[0028] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments.
[0029] figure 1 It is a cross-sectional view of the oblique hole injector adapter device with adjustable spray direction of the present invention; figure 1 As shown, the oblique hole injector adapter device with adjustable injection direction of the present invention includes injector adapter 1, O-ring groove 2, adjustable gland 3, fuel injector 4, arc groove 5, cooling Water chamber cover 6, threaded hole 7, extension pipe 8, cooling water chamber 9, copper gasket 10 and fuel injection nozzle 11.
[0030] The injector adapter is machined with three sloping stepped holes, the apertures are 8mm, 22mm and 52mm respectively, which are matched with the cooling water chamber cover, the fuel injector and the nozzle respectively, leaving a proper amount of clearance in the middle. The stepped holes are used for installation. In the fuel injector 4, the inclined position of the fuel injector can make the sprayed oil jet be in the diameter direction of the visible window of the high-pressure container, and realize the maximum visualization of the sprayed oil jet. The inclination angle of the step hole is based on the nozzle hole and the fuel injection of the fuel injector 4. The included angle of the axis of the injector 4 is determined; the end face of the injector adapter 1 is provided with two threaded holes parallel to the injector 4 for installing the compression bolts of the injector 4.
[0031] The fuel injector adapter and the fuel injector are sealed with a copper gasket. The copper gasket is 16mm*8mm*1.5mm; there is an O-ring groove on the outside of the fuel injector adapter, which can be installed with 180mm*7mm fluoro rubber The O-ring groove 2 realizes the seal between the injector adapter and the high-pressure container.
[0032] The inclination angle of the cooling water cavity 9 is the same as the inclination angle of the fuel injector 4. The top of the cooling water cavity 9 is provided with an annular cooling water cavity cover 6, the inner and outer circular surfaces of the cooling water cavity cover 6 and the injector adapter 1 The end face of the oblique hole is welded and fixed to form a closed cooling space. The internal cooling water can block the heat transfer of the projectile to the injector, which has a good cooling effect; the cooling water cavity cover 6 is provided with two threads Hole 7, the lower threaded hole is the water inlet, the upper threaded hole is the drain hole, the lower part of the water inlet is connected to the extension pipe 8 through a quick-tight joint, and the impact force of the water through the water inlet enhances the cooling water The flow of cooling water in the cavity 9 prevents a large amount of steam from being generated at a dead point of water flow.
[0033] The nut of the compression bolt compresses the adjustable gland 3 and thereby compresses the fuel injector 4, the fuel injector 4 squeezes the copper gasket 10 to achieve sealing, and the compression bolt is adjustable in compression The gland 3 adjusts the nozzle direction of the fuel injector 4. The fuel injector adapter 1, the cooling water chamber cover 6, and the adjustable gland 3 are all made of 304 stainless steel. The compression bolts are two M8 high-strength bolts.
[0034] The cooling water cavity 9 is in the shape of a ring groove, wrapped around the injector, arranged on the outside of the injector 4 and wrapping one end of the injector 4, and there is a certain wall thickness between the injector and the injector. In the case of ensuring the strength and welding the cooling water cavity cover as thin as possible to enhance the cooling effect; the inner diameter of the cooling water cavity is 32mm, the groove width is 8mm, and the depth is 35.6mm. The depth of the water cavity should not be too deep, and at least the strength of the place should be guaranteed. Withstand the greatest pressure shock in the high-pressure vessel; the thickness of the cooling water chamber cover is 7mm, the inner diameter is slightly smaller than the inner diameter of the cooling water chamber, and the outer diameter is slightly larger than the outer diameter of the cooling water chamber, so that the two can be welded, and the cooling water chamber cover is opened with Two M6 threaded holes are connected to a 6mm*4mm water pipe through a M6-6 quick-tight joint; the threaded hole at the bottom right is the water inlet, and a 30mm extension pipe is connected below to pass the inlet water into the bottom of the water cavity to ensure cooling water The flow of circulation.
[0035] figure 2 Is a cross-sectional view of the high-pressure vessel of the present invention, such as figure 2 As shown, the angle between the axis of the injector and the centerline of the nozzle hole is 72°. When the inclination angle of the injector is 27° calculated by three-dimensional simulation, the sprayed oil jet can pass through the diameter direction of the visible window, and The position of the injection hole is close to the edge of the visible window, so as to maximize the length of the visible oil jet. At this time, the sprayed oil jet is 45° from the vertical; when setting the inclination angle of the injector, the oblique spray should also be considered. Whether the oiler and the adjustable gland interfere with the fixed screw cap or high-pressure vessel, and whether it is easy to place a wrench when tightening the compression bolt, so generally the angle cannot be set too large.
[0036] image 3 Is a three-dimensional schematic diagram of the fuel injector of the present invention, Figure 4 Is a three-dimensional schematic diagram of the adjustable gland of the present invention, such as Figure 3-4 As shown, a slot is provided in the middle of the adjustable gland 3 to hold the clamping part of the injector 4, and the top of the injector is matched with the slot of the adjustable gland to fix the circumferential position of the injector. There are arc grooves 5 on both sides of the card slot. The compression bolt of the fuel injector 4 passes through the arc groove 5 and is screwed into the threaded hole on the end surface of the injector adapter 1. The thickness of the adjustable gland is 10mm, which can support the pressing force of the compression bolt; the main body diameter of the injector is 19.30mm, the clamping part is 14mm, the width of the adjustable gland slot is 13.95mm, and the fuel injector The top of the slot is a circular arc, which can fix the injector at the center of the adjustable gland; the adjustable gland has two arc grooves of 100°, the groove width is 9mm, which can be worn The fuel injector is compressed by two M8 compression bolts to achieve sealing. The pressing bolt presses the adjustable gland 3 at any position of the arc groove 5 to realize the adjustment of the nozzle direction of the fuel injector.
[0037] The injector adapter 1 is detachable. Figure 5 with Image 6 The three-dimensional schematic diagrams of the injector adapter at two installation angles of the injector are respectively shown. The top of the injector is matched with the slot of the adjustable gland to fix the circumferential position of the injector. There are two arc grooves on both sides of the gland. The compression bolt of the fuel injector passes through the arc groove to compress the fuel injector. The compression bolt can be rotated to any position of the arc groove, The adjustment of the nozzle direction of the fuel injector is realized, so that the center lines of the different nozzle holes of the fuel injector can be in the vertical plane of the shooting light path direction.
[0038] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made on the basis of the present invention, which is obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention fall within the scope of the present invention.
