1176 results about "Main duct" patented technology

The invention discloses a refrigeration pipe welding positioning method and device. The method comprises the following steps that S1, branch pipes are placed in all storage boxes; s2, the main pipeline is placed in a matching groove of the supporting frame, and the main pipeline is fixed through cooperation with a pressing ring; s3, a third electric cylinder is started, the third electric cylinder drives a supporting frame and the main pipeline to move to be close to the welding gun, and a branch pipe of the main pipeline moves to cross the welding gun; s4, a first electric cylinder is started, and the first electric cylinder drives a synchronous plate and an ejector sleeve to move; the motor, the first chain wheel, the second chain wheel, the chain and the hollow rotating disc are matched to drive the vortex line groove and linear groove linkage adjusting block and the rolling wheel to move, the purposes of clamping positioning and circle center correction of the branch pipe are achieved, the branch pipe is corrected to the position concentric with the disc, the coaxiality of the branch pipe and a main pipeline branch pipe is guaranteed, and the machining efficiency is improved. And the quality problems of insufficient welding, welding skips, poor welding seam forming and the like caused by positioning deviation are avoided.

The invention relates to the technical field of aviation electromechanics, in particular to an electric ducted fan of an integrated heat dissipation structure and an aircraft. An electric ducted fan of an integrated heat dissipation structure comprises a main duct unit, a static blade unit, a movable blade unit, a motor, a heat dissipation duct unit and a heat dissipation unit. The main duct unit comprises a main duct wall; a main duct channel is arranged in the main duct wall; the stationary blade unit comprises stationary blades; the movable blade unit comprises movable blades; each heat dissipation duct unit comprises a heat dissipation duct wall; the heat dissipation duct wall is annular; a heat dissipation duct channel is formed in the heat dissipation duct wall; the radiating unit comprises a radiator; a cooling liquid flow channel and an air flow channel are arranged in the radiator; the cooling liquid flow channel is used for conducting heat of the battery; the air flow channel penetrates through the radiator in the axial direction of the heat dissipation duct channel. Therefore, the problem that the heat dissipation efficiency and the flight performance of the battery in the aircraft are difficult to consider at the same time is solved.

The invention relates to the technical field of welding cooling, and provides a liquid nitrogen spraying welded plate cooling device and a design method thereof.The cooling device comprises a liquid nitrogen source used for providing liquid nitrogen; the input end of the spraying module is connected with a liquid nitrogen source through a main pipeline, the output end of the spraying module is provided with a plurality of spraying holes corresponding to the surface of the welded plate, and the main pipeline is provided with a flow regulating valve; the temperature acquisition module comprises a plurality of temperature sensors which are arranged at temperature measuring points of a welding plate; the control module is electrically connected with the temperature acquisition module and the flow regulating valve respectively; the structure of the spraying device is optimized through flow field simulation, it is ensured that liquid nitrogen is evenly distributed to the surface of a welded plate, local supercooling or superheating is avoided, and uniform cooling of the welded plate is achieved; data are collected through the temperature sensor, closed-loop control is formed in cooperation with the PID controller and the multiple adjusting valves, the liquid nitrogen flow, the spraying area and the spraying time can be accurately regulated and controlled, the inter-channel temperature is effectively controlled, the temperature is prevented from being too high, and it is guaranteed that the welding process is continuously and stably carried out.

The invention discloses a well drilling fracturing device for oil field yield increase, and relates to the technical field of oil field collection, the well drilling fracturing device comprises a fracturing filtering mechanism and a bottom rotating bearing installed in the fracturing filtering mechanism, the bottom of the fracturing filtering mechanism is provided with a connection sealing mechanism, and the bottom of the connection sealing mechanism is provided with a main pipeline; the fracturing filtering mechanism comprises a filtering support, a plurality of sewage draining holes are formed in the outer side of the filtering support, a worm gear limiting cover is fixedly installed at the bottom of the filtering support, rotating supports are symmetrically installed on the side, close to the interior of the worm gear limiting cover, of the filtering support, and rotating motors are fixedly installed on the outer sides of the rotating supports; by utilizing the structural characteristics of the vortex cleaning impeller, when the vortex cleaning impeller rotates anticlockwise, the temporary plugging agent can move towards the inner side of the filter screen cylinder under the action of the groove in the vortex cleaning impeller, so that the conveying efficiency of the temporary plugging agent is improved, and meanwhile, the vortex cleaning impeller can clean the outer surface of the filter screen cylinder.

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A flow of working fluid may be adjusted to a percentage sufficient to maintain temperature of the flow of compressed gas within the selected operating temperature range.

The invention discloses an energy-saving control system for dust removal equipment. The energy-saving control system comprises production equipment, a suction pipe net, an air door assembly, an air door control module, an air pressure detection device, a suction device and a main control module. The production equipment is provided with a machining area and a workpiece detection module. The suction pipe net is composed of a main pipeline and branch pipelines, and the branch pipelines correspond to all devices and are provided with air door assemblies. The air door control module opens and closes an air door according to the workpiece detection signal; the air pressure detection device monitors the air pressure of the main pipeline, the main control module adjusts the power of the suction device accordingly, and the system achieves on-demand dust removal, accuracy, high efficiency and remarkable energy conservation.

The invention relates to the field of machining environment-friendly treatment, in particular to an atomized cutting fluid discharging and treating system and a control system and method thereof. The treatment system comprises a centralized exhaust system, a gas collecting hood, an induced draft fan, a wind pressure buffer device and an adjustable wind resistance structure in the buffer device. The induced draft fan is a frequency conversion fan, and the power can be automatically adjusted manually or through a state sensing device so as to adapt to the atomization state of the equipment. The air pressure buffering device is arranged between the induced draft fan and the main air pipe, airflow resistance is changed by adjusting an air resistance structure, and outlet air pressure stability is achieved. The control system comprises a plurality of sensors and is used for collecting wind pressure and flow speed in real time, and the controller generates a control instruction based on collected data and drives the wind resistance structure to dynamically respond to induced air changes. The system is high in adaptability, atomized cutting fluid gas generated by open-type equipment can be efficiently collected, the emission control effect is improved, and safe connection with a centralized exhaust system is guaranteed.

A control method is for a compressed air supply system with which a control device is associated. The method includes: receiving via the control device a supply demand, activating a compressed air generator to provide compressed air at a compressed air connection when the control device receives a supply demand, identifying a regeneration execution time depending on the supply demand and / or a degree of saturation of an air dryer, activating a switching valve to open a branch line when the control device identifies a regeneration execution time, and returning compressed air from the branch line counter to a filling direction through a pneumatic main line to regenerate the air dryer. A control device is for carrying out the method. A vehicle includes such a control device.

The invention relates to a mixing apparatus (1) with a main line (3), in which a liquid (F) flows along a direction of flow (FR), and a secondary line (9). The main line (3) has an inlet (4), an outlet (5) for discharging the liquid (F) conducted through the main line (3), and a three-way valve (8) at a beginning (6) and at an end (7). The secondary line (9) is connected via the three-way valves (8) to the main line (3) and, together with the main line (3), forms a mixing circuit (MKL). The liquid (F) can be pumped with a pump (11) through the main line (3) and through the secondary line (9) in the mixing circuit (MKL). In addition, at least one additive inlet opening (26) is provided on the main line (3) for adding an additive into a mixing zone (M) of the main line (3). The mixing apparatus (1) furthermore has at least one swirling means (13) in the main line (3). The invention moreover relates to a washing machine having such a mixing apparatus (1) and to a method for intermixing an additive with a liquid (F).

The conveying and injecting system comprises a main pipeline, a cooling device and a supercharging device, the main pipeline is used for receiving supercritical carbon dioxide from a carbon dioxide capturing device, and the other end of the main pipeline is connected with an inlet of the cooling device; the cooling device is used for cooling the supercritical carbon dioxide to a preset temperature, so that the supercritical carbon dioxide is converted into dense-phase carbon dioxide, an outlet of the cooling device is connected with an inlet of the pressurizing device, an outlet of the pressurizing device is used for being connected with an injection well, and the pressurizing device is used for pressurizing the dense-phase carbon dioxide to a preset pressure. According to the conveying and injecting system, carbon dioxide is conveyed to the vicinity of a sealing place in a supercritical phase state in a long distance in the main pipeline and then conveyed to the injecting well after being cooled and pressurized, and the pressure of supercritical carbon dioxide is smaller than that of dense-phase carbon dioxide, so that the risk that the main pipeline is broken can be reduced; and the stability and safety of carbon dioxide conveying are improved.

The invention relates to the technical field of medical equipment, and discloses an intelligent temperature control and flow control system for hemodialysis, which comprises a dialysis pipeline shunting shell; the two main pipelines are arranged in the dialysis pipeline shunting shell, and a plurality of slave pipelines are arranged between the two main pipelines; when the flow rate of the liquid is low, the slave pipeline is far away from the heating component, the temperature of the liquid cannot rise too fast under the condition that the flow rate is low, the knob part can move to the slave pipeline when controlling the valve component to increase the flow rate of the liquid, and the slave pipeline moves close to the heating component. The distance between the auxiliary pipeline and the temperature rising component is reduced, when the flow rate of liquid with large flow is high, the auxiliary pipeline gets close to the temperature rising component, heat generated by the temperature rising component can be better received by the auxiliary pipeline and conducted to the liquid, and the flow adjusting system and the temperature control system can cooperate to achieve the purpose that the flow adjusting system and the temperature control system work together. A preset temperature value can be provided for the dialysis liquid all the time when the flow is increased or decreased.

The invention discloses a reactor coolant system flow monitoring device and a signal control method, and belongs to the technical field of reactor coolant systems.The reactor coolant system comprises at least three main loops, a first pressure tapping hole located in the outer wall is formed in a main pipeline transition section elbow of each main loop, and a second pressure tapping hole located in the outer wall is formed in the main pipeline transition section elbow of each main loop; the at least four second pressure tapping holes are formed in the inner wall; the flow monitoring device comprises at least four first differential pressure sensors and at least two second differential pressure sensors; the positive pressure ends of the at least four first differential pressure sensors are communicated with the first pressure tapping hole, and the negative pressure ends of the at least four first differential pressure sensors are communicated with the at least four second pressure tapping holes in a one-to-one correspondence mode. The at least two second differential pressure sensors are arranged in parallel, and the two ends of the at least two second differential pressure sensors communicate with an inlet pipeline and an outlet pipeline of the main pump on the main loop correspondingly.

The invention relates to the technical field of water distributors, in particular to an underground water distributor for oil exploitation, which comprises a main pipeline, two ends of the main pipeline are fixedly connected with an upper joint and a lower joint respectively, the main pipeline is slidably connected with an opening valve, a return spring is arranged between the opening valve and the upper joint, the opening valve is in contact with the lower joint, and the main pipeline is provided with a water distribution core. A first sliding block is connected to the water nozzle in a sliding mode, valve plates are arranged on the two sides of the water nozzle, the first sliding block can slide along with changes of pressure and drive the valve plates on the two sides to move, the opening size of the water nozzle can be controlled through movement of the valve plates, and therefore the water nozzle can be conveniently adjusted; when the size of the water nozzle on a certain layer is actively adjusted, the sizes of the water nozzles on other layers can be automatically adjusted according to the water flow pressure change, so that the water nozzles on other layers are prevented from being respectively tested and adjusted when the water nozzles of the water distributor on a certain layer are adjusted, and the working efficiency is improved.

The invention discloses a temperature and humidity control shunting device and a gluing developing machine, and relates to the technical field of wafer processing. A main pipeline is connected with an air outlet of THC equipment, so that the temperature and humidity of gas supplied into a shunting box are the same, and the temperature and humidity of the gas are equal by means of shunting of four uniformly distributed shunting pipelines and conveying of pipelines with the same length and specification; homologous constant-temperature and constant-humidity gas is conveyed into the four cavities, synchronous control over the supply temperature and humidity of airflow in the four cavities is achieved, interference to the constant-temperature and constant-humidity gas in the conveying process can be reduced, and the precision control over the temperature and humidity in the wafer gluing operation process can be effectively improved; the stability of the working environment of the equipment is effectively ensured, and the device is suitable for precision equipment with higher environmental requirements.

The utility model provides a flue gas desulfurization device for a blast furnace hot blast stove, which relates to the technical field of desulfurization and comprises a main pipeline, a heat exchange component, a desulfurization component and a barrier plate, the main pipeline is used for being connected between the hot blast stove and a chimney, and the barrier plate is arranged on a pipeline for communicating an outlet of the heat exchange component with a second valve body. An inlet of the heat exchange assembly communicates with the first valve body, an outlet of the heat exchange assembly communicates with an inlet of the desulfurization assembly, and an outlet of the desulfurization assembly communicates with the second valve body. The blocking plate is arranged between the outlet of the heat exchange assembly and the second valve body, the outlet of the heat exchange assembly is communicated with the inlet of the desulfurization assembly, the outlet of the desulfurization assembly is communicated with the second valve body, and the first valve body and the second valve body on the main pipeline are fully utilized; a valve body does not need to be additionally arranged on the portion, located between the second valve body and the chimney, of the main pipeline, the built chimney and the main pipeline do not need to be reconstructed, and the reconstruction difficulty is reduced.

The utility model relates to a detachable automatic backwashing filtering device which comprises a main pipeline, a bypass pipeline and a blow-off pipeline, a liquid inlet and a liquid outlet are formed in the two ends of the main pipeline respectively, and an inlet self-control valve, a filter, a standby self-control valve and an outlet self-control valve are sequentially arranged between the liquid inlet and the liquid outlet in the liquid flowing direction. The bypass pipeline and the blow-off pipeline are both communicated with the main pipeline, a bypass self-control valve is arranged on the bypass pipeline, and a blow-off self-control valve is arranged on the blow-off pipeline. An inlet pressure gauge and an outlet pressure gauge are arranged on the main pipeline; and all the pressure gauges and the self-control valves are connected into an industrial automatic control system. By arranging the bypass pipeline and the blow-off pipeline, backwashing of the filter can be realized without shutdown, so that washed impurities are directly flushed into the blow-off pipeline and discharged. The automatic control valve and the pressure gauge are connected into an industrial automatic control system, so that the filtering system can be monitored in real time, and the blockage condition of the filter can be automatically judged.

The invention discloses an integral skid-mounted device of an oil well manifold, and relates to the field of oil extraction equipment. The main pipeline, all the pipe fittings in the liquid inlet pipe set and the instrument and meter pipeline are all prefabricated pipelines, so that the pipeline does not need to be cut and machined on an assembly site, and during assembly, the main pipeline, the liquid inlet pipe set and the instrument and meter pipeline as well as all the pipe fittings in the liquid inlet pipe set are connected and installed through the hoop connecting pieces; the pipelines do not need to be connected and assembled through welding; by prefabricating the pipelines and connecting and assembling the pipelines through the hoop connecting pieces, the pipelines are more convenient and faster to connect and install, the preparation and assembly efficiency of the whole skid-mounted device of the oil well manifold is improved, the construction time is shortened, meanwhile, cutting and welding are not needed in the assembly process, sparks are not generated, and the production cost is reduced. Therefore, the assembly safety of the whole skid-mounted device of the oil well manifold is improved.

The utility model relates to a sewage treatment device. The sewage treatment device comprises a shell, a main pipeline and an aeration device, an inner cavity is formed in the shell, and a water outlet communicated with the outside is formed in the upper portion of the shell. The main pipeline is arranged in the inner cavity, a first cavity is defined, and the part, located outside the main pipeline, of the inner cavity is marked as a second cavity; a communicating opening for communicating the first chamber with the second chamber is formed in the bottom of the main pipeline; a water inlet for inputting sewage into the first chamber is formed in the upper part of the main pipeline; the aeration device is arranged in a position, lower than the water inlet, in the first cavity and performs aeration from bottom to top so as to form upwelling in the first cavity; a scum discharge pipe communicated with the outside is arranged at the upper part of the main pipeline, and scum in the sewage is discharged through the scum discharge pipe under the action of upward flow. According to the sewage treatment device, the whole flow of sewage treatment is integrated in the same device, so that the treatment efficiency is improved, the occupied space is saved, and the energy consumption is reduced.

The utility model provides a Helmholtz silencer based on a quasi-zero stiffness element, which belongs to the technical field of pipeline silencers and comprises an air cavity, a panel is mounted in the air cavity and connected with the air cavity through a vibrating diaphragm, a boss is fixedly mounted on the panel, and the vibrating diaphragm is connected with the boss. The boss is connected with one end of the supporting spring in the radial direction of the main pipeline, the other end of the supporting spring is connected with the air cavity, the two ends, in the axial direction of the main pipeline, of the boss are connected with one end of the pre-compression spring respectively, and the other end of the pre-compression spring is connected with the air cavity. The low-frequency noise in the pipeline is effectively controlled, the low-frequency noise control device has the advantages of being compact in structure, small in size and the like, and if noise of different frequencies needs to be controlled, only the compression amount of the pre-compression spring needs to be adjusted to change the overall rigidity of the structure; under the condition of the same neck area, a smaller air cavity volume can be adopted, the rigidity of each spring can be freely adjusted, and the height of the back cavity is greatly reduced.

To measure a flow rate of coolant accurately.SOLUTION: A flow measurement device 100 of fast reactor comprises: a flow rate measurement part 131 for measuring flow rate of coolant in a reflow piping 4 connecting a secondary system pump 2 circulating liquid metal sodium provided in the fast reactor as coolant and main piping 3 for supplying coolant to the secondary system pump 2, the reflow piping for reflowing coolant flowing in above a bearing 23 provided in the secondary system pump 2 to the main piping 3; a liquid level measurement part 132 for measuring liquid level of surface of coolant within the secondary system pump 2 to thereby generate liquid level data indicative of relation between time and liquid level; a change amount calculation part 133 for calculating a change amount of flow rate of coolant in the reflow piping 4 on the basis of differential data obtained by incompletely differentiating the liquid level data; and a main piping flow rate calculation part 134 for calculating flow rate of coolant in the main piping 3 on the basis of the measured flow rate of coolant and the calculated change mount of the flow rate of coolant.SELECTED DRAWING: Figure 2

The utility model relates to the field of hydrogen storage and distribution, in particular to a hydrogen single-path skid-mounted frame which comprises a frame body, a main pipeline, a rear end pipeline and an emptying pipeline are installed on the frame body, and a stop valve, a needle valve, a first pressure gauge and a first-stage pressure reducing valve are sequentially installed on the main pipeline. The rear-end pipeline is connected with the first-stage pressure reducing valve, a second-stage pressure reducing valve, a ball valve, a pressure release valve, a flow control meter and a second pressure gauge are sequentially installed on the rear-end pipeline, the main pipeline and the rear-end pipeline are both connected with an emptying pipeline, and a one-way valve is installed on the emptying pipeline; an inlet of the main pipeline and an outlet of the rear-end pipeline are connected with purging pipelines; and angle valves are mounted on the purging pipelines. A nitrogen purging pipeline is additionally arranged, the cleanliness of gas in the pipeline can be kept, meanwhile, a pressure release valve is arranged, the first-stage pressure reducing valve and the second-stage pressure reducing valve can be prevented from being damaged, rear end valves can be prevented from being damaged by high-pressure gas, the gas can be exhausted into the atmosphere in time, and safety is enhanced.

The present application relates to cable sheathing technology field, disclose a kind of based on distribution valve's optical cable sheathing color-changing feed device, including, with the throat of extruder communication main pipeline, further include: two respectively with different color color masterbatch warehouse communication branch pipeline, and two branch branch pipeline with the main pipeline form Y shape convergence section in the way of oblique insertion;Main valve and two branch valves in branch pipeline are located in main pipeline, and two branch valves can switch start-stop closure;Between the round shell connected between main pipeline and extruder, the inner cavity is opened in the round shell, and the inside of the inner cavity is installed with rotatable adjustment cylinder.The fixed dead space between "Y shape convergence section-extruder throat" is replaced by 180 ° rotatable cross valve core in the present application, and horizontal pressure difference airflow is formed by using the same mechanical stroke to drive piston cylinder at switching moment, old material in switching channel is blown out as a whole, and the effect of physical cutting old material section and transition length shortening is achieved.

According to the wet desulphurization slurry circulating system, the main slurry circulating pumps are arranged on the multiple independent slurry circulating pipelines respectively to meet the desulphurization requirements under different loads, meanwhile, the branch backflow pipelines and the standby slurry circulating pumps are additionally arranged, and the electrically operated valves are arranged at the inlets and outlets of the standby slurry circulating pumps and the main pipelines; when the main slurry circulating pump is in a standby state, the electric valve on the main pipeline can be kept normally open, and small-range circulation of slurry among the main pipeline, the branch backflow pipeline and the absorption tower is formed by opening the electric valve of the branch backflow pipeline and the standby slurry circulating pump. Slurry deposition and blockage at the inlet end of the main slurry circulating pump caused by normally opening of an electric valve on the main pipeline are avoided; when the main slurry circulating pump needs to be switched from standby to operation, due to the fact that the electric valve on the main pipeline is normally opened, the main slurry circulating pump can be started to be quickly put into operation only by stopping the standby pump firstly, and the long-time opening process of an inlet electromagnetic valve in a traditional sequential control program does not need to be waited.

The application relates to the technical field of power cables, in particular to a high-stability MPP power cable protection pipe, vice pipes are connected at two ends of a main pipe through connecting plates, positioning rings are located in the inner cavities of the vice pipes, a plurality of installation grooves are equidistantly arranged on the outer walls of the two vice pipes, first protrusions are mirror-imaged arranged at the bottom ends of the sidewalls of the installation grooves, a plurality of guide grooves are arranged on the connecting plates along the axial direction of the main pipe, a guide plate is arranged on the outer wall of the main pipe, one end of a fixing mechanism is located in the vice pipe, the other end of the fixing mechanism is located in a guide groove through the guide groove, an adjusting ring is sleeved on the outer side of the guide plate, and the two fixing mechanisms are sleeved on the outer walls of the two vice pipes; the pipe material is fixed by using two fixing modes of heating and fixing mechanism, the firmness and durability of the pipe material at the connection position are improved; the fixing mechanism is moved in one direction, the adjusting ring matched with the fixing mechanism can simplify the pipe material connection steps and save labor.

The invention belongs to the technical field of tunnel construction ventilation, and particularly relates to an air volume compensation system and method for single-hole auxiliary main-hole multi-working-face air bin type ventilation. The system comprises a main fan, an air bin, a purification bin A, a purification bin B and a dirty air capturing module, the main fan is arranged outside the transverse hole and connected with a main air pipe, the main air pipe penetrates through the purification bin B in the transverse hole and is connected with the air bin, the air bin is arranged at the position where the transverse hole intersects with the left line of the main hole and the right line of the main hole, and an inclined branch hole is formed in the position where the left line of the main hole intersects with the transverse hole. The purification bin A is arranged in the inclined branch hole, relay fans are arranged at the air outlets, along the left line and the right line of the main hole, of the air bin correspondingly, and air distribution pipes are installed on the relay fans correspondingly. Dirty air exhausted by a tunnel face is purified through the purification bin A and then supplied to the air bin to serve as air volume compensation, negative pressure and high energy consumption during air bin operation are reduced, dirty air exhausted by multiple working faces is treated through the purification bin B, air flow circulation at the intersection position is accelerated, and the air quality in a tunnel is guaranteed.

The invention discloses a flexible direct current converter valve submodule operation test system and a submodule loss calculation method. A tested valve section and an accompanying test valve section are connected in parallel on a main loop; the main loop is connected with a power supply through a contactor KM, and a direct current anode contactor KM1, a test accompanying valve section anode, an inductor L, a tested valve section cathode, a test accompanying valve section cathode and a direct current cathode contactor KM2 are sequentially arranged on the main loop from the power supply anode to the power supply cathode; water cooling pipelines are arranged in the tested valve section and the test accompanying valve section, and the IGBTs are connected in series through the water cooling pipelines; the water cooling system comprises a main pipeline for cooling water circulation; and the water cooling pipelines in the tested valve section and the accompanying test valve section are respectively connected in parallel to the main pipeline. The water-cooling radiator is monitored in a non-intrusive mode, and the sub-module loss of the operation valve section can be directly estimated.

The invention relates to the field of overflow well pipeline drainage, and discloses an intelligent overflow well pipeline drainage system which comprises a pipe wall vibration monitoring module used for collecting a drainage main pipeline vibration signal, extracting vibration characteristics and generating an abnormal positioning report, and a sensing node response regulation and control module used for generating a pressure regulation and control strategy instruction. The shaft pressure gradient analysis module is used for obtaining time sequence data of a shaft axial pressure probe based on a pressure regulation and control strategy instruction and generating a pressure gradient map, the drainage flow planning module is used for obtaining shaft real-time water level data, calculating the water level change rate and generating a drainage instruction, and the valve scheduling module is used for scheduling the drainage flow according to the drainage instruction. And generating a valve control instruction set. According to the method, three-dimensional anomaly positioning is achieved through association of the pipeline vibration time-frequency characteristics and the sealing ring dielectric parameters, anomaly recognition is enhanced in combination with the pipe network topology and the pressure gradient matrix, the dynamic flow threshold value is generated through self-adaptive regulation and control of the sealing state, and the early warning precision and the regulation and control efficiency are improved.

The utility model relates to fire control system technical field discloses a kind of fire water pressure control systems, including water pump and fire pipe network, pressure detector is located in the main pipeline of fire pipe network, controller is connected with the output end of pressure detector, star delta starting circuit is connected with the output end of controller, and is connected with the input end of water pump, electric valve is connected with the output end of controller, for controlling water flow break and flow regulation.The utility model detects the pressure value in the main pipeline of fire pipe network in real time by setting pressure detector, when fire pipe network is used, when pressure value increases, water pump is automatically opened by controller and the opening of electric valve is adjusted, improve fire water pump response time, water pump and electric valve linkage, controller automatically adjusts water pump opening and closing according to the pressure value in fire pipe network, avoid the power consumption caused by water pump 24 hours always open.

The utility model discloses a medical inflatable mattress, including base pad, a plurality of airbags, pumping equipment, main pipeline, branch pipe, a plurality of monitoring module, silica gel pad and mask, said airbags are uniformly arranged on the upper surface of base pad, monitoring module includes air inlet pipe, pressure sensor and solenoid valve, the inside of pumping equipment is equipped with air pump and controller based on STM32 single-chip microcomputer, and the main pipeline, branch pipe, a plurality of monitoring module, silica gel pad and mask are equipped with the air pump and the controller based on STM32 single-chip microcomputer. The air pump is connected with the air bags through a main pipeline and branch pipes, the controller is used for receiving signals of the pressure sensors and controlling the electromagnetic valves and the air pump to be opened and closed, the silica gel pad is used for embedding the air bags and pipelines, and the mask is detachably connected with the bottom pad through a zipper. Independent air pressure monitoring and dynamic adjustment of a single air bag can be achieved, the fitness of the mattress and the human body is improved, the problem that overall inflation is inconvenient is solved, meanwhile, damaged parts are convenient to replace through modular structural design, structural stability and maintenance convenience are enhanced, and comfort and reliability of medical care are improved.

This utility model discloses a flow rate regulating mechanism for an ash conveying pipeline. It includes a main pipeline and a secondary pipeline. A secondary pipeline is located on one side of the main pipeline, and an regulating disc is located on one side of the secondary pipeline. A rotating mechanism is located on one side of the regulating disc. The rotating mechanism includes a rotating bar, a rotating spring, and a control bar. The rotating bar is rotatably mounted on one side of the regulating disc. By controlling the main rod to drive the secondary rod to rotate, the positions of the extension frame and the docking frame are adjusted. The movement of the extension frame and the docking frame allows the rotating bar to spray gas outwards. Simultaneously, the size of the outlet and the annular channel are controlled while adjusting the angle. This results in a smaller outlet and increased gas pressure at a given gas flow rate, allowing the gas to be sprayed further and towards the inner wall of the main pipeline, effectively blowing away dust from the side wall. The annular channel remains open, allowing air to exit along the center, achieving the effect of conveying gas through the center.