CN216082477U - Pressure-bearing type laser hydrogen sulfide on-line monitoring and measuring tank - Google Patents
Pressure-bearing type laser hydrogen sulfide on-line monitoring and measuring tank Download PDFInfo
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- CN216082477U CN216082477U CN202122259448.3U CN202122259448U CN216082477U CN 216082477 U CN216082477 U CN 216082477U CN 202122259448 U CN202122259448 U CN 202122259448U CN 216082477 U CN216082477 U CN 216082477U
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Abstract
The utility model discloses a pressure-bearing laser hydrogen sulfide on-line monitoring and measuring pool which comprises a valve body arranged at the bottom, a middle disc hermetically connected with the upper part of the valve body, a laser detection chamber arranged in the valve body and connected with the lower part of the middle disc, and a laser receiving and transmitting device arranged at the upper part of the middle disc. The advantages are that: the laser window of the device adopts a sapphire window lens to seal and bear the pressure of 5Mpa at the maximum, and can be directly installed on a gas high-pressure pipeline in situ, so that the concentration of hydrogen sulfide in gas is really monitored on line in real time. The outer shell of the outer pipe of the air chamber adopts a multi-layer metal sintering net with keels, so that impurities with the size of more than 3 microns in fuel gas can be effectively filtered, and the maintenance frequency of equipment is greatly reduced; the device does not need to be accessed into a complex pretreatment system, and has small volume, low cost and reliable operation; the measurement is not disturbed by other components in the measurement environment; the device is provided with a flange sealing assembly, and can be conveniently connected into a gas pipeline.
Description
Technical Field
The utility model relates to the field of monitoring of gas poison, in particular to a pressure-bearing type laser hydrogen sulfide online monitoring and measuring pool.
Background
Hydrogen sulfide is an inorganic compound with the molecular formula H2S, the molecular weight is 34.076, the product is a flammable acidic gas under standard conditions, the product is colorless, smelly egg smell exists at low concentration, sulfur smell exists at very low concentration, the product is extremely toxic, and a small amount of high-concentration hydrogen sulfide absorbed by the product can be fatal in a short time. Low concentrations of hydrogen sulfide have an effect on the eye, respiratory system and central nervous system. The hydrogen sulfide is corrosive to the natural gas pipeline, and the service life of the pipeline and equipment is shortened, so that the hydrogen sulfide monitoring method has great significance for monitoring the hydrogen sulfide.
At present, the detection principle of hydrogen sulfide in a natural gas pipeline is as follows: the method is characterized in that a tunable semiconductor laser absorption spectrum technology is adopted for measuring gas, a tunable laser is used as a light source, a laser beam with a specific wavelength is emitted to penetrate through the gas to be measured, an optical signal is converted into an electric signal through a detector receiving end, and the concentration of hydrogen sulfide in the gas to be measured is monitored quickly and accurately with high sensitivity by analyzing the attenuation of laser light intensity caused by the absorption of hydrogen sulfide molecules in the gas to be measured.
In recent years, tunable laser absorption spectroscopy measurement technology is developed rapidly in the field of fuel gas, wherein detection of hydrogen sulfide gas in the fuel gas is successfully applied, but when existing equipment is used for detecting the concentration of hydrogen sulfide in the fuel gas, an opening is firstly opened on a natural gas pipeline to obtain gas, then the gas is introduced into a measurement pool to complete detection after pressure reduction and filtration, and finally the detected fuel gas is pressurized and then re-injected into a main fuel gas pipeline.
The existing detection device has the following defects: 1, the equipment is not high-pressure resistant, and the equipment cannot be directly arranged on a gas pipeline for detection (the pressure in the gas pipeline is high); 2. because impurities such as floating ash exist in the gas pipeline, after the gas pipeline is used for a period of time, if the pretreatment system is not maintained in time, optical components in the measuring tank are easily polluted, and the measuring precision and the service performance of the analyzer are seriously influenced. At present, the traditional maintenance mode is to regularly contact the factory technology to maintain the pretreatment of the equipment, but the maintenance mode needs a longer period and affects the normal work of a user; 3. the instrument can not bear high pressure, and the addition of a pretreatment system makes the equipment large in size, difficult to install and maintain and high in cost of a single set of equipment; 4. by adopting bypass drainage, trace hydrogen sulfide in the fuel gas can be adsorbed to the outer wall of the pipeline, and the measurement result has distortion.
The hydrogen sulfide gas belongs to high lethal toxic gas, and the life safety of a user is seriously threatened due to the distorted detection result. In view of the above, some companies have developed a simple to maintain pretreatment system that can be disassembled on site to replace the filter cartridge while cleaning the optics inside the measurement cell. However, after the cleaning is completed, the optical device needs to be readjusted after being installed back, so this method is limited to the sample gas chamber with a simple optical path, for example, the emitting end and the receiving end of the optical path are in opposite emission or single reflection, and for the case of a complex optical path, normal maintenance cannot be achieved. In addition, the instrument can not bear high pressure, and the pretreatment system is added, so that the equipment is large in size and difficult to install and maintain.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pressure-bearing laser hydrogen sulfide on-line monitoring and measuring pool aiming at the defects in the prior art, so as to solve the defects of the traditional on-line monitoring equipment for hydrogen sulfide gas in a natural gas pipeline in the prior art and make up the defects of the traditional on-line monitoring equipment for laser hydrogen sulfide.
The technical scheme is as follows: a pressure-bearing type laser hydrogen sulfide on-line monitoring and measuring pool comprises a valve body arranged at the bottom, a middle disc hermetically connected with the upper part of the valve body, a laser detection chamber arranged in the valve body and connected with the lower part of the middle disc, and a laser receiving and transmitting device arranged at the upper part of the middle disc;
the valve body is internally provided with a cavity which is communicated with the left and the right, the upper part and the lower part of the cavity are vertically connected with a channel communicated with the cavity, the top of the valve body is connected with the middle disc in a sealing way, the upper part and the bottom of the middle disc are respectively provided with an upper annular cavity and a lower annular cavity, the upper annular cavity is internally provided with a stepped hole which is communicated with the middle disc, the upper part in the stepped hole is provided with a window gland nut, the lower part of the window gland nut is provided with a window lens, the lower part of the window lens is provided with a window lower gasket which is pressed in the stepped hole, a window upper gasket is arranged between the window lens and the window gland nut, the lower annular cavity is internally and fixedly provided with a hole reflector, the hole position of the hole reflector corresponds to the stepped hole, and the lower annular cavity is provided with the laser detection chamber in a sealing way, the laser detection chamber comprises a non-porous reflector arranged at the lower part of the laser detection chamber.
Furthermore, the laser detection chamber also comprises an air chamber inner tube and an air chamber outer tube arranged on the periphery of the air chamber inner tube, and the nonporous reflector is arranged at the bottom of the air chamber inner tube;
the top of the air chamber outer pipe is hermetically connected with the lower part of the middle disc, the air chamber outer pipe surrounds the reflector with holes inside, the surface of the air chamber outer pipe is provided with filtering holes, and the air chamber outer pipe penetrates through the cavity up and down;
the top of the inner tube of the air chamber is hermetically connected with the lower part of the middle disc, and the surface of the inner tube of the air chamber is provided with a plurality of channels which enable the filter holes to be communicated with the nonporous reflector.
Further, an inner tube through hole is formed in the middle of the bottom of the inner tube of the air chamber, a nonporous reflector fixing device is installed in the inner tube through hole and comprises a fixing groove, a nonporous reflector sealing gasket arranged on the upper surface of the bottom in the fixing groove and an adjusting tube fixedly connected with the outer bottom of the fixing groove, the adjusting tube is installed in the inner tube through hole through threads, the nonporous reflector is installed in the fixing groove, and the upper part of the nonporous reflector is fixed through an annular plate installed on the upper edge of the fixing groove;
the bottom of the inner tube of the air chamber is fixedly connected with a hollow tube, the hollow tube is arranged on the periphery of the adjusting tube, and a fixing screw penetrates through the bottom of the outer tube of the air chamber and extends into the hollow tube;
at least three imperforate reflector adjusting screws are arranged at the bottom of the inner tube of the air chamber, the imperforate reflector adjusting screws are uniformly arranged around the hollow tube, and the tops of the imperforate reflector adjusting screws are pressed at the outer bottoms of the fixing grooves.
Furthermore, a plurality of inner tube fixing screws are arranged on the periphery of the upper part of the inner tube of the air chamber in a penetrating way, and the inner tube fixing screws are arranged on the periphery of the lower annular cavity body; the top of the outer pipe is connected with the middle disc through an outer pipe sealing gasket;
the bottom of the valve body is provided with an outer tube maintenance hole with the width larger than that of the outer tube of the air chamber, and the outer tube maintenance hole is sealed by a cover plate.
Furthermore, a circle of flange is arranged around the upper part of the compression nut, a circle of flange sealing gasket is arranged on the lower part of the flange, and the lower part of the flange sealing gasket is in sealing contact with the edge of the top of the stepped hole.
Further, the pressure-bearing type laser hydrogen sulfide on-line monitoring measuring cell further comprises an upper shell, the upper shell is mounted at the upper part of the upper annular cavity, and the upper shell surrounds the laser receiving and transmitting device and the window lens; the periphery of the upper annular cavity is provided with a circle of upper shell sealing gasket, and the upper shell and the upper annular cavity are sealed through the upper shell sealing gasket.
Further, the laser transceiver device comprises a transmitter seat, a transmitter adjusting seat arranged at the bottom of the transmitter seat, a base arranged at the lower part of the transmitter adjusting seat, and a receiver seat arranged inside the base; the transmitter base is provided with an optical fiber connector, the lower part of the base is provided with a base groove with a downward opening, the receiver base is installed in the base groove, the receiver base is provided with a laser receiver, and the receiver base is provided with a transmitting through hole.
Furthermore, at least three emitter adjusting screws penetrate through the emitter adjusting seat, the bottoms of the emitter adjusting screws are pressed on the upper surface of the base, and a plurality of first springs are arranged between the emitter adjusting seat and the base; the receiver seat on be equipped with three receiver angle adjusting screw at least, the receiver angle adjusting screw other end press on the base, receiver seat one corner one end of installation second spring, the second spring other end install on the base, adjacent both sides installation receiver horizontal position adjusting screw on the base, receiver horizontal position adjusting screw press on the receiver seat, receiver horizontal position adjusting screw set up the both sides at the second spring, the base groove outside be equipped with the baffle, the baffle on be equipped with the baffle hole.
Furthermore, two adjacent edges of the emitter seat are respectively provided with a pair of spring holes, grooves are formed between the spring holes and on two sides of the spring holes, fixing rods are installed in the grooves, the first spring penetrates through each spring hole, and the first spring is installed on the fixing rods.
Further, the bottom of the base is provided with a laser support, and the laser support is arranged in the upper annular cavity.
Compared with the prior art, the utility model has the following advantages:
1. the laser window of the device adopts a sapphire window lens to seal and bear the pressure of 5Mpa at most, and can be directly installed on a gas high-pressure pipeline in situ.
2. The outer pipe of the air chamber adopts a multi-layer metal sintering net with keels, so that impurities with the size of more than 3 mu m in the fuel gas can be effectively filtered, and the equipment maintenance frequency is greatly reduced.
3. The air chamber outer tube is connected with the independent measuring cell main body middle disc in a spinning mode, and when the measuring cell is fixed on a gas pipeline, the outer tube can be detached independently for maintenance (optical components do not need to be detached).
4. The device is provided with a flange sealing component, the assembly is DN50 gate length, the fuel gas pipeline can be conveniently accessed, and the specification of the flange sealing component assembly can be changed correspondingly along with the specification difference of the field fuel gas pipeline.
5. A stainless steel protective cover sealing and fixing interface is reserved on the measuring pool intermediate disc, so that the using environment of the measuring pool can be an outdoor explosion-proof area. The top of the stainless steel protective cover can be connected with an explosion-proof bobbin with common specification, so that the optical fiber and the coaxial wire of the measuring cell can be conveniently led into the instrument.
6. There is a apron measuring cell flange seal assembly bottom, and is serious when measuring cell outer tube deposition, needs to maintain, and sealed apron is dismantled to the accessible, maintains alone measuring cell outer tube, and the operator opens the apron and dismantles the outer tube with a hexagonal spanner and clears up, avoids using the clearance mode of opening its whole dismantlement, consequently can effectively reduce clearance time and the operator's of being convenient for maintenance.
7. Can realize the central distance between two concave surface reflectors through the rotation control screw thread screw in degree of depth, there is three regulation jackscrew in measurement pool inner tube bottom in addition, can finely tune the angle of sclausura concave surface reflector, guarantees that sclausura concave surface reflector and foraminiferous concave surface reflector are coaxial.
8. The measuring cell laser emitter and the laser receiver are fixed on the upper portion of the middle disc through the adjusting frame, the emitter is connected with the laser optical fiber, laser is collimated and then enters the small hole of the porous reflector through the window lens, after multiple reflections inside the measuring cell, the laser is emitted from the small hole of the porous reflector and strikes the laser receiver, and the laser receiver transmits signals to a processing unit electrically connected with the measuring cell through a coaxial cable for processing. The laser transmitter can adjust the transmitting angle through the transmitter adjusting screw, and the laser receiver can adjust the front-back horizontal position and the left-right horizontal position.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2 of the present invention;
FIG. 4 is an enlarged view of section B of FIG. 3 of the present invention;
FIG. 5 is a perspective half sectional view of the present invention;
FIG. 6 is a partial perspective view of the present invention intermediate tray;
FIG. 7 is a partial perspective view of the present invention intermediate tray;
FIG. 8 is a perspective view of the present invention with the combination of the laser holder and the intermediate plate;
FIG. 9 is a perspective view of the top of the present invention;
FIG. 10 is a partial perspective half-section view of a non-porous mirror according to the present invention;
FIG. 11 is a perspective view of the inner tube of the air chamber of the present invention;
FIG. 12 is a perspective view in half section of a non-perforated mirror fixture of the present invention;
fig. 13 is a perspective view of a laser transmitter receiver assembly of the present invention;
fig. 14 is a perspective view of a laser transmitter receiver assembly of the present invention;
FIG. 15 is a perspective view of the combination of the emitter mount, emitter adjustment mount, base, and baffle of the present invention;
FIG. 16 is a perspective view of the combination of the emitter mount, emitter adjustment mount, base, and baffle of the present invention;
fig. 17 is a perspective view of the combination of the transmitter mount, transmitter adjustment mount, base, and receiver mount of the present invention;
FIG. 18 is an interior perspective view of the base well of the present invention;
fig. 19 is a perspective view of a receiver base of the present invention;
FIG. 20 is a schematic view of laser reflection according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-19, the pressure-bearing type laser hydrogen sulfide on-line monitoring and measuring cell comprises a valve body 3 arranged at the bottom, a middle disc 4 hermetically connected with the upper part of the valve body 3, a laser detection chamber arranged inside the valve body 3 and connected with the lower part of the middle disc 4, and a laser transceiver 7 arranged at the upper part of the middle disc 4.
The laser detection device comprises a valve body 3, a left-right through cavity is arranged in the valve body 3, a channel communicated with the cavity is vertically connected to the upper portion and the lower portion of the cavity, the top of the valve body 3 is connected with a middle disc 4 in a sealing mode, an upper annular cavity 230 and a lower annular cavity 430 are respectively arranged on the upper portion and the bottom of the middle disc 4, a stepped hole 42 penetrating through the middle disc 4 is formed in the upper annular cavity 230, a window compression nut 6 is arranged on the upper portion in the stepped hole 42, a window lens 62 is arranged on the lower portion of the window compression nut 6, a window lower gasket 63 is arranged on the lower portion of the window lens 62 and pressed in the plane of the stepped hole 42, a window upper gasket 61 is arranged between the window lens 62 and the window compression nut 6, a hole reflector 43 is fixedly arranged in the lower annular cavity 430, the hole position of the hole reflector 43 corresponds to the stepped hole 42, and a laser detection chamber is arranged in a sealing mode in the lower annular cavity 430.
The laser detection chamber comprises a non-porous reflector 85 arranged at the lower part of the laser detection chamber, an air chamber inner tube 33 and an air chamber outer tube 31 arranged at the periphery of the air chamber inner tube 33, wherein the non-porous reflector 85 is arranged at the bottom of the air chamber inner tube 33; the top of the air chamber outer tube 31 is hermetically connected with the lower part of the middle disc 4, the perforated reflector 43 is surrounded inside the air chamber outer tube 31, the surface of the air chamber outer tube 31 is provided with filtering holes 32, and the air chamber outer tube 31 penetrates through the cavity 3 up and down; the top of the inner tube 33 of the air chamber is hermetically connected with the lower part of the middle disk 4, and the surface of the inner tube 33 of the air chamber is provided with a plurality of channels which enable the filter holes 32 to be communicated with the nonporous reflecting mirror 85.
The bottom of the valve body 3 is provided with an outer tube maintenance hole having a width larger than that of the outer tube 31 of the air chamber, which is sealed by a cover plate 34.
An inner tube through hole 332 is formed in the middle of the bottom of the inner tube 33 of the air chamber, a non-porous reflector fixing device 8 is installed in the inner tube through hole 332, the non-porous reflector fixing device 8 comprises a fixing groove 82, a non-porous reflector sealing gasket 83 arranged on the upper surface of the inner bottom of the fixing groove 82, and an adjusting tube 87 fixedly connected with the outer bottom of the fixing groove 82, the adjusting tube 87 is installed in the inner tube through hole 332 through threads, a non-porous reflector 85 is installed in the fixing groove 82, and the upper portion of the non-porous reflector 85 is fixed through an annular plate 84 installed on the upper edge of the fixing groove 82.
The bottom of the air chamber inner pipe 33 is fixedly connected with a hollow pipe 333, the hollow pipe 333 is arranged on the periphery of the adjusting pipe 87, the bottom of the air chamber outer pipe 31 penetrates through a fixing screw 330, and the fixing screw 330 is installed inside the hollow pipe 333 in an extending mode.
At least three imperforate reflector adjusting screws 86 are arranged at the bottom 33 of the air chamber, the imperforate reflector adjusting screws 86 are uniformly arranged around the hollow pipe 333, and the tops of the imperforate reflector adjusting screws 86 are pressed at the outer bottoms of the fixing grooves 82.
A plurality of inner pipe fixing screws 37 are installed on the periphery of the upper part of the inner pipe 33 of the air chamber in a penetrating way, and the inner pipe fixing screws 37 are installed on the periphery of the lower annular cavity 430; the top of the outer tube 31 of the air chamber is connected with the middle disc 4 through an outer tube sealing gasket 41.
A peripheral flange is provided around the upper portion of the compression nut 6, and a peripheral flange packing 64 is provided on the lower portion of the flange, and the lower portion of the flange packing 64 is in sealing contact with the top edge of the stepped hole 42.
The measuring cell also comprises an upper shell 2, wherein the upper shell 2 is arranged at the upper part of the upper annular cavity 230, and the upper shell 2 surrounds the laser transceiver 7 and the window lens 62; the periphery of the upper annular cavity 230 is provided with a circle of upper groove, a circle of upper shell sealing gasket 23 is arranged in the upper groove, and the upper shell 2 and the upper annular cavity 230 are sealed through the upper shell sealing gasket 23.
The laser transceiver device 7 comprises a transmitter base 70, a transmitter adjusting base 71 arranged at the bottom of the transmitter base 70, a base arranged at the lower part of the transmitter adjusting base 71, and a receiver base 78 arranged inside the base 74; the transmitter base 70 is provided with an optical fiber connector 701, the lower portion of the base 74 is provided with a base groove which is opened downwards, the receiver base 78 is installed in the base groove, the receiver base 78 is provided with a laser receiver 780, and the receiver base is provided with a transmitting through hole 781.
At least three emitter adjusting screws 72 are arranged in the emitter adjusting seat 71 in a penetrating mode, the bottoms of the emitter adjusting screws 72 are pressed on the upper surface of the base 74, and a plurality of first springs 710 are arranged between the emitter adjusting seat 71 and the base 74; at least three receiver angle adjusting screws 79 are arranged on the receiver seat 78, the other ends of the receiver angle adjusting screws 79 are pressed on the base 74, one end of a second spring 782 is installed at one corner of the receiver seat 78, the other end of the second spring 782 is installed on the base 74, receiver horizontal position adjusting screws 75 are installed on two adjacent sides of the base 74, the receiver horizontal position adjusting screws 75 are pressed on the receiver seat 78, the receiver horizontal position adjusting screws 75 are arranged on two sides of the second spring 782, a baffle 77 is arranged outside a groove of the base, and a baffle hole is formed in the baffle 77.
Two adjacent edges of the emitter seat 78 are respectively provided with a pair of spring holes, grooves are arranged between the spring holes and on two sides of the spring holes, a fixing rod 73 is arranged in each groove, a first spring 710 penetrates through each spring hole, and the first springs are arranged on the fixing rods 73.
The bottom of the base 74 mounts the laser holder 22, and the laser holder 22 is mounted inside the upper annular cavity 230.
The lower part of the middle disc 4 is fixed on a reserved flange of the valve body 3, the outer tube 31 of the air chamber is inserted into the valve body 3, the left channel and the right channel of the valve body 3 are connected with a fuel gas pipeline through flange plates, and hydrogen sulfide in the pipeline passes through the filter holes 32 through free diffusion and enters a laser detection chamber for analysis.
Wherein, the gas chamber outer tube 31 adopts the metal sintering net of taking the fossil fragments, can use under high pressure environment for a long time to carry out lasting effective filtration with the inside impurity of gas and greasy dirt, guarantee that the inside lens of measuring cell does not receive the pollution.
Laser is accessed to a laser transceiver on the upper portion of the measuring cell through an optical fiber for collimation, the collimated laser enters a laser detection chamber through a window lens 62 for multiple reflection, the multiple reflection of the laser is realized through a porous reflector 43 and a non-porous reflector 85 in the measuring cell, as shown in fig. 20, a small hole of the porous reflector 43 is injected, the laser and the non-porous reflector 85 reflect the laser, and the reflected light after multiple reflection is emitted to a laser receiver 780 on the upper portion of the measuring cell from a small hole of the porous reflector 43.
The sealing mode of the window lens 62 can be fluorine rubber ring press sealing (or a sapphire window sheet and an air chamber can be welded together), and the maximum pressure resistance can reach 5 MPa.
The reflector 43 with holes is arranged in a groove reserved on the upper part of the intermediate disc 4 and fixed by a pressing ring 46, the reflector 85 without holes is fixed at the bottom of the inner tube 33 of the air chamber, and the top of the inner tube 33 of the air chamber and the intermediate disc 4 are fixed by screws. The surfaces of the porous reflector 43 and the nonporous reflector 85 in the measuring cell are plated with AR high reflection films, and the reflectivity is as high as 99% (1590 nm). The perforated reflector 43 and the intermediate disk 4 are sealed by an O-shaped sealing ring, and the non-perforated reflector sealing gasket 83 is an O-shaped sealing ring and is made of fluororubber.
The incident angle of laser is adjusted by adjusting the emitter adjusting seat 71, three screws are adopted for adjustment according to the principle that a triangle determines a unique plane, the height of the emitter adjusting screw 72 is rotated, and the first spring 710 always keeps a downward pulling acting force to fix the emitter adjusting seat 71; the front-back horizontal position and the left-right horizontal position of the receiver seat 78 are adjusted by adjusting the screwing amount of the two receiver horizontal position adjusting screws 75, the acting force of the second spring 782 is always concentrated at one corner of the receiver seat 78, and the positions of the receiver horizontal position adjusting screws 75 at two sides adjacent to the corner can be adjusted by rotating; the height and angle of the receiver seat 78 are finely adjusted by adjusting the amount of screwing of the three receiver angle adjusting screws 79 according to the principle that a triangle defines a unique plane.
The air chamber inner pipe 33 is connected with the adjusting pipe 87 through threads, a gap is arranged between the threads of the inner pipe through hole 332 and the adjusting pipe 87, the adjusting pipe 87 can slightly swing in the inner pipe through hole 332 and can be connected with each other through threads, the distance between the imperforate reflector 85 and the perforated reflector 43 is adjusted through rotating the adjusting pipe 87, three imperforate reflector adjusting screws 86 are adopted to be screwed and then pressed at the bottom of the imperforate reflector fixing device 8, the angle of the imperforate reflector 85 is adjusted, and the structure and the connection relation which are not mentioned are common knowledge.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a pressure-bearing formula laser hydrogen sulfide on-line monitoring measuring cell which characterized in that:
the device comprises a valve body arranged at the bottom, a middle disc hermetically connected with the upper part of the valve body, a laser detection chamber arranged in the valve body and connected with the lower part of the middle disc, and a laser transceiver arranged at the upper part of the middle disc;
the valve body is internally provided with a cavity which is communicated with the left and the right, the upper part and the lower part of the cavity are vertically connected with a channel communicated with the cavity, the top of the valve body is connected with the middle disc in a sealing way, the upper part and the bottom of the middle disc are respectively provided with an upper annular cavity and a lower annular cavity, the upper annular cavity is internally provided with a stepped hole which is communicated with the middle disc, the upper part in the stepped hole is provided with a window gland nut, the lower part of the window gland nut is provided with a window lens, the lower part of the window lens is provided with a window lower gasket which is pressed in the stepped hole, a window upper gasket is arranged between the window lens and the window gland nut, the lower annular cavity is internally and fixedly provided with a hole reflector, the hole position of the hole reflector corresponds to the stepped hole, and the lower annular cavity is provided with the laser detection chamber in a sealing way, the laser detection chamber comprises a non-porous reflector arranged at the lower part of the laser detection chamber.
2. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 1, characterized in that: the laser detection chamber also comprises an air chamber inner tube and an air chamber outer tube arranged on the periphery of the air chamber inner tube, and the nonporous reflector is arranged at the bottom of the air chamber inner tube;
the top of the air chamber outer pipe is hermetically connected with the lower part of the middle disc, the air chamber outer pipe surrounds the reflector with holes inside, the surface of the air chamber outer pipe is provided with filtering holes, and the air chamber outer pipe penetrates through the cavity up and down;
the top of the inner tube of the air chamber is hermetically connected with the lower part of the middle disc, and the surface of the inner tube of the air chamber is provided with a plurality of channels which are communicated with the non-porous reflector through the filter holes.
3. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 2, characterized in that: the non-porous reflector fixing device comprises a fixing groove, a non-porous reflector sealing gasket arranged on the upper surface of the bottom in the fixing groove and an adjusting pipe fixedly connected with the outer bottom of the fixing groove, the adjusting pipe is arranged in the inner pipe through hole through threads, the non-porous reflector is arranged in the fixing groove, and the upper part of the non-porous reflector is fixed through an annular plate arranged on the upper edge of the fixing groove;
the bottom of the inner tube of the air chamber is fixedly connected with a hollow tube, the hollow tube is arranged on the periphery of the adjusting tube, and a fixing screw penetrates through the bottom of the outer tube of the air chamber and extends into the hollow tube;
at least three imperforate reflector adjusting screws are arranged at the bottom of the inner tube of the air chamber, the imperforate reflector adjusting screws are uniformly arranged around the hollow tube, and the tops of the imperforate reflector adjusting screws are pressed at the outer bottoms of the fixing grooves.
4. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 3, characterized in that: a plurality of inner pipe fixing screws are arranged on the periphery of the upper part of the inner pipe of the air chamber in a penetrating way, and the inner pipe fixing screws are arranged on the periphery of the lower annular cavity body; the top of the outer pipe is connected with the middle disc through an outer pipe sealing gasket;
the bottom of the valve body is provided with an outer tube maintenance hole with the width larger than that of the outer tube of the air chamber, and the outer tube maintenance hole is sealed by a cover plate.
5. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 4, characterized in that: a circle of flange is arranged around the upper part of the compression nut, a circle of flange sealing gasket is arranged on the lower part of the flange, and the lower part of the flange sealing gasket is in sealing contact with the edge of the top of the stepped hole.
6. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 5, characterized in that: the pressure-bearing laser hydrogen sulfide on-line monitoring and measuring pool further comprises an upper shell, wherein the upper shell is mounted at the upper part of the upper annular cavity and surrounds the laser receiving and transmitting device and the window lens; the periphery of the upper annular cavity is provided with a circle of upper shell sealing gasket, and the upper shell and the upper annular cavity are sealed through the upper shell sealing gasket.
7. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell according to any one of claims 1 to 6, characterized in that: the laser transceiver device comprises a transmitter seat, a transmitter adjusting seat arranged at the bottom of the transmitter seat, a base arranged at the lower part of the transmitter adjusting seat and a receiver seat arranged in the base; the transmitter base is provided with an optical fiber connector, the lower part of the base is provided with a base groove with a downward opening, the receiver base is installed in the base groove, the receiver base is provided with a laser receiver, and the receiver base is provided with a transmitting through hole.
8. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 7, characterized in that: the emitter adjusting seat is provided with at least three emitter adjusting screws in a penetrating way, the bottoms of the emitter adjusting screws are pressed on the upper surface of the base, and a plurality of first springs are arranged between the emitter adjusting seat and the base; the receiver seat on be equipped with three receiver angle adjusting screw at least, the receiver angle adjusting screw other end press on the base, receiver seat one corner one end of installation second spring, the second spring other end install on the base, adjacent both sides installation receiver horizontal position adjusting screw on the base, receiver horizontal position adjusting screw press on the receiver seat, receiver horizontal position adjusting screw set up the both sides at the second spring, the base groove outside be equipped with the baffle, the baffle on be equipped with the baffle hole.
9. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 8, characterized in that: two adjacent edges of the emitter seat are respectively provided with a pair of spring holes, grooves are arranged between the spring holes and on two sides of the spring holes, fixing rods are arranged in the grooves, the first spring penetrates through each spring hole, and the first spring is arranged on the fixing rods.
10. The pressure-bearing laser hydrogen sulfide on-line monitoring and measuring cell of claim 9, characterized in that: the laser support is arranged at the bottom of the base and is arranged in the upper annular cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122259448.3U CN216082477U (en) | 2021-09-17 | 2021-09-17 | Pressure-bearing type laser hydrogen sulfide on-line monitoring and measuring tank |
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| CN202122259448.3U CN216082477U (en) | 2021-09-17 | 2021-09-17 | Pressure-bearing type laser hydrogen sulfide on-line monitoring and measuring tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115290588A (en) * | 2022-10-09 | 2022-11-04 | 东营钧辰石油设备有限责任公司 | Online toxic gas detector of oil field united station based on laser technology |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115290588A (en) * | 2022-10-09 | 2022-11-04 | 东营钧辰石油设备有限责任公司 | Online toxic gas detector of oil field united station based on laser technology |
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