51results about How to "Meet the requirements of on-site use" patented technology

The invention discloses a dynamic detection technology for well control products and wellhead devices in a state of high and low temperature. The air temperature of an inside cavity for measured objects is heated to a rated high temperature of 60 DEG to 121 DEG or reduced to a rated low temperature of subzero 18 DEG to subzero 60 DEG, then the temperature is maintained at the rated temperature; a measured object is pressurized to the rated working pressure of 1 to 140 MPa, being repeatedly opened at least 20 times at the rated pressure; the temperature value and the pressure value are collected after the rated pressure stabilizing for 0.5 to 2 hours, then whether the quality and performance of the measured object is qualified is decided by fluctuations of the temperature value and the pressure value. The dynamic detection technology comprising pressure testing in high and low temperature conditions, then increasing or reducing the temperature of the measured object, after repeatedly opening in high and low temperature conditions, simulating the sealability of the measured object after multiple opens with low surrounding temperature and high medium temperature to simulating the practical working condition to decide whether the quality and performance of the measured object meets the requirements of the site use.

The invention belongs to the technical field of oil field chemistry and in particular relates to a neutral hard scale softening agent for a three-component compound flooding screw pump well, aiming at solving the problem that the screw pump well is excessively corroded by a scale cleaning agent so that the screw pump well cannot be washed with acid after scale is formed. The neutral hard scale softening agent is prepared from organic phosphate, organic phosphonate, a dispersant, alkali and water and the content of the components is as follows in percentage by weight: 10 percent to 40 percent of the organic phosphate, 2 percent to 10 percent of the organic phosphonate, 1 percent to 5 percent of the dispersant, 1 percent to 3 percent of the alkali and 50 percent to 80 percent of the water. The neutral hard scale softening agent provided by the invention can be used for scale removal and releasing of the three-component compound flooding screw pump well; the scale of parts including a screw pump rotor and the like is completely softened and fallen off and completely cleaned; the neutral hard scale softening agent has the advantages that the corrosion is low, any injury on a chromium-plated coating of the screw pump rotor is not caused, the coating of the rotor does not fall off, a condition that working is not carried out due to pump leakage is avoided and the production time efficiency of the screw pump well can be effectively ensured and the like.

The invention relates to a slender-rod pressure release valve. A valve body is a cylinder; an upper valve cover is hermetically arranged on the top of the valve body; a bottom cover is hermetically arranged on the bottom of the valve body; the upper valve cover, the valve body and the bottom cover form a sealed cylindrical cavity; a valve element is assembled in the cylindrical cavity and can move up and down; the lower end of a valve rod is connected with the valve element, and the upper end of the valve rod passes through a central through hole of the upper valve cover; the top of the valve rod is connected with the lower end of a slender rod vertically arranged; the upper end of the slender rod is connected with a support rack; the support rack is fixedly connected with the upper valve cover; the bottom cover is provided with a medium high-pressure input passage; inner port of the medium high-pressure input passage is opposite to the bottom of the valve element; the valve body is provided with a medium low-pressure output passage; an inner port of the medium low-pressure output passage is positioned in an inner wall of the valve body; when the valve element is kept static, the inner port of the medium low-pressure output passage is plugged by the valve element; when the valve element moves upward, the inner port of the medium low-pressure output passage is opened. The slender-rod pressure release valve is wide in application range and high in adjustment precision.

The invention discloses a roller dismounting device for a sizing mill. The roller dismounting device comprises a downward pressing device, a push-pull device and a rack, wherein the downward pressing device comprises a downward pressing hydraulic cylinder and a hydraulic system A matched with the downward pressing hydraulic cylinder, the downward pressing hydraulic cylinder is vertically fixed at the top end of the rack, the telescoping end of the downward pressing hydraulic cylinder faces downwards, and the hydraulic system A controls telescoping of the downward pressing hydraulic cylinder; a photoelectric switch A is further arranged on the rack; the push-pull device comprises a push-pull hydraulic cylinder, a hydraulic system B matched with the push-pull hydraulic cylinder, guide tracks and a bearing plate, the push-pull hydraulic cylinder is horizontally arranged on the surface of a work platform of the rack, the guide tracks are laid on the surface of the work platform of the rack, the bearing plate is glidingly mounted on the guide tracks, the push-pull hydraulic cylinder drives the bearing plate to move along the guide tracks, the bearing plate is used for accommodating rollers, and a photoelectric switch B is further arranged on the surface of the work platform of the rack. By means of the roller dismounting device for the sizing mill, the working efficiency for roller dismounting is improved, the labor intensity is reduced, and the safety coefficient of work is increased.

The invention discloses a deep dehumidification energy-saving fresh air unit. The unit consists of a fresh air duct and a return air duct, a fresh air inlet and an air supply port are arranged on thefresh air duct, a fresh air fan is arranged in the fresh air duct between the fresh air inlet and the air supply port, a return air inlet and an exhaust port are arranged on the return air duct, the return air duct between the return air inlet and the exhaust port is provided with a return air fan, a first direct expansion system, a second direct expansion system and a third direct expansion system are cooperatively arranged in the fresh air duct and the return air duct. The first direct expansion system comprises a first evaporator, the second direct expansion system comprises a second evaporator, and the third direct expansion system comprises a third evaporator and a third condenser, wherein the first evaporator, the second evaporator, the third evaporator, and the third condenser are sequentially disposed in the fresh air duct. The invention fully utilizes the ground source water, the return air energy and the reheat energy, and simultaneously the first evaporator replaces the water meter cooler, the secondary heat transfer energy loss is reduced, and the whole energy saving effect is obvious. At the same time, the invention is suitable for winter working condition and can heatfresh air.

The invention discloses an adjustable pull rod of a core bar support frame. The adjustable pull rod (1) is characterized by consisting of a first pull rod (2), a second pull rod (3), an adjusting nut (4) and a fixed bolt (5), wherein the first pull rod (2) is an integrated structure, one end is a pin shaft hole having a shaft sleeve, and the other end is a projected external thread; the second pull rod (3) is an integrated structure, one end is a pin shaft hole having a shaft sleeve, and the center of the other end is an internal thread; the adjusting nut (4) is an internal / external thread structure, is in fit connection with the external thread of the first pull rod (2) through the internal thread, is in fit connection with the internal thread of the second pull rod (3) through the external thread, and is positioned on the second pull rod (3) through the fixed bolt (5); internal and external threads of the adjusting nut (4) have the same rotating direction and different pitches; and when the adjusting nut (4) rotates by one lap, the length of the pull rod is changed by a pitch difference, so that the purpose of finely adjusting the length of the pull rod can be achieved, and the precise centering of three support rollers of the core bar support frame is realized.

The invention relates to a small-flow control valve. A guide sleeve is arranged in a valve cavity and is also arranged on a spacer bush; a bush seat is arranged in an inner hole of the guide sleeve, is also arranged on a valve seat and is pressed by the guide sleeve; a sealing soft bush is arranged in an inner cavity of the bush seat; bush assembly center through holes which axially penetrate through and are communicated are formed in the center of the bush seat and the center of the sealing soft bush; a valve core is assembled in the inner hole of the guide sleeve, an inner hole of the spacer bush, the bush assembly center through holes and the valve seat center hole in a moving manner; the outer circumferential wall of the upper part of the valve core and the inner hole wall of the guide sleeve are in seal sling fit; the outer wall of the lower part of the valve core is in seal sliding fit with the inner walls of the bush assembly center through holes and the inner wall of the center hole of the valve seat; a V-shaped oblique cutting groove along the length direction of the valve core is formed in the outer wall of the lower part of the valve core and has an inclined angle alpha in the length direction and an included angle beta in the direction of the cross section. According to the small-flow control valve disclosed by the invention, the field use requirement can be better met, the miniflow adjustment is realized, the manufacturing cost is reduced, and the control precision is improved.

The invention discloses an underwater drilling tool attitude detection system. The system comprises a tunneling mechanism, a power lift mechanism arranged on the ground and used for lifting and releasing the tunneling mechanism and an operation control system used for controlling operation of the mechanisms, wherein the tunneling mechanism comprises a tunneling rack, the outer end part of the tunneling rack is in sliding pilot fit with a chute type anti-torque device fixedly mounted on the wall of a vertical shaft, a main drive device is mounted in the middle of the tunneling rack and connected onto a drill boom located below the tunneling rack, and at least two auxiliary drive devices mounted on the drill boom are connected with a drilling tool located below the drill boom; two tilt anglesensors are horizontally mounted on the tunneling rack, a plurality of first position sensors are uniformly distributed on the drill boom, a plurality of second position sensors are uniformly distributed on the drill boom, and the tilt angle sensors, the first position sensors and the second position sensors are connected with the operation control system. The underwater drilling tool attitude detection system is high in sensitivity, quite low in power loss and high in anti-interference performance and can meet the requirement of field service.

The invention provides a TFK-II parking anti-running device computer control system. The TFK-II parking anti-running device computer control system comprises a computer operation platform, a manual emergency operation platform and a control cabinet, wherein the computer operation platform and the manual emergency operation platform are arranged in a peak tail signal cabin, and the control cabinet is arranged in a transfer room near an equipment site. An optical cable serves as a transmission medium between the computer operation platform and the control cabinet and comprises an optical fiber MODEM1-1 connected to the computer operation platform and an optical fiber MODEM1-2 connected into the control cabinet, and another optical cable serves as a transmission medium between the manual emergency operation platform and the control cabinet and comprises an optical fiber MODEM2-1 connected to the manual emergency operation platform and an optical fiber MODEM2-2 connected into the control cabinet, wherein the optical fiber MODEM1-1 is connected with the optical fiber MODEM1-2, and the optical fiber MODEM2-1 is connected with the optical fiber MODEM2-2. The TFK-II parking anti-running device computer control system has the advantages of being long in transmission distance, high in stability, strong in extended function, stable in performance, high in reliability and convenient to operate, modular design is adopted, and an operation interface is clear and visualized.

The invention discloses a cooling coating for a power device and a preparation method thereof. The cooling coating comprises the following raw materials in parts by weight: 40-48 parts of epoxy resin,12-16 parts of conductive metal powder, 9-13 parts of carbon nanotubes, 3-5 parts of fumed silica, 4-8 parts of polyacrylamide, 2-4 parts of sodium dodecyl benzene sulfonate, 1-4 parts of dioctyl phthalate, 4-6 parts of silicon nitride, 2-5 parts of nano titanium dioxide, 4-8 parts of polyvinyl butyral, 1-3 parts of a coupling agent, 0.5-2.8 parts of a dispersant, 0.3-2.2 parts of a defoamer and22-34 parts of a solvent. The cooling coating has a cooling function, can effectively reduce the temperatures on the surface and inside the power device, and has an obvious cooling effect.

The invention discloses a heat dissipation coating for a power device and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 40 to 48 parts of organic silicon resin, 12 to 16 parts of conductive metal powder, 9 to 13 parts of carbon nano tube, 3 to 5 parts of silicon dioxide, 4 to 8 parts of polyacrylamide, 2 to 4 parts of bentonite, 1 to 4 parts of dioctyl phthalate, 4 to 6 parts of silicon nitride, 2 to 5 parts of nano titanium dioxide, 4 to 8 parts of polyvinyl butyral, 1 to 3 parts of adhesion promoter, 0.5 to 2.8 parts of dispersingagent, 0.3 to 2.2 parts of leveling agent and 22 to 34 parts of solvent. The heat dissipation coating disclosed by the invention has a heat dissipation function, can effectively reduce temperatures ofthe surface and the inside of the power device and has obvious heat dissipation and cooling effects.