Cooling device for testing air leakage amount of fireproof valve

Abstract

The utility model discloses a cooling device for testing the air leakage amount of a fireproof valve, which comprises a gas pipeline, a circulating water pipe is arranged in the gas pipeline, a water inlet of the circulating water pipe is connected with a first water tank, and a water outlet of the circulating water pipe is connected with a second water tank. The device breaks through the traditional thought that a connecting pipeline is immersed in water, and circulating water is arranged in the gas conveying pipeline, so that the heat exchange area is effectively increased, the heat exchange time is prolonged, and the convenient and efficient heat exchange effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cooling heat exchange related technical field, concretely relates to a cooling device for fire damper air leakage testing. BACKGROUND

[0002] When the fire damvalve is tested for air leakage and fire resistance, the standard requires that a connecting pipe made of steel plate be used between the valve and the pressure and flow testing system. The high-temperature gas after combustion in the test furnace enters the pipe through the valve gap. The long-term baking of the pipe by the high-temperature flue gas causes the pipe and the surrounding environment to be in a high-temperature state. This affects the test operators and the pressure and flow testing system, and shortens the service life of the pipe. Therefore, the pipe needs to be cooled in time. In the prior art, a water tank is configured, and a large amount of cooling water is injected into the water tank to cool the connecting pipe directly.

[0003] 1. The high-temperature gas flows fast in the pipe, and the pipe in the water tank passes through in a very short time, which cannot cool the pipe in time.

[0004] 2. To increase the heat exchange area, the high-temperature gas cooling section pipe is arranged in the form of multiple thin pipes in parallel. Therefore, there are many weak points, and it is easy to have leakage points and difficult to troubleshoot.

[0005] 3. The cooling thin pipe is a consumable part, and often leaks. Since the high-temperature gas is corrosive and has smoke, and there is a pressure difference of 300Mpa between the cooling water, the leakage will block part of the lower thin pipe gas path, reduce the effective flow area of the gas, and affect the upper limit of the flow measurement. Therefore, drainage and cleaning work need to be performed before each test. INVENTION CONTENTS

[0006] To solve the above problems, the utility model discloses a cooling device for fire damper air leakage testing. The device breaks the traditional idea of immersing the connecting pipe in water, places the circulating water in the gas conveying pipe, effectively increases the heat exchange area and prolongs the heat exchange time, and achieves convenient and efficient heat exchange effect.

[0007] A cooling device for fire damper air leakage testing, comprising a gas conveying pipe, a circulating water pipe is arranged in the gas conveying pipe, a first water tank is connected to the water inlet of the circulating water pipe, and a second water tank is connected to the water outlet of the circulating water pipe.

[0008] Preferably, the circulating water pipe is arranged in a spiral shape in the gas conveying pipe.

[0009] Preferably, the circulating water pipe is at least two, and the water inlets of the two circulating water pipes are located at the two ends of the gas conveying pipe.

[0010] Preferably, the two circulating water pipes are arranged in parallel with each other.

[0011] Preferably, the two circulating water pipes are arranged in parallel with each other.

[0012] Preferably, the two circulating water pipes are arranged in parallel with each other.

[0013] Preferably, the gas conveying pipeline comprises a cylindrical pipeline body, and a set of conical end flanges is connected to the left and right ends of the pipeline body.

[0014] Preferably, the inner diameter of the pipeline body is greater than the caliber of the end flanges.

[0015] Preferably, a sealing gasket is arranged between the pipeline body and the end flanges.

[0016] Preferably, the pipeline body and the end flanges are detachably connected through bolts.

[0017] Advantages

[0018] The utility model discloses a plurality of spiral circulating water pipes are arranged in the gas conveying pipeline, and the gas conveying pipeline is arranged as the form that the diameter is greater than the connecting end of both ends, effectively reduces the air pressure, slows down the gas flow rate, prolongs the gas-water heat exchange time, and effectively cools the inner wall of the pipeline fast. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be simply introduced to the drawing needed to be used in the embodiment, and should understand, the following drawing only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0020] Figure 1 It is the whole structure schematic of the utility model Figure One ;

[0021] Figure 2 It is the whole structure schematic of the utility model Figure Two ;

[0022] Figure 3 It is the whole structure schematic of the utility model Figure Three ;

[0023] 1, connecting end, 2, end flange, 3, first water inlet, 4, pipeline body, 5, first water outlet, 6, second water inlet, 7, second water outlet, 8, first circulating water pipe, 9, second circulating water pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.

[0025] As shown in Figures 1-3 The utility model discloses a cooling device for fire damper air leakage testing, which sets the gas conveying pipeline in the form of the diameter being larger than the connecting end of both ends, reduces the gas pressure, and then reduces the conveying speed, so that the gas can fully exchange heat with the cooling water, and the pipeline damage rate is reduced. The device specifically comprises a cylindrical pipeline body 4 and a conical end flange 2 detachably mounted on both ends of the pipeline body 4 through bolts, a sealing gasket is arranged between the end flange 2 and the pipeline body 4 for preventing gas leakage. The outer side of the end flange 2 is connected with the connecting end 1 for conveying the high-temperature gas after the valve to the pressure and flow testing system. A plurality of circulating water pipes are arranged in the pipeline body 4, a first water tank is connected with the water inlet of the circulating water pipe, and a second water tank is connected with the water outlet of the circulating water pipe. The water inlet and the water outlet are respectively connected with the two water tanks to prevent the water after heat exchange from affecting the water before heat exchange. The two water tanks are provided with a communication channel to ensure that the water tank connected with the water inlet can continuously supply water.

[0026] As a preferred scheme, the circulating water pipes are arranged in a spiral shape in the gas conveying pipeline, effectively increasing the length of the water pipes, and then increasing the contact area with the high-pressure gas and improving the heat exchange efficiency.

[0027] As a preferred scheme, the circulating water pipes are designed as at least two, and the water inlets of the two circulating water pipes are respectively located at both ends of the gas conveying pipeline. That is, the first water inlet 3 of the first circulating water pipe 8 is located at the left end, and the first water outlet is located at the right end, the second water inlet 6 of the second circulating water pipe 9 is located at the right end, and the second water outlet 7 is located at the left end.

[0028] As a preferred scheme, the two circulating water pipes are arranged in parallel with each other, can also be arranged in a spiral shape with different diameters, are arranged in a sleeved manner, and can also be arranged in a crossed manner.

[0029] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and the person skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A cooling device for testing the air leakage of a fire damper, characterized in that, The utility model provides a gas transmission pipeline, which comprises a circulating water pipe arranged in the gas transmission pipeline, a first water tank connected to the water inlet of the circulating water pipe, and a second water tank connected to the water outlet of the circulating water pipe. The gas transmission pipeline comprises a cylindrical pipeline body, a group of conical end flanges connected to the left and right ends of the pipeline body, and the inner diameter of the pipeline body is larger than the diameter of the end flanges. The circulating water pipes are arranged in a spiral shape in the gas transmission pipeline, and there are at least two circulating water pipes, and the water inlets of the two circulating water pipes are located at the two ends of the gas transmission pipeline.

2. The cooling device for testing the air leakage of a fire damper according to claim 1, wherein The two circulating water pipes are arranged in parallel with each other.

3. The cooling device for testing the air leakage of a fire damper according to claim 1, wherein The two circulating water pipes are arranged in a sleeved manner.

4. The cooling device for testing the air leakage of a fire damper according to claim 1, wherein The two circulating water pipes are arranged in a crossed manner.

5. The cooling device for testing the air leakage of a fire damper according to claim 1, wherein A sealing gasket is arranged between the pipeline body and the end flanges.

6. The cooling device for testing the air leakage of a fire damper according to claim 1, wherein The pipeline body and the end flanges are detachably connected through bolts.

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