SU720551A1

SU720551A1 - Explosion proof electric device

Info

Publication number: SU720551A1
Application number: SU782604602A
Authority: SU
Inventors: Александр Павлович Полторак; Борис Наумович Спиваковский; Евгений Ананьевич Забродский
Original assignee: Предприятие П/Я А-7809
Priority date: 1978-04-11
Filing date: 1978-04-11
Publication date: 1980-03-05

Description

Изобретение относится к взрывонепроницаемым электрическим аппаратам, в частности, к путевым выключателям и кнопочным постам управления.The invention relates to flameproof electrical apparatus, in particular, to limit switches and push-button control stations.

Известны электрические аппараты, содержащие корпус, приводной и вводной узлы, коммутационных)' и вводную камеры, объемы которых образованы корпусом, крышками и разделены взрывонепроницаемой перегородкой, на взрывонепроницае— мой перегородке закреплены проходные ¹зджимы с установленными на них неподвижными контактами с одной стороны перегородки, имеющие клеммы для крепления вводимых в аппарат токопроводов с другой стороны перегородки £1] ц 1*2]. ’Electrical apparatuses are known that include a housing, drive and lead-in assemblies (switching) 'and a lead-in chamber, the volumes of which are formed by the housing, the covers and are separated by an explosion-proof partition, on the explosion-proof partition there are fixed ¹ passageways with fixed contacts mounted on them on one side of the partition, having terminals for mounting the conductors introduced into the apparatus on the other side of the partition £ 1] q 1 * 2]. ''

Известные взрывонепроницаемые .электрические аппараты имеют большие габариты.Known explosion-proof .electric devices are large.

Целью изобретения является уменьшение габаритов.The aim of the invention is to reduce the size.

Цель достигается тем, что во взрывонепроницаемом электрическом аппарате.The goal is achieved in that in a flameproof electrical apparatus.

содержащем корпус, приводной и вводной узлы, коммутационную и вводную камеры,' объемы которых образованы корпусом, по крайней мере, одной крышкой и разделены взрывонепроницаемой перегородкой, на взрывонепроницаемой перегородке закреплены проходные зажимы с установленными на них неподвижными контактами с одной стороны и клеммами для токопроводов с другой ее стороны, коммутационный аппарат с токоведущими элементами, на изоляционном его основании, в перегородке выполнено отверстие, в нем размещен коммутационный аппарат так, что образует с перегородкой взрывозащитное фланцевое сопряжение, при этом изоляционное основание коммутационного аппарата является частью перегородки, а токоведущие элементы являются проходными зажимами, места сопряжения коммутационного аппарата с перегородкой заполнены затвердевающим компаундом или клеем, например, эпоксидной смолой.comprising a housing, drive and input nodes, switching and input chambers, the volumes of which are formed by the housing with at least one cover and separated by a flameproof partition, passage clamps are mounted on the flameproof partition with fixed contacts on one side and terminals for conductors with on the other hand, a switching device with current-carrying elements, on its insulating base, a hole is made in the partition, a switching device is placed in it so that it forms with a partition, explosion-proof flange coupling, while the insulating base of the switching apparatus is part of the partition, and current-carrying elements are passage clamps, the interface between the switching apparatus and the partition is filled with a hardening compound or glue, for example, epoxy resin.

На фигуре 1 изображен непроницаемый электрический аппарат, разрез; на фиг. 2 'разрез А—А фиг. 1; на фиг. 3 — 5 — вид Б фиг. 1; на фиг. 6 — вариант выполнения аппарата; на фиг. 7 — взрывонепроницаемая перегородка с микропереключателем, применяемая в аппарате по фиг. 6, изображенная в аксонометрии.The figure 1 shows an impermeable electrical apparatus, a section; in FIG. 2 'section A — A of FIG. 1; in FIG. 3 - 5 - view B of FIG. 1; in FIG. 6 - embodiment of the apparatus; in FIG. 7 - flameproof partition with microswitch used in the apparatus of FIG. 6, depicted in a perspective view.

Взрывонепроницаемый электрический аппарат содержит корпус 1, приводной узел 2 и вводной узел, образованный гайкой 3 и уплотнительным кольцом 4, коммутационную камеру 5 и вводную камеру 6.Explosion-proof electrical apparatus includes a housing 1, a drive unit 2 and an inlet node formed by a nut 3 and a sealing ring 4, a switching chamber 5 and an inlet chamber 6.

Объемы камер 5 и 6 образованы корпусом 1, крышками 7 и ’ взрывонепроницаемой перегородкой 8, боковые стенки 9-10 которой являются боковыми стенками корпуса 1.The volumes of the chambers 5 and 6 are formed by the housing 1, the covers 7 and ’explosionproof partition 8, the side walls 9-10 of which are the side walls of the housing 1.

В коммутационной камере 5 размещен микровыключатель 11, на изоляционном основании 12 которого размещены токоведущие элементы - неподвижные контакты 13 и подвижные контакты 14.A microswitch 11 is placed in the switching chamber 5, on the insulating base 12 of which live elements are placed - fixed contacts 13 and movable contacts 14.

Часть взрывонепроницаемой перегородки 8 образована стенкой 15 изоляционного основания 12, на которой размещены проходные зажимы 16. На одной стороне проходных зажимов 16 установлены неподвижные контакты 13, а на другой — клеммы 17 для подсоединения вводимых в аппарат токопроводов 18.Part of the flameproof partition 8 is formed by the wall 15 of the insulating base 12, on which the passage clamps 16 are placed. Fixed contacts 13 are installed on one side of the passage clamps 16, and terminals 17 for connecting the conductors 18 introduced into the apparatus are installed on the other side.

Боковые стенки 19-20 изоляционного основания 12, перпендикулярные стенке 15, образуют с перегородкой 8 взрывозащитное фланцевое сопряжение.The side walls 19-20 of the insulating base 12, perpendicular to the wall 15, form an explosion-proof flange connection with the partition 8.

В боковой стенке 9 взрывонепроницаемой перегородки 8 размещен приводной узел 2, а в боковой стенке 10 — вводной узел.A drive unit 2 is placed in the side wall 9 of the flameproof partition 8, and an input unit is located in the side wall 10.

При встройке микровыключателя в прямоугольное отверстие перегородки, повтор’яющее форму изоляционного основания, в сопряжении прямоугольных кромок основания со стенками перегородки невозможно получить плоское взрывозащитное сопряжение фланцев, контролируемое при изготовлении и эксплуатации. Поэтому при сопряжении боковых стенок 192.0 одна с другой_ радиусом скругления более 1 мм изоляционное основание микровыключателя может образовывать с перегородкой 8 взрывозащищенное фланцевое сопряжение при заливке щели в зоне углов клеем 21 (например, клеем БФ-2).When a microswitch is inserted into a rectangular opening of the partition, which repeats the shape of the insulating base, in conjugation of the rectangular edges of the base with the walls of the partition, it is impossible to obtain a flat explosion-proof coupling of the flanges, controlled during manufacture and operation. Therefore, when mating the side walls 192.0 with each other_ with a rounding radius of more than 1 mm, the insulating base of the microswitch can form an explosion-proof flange mate with partition 8 when filling the gap in the corner zone with adhesive 21 (for example, BF-2 glue).

При сопряжении боковых стенок 1920 одна с другой незначительным радиусом скругления (менее 1 мм) для обеспечения взрывозащиты между местом сопряжения стенок 19-20 одна с другой и перегородкой 8 необходимо выполнять полости 22, заполненные затвердевающим компаундом, например, эпоксидной смолой. При этом плоские стенки 19-20 образуют вместе со стенками перегородки взрывозащитное сопряжение.When the side walls of 1920 are mated with one another with a small rounding radius (less than 1 mm), in order to provide explosion protection between the place where walls 19-20 are mated with one another and the partition 8, it is necessary to create cavities 22 filled with a hardening compound, for example, epoxy resin. In this case, the flat walls 19-20 form an explosion-proof interface together with the walls of the partition.

В аппаратах с одной крышкой (фиг.In devices with one cover (Fig.

7, 8) извлекаемая из оболочки взрывонепроницаемая перегородка 8, в которой размещены микровыключатели 11, выполняется с цилиндрическим резьбовым или плоским фланцем 23, образующим с корпусом 1 взрывозащитное сопряжение.7, 8) the flameproof partition 8, which is removed from the shell, in which the microswitches 11 are placed, is made with a cylindrical threaded or flat flange 23, forming an explosion-proof interface with the housing 1.

Claims

The invention relates to explosive electrical apparatus, in particular, to trip switches and push-button control stations. Electrical apparatuses are known, comprising a housing, a drive and an input unit, a commutation unit and an introductory chamber whose volumes are formed by a housing, lids and separated by an impermeable partition; pass-through clamps with fixed contacts on one side of the partition, having terminals, are fixed to the flameproof partition for fastening the conductors inserted into the apparatus on the other side of the partition f 1 c. Known explosion-proof. Electric apparatus have large dimensions. Tse; tgo invention is a reduction in size. The goal is achieved by tem) that in) an explosion-proof ajieKTp.iPiecKOM device. comprising a housing, driving and introductory assemblies, switching and introductory chambers, the volumes of which are formed by a housing with at least one lid and separated by an explosion-proof partition, pass-through clamps with fixed contacts on one side and terminals for conductors mounted on the explosion-proof partition on the other hand, the switching device with current-carrying elements, on its insulating base, is made a hole in the partition, it houses the switching device so that uet septum azryvozashitnoe flange interfacing, wherein an insulating base of the switching device is part of the partition, and the conductive elements are looping clamps space interface switching device filled with a settable compound septum or glue, such as epoxy resin. Figure 1 shows an impermeable electrical apparatus, a slit; in fig. 2, section A-A of FIG. 1 {in FIG. 3-S view B of FIG. one; in fig. 6 embodiment of the apparatus; in fig. 7 - explosion-proof partition with a microswitch used in the apparatus of FIG. 6, is a pictorial perspective view. The explosion-proof electrical apparatus includes a housing 1, a drive assembly 2 and an inlet assembly formed by a nut 3 and a sealing ring 4, a switching chamber 5 and an introductory chamber 6. The volumes of chambers 5 and 6 are formed by a housing 1, covers 7 and a blast-proof partition 8, The side walls 9-10 of which are the side walls of the housing 1. In the switching chamber 5 pc1 displacement there is a microswitch 11, on the insulating base 12 of which there are current blowing elements - fixed catches 13 and moving contacts 14. A part of flameproof cus Rod 8 is formed by wall 15 of insulating base 12, on which pass clamps 16 are located. On one side of pass clamps 16 there are fixed contacts 13, and on another terminal 17 for connecting conductors 18 introduced into the apparatus. Side walls 19-20 of insulating base 12, perpendicular to wall 15, are formed with a partition 8. Ezryzvo-protective flange mating. In the side wall 9, the sealing wall 8 is located near the building node 2, and in the side wall 10 is input. When the microswitch is inserted into the rectangular opening of the partition, it is impossible to obtain the repeated shape of the insulating base, in conjunction with rectangular edges of the partition wall flat explosion-proof mating flanges, controlled during manufacture and operation. Therefore, when the side walls 19-20 mate with each other with a radius of more than 1 mm, the isolation switch base of the microswitch can form an explosion-proof flange interface with the partition 8 when the gap is filled in the corner area with glue 21 (for example, BF-2 glue). When mating the side walls IV-0 one to another with a slight radius of rounding (less than 1 mm), in order to ensure explosion protection between the point of discharge of the walls 19-2O with the other partition 8, cavities 22 must be filled with hardened impingement, for example, epoxy resin . In this case, the flat walls 19-20 together with the walls of the partition form an explosion-proof interface. In apparatus with one lid (FIGS. 7, 8), the partition 8, in which the microswitches 11 are placed, is removed from the casing, is made with a cylindrical threaded or flat flange 23, which forms an explosion-resistant binder 1 (housing. 1). 1. Explosion-proof electrical amiapax, comprising a housing, drive and input nodes, switching and introductory red measures, the volumes of which are formed by a housing with at least one flap and are separated by an explosion-proof partition, on which presses with fixed contacts on one side of the partition and terminals for current conductors on the other side, a switching device with current-carrying elements on its insulating base, characterized in that, in order to reduce overall dimensions, an opening is made in the partition the switching device is placed in such a way that it forms an explosion-proof flange coupling with the partition, the insulation base of the switching device being part of the partition, and the current-carrying & GO elements are single clamps. 2. An explosion-proof electrical apparatus according to claim 1, dated by the fact that the interface of the switching apparatus with the partition is filled with a hardening compound, for example, epoxy resin. Sources of information taken into account in expert opinion 1, UK Patent No. 795543, 38 (5) B, 1960.

2. The patent of Great Britain .9 7589G3, 38 (5) B, 1961.

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