6706results about "Corrosion prevention" patented technology

The invention provides an intelligent adjusting and dynamic defrosting method and system based on multiple sensors and a medium The method comprises the steps that firstly, monitoring data are obtained in real time according to the multi-dimensional sensors deployed in a freezer, and a multi-source data matrix is obtained through preset data processing and integration; secondly, dynamically adjusting a frost condition model weight coefficient according to monitoring data, and quantifying a frost condition coefficient based on a frost condition model in combination with a multi-source data matrix; then, executing a three-stage defrosting strategy according to the frost condition coefficient, and respectively adjusting working parameters of defrosting equipment such as a compressor, a condensation fan or a heater; and finally, precise control over the box temperature is achieved through power step soft start of a compressor and PID dynamic adjustment of an electronic expansion valve, and energy efficiency optimization is achieved by automatically optimizing the rotating speed of a condensation fan based on the environment temperature and humidity. The corresponding defrosting operation is triggered through the frost condition coefficient, and the effectiveness of defrosting and the stability of the box temperature are improved; in addition, the adaptability of special scenes is enhanced by dynamically adjusting the weight.

The invention provides an air source heat pump heating method and system, and relates to the technical field of heat pump system thermal control, and the method comprises the steps: collecting evaporator surface frost layer thickness, environment temperature and humidity parameters in real time, inputting the parameters to a pre-trained neural network algorithm model, and identifying a frosting rate by analyzing a multi-factor nonlinear relation; predicting a future frosting development trend, and outputting frosting thickness increase prediction and severity degree results; and according to the frosting thickness increase prediction and the severity degree result, reverse circulation defrosting is started in advance when the frost layer does not reach the critical thickness, and optimal control over the defrosting process is achieved by adjusting the opening degree of the four-way valve and the rotating speed of the draught fan, so that the system state after defrosting is obtained. The energy efficiency of the system is improved, and the heating comfort is optimized.

Disclosed is a method for defrosting a thermal regulation circuit for a vehicle, in particular for a motor vehicle, the thermal regulation circuit being provided with a refrigerant circulation loop comprising a first heat exchanger (2), susceptible to frosting, as well as second and third exchangers (4, 6), the second and third exchangers (4, 6) being intended to exchange heat between the refrigerant and a heat transfer fluid, the loop further comprising a bottle (12) for storing a part of the refrigerant, the method comprising a step, referred to as defrosting, of circulating the refrigerant successively in the second heat exchanger (4), the bottle (12) and then the first and third exchangers (2, 6), with cooling of the refrigerant in the first and second exchangers (2, 4) and heating of the refrigerant in the third exchanger (6).

The invention discloses a high-corrosion-resistance heating stainless steel composite pipe and a preparation technology thereof, and belongs to the technical field of composite pipe preparation. The stainless steel pipe serves as the innermost layer and the outermost layer, the carbon steel pipe serves as the middle part, the space between the stainless steel pipe and the carbon steel pipe is filled with the low-melting-point glass powder, the low-melting-point glass powder is melted under the high-temperature and high-pressure conditions in the machining process, and therefore welding defects such as weld cracks, air holes or gaps possibly generated in the machining process of the steel pipe are fully repaired; and the interface bonding strength and the corrosion resistance of chemical substances such as acid and alkali of the composite pipe are greatly improved, and longitudinal heat preservation and transverse heat transfer of the heating pipeline are facilitated.

The invention discloses a defrosting control device, a defrosting control method and a temperature regulation and control system. The defrosting control device comprises an acquisition module, an edge calculation module, a defrosting module and a control module, the defrosting module comprises a plurality of defrosting units arranged on the heat exchange unit; the acquisition module is used for acquiring air pressure difference of the heat exchange unit and temperature field distribution information of a set surface of the heat exchange unit; the edge calculation module is used for determining a critical defrosting threshold value and frost layer thickness distribution information of a set surface according to the wind pressure difference and the temperature field distribution information; the control module is used for determining a target defrosting area according to the frost layer thickness distribution information and the critical defrosting threshold value and controlling the defrosting unit corresponding to the target defrosting area to conduct defrosting. The invention provides a defrosting control device, a defrosting control method and a temperature regulation and control system, which can reduce the defrosting energy consumption, ensure the continuous work of the temperature regulation and control system where a heat exchange unit is located during defrosting, prolong the service life of the temperature regulation and control system and increase the application scene of the temperature regulation and control system.

The invention provides a constant-heating defrosting system of a heat recovery air conditioner and a defrosting control method and device. According to the system, a compressor, a first electromagnetic valve, a water tank, a first expansion valve, a first one-way valve, a second electromagnetic valve, an outdoor heat exchanger and a four-way valve are connected to form a first heating loop; a compressor, a first electromagnetic valve, a water tank, a first expansion valve, a first one-way valve, a third electromagnetic valve, an energy storage water tank, a fourth electromagnetic valve and a four-way valve are connected to form a first defrosting loop. A compressor, a fifth electromagnetic valve, a second one-way valve, an outdoor heat exchanger and a four-way valve are connected to form a second defrosting loop; and the first heating loop, the first defrosting loop and the second defrosting loop form a single heating water defrosting loop. The problem that in the prior art, in the defrosting process, the comfort experience of a user is affected due to the fact that an air conditioner does not conduct heating is solved.

The invention relates to the technical field of air conditioners, in particular to a defrosting control method and system for a low-temperature variable-frequency air source heat pump and computer software. According to the method, through multi-point temperature monitoring and external environment parameters, the working frequency of the compressor and switching of the four-way valve are dynamically adjusted by applying the prediction model, and the frost layer forming and eliminating process is accurately recognized. And high-frequency defrosting can quickly defrost, and after a frost layer is preliminarily removed, low-frequency maintenance is switched, so that energy consumption is reduced. And in the defrosting process, the energy recovery device is matched, waste heat is introduced into the energy storage system and used in subsequent heating, and the overall energy consumption is further reduced. According to the scheme, the defrosting time is effectively shortened, the temperature reduction range of the water tank is reduced, the energy-saving and heating requirements are met, and wide practical value and popularization prospects are achieved.

The invention relates to the technical field of refrigeration, in particular to an anti-icing refrigeration method and system.The anti-icing refrigeration method comprises the steps that water temperature data in a water tank are collected in real time, and temperature dynamic parameters reflecting the temperature change trend and stability are calculated; dynamically adjusting the opening degree of the electronic expansion valve based on the temperature dynamic parameter; when the temperature dynamic parameter meets a preset icing triggering condition, deicing circulation is executed; a compressor and an electronic expansion valve are closed, and a circulating pump is started; monitoring the temperature dynamic parameter in real time in the deicing cycle, dynamically adjusting the duration of the deicing cycle based on the temperature dynamic parameter, judging whether a preset deicing completion condition is met or not based on the temperature dynamic parameter, if not, continuing the deicing cycle, and if yes, terminating the deicing cycle. And the compressor and the electronic expansion valve are restarted to recover the refrigeration cycle. The technical problems that in the prior art, due to freezing, energy consumption of a refrigerating system is too high, and the automation degree is insufficient are solved.

The utility model relates to the technical field of shell and tube heat exchangers, and discloses a shell and tube heat exchanger with a heat exchange area adjusting function, which comprises a shell and two supporting seats, the top surfaces of the two supporting seats are fixedly connected with the bottom surface of the shell, an adjusting mechanism and a filtering mechanism are arranged on the outer side of the shell, and the filtering mechanism is positioned on the outer side of the adjusting mechanism; the adjusting mechanism comprises an adjusting assembly and a heat exchange assembly. The adjusting assembly is located on the surface of the heat exchange assembly. The heat exchange assembly comprises two tube boxes. According to the shell-and-tube heat exchanger, the tube box and the tube plate are conveniently mounted and dismounted through the adjusting mechanism and the heat exchange assembly by means of first bolts, an operator can conveniently dismount and maintain the interior of the shell-and-tube heat exchanger, the adjusting assembly drives two sliding blocks to move by means of a double-end threaded rod, and therefore a baffle slides out of a sliding groove and blocks water entering a heat exchange tube; the number of the heat exchange pipes is adjusted, the heat exchange area is conveniently controlled, the heat exchange requirements under different working conditions are met, and the flexibility and efficiency of the shell and tube heat exchanger are improved.

The invention discloses an efficient gradient utilization medium and low temperature flue gas waste heat recovery system and method, and relates to the technical field of waste heat recovery. When the contact time between the medium and low temperature flue gas and a heat medium is short and the heat conduction contact area is small, the heat transferred to the heat medium by the medium and low temperature flue gas is small, the waste heat recovery amount is small, and the recovery effect is affected. The arc-shaped recess in the center of the inner side of the heat medium bin is matched with the smoke exhaust mechanism, the contact area between the inner side of the heat medium bin and smoke is increased through the recess, the smoke exhaust mechanism limits smoke exhaust, the contact area between the smoke and the heat medium bin is increased, and meanwhile the contact time between the smoke and the heat medium bin is prolonged; the heat of medium and low temperature flue gas is more effectively transferred to the heat medium in the heat medium bin, and the situation that the flue gas and the heat medium bin are small in contact area and short in retention time, heat is not completely transferred and discharged, and the waste heat recycling rate is low is avoided.

The invention provides a heat exchanger with an anti-blocking function, which comprises a fixed clamping plate and a movable clamping plate, and a plurality of plate sheets are arranged between the fixed clamping plate and the movable clamping plate. Alternate use of the arc-shaped filter screens is achieved through the rotating design of the second closed barrel, when the filtering effect of a certain filter screen is affected by impurity accumulation, other unblocked filter screens can work in time, it is guaranteed that liquid is continuously and smoothly filtered, the situation that the heat exchange process is interrupted due to blockage of a single filter screen is avoided, and efficient operation of equipment is maintained; the arc-shaped filter screens are backwashed through the spray heads, the four filter screens can be comprehensively cleaned in sequence in cooperation with rotation of the second closed barrel, when deep cleaning is needed, the output shaft of the servo motor rotates clockwise to drive the spray heads to move in a reciprocating mode, more thorough washing is achieved, impurities attached to the filter screens are effectively removed, and the service life of the filter screens is prolonged. The service life of the filter screen is prolonged and the equipment consumable replacement cost is reduced.

The invention relates to the technical field of heat exchangers, and particularly discloses an efficient heat transfer device of a heat exchanger for a geothermal source heat pump, which comprises a heat exchanger shell, a water tank and a buried pipe, end covers are installed at the two ends of the heat exchanger shell, and heat exchange pipes are arranged in the heat exchanger shell. A cold source water inlet pipe and a cold source water outlet pipe are arranged on the outer wall of the heat exchanger shell; the water tank is arranged outside the heat exchanger shell; the buried pipe is buried in soil; a heat source water inlet pipe communicated with the buried pipe is arranged on the end cover at one end of the heat exchanger shell, and a heat source water outlet pipe communicated with the water tank is arranged on the outer wall of the end cover at the other end; a water conveying mechanism is further arranged outside the heat exchanger shell. A descaling mechanism is arranged in the heat exchanger shell; in the long-time working process of the heat exchange pipe, the outer wall of the heat exchange pipe is cleaned through the descaling mechanism, water scales on the outer wall of the heat exchange pipe are scraped off, and the heat exchange efficiency is improved.

The invention discloses a defrosting control method and device and a heat pump system.The method comprises the steps that S1, a first operation parameter is detected in a defrosting mode, whether a first defrosting condition is met or not is judged, if yes, the defrosting mode continues to be operated, and if not, a heating mode continues to be operated; and S2, in the heating mode, detecting a second operation parameter and whether the second operation parameter meets a second defrosting condition or not, if yes, operating the defrosting mode and returning to the step S1, counting the number of times that the first defrosting condition is not met, and if the number of times that the first defrosting condition is not met exceeds a first preset number of times, controlling the heat pump system to stop and sending out a fault prompt. Whether the heat pump system is abnormal or not is preliminarily judged by detecting the water inlet and outlet temperature difference and the refrigerant inlet and outlet temperature difference of the water side heat exchanger in the defrosting mode, and then the abnormal condition of the heat pump system is further confirmed by combining the water inlet and outlet temperature difference of the water side heat exchanger during operation of the heating mode, so that the abnormal condition can be found in time, defrosting is stopped, and the heating efficiency is improved. And icing or damage of the water side heat exchanger is reduced.

An air-conditioning apparatus includes configured to, during a heating-defrosting operation mode in which one of a first outdoor heat exchanger and a second outdoor heat exchanger connected in parallel with each other is defrosted as a target to be defrosted, compare a first condensing temperature obtained when the target to be defrosted is switched from one to the other with a second condensing temperature obtained when a normal heating operation mode in which the first outdoor heat exchanger and the second outdoor heat exchanger operate as evaporators is switched to the heating-defrosting operation mode, reduce, when the first condensing temperature is less than the second condensing temperature, an opening degree of a flow control device smaller than an initial opening degree, and increase, when the first condensing temperature is greater than the second condensing temperature, the opening degree larger than the initial opening degree.

The invention relates to the technical field of heat exchangers, and discloses a plate-fin heat exchanger with an anti-blocking function, which comprises a heat exchanger body, the left side of the heat exchanger body is fixedly communicated with an inlet pipe, the left side of the inlet pipe is fixedly connected with a buffer box, and the left side of the heat exchanger body is fixedly communicated with a discharge pipe. The front portion of the buffer box is fixedly connected with a fixing plate, the top of the fixing plate is fixedly connected with a motor, and the output end of the motor is fixedly connected with a rolling wheel. Impurities and dirt which are doped in fluid and attached to the filter plate in the working process of the heat exchanger body can be scraped away, and the service life of the filter plate is prolonged; impurities and dirt are prevented from being attached to holes in the inner wall of the filter plate for a long time, the filter plate is blocked, normal work of the device is affected, impurities can be prevented from entering the heat exchanger body, the service life of the device can be prolonged, and the heat exchange effect of the device can be improved.

The invention discloses a solar energy-phase change heat storage collaborative parallel evaporator segmented defrosting system and method, and belongs to the technical field of air source heat pump defrosting and new energy utilization. Comprising evaporator sets (A / B) arranged in parallel, a compressor, a condenser, a four-way reversing valve, a solar heat collecting plate, an electromagnetic valve, a temperature sensor and a connecting pipeline. A phase change material interlayer is embedded in a finned tube of the evaporator set, the phase change material is connected with the solar heat collection plate through a circulation pipeline, the phase change material absorbs or releases a large amount of latent heat in the solid-liquid phase change process, and heat collected by the solar heat collection plate is stored in a high-density mode. When the evaporator is frosted, heat stored by the phase change material can be released directionally, and melting of a frost layer is accelerated. Through the synergistic effect of solar energy and phase change heat storage, the defrosting time is remarkably shortened, indoor temperature fluctuation caused by reverse circulation is reduced, meanwhile, the energy utilization rate is increased, the structure is simple, the cost is controllable, and the efficient defrosting requirement of the air source heat pump in the cold region is met.

The invention discloses a defrosting control method and device, refrigeration equipment and a storage medium, and belongs to the technical field of defrosting. According to the defrosting control method, in the first stage, the heater is controlled to defrost the evaporator; entering a second stage when the defrosting state of the first stage meets a first condition; and in the second stage, a compressor exhaust pipe of the refrigerating system is controlled to communicate with the evaporator to conduct hot gas defrosting, and when hot gas defrosting is conducted under the first condition, the heat exchange medium flowing out of the evaporator is in a gaseous state. According to the defrosting control method disclosed by the invention, the heater is firstly controlled to defrost, and then the compressor is controlled to defrost by hot gas, so that staged defrosting is realized; the defrosting state of the first stage is controlled, so that the surface temperature of the evaporator is not too low when hot gas defrosting is carried out, heat exchange media flowing out of the evaporator are prevented from being liquefied, and liquid impact is prevented; and meanwhile, the heater is turned off in the second stage, and excessive heat generated by the heater can be prevented from overflowing to the compartment.

The utility model provides a secondary refrigerant online monitoring and automatic adjusting device and a refrigerating system. The secondary refrigerant online monitoring and automatic adjusting device comprises a control system, an anti-freezing solution container and a freezing point detector arranged on a secondary refrigerant circulating pipeline. The anti-freezing solution container is connected to the secondary refrigerant circulating pipeline through a first pipeline, and a first pump assembly is arranged on the first pipeline; the secondary refrigerant circulating pipeline is connected with a discharge branch, and a discharge valve is arranged on the discharge branch; the first input end of the control system is connected with the output end of the freezing point detector, the first output end of the control system is connected with the electric control end of the discharge valve, and the control system is connected with the first pump assembly. The freezing point information of the secondary refrigerant is directly detected more accurately, when the anti-freezing solution needs to be supplemented, a part of old secondary refrigerant is discharged through the discharge valve, then the anti-freezing solution is supplemented, concentration recovery of the anti-freezing solution is accelerated, the problem of ice blockage can be effectively solved, full-automatic control is achieved, and the stability and durability of a refrigerating system are improved.

A coolant treatment device includes: a first tank having a bottom portion; a first pipe that is connected to the bottom portion; a first coolant discharge portion that discharges a coolant such that a swirling flow of the coolant is produced on a peripheral edge region of the bottom portion; a second coolant discharge portion that is provided at a position where the second coolant discharge portion faces the first coolant discharge portion across a central region of the bottom portion in a top view, and that discharges the coolant such that a swirling flow of the coolant is produced on the peripheral edge region; and a third coolant discharge portion that discharges the coolant in a direction which is directed from the peripheral edge region toward the central region and which avoids an opening of the first pipe in the central region in a top view.

The invention discloses a novel high-temperature-resistant and corrosion-resistant aluminum alloy plastic-lined PP-RCT composite pipe, and relates to the technical field of composite pipelines. The composite pipe is of a five-layer gradient composite structure, wherein the outer layer is an anodized aluminum alloy base body, and the inner surface is provided with laser micro-texture anchoring points; the secondary layer is a chromium-free Dacromet anti-corrosion layer, and the interface bonding force is improved through a three-dimensional network structure; the third layer is a gradient curing bonding layer which is cured by stages to eliminate thermal stress; the fourth layer is a dynamic stress compensation layer for absorbing the thermal expansion difference between the metal layer and the plastic layer; and the inner layer is a PP-RCT functional layer which has high temperature resistance and corrosion resistance. The end of the composite pipe is sealed through laser welding, an embedded intelligent monitoring system is integrated, and axial stress and temperature are monitored in real time. Compared with the prior art, the invention is suitable for pipeline systems under extreme working conditions of petrochemical engineering, ocean engineering, high-temperature fluid transportation and the like.

The invention discloses a novel washout-corrosion-resistant waste heat recovery heat exchanger, and aims to solve the problem of washout corrosion of high-temperature and high-speed dust-containing flue gas to the heat exchanger. The heat exchanger comprises an upper shell, a lower shell, an integrated side plate box, heat exchange tubes, a discharge outlet, interception fins and the like. The heat exchange pipes are distributed in a multi-group array mode, and smoke impact is reduced through a smooth surface and a dense structure. The inverted-V-shaped intercepting fin plate is located above the discharge outlet and can intercept particles in the flue gas and recycle the particles through the negative pressure pipe. The whole device adopts a multi-channel structure to guarantee the flue gas treatment and flowing efficiency. The heat exchanger can reduce erosive wear, prolong the service life of equipment, stably recover waste heat and guarantee smooth proceeding of subsequent processes, is suitable for high-temperature dust-containing flue gas scenes such as an aluminum melting furnace, and is energy-saving and environment-friendly.

A ventilation system including a ventilator; and an outdoor unit, wherein the ventilator includes a housing including a first intake, a second intake, a first outlet and a second outlet, a plurality of dampers to change flow paths of air flowing through the housing, first and second air blowers, a heat exchanger in the housing, and a processor to control the dampers and first and second air blowers to form a first flow path in which outside air flows through the heat exchanger, or form a second flow path in which room air flows through the heat exchanger, to thereby form a flow path in the ventilator, while air flows through the flow path, control the outdoor unit to form frost on the heat exchanger, and control the outdoor unit to stop operating based on a preset frosting termination condition so that the frost melts to clean the heat exchanger.

The invention relates to the technical field of coalification black water treatment, and particularly discloses a coal gasification black water flash steam waste heat steam turbine gradient utilization system which comprises a black water flash steam turbine module and a steam exhaust condensation module. The black water flash steam turbine module comprises a high-pressure flash evaporator, a low-pressure flash evaporator, a vacuum flash evaporator, a supplementary condensing steam turbine, a generator and a settling tank, and a water outlet of the vacuum flash evaporator is connected with the settling tank; the steam exhaust condensation module comprises an evaporative condenser and a condensate pump. Through the design of the scale scraping and water uniformizing piece, part of cooling water falling around the heat exchange coil from top to bottom falls on the water uniformizing plate to drive the water uniformizing plate to rotate, when the water uniformizing plate rotates, water on the water uniformizing plate is thrown out under the action of centrifugal force, cooling water without heat exchange can be uniformized to other heat exchange pipes for heat exchange, and the heat exchange efficiency is improved. Therefore, the cooling water flows more uniformly among the heat exchange coils, the utilization rate of the cooling water is improved, and the heat exchange efficiency is improved.

The invention discloses a waste heat recovery system which comprises a heat exchange module, a control module, a thermoelectric conversion module, a pollutant recovery module, a pretreatment module and a carbon dioxide conversion module. The heat exchange unit comprises a heat exchanger and the like, a smoke inlet is connected with a boiler, and the heat exchanger recovers waste heat. The control unit is provided with a sensor group, a microprocessor and a controller, the sensor group comprises various sensors for detecting smoke related information, and the controller is provided with a self-adaptive learning module and a fault prediction subunit. The thermoelectric conversion module is connected with the heat exchange unit, and a heat dissipation structure is arranged in the thermoelectric conversion module. The carbon dioxide conversion module has a reactant supply unit. The heat exchange unit further comprises a heat storage subunit and the like. The device has the advantages that the heat exchange efficiency is improved through the heat exchange pipeline with the self-adaptive pipe diameter, the cost is reduced through the modular design, maintenance is convenient, the operation stability is improved through the controller function, and multi-stage energy utilization and carbon dioxide resource utilization are achieved through the thermoelectric conversion and carbon dioxide conversion module.

The utility model relates to the technical field of middle-deep layer heat exchange well devices, in particular to an open type middle-deep layer heat exchange well device which comprises a well wall pipe. The central pipe is installed in the well wall pipe, the water filtering pipe is installed on the well wall pipe, and a heat exchange runner is formed between the well wall pipe and the central pipe; the casing pipe is located in the heat exchange well and penetrates through the water-containing stratum to stretch into the rock heat type heat reservoir, and a first annular gap is formed between the outer wall, located in the rock heat type heat reservoir, of the casing pipe and the inner wall of the rock heat type heat reservoir. The water filtering pipe comprises an upper water filtering pipe and a lower water filtering pipe, the upper water filtering pipe is located in the middle of the casing pipe, and the lower water filtering pipe is located at the bottom of the casing pipe or close to the bottom; according to the device, the positions of the upper water filter pipe, the lower water filter pipe and the water stop device are reasonably arranged, so that a heat exchange medium can be in direct contact with a rock heat type heat reservoir, the mineral content in the heat exchange medium is increased, and rock heat type geothermal resources are suitable for hot spring bathing; meanwhile, the heat exchange efficiency of the heat exchange well is improved.

The present application relates to the technical field of refrigerators and discloses an inner liner assembly, comprising: an inner liner having a refrigerator compartment internally configured; a windshield disposed within the inner liner and enclosing a dehumidification interlayer with a first sidewall of the inner liner, the dehumidification interlayer being in communication with the refrigerator compartment; a thermal insulation layer covering the outer surface of the inner liner and avoiding the first sidewall; a cold source portion at least partially attached to the outer surface of the thermal insulation layer and at least partially attached to the outer surface of the first sidewall, such that the cold source portion provides cooling to the first sidewall; and a semiconductor dehumidification module disposed within the dehumidification interlayer and comprising a cold-end heat sink and a hot-end heat sink. The cold-end heat sink is configured to dehumidify gas flowing from the refrigerator compartment into the dehumidification interlayer; the hot-end heat sink is disposed proximate the first sidewall to dissipate heat from the first sidewall. The inner liner assembly utilizes the first sidewall, which is at a lower temperature, to dissipate heat from the hot-end heat sink, thereby improving the heat dissipation effect of the hot-end heat sink and the dehumidification efficiency of the semiconductor dehumidification module. The present application also discloses a refrigerator.

The present application relates to a system and method for supplying cascade energy using waste heat from a power plant during production. The waste heat from the power plant during production is connected to a heat source inlet of a lithium-bromide absorption chiller and to a waste water inlet of a waste water heat exchanger, and a heat source outlet of the lithium-bromide absorption chiller is connected to the waster water inlet of the waste water heat exchanger and to a water return port of the waste heat from the power plant during production; the lithium-bromide absorption chiller is connected to a chilled water intake line, a chilled water output line, a cooled water intake line and a cooled water discharge line, the cooled water discharge line is connected to a clean water side inlet of the waste water heat exchanger, and a clean water side outlet of the waste water heat exchanger is sequentially connected to a water purification device and a hot water tank; the clean water side inlet of the waste water heat exchanger is connected to a heating water return line, and the clean water side outlet of the waste water heat exchanger is connected to a heating water supply line; and a water outlet of the waste heat from the power plant during production is further connected to a heat source inlet of a solution regenerator, and a waste water outlet of the solution regenerator is connected to the water return port of the waste heat from the power plant during production. The system of the present application has high energy utilization efficiency, thus effectively expanding the range of waste-water waste heat utilization.

The anti-blocking equipment for the heat exchanger comprises a base, the top of the base is fixedly connected with a U-shaped frame, the interior of the U-shaped frame is fixedly connected with a heat exchanger body, the top of the U-shaped frame is fixedly connected with a dredging tank, the interior of the dredging tank is fixedly connected with two filtering plates, and the interior of the dredging tank is rotationally connected with a connecting rod; the connecting rods penetrate through the filter plate, cleaning brushes are fixedly connected to the outer portions of the connecting rods and located on one side of the filter plate, and fan blades are fixedly connected to one ends of the connecting rods. The utility model has the beneficial effects that impurities on the filter plate can be automatically removed, and the requirement of frequent manual cleaning or replacement of the filter plate is avoided, so that the maintenance workload and the related cost are obviously reduced, good permeability can be continuously kept, the flow resistance of fluid is reduced, the heat exchanger body is ensured to operate in an optimal state, and the service life of the heat exchanger body is prolonged. And compared with a traditional device, the operation quality and the use efficiency are greatly improved.

The invention discloses an air cooler distributed dynamic defrosting control method, and relates to the technical field of air cooler distributed defrosting, and the method comprises the following steps: obtaining the spatial position and wind direction and flow direction information of an air cooler in a refrigeration environment and the defrosting exhaust state of an adjacent air cooler, building a heat exchange state space-time perception map based on a space coordinate relation, and obtaining a heat exchange state space-time perception map; the determination module is used for determining whether the air cooler is interfered by defrosting airflow of adjacent air coolers; acquiring temperature, humidity, current and air volume data of the air coolers which are determined to be interfered by defrosting airflow of the adjacent air coolers, constructing a heat exchange characteristic curve of the target air cooler in the current time period, and performing residual error fitting calculation on the heat exchange characteristic curve and a standard heat exchange curve in a historical non-defrosting state; and determining the local heat exchange parameter distortion performance of the air cooler caused by the defrosting airflow interference of the adjacent air cooler. The problem that defrosting is triggered by mistake due to the fact that the air cooler is interfered by defrosting airflow is solved, and accurate recognition and dynamic control optimization of the defrosting requirement are achieved.

The invention discloses a heat pump circulation system and a heat pump circulation control method. The heat pump circulating system comprises a compressor, a first condenser, a second condenser, an evaporator, an expansion valve, a first switch valve, a second switch valve and a third switch valve, and the compressor communicates with the first condenser through a first branch pipeline of a first pipeline and communicates with the second condenser through a second branch pipeline. The first condenser and the second condenser are connected in series through the second pipeline, the first switch valve is arranged on the first branch pipeline, the second switch valve is arranged on the second branch pipeline, and the third switch valve is arranged on the second pipeline. By controlling the on-off of the first switch valve, the second switch valve and the third switch valve, the heat pump circulation system has a primary heating mode in which only the second condenser participates in work and a secondary heating mode in which the first condenser and the second condenser work simultaneously, so that the heat exchange efficiency of the condensers is improved.