CN114814077B - Bundled wire and cable combustion testing machine and control method thereof - Google Patents
Bundled wire and cable combustion testing machine and control method thereof Download PDFInfo
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- CN114814077B CN114814077B CN202210495735.0A CN202210495735A CN114814077B CN 114814077 B CN114814077 B CN 114814077B CN 202210495735 A CN202210495735 A CN 202210495735A CN 114814077 B CN114814077 B CN 114814077B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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- B01D53/30—Controlling by gas-analysis apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
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Abstract
The invention provides a bundled wire and cable combustion testing machine and a control method thereof, wherein the bundled wire and cable combustion testing machine comprises a combustion tank, an alkaline washing tower and a flue gas analyzer, wherein the alkaline washing tower and the flue gas analyzer are connected with the gas transmission end of the combustion tank; the inside of burning jar is equipped with flue gas conveying mechanism from top to bottom in proper order, slewing mechanism, burning mechanism and processing mechanism, slewing mechanism is including locating the burning mechanism top, and install in the supporting disk of burning jar inner wall surface to and rotate with the supporting disk and be connected, and the rotation locking ring that the power supply line cable alternates, the drive end of rotating the locking ring is connected with first power component, the inside of rotating the locking ring is equipped with the spring telescopic link, the one end of spring telescopic link is connected with compresses tightly the tooth. The invention can effectively treat waste gas and waste residue generated by burning the electric wire and the cable in the combustion tank.
Description
Technical Field
The invention relates to the technical field of wires and cables, in particular to a bundled wire and cable combustion testing machine and a control method thereof.
Background
According to the fire statistics published by the fire department in recent years, the number of electrical fires accounts for about 30% of the total number of fires. In recent years, in a serious fire, particularly a serious fire, and in a distribution of direct causes of an electrical fire, an electrical line fault accounts for a large part of the electrical fire, and a wire cable is one of important components in an electrical line. The cable itself can be a medium for fire propagation during the combustion process, and thus the cable is naturally very important for electrical fires.
According to a tunnel cable burning test system provided in patent document CN202120838991.6, the tunnel cable burning test system includes a base, on which an auxiliary device for fixing a cable, a test device for igniting and extinguishing the cable, and a test device for monitoring the burning of the cable are disposed. The test device can research the cable combustion state and the flue gas detection and fire extinguishing characteristics through simulating the tunnel cable combustion test so as to improve the cable design characteristics, ensure the safe use of the cable and improve the fireproof performance of the cable.
According to patent document CN202110065898.0, a bundled wire and cable burning tester, a control flow and a control method thereof are provided, wherein the cable burning tester comprises a video monitor, an upper computer connected with the video monitor, and a PLC controller connected with the upper computer. The invention also discloses a control flow of the bundled wire and cable combustion testing machine, which comprises a self-checking link, a system setting link, a test setting link and a system judging link; the invention also discloses a control method of the bundled wire and cable combustion testing machine, which comprises equipment debugging, system setting, test setting and starting testing. The invention utilizes the embedded all-in-one machine, controls data acquisition and processing through the PLC, edits the whole test flow through application software, realizes that data parameters can be set, modified and calibrated, increases video monitoring links, can monitor, inquire and review the test process, improves the automation degree of the whole system, simplifies the test flow, and is closer to the execution standard in terms of data precision.
However, the cable burning test machine is difficult to fully treat the smoke and the scraps generated during and after cable burning, so that the smoke and the scraps are easy to remain in the test machine, and therefore, when the cable is burned next time, the remaining scraps are easy to be ignited by the scraps generated during the cable burning, and the remaining smoke is easy to be mixed with the smoke generated during the cable burning, thereby affecting the test precision.
Disclosure of Invention
In view of the above, the present invention is directed to a bundled wire and cable burn test machine and a control method thereof for solving the above-mentioned problems of the background art.
The invention provides a bundled wire and cable combustion testing machine which comprises a combustion tank, an alkaline washing tower and a flue gas analyzer, wherein the alkaline washing tower and the flue gas analyzer are connected with the gas transmission end of the combustion tank;
the combustion tank is characterized in that a flue gas conveying mechanism, a rotating mechanism, a combustion mechanism and a processing mechanism are sequentially arranged in the combustion tank from top to bottom, the rotating mechanism comprises a supporting plate arranged at the top end of the combustion mechanism and mounted on the surface of the inner wall of the combustion tank, and a rotating locking ring which is rotatably connected with the supporting plate and is penetrated by a power supply cable, the driving end of the rotating locking ring is connected with a first power assembly, a spring telescopic rod is arranged in the rotating locking ring, and one end of the spring telescopic rod is connected with a pressing tooth;
the smoke conveying mechanism comprises a sliding cylinder, a lifting disc and a reciprocating pushing assembly, wherein the sliding cylinder is installed at the top end inside the combustion tank, a power supply line cable penetrates through the sliding cylinder, the lifting disc is sleeved outside the sliding cylinder, the reciprocating pushing assembly is arranged at the bottom end of the lifting disc, a first air vent is formed in a shell of the lifting disc, and an air blocking cover is installed on the upper surface of the lifting disc;
the processing mechanism alternates in the sediment fill of holding of combustion tank bottom end, install in hold the filter screen section of thick bamboo of sediment fill upper surface, and install in hold the pipe of slagging tap of sediment fill lower surface, the top of the pipe of slagging tap is equipped with the stairstepping spacing groove, the pipe of slagging tap extends to outside one end and is connected with second power component.
Further, the burning mechanism including install in the inside gas pipe of burning jar to and locate in proper order from top to bottom some firearm on the gas pipe casing, the one end that the gas pipe extended to outside is connected with flowmeter and solenoid valve, some firearm is connected with the relay, flowmeter, solenoid valve, relay all with PLC controller electric connection. In the invention, the gas is conveyed through the gas pipe connected with the gas source, so that after the gas is ignited by the igniter, flame is sprayed out through the flame spraying port on the gas pipe, and the sprayed flame is used for carrying out fire baking test on the electric wire and the electric cable so as to detect the flame retardant property of the electric wire and the electric cable.
Furthermore, the reciprocating pushing assembly comprises a first oblique angle pushing cylinder arranged on the upper surface of the rotating locking ring and a second oblique angle pushing cylinder which is abutted against the upper surface of the first oblique angle pushing cylinder and is inserted into the lifting disc in a penetrating manner. In the invention, the lifting disc sleeved on the second bevel push cylinder is driven to lift by the lifting of the second bevel push cylinder, so that hot air generated by the combustion of wires and cables in the bottom end space of the lifting disc is transmitted into the top end space of the lifting disc through the lifting disc, and the hot air in the space is compressed, so that the hot air in the space enters the heat-insulating jacket.
Furthermore, the reciprocating pushing assembly further comprises a plurality of first balls embedded in the lower surface of the second oblique angle pushing cylinder and a plurality of second balls embedded in the inner surface of the second oblique angle pushing cylinder, the second oblique angle pushing cylinder is in sliding connection with the upper surface of the first oblique angle pushing cylinder through the first balls, the second oblique angle pushing cylinder is in sliding connection with the guide groove through the second balls, and the guide groove is formed in the outer surface of the sliding cylinder. In the invention, dry friction between the second bevel angle push cylinder and the first bevel angle push cylinder is reduced by rolling the first ball on the upper surface of the first bevel angle push cylinder, so that the service life of the second bevel angle push cylinder and the first bevel angle push cylinder is prolonged, and dry friction between the second bevel angle push cylinder and the sliding cylinder is prevented by rolling the second ball on the sliding cylinder, so that the service life of the second bevel angle push cylinder and the sliding cylinder is prolonged.
Furthermore, a heat-insulating jacket is sleeved on the outer surface of the combustion tank, a plurality of first vent holes are formed in the top end of the combustion tank, and a rubber air blocking ring arranged inside the heat-insulating jacket is installed on the outer surface of the combustion tank. In the invention, when hot air pushes the rubber air blocking ring open and enters the inside of the heat-insulating jacket, the heat-insulating jacket blocks the rubber air blocking ring from moving, and the rubber air blocking ring blocks the hot air from flowing back.
Furthermore, a first gas pipe is arranged at the top end of the heat-insulation jacket in a penetrating mode, one end, far away from the heat-insulation jacket, of the first gas pipe is connected with a three-way pipe, the gas outlet end of the three-way pipe is connected with second gas pipes, and the gas outlet ends of the two second gas pipes are respectively connected with the inlet ends of the alkaline tower and the inlet end of the flue gas analyzer. In the invention, the waste gas can enter the alkaline tower and the flue gas analyzer to be cleaned by the alkaline tower, so that the pollution caused by the waste gas is reduced, and the waste gas is analyzed by the flue gas analyzer.
Furthermore, air valves are arranged on the shells of the two second air conveying pipes. In the invention, whether the waste gas passes through the second gas transmission pipe or not is controlled by the gas valve, so that a tester can control whether the smoke needs to be cleaned and analyzed or not.
Furthermore, the first power assembly comprises a first motor arranged on the outer surface of the heat-insulation jacket, a rotating shaft connected with one end of the first motor extending to the combustion tank, and a first bevel gear arranged on the outer surface of one end of the rotating shaft far away from the output shaft of the first motor, wherein one side of the first bevel gear is in meshing connection with a second bevel gear, and the second bevel gear is sleeved on the outer surface of the second bevel push cylinder. In the invention, a first motor drives a rotating shaft on an output shaft of the first motor to rotate, the rotating shaft drives a first bevel gear to rotate, the first bevel gear drives a second bevel gear meshed with the first bevel gear to rotate, and a second bevel push cylinder inserted on the second bevel gear is driven by a second bevel gear sleeve to rotate.
Furthermore, the second power component including install in the support of burning tank bottom, the internally mounted of support has the backup pad, the lower surface mounting of backup pad has the second motor, the output shaft surface of second motor is connected with first gear, one side meshing of first gear is connected with the second gear, the second gear install in the pipe of slagging tap extends to outside one end surface. In the invention, the second motor drives the first gear to rotate through the output shaft of the second motor, drives the second gear meshed with the second motor to rotate through the first gear, and drives the slag discharging pipe to rotate through the second gear.
According to the technical scheme of the bundled wire and cable combustion testing machine, the control method of the bundled wire and cable combustion testing machine is further provided, and comprises the following steps:
step one, starting an igniter, a relay, an electromagnetic valve and an air valve through a PLC (programmable logic controller), and determining that the igniter, the flowmeter, the relay, the electromagnetic valve and the air valve can be controlled;
monitoring the gas flow passing through the gas pipe by opening the flowmeter, and enabling waste gas in the combustion tank to enter a flue gas analyzer by opening the gas valve so as to detect the components of the waste gas generated during the combustion of the electric wire and the cable;
step three, setting the gas flow passing through the gas pipe, controlling the gas flow passing through the gas pipe through the electromagnetic valve, setting the ignition time of the igniter, and observing the test process by a tester.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the invention can effectively treat the waste gas generated by burning wires and cables in the combustion tank, and specifically comprises the following steps: the lifting disc sleeved with the lifting driving sleeve through the second oblique angle pushing cylinder is lifted, hot air generated in the bottom space of the lifting disc due to the combustion of electric wires and cables is transmitted to the top space of the lifting disc through the lifting disc, the hot air in the space is compressed, the hot air in the space enters the heat insulation jacket to be insulated, the hot air in the heat insulation jacket is pushed by the hot air subsequently entering the heat insulation jacket, the hot air is discharged through the first air pipe, the waste air passing through the first air pipe is divided through the three-way pipe and is discharged from the two second air pipes respectively, the two second air pipes are communicated with the alkaline tower and the smoke analyzer respectively, the waste air can enter the alkaline tower and the smoke analyzer, the waste air is cleaned through the alkaline tower, pollution caused by the waste air is reduced, and the waste air is analyzed through the smoke analyzer.
Secondly, the invention can effectively treat the waste residue generated by burning the electric wire and the cable in the combustion tank, and specifically comprises the following steps: drive through the pipe of slagging tap and hold the sediment fill and rotate, it is rotatory to drive a filter screen section of thick bamboo through holding the sediment fill to cooperation wire and cable's rotation, and after wire and cable burning, set up the spray pipe at both ends about the gas pipe through the burning jar, carry out glue to wire and cable, and wash the produced waste residue after the wire and cable burning, through the rotation of a filter screen section of thick bamboo, throw away the waste water in the filter screen section of thick bamboo, and after taking out wire and cable, the waste residue is discharged with the help of the pipe of slagging tap.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention as set forth hereinafter.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of the structure at A in FIG. 3;
FIG. 5 is an enlarged view of the structure at B in FIG. 3;
FIG. 6 is a schematic structural view of a support tray according to the present invention;
FIG. 7 is a front view of the present invention;
FIG. 8 is a schematic view of the reciprocating push assembly of the present invention;
FIG. 9 is an exploded view of the burn pot of the present invention;
FIG. 10 is a flow chart of the present invention.
In the figure: 10. a combustion can; 11. a flue gas conveying mechanism; 111. a sliding cylinder; 112. a lifting plate; 113. a reciprocating pushing assembly; 1131. a first bevel push cylinder; 1132. a second bevel push cylinder; 1133. a first ball bearing; 1134. a second ball bearing; 1135. a guide groove; 12. a rotating mechanism; 121. a support disc; 122. rotating the locking ring; 1221. a spring telescopic rod; 1222. a pressing tooth; 123. a first power assembly; 1231. a first motor; 1232. a rotating shaft; 1233. a first bevel gear; 1234. a second bevel gear; 13. a combustion mechanism; 131. a gas pipe; 132. an igniter; 133. a flow meter; 134. an electromagnetic valve; 135. a relay; 136. a PLC controller; 14. a processing mechanism; 141. a slag bearing hopper; 142. a filter screen cylinder; 143. a slag pipe; 144. a second power assembly; 1441. a support; 1442. a support plate; 1443. a second motor; 1444. a first gear; 1445. a second gear; 145. a stepped limiting groove; 15. a three-way pipe; 16. a second gas delivery pipe; 17. an air valve; 18. a heat-preserving jacket; 20. an alkaline washing tower; 30. flue gas analyzer.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 10, in a preferred embodiment of the present invention, a bundled wire cable burning test machine comprises a burning tank 10, a caustic tower 20 connected to a gas transmission end of the burning tank 10, and a flue gas analyzer 30.
The combustion tank 10 is provided with a flue gas conveying mechanism 11, a rotating mechanism 12, a combustion mechanism 13 and a processing mechanism 14 from top to bottom in sequence. Wherein, slewing mechanism 12 is including locating combustion mechanism 13 top and installing in the supporting disk 121 of burning jar 10 inner wall surface to and rotate lock ring 122 with supporting disk 121 rotation connection and power supply cable interlude. The driving end of the rotating locking ring 122 is connected with a first power assembly 123, a spring expansion rod 1221 is arranged inside the rotating locking ring 122, and one end of the spring expansion rod 1221 is connected with a pressing tooth 1222.
The smoke conveying mechanism 11 includes a sliding tube 111 installed at the top end inside the combustion can 10 and through which the power supply cable is inserted, a lifting disc 112 sleeved outside the sliding tube 111, and a reciprocating pushing assembly 113 disposed at the bottom end of the lifting disc 112. A first vent hole 1121 is formed in the housing of the elevating tray 112, and an air blocking cover 1122 is attached to the upper surface of the elevating tray 112.
The processing mechanism 14 comprises a slag receiving hopper 141 inserted at the bottom end of the combustion tank 10, a filter screen drum 142 mounted on the upper surface of the slag receiving hopper 141, and a slag discharging pipe 143 mounted on the lower surface of the slag receiving hopper 141. The top end of the slag discharging pipe 143 is provided with a stepped limiting groove 145, and one end of the slag discharging pipe 143 extending to the outside is connected with the second power assembly 144.
It should be noted that, in this embodiment, the electric wire and cable are inserted into the combustion canister 10, and then sequentially pass through the sliding cylinder 111 and the locking ring 122, until the bottom end of the electric wire and cable contacts the stepped limiting groove 145 in the filter screen cylinder 142 and is clamped into the stepped limiting groove 145. The gas is delivered through the gas pipe 131 connected to the gas source to be ignited by the igniter 132, and then flame is jetted through the flame jetting port on the gas pipe 131, so that the wire and cable are subjected to a fire test by using the jetted flame, and the flame retardancy of the wire and cable is detected.
In the process of detecting the flame retardant property of the electric wire and cable, the first motor 1231 drives the rotating shaft 1232 on the output shaft to rotate, the rotating shaft 1232 drives the first bevel gear 1233 to rotate, the first bevel gear 1233 drives the second bevel gear 1234 engaged with the first bevel gear to rotate, the second bevel gear 1234 sleeve drives the second bevel pushing cylinder 1132 inserted on the second bevel pushing cylinder to rotate, the second bevel gear 1234 drives the rotating locking ring 122 to rotate, and the rotating locking ring 122 drives the electric wire and cable to rotate, so that the electric wire and cable fully contact with the flame sprayed out from the gas pipe 131.
The second motor 1443 drives the first gear 1444 to rotate through the output shaft of the second motor, the second gear 1445 meshed with the second motor is driven to rotate through the first gear 1444, the slag discharging pipe 143 is driven to rotate through the second gear 1445, the slag bearing hopper 141 is driven to rotate through the slag discharging pipe 143, and the filter screen drum 142 is driven to rotate through the slag bearing hopper 141 so as to be matched with the rotation of the electric wire and the electric cable. And after the electric wire and cable are burnt, the water spraying pipes arranged at the upper end and the lower end of the gas pipe 131 through the burning tank 10 are used for carrying out glue on the electric wire and cable, and the generated waste residues after the electric wire and cable are burnt are washed. By the rotation of the filter screen drum 142, the waste water in the filter screen drum 142 is discharged, and after the electric wire and cable are taken out, the waste residue is discharged by means of the slag discharging pipe 143.
Specifically, referring to fig. 6 and 10 again, in another preferred embodiment of the present invention, the combustion mechanism 13 includes a gas pipe 131 installed inside the combustion canister 10, and an igniter 132 sequentially installed on a housing of the gas pipe 131 from top to bottom, and a flow meter 133 and a solenoid valve 134 are connected to an end of the gas pipe 131 extending to the outside. The igniter 132 is connected to the relay 135, and the flowmeter 133, the solenoid valve 134, and the relay 135 are all electrically connected to the PLC controller 136.
In this embodiment, the gas is supplied through the gas pipe 131 connected to the gas source to be ignited by the igniter 132, and then a flame is jetted through the flame jetting port of the gas pipe 131, so that the electric wire and the cable are subjected to a fire test by the jetted flame to detect the flame retardant performance of the electric wire and the cable.
The flow rate of the gas flowing through the gas pipe 131 is monitored by a flow meter 133, whether the gas passes through the gas pipe 131 is controlled by a solenoid valve 134, and whether the gas passing through the gas pipe 131 is ignited is controlled by a relay 135; the PLC 136 receives the electric signal with flow information transmitted by the flow meter 133 which is electrically connected with the PLC 136, and the PLC 136 commands the electromagnetic valve 134 and the relay 135 which are electrically connected with the PLC, so that a tester can control the wire and cable combustion tester according to the requirement.
Specifically, referring to fig. 3 and 8 again, in another preferred embodiment of the present invention, the reciprocating pushing assembly 113 includes a first bevel pushing cylinder 1131 installed on the upper surface of the rotating lock ring 122, and a second bevel pushing cylinder 1132 abutting against the upper surface of the first bevel pushing cylinder 1131 and inserted into the lifting tray 112.
The reciprocating pushing assembly 113 further comprises a plurality of first balls 1133 embedded in a lower surface of the second bevel pushing cylinder 1132, and a plurality of second balls 1134 embedded in an inner surface of the second bevel pushing cylinder 1132, wherein the second bevel pushing cylinder 1132 is slidably connected with an upper surface of the first bevel pushing cylinder 1131 through the first balls 1133. The second bevel plunger 1132 is slidably connected to the guide groove 1135 by a second ball 1134, and the guide groove 1135 is disposed on the outer surface of the sliding barrel 111.
It should be noted that, in this embodiment, through the rotation of the first bevel pushing cylinder 1131, the bottom end inclined surface of the second bevel pushing cylinder 1132 slides on the top end inclined surface of the first bevel pushing cylinder 1131 by the rotation of the first bevel pushing cylinder 1131, so that the first bevel pushing cylinder 1131 pushes the second bevel pushing cylinder 1132 to ascend and descend, so as to drive the lifting tray 112 sleeved thereon to ascend and descend through the ascending and descending of the second bevel pushing cylinder 1132, so that the hot air generated by the combustion of the electric wires and cables in the bottom end space of the lifting tray 112 is transmitted to the top end space of the lifting tray 112 through the lifting tray 112, and the hot air in the space is compressed, so that the hot air in the space enters the inside of the heat insulating jacket 18.
Further, second bevel pusher 1132 is connected with the upper surface of first bevel pusher 1131 through first ball 1133 in a sliding manner, so that by rolling of first ball 1133 on the upper surface of first bevel pusher 1131, dry friction between second bevel pusher 1132 and first bevel pusher 1131 is reduced, and thus the service life of second bevel pusher 1132 and first bevel pusher 1131 is prolonged.
Second bevel pushing cylinder 1132 is connected with guide groove 1135 on sliding cylinder 111 through second ball 1134 in a sliding manner, so that dry friction generated between second bevel pushing cylinder 1132 and sliding cylinder 111 is prevented through rolling of second ball 1134 on sliding cylinder 111, and service life of second bevel pushing cylinder 1132 and sliding cylinder 111 is prolonged.
Specifically, please refer to fig. 3, fig. 7 and fig. 9, in another preferred embodiment of the present invention, a heat insulation jacket 18 is sleeved on an outer surface of the combustion can 10, a plurality of first vent holes 1121 are disposed at a top end of the combustion can 10, and a rubber gas blocking ring 13a disposed inside the heat insulation jacket 18 is mounted on the outer surface of the combustion can 10.
A first air pipe 14a is arranged at the top end of the heat-insulating jacket 18 in a penetrating manner, one end, far away from the heat-insulating jacket 18, of the first air pipe 14a is connected with a three-way pipe 15, the air outlet end of the three-way pipe 15 is connected with a second air pipe 16, and the air outlet ends of the two second air pipes 16 are respectively connected with the air inlet ends of the alkaline tower 20 and the flue gas analyzer 30. And air valves 17 are arranged on the shells of the two second air conveying pipes 16.
It should be noted that, in the present embodiment, through the descending of the lifting tray 112, the air at the bottom end of the lifting tray 112 passes through the first vent hole 1121 through the compression of the lifting tray 112 and pushes away the air blocking cover 1122, so that the hot air enters the space at the top end of the lifting tray 112, when the lifting tray 112 ascends, the hot air in the space is extruded by the lifting tray 112, so that the hot air in the space passes through the first vent hole 1121 and pushes away the rubber air blocking ring 13a, and then enters the thermal insulation jacket 18 for temporary storage, and the hot air temporarily stored in the thermal insulation jacket 18 is used for insulating the combustion can 10, so that the flame can be ejected by the subsequent gas pipe 131.
When the hot air pushes away the rubber air-lock ring 13a and enters the inside of the insulating jacket 18, the movement of the rubber air-lock ring 13a is blocked by the insulating jacket 18, and the backflow of the hot air is blocked by the rubber air-lock ring 13a.
Further, the hot air in the space is extruded by the lifting disc 112, so that the hot air in the space passes through the first vent hole 1121 and pushes away the rubber air blocking ring 13a, and after entering the inside of the heat insulation jacket 18, the hot air in the heat insulation jacket 18 is pushed by the hot air subsequently entering the heat insulation jacket 18, and is discharged through the first air pipe 14a, and the waste air passing through the first air pipe 14a is split by the three-way pipe 15 to be discharged from the two second air pipes 16 respectively.
Because the two second gas transmission pipes 16 are respectively communicated with the alkaline washing tower 20 and the flue gas analyzer 30, the waste gas can enter the alkaline washing tower 20 and the flue gas analyzer 30, so that the waste gas is cleaned by the alkaline washing tower 20, the pollution caused by the waste gas is reduced, and the waste gas is analyzed by the flue gas analyzer 30.
Further, whether the waste gas passes through the second gas transmission pipe 16 or not is controlled through the gas valve 17, so that a tester can control whether the smoke needs to be cleaned and analyzed or not.
Specifically, referring to fig. 3, 4 and 5, the first power assembly 123 includes a first motor 1231 mounted on the outer surface of the thermal insulation jacket 18, a rotating shaft 1232 connected to one end of the first motor 1231 extending to the combustion tank 10, and a first bevel gear 1233 mounted on the outer surface of one end of the rotating shaft 1232 far away from the output shaft of the first motor 1231, one side of the first bevel gear 1233 is engaged with a second bevel gear 1234, and the second bevel gear 1234 is sleeved on the outer surface of the second bevel pushing cylinder 1132.
The second power assembly 144 includes a bracket 1441 mounted to a bottom end of the burn pot 10, a support plate 1442 mounted to an inside of the bracket 1441, and a second motor 1443 mounted to a lower surface of the support plate 1442. A first gear 1444 is connected to an outer surface of an output shaft of the second motor 1443, a second gear 1445 is engaged with one side of the first gear 1444, and the second gear 1445 is mounted on an outer surface of an end of the slag discharging pipe 143 extending to the outside.
It should be noted that, in this embodiment, the first motor 1231 drives the rotating shaft 1232 on the output shaft thereof to rotate, the rotating shaft 1232 drives the first bevel gear 1233 to rotate, the first bevel gear 1233 drives the second bevel gear 1234 engaged with the first bevel gear to rotate, and the second bevel push cylinder 1132 connected to the second bevel push cylinder is driven by the second bevel gear 1234 to rotate.
Further, the second motor 1443 drives the first gear 1444 to rotate through an output shaft thereof, drives the second gear 1445 engaged with the first gear 1444 to rotate through the first gear 1444, and drives the slag discharging pipe 143 to rotate through the second gear 1445.
As shown in fig. 1 to 10, there will also be provided a control method of a bundled wire cable burning test machine according to the above embodiment, comprising the steps of:
step one, the igniter 132, the relay 135, the solenoid valve 134 and the gas valve 17 are started through the PLC 136, and the igniter 132, the flowmeter 133, the relay 135, the solenoid valve 134 and the gas valve 17 are determined to be capable of being controlled;
step two, monitoring the gas flow passing through the gas pipe 131 by opening the flow meter 133, and enabling the exhaust gas in the combustion tank 10 to enter the flue gas analyzer 30 by opening the gas valve 17 so as to detect the components of the exhaust gas generated during the combustion of the electric wire and the cable;
step three, setting the gas flow passing through the gas pipe 131, controlling the gas flow passing through the gas pipe 131 through the electromagnetic valve 134, setting the ignition time of the igniter 132, and observing the test process by a tester
The specific operation mode of the invention is as follows:
inserting the electric wire and cable into the combustion can 10, making the electric wire and cable pass through the sliding cylinder 111 and the rotating locking ring 122 in sequence until the bottom end of the electric wire and cable contacts with the stepped limiting groove 145 in the filter screen cylinder 142 and is clamped into the stepped limiting groove 145, delivering gas through the gas pipe 131 connected with a gas source, igniting through the igniter 132, and spraying flame through the flame spraying port on the gas pipe 131, so that the sprayed flame is used for carrying out fire-baking test on the electric wire and cable, and detecting the flame retardant property of the electric wire and cable;
in the process of detecting the flame retardant property of the electric wire and cable, the first motor 1231 drives the rotating shaft 1232 on the output shaft thereof to rotate, the rotating shaft 1232 drives the first bevel gear 1233 to rotate, the first bevel gear 1233 drives the second bevel gear 1234 engaged therewith to rotate, the second bevel gear 1234 sleeve drives the second bevel pushing cylinder 1132 inserted thereon to rotate, the second bevel gear 1234 drives the rotating locking ring 122 to rotate, the rotating locking ring 122 drives the electric wire and cable to rotate, so that the electric wire and cable fully contact with the flame sprayed from the gas pipe 131;
through the rotation of the first bevel angle pushing cylinder 1131, the bottom end slope of the second bevel angle pushing cylinder 1132 slides on the top end slope of the first bevel angle pushing cylinder 1131 by means of the rotation of the first bevel angle pushing cylinder 1131, so that the first bevel angle pushing cylinder 1131 pushes the second bevel angle pushing cylinder 1132 to ascend and descend, so as to drive the lifting tray 112 sleeved thereon to ascend and descend through the ascending and descending of the second bevel angle pushing cylinder 1132, so that the hot air generated by the combustion of the electric wires and cables in the bottom end space of the lifting tray 112 is transmitted into the top end space of the lifting tray 112 through the lifting tray 112, and the hot air in the space is compressed, so that the hot air in the space enters the heat preservation jacket 18;
through the descending of the lifting disc 112, the air at the bottom end of the lifting disc 112 passes through the first vent hole 1121 and pushes away the air blocking cover 1122 through the compression of the lifting disc 112, so that the hot air enters the space at the top end of the lifting disc 112, when the lifting disc 112 ascends, the hot air in the space is extruded by the lifting disc 112, the hot air in the space passes through the first vent hole 1121 and pushes away the rubber air blocking ring 13a, and then enters the heat preservation jacket 18 for temporary storage, and the combustion can 10 is preserved in heat by the hot air temporarily stored in the heat preservation jacket 18, so that the flame is sprayed out by the subsequent gas pipe 131;
the hot air in the space is extruded by the lifting disc 112, so that the hot air in the space passes through the first vent hole 1121 and pushes away the rubber air blocking ring 13a, and after entering the inside of the heat insulation jacket 18, the hot air in the heat insulation jacket 18 is pushed by the hot air subsequently entering the heat insulation jacket 18, and is discharged through the first air pipe 14a, the waste gas passing through the first air pipe 14a is divided by the three-way pipe 15 to be discharged from the two second air pipes 16, and the two second air pipes 16 are respectively communicated with the alkaline tower 20 and the flue gas analyzer 30, so that the waste gas can enter the alkaline tower 20 and the flue gas analyzer 30, and the waste gas is cleaned by the alkaline tower 20, the pollution caused by the waste gas is reduced, and the waste gas is analyzed by the flue gas analyzer 30;
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the following descriptions are only illustrative and not restrictive, and that the scope of the present invention is not limited to the above embodiments: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A bundled wire and cable combustion testing machine is characterized by comprising a combustion tank (10), an alkaline washing tower (20) and a flue gas analyzer (30), wherein the alkaline washing tower (20) and the flue gas analyzer are connected with the gas transmission end of the combustion tank (10);
the combustion tank (10) is internally provided with a smoke conveying mechanism (11), a rotating mechanism (12), a combustion mechanism (13) and a processing mechanism (14) in sequence from top to bottom, the rotating mechanism (12) comprises a supporting plate (121) which is arranged at the top end of the combustion mechanism (13) and is arranged on the surface of the inner wall of the combustion tank (10), and a rotating locking ring (122) which is rotatably connected with the supporting plate (121) and is penetrated by a power supply cable, the driving end of the rotating locking ring (122) is connected with a first power assembly (123), a spring telescopic rod (1221) is arranged inside the rotating locking ring (122), and one end of the spring telescopic rod (1221) is connected with a pressing tooth (1222);
the flue gas conveying mechanism (11) comprises a sliding cylinder (111) which is arranged at the top end inside the combustion tank (10) and through which a power supply cable penetrates, a lifting disc (112) which is sleeved outside the sliding cylinder (111), and a reciprocating pushing assembly (113) which is arranged at the bottom end of the lifting disc (112), wherein a first vent hole (1121) is formed in a shell of the lifting disc (112), and an air blocking cover (1122) is arranged on the upper surface of the lifting disc (112);
the treatment mechanism (14) is inserted into a slag receiving hopper (141) at the bottom end of the combustion tank (10), a filter screen cylinder (142) mounted on the upper surface of the slag receiving hopper (141), and a slag discharging pipe (143) mounted on the lower surface of the slag receiving hopper (141), a stepped limiting groove (145) is formed in the top end of the slag discharging pipe (143), and one end, extending to the outside, of the slag discharging pipe (143) is connected with a second power assembly (144);
the reciprocating pushing assembly (113) comprises a first bevel pushing cylinder (1131) arranged on the upper surface of the rotating locking ring (122), and a second bevel pushing cylinder (1132) which is abutted against the upper surface of the first bevel pushing cylinder (1131) and is inserted into the lifting disc (112) in a penetrating manner;
the reciprocating pushing assembly (113) further comprises a plurality of first balls (1133) embedded in the lower surface of the second oblique pushing cylinder (1132), and a plurality of second balls (1134) embedded in the inner surface of the second oblique pushing cylinder (1132), the second oblique pushing cylinder (1132) is slidably connected with the upper surface of the first oblique pushing cylinder (1131) through the first balls (1133), the second oblique pushing cylinder (1132) is slidably connected with a guide groove (1135) through the second balls (1134), and the guide groove (1135) is arranged on the outer surface of the sliding cylinder (111);
the outer surface of the combustion tank (10) is sleeved with a heat-insulating jacket (18), the first power assembly (123) comprises a first motor (1231) installed on the outer surface of the heat-insulating jacket (18), a rotating shaft (1232) connected with one end, extending to the combustion tank (10), of the first motor (1231), and a first bevel gear (1233) installed on the outer surface of one end, far away from the output shaft of the first motor (1231), of the rotating shaft (1232), one side of the first bevel gear (1233) is connected with a second bevel gear (1234) in a meshing manner, and the second bevel gear (1234) is sleeved on the outer surface of the second bevel push cylinder (1132);
the second power assembly (144) comprises a support (1441) installed at the bottom end of the combustion tank (10), a support plate (1442) is installed inside the support (1441), a second motor (1443) is installed on the lower surface of the support plate (1442), a first gear (1444) is connected to the outer surface of an output shaft of the second motor (1443), a second gear (1445) is connected to one side of the first gear (1444) in a meshed mode, and the second gear (1445) is installed on the outer surface of one end, extending to the outside, of the slag discharging pipe (143).
2. The bunched wire and cable combustion testing machine of claim 1, wherein the combustion mechanism (13) comprises a gas pipe (131) installed inside the combustion tank (10) and an igniter (132) sequentially arranged on a shell of the gas pipe (131) from top to bottom, one end of the gas pipe (131) extending to the outside is connected with a flow meter (133) and a solenoid valve (134), the igniter (132) is connected with a relay (135), and the flow meter (133), the solenoid valve (134) and the relay (135) are electrically connected with a PLC (136).
3. The bundled wire and cable combustion testing machine as claimed in claim 1, characterized in that a plurality of first vent holes (1121) are formed in the top end of the combustion tank (10), and a rubber air blocking ring (13 a) arranged inside the heat insulation jacket (18) is mounted on the outer surface of the combustion tank (10).
4. The bunched wire and cable combustion testing machine of claim 3, wherein a first gas pipe (14 a) penetrates through the top end of the heat-insulating jacket (18), one end, far away from the heat-insulating jacket (18), of the first gas pipe (14 a) is connected with a three-way pipe (15), the gas outlet end of the three-way pipe (15) is connected with second gas pipes (16), and the gas outlet ends of the two second gas pipes (16) are respectively connected with the gas inlet ends of the alkaline tower (20) and the flue gas analyzer (30).
5. The bunched wire cable combustion testing machine of claim 4, wherein the air valves (17) are arranged on the shells of the two second air transmission pipes (16).
6. A control method of a bundled wire and cable burning test machine, characterized in that the bundled wire and cable burning test machine is the bundled wire and cable burning test machine according to any one of claims 1 to 5, the control method comprising the steps of:
the method comprises the steps that firstly, an igniter (132), a relay (135), an electromagnetic valve (134) and a gas valve (17) are started through a PLC (136), and the igniter (132), a flow meter (133), the relay (135), the electromagnetic valve (134) and the gas valve (17) can be controlled;
monitoring the gas flow passing through the gas pipe (131) by opening the flow meter (133), and enabling the waste gas in the combustion tank (10) to enter the smoke analyzer (30) by opening the gas valve (17) so as to detect the waste gas components generated during the combustion of the electric wire and the cable;
setting the gas flow passing through the gas pipe (131), controlling the gas flow passing through the gas pipe (131) through the electromagnetic valve (134), setting the ignition time of the igniter (132), and observing the test process by a tester.
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| CN114814077A (en) | 2022-07-29 |
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