Automatic exhaust pressure relief device of engine smoke exhaust pipe

Abstract

The utility model discloses an automatic exhaust pressure relief device for an engine smoke exhaust pipe, which comprises a smoke pipe, a butt joint pipe is convexly arranged on the smoke pipe, an exhaust pressure relief mechanism is in threaded connection with an opening of the butt joint pipe, a convex ring is arranged in the exhaust pressure relief mechanism, a sealing gasket is abutted against one side, far away from the butt joint pipe, of the convex ring, and a connecting rod is connected onto the sealing gasket. An abutting ring is integrally formed at the end, away from the sealing gasket, of the connecting rod, a compression spring is installed between the protruding ring and the abutting ring, the abutting end on the exhaust and pressure relief mechanism can be inserted into the abutting channel in the abutting pipe, and the abutting pipe and the exhaust and pressure relief mechanism are connected and fixed through mutual meshing of the internal thread and the external thread. And through a filter screen arranged on the exhaust pressure relief mechanism, impurities can be well filtered when exhaust pressure relief is performed on the smoke pipe, so that the impurities are prevented from entering a convex ring and a sealing gasket to cause filth blockage, only the filter screen needs to be cleaned regularly, and the operation efficiency during maintenance of the exhaust pressure relief mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat power generation equipment, specifically to an automatic exhaust and pressure relief device for engine exhaust pipes. Background Technology

[0002] Waste heat power generation utilizes the heat from cylinder liner water and flue gas for heat exchange. A heat exchanger is installed in the main flue gas pipeline. During normal operation, the main pipeline valve is open, and the bypass valve is closed to achieve heat exchange. However, in actual use, valve malfunction or water leakage from the heat exchanger may occur, leading to increased engine exhaust pressure or water leakage into the engine, ultimately causing generator set failure and shutdown.

[0003] Patent CN209510430U discloses an automatic exhaust and pressure relief device for engine exhaust pipes, belonging to the field of waste heat power generation. It includes a generator set, with a main exhaust pipe connected to a plate heat exchanger. The upper end of the main exhaust pipe is connected to a chimney. A bypass is located on one side of the main exhaust pipe, with a valve on the bypass. An exhaust port is located on the main exhaust pipe, equipped with an automatic pressure relief and exhaust device. A cylinder liner water circulation system is located on one side of the generator set, connected to a plate heat exchanger. A hot water circulation system connects the plate heat exchanger to the first plate heat exchanger and the second plate heat exchanger.

[0004] However, the device lacks a disassembly and assembly mechanism for the exhaust pressure relief mechanism. Therefore, when the pressure relief device is damaged, it is not possible to quickly replace or repair the exhaust pressure relief mechanism, which can easily lead to excessive internal pressure and damage to the device. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an automatic exhaust and pressure relief device for engine exhaust pipes, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic exhaust pressure relief device for an engine exhaust pipe, comprising an exhaust pipe, a connecting pipe protruding from the exhaust pipe, an exhaust pressure relief mechanism threadedly connected to the opening of the connecting pipe, a convex ring provided inside the exhaust pressure relief mechanism, a sealing gasket abutting the side of the convex ring away from the connecting pipe, a connecting rod connected to the sealing gasket, an abutting ring integrally formed at the end of the connecting rod away from the sealing gasket, and a compression spring installed between the convex ring and the abutting ring, one end of the compression spring abutting the convex ring, and the other end of the compression spring abutting the abutting ring.

[0009] Preferably, the exhaust pressure relief mechanism has a protruding docking end, and the connecting pipe has a docking channel adapted to the docking end.

[0010] Preferably, the docking channel has an internal thread, and the outer surface of the docking end has an external thread that matches the internal thread.

[0011] Preferably, a filter screen is fastened to the port of the docking end, and a plurality of fastening blocks are protruding from the filter screen and arranged at intervals along the circumferential direction.

[0012] Preferably, the filter screen is provided with a plurality of insertion rods arranged at intervals along the circumferential direction, and the port of the docking end is provided with a plurality of insertion holes adapted to the insertion rods.

[0013] Preferably, the exhaust pressure relief mechanism is provided with a reset slide groove, a reset slider is slidably arranged in the reset slide groove, a locking rod is protruding on the reset slider, and a locking hole adapted to the locking rod is provided at the port of the connecting pipe.

[0014] Preferably, a reset spring is provided inside the reset groove, with one end of the reset spring abutting against the inner wall of the reset groove and the other end of the reset spring abutting against the reset slider.

[0015] Compared with the prior art, this utility model provides an automatic exhaust pressure relief device for engine exhaust pipes, which has the following beneficial effects: This utility model, through the mutual cooperation of the provided docking end and the connecting pipe, allows the docking end on the exhaust pressure relief mechanism to be inserted into the docking channel on the connecting pipe, and the connection and fixation between the connecting pipe and the exhaust pressure relief mechanism is achieved through the mutual meshing of the internal and external threads. The filter screen provided on the exhaust pressure relief mechanism can effectively filter impurities when exhausting and relieving pressure in the exhaust pipe, thereby preventing debris from entering the convex ring and sealing gasket and causing dirt blockage. Only periodic cleaning of the filter screen is required, which improves the operational efficiency of maintenance of the exhaust pressure relief mechanism. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a side sectional view of the structure of the flue pipe and exhaust pressure relief mechanism of this utility model.

[0018] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a top cross-sectional view of the docking end and connecting pipe of this utility model.

[0020] The components include: 1. flue pipe; 2. connecting pipe; 3. exhaust pressure relief mechanism; 4. docking end; 5. filter screen; 6. fastener; 7. docking channel; 8. insertion hole; 9. insertion rod; 10. convex ring; 11. sealing gasket; 12. connecting rod; 13. abutment ring; 14. compression spring; 15. reset slide groove; 16. reset spring; 17. reset slider; and 18. locking hole. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-4 An automatic exhaust pressure relief device for an engine exhaust pipe includes an exhaust pipe 1, a connecting pipe 2 protruding from the exhaust pipe 1, an exhaust pressure relief mechanism 3 threadedly connected to the opening of the connecting pipe 2, a protruding ring 10 inside the exhaust pressure relief mechanism 3, a sealing gasket 11 abutting the side of the protruding ring 10 away from the connecting pipe 2, a connecting rod 12 connected to the sealing gasket 11, an abutting ring 13 integrally formed at the end of the connecting rod 12 away from the sealing gasket 11, a compression spring 14 installed between the protruding ring 10 and the abutting ring 13, one end of the compression spring 14 abutting the protruding ring 10, and the other end of the compression spring 14 abutting the abutting ring 13, a docking end 4 protruding from the exhaust pressure relief mechanism 3, a docking channel 7 adapted to the docking end 4 being opened inside the connecting pipe 2, an internal thread being opened inside the docking channel 7, and an external thread adapted to the internal thread being opened on the outer surface of the docking end 4.

[0025] The connection between the exhaust pressure relief mechanism 3 and the exhaust pressure relief mechanism 3 can be achieved by inserting the mating end 4 on the mating channel 7 on the mating pipe 2 and by the mutual meshing of the internal and external threads. The filter screen 5 set on the exhaust pressure relief mechanism 3 can effectively filter impurities when exhausting and relieving the flue gas pipe 1, thereby preventing debris from entering the convex ring 10 and the sealing gasket 11 and causing dirt blockage. Only the filter screen 5 needs to be cleaned periodically, which improves the operational efficiency of maintaining the exhaust pressure relief mechanism 3.

[0026] Specifically, in this embodiment, a filter screen 5 is fastened to the port of the docking end 4, and multiple fastening blocks 6 are protruding on the filter screen 5 and arranged at intervals along the circumferential direction.

[0027] The buckle 6 on the filter screen 5 makes it easy to remove the filter screen 5 from the exhaust pressure relief mechanism 3 after the exhaust pressure relief mechanism 3 is removed, by using the buckle 6.

[0028] Specifically, in this embodiment, the filter screen 5 is provided with a plurality of insertion rods 9 arranged at intervals along the circumferential direction, and the port of the docking end 4 is provided with a plurality of insertion holes 8 that are adapted to the insertion rods 9.

[0029] The insertion rod 9 and the insertion hole 8 work together to restrict the installation position of the filter screen 5 and provide a certain limiting effect for the filter screen 5.

[0030] Specifically, in this embodiment, the exhaust pressure relief mechanism 3 is provided with a reset slide groove 15, a reset slider 17 is slidably arranged in the reset slide groove 15, a locking rod is protruding on the reset slider 17, a locking hole 18 adapted to the locking rod is provided at the port of the connecting pipe 2, a reset spring 16 is provided in the reset slide groove 15, one end of the reset spring 16 abuts against the inner wall of the reset slide groove 15, and the other end of the reset spring 16 abuts against the reset slider 17.

[0031] Through the cooperation of the reset slider 17, the locking rod and the reset spring 16, after the connecting pipe 2 and the exhaust pressure relief mechanism 3 are connected, the locking rod and the locking hole 18 are on the same vertical axis. Thus, the spring force of the reset spring 16 makes the reset slider 17 always press against the inner wall of the reset groove 15, and the locking rod on the reset slider 17 presses against the locking hole 18, thereby realizing the locking and fixing between the connecting pipe 2 and the exhaust pressure relief mechanism 3, and preventing the threaded connection between the exhaust pressure relief mechanism 3 and the connecting pipe 2 from loosening.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic exhaust and pressure relief device for an engine exhaust pipe, comprising an exhaust pipe, characterized in that: The flue pipe is provided with a connecting pipe, and the opening of the connecting pipe is threadedly connected to an exhaust pressure relief mechanism. The exhaust pressure relief mechanism is provided with a convex ring. The side of the convex ring away from the connecting pipe is abutted against a sealing gasket. A connecting rod is connected to the sealing gasket. The end of the connecting rod away from the sealing gasket is integrally formed with an abutting ring. A compression spring is installed between the convex ring and the abutting ring. One end of the compression spring abuts against the convex ring, and the other end of the compression spring abuts against the abutting ring.

2. The automatic exhaust and pressure relief device for an engine exhaust pipe according to claim 1, characterized in that: The exhaust pressure relief mechanism has a protruding docking end, and the connecting pipe has a docking channel that matches the docking end.

3. The automatic exhaust and pressure relief device for an engine exhaust pipe according to claim 2, characterized in that: The docking channel is provided with an internal thread, and the outer surface of the docking end is provided with an external thread that matches the internal thread.

4. The automatic exhaust and pressure relief device for an engine exhaust pipe according to claim 2, characterized in that: A filter screen is fastened to the port of the docking end, and multiple fastening blocks are protruding from the filter screen and arranged at intervals along the circumference.

5. The automatic exhaust and pressure relief device for an engine exhaust pipe according to claim 4, characterized in that: The filter screen is provided with a plurality of insertion rods arranged at intervals along the circumference, and the port of the docking end is provided with a plurality of insertion holes that are adapted to the insertion rods.

6. The automatic exhaust and pressure relief device for an engine exhaust pipe according to claim 1, characterized in that: The exhaust pressure relief mechanism is provided with a reset groove, and a reset slider is slidably arranged in the reset groove. A locking rod is protruding on the reset slider, and a locking hole that matches the locking rod is provided at the port of the connecting pipe.

7. The automatic exhaust and pressure relief device for an engine exhaust pipe according to claim 6, characterized in that: A reset spring is provided inside the reset groove. One end of the reset spring abuts against the inner wall of the reset groove, and the other end of the reset spring abuts against the reset slider.

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