Quartz Nozzle Type FID Detection Device and Detection Method for Mud Logging Special Gas Chromatograph

Abstract

The invention discloses a quartz mouth type FID detection device and a detection method for a gas chromatograph specially used for logging. The invention relates to the technical field of FID detection devices, comprising a base, wherein a fixing block is fixedly connected to the upper side of the base by bolts, a first gasket is arranged between the base and the fixing block, a polarization plug is inserted inside the fixing block, a collector assembly is inserted on the upper side of the fixing block, a pressure cap is threadedly connected to the upper outer wall of the fixing block, the upper surface of the inner wall of the pressure cap contacts the middle outer wall of the collector assembly, and a nozzle is threadedly connected to the lower side of the inner wall of the base. The invention can realize intuitive observation of the flame state by arranging an observation mechanism, and can wipe and clean the glass baffle by pulling out the glass baffle through a longitudinal rod after long-term use, thereby ensuring the convenience of observation, facilitating the adjustment of the air intake ratio to regulate the combustion state inside the device, and has the characteristics of strong practicality and convenience in regulating the combustion state inside the device.

Description

Technical Field

[0001] The present invention relates to the technical field of FID detection devices, and particularly 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, and is particularly 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 the combustion-supporting gas, and collects the ion signals through electrodes, thereby realizing the quantitative analysis of the gas components. However, the following technical problems exist in the existing FID devices during use:

[0003] In an environment with high temperature, high humidity or airflow fluctuations, 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;

[0004] 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 from the side into the nozzle fixing seat, but the combustion state of this device is not easy to be regulated during combustion;

[0005] 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 regulation of the internal combustion state of the device. Summary of the Invention

[0006] 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 to solve the problems raised in the above background technique.

[0007] 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, comprising a base. A fixing block is fixedly connected to the upper side of the base by bolts, and a first washer is arranged between the base and the fixing block. A polarization plug is inserted into the fixing block. A collector assembly is inserted into the upper side of the fixing block. A gland is threadedly connected to the outer wall of the upper side of the fixing block, and the upper surface of the inner wall of the gland contacts the middle outer wall of the collector assembly. A nozzle is threadedly connected to the lower side of the inner wall of the base. A quartz tube is fixedly connected to the lower side of the nozzle. A lower cover is threadedly connected to the lower side of the base. A first air inlet pipe is fixedly connected to the side wall of the lower cover. A fixing column is fixedly connected to the middle part of the lower side of the lower cover. A second air inlet pipe is fixedly connected to the left middle part of the base, and the second air inlet 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 fixing block and contacts the outer wall of the polarization plug. A moving hole is formed in the side wall of the collector assembly, and an igniter is slidably connected inside the moving hole;

[0008] The observation mechanism includes an observation component and a moving mechanism;

[0009] The moving mechanism includes a moving component and a moving rod, and the moving rod can move relative to the base;

[0010] 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.

[0011] 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 fixing block. The lower end of the quartz tube is located inside the lower cover. The first air inlet pipe communicates the inside and outside of the lower cover. The end of the second air inlet pipe located inside the base is located between the nozzle and the polarization plug.

[0012] According to the above technical solution, the observation component includes a horizontal channel, which 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 from front to back is opened on the base at the left end of the horizontal channel, and a vertical rod is inserted into the through hole at the left end of the horizontal channel on the base. A glass baffle is fixedly connected to the middle part of the vertical rod, and the glass baffle blocks the left side of the horizontal channel. A periscope is fixedly connected to the right side inner wall of the horizontal channel, and the upper end of the periscope is located on the upper side of the base.

[0013] According to the above technical solution, the glass baffle is made of transparent glass material, and the periscope can refract the picture on the lower left side upward. The moving mechanism is located on the front side of the horizontal channel. Through the observation structure composed of the horizontal channel, the glass baffle and the periscope, the flame state can be directly 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.

[0014] According to the above technical solution, the moving component includes an air duct. The air duct is an opening provided 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 provided on 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 provided on the front side of the moving rod on the sealing piece. 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.

[0015] 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 directly judge the combustion state and optimizing the combustion effect by adjusting the intake ratio.

[0016] 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.

[0017] 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.

[0018] A quartz mouth type FID detection method for a gas chromatograph for logging, step 1: hydrogen is mixed at the lower side of the quartz tube and then output upward through the quartz tube and the nozzle, air is input to the upper side of the nozzle through the second air inlet pipe, the electrode is connected to the nozzle, and then ignited by the igniter, and the flame is ejected from the upper side of the nozzle;

[0019] Step 2: After the flame is generated, polarization and collection operations are performed through the polarization plug, polarization component, and collecting electrode component to ensure the smooth progress of the detection work;

[0020] 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 pulled out through the vertical rod for cleaning, ensuring the convenience of observation for long-term use;

[0021] Step 4: When the flame burns, the gas that expands due to heat pushes the moving piece to move, causing the moving rod to move to the left side of the scale, thereby helping the user to observe the combustion state and control the combustion state by adjusting the air intake ratio;

[0022] Step 5: The ignition controller supplies power for a short period of time, causing the spring to contract and pull the connecting piece and the igniter to move toward the inside of the collector assembly to ignite. The spring then loses power and rebounds to reset the igniter, reducing damage to the ignition wire and improving the stability and durability of the ignition.

[0023] The present invention provides a quartz mouth type FID detection device and detection method for a gas chromatograph for logging, which has the following beneficial effects:

[0024] 1. The quartz mouth FID detection device and detection method of the special gas chromatograph for logging can realize intuitive observation of the flame state by providing an observation mechanism, and can wipe and clean the glass baffle by pulling out the longitudinal rod after long-term use, thereby ensuring the convenience of observation and facilitating the adjustment of the air intake ratio to control the combustion state inside the device;

[0025] 2. The quartz mouth FID detection device and detection method of the gas chromatograph for logging use, by providing a moving mechanism and a moving sheet, a sealing sheet and a moving rod inside, can use gas expansion to push the moving sheet to move, so that the moving rod moves 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 by the air intake ratio;

[0026] 3. The quartz nozzle type FID detection device and detection method of the dedicated gas chromatograph for mud logging can, by setting an anti-burning mechanism and the fixed ring, spring, connecting piece and conductive piece inside it, when the ignition controller supplies power for a short time, make the spring contract to drive the connecting piece and the igniter to move into the collecting electrode assembly for ignition. Subsequently, the spring rebounds after power-off to drive the igniter to reset, reducing the damage of the ignition wire of the igniter by the flame, ensuring the stability of the ignition effect, and facilitating long-term use.

[0027] 4. The quartz nozzle type FID detection device and detection method of the dedicated gas chromatograph for mud logging spray combustion gas through the nozzle inside the device, use the igniter for ignition, and polarize and collect signals from the flame through the polarization plug, polarization assembly and collecting electrode assembly to realize the detection of gas components, ensuring that the dedicated gas chromatograph for mud logging can accurately analyze the organic compounds in the sample. Brief Description of the Drawings

[0028] The drawings are used to provide 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:

[0029] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0030] Figure 2 is the schematic diagram of the lower structure of the present invention;

[0031] Figure 3 is the schematic diagram of the internal structure of the fixing block of the present invention;

[0032] Figure 4 is the schematic diagram of the internal structure of the base of the present invention;

[0033] Figure 5 is the schematic diagram of the moving mechanism of the present invention;

[0034] Figure 6 is the schematic diagram of the anti-burning mechanism of the present invention;

[0035] In the figure: 1, base; 2, fixed block; 3, first washer; 4, polarization plug; 5, second washer; 6, collector assembly; 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 assembly; 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 implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying 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 work shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1-6 , the present invention provides a technical solution: a quartz nozzle type FID detection device for a mud logging special gas chromatograph, including a base 1, a fixed block 2 is fixedly connected to the upper side of the base 1 through bolts, a first washer 3 is arranged between the base 1 and the fixed block 2, a polarization plug 4 is inserted into the fixed block 2, a collector assembly 6 is inserted into the upper side of the fixed block 2, a gland 7 is threadedly connected to the outer wall of the upper side of the fixed block 2, the upper surface of the inner wall of the gland 7 contacts the middle outer wall 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 intake pipe 11 is fixedly connected to the side wall of the lower cover 10, a fixed column 12 is fixedly connected to the middle of the lower side of the lower cover 10, a second intake pipe 13 is fixedly connected to the left middle of the base 1, the second intake 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, an anti-burning 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 fixed block 2 and contacts the outer wall of the polarization plug 4; a moving hole is opened on the side wall of the collector assembly 6, and an igniter 17 is slidably connected inside the moving hole;

[0038] A second washer 5 is provided on both the upper surface and the lower surface of the middle part of the polarization insert 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 insert 4. The outer wall of the second washer 5 on the lower side of the middle part of the polarization insert 4 contacts the inner wall of the fixed block 2. The lower end of the quartz tube 9 is located inside the lower cover 10. The first air inlet pipe 11 is provided to connect the inside and outside of the lower cover 10. One end of the second air inlet pipe 13 located inside the base 1 is located between the nozzle 8 and the polarization insert 4;

[0039] During use, hydrogen is mixed on 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 air inlet pipe 13. The electrode is connected to the nozzle 8. Subsequently, after ignition by the igniter 17, the flame is ejected from the upper side of the nozzle 8, and polarization and collection operations are performed through the polarization insert 4, the polarization assembly 16, and the collector assembly 6;

[0040] The observation mechanism 14 includes an observation component and a moving mechanism 145. The observation component includes a horizontal channel 141. The horizontal channel 141 is a circular hole opened on the right side inside the base 1. The left end of the horizontal channel 141 connects the position between the polarization insert 4 and the nozzle 8 to the outside of the right side of the base 1. A through hole penetrating from front to back is opened on the base 1 at the left end of the horizontal channel 141. A vertical rod 142 is inserted into the through hole on the base 1 at the left end of the horizontal channel 141. 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 on the upper side of 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;

[0041] After ignition, the flame light enters the lower end inside 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 inside of the base 1 synchronously. Subsequently, the glass baffle 143 can be wiped and cleaned, so as to ensure the observation convenience of the device during long-term use, and thus facilitate the regulation of the combustion state inside the device by adjusting the intake ratio;

[0042] The moving mechanism 145 includes a moving component and a moving rod 1455. The moving rod 1455 is movable relative to the base 1. The moving component includes an air duct 1451. The air duct 1451 is an opening provided on the front side of the base 1. The rear end of the air duct 1451 is communicated with the inside of the horizontal channel 141. The front end of the air duct 1451 is communicated with the front side of the base 1. A baffle 1452 is fixedly connected to the front side of the inner wall of the air duct 1451. A moving piece 1453 is placed on the inner wall of the air duct 1451. The outer wall of the moving piece 1453 is in contact with the inner wall of the air duct 1451. A sealing piece 1454 is fixedly connected to the upper side of the moving piece 1453. A sliding hole is provided on the upper side of the air duct 1451. The sliding hole communicates the upper side of the base 1 with the inside of the air duct 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. Air holes communicating up and down are provided on the sealing piece 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. The front-back length of the air duct 1451 is greater than the front-back length of the sliding hole, and the moving piece 1453 is located at the rear side of the moving rod 1455;

[0043] 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 provided 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 where the moving rod 1455 stops on the left side of the scale 1456 after moving, which is convenient for visually 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;

[0044] The anti-burning mechanism 15 includes a connecting component and a connecting piece 153. The connecting piece 153 is fixedly connected to one end of the outer side of the collector assembly 6 where the igniter 17 is located, 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;

[0045] When the device ignites the gas, the ignition controller supplies power for a short time. At the moment of power supply, the ignition controller, the conductive piece 155, the spring 152, and the igniter 17 form a circuit, causing the ignition wire of the igniter 17 to heat up. At the same time, the spring 152 will contract under 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, so that the igniter 17 ignites the gas. At the same time, since the right end of the spring 152 separates from the conductive piece 155 after contraction, the spring 152 rebounds when powered off. 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 supplying power, and the igniter 17, the spring 152, and the connecting piece 153 stop moving. During this process, the damage of the ignition wire of the igniter 17 by the flame can be reduced, which helps to be used for a long time, ensures the stability of the ignition effect, and is convenient for observing the flame state in the initial gas supply stage.

[0046] The quartz nozzle type FID detection method for the mud logging special gas chromatograph. Step 1: Hydrogen is mixed under 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 intake pipe 13. The electrode is connected to the nozzle 8, and then it is ignited by the igniter 17, and the flame sprays out on the upper side of the nozzle 8;

[0047] 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;

[0048] Step 3: The flame light passes through the glass baffle 143 and the horizontal channel 141 and enters the periscope 144. Observation is carried out through the upper end of the periscope 144. After use, the glass baffle 143 can be drawn out through the vertical rod 142 for cleaning to ensure the convenience of observation during long-term use;

[0049] 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 to observe the combustion state and controlling the combustion state by adjusting the intake ratio;

[0050] 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 collector assembly 6 for ignition. Subsequently, the spring 152 is powered off and rebounds to drive the igniter 17 to reset, reducing the damage to the ignition wire and improving the stability and durability of ignition.

[0051] It should be noted that in this article, 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 term "comprising", "including" or any other variant thereof is 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 further includes elements inherent to such process, method, article or device.

[0052] 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 nozzle type FID detection device for a dedicated gas chromatograph in mud logging, comprising a base (1), wherein a fixing block (2) is fixedly connected to the upper side of the base (1) by bolts, 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 intake 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 intake pipe (13) is fixedly connected to the left middle part of the base (1), and the second intake pipe (13) communicates the inside and outside of the base (1). It is characterized in that: An observation mechanism (14) is arranged inside the right side of the base (1), a burn prevention mechanism (15) is arranged outside the collecting electrode assembly (6), a polarization assembly (16) is arranged at the upper right side of the base (1), the spring contact end of the polarization assembly (16) penetrates through the fixed block (2) and contacts the outer wall of the polarization plug (4), a moving hole is formed in the side wall of the collecting electrode assembly (6), and an igniter (17) is slidably connected inside the moving hole; The observation mechanism (14) includes an observation component and a moving mechanism (145); The moving mechanism (145) includes a moving component and a moving rod (1455), and the moving rod (1455) can move relative to the base (1); The burn prevention mechanism (15) includes a connecting component and a connecting piece (153), the connecting piece (153) is fixedly connected to one end of the igniter (17) located outside the collecting electrode assembly (6), and the connecting piece (153) and the igniter (17) can move relative to the collecting electrode assembly (6); The observation component includes a horizontal channel (141), the horizontal channel (141) is a circular hole formed inside the right side of 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), a through hole penetrating through the front and back is formed in the base (1) at the left end of the horizontal channel (141), a vertical rod (142) is inserted into the through hole in the base (1) at the left end of the horizontal channel (141), 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), and a periscope (144) is fixedly connected to the right side inner wall of the horizontal channel (141), and 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 image on the lower left side upward, and the moving mechanism (145) is located on the front side of the horizontal channel (141); The moving component includes an air duct (1451), which is an opening provided on the front side of the base (1). The rear end of the air duct (1451) is communicated with the inside of the horizontal channel (141), the front end of the air duct (1451) is communicated with the front side of the base (1), a baffle (1452) is fixedly connected to the front side of the inner wall of the air duct (1451), a moving piece (1453) is placed on the inner wall of the air duct (1451), the outer wall of the moving piece (1453) is in contact with the inner wall of the air duct (1451), a sealing piece (1454) is fixedly connected to the upper side of the moving piece (1453), a sliding hole is provided on the upper side of the air duct (1451), and the sliding hole communicates the upper side of the base (1) with the inside of the air duct (1451). The lower side of the sliding hole is closed by the sealing piece (1454), the upper side of the sealing piece (1454) is threadedly connected to the lower end of a moving rod (1455), air holes communicating up and down are provided on the sealing piece (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, and 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).

2. The quartz nozzle type FID detection device for the dedicated gas chromatograph for mud logging according to claim 1, characterized in that: Second washers (5) are provided 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) is in contact with the outer wall of the second washer (5) on the upper side of the middle part of the polarization plug (4), and the outer wall of the second washer (5) on the lower side of the middle part of the polarization plug (4) is in contact with the inner wall of the fixed block (2). The lower end of the quartz tube (9) is located inside the lower cover (10), and the first air inlet pipe (11) communicates the inside and outside of the lower cover (10). One end of the second air inlet pipe (13) located inside the base (1) is between the nozzle (8) and the polarization plug (4).

3. The quartz nozzle type FID detection device for the dedicated gas chromatograph for mud logging according to claim 2, characterized in that: The front-to-back length of the air duct (1451) is greater than the front-to-back length of the sliding hole, and the moving piece (1453) is located at the rear side of the moving rod (1455).

4. The quartz nozzle type FID detection device for the dedicated gas chromatograph for mud logging according to claim 3, characterized in that: The connection component includes a fixed ring (151), the inner wall of the fixed 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 fixed ring (151), the outer wall of the right side of the spring (152) is fixedly connected to the inner wall of a connecting piece (153), and the right end of the spring (152) extends to the right side of the connecting piece (153). A fixed frame (154) is fixedly connected to the upper side of the outer wall of the gland (7), the fixed frame (154) is located at the right side of the igniter (17), a conductive piece (155) is fixedly connected to the inner wall of the fixed frame (154), and the right end of the spring (152) is in contact with the outer wall of the conductive piece (155).

5. The quartz nozzle type FID detection device for the dedicated gas chromatograph for mud logging according to claim 4, characterized in that: 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), and the other electrode of the igniter (17) is electrically connected to the other electrode of the ignition controller.

6. Quartz nozzle type FID detection method for mud logging special gas chromatograph, using the detection device as described in claim 4, comprising the following steps: 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 intake pipe (13). The electrode is connected to the nozzle (8), and then ignition is carried out through the igniter (17). The flame is ejected 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). Step 3: The flame light enters 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) is withdrawn through the vertical rod (142) for cleaning. Step 4: When the flame burns, the gas heated and expanded pushes the moving piece (1453) to move, so that the moving rod (1455) moves to the left side of the scale (1456) accordingly, helping the user to 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 collector assembly (6) for ignition. Subsequently, the spring (152) is powered off and rebounds to drive the igniter (17) to reset, reducing the damage to the ignition wire.

Images