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

The invention provides a K344 packer with double-stage packing units. The double-stage packing units are connected through a middle joint, wherein the lower central pipe of the first-stage packing unit is provided with an upper pressure guiding water hole and a lower pressure guiding water hole; a gap I is formed between the middle joint and the lower central pipe, and the upper end of the gap I is sequentially provided with a slidingly-sealed sealing ring and a limiting ring from top to bottom; the limiting ring and the lower central pipe are fixed through a shear pin, and a gap II is formed between the limiting ring and the lower central pipe; the upper pressure guiding water hole and the liquid inlet hole of the second-stage packing unit are separated on both sides of the sealing ring, and the lower pressure guiding water hole is communicated with the first-stage packing unit through the gap II and a water through hole formed in the limiting ring. When the first-stage packing unit fails, the second-stage packing unit can be opened automatically under the action of the pressure difference of an oil jacket and meanwhile close the liquid inlet channel of the first-stage packing unit to achieve alternation of the double-stage packing units, thereby guaranteeing reliable setting and packing of the packer and prolonging the service life of the packer.

The invention discloses a metering device for falling tobacco stems and a shredded tobacco metering system including the device. The metering device for falling tobacco stems includes a mounting frame, on which a metering mechanism and a flow diversion mechanism are arranged up and down, and the metering mechanism includes a collection funnel connected up and down. And the metering tube, the lower end of the metering tube is provided with a baffle, and the rotary cylinder drives the baffle to slide and connect with the lower end of the metering tube. Including a diverter funnel and a conical diverter; the invention can accurately measure the amount of tobacco stem fall in a timely and efficient manner, and then realize timely and accurate adjustment of the parameters of the air separation device, while improving the air separation effect of shredded tobacco and tobacco stems, The production lean management requirement is met, the cut tobacco waste is reduced, and the invention has a simple structure, little modification to the original equipment, and low modification cost.

The invention discloses an automatic detection device of a high-capacity BTM. The automatic detection device of the high-capacity BTM comprises a FSK and PSK detection module, a 27M receiving module, a control module, and a self-inspection sending module. The FSK and PSK detection module is used for receiving and detecting a FSK Balise telegram signal and / or a PSK Balise telegram signal of a Balise transmission module (BTM). The 27M receiving module is used for detecting a 27M power signal strength of an A4 interface of the BTM, and is used for supplying power to a power supply module. The control module is used for acquiring a detection result of the BTM based on the detection result of the FSK and PSK detection module as well as the detection result of the 27M receiving module, and is used for controlling the self-inspection sending module to send a FSK self-inspection telegram signal and / or a PSK self-inspection telegram signal to the BTM while the FSK Balise telegram signal and / or the PSK Balise telegram signal are (is) not received by the FSK and PSK detection module. The self-inspection sending module is used for sending the FSK self-inspection telegram signal and / or the PSK self-inspection telegram signal to the BTM based on instructions of the control module. The disclosed automatic detection device of the high-capacity BTM is able to detect working conditions of the high-capacity BTM, thereby guaranteeing the driving safety effectively.

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 downward-turnover type foldable escape window for a vehicle, and relates to passenger vehicles. The downward-turnover type foldable escape window for the vehicle comprises an outer window frame, an inner window frame with glass, a foldable middle plate and a foldable base plate, wherein the foldable base plate, the foldable middle plate and the inner window frame are installed inside the outer window frame in sequence from bottom to top through hinge structures, the outer window frame is installed on an external body frame, the foldable base plate is connected with the bottom of the outer window frame through a hinge, the foldable middle plate is connected with the foldable base plate through a hinge, the inner window frame is connected with the foldable middle plate through a hinge, the top of the inner window frame is connected with the outer window frame through a locking mechanism, self-locking gas springs are arranged between the foldable base plate and the foldable middle plate, the two ends of each self-locking gas spring are installed on the foldable base plate and the foldable middle plate respectively through the hinge structures, a gas spring is arranged between the inner window frame and the foldable middle plate, one end of the gas spring is connected with the inner window frame through the hinge structure, the other end of the gas spring is connected with one end of a connecting rod through the hinge structure, the other end of the connecting rod is connected with the external body frame, and a left lockhole, a right lockhole and an upper lockhole are formed in the outer window frame.

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 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 efficient air cooling device. The efficient air cooling device comprises draught fans and lower draught fans arranged below an air cooling roller way, and further comprises an air blowing pipeline with two air outlets. The air blowing pipeline and the draught fans are connected, and the two air outlets are located on the two sides of the air cooling roller way. The included angle of the air blowing pipeline and the air cooling roller way in the wire moving direction is 15 degrees to 90 degrees. The included angle of the air blowing pipeline and the air cooling roller way in the side air blowing direction is 0 degree to 90 degrees. According to the efficient air cooling device, by controlling the layout position and the air feeding angle of the air blowing pipeline, it can be ensured that all wire coils are covered with cooling air blown out of the draught fans; the cooling intensity and the wire cooling uniformity of an air cooling line can be improved effectively, so that the wire product performance is improved, and the problems that existing high speed stelmor air cooling lines for wires are insufficient in air cooling intensity, low in cooling speed and uneven in cooling are solved.

The invention belongs to the technical field of oilfield production, in particular to a polyacrylamide class polymer fracturing fluid gel breaking degradation method. The polyacrylamide class polymerfracturing fluid gel breaking degradation method comprises four steps of adding an energized agent, adding an additive, adding CO2 and open flow and depressurization, so that the polymer flowback liquid viscosity is reduced below 2mPa.s, the molecular weight degrades below 20000, the molecular particle size is within 80nm, the stratum damage rate is less than 5%, the flowback rate is increased more than 10%, the reservoir reformation requirement of low-permeability oil and gas fields is met, and thus, the fracturing construction effect is ensured.

The invention relates to an assembly method of an assembly type medical unit, belongs to the technical field of medical wall assembly, and solves the problem of complex medical wall assembly in the prior art. The assembly method of the assembly type medical unit is characterized by comprising the following steps: step 1, paying off, and pre-embedding a fixed part or a component; 2, arranging an assembly type medical unit module system; 3, assembling the assembly type medical unit modules; step 4, mounting a ceiling keel and a ground keel; and 5, connecting the assembled medical unit modules with the ceiling keel and the ground keel. Rapid assembly and disassembly of the medical wall are achieved, the decoration period is shortened, and the cost is reduced.

The invention discloses a method for reducing the total phosphorus content in sewage, which adopts a contact oxidation treatment process, and further includes the following treatment steps: preparing an aluminum sulfate aqueous solution with a mass concentration of 5-70 g / L as a phosphorus removal agent 1; The aqueous solution of polyaluminum sulfate with a concentration of 25-50 g / L is used as the phosphorus removal agent 2; the prepared phosphorus removal agent 1 is added to the water at the outlet of the contact oxidation tank, and stirred by the aeration of the contact oxidation tank to make the aluminum ions and the water Phosphate root reacts: add phosphorus removal agent 2 at the outlet of the contact oxidation tank or at the inlet of the sedimentation tank. The method of the invention has the characteristics of simple operation, less dosing, low cost, and no other pollution; the method of the invention improves the treatment process of the contact oxidation method, so that the removal rate of total phosphorus in sewage increases from 2.40% to 99.47% %, has a good treatment effect.