Exhaust device of diesel generating set

Abstract

The invention relates to the technical field of exhaust devices, in particular to an exhaust device of a diesel generating set, which comprises a machine body and an exhaust assembly, the exhaust assembly comprises a front row pipe, a plurality of groups of additional pipes and a rear row pipe, and an air passage adjusting assembly is arranged in each additional pipe and comprises an inner pull pipe, a middle pull pipe and an outer pull pipe; inner cavities of the pull pipes are divided into U-shaped channel structures by isolation assemblies, a third check block, a fifth check block, a sixth check block and a seventh check block are sequentially arranged on the inner side wall of the inner pull pipe, a first check block, a fourth check block, an eighth check block and a tenth check block are sequentially arranged on the inner side wall of the middle pull pipe, and a second check block and a ninth check block are sequentially arranged on the inner side wall of the outer pull pipe. The plurality of check blocks deflect up and down and form a plurality of expansion cavities in the U-shaped channel; the total length of the exhaust channel can be flexibly adjusted according to actual needs, the sound wave propagation time can be prolonged, and the purpose of reducing noise is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of exhaust devices, in particular to an exhaust device for a diesel generator set. Background Art

[0002] In modern society, diesel generator sets are widely used in various occasions, such as factories, commercial buildings, hospitals, schools, etc., to provide a stable power supply. However, diesel generator sets will generate noise and vibration during operation, which will not only affect the surrounding environment and human health, but also reduce the quality of work and life.

[0003] At present, noise reduction technologies mainly include the following methods: such as using sound-absorbing materials to absorb and eliminate exhaust noise, including arranging sound-absorbing materials in the exhaust device, or installing silencers at the exhaust port. Although the above methods can reduce noise to a certain extent, the noise reduction effect of a single silencer is limited, and installing multiple silencers at the same time will increase the complexity of the exhaust system, requiring consideration of more pipe connections and installation details, which may increase the difficulty of maintenance and repair, and installing multiple silencers may affect the balance of the exhaust flow, which may cause poor or uneven exhaust, thereby affecting the working effect of the engine. Summary of the invention

[0004] The object of the present invention is to provide an exhaust device for a diesel generator set to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an exhaust device of a diesel generator set, comprising a body, an exhaust assembly arranged on the body, the outside of the exhaust assembly is wrapped with a cover body, the exhaust assembly comprises a front pipe, multiple groups of additional pipes and a rear pipe in sequence, the multiple groups of additional pipes are freely combined and spliced ​​with each other through a detachable structure; each group of additional pipes is arranged to be through-connected on the left and right and an airway adjustment assembly is arranged inside, the airway adjustment assembly comprises an inner pull pipe, a middle pull pipe and an outer pull pipe, the inner cavities of the multiple pull pipes are divided into a U-shaped channel structure by an isolation assembly, and the isolation assembly comprises a first partition, a second partition and a third partition; the upper end of the inner pull pipe is self-attached to the additional pipe The lower end is inserted into and fixedly connected to the top wall of the inner cavity of the installation tube, and a medium-sized pull tube is inserted into the inner limit sliding connection of the inner pull tube. One end of the inner pull tube is fixedly connected to the bottom plate, and the other end of the inner pull tube is inserted into the medium-sized pull tube in a limit sliding connection. The bottom plate is driven by the main drive device and moves up and down in a straight line to realize the telescopic action of multiple pull tubes; block three, block five, block six and block seven are arranged in sequence on the inner side wall of the inner pull tube, block one, block four, block eight and block ten are arranged in sequence on the inner side wall of the medium-sized pull tube, and block two and block nine are arranged in sequence on the inner side wall of the outer pull tube. Multiple blocks deflect up and down and form multiple expansion cavities in the U-shaped channel for silencing the exhaust gas.

[0006] Preferably, a narrow rectangular cavity is opened on the inner side of the top wall of the installation tube, and a limit plate is slidably installed in the narrow rectangular cavity. One end of the No. 1 partition is fixedly connected to the limit plate, and the other end of the No. 1 partition extends into the outer pull tube. One end of the No. 2 partition is slidably inserted in the No. 1 partition, and the other end of the No. 2 partition extends into the medium pull tube. One end of the No. 3 partition is slidably inserted in the No. 2 partition, and the other end of the No. 3 partition passes through the inner pull tube and is fixedly connected to the bottom plate, and the lower end of the No. 3 partition is provided with a groove.

[0007] Preferably, the block 2 and two groups of block 1 symmetrically arranged at its upper end and partition No. 2 form a first expansion chamber, the block 4 and two groups of block 3 symmetrically arranged at its upper end and partition No. 3 form a second expansion chamber, the block 5 and partition No. 3 form a third expansion chamber, the block 6 and partition No. 3 form a fourth expansion chamber, the block 8 and two groups of block 7 symmetrically arranged at its lower end and partition No. 3 form a fifth expansion chamber, and the block 9 and two groups of block 10 symmetrically arranged at its lower end and partition No. 2 form a sixth expansion chamber.

[0008] Preferably, the block three and block seven are provided in two groups and are symmetrically arranged on the front and rear sides of the inner wall of the inner pull tube, and the block six and block five are arranged on the left and right sides of the inner wall of the inner pull tube. The ends of the block three, block five, block six and block seven are fixedly connected with shaft one, and a No. 1 spur gear is fixedly sleeved on the shaft one, and each No. 1 spur gear is driven to rotate by a group of first linkage components.

[0009] Preferably, the first linkage assembly includes a No. 1 rack, a lower pressure bar and a No. 1 spring, one end of the No. 1 rack is meshed and connected to a No. 1 spur gear, the other end of the No. 1 rack extends into the bottom plate and is fixedly connected to the lower pressure bar, two groups of No. 1 springs are fixedly arranged at the lower end of the lower pressure bar, one end of the lower pressure bar away from the No. 1 rack extends out of the inner pull tube to the outside, and the part of the lower pressure bar extending out of the inner pull tube is in contact with the bottom wall of the medium pull tube.

[0010] Preferably, there are two groups of block one and block ten, which are symmetrically arranged on the front and rear sides of the inner wall of the medium pull tube, and block four and block eight are installed on the left and right sides of the inner wall of the inner pull tube. Shaft two is fixedly inserted into the ends of block one and block ten that are away from each other, and a number two spur gear is coaxially fixedly connected to the shaft two, and each group of number two spur gears is driven to rotate by a group of second linkage components.

[0011] Preferably, the second linkage assembly includes a No. 2 rack, a No. 2 spring and a T-shaped push block. The No. 2 rack is limitedly slidably installed on the medium pull tube. One end of the No. 2 rack is meshed and connected to the No. 2 spur gear, and the other end of the No. 2 rack is fixedly connected to the T-shaped push block. One end of the T-shaped push block is fixedly connected to the No. 2 spring, and the other end of the T-shaped push block extends out of the bottom wall of the medium pull tube and is in contact with the upper end surface of the bottom plate.

[0012] Preferably, the block two and the block nine are installed on the left and right sides of the inner wall of the outer pull tube, and the ends of the block two, the block nine, the block four and the block eight are fixedly plugged with the shaft three, and the shaft three is fixedly sleeved with a middle spur gear, and each group of middle spur gears is driven by a group of third linkage components, and a placement groove for accommodating the third linkage component is opened inside the medium pull tube and the outer pull tube.

[0013] Preferably, the third linkage assembly includes a longitudinal rack, a pushing seat, a cylindrical pin, a block and a No. 3 spring. One end of the longitudinal rack is meshed and connected to the middle spur gear, and the other end of the longitudinal rack is fixedly connected to the pushing seat. An inclined groove is provided on the pushing seat, and a cylindrical pin is inserted in the inclined groove. The cylindrical pin is fixedly connected to the block, and one end of the block is fixedly connected to the No. 3 spring. The other end of the block is arranged in an arc shape and extends out of the placement slot. The arc end of the block on the medium pull tube is in contact with the bottom wall of hole one, and the arc end of the block on the outer pull tube is in contact with the bottom wall of hole two.

[0014] Preferably, the main drive device includes a protrusion and an electric push rod, the rear end cover of the electric push rod is fixedly arranged in the mounting tube, the piston rod of the electric push rod extends downward and is fixedly connected to the protrusion, and the protrusion is fixedly connected to the base plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges an inner pull tube, a middle pull tube, an outer pull tube, a No. 1 baffle, a No. 2 baffle, a No. 3 baffle and a plurality of baffles in the installation tube in sequence for use, and can flexibly adjust the total length of the exhaust passage according to actual needs, so as to increase the propagation time of sound waves, so that the sound waves are reflected and interfered multiple times in the pipeline, thereby reducing the propagation of noise and reducing its sound level.

[0016] 2. By setting the bumps and using them together with the electric push rod, the inner pull tube, the medium pull tube, the outer pull tube and multiple groups of partitions can be pushed to expand or retract quickly, which can not only extend the overall length of the exhaust channel, improve the silencing effect of the entire exhaust system, reduce the noise generated by the exhaust, improve the working environment, and reduce the impact on the surrounding environment; but also can timely shorten the total exhaust time according to the balance state of the exhaust flow, reduce the resistance of the exhaust pipe, and achieve good exhaust efficiency of the explosion war engine.

[0017] 3. The present invention divides the U-shaped channel into multiple expansion chambers by arranging multiple partitions, which can increase the number of interactions between the sound wave and the baffle, so that the gas is reflected and interfered multiple times in the expansion chamber, so that the sound energy is absorbed, weakened and scattered, thereby improving the noise reduction effect.

[0018] 4. By setting up multiple linkage components for use, the linear motion of the inner pull tube, the middle pull tube and the outer pull tube can be used as the driving force for the movement of the multiple blocks and the multiple partitions, so that the multiple blocks can adaptively perform up and down flipping motion according to the movement state of the pull tube, thereby facilitating the opening and closing adjustment of the airway adjustment component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a schematic diagram of another viewing angle of the structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the connection between the exhaust assembly and the cover body of the present invention.

[0022] Figure 4 It is a three-dimensional schematic diagram of the exhaust assembly of the present invention.

[0023] Figure 5 It is a schematic cross-sectional view of the exhaust assembly of the present invention.

[0024] Figure 6 It is a cross-sectional schematic diagram of the installation pipe in the present invention.

[0025] Figure 7 It is an exploded schematic diagram of the installation tube and internal components in the present invention.

[0026] Figure 8 It is a schematic diagram of the connection between the isolation component and multiple blocks in the present invention.

[0027] Fig. 9 It is a schematic diagram of the retracted state of the airway adjustment component in the present invention.

[0028] Fig.10 It is a schematic diagram of the airway adjustment component in the present invention in the unfolded state.

[0029] Fig.11 It is a schematic diagram of the connection between the inner pull tube and multiple blocks in the present invention.

[0030] Fig.12 It is a schematic diagram of the connection between the stopper and the first linkage assembly in the present invention.

[0031] Fig.13 It is a schematic diagram of the connection between the medium-sized draw tube and multiple blocks of the present invention.

[0032] Fig.14 It is a schematic diagram of the connection between the stopper and the second linkage assembly in the present invention.

[0033] Fig.15 It is a schematic diagram of the connection between the outer pull tube and multiple blocks in the present invention.

[0034] Fig.16 It is a schematic diagram of the connection between the stopper and the third linkage assembly in the present invention.

[0035] In the figure: body 1, exhaust assembly 2, front pipe 21, installation pipe 22, rear pipe 23, cover 3, bottom plate 4, bump 5, electric push rod 6, inner pull pipe 7, hole 1 701, shaft 1 702, spur gear 1 703, rack 1 704, lower pressure strip 705, spring 1 706, block 3 71, block 5 72, block 6 73, block 74, medium pull pipe 8, hole 2 801, shaft 2 802, spur gear 2 8 03, rack No. 2 804, spring No. 2 805, T-shaped push block 806, block one 81, block four 82, block eight 83, block ten 84, outer pull tube 9, hole three 901, block two 91, block nine 92, partition No. 1 10, partition No. 2 11, partition No. 3 12, shaft three 13, middle spur gear 14, longitudinal rack 15, push seat 16, inclined groove 1601, cylindrical pin 17, block 18, spring No. 3 19. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 16The present invention provides a technical solution: an exhaust device of a diesel generator set, comprising a body 1, an exhaust assembly arranged on the body 1, the outside of the exhaust assembly is wrapped with a cover body 3, and the cover body 3 is arranged to achieve physical isolation of the exhaust pipe from the outside, so as to avoid scalding of the passing staff by the high-temperature exhaust pipe; the exhaust assembly comprises a front row pipe 21, multiple groups of additional pipes 22 and a rear row pipe 23 in sequence, the multiple groups of additional pipes 22 are freely combined and spliced ​​with each other through a detachable structure, and the outer periphery of the left and right sides of the additional pipe 22 are protrudingly provided with annular outer edges, which is convenient for rapid splicing between two adjacent groups of additional pipes 22; each group of additional pipes 22 is arranged to be through-connected on the left and right and an airway regulating assembly is arranged inside, the airway regulating assembly comprises an inner pull pipe 7, a medium pull pipe 8 and an outer pull pipe 9, the inner cavities of the multiple pull pipes are divided into a U-shaped channel structure by the isolation assembly, and the isolation assembly comprises a No. 1 partition 10, No. 2 partition 11 and No. 3 partition 12; the upper end of the inner pull tube 7 is inserted from the lower end of the installation tube 22 and fixedly connected to the top wall of the inner cavity of the installation tube 22, the inner pull tube 7 is internally limited and slidably inserted with the medium pull tube 8, one end of the inner pull tube 7 is fixedly connected to the bottom plate 4, and the other end of the inner pull tube 7 is limited and slidably inserted in the medium pull tube 8, the bottom plate 4 is driven by the main drive device and moves up and down in a straight line, so as to realize the telescopic action of multiple pull tubes; block three 71, block five 72, block six 73 and block seven 74 are arranged on the inner wall of the inner pull tube 7 in sequence, block one 81, block four 82, block eight 83 and block ten 84 are arranged on the inner wall of the medium pull tube 8 in sequence, and block two 91 and block nine 92 are arranged on the inner wall of the outer pull tube 9 in sequence, and multiple blocks deflect up and down and form multiple expansion chambers in the U-shaped channel for silencing the exhaust gas.

[0038] Furthermore, the present invention arranges an inner pull tube 7, a medium pull tube 8, an outer pull tube 9, a first baffle 10, a second baffle 11, a third baffle 12 and a plurality of blocks in sequence in the installation tube 22 for use in combination, and can flexibly adjust the total length of the exhaust passage according to actual needs, so as to increase the propagation time of sound waves, so that the sound waves are reflected and interfered multiple times in the pipeline, thereby weakening the propagation of noise and reducing its sound level.

[0039] like Figure 4 , Figure 5 , Fig. 9 as well as Fig.10As shown, a narrow rectangular cavity is provided on the inner side of the top wall of the installation tube 22, and a limit plate is installed in the narrow rectangular cavity for limiting sliding. One end of the No. 1 partition 10 is fixedly connected to the limit plate, and the other end of the No. 1 partition 10 extends into the outer pull tube 9. One end of the No. 2 partition 11 is limitedly slidably inserted into the No. 1 partition 10, and the other end of the No. 2 partition 11 extends into the middle pull tube 8. One end of the No. 3 partition 12 is limitedly slidably inserted into the No. 2 partition 11, and the other end of the No. 3 partition 12 passes through the inner pull tube 7 and is fixedly connected to the bottom plate 4, and the lower end of the No. 3 partition 12 is provided with a slot. The main drive device includes a convex block 5 and an electric push rod 6. The rear end cover of the electric push rod 6 is fixedly set in the installation tube 22, and the piston rod of the electric push rod 6 extends downward and is fixedly connected to the convex block 5, and the convex block 5 is fixedly connected to the bottom plate 4.

[0040] Furthermore, by setting the protrusion 5 for use with the electric push rod 8, the inner pull tube 7, the medium pull tube 8 and the outer pull tube 9 as well as multiple groups of partitions can be pushed to expand or retract quickly, which can not only extend the overall length of the exhaust channel, improve the silencing effect of the entire exhaust system, reduce the noise generated by the exhaust, improve the working environment, and reduce the impact on the surrounding environment; but also can timely shorten the total exhaust time according to the balance state of the exhaust flow, reduce the resistance of the exhaust pipe, and ensure the uniform exhaust of the engine.

[0041] like Figure 6 , Figure 8 as well as Fig.10 As shown, block two 91 and two groups of block one 81 symmetrically arranged at its upper end and partition No. 2 11 form a first expansion chamber, block four 82 and two groups of block three 71 symmetrically arranged at its upper end and partition No. 3 12 form a second expansion chamber, block five 72 and partition No. 3 12 form a third expansion chamber, block six 73 and partition No. 3 12 form a fourth expansion chamber, block eight 83 and two groups of block seven 74 symmetrically arranged at its lower end and partition No. 3 12 form a fifth expansion chamber, and block nine 92 and two groups of block ten 84 symmetrically arranged at its lower end and partition No. 2 11 form a sixth expansion chamber.

[0042] Furthermore, by setting up multiple partitions to divide the U-shaped channel into multiple expansion chambers, the number of interactions between the sound waves and the baffles can be increased, so that the gas is reflected and interfered multiple times in the expansion chamber, so that the sound energy is absorbed, weakened and scattered, thereby improving the noise reduction effect.

[0043] like Figure 10-12As shown, there are two groups of block three 71 and block seven 74 and they are symmetrically arranged on the front and back sides of the inner wall of the inner pull tube 7, block six 73 and block five 72 are arranged on the left and right sides of the inner wall of the inner pull tube 7, and the ends of block three 71, block five 72, block six 73 and block seven 74 are fixedly connected with shaft one 702, and shaft one 702 is fixedly sleeved with a number one spur gear 703, and each number one spur gear 703 is driven to rotate by a group of first linkage components. The first linkage assembly includes a No. 1 rack 704, a lower pressure strip 705 and a No. 1 spring 706. One end of the No. 1 rack 704 is meshed and connected to the No. 1 spur gear 703. The other end of the No. 1 rack 704 extends into the bottom plate 4 and is fixedly connected to the lower pressure strip 705. Two groups of No. 1 springs 706 are fixedly arranged at the lower end of the lower pressure strip 705. One end of the lower pressure strip 705 away from the No. 1 rack 704 extends out of the inner pull tube 7 to the outside, and the part of the lower pressure strip 705 extending out of the inner pull tube 7 is in contact with the bottom wall of the medium pull tube 8.

[0044] Furthermore, by setting up shaft 1 702, No. 1 spur gear 703, No. 1 rack 704, lower pressure bar 705 and No. 1 spring 706 for use in combination, the up and down movement of the base plate 4 can be converted into the synchronous flipping movement of block three 71, block five 72, block six 73 and block seven 74.

[0045] like Fig.10 , Fig.13 as well as Fig.14 As shown, there are two groups of block one 81 and block ten 84, which are symmetrically arranged on the front and back sides of the inner wall of the medium pull tube 8, and block four 82 and block eight 83 are installed on the left and right sides of the inner wall of the inner pull tube 7. The ends of block one 81 and block ten 84 that are away from each other are fixedly plugged with shaft two 802, and shaft two spur gear 803 is coaxially fixedly connected to shaft two 802, and each group of No. 2 spur gears 803 is driven to rotate by a group of second linkage components. The second linkage assembly includes a No. 2 rack 804, a No. 2 spring 805 and a T-shaped push block 806. The No. 2 rack 804 is slidingly installed on the medium pull tube 8. One end of the No. 2 rack 804 is meshed and connected to the No. 2 spur gear 803. The other end of the No. 2 rack 804 is fixedly connected to the T-shaped push block 806. One end of the T-shaped push block 806 is fixedly connected to the No. 2 spring 805. The other end of the T-shaped push block 806 extends out of the bottom wall of the medium pull tube 8 and is in contact with the upper end surface of the bottom plate 4.

[0046] Furthermore, by setting up hole 2 801, shaft 2 802, No. 2 spur gear 803, No. 2 rack 804, No. 2 spring 805 and T-shaped push block 806 for use in combination, the squeezing force of the base plate 4 on the medium pull tube 8 can be converted into an up and down deflection movement of block 1 81 and block 10 84.

[0047] like Fig.10 , Figure 14-16As shown, block two 91 and block nine 92 are installed on the left and right sides of the inner wall of the outer pull tube 9, and the ends of block two 91, block nine 92, block four 82 and block eight 83 are fixedly connected with shaft three 13, and a middle spur gear 14 is fixedly sleeved on shaft three 13. Each group of middle spur gears 14 is driven by a group of third linkage components, and a placement groove for accommodating the third linkage component is opened inside the medium pull tube 8 and the outer pull tube 9. The third linkage assembly includes a longitudinal rack 15, a pushing seat 16, a cylindrical pin 17, a block 18 and a No. 3 spring 19. One end of the longitudinal rack 15 is meshed and connected to the middle spur gear 14, and the other end of the longitudinal rack 15 is fixedly connected to the pushing seat 16. An inclined groove 1601 is provided on the pushing seat 16, and a cylindrical pin 17 is inserted in the inclined groove 1601. The cylindrical pin 17 is fixedly connected to the block 18. One end of the block 18 is fixedly connected to the No. 3 spring 19, and the other end of the block 18 is arranged in an arc shape and extends out of the placement slot. The arc end of the block 18 on the medium pull tube 8 is in contact with the bottom wall of hole 1 701, and the arc end of the block 18 on the outer pull tube 9 is in contact with the bottom wall of hole 2 801.

[0048] Furthermore, by arranging shaft three 13, middle spur gear 14, longitudinal rack 15, push seat 16, inclined groove 1601, cylindrical pin 17, block 18 and spring No. 3 19 for use in combination, the linear motion of the inner pull tube 7 and the middle pull tube 8 themselves can be converted into the up and down deflection motion of block two 91, block nine 92, block four 82 and block eight 83.

[0049] When the present invention is in use: when the noise in the trachea is too loud, first turn on the electric push rod 6, the piston rod of the electric push rod 6 extends downward and pushes the protrusion 5, so that the protrusion 5 is forced to drive the bottom plate 4 to move downward, and the bottom plate 4 pulls the inner pull tube 7, and the inner pull tube 7 is forced to move downward first. In this process, the bottom plate 4 continues to move away from the bottom wall of the medium pull tube 8, and at this time, the medium pull tube 8 is forced to move downward together with the inner pull tube 7. At this time, under the rebound force of the No. 1 spring 706, the lower pressure bar 705 drives the No. 1 rack 704 to move up and down together, and the No. 1 rack 704 acts on the No. 1 spur gear 703, so that the shaft 1 702 drives the block 3 71 and the block 5 72 to flip upward, and the block 6 73 and the block 7 74 to flip downward in turn, presenting as shown in the figure. Fig.11 At the same time, the bottom plate 4 releases the squeezing effect on the T-shaped push block 806, so that the T-shaped push block 806 drives the second rack 804 to move downward under the elastic force of the second spring 805, and the second rack 804 acts on the second spur gear 803, so that the shaft 802 drives the stopper 84 to turn downward and the stopper 81 to turn upward in turn, presenting as shown Fig.13As the inner pull tube 7 moves further downward, the middle pull tube 8 will be pulled downward together, so that the bottom wall of the hole 1 701 releases the squeezing force on the block 18 on the middle pull tube 8, and the bottom wall of the hole 2 801 releases the squeezing force on the block 18 on the outer pull tube 9. The block 18 drives the cylindrical pin 17 to move toward the direction of the third partition 12 under the elastic force of the third spring 19. The cylindrical pin 17 acts on the inclined groove 1601, so that the push seat 16 is forced to drive the longitudinal rack 15 to move up and down. The longitudinal rack 15 acts on the middle spur gear 14, so that the block eight 83 and the block nine 92 are turned downward, and the block four 82 and the block two 91 are turned upward. Fig.13 as well as Fig.15 As shown; at this time, the multiple blocks and the multiple partitions are as shown Fig.10 state, at this time, the gas needs to enter from the right side of hole three 901, pass through the first expansion chamber, the second expansion chamber and the third expansion chamber formed by block one 81, block two 91, block three 71, block four 82 and block five 72 in turn, and then pass through the slot at the bottom of the third partition 12 and enter the fourth expansion chamber, the fifth expansion chamber and the sixth expansion chamber formed by block six 73, block seven 74, block eight 83, block nine 92 and block ten 84, and finally enter the next installation pipe 22 through the left side of hole three 901, and repeat this process. By setting the block in the exhaust pipe, the gas will generate oscillation and turbulence when flowing through the block, thereby interfering with the propagation of sound waves and weakening the sound. The formation of multiple expansion chambers can eliminate sound waves multiple times, so that the sound energy gradually decays.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust device for a diesel generator set, comprising a body (1), an exhaust assembly arranged on the body (1), characterized in that: The exhaust assembly is wrapped with a cover body (3) on the outside, and the exhaust assembly includes a front pipe (21), multiple groups of additional pipes (22) and a rear pipe (23) in sequence. The multiple groups of additional pipes (22) are freely combined and spliced ​​with each other through a detachable structure; each group of additional pipes (22) is arranged to be through-connected on the left and right and an airway adjustment assembly is arranged inside, the airway adjustment assembly includes an inner pull pipe (7), a middle pull pipe (8) and an outer pull pipe (9), and the inner cavities of the multiple pull pipes are divided into a U-shaped channel structure by an isolation assembly, and the isolation assembly includes a first partition (10), a second partition (11) and a third partition (12); the upper end of the inner pull pipe (7) is inserted from the lower end of the additional pipe (22) and fixedly connected to the top wall of the inner cavity of the additional pipe (22), and the internal limit slide of the inner pull pipe (7) A medium-sized pull tube (8) is movably connected thereto, one end of the inner pull tube (7) is fixedly connected to the bottom plate (4), and the other end of the inner pull tube (7) is limitedly slidably inserted into the medium-sized pull tube (8), and the bottom plate (4) is driven by the main driving device and moves up and down in a straight line, so as to realize the telescopic action of the multiple pull tubes; a stopper three (71), a stopper five (72), a stopper six (73) and a stopper seven (74) are sequentially arranged on the inner side wall of the inner pull tube (7), a stopper one (81), a stopper four (82), a stopper eight (83) and a stopper ten (84) are sequentially arranged on the inner side wall of the medium-sized pull tube (8), and a stopper two (91) and a stopper nine (92) are sequentially arranged on the inner side wall of the outer pull tube (9), and the multiple stops are deflected up and down to form multiple expansion chambers in the U-shaped channel, so as to perform silencing treatment on the exhaust gas.

2. The exhaust device of a diesel generator set according to claim 1, characterized in that: A narrow rectangular cavity is provided on the inner side of the top wall of the installation tube (22), and a limit plate is slidably installed in the narrow rectangular cavity. One end of the No. 1 partition (10) is fixedly connected to the limit plate, and the other end of the No. 1 partition (10) extends into the outer pull tube (9). One end of the No. 2 partition (11) is slidably inserted into the No. 1 partition (10), and the other end of the No. 2 partition (11) extends into the middle pull tube (8). One end of the No. 3 partition (12) is slidably inserted into the No. 2 partition (11), and the other end of the No. 3 partition (12) passes through the inner pull tube (7) and is fixedly connected to the bottom plate (4), and the lower end of the No. 3 partition (12) is provided with a groove.

3. The exhaust device of a diesel generator set according to claim 1, characterized in that: The block 2 (91) and the two groups of block 1 (81) symmetrically arranged at its upper end and the second partition (11) form a first expansion chamber, the block 4 (82) and the two groups of block 3 (71) symmetrically arranged at its upper end and the third partition (12) form a second expansion chamber, the block 5 (72) and the third partition (12) form a third expansion chamber, the block 6 (73) and the third partition (12) form a fourth expansion chamber, the block 8 (83) and the two groups of block 7 (74) symmetrically arranged at its lower end and the third partition (12) form a fifth expansion chamber, and the block 9 (92) and the two groups of block 10 (84) symmetrically arranged at its lower end and the second partition (11) form a sixth expansion chamber.

4. The exhaust device of a diesel generator set according to claim 1, characterized in that: The stopper three (71) and the stopper seven (74) are provided in two groups and are symmetrically arranged on the front and rear sides of the inner wall of the inner pull tube (7); the stopper six (73) and the stopper five (72) are arranged on the left and right sides of the inner wall of the inner pull tube (7); the ends of the stopper three (71), the stopper five (72), the stopper six (73) and the stopper seven (74) are fixedly plugged with the shaft one (702); the shaft one (702) is fixedly sleeved with a No. 1 spur gear (703); each No. 1 spur gear (703) is driven to rotate by a group of first linkage components.

5. The exhaust device of a diesel generator set according to claim 4, characterized in that: The first linkage assembly comprises a No. 1 rack (704), a lower pressure bar (705) and a No. 1 spring (706); one end of the No. 1 rack (704) is meshedly connected to the No. 1 spur gear (703); the other end of the No. 1 rack (704) extends into the bottom plate (4) and is fixedly connected to the lower pressure bar (705); two groups of No. 1 springs (706) are fixedly arranged at the lower end of the lower pressure bar (705); one end of the lower pressure bar (705) away from the No. 1 rack (704) extends out of the inner draw tube (7) to the outside; and the portion of the lower pressure bar (705) extending out of the inner draw tube (7) is in contact with the bottom wall of the middle draw tube (8).

6. The exhaust device of a diesel generator set according to claim 1, characterized in that: The block one (81) and block ten (84) are provided in two groups and are symmetrically arranged on the front and rear sides of the inner wall of the medium pull tube (8); the block four (82) and block eight (83) are installed on the left and right sides of the inner wall of the inner pull tube (7); the ends of the block one (81) and block ten (84) away from each other are fixedly plugged with shaft two (802); the shaft two (802) is coaxially fixedly connected with a number two spur gear (803); each group of number two spur gears (803) is driven to rotate by a group of second linkage components.

7. The exhaust device of a diesel generator set according to claim 6, characterized in that: The second linkage assembly comprises a No. 2 rack (804), a No. 2 spring (805) and a T-shaped push block (806); the No. 2 rack (804) is limitedly slidably mounted on the medium pull tube (8); one end of the No. 2 rack (804) is meshedly connected to the No. 2 spur gear (803); the other end of the No. 2 rack (804) is fixedly connected to the T-shaped push block (806); one end of the T-shaped push block (806) is fixedly connected to the No. 2 spring (805); the other end of the T-shaped push block (806) extends out of the bottom wall of the medium pull tube (8) and is in contact with the upper end surface of the bottom plate (4).

8. The exhaust device of a diesel generator set according to claim 1, characterized in that: The stopper 2 (91) and the stopper 9 (92) are installed on the left and right sides of the inner wall of the outer pull tube (9), and the ends of the stopper 2 (91), the stopper 9 (92), the stopper 4 (82) and the stopper 8 (83) are fixedly connected with the shaft 3 (13), and the shaft 3 (13) is fixedly sleeved with a middle spur gear (14), and each group of the middle spur gears (14) is driven by a group of third linkage components, and a placement groove for accommodating the third linkage components is opened inside the medium pull tube (8) and the outer pull tube (9).

9. The exhaust device of a diesel generator set according to claim 8, characterized in that: The third linkage assembly comprises a longitudinal rack (15), a push seat (16), a cylindrical pin (17), a clamping block (18) and a third spring (19); one end of the longitudinal rack (15) is meshedly connected to the middle spur gear (14); the other end of the longitudinal rack (15) is fixedly connected to the push seat (16); an inclined groove (1601) is provided on the push seat (16); a cylindrical pin (17) is inserted into the inclined groove (1601); the cylindrical pin (17) is fixedly connected to the clamping block (18); one end of the clamping block (18) is fixedly connected to the third spring (19); the other end of the clamping block (18) is arranged in an arc shape and extends out of the placement groove; the arc end of the clamping block (18) on the middle pull tube (8) is in contact with the bottom wall of the first hole (701); the arc end of the clamping block (18) on the outer pull tube (9) is in contact with the bottom wall of the second hole (801).

10. The exhaust device of a diesel generator set according to claim 1, characterized in that: The main drive device comprises a protrusion (5) and an electric push rod (6); a rear end cover of the electric push rod (6) is fixedly arranged in the mounting tube (22); a piston rod of the electric push rod (6) extends downward and is fixedly connected to the protrusion (5); and the protrusion (5) is fixedly connected to the base plate (4).

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