Verification temperature transmitter device

Abstract

The invention discloses a device for verifying a temperature transmitter, which relates to the technical field of transformer oil surface temperature controller equipment verification and comprises a shell, and the side part of the shell is provided with a charging interface, a voltage analog quantity output port and a current analog quantity output port. A charging module, a battery, a boosting module, a current generation module, a voltage generation module, an ampere meter, a voltmeter and a potentiometer are arranged in the shell, a power supply enters from the charging interface, flows through the charging module and enters the battery, the battery is connected with the boosting module, and the boosting module is connected with the current generation module and the voltage generation module. The device is connected with each part of the temperature controller to be detected, so that the purpose of checking the oil surface temperature controller of the transformer by holding the device is achieved, the structure is simple, the operation is simple and easy to learn, the existing tedious and inconvenient method for checking the temperature controller of the transformer is replaced, the checking work is simplified, the workload of the operator is reduced, and the working efficiency is improved. The verification efficiency is improved, the working time is saved, the hidden danger of equipment is reduced, and the economic loss is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer oil level temperature controller equipment calibration, and in particular relates to a calibration temperature transmitter device. Background Art

[0002] In the power supply system, if the transformer oil surface temperature is too high, it will accelerate the aging process of the insulation material and reduce the insulation performance of the transformer, thereby increasing the risk of transformer failure and even reducing its service life, directly affecting the operating efficiency and safety of the transformer. In addition, if the transformer oil surface temperature is too high and the high temperature process lasts too long, it may cause a fire accident, posing a serious threat to the safety of equipment and personnel. Therefore, it is very important to accurately monitor the oil temperature of the transformer during operation.

[0003] The existing transformer oil level temperature monitoring equipment is the oil level thermostat, which can accurately display the transformer oil level temperature, and some can also send out an alarm signal in time when the temperature rises. If the temperature reaches a certain limit, the thermostat can also start the fan or directly act on the switch to trip, thereby reminding the operating personnel to strengthen monitoring and take corresponding countermeasures when necessary. However, to ensure that the oil level thermostat always maintains a good working condition, it is necessary to regularly calibrate its indication error, action contact error and other indicators.

[0004] The traditional calibration method has many inconveniences. The current calibration of transformer oil level thermostat has the following deficiencies:

[0005] Since the process of sending data from the transformer oil level thermostat is complicated and needs to go through the main transformer thermometer, digital display, measurement and control device and telecontrol device, once a problem occurs, it is difficult to determine which node has the problem, making it more difficult to eliminate the problem.

[0006] It is difficult to find the fault point when the main transformer thermometer, digital display, and dispatch monitoring temperature are inconsistent. I don't know whether it is the output problem of the main transformer thermometer, the transmission problem of the digital display, the temperature collection problem of the measurement and control device, or the wrong setting of the remote control device coefficient, or whether there is a problem with multiple of the above components? In this case, it usually requires a lot of measurements and calculations to gradually infer and eliminate the problem. There is no way to verify the transmission relationship of higher temperatures.

[0007] Inaccurate inspections make it impossible to accurately determine the exact location of the fault, resulting in the inability to eliminate the fault in a timely manner, causing more serious equipment hazards.

[0008] When using a multimeter to touch the thermostat, it is easy to accidentally touch adjacent contacts, resulting in inaccurate calibration results.

[0009] In addition, the existing verification process usually requires the cooperation of multiple people, which is inefficient and may also cause misjudgment of test results due to insufficient precision of synchronous tests.

[0010] At present, during the acceptance work of the new station, there is no way to verify the curve relationship of the temperature transmission. Now we can only check the temperature when entering the station in the morning, and check the temperature before leaving the station at noon. We can only check a few points, and there is no way to verify the transmission relationship of higher temperatures.

[0011] Therefore, in order to solve the above problems, it is necessary to design a calibration temperature transmitter device to calibrate the transformer oil level temperature controller. Summary of the invention

[0012] The technical problem to be solved by the present invention is to solve the deficiencies in the prior art and to design a temperature transmitter calibration device. The temperature transmitter calibration device has a simple structure and comprises a shell. A power supply and related modules, a current generating module, a voltage generating module, a voltmeter, an ammeter and a potentiometer are arranged inside the shell. The output and input of current and voltage analog quantities and the output of resistance analog quantities are simulated through the above components. The operation is convenient and quick. When in use, the interfaces of the ammeter and the voltmeter are directly connected to the corresponding parts of the oil level temperature controller of the transformer to be tested, so that the staff can calibrate the transformer oil level temperature controller by holding the device of the present invention, replacing the existing cumbersome and inconvenient method of calibrating the transformer temperature controller, simplifying the calibration work, reducing the workload of the operator, improving the calibration efficiency, saving working time, reducing equipment hidden dangers and reducing economic losses, and solving the problems of many deficiencies in the current calibration work of the transformer oil level temperature controller.

[0013] The solution adopted by the present invention to solve the technical problem is:

[0014] A device for calibrating a temperature transmitter,

[0015] It is characterized in that

[0016] Including the housing,

[0017] The side of the housing is provided with a charging interface.

[0018] The housing is provided with a charging module, a battery, a boost module, a current generating module and a voltage generating module.

[0019] The power enters from the charging interface and flows through the charging module. The output end of the charging module is connected to the input end of the battery. The output end of the battery is connected to the boost module. The output end of the boost module is connected to the input end of the current generating module and the input end of the voltage generating module.

[0020] The positive pole of the output end of the current generating module is provided with a first interface, and the negative pole of the output end of the current generating module is provided with a second interface.

[0021] The positive electrode of the output terminal of the voltage generation module is provided with a third interface, and the negative electrode of the output terminal of the voltage generation module is provided with a fourth interface.

[0022] The side of the housing is provided with a voltage analog output port and a current analog output port.

[0023] The positive electrode of the current analog output port is provided with a fifth interface.

[0024] The negative electrode of the current analog output port is provided with a sixth interface.

[0025] The positive electrode of the voltage analog output port is provided with a seventh interface.

[0026] The negative electrode of the voltage analog output port is provided with an eighth interface.

[0027] The first interface corresponds to the fifth interface, the second interface corresponds to the sixth interface, the third interface corresponds to the seventh interface, and the fourth interface corresponds to the eighth interface.

[0028] An ammeter for displaying current and a voltmeter for displaying voltage are also provided inside the housing.

[0029] A potentiometer for providing a resistance analog output is also provided inside the housing.

[0030] As a preferred embodiment of the present invention,

[0031] The negative electrode of the boost module is connected to the negative electrode of the current generation module.

[0032] The node between the negative electrode of the boost module and the negative electrode of the current generation module is connected to the negative electrode of the voltage generation module.

[0033] A switch is provided at the positive electrode of the output terminal of the boost module.

[0034] The switch is connected to the positive electrode of the current generation module.

[0035] The positive electrode of the voltage generation module is connected between the switch and the positive electrode of the current generation module.

[0036] As a preferred embodiment of the present invention,

[0037] The side of the housing is provided with a current generation module knob and a voltage generation module knob.

[0038] The current generation module knob is used to control the magnitude of the current generated by the current generation module.

[0039] The voltage generation module knob is used to control the magnitude of the voltage generated by the voltage generation module.

[0040] As a preferred embodiment of the present invention,

[0041] The potentiometer is a rotary potentiometer.

[0042] As a preferred embodiment of the present invention,

[0043] A first prefabricated hole for placing the display instrument of the ammeter, a second prefabricated hole for placing the display instrument of the voltmeter, and a third prefabricated hole for placing the knob of the potentiometer are provided on the side of the housing.

[0044] As a preferred embodiment of the present invention,

[0045] A switching button is provided on the side of the housing, and the switching button is used to switch the working state of the device of the present invention.

[0046] As a preferred embodiment of the present invention,

[0047] The working state includes an output state and a self-check state.

[0048] As a preferred embodiment of the present invention,

[0049] Both the voltmeter and the ammeter are provided with a self-check interface and an input interface.

[0050] Positive and negative interfaces corresponding to the self-check interface and the input interface are provided.

[0051] The self-check interface of the ammeter is used to connect to the output end of the current generation module.

[0052] The self-check interface of the voltmeter is used to connect to the output end of the voltage generation module.

[0053] The input interface is used to connect to the output end of the component to be detected.

[0054] As a preferred embodiment of the present invention,

[0055] The housing is a rectangular frame.

[0056] The size of the housing is 260mm×50mm×140mm.

[0057] The sizes of the first prefabricated hole and the second prefabricated hole are both 64mm×56mm.

[0058] As a preferred embodiment of the present invention,

[0059] The current generation module uses a current signal generator.

[0060] The voltage generation module uses a voltage signal generator.

[0061] Compared with the prior art, the present invention has the following beneficial effects:

[0062] 1. The device of the present invention provides a device for verifying the temperature transmitter, which has a simple structure and comprises a housing, a power supply and related modules, a current generating module, a voltage generating module, a voltmeter, an ammeter and a potentiometer are arranged inside the housing, and the output and input of the current and voltage analog quantity and the output of the resistance analog quantity are simulated by the above components. The input end of the ammeter and the input end of the voltmeter inside the device of the present invention are connected to the corresponding part of the oil level temperature controller of the transformer to be tested, so that the purpose of the staff to verify the oil level temperature controller of the transformer by holding the device of the present invention is achieved, and the structure is simple and the operation is simple and easy to learn.

[0063] During specific use, the interfaces of the ammeter and the voltmeter are directly connected to the corresponding parts of the oil level temperature controller of the transformer to be tested, so that the staff can check the oil level temperature controller of the transformer by holding the device of the present invention, replacing the existing cumbersome and inconvenient method of checking the transformer temperature controller, simplifying the calibration work, reducing the workload of the operators, improving the calibration efficiency, saving working time, reducing equipment hidden dangers and reducing economic losses.

[0064] 2. The device of the present invention supports analog quantity [Pt100 resistance value, 4-20mA current value, 0-5V voltage value] output, has high compatibility, supports accurate analog quantity acquisition, supports self-test function, and has multiple functions such as verifying the output accuracy of the main transformer body meter, the transmission accuracy of the digital display instrument, the acquisition accuracy of the measurement and control device, and the transmission accuracy of the remote control device coefficient. It can judge which link has problems by simulating the output and input of each node, thereby reducing the difficulty of troubleshooting.

[0065] 3. A switch button is provided on the side of the housing of the device of the present invention, which can switch the working state of the device of the present invention. The staff can select the working state of the device according to different needs. The working state includes the output state and the self-checking state, so that the device of the present invention has the verification and self-checking functions, avoiding the problem of single function of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 A schematic diagram of the internal structure of a temperature transmitter calibration device proposed by the present invention;

[0067] Figure 2 A schematic diagram of a temperature transmitter calibration device proposed by the present invention;

[0068] Figure 3 A side view of a temperature transmitter calibration device proposed by the present invention;

[0069] Figure 4 A schematic diagram of a current generating module for verifying a temperature transmitter device proposed by the present invention;

[0070] Figure 5 Schematic diagram of a potentiometer for a temperature transmitter device verification proposed by the present invention;

[0071] Figure 6 Schematic diagram of an ammeter for a temperature transmitter device verification proposed by the present invention;

[0072] Figure 7 Schematic diagram of a voltmeter for a temperature transmitter device verification proposed by the present invention.

[0073] Description of reference numerals:

[0074] 1. Housing

[0075] 1-1. Charging interface

[0076] 1-2. Current generation module knob

[0077] 1-3. Voltage generation module knob

[0078] 1-4. First prefabricated hole

[0079] 1-5. Second prefabricated hole

[0080] 1-6. Third prefabricated hole

[0081] 1-7. Voltage analog output port

[0082] 1-8. Current analog output port

[0083] 2. Charging module

[0084] 3. Boost module

[0085] 4. Current generation module

[0086] 5. Voltage generation module

[0087] 6. Ammeter

[0088] 7. Voltmeter

[0089] 8. Potentiometer

[0090] 9. Battery

[0091] 10. Component to be detected. Detailed implementation manners

[0092] The following describes the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments:

[0093] It should be noted that the structures, colors, ratios, sizes, etc. illustrated in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0094] Meanwhile, in the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "one end", "the other end", "the middle part", "upper", "one side", "top", "inner", "front part", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0095] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0096] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] As Figures 1-7 shown, the present invention provides a calibration temperature transmitter device, which includes a housing 1. Inside the housing 1, a power supply and its related modules, a current generation module 4, a voltage generation module 5, a voltmeter 7, an ammeter 6, and a potentiometer 8 are provided. By the power supply, the current generation module 4, the voltage generation module 5, the ammeter 6, and the voltmeter 7, the output and input of analog current and voltage analog quantities, and the output of resistance analog quantity are simulated. The corresponding parts of the transformer oil surface temperature controller to be detected are connected through the ammeter 6 and the voltmeter 7, achieving the purpose that the staff holds the device of the present invention to calibrate the transformer oil surface temperature controller. The structure is simple and the operation is simple and easy to learn.

[0098] On the side of the housing 1, there is a charging interface 1-1 for charging. Inside the housing 1, there are a charging module 2, a battery 9, a boost module 3, a current generation module 4, and a voltage generation module 5 corresponding to the charging interface 1-1.

[0099] The power enters from the charging interface 1-1 and flows through the charging module 2. The output end of the charging module 2 is connected to the input end of the battery 9. Through the charging module 2, operations such as voltage stabilization of the current are performed, making the current more easily absorbed and stored by the battery 9. The output end of the battery 9 is connected to the boost module 3. Through the boost module 3, the voltage value of the output current of the battery 9 is increased, so that the current generation module 4 and the voltage generation module 5 have sufficient voltage for subsequent operations. The output end of the boost module 3 is connected to the input end of the current generation module 4 and the input end of the voltage generation module 5, and the power supply for the current generation module 4 and the voltage generation module 5 is completed through the boost module 3.

[0100] The device of the present invention has a built-in power supply and can be directly used without an external power supply during use. It can conveniently verify the accuracy of each measurement and conversion module of the transformer oil surface temperature controller, and improves the calibration efficiency of the transformer oil surface temperature controller device.

[0101] The device of the present invention is provided with a charging interface 1-1 while setting the battery 9, so that the battery 9 can be charged, achieving the purpose of repeated use.

[0102] A first interface is provided at the positive pole of the output end of the current generation module 4, and a second interface is provided at the negative pole of the output end of the current generation module 4. Both the first interface and the second interface are connected to the normally closed switch SB2. A third interface is provided at the positive pole of the output end of the voltage generation module 5, and a fourth interface is provided at the negative pole of the output end of the voltage generation module 5. Both the third interface and the fourth interface are provided with a normally closed switch SB3. Through the normally closed switch SB2 and the normally closed switch SB3, the process of the current / voltage generation module connecting from the current / voltage connection analog output port to the conversion with the voltmeter / ammeter is completed, and the auxiliary switching button completes the switching process of the working state of the device of the present invention.

[0103] On the side of the housing 1, there are a voltage analog output port 1-7 and a current analog output port 1-8. A fifth interface is provided at the positive pole of the current analog output port 1-8, a sixth interface is provided at the negative pole of the current analog output port 1-8, a seventh interface is provided at the positive pole of the voltage analog output port 1-7, and an eighth interface is provided at the negative pole of the voltage analog output port 1-7.

[0104] The first interface corresponds to the fifth interface, the second interface corresponds to the sixth interface, the third interface corresponds to the seventh interface, and the fourth interface corresponds to the eighth interface. The current generation module 4, the voltage generation module 5, the current analog output ports 1-8, and the voltage analog output ports 1-7 are all provided with corresponding interfaces. When the generation module is connected to the analog output interface, the analog outputs of the current generation module 4 and the voltage generation module 5 can be output.

[0105] Inside the housing 1, there is also an ammeter 6 for displaying current and a voltmeter 7 for displaying voltage. The output analog quantity of the component 10 to be detected connected thereto or the analog quantity of the generation module inside the device of the present invention is displayed through the voltmeter 7 and the ammeter 6.

[0106] A potentiometer 8 is also provided inside the housing 1. The potentiometer 8 is used to provide a resistance analog output and serves as a rheostat.

[0107] The working process of the transformer oil level temperature controller includes the following steps.

[0108] In the first step, there is a thermometer with a platinum resistance probe on the main transformer body. The probe of the thermometer extends into the main transformer to convert the temperature value inside the main transformer into an analog output, completing the temperature acquisition work.

[0109] Among them, the thermometers are divided into two categories according to the different analog outputs:

[0110] One category is a passive meter, which outputs a Pt100 resistance value;

[0111] The other category is an active meter, which needs to be connected to a 220V DC or AC power supply and outputs a 4-20mA current value.

[0112] In the second step, the analog quantity output in the first step is connected to the temperature digital display in the main control room or the main transformer body control cabinet through a secondary cable. The analog quantity is collected by the temperature digital display and converted into temperature data, and the temperature of the corresponding thermometer of the current main transformer is displayed through a diode.

[0113] At the same time, the temperature digital display also has the function of converting the collected analog quantity. For example, if the thermometer on the main transformer body outputs a Pt100 resistance value, the temperature digital display can collect this Pt100 resistance value and convert it into a 4-20mA current value or a 0-5V voltage value [both 4-20mA and 0-5V are DC quantities].

[0114] In the third step, the output analog quantity of the digital display in the second step is connected to the measurement and control device through a secondary cable for collection and uploading.

[0115] Currently, the measurement and control device includes two collection methods:

[0116] 1. 4-20mA collection method;

[0117] 2. 0-5V acquisition method.

[0118] There are also two ways to send data to the measurement and control device:

[0119] 1. Send the collected analog quantity directly;

[0120] 2. Convert the collected analog quantity into temperature value and send it up.

[0121] In the fourth step, the data sent by the measurement and control device is sent through the telemetry data sending channel of the remote control device. In this step, the coefficient is set to convert the analog quantity directly sent by the measurement and control device in the third step into a temperature value. After the remote control is sent, the dispatching monitoring can see the real-time temperature of the main transformer.

[0122] The device of the present invention has high compatibility. By connecting the voltmeter 7 and the ammeter 6 to the component to be detected 10 that outputs analog quantities in any of the above four steps, the analog quantity output by the component to be detected 10 can be collected and displayed through the ammeter 6 and the voltmeter 7, and compared with the analog quantity output by the analog quantity output interface after conversion, the transmission accuracy of the digital display, the collection accuracy of the measurement and control device, and the transmission accuracy of the remote control device coefficient can be monitored.

[0123] It supports the output of analog quantities [Pt100 resistance value, 4-20mA current value and 0-5V voltage value], supports accurate acquisition of analog quantities and also has a self-test function. It has multiple functions such as verifying the output accuracy of the main body meter, the transmission accuracy of the digital display, the acquisition accuracy of the measurement and control device, and the transmission accuracy of the remote control device coefficient. It can connect 10 components to be tested to simulate the output and input of each node to determine which link has a problem, thereby reducing the difficulty of troubleshooting.

[0124] The negative pole of the boost module 3 is connected to the negative pole of the current generating module 4, the node between the negative pole of the boost module 3 and the negative pole of the current generating module 4 is connected to the negative pole of the voltage generating module 5, the positive pole of the output end of the boost module 3 is provided with a switch SA1, the switch SA1 is connected to the positive pole of the current generating module 4, the positive pole of the voltage generating module 5 is connected between the switch SA1 and the positive pole of the current generating module 4, and the current generating module 4 and the voltage generating module 5 are powered simultaneously through the boost module 3 to ensure that the current generating module 4 and the voltage generating module 5 output sufficient current and voltage. The switch SA1 is provided at the positive pole of the output end of the boost module 3 to ensure the switch SA1 state of the device, and a corresponding button is provided on the side of the housing 1 for the staff to manually control the switch SA1 state of the device.

[0125] On the side of the housing 1, there are a knob 1-2 of the current generation module 4 and a knob 1-3 of the voltage generation module 5. The knob 1-2 of the current generation module 4 is used to control the magnitude of the current generated by the current generation module 4, and the knob 1-3 of the voltage generation module 5 is used to control the magnitude of the voltage generated by the voltage generation module 5. The output current of the current generation module 4 and the output voltage of the voltage generation module 5 are accurately adjusted through the knob 1-2 of the current generation module 4 and the knob 1-3 of the voltage generation module 5.

[0126] The potentiometer 8 adopts a rotary potentiometer 8, and the resistance value output by the potentiometer can be accurately adjusted according to the test situation.

[0127] On the side of the housing 1, there are a first prefabricated hole 1-4 for placing the display instrument of the ammeter 6, a second prefabricated hole 1-5 for placing the display instrument of the voltmeter 7, and a third prefabricated hole 1-6 for placing the knob of the potentiometer 8. The display instruments of the ammeter and the voltmeter 7 are fixed on the surface of the housing 1 through the first prefabricated hole 1-4 and the second prefabricated hole 1-5, so that the staff can directly view the data displayed by the ammeter 6 and the voltmeter 7 on the housing 1.

[0128] On the side of the housing 1, there is a switching button, which is used to switch the working state of the device of the present invention, so that the staff can select the working state of the device according to different needs.

[0129] The working state includes an output state and a self-check state. The output state is used to output the analog quantities of the current generation module and the voltage generation module; the self-check state is used to implement the inspection of the device body to confirm that there is no problem with the whole device of the present invention. The device of the present invention has the functions of calibration and self-check, avoiding the problem of single function of the device.

[0130] In the output state, the ammeter 6 and the voltmeter 7 are connected to the component 10 to be detected. The output end of the current generation module 4 is connected to the current analog quantity output port 1-8, and the output end of the voltage generation module 5 is connected to the voltage analog quantity output port 1-7. The current of the current generation module 4 and the voltage of the voltage generation module 5 are output through the current analog quantity output port 1-8 and the voltage analog quantity output port 1-7.

[0131] In the self-check state, the ammeter 6 and the voltmeter 7 are not connected to the component 10 to be detected. The output end of the current generation module 4 is connected to the input end of the ammeter 6, and the output end of the voltage generation module 5 is connected to the input end of the voltmeter 7. The current value output by the current generation module 4 and the voltage value output by the voltage generation module 5 are displayed through the ammeter 6 and the voltmeter 7 to ensure the integrity of the device itself.

[0132] The default working state of the device for calibrating the temperature transmitter of the present invention is the output state. It can be used by connecting the component to be detected 10 and turning on the switch SA1, without complex calibration steps. When switching the state, disconnect the ammeter 6 and the voltmeter 7 from the component to be detected 10, press the switching button, the current generating module 4 disconnects from the current analog output port 1-8 and switches to connect to the ammeter 6, and the voltage generating module 5 disconnects from the voltage analog output port 1-7 and switches to connect to the voltmeter 7, and the working state of the device is changed to the self-check state.

[0133] Both the voltmeter 7 and the ammeter 6 are provided with self-check interfaces and input interfaces. The self-check interfaces and input interfaces are both provided with corresponding positive and negative interfaces for connecting different interfaces to achieve the switching of the working state of the device.

[0134] The self-check interface of the ammeter 6 is used to connect to the output end of the current generating module 4, and the self-check interface of the voltmeter 7 is used to connect to the output end of the voltage generating module 5 to complete the self-check function of the device of the present invention; the input interfaces of the ammeter 6 and the voltmeter 7 are both used to connect to the output end of the component to be detected 10 to complete the output function of the device of the present invention.

[0135] The housing 1 adopts a rectangular frame, which reduces the volume of the device as much as possible while accommodating the corresponding components, facilitating storage and handling.

[0136] Preferably, the corners of the housing 1 are provided with rounded corners, and the rounded design avoids the harm of the sharp corners of the device of the present invention to the staff during the calibration process.

[0137] The size of the housing 1 is 260mm×50mm×140mm, with a small volume and a small floor area, facilitating storage; it is light in weight, light and convenient to carry, achieving the purpose of hand-held calibration by the staff, so that the staff can carry it around.

[0138] The staff can directly hold the device of the present invention and use it at any time at the operation site. It is generally applicable to equipment with inaccurate oil surface temperature of the transmission transformer, replacing the existing cumbersome and inconvenient method of calibrating the transformer temperature controller, simplifying the calibration work, improving the calibration efficiency, saving working time, thereby reducing equipment hidden dangers and economic losses.

[0139] The sizes of the first prefabricated hole 1-4 and the second prefabricated hole 1-5 are both 64mm×56mm, ensuring that the display meters of the ammeter 6 and the voltmeter 7 can be completely displayed on the side wall of the housing 1, facilitating the staff to observe the display results.

[0140] The current generating module 4 adopts a current signal generator, and the voltage generating module 5 adopts a voltage signal generator. The current signal generator and the voltage signal generator can be selected from the existing machines on the market, making the device of the present invention easy to replace.

[0141] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

[0142] Many other changes and modifications can be made without departing from the concept and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A temperature transmitter calibration device for calibrating the transformer oil level temperature controller equipment, characterized in that, it includes a housing (1), a charging interface (1-1) is provided on the side of the housing (1), a charging module, a battery, a boosting module, a current generating module and a voltage generating module are arranged inside the housing (1), power enters from the charging interface (1-1) and flows through the charging module. The output end of the charging module is connected to the input end of the battery. The output end of the battery is connected to the boosting module. The output end of the boosting module is connected to the input ends of the current generating module and the voltage generating module, a first interface is provided at the positive pole of the output end of the current generating module, and a second interface is provided at the negative pole of the output end of the current generating module, a third interface is provided at the positive pole of the output end of the voltage generating module, and a fourth interface is provided at the negative pole of the output end of the voltage generating module, a voltage analog output port (1-7) and a current analog output port (1-8) are provided on the side of the housing (1), a fifth interface is provided at the positive pole of the current analog output port (1-8), a sixth interface is provided at the negative pole of the current analog output port (1-8), a seventh interface is provided at the positive pole of the voltage analog output port (1-7), an eighth interface is provided at the negative pole of the voltage analog output port (1-7), the first interface corresponds to the fifth interface, the second interface corresponds to the sixth interface, the third interface corresponds to the seventh interface, and the fourth interface corresponds to the eighth interface, an ammeter for displaying current and a voltmeter for displaying voltage are also arranged inside the housing (1), a potentiometer for providing resistance analog output is also arranged inside the housing (1).

2. A temperature transmitter calibration device according to claim 1, characterized in that, the negative pole of the boosting module is connected to the negative pole of the current generating module, the node between the negative pole of the boosting module and the negative pole of the current generating module is connected to the negative pole of the voltage generating module, a switch is provided at the positive pole of the output end of the boosting module, the switch is connected to the positive pole of the current generating module, the positive pole of the voltage generating module is connected between the switch and the positive pole of the current generating module.

3. A temperature transmitter calibration device according to claim 2, characterized in that, a current generating module knob (1-2) and a voltage generating module knob (1-3) are provided on the side of the housing (1), the current generating module knob (1-2) is used to control the magnitude of the current generated by the current generating module, the voltage generating module knob (1-3) is used to control the magnitude of the voltage generated by the voltage generating module.

4. A temperature transmitter calibration device according to claim 1, characterized in that, the potentiometer adopts a rotary potentiometer.

5. A temperature transmitter calibration device according to claim 4, characterized in that, a first preformed hole (1-4) for placing the display instrument of the ammeter, a second preformed hole (1-5) for placing the display instrument of the voltmeter, and a third preformed hole (1-6) for placing the knob of the potentiometer are provided on the side of the housing (1).

6. A temperature transmitter calibration device according to claim 1, characterized in that, A switching button is provided on the side of the housing (1), and the switching button is used to switch the working state of the device of the present invention.

7. A temperature transmitter calibration device according to claim 6, wherein, the working state includes an output state and a self-check state.

8. A temperature transmitter calibration device according to claim 7, wherein, both the voltmeter and the ammeter are provided with a self-check interface and an input interface, both the self-check interface and the input interface are provided with corresponding positive and negative interfaces, the self-check interface of the ammeter is used to connect to the output end of the current generation module, the self-check interface of the voltmeter is used to connect to the output end of the voltage generation module, the input interface is used to connect to the output end of the component to be detected.

9. A temperature transmitter calibration device according to claim 1, wherein, the housing (1) is a rectangular frame, the size of the housing (1) is 260mm × 50mm × 140mm, the sizes of the first prefabricated hole (1-4) and the second prefabricated hole (1-5) are both 64mm × 56mm.

10. A temperature transmitter calibration device according to claim 1, wherein, the current generation module uses a current signal generator, the voltage generation module uses a voltage signal generator.

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