A natural gas dehumidification device

Abstract

This utility model discloses a natural gas dehumidification device, including a dehumidification box, a condenser pipe, a drive pump, a heat exchanger, a first valve, a second valve, a power mechanism, a water tank, and a drain valve. The dehumidification box has an inlet and an outlet. The condenser pipe is installed inside the dehumidification box. The drive pump and heat exchanger are located outside the dehumidification box and form a cooling circuit with the condenser pipe. Refrigerant is installed in the cooling circuit. The water tank is connected to the lower side of the dehumidification box via the first valve. The dehumidification device includes a water storage state and a drain state. In the water storage state, the first valve is open, the dehumidification box is connected to the water tank via the first valve, the second valve is closed, and the drain tank is closed. In the drain state, the first valve is closed, the second valve is open, the water tank is connected to the atmosphere via the second valve, and the drain valve is open. The power mechanism can control the first and second valves to switch the states of the dehumidification device. This utility model proposes a natural gas dehumidification device that reduces natural gas waste and improves safety.

Description

Technical Field

[0001] This utility model relates to the field of dehumidification technology, and in particular to a natural gas dehumidification device. Background Technology

[0002] In natural gas pipeline transportation, the natural gas needs to be dried to prevent water vapor in the natural gas from condensing into liquid water and corroding the pipeline. Existing natural gas dehumidification devices, as shown in patent application number CN202321181887.X, include a dehumidification chamber, a condenser pipe, an inlet pipe, a drain pipe, and a solenoid valve. Natural gas enters the dehumidification chamber through the inlet pipe. As the natural gas passes through the condenser pipe, water vapor condenses and precipitates out, reducing the humidity in the natural gas. During drainage, the solenoid valve opens, and the water in the dehumidification chamber is discharged through the drain pipe. However, because the dehumidification chamber and the drain pipe are connected during drainage, some of the natural gas in the dehumidification chamber is also discharged through the drain pipe, resulting in natural gas waste and safety hazards. Utility Model Content

[0003] To address the shortcomings of existing natural gas dehumidification devices, which easily lead to natural gas waste and safety hazards during drainage, this invention proposes a natural gas dehumidification device that reduces natural gas waste and improves safety.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A natural gas dehumidification device includes a dehumidification chamber, a condenser pipe, a drive pump, a heat exchanger, a first valve, a second valve, a power mechanism, a water tank, and a drain valve. The dehumidification chamber has an inlet and an outlet. The condenser pipe is located inside the dehumidification chamber. The drive pump and heat exchanger are located outside the dehumidification chamber and form a cooling circuit with the condenser pipe. Refrigerant is placed in the cooling circuit. The water tank is connected to the lower side of the dehumidification chamber via the first valve. The second valve is installed on the upper side of the water tank. The drain valve is installed on the lower side of the water tank. The dehumidification device includes a water storage state and a drain state. In the water storage state, the first valve is open, connecting the dehumidification chamber to the water tank via the first valve, and the second valve is closed, closing the drain tank. In the drain state, the first valve is closed, the second valve is open, connecting the water tank to the atmosphere via the second valve, and the drain valve is open. The power mechanism can control the first and second valves to switch the states of the dehumidification device.

[0005] With the above settings, when the dehumidifier drains water, the first valve is closed to isolate the dehumidifier box from the water tank, preventing the natural gas in the dehumidifier box from being discharged together through the drain valve, reducing natural gas waste and improving drainage safety.

[0006] Furthermore, the first valve includes a first valve body and a first valve core. The first valve body is vertically fixed between the dehumidification box and the water tank. The first valve body is provided with an inlet, a first rotating groove and an outlet from top to bottom. The first valve core is rotatably connected in the first rotating groove. The first valve core is radially provided with a first through hole. The power mechanism can drive the first valve core to rotate. In the water storage state, the dehumidification box is connected to the water tank through the inlet, the first through hole and the outlet. In the drainage state, the inlet and outlet are both offset from the first through hole, and the first valve core isolates the inlet and outlet.

[0007] With the above settings, rotate the first valve core to switch the state of the first valve.

[0008] Furthermore, the second valve includes a second valve body and a second valve core. The second valve body is vertically fixed to the upper side of the water tank. The second valve body is provided with an upper air return port, a second rotating groove, and a lower air return port from top to bottom. The second valve core is rotatably connected in the second rotating groove. The second valve core is radially provided with a second through hole. The power mechanism can drive the second valve core to rotate. In the water storage state, the lower air return port and the upper air return port are both staggered from the second through hole. The second valve core isolates the lower air return port and the upper air return port. In the drainage state, the atmosphere is connected to the water tank through the upper air return port, the second through hole, and the lower air return port.

[0009] By using the above settings, rotate the second valve core to switch the state of the second valve.

[0010] Furthermore, the power mechanism includes a transmission shaft, a drive shaft, and a motor. The first valve core and the second valve core are coaxially arranged. The transmission shaft is coaxially fixedly connected between the first valve core and the second valve core. The motor is fixedly connected to the first valve core through the drive shaft.

[0011] With the above settings, the motor drives the first valve core and the second valve core to rotate synchronously through the drive shaft and transmission shaft, so as to switch the state of the first valve and the second valve synchronously.

[0012] Furthermore, the dehumidification device also includes a controller and a detection mechanism for detecting the water level in the water tank. The detection mechanism, drain valve, and motor are all connected to the controller.

[0013] The above settings enable automatic drainage.

[0014] Furthermore, the detection mechanism includes a sleeve, a guide rod, a float, a bracket, and a photoelectric sensor. The sleeve extends vertically through the upper side of the water tank and is fixedly connected to the water tank. The guide rod extends through the sleeve and is slidably connected to the sleeve in a sealed manner. The float is placed in the water tank and is fixedly connected to the lower end of the guide rod. The photoelectric sensor is fixedly connected to the upper part of the water tank through the bracket and is connected to the controller. When the float approaches the upper side of the water tank, the photoelectric sensor can detect the upper end of the guide rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the dehumidification device in the water storage state as shown in the embodiment.

[0016] Figure 2 This is a schematic diagram of the dehumidification device in the embodiment, showing its drainage state. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0018] like Figures 1 to 2 A natural gas dehumidification device includes a dehumidification chamber 3, a condenser pipe 4, a drive pump, a heat exchanger, a first valve 5, a second valve 6, a power mechanism 7, a water tank 8, and a drain valve 9. The dehumidification chamber 3 has an inlet 10 and an outlet 11. The condenser pipe 4 is located inside the dehumidification chamber 3. The drive pump and heat exchanger are located outside the dehumidification chamber 3 and form a cooling circuit with the condenser pipe 4. Refrigerant is used in the cooling circuit. The water tank 8 is connected to the lower side of the dehumidification chamber 3 via the first valve 5. The second valve 6 is installed on the upper side of the water tank 8, and the drain valve 9 is installed on the lower side of the water tank 8. The dehumidification device includes a water storage state and a drain state. In the water storage state, the first valve 5 is open, the dehumidification chamber 3 is connected to the water tank 8 via the first valve 5, the second valve 6 is closed, and the drain tank 8 is closed. In the drain state, the first valve 5 is closed, the second valve 6 is open, the water tank 8 is connected to the atmosphere via the second valve 6, and the drain valve 9 is open. The power mechanism 7 can control the first valve 5 and the second valve 6 to switch the state of the dehumidification device.

[0019] With the above settings, when the dehumidifier drains water, the first valve 5 is closed to isolate the dehumidifier box 3 from the water tank 8, preventing the natural gas in the dehumidifier box 3 from being discharged together through the drain valve 9, reducing natural gas waste and improving drainage safety.

[0020] When the dehumidification device of this application is in a water storage state, the drive pump runs, and the refrigerant circulates in the cooling circuit. The refrigerant is specifically an ethylene glycol solution. When the low-temperature refrigerant flows to the condenser tube 4, it absorbs heat from the natural gas and the water vapor therein, causing the water vapor to condense. After the refrigerant flows to the heat exchanger, the heat in the refrigerant is discharged to the atmosphere through the heat exchanger, and the refrigerant returns to a low-temperature state. This cycle repeats, and the condenser tube 4 is kept at a low temperature in real time. Natural gas enters the dehumidification chamber 3 through the air inlet 10. When the natural gas passes through the condenser tube 4, the water vapor in the natural gas is cooled and precipitated. After the humidity of the natural gas decreases, it leaves the dehumidification chamber 3 through the air outlet 11. The liquid water on the condenser tube 4 falls to the surface under the action of gravity. Natural gas flows from the bottom of the dehumidifier 3 into the water tank 8 via the first valve 5. When drainage is needed, the power mechanism 7 activates, closing the first valve 5 and opening the second valve 6. At this time, natural gas continues to dehumidify through the condenser pipe 4. Liquid water droplets on the condenser pipe 4 are pre-stored at the bottom of the dehumidifier 3. After the drain valve 9 opens, the water in the water tank 8 is discharged through the drain valve 9. Outside air enters the water tank 8 through the second valve 6, maintaining a normal pressure in the water tank 8 to facilitate water drainage. During drainage, the first valve 5 is closed, preventing natural gas from being discharged from the dehumidifier 3 through the first valve 5 and the drain valve 9, reducing natural gas waste and improving drainage safety. After drainage is complete, the dehumidifier switches back to the water storage state and begins the next cycle of operation.

[0021] In one implementation, the first valve 5 includes a first valve body 51 and a first valve core 52. The first valve body 51 is vertically fixed between the dehumidification box 3 and the water tank 8. The first valve body 51 has an inlet 53, a first rotating groove 54 and an outlet 55 arranged sequentially from top to bottom. The first valve core 52 is rotatably connected in the first rotating groove 54. The first valve core 52 has a first through hole 56 arranged radially through it. The power mechanism 7 can drive the first valve core 52 to rotate. In the water storage state, the dehumidification box 3 is connected to the water tank 8 through the inlet 53, the first through hole 56 and the outlet 55. In the drainage state, the inlet 53 and the outlet 55 are both offset from the first through hole 56. The first valve core 52 isolates the inlet 53 and the outlet 55.

[0022] With the above settings, rotate the first valve core 52 to switch the state of the first valve 5.

[0023] The first rotating groove 54 of this application has a horizontally arranged cylindrical spatial structure. The first valve core 52 is a cylindrical structure adapted to the first rotating groove 54. When the first valve core 52 is rotatably connected in the first rotating groove 54, the outer wall of the first valve core 52 is sealed and fitted with the groove wall of the first rotating groove 54 to ensure sealing. In the water storage state, the first through hole 56 is vertical, with the upper end of the first through hole 56 coinciding with the water inlet 53, and the lower end of the second through hole 66 coinciding with the water outlet 55. Water in the dehumidification box 3 flows downward into the water tank 8 through the water inlet 53, the first through hole 56, and the water outlet 55. The power mechanism 7 drives the first valve core 52 to rotate 90°, as... Figure 2 When the dehumidifier switches to the drainage state, the inlet 53 and outlet 55 are both offset from the first through hole 56. The first valve core 52 is blocked between the inlet 53 and the outlet 55 to prevent the water and natural gas in the dehumidifier box 3 from moving downward through the first valve 5.

[0024] As one implementation, the second valve 6 includes a second valve body 61 and a second valve core 62. The second valve body 61 is vertically fixed to the upper side of the water tank 8. The second valve body 61 is provided with an upper air return port 63, a second rotating groove 64, and a lower air return port 65 arranged sequentially from top to bottom. The second valve core 62 is rotatably connected in the second rotating groove 64. The second valve core 62 is radially provided with a second through hole 66. The power mechanism 7 can drive the second valve core 62 to rotate. In the water storage state, the lower air return port 65 and the upper air return port 63 are both staggered from the second through hole 66. The second valve core 62 isolates the lower air return port 65 from the upper air return port 63. In the drainage state, the atmosphere communicates with the water tank 8 through the upper air return port 63, the second through hole 66, and the lower air return port 65.

[0025] With the above settings, rotate the second valve core 62 to switch the state of the second valve 6.

[0026] The second rotating groove 64 of this application has a horizontally arranged cylindrical spatial structure. The second valve core 62 is a cylindrical structure adapted to the second rotating groove 64. When the second valve core 62 is rotatably connected in the second rotating groove 64, the outer wall of the second valve core 62 is sealed and fitted with the groove wall of the second rotating groove 64 to ensure sealing. In the water storage state, the upper air return port 63 and the lower air return port 65 are both offset from the second through hole 66. The second valve core 62 is positioned between the upper air return port 63 and the lower air return port 65 to prevent outside air from entering the water tank 8 through the second valve 6 and affecting the natural gas composition. Figure 1 The power mechanism 7 drives the second valve core 62 to rotate 90°, and the dehumidifier switches to the drainage state. The upper end of the second through hole 66 coincides with the upper return air port 63, and the lower end of the second through hole 66 coincides with the lower return air port 65. Outside air enters the water tank 8 through the upper return air port 63, the second through hole 66, and the lower return air port 65. Figure 2 .

[0027] As one implementation, the power mechanism 7 includes a transmission shaft 71, a drive shaft 72 and a motor 73. The first valve core 52 and the second valve core 62 are coaxially arranged. The transmission shaft 71 is coaxially fixedly connected between the first valve core 52 and the second valve core 62. The motor 73 is fixedly connected to the first valve core 52 through the drive shaft 72.

[0028] With the above settings, the motor 73 drives the first valve core 52 and the second valve core 62 to rotate synchronously through the drive shaft 72 and the transmission shaft 71, so as to synchronously switch the state of the first valve 5 and the second valve 6.

[0029] Specifically, one end of the drive shaft 71 passes through one side of the second valve body 61 and is fixedly connected to the second valve core 62, and the other end passes through one side of the first valve body 51 and is fixedly connected to the first valve core 52. One end of the drive shaft 72 is fixedly connected to the motor 73, and the other end of the drive shaft 72 passes through the other side of the first valve body 51 and is fixedly connected to the first valve core 52.

[0030] As one implementation, the dehumidification device also includes a controller and a detection mechanism for detecting the water level in the water tank 8. The detection mechanism, drain valve 9, and motor 73 are all connected to the controller.

[0031] The above settings enable automatic drainage.

[0032] The testing agency detects the water level in the water tank 8. When the water level in the water tank 8 approaches saturation, the controller automatically opens the drain valve 9 and the second valve 6, and automatically closes the first valve 5 to drain the dehumidifier. When the water level in the water tank 8 drops to the low water level, the controller automatically closes the drain valve 9 and the second valve 6, and automatically opens the first valve 5 to store water in the dehumidifier's water tank 8.

[0033] As one implementation method, the detection mechanism includes a sleeve 12, a guide rod 13, a float 14, a bracket 15, and a photoelectric sensor 16. The sleeve 12 extends vertically through the upper side of the water tank 8 and is fixedly connected to the water tank 8. The guide rod 13 extends through the sleeve 12 and is slidably connected to the sleeve 12. The float 14 is placed in the water tank 8 and is fixedly connected to the lower end of the guide rod 13. The photoelectric sensor 16 is fixedly connected to the upper part of the water tank 8 through the bracket 15. The photoelectric sensor 16 is connected to the controller. When the float 14 approaches the upper side of the water tank 8, the photoelectric sensor 16 can detect the upper end of the guide rod 13.

[0034] When there is no water in water tank 8, the float 14 contacts the bottom surface of water tank 8 under the action of gravity, such as Figure 1The upper end of the guide rod 13 protrudes slightly from the upper end of the sleeve 12. As the water level in the water tank 8 rises, the float 14 rises with the water level. The float 14 drives the guide rod 13 to move upward synchronously. The upper end of the guide rod 13 moves upward and approaches the photoelectric sensor 16. When the upper end of the guide rod 13 moves to the photoelectric sensor 16, the photoelectric sensor 16 detects the upper end of the guide rod 13. At this time, the upper side of the float 14 abuts against the upper side of the water tank 8, indicating that the water level in the water tank 8 is approaching saturation. The controller controls the power mechanism 7 to operate, and the water tank 8 begins to drain. After 60 seconds of drainage, the water in the water tank 8 is basically emptied. The controller controls the power mechanism 7, and the dehumidification device automatically switches back to the water storage state.

[0035] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A natural gas dehumidification device, characterized by, The device includes a dehumidifier, condenser coils, a drive pump, a heat exchanger, a first valve, a second valve, a power mechanism, a water tank, and a drain valve. The dehumidifier has an air inlet and an air outlet. The condenser coils are located inside the dehumidifier. The drive pump and heat exchanger are located outside the dehumidifier and form a cooling circuit with the condenser coils. Refrigerant is used in the cooling circuit. The water tank is connected to the lower side of the dehumidifier via the first valve. The second valve is installed on the upper side of the water tank. The drain valve is installed on the lower side of the water tank. The dehumidifier has two states: a water storage state and a drain state. In the water storage state, the first valve is open, connecting the dehumidifier to the water tank via the first valve, and the second valve is closed, closing the drain tank. In the drain state, the first valve is closed, the second valve is open, connecting the water tank to the atmosphere via the second valve, and the drain valve is open. The power mechanism can control the first and second valves to switch the states of the dehumidifier.

2. A natural gas dehumidification device according to claim 1, characterized in that, The first valve includes a first valve body and a first valve core. The first valve body is vertically fixed between the dehumidification box and the water tank. The first valve body is provided with an inlet, a first rotating groove and an outlet from top to bottom. The first valve core is rotatably connected in the first rotating groove. The first valve core is radially provided with a first through hole. The power mechanism can drive the first valve core to rotate. In the water storage state, the dehumidification box is connected to the water tank through the inlet, the first through hole and the outlet. In the drainage state, the inlet and outlet are both offset from the first through hole. The first valve core isolates the inlet and outlet.

3. A natural gas dehumidification device according to claim 2, wherein The second valve includes a second valve body and a second valve core. The second valve body is vertically fixed to the upper side of the water tank. The second valve body is provided with an upper air return port, a second rotating groove, and a lower air return port from top to bottom. The second valve core is rotatably connected in the second rotating groove. The second valve core is radially provided with a second through hole. The power mechanism can drive the second valve core to rotate. In the water storage state, the lower air return port and the upper air return port are both offset from the second through hole. The second valve core isolates the lower air return port and the upper air return port. In the drainage state, the atmosphere communicates with the water tank through the upper air return port, the second through hole, and the lower air return port.

4. A natural gas dehumidification device according to claim 3, wherein The power mechanism includes a transmission shaft, a drive shaft, and a motor. The first valve core and the second valve core are coaxially arranged. The transmission shaft is coaxially fixedly connected between the first valve core and the second valve core. The motor is fixedly connected to the first valve core through the drive shaft.

5. The natural gas dehumidification device of claim 1, wherein, The dehumidification device also includes a controller and a detection mechanism for detecting the water level in the water tank. The detection mechanism, drain valve, and motor are all connected to the controller.

6. A natural gas dehumidification device according to claim 5, wherein The detection mechanism includes a sleeve, a guide rod, a float, a bracket, and a photoelectric sensor. The sleeve vertically penetrates the upper side of the water tank and is fixedly connected to the water tank. The guide rod penetrates the sleeve and is slidably connected to the sleeve in a sealed manner. The float is placed in the water tank and is fixedly connected to the lower end of the guide rod. The photoelectric sensor is fixedly connected to the upper part of the water tank through the bracket and is connected to the controller. When the float approaches the upper side of the water tank, the photoelectric sensor can detect the upper end of the guide rod.

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