Safe rewarming device for inner cylinder of storage tank

Abstract

The utility model discloses a safe rewarming device for an inner cylinder of a storage tank, which comprises a vortex tube, the vortex tube comprises a vortex tube body, a vortex chamber is arranged in the vortex tube body, a compressed air inlet is arranged on the vortex tube body, a hot air side and a cold air side are respectively arranged on two sides of the vortex tube body, and a hot air outlet is arranged at the end of the hot air side. A cold air outlet is formed in the end of the cold air side, an insertion section used for being inserted into a connector of a storage tank is arranged on the vortex tube body, and the hot air side is arranged on the insertion section. When compressed air enters the vortex chamber from the compressed air inlet, hot airflow flows to the hot air side and is discharged from the hot air outlet, and cold airflow flows to the cold air side and is discharged from the cold air outlet; the insertion section of the vortex tube can be inserted into the connector of the storage tank and extend into the storage tank inner cylinder to discharge hot air, so that the storage tank inner cylinder can be heated. Hot air is generated after compressed air is introduced into the vortex tube, electricity is not needed in the heating process, the electricity utilization safety risk is reduced, the compressed air is easy to obtain and convenient to use, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of storage tank treatment, in particular to a storage tank inner cylinder safety rewarming device. Background Art

[0002] Cryogenic liquid storage tanks contain cryogenic liquid. Usually, when repairing cryogenic liquid storage tanks, the inner cylinder of the storage tank needs to be reheated first. At present, when reheating the storage tank, electric heating or high-temperature steam is generally used to heat the compressed air, and then the inner cylinder and internal piping of the cryogenic liquid storage tank are heated through the liquid inlet, so that the inner cylinder quickly returns to normal temperature and enters the maintenance state.

[0003] However, electric heating requires electricity, which poses certain risks to storage tanks storing liquid propane or liquid oxygen media, so isolation measures are needed. The equipment cost is high and the safety risk during operation is relatively high, which is not conducive to rapid deployment. Although high-temperature steam does not have the safety risk of electricity use, it requires a steam source, and its small-scale production on site is inconvenient and the cost is relatively high. Utility Model Content

[0004] The main purpose of the utility model is to provide a safe rewarming device for the inner cylinder of a storage tank, aiming to solve the technical problems that the rewarming method in the prior art has certain safety risks, is inconvenient to use and has high cost.

[0005] To achieve the above-mentioned purpose, the utility model proposes a safe rewarming device for the inner cylinder of a storage tank, comprising a vortex tube, the vortex tube comprising a vortex tube body, the interior of the vortex tube body is provided with a vortex chamber for hot and cold diversion, the vortex tube body is provided with a compressed air inlet for compressed air to enter, the two sides of the vortex tube body are respectively provided with a hot air side and a cold air side, the end of the hot air side is provided with a hot air outlet for discharging hot air, the end of the cold air side is provided with a cold air outlet for discharging cold air, the vortex tube body is provided with an insertion section for inserting into the interface of the storage tank, and the hot air side is arranged on the insertion section.

[0006] When compressed air enters the vortex chamber from the compressed air inlet, the airflow forms hot air flow and cold air flow in the vortex chamber. The hot air flow flows to the hot air side and is discharged from the hot air outlet, and the cold air flow flows to the cold air side and is discharged from the cold air outlet. The insertion section of the vortex tube can be inserted into the interface of the storage tank and extend into the inner cylinder of the storage tank and discharge hot air, so that the inner cylinder of the storage tank can be heated. The utility model generates hot air after compressed air is passed into the vortex tube. The heating process does not require electricity, reducing the safety risk of electricity use. In addition, compressed air is easy to obtain and can be used conveniently, reducing the cost of use.

[0007] Preferably, the outer side of the vortex tube body is fixedly connected with a tank connector for matching with the interface of the tank, and the insertion section protrudes from the tank connector. The tank connector can be connected with the interface of the tank, so that it is convenient to insert the tank and fix it with the tank.

[0008] Preferably, the storage tank inner cylinder safety reheating device further comprises a temperature sensor, which is arranged on the hot gas side and is used to detect the temperature of the hot gas side. The temperature sensor can detect the temperature of the hot gas on the hot gas side, which is convenient for monitoring the heating temperature.

[0009] Preferably, the temperature sensor includes a temperature probe, a wire and a temperature detector, the temperature probe and the temperature detector are electrically connected via the wire, the temperature probe is arranged beside the hot air outlet, and the temperature detector is arranged on the cold air side.

[0010] The temperature probe of the temperature sensor is arranged beside the hot air outlet and extends into the storage tank, and the temperature detector does not extend into the storage tank on the cold air side, thereby simplifying the structure of the temperature sensor on the hot air side.

[0011] Preferably, a receiving groove is provided on the outer side of the vortex tube body, the receiving groove extends along the axial direction of the vortex tube body, and the wire is fixed in the receiving groove.

[0012] The wire is on the outside of the vortex tube body and does not affect the airflow inside the vortex tube; the wire can be stored in the receiving groove and does not hang outside the insertion section to affect insertion or extraction.

[0013] Preferably, the storage tank inner cylinder safety rewarming device also includes a temperature controller and an air compressor, the air compressor is connected to the compressed air inlet, the temperature detector is electrically connected to the temperature controller, and the temperature controller is signal-connected to the air compressor.

[0014] The temperature and flow of hot air are affected by the flow or speed of compressed air. The temperature controller can control the movement of the air compressor according to the temperature of the hot air and change the flow or speed of the compressed air delivered, thereby achieving the effect of automatically adjusting the heating temperature.

[0015] Preferably, the storage tank inner cylinder safety rewarming device further comprises a main air inlet pipe, an air outlet pipe, a branch pipe and a switching valve;

[0016] The switching valve is provided with a first air inlet, a first air outlet and a second air outlet, and a valve core is provided inside the switching valve, and the valve core can perform switching movement to make the first air inlet communicate with the first air outlet or make the first air inlet communicate with the second air outlet;

[0017] A main air inlet is provided at one end of the main air inlet pipe, the other end of the main air inlet pipe is connected to the first air inlet, the first air outlet is connected to the compressed air inlet, one end of the air outlet pipe is connected to the cold air outlet, a main air outlet is provided at the other end of the air outlet pipe, a branch air outlet is also provided on the air outlet pipe, one end of the branch pipe is connected to the second air outlet, and the other end of the branch pipe is connected to the branch air outlet.

[0018] Since the cold air outlet will discharge cold air during the heating process, the temperature at the cold air outlet is relatively low, so the moisture in the compressed air or the moisture in the air may condense at the cold air outlet. After a period of use, ice blocks the cold air outlet and prevents it from being discharged normally, affecting the operation of the vortex tube. To solve this problem, in this solution, compressed air enters the main air inlet pipe from the main air inlet, and the airflow enters the switching valve from the first air inlet. The valve core can switch positions. During normal operation, the first air inlet is connected to the first air outlet, and compressed air can enter the vortex tube to generate hot air to heat the storage tank, and cold air enters the air outlet pipe and is discharged from the main air outlet; when ice blocks are formed on the main air outlet, the position of the valve core is switched to connect the first air inlet with the second air outlet, and compressed air enters the branch pipe and is blown out from the main air outlet, which can increase the temperature of the main air outlet area and eliminate ice. Using compressed air to eliminate ice is safe and easy to operate.

[0019] Preferably, the switching valve is a mechanical temperature control valve, and a thermosensitive telescopic element and a valve core are provided on the inner side of the mechanical temperature control valve. One side of the thermosensitive telescopic element is connected to the housing of the switching valve, and the other side of the thermosensitive telescopic element is connected to the valve core. The thermosensitive telescopic element can extend or shorten according to changes in temperature to drive the valve core to switch.

[0020] The thermosensitive telescopic element can extend or shorten according to the temperature, thereby driving the valve core to switch. When ice blocks the discharge of cold air, the cold air will enter the branch pipe and enter the switching valve. The thermosensitive telescopic element senses the temperature drop and deforms to drive the valve core to move, thereby switching the first air inlet to the second air outlet for connection, automatically allowing compressed air to enter the branch pipe for de-icing. Mechanical control is used and no electrical control is required, reducing the risk of electricity use.

[0021] Preferably, the switching valve is a manual switching valve. The switching valve can be a manual switching valve, and the operator manually switches the de-icing after observing the formation of ice cubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure when the insertion section of the utility model is inserted into and connected to a storage tank;

[0025] Figure 3 This is a schematic diagram of airflow during normal heating operation of the first embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the airflow after ice cubes are formed at the main air outlet during operation in the first embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of airflow during deicing in Embodiment 1 of the utility model;

[0028] Figure 6 This is a schematic diagram of the airflow during normal heating operation of the second embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram of airflow during deicing in the second embodiment of the utility model.

[0030] In the accompanying drawings: 1-vortex tube, 11-hot air side, 12-cold air side, 13-compressed air inlet, 14-hot air outlet, 15-cold air outlet, 16-insertion section, 17-receiving groove, 2-storage tank joint, 31-temperature probe, 32-wire, 33-temperature detector, 34-temperature controller, 4-air compressor, 5-main air inlet pipe, 51-main air inlet, 6-air outlet pipe, 61-main air outlet, 62-branch air outlet, 63-ice cube, 7-branch pipe, 8-switching valve, 81-first air inlet, 82-first air outlet, 83-second air outlet, 84-valve core, 9-storage tank.

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] It should be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of technical personnel in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] like Figures 1 to 7 As shown, a storage tank inner cylinder safety rewarming device comprises a vortex tube 1, the vortex tube 1 comprises a vortex tube body, the interior of the vortex tube body is provided with a vortex chamber for hot and cold diversion, the vortex tube body is provided with a compressed air inlet 13 for compressed air to enter, the two sides of the vortex tube body are respectively provided with a hot air side 11 and a cold air side 12, the end of the hot air side 11 is provided with a hot air outlet 14 for discharging hot air, the end of the cold air side 12 is provided with a cold air outlet 15 for discharging cold air, the vortex tube body is provided with an insertion section 16 for inserting the interface of the storage tank 9, and the hot air side 11 is arranged on the insertion section 16.

[0036] When compressed air enters the vortex chamber from the compressed air inlet 13, the airflow forms a hot air flow and a cold air flow in the vortex chamber. The hot air flow flows to the hot air side 11 and is discharged from the hot air outlet 14, and the cold air flow flows to the cold air side 12 and is discharged from the cold air outlet 15. The insertion section 16 of the vortex tube 1 can be inserted into the interface of the storage tank 9 and extend into the inner cylinder of the storage tank 9 and discharge hot air, so that the inner cylinder of the storage tank 9 can be heated. The principle of hot and cold flow separation of the vortex tube 1 is as follows: after the compressed air enters the vortex chamber of the vortex tube 1, the airflow rotates at a speed of up to one million revolutions per minute and flows to the hot air outlet 14 of the vortex tube 1. A part of the airflow flows out through the control valve inside the vortex tube 1. After the remaining gas is blocked, it rotates in the opposite direction at the same speed in the inner circle of the original airflow and flows to the cold air outlet 15 of the vortex tube 1; in this process, the two airflows undergo heat exchange, the inner ring airflow becomes very cold and flows out from the cold air outlet 15 of the vortex tube 1, and the outer ring airflow becomes very hot and flows out from the hot air outlet 14 of the vortex tube 1. The specific internal structure of the vortex tube 1 is prior art and will not be described in detail here. The utility model generates hot air after compressed air is passed into the vortex tube 1. No electricity is required during the heating process, which reduces the safety risk of electricity use. In addition, compressed air is easy to obtain and can be used conveniently, reducing the cost of use.

[0037] In some specific embodiments, referring to Figure 2 The outer side of the vortex tube body is fixedly connected with a tank connector 2 for matching with the interface of the tank 9, and the insertion section 16 protrudes from the tank connector 2. The tank connector 2 matches the interface structure of the tank 9, and when the insertion section 16 is inserted into the tank 9, it can be connected with the interface of the tank 9 through the tank connector 2, so that it is convenient to insert the tank 9 and fix it with the tank 9.

[0038] In some specific embodiments, the storage tank inner barrel safety reheating device further includes a temperature sensor, which is disposed on the hot gas side 11 and is used to detect the temperature of the hot gas side 11. The temperature sensor can detect the temperature of the hot gas on the hot gas side 11, which facilitates monitoring of the heating temperature.

[0039] Furthermore, the temperature sensor includes a temperature probe 31 , a wire 32 and a temperature detector 33 . The temperature probe 31 and the temperature detector 33 are electrically connected via the wire 32 . The temperature probe 31 is disposed beside the hot air outlet 14 , and the temperature detector 33 is disposed on the cold air side 12 .

[0040] The temperature probe 31 generates resistance or voltage changes under temperature changes, and the temperature detector 33 detects the resistance or voltage changes generated by the temperature probe 31 to form an electrical signal. The temperature probe 31 of the temperature sensor is arranged beside the hot gas outlet 14 and extends into the storage tank 9. The temperature detector 33 does not extend into the storage tank 9 on the cold gas side 12, which simplifies the structure of the temperature sensor on the hot gas side 11. The storage tank joint 2 is between the temperature probe 31 and the temperature detector 33.

[0041] Furthermore, a receiving groove 17 is provided on the outer side of the vortex tube body. The receiving groove 17 extends along the axial direction of the vortex tube body, and the wire 32 is fixed in the receiving groove 17 .

[0042] The wire 32 is outside the vortex tube body and does not affect the airflow inside the vortex tube 1; the wire 32 can be received in the receiving groove 17 and does not hang outside the insertion section 16 to affect insertion or extraction. When the tank joint 2 is set, the wire 32 passes between the vortex tube body and the tank joint 2.

[0043] Furthermore, the storage tank inner cylinder safety rewarming device also includes a temperature controller 34 and an air compressor 4, the air compressor 4 is connected to the compressed air inlet 13, the temperature detector 33 is electrically connected to the temperature controller 34, and the temperature controller 34 is signal-connected to the air compressor 4.

[0044] The temperature and flow rate of the hot air are affected by the flow rate or speed of the compressed air. The temperature controller 34 can control the movement of the air compressor 4 according to the temperature of the hot air to change the flow rate or speed of the compressed air delivered, thereby achieving the effect of automatically adjusting the heating temperature.

[0045] In some specific embodiments, the storage tank inner cylinder safety rewarming device further includes a main air inlet pipe 5, an air outlet pipe 6, a branch pipe 7 and a switching valve 8;

[0046] The switching valve 8 is provided with a first air inlet 81, a first air outlet 82 and a second air outlet 83. A valve core 84 is provided inside the switching valve 8. The valve core 84 can perform switching movement to make the first air inlet 81 communicate with the first air outlet 82 or make the first air inlet 81 communicate with the second air outlet 83.

[0047] A total air inlet 51 is provided at one end of the total air inlet pipe 5, the other end of the total air inlet pipe 5 is connected to the first air inlet 81, the first air outlet 82 is connected to the compressed air inlet 13, one end of the air outlet pipe 6 is connected to the cold air outlet 15, the other end of the air outlet pipe 6 is provided with a total air outlet 61, the air outlet pipe 6 is also provided with a branch air outlet 62, one end of the branch pipe 7 is connected to the second air outlet 83, and the other end of the branch pipe 7 is connected to the branch air outlet 62.

[0048] Since the cold air outlet 15 discharges cold air during the heating process, the temperature at the cold air outlet 15 is relatively low, so the moisture in the compressed air or the moisture in the air may condense at the cold air outlet 15. Figure 4 After a period of use, ice blocks 63 are formed to block the cold air outlet 15 and prevent it from being discharged normally, thus affecting the operation of the vortex tube 1.

[0049] To solve this problem, in this solution, compressed air enters the main air inlet pipe 5 from the main air inlet 51, and the air flow enters the switching valve 8 from the first air inlet 81. The valve core 84 can switch positions. In normal operation, refer to Figure 3 and Figure 6 The first air inlet 81 is connected to the first air outlet 82, and the compressed air can enter the vortex tube 1 to generate hot air to heat the storage tank 9, and the cold air enters the outlet pipe 6 and is discharged from the main air outlet 61; when the main air outlet 61 is blocked by ice 63, refer to Figure 4 , the position of the switching valve 8 core makes the first air inlet 81 communicate with the second air outlet 83, refer to Figure 5 and Figure 7 The compressed air enters the branch pipe 7 and is blown out from the main air outlet 61, which can increase the temperature of the area of ​​the main air outlet 61 and eliminate the ice 63. Using compressed air to eliminate the ice 63 is safe and easy to operate. After the ice 63 is eliminated, the valve 8 core is switched to connect the first air inlet 81 with the first air outlet 82, and then the storage tank 9 is continued to reheat.

[0050] The switching valve 8 may adopt the following embodiment 1 or embodiment 2, or other switching valves 8 with a switching function.

[0051] Embodiment 1:

[0052] Reference Figures 1 to 5 The switching valve 8 is a mechanical temperature control valve. A thermosensitive telescopic element and a valve core are arranged on the inner side of the mechanical temperature control valve. One side of the thermosensitive telescopic element is connected to the shell of the switching valve 8, and the other side of the thermosensitive telescopic element is connected to the valve core. The thermosensitive telescopic element can extend or shorten according to the change of temperature to drive the valve core to switch.

[0053] The thermosensitive telescopic element can be extended or shortened according to the temperature, thereby driving the valve core to switch. When ice 63 blocks the discharge of cold air, the cold air will enter the branch pipe 7 and enter the switching valve 8. The thermosensitive telescopic element senses the temperature drop and deforms to drive the valve core to move, thereby switching to the first air inlet 81 and connecting with the second air outlet 83, automatically realizing the compressed air entering the branch pipe 7 for de-icing, and adopting mechanical control without electrical control, reducing the risk of electricity consumption. The structure and principle of the mechanical temperature control valve with a thermosensitive telescopic element are prior art and will not be described in detail here.

[0054] Embodiment 2:

[0055] Reference Figure 6 and Figure 7 The switching valve 8 is a manual switching valve. The manual switching valve can manually switch the position of the valve core 84, which can be a three-way ball valve. When the operator observes the formation of ice 63, the operator can manually rotate the valve core 84 through the handle to switch the de-icing.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A safe reheating device for the inner cylinder of a storage tank, characterized in that: The vortex tube (1) comprises a vortex tube body, a vortex chamber for hot and cold flow separation is arranged inside the vortex tube body, a compressed air inlet (13) for compressed air to enter is arranged on the vortex tube body, a hot air side (11) and a cold air side (12) are arranged on both sides of the vortex tube body, a hot air outlet (14) for discharging hot air is arranged at the end of the hot air side (11), a cold air outlet (15) for discharging cold air is arranged at the end of the cold air side (12), an insertion section (16) for inserting an interface of a storage tank (9) is arranged on the vortex tube body, and the hot air side (11) is arranged on the insertion section (16).

2. The tank inner cylinder safety reheating device according to claim 1, characterized in that: A tank connector (2) for matching and connecting with the interface of a tank (9) is fixedly connected to the outer side of the vortex tube body, and the insertion section (16) protrudes from the tank connector (2).

3. The tank inner cylinder safety reheating device according to claim 1, characterized in that: The storage tank inner cylinder safety rewarming device further comprises a temperature sensor, which is arranged on the hot gas side (11) and is used to detect the temperature of the hot gas side (11).

4. The tank inner cylinder safety reheating device according to claim 3, characterized in that: The temperature sensor comprises a temperature probe (31), a wire (32) and a temperature detector (33); the temperature probe (31) and the temperature detector (33) are electrically connected via the wire (32); the temperature probe (31) is arranged on the side of the hot air outlet (14), and the temperature detector (33) is arranged on the cold air side (12).

5. The tank inner cylinder safety reheating device according to claim 4, characterized in that: A receiving groove (17) is provided on the outer side of the vortex tube body. The receiving groove (17) extends along the axial direction of the vortex tube body. The wire (32) is fixed in the receiving groove (17).

6. The tank inner cylinder safety reheating device according to claim 4, characterized in that: The storage tank inner cylinder safety rewarming device also includes a temperature controller (34) and an air compressor (4), wherein the air compressor (4) is connected to the compressed air inlet (13), the temperature detector (33) is electrically connected to the temperature controller (34), and the temperature controller (34) is signal-connected to the air compressor (4).

7. The tank inner cylinder safety reheating device according to claim 1, characterized in that: The storage tank inner cylinder safety rewarming device also includes a main air inlet pipe (5), an air outlet pipe (6), a branch pipe (7) and a switching valve (8); The switching valve (8) is provided with a first air inlet (81), a first air outlet (82) and a second air outlet (83); a valve core (84) is provided on the inner side of the switching valve (8); the valve core (84) is capable of switching so that the first air inlet (81) is connected to the first air outlet (82) or the first air inlet (81) is connected to the second air outlet (83); A total air inlet (51) is provided at one end of the total air inlet pipe (5), the other end of the total air inlet pipe (5) is connected to the first air inlet (81), the first air outlet (82) is connected to the compressed air inlet (13), one end of the air outlet pipe (6) is connected to the cold air outlet (15), the other end of the air outlet pipe (6) is provided with a total air outlet (61), the air outlet pipe (6) is also provided with a branch air outlet (62), one end of the branch pipe (7) is connected to the second air outlet (83), and the other end of the branch pipe (7) is connected to the branch air outlet (62).

8. The tank inner cylinder safety reheating device according to claim 7, characterized in that: The switching valve (8) is a mechanical temperature control valve, and a thermosensitive telescopic element is provided on the inner side of the mechanical temperature control valve. One side of the thermosensitive telescopic element is connected to the housing of the switching valve (8), and the other side of the thermosensitive telescopic element is connected to the valve core (84). The thermosensitive telescopic element can extend or shorten according to changes in temperature to drive the valve core (84) to switch.

9. The tank inner cylinder safety reheating device according to claim 7, characterized in that: The switching valve (8) is a manual switching valve.

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