A new type of self-cleaning spiral cathode wire for dust collector
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2026-08-11
AI Technical Summary
[0006]本实用新型的目的就是解决现有技术中的问题，提出一种除尘器用自清灰新型螺旋阴极线，能够解决现有阴极线固定有芒刺、针刺，在长时间使用后，落在其表面的灰尘结块覆盖放电端，导致阴极线放电失效的问题，提高ESP的运行稳定性和除尘效果
[0014]本实用新型的有益效果：本实用新型通过将螺旋放电端沿着阴极线棒的长度方向依次间隔设置，螺旋放电端包括本体，本体的中间通过绕制构成有纵向设置的中间螺旋部，本体的两端均通过绕制构成有横向设置的螺旋端部，本体的两个终端均为球面过度结构，在振打清灰过程中，螺旋放电端能产生足够的振动，实现有效清灰，当阴极线主体实施振动清灰时，通过阴极振打产生的振打加速度，对螺旋放电端的螺旋端部产生瞬时蓄能，引起螺旋端部自身产生抖动，从而使落在螺旋端部上的灰掉落；中间存在阴极线棒，整体受力均匀，在高电压下不易发生断线问题，与现有技术相比，能够解决现有阴极线固定有芒刺、针刺，在长时间使用后，落在其表面的灰尘结块覆盖放电端，导致阴极线放电失效的问题，提高ESP的运行稳定性和除尘效果。
Smart Images
Figure CN224614014U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of flue gas pollutant treatment and electrostatic precipitators, and in particular to the technical field of a novel self-cleaning spiral cathode wire for dust collectors. Background Technology
[0002] At present, the cathode wires widely used in dust removal equipment mainly include barbed wire, needled wire and spiral wire. These wires are usually made of two semi-circular tubes with barbs and needles through integral rolling or welding processes. They are mainly made of wear-resistant metal materials to prevent the tips from being worn by dust.
[0003] The cathode wire plays a crucial role inside the electrostatic precipitator. It is connected to a high-voltage DC power supply and generates a large number of negative charges through the tip discharge effect of barbs or needles. These negative charges cause the dust particles inside the electrostatic precipitator to be adsorbed onto the anode plate, thereby achieving the effect of purifying the flue gas.
[0004] However, prolonged operation of the cathode wire in an energized environment will cause dust to accumulate on the cathode wire body and the barbs and needles. Over time, this dust will clump together, affecting the tip discharge. Although there is cathode rapping, the clumps of dust are difficult to remove. Therefore, the dust needs to be cleaned regularly by personnel using tools.
[0005] Stress concentration at the end connection of the spiral wire, wear and corrosion from flue gas, and tension generated during installation can easily cause wire breakage, seriously affecting the stable operation and dust removal effect of the ESP. Summary of the Invention
[0006] The purpose of this invention is to solve the problems in the prior art by proposing a novel self-cleaning spiral cathode wire for dust collectors. This invention can solve the problem that existing cathode wires have fixed barbs or needles, and after long-term use, dust clumps on their surface cover the discharge end, causing the cathode wire to fail to discharge. This invention improves the operational stability and dust removal effect of the ESP.
[0007] To achieve the above objectives, this utility model proposes a novel self-cleaning spiral cathode wire for dust collectors, comprising a cathode wire rod and several spiral discharge ends. The spiral discharge ends are arranged sequentially at intervals along the length of the cathode wire rod. Each spiral discharge end includes a body, the middle of which is formed by winding to form a longitudinally arranged central spiral portion. Both ends of the body are formed by winding to form transversely arranged spiral ends. Both ends of the body are spherical transition structures.
[0008] Preferably, the body is made of round steel or steel pipe.
[0009] Preferably, the body is made of round steel or steel pipe with a diameter of 1~5mm.
[0010] Preferably, the number of spiral turns in the intermediate spiral section is greater than one.
[0011] Preferably, the number of spiral turns at the spiral end is 2 to 6, and the pitch is 10 to 60 mm.
[0012] Preferably, the cathode wire is made of steel pipe, and the outer diameter of the cathode wire is 6~12mm.
[0013] Preferably, the intermediate spiral section is fixed to the cathode wire rod by its own pre-tightening force, and an additional welding connection is used for auxiliary reinforcement and fixation.
[0014] The beneficial effects of this utility model are as follows: By sequentially arranging the spiral discharge ends along the length of the cathode wire, the spiral discharge end includes a body. The middle of the body is formed by winding to form a longitudinally arranged central spiral section, and both ends of the body are formed by winding to form transversely arranged spiral ends. Both ends of the body are spherical transition structures. During the vibration cleaning process, the spiral discharge end can generate sufficient vibration to achieve effective cleaning. When the cathode wire body is vibrated for cleaning, the vibration acceleration generated by the cathode vibration generates instantaneous energy storage on the spiral ends of the spiral discharge end, causing the spiral ends to shake, thereby causing the dust falling on the spiral ends to fall off. The presence of the cathode wire in the middle ensures uniform force distribution, making it less prone to wire breakage under high voltage. Compared with the prior art, this invention solves the problem that existing cathode wires have fixed barbs or needles, and after long-term use, dust clumps on their surface, covering the discharge end and causing cathode wire discharge failure. This improves the operational stability and dust removal effect of the ESP.
[0015] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a novel self-cleaning spiral cathode wire for a dust collector according to this utility model; Figure 2 yes Figure 1 Enlarged view of A in the middle; Figure 3 This is an installation view of the overall frame of the cathode wire; Figure 4 This is a schematic diagram of the computer simulation implementation case one; Figure 5 This is a schematic diagram of the second case study of computer simulation implementation.
[0017] In the figure: 1-Cathode wire, 2-Helical discharge end, 3-Vibration generator, 21-Body, 22-Intermediate spiral section, 23-Helical end, 24-Terminal. Detailed Implementation
[0018] Example 1 See Figure 1 , Figure 2 and Figure 3 This utility model discloses a novel self-cleaning spiral cathode wire for dust collectors, comprising a cathode rod 1 and several spiral discharge ends 2. The spiral discharge ends 2 are arranged sequentially at intervals along the length of the cathode rod 1. Each spiral discharge end 2 includes a body 21, with a longitudinally arranged intermediate spiral portion 22 formed by winding in the middle of the body 21. Both ends of the body 21 are transversely arranged spiral ends 23 formed by winding. The two ends 24 of the body 21 are both spherical transition structures. The body 21 is made of round steel or steel pipe with a diameter of 1~5mm. The number of spiral turns of the intermediate spiral portion 22 is greater than one turn, and the number of spiral turns of the spiral ends 23 is 2~6 turns with a pitch of 10~60mm. The cathode rod 1 is made of steel pipe with an outer diameter of 6~12mm. The intermediate spiral portion 22 is fixed to the cathode rod 1 by its own pre-tightening force and further reinforced by welding.
[0019] The spiral discharge ends 2 are arranged on the cathode wire rod 1 according to a certain size. The inner diameter of the middle spiral part 22 matches the outer diameter of the cathode wire rod 1, and there is a certain self-tightening force. It can also be fixed by welding to ensure that it cannot rotate freely on the cathode wire rod 1.
[0020] When the cathode wire body is vibrated for cleaning, when the cathode frame is struck by the cathode impact device and generates vibration acceleration, the spiral part of the spiral discharge end 2 can store energy instantaneously. This causes the spiral discharge end to undergo compression or stretching deformation, accumulating sufficient energy. The energy stored in the spiral ring is released, which in turn causes the spiral discharge end 2 to vibrate itself. This vibration causes the dust attached to the surface to fall off due to the vibration, thereby ensuring the discharge performance of the cathode wire.
[0021] Depending on the differences in electric field discharge requirements, the length of the spiral end 23 can be appropriately adjusted. The discharge effect is mainly controlled by changing the pitch and number of turns of the spiral ring to ensure the suitability of the charge density.
[0022] Depending on the required discharge quantity, the overall number of layers can be adjusted by changing the number of cathode wires.
[0023] This invention eliminates the need for wires to connect the barbs to the cathode wire body, eliminates the need for re-splicing of the cathode wire body, and removes the barbs from the point of contact.
[0024] The cathode wire of this invention does not require water cleaning, the body structure is simpler to manufacture, and the timely dust fall-off makes it less likely to clump at the discharge end.
[0025] Under high voltage conditions, it can generate a uniform current and maintain discharge performance.
[0026] The specifications of the cathode rod can be adjusted according to the actual required length of the cathode wire to maintain overall strength.
[0027] It eliminates the electric field failure caused by dust accumulation at the discharge end, and is applicable to both new and upgraded electrostatic precipitators, thereby improving the operational stability of the dust collector.
[0028] A smooth spherical transition avoids concentrated tip discharge at the ends.
[0029] The cathode rod 1 is made of steel pipe with an outer diameter of 6~12mm. Compared with round steel, it is lighter in weight and the steel pipe specifications can be adjusted according to the length of the cathode wire to meet the strength requirements.
[0030] Example 2 The present invention will be further described in conjunction with the accompanying drawings and embodiments: while keeping the structure of the first embodiment unchanged, Figure 3 This is an installation view of the overall frame of the cathode wire. The vibration generator 3 is installed at the bottom of the outer frame, and is separated by insulating porcelain to prevent the vibration generator from being damaged by the high voltage of the cathode.
[0031] To meet specific charge density requirements, the structure of the spiral discharge end must be precisely adjusted. By using specialized software for calculation, the vibration frequency of the spiral discharge end 2 itself can be accurately determined. Subsequently, the vibration generator needs to be adjusted to match the calculated frequency. The vibration generator operates intermittently (the interval can be adjusted according to the actual situation) to induce resonance in the spiral discharge end 2. This resonance will cause the spiral end 23 of the spiral discharge end 2 to produce a strong vibration effect. Due to this vibration, the dust particles attached to the surface of the spiral discharge end will be effectively removed by the vibration, thereby ensuring that the cathode wire can maintain good discharge performance and thus maintain the stable operation of the entire system.
[0032] Computer simulation implementation case 1: The cathode wire rod uses a Φ8×1 steel pipe, and the spiral discharge end is made of carbon steel with a specification of Φ2 round steel. The middle spiral has a mean diameter of 10mm, and the pitch of the first two turns of the end spiral transitions from 2.5mm to 6mm, while the pitch of the last two turns is 6mm, for a total of 4 turns. The turning radius is 5mm. Through software simulation, the calculated vibration frequency is 565.3Hz, the amplitude is 46mm, and the vibration mode is synthetic vibration, such as... Figure 4 As shown.
[0033] Computer simulation implementation case 2: The cathode wire rod uses a Φ8×1 steel pipe, and the spiral discharge end is made of carbon steel with specifications: Φ2*0.5 steel pipe, a middle spiral diameter of 10mm, and the pitch of the first two turns of the end spiral transitions from 2.5mm to 6mm, while the pitch of the last two turns is 6mm, for a total of 4 turns; the turning radius is 5mm. Through software simulation, the calculated vibration frequency is 619.94Hz, the amplitude is 53mm, and the vibration mode is synthetic vibration, such as... Figure 5 As shown.
[0034] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.
Claims
1. A novel self-cleaning spiral cathode wire for dust collectors, characterized in that: It includes a cathode wire (1) and several spiral discharge ends (2). The spiral discharge ends (2) are arranged at intervals along the length of the cathode wire (1). The spiral discharge end (2) includes a body (21). The middle of the body (21) is formed by winding to form a longitudinally arranged middle spiral part (22). Both ends of the body (21) are formed by winding to form a transversely arranged spiral end (23). The two ends (24) of the body (21) are both spherical transition structures.
2. The novel self-cleaning spiral cathode wire for dust collectors as described in claim 1, characterized in that: The main body (21) is made of round steel or steel pipe.
3. The novel self-cleaning spiral cathode wire for dust collectors as described in claim 2, characterized in that: The main body (21) is made of round steel or steel pipe with a diameter of 1~5mm.
4. The novel self-cleaning spiral cathode wire for dust collectors as described in claim 1, characterized in that: The number of spiral turns in the intermediate spiral section (22) is greater than one.
5. The novel self-cleaning spiral cathode wire for dust collectors as described in claim 1, characterized in that: The spiral end (23) has 2 to 6 spiral turns and a pitch of 10 to 60 mm.
6. The novel self-cleaning spiral cathode wire for dust collectors as described in claim 1, characterized in that: The cathode rod (1) is made of steel pipe, and the outer diameter of the cathode rod (1) is 6~12mm.
7. A novel self-cleaning spiral cathode wire for dust collectors as described in any one of claims 1 to 6, characterized in that: The intermediate spiral part (22) is fixed to the cathode wire rod (1) by its own pre-tightening force, and is further reinforced by welding.