Automatic drainage device for steam-water separator of marine engine

Abstract

The utility model discloses a marine engine steam-water separator automatic drainage device which comprises an upper tank body, a lower tank body and a steam-water separator automatic drainage mechanism, a plurality of layers of steam-water separation condensation plates are arranged in the top of the upper tank body, a bypass reducer pipe is welded on the other side of the lower portion of the lower tank body, and a supporting block is welded in the small end of the bypass reducer pipe. The automatic drainage mechanism of the steam-water separator comprises a water spraying pipe, a floating ball, a ball plug and a ball plug opening and closing lever, the upper end of a water spraying amount adjusting mechanism is hinged to one end of the water spraying pipe, and the lower end is hinged to the two sides of the U-shaped sliding block; the water spraying opening pressure adjusting mechanism is vertically arranged at one end of the water spraying pipe. The high-power marine engine is good in universality and low in manufacturing cost, and the working reliability of the high-power marine engine is ensured.

Description

Technical Field

[0001] This utility model relates to a marine engine, and more particularly to a device for automatically draining condensate from a steam-water separator, belonging to the field of internal combustion engine technology. Background Technology

[0002] Currently, large marine engines with a single-unit power of 500kW and above all employ a combination of intake turbocharging and intake cooling to improve combustion efficiency, increase engine power, reduce fuel consumption, and improve emissions. During normal operation, the exhaust gas from the cylinders drives the turbocharger to rotate at high speed, pressurizing the intake air and cooling it through an air cooler to increase intake air density before it is delivered to the cylinders for combustion. The pressurized air pressure is typically 0.2–0.5 MPa. During the intake process, on the one hand, the pressurized air contains a large amount of moisture, which easily forms a significant amount of condensate after cooling in the air cooler. This condensate accumulated in the steam-water separator needs to be removed promptly; otherwise, it will affect the normal operation of the air cooler and the engine. It is also necessary to ensure that the pressurized air in the air cooler housing does not leak. On the other hand, due to differences in marine engine models and power, the air pressure within the engine's steam-water separator also varies. Existing marine engines typically use automatic drainage devices that meet the maximum normal operating air pressure. When the power of a marine engine increases, the pressurized air pressure in the steam-water separator exceeds the normal operating pressure of the automatic drainage device, requiring the reconfiguration of a new automatic drainage device, which increases the manufacturing cost of the marine engine. Utility Model Content

[0003] The purpose of this invention is to provide an automatic drainage device for marine engine steam-water separators that is easy to operate, versatile, and safe to use.

[0004] This utility model is achieved through the following technical solution:

[0005] An automatic drainage device for a marine engine steam-water separator includes a steam-water separator composed of an upper tank and a lower tank. A sealing gasket is embedded between the mating edges of the upper and lower tanks, and the upper and lower tanks are fixedly connected as a single unit by a pair of V-groove clamps pressed onto the outer edges of the mating edges and two sets of bolts and nuts. The top of the upper tank is welded to a top pipe after shrinking, and a connecting flange is welded to the top of the top pipe. The bottom of the condensate drain pipe is welded to the lower flange, and an upper sealing gasket is also provided between the connecting flange and the lower flange. These are fixedly connected as a single unit by a set of vertical connecting bolts and nuts. Several layers of steam-water separation condensation plates are provided inside the top of the upper tank, and a water level observation window is provided on one side of the lower tank. A bypass reducer pipe with a larger inner diameter and a smaller outer diameter is welded to the other side of the lower tank. The axis of the bypass reducer pipe is perpendicular to the axis of the steam-water separator, and a support block is welded inside the smaller end of the bypass reducer pipe. The automatic drainage mechanism of the steam-water separator includes a spray pipe, a float, 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 tank body, and 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. 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 has a central blind spray hole, the bottom of which is connected to one end of a horizontal hole. One end of the horizontal hole is connected to a spherical recess on the outer edge of the other end of the water spray pipe. The upper side of the ball plug is adjacent to the spherical recess. The radius of curvature of the spherical recess is related to the radius of curvature of the ball plug. The ball plug is fixed to one end of the ball plug opening and closing lever by a double-ended 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 locked in the lower middle part of the ball plug opening and closing lever with its 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 adjustment mechanism is hinged to one end of the water spray pipe, and the lower end of the water spray volume adjustment mechanism is hinged to both sides of the U-shaped slider. The water spray opening pressure adjustment mechanism is vertically set on one end of the water spray pipe.

[0006] The objective of this utility model can also be achieved in one step through the following technical measures.

[0007] Furthermore, the anti-rotation pin of the water spray pipe is located on the upper side of the middle of the water spray pipe, and one end of the anti-rotation pin is fixed in the side of the support block facing the float; the anti-rotation pin seat of the water spray pipe is welded and fixed on the upper side of the middle of the water spray pipe, and the other end of the anti-rotation pin of the water spray pipe is embedded in one side of the anti-rotation pin seat of the water spray pipe.

[0008] Furthermore, the water spray volume adjustment mechanism includes a horizontal rod, a connecting rod, a grooved suspension rod, and a twin-screw assembly. One end of the horizontal rod is fixed to the upper part of one end face of the water spray pipe, and a hinge lug 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, and the lower end of the connecting rod is hinged to the top of the upright of the grooved suspension rod. The bent rods at both ends of the fork-shaped rod at the bottom of the grooved suspension rod are respectively hinged to both sides of the U-shaped slider. The upper screw of the twin-screw assembly is hinged to the hinge lug, and the hook at the end of the lower screw of the twin-screw assembly is hooked to the upper part of the upright of the grooved suspension rod.

[0009] Furthermore, the water spray opening pressure adjustment 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, with the lower end of the stepped plunger extending 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 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. The tip of the lower end of the adjusting stud is located on the upper side of one end of the ball plug opening / closing lever and is adjacent to the U-shaped slider and the ball plug, respectively.

[0010] The water spray opening pressure regulating mechanism of this utility model uses a screw plug and a pressure spring to push a stepped plunger and an adjusting screw to move up and down. When the adjusting screw moves down, it pushes the ball plug opening and closing lever to rotate clockwise around the U-shaped slider, which in turn moves the ball plug down to facilitate the opening of the water spray pipe. Moving the grooved slider of the water volume regulating mechanism of this utility model along the ball plug opening and closing lever towards the float causes the float to move up, pulling the ball plug opening and closing lever to rotate clockwise. This increases the gap between the ball plug and the spherical recess, thereby increasing the spray volume of condensate. Using this utility model eliminates the need to replace the drainage device inside the steam-water separator, allowing for timely drainage of the increased condensate in the steam-water separator due to the increased power of the marine engine. This improves the versatility of the utility model, reduces the manufacturing cost of high-power marine engines, and ensures the operational reliability of high-power marine engines.

[0011] The advantages and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing that the condensate in the steam-water separator is at a high water level, the ball plug descends, and the water spray pipe opens to spray water.

[0013] Figure 2 This is a schematic diagram showing that the condensate in the steam-water separator is at a low level, the ball plug rises and the water spray pipe closes;

[0014] Figure 3 yes Figure 1 The left view;

[0015] Figure 4 yes Figure 1 A magnified view from direction A;

[0016] Figure 5 yes Figure 2 Enlarged view of Part I. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-5 As shown, this utility model includes a gas-water separator 1 composed of an upper tank 11 and a lower tank 12. A sealing gasket 13 is embedded between the mating edges 111 of the upper tank 11 and the lower tank 12. The upper tank 11 and the lower tank 12 are fixedly connected into one unit by a pair of V-groove clamps 14 pressed onto the outer edge of the mating edges 111 and two sets of bolts and nuts 15.

[0019] After the top of the upper tank 11 contracts, it is welded to the top pipe 112. A connecting flange 113 is welded to the top of the top pipe 112. The bottom of the condensate drain pipe 3 is welded to the lower flange 31. An upper sealing gasket 32 ​​is also provided between the connecting flange 113 and the lower flange 31, and they are fixedly connected as a whole by an array of vertical connecting bolts and nuts 33. Three layers of steam-water separation condensing plates 114 are provided inside the top of the upper tank 11. When the pressurized air entering the steam-water separator 1 passes through the lower temperature steam-water separation condensing plates 114, the water droplets condensed from the steam-water separation condensing plates 114 continuously drip into the lower tank 12. Figure 1 A water level observation window 16 is provided on the left side of the lower tank 12. Figure 1 and Figure 2 The lower tank 12 has a bypass reducer pipe 121 with a larger inner diameter and a smaller outer diameter welded to the left side of the lower part. The axis of the bypass reducer pipe 121 is perpendicular to the axis of the steam-water separator 1. A support block 17 is welded inside the small end of the bypass reducer pipe 121. The bottom of the lower tank 12 is also equipped with a vent ball valve 5.

[0020] The automatic drainage mechanism 2 of the steam-water separator includes a spray pipe 21, a float 22, a ball plug 23, and a ball plug opening and closing lever 24. The left end of the spray pipe 21 is located inside the lower part of the lower tank 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. The middle part of the spray pipe 21 is sealed with the central hole 171 of the support block by an O-ring 26. The right end of the spray pipe 21 is provided with a central spray blind hole 211. The bottom of the central spray blind hole 211 is connected to one end of the horizontal hole 212, and the other end of the horizontal hole 212 is connected to the spherical recess 213 on the outer edge of the left end of the spray pipe 21. The upper side of the ball plug 23 is adjacent to the spherical recess 213. The radius of curvature of the spherical recess 213 matches the radius of curvature of the ball plug 23, which improves the sealing performance after the 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 double-ended stud 231. The left end of the ball plug opening and closing lever 24 is hinged to the lower end of the support rod 221 on the lower side of the float 22. The U-shaped slider 4 is locked with its opening facing upward on the lower side of the middle of the ball plug opening and closing lever 3. The locking screw 41 is screwed on one side of the U-shaped slider 4, so that the U-shaped slider 4 is fixed in the required position of the ball plug opening and closing lever 24.

[0021] The anti-rotation pin 231 of the water spray pipe is located on the upper side of the middle part of the water spray pipe 21, and the right end of the anti-rotation pin 231 is fixed to the left side of the support block 17 facing the float 22. The anti-rotation pin seat 232 of the water spray pipe is welded and fixed to the upper side of the middle part of the water spray pipe 21, and the left end of the anti-rotation pin 231 is embedded in the right side of the anti-rotation pin seat 232.

[0022] like Figure 4 and Figure 5 As shown, the water spray volume adjustment mechanism 6 includes a horizontal rod 61, a connecting rod 62, a channel-shaped suspension rod 63, and a twin-screw assembly 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 lug 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 upright rod 631 of the channel-shaped suspension rod 63. The bent rods 632 at both ends of the fork-shaped rod at the lower part of the channel-shaped suspension rod 63 are respectively hinged to both sides of the U-shaped slider 4. The upper screw 641 of the twin-screw assembly 64 is hinged to the hinge lug 611. The hook 643 at the end of the lower screw 642 of the twin-screw assembly 64 is located on the upper part of the upright rod 631 of the channel-shaped suspension rod 63.

[0023] The water spray opening pressure regulating mechanism 7 is vertically installed on the left end of the water spray pipe 21. It includes a screw plug 71, a compression spring 72, a stepped plunger 73, an anti-loosening spring 74, and an adjusting stud 75. The stepped threaded through hole 214 vertically penetrates the left end of the water spray pipe 21. The stepped plunger 73 is embedded in the stepped threaded through hole 214, and the lower end of the stepped plunger 73 extends out of the stepped threaded through hole 214. The screw 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 screw plug 71 and the top surface of the stepped plunger 73. When the compression spring 72 is compressed, the restoring elastic force generated pushes the stepped plunger 73 and the adjusting stud 75 downward, thereby pushing the ball plug 23 to open the water spray pipe 21. The anti-loosening spring 74 is inserted into the channel at the lower end of the stepped plunger 73, and the upper end of the adjusting stud 75 is screwed into the lower end of the stepped plunger 73. The tip 751 of the lower end of the adjusting stud 75 is located on the upper right side of the ball plug opening and closing lever 24, and is adjacent to the U-shaped slider 4 and the ball plug 23 respectively.

[0024] The working process of this utility model includes the following adjustment steps for different working conditions:

[0025] In each of the following adjustment steps, 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, and separate the upper tank 11 and the lower tank 12 before proceeding with the adjustment. After completing the adjustment, reconnect the upper tank 11 and the lower tank 12, and then tighten the fastening screws 15 at both ends of the pair of V-groove clamps 14 to fix the upper tank 11 and the lower tank 12 into a single unit using the pair of V-groove clamps 14.

[0026] 1) First, loosen the locking screw 41 on one side of the U-shaped slider 4 to unlock it. Then, tighten the plug 71. This will push the stepped plunger 73 and the adjusting stud 75 downwards via the compression spring 72. The lower tip 751 of the adjusting stud 75 will then push the ball plug opening / closing lever 24 to rotate clockwise around the U-shaped slider 4. The top surface of the ball plug 23 will disengage from the spherical recess 213, resulting in an initial gap δ1 of 2.0–3.0 mm. This ensures 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 at 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 / closing lever 24, thus completing the adjustment of the closing and opening pressure of the ball plug 23 before starting the marine engine.

[0027] 2) When the power of the marine engine increases or the ambient humidity increases, the condensate level in the steam-water separator 1 rises. To ensure that the condensate level change in the steam-water separator 1 is kept within ±3mm (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, then turn the double-ended nut 643 in the middle of the twin-screw assembly 64 counterclockwise. The twin-screw assembly 64 extends, and the end hook 632 of the lower screw 642 of the twin-screw assembly 64 disengages from the upper part of the upright 631 of the grooved 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 to the right along the ball plug opening and closing lever 24 towards the float 22, so that the float 22 moves upward, the gap between the ball plug 23 and the spherical recess 213 increases, thereby increasing the spray volume of condensate. 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, turn the double-ended nut 643 clockwise to restore the twin-screw assembly 64 to its original position. The end hook 644 then hooks onto the upper part of the upright 631 of the grooved rod 63, thereby completing the adjustment of the condensate spray volume. In short, if it is necessary to increase the condensate discharge volume, move the slider 4 towards the float 22; if it is necessary to decrease the condensate discharge volume, move the slider 4 towards the ball plug 23.

[0028] 3) When the pressurized air pressure in the air cooler box is insufficient to press the top surface of the ball plug 23 against the spherical recess 213 after the marine engine is started, loosen the screw plug 71 on the water spray pipe 21. The elastic force of the compression spring 72 under pressure deformation 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 up and presses against the spherical recess 213, thereby sealing the transverse hole 212, preventing pressurized air leakage, and completing the operation of closing the water spray pipe 21 after the marine engine is started.

[0029] 4) During normal operation of the marine engine, the working process of the water spray pipe 21 inside the steam-water separator 1 is as follows:

[0030] 4.1) As Figure 1As shown, as the condensate level in the steam-water separator 1 rises, the float 22 rises accordingly, causing the ball plug opening / closing lever 24 to rotate clockwise. The ball plug 23 moves down and disengages from the spherical recess 213. Under the combined action of gravitational potential energy and pressurized air, the condensate passes through the horizontal hole 212 and the blind spray hole 211 of the spray pipe 21 and is sprayed out. Since the condensate level is higher than the spherical recess 213, only condensate is sprayed out, and the pressurized air is not discharged. The steam-water separator 1 maintains a pressure of 0.2 to 0.5 MPa, ensuring that the condensate can be sprayed out smoothly.

[0031] 4.2) As Figure 2 As shown, as condensate is sprayed out from the spray pipe 21, the condensate level in the steam-water separator 1 drops, and the float 22 drops accordingly, causing the ball plug opening and closing lever 24 to rotate counterclockwise. Under the combined action of the gravity of the float 22 and the pressure of the pressurized air, the ball plug 23 moves up and presses against the spherical pit 213 to close the spray pipe 21.

[0032] 4.3) Since the pressure of the boosted air in the steam-water separator 1 changes with the load of the marine engine, it is necessary to reserve some buoyancy of the float 22 to cope with the pressure change of the boosted air. When the water level of the condensate has submerged half of the float 22 and the top surface of the ball plug 23 is still pressing against the spherical recess 213, tighten the screw plug 71 on the spray pipe 21. The compression spring 72 is compressed and the elastic force increases. The stepped plunger 73 and the adjusting screw 75 move down. 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 recess 213 and makes it easier to open the spray pipe 21 to spray water.

[0033] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. An automatic drainage device for a marine engine steam-water separator, comprising a steam-water separator consisting of an upper tank and a lower tank, wherein a sealing gasket is embedded between the mating edges of the upper and lower tanks, and the upper and lower tanks are fixedly connected as a whole by a pair of V-groove clamps pressed onto the outer edge of the mating edges and two sets of bolts and nuts; the top of the upper tank is welded to a top pipe after shrinking, a connecting flange is welded to the top of the top pipe, the bottom of the condensate drain pipe is welded to the lower flange, an upper sealing gasket is also provided between the connecting flange and the lower flange, and the two tanks are fixedly connected as a whole by a set of vertical connecting bolts and nuts; several layers of steam-water separation condensation plates are provided inside the top of the upper tank, and a water level observation window is provided on one side of the lower tank; characterized in that... A bypass reducer pipe with a larger inner diameter and a smaller outer diameter is welded to the other side of the lower tank body. The axis of the bypass reducer pipe is perpendicular to the axis of the steam-water separator. A support block is welded inside the smaller end of the bypass reducer pipe. The automatic drainage mechanism of the steam-water separator includes a spray pipe, a float, a ball plug, and a ball plug opening and closing lever. One end of the spray pipe is located inside the lower part of the lower tank body, and the other end of the spray pipe passes through the central hole of the support block and is fixed in the support block by a fastening nut. The middle part of the spray pipe is sealed with the central hole of the support block by an O-ring. The other end of the spray pipe is provided with a central spray blind hole. The bottom of the central spray blind hole is connected to one end of the horizontal hole, and one end of the horizontal hole is connected to the spray... The other end of the water pipe is connected to a spherical recess on its outer edge. The upper side of the ball plug is adjacent to the spherical recess, and the radius of curvature of the spherical recess 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 double-ended stud. 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 locked with its opening facing upwards in the lower middle part of the ball plug opening and closing lever, and the locking screw is screwed on one side of the U-shaped slider. The upper end of the water spray volume adjustment mechanism is hinged to one end of the water spray pipe, and the lower end of the water spray volume adjustment mechanism is hinged to both sides of the U-shaped slider. The water spray opening pressure adjustment mechanism is vertically set on one end of the water spray pipe.

2. The automatic drainage device for a marine engine steam-water separator as described in claim 1, characterized in that, The anti-rotation pin of the water spray pipe is located on the upper side of the middle of the water spray pipe. One end of the anti-rotation pin is fixed to the side of the support block facing the float. The anti-rotation pin seat of the water spray pipe is welded and fixed to the upper side of the middle of the water spray pipe. The other end of the anti-rotation pin is embedded in one side of the anti-rotation pin seat of the water spray pipe.

3. The automatic drainage device for a marine engine steam-water separator as described in claim 1, characterized in that, The water spray volume adjustment mechanism includes a horizontal rod, a connecting rod, a trough-shaped hanger, and a twin screw assembly. One end of the horizontal rod is fixed to the upper part of one end face of the water spray pipe, and a hinge lug 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, and the lower end of the connecting rod is hinged to the top of the upright of the trough-shaped hanger. The bent rods at both ends of the fork-shaped rod at the bottom of the trough-shaped hanger are respectively hinged to both sides of the U-shaped slider. The upper screw of the twin screw assembly is hinged to the hinge lug, and the hook at the end of the lower screw of the twin screw assembly is hooked to the upper part of the upright of the trough-shaped hanger.

4. The automatic drainage device for a marine engine steam-water separator as described in claim 1, characterized in that, The water spray opening pressure adjustment mechanism includes a screw plug, a compression spring, a stepped plunger, an anti-loosening spring, and an adjusting stud. A stepped threaded through-hole vertically penetrates one end of the water spray pipe. The stepped plunger is embedded in the stepped threaded through-hole, with the lower end of the stepped plunger extending 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 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. The tip of the lower end of the adjusting stud is located on the upper side of one end of the ball plug opening / closing lever and is adjacent to the U-shaped slider and the ball plug, respectively.

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