Efficient pipeline type fire retardant device

Abstract

The utility model provides an efficient pipeline type fire retardant device, and belongs to the technical field of fire retardant devices. The efficient pipeline type fire retardant device comprises a shell, a first impact wall, a second impact wall, a fire blocking pore plate, a supporting plate and a dust collecting bin, one end of the first impact wall and one end of the second impact wall are fixed together, and the supporting plate is fixed to the outer wall of the second impact wall; the supporting plate is also fixed in the shell, the fire blocking hole plate is fixed in the shell, the dust collecting bin is fixed on the shell, the efficient pipeline type fire retardant device further comprises a connecting flange, the connecting flange is fixed at the end of the shell, the efficient pipeline type fire retardant device has three fire retardant functions, large-particle sparks are thoroughly and efficiently solved, and the efficient pipeline type fire retardant device is suitable for large-particle sparks. And the device is low in investment, high in fire retarding efficiency, convenient to mount, convenient to arrange the whole purification system, small in occupied space and simple and convenient to use and maintain.

Description

Technical Field

[0001] The present application relates to the technical field of fire arresting devices, and in particular to a high-efficiency pipeline fire arresting device. Background Art

[0002] Domestic industrial furnaces (blast furnaces, coke ovens, converters, submerged arc furnaces, medium frequency furnaces, refining furnaces, electric furnaces, chain grate rotary kilns, pelletizing shaft furnaces, pelletizing bag rotary kilns, drying kilns, sintering machines, glass furnaces, cupolas, aluminum melting furnaces, cement shaft kilns, etc.) will produce high-temperature, high-dust flue gas due to smelting. Some furnaces also produce waste gas components such as sulfur and nitrogen. Environmental protection requires that the flue gas from industrial furnaces cannot be discharged directly. Dust removal, desulfurization and denitrification purification facilities must be installed to ensure that the emissions of particulate matter, sulfur dioxide, nitrogen oxides, etc. after flue gas purification meet or even fall below the prescribed emission standards. Some places even implement ultra-low emission requirements. Flame arrester is a particularly important facility in the flue gas purification system, which plays the role of flame arresting and removing large particles.

[0003] The fire-proofing devices of conventional flue gas purification systems include cyclone dust collectors, sedimentation tanks, etc. Most of them are vertical structures, which are relatively large, occupy a large space, require a large investment, and have a high maintenance ratio. In particular, the flue gas treatment air volume is relatively large, the fire-proofing device occupies a larger space, requires a larger investment, and has higher maintenance costs. The working principle of a high-efficiency cyclone dust collector is to use physical fluid mechanics to separate large particles through centrifugal force through spiral tangential gas flow. The dust removal efficiency is relatively high, which can reach 50%, and can play a good role in the initial dust removal of fire. The working principle of the sedimentation tank is to enter and exit from the bottom, reverse the flue gas flow, reduce the flue gas flow rate, and set a fire baffle to prevent fire. The dust removal efficiency is relatively low, which can reach 30%. Many manufacturers now propose pipeline fire-proofing devices, most of which are not effective, with general fire-proofing capabilities and poor dust removal efficiency. This application proposes a new pipeline high-efficiency fire-proofing device, which can not only play a fire-proofing role, but also have a preliminary dust removal effect, thereby reducing the dust removal pressure of the rear-end dust collector. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a high-efficiency pipeline fire-arresting device, which aims to improve the fire-arresting devices of conventional flue gas purification systems, including cyclone dust collectors, sedimentation tanks, etc. Most of them are vertical structures, which are relatively large, occupy a large space, and require a large investment. In particular, the flue gas treatment air volume is relatively large, and the fire-arresting device occupies a larger space, requires a larger investment, and has higher maintenance costs. The working principle of the high-efficiency cyclone dust collector is to use physical fluid mechanics to separate large particles through spiral tangential gas flow through centrifugal force. The dust removal efficiency is relatively high, which can reach 50%, and can play a good role in the initial dust removal of fire. The working principle of the sedimentation tank is to achieve fire prevention by reverse flue gas flow from bottom to top, reducing the flue gas flow rate, and setting a fire baffle. The dust removal efficiency is relatively low, which can reach 30%. Many manufacturers now propose pipeline fire-arresting devices, most of which are not effective, have general fire-arresting capabilities, and have poor dust removal efficiency.

[0005] This application is implemented as follows:

[0006] The present application provides a high-efficiency pipeline fire-blocking device, comprising an outer shell, a first impact wall, a second impact wall, a fire-blocking hole plate, a support plate and a dust collecting bin, wherein one end of the first impact wall and one end of the second impact wall are fixed together, the support plate is fixed on the outer wall of the second impact wall, the support plate is also fixed in the outer shell, the fire-blocking hole plate is fixed in the outer shell, and the dust collecting bin is fixed on the outer shell.

[0007] In one embodiment of the present application, a connecting flange is further included, and the connecting flange is fixed to the end of the shell.

[0008] In one embodiment of the present application, it further includes an arc-shaped plate, and different arc-shaped plates are respectively fixed on the first impact wall, the second impact wall and the outer shell.

[0009] In one embodiment of the present application, a support base is further included, and the support base is fixed on the outer wall of the shell.

[0010] In one embodiment of the present application, a mounting hole is provided on the support base.

[0011] In one embodiment of the present application, the cavity of the first impact wall is a conical cavity, and the cavity of the second impact wall is a truncated cone cavity.

[0012] In one embodiment of the present application, the fire-blocking hole plate is formed by Ø12 mm holes arranged longitudinally and transversely, and the spacing between the holes is 25 mm.

[0013] In one embodiment of the present application, the cavity flow rate of the shell is controlled at 8-10 m / s.

[0014] The beneficial effects of the present application are as follows: the present application obtains a high-efficiency pipeline fire-blocking device through the above design. When in use, the flue gas flow rate is used to control the collection of large particles. The design value of the pipeline flow rate of the normal flue gas purification system is not less than 15m / s, and is generally controlled at about 18-22m / s. Consideration is made comprehensively based on the flue gas properties, working conditions, temperature and other conditions. Because the flue gas flow rate is lower than 15m / s, the flow velocity of the particles in the flue gas is greater than the suspension velocity, and the dust in the flue gas begins to settle and accumulate, especially the large particles begin to settle first. Therefore, according to the principle of gas fluid mechanics, the inner cavity flow rate of the shell is designed to be lower than 10m / s and controlled at 8-10m / s, which plays the first step of fire blocking, and can reach 80% fire blocking efficiency; the second fire blocking function is provided by the support plate, the first impact wall and The second impact wall is composed of a collision structure, which changes the flue gas flow rate and direction, and collides with the flue gas at a high speed, thereby crushing large particles into small particles, thereby crushing large particles into small particles, and settling the particles through the low flow rate of flue gas, thereby further playing a role in fire prevention and sedimentation, and the fire prevention efficiency can reach 95%; the third fire prevention function is composed of a fire-blocking hole plate, which changes the movement trajectory of large particles of Mars by changing the flue gas flow rate and direction, thereby further playing a role in fire prevention and sedimentation, and the fire prevention efficiency can reach 99% through the fire-blocking hole plate. This high-efficiency pipeline fire prevention device has a total of three fire prevention functions, which can thoroughly and efficiently solve the problem of large particles of Mars, and has low investment, high fire prevention efficiency, easy installation, convenient overall purification system layout, small footprint and simple use and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a high-efficiency pipeline fire-arresting device provided in an embodiment of the present application;

[0017] Figure 2 A cross-sectional view of the housing and connecting flange provided in an embodiment of the present application;

[0018] Figure 3 A diagram showing the relationship between the first impact wall, the curved plate, the support plate, the second impact wall, and the fire-blocking hole plate provided in an embodiment of the present application;

[0019] Figure 4 A cross-sectional view of the first impact wall and the second impact wall provided in an embodiment of the present application.

[0020] In the figure: 110 - housing; 120 - connecting flange; 130 - first impact wall; 140 - second impact wall; 150 - fire-blocking hole plate; 160 - support plate; 170 - curved plate; 180 - dust collecting bin; 190 - support base; 191 - mounting hole. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] Example

[0023] See also Figures 1-4 The present application provides a technical solution: a high-efficiency pipeline fire-blocking device, comprising a shell 110, a first impact wall 130, a second impact wall 140, a fire-blocking hole plate 150, a support plate 160 and a dust collecting bin 180, one end of the first impact wall 130 and one end of the second impact wall 140 are fixed together, the support plate 160 is fixed to the outer wall of the second impact wall 140, the support plate 160 is also fixed in the shell 110, the fire-blocking hole plate 150 is fixed in the shell 110, the dust collecting bin 180 is fixed on the shell 110, and further comprising a connecting flange 120, the connecting flange 120 being fixed to the end of the shell 110, and the arrangement of the connecting flange 120 facilitates the installation and fixation of the shell 110;

[0024] It also includes an arc plate 170. Different arc plates 170 are respectively fixed on the first impact wall 130, the second impact wall 140 and the outer shell 110. The arc plate 170 is set to protect the support plate 160. It also includes a support seat 190. The support seat 190 is fixed on the outer wall of the outer shell 110. The setting of the support seat 190 is convenient for supporting the outer shell 110. A mounting hole 191 is opened on the support seat 190. The setting of the mounting hole 191 is convenient for installing the support seat 190. The cavity of the first impact wall 130 is a conical cavity, and the cavity of the second impact wall 140 is a frustum cavity. The fire-blocking hole plate 150 is composed of Ф12mm holes arranged longitudinally and transversely, and the holes are arranged longitudinally and transversely with a spacing of 25mm. By changing the flue gas flow rate and flow direction, the movement trajectory of large-particle sparks is changed, thereby further playing a role in fire prevention and sedimentation. The cavity flow rate of the outer shell 110 is controlled at 8-10m / s, which plays the first step of fire prevention.

[0025] Specifically, the working principle of the high-efficiency pipeline fire arrester is as follows: when in use, the flue gas flow rate is used to control the collection of large particles. The design value of the pipeline flow rate of the normal flue gas purification system is not less than 15m / s, and is generally controlled at about 18-22m / s, based on comprehensive considerations of the flue gas properties, working conditions, temperature, etc. Because the flue gas flow rate is lower than 15m / s, the flow velocity of the particles in the flue gas is greater than the suspension velocity, and the dust in the flue gas begins to settle and accumulate, especially the large particles begin to settle first. Therefore, according to the principle of gas fluid mechanics, the inner cavity flow rate of the shell 110 is designed to be lower than 10m / s and controlled at 8-10m / s, which plays the first step of fire arresting and can reach 80% fire arresting efficiency; the second fire arresting function is composed of the support plate 160, the first impact wall 130 and the second impact wall 1 The collision structure composed of 40 changes the flue gas flow rate and flow direction, collides with the flue gas at a high speed, and crushes large particles into small particles, thereby crushing large particles into small particles, and settling the particles through the low flow rate of flue gas, further playing a role of fire prevention and sedimentation, and the fire prevention efficiency can reach 95%; the third fire prevention function is composed of the fire prevention hole plate 150, which changes the movement trajectory of large particles of sparks by changing the flue gas flow rate and flow direction, thereby further playing a role of fire prevention and sedimentation, and the fire prevention efficiency can reach 95%. The high-efficiency pipeline fire prevention device has a total of three fire prevention functions, which can thoroughly and efficiently solve the problem of large particles of sparks, and has low investment, high fire prevention efficiency, easy installation, convenient overall purification system layout, small footprint and simple use and maintenance.

[0026] The above are merely examples of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application. It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

Claims

1. A high-efficiency pipeline fire arrester, characterized in that: The invention comprises an outer shell (110), a first impact wall (130), a second impact wall (140), a fire-blocking hole plate (150), a support plate (160) and a dust collecting bin (180), wherein one end of the first impact wall (130) and one end of the second impact wall (140) are fixed together, the support plate (160) is fixed on the outer wall of the second impact wall (140), the support plate (160) is also fixed in the outer shell (110), the fire-blocking hole plate (150) is fixed in the outer shell (110), and the dust collecting bin (180) is fixed on the outer shell (110).

2. A high-efficiency pipeline fire-stop device according to claim 1, characterized in that: It also includes a connecting flange (120), which is fixed to the end of the shell (110).

3. A high-efficiency pipeline fire-arresting device according to claim 1, characterized in that: It also includes an arc-shaped plate (170), and different arc-shaped plates (170) are respectively fixed on the first impact wall (130), the second impact wall (140) and the shell (110).

4. A high-efficiency pipeline fire-stop device according to claim 1, characterized in that: It also includes a support base (190), and the support base (190) is fixed on the outer wall of the shell (110).

5. A high-efficiency pipeline fire-arresting device according to claim 4, characterized in that: The support seat (190) is provided with a mounting hole (191).

6. A high-efficiency pipeline fire-stop device according to claim 1, characterized in that: The cavity of the first impact wall (130) is a conical cavity, and the cavity of the second impact wall (140) is a truncated cone cavity.

7. The high-efficiency pipeline fire arrester according to claim 1, characterized in that: The fire-blocking hole plate (150) is formed by Ø12 mm holes arranged longitudinally and transversely, with a spacing of 25 mm between the holes.

8. The high-efficiency pipeline fire-stop device according to claim 1, characterized in that: The cavity flow rate of the housing (110) is controlled at 8-10 m / s.

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