CN112378932B - X-ray digital imaging DR electrified detection equipment with shielding device - Google Patents
X-ray digital imaging DR electrified detection equipment with shielding device Download PDFInfo
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Abstract
The utility model provides a take shield assembly's X-ray digital imaging dr electrified check out test set, includes frame, X-ray machine and dull and stereotyped detection board, electrified check out test set still includes first shielding shell and second shielding shell, and first shielding shell cover is established in the outside of X-ray machine and dull and stereotyped detection board, comprises interior aluminum alloy layer, outer aluminum alloy layer and the plumbum rubber layer that presss from both sides between interior aluminum alloy layer and outer aluminum alloy layer, and the second shielding shell cover is established outside the X-ray machine, comprises first shielding layer and the second shielding layer of wrapping up in and establishing in first shielding layer outside. The charged detection equipment for the X-ray digital imaging dr is provided with two shielding shells, and the composite shielding structure can carry out strong electromagnetic wave shielding on an X-ray machine, so that the X-ray digital imaging dr can hardly receive electromagnetic wave interference in the detection process, and the normal operation of the equipment is ensured.
Description
Technical Field
The invention relates to the technical field of live detection of strain clamps, in particular to an X-ray digital imaging DR live detection device with a shielding device.
Background
The hardware fitting is an important device of the power transmission line, and the quality of construction of the hardware fitting is directly related to safe operation of a power grid. According to statistics of national power grid companies and southern power grid companies, accidents caused by poor construction quality of power transmission line hardware caused by wire falling occur, and safety and stable operation of a power system are seriously affected, so that defects of the power transmission line hardware are accurately detected on site, and hardware with serious defects is an important means for guaranteeing safe operation of the power transmission line.
In the construction of the transmission line, hidden dangers of safe and reliable operation of the line are buried because the strain clamp and the splicing sleeve are not in accordance with the compression joint requirements. In recent years, the construction scale of the transmission line in China is greatly increased, the field construction workload of hardware fittings is huge, an effective field detection means is lacked, a large number of transmission lines are erected in remote areas, the ground conditions are complex, the transmission lines are difficult to check and maintain, the accidents of the transmission lines caused by the defects of the hardware fittings are gradually increased, and the safe operation of a power grid and the loss of national property are directly caused.
The national grid company also clearly puts forward the requirement for carrying out field detection on the crimping quality of the transmission line wires crossing the railway, the first-class and above highways, crossing points close to the gas station and crossing points among transmission lines with accident risks. The X-ray digital imaging technology is applied to defect detection of the power transmission wire and the hardware fitting, and can provide a more visual, convenient and effective detection method based on the traditional detection method, and the defects of material defects, broken strands of a steel core, scattered strands, inclusion, manufacturing and assembly of the hardware fitting and the like of the power transmission wire can be efficiently and sensitively detected on site.
The strain clamp and the splicing sleeve of the power transmission line serve as important components of the power transmission line fitting, play an important role in bearing mechanical load and electrical load, and the quality and the construction process of the strain clamp and the splicing sleeve are directly related to safe operation of a power grid. At present, in the construction of strain clamp and wire connection, a construction method of crimping by a crimping machine is generally adopted. The method for detecting the quality after crimping is that the quality is detected by a third party detecting mechanism, the third party detecting mechanism carries out external detection and grip strength test on the sample, when the grip strength of the detected sample is within the designed tension range, the sample is judged to be qualified, and then a construction unit completes crimping of the engineering strain clamp and the splicing sleeve according to the crimping method. The method can only detect samples, cannot detect all the strain clamps and splicing sleeves for construction one by one, and cannot effectively judge the defects in the strain clamps and splicing sleeves. And because of the power failure detection, great loss is caused for the power grid company, meanwhile, the detection efficiency is reduced, and the detection progress is severely restricted. Therefore, there is an urgent need to develop a device for detecting defects of power transmission line hardware in live working, which is more visual, convenient and effective.
Disclosure of Invention
The invention aims to solve the technical problems and provides an X-ray digital imaging DR electrified detection device with a shielding device.
The invention solves the technical problems, and adopts the following technical scheme: the utility model provides a take shielding device's X-ray digital imaging DR electrified detection equipment, which comprises a frame, X-ray machine and dull and stereotyped probe plate set up respectively in the both ends of frame, X-ray machine's ray emission direction and dull and stereotyped probe plate mutually perpendicular, be provided with the couple that is used for carrying on the power transmission line in the frame that is located dull and stereotyped probe plate below, electrified detection equipment still includes first shielding shell and second shielding shell, first shielding shell cover is established in the outside of X-ray machine and dull and stereotyped probe plate, first shielding shell is in the same place with the frame dismantlement, first shielding shell comprises interior aluminum alloy layer, outer aluminum alloy layer and the lead rubber layer that presss from both sides between interior aluminum alloy layer and the outer aluminum alloy layer, the side that the lead rubber layer contacted with interior aluminum alloy layer is provided with many first recesses that are parallel to each other side by side, be 60-90 contained angle between first recess and the second recess, first recess and second recess intussuseption are filled with shielding fiber, shielding shell cover is established at first shielding shell cover and second shielding shell cover and the outside of first shielding shell cover and bump layer, bump layer is provided with the first shielding layer and bump layer on the outside, bump layer is provided with the first shielding layer is provided with the bump layer and bump layer is formed to the first shielding layer and bump layer, bump layer is provided with the bump layer on the outside the first shielding layer and bump layer is opposite to bump layer, the first shielding layer is made of ceramic, and shielding paint is sprayed outside the second shielding layer.
Further optimizing the X-ray digital imaging DR electrified detection equipment with the shielding device: and an included angle of 75 degrees is formed between the first groove and the second groove.
Further optimizing the X-ray digital imaging DR electrified detection equipment with the shielding device: the depth of the first groove and the depth of the second groove are 1/4-1/3 of the thickness of the lead rubber layer.
Further optimizing the X-ray digital imaging DR electrified detection equipment with the shielding device: the content of lead in the lead rubber layer is not less than 60%.
Further optimizing the X-ray digital imaging DR electrified detection equipment with the shielding device: the shielding fiber contains not less than 40% by weight of barium sulfate.
Further optimizing the X-ray digital imaging DR electrified detection equipment with the shielding device: the shielding agent is a 1:1-1:3 mixture of aluminum powder and copper powder.
Advantageous effects
The X-ray digital imaging DR live detection equipment is used for detecting the defects of the power transmission line hardware fittings, can detect the lines under the condition of electrification, and is provided with two shielding shells, wherein a first shielding shell is covered outside an X-ray machine and a panel detection plate, the shells are composed of an inner aluminum alloy layer, an outer aluminum alloy layer and a lead rubber layer which is clamped between the inner aluminum alloy layer and the outer aluminum alloy layer, the basic shielding of the whole equipment can be formed, and the radiation of X-rays in the detection process is reduced. In order to strengthen the shielding effect of the first shielding shell, grooves are further formed in two side faces of the lead rubber layer of the first shielding shell respectively, shielding fibers are shielded in the grooves, and the shielding effect of the first shielding shell can be obviously improved through cross interference of the grooves on two sides. The second shielding shell is covered outside the X-ray machine, the second shielding shell is provided with X-ray and electromagnetic wave dual shielding, the shell is provided with two shielding layers, a bulge is arranged between the two shielding layers, shielding agents are filled in the bulge, nickel alloy nano powder is filled in the bulge, and the nickel alloy nano powder can be subjected to powerful electromagnetic wave shielding on the X-ray machine by the aid of the composite shielding structure, so that interference of electromagnetic waves can be hardly received in the detection process, and normal operation of equipment is guaranteed.
Drawings
FIG. 1 is a schematic diagram of a charged detection apparatus according to the present invention;
FIG. 2 is a schematic view showing the internal structure of a first shielding case in the live detection apparatus according to the present invention;
FIG. 3 is a schematic view showing the internal structure of a second shielding case in the live detection apparatus according to the present invention;
the marks in the figure: 1. the X-ray machine comprises a frame, 2, an X-ray machine, 3, a flat detection plate, 4, a hook, 5, a first shielding shell, 6, a second shielding shell, 5-1, a first groove, 5-2, a second groove, 6-1, a first shielding layer, 6-2, a second shielding layer, 6-3 and a bulge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in the figure: the utility model provides a take shield assembly's X-ray digital imaging DR electrified detection equipment, includes frame 1, X-ray machine 2 and dull and stereotyped detection board 3, and X-ray machine 2 and dull and stereotyped detection board 3 set up respectively at the both ends of frame 1, and the ray emission direction and the dull and stereotyped detection board 3 mutually perpendicular of X-ray machine 2 are provided with the couple 4 that is used for carrying on the power transmission line on the frame 1 that is located dull and stereotyped detection board 3 below.
The live detection device further comprises a first shielding shell 5 and a second shielding shell 6, the first shielding shell 5 is covered outside the X-ray machine 2 and the plate detection plate 3, the first shielding shell 5 is detachably connected with the frame 1, the first shielding shell 5 is composed of an inner aluminum alloy layer, an outer aluminum alloy layer and a lead rubber layer which is clamped between the inner aluminum alloy layer and the outer aluminum alloy layer, and the content of lead in the lead rubber layer is not lower than 60%.
The side surface of the lead rubber layer, which is contacted with the inner aluminum alloy layer, is provided with a plurality of first grooves 5-1 which are parallel to each other, the side surface of the lead rubber layer, which is contacted with the outer aluminum alloy layer, is provided with a plurality of second grooves 5-2 which are parallel to each other, an included angle of 75 degrees is formed between the first grooves 5-1 and the second grooves 5-2, and the depth of the first grooves 5-1 and the second grooves 5-2 is 1/4-1/3 of the thickness of the lead rubber layer. The first groove 5-1 and the second groove 5-2 are filled with shielding fibers.
The shielding fiber contains not less than 40% by weight of barium sulfate. The shielding fibers may be used as fiber products prepared in the prior art (CN 200710042057.8). The preparation method comprises the following steps:
raw materials: polyethylene powder, molecular weight: 2X 10 6 . The solvent of barium sulfate and polyethylene powder (weight percent 50:50) is white oil.
The mixture was prepared at a concentration of 10%. Swelling time 45 minutes, temperature: 100 ℃.
Double screw zone temperature: a section area: 175 ℃; two-stage region: 185 ℃; three-stage zone 188 ℃.
Booster pump temperature: 170℃and a pressure of 85kg/cm.
Spin pack pressure: 75kg/cm2.
Coagulation bath temperature: -6 ℃. First-order stretch ratio: 2.75, stretching temperature 65 ℃ and stretching speed 60m/min. The extract was xylene and the extraction was retained for 3.5 minutes. The second stretching ratio is 2.95 times, the stretching temperature is 95 ℃, the third stretching ratio is 3.4 times, and the stretching temperature is 135 ℃. Hot air setting at 125 ℃. The PE filaments were measured for 0.45mm diameter and fiber strength: 15.3cN/dteX; modulus: 152cN/dteX; elongation: 5%. PVA monofilament diameter was measured: 0.45mm, strength: 2.2cN/dteX; modulus 31cN/dteX; elongation 18%.
The second shielding shell 6 is covered outside the X-ray machine 2, the second shielding shell 6 is detachably connected with the first shielding shell 5, a transmitting hole is formed in one end, facing the flat plate detection plate 3, of the second shielding shell 6, the second shielding shell 6 consists of a first shielding layer 6-1 and a second shielding layer 6-2 wrapped outside the first shielding layer 6-1, protrusions 6-3 are formed in the side surfaces, opposite to the side surfaces, of the first shielding layer 6-1 and the second shielding layer 6-2, of the first shielding layer 6-1, the protrusions 6-3 on the first shielding layer 6-1 and the protrusions 6-3 on the second shielding layer 6-2 are arranged in a staggered mode, and shielding agents are arranged in the protrusions 6-3 and are 1:1-1:3 mixtures of aluminum powder and copper powder. The interlayer between the first shielding layer 6-1 and the second shielding layer 6-2 is filled with nickel alloy nano powder, and the first shielding layer 6-1 comprises an inner aluminum alloy layer, an outer aluminum alloy layer and a lead rubber layer which is clamped between the inner aluminum alloy layer and the outer aluminum alloy layer, wherein the content of lead in the lead rubber layer is not less than 60%. The second shielding layer 6-2 is made of ceramic, and shielding paint is sprayed outside the second shielding layer 6-2.
The shielding paint can be prepared by adopting the paint prepared in the prior art (CN 201710239885.4), and the specific method is as follows:
the materials are weighed according to the following weight proportion
40 parts by weight of a water-soluble polyurethane resin; 8 parts by weight of a carbon-coated nano electromagnetic wave shielding agent; 36 parts of copper powder; 3 parts by weight of 1, 2-bis (trifluoromethanesulfonyl) tetramethyldisilane; 10 parts by weight of wetting agent terpineol; 42 parts by weight of water; 4 parts by weight of silicon carbide whisker; 67 parts by weight of ethanol;
the preparation method of the charcoal Bao Nami electromagnetic wave shielding agent comprises the following steps:
1) Adding 3 parts by weight of dextro camphorsulfonic acid into 100 parts by weight of water, adding 20 parts by weight of corn starch, and heating at 40-60 ℃ for 12 hours;
2) Adding 4 parts by weight of NiSO4.6H2O into the solution in the step 1), stirring for 2-3 hours, and then drying for 6-8 hours at 110-130 ℃;
3) Calcining at 420-450 ℃ after drying to obtain carbonized chiral nickel substances;
4) Crushing carbonized chiral nickel substances to a particle size smaller than 2 microns, dispersing the crushed carbonized chiral nickel substances in a proper amount of water, then dropwise adding 2 parts by weight of sodium borohydride in methanol solution, and stirring the mixture for 2 to 3 hours at a temperature of between 40 ℃ and a rotation speed of between 800 and 1200rpm after the dropwise adding is finished; the weight ratio of sodium borohydride to methanol in the methanol solution of sodium borohydride is 1:4;
5) Drying at 110-120deg.C, and calcining at 300-320 deg.C in air atmosphere for 4-5 hr to obtain nanometer electromagnetic wave shielding agent.
The electromagnetic wave shielding coating is prepared according to the following preparation method:
1) Adding metal powder and silicon carbide whisker into ethanol, and uniformly mixing and dispersing;
2) Adding 1, 2-bis (trifluoromethanesulfonyl oxy) tetramethyldisilane into the step 1) and uniformly mixing to form a first component;
3) Uniformly mixing water-soluble polyurethane resin, carbon Bao Nami electromagnetic wave shielding agent, wetting agent terpineol and water to form a component B;
4) Uniformly mixing the components A and B, and then grinding the mixture in a grinder at a high speed until the viscosity is 30-40S to obtain the electromagnetic wave shielding coating.
The X-ray digital imaging DR live detection equipment is used for detecting the defects of the power transmission line hardware fittings, can detect the lines under the condition of electrification, and is provided with two shielding shells, wherein a first shielding shell is covered outside an X-ray machine and a panel detection plate, the shells are provided with a basic shielding measure inner shielding layer, the inner shielding layer consists of an inner aluminum alloy layer, an outer aluminum alloy layer and a lead rubber layer which is clamped between the inner aluminum alloy layer and the outer aluminum alloy layer, so that the basic shielding of the whole equipment can be formed, and the radiation of X-rays in the detection process is reduced. In order to strengthen the shielding effect of the first shielding shell, grooves are further formed in two side faces of the lead rubber layer of the first shielding shell respectively, shielding fibers are shielded in the grooves, and the shielding effect of the first shielding shell can be obviously improved through cross interference of the grooves on two sides. The second shielding shell is covered outside the X-ray machine, the second shielding shell is provided with X-ray and electromagnetic wave dual shielding, the shell is provided with two shielding layers, a bulge is arranged between the two shielding layers, shielding agents are filled in the bulge, nickel alloy nano powder is filled in the bulge, and the nickel alloy nano powder can be subjected to powerful electromagnetic wave shielding on the X-ray machine by the aid of the composite shielding structure, so that interference of electromagnetic waves can be hardly received in the detection process, and normal operation of equipment is guaranteed.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (6)
1. The utility model provides a take shield assembly's X-ray digital imaging DR electrified detection equipment, includes frame (1), X ray machine (2) and dull and stereotyped detection board (3), and X ray machine (2) and dull and stereotyped detection board (3) set up respectively in the both ends of frame (1), and the ray emission direction and the dull and stereotyped detection board (3) mutually perpendicular of X ray machine (2) are provided with on frame (1) of being located dull and stereotyped detection board (3) below and are used for hanging couple (4) on the power transmission line, its characterized in that: the charged detection equipment further comprises a first shielding shell (5) and a second shielding shell (6), wherein the first shielding shell (5) is covered outside the X-ray machine (2) and the flat detection plate (3), the first shielding shell (5) is detachably connected with the frame (1), the first shielding shell (5) is composed of an inner aluminum alloy layer, an outer aluminum alloy layer and a lead rubber layer clamped between the inner aluminum alloy layer and the outer aluminum alloy layer, a plurality of first grooves (5-1) which are parallel to each other are arranged on the side surface, which is contacted with the inner aluminum alloy layer, of the lead rubber layer, a plurality of second grooves (5-2) which are parallel to each other are arranged on the side surface, which is contacted with the outer aluminum alloy layer, of the lead rubber layer, the first grooves (5-1) and the second grooves (5-2) are formed by an included angle of 60-90 degrees, shielding fibers are filled in the first grooves (5-1) and the second grooves (5-2), the second shielding shell (6) is covered outside the X-ray machine (2), the second shielding shell (6) is connected with the first shielding shell (6) and the second shielding shell (6) which are connected with the outer aluminum alloy layer (6) in a detachable mode, the first shielding shell (6) and the second shielding shell (6) are arranged on the first end (6) and the first shielding shell (6) and the second shielding shell (6) are connected with the second shielding shell (6) and the second shielding shell (6) which are arranged on the flat detection plate, the aluminum alloy shielding device is characterized in that protrusions (6-3) are arranged on opposite side surfaces of the first shielding layer (6-1) and the second shielding layer (6-2), the protrusions (6-3) on the first shielding layer (6-1) and the protrusions (6-3) on the second shielding layer (6-2) are arranged in a staggered mode, shielding agents are arranged in the protrusions (6-3), nickel alloy nano powder is filled in an interlayer between the first shielding layer (6-1) and the second shielding layer (6-2), an inner aluminum alloy layer, an outer aluminum alloy layer and a lead rubber layer clamped between the inner aluminum alloy layer and the outer aluminum alloy layer are arranged in the first shielding layer (6-1), the second shielding layer (6-2) is made of ceramic materials, and shielding paint is sprayed outside the second shielding layer (6-2).
2. The X-ray digital imaging DR live detection apparatus with shielding device according to claim 1, wherein: an included angle of 75 degrees is formed between the first groove (5-1) and the second groove (5-2).
3. The X-ray digital imaging DR live detection apparatus with shielding device according to claim 1, wherein: the depth of the first groove (5-1) and the depth of the second groove (5-2) are 1/4-1/3 of the thickness of the lead rubber layer.
4. The X-ray digital imaging DR live detection apparatus with shielding device according to claim 1, wherein: the content of lead in the lead rubber layer is not less than 60%.
5. The X-ray digital imaging DR live detection apparatus with shielding device according to claim 1, wherein: the shielding fiber contains not less than 40% by weight of barium sulfate.
6. The X-ray digital imaging DR live detection apparatus with shielding device according to claim 1, wherein: the shielding agent is a 1:1-1:3 mixture of aluminum powder and copper powder.
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