Flameless scouring combustion test system

Abstract

The utility model relates to a flameless scouring combustion test system, which comprises a shell, a plurality of spray pipes are arranged in the shell, the spray pipes are connected with natural gas liquefaction gas inlet pipelines, a fire gathering cover is arranged at the end part of the shell, a spiral-flow type flame distribution ring is arranged on the fire gathering cover, and a plurality of hole sites communicated with the outside are formed in the spiral-flow type flame distribution ring; the spray pipes are arranged towards the spiral-flow type flame distribution ring; natural gas liquefied gas is used as combustion gas, oxygen in air is used as combustion-supporting gas, oxygenation is not needed in the using process, meanwhile, the gas inlet amount is adjusted through a valve, the size of a hole site is adjusted through a spiral-flow type flame distribution ring, the flame size is adjusted, and the non-scour flame at the temperature of 500-1300 DEG C is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of combustion test systems, and in particular to a flameless scour combustion test system. Background Art

[0002] Traditional combustion test systems often need to use air pressurization and oxygen assistance to achieve flames above 1000°C. Even when combined with a swirl flame, it will produce strong flame scouring, which cannot meet the fire resistance and fire protection test requirements of 1100°C non-scouring flame environment in the process of promoting the localization of aerospace engine fire-resistant and fire-resistant cables. Utility Model Content

[0003] Based on this, it is necessary to provide a flameless scour combustion test system, including a shell, wherein a plurality of nozzles are arranged in the shell, wherein the nozzles are connected to a natural gas liquefied air intake pipe, and a fire collecting hood is arranged at the end of the shell, and a swirl flame distribution ring is arranged on the fire collecting hood, and a plurality of holes connected to the outside are arranged on the swirl flame distribution ring, and the nozzles are arranged toward the swirl flame distribution ring.

[0004] The natural gas liquefied gas inlet pipeline is provided with a main valve.

[0005] The natural gas liquefied gas intake pipeline includes a main pipeline and a plurality of branch pipelines connected one by one with the plurality of the nozzles, and branch valves are arranged on the branch pipelines.

[0006] One end of the nozzle facing away from the swirl flame distribution ring extends to the outside of the shell and is connected to the branch pipe. An adjustable air inlet is provided at one end of the nozzle exposed outside the shell.

[0007] One end of the nozzle facing the swirl flame distribution ring is provided with a micro-hole flame outlet.

[0008] The swirl flame distribution ring includes an adjusting member 1 and an adjusting member 2 which are stacked. The adjusting member 1 is fixed to the fire collecting hood. A connecting rod is provided on the adjusting member 1. The adjusting member 2 is sleeved on the connecting rod and can rotate relative to the adjusting member 1. A plurality of through holes are provided on the adjusting member 1 and the adjusting member 2.

[0009] Both the adjusting member 1 and the adjusting member 2 include a plurality of blades, one end of the plurality of blades of the adjusting member 1 is connected to a connecting rod, and the plurality of blades of the adjusting member 2 are connected to each other and form a connecting hole corresponding to the connecting rod; the other end of the plurality of blades of the adjusting member 1 is connected to an inner wall of the fire collecting hood, a groove is concavely provided on the inner wall of the fire collecting hood, and the other end of the plurality of blades of the adjusting member 2 is embedded in the groove and movably connected to the groove.

[0010] Compared with the prior art, the advantages of the utility model are:

[0011] The utility model provides a flame-scour-free combustion test system, which uses natural liquefied gas as the combustion gas and oxygen in the air as the combustion-supporting gas. No oxygen addition is required during use. At the same time, the gas intake volume is adjusted by a valve, and the flame size is adjusted by adjusting the hole size of a swirl flame distribution ring, thereby achieving a scour-free flame of 500°C to 1300°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the flameless scour combustion test system of the embodiment of the present application;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the swirl flame distribution ring according to an embodiment of the present application.

[0015] Description of reference numerals:

[0016] 1. Natural gas liquefied gas inlet pipe; 2. Main valve; 3. Sub-valve; 4. Shell; 5. Adjustable air inlet; 6. Nozzle; 7. Micro-hole flame nozzle; 8. Fire hood; 80. Groove; 9. Swirl flame distribution ring; 90. Adjustment part 1; 91. Adjustment part 2; 92. Connecting rod; 93. Through hole; 94. Hole position. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0020] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0023] A flame-scouring-free combustion test system includes a shell. In this embodiment, the shell is an alloy metal shell 4. A plurality of nozzles 6 are arranged in the shell. The nozzles 6 are connected to a natural gas liquefied air intake pipe 1. The natural gas liquefied air intake pipe 1 is connected to a fuel supply device. Natural gas enters the nozzles 6 through the natural gas liquefied air intake pipe 1, and flames are ejected from the nozzles 6. A fire collecting hood 8 is arranged at the end of the shell. A swirl flame distribution ring 9 for adjusting the size of the hole is arranged at the end of the fire collecting hood 8. The hole connects the inside of the shell with the outside. The nozzles 6 are arranged toward the swirl flame distribution ring 9. The flames ejected from the nozzles 6 are ejected from the hole to achieve flame-scouring-free combustion. The fuel is supplied by the natural gas liquefied air intake pipe 1 in the whole process, and no additional oxygen is required to assist combustion.

[0024] The 1300℃ and below flame-free scour combustion test system uses natural liquefied gas as the combustion gas and oxygen in the air as the combustion-supporting gas. No oxygen addition is required during use. At the same time, the gas intake volume is adjusted by a valve, and the flame size is adjusted by adjusting the hole size of the swirl flame distribution ring 9, thereby achieving a scour-free flame of 500℃ to 1300℃.

[0025] In the utility model, a main valve 2 is provided on the natural gas liquefied gas intake pipeline 1. The natural gas liquefied gas intake pipeline 1 includes a main pipeline and a plurality of branch pipelines connected to a plurality of nozzles 6 one by one, and a branch valve 3 is provided on the branch pipeline. By closing or opening the main valve 2, it can be used to simultaneously control the stopping or continuous introduction of fuel in all branch pipelines of the natural gas liquefied gas intake pipeline 1. The branch valve 3 can control a single nozzle 6 respectively, so as to facilitate the subsequent adjustment of the flame size.

[0026] In the utility model, one end of the nozzle 6 away from the swirl flame distribution ring 9 extends to the outside of the shell and is connected to the distribution pipe. The end of the nozzle 6 exposed outside the shell is provided with an adjustable air inlet 5. The size of the adjustable air inlet 5 can be adjusted to control the air entering the two sides, thereby controlling the flame size and achieving flame-free scouring.

[0027] In the utility model, a micro-hole flame nozzle 7 is provided at one end of the nozzle 6 facing the swirl flame distribution ring 9, and the flame is ejected from the micro-hole flame nozzle 7.

[0028] In the utility model, the swirl flame distribution ring 9 includes an adjusting member 90 and an adjusting member 91 which are stacked. The adjusting member 90 is fixed to the fire hood 8. A connecting rod 92 is provided on the adjusting member 90. The adjusting member 91 is sleeved on the connecting rod 92 and can rotate relative to the adjusting member 90. A plurality of through holes 93 are provided on the adjusting member 90 and the adjusting member 91. When the through holes 93 on the adjusting member 90 are connected with the through holes 93 on the adjusting member 91, a hole 94 for flame ejection is formed. By rotating the adjusting member 91, the position of the adjusting member 91 relative to the adjusting member 90 can be adjusted, thereby adjusting the size of the hole 94, thereby realizing the adjustment of the size of the flame ejection.

[0029] In the utility model, both the adjusting member 90 and the adjusting member 91 include a plurality of blades, one end of the plurality of blades on the adjusting member 90 is connected to the connecting rod 92, one end of the plurality of blades on the adjusting member 91 is connected to each other and encloses a connecting hole, the connecting hole corresponds to the connecting rod 92, the adjusting member 91 is connected to the connecting rod 92 through the connecting hole, the other end of the blade of the adjusting member 90 is fixed to the inner wall of the fire hood 8, and the gap between two adjacent blades forms a through hole 93; the inner wall of the fire hood 8 is provided with a groove 80 for the blade of the adjusting member 91 to be embedded, the other end of the blade of the adjusting member 91 is movably connected to the groove 80, and the size of the hole can be adjusted by manually rotating the adjusting member 91.

[0030] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A flameless scour combustion test system, characterized in that: It includes a shell, wherein a plurality of nozzles are arranged inside the shell, wherein the nozzles are connected to a natural gas liquefied air intake pipe, a fire collecting hood is arranged at the end of the shell, a swirl flame distribution ring is arranged on the fire collecting hood, a plurality of holes connected to the outside are arranged on the swirl flame distribution ring, and the nozzles are arranged toward the swirl flame distribution ring.

2. A flameless scour combustion test system according to claim 1, characterized in that: The natural gas liquefied gas inlet pipeline is provided with a main valve.

3. A flameless scour combustion test system according to claim 2, characterized in that: The natural gas liquefied gas intake pipeline includes a main pipeline and a plurality of branch pipelines connected one by one with the plurality of the nozzles, and branch valves are arranged on the branch pipelines.

4. A flameless scour combustion test system according to claim 3, characterized in that: One end of the nozzle facing away from the swirl flame distribution ring extends to the outside of the shell and is connected to the branch pipe. An adjustable air inlet is provided at one end of the nozzle exposed outside the shell.

5. The flameless scour combustion test system according to claim 1, characterized in that: One end of the nozzle facing the swirl flame distribution ring is provided with a micro-hole flame outlet.

6. The flameless scour combustion test system according to claim 1, characterized in that: The swirl flame distribution ring includes an adjusting member 1 and an adjusting member 2 which are stacked. The adjusting member 1 is fixed to the fire collecting hood. A connecting rod is provided on the adjusting member 1. The adjusting member 2 is sleeved on the connecting rod and can rotate relative to the adjusting member 1. A plurality of through holes are provided on the adjusting member 1 and the adjusting member 2.

7. A flameless scour combustion test system according to claim 6, characterized in that: Both the adjusting member 1 and the adjusting member 2 include a plurality of blades, one end of the plurality of blades of the adjusting member 1 is connected to a connecting rod, and the plurality of blades of the adjusting member 2 are connected to each other and form a connecting hole corresponding to the connecting rod; the other end of the plurality of blades of the adjusting member 1 is connected to an inner wall of the fire collecting hood, a groove is concavely provided on the inner wall of the fire collecting hood, and the other end of the plurality of blades of the adjusting member 2 is embedded in the groove and movably connected to the groove.

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