in cooperation with a rotating scraper plate and collected through a dirt collection box, the separation rotary drum rotates to give centrifugal force to a piston column, and the piston column is separated from the material blocking plate; and small-molecule liquid is discharged into the liquid collecting cylinder through the filter membrane layer with the small-molecule permeable membrane structure, so that the separation effect of liquid with large and small molecular structures in the separation drum is realized.

The invention relates to a microelectromechanical pressure sensor (1), comprising: - a substrate (2) with a layer system (3) arranged thereon; - a sensor structure (5) which is self-supporting and fastened to the layer system (3) by means of at least one suspension structure (4), said sensor structure comprising a first membrane structure (6) and a second membrane structure (7), between which a cavern region (8) is formed, wherein a first measuring electrode (9) arranged in the cavern region (8) is fastened to the first membrane structure (6) and a second measuring electrode (10) arranged in the cavern region (8) is fastened to the second membrane structure (7), wherein the first and second measuring electrodes (9, 10) form a measuring capacitance in the cavern region (8); - a cap structure (11) which defines a pressure measuring chamber (12) in which the sensor structure (5) is arranged in a cantilevered manner; and - at least one pressure access channel (13) to the pressure measuring chamber (12), wherein the at least one pressure access channel (13) runs through the substrate (2). The invention further relates to a method for producing such a microelectromechanical pressure sensor (1).

In an embodiment a MEMS structure includes a back-plate structure, a support structure having a cavity, a membrane structure between the back-plate structure and the support structure, a first clamping structure having a first structured oxide layer between the support structure and the membrane structure, wherein an inner edge of the first clamping structure is laterally offset from an edge of the cavity, and wherein an offset of the first clamping structure forms a gap between the support structure and the membrane structure, and a second clamping structure having a second structured oxide layer and a first structured taper layer between the back-plate structure and the membrane structure, wherein the second structured oxide layer is arranged between the back-plate structure and the first structured taper layer, wherein an inner edge of the second structured oxide layer laterally extends over the cavity, and wherein the first structured taper layer is arranged between the second structured oxide layer.

The invention discloses scraper type thin film molecular distillation equipment which comprises a distillation retort, and a vibration structure is arranged in the distillation retort, serves as the inner wall of the distillation retort and is used for reducing material residues; the downward pressing structure is arranged on the vibration structure, and the downward pressing structure is used for driving the vibration structure so that the vibration structure can vibrate; and the film scraping structure is arranged on the inner side of the vibration structure, and the film scraping structure is used for evenly smearing the materials to the inner side of the vibration structure. According to the scraper type film molecular distillation equipment, the film scraping structure can dynamically adapt to different material characteristics, such as viscosity, adjustment of film scraping pressure and speed and uniform and controllable liquid film thickness through elastic matching of the compression-resistant spring, the sliding rod and the sliding groove of the bearing plate, combination of rotation speed adjustability of the speed reducer and real-time detection of the damping sensor on film scraping resistance; the problem that evaporation efficiency and separation selectivity are limited due to uneven liquid films of traditional equipment is effectively solved.

This utility model discloses a suspension decoupling membrane structure for reducing dynamic stiffness, relating to the field of automotive suspension technology. The device includes a diaphragm body located within a flow channel decoupling membrane groove. The diaphragm body has several first buffer ribs evenly distributed along its length on its upper and lower surfaces. Between adjacent first buffer ribs, several second buffer ribs are evenly distributed along their width on the diaphragm body, with the length direction of the second buffer ribs perpendicular to that of the first buffer ribs. The sides of the first and second buffer ribs away from the diaphragm body respectively abut against the top cover plate and the bottom of the flow channel decoupling membrane groove. This utility model enables the suspension decoupling membrane to maintain low dynamic stiffness not only under high-frequency micro-amplitude vibrations but also to provide a large damping angle under low-frequency large-amplitude vibrations, thereby effectively suppressing abnormal noises and improving in-vehicle quietness.

A frame supporting type air rib membrane structure system comprises a frame supporting structure, an air rib structure and a membrane structure. The frame supporting structure comprises a supporting unit; the supporting units are arranged at intervals in the longitudinal direction. The supporting unit comprises a stand column and a top support. The air rib structure is mounted on the outer side of the frame supporting structure and is formed by splicing a plurality of air rib type membrane structure units; each air rib type membrane structure unit comprises an air rib and a connecting pipe; the air ribs are arranged in parallel at intervals, and one group of air ribs are horizontally arranged; the group of air ribs are communicated with one another through connecting pipes to form one or more independent inflation loops; pressure sensors are arranged on the surfaces of the air ribs; and the membrane structure covers the outside of the air rib structure and is detachably connected with the air rib structure. The technical problems that a traditional gas film structure is small in application range, insufficient in stability, prone to being large in film surface deformation and unstable in gas rib are solved, and the technical problems that a traditional gas rib type film structure is poor in adjustment flexibility, large in operation difficulty and high in cost are further solved.

The present application relates to the technical field of structural design of construction engineering, and especially relates to a large-span roof tensile membrane structure and a design method thereof; the large-span roof tensile membrane structure comprises: no less than two non-draining boundaries and one draining boundary; the tensile membrane is tensiled between the non-draining boundaries and the draining boundary; the non-draining boundaries are located at the same elevation or different elevations; and the draining boundary is in a concave arch shape. The present application constructs a tensile membrane structure which does not rely on arches, cables, struts and other supporting members, forms a negative Gaussian surface by concave design of the membrane boundary, forms a draining path along the concave direction, and realizes organized drainage of the tensile membrane structure. Meanwhile, under the action of prestress, the membrane structure of the negative Gaussian surface has a structural rigidity which meets the use requirements. The corresponding design method can determine the size of the concave of the outer boundary of the tensile membrane based on the geometry of the roof structure of different shapes. The tensile membrane structure and the design method thereof proposed by the present application can avoid the influence and limitation of the traditional membrane structure modeling and internal supporting members on the architectural effect, maximize the realization of the demand for transparent and light architectural effect, and at the same time avoid water accumulation of the membrane structure.

The invention discloses a temperature adjusting system and method in an air-supported membrane structure space based on a cluster vortex tube, and the system is characterized in that the system comprises a fan set air flow boosting device, a vortex tube direction adjusting device and a pipeline erected on a wall surface; the air flow boosting device of the fan set is composed of a plurality of modular boosting units and comprises an air flow inlet flange, a power air duct, a static boosting impeller, an air flow outlet flange, a locking nut, a movable boosting impeller, a main shaft and a bearing, and the air flow inlet flange and the air flow outlet flange are installed at the two ends of a shell of each boosting unit. According to the temperature adjusting method, on the basis of the vortex tube technology for the cluster air conditioner, dozens of sets of vortex tubes with the similar traditional air conditioner temperature adjusting capacity are used, multiple sets of fans arranged on an air-supported membrane structure building serve as air sources, and a special pressure boosting device is used for converting large-flow airflow into high-pressure fluid; and high-pressure airflow is guided into the vortex tube cluster through a pipeline system with a special layout design, so that temperature adjustment is realized.

The utility model relates to the technical field of membrane structure inflation equipment, in particular to membrane structure inflation equipment which comprises an outer frame body, a filtering structure is arranged in the outer frame body and close to one side, a grid plate is arranged on one side of the outer frame body and located at the filtering structure, a dehumidification device is arranged in the outer frame body and located beside the filtering structure, and an air outlet is formed in the other side of the outer frame body. A fixing frame is fixed to the inner side of the outer frame body, a heating block is fixed to the side face of the fixing frame, a connecting plate is fixed to the inner side of the outer frame body, a plurality of refrigeration pieces are embedded in one side of the connecting plate, and a plurality of heat dissipation grooves are formed in the positions, located at the connecting plate, of the outer side of the outer frame body; a plurality of connecting port structures are arranged at one end of the air outlet. The membrane structure air inflation device solves the problems that the air inflation end of an existing membrane structure air inflation device cannot adapt to air inlets with different diameters, is inconvenient to fix and prone to falling off, and cannot control the air inflation temperature, so that the tensioning speed of the surface of a membrane structure is affected, and the air inflation speed is affected.

The utility model belongs to the technical field of closed coal yards, and particularly relates to an ultrahigh-clearance ultrahigh-wind-pressure air-supported film device for a closed coal yard. The utility model discloses an ultrahigh-clearance ultrahigh-wind-pressure air-supported membrane device for a closed coal yard. The device comprises an air blowing mechanism, a cable membrane mechanism and a foundation anchoring mechanism, the foundation anchoring mechanism is arranged at the bottom and used for bearing the cable membrane mechanism; the cable membrane mechanism is used for supporting a membrane body through air pressure to cover a large-span space where the foundation anchoring mechanism is arranged. The multiple air blowing mechanisms are arranged on the side edge of the cable membrane mechanism and used for blowing air into the cable membrane mechanism, and the cable membrane mechanism is supported by air pressure. The air film structure is improved, the high-strength and high-flexibility film material is adopted as the main material, the fan is used for increasing the air pressure in the sealed space so as to support the cable film mechanism, and the large-span structure system without a bearing in the middle can be met.

The problem addressed by the present invention is to provide a method capable of activating a solid polymer fuel cell in a shorter time. In order to solve the problem, the present invention provides a method for activating a solid polymer fuel cell having an electrode membrane structure in which a positive electrode and a negative electrode are disposed facing each other with a solid polymer membrane interposed therebetween, the solid polymer fuel cell is heated at a set temperature that is set within a predetermined range (preferably from 100 DEG C to 300 DEG C (inclusive), more preferably from 100 DEG C to 200 DEG C (inclusive), and further preferably from 100 DEG C to 150 DEG C (inclusive), while the humidified hydrogen-containing gas that has been humidified is pressurized and supplied to the anode, and then the solid polymer fuel cell is heated at a set temperature that is set within a predetermined range (preferably from 100 DEG C to 300 DEG C (inclusive), more preferably from 100 DEG C to 200 DEG C (inclusive). The humidified oxygen-containing gas or the humidified nitrogen-containing inert gas after humidification is pressurized and supplied to the cathode.

The utility model relates to a balance weight and air supply inflation integrated base which is suitable for an air costal membrane structure and an inflatable membrane structure such as an inflatable dome and an inflatable fortress. During use, a membrane body structure to be inflated is connected to the inner membrane base, air is supplied to the inner membrane base and the membrane body structure through the air inlet mechanism, and inflation in the membrane body structure is achieved. Filler is placed in the outer film base through the filling hole, and weight balancing is achieved. The inner space of the outer film base is divided into a plurality of partition spaces, so that on one hand, the filler is separated from the air inlet mechanism, and interference of the filler on the air inlet mechanism is avoided; and on the other hand, the filler is convenient to take and place, and uniform distribution of the filler is achieved. Therefore, the balance weight, inflation and air supply are integrated, operation is easy, the attractiveness is high, and it can be guaranteed that the inflatable membrane structure is effectively fixed.

The invention discloses an air-supported membrane structure fire whole-process response simulation method based on heat-pressure-structure coupling, and belongs to the technical field of structure disaster prevention and fire safety evaluation. The problems that at present, analysis of the time-varying relation between film surface temperature field heterogeneity and material degradation is lacked, an internal air pressure dynamic evolution mechanism is ignored, a fire whole-process system simulation method is lacked, and an engineering safety evaluation system is not formed are solved. According to the method, FDS is taken as a fire scene modeling basis, an ABAQUS finite element platform is combined, multi-field data linkage is realized through a user-defined Python interface and a subprogram, and the whole dynamic evolution process of a gas film structure in a fire from fire to collapse is accurately described. On the basis of heat-pressure-structure coupling, a collaborative simulation frame is constructed, multi-field data linkage and material partition analysis are achieved, air pressure evolution and membrane surface damage are simulated, the whole fire process is covered, and a reliable technology is provided for safety evaluation and fire-resistant design.

The invention provides a modularized detachable air film facility and a construction method, relates to the field of air film buildings, and aims at solving the problem that the building scale or form is difficult to adjust due to the fact that modules of an existing air film structure are difficult to disassemble, rapid alignment and detachable connection of adjacent modules are achieved through the adsorption effect of flexible magnets and clamping grooves, and the construction efficiency is improved. A professional tool or high-temperature welding is not needed, physical damage of traditional mechanical clamping to a membrane material is avoided, the construction threshold is remarkably reduced, an elastic cushion on the inner wall of a concave part is attached to a clamping block, deformation of a self-adaption module and air pressure fluctuation are achieved, sealing failure caused by installation errors or material stretching and retracting is avoided, air tightness is guaranteed, and preliminary air tightness is provided through flexible magnet adsorption; the elastic cushion further fills the gap to form a redundant sealing layer, the air leakage risk is reduced, the modules can be flexibly increased or decreased or rearranged, and the device adapts to occasions such as temporary activities and emergency disaster relief where the scale needs to be rapidly adjusted.

The utility model relates to the technical field of reverse osmosis membranes, in particular to a reverse osmosis membrane element membrane rolling structure which comprises a bottom plate, a fixing assembly is arranged at the top of the bottom plate, and the fixing assembly comprises a first fixing plate and a second fixing plate which are fixedly connected with the top of the bottom plate respectively. A second rotating block and a first rotating block are rotationally connected to the side faces of the first fixing plate and the second fixing plate correspondingly, abutting plates are elastically connected to the side faces of the second rotating block and the first rotating block through first springs correspondingly, mounting blocks are arranged on the side faces of the abutting plates, and a fixing base is fixedly connected to the top of the bottom plate; a rotating shaft is rotationally connected to the interior of the fixing base, a driving motor is fixedly installed at the top of the bottom plate, the output end of the driving motor is fixedly connected with a center shaft of the rotating shaft, the exterior of the rotating shaft is in transmission connection with a second rotating block through a belt, and a supporting assembly is arranged at the top of the bottom plate. Rapid fixing and supporting of the film body and the winding drum are achieved, and the film winding process is conducted stably.

The application discloses a kind of high-efficiency energy storage system and method based on bipolar membrane electrodialysis, including multiple series setting bipolar membrane stack combination unit, electrode system, electrolyte circulation system, control system and auxiliary equipment.The application utilizes the water dissociation characteristics of bipolar membrane and the ion migration mechanism of electrodialysis, realizes the efficient storage and release of electric energy, is suitable for renewable energy storage, power grid peak shaving and distributed energy system and other fields, and significantly improves energy conversion efficiency, prolongs system life and reduces operating cost by optimizing membrane structure, improving system design and control strategy.

The utility model discloses a back pressure type anti-corrosion device of a closed pressure vessel, which comprises a pressure vessel main body, an anti-corrosion and anti-corrosion film structure and a pressure control system, and the pressure vessel main body is divided into a working cavity and a balance cavity by the anti-corrosion and anti-corrosion film structure; the pressure control system controls the pressure difference value between the working cavity and the balance cavity to be not larger than 10 KPa. The pressure control system comprises an air pressure source, a first flow control valve, a second flow control valve, a third flow control valve, a pressure difference sensor and an electric control device, wherein the first flow control valve, the second flow control valve and the third flow control valve are used for controlling air flow; the differential pressure sensor is connected with the working cavity and the balance cavity. The air pressure source is communicated with the working cavity through a first flow control valve and is communicated with the balance cavity through a second flow control valve; the electric control device is used for receiving signals of the differential pressure sensor and controlling the air pressure source, the first flow control valve, the second flow control valve and the third flow control valve.