Control device of fire extinguishing system
By designing a series control loop for temperature detectors and smoke detectors in the fire protection system, and combining intermediate relays and short-circuit protectors, the problems of complex control methods and resource consumption in the existing technology are solved, and the effects of simplifying the EMS interface and improving system flexibility are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-04-03
AI Technical Summary
Existing fire protection systems have complex control methods and consume a lot of resources, making it impossible to effectively utilize the status signal detection ports of the EMS system.
Design a control device for a fire protection system. A series control loop is formed between a temperature detector and a smoke detector and a control circuit. By using intermediate relays and short-circuit protectors, the logic judgment of the EMS is simplified and resource consumption is reduced.
It simplifies the trigger judgment process of the fire protection system, reduces the use of EMS interface resources, is compatible with most heat and smoke detectors on the market, and improves the flexibility and reliability of the system.
Smart Images
Figure CN224071050U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire protection, and more specifically, it relates to a control device for a fire protection system. Background Technology
[0002] In commercial and industrial high-voltage energy storage systems, the fire protection system is a crucial component for ensuring the safety of operators and their property. Therefore, timely, rapid, and accurate activation of the fire protection system is paramount. Common activation methods for fire protection systems include temperature-sensor-based activation and electrical activation. However, to prevent accidental activation, different temperature-sensor-based systems must be selected for different situations, and fixed trigger temperatures are neither flexible nor effective. Compared to the large size of the battery cabinet, temperature probes occupy less space and can only detect localized temperatures. If localized heat dissipation anomalies occur in the battery system, the fire protection system often cannot provide timely and rapid feedback. Therefore, traditional temperature-sensor-based fire protection systems have significant room for improvement.
[0003] Compared to conventional temperature-sensor-activated fire suppression systems, electric start-up offers significant advantages. Common EMS (Energy Management System) systems on the market communicate and work with BMS (Battery Management System) and air conditioning systems. The BMS system can monitor the temperature inside all battery packs, while the air conditioning system can monitor the temperature inside the battery cabinet. Furthermore, to increase the reliability of the fire suppression system, additional factors can be considered for electric start-up. Abnormal battery temperatures are often accompanied by smoke; using smoke combined with high temperature as the condition for electric start-up offers greater advantages.
[0004] The activation of the fire suppression system can remedy the situation after a fire breaks out, but it is better to extinguish the fire in time before it occurs. Energy storage systems generally include an EMS system. When the energy storage cabinet shows signs of smoke or high temperature, the information is fed back to the EMS system. The EMS system then directly issues power limiting or even shutdown commands to the entire energy storage system to reduce the power consumption of the equipment, thereby reducing the heat generated by the equipment and preventing the battery from overheating and catching fire.
[0005] Status detection is a passive dry contact, but electric start requires a 24V power supply. Currently, some temperature and smoke detectors on the market only have a dry contact for fire alarm triggering but not a dry contact for status detection. Is it possible to artificially create a status detection point by adding other electrical components to adapt to most temperature and smoke detectors on the market?
[0006] The conventional approach involves each heat and smoke detector transmitting their status signals directly to the EMS system when triggered separately. When triggered simultaneously, the EMS receives the signals and closes the dry contact point controlling the fire suppression system. This dry contact point is connected in series with the 24V power supply and the fire suppression system's electric start coil, allowing the 24V power to flow directly to the start coil and activate the fire suppression system. However, this approach occupies two status signal detection ports and one dry contact point on the EMS system. Given the numerous electrical devices the EMS system needs to control, this results in excessive resource consumption for the fire suppression system alone.
[0007] If the fire protection system is directly controlled through the EMS, both status variables must be detected. Otherwise, triggering either one will directly start the fire protection system. Could the activation dry contact be released so that the temperature and smoke sensors can directly determine whether to activate? If this is the case, the status information of the temperature and smoke sensors only needs to occupy one status signal detection port. Both the activation of the temperature and smoke sensors can be regarded as signals that require power reduction, which can also simplify the logic of the EMS. Utility Model Content
[0008] The technical problem to be solved by this utility model is to provide a control device for a fire protection system to address the shortcomings of the existing technology, thereby solving the technical problems of complex control methods and high resource consumption in existing fire protection systems.
[0009] The present invention discloses a control device for a fire protection system, which includes a control circuit, a temperature detector, and a smoke detector. The temperature detector and the smoke detector are both placed in the detection environment. The temperature detector and the smoke detector are electrically connected to the control circuit to form a series control loop for an electrically activated module that triggers a fire alarm. The control circuit is provided with a first trigger feedback loop for the temperature detector and a second trigger feedback loop for the smoke detector. The first trigger feedback loop and the second trigger feedback loop are simultaneously electrically connected to the feedback signal receiving end of the EMS operating system.
[0010] As a further improvement, the control circuit includes a power supply, a first intermediate relay, and a second intermediate relay. The positive terminal of the power supply is electrically connected to one end of the coil of the first intermediate relay, and the other end of the coil of the first intermediate relay is electrically connected to the negative terminal of the power supply through the first switch of the temperature detector.
[0011] The positive terminal of the power supply is electrically connected to one end of the coil of the second intermediate relay, and the other end of the coil of the second intermediate relay is electrically connected to the negative terminal of the power supply through the first switch of the smoke detector.
[0012] The positive terminal of the power supply is electrically connected to one end of the fire alarm-triggered electric start module via the first normally open switch of the first intermediate relay and the first normally open switch of the second intermediate relay connected in series. The other end of the fire alarm-triggered electric start module is electrically connected to the negative terminal of the power supply.
[0013] Furthermore, the first trigger feedback loop consists of two terminals of the EMS operating system, which are connected one-to-one with the two ends of the first normally open switch of the first intermediate relay and the second normally open switch of the first intermediate relay.
[0014] Furthermore, the second trigger feedback loop consists of two terminals of the EMS operating system, which are connected one-to-one with the two ends of the first normally open switch of the second intermediate relay and the second normally open switch of the second intermediate relay.
[0015] Furthermore, a first short-circuit protector is electrically connected between the coil of the first intermediate relay and the negative terminal of the power supply, and a second short-circuit protector is electrically connected between the coil of the second intermediate relay and the negative terminal of the power supply.
[0016] Furthermore, both the first and second short-circuit protectors are power resistors.
[0017] Beneficial effects
[0018] The advantages of this utility model are:
[0019] This utility model includes a control circuit, a temperature detector, and a smoke detector. Both the temperature detector and the smoke detector are placed in the detection environment and are electrically connected to the control circuit. The control circuit includes a delay module, and a fault feedback circuit is provided between the control circuit and the EMS operating system. Compared to traditional temperature-triggered systems that directly use the fire alarm system, this design adds triggering criteria. Compared to using the EMS to trigger the fire alarm system, it reduces the use of EMS interface resources, simplifies the process, and is compatible with most temperature / smoke detectors on the market, even those with only one fire alarm trigger point. Attached Figure Description
[0020] Figure 1 This is a circuit diagram of the control device of this utility model.
[0021] Among them: U1-EMS operating system, U2-temperature detector, U3-smoke detector, KM1-coil of the first intermediate relay, KM2-coil of the second intermediate relay, KM1-1-first normally open switch of the first intermediate relay, KM1-2-second normally open switch of the first intermediate relay, KM2-1-first normally open switch of the second intermediate relay, KM2-2-second normally open switch of the second intermediate relay, KM3-first time delay relay, Q-electric start module triggered by fire alarm, KA1-first switch of temperature detector, KA2-first switch of smoke detector, R1-first short circuit protector, R2-second short circuit protector. Detailed Implementation
[0022] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.
[0023] See Figure 1 This utility model discloses a control device for a fire protection system. The device includes a control circuit, a temperature detector U2, and a smoke detector U3. Both temperature detector U2 and smoke detector U3 are placed in the detection environment and are electrically connected to the control circuit to form a series control loop for an electrically activated module Q that triggers a fire alarm. The control circuit includes a first trigger feedback loop for temperature detector U2 and a second trigger feedback loop for smoke detector U3. Both the first and second trigger feedback loops are electrically connected to the feedback signal receiving terminal of the EMS operating system U1. The electrically activated module Q, triggered by the fire alarm, is used to activate the fire protection system.
[0024] The control circuit includes a power supply, a first intermediate relay, and a second intermediate relay. The positive terminal of the power supply is electrically connected to one end of the coil KM1 of the first intermediate relay, and the other end of the coil KM1 of the first intermediate relay is electrically connected to the negative terminal of the power supply through the first switch KA1 of the temperature detector.
[0025] The positive terminal of the power supply is electrically connected to one end of the coil KM2 of the second intermediate relay, and the other end of the coil KM2 of the second intermediate relay is electrically connected to the negative terminal of the power supply through the first switch KA2 of the smoke detector.
[0026] The positive terminal of the power supply is electrically connected to one end of the fire alarm-triggered electric start module Q through the first normally open switch KM1-1 of the first intermediate relay and the first normally open switch KM2-1 of the second intermediate relay, which are connected in series. The other end of the fire alarm-triggered electric start module Q is electrically connected to the negative terminal of the power supply.
[0027] The first trigger feedback loop consists of two terminals of the EMS operating system U1, which are connected one-to-one with the two ends of the first normally open switch KM1-1 and the second normally open switch KM1-2 of the first intermediate relay. The first trigger feedback loop is used to trigger the temperature detector U2.
[0028] The second trigger feedback circuit consists of two terminals of the EMS operating system U1, which are connected one-to-one with the two ends of the first normally open switch KM2-1 and the second normally open switch KM2-2 of the second intermediate relay. The second trigger feedback circuit is used to provide trigger feedback for the smoke detector U3.
[0029] A first short-circuit protector R1 is electrically connected between the coil KM1 of the first intermediate relay and the negative terminal of the power supply, and a second short-circuit protector R2 is electrically connected between the coil KM2 of the second intermediate relay and the negative terminal of the power supply. Both the first short-circuit protector R1 and the second short-circuit protector R2 are power resistors. The first short-circuit protector R1 and the second short-circuit protector R2 are installed to prevent a short circuit in the intermediate relay coils that could render the system unusable.
[0030] The power supply voltage is 24V.
[0031] The working principle of this utility model is as follows:
[0032] When the operating environment of the equipment experiences high temperatures, the temperature detector U2 is triggered, causing its first switch KA1 to close. This energizes the coil KM1 of the first intermediate relay, which is connected in series with the first switch KA1. Consequently, the first normally open switches KM1-1 and KM1-2 of the first intermediate relay close simultaneously. The signal output terminal of the EMS operating system U1 outputs a signal to the signal receiver. The signal received by the EMS operating system U1 changes from an open state to a closed state. The EMS operating system displays a temperature / smoke alarm fault and simultaneously issues a power reduction command to the energy storage system. After reducing power consumption, the equipment dissipates heat, and the temperature drops to normal. Once the above dry contact states return to normal, the alarm is cleared.
[0033] When smoke appears in the detection environment where the equipment is operating, the smoke detector U3 detects smoke and triggers it, causing the first switch KA2 of the smoke detector to close. This energizes the coil KM2 of the second intermediate relay connected in series with the smoke detector, causing the first normally open switch KM2-1 and the second normally open switch KM2-2 of the second intermediate relay to close simultaneously. The signal output terminal of the EMS operating system U1 outputs a signal to the signal receiving terminal. The signal received by the EMS operating system U1 changes from an open state to a closed state. The EMS operating system U1 displays a temperature / smoke alarm fault and simultaneously issues a power reduction command to the energy storage system. After reducing power consumption, the equipment dissipates heat. If the smoke is a false trigger due to high temperature, the state returns to normal after cooling down.
[0034] When smoke and high temperature occur simultaneously in the detection environment where the equipment is operating, and smoke detector U3 and temperature detector U2 are triggered, the coils KM1 and KM2 of the first intermediate relay are energized simultaneously. This causes the first normally open switch KM1-1 and KM1-2 of the first intermediate relay, the first normally open switch KM2-1 and the second normally open switch KM2-2 of the second intermediate relay to close simultaneously. The signal output terminal of the EMS operating system U1 outputs a signal to the signal receiving terminal. The EMS electrically connected to the EMS operating system U1 experiences a temperature / smoke alarm fault. At the same time, the fire alarm-triggered electric start module Q is energized, triggering the fire protection system. The fire protection system extinguishes the abnormal high-temperature fire that occurs inside the energy storage equipment.
[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.
Claims
1. A control device for a fire protection system, characterized in that The device comprises a control circuit, a temperature detector (U2) and a smoke detector (U3), the temperature detector (U2) and the smoke detector (U3) are arranged in a detection environment, the temperature detector (U2) and the smoke detector (U3) are electrically connected with the control circuit to form a series control loop of an electric starting module (Q) triggered by a fire alarm, the control circuit is provided with a first trigger feedback loop of the temperature detector (U2) and a second trigger feedback loop of the smoke detector (U3), and the first trigger feedback loop and the second trigger feedback loop are electrically connected with a feedback signal receiving end of an EMS operation system (U1) at the same time.
2. A control device for a fire protection system according to claim 1, characterized in that The control circuit comprises a power supply, a first intermediate relay and a second intermediate relay, one end of a coil (KM1) of the first intermediate relay is electrically connected with a positive electrode of the power supply, and the other end of the coil (KM1) of the first intermediate relay is electrically connected with a negative electrode of the power supply through a first switch (KA1) of the temperature detector; one end of a coil (KM2) of the second intermediate relay is electrically connected with the positive electrode of the power supply, and the other end of the coil (KM2) of the second intermediate relay is electrically connected with the negative electrode of the power supply through a first switch (KA2) of the smoke detector; the positive electrode of the power supply is electrically connected with one end of an electric starting module (Q) triggered by a fire alarm through a first normally open switch (KM1-1) of the first intermediate relay and a first normally open switch (KM2-1) of the second intermediate relay connected in series, and the other end of the electric starting module (Q) triggered by the fire alarm is electrically connected with the negative electrode of the power supply.
3. A control device for a fire protection system according to claim 2, wherein, The first trigger feedback loop is composed of two terminals of an EMS operation system (U1) connected in one-to-one correspondence between two ends of a first normally open switch (KM1-1) of the first intermediate relay and a second normally open switch (KM1-2) of the first intermediate relay.
4. A control device for a fire protection system according to claim 2, wherein, The second trigger feedback loop is composed of two terminals of the EMS operation system (U1) connected in one-to-one correspondence between two ends of a first normally open switch (KM2-1) of the second intermediate relay and a second normally open switch (KM2-2) of the second intermediate relay.
5. A control device for a fire protection system according to claim 2, wherein, A first short-circuit protector (R1) is electrically connected between the coil (KM1) of the first intermediate relay and the negative electrode of the power supply, and a second short-circuit protector (R2) is electrically connected between the coil (KM2) of the second intermediate relay and the negative electrode of the power supply.
6. A control device for a fire protection system according to claim 5, wherein, The first short-circuit protector (R1) and the second short-circuit protector (R2) are both power resistors.