81results about How to "Little impact on efficiency" patented technology

The invention discloses a multidirectional vibration energy recovery structure. The structure comprises a shell, a mass block, energy conversion strips, a permanent magnet and an electromagnetic coil, wherein the shell has a hollow solid structure, the mass block is positioned in the center of the shell and made of a soft magnetic material; the number of the energy conversion strips is in accordance with the number of vertexes of the shell; the mass block is connected with each vertex of the shell; the energy conversion strip consists of a preflex elastic material core layer and at least one piezoelectric material layer, and energy collecting electrodes are distributed on the piezoelectric material layer; and the permanent magnet is made of a strong magnetic material and fixed inside the mass block, and the electromagnetic coil is fixed on the outer surface of the shell. The structure can collect vibration energy in high efficiency in spite of the change of the vibration direction or in a multidirectional vibration environment.

The invention discloses a treatment system and a treatment process for organic waste gas boiler thermal incinerating. The treatment device comprises an absorbing device, a boiler fan, a boiler, a desulfurization, denitrification and dust removal device and a chimney which are sequentially connected, wherein a defroster, a waste gas draught fan, an emergency discharge controller and an air quantity balance compensator are arranged between the absorbing device and the boiler fan and are sequentially connected, the defroster is connected with the absorbing device, and the air quantity balance controller is connected with the boiler fan. The process has the advantage that on the premise of ensuring the purifying efficiency, by additionally arranging the defrosting treatment, the emergency discharge treatment and the air quantity balance treatment, the stability and safety of the whole treatment process are improved.

The invention discloses a plate evaporator type MVC heat pump evaporation system. The system comprises a feed preheating pipeline, an evaporation circulation pipeline, a compressing pipeline, a condensing pipeline, a water spray pipeline, a water discharge pipeline and a material discharging pipeline. The system is designed to recycle steam in order to realize energy saving, and can effectively protect a compressor and realize the automatic control adjust of the system. The evaporation system is mainly used for evaporation of chemical industry aqueous solutions, evaporation of salt forming industrial salt solutions, concentration of environmentally-friendly industrial wastewater, and other efficient evaporative concentration of clean liquids; and compared with traditional evaporation systems, the system disclosed in the invention has the obvious advantages of energy saving and great economic benefit.

A statistical method for the covering rate of embedded system includes such steps as setting up memory unit, writing data to it when the system is running to an embedded point for recording the number of particular program segment runnings, reading the data from the memory unit, and performing data analysis and statistic. Its advantages are less communication traffic between foreground and background and high versatility.

The invention discloses a coring drilling tool based on hydraulic clamping coring. The coring drilling tool comprises a force transferring power distribution mechanism, a guide limiting mechanism, a pressure storage mechanism, a lifting pressure injection mechanism, a hydraulic core clamping mechanism, a side spraying drill bit power distribution mechanism, an outer tube assembly and a sealing system, wherein the guide limiting mechanism is butted with the force transferring power distribution mechanism; the pressure storage mechanism is butted with the guide limiting mechanism; the lifting pressure injection mechanism is butted with the pressure storage mechanism; the hydraulic core clamping mechanism is butted with the lifting pressure injection mechanism; the side spraying drill bit power distribution mechanism is butted with the hydraulic core clamping mechanism; the hydraulic core clamping mechanism comprises a bottom bearing platform, a hydraulic membrane, a core inner tube, a clamp spring seat and a clamp spring. The coring drilling tool can reach 100 percent coring rate in soft, loose and broken complex stratums where coring is difficult, provides fully automatic three-dimensional stress to clamp, bind and control cores based on hydraulic pressure, meanwhile is matched with a conventional core clamping and cutting device, and has the characteristics of high reliability, high coring efficiency, high coring quality, high core recovery percentage, wide applicable stratum range and good automation property.

The invention discloses an operating system vulnerability detection method and system based on code similarity analysis and a medium. The method comprises the steps: locating a vulnerability code segment, and forming an operating system vulnerability code library; screening an operating system source code library; for the vulnerability code segment, respectively generating a code attribute graph set by an operating system source code library; and respectively extracting features from the vulnerability function in the vulnerability code segment and the code attribute graph set of each functionto be tested in the operating system source code library, calculating similarity, detecting whether reuse of the vulnerability code exists or not, and outputting a result. The method aims at solving the problems that an existing vulnerability code reuse detection method is insufficient in detection capacity when oriented to large-scale software systems such as an operating system. By adopting themethods of screening the operating system source code library, progressively screening the multi-vulnerability characteristics and the like, the process of the existing detection method is improved and optimized, and good accuracy is considered while high operating efficiency is ensured.

The invention relates to a novel compressed air energy storage device characterized by comprising a control system, N energy storage parts and N generating parts; N is larger than or equal to 2 and is N-level compression energy storage; the control system is used for controlling the energy storage parts and the generating parts to perform corresponding actions; each energy storage part comprises an air compressor and an air storage tank; an outlet of the air compressor is connected with an inlet of the air storage tank by a high-pressure pipe; an air outlet of the air storage tank is connected with an inlet of the next-level air compressor by a high-pressure pipe; an exhaust outlet of the air storage tank communicates with the external air by a high-pressure pipe; each connected corresponding high-pressure pipe is provided with an electromagnetic valve; the other end of the high-pressure pipe connected with the exhaust outlet of the air storage tank is provided with each generating part; the first-level air compressor provides air source power and converts superfluous power generated by a power grid during the low peak of power utilization into internal energy of a gas; an air outlet of the Nth-level air storage tank is sealed; and each generating part comprises a wind driven generator and an electromagnetic valve for controlling the wind driven generator.

The invention discloses a hydraulic rock core lifting device for exploratory boring. The device comprises a waterproof transfer mechanism, a diversion limiting mechanism, a pressure storage mechanism, an elevation injection molding mechanism, a hydraulic core clamping mechanism, a lateral jet drill bit transfer mechanism and a sealing system, wherein the diversion limiting mechanism is butted with the waterproof transfer mechanism; the pressure storage mechanism is butted with the diversion limiting mechanism; the elevation injection molding mechanism is butted with the pressure storage mechanism; the hydraulic core clamping mechanism is butted with the elevation injection molding mechanism; the lateral jet drill bit transfer mechanism is butted with the hydraulic core clamping mechanism. The device can be directly matched with a double-tube drilling tool and a rope core drill to achieve a coring rate of 100 percent for a complicated difficult-to-core formation such as a soft and loose formation and a broken formation; in addition, a rock core can be fully automatically lifted, bundled and controlled under three-dimensional stress on the basis of hydraulic pressure; moreover, a conventional core clamping and cutting device is matched to achieve the characteristics of high reliability, high coring efficiency, high coring quality, high rock core collection rate, wide applicable formation range, high automation performance and the like.

The invention discloses a CID information reporting method which can be applied to a system comprising a POS machine, a router and a prepositive computer. The method comprises the following steps: the router receives a request for establishing physical connection sent by the POS machine; after extracting a calling number of the POS machine, the router can establish the physical connection with the POS machine; the router also can establish TCP short connection with the prepositive computer, lead the calling number to be encapsulated into TCP message, and send the TCP message into the prepositive computer; message-type field is carried by the TCP message and used for identifying whether the TCP message carries the calling number. In the method, the CID uploading function can be realized by an application layer above the TCP, and the influence for transparent transmission data can be minimized.

The invention provides a humidifying micro-mixing burner which comprises a burner top cover, a plurality of micro-mixing nozzles, an air distribution cavity, a fuel distribution cavity, a positioning front end cover, a positioning rear end cover, a flame tube, a cartridge receiver and an electric igniter, wherein a through hole is formed in the center of the burner top cover, the fuel distribution cavity and the air distribution cavity are formed in the burner top cover, and an air inlet and a fuel inlet are formed in the burner top cover; and the positioning front end cover is fixed to the tail end of the isolation inner wall, the positioning rear end cover is fixed to the tail end of the wall of the through hole, a plurality of positioning holes are evenly formed in each of the positioning front end cover and the positioning rear end cover, the positioning rear end cover is arranged on the positioning front end cover in a sleeved mode, one end of the flame tube is arranged on the positioning rear end cover in the sleeved mode, and one micro-mixing nozzle is mounted on each pair of positioning holes in one-to-one correspondence between the positioning front end cover and the positioning rear end cover. By using humidifying micro-mixing burner disclosed by the invention, a flame temperature peak value and the size of a high-temperature area are controlled, so that the residence time of flue gas in the high-temperature area is shortened, and low emission of NOx in a high-temperature and high-pressure environment is achieved.

The invention discloses a broadband Doherty power amplifier, comprising a power divider, a main power amplification network, an auxiliary power amplification network and a broadband compensation network. The broadband compensation network is the compensation network which is composed of a capacitor, an inductor, a resistor and a microstrip and has a special structure. According to the broadband compensation network, a phase compensation effect can be achieved in a relatively wide band, a signal can be amplified efficiently in a relatively wide frequency range, the relatively high backoff efficiency is achieved in the band, and in particular, the ultrahigh efficiency is achieved at a 6dB power backoff position. Through adjustment of parameters of the compensation network, the broadband Doherty power amplifier can be generalized to the Doherty power amplifiers of other bands, and the broadband Doherty power amplifier has wide application prospect and practical value.

The invention discloses bridge road sign maintenance equipment. The equipment comprises a sign column, wherein a working block is arranged on an upper side of the sign column, a working cavity is formed in the working block, a rainwater storage mechanism is arranged in the working cavity, the rainwater storage mechanism comprises a storage block fixedly connected with a right end wall of the working cavity, and a storage cavity with an upward opening is formed at an upper end surface of the storage block. The equipment is advantaged in that the rainwater can be collected and can be used for cleaning and maintaining the sign as required, moreover, solar energy is used as part of energy, the solar energy is very clean and resource saving, a wound hose serves as a rainwater conveying tool, influence on conveying efficiency is small, moreover, the area capable of being cleaned and maintained is greatly increased, a spray head can rotate, cleaning and maintenance are more thorough, the winding block can move backwards along with the winding process in the hose winding process, and the hose cannot be wound.

The invention discloses a cyclone separator provided with double inlets and double outlets. The cyclone separator comprises a cyclone barrel body, wherein a cone, a middle ash bucket and a sewage outlet are arranged at the lower end of the cyclone barrel body in sequence; an air inlet component and an air exhausting component are arranged at the upper end of the cyclone barrel body; the air inlet component comprises a left air inlet and a right air inlet, and the left air inlet and the right air inlet are formed in the cyclone barrel body respectively; arc-shaped guiding plates are arranged in the communicating positions that the left air inlet and the right air inlet are communicated with the cyclone barrel body respectively; a gap is reserved between the top of the arc-shaped guiding plates and the cyclone barrel body; the air exhausting component comprises an air exhausting outer pipe, a connecting piece and an air exhausting inner pipe; a plurality of slotted holes uniformly distributed are formed in the side wall of the inner cone-shaped pipe of the air exhausting inner pipe. According to the invention, two main secondary eddy currents of upper eddy current and longitudinal swirling flow existing in cyclone can be effectively eliminated; the cyclone separator has the advantages that the cyclone separator is high in cyclone efficiency, low in cyclone resistance, high in operating flexibility, simple in structure, well-adapted and relatively low in cost, and has a wear-resistant lining.

The invention relates to a centrifugal compressor casing with large intervals and small circumferential through holes. The casing structurally comprises a casing, through holes, main blades and splitter blades, wherein the through holes are formed in the surface of the casing; the main blades and the splitter blades are arranged inside the casing; the gas flow at the through holes is driven by utilizing the relative movement of the casing and a rotor and the pressure difference between interior and exterior of the casing at the through holes; and the gas flow in the through holes periodicallysweeps through a compressor rotor flow channel to realize the periodic excitation effect on the flow in the compressor. The casing has the advantages that: (1) the influence range and the strength ofunfavorable low-energy flow near blade tips of the centrifugal compressor can be inhibited, so that the stable working margin of the centrifugal compressor is significantly expanded; (2) the influenceon the efficiency of the centrifugal compressor is small by utilizing an unsteady excitation effect; and (3) the casing is simple in structure and convenient to apply and implement.

The invention discloses a method for preparing a crimpable nanometer paper-based flexible solar cell by 3D aerogel jet printing. At first, that whole cellulose pap is soaked in an ionic liquid, A cellulose paper is rapidly partially dissolved and regenerated under hot pressing condition, nanometer paper with high transmittance and haze is prepared, As that flexible substrate material, the nanometer pap is sprayed on the surface of the flexible substrate material by 3D aerogel to jet the precision printing solar cell components including the anode PFN / Ag NWs, CuPc / C60 / PTCBI / BCP of that active lay, Cathode MoO3 / Ag / MoO3, The thickness of each component is precisely controlled by setting 3D printer parameters, and the surface electrode grid width of the prepared paper flexible solar cell is less than 10 microns and the thickness is less than 20 nanometers, so that the flexible organic thin film solar cell with 50-70% higher conversion efficiency than the traditional flexible solar cell isprepared.

The invention provides a method for reconstructing alpha-shape curved surface topology of an object surface sample point, which belongs to the field of product reverse engineering. The method is characterized by comprising the steps of constructing a Delaunay grid partition of the object surface sample point and constructing a space index KD tree; solving an alpha-shape scale threshold interval which corresponds with each patch, and obtaining a left end point set and a right end point set of the interval; selecting a patch with a least end point summation of the interval as an initial patch; obtaining a curved surface local sample with an optimized gain for estimating a sample point distribution density, performing alpha-shape scale threshold adaptive adjustment according to the sample point distribution density, then performing Delaunay patch filtering, and obtaining an initial grid curved surface; and extracting an external grid patch of the initial grid for obtaining a two-dimensional manifold grid. The method of the invention has functions of substantially preventing holes and rib dents on the grid curved surface, better keeping shape and position accuracy of the rib characteristic, reducing non-manifold patches in a primary filtering result, and furthermore realizing a relatively high reconstruction efficiency.

The invention relates to a totally closed Breton cycle heat-power conversion device. The totally closed Breton cycle heat-power conversion device comprises a rotor, wherein an electric generator rotor, a low-pressure compressor rotor, a turbine rotor and a high-pressure compressor rotor are sequentially and vertically arranged on the rotor from top to bottom; the electric generator rotor is arranged in an upper air cylinder, and the low-pressure compressor rotor, the turbine rotor and the high-pressure compressor rotor are arranged in an air cylinder, and the air cylinders and the upper air cylinder are connected through static seal and are integrated, so that a totally closed structure is formed; through reasonable layout of medium gas inlets and outlets of a low-pressure compressor, a turbine and a high-pressure compressor, the leakage of high-temperature media of the turbine to a high-pressure compressor, the low-pressure compressor, a bearing, an electric generator and the like canbe avoided, and the structure is compact; meanwhile, it can be ensured that the temperature of the air cylinder where the bearing is located is low, extra cooling measures are not needed, the problemthat the temperature and the pressure of the bearing are not stable can be solved, safe and stable running can be achieved, the pressure difference of the two sides of the shaft seal between the aircylinders can be small, the leakage amount is small, and the unit efficiency is improved.

The disclosure relates to a terminal with a touch key, and belongs to the technical field of electronics. The terminal comprises a processor and the touch key, wherein the touch key comprises a touch sensor and a key cover plate; the processor is electrically connected with the touch sensor; the key cover plate is positioned above a sensing sheet of the touch sensor; and the processor is used for obtaining a current detection signal value of the touch sensor, determining a target control instruction corresponding to the current detection signal value according to a correspondence between a pre-stored detection signal value and the control instruction, and executing the target control instruction, and the detection signal value of the touch sensor is increased with increment of a sensing area of the sensing sheet. With the adoption of the terminal, the influence on the antenna efficiency can be reduced.

The invention discloses a power grid dispatching identity authentication method and system based on multimode recognition, and the method comprises the steps that a server receives a login request transmitted by a first client of power grid dispatching, completes the login authentication of the first client, and transmits a login authentication passing instruction to the first client; the server sends a communication connection establishment request to a second client scheduled by the power grid through a telephone exchange network according to the communication connection instruction of the first client, and communication connection between the second client and the first client is established; in the call process, the server receives a call authentication request of the second client, and call authentication of the second client is completed; the server receives a call authentication request of the first client and completes call authentication of the first client; the server receives a logout authentication request of the first client, completes logout authentication of the first client, and disconnects communication connection between the first client and the second client; login authentication, conversation authentication and logout authentication are all completed through multi-modal signal identification.

The invention discloses an MMC topology containing partial energy storage elements and a steady-state operation control method of the MMC topology. The MMC topology is characterized in that each bridge arm comprises a plurality of sub-modules connected in series and a bridge arm inductor. The sub-modules comprise an HBSM, an FBSM and an FBSM-BESS, that is, a half-bridge sub-module, a common full-bridge sub-module and a full-bridge sub-module containing an energy storage element. And the numbers of the HBSM, the FBSM and the FBSM-BESS in each bridge arm are respectively N / 2, N / 4 and N / 4. The MMC topology has AC-DC side power conversion capability, power oscillation suppression capability and good frequency support capability, has low requirements on the capacity of the energy storage device, and has small influence on the efficiency of the converter.

The invention discloses a gas turbine stator blade and a cooling structure thereof. The cooling structure comprises a first blade partition plate, a second blade partition plate spaced from the firstblade partition plate, a first cooling channel, a second cooling channel, a third cooling channel and an air film hole, wherein the first cooling channel, the second cooling channel and the third cooling channel are partitioned by the first blade partition plate and the second blade partition plate, and the air film hole communicates with the third cooling channel; and the ratio of the thickness delta1 of the first blade partition plate to T50% is 0.146-0.178, the draft angle theta1 ranges from -10 degrees to 10 degrees, the ratio of the thickness delta2 of the second blade partition plate toT50% is 0.146-0.178, and the draft angle theta2 ranges from -10 degrees to 10 degrees. The stator blade comprises an upper edge plate, the blade body and a lower edge plate, and the blade body comprises a blade suction surface, a blade pressure surface, a blade front edge, a blade tail edge and the blade cooling structure. The cooling effect is good, the pneumatic efficiency is high, and the requirements for blade cooling and cascade sealing can be met at the same time under the condition of less cold air.

The invention relates to an axial flow compressor circumferential-direction large-interval small-through-hole cartridge receiver. The axial flow compressor circumferential-direction large-interval small-through-hole cartridge receiver is structurally comprises a cartridge receiver body, a through hole and a rotor; the through hole is formed in the outer surface of the cartridge receiver and directly connected to ambient atmosphere outside the cartridge receiver, and the rotor is arranged inside the cartridge receiver; air at the through hole is driven to flow through opposite motion of the cartridge receiver and the rotor and differential pressure inside and outside the cartridge receiver at the through hole, and airflow in the through hole achieves the periodic excitation function on flowin a compressor by periodically sweeping past a flow channel of the rotor of the compressor. The axial flow compressor circumferential-direction large-interval small-through-hole cartridge receiver has the advantages of capable of inhibiting influencing range and strength of adverse low energy flow next to a blade tip of the axial flow compressor and accordingly remarkably enlarging the steady operating margin of the axial flow compressor, utilizing the unsteady excitation effect so as to have a small influence on the axial flow compressor efficiency, and being simple in structure and convenient to apply and conduct.

The invention discloses a method for suppressing secondary current ripples based on equivalent zero impedance of an active negative capacitor, the method is applied to an equivalent zero impedance circuit, the equivalent zero impedance circuit comprises a capacitor C and an active negative capacitor Crvi which are connected in series, and the equivalent zero impedance circuit is connected to the direct current side of an inverter circuit; and the active negative capacitor Crvi comprises a pair of complementary conduction switching tubes Sa and Sa, an inductor Lr and a capacitor Cr. According to the secondary ripple suppression method, secondary current ripples are absorbed on the direct-current side of the inverter, so that secondary pulsation energy is transmitted between the direct-current side of the inverter and the equivalent zero-impedance circuit, the influence on the alternating-current side is small, the equivalent zero-impedance circuit can cope with current harmonics with different frequencies, and the universality is high. Meanwhile, the equivalent zero-impedance circuit has a good secondary ripple suppression effect and a fast dynamic response in the operation process.The power density of the system can be improved, the service life of the power supply is prolonged, and the circuit stability is enhanced.

The invention discloses a digital hydraulic draught fan transmission system. A draught fan is connected with a first quantitative hydraulic pump, the first quantitative hydraulic pump is connected with a power generator through a hydraulic motor combination, wherein the hydraulic motor combination is formed by connecting a plurality of quantitative hydraulic motors and a variable hydraulic motor in parallel in a digital coding manner; the hydraulic motor combination is connected to the two ends of the first quantitative hydraulic pump in parallel; and the first quantitative hydraulic pump is connected with the hydraulic input end of the hydraulic motor combination through a one-way valve, an energy accumulator is connected between a first one-way valve and the hydraulic motor combination through a stop valve, and an oil tank is connected to the first hydraulic motor combination and the first quantitative hydraulic pump through a second quantitative hydraulic pump, a filter and a second one-way valve. Any displacement from zero to the maximum displacement is achieved through the hydraulic motor combination, influences of low displacement on the efficiency of the variable hydraulic motor are lowered to the minimum while the stepless speed regulating function is achieved, the efficiency of the transmission system at a low wind speed is improved, and meanwhile the system cost is also greatly lowered.

The invention provides a novel current sharing method and a novel current sharing device for an interleaved parallel LLC resonant converter, aiming at overcoming the defects of the existing current sharing technology. The multi-phase interleaving LLC resonant converter device comprises a multi-phase interleaving LLC resonant converter composed of N half-bridge LLC resonant converter modules, N * (N-1) / 2 active impedance balancing units and a controller, N is equal to 2 or 3, each active impedance balancing unit is connected in series between every two phases of LLC resonant converter modules, and the controller is connected in series between the half-bridge LLC resonant converter modules. And the first end and the second end of the active impedance balance unit, the resonant capacitor of the connected two-phase LLC resonant converter module and the primary side ground form a loop. By changing the equivalent impedance of the active impedance balancing unit connected in series between the LLC resonant converter modules of each phase, the output current of the LLC resonant converter modules of each phase is not influenced by the parameter deviation of the resonant element, and the output current sharing of the multi-phase interleaved parallel LLC resonant converter can be realized.

The invention discloses a plate evaporator type MVC heat pump evaporation system. The system comprises a feed preheating pipeline, an evaporation circulation pipeline, a compressing pipeline, a condensing pipeline, a water spray pipeline, a water discharge pipeline and a material discharging pipeline. The system is designed to recycle steam in order to realize energy saving, and can effectively protect a compressor and realize the automatic control adjust of the system. The evaporation system is mainly used for evaporation of chemical industry aqueous solutions, evaporation of salt forming industrial salt solutions, concentration of environmentally-friendly industrial wastewater, and other efficient evaporative concentration of clean liquids; and compared with traditional evaporation systems, the system disclosed in the invention has the obvious advantages of energy saving and great economic benefit.

The invention discloses a buried wireless charging pile for a new energy automobile, which comprises a sun shield, and a sealing cover plate, a plurality of right-angle supporting plates and a charging box, wherein the sealing cover plate, the right-angle supporting plates and the charging box are sequentially installed in a concrete embedded pit from bottom to top; the sealing cover plate coversa pit opening of the embedded pit; the upper surfaces of the right-angle supporting plates make contact with and are fixed to the lower surface of the sealing cover plate; and a wireless charging discis embedded in the upper surface of the sealing cover plate. The charging box is buried and installed, so that the occupied space of the ground is reduced; the influence of the distance on the charging efficiency is reduced through fixed-distance charging of the sealing cover plate and the automobile chassis; the temperature of the charging pump is reduced through water-cooling heat exchange of the liquid inlet pipe, so that the influence of overheat charging on the efficiency is reduced, the ambient temperature of the automobile is reduced through air cooling of the sun shield, high-temperature charging spontaneous combustion is avoided, the charging safety is improved, air-cooling automatic regulation and control are achieved through the temperature sensing pipe, and electric energy loss is reduced.

The invention provides a driving circuit and a power supply chip. Wherein the driving circuit comprises an upper tube driving module and a lower tube driving module, and a power supply negative electrode of the upper tube driving module is connected with a power supply positive electrode of the lower tube driving module. According to the configuration, different electrical characteristics of the PMOS power tube and the NMOS power tube are reasonably utilized, an intermediate level is introduced, the intermediate level is a reference ground of the upper tube driving module and a power supply of the lower tube driving module, two paths of driving currents in a traditional driving mode are ingeniously changed into one path of current, and the problem that the current is too high when high voltage is input is effectively solved. And influence of driving current on the overall efficiency of the system.

The invention discloses a method for preparing methane by anaerobic fermentation of corn straws. The method comprises the following steps of grinding recycled corn straws into small sections of 3-7 cm, uniformly mixing the ground corn straws, basic oxide, water and nitrogenous fertilizer according to the weight ratio, adding a mixture into a fermentation tank, keeping the temperature in an environment of less than 0 DEG C, heating to room temperature, stirring, adding livestock and poultry manure into the fermentation tank, sealing, and carrying out anaerobic fermentation at 35-55 DEG C for 60days. In the anaerobic fermentation process, the pH value of a fermentation system is kept at 6.5-7.8, the methane gas production rate is less influenced by the pH value and the fermentation temperature, and the methane gas production rate is relatively high.

The invention relates to an evaporator for a low-temperature multi-effect seawater desalination system. The evaporator comprises a tank body and a heat exchange mechanism fixedly connected in the tankbody, the tank body is fixedly connected with a liquid inlet pipe, and the tank body is fixedly connected with a secondary steam pipe and a liquid discharge pipe; the heat exchange mechanism comprises a heat exchange pipe assembly, a shell and a crystallization induction assembly, the heat exchange pipe assembly comprises a plurality of heat exchange pipes which are vertically arranged, the crystallization induction assembly is detachably installed on the heat exchange pipes, and the crystallization induction assembly comprises induction ropes fixedly connected with seawater crystalline saltpowder. Each heat exchange pipe is internally provided with the corresponding induction rope, and the induction ropes make contact with the inner walls of the heat exchange pipes. The effect of relieving the influence of salt deposit on the evaporation efficiency of the evaporator is achieved.