Flame detection power supply system and device

Abstract

The utility model relates to the technical field of power supplies, in particular to a flame detection power supply system and device, the system comprises a first power frequency power supply and a second power frequency power supply, the first power frequency power supply and the second power frequency power supply are respectively and electrically connected with a switching power supply module through a circuit breaker; eight switching power supplies in the switching power supply module are connected with the power supply redundancy module in a pairwise redundancy mode, eight power supply redundancy units of the power supply redundancy module are divided into four groups, and the power supply input end of each flame detection amplifier clamping frame is connected with two power supply redundancy units of one group. According to the utility model, through the arrangement of the switching power supply module, the power supply redundancy module and the flame detection amplifier clamping frame, the multi-redundancy arrangement of the power supply is realized, the fault-tolerant capability of the system is improved, the high-reliability and high-stability power supply is realized, and a powerful guarantee is provided for the normal operation of flame detection equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a fire detection power supply system and device. Background Art

[0002] With the rapid development of my country's economy and the significant improvement of industrial control technology, the demand for electricity continues to rise, driving the rapid growth of the power industry. At present, my country's power industry has entered an era of large power grids, large units, high parameters and high automation. The growth of unit capacity has brought higher operating parameters and more complex unit systems, and the requirements for the safe operation of power facilities have become increasingly stringent.

[0003] In the field of thermal power generation, the boiler safety monitoring system is the core system to ensure production safety, and the flame detector plays a vital role. The flame detector is responsible for real-time monitoring of the flame state in the combustion chamber to ensure the stability and safety of the combustion process. The power supply of the flame detector using an uninterruptible power supply needs to have high reliability. Although uninterruptible power supplies are currently widely used in various fields of industrial control, their structure is usually complex and the cost is relatively high, such as the application of automatic transfer switches.

[0004] The power supply usually provided by power plants is 220VAC or 380VAC, which cannot meet the 24VDC power supply required by flame detectors. In modern electronic products, switching power supplies have gradually replaced linear power supplies due to their high efficiency and flexibility, but the DC voltage output by switching power supplies is often accompanied by large ripples, which require further rectification and filtering to achieve stable power supply.

[0005] Traditional power supply solutions usually use two sets of power supplies to directly power the flame detector of the entire boiler. This design has obvious deficiencies in safety and stability. Utility Model Content

[0006] The purpose of the present utility model is to provide a fire detection power supply system and device in order to solve at least one of the above-mentioned technical problems, directly providing a stable secondary redundant power supply to the flame inspection equipment, and the device has the characteristics of simple structure, stability and reliability, high cost performance, and convenient on-site installation and maintenance.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: a fire detection power supply system, including a first power frequency power supply and a second power frequency power supply,

[0008] The first power frequency power supply is electrically connected to the first circuit breaker, and the second power frequency power supply is electrically connected to the second circuit breaker;

[0009] The first circuit breaker and the second circuit breaker are both electrically connected to a switching power supply module; the switching power supply module includes four switching power supplies electrically connected to the first circuit breaker and four switching power supplies connected to the second circuit breaker;

[0010] The system also includes a power redundancy module and four fire detection amplifier card racks;

[0011] The power redundancy module includes eight power redundancy units, each of which is respectively connected to two switch power supplies in the switch power supply module; one of the two switch power supplies is connected to the first circuit breaker, and the other switch power supply is connected to the second circuit breaker;

[0012] The eight power redundancy units are divided into four groups, and the power input end of each fire detection amplifier card rack is connected to two power redundancy units in one group.

[0013] Furthermore, the system further comprises: a fuse terminal module, the fuse terminal module comprises eight fuse terminals, each fuse terminal is connected in series between a live wire of the switching power supply and the first circuit breaker or the second circuit breaker.

[0014] Furthermore, the system also includes: a third industrial frequency power supply, which is electrically connected to the in-cabinet lighting equipment in the fire detection amplifier cabinet through a third circuit breaker.

[0015] Further, the system further comprises: a first terminal block, a second terminal block, a third terminal block, a first power monitoring relay, a second power monitoring relay, and a third power monitoring relay;

[0016] The first power frequency power supply is connected to the first circuit breaker through the first terminal block, the second power frequency power supply is connected to the second circuit breaker through the second terminal block, and the third power frequency power supply is connected to the third circuit breaker through the third terminal block;

[0017] The first terminal block, the second terminal block, and the third terminal block are connected to the first DCS terminal block through the first power monitoring relay, the second power monitoring relay, and the third power monitoring relay, respectively.

[0018] Furthermore, the system further comprises: a switching power supply terminal block module, wherein the switching power supply terminal block module comprises a plurality of switching power supply terminal blocks, and the neutral line of each switching power supply is connected to its corresponding circuit breaker through one of the switching power supply terminal blocks.

[0019] Further, the system further comprises: a second DCS terminal block and a power monitoring relay module, wherein the power monitoring relay module comprises a plurality of power monitoring relays;

[0020] Each of the switching power supplies is connected to the second DCS terminal block via a power monitoring relay.

[0021] A fire detection power supply device, including any fire detection power supply system, the device comprises: a power supply base plate and four fire detection amplifier card racks arranged in a fire detection amplifier cabinet;

[0022] The power base plate is provided with four layers, wherein the first layer is provided with a power redundancy module, the second layer is provided with a switch power module, the third layer is provided with a fuse terminal module, a switch power terminal block module, a power monitoring relay module, and a second DCS terminal block, and the fourth layer is provided with a first circuit breaker, a second circuit breaker, a third circuit breaker, a first terminal block, a second terminal block, a third terminal block, three power monitoring relays connected to the boiler combustion safety control system, and a first DCS terminal block;

[0023] The frame constituting the power base plate is provided with a cable trough on each layer for laying and protecting cables.

[0024] Furthermore, the power baseboard adopts a standard card frame with a size of 12U, 19".

[0025] Furthermore, the power monitoring relay connected to the boiler combustion safety control system and the power monitoring relay in the power monitoring relay module both adopt relays with indicator light functions.

[0026] Furthermore, the switching power supply module adopts a metal shell and a guide rail type thin power supply.

[0027] The utility model has the following beneficial effects:

[0028] The utility model designs two switching power supplies and two power redundancy units for the five coal fire detectors on each floor. The power inputs of the two switching power supplies are APS and UPS respectively. The 24V power output by the switching power supply is given to two independent power redundancy units. The two redundant 24V outputs are finally used to power the fire detection equipment after mutual redundancy again.

[0029] The power output by the two-way switching power supply of the utility model after secondary redundancy can achieve the function of automatic switching. It is a simple and extremely safe uninterruptible power supply. At the same time, it can ensure that the output power supply has high stability and strong practicality, and avoid the boiler operation MFT caused by fire detection power supply failure to the greatest extent.

[0030] The utility model is designed with a matching fuse terminal in front of each switching power supply. During the normal operation of the equipment, each power supply can be inspected and maintained without affecting other equipment, and the inspection and maintenance are convenient.

[0031] The utility model is designed with three 220VAC power input monitoring relays, which can monitor the fire detection power input on the one hand, and transmit electrical signals to the DCS control system on the other hand, so as to monitor and alarm in real time and improve the safety and stability of the equipment.

[0032] The utility model is designed with 8 24V power input monitoring relays, which can monitor the fire detection power output on the one hand, and transmit electrical signals to the DCS control system on the other hand, so as to monitor and alarm in real time and improve the safety and stability of the equipment.

[0033] All electronic components of the utility model are compact, with complete overall functions and small space occupation, which effectively utilizes the space of the system cabinet, has a high assembly rate of flame detectors, and saves space; in addition, all components are installed in a guide rail type, which is simple and labor-saving to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of a fire detection power supply system according to an embodiment of the present utility model;

[0035] Figure 2 This is a schematic diagram of the overall structure of a fire detection power supply device according to an embodiment of the present utility model;

[0036] Figure 3 It is a front structural schematic diagram of a fire detection power supply device according to an embodiment of the utility model.

[0037] In the figure: 1, a first power supply redundant unit, 2, a second power supply redundant unit, 3, a third power supply redundant unit, 4, a fourth power supply redundant unit, 5, a fifth power supply redundant unit, 6, a sixth power supply redundant unit, 7, a seventh power supply redundant unit, 8, an eighth power supply redundant unit, 9, a power supply backplane, 10, a second DCS terminal block, 11, a first switching power supply, 12, a second switching power supply, 13, a third switching power supply, 14, a fourth switching power supply, 15, a fifth switching power supply, 16, a sixth switching power supply, 17, a seventh switching power supply, 18, an eighth switching power supply, 19. First DCS terminal block, 20. Cable trough, 21. First fuse terminal, 22. Second fuse terminal, 23. Third fuse terminal, 24. Fourth fuse terminal, 25. Fifth fuse terminal, 26. Sixth fuse terminal, 27. Seventh fuse terminal, 28. Eighth fuse terminal, 29. First circuit breaker, 30. Second circuit breaker, 31. First switch power supply terminal block, 32. Second switch power supply terminal block, 33. Third switch power supply terminal block, 34. Fourth switch power supply terminal block, 35. Fifth switch power supply terminal block, 36. Sixth switch power terminal block, 37. Seventh switch power terminal block, 38. Eighth switch power terminal block, 39. Third circuit breaker, 40. First connection terminal block, 41. Fourth power monitoring relay, 42. Fifth power monitoring relay, 43. Sixth power monitoring relay, 44. Seventh power monitoring relay, 45. Eighth power monitoring relay, 46. Ninth power monitoring relay, 47. Tenth power monitoring relay, 48. Eleventh power monitoring relay, 49. Second connection terminal block, 50. Third connection terminal block, 51. 1. Power supply monitoring relay, 52. Second power supply monitoring relay, 53. Third power supply monitoring relay, 54. First industrial frequency power supply, 55. Second industrial frequency power supply, 56. Third industrial frequency power supply, 57. Cabinet lighting equipment, 58. Power supply monitoring relay module, 59. Fire detection amplifier card rack one, 60. Fire detection amplifier card rack two, 61. Fire detection amplifier card rack three, 62. Fire detection amplifier card rack four, 63. Power supply redundancy device, 64. Switch power supply module, 65. Power supply redundancy module, 66. Fuse terminal module, 67. Switch power supply terminal block module. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Embodiment 1

[0040] Figure 1 FIG. 1 is a schematic diagram of the structure of a fire detection power supply system according to an embodiment of the present utility model. Figure 1 As shown, according to an embodiment of the present utility model, a fire detection power supply system includes a first power frequency power supply 54 and a second power frequency power supply 55,

[0041] The first power frequency power supply 54 is electrically connected to the first circuit breaker 29, and the second power frequency power supply 55 is electrically connected to the second circuit breaker 30;

[0042] The first circuit breaker 29 and the second circuit breaker 30 are both electrically connected to the switch power supply module 64;

[0043] The switch power supply module 64 includes four switch power supplies electrically connected to the first circuit breaker 29 and four switch power supplies connected to the second circuit breaker 30;

[0044] The fire detection power supply system also includes a power redundancy module 65 and four fire detection amplifier card racks;

[0045] The power redundancy module 65 includes eight power redundancy units, each of which is connected to two switch power supplies in the switch power supply module 64; one of the two switch power supplies is connected to the first circuit breaker 29, and the other switch power supply is connected to the second circuit breaker 30;

[0046] The eight power redundancy units are divided into four groups, and the power input end of each fire detection amplifier card rack is connected to two power redundancy units in one group.

[0047] In this embodiment, the fire detection power supply system includes: a first power frequency power supply 54, a second power frequency power supply 55, a first circuit breaker 29, a second circuit breaker 30, a switch power supply module 64, a power supply redundancy module 65 and four fire detection amplifier card racks;

[0048] The switch power supply module 64 includes a first switch power supply 11, a second switch power supply 12, a third switch power supply 13, a fourth switch power supply 14, a fifth switch power supply 15, a sixth switch power supply 16, a seventh switch power supply 17, and an eighth switch power supply 18;

[0049] The power supply redundancy module 65 includes a first power supply redundancy unit 1, a second power supply redundancy unit 2, a third power supply redundancy unit 3, a fourth power supply redundancy unit 4, a fifth power supply redundancy unit 5, a sixth power supply redundancy unit 6, a seventh power supply redundancy unit 7, and an eighth power supply redundancy unit 8;

[0050] The four fire detection amplifier racks are fire detection amplifier rack one 59, fire detection amplifier rack two 60, fire detection amplifier rack three 61, and fire detection amplifier rack four 62;

[0051] The first industrial frequency power supply 54 is electrically connected to the first circuit breaker 29, and the neutral line and the live line of the first switch power supply 11, the second switch power supply 12, the third switch power supply 13, and the fourth switch power supply 14 are electrically connected to the first circuit breaker 29 respectively;

[0052] The second power frequency power supply 55 is electrically connected to the second circuit breaker 30, and the neutral line and the live line of the fifth switch power supply 15, the sixth switch power supply 16, the seventh switch power supply 17, and the eighth switch power supply 18 are electrically connected to the second circuit breaker 30 respectively;

[0053] The first group of power outputs of the first switching power supply 11 and the first group of power outputs of the fifth switching power supply 15 are connected to the first power supply redundancy unit 1 for redundancy, and the second group of power outputs of the first switching power supply 11 and the second group of power outputs of the fifth switching power supply 15 are connected to the fifth power supply redundancy unit 5 for redundancy;

[0054] The first group of power outputs of the second switching power supply 12 and the first group of power outputs of the sixth switching power supply 16 are connected to the second power redundancy module 2 for redundancy, and the second group of power outputs of the second switching power supply 12 and the second group of power outputs of the sixth switching power supply 16 are connected to the sixth power redundancy unit 6 for redundancy;

[0055] The first group of power outputs of the third switching power supply 13 and the first group of power outputs of the seventh switching power supply 17 are connected to the third power redundancy module 3 for redundancy, and the second group of power outputs of the third switching power supply 13 and the second group of power outputs of the seventh switching power supply 17 are connected to the seventh power redundancy unit 7 for redundancy;

[0056] The first group of power outputs of the fourth switch power supply 14 and the first group of power outputs of the eighth switch power supply 18 are connected to the fourth power redundancy module 4 for redundancy, and the second group of power outputs of the fourth switch power supply 14 and the second group of power outputs of the eighth switch power supply 18 are connected to the eighth power redundancy unit 8 for redundancy;

[0057] The redundant power outputs of the first power supply redundant unit 1 and the fifth power supply redundant unit 5 are connected to the power input terminal of the fire detection amplifier card rack 1 59, the redundant power outputs of the second power supply redundant unit 2 and the sixth power supply redundant unit 6 are connected to the power input terminal of the fire detection amplifier card rack 2 60, the redundant power outputs of the third power supply redundant unit 3 and the seventh power supply redundant unit 7 are connected to the power input terminal of the fire detection amplifier card rack 3 61, and the redundant power outputs of the fourth power supply redundant unit 4 and the eighth power supply redundant unit 8 are connected to the power input terminal of the fire detection amplifier card rack 4 62.

[0058] The first power frequency power supply 54 and the second power frequency power supply 55 are connected to the external power frequency power supply through the first circuit breaker 29 and the second circuit breaker 30. The eight switch power supplies are divided into two groups, four switch power supplies are connected to the first circuit breaker 29, and four switch power supplies are connected to the second circuit breaker 30. The eight switch power supplies are connected to eight power redundancy units for redundancy in pairs. In sequence, one group of power outputs of the first switch power supply 11 and the fifth switch power supply 15 is connected to the first power redundancy unit 1 for redundancy, and the other group of power outputs is connected to the fifth power redundancy unit 5 for redundancy; one group of power outputs of the second switch power supply 12 and the sixth switch power supply 16 is connected to the second power redundancy unit 2 for redundancy, and the other group of power outputs is connected to the sixth power redundancy unit 6 for redundancy; one group of power outputs of the third switch power supply 13 and the seventh switch power supply 17 is connected to the third power redundancy unit 3 for redundancy, and the other group of power outputs is connected to the seventh power redundancy unit 7 for redundancy; one group of power outputs of the fourth switch power supply 14 and the eighth switch power supply 18 is connected to the fourth power redundancy unit 4 for redundancy, and the other group of power outputs is connected to the eighth power redundancy unit 8 for redundancy;

[0059] The redundant power outputs of the first power supply redundant unit 1 and the fifth power supply redundant unit 5 are connected to the power input terminal of the fire detection amplifier card rack 1 59, the redundant power outputs of the second power supply redundant unit 2 and the sixth power supply redundant unit 6 are connected to the power input terminal of the fire detection amplifier card rack 2 60, the redundant power outputs of the third power supply redundant unit 3 and the seventh power supply redundant unit 7 are connected to the power input terminal of the fire detection amplifier card rack 3 61, the redundant power outputs of the fourth power supply redundant unit 4 and the eighth power supply redundant unit 8 are connected to the power input terminal of the fire detection amplifier card rack 4 62, and each fire detection amplifier card rack is again provided with a power supply redundant device 63.

[0060] The utility model is designed with two independent redundant power supplies for each layer of the fire detection amplifier rack. The power supply of the two power redundancy units comes from two completely independent power supply modules. The power supply of the fire detection amplifier rack is a reliable and stable power supply after secondary redundancy, which is extremely safe. The fire detection power supply system provided by the utility model provides dual-way power supply guarantee. Through the setting of the switching power supply module, the power redundancy module, and the fire detection amplifier rack, multiple redundant settings of the power supply are realized, the fault tolerance of the system is improved, and a high-reliability and high-stability power supply is realized, which provides a strong guarantee for the normal operation of the fire detection equipment.

[0061] According to one embodiment of the utility model, the fire detection power supply system also includes: a fuse terminal module 66, the fuse terminal module 66 includes eight fuse terminals, each fuse terminal is connected in series between a live wire of a switching power supply and the first circuit breaker 29 or the second circuit breaker 30.

[0062] In this embodiment, the fire detection power supply system further includes a fuse terminal module 66, and the fuse terminal module 66 includes a first fuse terminal 21, a second fuse terminal 22, a third fuse terminal 23, a fourth fuse terminal 24, a fifth fuse terminal 25, a sixth fuse terminal 26, a seventh fuse terminal 27, and an eighth fuse terminal 28;

[0063] The live wire of the first switching power supply 11 is connected to the first circuit breaker 29 through the first fuse terminal 21, the live wire of the second switching power supply 12 is connected to the first circuit breaker 29 through the second fuse terminal 22, the live wire of the third switching power supply 13 is connected to the first circuit breaker 29 through the third fuse terminal 23, and the live wire of the fourth switching power supply 14 is connected to the first circuit breaker 29 through the fourth fuse terminal 24; the live wire of the fifth switching power supply 15 is connected to the second circuit breaker 30 through the fifth fuse terminal 25, the live wire of the sixth switching power supply 16 is connected to the second circuit breaker 30 through the sixth fuse terminal 26, the live wire of the seventh switching power supply 17 is connected to the second circuit breaker 30 through the seventh fuse terminal 27, and the live wire of the eighth switching power supply 18 is connected to the second circuit breaker 30 through the eighth fuse terminal 28.

[0064] The first circuit breaker and the second circuit breaker of the utility model are both connected to the live wire input end of the switching power supply through independent fuse terminals. The switching power supply and the fuse terminals correspond one to one and are independent of each other, thereby improving the safety of the system.

[0065] According to one embodiment of the utility model, the fire detection power supply system also includes: a third industrial frequency power supply 56, and the third industrial frequency power supply 56 is electrically connected to the in-cabinet lighting equipment 57 in the fire detection amplifier cabinet through a third circuit breaker 39.

[0066] In this embodiment, the fire detection power supply system includes a third industrial frequency power supply 56, and the third industrial frequency power supply 56 is electrically connected to the in-cabinet lighting equipment 57 in the fire detection amplifier cabinet through a third circuit breaker 39.

[0067] The utility model adds a third industrial frequency power supply and provides power to the lighting equipment in the fire detection amplifier cabinet through a third circuit breaker. This improvement enhances the functionality of the fire detection power supply system, which not only ensures the stable power supply of the fire detection equipment, but also provides convenient lighting conditions for operation and maintenance, thereby improving the availability and practicality of the entire system.

[0068] According to an embodiment of the present utility model, the fire detection power supply system further includes: a first terminal block 40, a second terminal block 49, a third terminal block 50, a first power supply monitoring relay 51, a second power supply monitoring relay 52, and a third power supply monitoring relay 53;

[0069] The first power frequency power source 54 is connected to the first circuit breaker 29 via the first terminal block 40, the second power frequency power source 55 is connected to the second circuit breaker 30 via the second terminal block 49, and the third power frequency power source 56 is connected to the third circuit breaker 39 via the third terminal block 50;

[0070] The first terminal block 40 , the second terminal block 49 , and the third terminal block 50 are connected to the first DCS terminal block 19 via a first power supply monitoring relay 51 , a second power supply monitoring relay 52 , and a third power supply monitoring relay 53 , respectively.

[0071] In this embodiment, the first industrial frequency power supply 54 is connected to the first circuit breaker 29 through the first terminal block 40, and the first terminal block 40 is connected to the first DCS terminal block 19 through the first power supply monitoring relay 51; the second industrial frequency power supply 55 is connected to the second circuit breaker 30 through the second terminal block 49, and the second terminal block 49 is connected to the first DCS terminal block 19 through the second power supply monitoring relay 52; the third industrial frequency power supply 56 is connected to the third circuit breaker 39 through the third terminal block 50, and the third terminal block 50 is connected to the first DCS terminal block 19 through the third power supply monitoring relay 53.

[0072] The first power supply monitoring relay 51 , the second power supply monitoring relay 52 , and the third power supply monitoring relay 53 are used to monitor three external power frequency power supplies, and transmit the results to the boiler combustion safety control system through the first DCS terminal block 19 .

[0073] The utility model realizes reliable connection and real-time monitoring of three external power frequency power supplies by adding a terminal block and a power monitoring relay; this design not only improves the connection flexibility of the power supply system, but also transmits the monitoring results to the boiler combustion safety control system through the DCS terminal block, thereby enhancing the safety and controllability of the system.

[0074] According to one embodiment of the utility model, the fire detection power supply system also includes: a switching power supply terminal block module 67, the switching power supply terminal block module 67 includes multiple switching power supply terminal blocks, and the neutral line of each switching power supply is connected to its corresponding circuit breaker through a switching power supply terminal block.

[0075] In this embodiment, the fire detection power supply system includes a switch power terminal block module 67, and the switch power terminal block module 67 includes a first switch power terminal block 31, a second switch power terminal block 32, a third switch power terminal block 33, a fourth switch power terminal block 34, a fifth switch power terminal block 35, a sixth switch power terminal block 36, a seventh switch power terminal block 37, and an eighth switch power terminal block 38;

[0076] The neutral line of the first switch power supply 11 is connected to the first circuit breaker 29 through the first switch power supply terminal block 31, the neutral line of the second switch power supply 12 is connected to the first circuit breaker 29 through the second switch power supply terminal block 32, the neutral line of the third switch power supply 13 is connected to the first circuit breaker 29 through the third switch power supply terminal block 33, and the neutral line of the fourth switch power supply 14 is connected to the first circuit breaker 29 through the fourth switch power supply terminal block 34; the neutral line of the fifth switch power supply 15 is connected to the second circuit breaker 30 through the fifth switch power supply terminal block 35, the neutral line of the sixth switch power supply 16 is connected to the second circuit breaker 30 through the sixth switch power supply terminal block 36, the neutral line of the seventh switch power supply 17 is connected to the second circuit breaker 30 through the seventh switch power supply terminal block 37, and the neutral line of the eighth switch power supply 18 is connected to the second circuit breaker 30 through the eighth switch power supply terminal block 38.

[0077] The utility model realizes the connection between the switching power supply and the neutral line of the corresponding circuit breaker through multiple switching power supply terminal blocks, which not only improves the connection efficiency of the power supply system, but also enhances the stability and safety of the system, providing a strong guarantee for the stable operation of the fire detection equipment.

[0078] According to an embodiment of the utility model, the fire detection power supply system further comprises: a second DCS terminal block 10 and a power monitoring relay module 58, the power monitoring relay module 58 comprising a plurality of power monitoring relays;

[0079] Each switching power supply is connected to the second DCS terminal block 10 via a power supply monitoring relay.

[0080] In this embodiment, the power monitoring relay module 58 includes: a fourth power monitoring relay 41 connected to the first switching power supply 11, a fifth power monitoring relay 42 connected to the second switching power supply 12, a sixth power monitoring relay 43 connected to the third switching power supply 13, a seventh power monitoring relay 44 connected to the fourth switching power supply 14, an eighth power monitoring relay 45 connected to the fifth switching power supply 15, a ninth power monitoring relay 46 connected to the sixth switching power supply 16, a tenth power monitoring relay 47 connected to the seventh switching power supply 17, and an eleventh power monitoring relay 48 connected to the eighth switching power supply 18; each power monitoring relay in the power monitoring relay module 58 is connected to the boiler combustion safety control system through the second DCS terminal block 10.

[0081] The utility model monitors the states of eight switch power supplies respectively through eight power supply monitoring relays, and transmits the monitoring results to the boiler combustion safety control system through the second DCS terminal block, thereby enhancing the safety and controllability of the system.

[0082] Embodiment 2

[0083] According to an embodiment of the utility model, a fire detection power supply system is arranged in a fire detection amplifier cabinet, on which a first power input terminal block 40, a second power input terminal block 49, and a third power input terminal block 50 are arranged, a first circuit breaker 29, a second circuit breaker 30, and a third circuit breaker 39 connected to an external first power frequency power supply 54, a second power frequency power supply 55, and a third power frequency power supply 56 through the power input first terminal block 40, the second terminal block 49, and the third terminal block 50, a first switch power supply 11, a second switch power supply 12, a third switch power supply 13, a fourth switch power supply 14, a fifth switch power supply 15, a sixth switch power supply 16, a seventh switch power supply 17, and an eighth switch power supply 18,

[0084] The fuse terminal module 66 (the first fuse terminal 21, the second fuse terminal 22, the third fuse terminal 23, the fourth fuse terminal 24, the fifth fuse terminal 25, the sixth fuse terminal 26, the seventh fuse terminal 27, the eighth fuse terminal 28) of the eight switching power supply live wires (the first switching power supply 11 to the eighth switching power supply 18) is connected to the first circuit breaker 29, the second circuit breaker 30 to the eight switching power supply live wires (the first switching power supply 11 to the eighth switching power supply 18); that is, the live wire of each switching power supply is connected to its corresponding circuit breaker through a fuse terminal, and the first circuit breaker 29 is respectively connected to the first fuse terminal The second fuse terminal 21, the second fuse terminal 22, the third fuse terminal 23, and the fourth fuse terminal 24 are connected to the live wire of the first switch power supply 11, the live wire of the second switch power supply 12, the live wire of the third switch power supply 13, and the live wire of the fourth switch power supply 14, and the second circuit breaker 30 is connected to the live wire of the fifth switch power supply 15, the live wire of the sixth switch power supply 16, the live wire of the seventh switch power supply 17, and the live wire of the eighth switch power supply 18 through the fifth fuse terminal 25, the sixth fuse terminal 26, the seventh fuse terminal 27, and the eighth fuse terminal 28 respectively;

[0085] A switch power terminal block module 67 (including a first switch power terminal block 31, a second switch power terminal block 32, a third switch power terminal block 33, a fourth switch power terminal block 34, a fifth switch power terminal block 35, a sixth switch power terminal block 36, a seventh switch power terminal block 37, and an eighth switch power terminal block 38) connecting the first circuit breaker 29 and the second circuit breaker 30 to the switch power neutral line,

[0086] A power supply redundancy module 65 (including a first power supply redundancy unit 1, a second power supply redundancy unit 2, a third power supply redundancy unit 3, a fourth power supply redundancy unit 4, a fifth power supply redundancy unit 5, a sixth power supply redundancy unit 6, a seventh power supply redundancy unit 7, and an eighth power supply redundancy unit 8) is provided for performing two-by-two redundancy through eight switching power supplies.

[0087] Three power monitoring relays for monitoring external power frequency power, namely, a first power monitoring relay 51, a second power monitoring relay 52, and a third power monitoring relay 53,

[0088] Connect the power monitoring relay output for monitoring the external power frequency power supply to the first DCS terminal block 19 of the DCS, eight power monitoring relay modules 58 for monitoring eight switching power supplies (a fourth power monitoring relay 41, a fifth power monitoring relay 42, a sixth power monitoring relay 43, a seventh power monitoring relay 44, an eighth power monitoring relay 45, a ninth power monitoring relay 46, a tenth power monitoring relay 47, and an eleventh power monitoring relay 48);

[0089] Connect the power monitoring relay module 58 output to the second DCS terminal block of the DCS,

[0090] Among them, the live wire inputs of the eight switch power supplies (the first switch power supply 11, the second switch power supply 12, the third switch power supply 13, the fourth switch power supply 14, the fifth switch power supply 15, the sixth switch power supply 16, the seventh switch power supply 17, and the eighth switch power supply 18) are connected to the first to eighth fuse terminals (the first fuse terminal 21, the second fuse terminal 22, the third fuse terminal 23, the fourth fuse terminal 24, the fifth fuse terminal 25, the sixth fuse terminal 26, the seventh fuse terminal 27, and the eighth fuse terminal 28), and the neutral wire input is connected to the output end of the switch power terminal block module 67 (the first switch power terminal block 31, the second switch power terminal block 32, the third switch power terminal block 33, the fourth switch power terminal block 34, the fifth switch power terminal block 35, the sixth switch power terminal block 36, the seventh switch power terminal block 37, and the eighth switch power terminal block 38);

[0091] In sequence, one group of power outputs of the first switch power supply 11 and the fifth switch power supply 15 are connected to the first power supply redundancy unit 1 for redundancy, and another group of power outputs are connected to the fifth power supply redundancy unit 5 for redundancy; one group of power outputs of the second switch power supply 12 and the sixth switch power supply 16 are connected to the second power supply redundancy unit 2 for redundancy, and another group of power outputs are connected to the sixth power supply redundancy unit 6 for redundancy; one group of power outputs of the third switch power supply 13 and the seventh switch power supply 17 are connected to the third power supply redundancy unit 3 for redundancy, and another group of power outputs are connected to the seventh power supply redundancy unit 7 for redundancy; one group of power outputs of the fourth switch power supply 14 and the eighth switch power supply 18 are connected to the fourth power supply redundancy unit 4 for redundancy, and another group of power outputs are connected to the eighth power supply redundancy unit 8 for redundancy;

[0092] The redundant power outputs of the first redundant power unit 1 and the fifth redundant power unit 5 are connected to the power input terminal of the fire detection amplifier card rack 1 59, the redundant power outputs of the second redundant power unit 2 and the sixth redundant power unit 6 are connected to the power input terminal of the fire detection amplifier card rack 2 60, the redundant power outputs of the third redundant power unit 3 and the seventh redundant power unit 7 are connected to the power input terminal of the fire detection amplifier card rack 3 61, and the redundant power outputs of the fourth redundant power unit 4 and the eighth redundant power unit 8 are connected to the power input terminal of the fire detection amplifier card rack 4 62;

[0093] Each fire detection amplifier card rack is again provided with a power redundancy device 63, and a third circuit breaker 39 supplies power to the lighting equipment 57 in the cabinet;

[0094] The output terminals of the fourth power supply monitoring relay 41, the fifth power supply monitoring relay 42, the sixth power supply monitoring relay 43, the seventh power supply monitoring relay 44, the eighth power supply monitoring relay 45, the ninth power supply monitoring relay 46, the tenth power supply monitoring relay 47 and the eleventh power supply monitoring relay 48 are connected to the second DCS terminal block 10, and the output terminals of the first power supply monitoring relay 51, the second power supply monitoring relay 52 and the third power supply monitoring relay 53 are connected to the first DCS terminal block 19, and the second DCS terminal block 10 and the first DCS terminal block 19 are connected to the boiler combustion safety control system.

[0095] The utility model designs two switching power supplies and two power redundancy units for the five coal fire detectors on each floor. The power inputs of the two switching power supplies are APS and UPS respectively. The 24V power output by the switching power supply is given to two independent power redundancy units. The two redundant 24V outputs are finally used to power the fire detection equipment after mutual redundancy again.

[0096] The power output by the two-way switching power supply of the utility model after secondary redundancy can achieve the function of automatic switching. It is a simple and extremely safe uninterruptible power supply. At the same time, it can ensure that the output power supply has high stability and strong practicality, and avoid the boiler operation MFT caused by fire detection power supply failure to the greatest extent.

[0097] The utility model is designed with a matching fuse terminal in front of each switching power supply. During the normal operation of the equipment, each power supply can be inspected and maintained without affecting other equipment, and the inspection and maintenance are convenient.

[0098] The utility model is designed with three 220VAC power input monitoring relays, which can monitor the fire detection power input on the one hand, and transmit electrical signals to the DCS control system on the other hand, so as to monitor and alarm in real time and improve the safety and stability of the equipment.

[0099] The utility model is designed with 8 24V power input monitoring relays, which can monitor the fire detection power output on the one hand, and transmit electrical signals to the DCS control system on the other hand, so as to monitor and alarm in real time and improve the safety and stability of the equipment.

[0100] Embodiment 3

[0101] Figure 2 This is a schematic diagram of the overall structure of a fire detection power supply device according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the front structure of a fire detection power supply device according to an embodiment of the present utility model. Figure 1-Figure 3 As shown, according to an embodiment of the utility model, a fire detection power supply device includes a fire detection power supply system, and the fire detection power supply device includes: a power supply base plate 9 and four fire detection amplifier card racks arranged in a fire detection amplifier cabinet;

[0102] The power base plate 9 is provided with four layers, wherein:

[0103] The first layer is provided with a power redundancy module 65.

[0104] The second layer is provided with a switch power supply module 64,

[0105] The third layer is provided with a fuse terminal module 66, a switch power supply terminal block module 67, a power supply monitoring relay module 58, and a second DCS terminal block 10.

[0106] The fourth layer is provided with a first circuit breaker 29, a second circuit breaker 30, a third circuit breaker 39, a first terminal block 40, a second terminal block 49, a third terminal block 50, three power monitoring relays connected to the boiler combustion safety control system, and a first DCS terminal block 19;

[0107] The frame of the power base plate 9 is formed, and each layer is provided with a cable duct 20 for laying and protecting cables.

[0108] In the present embodiment, the fire detection power supply device includes a power base plate 9, which is arranged in the fire detection amplifier cabinet and is provided with a cable trough 20 for protecting the cables. The power base plate 9 adopts a standard card frame with a size of 12U, 19"; the first circuit breaker 29, the second circuit breaker 30, and the third circuit breaker 39 are placed adjacent to each other, and the power monitoring relay connected to the boiler combustion safety control system and the power monitoring relay in the power monitoring relay module 58 both adopt relays with indicator light functions; the switching power supplies in the switching power supply module 64 all adopt metal shells and guide rail type thin power supplies, the equipment occupies a small space and is easy to install; in addition, the switching power supply adopts a metal shell design to meet natural air cooling and facilitate effective heat dissipation of the equipment. Each power redundancy unit adopts a guide rail type thin module, the equipment occupies a small space and is easy to install.

[0109] All electronic components of the utility model are compact, with complete overall functions and small space occupation, which effectively utilizes the space of the system cabinet, has a high assembly rate of flame detectors, and saves space; in addition, all components are installed in a guide rail type, which is simple and labor-saving to install and maintain.

[0110] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0111] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fire detection power supply system, comprising a first power frequency power supply (54) and a second power frequency power supply (55), characterized in that: The first power frequency power supply (54) is electrically connected to the first circuit breaker (29), and the second power frequency power supply (55) is electrically connected to the second circuit breaker (30); The first circuit breaker (29) and the second circuit breaker (30) are both electrically connected to a switch power supply module (64); the switch power supply module (64) comprises four switch power supplies electrically connected to the first circuit breaker (29) and four switch power supplies connected to the second circuit breaker (30); The system also includes a power redundancy module (65) and four fire detection amplifier card racks; The power redundancy module (65) comprises eight power redundancy units, each of which is respectively connected to two switch power supplies in the switch power supply module (64); one of the two switch power supplies is connected to the first circuit breaker (29), and the other switch power supply is connected to the second circuit breaker (30); The eight redundant power supply units are divided into four groups, and the power input end of each fire detection amplifier card rack is connected to two redundant power supply units in one group.

2. The fire detection power supply system according to claim 1, characterized in that: The system further comprises: a fuse terminal module (66), wherein the fuse terminal module (66) comprises eight fuse terminals, each of which is connected in series between a live wire of the switching power supply and the first circuit breaker (29) or the second circuit breaker (30).

3. The fire detection power supply system according to claim 1, characterized in that: The system also includes: a third industrial frequency power supply (56), and the third industrial frequency power supply (56) is electrically connected to the cabinet lighting equipment (57) in the fire detection amplifier cabinet through a third circuit breaker (39).

4. The fire detection power supply system according to claim 3, characterized in that: The system further comprises: a first wiring terminal block (40), a second wiring terminal block (49), a third wiring terminal block (50), a first power supply monitoring relay (51), a second power supply monitoring relay (52), and a third power supply monitoring relay (53); The first power frequency power source (54) is connected to the first circuit breaker (29) via the first terminal block (40), the second power frequency power source (55) is connected to the second circuit breaker (30) via the second terminal block (49), and the third power frequency power source (56) is connected to the third circuit breaker (39) via the third terminal block (50); The first terminal block (40), the second terminal block (49), and the third terminal block (50) are connected to the first DCS terminal block (19) via the first power monitoring relay (51), the second power monitoring relay (52), and the third power monitoring relay (53), respectively.

5. The fire detection power supply system according to claim 1, characterized in that: The system further comprises: a switching power supply terminal block module (67), wherein the switching power supply terminal block module (67) comprises a plurality of switching power supply terminal blocks, and the neutral line of each switching power supply is connected to its corresponding circuit breaker via one of the switching power supply terminal blocks.

6. The fire detection power supply system according to claim 1, characterized in that: The system further comprises: a second DCS terminal block (10) and a power monitoring relay module (58), wherein the power monitoring relay module (58) comprises a plurality of power monitoring relays; Each of the switching power supplies is connected to the second DCS terminal block (10) via a power monitoring relay.

7. A fire detection power supply device, comprising the fire detection power supply system according to any one of claims 1 to 6, characterized in that: The device comprises: a power supply base plate (9) and four fire detection amplifier card racks arranged in the fire detection amplifier cabinet; The power base plate (9) is provided with four layers, wherein the first layer is provided with a power redundancy module (65), the second layer is provided with a switch power module (64), the third layer is provided with a fuse terminal module (66), a switch power terminal block module (67), a power monitoring relay module (58), and a second DCS terminal block (10), and the fourth layer is provided with a first circuit breaker (29), a second circuit breaker (30), a third circuit breaker (39), a first wiring terminal block (40), a second wiring terminal block (49), a third wiring terminal block (50), three power monitoring relays connected to the boiler combustion safety control system, and a first DCS terminal block (19); The frame constituting the power supply base plate (9) is provided with a cable trough (20) on each layer for laying and protecting cables.

8. The fire detection power supply device according to claim 7, characterized in that: The power base plate (9) adopts a standard card frame with a size of 12U, 19".

9. The fire detection power supply device according to claim 7, characterized in that: The power monitoring relay connected to the boiler combustion safety control system and the power monitoring relay in the power monitoring relay module (58) both use relays with indicator light functions.

10. The fire detection power supply device according to claim 7, characterized in that: The switch power supply module (64) adopts a metal shell and a guide rail type thin power supply.

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