Engine automatic start-stop test device

Abstract

The utility model provides an engine automatic start-stop test device in the technical field of engines. The engine automatic start-stop test device comprises a commercial power input terminal J1, a commercial power input terminal J2, a circuit breaker QF1, an operation switch QF2, a time relay set, a floating charger F1, an intermediate relay set, a motor protection switch QS1, an under-voltage protection module U1 and a test storage battery P1. The J1, the pin 1 of the QF1, the negative electrode of the input end of the F1, the pin SB1 of the QF2, the time relay group, the positive electrode of the input end of the F1, the pin 2 of the QF1 and the J2 are sequentially connected in series; the positive electrode of the output end of the F1 is connected with the pin SB2 of the QF2, the positive electrode of the input end of the U1 and the positive electrode of the output end of the U1, and the negative electrode of the output end is connected with the negative electrode of the input end of the U1; the output end cathode of the U1 is connected with the intermediate relay group, and the sampling end is connected in parallel with the two ends of the test storage battery P1. One end of the QS1 is connected with a pin SB2 of the QF2 and the intermediate relay set, and the other end of the QS1 is connected with the intermediate relay set. The engine start-stop test device has the advantage that the efficiency of the engine start-stop test is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, especially points out a kind of engine automatic start-stop test device. BACKGROUND

[0002] Generators are mechanical devices that convert mechanical energy into electrical energy. They are driven by water turbines, steam turbines, diesel engines or other power machinery. They convert the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy, and then convert it into electrical energy. Generators have a wide range of applications in industrial and agricultural production, national defense, science and technology and daily life. There are many forms of generators, but their working principles are based on the electromagnetic induction law and electromagnetic force law.

[0003] During the research and development and production process of generators, it is necessary to conduct start-stop tests to test the normality of the functions of the generators and the durability of the equipment. For the start-stop test of the generator, the traditional method is to manually control the key switch. In the case of requiring a large number of tests, a dedicated person must be present to operate, which is very time-consuming and inefficient.

[0004] Therefore, how to provide an engine automatic start-stop test device to improve the efficiency of engine start-stop test has become a technical problem to be solved. SUMMARY

[0005] The utility model solves the technical problem, to provide a kind of engine automatic start-stop test device, to improve the efficiency of engine start-stop test.

[0006] The utility model is realized as follows: a kind of engine automatic start-stop test device, including a commercial power input terminal J1, a commercial power input terminal J2, a circuit breaker QF1, a running switch QF2, a time relay group, a float charge F1, an intermediate relay group, a motor protection switch QS1, an under-voltage protection module U1 and a test battery P1;

[0007] The pin 1 of commercial power input terminal J1, circuit breaker QF1, the input end negative pole of float charge F1, the pin SB1 of running switch QF2, time relay group, the input end positive pole of float charge F1, the pin 2 of circuit breaker QF1 and commercial power input terminal J2 are sequentially connected in series;

[0008] The output end positive pole of float charge F1 is connected with the pin SB2 of running switch QF2, the input end positive pole of under-voltage protection module U1 and the output end positive pole of under-voltage protection module U1 respectively, and the output end negative pole is connected with the input end negative pole of under-voltage protection module U1 and grounded;

[0009] The output negative pole of the under-voltage protection module U1 is connected with the intermediate relay group, and the sampling positive pole and the sampling negative pole are connected in parallel across the test battery P1.

[0010] One end of the motor protection switch QS1 is connected with the pin SB2 of the operation switch QF2 and the intermediate relay group, and the other end is connected with the intermediate relay group.

[0011] Further, a voltmeter V1 is further included; one end of the voltmeter V1 is connected with the output positive pole of the float charging F1, and the other end is connected with the output negative pole of the float charging F1.

[0012] Further, the time relay group includes a time relay KT1, a time relay KT2 and a time relay KT3.

[0013] The time relay KT1, the time relay KT2 and the time relay KT3 are connected in parallel, one end of which is connected with the pin SB1 of the operation switch QF2, and the other end is connected with the pin 2 of the circuit breaker QF1.

[0014] Further, the intermediate relay group includes an intermediate relay KA1, an intermediate relay KA2, an intermediate relay KA3 and an intermediate relay KA4.

[0015] The intermediate relay KA1 and the intermediate relay KA2 are connected in parallel, one end of which is connected with the pin SB2 of the operation switch QF2, and the other end is connected with the output negative pole of the float charging F1; one end of the intermediate relay KA4 is connected with one end of the intermediate relay KA3, and the other end is connected with the output negative pole of the under-voltage protection module U1; the other end of the intermediate relay KA3 is connected with the motor protection switch QS1.

[0016] The utility model has the advantages of:

[0017] The start-stop test device includes mains input terminal J1, mains input terminal J2, circuit breaker QF1, running switch QF2, time relay group, float charge F1, intermediate relay group, motor protection switch QS1, undervoltage protection module U1, and test battery P1. The time relay group includes time relays KT1, KT2, and KT3; the intermediate relay group includes intermediate relays KA1, KA2, KA3, and KA4. Time relay KT1 is used to set the running time, and time relay KT2 is used to set... The stop time is set, the time relay KT3 is used to set the start time, the intermediate relay KA1 is used for fuel output control, the intermediate relay KA2 is used for start output control, the intermediate relay KA3 is used for motor protection, and the intermediate relay KA4 is used for battery undervoltage protection. During the start-stop test, only the mains input terminals J1 and J2 need to be connected to the mains power, and the intermediate relay group and the motor protection switch QS1 are connected to the engine. The engine start-stop test can be automatically performed through the time relay group, without the need for manual key switch control as in the past, thus greatly improving the efficiency of engine start-stop test. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a circuit diagram of an automatic engine start-stop test device according to the present invention. Detailed Implementation

[0020] This utility model provides an automatic engine start-stop test device, which solves the technical problem that in the prior art, when performing start-stop tests on generators, manual control of a key switch is required, which is labor-intensive and inefficient when a large number of tests are required. This device greatly improves the efficiency of engine start-stop testing.

[0021] The technical solution in this embodiment of the utility model is to solve the above-mentioned problems. The overall idea is as follows: A time relay group including time relays KT1, KT2, and KT3 is set; an intermediate relay group including intermediate relays KA1, KA2, KA3, and KA4 is also set. Time relay KT1 is used to set the running time, time relay KT2 is used to set the stop time, time relay KT3 is used to set the start time, intermediate relay KA1 is used for fuel output control, intermediate relay KA2 is used for start output control, intermediate relay KA3 is used for motor protection, and intermediate relay KA4 is used for battery undervoltage protection. During start-stop testing, the intermediate relay group and the motor protection switch QS1 are connected to the engine. The engine start-stop test can be automatically performed through the time relay group to improve the efficiency of the engine start-stop test.

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] Please refer to Figure 1 As shown, a preferred embodiment of the automatic start-stop test device for an engine according to this utility model includes a mains power input terminal J1, a mains power input terminal J2, a circuit breaker QF1, a running switch QF2, a time relay group, a float charge F1, an intermediate relay group, a motor protection switch QS1, an undervoltage protection module U1, and a test battery P1. The mains power input terminals J1 and J2 are used for AC 220V mains power input. The circuit breaker QF1 is used to switch the mains power on and off. The running switch QF2 has pins SB1 and SB2 for starting and stopping the test device. The float charge F1 is used for supplying DC power to the circuit and charging the external battery. The motor protection switch QS1 is used to force the motor to stop working when the voltage of the engine's flywheel generator reaches a certain value. The undervoltage protection module U1 is used to protect and stop working when the voltage of the test battery P1 is lower than a set value.

[0024] The mains input terminal J1, pin 1 of circuit breaker QF1, negative input terminal of float charge F1, pin SB1 of running switch QF2, time relay group, positive input terminal of float charge F1, pin 2 of circuit breaker QF1 and mains input terminal J2 are connected in series.

[0025] The positive terminal of the float charge F1 is connected to pin SB2 of the operation switch QF2, the positive terminal of the input of the undervoltage protection module U1, and the positive terminal of the output of the overvoltage protection module U1, respectively. The negative terminal of the float charge F1 is connected to the negative terminal of the input of the undervoltage protection module U1 and grounded.

[0026] The negative terminal of the undervoltage protection module U1 is connected to the intermediate relay group, and the positive and negative terminals of the sampling terminal are connected in parallel across the two ends of the test battery P1.

[0027] One end of the motor protection switch QS1 is connected to pin SB2 of the running switch QF2 and the intermediate relay group, and the other end is connected to the intermediate relay group.

[0028] It also includes a voltmeter V1; one end of the voltmeter V1 is connected to the positive terminal of the float charge F1 output, and the other end is connected to the negative terminal of the float charge F1 output. The voltmeter V1 is used to display the output voltage of the float charge F1.

[0029] It also includes a counter connected to the intermediate relay group to count the number of starts.

[0030] The time relay group includes a time relay KT1, a time relay KT2, and a time relay KT3; the time relay KT1 is used to set the running time, the time relay KT2 is used to set the stop time, and the time relay KT3 is used to set the start time.

[0031] The time relays KT1, KT2, and KT3 are connected in parallel, with one end connected to pin SB1 of the running switch QF2 and the other end connected to pin 2 of the circuit breaker QF1.

[0032] The intermediate relay group includes an intermediate relay KA1, an intermediate relay KA2, an intermediate relay KA3, and an intermediate relay KA4; the intermediate relay KA1 is used for fuel output control, the intermediate relay KA2 is used for start-up output control, the intermediate relay KA3 is used for motor protection, and the intermediate relay KA4 is used for battery undervoltage protection.

[0033] Each of the time relays KT1, KT2, KT3, intermediate relays KA1, KA2, KA3, and KA4 is equipped with a coil and a switching quantity (contact), that is, the switching quantity is turned on and off through the coil; the positive terminal of the test battery P1 is connected to the switching quantity of intermediate relay KA1 and intermediate relay KA2.

[0034] After intermediate relays KA1 and KA2 are connected in parallel, one end is connected to pin SB2 of running switch QF2, and the other end is connected to the negative output terminal of float charge F1; one end of intermediate relay KA4 is connected to one end of intermediate relay KA3, and the other end is connected to the negative output terminal of undervoltage protection module U1; the other end of intermediate relay KA3 is connected to motor protection switch QS1.

[0035] Working principle of this utility model:

[0036] Connect the mains power input terminals J1 and J2 to the mains power supply, set the time parameters of the time relay group and the undervoltage protection value of the test battery P1, then connect the test device to the engine starter motor, flywheel generator, and battery, and turn the operation switch QF2 to the operation position. The test device will start automatically performing a cycle of starting and stopping according to the set time parameters and automatically count. When the battery voltage of the test battery P1 is lower than the undervoltage protection value, the undervoltage protection module U1 controls the test device to stop working.

[0037] In summary, the advantages of this utility model are as follows:

[0038] The start-stop test device includes mains input terminal J1, mains input terminal J2, circuit breaker QF1, running switch QF2, time relay group, float charge F1, intermediate relay group, motor protection switch QS1, undervoltage protection module U1, and test battery P1. The time relay group includes time relays KT1, KT2, and KT3; the intermediate relay group includes intermediate relays KA1, KA2, KA3, and KA4. Time relay KT1 is used to set the running time, and time relay KT2 is used to set... The stop time is set, the time relay KT3 is used to set the start time, the intermediate relay KA1 is used for fuel output control, the intermediate relay KA2 is used for start output control, the intermediate relay KA3 is used for motor protection, and the intermediate relay KA4 is used for battery undervoltage protection. During the start-stop test, only the mains input terminals J1 and J2 need to be connected to the mains power, and the intermediate relay group and the motor protection switch QS1 are connected to the engine. The engine start-stop test can be automatically performed through the time relay group, without the need for manual key switch control as in the past, thus greatly improving the efficiency of engine start-stop test.

[0039] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An engine automatic stop-start test device, characterized by: The utility model relates to a motor protection circuit, which comprises a utility input terminal J1, a utility input terminal J2, a circuit breaker QF1, a running switch QF2, a time relay group, a float charging F1, an intermediate relay group, a motor protection switch QS1, an under-voltage protection module U1 and a test battery P1. The utility input terminal J1, the pin 1 of the circuit breaker QF1, the negative input terminal of the float charging F1, the pin SB1 of the running switch QF2, the time relay group, the positive input terminal of the float charging F1, the pin 2 of the circuit breaker QF1 and the utility input terminal J2 are connected in series. The positive output terminal of the float charging F1 is connected with the pin SB2 of the running switch QF2, the positive input terminal of the under-voltage protection module U1 and the positive output terminal of the under-voltage protection module U1 respectively, and the negative output terminal is connected with the negative input terminal of the under-voltage protection module U1 and grounded. The negative output terminal of the under-voltage protection module U1 is connected with the intermediate relay group, and the positive sampling terminal and the negative sampling terminal are connected in parallel across the test battery P1. One end of the motor protection switch QS1 is connected with the pin SB2 of the running switch QF2 and the intermediate relay group, and the other end is connected with the intermediate relay group.

2. An engine automatic stop-start test device as claimed in claim 1, characterised in that: The voltage table V1 is further included, one end of which is connected with the positive output terminal of the float charging F1, and the other end is connected with the negative output terminal of the float charging F1.

3. An engine automatic stop-start test device as claimed in claim 1, characterised in that: The time relay group comprises a time relay KT1, a time relay KT2 and a time relay KT3. The time relay KT1, the time relay KT2 and the time relay KT3 are connected in parallel, one end of which is connected with the pin SB1 of the running switch QF2, and the other end is connected with the pin 2 of the circuit breaker QF1.

4. An engine automatic stop-start test device as claimed in claim 1, characterized in that: The intermediate relay group comprises an intermediate relay KA1, an intermediate relay KA2, an intermediate relay KA3 and an intermediate relay KA4. The intermediate relay KA1 and the intermediate relay KA2 are connected in parallel, one end of which is connected with the pin SB2 of the running switch QF2, and the other end is connected with the negative output terminal of the float charging F1; one end of the intermediate relay KA4 is connected with one end of the intermediate relay KA3, and the other end is connected with the negative output terminal of the under-voltage protection module U1; the other end of the intermediate relay KA3 is connected with the motor protection switch QS1.

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