A light transmission method filter bag detection device

Abstract

A light transmission method filter bag detection device includes an inner insertion column and an outer sleeve. Among them, the inner insertion column includes an inner column body and an inner column cavity, and the outer sleeve includes an outer cylinder body and an outer cylinder cavity. The inner column body is inserted and fitted with the outer cylinder cavity. A plurality of inner cable jacks and outer cable jacks are respectively arranged inside the inner column body and the outer cylinder body. The inner cable jacks and the outer cable jacks are each arranged in layers, and each layer is arranged in a ring shape. The inner end of the first optical cable is flush with the inner insertion inner port in the inner cable jack, and the outer end of the first optical cable is flush with the inner insertion outer port or extends to the outside of the inner insertion outer port. The inner end of the second optical cable is located inside the outer jack channel, and the outer end of the second optical cable passes through the outer insertion outer port and is connected to an optical signal processor located outside the outer sleeve. Moreover, the outer cable jacks and the inner cable jacks correspond one by one, and the first optical cables and the second optical cables correspond one by one. This design can not only specifically detect the damage condition of old filter bags, but also has a high accuracy.

Description

Technical Field

[0001] The present invention relates to a detection technology for used filter bags, belonging to the field of filter bag detection, and particularly relates to a filter bag detection device using the light transmission method. Background Art

[0002] With the rapid improvement of industrial level, air pollution has been aggravated. Industrial dust from industries such as coal-fired power plants and waste incineration is one of the important factors in the formation of atmospheric particulate matter and haze. Therefore, controlling industrial dust emissions is the main means to solve haze weather and improve air quality. In practical engineering applications, bag filters can filter waste gas, with high dust removal efficiency and good dust cleaning effect, and are one of the main means to effectively control industrial dust emissions.

[0003] At present, as the core component of the bag filter, the usage state of the filter bag directly affects the dust removal efficiency and service life of the dust collector. For filter bags used to filter high-temperature waste gas, the materials generally used include Meta-aramid fiber, polyphenylene sulfide fiber, polyimide fiber, polytetrafluoroethylene fiber or glass fiber. Among them, Meta-aramid fiber has good high-temperature resistance and strong acid and alkali resistance, but the problem of fiber hydrolysis needs to be considered under high-temperature conditions; polyphenylene sulfide fiber has good heat resistance and excellent acid and alkali resistance, but its toughness is poor and there is an oxidation problem under high-temperature conditions; polyimide fiber has high breaking strength, excellent heat resistance, flame retardancy and acid resistance, but alkali has a great corrosive effect on this fiber, and hydrolysis is likely to occur under high-temperature and high-humidity conditions; polytetrafluoroethylene fiber is high-temperature resistant, acid and alkali resistant, and not afraid of oxidation, but its price is high and it cannot be used on a large scale; glass fiber is high-temperature resistant and has a low price, but its strength and folding resistance are not high, which limits the filtration air velocity. Comparatively speaking, aramid fiber has excellent properties such as ultra-high strength, high-temperature resistance, acid and alkali resistance, and has a long life cycle. Therefore, at present, the filter bag is mainly an aramid needle felt filter bag.

[0004] Although the aramid needle felt filter bag has excellent performance, in actual use, the filter bag still breaks, and the reasons include:

[0005] Firstly, the high-temperature gas discharged in industrial production is too high, exceeding the limit temperature that the filter bag itself can bear, resulting in the filter bag being damaged and affecting the filtration performance;

[0006] Secondly, the flue gas discharged contains acidic and alkaline substances, which will cause a certain degree of corrosion to the filter bag. At the moment when the flue gas is just discharged, high-temperature water vapor contacts the surface of the filter bag to produce a condensation phenomenon, corroding the filter bag. At the same time, the dust in the flue gas combines with the water on the filter bag to produce clots that cannot be removed, thereby affecting the filtration effect;

[0007] Thirdly, the way of cleaning ash can also cause damage to the filter bag. During the working process of the filter bag, it is necessary to use a spray gun to blow air and clean the filter bag every once in a while. Due to the frequent cleaning times, the excessive contact between the high-speed compressed gas or liquid and the filter bag body accelerates the wear of the fabric fibers of the filter bag, resulting in damage to the filter bag body.

[0008] Once the filter bag is damaged, it must be repaired or replaced in time. Otherwise, the filtering performance of the filter bag will be greatly reduced, and the dust-containing flue gas will be discharged into the atmosphere, resulting in excessive emissions and air pollution. At the same time, the high-temperature gas discharged from the filter bag will become a safety hazard and cause additional losses to the factory.

[0009] Therefore, the filter bag needs to be detected after being used for three to four years for timely replacement. At this time, considering the use cost, if the used old filter bag can be accurately detected to clarify the damage situation and the damaged parts, so as to replace the filter bag with serious damage and recycle and repair the filter bag with less damage degree, the utilization efficiency of the filter bag can be effectively improved and the factory cost can be saved.

[0010] However, for the existing filter bag detection, it is mostly for the quality detection of the newly put and unused filter bags, and there is a lack of specialized damage detection for the characteristics of the old filter bags.

[0011] Disclosing the information of this background technology section is only intended to increase the understanding of the overall background of the present application, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0012] The purpose of the present invention is to overcome the defects and problems in the prior art that the damage situation of the old filter bag cannot be specially detected, and to provide a light transmission method filter bag detection device that can specially detect the damage situation of the old filter bag.

[0013] To achieve the above purpose, the technical solution of the present invention is: a light transmission method filter bag detection device, the light transmission method filter bag detection device includes an inner insertion column and an outer sleeve. The inner insertion column includes an inner column body and an inner column cavity opened therein. A column top opening is provided at the top of the inner column cavity. The outer sleeve includes an outer cylinder body and an outer cylinder cavity opened therein. A cylinder top opening is provided at the top of the outer cylinder cavity, and the inner column body is inserted and matched with the outer cylinder cavity;

[0014] A plurality of inner cable jacks are provided inside the inner cylinder. All the inner cable jacks are arranged in layers and presented as multiple detection inner layers from top to bottom. Each detection inner layer is annular, and the inner cable jacks within each detection inner layer are evenly distributed along the same circumference. The inner cable jack includes an inner insertion inner port, an inner jacking channel, and an inner insertion outer port that are connected in sequence. The inner insertion inner port is flush with the inner wall of the inner cylinder, and the inner insertion outer port is flush with the outer wall of the inner cylinder. A first optical cable is correspondingly inserted into each inner cable jack. The inner end of the first optical cable is flush with the inner insertion inner port, and the outer end of the first optical cable is flush with the inner insertion outer port or extends to the outside of the inner insertion outer port.

[0015] A plurality of outer cable jacks are provided inside the outer cylinder. All the outer cable jacks are arranged in layers and presented as multiple detection outer layers from top to bottom. Each detection outer layer is annular, and the outer cable jacks within each detection outer layer are evenly distributed along the same circumference. The outer cable jack includes an outer insertion inner port, an outer jacking channel, and an outer insertion outer port that are connected in sequence. The outer insertion inner port is flush with the inner wall of the outer cylinder, and the outer insertion outer port is flush with the outer wall of the outer cylinder. A second optical cable is correspondingly inserted into each outer cable jack. The inner end of the second optical cable is located inside the outer jacking channel, and the outer end of the second optical cable passes through the outer insertion outer port and is connected to an optical signal processor located outside the outer sleeve. Moreover, the outer cable jacks and the inner cable jacks are in one-to-one correspondence, and the first optical cables and the second optical cables are in one-to-one correspondence.

[0016] The bottom of the outer cylinder is an open structure or an outer chassis, and a plurality of through outer through-holes are provided on the outer chassis.

[0017] An outer boss is sleeved outside the inner insertion outer port, and an inner concave hole is provided inside the outer insertion inner port. The inner concave hole and the outer boss are inserted and matched in one-to-one correspondence.

[0018] A through-hole coaxial with the inner jacking channel is provided inside the outer boss, and the outer end of the first optical cable passes through the inner insertion outer port and extends to the inside of the through-hole.

[0019] The cross-section of the outer boss is an isosceles trapezoid, and the diameter of the outer boss at the end far from the inner cylinder is smaller than the diameter of the outer boss at the end close to the inner cylinder.

[0020] The first optical cable and its corresponding second optical cable are arranged opposite to each other, and an optical cable gap is formed between the two optical cables.

[0021] The bottom of the inner insertion column is an open structure or an inner chassis, and a plurality of through inner through-holes are provided on the inner chassis.

[0022] The optical signal processor is arranged inside a detection box, and the detection box is sleeved outside the corresponding outer insertion outer port.

[0023] In a single detection inner layer, inner air holes communicating with the inner column cavity are provided between adjacent inner cable jacks, and all the inner air holes in the same detection inner layer are uniformly arranged along the same circumference;

[0024] In a single detection outer layer, outer air holes communicating with the outer cylinder cavity are provided between adjacent outer cable jacks, and all the outer air holes in the same detection outer layer are uniformly arranged along the same circumference;

[0025] The inner air holes and the outer air holes are in one-to-one correspondence, and the outer orifice of the inner air hole is aligned and communicated with the inner orifice of its corresponding outer air hole.

[0026] In two adjacent detection inner layers, the inner air holes in the upper detection inner layer and the inner air holes in the lower detection inner layer are staggered from each other, and the staggered position corresponds to an inner cable jack up and down;

[0027] In two adjacent detection outer layers, the outer air holes in the upper detection outer layer and the outer air holes in the lower detection outer layer are staggered from each other, and the staggered position corresponds to an outer cable jack up and down.

[0028] Both the A optical cable and the B optical cable are communication-grade plastic optical cables.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. In a light transmission method filter bag detection device of the present invention, it includes an inner insertion column, an outer sleeve, multiple first optical cables and multiple second optical cables. Among them, the inner insertion column includes an inner column body and an inner column cavity, and the outer sleeve includes an outer cylinder body and an outer cylinder cavity. The inner column body is inserted and fitted with the outer cylinder cavity; a plurality of inner cable jacks are arranged inside the inner column body. All the inner cable jacks are arranged in layers, presenting multiple detection inner layers from top to bottom. Each detection inner layer is annular, and the inner cable jacks within each detection inner layer are evenly distributed along the same circumference; a plurality of outer cable jacks are arranged inside the outer cylinder body. All the outer cable jacks are arranged in layers, presenting multiple detection outer layers from top to bottom. Each detection outer layer is annular, and the outer cable jacks within each detection outer layer are evenly distributed along the same circumference; during application, first lay the first optical cables and the second optical cables, that is, insert the first optical cables into the inner cable jacks and insert the second optical cables into the outer cable jacks. Among them, the inner end of the first optical cable is flush with the inner insertion opening, the outer end of the first optical cable is flush with the outer insertion opening or extends to the outside of the outer insertion opening. The inner end of the second optical cable is located inside the outer jack channel, and the outer end of the second optical cable passes through the outer insertion opening and is connected to an optical signal processor located outside the outer sleeve. Then, put the old filter bag to be detected on the outside of the inner insertion column, and then insert the inner insertion column and the old filter bag together into the inside of the outer sleeve. After insertion, the outer cable jacks and the inner cable jacks correspond one by one. At the same time, the first optical cables and the second optical cables correspond one by one, and the corresponding positions are directly opposite to each other. Then, put a light source into the inner column cavity. The light emitted by this light source first enters one end of the first optical cable, then exits from the other end of the first optical cable, passes through the old filter bag sleeved outside it, and then enters one end of the corresponding second optical cable. Then, it is received and analyzed by the optical signal processor connected to the other end of the second optical cable. The strength of the optical signal between the first optical cable and the second optical cable is affected by the light transmittance of the part of the old filter bag sandwiched between the two optical cables. And the light transmittance is related to the degree of damage and blockage of the old filter bag. Therefore, after obtaining the light intensity signals of each part of the old filter bag through the optical signal processor and comparing them with each other, the degree of damage or blockage of each part can be obtained, and the accuracy is relatively high. In addition, when comparing the strength of the optical signals, not only compare the strength of each part within the same layer, that is, within the detection inner layer, but also can compare the strength of the optical signals between layers to further improve the detection accuracy. Therefore, the present invention can not only specifically detect the damage condition of the old filter bag, but also has a relatively high accuracy.

[0031] 2. In a light transmission method filter bag detection device of the present invention, the bottom of the outer cylinder is an open structure or an outer chassis, and a plurality of through outer through holes are provided on the outer chassis. During application, when the inner insertion post and the old filter bag are inserted into the inner part of the outer sleeve together, the bottom of the outer cylinder communicates with the external environment, so as to facilitate the handling of the air pressure change caused by the insertion, make the insertion smoother, avoid interfering with the outer periphery of the old filter bag during the insertion process, ensure the flatness of the outer periphery of the old filter bag and the alignment of the first optical cable and the second optical cable after the insertion, and further ensure the detection of the final light signal strength, and finally ensure the detection accuracy. Especially when the bottom of the inner insertion post is an open structure or an inner chassis, and a plurality of through inner through holes are provided on the inner chassis, the effect is better. Therefore, the operation of the present invention has strong fluency and high detection accuracy.

[0032] 3. In a light transmission method filter bag detection device of the present invention, an outer boss is sleeved outside the outer insertion opening, and an inner concave hole is provided inside the outer insertion inner opening, and the inner concave hole is inserted and matched with the outer boss in a one-to-one correspondence; a through hole inside the boss is provided in the outer boss, and the through hole inside the boss communicates with the inner insertion hole in a coaxial manner. The outer end of the first optical cable passes through the outer insertion opening and extends to the inside of the through hole inside the boss. During application, after the inner insertion post and the old filter bag are inserted into the inner part of the outer sleeve together, the outer boss will be stuck in the inner concave hole, making the alignment of the first optical cable and the second optical cable stronger and more conducive to the transmission of the light signal, thereby improving the detection effect of the damage condition. Therefore, the detection effect of the present invention is strong.

[0033] 4. In a light transmission method filter bag detection device of the present invention, preferably, in a single detection inner layer, inner air holes communicating with the inner column cavity are provided between adjacent inner cable insertion holes, and all the inner air holes in the same detection inner layer are uniformly arranged along the same circumference; in a single detection outer layer, outer air holes communicating with the outer cylinder cavity are provided between adjacent outer cable insertion holes, and all the outer air holes in the same detection outer layer are uniformly arranged along the same circumference; the inner air holes and the outer air holes are in one-to-one correspondence, and the outer hole openings of the inner air holes are aligned and communicated with the inner hole openings of the corresponding outer air holes. During application, after the first detection of the filter bag damage by using the light signal transmission between the light source, the first optical cable and the second optical cable, first take out the light source from the inner column cavity, and then send air into the inner column cavity (at this time, the top and bottom of the inner column cavity need to be sealed and airtight). The air sent in will be ejected from the inner air holes to the outer air holes (the first optical cable and the second optical cable are fixed in their respective corresponding inner cable insertion holes and outer cable insertion holes and will not be affected by the flowing gas, such as bonding). Then, by measuring the gas flow rate per unit time in each outer air hole, the damage or blockage condition of the old filter bag part between the inner air holes and the outer air holes can be obtained. In addition, the damage condition measured by the gas flow rate and the damage condition measured by the light signal strength can be combined and observed together to obtain a more accurate detection result. Therefore, the present invention can detect the damage or blockage condition of the filter bag through the gas flow rate. Brief Description of the Drawings

[0034] Figure 1 is a schematic three - dimensional structure diagram of the present invention.

[0035] Figure 2 is Figure 1 a transverse sectional view of

[0036] Figure 3 is Figure 1 a longitudinal sectional view of

[0037] Figure 4 is a schematic three - dimensional structure diagram of the outer sleeve in the present invention.

[0038] Figure 5 is a transverse sectional view of the outer sleeve in the present invention.

[0039] Figure 6 is a longitudinal sectional view of the outer sleeve in the present invention.

[0040] Figure 7 is a schematic three - dimensional structure diagram of the inner insertion column in the present invention.

[0041] Figure 8 is a transverse sectional view of the inner insertion column in the present invention.

[0042] Figure 9 is a longitudinal sectional view of the inner insertion column in the present invention.

[0043] Figure 10 is a schematic diagram of the connection between the intake pipe and the pipe outer ring in the present invention.

[0044] In the figure: inner insertion column 1, inner column body 11, inner column cavity 12, column top opening 13, inner chassis 14, inner through - hole 15, outer sleeve 2, outer cylinder body 21, outer cylinder cavity 22, cylinder top opening 23, outer chassis 24, outer through - hole 25, inner cable jack 3, detection inner layer 30, inner insertion inner opening 31, inner jacking channel 32, inner insertion outer opening 33, armor optical cable 4, outer convex platform 41, platform inner hole channel 42, outer cable jack 5, detection outer layer 50, outer insertion inner opening 51, outer jacking channel 52, outer insertion outer opening 53, ethyl optical cable 6, inner concave hole 61, optical cable gap 62, optical signal processor 7, detection box 71, inner air hole 8, outer hole opening 81, outer air hole 9, inner hole opening 91, insertion groove 10, intake pipe 16, pipe outer ring 17. Detailed Description of the Invention

[0045] The present invention will be further described in detail below in conjunction with the description of the drawings and the detailed description of the invention.

[0046] See Figure 1 — Figure 10, A light transmission method filter bag detection device, the light transmission method filter bag detection device includes an inner insertion column 1 and an outer sleeve 2. The inner insertion column 1 includes an inner column body 11 and an inner column cavity 12 opened inside it. A column top opening 13 is provided at the top of the inner column cavity 12. The outer sleeve 2 includes an outer cylinder body 21 and an outer cylinder cavity 22 opened inside it. A cylinder top opening 23 is provided at the top of the outer cylinder cavity 22, and the inner column body 11 is inserted and fitted with the outer cylinder cavity 22;

[0047] A plurality of inner cable jacks 3 are provided inside the inner column body 11. All the inner cable jacks 3 are arranged in layers and are presented as a plurality of detection inner layers 30 from top to bottom. Each detection inner layer 30 is annular, and the inner cable jacks 3 inside each detection inner layer 30 are evenly distributed along the same circumference. The inner cable jack 3 includes an inner insertion inner port 31, an inner jacking channel 32, and an inner insertion outer port 33 connected in sequence. The inner insertion inner port 31 is flush with the inner wall of the inner column body 11, and the inner insertion outer port 33 is flush with the outer wall of the inner column body 11. A first optical cable 4 is correspondingly inserted into each inner cable jack 3. The inner end of the first optical cable 4 is flush with the inner insertion inner port 31, and the outer end of the first optical cable 4 is flush with the inner insertion outer port 33 or extends to the outside of the inner insertion outer port 33;

[0048] A plurality of outer cable jacks 5 are provided inside the outer cylinder body 21. All the outer cable jacks 5 are arranged in layers and are presented as a plurality of detection outer layers 50 from top to bottom. Each detection outer layer 50 is annular, and the outer cable jacks 5 inside each detection outer layer 50 are evenly distributed along the same circumference. The outer cable jack 5 includes an outer insertion inner port 51, an outer jacking channel 52, and an outer insertion outer port 53 connected in sequence. The outer insertion inner port 51 is flush with the inner wall of the outer cylinder body 21, and the outer insertion outer port 53 is flush with the outer wall of the outer cylinder body 21. A second optical cable 6 is correspondingly inserted into each outer cable jack 5. The inner end of the second optical cable 6 is located inside the outer jacking channel 52, and the outer end of the second optical cable 6 passes through the outer insertion outer port 53 and is connected to an optical signal processor 7 located outside the outer sleeve 2. And the outer cable jack 5 corresponds to the inner cable jack 3 one by one, and the first optical cable 4 corresponds to the second optical cable 6 one by one.

[0049] The bottom of the outer cylinder body 21 is an open structure or an outer chassis 24, and a plurality of through outer through holes 25 are opened on the outer chassis 24.

[0050] An outer convex platform 41 is sleeved outside the inner insertion outer port 33. An inner concave hole 61 is opened inside the outer insertion inner port 51, and the inner concave hole 61 is inserted and fitted with the outer convex platform 41 in a one-to-one correspondence;

[0051] A table inner hole channel 42 coaxially communicating with the inner jacking channel 32 is opened inside the outer convex platform 41. The outer end of the first optical cable 4 passes through the inner insertion outer port 33 and extends into the interior of the table inner hole channel 42.

[0052] The cross-section of the outer convex platform 41 is an isosceles trapezoid, and the diameter of the outer convex platform 41 at one end far from the inner cylinder 11 is smaller than the diameter of the outer convex platform 41 at one end close to the inner cylinder 11.

[0053] The first optical cable 4 and its corresponding second optical cable 6 are arranged opposite to each other, and an optical cable gap 62 is formed between the two optical cables.

[0054] The bottom of the inner insertion post 1 is an open structure or an inner bottom plate 14, and a plurality of through inner through holes 15 are formed in the inner bottom plate 14.

[0055] The optical signal processor 7 is arranged in the detection box 71, and the detection box 71 is sleeved outside the corresponding outer insertion outer port 53.

[0056] In a single detection inner layer 30, inner air holes 8 communicating with the inner column cavity 12 are formed between adjacent inner cable jacks 3, and all the inner air holes 8 in the same detection inner layer 30 are uniformly arranged along the same circumference;

[0057] In a single detection outer layer 50, outer air holes 9 communicating with the outer cylinder cavity 22 are formed between adjacent outer cable jacks 5, and all the outer air holes 9 in the same detection outer layer 50 are uniformly arranged along the same circumference;

[0058] The inner air holes 8 and the outer air holes 9 correspond to each other one by one, and the outer hole openings 81 of the inner air holes 8 are aligned and communicated with the inner hole openings 91 of the corresponding outer air holes 9.

[0059] In two adjacent detection inner layers 30, the inner air holes 8 in the upper detection inner layer 30 and the inner air holes 8 in the lower detection inner layer 30 are staggered from each other, and the staggered positions correspond to an inner cable jack 3 up and down;

[0060] In two adjacent detection outer layers 50, the outer air holes 9 in the upper detection outer layer 50 and the outer air holes 9 in the lower detection outer layer 50 are staggered from each other, and the staggered positions correspond to an outer cable jack 5 up and down.

[0061] The first optical cable 4 and the second optical cable 6 are both communication-grade plastic optical cables.

[0062] The principle of the present invention is described as follows:

[0063] When an outer convex platform 41 is sleeved outside the inner insertion outer port 33 and a corresponding inner concave hole 61 is formed inside the inner insertion inner port 51, in order to facilitate the insertion of the inner cylinder 11 into the outer cylinder cavity 22, a recessed insertion groove 10 is formed in the cylinder wall of the outer cylinder body 21 to facilitate the insertion of each outer convex platform 41. The bottom of the insertion groove 10 is communicated with each inner concave hole 61, so as to ensure that after the inner cylinder 11 is inserted downward, the outer convex platform 4 can be inserted and matched with the inner concave hole 61 one by one.

[0064] On this basis, if internal air holes 8 and external air holes 9 are subsequently added for gas flow detection, the top and bottom of the insertion groove 10 need to be sealed to prevent gas leakage.

[0065] Example 1:

[0066] Refer to Figure 1 — Figure 10 , a light transmission method filter bag detection device, the light transmission method filter bag detection device includes an inner insertion column 1 and an outer sleeve 2. The inner insertion column 1 includes an inner column body 11 and an inner column cavity 12 opened therein. A column top opening 13 is provided at the top of the inner column cavity 12. The outer sleeve 2 includes an outer cylinder body 21 and an outer cylinder cavity 22 opened therein. A cylinder top opening 23 is provided at the top of the outer cylinder cavity 22, and the inner column body 11 is inserted and fitted with the outer cylinder cavity 22; a plurality of inner cable insertion holes 3 are provided inside the inner column body 11. All the inner cable insertion holes 3 are arranged in layers and are presented as a plurality of detection inner layers 30 from top to bottom. Each detection inner layer 30 is annular, and the inner cable insertion holes 3 in each detection inner layer 30 are evenly distributed along the same circumference; the inner cable insertion hole 3 includes an inner insertion inner port 31, an inner insertion hole passage 32, and an inner insertion outer port 33 connected in sequence. The inner insertion inner port 31 is flush with the inner wall of the inner column body 11, and the inner insertion outer port 33 is flush with the outer wall of the inner column body 11. A first optical cable 4 is correspondingly inserted into each inner cable insertion hole 3. The inner end of the first optical cable 4 is flush with the inner insertion inner port 31, and the outer end of the first optical cable 4 is flush with the inner insertion outer port 33 or extends to the outside of the inner insertion outer port 33; a plurality of outer cable insertion holes 5 are provided inside the outer cylinder body 21. All the outer cable insertion holes 5 are arranged in layers and are presented as a plurality of detection outer layers 50 from top to bottom. Each detection outer layer 50 is annular, and the outer cable insertion holes 5 in each detection outer layer 50 are evenly distributed along the same circumference; the outer cable insertion hole 5 includes an outer insertion inner port 51, an outer insertion hole passage 52, and an outer insertion outer port 33 connected in sequence. The outer insertion inner port 51 is flush with the inner wall of the outer cylinder body 21, and the outer insertion outer port 33 is flush with the outer wall of the outer cylinder body 21. A second optical cable 6 is correspondingly inserted into each outer cable insertion hole 5. The inner end of the second optical cable 6 is located inside the outer insertion hole passage 52, and the outer end of the second optical cable 6 passes through the outer insertion outer port 33 and is connected to an optical signal processor 7 located outside the outer sleeve 2. Moreover, the outer cable insertion holes 5 and the inner cable insertion holes 3 are in one-to-one correspondence, and the first optical cables 4 and the second optical cables 6 are in one-to-one correspondence.

[0067] During application, first put the used filter bag to be detected on the inner insertion column 1, and then insert the inner insertion column 1 and the used filter bag together into the outer cylinder cavity 22 until the first optical cables 4 and the second optical cables 6 are in one-to-one correspondence. Then, send a light source into the inner column cavity 12, and then detect the strength change of the optical signal transmission between the first optical cables 4 and the second optical cables 6 at each place, and then judge the damage condition or blockage condition of the used filter bag according to the change value.

[0068] Example 2:

[0069] The basic content is the same as that of Embodiment 1, except that:

[0070] Preferably, the bottom of the outer cylinder body 21 is an open structure or an outer chassis 24, and a plurality of through outer through holes 25 are formed in the outer chassis 24. The bottom of the inner insertion column 1 is an open structure or an inner chassis 14, and a plurality of through inner through holes 15 are formed in the inner chassis 14.

[0071] Embodiment 3:

[0072] The basic content is the same as that of Embodiment 1, except that:

[0073] In a single detection inner layer 30, inner air holes 8 communicating with the inner column cavity 12 are formed between adjacent inner cable jacks 3, and all the inner air holes 8 in the same detection inner layer 30 are uniformly arranged along the same circumference; in a single detection outer layer 50, outer air holes 9 communicating with the outer cylinder cavity 22 are formed between adjacent outer cable jacks 5, and all the outer air holes 9 in the same detection outer layer 50 are uniformly arranged along the same circumference; the inner air holes 8 and the outer air holes 9 are in one-to-one correspondence, and the outer hole openings 81 of the inner air holes 8 are aligned and communicated with the inner hole openings 91 of the corresponding outer air holes 9.

[0074] Embodiment 4:

[0075] The basic content is the same as that of Embodiment 3, except that:

[0076] An outer convex platform 41 is sleeved outside the inner insertion outer opening 33, and an inner concave hole 61 is formed inside the outer insertion inner opening 51, and the inner concave hole 61 is inserted and matched with the outer convex platform 41 in a one-to-one manner; a platform inner hole channel 42 coaxial with the inner jack channel 32 is formed in the outer convex platform 41, and the outer end of the first optical cable 4 passes through the inner insertion outer opening 33 and then extends into the interior of the platform inner hole channel 42. An insertion groove 10 is formed in a concave manner on the cylinder wall of the outer cylinder body 21 to facilitate the insertion of each outer convex platform 41.

[0077] During application, after the light source is taken out from the inner column cavity 12, first, the bottom of the inner column cavity 12 and the outer cylinder body 21 is sealed, and then the air inlet pipe 16 is pressed down. The bottom of the air inlet pipe 16 is provided with an outward-expanded pipe outer ring 17. After being pressed down, the pipe outer ring 17 will seal the top of the outer cylinder body 21, mainly sealing the top of the insertion groove 10, and then the air inlet pipe 16 located inside the pipe outer ring 17 sends air into the inner column cavity 12, so as to perform subsequent gas flow detection, and further judge the damage condition or blockage condition of the old filter bag.

[0078] Embodiment 5:

[0079] The basic content is the same as that of Embodiment 1, except that:

[0080] The said optical cable A 4 and optical cable B 6 are both communication-grade plastic optical cables, and the light source is a green light source.

[0081] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modification or change made by those of ordinary skill in the art according to the disclosure of the present invention shall be included in the protection scope recorded in the claims.

Claims

1. A light transmission method filter bag detection device, characterized in that: The light transmission method filter bag detection device includes an inner insertion column (1) and an outer sleeve (2). The inner insertion column (1) includes an inner column body (11) and an inner column cavity (12) opened inside it. A column top opening (13) is provided at the top of the inner column cavity (12). The outer sleeve (2) includes an outer cylinder body (21) and an outer cylinder cavity (22) opened inside it. A cylinder top opening (23) is provided at the top of the outer cylinder cavity (22), and the inner column body (11) is inserted and matched with the outer cylinder cavity (22). A plurality of inner cable jacks (3) are provided inside the inner column body (11). All the inner cable jacks (3) are arranged in layers and are presented as a plurality of detection inner layers (30) from top to bottom. Each detection inner layer (30) is annular, and the inner cable jacks (3) in each detection inner layer (30) are evenly distributed along the same circumference. The inner cable jack (3) includes an inner insertion inner port (31), an inner jacking channel (32), and an inner insertion outer port (33) connected in sequence. The inner insertion inner port (31) is flush with the inner wall of the inner column body (11), and the inner insertion outer port (33) is flush with the outer wall of the inner column body (11). A first optical cable (4) is correspondingly inserted into each inner cable jack (3). The inner end of the first optical cable (4) is flush with the inner insertion inner port (31), and the outer end of the first optical cable (4) is flush with the inner insertion outer port (33) or extends to the outside of the inner insertion outer port (33). A plurality of outer cable jacks (5) are provided inside the outer cylinder body (21). All the outer cable jacks (5) are arranged in layers and are presented as a plurality of detection outer layers (50) from top to bottom. Each detection outer layer (50) is annular, and the outer cable jacks (5) in each detection outer layer (50) are evenly distributed along the same circumference. The outer cable jack (5) includes an outer insertion inner port (51), an outer jacking channel (52), and an outer insertion outer port (53) connected in sequence. The outer insertion inner port (51) is flush with the inner wall of the outer cylinder body (21), and the outer insertion outer port (53) is flush with the outer wall of the outer cylinder body (21). A second optical cable (6) is correspondingly inserted into each outer cable jack (5). The inner end of the second optical cable (6) is located inside the outer jacking channel (52), and the outer end of the second optical cable (6) passes through the outer insertion outer port (53) and is connected to an optical signal processor (7) located outside the outer sleeve (2). The outer cable jack (5) corresponds to the inner cable jack (3) one by one, and the first optical cable (4) corresponds to the second optical cable (6) one by one. The first optical cable (4) and its corresponding second optical cable (6) are arranged opposite to each other, and an optical cable gap (62) is formed between the two optical cables. In a single detection inner layer (30), inner air holes (8) communicating with the inner column cavity (12) are provided between adjacent inner cable jacks (3). All the inner air holes (8) in the same detection inner layer (30) are evenly arranged along the same circumference. In a single detection outer layer (50), outer air holes (9) communicating with the outer cylinder cavity (22) are provided between adjacent outer cable jacks (5). All the outer air holes (9) in the same detection outer layer (50) are evenly arranged along the same circumference. The inner air holes (8) correspond to the outer air holes (9) one by one, and the outer orifice (81) of the inner air hole (8) is aligned and communicated with the inner orifice (91) of its corresponding outer air hole (9).

2. The light transmission method filter bag detection device according to claim 1, characterized in that: The bottom of the outer cylinder body (21) is an open structure or an outer chassis (24), and a plurality of through outer through holes (25) are formed in the outer chassis (24).

3. The light transmission method filter bag detection device according to claim 1 or 2, characterized in that: An outer boss (41) is sleeved outside the inner insertion outer orifice (33), and an inner concave hole (61) is formed inside the outer insertion inner orifice (51), and the inner concave hole (61) is inserted and matched with the outer boss (41) one by one; A through hole (42) coaxial with the inner insertion hole (32) is formed in the outer boss (41), and the outer end of the first optical cable (4) passes through the inner insertion outer orifice (33) and then extends into the through hole (42).

4. The light transmission method filter bag detection device according to claim 3, characterized in that: The cross section of the outer boss (41) is an isosceles trapezoid, and the diameter of the outer boss (41) at the end far from the inner column body (11) is smaller than the diameter of the outer boss (41) at the end close to the inner column body (11).

5. The light transmission method filter bag detection device according to claim 1 or 2, characterized in that: The bottom of the inner insertion column (1) is an open structure or an inner chassis (14), and a plurality of through inner through holes (15) are formed in the inner chassis (14).

6. The light transmission method filter bag detection device according to claim 1 or 2, characterized in that: The optical signal processor (7) is arranged in the detection box (71), and the detection box (71) is sleeved outside the corresponding outer insertion outer orifice (53).

7. An apparatus for detecting a light-transmitting filter bag according to claim 1 or 2, characterized in that: In two adjacent detection inner layers (30), the inner air holes (8) in the upper detection inner layer (30) are staggered from the inner air holes (8) in the lower detection inner layer (30), and the staggered position corresponds to an inner cable jack (3) up and down; In two adjacent detection outer layers (50), the outer air holes (9) in the upper detection outer layer (50) are staggered from the outer air holes (9) in the lower detection outer layer (50), and the staggered position corresponds to an outer cable jack (5) up and down.

8. The light transmission method filter bag detection device according to claim 1 or 2, characterized in that: The first optical cable (4) and the second optical cable (6) are both communication-grade plastic optical cables.

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