A temperature control fire extinguishing system with high and low pressure quick switching

Abstract

The application discloses a temperature-controlling fire extinguishing system with high-pressure and low-pressure quick switching, which comprises a shell with a water inlet and a water outlet, a gasoline engine in the shell, a low-pressure pump body driven by the gasoline engine and connected to the water inlet at one end and a high-pressure pump body connected to the water outlet at one end, characterized in that the output end of the low-pressure pump body is connected with a heat exchange device, the heat exchange device is located at the heat dispersion position of the gasoline engine, is used for conveying water and assisting the heat exchange between the water and the gasoline engine, the other end of the heat exchange device is connected to the high-pressure pump body, the output end of the high-pressure pump body is connected to the water outlet, and is used for adjusting the water pressure output by the water outlet, the application can effectively cool the gasoline engine and heat the water for fire extinguishing through the heat exchange device, greatly improves the fire extinguishing effect, and is effectively applicable to different degrees of fire extinguishing needs through the quick switching of high and low pressures.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fire pumps, in particular to a temperature control fire extinguishing system with high-pressure and low-pressure quick switching. BACKGROUND

[0002] Fire extinguishing systems are divided into two categories: one is that multiple fire extinguishers are connected to form a whole fire extinguishing system; the other is that a single fire extinguishing device is a fire extinguishing system, wherein a fire pump is the most important one, the fire pump is a foreign product, and according to different classification methods, different types are divided according to the characteristics of full sealing, no leakage and corrosion resistance, and are widely used in environmental protection, water treatment, fire fighting and other departments.

[0003] However, most of the current fire pumps usually only have a fixed water pressure to output fire extinguishing water, so that the application conditions of the fire pump are limited, for example, patent No. CN106438511A, named "fire pump for high-rise building", by additionally arranging a booster pump, the water pressure is strengthened again, and can be used for extinguishing high-rise fire, but when facing low-rise fire, a larger water pressure is not needed, and other fire pumps need to be replaced for fire extinguishing, which is very inconvenient.

[0004] At the same time, due to the additional booster pump, and the gasoline engine itself will heat up during actual work, which is very easy to overheat, not only causing the gasoline engine to work abnormally, but also affecting the service life due to excessive internal heat accumulation, and even causing more serious safety accidents, the existing fire pump gasoline engine is usually provided with an additional exhaust fan or a heat dissipation groove to dissipate heat, for example, patent No. CN111608915A, named "high-efficiency multi-stage fire pump", by arranging an exhaust fan in the outer cover, and a plurality of heat dissipation slots are formed in the end wall of the outer cover, the heat dissipation effect is improved, but this heat dissipation method not only needs an additional fan, but also consumes a lot of energy, and the heat generated during the use of the fire pump is not effectively utilized, which causes great waste.

[0005] In order to solve the above problems, the present application is born. SUMMARY

[0006] (I) Technical problems solved

[0007] In view of the deficiencies of the prior art, the application provides a temperature control fire extinguishing system with high-pressure and low-pressure quick switching, which solves the problems in the background art.

[0008] (II) Technical scheme

[0009] In order to achieve the above object, the present application is implemented by the following technical scheme: a temperature control fire extinguishing system with high and low pressure quick switching, comprising a shell with a water inlet and a water outlet, a gasoline engine in the shell, a low pressure pump body driven by the gasoline engine and connected to the water inlet at one end and a high pressure pump body connected to the water outlet at one end, the output end of the low pressure pump body is connected with a heat exchange device, the heat exchange device is located at the heat dispersion place of the gasoline engine, used for conveying water and assisting the heat exchange between the water and the gasoline engine, the other end of the heat exchange device is connected to the high pressure pump body, the output end of the high pressure pump body is connected to the water outlet, used for adjusting the water pressure of the water outlet.

[0010] Preferably, the heat exchange device comprises an internal heat exchange component, and the output end of the internal heat exchange component is connected to the high pressure pump body, the internal heat exchange component penetrates in and out of the gasoline engine, used for conveying the water input by the low pressure pump body to the internal heat dispersion place of the gasoline engine.

[0011] Preferably, the heat exchange device comprises an external heat exchange component, and the output end of the external heat exchange component is connected to the high pressure pump body, the external heat exchange component is wrapped around the surface of the gasoline engine, used for conveying the water input by the low pressure pump body to the external heat dispersion place of the gasoline engine.

[0012] Preferably, the heat exchange device comprises an internal heat exchange component and an external heat exchange component, the internal heat exchange component penetrates in and out of the gasoline engine, the external heat exchange component is wrapped around the surface of the gasoline engine, and the internal heat exchange component and the external heat exchange component can be used independently or cooperatively.

[0013] Preferably, the internal heat exchange component comprises an internal heat exchange water inlet pipe, an internal heat exchange pipeline and an internal heat exchange water outlet pipe, the internal heat exchange pipeline is located at the internal heat production place of the gasoline engine, one end of the internal heat exchange pipeline is connected with the internal heat exchange water inlet pipe, and the other end is connected with the internal heat exchange water outlet pipe, and the other end of the internal heat exchange water outlet pipe is connected with the high pressure pump body.

[0014] Preferably, the external heat exchange component comprises an external heat exchange water inlet pipe and an external heat exchange pipeline, and the external heat exchange pipeline is wrapped around the surface of the gasoline engine in a spiral upward shape.

[0015] Preferably, the internal heat exchange water inlet pipe is provided with a valve one, and the external heat exchange water inlet pipe is provided with a valve two, respectively used for adjusting the water flow size of the internal heat exchange component and the external heat exchange component.

[0016] Preferably, the high pressure pump body is electrically connected with the gasoline engine through a clutch.

[0017] Preferably, the internal heat exchange outlet pipe is provided with a temperature detector, the internal heat exchange inlet pipe is connected with a shunt pipe, and the shunt pipe is connected with a plurality of water spraying pipes, which are located inside the gasoline engine.

[0018] A method for using a high-low pressure quick switching temperature control fire extinguishing system, comprising the following steps,

[0019] S1, starting the gasoline engine to drive the low-pressure pump body to intake water, and the low-pressure pump body pressurizes the water and then delivers the water to the internal heat exchange inlet pipe and the external heat exchange inlet pipe,

[0020] S2, the internal heat exchange inlet pipe delivers the water to the internal heat exchange pipeline inside the gasoline engine, the water in the internal heat exchange pipeline exchanges heat with the heat generating part inside the gasoline engine, and then is delivered to the high-pressure pump body,

[0021] S3, the external heat exchange inlet pipe delivers the water to the external heat exchange pipeline, the water in the external heat exchange pipeline exchanges heat with the heat collecting and distributing part on the surface of the gasoline engine, and then is delivered to the high-pressure pump body,

[0022] S4, when the high-pressure pump body is not started, the heated water at the outlet is sprayed out to extinguish the fire in a low-pressure state, the clutch is closed, and the high-pressure pump body is started, so that the heated water in the high-pressure pump body is sprayed out to extinguish the fire in a high-pressure state after being pressurized.

[0023] (Three) beneficial effects

[0024] Compared with the prior art, the application has the following advantages: the low-pressure pump body pressurizes the fire extinguishing water and delivers the water to the high-pressure pump body, and the high-pressure pump body is controlled in real time through the clutch to meet the demand of real-time switching of the output fire extinguishing water between high and low pressures, thereby effectively improving the scene of the fire pump responding to different fire extinguishing demands.

[0025] In addition, the water flow pressurized by the low-pressure pump body is connected to the original internal heat exchange pipeline of the gasoline engine, so that the fire extinguishing water passes through the inside of the gasoline engine before use, the low-temperature water exchanges heat with the high-temperature cylinder inside the gasoline engine, on the one hand, the inside of the gasoline engine is cooled, on the other hand, the heat generated inside the gasoline engine is used to heat the water, at the same time, the external heat exchange pipeline is wrapped around the surface of the gasoline engine, and the water flow output by the same low-pressure pump body is introduced into the pipeline, so that the water flow passes through the surface of the gasoline engine before being used to extinguish the fire, the outside of the gasoline engine is cooled, and the fire extinguishing water is heated, finally, the water heated in two places is collected in the high-pressure pump body, and the high-pressure pump body is used to quickly spray hot water, preventing the water from being cooled during the spraying process, greatly improving the utilization rate of the heat generated during the use of the gasoline engine and the fire extinguishing effect of the fire pump (in a certain temperature range, the higher the temperature of the water, the easier the water vaporizes, the faster the oxygen around the ignition point is isolated, and the better the fire extinguishing effect, especially for oil fires).

[0026] By setting temperature detector on the internal heat exchange outlet pipe, the internally heated fire extinguishing water is monitored in real time, and a small part of the fire extinguishing water is led to the water spraying pipe through the shunt pipe connected to the internal heat exchange inlet pipe, and the water spraying pipe is controlled through the temperature detector, so that when the water temperature output by the internal heat exchange outlet pipe is too high, the water spraying pipe sprays water to adjust the water temperature output by the internal heat exchange outlet pipe and to cool the internal gasoline engine to prevent high temperature from damaging the gasoline engine. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the present application;

[0028] Figure 2 is an internal perspective view of the present application;

[0029] Figure 3 is a side view of the present application;

[0030] Figure 4 is a schematic diagram of the internal heat exchange water flow direction of the present application;

[0031] Figure 5 is a schematic diagram of the internal heat exchange water flow direction of the present application;

[0032] Figure 6 is a schematic diagram of the internal heat exchange water flow direction of the present application;

[0033] In the figure: 1, housing; 2, water inlet; 3, water outlet; 4, low-pressure pump body; 5, gasoline engine; 51, temperature control box; 52, engine housing; 53, cylinder; 6, high-pressure pump body; 7, internal heat exchange assembly; 71, valve one; 72, internal heat exchange inlet pipe; 73, internal heat exchange outlet pipe; 74, internal heat exchange pipe; 75, shunt pipe; 76, temperature detector; 77, water spraying pipe; 8, muffler; 9, gearbox; 10, external heat exchange assembly; 101, valve two; 102, external heat exchange inlet pipe; 103, external heat exchange pipe; 11, oil tank; 12, clutch; 13, heat exchange device; 14, universal wheel. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below with the help of the accompanying drawings and examples.

[0035] As Figures 1-6The temperature control fire extinguishing system with high pressure and low pressure quick switching comprises a shell 1 with an inlet 2 and an outlet 3, a gasoline engine 5 in the shell 1, a low pressure pump body 4 driven by the gasoline engine 5 and connected to the inlet 3, and a high pressure pump body 6 connected to the outlet 3, wherein the output end of the low pressure pump body 4 is connected to a heat exchange device 13, the heat exchange device 13 is located at the heat dispersion position of the gasoline engine 5, is used for conveying water and assisting the heat exchange between the water and the gasoline engine 5, the other end of the heat exchange device 13 is connected to the high pressure pump body 6, and the output end of the high pressure pump body 6 is connected to the outlet 3, which is used for adjusting the water pressure of the outlet 3 (the heat exchange device 13 can be used alone with the low pressure pump body 4 or can be used in combination with the low pressure pump body 4 and the high pressure pump body 6).

[0036] The heat exchange device 13 comprises an internal heat exchange component 7, the output end of the internal heat exchange component 7 is connected to the high pressure pump body 6, the internal heat exchange component 7 penetrates in and out of the gasoline engine 5, and is used for conveying the water input by the low pressure pump body 4 to the internal heat dispersion position of the gasoline engine 5.

[0037] The heat exchange device 13 comprises an external heat exchange component 10, the output end of the external heat exchange component 10 is connected to the high pressure pump body 6, the external heat exchange component 10 is wrapped around the surface of the gasoline engine 5, and is used for conveying the water input by the low pressure pump body 4 to the external heat dispersion position of the gasoline engine 5.

[0038] The heat exchange device 13 comprises the internal heat exchange component 7 and the external heat exchange component 10, the internal heat exchange component 7 penetrates in and out of the gasoline engine 5, the external heat exchange component 10 is wrapped around the surface of the gasoline engine 5, and the internal heat exchange component 7 and the external heat exchange component 10 can be used independently or in combination.

[0039] The internal heat exchange component 7 comprises an internal heat exchange inlet pipe 72, an internal heat exchange pipe 74 and an internal heat exchange outlet pipe 73, the internal heat exchange pipe 74 is located at the internal heat generation position of the gasoline engine 5, one end of the internal heat exchange pipe 74 is connected to the internal heat exchange inlet pipe 72, the other end of the internal heat exchange pipe 74 is connected to the internal heat exchange outlet pipe 73, and the other end of the internal heat exchange outlet pipe 73 is connected to the high pressure pump body 6.

[0040] The external heat exchange component 10 comprises an external heat exchange inlet pipe 102 and an external heat exchange pipe 103, and the external heat exchange pipe 103 is wrapped around the surface of the gasoline engine 5 in a spiral upward manner.

[0041] The internal heat exchange inlet pipe 72 is provided with a valve one 71, and the external heat exchange inlet pipe 102 is provided with a valve two 101, which are respectively used for adjusting the water flow of the internal heat exchange component 7 and the external heat exchange component 10.

[0042] The high-pressure pump body 6 is electrically connected with the gasoline engine 5 through the clutch 12 (so that when pressure needs to be increased or reduced, the high-pressure pump body 6 can be quickly started or stopped through the clutch 12, so that the water pressure output by the fire pump is quickly switched between high pressure and low pressure).

[0043] The internal heat exchange outlet pipe 73 is provided with a temperature detector 76 (a conventional temperature detector 76 for detecting the temperature of the water flow output by the internal heat exchange outlet pipe 73 in real time), the output end of the internal heat exchange inlet pipe 72 is connected with a shunt pipe 75, and the end of the shunt pipe 75 is connected with a plurality of water spraying pipes 77. The water spraying pipes 77 are located inside the gasoline engine 5 (the water spraying pipes 77 are controlled in real time by the temperature detected by the temperature detector 76, and when the temperature of the water flow output by the internal heat exchange inlet pipe 72 is too high, the water spraying pipes 77 are automatically opened to spray water into the temperature control box 51 and the surface of the internal heat exchange outlet pipe 72, thereby cooling the inside of the gasoline engine 5 and preventing the gasoline engine 5 from overheating. On the other hand, the water flow output by the internal heat exchange outlet pipe 72 is cooled to prevent the temperature of the output water flow from being too high and affecting the fire extinguishing effect).

[0044] A use method of the temperature control fire extinguishing system with high-pressure and low-pressure quick switching, comprising the following steps,

[0045] S1, start the gasoline engine 5 to drive the low-pressure pump body 4 to take in water, and the low-pressure pump body 4 pressurizes the water and then delivers it to the internal heat exchange inlet pipe 72 and the external heat exchange inlet pipe 102,

[0046] S2, the internal heat exchange inlet pipe 72 delivers the water to the internal heat exchange pipeline 74 inside the gasoline engine 5, the water in the internal heat exchange pipeline 74 exchanges heat with the heat generating part inside the gasoline engine 5, and then is delivered into the high-pressure pump body 6,

[0047] S3, the external heat exchange inlet pipe 102 delivers the water to the external heat exchange pipeline 103, the water in the external heat exchange pipeline 103 exchanges heat with the heat collecting and distributing part on the surface of the gasoline engine 5, and then is delivered into the high-pressure pump body 6,

[0048] S4, when the high-pressure pump body 6 is not started, the heated water at the water outlet 3 is sprayed out for fire extinguishing in a low-pressure state, the clutch 12 is closed, and the high-pressure pump body 6 is started, so that the heated water in the high-pressure pump body 6 is sprayed out for fire extinguishing in a high-pressure state after being pressurized.

[0049] When extinguishing fire, the gasoline engine 5 is started to drive the low-pressure pump body 4, the low-pressure pump body 4 quickly takes in water from the water inlet 2, pressurizes the water for fire extinguishing, and then outputs the water through the internal heat exchange inlet pipe 72 and the external heat exchange inlet pipe 102. The internal heat exchange inlet pipe 72 guides the water for fire extinguishing into the internal heat exchange pipeline 74 inside the gasoline engine 5.

[0050] Since a large amount of heat is generated inside the gasoline engine 5 (the gasoline engine 5 includes the temperature control box 51 on the top, the engine housing 52 on the bottom, and a plurality of cylinders 53 on the inner side, and the temperature of the cylinders 53 is extremely high because the gasoline engine 5 mainly converts chemical energy into mechanical energy and heat energy by burning fuel in the cylinders 53, and a large amount of heat is generated during combustion), and the internal heat exchange pipeline 74 is located on the surface of the cylinders 53 inside the gasoline engine 5, when the fire extinguishing water is transported to the position of the cylinders 53 through the internal heat exchange pipeline 74, a large temperature difference exists between the fire extinguishing water and the surface of the cylinders 53, so that heat exchange occurs rapidly between the two (the specific heat capacity of water is large, and it can absorb a large amount of heat).

[0051] At the same time, since the low-pressure pump body 4 continuously transports the fire extinguishing water, the water that is in contact with the surface of the cylinders 53 and is heated is continuously pushed forward, effectively preventing the problems of poor cooling effect of the gasoline engine 5 after the water body is heated and slow heating rate of the water body (the greater the temperature difference, the faster the heat exchange rate, and the smaller the temperature difference between the water and the surface of the cylinders 53, resulting in lower heat exchange efficiency), and the internal heat exchange outlet pipe 74 outputs the heated water to the high-pressure pump body 6, thereby completing the internal heat exchange process. During the entire fire extinguishing process, the internal heat exchange is continuously carried out.

[0052] Since the gasoline engine 5 generates a certain amount of heat not only inside but also outside during use (when the cylinders 53 inside the gasoline engine 5 generate heat, part of the heat is output to the surface of the gasoline engine 5 in the form of radiant heat, causing the surface of the gasoline engine 5 to heat up), the external heat exchange inlet pipe 102 transports the fire extinguishing water to the external heat exchange pipeline 103.

[0053] Since the external heat exchange pipeline 103 is wrapped around the surface of the gasoline engine 5 in a spiral upward manner, the fire extinguishing water in the external heat exchange pipeline 103 can be in contact with the surface of the gasoline engine 5 to a large extent and exchange heat during the contact, and finally the heated water is transported to the high-pressure pump body 6 by the external heat exchange pipeline 103.

[0054] When the fire is small, the clutch 12 is not started, so that the water flow pressurized by the low-pressure pump body 4 passes through the heat exchange device 13 and is directly output through the water outlet 3 without being pressurized again by the high-pressure pump body 6 (in the case of using the low-pressure pump body alone, the effective lift of the fire pump is about 90 meters, which is sufficient to meet the needs of general fire).

[0055] At the same time, a plurality of universal wheels 14 (which can be adjusted in direction and moved at will) are arranged at the bottom of the shell 1, so that the fire extinguishing system can be moved more conveniently during fire extinguishing, and the high-low pressure switching can be flexibly responded to different sizes of fire.

[0056] By adjusting the valve one 71 in the internal heat exchange water inlet pipe 72 and the valve two 101 in the external heat exchange water inlet pipe 102, the flow rate of the internal heated water (the temperature of the internal heated water is higher, which mainly plays a role of raising the temperature of the water body during extinguishing) and the flow rate of the external heated water (the temperature of the external heated water is lower, which plays a role of adjusting the temperature of the water body, and the water temperature during extinguishing should not be too high, and the water flow sprayed out in the form of mist when the temperature is close to 100 degrees Celsius, which not only causes the water body to be unable to be delivered to the fire point, but also causes poor extinguishing effect and easy scalding. On the other hand, the water output by the high-pressure pump body 6 is large, and the flow rate of the internal heated water is insufficient, so the external heated water also plays a role of supplementing the water required by the high-pressure pump body, which mainly plays a role of providing kinetic energy for the overall sprayed hot water).

[0057] The above description is based on the examples, and through the above description, relevant personnel can make various changes and modifications without deviating from the scope of the present invention. The scope of the present invention is not limited to the content of the specification, and the scope of protection must be determined according to the scope of claims.

Claims

1. A high-pressure and low-pressure rapid switching temperature control fire extinguishing system, comprising a housing with an inlet and an outlet, a gasoline engine located within the housing, a low-pressure pump driven by the gasoline engine and connected at one end to the inlet, and a high-pressure pump connected at one end to the outlet, characterized in that: The output end of the low-pressure pump body is connected to a heat exchange device located at the heat distribution point of the gasoline engine. This heat exchange device is used to transport water and assist in heat exchange between the water and the gasoline engine. The other end of the heat exchange device is connected to a high-pressure pump body, and the output end of the high-pressure pump body is connected to a water outlet to adjust the water pressure output from the outlet. The heat exchange device includes an internal heat exchange component and an external heat exchange component. The internal heat exchange component extends into and exits the gasoline engine, while the external heat exchange component surrounds the surface of the gasoline engine. The internal and external heat exchange components can be used independently or in combination. The internal heat exchange component includes an internal heat exchange inlet pipe, an internal heat exchange conduit, and an internal heat exchange outlet pipe. The internal heat exchange conduit is located inside the gasoline engine. In the heat generation section, one end of the internal heat exchange pipe is connected to the internal heat exchange inlet pipe, and the other end is connected to the internal heat exchange outlet pipe. The other end of the internal heat exchange outlet pipe is connected to the high-pressure pump body. A temperature detector is installed on the internal heat exchange outlet pipe. The output end of the internal heat exchange inlet pipe is connected to a shunt pipe, and the end of the shunt pipe is connected to multiple spray pipes located inside the gasoline engine. The fire extinguishing water pressurized by the low-pressure pump body is delivered to the high-pressure pump body. The high-pressure pump body is controlled in real time by a clutch to meet the real-time switching of high and low pressure of the output fire extinguishing water. The temperature detector controls the spray pipes. When the water temperature output from the internal heat exchange outlet pipe is too high, the spray pipes spray water to adjust the water temperature output from the internal heat exchange outlet pipe and to cool the inside of the gasoline engine.

2. The high-pressure and low-pressure rapid switching temperature control and extinguishing system according to claim 1, characterized in that: The output end of the internal heat exchange component is connected to the high-pressure pump body.

3. The high-pressure and low-pressure rapid switching temperature control and extinguishing system according to claim 1, characterized in that: The output end of the external heat exchange component is connected to the high-pressure pump body.

4. A high-pressure / low-pressure rapid switching temperature control and extinguishing system according to claim 3, characterized in that: The external heat exchange assembly includes an external heat exchange water inlet pipe and an external heat exchange pipe, the external heat exchange pipe being spirally ascending and wrapped around the surface of the gasoline engine.

5. A high-pressure / low-pressure rapid switching temperature control and extinguishing system according to claim 4, characterized in that: The internal heat exchange water inlet pipe is equipped with valve one, and the external heat exchange water inlet pipe is equipped with valve two, which are used to adjust the water flow of the internal heat exchange component and the external heat exchange component, respectively.

6. A high-pressure / low-pressure rapid switching temperature control and extinguishing system according to claim 1, characterized in that: The high-pressure pump body is electrically connected to the gasoline engine via a clutch.

7. The method of using a high-pressure and low-pressure rapid switching temperature control and extinguishing system according to any one of claims 1-6, characterized in that: Includes the following steps, S1. Start the gasoline engine to drive the low-pressure pump body to take in water. The low-pressure pump body pressurizes the water and delivers it to the internal heat exchange water inlet pipe and the external heat exchange water inlet pipe. S2. The internal heat exchange water inlet pipe delivers water to the internal heat exchange pipes inside the gasoline engine. The water in the internal heat exchange pipes exchanges heat with the heat-generating parts inside the gasoline engine, and is then transported to the high-pressure pump. S3. The external heat exchange inlet pipe delivers water to the external heat exchange pipe, where the water exchanges heat with the heat distribution points on the surface of the gasoline engine, and is then transported to the high-pressure pump body. S4. When the high-pressure pump body is not started, the heated water at the outlet is sprayed out in a low-pressure state to extinguish the fire. Close the clutch to start the high-pressure pump body, so that the heated water in the high-pressure pump body is pressurized and sprayed out in a high-pressure state to extinguish the fire.

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