An ANG adsorption tank with detection function

Abstract

The utility model relates to the technical field of natural gas adsorption storage, and in particular discloses an ANG adsorption tank with a detection function, including a tank body, a tank cover, an internal vertical pipe, a cooling pipe and a detection device. The tank cover is on the top of the tank body, and the internal vertical pipe and the cooling pipe are both arranged inside the tank body. Both ends of the cooling pipe extend out of the tank body respectively. The tank cover is provided with an inlet and outlet pipe, and the lower end of the inlet and outlet pipe passes through the tank cover and extends into the tank body to connect with the internal vertical pipe. The detection device is arranged on the tank body, and the tank body is filled with an adsorbent. The utility model penetrates the tank body through the internal vertical pipe, so as to achieve the purpose of gas circulation and rapid adsorption balance in the tank body, thereby improving efficiency. The cooling pipe adopts a coil form to provide energy for heat exchange. Through multiple temperature sensors installed on the tank body and different installation depths of the multiple temperature sensors, the temperature detection of different positions inside the tank body during adsorption and desorption is realized, and the temperature change in the tank body is monitored in real time, so as to realize real-time recording.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas adsorption storage, in particular to an ANG adsorption tank with a detection function. Background Art

[0002] Currently, there is a shortage of natural gas adsorption storage equipment, and the commonly used technologies are pipeline transportation, cryogenic liquefaction technology (LNG) and high-pressure compression (CNG). These three technical methods have certain limitations: 1. Pipeline transportation has low cost but high construction cost, requiring the use of a large amount of land resources, and is suitable for large flow and stable gas output environments; 2. LNG storage requires special low-temperature storage tanks due to the high critical pressure and low critical temperature of natural gas liquefaction; 3. CNG gas storage pressure must be as high as 20MPa or more, which is a high-pressure container with high requirements for containers and high transportation costs.

[0003] Natural gas adsorption storage ANG technology is another high-tech natural gas technology besides LNG and CNG. It has better economy and safety, and can replace the existing LNG and CNG technologies. ANG storage and transportation technology is still in the research and development stage at home and abroad. Since the adsorbent inside the tank repeatedly absorbs and releases heat during the adsorption and desorption process, the adsorption tank is one of the keys to ANG storage and transportation technology. In order to make the tank have a large gas storage capacity and avoid the equipment working under high pressure, it is necessary to provide a new type of adsorption tank. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art and provide an ANG adsorption tank with a detection function.

[0005] The technical solution of the utility model is:

[0006] An ANG adsorption tank with a detection function comprises a tank body, a tank cover, an internal vertical pipe, a cooling pipe and a detection device. The tank cover is detachably arranged on the top of the tank body. The internal vertical pipe and the cooling pipe are both arranged inside the tank body. The upper end of the internal vertical pipe is connected to the upper part of the tank body, and the lower end of the internal vertical pipe extends downward to above the bottom of the tank body. Both ends of the cooling pipe extend out of the tank body respectively, and the two ends of the cooling pipe are respectively located at the upper and lower parts of the tank body. An inlet and outlet pipe is arranged on the tank cover, and the lower end of the inlet and outlet pipe passes through the tank cover and extends into the tank body to be connected with the internal vertical pipe. The detection device comprises two groups of detection components arranged up and down, and the detection component comprises four fixing seats evenly distributed on the side wall of the tank body. A temperature sensor is inserted into the fixing seat, and the tank body is filled with an adsorbent.

[0007] Preferably, the internal vertical tube includes a fixed plate, a support plate, a perforated tube and a non-woven fabric sleeve. The number of the fixed plate and the support plate are both set to two. The two fixed plates are symmetrically arranged on the inner wall of the tank body, and the two support plates are symmetrically arranged on both sides of the perforated tube. The support plate is connected to the fixed plate through fasteners, and the non-woven fabric sleeve is sleeved on the outside of the perforated tube. The non-woven fabric sleeve and the perforated tube are connected to the inlet and outlet pipes through a throat.

[0008] Preferably, a safety valve, a pressure transmitter and a vent valve are provided on the tank cover, and the safety valve, the pressure transmitter and the vent valve all penetrate the tank cover and communicate with the interior of the tank body.

[0009] Preferably, a non-woven fabric layer and a coconut palm mat layer are sequentially arranged above the adsorbent.

[0010] Preferably, a connecting flange is provided at the end of the inlet and outlet pipe away from the tank cover, and cooling flanges are provided at both ends of the cooling pipe.

[0011] Preferably, the cooling tube is a coil.

[0012] Preferably, the cooling tube is a spiral coil or a U-shaped coil.

[0013] Preferably, a sealing ring is provided on the top of the tank body, and the sealing ring is provided between the tank body and the tank cover.

[0014] Preferably, support legs are arranged at equal angles on the bottom of the tank body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The internal vertical pipe runs from the top of the tank to the bottom of the tank. When the gas is ventilated into the tank through the inlet and outlet pipes, the gas can quickly and evenly reach the inside of the tank through the perforated pipe, achieving the purpose of gas circulation and rapid adsorption balance in the tank, avoiding the defects of long adsorption and desorption time caused by the large internal volume of the tank, and improving efficiency;

[0017] 2. The cooling pipe adopts the coil form and is spirally arranged in the tank body to provide energy for heat exchange. When storing gas, the cooling medium is introduced into the cooling pipe to reduce the adsorbent temperature and improve the adsorption performance of the adsorbent. When releasing gas, hot water or hot air is introduced into the cooling pipe to increase the adsorbent temperature and increase the effective desorption amount of the adsorbent;

[0018] 3. By installing multiple temperature sensors on the tank body and different installation depths of multiple temperature sensors, the temperature detection at different positions inside the tank body during the adsorption and desorption process can be realized, the temperature changes in the tank body can be monitored in real time, and real-time recording can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the AA cross-sectional structure of the utility model;

[0021] Figure 3 It is a partial enlarged structural schematic diagram of B of the utility model;

[0022] Figure 4 It is a schematic diagram of the internal vertical pipe structure of the utility model.

[0023] Among them, 1. safety valve; 2. pressure transmitter; 3. vent valve; 4. coconut palm cushion layer; 5. non-woven fabric layer; 6. internal vertical pipe; 61. fixing plate; 62. fastener; 63. support plate; 64. throat clamp; 65. punching pipe; 66. non-woven fabric sleeve; 7. cooling pipe; 8. cooling flange; 9. fixing seat; 10. temperature sensor; 11. tank body; 12. tank cover; 13. inlet and outlet pipes; 14. connecting flange; 15. adsorbent; 16. sealing ring; 17. support leg. DETAILED DESCRIPTION

[0024] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.

[0025] like Figure 1-Figure 4 As shown, an ANG adsorption tank with a detection function includes a tank body 11, a tank cover 12, an internal vertical pipe 6, a cooling pipe 7 and a detection device. The tank body 11 is made of Q345R steel plate. Q345R steel has good weldability and plasticity and is suitable for low-temperature pressure vessels. Its design temperature and design pressure meet the process requirements of the ANG adsorption tank. The tank cover 12 is installed on the top of the tank body 11. Support legs 17 are welded at equal angles on the bottom of the tank body 11 to achieve stable support for the tank body 11. The internal vertical pipe 6 and the cooling pipe 7 are both installed inside the tank body 11. The internal vertical pipe 6 runs through the entire tank body 11 from top to bottom to achieve the purpose of internal gas circulation and rapid adsorption balance, shorten the time of gas adsorption and desorption, and improve work efficiency. The detection device is installed on the tank body 11. The detection device includes two groups of detection components. The two groups of detection components are installed on the tank body 11 at intervals from top to bottom to detect the temperature of different positions inside the tank body 11 during adsorption and desorption, realize real-time recording and real-time monitoring, and fill the tank body 11 with adsorbent 15.

[0026] like Figure 1 and Figure 3As shown, the tank cover 12 is installed on the tank body 11 by bolts, and an inlet and outlet pipe 13 is welded at the center of the tank cover 12. The lower end of the inlet and outlet pipe 13 passes through the tank cover 12 and extends. When the tank cover 12 is installed on the tank body 11, the lower end of the inlet and outlet pipe 13 can be inserted into the tank body 11 and connected with the internal vertical pipe 6. Since the entire adsorption and desorption process will not be started at the same time, ventilation and exhaust can be achieved through one inlet and outlet pipe 13. A connecting flange 14 is welded on the upper end of the inlet and outlet pipe 13 away from the tank cover 12. An external gas source is connected through the connecting flange 14 to achieve the introduction and exhaust of gas in the tank body 11. A sealing ring 16 is installed on the top of the tank body 11. The sealing ring 16 is squeezed and installed between the tank body 11 and the tank cover 12 to enhance the sealing between the tank body 11 and the tank cover 12 to avoid air leakage.

[0027] like Figure 1 and Figure 4 As shown, the upper end of the internal vertical pipe 6 is connected to the inner upper end of the tank body 11. Specifically, the internal vertical pipe 6 includes a fixing plate 61, a support plate 63, a perforated tube 65 and a non-woven fabric sleeve 66. The number of the fixing plate 61 and the support plate 63 are both two. The two fixing plates 61 are welded to the inner wall of the tank body 11. The two fixing plates 61 are symmetrically distributed. The two support plates 63 are symmetrically welded to both sides of the upper end of the perforated tube 65. The support plate 63 is connected to the fixing plate 61 through a fastener 62. The fastener 62 adopts But it is not limited to bolts and nuts. Regular small holes are evenly distributed on the circumference of the punching tube 65 to facilitate gas circulation. A non-woven sleeve 66 is installed on the outside of the punching tube 65. After installation, the lower end of the punching tube 65 is clamped tightly with the non-woven sleeve 66 and the punching tube 65 through the throat clamp 64, and the upper end of the punching tube 65 is tightly connected to the inlet and outlet pipe 13 through the throat clamp 64. By installing the non-woven sleeve 66 on the outside of the punching tube 65, the adsorbent 15 can be prevented from clogging the small holes on the punching tube 65.

[0028] like Figure 1 and Figure 2As shown, the detection component includes a temperature sensor 10 and a fixing seat 9, the number of the temperature sensor 10 and the fixing seat 9 are both four, the four fixing seats 9 are evenly distributed on the side wall of the tank body 11 at equal angles, the temperature sensor 10 is threadedly connected to the fixing seat 9, and the four temperature sensors 10 are screwed into the fixing seat 9 to different depths, that is, the temperature sensors 10 are inserted into the tank body 11 to different depths. Specifically, the four temperature sensors 10 are divided into 1# temperature sensor 10, 2# temperature sensor 10, 3# temperature sensor 10 and 4# temperature sensor 10, wherein the temperature measuring point of 1# temperature sensor 10 is located on the inner wall of the tank body 11 The temperature measuring point of the 2# temperature sensor 10 is located at 2 / 3 of the distance from the inner wall of the tank body 11 to the center of the tank body 11, the temperature measuring point of the 3# temperature sensor 10 is located at 1 / 3 of the distance from the inner wall of the tank body 11 to the center of the tank body 11, and the temperature measuring point of the 4# temperature sensor 10 is located at the center of the tank body 11. Through the two groups of detection components installed at intervals above and below and the different temperature measuring points of the four temperature sensors 10 in each group of detection components, the temperature at different positions inside the tank body 11 can be monitored in real time, and the temperature changes in the tank body 11 can be detected. The temperature sensor 10 adopts but is not limited to PT100 thermal resistor, with high accuracy level, accurate and reliable detection.

[0029] like Figure 1 and Figure 2 As shown, the cooling pipe 7 is located inside the tank body 11. The cooling pipe 7 adopts a coil structure, or a spiral coil or a U-shaped coil. The two ends of the cooling pipe 7 extend to the outside of the tank body 11 respectively. The two ends of the cooling pipe 7 are respectively located at the upper and lower parts of the tank body 11. The upper part of the cooling pipe 7 is the inlet, and the lower part of the cooling pipe 7 is the outlet. Cooling flanges 8 are connected to the ends of both ends of the cooling pipe 7 for connecting an external cooling medium to provide energy for heat exchange. The cooling medium is cooling water or cooling air. When storing gas, the cooling medium is introduced into the cooling pipe 7 coil to reduce the temperature of the adsorbent 15 bed and improve the adsorption performance of the adsorbent 15; when degassing, hot water or hot air is introduced into the coil to increase the temperature of the adsorbent 15 bed and increase the effective desorption amount of the adsorbent 15.

[0030] like Figure 1 As shown, a safety valve 1, a pressure transmitter 2 and a vent valve 3 are installed on the tank cover 12 and around the inlet and outlet pipes 13. The safety valve 1, the pressure transmitter 2 and the vent valve 3 all penetrate the tank cover 12 and are connected to the interior of the tank body 11. The set pressure of the safety valve 1 is 6.5MPa, which is used to protect the normal operation of the adsorption in the tank body 11, prevent accidents and reduce losses. The pressure transmitter 2 is mainly used to detect the change of the pressure in the tank body 11. When the adsorbent 15 is regenerated and back-flushed, the vent valve 3 is first opened to vent, and then compressed air or high-temperature nitrogen is continuously filled for purging.

[0031] like Figure 1 and Figure 3As shown, the adsorbent 15 fills the interior of the filling tank body 11. The adsorbent 15 adopts regular small particles, which eliminates the accumulation that is easily caused by the powdered adsorbent 15 and reduces the flow resistance. The granular adsorbent 15 can also avoid the flying of dust during filling. During the filling process of the adsorbent 15, the tank body 11 can be subjected to irregular filling vibration to ensure uniform filling and to fill more adsorbent 15 in the tank body 11 to the greatest extent, so as to achieve the purpose of increasing the adsorption amount. After the adsorbent 15 is filled, a non-woven fabric layer 5 is added on the top of the adsorbent 15, and the non-woven fabric layer 5 is pressed with a coconut palm mat layer 4 to prevent the adsorbent 15 from moving during adsorption and desorption.

[0032] The working principle of the utility model is:

[0033] When in use, after the internal vertical pipe 6 is installed and connected in the tank body 11, the tank body 11 is filled with the adsorbent 15, the non-woven fabric layer 5 is covered on the top of the adsorbent 15 and then pressed with the coconut palm mat layer 4, the tank cover 12 is tightly closed on the tank body 11, bolted and fastened, and the inlet and outlet pipes 13 are correspondingly inserted into the punching pipe 65;

[0034] During adsorption, air is ventilated into the tank body 11 through the connecting flange 14 and the inlet and outlet pipes 13, and the gas quickly and evenly enters the tank body 11 through the perforated pipe 65 that runs through the entire tank body 11. At the same time, a cooling medium is introduced into the cooling pipe 7 from the upper part of the cooling pipe 7, and the cooling medium circulates in the coil-shaped cooling pipe 7 and flows out from the lower part of the cooling pipe 7 to reduce the temperature of the adsorbent 15 bed layer, improve the adsorption performance of the adsorbent 15, and improve the adsorption efficiency;

[0035] During desorption, the gas in the tank 11 is discharged through the inlet and outlet pipes 13, and at the same time, hot water or hot air is introduced into the cooling pipe 7 to increase the temperature of the adsorbent 15 bed layer and increase the effective desorption amount of the adsorbent 15;

[0036] During the adsorption and desorption process, the temperature of the tank body 11 at different positions is monitored in real time by the temperature sensor 10 installed on the tank body 11 .

[0037] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. An ANG adsorption tank with detection function, characterized in that: The invention comprises a tank body (11), a tank cover (12), an internal vertical pipe (6), a cooling pipe (7) and a detection device, wherein the tank cover (12) is detachably arranged on the top of the tank body (11), the internal vertical pipe (6) and the cooling pipe (7) are both arranged inside the tank body (11), the upper end of the internal vertical pipe (6) is connected to the upper part of the tank body (11), the lower end of the internal vertical pipe (6) extends downward to above the bottom of the tank body (11), the two ends of the cooling pipe (7) respectively extend out of the tank body (11), and the two ends of the cooling pipe (7) are connected to the upper part of the tank body (11). The tank cover (12) is provided with an inlet and outlet pipe (13), the lower end of the inlet and outlet pipe (13) passes through the tank cover (12) and extends into the tank body (11) to be connected with the internal vertical pipe (6). The detection device comprises two sets of detection components arranged in an upper and lower manner, the detection components comprising four fixing seats (9) evenly distributed on the side wall of the tank body (11), the fixing seats (9) being inserted with a temperature sensor (10), and the tank body (11) is filled with an adsorbent (15).

2. The ANG adsorption tank with detection function according to claim 1, characterized in that: The internal vertical pipe (6) comprises a fixing plate (61), a supporting plate (63), a perforated tube (65) and a non-woven fabric sleeve (66). The number of the fixing plate (61) and the supporting plate (63) is set to two. The two fixing plates (61) are symmetrically arranged on the inner wall of the tank body (11). The two supporting plates (63) are symmetrically arranged on both sides of the perforated tube (65). The supporting plates (63) are connected to the fixing plates (61) via fasteners (62). The non-woven fabric sleeve (66) is sleeved on the outside of the perforated tube (65). The non-woven fabric sleeve (66) and the perforated tube (65) are connected to the inlet and outlet pipes (13) via throat clamps (64).

3. The ANG adsorption tank with detection function according to claim 1, characterized in that: The tank cover (12) is provided with a safety valve (1), a pressure transmitter (2) and a vent valve (3); the safety valve (1), the pressure transmitter (2) and the vent valve (3) all penetrate the tank cover (12) and are in communication with the interior of the tank body (11).

4. The ANG adsorption tank with detection function according to claim 1, characterized in that: A non-woven fabric layer (5) and a coconut palm mat layer (4) are sequentially arranged above the adsorbent (15).

5. The ANG adsorption tank with detection function according to claim 1, characterized in that: The end of the inlet and outlet pipe (13) away from the tank cover (12) is provided with a connecting flange (14), and both end portions of the cooling pipe (7) are provided with cooling flanges (8).

6. The ANG adsorption tank with detection function according to claim 1, characterized in that: The cooling pipe (7) is a coil.

7. The ANG adsorption tank with detection function according to claim 6, characterized in that: The cooling tube (7) is a spiral coil or a U-shaped coil.

8. The ANG adsorption tank with detection function according to claim 1, characterized in that: A sealing ring (16) is provided on the top of the tank body (11), and the sealing ring (16) is provided between the tank body (11) and the tank cover (12).

9. The ANG adsorption tank with detection function according to claim 1, characterized in that: The bottom of the tank body (11) is provided with supporting legs (17) distributed at equal angles.

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