A marine engine intercooler condensate automatic drainage device

Abstract

The present application relates to the technical field of intercooler, and particularly relates to a marine engine intercooler condensate water automatic drainage device, which comprises an intercooler cavity, a collecting box, a water drain valve, an elastic member and a fixing member; the bottom of the collecting box is provided with an opening; the water drain valve comprises a hollow pipe body, a sealing part and a drainage part; the sealing part blocks the top end of the hollow pipe body; the drainage part is arranged on the side wall of the hollow pipe body and below the sealing part; the hollow pipe body passes through the opening and can produce relative displacement; through the interaction of the condensate water in the collecting box and the force of the elastic member, the collecting box is lowered to realize drainage through the hollow pipe body by the drainage part or the collecting box is raised to realize sealing by the sealing part; the present application realizes drainage and sealing through the interaction of the gravity of the condensate water and the supporting force of the elastic member, and ensures that effective drainage can be realized under the condition that the condensate water liquid level is unstable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intercoolers, in particular to an automatic condensate water discharge device for an intercooler of a marine engine. BACKGROUND

[0002] The statements herein are provided only to complement the background of the present application and are not necessarily prior art.

[0003] During the operation of a turbocharged engine, air is compressed by a supercharger and then enters the engine cylinder for combustion. During the compression process, the temperature of the air will rise. If the temperature of the intake air of the engine is too high, knock will occur in the engine, and severe knock will damage the engine. Therefore, an intercooler is needed to reduce the temperature of the high-temperature and high-pressure air after supercharging to the required intake air temperature of the engine. During this process, water vapor in the air will produce condensate water in the intercooler. If the environment has high humidity, a large amount of condensate water will be produced. If the condensate water cannot be discharged in time, water vapor will enter the cylinder along with the air, causing carbon deposition in the cylinder of the engine and affecting the combustion efficiency of the engine. If the condensate water contains salt in a marine environment, it will corrode the intercooler in a high-temperature and high-pressure environment, thereby reducing the efficiency of the intercooler.

[0004] To solve the above problems, currently, two automatic methods are mainly used, i.e., a float ball type automatic drain valve or an electromagnetic valve plus liquid level sensor type automatic drain device. However, due to the large fluctuation of a ship during navigation, the condensate water level of the float ball type automatic drain valve is unstable, which easily causes the float ball to be stuck and the automatic water discharge to fail. In addition, the condensate water level of the electromagnetic valve plus liquid level sensor type automatic drain device is also unstable, which also easily causes the automatic water discharge to fail. SUMMARY

[0005] The present application aims to provide an automatic condensate water discharge device for an intercooler of a marine engine to solve the problem in the prior art that the fluctuation of a ship causes the condensate water level to be unstable, thereby causing the automatic water discharge to fail. In order to achieve the above-mentioned purpose, the present application solves the problem by the following technical scheme:

[0006] The present application provides an automatic condensate water discharge device for an intercooler of a marine engine, which comprises an intercooler cavity with an intercooler built-in, a collection tank in communication with the bottom of the intercooler cavity, a drain valve arranged at the bottom of the collection tank, an elastic member supporting the collection tank, and a fixing member supporting the drain valve and supporting the elastic member in the opposite direction.

[0007] The bottom of the collecting box is provided with an opening, the drain valve comprises a hollow pipe body, a sealing part and a drainage part, the sealing part blocks the top end of the hollow pipe body, the drainage part is arranged on the side wall of the hollow pipe body and below the sealing part, the hollow pipe body penetrates through the opening and can be relatively displaced, through the interaction of the gravity of the condensed water in the collecting box and the supporting force of the elastic member, the collecting box is lowered to drain through the hollow pipe body by the drainage part or is raised to be sealed by the sealing part.

[0008] Further, the fixing member is a water storage tank covering the collecting box, the bottom of the water storage tank supports the hollow pipe body and reversely supports the elastic member, and a damping assembly is arranged between the inner wall of the water storage tank and the outer wall of the collecting box.

[0009] Further, the damping assembly comprises multiple layers of annular damping rubber pads arranged in gaps from top to bottom, and the space formed by the adjacent layers of the annular damping rubber pads is an open space.

[0010] Further, the inner side of each layer of the annular damping rubber pad is connected with the outer wall of the collecting box, and the outer side is connected with the inner wall of the water storage tank, and each layer of the annular damping rubber pad is provided with a notch.

[0011] Further, the hollow pipe body is provided with a sliding sealing part, and the sliding sealing part is in sliding sealing connection with the inner wall of the opening.

[0012] Further, the bottom end of the hollow pipe body is provided with a threaded part, and the threaded part is in threaded connection with the bottom of the water storage tank.

[0013] Further, the sealing part is in a disc structure, and a rubber sealing member is arranged at the bottom of the sealing part.

[0014] Further, the drainage part is a drainage hole and / or a drainage arc-shaped groove arranged on the side wall of the hollow pipe body.

[0015] Further, the elastic member is a spring.

[0016] Further, the outlet of the air outlet pipe of the intercooler cavity is higher than the inlet, bypass pipes connected with the high point and the low point of the air outlet pipe are arranged on the air outlet pipe, a deflector device with a deflector net is connected in the bypass pipes, and the deflector device is communicated with the collecting box through a pipeline.

[0017] The beneficial effects of the above-mentioned application are as follows:

[0018] (1) The condensate water drainage device of the present application is a mechanical structure, when the gravity of the condensate water in the collection box is greater than the supporting force of the elastic member, the collection box moves downward, the sealing part is separated from the collection box, and the condensate water is automatically discharged. When the gravity of the condensate water is less than the supporting force of the elastic member, the collection box moves upward, the sealing part is tightly combined with the collection box, sealing is realized, air leakage is prevented, and since the lifting of the collection box is realized by the interaction of the gravity of the condensate water and the supporting force of the elastic member, control by the condensate water level is avoided, therefore, in the case of unstable condensate water level caused by normal navigation of the ship, effective drainage and sealing can still be realized by the drainage device of the present application.

[0019] (2) The fixing member of the present application is a water storage tank, the water storage tank covers the collection box, and a damping assembly is arranged between the inner wall of the water storage tank and the outer wall of the collection box. By arranging the damping assembly, the adverse effects from the outside can be buffered, and the drainage device can still be used normally in the case that the ship is in an extremely complex environment, such as rolling, tilting, pitching, and heeling.

[0020] (3) The gas outlet of the gas outlet pipe of the present application is higher than the gas inlet, bypass pipes connecting the high point and the low point of the gas outlet pipe are arranged on the gas outlet pipe, and a baffling device is arranged in the bypass pipes. According to the principle that air with water vapor is heavier than ordinary air, air with more water vapor is diverted into the bypass pipes, water droplets are formed by the blocking of the baffling net in the baffling device, water vapor is prevented from entering the cylinder with air, carbon deposition in the cylinder of the engine is avoided, and the combustion efficiency of the engine is affected. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the description serve to explain the principles of the present application. It is to be understood that these drawings are only schematic and that they do not necessarily represent any particular aspect of the application. Furthermore, the drawings can be used to explain additional features and principles of the present application, which will be described below. The present application will now be described with reference to the attached drawings.

[0022] Figure 1 The overall structure of the drainage device of the present application is shown in the schematic diagram;

[0023] Figure 2 The structure of the water release valve in the drainage device of the present application is shown in the schematic diagram;

[0024] Figure 3 The sectional view of the water release valve in the drainage device of the present application is shown;

[0025] Figure 4 The working principle diagram of the water release valve in the drainage device of the present application is shown, wherein 4(a) is the closed state of the water release valve, and 4(b) is the open state of the water release valve.

[0026] In the diagram, 1 is the air outlet pipe, 2 is the baffle device, 3 is the bypass pipe, 4 is the intercooler chamber, 5 is the intercooler, 6 is the intercooler condensate, 7 is the annular shock-absorbing rubber pad, 8 is the water storage tank, 9 is the drain valve, 91 is the sealing part, 92 is the drain part, 93 is the sliding sealing part, 94 is the hollow tube body, 95 is the threaded part, 96 is the internal hexagonal hole, 10 is the spring, 11 is the air inlet pipe, 12 is the collection box, 13 is the drain pipe, 14 is the first pipe, and 15 is the second pipe. Detailed Implementation

[0027] The technical solution of a typical embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figures 1-3 As shown, this embodiment provides an automatic discharge device for condensate from a marine engine intercooler, including an intercooler cavity 4 with an internal intercooler 5, a collection box 12 communicating with the bottom of the intercooler cavity 4, a drain valve 9 located at the bottom of the collection box 12, an elastic member supporting the collection box 6, and a fixing member supporting the drain valve 9 and the opposite supporting elastic member.

[0029] The collection box 12 has an opening at the bottom. The drain valve 9 includes a hollow tube 94, a sealing part 91, and a drain part 92. The sealing part 91 blocks the top of the hollow tube 94. The drain part 92 is located on the side wall of the hollow tube 94 and below the sealing part 91. The hollow tube 94 passes through the opening and can generate relative displacement. Through the interaction between the gravity of the condensate in the collection box 12 and the supporting force of the elastic element, the collection box 12 can be lowered and drained through the hollow tube 94 by the drain part 92, or the collection box 12 can be raised and sealed by the sealing part 91.

[0030] In this embodiment, the intercooler 5 is disposed inside the intercooler cavity 4. High-temperature gas enters through the inlet of the intercooler cavity 4 via the inlet pipe 11, is cooled by the intercooler 5, and then discharged through the outlet of the intercooler cavity 4. The cooled compressed gas is then supplied to the cylinder (not shown in the figure) through the outlet pipe 1. Additionally, the collection box 12 is connected to the bottom of the intercooler cavity 4 via the first pipe 14, and the drain pipe 13 is connected to the outlet of the drain valve 9.

[0031] The condensate drainage device in this embodiment is a mechanical structure. The intercooler cavity 4 is connected to the collection tank 12, and an elastic element is provided at the lower part of the collection tank 12. When the weight of the condensate in the collection tank 12 is greater than the supporting force of the elastic element, the collection tank 12 moves downward, the sealing part 91 separates from the collection tank 12, and the condensate is automatically discharged. When the weight of the condensate is less than the supporting force of the elastic element, the collection tank 12 moves upward, and the sealing part 91 is tightly connected to the collection tank 12 to achieve a seal and prevent air leakage. Since the raising and lowering of the collection tank is achieved by the interaction of the weight of the condensate and the supporting force of the elastic element, it avoids relying on the condensate level for control. Therefore, even when the condensate level is unstable due to normal navigation of the ship, the drainage device of this embodiment can still achieve effective drainage and sealing.

[0032] It should be noted that when the condensate level is unstable due to normal ship navigation, existing float-type automatic drain valves or solenoid valves with liquid level sensors are also prone to drainage failure, mainly because both require high stability of the liquid level.

[0033] The hollow tube body 94 is provided with a sliding sealing part 93, which is slidably and sealingly connected to the inner wall of the opening. In this embodiment, the sliding sealing part 93 is formed by a groove and an O-ring. Of course, in other embodiments, other sliding sealing methods can also be used. It should be noted that the bottom of the collection box 12 should have a certain thickness so that the sliding sealing part 93 will not detach from the inner wall of the opening when the waterproof valve 9 is draining or sealing. This not only achieves double sealing (preventing air leakage) when the sealing part 91 is sealing, but also achieves single sealing (preventing intercooler condensate from entering the water storage tank) when the drainage part is draining.

[0034] The hollow tube body 94 has a threaded part 95 on the outer wall at the bottom end, which is threaded to the bottom of the water storage tank 8.

[0035] It is easy to understand that the elastic element should initially have a certain initial pressure, which can be achieved by tightening the threaded part 95. At the same time, the sealing part 91 is provided with an internal hexagonal hole 96 to facilitate the tightening of the drain valve 9.

[0036] The sealing part 91 is tightly attached to the inner wall of the bottom of the collecting tank 12 with a certain initial pressure, which ensures the sealing of the collecting tank 12 at the beginning. In this embodiment, the elastic member is preferably a spring 10, and of course other elastic members can be selected in other embodiments. In order to balance the force on the bottom of the collecting tank 12, the number of springs 10 should be multiple and should be uniformly arranged. The specification and number of springs 10 should be determined according to the volume of condensed water that the collecting tank 12 can bear. For example, in the design, the volume of condensed water cannot be greater than 1 / 4 of the volume of the collecting tank 12. At this time, the volume of condensed water is 1 / 4 of the volume of the collecting tank 12, which is converted into the gravity of the condensed water, and then the specification and number of springs 10 are selected to ensure that the design requirements are met.

[0037] The sealing part 91 is in a disc structure, and a rubber sealing member can be added to the bottom. It is not difficult to understand that the sealing part 91 can be a circular disc structure, an elliptical disc structure or a polygonal disc structure, and it should be considered that it can cover the opening provided at the bottom of the collecting tank 12. In order to better seal, a rubber sealing member such as a rubber ring, a rubber pad, etc. is provided at the bottom of the sealing part 91. In addition, a groove matched with the sealing part 91 can be provided at the opening of the bottom of the collecting tank 12.

[0038] The drainage part 92 is a drainage hole and / or a drainage arc-shaped groove provided on the side wall of the hollow pipe body 94. It should be noted that opening the drainage arc-shaped groove may reduce the strength of the hollow pipe body 94, but at the same time the drainage speed of the drainage arc-shaped groove is faster. In actual selection, one or both of them can be selected according to the design requirements, and the drainage hole is preferably provided.

[0039] The working principle of the drainage valve 9 is shown in Figure 4 When the gravity of the condensed water in the collecting tank 12 is greater than the supporting force of the elastic member, the collecting tank 12 moves downward, the sealing part 91 is separated from the collecting tank 12, and the condensed water is automatically drained, as shown in Figure 4 (b). When the gravity of the condensed water is less than the supporting force of the elastic member, the collecting tank 12 moves upward, the sealing part 91 is tightly combined with the collecting tank 12, as shown in Figure 4 (a).

[0040] When the ship is in an extremely complex environment, such as roll, heeling, pitch and trim, in order to ensure that the drainage device of the embodiment can still achieve effective drainage, the embodiment avoids this by using a damping method.

[0041] In this embodiment, the fixing member is a water storage tank 8 covering the collecting tank 12. The bottom of the water storage tank 8 supports the hollow pipe body 94 and reversely supports the elastic member. A damping assembly is provided between the inner wall of the water storage tank 8 and the outer wall of the collecting tank 12. It can be understood that the water storage tank 8 is fixed on the ship body, which ensures that it itself should be stable and fixed.

[0042] By setting the damping assembly, it can ensure that the drainage device can still be used normally in the case of the ship being in an extremely complex environment.

[0043] The damping assembly comprises a plurality of layers of annular damping rubber pads 7 arranged in gaps from top to bottom, and the space formed by adjacent layers of annular damping rubber pads 7 is an open space. It is ensured that the space formed by adjacent layers of annular damping rubber pads 7 is balanced when buffering the adverse effects of the outside world, thereby avoiding the influence of the pressure being too large or too small in a certain space on the buffering effect.

[0044] Preferably, the inner side of each layer of annular damping rubber pad 7 is connected with the outer wall of the collection box 12, and the outer side is connected with the inner wall of the water storage tank 8. Each layer of annular damping rubber pad 7 is provided with a notch, and the spaces formed by the layers are communicated through the notch, so as to ensure that the air pressure is consistent. At the same time, it can be seen that the inner side of the annular damping rubber pad 7 is connected with the outer wall of the collection box 12, and the outer side is connected with the inner wall of the water storage tank 8. This connection mode can make it work in the case of shaking, for example, when the collection box 12 shakes to the left, the left annular damping rubber pad 7 is pressed, and the right annular damping rubber pad 7 is pulled.

[0045] It can be understood that in other embodiments, the inner side or the outer side of the annular damping rubber pad 7 is fixed, although the air pressure of the space can be consistent, only one side works during the shaking process, and the buffering effect is poorer than when both sides work.

[0046] In order to make the intermediate cooling cavity 4 more easily gather condensed water, a concave surface is arranged at the bottom of the intermediate cooling cavity 4, and the first pipeline is connected at the lowest point of the concave surface, so as to ensure that the intermediate cooler condensate 6 can effectively flow out, avoid that the intermediate cooler condensate 6 cannot be completely discharged, and reduce the probability of the intermediate cooler condensate 6 melting into the intake air. In this embodiment, the concave surface adopts an arc surface, and in other embodiments, a conical surface or other structures with an inclination angle can also be used.

[0047] The outlet of the outlet pipe 1 of the intermediate cooler cavity 4 is higher than the inlet, and the bypass pipe 3 connecting the high point and the low point of the outlet pipe 1 is arranged on the outlet pipe 1. The bypass pipe 3 is connected with the baffle device 2 with a baffle net, and the baffle device 2 is communicated with the collection box 12 through a pipeline.

[0048] In this embodiment, the filtering device 2 is also provided with a one-way valve, which ensures that the airflow cannot return to the intermediate cooler cavity 4. The specific arrangement structure inside is prior art, and will not be described here.

[0049] The air with water vapor is heavier than common air, the air with more water is separated and enters the bypass pipe 3, the inertia of water vapor is larger than air, and water droplets are formed after encountering the baffle net, and the water droplets flow into the collecting box 12 below through the second pipeline 15. The water vapor is prevented from entering the cylinder with air, which causes carbon deposition in the cylinder of the engine and affects the combustion efficiency of the engine. The reason why the baffle device 2 is arranged in the bypass pipe 3 is that if the baffle device 2 is arranged in the air outlet pipe 1, the air entering the cylinder will be affected, and the normal work of the cylinder will be affected.

[0050] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the technical solutions of the present application, belongs to the protection scope of the technical solutions of the present application.

Claims

1. An automatic condensate draining device for a marine engine intercooler, characterized in that, It includes an intercooler cavity with a built-in intercooler, a collection box communicating with the bottom of the intercooler cavity, a drain valve located at the bottom of the collection box, an elastic member supporting the collection box, and a fixing member supporting the drain valve and the reverse supporting elastic member. The collection box has an opening at the bottom. The drain valve includes a hollow tube, a sealing part, and a drain part. The sealing part blocks the top of the hollow tube. The drain part is located on the side wall of the hollow tube and below the sealing part. The hollow tube passes through the opening and can generate relative displacement. Through the interaction of the gravity of the condensate in the collection box and the supporting force of the elastic element, the collection box can be lowered so that the drain part can drain water through the inside of the hollow tube, or the collection box can be raised so that the sealing part can seal it. The fixing element is a water storage tank covering the collection box. The bottom of the water storage tank supports the hollow tube and supports the elastic element in the opposite direction. A shock-absorbing component is provided between the inner wall of the water storage tank and the outer wall of the collection box. The shock-absorbing component includes multiple layers of annular shock-absorbing rubber pads arranged at intervals from top to bottom. The space formed by adjacent layers of annular shock-absorbing rubber pads is an open space. The inner side of each layer of annular shock-absorbing rubber pads is connected to the outer wall of the collection box, and its outer side is connected to the inner wall of the water storage tank. Each layer of annular shock-absorbing rubber pads has a notch.

2. The automatic condensate draining device for marine engine intercoolers as described in claim 1, characterized in that, The hollow tube body is provided with a sliding sealing part, which is slidably and sealingly connected to the inner wall of the opening.

3. The automatic condensate draining device for marine engine intercoolers as described in claim 2, characterized in that, The hollow tube body has a threaded part on the outer wall at the bottom end, which is threaded to the bottom of the water storage tank.

4. The automatic condensate draining device for marine engine intercoolers as described in claim 3, characterized in that, The sealing part is a disc-shaped structure with a rubber seal at the bottom.

5. The automatic condensate draining device for a marine engine intercooler as described in claim 4, characterized in that, The drainage section is a drainage hole and / or a drainage arc groove provided on the side wall of the hollow tube.

6. The automatic condensate draining device for marine engine intercoolers as described in claim 1, characterized in that, The elastic element is a spring.

7. An automatic condensate draining device for marine engine intercoolers as described in any one of claims 1-6, characterized in that, The outlet of the intercooler cavity is higher than the inlet of the air outlet. A bypass pipe is provided on the outlet pipe to connect its high point and low point respectively. A baffle device with a baffle screen is connected in the bypass pipe. The baffle device is connected to the collection box through a pipe.

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