LNG full-capacity tank temperature field monitoring system under normal operation condition

Abstract

The utility model provides an LNG (Liquefied Natural Gas) full-capacity tank temperature field monitoring system under a normal operation condition, which comprises a temperature monitoring mechanism arranged in a tank body and used for monitoring the temperature in the tank; the adjusting mechanism is arranged in the tank body to adjust the height of the temperature monitoring mechanism in the tank body; and the regulation and control mechanism is arranged on the outer wall of the tank body to regulate the temperature in the tank body. According to the utility model, the temperature monitoring mechanism is arranged in the tank body to monitor the temperature of the LNG at different positions in the tank body, and the adjusting mechanism is used for adjusting the position of the temperature monitoring mechanism in the tank body, so that the temperature monitoring mechanism can monitor the temperature at different positions in the tank body; the hole adjusting mechanism is installed on the outer wall of the tank body to adjust the temperature in the tank body so that the temperature can meet the LNG storage temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature monitoring, and in particular to a temperature field monitoring system for a full-containment LNG tank under normal operating conditions. Background Art

[0002] LNG full-containment tanks are usually large containers for storing liquefied natural gas. Since LNG needs to be kept at extremely low temperatures to maintain its liquid state, the temperature distribution inside the full-containment tank is crucial for storing and transporting LNG. Under normal operating conditions, it is necessary to monitor the temperature field of the LNG (liquefied natural gas) full-containment tank to obtain the temperature distribution inside the LNG full-containment tank. A Chinese patent (publication number CN 215757301U) discloses an online monitoring device for a fully automatic fermentation tank, which can detect the internal temperature of the fermentation tank body through a temperature sensor. However, it cannot change its position according to the LNG liquid level stored in the tank and cannot make adaptive adjustments. Therefore, the utility model proposes a temperature field monitoring system for an LNG full-containment tank under normal operating conditions to improve the above problems. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the temperature field monitoring system of the LNG full-containment tank under normal operating conditions cannot adaptively adjust the LNG liquid level stored in the tank, thereby providing a temperature field monitoring system of the LNG full-containment tank under normal operating conditions.

[0004] In order to solve the above problems, the utility model provides a temperature field monitoring system for a full-containment LNG tank under normal operating conditions, which is arranged in the tank body, a liquid discharge pipe is arranged at the bottom of the tank body, and a liquid inlet pipe is arranged at the top of the tank body, including:

[0005] A temperature monitoring mechanism is arranged inside the tank to monitor the temperature inside the tank;

[0006] An adjusting mechanism, disposed in the tank body to adjust the height of the temperature monitoring mechanism in the tank body;

[0007] The regulating mechanism is arranged on the outer wall of the tank body to regulate the temperature inside the tank body.

[0008] Preferably, the temperature monitoring mechanism includes a first positioning ring and a second positioning ring, the first positioning ring and the second positioning ring are both arranged in the tank body with the center of the tank body as the center, and the first positioning ring is located in the second positioning ring, and a plurality of positioning plates are evenly arranged between the first positioning ring and the second positioning ring, and the two ends of the positioning plates are respectively connected to the outer side of the first positioning ring and the inner side of the second positioning ring, and a plurality of temperature sensors are arranged on the surface of the positioning plates to obtain the temperature of different positions in the tank body.

[0009] Preferably, the adjustment mechanism includes: a guide rod, at least two of which are evenly arranged with the center of the tank body as the center, the two ends of the guide rod are respectively connected to the bottom and the top of the tank body, the outer side of the second positioning ring is slidably connected to the inner wall of the tank body, the second positioning ring is respectively provided with sliding grooves adapted to the guide rod, and the second positioning ring is slidably connected to the guide rod through the sliding grooves.

[0010] Preferably, a pair of fixing plates are further provided between the first positioning ring and the second positioning ring, the two ends of the pair of fixing plates are respectively connected to the inner side of the first positioning ring and the outer side of the second positioning ring, and the pair of fixing plates are on the same straight line;

[0011] A first through hole and a second through hole are provided in the middle of the fixing plate, a screw and a guide rod are provided in the first through hole and the second through hole respectively, the screw is threadedly connected to the first through hole, the guide rod and the second through hole are slidably connected, two ends of the guide rod are respectively connected to the bottom of the tank body and the top of the tank body, one end of the screw is rotatably connected to the bottom of the tank body, and the other end of the screw rotatably passes through the top of the tank body, a mounting plate is provided outside the top of the tank body, a motor is provided on the mounting plate, and an output shaft of the motor rotatably passes through the mounting plate to connect the screw.

[0012] Preferably, the regulating mechanism includes: a jacket, which is arranged outside the tank body, forming a cavity between the jacket and the outer wall of the tank body, a first connecting pipe is arranged at the top of the jacket, and a second connecting pipe is arranged at the bottom of the jacket, and stop valves are arranged on the first connecting pipe and the second connecting pipe.

[0013] Preferably, a manhole and an observation hole are respectively provided on the top of the tank body, and a manhole cover and an observation hole cover are respectively provided on the manhole and the observation hole.

[0014] The utility model provides a LNG full-containment tank temperature field monitoring system under normal operating conditions, which has the following beneficial effects:

[0015] 1. The utility model is installed in the tank body through the temperature monitoring mechanism to monitor the temperature of LNG at different positions in the tank body, wherein the adjustment mechanism is used to adjust the position of the temperature monitoring mechanism in the tank body, so that the temperature monitoring mechanism can monitor the temperature at different positions in the tank body, and the hole adjustment mechanism is installed on the outer wall of the tank body to adjust the temperature in the tank body so that it meets the storage temperature of LNG;

[0016] 2. The utility model also arranges a plurality of temperature sensors along the radial direction of the tank body, so as to measure the temperature of LNG at different positions relative to the radial direction of the tank body;

[0017] 3. The utility model also evenly arranges at least two guide rods with the center of the tank body as the center, the guide rods are connected to the side wall of the tank body, a sliding groove adapted to the guide rod is arranged on the second positioning ring, and the second positioning ring is slidably connected to the guide rod through the sliding groove, so that the position of the temperature monitoring mechanism can be adjusted according to the liquid level of the LNG, thereby obtaining the temperature of the LNG at different positions in the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of the utility model;

[0019] Figure 2 This is a front view structural schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation of the first positioning ring structure of the utility model.

[0021] The reference numerals are as follows:

[0022] 1. Tank body; 2. First positioning ring; 3. Second positioning ring; 4. Positioning plate; 5. Temperature sensor; 6. Guide rod; 7. Sliding groove; 8. Fixing plate; 9. First through hole; 10. Second through hole; 11. Screw rod; 12. Guide rod; 13. Mounting plate; 14. Motor; 15. Jacket; 16. First connecting pipe; 17. Second connecting pipe; 18. Manhole; 19. Observation hole. DETAILED DESCRIPTION

[0023] like Figure 1-3 As shown, the utility model provides a LNG full-containment tank temperature field monitoring system under normal operating conditions, which is arranged in a tank body 1, a liquid discharge pipe is arranged at the bottom of the tank body 1, and a liquid inlet pipe is arranged at the top of the tank body 1, including:

[0024] A temperature monitoring mechanism is arranged in the tank body 1 to monitor the temperature inside the tank;

[0025] An adjusting mechanism, disposed in the tank body 1 to adjust the height of the temperature monitoring mechanism in the tank body 1;

[0026] The regulating mechanism is arranged on the outer wall of the tank body 1 to regulate the temperature inside the tank body 1. Figure 1-3As shown, a temperature field monitoring system for a LNG full-containment tank under normal operating conditions is installed in a tank body 1, a liquid discharge pipe is provided at the bottom of the tank body 1, and a liquid inlet pipe is provided at the top of the tank body 1, LNG is stored in the tank body 1 through the liquid inlet pipe, and LNG is discharged from the tank body 1 through the liquid discharge pipe, wherein both the liquid inlet pipe and the liquid discharge pipe are provided with valves to control the flow of LNG liquid, when the tank body 1 is in normal operating conditions, the liquid level in the tank is monitored by the LNG full-containment tank temperature field monitoring system, which includes a temperature monitoring mechanism, an adjusting mechanism and a regulating mechanism, wherein the temperature monitoring mechanism is installed in the tank body 1 to monitor the temperature of LNG at different positions in the tank body 1, wherein the adjusting mechanism is used to adjust the position of the temperature monitoring mechanism in the tank body 1, so that the temperature monitoring mechanism can monitor the temperature at different positions in the tank body 1; wherein the hole adjusting mechanism is installed on the outer wall of the tank body 1 to adjust the temperature in the tank body 1 so that it meets the storage temperature of LNG.

[0027] In some embodiments, the temperature monitoring mechanism includes a first positioning ring 2 and a second positioning ring 3, the first positioning ring 2 and the second positioning ring 3 are both arranged in the tank body 1 with the center of the tank body 1 as the center, and the first positioning ring 2 is located in the second positioning ring 3, and a plurality of positioning plates 4 are evenly arranged between the first positioning ring 2 and the second positioning ring 3, and the two ends of the positioning plates 4 are respectively connected to the outer side of the first positioning ring 2 and the inner side of the second positioning ring 3, and a plurality of temperature sensors 5 are arranged on the surface of the positioning plates 4 to obtain the temperature of different positions in the tank body 1. Figure 1-3 As shown, the first positioning ring 2 and the second positioning ring 3 of the temperature monitoring mechanism are connected by a positioning plate 4, and the connection method can be welding or bolt connection. A plurality of temperature sensors 5 are evenly arranged on the surface of the positioning plate 4, so that a plurality of temperature sensors 5 are arranged along the radial direction of the tank body 1, and the temperature of LNG at different positions relative to the radial direction of the tank body 1 can be measured, wherein the temperature sensor 5 is commercially available, and the temperature sensing signal acquired by the temperature sensor 5 is transmitted to the processor arranged in the interlayer in the first positioning ring 2 through a wire, and converted into digital information, and transmitted to the computer outside the tank body 1 through the signal transceiver arranged in the interlayer for further information processing, so as to obtain the temperature of the tank body 1 at different positions in the tank body 1, wherein the processor and the signal transceiver are both devices for processing and forwarding the sensing signal, and are commercially available, wherein the positions of the interlayer for passing the wire are all sealed.

[0028] In some embodiments, the adjustment mechanism includes: a guide rod 6, at least two guide rods 6 are evenly arranged around the center of the tank body 1, the two ends of the guide rod 6 are respectively connected to the bottom and the top of the tank body 1, the outer side of the second positioning ring 3 is slidably connected to the inner wall of the tank body 1, and the second positioning ring 3 is respectively provided with a sliding groove 7 adapted to the guide rod 6, and the second positioning ring 3 is slidably connected to the guide rod 6 through the sliding groove 7. Figure 1-3 As shown, at least two guide rods 6 are evenly arranged with the center of the tank body 1 as the center, the guide rods 6 are connected to the side wall of the tank body 1, and a sliding groove 7 adapted to the guide rod 6 is provided on the second positioning ring 3. The second positioning ring 3 is slidably connected to the guide rod 6 through the sliding groove 7, so that the position of the temperature monitoring mechanism can be adjusted according to the liquid level of the LNG, thereby obtaining the temperature of the LNG at different positions in the tank body 1.

[0029] In some embodiments, a pair of fixing plates 8 are further provided between the first positioning ring 2 and the second positioning ring 3, and the two ends of the pair of fixing plates 8 are respectively connected to the inner side of the first positioning ring 2 and the outer side of the second positioning ring 3, and the pair of fixing plates 8 are in the same straight line; a first through hole 9 and a second through hole 10 are provided in the middle of the fixing plate 8, and a screw 11 and a guide rod 12 are respectively provided in the first through hole 9 and the second through hole 10, the screw 11 is screwed to the first through hole 9, and the guide rod 12 and the second through hole 10 are slidably connected, and the two ends of the guide rod 12 are respectively connected to the bottom of the tank body 1 and the top of the tank body 1, one end of the screw 11 is rotatably connected to the bottom of the tank body 1, and the other end of the screw 11 rotatably penetrates the top of the tank body 1, and a mounting plate 13 is provided outside the top of the tank body 1, and a motor 14 is provided on the mounting plate 13, and the output shaft of the motor 14 rotatably penetrates the mounting plate 13 to connect the screw 11. Figure 1-3 As shown, the mounting plate 13 is connected to the top of the tank body 1, which can be bolted or welded. The motor 14 is commercially available, and the output shaft of the motor 14 is connected to the screw 11 through a coupling, and the screw 11 is driven by the motor 14. When the screw 11 is screwed with the first through hole 9, the height position of the fixed plate 8 relative to the screw 11 is changed, so that the second guide ring changes its position on the inner wall of the tank body 1 and the guide rod 6, and a pair of fixed plates 8 are on the same straight line, and the first through hole 9 and the second through hole 10 are located in the middle of the fixed plate 8, so that the first through hole 9 and the second through hole 10 are at the same distance from the center, so that when only the screw 11 is used to drive it, the fixed plate 8 is relatively stable in the height position adjustment of the screw 11 and the guide rod 12; wherein, the frame formed by the first positioning ring 2, the second positioning ring 3 and the positioning plate 4 can allow LNG to pass through without affecting the flow of liquid in the tank body 1.

[0030] In some embodiments, the regulating mechanism includes: a jacket 15, the jacket 15 is arranged outside the tank body 1, a cavity is formed between the jacket 15 and the outer wall of the tank body 1, a first connecting pipe 16 is arranged on the top of the jacket 15, a second connecting pipe 17 is arranged on the bottom of the jacket 15, and both the first connecting pipe 16 and the second connecting pipe 17 are provided with stop valves. Figure 1-3 As shown, the jacket 15 of the regulating mechanism and the outer wall of the tank body 1 form a cavity, and condensate is introduced into the cavity through the first connecting pipe 16, and the condensate after the action is discharged from the cavity through the second connecting pipe 17, wherein the condensate is commercially available, and the condensate in the interlayer maintains the LNG in the tank body 1 to its storage and transportation temperature to protect the safety of the tank body 1, wherein the stop valve is used to control the flow of the condensate in the first connecting pipe 16 and the second connecting pipe 17, which is commercially available.

[0031] In some embodiments, a manhole 18 and an observation hole 19 are respectively provided on the top of the tank body 1, and a manhole 18 cover and an observation hole 19 cover are respectively provided on the manhole 18 and the observation hole 19. Figure 1-3 As shown, the manhole 18 on the top of the tank body 1 is used for later inspection, maintenance and cleaning of the inside of the tank body 1, and the observation port is used to observe the liquid level in the tank body 1, wherein the manhole 18 and the manhole 18 cover are flange-connected, and the observation hole 19 and the observation hole 19 cover are screwed.

[0032] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. A temperature field monitoring system for a full-containment LNG tank under normal operating conditions, which is arranged in a tank body, a liquid discharge pipe is arranged at the bottom of the tank body, and a liquid inlet pipe is arranged at the top of the tank body, characterized in that: include: A temperature monitoring mechanism is arranged inside the tank to monitor the temperature inside the tank; An adjusting mechanism, disposed in the tank body to adjust the height of the temperature monitoring mechanism in the tank body; The regulating mechanism is arranged on the outer wall of the tank body to regulate the temperature inside the tank body.

2. The LNG full containment tank temperature field monitoring system under normal operating conditions according to claim 1 is characterized in that: The temperature monitoring mechanism includes a first positioning ring and a second positioning ring. The first positioning ring and the second positioning ring are both arranged in the tank body with the center of the tank body as the center, and the first positioning ring is located in the second positioning ring. A plurality of positioning plates are evenly arranged between the first positioning ring and the second positioning ring. The two ends of the positioning plates are respectively connected to the outer side of the first positioning ring and the inner side of the second positioning ring. A plurality of temperature sensors are arranged on the surface of the positioning plates to obtain the temperature at different positions in the tank body.

3. The LNG full containment tank temperature field monitoring system under normal operating conditions according to claim 2 is characterized in that: The adjustment mechanism includes: a guide rod, at least two of which are evenly arranged with the center of the tank body as the center, the two ends of the guide rod are respectively connected to the bottom and the top of the tank body, the outer side of the second positioning ring is slidably connected to the inner wall of the tank body, the second positioning ring is respectively provided with sliding grooves adapted to the guide rod, and the second positioning ring is slidably connected to the guide rod through the sliding grooves.

4. The LNG full containment tank temperature field monitoring system under normal operating conditions according to claim 3 is characterized in that: A pair of fixing plates are further provided between the first positioning ring and the second positioning ring, the two ends of the pair of fixing plates are respectively connected to the inner side of the first positioning ring and the outer side of the second positioning ring, and the pair of fixing plates are on the same straight line; A first through hole and a second through hole are provided in the middle of the fixing plate, a screw and a guide rod are provided in the first through hole and the second through hole respectively, the screw is threadedly connected to the first through hole, the guide rod and the second through hole are slidably connected, two ends of the guide rod are respectively connected to the bottom of the tank body and the top of the tank body, one end of the screw is rotatably connected to the bottom of the tank body, and the other end of the screw rotatably passes through the top of the tank body, a mounting plate is provided outside the top of the tank body, a motor is provided on the mounting plate, and an output shaft of the motor rotatably passes through the mounting plate to connect the screw.

5. The LNG full containment tank temperature field monitoring system under normal operating conditions according to claim 3 is characterized in that: The regulating mechanism comprises: a jacket, which is arranged outside the tank body, and a cavity is formed between the jacket and the outer wall of the tank body, a first connecting pipe is arranged on the top of the jacket, and a second connecting pipe is arranged on the bottom of the jacket, and stop valves are arranged on the first connecting pipe and the second connecting pipe.

6. The LNG full containment tank temperature field monitoring system under normal operating conditions according to claim 3 is characterized in that: A manhole and an observation hole are respectively arranged on the top of the tank body, and a manhole cover and an observation hole cover are respectively arranged on the manhole and the observation hole.

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