Explosion-proof power supply device

Abstract

The utility model relates to the field of safety power supplies, in particular to an explosion-proof power supply device, which is characterized in that a first pin of a first voltage conversion module is connected with a null line end N of an input power supply through a primary coil of a transformer, a second pin is connected with a live line end L of the input power supply through a secondary coil of the transformer and a protective tube, and a sixth pin outputs first voltage; positive electrodes of the first capacitor and the second capacitor are connected with a sixth pin of the first voltage conversion module, negative electrodes of the first capacitor and the second capacitor are connected with a fifth pin, the third capacitor is connected between the sixth pin and the fifth pin, and a second pin of the second voltage conversion module is connected with a zero line end N of an input power supply through a primary coil of the transformer. The third pin is connected with the live wire end L of the external input power supply through the secondary coil of the transformer and the protective tube, the fourth pin is grounded, the fifth pin outputs second voltage, the positive electrode of the fourth capacitor is connected with the fifth pin, the negative electrode of the fourth capacitor is connected with the fourth pin, and the fifth capacitor is connected between the fourth pin and the fifth pin. The explosion-proof power supply device is suitable for power supply application scenes with explosion-proof requirements.

Description

Technical Field

[0001] The utility model relates to the field of safety power supplies, and particularly to an explosion-proof power supply device. Background Art

[0002] An automated gas filling machine is an important device for realizing gas utilization. It compresses and safely transports gas into a fuel cell vehicle or other gas storage containers, thereby providing power for these devices. As an important part of the gas filling machine, the power supply device is responsible for providing stable power supply for key components such as the compressor, control system, and sensors of the filling machine.

[0003] The original gas filling machine had simple functions, and a single voltage output from the power supply device could meet the normal operation of the gas filling machine. However, with the development of the intelligence of the gas filling machine and the increase in functions, the single power supply provided by the original power supply device could not meet the normal operation of the gas filling machine. Therefore, at present, a power supply device is required to provide multiple safe power outputs. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an explosion-proof power supply device, which realizes multiple safe power outputs and improves the safety of the power supply device at the same time.

[0005] The present utility model adopts the following technical solutions to achieve the above object. The present utility model provides an explosion-proof power supply device, which is arranged in an explosion-proof box. The power supply device includes a first voltage conversion module U1000, a second voltage conversion module U1001, a transformer TR1000, a fuse F1000, a first capacitor C1000, a second capacitor C1001, a third capacitor C1002, a fourth capacitor C1005, and a fifth capacitor C1006. The first pin of the first voltage conversion module U1000 is connected to the neutral line terminal N of the external input power supply through the primary coil of the transformer TR1000. The second pin of the first voltage conversion module U1000 is connected to the live line terminal L of the external input power supply through the secondary coil of the transformer TR1000 and the fuse F1000. The fifth pin of the first voltage conversion module U1000 is grounded. The sixth pin of the first voltage conversion module U1000 outputs a first voltage of 24V_GB. The positive electrodes of the first capacitor C1000 and the second capacitor C1001 are respectively connected to the sixth pin of the first voltage conversion module U1000, and the negative electrodes are respectively connected to the fifth pin of the first voltage conversion module U1000. The third capacitor C1002 is connected between the sixth pin and the fifth pin of the first voltage conversion module U1000. The second pin of the second voltage conversion module U1001 is connected to the neutral line terminal N of the external input power supply through the primary coil of the transformer TR1000. The third pin of the second voltage conversion module U1001 is connected to the live line terminal L of the external input power supply through the secondary coil of the transformer TR1000 and the fuse F1000. The fourth pin of the second voltage conversion module U1001 is grounded. The fifth pin of the second voltage conversion module U1001 outputs a second voltage of 24V_IN. The positive electrode of the fourth capacitor C1005 is connected to the fifth pin of the second voltage conversion module U1001, and the negative electrode is connected to the fourth pin of the second voltage conversion module U1001. The fifth capacitor C1006 is connected between the fourth pin and the fifth pin of the second voltage conversion module U1001.

[0006] Furthermore, the power supply device further includes a third voltage conversion module U1002, a sixth capacitor C1011, a seventh capacitor C1015, and an eighth capacitor C1017. The first pin of the third voltage conversion module U1002 is grounded. The second pin is connected to the output terminal of the second voltage 24V_IN. The sixth capacitor C1011 is connected between the first pin and the second pin of the third voltage conversion module U1002. The third pin of the third voltage conversion module U1002 outputs a DC voltage of 24V. The fifth pin of the third voltage conversion module U1002 is grounded. The positive electrode of the seventh capacitor C1015 is connected to the third pin of the third voltage conversion module U1002, and the negative electrode is connected to the fifth pin of the third voltage conversion module U1002. The eighth capacitor C1017 is connected between the third pin and the fifth pin of the third voltage conversion module U1002.

[0007] Furthermore, the power supply device further includes a fourth voltage conversion module U1003, a ninth capacitor C1021, a tenth capacitor C1025, and an eleventh capacitor C1027. The first pin of the fourth voltage conversion module U1003 is grounded, the second pin is connected to the output terminal of the second voltage 24V_IN, the ninth capacitor C1021 is connected between the first pin and the second pin of the fourth voltage conversion module U1003, the third pin of the fourth voltage conversion module U1003 outputs a DC voltage of 15V, the fifth pin of the fourth voltage conversion module U1003 is grounded, the positive electrode of the tenth capacitor C1025 is connected to the third pin of the fourth voltage conversion module U1003, the negative electrode is connected to the fifth pin of the fourth voltage conversion module U1003, and the eleventh capacitor C1027 is connected between the third pin and the fifth pin of the fourth voltage conversion module U1003.

[0008] Furthermore, the power supply device further includes a fifth voltage conversion module U1004, a twelfth capacitor C1031, a thirteenth capacitor C1036, and a fourteenth capacitor C1037. The first pin of the fifth voltage conversion module U1004 is grounded, the second pin is connected to the output terminal of the second voltage 24V_IN, the twelfth capacitor C1031 is connected between the first pin and the second pin of the fifth voltage conversion module U1004, the third pin of the fifth voltage conversion module U1004 outputs a DC voltage of 5V, the fifth pin of the fifth voltage conversion module U1004 is grounded, the positive electrode of the thirteenth capacitor C1036 is connected to the third pin of the fifth voltage conversion module U1004, the negative electrode is connected to the fifth pin of the fifth voltage conversion module U1004, and the fourteenth capacitor C1037 is connected between the third pin and the fifth pin of the fifth voltage conversion module U1004.

[0009] Furthermore, the power supply device further includes a first voltage regulation module U1010 and a fifteenth capacitor C1028. The first pin of the first voltage regulation module U1010 is connected to the DC voltage terminal outputting 15V, the second pin is grounded, the third pin outputs a DC voltage of 12V, and the fifteenth capacitor C1028 is connected between the first pin and the second pin of the first voltage regulation module U1010.

[0010] Furthermore, the power supply device further includes a second voltage regulation module U1011 and a sixteenth capacitor C1008. The first pin of the second voltage regulation module U1011 is connected to the first voltage 24V_GB terminal, the second pin is grounded, and the third pin outputs the third voltage 5V_GB.

[0011] Advantages of the present utility model:

[0012] The present utility model arranges the power supply device in an explosion-proof box, provides the required power for devices such as solenoid valves, control boards, and sensors, and improves the safety of the power supply and the devices. Description of the drawings

[0013] Figure 1 It is a circuit structure diagram of an explosion-proof power supply device provided by an embodiment of the present utility model;

[0014] Figure 2 It is a circuit structure diagram of a third voltage conversion module U1002, a fourth voltage conversion module U1003, and a fifth voltage conversion module U1004 provided by an embodiment of the present utility model;

[0015] Figure 3 It is a circuit structure diagram of a first voltage stabilizing module U1010 and a second voltage stabilizing module U1011 provided by an embodiment of the present utility model. Specific implementation manners

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0017] The present utility model provides an explosion-proof power supply device, and the power supply device is arranged in an explosion-proof box, such as Figure 1As shown in the figure, the power supply device includes a first voltage conversion module U1000, a second voltage conversion module U1001, a transformer TR1000, a fuse F1000, a first capacitor C1000, a second capacitor C1001, a third capacitor C1002, a fourth capacitor C1005, and a fifth capacitor C1006. The first pin of the first voltage conversion module U1000 is connected to the neutral terminal N of the external input power supply through the primary coil of the transformer TR1000. The second pin of the first voltage conversion module U1000 is connected to the live terminal L of the external input power supply through the secondary coil of the transformer TR1000 and the fuse F1000. The fifth pin of the first voltage conversion module U1000 is grounded. The sixth pin of the first voltage conversion module U1000 outputs a first voltage of 24V_GB. The positive electrodes of the first capacitor C1000 and the second capacitor C1001 are respectively connected to the sixth pin of the first voltage conversion module U1000, and the negative electrodes are respectively connected to the fifth pin of the first voltage conversion module U1000. The third capacitor C1002 is connected between the sixth pin and the fifth pin of the first voltage conversion module U1000. The second pin of the second voltage conversion module U1001 is connected to the neutral terminal N of the external input power supply through the primary coil of the transformer TR1000. The third pin of the second voltage conversion module U1001 is connected to the live terminal L of the external input power supply through the secondary coil of the transformer TR1000 and the fuse F1000. The fourth pin of the second voltage conversion module U1001 is grounded. The fifth pin of the second voltage conversion module U1001 outputs a second voltage of 24V_IN. The positive electrode of the fourth capacitor C1005 is connected to the fifth pin of the second voltage conversion module U1001, and the negative electrode is connected to the fourth pin of the second voltage conversion module U1001. The fifth capacitor C1006 is connected between the fourth pin and the fifth pin of the second voltage conversion module U1001.

[0018] Specifically, as Figure 2 shown in the figure, the power supply device further includes a third voltage conversion module U1002, a sixth capacitor C1011, a seventh capacitor C1015, and an eighth capacitor C1017. The first pin of the third voltage conversion module U1002 is grounded. The second pin is connected to the output terminal of the second voltage 24V_IN. The sixth capacitor C1011 is connected between the first pin and the second pin of the third voltage conversion module U1002. The third pin of the third voltage conversion module U1002 outputs a DC voltage of 24V. The fifth pin of the third voltage conversion module U1002 is grounded. The positive electrode of the seventh capacitor C1015 is connected to the third pin of the third voltage conversion module U1002, and the negative electrode is connected to the fifth pin of the third voltage conversion module U1002. The eighth capacitor C1017 is connected between the third pin and the fifth pin of the third voltage conversion module U1002.

[0019] Specifically, as Figure 2As shown, the power supply device further includes a fourth voltage conversion module U1003, a ninth capacitor C1021, a tenth capacitor C1025, and an eleventh capacitor C1027. The first pin of the fourth voltage conversion module U1003 is grounded, the second pin is connected to the output terminal of the second voltage 24V_IN. The ninth capacitor C1021 is connected between the first and second pins of the fourth voltage conversion module U1003. The third pin of the fourth voltage conversion module U1003 outputs a DC voltage of 15V. The fifth pin of the fourth voltage conversion module U1003 is grounded. The positive electrode of the tenth capacitor C1025 is connected to the third pin of the fourth voltage conversion module U1003, and the negative electrode is connected to the fifth pin of the fourth voltage conversion module U1003. The eleventh capacitor C1027 is connected between the third and fifth pins of the fourth voltage conversion module U1003.

[0020] Specifically, as Figure 2 As shown, the power supply device further includes a fifth voltage conversion module U1004, a twelfth capacitor C1031, a thirteenth capacitor C1036, and a fourteenth capacitor C1037. The first pin of the fifth voltage conversion module U1004 is grounded, the second pin is connected to the output terminal of the second voltage 24V_IN. The twelfth capacitor C1031 is connected between the first and second pins of the fifth voltage conversion module U1004. The third pin of the fifth voltage conversion module U1004 outputs a DC voltage of 5V. The fifth pin of the fifth voltage conversion module U1004 is grounded. The positive electrode of the thirteenth capacitor C1036 is connected to the third pin of the fifth voltage conversion module U1004, and the negative electrode is connected to the fifth pin of the fifth voltage conversion module U1004. The fourteenth capacitor C1037 is connected between the third and fifth pins of the fifth voltage conversion module U1004.

[0021] Specifically, as Figure 3 As shown, the power supply device further includes a first voltage regulation module U1010 and a fifteenth capacitor C1028. The first pin of the first voltage regulation module U1010 is connected to the DC voltage terminal outputting 15V, the second pin is grounded, and the third pin outputs a DC voltage of 12V. The fifteenth capacitor C1028 is connected between the first and second pins of the first voltage regulation module U1010.

[0022] Specifically, as Figure 3 As shown, the power supply device further includes a second voltage regulation module U1011 and a sixteenth capacitor C1008. The first pin of the second voltage regulation module U1011 is connected to the first voltage 24V_GB terminal, the second pin is grounded, and the third pin outputs the third voltage 5V_GB.

[0023] The working principle of the present utility model:

[0024] This explosion-proof power supply device is powered by the on-site AC220V / 50Hz general AC power supply. After the alternating current passes through protection and filtering circuits such as fuses and common-mode inductors, it is input to the first-stage isolated power supply circuit, as Figure 1 shown. The first-stage isolated power supply circuit includes two independent isolated power supply modules U1000 and U1001. The isolated power supply module U1000 outputs an isolated 24V_GB DC voltage for powering the on-site equipment outside the explosion-proof power supply; the isolated 24V_IN DC voltage output by the isolated power supply module U1001 is used to power the circuits and equipment inside the explosion-proof power supply.

[0025] The 24V_IN DC voltage used to power the circuits and equipment inside the explosion-proof power supply is input to the second-stage isolated power supply circuit, as Figure 2 shown. The second-stage isolated power supply circuit includes three independent isolated power supply modules U1002, U1003, and U1004. The isolated power supply module U1002 outputs an isolated 24V DC voltage, the isolated power supply module U1003 outputs an isolated 15V DC voltage, and the isolated power supply module U1004 outputs an isolated 5V DC voltage. The three groups of 24V, 15V, and 5V DC voltages output are grounded and used to power the unit circuits inside the explosion-proof power supply.

[0026] As Figure 3 shown, the 15V DC voltage passes through the voltage regulator chip 78M12 and then outputs a 12V DC voltage for powering the circuits and equipment inside the explosion-proof power supply. The isolated 24V_GB DC voltage output by the isolated power supply module U1000 passes through the voltage regulator chip 78M05 and then outputs a 5V DC power supply for powering the circuits and equipment inside the explosion-proof power supply.

[0027] The above is only the preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. An explosion-proof power supply device, characterized in that, The power supply device is arranged in an explosion-proof box. The power supply device includes a first voltage conversion module (U1000), a second voltage conversion module (U1001), a transformer (TR1000), a fuse tube (F1000), a first capacitor (C1000), a second capacitor (C1001), a third capacitor (C1002), a fourth capacitor (C1005), and a fifth capacitor (C1006). The first pin of the first voltage conversion module (U1000) is connected to the neutral line terminal (N) of the external input power supply through the primary coil of the transformer (TR1000). The second pin of the first voltage conversion module (U1000) is connected to the live line terminal (L) of the external input power supply through the secondary coil of the transformer (TR1000) and the fuse tube (F1000). The fifth pin of the first voltage conversion module (U1000) is grounded. The sixth pin of the first voltage conversion module (U1000) outputs a first voltage (24V_GB). The positive electrodes of the first capacitor (C1000) and the second capacitor (C1001) are respectively connected to the sixth pin of the first voltage conversion module (U1000), and the negative electrodes are respectively connected to the fifth pin of the first voltage conversion module (U1000). The third capacitor (C1002) is connected between the sixth pin and the fifth pin of the first voltage conversion module (U1000). The second pin of the second voltage conversion module (U1001) is connected to the neutral line terminal (N) of the external input power supply through the primary coil of the transformer (TR1000). The third pin of the second voltage conversion module (U1001) is connected to the live line terminal (L) of the external input power supply through the secondary coil of the transformer (TR1000) and the fuse tube (F1000). The fourth pin of the second voltage conversion module (U1001) is grounded. The fifth pin of the second voltage conversion module (U1001) outputs a second voltage (24V_IN). The positive electrode of the fourth capacitor (C1005) is connected to the fifth pin of the second voltage conversion module (U1001), and the negative electrode is connected to the fourth pin of the second voltage conversion module (U1001). The fifth capacitor (C1006) is connected between the fourth pin and the fifth pin of the second voltage conversion module (U1001).

2. The explosion-proof power supply device according to claim 1, characterized in that The power supply device further includes a third voltage conversion module (U1002), a sixth capacitor (C1011), a seventh capacitor (C1015), and an eighth capacitor (C1017). The first pin of the third voltage conversion module (U1002) is grounded, the second pin is connected to the output terminal of the second voltage (24V_IN). The sixth capacitor (C1011) is connected between the first pin and the second pin of the third voltage conversion module (U1002). The third pin of the third voltage conversion module (U1002) outputs a DC voltage of 24V. The fifth pin of the third voltage conversion module (U1002) is grounded. The positive electrode of the seventh capacitor (C1015) is connected to the third pin of the third voltage conversion module (U1002), and the negative electrode is connected to the fifth pin of the third voltage conversion module (U1002). The eighth capacitor (C1017) is connected between the third pin and the fifth pin of the third voltage conversion module (U1002).

3. The flameproof power supply device according to claim 2, characterized in that The power supply device further includes a fourth voltage conversion module (U1003), a ninth capacitor (C1021), a tenth capacitor (C1025), and an eleventh capacitor (C1027). The first pin of the fourth voltage conversion module (U1003) is grounded, the second pin is connected to the output terminal of the second voltage (24V_IN). The ninth capacitor (C1021) is connected between the first pin and the second pin of the fourth voltage conversion module (U1003). The third pin of the fourth voltage conversion module (U1003) outputs a DC voltage of 15V. The fifth pin of the fourth voltage conversion module (U1003) is grounded. The positive electrode of the tenth capacitor (C1025) is connected to the third pin of the fourth voltage conversion module (U1003), and the negative electrode is connected to the fifth pin of the fourth voltage conversion module (U1003). The eleventh capacitor (C1027) is connected between the third pin and the fifth pin of the fourth voltage conversion module (U1003).

4. The explosion-proof power supply device according to claim 3, characterized in that, The power supply device further includes a fifth voltage conversion module (U1004), a twelfth capacitor (C1031), a thirteenth capacitor (C1036), and a fourteenth capacitor (C1037). The first pin of the fifth voltage conversion module (U1004) is grounded, the second pin is connected to the output terminal of the second voltage (24V_IN). The twelfth capacitor (C1031) is connected between the first pin and the second pin of the fifth voltage conversion module (U1004). The third pin of the fifth voltage conversion module (U1004) outputs a DC voltage of 5V. The fifth pin of the fifth voltage conversion module (U1004) is grounded. The positive electrode of the thirteenth capacitor (C1036) is connected to the third pin of the fifth voltage conversion module (U1004), and the negative electrode is connected to the fifth pin of the fifth voltage conversion module (U1004). The fourteenth capacitor (C1037) is connected between the third pin and the fifth pin of the fifth voltage conversion module (U1004).

5. The flameproof power supply device according to claim 3, characterized in that The power supply device further includes a first voltage stabilizing module (U1010) and a fifteenth capacitor (C1028). The first pin of the first voltage stabilizing module (U1010) is connected to the DC voltage terminal outputting 15V, the second pin is grounded, the third pin outputs a DC voltage of 12V, and the fifteenth capacitor (C1028) is connected between the first pin and the second pin of the first voltage stabilizing module (U1010).

6. The flameproof power supply device according to claim 1, characterized in that, The power supply device further includes a second voltage stabilizing module (U1011) and a sixteenth capacitor (C1008). The first pin of the second voltage stabilizing module (U1011) is connected to the first voltage (24V_GB) terminal, the second pin is grounded, and the third pin outputs the third voltage (5V_GB).

Images