Carrier gas sampling device for oil-gas chromatographic analysis

Abstract

The utility model provides an oil-gas chromatographic analysis carrier gas sampling device and relates to the field of chromatographic analysis. The oil-gas chromatographic analysis carrier gas sampling device comprises a mounting plate, the surface of the mounting plate is fixedly connected with a controller, the surface of the mounting plate is provided with a sampling mechanism, the sampling mechanism comprises a sampling cylinder, a push plate and a fixed base, the fixed base is fixedly connected with the mounting plate, the surface of the mounting plate is provided with a power mechanism, and the power mechanism is fixedly connected with the controller. The power mechanism comprises a movable frame, and a control mechanism is arranged at the output end of the sample injection barrel. According to the oil-gas chromatographic analysis carrier gas sampling device, the controller and the control equipment are linked, gas in the sampling cylinder is pushed out through the push plate, the sampling cylinder is fixed and positioned through the fixed base, so that the sampling cylinder operates stably, the push plate is controlled to move through the movable frame, gas is uniformly sampled, and the gas inlet pipe and the sampling cylinder are connected through the connecting cover. And air output by the sample introduction cylinder is introduced into detection equipment through the air inlet pipe.

Description

Technical Field

[0001] The utility model relates to a gas chromatographic analysis sampling device for oil and gas, specifically a carrier gas sampling device for gas chromatographic analysis of oil and gas, belonging to the technical field of chromatographic analysis. Background Technique

[0002] Chromatographic analysis refers to a method of separation and analysis based on the difference in the distribution coefficient of substances between the stationary phase and the mobile phase. It can be divided into liquid chromatography, gas chromatography, supercritical fluid chromatography, etc. according to the molecular aggregation state of the mobile phase. According to the separation principle, it can be divided into many categories such as adsorption, distribution, steric exclusion, ion exchange, affinity, and chiral chromatography. According to the operation principle, it can be divided into column chromatography and planar chromatography. Chromatography has become one of the most widely used and most pharmacopoeia-listed analytical methods.

[0003] The utility model with the patent number CN219162076U relates to a carrier gas sampling device for gas chromatographic analysis of transformer insulation oil and gas, including a sampler, and a quantitative component is arranged on the sampler; the quantitative component includes a first fixing plate, and two support plates with an L-shaped cross-section are arranged at the bottom of the first fixing plate. A placement space is formed between the support plate and the first fixing plate, and the convex edge at one end of the push tube in the sampler is located in the placement space. The utility model relates to the technical field of gas sampling devices for chromatographs.

[0004] The utility model has the effect of realizing accurate extraction.

[0005] When performing chromatographic analysis on gases, it is necessary to uniformly and constantly press the gas into the detection device. Although the device in the above patent can accurately extract the gas, during sample injection, manual operation is required, which easily causes uneven gas injection flow rate and is difficult to control the accuracy of sample injection; for this reason, we provide a carrier gas sampling device for gas chromatographic analysis of oil and gas to solve the above problems. Content of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] The purpose of the utility model is to provide a carrier gas sampling device for gas chromatographic analysis of oil and gas to solve the problem of uneven gas injection flow rate in the comparative document.

[0008] (2) Technical Solutions

[0009] The utility model is realized through the following technical solutions: a carrier gas sampling device for gas chromatographic analysis of oil and gas.

[0010] It includes an installation plate, on the surface of which a controller is fixedly connected. On the surface of the installation plate, a sample injection mechanism is arranged. The sample injection mechanism includes a sample injection cylinder, a push plate and a fixed base, and the fixed base is fixedly connected to the installation plate. On the surface of the installation plate, a power mechanism is arranged. The power mechanism includes a movable frame. At the output end of the sample injection cylinder, a control mechanism is arranged. The control mechanism includes a connection cover clamped to the sample injection cylinder, and a gas inlet pipe is fixedly communicated in the middle of the connection cover.

[0011] Preferably, the sample injection cylinder is slidably connected to the fixed base. A piston is slidably connected inside the sample injection cylinder, and one end of the piston is fixedly connected to the push plate. By driving the piston to move through the push plate, the gas inside the sample injection cylinder is conveyed out.

[0012] Preferably, a positioning cover plate is rotatably connected to the surface of the fixed base. A bolt is rotatably connected to the middle of the fixed base. A fixing nut is threadedly connected to the surface of the bolt. Through the positioning cover plate, the sample injection cylinder is fixed.

[0013] Preferably, a support gasket is slidably connected to the surface of the bolt. The bottom surface of the support gasket abuts against the bolt, and the upper surface of the support gasket abuts against the fixing nut. Through the support gasket, the fixing nut is supported and fixed.

[0014] Preferably, two support wheels are rotatably connected to the surface of the movable frame, and the surface of each support wheel is in transmission connection with the installation plate. Through the support wheels, the movable frame is supported and positioned, improving the stability of the lateral sliding of the movable frame.

[0015] Preferably, a threaded rod is threadedly connected to the bottom of the movable frame, and the threaded rod is rotatably connected to the installation plate. A motor is fixedly connected to the surface of the installation plate, and the output end of the motor is fixedly connected to the threaded rod. By controlling the rotation of the threaded rod through the motor, the movable frame is driven to slide laterally.

[0016] Preferably, a limit card slot is formed on the surface of the push plate. A connection card rod is fixedly connected to the top end of the movable frame, and the connection card rod is slidably connected to the push plate. Through the limit card slot and the connection card rod, it is more convenient for the movable frame to drive the push plate to move.

[0017] Preferably, a fixed rod is fixedly connected to the surface of the installation plate. An electromagnetic valve and a flowmeter are fixedly communicated with the surface of the gas inlet pipe, and both the electromagnetic valve and the flowmeter are fixed on the surface of the fixed rod. Through the electromagnetic valve, the on-off and flow rate of the gas inlet pipe are controlled.

[0018] The present utility model provides a carrier gas sample injection device for gas chromatography analysis, and the beneficial effects thereof are as follows:

[0019] 1. The gas-phase chromatographic analysis carrier gas injection device sucks the gas to be detected through the injection cylinder and stores the gas. The gas inside the injection cylinder is pushed out through the push plate. The injection cylinder is fixed and positioned through the fixed base, improving the stability of the operation of the injection cylinder. The movement of the push plate is controlled through the movable frame, improving the uniformity and stability of gas injection. The intake pipe is connected to the injection cylinder through the connecting cover, and the air output from the injection cylinder is introduced into the detection device through the intake pipe. The device is controlled through the controller to link up, enabling the gas to be detected to be injected at a uniform speed, and then enabling the injected gas to flow out at a uniform speed, improving the accuracy of gas detection by the chromatographic analysis instrument.

[0020] 2. The gas-phase chromatographic analysis carrier gas injection device drives the piston to move through the push plate, transporting the gas inside the injection cylinder out, improving the stability of gas transportation. The injection cylinder is fixed through the positioning cover plate, and the positioning cover plate is fixed to the fixed base through bolts and fixing nuts, improving the fixing ability of the injection cylinder. The fixing nut is supported and fixed through the support gasket, improving the fixing strength of the positioning cover plate. The movable frame is supported and positioned through the support wheels, improving the stability of the lateral sliding of the movable frame.

[0021] 3. The gas-phase chromatographic analysis carrier gas injection device drives the threaded rod to rotate through the motor, and then drives the movable frame to slide laterally. The push plate is fixed to the top of the movable frame through the limit card slot and the connecting rod, making it more convenient for the movable frame to drive the push plate to move and improving the stability of the movement of the push plate. The solenoid valve and the flow meter are fixed through the fixing rod. The on-off and flow rate of the intake pipe are controlled through the solenoid valve, and the air transported by the intake pipe is measured through the flow meter, thereby controlling the stability of the air transported by the intake pipe, and then enabling the injected gas to flow out at a uniform speed, improving the accuracy of gas detection by the chromatographic analysis instrument. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the bolt structure of the present utility model;

[0024] Figure 3 It is a schematic diagram of the connecting rod structure of the present utility model;

[0025] Figure 4 It is a schematic diagram of the control mechanism structure of the present utility model.

[0026]

Main Component Symbol Explanation

[0027] 1. Mounting plate; 2. Controller;

[0028] 3. Sampling mechanism; 301. Sampling cylinder; 302. Piston; 303. Pushing plate; 304. Fixed base; 305. Positioning cover plate; 306. Bolt; 307. Fixed nut; 308. Support gasket;

[0029] 4. Power mechanism; 401. Movable frame; 402. Support wheel; 403. Threaded rod; 404. Motor; 405. Limit card slot; 406. Connecting card rod;

[0030] 5. Control mechanism; 501. Connecting cover; 502. Inlet pipe; 503. Solenoid valve; 504. Flowmeter; 505. Fixed rod. Specific implementation manner

[0031] The embodiment of the present utility model provides a carrier gas sampling device for gas chromatography analysis.

[0032] Please refer to Figure 1 and Figure 2 and, which includes a mounting plate 1. A controller 2 is fixedly connected to the surface of the mounting plate 1. A sampling mechanism 3 is arranged on the surface of the mounting plate 1. The sampling mechanism 3 includes a sampling cylinder 301, a pushing plate 303 and a fixed base 304, and the fixed base 304 is fixedly connected to the mounting plate 1. Through the controller 2, the equipment is linked together to make the gas to be detected enter the sample at a uniform speed. Through the sampling cylinder 301, the gas to be detected is sucked and stored. Through the pushing plate 303, the gas inside the sampling cylinder 301 is pushed out. Through the fixed base 304, the sampling cylinder 301 is fixed and positioned, improving the stability of the operation of the sampling cylinder 301.

[0033] The controller 2 is a prior art, and this application will not elaborate too much on its detailed parameters and models.

[0034] The sampling cylinder 301 is slidably connected to the fixed base 304. A piston 302 is slidably connected inside the sampling cylinder 301, and one end of the piston 302 is fixedly connected to the pushing plate 303. By driving the piston 302 to move through the pushing plate 303, the gas inside the sampling cylinder 301 is transported out, improving the stability of gas transportation.

[0035] A positioning cover plate 305 is rotatably connected to the surface of the fixed base 304. A bolt 306 is rotatably connected to the middle of the fixed base 304. A fixed nut 307 is threadedly connected to the surface of the bolt 306. Through the positioning cover plate 305, the sampling cylinder 301 is fixed. Through the bolt 306 and the fixed nut 307, the positioning cover plate 305 is fixed to the fixed base 304, improving the fixing ability of the sampling cylinder 301.

[0036] The surface of the bolt 306 is slidably connected with a support gasket 308. The bottom surface of the support gasket 308 abuts against the bolt 306, and the upper surface of the support gasket 308 abuts against the fixing nut 307. Through the support gasket 308, the fixing nut 307 is supported and fixed, improving the fixing strength of the positioning cover plate 305.

[0037] Please refer to again Figure 1 , a power mechanism 4 is arranged on the surface of the mounting plate 1. The power mechanism 4 includes a movable frame 401. Through the movable frame 401, the push plate 303 is controlled to move, improving the uniformity and stability of gas sampling.

[0038] Two groups of support wheels 402 are rotatably connected to the surface of the movable frame 401, and the surface of each support wheel 402 is in transmission connection with the mounting plate 1. Through the support wheels 402, the movable frame 401 is supported and positioned, improving the stability of the lateral sliding of the movable frame 401.

[0039] A threaded rod 403 is connected to the bottom of the movable frame 401 in a threaded manner, and the threaded rod 403 is rotatably connected to the mounting plate 1. A motor 404 is fixedly connected to the surface of the mounting plate 1, and the output end of the motor 404 is fixedly connected to the threaded rod 403. Through the motor 404, the threaded rod 403 is driven to rotate, and then the movable frame 401 is driven to slide laterally.

[0040] The motor 404 is a prior art, and this application will not elaborate too much on its detailed parameters and models.

[0041] Please refer to Figure 3 , a limiting card slot 405 is formed on the surface of the push plate 303. A connecting card rod 406 is fixedly connected to the top end of the movable frame 401, and the connecting card rod 406 is slidably connected to the push plate 303. Through the limiting card slot 405 and the connecting card rod 406, the push plate 303 is fixed to the top end of the movable frame 401, making it more convenient for the movable frame 401 to drive the push plate 303 to move and improving the stability of the movement of the push plate 303.

[0042] Please refer to Figure 4 , a control mechanism 5 is arranged at the output end of the sampling cylinder 301. The control mechanism 5 includes a connecting cover 501 clamped to the sampling cylinder 301. An air inlet pipe 502 is fixedly communicated with the middle of the connecting cover 501. Through the connecting cover 501, the air inlet pipe 502 is connected to the sampling cylinder 301, and through the air inlet pipe 502, the air output from the sampling cylinder 301 is introduced into the detection device.

[0043] A fixing rod 505 is fixedly connected to the surface of the mounting plate 1. A solenoid valve 503 and a flow meter 504 are fixedly communicated with the surface of the air inlet pipe 502, and both the solenoid valve 503 and the flow meter 504 are fixed on the surface of the fixing rod 505. The solenoid valve 503 and the flow meter 504 are fixed by the fixing rod 505. The on-off and flow rate of the air inlet pipe 502 are controlled by the solenoid valve 503. The air conveyed by the air inlet pipe 502 is measured by the flow meter 504, thereby controlling the stability of the air conveyed by the air inlet pipe 502.

[0044] The solenoid valve 503 and the flow meter 504 are prior arts, and their detailed parameters and models will not be elaborated in this application.

[0045] When the present utility model is in use: The sample injection cylinder 301 is used to suck the gas to be detected and store the gas. The positioning cover plate 305 and the fixing base 304 are fixed together by the bolts 306 and the fixing nuts 307. The sample injection cylinder 301 is fixed by the positioning cover plate 305. The push plate 303 is fixed to the top of the movable frame 401 through the limit card slot 405 and the connecting card rod 406, making it more convenient for the movable frame 401 to drive the push plate 303 to move. The motor 404 drives the threaded rod 403 to rotate, and then the movable frame 401 drives the push plate 303 to slide horizontally. The push plate 303 drives the piston 302 to move, so that the gas inside the sample injection cylinder 301 is conveyed to the inside of the detection device through the air inlet pipe 502. The air conveyed by the air inlet pipe 502 is measured by the flow meter 504. When the flow rate changes, the flow rate of the air inlet pipe 502 is controlled by the solenoid valve 503. The controller 2 controls the linkage of the device, so that the injected gas flows out at a uniform speed, improving the accuracy of the gas detection by the chromatographic analysis instrument.

[0046] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A carrier gas injection device for oil gas chromatography analysis, comprising a mounting plate (1), characterized in that: A controller (2) is fixedly connected to the surface of the mounting plate (1); a sample injection mechanism (3) is arranged on the surface of the mounting plate (1); the sample injection mechanism (3) comprises a sample injection cylinder (301), a push plate (303) and a fixed base (304); and the fixed base (304) is fixedly connected to the mounting plate (1); a power mechanism (4) is arranged on the surface of the mounting plate (1); the power mechanism (4) comprises a movable frame (401); a control mechanism (5) is arranged at the output end of the sample injection cylinder (301); the control mechanism (5) comprises a connection cover (501) which is clamped with the sample injection cylinder (301); and an air intake pipe (502) is fixedly connected to the middle of the connection cover (501).

2. The carrier gas injection device for oil-gas chromatography analysis according to claim 1, characterized in that: The injection cylinder (301) is slidably connected to the fixed base (304), a piston (302) is slidably connected inside the injection cylinder (301), and one end of the piston (302) is fixedly connected to the push plate (303).

3. The carrier gas injection device for oil-gas chromatography analysis according to claim 1, characterized in that: A positioning cover plate (305) is rotatably connected to the surface of the fixed base (304), a bolt (306) is rotatably connected to the middle of the fixed base (304), and a fixing nut (307) is threadedly connected to the surface of the bolt (306).

4. The carrier gas injection device for oil-gas chromatography analysis according to claim 3, characterized in that: The surface of the bolt (306) is slidably connected with a support washer (308), the bottom surface of the support washer (308) and the bolt (306) are in contact with each other, and the upper surface of the support washer (308) and the fixing nut (307) are in contact with each other.

5. The carrier gas injection device for oil-gas chromatography analysis according to claim 1, characterized in that: The surface of the movable frame (401) is rotatably connected to two groups of support wheels (402), and the surface of each support wheel (402) is transmission-connected to the mounting plate (1).

6. The carrier gas injection device for oil-gas chromatography analysis according to claim 1, characterized in that: The bottom of the movable frame (401) is threadedly connected to a threaded rod (403), and the threaded rod (403) is rotatably connected to the mounting plate (1). The surface of the mounting plate (1) is fixedly connected to a motor (404), and the output end of the motor (404) is fixedly connected to the threaded rod (403).

7. The carrier gas injection device for oil-gas chromatography analysis according to claim 1, characterized in that: A limit clamping groove (405) is provided on the surface of the push plate (303), a connecting clamping rod (406) is fixedly connected to the top of the movable frame (401), and the connecting clamping rod (406) is slidably connected to the push plate (303).

8. The carrier gas injection device for oil-gas chromatography analysis according to claim 1, characterized in that: A fixing rod (505) is fixedly connected to the surface of the mounting plate (1), and a solenoid valve (503) and a flow meter (504) are fixedly connected to the surface of the air intake pipe (502), and both the solenoid valve (503) and the flow meter (504) are fixed to the surface of the fixing rod (505).

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