Exhaust pressure stabilizing device

Abstract

The application discloses an exhaust gas pressure stabilizing device, which is used for connecting to an exhaust port of a special diesel engine and comprises a body and a volume adjusting mechanism. The body is provided with a tail gas inlet for receiving tail gas from the exhaust port and a tail gas outlet for discharging the tail gas, and the body has a buffer cavity inside for buffering the pressure of the tail gas; the volume adjusting mechanism is connected with the body and is configured to adjust the volume of the buffer cavity. Thus, the buffer cavity provided on the body can receive and temporarily store the tail gas from the special diesel engine, can discharge the tail gas after stabilizing the pressure of the tail gas, can reduce the influence of the external environment on the special diesel engine, and can make the special diesel engine output stable power. In addition, the volume adjusting mechanism can adjust the volume of the buffer cavity according to different tail gas discharge amounts of the special diesel engine, so that the exhaust gas pressure stabilizing device can adapt to diesel engines of various different models.

Description

Technical Field

[0001] This invention relates to the technical field of diesel engine exhaust gas treatment, and more specifically to an exhaust pressure stabilizing device. Background Technology

[0002] Diesel engines generate mechanical energy by burning diesel fuel, providing significant torque. Some specialized diesel engines are frequently used in unusual environments, such as those with pressures far exceeding or below atmospheric pressure. When the external environment changes, the exhaust resistance of the diesel engine may increase, leading to poor exhaust flow and fluctuations in exhaust pressure. This can cause unstable engine operation and affect the intake system, ultimately resulting in inconsistent power output.

[0003] Due to the unstable air pressure in the external environment, and the large difference between the highest and lowest values ​​of the external air pressure, the exhaust emissions of the diesel engine are affected, which in turn seriously affects the working condition of the diesel engine.

[0004] Therefore, there is a need to provide an exhaust pressure stabilizing device to at least partially solve the above problems. Summary of the Invention

[0005] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] This invention provides an exhaust pressure stabilizing device, which is used to connect to the exhaust port of a special diesel engine. The exhaust pressure stabilizing device includes:

[0007] The body, having an exhaust gas inlet for receiving exhaust gas from the exhaust port and an exhaust gas outlet for discharging exhaust gas, and having an internal buffer chamber for buffering exhaust gas pressure; and

[0008] A volume adjustment mechanism is connected to the main body and configured to adjust the volume of the buffer cavity.

[0009] Optionally, the exhaust gas inlet is located below the exhaust gas outlet in the height direction of the body.

[0010] Optionally, the volume adjustment mechanism is configured as a partition and a rotary drive member disposed in the buffer cavity, wherein the rotary drive member can drive the partition to rotate to adjust the volume of the buffer cavity.

[0011] Optionally, the tail gas inlet and the tail gas outlet are located on the same side of the partition plate when the buffer cavity is adjusted to the minimum volume by the partition plate.

[0012] Optionally, the body comprises an air inlet part and an air outlet part, the tail gas inlet is arranged on the air inlet part, and the tail gas outlet is arranged on the air outlet part.

[0013] Optionally, the air inlet part is configured as a cylindrical structure with one end closed and the other end open, and the tail gas inlet is arranged on the side of the air inlet part; and / or

[0014] the air outlet part is configured as a cylindrical structure with one end closed and the other end open, and the tail gas outlet is arranged on the side of the air outlet part.

[0015] Optionally, the volume adjusting mechanism is configured as a buffer pipeline connecting the air inlet part and the air outlet part.

[0016] Optionally, the volume adjusting mechanism is configured as a moving pipeline fixedly connected with the air outlet part, the moving pipeline is at least partially located inside the air inlet part and is movable relative to the air inlet part.

[0017] Optionally, the exhaust pressure stabilizing device further comprises a track driving mechanism capable of driving the air outlet part to move relative to the air inlet part, the track driving mechanism comprises:

[0018] a track base;

[0019] a fixed seat, one end of the fixed seat being fixedly connected with the air outlet part and the other end being slidingly connected with the track base; and

[0020] a track driving member arranged on the track base and capable of driving the fixed seat to move.

[0021] Optionally, an end of the moving pipeline is provided with a sealing member.

[0022] The exhaust pressure stabilizing device according to the present application comprises a body and a volume adjusting mechanism, a buffer cavity arranged on the body is capable of receiving and temporarily storing tail gas from a special diesel engine, and is capable of discharging the tail gas after stabilizing the pressure of the tail gas, so as to reduce the influence of external environment on the special diesel engine and enable the special diesel engine to stably output power. In addition, the volume adjusting mechanism is capable of adjusting the volume of the buffer cavity according to different tail gas discharge amounts of the special diesel engine, so that the exhaust pressure stabilizing device can be adapted to diesel engines of various models. BRIEF DESCRIPTION OF DRAWINGS

[0023] The following drawings for the present application are hereby incorporated into this specification as part of the present application for the purpose of understanding the present application. The drawings of the embodiments of the present application and their description are shown in the drawings to explain the principles of the present application.

[0024] In the drawings:

[0025] Figure 1 Structure diagram of an exhaust pressure stabilizing device according to a first embodiment of the present application;

[0026] Figure 2 Structure diagram of another state of the exhaust pressure stabilizing device shown in Figure 1

[0027] Figure 3 Structure diagram of an exhaust pressure stabilizing device according to a second embodiment of the present application;

[0028] Figure 4 Structure diagram of another state of the exhaust pressure stabilizing device shown in Figure 3

[0029] Figure 5 Structure diagram of an exhaust pressure stabilizing device according to a third embodiment of the present application; and

[0030] Figure 6 Structure diagram of another state of the exhaust pressure stabilizing device shown in Figure 5

[0031] Explanation of reference numerals:

[0032] 100: exhaust pressure stabilizing device 110: main body

[0033] 111: tail gas inlet 112: tail gas outlet

[0034] 121: partition 122: rotary driving member

[0035] 130: buffer cavity

[0036] 200: exhaust pressure stabilizing device 210: gas inlet part

[0037] 211: tail gas inlet 220: gas outlet part

[0038] 221: tail gas outlet 230: buffer pipeline

[0039] 240: buffer cavity

[0040] 300: exhaust pressure stabilizing device 310: gas inlet part

[0041] 311: tail gas inlet 320: gas outlet part

[0042] 321: tail gas outlet 331: track base​​​

[0043] 332: Fixed base; 333: Track drive component

[0044] 334: Moving pipe; 340: Buffer chamber Detailed Implementation

[0045] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the invention.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0047] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, the same reference numerals denote the same elements, and therefore their description will be omitted.

[0048] This invention provides an exhaust pressure stabilizing device that can be connected to the exhaust port of a special diesel engine and can be used to stabilize the pressure of the exhaust gas emitted by the special diesel engine. The following will refer to... Figures 1 to 6 As shown, an exhaust pressure stabilizing device according to several preferred embodiments of the present invention will be described in detail.

[0049] like Figure 1 and Figure 2As shown, in the first embodiment according to the present application, an exhaust pressure stabilizing device 100 is provided, which comprises a body 110 and a volume adjusting mechanism. The body 110 is provided with an exhaust inlet 111 and an exhaust outlet 112, the exhaust inlet 111 is capable of receiving exhaust from an exhaust port of a special diesel engine, and the exhaust outlet 112 is capable of discharging exhaust. The body 110 further has a buffer cavity 130 inside for buffering the pressure of the exhaust, and the exhaust inlet 111 and the exhaust outlet 112 are both communicated with the buffer cavity 130. In use, the received exhaust can be temporarily stored in the buffer cavity 130, and after the pressure of the exhaust is stabilized, the exhaust in the buffer cavity 130 is discharged through the exhaust outlet 112. It can be understood that the volume of the buffer cavity 130 can be set according to the exhaust emission of the special diesel engine per unit time, and the volume of the buffer cavity 130 is much larger than the exhaust emission of the special diesel engine per unit time, so as to buffer the exhaust emission.

[0050] The volume adjusting mechanism is connected with the body 110 and is configured to adjust the volume of the buffer cavity 130. Since the exhaust emission of different special diesel engines per unit time is different, in order to make the exhaust pressure stabilizing device 100 adapt to diesel engines of various models, the exhaust pressure stabilizing device 100 in the present application can adjust the volume of the buffer cavity 130 through the volume adjusting mechanism.

[0051] According to the exhaust pressure stabilizing device of the present application, the buffer cavity 130 provided on the body 110 can receive and temporarily store exhaust from a special diesel engine, and can discharge the exhaust after the pressure of the exhaust is stabilized, so as to reduce the influence of the external environment on the special diesel engine, and make the special diesel engine output stable power. In addition, the volume adjusting mechanism can adjust the volume of the buffer cavity 130 according to different exhaust emission of the special diesel engine, so that the exhaust pressure stabilizing device can adapt to diesel engines of various models.

[0052] In order to better discharge the exhaust, as shown, Figure 1 In the present embodiment, the exhaust inlet 111 is located below the exhaust outlet 112 in the height direction of the body 110 (i.e., the radial direction of the body 110 in the illustrated embodiment), so that the exhaust from the exhaust port can first enter the exhaust pressure stabilizing device 100 from a lower position, and then be discharged from a higher position, which is convenient for buffering the pressure of the exhaust.

[0053] As shown, Figure 1 and Figure 2As shown, the volume adjusting mechanism in the embodiment is configured as a partition 121 arranged in the buffer chamber 130 and a rotary driving member 122 capable of driving the partition 121 to rotate so as to adjust the volume of the buffer chamber 130. For example, the rotary driving member 122 can be arranged at a position close to the center of the buffer chamber 130, the partition 121 is connected with the rotary driving member 122 at the center position thereof, and the rotary driving member 122 is capable of driving the partition 121 to rotate about a pivot axis parallel to the horizontal direction (i.e. the axial direction of the body 110 in the illustrated embodiment). When the partition 121 is rotated to be parallel to the vertical plane (the radial cross section of the body 110), the upper and lower ends and the left and right edges of the partition 121 are close to or even contact the inner wall of the body 110, respectively, so as to divide the buffer chamber 130 into two approximately independent receiving spaces on the left and right sides, respectively, and the received exhaust gas can only be stored in the receiving space on the left side of the buffer chamber 130, and at this time, the buffer chamber 130 has the minimum volume. Correspondingly, in the state that the buffer chamber 130 has the minimum volume, the exhaust gas inlet 111 and the exhaust gas outlet 112 are located on the same side of the partition 121, so as to facilitate the smooth discharge of the exhaust gas after being stabilized. In addition, when the partition 121 is rotated to be inclined to or even perpendicular to the vertical plane (i.e. parallel to the horizontal plane), the entire buffer chamber 130 is communicated, and at this time, the buffer chamber 130 has the maximum volume. It can be understood that the shape of the partition 121 in the embodiment is the same as the shape of the inner cross section of the body 110, so as to sufficiently divide the buffer chamber 130 into two approximately sealed receiving spaces when the partition 121 is rotated to be parallel to the vertical plane.

[0054] It can be understood that the rotary driving member needs to drive the partition to rotate so as to divide the buffer chamber into two approximately independent receiving spaces when the partition is rotated to a certain position, so that the received exhaust gas can only be stored in one of the receiving spaces, thereby adjusting the volume of the buffer chamber. In other embodiments not shown, the rotary driving member can also drive the partition to rotate about a pivot axis inclined to or even perpendicular to the horizontal direction, as long as it can ensure that the partition divides the buffer chamber into two independent receiving spaces when the partition is rotated to a certain position.

[0055] For the exhaust gas pressure stabilizing device 100 in the embodiment, when the partition 121 is perpendicular to the exhaust gas pressure stabilizing device 100, the buffer chamber 130 is divided into two receiving spaces, and the received exhaust gas is only buffered in one of the receiving spaces, and at this time, the buffer chamber 130 has the minimum volume.

[0056] In addition, the rotary driving member 122 can drive the partition 121 to rotate by means of electricity, gas or liquid pressure, of course, the rotary driving member 122 can also drive the partition 121 to rotate by means of manual operation.

[0057] In the second embodiment according to the present application, asFigure 3 and Figure 4 As shown, the main body may include an air intake section 210 and an air outlet section 220, with an exhaust gas inlet 211 disposed on the air intake section 210 and an exhaust gas outlet 221 disposed on the air outlet section 220.

[0058] Furthermore, the air intake 210 and the air outlet 220 are respectively disposed on the left and right sides in the horizontal direction. The air intake 210 can be constructed as a cylindrical structure with one end closed and the other end open, and the exhaust gas inlet 211 can be disposed on the side of the cylindrical structure with the opening facing downward. Preferably, the closed end of the air intake 210 can be constructed as a hemispherical shape. Correspondingly, the air outlet 220 can also be constructed as a cylindrical structure with one end closed and the other end open, and the exhaust gas outlet 221 can be disposed on the side of the cylindrical structure with the opening facing upward. Preferably, the closed end of the air outlet 220 can also be constructed as a hemispherical shape.

[0059] Specifically, such as Figure 3 As shown, the volume adjustment mechanism in this embodiment is constructed as a buffer pipe 230. The buffer pipe 230 is constructed as a ring structure with openings at both ends, and is disposed between the air inlet 210 and the air outlet 220. The inner cavity of the air inlet 210, the inner cavity of the buffer pipe 230, and the inner cavity of the air outlet 220 together form a buffer chamber 240.

[0060] Because special diesel engines have different exhaust volumes, in order to adjust the volume of the buffer chamber 240, in this embodiment, the volume of the buffer chamber 240 of the exhaust pressure regulating device 200 can be adjusted by changing the number of buffer pipes 230 between the intake section 210 and the exhaust section 220. For example, when the exhaust volume of the diesel engine requiring buffering is large, the exhaust pressure regulating device 200 can be provided with three or more buffer pipes 230; when the exhaust volume of the diesel engine requiring buffering is small, the exhaust pressure regulating device 200 can be provided with one or two buffer pipes 230. Figure 3 The exhaust pressure stabilizing device 200 shown is equipped with two buffer pipes 230. Furthermore, as... Figure 4 As shown, if the displacement of the diesel engine that needs buffering is too small, the exhaust pressure stabilizing device 200 can also directly connect the intake section 210 and the exhaust section 220, so that the opening of the intake section 210 is directly connected to the opening of the exhaust section 220, that is, no buffer pipe 230 is set between the intake section 210 and the exhaust section 220.

[0061] In the third embodiment of the present invention, such as Figure 5 and Figure 6 As shown, the volume adjustment mechanism can be configured as a movable pipe 334 fixedly connected to the air outlet 320, the movable pipe 334 being at least partially located inside the air inlet 310 and movable relative to the air inlet 310.

[0062] Specifically, the moving pipe 334 can be configured as a cylindrical structure with both ends open, and the outer diameter of the moving pipe 334 is slightly smaller than the outer diameter of the air inlet portion 310, so that the moving pipe 334 can be conveniently inserted into the air inlet portion 310. The moving pipe 334 is arranged at the opening of the air inlet portion 310, and the air outlet portion 320 can move left and right relative to the air inlet portion 310, so that the moving pipe 334 can also at least partially extend into the air inlet portion 310 and move left and right.

[0063] For example, as shown in Figure 5 When the end of the moving pipe 334 away from the air outlet portion 320 is located at the closest position to the opening of the air inlet portion 310, the inner cavity of the air inlet portion 310, the inner cavity of the moving pipe 334, and the inner cavity of the air outlet portion 320 together form the buffer cavity 340, at which time the buffer cavity 340 has the largest volume. When it is necessary to reduce the volume of the buffer cavity 340, the air outlet portion 320 can be moved left relative to the air inlet portion 310, and the moving pipe 334 gradually extends into the air inlet portion 310. As shown in Figure 6 When the moving pipe 334 moves left to completely extend into the air inlet portion 310, the opening of the air inlet portion 310 and the opening of the air outlet portion 320 are in contact, and the inner cavity of the air inlet portion 310 and the inner cavity of the air outlet portion 320 together form the buffer cavity 340, at which time the buffer cavity 340 has the smallest volume. That is, the exhaust pressure stabilizing device 300 in the present embodiment can move the air outlet portion 320 relative to the air inlet portion 310 to adjust the volume of the buffer cavity 340.

[0064] In order to better control the movement of the air outlet portion 320, the exhaust pressure stabilizing device 300 in the present embodiment further comprises a track driving mechanism, which can drive the air outlet portion 320 to move relative to the air inlet portion 310. Specifically, as shown in Figure 5 and Figure 6 The track driving mechanism comprises a track base 331, a fixed seat 332, and a track driving member 333. The track base 331 has a sliding track (not shown) parallel to the moving direction of the air outlet portion 320, the fixed seat 332 is used to connect the air outlet portion 320 and the track base 331, one end of the fixed seat 332 is fixedly connected with the air outlet portion 320, and the other end is slidingly connected with the track base 331, and the track driving member 333 is arranged on the track base 331 and can drive the fixed seat 332 to move along the track on the track base 331, so that the track driving member 333 can indirectly drive the air outlet portion 320 to move relative to the air inlet portion 310. For example, the track driving member 333 can be configured as a pneumatic cylinder type or a gear type moving mechanism.

[0065] In addition, in order to ensure that the moving pipe 334 has sufficient sealing effect with the air inlet part 310 during movement, the end of the moving pipe 334 away from the air outlet part 320 is provided with a sealing member (not shown). The end of the moving pipe 334 away from the air outlet part 320 has a flange extending outward along the circumference thereof, and the sealing member can be arranged on the flange. When the air outlet part 320 moves relative to the air inlet part 310, the sealing member arranged on the moving pipe 334 can be in contact with the inner wall of the air inlet part 310, thereby playing a sealing role. Exemplarily, the sealing member can be configured as a ring-shaped sealing ring with elasticity.

[0066] The present application has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and illustration, and are not intended to limit the present application to the scope of the described embodiments. Furthermore, those skilled in the art can understand that the present application is not limited to the above embodiments, and more various modifications and changes can be made according to the teachings of the present application, which all fall within the scope of the present application. The scope of protection of the present application is defined by the attached claims and their equivalent scope.

Claims

1. An exhaust pressure stabilizing device, characterized in that, The exhaust pressure stabilizing device is used to connect to the exhaust port of the diesel engine, and the exhaust pressure stabilizing device includes: The body has an exhaust gas inlet for receiving exhaust gas from the exhaust port and an exhaust gas outlet for discharging exhaust gas. The interior of the body has a buffer chamber for temporarily storing the exhaust gas and for buffering exhaust gas pressure. A volume adjustment mechanism is connected to the main body and configured to adjust the volume of the buffer cavity. The exhaust gas inlet is located below the exhaust gas outlet in the height direction of the main body. Both the exhaust gas inlet and the exhaust gas outlet are connected to the buffer chamber. The exhaust gas outlet is used to discharge the exhaust gas with stable pressure in the buffer chamber. Furthermore, the volume adjustment mechanism is constructed as a partition and a rotary drive member disposed in the buffer cavity. The rotary drive member drives the partition to rotate about a pivot axis parallel to, inclined to, or perpendicular to the horizontal plane to adjust the volume of the buffer cavity. The partition is completely located inside the buffer cavity, and the shape of the partition is the same as the shape of the inner cross-section of the body, so that the partition can be rotated to a position that divides the buffer cavity into two independent receiving spaces. The received exhaust gas is only buffered in one of the receiving spaces. At this time, the buffer cavity has a minimum volume. The exhaust gas inlet and the exhaust gas outlet are located on the same side of the partition when the partition adjusts the buffer cavity to the minimum volume.

2. The exhaust pressure stabilizing device according to claim 1, characterized in that, The rotary drive component drives the partition to rotate via electric, pneumatic, or hydraulic means.

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