A ship pulsating heat pipe exhaust gas waste heat utilization device

Abstract

The utility model discloses a kind of exhaust gas waste heat utilization devices of ship pulsating heat pipe, it is related to waste heat utilization technical field, including heat absorption tank and the waste heat recovery device installed to its outside, heat absorption tank is provided with hot water pipe, still including docking mechanism, the docking mechanism is set to the outside of hot water pipe, docking pipe is installed on the docking mechanism;Wherein, the docking mechanism includes bellows expansion joint and two annular boxes, the end of hot water pipe and docking pipe is all through a group of bolts and bellows expansion joint docking, a group of abutting rods is arranged on the annular box.The utility model has beneficial effect for: the mode of multiple point abutting support collocation bellows expansion joint docking can be used, effectively resist ship vibration environment and the thermal stress influence of junction, reduce bolt loosening and separation phenomenon, and if bolt loosening phenomenon occurs, loosening condition can be known in time and early warning, it is convenient to maintain in time, reduce major accident.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization technology, and in particular to a waste heat utilization device for exhaust gas from a ship's pulsating heat pipe. Background Technology

[0002] Heat pipe waste heat recovery units are mainly used for flue gas waste heat recovery. They can convert waste heat into preheated air, hot water or steam, and are widely used in many fields such as metallurgy, chemical industry, oil refining and boiler systems.

[0003] A search revealed the Chinese patent "A Waste Heat Utilization Device for Ship Pulsating Heat Pipes" (CN219956238U), which includes a heat-absorbing tank and a connecting pipe. The bottom of the heat-absorbing tank is equipped with a waste heat recovery device. One end of the heat-absorbing tank is connected to a cold water pipe, and the end of the heat-absorbing tank furthest from it is connected to a hot water pipe. A drain pipe is installed at the end of the heat-absorbing tank closest to the hot water pipe. The waste heat recovery device has an inlet pipe and an outlet pipe at its two ends, respectively. The arc surface of the hot water pipe is equipped with an adjustment device. This invention solves the problem that when recovering waste heat from ship pulsating heat pipes, the hot water pipe on the heat-absorbing tank needs to circulate the water within the tank. This requires the hot water pipe to be connected to a pipeline, and after prolonged use, the bolts and nuts on the hot water pipe are susceptible to thermal expansion and contraction, which can easily lead to pipe breakage. However, this method has the following drawbacks in actual use: due to the vibration environment of the ship and the thermal stress at the connection, the bolts are prone to loosening and detachment, and when loosening occurs, there is no timely warning, which leads to failure to maintain in time and is prone to causing major accidents. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A waste heat recovery device for a ship's pulsating heat pipe includes a heat absorption tank and a waste heat recovery unit installed on its outer side. The heat absorption tank is provided with a hot water pipe and also includes a docking mechanism located on the outer side of the hot water pipe. A connecting pipe is installed on the docking mechanism. The docking mechanism includes a corrugated expansion joint and two annular boxes. The ends of the hot water pipe and the connecting pipe are connected to the corrugated expansion joint by a set of bolts. A set of abutment rods is provided on the annular boxes, and the ends of the two sets of abutment rods respectively contact the flanges on the outer side of the hot water pipe and the connecting pipe.

[0006] As a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, a set of supports is provided on the outer side of the annular box, and a folding rod is hinged inside the supports, with the bolt passing through and rotatably connected to the inside of the folding rod.

[0007] In a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, one end of the contact rod is inserted into the interior of the annular box and fixedly connected to a piston ring, and the piston ring is slidably connected to the interior of the annular box.

[0008] As a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, the annular box is equipped with a conduit communicating with it, and a solenoid valve is installed on the outside of the conduit.

[0009] As a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, the annular box is equipped with an intelligent digital display pressure gauge.

[0010] As a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, wherein: the outer side of the contact rod is coated with a scale value, and a group of the contact rods are distributed in a ring along the axis of the annular box.

[0011] In a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, the bent portion of the folding rod is located on the horizontal movement path of the bellows expansion joint flange.

[0012] As a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, the two annular boxes are respectively slidably sleeved on the outside of the hot water pipe and the connecting pipe, and the annular boxes and the corrugated pipe expansion joint are coaxially arranged.

[0013] As a preferred embodiment of the waste heat recovery device for the ship's pulsating heat pipe described in this utility model, the waste heat recovery unit is located below the heat absorption tank, and an inlet pipe and an outlet pipe are respectively provided on both sides of the waste heat recovery unit.

[0014] As a preferred embodiment of the waste heat utilization device for the ship's pulsating heat pipe described in this utility model, a cold water pipe and a drain pipe are respectively provided on the outside of the heat absorption tank.

[0015] The beneficial effects of this utility model are as follows: multi-point contact rods are used to apply pressure and limit the connection, reducing the phenomenon of bolt loosening; and corrugated expansion joints are used to resist deformation in response to thermal stress and vibration environment, further improving the stability of the connection and reducing the phenomenon of bolt loosening and detachment. If the bolts become loose unexpectedly, the intelligent digital pressure gauge will detect the abnormal pressure data and promptly notify the backend so that the user can be informed. The exposed scale on the contact rod will also change accordingly, allowing the user to visually identify any loosening during inspections, facilitating timely maintenance and reducing the occurrence of major accidents. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is an overall structural diagram of a waste heat recovery device for ship pulsed heat pipes.

[0017] Figure 2 for Figure 1 A magnified view of A in the middle.

[0018] Figure 3 This is a structural diagram of the annular box and the contact rod of the exhaust gas waste heat utilization device for a ship's pulsating heat pipe.

[0019] Figure 4 This is a cross-sectional view of the annular box of the waste heat recovery device for the exhaust gas of a ship's pulsating heat pipe.

[0020] The following numbers are labeled in the diagram: 100, heat absorption tank; 200, waste heat recovery unit; 210, flue gas inlet pipe; 220, flue gas outlet pipe; 300, hot water pipe; 400, docking mechanism; 410, corrugated expansion joint; 420, annular box; 421, contact rod; 422, piston ring; 423, conduit; 424, intelligent digital pressure gauge; 425, bracket; 426, folding rod; 500, connecting pipe. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example 1: Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a waste heat utilization device for exhaust gas of a ship's pulsating heat pipe, including a heat absorption tank 100 and a waste heat recovery device 200 installed on its outside. A hot water pipe 300 is provided on the heat absorption tank 100.

[0025] The waste heat recovery device 200 is used to conduct and utilize the heat energy in the exhaust gas, and the heat absorption tank 100 absorbs the heat energy to heat the water source, and then discharges it along the hot water pipe 300.

[0026] It also includes a docking mechanism 400, which is located on the outside of the hot water pipe 300, and a connecting pipe 500 is installed on the docking mechanism 400. The docking mechanism 400 includes a corrugated expansion joint 410 and two annular boxes 420. The ends of the hot water pipe 300 and the connecting pipe 500 are connected to the corrugated expansion joint 410 by a set of bolts. A set of abutment rods 421 are provided on the annular box 420. The ends of the two sets of abutment rods 421 contact the flanges on the outside of the hot water pipe 300 and the connecting pipe 500, respectively.

[0027] Before operation, the connecting pipe 500 needs to be connected to the hot water pipe 300. Align the end of the corrugated expansion joint 410 with the flanges on the ends of the hot water pipe 300 and the connecting pipe 500 respectively, and complete the bolt connection in sequence. Then, use the contact rod 421 and the corresponding flange to apply pressure and limit the connection to ensure the stability of the connection. It should be noted that during the bolt connection process, corresponding nuts and metal washers are used in combination to improve the stability of the connection.

[0028] Example 2: Reference Figures 1-4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0029] Specifically, a set of brackets 425 is provided on the outside of the annular box 420, and a hinged lever 426 is hinged inside the brackets 425. Bolts pass through and rotate to connect to the inside of the hinge lever 426.

[0030] The bracket 425 is used to support the folding rod 426. After aligning the corresponding flanges, the user rotates the folding rod 426 into place and then ensures that the bolts are aligned with the mating holes on the flange, thereby improving the docking efficiency.

[0031] Specifically, one end of the abutment rod 421 is inserted into the interior of the annular box 420 and is fixedly connected to a piston ring 422, which is slidably connected to the interior of the annular box 420.

[0032] After the contact rod 421 contacts the corresponding flange, the gas inside the annular box 420 is sealed, thereby ensuring the stability of the piston ring 422 and the contact rod 421 and ensuring the pressure limiting effect.

[0033] Specifically, the annular box 420 is equipped with a conduit 423 that communicates with it, and a solenoid valve is installed on the outside of the conduit 423; the annular box 420 is equipped with an intelligent digital display pressure gauge 424.

[0034] After docking, the solenoid valve on the conduit 423 is in the closed state. When the bolts become loose, the bending rod 426 will offset the traction bracket 425 and the annular box 420 to a corresponding degree, so that the piston ring 422 at the end of the contact rod 421 will slide inside the annular box 420, causing the gas inside the annular box 420 to be discharged outward along the conduit 423, resulting in an increase in air pressure. At this time, the intelligent digital display pressure gauge 424 will detect the pressure value. When the pressure value exceeds the preset value, it will control the solenoid valve to open, reducing the occurrence of excessive damage to the equipment.

[0035] It should be noted that the intelligent digital pressure gauge 424 can interface with an external PLC controller. The preset values ​​for the opening and closing control of the solenoid valve and the monitoring pressure of the intelligent digital pressure gauge 424 can be pre-programmed through the PLC controller. This type of technology is a mature existing technology and will not be elaborated here.

[0036] Specifically, the outer side of the contact rod 421 is coated with scale values, and a group of contact rods 421 are distributed in a ring along the axis of the annular box 420.

[0037] After the bolts become loose, the exposed area of ​​the contact rod 421 will change, resulting in a change in the exposed scale value. This allows users to visually determine whether loosening has occurred and the extent of bolt loosening during routine inspections.

[0038] Specifically, the bent part of the folding rod 426 is located on the horizontal movement path of the bellows expansion joint 410 flange.

[0039] This allows the flange 426 to rotate into place, directly placing the bolts in the mating area. Only the rotation angle of the flange needs to be aligned before subsequent mating and installation can proceed, improving work efficiency.

[0040] Example 3: Reference Figures 1-4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0041] Specifically, the two annular boxes 420 are slidably fitted onto the outside of the hot water pipe 300 and the connecting pipe 500, respectively, and the annular box 420 and the corrugated pipe expansion joint 410 are coaxially arranged.

[0042] By using a sliding sleeve method, the annular box 420 can move after the bolt is accidentally loosened, while the piston ring 422 remains stationary, thereby changing the internal air pressure of the annular box 420 and the exposed length of the contact rod 421.

[0043] Specifically, the waste heat recovery unit 200 is located below the heat absorption tank 100, and the waste heat recovery unit 200 is provided with an inlet pipe 210 and an outlet pipe 220 on both sides respectively.

[0044] The exhaust gas is provided with a flow space by the inlet pipe 210 and the outlet pipe 220, and waste heat is utilized in this flow space.

[0045] Specifically, a cold water pipe and a drain pipe are respectively installed on the outside of the heat absorption tank 100.

[0046] The installation of cold water pipes and sewage pipes facilitates the periodic discharge of cold water and sewage from the heat absorption tank 100.

[0047] When in use, align the flange on the bellows expansion joint 410 with the flange on the hot water pipe 300, then rotate the corresponding bending rod 426, and then tighten the bolts in sequence to complete the connection. At this time, the contact rod 421 abuts against the outside of the flange on the hot water pipe 300. Then, in the same way, complete the connection between the bellows expansion joint 410 and the connecting pipe 500. If the bolts become loose during subsequent use, the intelligent digital display pressure gauge 424 will detect the abnormal pressure in the annular box 420 and then issue a warning to the downstream user. The exposed length of the contact rod 421 will also change accordingly after the bolts become loose, which can be intuitively observed during the user's daily inspection. The user can then perform timely maintenance of the connection area, check for loose bolts, and repair the equipment. It should be noted that if the contact effect between the abutment rod 421 and the corresponding flange is not good during the initial installation stage, the user can manually pull the abutment rod 421 to fit the corresponding flange to ensure the contact effect between the abutment rod 421 and the corresponding flange.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A waste heat recovery device for a ship's pulsed heat pipe exhaust gas, comprising a heat absorption tank (100) and a waste heat recovery unit (200) installed on its outer side, wherein a hot water pipe (300) is provided on the heat absorption tank (100), characterized in that: It also includes a docking mechanism (400), which is located on the outside of the hot water pipe (300), and a connecting pipe (500) is installed on the docking mechanism (400). The docking mechanism (400) includes a corrugated expansion joint (410) and two annular boxes (420). The ends of the hot water pipe (300) and the connecting pipe (500) are connected to the corrugated expansion joint (410) by a set of bolts. A set of abutment rods (421) is provided on the annular box (420). The ends of the two sets of abutment rods (421) are in contact with the flanges on the outside of the hot water pipe (300) and the connecting pipe (500), respectively.

2. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: A set of brackets (425) is provided on the outside of the annular box (420), and a folding rod (426) is hinged inside the brackets (425). The bolt passes through and is rotatably connected to the inside of the folding rod (426).

3. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: One end of the abutment rod (421) is inserted into the interior of the annular box (420) and fixedly connected to a piston ring (422), which is slidably connected to the interior of the annular box (420).

4. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: The annular box (420) is equipped with a conduit (423) communicating with it, and a solenoid valve is installed on the outside of the conduit (423).

5. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: The annular box (420) is equipped with an intelligent digital display pressure gauge (424).

6. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: The outer side of the abutment rod (421) is coated with scale values, and a group of the abutment rods (421) are distributed in a ring along the axis of the annular box (420).

7. The waste heat recovery device for ship pulsed heat pipes as described in claim 2, characterized in that: The bent portion of the folding rod (426) is located on the horizontal movement path of the bellows expansion joint (410) flange.

8. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: The two annular boxes (420) are respectively slidably sleeved on the outside of the hot water pipe (300) and the connecting pipe (500), and the annular box (420) and the corrugated pipe expansion joint (410) are coaxially arranged.

9. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: The waste heat recovery unit (200) is located below the heat absorption tank (100), and the waste heat recovery unit (200) is provided with a flue gas inlet pipe (210) and a flue gas outlet pipe (220) on both sides respectively.

10. The waste heat recovery device for ship pulsed heat pipes as described in claim 1, characterized in that: The heat absorption tank (100) is equipped with a cold water pipe and a drain pipe on its outer side.

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