Jig for testing heating function of ejector

Abstract

An ejector heating function test fixture comprises a controller, a temperature transmitter and a timer are connected to the controller, the temperature transmitter is used for detecting real-time heating temperature parameters of an ejector, and the timer is used for recording heating time corresponding to the ejector; the controller is connected with a switching power supply through a switch button, and the switching power supply is used for supplying power to the ejector for heating, so that the ejector is heated to a specified temperature; the controller is connected with a display screen through a communication line, and the display screen is used for displaying temperature parameters and heating time parameters; the controller is connected with an indicating lamp, and the indicating lamp is used for displaying the working state of the test fixture.

Description

Technical field:

[0001] The utility model relates to a test fixture for the heating function of an ejector. Background technology:

[0002] The ejector is a device that uses a high-speed, high-energy flow to eject another low-speed, low-energy flow. The jet bursts into the mixing chamber through a high-pressure convergent nozzle, surrounded by the ejected jet. Through the mixing effect of the boundary, the ejected jet transfers energy to the ejected jet, doing work on the ejected gas and increasing its energy.

[0003] In order to verify the performance of the ejector, it is necessary to evaluate and test the heating function of the ejector. The existing test fixtures often directly power and heat the ejector during the test, and provide feedback on the specific performance of the ejector based on the temperature rise coefficient of the ejector. However, the existing test fixtures do not have control and timing links, and cannot accurately combine the heating time and heating temperature. The test automation level is low, resulting in high labor costs in the test process, high defective rate and scrap rate of the ejector, and cannot accurately evaluate the performance of the ejector. Utility model content:

[0004] The embodiment of the utility model provides an ejector heating function test fixture, which has a reasonable structural design, is based on the integrated control function of the controller, and cooperates with various types of electrical components and functional modules to accurately combine the heating test temperature and heating test time of the ejector, thereby improving the accuracy and test efficiency of the ejector heating function test, reducing the overall labor cost, thereby improving the overall production efficiency, effectively avoiding the occurrence of defective or defective products, and solving the problems existing in the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A test fixture for the heating function of an ejector, comprising a controller, a temperature transmitter and a timer connected to the controller, the temperature transmitter being used to detect the real-time heating temperature parameter of the ejector, and the timer being used to record the heating time corresponding to the ejector;

[0007] The controller is connected to a switching power supply via a switch button, and the switching power supply is used to supply power and heat the ejector so that the ejector is heated to a specified temperature;

[0008] A display screen is connected to the controller via a communication line, and the display screen is used to display temperature parameters and heating time parameters; an indicator light is connected to the controller, and the indicator light is used to display the working status of the test fixture.

[0009] The controller is connected to the temperature transmitter via an AD converter, the controller is connected to the display screen via a communication line, and the controller is connected to the indicator light via a relay.

[0010] The indicator lights include a green indicator light, a yellow indicator light and a red indicator light. The controller is connected to the green indicator light via a first relay, the controller is connected to the yellow indicator light via a second relay, and the controller is connected to the red indicator light via a third relay.

[0011] The controller is a PLC, whose model is S7-200. A plurality of pins are provided on the controller. The controller is connected to the AD converter via pin Q1.7, the controller is connected to the first relay via pin Q1.5, the controller is connected to the second relay via pin Q1.2, the controller is connected to the third relay via pin Q0.6, the controller is connected to the switch button via pin Q0.5, and the controller is connected to the timer via pin Q0.2.

[0012] The model of the AD converter is AD8551, and 8 pins are arranged on the AD converter. The AD converter is connected to the pin No. 15 of the controller via the pin No. 6, and the AD converter is connected to the temperature transmitter via the pin No. 3. The model of the temperature transmitter is SHT20.

[0013] The model of the timer is DS1302, and 8 pins are provided on the timer. Pin 6 and pin 7 of the timer are short-circuited, and a fourth resistor and a fourth capacitor are provided between pin 6 and pin 7. Pin 7 of the timer is connected to pin Q0.2 of the controller.

[0014] The utility model adopts the above structure, detects the real-time heating temperature parameters of the ejector through a temperature transmitter, and records the corresponding heating time of the ejector through a timer; displays the temperature parameters and heating time parameters through a display screen, and displays different working states of the fixture through three-color indicator lights, which facilitates and intuitively performs detection, improves the overall production detection efficiency and detection accuracy, and has the advantages of being practical, efficient, simple and accurate. Description of the drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 This is the electrical schematic diagram of the controller of the utility model.

[0017] Figure 3 This is an electrical schematic diagram of the AD converter of the present utility model.

[0018] Figure 4This is the electrical schematic diagram of the temperature transmitter of the utility model.

[0019] Figure 5 The utility model is an electrical schematic diagram of the indicator light.

[0020] Figure 6 This is the electrical schematic diagram of the timer of the utility model. Specific implementation method:

[0021] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0022] like Figure 1-6 As shown in, a test fixture for the heating function of an ejector includes a controller, to which a temperature transmitter and a timer are connected, wherein the temperature transmitter is used to detect the real-time heating temperature parameters of the ejector, and the timer is used to record the heating time corresponding to the ejector;

[0023] The controller is connected to a switching power supply via a switch button, and the switching power supply is used to supply power and heat the ejector so that the ejector is heated to a specified temperature;

[0024] A display screen is connected to the controller via a communication line, and the display screen is used to display temperature parameters and heating time parameters; an indicator light is connected to the controller, and the indicator light is used to display the working status of the test fixture.

[0025] The controller is connected to the temperature transmitter via an AD converter, the controller is connected to the display screen via a communication line, and the controller is connected to the indicator light via a relay.

[0026] The indicator lights include a green indicator light, a yellow indicator light and a red indicator light. The controller is connected to the green indicator light via a first relay, the controller is connected to the yellow indicator light via a second relay, and the controller is connected to the red indicator light via a third relay.

[0027] The controller is a PLC, whose model is S7-200. A plurality of pins are provided on the controller. The controller is connected to the AD converter via pin Q1.7, the controller is connected to the first relay via pin Q1.5, the controller is connected to the second relay via pin Q1.2, the controller is connected to the third relay via pin Q0.6, the controller is connected to the switch button via pin Q0.5, and the controller is connected to the timer via pin Q0.2.

[0028] The model of the AD converter is AD8551, and 8 pins are arranged on the AD converter. The AD converter is connected to the pin No. 15 of the controller via the pin No. 6, and the AD converter is connected to the temperature transmitter via the pin No. 3. The model of the temperature transmitter is SHT20.

[0029] The model of the timer is DS1302, and 8 pins are provided on the timer. Pin 6 and pin 7 of the timer are short-circuited, and a fourth resistor and a fourth capacitor are provided between pin 6 and pin 7. Pin 7 of the timer is connected to pin Q0.2 of the controller.

[0030] The working principle of an ejector heating function test fixture in the embodiment of the utility model is: based on the integrated control function of the controller, in conjunction with various types of electrical components and functional modules, the heating test temperature and heating test time of the ejector are accurately combined and detected, thereby improving the accuracy and test efficiency of the ejector heating function test, reducing the overall labor cost, thereby improving the overall production efficiency, and effectively avoiding the occurrence of defective or defective products.

[0031] The overall solution mainly includes a controller, to which a temperature transmitter and a timer are connected. The temperature transmitter is used to detect the real-time heating temperature parameters of the ejector, and the timer is used to record the corresponding heating time of the ejector. The controller is connected to a switching power supply via a switch button, and the switching power supply is used to supply power to heat the ejector so that the ejector is heated to a specified temperature. A display screen is connected to the controller via a communication line, and the display screen is used to display temperature parameters and heating time parameters. An indicator light is connected to the controller, and the indicator light is used to display the working status of the test fixture.

[0032] The core component controller is a PLC, and its model is S7-200. A plurality of pins are provided on the controller. The controller is connected to the AD converter through pin Q1.7, the controller is connected to the first relay through pin Q1.5, the controller is connected to the second relay through pin Q1.2, the controller is connected to the third relay through pin Q0.6, the controller is connected to the switch button through pin Q0.5, and the controller is connected to the timer through pin Q0.2, thereby forming an overall hardware circuit. The above-mentioned overall hardware circuit is relied upon to realize accurate and efficient detection of the ejector heating function, and the temperature parameters and heating time parameters are orderly combined to ensure the accuracy of the test results.

[0033] In actual use, first place the ejector high-pressure nozzle at room temperature for half an hour, and connect the test fixture. The operator presses the switch button, the test fixture starts to power the ejector, the timer starts timing, and the controller lights up the red indicator light through the second relay, and the yellow indicator light is always on; when the detection heating reaches 50°C, press the switch button to stop powering the ejector, the controller lights up the green indicator light through the first relay, the green indicator light is always on, the yellow light is off, the temperature transmitter detects the current temperature of the ejector, the timer stops timing, and the corresponding temperature parameters and heating time parameters are displayed on the display to complete the overall test.

[0034] Compared with the testing equipment in the existing technology, it has a higher degree of automation, and the testing efficiency and testing accuracy are also improved, which can effectively reduce the defective rate and scrap rate of the ejector.

[0035] Preferably, the model of the AD converter is AD8551, and 8 pins are provided on the AD converter. The AD converter is connected to the pin No. 15 of the controller through the pin No. 6, and the AD converter is connected to the temperature transmitter through the pin No. 3. The model of the temperature transmitter is SHT20, which can accurately detect the temperature parameters corresponding to the ejector tube and convert them into data types recognizable by the controller for transmission.

[0036] Preferably, the model of the timer is DS1302, and 8 pins are provided on the timer. Pin 6 and pin 7 of the timer are short-circuited, and a fourth resistor and a fourth capacitor are provided between pin 6 and pin 7. Pin 7 of the timer is connected to pin Q0.2 of the controller.

[0037] It should be noted that when an abnormal situation occurs, the red indicator light will be on and the staff will handle the abnormal situation to ensure the normal operation of the test fixture.

[0038] To sum up, an ejector heating function test fixture in an embodiment of the utility model is based on the integrated control function of the controller, cooperates with various types of electrical components and functional modules, accurately combines the heating test temperature and heating test time of the ejector, improves the accuracy and test efficiency of the ejector heating function test, reduces the overall labor cost, thereby improving the overall production efficiency, and effectively avoiding the occurrence of defective or defective products.

[0039] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0040] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A test fixture for the heating function of an ejector, characterized in that: It includes a controller, to which a temperature transmitter and a timer are connected, wherein the temperature transmitter is used to detect the real-time heating temperature parameter of the ejector, and the timer is used to record the heating time corresponding to the ejector; The controller is connected to a switching power supply via a switch button, and the switching power supply is used to supply power and heat the ejector so that the ejector is heated to a specified temperature; A display screen is connected to the controller via a communication line, and the display screen is used to display temperature parameters and heating time parameters; an indicator light is connected to the controller, and the indicator light is used to display the working status of the test fixture.

2. The ejector heating function test fixture according to claim 1, characterized in that: The controller is connected to the temperature transmitter via an AD converter, the controller is connected to the display screen via a communication line, and the controller is connected to the indicator light via a relay.

3. The ejector heating function test fixture according to claim 2, characterized in that: The indicator lights include a green indicator light, a yellow indicator light and a red indicator light. The controller is connected to the green indicator light via a first relay, the controller is connected to the yellow indicator light via a second relay, and the controller is connected to the red indicator light via a third relay.

4. According to claim 3, the ejector heating function test fixture is characterized by: The controller is a PLC, whose model is S7-200. A plurality of pins are provided on the controller. The controller is connected to the AD converter via pin Q1.7, the controller is connected to the first relay via pin Q1.5, the controller is connected to the second relay via pin Q1.2, the controller is connected to the third relay via pin Q0.6, the controller is connected to the switch button via pin Q0.5, and the controller is connected to the timer via pin Q0.

2.

5. According to claim 4, the ejector heating function test fixture is characterized by: The model of the AD converter is AD8551, and 8 pins are arranged on the AD converter. The AD converter is connected to the pin No. 15 of the controller via the pin No. 6, and the AD converter is connected to the temperature transmitter via the pin No.

3. The model of the temperature transmitter is SHT20.

6. The ejector heating function test fixture according to claim 4, characterized in that: The model of the timer is DS1302, and 8 pins are provided on the timer. Pin 6 and pin 7 of the timer are short-circuited, and a fourth resistor and a fourth capacitor are provided between pin 6 and pin 7. Pin 7 of the timer is connected to pin Q0.2 of the controller.

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