WO2022099934A1 - High voltage direct current relay having auxiliary contact - Google Patents

High voltage direct current relay having auxiliary contact Download PDF

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Publication number
WO2022099934A1
WO2022099934A1 PCT/CN2021/073459 CN2021073459W WO2022099934A1 WO 2022099934 A1 WO2022099934 A1 WO 2022099934A1 CN 2021073459 W CN2021073459 W CN 2021073459W WO 2022099934 A1 WO2022099934 A1 WO 2022099934A1
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Prior art keywords
contact
lead
auxiliary
housing
push rod
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PCT/CN2021/073459
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French (fr)
Chinese (zh)
Inventor
周康平
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东莞市中汇瑞德电子股份有限公司
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Publication of WO2022099934A1 publication Critical patent/WO2022099934A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement

Definitions

  • the invention relates to the technical field of relays, in particular to a high-voltage DC relay with reliable auxiliary contacts.
  • a relay is an electrical control device that makes a predetermined step change in the controlled quantity in the electrical output circuit when the change of the input quantity (excitation quantity) reaches the specified requirements. loop) and the controlled system (also known as the output loop), which play the roles of automatic adjustment, safety protection and conversion circuit in the circuit.
  • high-voltage DC relays are widely used in high-voltage DC loads such as vehicles, photovoltaics and charging piles.
  • auxiliary contacts it is often necessary to set auxiliary contacts to monitor the status of the main contacts and perform low-voltage Linkage control to improve the safety and reliability of electrical equipment.
  • the relays due to the relatively high load voltage of high-voltage DC relays in the fields of new energy vehicles, photovoltaics, industrial control, etc., based on factors such as safety and reliability, the relays often use ceramic sealing structures.
  • the setting of ceramic sealing structures improves the auxiliary contact.
  • the difficulty of installation reduces the performance of the relay.
  • the Chinese invention patent with the application number CN201910258948.X discloses an auxiliary contact structure and a high-voltage DC relay with auxiliary contacts.
  • the high-voltage DC relay adds a set of normally open auxiliary contacts on the top of the ceramic cavity.
  • the auxiliary contact form of this structure is single, only a normally open structure, which is difficult to meet the relay's demand for normally closed auxiliary contacts; the auxiliary contacts are large in size, usually only in the ceramic cavity. One set is set on the top. When multiple sets of auxiliary contacts need to be set, the structure of the relay increases in size, the structure is complex, the cost increases and the reliability decreases simultaneously, which is not conducive to improving the market competitiveness of the product.
  • a high-voltage DC relay with auxiliary contacts includes:
  • a casing the top of the casing is respectively provided with an incoming static contact for accessing current by an external power supply device, and an outgoing static contact for transmitting current to external electrical equipment, and the bottom of the casing is provided with There are magnetic blocks;
  • the push rod assembly includes an insulating plate accommodated in the inner cavity of the housing and abutting with the magnetic conductive block, a push rod fixedly connected with the insulating plate, and a movable contact elastically connected with the push rod, the The movable contact is accommodated in the inner cavity of the casing and can move relative to the inner wall of the casing along the height direction of the casing;
  • the top of the sealing tube is connected with the bottom of the magnetic conductive block and covers the push rod, and the sealing tube accommodates a moving iron core for pushing the push rod to move;
  • An auxiliary contact assembly comprising an auxiliary moving reed that is coaxially fixed on the insulating plate and is insulated from the moving contact, and at least one set of lead-out rods penetrating the side wall of the housing, the auxiliary moving The two sides of the reed are respectively provided with an auxiliary movable contact.
  • One side wall of the casing is matched with one of the auxiliary movable contacts, and the other lead-out rod in each group of the lead-out rods correspondingly passes through the opposite side wall of the casing and is connected with the other one of the auxiliary movable contacts.
  • the other two lead-out rods penetrate through the opposite side walls of the casing and are arranged along the height direction of the casing to form a limit portion for limiting the movement range of another auxiliary movable contact on the auxiliary movable spring;
  • the push rod pushes the moving contact to move under the action of the moving iron core to turn on and off the incoming static contact and the outgoing static contact, and drives the auxiliary moving reed to contact or leave the
  • the lead-out rod is described to form a make loop or open loop.
  • the distance from the lead-out rod to the bottom of the sealing tube is smaller than the distance from the auxiliary movable contact to the bottom of the sealing tube.
  • the distance from the lead-out rod to the bottom of the sealing tube is greater than the distance from the auxiliary movable contact to the bottom of the sealing tube.
  • the push rod assembly further includes a fixing frame and a spring stored in the fixing frame, the push rod passes through the bottom of the fixing frame, and one end of the spring is connected to the bottom of the fixing frame. The bottom is abutted, and the other end of the spring is in contact with the movable contact, which provides elastic force for the action of the movable contact.
  • the auxiliary moving reed is in a U-shaped structure, and includes a mounting plate and lugs arranged on two sides of the mounting plate and extending toward the top of the casing. Bend away from the middle of the mounting plate to form an auxiliary movable contact.
  • the bottom of the fixing frame is located at the top or bottom of the mounting plate, and an insulating medium is provided between the fixing frame and the mounting plate.
  • the mounting plate has an annular structure, the mounting plate is sleeved on the bottom of the fixing frame, and an insulating medium is provided between the mounting plate and the bottom of the fixing frame.
  • the insulating plate is made of plastic.
  • the housing includes a ceramic cover and a transition block connected to the opening of the ceramic cover by high temperature brazing, and the magnetic conductive block is mounted on the bottom of the outer surface of the transition block.
  • the contact portion of the auxiliary movable contact and the lead-out rod is a pair of contact pieces that cooperate with each other.
  • the incoming line static contact and the outgoing line static contact are arranged on the top of the casing, and a plurality of lead-out rods are arranged on the two opposite inner sides of the casing.
  • the auxiliary movable reed is matched with the push rod, so that the push rod can adjust the on-off relationship between the auxiliary movable reed and the lead-out rod while controlling the action of the moving contact, so that the operator can monitor the connection with the lead-out rod.
  • the equipment judges the connection of the incoming static contact and the outgoing static contact, that is, the working state of the relay.
  • auxiliary moving reed Since the auxiliary moving reed is insulated from the moving contact, it isolates the high and low voltage loads and increases the main contact. Distance from auxiliary contact assembly. By arranging the main contact and auxiliary contact components on the top of the casing and the side wall of the casing, the creepage distance and the air distance are increased, the isolation effect of high and low loads is improved, and the main contact is prevented from working.
  • the impact or damage of the generated arc on the auxiliary contact components improves the safety and reliability of the relay and prolongs the service life of the relay;
  • the number of auxiliary contacts and the matching method can be selected according to the needs of the user to meet the needs of use; in addition, the auxiliary contact components are arranged on the side wall of the housing, occupying a small area, and will not
  • the volume of the product is increased, the adaptability of the relay size to general electrical equipment is improved, and the structure is simple, which is conducive to enhancing the market competitiveness of the product.
  • FIG. 1 is a schematic structural diagram of a high-voltage DC relay in an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional structural diagram of the high-voltage DC relay in the embodiment shown in FIG. 1;
  • FIG. 3 is a schematic diagram of an explosion structure of the high-voltage DC relay in the embodiment shown in FIG. 1;
  • FIG. 4 is a schematic structural diagram of an auxiliary moving reed in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of the cooperation between the auxiliary movable spring and the fixed frame in the embodiment shown in FIG. 4;
  • FIG. 6 is a schematic structural diagram of an auxiliary moving reed in another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of the cooperation between the auxiliary moving spring and the fixing frame in the embodiment shown in FIG. 6 .
  • the present invention provides a high-voltage DC relay 10 with reliable auxiliary contacts isolated from the main circuit.
  • the high-voltage DC relay 10 includes an incoming line static contact 200 and The casing 100 with the outgoing static contact 300 and the bottom of which is provided with a magnetic conductive block 400;
  • a push rod 520 that is elastically connected to the movable contact 510 and used to push the movable contact 510 to move, and a push rod assembly 500 composed of an insulating plate 530 accommodated in the inner cavity of the housing 100 and abutting with the magnetic conductive block 400; the top and the magnetic conductive block
  • the bottom of 400 is connected to and covers the push rod 520, the inner cavity accommodates the sealing tube 600 of the moving iron core 700 used to push the push rod 520 to move; and the auxiliary contact assembly 800, the auxiliary contact assembly 800 includes a coaxial fixed arrangement on the insulating plate
  • the auxiliary movable reed 810 is provided with an auxiliary movable contact 811 on each side.
  • the group of lead-out rods 820 includes m lead-out rods 820, and m is 2 or 3.
  • m 2 or 3
  • one of the lead-out rods 820 in each group of lead-out rods 820 penetrates a side wall of the housing 100 and corresponds to an auxiliary movable contact 811 is matched, and the other lead-out rod 820 in each group of lead-out rods 820 passes through the opposite side wall of the casing 100 and cooperates with another auxiliary movable contact 811, that is, it can be understood that any two on the casing 100
  • the limiting portion can be understood as one of the two opposite side walls on the housing 100 is provided with one lead-out rod 820, and the other side wall is provided with two lead-out rods 820; the push rod 520 is moving Under the action of the iron core 700, the movable contact 510 is pushed to move to turn on and off the incoming static contact 200 and the outgoing static contact 300, and drives the auxiliary moving reed 810 to contact or leave the lead-out rod 820 to form a connection loop or disconnection loop.
  • the auxiliary contact assembly 800 includes at least one set of switching auxiliary contacts.
  • the height direction of the casing 100 is the direction from the top of the casing 100 to the bottom of the casing 100 , and other embodiments may refer to this explanation.
  • the housing 100 is used to isolate the arc generated when the incoming static contact 200 and the outgoing static contact 300 are conducting through the moving contact 510 from the external environment, so as to improve the safety of the relay.
  • the housing 100 includes a ceramic cover 110 and a transition block 120 connected to the opening of the ceramic cover 110 by high temperature brazing.
  • the magnetic conductive block 400 is mounted on the bottom of the outer surface of the transition block 120 .
  • the ceramic cover 110 is used to block the metal spatter generated by the arc from burning the inner surface of the case 100 , so as to further improve the safety of the relay.
  • the magnetic conductive block 400 is made of ferromagnetic material, and is used to isolate the housing 100 and the sealing tube 600 to prevent the arc generated during the on-off process of the incoming static contact 200 and the outgoing static contact 300 from affecting the work of the moving iron core 700 . In order to improve the reliability of relay operation.
  • the incoming static contact 200 is used for receiving current from the external power supply device, and the outgoing static contact 300 is used to transmit current to the external electrical equipment, and the two together serve as the main contact of the high-voltage DC relay 10 in this embodiment, which can be regarded as The wire that connects the relay with the load circuit and the external power supply to realize the connection or disconnection of the circuit.
  • the incoming static contact 200 and the outgoing static contact 300 are respectively connected to the ceramic cover 110 of the housing 100 by high temperature brazing, so as to improve the stability of the relay structure and prevent the incoming static contacts 200 and the outgoing wires from being damaged by When the static contact 300 is shaken by an external force, the incoming static contact 200 and the outgoing static contact 300 are in poor contact with the moving contact 510 respectively.
  • the ceramic housing 110, the outgoing static contacts 300 and the ceramic housing 110 improve the sealing performance of the housing 100, which can effectively avoid the problem of gas leakage in the housing 100 during use of the relay, thereby ensuring the reliability of the relay operation. .
  • the insulating plate 530 is used to install the auxiliary moving reed 810 on the push rod 520 , and to achieve insulation isolation between the auxiliary moving reed 810 and the push rod 520 .
  • the insulating plate 530 is made of plastic, for example, the insulating plate 530 can be made of materials such as high temperature resistant nylon PA6T and PA10T.
  • the push rod assembly 500 further includes a fixing frame 540 and a spring 550 accommodated in the fixing frame 540 , the push rod 520 penetrates the bottom of the fixing frame 540 , and one end of the spring 550 abuts against the bottom of the fixing frame 540 , the other end of the spring 550 is in contact with the movable contact 510 to provide elastic force for the action of the movable contact 510 .
  • the insulating plate 530 , the push rod 520 , the fixing frame 540 , the auxiliary moving spring 810 and other components may be integrally injected into one body by injection molding, so as to improve the structural stability of the push rod assembly 500 .
  • the auxiliary moving reed 810 is used to contact or leave the extraction rod 820 under the drive of the push rod 520, so as to connect or disconnect the monitoring equipment connected with the extraction rod 820, so that the operator can detect the working state or parameters of the equipment by Judge the relay's on-end condition.
  • insulation isolation is performed between the auxiliary moving reed 810 and the moving contact 510 , and the high-voltage terminal formed by the incoming static contact 200 and the outgoing static contact 300 can be connected to the auxiliary contact assembly 800
  • the low-voltage end formed at the junction is separated to prevent the arc generated when the moving contact 510 is connected with the incoming static contact 200 and the outgoing static contact 300 from moving to the auxiliary contact assembly 800, so as to improve the safety of the relay and ensure the safety of the relay.
  • the reliability of the condition monitoring of the auxiliary contact assembly 800 is performed between the auxiliary moving reed 810 and the moving contact 510 , and the high-voltage terminal formed by the incoming static contact 200 and the outgoing static contact 300 can be connected to the auxiliary contact assembly 800
  • the low-voltage end formed at the junction is separated to prevent the arc generated when the moving contact 510 is connected with the incoming static contact 200 and the outgoing static contact 300 from moving to the auxiliary contact assembly 800, so as to improve the safety of the relay and
  • the auxiliary moving spring 810 has a U-shaped structure, including a mounting plate 812 and two sides of the mounting plate 812 and extending toward the top of the housing 100 .
  • the ear plate 813 is bent away from the middle of the mounting plate 812 to form the auxiliary movable contact 811 .
  • the bottom of the fixing frame 540 is located at the top or bottom of the mounting plate 812 , and an insulating medium is provided between the fixing frame 540 and the mounting plate 812 to realize the insulating isolation between the fixing frame 540 and the auxiliary moving spring 810 , That is, the insulation isolation between the auxiliary moving reed 810 and the moving contact 510 is achieved.
  • the mounting plate 812 has a ring structure.
  • the inner surface of the mounting plate 812 is adapted to the shape of the outer surface of the fixing frame 540. If it is a square ring structure, the mounting plate 812 is sleeved.
  • the insulating medium connects the push rod 520, the auxiliary moving spring 810 and the fixing frame 540 through integral injection molding, thereby improving the The structure of the push rod assembly 500 is stable, and at the same time, the insulating isolation between the fixing frame 540 and the auxiliary movable spring 810 is realized, that is, the insulating isolation between the auxiliary movable spring 810 and the movable contact 510 is realized.
  • the moving iron core 700 has no force on the push rod 520 when it is not excited, and the push rod 520 drives the auxiliary moving reed 810 to move in a direction close to the bottom of the housing 100 in a natural state, and is respectively connected with the two lead-out rods 820, and The moving contact 510 is disconnected from the main contact, so that the current of the power supply device is connected to the external electrical equipment or control equipment. In this way, the external electrical equipment or control equipment works normally or detects a non-zero electrical signal, so as to determine the main power of the relay.
  • the contact is in an off state; on the contrary, when the movable iron core 700 is excited and pushes the push rod 520 to move, the push rod 520 drives the movable contact 510 to connect the incoming line static contact 200 and the outgoing line static contact 300, and makes The auxiliary moving reed 810 leaves the lead-out rod 820.
  • the external electrical equipment or control equipment stops or detects that the electrical signal suddenly changes to zero, it can be judged that the relay is in an on state.
  • the auxiliary contact assembly 800 is a normally open structure, that is, when the moving iron core 700 is excited, the auxiliary moving contact 811 is connected with the lead-out rod 820.
  • the monitoring of the relay Logic inversion that is, the relay can be judged to be on when the electrical signal is detected by the external electrical equipment.
  • the lead-out rods 820 can be arranged on both the wide side walls and the two narrow side walls. on the wall.
  • the auxiliary contact unit composed of a pair of lead-out rods 820 and auxiliary moving reeds 810 can be either a normally open structure or a normally closed structure, that is, the auxiliary moving The reed 810 is normally open or normally closed with the lead-out rod 820 .
  • the combination of the auxiliary contact assemblies 800 can be combined according to the use scene of the relay.
  • the auxiliary contact assembly 800 includes two sets of auxiliary contact units, it can be two sets of normally open auxiliary contact units. Contact units, two sets of normally closed auxiliary contact units, two sets of conversion type auxiliary contact units, and any combination of the three types of auxiliary contact units will not be repeated here.
  • the contact portion of the auxiliary movable contact 811 and the lead-out rod 820 is a pair of contact pieces that cooperate with each other.
  • the contact part of the auxiliary moving reed 810 with the lead-out rod 820 is a straight-piece structure, and the end of the lead-out rod 820 is a ball head;
  • another contact is connected to the end of the lead-out rod 820 to realize the cooperation between the auxiliary movable spring 810 and the lead-out rod 820 .
  • the connection between the auxiliary movable contact 811 and the lead-out rod 820 may also adopt other matching forms, which are easy to connect and disconnect the auxiliary movable contact 811 and the lead-out rod 820 , which will not be repeated here.
  • the incoming static contact 200 and the outgoing static contact 300 are arranged on the top of the housing 100, and a plurality of lead-out rods 820 are arranged on the housing 100 on the two opposite inner side walls, and cooperate with the auxiliary movable reed 810 and the push rod 520, so that the push rod 520 can adjust the on-off relationship between the auxiliary movable reed 810 and the lead-out rod 820 while controlling the action of the movable contact 510.
  • the operator can judge the connection between the incoming static contact 200 and the outgoing static contact 300 according to the monitoring equipment connected to the lead-out rod 820 , that is, to judge the working state of the relay, because the auxiliary moving reed 810 is insulated from the moving contact 510 Isolation, that is, isolating high and low voltage loads, and increasing the distance between the main contact and the auxiliary contact assembly 800 .
  • the main contact and the auxiliary contact assembly 800 By arranging the main contact and the auxiliary contact assembly 800 on the top of the housing 100 and the side wall of the housing 100 respectively, the creepage distance and the air distance are increased, the isolation effect of high and low loads is improved, and the main contact is avoided.
  • the influence or damage to the auxiliary contact assembly 800 caused by the arc generated during the head work improves the safety and reliability of the relay and prolongs the service life of the relay;
  • the positional relationship of the group lead-out rods 820 is set, and the number of auxiliary contacts and the matching method can be selected according to the needs of the user to meet the needs of use;
  • the occupied area is small, and the volume of the product is not increased, which improves the adaptability of the relay size to general electrical equipment, and its simple structure is conducive to improving the market competitiveness of the product.

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Abstract

A high voltage direct current relay having an auxiliary contact (10), comprising a housing (100) provided with an incoming line static contact (200) and an outgoing line static contact (300) at the top part and a magnetic induction block (400) at the bottom part; a push rod assembly (500) composed of an insulating plate (530), a movable contact (510) accommodated in the housing, and a push rod (520); a sealing tube (600) accommodating a movable iron core (700) connected to the push rod; and an auxiliary contact assembly (800), comprising an auxiliary movable reed (810) arranged at the insulating plate and insulated from the movable contact, and at least one set of lead-out rods (820) passing through the side wall of the housing, wherein each set of lead-out rods comprises m lead-out rods, m being 2 or 3; when m =2, the two lead-out rods of each set of lead-out rods are correspondingly arranged on two opposing side walls of the housing; when m=3, one lead-out rod of each set of lead-out rods is arranged on one side wall of the housing, and the other two lead-out rods are arranged on opposing side walls of the housing; during movement, the push rod pushes the movable contact to move, so as to turn the incoming line static contact and the outgoing line static contact on and off, and to drive the auxiliary movable reed to contact or separate from the lead-out rods, thereby forming a closed circuit or an open circuit. The present relay improves the reliability of the auxiliary contact.

Description

一种带有辅助触点的高压直流继电器A high voltage DC relay with auxiliary contacts 技术领域technical field
本发明涉及继电器技术领域，特别是涉及一种带有可靠辅助触点的高压直流继电器。The invention relates to the technical field of relays, in particular to a high-voltage DC relay with reliable auxiliary contacts.
背景技术Background technique
继电器是一种当输入量(激励量)的变化达到规定要求时，在电气输出电路中使被控量发生预定的阶跃变化的一种电控制器件，由互动配合的控制***(又称输入回路)和被控制***(又称输出回路)构成，在电路中起着自动调节、安全保护以及转换电路等作用。随着绿色能源的兴起，高压直流继电器在车载、光伏以及充电桩等高压直流负载中广泛应用，鉴于高压直流负载的上述应用场景，往往需要设置辅助触点来监测主触点的状态并进行低压联动控制，以提升电气设备使用的安全性及可靠性。A relay is an electrical control device that makes a predetermined step change in the controlled quantity in the electrical output circuit when the change of the input quantity (excitation quantity) reaches the specified requirements. loop) and the controlled system (also known as the output loop), which play the roles of automatic adjustment, safety protection and conversion circuit in the circuit. With the rise of green energy, high-voltage DC relays are widely used in high-voltage DC loads such as vehicles, photovoltaics and charging piles. In view of the above application scenarios of high-voltage DC loads, it is often necessary to set auxiliary contacts to monitor the status of the main contacts and perform low-voltage Linkage control to improve the safety and reliability of electrical equipment.
然而，由于新能源汽车以及光伏、工控等领域中的高压直流继电器的负载电压比较高，基于安全性、可靠性等因素考虑，继电器往往采用陶瓷密封结构，陶瓷密封结构的设置提升了辅助触点的安装难度，使得继电器的性能下降。例如，申请号为CN201910258948.X的中国发明专利公开了一种辅助触点结构及带辅助触点的高压直流继电器，该高压直流继电器在陶瓷腔体的顶部增加了一组常开的辅助触点，其结构较为简单，但由于主触点和辅助触点同时分布在陶瓷顶部，高低负载隔离效果差；当主触点开断负载时，电弧容易窜到辅助触点，造成高低负载连通，甚至烧毁辅助触点，存在安全隐患；主触点飞溅的金属颗粒容易污染辅助触点，辅助触点的可靠性无法保证；此结构辅助触点的开关逻辑单一，与主触点同步通断，难以实现相反逻辑下的动作；此结构的辅助触点形式单一，仅为常开型结构，难以满足继电器对常闭型辅助触点的需求；辅助触点尺寸较大，通常只能在陶瓷腔体的顶部设置一组，当需要设置多组辅助触点时，继电器结构体积增大，结构复杂，成本提升且可靠性同步下降，不利于提升产品的市场竞争力。However, due to the relatively high load voltage of high-voltage DC relays in the fields of new energy vehicles, photovoltaics, industrial control, etc., based on factors such as safety and reliability, the relays often use ceramic sealing structures. The setting of ceramic sealing structures improves the auxiliary contact. The difficulty of installation reduces the performance of the relay. For example, the Chinese invention patent with the application number CN201910258948.X discloses an auxiliary contact structure and a high-voltage DC relay with auxiliary contacts. The high-voltage DC relay adds a set of normally open auxiliary contacts on the top of the ceramic cavity. , its structure is relatively simple, but because the main contacts and auxiliary contacts are distributed on the top of the ceramic at the same time, the high and low load isolation effect is poor; when the main contact breaks the load, the arc is easy to escape to the auxiliary contact, causing the high and low loads to be connected, or even burned Auxiliary contacts have potential safety hazards; the metal particles splashed by the main contacts are easy to contaminate the auxiliary contacts, and the reliability of the auxiliary contacts cannot be guaranteed; the switching logic of the auxiliary contacts in this structure is single, and it is difficult to realize the on-off synchronous with the main contacts. Action under the opposite logic; the auxiliary contact form of this structure is single, only a normally open structure, which is difficult to meet the relay's demand for normally closed auxiliary contacts; the auxiliary contacts are large in size, usually only in the ceramic cavity. One set is set on the top. When multiple sets of auxiliary contacts need to be set, the structure of the relay increases in size, the structure is complex, the cost increases and the reliability decreases simultaneously, which is not conducive to improving the market competitiveness of the product.
发明内容SUMMARY OF THE INVENTION
基于此，有必要针对传统高压直流继电器的不足，提供一种带有可靠辅助触点的高压直流继电器。Based on this, it is necessary to provide a high-voltage DC relay with reliable auxiliary contacts for the deficiencies of traditional high-voltage DC relays.
一种带有辅助触点的高压直流继电器，该高压直流继电器包括：A high-voltage DC relay with auxiliary contacts, the high-voltage DC relay includes:
壳体，所述壳体的顶部分别穿设有用于由外部电源装置接入电流的进线静触头，以及用于向外部电气设备传输电流的出线静触头，所述壳体的底部设有导磁块；A casing, the top of the casing is respectively provided with an incoming static contact for accessing current by an external power supply device, and an outgoing static contact for transmitting current to external electrical equipment, and the bottom of the casing is provided with There are magnetic blocks;
推杆组件，包括收容于所述壳体内腔并与所述导磁块抵接的绝缘板、与所述绝缘板固定连接的推杆以及与所述推杆弹性连接的动触头，所述动触头收容于所述壳体的内腔并可沿所述壳体的高度方向相对于所述壳体的内壁移动；The push rod assembly includes an insulating plate accommodated in the inner cavity of the housing and abutting with the magnetic conductive block, a push rod fixedly connected with the insulating plate, and a movable contact elastically connected with the push rod, the The movable contact is accommodated in the inner cavity of the casing and can move relative to the inner wall of the casing along the height direction of the casing;
密封管，所述密封管的顶部与所述导磁块底部连接并罩设所述推杆，所述密封管内收容有动铁芯，用于推动所述推杆动作；a sealing tube, the top of the sealing tube is connected with the bottom of the magnetic conductive block and covers the push rod, and the sealing tube accommodates a moving iron core for pushing the push rod to move;
辅助触点组件，包括同轴固定设置在所述绝缘板上并与所述动触头绝缘隔离的辅助动簧片以及穿设所述壳体侧壁的至少一组引出杆，所述辅助动簧片的两边侧分别设有一辅助动触点，每组所述引出杆包括m根引出杆，m为2或3，当m＝2时，每组所述引出杆中的一个引出杆穿设所述壳体一侧壁并对应与一个所述辅助动触点配合，每组所述引出杆中的另一个引出杆对应穿设所述壳体上的相对侧壁并与另一个所述辅助动触点配合；当m＝3时，每组所述引出杆中的一个引出杆穿设所述壳体的一个侧壁并与一所述辅助动触点配合，每组所述引出杆中的另外两个引出杆穿设所述壳体的相对侧壁且沿所述壳体高度方向布置，形成用于限定所述辅助动簧片上的另一个辅助动触点运动范围的限位部；An auxiliary contact assembly, comprising an auxiliary moving reed that is coaxially fixed on the insulating plate and is insulated from the moving contact, and at least one set of lead-out rods penetrating the side wall of the housing, the auxiliary moving The two sides of the reed are respectively provided with an auxiliary movable contact. Each group of the lead-out rods includes m lead-out rods, where m is 2 or 3. When m=2, one of the lead-out rods in each group is passed through. One side wall of the casing is matched with one of the auxiliary movable contacts, and the other lead-out rod in each group of the lead-out rods correspondingly passes through the opposite side wall of the casing and is connected with the other one of the auxiliary movable contacts. The movable contact is matched; when m=3, one of the lead-out rods in each group passes through a side wall of the housing and cooperates with one of the auxiliary movable contacts. The other two lead-out rods penetrate through the opposite side walls of the casing and are arranged along the height direction of the casing to form a limit portion for limiting the movement range of another auxiliary movable contact on the auxiliary movable spring;
所述推杆在所述动铁芯的作用下推动所述动触头运动以通断所述进线静触头与所述出线静触头，并带动所述辅助动簧片接触或离开所述引出杆，以形成接通回路或断开回路。The push rod pushes the moving contact to move under the action of the moving iron core to turn on and off the incoming static contact and the outgoing static contact, and drives the auxiliary moving reed to contact or leave the The lead-out rod is described to form a make loop or open loop.
在其中一个实施例中，当m＝2时，所述引出杆至所述密封管底部的距离小于所述辅助动触点至所述密封管底部的距离。In one embodiment, when m=2, the distance from the lead-out rod to the bottom of the sealing tube is smaller than the distance from the auxiliary movable contact to the bottom of the sealing tube.
在其中一个实施例中，当m＝2时，所述引出杆至所述密封管底部的距离大 于所述辅助动触点至所述密封管底部的距离。In one embodiment, when m=2, the distance from the lead-out rod to the bottom of the sealing tube is greater than the distance from the auxiliary movable contact to the bottom of the sealing tube.
在其中一个实施例中，所述推杆组件还包括固定架以及收纳于所述固定架的弹簧，所述推杆穿设所述固定架的底部，所述弹簧的一端与所述固定架的底部抵接，所述弹簧的另一端所述动触头抵接，为所述动触头的动作提供弹力。In one embodiment, the push rod assembly further includes a fixing frame and a spring stored in the fixing frame, the push rod passes through the bottom of the fixing frame, and one end of the spring is connected to the bottom of the fixing frame. The bottom is abutted, and the other end of the spring is in contact with the movable contact, which provides elastic force for the action of the movable contact.
在其中一个实施例中，所述辅助动簧片呈U型结构，包括安装板以及设置于所述安装板两个边侧并向靠近所述壳体顶部方向延伸的耳板，所述耳板向远离所述安装板中部方向折弯以形成辅助动触点。In one embodiment, the auxiliary moving reed is in a U-shaped structure, and includes a mounting plate and lugs arranged on two sides of the mounting plate and extending toward the top of the casing. Bend away from the middle of the mounting plate to form an auxiliary movable contact.
在其中一个实施例中，所述固定架的底部位于所述安装板的顶部或底部，且所述固定架与所述安装板之间设有绝缘介质。In one embodiment, the bottom of the fixing frame is located at the top or bottom of the mounting plate, and an insulating medium is provided between the fixing frame and the mounting plate.
在其中一个实施例中，所述安装板呈环形结构，所述安装板套设于所述固定架的底部，所述安装板与所述固定架的底部之间设置有绝缘介质。In one embodiment, the mounting plate has an annular structure, the mounting plate is sleeved on the bottom of the fixing frame, and an insulating medium is provided between the mounting plate and the bottom of the fixing frame.
在其中一个实施例中，所述绝缘板由塑料制成。In one of the embodiments, the insulating plate is made of plastic.
在其中一个实施例中，所述壳体包括陶瓷罩壳以及与所述陶瓷罩壳的开口部位高温钎焊连接的过渡块，所述导磁块安装于所述过渡块的外表面底部。In one embodiment, the housing includes a ceramic cover and a transition block connected to the opening of the ceramic cover by high temperature brazing, and the magnetic conductive block is mounted on the bottom of the outer surface of the transition block.
在其中一个实施例中，所述辅助动触点与所述引出杆的接触部为相互配合的一对触片。In one embodiment, the contact portion of the auxiliary movable contact and the lead-out rod is a pair of contact pieces that cooperate with each other.
实施本发明的带有辅助触点的高压直流继电器，将进线静触头与出线静触头，即主触头设置在壳体的顶部，将多个引出杆设置壳体的两个相对内侧壁上，并将辅助动簧片与推杆配合，使得推杆在控制动触头动作的同时，调节辅助动簧片与引出杆的通断关系，以便于作业人员根据与引出杆连接的监测设备判断进线静触头与出线静触头的连接情况，即判断继电器的工作状态，由于辅助动簧片与动触头绝缘隔离，即对高低压负载进行隔离，且增大了主触头与辅助触点组件之间的距离。通过将主触点与辅助触点组件分别设置在壳体的顶部和壳体的侧壁，增大了爬电距离以及空气距离，提升了高低负载的隔离效果，并避免了主触头工作中产生的电弧对辅助触点组件造成的影响或损坏，提升了继电器使用的安全性及可靠性并延长了继电器的使用寿命；通过设置一组及以上的引出杆，并对每组引出杆的位置关系进行设定，可根据用户的需求对辅助触点的数量及配合方式进行选择，以满足使用需要；此外，辅助触点组件设置在壳 体的侧壁上，占用面积较小，且不会增加产品的体积，提升了继电器尺寸对一般电气设备的适应能力，其结构简单，有利于提升产品的市场竞争力。In the high-voltage DC relay with auxiliary contacts implemented in the present invention, the incoming line static contact and the outgoing line static contact, that is, the main contact, are arranged on the top of the casing, and a plurality of lead-out rods are arranged on the two opposite inner sides of the casing. On the wall, the auxiliary movable reed is matched with the push rod, so that the push rod can adjust the on-off relationship between the auxiliary movable reed and the lead-out rod while controlling the action of the moving contact, so that the operator can monitor the connection with the lead-out rod. The equipment judges the connection of the incoming static contact and the outgoing static contact, that is, the working state of the relay. Since the auxiliary moving reed is insulated from the moving contact, it isolates the high and low voltage loads and increases the main contact. Distance from auxiliary contact assembly. By arranging the main contact and auxiliary contact components on the top of the casing and the side wall of the casing, the creepage distance and the air distance are increased, the isolation effect of high and low loads is improved, and the main contact is prevented from working. The impact or damage of the generated arc on the auxiliary contact components improves the safety and reliability of the relay and prolongs the service life of the relay; The number of auxiliary contacts and the matching method can be selected according to the needs of the user to meet the needs of use; in addition, the auxiliary contact components are arranged on the side wall of the housing, occupying a small area, and will not The volume of the product is increased, the adaptability of the relay size to general electrical equipment is improved, and the structure is simple, which is conducive to enhancing the market competitiveness of the product.
附图说明Description of drawings
图1为本发明的一个实施例中高压直流继电器的结构示意图；1 is a schematic structural diagram of a high-voltage DC relay in an embodiment of the present invention;
图2为图1所示实施例中高压直流继电器的剖面结构示意图；2 is a schematic cross-sectional structural diagram of the high-voltage DC relay in the embodiment shown in FIG. 1;
图3为图1所示实施例中高压直流继电器的***结构示意图；3 is a schematic diagram of an explosion structure of the high-voltage DC relay in the embodiment shown in FIG. 1;
图4为本发明的一个实施例中辅助动簧片的结构示意图；4 is a schematic structural diagram of an auxiliary moving reed in an embodiment of the present invention;
图5为图4所示实施例中辅助动簧片与固定架配合的结构示意图；FIG. 5 is a schematic structural diagram of the cooperation between the auxiliary movable spring and the fixed frame in the embodiment shown in FIG. 4;
图6为本发明的另一个实施例中辅助动簧片的结构示意图；6 is a schematic structural diagram of an auxiliary moving reed in another embodiment of the present invention;
图7为图6所示实施例中辅助动簧片与固定架配合的结构示意图。FIG. 7 is a schematic structural diagram of the cooperation between the auxiliary moving spring and the fixing frame in the embodiment shown in FIG. 6 .
具体实施方式Detailed ways
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本发明。但是本发明能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似改进，因此本发明不受下面公开的具体实施例的限制。In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.
请一并参阅图1至图3，本发明提供了一种带有与主回路隔离的可靠辅助触点的高压直流继电器10，该高压直流继电器10包括顶部穿设有进线静触头200与出线静触头300且底部设有导磁块400的壳体100；由收容于壳体100的内腔并可沿壳体100的高度方向相对于壳体100内壁移动的动触头510、与动触头510弹性连接并用于推动动触头510动作的推杆520以及收容于壳体100内腔并与导磁块400抵接的绝缘板530组成的推杆组件500；顶部与导磁块400底部连接并罩设推杆520、内腔收容有用于推动推杆520动作的动铁芯700的密封管600；以及辅助触点组件800，辅助触点组件800包括同轴固定设置在绝缘板530上并与动触头510绝缘隔离的辅助动簧片810以及穿设壳体100侧壁的至少一组引出杆820，辅助动簧片810的两边侧分别设有一辅助动触点811，每组引出 杆820包括m根引出杆820，m为2或3，当m＝2时，每组引出杆820中的一个引出杆820穿设壳体100一侧壁并对应与一个辅助动触点811配合，每组引出杆820中的另一个引出杆820对应穿设壳体100上的相对侧壁并与另一个辅助动触点811配合，即可以理解为，壳体100上的任意两个相对侧壁上分别设有一个引出杆820；当m＝3时，每组引出杆820中的一个引出杆820穿设壳体100的一个侧壁并与一辅助动触点811配合，每组引出杆820中的另外两个引出杆820穿设壳体100的相对侧壁且沿壳体100高度方向布置，形成用于限定辅助动簧片810上的另一个辅助动触点811运动范围的限位部，即可以理解为，壳体100上任意两个相对侧壁中的一个侧壁上设有一个引出杆820，另一个侧壁上设置有两个引出杆820；推杆520在动铁芯700的作用下推动动触头510运动以通断进线静触头200与出线静触头300，并带动辅助动簧片810接触或离开引出杆820，以形成接通回路或断开回路。可以理解为，当m＝3时，辅助触点组件800包括至少一组转换型辅助触点。需要说明的是，本实施例中壳体100的高度方向是由壳体100的顶部指向壳体100底部的方向，其他实施例中可参照此解释。Please refer to FIG. 1 to FIG. 3 together. The present invention provides a high-voltage DC relay 10 with reliable auxiliary contacts isolated from the main circuit. The high-voltage DC relay 10 includes an incoming line static contact 200 and The casing 100 with the outgoing static contact 300 and the bottom of which is provided with a magnetic conductive block 400; A push rod 520 that is elastically connected to the movable contact 510 and used to push the movable contact 510 to move, and a push rod assembly 500 composed of an insulating plate 530 accommodated in the inner cavity of the housing 100 and abutting with the magnetic conductive block 400; the top and the magnetic conductive block The bottom of 400 is connected to and covers the push rod 520, the inner cavity accommodates the sealing tube 600 of the moving iron core 700 used to push the push rod 520 to move; and the auxiliary contact assembly 800, the auxiliary contact assembly 800 includes a coaxial fixed arrangement on the insulating plate The auxiliary movable reed 810 on the 530 and insulated from the movable contact 510 and at least one set of lead-out rods 820 passing through the side wall of the housing 100. The auxiliary movable reed 810 is provided with an auxiliary movable contact 811 on each side. The group of lead-out rods 820 includes m lead-out rods 820, and m is 2 or 3. When m=2, one of the lead-out rods 820 in each group of lead-out rods 820 penetrates a side wall of the housing 100 and corresponds to an auxiliary movable contact 811 is matched, and the other lead-out rod 820 in each group of lead-out rods 820 passes through the opposite side wall of the casing 100 and cooperates with another auxiliary movable contact 811, that is, it can be understood that any two on the casing 100 A lead-out rod 820 is respectively provided on the opposite side wall; when m=3, one of the lead-out rods 820 in each group of lead-out rods 820 penetrates a side wall of the housing 100 and cooperates with an auxiliary movable contact 811, and each group of lead-out rods 820 The other two of the lead-out rods 820 pass through the opposite side walls of the casing 100 and are arranged along the height direction of the casing 100 to form a movement range for defining the other auxiliary movable contact 811 on the auxiliary movable spring 810. The limiting portion can be understood as one of the two opposite side walls on the housing 100 is provided with one lead-out rod 820, and the other side wall is provided with two lead-out rods 820; the push rod 520 is moving Under the action of the iron core 700, the movable contact 510 is pushed to move to turn on and off the incoming static contact 200 and the outgoing static contact 300, and drives the auxiliary moving reed 810 to contact or leave the lead-out rod 820 to form a connection loop or disconnection loop. It can be understood that when m=3, the auxiliary contact assembly 800 includes at least one set of switching auxiliary contacts. It should be noted that, in this embodiment, the height direction of the casing 100 is the direction from the top of the casing 100 to the bottom of the casing 100 , and other embodiments may refer to this explanation.
壳体100用于将进线静触头200与出线静触头300经由动触头510导通时产生的电弧同外部环境隔离开来，以提高了继电器使用的安全性。一实施例中，壳体100包括陶瓷罩壳110以及与陶瓷罩壳110的开口部位高温钎焊连接的过渡块120，导磁块400安装于过渡块120的外表面底部。陶瓷罩壳110用于阻断电弧产生的金属飞溅物对壳体100内表面的灼烧，以进一步提升继电器使用的安全性。导磁块400由铁磁性材料制成，用于隔离壳体100与密封管600，避免进线静触头200与出线静触头300通断过程中产生的电弧影响动铁芯700的工作，以提升继电器工作的可靠性。The housing 100 is used to isolate the arc generated when the incoming static contact 200 and the outgoing static contact 300 are conducting through the moving contact 510 from the external environment, so as to improve the safety of the relay. In one embodiment, the housing 100 includes a ceramic cover 110 and a transition block 120 connected to the opening of the ceramic cover 110 by high temperature brazing. The magnetic conductive block 400 is mounted on the bottom of the outer surface of the transition block 120 . The ceramic cover 110 is used to block the metal spatter generated by the arc from burning the inner surface of the case 100 , so as to further improve the safety of the relay. The magnetic conductive block 400 is made of ferromagnetic material, and is used to isolate the housing 100 and the sealing tube 600 to prevent the arc generated during the on-off process of the incoming static contact 200 and the outgoing static contact 300 from affecting the work of the moving iron core 700 . In order to improve the reliability of relay operation.
进线静触头200用于由外部电源装置接入电流，出线静触头300用于向外部电气设备传输电流，二者共同作为本实施例的高压直流继电器10的主触头，可以视为将继电器与负载电路及外部电源连通的导线，以实现对电路的接通或分断。一实施例中，进线静触头200及出线静触头300分别与壳体100的陶瓷罩壳110高温钎焊连接，以提升继电器结构的稳定性，防止因进线静触头200 及出线静触头300受外力冲击产生晃动时，造成的进线静触头200及出线静触头300分别与动触头510接触不良问题，此外，采用高温钎焊方式连接进线静触头200与陶瓷罩壳110以及出线静触头300与陶瓷罩壳110，提升了壳体100的密封性，可有效避免继电器使用过程中充入壳体100内的气体泄漏问题，从而保证继电器工作的可靠性。The incoming static contact 200 is used for receiving current from the external power supply device, and the outgoing static contact 300 is used to transmit current to the external electrical equipment, and the two together serve as the main contact of the high-voltage DC relay 10 in this embodiment, which can be regarded as The wire that connects the relay with the load circuit and the external power supply to realize the connection or disconnection of the circuit. In an embodiment, the incoming static contact 200 and the outgoing static contact 300 are respectively connected to the ceramic cover 110 of the housing 100 by high temperature brazing, so as to improve the stability of the relay structure and prevent the incoming static contacts 200 and the outgoing wires from being damaged by When the static contact 300 is shaken by an external force, the incoming static contact 200 and the outgoing static contact 300 are in poor contact with the moving contact 510 respectively. The ceramic housing 110, the outgoing static contacts 300 and the ceramic housing 110 improve the sealing performance of the housing 100, which can effectively avoid the problem of gas leakage in the housing 100 during use of the relay, thereby ensuring the reliability of the relay operation. .
绝缘板530用于将辅助动簧片810安装在推杆520上，并实现辅助动簧片810与推杆520的绝缘隔离。一实施例中，绝缘板530由塑料制成，例如，绝缘板530可以由耐高温尼龙PA6T以及PA10T等材料制成。进一步的，一实施例中，推杆组件500还包括固定架540以及收纳于固定架540的弹簧550，推杆520穿设固定架540的底部，弹簧550的一端与固定架540的底部抵接，弹簧550的另一端与动触头510抵接，为动触头510的动作提供弹力。优选的，可采用注塑成型方式将绝缘板530、推杆520、固定架540以及辅助动簧片810等部件注塑为一体，以提升推杆组件500结构的稳定性。The insulating plate 530 is used to install the auxiliary moving reed 810 on the push rod 520 , and to achieve insulation isolation between the auxiliary moving reed 810 and the push rod 520 . In one embodiment, the insulating plate 530 is made of plastic, for example, the insulating plate 530 can be made of materials such as high temperature resistant nylon PA6T and PA10T. Further, in one embodiment, the push rod assembly 500 further includes a fixing frame 540 and a spring 550 accommodated in the fixing frame 540 , the push rod 520 penetrates the bottom of the fixing frame 540 , and one end of the spring 550 abuts against the bottom of the fixing frame 540 , the other end of the spring 550 is in contact with the movable contact 510 to provide elastic force for the action of the movable contact 510 . Preferably, the insulating plate 530 , the push rod 520 , the fixing frame 540 , the auxiliary moving spring 810 and other components may be integrally injected into one body by injection molding, so as to improve the structural stability of the push rod assembly 500 .
辅助动簧片810用于在推杆520的带动下接触或离开引出杆820，以便于接通或断开与引出杆820连接的监测设备，如此，作业人员可通过检测设备的工作状态或参数判断继电器的通端情况。需要说明的是，本实施例中于辅助动簧片810与动触头510之间进行绝缘隔离，可以将由进线静触头200与出线静触头300形成的高压端同辅助触点组件800处形成的低压端隔开，避免动触头510与进线静触头200和出线静触头300连通时产生的电弧窜动到辅助触点组件800部位，以提升继电器的安全性并保证经由辅助触点组件800进行状态监测的可靠性。The auxiliary moving reed 810 is used to contact or leave the extraction rod 820 under the drive of the push rod 520, so as to connect or disconnect the monitoring equipment connected with the extraction rod 820, so that the operator can detect the working state or parameters of the equipment by Judge the relay's on-end condition. It should be noted that, in this embodiment, insulation isolation is performed between the auxiliary moving reed 810 and the moving contact 510 , and the high-voltage terminal formed by the incoming static contact 200 and the outgoing static contact 300 can be connected to the auxiliary contact assembly 800 The low-voltage end formed at the junction is separated to prevent the arc generated when the moving contact 510 is connected with the incoming static contact 200 and the outgoing static contact 300 from moving to the auxiliary contact assembly 800, so as to improve the safety of the relay and ensure the safety of the relay. The reliability of the condition monitoring of the auxiliary contact assembly 800.
请结合图2、图4与图5，一实施例中，辅助动簧片810呈U型结构，包括安装板812以及设置于安装板812两个边侧并向靠近壳体100顶部方向延伸的耳板813，耳板813向远离安装板812中部方向折弯以形成辅助动触点811。一实施例中，固定架540的底部位于安装板812的顶部或底部，且固定架540与安装板812之间设有绝缘介质，用以实现固定架540与辅助动簧片810的绝缘隔离，亦即实现辅助动簧片810与动触头510的绝缘隔离。Referring to FIGS. 2 , 4 and 5 , in one embodiment, the auxiliary moving spring 810 has a U-shaped structure, including a mounting plate 812 and two sides of the mounting plate 812 and extending toward the top of the housing 100 . The ear plate 813 is bent away from the middle of the mounting plate 812 to form the auxiliary movable contact 811 . In one embodiment, the bottom of the fixing frame 540 is located at the top or bottom of the mounting plate 812 , and an insulating medium is provided between the fixing frame 540 and the mounting plate 812 to realize the insulating isolation between the fixing frame 540 and the auxiliary moving spring 810 , That is, the insulation isolation between the auxiliary moving reed 810 and the moving contact 510 is achieved.
请参阅图6与图7，一实施例中，安装板812呈环形结构，优选的，安装板 812的内表面与固定架540外侧面形状相适应，如为方环结构，安装板812套设于固定架540的底部，且安装板812与固定架540的底部之间设置有绝缘介质，绝缘介质通过一体注塑将推杆520、辅助动簧片810以及固定架540连接为一体，从而提升了推杆组件500结构的稳定性，同时，实现了固定架540与辅助动簧片810的绝缘隔离，亦即实现辅助动簧片810与动触头510的绝缘隔离。Please refer to FIG. 6 and FIG. 7. In one embodiment, the mounting plate 812 has a ring structure. Preferably, the inner surface of the mounting plate 812 is adapted to the shape of the outer surface of the fixing frame 540. If it is a square ring structure, the mounting plate 812 is sleeved. At the bottom of the fixing frame 540, and an insulating medium is arranged between the mounting plate 812 and the bottom of the fixing frame 540, the insulating medium connects the push rod 520, the auxiliary moving spring 810 and the fixing frame 540 through integral injection molding, thereby improving the The structure of the push rod assembly 500 is stable, and at the same time, the insulating isolation between the fixing frame 540 and the auxiliary movable spring 810 is realized, that is, the insulating isolation between the auxiliary movable spring 810 and the movable contact 510 is realized.
引出杆820用于与监测设备电连接，用以将继电器内部的状态信息发送至外部监测设备，以掌握继电器内的状态参数。具体的，当m＝2时，引出杆820与供电装置电性连接，引出杆820与外部电气设备或控制设备连接，若引出杆820至密封管600底部的距离小于辅助动触点811至密封管600底部的距离。即辅助动触点811位于引出杆820与壳体100顶部之间，在此情况下，辅助触点组件800为常闭式结构。动铁芯700在非激励时对推杆520无作用力，推杆520在自然状态下带动辅助动簧片810向靠近壳体100底部的方向移动，并分别与两个引出杆820连接，且动触头510与主触头断开，从而将供电装置的电流接入外部电气设备或控制设备中，如此，外部电气设备或控制设备正常工作或检测到非零电信号，从而判断继电器的主触点处于断开状态；反之，当动铁芯700被激励并推动推杆520运动，进而使得推杆520带动动触头510接通进线静触头200和出线静触头300，并使得辅助动簧片810离开引出杆820，在此情况下，外部电气设备或控制设备停机或监测到电信号突变至零时，即可判断继电器处于接通状态。The lead-out rod 820 is used for electrical connection with the monitoring device, and is used for sending the state information inside the relay to the external monitoring device, so as to grasp the state parameters in the relay. Specifically, when m=2, the lead-out rod 820 is electrically connected to the power supply device, and the lead-out rod 820 is connected to external electrical equipment or control equipment. The distance from the bottom of the tube 600. That is, the auxiliary movable contact 811 is located between the lead-out rod 820 and the top of the housing 100. In this case, the auxiliary contact assembly 800 is a normally closed structure. The moving iron core 700 has no force on the push rod 520 when it is not excited, and the push rod 520 drives the auxiliary moving reed 810 to move in a direction close to the bottom of the housing 100 in a natural state, and is respectively connected with the two lead-out rods 820, and The moving contact 510 is disconnected from the main contact, so that the current of the power supply device is connected to the external electrical equipment or control equipment. In this way, the external electrical equipment or control equipment works normally or detects a non-zero electrical signal, so as to determine the main power of the relay. The contact is in an off state; on the contrary, when the movable iron core 700 is excited and pushes the push rod 520 to move, the push rod 520 drives the movable contact 510 to connect the incoming line static contact 200 and the outgoing line static contact 300, and makes The auxiliary moving reed 810 leaves the lead-out rod 820. In this case, when the external electrical equipment or control equipment stops or detects that the electrical signal suddenly changes to zero, it can be judged that the relay is in an on state.
另一实施例中，当m＝2时，若引出杆820至密封管600底部的距离大于辅助动触点811至密封管600底部的距离，即辅助动触点811位于引出杆820与壳体100底部之间，在此情况下，辅助触点组件800为常开式结构，即在动铁芯700被激励时，辅助动触点811与引出杆820连接，在此情况下，继电器的监测逻辑反转，即在外部电气设备监测到的电信号时即可判断继电器处于接通状态。需要说明的是，当壳体100为长方体结构时，即壳体100包括宽侧壁及窄侧壁时，引出杆820既可以设置在两个宽侧壁上，也可以设置在两个窄侧壁上。In another embodiment, when m=2, if the distance from the extraction rod 820 to the bottom of the sealing tube 600 is greater than the distance from the auxiliary movable contact 811 to the bottom of the sealing tube 600, that is, the auxiliary movable contact 811 is located between the extraction rod 820 and the housing. Between the bottom of 100, in this case, the auxiliary contact assembly 800 is a normally open structure, that is, when the moving iron core 700 is excited, the auxiliary moving contact 811 is connected with the lead-out rod 820. In this case, the monitoring of the relay Logic inversion, that is, the relay can be judged to be on when the electrical signal is detected by the external electrical equipment. It should be noted that, when the casing 100 has a rectangular parallelepiped structure, that is, when the casing 100 includes wide side walls and narrow side walls, the lead-out rods 820 can be arranged on both the wide side walls and the two narrow side walls. on the wall.
可以理解为，当m＝2时，由一对引出杆820及辅助动簧片810构成的辅助 触点单元既可以是常开型结构，也可以设计为常闭型结构，亦即，辅助动簧片810与引出杆820常开配合或常闭配合。在实际设计时，可根据继电器的使用场景对辅助触点组件800的组配关系进行组合，例如，当辅助触点组件800包括两组辅助触点单元时，可以是两组常开型的辅助触点单元、两组常闭型的辅助触点单元、两组转换型的辅助触点单元以及三种辅助触点单元的任意组合，于此不再赘述。It can be understood that when m=2, the auxiliary contact unit composed of a pair of lead-out rods 820 and auxiliary moving reeds 810 can be either a normally open structure or a normally closed structure, that is, the auxiliary moving The reed 810 is normally open or normally closed with the lead-out rod 820 . In the actual design, the combination of the auxiliary contact assemblies 800 can be combined according to the use scene of the relay. For example, when the auxiliary contact assembly 800 includes two sets of auxiliary contact units, it can be two sets of normally open auxiliary contact units. Contact units, two sets of normally closed auxiliary contact units, two sets of conversion type auxiliary contact units, and any combination of the three types of auxiliary contact units will not be repeated here.
进一步的，一实施例中，辅助动触点811与引出杆820的接触部为相互配合的一对触片。另一实施例中，辅助动簧片810上与引出杆820接触部位为直片结构，引出杆820的末端为球头；又一实施例中，在辅助动簧片810的接触部位连接一触点，同样的，在引出杆820的末端连接另一触点，以实现辅助动簧片810与引出杆820的配合。当然，辅助动触点811与引出杆820的连接部位也可以采用其他配合形式，以易于使辅助动触点811与引出杆820通断为准，于此不再赘述。Further, in one embodiment, the contact portion of the auxiliary movable contact 811 and the lead-out rod 820 is a pair of contact pieces that cooperate with each other. In another embodiment, the contact part of the auxiliary moving reed 810 with the lead-out rod 820 is a straight-piece structure, and the end of the lead-out rod 820 is a ball head; Similarly, another contact is connected to the end of the lead-out rod 820 to realize the cooperation between the auxiliary movable spring 810 and the lead-out rod 820 . Of course, the connection between the auxiliary movable contact 811 and the lead-out rod 820 may also adopt other matching forms, which are easy to connect and disconnect the auxiliary movable contact 811 and the lead-out rod 820 , which will not be repeated here.
实施本发明的带有辅助触点的高压直流继电器10，将进线静触头200与出线静触头300，即主触头设置在壳体100的顶部，将多个引出杆820设置壳体100的两个相对内侧壁上，并将辅助动簧片810与推杆520配合，使得推杆520在控制动触头510动作的同时，调节辅助动簧片810与引出杆820的通断关系，以便于作业人员根据与引出杆820连接的监测设备判断进线静触头200与出线静触头300的连接情况，即判断继电器的工作状态，由于辅助动簧片810与动触头510绝缘隔离，即对高低压负载进行隔离，且增大了主触头与辅助触点组件800之间的距离。通过将主触点与辅助触点组件800分别设置在壳体100的顶部和壳体100的侧壁，增大了爬电距离以及空气距离，提升了高低负载的隔离效果，并避免了主触头工作中产生的电弧对辅助触点组件800造成的影响或损坏，提升了继电器使用的安全性及可靠性并延长了继电器的使用寿命；通过设置一组及以上的引出杆820，并对每组引出杆820的位置关系进行设定，可根据用户的需求对辅助触点的数量及配合方式进行选择，以满足使用需要；此外，辅助触点组件800设置在壳体100的侧壁上，占用面积较小，且不会增加产品的体积，提升了继电器尺寸对一般电气设备的适应能力，其结构简单，有利于 提升产品的市场竞争力。To implement the high-voltage DC relay 10 with auxiliary contacts of the present invention, the incoming static contact 200 and the outgoing static contact 300, that is, the main contacts, are arranged on the top of the housing 100, and a plurality of lead-out rods 820 are arranged on the housing 100 on the two opposite inner side walls, and cooperate with the auxiliary movable reed 810 and the push rod 520, so that the push rod 520 can adjust the on-off relationship between the auxiliary movable reed 810 and the lead-out rod 820 while controlling the action of the movable contact 510. , so that the operator can judge the connection between the incoming static contact 200 and the outgoing static contact 300 according to the monitoring equipment connected to the lead-out rod 820 , that is, to judge the working state of the relay, because the auxiliary moving reed 810 is insulated from the moving contact 510 Isolation, that is, isolating high and low voltage loads, and increasing the distance between the main contact and the auxiliary contact assembly 800 . By arranging the main contact and the auxiliary contact assembly 800 on the top of the housing 100 and the side wall of the housing 100 respectively, the creepage distance and the air distance are increased, the isolation effect of high and low loads is improved, and the main contact is avoided. The influence or damage to the auxiliary contact assembly 800 caused by the arc generated during the head work improves the safety and reliability of the relay and prolongs the service life of the relay; The positional relationship of the group lead-out rods 820 is set, and the number of auxiliary contacts and the matching method can be selected according to the needs of the user to meet the needs of use; The occupied area is small, and the volume of the product is not increased, which improves the adaptability of the relay size to general electrical equipment, and its simple structure is conducive to improving the market competitiveness of the product.
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

  1. 一种带有辅助触点的高压直流继电器，其特征在于，包括：A high-voltage DC relay with auxiliary contacts, characterized in that it includes:
    壳体，所述壳体的顶部分别穿设有用于由外部电源装置接入电流的进线静触头以及用于向外部电气设备传输电流的出线静触头，所述壳体的底部设有导磁块；A shell, the top of the shell is respectively provided with an incoming line static contact for accessing current by an external power supply device and an outgoing line static contact for transmitting current to external electrical equipment, and the bottom of the shell is provided with Magnetic block;
    推杆组件，包括收容于所述壳体内腔并与所述导磁块抵接的绝缘板、与所述绝缘板固定连接的推杆以及与所述推杆弹性连接的动触头，所述动触头收容于所述壳体的内腔并可沿所述壳体的高度方向相对于所述壳体的内壁移动；The push rod assembly includes an insulating plate accommodated in the inner cavity of the housing and abutting with the magnetic conductive block, a push rod fixedly connected with the insulating plate, and a movable contact elastically connected with the push rod, the The movable contact is accommodated in the inner cavity of the casing and can move relative to the inner wall of the casing along the height direction of the casing;
    密封管，所述密封管的顶部与所述导磁块底部连接并罩设所述推杆，所述密封管内收容有动铁芯，用于推动所述推杆动作；a sealing tube, the top of the sealing tube is connected with the bottom of the magnetic conductive block and covers the push rod, and the sealing tube accommodates a moving iron core for pushing the push rod to move;
    辅助触点组件，包括同轴固定设置在所述绝缘板上并与所述动触头绝缘隔离的辅助动簧片以及穿设所述壳体侧壁的至少一组引出杆，所述辅助动簧片的两边侧分别设有一辅助动触点，每组所述引出杆包括m根引出杆，m为2或3，当m＝2时，每组所述引出杆中的一个引出杆穿设所述壳体一侧壁并对应与一个所述辅助动触点配合，每组所述引出杆中的另一个引出杆对应穿设所述壳体上的相对侧壁并与另一个所述辅助动触点配合；当m＝3时，每组所述引出杆中的一个引出杆穿设所述壳体的一个侧壁并与一所述辅助动触点配合，每组所述引出杆中的另外两个引出杆穿设所述壳体的相对侧壁且沿所述壳体高度方向布置，形成用于限定所述辅助动簧片上的另一个辅助动触点运动范围的限位部；An auxiliary contact assembly, comprising an auxiliary moving reed that is coaxially fixed on the insulating plate and is insulated from the moving contact, and at least one set of lead-out rods penetrating the side wall of the housing, the auxiliary moving The two sides of the reed are respectively provided with an auxiliary movable contact. Each group of the lead-out rods includes m lead-out rods, where m is 2 or 3. When m=2, one of the lead-out rods in each group is passed through. One side wall of the casing is matched with one of the auxiliary movable contacts, and the other lead-out rod in each group of the lead-out rods correspondingly passes through the opposite side wall of the casing and is connected with the other one of the auxiliary movable contacts. The movable contact is matched; when m=3, one of the lead-out rods in each group passes through a side wall of the housing and cooperates with one of the auxiliary movable contacts. The other two lead-out rods penetrate through the opposite side walls of the casing and are arranged along the height direction of the casing to form a limit portion for limiting the movement range of another auxiliary movable contact on the auxiliary movable spring;
    所述推杆在所述动铁芯的作用下推动所述动触头运动以通断所述进线静触头与所述出线静触头，并带动所述辅助动簧片接触或离开所述引出杆，以形成接通回路或断开回路。The push rod pushes the moving contact to move under the action of the moving iron core to turn on and off the incoming static contact and the outgoing static contact, and drives the auxiliary moving reed to contact or leave the The lead-out rod is described to form a make loop or open loop.
  2. 根据权利要求1所述的高压直流继电器，其特征在于，当m＝2时，所述引出杆至所述密封管底部的距离小于所述辅助动触点至所述密封管底部的距离。The HVDC relay according to claim 1, wherein when m=2, the distance from the lead-out rod to the bottom of the sealing tube is smaller than the distance from the auxiliary movable contact to the bottom of the sealing tube.
  3. 根据权利要求1所述的高压直流继电器，其特征在于，当m＝2时，所述引出杆至所述密封管底部的距离大于所述辅助动触点至所述密封管底部的距离。The HVDC relay according to claim 1, wherein when m=2, the distance from the lead-out rod to the bottom of the sealing tube is greater than the distance from the auxiliary movable contact to the bottom of the sealing tube.
  4. 根据权利要求1所述的高压直流继电器，其特征在于，所述推杆组件还 包括固定架以及收纳于所述固定架的弹簧，所述推杆穿设所述固定架的底部，所述弹簧的一端与所述固定架的底部抵接，所述弹簧的另一端所述动触头抵接，为所述动触头的动作提供弹力。The HVDC relay according to claim 1, wherein the push rod assembly further comprises a fixing frame and a spring stored in the fixing frame, the push rod passes through the bottom of the fixing frame, and the spring One end of the spring is in contact with the bottom of the fixing frame, and the other end of the spring is in contact with the moving contact, providing elastic force for the action of the moving contact.
  5. 根据权利要求4所述的高压直流继电器，其特征在于，所述辅助动簧片呈U型结构，包括安装板以及设置于所述安装板两个边侧并向靠近所述壳体顶部方向延伸的耳板，所述耳板向远离所述安装板中部方向折弯以形成辅助动触点。The high-voltage DC relay according to claim 4, wherein the auxiliary moving reed is in a U-shaped structure, comprising a mounting plate and extending toward the top of the housing and disposed on both sides of the mounting plate The ear plate is bent away from the middle of the mounting plate to form an auxiliary movable contact.
  6. 根据权利要求5所述的高压直流继电器，其特征在于，所述固定架的底部位于所述安装板的顶部或底部，且所述固定架与所述安装板之间设有绝缘介质。The HVDC relay according to claim 5, wherein the bottom of the fixing frame is located at the top or the bottom of the mounting plate, and an insulating medium is provided between the fixing frame and the mounting plate.
  7. 根据权利要求5所述的高压直流继电器，其特征在于，所述安装板呈环形结构，所述安装板套设于所述固定架的底部，所述安装板与所述固定架的底部之间设置有绝缘介质。The high-voltage DC relay according to claim 5, wherein the mounting plate is in a ring structure, the mounting plate is sleeved on the bottom of the fixing frame, and the mounting plate is between the bottom of the fixing frame and the fixing frame. Provided with insulating medium.
  8. 根据权利要求1-7任一项所述的高压直流继电器，其特征在于，所述绝缘板由塑料制成。The high-voltage DC relay according to any one of claims 1-7, wherein the insulating plate is made of plastic.
  9. 根据权利要求1-7任一项所述的高压直流继电器，其特征在于，所述壳体包括陶瓷罩壳以及与所述陶瓷罩壳的开口部位高温钎焊连接的过渡块，所述导磁块安装于所述过渡块的外表面底部。The high-voltage DC relay according to any one of claims 1-7, wherein the housing comprises a ceramic housing and a transition block connected to the opening of the ceramic housing by high-temperature brazing, and the magnetically conductive A block is mounted on the bottom of the outer surface of the transition block.
  10. 根据权利要求1-7任一项所述的高压直流继电器，其特征在于，所述辅助动触点与所述引出杆的接触部为相互配合的一对触片。The high-voltage DC relay according to any one of claims 1-7, wherein the contact portion of the auxiliary movable contact and the lead-out rod is a pair of contact pieces that cooperate with each other.
PCT/CN2021/073459 2020-11-10 2021-01-23 High voltage direct current relay having auxiliary contact WO2022099934A1 (en)

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