Natural gas dehydration device

Abstract

The invention provides a natural gas dehydration device, and relates to the technical field of natural gas dehydration. The natural gas dehydration device comprises a sealed dehydration box, a cooling box is installed at one end of the sealed dehydration box, a water suction pump is installed at the top end of the cooling box, a water suction pipe is installed on one side of the water suction pump, a drainage pipe is installed at the end, away from the water suction pipe, of the water suction pump, a water guide pipe is connected to one end of the drainage pipe, and a flow guide pipe is installed at the bottom end of the water guide pipe. The bottom end of the flow guide pipe is connected with a condensation dehydration mechanism and a cooling plate, the bottom end of the flow guide pipe is further provided with a dripping pipe, the bottom end of the cooling plate is provided with a water guide sleeve, the two ends of the cooling plate are provided with cleaning mechanisms, and the two ends of the cooling plate are provided with cleaning boxes. The cooling and dewatering device can be automatically cleaned, the situation that the cooling effect is reduced due to the fact that a large number of water drops adhere to the outer wall in the long-term using process of a cooling mechanism is avoided, meanwhile, secondary dewatering operation can be conducted, and the dewatering quality of natural gas is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas dehydration, and in particular to a natural gas dehydration device. Background Art

[0002] During the development of large oil and gas fields, some remote and dispersed gas wells remain unutilized due to insufficient reserves, low production, or remote locations. Some wells are shut down, while others are vented and burned. In today's world of energy shortages and growing calls for environmental protection, this waste is staggering and extremely polluting to the environment. For natural gas from low-yield oil and gas wells in remote and scattered areas where pipelines are difficult to lay or local utilization is difficult, it is recommended to utilize small mobile compressed natural gas (CNG) cylinders for storage and transportation. Natural gas flowing out of the wellhead is almost always saturated with vaporous water and may even carry a certain amount of liquid water. This water can cause the natural gas to form acids within pipelines and equipment, which can corrode them. Therefore, natural gas must be dehydrated before it is introduced into pipelines and equipment. Common dehydration methods include cryogenics, solvent absorption, solid adsorption, chemical reactions, and membrane separation. Cryogenics and solvent absorption are the most widely used in the natural gas industry.

[0003] When using existing natural gas dehydration devices, natural gas is generally injected into a cooling mechanism, which is then refrigerated by the cooling device to quickly cool the natural gas, causing the water in the natural gas to condense, thereby achieving the dehydration of the natural gas. However, during use, due to the long-term use of the refrigeration device, a large number of water droplets are likely to remain on the outer wall of the device. After being attached by a large number of water droplets, the refrigeration effect of the refrigeration device is easily affected, thereby reducing the dehydration purity of the natural gas and making it inconvenient for users to use. Summary of the Invention

[0004] The present invention provides a natural gas dehydration device to solve the problem that in the use of existing natural gas dehydration devices, a large number of water droplets are likely to remain on the outer wall of the device during long-term use of the refrigeration device. After being attached by a large number of water droplets, the refrigeration effect of the refrigeration device is easily affected, thereby reducing the dehydration purity of the natural gas.

[0005] The present invention provides a natural gas dehydration device, comprising a sealed dehydration box, a cooling box installed at one end of the sealed dehydration box, a water pump installed at the top of the cooling box, a water pump installed at one side of the water pump, a drainage pipe installed at the end of the water pump away from the drainage pipe, one end of the drainage pipe is connected to a water guide pipe, a flow guide pipe is installed at the bottom end of the water guide pipe, a condensation and dehydration mechanism is connected at the bottom end of the flow guide pipe, a cooling plate is connected at the bottom end of the water guide pipe, and a drip pipe is also installed at the bottom end of the water guide pipe. A water guide sleeve is installed at the bottom end of the cooling plate, a cleaning mechanism is installed at both ends of the cooling plate, a cleaning box is installed at both ends of the cooling plate, a drain pipe is installed at the bottom end of the cleaning box, a water trough is provided at the top end of the drain pipe, a drainage trough is provided at the bottom end of the water trough, a solvent pipe is installed at the top end of the sealed dehydration box, a solvent valve is installed at the top end of the solvent pipe, a solvent dehydration mechanism is installed at the top end of the sealed dehydration box, an air outlet straight pipe is installed at one end of the sealed dehydration box, and a pressure gauge is provided at the bottom end of the solvent pipe.

[0006] Preferably, an air inlet pipe is installed at one end of the sealed dehydration box, a joint is installed at one end of the air inlet pipe, and an air inlet valve is installed at the top end of the air inlet pipe.

[0007] Preferably, the condensation and dehydration mechanism includes a water storage tank opened inside the cooling plate, a movable piston is installed at the top of the water guide sleeve, a return spring is installed at the bottom end of the movable piston, a water inlet is opened on the inner wall of the water guide sleeve, a drain outlet is opened at the bottom end of the water inlet, and a water exchange hole is opened at the bottom end of the water guide sleeve.

[0008] Preferably, a circulation pump is installed on the back of the sealed dehydration box, a circulation pipe is installed at one end of the circulation pump, and a water supply pipe is installed at one end of the circulation pipe.

[0009] Preferably, the cleaning mechanism includes a water storage tank opened inside the cleaning box, limit sliders are installed at both ends of the cleaning box, telescopic springs are installed at both ends of the bottom of the cleaning box, the outer wall of the telescopic spring is sleeved with a plastic sleeve, both ends of the telescopic spring are connected to a mounting plate, a limit shaft is fixed at the bottom end of the cleaning box, and a limit plate is installed at the bottom end of the limit shaft.

[0010] Preferably, a mounting bracket is fixed to the bottom end of the cooling plate, a pressure spring is installed inside the drain pipe, the bottom end of the pressure spring is connected to a lifting piston, a drain rod is installed at the top end of the mounting bracket, and a waterproof sleeve is installed on the outer wall of the pressure spring.

[0011] Preferably, a mounting bracket is fixed to the bottom end of the cooling plate, a pressure spring is installed inside the drain pipe, the bottom end of the pressure spring is connected to a lifting piston, a drain rod is installed at the top end of the mounting bracket, and a waterproof sleeve is installed on the outer wall of the pressure spring.

[0012] Preferably, the solvent dehydration mechanism comprises a solvent box opened at the top of the sealed dehydration box, a liquid level sensor is installed inside the solvent box, and an automatic air outlet pipe is installed at the bottom of the solvent box.

[0013] Preferably, a stop valve is installed at the top of the automatic air outlet pipe, a piston disk is installed at the bottom end of the automatic air outlet pipe, an adjusting spring is installed at the top of the piston disk, an air inlet bin is opened on the inner wall of the automatic air outlet pipe, an air outlet bin is installed at the top of the air inlet bin, and a ventilation pipe is installed at the top of the stop valve.

[0014] Preferably, a driving motor is installed at the top of the sealed dehydration box, a motor driving shaft is installed at one end of the driving motor, and a stirring rod is installed on the outer wall of the motor driving shaft.

[0015] Beneficial effects:

[0016] 1. When the present invention is dehydrating natural gas, the first dehydration operation is performed through the condensation dehydration mechanism. The water pump is turned on, so that the water pipe draws the cold water inside the cooling box into the drain pipe. The cold water is transported to the inside of the water guide pipe through the drain pipe, and then enters the water storage tank inside the five groups of cooling plates through the guide pipe. The natural gas that then enters the sealed dehydration box through the air inlet pipe will float upward because its density is lower than that of air. After the natural gas passes between the five groups of cooling plates, it is quickly cooled. The water in the natural gas condenses and adheres to the outer wall of the five groups of cooling plates or falls into the bottom of the sealed dehydration box. At the same time, when the five groups of cooling plates are used, the natural gas will float upward because of its lower density than that of air. During the cooling and dehydration process, the water pump will continuously pump the cold water in the cooling box into the inside of the water guide pipe, and continuously inject new cold water into the water storage tank through the guide pipe. Under the water pressure of continuous water injection, the movable piston at the top of the water guide sleeve will move downward under the action of water pressure until the movable piston moves to the bottom of the water inlet. At this time, the water inside the water storage tank will flow to the drain outlet through the water inlet, and then be discharged to the bottom of the sealed dehydration box through the water exchange through hole. The water discharged from the bottom of the sealed dehydration box through the water exchange through hole is pumped back into the cooling box by the circulating pump for cooling treatment, so that the temperature inside the water storage tank is kept at a constant temperature.

[0017] 2. When the present invention cleans the water droplets attached to the outer wall of the cooling plate, the cleaning operation is performed through the cleaning mechanism. During the cooling and dehydrating operation of the cooling plate for the natural gas, most of the water in the natural gas condenses and adheres to the outer wall of the five groups of cooling plates. If the water on the outer wall of the cooling plate is not cleaned for a long time, the cooling effect of the cooling plate will be reduced, thereby reducing the dehydration quality of the natural gas. When using this device, after the water pump draws the cold water in the cooling box into the inside of the water guide pipe, part of the cold water will slowly drip into the water storage tank at the top of the cleaning box through the drip pipe. In the process of slowly increasing the cold water in the water storage tank, the weight of the cleaning box will also increase, which will cause the cleaning box to move slowly downward. Since one side of the cleaning box is in contact with the cooling plate, the water droplets attached to the cooling plate will be scraped off during the downward movement of the cleaning box, thereby completing the cleaning operation of the outer wall of the cooling plate. When the water tank is in the downward movement, the limit sliders at both ends of the cleaning box will also slide downward along the limit slide grooves opened on the inner wall of the sealed dehydration box until the limit slider moves to the slider sensor. At this time, the electromagnet is energized. Since the limit slider contains iron, the electromagnet will adsorb the limit slider. At this time, the drain rod will be inserted into the drain pipe from the bottom, and the lifting piston will be pushed up to the top of the drain groove through the drain rod. At this time, the water inside the water tank will flow to the drain groove through the water trough, and then be discharged through the bottom end of the drain pipe, thereby releasing the water inside the water tank. The speed of water release in the water tank is faster than the water drip flow rate in the drip pipe. Therefore, when the water inside the water tank is drained through the drain pipe, the cleaning box will be lifted up again under the action of the telescopic spring. In the process of the cleaning box being lifted up, the water droplets attached to the outer wall of the cooling plate can be cleaned again, so that the cleaning effect of the cooling plate is better.

[0018] 3. The present invention performs a secondary dehydration operation on natural gas after the first dehydration operation on the natural gas through the solvent dehydration mechanism. The natural gas that has been dehydrated for the first time through the cooling plate will gather at the top of the cooling plate. As natural gas continues to be injected into the sealed dehydration box, the air pressure inside the sealed dehydration box increases, so that the natural gas gathered at the top of the cooling plate will push the piston disk upward until the piston disk is pushed up to the top of the air inlet bin. At this time, the natural gas will enter the air outlet bin through the air inlet bin, and then be discharged from the vent pipe into the solvent tank through the stop valve. Before this, the solvent discharge pipe is connected to the solvent pipe, and the solvent that can react with water in the natural gas is introduced into the interior of the solvent tank by controlling the solvent valve. When the natural gas enters the interior of the solvent tank through the vent pipe, the two sets of drive motors are turned on, so that the motor drive shaft drives the stirring rod to rotate, thereby stirring the solvent to react with the water in the natural gas, making the natural gas dehydration more thorough.

[0019] The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to more clearly understand the technical means of the embodiments of the present invention, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of a natural gas dehydration device of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of a sealed dehydration box of a natural gas dehydration device of the present invention.

[0023] Figure 3 This is a schematic diagram of the water pipe structure of a natural gas dehydration device of the present invention.

[0024] Figure 4 The figure is a schematic structural diagram of the condensation and dehydration mechanism of a natural gas dehydration device according to the present invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of a water guide jacket of a natural gas dehydration device according to the present invention.

[0026] Figure 6 This is a schematic structural diagram of a cleaning mechanism of a natural gas dehydration device according to the present invention.

[0027] Figure 7 This is a structural schematic diagram of a natural gas dehydration device according to the present invention when the clean box is full of water.

[0028] Figure 8 This is a schematic diagram of the installation structure of a telescopic spring of a natural gas dehydration device of the present invention.

[0029] Figure 9 This is a schematic diagram of the internal structure of a water discharge pipe of a natural gas dehydration device of the present invention.

[0030] Figure 10 This is a schematic diagram of the pressure spring structure of a natural gas dehydration device of the present invention.

[0031] Figure 11 This is a schematic diagram of the internal structure of a limiting chute of a natural gas dehydration device of the present invention.

[0032] Figure 12 This is a schematic diagram of the back structure of a natural gas dehydration device of the present invention.

[0033] Figure 13 The figure is a schematic structural diagram of a solvent dehydration mechanism of a natural gas dehydration device according to the present invention.

[0034] Figure 14 This is a schematic diagram of the internal structure of an automatic gas outlet pipe of a natural gas dehydration device of the present invention.

[0035] Figure 15 This is a schematic diagram of the installation structure of a stirring rod of a natural gas dehydration device of the present invention.

[0036] Description of reference numerals:

[0037] 1. Sealed dehydration box; 2. Air inlet pipe; 3. Connector; 4. Air inlet valve; 5. Cooling box; 6. Water pump; 7. Water pump pipe; 8. Drain pipe; 9. Water guide pipe; 10. Flow guide pipe; 11. Condensation and dehydration mechanism; 1101. Cooling plate; 1102. Water storage tank; 1103. Water guide sleeve; 1104. Moving piston; 1105. Return spring; 1106. Water inlet; 1107. Drain port; 1108. Water exchange hole; 1109. Circulating pump; 1110. Circulating pipe; 1111. Water supply pipe; 12. Drip pipe; 13. Cleaning mechanism; 1301. Cleaning box; 1302. Water storage tank; 1303. Limit slider; 1304. Mounting frame; 1305. Telescopic spring; 1306. Plastic sleeve; 1307. Mounting plate; 1308. Limit Shaft; 1309, limit plate; 1310, drain pipe; 1311, water trough; 1312, drain trough; 1313, waterproof cover; 1314, lifting piston; 1315, drain rod; 1316, pressure spring; 1317, limit slide; 1318, slider sensor; 1319, electromagnet; 14, solvent tube; 15, solvent valve; 16, solvent dehydration mechanism; 1601, solvent tank; 1602, liquid level sensor; 1603, automatic air outlet pipe; 1604, stop valve; 1605, piston disc; 1606, adjusting spring; 1607, air inlet chamber; 1608, air outlet chamber; 1609, vent pipe; 1610, drive motor; 1611, motor drive shaft; 1612, stirring rod; 17, air outlet straight pipe; 18, pressure gauge. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs; the terms used in the description of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the description, claims and accompanying drawings of the present invention are intended to cover non-exclusive inclusions.

[0040] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] The directional words appearing in the following description are all directions shown in the drawings and are not intended to limit the specific structure of the present invention. For example, in the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt, or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or a snap connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0044] The present invention provides Figures 1-15A natural gas dehydration device shown in the figure includes a sealed dehydration box 1, a cooling box 5 is installed at one end of the sealed dehydration box 1, a water pump 6 is installed at the top of the cooling box 5, a water pump 6 is installed on one side of the water pump 6, a drain pipe 8 is installed at the end of the water pump 6 away from the water pump 7, one end of the drain pipe 8 is connected to a water pipe 9, a flow pipe 10 is installed at the bottom end of the water pipe 9, a condensation and dehydration mechanism 11 is connected to the bottom end of the flow pipe 10, a drip pipe 12 is also installed at the bottom end of the water pipe 9, a water guide sleeve 1103 is installed at the bottom end of the cooling plate 1101, a cleaning mechanism 13 is installed at both ends of the cooling plate 1101, and a cleaning box 1301 is installed at both ends of the cooling plate 1101. A drain pipe 1310 is installed at the bottom, a water trough 1311 is provided at the top of the drain pipe 1310, a drainage trough 1312 is provided at the bottom of the water trough 1311, a solvent pipe 14 is installed at the top of the sealed dehydration box 1, a solvent valve 15 is installed at the top of the solvent pipe 14, a solvent dehydration mechanism 16 is installed at the top of the sealed dehydration box 1, an air outlet straight pipe 17 is installed at one end of the sealed dehydration box 1, and a pressure gauge 18 is provided at the bottom end of the solvent pipe 14. When the present invention is used, the natural gas delivery pipeline is connected to the joint 3, and then the air inlet valve 4 is opened, and the natural gas to be dehydrated is introduced into the interior of the sealed dehydration box 1 through the air inlet pipe 2 to perform the natural gas dehydration operation, and the water pump 6 is opened so that the water pump 7 pumps the cold water inside the cooling box 5 out of the water. Out to the drain pipe 8, the cold water is transported to the inside of the water pipe 9 through the drain pipe 8, and then enters the water storage tank 1102 inside the five groups of cooling plates 1101 through the guide pipe 10, and then enters the natural gas inside the sealed dehydration box 1 through the air inlet pipe 2. Because the density is lower than that of the air, the natural gas will float upward. After the natural gas passes through the five groups of cooling plates 1101, the natural gas is quickly cooled. After the water in the natural gas condenses, it will adhere to the outer wall of the five groups of cooling plates 1101 or fall into the bottom of the sealed dehydration box 1. At the same time, in the process of using the five groups of cooling plates 1101 for cooling and dehydration, the water pump 6 will continuously pump the cold water in the cooling box 5 out to the inside of the water pipe 9, and continuously inject new cold water into the water storage tank 1102 through the guide pipe 10. Under the water pressure, the movable piston 1104 at the top of the water guide sleeve 1103 will move downward under the action of the water pressure until the movable piston 1104 moves to the bottom of the water inlet 1106. At this time, the water inside the water storage tank 1102 will flow to the drain outlet 1107 through the water inlet 1106, and then be discharged to the bottom of the sealed dehydration box 1 through the water exchange through hole 1108. The water discharged from the bottom of the sealed dehydration box 1 through the water exchange through hole 1108 is pumped back to the cooling box 5 through the circulating pump 1109 for cooling treatment, so that the temperature inside the water storage tank 1102 is in a constant temperature state. During the process of cooling and dehydrating the natural gas by the cooling plate 1101, most of the water in the natural gas will condense and adhere to the outer wall of the five groups of cooling plates 1101.If the water on the outer wall of the cooling plate 1101 is not cleaned for a long time, the cooling effect of the cooling plate 1101 will be reduced, thereby reducing the dehydration quality of the natural gas. When using this device, after the water pump 6 draws the cold water in the cooling box 5 into the inside of the water pipe 9, part of the cold water will slowly drip into the water storage tank 1302 at the top of the cleaning box 1301 through the drip pipe 12. In the process of slowly increasing the cold water in the water storage tank 1302, the weight of the cleaning box 1301 will also increase, which will cause the cleaning box 1301 to move downward slowly. Since one side of the cleaning box 1301 is in contact with the cooling plate 1101, the water droplets attached to the cooling plate 1101 will be dropped into the cleaning box 1301 during the downward movement of the cleaning box 1301. The cleaning operation of the outer wall of the cooling plate 1101 is completed by scraping it down, and at the same time, when the cleaning box 1301 moves downward, the limit sliders 1303 at both ends of the cleaning box 1301 will also slide downward along the limit slide groove 1317 opened on the inner wall of the sealed dehydration box 1 until the limit slider 1303 moves to the slider sensor 1318. At this time, the electromagnet 1319 is energized. Since the limit slider 1303 contains iron, the electromagnet 1319 will adsorb the limit slider 1303. At this time, the drain rod 1315 will be inserted from the bottom into the drain pipe 1310. The lifting piston 1314 will be pushed upward to the top of the drain groove 1312 through the drain rod 1315. At this time, the water inside the water storage tank 1302 will pass through the drain pipe 1310. The water tank 1311 flows to the drainage tank 1312, and then is discharged through the bottom end of the drain pipe 1310, thereby releasing the water inside the water tank 1302. The speed at which the water in the water tank 1302 is released is faster than the water dripping rate of the drip pipe 12. Therefore, when the water inside the water tank 1302 is discharged through the drain pipe 1310, the cleaning box 1301 will be lifted up again under the action of the telescopic spring 1305. In the process of the cleaning box 1301 being lifted up, the water droplets attached to the outer wall of the cooling plate 1101 can be cleaned again, so that the cleaning effect of the cooling plate 1101 is better. The natural gas that has been dehydrated for the first time by the cooling plate 1101 will gather at the top of the cooling plate 1101. As it continues to be injected into the sealed dehydration box 1 The natural gas is introduced, which increases the air pressure inside the sealed dehydration box 1, so that the natural gas gathered at the top of the cooling plate 1101 will push up the piston disc 1605 until the piston disc 1605 is pushed up to the top of the air inlet bin 1607. At this time, the natural gas will enter the air outlet bin 1608 through the air inlet bin 1607, and then be discharged from the vent pipe 1609 to the solvent box 1601 through the stop valve 1604. Before this, the solvent discharge pipe is connected to the solvent pipe 14, and the solvent that can react with water in the natural gas is introduced into the interior of the solvent box 1601 by controlling the solvent valve 15. When the natural gas enters the interior of the solvent box 1601 through the vent pipe 1609, the two sets of drive motors 1610 are turned on.The motor drive shaft 1611 drives the stirring rod 1612 to rotate, thereby stirring the solvent to react with the water in the natural gas, making the natural gas dehydrated more thoroughly.

[0045] When this solution is in use, the natural gas that needs to be dehydrated is introduced into the interior of the sealed dehydration box 1 through the air inlet pipe 2. An air inlet pipe 2 is installed at one end of the sealed dehydration box 1, and a joint 3 is installed at one end of the air inlet pipe 2. An air inlet valve 4 is installed at the top of the air inlet pipe 2. The natural gas dehydration operation is performed by connecting the natural gas transmission pipeline to the joint 3 and then opening the air inlet valve 4 to introduce the natural gas that needs to be dehydrated into the interior of the sealed dehydration box 1 through the air inlet pipe 2.

[0046] In the present invention, when dehydrating natural gas, the first dehydration operation is performed through the condensation dehydration mechanism 11. The condensation dehydration mechanism 11 includes a water storage tank 1102 opened inside the cooling plate 1101, a movable piston 1104 is installed on the top of the water guide sleeve 1103, and a return spring 1105 is installed on the bottom of the movable piston 1104. The inner wall of the water guide sleeve 1103 is provided with a water inlet 1106, and the bottom end of the water inlet 1106 is provided with a drain outlet 1107. The bottom end of the water guide sleeve 1103 is provided with a water exchange through hole 1108, and the dehydration box is sealed. 1 is installed on the back of the cooling box 5. A circulation pump 1109 is installed on one end of the circulation pump 1109. A circulation pipe 1110 is installed on one end of the circulation pipe 1110. A water supply pipe 1111 is installed on one end of the circulation pipe 1110. By turning on the water pump 6, the water supply pipe 7 draws the cold water inside the cooling box 5 into the drain pipe 8. The cold water is then transported to the inside of the water guide pipe 9 through the drain pipe 8. Then, the cold water enters the water storage tank 1102 inside the five groups of cooling plates 1101 through the guide pipe 10, and then enters the natural gas inside the sealed dehydration box 1 through the air inlet pipe 2. Because the density is lower than that of air, it will float upwards. After the natural gas passes through the five sets of cooling plates 1101, it will cool down quickly. The water in the natural gas will condense and adhere to the outer wall of the five sets of cooling plates 1101 or fall into the bottom of the sealed dehydration box 1. At the same time, during the cooling and dehydration process using the five sets of cooling plates 1101, the water pump 6 will continuously pump the cold water in the cooling box 5 into the inside of the water guide pipe 9, and continuously inject new cold water into the water storage tank 1102 through the guide pipe 10. Under the water pressure of continuous water injection, the water guide sleeve 110 The movable piston 1104 at the top moves downward under the action of water pressure until it moves to the bottom of the water inlet 1106. At this time, the water in the water storage tank 1102 flows through the water inlet 1106 to the drain outlet 1107, and is discharged to the bottom of the sealed dehydration box 1 through the water exchange through hole 1108. The water discharged from the bottom of the sealed dehydration box 1 through the water exchange through hole 1108 is pumped back to the inside of the cooling box 5 by the circulating pump 1109 for cooling, so that the temperature inside the water storage tank 1102 is kept constant.

[0047] When cleaning the water droplets attached to the outer wall of the cooling plate 1101, the present invention performs a cleaning operation through the cleaning mechanism 13. The cleaning mechanism 13 includes a water storage tank 1302 opened in the cleaning box 1301, and limit sliders 1303 are installed at both ends of the cleaning box 1301. Both ends of the bottom of the cleaning box 1301 are installed with telescopic springs 1305. The outer wall of the telescopic spring 1305 is sleeved with a plastic sleeve 1306. Both ends of the telescopic spring 1305 are connected with a mounting plate 1307. The bottom end of the cleaning box 1301 is fixed with a limit shaft 1308, and the bottom end of the limit shaft 1308 is installed with a limit plate 1309. The bottom end of the cooling plate 1101 is fixed with a mounting frame 1304, and the inside of the drain pipe 1310 is installed with a pressure spring 1316. , the bottom end of the pressure spring 1316 is connected to the lifting piston 1314, the top of the mounting frame 1304 is installed with a drain rod 1315, the outer wall of the pressure spring 1316 is installed with a waterproof cover 1313, the bottom end of the cooling plate 1101 is fixed with the mounting frame 1304, the inside of the drain pipe 1310 is installed with a pressure spring 1316, the bottom end of the pressure spring 1316 is connected to the lifting piston 1314, the top of the mounting frame 1304 is installed with a drain rod 1315, and the outer wall of the pressure spring 1316 is installed with a waterproof cover 1313. During the cooling and dehydration operation of the cooling plate 1101 on the natural gas, most of the water in the natural gas will condense and adhere to the outer wall of the five groups of cooling plates 1101. If the cooling plates 1101 are not cooled for a long time, the water in the natural gas will condense and adhere to the outer wall of the five groups of cooling plates 1101. 1. When the water on the outer wall is cleaned, the cooling effect of the cooling plate 1101 will be reduced, thereby reducing the dehydration quality of the natural gas. When using this device, after the water pump 6 pumps the cold water in the cooling box 5 into the inside of the water pipe 9, part of the cold water will slowly drip into the water storage tank 1302 at the top of the cleaning box 1301 through the drip pipe 12. As the cold water in the water storage tank 1302 gradually increases, the weight of the cleaning box 1301 will also increase, which will cause the cleaning box 1301 to move downward slowly. Since one side of the cleaning box 1301 is in contact with the cooling plate 1101, the water droplets attached to the cooling plate 1101 will be scraped off during the downward movement of the cleaning box 1301, thereby completing the dehydration of the cooling plate 1101. 101 outer wall cleaning operation, while the cleaning box 1301 moves downward, the limit sliders 1303 at both ends of the cleaning box 1301 will also slide downward along the limit slide grooves 1317 opened on the inner wall of the sealed dehydration box 1 until the limit slider 1303 moves to the slider sensor 1318, at this time, the electromagnet 1319 is energized, because the limit slider 1303 contains iron, so that the electromagnet 1319 adsorbs the limit slider 1303, at this time the drain rod 1315 will be inserted from the bottom into the drain pipe 1310, and the lifting piston 1314 will be pushed up to the top of the drain groove 1312 through the drain rod 1315, at this time the water in the water storage tank 1302 will flow to the drain groove 1312 through the water groove 1311,The water is then discharged through the bottom end of the drain pipe 1310, thereby releasing the water in the water tank 1302. The speed at which the water in the water tank 1302 is released is faster than the water droplet flow rate of the drip pipe 12. Therefore, when the water in the water tank 1302 is completely drained through the drain pipe 1310, the cleaning box 1301 will be lifted up again under the action of the telescopic spring 1305. During the lifting process of the cleaning box 1301, the water droplets attached to the outer wall of the cooling plate 1101 can be cleaned again, making the cleaning effect of the cooling plate 1101 better.

[0048] It should be noted that the magnetic force of the electromagnet 1319 can adsorb the limit slider 1303, and the elastic force of the telescopic spring 1305 can lift the cleaning box 1301 when it is adsorbed by the electromagnet 1319 and there is a small amount of water in the water tank 1302. Therefore, when the water in the water tank 1302 flows out to an appropriate amount, the telescopic spring 1305 will lift the cleaning box 1301. During the process of being lifted up, the cleaning box 1301 will pass through the slider sensor 1318 again, and the electromagnet 1319 will be stopped from being energized. At the same time, the outer walls of the telescopic spring 1305 and the pressure spring 1316 are respectively installed with a plastic sleeve 1306 and a waterproof sleeve 1313, so that the telescopic spring 1305 and the pressure spring 1316 will not come into contact with water, thereby avoiding the telescopic spring 1305 and the pressure spring 1316 from rusting due to water and affecting their use, thereby increasing their service life.

[0049] In this solution, after the first dehydration operation of natural gas, a second dehydration operation is performed through a solvent dehydration mechanism 16. The solvent dehydration mechanism 16 includes a solvent box 1601 opened at the top of the sealed dehydration box 1, a liquid level sensor 1602 is installed inside the solvent box 1601, an automatic air outlet pipe 1603 is installed at the bottom of the solvent box 1601, a stop valve 1604 is installed at the top of the automatic air outlet pipe 1603, and a piston disc 1605 is installed at the bottom of the automatic air outlet pipe 1603. 5 is installed at the top of the automatic air outlet pipe 1603, an air inlet bin 1607 is opened on the inner wall of the air inlet bin 1607, an air outlet bin 1608 is installed on the top of the stop valve 1604, a vent pipe 1609 is installed on the top of the sealed dehydration box 1, a driving motor 1610 is installed on one end of the driving motor 1610, and a stirring rod 1612 is installed on the outer wall of the motor driving shaft 1611. Natural gas will gather at the top of the cooling plate 1101. As natural gas continues to be injected into the sealed dehydration box 1, the air pressure inside the sealed dehydration box 1 increases, so that the natural gas gathered at the top of the cooling plate 1101 will push up the piston disk 1605 until the piston disk 1605 is pushed up to the top of the air inlet bin 1607. At this time, the natural gas will enter the air outlet bin 1608 through the air inlet bin 1607, and then be discharged from the vent pipe 1609 to the solvent tank 1601 through the stop valve 1604. Before this, the solvent discharge pipe is connected to the solvent pipe 14, and the solvent that can react with water in the natural gas is introduced into the solvent tank 1601 by controlling the solvent valve 15. When the natural gas enters the solvent tank 1601 through the vent pipe 1609, the two sets of drive motors 1610 are turned on, so that the motor drive shaft 1611 drives the stirring rod 1612 to rotate, thereby stirring the solvent to react with the water in the natural gas, making the natural gas dehydration more thorough.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A natural gas dehydration device, comprising a sealed dehydration box (1), characterized in that: A cooling box (5) is installed at one end of the sealed dehydration box (1), a water pump (6) is installed at the top of the cooling box (5), a water pump (7) is installed on one side of the water pump (6), a drain pipe (8) is installed at one end of the water pump (6) away from the water pump pipe (7), one end of the drain pipe (8) is connected to a water guide pipe (9), a flow guide pipe (10) is installed at the bottom end of the water guide pipe (9), a condensation dehydration mechanism (11) is connected at the bottom end of the flow guide pipe (10), a cooling plate (1101) is connected at the bottom end of the water guide pipe (9), a drip pipe (12) is also installed at the bottom end of the cooling plate (1101), a water guide sleeve (1103) is installed at the bottom end of the cooling plate (1101), and the cooling plate (11 01) are installed with cleaning mechanisms (13) at both ends of the cooling plate (1101), cleaning boxes (1301) are installed at both ends of the cooling plate (1101), a drain pipe (1310) is installed at the bottom end of the cleaning box (1301), a water trough (1311) is provided at the top end of the drain pipe (1310), a drainage trough (1312) is provided at the bottom end of the water trough (1311), a solvent pipe (14) is installed at the top end of the sealed dehydration box (1), a solvent valve (15) is installed at the top end of the solvent pipe (14), a solvent dehydration mechanism (16) is installed at the top end of the sealed dehydration box (1), an air outlet straight pipe (17) is installed at one end of the sealed dehydration box (1), and a pressure gauge (18) is provided at the bottom end of the solvent pipe (14).

2. A natural gas dehydration device according to claim 1, characterized in that: An air inlet pipe (2) is installed at one end of the sealed dehydration box (1), a joint (3) is installed at one end of the air inlet pipe (2), and an air inlet valve (4) is installed at the top end of the air inlet pipe (2).

3. The natural gas dehydration device according to claim 1, characterized in that: The condensation and dehydration mechanism (11) includes a water storage tank (1102) opened inside the cooling plate (1101), a movable piston (1104) is installed at the top end of the water guide sleeve (1103), a return spring (1105) is installed at the bottom end of the movable piston (1104), a water inlet (1106) is opened on the inner wall of the water guide sleeve (1103), a drain outlet (1107) is opened at the bottom end of the water inlet (1106), and a water exchange hole (1108) is opened at the bottom end of the water guide sleeve (1103).

4. A natural gas dehydration device according to claim 1, characterized in that: A circulation pump (1109) is installed on the back of the sealed dehydration box (1), a circulation pipe (1110) is installed at one end of the circulation pump (1109), and a water supply pipe (1111) is installed at one end of the circulation pipe (1110) of the circulation pump (1109).

5. The natural gas dehydration device according to claim 1, characterized in that: The cleaning mechanism (13) comprises a water storage tank (1302) provided inside a cleaning box (1301); limit sliders (1303) are installed at both ends of the cleaning box (1301); telescopic springs (1305) are installed at both ends of the bottom of the cleaning box (1301); a plastic sleeve (1306) is sleeved on the outer wall of the telescopic spring (1305); both ends of the telescopic spring (1305) are connected to a mounting plate (1307); a limit shaft (1308) is fixed at the bottom end of the cleaning box (1301); and a limit plate (1309) is installed at the bottom end of the limit shaft (1308).

6. The natural gas dehydration device according to claim 1, characterized in that: A mounting bracket (1304) is fixed to the bottom end of the cooling plate (1101), a pressure spring (1316) is installed inside the drain pipe (1310), the bottom end of the pressure spring (1316) is connected to a lifting piston (1314), a drain rod (1315) is installed at the top end of the mounting bracket (1304), and a waterproof sleeve (1313) is installed on the outer wall of the pressure spring (1316).

7. The natural gas dehydration device according to claim 1, characterized in that: The inner wall of the sealed dehydration box (1) is provided with a limiting slide groove (1317), the bottom end of the limiting slide groove (1317) is provided with a slider sensor (1318), and the bottom end of the slider sensor (1318) is provided with an electromagnet (1319).

8. The natural gas dehydration device according to claim 1, characterized in that: The solvent dehydration mechanism (16) includes a solvent box (1601) opened at the top of the sealed dehydration box (1), a liquid level sensor (1602) is installed inside the solvent box (1601), and an automatic air outlet pipe (1603) is installed at the bottom of the solvent box (1601).

9. A natural gas dehydration device according to claim 8, characterized in that: A stop valve (1604) is installed at the top of the automatic air outlet pipe (1603), a piston disc (1605) is installed at the bottom of the automatic air outlet pipe (1603), an adjustment spring (1606) is installed at the top of the piston disc (1605), an air inlet bin (1607) is opened on the inner wall of the automatic air outlet pipe (1603), an air outlet bin (1608) is installed at the top of the air inlet bin (1607), and a vent pipe (1609) is installed at the top of the stop valve (1604).

10. The natural gas dehydration device according to claim 1, characterized in that: A driving motor (1610) is installed at the top of the sealed dehydration box (1), a motor driving shaft (1611) is installed at one end of the driving motor (1610), and a stirring rod (1612) is installed on the outer wall of the motor driving shaft (1611).

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