Fire control equipment and fire emergency system

Abstract

The fire control equipment comprises a fire power supply circuit, a thermal relay and a fire monitoring circuit, the fire power supply circuit is connected with a power supply and a fire load, and the thermal relay is arranged on the fire power supply circuit and connected with the fire monitoring circuit. The thermal relay monitors the power supply current of the fire-fighting power supply circuit, and when the power supply current reaches an overload threshold value, the thermal relay conducts the fire-fighting monitoring circuit. When the fire-fighting monitoring circuit is switched on, a fire-fighting signal is generated. As the thermal relay can trigger the fire-fighting monitoring circuit to be switched on when the current flowing through the fire-fighting power supply circuit reaches the overload threshold value, fire-fighting accidents under the current overload condition can be monitored, the fire-fighting monitoring circuit can be switched on in time, and the monitoring accuracy of the fire-fighting accidents is improved.

Description

Technical Field

[0001] The present application relates to the field of fire protection technology, and in particular to a fire control device and a fire emergency system. Background Art

[0002] With the development of social economy, people's awareness of safety is getting higher and higher, which makes the design of fire power distribution more and more complicated. Usually, a fire monitoring circuit connected to the fire monitoring circuit is configured in the circuit. When the fire power supply circuit is detected to be overloaded, the fire monitoring circuit generates an alarm message.

[0003] However, the commonly used fire protection power supply circuit is protected by electromagnetic tripping circuit breakers, which mainly realize short-circuit protection. When the fire protection power supply circuit is overloaded, it does not work. If a fire accident occurs, such as a fire, the fire accident situation cannot be obtained in time, which delays the effective rescue time of the fire accident and brings huge hidden dangers to personal and property safety. Therefore, there is a problem in the current fire control process that the fire monitoring circuit cannot be accurately triggered to monitor the fire accident. Utility Model Content

[0004] Based on this, it is necessary to provide a fire control equipment and fire emergency system that can improve the monitoring accuracy of fire accidents in response to the above technical problems.

[0005] In a first aspect, the present application provides a fire control device, the fire control device comprising a fire power supply circuit, a thermal relay and a fire monitoring circuit, the fire power supply circuit is connected to a power supply and a fire load, the thermal relay is arranged in the fire power supply circuit and connected to the fire monitoring circuit;

[0006] The thermal relay monitors the power supply current of the fire power supply circuit. When the power supply current reaches an overload threshold, the thermal relay turns on the fire monitoring circuit; when the fire monitoring circuit is turned on, a fire signal is generated.

[0007] In one of the embodiments, the fire protection power supply circuit includes a short circuit protector, and the short circuit protector is connected to the power supply and the fire protection load.

[0008] In one embodiment, the short-circuit protector is an electromagnetic tripping circuit breaker.

[0009] In one of the embodiments, the fire monitoring circuit includes a fire alarm device, a monitoring power supply device and a switch, the fire alarm device is connected to the monitoring power supply device and the switch, the monitoring power supply device is connected to the switch, and the switch is connected to the thermal relay.

[0010] In one embodiment, the monitoring power supply device is a battery.

[0011] In a second aspect, the present application provides a fire emergency system, which includes a fire load, a power supply, and a fire control device as described in the above embodiments.

[0012] In one embodiment, the power supply is a three-phase power supply.

[0013] In one of the embodiments, the thermal relay includes a coil and an auxiliary contact, the coil is arranged in the fire power supply circuit and connected to the auxiliary contact, and the auxiliary contact is connected to the fire monitoring circuit.

[0014] In one embodiment, the number of the coils is three, which are respectively arranged on each phase line of the three-phase power supply, and each of the coils is connected to the auxiliary contact.

[0015] In one embodiment, the number of the auxiliary contact is one, and the auxiliary contact is connected to each of the coils.

[0016] The fire control equipment and fire emergency system include a fire power supply circuit, a thermal relay and a fire monitoring circuit. The fire power supply circuit is connected to a power supply and a fire load. The thermal relay is arranged in the fire power supply circuit and is connected to the fire monitoring circuit. The thermal relay monitors the power supply current of the fire power supply circuit. When the power supply current reaches the overload threshold, the thermal relay turns on the fire monitoring circuit. When the fire monitoring circuit is turned on, a fire signal is generated. Since the thermal relay can trigger the fire monitoring circuit to turn on when the current flowing through the fire power supply circuit reaches the overload threshold, it can realize the monitoring of fire accidents under current overload conditions, turn on the fire monitoring circuit in time, and improve the accuracy of monitoring fire accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic diagram of the structure of a fire control device in one embodiment;

[0018] FIG2 is a schematic diagram of the structure of a fire monitoring circuit in one embodiment;

[0019] FIG3 is a schematic diagram of the structure of a fire emergency system in one embodiment. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0022] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0023] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] The fire control device provided in the embodiment of the present application is used to provide fire emergency services. For example, when a fire hazard or other fire accident occurs, the fire control device can sense the fire accident and generate a corresponding fire signal, which can be used to prompt personnel to evacuate or provide timely rescue.

[0026] In one embodiment, as shown in FIG1 , a fire control device is provided, including a fire power supply circuit 102, a thermal relay 104 and a fire monitoring circuit 106. The fire power supply circuit 102 is connected to a power source and a fire load, and the thermal relay 104 is provided in the fire power supply circuit 102 and connected to the fire monitoring circuit 106. Specifically, the thermal relay 104 may be connected in series between the fire monitoring circuit 106 and the fire load, and is used to accurately monitor the power supply current of the fire power supply circuit 102.

[0027] Among them, the fire load is a load used for fire accidents, such as fire and security control rooms, fire emergency lighting or fire elevators, which are loads that can perform rescue operations when fire accidents occur.

[0028] The thermal relay monitors the power supply current of the fire protection power supply circuit. When the power supply current reaches the overload threshold, the thermal relay turns on the fire protection monitoring circuit. The fire protection monitoring circuit generates a fire protection signal when it is turned on, and the fire protection signal can indicate the occurrence of a fire protection accident.

[0029] Specifically, the thermal relay connects the fire power supply circuit and the fire monitoring circuit to monitor the power supply current of the fire power supply circuit. When the power supply current of the fire power supply circuit reaches the overload threshold, it means that the fire power supply circuit has been overloaded. At this time, there is a major safety hazard. It may be that a fire or other fire accident has occurred, and the fire control equipment needs to generate a fire signal in time. Then the thermal relay turns on the fire monitoring circuit, and the device that generates the fire signal in the fire monitoring circuit is energized to generate a corresponding fire signal.

[0030] When the fire protection power supply circuit does not reach the overload threshold, the thermal relay will not conduct the fire protection monitoring circuit, which means that the fire protection monitoring circuit is in a normally open state, which can reduce power consumption and increase the use time of the fire protection monitoring circuit. With the control of the thermal relay, the fire protection power supply circuit can be used for a long time for fire warning or fire alarm.

[0031] Among them, the overload threshold is the trigger parameter of the thermal relay. As the trigger current value of the thermal relay, when the current monitored by the thermal relay reaches the overload threshold, the thermal relay triggers a corresponding action to turn on the fire monitoring circuit. In fact, the required overload threshold can be determined based on the power and voltage of the connected fire power supply circuit and the type and specification of the connected fire load, and a thermal relay with the overload threshold can be selected. Therefore, this embodiment does not limit the model, parameters and specifications of the thermal relay.

[0032] In this embodiment, the fire control device includes a fire power supply circuit, a thermal relay and a fire monitoring circuit. The fire power supply circuit is connected to a power supply and a fire load. The thermal relay is arranged in the fire power supply circuit and is connected to the fire monitoring circuit. The thermal relay monitors the power supply current of the fire power supply circuit. When the power supply current reaches an overload threshold, the thermal relay turns on the fire monitoring circuit. When the fire monitoring circuit is turned on, a fire signal is generated. Since the thermal relay can trigger the fire monitoring circuit to turn on when the current flowing through the fire power supply circuit reaches the overload threshold, it is possible to monitor fire accidents under current overload conditions, turn on the fire monitoring circuit in time, and improve the accuracy of monitoring fire accidents.

[0033] In one embodiment, the fire power supply circuit includes a short-circuit protector, which is connected to the power supply and the fire load. A short-circuit protector can be provided between the power supply and the fire load, and the short-circuit protector is used to protect the fire power supply circuit when a short circuit occurs. The short-circuit protector of the present application can use an electromagnetic release type circuit breaker, which is also called an electromagnetic release. The electromagnetic release is a type of release, which only provides magnetic protection, that is, short-circuit protection. When the current is large enough, the magnetic field force generated drives its internal transmission mechanism to operate and cut off the circuit. It should be noted that the short-circuit protector can also be connected to the fire monitoring circuit. When the short-circuit protector detects that a short circuit occurs in the fire power supply circuit, the short-circuit protector operates, turns on the fire monitoring circuit, and can also enable the fire monitoring circuit to generate a fire signal. Furthermore, the fire monitoring circuit can also generate different fire signals according to different devices that trigger the conduction, such as a short-circuit protector or a thermal relay.

[0034] In this embodiment, by using an electromagnetic tripping circuit breaker as a short-circuit protector, the fire control device of the present application can also achieve short-circuit protection when achieving overload protection. The thermal relay achieves overload protection, and the short-circuit protector achieves short-circuit protection. This improves the comprehensiveness and applicability of the fire control device.

[0035] In one embodiment, as shown in Figure 2, the fire monitoring circuit 106 includes a fire alarm device 202, a monitoring power supply device 204 and a switch 206. The fire alarm device 202 is connected to the monitoring power supply device 204 and the switch 206. The monitoring power supply device 204 is connected to the switch 206. The switch 206 is connected to the thermal relay 104.

[0036] The switch is connected to the thermal relay and opens and closes following the action of the thermal relay. Specifically, when the power supply current of the fire power supply circuit monitored by the thermal relay reaches the overload threshold, the thermal relay operates and controls the switch to close. When the switch is closed, the monitoring power supply device and the fire alarm device are connected to form a loop, that is, the fire alarm device is powered and generates a fire signal.

[0037] Furthermore, the switch of the fire monitoring circuit can be a separately set up single-pole single-throw switch, or it can be an auxiliary contact of a thermal relay. In one embodiment, the thermal relay includes a coil and an auxiliary contact. The coil is arranged in the fire power supply circuit and connected to the auxiliary contact. The auxiliary contact serves as the switch of the fire monitoring circuit to realize the control of whether the fire monitoring circuit is turned on or off. In other words, in one embodiment, the fire monitoring circuit may include a fire alarm device and a monitoring power supply device. One end of the fire alarm device is connected to the monitoring power supply device, and the other end of the fire alarm device is connected to the monitoring power supply device through a thermal relay. Specifically, the other end of the fire alarm device is connected to the monitoring power supply device through the auxiliary contact of the thermal relay, and whether the fire alarm device is powered on is controlled by the action of the auxiliary contact of the thermal relay.

[0038] Exemplarily, the fire alarm device may be an alarm indicator light, or a siren, or an alarm device in the form of other sounds, lights, texts, smells, etc. The alarm in the form of sounds, lights, texts, smells, etc. output by the fire alarm device is the fire signal. In one embodiment, the monitoring power supply device is a battery, the positive pole of the battery is connected to the fire alarm device, and the negative pole of the battery is connected to the switch; or the positive pole of the battery is connected to the switch, and the negative pole of the battery is connected to the fire alarm device. Exemplarily, the battery may be a 380V battery.

[0039] Optionally, the monitoring power supply device may also be a voltage conditioning device, which is used to condition the voltage of the connected external power supply. Exemplarily, the voltage conditioning device may be a voltage regulator, and the conditioning process of the voltage regulator may be to condition the voltage of the external power supply to 380V. The external power supply may be the same as the power supply connected to the fire power supply circuit, that is, the power supply connected to the fire monitoring circuit is the power supply connected to the fire power supply circuit. At the same time, the monitoring power supply device may also include an external power supply and a voltage conditioning device.

[0040] Furthermore, the fire monitoring circuit may only include a fire alarm device, the electric energy may be supplied by a power supply connected to the fire power supply circuit, and the switch may be replaced by an auxiliary contact of a thermal relay. The circuit structure may be selected according to actual needs, and this application does not limit it.

[0041] Based on the same technical concept, an embodiment of the present application also provides a fire emergency system, which includes a fire load, a power supply and a fire control device as described in the above embodiments.

[0042] In one embodiment, the power supply is a three-phase power supply. The three-phase power supply includes three phase lines, each of which has an alternating current with equal amplitude, equal frequency, and a phase difference of 120°. Exemplarily, the AC voltage of the three-phase power supply is 380V. The fire power supply circuit of the fire control device includes power supply lines respectively connected to the three phase lines, each of which is connected to a fire load to supply power to the fire load.

[0043] Optionally, when the fire power supply circuit of the fire control device includes a short-circuit protector, the short-circuit protector may be three electromagnetic tripping circuit breakers, which are respectively arranged on three power supply lines to provide short-circuit protection for each power supply line. Alternatively, an integrated short-circuit protector may be provided, which can provide short-circuit protection for the three power supply lines at the same time.

[0044] Optionally, the power for the fire monitoring circuit can also be supplied by a three-phase power supply.

[0045] In one embodiment, the thermal relay includes a coil and an auxiliary contact. The coil is arranged in the fire power supply circuit and connected to the auxiliary contact. The auxiliary contact is connected to the fire monitoring circuit.

[0046] The coil is used to monitor the power supply current of the fire protection power supply circuit. When the power supply current reaches the overload threshold, the auxiliary contact is activated to turn on the fire protection monitoring circuit. The auxiliary contact can be a normally open contact. When the auxiliary contact is closed, the fire protection monitoring circuit generates a fire protection signal.

[0047] The model and type of the thermal relay are not limited. In one embodiment, the number of coils is three, which are respectively arranged on each phase line of the three-phase power supply, and each coil is connected to an auxiliary contact. In this embodiment, the thermal relay is a combined thermal relay, including three coils and three auxiliary contacts, wherein the three coils are respectively arranged on each phase line of the three-phase power supply, and are used to respectively monitor the power supply current of the three power supply lines of the fire power supply circuit. The three coils are respectively connected to their corresponding auxiliary contacts, and the three auxiliary contacts can all be connected to the switch of the fire monitoring circuit. When there is an auxiliary contact action, that is, when any power supply line of the fire power supply circuit is overloaded, the fire monitoring circuit can be turned on, so that the fire monitoring circuit generates a fire signal.

[0048] Optionally, the fire monitoring circuit includes three switches, each switch is connected to an auxiliary contact. In this case, the fire monitoring circuit can only be turned on when all three auxiliary contacts are actuated, that is, when all three power supply lines of the fire power supply circuit are overloaded, so that the fire monitoring circuit can generate a fire signal.

[0049] In one embodiment, the number of auxiliary contacts of the thermal relay is one, and the auxiliary contact is connected to each coil. In this embodiment, the thermal relay is an integrated thermal relay, including three coils and an auxiliary contact, wherein the three coils are respectively arranged on each phase line of the three-phase power supply, and are used to respectively monitor the power supply current of the three power supply lines of the fire power supply circuit. The three coils are all connected to this one auxiliary contact, and the auxiliary contact is connected to the switch of the fire monitoring circuit to control the fire monitoring circuit. In this case, if any power supply line of the fire power supply circuit is overloaded, the fire monitoring circuit can be turned on, so that the fire monitoring circuit generates a fire signal.

[0050] In this embodiment, by subdividing the structure of the thermal relay, overload protection in different situations is achieved, and overload protection can be performed for single-line overload or three-line overload. Thermal relays of different structures can be selected for overload protection according to needs, thereby improving the applicability of the fire emergency system.

[0051] In order to better understand the above solution, in combination with the application scenario shown in FIG3 , a detailed explanation is given below in combination with a specific embodiment.

[0052] In one embodiment, the fire emergency system is shown in FIG3 , and includes a three-phase power supply (L1, L2, and L3), a fire load, and a fire control device. The fire control device includes a fire power supply circuit, a thermal relay 104 (KH), and a fire monitoring circuit 106. The fire power supply circuit includes an electromagnetic tripping circuit breaker QF. In FIG3 , the fire monitoring circuit 106 may include a fire alarm device and a monitoring power supply device connected in sequence, and the conduction of the fire monitoring circuit 106 is controlled by the auxiliary contact of the thermal relay KH.

[0053] The fire load is connected to the three-phase power supply through the electromagnetic tripping circuit breaker QF, and the thermal relay KH is connected in series between the fire load and the electromagnetic tripping circuit breaker QF. When the power supply current through the thermal relay KH reaches the preset overload threshold, the auxiliary contact of the thermal relay is closed, and the fire alarm device in the fire monitoring circuit 106 is connected to the monitoring power supply device, triggering the alarm and generating a fire signal.

[0054] The three-phase power supply includes three phase lines, namely L1 line, L2 line and L3 line, and the auxiliary contact of the thermal relay KH is a normally open contact. The fire monitoring circuit 106 may also only include a fire alarm device, which is connected to the three-phase power supply through the auxiliary contact of the thermal relay KH.

[0055] When the fire power supply circuit is operating normally, the fire alarm device is always disconnected from the three-phase power supply and no fire signal is generated. When the power supply current through the thermal relay KH reaches the preset overload threshold, that is, when the fire power supply circuit is overloaded, the auxiliary contact of the thermal relay KH closes, connecting the fire monitoring device to the three-phase power supply, and then triggering the alarm to generate a fire signal. If the fire alarm device is a siren, the siren will sound; if the fire alarm device is an alarm indicator light, the indicator light will light up and send out a fire signal.

[0056] In this embodiment, by installing a thermal relay and a fire alarm device, when the fire power supply circuit is overloaded, the auxiliary contact of the thermal relay KH is closed, the fire monitoring device is connected to the three-phase power supply, and a fire signal is generated, so that firefighters can promptly learn of the overload of the fire power supply circuit and take corresponding measures in time to improve the accuracy of monitoring fire accidents.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A fire control device, characterized in that: The fire control device comprises a fire power supply circuit, a thermal relay and a fire monitoring circuit, wherein the fire power supply circuit is connected to a power source and a fire load, and the thermal relay is arranged on the fire power supply circuit and connected to the fire monitoring circuit; The thermal relay monitors the power supply current of the fire power supply circuit. When the power supply current reaches an overload threshold, the thermal relay turns on the fire monitoring circuit; when the fire monitoring circuit is turned on, a fire signal is generated.

2. The fire control device according to claim 1, characterized in that: The fire protection power supply circuit includes a short circuit protector, and the short circuit protector is connected to the power supply and the fire protection load.

3. The fire control equipment according to claim 2, characterized in that: The short-circuit protector is an electromagnetic tripping circuit breaker.

4. The fire control equipment according to claim 1, characterized in that: The fire monitoring circuit includes a fire alarm device, a monitoring power supply device and a switch. The fire alarm device is connected to the monitoring power supply device and the switch. The monitoring power supply device is connected to the switch. The switch is connected to the thermal relay.

5. The fire control equipment according to claim 4, characterized in that: The monitoring power supply device is a battery.

6. A fire emergency system, characterized in that: The fire emergency system comprises a fire load, a power supply and a fire control device as described in any one of claims 1-5.

7. The fire emergency system according to claim 6, characterized in that: The power supply is a three-phase power supply.

8. The fire emergency system according to claim 7, characterized in that: The thermal relay includes a coil and an auxiliary contact. The coil is arranged in the fire power supply circuit and connected to the auxiliary contact. The auxiliary contact is connected to the fire monitoring circuit.

9. The fire emergency system according to claim 8, characterized in that: The number of the coils is three, which are respectively arranged on each phase line of the three-phase power supply, and each coil is connected to the auxiliary contact.

10. The fire emergency system according to claim 8, characterized in that: The number of the auxiliary contact is one, and the auxiliary contact is connected to each of the coils.

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