52results about How to "Solve power problems" patented technology

The invention relates to an MPPT (Maximum Power Point Tracking) control method based on dynamic optimization of a lightweight convolutional neural network, and belongs to the field of artificial intelligence control power tracking. The method comprises the following steps: S0, constructing a convolution-fuzzy neural network model which at least comprises an input layer, a convolution layer, a fuzzy control layer, a deep reinforcement learning layer and an output layer; s1, key parameters of photovoltaic equipment are collected in real time to serve as input data of an input layer; s2, performing convolution operation on the input data by using a convolution layer, extracting a feature vector, and transmitting the feature vector to a fuzzy control layer; s3, combining a fuzzy control layer with a deep reinforcement learning layer, and dynamically adjusting an optimization process of a fuzzy rule through a reward signal; and S4, the fuzzy control layer generates a control signal, and the control signal is transmitted to a DC / DC converter of the photovoltaic system through the output layer. The control method is suitable for a dynamic environment of a photovoltaic power generation system, can be expanded to a grid-connected system, and provides a new thought and technical support for efficient operation of photovoltaic power generation.

The utility model discloses a multifunctional integrated mobile energy storage charging vehicle, and relates to the technical field of mobile power supplies. A multifunctional integrated mobile energy storage charging vehicle comprises a mobile energy storage charging vehicle body and a power bank suite, the mobile energy storage charging vehicle body comprises an energy storage battery pack and a charging vehicle shell, and the power bank suite comprises a charging base and a power bank electrically connected with the charging base; the charging base is electrically connected with the energy storage battery pack and installed on the charging vehicle shell, and the energy storage battery pack is electrically connected with the charging base through the adapter. Through the arrangement of the energy storage battery pack, the charging seat, the power bank, the alternating current output socket and the like, the device not only can be deployed in an indoor and outdoor parking lot as a mobile energy storage charging vehicle to charge an electric vehicle on a parking space without a fixed mobile energy storage charging vehicle, but also can be carried along with the vehicle as an emergency power supply; or a photovoltaic power generation system is connected in an outdoor scene, and power support is provided for the vehicle at any time.

The invention discloses a vehicle air suspension system and a vehicle, the vehicle comprises a power battery, and the system comprises at least one air suspension device; the air compressor is connected with at least one air suspension device; the vehicle-mounted charger is connected with the power battery and the air compressor and used for converting direct current provided by the power battery into alternating current to supply power to the air compressor in the first working mode, so that the air compressor outputs compressed air to drive at least one air suspension device. According to the suspension system, the power battery is adopted for high-voltage power supply, the vehicle-mounted charger is reused for supplying power to the air compressor to drive the multiple air suspension devices, driving current can be reduced, loss is reduced, heating is not prone to occurring, the diameter of a distribution wire harness can be reduced, one set of high-voltage control driver can be reduced, and cost is reduced. The cost and the size can be remarkably reduced, and the supporting and damping effects of the vehicle can be improved.

The invention discloses an energy supply transformer and a monitoring system and method. The energy conversion unit comprises a shell, a sealing terminal, and an iron core, a primary winding, a secondary winding, an insulating supporting plate, an insulating limiting plate, an insulating partition plate, an insulating pad and a metal support which are arranged in the shell; the sealing terminal is arranged on the shell and is used for sealing and leading signals in the shell out of the shell; one end of the metal support is fixed with the iron core through the insulation pad, and the other end of the metal support is fixed on the inner wall of the shell; the primary winding and the secondary winding are coaxially arranged with the iron core and are sleeved outside the iron core; the insulating support plate is arranged between the winding and the iron core and fills a gap between the winding and the iron core; the insulating limiting plate and the iron core are coaxially arranged; the insulating supporting plate and the insulating limiting plate are made of high-dielectric-constant materials. And an insulating partition plate is arranged between the primary winding and the secondary winding. The invention aims to solve the problems that a cantilever beam structure is large in stress, poor in heat dissipation performance and large in boundary dimension, and a voltage-sharing capacitor needs to be arranged.

A self-energized intelligent spacer based on galloping energy collection is characterized in that a vibration energy collector is embedded in a double-pendulum anti-galloping part and is responsible for converting mechanical energy generated by galloping into electric energy, and an energy management circuit improves output power through a matching circuit and then rectifies and boosts the energy to store the energy in an energy storage element to be used by a force monitoring system and a data interconnection terminal. The intelligent monitoring system stress module deposits the dielectric printing substrate, the capacitive flexible strain electrode and the protective layer at the joint of the connecting rod and the body frame through aerosol printing, and the center of the connecting rod converts the stress condition into an electric signal and transmits the electric signal to the data interconnection module. And the data interconnection module realizes interconnection communication between the spacers and between the spacers and the intelligent power grid terminal through a low-power-consumption communication chip, and uploads data to a cloud platform through the intelligent power grid terminal, thereby realizing cloud monitoring of the line state. The integrated intelligent manufacturing technology is adopted, the integration degree is high, and the strain gauges are high in strain coefficient, low in hysteresis and high in stability.

This invention discloses a valve control device and system for extraction pipelines and its usage method, including a valve drive motor, a valve drive linkage, a trolley, and a track. The valve drive linkage is fixed to the rotational power output shaft of the valve drive motor, and the valve drive motor is fixed to the trolley via a motor frame. The trolley can slide along the track. The trolley drives the valve drive motor to move, and the valve drive linkage controls the valve status of each borehole pipeline. This invention controls the valve drive motor to rotate the valve drive linkage, thereby driving the valve wrench to rotate, achieving valve control of the extraction pipeline. Furthermore, by moving the trolley, the valve drive motor and valve drive linkage are moved and positioned, enabling valve control of multiple extraction pipelines. Compared to previous methods using explosion-proof electric three-way valves and explosion-proof electric check valves, this invention offers advantages such as low cost, small size, light weight, easy installation, no need for significant modifications to the extraction pipelines and valves, and a simple control system.

The present invention belongs to the technical field of intelligent control of range hoods, and discloses a range hood outlet wind pressure prediction method, system, storage medium and processing terminal. The method uses an experimental method to obtain different reference speeds and corresponding reference currents, wind pressures and proportional factors of the range hood under standard working conditions; collects data of the current period through a sensor or a control panel, calculates the speed relative deviation and current relative deviation; substitutes them into a fuzzy calculation model to obtain the wind pressure deviation rate; calculates the public flue wind pressure value according to the wind pressure deviation rate, proportional factor and reference wind pressure value; substitutes the calculated public flue wind pressure into the control panel, and the control panel controls the motor speed in real time according to the public flue pressure value. The present invention uses the predicted public flue wind pressure value as a parameter to adjust the speed of the fan in real time, reduces the useless power and noise of the range hood in use while maintaining the air volume, and improves the energy utilization efficiency.

The invention relates to the field of translation equipment, in particular to translation equipment, a bidirectional charging method of the translation equipment and a terminal and a storage medium. The translation device comprises a first screen and a communication module, the communication module is used for forming communication connection with a terminal so that the first screen can be in butt joint with the terminal, and the first screen and the terminal output information of different language types respectively; the system comprises a translation device, a charging port and a charging control module, and the charging control module determines whether to charge the translation device or the terminal based on the electric quantity of the translation device and the terminal under the condition that the charging port is connected with the terminal.

The invention discloses a continuous treatment device for cellulose wastewater, which relates to the technical field of wastewater treatment, and comprises a frame, a wastewater injection port is arranged above the frame; a circulating conveying mechanism, the circulating conveying mechanism comprises an annular conveyor belt installed on the frame; a wastewater collecting and drying mechanism; the wastewater collecting and drying mechanism comprises a wastewater continuous receiving tank assembly and a heating body; the wastewater continuous receiving tank assembly is installed on the annular conveyor belt; the wastewater injection port corresponds to the upper part of the wastewater continuous receiving tank assembly; the heating body is arranged corresponding to the wastewater continuous receiving tank assembly; a cellulose collecting mechanism; the cellulose collecting mechanism comprises a flexible scraper and a collecting assembly; the flexible scraper and the wastewater injection port are arranged at intervals along the conveying direction of the annular conveyor belt; the flexible scraper is adapted to abut against the wastewater continuous receiving tank assembly, and is used to scrape out solid or semi-solid cellulose; the collecting assembly is arranged corresponding to the lower part of the flexible scraper. The invention realizes the continuous treatment and recycling of high-concentration cellulose production wastewater by physical methods.

A multi-port DC-DC converter suitable for 5G base stations, the converter includes: 3 inductors L1, L2, L3, 3 capacitors C1, C2, C3, 2 diodes D1, D2 and 3 switches S1, S2, S3. When the sunlight energy is appropriate, the photovoltaic panel supplies power to the load alone; when the sunlight energy is excessive, the photovoltaic panel supplies power to the battery and the load together; when the sunlight energy is insufficient, the battery and the photovoltaic panel supply power to the load together; when there is no sunlight, the battery supplies power to the load alone. The entire converter can be switched to different modes according to different working conditions. At the same time, since the proposed converter adopts a non-isolated structure and has a small number of components, the system efficiency is improved while the system cost is greatly reduced; the addition of the battery overcomes the problems of intermittent photovoltaic power generation and unsatisfactory power supply reliability, and fully utilizes green energy to solve the problem of power supply for 5G base stations.

The present invention relates to a multi-gun charging pile group charging power control device, comprising: a power control module, a four-input and four-output switch module, and more than two charging guns, each charging gun is correspondingly equipped with a main control module and three DC charging modules, and each DC charging module is correspondingly equipped with a one-input and four-output switch module; the power control module is used to run the power distribution algorithm, control the power output process according to the voltage and current required by the charging gun, and realize the power distribution between multiple charging guns; the main control module is used for billing and realizing data interaction between the charging gun and the vehicle through CAN communication. The present invention performs real-time power distribution between multiple charging guns of the charging pile, thereby solving the problem of power waste or power shortage in different charging scenarios, and then efficiently utilizing the power of the charging pile; the charging control process of the present invention is scientific, reasonable, and simple.

The utility model provides a pure electric semitrailer with a power system, which relates to the technical field of new energy automobiles and comprises a driving system and a power battery system. The driving system comprises an integrated electric drive bridge and a master control all-in-one structure; the integrated electric drive axle comprises a drive motor, and the master control all-in-one structure controls the drive motor to generate reverse torque for auxiliary braking after receiving a braking signal. The pure electric semitrailer is provided with the driving system and the power battery system, the power battery system supplies power to the driving system, the driving system is used for assisting in driving the pure electric semitrailer and can assist in driving the tractor when running on a flat road, the auxiliary driving time is longer during climbing, and the problem that long-distance climbing power and endurance are insufficient is solved; during long-distance downhill, the large-power battery fully guarantees long-time auxiliary braking; a tractor retarder device is replaced, and the procurement cost of a tractor is reduced.

The invention provides a multi-port power supply device control circuit capable of intelligently adjusting output power, which comprises an input end of a first Type-C interface charging circuit, an input end of a second Type-C interface charging circuit and an input end of a USB-A interface charging circuit, the output end of the multi-port power supply device main control circuit is in control connection with the first Type-C interface charging circuit, the second Type-C interface charging circuit and the USB-A interface charging circuit, the output end of the first Type-C interface charging circuit and the output end of the second Type-C interface charging circuit can be connected to Type-C interface electronic equipment, and the output end of the USB-A interface charging circuit can be connected to USB-A interface electronic equipment. The method has the beneficial effects that the charging power of all the power supply ports can be intelligently adjusted according to the power used by the charged electronic equipment and the charging power of other electronic equipment which is charged at the same time.

The invention discloses a thermal noise elimination high-speed assembly line successive approximation hybrid analog-to-digital converter, which comprises a first sampling branch and a second sampling branch, and is characterized in that the first sampling branch is used for top plate sampling and is used for quantizing an MSB bit of an input sampling signal after a sampling clock signal becomes a low level for a preset time; and the second sampling branch is used for sampling the bottom plate and directly quantizing the MSB bit of the input sampling signal after the sampling clock signal is changed into the low level, and the second sampling branch is also used for quantizing the residual bits of the sampling signal according to the quantization result of the first sampling branch after the first sampling branch completes the MSB bit quantization. According to the invention, the problems of amplitude attenuation and insufficient time utilization caused by a bottom plate technology are solved, and meanwhile, the problem of trade-off between residual thermal noise average power and power consumption is solved.

The present invention discloses a tool handle with a built-in vibration sensor, comprising a tool handle body, a data acquisition circuit board, a vibration acquisition component, an electric energy receiving component and an electric energy sending component, wherein an inner hole is provided in the middle of the tool handle body, the data acquisition circuit board and the vibration acquisition component are installed in the inner hole, the electric energy receiving component is arranged on the outer surface of the tool handle body, the electric energy sending component is coaxially installed with the tool handle body, the electric energy sending component and the electric energy receiving component are arranged opposite to each other with a gap, the electric energy sending component and the electric energy receiving component perform wireless power transmission and supply power to the data acquisition circuit board. The present invention solves the problem of long propagation path of vibration signal during cutting vibration measurement, improves the signal-to-noise ratio of vibration signal, and reduces the difficulty of subsequent processing of vibration signal.

The pure electric 80-ton shovel-type support transport vehicle of the present invention belongs to the technical field of design and manufacturing of auxiliary transportation equipment for coal mines; it comprises a shovel, a front frame, a middle frame, a rear frame, a battery lifting frame and a battery rack, the shovel is arranged in front of the front frame, the front frame is connected to the middle frame through a hinged part, the middle frame is connected to the rear frame through a slewing bearing, the rear frame is connected to the battery rack through a battery lifting frame, batteries are installed on the battery rack, the slewing bearing is a double-row slewing bearing, the battery rack is also connected to the rear frame through a battery tilting mechanism, under the action of the battery tilting mechanism, the tail of the battery rack is tilted up or laid flat to adapt to different ground slopes; the present invention adopts a dual-motor single-bridge input time-sharing drive mode to solve the shortcomings of large power and large volume of a single motor, separates motors of the same power to reduce the volume, and can be applied to vehicles with thin coal seams, and the time-sharing drive can improve the efficiency of the whole vehicle and extend the cruising range of the battery shovel truck.

The application discloses a BWPT system power control method suitable for a variable receiving end of an electric vehicle. The system is composed of a network side and a vehicle side DC bus, a filter capacitor, a bidirectional full-bridge converter, a resonance compensation network, a magnetic coupling mechanism and a sampling and digital control module. The receiving end receiving coil structure is variable, and LCC or S compensation can be adopted. In the forward charging and reverse power feedback mode, the control module is based on the DC side voltage sampling and the power analysis model, and the rated output power is the primary target, and the system driving frequency and the external phase angle are adjusted. The method can realize stable and practical power control under the condition of "fixed primary side and variable secondary side".

The invention belongs to the technical field of municipal engineering, and particularly relates to an anti-blocking gutter inlet for municipal engineering, the interior of a vertical shaft is divided into a water inlet chamber and a dirt removal chamber through a partition plate, a water inlet wellhead and a dirt removal wellhead are arranged at the upper end of the vertical shaft, and a pneumatic telescopic rod for rotating a first well lid is arranged in the water inlet wellhead; the water inlet chamber is internally provided with a self-power-generating crushing mechanism for cutting up plants and plastic bags in rainwater; the self-power-generating crushing mechanism can conveniently cut up plants and packaging bags which enter along with rainwater from the opening, facing the road, of the water inlet opening, so that the situation that the rainwater inlet is blocked after the plants and the packaging bags are mixed is avoided, and waterlogging of a city due to blockage of the rainwater inlet is avoided; therefore, the pneumatic telescopic rod can drive the first well lid to turn upwards when stretching out and drawing back, blockage caused by the small water inlet of the rainstorm water inlet well mouth is avoided, and the flood drainage capacity of the gutter inlet is improved.

This invention discloses an autonomous driving power redundancy system and driving equipment, relating to the field of automotive technology. The system includes: a high-voltage power battery, a first power supply circuit, a second power supply circuit, and a third power supply circuit. The first power supply circuit includes a first DC-DC voltage conversion module, with the high-voltage power battery connected to the first DC-DC voltage conversion module, for supplying power to a first battery and a first load component. The second power supply circuit includes a second DC-DC voltage conversion module, with the high-voltage power battery connected to the second DC-DC voltage conversion module, for supplying power to a second battery and a second load component. The third power supply circuit includes a third DC-DC voltage conversion module and a circuit breaker, with the high-voltage power battery sequentially connected to the third DC-DC voltage conversion module and the circuit breaker, for supplying power to the third battery, a third load component, and part of the second load component. This invention solves the technical problem that existing technologies using a single power supply cannot meet the functional safety requirements of autonomous driving systems.

The present invention provides an uninterruptible power supply comprising: an input configured to be electrically connectable to an AC power supply; an output configured to be electrically connectable to a load; the main branch comprises a rectifier module and an inverter module which are electrically connected between the input end and the output end in sequence; the storage battery branch comprises a power conversion module and a storage battery, and the storage battery branch is configured to be electrically connected to a node between the rectification module and the inversion module; wherein the power conversion module is configured to be capable of bidirectionally transmitting and converting direct current, and comprises the following working modes: a charging mode, in which the power conversion module is configured to enable the alternating current power supply to charge the storage battery under the condition that the increment of the load capacity of the load is lower than a preset threshold value; and in the power supply mode, under the condition that the increment of the load capacity of the load is greater than or equal to the preset threshold value, the power conversion module is configured to convert the direct current output by the storage battery, so that the alternating current power supply cooperatively supplies power to the load.

The application discloses a kind of wind farm multi-objective yaw control methods considering power load comprehensive benefits, belong to wind power generation technical field.The wind farm whole tail flow modeling of yaw state is considered by analyzing tail flow model, the inflow data of each wind turbine in wind farm is determined, and the total power and average life of wind farm are quickly and accurately predicted by combining wind turbine power, thrust coefficient curve and S-N curve of transition section pipe node.Single wind turbine power optimization and wind turbine fatigue life optimization with power constraint are integrated to establish a two-stage multi-objective control optimization system, and by building a Bayesian machine learning network, the optimal yaw combination of each stage is located quickly by using efficient and accurate power and life prediction data.The application can accurately and efficiently provide the optimal yaw strategy considering power load comprehensive benefits according to real-time wind speed data, while meeting the power generation demand of wind farm, the load is maximized to extend the service life of wind turbine.

The invention discloses a capacitor voltage self-balancing method of a three-level dual-active bridge converter. Different from the conventional balance control method, the invention provides an improved switch sequence which realizes the self-balance of the capacitor voltage from the modulation level. In the improved switch sequence, when the polarity of the output voltage of the NPC full bridge is not changed, only a single capacitor is used for energy exchange. The unbalance of the capacitor voltage enables the current of the transformer to be superposed with an asymmetric current component, thereby facilitating the balance of the capacitor voltage. The improved switch sequence does not change the original output voltage characteristics of the NPC full bridge. And meanwhile, additional capacitor voltage balance control is not needed, so that the complexity of a converter control system is greatly reduced, and the robustness of the converter is improved.

The invention discloses an underwater wireless photoelectric integrated information and energy transmission device which comprises a photoelectric transmitting assembly and a photoelectric receiving assembly, and an optical vision guiding module, a wireless communication module and a wireless charging module are integrated on the photoelectric transmitting assembly and the photoelectric receiving assembly respectively. The wireless communication module is arranged in a central optical axis area of the photoelectric transmitting assembly and the photoelectric receiving assembly, and the wireless charging module is arranged on the periphery of the wireless communication module in a surrounding mode. The wireless photoelectric transmitting assembly and the wireless photoelectric receiving assembly are respectively arranged on the resident docking station and the underwater unmanned vehicle, so that light visual guidance of the underwater unmanned vehicle and long-distance low-speed data transmission between the underwater unmanned vehicle and the resident docking station are realized, and the problem of underwater wireless power supply is solved; the underwater residence time of the underwater unmanned vehicle is prolonged; and close-range high-speed data transmission between the unmanned underwater vehicle and the resident docking station is realized.

This invention relates to the technical field of welding equipment, specifically to a steel reinforcement welding device for cast-in-place box girder production, comprising a welding torch, a welding electrode feeding mechanism, and a wind shield. The welding electrode feeding mechanism is located at the front end of the welding torch. The welding electrode feeding mechanism is equipped with a sliding clamp to hold the welding electrode and feed it forward. The wind shield is located at the front end of the welding electrode feeding mechanism so that the end of the welding electrode is located inside the wind shield. The sliding clamp is connected to the power supply of the welding torch. After clamping the welding electrode, it moves the electrode. During welding, the welding electrode can be fed automatically, eliminating the need for manual feeding based on experience as in conventional welding, thus reducing welding difficulty. This also ensures that the end of the welding electrode always completes the arc discharge inside the wind shield, reducing the impact of wind on welding quality.

The invention belongs to the technical field of intelligent battery charging and replacing cabinets, and discloses an intelligent battery charging and replacing cabinet with a temperature regulation and control function, which comprises a cabinet body, a water collection mechanism is arranged above the cabinet body, a compression mechanism is fixedly connected above an inner cavity of the cabinet body, a control mechanism is arranged below the compression mechanism, and a sealing mechanism is arranged in the inner cavity of the cabinet body. The water collecting mechanism comprises a first spring piston assembly. When waterlogging occurs during raining, the ground water level drives the floating plate to rise, the temperature control charging bin and the cabinet door are sealed through the sealing air bag, water is prevented from entering an inner cavity of the temperature control charging bin, and a battery in the inner cavity of the temperature control charging bin is prevented from being damaged, and then a movable connector and a fixed connector are separated through a separation plate, so that the charging head is powered off; the situation that the battery is powered under the waterlogging condition is avoided, and therefore the situation of short circuit is avoided.

The utility model provides a power supply structure of an automatic driving vehicle, which belongs to the technical field of vehicle power supplies and comprises a main power supply, a redundant power supply, an automatic driving type load, a driving safety type load and a power supply control module. The power supply control module comprises a first switch, a second switch and a redundant controller used for controlling the on-off of the first switch and the second switch; the automatic driving load and the driving safety load are connected in parallel to form a load module, and the load module is connected to the main power supply through the first switch and connected to the redundant power supply through the second switch. According to the power supply structure of the automatic driving vehicle, the redundant power supply is added, so that the technical problem that the function safety requirement of an automatic driving system of the vehicle cannot be met by adopting a single power supply for power supply in the prior art is solved.

The application relates to the computer technical field and is particularly applied to a motion control scene in an artificial intelligence system in a production field. A simulation machine actuating cylinder motor power regulation method and system, an electronic device and a storage medium are disclosed, which comprise the following steps: setting basic parameters and establishing a multi-dimensional sensor error correction model; collecting and calibrating multi-source data such as motors, cockpit attitudes, loads, environments and abnormal sounds in real time; calculating real-time power requirements and power adaptation degrees based on a coupling model of operating actions, loads and power; fusing a tensor self-encoder and a gradient boosting tree to perform power deficiency risk prediction and abnormal sound grading early warning; adopting a multi-modal power regulation mechanism according to the prediction and determination results to implement temperature rise, overload and frequent regulation protection; collecting data after regulation to close loop correct the model and perform incremental updating. The scheme suppresses abnormal sound, improves power matching and system stability, and supports rapid adaptation of different types of simulators.

The utility model relates to a fault isolation device equipped with an electricity taking structure. The fault isolation device comprises an upper fixing seat, a lower fixing seat, a power supply module, an isolation module and an electricity taking module. Limiting seats are arranged on the lower fixing seat, the limiting seats are combined to form an assembling chamber, the power module is adaptively assembled in the assembling chamber, the upper fixing seat is fixed to the upper portions of the limiting seats, the isolation module is arranged on one side of the upper fixing seat, and the power taking module comprises a power taking column and a circuit board. The electricity taking column is arranged on the other side of the upper fixing seat; a connecting seat for accommodating a circuit board is arranged between the upper fixing seat and the lower fixing seat, and the power taking column is connected with a power supply module through the circuit board. The isolation device has the advantages of being compact in structure, high in integration degree, stable and reliable in electricity taking, rapid and effective in fault isolation and the like, the problems of an existing isolation device in the aspects of electricity taking and installation are effectively solved, the safety and reliability of an electric power system are improved, and a powerful guarantee is provided for stable operation of the electric power system.

The embodiment of the invention provides a low-side heating gradient utilization system and an operation method, the system comprises a boiler and a steam turbine, and the steam turbine comprises a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder which are connected in sequence; the heat supply system comprises a first steam pipeline and a heat supply network heater; the low-side cascade heat supply subsystem comprises a second steam pipeline, and a first shut-off valve, a first check valve and a pressure reducing valve are sequentially arranged on the second steam pipeline in the steam flowing direction. A steam side inlet of the heat exchanger is connected with an outlet of the second steam pipeline; an inlet of the third steam pipeline is connected to a steam side outlet of the heat exchanger, an outlet of the third steam pipeline is connected to the first steam pipeline, and a second check valve and a second shut-off valve are arranged on the third steam pipeline; an inlet of the water side bypass is connected to a heat supply network water return main pipe, an outlet of the water side bypass is connected to a heat supply network water supply main pipe, the water side bypass penetrates through the water side of the heat exchanger, and a flow adjusting device is arranged on the water side bypass.