WO2021036413A1 - Spraying protection method for fire truck, and spraying protection system for fire truck - Google Patents

Abstract

The present application relates to the technical field of firefighting, and provides a spraying protection method for a fire truck and a spraying protection system for a fire truck. A spraying pipeline is provided around a device to be protected and sprays a spray liquid to the device to be protected. The method comprises: obtain the real-time temperature t i of the device to be protected; if t i<t 1, the flow rate L of the spray liquid in the spraying pipeline is L=0; if t 1≤t i<t 2, the flow rate L of the spray liquid in the spraying pipeline is L=L 1; if t 2≤t i≤t 3, the flow rate L of the spray liquid in the spraying pipeline is L=L 2, wherein L 2>L 1. According to the spraying protection method for a fire truck provided by the present application, different spraying protection modes are used on the basis of different real-time temperatures of the device to be protected, thereby ensuring the reliability of protection of the device to be protected, and saving water resource and energy; the application of the spraying protection method to a spraying protection system for a fire truck solves, to a certain extent, the technical problem in the prior art that a spraying system cannot effectively adjust the spraying flow rate according to the fire situation.

Description

Spray protection method for fire truck and spray protection system for fire truck

Cross-references to related applications

This disclosure requires the priority of the Chinese patent application filed with the Chinese Patent Office on August 29, 2019, with the application number CN201910820767.1, titled "spray protection method for fire trucks and spray protection system for fire trucks" Right, the entire contents of which are incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the field of fire fighting technology, and in particular to a spray protection method for fire trucks and a spray protection system for fire trucks.

Background technique

Elevating fire trucks mainly rely on the boom to extend the working range. In the process of extinguishing the fire, the boom or working bucket sometimes needs to be close to the fire source and cross or even reach into the fire field and other high temperature areas. The boom structure is exposed to high temperature for a certain period In the future, the local temperature of the boom structure of the fire truck is too high, which will cause the mechanical performance of the boom structure to decrease and lose its working ability. Therefore, it is necessary to set up a sprinkler system to cool down to prevent the boom from working for a long time in a high temperature environment to maintain the continuous working ability of the fire truck.

The state of the sprinkler system in the prior art is usually on and off, and the sprinkler flow cannot be effectively adjusted according to the fire situation.

Summary of the invention

In view of this, the present disclosure provides a spray protection method for fire trucks and a spray protection system for fire trucks. The purpose is to solve to a certain extent that the sprinkler system in the prior art cannot effectively respond to the spray flow rate of the fire scene. Technical issues for adjustment.

In order to make the above objectives, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with accompanying drawings are described in detail below.

In a first aspect, the present disclosure provides a spray protection method for a fire truck. A spray pipeline is provided around a protected device of the fire truck, and the spray pipeline is configured to direct the protection to the protected device. Spraying liquid is sprayed around the area, and the spray protection method for fire trucks includes:

Acquiring the real-time temperature t _{i of the} protected device;

When t _i <t ₁ , the flow rate of spray liquid sprayed in the spray pipeline L=0;

When t ₁ ≤ t _{i ＜ t 2} , the flow rate of the spray liquid sprayed in the spray pipeline is L=L ₁ ;

When t ₂ ≤t _i ≤t ₃ , the flow rate of the spray liquid sprayed in the spray pipeline is L=L ₂ , L ₂ >L ₁ ;

Among them, t ₁ , t ₂ and t ₃ are the first preset temperature, the second preset temperature, and the third preset temperature, respectively.

Preferably, the spray protection method for fire trucks further includes:

At a flow rate in the spray line to spray the liquid state of L _1, t _i when dropped t ₀ <t _i <time t _1, the shower discharge line of the liquid spray The flow rate is reduced to L ₀ , where t ₀ is the fourth preset temperature, and L ₀ <L ₁ ;

At a flow rate of spray liquid in the spray line L ₀ is a state, when the time t _i t _i dropped ≤t _0, the flow rate of the liquid spray ejected spray line L = 0, t ₀ <t ₁ .

Preferably, the spray protection method for fire trucks further includes:

In the state where the flow rate of the spray liquid in the spray pipeline is L _2,

When t ₂ ≤ t _i ≤ t ₃ and ti remains unchanged, the flow rate L of the spray liquid in the spray pipeline remains unchanged;

When t ₂ ≤ t _i ≤ t ₃ and ti rises, the flow rate L of the spray liquid in the spray pipeline increases;

When t ₂ ≤t _i ≤t ₃ and ti decreases, the flow rate L of the spray liquid in the spray pipeline decreases.

Preferably, the spray protection method for fire trucks further includes:

In the state where the flow rate L of the spray liquid in the spray pipeline continues to increase, when t _i >t ₃ occurs, the flow rate of the spray liquid in the spray pipeline L=L ₃ , L ₃ Is the maximum flow rate of the spray liquid that can be sprayed in the spray pipeline;

When _{the time T of t i} > t ₃ lasts for more than s seconds, the alarm of the fire truck will sound an alarm.

Preferably, the spray protection method for fire trucks further includes:

When t _i decreases to t ₁ ≤ t _{i ＜ t 2} , the flow rate of the spray liquid in the spray pipeline is L=L ₂ ;

When reduced to t _i t ₀ <t _i <time t _1, the flow rate of the spray liquid in the spray _{line. 1} L to L;

When t _i decreases to t _i ≤ t ₀ , the flow rate L of the spray liquid in the spray pipeline decreases to L ₀ .

In a second aspect, the present disclosure also provides a spray protection system for a fire truck. The protected device is a fire truck boom. The spray protection system for the fire truck uses the spray protection system for the fire truck as described above. The protection method is spray protection of the fire truck boom.

Preferably, the sprinkler protection system of the fire truck includes:

The temperature sensor is arranged on the protected surface of the outer part of the arm frame of the fire truck, and is configured to obtain the real-time temperature t _i of the position where the temperature sensor is arranged;

A control unit configured to receive the temperature sensor acquires the temperature in real time t _i;

The spray valve is arranged on the spray pipeline;

The control unit is configured to control the flow rate L of the spray liquid sprayed in the spray pipeline by controlling the opening number and/or opening degree of the spray valve.

Preferably, the protected surface is a side wall of the fire truck boom, and the sprinkler pipeline corresponds to each side wall of the fire truck boom.

Preferably, the protected surface is a combination of adjacent side walls of the fire truck boom, and the spray pipeline corresponds to the combination of each adjacent side wall of the fire truck boom.

Preferably, the spray protection system of the fire truck further includes:

Nozzles are arranged on the spray pipeline;

The main infusion pipeline is in communication with the spray pipeline and is configured as the spray pipeline to transport spray liquid;

The spray valve is arranged between the spray pipeline and the main infusion pipeline; or,

The spray valve is arranged on the main infusion pipeline.

The spray protection method for fire trucks provided in the present disclosure adopts different spray protection methods according to different real-time temperatures of the protected device, which saves water while ensuring the reliability of the protection of the protected device. Resources and energy, the application of this spray protection method to the spray protection system of fire trucks solves to a certain extent the technical problem that the spray system in the prior art cannot effectively adjust the spray flow according to the fire situation.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the drawings that need to be used in the embodiments. It should be understood that the following drawings only show certain embodiments of the present disclosure, and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative work.

Figure 1 shows a schematic diagram of a second embodiment of a spray protection method for fire trucks;

Figure 2 shows a schematic diagram of a control logic diagram of a spray protection method for fire trucks;

Fig. 3 shows a schematic diagram from a first perspective of the first embodiment of the sprinkler protection system of the fire truck;

Fig. 4 shows a schematic diagram from a second perspective of the first embodiment of the sprinkler protection system of a fire truck;

Fig. 5 shows a schematic view from a first perspective of the second embodiment of the sprinkler protection system of the fire truck.

Reference signs:

1- main infusion pipeline; 2- spray valve; 3- spray pipeline; 4- fire truck boom; 5- connecting pipe.

detailed description

The technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be construed as a limitation of the present disclosure. In addition, the terms "first", "second" and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" or "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood in specific situations.

In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that this combination of technical solutions does not exist. , Is not within the scope of protection required by this disclosure.

Example one

Figure 2 shows a schematic diagram of the control logic diagram of the sprinkler protection method for a fire truck; Figure 3 shows a schematic diagram of the sprinkler protection system of the fire truck from a first perspective; Figure 4 shows the spray of the fire truck A schematic diagram of the protection system from a second perspective; FIG. 5 shows a schematic diagram of the second embodiment of the sprinkler protection system of a fire truck from a first perspective.

Referring to Figures 2 to 5, the spray protection method for fire trucks provided in this embodiment is mainly based on the settings of the following spray pipeline 3, which will be described in detail below.

In the following description, the type of spray liquid will be water as an example.

In this embodiment, the spray pipe 3 is provided around the protected device, and is configured to spray spray liquid around the protected device. In this embodiment, the spraying pipeline 3 can be connected to the main infusion pipeline 1. In this embodiment, the spraying pipeline 3 can be connected to the main infusion pipeline 1 through the connecting pipe 5, and the main infusion pipeline 1 is connected to the main infusion pipeline 1. The number and arrangement of the two tubes 5 will be described in detail in the following description.

In this embodiment, the spray pipe 3 is provided with nozzles on the outer side, so that the spray pipe 3 can fully protect the protected device, in this embodiment, every two adjacent nozzles on the same spray pipe 3 The sprayed water mist has a certain overlapped part.

Based on the above settings, in this embodiment, a spray valve 2 is also included. The spray valve can be a spray valve with a pressure regulating function, or a spray valve with only an opening and closing function. The specific type used will be in Specific instructions are given in the following description.

In addition, in this embodiment, the spray valve 2 with opening and closing functions adjusts the pressure of the water flow through the pipeline to adjust the flow rate of the water flow through the pipeline. This is because the nozzle flow rate is roughly the same as the pressure of the water flow provided. The square root of is directly proportional.

In addition, the spray pipeline 3 is also provided with a temperature sensor and a control unit, and the temperature sensor can be provided on the outer side of the protected device. As shown in Figure 2, the temperature sensor can transmit the real-time temperature at the position of the temperature sensor on the protected device to the control unit. The control unit is electrically connected to the spray valve 2 and controls the spray valve 2 through the received real-time temperature. In turn, the flow rate of the spray pipe 3 is controlled.

_{In this embodiment, the real-time temperature t i of the} installation location of the temperature sensor of the protected device acquired by the i-th temperature sensor is transmitted to the control unit.

In this embodiment, when t _i <t ₁ , the flow rate of the spray liquid in the spray pipe 3 is L=0. Among them, t _i is the real-time temperature transmitted from the temperature sensor to the control unit at the installation location of the temperature sensor mentioned in the above description, and t ₁ is the first preset temperature set in the control unit. If the real temperature t of the temperature sensor installed at the protection device _i is less than a first predetermined temperature t _1, the control unit controls the spray valve 2 in the closed state, then the flow line L 3 of the shower flow is 0, that is to say, in this case, the spray line 3 does not open the spray protection.

In this embodiment, when t ₁ ≤t _i <t ₂ , the flow rate of the spray liquid in the spray pipe 3 is L=L ₁ . Among them, t ₂ is the second preset temperature set in the control unit, and obviously t ₂ is greater than t ₁ . _{If the real-time temperature t i} at the installation location of the temperature sensor of the protected device reaches or exceeds the first preset temperature t ₁ , but is less than the second preset temperature t ₂ , the control unit will control the spray valve 2 to open and pass Adjust the spray valve 2 so that the flow rate L of the water flow in the spray pipe 3 is L ₁ , that is, in this case, the spray pipe 3 starts to open the spray protection.

In this embodiment, when t ₂ ≤ t _i ≤ t ₃ , the flow rate of the spray liquid (for example, water flow) in the spray pipe 3 is L=L ₂ , and L ₂ >L ₁ . _{If the real-time temperature t i} at the installation location of the temperature sensor of the protected device is greater than or equal to the second preset temperature t ₂ , but less than or equal to the third preset temperature t ₃ , then the control unit will control the spray valve 2 so that the spray pipe The flow rate L of the water flow in the path 3 is increased to L ₂ to improve the spray protection of the spray pipe 3 to the protected device.

According to the above spray protection method for fire trucks, this embodiment can _{protect the protected device with different spray methods according to different real-time temperatures t i} , so that the spray protection measures are effective and save water resources and energy.

As shown in Figures 3 to 5, this embodiment also provides a spray protection system for fire trucks, which uses the above spray protection method for fire trucks to protect the fire truck boom 4, that is, the above protected device It is the fire truck boom 4, and the temperature sensor is installed on the protected surface of the outer side of the fire truck boom 4.

In this embodiment, as shown in FIG. 5, the protected surface can be a side wall of the fire truck boom 4, or a combination of adjacent side walls of the fire truck boom 4. For example, the cross section of the fire truck boom 4 in this embodiment is rectangular, that is, the fire truck boom 4 has four side walls. Therefore, each side wall of the fire truck boom 4 can be used as the protected surface. A temperature sensor is provided, or, as shown in FIG. 3, two adjacent side walls of the fire truck arm frame 4 are used as a protected surface together, and a temperature sensor is provided.

In this embodiment, the position where the spray pipe 3 is set corresponds to the protected surface. The arrangement of the spray pipeline 3 will be described in detail below.

First, for a certain protected surface, a spray pipe 3 can be provided on the outer side of the protected surface, and a temperature sensor can be provided on the protected surface. Based on this arrangement, each spray pipeline 3 can be connected to the main infusion pipeline 1 through multiple communicating pipes 5, and multiple spray valves 2 can be respectively arranged on multiple communicating pipes 5, that is, the number of spray valves 2 It is also equal to the number of communicating pipes 5, and the spray valve 2 can be a spray valve with pressure adjustment capability.

In the above setting, after the temperature sensor transmits the real-time temperature at the installation position on the protected surface to the control unit, the control unit can control the opening number of the spray valve 2 with pressure adjustment capability and each spray according to the real-time temperature. The opening degree of the shower valve 2 controls the flow rate L of the spray liquid sprayed in the spray pipeline.

For the entire fire truck boom 4 composed of multiple protected surfaces, when different protected surfaces respond to different fire conditions, each protected surface can pass through the spray pipes 3, 3, and 3 installed on the corresponding surface. The spray valve 2 and the temperature sensor carry out independent adjustment of spray flow to realize flexible spray protection.

Second, for a certain surface to be protected, you can also use the above-mentioned setting method, but replace the spray valve 2 with pressure adjustment capability with a spray valve with only opening and closing functions. In this case, it is quite According to the above-mentioned real-time temperature, the control unit controls the spray liquid flow rate L sprayed from the spray pipe 3 only by controlling the opening number of the spray valve. This setting can also achieve the above-mentioned effect of independently adjusting the spray flow rate of each protected surface.

Third, as shown in Figures 3 to 5, each spray pipeline 3 is still set corresponding to each protected surface, but each spray pipeline is connected to the main infusion pipeline 1 through a connecting pipe 5, and is connected to the main infusion pipeline 1. Each connecting pipe 5 is equipped with a spray valve 2 with pressure adjustment capability. In this case, the control unit controls the spray valve in the spray pipeline by controlling the opening degree of the spray valve 2 according to the above-mentioned real-time temperature. Flow L. This setting can also realize independent adjustment of the spray flow rate of each protected surface.

In addition, based on the third, the spray valve 2 with pressure adjustment capability can also be installed on the main infusion pipeline 1, which is different from the above-mentioned first, second, and third solutions in that the number of the main infusion pipeline 1 is one. In this case, a corresponding main infusion pipeline 1 is provided for each protected surface, and the spray flow rate of each protected surface can also be independently adjusted.

Example two

Figure 1 shows a schematic diagram of a second embodiment of a spray protection method for fire trucks; Figure 2 shows a schematic diagram of a control logic diagram of a spray protection method for fire trucks; Figure 3 shows a fire truck A schematic view of the first view of the sprinkler protection system; Figure 4 shows a schematic view of the second view of the sprinkler protection system of a fire truck; Figure 5 shows a second embodiment of the sprinkler protection system of a fire truck Schematic diagram from a perspective.

1 to 5, the spray protection method for fire trucks in this embodiment is still based on the arrangement of the spray pipeline 3 in the first embodiment, that is, the main infusion pipeline 1 in this embodiment , The spray pipeline 3, the connecting pipe 5 and the spray valve 2 are the same as those in the first embodiment. In addition, in this embodiment, the alarm is electrically connected to the control unit, and is configured to issue a warning to alert the operator.

In this embodiment, the spray protection method for fire trucks adopted by the control unit will be described below.

_{In this embodiment, the real-time temperature t i of the} installation location of the temperature sensor of the protected device acquired by the i-th temperature sensor is transmitted to the control unit.

In this embodiment, in the same manner as in Example a, when t _i <t _1, the flow rate of the spray liquid in the spraying conduit 3 L = 0. Among them, t _i is the real-time temperature transmitted from the temperature sensor to the control unit at the installation location of the temperature sensor mentioned in the above description, and t ₁ is the first preset temperature set in the control unit. _{If the real-time temperature t i} at the installation location of the temperature sensor of the protected device is less than the first preset temperature t ₁ , the control unit will control the spray valve 2 to be closed, and the flow rate L of the water flow in the spray pipeline 3 is 0, that is, in this case, the spray line 3 does not open the spray protection.

In this embodiment, as in the first embodiment, when t ₁ ≦t _{i <t 2} , the flow rate of the spray liquid in the spray pipe 3 is L=L ₁ . Among them, t ₂ is the second preset temperature set in the control unit, and obviously t ₂ is greater than t ₁ . _{If the real-time temperature t i} at the installation location of the temperature sensor of the protected device reaches or exceeds the first preset temperature t ₁ , but is less than the second preset temperature t ₂ , the control unit will control the spray valve 2 to open and pass Adjust the spray valve 2 so that the flow rate L of the water flow in the spray pipeline 3 is L ₁ . In addition, if t _i directly rises to t ₂ ≤t _i ≤t ₃ , the following corresponding operation when _{t 2} ≤t _i ≤t _{3 is performed.}

In this embodiment, when the flow rate of the water flow in the spray pipe 3 is L ₁ , when t _i decreases to t ₀ ＜t _i ＜t ₁ , the flow rate of the spray liquid in the spray pipe 3 Decrease to L ₀ , where t ₀ is the fourth preset temperature, and L ₀ <L ₁ . If under the above-mentioned spray protection where the flow rate of the water flow in the spray pipe 3 is L _{1 , the real-time temperature t i} at the installation location of the temperature sensor of the protected device is reduced to the fourth preset temperature t ₀ and the first preset Between the temperature t ₁ , then the control unit will control the spray valve 2 to reduce the flow rate of the water flow in the spray pipe 3 to L ₀ to avoid waste of water resources. Further, the flow rate in the flow line 3 is L, if the spray protection sprinkler _1, t _i still up to t _2, t _i = is performed following an operation corresponding to ₂ t.

In this embodiment, further, when the flow rate of the spray liquid in the spray pipe 3 is L ₀ , when t _i decreases to t _i ≤ t ₀ , the spray liquid in the spray pipe 3 The flow rate L=0, t ₀ <t ₁ . If under the spray protection where the flow rate of the water flow in the spray pipe 3 is L _{0 , the real-time temperature t i} at the installation location of the temperature sensor of the protected device drops to the fourth preset temperature t ₀ or _{below t 0} , then The control unit will control the spray valve 2 to reduce the flow of the water flow in the spray pipe 3 to 0, that is, close the spray pipe 3 to further avoid the waste of water resources.

In this embodiment, when t ₂ ≤t _i ≤t ₃ , the flow rate of the spray liquid in the spray pipe 3 is L=L ₂ , and L ₂ >L ₁ . In other words, under the spray protection where the flow rate of the water flow in the spray pipe 3 is L _{1 , if the real-time temperature t i} at the installation location of the temperature sensor of the protected device still rises to be greater than or equal to the second preset temperature t ₂ , but less than or equal to the third preset temperature t ₃ , or t _i rises directly from _{below t 1} to this temperature range, then the control unit will control the spray valve 2 so that the flow rate L of the water flow in the spray pipe 3 Increase to L ₂ to improve the spray protection of the spray pipeline 3 to the protected device. In addition, optionally, under the spray protection of the spray liquid flow rate L=L _{2 in the spray pipe 3, when t 1} ≤ t _{i <t 2} , the following corresponding operations are performed, when t _{When i} rises directly above t ₃ , perform the following corresponding operations when _{t i} > t _3.

In this embodiment, the flow rate of the spray liquid in the spraying conduit 3 L ₂ for the next state:

When t ₂ ≤t _i ≤t ₃ and t _i remain unchanged, the shower spray liquid flow distribution in 3 L unchanged; if t ₂ ≤t _i ≤t ₃ and t _i is increased, spray spray liquid flow rate in line L 3 increased leaching; if t ₂ ≤t _i ≤t ₃ and t _i is decreased, the spraying flow rate of spray liquid drop line L 3. In this embodiment, the flow rate L of the spray liquid in the spray pipeline 3 remains unchanged, and the specific flow rate before increasing and decreasing is not specifically limited, as long as t ₂ ≤ t _{i ≤ t 3} , once t _i appears above The flow rate L of the spray liquid in the spray pipeline 3 can be changed synchronously. This dynamic adjustment ensures the best spray flow rate, takes into account the protection of the protected device, and reduces the waste of water resources and energy. Further, if the flow rate of the spray liquid in the spray pipe 3 is L ₂ or during the process of dynamic adjustment:

When t _i decreases to t ₁ ≤ t _{i ＜ t 2} , the flow rate of the spray liquid in the spray pipe 3 is L=L ₂ ; when t _i decreases to t ₀ ＜ t _i ＜ t ₁ , The flow rate L of the spray liquid in the spray pipeline 3 drops to L ₁ ; when t _i drops to t _i ≤ t ₀ , the flow rate L of the spray liquid in the spray pipeline 3 drops to L ₀ .

In this embodiment, the elapsed time t _i again lowered temperature range, to a correspondingly high flow rate of the spray solution than the corresponding temperature rise when heated once, this is because the cooling process by spraying liquid spray If the flow rate of the spray liquid is reduced, the actual temperature of the protected device will be higher than the real-time temperature t _i obtained after cooling. That is to say, during the cooling process, if the spray is corresponding to the same temperature range The flow rate of the liquid is the same as that in the heating process, which may cause the temperature of the protected device to rise again, so temperature control cannot be achieved well.

In this embodiment, when the flow rate L of the spray liquid in the spray pipe 3 is L ₂ or in the above-mentioned dynamic adjustment process, when t _i > t ₃ occurs, the spray in the spray pipe 3 The flow rate of the liquid L=L ₃ , and L ₃ is the maximum flow rate of the spray liquid in the spray pipe 3. If under the protection of the sprinkling water flow whose flow rate continues to increase, the real-time temperature t _i at the installation location of the temperature sensor of the protected device still rises above t ₃ , or the flow rate of the sprinkling liquid in the sprinkler pipeline 3 is L Under the spray protection of _{2 , t i} directly rises above t ₃ , then the control unit will control the spray valve 2 to increase the flow rate of the water flow in the spray pipe 3 to L ₃ , in this case, the spray pipe 3 The flow rate of the middle water stream reaches the maximum, and the protection of the protected device reaches the upper limit.

In this embodiment, when _{the time T when t i} > t ₃ lasts for more than s seconds, the alarm will sound an alarm. _{If under the spray protection of L 3} of the maximum water flow rate that the spray pipeline 3 can provide, _{the real-time temperature t i} at the installation location of the temperature sensor of the protected device is still greater than t ₃ and the time T lasts for more than s seconds, then The controller will control the alarm to send out an alarm to remind the operator to avoid damage to the protective device.

But the maximum water flow line 3 can be provided in the shower sprinkler protection L _3, the temperature sensor is mounted in real time at the fall protection apparatus to t _i t ₂ ≤t _i ≤t _3, the Perform the corresponding operations above.

This embodiment also provides a spray protection system for a fire truck. The spray pipeline 3 is arranged in the same manner as in the first embodiment, and therefore the beneficial effects are also the same, and will not be repeated here. It should be noted that for the fire truck boom 4, when an alarm is issued by the alarm in the above description, the operator can control the fire truck boom 4 to retract through the control unit.

The above are only the preferred embodiments of the present disclosure, and do not limit the scope of protection of the present disclosure. Under the innovative concept of the present disclosure, equivalent structural transformations made by using the contents of the specification and drawings of the present disclosure, or direct/indirect use All other related technical fields are included in the protection scope of the present disclosure.

Claims (10)

1. A spray protection method for a fire truck, wherein a spray pipeline is arranged around a protected device of the fire truck, and the spray pipeline is configured to spray spray liquid around the protected device , Characterized in that, the spray protection method for fire trucks includes:

   Acquiring the real-time temperature ti of the protected device;

   When t _i <t ₁ , the flow rate of spray liquid sprayed in the spray pipeline L=0;

   When t ₁ ≤ t _{i ＜ t 2} , the flow rate of the spray liquid sprayed in the spray pipeline is L=L ₁ ;

   When t ₂ ≤t _i ≤t ₃ , the flow rate of the spray liquid sprayed in the spray pipeline is L=L ₂ , L ₂ >L ₁ ;

   Among them, t ₁ , t ₂ and t ₃ are the first preset temperature, the second preset temperature, and the third preset temperature, respectively.
2. The spray protection method for fire trucks according to claim 1, wherein the spray protection method for fire trucks further comprises:

   At a flow rate in the spray line to spray the liquid state of L _1, t _i when dropped t ₀ <t _i <time t _1, the shower discharge line of the liquid spray The flow rate is reduced to L ₀ , where t ₀ is the fourth preset temperature, and L ₀ <L ₁ ;

   At a flow rate of spray liquid in the spray line L ₀ is a state, when the time t _i t _i dropped ≤t _0, the flow rate of the liquid spray ejected spray line L = 0, t ₀ <t ₁ .
3. The spray protection method for fire trucks according to claim 1, wherein the spray protection method for fire trucks further comprises:

   In the state where the flow rate of the spray liquid in the spray pipeline is L _2,

   When t ₂ ≤t _i ≤t ₃ and t _i remain unchanged, the flow rate of the spray liquid in the spray line L remains unchanged;

   When t ₂ ≤t _i ≤t ₃ and t _i rises, the flow rate of the spray liquid in the spray line L increases;

   When t ₂ ≤t _i ≤t ₃ and t _i is decreased, the flow rate of the liquid L dropped shower spray pipe.
4. The spray protection method for fire trucks according to claim 3, wherein the spray protection method for fire trucks further comprises:

   In the state where the flow rate L of the spray liquid in the spray pipeline continues to increase, when t _i >t ₃ occurs, the flow rate of the spray liquid in the spray pipeline L=L ₃ , L ₃ Is the maximum flow rate of the spray liquid that can be sprayed in the spray pipeline;

   When _{the time T of t i} > t ₃ lasts for more than s seconds, the alarm of the fire truck will sound an alarm.
5. The spray protection method for fire trucks according to claim 3, wherein the spray protection method for fire trucks further comprises:

   When t _i decreases to t ₁ ≤ t _{i ＜ t 2} , the flow rate of the spray liquid in the spray pipeline is L=L ₂ ;

   When reduced to t _i t ₀ <t _i <time t _1, the flow rate of the spray liquid in the spray _{line. 1} L to L;

   When t _i decreases to t _i ≤ t ₀ , the flow rate L of the spray liquid in the spray pipeline decreases to L ₀ .
6. A sprinkler protection system for a fire engine, wherein the protected device is a fire engine arm frame, and the sprinkler protection system of the fire engine uses the fire protection system described in any one of claims 1 to 5 The spray protection method of the vehicle carries out the spray protection of the arm frame of the fire truck.
7. The spray protection system of the fire truck according to claim 6, wherein the spray protection system of the fire truck comprises:

   The temperature sensor is arranged on the protected surface of the outer part of the arm frame of the fire truck, and is configured to obtain the real-time temperature t _i of the position where the temperature sensor is arranged;

   A control unit configured to receive the temperature sensor acquires the temperature in real time t _i;

   The spray valve is arranged on the spray pipeline;

   The control unit is configured to control the flow rate L of the spray liquid sprayed in the spray pipeline by controlling the opening number and/or opening degree of the spray valve.
8. The spray protection system of the fire truck according to claim 7, wherein the protected surface is a side wall of the fire truck boom, and the spray pipeline is connected to the fire truck boom. Each side wall corresponds to it.
9. The sprinkler protection system for a fire truck according to claim 7, wherein the protected surface is a combination of adjacent side walls of the fire truck boom, and the sprinkler pipeline is connected to the fire truck. Each of the adjacent side walls of the boom frame corresponds to the combination.
10. The spray protection system of the fire truck according to claim 7, wherein the spray protection system of the fire truck further comprises:

    Nozzles are arranged on the spray pipeline;

    The main infusion pipeline is in communication with the spray pipeline and is configured as the spray pipeline to transport spray liquid;

    The spray valve is arranged between the spray pipeline and the main infusion pipeline; or,

    The spray valve is arranged on the main infusion pipeline.

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