Horizontal supporting structure, thin film tank and thin film liquid cargo tank

Abstract

The invention provides a horizontal supporting structure, a thin film tank and a thin film liquid cargo tank, and the horizontal supporting structure comprises a sleeve which is sleeved outside a pump cylinder of a pump well in the thin film tank or the thin film liquid cargo tank; the number of the supporting cross beam assemblies is at least two, each supporting cross beam assembly is connected with the sleeve and the outer tank or the sleeve and the cabin, and the supporting cross beam assemblies are used for transmitting the horizontal stress of the pump cylinder to the outer tank or the cabin, limiting the horizontal movement of the pump cylinder and allowing the pump cylinder to vertically move; an included angle is formed between the ends, connected with the sleeve, of every two adjacent supporting cross beam assemblies, and the included angles are used for enabling the two supporting cross beam assemblies and an outer tank or a cabin to define a triangle. The horizontal supporting structure can limit horizontal movement of the pump well in the thin film tank or the thin film liquid cargo tank, so that the pump well can only move in the vertical direction.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of membrane tanks, and in particular to a horizontal support structure, a membrane tank, and a membrane liquid cargo tank. Background Art

[0002] The main component of liquefied natural gas is methane, which is recognized as the cleanest fossil energy on earth. As a new type of liquefied natural gas storage tank, LNG membrane tank has a thinner wall and more net volume under the same scale conditions. Its unique design features make membrane tanks widely used around the world.

[0003] The design concept of the membrane tank is to clearly separate the structure, insulation and airtightness, so that each part can be optimized and accidents can be effectively avoided. And such a design also makes the welding stress approach zero, and the membrane material will not crack, even under cyclic loading. The main membrane layer of the membrane tank is made of corrugated stainless steel film, and the secondary membrane layer is made of composite material. It can store LNG at minus 163 degrees Celsius and prevent its leakage, while limiting the evaporation loss of LNG. The membrane tank ensures the independence of the tank structure and the airtight structure, and can carry out hydraulic and pneumatic tests of the concrete structure, integrity detection of hot corner protection, and integrity detection of the inner tank. Due to the need to carry insulators, if a 9% nickel steel full-containment tank and a membrane tank are built at the same address, the concrete outer wall of the latter will be stronger than the concrete outer wall of the former. In addition, the membrane is only used as a container for storing liquid. No matter how large the volume of the tank is, the structural design of the membrane block is the same.

[0004] LNG ship is a special ship for transporting liquefied gas at low temperature (-163℃), and is a "super refrigerated truck at sea". LNG pump well is a facility for installing submersible pumps (LNG pumps), located inside LNG storage tanks and liquid cargo tanks, and plays a key role in the LNG feeding process. For the traditional full-containment tank structure, the upper and lower ends of the pump barrel are connected, but this support has little constraint on the shaking of the pump barrel. There is a bottom valve inside the pump well, and the main components of the bottom valve include springs, bottom cover plates, sealing rings, etc. When the pump is installed, the bottom valve is opened by the gravity of the pump, and the pump well is connected to the storage tank; when the pump is taken out for maintenance, the valve is closed to isolate the storage tank space from the pump well space. This traditional pump barrel structure is nearly 10-100 meters long, about 0.1-1 meters in diameter, about 5-100 meters away from the center of the storage tank, and there is no support inside. Safety and stability in the application stage of the membrane tank are crucial. When LNG is fed, it is inevitable that the entire pump barrel structure will shake and the force will increase. In addition, under earthquake conditions, since the calculated length of the entire pump barrel is too long, the seismic load will cause the stress in the middle part of the pump barrel to increase rapidly, which poses a huge challenge to ensuring the safety of the pump barrel structure of the membrane-type storage tank.

[0005] LNG membrane storage tanks have extremely high safety requirements, and the structural stability of the pump barrel is a key factor that needs to be considered during operation. The pump well of a full-containment tank is supported on an inner tank that can bear force. Since the membrane of the inner tank of a membrane tank cannot bear the load, an integrated pump well structure is used. At present, there are few optimized structures for the stability of the pump well of LNG membrane tanks. Traditional structural forms are difficult to efficiently support and fix the pump barrel under conditions such as feeding and earthquakes. Therefore, a stable support structure is required to constrain the pump barrel, achieve more reasonable force and a more stable pump well structure, solve the movement and limit problems of the pump pipe, and limit the movement of the pump pipe in the storage tank to the vertical direction. The shortcomings of traditional pump well stability support are as follows:

[0006] The bottom of the LNG membrane storage tank cannot bear weight, so the pump pipe can only be integrated into a pump tower and fixed on the top of the tank. The traditional pump well of the LNG membrane storage tank is connected to the top beam frame, and the upper and lower ends are connected. The pump barrel is less stable, which can easily cause the pump barrel connection to shake. In addition, the length of the traditional pump well of the LNG membrane storage tank is close to 100 meters. The lack of stability will cause uneven force, and the force in the middle part of the pump barrel is much higher than that at both ends. When the traditional pump well of the LNG membrane storage tank is affected by an earthquake, the up and down shaking of the pump barrel will cause the internal liquid to shake, exerting a horizontal load on the tank. In addition, because the pump pipe will expand and contract when the temperature changes, it is necessary to ensure that the pump tower can move up and down as a whole during installation. However, the pump pipe will be subjected to horizontal stress when the temperature changes, causing the pump pipe to break. Summary of the invention

[0007] The present invention provides a horizontal supporting structure for limiting the horizontal movement of a pump well in a membrane tank or a membrane liquid cargo tank so that the pump well can only move in the vertical direction, and a membrane tank and a membrane liquid cargo tank.

[0008] In order to solve the above technical problems, an embodiment of the present invention provides a horizontal support structure, characterized in that it is applied to a membrane tank or a membrane liquid cargo tank, the membrane liquid cargo tank is arranged in the cabin of a ship, and the horizontal support structure includes:

[0009] A sleeve, which is sleeved outside a pump barrel of a pump well in the membrane tank or membrane liquid cargo tank;

[0010] A supporting crossbeam assembly, comprising at least two, one end of each of the supporting crossbeam assemblies being fixedly connected to the sleeve, and the other end of each of the supporting crossbeam assemblies penetrating the inner tank and the thermal insulation layer of the membrane tank and being connected to the outer tank of the membrane tank, or the other end of each of the supporting crossbeam assemblies penetrating the bulkhead and the thermal insulation layer of the membrane liquid cargo tank and being connected to the cabin, the supporting crossbeam assemblies being used to transfer the horizontal stress of the pump barrel to the outer tank or the cabin, and to restrict the horizontal movement of the pump barrel, while allowing the pump barrel to move vertically;

[0011] There is an angle between two adjacent supporting beam assemblies and one end connected to the sleeve, and the angle is used to enable the two supporting beam assemblies and the outer tank or the cabin to form a triangle.

[0012] In some embodiments, the support beam assembly comprises:

[0013] A connecting piece connected to the sleeve;

[0014] A supporting crossbeam, connected to the connecting piece and the outer tank, or connected to the connecting piece and the cabin, respectively;

[0015] Wherein, the connecting member and the supporting beam are movably connected, and when the pump barrel moves vertically, it can drive the connecting member and the supporting beam to produce relative movement.

[0016] In some embodiments, the supporting beam assembly further includes a damping module, and the damping module is movably connected to the connecting member and the supporting beam, respectively, so that the supporting beam, the damping module, and the connecting member can move relative to each other.

[0017] In some embodiments, the support beam assembly further includes embedded parts, the embedded parts are disposed in the outer tank, the support beam is connected to the embedded parts, and the connection method between the support beam and the embedded parts includes a fixed connection and a movable connection.

[0018] In some embodiments, the inner tank and the insulation layer of the film tank are provided with first holes correspondingly, and the supporting beam passes through the first holes and is connected to the outer tank; or

[0019] The bulkhead and the insulation layer of the membrane liquid cargo tank are provided with second holes correspondingly, and the supporting beam passes through the second holes and is connected to the cabin;

[0020] Wherein, the space between the supporting crossbeam and the first hole of the heat-insulating layer is filled with a heat-insulating material, or the space between the supporting crossbeam and the second hole of the heat-insulating layer is filled with a heat-insulating material.

[0021] In some embodiments, the supporting beam assembly includes multiple, multiple supporting beam assemblies are divided into multiple groups, each group includes at least two supporting beam assemblies, and multiple groups of supporting beam assemblies are arranged in a symmetrical form relative to the pump barrel axis between the sleeve and the outer tank, or between the sleeve and the cabin.

[0022] In some embodiments, the support beam assembly is arranged horizontally, and one end of the support beam assembly is connected to the area of ​​the sleeve corresponding to the middle of the pump barrel, and the middle includes any position of the pump barrel between its two ends.

[0023] In some embodiments, the angle ranges from 0° to 180°.

[0024] Another embodiment of the present invention also provides a film tank, including an inner tank, an outer tank, a pump well arranged in the inner tank, and a horizontal support structure as described in any of the embodiments above, one end of the horizontal support structure is connected to the pump well, and the other end passes through the inner tank and is connected to the outer tank.

[0025] Another embodiment of the present invention also provides a membrane liquid cargo tank, which is arranged in the cabin of a ship hull, and is characterized in that it includes a pump well and a horizontal support structure as described in any of the embodiments above, one end of the horizontal support structure is connected to the pump well, and the other end passes through the bulkhead and is connected to the cabin.

[0026] Based on the disclosure of the above embodiments, it can be known that the beneficial effects of the embodiments of the present invention include providing a sleeve sleeved outside the pump barrel of the pump well in the membrane tank or membrane cargo tank, and at least two supporting beam assemblies, and at the same time making one end of each supporting beam assembly fixedly connected to the sleeve, and the other end passing through the inner tank and insulation layer of the membrane tank, and connected to the outer tank of the membrane tank, or the other end passing through the bulkhead and insulation layer of the membrane cargo tank, and connected to the cabin, so that the horizontal stress generated when the pump well is shaken by external force can be transmitted to the outer tank or cabin to be eliminated, thereby limiting the horizontal movement of the pump barrel and only being able to move in the vertical direction. Therefore, it can effectively ensure the safe and stable operation of the pump well, so that the pump barrel structure of the pump well always maintains a uniform and reasonable stress state under various working conditions, and completely solves the problems of weak stability of the traditional pump well structure, much higher stress in the middle than at both ends, and uneven stress, which is easy to cause damage to the barrel.

[0027] In addition, by setting an angle between the ends of two adjacent supporting beam assemblies connected to the sleeve, a stable triangular structure can be formed between the two supporting beam assemblies and the outer tank or the cabin, thereby ensuring that horizontal stress can be transferred to the outer tank or the cabin under any working conditions.

[0028] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0029] The technical solution of the present application is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 Schematic diagram of the structure of the horizontal support structure in an embodiment of the present invention.

[0032] Figure 2 Schematic diagram of the structure of a horizontal support structure in another embodiment of the present invention.

[0033] Reference numerals:

[0034] 1-pump barrel; 2-sleeve; 3-connecting piece; 4-damping module; 5-supporting beam; 6-inner tank; 7-insulation layer; 8-thermal insulation material; 9-embedded parts; 10-outer tank; 11-cabin. DETAILED DESCRIPTION

[0035] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0036] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the following description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope of the present disclosure will occur to those skilled in the art.

[0037] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0038] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0039] It should also be understood that, although the invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the invention that have the characteristics recited in the claims and are therefore within the scope of protection defined thereby.

[0040] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0041] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0042] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0043] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a horizontal support structure, which is applied to a membrane tank or a membrane liquid cargo tank, wherein the membrane liquid cargo tank is arranged in a cabin 11 of a ship hull, and the horizontal support structure comprises:

[0045] A sleeve 2 is sleeved outside the pump barrel 1 of the pump well in the membrane tank or membrane liquid cargo tank;

[0046] A supporting crossbeam assembly, comprising at least two, one end of each of the supporting crossbeam assemblies being fixedly connected to the sleeve 2, and the other end of each of the supporting crossbeam assemblies penetrating the inner tank 6 and the insulation layer 7 of the membrane tank and connected to the outer tank 10 of the membrane tank, or the other end of each of the supporting crossbeam assemblies penetrating the bulkhead and the insulation layer 7 of the membrane liquid cargo tank and connected to the cabin 11, the supporting crossbeam assemblies being used to transfer the horizontal stress of the pump barrel 1 to the outer tank 10 or the cabin 11, and to restrict the horizontal movement of the pump barrel 1, while allowing the pump barrel 1 to move vertically;

[0047] There is an angle between two adjacent supporting beam assemblies and one end connected to the sleeve 2 , and the angle is used to enable the two supporting beam assemblies and the outer tank 10 or the cabin 11 to form a triangle.

[0048] The structure of the sleeve 2 in this embodiment matches the structure of the pump barrel 1, and can be slightly larger than the pump barrel 1 to facilitate assembly, while not squeezing the pump barrel 1 and affecting the vertical movement of the pump barrel 1. The pump barrel 1 is a rigid pump barrel 1, and its preparation material is not limited, and can be any organic or inorganic material with good mechanical properties and low friction. The thickness of the sleeve 2 is not limited, but it should not be too thin, which will make it difficult to connect and cause loose connection, and it should not be too thick, which will make the dome of the membrane tank and membrane liquid cargo tank overloaded and increase the cost.

[0049] The support beam assembly is provided to achieve stress conduction, specifically to conduct the horizontal stress of the pump well to the outer tank 10 or the cabin 11 of the membrane tank to dissipate the horizontal stress, and at the same time to provide a horizontal limiting force for the pump well, so that the pump well can only move freely in the vertical direction, and cannot move in the horizontal direction. In this way, when the hull of the transport ship is affected by the sea conditions and causes bumps and sloshing, that is, when the cabin 11 is in a sloshing condition, the liquid in the membrane liquid cargo tank will slosh at the same time, thereby applying a horizontal load to the tank body. At this time, the support beam assembly can absorb the load and conduct it to the external cabin 11 for load dissipation. At the same time, the rigid structure of the support beam assembly is used to provide a limiting force for the pump well in the horizontal direction, thereby ensuring that the pump well has only a vertical load, but no horizontal load, so that the pump barrel 1 is continuously in a stable state in the horizontal direction, thereby effectively protecting and assisting the safe and reliable operation structure of the ship. Or in the event of an earthquake at the location of the land-based membrane tank, the pump barrel 1 will shake up and down, causing the internal liquid to shake, generating a horizontal load on the storage tank. At this time, the supporting beam assembly can transmit the load to the outer tank 10 of the membrane tank for dissipation, so that the inner tank 6 of the membrane tank will not be impacted by the horizontal load, effectively ensuring that the membrane tank is always in a structurally stable and safe state.

[0050] Among them, in this embodiment, an angle is set between the ends of the two adjacent supporting beam assemblies connected to the sleeve 2, so that the two supporting beam assemblies and the outer tank 10 or the cabin 11 can form a triangular structure. This is because the triangular structure is the most stable and can ensure that the horizontal stress can be transmitted to the outer tank 10 or the cabin 11 under any working conditions, thereby minimizing the vibration of the pump well and the pump barrel 1 to the greatest extent and always maintaining a highly stable structure.

[0051] Based on the above content, it can be known that the horizontal support structure in this embodiment can effectively ensure the safe and stable operation of the pump well, so that the pump well can always maintain a uniform and reasonable force state in the pump barrel 1 structure under various working conditions, and completely solve the problem of weak stability of the traditional pump well structure, and uneven force such as the force in the middle is much higher than that at both ends, which is easy to cause damage to the barrel. Especially when the length of the pump barrel 1 is about 100 meters, the horizontal support structure based on this embodiment can realize that the entire pump barrel 1, including the middle part and the two ends, is uniformly stressed, and no horizontal shaking occurs, so that the membrane tank or membrane liquid cargo tank can be effectively protected during use.

[0052] The angle between the supporting cross beam assemblies in this embodiment ranges from 0° to 180°, and the specific value is not limited. It can be an acute angle, an obtuse angle, or a 180° angle, that is, the two supporting cross beam assemblies are symmetrically arranged, and the specific angle can be determined according to the number of supporting cross beam assemblies arranged, the size of the pump barrel 1, etc.

[0053] Since the pump barrel 1 is usually large in size and long in length, when shaking occurs, the load generated in the middle section will be higher than the end section. Therefore, in order to more efficiently evacuate the horizontal load and ensure that the pump barrel 1 is evenly stressed, the present embodiment preferably arranges the support beam assembly horizontally, and at the same time connects one end of the support beam assembly to the area of ​​the sleeve 2 corresponding to the middle section of the pump barrel 1, so as to conduct the horizontal load in the middle section of the pump barrel 1 to the outer tank 10 or the cabin 11 for dissipation as soon as possible, thereby improving the conduction efficiency. The middle section of the pump barrel 1 described in the present embodiment includes any position of the pump barrel 1 between its two ends. For example, it may be 1 / 2, 1 / 3, 2 / 3, etc. of the pump barrel 1.

[0054] Specifically, in one embodiment, the supporting beam assembly includes:

[0055] A connecting member 3 connected to the sleeve 2;

[0056] A supporting crossbeam 5, connected to the connecting member 3 and the outer tank 10, or connected to the connecting member 3 and the cabin 11;

[0057] The connection member 3 and the supporting beam 5 are movably connected, and when the pump barrel 1 moves vertically, it can drive the connection member 3 and the supporting beam 5 to generate relative movement.

[0058] Exemplarily, the specific structure of the connector 3 is not limited. In this embodiment, the connector 3 is a structural member made of steel or other alloy materials, one end of which can be welded or anchored to the sleeve 2. If the sleeve 2 is made of non-metallic materials, a metal embedded part 9 can be arranged inside it to achieve welding and fixation with the connector 3. The other end of the connector 3 is movably connected to the support beam 5, including a rotating connection or a chain connection, etc. In this embodiment, it is preferred to connect the connector 3 to the support beam 5 in a hinged manner. In this way, when the pump barrel 1 moves in the vertical direction, the support beam 5 and the connector 3 will not restrict the movement of the pump barrel 1, but will produce relative rotation with the movement of the pump barrel 1 to comply with the vertical movement of the pump barrel 1.

[0059] In order to increase the horizontal movement restriction on the pump barrel 1, the support beam assembly in this embodiment also includes a damping module 4, and the damping module 4 is movably connected to the connecting member 3 and the support beam 5 respectively, so that the support beam 5, the damping module 4 and the connecting member 3 can move relative to each other.

[0060] The damping module 4 can be, but is not limited to, a damper. The support beam 5 is connected to the connecting member 3 through the damper. In this embodiment, the support beam 5, the connecting member 3 and the damper are rotatably connected, for example, they can still be hinged. The setting of the damping module 4 can further absorb the horizontal load generated by the pump barrel 1, can more effectively assist in limiting the movement of the pump barrel 1 in the horizontal direction, and can reduce the load transmitted to the outer tank 10 or the cabin 11, reduce the transmission load, and improve the transmission efficiency and the dissipation efficiency of the horizontal load.

[0061] Furthermore, the outer tank 10 of the membrane tank in this embodiment is made of concrete. Therefore, when the horizontal support structure is applied to the membrane tank, in order to facilitate the connection between the support beam 5 and the outer tank 10 and improve the connection stability, the support beam assembly in this embodiment also includes an embedded part 9, which is arranged in the outer tank 10, and the support beam 5 is connected to the embedded part 9. The connection between the support beam 5 and the embedded part 9 includes a fixed connection and a movable connection. That is, the support beam 5 can be connected to the embedded part 9 in a fixed connection so that the position between the two is fixed and cannot move relative to each other, or it can be connected in a movable connection so that the two can move relative to each other, such as when the pump barrel 1 moves in the vertical direction to generate relative movement.

[0062] The supporting beam 5 in this embodiment can be a metal rod with an I-shaped, rectangular, circular or other cross-section. The entire rod can be straight or arc-shaped, etc., but it should be kept horizontal as much as possible to avoid affecting the transmission efficiency and transmission amount of the horizontal load.

[0063] The inner tank 6 and the insulation layer 7 of the film tank are provided with first holes correspondingly, and the supporting beam 5 passes through the first holes and is connected to the outer tank 10; or

[0064] The bulkhead and the insulation layer 7 of the membrane liquid cargo tank are provided with second holes correspondingly, and the supporting beam 5 passes through the second holes and is connected to the cabin 11;

[0065] The support beam 5 and the first hole of the insulation layer 7 are filled with insulation material 8, or the support beam 5 and the second hole of the insulation layer 7 are filled with insulation material 8. The insulation material 8 may be, for example, but not limited to, glass wool. By filling the insulation material 8, the joint of the support beam 5 can be insulated to avoid heat conduction through the joint and affect the temperature of the medium in the tank.

[0066] In actual application, according to the size of the pump barrel 1 and the use environment, such as marine transportation, liquid storage on land plains, liquid storage on land mountains, etc., different pump barrel 1 sizes or different use environments will have different requirements for conducting horizontal stresses, and different numbers of supporting beam assemblies can be selected to correspond to different requirements.

[0067] For example, the supporting beam assembly in this embodiment includes multiple, and the multiple supporting beam assemblies can be divided into multiple groups, each group includes at least two supporting beam assemblies, and the multiple groups of supporting beam assemblies need to be arranged in a symmetrical form relative to the axis of the pump barrel 1 between the sleeve 2 and the outer tank 10, or between the sleeve 2 and the cabin 11, so as to ensure that the pump barrel 1 is subjected to uniform force at various locations, and there will be no phenomenon of different horizontal loads in different areas.

[0068] Specifically, each group of the supporting beam assemblies may include two, four, etc. supporting beam assemblies, and may be composed of an even number of supporting beam assemblies or an odd number of supporting beam assemblies. Two adjacent supporting beam assemblies in each group cooperate with the connected outer tank 10 or cabin 11 to form a triangle. The supporting beam assemblies in the same group may be arranged in the same plane, and the supporting beam assemblies in different groups may be arranged in different planes. Multiple groups of the supporting beam assemblies may be arranged uniformly and at intervals along the length direction of the pump barrel 1. Of course, multiple groups of supporting beam assemblies may also be arranged in the same plane. The specific arrangement is not unique, but it is necessary to ensure that all supporting beam assemblies are symmetrical relative to the axis of the pump barrel 1.

[0069] Another embodiment of the present invention also provides a membrane tank, comprising an inner tank, an outer tank, a pump well provided in the inner tank, and a horizontal support structure as described in any of the above embodiments, wherein one end of the horizontal support structure is connected to the pump well, and the other end passes through the inner tank and is connected to the outer tank. The membrane tank can be used on land.

[0070] Another embodiment of the present invention also provides a membrane liquid cargo tank, which is arranged in the cabin of a ship, including a pump well and a horizontal support structure as described in any of the embodiments above, one end of the horizontal support structure is connected to the pump well, and the other end passes through the bulkhead and is connected to the cabin.

[0071] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A horizontal support structure, characterized in that: Applied to a membrane tank or a membrane liquid cargo tank, the membrane liquid cargo tank is arranged in the cabin of a ship, and the horizontal support structure includes: A sleeve, which is sleeved outside the pump barrel of the pump well in the membrane tank or membrane liquid cargo tank; A supporting crossbeam assembly, comprising at least two, one end of each of the supporting crossbeam assemblies being fixedly connected to the sleeve, and the other end of each of the supporting crossbeam assemblies penetrating the inner tank and the thermal insulation layer of the membrane tank and being connected to the outer tank of the membrane tank, or the other end of each of the supporting crossbeam assemblies penetrating the bulkhead and the thermal insulation layer of the membrane liquid cargo tank and being connected to the cabin, the supporting crossbeam assemblies being used to transfer the horizontal stress of the pump barrel to the outer tank or the cabin, and to restrict the horizontal movement of the pump barrel, while allowing the pump barrel to move vertically; There is an angle between two adjacent supporting beam assemblies and one end connected to the sleeve, and the angle is used to enable the two supporting beam assemblies and the outer tank or the cabin to form a triangle.

2. The horizontal support structure according to claim 1, characterized in that: The supporting beam assembly comprises: A connecting piece connected to the sleeve; A supporting crossbeam, connected to the connecting piece and the outer tank, or connected to the connecting piece and the cabin, respectively; Wherein, the connecting member and the supporting beam are movably connected, and when the pump barrel moves vertically, it can drive the connecting member and the supporting beam to produce relative movement.

3. The horizontal support structure according to claim 2, characterized in that: The supporting crossbeam assembly also includes a damping module, which is movably connected to the connecting member and the supporting crossbeam respectively, so that the supporting crossbeam, the damping module and the connecting member can move relative to each other.

4. The horizontal support structure according to claim 2, characterized in that: The supporting crossbeam assembly also includes embedded parts, which are arranged in the outer tank. The supporting crossbeam is connected to the embedded parts. The connection mode between the supporting crossbeam and the embedded parts includes fixed connection and movable connection.

5. The horizontal support structure according to claim 1, characterized in that: The inner tank and the insulation layer of the film tank are provided with first holes correspondingly, and the supporting beam passes through the first holes and is connected to the outer tank; or The bulkhead and the insulation layer of the membrane liquid cargo tank are provided with second holes correspondingly, and the supporting beam passes through the second holes and is connected to the cabin; Wherein, the space between the supporting crossbeam and the first hole of the heat-insulating layer is filled with a heat-insulating material, or the space between the supporting crossbeam and the second hole of the heat-insulating layer is filled with a heat-insulating material.

6. The horizontal support structure according to claim 1, characterized in that: The supporting crossbeam assemblies include multiple ones, and the multiple supporting crossbeam assemblies are divided into multiple groups, each group includes at least two supporting crossbeam assemblies, and the multiple groups of supporting crossbeam assemblies are arranged in a symmetrical form relative to the pump barrel axis between the sleeve and the outer tank, or between the sleeve and the cabin.

7. The horizontal support structure according to claim 1, characterized in that: The supporting crossbeam assembly is arranged horizontally, and one end of the supporting crossbeam assembly is connected to the area of ​​the sleeve corresponding to the middle of the pump barrel, and the middle includes any position of the pump barrel between its two ends.

8. The horizontal support structure according to claim 1, characterized in that: The angle ranges from 0° to 180°.

9. A film tank, characterized in that: It comprises an inner tank, an outer tank, a pump well arranged in the inner tank, and a horizontal support structure as described in any one of claims 1 to 8, wherein one end of the horizontal support structure is connected to the pump well, and the other end passes through the inner tank and is connected to the outer tank.

10. A membrane liquid cargo tank, arranged in a cabin of a ship, characterized in that: It comprises a pump well and a horizontal supporting structure as claimed in any one of claims 1 to 8, wherein one end of the horizontal supporting structure is connected to the pump well, and the other end penetrates the bulkhead and is connected to the cabin.

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