Adjusting device for adjusting pressure of liquefied natural gas storage tank

Abstract

The utility model relates to the technical field of natural gas storage tanks, and discloses an adjusting device for adjusting the pressure of a liquefied natural gas storage tank, which comprises a liquefied natural gas storage tank body, a connecting flange is fixedly connected to the front side of the liquefied natural gas storage tank body, and a supporting table is fixedly connected to the bottom of the liquefied natural gas storage tank body. A first connecting pipe is fixedly connected to the top of the liquefied natural gas storage tank body, a second connecting pipe is fixedly connected to the right side of the first connecting pipe, a lifting ring is fixedly connected to the top of the liquefied natural gas storage tank body, an adjusting pressure relief mechanism is arranged in the first connecting pipe, and a movable adjusting mechanism is arranged in the second connecting pipe. In the using process, the position of the movable block can be adjusted conveniently through rotation of the threaded rod, the over-high pressure in the liquefied natural gas storage tank body can be automatically relieved conveniently through movement of the sealing ball, and limiting between the connecting plate and the baffle valve can be achieved conveniently through rotation of the rotating block.

Description

Technical Field

[0001] This utility model relates to the field of natural gas storage tank technology, specifically to a regulating device for adjusting the pressure of a liquefied natural gas storage tank. Background Technology

[0002] Liquefied natural gas (LNG) storage tanks are specialized products for storing LNG and play a role in stabilizing system pressure. Based on the pressure they can withstand, they can be classified as high-pressure tanks, low-pressure tanks, and atmospheric pressure tanks. Based on the material, they can be classified as carbon steel tanks, low-alloy steel tanks, and stainless steel tanks. During the delivery of LNG to users, the pressure and flow rate need to be regulated; therefore, regulating valves must be installed on the tank.

[0003] According to the patent application CN 216431253 U, "This utility model discloses a regulating device for regulating the pressure of a liquefied natural gas storage tank, including a storage tank body for storing natural gas, a press valve on the storage tank body, a fixed frame on the storage tank body, a valve body for cooperating with the press valve inside the fixed frame, a control plate body for preventing arbitrary rotation of the valve body inside the fixed frame, and a drive component for adjusting the position of the control plate body inside the fixed frame. This regulating device for regulating the pressure of a liquefied natural gas storage tank controls the movement state of the control plate body through the drive component. By pressing the power column, the locking rod slides along the inclined inner wall of the locking groove. When the locking rod moves to the bottom of the locking groove, the drive plate moves in the opposite direction under the action of the spring body, so that the locking rod fixes the drive plate. The through hole on the control plate body is offset from the press valve, thus hindering the downward pressure."

[0004] Regarding the above description, the applicant believes the following issues exist:

[0005] During use, this utility model controls the movement of the control panel body through a drive component, thereby controlling the pressing action of the pressing valve. Pressing down the pressing valve causes it to pass through the through hole on the control panel body and contact the valve body, thus regulating the pressure inside the storage tank. However, in actual use, this device only allows for manual operation to depressurize the storage tank body and cannot effectively meet the needs of automatic pressure regulation. The manual depressurization process requires two operations by the operator, which is inconvenient. Furthermore, the pressing design is prone to misoperation. Therefore, it is necessary to improve the device for regulating the pressure of liquefied natural gas storage tanks to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a regulating device for adjusting the pressure of liquefied natural gas storage tanks, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a regulating device for adjusting the pressure of a liquefied natural gas (LNG) storage tank, comprising an LNG storage tank body, a connecting flange fixedly connected to the front of the LNG storage tank body, a support platform fixedly connected to the bottom of the LNG storage tank body, a first connecting pipe fixedly connected to the top of the LNG storage tank body, a second connecting pipe fixedly connected to the right side of the first connecting pipe, a lifting ring fixedly connected to the top of the LNG storage tank body, an adjusting and pressure-relieving mechanism provided inside the first connecting pipe, and a movable adjusting mechanism provided inside the second connecting pipe;

[0008] The regulating and pressure-relieving mechanism includes an regulating component and a pressure-relieving component. The pressure-relieving component is disposed inside the first connecting pipe, and the regulating component is disposed outside the first connecting pipe.

[0009] Preferably, the adjustment assembly includes a first connecting platform, which is fixedly connected to the left side of the first connecting pipe, and a second connecting platform is fixedly connected to the right side of the first connecting pipe. A threaded rod is rotatably connected inside the first connecting platform, and a limit rod is fixedly connected inside the second connecting platform. A movable block is slidably connected to the outside of the limit rod, which facilitates the adjustment of the position of the movable block, thereby satisfying the adjustment of the spring force of the first spring and thus satisfying the adjustment and use for different pressure adjustment requirements.

[0010] Preferably, the movable block is threadedly connected to the threaded rod, slidably connected to the first connecting platform, slidably connected to the second connecting platform, and slidably connected to the first connecting pipe, which facilitates a more stable adjustment process.

[0011] Preferably, the pressure relief assembly includes a connecting ring, which is fixedly connected inside the first connecting pipe. A connecting block is fixedly connected to the bottom of the movable block, and a first spring is fixedly connected to the bottom of the connecting block. A slider is fixedly connected to the bottom of the first spring, and a sealing ball is fixedly connected to the bottom of the slider, which facilitates automatic pressure relief operation for excessive pressure inside the liquefied natural gas storage tank.

[0012] Preferably, the sealing ball contacts the connecting ring, and a groove is provided at the corresponding position of the first connecting pipe and the slider, and the slider is slidably connected inside the groove, which facilitates a more stable pressure relief process.

[0013] Preferably, the movable adjustment mechanism includes a baffle valve, which is disposed inside the second connecting pipe. A toothed plate is fixedly connected to the outside of the baffle valve, and a connecting plate is rotatably connected to the outside of the baffle valve. A connecting box is fixedly connected to the back of the connecting plate, and a second spring is fixedly connected inside the connecting box. A limit plate is fixedly connected to the bottom of the second spring, and a locking block is fixedly connected to the top of the limit plate. A rotating block is rotatably connected inside the connecting box, and a limit post is fixedly connected to the front of the rotating block. This facilitates the limiting of the connection between the connecting plate and the baffle valve, satisfying the opening and closing of the baffle valve while preventing accidental operation by non-staff members.

[0014] Preferably, the locking block is slidably connected to the connecting box, the locking block is in contact with the toothed plate, and the limiting plate and the limiting post are provided with grooves at corresponding positions, and the limiting post is in contact with the limiting plate, which facilitates more stable use.

[0015] Compared with the prior art, the present invention provides a regulating device for adjusting the pressure of liquefied natural gas storage tanks, which has the following beneficial effects:

[0016] 1. This regulating device for adjusting the pressure of a liquefied natural gas storage tank, through the setting of a pressure relief mechanism, allows for easy adjustment of the position of the movable block by rotating the threaded rod in conjunction with the limit rod, thereby satisfying the adjustment of the spring force of the first spring and meeting the adjustment needs of different pressures. Through the movement of the sealing ball, the slider slides inside the first connecting pipe, facilitating the automatic pressure relief operation for excessive pressure inside the liquefied natural gas storage tank.

[0017] 2. This regulating device for adjusting the pressure of liquefied natural gas storage tanks, through its movable regulating mechanism, allows the rotating block to rotate during use, working in conjunction with the limiting column to facilitate the limiting of the connection plate and the baffle valve, satisfying the opening and closing of the baffle valve while preventing accidental operation by non-staff members. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in 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.

[0019] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the present invention.

[0021] Figure 3This is a schematic diagram of the adjustment component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the adjustment component of this utility model;

[0023] Figure 5 This is a schematic diagram of the pressure relief component of this utility model;

[0024] Figure 6 This is a schematic diagram of the movable adjustment mechanism of this utility model;

[0025] Figure 7 This is a schematic diagram of the internal structure of the movable adjustment mechanism of this utility model.

[0026] In the diagram: 1. Liquefied natural gas storage tank; 2. Connecting flange; 3. Support platform; 4. First connecting pipe; 5. Second connecting pipe; 6. Lifting ring; 7. Adjusting and pressure relief mechanism; 71. Adjusting assembly; 711. First connecting platform; 712. Second connecting platform; 713. Threaded rod; 714. Movable block; 715. Limiting rod; 72. Pressure relief assembly; 721. Connecting ring; 722. Connecting block; 723. First spring; 724. Sliding block; 725. Sealing ball; 8. Movable adjusting mechanism; 81. Baffle valve; 82. Toothed plate; 83. Connecting plate; 84. Connecting box; 85. Rotating block; 86. Locking block; 87. Second spring; 88. Limiting plate; 89. Limiting post. Detailed Implementation

[0027] 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.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Example 1:

[0030] Given that current technologies only allow for manual depressurization of storage tanks and cannot adequately address the issue of automatic pressure regulation, this embodiment provides a pressure regulating device for liquefied natural gas (LNG) storage tanks. Please refer to [link to relevant documentation]. Figure 1-5 This utility model provides a technical solution: a regulating device for regulating the pressure of a liquefied natural gas (LNG) storage tank, including an LNG storage tank body 1, a connecting flange 2 fixedly connected to the front of the LNG storage tank body 1, a support platform 3 fixedly connected to the bottom of the LNG storage tank body 1, a first connecting pipe 4 fixedly connected to the top of the LNG storage tank body 1, a second connecting pipe 5 fixedly connected to the right side of the first connecting pipe 4, a lifting ring 6 fixedly connected to the top of the LNG storage tank body 1, an regulating and pressure relief mechanism 7 provided inside the first connecting pipe 4, and a movable regulating mechanism 8 provided inside the second connecting pipe 5;

[0031] The pressure relief mechanism 7 includes an adjustment component 71 and a pressure relief component 72. The pressure relief component 72 is disposed inside the first connecting pipe 4, and the adjustment component 71 is disposed outside the first connecting pipe 4.

[0032] Furthermore, the adjustment assembly 71 includes a first connecting platform 711, which is fixedly connected to the left side of the first connecting pipe 4. A second connecting platform 712 is fixedly connected to the right side of the first connecting pipe 4. A threaded rod 713 is rotatably connected inside the first connecting platform 711. A limit rod 715 is fixedly connected inside the second connecting platform 712. A movable block 714 is slidably connected to the outside of the limit rod 715, which facilitates the adjustment of the position of the movable block 714, thereby satisfying the adjustment of the elastic force of the first spring 723 and thus satisfying the adjustment needs for different pressures.

[0033] Furthermore, the movable block 714 is threadedly connected to the threaded rod 713, the movable block 714 is slidably connected to the first connecting platform 711, the movable block 714 is slidably connected to the second connecting platform 712, and the movable block 714 is slidably connected to the first connecting pipe 4, which facilitates a more stable adjustment process.

[0034] Furthermore, the pressure relief assembly 72 includes a connecting ring 721, which is fixedly connected inside the first connecting pipe 4. A connecting block 722 is fixedly connected to the bottom of the movable block 714. A first spring 723 is fixedly connected to the bottom of the connecting block 722. A slider 724 is fixedly connected to the bottom of the first spring 723. A sealing ball 725 is fixedly connected to the bottom of the slider 724, which facilitates the automatic pressure relief operation for excessive pressure inside the liquefied natural gas storage tank 1.

[0035] Furthermore, the sealing ball 725 contacts the connecting ring 721, and the first connecting pipe 4 and the slider 724 are provided with grooves at corresponding positions, and the slider 724 is slidably connected inside the groove, which facilitates a more stable pressure relief process.

[0036] Example 2:

[0037] Based on Embodiment 1, the existing manual depressurization process requires two operations by the operator, which is inconvenient and the pressing design is prone to misoperation. Therefore, this utility model provides Embodiment 2 to solve the above-mentioned technical problems. Please refer to Embodiment 2. Figure 6-7 Furthermore, in conjunction with Embodiment 1, the movable adjustment mechanism 8 includes a baffle valve 81, which is disposed inside the second connecting pipe 5. A toothed plate 82 is fixedly connected to the outside of the baffle valve 81, and a connecting plate 83 is rotatably connected to the outside of the baffle valve 81. A connecting box 84 is fixedly connected to the back of the connecting plate 83, and a second spring 87 is fixedly connected inside the connecting box 84. A limit plate 88 is fixedly connected to the bottom of the second spring 87, and a locking block 86 is fixedly connected to the top of the limit plate 88. A rotating block 85 is rotatably connected inside the connecting box 84, and a limit post 89 is fixedly connected to the front of the rotating block 85. This facilitates the limiting of the connection between the connecting plate 83 and the baffle valve 81, satisfying the opening and closing of the baffle valve 81 while preventing accidental operation by non-staff members.

[0038] Furthermore, the locking block 86 is slidably connected to the connecting box 84, the locking block 86 contacts the toothed plate 82, and the limiting plate 88 and the limiting post 89 are provided with grooves at corresponding positions, and the limiting post 89 contacts the limiting plate 88, which facilitates a more stable use process.

[0039] In actual operation, when this device is used, the operator first adjusts it according to the pressure regulation requirements. The operator rotates the threaded rod 713. The rotation of the threaded rod 713, in conjunction with the limit rod 715, causes the movable block 714 to move, thereby adjusting the position of the connecting block 722 and thus adjusting the elastic force of the first spring 723. After adjustment, when the internal pressure of the liquefied natural gas storage tank 1 is too high, the sealing ball 725 moves under the pressure. The movement of the sealing ball 725 causes the slider 724 to slide inside the first connecting pipe 4, in conjunction with... When the internal pressure of the liquefied natural gas storage tank 1 needs to be manually adjusted, the operator pinches the connecting box 84 and rotates the rotating block 85. The rotation of the rotating block 85, in conjunction with the limiting post 89, causes the limiting plate 88 to move. In conjunction with the second spring 87, the locking block 86 slides inside the connecting box 84. In conjunction with the toothed plate 82, the connecting plate 83 and the baffle valve 81 are limited. After the limiting is completed, the operator rotates the connecting plate 83 to rotate the baffle valve 81, thereby satisfying the need to adjust the internal pressure of the liquefied natural gas storage tank 1.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A regulating device for regulating the pressure of a liquefied natural gas storage tank comprising a liquefied natural gas storage tank body (1), characterized by: The liquefied natural gas storage tank (1) is fixedly connected to a connecting flange (2) on the front, a support platform (3) is fixedly connected to the bottom of the liquefied natural gas storage tank (1), a first connecting pipe (4) is fixedly connected to the top of the liquefied natural gas storage tank (1), a second connecting pipe (5) is fixedly connected to the right side of the first connecting pipe (4), a lifting ring (6) is fixedly connected to the top of the liquefied natural gas storage tank (1), an adjusting pressure relief mechanism (7) is provided inside the first connecting pipe (4), and an adjustable mechanism (8) is provided inside the second connecting pipe (5). The regulating pressure relief mechanism (7) includes an regulating component (71) and a pressure relief component (72). The pressure relief component (72) is disposed inside the first connecting pipe (4), and the regulating component (71) is disposed outside the first connecting pipe (4).

2. A regulator for regulating the pressure of a liquefied natural gas storage tank according to claim 1, characterized in that: The adjustment assembly (71) includes a first connecting platform (711), which is fixedly connected to the left side of the first connecting pipe (4). A second connecting platform (712) is fixedly connected to the right side of the first connecting pipe (4). A threaded rod (713) is rotatably connected inside the first connecting platform (711). A limit rod (715) is fixedly connected inside the second connecting platform (712). A movable block (714) is slidably connected to the outside of the limit rod (715).

3. A regulator for regulating the pressure of a tank of liquefied natural gas according to claim 2, characterised in that: The movable block (714) is threadedly connected to the threaded rod (713), the movable block (714) is slidably connected to the first connecting platform (711), the movable block (714) is slidably connected to the second connecting platform (712), and the movable block (714) is slidably connected to the first connecting pipe (4).

4. A regulator for regulating the pressure of a liquefied natural gas storage tank according to claim 2, characterized in that: The pressure relief assembly (72) includes a connecting ring (721) which is fixedly connected inside the first connecting pipe (4). A connecting block (722) is fixedly connected to the bottom of the movable block (714). A first spring (723) is fixedly connected to the bottom of the connecting block (722). A slider (724) is fixedly connected to the bottom of the first spring (723). A sealing ball (725) is fixedly connected to the bottom of the slider (724).

5. A regulator for regulating the pressure of a tank of liquefied natural gas according to claim 4, characterised in that: The sealing ball (725) contacts the connecting ring (721), and the first connecting tube (4) and the slider (724) are provided with grooves at corresponding positions, and the slider (724) is slidably connected inside the groove.

6. A regulator for regulating the pressure of a liquefied natural gas storage tank according to claim 1, characterized in that: The movable adjustment mechanism (8) includes a baffle valve (81), which is located inside the second connecting pipe (5). A toothed plate (82) is fixedly connected to the outside of the baffle valve (81). A connecting plate (83) is rotatably connected to the outside of the baffle valve (81). A connecting box (84) is fixedly connected to the back of the connecting plate (83). A second spring (87) is fixedly connected inside the connecting box (84). A limit plate (88) is fixedly connected to the bottom of the second spring (87). A locking block (86) is fixedly connected to the top of the limit plate (88). A rotating block (85) is rotatably connected inside the connecting box (84). A limit post (89) is fixedly connected to the front of the rotating block (85).

7. A regulator for regulating the pressure of a tank of liquefied natural gas according to claim 6, characterised in that: The card block (86) is in sliding connection with the connecting box (84), the card block (86) is in contact with the toothed plate (82), the limiting plate (88) is provided with a slot at the corresponding position of the limiting column (89), and the limiting column (89) is in contact with the limiting plate (88).

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