CN203477086U

CN203477086U - Heating device capable of preventing bearing grease of motor from condensing

Info

Publication number: CN203477086U
Application number: CN201320216691.XU
Authority: CN
Inventors: 赵立君; 郑强
Original assignee: BOHAI OIL EQUIPMENT CHENGDE PETROLEUM MACHINERY FACTORY; CNPC Bohai Equipment Manufacturing Co Ltd
Current assignee: Bohai Petroleum Equipment Chengde Petroleum Machinery Co ltd; China National Petroleum Corp; CNPC Bohai Equipment Manufacturing Co Ltd
Priority date: 2013-04-25
Filing date: 2013-04-25
Publication date: 2014-03-12
Anticipated expiration: 2023-04-25

Abstract

The utility model discloses a heating device capable of preventing the bearing grease of a motor from condensing. In order to overcome the shortage of incapacity of normally working of the motor, caused by that bearing grease used in the motor of an existing oil pumping unit, is easy to condense in a low-temperature environment, the heating device disclosed by the utility model comprises a main shaft of the motor, a bearing and an end cover, wherein a movable ring of the bearing is installed on the neck of the main shaft, an outer ring of the bearing is installed in the end cover, the bearing grease is filled in the end cover and between the end cover and the bearing, and a fixed disc is fixedly installed at the outer side of the end cover; a heater and a temperature control switch are installed in an annular space between the fixed disc and the end cover, the heater is fixedly installed at the inner side of the fixed disc, and the temperature control switch is installed at the outer side of the end cover. The heating device has the beneficial effects of being simple in structure, reasonable in design, and capable of solving the problem of condensing of the bearing grease of the motor, caused by the ultra-low temperature, can be solved with relatively low cost.

Description

Prevent the heating equipment of bearing of motor lubricating grease condensation

Technical field

The utility model relates to a kind of motor, especially relates to the heating equipment that prevents the condensation of bearing of motor lubricating grease that a kind of field is used.

Background technique

Oil exploration equipment pumping unit is arranged in wild environment.In ambient temperature extremely low (lower than subzero 40 ℃) situation, in the bearing of pumping unit motor used, lubricating grease can condense, and becomes lump, causes burn-out of bearing, has a strong impact on the normal operation of motor in the winter time.Generally, motor bearing lubricating grease is selected universal lithium base grease, and operating temperature is-20～120 ℃, can meet general wild environment.But in severe ultralow temperature (lower than subzero 30 ℃) environment, just need to take measures to prevent that ultralow temperature from affecting the normal use of motor, generally with railway brake cylinder lubricating grease, prevent that bearing of motor lubricating grease from condensing, its operating temperature is-50～80 ℃, but the price of this kind of lubricating grease is 20 times of left and right of universal lithium base grease price, and cost is high.

Model utility content

In order to overcome the bearing grease that existing motor of oil extractor uses, in low temperature environment, easily condense, the deficiency that causes motor cisco unity malfunction, the utility model provides a kind of heating equipment that prevents the condensation of bearing of motor lubricating grease, this device can prevent motor bearing lubricating grease condensation, can reduce costs again.

The utility model solves the technological scheme that its technical problem adopts: the heating equipment that prevents the condensation of bearing of motor lubricating grease comprises electric machine main shaft, bearing, end cap, bearing moving-coil is arranged on electric machine main shaft axle journal, bearing outer ring is arranged in end cap, in end cap and between bearing, be filled with bearing grease, in the outside of end cap, be installed with fixedly fixed tray; Heater, temperature detect switch (TDS) are installed in the annular space between fixed tray and end cap, and heater is fixedly mounted on the inner side of fixed tray, and the fixed tray inner side, outside that temperature detect switch (TDS) is arranged on end cap scribbles thermal insulating material; Heater is Electric heating appliance.

The beneficial effects of the utility model are, simple in structure, reasonable in design, can solve ultralow temperature and cause bearing of motor lubricating grease condensation problem under lower cost.

Accompanying drawing explanation

Fig. 1 is the heating equipment structural representation that the utility model prevents the condensation of bearing of motor lubricating grease.

In figure: 1. bearing, 2. lubricating grease, 3. end cap, 4. temperature detect switch (TDS), 5. heater, 6. fixed tray.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.But those skilled in the art should know, the invention is not restricted to listed embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.

The utility model prevents the heating equipment of bearing of motor lubricating grease condensation, comprises electric machine main shaft, bearing 1, end cap 3, and bearing moving-coil is arranged on electric machine main shaft axle journal, and bearing outer ring is arranged in end cap 3, in end cap 3 and between bearing 1, is filled with lubricating grease 2.In the outside of end cap 3, be installed with fixed tray 6; Heater 5, temperature detect switch (TDS) 4 are installed in the annular space between fixed tray 6 and end cap 3, and heater 5 is fixedly mounted on the inner side of fixed tray 6, and temperature detect switch (TDS) 4 is arranged on the outside of end cap 3.Fixed tray 6 inner sides scribble thermal insulating material, increase heat insulation effect.Bearing place at motor shaft two ends is all provided with the heating equipment that prevents the condensation of bearing of motor lubricating grease.

Heater 5 is Electric heating appliance.Temperature detect switch (TDS) 4 is fixedly mounted on end cap 3 outsides, is used for the temperature of monitoring bearing chamber, and when bearing chamber temperature is during lower than-10 ± 5 ℃, the normally-closed contact of temperature detect switch (TDS) 4 is closed, and heater energising, heats automatically; When bearing chamber temperature is during higher than 5 ± 5 ℃, the normally-closed contact automatic disconnection of temperature detect switch (TDS), heater power-off, stops heating.

It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not depart from the claim scope of this patent.

Claims

1. a heating equipment that prevents the condensation of bearing of motor lubricating grease, comprise electric machine main shaft, bearing, end cap, bearing moving-coil is arranged on electric machine main shaft axle journal, bearing outer ring is arranged in end cap, in end cap and between bearing, be filled with bearing grease, it is characterized in that: in the outside of described end cap (3), be installed with fixed tray (6); Heater (5), temperature detect switch (TDS) (4) are installed in the annular space between fixed tray (6) and end cap (3), and heater (5) is fixedly mounted on the inner side of fixed tray (6), and temperature detect switch (TDS) (4) is arranged on the outside of end cap (3).

2. prevent according to claim 1 the heating equipment of bearing of motor lubricating grease condensation, it is characterized in that: described fixed tray (6) inner side scribbles thermal insulating material.

3. prevent according to claim 2 the heating equipment of bearing of motor lubricating grease condensation, it is characterized in that: described heater (5) is Electric heating appliance.