654 results about "Single tube" patented technology

The utility model relates to the technical field of pipe cutting devices, in particular to an automatic cutting device for a three-way pipe fitting. According to the technical scheme, the device comprises a base, a sliding table is slidably mounted at the top of the base, a single-pipe-head clamping plate is fixedly mounted at the top end of the sliding table, a protective baffle is fixedly mounted on the side, away from the sliding table, of the top of the base, a transverse moving frame plate is slidably mounted at the top end of the sliding table, and a first rubber column head is clamped and inserted into the transverse moving frame plate; a double-pipe-head clamping assembly is fixedly installed at the top end of the base, two clamping plates are arranged on the double-pipe-head clamping assembly, and second rubber column heads are fixedly installed on the inner side walls of the clamping plates. By means of the single-pipe-head clamping plate and the double-pipe-head clamping assembly, any port of the three-way pipe can be clamped and fixed, the pipe positioning difficulty is reduced, the rubber column heads support the inner walls of the pipe heads, the deformation probability during pipe cutting can be reduced, cutting is convenient, and the production efficiency is effectively improved.

The utility model discloses a soil vibration screening instrument, which belongs to the technical field of soil screening, and a vibration screening box comprises a vibration adjusting frame and a multi-layered spiral screening assembly, the vibration adjusting frame comprises a vibration tray, a screw rod, a central column and a fixing ring; the multi-layer spiral screening assembly comprises a single-pipe spiral flow guide channel and a multi-layer spiral screening ring which are communicated from top to bottom, the single-pipe spiral flow guide channel is arranged in the annular space and fixedly connected to the top of the center column, and the multi-layer spiral screening ring is connected to the center column in a penetrating and sleeving mode and connected to the screw. According to the screening instrument, screening parameters can be adjusted in real time, so that the screening precision and the screening efficiency are improved, and the cost consumption is reduced.

The invention provides a pipeline route design method based on a single-pipe mathematical model. The method comprises the following steps that a three-dimensional vertical section and a UCS coordinate system are determined according to a live-action three-dimensional model of a pipeline laying target area; establishing a single-tube mathematical model according to the three-dimensional longitudinal section and a UCS coordinate system; according to the single-pipe mathematical model, micro-piping laying is carried out on the pipeline; in the process of laying the micro-piping on the pipeline, calculating a direction similarity index according to the similarity between the pipeline shape and the pipe ditch shape; calculating a stress accumulation index according to the elastic modulus and the inertia moment; and constructing a total cost calculation model based on pipeline laying, and performing cost optimization based on the direction similarity index and the stress accumulation index so as to optimize the pipeline laying micro-piping. The method has the technical effects that the laying design precision and efficiency are remarkably improved, the cost is reduced, and the safety of the system can be enhanced.

The utility model discloses a parallel detachable concentric tube robot for minimally invasive surgery. The parallel detachable concentric tube robot comprises an abdominal sheathing canal, a plurality of single-arm driving systems and flexible instrument arms, the multiple single-arm driving systems are connected in parallel, the single-arm driving systems are connected with the flexible instrument arms, the multiple flexible instrument arms are arranged in instrument arm channels formed in the abdomen entering sheathing canal respectively, and each flexible instrument arm comprises a plurality of concentric tubes; the single-arm driving system comprises a single-tube driving module, a guiding device and a concentric tube are arranged in the single-tube driving module, a driving mechanism, a linear transmission mechanism and a rotary transmission mechanism are arranged in the guiding device, the linear transmission mechanism and the rotary transmission mechanism are both connected with a driver in the driving mechanism, and the linear transmission mechanism is connected with the rotary transmission mechanism. The concentric pipe is installed on the rotary transmission mechanism, and the anti-collision device is arranged on the rotary transmission mechanism. The parallel type design is adopted, each guide device independently controls the corresponding concentric tube, and surgical instruments are convenient to replace.

The invention discloses a multi-stage self-triggering type liquid carbon dioxide grading fracturing method. The method comprises the following steps that early-stage preparation work is conducted on a multi-stage self-triggering type fracturing pipe; liquid carbon dioxide is filled into the multi-stage self-triggering type fracturing pipe; the multi-stage self-triggering type fracturing pipe is placed in a drill hole in the target fracturing position and then connected with an exploder; the exploder is started, and the multi-stage self-triggering type fracturing pipes conduct multi-stage fracturing in sequence; and after fracturing is completed, the multi-stage self-triggering type fracturing pipe is recycled for reuse. The grading self-triggering fracturing device is constructed on the basis of the gas transfer rule and the memory alloy material, the liquid carbon dioxide single-point excitation and multi-stage self-triggering grading fracturing method is provided, and the problems that power of a liquid carbon dioxide fracturing single pipe is insufficient, and wiring of multiple pipes is complex are solved.

The invention discloses a comprehensive evaluation method and device for toughness of a water supply pipe network system and a computer medium. Firstly, hydraulic model parameters of a water supply pipe network are obtained; then, a low-stress scene, a medium-stress scene and a high-stress scene are constructed, the low-stress scene is constructed according to historical water demand data, the medium-stress scene is constructed by superimposing pipeline failure on the basis of the low-stress scene, and the high-stress scene is constructed by superimposing fire working conditions on the basis of the medium-stress scene; according to the hydraulic model parameters of the water supply pipe network, the water supply amount and the water demand amount of the water supply pipe network in a low-stress scene, a medium-stress scene and a high-stress scene are calculated respectively; and finally, according to the water supply amount and the water demand amount of the water supply pipe network in the low-stress scene, the medium-stress scene and the high-stress scene, calculating a plurality of strain indexes for quantifying the toughness of the water supply pipe network system. According to the method, the system toughness of the water supply pipe network is evaluated at low calculation cost through scene simulation of only traversing the single pipe failure and superposing the single-point fire working condition on the basis of the single pipe failure.

The invention discloses an energy-saving generator set axial flow channel composite cooling device, which relates to the technical field of cooling devices, and comprises an air cooling mechanism, a plurality of heat dissipation mechanisms, a plurality of control mechanisms, a plurality of connecting pipes, a liquid inlet and a liquid outlet. According to the device, temperature changes are sensed in real time through the memory metal sheet, a three-stage heat dissipation adjusting mechanism is automatically triggered, the heat dissipation requirements of the generator set under low, medium and high working conditions are accurately matched, basic heat dissipation is achieved through single-tube operation at the low temperature, three-tube enhanced heat dissipation is started at the medium temperature, and five-tube full-open maximum power heat dissipation is achieved at the high temperature; a linked cooling liquid flow three-stage adjusting system is matched, so that the heat dissipation efficiency and the temperature change are synchronized in real time, energy waste caused by traditional continuous full-power heat dissipation is reduced, the problem of fatigue cracks of metal parts caused by long-term thermal stress is effectively reduced, the service life of the device is prolonged, and the service life of the device is prolonged. The dilemma problems of supercooling waste and overheating damage of a traditional heat dissipation system are fundamentally solved.

The invention relates to the technical field of wire feeding of welding equipment, in particular to a chain type wire feeding hose which comprises a plurality of pipe joints connected in sequence, the pipe joints are provided with through holes, at least one rolling wheel is arranged on the pipe joints in the peripheral direction, one end of each pipe joint is provided with a protruding part, and the other end of each pipe joint is provided with a groove part. The protruding part of one pipe joint is in butt joint with the groove part of the adjacent pipe joint and is hinged to the groove part through a pin shaft. The layout of the rolling wheels on the pipe joints is optimized, so that the length of the single pipe joint can be extremely short, and the manufactured whole hose is extremely good in flexibility and can be bent into a very small curvature radius. The pipe joints which are connected end to end are connected through the pin shafts, enough connecting strength is achieved, the large rotational freedom degree is achieved, and the pipe joints can be used in a self-contained mode under the condition that an outer sleeve is not used. And the structure without using the outer sleeve is open, so that impurities or dust falling from the surface of the welding wire can easily and automatically fall out and is not easy to accumulate inside, and the cleaning and maintenance are convenient. And due to the open structure, the product assembly work can be automated.

The invention belongs to the field of artillery charging design, and particularly relates to a high-density polypropylene module charging packaging barrel which comprises a barrel body (1), a barrel cover (2), an air pressure balance valve (3) and a sealing piece (4). The sizes of cavities in the barrel body (1) and the barrel cover (2) are determined according to the boundary dimension of module charging, the structural design of the packaging barrel is carried out according to the charging weight and use requirements, and structural optimization and improvement are carried out by combining simulation analysis software with a single verification test. Compared with the prior art, the packaging barrel made of the high-density polypropylene material has the advantages that compared with an original metal packaging barrel and an original plastic packaging barrel, the weight of a single barrel is greatly reduced, and the packaging barrel is convenient to carry; the material is soft in texture, can effectively buffer the impact force between the charge and the packaging barrel in the charge transportation process, reduces the charge transportation damage, and ensures the charge ballistic performance; the material is low in cost and easy to foam and form, and the production cost can be reduced.

The invention relates to a single pipe-lattice hybrid wind power generation tower transfer node and a construction method thereof.The single pipe-lattice hybrid wind power generation tower transfer node comprises a lattice tower section and a single pipe tower drum which are connected through an L-shaped transition section, and the L-shaped transition section comprises a single pipe tower drum connecting piece and a plurality of L-shaped transfer connecting pieces; the L-shaped conversion connecting pieces are evenly distributed on the outer wall of the single-pipe tower barrel connecting piece in the circumferential direction, each L-shaped conversion connecting piece comprises a uniform-section box beam, a variable-section box beam and a steel pipe which are connected in sequence, and each variable-section box beam is of an arch pressing structure. Compared with the prior art, transition between the lattice type tower section and the single-pipe tower section is achieved through the L-shaped transition section, the transportation difficulty is lowered, the field welding workload is reduced, stress concentration is avoided, and smooth transition of rigidity and strength is achieved. The joint is simple in structure, clear in force transmission, convenient and fast to construct and suitable for the conversion requirement of the high-altitude and high-power single tube-lattice hybrid wind power generation steel tower.

The utility model provides an IGBT (Insulated Gate Bipolar Translator) vehicle single-tube power module for optimizing heat dissipation of a chip, which relates to the technical field of power modules and comprises an insulating heat dissipation substrate, a chip unit is arranged in the middle of the insulating heat dissipation substrate; the lead frame is connected with the insulation heat dissipation substrate, the lead frame is provided with a groove structure, and the groove structure is connected with the surface of the chip unit; the insulating heat dissipation substrate, the chip unit and the lead frame are packaged in the shell, and an outer metal layer of the insulating heat dissipation substrate is exposed out of the bottom of the shell. The packaging structure has the beneficial effects that the chip unit with higher heating is arranged in the middle of the insulating ceramic substrate, and double-sided welding is carried out on the chip by using a metal sinking groove structure, so that the packaging power density is improved, and the problem of heat dissipation caused by welding layering at the edge of the outer metal layer can be effectively solved.

The invention belongs to the technical field of power transmission tower welding, and particularly relates to a welding device for a power transmission tower and a method thereof.The welding device for the power transmission tower comprises a lifter, a mounting seat is fixedly mounted on a lifting mechanism of the lifter, and two sliding frames are slidably connected to one side of the mounting seat; c-shaped frames are fixedly connected to the ends, away from the mounting base, of the two sliding frames correspondingly, an annular welding assembly is arranged between the two C-shaped frames, a power transmission tower is arranged on the inner side of the annular welding assembly, the annular welding assembly comprises two upper half-ring rails and two lower half-ring rails, and annular sliding grooves are formed in the upper half-ring rails and the lower half-ring rails correspondingly; two semi-ring rotating gear rings are slidably connected into the annular sliding groove of the upper semi-ring track, two rotating semi-rings are slidably connected into the annular sliding groove of the lower semi-ring track, and the single-pipe power transmission tower welding device further comprises a positioning and pressing unit, a welding gun unit and two clamping and fixing units, and the problem that a single-pipe power transmission tower is inconvenient to weld in the outdoor installation process is solved.

The invention relates to the field of solid oxide fuel cells, and discloses an integrated catalytic combustion reformer and a reforming method. The reformer component comprises two porous partition plates fixedly arranged on the two sides of the inner shell respectively and a plurality of single-tube structures arranged in parallel, and the two ends of each single-tube structure are fixed to preformed holes of the two porous partition plates respectively; a combustion cavity is formed by gaps between all the single-tube structures and the inner shell, the interiors of the single-tube structures are coated with reforming catalysts, and the outer walls of the single-tube structures are evenly coated with combustion catalysts; the combustion cavity is used for combusting and reacting the mixed combustion gas under the action of a combustion catalyst and providing heat for all the single-tube structures; and the internal cavities of all the single-tube structures are used for absorbing heat by mixing the reformed gas and carrying out reforming reaction under the action of the reforming catalyst to obtain hydrogen-rich mixed gas. According to the catalytic combustion reformer and the reforming method, the technical problems that the energy utilization rate is low and the material cost is increased are solved.

A fluid controlled system for a cardiac assist device and its method of operation. The cardiac assist device has a cup assembly with a receptacle area. The cup assembly has at least one inflatable membrane that expands into the receptacle area. A single pressure tube connects the cup assembly to a fluid pump. A valve assembly is incorporated into the cardiac assist device. The valve assembly includes at least one valve that controls fluid flow between the inflatable membranes and the pressure tube and / or fluid flow between the receptacle area and the pressure tube. The valve assembly controls fluid flow to advance the cup assembly onto the heart, to maintain the cup assembly in an operable position, to operate the cup assembly, and to remove the cup assembly.

The invention discloses a method and a device for determining a gas reservoir water plugging and pore plugging radius boundary based on a capillary tube bundle, and the method is characterized in that the method comprises the following steps: collecting physical property data of a tight gas reservoir, and obtaining a capillary tube bundle pore diameter sample set; according to the capillary tube bundle pore diameter sample set, single-tube gas-water two-phase flow is calculated one by one; accumulating the single-tube gas-water two-phase flow to obtain the total flow of a capillary tube bundle under different water saturations, and obtaining a simulated water-gas ratio according to the total flow of the capillary tube bundle; according to the simulated water-gas ratio, obtaining a global optimal solution of the maximum permissible plugging pore radius; and obtaining a field recommendation scheme according to the global optimal solution of the maximum allowable plugging radius. According to the method, the critical plugging aperture under different reservoir conditions can be accurately identified, and the gas production capacity and the water control effect are effectively considered.

The utility model discloses a splicing member for a wind power iron tower, which comprises a first splicing shell and a second splicing shell which are symmetrically arranged, the first splicing shell is connected with the second splicing shell, the peripheral side of the first splicing shell is provided with a first connecting sleeve and a second connecting sleeve, and the peripheral side of the second splicing shell is provided with a second connecting sleeve. A third connecting sleeve and a fourth connecting sleeve are arranged on the peripheral side of the second splicing shell, and single pipe sections are detachably arranged on the upper side of the first splicing shell and the upper side of the second splicing shell. The splicing component can be connected with the tower column, the supporting performance is good, the single pipe section is detachably connected with the first splicing shell and the second splicing shell, mounting and dismounting are convenient, and meanwhile the first splicing shell and the second splicing shell play a role in supporting the single pipe section.

The application provides a double-motor spray cooling system, a power assembly and a vehicle, and relates to the technical field of vehicle parts. The double-motor spray cooling system comprises a liquid supply pipe, a first spray branch pipe, a second spray branch pipe and a liquid supply structure. An isolation wall is arranged in the liquid supply pipe, and the isolation wall divides the inner cavity of the liquid supply pipe into parallel first and second liquid supply flow channels. The liquid inlets of the first and second liquid supply flow channels are in communication with the liquid outlet of the liquid supply structure to obtain cooling liquid. The liquid outlet of the first liquid supply flow channel is in communication with the first spray branch pipe, and the first spray branch pipe is used for spraying and cooling the first motor. The liquid outlet of the second liquid supply flow channel is in communication with the second spray branch pipe, and the second spray branch pipe is used for spraying and cooling the second motor. Through integrated design of the single-pipe double-flow channel, the pipeline structure of the double-branch liquid supply is integrated into a single liquid supply pipe, thereby effectively simplifying the pipeline layout of the double-motor spray cooling system and reducing the installation space occupied by the pipeline.

The invention discloses a single-tube floating type fluid connector which is characterized in that a containing circular cavity, an opening and a circular hole are formed in a mounting seat; the adapter tube is arranged on the mounting seat in a penetrating manner, can axially displace, radially displace and rotationally displace in the accommodating circular cavity, and is provided with a mounting boss and a limiting piece; the floating seat is arranged on the adapter in a sleeving manner, an adjusting gap is reserved between the mounting boss and the floating seat, an elastic washer is arranged in the adjusting gap, an axial gap and a radial gap are reserved between the floating seat and the mounting seat, and a guide sleeve is arranged on the floating seat; the elastic connecting piece is positioned in the mounting seat and is respectively connected with the mounting seat and the floating seat; according to the single-pipe floating type fluid connector, the mounting base, the floating base and the adapter pipe are installed in a matched mode, two times of eccentricity compensation is carried out, and the fixed pipe and the adapter pipe are more convenient and smoother to joint.

The utility model belongs to the field of metering, and relates to a single-tube self-vibration type Coriolis flowmeter which comprises a shell, a measuring tube, a vibration swing arm and a measuring assembly. The measuring tube is arranged in the shell; the vibration swing arm is arranged on the measuring tube and synchronously vibrates along with the measuring tube; the measuring assembly is arranged in the shell and measures the amplitude of the vibration swing arm. The utility model provides the single-tube self-vibrating Coriolis flowmeter which is low in pipeline stress deformation and high in measurement precision.

The utility model belongs to the technical field of rock drilling cars, and particularly relates to a single-pipeline confluence dust collecting device which comprises a dust remover body, connecting blocks are symmetrically connected to the bottom surface of the dust remover body, and rock drilling car bodies are connected to the bottom surfaces of the connecting blocks. Through mutual cooperation of the connecting block, the positioning block, the two-way screw rod, the rotating handle, the moving block, the sliding block and the limiting insertion block, when an operator needs to detach the dust remover body for maintenance, the operator only needs to rotate the handle to drive the two-way screw rod to rotate, the moving block on the two-way screw rod can drive the sliding block to move, and then the dust remover body can be detached. At the moment, the sliding block drives the limiting inserting block to be sequentially separated into the inserting groove and the limiting groove, the positioning block can be separated out of the positioning groove, an operator can lift the dust remover body, and the dust remover body can be detached from the rock drilling vehicle body without a tool, so that the operation time is saved, and the working efficiency is improved. And convenience is brought to maintenance work of operators.

The application discloses a kind of communication tower inner flange carbon fiber reinforcing devices, it is related to flange reinforcing equipment technical field, including first fastener, second fastener, fastening plate, fastening band.In the application, the inner flange node of communication tower single-pipe tower is reinforced, which can improve the bearing capacity of the inner flange structure;The reinforcing device of the application is arranged at the inner flange node of the single-pipe tower, and the first fastener and the second fastener are arranged at the inner flange node, wherein the first fastener is fixedly arranged on the outer side of the circular pipe in the direction of the circular pipe to improve the bearing capacity of the circular pipe, and the second fastener binds the first fastener on the outer side to improve the bearing capacity of the circular pipe;The embodiment of the application can realize more efficient fixation of the inner flange node, solve the problem of insufficient strength of the inner flange node bolt and the stiffened plate, and reduce the stress amplitude of the inner flange node bolt, thereby improving the bearing capacity of the inner flange structure.

The utility model provides a single-pipe anti-seismic support, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The single-pipe anti-seismic support is arranged on a roof surface and comprises a stand column, a pipe clamp assembly, a first anti-seismic arm assembly and a second anti-seismic arm assembly, the stand column is vertically arranged, the upper end of the stand column is used for being fixedly connected to the roof surface, and the pipe clamp assembly is fixedly connected to the lower end of the stand column; the first anti-seismic arm assembly is located on one side of the stand column, the two ends of the first anti-seismic arm assembly are connected to the roof face and the pipe clamp assembly respectively, the second anti-seismic arm assembly is located on the other side of the stand column, the two ends of the second anti-seismic arm assembly are connected to the roof face and the pipe clamp assembly respectively, and the upper end of the stand column can be vertically adjusted relative to the position of the roof face. The single-pipe anti-seismic support is high in stability.

The present invention relates to the technical field of geological engineering survey equipment, and discloses a single-pipe water-pressure double-water-stop plug device. In the present invention, an upper water-stop plug and a lower water-stop plug are respectively arranged at the upper and lower ends of the water pressure test section. The first capsule and the second capsule are communicated through a connecting pipe, so that the water injection of the two capsules is carried out synchronously, and at the same time, they are attached to the hole wall, and a test section with better isolation effect can be formed, making the measured rock mass permeability coefficient more accurate; by controlling the movement of the support pipe, the inner cavity of the support pipe is communicated with the capsule, and the inner cavity of the support pipe is communicated with the test section pipe, and the two states are positioned and switched through the first annular boss, the second annular boss and the third annular boss, so as to realize the positioning control of the first piston pipe, which is convenient for separately injecting water into the capsule and the test section pipe, reducing the operation difficulty and being simple to operate.

This invention discloses a switching valve for multi-pipe fluid mixing and single-pipe fluid alternation metering, comprising a main body and a valve plate; the rear side of the main body is provided with a mixing fluid outlet and a metering fluid outlet; the main body contains a mixing chamber and a metering chamber, the mixing chamber being connected to the mixing fluid outlet and the metering chamber being connected to the metering fluid outlet; the valve plate is rotatably disposed in the main body; the front side of the main body is provided with multiple fluid inlets distributed on the same circle; the valve plate is provided with multiple first flow holes, the front port of each first flow hole being correspondingly arranged with the rear port of each fluid inlet, the rear port of one first flow hole being connected to the metering chamber, and the rear ports of the remaining first flow holes being connected to the mixing chamber. This achieves the purpose of metering any well in multiple wells and aggregating the remaining wells, eliminating the need to install a metering device in each well, requiring only one metering device connected to the metering fluid outlet of this switching valve, thus reducing overall costs.

To provide a veranda installation method that enables a worker to install a veranda bridge regardless of the positional relationship between the veranda and a temporary scaffold. [Solution] The three-dimensional balcony bridge installation method includes the step of horizontally fixing a single pipe 50 to a temporary scaffolding 100 using an orthogonal clamp 60 at a height (vertical direction) that is adjustable according to the height of the horizontal plane of a gangplank 20 provided on the balcony bridge 10. The three-dimensional balcony bridge installation method further includes the step of fastening a hook 40 provided on the balcony bridge 10 at a position in the horizontal direction (left and right direction) of the horizontally fixed single pipe 50. Furthermore, the gangplank 20 and hook 40 of the balcony bridge 10 are slidable in the front-to-back direction according to the distance to the single pipe 50. As a result, the three-dimensional balcony bridge installation method makes it possible to freely adjust the attachment position of the balcony bridge 10 to the temporary scaffolding 100 in three axial directions.

Cleaning equipment and devices are provided for fin fans that includes one or more blasting nozzles configured to propel a cleaning media from the blasting nozzle towards the fin fans to remove fouling on the fin fans, for instance, caused by dirt, dust, grease, plants, condensation and the like. The blasting nozzle if configured to propel a cleaning media, such as dry ice, that cleans the fin fans while minimizing risk of damage to the fin fans and also minimizing environmental impact associated with the cleaning activities. The cleaning equipment may be a single-hose, double-hose, or triple-hose system depending on the specific operating parameters and desires of a user. The cleaning equipment may include additional features, for instance, a fragmenter configured to break up dry ice particles, and / or a handle, trigger, and / or controls to manage operation of the device.

The disclosure provides a thin film capacitor assembly and a motor controller, and belongs to the technical field of motors. The thin film capacitor assembly comprises a plurality of cooling pipes, a plurality of columns of silicon carbide single pipes and a plurality of columns of capacitor cores. The plurality of cooling pipes are arranged side by side, and a cooling channel is formed between adjacent two cooling pipes, and the cooling pipes have cooling liquid. Each column of silicon carbide single pipes is located in a cooling channel, and each column of capacitor cores is located in a cooling channel, and the silicon carbide single pipes and the capacitor cores are located in different cooling channels. In this way, the heat dissipation effect inside the thin film capacitor assembly can be better, the temperature of the thin film capacitor assembly can be prevented from being too high, and the temperature resistance of the thin film capacitor assembly can be improved.

The invention discloses an inner flange single-pipe tower local anti-bending and anti-shearing rigidity reinforcing device and method.The reinforcing device comprises an upper circular channel steel, a lower circular channel steel, structural ribs, an inner flange reinforcing rib connecting structure and a fixed prestress spring structure; the upper circular channel steel and the lower circular channel steel are connected through structural ribs; fixed prestressed spring structures are arranged in grooves of the upper circular channel steel and the lower circular channel steel; inner flange reinforcing rib connecting structures are arranged at the bottom of the upper circular channel steel and the top of the lower circular channel steel; the upper circular steel channel and the lower circular steel channel are each formed by splicing two C-shaped steel channels, and the two C-shaped steel channels are fixed through circumferential gap filling rubber. By means of the design, on the basis that the external structure of the inner flange single-pipe tower is not changed, the bending rigidity of the local dangerous section is improved, the shearing force of the dangerous section is reduced, and then the technical effect of enhancing the strength of the flange plates of the two-section single-pipe tower is achieved.

The utility model discloses a low-pulsation high-capacity external rotation multi-pipe parallel peristaltic pump. A driving mechanism, a roller rotating mechanism and a pipeline mechanism are arranged on a mounting bedplate; the pipeline mechanism comprises an extrusion sleeve, inlet and outlet liquid distribution pipes and hoses, the liquid distribution pipes are arranged in the extrusion sleeve in the vertical direction, the multiple hoses are arranged on the outer side of the extrusion sleeve in parallel and at equal intervals in the vertical direction, and the two ends of each hose are connected with the liquid distribution pipes respectively; the roller rotating mechanism is positioned outside the hose and is connected with the driving mechanism; the driving mechanism drives the roller rotating mechanism to rotate and extrude the hoses, the single-pipe-multi-pipe-single-pipe fluid conveying process is achieved, continuous and uniform time differences exist when all the hoses are extruded and loosened, and continuous low-pulse fluid conveying is achieved. The peristaltic pump has the advantages of being low in abrasion loss of the inner wall of the hose and high in continuous filling precision, pulsation during fluid transmission is reduced, and the problems that in an existing peristaltic pump, due to the fact that the inner wall of the hose is seriously abraded, a large number of particles are generated, fluid is polluted, and the continuous filling precision is low are solved.

The utility model relates to a novel single tubular pile shipping bracket buttress, which comprises an upper buttress plate, a lower buttress plate and a buttress main body arranged between the upper buttress plate and the lower buttress plate, the buttress main body comprises four steel columns distributed at four corners of the buttress main body, each steel column comprises a wing plate I, a wing plate II and a web plate, the first wing plate and the second wing plate are continuous corrugated steel plates in the width direction of the first wing plate and the second wing plate. By optimizing the structural arrangement of the buttress main body, the overall bearing capacity of the buttress is increased, so that the buttress can be suitable for brackets and goods exceeding hundreds of tons.