Connecting structure with protection function and LNG moving tank
By using a connection structure of fixed flange, connecting hose and detection mechanism between the LNG storage tank and the gasification mechanism, the problem of insufficient connection sealing in the LNG powered ship fuel supply system is solved, and safe and efficient LNG filling is achieved.
Patent Information
- Application Number
- CN202421866981.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-02
AI Technical Summary
When the existing LNG powered marine fuel supply system replaces the LNG storage tank, it is difficult to ensure the connection seal between the LNG storage tank and the gasification mechanism, resulting in low filling efficiency and safety hazards.
The connection structure of the fixed flange, connecting hose and detection mechanism is adopted. The distance between the fixed flange and the hose flange is measured through the detection mechanism to ensure the connection sealing, and the connection stability is strengthened through the fasteners and seals. The valve is controlled in combination with the controller to ensure safe filling.
It improves the safety and efficiency of LNG filling, ensures the connection seal between the LNG storage tank and the gasification mechanism, prevents leakage, and improves the reliability and safety of fuel filling.
Smart Images
Figure CN223153317U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of LNG mobile tanks, and particularly to a connection structure with a protection function and an LNG mobile tank. Background Art
[0002] The fuel supply system of an LNG-powered ship mainly consists of an LNG storage tank and a gasification mechanism. The conventional method is to connect the LNG storage tank and the gasification mechanism together as an integral unit. However, due to the relatively low LNG refueling efficiency of the ship, when refueling the ship with LNG, it will take too much refueling time, thereby increasing the refueling cost. Therefore, the fuel supply systems of existing LNG-powered ships mostly adopt a structure that can be arranged in a split manner to facilitate the refueling of LNG fuel. That is, the LNG storage tank and the gasification mechanism are separated, and the fuel is refueled by replacing the LNG storage tank.
[0003] However, since LNG is a flammable and explosive fuel, when replacing the LNG storage tank, it is necessary to ensure the tightness of the connecting pipeline between the LNG storage tank and the gasification mechanism, thereby ensuring the safe use of LNG. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a connection structure with a protection function, which can ensure the connection tightness of the LNG storage tank pipeline and improve the safety and refueling efficiency of LNG refueling.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A connection structure with a protection function is used to connect an LNG storage tank and a gasification mechanism. The connection structure includes: a fixed flange; fixed flanges are respectively installed on the LNG storage tank and the gasification mechanism; a connecting hose, and hose flanges are arranged at both ends of the connecting hose; the hose flange is detachably connected to the fixed flange, so that the connecting hose can communicate with the LNG storage tank and the gasification mechanism through the hose flange and the fixed flange; and a detection mechanism, which is installed on the fixed flange or the hose flange; the detection mechanism is used to measure the distance between the fixed flange and the hose flange.
[0007] In an embodiment of the present application, the detection mechanism is a distance sensor; the distance sensor is installed on the fixed flange, and the detection part of the distance sensor faces the end face of the corresponding hose flange at the connection; or the distance sensor is installed on the hose flange, and the detection part of the distance sensor faces the end face of the corresponding fixed flange at the connection.
[0008] In one embodiment of the present application, the distance sensor is a contact sensor; the contact sensor is mounted on the fixed flange or the hose flange through an adjusting nut so that the protruding amount of the detection part of the contact sensor can be adjusted through the adjusting nut.
[0009] In one embodiment of the present application, the connection structure further includes a seal; the seal is mounted between the hose flange and the fixed flange to seal the connection between the hose flange and the fixed flange.
[0010] In one embodiment of the present application, the connection structure further includes a fastener; the fastener is connected between the fixed flange and the hose flange to tightly connect the fixed flange and the hose flange.
[0011] In one embodiment of the present application, the fastener is a connecting bolt; bolt holes are formed in both the fixed flange and the hose flange; the connecting bolt is inserted into the bolt holes in the fixed flange and the hose flange.
[0012] The present application also provides an LNG mobile tank applicable to any of the connection structures with a protection function. The LNG mobile tank includes: an LNG storage tank for storing liquid LNG; a vaporization mechanism for vaporizing the liquid LNG; and a connection structure; wherein, the LNG storage tank communicates with the vaporization mechanism through the connection structure.
[0013] In one embodiment of the present application, the connection structure includes a gas-phase pipeline and a liquid-phase pipeline; the gas-phase pipeline is used for circulating gaseous natural gas; the liquid-phase pipeline is used for circulating liquid natural gas.
[0014] In one embodiment of the present application, the LNG mobile tank further includes a control valve; the control valve is arranged between the fixed flange and the LNG storage tank to selectively communicate the fixed flange and the LNG storage tank; the control valve is also arranged between the fixed flange and the vaporization mechanism to selectively communicate the fixed flange and the vaporization mechanism.
[0015] In one embodiment of the present application, the LNG mobile tank further includes a controller; the controller is electrically connected to the control valve and the detection mechanism so that the controller can control the on-off of the control valve through the detection signal fed back by the detection mechanism.
[0016] It can be seen from the above technical solutions that the present utility model has at least the following advantages and positive effects:
[0017] In the present utility model, the connection structure includes a fixed flange, a connection hose and a detection mechanism. Among them, fixed flanges are respectively installed on the LNG storage tank and the gasification mechanism. Hose flanges are respectively arranged at both ends of the connection hose, so that the connection hose can be respectively connected to the fixed flanges on the LNG storage tank and the gasification mechanism through the hose flanges. At the same time, the detection mechanism is installed on the fixed flange or the hose flange to measure the distance between the fixed flange and the hose flange and judge the connection tightness between the fixed flange and the hose flange, thereby ensuring the connection safety of the pipeline between the LNG storage tank and the gasification mechanism, facilitating the replacement of the LNG storage tank to complete the filling of LNG fuel. Brief Description of the Drawings
[0018] Figure 1 is a schematic diagram of the LNG mobile tank according to an embodiment of the present utility model.
[0019] Figure 2 is Figure 1 a schematic diagram of the connection structure of
[0020] The descriptions of the reference numerals are as follows:
[0021] 1 - LNG storage tank; 2 - gasification mechanism; 3 - gas phase pipeline; 4 - liquid phase pipeline; 11 - fixed flange; 21 - connection hose; 22 - hose flange; 30 - detection mechanism; 31 - detection part; 32 - adjusting nut; 40 - seal; 50 - fastener; 51 - bolt hole; 60 - control valve. Detailed Description of the Embodiment
[0022] Typical embodiments embodying the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various changes in different embodiments, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present utility model.
[0023] In the description of the present utility model, it should be understood that in the embodiments shown in the drawings, the indication of the direction or position relationship (such as up, down, left, right, front and back, etc.) is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.
[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.
[0025] For the existing fuel supply systems of LNG-powered ships, structures that can be arranged in a split manner are mostly adopted, that is, the LNG storage tank and the gasification mechanism are separately arranged, and are connected by a hose therebetween. After the LNG is consumed, the LNG storage tank is directly replaced to achieve the effect of rapid fuel replenishment, thus facilitating the filling of LNG fuel. However, since LNG is a flammable and explosive fuel, when replacing the LNG storage tank, it is necessary to ensure the tightness of the connecting pipeline between the LNG storage tank and the gasification mechanism, and thus ensure the safety of LNG use.
[0026] Therefore, an LNG mobile tank is proposed to solve the above problems.
[0027] Its solution is further illustrated by the following embodiments:
[0028] Please refer to Figure 1 and Figure 2 , the connection structure with a protection function in this embodiment is used to connect the LNG storage tank 1 and the gasification mechanism 2 to connect the LNG storage tank 1 and the gasification mechanism 2, so that LNG can be transferred from the LNG storage tank 1 to the gasification mechanism 2.
[0029] Specifically, the connection structure includes a fixed flange 11, a connection hose 21, and a detection mechanism 30. Among them, fixed flanges 11 are respectively installed on the LNG storage tank 1 and the gasification mechanism 2, hose flanges 22 are provided at both ends of the connection hose 21, and the hose flanges 22 are detachably connected to the fixed flanges 11, so that the connection hose 21 can connect the LNG storage tank 1 and the gasification mechanism 2 through the hose flanges 22 and the fixed flanges 11. At the same time, the detection mechanism 30 is installed on the fixed flange 11 or the hose flange 22 to measure the distance between the fixed flange 11 and the hose flange 22, and thus determine whether the connection tightness between the fixed flange 11 and the hose flange 22 meets the requirements by detecting the installation distance between the fixed flange 11 and the hose flange 22.
[0030] It should be noted that the connection hose 21 is a metal hose to ensure the connection safety between the LNG storage tank 1 and the gasification mechanism 2. Of course, in some other embodiments, the connection hose 21 can also be set as a plastic pipe, etc., to be able to connect the LNG storage tank 1 and the gasification mechanism 2 and ensure that LNG can be transferred through the connection hose 21.
[0031] Refer toFigure 2 , in this embodiment, the detection mechanism 30 is a distance sensor. The distance sensor is installed on the fixed flange 11, and the detection part 31 of the distance sensor faces the end face of the corresponding hose flange 22 at the connection. When the fixed flange 11 and the hose flange 22 are connected in cooperation, the detection part 31 of the detection mechanism 30 can abut against the end face of the hose flange 22, so as to detect the installation distance between the fixed flange 11 and the hose flange 22, and further, the connection tightness between the fixed flange 11 and the hose flange 22 can be detected through the installation distance.
[0032] Of course, in some cases, the distance sensor can also be installed on the hose flange 22, and the detection part 31 of the distance sensor faces the end face of the corresponding fixed flange 11 at the connection, so that the detection mechanism 30 can detect the installation distance between the fixed flange 11 and the hose flange 22, and further detect the connection tightness between the fixed flange 11 and the hose flange 22.
[0033] Specifically, in this embodiment, the distance sensor is a contact sensor, so that when the fixed flange 11 and the hose flange 22 are installed and connected, the distance sensor can abut between the fixed flange 11 and the hose flange 22 and detect the installation distance between the fixed flange 11 and the hose flange 22.
[0034] It should be noted that in some other embodiments, the distance sensor can also be set as an optoelectronic sensor to detect the installation distance between the fixed flange 11 and the hose flange 22.
[0035] Refer to Figure 2 , the contact sensor is installed on the fixed flange 11 or the hose flange 22 through an adjusting nut 32, so that the extension amount of the detection part 31 of the contact sensor can be adjusted through the adjusting nut 32. That is, the contact sensor adjusts the axial position of its detection part 31 through the adjusting nut 32, so that the detection part 31 is in the best measurement range, and further, the distance between the fixed flange 11 and the hose flange 22 can be detected.
[0036] Refer to Figure 2 , the connection structure further includes a seal 40. Among them, the seal 40 is installed between the hose flange 22 and the fixed flange 11 to seal the connection between the hose flange 22 and the fixed flange 11, so as to further ensure the sealed connection between the fixed flange 11 and the hose flange 22. In this embodiment, the seal 40 can be set as a sealing rubber ring.
[0037] Refer to Figure 2, the connection structure further includes a fastener 50. The fastener 50 is connected between the fixed flange 11 and the hose flange 22 to tightly connect the fixed flange 11 and the hose flange 22. Specifically, the fastener 50 is a connecting bolt, and bolt holes 51 are provided on both the fixed flange 11 and the hose flange 22. The connecting bolt passes through the bolt holes 51 on the fixed flange 11 and the hose flange 22 to tightly connect the fixed flange 11 and the hose flange 22 together.
[0038] It should be noted that multiple fasteners 50 are provided so that the multiple fasteners 50 can stably connect the fixed flange 11 and the hose flange 22.
[0039] Refer to Figure 1 , the present application also discloses an LNG mobile tank applicable to the connection structure with a protection function. Specifically, the LNG mobile tank includes an LNG storage tank 1, a vaporization mechanism 2, and a connection structure. Among them, the LNG storage tank 1 is used to store liquid LNG, and the vaporization mechanism 2 is used to vaporize the liquid LNG. At the same time, the LNG storage tank 1 is detachably connected to the vaporization mechanism 2 through the connection structure to facilitate the disassembly or connection between the LNG storage tank 1 and the vaporization mechanism 2, so as to facilitate the replacement of the LNG storage tank and complete the refueling of LNG fuel.
[0040] Refer to Figure 1 , the connection structure includes a gas-phase pipeline 3 and a liquid-phase pipeline 4. Among them, the gas-phase pipeline 3 is used to circulate gaseous natural gas, and the liquid-phase pipeline 4 is used to circulate liquid natural gas to facilitate the flow of LNG fuel in the LNG storage tank 1 through the connection structure.
[0041] At the same time, in this embodiment, the LNG mobile tank further includes a control valve 60. Among them, a control valve 60 is provided between the fixed flange 11 and the LNG storage tank 1 to selectively connect the fixed flange 11 and the LNG storage tank 1. At the same time, a control valve 60 is also provided between the fixed flange 11 and the vaporization mechanism 2 to selectively connect the fixed flange 11 and the vaporization mechanism 2.
[0042] In addition, the LNG mobile tank further includes a controller, and the controller is electrically connected to the control valve 60 and the detection mechanism 30 so that the controller can control the on-off of the control valve 60 through the detection signal fed back by the detection mechanism 30. That is, the controller can judge the connection tightness of the LNG storage tank 1 and the vaporization mechanism 2 with the connection structure through the detection signal fed back by the detection mechanism 30. After ensuring that the connection tightness between the connection structure and the LNG storage tank 1 and the vaporization mechanism 2 meets the preset requirements, the controller controls the control valve 60 to connect, so that LNG can flow through the connection structure, thereby ensuring the gas use safety of the LNG mobile tank.
[0043] It should be noted that in this embodiment, the detection mechanism 30 is also electrically connected to an alarm system and a display, so that when leakage occurs at the fixed flange 11 and the hose flange 22, the alarm system can send out an alarm signal, and the display can show which connection joint has a leakage. Specifically, the alarm system can be set as a buzzer or a flashing alarm light, etc.
[0044] In summary, the detection mechanism 30 can judge whether the connection tightness between the fixed flange 11 and the hose flange 22 meets the requirements by detecting the connection distance between the fixed flange 11 and the hose flange 22, and prevent LNG from leaking from the connection between the fixed flange 11 and the hose flange 22 after the connection between the fixed flange 11 and the hose flange 22 becomes loose.
[0045] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.
Claims
1. A connection structure with a protection function for connecting an LNG storage tank and a gasification mechanism, characterized in that, The connection structure includes: Fixed flanges; fixed flanges are respectively installed on the LNG storage tank and the gasification mechanism; A connecting hose, with hose flanges provided at both ends thereof; the hose flanges are detachably connected to the fixed flanges, so that the connecting hose can communicate the LNG storage tank and the gasification mechanism through the hose flanges and the fixed flanges; and A detection mechanism, which is installed on the fixed flange or the hose flange; the detection mechanism is used for measuring the distance between the fixed flange and the hose flange.
2. The connection structure according to claim 1, characterized in that The detection mechanism is a distance sensor; the distance sensor is installed on the fixed flange, and the detection part of the distance sensor faces the end face of the corresponding hose flange at the connection; or the distance sensor is installed on the hose flange, and the detection part of the distance sensor faces the end face of the corresponding fixed flange at the connection.
3. The connection structure according to claim 2, wherein The distance sensor is a contact sensor; the contact sensor is installed on the fixed flange or the hose flange through an adjusting nut, so that the extension amount of the detection part of the contact sensor can be adjusted through the adjusting nut.
4. The connection structure according to claim 1, characterized in that It further includes a seal; the seal is installed between the hose flange and the fixed flange to seal the connection between the hose flange and the fixed flange.
5. The connection structure according to claim 1, wherein It further includes a fastener; the fastener is connected between the fixed flange and the hose flange to tightly connect the fixed flange and the hose flange.
6. The connection structure according to claim 5, characterized in that, The fastener is a connecting bolt; bolt holes are provided on both the fixed flange and the hose flange; the connecting bolt passes through the bolt holes on the fixed flange and the hose flange.
7. An LNG mobile tank, applicable to the connection structure with protection function according to any one of claims 1-6, characterized in that, The LNG mobile tank includes: An LNG storage tank, which is used for storing liquid LNG; A gasification mechanism, which is used for gasifying liquid LNG; and A connection structure; Wherein, the LNG storage tank communicates with the gasification mechanism through the connection structure.
8. The LNG mobile tank according to claim 7, characterized in that, The connection structure includes a gas phase pipeline and a liquid phase pipeline; the gas phase pipeline is used for circulating gaseous natural gas; the liquid phase pipeline is used for circulating liquid natural gas.
9. The LNG mobile tank according to claim 8, wherein It further includes a control valve; the control valve is provided between the fixed flange and the LNG storage tank to selectively communicate the fixed flange and the LNG storage tank; the control valve is also provided between the fixed flange and the gasification mechanism to selectively communicate the fixed flange and the gasification mechanism.
10. The LNG mobile tank according to claim 9, wherein, It further includes a controller; the controller is electrically connected to the control valve and the detection mechanism, so that the controller can control the on-off of the control valve through the detection signal fed back by the detection mechanism.