Device for testing control of polymorphic foam on flowing fire

The present invention discloses a device for testing control of polymorphic foam on flowing fire, comprising a test bench, a combustible liquid injecting mechanism and a polymorphic foam spraying mechanism. The combustible liquid injecting mechanism and the polymorphic foam spraying mechanism are relatively arranged on the test bench. The combustible liquid injecting mechanism can spray combustible liquid to the test bench. The polymorphic foam spraying mechanism can spray polymorphic foam to the test bench, and the spraying direction of the polymorphic foam is relative to the spraying direction of the combustible liquid. The present invention can be used for testing and observing cut-off and control effects of polymorphic foam on combustible liquid flowing fire.

TECHNICAL FIELD

The present invention relates to the technical field of fire fighting equipment, and in particular to a device for testing control of polymorphic foam on flowing fire.

BACKGROUND

In China, the petrochemical industry is very important and the chemical industry has a history of nearly a hundred years. Rapid development of the petrochemical industry inevitably causes large increase of storage and transportation amount of combustible liquid. Once generating leakage, the combustible liquid is very easy to cause fire hazards. If a single oil tank generates leakage, fire or explosion accidents, flowing fire may diffuse to cause linked disasters in one area so as to not only seriously threaten the safety of people and facilities, but also cause secondary disasters such as large-area environmental pollution and the like. However, the existing fire technology has a technical problem that combustible liquid flowing fire cannot be highly efficiently prevented and controlled. Therefore, how to effectively prevent and extinguish the combustible liquid flowing fire has become a serious problem urgent to be solved.

For this reason, a person of skill in the art provides a polymorphic foam fire-fighting technology. In such technology, polymorphic foam is prepared by a foaming agent and organic acid, wherein the foaming agent is formed by a surfactant, an alkalescent aqueous solution and a few thermoplastic powders. The foaming agent has the characteristic and advantage of quick solidification when extinguishing the combustible liquid flowing fire. However, it is unknown whether the polymorphic foam can effectively prevent and extinguish the combustible liquid flowing fire. Therefore, to determine the control effect of the polymorphic foam on the flowing fire, it is necessary to research a device for testing control of polymorphic foam on flowing fire.

SUMMARY

An objective of the present invention is to provide a device for testing control of polymorphic foam on flowing fire to solve problems in the prior art as well as to test and observe cut-off and control effects of polymorphic foam on combustible liquid flowing fire.

To achieve the above objective, the present invention provides the following solution.

The present invention provides a device for testing control of polymorphic foam on flowing fire, comprising a test bench, a combustible liquid injecting mechanism and a polymorphic foam spraying mechanism. The combustible liquid injecting mechanism and the polymorphic foam spraying mechanism are relatively arranged on the test bench. The combustible liquid injecting mechanism can spray combustible liquid to the test bench. The polymorphic foam spraying mechanism can spray polymorphic foam to the test bench, and the spraying direction of the polymorphic foam is relative to the spraying direction of the combustible liquid.

Preferably, the longitudinal section of the test bench is preferably U-shaped. The test bench comprises a left wing panel, a base plate and a right wing panel, which are sequentially and fixedly connected. A plurality of adjusting rods are fixedly connected with one end of the base plate. A plurality of adjusting holes are opened in each adjusting rod in a vertical direction at equal intervals. The base plate is fixed to the adjusting rods after fixing bolts pass through the adjusting holes.

Preferably, a plurality of drainage outlets are opened in the base plate and are located at one end, away from the adjusting rods, of the base plate.

Preferably, the combustible liquid injecting mechanism comprises a combustible liquid delivery pipe, combustible liquid nozzles and a combustible liquid supply device. The combustible liquid delivery pipe is horizontally fixed to the right wing panel. A plurality of combustible liquid nozzles are opened in one side of the combustible liquid delivery pipe at equal intervals, and one end of the combustible liquid delivery pipe is communicated with the combustible liquid supply device.

Preferably, the combustible liquid supply device comprises a submersible pump and a liquid storage tank. The submersible pump is arranged in the liquid storage tank. The submersible pump is communicated with the combustible liquid delivery pipe through a quick connector. A first valve is arranged on the combustible liquid delivery pipe.

Preferably, the polymorphic foam spraying mechanism comprises a polymorphic foam delivery pipe, polymorphic foam nozzles and a polymorphic foam supply hose. The polymorphic foam delivery pipe and the combustible liquid delivery pipe are parallel. A plurality of polymorphic foam nozzles are opened in one side of the polymorphic foam delivery pipe at equal intervals. The polymorphic foam nozzles and the combustible liquid nozzles are arranged oppositely. The polymorphic foam supply hose is communicated with the polymorphic foam delivery pipe through a quick connector. A second valve is arranged on the polymorphic foam delivery pipe.

Preferably, two ends of the polymorphic foam delivery pipe are respectively and fixedly connected with a first fixing rod, and the first fixing rods are vertically fixed to the base plate.

Preferably, the device for testing control of polymorphic foam on flowing fire further comprises a water-based foam delivery pipe, water-based foam nozzles and a water-based foam supply hose. Two ends of the water-based foam delivery pipe are fixed to the test bench by respectively utilizing a second fixing rod. The water-based foam delivery pipe and the combustible liquid delivery pipe are mutually vertical. A plurality of the water-based foam nozzles are opened in the water-based foam delivery pipe at equal intervals. The water-based foam supply hose is communicated with the water-based foam delivery pipe through a quick connector. A third valve is arranged on the water-based foam delivery pipe.

The present invention achieves the following technical effects compared with the prior art:

The present invention arranges the combustible liquid injecting mechanism and the polymorphic foam spraying mechanism on the test bench, utilizes the combustible liquid injecting mechanism to spray the combustible liquid to the test bench, simultaneously utilizes the polymorphic foam spraying mechanism to spray the polymorphic foam to the test bench, and also ensures relative spraying of the combustible liquid and the polymorphic foam so as to observe and test cut-off and control effects of the polymorphic foam on the combustible liquid flowing fire.

DESCRIPTION OF THE EMBODIMENTS

To make the foregoing objective, features, and advantages of the present invention more apparent and more comprehensible, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown inFIG.1toFIG.3, the embodiment provides a device for testing control of polymorphic foam on flowing fire, comprising a test bench1, a combustible liquid injecting mechanism and a polymorphic foam spraying mechanism. The combustible liquid injecting mechanism and the polymorphic foam spraying mechanism are relatively arranged on the test bench1. The combustible liquid injecting mechanism can spray combustible liquid to the test bench1. The polymorphic foam spraying mechanism can spray polymorphic foam to the test bench1, and the spraying direction of the polymorphic foam is relative to the spraying direction of the combustible liquid.

In the embodiment, the longitudinal section of the test bench1is preferably U-shaped. The test bench1comprises a left wing panel102, a base plate101and a right wing panel103, which are sequentially and fixedly connected. A plurality of adjusting rods7are fixedly connected with one end of the base plate101. A plurality of adjusting holes are opened in each adjusting rod7in a vertical direction at equal intervals. The base plate101is fixed to the adjusting rods7after fixing bolts19pass through the adjusting holes. The adjusting rod7may be used for adjusting a test angle of the test bench1through the fixing bolt19. Additionally, the adjusting rod7may also be provided with the existing telescopic rod, the base plate101is fixed to a support rod of the telescopic rod, and the support rod telescopes in a main rod so as to adjust an inclination angle α (preferably, 0°≤α<90°), namely the test angle, of the test bench1. Specifically, the flow rate of the liquid on the test bench1can be adjusted by adjusting the inclination angle α of the test bench1, even can be calculated according to the physical property of the fluid and the inclination angle of the test bench1. A plurality of drainage outlets2are opened in the base plate101. The drainage outlets2are located on one side close to the left wing panel102, namely at one end, away from the adjusting rods7, of the base plate101. After a test is completed, liquid can be drained through the drainage outlets2.

Specifically, the combustible liquid injecting mechanism comprises a combustible liquid delivery pipe17, combustible liquid nozzles18and a combustible liquid supply device, the combustible liquid delivery pipe17is horizontally fixed to the right wing panel103, a plurality of combustible liquid nozzles18are opened in one side of the combustible liquid delivery pipe17at equal intervals, and one end of the combustible liquid delivery pipe17is communicated with the combustible liquid supply device. The combustible liquid supply device comprises a submersible pump15and a liquid storage tank14. The submersible pump15is arranged in the liquid storage tank14. The submersible pump15is communicated with the combustible liquid delivery pipe17through a quick connector. A first valve16is arranged on the combustible liquid delivery pipe17.

Specifically, the polymorphic foam spraying mechanism comprises a polymorphic foam delivery pipe4, polymorphic foam nozzles5and a polymorphic foam supply hose9. The polymorphic foam delivery pipe4and the combustible liquid delivery pipe17are parallel. Two ends of the polymorphic foam delivery pipe4are respectively and fixedly connected with a first fixing rod6, and the first fixing rods6are vertically fixed to the base plate101. In one example, the first fixing rod6is located at the position of ⅓ or ⅔ the length of the base plate101corresponding to one end, at which the combustible liquid delivery pipe17is arranged, of the base plate101; moreover, the position of the first fixing rod6is not limited to this and can be adjusted according to actual needs. A plurality of polymorphic foam nozzles5are opened in one side of the polymorphic foam delivery pipe4at equal intervals. The polymorphic foam nozzles5and the combustible liquid nozzles18are arranged relatively. The polymorphic foam supply hose9is communicated with the polymorphic foam delivery pipe4through a quick connector. A second valve8is arranged on the polymorphic foam delivery pipe4.

In the embodiment, the device for testing control of polymorphic foam on flowing fire further comprises a water-based foam delivery pipe11, water-based foam nozzles12and a water-based foam supply hose13. Two ends of the water-based foam delivery pipe11are fixed to the test bench1by respectively utilizing a second fixing rod3. The water-based foam delivery pipe11and the combustible liquid delivery pipe17are mutually vertical and are parallel with the base plate101of the test bench1. In one example, the height of the water-based foam delivery pipe11from the base plate101is a half of the width of the base plate101. The position of the water-based foam delivery pipe11is at the middle portion in the width direction of the base plate101, which is not limited to this and can be adjusted according to actual needs. A plurality of the water-based foam nozzles12are opened in the water-based foam delivery pipe11at equal intervals. The water-based foam supply hose13is communicated with the water-based foam delivery pipe11through a quick connector. A third valve10is arranged on the water-based foam delivery pipe11.

During application, firstly combustible liquid is pumped out of the liquid storage tank14by the submersible pump15and then sequentially passes through the first valve16, the combustible liquid delivery pipe17and combustible liquid nozzles18to be injected to the test bench1. Specifically, the flow rate of the combustible liquid can be controlled by adjusting the inclination angle of the test bench1or the opening degree of the first valve16. Secondly, polymorphic foam is sprayed to the test bench1through the polymorphic foam supply hose9, the second valve8, the polymorphic foam delivery pipe4and the polymorphic foam nozzles5, observing whether the polymorphic foam can cut off the combustible liquid. Therefore, based on the test, the cut-off effects of different polymorphic foams can be obtained, and the proportional relationship between the spraying speed of the polymorphic foam and the flow rate of the combustible liquid at the best cut-off state can also be obtained. In the embodiment, the cut off means: the polymorphic foam can form a foam sieve to adsorb the combustible liquid in the foam so as to cut off the flowing of the combustible liquid and prevent gradually extinguished flowing fire from diffusing and firing, thereby further preventing expansion of the fire. During the whole test, the combustible liquid may be burnt or unburnt. If the combustible liquid is burnt during the test, the water-based foam can be sprayed out to extinguish the burning combustible liquid after the test is completed. If the combustible liquid is unburnt during the test, the liquid can be drained from the drainage outlets2after the test is completed.