43results about How to "Protect and extend service life" patented technology

The invention belongs to the technical field of transforming an oil-gas field reservoir, aims to overcome the problem that the packer in the prior art easily fails due to a long-term repeated setting under a high-temperature high-pressure environment, and provides a multi-stage draggable water-jet packer tubular column and a technology. The multi-stage draggable water-jet packer tubular column comprises a water-jet gun and the packer, wherein the packer is connected to the lower end of the water-jet gun. The water-jet packer has a simple structure, a jet channel of the water-jet gun and a setting liquid inlet channel of the packer are simultaneously opened during the application of continuous operation of water-jet perforating and fracturing in a manner of throwing a ball to impact a sliding sleeve, the operation is convenient, the packer can be effectively protected, the service life of the packer can be effectively prolonged, and the working life of a nozzle of the water-jet gun can be prolonged to a maximum extent.

The invention discloses a solar liquid heat temperature difference power generation device. The solar liquid heat temperature difference power generation device comprises a solar heat accumulation water tank, a hot water pipe, a tap water tank, a cold water pipe, a cold end, a temperature difference power generation element, a hot end, an electromagnetic valve, a cold end water outlet pipe, a hotend water outlet pipe, a constant pressure one-way valve, a temperature storage water tank water inlet pipe, a heat storage water tank, a buoyancy plug and a control circuit, wherein the control circuit comprises a power distribution cabinet, an output electromotive force end of the temperature difference power generation element, a light intensity controller, an electromagnetic valve, a relay anda temperature difference controller which are connected in series in sequence; one end of the storage battery is connected onto a circuit between the power distribution cabinet and the temperature difference controller, and the other end of the storage battery is connected onto a circuit between the output electromotive force end and the light intensity controller. The device is designed by usingtemperature difference power generation and circuit principles, temperature difference formed between the cold end and the hot end enables the temperature difference power generation element to generate electromotive force, generated electrical energy is stored in the storage battery through the power distribution cabinet, and temperature difference power generation is carried out by sufficientlyutilizing solar energy, so that warm water can be generated for providing home application while the liquid cycle energy loss is reduced.

The invention provides an asphalt pavement pitted surface repairing material, a preparation method thereof and an asphalt pavement pitted surface repairing suspending sand material. The asphalt pavement pitted surface repairing material is prepared by, by mass, 100 parts of asphalt, 5-8 parts of emulsifier, 30-50 parts of clay, 10-15 parts of acrylic resin and 150-250 parts of water. The asphalt pavement pitted surface repairing material has the advantages that the clay, the emulsifier and the water are used to form slurry type emulsification soap liquid used for emulsifying asphalt so as to allow components to be combined to form an integrated whole and increase the viscosity of emulsified asphalt, the asphalt pavement pitted surface repairing material can replace asphalt pavement surfaceoil to be mixed with fine aggregates during use, the loose aggregates can be locked under a low-thickness condition, influence on pavement elevation is avoided, damage, caused by oxidation, weather and traffic, to the original pavement is prevented, and the service life of the pavement is prolonged.

The invention relates to the technical field of automobile electronics, specifically to a method and a device for cleaning up carbon deposited in an automobile engine, wherein the device comprises a sensor, a controller and a pulse generator, wherein the controller is composed of a power circuit, a signal input circuit, a processor and a signal output interface, wherein the signal input circuit, the processor and the signal output interface are orderly connected; the pulse generator is composed of a condition indicator, a pulse circuit and a signal output circuit, wherein the pulse circuit and the signal output circuit are connected with each other; the sensor is connected with the signal input circuit of the controller; and the pulse generator is connected with the signal output interface of the controller. The method and the device provided by the invention can transmit a pulse signal timely according to an operation condition of the engine so as to clean up original deposited carbon of the engine, prevent newly deposited carbon from being generated, ensure a combustion condition is optimal under various conditions, and improve overall performance of entire automobile.

The invention provides a method for preparing leuprorelin. The method comprises the following steps: (1) taking Fmoc-Pro-CTC-OH and CTC (Carbon Tetrachloride) resin as starting raw materials and treating to obtain Fmoc-Pro-CTC-OH resin; (2) sequentially connecting the Fmoc-Pro-CTC-OH resin with an amino acid with a protecting group by adopting a gradual coupling manner of a Fmoc/tBu solid-phase method to synthesize side chain wholly-protected leuprorelin precursor peptide-resin; (3) taking a 20 percent trifluoroethanol/DCM (Dichloromethane) solution as a cutting reagent and cutting the side chain wholly-protected leuprorelin precursor peptide-resin, so as to obtain a side chain wholly-protected leuprorelin precursor peptide; (4) carrying out ethyl amination on the side chain wholly-protected leuprorelin precursor peptide to obtain side chain wholly-protected leuprorelin; (5) carrying out side chain cutting on the side chain wholly-protected leuprorelin to obtain a leuprorelin crude peptide; (6) carrying out CM purification and HPLC (High Performance Liquid Chromatography) purification, concentration, dissolving and freeze-drying on the leuprorelin crude peptide to obtain a high-purity leuprorelin crude drug. The method provided by the invention has the advantages of simplicity in operation, short period, low cost, high product yield and small environment pollution and is very suitable for industrial production.

The invention discloses an air compressor heat dissipation and noise reduction box convenient to disassemble. The air compressor heat dissipation and noise reduction box convenient to disassemble comprises a bottom plate, a top cover plate, a front door plate, a rear door plate, two side plates, four vertical frame columns and a box body frame, wherein upper buckling plates are arranged at the upper ends of the front door plate and the rear door plate, lower buckling plates are arranged at the lower ends of the front door plate and the rear door plate, grooves corresponding to the upper buckling plates and the lower buckling plates are formed in the box body frame, an air inlet and a fan assembly are arranged on the front door plate, a heat dissipation port is formed in the rear door plate, the fan assembly comprises a driving motor and axial flow fan blades, the axial flow fan blades comprise a hub and at least one blade, the blades are arranged on the peripheral wall of the hub, first flow guiding grooves are formed in the negative pressure surfaces of the blades, and the first flow guiding grooves comprise at least two sub-grooves arranged along the radial direction of the hub at intervals. The door plates of the air compressor are convenient to disassemble and convenient to overhaul, heat dissipation fans are installed on the door plates of an air compressor box body, and the fans can effectively reduce the air supply noise.

The invention discloses an air compressor box body realizing lifting heat dissipation and noise reduction. The air compressor box body realizing lifting heat dissipation and noise reduction comprisesa bottom plate, a top cover plate, a front door sheet, a rear door sheet, two side plates, four vertical frame columns and a box body frame, wherein an air inlet is formed in the front door sheet, a fan assembly and a lifting assembly, the lifting assembly controls lifting of the fan assembly, and a heat dissipation port is formed in the rear door sheet; and the fan assembly comprises a driving motor and an axial flow fan blade, wherein the axial flow fan blade comprises a hub and at least one blade, and the blade is arranged on the outer peripheral wall of the hub, a first flow guide groove is formed in the negative pressure surface of the blade, and the first flow guide groove comprises at least two sub-grooves arranged in the radial direction of the hub at intervals. According to the air compressor box body, a heat dissipation fan is mounted on the front door sheet, the fan can realize lifting heat dissipation, the heat dissipation effect is good; and meanwhile, blades of the fan are improved, so that the fan can also effectively reduce air supply noise.

The invention relates to a direct current frequency-conversion speed-regulation temperature control system which comprises a power supply system, a PWM (pulse width modulation) fan, a variable speed fan and an AO (analogue output) drive compressor. The system is characterized in that the power supply system provides minus 48V direct current; the rotation speed of the PWM fan is adjustable so as to achieve adjustable wind speed; and the compressor is a variable speed compressor, and a flexible start mode is adopted. The temperature control method of the direct current frequency-conversion speed-regulation temperature control system of the claim 1 is utilized, the cold or heat output of the refrigerating and heating unit is mainly controlled through target unit temperature curve changes; the method for controlling the cold and heat is provided according to requirements, and the temperature requirement of the target unit can be met with less energy resource consumption; and the energy conservation maximization is realized.

The invention provides a double-mode leak detector and a detection method. The double-mode leak detector comprises a detection gas source, a gas charging valve, a reference gas channel and a gas channel to be detected. The detection gas source is connected with the gas charging valve and is connected with the reference gas channel and the gas channel to be detected behind the gas charging valve. The reference gas channel and the gas channel to be detected are connected with balance valves respectively. a pressure difference sensor is in series connection between gas channels behind the reference gas channel and the balance valve of the gas channel to be detected. The double-mode leak detector also comprises a flow detection gas channel. The flow detection gas channel is connected with two flow detection values and a flow sensor. The flow sensor is located between the two flow detection valves. The double-mode leak detector and the detection method has advantages of wide application scope, low purchase cost, small land occupation space, high detection efficiency and the like. In addition, the balance valves in the reference gas channel and the gas channel to be detected can protect the pressure difference sensor and prolong the service life of the pressure difference sensor. The flow detection valve in the flow detection gas channel can ensure accuracy of the detection result during detection in a pressure difference mode.

The invention discloses an air conditioner air outlet louver used for an agricultural locomotive. The air conditioner air outlet louver used for the agricultural locomotive comprises a louver frame, the louver frame is installed in a vehicle body in an embedded mode, a louver is installed in the louver frame, a movable block is arranged at the front end of the louver, and the front surface of thelouver frame is evenly coated with phosphor. Pulling bands are arranged on the front surface, located on the upper and lower sides of the louver, of the louver frame. Elastic bands are connected withthe two ends of the pulling bands. Fixed blocks are connected with the one ends, located on the front surface of the louver frame, of the elastic bands. A fixed frame is installed on the rear surfaceof the louver frame in an embedded mode. The invention increases the beauty of the louver frame at night, prevents dust from entering the interior of an air-conditioner along the louver frame and affecting the service life of the air conditioner, can cushion the acting force when installating between the louver frame and the vehicle body and then protects and prolongs the service life of the louver frame, and at the same time the installation and disassembly modes of the louver frame are easy.

The invention discloses an air compressor box capable of achieving convection heat dissipation and noise reduction. The box comprises a bottom plate, a top cover plate, a front door plate, a rear doorplate, two side plates, four vertical frame columns and a box body frame; door hinges are arranged on the side edges of the front door plate and the rear door plate; a bolt corresponding to the doorhinge is arranged on the box body frame; the upper portion of the front door plate and the lower portion of the rear door plate are each provided with an air inlet and a fan assembly. Heat dissipationopenings are formed in the lower portion of the front door plate and the upper portion of the rear door plate, and the fan assembly comprises a driving motor and an axial flow fan blade; the axial flow fan blade comprises a hub and at least one blade body, a first flow guide groove is formed in the negative pressure face of each blade body, and each first flow guide groove comprises at least twosub-grooves formed in the radial direction of the hub at intervals. The door plate of the air compressor is convenient to mount and dismount, the cooling fans are mounted on the front door plate and the rear door plate of the air compressor box body to form convection heat dissipation, the heat dissipation effect is good, and the fans can further effectively reduce air supply noise.

The invention discloses a liquefied natural gas pre-refrigeration agent compressing and skid-mounted packaging module which comprises a shell with a hollow cavity, wherein a pre-refrigeration agent compressor, a compressor lubricating system, a lubricating oil temperature reduction heat exchanger and a compressor lubricating oil fine separator are arranged in the shell; the shell comprises a left wall plate, a right wall plate, a main wall plate and a back wall plate; containers used for supplying air are arranged on the outer wall of each of the left wall plate, the right wall plate and the main wall plate; an air feeder communicated with the cavity of each of the containers is arranged on one side wall of each of the containers; two or more truncated-cone-shaped cavities are formed in the other side wall of each of the containers; a truncated-cone-shaped cavity channel corresponding to the truncated-cone-shaped cavities is formed in each of the truncated-cone-shaped cavities in a penetrating manner from one end to the other end; two or more truncated-cone-shaped run-through cavity holes opposite to one end, shorter in the vertical span, of each of the truncated-cone-shaped cavities are formed in each of the left wall plate and the right wall plate. According to the liquefied natural gas pre-refrigeration agent compressing and skid-mounted packaging module, the skid-mounted packaging module can be cooled by ventilation and refrigerated effectively.

The invention discloses a lithium battery, and the lithium battery comprises a packaging structure and a lithium battery cell arranged in the packaging structure. The lithium battery cell comprises afirst current collector, a negative electrode layer, an electrolyte layer, a positive electrode layer and a second current collector. The packaging structure contains the following materials in partsby weight: 50-52 parts of polyethylene glycol terephthalate; 28-30 parts of polyamide; 12-14 parts of triacetyl cellulose; 2-4 parts of aluminum nitride; 1-3 parts of zirconium nitride; 3-5 parts of silicon nitride; and 0.2-2 parts of yttrium nitride. According to the lithium battery with the long service life, the packaging structure is arranged to protect and prolong the service life of the all-solid-state lithium battery, the battery structure can be effectively prevented from being damaged by an external force, and the battery structure is effectively protected; an insulating layer is arranged in the packaging structure, so that the safety performance of the lithium battery is improved; and through the arrangement of the heat dissipation plate, the heat is prevented from accumulating on the insulating layer, thereby guaranteeing the safety performance and the service life of the lithium battery.

A pipeline endoscope probe tube auxiliary tool comprises a range retaining rod and a plurality of cross-shaped clamping frames fixed to the range retaining rod. The four ends of the cross of each cross-shaped clamping frame are provided with fixed pulleys respectively. The center of each cross-shaped clamping frame is equipped with a probe tube hole. The circumference of the each cross-shaped clamping frame is provided with a pin hole. The diameter of the probe tube hole matches the outer diameter of the probe tube. The diameter of the pin hole matches the outer diameter of the range retaining rod. The pipeline endoscope probe tube auxiliary tool solves the defects of a conventional endoscope probe tube, greatly improves the inspection effect of the endoscope, and is suitable all portable endoscopic devices currently in use without re-customized purchase, protects and prolongs the service life of the probe tube, and greatly facilitate the operation in pipeline inspection in addition to fast and convenient installation.

The invention discloses a wear-resisting plate suitable for a bulk cargo cabin lining, and relates to the technical field of ship cargo cabin loading and unloading protection, and the wear-resisting plate is technically characterized by comprising wear-resisting thick plates and wear-resisting thin plates which are arranged on a steel plate in a cabin, the thickness of the wear-resisting thick plates is 12 mm, and the wear-resisting thick plates are arranged at a directly impacted part in the cabin; the wear-resistant thin plates are 10mm in thickness and are arranged at an impact receiving part in the cabin; the wear-resistant thick plates and the wear-resistant thin plate are clamped with each other to form a whole which completely covers the steel plate in the cabin; the service life of the bottom steel plate in the cabin is protected and prolonged, and the maintenance and replacement cost is reduced.