Flexible transport bag having heating function

Abstract

A flexible transport bag (1) having a heating function. The flexible transport bag has a suspension heating unit (11), wherein the suspension heating unit (11) is placed inside the flexible transport bag (1). During use, the suspension heating unit (11) can be suspended in a liquid to be transported, and the suspension heating unit (11) controls said liquid to change in a liquid state due to a temperature change. The suspension heating unit (11) can overcome a drastic change in liquid viscosity caused by the temperature change during liquid transportation, so as to avoid damage to the flexible transport bag, thereby reducing the difficulty of loading and unloading.

Description

Flexible transport bag with heating function TECHNICAL FIELD

[0001] The present application relates to the field of packaging transportation, in particular to a flexible transport bag with heating function. BACKGROUND

[0002] Flexible transport bags are usually used in liquid transportation process, which can effectively prevent leakage, corrosion of containers and other effects during liquid transportation, so it is widely used in food, chemical raw materials, petroleum and other applications in the liquid transportation industry.

[0003] During the liquid transportation process, some transport materials have high requirements for temperature, such as palm oil, asphalt, lubricating oil, paraffin and other materials, which will change greatly in physical state when the temperature changes, thereby affecting the loading and unloading of the material, so it is necessary to keep the temperature of such materials during transportation or loading and unloading.

[0004] The existing technology for solving the problem of temperature change of transport materials mostly focuses on using external auxiliary heating method, that is, using electric heating or steam heating at the bottom of the flexible transport bag or in the container to adjust the temperature of the material, but this method generally has the problems of long heating time, high energy consumption, easy damage of flexible transport bag and other problems. SUMMARY

[0005] The present application aims to provide a flexible transport bag with heating function, which is used for transporting liquid on trucks, ships and trains, and has a suspended heating unit; the suspended heating unit is placed in the flexible transport bag. After the flexible transport bag with heating function is filled with transport liquid, the suspended heating unit is in a suspended state, and through the setting of the suspended heating unit, the device can provide intermittent or continuous energy supply as needed, overcoming the problems of transport difficulty, damage of flexible transport bag, difficulty in loading and unloading, large heating energy consumption and low efficiency caused by the dramatic change of liquid state due to temperature change during the transportation of part of the transport liquid raw materials, such as the change from liquid state to solid state.

[0006] The heating method of the flexible transport bag, the scheme in the prior art mainly concentrates on the external heating method, that is, setting a heating pad outside the container. Since there is a gap between the heating pad and the transport bag, the contact is not sufficient, and only half (side) of the heat energy of the heating pad is applied to the transport bag through heat conduction. The heat energy loss of this heating pad method is very high, the heating efficiency is low, and the transport efficiency is seriously affected. Another is to set a heating film layer between the inner container and the outer layer of the transport bag. This setting increases the contact area between the heating unit and the transport bag to a certain extent (the contact is more sufficient), but since heat exchange includes heat radiation from the flexible transport bag towards the liquid and another part of heat radiation from the flexible transport bag towards the outside of the transport bag, it is impossible to avoid the defect of high energy consumption. In order to further improve the energy utilization rate, the prior art also has a heating method of directly inserting a heating pipe into the transport bag (steam, hot water). This method has two ways: one is to connect and fix the heating pipe with the inner container, and the other is to directly insert the pipe into the transport liquid. Both ways can reduce energy consumption to a certain extent. For the first scheme, the flexible pipe is fixed around the transport bag and can increase the length of the flexible pipe through winding to increase the heating effect, but it is difficult to avoid the heat loss problem of the flexible pipe because part of the heat will be lost at the contact position (heat fusion joint). At the same time, for the heat fusion pipe with a large area in the inner container, it is a very complex operation scheme. In addition, during the transportation process, due to the fixed setting of the pipe, the inertial movement of the transport liquid during the transportation process cannot be avoided. This movement will make the impact force between the liquid and the pipe very strong, which will easily cause damage to the heat fusion node. For the second scheme, the directly inserted pipe is usually short, and the heating efficiency is low. In addition, for the above two schemes of directly inserting the heating pipe into the transport bag, since the heating pipe is fixed to the side wall of the flexible transport bag, after the transport liquid solidifies, the side heating pipe will be squeezed due to gravity, the pipe space will be reduced, and the pipe will be easily blocked. When inflating again, there is difficulty. For the suspended heating unit, since the suspended heating unit is completely in the transport liquid, it can obviously avoid the blocking problem of the heating pipe.

[0007] Further, the flexible bag is basically in a flat state when not filled with transport liquid, and can be folded to reduce storage and transportation space. After the flexible transport bag is filled with transport liquid, it becomes a three-dimensional state.

[0008] Further, the flexible transport bag is generally in a cylindrical state.

[0009] It should be noted that the shape of the flexible transport bag after being filled with the transport liquid will change according to the shape of the transport container, for example, when the container is a cuboid, the flexible transport bag will be in contact with the cuboid container on the four sides, and the overall shape will be similar to a cylinder; when the transport container is a tank, the flexible transport bag will be in a cylindrical shape.

[0010] Further, the flexible transport bag comprises at least one valve, and the at least one valve is used for loading and unloading the liquid.

[0011] In some embodiments, the flexible transport bag comprises at least two valves, and at least one of the valves is used for adjusting the gas (pressure) in the flexible transport bag.

[0012] Further, the at least two valves are arranged in a vertical direction on the flexible transport bag, that is, the two valves have a certain height difference.

[0013] After the flexible transport bag is filled with the transport liquid, the flexible transport bag is roughly divided into a bottom part, a side part, a front part, a rear part and an upper part.

[0014] In the case of container transport, the bottom part is in contact with the bottom of the container, the side part is in contact with the wall of the container, the front part is in contact with the side of the container without a door, and the rear part is in contact with the door of the container.

[0015] It should be noted that in the case of transport tank, the flexible transport bag is also divided into the above-mentioned parts.

[0016] In some embodiments, the at least one valve is arranged on the rear part of the flexible transport bag.

[0017] The valve arranged on the rear part of the flexible transport bag can realize the inflow and outflow of the liquid in the flexible transport bag.

[0018] In some embodiments, the at least one valve is arranged on the upper part or the rear part of the flexible transport bag.

[0019] The arrangement of the valve can meet the requirements of the inflow and outflow of the liquid, and can also meet the requirements of the adjustment of the gas pressure in the flexible transport bag.

[0020] In some embodiments, the suspension heating unit is connected to the flexible transport bag, and during the transport of the liquid, the suspension heating unit is entirely in the transport liquid.

[0021] The suspension heating unit can be suspended in the liquid in the flexible transport bag.

[0022] Further, the suspension heating unit is fixedly connected with the flexible transport bag.

[0023] It should be noted that the fixed connection between the suspension heating unit and the flexible transport bag is not rigidly fixed, but relatively enables the suspension heating unit to have a certain range of movement in the transport liquid.

[0024] Further, the suspension heating unit and the inner wall of the flexible transport bag are fixedly connected by single-point hot melting, multi-point hot melting, sewing, or adhesive fixing.

[0025] Specifically, the suspension heating unit is connected with at least the upper portion and / or the bottom portion of the flexible transport bag.

[0026] In some possible embodiments, the suspension heating unit can also be connected with the side portion, the front portion, and the rear portion of the flexible transport bag.

[0027] Specifically, the suspension heating unit is suspended in the liquid material during the transportation.

[0028] The suspension heating unit comprises a body and a heating assembly.

[0029] It should be noted that the heating assembly herein includes components with heating and / or heat exchange functions, for example, the components such as electric resistance wires and electric heating plates can convert electrical energy into heat energy and exchange heat with the transport liquid; and for heat exchange pipes, steam, hot oil, or hot water is used for heat exchange.

[0030] The heating assembly is one or a combination of a heat exchange pipe, an electric resistance wire, and an electric heating plate.

[0031] The body is made of polyethylene, polypropylene, polyurethane, or polyester.

[0032] The suspension of the suspension heating unit in the transport liquid is achieved by the density difference between the suspension heating unit and the transported liquid material, for example, the suspension heating unit can be made of polyester, polypropylene, or other plastic materials, and on the basis of the above-mentioned materials, foaming process or the like can be used to make the density of the suspension heating unit different from that of the transported liquid material, thereby achieving suspension.

[0033] In some embodiments, the suspension heating unit is fixed to the flexible transport bag by a first fixing member;

[0034] The first fixing member can be made of polyethylene, polypropylene or polyester material.

[0035] One end of the first fixing member is fixed to the suspension heating unit by hot melting, mechanical sewing or bonding.

[0036] The other end of the first fixing member is connected to the flexible transport bag by hot melting, mechanical sewing or bonding.

[0037] The first fixing member is connected by using a strip, sheet or rope material, and the connecting material has a certain elasticity.

[0038] The position and length of the first fixing member determine the suspension position of the suspension heating unit after the flexible transport bag is loaded with materials.

[0039] It should be noted that the first fixing member can be integrated with the suspension heating unit, or can be independent and connected by a connecting method.

[0040] Further, there are two possibilities when the density difference between the suspension heating unit and the transported liquid material occurs. When the density of the transported liquid is greater than the density of the suspension heating unit, the buoyancy of the suspension heating unit is greater than its gravity, and the suspension heating unit has a tendency to move upward, and then the suspension heating unit needs to be fixed by the first fixing member, and the fixing position is usually set at the bottom of the flexible transport bag. In some other cases, when the density of the transported liquid is less than the density of the suspension heating unit, the buoyancy of the suspension heating unit is less than its gravity, and the suspension heating unit has a tendency to move downward, and the fixing position is usually set at the upper part of the flexible transport bag.

[0041] In some cases, when the suspension heating unit is fixed, the fixing method can be based on the cooperation of the front and / or rear of the flexible transport bag with the upper part and / or the bottom of the flexible transport bag.

[0042] The fixing method is used to ensure the stability of the flexible transport bag in the suspended state, and to reduce the damage of the flexible transport bag caused by fluctuations.

[0043] In addition, the suspension heating unit generates heat by inputting external energy;

[0044] The energy can be one or a combination of steam heat energy, water heat energy and electric energy.

[0045] Further, the flexible transport bag is provided with an energy input port, and the energy input port is connected to the heating assembly.

[0046] In the use of steam or hydrothermal as external energy source, the heating assembly is a heat exchange pipe;

[0047] Further, the heat exchange pipe is a flexible heat exchange pipe;

[0048] Further, the heat exchange pipe is arranged in the suspension heating unit, and the heat exchange pipe is folded for increasing the heat exchange area.

[0049] The arrangement mode is directly related to the heat exchange area, and one of the following modes can be used: meander, S shape, and backfolding.

[0050] Further, the pipe is fixed by a second fixing member to prevent the movement of the pipe.

[0051] The second fixing member includes a buckle member, a limiting groove and the like to fix the heat exchange pipe, and improve the stability of the heating assembly in use.

[0052] Further, the heating assembly further includes a protective film layer, which prevents the transport liquid from entering the heating assembly and polluting the raw material of the transport liquid.

[0053] Further, the energy input port is communicated with the heat exchange pipe of the suspension heating unit.

[0054] The communication includes but is not limited to the connection by means of flanges and the like which are well known in the art. It should be noted that the energy input port is often immersed in the transport liquid, i.e. the liquid level of the transport liquid is higher than the energy input port, and therefore the connection needs to be liquid-tight and liquid-impermeable.

[0055] Further, the flexible transport bag is further provided with an energy output port, which is connected with the suspension heating unit and outputs the exchanged steam or hot water from the suspension heating unit.

[0056] Further, in some other embodiments, the flexible transport bag further includes at least two flexible energy delivery channels.

[0057] One end of the at least one flexible energy delivery channel is connected with the energy input port of the flexible transport bag, and the other end is connected with the suspension heating unit, for delivering external heat to the suspension heating unit or for protecting the energy delivery member.

[0058] The other end of the at least one flexible energy delivery channel is connected with the energy output port of the flexible transport bag, and the other end is connected with the suspension heating unit, for outputting the exchanged steam or hot water from the suspension heating unit to the outside or for protecting the energy delivery member.

[0059] In some embodiments, the heating component is an electric heating wire when using electric energy as an external energy source.

[0060] Further, the electric heating wire is distributed in the floating heating unit.

[0061] The distribution of the electric heating wire can adopt one of a meander shape, an S shape, and a zigzag shape, so as to increase the heating effect and the heat exchange area.

[0062] Preferably, the electric heating wire is distributed in the body of the floating heating unit.

[0063] Further, the electric heating wire is connected with the flexible transport bag through a wire.

[0064] In some embodiments, the wire can be protected by a conductive pipeline.

[0065] It should be noted that the conductive pipeline does not exclude the scheme of directly connecting only with the wire; and the connection mode can adopt a conventional scheme such as a flange injection, which is not essential here, and any scheme that can be considered reasonable by a person skilled in the art to be insulated and waterproof is feasible.

[0066] The conductive pipeline is connected with the flexible transport bag.

[0067] It should be noted that the conductive pipeline is mainly arranged to deliver electric energy to the protection unit of the floating heating plate, and the conductive pipeline is not specifically limited here.

[0068] Further, the electric heating wire is fixed in the body of the floating heating unit.

[0069] The fixing mode includes one or more of the aforementioned second fixing member being a buckle, a tightening belt, and a binding strip.

[0070] In some embodiments, the heating component is an electric heating plate when using electric energy as an external energy source.

[0071] The electric heating plate includes an electric heating plate made of a carbon material, or an electric heating alloy wire, a ceramic, a glass fiber, or the like.

[0072] Further, the electric heating plate is laid in the floating heating unit.

[0073] Further, the electric heating plate is located on both sides of the body of the floating heating unit.

[0074] In some other embodiments, the body of the floating heating unit is further provided with a plurality of through holes.

[0075] The through holes at least include a through hole arranged substantially in the same direction as the buoyancy direction of the body of the floating heating unit.

[0076] In the process of transportation, the liquid in the flexible bag will fluctuate to a certain extent due to inertia, generating large waves and eddies in the transportation bag, which will affect the force imbalance of the suspended heating unit, causing large amplitude motion, and in severe cases, tearing between the first fixing member of the suspended heating unit and the flexible transportation bag, thereby damaging the flexible transportation bag, and seriously reducing the strength and reliability of the flexible fixing belt. Due to the large size of the suspended heating unit, a plurality of through holes are provided on the body of the suspended heating unit, which are substantially consistent with the direction of the buoyancy of the body, which can significantly reduce the fluctuation caused by transportation and improve the stability of the suspended heating unit.

[0077] Further, in other embodiments, the through hole includes at least a through hole substantially vertically arranged with the direction of the buoyancy of the body of the suspended heating unit;

[0078] For the arrangement of the through hole, including the through hole arranged vertically with the direction of the buoyancy and the through hole arranged vertically with the direction of the buoyancy, in the process of liquid transportation, the liquid will flow in the through hole and cause the liquid to generate eddy on the body of the suspended heating unit. The generation of such eddy can significantly improve the heat exchange performance and significantly improve the heat exchange efficiency.

[0079] In another embodiment, the surface of the base material has a rough structure, and this structure is also designed to improve the heat exchange efficiency;

[0080] In use, for example, using a container for transportation, the flexible transportation bag is first laid in the container, and the valve is used to transport the liquid to be transported into the flexible transportation bag. After filling, the valve is closed, and the gas condition in the flexible transportation bag is adjusted through another valve. After filling the liquid to be transported, the heating assembly of the suspended heating unit will be suspended in the middle of the flexible transportation bag. The flexible belt is fixed to fix the suspended heating belt in the middle of the flexible transportation bag, so that the suspended heating unit is immersed in the liquid during transportation. When heating is needed, an external power supply is used to provide heat energy to the suspended heating unit. For example, using steam heat source for heating, using external steam to connect with the steam interface of the flexible transportation bag, and using flexible pipe to transport hot steam to the heating assembly in the suspended heating. For example, using electric heating as a heat source, an electric power transmission pipeline is used to transmit electric energy to the heating assembly of the heating wire or heating plate.

[0081] The flexible transport bag with the heating function provided by the present application is characterized in that the heating unit is designed in a suspension mode, the liquid transport bag is provided with the suspension heating unit, the suspension heating unit can be suspended in the liquid during the transport of the liquid, the density difference between the suspension heating unit and the transport liquid is controlled to make the buoyancy received by the suspension heating unit in the liquid not equal to the gravity of the suspension heating unit, then the first fixing member is used to fix the suspension heating unit and the flexible transport bag, and the fixing mode is the multi-point fixing, so that the suspension heating unit can be stably suspended in the liquid without rubbing against the flexible transport bag, and the flexible transport bag is prevented from being broken.

[0082] In addition, the suspension heating unit is arranged to fix the heat assembly, so that the heating mode is more stable, for example, the heat exchange pipe is arranged in the transport bag in the traditional mode, the pipe cannot be fixed, and the pipe is prone to rubbing against the flexible transport bag during the long-term use, once the flexible pipe is broken, the transport liquid is seriously polluted, the suspension unit is arranged in the present application, so that the problem can be obviously avoided, and the heat exchange efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0083] The present application will be further described in detail below in combination with the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and thus should not be regarded as a limitation on the scope of the present application. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described objects and can include exaggerated display, and the drawings are not necessarily drawn to scale.

[0084] Fig. 1 is a front planar sectional view of the flexible transport bag provided by the present application;

[0085] Fig. 2 is a force diagram of the suspension heating unit provided by the present application;

[0086] Fig. 3 is a force diagram of the rope-shaped (3a) and sheet-shaped (3b) first fixing members provided by the present application;

[0087] Fig. 4 is a structural schematic view (partially sectional view) of the flexible transport bag provided by the present application;

[0088] Fig. 5 is a schematic view of the through-hole structure of the body provided by the present application;

[0089] Fig. 6 is a schematic view of the composition of the heat exchange pipe provided by the present application;

[0090] Fig. 7 is a schematic view of the composition of the resistance wire provided by the present application (cross-sectional view);

[0091] Figure 8 is a schematic diagram of the composition of the electric heating plate (front view) provided by the embodiment of the present application; 1, flexible transport bag; 2, container; 11, suspended heating unit; 12, valve; 13, bottom; 14, side; 15, front; 16, rear; 17, upper; 18, flexible energy transport channel; 19, flange; 21, tank bottom; 22, tank wall; 111, body; 112, heating assembly; 113, energy input port; 114, energy output port; 1111, through-hole structure; 1121, heat exchange pipeline; 1122, limiting groove; 1123, electric heating wire; 1124, electric heating plate. DETAILED DESCRIPTION

[0092] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. The reagents not specifically described in the present application are conventional reagents and can be obtained from commercial channels; the methods not specifically described are conventional experimental methods and can be known from prior art.

[0093] The present application will be described in detail below with reference to Figures 1-5.

[0094] Please refer to Figure 1, which is a front view of a flexible transport bag provided by the embodiment of the present application.

[0095] Specifically, the main idea of the present application is to use the suspended heating unit 11 suspended in the interior of the flexible transport bag to heat the liquid material temporarily stored therein, thereby causing the liquid rheological property to change, avoiding the viscosity to change dramatically during the liquid transportation, and causing technical problems such as transportation difficulty, flexible transport bag damage, loading and unloading difficulty, and high energy consumption. Referring to Figure 1, it can be understood that the flexible transport bag 1 is placed in the interior of the container 2 (shown by dotted line), and after the flexible transport bag is filled with the liquid to be transported, the suspended heating unit 11 is suspended in the middle of the liquid in the flexible transport bag, and at the same time, is fixed with the flexible transport bag 1 through the first fixing member.

[0096] Among them, the use of flexible transport bag is mainly concentrated in the transportation of liquid, including food, chemical industry, petroleum raw materials, etc. For these liquids, during long-distance transportation, they will face dramatic changes in temperature, such as from south to north, from Asia to Europe or America. Due to such long-distance transportation, they will face large temperature difference changes, and thus the transported liquid will have a large rheological property change during transportation. This change is not desirable for transportation, especially during material unloading.

[0097] In order to avoid the change of liquid rheology caused by temperature change, auxiliary heating is a common solution, but the conventional auxiliary heating is not laid on the heating pad on the outer periphery of the flexible transport bag, especially on the bottom of the container 2, and the heat radiation of this way is single from the bottom to the inside heat radiation and heat exchange, and this way faces huge heat loss because the heating pad only has one side in contact with the flexible transport bag, and the contact is not gapless, and this way always has the defects of low heating efficiency and high energy consumption. The directly added heating pipe also faces similar problems, and further faces the problem that the flexible pipeline is easily compressed after the transported liquid is crystallized and solidified, and cannot work.

[0098] It is worth understanding that the suspension heating unit 11 provided by the present application is suspended in the transported liquid, and the suspension heating unit 11 achieves the suspension effect due to the balance of its own gravity, buoyancy and external traction force. Due to the arrangement of the suspension effect, the suspension heating unit 11 heats the liquid from the inside of the flexible transport bag, and the heat energy is radiated outward based on the suspension heating unit 11, and the energy exchange has almost no loss, thereby greatly improving the energy utilization rate, reducing the energy consumption, greatly improving the heating efficiency, and improving the production efficiency.

[0099] It is worth further explaining that the suspension heating unit of the present application directly contacts the liquid, has a large heat exchange area, and has almost zero heat exchange loss, so that the energy consumption is controlled to be the lowest. On the other hand, the suspension heating unit can be driven by the flow of the liquid, and will not cause damage to the flexible transport bag, and is safe and reliable during transportation. In addition, the present application can also control the temperature of the liquid according to the state of the liquid transportation, such as presetting the loading and unloading control temperature during loading and unloading, and presetting the transportation control temperature during transportation, so that the liquid has different viscosity and rheology under different states of transportation, thereby reducing the difficulty of loading or unloading the liquid into or out of the container 2, and ensuring the stability of the liquid during transportation.

[0100] For the suspension of the suspension heating unit 11, see FIG. 2, the suspension of the suspension unit is mainly based on the balance of the suspension heating unit 11 in the gravity, buoyancy and external force F to realize the fixation in the liquid. FIG. 2 shows the state when the gravity of the suspension heating unit 11 is less than the buoyancy it receives in the transported liquid, and it can be seen that when F 浮 is greater than the gravity G, the suspension heating unit 11 has a tendency to float upward, at this time, the first fixing member fixes the suspension heating unit 11 with the bottom of the flexible transport bag, and the first fixing member applies external forces F1 and F2 to the suspension heating unit 11. It should be noted that according to the form and number of the first fixing member, the applied external force may be different, at this time, the external force F is balanced with the gravity G and the buoyancy F, and the activity range of the suspension heating unit 11 is limited based on the limiting action of the first fixing member.

[0101] In some cases, when the buoyancy is less than the gravity, a first fixing member can be installed on the upper part of the flexible transport bag to achieve force balance, so as to ensure that the suspended heating unit 11 is in the transported liquid.

[0102] In some embodiments, the suspended heating unit 11 can be directly fixed to the flexible transport bag according to the design.

[0103] Further, in some cases, in order to limit the suspended heating unit 11 in the transported liquid, a plurality of first fixing members can be used for fixation.

[0104] The first fixing member can be made of polyethylene, polypropylene, or polyester material.

[0105] One end of the first fixing member is fixedly connected to the suspended heating unit 11.

[0106] The other end of the first fixing member is connected to the flexible transport bag.

[0107] The above connection scheme can be achieved by hot melting, sewing, or bonding.

[0108] The first fixing member can be in the form of a rope, a belt, or a sheet.

[0109] Further, referring to FIG. 3, the force schematic diagrams of the rope-shaped (3a) and sheet-shaped (3b) first fixing members according to the embodiments of the present application are shown.

[0110] When fixedly connected, the hot melting, sewing, and bonding methods are all feasible. For example, for a sheet, sewing is often used, and hot melting is also feasible according to the material.

[0111] Specifically, when the first fixing member is in the form of a rope, a plurality of groups of the first fixing member can be arranged at one end to provide an external force F to the suspended heating unit, so that the external force F, the gravity G, and the buoyancy F 浮 reach a balance, and the suspended heating unit is suspended in the liquid to be transported.

[0112] In some embodiments, the first fixing member is in the form of a sheet, which can also provide the external force F to the floating heating unit 11. It is worth understanding that when the first fixing member is in the form of a sheet, the external force F provided by the sheet-shaped first fixing member is more uniform, that is, the external force is uniformly applied to the connecting line of the floating heating assembly 112, which can overcome the damage caused by the uneven force on the floating heating assembly 112 due to the violent shaking of the liquid during transportation, especially the breakage. Compared with the rope-shaped first fixing member, the impact of the liquid flow on the rope-shaped first fixing member is smaller (that is, the contact area of the sheet-shaped and rope-shaped first fixing members with the liquid is different), and the rope-shaped first fixing member can ensure the stability of the floating heating plate to a certain extent. Therefore, the fixing mode can be selected according to the transportation state, such as different transportation states of trucks, trains, ships, etc., and the specifications of the floating heating plate, such as the gravity and volume of the floating plate.

[0113] In order to further illustrate the present application, please refer to the structure schematic diagram (partial cross-sectional view) of the flexible transport bag provided by the embodiment of the present application shown in FIG. 4.

[0114] Specifically, the partial cross-sectional view of FIG. 4 removes part of the bag body of the flexible transport bag, and retains the flange connected with the flexible transport bag.

[0115] The flexible transport bag is roughly divided into a bottom portion 13, a side portion 14, a front portion 15, a rear portion 16 and an upper portion 17.

[0116] Among them, as can be seen from FIG. 4, the side of the container 2 has a door; the bottom portion 13 of the flexible transport bag corresponds to and contacts the bottom 21 of the container; the side portion 14 corresponds to the wall 22 of the container; the front portion corresponds to the side of the container 2 without a door; and the rear portion 16 corresponds to the door of the container 2.

[0117] In FIG. 4, at least one valve 12 of the flexible transport bag is arranged at the rear portion 16 of the flexible transport bag, that is, corresponding to the door of the container 2. In use, the flexible transport bag is first laid flat in the container 2, and the liquid is loaded and unloaded through the valve 12 when the door is opened, which is convenient to operate.

[0118] The bottom portion 13 of the flexible transport bag corresponds to and contacts the bottom 21 of the container; and the side portion 14 corresponds to the wall 22 of the container. It should be noted that when the flexible transport bag 1 is full of transport liquid, the flexible transport bag is full, and at this time, the side portion 14 of the flexible transport bag may or may not contact the container 2 according to the specifications; but it is not excluded that the side portion has a certain degree of freedom.

[0119] It should be noted that based on the analysis of the suspension mechanics of the aforementioned floating heating unit 11, the floating heating unit and the flexible transport bag are fixed by the first fixing member; the floating heating unit is connected with at least the upper part 17 and / or the bottom part 13 of the flexible transport bag.

[0120] For other connection modes of the floating heating unit, which are not shown in FIG. 4, for example, the first fixing member can be used to connect with other parts of the flexible transport bag.

[0121] Referring to FIG. 4, the fixed mode realized by the scheme is that the floating heating unit 11 is connected with the bottom part 13 of the flexible transport bag 1, and the scheme is generally used for transporting liquid with a larger density, that is, the floating heating plate can bear a larger buoyancy.

[0122] The first fixing member in FIG. 4 is a sheet structure, which can be a woven fabric or a sheet film. For the sheet structure connection, the preferred mode is to use a continuous fixing mode, including using a continuous hot melt fixing mode and a sewing fixing mode, and in certain cases, an adhesive mode can also be used.

[0123] The selection of the sheet structure for the first fixing member is a preferred scheme. Compared with the rope structure, the sheet structure is more convenient to connect and the hot melting is more sufficient. In addition, the sheet structure can be combined with the floating heating unit more stably during transportation due to the disturbance of the liquid, thereby reducing the disturbance interference of the liquid.

[0124] Referring to FIGS. 5 and 6, the floating heating unit further includes a body 111 and a heating assembly 112.

[0125] For the body 111, it can be a sheet or a solid in actual process. For the sheet, it is more convenient to fold, store and transport when the transport bag is not filled with the transport liquid.

[0126] The body 111 has at least a through hole structure 1111, as shown in FIG. 5(c). FIG. 5(c) shows that the through hole structure 1111 and the floating heating unit body are basically consistent in the direction of the buoyancy. The floating body 111 is a plate structure, but other solid figures can also be used in the floating state. It should be noted that the through hole structure 1111 can be provided with multiple groups. During transportation, the liquid will inevitably encounter large fluctuations, especially the sudden start and stop of the truck and the wind and wave conditions of the ship transportation. Due to the huge fluctuations of the liquid, the floating heating unit will shake violently, which may cause the first fixing member to be separated from the floating heating unit, and even cause damage to the floating plate. The present application provides multiple through hole structures in the direction of the buoyancy of the floating plate. The through hole structure can pass the liquid, and in the case of violent fluctuation, it can effectively reduce the external force impact on the floating plate, ensure the long-term use of the floating heating plate, and reduce the heating use failure.

[0127] In some optional embodiments, Figure 5(d) shows that at least one set of through-hole structures 1111 in the direction perpendicular to the buoyancy direction are further included in the suspension heating plate. The through-hole structures 1111 are consistent with the vertical direction of the body buoyancy direction of the suspension heating unit, and the vertical through-hole structures 1111 and the through-hole structures in the same direction as the buoyancy can exist at the same time. In addition to the function of balancing the liquid during running, the through-hole structures can also cause turbulence to the liquid flowing through the through-hole structures, thereby improving the heat exchange performance of the liquid.

[0128] Further, the suspension heating unit generates heat through external energy input;

[0129] The energy is one or a combination of steam heat energy, water heat energy, and electric energy. The flexible transport bag is provided with an energy input port 113 connected with the suspension heating unit, and a flexible energy delivery channel 18 can be selected for energy delivery. It should be understood that the energy input port 113 and the energy output port 114 are both communicated with the flexible transport bag through the flange 19, thereby maximizing the safety and reliability of the flexible transport bag.

[0130] Referring to Figure 4, the energy input port 113 and the energy output port 114 are connected with the suspension heating unit 11. It should be noted that the connecting member can be a configuration pipeline, and the energy input port 113 and the energy output port 114 are mainly designed for steam heat energy or water heat energy.

[0131] When the energy is steam heat energy or water heat energy, the heating assembly is a heat exchange pipeline, which is generally a flexible heat exchange pipeline, and the flexible heat exchange pipeline is not specifically shown in the figure.

[0132] At the same time, the connecting member of the energy input port 113 and the energy output port 114 with the suspension heating unit 11 is also a flexible pipeline.

[0133] For this scheme, the flexible pipeline is completely immersed in the transport liquid during transportation, and the heat exchange efficiency is high during heating, which is inevitable. In addition, compared with the traditional scheme of heat melting the flexible pipeline on the inner wall or directly placing the flexible pipeline in the flexible transport bag, the existing technology will cause uneven extrusion of the flexible pipeline due to the change of the density of the transport liquid when the heating is stopped, which is very easy to cause the occlusion of the pipeline. The present application is completely immersed in the transport liquid, and the pressure will be more uniform, which can effectively avoid the occlusion of the flexible pipeline.

[0134] Further, referring to Figure 6, it shows a composition schematic diagram of the heat exchange pipeline 1121 provided in the embodiment of the present application. Further, referring to Figure 6, it shows a composition schematic diagram of the heat exchange pipeline 1121 provided in the embodiment of the present application.

[0135] Specifically, the body 111 is provided with a limiting groove 1122 adapted to the heat exchange pipe 1121, so that the heat exchange pipe 1121 is fixed to the body 111 through the buckle structure or other components on the limiting groove 1122, such as a binding strip, a tightening belt, thereby improving the stability of the heating assembly.

[0136] As can be seen from (e) of FIG. 6, the heat exchange pipe 1121 is a zigzag shape, and (f) of FIG. 6 is a spiral shape. It should be noted that the heat exchange pipe is provided in different shapes to increase the heat exchange efficiency.

[0137] Further, the heat exchange pipe is at least partially embedded in the limiting groove.

[0138] In another embodiment, when the heating assembly 112 is a resistance wire 1123, please refer to the composition schematic diagram (cross-sectional view) of the resistance wire 1123 provided by the embodiment of the present application shown in FIG. 7.

[0139] Specifically, the resistance wire 1123 is arranged inside the body 111.

[0140] When the heating assembly is an electric heating plate, please refer to the composition schematic diagram (cross-sectional view) of the electric heating plate provided by the embodiment of the present application shown in FIG. 8.

[0141] Specifically, the electric heating plate 1124 is laid in the suspension heating unit body 111; the electric heating plate is located on both sides of the suspension heating unit body 111.

[0142] In addition, the body and the outside of the heat exchange pipe are provided with a protective film layer for preventing the transport liquid from entering the heating assembly, thereby causing pollution of the to-be-transported liquid raw material.

[0143] Further, for the input mode of the electric energy as heat energy, compared with the scheme of steam heat energy and water heat energy, the energy input port and the energy output port can enter from the same opening, which can avoid opening more holes on the flexible transport bag and avoid the manufacturing cost and the risk of leakage during transportation caused by the opening.

[0144] In another embodiment, the present application also provides a preparation method of the suspension heating flexible bag, first preparing a cylindrical bag main body, then hot melting the prepared suspension heating unit in the bag main body through the first fixing member, then packaging the transport bag through the hot melting process, and installing the corresponding flange and valve assembly.

[0145] In another embodiment, the present application also provides a method for using the flexible transport bag, i.e. laying the flexible transport bag in a container, opening the valve, ensuring that the energy input port and the energy output port are closed, introducing liquid, after filling, adjusting the gas through another valve to ensure that the transport bag is full. When heating, energy is input through the energy input port, or a power source is combined to heat.

[0146] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present application should be covered by the claims of the present application.

Claims

1. A flexible transport bag with heating function for transporting liquids on trucks, ships, and trains, the flexible transport bag having a suspension heating unit; the suspension heating unit is placed inside the flexible transport bag, and during use, the suspension heating unit can be suspended in the liquid to be transported, and the liquid state change caused by temperature changes can be controlled by the suspension heating unit.

2. The flexible transport bag as described in claim 1, characterized in that, The flexible transport bag includes at least one valve, wherein at least one valve is used for loading and unloading the transport liquid; The flexible transport bag, once filled with the transport liquid, is roughly divided into a bottom, sides, front, rear, and top. The bottom part corresponds to and contacts the bottom of the container, the side part corresponds to the container wall, the front part corresponds to the side of the container without doors, and the rear part corresponds to the container door. The at least one valve is located at the rear of the flexible transport bag.

3. The flexible transport bag as described in claim 2, characterized in that, The suspended heating unit and the flexible transport bag are connected and fixed by the first fixing member; The suspended heating unit is connected at least to the upper part and / or bottom of the flexible transport bag, and in use, the suspended heating unit is in the transport liquid; The first fastener is one or a combination of a strip-shaped, sheet-shaped, and rope-shaped structure; The connection method is that the first fastener is fixed by single-point heat fusion, multi-point heat fusion, sewing, or adhesive. The first fastener is elastic.

4. The flexible transport bag as described in claim 3, characterized in that, The suspended heating unit can also be connected to the side, front, or rear of the flexible transport bag.

5. The flexible transport bag as described in claim 3, characterized in that, The suspended heating unit includes a body and a heating element; the heating element is disposed on the body of the suspended heating unit; the body has a sheet-like structure. The heating element is one or a combination of heat exchange pipes, resistance wires, and electric heating plates; The body is made of one or more materials selected from polyethylene, polypropylene, polyurethane, and polyester.

6. The flexible transport bag as described in claim 5, characterized in that, The aforementioned suspension heating unit utilizes an external energy input and exchanges energy with the transport liquid; The external energy source is one or a combination of steam thermal energy, liquid thermal energy, and electrical energy.

7. The flexible transport bag as described in claim 6, characterized in that, The energy source is steam thermal energy or liquid thermal energy, wherein the heating component is a heat exchange pipe; and the heat exchange pipe is a flexible pipe. The heat exchange pipes are arranged and distributed on the body of the suspended heating unit; The heat exchange pipes are distributed in a U-shape, S-shape, or bend shape on the suspended heating body to increase the heat exchange area; The heat exchange pipe is fixed to the suspended heating unit body by a second fastener to prevent the pipe from moving. The second fastener includes one or more of the following: a buckle, a tensioning strap, and a tie strip; Alternatively, the heat exchange pipe is fixed to the suspended heating unit body via a fixing structure on the suspended heating unit body; The fixing structure includes one or more of a fixing groove and a fixing ring, which improves the stability of the heating component.

8. The flexible transport bag as described in claim 7, characterized in that, The flexible transport bag also includes at least two flexible energy delivery channels; The flexible transport bag also includes an energy input port and an energy output port; At least one flexible energy delivery channel is connected at one end to the heating element and at the other end to the energy input port of the flexible transport bag, so as to deliver external energy to the heating element of the suspended heating unit through the flexible energy delivery channel; At least one other flexible energy delivery channel is connected at one end to the heating element and at the other end to the energy output port of the flexible transport bag, so as to output the energy medium after heat exchange from the suspended heating unit.

9. The flexible transport bag as described in claim 6, characterized in that, The heating element is a heating wire; The heating wire is fixed to the suspended heating unit body by a second fixing member to prevent the pipe from moving; The second fastener includes one or more of the following: a buckle, a tensioning strap, and a tie strip; Alternatively, the heating wire is fixed to the suspended heating unit body via a fixing structure on the suspended heating unit body; The fixing structure includes one or more of a fixing groove and a fixing ring, which improves the stability of the heating component; Alternatively, the heating wire may be embedded in the body of the suspended heating unit; The heating wires are distributed on the body of the suspension heating unit; The heating wires are distributed in a U-shape, S-shape, or zigzag shape on the body of the suspended heating unit to increase the heat exchange area; The heating wire is connected to the flexible transport bag via a wire, and an external energy source is supplied to the heating wire via the wire.

10. The flexible transport bag as described in claim 6, characterized in that, The heating element is an electric heating plate; The heating plate is fixed to the main body of the suspended heating unit; The heating plate is located on one or both sides of the suspended heating unit body.

11. The flexible transport bag according to any one of claims 1-10, characterized in that, The suspended heating unit body is also provided with multiple through holes.

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