Fracturing equipment, engine and its exhaust device

Abstract

The present application discloses a fracturing device, an engine and an exhaust device thereof, belonging to the technical field of turbo fracturing. The engine is provided with a first exhaust port. The exhaust device of the engine includes an exhaust muffler, a shroud and a cover plate. Among them, the exhaust muffler is arranged at the first exhaust port. The exhaust muffler is provided with a second exhaust port. The shroud is arranged at the second exhaust port. The shroud is movably connected to the exhaust muffler. The shroud can move relative to the exhaust muffler between a first position and a second position. And the cover plate is rotatably connected to the exhaust muffler to close or open the second exhaust port. When the shroud moves relative to the exhaust muffler to the first position and the cover plate opens the second exhaust port, the shroud and the cover plate form a raised cylinder. The raised cylinder is communicated with the second exhaust port. And the position of the upper port of the raised cylinder is higher than the position of the second exhaust port. The engine includes the above exhaust device. The fracturing device includes the above engine. In this way, it is beneficial to reduce the number of components and simplify the structure.

Description

Technical Field

[0001] This application belongs to the technical field of turbine fracturing, and specifically relates to a fracturing device, an engine and its exhaust device. Background Art

[0002] In the field of turbine fracturing, an exhaust muffler is usually installed at the exhaust port of the engine. The exhaust muffler leads out the exhaust gas in the engine and reduces the noise during the gas discharge process. Moreover, a rain cap is usually installed on the exhaust muffler. The rain cap can close the exhaust port of the exhaust muffler to prevent foreign matters such as external rainwater or sand from entering the exhaust muffler, thereby avoiding the influence on the engine caused by foreign matters entering the engine.

[0003] In the related art, the height difference between the exhaust port of the exhaust muffler and the installation surface where the engine is set is small, that is, the height of the exhaust port of the exhaust muffler is low, so that the noise of the gas discharged from the engine is still large after passing through the exhaust muffler, and the noise reduction effect is poor. To improve the noise reduction effect, a heightening device can be set at the exhaust port of the exhaust muffler to increase the exhaust height through the heightening device, thereby reducing the noise. However, the exhaust device needs to be provided with both a heightening device and a rain cap, resulting in a large number of components and a complex structure of the exhaust device. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a fracturing device, an engine and its exhaust device, which can solve the problem of the complex structure of the exhaust device in the related art.

[0005] In a first aspect, the embodiments of this application provide an exhaust device for an engine. The engine is provided with a first exhaust port. The exhaust device includes an exhaust muffler, a shroud and a cover plate, wherein:

[0006] The exhaust muffler is arranged at the first exhaust port, and the exhaust muffler is provided with a second exhaust port. The shroud is arranged at the second exhaust port. The shroud is movably connected to the exhaust muffler. The shroud can move between a first position and a second position relative to the exhaust muffler, and the cover plate is rotatably connected to the exhaust muffler to close or open the second exhaust port.

[0007] When the shroud moves relative to the exhaust muffler to the first position and the cover plate opens the second exhaust port, the shroud and the cover plate form a heightening cylinder. The heightening cylinder is communicated with the second exhaust port, and the position of the upper port of the heightening cylinder is higher than the position of the second exhaust port.

[0008] In a second aspect, the embodiments of this application provide an engine, including the above exhaust device.

[0009] Thirdly, an embodiment of the present application further provides a fracturing device, including the above-mentioned engine.

[0010] In the embodiment of the present application, the cover plate can be used as a rain cap. When the engine is in a non-operating state, the cover plate closes the second exhaust port to prevent foreign objects from entering the engine through the exhaust port. At the same time, the cover plate can also be used as a part of the heightening cylinder. When the second exhaust port is opened, the cover plate cooperates with the surrounding plate to form a heightening cylinder, so as to increase the exhaust height of the exhaust device, reduce the noise of the exhaust gas of the engine after passing through the exhaust muffler, and improve the noise reduction effect. In this way, the cover plate realizes dual use, and there is no need to separately set a heightening cylinder and a rain cap, which is beneficial to reducing the number of components of the exhaust device and simplifying the structure. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the engine exhaust device when the surrounding plate is in the first position disclosed in the embodiment of the present application;

[0012] Figure 2 is a schematic structural diagram of the engine exhaust device when the surrounding plate is in the second position disclosed in the embodiment of the present application;

[0013] Figure 3 is a partial schematic structural diagram of the engine exhaust device when the surrounding plate is in the first position disclosed in the embodiment of the present application;

[0014] Figure 4 is a partial schematic structural diagram of the engine exhaust device when the surrounding plate is in the second position disclosed in the embodiment of the present application;

[0015] Figure 5 is a partial schematic structural diagram of the engine exhaust device when the surrounding plate is between the first position and the second position disclosed in the embodiment of the present application;

[0016] Figure 6 is Figure 5 an enlarged view of part A in

[0017] Figure 7 is a schematic structural diagram of the guiding mechanism disclosed in the embodiment of the present application;

[0018] Figure 8 is a schematic structural diagram of the guide rail disclosed in the embodiment of the present application.

[0019] Description of the Reference Numerals:

[0020] 100 - Exhaust muffler, 110 - Second exhaust port,

[0021] 200 - Surrounding plate, 210 - First enclosing part, 220 - Second enclosing part, 230 - Third enclosing part,

[0022] 300 - Cover plate,

[0023] 400 - Connecting rod,

[0024] 510 - Limit sensor, 520 - Inductive element,

[0025] 600 - Guide mechanism, 610 - Guide rail, 620 - Sliding part, 630 - Lubricating plate,

[0026] 700 - Driving mechanism. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0028] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0029] Next, the fracturing equipment, engine and its exhaust device provided by the embodiments of the present application will be described in detail in conjunction with the accompanying drawings and through specific embodiments and their application scenarios.

[0030] Please refer to Figures 1-8, an embodiment of the present application discloses an exhaust device for an engine. The engine is provided with a first exhaust port. The exhaust device includes an exhaust muffler 100, a baffle 200, and a cover plate 300. Among them, the exhaust muffler 100 is arranged at the first exhaust port so that the exhaust of the engine enters the exhaust muffler 100 through the first exhaust port and is further discharged through the exhaust muffler 100. The exhaust muffler 100 is provided with a second exhaust port 110. The baffle 200 is arranged at the second exhaust port 110. The baffle 200 is movably connected to the exhaust muffler 100, and the baffle 200 can move relative to the exhaust muffler 100 between a first position and a second position. Among them, the second exhaust port 110 can be a square port or a circular port, and the structure of the second exhaust port 110 is not limited here. Optionally, the baffle 200 can be slidably connected to the exhaust muffler 100 or rotatably connected to the exhaust muffler 100. In short, at least a part of the baffle 200 can move above the second exhaust port 110 to form a raised cylinder. The cover plate 300 is rotatably connected to the exhaust muffler 100 to close or open the second exhaust port 110. Optionally, the edge of the cover plate 300 and the second exhaust port 110 of the exhaust muffler 100 can be rotatably connected through a hinge structure or can be rotatably connected through other structures. When the cover plate 300 opens the second exhaust port 110, the plane where the cover plate 300 is located can be parallel to the orientation of the second exhaust port 110.

[0031] As Figure 1 shown, when the baffle 200 moves relative to the exhaust muffler 100 to the first position and the cover plate 300 opens the second exhaust port 110, at this time at least a part of the baffle 200 is located above the second exhaust port 110, and the plane where the cover plate 300 is located is parallel to the orientation of the second exhaust port 110. The baffle 200 and the cover plate 300 form a raised cylinder. The raised cylinder is communicated with the second exhaust port 110, and the position of the upper port of the raised cylinder is higher than the position of the second exhaust port 110. It should be noted that the formed raised cylinder is an axially closed structure. In this way, the exhaust of the engine passes through the exhaust muffler 100 and the raised cylinder in sequence and is finally discharged from the upper port of the raised cylinder.

[0032] In the embodiment of the present application, the cover plate 300 can be used as a rain cap. When the engine is in a non-working state, the cover plate 300 closes the second exhaust port 110 to prevent external foreign objects from entering the engine through the exhaust port. At the same time, the cover plate 300 can also be used as a part of the raised cylinder. When the second exhaust port 110 is opened, the cover plate 300 cooperates with the baffle 200 to form a raised cylinder to increase the exhaust height of the exhaust device, reduce the noise of the exhaust gas of the engine after passing through the exhaust muffler 100, and improve the noise reduction effect. In this way, the cover plate 300 realizes dual use, and there is no need to separately set a raised cylinder and a rain cap, which is beneficial to reducing the number of components of the exhaust device and simplifying the structure.

[0033] Moreover, the height of the enclosure 200 can be changed by moving the enclosure 200 relative to the exhaust muffler 100. Therefore, when the cover plate 300 closes the second exhaust port 110, the height of the enclosure 200 can be lowered to reduce the overall height of the exhaust device, reduce the occupied space, and facilitate transportation.

[0034] In an optional embodiment, when the enclosing plate 200 moves to the first position relative to the exhaust muffler 100, the top surface of the enclosing plate 200 is higher than the top surface of the cover plate 300, or the top surface of the enclosing plate 200 is lower than the top surface of the cover plate 300. In another embodiment, Figure 1 and Figure 3 As shown, when the enclosure 200 moves to the first position relative to the exhaust muffler 100, the top surface of the enclosure 200 is flush with the top surface of the cover plate 300. In this way, the entire enclosure 200 is fully utilized to form a heightened cylinder, effectively increasing the exhaust height. This avoids the situation where part of the enclosure 200 is unable to participate in forming the heightened cylinder when the top surface of the enclosure 200 is higher than the top surface of the cover plate 300, and avoids the problem of the exhaust height being still small when the top surface of the enclosure 200 is lower than the top surface of the cover plate 300.

[0035] Optionally, when the enclosure 200 moves to the second position relative to the exhaust muffler 100, the enclosure 200 encloses the exhaust end of the exhaust muffler 100 and is arranged in close contact with the outer wall of the exhaust end. In this way, the space occupied by the enclosure 200 can be reduced, and the enclosure 200 does not occupy excess space other than the exhaust muffler 100, which is beneficial for reducing the space occupied by the exhaust device, making the structure more compact, and facilitating transportation of the exhaust device.

[0036] In an optional embodiment, the exhaust device may include a drive source connected to the cover plate 300 to drive the cover plate 300 to rotate. Alternatively, the drive source may be a telescopic cylinder, one end of which is hinged to the cover plate 300, and the other end of which is hinged to the exhaust muffler 100, so that the cover plate 300 is driven to rotate by the telescopic movement of the telescopic cylinder. In another embodiment, the cover plate 300 is movably connected to the enclosure 200, and when the enclosure 200 moves, the cover plate 300 rotates relative to the second exhaust port 110. When the enclosure 200 moves to a first position relative to the exhaust muffler 100, the cover plate 300 opens the second exhaust port 110, and the enclosure 200 and the cover plate 300 cooperate to form a heightening cylinder. When the enclosure 200 moves to a second position relative to the exhaust muffler 100, the cover plate 300 closes the second exhaust port 110, and the second exhaust port 110 is in a closed state. With this embodiment, the enclosure 200 directly drives the cover plate 300 to rotate to a suitable position when it moves. There is no need for a separate driving source to drive the cover plate 300 to rotate, which helps save energy.

[0037] In an alternative embodiment, the baffle 200 is rotatably connected to the exhaust muffler 100, and when the baffle 200 rotates, it drives the cover plate 300 to rotate through a transmission mechanism. Optionally, a first transmission shaft may be provided at the rotational connection between the baffle 200 and the exhaust muffler 100, and a second transmission shaft may be provided at the rotational connection between the cover plate 300 and the exhaust muffler 100. The first transmission shaft and the second transmission shaft may be connected through bevel gears or other structures for transmission. In short, when the baffle 200 rotates, it drives the first transmission shaft to rotate, and then drives the second transmission shaft and the cover plate 300 to rotate.

[0038] In another embodiment, as shown in Figures 3-5 , the baffle 200 is slidably connected to the exhaust muffler 100. Optionally, the baffle 200 can move up and down relative to the second exhaust port 110. When the baffle 200 moves from the second position to the first position, the baffle 200 rises, and when the baffle 200 moves from the first position to the second position, the baffle 200 descends. The exhaust device further includes a connecting rod 400. The first end of the connecting rod 400 is hinged to the cover plate 300, and the second end of the connecting rod 400 is hinged to the baffle 200. When the baffle 200 slides relative to the exhaust muffler 100, it drives the cover plate 300 to rotate relative to the second exhaust port 110 through the connecting rod 400. Optionally, a base is fixedly provided at the edge of the second exhaust port 110, and the lower edge of the cover plate 300 is hinged to the base. One end of the connecting rod 400 is hinged to the cover plate 300. Therefore, the end of the connecting rod 400 hinged to the cover plate 300 can rotate around the hinge point between the cover plate 300 and the base. The other end of the connecting rod 400 is hinged to the baffle 200, and the baffle 200 can slide relative to the exhaust muffler 100. Therefore, the other end of the connecting rod 400 can also slide relative to the exhaust muffler 100. In this way, the cover plate 300, the connecting rod 400, and the baffle 200 form a crank-slider mechanism. The baffle 200 serves as the slider of the crank-slider mechanism, and the cover plate 300 serves as the crank of the crank-slider mechanism. Therefore, the baffle 200 can drive the cover plate 300 to rotate only through the connecting rod 400, reducing the number of transmission components, making the connection structure between the baffle 200 and the cover plate 300 simple, and facilitating the simplification of the structure of the exhaust device.

[0039] In an alternative embodiment, the connecting rod 400 may be provided as one. In another embodiment, the surrounding plate 200 is a bent plate. The surrounding plate 200 includes a first surrounding portion 210, a second surrounding portion 220, and a third surrounding portion 230. The first surrounding portion 210, the second surrounding portion 220, the third surrounding portion 230, and the cover plate 300 are connected end to end in sequence. Optionally, the first surrounding portion 210, the second surrounding portion 220, and the third surrounding portion 230 may be of an integral structure. The side edges of the cover plate 300 include a left side edge and a right side edge. The number of the connecting rods 400 is at least two. The first ends of two of the connecting rods 400 are respectively hinged to the left side edge and the right side edge, and the second ends of the two connecting rods 400 are respectively hinged to the first surrounding portion 210 and the third surrounding portion 230. By adopting this embodiment, with at least two connecting rods 400, when the surrounding plate 200 slides, at least two connecting rods 400 are used to drive different positions of the cover plate 300 to rotate, which is beneficial to improving the stability of the cover plate 300 during the rotation process.

[0040] In an alternative embodiment, as Figure 6 shown, the exhaust device further includes a limit sensor 510 and a sensing member 520. One of the limit sensor 510 and the sensing member 520 is disposed on the exhaust muffler 100, and the other is disposed on the cover plate 300. The limit sensor 510 is used to detect the position of the sensing member 520. When the limit sensor 510 detects that the sensing member 520 moves to a preset position relative to the limit sensor 510, the engine stops working, and / or the exhaust muffler 100 gives an alarm. Optionally, the limit sensor 510 may be a proximity switch, specifically, a forming switch, a position switch, etc. The limit sensor 510 may also be a displacement sensor. The exhaust device may further include a control device. The control device is communicatively connected to the exhaust muffler 100, the engine, and the limit sensor 510 respectively. When the limit sensor 510 detects that the sensing member 520 moves to the preset position, the control device controls the engine to stop working, and / or the control device controls the exhaust muffler 100 to give an alarm. It should be noted that the preset position can be set as needed.

[0041] During the rotation of the cover plate 300, the relative positions of the limit sensor 510 and the sensing member 520 change. Therefore, by detecting the position of the sensing member 520 through the limit sensor 510, the relative position change between the cover plate 300 and the exhaust muffler 100 can be detected, and further, the state of the second exhaust port 110 can be detected. When the limit sensor 510 detects that the sensing member 520 moves to a preset position, it indicates that the position of the cover plate 300 is abnormal. For example, the cover plate 300 abnormally closes the second exhaust port 110 or makes the opening degree of the second exhaust port 110 too small, resulting in the engine in operation being unable to exhaust normally. Therefore, at this time, the engine stops working, and / or the exhaust muffler 100 gives an alarm. The operator further shuts down the engine according to the alarm information to avoid the influence on the engine caused by the abnormal closing of the second exhaust port 110 by the cover plate 300.

[0042] In an alternative embodiment, the exhaust device further includes a guiding mechanism 600. The guiding mechanism 600 includes a guide rail 610 and a sliding member 620. One of the guide rail 610 and the sliding member 620 is disposed on the exhaust muffler 100, and the other is disposed on the shroud 200. The guide rail 610 and the sliding member 620 are in sliding cooperation. Optionally, as Figure 7 shown, a guide rail 610 is provided on the outer wall of the exhaust end of the exhaust muffler 100. The lower end of the shroud 200 is connected to a frame. The frame includes a slide bar or a slider. The sliding member 620 can be a slide bar or a slider. The sliding member 620 extends into the guide rail 610, and the sliding member 620 is in guiding cooperation with the guide rail 610. By adopting this embodiment, the guiding mechanism 600 is used to apply guidance to the sliding direction of the shroud 200, so that the shroud 200 accurately moves along the guiding direction of the guide rail 610, avoiding deviation in the moving direction of the shroud 200. Of course, in other embodiments, during the process of driving the shroud 200 to slide by means of the driving mechanism 700 or external force, if the sliding direction of the shroud 200 is the vertical direction and the shroud 200 accurately moves up and down along the height direction of the exhaust device, the guiding mechanism 600 may not be provided.

[0043] In an alternative embodiment, the number of the guiding mechanisms 600 is at least two, and at least two of the guiding mechanisms 600 are respectively disposed on the opposite sides of the exhaust muffler 100. Optionally, at least two of the guiding mechanisms 600 are respectively connected to the first enclosing portion 210 and the third enclosing portion 230. In this way, by applying guidance to different positions of the shroud 200 through at least two guiding mechanisms 600 respectively, the shroud 200 as a whole accurately moves along the guiding direction of the guide rail 610. Moreover, the exhaust muffler 100 and the shroud 200 are slidably connected through the guiding mechanism 600. Therefore, the guiding mechanism 600 and the exhaust muffler 100 provide support for the shroud 200, avoiding the shroud 200 detaching from the exhaust muffler 100 in the case of abnormal driving.

[0044] In an alternative embodiment, asFigure 8 As shown, the guide rail has a "U" - shaped structure. The guide rail 610 is provided with a chute, and a lubricating plate 630 is arranged in the chute. The sliding member 620 is in clearance fit with the lubricating plate 630. In this way, by applying lubricant on the lubricating plate 630, it is beneficial for the smooth sliding of the sliding member 620 and avoids the jamming of the sliding member 620 during the sliding process. Moreover, chamfers are provided at the ends or edges of the lubricating plate 630 to prevent the lubricating plate 630 from being too sharp and wearing the sliding member 620 during the sliding process.

[0045] In an alternative embodiment, the enclosure 200 can be driven to move relative to the exhaust muffler 100 manually. In another embodiment, the exhaust device further includes a driving mechanism 700. The driving mechanism 700 is connected to the enclosure 200 to drive the enclosure 200 to move relative to the exhaust muffler 100. Optionally, when the enclosure 200 is slidably connected to the exhaust muffler 100, the driving mechanism 700 can be a telescopic member such as a cylinder or a hydraulic cylinder, or a driving source such as a linear module. One end of the driving mechanism 700 is a fixed end, and the moving end of the driving mechanism 700 directly drives the enclosure 200 to move; when the enclosure 200 is rotatably connected to the exhaust muffler 100, the driving mechanism 700 can be a telescopic member such as a cylinder or a hydraulic cylinder. One end of the telescopic member is hinged to the outer wall of the exhaust muffler 100, and the other end of the telescopic member is hinged to the enclosure 200. When the telescopic member expands and contracts, it drives the enclosure 200 to rotate relative to the exhaust muffler 100.

[0046] Adopting this embodiment, using the driving mechanism 700 to drive the enclosure 200 to move, avoiding manual operation, improving the switching efficiency of the enclosure 200 between the first position and the second position, and ensuring that the exhaust device exhausts in time or closes the second exhaust port 110 in time.

[0047] Based on the exhaust device disclosed in the present application, an engine is also disclosed in an embodiment of the present application. The disclosed engine includes the exhaust device in the above - mentioned embodiment.

[0048] Based on the engine disclosed in the present application, a fracturing device is also disclosed in an embodiment of the present application. The disclosed fracturing device includes the engine in the above - mentioned embodiment.

[0049] The embodiments of the present application have been described above with reference to the accompanying drawings. However, the present application is not limited to the above - mentioned specific embodiments. The above - mentioned specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. An exhaust device for an engine, the engine being provided with a first exhaust port, characterized in that, The exhaust device includes an exhaust muffler (100), a surrounding plate (200), and a cover plate (300), where: The exhaust muffler (100) is disposed at the first exhaust port, and the exhaust muffler (100) is provided with a second exhaust port (110). The surrounding plate (200) is disposed at the second exhaust port (110). The surrounding plate (200) is movably connected to the exhaust muffler (100). The surrounding plate (200) can move between a first position and a second position relative to the exhaust muffler (100). The cover plate (300) is rotatably connected to the exhaust muffler (100) to close or open the second exhaust port (110). When the surrounding plate (200) moves relative to the exhaust muffler (100) to the first position and the cover plate (300) opens the second exhaust port (110), the surrounding plate (200) and the cover plate (300) form a raised cylinder. The raised cylinder is communicated with the second exhaust port (110), and the position of the upper port of the raised cylinder is higher than the position of the second exhaust port (110). The cover plate (300) is movably connected to the surrounding plate (200). When the surrounding plate (200) moves, it drives the cover plate (300) to rotate relative to the second exhaust port (110). When the surrounding plate (200) moves relative to the exhaust muffler (100) to the first position, the cover plate (300) opens the second exhaust port (110). When the surrounding plate (200) moves relative to the exhaust muffler (100) to the second position, the cover plate (300) closes the second exhaust port (110).

2. The exhaust device according to claim 1, wherein, When the surrounding plate (200) moves relative to the exhaust muffler (100) to the first position, the top surface of the surrounding plate (200) is flush with the top surface of the cover plate (300).

3. The exhaust device according to claim 1, characterized in that, The surrounding plate (200) is slidably connected to the exhaust muffler (100). The exhaust device further includes a connecting rod (400). The first end of the connecting rod (400) is hinged to the cover plate (300), and the second end of the connecting rod (400) is hinged to the surrounding plate (200). When the surrounding plate (200) slides relative to the exhaust muffler (100), it drives the cover plate (300) to rotate relative to the second exhaust port (110) through the connecting rod (400).

4. The exhaust device according to claim 3, characterized in that, The surrounding plate (200) is a bent plate. The surrounding plate (200) includes a first surrounding portion (210), a second surrounding portion (220), and a third surrounding portion (230). The first surrounding portion (210), the second surrounding portion (220), the third surrounding portion (230), and the cover plate (300) are connected end to end in sequence. The side edges of the cover plate (300) include a left side edge and a right side edge. The number of the connecting rods (400) is at least two. The first ends of two of the connecting rods (400) are respectively hinged to the left side edge and the right side edge, and the second ends of the two connecting rods (400) are respectively hinged to the first enclosure part (210) and the third enclosure part (230).

5. The exhaust device according to claim 1, characterized in that, The exhaust device further includes a limit sensor (510) and an induction member (520). One of the limit sensor (510) and the induction member (520) is arranged on the exhaust muffler (100), and the other is arranged on the cover plate (300). When the limit sensor (510) detects that the induction member (520) moves to a preset position relative to the limit sensor (510), the engine stops working, and / or the exhaust muffler (100) gives an alarm.

6. The exhaust device according to claim 1, wherein, The exhaust device further includes a guiding mechanism (600). The guiding mechanism (600) includes a guide rail (610) and a sliding member (620). One of the guide rail (610) and the sliding member (620) is arranged on the exhaust muffler (100), and the other is arranged on the enclosure plate (200). The guide rail (610) is in sliding fit with the sliding member (620). The number of the guiding mechanisms (600) is at least two, and at least two of the guiding mechanisms (600) are respectively arranged on opposite sides of the exhaust muffler (100).

7. The exhaust device according to claim 1, characterized in that The exhaust device further includes a driving mechanism (700). The driving mechanism (700) is connected to the enclosure plate (200) to drive the enclosure plate (200) to move relative to the exhaust muffler (100).

8. An engine, characterized in that, An exhaust device according to any one of claims 1-7 is included.

9. A fracturing device, characterized in that, An engine according to claim 8 is included.

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