Voltage-regulating rectifier transformer control circuit and transformer

Abstract

The utility model provides a control circuit of a voltage-regulating rectifier transformer. The control circuit comprises a first voltage-regulating transformer; a change-over switch; the reversing switch is provided with an input end, a first output end and a second output end; a first rectifier transformer and a second rectifier transformer; the output side of each rectifier transformer is provided with a plurality of output windings; the input side of the first regulating transformer is connected with an external power supply, and the output side is connected with the input end of the reversing switch; a first output end and a second output end of the reversing switch are respectively connected with input sides of the first rectifier transformer and the second rectifier transformer; the input end of the reversing switch is connected with an external power supply, the first output end and the second output end of the reversing switch are respectively connected with the input sides of the first voltage regulating transformer and the second voltage regulating transformer, and the output side of the first voltage regulating transformer is connected with the input side of the first rectifier transformer. The output side of the second regulating transformer is connected with the input side of the second rectifier transformer. According to the scheme, the purposes of user capacity maximization and energy-saving and economical operation can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolysis production line control, in particular to a voltage regulating rectifier transformer control circuit and a transformer. Background Art

[0002] Electrolysis is the process of passing an electric current through an electrolyte solution or a molten electrolyte (also known as an electrolyte) to cause a redox reaction at the cathode and anode. The main equipment of the electrolysis production line includes electrolytic cells and corrosive materials, electrolytes and circulation pipes, pumps, ventilation facilities, anode and cathode units, etc.

[0003] With the upgrading of production technology and the trend of energy conservation and emission reduction, reducing the unit production energy consumption of the electrolytic production line is the unremitting pursuit of various electrolytic enterprises. For example, the Chinese invention patent application with application number CN201010206986.X discloses a method for reducing the unit production energy consumption of aluminum electrolytic cells. By using a low-melting-point and high-conductivity flux (electrolyte) for aluminum electrolysis, the voltage drop of the electrolyte per unit current can be reduced, the current efficiency of the electrolytic cell can be improved, and the purpose of reducing costs and increasing efficiency of the electrolytic plant can be achieved. For example, the Chinese invention patent application with application number CN202311555110.X discloses a flexible production energy control device for aluminum electrolytic cells. According to the production conditions and external conditions of different electrolytic cells, the shape, quantity and control form of the heat exchange device are customized, and the structure is simple and the reliability is high, so as to realize the flexible production energy control of aluminum electrolytic cells. Another example is the Chinese utility model application number CN201520188460.1, which discloses a capacity distribution system for an electrolytic water fluid system. Through a PLC control system and a liquid level meter, the liquid in each water tank is controlled, achieving the goal of more use and more production, less use and less production, energy saving and emission reduction, and saving manpower and labor. The above methods are all to improve the part where the electrolysis reaction occurs to reduce production energy consumption, but as the technology matures, the improvement effect of this part gradually weakens, and it is necessary to find new improvement directions to further reduce energy consumption and improve production line efficiency.

[0004] In view of this, the present application proposes a voltage regulating rectifier transformer control circuit and a transformer. Utility Model Content

[0005] In view of the need to find new improvement directions in the existing technology to further reduce energy consumption, the utility model provides a voltage regulating rectifier transformer control circuit and transformer, which can increase the control flexibility inside the voltage regulating rectifier transformer, reduce the impact of maintenance work on production capacity, and reduce power loss. The specific technical solution is as follows:

[0006] A voltage regulating rectifier transformer control circuit, comprising:

[0007] The first voltage regulating transformer;

[0008] A reversing switch; the reversing switch is provided with an input end and a first output end and a second output end;

[0009] A first rectifier transformer and a second rectifier transformer; the output side of each rectifier transformer is provided with a plurality of output windings to provide rectifier power to a plurality of rectifier cabinets of the electrolysis production line;

[0010] The input side of the first voltage regulating transformer is connected to an external power supply, and the output side is connected to the input end of the reversing switch; the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second rectifier transformers to adjust the state of the first voltage regulating transformer supplying power to the two rectifier transformers; or

[0011] It also includes a second voltage-regulating transformer, the input end of the reversing switch is connected to the external power supply, the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second voltage-regulating transformers, the output side of the first voltage-regulating transformer is connected to the input side of the first rectifier transformer, and the output side of the second voltage-regulating transformer is connected to the input side of the second rectifier transformer, so as to adjust the state of the external power supply supplying power to the two voltage-regulating transformers and the rectifier transformer.

[0012] Furthermore, the reversing switch comprises:

[0013] A connecting member; the connecting member is provided with an input end, a first output end, a second output end and a vacant end which are insulated from each other; the input end of the connecting member serves as the input end of the reversing switch; the first output end and the second output end of the connecting member serve as the first output end and the second output end of the reversing switch respectively;

[0014] A switching member; the switching member is electrically connected to the input end; a first moving contact and a second moving contact are provided on the switching member; the first moving contact switches between the first output end and the idle end of the connecting member; and the second moving contact switches between the second output end and the idle end of the connecting member.

[0015] Furthermore, the connecting member adopts a circular structure; a plurality of contacts are arranged on the connecting member, wherein a first contact and a second contact are arranged in the middle in the upper and lower directions, a third contact, a fourth contact and a fifth contact are arranged on the right side, and a sixth contact, a seventh contact and an eighth contact are arranged on the left side;

[0016] The first contact serves as the input end of the connector; the third and eighth contacts are respectively located on both sides of the first contact and constitute the idle end of the connector; the fourth and fifth contacts serve as the first output end of the connector after being connected; the sixth and seventh contacts serve as the second output end of the connector after being connected; the first moving contact contacts the third, fourth or fifth contact; and the second moving contact contacts the sixth, seventh or eighth contact.

[0017] Furthermore, the switching member includes a rotating shaft; the rotating shaft is arranged at the center of the connecting member and is electrically connected to the first contact; the first moving contact and the second moving contact are electrically connected to the rotating shaft.

[0018] Furthermore, the contacts are evenly distributed on the connecting member.

[0019] Furthermore, the first moving contact and the second moving contact are symmetrically arranged with each other; when the first moving contact contacts the third contact, the second moving contact contacts the sixth contact; when the first moving contact contacts the fourth contact, the second moving contact contacts the seventh contact; when the first moving contact contacts the fifth contact, the second moving contact contacts the eighth contact.

[0020] Further, when the first moving contact contacts the first contact point, the second moving contact contacts the seventh contact point.

[0021] Furthermore, the voltage regulating transformer adopts a three-phase positive and negative voltage regulating auto-coupling voltage regulating transformer.

[0022] Furthermore, the first and second rectifier transformers are both three-phase transformers; the input side winding of each rectifier transformer adopts a Yanbian triangle winding connection structure, and the output side winding adopts a star winding connection structure.

[0023] A voltage regulating rectifier transformer comprises the voltage regulating rectifier transformer control circuit mentioned above.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] 1. Use one voltage regulating rectifier transformer to connect multiple rectifier cabinets to supply power to multiple loads, that is, one voltage regulating rectifier transformer outputs several groups of voltages to supply power to several rectifier cabinets, thus reducing the primary equipment investment cost.

[0026] 2. There is no need to make major changes to the entire structure of the existing electrolysis production line. Only a reversing switch needs to be added to the voltage-regulating rectifier transformer. During maintenance, only the corresponding single rectifier transformer or voltage-regulating transformer can be stopped. This can increase the control flexibility inside the voltage-regulating rectifier transformer, reduce the impact of maintenance work on production capacity, reduce power loss, and achieve the goal of maximizing user production capacity and energy-saving and economical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0028] Figure 1 This is a structural schematic diagram of the first voltage regulating rectifier transformer control circuit of the utility model;

[0029] Figure 2 It is a structural schematic diagram of another voltage regulating rectifier transformer control circuit of the utility model;

[0030] Figure 3 It is a structural diagram of a reversing switch.

[0031] Explanation of the accompanying drawings: first contact 1, second contact 2, third contact 3, fourth contact 4, fifth contact 5, sixth contact 6, seventh contact 7, eighth contact 8, connecting piece 9, rotating shaft 10, first moving contact 11, second moving contact 12. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0034] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0035] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0036] Embodiment 1

[0037] like Figure 1 The structure diagram of the first voltage regulating rectifier transformer control circuit is shown, including:

[0038] A first voltage regulating transformer; the first voltage regulating transformer is used to regulate and transform the input AC power supply before outputting it;

[0039] A reversing switch; the reversing switch is provided with an input terminal and a first output terminal and a second output terminal; the reversing switch has the function of adjusting the connection state between its own input terminal and the first output terminal and the second output terminal;

[0040] A first rectifier transformer and a second rectifier transformer; the output side of each rectifier transformer is provided with a plurality of output windings to provide rectifier power to a plurality of rectifier cabinets of the electrolysis production line;

[0041] The input side of the first voltage regulating transformer is connected to an external power supply, and the output side is connected to the input end of the reversing switch; the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second rectifier transformers to adjust the state of the first voltage regulating transformer supplying power to the two rectifier transformers.

[0042] Through a rectifier transformer with multiple rectifier cabinets, powering multiple loads, that is, a rectifier transformer outputs several groups of voltages to power several rectifier cabinets, and at the same time drives two rectifier transformers through a voltage regulating transformer. Through the circuit structure of one belt multiple layers, not only can the primary equipment investment cost be reduced, but also the energy consumption on the equipment can be reduced by reducing the number of equipment. Furthermore, this application does not need to make major changes to the existing whole line structure. It only needs to add a reversing switch, so that only the corresponding single rectifier transformer can be stopped during maintenance, which can increase the control flexibility inside the voltage regulating rectifier transformer and reduce the impact of maintenance work on production capacity. Compared with only realizing the shutdown of one set of electrolysis devices and the operation of one set of electrolysis devices through the knife switch on the DC bus of the rectifier cabinet, but the rectifier transformer corresponding to the shut down device is still in a no-load operation state, which increases the power loss, and the operation is not energy-saving and uneconomical. The present application scheme can achieve the purpose of maximizing user production capacity and energy-saving and economical operation.

[0043] In specific implementation, Figure 3 As shown, the reversing switch comprises:

[0044] Connecting member 9; the connecting member 9 is provided with an input end, a first output end, a second output end and a vacant end which are insulated from each other; the input end of the connecting member 9 serves as the input end of the reversing switch; the first output end and the second output end of the connecting member 9 serve as the first output end and the second output end of the reversing switch respectively;

[0045] Commutator; the commutator is electrically connected to the input end; the commutator is provided with a first moving contact 11 and a second moving contact 12; the first moving contact 11 switches between the first output end and the idle end of the connector 9; the second moving contact 12 switches between the second output end and the idle end of the connector 9. By switching the two moving contacts, the input end can be connected only to the first output end, or the input end is connected only to the second output end, or the input end is connected to the first output end and the second output end at the same time, so as to meet the connection and commutation requirements of the first voltage regulating transformer and the first rectifier transformer and the second rectifier transformer, and realize the first voltage regulating transformer is connected only to the first rectifier transformer, or the first voltage regulating transformer is connected only to the second rectifier transformer, or the first voltage regulating transformer is connected to the first rectifier transformer and the second rectifier transformer at the same time.

[0046] In a specific implementation, the connecting member 9 adopts a circular structure; a plurality of contacts are arranged on the connecting member 9, each of which runs through the circular structure, wherein a first contact 1 and a second contact 2 are arranged in the upper and lower directions in the middle, a third contact 3, a fourth contact 4 and a fifth contact 5 are arranged on the right side, and a sixth contact 6, a seventh contact 7 and an eighth contact 8 are arranged on the left side;

[0047] The first contact 1 is located on the outer side of the circular structure as the input end of the connector 9 and the reversing switch, and is connected to the output side of the first voltage regulating transformer; the third and eighth contacts 8 are respectively located on both sides of the first contact 1, and constitute the vacant end of the connector 9, that is, the third and eighth contacts 8 are not electrically connected to other external components, and are in a suspended state when the moving contact is located at this position; the fourth and fifth contacts 5 are connected as the first output end of the connector 9, wherein the fourth contact 4 is close to the third contact 3, and the fifth contact 5 is close to the second contact 2. The fourth and fifth contacts 5 are located on the outer side of the circular structure and are connected by wires as the first output end of the connector 9 and the reversing switch, that is, regardless of the moving contact Whether it contacts the fourth or fifth contact 5, it is connected to the first output terminal; the sixth and seventh contacts 7 are connected to serve as the second output terminal of the connector 9, wherein the seventh contact 7 is close to the eighth contact 8, and the sixth contact 6 is close to the second contact 2. The sixth and seventh contacts 7 are located on the outer side of the circular structure and are connected by wires to serve as the connector 9 and the second output terminal of the reversing switch, that is, no matter whether the moving contact contacts the sixth or seventh contact 7, it is connected to the second output terminal; the first moving contact 11 contacts the third, fourth or fifth contact, and can switch between the first output terminal and the idle terminal; the second moving contact 12 contacts the sixth, seventh or eighth contact, and can switch between the second output terminal and the idle terminal.

[0048] Furthermore, the switching member includes a rotating shaft 10, which is a circular shaft; the rotating shaft 10 is arranged at the center of the connecting member 9 and is electrically connected to the first contact 1; the first moving contact 11 and the second moving contact 12 are electrically connected to the rotating shaft 10. At the same time, the switching member also includes a knob, which is installed on the rotating shaft 10, so as to switch the connection by rotating the rotating shaft 10. Alternatively, a motor device is provided in the switching member and is connected to the rotating shaft 10, so as to perform the connection switching operation by electric drive, which is mainly used in working environments where it is inconvenient for personnel to operate or unsafe.

[0049] In a specific implementation, the contacts are evenly distributed on the connector 9, and based on the circular structure of the connector 9, the first contact 1 and the second contact 2 are symmetrically arranged, the eighth contact 8 and the fifth contact 5 are symmetrically arranged, the third contact 3 and the sixth contact 6 are symmetrically arranged, and the fourth contact 4 and the seventh contact 7 are symmetrically arranged. Further, the first moving contact 11 and the second moving contact 12 are symmetrically arranged with each other; therefore, when the first moving contact 11 contacts the third contact 3, the second moving contact 12 contacts the sixth contact 6; when the first moving contact 11 contacts the fourth contact 4, the second moving contact 12 contacts the seventh contact 7; when the first moving contact 11 contacts the fifth contact 5, the second moving contact 12 contacts the eighth contact 8.

[0050] In a specific implementation, when the first moving contact 11 contacts the first contact 1, the second moving contact 12 contacts the seventh contact 7, so that the first voltage regulating transformer can simultaneously stop supplying power to the first rectifier transformer and the second rectifier transformer. Combined with the above structure, only one reversing switch is needed to realize various combination functions such as supplying power to only one of them, supplying power to both at the same time, or stopping supplying power to both at the same time.

[0051] In the specific implementation, the first voltage-regulating transformer adopts a three-phase positive and negative voltage-regulating auto-coupling voltage-regulating transformer. Furthermore, the first and second rectifier transformers are both three-phase transformers; the input side winding of each rectifier transformer adopts a Yanbian triangle winding connection structure, and the output side winding adopts a star winding connection structure. Therefore, there are also three reversing switches in this embodiment, each phase circuit on the output side of the first voltage-regulating transformer is connected to the input end of a reversing switch, the first output end of the reversing switch is connected to a phase circuit on the input side of the first rectifier transformer, and the second output end of the reversing switch is connected to a phase circuit on the input side of the second rectifier transformer; therefore, the first voltage-regulating transformer adopting a three-phase structure is connected to the first and second rectifier transformers through three reversing switches. Furthermore, in order to facilitate operation and reduce the volume structure, the three reversing switches can be stacked in order to form a three-layer total reversing switch, and the rotating shafts 10 of the three reversing switches are coaxially arranged and rigidly connected. When the rotating shaft 10 is rotated at one end, the moving contacts of the three reversing switches can be rotated at the same time, so that the switching operation of the three-phase circuit is synchronized.

[0052] A reversing switch is connected in series between the voltage regulating transformer and the rectifier transformer to realize the free selection of operation and shutdown switching of the two rectifier transformers. The two rectifier transformers can realize four working modes of "the first rectifier transformer and the second rectifier transformer are running at the same time, the first rectifier transformer is running and the second rectifier transformer is shut down, the second rectifier transformer is running and the first rectifier transformer is shut down, and the first rectifier transformer and the second rectifier transformer are shut down at the same time", so as to achieve the purpose of maximizing user production capacity and energy-saving and economical operation.

[0053] Embodiment 2

[0054] like Figure 2 Another structural schematic diagram of a voltage regulating rectifier transformer control circuit is shown, including:

[0055] A first voltage regulating transformer; further comprising a second voltage regulating transformer; the first and second voltage regulating transformers are used to regulate and transform the input AC power supply before outputting it;

[0056] A reversing switch; the reversing switch is provided with an input terminal and a first output terminal and a second output terminal; the reversing switch has the function of adjusting the connection state between its own input terminal and the first output terminal and the second output terminal;

[0057] A first rectifier transformer and a second rectifier transformer; the output side of each rectifier transformer is provided with a plurality of output windings to provide rectifier power to a plurality of rectifier cabinets of the electrolysis production line;

[0058] The input end of the reversing switch is connected to an external power supply, and the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second voltage regulating transformers; the output side of the first voltage regulating transformer is connected to the input side of the first rectifier transformer; the output side of the second voltage regulating transformer is connected to the input side of the second rectifier transformer; the reversing switch can be used to adjust the state of the external power supply to the two voltage regulating transformers and the rectifier transformer.

[0059] By using a rectifier transformer to carry multiple rectifier cabinets and supply power to multiple loads, that is, a rectifier transformer outputs several groups of voltages to supply power to several rectifier cabinets, the primary equipment investment cost can be reduced. Furthermore, the present application does not require major changes to the existing whole line structure. It only needs to add a reversing switch in front of the first and second voltage regulating transformers, so that only the corresponding single voltage regulating rectifier transformer branch can be stopped during maintenance, which can increase the control flexibility inside the voltage regulating rectifier transformer and reduce the impact of maintenance work on production capacity. Compared with only using the knife switch on the DC bus of the rectifier cabinet to shut down one set of electrolysis devices and operate another set of electrolysis devices, but the rectifier transformer corresponding to the shutdown device is still in a no-load operation state, which increases the power loss, and the operation is not energy-saving and economical. The present application scheme can achieve the purpose of maximizing user production capacity and energy-saving and economical operation.

[0060] In a specific implementation, the reversing switch includes:

[0061] Connecting member 9; the connecting member 9 is provided with an input end, a first output end, a second output end and a vacant end which are insulated from each other; the input end of the connecting member 9 serves as the input end of the reversing switch; the first output end and the second output end of the connecting member 9 serve as the first output end and the second output end of the reversing switch respectively;

[0062] Commutator; the commutator is electrically connected to the input end; the commutator is provided with a first moving contact 11 and a second moving contact 12; the first moving contact 11 switches between the first output end and the idle end of the connector 9; the second moving contact 12 switches between the second output end and the idle end of the connector 9. By switching the two moving contacts, the input end can be connected only to the first output end, or the input end is connected only to the second output end, or the input end is connected to the first output end and the second output end at the same time, so as to meet the connection and commutation requirements of the first voltage regulating transformer and the first rectifier transformer and the second rectifier transformer, and realize the first voltage regulating transformer is connected only to the first rectifier transformer, or the first voltage regulating transformer is connected only to the second rectifier transformer, or the first voltage regulating transformer is connected to the first rectifier transformer and the second rectifier transformer at the same time.

[0063] In a specific implementation, the connecting member 9 adopts a circular structure; a plurality of contacts are arranged on the connecting member 9, each of which runs through the circular structure, wherein a first contact 1 and a second contact 2 are arranged in the upper and lower directions in the middle, a third contact 3, a fourth contact 4 and a fifth contact 5 are arranged on the right side, and a sixth contact 6, a seventh contact 7 and an eighth contact 8 are arranged on the left side;

[0064] The first contact 1 is located on the outer side of the circular structure as the input end of the connector 9 and the reversing switch, and is connected to the output side of the first voltage regulating transformer; the third and eighth contacts 8 are respectively located on both sides of the first contact 1, and constitute the vacant end of the connector 9, that is, the third and eighth contacts 8 are not electrically connected to other external components, and are in a suspended state when the moving contact is located at this position; the fourth and fifth contacts 5 are connected as the first output end of the connector 9, wherein the fourth contact 4 is close to the third contact 3, and the fifth contact 5 is close to the second contact 2. The fourth and fifth contacts 5 are located on the outer side of the circular structure and are connected by wires as the first output end of the connector 9 and the reversing switch, that is, regardless of the moving contact Whether it contacts the fourth or fifth contact 5, it is connected to the first output terminal; the sixth and seventh contacts 7 are connected to serve as the second output terminal of the connector 9, wherein the seventh contact 7 is close to the eighth contact 8, and the sixth contact 6 is close to the second contact 2. The sixth and seventh contacts 7 are located on the outer side of the circular structure and are connected by wires to serve as the connector 9 and the second output terminal of the reversing switch, that is, no matter whether the moving contact contacts the sixth or seventh contact 7, it is connected to the second output terminal; the first moving contact 11 contacts the third, fourth or fifth contact, and can switch between the first output terminal and the idle terminal; the second moving contact 12 contacts the sixth, seventh or eighth contact, and can switch between the second output terminal and the idle terminal.

[0065] Furthermore, the switching member includes a rotating shaft 10, which is a circular shaft; the rotating shaft 10 is arranged at the center of the connecting member 9 and is electrically connected to the first contact 1; the first moving contact 11 and the second moving contact 12 are electrically connected to the rotating shaft 10. At the same time, the switching member also includes a knob, which is installed on the rotating shaft 10, so as to switch the connection by rotating the rotating shaft 10. Alternatively, a motor device is provided in the switching member and is connected to the rotating shaft 10, so as to perform the connection switching operation by electric drive, which is mainly used in working environments where it is inconvenient for personnel to operate or unsafe.

[0066] In a specific implementation, the contacts are evenly distributed on the connector 9, and based on the circular structure of the connector 9, the first contact 1 and the second contact 2 are symmetrically arranged, the eighth contact 8 and the fifth contact 5 are symmetrically arranged, the third contact 3 and the sixth contact 6 are symmetrically arranged, and the fourth contact 4 and the seventh contact 7 are symmetrically arranged. Further, the first moving contact 11 and the second moving contact 12 are symmetrically arranged with each other; therefore, when the first moving contact 11 contacts the third contact 3, the second moving contact 12 contacts the sixth contact 6; when the first moving contact 11 contacts the fourth contact 4, the second moving contact 12 contacts the seventh contact 7; when the first moving contact 11 contacts the fifth contact 5, the second moving contact 12 contacts the eighth contact 8.

[0067] In a specific implementation, when the first moving contact 11 contacts the first contact 1, the second moving contact 12 contacts the seventh contact 7, so that the first voltage regulating transformer can simultaneously stop supplying power to the first rectifier transformer and the second rectifier transformer. Combined with the above structure, only one reversing switch is needed to realize various combination functions such as supplying power to only one of them, supplying power to both at the same time, or stopping supplying power to both at the same time.

[0068] In a specific implementation, the first and second voltage-regulating transformers are three-phase positive and negative voltage-regulating auto-coupling voltage-regulating transformers, wherein each phase circuit is connected to a reversing switch, because three reversing switches are required for reversing operation of the voltage-regulating transformer with a three-phase structure, and an external power supply is used to supply power to one of the voltage-regulating transformers or both voltage-regulating transformers at the same time, or to not supply power to both voltage-regulating transformers at the same time. Furthermore, in order to facilitate operation and reduce the volume structure, the three reversing switches can be stacked in sequence to form a three-layer total reversing switch, and the rotating shafts 10 of the three reversing switches are coaxially arranged and rigidly connected. When the rotating shaft 10 is rotated at one end, the moving contacts of the three reversing switches can be rotated at the same time, so that the switching operation of the three-phase circuit is synchronized.

[0069] In a specific implementation, the first and second rectifier transformers are both three-phase transformers; the input side winding of each rectifier transformer adopts a Yanbian triangle winding connection structure, and the output side has two output windings, each of which adopts a star winding connection structure.

[0070] By connecting a reversing switch in series between the voltage regulating transformer and the external power supply, the operation and shutdown of the two groups of voltage regulating transformers and rectifier transformers can be freely and independently selected, thereby achieving the purpose of maximizing user production capacity and energy-saving and economical operation.

[0071] Embodiment 3

[0072] A voltage regulating rectifier transformer comprises the voltage regulating rectifier transformer control circuit described in the above two embodiments.

[0073] The present application provides a voltage-regulating rectifier transformer control circuit, comprising: a first voltage-regulating transformer; a reversing switch; the reversing switch is provided with an input end and a first output end and a second output end; a first rectifier transformer and a second rectifier transformer; the output side of each rectifier transformer is provided with a plurality of output windings to provide rectifier power to a plurality of rectifier cabinets of an electrolysis production line; the input side of the first voltage-regulating transformer is connected to an external power supply, and the output side is connected to the input end of the reversing switch; the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second rectifier transformers to adjust the state of the first voltage-regulating transformer supplying power to the two rectifier transformers; or further comprising a second voltage-regulating transformer, the input end of the reversing switch is connected to the external power supply, the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second voltage-regulating transformers, the output side of the first voltage-regulating transformer is connected to the input side of the first rectifier transformer, and the output side of the second voltage-regulating transformer is connected to the input side of the second rectifier transformer to adjust the state of the external power supply supplying power to the two voltage-regulating transformers and the rectifier transformer. Through a rectifier transformer with multiple rectifier cabinets, powering multiple loads, that is, a rectifier transformer outputs several groups of voltages to power several rectifier cabinets, and at the same time drives two rectifier transformers through a voltage regulating transformer. Through the circuit structure of one belt multiple layers, not only can the primary equipment investment cost be reduced, but also the energy consumption on the equipment can be reduced by reducing the number of equipment. Furthermore, this application does not need to make major changes to the existing whole line structure. It only needs to add a reversing switch, so that only the corresponding single rectifier transformer can be stopped during maintenance, which can increase the control flexibility inside the voltage regulating rectifier transformer and reduce the impact of maintenance work on production capacity. Compared with only realizing the shutdown of one set of electrolysis devices and the operation of one set of electrolysis devices through the knife switch on the DC bus of the rectifier cabinet, but the rectifier transformer corresponding to the shut down device is still in a no-load operation state, which increases the power loss, and the operation is not energy-saving and uneconomical. The present application scheme can achieve the purpose of maximizing user production capacity and energy-saving and economical operation.

[0074] Those of ordinary skill in the art will appreciate that the units of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition of each example has been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0075] In the embodiments provided by the present invention, it should be understood that the division of units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units can be combined into one unit, one unit can be split into multiple units, or some features can be ignored, etc.

[0076] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0077] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the utility model can be essentially or partly embodied in the form of a software product that contributes to the prior art, or all or part of the technical solution. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the utility model. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-0nlyMemory), random access memory (RAM, RandomAccessMemory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A voltage regulating rectifier transformer control circuit, characterized in that: include: The first voltage regulating transformer; Reversing switch; The reversing switch is provided with an input end and a first output end and a second output end; A first rectifier transformer and a second rectifier transformer; the output side of each rectifier transformer is provided with a plurality of output windings to provide rectifier power to a plurality of rectifier cabinets of the electrolysis production line; The input side of the first voltage regulating transformer is connected to an external power supply, and the output side is connected to the input end of the reversing switch; the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second rectifier transformers to adjust the state of the first voltage regulating transformer supplying power to the two rectifier transformers; or It also includes a second voltage-regulating transformer, the input end of the reversing switch is connected to the external power supply, the first output end and the second output end of the reversing switch are respectively connected to the input sides of the first and second voltage-regulating transformers, the output side of the first voltage-regulating transformer is connected to the input side of the first rectifier transformer, and the output side of the second voltage-regulating transformer is connected to the input side of the second rectifier transformer, so as to adjust the state of the external power supply supplying power to the two voltage-regulating transformers and the rectifier transformer.

2. The voltage regulating rectifier transformer control circuit according to claim 1, characterized in that: The reversing switch comprises: A connecting member; the connecting member is provided with an input end, a first output end, a second output end and a vacant end which are insulated from each other; the input end of the connecting member serves as the input end of the reversing switch; the first output end and the second output end of the connecting member serve as the first output end and the second output end of the reversing switch respectively; A switching member; the switching member is electrically connected to the input end; a first moving contact and a second moving contact are provided on the switching member; the first moving contact switches between the first output end and the idle end of the connecting member; and the second moving contact switches between the second output end and the idle end of the connecting member.

3. The voltage regulating rectifier transformer control circuit according to claim 2, characterized in that: The connecting member adopts a circular structure; a plurality of contacts are arranged on the connecting member, wherein the first contact and the second contact are arranged in the upper and lower directions in the middle, the third contact, the fourth contact and the fifth contact are arranged on the right side, and the sixth contact, the seventh contact and the eighth contact are arranged on the left side; The first contact serves as the input end of the connector; the third and eighth contacts are respectively located on both sides of the first contact and constitute the idle end of the connector; the fourth and fifth contacts serve as the first output end of the connector after being connected; the sixth and seventh contacts serve as the second output end of the connector after being connected; the first moving contact contacts the third, fourth or fifth contact; and the second moving contact contacts the sixth, seventh or eighth contact.

4. The voltage regulating rectifier transformer control circuit according to claim 3, characterized in that: The switching member includes a rotating shaft; the rotating shaft is arranged at the center of the connecting member and is electrically connected to the first contact; the first moving contact and the second moving contact are electrically connected to the rotating shaft.

5. The voltage regulating rectifier transformer control circuit according to claim 4, characterized in that: The contact points are evenly distributed on the connecting member.

6. The voltage regulating rectifier transformer control circuit according to claim 5, characterized in that: The first moving contact and the second moving contact are symmetrically arranged with each other; when the first moving contact contacts the third contact, the second moving contact contacts the sixth contact; when the first moving contact contacts the fourth contact, the second moving contact contacts the seventh contact; when the first moving contact contacts the fifth contact, the second moving contact contacts the eighth contact.

7. The voltage regulating rectifier transformer control circuit according to claim 5, characterized in that: When the first moving contact contacts the first contact point, the second moving contact contacts the seventh contact point.

8. The voltage regulating rectifier transformer control circuit according to claim 1, characterized in that: The voltage regulating transformer adopts a three-phase positive and negative voltage regulating auto-coupling voltage regulating transformer.

9. The voltage regulating rectifier transformer control circuit according to claim 1, characterized in that: The first and second rectifier transformers are both three-phase transformers; the input side winding of each rectifier transformer adopts a Yanbian triangle winding connection structure, and the output side winding adopts a star winding connection structure.

10. A voltage regulating rectifier transformer, characterized in that: It comprises the voltage regulating rectifier transformer control circuit as described in any one of claims 1 to 9.

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