CNG (compressed natural gas) emptying gas recovery device

Abstract

The utility model discloses a CNG (compressed natural gas) emptying gas recovery device, which relates to the technical field of gas recovery, and comprises a device main body, a gas storage chamber and a recovery chamber are respectively arranged on two sides in the device main body, a bottom cavity is arranged below the recovery chamber, the top of the recovery chamber is movably connected with a connecting component, and the inside of the recovery chamber is fixedly connected with a bracket. A first pump body mechanism is fixedly connected to the support, and a water retaining assembly is connected to the bottom of the first pump body mechanism in a matched mode. The effect of facilitating sliding adjustment of the adjusting frame plate along the inner side of the adjusting frame plate is achieved through the mounting frame, meanwhile, angle adjustment can be conveniently conducted through the mounting frame arranged in an overturning mode according to the connecting requirement, the effect of arranging and fixing the connecting pipelines is achieved through the guide plate, and the effect of adjusting the height according to the connecting requirement is achieved through the adjusting frame plate; and the effect of connecting with an external pipeline is achieved through the connecting seat.

Description

Technical Field

[0001] The utility model relates to the field of gas recovery, in particular to a CNG vent gas recovery device. Background Art

[0002] CNG (Compressed Natural Gas) refers to natural gas compressed to a pressure greater than or equal to 10 MPa and not greater than 25 MPa. It is a form of natural gas that is pressurized and stored in a gaseous state in a container. At most natural gas supply stations, when overhauling or maintaining equipment, it is necessary to vent and recover the natural gas in the pipeline through a venting and recovery device.

[0003] When using the existing CNG venting gas recovery device, it can only operate after connecting the external pipeline to the intake pipe or intake assembly therein. However, the position height of the intake pipe or intake assembly therein is fixed, while the height of the external natural gas pipeline is different. Therefore, when performing the natural gas venting operation, the staff needs to select equipment of appropriate size according to the different heights of the external natural gas pipeline, which requires the configuration of multiple sets of different equipment, thereby increasing unnecessary production costs; at the same time, during the recovery process, the water content in CNG increases as the pressure drops, and the existing venting recovery device cannot well guarantee the water content of CNG during the recovery process.

[0004] Therefore, the utility model proposes a CNG vent gas recovery device. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a CNG vent gas recovery device, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a CNG vented gas recovery device, comprising a device body, a gas storage chamber and a recovery chamber are respectively opened on both sides of the interior of the device body, a bottom cavity is opened below the recovery chamber, a connecting assembly is movably connected to the top of the recovery chamber, a bracket is fixedly connected to the interior of the recovery chamber, a first pump body mechanism is fixedly connected to the bracket, and a water retaining assembly is matched with the bottom of the first pump body mechanism;

[0007] The water retaining assembly includes an outer sealing sleeve and an inner flat tube, and the connecting assembly includes a mounting frame and an adjusting frame plate and a guide plate inside the mounting frame. The surface of the adjusting frame plate is fixedly connected to a connecting seat, and a partition is fixedly connected to one side of the inner side of the air storage chamber. A compartment is provided on one side of the partition, and the interior of the compartment is fixedly connected to a second pump body mechanism.

[0008] As a further technical solution of the present invention, multiple groups of first pump body mechanisms are arranged horizontally along the surface of the bracket, the top and bottom of the first pump body mechanisms are equipped with recovery pipes, and pipe openings are opened on the surface of the bracket.

[0009] As a further technical solution of the present invention, the water retaining assembly is vertically arranged as a whole, the inner flat tube is spirally arranged inside the outer sealing sleeve, and a connecting pipe is matched between its top and the first pump body mechanism.

[0010] As a further technical solution of the present invention, the bottom cavity is arranged as a trapezoidal cavity, located on the inner side of the device body, and its outer side is connected to a sewage pipe, and a valve pipe is arranged between one side of the bottom cavity and the second pump body mechanism.

[0011] As a further technical solution of the present invention, two groups of mounting frames are arranged in a "Z" shape relative to each other, one end of which is connected to the device body by flipping between the shaft body, and a sliding groove is provided on the inner surface of the mounting frame corresponding to the adjustment frame plate, the guide plate and the adjustment frame plate are arranged adjacent to each other, and multiple groups of arc-shaped pipe clamps are arranged longitudinally on the surface of the guide plate.

[0012] As a further technical solution of the present invention, the outer end of the adjusting frame plate slides and is embedded in the sliding groove on the inner side of the mounting frame. The connecting seats are arranged in multiple groups longitudinally along the surface of the adjusting frame plate as a whole, and the connecting seats are arranged in the form of columnar protrusions, and a gas supply connection head is provided on its surface.

[0013] The utility model provides a CNG vent gas recovery device, which has the following beneficial effects compared with the existing technology:

[0014] 1. This design of a CNG vent gas recovery device achieves the effect of supporting and arranging the first pump body mechanism and the recovery pipeline provided at its bottom through a bracket, achieves the effect of transporting recovered gas and removing moisture through an inner flat tube, and achieves the effect of temporarily storing and recovering the moisture separated in the water retaining component through a bottom cavity.

[0015] 2. A CNG vented gas recovery device designed in this invention has an effect of facilitating sliding adjustment of the frame plate along its inner side through the mounting frame. At the same time, the flip-up mounting frame facilitates angle adjustment according to connection requirements. The guide plate is used to arrange and fix the connecting pipes. The height of the frame plate is adjusted according to connection requirements. The connecting seat is used to connect to the external pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural front view of a CNG vent gas recovery device;

[0017] Figure 2 A CNG vent gas recovery device Figure 1 A magnified view of the structure at center A;

[0018] Figure 3 A schematic diagram of the connection of a water retaining assembly of a CNG vent gas recovery device;

[0019] Figure 4 The figure is a schematic diagram of the connection components of a CNG vent gas recovery device.

[0020] In the figure: 1. Device body; 2. Air storage chamber; 3. Partition; 4. Compartment; 5. Recovery chamber; 6. Connecting assembly; 7. Bracket; 8. First pump body mechanism; 9. Water retaining assembly; 10. Bottom cavity; 11. Second pump body mechanism; 12. Outer sealing sleeve; 13. Inner flat tube; 14. Mounting frame; 15. Adjusting frame plate; 16. Guide plate; 17. Connecting seat. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The utility model provides a technical solution for a CNG vented gas recovery device: it includes a device main body 1, a gas storage chamber 2 and a recovery chamber 5 are respectively opened on both sides of the interior of the device main body 1, a bottom cavity 10 is opened below the recovery chamber 5, a connecting assembly 6 is movably connected to the top of the recovery chamber 5, a bracket 7 is fixedly connected to the interior of the recovery chamber 5, a first pump body mechanism 8 is fixedly connected to the bracket 7, a water retaining assembly 9 is matched with the bottom of the first pump body mechanism 8, the water retaining assembly 9 includes a sleeved outer sealing sleeve 12 and an inner flat tube 13, the connecting assembly 6 includes a mounting frame 14 and an adjusting frame plate 15 and a guide plate 16 on the inner side thereof, a connecting seat 17 is fixedly connected to the surface of the adjusting frame plate 15, a partition 3 is fixedly connected to the inner side of the gas storage chamber 2, a compartment 4 is provided on one side of the partition 3, and a second pump body mechanism 11 is fixedly connected to the interior of the compartment 4.

[0023] like Figure 1-3As shown, multiple groups of first pump body mechanisms 8 are arranged horizontally along the surface of the bracket 7. The top and bottom of the first pump body mechanism 8 are equipped with recovery pipes, and the surface of the bracket 7 is provided with pipe openings. The water retaining assembly 9 is arranged vertically as a whole. The inner flat tube 13 is spirally arranged inside the outer sealing sleeve 12, and a connecting pipe is provided between its top and the first pump body mechanism 8. The bracket 7 is used to support and arrange the first pump body mechanism 8 and the recovery pipe provided at its bottom, and the inner flat tube 13 is used to transport the recovered gas and remove moisture.

[0024] The external vent gas enters the water retaining assembly 9 through the recovery pipe provided on the top of the first pump body mechanism 8. During the transportation process, the vent gas flows through the spiral channel in the inner flat tube 13 and continuously changes direction in the spiral channel, so that the moisture entrained in the vent gas is separated from the gas under gravity operation, thereby removing moisture.

[0025] like Figure 1-2 As shown, the bottom cavity 10 is arranged in a trapezoidal chamber and is located on one side of the interior of the device body 1. A sewage pipe is connected to the outside thereof. A valve pipe is arranged between one side of the bottom cavity 10 and the second pump body mechanism 11. The bottom cavity 10 is used to temporarily store and recover the water separated in the water retaining component 9.

[0026] like Figure 4 As shown, the mounting bracket 14 is provided with two groups in a "Z" shape, one end of which is connected to the device body 1 by flipping over, and the inner surface of the mounting bracket 14 is provided with a sliding groove corresponding to the adjusting frame plate 15, and the guide plate 16 and the adjusting frame plate 15 are arranged adjacent to each other, and multiple groups of arc-shaped pipe clamps are arranged longitudinally on the surface of the guide plate 16, and the outer end of the adjusting frame plate 15 slides and is embedded in the sliding groove on the inner side of the mounting bracket 14, and the connecting seat 17 is arranged in multiple groups longitudinally along the surface of the adjusting frame plate 15 as a whole, and the connecting seat 17 is provided with a columnar protrusion, and a gas transmission connection head is provided on the surface of the mounting bracket 14, so that the adjusting frame plate 15 can be adjusted along its inner side for sliding adjustment. At the same time, the flipped mounting bracket 14 is convenient for angle adjustment according to connection requirements, and the guide plate 16 is used to arrange and fix the connecting pipes, and the height adjustment according to connection requirements is achieved through the adjusting frame plate 15, and the connection seat 17 is used to connect to the external pipeline.

[0027] The working principle of the present utility model is as follows: when the device is in use, the pipelines matching the first pump body mechanism 8 and the second pump body mechanism 11 are connected, and the pipeline on the top of the first pump body mechanism 8 is arranged and fixed through the guide plate 16 and connected to the connecting seat 17. Then, the mounting frame 14 is flipped according to the height of the external pipeline, and then the adjustment frame plate 15 is slid to adjust the height of the pipeline connected to the adjustment frame plate 15 and the connecting seat 17 so that it is connected to the external pipeline. Then, the first pump body mechanism 8 is started, and the external pipeline is drawn to vent gas, and the gas enters the water retaining assembly 9 to remove moisture. The second pump body mechanism 11 is started to draw gas into the gas storage chamber 2, and the moisture is concentrated in the bottom cavity 10.

[0028] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A CNG vent gas recovery device, characterized by: The invention comprises a device body (1), wherein an air storage chamber (2) and a recovery chamber (5) are respectively provided on both sides of the interior of the device body (1), a bottom cavity (10) is provided below the recovery chamber (5), a connecting assembly (6) is movably connected to the top of the recovery chamber (5), a bracket (7) is fixedly connected to the interior of the recovery chamber (5), a first pump body mechanism (8) is fixedly connected to the bracket (7), and a water retaining assembly (9) is matched and connected to the bottom of the first pump body mechanism (8); The water retaining assembly (9) includes a sleeved outer sealing sleeve (12) and an inner flat tube (13); the connecting assembly (6) includes a mounting frame (14) and an adjusting frame plate (15) and a guide plate (16) on the inner side thereof; the surface of the adjusting frame plate (15) is fixedly connected to a connecting seat (17); a partition (3) is fixedly connected to one side of the interior of the air storage chamber (2); a compartment (4) is provided on one side of the partition (3); and the interior of the compartment (4) is fixedly connected to a second pump body mechanism (11).

2. A CNG vent gas recovery device according to claim 1, characterized in that: The first pump body mechanisms (8) are arranged in multiple groups transversely along the surface of the bracket (7), the top and bottom of the first pump body mechanisms (8) are both equipped with recovery pipes, and the surface of the bracket (7) is provided with pipe openings.

3. The CNG vent gas recovery device according to claim 1, characterized in that: The water retaining assembly (9) is vertically arranged as a whole, and the inner flat tube (13) is spirally arranged inside the outer sealing sleeve (12), with a connecting pipe being provided between the top of the inner flat tube and the first pump body mechanism (8).

4. The CNG vent gas recovery device according to claim 1, characterized in that: The bottom chamber (10) is arranged in a trapezoidal chamber and is located on one side of the interior of the device body (1). A sewage discharge pipe is connected to the outside of the bottom chamber (10). A valve pipe is arranged between one side of the bottom chamber (10) and the second pump body mechanism (11).

5. The CNG vent gas recovery device according to claim 1, characterized in that: The mounting frame (14) is provided with two groups in a "Z" shape, one end of which is connected to the device body (1) by a flipping shaft, and a sliding groove is provided on the inner surface of the mounting frame (14) corresponding to the adjustment frame plate (15). The guide plate (16) and the adjustment frame plate (15) are arranged adjacent to each other, and a plurality of arc-shaped pipe clamps are arranged longitudinally on the surface of the guide plate (16).

6. The CNG vent gas recovery device according to claim 1, characterized in that: The outer end of the adjustment frame plate (15) is slidably embedded in the sliding groove on the inner side of the mounting frame (14), and the connecting seats (17) are arranged in multiple groups longitudinally along the surface of the adjustment frame plate (15). The connecting seats (17) are arranged in a columnar protrusion, and a gas transmission connector is provided on the surface.

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