CN211035247U - Change-over switch and graphitizing furnace - Google Patents
Change-over switch and graphitizing furnace Download PDFInfo
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- CN211035247U CN211035247U CN201921403627.6U CN201921403627U CN211035247U CN 211035247 U CN211035247 U CN 211035247U CN 201921403627 U CN201921403627 U CN 201921403627U CN 211035247 U CN211035247 U CN 211035247U
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Abstract
The utility model discloses a change-over switch and a graphitizing furnace, which relates to a switch and a graphitizing furnace, and aims to overcome the problems that the operation is complex when the existing series-parallel switch is switched in series-parallel connection, the accident rate is high, and the power consumption of graphitized tons is high under the current operating condition of the graphitizing furnace, wherein an actuating mechanism is arranged in a bracket frame and comprises a hydraulic push rod and a sliding mechanism; the sliding mechanism comprises a sliding rod, a connecting piece and a sliding shaft; the sliding shaft is transversely fixed in the bracket frame; the connecting piece is in sliding fit with the sliding shaft; the fixed end of the hydraulic push rod is fixed with the bracket frame body, and the moving end of the hydraulic push rod is fixed with the sliding rod through a connecting piece; the first contact and the second contact are fixed in the bracket frame; the first switching moving contact and the second switching moving contact are respectively fixed at two ends of the sliding rod and are respectively positioned at two sides of the first contact and the second contact.
Description
Technical Field
The utility model relates to a switch and graphitizing furnace.
Background
The existing old serial-parallel switching mode needs 3 independent switches as shown in fig. 10, so that the existing old serial-parallel switch is complex in operation, long in time and multiple in equipment during serial-parallel switching, the accident rate is greatly improved, and time, manpower and material resources are greatly wasted.
Moreover, under the current operating conditions of the graphitization furnace, the unit cost of the graphitized finished product is found to be too high. Through analysis, the main reasons for this situation are that the direct current no-load voltage of the special transformer system is designed to be too low, so that the furnace resistance cannot be rapidly reduced and the furnace temperature cannot be raised in the initial stage or even in the middle stage of graphitization, an ideal power transmission power and time curve is not met, and the power transmission time from the initial stage to the middle stage is greatly prolonged, so that part of active power is consumed in the process of furnace temperature accumulation, and the power consumption of graphitization tons is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the current series-parallel switch and operating complicacy when series-parallel switch, the accident rate is high to and the problem that graphitization ton power consumption is high under the current graphitization furnace operating condition, provide a change over switch.
The utility model discloses a change-over switch, which comprises a bracket frame body, an actuating mechanism, a first contact, a second contact, a first change-over moving contact and a second change-over moving contact;
an actuating mechanism is arranged in the support frame body, and comprises a hydraulic push rod and a sliding mechanism;
the sliding mechanism comprises a sliding rod, a connecting piece and a sliding shaft;
the sliding shaft is transversely fixed in the bracket frame;
the connecting piece is in sliding fit with the sliding shaft;
the fixed end of the hydraulic push rod is fixed with the bracket frame body, the moving end of the hydraulic push rod is fixed with the sliding rod through a connecting piece, and the moving direction of the moving end, the sliding shaft and the sliding rod are all parallel;
the first contact and the second contact are fixed in the bracket frame and are symmetrically arranged by taking the sliding rod as the center;
the first switching movable contact and the second switching movable contact are respectively fixed at two ends of the sliding rod and are respectively positioned at two sides of the first contact and the second contact;
when the moving end of the actuating mechanism moves along one direction, the first switching movable contact can be pulled to simultaneously enter the first contact and the second contact, so that the first contact is connected with the second contact in parallel;
or when the moving end of the actuating mechanism moves along the other direction, the second switching moving contact can be pulled to enter the first contact, so that the inside of the first contact is short-circuited.
The power supply series-parallel switching graphitization furnace using the change-over switch comprises a graphitization furnace body and a special transformer, wherein the special transformer comprises a transformer unit and a rectifier cabinet unit, and the change-over switch is arranged between the graphitization furnace body and the special transformer;
the positive output end of the transformer unit is electrically connected with the first positive output contact, and the negative output end of the transformer unit is electrically connected with the first negative output contact;
the positive output end of the rectifier cabinet unit is electrically connected with the second positive output contact, and the negative output end of the transformer unit is electrically connected with the second negative output contact;
the first anode input end of the graphitization furnace body is electrically connected with the first anode input contact, and the first cathode input end of the graphitization furnace body is electrically connected with the first cathode input contact;
the second anode input end of the graphitization furnace body is electrically connected with the second anode input contact, and the second cathode input end of the graphitization furnace body is electrically connected with the second cathode input contact.
The utility model has the advantages that:
the novel series-parallel switch only needs one switch device, and can be realized only by pushing and pulling a contact point when series-parallel switching is carried out. Switching time is greatly reduced, and waste of manpower and material resources is greatly reduced. The economic benefit is improved;
and secondly, a rectification system of the graphitization system is transformed into a direct current side, and an electric series-parallel connection power transmission mode of a change-over switch is adopted, so that the graphitization system obtains twice direct current no-load voltage at the initial power transmission stage, the power transmission time is shortened, the ton consumption is reduced, and the graphitization economic benefit is improved.
Drawings
Fig. 1 is a schematic structural diagram of a change-over switch according to the present invention;
fig. 2 is a schematic isometric view of a diverter switch of the present invention without a cradle frame;
fig. 3 is a schematic structural view of a diverter switch without a rack frame according to the present invention;
fig. 4 is a schematic bottom view of a diverter switch of the present invention without a rack frame;
fig. 5 is a schematic view of a matching structure of the first contact, the second contact, the first switching movable contact, the second switching movable contact and the sliding rod;
fig. 6 is a schematic view of a mating structure of the first contact and the second contact;
FIG. 7 is a circuit diagram of a parallel operation mode of the power supply series-parallel switching graphitization furnace according to the present invention;
FIG. 8 is a circuit diagram of the series operation mode of the power supply series-parallel switching graphitization furnace according to the present invention;
FIG. 9 is a circuit diagram of another series operation mode of the power supply series-parallel switching graphitization furnace of the present invention;
in fig. 7 to 8, a1 is a positive output end of the transformer unit 12, a2 is a negative output end of the transformer unit 12, B1 is a first positive input end of the graphitization furnace body 11, B2 is a first negative input end of the graphitization furnace body 11, A3 is a positive output end of the rectifier cabinet unit 13, a4 is a negative output end of the rectifier cabinet unit 13, B3 is a second positive input end of the graphitization furnace body 11, and B4 is a second negative input end of the graphitization furnace body 11;
fig. 10 is a schematic diagram of a conventional series-parallel switch structure.
Detailed Description
Detailed description of the invention
A change-over switch of the present embodiment, as shown in fig. 1, includes a holder frame 1, an actuator, a first contact 2, a second contact 3, a first change-over movable contact 4, and a second change-over movable contact 5;
an actuating mechanism is arranged in the support frame body 1, and comprises a hydraulic push rod 8 and a sliding mechanism;
the sliding mechanism comprises a sliding rod 9-1, a connecting piece 9-2 and a sliding shaft 9-3;
the sliding shaft 9-3 is transversely fixed in the bracket frame body 1;
the connecting piece 9-2 is in sliding fit with the sliding shaft 9-3;
the fixed end of the hydraulic push rod 8 is fixed with the bracket frame 1, the moving end of the hydraulic push rod 8 is fixed with the sliding rod 9-1 through the connecting piece 9-2, and the moving direction of the moving end, the sliding shaft 9-3 and the sliding rod 9-1 are all parallel;
the first contact 2 and the second contact 3 are fixed in the bracket frame 1, and the first contact 2 and the second contact 3 are symmetrically arranged by taking the sliding rod 9-1 as a symmetry;
the first switching movable contact 4 and the second switching movable contact 5 are respectively fixed at two ends of the sliding rod 9-1, and the first switching movable contact 4 and the second switching movable contact 5 are respectively positioned at two sides of the first contact 2 and the second contact 3;
when the moving end of the actuating mechanism moves along one direction, the first switching movable contact 4 can be pulled to simultaneously enter the first contact 2 and the second contact 3, so that the first contact 2 is connected with the second contact 3 in parallel;
or when the moving end of the actuating mechanism moves along the other direction, the second switching movable contact 5 can be pulled to enter the first contact 2, so that the first contact 2 is internally short-circuited.
In particular, the rack frame 1 cannot have a closed face in correspondence with the first switching movable contact 4 and the second switching movable contact 5, since the first switching movable contact 4 and the second switching movable contact 5 move outside the frame in a mobile manner.
In order to ensure the stress balance, the hydraulic push rod 8, the sliding rod 9-1, the connecting piece 9-2 and the sliding shaft 9-3 can be arranged in pairs, the connecting piece 9-2 is in sliding fit with the sliding shaft 9-3 through a lantern ring at the bottom, and meanwhile, the connecting piece 9-2 and the sliding rod 9-1 can be integrated.
When the hydraulic push rod 8 is pushed out, the first switching movable contact 4 is pushed into the first contact 2 and the second contact 3, the second switching movable contact 5 is made to be away from the first contact 2, when the hydraulic push rod 8 is pulled back, the second switching movable contact 5 is pulled into the first contact 2, and the first switching movable contact 4 is made to be away from the first contact 2 and the second contact 3.
In the present embodiment, each of the first contact 2 and the second contact 3 includes four conductive sheets insulated from each other, the four conductive sheets are arranged in parallel, and three gaps are formed between the four conductive sheets; the positions of the four conducting strips in the first joint 2 correspond to the positions of the four conducting strips in the second joint one by one;
the first contact insulation fixing rod 6 penetrates through the four conducting strips of the first contact 2, and two ends of the first contact insulation fixing rod 6 are respectively fixed with the support frame 1;
the second contact insulating fixing rod 7 passes through the four conducting strips of the second contact 3, and two ends of the first contact insulating fixing rod 6 are respectively fixed with the support frame 1.
Specifically, in order to ensure that the first contact insulating fixing rod 6 and the second contact insulating fixing rod 7 are more stable, the two pairs of structures should be provided, and meanwhile, the top ends of the four conductive sheets of the first contact 2 are respectively provided with a clamping sheet for connecting with external electrical equipment, and the bottom ends of the four conductive sheets of the second contact 3 are respectively provided with a clamping sheet for connecting with external electrical equipment.
In the present embodiment, the first switching movable contact 4 includes two conductive sheets and one insulating sheet;
the two conducting strips and one insulating strip are arranged in parallel with the surface at intervals, and the insulating strip is positioned between the two conducting strips;
the widths of the two conducting strips and the insulating strip are respectively matched with the widths of the three gaps in the first joint 2 and the widths of the three gaps in the second joint 3.
Specifically, two conductive sheets and the insulating sheet 4-1 can be inserted into three slots of the first contacts 2 and three slots of the second contacts 3 to form electrical connections.
In the present embodiment, the second switching movable contact 5 includes three conductive sheets;
the three conductive sheet surfaces are parallel to each other and arranged at intervals; and the widths of the three conducting strips are respectively matched with the widths of the three gaps in the first contact 2.
Specifically, in the same way, the three conductive sheets can be inserted into the three gaps of the first contact 2 to form electrical connection, so that the first contact 2 is short-circuited.
The best embodiment, which is further described in the first embodiment, further includes four fastening hydraulic cylinders 10;
two fastening hydraulic cylinders 10 of the four fastening hydraulic cylinders 10 are respectively fixed between the first contact 2 and the inner wall of the bracket frame 1 and used for pressing the first contact 2 inwards;
and the other two fastening hydraulic cylinders 10 are respectively fixed between the second contact 3 and the inner wall of the bracket frame 1 and are used for pressing the second contact 3 inwards.
Specifically, four fastening pneumatic cylinders 10 keep certain thrust through hydraulic pressure, make the conducting strip in first contact 2 and the second contact 3 keep the relatively fixed state, when preventing to circular telegram, because operating current is big, the contact is not good to generate heat big, so adopt fastening pneumatic cylinder 10 to compress tightly, contact good like this.
Best mode for carrying out the invention this example is a further description of the first embodiment, in this example,
the four conducting strips in the first contact 2 are a first positive input contact 2-1, a second positive input contact 2-2, a first negative input contact 2-3 and a second negative input contact 2-4 in sequence;
four conducting strips in the second contact 3 are a first positive output contact 3-1, a second positive output contact 3-2, a first negative output contact 3-3 and a second negative output contact 3-4 in sequence;
and the first positive input joint 2-1 and the first positive output joint 3-1, the second positive input joint 2-2 and the second positive output joint 3-2, the first negative input joint 2-3 and the first negative output joint 3-3, and the second negative input joint 2-4 and the second negative output joint 3-4 are in one-to-one correspondence.
The second embodiment is as follows: the power supply series-parallel switching graphitization furnace using the change-over switch comprises a graphitization furnace body 11 and a special transformer, wherein the special transformer comprises a transformer unit 12 and a rectifier cabinet unit 13, and the change-over switch is arranged between the graphitization furnace body and the special transformer;
the positive output end of the transformer unit 12 is electrically connected with the first positive output contact 3-1, and the negative output end of the transformer unit 12 is electrically connected with the first negative output contact 3-3;
the positive output end of the rectifier cabinet unit 13 is electrically connected with the second positive output contact 3-2, and the negative output end of the transformer unit 12 is electrically connected with the second negative output contact 3-4;
a first positive input end of the graphitization furnace body 11 is electrically connected with the first positive input contact 2-1, and a first negative input end of the graphitization furnace body 11 is electrically connected with the first negative input contact 2-3;
the second positive electrode input end of the graphitization furnace body 11 is electrically connected with the second positive electrode input contact 2-2, and the second negative electrode input end of the graphitization furnace body 11 is electrically connected with the second negative electrode input contact 2-4.
Specifically, as shown in fig. 7, in the production, when the parallel mode is used between the graphitization furnace body 11 and the special transformer:
the power transmission method of the transformer unit 12 is: the positive output end a1 of the transformer unit 12 is connected with the first positive input end B1 of the graphitization furnace body 11, and the negative output end a2 of the transformer unit 12 is connected with the first negative input end B2 of the graphitization furnace body 11, so that the transformer unit 12 transmits power to the graphitization furnace body 11.
Power transmission method of the rectifier box unit 13: the positive electrode output terminal A3 of the rectifier box unit 13 is connected to the second positive electrode input terminal B3 of the graphitization furnace body 11, and the negative electrode output terminal a4 of the rectifier box unit 13 is connected to the second negative electrode input terminal B4 of the graphitization furnace body 11.
The positive output terminal a1 of the transformer unit 12 and the positive output terminal A3 of the rectifier unit 13 supply power to the first positive input terminal B1 and the second positive input terminal B3 of the graphitization furnace body 11 at the same time. The negative output terminal a2 of the transformer unit 12 and the negative output terminal a4 of the rectifier cabinet unit 13 simultaneously supply power to the first negative input terminal B2 and the second negative input terminal B4 of the graphitization furnace body 11, thereby realizing parallel power supply.
The series power transmission mode is realized by connecting the rectifier cabinet unit 13 with a short circuit between the positive and negative electrodes and transmitting power to the graphitization furnace body 11 by using the transformer unit 12.
Therefore, when a series production mode is used in production, the transformer power transmission mode is the same as the parallel power transmission mode.
As shown in fig. 8, the series power transmission system is realized by short-circuiting the positive and negative electrodes of the rectifier unit 13 and transmitting power to the graphitization furnace main body 11 only by the transformer unit 12. The positive output end A3 of the rectifier cabinet unit 13 is disconnected from the positive input end B3 of the graphitization furnace body 11, the negative output end a4 of the rectifier cabinet unit 13 is disconnected from the negative input end B4 of the graphitization furnace body 11, and the positive output end A3 and the negative output end a4 of the rectifier cabinet unit 13 are connected to form a short circuit series connection mode. Fig. 9 shows a series power transmission mode of the short circuit of the transformer unit 12 and the output of the rectifier cabinet unit 13, which is not discussed in this application.
In summary, in production, the power transmission modes are often switched between parallel connection and series connection, and multiple times of connection and disconnection of power transmission and power connection are needed.
In a specific working mode, during parallel production, one conducting strip in the first switching movable contact 4 is pushed by the actuating mechanism to be between the first positive input contact 2-1 and the second positive input contact 2-2, and between the first positive output contact 3-1 and the second positive output contact 3-2, so that the positive output end a1 of the transformer unit 12 is conducted with the first positive input end B1 of the graphitization furnace body 11, and the positive output end A3 of the rectifier cabinet unit 13 is conducted with the second positive input end B3 of the graphitization furnace body 11.
The other conducting strip in the first switching movable contact 4 has an actuator to push the first negative input contact 2-3 and the second negative input contact 2-4, and the first negative output contact 3-3 and the second negative output contact 3-4, so that the negative output end a2 of the transformer unit 12 is conducted with the first negative input end B2 of the graphitization furnace body 11, and the negative output end a4 of the rectifier cabinet unit 13 is conducted with the second negative input end B4 of the graphitization furnace body 11.
During series production, the first switching movable contact 4 is pulled out by the actuating mechanism, the second switching movable contact 5 is pulled in, enters the space between the first positive input contact 2-1, the second positive input contact 2-2, the first negative input contact 2-3 and the second negative input contact 2-4, the output positive electrode and the negative electrode of the rectifier cabinet unit 13 are in short circuit, the internal series connection of the special transformer is realized, and only the positive output end A1 of the transformer unit 12 and the negative output end A2 of the transformer unit 12 are used for supplying power to the first positive input end B1 of the graphitization furnace body 11 and the first negative input end B2 of the graphitization furnace body 11, so that series power transmission production is realized.
In this embodiment, the positive electrode output end of the transformer unit 12 is electrically connected to the first positive electrode input end of the graphitization furnace body 11 all the time; the negative output end of the transformer unit 12 is electrically connected to the first negative input end of the graphitization furnace body 11 all the time.
Specifically, the series power transmission or parallel power transmission transformer unit 12 does not need to be switched on and off for the furnace power transmission, and therefore the output end of the transformer unit 12 and the input end of the graphitization furnace body 11 can be permanently connected.
The utility model discloses in adopt change over switch to carry out the principle explanation of series-parallel connection switching between graphitizing furnace body 11 and the special transformer as follows:
at present, the same rectifying circuit is basically adopted by the domestic graphitizing rectifying unit, the utility model discloses still. That is, the two groups of opposite polarity double-opposite star rectifying current circuits with opposite phases form a structure of in-phase and inverse parallel connection. As shown in fig. 7: a1 and a3 are a group of reversed polarity double-opposite star circuits, a2 and a4 are a group of reversed polarity double-opposite star circuits, which form a basic circuit of the rectification system, and three-phase five-column iron cores are utilized to clamp frequency tripling harmonic magnetic flux, so that the two groups of six-phase double-opposite star half-wave circuits are equivalent to a full-wave rectification structure.
In addition, a1 and a2, a3 and a4 are in-phase and inverse-phase parallel groups respectively, and the purpose is to make the phases of currents flowing through adjacent copper bar terminals in any time sequence absolutely opposite so as to balance the large reactance of a lead wire, reduce reactive power caused by bus leakage flux and improve power factor.
As shown in fig. 7: the rectification system of the graphitization furnace in the embodiment is in a state of 'two in-phase inverse parallel groups normally operating in parallel', if the direct-current voltage of the system needs to be increased, the rectification system needs to be in a state of 'two in-phase inverse parallel groups operating in series', as shown in fig. 8 or fig. 9. Thereby: the direct current voltage of a graphitizing furnace rectifying system is doubled, and the direct current is halved.
The parameter comparison and description of the rectification system of the series-parallel connection reconstructed graphitization furnace are shown in the following table:
TABLE 1 ideal parameters for the operation of the rectifying systems of the graphitizing furnaces before and after series-parallel transformation
Therefore, through series-parallel connection transformation, the rectification system of the graphitization furnace can realize that when the rectification system is connected in parallel: 32-75.1V, 120kA output; when in series connection: 64.1-150.2V, 60kA output ". By synthesizing the design experience of the graphitization furnace, the parameter can meet the requirements of various furnace conditions such as graphite electrodes, lithium battery cathode materials and the like, and the defects of the current power transmission mode can be completely improved by automatically adjusting the time points of series connection and parallel connection according to an ideal power curve.
Claims (8)
1. A change-over switch is characterized by comprising a bracket frame body (1), an actuating mechanism, a first contact (2), a second contact (3), a first change-over moving contact (4) and a second change-over moving contact (5);
an actuating mechanism is arranged in the support frame body (1), and comprises a hydraulic push rod (8) and a sliding mechanism;
the sliding mechanism comprises a sliding rod (9-1), a connecting piece (9-2) and a sliding shaft (9-3);
the sliding shaft (9-3) is transversely fixed in the bracket frame body (1);
the connecting piece (9-2) is in sliding fit with the sliding shaft (9-3);
the fixed end of the hydraulic push rod (8) is fixed with the support frame body (1), the moving end of the hydraulic push rod (8) is fixed with the sliding rod (9-1) through a connecting piece (9-2), and the moving direction of the moving end, the sliding shaft (9-3) and the sliding rod (9-1) are all parallel;
the first contact (2) and the second contact (3) are fixed in the bracket frame body (1), and the first contact (2) and the second contact (3) are symmetrically arranged by taking the sliding rod (9-1) as a reference;
the first switching movable contact (4) and the second switching movable contact (5) are respectively fixed at two ends of the sliding rod (9-1), and the first switching movable contact (4) and the second switching movable contact (5) are respectively positioned at two sides of the first contact (2) and the second contact (3);
when the moving end of the actuating mechanism moves along one direction, the first switching movable contact (4) can be pulled to simultaneously enter the first contact (2) and the second contact (3), so that the first contact (2) is connected with the second contact (3) in parallel;
or when the moving end of the actuating mechanism moves along the other direction, the second switching moving contact (5) can be pulled to enter the first contact (2), so that the inside of the first contact (2) is short-circuited.
2. A diverter switch according to claim 1, characterized in that it further comprises a first contact-insulating fixing bar (6) and a second contact-insulating fixing bar (7);
the first contact (2) and the second contact (3) respectively comprise four conducting strips which are insulated with each other, the surfaces of the four conducting strips are arranged in parallel with each other, and three cracks are formed between the four conducting strips; the positions of the four conducting strips in the first contact (2) correspond to the positions of the four conducting strips in the second contact one by one;
the first contact insulation fixing rod (6) penetrates through the four conducting strips of the first contact (2), and two ends of the first contact insulation fixing rod (6) are respectively fixed with the support frame body (1);
the second contact insulation fixing rod (7) penetrates through the four conducting strips of the second contact (3).
3. A diverter switch according to claim 2, characterized in that the first diverter contact (4) comprises two conducting strips and one insulating strip;
the two conducting strips and one insulating strip are arranged in parallel with the surface at intervals, and the insulating strip is positioned between the two conducting strips;
the widths of the two conducting strips and the insulating strip are respectively matched with the widths of the three cracks in the first connecting point (2) and the widths of the three cracks in the second connecting point (3).
4. A diverter switch according to claim 2, characterized in that the second moving contact (5) comprises three conducting strips;
the three conductive sheet surfaces are parallel to each other and arranged at intervals; and the widths of the three conducting strips are respectively matched with the widths of the three gaps in the first contact (2).
5. A diverter switch according to claim 1, 2, 3 or 4, characterized in that it further comprises four tightening cylinders (10);
two fastening hydraulic cylinders (10) of the four fastening hydraulic cylinders (10) are respectively fixed between the first contact (2) and the inner wall of the support frame body (1) and used for pressing the first contact (2) inwards;
and the other two fastening hydraulic cylinders (10) are respectively fixed between the second contact (3) and the inner wall of the bracket frame body (1) and are used for pressing the second contact (3) inwards.
6. A diverter switch according to claim 2, 3 or 4,
the four conducting strips in the first contact (2) are a first positive input contact (2-1), a second positive input contact (2-2), a first negative input contact (2-3) and a second negative input contact (2-4) in sequence;
four conducting strips in the second contact (3) are a first positive output contact (3-1), a second positive output contact (3-2), a first negative output contact (3-3) and a second negative output contact (3-4) in sequence;
and the first positive input contact (2-1) and the first positive output contact (3-1), the second positive input contact (2-2) and the second positive output contact (3-2), the first negative input contact (2-3) and the first negative output contact (3-3), and the second negative input contact (2-4) and the second negative output contact (3-4) are in one-to-one correspondence.
7. The power supply series-parallel switching graphitization furnace using the change-over switch of claim 6, comprising a graphitization furnace body (11) and a special transformer, the special transformer comprising a transformer unit (12) and a rectifier cabinet unit (13), characterized in that the change-over switch is provided between the graphitization furnace body and the special transformer;
the positive output end of the transformer unit (12) is electrically connected with the first positive output contact (3-1), and the negative output end of the transformer unit (12) is electrically connected with the first negative output contact (3-3);
the positive output end of the rectifier cabinet unit (13) is electrically connected with the second positive output contact (3-2), and the negative output end of the transformer unit (12) is electrically connected with the second negative output contact (3-4);
a first positive electrode input end of the graphitization furnace body (11) is electrically connected with the first positive electrode input contact (2-1), and a first negative electrode input end of the graphitization furnace body (11) is electrically connected with the first negative electrode input contact (2-3);
the second anode input end of the graphitization furnace body (11) is electrically connected with the second anode input contact (2-2), and the second cathode input end of the graphitization furnace body (11) is electrically connected with the second cathode input contact (2-4).
8. The power supply series-parallel switching graphitization furnace according to claim 7, wherein the positive output end of the transformer unit (12) is electrically connected with the first positive input end of the graphitization furnace body (11) all the time; the negative output end of the transformer unit (12) is electrically connected with the first negative input end of the graphitization furnace body (11) all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921403627.6U CN211035247U (en) | 2019-08-27 | 2019-08-27 | Change-over switch and graphitizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921403627.6U CN211035247U (en) | 2019-08-27 | 2019-08-27 | Change-over switch and graphitizing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211035247U true CN211035247U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921403627.6U Active CN211035247U (en) | 2019-08-27 | 2019-08-27 | Change-over switch and graphitizing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211035247U (en) |
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2019
- 2019-08-27 CN CN201921403627.6U patent/CN211035247U/en active Active
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