31 results about "Tube Spacer" patented technology

The invention discloses an intermittent shellfish releasing ship, which aims to provide an intermittent shellfish releasing ship which not only has low labor intensity, but also has good releasing uniformity and can improve the survival rate of shellfish fry. It includes a counterweight, a column arranged on the hull, an elevating platform that can be lifted along the column, an intermittent self-discharging device that is arranged on the elevating platform and located below the elevating platform, and a deck that is arranged on the hull and runs through the hull. The vertical isolation sleeve of the bottom plate, the vertical isolation sleeve is located below the lifting platform, and the intermittent self-discharging device can pass through the vertical isolation sleeve and is located below the hull; the intermittent self-discharging device includes a fixed isolation cylinder with a horizontal axis, The dynamic discharge cylinder and the first driving impeller arranged on the rotation shaft can be rotated through the rotating shaft. The shaft coincides with the axis of the fixed isolation cylinder. The lower part of the outer surface of the fixed isolation cylinder is provided with a fixed discharge port. A dynamic discharge port is arranged on the outer surface of the dynamic discharge cylinder.

Coil assemblies for use in heat exchange applications are made using polymeric tubes, some with heat exchange and water redistribution media integral with the coil assembly and others with a water distribution subassembly integral with the coil assembly. One coil assembly includes at least two generally linear passes that are connected by return bends formed by folding an array of polymeric tubes. The passes have an array of at least two layers of polymeric tubes that pass through alignment holes in tube spacers only along the passes to maintain the tubes in substantially the same relative positional relationship to each other in the passes and in the return bends. Methods are explained for forming the coil assemblies and components, including the tube spacers and tube sheets to connect the coil assembly to inlet and outlet manifolds for the processing fluid flowing internally through the tubes.

The present invention relates to an output overvoltage protection circuit, which includes a voltage detection module and a hysteresis comparator, wherein the voltage detection module includes: a first resistor, a second resistor, The high-voltage isolation tube and the third resistor also include a coupling capacitor connected in parallel to both ends of the second resistor; the output overvoltage protection circuit also includes a sample-and-hold connected between the voltage detection module and the hysteresis comparator module. In the present invention, the parasitic capacitance of the first resistor to the switch node offsets the parasitic capacitance of the second resistor to the ground, and at the same time, increases the coupling capacitance to offset the parasitic capacitance of the source and drain of the high-voltage isolation tube to the ground, so that the detection voltage follows the The voltage of the switch node realizes the purpose of rapidly detecting the voltage of the switch node of the boost chip.

A polymer or other substrate optimized for growing cells is described, which takes the form of a micro-thin bag with gas permeable sides. Sides of the bag can be held at a fixed distance from one another with a multitude of tiny micropillars or other spacers extending between them, keeping the bag at a predetermined thickness and preventing the bag from collapsing and the sides from sticking together. In other embodiments, the sides may be held apart by gas pressure alone. A 0.01 μm to 1000 μm parylene or other biocompatible coating over the bag outsides controls the permeability of the bag material and provides a bio-safe area for cell growth. An alternate configuration uses open-cell foam with skins coated with a biocompatible coating. Tubes going into multiple bags can be connected to a manifold that delivers gaseous oxygen or removes carbon dioxide and other waste gases. Multiple bags can be stacked together tightly, with o-ring spacers in between, and housed within a vessel to form a high-surface area, ultra-compact cell growing system. For cells growing on the bags, liquid nutrients can be fed by way of the tube spacers, and oxygen and waste gases permeated through the bag sides and transported within the bags.

The present disclosure relates to an electrical bushing (1) comprising an electrically insulating sleeve (2) having a central longitudinal through hole (4) surrounding a central longitudinal axis (5) of the bushing and a central longitudinal bore positioned through the sleeve. The electrical conductor (3) through the hole (4). The conductor comprises a longitudinal outer tube and a longitudinal inner tube (3b) located concentrically within the outer tube (3a) such that a tubular space is formed between the outer tube and the inner tube. A first end of the tubular space is delimited by a tube spacer (10) between the outer tube and the inner tube, and the second end of the tubular space is capped to form a closed tubular space. The closed tubular space contains a heat transfer fluid thereby forming a heat pipe (6) between the outer and inner tubes of conductors. The outer tube extends longitudinally beyond the heat pipe bounded by the tube spacer at a first end of the tubular space, and the inner tube has at said first end a fluid passable from between the outer tube and the inner tube into the inner tube. In the central longitudinal space (9) in the design without passing longitudinally beyond the extension of the outer tube.

The invention discloses an oil quantity compensation type transformer, which belongs to the technical field of power supply equipment, and comprises a transformer box body, the transformer box body has an oil chamber for containing transformer oil, a compensation oil tank is arranged on the top of the transformer box body, and the sampling port is fixedly installed There is a fixed pipe, the fixed pipe runs through the oil chamber of the transformer box and the end is fixed on the transformer box, an oil inlet gap is arranged on the fixed pipe located in the oil chamber, and the extension direction of the oil inlet gap is consistent with the extension direction of the fixed pipe , an isolation tube is installed in the oil inlet pipe, and an oil passage groove corresponding to the oil inlet gap is arranged on the isolation tube. A sampling tube is inserted in the isolation tube. corresponding exposure. The invention can collect oil samples at multiple positions at the bottom of the transformer, improves the accuracy of oil sample collection, and avoids transformer oil loss in the oil cavity caused by oil sample collection, and is widely used in power supply systems.

The invention discloses an infusion tube transmission mechanism, which includes a charging mechanism and a material storage mechanism docked with it, wherein the charging mechanism is used to realize the feeding and transmission of the infusion tube, and the material storage mechanism is used to transfer the material from the charging mechanism The infusion tubes are spaced so that the infusion tubes are arranged according to a predetermined distance, and the infusion tube transmission mechanism also includes a loading mechanism limit device arranged at the bottom of the charging mechanism for supporting the charging mechanism. The infusion tube transmission mechanism realized according to the present invention adopts a spacer mechanism to carry out interval processing operations on the automatic transport infusion tubes, etc., which solves the problem of easy entanglement between tubes and makes subsequent packaging operations more convenient; adopts clever design The docking method of the interval mechanism and the charging trolley makes the process of infusion tube transmission smoother; the design of the loading trolley adopts the setting method of the limit mechanism, which avoids the friction of the casters and improves the service life of the charging mechanism.

The invention discloses a special-shaped tube bundle heat exchanger with continuous spiral baffle double-shell side combination. The head at one end is provided with a tube pass inlet and a tube pass outlet, and one of the tube bundles and one of the tube bundles are also arranged between the tube sheets. Two; one of the tube bundles is composed of one of a plurality of heat transfer tubes, arranged between the central tube and the shell; the second tube bundle is composed of two of a plurality of heat transfer tubes, arranged in the central tube; one of the heat transfer tubes is a non- Special-shaped tubes with smooth walls, the second of the heat transfer tubes is a spiral flat tube; one of the fixed-distance tubes and the tube bundle passes through the spiral baffle, and its two ends are respectively connected with the tube sheet, and the spiral baffle is fixed by the fixed-distance tube; the tube bundle The two ends of the second are also respectively connected with the tube sheet; there are two notches corresponding to the shell-side inlet and the shell-side outlet of the heat exchanger respectively on the central tube. The heat exchanger of the present invention adopts two tube bundles with different heat transfer tube structures, less fluid back-mixing, no flow dead zone, little influence of bypass flow and leakage flow, and can make full use of the diameter of the shell to arrange heat transfer tubes. High thermal coefficient.

The invention discloses a microwave resonant cavity capable of removing water film for steam humidity measurement, which comprises a steam flow inlet pipe, a resonant cavity pipe and a frequency adjustment pipe which are threadedly connected from front to back, the steam flow inlet pipe, the resonant cavity A ring-shaped droplet collection chamber is provided between the tube and the sealing gasket. The resonant cavity tube is provided with a droplet outlet that communicates with the droplet collection chamber. The airflow inlet tube is provided with an axial hole that communicates with the droplet collection chamber. , the axial hole communicates with the pipe hole of the steam flow inlet pipe through the radial hole set on the steam flow inlet pipe; The rear isolation tube, the part between the front isolation tube and the rear isolation tube in the resonant cavity tube hole constitutes the measurement chamber, the resonant cavity tube is provided with a coupling installation hole, and the end of the coupling installation hole is connected to the measurement chamber; The invention is a microwave resonant cavity capable of automatically removing water film deposits on the inner wall of the cavity, which has strong pipe environment adaptability and low cost.

A shell and tube heat exchanger comprises a cylinder (3) with a shell side fluid inlet (7) and a shell side fluid outlet (12) thereon and a tube box (1) with a tube side fluid inlet (13) and a tube side fluid outlet (8) thereon. The cylinder (3) is connected to the tube box (1) through fixed tube sheets (2) at two ends of the cylinder (3). Heat exchange tube bundle (6) and baffle plates (4) perpendicular to the axis of the tubes are arranged in the cylinder (3). The baffle plates (4) are fixed in parallel along the axis and uniformly distributed by a draw rod (11) and a tube spacer (10). The draw rod (11) is fixed on the tube sheets (2). Two kinds of circular tube holes, in which one is large and another is small, are arranged on the baffle plate (4) according to the conventional technique. The arrangements of large and small circular tube holes on the adjacent baffle plates (4) are different from each other. The tube bundle (6) passes through the tube holes of a group of baffle plates (4) and is fixed between the tube sheets (5) in parallel with the axis. The baffle plate (4) can be applied in a floating head and a U-shaped tube heat exchanger. The shell and tube heat exchanger has the advantages of reducing the pressure fall and the dead area of heat transfer, increasing the heat transfer efficiency and alleviating the vibration and abrasion of the tube.

The invention proposes a device (10) for on-site installation and extraction of articulation shafts of links (14, 16) of large-sized chains having an alternating arrangement of outer links (14) and inner links (16) , each inner link (16) has two parallel side plates (20, 22) perforated at the ends (24, 26), and the two side plates pass through a tubular spacer (28) at the end (24 , 26) are joined together, and the two side plates are connected at the ends (24, 26) of the parallel side plates (20, 22) of the inner link (16) through the relevant hinge shaft (12) is hinged on the perforated ends (30, 32) of the parallel side plates (34, 36) of two successive outer chain links (14), the device (10) has at least one actuator (44) , the actuator is used to selectively actuate the end of a hinge shaft (12) or a side plate (34, 36) of an outer chain link (14) to insert or remove the hinge shaft, which It is characterized in that the apparatus comprises: a pair of portable actuator supports (46), which support two actuators (44) which move synchronously and pivotally; and a common actuator (44) Control device (48).