A temperature measuring device for high voltage motor connection points

Abstract

The present application discloses a temperature measuring device for a high-voltage motor connection point, comprising: an insulating housing for accommodating a data acquisition and transmission module; an insulating cap for accommodating a temperature measuring probe and connecting the insulating housing, the inner shape of which matches the shape of the end of a connection bolt, and the temperature measuring probe and the data acquisition and transmission module are electrically connected. The present application can insulate and protect the temperature measuring probe and is relatively convenient to use.

Description

Technical Field

[0001] The present application relates to the technical field of temperature measurement, and in particular, to a temperature measuring device for a high-voltage motor connection point. Background Art

[0002] High-voltage motors refer to motors with a rated voltage of more than 1000V, which have the advantages of high power and strong bearing capacity. In order to ensure the safe operation and extend the service life of high-voltage motors, it is usually necessary to monitor the operating status of high-voltage motors in real time and provide fault warnings.

[0003] At present, real-time monitoring of the operating status of high-voltage motors is mainly carried out by temperature measurement, and the temperature measurement methods are mainly divided into contact temperature measurement and non-contact temperature measurement. Among them, when installing the temperature measuring probe for contact temperature measurement, it is usually divided into direct insertion type, fixed installation type and threaded connection type.

[0004] When installing the temperature probe according to the spiral connection method, the temperature probe is generally fixed on the wiring bolt, that is, the temperature probe is installed at the wiring point. When the high-voltage motor is in operation, its voltage is relatively high. Since the temperature probe is exposed to the air, there is a risk of breakdown. In order to ensure the safety of the temperature probe, an additional insulation device needs to be installed, which makes the use of the temperature probe more troublesome and the structure of the temperature measuring device more complicated. Summary of the invention

[0005] The embodiment of the present application provides a high-voltage motor connection point temperature measuring device, which can provide insulation protection for a temperature measuring probe and is relatively easy to use.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0007] According to a first aspect of an embodiment of the present application, a high-voltage motor connection point temperature measuring device is provided, comprising:

[0008] An insulating housing, used for accommodating a data acquisition and transmission module;

[0009] The insulating cap is used to accommodate the temperature measuring probe and connect the insulating shell. The internal shape of the insulating cap matches the shape of the end of the wiring bolt. The temperature measuring probe is electrically connected to the data acquisition and transmission module.

[0010] In some embodiments of the present application, based on the aforementioned solution, the temperature measuring probe and the data acquisition and sending module are electrically connected through a signal line, and the signal line extends from the inside of the insulating shell to the inside of the insulating cap to electrically connect the temperature measuring probe.

[0011] In some embodiments of the present application, based on the above solution, the insulating housing includes:

[0012] The first housing is used to accommodate the data acquisition and transmission module;

[0013] The second housing is used to accommodate the signal line and connect the first housing and the insulating cap.

[0014] In some embodiments of the present application, based on the aforementioned solution, the first housing is also used to accommodate wires.

[0015] In some embodiments of the present application, based on the aforementioned solution, the first housing is provided with a first gap through which the wire passes.

[0016] In some embodiments of the present application, based on the aforementioned solution, the opening end of the insulating cap and the first notch are on the same side.

[0017] In some embodiments of the present application, based on the aforementioned solution, the insulating cap is provided with a second notch or through hole through which the signal line passes.

[0018] In some embodiments of the present application, based on the above solution, the data acquisition and sending module includes:

[0019] A collection unit, used for collecting data from the temperature measuring probe;

[0020] A processing unit, used for processing the data of the temperature measuring probe to obtain processed data;

[0021] The wireless transmission unit is used to transmit the processed data.

[0022] In some embodiments of the present application, based on the above solution, the temperature measuring probe includes:

[0023] A connector, used for electrically connecting a data acquisition and transmission module;

[0024] The probe is used to be placed on the outside of the wiring bolt and the electrical connection connector.

[0025] In some embodiments of the present application, based on the aforementioned solution, the insulating shell and the insulating cap are made of rubber material.

[0026] The beneficial effects of this application are as follows:

[0027] Install the temperature probe on the wiring bolt, and then buckle the insulating cap on the end of the wiring bolt. The insulating cap can provide insulation protection for the temperature probe. When using it, only two steps are required: installing the temperature probe and buckling the insulating cap. It is easy to use.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0030] Figure 1 A schematic structural diagram of a high-voltage motor connection point temperature measuring device in a front view according to an embodiment of the present application is shown;

[0031] Figure 2 A schematic diagram of the structure of a high-voltage motor connection point temperature measuring device in a rear view direction in an embodiment of the present application is shown;

[0032] Figure 3 A schematic structural diagram of a high-voltage motor connection point temperature measuring device in a side view according to an embodiment of the present application is shown;

[0033] Figure 4 A schematic diagram of the structure of the first housing in an embodiment of the present application when viewed from above is shown. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0036] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0037] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0038] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0039] Figure 1 A schematic diagram of the structure of a high-voltage motor connection point temperature measuring device in the embodiment of the present application is shown in the front view direction. Figure 2 A schematic diagram of the structure of a high-voltage motor connection point temperature measuring device in a rear view direction in an embodiment of the present application is shown. Figure 3 A schematic diagram of the structure of a high-voltage motor connection point temperature measuring device in a side view according to an embodiment of the present application is shown. Figure 4 The schematic diagram of the structure of the first housing in the embodiment of the present application when viewed from above is shown. Figures 1 to 4 In the figure, 1 is an insulating cap, 2 is a probe, 3 is a connector, 4 is a signal line, 5 is a strip groove, 6 is a second shell, 7 is a first shell, 8 is a first notch, 9 is a protective cover, 10 is an inspection port, 11 is a data acquisition and transmission module, 12 is a second notch, and 13 is an inspection door. Figure 1 and Figure 2 , provides a high-voltage motor connection point temperature measuring device, which includes at least an insulating shell and an insulating cap, which is described in detail as follows.

[0040] The insulating housing is used to accommodate the data acquisition and transmission module.

[0041] Specifically, the insulating shell can be made of insulating material to accommodate the data acquisition and sending module, which can be understood as insulating and protecting the data acquisition and sending module, and installing the data acquisition and sending module in the insulating shell. The shape of the insulating shell can be set as needed, such as setting the surrounding environment of the wiring bolt.

[0042] The insulating cap is used to accommodate the temperature measuring probe and connect the insulating shell. The internal shape of the insulating cap matches the shape of the end of the wiring bolt. The temperature measuring probe is electrically connected to the data acquisition and transmission module.

[0043] Specifically, the insulating cap can be made of insulating material, and the end of the wiring bolt can be understood as providing insulation protection for the temperature measuring probe, and the temperature measuring probe is installed in the insulating cap, and the internal shape matches the shape of the end of the wiring bolt, so that the insulating cap can be buckled on the end of the wiring bolt to provide insulation protection for the end of the wiring bolt, and the temperature measuring probe is electrically connected to the data acquisition and sending module so that the temperature data measured by the temperature measuring probe can be sent out through the data acquisition and sending module.

[0044] It can be understood that the insulating cap and the insulating shell separate the data acquisition and sending module, the temperature measuring probe and the end of the wiring bolt from the external metal body, so that the high-voltage motor temperature measuring device and the wiring bolt are in an equipotential state, avoiding malicious faults such as grounding of the temperature measuring device at the high-voltage motor wiring point and short circuit of the high-voltage motor temperature measuring device at different wiring points.

[0045] Optionally, the temperature measuring probe and the data acquisition and sending module are electrically connected via a signal line, and the signal line extends from the inside of the insulating shell to the inside of the insulating cap to electrically connect the temperature measuring probe.

[0046] Specifically, the electrical connection method between the signal line and the temperature probe can be a three-wire connection, that is, an electrical connection is made through two measurement loop wires and an additional wire to ensure the temperature measurement accuracy. After insulation protection, the insulation strength of the signal line is greater than the preset insulation strength, such as 10KV, to adapt to the working environment of the high-voltage motor.

[0047] Optionally, the resistance of the signal line matches that of the data acquisition and transmission module to avoid excessive heat loss.

[0048] Optionally, the insulating housing comprises:

[0049] The first housing is used to accommodate the data acquisition and transmission module;

[0050] The second housing is used to accommodate the signal line and connect the first housing and the insulating cap.

[0051] Specifically, the first shell is used to insulate and protect the data acquisition and transmission module, and to install the data acquisition and transmission module. The second shell is used to insulate and protect the signal line. The shape of the second shell matches the surrounding environment of the wiring bolt to avoid other components.

[0052] Optionally, an annular protective sleeve for installing the data acquisition and transmission module is provided in the first shell, and the annular protective sleeve is fixedly connected to the inner wall of the first shell.

[0053] Specifically, the annular protective sleeve may be made of insulating material.

[0054] Optionally, an inspection port and an inspection door are provided on the first shell, and the annular protective sleeve is arranged around the inspection port.

[0055] Optionally, the second shell is a hollow structure, and the signal line passes through the cavity of the second shell from the inside of the first shell and extends to the inside of the insulating cap.

[0056] Specifically, when the second shell is a hollow cylinder, its inner diameter matches the outer diameter of the signal line, that is, the outer diameter of the signal line is slightly smaller than or equal to the inner diameter of the second shell, so as to prevent the signal line from moving inside the second shell.

[0057] Optionally, the second shell is a plate-shaped structure with a strip-shaped groove, and the signal line passes through the strip-shaped groove of the second shell from the inside of the first shell and extends to the inside of the insulating cap.

[0058] Specifically, the shape of the strip-shaped groove matches the shape of the signal line, so that the signal line is embedded in the strip-shaped groove to prevent the signal line from shifting.

[0059] Optionally, the first housing is also used to accommodate wires.

[0060] Specifically, the wire may be a wire connected to a wiring bolt, and accommodating the wire may be understood as the first housing providing insulation protection to the wire near the wiring bolt.

[0061] Optionally, the first housing is provided with a first notch through which the wire passes.

[0062] Optionally, the opening end of the insulating cap and the first notch are on the same side.

[0063] Specifically, align the open end of the insulating cap with the wiring bolt. At this time, the first notch is located on the side close to the wiring bolt. Then, buckle the insulating cap on the wiring bolt. The wire passes through the first notch and enters the first shell. The first shell insulates and fixes the wire. When the first shell is made of elastic and tough materials such as rubber material, the fixing effect of the wire is good. In addition, in order to enhance the fixing effect, high-voltage insulating tape can be used to bind the wire and the first shell.

[0064] Optionally, the first shell is a cylinder with a first notch, the first notch is distributed along the axial direction of the cylinder, and the cross-section of the first notch along the radial direction of the cylinder is arc-shaped. When the first notch is half of the cylinder, the first shell is semi-cylindrical.

[0065] Optionally, the insulating cap is provided with a second notch or through hole through which the signal line passes.

[0066] Optionally, the data acquisition and sending module includes:

[0067] A collection unit, used for collecting data from the temperature measuring probe;

[0068] A processing unit, used for processing the data of the temperature measuring probe to obtain processed data;

[0069] The wireless transmission unit is used to transmit the processed data.

[0070] Specifically, the acquisition unit and the processing unit can adopt existing acquisition units and processing units, and the wireless transmission unit can be a Bluetooth communication unit, which can communicate with an external receiver according to a preset network address, and its communication frequency and frequency can be adjusted to reduce interference and save power.

[0071] For example, when the temperature measuring probe is a thermal resistor temperature measuring probe, the acquisition unit is used to collect the real-time resistance of the temperature measuring probe, and the processing unit is used to process the real-time resistance into temperature data, such as by temperature compensation.

[0072] Optionally, the data acquisition and sending module also includes:

[0073] The battery is used for power supply. The battery can be a lithium battery, and a rechargeable lithium battery can be used. When there is a shortage of power, the battery can be replaced.

[0074] Optionally, the temperature measuring probe includes:

[0075] A connector, used for electrically connecting a data acquisition and transmission module;

[0076] The probe is used to be placed on the outside of the wiring bolt and the electrical connection connector.

[0077] Specifically, the probe can be a thermistor, such as a PT100 thermistor, whose resistance changes according to the change of the measured temperature. The probe can be in a circular shape, and its inner diameter can be slightly larger than or equal to the outer diameter of the wiring bolt, so that the probe can fit on the outside of the wiring bolt to improve the temperature measurement accuracy. The connector can be electrically connected to the data acquisition and sending module through a signal line.

[0078] Optionally, the insulating cap and the insulating shell are made of rubber material. On the one hand, it is convenient to shape them according to the internal components. On the other hand, the rubber material is soft and elastic, and has good wrapping and fixing effects on the data acquisition and transmission module, signal lines, wires and temperature measuring probes.

[0079] In order to better understand the embodiments of the present application, a specific example is provided as follows:

[0080] A temperature measuring device for a high-voltage motor connection point comprises an insulating cap, a second shell and a first shell connected in sequence, the insulating cap is cylindrical, a temperature measuring probe is arranged inside the insulating cap, the temperature measuring probe is composed of a connector and a probe, the probe is annular, and its inner diameter is slightly greater than or equal to the outer diameter of a connection bolt, the second shell is a plate-like structure with a strip groove, a signal line is embedded in the strip groove to prevent the signal line from shifting and provide better insulation protection for the signal line, one end of the signal line passes through the second notch to electrically connect the connector, the first shell is cylindrical with a first notch, the open end of the insulating cap, the strip groove and the first notch are located on the same side, that is, Figure 1 On the front side, an inspection port and an inspection door are provided on the first shell, an annular protective cover surrounding the inspection port is provided on the inner wall, a data acquisition and transmission module is provided in the annular protective cover, and the data acquisition and transmission module includes an acquisition unit, a processing unit and a wireless transmission unit, and the wireless transmission unit is a Bluetooth communication unit.

[0081] During actual installation, put the wire and the temperature probe on the wiring bolt of the wiring point, and stick the probe on the wiring nose of the wire. Then fix the wire and the temperature probe with the nut, and then buckle the insulating cap on the end of the wiring bolt. At the same time, the wire passes through the first notch, or the first notch can be pried open to facilitate the wire to pass through and enter the first shell. The first shell clamps the wire. Then ensure that the end of the wiring bolt, that is, the live part, is not exposed, and the signal line is located in the strip groove. Check whether there is any bend or breakage, and whether it is firmly connected to the data acquisition and sending module. Open the inspection door, confirm that there is no abnormality in the appearance of the data acquisition and sending module, and whether the battery is installed. Then turn on the external receiver and place the external receiver within the effective distance of the Bluetooth communication unit. Set the communication parameters according to the address of the Bluetooth communication unit of the data acquisition and sending module, check whether the temperature display of the signal receiver is normal, and after normal debugging, close the inspection door. If it is applied to the wiring point of a three-phase power supply, install the other two phases in the same way, and the wiring point of the three-phase power supply can be measured online in real time.

[0082] The present application can be applied to a power connection point of a high-voltage motor, that is, the present application can be installed in a power connection box of a high-voltage motor.

[0083] In the present application, on the one hand, the temperature probe is installed on the wiring bolt, and then the insulating cap is buckled on the end of the wiring bolt. The insulating cap can insulate and protect the temperature probe. When in use, only two steps are required: installing the temperature probe and buckling the insulating cap. It has the advantage of being easy to use. On the other hand, the wireless temperature measurement method is safer and more reliable than wired temperature measurement, because when performing wired temperature measurement, the temperature measurement signal line carries high voltage, which can discharge to the temperature meter and surrounding conductors, posing a greater risk.

[0084] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0085] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0086] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly or all or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc., which can store program code.

[0087] The above description is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A temperature measuring device for a high voltage motor connection point, characterized in that: include: An insulating housing, used for accommodating a data acquisition and transmission module; The insulating cap is used to accommodate the temperature measuring probe and connect the insulating shell. The internal shape of the insulating cap matches the shape of the end of the wiring bolt. The temperature measuring probe is electrically connected to the data acquisition and transmission module.

2. A high-voltage motor connection point temperature measuring device according to claim 1, characterized in that: The temperature measuring probe and the data acquisition and transmission module are electrically connected via a signal line, and the signal line extends from the inside of the insulating shell to the inside of the insulating cap to electrically connect the temperature measuring probe.

3. A high-voltage motor connection point temperature measuring device according to claim 2, characterized in that: The insulating housing comprises: The first housing is used to accommodate the data acquisition and transmission module; The second housing is used to accommodate the signal line and connect the first housing and the insulating cap.

4. A high-voltage motor connection point temperature measuring device according to claim 3, characterized in that: The first housing is also used to accommodate wires.

5. A high-voltage motor connection point temperature measuring device according to claim 4, characterized in that: The first housing is provided with a first notch through which the wire passes.

6. A high-voltage motor connection point temperature measuring device according to claim 5, characterized in that: The opening end of the insulating cap and the first notch are located on the same side.

7. A high-voltage motor connection point temperature measuring device according to claim 1, characterized in that: The insulating cap is provided with a second notch or through hole through which the signal line passes.

8. A high-voltage motor connection point temperature measuring device according to claim 1, characterized in that: The data acquisition and transmission module comprises: A collection unit, used for collecting data from the temperature measuring probe; A processing unit, used for processing the data of the temperature measuring probe to obtain processed data; The wireless transmission unit is used to transmit the processed data.

9. A high-voltage motor connection point temperature measuring device according to claim 1, characterized in that: The temperature measuring probe comprises: A connector, used for electrically connecting a data acquisition and transmission module; The probe is used to be placed on the outside of the wiring bolt and the electrical connection connector.

10. A high-voltage motor connection point temperature measuring device according to claim 1, characterized in that: The insulating cap and the insulating shell are made of rubber material.

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