A temperature measurement system

Abstract

The present invention relates to a temperature measurement system (1) which enables the temperature of a system rotating particularly as the rotor of an electric motor, to be measured by means of sliding plates that provide electrical conduction.

Description

[0001] DESCRIPTION

[0002] A TEMPERATURE MEASUREMENT SYSTEM

[0003] Technical Field

[0004] The present invention relates to a temperature measurement system which enables the temperature of a system rotating particularly as the rotor of an electric motor, to be measured by means of sliding plates that provide electrical conduction.

[0005] Background of the Invention

[0006] The rotor is an important part of the electric motor, and it is necessary to measure the temperature of the rotor of the electric motor for the analysis of design parameters such as efficiency, proper operation, reliability; for the verification of thermal analysis of the rotor temperature by temperature measurement; and for the use of rotor temperature in control algorithm optimization. In the state of the art, there are solutions for measuring the rotor temperature. There are temperature measurement systems obtained through the use of wired or wireless sensors among the said solutions. Wireless systems make the design complex as the sensor needs to fit into the tight space inside the engine, along with the receiver and transmitter components. It also creates serious differences in terms of cost. On the other hand, in wired systems, measurements cannot be performed with standard cables as the cable can be entangled on the rotating part. For this reason, today, there is a need for wired measurement solutions that can be applied in a tight space and at the same time will not pose a cost problem and can overcome existing cable entanglement problems.

[0007] The European patent document no. EP4152572A1, an application included in the state of the art, discloses a drive device which enables the power that allows the movement of the vehicle to be transferred to the wheels by generating it. The drive device disclosed in the said invention comprises a rotary electrical machine which comprises a stator and a rotor for generating the energy required for the wheel. The invention includes a control mechanism that controls the rotary electric machine. There is at least one rotation sensor which is connected to the control mechanism via a first signal line and shares the rotational speed of the rotor with the control mechanism by detecting it within the rotary electric machine. There is also at least one temperature sensor which is connected to the control mechanism via a second signal line and enables the temperature on the stator to be detected. The temperature sensor disclosed in the invention enables the temperature on the stator to be determined. It is disclosed that a sensor for determining the temperature of the stator may be a thermistor and / or a thermocouple.

[0008] Summary of the Invention

[0009] An object of the present invention is to realize a temperature measurement system which enables measurement of a 360-degree rotating system and which enables especially the temperature measurement of the rotor in an electric motor to be realized by means of the contact of the probes with the sliding rings that do not touch the rotor shaft, enable the electrical circuit to be completed and are located on the rotor.

[0010] Detailed Description of the Invention

[0011] “A Temperature Measurement System” realized to fulfil the objective of the present invention is shown in the figures attached, in which:

[0012] Figure 1 is a perspective view of an inventive temperature measurement system.

[0013] Figure 2 is an exploded perspective view of an inventive temperature measurement system. The components illustrated in the figure are individually numbered, where the numbers refer to the following:

[0014] 1. System

[0015] 2. Body

[0016] 3. Stator

[0017] 4. Rotor

[0018] 5. Shaft

[0019] 6. Sliding Ring

[0020] 7. Isolation Layer

[0021] 8. Probe

[0022] 9. Adapter

[0023] 10. Measurement Screen

[0024] An inventive temperature measurement system (1) which enables the temperature of rotary systems and in particular of the rotor located in an electric motor to be measured comprises at least one body (2); at least one stator (3) which is located in a fixed position in the body (2); at least one rotor (4) which moves in the body (2) and has a probe cable that will be used for temperature measurement at the center thereof; at least one shaft (5) which is located in the center of the rotor (4), provides motion to the rotor (4) and has a geared structure at one end; at least two conductive sliding rings (6) which are placed on the surface where the end of the rotor (4) that does not have a gear shaft (5) is located; provides electrical conduction; and whereto the sensor cables inside the rotor (4) are connected and which rotate on the surface of the rotor (4); at least one isolation layer (7) which is used for providing isolation between the conductive sliding rings (6) and is located between the sliding rings (6); at least one probe (8) which is used for temperature measurement of the rotor (4) and enables electrical connection with the sensor cables for measurement to be realized by contacting the sliding rings (6); at least one adapter (9) wherein the probes (8) are located thereon so as to enable the probes (8) to perform a measurement in the desired position by adjusting the contact of them with the sliding rings (4); at least one measurement screen (10) which is configured to display the measured values of the probes (8).

[0025] The body (2) included in the inventive system (1) comprises a stator (3) in a fixed position and a rotor (4) that performs rotational movement by means of the shaft (5) in the stator (3). The body (2) has an opening for the stator (3), rotor (4) and shaft (5) to be placed therein. The stator (3) forms the fixed part of the electric motor, while the rotor (4) is the moving part inside the stator (3). There are sensor cables in the center of the rotor (4) that enable the electrical connection between the probe (8) and the sliding ring (6) to be established and the temperature measurement to be performed.

[0026] The sliding ring (6) included in the inventive system (1) is located on the outer surface of the rotor (4) and is the part in contact with the probes (8) that are used for measuring the temperature of the rotor (4). There is no cable breakage or entanglement as the probes (8) that measure the temperature contact the sliding rings (6) while the rotor (4) is in motion. The sliding rings (6) are the part that provides electrical conduction in the electric motor in which the rotor (4) rotates and can move 360° as it does not have a fixed cable.

[0027] The isolation layer (7) included in the inventive system (1) is an isolation paper and provides isolation between the sliding rings (6). The isolation layer (7) is used together with the sliding rings (6) in such a way that there is one between each signal line and the surrounding conductive structure. In the inventive system (1), there are a plurality of connection holes which are positioned in such a way as to correspond to each other for the purpose of connection to the rotor on the isolation layer (7) and the sliding rings (6).

[0028] The probe (8) included in the inventive system (1) is a thermocouple used for measuring temperature and is connected to the measurement screen (10) by means of the connection cables. In the preferred embodiment, the probe (8) is a temperature sensor. The probes (8) are located on the adapter (9) and can move closer to and move away from the rotor (4) with the motion of the adapter (9). In this way, the desired level of contact of the probes (8) with the sliding rings (6) is provided. The probes (8) complete the circuit with the sensor cables located in the center of the rotor (4) by contacting the conductive sliding rings (6) and perform temperature measurement.

[0029] The adapter (9) included in the inventive system (1) accommodates the placement of the probes (8) and their movement in the housing axis. The adapter brings the probes (8) closer to or further away from the sliding ring (6). If the rotor (4) in the electric motor is to reach very high speeds, the contact of the probes (8) with the sliding rings (6) is terminated by sliding them by means of the adapter (9). In this way, false temperature measurements that may occur at high speeds are avoided. When the rotor (4) stops, the probes (8) are being contacted with the sliding rings (6) from the desired position by moving them again by means of the adapter (9). The adapter (9) moves the probes (8) located thereon simultaneously and adjusts the contact level with the sliding rings (6).

[0030] The measurement screen (10) included in the inventive system (1) is a temperature display equipment configured to display the measurement values that it receives from the probe (8). The measurement screen (10) enables the temperature data that it receives from the probe (8) to be displayed by means of cables.

[0031] Industrial Application of the Invention The temperature of the rotor (4) is measured during the operation of the electric motor by means of the inventive system (1). For this, the sliding rings (6) are placed on the outer surface of the rotor (4) and the cables of the probe (8) that will be used for temperature measurement are connected to the sliding rings (6). The other end of the said cable is located in the center of the rotor (4) and enables the temperature measurement values to be transmitted to the measurement screen (10) through the contact of the probe (8) with the sliding ring (6). In the system (1), the probes (8) receive the measurement signals at the center of the rotor (4) upon the establishment of electrical conduction with the sliding rings (6) after the rotor (4) starts its motion and display them on the measurement screen (10). The contact of the probes (8) to the sliding ring (6) can be adjusted by means of the adapter (9). In this way, possible errors at high speeds are avoided; the probes (8) are brought into contact with the sliding rings (6) during the motion if desired and the electric motor is not expected to stop. The rotor temperature is measured mostly in prototype motors by means of the inventive system (1). In this way, the obtained temperature information enables functions such as driving with stable torque, accelerating with the desired momentum, and controlling the temperature limits of the motor to be provided.

[0032] Within these basic concepts; it is possible to develop various embodiments of the inventive “A Temperature Measurement System (1)”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.

Claims

CLAIMS1. A system ( 1 ) which enables the temperature of the rotor located in an electric motor to be measured; comprising at least one body (2); at least one stator (3) which is located in a fixed position in the body (2); and characterized by at least one rotor (4) which moves in the body (2) and has a probe cable that will be used for temperature measurement at the center thereof; at least one shaft (5) which is located in the center of the rotor (4), provides motion to the rotor (4) and has a geared structure at one end; at least two conductive sliding rings (6) which are placed on the surface where the end of the rotor (4) that does not have a gear shaft (5) is located; provides electrical conduction; and whereto the sensor cables inside the rotor (4) are connected and which rotate on the surface of the rotor (4); at least one isolation layer (7) which is used for providing isolation between the conductive sliding rings (6) and is located between the sliding rings (6); at least one probe (8) which is used for temperature measurement of the rotor (4) and enables electrical connection with the sensor cables for measurement to be realized by contacting the sliding rings (6); at least one adapter (9) wherein the probes (8) are located thereon so as to enable the probes (8) to perform a measurement in the desired position by adjusting the contact of them with the sliding rings (4); at least one measurement screen (10) which is configured to display the measured values of the probes (8).

2. A system (1) according to Claim 1; characterized by the body (2) which comprises a stator (3) in a fixed position and a rotor (4) that performs rotational movement by means of the shaft (5) in the stator (3).

3. A system (1) according to Claim 1 or 2; characterized by the rotor (4) which has sensor cables that enable the electrical connection between the probe (8) and the sliding ring (6) to be established and the temperature measurement to be performed, in the center thereof.

4. A system (1) according to any one of the preceding claims; characterized by the sliding ring (6) which is located on the outer surface of the rotor (4) and is the part in contact with the probes (8) that are used for measuring the temperature of the rotor (4).

5. A system (1) according to any one of the preceding claims; characterized by the sliding rings (6) which are the part that provides electrical conduction in the electric motor in which the rotor (4) rotates and can move 360° as it does not have a fixed cable.

6. A system (1) according to any one of the preceding claims; characterized by the isolation layer (7) which is an isolation paper and provides isolation between the sliding rings (6).

7. A system (1) according to any one of the preceding claims; characterized by the isolation layer (7) which is used together with the sliding rings (6) in such a way that there is one between each signal line and the surrounding conductive structure.

8. A system (1) according to any one of the preceding claims; characterized by the probe (8) which is a thermocouple used for measuring temperature and is connected to the measurement screen (10) by means of the connection cables.

9. A system (1) according to any one of the preceding claims; characterized by the probe (8) which is a temperature sensor.

10. A system (1) according to any one of the preceding claims; characterized by the probes (8) which are located on the adapter (9) and can move closer to and move away from the rotor (4) with the motion of the adapter (9).

11. A system (1) according to any one of the preceding claims; characterized by the probes (8) which complete the circuit with the sensor cables located in the center of the rotor (4) by contacting the conductive sliding rings (6) and perform temperature measurement.

12. A system (1) according to any one of the preceding claims; characterized by the adapter (9) which accommodates the placement of the probes (8) and their movement in the housing axis.

13. A system (1) according to any one of the preceding claims; characterized by the measurement screen (10) which is a temperature display equipment configured to display the measurement values that it receives from the probe (8).

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