A winding temperature sensor with high reliability and convenient maintenance

Abstract

The utility model belongs to motor temperature measurement field, concretely is a kind of high reliability, easy maintenance winding temperature sensor. Including temperature measurement probe, cable, fixed casing, protection hose, electric connector;Temperature measurement probe is fixed in winding gap by sealing glue, constitutes independent temperature measurement loop;Fixed casing lower end has inlet, and upper end is connected with protection hose;Cable upper end enters fixed casing through the inlet hole reserved in fixed casing lower end;Lower end is connected with temperature measurement probe;Protection hose left side is connected with fixed casing upper end, and right side is connected with electric connector;Electric connector is connected with protection hose and with cable upper end;The utility model design is reasonable, with motor temperature measurement system high reliability, easy maintenance advantage, and traditional technology compares, with higher reliability, better protection performance, sensor dismounting is easy, the advantage that installation is fixed reliably, with good practical application value.

Description

Technical Field

[0001] This utility model belongs to the field of motor temperature measurement, specifically a winding temperature sensor with high reliability and easy maintenance. Background Technology

[0002] Existing winding temperature sensors typically have a PT100 or PT1000 sensitive temperature probe at one end. One end of a cable connects to the probe, and the other end connects to a connector, which provides the winding temperature signal to the system. The probe is fixed to the winding, detects the winding temperature, converts the temperature value into an electrical signal, and transmits it to the system via the cable for identification. Different electrical signals represent different temperature values, and the system determines the current winding temperature based on the identified signal. The drawbacks of existing winding temperature sensors are: unreliable installation and fixation; the cable passes through the housing to provide the signal, requiring holes in the housing for the cable, which is not securely fixed within the housing holes; inconvenient sensor disassembly; requiring disconnection of the system-side wiring, disassembly of the motor and sensor probe, and finally removal of the sensor; poor protection; the sensor cable exits through holes in the housing, which offer poor waterproofing and dustproofing, resulting in poor sealing; and low sensor reliability; damage to a single probe or cable will prevent the sensor from functioning properly. Utility Model Content

[0003] The purpose of this utility model is to provide a winding temperature sensor with high reliability and convenient maintenance. Its advantages are high reliability, convenient maintenance, reliable fixing, convenient disassembly, good protection, and convenient replacement.

[0004] This utility model is achieved using the following technical solution: A high-reliability and easy-to-maintain winding temperature sensor includes a temperature probe, cable, fixed housing, protective hose, and electrical connector; The lower end of the fixed housing has a cable inlet hole, and the upper end is connected to the protective flexible tube. One end of the cable enters the fixed housing through the cable inlet hole at the lower end of the fixed housing, and the other end is connected to the temperature probe. The left side of the protective flexible tube is connected to the upper end of the fixed housing, and the right side is connected to the electrical connector. One end of the cable passes through the protective flexible tube and is connected to the electrical connector.

[0005] More preferably, the temperature probe includes at least three probes, and each temperature probe works independently.

[0006] More preferably, the fixed housing is fastened to the motor base housing by bolts.

[0007] More preferably, the electrical connector interface is adapted to the signal access terminal of the motor control system.

[0008] In a further preferred embodiment, the temperature probe is fixed in the winding gap by sealant to form an independent temperature measurement circuit.

[0009] More preferably, the fixed housing 3 is secured with thread-locking agent when fastened by bolts.

[0010] More preferably, the right side of the protective hose is connected to the electrical connector via a constricted end.

[0011] Further preferably, it also includes a cable connector, one end of which is connected to the upper end of the fixed housing by means of a thread, and the other end of which is connected to the left side of the protective hose by means of a constriction.

[0012] During assembly, first connect the upper end of the fixed housing to the cable connector via threads, and connect the left end of the protective hose to the cable connector via a constriction. Then, connect one end of the cable through the pre-drilled inlet hole at the lower end of the fixed housing to the corresponding wiring hole of the electrical connector. Next, connect the right end of the protective hose to the electrical connector via a constriction. At this point, the protective hose covers the main body of the cable except for the connection points at both ends, thus protecting the cable.

[0013] Next, install and secure the temperature probe to the winding: First, apply sealant evenly to the surface of the temperature probe, especially the area in contact with the winding gaps. Control the amount applied to ensure that it secures the probe without overflowing and affecting the windings and surrounding components. Then, insert the sealant-coated temperature probe into the winding gaps according to the required temperature measurement position on the motor windings. Ensure the temperature probe is firmly placed within the gaps.

[0014] Finally, install the installed winding temperature sensor onto the motor housing: apply threadlocker to the threaded holes of the motor housing or the threaded portion of the bolts. Then, align the mounting housing with the preset installation position on the motor housing, ensuring the bolt holes on the mounting housing align with the threaded holes on the motor housing. Insert the bolts and tighten them to ensure the mounting housing is securely installed on the motor housing. After installation, check that the mounting housing is not loose or displaced and fits tightly against the housing.

[0015] This utility model has a reasonable design and features high reliability and convenient maintenance of the motor temperature measurement system. Compared with traditional technologies, it has the advantages of higher reliability, better protection performance, convenient sensor disassembly, and reliable installation and fixation, and has good practical application value. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a winding temperature sensor.

[0017] Figure 2 This diagram shows the installation of the winding temperature sensor on the motor.

[0018] In the diagram, 1-temperature probe, 2-cable, 3-fixed housing, 4-protective hose, 5-electrical connector, 6-winding temperature sensor, 7-motor housing, 8-cable connector, 301-inlet hole. Detailed Implementation

[0019] To enable those skilled in the art to better understand this utility model, the following description, in conjunction with the accompanying drawings, will provide a clearer and more complete account of the utility model.

[0020] This utility model provides a winding temperature sensor with high reliability and convenient maintenance, which mainly includes a temperature probe 1, a cable 2, a fixed housing 3, a protective hose 4, and an electrical connector 5.

[0021] like Figure 1 As shown, the lower end of the fixed housing 3 has an inlet hole 301, and the upper end is connected to the protective hose 4; one end of the cable 2 enters the fixed housing 3 through the inlet hole 301 reserved at the lower end of the fixed housing 3, and the other end is connected to the temperature probe 1; the left side of the protective hose 4 is connected to the upper end of the fixed housing 3, and the right side is connected to the electrical connector 5; one end of the cable 2 passes through the protective hose 4 and is connected to the electrical connector 5.

[0022] like Figure 1 As shown, the temperature probe 1 includes at least three probes, and each temperature probe 1 operates independently. The mounting housing 3 is fixed to the motor base 7 housing by bolts. The temperature probe 1 is fixed in the winding gaps by sealant, forming an independent temperature measurement circuit.

[0023] like Figure 2 As shown, the fixed housing 3 is secured with thread-locking agent when fastened by bolts.

[0024] like Figure 1 As shown, the right side of the protective hose 4 is connected to the electrical connector 5 via a constriction joint.

[0025] like Figure 1 As shown, it also includes a connector 8. One end of the cable connector 8 is connected to the upper end of the fixed housing 3 by means of a thread, and the other end of the cable connector 8 is connected to the left side of the protective hose 4 by means of a constriction.

[0026] During assembly, first connect the upper end of the fixed housing 3 to the cable connector 8 via threads, and connect the left end of the protective hose 4 to the cable connector 8 via a constriction. Then, connect one end of the cable 2 through the inlet hole 301 reserved at the lower end of the fixed housing 3 to the corresponding wiring hole of the fixed housing 3 and the electrical connector 5. Then, connect the right end of the protective hose 4 to the electrical connector 5 via a constriction. At this time, the protective hose 4 covers the main body of the cable 2 except for the connection parts at both ends, thus protecting the cable.

[0027] Next, install and fix the temperature probe 1 to the winding. First, evenly apply sealant to the surface of the temperature probe 1, especially the area in contact with the winding gap. Control the amount applied to ensure that it can fix the probe in place without overflowing and affecting the winding and surrounding components. Then, insert the temperature probe 1, with the sealant applied, into the winding gap according to the required temperature measurement position on the motor winding. Ensure that the temperature probe 1 is firmly placed in the gap.

[0028] Finally, after assembling the winding temperature sensor 6, install the mounting housing 3 onto the motor housing 7, and apply threadlocker to the threaded holes of the motor housing or the threaded parts of the bolts. Then, fit the mounting housing 3 into the preset installation position on the motor housing 7, ensuring that the mounting housing 3 is firmly installed on the motor housing 7. After installation, check that the mounting housing 3 is not loose or displaced and is tightly fitted to the housing.

[0029] During operation, after the motor starts running, the winding temperature sensor 6 begins continuous operation. Each independent temperature probe 1 senses the temperature changes of the motor windings in real time. Based on the characteristics of the PT100 / PT1000 sensitive temperature sensing element, temperature changes cause changes in its resistance, which in turn converts the temperature signal into an electrical signal. The electrical signal is transmitted through the cable 2, routed inside the fixed housing 3, protected by the flexible conduit 4, and then transmitted to the motor control system via the electrical connector 5. The control system collects these electrical signals in real time and displays them on the system interface.

[0030] The present invention provides a winding temperature sensor with high reliability and convenient maintenance, which is a winding temperature sensor for motor temperature measurement system. Compared with traditional technology, it has the advantages of higher reliability, better protection performance, convenient sensor disassembly and reliable installation and fixing, and has good practical application value.

[0031] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and all should be covered by the protection scope of the claims.

Claims

1. A winding temperature sensor with high reliability and easy maintenance, characterized in that: Includes temperature probe (1), cable (2), fixed housing (3), protective hose (4), and electrical connector (5); The lower end of the fixed housing (3) has an inlet hole (301), and the upper end is connected to the protective hose (4). One end of the cable (2) enters the fixed housing (3) through the inlet hole (301) reserved at the lower end of the fixed housing (3), and the other end is connected to the temperature probe (1). The left side of the protective hose (4) is connected to the upper end of the fixed housing (3), and the right side is connected to the electrical connector (5). One end of the cable (2) passes through the protective hose (4) and is connected to the electrical connector (5).

2. The winding temperature sensor with high reliability and convenient maintenance according to claim 1, characterized in that: The temperature probe (1) includes at least three probes, and each temperature probe (1) works independently.

3. The winding temperature sensor with high reliability and convenient maintenance according to claim 1, characterized in that: The fixed housing (3) is fastened to the outer shell of the motor base (7) by bolts.

4. The winding temperature sensor with high reliability and convenient maintenance according to claim 1, characterized in that: The electrical connector (5) interface is adapted to the signal access terminal of the motor control system.

5. A winding temperature sensor with high reliability and convenient maintenance according to claim 1, characterized in that: The temperature probe (1) is fixed in the winding gap by sealant to form an independent temperature measurement circuit.

6. A winding temperature sensor with high reliability and convenient maintenance according to claim 3, characterized in that: The fixed housing (3) is secured with thread-locking agent when fastened by bolts.

7. A winding temperature sensor with high reliability and convenient maintenance according to claim 1, characterized in that: The right side of the protective hose (4) is connected to the electrical connector (5) by means of a constriction.

8. A winding temperature sensor with high reliability and convenient maintenance according to claim 1, characterized in that: It also includes a cable connector (8), one end of which is connected to the upper end of the fixed housing (3) by means of a thread, and the other end of which is connected to the left side of the protective hose (4) by means of a constriction.

Images