A flue gas channel structure to prevent smoke backflow

Abstract

This utility model relates to the field of smoke generator technology, and more specifically to a smoke generator channel structure for preventing smoke backflow. It includes a fixing frame for securing the ceramic tube of the smoke generator channel and a limiting frame hinged to one side of the fixing frame via a rotating shaft. It also includes a fastening device: installed on the end face of the fixing frame near the limiting frame, used to lock the limiting frame and the fixing frame; and a limiting ring: fixed to the end face of the limiting frame near the fixing frame, with at least two limiting grooves on its inner circumference for positioning the lead wire of the straight flame strip, etc. This utility model achieves the core effect of preventing smoke backflow during flame strip combustion by using a detachable limiting plate and limiting ring in synergy to form a rigid sealing interface, combined with axial pressure locking by a butterfly bolt. Furthermore, the limiting grooves precisely engage the lead wire of the straight flame strip, and the limiting holes fix the head of the annular flame strip, achieving a universal effect compatible with four different sizes of flame strips (diameter 45-60mm / length 35-70cm).

Description

Technical Field

[0001] This utility model relates to the field of smoke furnace technology, and more specifically to a smoke furnace channel structure that prevents smoke backflow. Background Technology

[0002] Existing ground-based smoke generators for artificial weather modification fall into four independent systems: Zhongtian smoke generators are specifically designed for YD-1 series fuse ignition strips with a diameter of 45mm and a length of 35cm; Zhongbing smoke generators are compatible with ZBZ-DFL series fuse ignition strips of the same size (45mm diameter, 35cm length); Guoke smoke generators are only compatible with 60 / 700 series fuse ignition strips with a diameter of 60mm and a length of 70cm; and Northern Civil Explosives smoke generators are designed for DT-46 series annular ignition strips with a diameter of 46mm and a length of 37cm. This rigid matching mode of "one generator, one flame strip" leads to… Severe technical barriers exist – meteorological departments are unable to allocate flame strip resources across different models. For example, China Ordnance's smoke generators cannot use their stockpiled YD-1 flame strips, and Guoke's smoke generators refuse to use DT-46 flame strips. Furthermore, the ring ignition mechanism of Northern Civil Explosives' smoke generators is mutually exclusive with the other three types of fuse ignition structures, further exacerbating the equipment island effect. In practice, operating units are forced to deploy four smoke generator systems simultaneously to meet different rain enhancement needs. This not only doubles the equipment procurement costs and increases the burden of field maintenance, but also causes operational delays due to flame strip-smoke generator mismatch during emergency weather interventions, becoming a key bottleneck in the artificial weather modification operation system. Utility Model Content

[0003] The purpose of this utility model is to provide a flue gas channel structure that is compatible with both annular and straight flame strips and can prevent smoke backflow in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] This utility model proposes a flue gas furnace channel structure to prevent smoke backflow, including a fixing frame for fixing the ceramic tube of the flue gas furnace channel and a limiting frame hinged to one side of the fixing frame via a rotating shaft hinge, and further including:

[0006] Fastening device: Installed on the end face of the fixed frame near the limiting frame, used to lock the limiting frame and the fixed frame;

[0007] Limiting ring: It is fixed to the end face of the limiting frame near the fixed frame, and its inner circumference is provided with at least two limiting grooves for positioning the lead wire of the straight ignition strip;

[0008] At least two limiting pins: fixed to the end face of the limiting frame near the fixed frame and located inside the limiting ring, used to axially tighten the flame strip;

[0009] Fixed plate: It is detachably installed on the end face of the limiting frame near the fixed frame and located inside the limiting ring;

[0010] At least two electrode spring contacts: mounted on a fixed plate, for contacting the annular electrode of the annular flame strip;

[0011] Limiting plate: It is detachably installed on the fixed frame and is equipped with limiting holes for fixing the annular ignition strip or the straight ignition strip;

[0012] The limiting ring and the limiting plate work together to form a relatively sealed space to prevent smoke backflow when the flame is burning.

[0013] As a preferred technical solution of this utility model, the fastening device includes a hinge shaft, two bases with holes and a butterfly bolt;

[0014] Two perforated bases are fixed to the end face of the fixed frame near the limiting frame;

[0015] The hinge shaft is rotatably connected between two perforated bases;

[0016] The wing bolt is fixed to the hinge shaft;

[0017] The limiting frame has a slot, and the butterfly bolt engages and locks with the slot.

[0018] As a preferred technical solution of this utility model, the four corners of the limiting plate are rounded.

[0019] As a preferred technical solution of this utility model, the limiting top posts are symmetrically distributed above and below or to the left and right of the fixing plate.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model achieves the core effect of blocking the backflow of smoke from flame burning by forming a rigid sealing interface through the cooperation of a detachable limiting plate and a limiting ring, combined with the axial pressure locking of the butterfly bolt.

[0022] This utility model achieves a universal effect by precisely engaging the lead wire of the straight flame strip with a limiting groove and fixing the head of the annular flame strip with a limiting hole, thus being compatible with four different sizes of flame strips (diameter 45-60mm / length 35-70cm).

[0023] This invention achieves an integrated effect of adapting a single structure to two types of ignition methods by adaptively compressing the contact lead electrode or annular electrode through the elastic compression stroke of the electrode spring contact.

[0024] This invention achieves a stable effect of counteracting the recoil force after combustion and maintaining the integrity of the seal by symmetrically distributing the limiting top posts to tighten the tail of the flame strip. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of Example 1;

[0027] Figure 3 This is a schematic diagram of the structure of Example 2.

[0028] Figure 4 yes Figure 1 A schematic diagram of the left-side planar structure.

[0029] Reference numerals in the attached diagram: 1-Fixed frame, 2-Limiting frame, 3-Limiting ring, 4-Snap-fit ​​structure, 41-Hinge shaft, 42-Base with hole, 43-Wing bolt, 44-Slotted groove, 5-Rotating hinge, 6-Limiting top post, 7-Fixed plate, 8-Electrode spring contact, 9-Limiting groove, 10-Limiting plate, 11-Limiting hole, A-Annular ignition strip, B-Straight ignition strip. Detailed Implementation

[0030] like Figure 1 , 4 As shown, this utility model proposes a flue gas furnace channel structure to prevent smoke backflow, including a fixing frame for fixing the ceramic tube of the flue gas furnace channel and a limiting frame hinged to one side of the fixing frame via a rotating shaft hinge, and further including:

[0031] Fastening device: Installed on the end face of the fixed frame near the limiting frame, used to lock the limiting frame and the fixed frame;

[0032] Limiting ring: It is fixed to the end face of the limiting frame near the fixed frame, and its inner circumference is provided with at least two limiting grooves for positioning the lead wire of the straight ignition strip;

[0033] At least two limiting pins: fixed to the end face of the limiting frame near the fixed frame and located inside the limiting ring, used to axially tighten the flame strip;

[0034] Fixed plate: Installed in a detachable manner (by screw or bolt thread connection) on the end face of the limiting frame near the fixed frame and located inside the limiting ring;

[0035] At least two electrode spring contacts: mounted on a fixed plate, for contacting the annular electrode of the annular flame strip;

[0036] Limiting plate: It is detachably installed on the fixed frame (by screw or bolt thread connection) and is equipped with limiting holes (the limiting holes can be freely replaced and are compatible with four different sizes of flame strips) to fix the annular ignition flame strip or the straight ignition flame strip;

[0037] The limiting ring and the limiting plate work together to form a relatively sealed space to prevent smoke backflow when the flame is burning.

[0038] As a preferred technical solution of this utility model, the fastening device includes a hinge shaft, two perforated bases and a butterfly bolt (the adjustable pressure of the butterfly bolt adapts to the sealing requirements of flame strips of different sizes, achieving a zero-leakage and anti-backflow effect).

[0039] Two perforated bases are fixed to the end face of the fixed frame near the limiting frame;

[0040] The hinge shaft is rotatably connected between two perforated bases;

[0041] The wing bolt is fixed to the hinge shaft;

[0042] The limiting frame has a slot, and the butterfly bolt engages and locks with the slot.

[0043] The four corners of the limiting plate are rounded to prevent scratching the electrode wires.

[0044] The limiting top posts are symmetrically distributed above, below, or to the left and right of the fixed plate.

[0045] like Figure 2 As shown, Example 1: Working principle of the annular flame strip (A):

[0046] The head of the annular flame strip (A) is embedded in the limiting hole of the upper limit plate of the fixed frame, and the tail is fixed by the limiting top post on the inner side of the limiting frame, so that the annular electrode of the flame strip is aligned with the electrode spring contact on the fixed plate. After the limiting frame is closed, the wing bolt is tightened. The limiting frame is pressed and pushes the limiting ring and the limiting plate to press together to form an annular sealed space. At the same time, the electrode spring contact elastically presses the annular electrode within the compression stroke to ensure reliable electrical connection. After the flame strip is ignited, the combustion smoke is confined in the sealed cavity formed by the limiting ring and the limiting plate. The axial constraint of the limiting top post prevents the flame strip from moving backward and damaging the sealing interface.

[0047] like Figure 3 As shown, Example 2: Working principle of straight ignition flame strip (B):

[0048] The operator inserts the straight ignition strip (B) into the ceramic tube of the flue gas furnace channel. The lead electrode of the strip passes through the limiting groove set in the inner circumference of the limiting ring. After closing the limiting frame, the operator rotates the wing bolt of the fastening device to lock it into the slot of the limiting frame. During the tightening process, the wing bolt generates axial pressure, pushing the limiting frame to fit tightly against the fixed frame. At this time, the limiting ring and the limiting plate on the fixed frame are pressed together to form a rigid sealing interface. The limiting top column presses against the head of the strip, further enhancing the axial seal. After the lead electrode is connected to an external ignition power source to ignite the strip, the high-temperature smoke generated by combustion is blocked by the sealed space formed by the limiting ring and the limiting plate. When the flange expands due to heat, the constraint of the limiting groove still maintains the integrity of the seal, fundamentally blocking the backflow path of the smoke.

[0049] This utility model achieves the core effect of blocking the backflow of smoke from flame burning by forming a rigid sealing interface through the cooperation of a detachable limiting plate and a limiting ring, combined with the axial pressure locking of the butterfly bolt.

[0050] By precisely engaging the lead wire of the straight flame strip with the limiting groove and fixing the head of the annular ignition flame strip or the straight ignition flame strip with the limiting hole, a universal effect compatible with four different sizes of flame strips (diameter 45-60mm / length 35-70cm) is achieved.

[0051] By adapting the elastic compression stroke of the electrode spring contacts to the contact lead electrode or the ring electrode, a single structure can be integrated to accommodate two types of ignition methods.

[0052] By symmetrically distributing the limiting top posts to tighten the tail of the flame strip, a stable effect is achieved to counteract the recoil force after combustion and maintain the integrity of the seal.

[0053] The quick-opening and closing design of the hinge and wing bolts enables efficient replacement of flame strips in the field.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flue gas furnace channel structure for preventing backflow of smoke, comprising a fixing frame (1) for fixing the ceramic tube of the flue gas furnace channel and a limiting frame (2) hinged to one side of the fixing frame (1) via a pivot hinge (5), characterized in that: Also includes: Fastening device (4): Installed on the end face of the fixed frame (1) near the limiting frame (2) for locking the limiting frame (2) and the fixed frame (1). Limiting ring (3): It is fixed to the end face of the limiting frame (2) near the fixed frame (1), and its inner circumference is provided with at least two limiting grooves (9) for positioning; At least two limiting top posts (6): fixed to the end face of the limiting frame (2) near the fixed frame (1) and located inside the limiting ring (3), used to axially tighten the flame strip; Fixing plate (7): It is detachably installed on the end face of the limiting frame (2) near the fixing frame (1) and located inside the limiting ring (3); At least two electrode spring contacts (8): mounted on the fixed plate (7) and extending through the surface of the limiting frame (2), for contacting the annular electrode of the annular flame strip (A); Limiting plate (10): It is detachably installed on the fixed frame (1) and has a limiting hole (11) for fixing the annular ignition strip (A) or the straight ignition strip (B). The limiting ring (3) and the limiting plate (10) cooperate to form a relatively sealed space to prevent the backflow of smoke when the flame is burning; Electrode spring contact (8).

2. The flue gas furnace channel structure for preventing smoke backflow according to claim 1, characterized in that: The fastening device (4) includes a hinge shaft (41), two perforated bases (42), and a wing bolt (43). Two perforated bases (42) are fixed to the end face of the fixed frame (1) near the limiting frame (2); The hinge shaft (41) is rotatably connected between two perforated bases (42); The wing bolt (43) is fixed to the hinge shaft (41); The limiting frame (2) is provided with a slot (44), and the butterfly bolt (43) is engaged and locked with the slot (44).

3. The flue gas furnace channel structure for preventing backflow of smoke according to claim 1, characterized in that: The four corners of the limiting plate (10) are rounded.

4. The flue gas furnace channel structure for preventing smoke backflow according to claim 1, characterized in that: The limiting top posts (6) are symmetrically distributed above, below, or to the left and right of the fixing plate (7).

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