A turbojet engine waste heat recovery duct

Abstract

The utility model relates to waste heat recovery field especially, and more particularly to a kind of waste heat recovery guide pipe of turbojet engine. Including guide pipe body and tail nozzle, the arc surface of guide pipe body is equipped with locking device, the locking device includes mounting ring, the mounting ring is fixedly connected with guide pipe body, the position of mounting ring is fixedly connected with sealing ring in guide pipe body inner wall, the upper and lower ends of mounting ring are all set up with sliding hole, the inner wall of sliding hole is slidably connected with slide bar, one end of slide bar is fixedly connected with round knob, the end of slide bar away from round knob is fixedly connected with limit block. The utility model provides a kind of waste heat recovery guide pipe of turbojet engine, solves the prior art, and the tail nozzle of guide pipe and engine need to be docked, and the traditional bolt docking is too complex to operate when installing or disassembling, thereby waste more time, reduce work efficiency, while also reduce the efficiency of the problem of guide pipe maintenance.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery, and in particular to a waste heat recovery duct for turbojet engines. Background Technology

[0002] Waste heat recovery technology involves capturing waste heat from industrial production or other processes and converting it into usable energy to improve energy efficiency. It is primarily used to reduce energy consumption, decrease greenhouse gas emissions, and lower production costs.

[0003] Existing technologies, such as the utility model patent with publication number CN213273869U, disclose a heat energy recovery device for industrial waste gas. This device includes a recovery cylinder, two outer shells, and a heat energy recovery mechanism. A threaded cylinder is connected to one side of the recovery cylinder. The heat energy recovery mechanism is located inside the recovery cylinder and includes a circular ring, a water pump, a connecting pipe, and several conduits. This industrial waste gas heat energy recovery device, by setting a heat energy recovery mechanism on the recovery cylinder, which includes several conduits, several sleeves, several heat-absorbing rods, a water pump, and a connecting pipe, allows room-temperature water to be transported to the sleeves via the connecting pipe and conduits when the water pump is operating. Simultaneously, the heat-absorbing rods transfer heat from the inner wall of the recovery cylinder to the sleeves, heating the water inside. The water is then discharged from the sleeves for reuse. This allows for the recovery of heat energy from high-temperature waste gas, improving the utilization rate of the waste gas.

[0004] The inventors discovered the following defects in the above content: In the field of waste heat recovery, especially when recovering waste heat from turbojet engines, it is usually necessary to use ducts to recover and dredge the generated exhaust gas. However, in the prior art, the duct needs to be connected to the engine's tail nozzle. The traditional bolt connection is too complicated to operate during installation or disassembly, thus wasting a lot of time, reducing work efficiency, and also reducing the efficiency of duct maintenance. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology that requires the connection of the duct to the engine's tailpipe. The traditional bolt connection is too complicated to operate during installation or disassembly, which wastes a lot of time, reduces work efficiency, and also reduces the efficiency of duct maintenance.

[0006] To solve the above-mentioned technical problems, this utility model provides a waste heat recovery duct for a turbojet engine, comprising: a duct body and a tail nozzle. The arc surface of the duct body is provided with a locking device, the locking device including a mounting ring, which is fixedly connected to the duct body. A sealing ring is fixedly connected to the inner wall of the duct body at the position corresponding to the mounting ring. Sliding holes are provided at both the upper and lower ends of the mounting ring. A sliding rod is slidably connected to the inner wall of the sliding hole. A round button is fixedly connected to one end of the sliding rod. A limiting block is fixedly connected to the end of the sliding rod away from the round button. The cross-section of the limiting block is triangular. A connecting ring is fixedly connected to the end of the tail nozzle near the duct body. The arc surface of the connecting ring is set with an inclined surface. A baffle is fixedly connected to the arc surface of the tail nozzle.

[0007] The aforementioned components achieve the following effects: before recovering waste heat from the turbojet engine, when it is necessary to connect the duct to the engine's exhaust nozzle, the two can be quickly connected and installed. When disassembly is required, simply pull the sliding rods at both ends to separate the duct from the exhaust nozzle, which greatly saves operation time and improves work efficiency.

[0008] Preferably, a plurality of anti-slip sleeves are fixedly connected to the arc surface of the button, and the plurality of anti-slip sleeves are evenly distributed on the arc surface of the button.

[0009] The effect achieved by the above components is that when the slider needs to be pulled by the round button, the anti-slip sleeve can increase the friction of the round button's arc surface, making it less likely to slip when pulled.

[0010] Preferably, a plurality of rubber strips are fixedly connected to the side of each of the two limiting blocks that are close to each other, and the plurality of rubber strips are evenly distributed on the limiting blocks.

[0011] The effect achieved by the above components is that when the limiting block contacts the arc surface of the tail nozzle, the rubber strip can increase the friction between the limiting block and the tail nozzle, making it less likely for the two to slip when locked.

[0012] Preferably, a spring is fitted onto the arc surface of the slide rod, and the two ends of the spring are fixedly connected to the mounting ring and the limiting block, respectively.

[0013] The effect achieved by the above components is that when the duct body is docked with the tail nozzle, the limiting block will compress the spring due to the squeezing of the connecting ring. When the connecting ring passes the position of the limiting block, the limiting block will automatically reset due to the elastic force of the spring to limit the connecting ring.

[0014] Preferably, the arc surface of the duct body is provided with an auxiliary device, the auxiliary device including a fixing ring, the fixing ring being fixedly connected to the duct body, the arc surface of the fixing ring being fixedly connected to two fixing plates, the two fixing plates being fixedly connected to two side plates on the side away from each other, the two side plates being rotatably connected to the same rotating rod on the side close to each other, the two ends of the rotating rod being fixedly connected to rod heads, the arc surface of the rotating rod being fixedly connected to an L-shaped plate, and the arc surface of the tail nozzle being fixedly connected to a limit ring.

[0015] The effect achieved by the above-mentioned components is that after the tail nozzle and the duct body are connected, the two can be further reinforced to prevent the engine from vibrating violently during operation and causing them to separate.

[0016] Preferably, a connecting rod is fixedly connected to the side of the L-shaped plate away from the conduit body, and a pull plate is fixedly connected to the end of the connecting rod away from the L-shaped plate.

[0017] The effect achieved by the above components is that when it is necessary to pull the L-shaped plate, it can be pulled with the help of the pull plate, making the operation simpler and less strenuous.

[0018] Preferably, both ends of the rotating rod are fitted with coil springs, and the two ends of the coil springs are fixedly connected to the side plate and the rod head, respectively.

[0019] The effect achieved by the above components is that when the L-shaped plate is rotated around the rotating rod, the coil spring will be twisted to generate elastic force, and when the L-shaped plate is released, the L-shaped plate will automatically return to its original position due to the elastic force of the coil spring.

[0020] Compared with related technologies, the waste heat recovery duct for turbojet engines provided by this utility model has the following beneficial effects:

[0021] By operating the adjustment device, the traditional cumbersome method of docking and fixing the duct body and the tail nozzle can be eliminated, allowing for rapid docking and separation, which greatly saves time and improves work efficiency.

[0022] By operating the auxiliary device, after the duct body and the tail nozzle are connected, the L-shaped plate can be used to limit and fix them, further reinforcing the two and preventing them from separating when the engine vibrates violently during operation. Attached Figure Description

[0023] Figure 1 A three-dimensional structural schematic diagram of a waste heat recovery duct for a turbojet engine provided by this utility model;

[0024] Figure 2 for Figure 1The diagram shows a three-dimensional structure of the locking device.

[0025] Figure 3 for Figure 1 The enlarged view at point A is shown below;

[0026] Figure 4 for Figure 1 A three-dimensional structural diagram of the auxiliary device shown.

[0027] The following are the labeling elements in the diagram: 1. Conduit body; 2. Tail nozzle; 3. Locking device; 301. Mounting ring; 302. Round button; 303. Anti-slip sleeve; 304. Sliding rod; 305. Sealing ring; 306. Sliding hole; 307. Spring; 308. Limiting block; 309. Rubber strip; 310. Connecting ring; 311. Baffle; 4. Auxiliary device; 401. Fixing ring; 402. Fixing plate; 403. Side plate; 404. Rotating rod; 405. Rod head; 406. Coil spring; 407. L-shaped plate; 408. Connecting rod; 409. Pull plate; 410. Limiting ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 4 The present invention provides a waste heat recovery duct for a turbojet engine, comprising: a duct body 1 and a tail nozzle 2, wherein a locking device 3 is provided on the arc surface of the duct body 1, and an auxiliary device 4 is provided on the arc surface of the duct body 1.

[0031] In the embodiments of this utility model, please refer to Figures 1 to 3The locking device 3 includes a mounting ring 301, which is fixedly connected to the guide tube body 1. A sealing ring 305 is fixedly connected to the inner wall of the guide tube body 1 at the position corresponding to the mounting ring 301. Sliding holes 306 are provided at both the upper and lower ends of the mounting ring 301. A sliding rod 304 is slidably connected to the inner wall of the sliding hole 306. A round button 302 is fixedly connected to one end of the sliding rod 304. A limiting block 308 is fixedly connected to the end of the sliding rod 304 away from the round button 302. The cross-section of the limiting block 308 is triangular. A connecting ring 310 is fixedly connected to the end of the tail nozzle 2 near the guide tube body 1. The arc surface of the connecting ring 310 is set as an inclined surface. A baffle 311 is fixedly connected to the arc surface of the tail nozzle 2. Before recovering waste heat from the turbojet engine, when the duct needs to be connected to the engine's exhaust nozzle 2, the two can be quickly connected and installed. When disassembly is required, simply pull the sliding rods 304 at both ends to separate the duct from the exhaust nozzle 2, significantly saving operation time and improving work efficiency. Several anti-slip sleeves 303 are fixedly connected to the arc surface of the round button 302, and these anti-slip sleeves 303 are evenly distributed on the arc surface of the round button 302. When the round button 302 is used to pull the sliding rod 304, the anti-slip sleeves 303 increase the friction of the arc surface of the round button 302, making it less likely to slip during pulling. Several rubber strips 309 are fixedly connected to the side of each of the two limiting blocks 308 that are close to each other, and these rubber strips 309 are evenly distributed on the limiting blocks 308. When the limiting block 308 contacts the arc surface of the nozzle 2, the rubber strip 309 increases the friction between the limiting block 308 and the nozzle 2, making it less likely for them to slip during locking. A spring 307 is fitted onto the arc surface of the slide rod 304, with both ends of the spring 307 fixedly connected to the mounting ring 301 and the limiting block 308, respectively. This ensures that when the duct body 1 is connected to the nozzle 2, the limiting block 308 compresses the spring 307 due to the pressure of the connecting ring 310. When the connecting ring 310 passes the position of the limiting block 308, the limiting block 308 automatically resets due to the elastic force of the spring 307, limiting the connection ring 310.

[0032] In the embodiments of this utility model, please refer to Figure 1 and Figure 4The auxiliary device 4 includes a fixing ring 401, which is fixedly connected to the duct body 1. Two fixing plates 402 are fixedly connected to the arc surface of the fixing ring 401. Two side plates 403 are fixedly connected to the sides of the two fixing plates 402 that are far apart from each other. A common rotating rod 404 is rotatably connected to the sides of the two side plates 403 that are close to each other. Rod heads 405 are fixedly connected to both ends of the rotating rod 404. An L-shaped plate 407 is fixedly connected to the arc surface of the rotating rod 404. A limit ring 410 is fixedly connected to the arc surface of the tail nozzle 2. This achieves the effect of further reinforcing the tail nozzle 2 and the duct body 1 after docking, preventing them from separating due to severe vibration of the engine during operation. A connecting rod 408 is fixedly connected to the side of the L-shaped plate 407 away from the duct body 1, and a pull plate 409 is fixedly connected to the end of the connecting rod 408 away from the L-shaped plate 407. When the L-shaped plate 407 needs to be pulled, it can be pulled using the pull plate 409, making the operation simpler and less strenuous. Both ends of the rotating rod 404 are fitted with coil springs 406, with the ends of the coil springs 406 fixedly connected to the side plate 403 and the rod head 405, respectively. This achieves the effect that when the L-shaped plate 407 is rotated around the rotating rod 404, the coil springs 406 are twisted, generating elastic force. When the L-shaped plate 407 is released, it automatically returns to its original position due to the elastic force of the coil springs 406.

[0033] The working principle of the waste heat recovery duct for a turbojet engine provided by this utility model is as follows: When it is necessary to connect the duct body 1 to the tail nozzle 2, the operator pushes the two limiting blocks 308 inside the duct towards the connecting ring 310 on the tail nozzle 2. The inclined surface of the connecting ring 310 contacts the triangular cross-section of the two limiting blocks 308 and squeezes the two limiting blocks 308, pushing the two limiting blocks 308 to move upward and downward respectively. The limiting blocks 308 drive the sliding rod 304 to slide smoothly along the inner wall of the sliding hole 306. The spring 307 on the arc surface of the sliding rod 304 compresses and generates an elastic force opposite to the direction of movement of the limiting blocks 308. When the limiting block 308 completely passes the position of the connecting ring 310, the spring 307 immediately pushes the two limiting blocks 308 to quickly reset. The rubber strip 309 on the surface of the limiting block 308 undergoes elastic deformation under the pressure of the spring 307, tightly pressing against the arc surface of the connecting ring 310. The connecting ring 310 then restricts the movement of the duct body 1 away from the tail nozzle 2, thus achieving a locked state. At this time, the sealing ring 305 on the inner wall of the duct body 1 and the end face of the tail nozzle 2 are tightly fitted to ensure sealing performance. When disassembly is required, the operator holds the anti-slip sleeves 303 at the two rod heads 405 with both hands and pulls them outward. The textured structure on the surface of the anti-slip sleeves 303 increases the friction of the hand and prevents slippage. The rod head 405 pulls the slide bar 304 along the sliding hole 306. The slide bar 304 drives the two limit blocks 308 to move upward and downward respectively. When the distance between the two limit blocks 308 is greater than the diameter of the connecting ring 310, the guide tube body 1 can be moved away from the tail nozzle 2, thereby releasing the locked state. The spring 307 is compressed again during the pulling of the round button 302 to generate elastic force. After the rod head 405 is released, the spring 307 automatically pushes the limit block 308 back to the standby position. The entire locking process achieves automatic compression of the spring 307 through the inclined surface of the connecting ring 310 and the limit block 308, achieves automatic reset locking through the elastic force of the spring 307, increases the locking friction through the elastic deformation of the rubber strip 309, and ensures operational reliability through the anti-slip sleeve 303. The sealing ring 305 provides secondary sealing protection after connection to prevent high-temperature exhaust gas leakage.

[0034] When it is necessary to reinforce the connection between the duct body 1 and the nozzle 2, the operator holds the pull plate 409 and pulls it outward. The pull plate 409 pulls the L-shaped plate 407 around the axis of the rotating rod 404 via the connecting rod 408. The L-shaped plate 407 drives the rotating rod 404 to rotate between the two side plates 403. The rod heads 405 at both ends of the rotating rod 404 rotate accordingly and twist around the two coil springs 406 at both ends of the rotating rod 404, thereby generating a torsional force. Continue pulling the pull plate 409 to completely disengage the L-shaped plate 407 from the blocking range of the limiting ring 410. After the nozzle 2 is connected to the duct body 1, release the pull plate 409. The coil springs 406 release the torsional force and drive the rod head 405 to rotate in the opposite direction. The rod head 405 drives the L-shaped plate 407 to rotate and reset in the opposite direction via the rotating rod 404. The short arm end of the L-shaped plate 407 automatically engages with the inner side of the limiting ring 410 on the arc surface of the nozzle 2 to form a mechanical interlock. When the reinforcement needs to be released, pull the pull plate 409 again. The pull plate 409, through the connecting rod 408, drives the L-shaped plate 407 to rotate and disengage from the blocking range of the limiting ring 410. The coil spring 406 re-twists to generate torsional force. When the duct body 1 separates from the tail nozzle 2, release the pull plate 409, and the L-shaped plate 407 will automatically reset due to the torsional force of the coil spring 406. The entire reinforcement process is achieved by pulling the pull plate 409 to drive the L-shaped plate 407 to rotate to unlock, by the automatic reset of the coil spring 406 to lock, and by the interlocking of the L-shaped plate 407 and the limiting ring 410 to form a limiting and fixing structure. The pull plate 409 and the connecting rod 408 facilitate the operation of the L-shaped plate 407.

[0035] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A waste heat recovery duct for a turbojet engine, characterized in that, include: The conduit body (1) and the tail nozzle (2) are provided. The arc surface of the conduit body (1) is provided with a locking device (3). The locking device (3) includes a mounting ring (301). The mounting ring (301) is fixedly connected to the conduit body (1). A sealing ring (305) is fixedly connected to the inner wall of the conduit body (1) at the position corresponding to the mounting ring (301). Sliding holes (306) are provided at both the upper and lower ends of the mounting ring (301). The inner wall of the sliding hole (306) is slidably connected to a sliding ring. The rod (304) has a round button (302) fixedly connected to one end of the sliding rod (304), and a limit block (308) fixedly connected to the end of the sliding rod (304) away from the round button (302). The limit block (308) has a triangular cross-section. The tail nozzle (2) has a connecting ring (310) fixedly connected to the end of the pipe close to the guide body (1). The arc surface of the connecting ring (310) is set as an inclined surface. The arc surface of the tail nozzle (2) is fixedly connected to a baffle (311).

2. The waste heat recovery duct for a turbojet engine according to claim 1, characterized in that, The circular button (302) has a number of anti-slip sleeves (303) fixedly connected to its arc surface, and the number of anti-slip sleeves (303) are evenly distributed on the arc surface of the circular button (302).

3. The waste heat recovery duct for a turbojet engine according to claim 1, characterized in that, Several rubber strips (309) are fixedly connected to the side of the two limiting blocks (308) that are close to each other, and the several rubber strips (309) are evenly distributed on the limiting blocks (308).

4. The waste heat recovery duct for a turbojet engine according to claim 1, characterized in that, The arc surface of the slide rod (304) is fitted with a spring (307), and the two ends of the spring (307) are fixedly connected to the mounting ring (301) and the limiting block (308) respectively.

5. The waste heat recovery duct for a turbojet engine according to claim 1, characterized in that, The arc surface of the duct body (1) is provided with an auxiliary device (4). The auxiliary device (4) includes a fixing ring (401). The fixing ring (401) is fixedly connected to the duct body (1). The arc surface of the fixing ring (401) is fixedly connected to two fixing plates (402). The two fixing plates (402) are fixedly connected to two side plates (403) on the side away from each other. The two side plates (403) are rotatably connected to the same rotating rod (404) on the side close to each other. The two ends of the rotating rod (404) are fixedly connected to rod heads (405). The arc surface of the rotating rod (404) is fixedly connected to an L-shaped plate (407). The arc surface of the tail nozzle (2) is fixedly connected to a limit ring (410).

6. The waste heat recovery duct for a turbojet engine according to claim 5, characterized in that, A connecting rod (408) is fixedly connected to the side of the L-shaped plate (407) away from the conduit body (1), and a pull plate (409) is fixedly connected to the end of the connecting rod (408) away from the L-shaped plate (407).

7. A waste heat recovery duct for a turbojet engine according to claim 5, characterized in that, Both ends of the rotating rod (404) are fitted with coil springs (406), and the two ends of the coil springs (406) are fixedly connected to the side plate (403) and the rod head (405) respectively.

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