Automatic drainage device for marine engine steam-water separator and adjusting method
By designing an automatic drainage device including a water jet pipe, a float ball, a ball plug and a ball plug opening and closing lever, the problem that the pressure of the charge air in the soda separator exceeds the normal use pressure of the automatic drainage device when the power of the marine engine increases, the versatility and use safety of the automatic drainage device are realized, and the manufacturing cost is reduced.
Patent Information
- Application Number
- CN202510425689.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-06-20
AI Technical Summary
When the power of existing marine engines increases, the pressure of the charge air in the soda separator exceeds the normal use pressure of the automatic drainage device, resulting in the need to reconfigure a new automatic drainage device, which increases manufacturing costs.
An automatic drainage device including a water jet pipe, a float ball, a ball plug and a ball plug opening and closing lever is designed. By adjusting the gap between the ball plug and the spherical pit, the automatic discharge of condensate water is realized, and the opening pressure of the water jet pipe is adjusted through the coordination of the screw plug and the pressure spring.
The versatility and safety of automatic drainage devices are achieved when the power of marine engines increases, avoiding the need to replace the drainage devices, reducing manufacturing costs, and ensuring the working reliability of the engine.
Smart Images
Figure CN120175994A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a marine engine, in particular to a device and an adjustment method for facilitating the automatic discharge of condensed water in a steam-water separator, belonging to the technical field of internal combustion engines. Background Art
[0002] At present, large marine engines with a single-engine power of 500 kW or more all adopt the combination of intake supercharging and intake cooling to improve the combustion efficiency, increase the engine power, reduce fuel consumption and improve emissions. When the marine engine is operating normally, the exhaust gas discharged from the cylinder drives the supercharger to rotate at a high speed, supercharges the incoming air and cools it through an air cooler to increase the intake air density, and then transports it to the cylinder for combustion use. The pressure of the supercharged air is usually 0.2 - 0.5 Mpa. During the intake process, on the one hand, the supercharged air contains a large amount of moisture, and it is easy to form more condensed water after being cooled by the air cooler. The condensed water accumulated in the steam-water separator needs to be discharged in time, otherwise it will affect the normal use of the air cooler and the normal operation of the engine, and it is also necessary to ensure that the supercharged air in the air cooler box is not leaked. On the other hand, due to the different models and powers of marine engines, the air pressure in the steam-water separator of the engine is also inconsistent. The existing marine engines usually use an automatic drainage device that can meet the maximum normal use air pressure. When the power of the marine engine increases, the supercharged air pressure in the steam-water separator exceeds the normal use pressure of the automatic drainage device, and a new automatic drainage device needs to be reconfigured, which increases the manufacturing cost of the marine engine. Summary of the Invention
[0003] The purpose of the present invention is to provide an automatic drainage device and an adjustment method for the steam-water separator of a marine engine that are convenient to operate, have good versatility and are safe to use.
[0004] The present invention is achieved through the following technical solutions:
[0005] An automatic drainage device for a marine engine steam-water separator, comprising a steam-water separator composed of an upper tank body and a lower tank body. A sealing gasket is embedded between the docking edges of the upper tank body and the lower tank body, and the upper tank body and the lower tank body are fixedly connected into one body by a pair of V-shaped groove hoop clamps and two groups of bolt-nut assemblies crimped on the outer edges of the docking edges. The top of the upper tank body is shrunk and welded to the top pipe, a connecting flange is welded to the top of the top pipe, the bottom of the condensate drain pipe is welded to the lower end flange, an upper sealing gasket is also provided between the connecting flange and the lower end flange, and they are fixedly connected into one body by several groups of vertical connecting bolt-nut assemblies. Several layers of steam-water separation and condensation plates are arranged inside the top of the upper tank body, and a water level observation window is arranged on one side of the lower tank body. On the other side of the lower part of the lower tank body, a reducing pipe with a larger inner diameter and a smaller outer diameter is welded, the axis of the reducing pipe is perpendicular to the axis of the steam-water separator, and a support block is welded inside the small end of the reducing pipe. The automatic drainage mechanism of the steam-water separator includes a water spray pipe, a floating ball, a ball plug, and a ball plug opening and closing lever. One end of the water spray pipe is located inside the lower part of the lower tank body, the other end of the water spray pipe passes through the central hole of the support block and is fixed in the support block by a fastening nut, and the middle part of the water spray pipe and the central hole of the support block are sealed by an O-ring. The other end of the water spray pipe is provided with a central water spray blind hole, the bottom of the central water spray blind hole communicates with one end of a transverse hole, one end of the transverse hole communicates with a spherical concave pit on the outer edge of the other end of the water spray pipe, and the upper side of the ball plug is adjacent to the spherical concave pit. The radius of curvature of the spherical concave pit matches the radius of curvature of the ball plug, the lower side of the ball plug is fixed to one end of the ball plug opening and closing lever by a stud, and the other end of the ball plug opening and closing lever is hinged to the lower end of the support rod on the lower side of the floating ball. A U-shaped slider is clamped on the lower side of the middle part of the ball plug opening and closing lever with the opening facing upwards, and a locking screw is screwed on one side of the U-shaped slider. The upper end of the water spray amount adjusting mechanism is hinged to one end of the water spray pipe, and the lower end of the water spray amount adjusting mechanism is respectively hinged to both sides of the U-shaped slider. The water spray opening pressure adjusting mechanism is vertically arranged on one end of the water spray pipe.
[0006] The object of the present invention can also be further achieved by the following technical measures.
[0007] Further, the water spray pipe anti-rotation pin is located on the upper side of the middle part of the water spray pipe, and one end of the water spray pipe anti-rotation pin is fixed in the side of the support block facing the floating ball; the water spray pipe anti-rotation pin seat is welded and fixed on the upper side of the middle part of the water spray pipe, and the other end of the water spray pipe anti-rotation pin is embedded in one side of the water spray pipe anti-rotation pin seat.
[0008] Further, the water spray amount adjusting mechanism includes a horizontal rod, a connecting rod, a grooved hanging rod, and a double-screw assembly. One end of the horizontal rod is fixed on the upper part of the end face of one end of the water spray pipe, and a hinge ear is also fixed at one end of the horizontal rod. The other end of the horizontal rod is hinged to the upper end of the connecting rod, the lower end of the connecting rod is hinged to the top end of the vertical rod of the grooved hanging rod, and the bent rods at both ends of the fork-shaped rod at the lower part of the grooved hanging rod are respectively hinged to both sides of the U-shaped slider; the upper end screw of the double-screw assembly is hinged to the hinge ear, and the end hook of the lower end screw of the double-screw assembly is hooked on the upper part of the vertical rod of the grooved hanging rod.
[0009] Furthermore, the water spray opening pressure regulating mechanism includes a screw plug, a compression spring, a stepped plunger, an anti-loosening spring and an adjusting stud. The stepped threaded through hole vertically penetrates one end of the water spray pipe, the stepped plunger is embedded in the stepped threaded through hole, the lower end of the stepped plunger extends out of the stepped threaded through hole, the screw plug is screwed into the upper end of the stepped threaded through hole, the compression spring is located between the lower side of the screw plug and the top surface of the stepped plunger, the anti-loosening spring is inserted into the hole at the lower end of the stepped plunger, the upper end of the adjusting stud is screwed into the lower end of the stepped plunger, and the top end of the lower end of the adjusting stud is located on the upper side of one end of the ball plug opening and closing lever, and is adjacent to the U-shaped slider and the ball plug respectively.
[0010] A method for adjusting an automatic drainage device of a steam-water separator of a marine engine includes the following corresponding adjustment steps under different working conditions:
[0011] In the following adjustment steps, you need to first loosen the fastening screws at both ends of a pair of V-groove clamps, remove the pair of V-groove clamps, separate the upper tank body and the lower tank body, and then perform the adjustment operation; after completing the adjustment operation, dock the upper tank body and the lower tank body, and then tighten the fastening screws at both ends of the pair of V-groove clamps to fix the upper tank body and the lower tank body into one piece through the pair of V-groove clamps;
[0012] 1) First loosen the locking screw on one side of the U-shaped slider, then tighten the screw plug, push the stepped plunger and the adjusting stud downward through the compression spring, and the top of the lower end of the adjusting stud moves downward to push the ball plug opening and closing lever to rotate clockwise around the U-shaped slider, so that the top surface of the ball plug is separated from the spherical pit, so that the initial gap between the two is δ1 = 2.0 ~ 3.0mm; finally tighten the locking screw to lock the position of the U-shaped slider on the ball plug opening and closing lever, and complete the adjustment of the ball plug closing and opening pressure before starting the marine engine;
[0013] 2) When the power of the marine engine increases or the ambient humidity increases, the condensed water level in the steam-water separator rises. To ensure that the condensed water level in the steam-water separator remains within the range of ±3mm, first loosen the locking screw on one side of the U-shaped slider, and then turn the bidirectional nut in the middle of the double-screw assembly counterclockwise. The double-screw assembly extends, and the end hook of the lower end screw of the double-screw assembly is separated from the upper part of the vertical rod of the grooved boom; then loosen the locking screw on one side of the U-shaped slider, and then move the U-shaped slider along the ball plug opening and closing lever toward the floating rod. The ball moves in the direction of the float, causing the float to move upward, increasing the gap between the ball plug and the spherical pit, thereby increasing the amount of condensate sprayed; then tighten the locking screw to lock the position of the U-shaped slider on the ball plug opening and closing lever; finally, turn the two-way nut clockwise, the double screw assembly is restored, and the end hook hooks the upper part of the vertical rod of the grooved hanger, thereby completing the adjustment of the condensate spray amount; in short, if you need to increase the amount of condensate discharged, move the slider toward the float, and if you need to reduce the amount of condensate discharged, move the slider toward the ball plug;
[0014] 3) When the pressurized air pressure in the steam-water separator cannot make the top surface of the ball plug press against the spherical pit after the marine engine is started, first loosen the screw plug on the water spray pipe, the elastic force of the compression spring deformed by pressure is reduced, the stepped plunger and the adjusting stud move upward, and the ball plug opening and closing lever rotates counterclockwise around the U-shaped slider, so that the top surface of the ball plug moves up and presses the spherical pit, thereby closing the horizontal hole to prevent the leakage of pressurized air, and completing the operation of closing the water spray pipe after the marine engine is started;
[0015] 4) During the normal operation of the marine engine, the working process of the water spray pipe in the steam-water separator is as follows:
[0016] 4.1) As the condensed water level in the steam-water separator continues to rise, the float rises accordingly, driving the ball plug opening and closing lever to rotate clockwise, and the ball plug moves down and leaves the spherical pit. Under the combined action of gravitational potential energy and pressurized air, the condensed water passes through the horizontal hole of the water spray pipe and the blind hole of the water spray and sprays out; because the condensed water level is higher than the spherical pit, only the condensed water is sprayed out, and the pressurized air will not be discharged. The air pressure in the steam-water separator is maintained at 0.2-0.5Mpa to ensure that the condensed water can be sprayed out smoothly;
[0017] 4.2) As the condensed water sprays out from the water spray pipe, the condensed water level in the steam-water separator drops, and the float drops accordingly, driving the ball plug opening and closing lever to rotate counterclockwise. Under the combined effect of the float ball gravity and the pressurized air pressure, the ball plug moves up to press the spherical pit to close the water spray pipe;
[0018] 4.3) Since the pressure of the pressurized air in the steam-water separator changes with the load of the marine engine, it is necessary to reserve a part of the buoyancy of the float to cope with the pressure change of the pressurized air. When the water level of the condensed water has submerged half of the float and the top surface of the ball plug is still against the spherical pit, tighten the screw plug in the lower tank body, the elastic force of the compression spring increases, the stepped plunger and the adjusting stud move downward, and the ball plug opening and closing lever rotates clockwise around the U-shaped slider, so that the ball plug reduces the pressing force on the spherical pit and is more convenient to open the water spray pipe to spray water.
[0019] The water spray opening pressure regulating mechanism of the present invention pushes the stepped plunger and the regulating stud up and down through the screw plug and the compression spring. When the regulating stud moves down and pushes the ball plug opening and closing lever to rotate clockwise around the U-shaped slider, the ball plug can be moved down to facilitate opening the water spray pipe to spray water. After the groove-shaped slider of the water volume regulating mechanism of the present invention is moved along the ball plug opening and closing lever toward the floating ball, the floating ball can be moved up, pulling the ball plug opening and closing lever to rotate clockwise, so that the gap between the ball plug and the spherical pit is increased, thereby increasing the injection amount of condensed water. The use of the present invention does not require the replacement of the drainage device in the steam-water separator, and the condensed water that increases in the steam-water separator due to the increase in the power of the marine engine can be discharged in time, thereby improving the versatility of the present invention, reducing the manufacturing cost of high-power marine engines, and ensuring the working reliability of high-power marine engines.
[0020] The advantages and features of the present invention will be illustrated and explained by the following non - restrictive description of the preferred embodiments, which are given by way of example only with reference to the accompanying drawings. Brief Description of the Drawings
[0021] Figure 1 It is a schematic diagram showing that the condensed water in the steam - water separator is at a high water level, the ball plug descends, and the spray pipe opens to spray water.
[0022] Figure 2 It is a schematic diagram showing that the condensed water in the steam - water separator is at a low water level, the ball plug ascends, and the spray pipe closes.
[0023] Figure 3 It is Figure 1 the left view of
[0024] Figure 4 It is Figure 1 the enlarged view from direction A of
[0025] Figure 5 It is Figure 2 the enlarged view of part Ⅰ of Detailed Description of the Preferred Embodiments
[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0027] As Figures 1 to 5 shown, the present invention includes a steam - water separator 1 composed of an upper tank body 11 and a lower tank body 12. A sealing gasket 13 is embedded between the docking edges 111 of the upper tank body 11 and the lower tank body 12, and the upper tank body 11 and the lower tank body 12 are fixedly connected into one body by a pair of V - shaped groove hoop clamps 14 crimped on the outer edge of the docking edge 111 and 2 groups of bolt - nuts 15.
[0028] The top of the upper tank body 11 is shrunk and welded to the top pipe 112, a connecting flange 113 is welded to the top of the top pipe 112, the bottom of the condensed water discharge pipe 3 is welded to the lower end flange 31. An upper sealing gasket 32 is also provided between the connecting flange 113 and the lower end flange 31, and they are fixedly connected into one body by several groups of vertical connecting bolt - nut groups 33. Three layers of steam - water separation and condensation plates 114 are provided inside the top of the upper tank body 11. When the pressurized air entering the steam - water separator 1 passes through the relatively low - temperature steam - water separation and condensation plates 114, the water droplets condensed from the steam - water separation and condensation plates 114 continuously drip into the lower tank body 12. Figure 1 A water level observation window 16 is provided on the left side of the middle and lower tank body 12. Figure 1 and Figure 2 A reducing pipe 121 with a larger inner diameter and a smaller outer diameter is welded to the lower left side of the lower tank body 12 in
[0029] The automatic drainage mechanism 2 of the steam separator includes a water spray pipe 21, a floating ball 22, a ball plug 23, and a ball plug opening and closing lever 24. The left end of the water spray pipe 21 is located inside the lower part of the lower tank body 12, and the right end passes through the central hole 171 of the support block and is fixed in the support block 13 by a fastening nut 25. An O-ring 26 is used to seal between the middle part of the water spray pipe 21 and the central hole 171 of the support block. The right end of the water spray pipe 21 is provided with a central water spray blind hole 211. The bottom of the central water spray blind hole 211 communicates with one end of a transverse hole 212, and the other end of the transverse hole 212 communicates with a spherical concave pit 213 on the outer edge of the left end of the water spray pipe 21. The upper side of the ball plug 23 is adjacent to the spherical concave pit 213, and the radius of curvature of the spherical concave pit 213 matches the radius of curvature of the ball plug 23, improving the sealing performance after the water spray pipe 21 is closed. The lower side of the ball plug 23 is fixed to the right end of the ball plug opening and closing lever 3 by a stud 231. The left end of the ball plug opening and closing lever 24 is hinged to the lower end of a support rod 221 on the lower side of the floating ball 22. A U-shaped slider 4 is stuck on the lower side of the middle part of the ball plug opening and closing lever 3 with its opening facing upward, and a locking screw 41 is screwed on one side of the U-shaped slider 4 so that the U-shaped slider 4 is fixed at the required position on the ball plug opening and closing lever 24.
[0030] The water spray pipe anti-rotation pin 231 is located on the upper side of the middle part of the water spray pipe 21, and the right end of the water spray pipe anti-rotation pin 231 is fixed in the left side of the support block 17 facing the floating ball 22. The water spray pipe anti-rotation pin seat 232 is welded and fixed on the upper side of the middle part of the water spray pipe 21, and the left end of the water spray pipe anti-rotation pin 231 is embedded in the right side of the water spray pipe anti-rotation pin seat 232.
[0031] As Figure 4 and Figure 5 As shown, the water spray amount adjusting mechanism 6 includes a horizontal rod 61, a connecting rod 62, a trough-shaped hanging rod 63, and a double-screw component 64. The right end of the horizontal rod 61 is fixed to the upper part of the left end face of the water spray pipe 21. A hinge ear 611 is also fixed to the right end of the horizontal rod 61. The left end of the horizontal rod 61 is hinged to the upper end of the connecting rod 62. The lower end of the connecting rod 62 is hinged to the top of the vertical rod 631 of the trough-shaped hanging rod 63. The bent rods 632 at both ends of the fork-shaped rod at the lower part of the trough-shaped hanging rod 63 are respectively hinged to both sides of the U-shaped slider 4. The upper screw 641 of the double-screw component 64 is hinged to the hinge ear 611, and the end hook ring 643 of the lower screw 642 of the double-screw component 64 is hooked on the upper part of the vertical rod 631 of the trough-shaped hanging rod 63.
[0032] The water spraying opening pressure regulating mechanism 7 is vertically arranged on the left end of the water spraying pipe 21, and it includes a plug 71, a compression spring 72, a stepped plunger 73, a lock spring 74 and an adjusting stud 75. A stepped threaded through hole 214 vertically penetrates through the left end of the water spraying pipe 21, and the stepped plunger 73 is embedded in the stepped threaded through hole 214. The lower end of the stepped plunger 73 extends out of the stepped threaded through hole 214. The plug 71 is screwed into the upper end of the stepped threaded through hole 214. The compression spring 72 is located between the lower side of the plug 71 and the top surface of the stepped plunger 73. When the compression spring 72 is compressed, the reset elastic force generated pushes the stepped plunger 73 and the adjusting stud 75 to move downward, thereby pushing the ball plug 23 to open the water spraying pipe 21. The lock spring 74 is inserted into the hole of the lower end of the stepped plunger 73. The upper end of the adjusting stud 75 is screwed into the lower end of the stepped plunger 73. The lower end tip 751 of the adjusting stud 75 is located on the upper side of the right end of the ball plug opening and closing lever 24, and is adjacent to the U-shaped slider 4 and the ball plug 23 respectively.
[0033] An adjustment method for an automatic drainage device of a marine engine steam-water separator includes corresponding adjustment steps for the following different working conditions:
[0034] In the following adjustment steps, it is necessary to first loosen the fastening screws 15 at both ends of a pair of V-groove clamps 14, remove the pair of V-groove clamps 14, separate the upper tank body 11 and the lower tank body 12, and then perform the adjustment operation. After the adjustment operation is completed, the upper tank body 11 and the lower tank body 12 are docked, and then the fastening screws 15 at both ends of the pair of V-groove clamps 14 are tightened, and the upper tank body 11 and the lower tank body 12 are fixedly connected into one body through the pair of V-groove clamps 14;
[0035] 1) First, loosen the locking screw 41 on one side of the U-shaped slider 4 to unlock the U-shaped slider 4. Then tighten the plug 71, and push the stepped plunger 73 and the adjusting stud 75 to move downward through the compression spring 72. The lower end tip 751 of the adjusting stud 75 moves downward to push the ball plug opening and closing lever 24 to rotate clockwise around the U-shaped slider 4. The top surface of the ball plug 23 is separated from the spherical pit 213, so that the initial gap δ1 between the two is 2.0 - 3.0 mm, ensuring that after the pressurized air enters the steam-water separator 1, the ball plug 23 closes the transverse hole 212 under the pressure of the pressurized air of 0.2 - 0.5 Mpa. Finally, tighten the locking screw 41 to lock the position of the U-shaped slider 4 on the ball plug opening and closing lever 24, and complete the adjustment of the closing and opening pressures of the ball plug 23 before the marine engine starts.
[0036] 2) When the power of the marine engine increases or the environmental humidity increases, the condensate level in the steam-water separator 1 rises. To ensure that the change in the condensate water level in the steam-water separator 1 remains within the range of ±3 mm (which can be read from the scale line of the observation window 16), first loosen the locking screw 41 on one side of the U-shaped slider 4, and then rotate the two-way nut 643 in the middle of the double-screw assembly 64 counterclockwise. The double-screw assembly 64 elongates, and the end hook 632 of the lower screw 642 of the double-screw assembly 64 disengages from the upper part of the vertical rod 631 of the grooved hanging rod 63. Then loosen the locking screw 41 on one side of the U-shaped slider 4, and then move the U-shaped slider 4 along the ball plug opening and closing lever 24 towards the float 22, that is, move it to the right, so that the float 22 moves upward, and the gap between the ball plug 23 and the spherical pit 213 increases, thereby increasing the injection volume of the condensate water. Then tighten the locking screw 41 to lock the position of the U-shaped slider 4 on the ball plug opening and closing lever 24. Finally, rotate the two-way nut 643 clockwise, and the double-screw assembly 64 returns to its original state, and the end hook 644 hooks the upper part of the vertical rod 631 of the grooved hanging rod 63, thus completing the adjustment of the condensate water injection volume. In short, if it is necessary to increase the discharge volume of the condensate water, move the slider 4 towards the float 22; if it is necessary to reduce the discharge volume of the condensate water, move the slider 4 towards the ball plug 23;
[0037] 3) When the pressure of the supercharged air in the air cooler box cannot make the top surface of the ball plug 23 press against the spherical pit 213 after the marine engine starts, loosen the plug 71 on the water spray pipe 21. The elastic force of the compression spring 72 deformed under pressure decreases, the stepped plunger 73 and the adjusting stud 75 move upward, and the ball plug opening and closing lever 24 rotates counterclockwise around the U-shaped slider 4, so that the top surface of the ball plug 23 moves upward to press against the spherical pit 213, thereby closing the transverse hole 212 to prevent the leakage of supercharged air and completing the operation of closing the water spray pipe 21 after the marine engine starts.
[0038] 4) During the normal operation of the marine engine, the working process of the water spray pipe 21 in the steam-water separator 1 is as follows:
[0039] 4.1) As Figure 1 shown, as the condensate water level in the steam-water separator 1 continuously rises, the float 22 rises accordingly, driving the ball plug opening and closing lever 24 to rotate clockwise. The ball plug 23 moves downward and disengages from the spherical pit 213. Under the combined action of the gravitational potential energy and the supercharged air of the condensate water, it passes through the transverse hole 212 and the water spray blind hole 211 of the water spray pipe 21 and sprays out. Since the condensate water level is higher than the spherical pit 213, only the condensate water sprays out, and the supercharged air will not be discharged. The air pressure in the steam-water separator 1 is maintained at 0.2 - 0.5 Mpa to ensure that the condensate water can be sprayed out smoothly.
[0040] 4.2) As Figure 2As shown, as the condensed water is ejected from the water spray pipe 21, the liquid level of the condensed water in the steam-water separator 1 drops, and the float ball 22 drops accordingly, driving the ball plug opening and closing lever 24 to rotate counterclockwise. Under the combined action of the gravity of the float ball 22 and the pressure of the pressurized air, the ball plug 23 moves upward to press against the spherical pit 213 to close the water spray pipe 21.
[0041] 4.3) Since the pressure of the pressurized air in the steam-water separator 1 changes with the load of the marine engine, it is necessary to reserve a part of the buoyancy of the float ball 22 to cope with the pressure change of the pressurized air. When the water level of the condensed water has submerged half of the float ball 22 and the top surface of the ball plug 23 still abuts against the spherical pit 213, tighten the plug 71 on the water spray pipe 21. The compression spring 72 is compressed and the elastic force increases. The stepped plunger 73 and the adjusting stud 75 move downward. The ball plug opening and closing lever 24 rotates clockwise around the U-shaped slider 4, so that the ball plug 23 reduces the pressing force on the spherical pit 213 and is more convenient to open the water spray pipe 21 for spraying water.
[0042] In addition to the above embodiments, the present invention may also have other embodiments. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.
Claims
1. An automatic drainage device for a steam-water separator of a marine engine, comprising a steam-water separator composed of an upper tank body and a lower tank body, wherein a sealing gasket is embedded between the butt edges of the upper tank body and the lower tank body, and the upper tank body and the lower tank body are fixedly connected as a whole by a pair of V-groove clamps crimped on the outer edges of the butt edges and two groups of bolts and nuts; the top of the upper tank body is welded to the top pipe after shrinkage, a connecting flange is welded to the top of the top pipe, the bottom of the condensate discharge pipe is welded to the lower end flange, an upper sealing gasket is also arranged between the connecting flange and the lower end flange, and they are fixedly connected as a whole by an array of vertical connecting bolt and nut groups; several layers of steam-water separation condensation plates are arranged in the top of the upper tank body, and a water level observation window is arranged on one side of the lower tank body; it is characterized in that A bypass reducer with a larger inner side and a smaller outer side is welded on the other side of the lower part of the lower tank body, the axis of the bypass reducer is perpendicular to the axis of the steam-water separator, and a support block is welded inside the small end of the bypass reducer; the automatic drainage mechanism of the steam-water separator includes a water spray pipe, a float, a ball plug and a ball plug opening and closing lever, one end of the water spray pipe is located in the lower part of the lower tank body, the other end of the water spray pipe passes through the center hole of the support block, is fixed in the support block by a fastening nut, and the middle part of the water spray pipe and the center hole of the support block are sealed by an O-ring; a central water spray blind hole is provided at the other end of the water spray pipe, the bottom of the central water spray blind hole is communicated with one end of the transverse hole, and one end of the transverse hole is connected to the spray pipe The spherical pit on the outer edge of the other end of the water pipe is connected, and the upper side of the ball plug is adjacent to the spherical pit, and the curvature radius of the spherical pit matches the curvature radius of the ball plug. The lower side of the ball plug is fixed to one end of the ball plug opening and closing lever by a double-headed stud, and the other end of the ball plug opening and closing lever is hinged to the lower end of the support rod on the lower side of the float; the U-shaped slider is stuck on the lower side of the middle part of the ball plug opening and closing lever with the opening facing upward, and the locking screw is screwed on one side of the U-shaped slider; the upper end of the water spray volume regulating mechanism is hinged to the end of one end of the water spray pipe, and the lower end of the water spray volume regulating mechanism is respectively hinged to the two sides of the U-shaped slider; the water spray opening pressure regulating mechanism is vertically arranged on one end of the water spray pipe.
2. The automatic drainage device for a steam-water separator of a marine engine according to claim 1, characterized in that: The water spray pipe anti-rotation pin is located on the upper middle side of the water spray pipe, and one end of the water spray pipe anti-rotation pin is fixed on the side of the support block facing the float; the water spray pipe anti-rotation pin seat is welded and fixed on the upper middle side of the water spray pipe, and the other end of the water spray pipe anti-rotation pin is embedded in one side of the water spray pipe anti-rotation pin seat.
3. The automatic drainage device for a steam-water separator of a marine engine according to claim 1, characterized in that: The water spray volume adjustment mechanism includes a horizontal rod, a connecting rod, a grooved hanger and a double screw assembly. One end of the horizontal rod is fixed to the upper end of the end surface of one end of the water spray pipe. A hinge ear is also fixed to one end of the horizontal rod. The other end of the horizontal rod is hinged to the upper end of the connecting rod. The lower end of the connecting rod is hinged to the top end of the vertical rod of the grooved hanger. The bent rods at both ends of the fork rod at the bottom of the grooved hanger are respectively hinged to the two sides of the U-shaped slider; the upper end screw of the double screw assembly is hinged to the hinge ear, and the end hook ring of the lower end screw of the double screw assembly is hooked on the upper part of the vertical rod of the grooved hanger.
4. The automatic drainage device for a steam-water separator of a marine engine according to claim 1, characterized in that: The water spray opening pressure regulating mechanism includes a screw plug, a compression spring, a stepped plunger, an anti-loosening spring and an adjusting stud. The stepped threaded through hole vertically penetrates one end of the water spray pipe, the stepped plunger is embedded in the stepped threaded through hole, the lower end of the stepped plunger extends out of the stepped threaded through hole, the screw plug is screwed in the upper end of the stepped threaded through hole, the compression spring is located between the lower side of the screw plug and the top surface of the stepped plunger, the anti-loosening spring is inserted into the channel at the lower end of the stepped plunger, the upper end of the adjusting stud is screwed into the lower end of the stepped plunger, and the top end of the lower end of the adjusting stud is located on the upper side of one end of the ball plug opening and closing lever, and is adjacent to the U-shaped slider and the ball plug respectively.
5. A method for adjusting the automatic drainage device of a steam-water separator of a marine engine according to any one of claims 1 to 4, characterized in that: Including the following corresponding adjustment steps for different working conditions: In the following adjustment steps, you need to first loosen the fastening screws at both ends of a pair of V-groove clamps, remove the pair of V-groove clamps, separate the upper tank body and the lower tank body, and then perform the adjustment operation; after completing the adjustment operation, dock the upper tank body and the lower tank body, and then tighten the fastening screws at both ends of the pair of V-groove clamps to fix the upper tank body and the lower tank body into one piece through the pair of V-groove clamps; 1) First loosen the locking screw on one side of the U-shaped slider, then tighten the screw plug, push the stepped plunger and the adjusting stud downward through the compression spring, and the top of the lower end of the adjusting stud moves downward to push the ball plug opening and closing lever to rotate clockwise around the U-shaped slider, so that the top surface of the ball plug is separated from the spherical pit, so that the initial gap between the two is δ1 = 2.0 ~ 3.0mm; finally, tighten the locking screw to lock the position of the U-shaped slider on the ball plug opening and closing lever, and complete the adjustment of the closing and opening pressure of the ball plug before starting the marine engine; 2) When the power of the marine engine increases or the ambient humidity increases, the condensed water level in the steam-water separator rises. To ensure that the condensed water level in the steam-water separator remains within the range of ±3mm, first loosen the locking screw on one side of the U-shaped slider, and then turn the bidirectional nut in the middle of the double-screw assembly counterclockwise. The double-screw assembly extends, and the end hook of the lower end screw of the double-screw assembly is separated from the upper part of the vertical rod of the grooved boom; then loosen the locking screw on one side of the U-shaped slider, and then move the U-shaped slider along the ball plug opening and closing lever toward the floating rod. The ball moves in the direction of the float, causing the float to move upward, increasing the gap between the ball plug and the spherical pit, thereby increasing the amount of condensate sprayed; then tighten the locking screw to lock the position of the U-shaped slider on the ball plug opening and closing lever; finally, turn the two-way nut clockwise, the double screw assembly is restored, and the end hook hooks the upper part of the vertical rod of the grooved hanger, thereby completing the adjustment of the condensate spray amount; in short, if you need to increase the amount of condensate discharged, move the slider toward the float, and if you need to reduce the amount of condensate discharged, move the slider toward the ball plug; 3) When the pressurized air pressure in the steam-water separator cannot make the top surface of the ball plug press against the spherical pit after the marine engine is started, first loosen the screw plug on the water spray pipe, the elastic force of the compression spring deformed by pressure is reduced, the stepped plunger and the adjusting stud move upward, and the ball plug opening and closing lever rotates counterclockwise around the U-shaped slider, so that the top surface of the ball plug moves up and presses the spherical pit, thereby closing the horizontal hole to prevent the leakage of pressurized air, and completing the operation of closing the water spray pipe after the marine engine is started; 4) During the normal operation of the marine engine, the working process of the water spray pipe in the steam-water separator is as follows: 4.1) As the condensed water level in the steam-water separator continues to rise, the float rises accordingly, driving the ball plug opening and closing lever to rotate clockwise, and the ball plug moves down and leaves the spherical pit. Under the combined action of gravitational potential energy and pressurized air, the condensed water passes through the horizontal hole of the water spray pipe and the blind hole of the water spray and sprays out; because the condensed water level is higher than the spherical pit, only the condensed water is sprayed out, and the pressurized air will not be discharged. The air pressure in the steam-water separator is maintained at 0.2-0.5Mpa to ensure that the condensed water can be sprayed out smoothly; 4.2) As the condensed water sprays out from the water spray pipe, the condensed water level in the steam-water separator drops, and the float drops accordingly, driving the ball plug opening and closing lever to rotate counterclockwise. Under the combined effect of the float ball gravity and the pressurized air pressure, the ball plug moves up to press the spherical pit to close the water spray pipe; 4.3) Since the pressure of the pressurized air in the steam-water separator changes with the load of the marine engine, it is necessary to reserve a part of the buoyancy of the float to cope with the pressure change of the pressurized air. When the water level of the condensed water has submerged half of the float and the top surface of the ball plug is still against the spherical pit, tighten the screw plug in the lower tank body, the elastic force of the compression spring increases, the stepped plunger and the adjusting stud move downward, and the ball plug opening and closing lever rotates clockwise around the U-shaped slider, so that the ball plug reduces the pressing force on the spherical pit and is more convenient to open the water spray pipe to spray water.