Dual-power conversion device with power monitoring function and electric control cabinet

Abstract

The utility model discloses a dual-power conversion device with a power monitoring function and an electric control cabinet, belongs to the technical field of power switches, and solves the problems that a power monitoring sensor and a dual-power converter in an existing fire-fighting power system are independently arranged, additional wiring and an independent transmission communication line of each port influence the stability and safety of the fire-fighting power system. Comprising a main power supply, a standby power supply, a power supply monitoring module and a dual-power conversion module. The main power supply and the standby power supply both employ a three-phase four-wire system, and a main power inlet wire of the main power supply is connected with a main power voltage input end of the power supply monitoring module and a first wire inlet end of the dual-power supply conversion module. A standby power inlet wire of the standby power supply is respectively connected with a standby power voltage input end of the power supply monitoring module and a second wire inlet end of the dual-power supply conversion module; the dual-power conversion module and the power monitoring module are integrated in one device, so that the connection and wiring work between devices is simplified, and the equipment installation cost and the overall equipment operation cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of power switches and relates to a dual power conversion device with power monitoring functions and an electric control cabinet. Background Art

[0002] In order to prevent and reduce the hazards of fire, modern buildings are equipped with multiple fire protection systems such as automatic fire alarm systems, fire emergency broadcast systems, automatic sprinkler systems, and electrical fire monitoring systems, which play an extremely important role in building fire safety. Whether these fire protection systems can work properly depends on the working status of the power supply of the fire protection equipment. If there is no reliable and stable power supply for fire protection equipment, even if the most advanced fire protection system is installed and the terminal fire extinguishing facilities are perfect, once a fire occurs, the entire fire protection system will not be able to operate normally, and early warning and fire extinguishing cannot be effectively achieved, and the consequences will be disastrous. According to Article 10.1.4 of the "Code for Fire Protection Design of Buildings" (GB50016-2014), it is clearly stated that the power supply for fire protection electrical equipment and fire elevators in the fire control room, fire pump room, smoke and exhaust fan room, etc. should be equipped with an automatic switching device at the last level distribution box of its distribution line.

[0003] Therefore, the power supply of fire-fighting equipment is the working basis of various types of fire-fighting systems, and a reliable and stable power supply of fire-fighting equipment is essential for the effective functioning of fire-fighting systems. However, due to the particularity of the power supply of fire-fighting equipment, people often become complacent about the daily inspection of the power supply of fire-fighting equipment due to long-term non-use. It is basically impossible to ensure that the power supply of fire-fighting equipment is always in good condition by relying on human measures. When a fire really occurs, the power supply reliability of fire-fighting equipment cannot be effectively guaranteed.

[0004] Therefore, in addition to strengthening management, it is necessary to take technical measures to discover and solve problems as early as possible. How to achieve real-time monitoring of the power supply of fire equipment from a technical defense means has always been highly valued by the public security fire department. After profoundly learning the lessons of fire accidents, in order to effectively strengthen the management of fire control rooms, the Fire Department of the Ministry of Public Security organized the compilation of the national standard "General Technical Requirements for Fire Control Rooms" (GB25506-2010), which made mandatory provisions that "the fire power supply monitor should be able to display the working status and undervoltage alarm information of the power supply and backup power supply of fire-fighting electrical equipment", and correspondingly stipulated that a fire equipment power supply monitoring system should be installed in the fire control room. This system plays a very important role in ensuring the good operation of building fire protection facilities, improving the fire safety management level of various units, and timely discovering fire equipment failures, preventing and reducing fire hazards.

[0005] like Figure 3 As shown, the existing fire equipment power monitoring sensor model PMAC513-A2 has a three-phase voltage sensor as its underlying principle, which can effectively monitor the voltage of the three-phase power supply. Figure 3 The dual power automatic converter has the characteristics of 2 input ports and 1 output port, so each voltage sensor needs to monitor three voltage points. The sensor displays the corresponding information by detecting the voltage status and voltage value of each port. In order to remotely monitor the voltage status of each key monitoring point, all voltage sensors are connected to the bus through 485 communication lines, and the data is then transmitted to the host in the monitoring room. Since the power monitoring sensor and the dual power converter are set separately, additional wiring is required in the fire control cabinet, and each port transmits data through a separate communication line. These problems affect the stability and safety of the fire power supply system. Utility Model Content

[0006] The technical solution of the utility model is used to solve the problem that the power monitoring sensor and the dual power converter in the existing fire power supply system are independently set, and the additional wiring and the separate transmission communication line for each port affect the stability and safety of the fire power supply system.

[0007] The utility model solves the above technical problems through the following technical solutions:

[0008] A dual power conversion device with a power monitoring function, comprising a main power supply, a backup power supply, a power monitoring module and a dual power conversion module; the main power supply and the backup power supply both adopt a three-phase four-wire system, the main power supply input line is respectively connected to the main power voltage input end of the power monitoring module and the first input line end of the dual power conversion module, and the backup power supply input line of the backup power supply is respectively connected to the backup power voltage input end of the power monitoring module and the second input line end of the dual power conversion module;

[0009] The A-phase outlet terminal of the dual power conversion module is connected to the A-phase current input terminal of the power monitoring module, the B-phase outlet terminal of the dual power conversion module is connected to the B-phase current input terminal of the power monitoring module, the C-phase outlet terminal of the dual power conversion module is connected to the C-phase current input terminal of the power monitoring module, and the neutral line outlet terminal of the dual power conversion module is grounded;

[0010] The CAN communication interface of the power supply monitoring module serves as an output terminal and is connected to a remote terminal via a CAN communication line.

[0011] Furthermore, the main power incoming lines 1L1, 1L2, 1L3, and 1L4 of the main power supply are all connected to the first input end of the dual power conversion module, the main power incoming line 1L1 of the main power supply is connected to the main power voltage input end Ua1 of the power supply monitoring module, the main power incoming line 1L2 of the main power supply is connected to the main power voltage input end Ub1 of the power supply monitoring module, the main power incoming line 1L3 of the main power supply is connected to the main power voltage input end Uc1 of the power supply monitoring module, and the main power incoming line 1L4 of the main power supply is connected to the main power voltage input end Un1 of the power supply monitoring module.

[0012] Furthermore, the backup power incoming lines 2L1, 2L2, 2L3, and 2L4 of the backup power supply are all connected to the first input end of the dual power conversion module, the backup power incoming line 2L1 of the backup power supply is connected to the backup power voltage input end Ua2 of the power monitoring module, the backup power incoming line 2L2 of the backup power supply is connected to the backup power voltage input end Ub2 of the power monitoring module, the backup power incoming line 2L3 of the backup power supply is connected to the backup power voltage input end Uc2 of the power monitoring module, and the backup power incoming line 2L4 of the backup power supply is connected to the backup power voltage input end Un2 of the power monitoring module.

[0013] Furthermore, the terminals A101 and N101 of the A-phase output terminal of the dual power conversion module are connected correspondingly to the terminals A+ and A- of the A-phase current input terminal of the power monitoring module to form an output terminal A-phase current monitoring loop; the terminals B201 and N201 of the B-phase output terminal of the dual power conversion module are connected correspondingly to the terminals B+ and B- of the B-phase current input terminal of the power monitoring module to form an output terminal B-phase current monitoring loop; the terminals C301 and N301 of the C-phase output terminal of the dual power conversion module are connected correspondingly to the terminals C+ and C- of the C-phase current input terminal of the power monitoring module to form an output terminal C-phase current monitoring loop.

[0014] Furthermore, the power interface of the power monitoring module is connected to a 24V power supply.

[0015] Furthermore, the model of the dual power conversion module is PBQN-PC-50A / 4P, and the model of the power monitoring module is JBF62P-ATV2A1.

[0016] The utility model also provides an electric control cabinet including the above dual power conversion device, and also includes a three-phase power meter, a surge suppressor, a control switch, a miniature circuit breaker, a first leakage circuit breaker and a second leakage circuit breaker;

[0017] The output terminal of the dual power conversion module is connected to the input terminal of the three-phase power meter, and the input terminal of the control switch, the input terminal of the miniature circuit breaker, the input terminal of the first leakage circuit breaker, and the input terminal of the second leakage circuit breaker are connected together and then connected to the output terminal of the three-phase power meter; one end of the surge suppressor is connected to the common connection point between the dual power conversion module and the three-phase power meter, and the other end of the surge suppressor is grounded;

[0018] The A-phase outlet terminal, the B-phase outlet terminal, and the C-phase outlet terminal of the dual power conversion module are connected together and then connected to one end of the control switch, and the other end of the control switch is respectively connected to the external fire smoke exhaust lamp, the fire control valve, the direct start-stop control line of the fire control room, and the first backup line;

[0019] The A-phase outlet terminal, the B-phase outlet terminal and the C-phase outlet terminal of the dual power conversion module are connected together and then connected to one end of a miniature circuit breaker, and the other end of the miniature circuit breaker is connected to a standby line;

[0020] The A-phase outlet terminal of the dual power conversion module is connected to one end of the first leakage circuit breaker, and the other end of the first leakage circuit breaker is connected to the external machine room lighting line;

[0021] The B-phase output terminal of the dual power conversion module is connected to one end of a second leakage circuit breaker, and the other end of the second leakage circuit breaker is connected to an external second backup line.

[0022] Furthermore, the surge suppressor model is ARD-SCB80 / 4P.

[0023] Furthermore, the three-phase power meter model is PMAC625-WCS.

[0024] Furthermore, the model of the control switch is KBJ-45BG, the model of the miniature circuit breaker is iC65H-D25, and the model of the first leakage circuit breaker and the second leakage circuit breaker are both iC65H-C16.

[0025] The advantages of the utility model are:

[0026] (1) The utility model integrates the dual power conversion module and the power monitoring module into one device, which simplifies the connection and wiring work between the devices and reduces the equipment installation cost and the overall cost of equipment operation;

[0027] (2) The power monitoring module monitors the voltage at the input end of the dual power conversion module and the current at the output end. The voltage and current parameters can provide more comprehensive power system status information, determine the stability of the power supply and monitor the load status;

[0028] (3) The power monitoring module sends the monitoring data directly to the remote terminal through the CAN communication interface. The monitoring background can obtain the status information of the input and output ends of the dual power conversion module at one time. Compared with the existing technology, each port transmits data through a separate communication line, which effectively improves the overall efficiency and response speed of the monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of a dual power conversion device with power monitoring function according to an embodiment of the utility model;

[0030] Figure 2 It is a structural diagram of a power monitoring module of a dual power conversion device with power monitoring function according to an embodiment of the utility model;

[0031] Figure 3 It is a structural diagram of the fire-fighting fan electric control cabinet system of the prior art;

[0032] Figure 4 It is a structural diagram of the fire-fighting fan electric control cabinet system of an embodiment of the utility model. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0034] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments of the specification:

[0035] Embodiment 1

[0036] like Figure 1-2 As shown, specifically, a dual power conversion device with a power monitoring function is disclosed, including a main power supply, a backup power supply, a power monitoring module and a dual power conversion module; the main power supply and the backup power supply both adopt a three-phase four-wire system, the main power incoming line of the main power supply is respectively connected to the main power voltage input end of the power monitoring module and the first incoming line end of the dual power conversion module, and the backup power incoming line of the backup power supply is respectively connected to the backup power voltage input end of the power monitoring module and the second incoming line end of the dual power conversion module;

[0037] The A-phase outlet terminal of the dual power conversion module is connected to the A-phase current input terminal of the power monitoring module, the B-phase outlet terminal of the dual power conversion module is connected to the B-phase current input terminal of the power monitoring module, the C-phase outlet terminal of the dual power conversion module is connected to the C-phase current input terminal of the power monitoring module, and the neutral line outlet terminal of the dual power conversion module is grounded;

[0038] The CAN communication interface of the power supply monitoring module is used as an output terminal and is connected to a remote terminal via a CAN communication line;

[0039] The power interface of the power monitoring module is connected to a 24V power supply through a power line.

[0040] Specifically, the main power incoming lines 1L1, 1L2, 1L3, and 1L4 of the main power supply are all connected to the first input end of the dual power conversion module, the main power incoming line 1L1 of the main power supply is connected to the main power voltage input end Ua1 of the power supply monitoring module, the main power incoming line 1L2 of the main power supply is connected to the main power voltage input end Ub1 of the power supply monitoring module, the main power incoming line 1L3 of the main power supply is connected to the main power voltage input end Uc1 of the power supply monitoring module, and the main power incoming line 1L4 of the main power supply is connected to the main power voltage input end Un1 of the power supply monitoring module;

[0041] The backup power incoming lines 2L1, 2L2, 2L3, and 2L4 of the backup power supply are all connected to the first input end of the dual power conversion module, the backup power incoming line 2L1 of the backup power supply is connected to the backup power voltage input end Ua2 of the power monitoring module, the backup power incoming line 2L2 of the backup power supply is connected to the backup power voltage input end Ub2 of the power monitoring module, the backup power incoming line 2L3 of the backup power supply is connected to the backup power voltage input end Uc2 of the power monitoring module, and the backup power incoming line 2L4 of the backup power supply is connected to the backup power voltage input end Un2 of the power monitoring module;

[0042] Specifically, the terminals A101 and N101 of the A-phase output terminal of the dual power conversion module are correspondingly connected to the terminals A+ and A- of the A-phase current input terminal of the power monitoring module, forming an output terminal A-phase current monitoring loop for monitoring the A-phase current. Monitoring the current condition at the output terminal can help evaluate the actual consumption of the system load, ensure that the system does not exceed the safe current limit, prevent cable overheating or equipment damage, and facilitate energy efficiency management and fault diagnosis.

[0043] The terminals B201 and N201 of the B-phase output terminal of the dual power conversion module are correspondingly connected to the terminals B+ and B- of the B-phase current input terminal of the power monitoring module to form an output terminal B-phase current monitoring loop; the terminals C301 and N301 of the C-phase output terminal of the dual power conversion module are correspondingly connected to the terminals C+ and C- of the C-phase current input terminal of the power monitoring module to form an output terminal C-phase current monitoring loop.

[0044] Specifically, the model of the dual power conversion module in the present invention is PBQN-PC-50A / 4P, and the model of the power monitoring module is JBF62P-ATV2A1.

[0045] like Figure 4 As shown, the utility model also provides an electric control cabinet including the above-mentioned dual power conversion device, and also includes a three-phase power meter, a surge suppressor, a control switch, a miniature circuit breaker, a first leakage circuit breaker and a second leakage circuit breaker;

[0046] The output end of the dual power conversion module is connected to the input end of the three-phase power meter. The input end of the control switch, the input end of the miniature circuit breaker, the input end of the first leakage circuit breaker, and the input end of the second leakage circuit breaker are connected together and then connected to the output end of the three-phase power meter; one end of the surge suppressor is connected to the common connection point between the dual power conversion module and the three-phase power meter, and the other end of the surge suppressor is grounded.

[0047] Specifically, the A-phase outlet terminal, the B-phase outlet terminal, and the C-phase outlet terminal of the dual power conversion module are connected together and then connected to one end of the control switch, and the other end of the control switch is respectively connected to the external fire smoke exhaust lamp, the fire control valve, the direct start-stop control line of the fire control room, and the first backup line;

[0048] The A-phase outlet terminal, the B-phase outlet terminal and the C-phase outlet terminal of the dual power conversion module are connected together and then connected to one end of a miniature circuit breaker, and the other end of the miniature circuit breaker is connected to a standby line;

[0049] The A-phase outlet terminal of the dual power conversion module is connected to one end of the first leakage circuit breaker, and the other end of the first leakage circuit breaker is connected to the external machine room lighting line;

[0050] The B-phase output terminal of the dual power conversion module is connected to one end of a second leakage circuit breaker, and the other end of the second leakage circuit breaker is connected to an external second backup line.

[0051] Specifically, the surge suppressor model described in the utility model is ARD-SCB80 / 4P, which is used to prevent electrical equipment from being damaged by voltage surges, extend the service life of the electrical equipment and maintain the stability of the system.

[0052] The three-phase power meter model is PMAC625-WCS, which is used to measure the quantity and calculate the electric energy in the fire fan electrical control cabinet.

[0053] The model of the control switch is KBJ-45BG, the model of the miniature circuit breaker is iC65H-D25, and the model of the first leakage circuit breaker and the second leakage circuit breaker are both iC65H-C16.

[0054] The dual power conversion module in the utility model can simultaneously accept two power lines of the main power supply and the backup power supply, with the main power supply as the common power input. When both the common power supply and the backup power supply are input, or only the common power supply is input, the conversion switch is automatically placed at the common end to connect the load output; only when the common power supply has no input and the backup power supply has input, the conversion switch is automatically placed at the backup end to connect the load output;

[0055] The power monitoring module and the dual power conversion module in the utility model are integrated into the same device, which simplifies the connection and wiring between the devices; by monitoring the voltage at the input end of the dual power conversion module, it is ensured whether the input power is reliable and stable and whether it is within the normal working range; and the current at the output end of the dual power conversion module is monitored to help evaluate the actual consumption of the load, ensure that the system does not exceed the safe current limit, and prevent cable overheating or equipment damage. Monitoring the voltage at the input end and the current at the output end, monitoring these two parameters can provide more comprehensive power system status information, help optimize operation and enhance safety; at the same time, the power monitoring module directly transmits the power conditions of the input and output ends of the power conversion module to the remote terminal through the CAN interface, avoiding each port from transmitting data through a separate communication line.

[0056] like Figure 2 As shown, the power monitoring module in the utility model is also provided with a 485 communication interface. The utility model can also send the status information of the input and output terminals of the dual power conversion module to the monitoring background through the 485 communication line. Compared with the prior art, each port transmits data through a separate communication line, which effectively improves the overall efficiency and response speed of the monitoring system.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual power conversion device with power monitoring function, characterized in that: It includes a main power supply, a backup power supply, a power monitoring module and a dual power conversion module; the main power supply and the backup power supply both adopt a three-phase four-wire system, the main power incoming line of the main power supply is respectively connected to the main power voltage input terminal of the power monitoring module and the first incoming line terminal of the dual power conversion module, and the backup power incoming line of the backup power supply is respectively connected to the backup power voltage input terminal of the power monitoring module and the second incoming line terminal of the dual power conversion module; The A-phase outlet terminal of the dual power conversion module is connected to the A-phase current input terminal of the power monitoring module, the B-phase outlet terminal of the dual power conversion module is connected to the B-phase current input terminal of the power monitoring module, the C-phase outlet terminal of the dual power conversion module is connected to the C-phase current input terminal of the power monitoring module, and the neutral line outlet terminal of the dual power conversion module is grounded; The CAN communication interface of the power supply monitoring module serves as an output terminal and is connected to a remote terminal via a CAN communication line.

2. A dual power conversion device with power monitoring function according to claim 1, characterized in that: The main power incoming lines 1L1, 1L2, 1L3, and 1L4 of the main power supply are all connected to the first input end of the dual power conversion module. The main power incoming line 1L1 of the main power supply is connected to the main power voltage input end Ua1 of the power supply monitoring module, the main power incoming line 1L2 of the main power supply is connected to the main power voltage input end Ub1 of the power supply monitoring module, the main power incoming line 1L3 of the main power supply is connected to the main power voltage input end Uc1 of the power supply monitoring module, and the main power incoming line 1L4 of the main power supply is connected to the main power voltage input end Un1 of the power supply monitoring module.

3. The dual power conversion device with power monitoring function according to claim 1, characterized in that: The backup power incoming lines 2L1, 2L2, 2L3, and 2L4 of the backup power supply are all connected to the first input end of the dual power conversion module, the backup power incoming line 2L1 of the backup power supply is connected to the backup power voltage input end Ua2 of the power monitoring module, the backup power incoming line 2L2 of the backup power supply is connected to the backup power voltage input end Ub2 of the power monitoring module, the backup power incoming line 2L3 of the backup power supply is connected to the backup power voltage input end Uc2 of the power monitoring module, and the backup power incoming line 2L4 of the backup power supply is connected to the backup power voltage input end Un2 of the power monitoring module.

4. The dual power conversion device with power monitoring function according to claim 1, characterized in that: The terminals A101 and N101 of the A-phase output terminal of the dual power conversion module are connected correspondingly to the terminals A+ and A- of the A-phase current input terminal of the power monitoring module to form an output terminal A-phase current monitoring loop; the terminals B201 and N201 of the B-phase output terminal of the dual power conversion module are connected correspondingly to the terminals B+ and B- of the B-phase current input terminal of the power monitoring module to form an output terminal B-phase current monitoring loop; the terminals C301 and N301 of the C-phase output terminal of the dual power conversion module are connected correspondingly to the terminals C+ and C- of the C-phase current input terminal of the power monitoring module to form an output terminal C-phase current monitoring loop.

5. The dual power conversion device with power monitoring function according to claim 1, characterized in that: The power interface of the power monitoring module is connected to a 24V power supply.

6. The dual power conversion device with power monitoring function according to claim 1, characterized in that: The model of the dual power conversion module is PBQN-PC-50A / 4P, and the model of the power monitoring module is JBF62P-ATV2A1.

7. An electric control cabinet comprising the dual power conversion device according to any one of claims 1 to 6, characterized in that: It also includes a three-phase power meter, a surge suppressor, a control switch, a miniature circuit breaker, a first leakage circuit breaker and a second leakage circuit breaker; The output terminal of the dual power conversion module is connected to the input terminal of the three-phase power meter, and the input terminal of the control switch, the input terminal of the miniature circuit breaker, the input terminal of the first leakage circuit breaker, and the input terminal of the second leakage circuit breaker are connected together and then connected to the output terminal of the three-phase power meter; one end of the surge suppressor is connected to the common connection point between the dual power conversion module and the three-phase power meter, and the other end of the surge suppressor is grounded; The A-phase outlet terminal, the B-phase outlet terminal, and the C-phase outlet terminal of the dual power conversion module are connected together and then connected to one end of the control switch, and the other end of the control switch is respectively connected to the external fire smoke exhaust lamp, the fire control valve, the direct start-stop control line of the fire control room, and the first backup line; The A-phase outlet terminal, the B-phase outlet terminal and the C-phase outlet terminal of the dual power conversion module are connected together and then connected to one end of a miniature circuit breaker, and the other end of the miniature circuit breaker is connected to a standby line; The A-phase outlet terminal of the dual power conversion module is connected to one end of the first leakage circuit breaker, and the other end of the first leakage circuit breaker is connected to the external machine room lighting line; The B-phase output terminal of the dual power conversion module is connected to one end of a second leakage circuit breaker, and the other end of the second leakage circuit breaker is connected to an external second backup line.

8. An electric control cabinet according to claim 7, characterized in that: The surge suppressor model is ARD-SCB80 / 4P.

9. The electric control cabinet according to claim 7, characterized in that: The three-phase power meter model is PMAC625-WCS.

10. The electric control cabinet according to claim 7, characterized in that: The model of the control switch is KBJ-45BG, the model of the miniature circuit breaker is iC65H-D25, and the model of the first leakage circuit breaker and the second leakage circuit breaker are both iC65H-C16.

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