31results about How to "Guaranteed cracking effect" patented technology

The invention discloses an upward drilling negative pressure advancing type injection low-temperature fluid staged cycle fracturing method. First, water jet slotting equipment is used to set up three crack areas, and water is injected through a water injection pipe to fill up a hydraulic plugging device. In this way, three sealed fracturing chambers are formed, and the three sealed fracturing chambers are placed in a negative pressure state. Cryogenic fluid is injected into the three sealed fracturing chambers, and the cryogenic fluid fills each sealed fracturing chamber in turn, and the three sealed fracturing chambers are filled with low-temperature fluid. The fracture area in the fracturing chamber is subjected to cold impact fracturing. As the low-temperature fluid in the sealed fracturing chamber is heated and gasified by the geothermal heat, the internal pressure of the low-temperature fluid exhaust pipe exceeds the opening threshold of the safety pressure relief valve, and the safety pressure relief valve opens to make the corresponding The variable gas is discharged, thereby reducing the air pressure inside the low-temperature fluid exhaust pipe and each sealed fracturing chamber, so that the cycle is repeated, and the gas expansion force fracturing is performed on each sealed fracturing chamber multiple times. It can effectively ensure the rapid injection of low-temperature fluid and the cracking effect on coal and rock mass, and will not cause pollution to the surrounding environment.

The invention discloses a blast furnace slag liquid face crusting breaking device, and relates to the technical field of chemical metallurgical. The problems that a crane or electric block is used forlifting a heavy hammer for slag breaking, the slag breaking position is not accurate, residue bonded on the heavy hammer cannot be cleaned, and slag breaking force is not enough are solved. Accordingto the technical scheme, the blast furnace slag liquid face crusting breaking device comprises a supporting frame, guide rods, a heavy hammer and a slag cleaning plate; a slag breaking platform is arranged on stand columns of the supporting frame, the guide rods are arranged on the slag breaking platform, a transverse connecting rod is arranged on the guide rods in a penetrating manner, a heavy hammer connecting rod and a slag breaking oil cylinder are connected to the transverse connecting rod, the slag breaking oil cylinder is used for pushing the heavy hammer to carry out slag tank liquidface crusting breaking, due to the fact that the heavy hammer is in rigid connection, pressure can be applied through the slag breaking oil cylinder, the slag breaking force can be improved, and the accurate slag breaking position is ensured. The slag cleaning plate is arranged on the slag breaking platform, and can be controlled through the slag cleaning oil cylinder, blast furnace slag remainingon the heavy hammer can be removed, and the blast furnace slag liquid face crusting breaking device is easy and convenient to operate, simple in structure and beneficial for maintaining and overhauling.

The invention relates to a hulling machine for sunflower seeds. The hulling machine comprises a feeding hopper, a lifting conveying belt, a large and small seed separating sieve, an upper sieve vibrating device and a lower sieve vibrating device which are arranged below a material outlet at the top of the lifting conveying belt, grinding conveying belts arranged below the upper sieve vibrating device and the lower sieve vibrating device respectively, grinding rollers arranged in middles of the grinding conveying belts, brush devices arranged above the grinding conveying belts, arc-shaped collecting plates arranged at tail ends of the grinding conveying belts obliquely downwards, a rotating centrifugal barrel arranged below material outlets of the arc-shaped collecting plates, a centrifugal barrel discharging port arranged at the lower part of the rotating centrifugal barrel, a triple separating sieve arranged below the centrifugal barrel discharging port and multiple collecting tanks arranged at material outlets of all layers of the triple separating sieve, wherein the large and small seed separating sieve comprises an upper sieve and a lower sieve; the upper sieve extends obliquely downwards to above the upper sieve vibrating device; the lower sieve extends obliquely downwards to above the lower sieve vibrating device; sieve holes are formed in the upper sieve corresponding to the lower sieve.

The invention discloses a method for grading fracturing with low-temperature fluid in a horizontal well. Firstly, three fracture areas are prefabricated by using a perforating gun, and then a water pressure plugging device is filled by injecting water through a water pipe, thereby forming three sealed fracturing chambers; The three sealed fracturing chambers are filled with supercooled water, and finally the low-temperature fluid flows through the internally threaded heat exchange tubes and externally threaded heat exchange tubes in the three sealed fracturing chambers in sequence. When the low temperature fluid flows through each sealed fracturing chamber, each The supercooled water in the sealed fracturing chamber exchanges heat with the low-temperature fluid. At this time, the temperature of the supercooled water drops rapidly, turning the water phase into ice and increasing its volume, so that each sealed fracturing chamber is fractured by using its ice swelling force, and the continuous After a certain period of time, stop and cycle for many times to complete the process of supercooled water ice expansion fracturing; not only can effectively ensure the fracturing effect of coal and rock mass and reduce the high pressure required for hydraulic fracturing, but also because the supercooled water has no chemical agents added, so It will not pollute the surrounding environment after leakage.

The invention discloses a method for grading fracturing by low-temperature fluid in upward drilling. Firstly, three fracture areas are prefabricated by using a perforating gun, and then water is injected through a water pipe to fill up a hydraulic occluder, thereby forming three sealed fracturing chambers. ; Fill the three sealed fracturing chambers with supercooled water in turn, and finally the low-temperature fluid flows through the internal threaded heat exchange tubes and external threaded heat exchange tubes in the three sealed fracturing chambers in turn, and the low temperature fluid flows through each sealed fracturing chamber At this time, the supercooled water in each sealed fracturing chamber exchanges heat with the low-temperature fluid. At this time, the temperature of the supercooled water drops rapidly, making the water phase change into ice and increasing in volume, so that the ice expansion force is used to compress each sealed fracturing chamber. After a certain period of time, stop and cycle multiple times to complete the process of supercooled water ice swelling and fracturing; not only can effectively ensure the fracturing effect of coal and rock mass and reduce the high pressure required for hydraulic fracturing, but also because the supercooled water has no chemical agents Added, so there will be no pollution to the surrounding environment after leakage.

The invention discloses a negative pressure retreat type injecting low-temperature fluid staged circulation fracturing method. Firstly, three crack areas are prefabricated by using a perforating gun, and then the rubber plugging device is filled with water through a water pipe, thereby forming three sealing pressure zones. The three sealed fracturing chambers are placed in a negative pressure state through the air pump, and low-temperature fluid is injected into the three sealed fracturing chambers. The low-temperature fluid fills each sealed fracturing chamber in turn. The fracture area is subjected to cold impact fracturing, and as the low-temperature fluid in the sealed fracturing chamber is heated and gasified by the geothermal heat, after the internal pressure of the low-temperature fluid exhaust pipe exceeds the opening threshold of the safety pressure relief valve, the safety pressure relief valve opens to discharge the gas, thereby The air pressure inside the low-temperature fluid exhaust pipe and each sealed fracturing chamber is reduced, and the cycle is repeated, and the gas expansion force fracturing is performed on each sealed fracturing chamber multiple times. It can effectively ensure the rapid injection of low-temperature fluid and the cracking effect on coal and rock mass, and will not cause pollution to the surrounding environment.

The invention discloses a method for intensifying heat exchange and fracturing of horizontal wells with low temperature fluid. A perforating gun is used to set up multiple fracture areas, and water is injected through a water injection pipe to fill up a hydraulic plug to form a sealed fracturing chamber. The room is filled with supercooled water, and then low-temperature fluid is injected into the heat exchange section in the sealed fracturing chamber. The supercooled water exchanges heat with the low-temperature fluid through the heat exchange fins. Ice, after the phase change, the volume increases to use its ice expansion force to fracturing the sealed fracturing chamber. At the same time, after heat exchange, the low-temperature fluid will phase change to form gas, and the gas will pass through the gas discharge pipe and the well in turn under the influence of negative pressure. The annulus and the exhaust pipe are discharged, and the ice swelling and cracking process is completed after a period of time. Not only can it effectively ensure the fracturing effect of coal and rock mass and reduce the high pressure required for hydraulic fracturing, but also because no chemicals are added to the supercooled water, it will not pollute the surrounding environment after leakage.

The invention discloses a cleaning device for cauliflower vegetables for cleaning vegetables, and relates to the technical field of vegetable processing. The cauliflower vegetable cleaning device for cleaning vegetables includes a machine body. A feeding frame is inserted into the left side of the body, and the feeding frame communicates with the inner cavity of the body. A conveyor belt is installed laterally in the body, and the conveyor belt is located at Below the right side of the feeding frame, the right end of the conveyor belt is driven by a drive motor, and the drive motor is fixedly installed on the right side of the bottom of the body, and a cleaning box is arranged under the right side of the conveyor belt. The cauliflower vegetable cleaning device for cleaning vegetables uses the barb to fix the cauliflower on the conveyor belt, and the blade cuts off the root of the cauliflower. The effective cleaning of the inside of the cauliflower solves the problem that the existing cauliflower cleaning device cannot fully clean the inside of the cauliflower.