Portable time relay checking circuit, device and method

Abstract

The invention relates to the technical field of relay verification, in particular to a portable time relay verification circuit, device and method. Comprising a timer, a first intermediate relay, a second intermediate relay, a first selection switch, a second selection switch, a third selection switch, a direct current voltmeter, a power switch, a start button, a reset button, a power indicating lamp and a power module. Through different combinations of the three selection switches, verification of eight different types of time relays is realized by using the two intermediate relays, the structure is simple, the integration is good, the cost is low, and the verification capability of the time relay during the ship navigation period is improved.

Description

Technical Field

[0001] The present application relates to the technical field of relay calibration, and in particular to a portable time relay calibration circuit, device and method. Background Art

[0002] Various types of time relays are used in some electrical control systems of ships to realize the logic control function of certain systems or electrical equipment. During the daily inspection, maintenance and repair of electrical control systems, special instruments are required to check and calibrate the delay performance of time relays. Most time relay calibration devices on the market currently only calibrate a specific type of time relay, and their integration is poor; a few multifunctional inspection devices use the principle of single-chip microcomputers to realize the calibration function of various types of time relays, which are expensive and have poor maintainability. If the calibration device fails while the ship is at sea, it is not easy to repair. Summary of the invention

[0003] Based on this, it is necessary to provide a portable time relay calibration circuit, device and method to address the above-mentioned background technical problems. Compared with traditional time relay calibration devices, they can improve maintainability while having high integration, and have a simple structure and are easy to carry.

[0004] To achieve the above-mentioned purpose, the present invention provides a portable time relay calibration circuit, including a timer, a first intermediate relay, a second intermediate relay, a first selection switch, a second selection switch, a third selection switch, a DC voltmeter, a power switch, a start button, a reset button, a power indicator light and a power module.

[0005] The signal line of the timer is connected to the normally open contact of the first intermediate relay and the third selection switch, and the power supply line of the timer is connected to the power input terminal.

[0006] The contact terminals of the first intermediate relay are connected to the first selection switch, the second selection switch, and the third selection switch, and the two ends of the coil of the first intermediate relay are connected to the power input terminal through the start button and the stop button respectively; the normally open contact terminal of the first intermediate relay is connected in parallel with the start button.

[0007] The contact terminals of the second intermediate relay are connected to the second selection switch and the third selection switch; the two ends of the coil of the second intermediate relay are connected to the coil of the time relay to be checked and the power supply.

[0008] The first selection switch includes an AC gear and a DC gear; when the first selection switch selects the AC gear, the time relay coil to be checked is connected to the power input end; when the first selection switch selects the DC gear, the time relay coil to be checked is connected to the power module output end.

[0009] The second selection switch includes a power-on delay position and a power-off delay position.

[0010] The third selection switch includes a normally closed contact position and a normally open contact position.

[0011] When the second selection switch selects the power-on delay position, the time relay coil to be verified is connected to the normally open contact terminal of the first intermediate relay, the normally open contact terminal of the second intermediate relay is connected to the normally closed contact position of the third selection switch, and the normally closed contact terminal of the second intermediate relay is connected to the normally open contact position of the third selection switch.

[0012] When the second selection switch selects the power-off delay position, the time relay coil to be verified is connected to the normally closed contact terminal of the first intermediate relay, the normally closed contact terminal of the second intermediate relay is connected to the normally closed contact position of the third selection switch, and the normally open contact terminal of the second intermediate relay is connected to the normally open contact position of the third selection switch.

[0013] The power module input end is connected to the power input end, and the power module output end is connected to the DC gear of the first selection switch, so as to supply DC power to the time relay coil to be checked.

[0014] The DC voltmeter input terminal is connected to the power input terminal, and the voltage signal line of the DC voltmeter is connected to the DC gear of the first selection switch, which is used to measure the voltage at both ends of the time relay coil to be checked.

[0015] The power indicator light is connected to the power input terminal and is used to indicate the switch state of the power input.

[0016] Optionally, the portable time relay verification circuit also includes a DC power indicator light, and the DC power indicator light is connected to the DC position of the first selection switch.

[0017] Optionally, the portable time relay verification circuit further includes an emergency stop button, which is connected in series to the output end of the power switch.

[0018] In addition, to achieve the above-mentioned purpose, the present invention also proposes a portable time relay calibration device, which includes the portable time relay calibration circuit described above.

[0019] In addition, to achieve the above object, the present invention also proposes a portable time relay verification method, the portable time relay verification method is based on the above portable time relay verification circuit, and the portable time relay verification method includes several working modes, namely:

[0020] Verify the AC power-on delay relay with normally closed slow-release contacts: After correctly connecting the time relay to be tested, set the first selection switch to the AC position, the second selection switch to the power-on delay position, and the third selection switch to the normally closed contact position; turn on the power switch to turn on the power, the power indicator light turns on, the second intermediate relay coil is energized, the second intermediate relay normally open contacts are closed, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be verified is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be verified completes the delay action, the normally closed slow-release contact is disconnected, the second intermediate relay coil loses power, the second intermediate relay normally open contacts are disconnected, the timing signal of the timer is interrupted, the timing is stopped and the action time of the time relay to be verified is displayed; press the reset button to complete the verification.

[0021] Verify the AC power-on delay relay with normally open slow-suction contacts: After correctly connecting the time relay to be tested, set the first selection switch to the AC position, the second selection switch to the power-on delay position, and the third selection switch to the normally open contact position; turn on the power switch to turn on the power, the power indicator light turns on, the second intermediate relay coil loses power, the second intermediate relay normally closed contacts close, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be tested is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action and the normally open slow-suction contacts are closed, the coil of the second intermediate relay is energized, the normally closed contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; press the reset button to complete the verification.

[0022] Verify the AC power-off delay relay with normally closed slow-suction contacts: set the first selection switch to the AC position, the second selection switch to the power-off delay position, and the third selection switch to the normally closed contact position; turn on the power switch to connect the power, the power indicator light comes on, the coil of the time relay to be tested is energized, the coil of the second intermediate relay is de-energized, the normally closed contacts of the second intermediate relay are closed, and the timer enters the ready state; press the start button, the normally open contacts of the first intermediate relay are closed, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action and the normally closed slow-suction contacts are closed, the coil of the second intermediate relay is energized, the normally closed contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing stops, and the action time of the time relay to be tested is displayed; press the reset button to complete the verification.

[0023] Verify the AC power-off delay relay with normally open slow-release contacts: After correctly connecting the time relay to be tested, set the first selection switch to the AC position, the second selection switch to the power-off delay position, and the third selection switch to the normally open contact position; turn on the power switch to turn on the power, the power indicator light comes on, the coil of the time relay to be tested is energized, the coil of the second intermediate relay is energized, the normally open contact of the second intermediate relay is closed, and the timer enters the ready state; press the start button, the normally open contact of the first intermediate relay is closed, the timing signal of the timer is connected, and the timer starts timing; the normally closed contact of the first intermediate relay is disconnected, the coil of the time relay to be tested loses power, and enters the delay action process; when the time relay to be tested completes the delay action, the normally open slow-release contact is disconnected, the coil of the second intermediate relay loses power, the normally open contact of the second intermediate relay is disconnected, the timing signal of the timer is interrupted, the timing stops and the action time of the time relay to be tested is displayed; press the reset button to complete the verification.

[0024] Verify the DC power-on delay relay with normally closed slow-release contacts: after correctly connecting the time relay to be tested, set the first selection switch to the DC position, the second selection switch to the power-on delay position, and the third selection switch to the normally closed contact position; turn on the power switch to turn on the power, the power indicator light turns on, adjust the output voltage of the power module to the required value, and then correctly connect the time relay to be tested; the second intermediate relay coil is energized, the normally open contacts of the second intermediate relay are closed, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be tested is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action, the normally closed slow-release contact is disconnected, the coil of the second intermediate relay loses power, the normally open contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; press the reset button to complete the verification.

[0025] Verify the DC power-on delay relay with normally open slow-suction contacts: set the first selection switch to the DC position, the second selection switch to the power-on delay position, and the third selection switch to the normally open contact position; turn on the power switch to turn on the power, the power indicator light comes on, adjust the output voltage of the power module to the required value, and correctly connect the time relay to be tested; the second intermediate relay coil loses power, the normally closed contacts of the second intermediate relay close, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be tested is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action and the normally open slow-suction contacts are closed, the coil of the second intermediate relay is energized, the normally closed contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; press the reset button to complete the verification.

[0026] Verify the DC power-off delay relay with normally closed slow-suction contacts: set the first selection switch to the DC position, the second selection switch to the power-off delay position, and the third selection switch to the normally closed contact position; turn on the power, the power indicator light turns on, adjust the output voltage of the power module to the required value, and correctly connect the time relay to be tested; the coil of the time relay to be tested is energized, the coil of the second intermediate relay is de-energized, the normally closed contact of the second intermediate relay is closed, and the timer enters the ready state; press the start button, the normally open contact of the first intermediate relay is closed, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action and the normally closed slow-suction contacts are closed, the coil of the second intermediate relay is energized, the normally closed contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; press the reset button to complete the verification.

[0027] Verify the DC power-off delay relay with normally open slow-release contacts: set the first selection switch to the DC position, the second selection switch to the power-off delay position, and the third selection switch to the normally open contact position; turn on the power, the power indicator light turns on, adjust the output voltage of the power module to the required value, and correctly connect the time relay to be tested; the coil of the time relay to be tested is energized, the coil of the second intermediate relay is energized, the normally open contact of the second intermediate relay is closed, and the timer enters the ready state; press the start button, the normally open contact of the first intermediate relay is closed, the timing signal of the timer is connected, and the timer starts timing; the normally closed contact of the first intermediate relay is disconnected, the coil of the time relay to be tested loses power, and enters the delay action process; when the time relay to be tested completes the delay action, the normally open slow-release contact is disconnected, the coil of the second intermediate relay loses power, the normally open contact of the second intermediate relay is disconnected, the timing signal of the timer is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; press the reset button to complete the verification.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The portable time relay calibration circuit in the embodiment of the present invention realizes the calibration of eight different types of time relays by using two intermediate relays through different combinations of three selection switches. It has a simple structure, good integration, and low cost, and improves the calibration capability of the time relay during the navigation of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0031] Figure 1 A circuit schematic diagram of a specific example of a portable time relay verification circuit in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of a specific example of a portable time relay verification circuit in an embodiment of the present invention;

[0033] Figure 3 The figure is a front panel diagram of a specific example of a portable time relay calibration device in an embodiment of the present invention.

[0034] Reference numerals:

[0035] 21-first selection switch SA2, 22-second selection switch SA3, 23-third selection switch SA4, 31-first intermediate relay K1, 32-second intermediate relay K2, 40-power module TB, 41-start button SB1, 42-reset button SB2, 43-emergency stop button SB3, 44-power indicator light HL1, 45-DC power indicator light HL2, 46-DC voltmeter, 50-timer. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. It should be noted that in the description of the present application, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] The "multiple" in the embodiments of the present application refers to two or more. The "connection" in the embodiments of the present application refers to various connection modes such as direct connection or indirect connection to achieve the connection between devices, and the embodiments of the present application do not make any limitation on this.

[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] The embodiments of the present application are described below with reference to the accompanying drawings.

[0040] See also Figure 1 and Figure 2 , Figure 1 is a circuit schematic diagram of a specific example of a portable time relay verification circuit provided by the present application, Figure 2 The present application provides a schematic block diagram of a specific example of a portable time relay verification circuit. The verification circuit comprises a timer (50), a first intermediate relay K1 (31), a second intermediate relay K2 (32), a first selection switch SA2 (21), a second selection switch SA3 (22), a third selection switch SA4 (23), a DC voltmeter (46), a power switch SA1 (20), a start button SB1 (41), a reset button SB2 (42) and a power module TB (40).

[0041] The signal line of the timer (50) is connected to the normally open contact of the first intermediate relay K1 (31) and the third selection switch SA4 (23), and the power supply line of the timer (50) is connected to the power input terminal.

[0042] The contact terminals of the first intermediate relay K1 (31) are connected to the first selection switch SA2 (21), the second selection switch SA3 (22), and the third selection switch SA4 (23); the two ends of the coil of the first intermediate relay K1 (31) are connected to the power input terminal via the start button SB1 (41) and the stop button, respectively; and the normally open contact terminal of the first intermediate relay K1 (31) is connected in parallel with the start button SB1 (41).

[0043] The contact terminals of the second intermediate relay K2 (32) are connected to the second selection switch SA3 (22) and the third selection switch SA4 (23); the two ends of the coil of the second intermediate relay K2 (32) are connected to the coil of the time relay to be checked and the power supply.

[0044] The first selection switch SA2 (21) comprises an AC gear and a DC gear. When the first selection switch SA2 (21) selects the AC gear, the time relay coil to be checked is connected to the power input end. When the first selection switch SA2 (21) selects the DC gear, the time relay coil to be checked is connected to the output end of the power module TB (40).

[0045] The second selection switch SA3 (22) includes a power-on delay position and a power-off delay position.

[0046] The third selection switch SA4 (23) includes a normally closed contact position and a normally open contact position.

[0047] When the second selection switch SA3 (22) selects the power-on delay position, the time relay coil to be verified is connected to the normally open contact terminal of the first intermediate relay K1 (31), the normally open contact terminal of the second intermediate relay K2 (32) is connected to the normally closed contact position of the third selection switch SA4 (23), and the normally closed contact terminal of the second intermediate relay K2 (32) is connected to the normally open contact position of the third selection switch SA4 (23).

[0048] When the second selection switch SA3 (22) selects the power-off delay position, the time relay coil to be verified is connected to the normally closed contact terminal of the first intermediate relay K1 (31), the normally closed contact terminal of the second intermediate relay K2 (32) is connected to the normally closed contact position of the third selection switch SA4 (23), and the normally open contact terminal of the second intermediate relay K2 (32) is connected to the normally open contact position of the third selection switch SA4 (23).

[0049] The input end of the power module TB (40) is connected to the power input end, and the output end of the power module TB (40) is connected to the DC gear of the first selection switch SA2 (21) for supplying DC power to the coil of the time relay to be checked.

[0050] The DC voltmeter (46) input terminal is connected to the power supply input terminal, and the voltage signal line of the DC voltmeter (46) is connected to the DC gear of the first selection switch SA2 (21), and is used to measure the voltage at both ends of the coil of the time relay to be checked.

[0051] The power indicator light HL1 (44) is connected to the power input terminal and is used to indicate the switch state of the power input.

[0052] Optionally, the portable time relay verification circuit further comprises a DC power indicator light HL2 (45), wherein the DC power indicator light HL2 (45) is connected to the DC position of the first selection switch SA2 (21).

[0053] Optionally, the portable time relay verification circuit further comprises an emergency stop button SB3 (43), wherein the emergency stop button SB3 (43) is connected in series to the output end of the power switch SA1 (20).

[0054] like Figure 3 As shown, to achieve the above purpose, the present invention also proposes a portable time relay verification device, which includes the portable time relay verification circuit described above. The device implements the arrangement of various switches, indicator lights, and instruments based on the principle of being convenient for operation, and is provided with corresponding prompt lights and warning lights.

[0055] To achieve the above object, the present invention also proposes a portable time relay verification method, which is based on the portable time relay verification circuit. The portable time relay verification method has several working modes according to different types of time relays, which are:

[0056] Verify the AC power-on delay relay with normally closed slow-release contact: after the time relay to be tested is correctly connected, the first selection switch SA2 (21) is set to the AC gear, the second selection switch SA3 (22) is set to the power-on delay gear, and the third selection switch SA4 (23) is set to the normally closed contact gear; turn on the power switch SA1 (20) to connect the power, the power indicator HL1 (44) lights up, the coil of the second intermediate relay K2 (32) is energized, the normally open contacts of the second intermediate relay K2 (32) are closed, and the timer (50) enters the ready state; press the start button SB1 (41), the first intermediate relay K1 (31) is energized, and the three groups of normally open contacts of the first intermediate relay K1 (31) are closed, firstly, the self-protection of the start button SB1 (41) is realized; secondly, the coil of the time relay to be tested is powered, and the time relay to be tested enters the delay action process; thirdly, the timing signal of the timer (50) is connected, and the timer (50) starts timing. The coil of the time relay to be checked is energized, the timing signal of the timer (50) is connected, and the timer (50) starts timing; when the time relay to be checked completes the delayed action, the normally closed slow-release contact is disconnected, the coil of the second intermediate relay K2 (32) loses power, the normally open contact of the second intermediate relay K2 (32) is disconnected, the timing signal of the timer (50) is interrupted, the timing is stopped and the action time of the time relay to be checked is displayed; the reset button SB2 (42) is pressed to complete the verification.

[0057] The AC power-on delay relay with normally open slow-draw contact is tested: after the time relay to be tested is correctly connected, the first selection switch SA2 (21) is set to the AC gear, the second selection switch SA3 (22) is set to the power-on delay gear, and the third selection switch SA4 (23) is set to the normally open contact gear; the power switch SA1 (20) is turned on to connect the power, the power indicator HL1 (44) is lit, the coil of the second intermediate relay K2 (32) is de-energized, the normally closed contacts of the second intermediate relay K2 (32) are closed, and the timer (50) enters the ready state; the start button SB1 (41) is pressed, the first intermediate relay K1 (31) is energized, and the three groups of normally open contacts of the first intermediate relay K1 (31) are closed, firstly, the self-protection of the start button SB1 (41) is realized; secondly, the coil of the time relay to be tested is powered, and the time relay to be tested enters the delay action process; thirdly, the timing signal of the timer (50) is connected, and the timer (50) starts timing. The coil of the time relay to be checked is energized, the timing signal of the timer (50) is connected, and the timer (50) starts timing; when the time relay to be checked completes the delayed action and the normally open slow-acting contact is closed, the coil of the second intermediate relay K2 (32) is energized, the normally closed contact of the second intermediate relay K2 (32) is disconnected, the timing signal of the timer (50) is interrupted, the timing is stopped and the action time of the time relay to be checked is displayed; the reset button SB2 (42) is pressed to complete the verification.

[0058] To test the AC power-off delay relay with normally closed slow-suction contact: set the first selection switch SA2 (21) to the AC position, the second selection switch SA3 (22) to the power-off delay position, and the third selection switch SA4 (23) to the normally closed contact position; turn on the power supply, the power indicator HL1 (44) lights up, the coil of the test time relay is energized, the coil of the second intermediate relay K2 (32) is de-energized, the normally closed contact of the second intermediate relay K2 (32) is closed, and the timer (50) enters the ready state; press the start button Press button SB1 (41), the normally open contact of the first intermediate relay K1 (31) is closed, the timing signal of the timer (50) is connected, and the timer (50) starts timing; when the time relay to be tested completes the delayed action and the normally closed slow-acting contact is attracted, the coil of the second intermediate relay K2 (32) is energized, the normally closed contact of the second intermediate relay K2 (32) is disconnected, the timing signal of the timer (50) is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; press the reset button SB2 (42) to complete the verification.

[0059] Verify the AC power-off delay relay with normally open slow-release contacts: After correctly connecting the time relay to be tested, set the first selection switch SA2 (21) to the AC position, the second selection switch SA3 (22) to the power-off delay position, and the third selection switch SA4 (23) to the normally open contact position; turn on the power switch SA1 (20) to connect the power, the power indicator HL1 (44) lights up, the coil of the time relay to be tested is energized, the coil of the second intermediate relay K2 (32) is energized, and the normally open contact of the second intermediate relay K2 (32) is closed. The timer (50) enters the ready state; the start button SB1 (41) is pressed, the normally open contact of the first intermediate relay K1 (31) is closed, the timing signal of the timer (50) is connected, and the timer (50) starts timing; the normally closed contact of the first intermediate relay K1 (31) is opened, the coil of the time relay to be tested loses power, and enters the delayed action process; when the time relay to be tested completes the delayed action, the normally open slow-release contact is opened, the coil of the second intermediate relay K2 (32) loses power, the normally open contact of the second intermediate relay K2 (32) is opened, the timing signal of the timer (50) is interrupted, the timing stops, and the action time of the time relay to be tested is displayed; the reset button SB2 (42) is pressed to complete the verification.

[0060] Verify the DC power-on delay relay with normally closed slow-release contact: after correctly connecting the time relay to be tested, set the first selection switch SA2 (21) to the DC position, the second selection switch SA3 (22) to the power-on delay position, and the third selection switch SA4 (23) to the normally closed contact position; turn on the power switch SA1 (20) to turn on the power, the power indicator HL1 (44) lights up, adjust the output voltage of the power module TB (40) to the required value, and correctly connect the time relay to be tested; the coil of the second intermediate relay K2 (32) is energized, the normally open contact of the second intermediate relay K2 (32) is closed, and the timer (50) is started. Enter the ready state; press the start button SB1 (41), the first intermediate relay K1 (31) is energized, the three groups of normally open contacts of the first intermediate relay K1 (31) are closed, the coil of the time relay to be checked is energized, the timing signal of the timer (50) is connected, and the timer (50) starts timing; when the time relay to be checked completes the delayed action, the normally closed slow-release contact is disconnected, the coil of the second intermediate relay K2 (32) loses power, the normally open contact of the second intermediate relay K2 (32) is disconnected, the timing signal of the timer (50) is interrupted, the timing is stopped and the action time of the time relay to be checked is displayed; press the reset button SB2 (42) to complete the verification.

[0061] The DC power-on delay relay with normally open slow-suction contact is tested: the first selection switch SA2 (21) is set to the DC position, the second selection switch SA3 (22) is set to the power-on delay position, and the third selection switch SA4 (23) is set to the normally open contact position; the power switch SA1 (20) is turned on to connect the power, the power indicator HL1 (44) is lit, and after adjusting the output voltage of the power module TB (40) to the required value, the time relay to be tested is correctly connected; the coil of the second intermediate relay K2 (32) is de-energized, the normally closed contact of the second intermediate relay K2 (32) is closed, and the timer (50) enters the ready state; press The start button SB1 (41) is pressed, the first intermediate relay K1 (31) is energized, the three groups of normally open contacts of the first intermediate relay K1 (31) are closed, the coil of the time relay to be tested is energized, the timing signal of the timer (50) is connected, and the timer (50) starts timing; when the time relay to be tested completes the delayed action and the normally open slow-acting contacts are closed, the coil of the second intermediate relay K2 (32) is energized, the normally closed contacts of the second intermediate relay K2 (32) are disconnected, the timing signal of the timer (50) is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; the reset button SB2 (42) is pressed to complete the verification.

[0062] The DC power-off delay relay with normally closed slow-suction contact is tested: the first selection switch SA2 (21) is set to the DC position, the second selection switch SA3 (22) is set to the power-off delay position, and the third selection switch SA4 (23) is set to the normally closed contact position; the power switch SA1 (20) is turned on to connect the power, the power indicator HL1 (44) is lit, and after adjusting the output voltage of the power module TB (40) to the required value, the time relay to be tested is correctly connected; the coil of the time relay to be tested is energized, the coil of the second intermediate relay K2 (32) is de-energized, the normally closed contact of the second intermediate relay K2 (32) is closed, and the timer (50) enters the ready state; the start button SB1 (41) is pressed, and the normally open contact of the first intermediate relay K1 (31) is closed, firstly, the self-protection of the start button SB1 (41) is realized; secondly, the coil of the time relay to be tested is powered, and the time relay to be tested enters the delay action process; thirdly, the timing signal of the timer (50) is connected, and the timer (50) starts timing. When the time relay to be tested completes the delayed action and the normally closed slow-acting contact is closed, the coil of the second intermediate relay K2 (32) is energized, the normally closed contact of the second intermediate relay K2 (32) is disconnected, the timing signal of the timer (50) is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; the reset button SB2 (42) is pressed to complete the verification.

[0063] The DC power-off delay relay with normally open slow-release contact is tested: the first selection switch SA2 (21) is set to the DC position, the second selection switch SA3 (22) is set to the power-off delay position, and the third selection switch SA4 (23) is set to the normally open contact position; the power switch SA1 (20) is turned on to connect the power, the power indicator HL1 (44) is lit, and after adjusting the output voltage of the power module TB (40) to the required value, the time relay to be tested is correctly connected; the coil of the time relay to be tested is energized, the coil of the second intermediate relay K2 (32) is energized, the normally open contact of the second intermediate relay K2 (32) is closed, and the timer (50) enters the ready state; the start button SB1 (41) is pressed, and the normally open contact of the first intermediate relay K1 (31) is closed, firstly, the self-protection of the start button SB1 (41) is realized; secondly, the coil of the time relay to be tested is powered, and the time relay to be tested enters the delay action process; thirdly, the timing signal of the timer (50) is connected, and the timer (50) starts timing. The normally closed contact of the first intermediate relay K1 (31) is disconnected, the coil of the time relay to be tested loses power, and the delayed action process begins; when the time relay to be tested completes the delayed action, the normally open slow-release contact is disconnected, the coil of the second intermediate relay K2 (32) loses power, the normally open contact of the second intermediate relay K2 (32) is disconnected, the timing signal of the timer (50) is interrupted, the timing is stopped and the action time of the time relay to be tested is displayed; the reset button SB2 (42) is pressed to complete the verification.

[0064] When re-measurement is required, press the reset button of the timer (50) and the reset button SB2 (42) to reset the system, and repeat the above corresponding steps as needed to perform function verification of the time relay.

[0065] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A portable time relay calibration circuit, characterized in that: include: A timer, a first intermediate relay, a second intermediate relay, a first selection switch, a second selection switch, a third selection switch, a DC voltmeter, a power switch, a start button, a reset button, a power indicator light, and a power module; The signal line of the timer is connected to the normally open contact of the first intermediate relay and the third selection switch, and the power supply line of the timer is connected to the power input terminal; The contact terminal of the first intermediate relay is connected to the first selection switch, the second selection switch, and the third selection switch, and the two ends of the coil of the first intermediate relay are connected to the power input terminal through the start button and the stop button respectively; the normally open contact terminal of the first intermediate relay is connected in parallel with the start button; The contact terminals of the second intermediate relay are connected to the second selection switch and the third selection switch; the two ends of the coil of the second intermediate relay are connected to the coil of the time relay to be checked and the power supply; The first selection switch includes an AC gear and a DC gear; when the first selection switch selects the AC gear, the time relay coil to be checked is connected to the power input end; when the first selection switch selects the DC gear, the time relay coil to be checked is connected to the output end of the power module; The second selection switch includes a power-on delay position and a power-off delay position; The third selection switch includes a normally closed contact position and a normally open contact position; When the second selection switch selects the power-on delay position, the time relay coil to be verified is connected to the normally open contact terminal of the first intermediate relay, the normally open contact terminal of the second intermediate relay is connected to the normally closed contact position of the third selection switch, and the normally closed contact terminal of the second intermediate relay is connected to the normally open contact position of the third selection switch; When the second selection switch selects the power-off delay gear, the time relay coil to be verified is connected to the normally closed contact terminal of the first intermediate relay, the normally closed contact terminal of the second intermediate relay is connected to the normally closed contact gear of the third selection switch, and the normally open contact terminal of the second intermediate relay is connected to the normally open contact gear of the third selection switch; The power module input end is connected to the power input end, and the power module output end is connected to the DC gear of the first selection switch, so as to supply DC power to the time relay coil to be checked; The DC voltmeter input terminal is connected to the power input terminal, and the voltage signal line of the DC voltmeter is connected to the DC gear of the first selection switch, so as to measure the voltage at both ends of the coil of the time relay to be checked; The power indicator light is connected to the power input terminal and is used to indicate the switch state of the power input.

2. A portable time relay calibration circuit according to claim 1, characterized in that: It also includes a DC power indicator light, which is connected to the DC position of the first selection switch.

3. A portable time relay verification circuit according to any one of claims 1 to 2, characterized in that: It also includes an emergency stop button, which is connected in series to the output end of the power switch.

4. A portable time relay calibration device, characterized in that: It comprises a portable time relay verification circuit as described in any one of claims 1-3.

5. A portable time relay calibration method, characterized in that: The portable time relay verification circuit applied to any one of claims 1 to 3 includes several working modes, namely: Verify the AC power-on delay relay with normally closed slow-release contacts: after correctly connecting the time relay to be tested, set the first selection switch to the AC position, the second selection switch to the power-on delay position, and the third selection switch to the normally closed contact position; turn on the power, the power indicator light turns on, the second intermediate relay coil is energized, the normally open contacts of the second intermediate relay are closed, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be tested is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action, the normally closed slow-release contact is disconnected, the coil of the second intermediate relay loses power, the normally open contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration; Verify the AC power-on delay relay with normally open slow-suction contacts: after correctly connecting the time relay to be tested, set the first selection switch to the AC position, the second selection switch to the power-on delay position, and the third selection switch to the normally open contact position; turn on the power, the power indicator light turns on, the second intermediate relay coil loses power, the second intermediate relay normally closed contacts close, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be tested is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action and the normally open slow-suction contacts are closed, the coil of the second intermediate relay is energized, the normally closed contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration; Verify the AC power-off delay relay with normally closed slow-suction contacts: set the first selection switch to the AC position, the second selection switch to the power-off delay position, and the third selection switch to the normally closed contact position; turn on the power, the power indicator light turns on, the coil of the time relay to be tested is energized, the coil of the second intermediate relay is de-energized, the normally closed contact of the second intermediate relay is closed, and the timer enters the ready state; press the start button, the normally open contact of the first intermediate relay is closed, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action and the normally closed slow-suction contacts are closed, the coil of the second intermediate relay is energized, the normally closed contact of the second intermediate relay is disconnected, the timing signal of the timer is interrupted, the timing is stopped, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration; Verify the AC power-off delay relay with normally open slow-release contacts: after correctly connecting the time relay to be tested, set the first selection switch to the AC position, the second selection switch to the power-off delay position, and the third selection switch to the normally open contact position; turn on the power, the power indicator light turns on, the coil of the time relay to be tested is energized, the coil of the second intermediate relay is energized, the normally open contact of the second intermediate relay is closed, and the timer enters the ready state; press the start button, the normally open contact of the first intermediate relay is closed, the timing signal of the timer is connected, and the timer starts timing; the normally closed contact of the first intermediate relay is disconnected, the coil of the time relay to be tested loses power, and enters the delay action process; when the time relay to be tested completes the delay action, the normally open slow-release contact is disconnected, the coil of the second intermediate relay loses power, the normally open contact of the second intermediate relay is disconnected, the timing signal of the timer is interrupted, the timing stops, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration; Verify the DC power-on delay relay with normally closed slow-release contacts: after correctly connecting the time relay to be tested, set the first selection switch to the DC position, the second selection switch to the power-on delay position, and the third selection switch to the normally closed contact position; turn on the power, the power indicator light turns on, adjust the output voltage of the power module to the required value, and then correctly connect the time relay to be tested; the coil of the second intermediate relay is energized, the normally open contacts of the second intermediate relay are closed, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be tested is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action, the normally closed slow-release contact is disconnected, the coil of the second intermediate relay loses power, the normally open contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration; Verify the DC power-on delay relay with normally open slow-suction contacts: set the first selection switch to the DC position, the second selection switch to the power-on delay position, and the third selection switch to the normally open contact position; turn on the power, the power indicator light turns on, adjust the output voltage of the power module to the required value, and correctly connect the time relay to be tested; the second intermediate relay coil loses power, the normally closed contacts of the second intermediate relay close, and the timer enters the ready state; press the start button, the first intermediate relay is energized, the three groups of normally open contacts of the first intermediate relay are closed, the coil of the time relay to be tested is energized, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delay action and the normally open slow-suction contacts are closed, the coil of the second intermediate relay is energized, the normally closed contacts of the second intermediate relay are disconnected, the timing signal of the timer is interrupted, the timing is stopped, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration; Check the DC power-off delay relay of the normally closed slow-suction contact: set the first selection switch to the DC position, the second selection switch to the power-off delay position, and the third selection switch to the normally closed contact position; turn on the power, the power indicator light turns on, adjust the output voltage of the power module to the required value, and correctly connect the time relay to be tested; The coil of the time relay to be tested is energized, the coil of the second intermediate relay is de-energized, the normally closed contact of the second intermediate relay is closed, and the timer enters the ready state; the start button is pressed, the normally open contact of the first intermediate relay is closed, the timing signal of the timer is connected, and the timer starts timing; when the time relay to be tested completes the delayed action and the normally closed slow-absorbing contact is attracted, the coil of the second intermediate relay is energized, the normally closed contact of the second intermediate relay is disconnected, the timing signal of the timer is interrupted, the timing is stopped, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration; Verify the DC power-off delay relay with normally open slow-release contacts: set the first selection switch to the DC position, the second selection switch to the power-off delay position, and the third selection switch to the normally open contact position; turn on the power, the power indicator light turns on, adjust the output voltage of the power module to the required value, and correctly connect the time relay to be tested; the coil of the time relay to be tested is energized, the coil of the second intermediate relay is energized, the normally open contact of the second intermediate relay is closed, and the timer enters the ready state; press the start button, the normally open contact of the first intermediate relay is closed, the timing signal of the timer is connected, and the timer starts timing; the normally closed contact of the first intermediate relay is disconnected, the coil of the time relay to be tested loses power, and enters the delay action process; when the time relay to be tested completes the delay action, the normally open slow-release contact is disconnected, the coil of the second intermediate relay loses power, the normally open contact of the second intermediate relay is disconnected, the timing signal of the timer is interrupted, the timing is stopped, and the action time of the time relay to be tested is displayed; Press the reset button to complete the calibration.

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