An online hydrogen sulfide analyzer

Abstract

The invention relates to the technical field of hydrogen sulfide detection, and specifically to an online hydrogen sulfide analyzer, comprising a hydrogen sulfide sensor, a regulating pipe, and an outlet connecting pipe and an inlet connecting pipe connected at both ends of the regulating pipe, wherein an inner regulating cavity is arranged inside the regulating pipe, an interface to be fixedly inserted at the top of the regulating pipe, a protective connecting cavity and a sensor probe are fixedly arranged at the bottom of the hydrogen sulfide sensor, the protective connecting cavity is inserted into the interface to be inserted to the inside of an analysis flow slot, the inner regulating cavity is symmetrically provided with an analysis inlet slot and a comparison inlet slot, an analysis flow slot and a comparison flow slot, and a comparison outlet slot and an analysis outlet slot, and a lateral slot is also arranged inside the inner regulating cavity, the invention is adapted to a universal connection mode of a hydrogen sulfide analysis sensor, a corresponding interface and a same comparison cavity are arranged, and through the regulation and indication of the outside, a unit flow rate can be flexibly specified to perform hydrogen sulfide content analysis, so that the accuracy of detection is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen sulfide detection, in particular to an online hydrogen sulfide analyzer. Background Art

[0002] When the existing hydrogen sulfide analyzer conducts online testing on pipeline natural gas, the pipeline valve or central test does not have a stable and integrated transmission test conversion means for temporary flow change. The plug-in hydrogen sulfide detection requires flow change through a vent valve. Although it does not affect the transportation process of the natural gas itself, the vent valve is difficult to ensure the airtightness when the sensor connector is inserted. If multiple fixed probes are always placed in the pipeline, the cost is high and it is more cumbersome. It also needs to be repeatedly opened and closed, affecting the normal transportation of natural gas. In addition, the existing hydrogen sulfide sensors have high precision. The same model of hydrogen sulfide sensors has different differences in connector specifications due to the different flow volumes occupied in the pipeline. The hydrogen sulfide content measured when each probe is inserted also has relatively obvious errors. This unnecessary error and the problem of stable regulation are difficult to solve at the same time. For this reason, the present application proposes an online hydrogen sulfide analyzer to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide an online hydrogen sulfide analyzer to solve the problems raised in the above background technology.

[0004] The technical solution of the present invention is: an online hydrogen sulfide analyzer, comprising a hydrogen sulfide sensor, a regulating pipe, and an outlet connecting pipe and an inlet connecting pipe connected at both ends of the regulating pipe, an inner regulating cavity is arranged inside the regulating pipe, a waiting interface is fixedly inserted on the top of the regulating pipe, a protective connecting cavity and a sensor probe are fixedly arranged at the bottom of the hydrogen sulfide sensor, the protective connecting cavity is inserted into the waiting interface and extends to the inside of an analysis flow slot, the inner regulating cavity is symmetrically provided with an analysis inlet slot and a comparison inlet slot, an analysis flow slot and a comparison flow slot, and a comparison outlet slot and an analysis outlet slot, a lateral slot is also arranged inside the inner regulating cavity, the lateral slot is connected to the analysis flow slot, a flow bottom slot is arranged at the bottom of the analysis flow slot, a movable bottom block is slidably connected to the inner wall of the analysis flow slot, and the ... A spring is provided between the movable bottom block and the bottom of the inner wall of the circulation bottom groove. In the initial state, the movable bottom block is tightly fitted with the bottom of the interface, and the spring is in an extended state. A fixed bottom block is fixed to the bottom inner wall of the comparison circulation groove, and a fixed top block is fixed to the top inner wall of the comparison circulation groove. A synchronous connecting cavity is fixedly connected between the fixed bottom block and the fixed top block. Flow baffles are respectively slidably provided on the side of the fixed bottom block and the movable bottom block away from the outlet connecting pipe. A connecting strip is fixedly connected to the outer peripheral wall of each flow baffle. The two connecting strips are integrally formed with the linkage rod. A movable groove is also provided in the inner regulating cavity. The linkage rod slides in the movable groove. A guide mechanism is also provided on the side of the regulating pipe fitting close to the inlet connecting pipe, and an indicating mechanism is also provided on the side of the regulating pipe fitting close to the outlet connecting pipe.

[0005] Preferably, the guide mechanism includes a guide plate, a rotating shaft and a connecting plate, the rotating shaft is fixedly connected to the guide plate, the rotating shaft is rotatably connected to the inside of the regulating pipe, the connecting plate is fixed to one side outer wall of the movable bottom block, the inner regulating cavity is also provided with a strip groove, the strip groove is connected with the lateral groove, the connecting plate is integrally formed with an extension strip, the extension strip is provided with a screw hole, the extension strip slides in the strip groove, the bottom of the strip groove is also provided with a transmission groove, the bottom of the extension strip is integrally formed with a transmission block, the transmission block slides in the transmission groove, the outer wall of the transmission block close to the inlet connecting pipe is provided with a bevel tooth groove, the outer peripheral wall of the rotating shaft is sleeved and fixed with a bevel tooth half ring, the bevel tooth half ring is meshed with the bevel tooth groove.

[0006] Preferably, the indicating mechanism includes a transparent plate, a blocking plate 1 and a blocking plate 2, the transparent plate is fixedly provided above the regulating tube, the regulating tube is also engraved with scale lines arranged in a semicircular arc shape, which is used to observe the changes in the rotational position of the blocking plate 1 and the blocking plate 2, a central support shaft is fixed inside the regulating tube, a movable sleeve column is movably sleeved on the outside of the central support shaft, the blocking plate 1 and the blocking plate 2 are both movably sleeved on the central support shaft, the outer peripheral wall of the movable sleeve column is integrally formed with an intermediate plate, and a plurality of bending springs are respectively provided between the blocking plate 1 and the blocking plate 2 and the intermediate plate.

[0007] Preferably, a connecting support block is integrally formed in the interface, a through hole is opened in the connecting support block, and the sensor probe can be inserted into the through hole. When the regulating pipe is not detected in the initial state, a protective cover is sleeved on the outside of the interface to further isolate the inside and outside of the regulating pipe.

[0008] Preferably, a resistance screw is inserted into the top of the regulating pipe, and the resistance screw is inserted into the extension bar through a thread. The resistance screw is driven by the extension bar to resist the linkage rod.

[0009] Preferably, an active sleeve is rotatably connected to the top of the regulating pipe, a limiting slide groove is provided inside the active sleeve, the abutting screw slides inside the limiting slide groove, and a gear ring is fixedly sleeved outside the active sleeve.

[0010] Preferably, the top of the regulating tube is rotatably connected to a connecting shaft, the outside of the connecting shaft is sleeved with an active tooth, the active tooth is meshed with a gear ring, a protective shell is fixedly provided on the top of the regulating tube, the protective shell is integrally formed with a shaft protective shell, the shaft protective shell is sleeved on the outside of the active sleeve column, and the connecting shaft passes through the protective shell and is fixed with a rotating handle.

[0011] Preferably, the movable bottom block and the fixed bottom block are provided with a U-shaped groove and a connecting port on one side close to the flow baffle, the U-shaped groove and the connecting port are connected, the U-shaped groove is used for the corresponding flow baffle to slide through, and the connecting port is used for the corresponding connecting strip to slide through.

[0012] The present invention provides an online hydrogen sulfide analyzer through improvement, which has the following improvements and advantages compared with the prior art:

[0013] 1. The present invention is suitable for the connection mode of the universal hydrogen sulfide analysis sensor, and the corresponding interface and the same comparison cavity are set. Through the adjustment and indication of the outside, the unit flow rate can be flexibly specified to perform hydrogen sulfide content analysis, so that the accuracy of the detection is effectively improved;

[0014] 2. The present invention can be monitored in real time by wireless connection, and when the device is not in use, it can always be stored in the pipeline connection without affecting the normal gas transmission, so that the operability of the device is effectively improved;

[0015] 3. In the present invention, by setting the movable bottom block and the connecting plate, when the hydrogen sulfide analysis sensor is inserted for analysis, the guide plate can be directly opened automatically, so that the internal gas can automatically enter the analysis flow slot and contact the probe part of the hydrogen sulfide analysis sensor;

[0016] 4. When different specifications of probes on different hydrogen sulfide sensors penetrate into the pipe to measure the hydrogen sulfide content, the influence of the flow rate occupied by the probe itself can be effectively solved. Since the probes on various types of hydrogen sulfide sensors have different shapes, contours or lengths, the deviation from the actual flow rate can be indicated by adjusting the outer baffle, which effectively improves the sensing accuracy of the probe on the hydrogen sulfide sensor and prevents unnecessary errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the connecting plate and the guide plate in the present invention;

[0021] Figure 4 It is a three-dimensional cross-sectional schematic diagram of the hydrogen sulfide sensor of the present invention after being inserted into the interface;

[0022] Figure 5 yes Figure 4 A partial enlarged view of part A;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the linkage rod, the interference screw rod and the connecting parts thereof in the present invention;

[0024] Figure 7 It is a partial three-dimensional cross-sectional schematic diagram of the hydrogen sulfide sensor after being inserted into the interface in the present invention;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the active tooth and the gear ring meshing in the present invention;

[0026] Fig. 9 It is a three-dimensional disassembled diagram of the blocking plate 1, the blocking plate 2 and the central support shaft in the present invention;

[0027] Fig.10 It is a three-dimensional schematic diagram of pulling out the protective cover and inserting the hydrogen sulfide sensor in the present invention;

[0028] Fig.11 It is a schematic diagram of the overall cross-sectional plan structure of the present invention.

[0029] Description of reference numerals:

[0030] 1. Hydrogen sulfide sensor; 2. Outlet connecting pipe; 3. Interface; 4. Control pipe; 5. Inlet connecting pipe; 6. Protective shell; 7. Turning handle; 8. Inner adjustment cavity; 9. Connecting plate; 10. Guide plate; 11. Fixed top block; 12. Fixed bottom block; 13. Synchronous connecting cavity; 14. Blocking plate 1; 15. Blocking plate 2; 16. Protective connecting cavity; 17. Movable bottom block; 18. Transparent plate; 19. Resistance screw; 20. Active sleeve; 21. Gear ring; 22. Linkage rod; 23. Flow baffle; 24. Sensor probe; 25. Connecting support block; 27. Spring; 28. Active tooth; 29. ​​Middle plate; 30. Movable Sleeve column; 31, central support shaft; 32, bending spring; 33, socket; 34, protective cover; 61, shaft protection shell; 71, connecting shaft; 81, lateral groove; 82, strip groove; 83, analysis inlet groove; 84, analysis flow groove; 85, analysis outlet groove; 86, comparison inlet groove; 87, comparison flow groove; 88, comparison outlet groove; 89, movable groove; 91, extension strip; 101, rotating shaft; 170, U-shaped through groove; 171, connecting port; 200, limiting slide groove; 231, connecting strip; 820, transmission groove; 840, flow bottom groove; 910, screw hole; 911, transmission block; 1011, helical tooth half ring; 9110, helical tooth groove. DETAILED DESCRIPTION

[0031] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Reference Figure 1-Figure 11As shown, an online hydrogen sulfide analyzer comprises a hydrogen sulfide sensor 1, a regulating pipe 4, and an outlet connecting pipe 2 and an inlet connecting pipe 5 connected at both ends of the regulating pipe 4, an inner regulating cavity 8 is arranged inside the regulating pipe 4, a waiting interface 3 is fixedly inserted on the top of the regulating pipe 4, a protective connecting cavity 16 and a sensor probe 24 are fixedly arranged at the bottom of the hydrogen sulfide sensor 1, the protective connecting cavity 16 is inserted into the waiting interface 3 and extends to the inside of the analysis flow slot 84, the inner regulating cavity 8 is symmetrically provided with an analysis inlet slot 83 and a comparison inlet slot 86, an analysis flow slot 84 and a comparison flow slot 87, and an analysis outlet slot 85 and a comparison outlet slot 88, a lateral slot 81 is also arranged inside the inner regulating cavity 8, the lateral slot 81 is connected to the analysis flow slot 84, a flow bottom slot 840 is arranged at the bottom of the analysis flow slot 84, a movable bottom block 17 is slidably connected to the inner wall of the analysis flow slot 84, and a movable bottom block 17 is arranged between the movable bottom block 17 and the bottom of the inner wall of the flow bottom slot 840 There is a spring 27, and the movable bottom block 17 is tightly fitted with the bottom of the interface 3 in the initial state, and the spring 27 is in an extended state. A fixed bottom block 12 is fixed to the bottom inner wall of the circulation groove 87, and a fixed top block 11 is fixed to the top inner wall of the circulation groove 87. A synchronous connection chamber 13 is fixedly connected between the fixed bottom block 12 and the fixed top block 11. A number of through holes for circulation are provided on both sides of the protective connection chamber 16 and the synchronous connection chamber 13. Flow baffles 23 are respectively slidably provided on the side of the fixed bottom block 12 and the movable bottom block 17 away from the outlet connecting pipe 2. The outer peripheral wall of each flow baffle 23 is fixedly connected with a connecting strip 231, and the two connecting strips 231 are integrally formed with the linkage rod 22. The inner regulating cavity 8 is also provided with a movable groove 89, and the linkage rod 22 slides in the movable groove 89. A guiding mechanism is also provided on the side of the regulating pipe fitting 4 close to the inlet connecting pipe 5, and an indicating mechanism is also provided on the side of the regulating pipe fitting 4 close to the outlet connecting pipe 2.

[0033] Regarding the synchronous connection chamber 13, it should be clear that the synchronous connection chamber 13 in this embodiment only provides a flow effect that plays the same role as the protective connection chamber 16 connected to the analysis flow slot 84, and the part of the interface 3 located inside the analysis flow slot 84 has the same function as the fixed top block 11, so that the entire comparison flow slot 87 is completely consistent with the flow shape inside the analysis flow slot 84, thereby ensuring the accuracy of the sensor probe 24 in detecting hydrogen sulfide.

[0034] The guide mechanism includes a guide plate 10, a rotating shaft 101 and a connecting plate 9. The rotating shaft 101 is fixedly connected to the guide plate 10. The rotating shaft 101 is rotatably connected to the inside of the regulating pipe 4. The connecting plate 9 is fixed to an outer wall of one side of the movable bottom block 17. A strip groove 82 is also provided in the inner regulating cavity 8. The strip groove 82 is connected to the lateral groove 81. The connecting plate 9 is integrally formed with an extension strip 91. The extension strip 91 is provided with a screw hole 910. The extension strip 91 slides in the strip groove 82. A transmission groove 820 is also provided at the bottom of the strip groove 82. A transmission block 911 is integrally formed at the bottom of the extension strip 91. The transmission block 911 slides in the transmission groove 820. An outer wall of the transmission block 911 close to the inlet connecting pipe 5 is provided with a bevel tooth groove 9110. A bevel tooth semi-ring 1011 is sleeved and fixed on the outer peripheral wall of the rotating shaft 101. The bevel tooth semi-ring 1011 is meshed with the bevel tooth groove 9110.

[0035] Specifically, when the movable bottom block 17 drives the connecting plate 9 to move downward, the rotating shaft 101 can be driven to rotate through the bevel tooth groove 9110 of the transmission block 911, thereby changing the direction of the guide plate 10, so that the analysis inlet slot 83 and the inlet connecting pipe 5 are in a connected state, and the gas to be analyzed directly enters the analysis flow slot 84.

[0036] The indicating mechanism includes a transparent plate 18, a blocking plate 14 and a blocking plate 2 15. The transparent plate 18 is fixedly arranged above the regulating tube 4. The regulating tube 4 is also engraved with scale lines arranged in a semicircular arc shape for observing the changes in the rotational positions of the blocking plates 14 and 15. A central support shaft 31 is fixed inside the regulating tube 4. A movable sleeve column 30 is movably sleeved on the outside of the central support shaft 31. The blocking plates 14 and 15 are both movably sleeved on the central support shaft 31. The outer peripheral wall of the movable sleeve column 30 is integrally formed with an intermediate plate 29. A plurality of bending springs 32 are respectively provided between the blocking plates 14 and 15 and the intermediate plates 29.

[0037] Specifically, when the baffle plate 14 and the baffle plate 2 15 are deflected, the deflection angle can be indicated by the transparent plate 18, and the flow rate per unit time can be indicated by its deflection angle, which can be specifically measured by measuring the outlet connecting pipe 2 or the pipeline connected to the rear. The deflection angle is positively correlated with the flow rate per unit time. When the flow area of ​​the protective connecting chamber 16 or the synchronous connecting chamber 13 is adjusted by the flow baffle 23 to control the deflection angle, the flow speed of the comparison flow slot 87 and the analysis flow slot 84 is maintained to be the same, and the sensor probe 24 accurately senses the hydrogen sulfide content.

[0038] Specifically, a connecting support block 25 is integrally formed in the interface 3, and a socket 33 is provided in the connecting support block 25. The sensor probe 24 can be plugged into the socket 33. In the initial state, when the regulating pipe 4 is not detected, a protective cover 34 is sleeved on the outside of the interface 3 to further isolate the inside and outside of the regulating pipe 4.

[0039] Among them, when the protective connecting cavity 16 is inserted into the interface 3 and does not contact the movable bottom block 17, the fluid will pass through the through hole of the protective connecting cavity 16 and contact the sensor probe 24 until the movable bottom block 17 is pushed open and the spring 27 at the bottom is compressed. During the whole process, the regulating pipe 4 is always isolated from the outside world.

[0040] Specifically, a resistance screw 19 is inserted into the top of the regulating tube 4, and the resistance screw 19 is threadedly inserted into the extension bar 91. The resistance screw 19 is driven by the extension bar 91 to resist the linkage rod 22; the top of the regulating tube 4 is rotatably connected to an active sleeve 20, and a limited sliding groove 200 is arranged inside the active sleeve 20. The resistance screw 19 slides inside the limited sliding groove 200, and the active sleeve 20 is fixedly sleeved with a gear ring 21 on the outside; the top of the regulating tube 4 is rotatably connected to a connecting shaft 71, and the connecting shaft 71 is sleeved with active teeth 28 on the outside, and the active teeth 28 are meshed with the gear ring 21. A protective shell 6 is fixedly provided on the top of the regulating tube 4, and the protective shell 6 is integrally formed with a shaft protection shell 61, and the shaft protection shell 61 is sleeved on the outside of the active sleeve 20, and the connecting shaft 71 passes through the protective shell 6 and is fixed with a rotating handle 7.

[0041] Among them, the protective shell 6, the shaft protective shell 61 and the transparent plate 18 all have a certain sealing effect through conventional sealing connection methods, ensuring that the connecting parts inside the regulating pipe 4 are always isolated from the outside world when the entire regulating pipe 4 is in the state of transmission and circulation.

[0042] A U-shaped through groove 170 and a connecting port 171 are provided on one side of the movable bottom block 17 and the fixed bottom block 12 near the flow baffle 23. The U-shaped through groove 170 and the connecting port 171 are connected. The U-shaped through groove 170 is used for the corresponding flow baffle 23 to slide through, and the connecting port 171 is used for the corresponding connecting strip 231 to slide through.

[0043] Based on the above technical features, this implementation scheme takes the GLH100 mining hydrogen sulfide sensor for online analysis of hydrogen sulfide content in natural gas pipelines as an example, and provides an implementation scheme: first, the inlet connecting pipe 5 and the outlet connecting pipe 2 of the regulating pipe 4 are connected to the natural gas pipeline transmission pipeline. Initially, the protective cover 34 covers the interface 3, the movable bottom block 17 closes the bottom of the interface 3, and the guide plate 10 closes the analysis inlet slot 83. The natural gas passes through the inlet connecting pipe 5, the comparison inlet slot 86, the comparison flow slot 87, the comparison outlet slot 88 and the outlet connecting pipe 2 in sequence. At this time, the deflected blocking plate 14 does not close the comparison outlet slot 88. Under the active effect of the bending spring 32 and the middle plate 29, the blocking plate 2 15 tightly closes the analysis outlet slot 85. The entire regulating pipe 4 is in a normal natural gas circulation state. The deflection of the blocking plate 14 also indicates the corresponding unit flow rate through the transparent plate 18. Pull out the protective cover 34, insert the hydrogen sulfide sensor 1 into the interface 3, and the protective connecting cavity 16 and the sensor probe 24 are deeply analyzed in the flow slot 84. The first process connection plate 9 is moved by the movable bottom block 17, and the transmission block 911 meshes with the helical tooth half ring 1011 through the helical tooth groove 9110, so that the guide plate 10 deflects and closes the comparison inlet groove 86. At this time, the natural gas passes through the inlet connecting pipe 5, the analysis inlet groove 83, the analysis flow groove 84, the analysis outlet groove 85 and the outlet connecting pipe 2 in sequence. The blocking plate 2 15 is automatically opened by the squeeze of the circulating gas, and the blocking plate 1 14 closes the comparison outlet groove 88. However, at this time, the rotation deflection degree of the blocking plate 2 15 is different from the deflection degree of the blocking plate 14. The rotation is inconsistent. By adjusting the top handle 7, the active tooth 28 meshes and drives the abutting screw 19 to rotate and move downward, squeezing the linkage rod 22, so that the cross-sectional area of ​​the flow through hole of the flow baffle 23 blocking the protective connecting chamber 16 changes, thereby changing the deflection degree of the baffle plate 2 15 to make it consistent with the deflection angle of the baffle plate 1 14 in the initial state. At this time, the sensor probe 24 measures the hydrogen sulfide content of the normal natural gas unit flow, making the data analysis transmitted to the hydrogen sulfide sensor 1 more accurate.

[0044] It should be further clarified that the present invention is aimed at the commonly used plug-in method of mining hydrogen sulfide sensors to accurately indicate the hydrogen sulfide content per unit flow rate, and through the flexible adjustment function of the control pipe 4, the hydrogen sulfide content of different unit flow rates can be analyzed with a specified unit flow rate, and the hydrogen sulfide per specified unit time can be used to reflect the average content of hydrogen sulfide in the entire transmission process, so that the device can be used more flexibly.

[0045] What can be further implemented is that when the device is in use, the hydrogen sulfide sensor 1 is directly inserted into the interface 3, and can be connected to the hydrogen sulfide sensor 1 via Bluetooth or other wireless connections to form data interaction, so as to display the inside of the control pipe 4 in real time at a specified flow rate or flow velocity, and accurately display the hydrogen sulfide content.

[0046] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An online hydrogen sulfide analyzer, comprising a hydrogen sulfide sensor (1), a regulating pipe (4), and an outlet connecting pipe (2) and an inlet connecting pipe (5) connected to both ends of the regulating pipe (4). It is characterized in that The regulating pipe (4) is provided with an inner regulating cavity (8) inside, the top of the regulating pipe (4) is fixedly provided with a waiting interface (3), the bottom of the hydrogen sulfide sensor (1) is fixedly provided with a protective connecting cavity (16) and a sensor probe (24), the protective connecting cavity (16) is plugged into the waiting interface (3) and extends to the inside of the analysis flow slot (84), the inner regulating cavity (8) is symmetrically provided with an analysis inlet slot (83) and a comparison inlet slot (86), an analysis flow slot (84) and a comparison flow slot (87) and an analysis outlet groove (85) and a comparison outlet groove (88), the inner regulating cavity (8) is also provided with a lateral groove (81), the lateral groove (81) is connected to the analysis flow groove (84), the bottom of the analysis flow groove (84) is provided with a flow bottom groove (840), the inner wall of the analysis flow groove (84) is slidably connected with a movable bottom block (17), a spring (27) is provided between the movable bottom block (17) and the bottom of the inner wall of the flow bottom groove (840), the movable bottom block In the initial state, (17) is tightly fitted with the bottom of the interface (3), and the spring (27) is in an extended state. A fixed bottom block (12) is fixed to the bottom inner wall of the comparison flow groove (87), and a fixed top block (11) is fixed to the top inner wall of the comparison flow groove (87). A synchronous connection cavity (13) is fixedly connected between the fixed bottom block (12) and the fixed top block (11). The fixed bottom block (12) and the movable bottom block (17) are respectively provided with flow slidably disposed on the side away from the outlet connection pipe (2). A flow baffle (23), the outer peripheral wall of each of the flow baffles (23) is fixedly connected with a connecting strip (231), the two connecting strips (231) and the linkage rod (22) are integrally formed, the inner regulating cavity (8) is further provided with a movable groove (89), the linkage rod (22) is located in the movable groove (89) and slides, a guide mechanism is further provided on a side of the regulating pipe (4) close to the inlet connecting pipe (5), and an indication mechanism is further provided on a side of the regulating pipe (4) close to the outlet connecting pipe (2);The guide mechanism comprises a guide plate (10), a rotating shaft (101) and a connecting plate (9); the rotating shaft (101) is fixedly connected to the guide plate (10); the rotating shaft (101) is rotatably connected to the inside of the regulating pipe (4); the connecting plate (9) is fixed to an outer wall of one side of the movable bottom block (17); a groove (82) is further provided in the inner regulating cavity (8); the groove (82) is communicated with the lateral groove (81); and the connecting plate (9) is integrally formed with An extension bar (91), the extension bar (91) being provided with a screw hole (910), the extension bar (91) being located in the bar groove (82) and being slidable, the bottom of the bar groove (82) being provided with a transmission groove (820), the bottom of the extension bar (91) being integrally formed with a transmission block (911), the transmission block (911) being located in the transmission groove (820) and being slidable, and an outer wall of a side of the transmission block (911) close to the inlet connecting pipe (5) being provided with an oblique tooth groove (9110), The outer peripheral wall of the rotating shaft (101) is sleeved and fixed with a helical tooth half ring (1011), and the helical tooth half ring (1011) meshes with the helical tooth groove (9110); the indicating mechanism comprises a transparent plate (18), a blocking plate 1 (14) and a blocking plate 2 (15); the transparent plate (18) is fixedly provided above the regulating tube (4), and the regulating tube (4) is also engraved with semicircular arc-shaped scale lines for observing the rotational position of the blocking plate 1 (14) and the blocking plate 2 (15). The control pipe (4) is provided with a central support shaft (31) fixed inside, the central support shaft (31) is externally movably sleeved with a movable sleeve column (30), the blocking plate 1 (14) and the blocking plate 2 (15) are both movably sleeved on the central support shaft (31), the outer peripheral wall of the movable sleeve column (30) is integrally formed with an intermediate plate (29), and a plurality of bending springs (32) are respectively provided between the blocking plate 1 (14) and the blocking plate 2 (15) and the intermediate plate (29). ; 2. An online hydrogen sulfide analyzer according to claim 1, Features: A connection support block (25) is integrally formed in the interface (3), a plug hole (33) is provided in the connection support block (25), and the sensor probe (24) can be plugged into the plug hole (33). In an initial state, when the inside of the regulating pipe (4) is not detected, a protective cover (34) is sleeved on the outside of the interface (3) to further isolate the inside and outside of the regulating pipe (4).

3. An online hydrogen sulfide analyzer according to claim 1, Features: A resisting screw (19) is inserted into the top of the regulating pipe (4); the resisting screw (19) is threadably inserted into the extension bar (91); the resisting screw (19) is driven by the extension bar (91) to resist the linkage rod (22).

4. An online hydrogen sulfide analyzer according to claim 3, Features: The top of the regulating pipe (4) is rotatably connected to an active sleeve (20), a limiting slide groove (200) is provided inside the active sleeve (20), the abutting screw (19) slides inside the limiting slide groove (200), and a gear ring (21) is fixedly sleeved outside the active sleeve (20).

5. An online hydrogen sulfide analyzer according to claim 4, Features: The top of the regulating pipe (4) is rotatably connected to a connecting shaft (71), the outside of the connecting shaft (71) is sleeved with a driving tooth (28), the driving tooth (28) meshes with the gear ring (21), a protective shell (6) is fixedly provided on the top of the regulating pipe (4), the protective shell (6) is integrally formed with a shaft protection shell (61), the shaft protection shell (61) is sleeved on the outside of the driving sleeve column (20), and the connecting shaft (71) passes through the protective shell (6) and is fixed with a rotating handle (7).

6. An online hydrogen sulfide analyzer according to claim 1, Features: A U-shaped through groove (170) and a connecting port (171) are provided on one side of the movable bottom block (17) and the fixed bottom block (12) close to the flow baffle (23); the U-shaped through groove (170) and the connecting port (171) are connected; the U-shaped through groove (170) is used for the corresponding flow baffle (23) to slide through, and the connecting port (171) is used for the corresponding connecting strip (231) to slide through.

Images