An electrically heated cylinder liner water preheater

Abstract

The application is suitable for the diesel engine technical field, and provides an electric heating cylinder liner water preheater, which comprises a preheating barrel, a water inlet pipe and a water outlet pipe are arranged on the preheating barrel, the water outlet pipe is communicated with the bottom wall of the preheating barrel through a water conveying pipe, and the preheating barrel further comprises: a first heating mechanism, the first heating mechanism comprises an electric heating pipe and a water passing box, an impeller is rotatably installed in the water passing box, the electric heating pipe is installed on the impeller, two conductive slip rings are arranged on the top wall of the preheating barrel, the top end of the electric heating pipe is connected with one conductive slip ring through a conductive sliding block respectively, and the preheating barrel further comprises a second heating mechanism, the second heating mechanism comprises a gas guide ring and an air inlet pipe, a gas guide groove is formed in the side wall of the gas guide ring, a plurality of nozzles are annularly installed on the gas guide ring, and the electric heating pipe is connected with the gas guide ring through a transmission rod. The device preheats the cooling water in a combination mode of electric heating and tail gas utilization, effectively reduces the energy consumption of the device, and is more energy-saving and environment-friendly.

Description

Technical Field

[0001] This invention belongs to the field of diesel engine technology, and particularly relates to an electrically heated cylinder liner water preheater. Background Technology

[0002] Traditional diesel engine cylinder liner water preheaters use steam heating. Water flows through the cylinder liner water inlet and into the water supply pipe, where steam is introduced to exchange heat with the flowing water, thus achieving the heating effect. However, steam heating requires the boiler to be turned on in advance, the boiler needs a certain preparation time to generate steam, and a steam generator must be provided, resulting in a large footprint and low efficiency.

[0003] While electric heating is highly efficient, it consumes a huge amount of electricity and is not suitable for marine applications. Therefore, a hybrid heating method is needed to improve the water preheating efficiency of diesel engine cylinder liners while reducing energy consumption. Summary of the Invention

[0004] The purpose of this invention is to provide an electrically heated cylinder liner water preheater, which aims to solve the problems mentioned in the background art.

[0005] This invention is implemented as follows: an electric heating cylinder liner water preheater includes a preheating tank. An inlet pipe and an outlet pipe are provided on the upper part of the side wall of the preheating tank, and the inlet pipe and outlet pipe are symmetrically installed on both sides of the preheating tank. The end of the outlet pipe furthest from the preheating tank is connected to the bottom wall of the preheating tank via a water supply pipe. A drain pipe is also provided on the side wall of the preheating tank. The invention further includes: A first heating mechanism includes an electric heating tube and a water passage box installed in a preheating tank. The inlet and outlet water pipes are interconnected through the water passage box. An impeller is rotatably installed in the water passage box, and the electric heating tube passes through the water passage box and is mounted on the impeller. The top of the electric heating tube penetrates the top wall of the preheating tank, and a sleeve shaft is installed in the area where the electric heating tube contacts the top wall of the preheating tank. The sleeve shaft is rotatably mounted on the top wall of the preheating tank. Two conductive slip rings are provided on the top wall of the preheating tank, and two conductive sliders are installed at the top of the electric heating tube. The two conductive sliders are slidably mounted on a conductive slip ring, and the conductive slip ring has a first groove that cooperates with the conductive slider. The second heating mechanism includes a guide ring rotatably mounted inside the side wall of the preheating barrel, and an intake pipe mounted on the side wall of the preheating barrel. The intake pipe is used to connect to the exhaust port of the diesel engine. A guide groove is provided on the side wall of the guide ring. The guide groove forms an annular guide cavity by cooperating with the inner wall of the preheating barrel. The intake pipe communicates with the annular guide cavity. Nozzles are arranged in a ring on the guide ring. A transmission rod is connected to the bottom of the electric heating tube and the transmission rod is mounted on the guide ring.

[0006] A further technical solution includes an exhaust assembly at the top of the preheating barrel for discharging the heat-exchanged gas from the preheating barrel. The exhaust assembly includes a mounting frame, on which a sliding rod is slidably mounted. A sealing block is connected to one end of the sliding rod near the top wall of the preheating barrel, and an exhaust hole matching the sealing block is provided on the top wall of the preheating barrel. A reciprocating mechanism is also provided on the sleeve shaft, and the reciprocating mechanism is connected to the sliding rod. The reciprocating mechanism drives the sliding rod to slide up and down on the mounting frame by rotating synchronously with the sleeve shaft.

[0007] A further technical solution includes a reciprocating mechanism comprising a ball joint rod and a mounting shaft. The mounting shaft extends radially through the sleeve shaft. A first adjusting ring is sleeved on the sleeve shaft and rotatably mounted on the mounting shaft. The preheating barrel is also provided with an adjusting assembly that adjusts the inclination of the first adjusting ring by driving the first adjusting ring to rotate around the mounting shaft. A second sliding groove is provided on the side wall of the first adjusting ring, and the ball end of the ball joint rod is installed in the second sliding groove. The end of the ball joint rod away from the first adjusting ring is installed on a sliding rod.

[0008] In a further technical solution, the adjustment assembly includes a telescopic component installed on the top of the preheating tank and a second adjustment ring installed on the sleeve shaft. The second adjustment ring is located below the first adjustment ring, and the second adjustment ring and the sleeve shaft are connected by a sliding key. An adjustment connecting rod is rotatably installed on the second adjustment ring, and the end of the adjustment connecting rod away from the second adjustment ring is rotatably installed at the bottom of the first adjustment ring. An adjustment block is connected to the movable end of the telescopic component, and the adjustment block is installed on the side wall of the second adjustment ring.

[0009] In a further technical solution, the telescopic component is an electric telescopic rod.

[0010] In a further technical solution, each of the nozzles is tilted towards the connection between the water supply pipe and the bottom wall of the preheating tank.

[0011] In a further technical solution, both the impeller and the sleeve shaft are made of heat-insulating material.

[0012] This invention provides an electric cylinder liner water preheater. In use, two conductive slip rings are connected to the positive and negative terminals of a power supply, respectively. Power is then supplied to the electric heating element via two conductive sliders, causing the element to heat up. Cooling water enters through the inlet pipe and is transported to the water box. The impact force of the water flow drives an impeller in the water box to rotate, which in turn drives the electric heating element to rotate synchronously. This process heats and agitates the cooling water in the preheating tank, resulting in more uniform heating. The cooling water flowing through the water box is then transported from the bottom of the preheating tank to its interior via a water supply pipe. Inside the preheating tank, the cooling water is heated by the electric heating element and then transported to the diesel engine cylinder liner through a drain pipe, thus completing the cooling water preheating process. During this process, the high-temperature exhaust gas generated by the diesel engine is transported to the annular air guide chamber through the intake pipe. The high-temperature exhaust gas in the annular air guide chamber is then blown into the preheating tank through a nozzle, preheating the cooling water that has just entered the preheating tank. Furthermore, the electric heating element drives the air guide ring to rotate synchronously via a transmission rod, allowing the airflow from the nozzle to mix with the cooling water, resulting in more efficient heat exchange of the exhaust gas and more uniform heating of the cooling water. This device achieves efficient preheating of cooling water, and by combining electric heating with exhaust gas utilization, it effectively reduces energy consumption, making it more energy-efficient and environmentally friendly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an electrically heated cylinder liner water preheater provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an electrically heated cylinder liner water preheater from another perspective, provided as an embodiment of the present invention. Figure 3 This is a schematic diagram of the internal structure of an electrically heated cylinder liner water preheater provided in an embodiment of the present invention; Figure 4 An electric heating cylinder liner water preheater provided in an embodiment of the present invention Figure 2 Enlarged view of point A in the middle; Figure 5 This is a partial structural diagram of the first heating mechanism in an electrically heated cylinder liner water preheater provided in an embodiment of the present invention; Figure 6 An electric heating cylinder liner water preheater provided in an embodiment of the present invention Figure 1 A structural schematic diagram of the enlarged view at point B in the middle; Figure 7 This is a schematic diagram of the structure of the sleeve shaft and the first adjusting ring in an electric heating cylinder liner water preheater provided in an embodiment of the present invention.

[0014] In the attached diagram: 1. Preheating tank; 11. Inlet pipe; 12. Outlet pipe; 13. Water supply pipe; 14. Drain pipe; 2. First heating mechanism; 21. Electric heating tube; 22. Water box; 23. Impeller; 24. Sleeve shaft; 25. Conductive slip ring; 26. Conductive slider; 27. First sliding groove; 3. Second heating mechanism; 31. Air inlet pipe; 32. Air guide ring; 33. Air guide groove; 34. Nozzle; 35. Transmission rod; 4. Exhaust assembly; 41. Mounting bracket; 42. Sliding rod; 43. Sealing block; 5. Reciprocating mechanism; 51. First adjusting ring; 52. Second sliding groove; 53. Ball head rod; 54. Second adjusting ring; 55. Adjusting connecting rod; 56. Telescopic component; 57. Adjusting block; 58. Mounting shaft. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0016] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0017] like Figure 1-5 As shown, an electric heating cylinder liner water preheater according to an embodiment of the present invention includes a preheating tank 1. An inlet pipe 11 and an outlet pipe 12 are provided on the upper part of the side wall of the preheating tank 1, and the inlet pipe 11 and outlet pipe 12 are symmetrically installed on both sides of the preheating tank 1. The end of the outlet pipe 12 away from the preheating tank 1 is connected to the bottom wall of the preheating tank 1 through a water supply pipe 13. A drain pipe 14 is also provided on the side wall of the preheating tank 1. The device further includes: A first heating mechanism 2 includes an electric heating tube 21 and a water passage box 22 installed in a preheating tank 1. The inlet pipe 11 and outlet pipe 12 are interconnected through the water passage box 22. An impeller 23 is rotatably installed in the water passage box 22. The electric heating tube 21 passes through the water passage box 22 and is mounted on the impeller 23. The top of the electric heating tube 21 penetrates the top wall of the preheating tank 1. A sleeve shaft 24 is installed in the area where the electric heating tube 21 contacts the top wall of the preheating tank 1. The sleeve shaft 24 is rotatably mounted on the top wall of the preheating tank 1. Two conductive slip rings 25 are provided on the top wall of the preheating tank 1. Two conductive sliders 26 are installed at the top of the electric heating tube 21. The two conductive sliders 26 are slidably mounted on a conductive slip ring 25, and the conductive slip ring 25 has a first groove 27 that cooperates with the conductive slider 26. The second heating mechanism 3 includes a guide ring 32 rotatably mounted inside the side wall of the preheating barrel 1, and an intake pipe 31 mounted on the side wall of the preheating barrel 1. The intake pipe 31 is used to connect to the exhaust port of the diesel engine. A guide groove 33 is provided on the side wall of the guide ring 32. The guide groove 33 forms an annular guide cavity by cooperating with the inner wall of the preheating barrel 1, and the intake pipe 31 communicates with the annular guide cavity. Nozzles 34 are arranged in a ring on the guide ring 32. A transmission rod 35 is connected to the bottom of the electric heating tube 21, and the transmission rod 35 is mounted on the guide ring 32.

[0018] In this embodiment of the invention, both the impeller 23 and the sleeve shaft 24 are made of heat-insulating material to prevent the electric heating tube 21 from damaging related components. During use, the two conductive slip rings 25 are connected to the positive and negative terminals of the power supply, respectively, and then power is supplied to the electric heating tube 21 through the two conductive sliders 26, causing the electric heating tube 21 to heat up. Cooling water enters from the inlet pipe 11 and is transported to the water box 22. The impact force of the water flow drives the impeller 23 in the water box 22 to rotate, which in turn drives the electric heating tube 21 to rotate synchronously. This heats the cooling water in the preheating tank 1 while simultaneously agitating it, resulting in more uniform heating. The cooling water flowing through the water box 22 is transported from the bottom of the preheating tank 1 to the inside of the preheating tank 1 through the water supply pipe 13. Inside the preheating tank 1, the cooling water is heated by the electric heating tube 21 and then transported to the diesel engine cylinder liner through the drain pipe 14, thus completing the cooling water preheating. During this process, the high-temperature exhaust gas generated by the diesel engine can be transported to the annular air guide chamber through the intake pipe 31. The high-temperature exhaust gas in the annular air guide chamber can be blown into the preheating tank 1 through the nozzle 34, thereby preheating the cooling water that has just entered the preheating tank 1. The electric heating tube 21 can drive the air guide ring 32 to rotate synchronously through the transmission rod 35, so that the airflow blown out from the nozzle 34 can mix with the cooling water, making the heat exchange of the exhaust gas more efficient and the heating of the cooling water more uniform.

[0019] Meanwhile, considering the impurities that may exist in the exhaust gas, the input exhaust gas can be purified in advance to reduce the impact of impurities in the exhaust gas on the cooling water.

[0020] like Figure 1 , 2As shown in Figures 4 and 6, in a preferred embodiment of the present invention, the top of the preheating tank 1 is further provided with an exhaust assembly 4 for discharging the heat-exchanged gas in the preheating tank 1. The exhaust assembly 4 includes a mounting frame 41, on which a sliding rod 42 is slidably mounted. One end of the sliding rod 42 near the top wall of the preheating tank 1 is connected to a sealing block 43, and the top wall of the preheating tank 1 is provided with an exhaust hole that matches the sealing block 43. A reciprocating mechanism 5 is also provided on the sleeve shaft 24, and the reciprocating mechanism 5 is connected to the sliding rod 42. The reciprocating mechanism 5 drives the sliding rod 42 to slide up and down on the mounting frame 41 by rotating synchronously with the sleeve shaft 24.

[0021] In this embodiment of the invention, during use, the sleeve shaft 24 can drive the sliding rod 42 to slide up and down on the mounting frame 41 through the reciprocating mechanism 5. The sliding rod 42 can drive the sealing block 43 to move synchronously, so that the sealing block 43 is intermittently separated from the exhaust hole, so that the heat-exchanged gas can be discharged from the exhaust hole. Moreover, the intermittent exhaust method can prolong the residence time of the gas in the preheating tank 1, thereby improving the heat exchange effect.

[0022] like Figure 6 and 7 As shown, in a preferred embodiment of the present invention, the reciprocating mechanism 5 includes a ball-end rod 53 and a mounting shaft 58. The mounting shaft 58 passes through the sleeve shaft 24 radially. A first adjusting ring 51 is sleeved on the sleeve shaft 24 and is rotatably mounted on the mounting shaft 58. The preheating tank 1 is also provided with an adjusting component that adjusts the inclination of the first adjusting ring 51 by driving the first adjusting ring 51 to rotate around the mounting shaft 58. A second sliding groove 52 is provided on the side wall of the first adjusting ring 51, and the ball end of the ball-end rod 53 is installed in the second sliding groove 52. The end of the ball-end rod 53 away from the first adjusting ring 51 is installed on the sliding rod 42.

[0023] In this embodiment of the invention, during use, the sleeve shaft 24 can drive the first adjusting ring 51 to rotate around the axis of the sleeve shaft 24 via the mounting shaft 58. During this process, the ball end of the ball head rod 53 will slide in the second sliding groove 52. When the first adjusting ring 51 is in a horizontal state, the ball head rod 53 will always remain at the same height position. At this time, the ball head rod 53 will not drive the sliding rod 42 to slide up and down, and the exhaust port is in a normally closed state, which is suitable for the initial state of the device. At this time, the input high-temperature exhaust gas is small, and the overall pressure inside the preheating tank 1 will not be too high. This state allows the exhaust gas to stay in the preheating tank 1, thereby allowing the exhaust gas to fully exchange heat with the cooling water in the preheating tank 1. As the exhaust gas increases, the adjustment component can drive the first adjustment ring 51 to rotate around the mounting shaft 58. At this time, the first adjustment ring 51 is in an inclined state. During the rotation of the first adjustment ring 51 with the sleeve shaft 24, since the ball end of the ball head rod 53 will always cooperate with the second sliding groove 52, the first adjustment ring 51 can drive the ball head rod 53 to slide up and down. The ball head rod 53 can drive the sealing block 43 to move synchronously through the sliding rod 42, so that the sealing block 43 is intermittently disengaged from the exhaust port, thereby intermittently discharging the exhaust gas.

[0024] like Figure 6 As shown, in a preferred embodiment of the present invention, the adjusting assembly includes a telescopic member 56 installed on the top of the preheating tank 1 and a second adjusting ring 54 installed on the sleeve shaft 24. The second adjusting ring 54 is located below the first adjusting ring 51, and the second adjusting ring 54 is connected to the sleeve shaft 24 by a sliding key. An adjusting connecting rod 55 is rotatably installed on the second adjusting ring 54, and the end of the adjusting connecting rod 55 away from the second adjusting ring 54 is rotatably installed on the bottom of the first adjusting ring 51. The movable end of the telescopic member 56 is connected to an adjusting block 57, and the adjusting block 57 is installed on the side wall of the second adjusting ring 54.

[0025] In this embodiment of the invention, the telescopic member 56 is an electric telescopic rod. In use, the telescopic member 56 can extend and retract along the axial direction of the sleeve shaft 24. The telescopic member 56 can drive the second adjusting ring 54 to slide up and down along the axial direction of the sleeve shaft 24 via the adjusting block 57. The second adjusting ring 54 can drive the first adjusting ring 51 to swing around the mounting shaft 58 via the adjusting connecting rod 55, thereby adjusting the inclination of the first adjusting ring 51. As the extension and retraction of the telescopic member 56 changes, the inclination of the first adjusting ring 51 will also change accordingly, thus changing the reciprocating distance of the sealing block 43. That is, the time it takes for the sealing block 43 to separate from the exhaust hole will also change, and the corresponding exhaust volume will also change. This can be flexibly adjusted according to the actual usage conditions.

[0026] like Figure 3As shown, in a preferred embodiment of the present invention, each of the nozzles 34 is tilted towards the connection between the water supply pipe 13 and the bottom wall of the preheating tank 1, so that the high-temperature exhaust gas discharged from the nozzle 34 will directly blow onto the cooling water that has just flowed into the preheating tank 1 from the water supply pipe 13, and the two will convect, thereby making the heat exchange between the exhaust gas and the cooling water faster and more complete.

[0027] Working principle: During use, the two conductive slip rings 25 are connected to the positive and negative terminals of the power supply, respectively, and then the two conductive sliders 26 supply power to the electric heating tube 21, causing the electric heating tube 21 to heat up. Cooling water enters from the inlet pipe 11 and is transported to the water box 22. The impact force of the water flow drives the impeller 23 in the water box 22 to rotate, which in turn drives the electric heating tube 21 to rotate synchronously. This heats the cooling water in the preheating tank 1 while also stirring it, resulting in more uniform heating. The cooling water flowing through the water box 22 is transported from the bottom of the preheating tank 1 to the inside of the preheating tank 1 through the water supply pipe 13. Inside the preheating tank 1, the cooling water is heated by the electric heating tube 21 and then transported to the diesel engine cylinder liner through the drain pipe 14, thus completing the preheating of the cooling water. During this process, the high-temperature exhaust gas generated by the diesel engine can be transported to the annular air guide chamber through the intake pipe 31. The high-temperature exhaust gas in the annular air guide chamber can be blown into the preheating tank 1 through the nozzle 34, thereby preheating the cooling water that has just entered the preheating tank 1. The electric heating tube 21 can drive the air guide ring 32 to rotate synchronously through the transmission rod 35, so that the airflow blown out from the nozzle 34 can mix with the cooling water, making the heat exchange of the exhaust gas more efficient and the heating of the cooling water more uniform.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric heating cylinder liner water preheater, comprising a preheating tank, wherein an inlet pipe and an outlet pipe are provided on the upper part of the side wall of the preheating tank, and the inlet pipe and the outlet pipe are symmetrically installed on both sides of the preheating tank; the end of the outlet pipe away from the preheating tank is connected to the bottom wall of the preheating tank through a water supply pipe; and a drain pipe is also provided on the side wall of the preheating tank, characterized in that, Also includes: A first heating mechanism includes an electric heating tube and a water passage box installed in a preheating tank. The inlet and outlet water pipes are interconnected through the water passage box. An impeller is rotatably installed in the water passage box, and the electric heating tube passes through the water passage box and is mounted on the impeller. The top of the electric heating tube penetrates the top wall of the preheating tank, and a sleeve shaft is installed in the area where the electric heating tube contacts the top wall of the preheating tank. The sleeve shaft is rotatably mounted on the top wall of the preheating tank. Two conductive slip rings are provided on the top wall of the preheating tank, and two conductive sliders are installed at the top of the electric heating tube. The two conductive sliders are slidably mounted on a conductive slip ring, and the conductive slip ring has a first groove that cooperates with the conductive slider. The second heating mechanism includes a guide ring rotatably mounted inside the side wall of the preheating barrel, and an intake pipe mounted on the side wall of the preheating barrel. The intake pipe is used to connect to the exhaust port of the diesel engine. A guide groove is provided on the side wall of the guide ring. The guide groove forms an annular guide cavity by cooperating with the inner wall of the preheating barrel. The intake pipe communicates with the annular guide cavity. Nozzles are arranged in a ring on the guide ring. A transmission rod is connected to the bottom of the electric heating tube and the transmission rod is mounted on the guide ring. The top of the preheating tank is also provided with an exhaust assembly for discharging the heat-exchanged gas in the preheating tank. The exhaust assembly includes a mounting frame, on which a sliding rod is slidably mounted. A sealing block is connected to one end of the sliding rod near the top wall of the preheating tank, and an exhaust hole matching the sealing block is provided on the top wall of the preheating tank. A reciprocating mechanism is also provided on the sleeve shaft, and the reciprocating mechanism is connected to the sliding rod. The reciprocating mechanism drives the sliding rod to slide up and down on the mounting frame by rotating synchronously with the sleeve shaft. The reciprocating mechanism includes a ball joint rod and a mounting shaft. The mounting shaft passes through the sleeve shaft radially. A first adjusting ring is sleeved on the sleeve shaft and is rotatably mounted on the mounting shaft. The preheating barrel is also provided with an adjusting component that adjusts the inclination of the first adjusting ring by driving the first adjusting ring to rotate around the mounting shaft. A second sliding groove is provided on the side wall of the first adjusting ring, and the ball end of the ball joint rod is installed in the second sliding groove. The end of the ball joint rod away from the first adjusting ring is installed on a sliding rod. The adjustment assembly includes a telescopic component installed on the top of the preheating tank and a second adjustment ring installed on the sleeve shaft. The second adjustment ring is located below the first adjustment ring and is connected to the sleeve shaft via a sliding key. An adjustment connecting rod is rotatably installed on the second adjustment ring, and the end of the adjustment connecting rod away from the second adjustment ring is rotatably installed at the bottom of the first adjustment ring. An adjustment block is connected to the movable end of the telescopic component, and the adjustment block is installed on the side wall of the second adjustment ring.

2. The electric heating cylinder liner water preheater according to claim 1, characterized in that, The telescopic component is an electric telescopic rod.

3. The electrically heated cylinder liner water preheater according to claim 1, characterized in that, Each of the nozzles is tilted towards the connection between the water supply pipe and the bottom wall of the preheating tank.

4. The electrically heated cylinder liner water preheater according to claim 1, characterized in that, Both the impeller and the shaft sleeve are made of heat-insulating material.

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