Gas component analysis device for natural gas extraction

Abstract

The utility model relates to the field of natural gas component analysis, in particular to a natural gas extraction gas component analysis device which comprises a gas chromatograph main body, a box door is mounted on the outer side of the gas chromatograph main body through a hinge, a control computer is arranged on the side face of the gas chromatograph main body, and a placing frame is fixedly mounted on the upper side of the control computer. A cover plate is mounted on the upper surface of the gas chromatograph main body through a hinge, a fixed frame I is fixedly mounted on the inner wall of the cover plate, a fixed frame II is arranged on the side surface of the fixed frame I, a soft sleeve is fixedly connected outside the fixed frame I and the fixed frame II, and the end part of the soft sleeve is connected with the gas chromatograph main body; according to the device, natural gas in two groups of gas bags can be subjected to component analysis at the same time, the threaded connection holes of the first fixing frame and the second fixing frame are provided with threads, the pressing blocks and the second electric push rods are arranged in the threaded connection holes, and after openings of the gas bags are inserted into the threaded connection holes, the pressing blocks are pushed by the second electric push rods to press inwards; and the opening of the air bag is pressed.

Description

Technical Field

[0001] This utility model relates to the field of natural gas composition analysis, and in particular to a device for analyzing the composition of natural gas extracted gas. Background Technology

[0002] Currently, the gas composition produced during natural gas extraction is extremely complex. In addition to the main component methane, it also contains various hydrocarbons such as ethane and propane, as well as a variety of impurity gases such as carbon dioxide, nitrogen, hydrogen sulfide, and water vapor. If the gas composition cannot be accurately and promptly determined during the extraction process, the extraction equipment may be frequently damaged due to the increased corrosiveness of the gas, increasing maintenance costs and the risk of production stoppage. Therefore, real-time and accurate analysis of the gas composition during natural gas extraction has become an urgent need to ensure the stable and efficient operation of the entire extraction industry chain.

[0003] Currently, the compositional analysis of natural gas extracted is mostly done using traditional laboratory analytical methods, such as gas chromatography. The gas chromatograph is used to detect and analyze the gas composition. Generally, natural gas is loaded into a gas bag, which is then fixed to the interface of the gas chromatograph. The gas bag is then squeezed to send the natural gas into the gas chromatograph for detection and analysis.

[0004] However, existing natural gas extraction gas composition analysis devices cannot simultaneously detect two groups of natural gas components, and cannot conduct comparative analysis, resulting in inaccurate test results. Furthermore, it is not very convenient to fix the gas bag in place. Utility Model Content

[0005] To overcome the problems of existing natural gas extraction gas composition analysis devices being unable to simultaneously detect two groups of natural gas components, making comparative analysis impossible and resulting in inaccurate test results, and also being inconvenient to fix the gas bags.

[0006] The technical solution of this utility model is as follows: a gas composition analysis device for natural gas extraction, comprising a gas chromatograph main body, a door hinged to the outer side of the gas chromatograph main body, a control computer mounted on the side of the gas chromatograph main body, a placement frame fixedly mounted on the upper side of the control computer, a cover plate hinged to the upper surface of the gas chromatograph main body, a fixing bracket one fixedly mounted on the inner wall of the cover plate, a fixing bracket two fixedly mounted on the side of the fixing bracket one, and a flexible sleeve fixedly connected to the outside of the fixing bracket one and the fixing bracket two, the end of the flexible sleeve being connected to the gas chromatograph main body. The connection includes a lifting frame installed inside the first and second fixed frames, with a display screen fixedly installed on the outside of the lifting frame. Each set of lifting frames has an electric push rod on each side. The movable end of the electric push rod is fixedly connected to a connecting rod, and the upper end of the connecting rod is fixedly connected to a connecting seat. The inner side of the connecting seat is fixedly installed on both sides of the lifting frame. The bottom of the first and second fixed frames has threaded connection holes. The inner walls of the threaded connection holes are respectively provided with pressure blocks. The ends of the pressure blocks are fixedly connected to the second electric push rod, which is fixedly installed inside the first and second fixed frames.

[0007] Preferably, the threaded connection holes of the first and second fixing brackets are threaded, and a pressure block and an electric push rod are installed inside the threaded connection holes. When the opening of the gas bag is inserted into the threaded connection hole, the electric push rod pushes the pressure block inward to cooperate with the thread of the threaded connection hole to press the opening of the gas bag, thereby squeezing the two sets of gas bags at the same time and delivering natural gas through the soft sleeve to the component analysis box of the gas chromatograph body for the detection of the two sets of gases.

[0008] Preferably, the first and second fixing frames are symmetrically distributed from left to right, and the surfaces of the first and second fixing frames are provided with sliding grooves corresponding to the lifting frame.

[0009] Preferably, the bottom of the flexible sleeve is provided with a uniformly distributed filter screen, which is fixedly installed at the connection between the gas chromatograph body and the flexible sleeve.

[0010] Preferably, the gas chromatograph body has an internal storage compartment located inside the cabinet door.

[0011] Preferably, the gas chromatograph body has an exhaust port on its outer side and a groove on its outer side.

[0012] Preferably, a component analysis box is provided on the upper side of the storage compartment, and a filter cartridge is fixedly installed between the lower end of the component analysis box and the exhaust port. A filter element is installed inside the filter cartridge. The component analysis box is provided with two non-communicating compartments and a detection mechanism. The filter cartridge is connected to the component analysis box through a three-way valve.

[0013] Preferably, a handle is fixed to the upper surface of the cover plate, and a stop bar is fixedly installed on the side of the cover plate near the hinge.

[0014] The beneficial effects of this utility model are:

[0015] This natural gas extraction gas composition analysis device, through the installation of a first and a second fixing frame, can simultaneously analyze the composition of natural gas in two sets of gas bags. The threaded connection holes of the first and second fixing frames are threaded, and pressure blocks and electric push rods are installed inside the threaded connection holes. When the opening of the gas bag is inserted into the threaded connection hole, the electric push rod pushes the pressure block inward, which, in conjunction with the threads of the threaded connection hole, presses the opening of the gas bag closed, thereby simultaneously squeezing the two sets of gas bags and transporting the natural gas through a flexible sleeve to the composition analysis box of the gas chromatograph body for detection of the two gas samples. The average value of the two results is then taken for greater accuracy. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of the gas composition analysis device for natural gas extraction according to this utility model. Figure 1 ;

[0017] Figure 2 The diagram shown is a schematic representation of the overall structure of the gas composition analysis device for natural gas extraction according to this utility model. Figure 2 ;

[0018] Figure 3 The diagram shown is a schematic representation of the overall structure of the gas composition analysis device for natural gas extraction according to this utility model. Figure 3 ;

[0019] Figure 4 This invention relates to a gas composition analysis device for natural gas extraction. Figure 1 Enlarged view of point A.

[0020] Explanation of reference numerals in the attached drawings: 1. Gas chromatograph body; 101. Groove; 102. Exhaust port; 2. Door; 3. Control computer; 4. Placement frame; 5. Fixing bracket one; 51. Threaded connection hole; 52. Pressure block; 6. Fixing bracket two; 7. Lifting frame; 8. Display screen; 9. Cover plate; 91. Stop bar; 92. Handle; 10. Soft sleeve; 11. Electric push rod one; 12. Connecting seat; 13. Connecting rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4This utility model provides an embodiment of a natural gas extraction gas component analysis device, including a gas chromatograph body 1. A door 2 is hinged to the outside of the gas chromatograph body 1. A control computer 3 is located on the side of the gas chromatograph body 1. A placement frame 4 is fixedly installed on the upper side of the control computer 3. A cover plate 9 is hinged to the upper surface of the gas chromatograph body 1. A first fixing frame 5 is fixedly installed on the inner wall of the cover plate 9. A second fixing frame 6 is located on the side of the first fixing frame 5. A flexible sleeve 10 is fixedly connected to the outside of the first fixing frame 5 and the second fixing frame 6. The end of the flexible sleeve 10 is connected to the gas chromatograph body 1. A lifting frame 7 is installed inside the first fixing frame 5 and the second fixing frame 6. A display screen 8 is fixedly installed on the outside of the lifting frame 7. Electric... The electric push rod 11 can drive the lifting frame 7 to move upward, thereby exposing the threaded connection hole 51. The movable end of the electric push rod 11 is fixedly connected to the connecting rod 13, and the upper end of the connecting rod 13 is fixedly installed with the connecting seat 12. The inner side of the connecting seat 12 is fixedly installed on both sides of the lifting frame 7. The bottom of the fixing frame 1 5 and the fixing frame 2 6 are provided with threaded connection holes 51. The inner walls of the threaded connection holes 51 are respectively provided with pressure blocks 52. The end of the pressure block 52 is fixedly connected to the electric push rod 2. The electric push rod 2 is fixedly installed inside the fixing frame 1 5 and the fixing frame 2 6. The electric push rod 2 can push the pressure block 52 to move inward, thereby clamping the opening of the air bag, so that the air bag and the threaded connection hole 51 are tightly fitted together, preventing air leakage during subsequent testing.

[0023] Please see Figures 2-3 The mounting brackets 5 and 6 are symmetrically distributed from left to right. The surfaces of the mounting brackets 5 and 6 have grooves corresponding to the lifting frame 7. A uniformly distributed filter screen is installed at the bottom of the flexible sleeve 10, and the filter screen is fixedly installed at the connection between the gas chromatograph body 1 and the flexible sleeve 10. A storage compartment is provided inside the gas chromatograph body 1, located inside the door 2. An exhaust port 102 is provided on the outside of the gas chromatograph body 1, and a groove 101 is provided on the outside of the gas chromatograph body 1. A component analysis box is located on the upper side of the storage compartment. A filter cartridge is fixedly installed between the lower end of the box and the exhaust port 102. The filter cartridge contains a filter element, which is used to filter natural gas to prevent the emitted natural gas from polluting the environment. The component analysis box is equipped with two non-communicating compartments and a detection mechanism. The filter cartridge is connected to the component analysis box through a three-way valve. A handle 92 is fixedly attached to the upper surface of the cover plate 9. A stop bar 91 is fixedly installed on the side of the cover plate 9 near the hinge. By setting the stop bar 91, the entire cover plate 9 can be erected. A limiting structure can be added to the outside of the stop bar 91 to prevent the cover plate 9 from falling downwards when it is in the vertical position.

[0024] When working, first hold handle 92 and flip cover 9 to a vertical position. Then open electric push rod 11 and adjust lifting frame 7 to the highest position so that threaded connection hole 51 is exposed. Then fix the gas bag in threaded connection hole 51 of fixing bracket 1 5 and fixing bracket 2 6 respectively, and open electric push rod 2 to push pressure block 52 inward and clamp the opening of gas bag. Then open component analysis box and display screen 8 in gas chromatograph body 1 through control computer 3, and open electric push rod 11 to slightly loosen the opening of gas bag. Then squeeze gas bag at the same time to deliver natural gas to component analysis box through soft sleeve 10.

[0025] Through the above steps, by setting up fixing frame 5 and fixing frame 6, the natural gas in two sets of gas bags can be analyzed simultaneously. The threaded connection holes 51 of fixing frame 5 and fixing frame 6 are threaded, and pressure block 52 and electric push rod 2 are set inside the threaded connection holes 51. When the opening of the gas bag is inserted into the threaded connection hole 51, the electric push rod 2 pushes the pressure block 52 inward, which cooperates with the thread of the threaded connection hole 51 to press the opening of the gas bag, thereby squeezing the two sets of gas bags at the same time, and transporting the natural gas through the soft sleeve 10 to the component analysis box of the gas chromatograph body 1 for the detection of the two sets of gases. This solves the problem that the existing natural gas extraction gas component analysis device cannot simultaneously detect the components of two sets of natural gas gases, cannot compare and analyze them, resulting in inaccurate detection results, and the gas bags are not easy to fix.

Claims

1. A gas composition analysis device for natural gas extraction, comprising a gas chromatograph body (1), characterized in that: A door (2) is installed on the outside of the gas chromatograph body (1) via a hinge. A control computer (3) is installed on the side of the gas chromatograph body (1). A placement frame (4) is fixedly installed on the upper side of the control computer (3). A cover plate (9) is installed on the upper surface of the gas chromatograph body (1) via a hinge. A mounting bracket (5) is fixedly installed on the inner wall of the cover plate (9). A mounting bracket (6) is installed on the side of the mounting bracket (5). A soft sleeve (10) is fixedly connected to the outside of the mounting bracket (5) and the mounting bracket (6). The end of the soft sleeve (10) is connected to the gas chromatograph body (1). A lifting frame is installed inside the mounting bracket (5) and the mounting bracket (6). 7) A display screen (8) is fixedly installed on the outside of the lifting frame (7). Each lifting frame (7) is provided with an electric push rod (11) on both sides. The movable end of the electric push rod (11) is fixedly connected to a connecting rod (13). The upper end of the connecting rod (13) is fixedly installed with a connecting seat (12). The inner side of the connecting seat (12) is fixedly installed on both sides of the lifting frame (7). The bottom of the fixed frame (5) and the fixed frame (6) is provided with a threaded connection hole (51). The inner walls of the threaded connection hole (51) are provided with pressure blocks (52) on both sides. The end of the pressure block (52) is fixedly connected to an electric push rod (2). The electric push rod (2) is fixedly installed inside the fixed frame (5) and the fixed frame (6).

2. The natural gas extraction gas composition analysis device according to claim 1, characterized in that: The first fixed frame (5) and the second fixed frame (6) are symmetrically distributed on the left and right. The surfaces of the first fixed frame (5) and the second fixed frame (6) are provided with sliding grooves corresponding to the lifting frame (7).

3. The natural gas extraction gas composition analysis device according to claim 1, characterized in that: The bottom of the flexible sleeve (10) is provided with a uniformly distributed filter screen, which is fixedly installed at the connection between the gas chromatograph body (1) and the flexible sleeve (10).

4. The natural gas extraction gas composition analysis device according to claim 1, characterized in that: The main body (1) of the gas chromatograph has a storage compartment inside, which is located inside the door (2).

5. The natural gas extraction gas composition analysis device according to claim 4, characterized in that: The gas chromatograph body (1) has an exhaust port (102) on the outside and a groove (101) on the outside.

6. The natural gas extraction gas composition analysis device according to claim 5, characterized in that: A component analysis box is provided on the upper side of the storage compartment. A filter cartridge is fixedly installed between the lower end of the component analysis box and the vent (102). A filter element is provided inside the filter cartridge.

7. The natural gas extraction gas composition analysis device according to claim 1, characterized in that: A handle (92) is fixedly attached to the upper surface of the cover plate (9), and a stop bar (91) is fixedly installed on the side of the cover plate (9) near the hinge.

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