Waste heat utilization equipment, liquid tank equipment and engine equipment

Abstract

The utility model provides waste heat utilization equipment, liquid tank equipment and engine equipment, and relates to the technical field of waste heat utilization. According to the device, a recovery pipeline is installed outside a liquid tank, the recovery pipeline is wrapped with heat insulation cotton, and the recovery pipeline is used for recovering high-temperature exhaust gas generated in the operation process of engine equipment; the heating branch is installed inside the liquid tank, an air inlet of the heating branch is located at the bottom end of the liquid tank, and an air outlet of the heating branch is located at the top end of the liquid tank; an air inlet of the heating branch is communicated with an exhaust port of the recovery pipeline, so that high-temperature exhaust enters the heating branch through the recovery pipeline; the heating branch is used for heating liquid stored in the liquid tank through high-temperature exhaust. According to the equipment, the problem that waste gas heat generated in the combustion process cannot be fully utilized is solved.

Description

Technical Field

[0001] This application relates to the field of waste heat utilization technology, and in particular to a waste heat utilization device, a liquid tank device, and an engine device. Background Technology

[0002] At higher altitudes or latitudes, temperatures are lower, leading to cold-start issues for engines. Fuel heating devices are typically used to heat the engine coolant to enable the engine to start.

[0003] When a fuel heating device is used to heat engine coolant, it typically transfers the heat generated by combustion to the coolant through a highly efficient heat exchanger, ensuring the engine reaches the ideal preheating temperature before starting, thereby improving fuel efficiency and reducing wear. However, the exhaust gases produced by combustion are directly released into the air, causing environmental pollution and resulting in significant waste heat loss. Utility Model Content

[0004] This application provides a waste heat recovery device, a liquid tank device, and an engine device to solve the problem of insufficient utilization of the heat generated by the exhaust gas during the combustion process.

[0005] In a first aspect, this application provides a waste heat utilization device, which includes: a recovery pipeline and a heating pipeline;

[0006] The recovery pipeline is installed on the outside of the liquid tank and is wrapped with heat insulation cotton. The recovery pipeline is used to recover the high-temperature exhaust generated by the engine during operation.

[0007] The heating pipes are installed inside the liquid tank. The air inlet of the heating pipes is located at the bottom of the liquid tank, and the air outlet of the heating pipes is located at the top of the liquid tank.

[0008] The air inlet of the heating pipe is connected to the exhaust port of the recovery pipe so that the high-temperature exhaust gas can enter the heating pipe through the recovery pipe; the heating pipe is used to heat the liquid stored in the liquid tank through the high-temperature exhaust gas.

[0009] In one possible design, the heating piping includes an intake branch, multiple heating branches, and an exhaust branch;

[0010] The air inlet of the intake branch is connected to the exhaust outlet of the recovery pipeline;

[0011] Multiple heating branches are arranged horizontally in a matrix with multiple rows and at least one column;

[0012] The air inlet of each heating branch in the first row is connected to the exhaust port of the air intake branch, and the exhaust port of each heating branch in the last row is connected to the air inlet of the exhaust branch.

[0013] In one possible design, the heating piping also includes at least one straight branch, the number of which is the same as the number of columns of the multiple heating branches;

[0014] The number of rows of multiple heating branches is odd. The exhaust ports of the heating branches in the odd-numbered rows are all connected to the corresponding straight-through branches; the exhaust port of each straight-through branch is connected to the air inlet of the exhaust branch.

[0015] The target column is any row in at least one column of multiple heating branches; the target through branch is the through branch corresponding to the target column in at least one through branch.

[0016] The exhaust port of the heating branch in the first row of the target column is equipped with a branch switch;

[0017] When the branch switch is in the first position, the exhaust port of the heating branch in the first row of the target column is connected to the air inlet of the heating branch in the second row of the target column, and blocked from the target straight-through branch.

[0018] When the branch switch is in the second position, the exhaust port of the heating branch in the first row of the target column is blocked from the air inlet of the heating branch in the second row of the target column, and is connected to the target through branch.

[0019] In one possible design, when the number of rows of multiple heating branches is greater than four, the exhaust ports of the heating branches in the odd-numbered rows of the target column, excluding the first and last rows, are all equipped with branch switches.

[0020] When the temperature of the high-temperature exhaust gas is greater than the preset temperature, multiple branch switches of the target column are used to be placed in the first position one by one in order from bottom to top;

[0021] The number of branch switches in the first position among the multiple branch switches in the target column is positively correlated with the temperature of the high-temperature exhaust gas.

[0022] In one possible design, temperature sensors are installed at the exhaust ports of the heating branches in the odd-numbered rows of the target column, except for the last row.

[0023] Each temperature sensor is set with its own critical temperature; the critical temperature is not less than the preset temperature.

[0024] The target temperature sensor is any one of the multiple temperature sensors in the target array; when the temperature detected by the target temperature sensor is greater than its own critical temperature, the target temperature sensor is used to indicate that the corresponding branch switch is placed in the first position.

[0025] In one possible design, each heating branch includes a cylindrical tube wall and multiple rectangular fins mounted on the cylindrical tube wall.

[0026] The plane containing each rectangular fin passes through the axis of the cylindrical tube wall.

[0027] In one possible design, the engine equipment includes an exhaust pipe and a fuel heating device for burning fuel to heat the coolant in the engine, and also includes a dust collection box.

[0028] The first end of the dust collection box is provided with a first air inlet and a second air inlet. The first air inlet is connected to the first interface of the exhaust pipe, and the second air inlet is connected to the exhaust port of the fuel heating device.

[0029] The exhaust port of the heating pipe is connected to the second interface of the exhaust pipe, which is located behind the first interface of the exhaust pipe.

[0030] The second end of the dust collection box is designed to taper.

[0031] The exhaust port of the dust collection box is connected to the air inlet of the recycling pipeline, and the exhaust port of the dust collection box is located between the first end and the second end of the dust collection box.

[0032] In one possible design, the second end of the dust collection box is made of a transparent, high-temperature resistant material, and the second end of the dust collection box is detachably connected to the dust collection box.

[0033] Secondly, this application provides a liquid tank device, the liquid tank device comprising:

[0034] Liquid tank, and waste heat recovery equipment such as that described in the first aspect of the utility model, installed on the liquid tank;

[0035] The liquid stored in the tank is engine oil;

[0036] Engine fluids include engine oil, fuel, or hydraulic fluid.

[0037] Thirdly, this application provides an engine device, the engine device comprising:

[0038] Engine, exhaust pipe, fuel heating device, and liquid tank equipment as described in the second aspect of the utility model.

[0039] This application provides a waste heat recovery device, a liquid tank device, and an engine device. A recovery pipeline, wrapped with heat insulation cotton, is installed outside the liquid tank and is used to recover high-temperature exhaust gas generated during engine operation. A heating branch is installed inside the liquid tank, with its inlet at the bottom and its outlet at the top. The inlet of the heating branch connects to the outlet of the recovery pipeline, allowing the high-temperature exhaust gas to enter the heating branch through the recovery pipeline. The heating branch uses the high-temperature exhaust gas to heat the liquid stored in the liquid tank. This achieves the following technical effects: the recovery pipeline effectively captures waste heat from the exhaust gas and transfers this heat to the liquid in the tank that needs preheating through the heating branch; the combination of the recovery pipeline and the heating branch makes the entire waste heat recovery device more stable, allowing for the reuse of thermal energy, reducing dependence on fossil fuels, and significantly contributing to improved air quality; the combined design of the recovery pipeline and the heating branch achieves efficient and environmentally friendly waste heat recovery, improving energy utilization. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of a waste heat utilization device provided in an embodiment of this application;

[0042] Figure 2 A schematic diagram of the waste heat utilization equipment provided in the embodiments of this application;

[0043] Figure 3 A schematic diagram of the heating branch of the waste heat utilization equipment provided in the embodiments of this application;

[0044] Figure 4 A schematic diagram of a branch switch provided in an embodiment of this application;

[0045] Figure 5 A left view of one heating branch provided in real time for this application;

[0046] Figure 6 This is a schematic diagram of a dust collection box provided in an embodiment of this application.

[0047] Figure label:

[0048] 100 - Engine equipment; 110 - Engine; 120 - Exhaust pipe; 130 - Fuel heating device; 140 - Liquid tank equipment;

[0049] 200 - Waste heat recovery equipment; 210 - Dust collection box; 220 - Recovery pipeline; 230 - Heating pipeline;

[0050] 231-Intake branch; 232-Heating branch; 233-Straight-through branch; 234-Exhaust branch; 235-Branch switch; 236-Temperature sensor;

[0051] 2321 - Tube wall; 2322 - Rectangular fins;

[0052] 2101 - First air inlet; 2102 - Second air inlet; 2103 - Dust collection box exhaust port. Detailed Implementation

[0053] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0054] In the embodiments of this application, the terms "first" and "second" are used to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, nor do they necessarily imply difference. It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner. In the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more.

[0055] It should be noted that the phrase "at...time" in the embodiments of this application can refer to the instant at which a certain situation occurs, or to a period of time after the occurrence of a certain situation; the embodiments of this application do not specifically limit this. Furthermore, the waste heat utilization device provided in the embodiments of this application is merely an example, and the waste heat utilization device may include more or fewer components.

[0056] To facilitate a clear description of the technical solutions in the embodiments of this application, some terms and technologies involved in the embodiments of this application will be briefly introduced below:

[0057] Waste heat recovery equipment: Waste heat recovery equipment refers to devices used to recover and reuse waste heat generated by industrial processes, machinery, or other heat sources. These devices improve energy efficiency and reduce energy waste and environmental pollution by capturing heat that would otherwise be released into the environment and reusing it for applications requiring heating or converting it into other forms of energy (such as electricity).

[0058] Recovery pipeline: In this application, the recovery pipeline refers to the pipeline that transports the exhaust gas generated by the combustion of fuel oil in the fuel oil heating device to the liquid tank for heating the liquid.

[0059] Heating branch: In this application, heating branch refers to the pipeline that uses the waste gas collected by the recovery pipeline to heat the liquid in the liquid tank.

[0060] High-temperature exhaust: In this application, high-temperature exhaust refers to the exhaust gas emitted by engine equipment (exhaust pipe and fuel heating device) during operation.

[0061] Starting large machinery in cold environments is a common problem, especially for equipment that relies on internal combustion engines such as diesel engines. Low temperatures affect the performance of fuel, lubricating oil, and coolant, increasing starting resistance and potentially leading to starting failure or engine damage.

[0062] To address the difficulty of cold starting engines, fuel heaters are typically used to heat the engine coolant and other components, improving starting reliability, reducing wear during startup, and ensuring the entire system reaches the ideal preheating temperature. However, the exhaust gases from combustion are discharged into the air through the exhaust pipes, resulting in heat loss. Therefore, how to effectively utilize the exhaust gases and reduce heat loss is a significant challenge in the field of waste heat recovery technology.

[0063] Existing waste heat recovery equipment or devices mainly utilize heating plates or heat exchangers. However, when heating water using heating plates or devices, the heat is concentrated on the surface of the heating plate, easily leading to excessively high temperatures in some areas while other parts remain underheated. This uneven temperature distribution not only affects heating efficiency but can also damage the equipment. Heat exchangers can also utilize waste heat from flue gas, but introducing them may require upgrading the existing control system to ensure precise control and monitoring of various parameters.

[0064] Considering that fuel heaters are a common method for engine preheating, utilizing the combustion of liquid fuel to generate heat energy for preheating engine equipment, it is proposed to utilize the waste heat generated by the fuel heating device.

[0065] To solve the above technical problems, waste heat recovery equipment should realize the utilization of fuel exhaust gas to reduce heat loss.

[0066] Furthermore, waste heat recovery equipment should filter impurities in fuel exhaust gas to reduce sparks in the exhaust gas, lower the probability of combustion and explosion, and reduce environmental pollution.

[0067] Furthermore, waste heat recovery equipment should improve the utilization rate of waste gas to avoid heat waste caused by only utilizing waste heat once.

[0068] Based on this, this application provides a waste heat utilization device that can be used in the field of waste heat utilization technology, aiming to solve the problem of insufficient utilization of waste gas heat.

[0069] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0070] Figure 1 This is a schematic diagram illustrating a scenario of the waste heat utilization equipment provided in an embodiment of this application. It should be noted that... Figure 1 The examples shown are merely examples of scenarios in which the embodiments of this application can be applied, to help those skilled in the art understand the technical content of this application, but do not mean that the embodiments of this application cannot be used in other devices, systems, environments or scenarios.

[0071] like Figure 1 The diagram illustrates a scenario of a waste heat recovery device, including: an engine 110, an exhaust pipe 120, a fuel heating device 130, and a fuel tank 140 of an engine device 100; and a dust collection box 210, a recovery pipeline 220, and a heating pipeline 230 of the waste heat recovery device 200.

[0072] The internal structure of the engine device 100 is determined according to the actual situation, and the illustrated distribution is only an example. The exhaust pipe 120 of the engine device 100 is used to discharge the high-temperature exhaust gas emitted by the engine 110, and the exhaust pipe 120 has special treatment so that the high-temperature exhaust gas emitted by the engine 110 through the exhaust pipe 120 can enter the dust collection box 210; the fuel heating device 130 has a separate exhaust device, and the discharged high-temperature exhaust gas is transported to the dust collection box 210 through the exhaust device.

[0073] The exhaust gas discharged from the engine enters the dust collection box 210 of the waste heat utilization equipment 200 through its respective exhaust device. After being filtered, it enters the heating pipe 230 through the recovery pipe 220 to heat the liquid inside the liquid tank equipment 140, so as to realize the heat utilization of the exhaust gas.

[0074] The exhaust branch of the heating pipe 230 is connected to the outlet of the exhaust pipe 120, which is used to discharge the high-temperature exhaust after waste heat utilization through this channel, and the high-temperature exhaust after waste heat utilization will not enter the dust collection box 210 for reuse.

[0075] Figure 2 This is a schematic diagram of a waste heat utilization device provided in an embodiment of this application. Figure 1 Based on the scenario, the waste heat utilization equipment 200 is described in detail, such as... Figure 2 As shown, the waste heat recovery equipment 200 includes: a recovery pipeline and a heating pipeline;

[0076] The recovery pipeline is installed on the outside of the liquid tank and is wrapped with heat insulation cotton. The recovery pipeline is used to recover the high-temperature exhaust generated by the engine during operation.

[0077] The heating pipes are installed inside the liquid tank. The air inlet of the heating pipes is located at the bottom of the liquid tank, and the air outlet of the heating pipes is located at the top of the liquid tank.

[0078] The air inlet of the heating pipe is connected to the exhaust port of the recovery pipe so that the high-temperature exhaust gas can enter the heating pipe through the recovery pipe; the heating pipe is used to heat the liquid stored in the liquid tank through the high-temperature exhaust gas.

[0079] Specifically, high-temperature exhaust refers to the exhaust gas emitted by engine equipment.

[0080] Waste heat recovery equipment 200 includes recovery pipeline 220 and heating pipeline 230.

[0081] The recovery pipeline 220 is installed outside the liquid tank equipment to recover the gas discharged from the engine equipment 100 through the exhaust pipe 120 to the waste heat recovery equipment, so as to facilitate the utilization of the heat of the exhaust gas. The recovery pipeline 220 is wrapped with heat insulation cotton and other insulation materials to ensure that the heat loss of the exhaust gas is not serious, so as to facilitate the heat utilization.

[0082] A dust collection box 210 is installed at the first end of the recovery pipeline 220. One end of the dust collection box 210 adopts a tapered design. The tapered design reduces the probability of combustion and explosion due to potential sparks in the high-temperature exhaust. In addition, this design can screen carbon particles in the high-temperature exhaust to avoid the danger that carbon particles may cause to the recovery pipeline. The air inlet at the other end of the dust collection box 210 is used to transport the high-temperature exhaust that has been treated for carbon particles and sparks to the recovery pipeline 220.

[0083] Heating pipe 230 is installed inside liquid tank device 140. Heating pipe 230 includes an inlet branch, multiple heating branches, an exhaust branch, and a straight-through branch. The gas is transported to the inlet branch of the heating pipe via recovery pipe 220, enters the heating branch, and heats the liquid inside liquid tank device 140. The exhaust direction of the high-temperature exhaust is controlled by an internal temperature sensor and branch switches to make its heat utilization rate higher. Subsequently, the high-temperature exhaust enters the straight-through branch and the exhaust branch to be discharged.

[0084] The air inlet of the heating pipe is connected to the exhaust port of the recovery pipe 220 to form a passage, allowing high-temperature exhaust gas to enter and heat the liquid in the liquid tank of the liquid tank device 140.

[0085] This application provides a waste heat recovery device. A recovery pipeline is installed outside a liquid tank and wrapped with heat-insulating cotton. The recovery pipeline is used to recover high-temperature exhaust gas generated during engine operation. A heating branch is installed inside the liquid tank, with its inlet located at the bottom and its outlet at the top. The inlet of the heating branch connects to the outlet of the recovery pipeline, allowing the high-temperature exhaust gas to enter the heating branch through the recovery pipeline. The heating branch uses the high-temperature exhaust gas to heat the liquid stored in the liquid tank. This achieves the following technical effects: the recovery pipeline effectively captures waste heat from the exhaust gas and transfers this heat to the liquid in the tank that needs preheating through the heating branch; the combination of the recovery pipeline and the heating branch makes the entire waste heat recovery device more stable, allowing for the reuse of thermal energy, reducing dependence on fossil fuels, and significantly contributing to improved air quality; the combined design of the recovery pipeline and the heating branch achieves efficient and environmentally friendly waste heat recovery, improving energy utilization.

[0086] Figure 3 This is a schematic diagram of the heating branch of a waste heat recovery device provided in an embodiment of this application. This embodiment... Figure 2 Based on the embodiments, Figure 2 The area containing the heating pipes was partially magnified.

[0087] like Figure 3 As shown, the heating pipeline includes an intake branch, multiple heating branches, and an exhaust branch;

[0088] The air inlet of the intake branch is connected to the exhaust outlet of the recovery pipeline;

[0089] Multiple heating branches are arranged horizontally in a matrix with multiple rows and at least one column;

[0090] The air inlet of each heating branch in the first row is connected to the exhaust port of the air intake branch, and the exhaust port of each heating branch in the last row is connected to the air inlet of the exhaust branch.

[0091] Specifically Figure 2 The heating branch shown has 7 rows, which is only an example and does not mean that the heating branch in this application has only 7 rows.

[0092] The air inlet refers to the port through which the high-temperature exhaust gas first enters this section of the pipeline; the exhaust port refers to the port through which the high-temperature exhaust gas finally exits this section of the pipeline.

[0093] The heating pipe 230 includes an intake branch 231, multiple heating branches 232, and an exhaust branch 234.

[0094] The air inlet of the air intake branch 231 is connected to the exhaust port of the recovery pipe 220 to form a passage.

[0095] The number of heating branches 232 includes multiple branches arranged horizontally in a matrix of multiple rows. Each odd-numbered row of heating branches 232 is equipped with a temperature sensor and a branch switch at its exhaust port to improve the utilization rate of exhaust gas.

[0096] The heating branch in the first row is the heating branch closest to the air intake. The heating branch in the last row is the heating branch closest to the exhaust branch. The heating branch 232 in the first row is connected to the exhaust port of the air intake branch 231, forming a passage; the heating branch 232 in the last row is connected to the exhaust branch 234, which discharges the exhaust gas after waste heat utilization.

[0097] The technical effect of this application embodiment is that the heat utilization rate of the exhaust gas is improved by designing multiple heating branches.

[0098] In one possible design, the heating branch also includes at least one straight-through branch, and the number of the at least one straight-through branch is the same as the number of columns of the multiple heating branches;

[0099] The number of rows of multiple heating branches is odd. The exhaust ports of the heating branches in the odd-numbered rows are all connected to the corresponding straight-through branches; the exhaust port of each straight-through branch is connected to the air inlet of the exhaust branch.

[0100] The target column is any row in at least one column of multiple heating branches; the target through branch is the through branch corresponding to the target column in at least one through branch.

[0101] The exhaust port of the heating branch in the first row of the target column is equipped with a branch switch;

[0102] When the branch switch is in the first position, the exhaust port of the heating branch in the first row of the target column is connected to the air inlet of the heating branch in the second row of the target column, and blocked from the target straight-through branch.

[0103] When the branch switch is in the second position, the exhaust port of the heating branch in the first row of the target column is blocked from the air inlet of the heating branch in the second row of the target column, and is connected to the target through branch.

[0104] Specifically, such as Figure 3 As shown, the heating branch 232 also includes a straight-through branch 233, wherein the number of straight-through branches 233 is the same as the number of columns of the heating branch 232, that is, the heating branch 232 is a matrix distribution with one column, and the number of straight-through branches is one.

[0105] In each odd-numbered row, the exhaust port of the heating branch 232 is connected to the straight-through branch 233, allowing the liquid to be discharged through this heating branch and the straight-through branch. The number of heating branches 232 must be odd, so that the heating branches 232 in each odd-numbered row can heat the liquid and then discharge it through the straight-through branch 233 and the exhaust branch 234.

[0106] The first position means that the branch switch 235 is in the closed state. In this case, the high-temperature exhaust gas in this heating branch can only be connected to the air inlet of the next heating branch, and is not interconnected with the direct branch 233. The second position means that the branch switch 235 is in the open state. In this case, the heating branch is connected to the direct branch, and the high-temperature exhaust gas in this heating branch can enter the exhaust branch through the direct branch 233 to discharge the exhaust gas.

[0107] The target column refers to any row in the heating branch 232, and the exhaust port of the first row of the target column is equipped with a branch switch 235. When the branch switch 235 is in the closed state, the high-temperature exhaust gas in the heating branch of the target column enters the next heating branch to continue heating the liquid; when the branch switch 235 is in the open state, the high-temperature exhaust gas in the heating branch of the target column does not meet the standard for heat utilization of waste gas, and the waste gas is directly discharged through the exhaust port, the straight-through branch 233, and the exhaust branch 234.

[0108] The technical effect of this application embodiment is that the waste heat of high-temperature exhaust can be utilized through the design of the heating branch 232.

[0109] In one possible design, when the number of rows of multiple heating branches is greater than four, the exhaust ports of the heating branches in the odd-numbered rows of the target column, excluding the first and last rows, are all equipped with branch switches.

[0110] When the temperature of the high-temperature exhaust gas is greater than the preset temperature, multiple branch switches of the target column are used to be placed in the first position one by one in order from bottom to top;

[0111] The number of branch switches in the first position among the multiple branch switches in the target column is positively correlated with the temperature of the high-temperature exhaust gas.

[0112] Specifically, the air inlets of the odd-numbered rows of the heating branch 232 are all located in the direction that the air inlet branch 231 is close to; the air inlets of the even-numbered rows of the heating branch 232 are all connected to the exhaust port of the previous heating branch 232, and the exhaust ports of the even-numbered rows of the heating branch 232 are all connected to the air inlet of the next heating branch 232, so as to form a passage.

[0113] When the number of heating branches is greater than 4 rows, branch switches are installed in the odd-numbered rows of multiple heating branches 232, except for the last row of heating branches 232.

[0114] When the temperature of the high-temperature exhaust gas is higher than the preset temperature, the branch switches corresponding to the target column are all in the first position, so that the high-temperature exhaust gas heats the liquid.

[0115] As the high-temperature exhaust gas passes through multiple heating branches 232 sequentially, heating the liquid, the temperature of the high-temperature exhaust gas gradually decreases, and the position state of the branch switches changes with the temperature of the high-temperature exhaust gas. The higher the temperature of the high-temperature exhaust gas, the more branch switches are in the first position, until the temperature of the high-temperature exhaust gas no longer reaches the preset temperature.

[0116] The technical effect provided by this embodiment is that by setting the position state of the branch switch, the utilization rate of high-temperature exhaust is higher and heat waste is reduced.

[0117] Figure 4 This is a schematic diagram of a branch switch provided in an embodiment of this application. This embodiment... Figure 3 Based on the embodiments, Figure 3 The area where the branch switch is located has been magnified in the figure. The positions of branch switch 235 and temperature sensor 236 shown in the figure are for illustrative purposes only; the actual installation should be determined based on the specific equipment. Figure 4 As shown.

[0118] In one possible design, temperature sensors are installed at the exhaust ports of the heating branches in the odd-numbered rows of the target column, except for the last row.

[0119] Each temperature sensor is set with its own critical temperature; the critical temperature is not less than the preset temperature.

[0120] The target temperature sensor is any one of the multiple temperature sensors in the target array; when the temperature detected by the target temperature sensor is greater than its own critical temperature, the target temperature sensor is used to indicate that the corresponding branch switch is placed in the first position.

[0121] Specifically, temperature sensors 236 are installed at the exhaust ports of the multiple heating branches 232, except for the last row.

[0122] Each sensor is set with its own critical temperature, and the critical temperature is not less than the preset temperature.

[0123] The target sensor is any one of the multiple temperature sensors corresponding to the target column. When the temperature detected by the target temperature sensor is greater than the critical temperature corresponding to the target temperature sensor, the control branch switch 235 is placed in the first position, and the high-temperature exhaust continues to pass through the heating branch to heat the liquid inside the liquid tank device 140. Conversely, when the temperature detected by the target temperature sensor is not greater than the critical temperature corresponding to the target temperature sensor, the control branch switch 235 is placed in the second position, and the high-temperature exhaust passes through this branch switch and enters the direct branch 233 and the exhaust branch 234 to discharge the exhaust gas.

[0124] Among them, the branch switch controlled by the temperature sensor can be implemented by motor drive or other control methods to achieve the purpose.

[0125] The technical effect of this application embodiment is: by detecting the temperature of high-temperature exhaust gas in real time through a temperature sensor, the branch switch corresponding to the target column is controlled to determine whether the high-temperature exhaust gas can be reused.

[0126] Figure 5 This is a left view of one heating branch provided in real-time for this application. (See image below.) Figure 5 As shown, each heating branch includes a cylindrical tube wall and multiple rectangular fins mounted on the cylindrical tube wall;

[0127] The plane containing each rectangular fin passes through the axis of the cylindrical tube wall.

[0128] Specifically, the external design of each heating branch is finned, meaning each heating branch consists of a cylindrical tube wall 2321 and multiple rectangular fins 2322. Each rectangular fin is evenly installed on the cylindrical tube wall 2321, and the plane of each rectangular fin 2322 passes through the axis of the cylindrical tube wall 2321, ensuring that each rectangular fin obtains the same temperature.

[0129] Each rectangular fin 2322 is identical in size and structure to ensure uniform heat transfer, and the number of rectangular fins is determined based on the actual equipment requirements.

[0130] The technical effect provided by this embodiment is that by using a finned design for the heating branch, the heat transfer efficiency can be significantly improved, resulting in a more uniform temperature distribution throughout the heat exchange process.

[0131] Figure 6 This is a schematic diagram of the dust collection box provided in an embodiment of this application. Figure 6 exist Figure 2 Based on this, the dust collection box 210 was partially enlarged, such as Figure 6As shown, the engine equipment includes an exhaust pipe and a fuel heating device, which is used to burn fuel to heat the coolant in the engine, and also includes a dust collection box;

[0132] The first end of the dust collection box is provided with a first air inlet and a second air inlet. The first air inlet is connected to the first interface of the exhaust pipe, and the second air inlet is connected to the exhaust port of the fuel heating device.

[0133] The exhaust port of the heating pipe is connected to the second interface of the exhaust pipe, and the second interface of the exhaust pipe is located behind the first interface of the exhaust pipe.

[0134] The second end of the dust collection box is designed to taper.

[0135] The exhaust port of the dust collection box is connected to the air inlet of the recycling pipeline, and the exhaust port of the dust collection box is located between the first end and the second end of the dust collection box.

[0136] Specifically, the dust collection box 210 includes a first air inlet 2101, a second air inlet 2102, and a dust collection box exhaust port 2103.

[0137] The dust collection box is provided with a first air inlet 2101 and a second air inlet 2102 at the first end, which respectively receive high-temperature exhaust from the engine and high-temperature exhaust from the fuel heating device, and can respectively utilize the waste heat of exhaust from the engine and the fuel heating device.

[0138] The exhaust pipe 120 of the engine equipment includes a first interface and a second interface; the first interface is used to communicate with the first air intake 2101 to utilize the waste heat of the high-temperature exhaust; the second interface is used to connect with the exhaust branch 234 of the heating pipe so that the waste heat utilization equipment can discharge the exhaust gas that is no longer used through this pipe.

[0139] The exhaust branch of the heating pipe 230 is connected to the second interface of the exhaust pipe of the engine equipment, and exhaust gas can be discharged through the exhaust pipe.

[0140] The second end of the dust collection box 210 has a tapered design, allowing carbon particles or other impurities in the high-temperature exhaust to be separated and processed through this tapered design. The exhaust port 2103 of the dust collection box is connected to the air inlet of the recovery pipeline 220 to facilitate the transport of the high-temperature exhaust to the heating pipeline.

[0141] The technical effect provided by this embodiment is that, by using a tapered design for the dust collection box, carbon particles or other impurities in high-temperature exhaust can be separated and treated, reducing the probability of combustion and explosion.

[0142] In one possible design, the second end of the dust collection box is made of a transparent, high-temperature resistant material, and the second end of the dust collection box is detachably connected to the dust collection box.

[0143] Specifically, the second end of the dust collection box 210 is made of a transparent, high-temperature resistant material, allowing for timely monitoring of the separation process, and the second end of the dust collection box 210 is detachable.

[0144] The technical effect provided by this embodiment is that, through the detachable and transparent design of the dust collection box, it can be viewed and disassembled in a timely manner, avoiding the accumulation of carbon particles and clogging of the dust collection box exhaust port.

[0145] This application also provides a liquid tank device, the liquid tank device comprising:

[0146] Liquid tank, and waste heat recovery equipment installed on the liquid tank;

[0147] The liquid stored in the tank is engine oil;

[0148] Engine fluids include engine oil, fuel, or hydraulic fluid.

[0149] Specifically, the liquid tank device 140 includes a liquid tank and the liquid inside the tank. The liquid inside the tank can be a variety of liquids, such as engine oil, fuel oil, or hydraulic oil.

[0150] The technical effect provided by this embodiment is that, through the waste heat utilization equipment, various engine oils can be preheated, thus realizing the reuse of energy.

[0151] This application also provides an engine device, the engine device comprising:

[0152] Engine, exhaust pipes, fuel heating device, and fuel tank equipment.

[0153] Specifically, such as Figure 1 As shown, the engine equipment 100 includes an engine 110, an exhaust pipe 120, a fuel heating device 130, and a fuel tank 140. The devices in the engine equipment 100 are distributed according to actual conditions; the diagram is for reference only. The waste heat recovery device 200 can reuse the exhaust gas generated during the operation of the engine equipment 100.

[0154] The technical effect provided by this embodiment is that the high-temperature exhaust generated during the operation of the engine is reused by the waste heat utilization equipment, thereby reducing heat loss.

[0155] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A waste heat recovery device, characterized in that, The waste heat utilization equipment includes: a recovery pipeline and a heating pipeline; The recovery pipeline is installed on the outside of the liquid tank and is wrapped with heat insulation cotton. The recovery pipeline is used to recover the high-temperature exhaust generated by the engine during operation. The heating pipe is installed inside the liquid tank, with the air inlet of the heating pipe located at the bottom of the liquid tank and the exhaust port of the heating pipe located at the top of the liquid tank. The air inlet of the heating pipe is connected to the exhaust outlet of the recovery pipe so that the high-temperature exhaust gas can enter the heating pipe through the recovery pipe; the heating pipe is used to heat the liquid stored in the liquid tank through the high-temperature exhaust gas.

2. The waste heat utilization equipment according to claim 1, characterized in that, The heating pipeline includes an intake branch, multiple heating branches, and an exhaust branch; The air inlet of the air intake branch is connected to the exhaust outlet of the recovery pipeline; The multiple heating branches are arranged horizontally in a matrix with multiple rows and at least one column. The air inlet of each heating branch in the first row is connected to the exhaust outlet of the air inlet branch, and the exhaust outlet of each heating branch in the last row is connected to the air inlet of the exhaust branch.

3. The waste heat utilization equipment according to claim 2, characterized in that, The heating pipeline also includes at least one straight branch, and the number of the at least one straight branch is the same as the number of columns of the plurality of heating branches; The number of rows of the multiple heating branches is odd, and the exhaust ports of the heating branches in the odd-numbered rows are all connected to the corresponding straight-through branches; the exhaust port of each of the straight-through branches is connected to the air inlet of the exhaust branch. The target column is any row in at least one column of the plurality of heating branches; the target through branch is the through branch in the at least one through branch that corresponds to the target column; The exhaust port of the heating branch in the first row of the target column is equipped with a branch switch; When the branch switch is in the first position, the exhaust port of the heating branch in the first row of the target column is connected to the air inlet of the heating branch in the second row of the target column, and is blocked from the target through branch; When the branch switch is in the second position, the exhaust port of the heating branch in the first row of the target column is blocked from the air inlet of the heating branch in the second row of the target column, and is connected to the target through branch.

4. The waste heat utilization equipment according to claim 3, characterized in that, When the number of rows of the multiple heating branches is greater than four, the exhaust ports of the heating branches in the odd-numbered rows of the target column, excluding the first and last rows, are all equipped with the branch switches. When the temperature of the high-temperature exhaust gas is greater than the preset temperature, the multiple branch switches of the target column are used to be placed in the first position one by one in order from bottom to top; The number of branch switches in the first position among the multiple branch switches of the target column is positively correlated with the temperature of the high-temperature exhaust gas.

5. The waste heat utilization equipment according to claim 4, characterized in that, Temperature sensors are installed at the exhaust ports of the heating branches in the odd-numbered rows of the target column, except for the last row. Each of the temperature sensors is set with its own critical temperature; the critical temperature is not less than the preset temperature. The target temperature sensor is any one of the multiple temperature sensors in the target column; when the temperature detected by the target temperature sensor is greater than its own critical temperature, the target temperature sensor is used to indicate that the corresponding branch switch is placed in the first position.

6. The waste heat utilization equipment according to any one of claims 2 to 5, characterized in that, Each of the heating branches includes a cylindrical tube wall and a plurality of rectangular fins mounted on the cylindrical tube wall; The plane containing each of the rectangular fins passes through the axis of the cylindrical tube wall.

7. The waste heat utilization equipment according to claim 1, characterized in that, The engine equipment includes an exhaust pipe and a fuel heating device, the fuel heating device being used to burn fuel to heat the coolant in the engine, and also includes a dust collection box; The dust collection box is provided with a first air inlet and a second air inlet at its first end. The first air inlet is connected to the first interface of the exhaust pipe, and the second air inlet is connected to the exhaust port of the fuel heating device. The exhaust port of the heating pipe is connected to the second interface of the exhaust pipe, and the second interface of the exhaust pipe is located behind the first interface of the exhaust pipe. The second end of the dust collection box is designed to taper. The exhaust port of the dust collection box is connected to the air inlet of the recycling pipeline, and the exhaust port of the dust collection box is located between the first end and the second end of the dust collection box.

8. The waste heat utilization equipment according to claim 7, characterized in that, The second end of the dust collection box is made of a transparent, high-temperature resistant material, and the second end of the dust collection box is detachably connected to the dust collection box.

9. A liquid tank device, characterized in that, The liquid tank device includes: A liquid tank, and a waste heat recovery device as described in any one of claims 1 to 8, mounted on the liquid tank; The liquid stored in the tank is engine oil; The engine oils include engine oil, fuel oil, or hydraulic oil.

10. An engine device, characterized in that, The engine equipment includes: An engine, an exhaust pipe, a fuel heating device, and a liquid tank device as described in claim 9.

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