Constant volume combustion bomb and in-bomb combustion testing device and method thereof

Abstract

The invention discloses a constant-volume combustion bomb and an in-bomb combustion testing device and method thereof, and belongs to the technical field of combustion, and the front side surface and the rear side surface of a shell of the constant-volume combustion bomb are respectively provided with a front window and a rear window which are used for observing the combustion flame condition from the front-back direction; a left window and a right window are arranged on the left side face and the right side face of a shell of the constant-volume combustion bomb respectively and used for observing the flame combustion condition from the left direction and the right direction. An upper corner window and a lower corner window are arranged on the upper front left corner section and the lower rear right corner section of the shell of the constant-volume combustion bomb respectively and used for observing the condition of combustion flame from the inclined upper portion or the inclined lower portion of the combustion flame of the shell of the constant-volume combustion bomb. According to the invention, the combustion flame can be observed from the front side, the back side, the left side or the right side of the combustion flame, and the combustion flame can be observed from the inclined upper side or the inclined lower side of the combustion flame, so that the angle and the visual field range of window observation are greatly widened.

Description

Technical Field

[0001] The present invention relates to the field of combustion technology, and in particular to a constant volume combustion bomb and a device and method for testing combustion in the bomb. Background Art

[0002] The constant volume combustion bomb is an important research device for studying combustion mechanisms and simulating the combustion process in the engine environment. By introducing a pre-configured mixed fuel gas into the constant volume combustion bomb, a constant volume combustion flame is generated by electrode ignition or spark plug ignition. The changes in the flow field and combustion field of the constant volume combustion bomb after ignition are observed through a window to obtain its constant volume combustion properties.

[0003] Currently, viewing windows are only provided on one of the following directions: the front or back, left or right, top or bottom of a constant volume incendiary bomb, and the number of windows is relatively small, which greatly limits the viewing angle and field of view of the windows, making it difficult to observe the combustion flame during the research of the constant volume incendiary bomb. In addition, during the research of constant volume incendiary bombs, it is usually adopted to set an upper electrode and a lower electrode to form a pair of electrodes on two opposite parallel planes of the shell of the constant volume incendiary bomb, and observe the combustion flame after ignition of the upper and lower electrodes. The combustion flame obtained by this observation is limited by the arrangement of the upper and lower electrodes.

[0004] In short, in the current research on constant volume incendiary bombs, not only the angle of view and the field of view of the window, but also the ignition of the upper and lower electrodes are limited to two relative parallel planes due to the setting form of the upper and lower electrodes. Summary of the Invention

[0005] In view of the above problems, the purpose of the present invention is to provide a constant volume incendiary bomb and its in-bomb combustion test device and method, which are used to solve the problem that in the current research on constant volume incendiary bombs, not only the angle of view and the field of view of the window are limited, but also the ignition of the upper and lower electrodes is limited to two relative parallel planes due to the setting form of the upper and lower electrodes.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention discloses a constant volume incendiary bomb, comprising a shell, wherein the shell is formed by cutting off the corners of a cube where eight vertices are located;

[0008] The exterior of the shell has a total of 14 planes, including 6 square side faces and 8 equilateral triangular sections, and each equilateral triangular section is adjacent to three adjacent square side faces of the 6 square side faces;

[0009] A combustion chamber is provided inside the shell;

[0010] A gas port is provided on one of the eight equilateral triangular cross-sections of the shell, and the gas port is connected to the combustion chamber;

[0011] An upper electrode and a lower electrode are respectively provided on a pair of mutually parallel square sides of the six square sides of the shell, and the ignition ends of the upper electrode and the lower electrode respectively extend into the interior of the combustion chamber and are adjacent to each other;

[0012] The gas port inputs the fuel mixture to be burned and discharges the gas products after combustion and the unburned fuel mixture;

[0013] The upper electrode and the lower electrode form a set of electrodes for igniting the fuel mixture to be burned in the combustion chamber.

[0014] Preferably, the six square sides are respectively located on the sides of the original cube, namely the upper side, lower side, front side, rear side, left side and right side, wherein the upper side and the lower side are parallel to each other, the front side and the rear side are parallel to each other, and the left side and the right side are parallel to each other; the upper electrode and the lower electrode are respectively arranged on the upper side and the lower side.

[0015] Preferably, the 8 equilateral triangular sections are the equilateral triangular sections left after the corners where the 8 vertices of the original cube are located are cut off by the cross section, and the intersection of each equilateral triangular section and the edge of the original cube is the midpoint of the edge. The 8 equilateral triangular sections are respectively the upper rear right corner section, the upper front right corner section, the upper front left corner section, the upper rear left corner section, the lower rear right corner section, the lower front right corner section, the lower front left corner section and the lower rear left corner section, wherein the upper rear right corner section is the equilateral triangular section left after the rear and right corner of the original upper part of the cube is cut off by the cross section; the upper front right corner section is the equilateral triangular section left after the front and right corner of the original upper part of the cube is cut off by the cross section; the upper front left corner section is the equilateral triangular section left after the front and left corner of the original upper part of the cube is cut off by the cross section The corners of the sides are cut off by the cross section, forming an equilateral triangle section; the upper rear left corner section is the equilateral triangle section formed after the rear and left corner of the original upper cube is cut off by the cross section; the lower rear right corner section is the equilateral triangle section formed after the rear and right corner of the original lower cube is cut off by the cross section; the lower front right corner section is the equilateral triangle section formed after the front and right corner of the original lower cube is cut off by the cross section; the lower front left corner section is the equilateral triangle section formed after the front and left corner of the original lower cube is cut off by the cross section; the lower rear left corner section is the equilateral triangle section formed after the rear and left corner of the original lower cube is cut off by the cross section; the gas port is arranged on the upper rear right corner section.

[0016] In a second aspect, the present invention discloses an in-bomb combustion test device for a constant volume incendiary bomb, comprising the above-mentioned constant volume incendiary bomb, wherein a front window and a rear window are respectively provided on the front side and the rear side of the shell of the constant volume incendiary bomb, and the front window and the rear window are respectively connected to the combustion chamber, and the front window and the rear window are parallel to and opposite to each other; a left window and a right window are respectively provided on the left side and the right side of the shell of the constant volume incendiary bomb, and the left window and the right window are respectively connected to the combustion chamber, and the left window and the right window are parallel to and opposite to each other.

[0017] Furthermore, an upper corner window and a lower corner window are respectively provided on the upper front left corner section and the lower rear right corner section of the shell of the constant volume incendiary bomb, and the upper corner window and the lower corner window are respectively connected to the combustion chamber, and the upper corner window and the lower corner window are parallel to and opposite to each other.

[0018] Furthermore, a pressure sensor hole is provided on the cross section of the lower front left corner, the pressure sensor hole is connected to the combustion chamber, and a pressure sensor is provided on the pressure sensor hole.

[0019] Furthermore, the upper front right corner section and the lower rear left corner section of the shell of the constant volume incendiary bomb are respectively provided with a first corner electrode and a second corner electrode.

[0020] Furthermore, the in-bomb combustion test device of the constant volume incendiary bomb further includes a vacuum pump, the vacuum pump is connected to the gas port through a pipeline, and an exhaust valve is provided on the pipeline connecting the vacuum pump and the gas port;

[0021] The in-bomb combustion test device of the constant volume incendiary bomb further includes a premixed gas tank, which is connected to the gas port via a pipeline, and an air intake valve is provided on the pipeline connecting the premixed gas tank and the gas port.

[0022] Furthermore, the pressure sensor is connected to a combustion bomb pressure gauge through a pipeline, and a pressure gauge valve is provided on the pipeline connecting the combustion bomb pressure gauge and the pressure sensor.

[0023] In a third aspect, the present invention further discloses a method for testing in-bomb combustion of a constant volume incendiary bomb device, using the above-mentioned in-bomb combustion test device of the constant volume incendiary bomb, the method comprising the following steps:

[0024] Step 1: The fuel mixture enters the combustion chamber inside the shell of the constant volume combustion bomb through the gas port;

[0025] Step 2: The upper electrode and the lower electrode cooperate with each other to ignite the fuel mixture inside the combustion chamber. While the fuel mixture is burning, the flame burning situation can be observed from the front and rear directions of the shell through the front window and the rear window, and from the left and right directions of the shell through the left window and the right window; the flame burning situation can be observed from the upper and lower corner windows of the shell diagonally above or below the burning flame.

[0026] In a fourth aspect, the present invention further discloses a method for testing in-bomb combustion of a constant volume incendiary bomb device, using the above-mentioned in-bomb combustion test device of the constant volume incendiary bomb, the method comprising the following steps:

[0027] Step 1: The fuel mixture enters the combustion chamber inside the shell of the constant volume combustion bomb through the gas port;

[0028] Step 2: The first corner electrode and the second corner electrode work together to ignite the premixed fuel gas inside the combustion chamber. While the fuel mixture is burning, the flame combustion is observed from the front and rear directions of the shell through the front window and the rear window; the flame combustion is observed from the left and right directions of the shell through the left window and the right window; and the flame combustion is observed from diagonally above or diagonally below the burning flame of the shell through the upper corner window and the lower corner window.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The present invention discloses a constant volume incendiary bomb, comprising a shell, which is formed by cutting off the corners of a cube at eight vertices; the exterior of the shell has a total of 14 planes, including 6 square side faces and 8 equilateral triangular sections, and each equilateral triangular section is adjacent to three adjacent square side faces of the 6 square side faces; a combustion chamber is provided inside the shell; a gas port is provided on one of the 8 equilateral triangular sections of the shell, and the gas port is connected to the combustion chamber; an upper electrode and a lower electrode are respectively provided on a pair of mutually parallel square sides of the 6 square side faces of the shell, and the ignition ends of the upper electrode and the lower electrode respectively extend into the interior of the combustion chamber and are in close proximity; wherein the gas port inputs a fuel mixture to be burned and discharges gas products after combustion and unburned fuel mixture; the upper electrode and the lower electrode constitute a group of electrodes for igniting the fuel mixture to be burned inside the combustion chamber.

[0031] (2) The present invention discloses an in-bomb combustion test device for a constant volume incendiary bomb, wherein a front window and a rear window are respectively provided on the front side and the rear side of the shell of the constant volume incendiary bomb, and the front window and the rear window are respectively connected to the combustion chamber, and the front window and the rear window are parallel to and directly opposite each other. A left window and a right window are respectively provided on the left side and the right side of the shell of the constant volume incendiary bomb, and the left window and the right window are respectively connected to the combustion chamber, and the left window and the right window are parallel to and directly opposite each other. An upper corner window and a lower corner window are respectively provided on the upper front left corner section and the lower rear right corner section of the shell of the constant volume incendiary bomb, and the upper corner window and the lower corner window are respectively connected to the combustion chamber, and the upper corner window and the lower corner window are parallel to and directly opposite each other. The front and rear viewing windows are used to observe the combustion flames after the upper and lower electrodes are ignited from the front and back; the left and right viewing windows are used to observe the combustion flames after the upper and lower electrodes are ignited from the left and right directions; and the upper and lower corner windows are used to observe the combustion flames from diagonally above or below the shell of the constant volume incendiary bomb. This not only allows observation of the combustion flames from the front, back, left, or right, but also from all sides, greatly expanding the viewing angle and field of view of the windows and solving the problem of limited viewing angles and field of view.

[0032] (3) The present invention discloses an in-bomb combustion test device for a constant volume incendiary bomb, which includes an additional set of ignition electrodes. A first corner electrode and a second corner electrode are provided at the upper front right corner section and the lower rear left corner section of the shell of the constant volume incendiary bomb, respectively. The first corner electrode and the second corner electrode cooperate with each other to form a set of electrodes capable of ignition. In addition to providing an upper electrode and a lower electrode to form a pair of electrodes on two opposing parallel planes, the present invention provides a method of providing a pair of electrodes at a pair of corners of the shell of the constant volume incendiary bomb, thereby resolving the current problem that ignition by the upper and lower electrodes is limited to being provided on two opposing parallel planes. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the shell of a constant volume incendiary bomb provided in Example 1 of the present invention, formed by cutting off the corners of the eight vertices of a cube;

[0034] Figure 2 A schematic diagram of the shell of a constant volume incendiary bomb provided in Example 2 of the present invention, formed by cutting off the corners of the eight vertices of a cube;

[0035] Figure 3 This is a schematic diagram of the outer contour of the shell of a constant volume incendiary bomb provided in Example 2 of the present invention, wherein the midline of the upper side surface and the midlines of the equilateral triangular cross-sections on both sides, and the midline of the lower side surface and the midlines of the equilateral triangular cross-sections on both sides form a hexagon, as shown by the dotted line;

[0036] Figure 4 for Figure 3 The spatial view of the shell of the constant volume incendiary bomb after removing the obstruction;

[0037] Figure 5 This is a schematic diagram of the overall structure of the in-bomb combustion test device for a constant volume incendiary bomb provided in Example 3 of the present invention.

[0038] Description of reference numerals: A-cube, A1-upper side, A2-lower side, A3-front side, A4-back side, A5-right side, A6-left side;

[0039] B-shell, B1-upper rear right corner section, B2-upper front right corner section, B3-upper front left corner section, B4-upper rear left corner section, B5-lower rear right corner section, B6-lower front right corner section, B7-lower front left corner section;

[0040] C-combustion chamber, O-gas port;

[0041] D1-upper electrode, D2-lower electrode;

[0042] E3-front window, E4-rear window, E5-right window, E6-left window;

[0043] F3-upper corner window, F5-lower corner window;

[0044] F6-lower bolt hole;

[0045] X-pressure sensor;

[0046] G2-first corner electrode, G8-second corner electrode;

[0047] 10-vacuum pump, 11-exhaust valve;

[0048] 20-premixed gas tank, 21-premixed gas tank pressure gauge, 22-premixed gas tank pressure gauge valve, 23-intake valve;

[0049] 30-main valve;

[0050] 40-combustion bomb pressure gauge, 41-pressure gauge valve. DETAILED DESCRIPTION

[0051] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0052] In view of the problem that the current research and observation of incendiary bombs usually adopts direct observation from the front or back, above or below, or above or below the burning flame, and there is no way to observe the burning flame from obliquely above or below the burning flame, a front window E3 and a rear window E4 are respectively provided on the front side A3 and the rear side A4 of the shell B of the present invention, which are used to observe the burning flame after the upper electrode D1 and the lower electrode D2 are ignited from the front and back directions; a left window E6 and a right window E5 are respectively provided on the left side A6 and the right side A5 of the shell B of the constant volume incendiary bomb, which are used to observe the flame burning after the upper electrode D1 and the lower electrode D2 are ignited from the left and right directions; an upper corner window F3 and a lower corner window F5 are respectively provided on the upper front left corner section B3 and the lower rear right corner section B5 of the shell B of the constant volume incendiary bomb, which are used to observe the burning flame from obliquely above or below the burning flame of the shell B of the constant volume incendiary bomb.

[0053] To address the current issue of upper and lower electrode ignition being limited by their respective placement, Example 3 of the present invention provides an in-bomb combustion test device for a constant volume incendiary bomb, which incorporates a set of ignition electrodes. The upper front right corner section B2 and the lower rear left corner section of the shell B of the constant volume incendiary bomb are respectively provided with a first corner electrode G2 and a second corner electrode G8. The first corner electrode G2 and the second corner electrode G8 cooperate to form a set of electrodes capable of ignition. In addition to providing a pair of electrodes by placing an upper and lower electrode on two opposing parallel planes, the present invention provides a pair of electrodes at a pair of corners of the shell B of the constant volume incendiary bomb, addressing the current issue of upper and lower electrode ignition being limited by their placement on two opposing parallel planes.

[0054] Example 1: A constant volume incendiary bomb

[0055] Embodiment 1 of the present invention provides a constant volume incendiary bomb, and its structure is described in detail below with reference to the accompanying drawings.

[0056] refer to Figure 1 The constant volume incendiary bomb includes a shell B, which is formed by cutting off the corners of the eight vertices of the cube A. Figure 1 shown.

[0057] The exterior of the shell B has a total of 14 planes, including 6 square side surfaces and 8 equilateral triangular sections, and each equilateral triangular section is adjacent to three adjacent square side surfaces of the 6 square side surfaces.

[0058] A combustion chamber C is provided inside the housing B;

[0059] A gas port O is provided on one of the eight equilateral triangular cross-sections of the shell B, and the gas port O is connected to the combustion chamber C;

[0060] An upper electrode D1 and a lower electrode D2 are respectively provided on a pair of mutually parallel square sides among the six square sides of the shell B, and the ignition ends of the upper electrode D1 and the lower electrode D2 respectively extend into the interior of the combustion chamber C and are adjacent to each other.

[0061] The gas port O is used to input the fuel mixture to be burned and to discharge the gaseous products and unburned fuel mixture after combustion. As a conventional technical measure, a 15 MPa bursting disc is installed at the gas port O to provide pressure protection for the container, valve, and pipeline. In a specific embodiment, the fuel mixture is a mixture of hydrogen and air in a proportional ratio.

[0062] The upper electrode D1 and the lower electrode D2 constitute a set of electrodes for igniting the fuel mixture to be burned inside the combustion chamber C.

[0063] Specifically, the six square side surfaces are located on the sides of the original cube A, namely the upper side surface A1, the lower side surface A2, the front side surface A3, the rear side surface A4, the right side surface A5 and the left side surface A6, wherein the upper side surface A1 and the lower side surface A2 are parallel to each other, the front side surface A3 and the rear side surface A4 are parallel to each other, and the left side surface A6 and the right side surface A5 are parallel to each other. Figure 1 shown.

[0064] Specifically, the upper electrode D1 and the lower electrode D2 are disposed on the upper side surface A1 and the lower side surface A2, respectively. As a specific example, the upper side surface A1 and the lower side surface A2 of the shell B are respectively provided with an upper electrode hole and a lower electrode hole, each of which extends into the interior of the combustion chamber C and communicates with the combustion chamber C. The upper electrode D1 and the lower electrode D2 are disposed as a set of electrodes on the upper electrode hole and the lower electrode hole, respectively, and the ignition ends of the upper electrode D1 and the lower electrode D2 extend into the combustion chamber C and are in close proximity to each other to meet ignition requirements. The following description of providing a window on a plane is similar to this, in that a hole is first provided, and the hole is connected to the combustion chamber C, and finally a window is provided on the hole.

[0065] Specifically, the eight equilateral triangular sections are the equilateral triangular sections left after the corners of the eight vertices of the original cube A are cut off by the cross-section. The intersection of each equilateral triangular section and the edge of the original cube A is the midpoint of the edge. The eight equilateral triangular sections are the upper rear right corner section B1, the upper front right corner section B2, the upper front left corner section B3, the upper rear left corner section B4, the lower rear right corner section B5, the lower front right corner section B6, the lower front left corner section B7 and the lower rear left corner section.

[0066] Continue to refer Figure 1The upper rear right corner section B1 is a regular triangular section left after the rear right corner of the upper part of the original cube A is cut off;

[0067] The upper front right corner section B2 is a regular triangular section left after the upper front right corner of the original cube A is cut off;

[0068] The upper front left corner section B3 is a regular triangular section left after the upper front left corner of the original cube A is cut off;

[0069] The upper rear left corner section B4 is a regular triangular section left after the rear left corner of the upper portion of the original cube A is cut off;

[0070] The lower rear right corner section B5 is a regular triangle section left after the rear right corner of the lower part of the original cube A is cut off;

[0071] The lower front right corner section B6 is a regular triangle section left after the front right corner of the lower part of the original cube A is cut off;

[0072] The lower front left corner section B7 is a regular triangle section left after the front left corner of the lower part of the original cube A is cut off;

[0073] The lower rear left corner cross section is a regular triangle cross section left after the rear and left corner of the lower part of the original cube A is cut off by the cross section.

[0074] The gas port O is provided on the upper rear right corner section B1.

[0075] Example 2: A device for testing the combustion inside a constant volume incendiary bomb

[0076] Embodiment 2 of the present invention provides an in-bomb combustion test device for a constant volume incendiary bomb, including the constant volume incendiary bomb of embodiment 1. The structure thereof will be described in detail below with reference to the accompanying drawings.

[0077] In order to observe the combustion flame of the upper electrode D1 and the lower electrode D2 after ignition from the front and back directions, refer to Figures 2 to 4 A front window E3 and a rear window E4 are respectively provided on the front side A3 and the rear side A4 of the shell B of the constant volume incendiary bomb, and the front window E3 and the rear window E4 are respectively connected to the combustion chamber C, and the front window E3 and the rear window E4 are parallel to and opposite to each other.

[0078] It should be noted that "facing" here and below means that light can pass through a window such as the front window E3 and then exit from another window such as the rear window E4 opposite to the front window E3, so as to ensure that the flame combustion in the combustion chamber C can be observed from the front and back directions, left and right directions, or obliquely upward and obliquely downward directions.

[0079] The front and rear viewing windows E3 and E4 are equipped with a high-speed schlieren combustion data acquisition and analysis system. This system includes a high-speed camera that observes the combustion flames of the upper and lower electrodes D1 and D2 from front to back through the front and rear viewing windows E3 and E4.

[0080] Similarly, in order to observe the flame burning of the upper electrode D1 and the lower electrode D2 from the left and right directions, continue to refer to Figures 2 to 4 A left window E6 and a right window E5 are respectively provided on the left side A6 and the right side A5 of the shell B of the constant volume incendiary bomb. The left window E6 and the right window E5 are respectively connected to the combustion chamber C, and the left window E6 and the right window E5 are parallel to and opposite to each other.

[0081] The left and right viewing windows E6 and E5 are equipped with a planar laser-induced fluorescence (PLIF) system. This system consists of a dye laser and a high-speed camera. The fuel mixture to be combusted produces intermediate products of corresponding components during combustion. The dye laser emits a 314nm wavelength ribbon laser, which excites these intermediate products of the premixed fuel gas within combustion chamber C, causing them to fluoresce. The high-speed camera, through the left and right viewing windows E6 and E5, observes the combustion flames after ignition of the upper and lower electrodes D1 and D2 from both sides.

[0082] The front window E3 and the rear window E4 are located on the front side surface A3 and the rear side surface A4, respectively. Since the front side surface A3 and the rear side surface A4 are parallel to each other, the front window E3 and the rear window E4 can be parallel to each other. Similarly, the right window E5 and the left window E6 are located on the left side surface A6 and the right side surface A5, respectively. Since the left side surface A6 and the right side surface A5 are parallel to each other, the right window E5 and the left window E6 can be parallel to each other.

[0083] It is worth mentioning that the shape of the shell B of this constant volume incendiary bomb is unique. The line connecting the upper electrode D1 and the lower electrode D2 is not only perpendicular to the normal of the surface on which the front window E3 or rear window E4 is located, but also perpendicular to the normal of the surface on which the right window E5 or left window E6 is located. In addition, the normal of the surface on which the front window E3 or rear window E4 is located is perpendicular to the normal of the surface on which the right window E5 or left window E6 is located.

[0084] In order to observe the burning flame from the upper or lower side of the shell B of the constant volume incendiary bomb, continue to refer to Figures 2 to 4 The upper front left corner section B3 and the lower rear right corner section B5 of the shell B of the constant volume incendiary bomb are respectively provided with an upper corner window F3 and a lower corner window F5, and the upper corner window F3 and the lower corner window F5 are respectively connected to the combustion chamber C, and the upper corner window F3 and the lower corner window F5 are parallel to and opposite to each other.

[0085] Among them, the upper corner window F3 and the lower corner window F5 are equipped with a high-speed Schlieren combustion data acquisition and analysis system. The high-speed Schlieren combustion data acquisition and analysis system is the same as above and will not be repeated here.

[0086] In order to observe the pressure changes during the combustion process in the combustion chamber C, a pressure sensor hole is provided on the lower front left corner section B7. The pressure sensor hole is connected to the combustion chamber C, and a pressure sensor X is provided on the pressure sensor hole.

[0087] In order to facilitate the fixation of the shell B of the constant volume incendiary bomb, a number of upper bolt holes and a number of lower bolt holes F6 are respectively provided on the upper rear left corner section B4 and the lower front right corner section B6. The bolt holes are used to fix the shell B of the constant volume incendiary bomb by bolt connection.

[0088] Example 3: A device for testing the combustion inside a constant volume incendiary bomb

[0089] In order to ignite the mixed fuel gas in the combustion chamber C from the oblique upper or lower side of the shell B of the constant volume incendiary bomb, Example 3 of the present invention provides an in-bomb combustion test device for a constant volume incendiary bomb. On the basis of Example 2, another set of ignition electrodes is added.

[0090] Specifically, refer to Figures 2 to 4 The upper front right corner section B2 and the lower rear left corner section of the shell B of the constant volume incendiary bomb are respectively provided with a first corner electrode G2 and a second corner electrode G8. The first corner electrode G2 and the second corner electrode G8 cooperate with each other to form a group of electrodes capable of ignition.

[0091] Among them, the windows used to observe the combustion flame after the upper electrode D1 and the lower electrode D2 are ignited are the same as those in the above embodiment 2, including the front window E3 and the rear window E4, the left window E6 and the right window E5, and the upper corner window F3 and the lower corner window F5, which will not be repeated here.

[0092] Example 4: A device for testing the combustion inside a constant volume incendiary bomb

[0093] In order to achieve vacuuming and injection of fuel mixture into the combustion chamber C inside the shell B of the constant volume incendiary bomb through the gas port O, Example 4 of the present invention provides an in-bomb combustion test device for a constant volume incendiary bomb. Based on Example 2 or 3, the following improvements are made:

[0094] In order to realize the vacuuming of the combustion chamber C inside the shell B of the constant volume combustion bomb through the gas port O, refer to Figure 5 The constant volume incendiary bomb in-bomb combustion test device further includes a vacuum pump 10, which is connected to the gas port O through a pipeline, and an exhaust valve 11 is provided on the pipeline connecting the vacuum pump 10 and the gas port O.

[0095] In order to inject the fuel mixture into the combustion chamber C inside the shell B of the constant volume combustion bomb through the gas port O, refer to Figure 5 The constant volume incendiary bomb in-bomb combustion test device further includes a premixed gas tank 20, which contains a premixed fuel gas mixture. The premixed gas tank 20 is equipped with a premixed gas tank pressure gauge 21, which is equipped with a premixed gas tank pressure gauge valve 22.

[0096] Continue to refer Figure 5 The premixed gas tank 20 is connected to the gas port O through a pipeline, and an air intake valve 23 is provided on the pipeline connecting the premixed gas tank 20 and the gas port O.

[0097] For easy control, continue to refer to Figure 5 The pipeline connecting the vacuum pump 10 and the gas port O and the pipeline connecting the premixed gas tank 20 and the gas port O share a main pipeline, and a main valve 30 is provided on the main pipeline.

[0098] In order to observe the pressure changes during the combustion process in the combustion chamber C, the pressure sensor X is connected to the combustion bomb pressure gauge 40 through a pipeline. A pressure gauge valve 41 is provided on the pipeline connecting the combustion bomb pressure gauge 40 and the pressure sensor X. Figure 5 shown.

[0099] Example 5: A method for testing combustion inside a constant volume incendiary bomb device

[0100] Embodiment 5 of the present invention provides a method for testing the in-bomb combustion of a constant volume incendiary bomb device, using the in-bomb combustion testing device of the constant volume incendiary bomb of embodiment 2 or 4 to test the constant volume combustion effect thereof, the method comprising the following steps:

[0101] Step 1: The fuel mixture enters the combustion chamber C inside the shell B of the constant volume combustion bomb through the gas port O;

[0102] Step 2: The upper electrode D1 and the lower electrode D2 cooperate with each other to ignite the fuel mixture inside the combustion chamber C. While the fuel mixture is burning, the flame burning is observed from the front and rear directions of the shell B through the front window E3 and the rear window E4, and from the left and right directions of the shell B through the left window E6 and the right window E5; the flame burning is observed from the upper and lower sides of the shell B through the upper corner window F3 and the lower corner window F5.

[0103] Example 6: A method for testing a constant volume incendiary bomb device

[0104] Example 6 of the present invention provides a method for testing the in-bomb combustion of a constant volume incendiary bomb device. The method uses the in-bomb combustion testing device of Example 3 to test the constant volume combustion effect of the constant volume incendiary bomb. The method includes the following steps:

[0105] Step 1: The fuel mixture enters the combustion chamber C inside the shell B of the constant volume combustion bomb through the gas port O;

[0106] Step 2: The first corner electrode G2 and the second corner electrode G8 work in cooperation with each other to ignite the premixed fuel gas inside the combustion chamber C. While the fuel mixture is burning, the flame combustion is observed from the front and rear directions of the shell B through the front window E3 and the rear window E4; the flame combustion is observed from the left and right directions of the shell B through the left window E6 and the right window E5; and the flame combustion is observed from diagonally above or diagonally below the burning flame of the shell B through the upper corner window F3 and the lower corner window F5.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A constant volume incendiary bomb, characterized in that: The invention comprises a shell (B), wherein the shell (B) is formed by cutting off the corners of the eight vertices of a cube (A) by cutting off the cross section; The exterior of the shell (B) has a total of 14 planes, including 6 square side faces and 8 equilateral triangular sections, and each equilateral triangular section is adjacent to three adjacent square side faces of the 6 square side faces; A combustion chamber (C) is provided inside the housing (B); A gas port (O) is provided on one of the eight equilateral triangular cross-sections of the shell (B), and the gas port (O) is connected to the combustion chamber (C); An upper electrode (D1) and a lower electrode (D2) are respectively provided on a pair of mutually parallel square sides of the six square sides of the shell (B), and the ignition ends of the upper electrode (D1) and the lower electrode (D2) respectively extend into and are in close proximity to the interior of the combustion chamber (C); The gas port (O) inputs the fuel mixture to be burned and discharges the gas products after combustion and the unburned fuel mixture; The upper electrode (D1) and the lower electrode (D2) form a set of electrodes for igniting a fuel mixture to be burned inside a combustion chamber (C).

2. The constant volume incendiary bomb according to claim 1, characterized in that: The six square side surfaces are located on the sides of the original cube (A), namely the upper side surface (A1), the lower side surface (A2), the front side surface (A3), the rear side surface (A4), the left side surface (A6) and the right side surface (A5), wherein the upper side surface (A1) and the lower side surface (A2) are parallel to each other, the front side surface (A3) and the rear side surface (A4) are parallel to each other, and the left side surface (A6) and the right side surface (A5) are parallel to each other; The upper electrode (D1) and the lower electrode (D2) are respectively arranged on the upper side surface (A1) and the lower side surface (A2); The 8 equilateral triangular sections are the equilateral triangular sections left after the corners of the 8 vertices of the original cube (A) are cut off by the cross section, and the intersection of each equilateral triangular section and the edge of the original cube (A) is the midpoint of the edge. The 8 equilateral triangular sections are the upper rear right corner section (B1), the upper front right corner section (B2), the upper front left corner section (B3), the upper rear left corner section (B4), the lower rear right corner section (B5), the lower front right corner section (B6), the lower front left corner section (B7) and the lower rear left corner section, wherein the upper rear right corner section (B1) is the equilateral triangular section left after the corner at the rear and right side of the upper part of the original cube (A) is cut off by the cross section; the upper front right corner section (B2) is the equilateral triangular section left after the corner at the front and right side of the upper part of the original cube (A) is cut off by the cross section; the upper front left corner section (B3 ) is the equilateral triangular cross-section left after the front and left corner of the upper part of the original cube (A) is cut off by the cross-section; the upper rear left corner cross-section (B4) is the equilateral triangular cross-section left after the rear and left corner of the upper part of the original cube (A) is cut off by the cross-section; the lower rear right corner cross-section (B5) is the equilateral triangular cross-section left after the rear and right corner of the lower part of the original cube (A) is cut off by the cross-section; the lower front right corner cross-section (B6) is the equilateral triangular cross-section left after the front and right corner of the lower part of the original cube (A) is cut off by the cross-section; the lower front left corner cross-section (B7) is the equilateral triangular cross-section left after the front and left corner of the lower part of the original cube (A) is cut off by the cross-section; the lower rear left corner cross-section is the equilateral triangular cross-section left after the rear and left corner of the lower part of the original cube (A) is cut off by the cross-section; The gas port (O) is arranged on the upper rear right corner section (B1).

3. A constant volume incendiary bomb in-bomb combustion test device, characterized in that: Including the constant volume incendiary bomb according to claim 2, A front viewing window (E3) and a rear viewing window (E4) are respectively provided on the front side (A3) and the rear side (A4) of the shell (B) of the constant volume incendiary bomb, and the front viewing window (E3) and the rear viewing window (E4) are respectively connected to the combustion chamber (C), and the front viewing window (E3) and the rear viewing window (E4) are parallel to and face each other. A left viewing window (E6) and a right viewing window (E5) are respectively provided on the left side (A6) and the right side (A5) of the shell (B) of the constant volume incendiary bomb. The left viewing window (E6) and the right viewing window (E5) are respectively connected to the combustion chamber (C), and the left viewing window (E6) and the right viewing window (E5) are parallel to and face each other.

4. The in-bomb combustion test device of a constant volume incendiary bomb according to claim 3, characterized in that: An upper corner window (F3) and a lower corner window (F5) are respectively provided on the upper front left corner section (B3) and the lower rear right corner section (B5) of the shell (B) of the constant volume incendiary bomb, and the upper corner window (F3) and the lower corner window (F5) are respectively connected to the combustion chamber (C), and the upper corner window (F3) and the lower corner window (F5) are parallel to and opposite to each other.

5. The in-bomb combustion test device of a constant volume incendiary bomb according to claim 4, characterized in that: A pressure sensor hole is provided on the lower front left corner section (B7), the pressure sensor hole is connected to the combustion chamber (C), and a pressure sensor (X) is provided on the pressure sensor hole.

6. The in-bomb combustion test device for a constant volume incendiary bomb according to claim 4, characterized in that: The upper front right corner section (B2) and the lower rear left corner section of the shell (B) of the constant volume incendiary bomb are respectively provided with a first corner electrode (G2) and a second corner electrode (G8).

7. The in-bomb combustion test device for a constant volume incendiary bomb according to claim 3, characterized in that: The constant volume incendiary bomb in-bomb combustion test device further comprises a vacuum pump (10), the vacuum pump (10) is connected to the gas port (O) via a pipeline, and an exhaust valve (11) is provided on the pipeline connecting the vacuum pump (10) and the gas port (O); The constant volume incendiary bomb in-bomb combustion test device further comprises a premixed gas tank (20), the premixed gas tank (20) is connected to the gas port (O) via a pipeline, and an air intake valve (23) is provided on the pipeline connecting the premixed gas tank (20) and the gas port (O).

8. The in-bomb combustion test device for a constant volume incendiary bomb according to claim 5, characterized in that: The pressure sensor (X) is connected to a combustion bomb pressure gauge (40) through a pipeline, and a pressure gauge valve (41) is provided on the pipeline connecting the combustion bomb pressure gauge (40) and the pressure sensor (X).

9. A method for testing the in-bomb combustion of a constant volume incendiary bomb device, using the in-bomb combustion testing device of claim 4, characterized in that: include Step 1: The fuel mixture enters the combustion chamber (C) inside the shell (B) of the constant volume combustion bomb through the gas port (O); Step 2: The upper electrode (D1) and the lower electrode (D2) cooperate with each other to ignite the fuel mixture inside the combustion chamber (C). While the fuel mixture is burning, the flame combustion is observed from the front and rear directions of the shell (B) through the front window (E3) and the rear window (E4), and the flame combustion is observed from the left and right directions of the shell (B) through the left window (E6) and the right window (E5); the flame combustion is observed from the upper and lower sides of the shell (B) through the upper corner window (F3) and the lower corner window (F5).

10. A method for testing in-bomb combustion of a constant volume incendiary bomb device, using the in-bomb combustion testing device of claim 6, characterized in that: include Step 1: The fuel mixture enters the combustion chamber (C) inside the shell (B) of the constant volume combustion bomb through the gas port (O); Step 2: The first corner electrode (G2) and the second corner electrode (G8) work in coordination with each other to ignite the premixed fuel gas inside the combustion chamber (C). While the fuel mixture is burning, the burning of the flame is observed from the front and rear directions of the shell (B) through the front window (E3) and the rear window (E4); the burning of the flame is observed from the left and right directions of the shell (B) through the left window (E6) and the right window (E5); and the burning of the flame is observed from obliquely above or obliquely below the burning flame of the shell (B) through the upper corner window (F3) and the lower corner window (F5).

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