Quartz nozzle type flame ionization detector (FID) for gas chromatograph special for logging and detection method

Abstract

The invention discloses a quartz nozzle type FID detection device and detection method for a gas chromatograph special for logging, and relates to the technical field of FID detection devices.The quartz nozzle type FID detection device comprises a base, the upper side of the base is fixedly connected with a fixing block through bolts, a first gasket is arranged between the base and the fixing block, a polarization plug is inserted into the fixing block, and a second gasket is arranged between the polarization plug and the fixing block. A fixed block is arranged on the upper side of the base, a collector assembly is inserted into the upper side of the fixed block, a gland is in threaded connection with the outer wall of the upper side of the fixed block, the upper surface of the inner wall of the gland makes contact with the outer wall of the middle of the collector assembly, and a nozzle is in threaded connection with the lower side of the inner wall of the base. And after long-time use, a glass separation blade can be pulled out through a longitudinal rod for wiping and cleaning, so that observation convenience is guaranteed, the air inlet proportion is conveniently adjusted to regulate and control the combustion state in the device, and the device has the characteristics that the practicability is high, and the combustion state in the device can be conveniently regulated and controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of FID detection devices, and specifically to a quartz nozzle type FID detection device and a detection method for a dedicated gas chromatograph for mud logging. Background Technique

[0002] The flame ionization detector (FID) is a detection device widely used in gas chromatographs, especially suitable for analyzing combustible organic compounds such as hydrocarbons. During the mud logging gas chromatographic analysis process, the FID ionizes the organic compounds entering the detection area through the flame generated by burning hydrogen and combustion-supporting gases, and collects the ion signals through electrodes, thereby realizing the quantitative analysis of gas components. However, the following technical problems exist in the existing FID devices during use: In an environment with high temperature, high humidity or fluctuating air flow, the combustion state may be unstable, resulting in a decrease in detection accuracy, affecting the analysis results of the gas chromatograph, and the existing device lacks an effective flame observation window, and the traditional ignition mechanism may cause the ignition wire to be exposed to the flame for a long time, which is easily damaged by high temperature, resulting in a decrease in ignition efficiency and affecting the stability of long-term use; The existing Chinese patent with the publication number: CN103954712B discloses a quartz nozzle type FID detector for a dedicated gas chromatograph for mud logging. The setting of the nozzle fixing seat and the nozzle at a right angle facilitates the insertion of the chromatographic column part into the nozzle fixing seat from the side, but it is not convenient to adjust the combustion state of this device during combustion; Therefore, it is very necessary to design a quartz nozzle type FID detection device and a detection method for a dedicated gas chromatograph for mud logging with strong practicability and convenient for adjusting the internal combustion state of the device. Summary of the Invention

[0003] The purpose of the present invention is to provide a quartz nozzle type FID detection device and a detection method for a dedicated gas chromatograph for mud logging, so as to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A quartz nozzle type FID detection device for a dedicated gas chromatograph in mud logging, including a base, the upper side of the base is fixedly connected by bolts with a fixed block, a first washer is arranged between the base and the fixed block, a polarization plug is inserted into the fixed block, a collector assembly is inserted into the upper side of the fixed block, the outer wall of the upper side of the fixed block is threadedly connected with a gland, the upper surface of the inner wall of the gland contacts the outer wall of the middle part of the collector assembly, the lower side inner wall of the base is threadedly connected with a nozzle, the lower side of the nozzle is fixedly connected with a quartz tube, the lower side of the base is threadedly connected with a lower cover, the side wall of the lower cover is fixedly connected with a first intake pipe, the middle part of the lower side of the lower cover is fixedly connected with a fixed column, the left middle part of the base is fixedly connected with a second intake pipe, the second intake pipe communicates the inside and outside of the base, an observation mechanism is arranged inside the right side of the base, a burn prevention mechanism is arranged outside the collector assembly, a polarization assembly is arranged on the upper right side of the base, the spring contact end of the polarization assembly penetrates through the fixed block and contacts the outer wall of the polarization plug, a moving hole is opened on the side wall of the collector assembly, and a igniter is slidably connected inside the moving hole; The observation mechanism includes an observation component and a moving mechanism; The moving mechanism includes a moving component and a moving rod, and the moving rod can move relative to the base; The burn prevention mechanism includes a connection component and a connection piece, the connection piece is fixedly connected to the outer end of the igniter located outside the collector assembly, and the connection piece and the igniter can move relative to the collector assembly.

[0005] According to the above technical solution, second washers are arranged on both the upper surface and the lower surface of the middle part of the polarization plug, the lower side of the collector assembly contacts the outer wall of the second washer on the upper side of the middle part of the polarization plug, the outer wall of the second washer on the lower side of the middle part of the polarization plug contacts the inner wall of the fixed block, the lower end of the quartz tube is located inside the lower cover, the first intake pipe communicates the inside and outside of the lower cover, and the end of the second intake pipe located inside the base is located between the nozzle and the polarization plug.

[0006] According to the above technical solution, the observation component includes a horizontal channel, the horizontal channel is a round hole opened on the right side inside the base, the left end of the horizontal channel communicates the position between the polarization plug and the nozzle with the outside of the right side of the base, a through hole penetrating front and back is opened on the base at the left end of the horizontal channel, a vertical rod is inserted into the through hole on the base at the left end of the horizontal channel, a glass baffle is fixedly connected to the middle part of the vertical rod, the glass baffle seals the left side of the horizontal channel, and a periscope is fixedly connected to the right side inner wall of the horizontal channel, and the upper end of the periscope is located at the upper side of the base.

[0007] According to the above technical solution, the glass baffle is made of transparent glass, and the periscope can refract the picture on the lower left side upward. The moving mechanism is located in the front of the horizontal channel. Through the observation structure composed of the horizontal channel, the glass baffle and the periscope, the flame state can be visually observed, and the glass baffle can be drawn out through the vertical rod for cleaning, which can ensure the convenience of long-term use and the clarity of observation.

[0008] According to the above technical solution, the moving component includes an air duct. The air duct is an opening formed on the front side of the base. The rear end of the air duct is communicated with the inside of the horizontal channel, and the front end of the air duct is communicated with the front side of the base. A baffle is fixedly connected to the front side of the inner wall of the air duct. A moving piece is placed on the inner wall of the air duct. The outer wall of the moving piece is in contact with the inner wall of the air duct. A sealing piece is fixedly connected to the upper side of the moving piece. A sliding hole is formed in the upper side of the air duct. The sliding hole communicates the upper side of the base with the inside of the air duct. The lower side of the sliding hole is closed by the sealing piece. The upper side of the sealing piece is threadedly connected to the lower end of the moving rod. Air holes communicating up and down are formed in the sealing piece at the front side of the moving rod. The upper end of the moving rod extends to the upper side of the base through the sliding hole. A scale is fixedly connected to the upper surface of the outer wall of the base on the right side of the moving rod.

[0009] According to the above technical solution, the front-back length of the air duct is greater than the front-back length of the sliding hole, and the moving piece is located behind the moving rod. The gas expansion inside the air duct and the horizontal channel pushes the moving piece and the moving rod to move, enabling the user to visually judge the combustion state and optimizing the combustion effect by adjusting the intake ratio.

[0010] According to the above technical solution, the connection component includes a fixing ring. The inner wall of the fixing ring is fixedly connected to the outer wall of the collecting electrode component. A spring is fixedly connected to the right side of the fixing ring. The outer wall of the right side of the spring is fixedly connected to the inner wall of the connecting piece. The right end of the spring extends to the right side of the connecting piece. A fixing frame is fixedly connected to the upper side of the outer wall of the gland. The fixing frame is located on the right side of the igniter. A conductive piece is fixedly connected to the inner wall of the fixing frame. The right end of the spring is in contact with the outer wall of the conductive piece.

[0011] According to the above technical solution, one electrode of the ignition controller is electrically connected to the conductive piece, the left end of the spring is electrically connected to one electrode of the igniter, and the other electrode of the igniter is electrically connected to the other electrode of the ignition controller. Through the electrified contraction and power-off rebound of the spring, the ignition wire of the igniter briefly enters the flame area for ignition and then quickly resets, reducing high-temperature damage and improving the ignition stability and the life of the component.

[0012] Quartz nozzle type FID detection method for mud logging special gas chromatograph, Step 1: Hydrogen is mixed under the lower side of the quartz tube and outputs upward through the quartz tube and nozzle. Air is input into the upper side of the nozzle through the second air inlet pipe. The electrode is connected to the nozzle, and then it is ignited by the igniter. The flame sprays out from the upper side of the nozzle; Step 2: After the flame is generated, polarization and collection operations are carried out through the polarization plug, polarization component, and collection electrode component to ensure the smooth progress of the detection work; Step 3: The flame light enters the periscope through the glass baffle and the horizontal channel, and is observed through the upper end of the periscope. After use, the glass baffle can be drawn out through the vertical rod for cleaning to ensure the convenience of observation for long-term use; Step 4: When the flame burns, the gas heated and expanded pushes the moving piece to move, causing the moving rod to move to the left side of the scale, so as to help the user observe the combustion state and control the combustion state by adjusting the intake ratio; Step 5: The ignition controller is powered on for a short time, so that the spring contracts to pull the connecting piece and the igniter to move into the collection electrode component for ignition. Then the spring is powered off and rebounds to drive the igniter to reset, reducing the damage to the ignition wire and improving the stability and durability of ignition.

[0013] The present invention provides a quartz nozzle type FID detection device and detection method for a mud logging special gas chromatograph. It has the following beneficial effects: 1. The quartz nozzle type FID detection device and detection method for the mud logging special gas chromatograph can, through the setting of an observation mechanism, achieve an intuitive observation of the flame state, and after long-term use, the glass baffle can be drawn out through the vertical rod for wiping and cleaning, thereby ensuring the convenience of observation and facilitating the adjustment of the intake ratio to control the combustion state inside the device; 2. The quartz nozzle type FID detection device and detection method for the mud logging special gas chromatograph can, through the setting of a moving mechanism and the moving piece, sealing piece, and moving rod inside it, utilize the gas expansion to push the moving piece to move, causing the moving rod to move to the left side of the scale accordingly, so that the user can directly observe the flame temperature state after stable combustion, thereby facilitating multiple combustion comparison detections and adjusting the combustion state through the intake ratio; 3. The quartz nozzle type FID detection device and detection method for the mud logging special gas chromatograph can, through the setting of an anti-burning mechanism and the fixed ring, spring, connecting piece, and conductive piece inside it, when the ignition controller is powered on for a short time, make the spring contract to drive the connecting piece and the igniter to move into the collection electrode component for ignition. Then the spring is powered off and rebounds to drive the igniter to reset, reducing the damage to the ignition wire of the igniter by the flame, ensuring the stability of the ignition effect, and facilitating long-term use; 4. The quartz nozzle type FID detection device and detection method of the special gas chromatograph for mud logging inject combustion gas through the nozzle inside the device, use an igniter to ignite, and polarize and collect signals from the flame through a polarization plug, a polarization component, and a collector component, so as to detect the gas components and ensure that the special gas chromatograph for mud logging can accurately analyze the organic compounds in the sample. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic diagram of the lower structure of the present invention; Figure 3 is a schematic diagram of the internal structure of the fixing block of the present invention; Figure 4 is a schematic diagram of the internal structure of the base of the present invention; Figure 5 is a schematic diagram of the moving mechanism of the present invention; Figure 6 is a schematic diagram of the anti-burning mechanism of the present invention; In the figures: 1. Base; 2. Fixing block; 3. First washer; 4. Polarization plug; 5. Second washer; 6. Collector component; 7. gland; 8. Nozzle; 9. Quartz tube; 10. Lower cover; 11. First intake pipe; 12. Fixed column; 13. Second intake pipe; 14. Observation mechanism; 15. Anti-burning mechanism; 16. Polarization component; 17. Igniter; 141. Horizontal channel; 142. Vertical rod; 143. Glass baffle; 144. Periscope; 145. Moving mechanism; 1451. Air duct; 1452. Baffle; 1453. Moving piece; 1454. Sealing piece; 1455. Moving rod; 1456. Scale; 151. Fixed ring; 152. Spring; 153. Connecting piece; 154. Fixed bracket; 155. Conductive piece. Detailed Embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figure 1-6, the present invention provides a technical solution: a quartz nozzle type FID detection device for a dedicated gas chromatograph in mud logging, including a base 1. A fixing block 2 is fixedly connected to the upper side of the base 1 through bolts, and a first washer 3 is arranged between the base 1 and the fixing block 2. A polarization plug 4 is inserted into the fixing block 2. A collector assembly 6 is inserted into the upper side of the fixing block 2. A gland 7 is threadedly connected to the outer wall of the upper side of the fixing block 2. The upper surface of the inner wall of the gland 7 contacts the outer wall of the middle part of the collector assembly 6. A nozzle 8 is threadedly connected to the lower side of the inner wall of the base 1. A quartz tube 9 is fixedly connected to the lower side of the nozzle 8. A lower cover 10 is threadedly connected to the lower side of the base 1. A first inlet pipe 11 is fixedly connected to the side wall of the lower cover 10. A fixing column 12 is fixedly connected to the middle part of the lower side of the lower cover 10. A second inlet pipe 13 is fixedly connected to the left middle part of the base 1. The second inlet pipe 13 communicates the inside and outside of the base 1. An observation mechanism 14 is arranged inside the right side of the base 1. A burn prevention mechanism 15 is arranged outside the collector assembly 6. A polarization assembly 16 is arranged on the upper right side of the base 1. The spring contact end of the polarization assembly 16 penetrates through the fixing block 2 and contacts the outer wall of the polarization plug 4. A moving hole is formed in the side wall of the collector assembly 6, and an igniter 17 is slidably connected inside the moving hole; Second washers 5 are arranged on both the upper surface and the lower surface of the middle part of the polarization plug 4. The lower side of the collector assembly 6 contacts the outer wall of the second washer 5 on the upper side of the middle part of the polarization plug 4. The outer wall of the second washer 5 on the lower side of the middle part of the polarization plug 4 contacts the inner wall of the fixing block 2. The lower end of the quartz tube 9 is located inside the lower cover 10. The first inlet pipe 11 communicates the inside and outside of the lower cover 10. One end of the second inlet pipe 13 located inside the base 1 is located between the nozzle 8 and the polarization plug 4; During use, hydrogen is mixed at the lower side of the quartz tube 9 and then output upward through the quartz tube 9 and the nozzle 8. Air is input to the upper side of the nozzle 8 through the second inlet pipe 13. The electrode is connected to the nozzle 8. Subsequently, after ignition by the igniter 17, a flame is ejected from the upper side of the nozzle 8, and polarization and collection operations are carried out through the polarization plug 4, the polarization assembly 16, and the collector assembly 6; The observation mechanism 14 includes an observation component and a moving mechanism 145. The observation component includes a horizontal channel 141, which is a circular hole opened in the right side inside the base 1. The left end of the horizontal channel 141 communicates the position between the polarization plug 4 and the nozzle 8 with the outside of the right side of the base 1. There is a through hole in the front and back directions at the left end of the horizontal channel 141 on the base 1. A vertical rod 142 is inserted into the through hole at the left end of the horizontal channel 141 on the base 1. A glass baffle 143 is fixedly connected to the middle of the vertical rod 142. The glass baffle 143 blocks the left side of the horizontal channel 141. A periscope 144 is fixedly connected to the right side inner wall of the horizontal channel 141. The upper end of the periscope 144 is located above the base 1. The glass baffle 143 is made of transparent glass material, and the periscope 144 can refract the picture on the lower left part upward. The moving mechanism 145 is located on the front side of the horizontal channel 141; After ignition, the flame light enters the lower end interior of the periscope 144 through the glass baffle 143 and the horizontal channel 141. Subsequently, the flame can be observed through the upper end of the periscope 144, so that the flame can be directly observed. And after long-term use, the vertical rod 142 can be pulled out after stopping use. After the vertical rod 142 is pulled out, the glass baffle 143 can be taken out of the interior of the base 1 synchronously. Subsequently, the glass baffle 143 can be wiped and cleaned, thus ensuring the observation convenience of the device during long-term use, and facilitating the regulation of the combustion state inside the device by adjusting the intake ratio; The moving mechanism 145 includes a moving component and a moving rod 1455. The moving rod 1455 can move relative to the base 1. The moving component includes an air channel 1451, which is an opening on the front side of the base 1. The rear end of the air channel 1451 is communicated with the inside of the horizontal channel 141. The front end of the air channel 1451 is communicated with the front side of the base 1. A baffle 1452 is fixedly connected to the front side inner wall of the air channel 1451. A moving piece 1453 is placed on the inner wall of the air channel 1451. The outer wall of the moving piece 1453 contacts the inner wall of the air channel 1451. A sealing piece 1454 is fixedly connected to the upper side of the moving piece 1453. There is a sliding hole on the upper side of the air channel 1451. The sliding hole communicates the upper side of the base 1 with the inside of the air channel 1451. The lower side of the sliding hole is blocked by the sealing piece 1454. The upper side of the sealing piece 1454 is threadedly connected to the lower end of the moving rod 1455. There is a vertically communicating air hole on the front side of the moving rod 1455 on the sealing piece 1454. The upper end of the moving rod 1455 extends to the upper side of the base 1 through the sliding hole. A scale 1456 is fixedly connected to the upper surface of the outer wall of the base 1 on the right side of the moving rod 1455. The front-back length of the air channel 1451 is greater than the front-back length of the sliding hole, and the moving piece 1453 is located behind the moving rod 1455; After stable combustion inside the device, since the inside of the horizontal channel 141 is blocked by the glass baffle 143 and the periscope 144, and the glass baffle 143 is relatively close to the flame, the gas inside the horizontal channel 141 will expand when heated. Since the inside of the air duct 1451 is communicated with the inside of the horizontal channel 141, the expansion of the gas inside the horizontal channel 141 will push the moving piece 1453 to move. When the moving piece 1453 is pushed forward, the gas on the front side of the moving piece 1453 can be discharged through the air holes opened on the sealing piece 1454. At the same time, the sealing piece 1454 continuously blocks the rear side of the sliding hole. When the sealing piece 1454 moves, it can drive the moving rod 1455 to move. Thus, the user can observe and record the combustion state by the position of the moving rod 1455 staying on the left side of the scale 1456 after movement, which is convenient for directly observing the flame state during multiple combustion comparison detections, and adjusting the combustion state by adjusting the intake ratio. After the combustion ends, the moving rod 1455 can be reset as the gas cools down; The anti-burning mechanism 15 includes a connecting component and a connecting piece 153. The connecting piece 153 is fixedly connected to the outer end of the collector assembly 6 on the outside of the igniter 17, and the connecting piece 153 and the igniter 17 can move relative to the collector assembly 6. The connecting component includes a fixing ring 151. The inner wall of the fixing ring 151 is fixedly connected to the outer wall of the collector assembly 6. A spring 152 is fixedly connected to the right side of the fixing ring 151. The outer wall of the right side of the spring 152 is fixedly connected to the inner wall of the connecting piece 153. The right end of the spring 152 extends to the right side of the connecting piece 153. A fixing frame 154 is fixedly connected to the upper side of the outer wall of the gland 7. The fixing frame 154 is located on the right side of the igniter 17. A conductive piece 155 is fixedly connected to the inner wall of the fixing frame 154. The right end of the spring 152 contacts the outer wall of the conductive piece 155. One electrode of the ignition controller is electrically connected to the conductive piece 155. The left end of the spring 152 is electrically connected to one electrode of the igniter 17. The other electrode of the igniter 17 is electrically connected to the other electrode of the ignition controller; When the device ignites the gas, the ignition controller supplies power for a short time. At the moment of power supply, a circuit is formed among the ignition controller, the conductive sheet 155, the spring 152, and the igniter 17, causing the ignition wire of the igniter 17 to heat up. At the same time, the spring 152 will contract when it is in the energized state, and then the spring 152 pulls the connecting piece 153, causing the connecting piece 153 to drive the igniter 17 to move into the interior of the collector assembly 6, enabling the igniter 17 to ignite the gas. At the same time, since the right end of the spring 152 is separated from the conductive sheet 155 after contraction, the spring 152 de-energizes and rebounds. The rebound of the spring 152 can drive the igniter 17 to reset, and then the ignition wire of the igniter 17 moves out of the middle of the collector assembly 6. At this time, the ignition controller stops power supply, and the igniter 17, the spring 152, and the connecting piece 153 stop moving. During this process, the damage to the ignition wire of the igniter 17 caused by the flame can be reduced, which helps for long-term use, ensures the stability of the ignition effect, and is convenient for observing the flame state in the initial gas supply stage.

[0017] A quartz nozzle type FID detection method for a mud logging special gas chromatograph. Step 1: Hydrogen is mixed under the lower side of the quartz tube 9 and then output upward through the quartz tube 9 and the nozzle 8. Air is input into the upper side of the nozzle 8 through the second air inlet pipe 13. The electrode is connected to the nozzle 8, and then it is ignited by the igniter 17, and the flame sprays out from the upper side of the nozzle 8. Step 2: After the flame is generated, polarization and collection operations are carried out through the polarization plug 4, the polarization assembly 16, and the collector assembly 6 to ensure the smooth progress of the detection work. Step 3: The flame light enters the interior of the periscope 144 through the glass baffle 143 and the horizontal channel 141, and is observed through the upper end of the periscope 144. After use, the glass baffle 143 can be pulled out through the vertical rod 142 for cleaning to ensure the convenience of observation for long-term use. Step 4: When the flame burns, the gas heated and expanded pushes the moving piece 1453 to move, causing the moving rod 1455 to move to the left side of the scale 1456, thereby helping the user observe the combustion state and controlling the combustion state by adjusting the intake ratio. Step 5: The ignition controller supplies power for a short time, causing the spring 152 to contract and pull the connecting piece 153 and the igniter 17 to move into the interior of the collector assembly 6 for ignition. Subsequently, the spring 152 de-energizes and rebounds to drive the igniter 17 to reset, reducing the damage to the ignition wire and improving the stability and durability of ignition.

[0018] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0019] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A quartz mouth type FID detection device for a gas chromatograph for logging, comprising a base (1), the upper side of the base (1) being fixedly connected to a fixing block (2) by bolts, a first gasket (3) being arranged between the base (1) and the fixing block (2), a polarization plug (4) being inserted into the interior of the fixing block (2), a collector assembly (6) being inserted into the upper side of the fixing block (2), a gland (7) being threadedly connected to the upper outer wall of the fixing block (2), the upper surface of the inner wall of the gland (7) being connected to the middle outer wall of the collector assembly (6). The lower side of the inner wall of the base (1) is threadedly connected to a nozzle (8), the lower side of the nozzle (8) is fixedly connected to a quartz tube (9), the lower side of the base (1) is threadedly connected to a lower cover (10), the side wall of the lower cover (10) is fixedly connected to a first air inlet pipe (11), the middle part of the lower side of the lower cover (10) is fixedly connected to a fixing column (12), the middle left side of the base (1) is fixedly connected to a second air inlet pipe (13), the second air inlet pipe (13) connects the inside and outside of the base (1), and is characterized in that: An observation mechanism (14) is provided inside the right side of the base (1), an anti-burning mechanism (15) is provided outside the collector assembly (6), a polarization assembly (16) is provided on the upper right side of the base (1), a spring contact end of the polarization assembly (16) penetrates the fixed block (2) and contacts the outer wall of the polarization plug (4), a movable hole is provided on the side wall of the collector assembly (6), and an igniter (17) is slidably connected inside the movable hole; The observation mechanism (14) comprises an observation component and a moving mechanism (145); The moving mechanism (145) comprises a moving assembly and a moving rod (1455), and the moving rod (1455) can move relative to the base (1); The burn prevention mechanism (15) comprises a connecting assembly and a connecting piece (153); the connecting piece (153) is fixedly connected to an end of the igniter (17) located outside the collector assembly (6); and the connecting piece (153) and the igniter (17) are movable relative to the collector assembly (6).

2. The quartz mouth type FID detection device for a special gas chromatograph for mud logging according to claim 1, characterized in that: A second gasket (5) is provided on the middle upper surface and the middle lower surface of the polarization plug (4); the lower side of the collecting electrode assembly (6) contacts the outer wall of the second gasket (5) on the middle upper side of the polarization plug (4); the outer wall of the second gasket (5) on the middle lower side of the polarization plug (4) contacts the inner wall of the fixing block (2); the lower end of the quartz tube (9) is located inside the lower cover (10); the first air inlet pipe (11) connects the inside and outside of the lower cover (10); and one end of the second air inlet pipe (13) located inside the base (1) is located between the nozzle (8) and the polarization plug (4).

3. The quartz mouth type FID detection device for a special gas chromatograph for mud logging according to claim 2, characterized in that: The observation assembly comprises a transverse channel (141), wherein the transverse channel (141) is a circular hole opened on the right side of the interior of the base (1); the left end of the transverse channel (141) connects the area between the polarization plug (4) and the nozzle (8) with the right side of the exterior of the base (1); a plug hole extending through the front and rear is opened on the left end of the transverse channel (141) on the base (1); a longitudinal rod (142) is inserted into the plug hole on the left end of the transverse channel (141) on the base (1); a glass baffle (143) is fixedly connected to the middle of the longitudinal rod (142); the glass baffle (143) blocks the left side of the transverse channel (141); a periscope (144) is fixedly connected to the right side of the inner wall of the transverse channel (141); the upper end of the periscope (144) is located on the upper side of the base (1).

4. The quartz mouth type FID detection device for a special gas chromatograph for mud logging according to claim 3, characterized in that: The glass baffle (143) is made of transparent glass, and the periscope (144) can refract the left image on its lower side upwards. The moving mechanism (145) is located at the front side of the horizontal channel (141).

5. The quartz mouth type FID detection device for a gas chromatograph for logging according to claim 4, characterized in that: The movable assembly comprises an air channel (1451), wherein the air channel (1451) is opened at the front side of the base (1), the rear end of the air channel (1451) is connected to the inside of the transverse channel (141), the front end of the air channel (1451) is connected to the front side of the base (1), a baffle (1452) is fixedly connected to the front side of the inner wall of the air channel (1451), a movable sheet (1453) is placed on the inner wall of the air channel (1451), the outer wall of the movable sheet (1453) is in contact with the inner wall of the air channel (1451), and a sealing sheet (1454) is fixedly connected to the upper side of the movable sheet (1453). A sliding hole is provided on the upper side of the airway (1451), and the sliding hole connects the upper side of the base (1) with the interior of the airway (1451). The lower side of the sliding hole is closed by a sealing sheet (1454). The upper side of the sealing sheet (1454) is threadedly connected to the lower end of the moving rod (1455). An air hole connected up and down is provided on the sealing sheet (1454) at the front side of the moving rod (1455). The upper end of the moving rod (1455) extends to the upper side of the base (1) through the sliding hole. A scale (1456) is fixedly connected to the upper surface of the outer wall of the base (1) at the right side of the moving rod (1455).

6. The quartz mouth type FID detection device for a gas chromatograph for logging according to claim 5, characterized in that: The front-to-back length of the airway (1451) is greater than the front-to-back length of the sliding hole, and the moving sheet (1453) is located at the rear side of the moving rod (1455).

7. The quartz mouth type FID detection device for a special gas chromatograph for mud logging according to claim 6, characterized in that: The connection assembly comprises a fixing ring (151), the inner wall of the fixing ring (151) is fixedly connected to the outer wall of the collector assembly (6), a spring (152) is fixedly connected to the right side of the fixing ring (151), the right side outer wall of the spring (152) is fixedly connected to the inner wall of the connecting plate (153), the right end of the spring (152) extends to the right side of the connecting plate (153), a fixing frame (154) is fixedly connected to the upper side of the outer wall of the gland (7), the fixing frame (154) is located on the right side of the igniter (17), a conductive sheet (155) is fixedly connected to the inner wall of the fixing frame (154), and the right end of the spring (152) contacts the outer wall of the conductive sheet (155).

8. The quartz mouth type FID detection device for a special gas chromatograph for mud logging according to claim 7, characterized in that: The conductive sheet (155) is electrically connected to an electrode of the ignition controller, the left end of the spring (152) is electrically connected to an electrode of the igniter (17), and the other electrode of the igniter (17) is electrically connected to the other electrode of the ignition controller.

9. A quartz mouth FID detection method for a gas chromatograph for logging, characterized in that: Step 1: hydrogen is mixed at the bottom of the quartz tube (9) and then output upward through the quartz tube (9) and the nozzle (8), air is input into the top of the nozzle (8) through the second air inlet pipe (13), the electrode is connected to the nozzle (8), and then ignited by the igniter (17), and the flame is ejected from the top of the nozzle (8); Step 2: After the flame is generated, polarization and collection operations are performed through the polarization plug (4), the polarization component (16), and the collecting electrode component (6) to ensure smooth detection; Step 3: The flame light enters the periscope (144) through the glass baffle (143) and the transverse channel (141), and is observed through the upper end of the periscope (144). After use, the glass baffle (143) can be pulled out through the longitudinal rod (142) for cleaning, thereby ensuring the convenience of observation for long-term use; Step 4: When the flame burns, the gas that expands due to heat pushes the moving plate (1453) to move, causing the moving rod (1455) to move to the left side of the scale (1456), thereby helping the user to observe the combustion state and control the combustion state by adjusting the air intake ratio; Step 5: The ignition controller supplies power for a short period of time, causing the spring (152) to contract and pull the connecting piece (153) and the igniter (17) to move toward the inside of the collector assembly (6) to ignite. Subsequently, the spring (152) is powered off and rebounds to drive the igniter (17) to reset, thereby reducing damage to the ignition wire and improving the stability and durability of the ignition.

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