A gas preheating device for a gas generator set

Abstract

The utility model discloses a gas preheating device for gas generating set, including air inlet pipe, the last fixed connection groove of air inlet pipe, the sliding connection U-shaped board in groove, the sliding connection filter plate in U-shaped board, the outside fixed connection sealing plate of U-shaped board, the outside sliding connection of sealing plate and groove, the inside of sealing plate penetrates sunken head hole, and the fixed part of rotation sleeve is equipped in sunken head hole, and fixed part is connected with groove thread, the right side fixed connection joint of groove, the right side fixed connection outer tube of joint, the inside fixed connection inner tube of outer tube, be equipped with heating element in inner tube, and the last fixed connection air outlet pipe of outer tube. The utility model discloses a detachable U-shaped filter plate is set up in the air inlet pipe last, effectively intercepts the impurity in gas, avoids the heat conduction performance of preheating pipe to be affected by the impurity accumulation, and filter plate is installed through the snap groove and the slide of clamping block, and the guide structure of cooperation sealing plate can be quickly pulled and cleaned or replaced, need not to dismantle the pipeline, and the maintenance is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of gas generator set technology, and in particular to a gas preheating device for gas generator sets. Background Technology

[0002] Gas generator sets are a new type of high-efficiency new energy generator set that uses liquefied petroleum gas (LPG), natural gas, or other combustible gases as fuel, replacing gasoline and diesel as engine power. Gas generator sets have advantages such as a wide output power range, high reliability in starting and operation, good power generation quality, light weight, small size, simple maintenance, and low-frequency noise.

[0003] Patent publication number CN217582335U discloses a gas preheating device for a gas generator set, including an outer preheating pipe with an inner preheating pipe running through it. A gas flow channel is provided between the inner wall of the outer preheating pipe and the outer wall of the inner preheating pipe. One end of the outer preheating pipe is connected to an inlet pipe via a flange, and the other end is connected to an outlet pipe via a flange. The inner preheating pipe has a guide cone at the end near the inlet pipe and a cover at the end near the outlet pipe. A spiral electric heating wire is installed inside the inner preheating pipe. Sufficient preheating of the gas is achieved through both internal and external paths, making the preheating process safe and efficient. However, this patent lacks a filter structure at the outlet end of the inlet pipe. Impurities in the gas enter the preheating pipe along with the gas and accumulate there, affecting the thermal conductivity of the preheating pipe. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a gas preheating device for gas generator sets.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a gas preheating device for a gas generator set, comprising an air inlet pipe, the end of which is fixedly connected to a groove, a U-shaped plate slidably connected inside the groove, a filter plate slidably connected inside the U-shaped plate, a sealing plate fixedly connected to the outside of the U-shaped plate, the sealing plate slidably connected to the outside of the groove, a countersunk hole penetrating the inside of the sealing plate, a fixing member rotatably sleeved inside the countersunk hole, the fixing member being threadedly connected to the groove, a joint fixedly connected to the right side of the groove, an outer pipe fixedly connected to the right side of the joint, an inner pipe fixedly connected inside the outer pipe, a heating element provided in the inner pipe, and an air outlet pipe fixedly connected to the end of the outer pipe.

[0006] As a further description of the above technical solution: the heating element includes a spiral heating wire disposed inside the inner tube, and a conical head and a plug are respectively threaded to both ends of the inner tube. The conical head is located on one side of the air inlet pipe, and two support rods are symmetrically fixed to both ends of the inner tube. The support rods are fixed to the inner wall of the outer tube.

[0007] As a further description of the above technical solution: the outer tube is fixedly connected to a spiral fin, the outer tube is provided with a cavity, and a plurality of vertically symmetrical baffles are fixedly connected to the cavity. The baffles are obliquely distributed in the cavity. The outer tube is fixedly connected to an exhaust gas inlet and an exhaust gas outlet, and both the exhaust gas inlet and the exhaust gas outlet are connected to the cavity.

[0008] As a further description of the above technical solution: slots are opened on both sides of the inner wall of the U-shaped plate, and a card block is slidably connected in the slot, and the card block is fixedly connected to the filter plate.

[0009] As a further description of the above technical solution: blind holes are opened at the outer corners of the groove, and guide rods are slidably connected in the blind holes, and the guide rods are fixedly connected to the sealing plate.

[0010] As a further description of the above technical solution: two guide grooves are symmetrically opened on the inner wall of the blind hole, a guide block is slidably connected in the guide groove, the guide block is fixedly connected to the guide rod, and a spring is fixed between the inner wall of the guide groove and the guide block.

[0011] As a further description of the above technical solution: the fixing component includes a connecting rod passing through the countersunk hole, one end of the connecting rod is fixedly connected to a screw block, and the other end is fixedly connected to a threaded block. A threaded groove is opened on the outside of the groove body, and the threaded block is threadedly connected in the threaded groove. A rubber sheet is fixedly connected to the inner side of the sealing plate. The rubber sheet passes through the through hole and the through groove respectively. The rubber sheet is fixedly sleeved on the outer edge of the U-shaped plate, the guide rod and the connecting rod through the through groove and the through hole.

[0012] This utility model has the following beneficial effects:

[0013] 1. Compared with existing technologies, this gas preheating device for gas generator sets effectively intercepts impurities in the gas by installing a detachable U-shaped filter plate at the end of the intake pipe, preventing impurities from accumulating and affecting the thermal conductivity of the preheating pipe. The filter plate is slidably installed through slots and blocks, and with the guide structure of the sealing plate, it can be quickly pulled out for cleaning or replacement without disassembling the pipe, making maintenance simple. The sealing plate achieves dynamic compression sealing through spring guide rods and rubber sheets to prevent gas leakage; the threaded connection of the fasteners further strengthens the stability of the filter structure.

[0014] 2. Compared with the prior art, the gas preheating device for gas generator sets allows the gas to fully absorb the direct heat from the electric heating wire in the inner tube through the spiral fin channel between the outer and inner tubes. At the same time, the exhaust heat from the engine introduced at the exhaust gas inlet is used to preheat the gas in the cavity, thereby improving thermal efficiency. The obliquely symmetrically distributed baffles extend the gas flow path, enhance the heat exchange effect, and ensure that the gas temperature rises uniformly. The spiral heating wire is built into the inner tube, and both ends are sealed by conical heads and plugs to avoid direct contact with the gas. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of a gas preheating device for a gas generator set proposed in this utility model.

[0016] Figure 2 This is a main sectional view of the overall structure of a gas preheating device for a gas generator set proposed in this utility model;

[0017] Figure 3 This is a side sectional view of the overall structure of the tank body for a gas preheating device for a gas generator set proposed in this utility model;

[0018] Figure 4 This utility model proposes a gas preheating device for gas generator sets. Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 5 This utility model proposes a gas preheating device for gas generator sets. Figure 2 Enlarged view of the structure at point B;

[0020] Figure 6 This utility model proposes a gas preheating device for gas generator sets. Figure 3 Enlarged view of the structure at point C.

[0021] Legend:

[0022] 1. Inlet pipe; 2. Tank; 3. Connector; 4. Exhaust gas inlet; 5. Outer pipe; 6. Exhaust pipe; 7. Sealing plate; 8. Rotary block; 9. Plug; 10. Inner pipe; 11. Exhaust gas outlet; 12. Cavity; 13. Spiral fins; 14. Spiral heating wire; 15. Support rod; 16. Conical head; 17. U-shaped plate; 18. Filter plate; 19. Slot; 20. Slot; 21. Baffle plate; 22. Guide groove; 23. Spring; 24. Guide block; 25. Blind hole; 26. Guide rod; 27. Connecting rod; 28. Countersunk hole; 29. ​​Threaded groove; 30. Threaded block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1 to 6 This utility model provides a gas preheating device for a gas generator set: It includes an intake pipe 1, with a groove 2 fixedly connected to the end of the intake pipe 1. A U-shaped plate 17 is slidably connected inside the groove 2, and a filter plate 18 is slidably connected inside the U-shaped plate 17. A sealing plate 7 is fixedly connected to the outside of the U-shaped plate 17, and the sealing plate 7 is slidably connected to the outside of the groove 2. A countersunk hole 28 penetrates the inner side of the sealing plate 7, and a fixing member is rotatably fitted inside the countersunk hole 28. The fixing member is threadedly connected to the groove 2. A connector 3 is fixedly connected to the right side of the groove 2, and an outer pipe 5 is fixedly connected to the right side of the connector 3. An inner pipe 10 is fixedly connected to the inside of the outer pipe 5. The inner tube 10 is equipped with a heating element. The end of the outer tube 5 is fixedly connected to the air outlet pipe 6. The inner wall of the U-shaped plate 17 has slots 19 on both sides. The slots 19 are slidably connected to the slots 19. The slots 20 are fixedly connected to the filter plate 18. The outer corner of the groove 2 has blind holes 25. The blind holes 25 are slidably connected to the blind holes 25. The guide rods 26 are fixedly connected to the sealing plate 7. The inner wall of the blind holes 25 has two guide grooves 22 symmetrically opened. The guide blocks 24 are slidably connected to the guide grooves 22. The guide blocks 24 are fixedly connected to the guide rods 26. The inner wall of the guide grooves 22 and the guide blocks 24 are fixed together with a spring 23.

[0025] The fastener includes a connecting rod 27 passing through the countersunk hole 28. One end of the connecting rod 27 is fixedly connected to a screw block 8, and the other end is fixedly connected to a threaded block 30. A threaded groove 29 is opened on the outside of the groove body 2. The threaded block 30 is threadedly connected to the threaded groove 29. A rubber sheet is fixedly connected to the inner side of the sealing plate 7. The rubber sheet passes through the through hole and the through groove. The rubber sheet is fixedly sleeved on the outer edge of the U-shaped plate 17, the guide rod 26, and the connecting rod 27 through the through groove and the through hole.

[0026] By setting a detachable U-shaped filter plate 18 at the end of the intake pipe 1, impurities in the gas are effectively intercepted, preventing impurities from accumulating and affecting the heat conduction performance of the preheating pipe. The filter plate 18 is slidably installed through the slot 19 and the block 20. With the guide structure of the sealing plate 7, it can be quickly pulled out for cleaning or replacement without disassembling the pipe, making maintenance simple. The sealing plate 7 achieves dynamic compression sealing through the spring 23, guide rod 26 and rubber sheet to prevent gas leakage. The threaded connection of the fastener further strengthens the stability of the filter structure.

[0027] The heating element includes a spiral heating wire 14 disposed inside the inner tube 10. A conical head 16 and a plug 9 are threaded to both ends of the inner tube 10, respectively. The conical head 16 is located on one side of the air intake pipe 1. Two support rods 15 are symmetrically fixed to both ends of the inner tube 10. The support rods 15 are fixed to the inner wall of the outer tube 5. Spiral fins 13 are fixedly connected to the outside of the inner tube 10. A cavity 12 is provided inside the outer tube 5. Multiple vertically symmetrical baffles 21 are fixedly connected inside the cavity 12. The baffles 21 are obliquely distributed inside the cavity 12. An exhaust gas inlet 4 and an exhaust gas outlet 11 are fixedly connected to the outside of the outer tube 5, and both the exhaust gas inlet 4 and the exhaust gas outlet 11 are connected to the cavity 12. The spiral heating wire 14 is coated with an insulating ceramic coating. The outer tube 5 and the inner tube 10 are made of ceramic fiber composite material and copper-aluminum alloy, respectively.

[0028] The gas passes through the spiral fins 13 channel between the outer tube 5 and the inner tube 10, fully absorbing the direct heat from the electric heating wire in the inner tube 10. At the same time, the exhaust heat from the engine introduced by the exhaust gas inlet 4 is used to preheat the gas in the cavity 12, improving thermal efficiency. The obliquely symmetrically distributed baffles 21 extend the gas flow path, enhance the heat exchange effect, and ensure that the gas temperature rises uniformly. The spiral heating wire 14 is built into the inner tube 10, and both ends are sealed by the conical head 16 and the plug 9 to avoid direct contact with the gas.

[0029] Working principle: The gas enters the tank 2 from the intake pipe 1. After the U-shaped filter plate 18 intercepts impurities, it flows into the spiral fin 13 channel between the outer pipe 5 and the inner pipe 10 through the connector 3. After the spiral heating wire 14 is energized, it directly heats the wall of the inner pipe 10. The heat is conducted to the gas through the surface of the inner pipe 10 and the spiral fin 13. The engine exhaust gas is injected into the cavity 12 from the exhaust gas inlet 4. After indirect heat exchange with the gas, it is discharged from the exhaust gas outlet 11 to realize the utilization of waste heat. When the gas flows along the cavity 12, it is guided by the baffle 21 to form turbulence, which fully absorbs the heat of the electric heating wire in the inner pipe 10 and the waste heat of the exhaust gas. Finally, it is output to the generator set from the exhaust pipe 6.

[0030] When the filter plate 18 needs cleaning, the rotating block 8 is rotated. The rotating block 8 drives the threaded block 30 to rotate via the connecting rod 27, causing the threaded block 30 to unscrew from the threaded groove 29 and retract into the countersunk hole 28. Then, the rotating block 8 pulls the sealing plate 7 outward, separating the sealing plate 7 from the inlet end of the tank 2. At the same time, the guide rod 26 is pulled out from the blind hole 25, and the guide block 24 moves within the guide groove 22, simultaneously compressing the spring 23. This causes the spring 23 to compress, thereby causing the U-shaped plate 17, along with the filter plate 18, to exit the tank. Pull out 2, then remove the filter plate 18 upward from the U-shaped plate 17 for cleaning. After cleaning, connect the filter plate 18 to the U-shaped plate 17 through the slot 19 and the block 20. Then release the screw block 8, and the spring 23 will return to the original position, allowing the U-shaped plate 17 and the filter plate 18 to return to the tank 2. The sealing plate 7 will fit tightly against the inlet end of the tank 2 to seal the tank 2. Then rotate the screw block 8, which will drive the threaded block 30 to rotate through the connecting rod 27, so that the threaded block 30 is screwed into the threaded groove 29.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas preheating device for a gas generator set, comprising an inlet pipe (1), characterized in that: The end of the air inlet pipe (1) is fixedly connected to the groove (2), and a U-shaped plate (17) is slidably connected inside the groove (2). A filter plate (18) is slidably connected inside the U-shaped plate (17). A sealing plate (7) is fixedly connected to the outside of the U-shaped plate (17). The sealing plate (7) is slidably connected to the outside of the groove (2). A countersunk hole (28) is passed through the inside of the sealing plate (7). A fixing member is rotatably sleeved inside the countersunk hole (28). The fixing member is threadedly connected to the groove (2). A joint (3) is fixedly connected to the right side of the groove (2). An outer tube (5) is fixedly connected to the right side of the joint (3). An inner tube (10) is fixedly connected inside the outer tube (5). A heating element is provided in the inner tube (10). An air outlet pipe (6) is fixedly connected to the end of the outer tube (5).

2. The gas preheating device for a gas generator set according to claim 1, characterized in that: The heating element includes a spiral heating wire (14) disposed inside the inner tube (10). The two ends of the inner tube (10) are respectively threaded to a conical head (16) and a plug (9). The conical head (16) is located on one side of the air inlet pipe (1). Two support rods (15) are symmetrically fixed at the two ends of the inner tube (10). The support rods (15) are fixed to the inner wall of the outer tube (5).

3. A gas preheating device for a gas generator set according to claim 2, characterized in that: The inner tube (10) is fixedly connected to the outside of a spiral fin (13). The outer tube (5) is provided with a cavity (12). Multiple vertically symmetrical baffles (21) are fixedly connected inside the cavity (12). The baffles (21) are obliquely distributed inside the cavity (12). The outer tube (5) is fixedly connected to an exhaust gas inlet (4) and an exhaust gas outlet (11), respectively. Both the exhaust gas inlet (4) and the exhaust gas outlet (11) are connected to the cavity (12).

4. A gas preheating device for a gas generator set according to claim 1, characterized in that: The inner wall of the U-shaped plate (17) has slots (19) on both sides, and a card block (20) is slidably connected in the slot (19). The card block (20) is fixedly connected to the filter plate (18).

5. A gas preheating device for a gas generator set according to claim 1, characterized in that: A blind hole (25) is opened at the outer corner of the groove (2), and a guide rod (26) is slidably connected in the blind hole (25). The guide rod (26) is fixedly connected to the sealing plate (7).

6. A gas preheating device for a gas generator set according to claim 5, characterized in that: Two guide grooves (22) are symmetrically opened on the inner wall of the blind hole (25). A guide block (24) is slidably connected in the guide groove (22). The guide block (24) is fixedly connected to the guide rod (26). A spring (23) is fixed between the inner wall of the guide groove (22) and the guide block (24).

7. A gas preheating device for a gas generator set according to claim 5, characterized in that: The fastener includes a connecting rod (27) passing through the countersunk hole (28). One end of the connecting rod (27) is fixedly connected to a screw block (8), and the other end is fixedly connected to a threaded block (30). A threaded groove (29) is opened on the outside of the groove (2). The threaded block (30) is threadedly connected to the threaded groove (29). A rubber sheet is fixedly connected to the inner side of the sealing plate (7). The rubber sheet passes through the through hole and the through groove respectively. The rubber sheet is fixedly sleeved on the outer edge of the U-shaped plate (17), the guide rod (26), and the connecting rod (27) through the through groove and the through hole.

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