43results about How to "Meet the needs of renovation" patented technology

The invention relates to a gelling agent for gelled acid system and preparation and application thereof. The gelling agent is a copolymer of three monomers, i.e., acryloyloxyethyl trimethyl ammonium chloride, acrylamide and 2-acrylamide-2-methyl propyl sulfonate, and has a molecular weight of 8000000-15000000 Dalton, and as to ratios of the three monomers, a molar ratio of the acrylamide to the 2-acrylamide-2-methyl propyl sulfonate is (0.20-96.75):1, and a molar ratio of the acryloyloxyethyl trimethyl ammonium chloride to the 2-acrylamide-2-methyl propyl sulfonate is (7.40-201.21):1. The gelling agent prepared herein and the gelled acid system have good temperature tolerance, good retardancy and good corrosion inhibition and are applicable to reforming of deep-well high-temperature reservoirs.

The invention discloses an open hole segmented acid fracturing easy-to-drill well completion production tubular column and a working method thereof. The open hole segmented acid fracturing easy-to-drill well completion production tubular column comprises an oil pipe, a packer, an easy-to-drill releasing device, an easy-to-drill oil pipe, easy-to-drill packer sieve tube sliding sleeve groups, an easy-to-drill setting ball seat and an easy-to-drill floating shoe which are sequentially connected from top to bottom. Each easy-to-drill packer sieve tube sliding sleeve group comprises an easy-to-drill open hole packer, an easy-to-drill temporary plugging sieve tube and an easy-to-drill fracturing sliding sleeve which are connected from top to bottom, and the number of the easy-to-drill packer sieve tube sliding sleeve groups is at least one. Each easy-to-drill temporary plugging sieve tube comprises a base pipe, a coupling and soluble plugs, wherein the base pipe adopts a circular pipe column, holes are uniformly drilled in a pipe body of the base pipe, and the soluble plugs are arranged in the holes and tightly connected and fixed to the holes. A check valve is arranged in the easy-to-drill floating shoe. According to the open hole segmented acid fracturing easy-to-drill well completion production tubular column and the working method thereof, rapid and convenient drilling treatmentcan be realized, a well wall can be effectively supported, pipe column sand burial caused by the collapse of the well wall is prevented, various designs are provided for the internal structure, and different requirements are met.

The invention discloses a device and a method for transferring refined ethylene oxide through ethylene glycol. The device comprises a refining tower and a tower kettle reboiler, wherein the top of the refining tower is sequentially connected with a condenser, a copious cooler and a backflow tank and then is divided into a pipeline (a) and a pipeline (b); the pipeline (a) is connected with the top of the refining tower; the refining tower is provided with side aldehyde discharging lines; the tower kettle reboiler is installed in an immersed manner and adopts steam heating; a refining tower kettle is provided with a kettle liquid cooler; after an outlet of the refining tower kettle is connected with the kettle liquid cooler, materials are combined with materials in the side aldehyde discharging lines, are combined with materials in the pipeline (b), and are delivered to an ethylene glycol production system. The method comprises the following steps of: discharging aldehyde-containing ethylene oxide through the side aldehyde discharging lines; cooling part of materials in the refining tower kettle, combining the materials with the materials in the aldehyde-containing ethylene oxide and the pipeline (b), and delivering the materials to the ethylene glycol production system. According to the device and the method, the yield of ethylene oxide products with great benefits can be greatly improved, the operation flexibility of the device is improved, and the productivity of ethylene oxide and ethylene glycol products is adjusted.

The invention discloses an embroidery machine good in frame movement stability, a driving device for a frame and a bridge auxiliary rail. The embroidery machine comprises the bridge auxiliary rail andY driver; the bridge auxiliary rail comprises an auxiliary rail body extending in the first direction, a bridge auxiliary rail driving guide rail which is located above the auxiliary rail body and extends in the second direction perpendicular to the first direction, a bridge driving trolley which is arranged on the bridge auxiliary rail driving guide rail and a bridge auxiliary rail driving guiderail transmission box assembly arranged on the bridge auxiliary rail driving guide rail, and the bridge driving trolley is connected with the center of a rack; one end of the bridge auxiliary rail driving guide rail is connected with a cross beam through a connecting support assembly, and the other end of the bridge auxiliary rail driving guide rail is connected with the lower portion of the rackthrough the bridge auxiliary rail driving guide rail transmission box assembly; the Y driver comprises a Y drive guide rail which is connected to the lower portion of the rack and extends in the Y axis direction and a Y drive trolley which is driven by a belt pulley and a conveyor belt to be slidably arranged on the Y drive guide rail, and the Y rive trolley is connected with the lower surface ofthe auxiliary rail body. Accordingly, under extra long travel and high rotation speed, good structure and movement stability of the frame can still be kept, vibration is small, frame movement deformation is not likely to be generated, and the embroidery output quality is high.

An upgrading and reconstruction method based on a constructed rapid infiltration sewage treatment facility is an improved method for the constructed rapid infiltration sewage treatment facility, and comprises the following steps: calculating the volume of constructed rapid infiltration tanks in the constructed rapid infiltration sewage treatment facility; respectively reconstructing a plurality of constructed rapid infiltration tank bodies into multiple stages of AO tanks connected in series, and meanwhile, reserving original water outlets in the AO tanks arranged in an even stage; directly communicating water outlet ends of an original coarse screen and a pumping station with water inlets of reconstructed multiple stages of AO tanks through pipelines; correspondingly taking a presedimentation basin and a sand filter, which are sequentially communicated with water outlet ends of the original coarse screen and the pumping station in the constructed rapid infiltration sewage treatment facility, as a secondary sedimentation basin and an advanced treatment sand filter, which are sequentially communicated, and communicating an output opening of the advanced treatment sand filter with an UV disinfection pool, communicated with a main water outlet pipe in the constructed rapid infiltration sewage treatment facility, through a pipeline; communicating each stage of AO tank with an air blower arranged outside through an aeration pipeline. The upgrading and reconstruction method can meet the reconstruction requirement of most constructed rapid infiltration sewage treatment factories, and is low in investment.

The invention discloses a heating system for a centralized lubrication pipeline and a usage method. The system comprises a terminal strip, electric heating nets, return lines, connecting rings, external heating wires, a temperature control switch, a contactor, a timer, a heating power supply and a circuit breaker, wherein the electric heating nets of all oil pipelines are connected in series sequentially through the terminal strip; the electric heating nets are arranged inside the oil pipelines; the return lines are parallel with and insulated from the electric heating nets; the connecting rings are arranged at two ends of each oil pipeline; the temperature control switch is used for controlling connection of the power supply; the contactor is controlled to be connected with the power supply; the timer is responsible for setting of cycles and time; and the circuit breaker plays a role in protection. The electric heating nets, with which the pipelines are sleeved, are electrically connected in series, and the power supply is switched on under the control of the temperature control switch so as to heat the whole pipeline. The method is even and synchronous in pipeline heating effect, one power supply can drive heating of all the branch pipelines, the heating efficiency is high, and the cost is low; and the heating power supply can be adjusted according to specific conditions of the pipelines after laying, so that the method can meet requirements under different conditions more flexibly as well as meet requirements of pipeline transformation in the future.

The sliding damping support comprises a masonry column, a positioning plate and a bearing plate which are arranged on the masonry column, and further comprises a connecting plate and a polyfluortetraethylene plate, the connecting plate is arranged on the positioning plate, and the polyfluortetraethylene plate is arranged at the end, away from the positioning plate, of the connecting plate in a sliding mode; the bearing plate is arranged at the end, away from the connecting plate, of the polyfluortetraethylene plate, a sliding groove is formed in the bearing plate in the length direction, the sliding groove penetrates through the bearing plate and the polyfluortetraethylene plate in the vertical direction, a limiting screw is vertically inserted into the sliding groove, and one end of the limiting screw is fixedly connected to the connecting plate. The polyfluortetraethylene plate drives the bearing plate to slide through the sliding grooves, horizontal stress is converted into a part of kinetic energy, and then a part of stress is offset through friction force generated in the sliding process. The roof truss support has the function of improving the capability of resisting the horizontal acting force.