A flameproof + increased safety composite explosion-proof motor with current transformer

A technology for current transformers and explosion-proof motors, which is applied to electrical components, electromechanical devices, and electric components, etc., can solve the problem of high cost of pre-purging devices and positive pressure control devices, high construction materials and labor costs, and reduced motor operation reliability. and other problems, to achieve the effect of light weight, improved connection reliability and simple structure
CN105515258BActive Publication Date: 2018-05-18WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GRP CO LTD
Publication Date
2018-05-18

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an explosion-proof and safety-increased type composite explosion-proof motor with a current transformer. An annular junction box support is welded on the base of an explosion-proof motor body. The annular junction box support is provided with an explosion-proof cover plate. The explosion-proof cover plate is connected with a safety-increased type current transformer junction box via a terminal box base. The explosion-proof cover plate is provided with an explosion-proof cable joint. The terminal box base, the explosion-proof cover plate, the explosion-proof cable joint and the base together form an explosion-proof housing of the motor. In this way, through arranging the current transformer as a measurement element on the explosion-proof motor body for realizing the differential protection, the interphase short-circuit protection function is effectively realized. Therefore, the security level of the explosion-proof motor is effectively realized. The motor is simple in structure, convenient to install and maintain, good in security and reliability and high in explosion-proof level. The technical scheme of the invention can be effectively applied to the explosion-proof motor with the power thereof larger than 2000 kW. The cost of the motor is greatly reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of motors, in particular to a flameproof + increased safety composite explosion-proof motor with a current transformer. Background technique

[0002] The raw materials and products in the petrochemical industry contain a large amount of flammable and explosive substances. According to the requirements of explosion-proof regulations, the motors driving chemical equipment need to use flameproof, increased safety and positive pressure explosion-proof motors. With the enlargement of petrochemical installations, the power of the explosion-proof motors used is also increasing, and the requirements for the explosion-proof safety level of the explosion-proof motors are also getting higher and higher.

[0003] Explosion-proof motor is the key equipment of petrochemical plant, its failure will seriously affect the normal operation of the plant and cause huge economic losses. In the possible faults of the motor, the p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More