241results about How to "Stable pressure" patented technology

The utility model belongs to the technical field of oil-gas separation, and particularly relates to an oil-gas separation and recovery device which comprises a venturi ejector, a high-pressure gas source, a cold air source and a recovery component, and the venturi ejector is provided with an oil steam inlet, a high-pressure gas inlet, a cold air inlet and an output port. The high-pressure gas inlet and the output port are oppositely formed in the two ends of the Venturi ejector, the oil steam inlet and the cold air inlet are formed in the side, close to the high-pressure gas inlet, of the throat pipe, and oil steam, high-pressure gas and cold air are introduced into the Venturi ejector through pipelines. The venturi ejector is connected with an output pipeline at an output port of the venturi ejector, and the recovery assembly is arranged on the output pipeline. High-pressure gas is introduced into the Venturi ejector, negative pressure is generated in the Venturi ejector to suck oil steam and cold air, the oil steam and the cold air are fully mixed at the throat pipe, the condensation phase change effect of an oil-gas mixture in the throat pipe and a follow-up pipeline is improved, and condensed oil drops are collected through the recovery assembly.

This utility model discloses a stainless steel storage tank with good sealing performance for chemical production, including a tank body. A sealing cover is provided on the top of the tank body for sealing. A driving pressing assembly is provided on the surface of the tank body. The driving pressing assembly is used to drive and press down the sealing cover, improving the sealing performance between the sealing cover and the tank body. A connecting rotating assembly is provided on the sealing cover. This utility model achieves automated pressing and releasing of the sealing cover through the driving pressing assembly, replacing the traditional one-by-one bolt tightening operation. The sealing ring at the bottom of the sealing cover, together with the annular positioning block and annular positioning groove at the top of the tank body, form a triple sealing structure. The annular positioning block is embedded in the annular positioning groove for precise positioning, preventing the sealing cover from shifting. The pressing plate applies uniform pressure through the driving pressing assembly, ensuring a tight fit between the sealing ring and the upper edge of the tank body, eliminating local gaps.

The application discloses a kind of pneumatic directional drilling system and drilling method suitable for local water-containing soft coal seam, including directional drill bit, screw drill, conversion nipple, non-magnetic drill tool, multiple special directional drill pipes and air feeder connected in order from back to front;The screw drill includes output shaft end head connected with the directional drill bit and stator end head sleeved on one side of output shaft end head, and output shaft end head can rotate relative to the stator end head, by setting screw drill and conversion nipple, both directional drilling in water-containing soft coal seam can be guaranteed, and strong blowing process can be implemented to discharge drill cuttings and formation water in hole to outside of hole in time, keep drilling operation continuous and smooth, greatly reduce the amount of operation of pulling down drill during construction, and the comprehensive drilling efficiency can be improved by more than 20%, solve the technical problems of poor formation adaptability of prior art, and cannot realize strong blowing and cuttings discharge and rapid switching of directional drilling during directional hole construction process in local water-containing soft coal seam, resulting in low drilling efficiency.

This invention discloses a mobile aluminum ladle baking device, relating to the field of metallurgical equipment technology. It includes a base frame, with a lifting unit and several support frames fixedly mounted on the upper end of the base frame. An installation unit is located on the front side of the lifting unit, and an igniter unit is fixedly connected to the bottom front side of the installation unit. A gas delivery unit is located on the upper part of the support frames, a gas control unit is located on the upper right side of the installation unit, and an air supply unit is located on the upper left side of the installation unit. This invention, through the base frame, electric forklift, traveling unit, and support units, achieves flexible movement, rapid positioning, and stable support of the device within the work area; the lifting unit enables precise lifting of the installation unit, igniter unit, gas control unit, and air supply unit; and the gas delivery unit, gas control unit, air supply unit, and igniter unit ensure safe gas delivery and precise gas-air mixing.

The utility model discloses a kind of overflow well cementing plug casing pressure stabilizing devices, comprising: pressurizing pipeline, pressurizing pipeline input end is provided with single-flow valve, pressurizing pipeline output end is provided with adjustable pressure relief valve, pressurizing pipeline middle part is equipped with tee pipe, tee pipe one end outlet is connected with four-way pipe, four-way pipe is communicated with buffer, four-way pipe other end outlet is communicated with casing, tee pipe and the communication pipeline of sleeve are equipped with first gate valve, pressurizing pipeline is equipped with second gate valve and third gate valve respectively set in the two sides of tee pipe. The present application solves the problem that the cost of well killing fluid is high, and well killing fluid has an impact on the performance of cement slurry.

The utility model discloses a self-adaptive force stabilizing device for characterizing a mechanoluminescence cycle process, and belongs to the technical field of material testing. According to the device, collaborative operation is achieved through a reciprocating testing mechanism and a force loading mechanism which are in linkage design; the reciprocating testing mechanism drives a lead screw transmission assembly through a servo motor to drive a single-axis moving platform, a pressure digital display and a material to achieve reciprocating friction in the y-axis direction; the force loading mechanism pulls a sliding platform to slide on a sliding rail through a spring, a round-bottom quartz tube is arranged at the end of the force loading mechanism and is in point contact with a sample of a pressure digital display accessory, and when the sample is slightly abraded to cause position change, the spring dynamically compensates pressure loss to ensure that force loading in the x-axis direction is constant. An optical fiber is integrated in the round-bottom quartz tube to synchronously collect mechanoluminescence signals. The device solves the problem of force attenuation in the existing cycle test, and is beneficial to systematic research on the cycle characteristics of the mechanoluminescent material.

The utility model relates to the technical field of steam extraction flow stabilizing equipment of steam turbines, and particularly discloses a power station industrial steam extraction small-flow adjusting device which comprises a steam extraction main pipe and an adjusting pipeline, the steam extraction main pipe is communicated with the adjusting pipeline, a sunken U-shaped pipe is arranged in the middle of the adjusting pipeline, and an automatic adjusting valve is installed on a bottom pipeline of the U-shaped pipe. A filter and a drain pipe are further installed on the U-shaped pipe, the filter is located in front of the automatic regulating valve, and the drain pipe is located behind the automatic regulating valve; the design of the U-shaped pipe is adopted, steam conveyed by a low-pressure steam pipe network is collected and climbs through the U-shaped pipe, pressure relief and drainage are conducted through timing opening of the drainage pipe, air in the pipeline is discharged, the arrangement pressure and flow in the pipeline are adjusted to be more stable, and the problems of adjustment oscillation and large pressure fluctuation are avoided; an automatic regulating valve is adopted for starting control at the bottom full pipe position, the flexible regulating capacity of an energy system is improved, the resource utilization rate is increased, and economic benefits are created for companies.

This invention discloses a comprehensive performance testing system for an electronic expansion valve. One end of an electric proportional valve is connected to the outlet of a gas storage tank via a booster pump, and the other end is sequentially connected to valve 1, a first pressure sensor, valve 3, valve 6, a second pressure sensor, a stepping solenoid valve, valve 8, and a first flow meter. One end of valve 2 is connected between valve 1 and the first pressure sensor, and the other end is left unconnected. One end of valve 5 is connected to the connection point of valve 3 and the first pressure sensor, and the other end is connected to one end of valve 4. The other end of valve 4 is connected to the connection point of valve 6 and the second pressure sensor. One end of valve 7 is connected between the first pressure sensor and the stepping solenoid valve, and the other end is left unconnected. One end of valve 9 is connected between the stepping solenoid valve and valve 8, and the other end is connected to the second flow meter. The inlet and outlet of the electronic expansion valve under test are connected between valve 3 and valve 6, and between valve 5 and valve 4, respectively.

This utility model discloses a modular electrolytic reaction tank for preparing high-purity metallic magnesium, belonging to the field of metallic magnesium reaction tanks. It includes a reaction tank body, with a cover plate fixedly connected to the upper surface of the body by multiple bolts. A conveying pipe is fixedly connected to the left side of the upper surface of the cover plate. A collection box is fixedly connected to the right side of the lower inner surface of the reaction tank body. A through-type collection port is opened on the upper left side of the inside of the collection box. This utility model achieves efficient and rapid separation through the unique structure of the collection box and related components. When the liquid magnesium reaches a certain thickness, the level gauge detects a signal, the electric push rod is activated, pushing the sliding plate two. Through the gas box and gas delivery hole, the sliding plate one moves the baffle one upward, opening the collection port. Liquid magnesium quickly flows into the collection box, greatly reducing the residence time of liquid magnesium in the reaction tank body, effectively reducing impurity dissolution, and improving the purity of metallic magnesium and product quality.

This utility model discloses a diesel engine return oil pressure regulating control device, belonging to the field of diesel engine fuel system control technology. It includes a dry pump, a pressure regulating valve, a pipeline assembly, and a control circuit assembly. The pipeline assembly uses engineering pipelines. The pressure regulating valve is used to regulate the pressure at the dry pump inlet to ensure that the engine return oil pressure meets project requirements and that the return oil pipeline system is balanced. The control circuit assembly includes two power supply systems, a relay, and a benchtop control module. The power supply system consists of a regulated power supply and a power line. One end of one power supply system is connected to the negative terminal of the dry pump, and the other end of the normally open contact of the relay is connected to the positive terminal of the dry pump. One end of the other power supply system is connected to one end of the relay coil, and the other end of the relay coil and the other end of the power supply system are respectively connected to the switching terminals of the benchtop control module. This utility model has the technical advantages of precise pressure regulation, strong adaptability to operating conditions, convenient installation and maintenance, and high system reliability.

The utility model discloses a pressure stabilizing control valve with a double-cavity structure, which comprises a valve body, two sides of the valve body are fixedly connected with connecting pipes, the inside of the valve body is fixedly connected with a partition plate, the inside of the partition plate is fixedly connected with a water through ring, and the top end of the valve body is movably connected with a mounting cylinder. According to the pressure stabilizing control valve of the double-cavity structure, the positioning base is arranged, a positioning bolt is rotated to be separated from the interior of a threaded hole after being used for a long time, then a positioning disc can be pulled to detach the mounting barrel from the top end of the valve body, and then a spring in the mounting barrel can be detached to be rapidly replaced; the situation that the pressure stability is affected by fatigue due to long-time work of the spring is prevented, after completion, the mounting cylinder is inserted into the positioning base, meanwhile, the positioning disc is attached to the top end of the positioning base, the positioning bolt penetrates through the positioning disc and then is rotated into the threaded hole, and therefore the mounting cylinder is positioned through the positioning disc, and the problem that the pressure value is not stable enough after long-time work is solved.

The utility model belongs to the field of underground self-rescue facilities, and particularly relates to a water supply rescue and compressed air self-rescue combined device. Comprising a box body with an opening in the side face, and a water supply rescue device and a compressed air self-rescue device are arranged in the box body; a water supply self-rescue unit of the water supply rescue device and a compressed air self-rescue unit of the compressed air self-rescue device are distributed in a row within the opening range of the box body; according to the water supply rescue and compressed air self-rescue combined device, a water supply rescue device and a compressed air self-rescue device which are originally independent are integrated in the same box body, and the problems that a traditional split device is dispersedly installed and inconvenient to operate, and personnel need to switch the position back and forth are thoroughly solved; the interfaces (the water supply branch pipes and the compressed air masks) of the two self-rescue units are distributed side by side in the opening range of the box body, so that a user can quickly and conveniently use the water supply and compressed air self-rescue functions simultaneously or alternately at the same position and facing the same operation surface, and the cooperative operation efficiency in an emergency is greatly improved.

The invention discloses a quick-start compressed air energy storage system based on residual wind power absorption and a control method thereof. The system comprises a power divider, a lithium battery, a main compressor unit, at least one peak shaving compressor, a plurality of compression working medium flow valves, a plurality of air compressor interstage coolers, an air storage tank, a pressure regulating valve, a vortex tube, a distribution valve, a heat storage tank, a plurality of heat tank heat source supply flow valves, a cycle working medium flow valve, a turbine air inlet precooler, a turbine generator unit and an adsorption tower. An ORC power generation system and a power supply control and black start module; wherein the power supply control and black start module is used for executing corresponding control strategies according to various power grid operation data and wind power. The system can adaptively start the peak regulation compressor to absorb excess electric energy, and combines a hybrid frequency modulation architecture and a black start protocol, so that the system response speed, the energy storage density, the energy comprehensive utilization efficiency and the power grid supporting capability are remarkably improved, and efficient consumption and rapid peak regulation of wind power fluctuation are realized.

The utility model relates to the field of metal welding piece detection, and discloses a steel structure welding quality compression resistance detection mechanism which comprises a bottom plate, a mounting structure is fixedly connected to the middle of the upper end face of the bottom plate, a driving structure is fixedly connected to the middle of an inner cavity of the mounting structure, and clamping structures are symmetrically connected to the inner cavity of the mounting structure in a sliding mode. The left side of the upper end face of the bottom plate is fixedly connected with a containing structure, a lifting structure is arranged in the middle of the upper end face of the containing structure, the sliding block moves to make the clamping plate and the fixing structure slide relatively, and the steel structure makes contact with the fixing column. When interaction force is generated between the fixing column and the steel structure, the fixing column can slide towards an inner cavity of the sliding groove, the fixing spring contracts, so that the steel structures of different shapes are clamped and fixed, meanwhile, through the telescopic characteristic of the spring, it can be guaranteed that stable clamping force can be provided on the surfaces of the steel structures of different shapes, and the clamping effect is good. And the steel structure is prevented from displacement in the subsequent detection process, so that the accuracy of the detection result is ensured.

This utility model discloses a pressure-controllable cupping device, relating to the field of cupping technology. The device includes a cupping jar, with a safety tube fixedly connected to one side. A positioning ring is fixedly connected to one end of the safety tube, and a fixing bracket is fixedly connected to the inner circumference of the safety tube. A threaded rod is movably connected to one side of the fixing bracket, and a sealing gasket that cooperates with the positioning ring is fixedly connected to the circumference of the threaded rod. A sliding plate is slidably connected to the inner circumference of the safety tube, and the threaded rod threadedly passes through the sliding plate. In this utility model, when the pressure inside the cupping jar is too high, air can enter the jar through the safety tube, maintaining stable pressure and improving safety. Simultaneously, rotating the threaded rod changes the pressure of the second spring, thereby adjusting the pressure inside the jar. This makes it convenient to use. Furthermore, moving the threaded rod moves the sealing gasket, allowing air to quickly enter the jar, facilitating quick and safe removal of the jar.

The utility model discloses a kind of formic acid hydrogen production carbon dioxide recovery purification systems, its technical scheme main points include sequentially connected: formic acid hydrogen production unit, for by formic acid raw material preparation hydrogen-rich gas;Carbon dioxide separation unit, for separating crude carbon dioxide in hydrogen-rich gas, purifying hydrogen;Carbon dioxide collection unit, for collecting crude carbon dioxide and pressurization;Carbon dioxide purification unit, for filtering impurity in crude carbon dioxide, purifying carbon dioxide;Carbon dioxide storage unit, for storing after carbon dioxide of depositing;The utility model innovation fusion carbon dioxide recycling, realize the clean production process of high formic acid conversion rate, carbon dioxide purity, hydrogen purity, applicable to distributed energy and chemical carbon resource scene.

The utility model discloses a kind of off-highway dump truck auxiliary braking systems, belong to off-highway dump truck braking technical field, including the hydraulic clamp disc type auxiliary brake of being installed in middle axle and rear axle transmission shaft, and the hydraulic control unit consisting of hydraulic power unit, auxiliary brake valve, energy accumulator and connecting pipeline;Hydraulic power unit connects steering hydraulic oil tank and auxiliary brake valve, and energy accumulator supplies high-pressure oil to auxiliary brake valve to auxiliary brake to release brake.The system is mainly used to improve off-highway dump truck parking brake safety and braking force, applicable to the vehicle of design load 90 tons below, provide redundancy brake guarantee for off-highway dump truck, realize quick response auxiliary brake when main brake fails.

The utility model discloses a coal gas pressure stabilizing control device for a blast furnace coal injection and pulverizing system. A waste gas pipeline is provided with a waste gas fan, a waste gas electric regulating valve, a waste gas flowmeter and a waste gas pressure transmitter; a coal mill inlet temperature thermal resistor and a coal mill inlet pressure transmitter are arranged on the outlet pipeline; a coal gas pressure transmitter, a coal gas flowmeter and a coal gas electric control valve are arranged on the coal gas pipeline, and an outlet temperature thermocouple and an outlet pressure transmitter are further arranged on the outlet pipeline; a waste gas carbon monoxide detector and a waste gas oxygen content detector are arranged on the waste gas pipeline; and a gas pneumatic quick switching valve, a gas electric blind plate valve, a gas electric butterfly valve and a carbon monoxide heat conduction type gas analyzer are arranged on the gas pipeline, and the number of the gas electric control valves is larger than or equal to two. According to the utility model, the gas regulating valve or the bypass pipeline three-valve group is additionally arranged, so that a monitoring instrument is perfected, and the gas flow and pressure are accurately controlled.

The utility model discloses a two-way throttling solenoid valve with adjustable flow, which comprises a solenoid valve body, the solenoid valve body comprises a valve body, a valve sleeve, an iron core, a valve core and an adjusting mechanism, the valve sleeve, the iron core and the valve core are positioned in the valve body, and the adjusting mechanism is used for rotating a pull rod to drive the iron core to move up and down. Meanwhile, the iron core clamping groove ensures that the pull rod is stably connected with the iron core, so that the adjusting action is accurately transmitted; a gap groove in the valve element is matched with the adjusting mechanism, flow adjustment is further refined, and the flexibility and accuracy of adjustment are enhanced; the gap alpha between the valve sleeve and the iron core defines the flow adjusting range, an operator can conveniently and finely control the rotation amplitude of the pull rod in a labor-saving mode through the hand wheel, and stable rotation of the pull rod and stable movement of the iron core during adjustment are guaranteed through cooperation of the rod sleeve on the outer wall of the pull rod and the valve body wedging groove.

The utility model discloses a quick tapping tool with a gradual change section chip removal combined structure, and relates to the technical field of tapping tools. The rapid tapping tool with the gradual change amount section chip removal combined structure comprises a limiting frame, a tapping mechanism is arranged above the limiting frame, a limiting assembly comprises a movable frame movably installed below the limiting frame, a connecting rod is movably installed below the movable frame, a limiting rod is movably installed at the bottom end of the connecting rod, and a tapping mechanism is arranged above the limiting frame. A transmission ring is movably installed below the limiting rod, a pressure bearing separates rotation of the screw tap from static monitoring of a pressure sensor, the screw tap can rotate freely, axial pressure can be effectively transmitted to the sensor, the situation that rotation interferes with pressure monitoring is avoided, meanwhile, the linear bearing limits the screw tap to move only in the axial direction, pressure abnormity caused by deviation is avoided, and the service life of the screw tap is prolonged. The grip is matched with the ratchet and the ratchet wheel, so that rotation action and pressure application are separated, the influence of manual force application fluctuation is structurally eradicated, and pressure stability and controllability are achieved through cooperation of multiple components.

The utility model relates to pressure reducing valve technical field especially relates to a high pressure difference two stage pressure reducing valve. It includes lower valve body, middle valve body and upper valve body, and the lower valve body is connected with the middle valve body through the bottom bolt of being set to its bottom, and the upper valve body is connected with the middle valve body through the top bolt of being set to its top, is equipped with the air inlet hole of being linked with lower valve body air inlet channel on the lateral wall of lower valve body, is equipped with the air outlet hole of being linked with middle valve body gas guide channel on the lateral wall of middle valve body, is equipped with a first pressure reducing mechanism between lower valve body and middle valve body, is equipped with two stage pressure reducing mechanism between middle valve body and upper valve body, and two stage pressure reducing mechanism and first pressure reducing mechanism linkage cooperation. It structure design is reasonable, and the operation is convenient, and through two stage pressure reduction, can effectively solve the export end pressure not stable, the big difficulty of regulating under the high pressure situation of inlet end and the use range limited caused by the difficulty of handling high pressure difference pressure caused by the big pressure fluctuation range of inlet end, solves the problem existing in practical use.

The utility model discloses a welding tooling applied to dissimilar materials relates to welding technical field, including the carrier plate for bearing copper material and aluminum material, and the carrier plate is provided with the fixture for fixing copper material and aluminum material two position, the welding tooling still includes the water tank of can accommodate carrier plate and make the cooling liquid can immerse the welding area between copper material and aluminum material, and the spray assembly of the fixed or movable mode to the welding area spray cooling liquid is selected. The utility model discloses through setting up the carrier plate of bearing copper material and aluminum material and fixed clamp, can ensure two kinds of to be welded material to keep stable relative position in the welding process, avoid because of the misplacement of welding thermal stress or mechanical disturbance, and the water tank of can accommodate carrier plate and make the cooling liquid immerse the welding area is integrated simultaneously, and the spray assembly of optional fixed or movable mode, make the tooling have the double function of whole immersion cooling and spray cooling.

The utility model relates to the technical field of pressing force testing, and discloses a pressing force adjusting device which is characterized in that a fixing plate is provided with a stepped hole; the screw rod is in threaded connection with the first threaded hole of the stepped hole; the exterior of the sleeve is connected to a second hole of the stepped hole; one end of the pressing column is in pressure abutting contact with the to-be-pressed part, and the other end slides in the sleeve; the elastic piece is arranged in the sleeve and located between the screw rod and the other end of the pressing column. The pressing force adjusting device is suitable for compressing the elastic piece by screwing a screw rod with scales, and then pushing force is applied to the pressing column through the elastic piece, so that the pressing column is used for pressing the part to be pressed. And the scales correspond to the pressing force of the pressing column on the to-be-pressed part. According to the device, the screw rod is screwed, the relation between the scales and the applied pressing force is utilized, the pressing degree of the to-be-pressed part is accurately adjusted, the requirement for the skill level of an operator is remarkably lowered, and ordinary personnel without related skills can accurately adjust the pressing force on the part.

The utility model discloses a machine tool cutter assembly, which relates to the technical field of numerical control machine tools and comprises a base and a turning tool structure. The base comprises a straight plate part and an upper convex part, a sliding groove is formed in the upper surface of the straight plate part, an abutting part is arranged at the end, away from the upper convex part, of the sliding groove, and a V-shaped groove is formed between the side wall of the abutting part and the side wall of the sliding groove; the turning tool structure comprises a blade, a tool apron plate, a sliding block and a first linear driver. An inserting tip is arranged at the end part of the sliding block; and the inserting tip can be adaptively inserted and propped against the V-shaped groove. The first linear driver can push the tool apron plate to transversely move on the base in a reciprocating mode, and therefore the two blades arranged oppositely are driven to independently stretch out and retract. In the turning process, the state that one blade stretches out and the other blade retracts is kept, the problem that in the prior art, a boss-shaped structure collides with a blade in a non-working state can be solved, and the turning blade has better compatibility.

The utility model relates to a traditional Chinese medicine dressing low-pressure permeation device for orthopedics department staged treatment, which belongs to the technical field of orthopedics department treatment and comprises a shell, the interior of the shell is hollow, and a flexible fixing film for fixing traditional Chinese medicine dressing is arranged on one side, close to the skin, of the shell. The shell is further provided with a pressure suction assembly used for extracting air in the shell. The application has the effect of reducing the influence of short application time, low frequency and improper use method on the effect of the traditional Chinese medicine dressing.

This invention discloses a fully automatic linear control busbar bonding structure and method. The structure includes: a bonding pressure roller, a take-up roll, and a release roll mounted on a substrate; multiple reversing rollers on the substrate for adjusting the direction of the material roll / strip; a release roll for holding the material roll / strip; one end of the material roll / strip connecting to the take-up roll after passing through the multiple reversing rollers and the bonding pressure roller; the bonding pressure roller for pressing the material roll / strip closer to the electronic board; and a control module connected to a tension adjustment mechanism, a take-up motor, and a release motor, capable of adjusting the speeds of the take-up motor and the release motor. This fully automatic linear control busbar bonding structure utilizes the independent rotation of the take-up roll and the release roll to uniformly wind the material roll / strip onto the take-up roll. During the conveying process, the angle and position of the material roll / strip are adjusted by the multiple reversing rollers, facilitating the bonding pressure roller to bond the material roll / strip to the electronic board, ensuring high efficiency and high quality in busbar installation on the electronic board.

The invention relates to the technical field of waste heat recovery, in particular to a system and method for recovering compression heat of an air compressor for preheating boiler feed water. The system comprises an air compressor waste heat recovery subsystem and a boiler feed water preheating subsystem. The air compressor waste heat recovery subsystem comprises a multi-stage centrifugal air compressor, a first-stage compressor, a second-stage compressor and a third-stage compressor are sequentially integrated in the multi-stage centrifugal air compressor, and an outlet of the first-stage compressor and an outlet of the second-stage compressor are connected to the hot side of the efficient heat exchanger through pipelines. The cold side of the efficient heat exchanger, the circulating water pump and the surge tank form a closed circulating water loop through pipelines; the make-up pump is connected to the closed circulating water loop; the boiler feed water preheating subsystem comprises a desalting water tank, a deoxidizing feed pump, a water-water heat exchanger, a deaerator and a boiler which are sequentially connected through pipelines, and the water-water heat exchanger is connected into a circulating water pipeline of the air compressor waste heat recovery subsystem. Compression heat of the centrifugal air compressor is recycled and used for preheating boiler feed water. The waste heat utilization rate is improved.

The application discloses a kind of concrete prefabricated component performance detection device, belong to concrete component test device field, including console, liquid supply mechanism, several detection mechanisms and oil jack, liquid supply mechanism and detection mechanism are respectively connected with console communication, several oil jacks are all set with a detection mechanism.The utility model replaces traditional mechanical jack with oil jack, and the stable delivery of oil can be realized by liquid supply mechanism and combined with the closed-loop control function of console, which not only ensures the uniform loading speed, meets the uniform speed loading required by specification, but also can ensure the stability of pressure in the holding phase;Through the cooperation of detection mechanism, liquid supply mechanism and console, accurate control of each oil jack can be realized, without repeated adjustment by staff, not only reduce the complexity of test and labor and time cost, but also ensure the uniformity of load distribution, guarantee the reliability and accuracy of test data.

This invention provides a dual-stator self-regulating electromagnetic pump for high-temperature conductive media, comprising a first pipe and a second pipe, the second pipe being coaxially disposed inside the first pipe, forming an annular cavity between the first pipe and the second pipe for the flow of the high-temperature conductive media; an outer stator assembly is disposed outside the first pipe, the outer stator assembly being configured to generate a traveling wave magnetic field, the traveling wave magnetic field being used to act on the high-temperature conductive media within the annular cavity and generate a Lorentz force to drive the high-temperature conductive media to flow along the annular cavity; at least one set of regulating stators is disposed axially inside the second pipe, the regulating stators being used to generate a compensating magnetic field acting on the high-temperature conductive media within the annular cavity to increase the Lorentz force on the high-temperature conductive media.

The utility model relates to the technical field of food processing equipment, in particular to fruit slice vacuum low-temperature concentration equipment which comprises an evaporation cavity shell, a vacuum steam exhaust pipe is fixedly mounted at the top of the evaporation cavity shell, and a concentrated pulp liquid discharge pipe is fixedly mounted at the bottom of the evaporation cavity shell. A low-temperature concentration assembly is arranged on one side of the evaporation cavity shell; through the arrangement of the first liquid inlet pipe, the booster pump and the second liquid inlet pipe, primary pulp can be stably conveyed to the heating cavity from the primary pulp tank, the booster pump can increase the liquid inlet pressure, it is ensured that primary pulp is supplied smoothly and efficiently, and stable raw material input is provided for the subsequent concentration process; the heating cavity is formed by a plurality of independent cuboid containers in a circumferential array mode and communicated through the circulating pipe, the structure can enable fruit slice raw pulp to be evenly heated in the heating cavity, heat exchange efficiency is improved, consistency of the concentration effect is guaranteed, meanwhile, the raw pulp can circulate among the containers through the circulating pipe, and local overheating or uneven concentration is avoided.