CN212404312U - Stay cord equipment of electrolysis trough generating line protection based on quadrature pulse technique - Google Patents
Stay cord equipment of electrolysis trough generating line protection based on quadrature pulse technique Download PDFInfo
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- CN212404312U CN212404312U CN202020864467.1U CN202020864467U CN212404312U CN 212404312 U CN212404312 U CN 212404312U CN 202020864467 U CN202020864467 U CN 202020864467U CN 212404312 U CN212404312 U CN 212404312U
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Abstract
The utility model discloses an electrolysis trough generating line protection's stay cord equipment based on quadrature pulse technique, including wire rope, automatic winding mechanism, quadrature encoder and shell, shell one end opening, quadrature encoder fixed connection is in the shell, and automatic winding mechanism installs in the shell and is connected with the pivot of quadrature encoder, and wire rope penetrates from the shell lower extreme and is connected to automatic winding mechanism. The utility model discloses a wire rope, automatic winding mechanism and quadrature encoder, adopt the quadrature encoder to calculate the winding number of turns of wire rope, thereby indirect calculation wire rope walking distance (walking distance is the direct proportion relation with the encoder number of turns), wire rope fixed connection is on the generating line, thereby record the distance of walking about the generating line, the computational result is more accurate, need not periodic calibration, the seat groove that arouses when effectively avoiding the generating line to be close the bound position with take off utmost point, improve the safety generation greatly, reduce the probability of occurrence of major safety accident, reduce the loss that leads to because of equipment damage or shut down.
Description
Technical Field
The utility model belongs to the technical field of electrolysis trough generating line protection equipment, a stay cord equipment of electrolysis trough generating line protection based on quadrature pulse technique is related to.
Background
The position of a bus of the aluminum electrolysis cell is an important parameter of the production process, and relates to process parameters and safety factors. The position of the bus is directly controlled by a lifting motor and a reduction gearbox, the lifting motor is controlled by a special equipment slot controller, and the ascending or descending of the bus is controlled by the positive and negative rotation of the lifting motor. The movement of the bus can cause the cell voltage to change, and generally, the rising of the bus can cause the cell voltage to rise, and the falling of the bus can cause the cell voltage to fall. The cell control machine determines the control state (namely the static, lifting and descending state of the bus) of the motor by reading the numerical value of the voltage of the electrolytic cell and carrying out complexity and calculation with other parameters. The voltage of the electrolytic bath is stabilized in a range, and the requirements of production process and safety are met.
The limit movement distance of the bus bar is 400 mm (difference between the uppermost and lowermost positions). In the past, a cell control machine analyzes the lifting of a bus relative to the upper end and the lower end by analyzing the voltage of an electrolytic cell, and the relationship between the bus moving distance and the voltage change value of the electrolytic cell is not a simple functional relationship. For the absolute position of the busbar, only an estimation can be used: and estimating the displacement distance of the bus according to the time of the positive and negative rotation actions of the motor and the initial position of the bus. This approach is extremely error-intensive and requires the operator to calibrate periodically.
The bus position is an extremely important parameter in relation to safety, and is mainly represented as follows: when the position of the bus is close to the upper limit position and the lower limit position, a seat slot and a pole drop are easily caused, and a major safety accident is caused; seat groove: the bus bar excessively moves downwards, so that the aluminum liquid in a high-temperature molten state in the electrolytic bath is spilled outwards, and the electrolytic bath is scrapped; removing the electrode: the bus moves upwards excessively to force the anode hung on the bus to be separated from electrolyte in the electrolytic cell, arc discharge can occur at the moment of separation, due to the fact that the current of the electrolytic cell is extremely large (generally, 300000 amperes to 600000 amperes direct current), the arc discharge can cause explosion, the electrolytic cell and a connector thereof are burnt out in the moment, due to the fact that hundreds of electrolytic cells in a workshop are all connected in series through the current, other electrolytic cells can be powered off at the same time, the power failure loss of each electrolytic cell is caused by millions of RMB, and casualties of operators can be caused.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the utility model provides a stay cord equipment of electrolysis trough generating line protection based on orthogonal pulse technique to solve the problem that exists among the prior art.
The utility model discloses the technical scheme who takes does: the utility model provides a stay cord equipment of electrolysis trough generating line protection based on quadrature pulse technique, includes wire rope, automatic winding mechanism, quadrature encoder and shell, and shell one end opening, quadrature encoder fixed connection are in the shell, and automatic winding mechanism installs in the shell and is connected with the pivot of quadrature encoder, and wire rope penetrates from the shell lower extreme and is connected to automatic winding mechanism.
Preferably, the automatic winding mechanism comprises a clockwork spring, a wheel disc and a rotating shaft, the rotating shaft is fixedly connected to a rotating shaft of the orthogonal encoder, the wheel disc is fixedly connected to the rotating shaft, the free end of the inner ring of the clockwork spring is fixedly connected to the free end of the outer ring of the clockwork spring, and the free end of the outer ring of the clockwork spring is fixedly connected to.
Preferably, the wheel disc is provided with a three-circle spiral groove, the upper end of the steel wire rope is fixedly connected to one end of the spiral groove, and the length of a spiral line of the spiral groove is larger than the effective stroke of the bus.
Preferably, the wire rope outlet hole on the outer shell is vertically tangent to the middle ring of the spiral groove.
Preferably, the steel wire rope is fixedly connected with a limiting block.
Preferably, the housing has a flange provided at an end thereof and is covered with an end cap having a size equal to that of the flange.
Preferably, the shell is fixedly connected to a fixing plate above the electrolytic cell, and the outer end of the steel wire rope is vertically and fixedly connected to the bus.
Preferably, the orthogonal encoder is connected to a single chip microcomputer, the single chip microcomputer is connected to data acquisition equipment, and the data acquisition equipment is connected to the cell controller.
The utility model has the advantages that: compared with the prior art, the utility model discloses a wire rope, automatic winding mechanism and quadrature encoder, adopt the quadrature encoder to calculate the winding number of turns of wire rope, thereby indirect calculation wire rope walking distance (walking distance is the direct proportion relation with the encoder number of turns), wire rope fixed connection is on the generating line, thereby record the distance of walking about the generating line, the computational result is more accurate, need not periodic calibration, the seat groove that arouses when effectively avoiding the generating line to be close upper and lower limit position with take off utmost point, improve the safety and generate greatly, reduce the probability of occurrence of major safety accident, reduce because of the loss that equipment damage or shut down and lead to.
Drawings
Fig. 1 is a schematic side view of the cross-sectional structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a front view of the present invention;
fig. 4 is a schematic view of the installation structure of the present invention;
FIG. 5 is a single chip microcomputer control circuit;
FIG. 6 is a power supply circuit for converting 12V to 5V;
FIG. 7 is a power supply circuit for converting 5V to 3.3V;
FIG. 8 is an enlarged schematic view of the upper left corner of FIG. 5;
fig. 9 is an enlarged structural diagram of the lower left corner of fig. 5.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in figures 1-9, a stay cord device for protecting an electrolytic cell bus based on orthogonal pulse technology comprises a steel wire rope 1, an automatic winding mechanism 2, an orthogonal encoder 3 and a shell 4, wherein one end of the shell 4 is open, the orthogonal encoder 3 is fixedly connected in the shell 4, the automatic winding mechanism 2 is installed in the shell 4 and is connected with a rotating shaft of the orthogonal encoder 3, the steel wire rope 1 penetrates into the automatic winding mechanism 2 from the lower end of the shell 4, the shell 4 is fixedly connected on a fixed plate 11 of a support frame above an electrolytic cell, the outer end of the steel wire rope 1 is vertically and fixedly connected on a bus 12, the device is fixed on a fixed frame divided on the bus, the tail end of the steel wire rope is welded on the bus, the bus moves downwards, a steel wire is pulled out, the bus moves upwards, a spring inside an instrument withdraws the steel wire rope, the bus 12 is provided, the limit of the up-down movement is 400 mm, see the distance from the upper limit position 13 to the lower limit position 14 in fig. 4, the left end of the bus 12 is provided with a position indicator needle 16, the position indicator needle 16 is perpendicular to a position scale 15, the position scale 15 is installed above the electrolytic cell, the upper end and the lower end of the position scale 15 are respectively provided with the upper limit position 13 and the lower limit position 14, the orthogonal encoder is fixed in the shell in a resin filling mode and cannot be detached for maintenance.
Preferably, above-mentioned automatic winding mechanism 2 includes clockwork spring 5, rim plate 6 and axis of rotation 7, axis of rotation 7 fixed connection is in quadrature encoder 3's pivot, rim plate 6 fixed connection is in axis of rotation 7, 7 free ends of axis of rotation are fixed connection 5 inner circles free ends of clockwork spring, 5 outer circles free ends of clockwork spring are fixed connection on shell 4, wire rope 1 is connected to rim plate 6, this automatic winding mechanism is under clockwork spring's effect, can realize wire rope's automatic winding and accomodate, and under the exogenic action, outwards pull out wire rope, quadrature encoder can real-time measurement rotatory number of turns, thereby indirect calculation generating line walking's distance, mechanical system's automatic winding, moreover, the steam generator is simple in structure.
Preferably, the wheel disc 6 is provided with three-circle spiral grooves, the upper end of the steel wire rope 1 is fixedly connected to one end of each spiral groove, the length of a spiral line of each spiral groove is larger than the effective stroke of the bus, and the requirement on the traveling distance of the bus can be met.
Preferably, the wire outlet hole of the steel wire rope on the outer shell 4 is vertically tangent to the middle ring of the spiral groove, so that the steel wire rope and the wheel disc are protected from being stressed to the maximum.
Preferably, fixedly connected with stopper 8 on above-mentioned wire rope 1, in the restriction wire rope returns the shell, conveniently pull out the connection and facilitate the use, stopper 8 is the cylinder cover of rubber, closely cup joints on wire rope, and the side adopts holding screw to penetrate locking, and locking is reliable.
Preferably, the housing 4 is provided with a flange 9 at one end thereof and is covered with an end cap 10 having a size equal to that of the flange, so as to facilitate installation of the quadrature encoder and the automatic winding mechanism into the housing and secure attachment of the housing to the fixed plate.
Preferably, the orthogonal encoder 3 is connected to a single chip microcomputer, the single chip microcomputer is connected to data acquisition equipment, the single chip microcomputer is arranged on the inner side of the shell and is filled and fixed with resin, the single chip microcomputer is connected with an interface to the side face of the shell through a lead wire, the interface is connected to the data acquisition equipment through a signal and a power cord, the data acquisition equipment is connected to a cell control machine (an electrolytic cell control system computer), and the cell control machine is located beside the electrolytic cell and is responsible for acquiring and controlling various parameters of the electrolytic cell.
In fig. 5, the single chip microcomputer adopts LPC1754, PHA and PHB are encoder inputs, DOUT and SOUT transmit signals to the outside, and are connected by a cable and transmitted to the cell controller for collection, fig. 6 is a 12V to 5V power circuit, 1 and 2 are external power lines, and fig. 7 is a 5V to 3.3V power circuit for supplying power to the single chip microcomputer, 12S05 does not have 3.3V output, and LM1117 does not have an isolation function, and the two are used together.
The use principle is as follows: the inside clockwork spring 5 that is equipped with of shell is equipped with many circles, and with flexible wire rope 1 back pull, when not receiving external force, wire rope 1 is pulled back to zero position (locating piece 8 is close to the shell downside). When the cable is pulled by an external force, the steel wire rope 1 extends outwards, and because one end of the steel wire rope 1 is fixed on the bus 12, when the bus 12 moves downwards, the steel wire rope 1 is stretched out of the shell, the orthogonal encoder 3 rotates forwards, and the rotation angle is in direct proportion to the moving distance of the bus 12; when the bus 12 moves upwards, the steel wire rope 1 is withdrawn outwards and inwards, the orthogonal encoder 3 is reversed, and the rotation angle is in direct proportion to the moving distance of the bus.
The utility model discloses use the quadrature pulse technique to measure the generating line and remove, the distance that the object removed can not only be measured to the quadrature pulse method, can also confirm translation rate and direction.
The orthogonal encoder (standard product) is a rotatable grating grid, when the grating grid rotates, a certain amount of two pulses (namely: 500 pulses per circle of encoder in the embodiment) are output every 1 circle of rotation, namely, A pulse and B pulse, the duty ratio and the frequency of the two pulses are completely consistent, but the phase difference is 90 degrees, when the grating rotates in the forward direction, the A pulse leads the B pulse by 90 degrees, and when the grating rotates in the forward and reverse directions, the B pulse leads the A pulse by 90 degrees.
The orthogonal encoder used by the device outputs 500 pulses every 1 rotation, when the bus moves, the linear displacement of the bus is changed into rotary motion through the rope pulling device (the mechanical structure of the rope pulling device instrument is detailed below), thus when the bus rises, the orthogonal encoder rotates in the forward direction, when the bus descends, the orthogonal encoder rotates in the reverse direction, when the bus moves 400 mm, the orthogonal encoder rotates 2 turns, 1000 orthogonal pulses are output, and the pulse signals are sent to the embedded single chip computer system (located in the computer of the electrolytic bath control system) through a circuit. The computer system reads the number and phase difference of the pulses to obtain the moving position and direction of the bus.
For example, the computer reads 10 pulses in one second, with the A pulse leading the B pulse by 90, and it can be seen that the bus movement is: rises by 400 x (10/1000) =4 mm in one second. (adding the initial position to obtain the final position, and updating the initial position and storing in the cell controller system).
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention, therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (8)
1. A stay cord equipment of electrolysis trough generating line protection based on orthogonal pulse technique which characterized in that: including wire rope (1), automatic winding mechanism (2), quadrature encoder (3) and shell (4), shell (4) one end opening, quadrature encoder (3) fixed connection is in shell (4), and automatic winding mechanism (2) are installed in shell (4) and are connected with the pivot of quadrature encoder (3), and wire rope (1) penetrates from shell (4) lower extreme and is connected to automatic winding mechanism (2).
2. The pulling rope device for the protection of the electrolytic cell busbar based on the orthogonal pulse technology as claimed in claim 1, is characterized in that: automatic winding mechanism (2) are including clockwork spring (5), rim plate (6) and axis of rotation (7), axis of rotation (7) fixed connection in the pivot of quadrature encoder (3), rim plate (6) fixed connection on axis of rotation (7), axis of rotation (7) free end fixed connection clockwork spring (5) inner circle free end, clockwork spring (5) outer lane free end fixed connection is on shell (4).
3. The pulling rope device for the protection of the electrolytic cell busbar based on the orthogonal pulse technology as claimed in claim 2, is characterized in that: the wheel disc (6) is provided with three circles of spiral grooves, the upper end of the steel wire rope (1) is fixedly connected to one end of each spiral groove, and the length of a spiral line of each spiral groove is larger than the effective stroke of the bus.
4. The pulling rope device for the protection of the electrolytic cell busbar based on the orthogonal pulse technology as claimed in claim 2, is characterized in that: the wire rope outlet hole on the outer shell (4) is vertically tangent to the middle ring of the spiral groove.
5. The pulling rope device for the busbar protection of the electrolytic cell based on the orthogonal pulse technology as claimed in claim 1 or 2, wherein: the steel wire rope (1) is fixedly connected with a limiting block (8).
6. A drawing line device for protecting the bus bar of an electrolytic cell based on the orthogonal pulse technology according to any one of claims 1 to 4, characterized in that: one end of the shell (4) is provided with an opening and a flange (9) which is covered by an end cover (10) with the same size as the flange.
7. A drawing line device for protecting the bus bar of an electrolytic cell based on the orthogonal pulse technology according to any one of claims 1 to 4, characterized in that: the shell (4) is fixedly connected on a fixing plate (11) above the electrolytic cell, and the outer end of the steel wire rope (1) is vertically and fixedly connected on a bus (12).
8. A drawing line device for protecting the bus bar of an electrolytic cell based on the orthogonal pulse technology according to any one of claims 1 to 4, characterized in that: the orthogonal encoder (3) is connected to the single chip microcomputer, the single chip microcomputer is connected to the data acquisition equipment, and the data acquisition equipment is connected to the cell control machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020864467.1U CN212404312U (en) | 2020-05-21 | 2020-05-21 | Stay cord equipment of electrolysis trough generating line protection based on quadrature pulse technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020864467.1U CN212404312U (en) | 2020-05-21 | 2020-05-21 | Stay cord equipment of electrolysis trough generating line protection based on quadrature pulse technique |
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| CN212404312U true CN212404312U (en) | 2021-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485257A (en) * | 2020-05-21 | 2020-08-04 | 贵州创新轻金属工艺装备工程技术研究中心有限公司 | Pull rope device for protecting electrolytic cell bus based on orthogonal pulse technology |
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- 2020-05-21 CN CN202020864467.1U patent/CN212404312U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485257A (en) * | 2020-05-21 | 2020-08-04 | 贵州创新轻金属工艺装备工程技术研究中心有限公司 | Pull rope device for protecting electrolytic cell bus based on orthogonal pulse technology |
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