A natural gas pretreatment skid-mounted module for a natural gas liquefaction plant

Abstract

The application discloses a natural gas pretreatment prying module of a natural gas liquefaction device and relates to the technical field of natural gas pretreatment devices. The natural gas pretreatment prying module specifically comprises a bottom plate, a middle plate and a top plate. The bottom plate and the middle plate are fixedly connected with a support rod A. The middle plate and the top plate are fixedly connected with a support rod B. The opposite surfaces of the bottom plate and the middle plate and the opposite surfaces of the middle plate and the top plate are provided with sliding grooves. The sliding grooves are internally connected with movable frame structures in a sliding mode. The top plate and the middle plate are provided with track grooves at the top. The fixed rod, the track groove, the rotating structure and the rotating rod are arranged, so that the natural gas pretreatment prying module has the advantages of small occupied area and convenient maintenance. The natural gas liquefaction device has many devices, so that the device occupies a large area, is not used reasonably and is difficult to move when fixedly installed in the prior art, thereby resulting in the problems of difficult maintenance and repair of the natural gas liquefaction device.

Description

TECHNICAL FIELD

[0001] The application relates to a natural gas pretreatment device, in particular to a natural gas pretreatment pry-mounted module of a natural gas liquefaction device. BACKGROUND

[0002] The natural gas liquefaction device is a complete set of equipment composed of various equipment systems, and comprises a natural gas pretreatment process, a liquefaction process, a storage system, a control system and a fire extinguishing system, wherein the most important one is the liquefaction process, and the liquefaction device is used in the liquefaction process, and the liquefaction device adopts a cascade liquefaction process.

[0003] The existing conventional natural gas pretreatment pry-mounted module has many problems, the equipment of the natural gas liquefaction device is relatively large, the equipment occupies a large area, the utilization is not reasonable, and the existing installation mode is fixed installation, so that the equipment is difficult to move, thereby causing great difficulty in maintenance and repair of the natural gas liquefaction device, and causing dissatisfaction in actual use. SUMMARY

[0004] The application aims to provide a natural gas pretreatment pry-mounted module of a natural gas liquefaction device to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0006] A natural gas pretreatment pry-mounted module of a natural gas liquefaction device, comprising a bottom plate, a middle plate and a top plate, support rods A are fixedly connected between the bottom plate and the middle plate, support rods B are fixedly connected between the middle plate and the top plate, sliding grooves are formed in opposite surfaces of the bottom plate and the middle plate and opposite surfaces of the middle plate and the top plate, movable frame structures are slidably connected in the sliding grooves, rail grooves are formed in the top of the top plate and the middle plate, sliding rods are movably connected in the rail grooves, damping structures are fixedly connected to the top of the sliding rods, fixed plates are fixedly connected to the top of the damping structures, movable insertion rod structures are arranged on the left side of the fixed plates, insertion grooves are formed in the left side of the fixed plates, the movable insertion rod structures are movably inserted into the insertion grooves, rotating structures are fixedly connected to the top of the fixed plates at the middle positions, rotating plates are fixedly connected to the top of the rotating structures, clamping grooves are formed in the top of the rotating plates, fixed structures are clamped in the clamping grooves, the fixed structures are arranged above the movable insertion rod structures, deacidification towers are fixedly connected to the left side of the bottom plate, the middle plate and the top plate, natural gas compression filters, deacidification front heat exchangers, liquid particle filters, deacidification rear heat exchangers and dehydrated impurity filters are fixedly connected to the top of the rotating plates.

[0007] As a further scheme of the application, the movable frame structure comprises horizontal cross rods and vertical cross rods, the horizontal cross rods and the vertical cross rods are fixed to each other, and the horizontal cross rods are movably connected in the sliding grooves.

[0008] As a further solution of the present invention: the vibration damping structure includes a movable rod, a fixed cylinder and a spring, the spring and the movable rod are movably connected to the inside of the fixed cylinder, the fixed cylinder is fixedly connected to the top of the sliding rod, the spring is movably connected to the bottom of the movable rod, and the bottom of the movable rod is fixedly connected to the bottom of the fixed plate.

[0009] As a further solution of the present invention: the movable insertion rod structure includes an insertion rod and a movable groove, the movable groove is opened on the left side of the fixed plate, and the insertion rod is movably connected inside the movable groove.

[0010] As a further solution of the present invention: the rotating structure includes a fixed ring, a spherical groove, a movable ball and a limiting ring, the fixed ring is fixedly connected to the top of the fixed plate, the spherical groove is opened at the top of the fixed ring, the movable ball is movably connected to the inside of the spherical groove, the movable ball is movably connected to the bottom of the rotating plate, the limiting ring is fixedly connected to the bottom of the rotating plate, and the limiting ring is movably connected to the side of the fixed ring.

[0011] As a further solution of the present invention: the fixing structure includes a clip, a threaded rod and a threaded tube, the clip is clipped into the inside of the slot, the threaded rod is fixedly connected to the end of the clip away from the slot, and the threaded tube is threadedly sleeved on the surface of the threaded rod.

[0012] As a further solution of the present invention: the post-deacidification heat exchanger is located on the left side of the post-dehydration impurity filter, the liquid particle filter is located on the left side of the post-deacidification heat exchanger, the pre-deacidification heat exchanger and the natural gas pressing filter are both located on top of the liquid particle filter, the post-deacidification heat exchanger and the post-dehydration impurity filter, and the pre-deacidification heat exchanger is located on the left side of the natural gas pressing filter.

[0013] As a further solution of the present invention:

[0014] Here’s how to do it:

[0015] Step 1: First, install the natural gas pressing filter, the heat exchanger before deacidification, the deacidification tower, the liquid particle filter, the heat exchanger after deacidification, and the impurity filter after dehydration on the rotating plate, and then connect the natural gas pressing filter, the heat exchanger before deacidification, the deacidification tower, the liquid particle filter, the heat exchanger after deacidification, and the impurity filter after dehydration through connecting pipes to clear them;

[0016] Step 2: When the entire setup needs to be maintained, the fixed plate is pulled forward, so that the fixed plate drives the vibration reduction structure and the sliding rod to move forward inside the track groove, so that the fixed plate connection is stable. When the fixed plate moves forward, the fixed equipment is also driven to move forward through the rotating structure and the rotating plate. When the fixed plate and the rotating plate move, the movable frame structure also moves forward, so that a set of equipment can be removed from between the bottom plate, the middle plate and the top plate for repair and maintenance;

[0017] Step 3. When a single device needs to be repaired and maintained, first move the movable rod structure to the left to separate it from the slot, and then rotate the fixed structure to separate it from the slot, so that the single fixed plate and rotating plate can be movable, and then remove the connecting pipe, and then move the fixed plate toward the front to drive the vibration reduction structure and the sliding rod to move toward the front inside the track groove, and then the fixed plate moves toward the front while driving the rotating plate and the rotating structure to move toward the front together, so that the single device fixed on the rotating plate can be moved out for repair and maintenance, and the rotating plate can drive the removed device to rotate through the rotating structure, thereby increasing the convenience of maintenance. After the operation is completed, follow the above steps in reverse to restore each device to its original position.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By arranging a fixed rod, a track groove, a rotating structure and a rotating rod, and moving the fixed plate, the fixed plate drives the sliding rod to move inside the track groove through the vibration reduction structure, so that the fixed plate drives the equipment at that position to be moved out through the rotating structure and the rotating plate, so that it can be repaired and maintained. The rotation of the rotating structure drives the rotating plate to rotate, and the rotation of the rotating plate drives the equipment thereon to rotate, which increases the convenience of maintenance. The two-layer arrangement reduces the floor space, achieves the effect of small floor space and easy maintenance, and solves the problem that the natural gas liquefaction device has a large number of equipment, which makes the equipment installation occupy a large area and is not used reasonably. In addition, the existing installation method is fixed installation, and the equipment is difficult to move, which makes the repair and maintenance of the natural gas liquefaction device difficult.

[0020] By setting a fixed structure and a movable plug-in rod structure, the fixed structure connects and pulls the two rotating plates, making the rotating plate not easy to rotate and the connection stable. The movable plug-in rod structure connects the two fixed plates, connecting the adjacent fixed plates so that a single fixed plate is not easy to move out, thereby achieving the effect of connecting the fixed plate and the rotating plate to make them stable.

[0021] By setting up a vibration reduction structure, when the equipment on the rotating plate is working, the vibration is transmitted to the vibration structure through the rotating plate, the rotating structure and the fixed plate, so that the vibration is reduced by the vibration structure, making the equipment work stably and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front cross-sectional view of a natural gas pre-treatment skid-mounted module of a natural gas liquefaction plant;

[0023] Figure 2 A natural gas pre-treatment skid-mounted module for a natural gas liquefaction plant Figure 1 A magnified view of the structure at center A;

[0024] Figure 3 This is a left-side cross-sectional view of the vibration reduction structure in a natural gas pre-processing skid-mounted module of a natural gas liquefaction plant;

[0025] Figure 4 This is a schematic diagram of the overall structure of the rotating plate and rotating structure in a natural gas pretreatment skid-mounted module of a natural gas liquefaction device.

[0026] As shown in the figure: 1. Bottom plate; 2. Middle plate; 3. Top plate; 4. Support rod A; 5. Support rod B; 6. Slide groove; 7. Movable frame structure; 71. Horizontal crossbar; 72. Vertical crossbar; 8. Track groove; 9. Sliding rod; 10. Vibration reduction structure; 101. Movable rod; 102. Fixed cylinder; 103. Spring; 11. Fixed plate; 12. Movable rod structure; 121. Rod; 122. Movable groove; 13. Slot; 14 , rotating structure; 141, fixed ring; 142, spherical groove; 143, movable ball; 144, limiting ring; 15, rotating plate; 16, slot; 17, fixed structure; 171, buckle; 172, threaded rod; 173, threaded pipe; 18, deacidification tower; 19, natural gas pressing filter; 20, heat exchanger before deacidification; 21, liquid particle filter; 22, heat exchanger after deacidification; 23, impurity filter after dehydration. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1 to 4In an embodiment of the present invention, a natural gas pretreatment skid-mounted module for a natural gas liquefaction device includes a bottom plate 1, a middle plate 2, and a top plate 3. A support rod A4 is fixedly connected between the bottom plate 1 and the middle plate 2. The support rod A4 is located on the back and near both sides of the bottom plate 1 and the middle plate 2 to connect the two. The purpose is to facilitate the setting of the structure on the bottom plate 1 so that the support rod A4 is not easily blocked from its normal operation. A support rod B5 is fixedly connected between the middle plate 2 and the top plate 3, and its function is the same as that of the support rod B5. The opposing surfaces of the bottom plate 1 and the middle plate 2, and the opposing surfaces of the middle plate 2 and the top plate 3 are both provided with a slide groove 6, and the interior of the slide groove 6 is slidably connected to a movable frame structure. 7. The slides are respectively opened at the three-divided positions opposite to the bottom plate 1 and the middle plate 2, so that the bottom plate 1 and the middle plate 2 are divided into three areas, each area is installed with corresponding equipment, and the movable frame structure 7 slides inside the slide 6 and supports the middle plate 2. The movable frame structure 7 includes a horizontal cross bar 71 and a vertical cross bar 72. The horizontal cross bar 71 and the vertical cross bar 72 are fixed to each other at the ends to form a square structure. The horizontal cross bar 71 is movably connected to the inside of the slide 6. By pulling the vertical cross bar 72, the horizontal cross bar 71 can be driven to slide inside the slide 6. When the movable frame structure 7 is pulled to the front, the vertical cross bar 72 close to the back supports the middle plate 2.

[0029] The top of the top plate 3 and the middle plate 2 are both provided with a track groove 8, which is similar in shape to the word "convex" to make the sliding connection stable. The internal movable connection of the track groove 8 is provided with a sliding rod 9. The positive cross-section of the sliding rod 9 is elliptical, and the shape and size of the track groove 8 are also the same. This arrangement facilitates the sliding rod 9 to slide inside it. The top of the sliding rod 9 is fixedly connected with a vibration reduction structure 10, which includes a movable rod 101, a fixed cylinder 102 and a spring 103. The vibration reduction structure 10 is provided with several pieces, all of which connect the fixed plate 11 and the sliding rod 9 to enhance the vibration reduction. In order to achieve the vibration effect, the spring 103 and the movable rod 101 are movably connected to the inside of the fixed cylinder 102, the fixed cylinder 102 is fixedly connected to the top of the sliding rod 9, the spring 103 is movably connected to the bottom of the movable rod 101, and the bottom of the movable rod 101 is fixedly connected to the bottom of the fixed plate 11. The vibration of the equipment reaches the movable rod 101 through the rotating plate 15, the rotating structure 14 and the fixed plate 11, and then the movable rod 101 transfers the vibration to the spring 103 for vibration reduction, thereby reducing the vibration, reducing noise, and increasing the service life of the equipment.

[0030] The top of the damping structure 10 is fixedly connected with a fixed plate 11, in order to place the fixed plate 11 sliding, a positioning bolt is arranged at the top of the rotating plate 11 close to the front position, the positioning bolt positions the fixed plate 11, so that the fixed plate 11 can be stably positioned on the bottom plate 1 and the middle plate 2 when not in use, a movable plug rod structure 12 for connection is arranged on the left side of the fixed plate 11, the movable plug rod structure 12 comprises a plug rod 121 and a movable groove 122, the movable groove 122 is opened on the left side of the fixed plate 11, the plug rod 121 is movably connected in the inside of the movable groove 122, a moving groove is also arranged on the front of the fixed plate 11, a connecting rod is arranged on the front of the plug rod 121, the plug rod 121 is moved by manually moving the connecting rod, so that the plug rod 121 can be connected and separated from the plug groove 13 by manual control.

[0031] The left side of the fixed plate 11 is provided with a plug groove 13 corresponding to the movable rod structure 12, the movable plug rod structure 12 is movably inserted in the inside of the plug groove 13, the position of the insertion is that the movable plug rod structure 12 on the fixed plate 11 is clamped with the clamping groove 13 on the adjacent another fixed plate 11, a rotating structure 14 is fixedly connected at the top of the middle position of the fixed plate 11, the rotating structure 14 comprises a fixed ring 141, a ball-shaped groove 142 for positioning, a movable ball 143 for rolling and two limiting rings 144, the fixed ring 141 is fixedly connected at the top of the fixed plate 11, the ball-shaped groove 142 is opened at the top of the fixed ring 141, the ball-shaped groove 142 is provided with a plurality of equidistant positions on the fixed ring 41, which facilitates the rotation of the rotating plate 15, the movable ball 143 is movably connected in the inside of the ball-shaped groove 142, the ball-shaped groove 142 positions the movable ball 143, the two movable balls 143 are movably connected at the bottom of the rotating plate 15, the two limiting rings 144 are fixedly connected at the bottom of the rotating plate 15, the two limiting rings 144 are movably connected on the outside and the inside of the fixed ring 141, which enhances the rotating stability, when rotating, the rotating plate 15 drives the limiting ring 144 to rotate, the self-rotation of the rotating plate 15 drives the movable ball 143 to rotate in the inside of the ball-shaped groove 142, so as to realize the free rotation of the rotating plate 15, the limiting ring 15 positions the rotation, which prevents unstable rotation.

[0032] The top of the rotating structure 14 is fixedly connected to a rotating plate 15, and a slot 16 is provided on the top of the rotating plate 15. A fixed and stable fixing structure 17 is connected to the inside of the slot 16. The fixing structure 17 is located above the movable plug-in structure 12 to stabilize the rotating plate 15. The fixing structure 17 includes two buckles 171, two threaded rods 172 and a threaded tube 173 for controlling the threaded rod 172. The buckle 171 is connected to the inside of the slot 16, and the threaded rod 172 is fixedly connected to the buckle 171 away from the slot. At one end of 16, the threaded tube 173 is threadedly sleeved on the surface of the threaded rod 172. The surface of the threaded tube 173 is provided with an anti-slip layer, and the threaded tube 173 is in the shape of a hexagonal prism, which is convenient for rotation by a wrench, so that the connection between the two rotating plates 15 is more stable and not easy to rotate by itself. When in use, the buckle 171 is placed inside the slot 16, and the threaded tube 173 is rotated to make the two threaded rods 172 move closer to and away from each other, so that the threaded rod 172 can drive the two buckles 171 to be clamped, tightened and loosened inside the slot 16.

[0033] The left sides of the bottom plate 1, the middle plate 2 and the top plate 3 are all fixedly connected with a deacidification tower 18, and the top of the rotating plate 15 is respectively fixedly connected with a natural gas pressing filter 19, a pre-deacidification heat exchanger 20, a liquid particle filter 21, a post-deacidification heat exchanger 22 and a post-dehydration impurity filter 23. These devices are fixed to the rotating plate 15 by fixing bolts. The post-deacidification heat exchanger 22 is located on the left side of the post-dehydration impurity filter 23, and the liquid particle filter 21 is located on the left side of the post-deacidification heat exchanger 22. The pre-deacidification heat exchanger 20 and the natural gas pressing filter 19 are both located on top of the liquid particle filter 21, the post-deacidification heat exchanger 22 and the post-dehydration impurity filter 23. The pre-deacidification heat exchanger 20 is located on the left side of the natural gas pressing filter 19. All movable structures on the device are lubricated.

[0034] The operation method is as follows:

[0035] Step 1: First, install the natural gas pressing filter 19, the pre-deacidification heat exchanger 20, the deacidification tower 18, the liquid particle filter 21, the post-deacidification heat exchanger 22, and the post-dehydration impurity filter 23 on the rotating plate 15, and then connect the natural gas pressing filter 19, the pre-deacidification heat exchanger 20, the deacidification tower 18, the liquid particle filter 21, the post-deacidification heat exchanger 22, and the post-dehydration impurity filter 23 through connecting pipes to clear them;

[0036] Step 2: When the entire setup needs to be maintained, the fixed plate 11 is pulled toward the front, so that the fixed plate 11 drives the vibration reduction structure 10 and the sliding rod 9 to move toward the front inside the track groove 8, so that the fixed plate 11 is connected stably. When the fixed plate 11 moves toward the front, it also drives the fixed equipment to move toward the front through the rotating structure 14 and the rotating plate 15. When the fixed plate 11 and the rotating plate 15 move, the movable frame structure 7 also moves toward the front, so that a set of equipment can be removed from between the bottom plate 1, the middle plate 2 and the top plate 3 for repair and maintenance;

[0037] Step 3. When a single device needs to be repaired and maintained, first move the movable rod structure 12 to the left to separate it from the slot 13, and then rotate the fixed structure 17 to separate it from the slot 16, so that the single fixed plate 11 and the rotating plate 15 are movable, and then remove the connecting pipe, and then move the fixed plate 11 toward the front to drive the vibration reduction structure 10 and the sliding rod 9 to move toward the front inside the track groove 8, and then the fixed plate 11 moves toward the front while driving the rotating plate 15 and the rotating structure 14 to move toward the front together, so that the single device fixed on the rotating plate 15 can be moved out for repair and maintenance, and the rotating plate 15 can drive the removed device to rotate through the rotating structure 14, thereby increasing the convenience of maintenance. After the operation is completed, follow the above steps in reverse to restore each device to its original position.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention, and any contents not described in detail in this specification shall belong to the prior art known to professional and technical personnel in this field.

Claims

1. A natural gas pretreatment skid-mounted module for a natural gas liquefaction plant, comprising a bottom plate (1), a middle plate (2) and a top plate (3), characterized in that: A support rod A (4) is fixedly connected between the bottom plate (1) and the middle plate (2), a support rod B (5) is fixedly connected between the middle plate (2) and the top plate (3), a slide groove (6) is provided on the opposite surfaces of the bottom plate (1) and the middle plate (2), and a movable frame structure (7) is slidably connected inside the slide groove (6), a track groove (8) is provided on the top of the top plate (3) and the middle plate (2), a sliding rod (9) is movably connected inside the track groove (8), a vibration reduction structure (10) is fixedly connected to the top of the sliding rod (9), a fixed plate (11) is fixedly connected to the top of the vibration reduction structure (10), a movable plug-in structure (12) is provided on the left side of the fixed plate (11), a slot (13) is provided on the left side of the fixed plate (11), and a movable frame structure (10) is fixedly connected to the top of the sliding rod (9). The movable rod structure (12) is movably inserted into the interior of the slot (13); the top of the fixed plate (11) is fixedly connected to a rotating structure (14) at a middle position; the top of the rotating structure (14) is fixedly connected to a rotating plate (15); a slot (16) is provided on the top of the rotating plate (15); a fixed structure (17) is clamped inside the slot (16); the fixed structure (17) is located above the movable rod structure (12); the left sides of the bottom plate (1), the middle plate (2) and the top plate (3) are all fixedly connected to a deacidification tower (18); the top of the rotating plate (15) is respectively fixedly connected to a natural gas pressing filter (19), a heat exchanger before deacidification (20), a liquid particle filter (21), a heat exchanger after deacidification (22) and an impurity filter after dehydration (23); The vibration reduction structure (10) comprises a movable rod (101), a fixed cylinder (102) and a spring (103); the spring (103) and the movable rod (101) are both movably connected inside the fixed cylinder (102); the fixed cylinder (102) is fixedly connected to the top of the sliding rod (9); the spring (103) is movably connected to the bottom of the movable rod (101); and the bottom of the movable rod (101) is fixedly connected to the bottom of the fixed plate (11).

2. The natural gas pretreatment skid-mounted module for a natural gas liquefaction plant according to claim 1, characterized in that: The movable frame structure (7) includes a horizontal crossbar (71) and a vertical crossbar (72). The horizontal crossbar (71) and the vertical crossbar (72) are fixed to each other at their ends, and the horizontal crossbar (71) is movably connected to the inside of the slide groove (6).

3. The natural gas pretreatment skid-mounted module for a natural gas liquefaction plant according to claim 1, characterized in that: The movable insertion rod structure (12) comprises an insertion rod (121) and a movable groove (122). The movable groove (122) is opened on the left side of the fixed plate (11), and the insertion rod (121) is movably connected inside the movable groove (122).

4. The natural gas pretreatment skid-mounted module for a natural gas liquefaction plant according to claim 1, characterized in that: The rotating structure (14) comprises a fixed ring (141), a ball groove (142), a movable ball (143) and a limiting ring (144), wherein the fixed ring (141) is fixedly connected to the top of the fixed plate (11), the ball groove (142) is opened at the top of the fixed ring (141), the movable ball (143) is movably connected inside the ball groove (142), the movable ball (143) is movably connected to the bottom of the rotating plate (15), the limiting ring (144) is fixedly connected to the bottom of the rotating plate (15), and the limiting ring (144) is movably connected to the side of the fixed ring (141).

5. The natural gas pretreatment skid-mounted module for a natural gas liquefaction plant according to claim 1, characterized in that: The fixing structure (17) comprises a buckle (171), a threaded rod (172) and a threaded tube (173); the buckle (171) is clamped inside the clamping slot (16); the threaded rod (172) is fixedly connected to an end of the buckle (171) away from the clamping slot (16); and the threaded tube (173) is threadedly sleeved on the surface of the threaded rod (172).

6. The natural gas pretreatment skid-mounted module for a natural gas liquefaction plant according to claim 1, characterized in that: The post-deacidification heat exchanger (22) is located on the left side of the post-dehydration impurity filter (23), the liquid particle filter (21) is located on the left side of the post-deacidification heat exchanger (22), the pre-deacidification heat exchanger (20) and the natural gas pressing filter (19) are both located on top of the liquid particle filter (21), the post-deacidification heat exchanger (22) and the post-dehydration impurity filter (23), and the pre-deacidification heat exchanger (20) is located on the left side of the natural gas pressing filter (19).

7. The method for operating a natural gas pretreatment skid-mounted module of a natural gas liquefaction plant according to claim 1, characterized in that: The operation method is as follows: Step 1: First, press the natural gas filter (19), the heat exchanger before deacidification (20), the deacidification tower (18), the liquid particles The filter (21), the heat exchanger after deacidification (22) and the impurity filter after dehydration (23) are installed on the rotating plate (15), and then the natural gas pressing filter (19), the heat exchanger before deacidification (20), the deacidification tower (18), the liquid particle filter (21), the heat exchanger after deacidification (22) and the impurity filter after dehydration (23) are connected through connecting pipes to clear them; Step 2: When the overall setting needs to be maintained, the fixed plate (11) is pulled toward the front, so that the fixed plate (11) drives the vibration reduction structure (10) and the sliding rod (9) to move toward the front inside the track groove (8), so that the fixed plate (11) is connected stably. When the fixed plate (11) moves toward the front, it also drives the fixed equipment to move toward the front through the rotating structure (14) and the rotating plate (15). When the fixed plate (11) and the rotating plate (15) move, the movable frame structure (7) also moves toward the front, so that a set of equipment is moved out from between the bottom plate (1), the middle plate (2) and the top plate (3) for repair and maintenance; Step 3: When a single device needs to be repaired and maintained, first move the movable rod structure (12) to the left to separate it from the slot (13), then rotate the fixed structure (17) to separate it from the card slot (16), so that the single fixed plate (11) and the rotating plate (15) are movable, and then remove the connecting pipe, and then move the fixed plate (11) toward the front to drive the vibration reduction structure (10) and the sliding rod (9) to move toward the front inside the track groove (8), and then the fixed plate (11) moves toward the front while driving the rotating plate (15) and the rotating structure (14) to move toward the front together, so that the single device fixed on the rotating plate (15) can be moved out for repair and maintenance, and the rotating plate (15) can drive the removed device to rotate through the rotating structure (14).

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