CN112858585A - Distributed VOCS sampling and measuring device - Google Patents
Distributed VOCS sampling and measuring device Download PDFInfo
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- CN112858585A CN112858585A CN202110036411.6A CN202110036411A CN112858585A CN 112858585 A CN112858585 A CN 112858585A CN 202110036411 A CN202110036411 A CN 202110036411A CN 112858585 A CN112858585 A CN 112858585A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention provides a distributed VOCS sampling and measuring device, which comprises a plurality of first sampling structures arranged on a flue, wherein the first sampling structures are communicated with a collecting pipe, the middle part of the collecting pipe is communicated with a second sampling structure, and the first sampling structures and the second sampling structures are both provided with air outlet connectors; the outer wall of the flue is provided with a plurality of supporting brackets, supporting plates are erected between the supporting brackets, the top surfaces of the supporting brackets are provided with clamping grooves, and the detection structure is driven by a first motor to move along the clamping grooves; the detection structure is provided with a push rod motor and an air inlet joint, and after the detection structure moves in place, the air inlet joint and the air outlet joint are driven by the push rod motor to be in butt joint, so that the flue gas enters the flue gas detector, and the flue gas is detected; a rotating rod, a first fan blade and a second fan blade which are used for stirring the smoke are arranged in the collecting pipe; its novel structure can carry out distributed automatic sampling test to the flue to can close on the sample site and detect, effectively improve and detect the accuracy.
Description
Technical Field
The invention relates to the field of flue gas sampling detection, in particular to a distributed VOCS sampling and measuring device.
Background
In order to facilitate sampling detection of flue gas, a plurality of sampling ports are reserved on most of the existing flues, and the sampling detection modes mainly comprise the following two modes: in one mode, the handheld smoke detector performs smoke sampling detection on each sampling port, so that the operation is troublesome and the working strength is high; and another kind mode is then that each sample position department all communicates and is equipped with the trachea, and the trachea converges to converging pipeline department again, and rethread flue gas check out test set detects the flue gas that converges pipeline department, and although reducible work load of this kind of mode, nevertheless because the pipeline is numerous and communicate each other, long distance's transport flue gas, the flue gas that leads to the sample is diluted by the diffusion, causes the inaccuracy of testing effect.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a distributed VOCS sampling and measuring device which is novel in structure, can perform distributed automatic sampling detection on a flue, can perform detection close to a sampling part, and effectively improves the detection accuracy.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a distributed VOCS sampling and measuring device, which comprises a plurality of first sampling structures which are uniformly arranged at intervals and arranged on a flue, wherein each first sampling structure comprises a first pipeline, one end of each first pipeline is communicated with a sampling port of the flue, the other end of each first pipeline is communicated with a collecting pipe, one end of each first pipeline, which is close to the collecting pipe, is provided with a first electromagnetic valve, the middle part of each first pipeline is provided with a first three-way pipe, the first three-way pipe is communicated with a second pipeline which is arranged upwards, the second pipeline is provided with a second electromagnetic valve, and the top end of the second pipeline is provided with an air outlet joint; the middle part of the collecting pipe is provided with a second sampling structure, the second sampling structure comprises a third pipeline, one end of the third pipeline is communicated with the collecting pipe through a second three-way pipe, the other end of the third pipeline is sealed, the end part, close to the collecting pipe, of the third pipeline is provided with a third electromagnetic valve, the third pipeline is provided with a third three-way pipe, the third three-way pipe is communicated with a fourth pipeline which is arranged upwards, the fourth pipeline is provided with a fourth electromagnetic valve, the top end of the fourth pipeline is provided with the air outlet joint, and the air outlet joints on the first sampling structure and the second sampling structure are at the same height and are positioned on the same straight line; a plurality of supporting brackets are fixedly arranged on the outer wall of the flue, the supporting brackets are arranged corresponding to the first sampling structure and the second sampling structure, and the first pipeline, the third pipeline and the collecting pipe are all arranged on the supporting brackets through pipe bracket supports; a supporting plate is arranged between the tops of the supporting brackets in a fixed mode, the supporting plate extends along the length direction of the flue, a rack is fixedly installed on the bottom surface of the supporting plate, the rack extends along the length direction of the supporting plate, a clamping groove is fixedly installed on the top surface of the supporting plate, and the clamping groove extends along the length direction of the supporting plate; a detection structure is slidably mounted at the supporting plate and comprises a mounting frame and a smoke detector fixed on the mounting frame, a clamping block is fixedly arranged at the bottom of the smoke detector, the clamping block is matched with the clamping groove in shape, and the smoke detector is clamped with the clamping groove through the clamping block and is in sliding fit; the bottom of the mounting frame extends to the lower part of the supporting plate and is provided with a first motor, an output shaft of the first motor is fixedly provided with a gear, the gear is in meshing transmission with the rack, and the first motor drives the whole detection structure to move along the clamping groove; a frame plate is fixedly mounted at the top of the mounting frame and is positioned on one side close to the flue, a push rod motor is fixedly mounted on the frame plate, a piston rod of the push rod motor is arranged downwards, an air inlet joint is fixedly mounted at the end part of the piston rod of the push rod motor, after the detection structure is moved in place, the air inlet joint corresponds to the corresponding air outlet joint in position, and the air inlet joint is communicated with an air inlet of the flue gas detector through an air conveying hose; infrared sensors are correspondingly mounted on the side walls of the second electromagnetic valve and the fourth electromagnetic valve, probes of the infrared sensors are arranged upwards, and blocking pieces used for triggering the infrared sensors are mounted at the bottom of one side, close to the flue, of the mounting frame; the both ends of collecting pipe are sealed, and the dwang is worn to be equipped with inside, the one end salient of dwang is in the tip of collecting pipe, and pass through the gear assembly transmission with the output shaft of second motor and be connected, install a plurality of first flabellums and second flabellum on the dwang, first flabellum reaches the setting of second flabellum mutual interval.
In a preferred technical scheme of the invention, the air outlet joint comprises an installation seat and an exhaust cap, the installation seat comprises a prism block, a supporting block in a circular truncated cone shape is fixedly arranged on the top surface of the prism block, a groove is formed in the downward concave position of the top surface of the supporting block, a first threaded hole is formed in the downward concave position of the groove bottom, a connecting pipe is fixedly arranged on the bottom surface of the prism block, threads are arranged on the outer wall of the connecting pipe and used for being installed and matched with the second pipeline and the fourth pipeline, a through hole is formed in the prism block corresponding to the first threaded hole, and the groove, the first threaded hole, the through hole and the connecting pipe are communicated with each other; the outer wall of the supporting block is sleeved with a soft rubber sleeve; the exhaust cap is of a tubular structure, the top end of the exhaust cap is of a spherical crown structure, the outer wall of the bottom of the exhaust cap is provided with threads and is installed in a matched mode with the first threaded hole, the outer wall of the exhaust cap is provided with a plurality of exhaust holes, the exhaust holes are of a long strip structure and extend in the axial direction of the exhaust cap, and the exhaust holes are distributed in a circumferential array mode around the axis of the exhaust cap; the diameter of the groove is larger than that of the first threaded hole, and the bottom end of the exhaust hole is higher than the bottom of the groove; the air inlet joint comprises a pushing block in a cylindrical shape, the bottom surface of the pushing block is upwards and sequentially provided with a first slotted hole, a second slotted hole, a third slotted hole and a fourth slotted hole in a concave mode, the apertures of the first slotted hole, the second slotted hole and the third slotted hole are sequentially reduced corresponding to the outer wall of the supporting block, multi-stage abutting sealing is formed among the first slotted hole, the second slotted hole, the third slotted hole and the outer wall of the supporting block, and the diameter of the fourth slotted hole is larger than that of the groove; a sealing gasket is fixedly arranged on the bottom surface of the push block at the outer side of the first slotted hole; the middle part of the top surface of the push block is provided with a mounting hole, the mounting hole is provided with a connector in a threaded connection manner, and the connector is connected and communicated with the gas transmission hose; the top of connector is equipped with the support frame, the support frame passes through the fix with screw the top surface of ejector pad, the top of support frame is equipped with the adaptation installation the connecting portion of the piston rod of push rod motor.
In a preferred technical scheme of the invention, the middle part of the top end of the exhaust cap is concavely provided with a hexagonal prism groove.
In a preferred technical scheme of the invention, the outer wall of the rotating rod is provided with two oppositely arranged sliding grooves, the sliding grooves extend to two ends of the rotating rod, the two sliding grooves are communicated with a plurality of limiting grooves along the anticlockwise side of the rotating rod taking the axis as the center, the limiting grooves are distributed in a linear array along the sliding grooves, the limiting grooves are matched with the outer wall of the rotating rod, and one end, away from the sliding grooves, of the groove bottom of each limiting groove is provided with a second threaded hole; the first fan blade comprises a sliding sleeve, two limiting blocks which are arranged in pairs are fixedly arranged on the inner wall of the sliding sleeve, the width of each limiting block is matched with the groove width of the corresponding sliding groove, the length of each limiting block is matched with the groove width of the corresponding limiting groove, the sliding sleeve is fixed at the position of the corresponding limiting groove through screws, and a plurality of fan blades are fixedly arranged on the outer wall of the sliding sleeve and distributed in a circumferential array around the axis of the sliding sleeve; the structure of the second fan blade is the same as that of the first fan blade, and the first fan blade and the second fan blade are arranged in a reverse direction and drive gas to form convection.
In a preferred technical scheme of the invention, the smoke detector comprises two clamping grooves, two clamping blocks are fixedly arranged on the bottom surface of the smoke detector corresponding to the two clamping grooves, a universal ball bearing is arranged in the middle of the bottom surface of the smoke detector, the universal ball bearing is arranged between the two clamping grooves, and a roller ball abuts against the top surface of the supporting plate to move.
In a preferred technical scheme of the invention, a vertical plate is fixedly arranged on the bottom surface of one end, away from the mounting frame, of the frame plate, the vertical plate is positioned on one side, away from the mounting frame, of the air inlet joint, a vertically extending guide strip is fixedly arranged on the wall surface, close to the air inlet joint, of the vertical plate, a guide seat is arranged on the air inlet joint corresponding to the guide strip, and the air inlet joint slides along the guide strip through the guide seat.
The invention has the beneficial effects that:
the distributed VOCS sampling and measuring device provided by the invention is novel in structure, the design of a plurality of first sampling structures can automatically sample smoke at a plurality of parts of a flue, the first sampling structures are communicated with a collecting pipe, so that the sampled smoke at each part can be conveniently mixed, the middle part of the collecting pipe is also communicated with a second sampling structure, and the second sampling structure can sample and detect the mixed smoke; a rotating rod is arranged in the collecting pipe, and a first fan blade and a second fan blade are arranged on the rotating rod to stir and mix the flue gas entering the collecting pipe, so that the detection accuracy of the mixed flue gas is improved; the design of the support bracket, the supporting plate and the rack can be used for installing a detection structure, the detection structure is driven by a first motor to move to the position of a first sampling structure or a second sampling structure, and the smoke output by the sampling position is sent to a smoke detector for smoke detection under the coordination of a push rod motor, an air inlet joint and an air outlet joint; overall structure's design and cooperation realize carrying out the automatic sampling test of distributing type to the flue to close on the sample position and detect, effectively improve and detect the accuracy.
Drawings
Fig. 1 is a schematic structural diagram of a distributed VOCS sampling measurement apparatus provided in an embodiment of the present invention;
FIG. 2 is a side view of a non-pneumatic state of a distributed VOCS sampling and measurement device provided in an embodiment of the present invention;
FIG. 3 is a side view of the air-contacting state of a distributed VOCS sampling and measurement device provided in an embodiment of the present invention;
FIG. 4 is a side view of a second sampling structure provided in an embodiment of the present invention;
FIG. 5 is a schematic view of a mating structure of an outlet connector and an inlet connector according to an embodiment of the present invention;
fig. 6 is a schematic perspective view of an outlet fitting provided in an embodiment of the present invention;
fig. 7 is a schematic view of the internal structure of the air outlet connector provided in the embodiment of the present invention;
FIG. 8 is a perspective view of a mounting base provided in an exemplary embodiment of the present invention;
FIG. 9 is a schematic view of the internal structure of a mounting base provided in an embodiment of the present invention;
FIG. 10 is a schematic perspective view of a vent cap provided in an embodiment of the present invention;
FIG. 11 is a schematic view of the internal structure of an air intake joint provided in an embodiment of the present invention;
fig. 12 is a schematic view of a rotating rod, a first fan blade, and a second fan blade according to an embodiment of the present invention;
FIG. 13 is a cross-sectional view of a rotating shaft and a first fan blade of the present invention;
fig. 14 is a schematic perspective view of a rotating lever provided in an embodiment of the present invention.
In the figure:
100. a flue; 110. a support bracket; 120. a support plate; 130. a rack; 140. a card slot; 210. a first sampling structure; 211. a first conduit; 212. a first solenoid valve; 213. a first three-way pipe; 214. a second conduit; 215. a second solenoid valve; 220. a second sampling structure; 221. a third pipeline; 222. a second three-way pipe; 223. a third electromagnetic valve; 224. a third three-way pipe; 225. a fourth conduit; 226. a fourth solenoid valve; 230. an infrared sensor; 300. a collector pipe; 310. rotating the rod; 311. a chute; 312. a limiting groove; 313. a second threaded hole; 320. a second motor; 330. a first fan blade; 331. a sliding sleeve; 332. a limiting block; 333. a fan blade; 340. a second fan blade; 400. an air outlet joint; 410. a mounting seat; 411. a prism block; 412. a support block; 413. a groove; 414. a first threaded hole; 415. a connecting pipe; 416. a through hole; 417. a soft rubber sleeve; 420. an exhaust cap; 421. an exhaust hole; 422. a hexagonal prism groove; 430. a guide seat; 500. detecting the structure; 510. installing a frame; 511. a baffle plate; 520. a smoke detector; 521. a gas hose; 530. a clamping block; 540. a first motor; 550. a frame plate; 560. a push rod motor; 570. a universal ball bearing; 580. a vertical plate; 590. a guide strip; 600. an air inlet joint; 610. a push block; 621. a first slot; 622. a second slot; 623. a third slot; 624. a fourth slot; 630. a sealing gasket; 640. a connector; 650. a support frame.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 to 4, in an embodiment of the present invention, a distributed VOCS sampling and measuring device is disclosed, including a plurality of first sampling structures 210 installed on a flue 100, the first sampling structures 210 include a first pipeline 211, one end of the first pipeline 211 is communicated with a sampling port of the flue 100, and the other end is communicated with a collecting pipe 300, one end of the first pipeline 211 close to the collecting pipe 300 is installed with a first electromagnetic valve 212, a first three-way pipe 213 is installed in the middle of the first pipeline 211, the first three-way pipe 213 is communicated with an upward second pipeline 214, the second pipeline 214 is installed with a second electromagnetic valve 215, and an air outlet joint 400 is installed at the top end of the second pipeline 214; a second sampling structure 220 is installed in the middle of the collecting pipe 300, the second sampling structure 220 includes a third pipeline 221, one end of the third pipeline 221 is communicated with the collecting pipe 300 through a second three-way pipe 222, the other end of the third pipeline is sealed, a third electromagnetic valve 223 is installed at the end, close to the collecting pipe 300, of the third pipeline 221, a third three-way pipe 224 is installed on the third pipeline 221, a fourth pipeline 225 which is arranged upwards is communicated with the third three-way pipe 224, a fourth electromagnetic valve 226 is installed on the fourth pipeline 225, the top end of the fourth pipeline 225 is provided with the air outlet connector 400, and the air outlet connectors 400 on the first sampling structure 210 and the second sampling structure 220 are located at the same height and on the same straight line; a plurality of support brackets 110 are fixedly mounted on the outer wall of the flue 100, the support brackets 110 are arranged corresponding to the first sampling structure 210 and the second sampling structure 220, and the first pipeline 211, the third pipeline 221 and the collecting pipe 300 are supported and mounted on the support brackets 110 through pipe brackets; a supporting plate 120 is fixedly arranged between the tops of the supporting brackets 110, the supporting plate 120 extends along the length direction of the flue 100, a rack 130 is fixedly mounted on the bottom surface of the supporting plate 120, the rack 130 extends along the length direction of the supporting plate 120, a clamping groove 140 is fixedly mounted on the top surface of the supporting plate 120, and the clamping groove 140 extends along the length direction of the supporting plate 120; the detection structure 500 is slidably mounted at the supporting plate 120, the detection structure 500 includes a mounting frame 510 and a smoke detector 520 fixed on the mounting frame 510, a clamping block 530 is fixedly arranged at the bottom of the smoke detector 520, the clamping block 530 is matched with the clamping groove 140 in shape, and the smoke detector 520 is clamped and slidably matched with the clamping groove 140 through the clamping block 530; the bottom of the mounting frame 510 extends to the lower side of the supporting plate 120 and is provided with a first motor 540, an output shaft of the first motor 540 is fixedly provided with a gear, the gear is in meshing transmission with the rack 130, and the first motor 540 drives the whole detection structure 500 to move along the clamping groove 140; a frame plate 550 is fixedly mounted at the top of the mounting frame 510, the frame plate 550 is located at one side close to the flue 100, a push rod motor 560 is fixedly mounted on the frame plate 550, a piston rod of the push rod motor 560 is arranged downward, an air inlet joint 600 is fixedly mounted at the end of a piston rod of the push rod motor 560, after the detection structure 500 is moved in place, the air inlet joint 600 corresponds to the corresponding air outlet joint 400, and the air inlet joint 600 is communicated with the air inlet of the smoke detector 520 through an air conveying hose 521; the side walls of the second electromagnetic valve 215 and the fourth electromagnetic valve 226 are correspondingly provided with infrared sensors 230, probes of the infrared sensors 230 are arranged upwards, and the bottom of one side of the mounting frame 510 close to the flue 100 is provided with a baffle 511 for triggering the infrared sensors 230; as shown in fig. 12 to 14, two ends of the collecting pipe 300 are sealed, a rotating rod 310 is inserted into the collecting pipe 300, one end of the rotating rod 310 protrudes out of an end of the collecting pipe 300 and is in transmission connection with an output shaft of a second motor 320 through a gear assembly, a plurality of first blades 330 and second blades 340 are installed on the rotating rod 310, and the first blades 330 and the second blades 340 are arranged at intervals; the outer wall of the flue is provided with a sliding contact line for supplying power to each part, a display screen of the smoke detector is arranged towards one side far away from the flue, and the smoke detector is further connected with an external control computer through a wireless signal.
The distributed VOCS sampling and measuring device is novel in structure, the design of the first sampling structures 210 can automatically sample smoke at multiple positions of the flue 100, the first sampling structures 210 are communicated with the collecting pipe 300, the sampling smoke at all the positions can be conveniently mixed, the middle part of the collecting pipe 300 is also communicated with the second sampling structure 220, and the second sampling structure 220 can sample and detect the mixed smoke; a rotating rod 310 is arranged in the collecting pipe 300, and a first fan blade 330 and a second fan blade 340 are arranged on the rotating rod 310, so that the flue gas entering the collecting pipe 300 is stirred and mixed, and the detection accuracy of the mixed flue gas is improved; the design of the support bracket 110, the support plate 120 and the rack 130 can be used for installing the detection structure 500, the detection structure 500 is driven by the first motor 540 to move to the position of the first sampling structure 210 or the second sampling structure 220, and the smoke output by the sampling position is sent to the smoke detector 520 for smoke detection under the cooperation of the push rod motor 560, the air inlet joint 600 and the air outlet joint 400; overall structure's design and cooperation realize carrying out the automatic sampling test of distributing type to the flue to close on the sample position and detect, effectively improve and detect the accuracy.
Further, as shown in fig. 5 to 11, the air outlet connector 400 includes an installation seat 410 and an exhaust cap 420, the installation seat 410 includes a prism block 411, a supporting block 412 in a truncated cone shape is fixedly disposed on a top surface of the prism block 411, a groove 413 is recessed downward from a top surface of the supporting block 412, a first threaded hole 414 is recessed downward from a bottom surface of the groove 413, a connecting pipe 415 is fixedly disposed on a bottom surface of the prism block 411, a thread is disposed on an outer wall of the connecting pipe 415 and used for mounting and matching with the second pipeline 214 and the fourth pipeline 225, a through hole 416 is disposed on the prism block 411 corresponding to the first threaded hole 414, and the groove 413, the first threaded hole 414, the through hole 416 and the connecting pipe 415 are communicated with each other; the outer wall of the supporting block 412 is sleeved with a soft rubber sleeve 417; the exhaust cap 420 is of a tubular structure, the top end of the exhaust cap 420 is of a spherical crown structure, the outer wall of the bottom of the exhaust cap 420 is provided with threads and is installed in a matching manner with the first threaded hole 414, the outer wall of the exhaust cap 420 is provided with a plurality of exhaust holes 421, the exhaust holes 421 are of a long strip structure and extend along the axial direction of the exhaust cap 420, and the exhaust holes 421 are distributed in a circumferential array around the axis of the exhaust cap 420; the diameter of the groove 413 is larger than that of the first threaded hole 414, and the bottom end of the exhaust hole 421 is higher than the bottom of the groove 413; the air inlet joint 600 comprises a cylindrical push block 610, the bottom surface of the push block 610 is provided with a first slot 621, a second slot 622, a third slot 623 and a fourth slot 624 in an upward and sequential concave manner, the aperture of the first slot 621, the aperture of the second slot 622 and the aperture of the third slot 623 are sequentially reduced corresponding to the outer wall of the supporting block 412, a multi-stage abutting seal is formed among the first slot 621, the second slot 622, the aperture of the third slot 623 and the outer wall of the supporting block 412, and the diameter of the fourth slot 624 is larger than that of the groove 413; a sealing washer 630 is fixedly arranged on the bottom surface of the push block 610 outside the first slot 621; the middle of the top surface of the push block 610 is provided with a mounting hole, the mounting hole is provided with a connector 640 in threaded connection, and the connector 640 is communicated with the gas transmission hose 521; a support frame 650 is arranged above the connector 640, the support frame 650 is fixed on the top surface of the push block 610 through screws, and a connecting part adapted to mount a piston rod of the push rod motor 560 is arranged at the top of the support frame 650; the design of the mounting seat 410 facilitates the mounting and matching of the mounting seat 410 with the second pipe 214 and the fourth pipe 225, and facilitates the disassembly and assembly matching of the exhaust cap 420 and the mounting seat 410; the supporting block 412 is in a circular truncated cone-shaped structure, so that the air inlet connector 600 and the supporting block 412 are connected in an aligned mode conveniently, the soft rubber sleeve 417 is pasted and sleeved on the outer wall of the supporting block 412 and matched with the first slotted hole 621, the second slotted hole 622 and the third slotted hole 623 of the air inlet connector 600 to form a multi-stage abutting sealing condition, the sealing gasket 630 can further enhance sealing, and exhaust or leakage of smoke can be effectively prevented.
Furthermore, the middle part of the top end of the exhaust cap 420 is concavely provided with a hexagonal prism groove 422, so that the exhaust cap 420 can be conveniently rotated and disassembled by using tools.
Further, the outer wall of the rotating rod 310 is provided with two oppositely arranged sliding grooves 311, the sliding grooves 311 extend to two ends of the rotating rod 310, a plurality of limiting grooves 312 are communicated with one counterclockwise side of the rotating rod 310, which is centered along the axis of the rotating rod 310, the limiting grooves 312 are distributed along the sliding grooves 311 in a linear array manner, the limiting grooves 312 are adapted to the outer wall of the rotating rod 310, and a second threaded hole 313 is formed in one end, away from the sliding groove 311, of the groove bottom of each limiting groove 312; the first fan blade 330 comprises a sliding sleeve 331, two limiting blocks 332 which are arranged in pairs are fixedly arranged on the inner wall of the sliding sleeve 331, the width of each limiting block 332 is matched with the groove width of the corresponding sliding groove 311, the length of each limiting block 332 is matched with the groove width of the corresponding limiting groove 312, the sliding sleeve 331 is fixed at the corresponding limiting groove 312 through screws, a plurality of fan blades 333 are fixedly arranged on the outer wall of the sliding sleeve 331, and the fan blades 333 are distributed in a circumferential array around the axis of the sliding sleeve 331; the structure of the second fan blade 340 is the same as that of the first fan blade 330, and the first fan blade 330 and the second fan blade 340 are arranged in an opposite direction to drive gas to form convection; the structural design can facilitate the disassembly and assembly of the first fan blade 330 and the second fan blade 340, and prevent the first fan blade 330 and the second fan blade 340 from easily loosening; in addition, the first fan blade 330 and the second fan blade 340 are disposed in opposite directions, so as to sufficiently stir and mix the air pipes entering the collecting pipe 300.
Further, the two clamping grooves 140 are included, two clamping blocks 530 are fixedly mounted on the bottom surface of the smoke detector 520 corresponding to the two clamping grooves 140, a universal ball bearing 570 is mounted in the middle of the bottom surface of the smoke detector 520, the universal ball bearing 570 is arranged between the two clamping grooves 140, and the roller ball abuts against the top surface of the supporting plate 120 to move; the design of two draw-in grooves can carry out stable support direction to detecting structure 500, and universal ball bearing 570's design then can conveniently detect structure 500's removal.
Further, a vertical plate 580 is fixedly arranged on the bottom surface of one end, away from the mounting frame 510, of the frame plate 550, the vertical plate 580 is located on one side, away from the mounting frame 510, of the air inlet joint 600, a vertically extending guide strip 590 is fixedly arranged on the wall surface, close to the air inlet joint 600, of the vertical plate 580, a guide seat 430 is installed on the air inlet joint 400 corresponding to the guide strip 590, the air inlet joint 400 slides along the guide strip 590 through the guide seat 430, movement of the air inlet joint 600 is further limited, and alignment with the air outlet joint 400 is facilitated.
When the sampling detection of the single part is carried out, the invention mainly comprises the following steps:
s1, determining the corresponding sampling position by controlling the computer to issue the corresponding detection requirement;
s2, starting the first motor to drive the detection structure to move to the corresponding sampling part;
s3, starting a push rod motor, pushing an air inlet joint to move downwards to a preset position, and realizing butt joint of an air outlet joint and the air inlet joint;
s4, the second electromagnetic valve of the corresponding first sampling structure is opened, the smoke at the corresponding part in the flue enters a smoke detector, and the smoke detector detects the smoke, displays data on a display screen and synchronously transmits the data to a control computer;
and S5, after the detection is finished, the second electromagnetic valve is closed, the push rod motor drives the air inlet connector to reset, the matching of the air inlet connector and the air outlet connector is removed, and preparation is made for the sampling detection of the next part.
When the invention is used for sampling and detecting the whole smoke, the invention mainly comprises the following steps:
b1, opening the first electromagnetic valves on the first sampling structures to enable the smoke of all parts to enter the confluence pipe;
b2, starting a second motor to drive the rotating rod to rotate, and stirring and mixing the smoke by the first fan blade and the second fan blade;
b3, starting the first motor to drive the detection structure to move to the second sampling structure;
b4, starting a push rod motor, pushing an air inlet joint to move downwards to a preset position, and realizing the butt joint of an air outlet joint and the air inlet joint;
b5, opening a third electromagnetic valve and a fourth electromagnetic valve, enabling the mixed flue gas in the collecting pipe to enter a flue gas detector, detecting the flue gas by the flue gas detector, displaying data on a display screen, and synchronously transmitting the data to a control computer;
and B6, after the detection is finished, the third electromagnetic valve and the fourth electromagnetic valve are closed, the push rod motor drives the air inlet connector to reset, the matching of the air inlet connector and the air outlet connector is removed, and preparation is made for the next sampling detection.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (6)
1. A distributed VOCS sampling and measuring device is characterized in that:
the sampling device comprises a plurality of first sampling structures (210) which are uniformly arranged on a flue (100) at intervals, wherein each first sampling structure (210) comprises a first pipeline (211), one end of each first pipeline (211) is communicated with a sampling port of the flue (100), the other end of each first pipeline is communicated with a collecting pipe (300), one end, close to the collecting pipe (300), of each first pipeline (211) is provided with a first electromagnetic valve (212), the middle part of each first pipeline (211) is provided with a first three-way pipe (213), each first three-way pipe (213) is provided with a second pipeline (214) which is arranged upwards in a communicated mode, each second pipeline (214) is provided with a second electromagnetic valve (215), and the top end of each second pipeline (214) is provided with an air outlet joint (400); a second sampling structure (220) is arranged in the middle of the collecting pipe (300), the second sampling structure (220) comprises a third pipeline (221), one end of the third pipeline (221) is communicated with the collecting pipe (300) through a second three-way pipe (222), and the other end is sealed, a third electromagnetic valve (223) is arranged at the end part of the third pipeline (221) close to the collecting pipe (300), a third three-way pipe (224) is arranged on the third pipeline (221), a fourth pipeline (225) which is arranged upwards is communicated on the third three-way pipe (224), a fourth electromagnetic valve (226) is arranged on the fourth pipeline (225), the top end of the fourth pipeline (225) is provided with the air outlet joint (400), the air outlet connectors (400) on the first sampling structure (210) and the second sampling structure (220) are positioned at the same height and on the same straight line;
a plurality of supporting brackets (110) are fixedly mounted on the outer wall of the flue (100), the supporting brackets (110) are arranged corresponding to the first sampling structure (210) and the second sampling structure (220), and the first pipeline (211), the third pipeline (221) and the collecting pipe (300) are supported and mounted on the supporting brackets (110) through pipe brackets; a supporting plate (120) is fixedly arranged between the tops of the supporting brackets (110), the supporting plate (120) extends along the length direction of the flue (100), a rack (130) is fixedly installed on the bottom surface of the supporting plate (120), the rack (130) extends along the length direction of the supporting plate (120), a clamping groove (140) is fixedly installed on the top surface of the supporting plate (120), and the clamping groove (140) extends along the length direction of the supporting plate (120);
a detection structure (500) is slidably mounted at the supporting plate (120), the detection structure (500) comprises a mounting frame (510) and a smoke detector (520) fixed on the mounting frame (510), a clamping block (530) is fixedly arranged at the bottom of the smoke detector (520), the clamping block (530) is matched with the clamping groove (140) in shape, and the smoke detector (520) is clamped with the clamping groove (140) through the clamping block (530) in sliding fit; the bottom of the mounting frame (510) extends to the lower part of the supporting plate (120) and is provided with a first motor (540), an output shaft of the first motor (540) is fixedly provided with a gear, the gear is in meshing transmission with the rack (130), and the first motor (540) drives the whole detection structure (500) to move along the clamping groove (140); a frame plate (550) is fixedly mounted at the top of the mounting frame (510), the frame plate (550) is located on one side close to the flue (100), a push rod motor (560) is fixedly mounted on the frame plate (550), a piston rod of the push rod motor (560) is arranged downwards, an air inlet joint (600) is fixedly mounted at the end part of the piston rod of the push rod motor (560), after the detection structure (500) moves in place, the air inlet joint (600) corresponds to the corresponding air outlet joint (400), and the air inlet joint (600) is communicated with an air inlet of the smoke detector (520) through an air conveying hose (521); infrared sensors (230) are correspondingly mounted on the side walls of the second electromagnetic valve (215) and the fourth electromagnetic valve (226), probes of the infrared sensors (230) are arranged upwards, and a blocking piece (511) used for triggering the infrared sensors (230) is mounted at the bottom of one side, close to the flue (100), of the mounting frame (510);
the both ends of collecting pipe (300) are sealed, and inside dwang (310) of wearing to be equipped with, the one end salient of dwang (310) is in the tip of collecting pipe (300), and pass through the gear assembly transmission with the output shaft of second motor (320) and be connected, install a plurality of first flabellums (330) and second flabellum (340) on dwang (310), first flabellum (330) reach second flabellum (340) are the interval setting each other.
2. A distributed VOCS sampling measurement device according to claim 1, wherein:
the air outlet connector (400) comprises an installation seat (410) and an exhaust cap (420), the installation seat (410) comprises a prism block (411), a circular truncated cone-shaped supporting block (412) is fixedly arranged on the top surface of the prism block (411), a groove (413) is formed in the top surface of the supporting block (412) in a downward sunken mode, a first threaded hole (414) is formed in the bottom of the groove (413) in a downward sunken mode, a connecting pipe (415) is fixedly arranged on the bottom surface of the prism block (411), threads are arranged on the outer wall of the connecting pipe (415) and used for being installed and matched with the second pipeline (214) and the fourth pipeline (225), a through hole (416) is formed in the prism block (411) corresponding to the first threaded hole (414), and the groove (413), the first threaded hole (414), the through hole (416) and the connecting pipe (415) are communicated with the inside; the outer wall of the supporting block (412) is sleeved with a soft rubber sleeve (417);
the exhaust cap (420) is of a tubular structure, the top end of the exhaust cap is of a spherical crown structure, the outer wall of the bottom of the exhaust cap (420) is provided with threads and is installed in a matched mode with the first threaded hole (414), the outer wall of the exhaust cap (420) is provided with a plurality of exhaust holes (421), the exhaust holes (421) are of a long strip-shaped structure and extend along the axial direction of the exhaust cap (420), and the exhaust holes (421) are distributed in a circumferential array mode around the axis of the exhaust cap (420); the diameter of the groove (413) is larger than that of the first threaded hole (414), and the bottom end of the exhaust hole (421) is higher than the bottom of the groove (413);
the air inlet joint (600) comprises a cylindrical push block (610), the bottom surface of the push block (610) is upwards provided with a first slotted hole (621), a second slotted hole (622), a third slotted hole (623) and a fourth slotted hole (624) in a recessed mode in sequence, the aperture of the first slotted hole (621), the aperture of the second slotted hole (622) and the aperture of the third slotted hole (623) are sequentially reduced corresponding to the outer wall of the supporting block (412), a multi-stage abutting seal is formed among the first slotted hole (621), the second slotted hole (622), the third slotted hole (623) and the outer wall of the supporting block (412), and the diameter of the fourth slotted hole (624) is larger than that of the groove (413); a sealing gasket (630) is fixedly arranged on the bottom surface of the push block (610) at the outer side of the first slotted hole (621); the middle of the top surface of the push block (610) is provided with a mounting hole, the mounting hole is provided with a connector (640) in a threaded connection manner, and the connector (640) is communicated with the air hose (521); the top of connector (640) is equipped with support frame (650), support frame (650) pass through the fix with screw the top surface of ejector pad (610), the top of support frame (650) is equipped with the adaptation installation the connecting portion of the piston rod of push rod motor (560).
3. A distributed VOCS sampling measurement device according to claim 2, wherein:
the middle part of the top end of the exhaust cap (420) is concavely provided with a hexagonal prism groove (422).
4. A distributed VOCS sampling measurement device according to claim 1, wherein:
the outer wall of the rotating rod (310) is provided with two oppositely arranged sliding grooves (311), the sliding grooves (311) extend to the two ends of the rotating rod (310), the two sliding grooves (311) are communicated with one counterclockwise side which is centered along the axis of the rotating rod (310) and provided with a plurality of limiting grooves (312), the limiting grooves (312) are distributed along the sliding grooves (311) in a linear array manner, the limiting grooves (312) are matched with the outer wall of the rotating rod (310), and one end, away from the sliding grooves (311), of the groove bottom of each limiting groove (312) is provided with a second threaded hole (313);
the first fan blade (330) comprises a sliding sleeve (331), two limiting blocks (332) which are arranged in pairs are fixedly arranged on the inner wall of the sliding sleeve (331), the width of each limiting block (332) is matched with the groove width of the corresponding sliding groove (311), the length of each limiting block (332) is matched with the groove width of the corresponding limiting groove (312), the sliding sleeve (331) is fixed at the position of the corresponding limiting groove (312) through a screw, a plurality of fan blades (333) are fixedly arranged on the outer wall of the sliding sleeve (331), and the fan blades (333) are distributed in a circumferential array around the axis of the sliding sleeve (331); the structure of the second fan blade (340) is the same as that of the first fan blade (330), and the first fan blade (330) and the second fan blade (340) are arranged in a reverse direction and drive gas to form convection.
5. A distributed VOCS sampling measurement device according to claim 1, wherein:
the two-piece clamping device is characterized by comprising two clamping grooves (140), the bottom surface of the smoke detector (520) corresponds to two clamping grooves (140), two clamping blocks (530) are fixedly mounted on the clamping grooves (140), universal ball bearings (570) are mounted in the middle of the bottom surface of the smoke detector (520), two universal ball bearings (570) are arranged between the clamping grooves (140), and the roller balls are abutted to the top surface of the supporting plate (120) to move.
6. A distributed VOCS sampling measurement device according to claim 1, wherein:
the mounting frame is characterized in that a vertical plate (580) is fixedly arranged on the bottom surface of one end, far away from the mounting frame (510), of the frame plate (550), the vertical plate (580) is located on one side, far away from the mounting frame (510), of the air inlet joint (600), a vertically extending guide strip (590) is fixedly arranged on the wall surface, close to the air inlet joint (600), of the vertical plate (580), a guide seat (430) is installed on the air inlet joint (400) corresponding to the guide strip (590), and the air inlet joint (400) slides along the guide strip (590) through the guide seat (430).
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| CN202110036411.6A CN112858585B (en) | 2021-01-12 | 2021-01-12 | Distributed VOCS sampling and measuring device |
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Cited By (1)
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| CN114034484A (en) * | 2021-11-11 | 2022-02-11 | 北京君岳伟信工程技术有限公司 | Rotating equipment state monitoring and analyzing device |
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