70 results about "Thermal engineering" patented technology

The invention discloses a heat pump drying experiment method based on 1D-3D joint simulation, particularly relates to the crossing field of heat energy engineering and simulation modeling, and aims to solve the problem of insufficient precision caused by disconnection of a heat pump system and cavity flow field simulation in a heat pump drying process in washing equipment such as a dish-washing machine. The method comprises the following steps: establishing a heat pump system one-dimensional dynamic model and a cavity three-dimensional flow field model, dynamically setting one-dimensionally output air supply temperature and humidity parameters as a three-dimensional inlet boundary, and meanwhile, feeding back three-dimensional air return parameters to a one-dimensional evaporator adjusting boundary to form closed-loop coupling iteration, so as to obtain a three-dimensional flow field model; dynamic high-precision simulation of the whole drying process is achieved, the structure optimization efficiency and the energy consumption evaluation reliability are effectively improved, part of physical tests are replaced, and the development cost is reduced.

The utility model discloses a heat supply pipeline repairing device for heat supply engineering, which relates to the technical field of pipeline repairing equipment and comprises a base, support legs are symmetrically and fixedly connected to the bottom of the base, movable seats are symmetrically and slidably connected to the top of the base, mounting seats are fixedly connected to the tops of the movable seats, and first arc-shaped clamping seats are fixedly connected to the interiors of the mounting seats. Fixing frames are symmetrically and slidably connected to the top of the base, second arc-shaped clamping seats are arranged at the bottom ends in the fixing frames, adjusting assemblies are installed at the bottom of the base, T-shaped grooves are symmetrically formed in the top of the base, T-shaped blocks are symmetrically and fixedly connected to the bottom ends of the fixing frames, and the T-shaped blocks are slidably connected with the T-shaped grooves. By the adoption of the structure, adjustment can be conducted according to the actual length of the pipeline, the pipeline repairing device can be suitable for heat supply pipelines of different lengths, a special repairing device does not need to be customized for the pipeline of each length, the purchase cost is reduced, and the construction efficiency is improved.

The application provides a heat pipe micro reactor steady-state multi-physical coupling method and system based on a fission response function, which integrates a fission response function physical program, a self-developed Unifoam finite element thermal program and a heat pipe program, realizes steady-state joint solution of three physical fields of nuclear neutronics, solid thermal engineering and heat pipe two-phase flow through a coupling iterative driving script, and obtains accurate power field and temperature field distribution of the heat pipe micro reactor under a steady-state working condition. The method pre-constructs a high-fidelity fission response function database through a Monte Carlo method, does not need to repeatedly perform a complex particle transport process during operation, and only needs to complete neutronics solution through matrix multiplication, so that the simulation accuracy and the calculation efficiency are effectively balanced.

The utility model discloses a steam pipeline drainage device for heat engineering, including the drainage branch pipe of being connected on steam pipeline, set up the drainage valve and the storage bucket for storing condensate water on the drainage branch pipe, be provided with filter assembly on the drainage branch pipe, and filter assembly distributes the both sides of drainage valve, and filter assembly can detachable setting is in the drainage pipe, and the water outlet of drainage valve is provided with the connecting pipe, and the connecting pipe with storage bucket is detachable connection, and the translation support mechanism is established to the below of storage bucket, and the translation support mechanism is provided with two placement sites, and each placement site can place a storage bucket. The scheme is through setting detachable filter assembly in the drainage branch pipe, realizes double filtration, prevents the impurity and blocks the drainage valve. The telescopic design of connecting pipe cooperates with the translation support mechanism, makes the storage barrel change convenient, need not stop, guarantees steam pipeline continuous operation, improves work efficiency, and storage barrel collects condensate, avoids water resource and heat waste.

The utility model discloses a pipe ditch protection device for thermal engineering, which relates to the technical field of thermal engineering auxiliary equipment and comprises a plurality of protection plates, a plurality of openings are fixedly arranged at the tops and the bottoms of the plurality of protection plates, bolts are arranged in the plurality of openings in a threaded manner, the plurality of protection plates are fixedly connected through the bolts, and an elastic cushion is fixedly arranged at the bottom of one of the protection plates. The protection plate is made of high-strength aluminum alloy and provided with the abrasion-resistant and corrosion-resistant coating, the buffering assemblies on the edges of the bottom and the top can effectively absorb and disperse impact of external force and protect a pipe ditch and a pipeline, the heat preservation layer on the inner side can reduce heat loss, heat transmission efficiency is improved, the protection plate can be rapidly connected and detached, and the service life of the protection plate is prolonged. And the construction efficiency is greatly improved.

The application discloses a method and system for improving reliability of thermal power plant thermal engineering three-out-of-two protection logic, and relates to the technical field of thermal protection logic building, which comprises the following steps: performing over-limit and non-bad quality judgment on signals of measuring points to generate first signals, second signals and third signals; performing bad quality judgment on the signals of the measuring points to generate fourth signals, fifth signals and sixth signals; inputting the fourth signals, the fifth signals and the sixth signals into a three-out-of-two module to generate a seventh signal; inputting the first signals, the second signals, the third signals and the seventh signal into a four-out-of-two module to generate an eighth signal; performing AND operation on the fourth signals, the fifth signals and the sixth signals to generate a ninth signal for detecting complete failure of the measuring points; and performing OR operation on the eighth signal and the ninth signal to generate a tenth signal. The method for improving reliability of thermal power plant thermal engineering three-out-of-two protection logic provided by the application changes the traditional three-out-of-two judgment into four-out-of-two and adds a logic judgment, and can more flexibly cope with measuring point failure conditions.

The utility model discloses a simple ash pool used in a boiler room, belongs to the technical field of thermal engineering, and solves the problems of high water consumption and low efficiency of the existing hydraulic ash removal system. The two ends of the sedimentation tank are respectively provided with a water inlet distribution channel and a grey water recycling channel, the water inlet distribution channel is connected with a water inlet pipe, a plurality of water distribution holes are formed in the channel wall of the water inlet distribution channel, the water inlet distribution channel is communicated with the sedimentation tank through the water distribution holes, and the sedimentation tank is communicated with the grey water recycling channel in an overflow manner through a partition wall between the sedimentation tank and the grey water recycling channel; a circulating water pump is arranged in the grey water recycling channel, and the output end of the circulating water pump is connected with a water outlet pipe. The device is arranged in the boiler room and is connected with an ash ditch of the boiler room, after ash water is settled in the settling pond and supernate overflows into the ash water recycling ditch, the ash water is pumped and recycled through the circulating water pump, the consumption of water for ash removal is greatly reduced, the treatment efficiency is improved through the settling separation process, and the treatment cost is reduced. The problem that ash removal water and ash are mixed and are not beneficial to discharge and treatment is solved.

The invention discloses a heat exchange station maintenance system, which belongs to the technical field of heating ventilation air conditioning and heat energy engineering, and comprises an intelligent sensing module, a data processing module, an execution module, a cooperative control module and an energy efficiency evaluation module. The intelligent sensing module achieves high-precision monitoring of heating medium parameters through a distributed optical fiber sensing network, an ultrasonic flowmeter and the like. The data processing module predicts terminal thermal load fluctuation based on an LSTM neural network model in combination with multiple types of parameters; the execution module dynamically adjusts a turbulence mode through an adjustable plate heat exchanger; the cooperative control module constructs a three-level regulation and control network to realize bidirectional cooperative optimization; the energy efficiency evaluation module improves the comprehensive energy efficiency of the system. The monitoring precision, the regulation and control efficiency and the energy utilization rate of the heat exchange station are remarkably improved, and wide application prospects are achieved.

The invention relates to the technical field of heat supply engineering, and discloses a variable type super-efficient heat supply transmission and distribution machine room which comprises a softened water system assembly, a water tank, a water supplementing assembly, a transmission and distribution assembly, a heat exchange assembly, a secondary transmission and distribution assembly and a control system assembly, and the transmission and distribution assembly comprises a volumetric multifunctional filter. According to the variable type super-efficient heat supply transmission and distribution machine room, in order to enable the machine room to adapt to dynamic requirements of heat supply of various buildings, the transmission and distribution assembly is arranged, the effective filtering area of the assembly matched with a volumetric multifunctional filter is larger than that of a traditional Y-shaped filter, water inlet resistance is greatly reduced, and the assembly is matched with an inlet and outlet pressure transmitter and an electric blow-down valve; automatic pressure difference detection and dirt discharge are achieved, cavitation of the water pump is avoided, the large, middle and small ultra-efficient energy-saving end suction pumps are combined to form seven flow gears, stepless adjustment is achieved through fine adjustment of the frequency converter, and the sealing performance is excellent in cooperation with cast steel materials and high-temperature-resistant iron core rubber balls.

The embodiment of the invention provides a synchronous coupling analysis method and device for reactor thermal software, and belongs to the technical field of nuclear power. The method comprises the following steps: stepping a first time point by a first point reactor time step length to obtain a second time point of the point reactor neutron dynamics model; matching the second time point with a third time point of the thermal hydraulic model under the condition that a point reactor calculation result of the point reactor neutron kinetic model at the second time point meets a preset calculation precision requirement to obtain a matching result; and under the condition that the matching result indicates that the second time point is not matched with the third time point, adjusting the first point heap time step length, updating the second time point to the first time point, and skipping to the step of stepping the first time point by the first point heap time step length for execution. And until the matching result indicates that the second time point is matched with the third time point. According to the embodiment of the invention, time synchronization of the two models can be realized.

The utility model relates to the field of protective sheds for thermal engineering construction, and provides a multifunctional protective shed. A left side frame and a right side frame are oppositely arranged left and right, and a top frame is simultaneously mounted at the tops of the left side frame and the right side frame; the width-adjustable top frame is installed at the top of the left side frame and the top of the right side frame at the same time, and the top protection net is installed on the width-adjustable top frame. Adjustable supporting rods are arranged between the side face of the left side frame and the top frame and between the side face of the right side frame and the top frame, and the adjustable supporting rods between the side face of the left side frame and the top frame and the adjustable supporting rods between the side face of the right side frame and the top frame form a triangular stable structure. The supporting legs are arranged to be of a telescopic structure, so that the height can be adjusted adaptively according to different actual conditions; meanwhile, the top frame of the top frame is arranged to be an adjustable top frame, so that the top frame can adapt to grooves with different widths; meanwhile, the protective net and the protective tarpaulin are arranged, so that shakeout and the like are effectively prevented, and the safety of constructors is guaranteed.

The invention relates to the technical field of building thermal engineering, solves the problems of inaccurate and incomplete evaluation of the heat storage performance of a building envelope and poor environmental adaptability in the prior art, and provides a method, a device and equipment for evaluating the heat storage efficiency of the building envelope and a storage medium to prepare a target test piece containing a functional material; carrying out a cross-characteristic change temperature interval experiment by utilizing the dynamic thermal and humid climate wind tunnel to obtain nonlinear thermal response data; constructing an enthalpy method discrete numerical model, and performing parameter inversion by taking the minimum root-mean-square error of theoretical surface heat flow and actually measured heat flow as a target to obtain thermophysical parameters and an effective specific heat capacity curve; and constructing a thermal network model based on the inversion parameters, and simulating hourly heat flow of each node of the test piece, so as to calculate a multi-dimensional heat storage efficiency evaluation index of the enclosure structure. According to the method, the high-precision wind tunnel experiment, the nonlinear heat transfer model and the inversion algorithm are coupled, the dynamic heat storage performance of the enclosure structure is accurately quantified, and an accurate and practical solution is provided for evaluating the heat storage efficiency of the functional enclosure structure.

The present invention relates to a multi-stage system for heating air for drying in general, applied to the field of thermal engineering and methods, more specifically TO the area of heat transfer and energy efficiency using solar concentrators (3) for heat a fluid, which is stored in a thermal reservoir (1), connected to a main heat exchanger (11) that performs heat exchange with the drying air, which is injected into a dryer (2). In addition to reusing residual air, by heating a secondary heat exchanger (10), it operates with a support system (16) that may be activated when necessary. The system discloses the advantages of using renewable energy for drying without affecting the environment.

The utility model relates to the technical field of heat supply pipelines, and discloses a protection device for a heat supply engineering crossing pipeline, which comprises two pipeline bodies, the end surfaces of the two pipeline bodies close to each other are arranged in a contact manner, the two pipeline bodies are arranged through a flange group, and the flange group is arranged on the pipeline body. A buffering assembly is installed between the inner wall of one flange in the flange set and the outer walls of the pipeline bodies, and a damping assembly is installed between the inner walls of the two pipeline bodies. The number of the buffering assemblies is two, and the other buffering assembly is installed between the other flange and the other pipeline body. According to the protection device for the heat supply project crossing pipeline, the buffering effect can be achieved through the arranged buffering pad, collision energy can be dispersed, damage force can be reduced, and the buffering capacity can be enhanced through the arranged hollowed-out holes and the first arc-shaped buffering rubber sheet and the second arc-shaped buffering rubber sheet which are installed in the hollowed-out holes.

The invention provides a solid-liquid mixing electric heating heat storage agent optimization method and system, and relates to the field of energy thermal engineering and artificial intelligence. According to the method, a deep neural network is pre-trained by using simulation data of a source field, and hidden layer parameters are frozen to extract universal width features. An output weight is calculated by adopting an elastic network regularization and improved alternating direction multiplier method, and high-precision modeling and prediction of the operation characteristics of the solid-liquid mixed electric heating / heat storage device are realized under a small sample condition. In order to reduce wind curtailment and light curtailment and optimize system performance, a data-driven improved transfer learning agent model method is adopted. The system comprises a solid-liquid hybrid electric heating / heat storage device which is used for quickly responding to wind and light fluctuation and long-time peak regulation and relates to multi-physical field coupling, and the operation characteristics of the system are influenced by multiple factors such as the fluid flow speed and electric power distribution. According to the method, real-time optimization of system operation parameters and control strategy formulation under complex working conditions can be realized, and the method has relatively high engineering application value.

The invention discloses a waste mineral oil multistage coupling heat exchange and gradient cooling energy-saving cooperative treatment method, which belongs to the technical field of heat energy engineering and energy conservation, and comprises the steps of pretreatment refining, fractionation cutting, molecular distillation, hydrofining, gradient cooling and intelligent control. By constructing a multi-stage coupling heat exchange network, hydrofining high-temperature waste heat is used for preheating fractionation feed, and fractionating tower top steam waste heat is used for preheating molecular distillation feed; cooling the high-temperature material flow according to the temperature by stages through a three-stage gradient cooling system, and recycling the low-temperature cold energy of the molecular distillation unit for a pretreatment process; and dynamically optimizing heat exchange and cooling operation based on an energy balance model through the central control system. According to the method, the technical problems of energy utilization splitting and serious waste heat waste in a waste mineral oil regeneration process are solved, the yield and the quality of a base oil product are greatly improved while the system energy consumption and the cooling water consumption are remarkably reduced, and an innovative solution is provided for efficient regeneration of the waste mineral oil.

The utility model discloses a telescopic fixed support belongs to the heat supply engineering technical field. The support includes the telescopic base fixed on the steel roof beam, and the telescopic base inner chamber sets up spring assembly and support, and spring assembly plays the elastic support effect to support, and the support upper end passes through the guide portion of telescopic base and extends outward and is connected steam pipeline. When the pipeline is heated and expands and contracts, the spring assembly allows the support to move vertically, releases stress, and avoids the fixed support damage. The utility model discloses simple structure, reliable, solved the steam pipeline in the high low arrangement scene and caused the stress concentration problem of the displacement of the upward position, improved the security and service life.

The invention relates to the technical field of heat supply engineering, in particular to an intelligent heat supply method and system. The method comprises the following steps that outdoor meteorological parameters and multi-dimensional operation data of a heat source, a heat supply pipe network, a heating station and a user terminal are collected in real time; preprocessing the collected data, and executing abnormal value elimination and data standardization processing; thermal load prediction is carried out based on the processed data, energy efficiency optimization is carried out, and a control instruction is generated according to time; and after receiving and executing the control instruction, the intelligent execution layer feeds back an execution effect, and the cloud intelligent analysis platform compares a deviation between the execution effect and a prediction result and dynamically adjusts the control instruction. Through intelligent sensing, analysis, decision making and execution, the actual heat supply requirement of a user can be accurately matched, the stability and reliability of the heat supply process can be guaranteed while the energy efficiency of the system is improved and the operation cost is reduced, and the intelligent management level and comprehensive benefits of the heat supply system are comprehensively improved.

The utility model discloses a thermal insulation plastic pipeline for central heating engineering, which comprises a fixing frame, a U-shaped frame and a plastic pipe, the U-shaped frame is arranged in the fixing frame, a rubber sleeve seat is fixedly mounted on the inner side of the U-shaped frame, the plastic pipe is fixedly mounted in the rubber sleeve seat, a thermal insulation layer is fixedly mounted on the inner side of the plastic pipe, and an inner pipe is fixedly mounted on the inner side of the thermal insulation layer. Buffering plates are fixedly installed on the two sides of the U-shaped frame, sliding grooves are formed in the two sides in the fixing frame, and the two buffering plates are slidably connected into the corresponding sliding grooves correspondingly. According to the heat preservation plastic pipeline for the central heating project, when the heat preservation plastic pipeline vibrates, multiple buffering and damping can be conducted on the plastic pipe, the situation that the service life of the pipeline is affected due to the fact that the plastic pipe is fatigued, embrittled and damaged due to long-time vibration is avoided, meanwhile, the situation that the environment is affected by noise caused by vibration can be avoided, and the service life of the pipeline is prolonged. And in the using process, the plastic pipe can be supported and protected through the compression-resistant support and the fixing frame, and the plastic pipe is prevented from being deformed and damaged when extruded by external force.

The invention discloses a telescopic fixing support, and belongs to the technical field of heat supply engineering. The support comprises a telescopic base fixed to a steel beam, a spring assembly and a support are arranged in an inner cavity of the telescopic base, the spring assembly plays a role in elastically supporting the support, and the upper end of the support penetrates through a guide part of the telescopic base, extends outwards and is connected with a steam pipeline. When the pipeline expands with heat and contracts with cold, the spring assembly allows the support to move vertically, stress is released, and the fixing support is prevented from being damaged. The structure is simple and reliable, the problem of stress concentration caused by upward displacement of the steam pipeline in a high-low arrangement scene is solved, the safety is improved, and the service life is prolonged.

The utility model relates to the field of heat supply engineering, and discloses a filtering mechanism of a heat supply pipe network, which comprises a pipeline, the inner wall of the pipeline is fixedly connected with a support frame, the inner wall of the support frame penetrates through and is rotatably connected with an impeller, the bottom end of the impeller is fixedly connected with a fixed plate, the bottom end of the fixed plate is fixedly connected with a fixed column, and the fixed column is fixedly connected with a filter screen. A cleaning mechanism is arranged on the inner wall of the fixing column, a filter screen is detachably installed on the inner wall of the pipeline, a dismounting assembly is arranged on the inner wall of the pipeline, the cleaning mechanism comprises a cleaning column, the top end of the cleaning column is elastically connected with the fixing column through a movable spring, and the cleaning column is slidably connected to the inner wall of the fixing column. According to the utility model, the impeller is pushed by water flow to rotate, the impeller drives the cleaning column to rotate, and the cleaning column can be used for dredging and cleaning the filter screen holes, so that the tedious steps of manually dredging the filter screen are reduced, and the working efficiency is further improved.

This invention discloses a simulated pipe device and control method for an electric heat tracing system, belonging to the field of industrial thermal engineering. The device includes an insulated simulated pipe, a support frame, an electric heat tracing cable, a temperature detector, and a power junction box, installed near the electric heat tracing control cabinet. The temperature detector detects the temperature of the simulated pipe, and the control cabinet controls the on / off state of the electric heat tracing cable accordingly. The control method associates the actual heat-traced pipe circuit with the simulated pipe device, using the centralized temperature measurement value of the simulated pipe as feedback to uniformly control the start and stop of the simulated pipe and the associated electric heat tracing cable of the actual pipe. This invention transforms long-distance distributed temperature detection into short-distance centralized detection, completely solving the problems of signal attenuation and electromagnetic interference, significantly reducing the amount of signal cables and cable trays used and construction costs, simplifying maintenance, and is particularly suitable for long-distance pipe heat tracing.

The waste heat utilization box for the heat energy engineering comprises a box body, an air inlet pipe and an exhaust pipe, supporting legs are fixedly connected to the four corners of the bottom of the box body, and the exhaust pipe is fixedly connected to the top of the box body. The box body, the air inlet pipe, the exhaust pipe, the supporting legs, the control panel, the mounting groove, the filter plate, a connecting block, a spring, a limiting block, a connecting rod, a containing groove, a limiting plate, a guide groove, a straight rod, a pressing rod, a stabilizing groove, a mounting frame, a pressure spring, an ejector block, an ejector rod, a mounting plate, a motor, a rotating rod, a cam, a sliding groove, a dust collecting hopper and a dust collecting box are matched for use; the problems that due to the fact that an existing device often lacks an automatic cleaning and convenient filter plate replacement mechanism, maintenance is complex, cleaning efficiency is low, operation stability is poor, the difficulty and time cost of manual regular filter plate cleaning are increased, it is difficult to guarantee that cleaning is thorough and effective each time, and long-term stable operation of the device is affected are solved.

This invention belongs to the field of boiler technology and provides a 232MW large-capacity circulating fluidized bed hot water boiler. It includes a high-energy ignition device, a fully membrane-walled isobaric air chamber, a primary air chamber, an air distribution plate, a coal feeding device at the furnace front, a boiler ash removal device, a secondary air box, a furnace, a high-temperature insulated separator, risers, a return feeder, a diverting flue, a tail-end vertical flue, an economizer, an air preheater, and a compartmented outlet flue. The high-temperature insulated separator is a fully downward-sloping, stepless insulated separator; the return feeder is a dual-path return structure; the tubes of the economizer and air preheater form the tail-end heating surface, which is a high-heat-exchange, self-cleaning ash-removing tube array. This invention features more stable combustion, higher separation efficiency, low flue gas resistance, reliable operation, and significant energy-saving and wear-reducing effects. It can burn various fuels such as bituminous coal, lignite, and low-quality coal, making it suitable for large-scale centralized heating projects in northern China.

The invention relates to a water supply temperature intelligent regulation and control method based on thermal characteristic analysis and migration correction. The method comprises the following steps: S1, screening thermal engineering principle characteristics; s2, data acquisition and processing; s3, segmenting the data set; s4, determining a basic model; s5, performing thermal feature recognition; s6, model combination; and S7, model application. According to the method, the load predicted value and the hydraulic flow serve as core input, the water supply temperature is expressed as a simple function form, and key thermal characteristics of pipe network characteristics in historical data are mined and transferred to a real-time operation state to be corrected and optimized. According to the method, a thermal mechanism architecture is dominated, uncertainty factors are represented, an intelligent algorithm is introduced, modular design is adopted, a lightweight modeling scheme is formed, robustness can be kept under data fluctuation and working condition changes, interpretability, self-learning, self-adaption and continuous optimization capacity are achieved, and the method is suitable for large-scale popularization and application. Therefore, dynamic prediction and quick response of the water supply temperature are realized.

The utility model belongs to the technical field of heat supply engineering, and particularly relates to a heat supply engineering waste heat recycling device which comprises a recycling tank, electromagnetic valves, a rotary connector and a motor, a water injection pipe is fixedly communicated with the upper left portion of the recycling tank, a water drainage pipe is fixedly communicated with the lower right portion of the recycling tank, and the electromagnetic valves are installed on the water drainage pipe and the water injection pipe. A first recycling assembly is arranged in the center of the inner side of the recycling tank, a second recycling assembly is arranged on the outer side of the first recycling assembly, a support is fixed to the outer wall of the left side of the recycling tank, a connecting and guiding pipe is fixedly installed at the top end of the support, a motor is fixedly installed on the outer wall of the left side of the recycling tank, and the output end of the motor is fixedly connected with a second gear. According to the utility model, the heat can be fully absorbed, the heat recovery utilization rate is higher, and the water in the recovery tank can be stirred, so that the water can be uniformly and quickly heated.

The utility model relates to the technical field of heat supply engineering and pipeline installation, in particular to a quickly-installed heat supply pipe network, which solves the problems in the background technology, and comprises a pipeline body, a support and a cylindrical pin, the outer walls of the two sides of the pipeline body are fixedly connected with connecting pieces, the connecting pieces are detachably connected with supporting rods, the support is provided with a U-shaped groove, and the cylindrical pin is arranged in the U-shaped groove. Sliding grooves are symmetrically formed in the side walls of the two sides of the U-shaped groove, a through hole is formed in the supporting rod, the cylindrical pin sequentially penetrates through the sliding groove in one side, the through hole and the sliding groove in the other side to be in threaded connection with the nut, and a rolling wheel is installed at the lower end of the supporting rod and arranged in the U-shaped groove. According to the utility model, a sliding fit structure of the U-shaped grooves and the rollers is adopted, so that not only is the self-adaptive displacement requirement during thermal expansion and cold contraction of the pipeline met, but also the sliding folding function of the supporting rods along the U-shaped grooves is realized, and the occupied space during storage is obviously reduced.

The invention belongs to the field of thermal hydraulic power, and provides a steam jet deoxygenation multi-parameter measurement and visual test device and method aiming at the problem that a special test system capable of synchronously measuring a multi-physical field process is lacked in the prior art. The device comprises a deaerator body, and a steam guide assembly, a water inlet assembly, a water outlet assembly and an exhaust port which are integrated in the deaerator body, and is equipped with a multi-parameter measurement system. The steam guide assembly realizes uniform jet flow through the axial steam guide pipe and the symmetrical steam nozzles; the water inlet assembly forms stable water flow through cooperation of the splitter plate and the guide plate. The measuring system integrates a temperature sensor, a dissolved oxygen sensor, a vibration sensor, a noise sensor and a visual window, and can synchronously monitor a temperature field, dissolved oxygen change, a gas-liquid two-phase form, equipment vibration and noise. According to the invention, different working conditions can be simulated, the influence of flow and structure parameters on the deoxidization efficiency can be researched, temperature rise and dissolved oxygen data can be acquired in real time, bubble dynamics and operation stability can be observed synchronously, and an experimental platform and data support are provided for revealing a deoxidization mechanism and optimizing equipment.

The invention belongs to the technical field of heat supply engineering, and particularly relates to a method for calculating the condensed water amount of a steam overhead pipeline. In order to solve the problem that the condensed hot water flow of the steam overhead pipeline cannot be accurately detected, the method comprises the steps that the theoretical non-condensation section length L1 of the steam overhead pipeline when the resistance loss is not considered is calculated, the flow resistance loss is calculated according to the L1 value, and the actual non-condensation section pipeline length L2 is obtained through correction. The condensation section length L3 of the steam overhead pipeline is calculated; flow resistance loss is calculated according to the condensation section length L3, and the corrected condensation section pipeline length L4 is obtained; calculating the heat dissipation loss phi 1 of the corrected condensation section pipeline in unit length; and according to the calculation result, the condensate water quantity Q in the actual condensation section pipeline is calculated.

The utility model discloses a heat supply pipeline repairing device for heat supply engineering, which relates to the technical field of pipeline repairing, and comprises a cladding pipe formed by oppositely enclosing a pair of semicircular sleeves, and an extrusion pad arranged along the circumferential inner wall of the sleeves and provided with an arc-shaped bulge arranged at the axial center position of the extrusion pad, a pair of infolded bulges obliquely arranged at the edges of the two sides of the extrusion pad, and a pair of arc-shaped bulges arranged at the axial center position of the extrusion pad. The inclined directions of the two convex parts face the axial center of the infolding bulge; the device has the beneficial effects that when the leakage point of the heat supply pipeline is repaired, the device can promote the repairing pad to apply laterally concentrated extrusion force to the leakage point from the two sides of the leakage point through the mutual matching of the extrusion pad in the sleeve and the stress part on the repairing pad, and the unique stress mode can effectively overcome interference caused by the uneven surface of the pipeline; and the attaching tightness degree of the repairing pad and the outer wall of the heat supply pipeline is remarkably improved, so that the sealing effect is greatly enhanced, the heating medium leakage risk is reduced, and the overall repairing effect is improved.