Method for measuring pollution degree of electric facility, pollution degree measuring device, polluting substance collection device, and method for manufacturing polluting substance collection device

Abstract

This method for measuring a pollution degree comprises: a step (S11) for collecting a polluting substance on the surface of an electric facility by using a planar polluting-substance capturing part which is disposed on a surface of a resin member on one side and which contains certain amounts of a solvent and a solvent absorbent polymer per certain area; a step (S12) for sealing the polluting-substance capturing part after having collected the polluting substance; a step (S13) for unsealing the sealed polluting-substance capturing part and extracting the polluting substance from the polluting-substance capturing part; and a step (S14) for analyzing the extracted polluting substance by using a measurement device.

Description

Method for measuring the degree of contamination of electrical equipment, contamination measurement device, contamination material sampling device, and method for manufacturing the contamination material sampling device

[0001] The present disclosure relates to a pollution level measurement method for electrical equipment, a pollution level measurement device, a pollution material sampling device, and a method for manufacturing a pollution material sampling device.

[0002] For example, in electrical facilities such as power distribution facilities and industrial electrical equipment, conductive substances containing ions may adhere to the surface of insulating materials, causing deterioration of the insulating properties. Therefore, there is a need for a technology to evaluate the degree of surface contamination caused by ions.

[0003] For example, Japanese Patent Application Laid-Open No. 2010-60460 (Patent Document 1) discloses a method for measuring the degree of contamination in which a water-absorbent polymer sheet is attached to the measurement surface of an apparatus to collect water-soluble contaminants, the conductivity of a solution in which the collected contaminants are dissolved or the concentration of the contaminants is measured, and the measured value is converted into a degree of contamination.

[0004] JP 2010-60460 A

[0005] However, the method disclosed in JP 2010-60460 A (Patent Document 1) requires the preparation of pure water or the like in addition to the sheet for collecting contaminants, and cumbersome work is required on-site where electrical equipment is installed to impregnate the sheet with pure water or the like.

[0006] The present disclosure is intended to solve the above-mentioned problems, and aims to provide a pollution level measurement method for electrical equipment, a pollution level measurement device, and a pollution material sampling device that are easy to operate.

[0007] The present disclosure relates to a contaminant collection device for electrical equipment, which includes a resin member and a planar contaminant capture unit disposed on a first surface of the resin member and containing a fixed amount of solvent and a solvent-absorbent polymer per unit area.

[0008] In another aspect, the present disclosure relates to a pollution level measuring device that measures the pollution level of electrical equipment from the pollution material collected by the pollution material collecting device for electrical equipment.

[0009] In yet another aspect, the present disclosure relates to a method for measuring the degree of contamination of electrical equipment, the method for measuring the degree of contamination of electrical equipment including the steps of: collecting contaminants on the surface of the electrical equipment using a planar contaminant capture unit that is disposed on one surface of a resin member and contains a fixed amount of solvent and a solvent-absorbent polymer per fixed area; sealing the contaminant capture unit after collecting the contaminants; opening the sealed contaminant capture unit and extracting the contaminants from the contaminant capture unit; and analyzing the extracted contaminants using a measurement device.

[0010] The method, device, and device for measuring the degree of contamination of electrical equipment disclosed herein use a planar contamination capture section containing a solvent and a solvent-absorbent polymer, which simplifies the work of workers on site.

[0011] FIG. 1 is a diagram showing the configuration of a pollution level measurement device used in embodiment 1. FIG. 2 is a cross-sectional view of the pollution level measurement device shown in FIG. 1. FIG. 3 is a flowchart for explaining a manufacturing method of a pollution material sampling device of this embodiment. FIG. 4 is a flowchart for explaining a pollution level measurement method of this embodiment. FIG. 5 is a diagram showing the configuration of a pollution level measurement device used in embodiment 2. FIG. 6 is a cross-sectional view of the pollution level measurement device shown in FIG. 5. FIG. 7 is a cross-sectional view of a modification of embodiment 3. FIG. 8 is a diagram showing the configuration of a first modification of the tool body. FIG. 9 is a diagram showing the configuration of a second modification of the tool body. FIG. 10 is a diagram showing the configuration of a third modification of the tool body.

[0012] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Below, embodiments including multiple modifications will be described, but it was originally intended that the configurations described in each embodiment be combined as appropriate. Note that identical or corresponding parts in the drawings will be designated by the same reference numerals, and their description will not be repeated.

[0013] Embodiment 1 Fig. 1 is a diagram showing the configuration of a contamination level measurement device used in embodiment 1. Fig. 2 is a cross-sectional view of the contamination level measurement device shown in Fig. 1.

[0014] The pollutant material sampling device 1 shown in FIGS. 1 and 2 is described as a pollution level measuring device or a part thereof, but may also be a measuring tool or an auxiliary device for use of the pollution level measuring device.

[0015] The pollutant sampling device 1 includes a pollutant capture unit 3 made of a solvent-absorbent polymer impregnated with a certain amount of solvent, a resin member 2 to which the pollutant capture unit 3 is attached, and a sealing sheet 4 for sealing the pollutant capture unit 3. An adhesive layer 5 is formed on the sealing sheet 4. The solvent-absorbent polymer may be, for example, a water-absorbent polymer that absorbs water. The solvent to be absorbed may be something other than water (e.g., ethanol).

[0016] The resin member 2 is a substrate to which a water-containing solvent-absorbent polymer is attached, and may be in the form of, for example, a film or sheet, as shown in FIG.

[0017] In addition, it is desirable that the sealing sheet 4 can be peeled off from the resin member 2, the contaminating substances can be collected, and then the sealing sheet 4 can be re-adhered to the resin member 2. In this case, as shown in FIG. 1 , it is desirable that the adhesive layer 5 adheres to the resin sheet 4 side during peeling and peels off from the resin member 2.

[0018] For example, electrical equipment such as power receiving and distribution equipment uses insulating materials that require high insulation performance. By supporting conductors with insulating materials and electrically insulating other parts from the conductors, electrical accidents can be prevented. However, if the surface of the insulating materials in electrical equipment becomes dirty, the insulating performance will decrease.

[0019] Insulating materials are classified into organic insulators made of organic materials such as resins and inorganic insulators made of inorganic materials such as porcelain. These insulating materials cannot be easily replaced individually, and many of them are non-repairable parts. Therefore, the degree of surface contamination is evaluated to estimate the remaining lifespan.

[0020] To evaluate the degree of contamination, it is necessary to examine the type and amount of contaminants adhering to the surface of insulating materials. Conventionally, this requires workers to wipe off the contaminants using a cotton cloth or similar material soaked in a solvent such as pure water.

[0021] According to the pollutant sampling device 1 shown in the first embodiment, a specified amount of solvent such as pure water is preliminarily contained in the pollutant capture unit 3. Therefore, there is no need to soak the pollutant capture unit 3 in a solvent near the electrical equipment.

[0022] Furthermore, since the pollutant capturing section 3 is sealed with the sealing sheet 4, the solvent is prevented from evaporating before use.

[0023] The user can easily collect contaminants by peeling off the sealing sheet 4 and pressing the exposed contaminant capture part 3 made of a solvent-absorbent polymer against a target. At this time, the adhesive layer 5 peels off from the resin member 2 and remains on the sealing sheet 4 side, so that the adhesive layer 5 does not interfere with the collection of contaminants and the adhesive strength of the adhesive layer 5 is not weakened by the adhesion of contaminants.

[0024] Furthermore, if the sealing sheet 4 can be reattached after peeling off the sealing sheet 4 and collecting the contaminants, it is possible to prevent other substances from adhering to the contaminant capturing section 3 during movement.

[0025] This is convenient when sending and returning the pollutant material sampling device 1 between the user and the evaluation company, for example, when the user outsources the evaluation of the degree of pollution to an external evaluation company.

[0026] 3 is a flowchart illustrating a method for manufacturing a contaminant sampling device according to the present embodiment. As shown in FIG. 3, first, a certain area of ​​a solvent-absorbent polymer is attached to a film (sheet) that is a resin member 2 (step S1).

[0027] Next, the attached solvent-absorbent polymer is pre-impregnated with a required amount (predetermined amount) of solvent (for example, pure water) (step S2).

[0028] Thereafter, the resin film (sheet) to which the solvent-absorbent polymer impregnated with the solvent is attached is sealed with a sealing sheet or the like (step S3).

[0029] The contaminant sampling device thus completed can be easily moved near the electrical equipment to be measured, and once opened, can be used immediately without preparing a solvent such as pure water.

[0030] 4 is a flowchart illustrating the contamination level measurement method of this embodiment. As shown in FIG. 4, first, the contamination sampler is opened, and the contamination capture unit 3 is pressed or attached to the surface of the electrical equipment to be measured, so that the contamination is attached to the contamination capture unit 3 (step S11).

[0031] Next, the pollutant collection device is sealed after collection (step S12). Specifically, the sealing sheet 4 is re-adhered to the resin member 2 to seal the pollutant capture unit 3. This prevents other substances from adhering to the pollutant capture unit 3 during transportation.

[0032] The above steps S11 and S12 are performed by the user or an employee of the commissioned evaluation company at the location of the electrical equipment to be evaluated. The following steps S13 and S14 are performed by the user or an employee of the commissioned evaluation company at the location of the measuring device that analyzes the contaminants.

[0033] In step S13, the sealed pollutant sampling device is opened, and a process is performed to extract the pollutants from the pollutant capture unit 3. For example, the pollutant capture unit 3 is immersed in a solvent such as pure water, and the pollutants are eluted into the solvent.

[0034] Next, the contaminants dissolved in the solvent are measured to evaluate the degree of contamination (step S14). Various measuring devices can be used in step S14. Examples of measuring devices that can be used include, but are not limited to, liquid chromatography and electrical conductivity measuring devices.

[0035] In the past, it was necessary to separately prepare a micropipette, a pure water injection conduit, and purified water, and then perform the cumbersome task of letting the water soak in on-site where the electrical equipment was installed.In contrast, with this embodiment, there is no need for the separate task of letting the water soak in, so even users can easily collect pollutants and measure the degree of pollution.

[0036] Embodiment 2 Fig. 5 is a diagram showing the configuration of a contamination level measuring device used in embodiment 2. Fig. 6 is a cross-sectional view of the contamination level measuring device shown in Fig. 5.

[0037] The pollutant material sampling device 10 shown in FIGS. 5 and 6 is described as a pollution level measuring device or a part thereof, but may also be a measuring tool or an auxiliary device for using the pollution level measuring device.

[0038] The pollutant collection device 10 comprises a pollutant capture section 3 made of a solvent-absorbent polymer impregnated with a certain amount of solvent, a resin member 12 to which the pollutant capture section 3 is attached, and a sealing sheet 14 for sealing the pollutant capture section 3.

[0039] The sealing sheet 14 has peelable adhesive layers 15 arranged on three of its four sides. The remaining side of the sealing sheet 14 is fixed to the resin member 2. For example, in the example shown in Fig. 5, the resin member 12 and the sealing sheet 14 are formed by folding a single resin film. However, the present invention is not limited to this configuration, and two resin films may be bonded or welded together so that one side of each film does not peel off.

[0040] With this configuration, in addition to the same effects as in the first embodiment, it is possible to prevent the sealing sheet 14 from being lost or accidentally discarded after being peeled off from the resin member 12.

[0041] The adhesive layer 15 is preferably re-adhesive, but is still useful even if it is not re-adhesive. For example, the sealing sheet 14 can be used as a cover to protect the pollutant capture unit 3 from other substances after capturing the pollutants.

[0042] Embodiment 3. In Embodiments 1 and 2, the outer periphery of the sealing sheet is adhered to the resin member to seal the pollutant capture unit impregnated with a solvent such as water. This prevents the solvent from evaporating and being lost from the solvent-absorbent polymer. In Embodiment 3, a bag or the like is used instead of the sealing sheet to seal the pollutant capture unit, thereby achieving a similar effect.

[0043] Fig. 7 is a diagram showing the configuration of a contamination level measuring device used in embodiment 3. Fig. 8 is a cross-sectional view of the contamination level measuring device shown in Fig. 7.

[0044] The pollutant material sampling device 20 shown in FIGS. 7 and 8 is described as a pollution level measuring device or a part thereof, but may also be a measuring tool or an auxiliary device for use of the pollution level measuring device.

[0045] The pollutant collecting device 20 comprises a pollutant capturing part 3 made of a solvent-absorbent polymer impregnated with a certain amount of solvent, and a resin member 22 to which the pollutant capturing part 3 is attached.

[0046] The contaminant sampling device 20 further includes a bag 24 for sealing the contaminant capture unit 3. The bag 24 is formed of a material that is difficult to penetrate even when the solvent evaporates. For example, the bag 24 is formed by placing the resin member 22 inside a cylindrical resin film, and then welding or adhering an upper sheet 24A and a lower sheet 24B of the cylindrical resin film at both ends 26, 27. Note that instead of a cylindrical resin film, the resin member 22 may be sandwiched between two resin films, and the two resin films may be welded or adhered so as to surround the periphery of the resin member 22.

[0047] The bag 24 may be provided with a cut or jagged portion to make it easier to open by hand. In this case, after the bag 24 is opened by hand and the pollutants are collected in the pollutant capture unit 3, the collected pollutants are stored in a separately prepared sealed bag.

[0048] If the bag 24 has a resealable resin zipper, a separate sealed bag for return shipping is not necessary. Also, although the sealing means is shown as a bag in Figures 7 and 8, it does not necessarily have to be bag-shaped. For example, the sealing means may be a highly airtight resin box (case).

[0049] Figure 9 is a cross-sectional view of a modification of the third embodiment. In the case shown in Figure 8, after opening the bag, a separate sealed bag had to be prepared to store the resin member 22 after the contaminant was collected. In the contaminant collecting device 20A shown in Figure 9, a storage bag 28 is enclosed in the bag 24 in advance together with the resin member 22. This eliminates the need to prepare a separate sealed bag.

[0050] It is preferable that the bag 28 can be sealed with a resin zipper, a sealing adhesive, or the like after the resin member 22 from which the contaminants have been collected is enclosed inside.

[0051] [Modification of the Contamination Substance Sampling Tool Body] In the first to third embodiments, the resin member to which the contaminant capture unit 3 is attached is in the form of a film or sheet, but it may have other shapes. Hereinafter, the resin member to which the contaminant capture unit 3 is attached will be referred to as the tool body.

[0052] Fig. 10 is a diagram showing the configuration of a first modified example of the tool body. The pollutant sampling device 30 shown in Fig. 10 includes a tool body 32 and a pollutant capture unit 3. The tool body 32 is a columnar resin member, and the pollutant capture unit 3 is attached to the bottom surface. Although the tool body 32 is cylindrical in Fig. 10, it may also be in the shape of a square or polygonal column.

[0053] The fouling substance capture unit 3 is the same as in the first to third embodiments, and therefore description thereof will not be repeated.

[0054] Although not shown, the pollutant sampling device 30 has a structure for sealing the pollutant capture unit 3. For example, as in the first and second embodiments, a sealing sheet may be attached to the bottom surface of the tool body 32, or as in the third embodiment, a bag may be used to enclose the tool body 32, thereby preventing evaporation of a solvent such as water from the pollutant capture unit 3.

[0055] In this way, by making the tool body in an easy-to-hold shape such as a pillar rather than a sheet, it becomes easier to press the pollutant capture part 3 against the measurement surface of the electrical equipment being evaluated to collect the pollutants.

[0056] Fig. 11 is a diagram showing the configuration of a second modified example of the tool body. The pollutant sampling device 40 shown in Fig. 11 includes a tool body 42, a pollutant capture unit 3, and a handle 43. The tool body 42 is a resin member having a columnar shape, and the pollutant capture unit 3 is attached to the bottom surface. Although the tool body 42 is shown in Fig. 11 as being cylindrical, it may also be in the shape of a prismatic or polygonal column. Although the handle 43 is shown in Fig. 11 as being cylindrical, it may also be in the shape of a prismatic or polygonal column, or may be in the shape of a plate.

[0057] The fouling substance capture unit 3 is the same as in the first to third embodiments, and therefore description thereof will not be repeated.

[0058] Although not shown, the pollutant collection device 40 has a structure for sealing the pollutant capture unit 3. For example, as in the first and second embodiments, a sealing sheet is used on the bottom surface of the tool body 42, or a bag is used as in the third embodiment, to prevent solvents such as water from evaporating from the pollutant capture unit 3.

[0059] In this way, by attaching a handle that is easy to hold rather than a sheet-shaped handle to the tool body, it becomes easier to access narrow and hard-to-reach places, making it easier to press the pollutant capture unit 3 against the measurement surface of the electrical equipment being evaluated to collect pollutants.

[0060] FIG. 12 is a diagram showing the configuration of a third modified example of the tool body. The contaminant material sampling device 50 shown in FIG. 12 includes a tool body 52 and a contaminant material capture unit. The contaminant material capture unit includes a first capture unit 3A and a second capture unit 3B. The tool body 52 may have any shape. While the tool body 52 is sheet-shaped in FIG. 12, it may also be cylindrical, rectangular, or polygonal as shown in FIG. 10. Furthermore, a handle may be attached as shown in FIG. 11.

[0061] A plurality of solvent-absorbent polymer sheets, which serve as fouling substance capture units, are attached to the tool body 52. ​​This allows the degree of fouling at a plurality of locations to be evaluated at once.

[0062] For example, if a measurement location where insulation degradation is a concern in a power distribution facility or the like is predetermined, arranging the first and second capture units 3A and 3B to match this measurement location will facilitate measurement and prevent measurement errors.

[0063] [Summary] The present disclosure will be summarized again with reference to the drawings.

[0064] (Item 1) As shown in Figure 1, the contaminant collection device 1 for electrical equipment of the present disclosure comprises a resin member 2 and a planar contaminant capture section 3 that is arranged on a first surface of the resin member 2 and contains a fixed amount of solvent and solvent-absorbent polymer per fixed area.

[0065] (Item 2) The contaminant collecting device 1 for electrical equipment described in item 1 further includes a sealing sheet 4 arranged to seal the contaminant capture unit 3 between the sealing sheet 4 and the resin member 2, and an adhesive layer 5 arranged between the sealing sheet 4 and the resin member 2 to surround the contaminant capture unit 3. The adhesive layer 5 is peelable from and re-adherable to at least one of the sealing sheet 4 and the resin member 2.

[0066] (Item 3) The contaminant collecting device 20 for electrical equipment described in item 1 further includes a first bag 24 that seals the resin member 22 in which the contaminant capture unit 3 is arranged, as shown in Figures 7 and 8 .

[0067] (4) The pollutant collection device 20A for electrical equipment described in 3 is housed in a first bag 24 together with the resin member 22 in which the pollutant capture section 3 is arranged, as shown in Figure 9, and further includes a second bag 28 for sealing the resin member 22 in which the pollutant capture section 3 is arranged after capturing the pollutants.

[0068] (Item 5) In the contaminant sampling device for electrical equipment according to any one of items 1 to 4, the resin members 2, 12, 22 are sheet-shaped, as shown in FIGS. 1, 2, and 5-9.

[0069] (Item 6) In the contaminant collection device for electrical equipment described in any one of items 1 to 4, as shown in Figure 10, the resin member (tool body 32) is columnar, and the contaminant capture section 3 is arranged on the bottom surface of the resin member (tool body 32).

[0070] (Item 7) The electrical equipment contaminant material collection device described in Item 6 further includes a handle portion 43, as shown in FIG. 11, which is arranged on the top surface opposite the bottom surface of the resin member (tool body 42) and has a smaller diameter (or a smaller cross-sectional area) than the columnar resin member (tool body 42).

[0071] (Item 8) In the pollutant collection device for electrical equipment described in any one of items 1 to 4, as shown in Figure 12, the pollutant capture section 3 includes a first capture section 3A and a second capture section 3B arranged on a resin member at a distance from each other.

[0072] (Item 9) In another aspect, the present disclosure relates to a pollution level measuring device that measures the pollution level of electrical equipment from the pollution material collected by the pollution material collecting device for electrical equipment described in item 1.

[0073] (Item 10) In yet another aspect, the present disclosure relates to a method for measuring the degree of contamination of electrical equipment, which includes the steps of: collecting contaminants on the surface of the electrical equipment using a planar contaminant capture unit that is disposed on one surface of a resin member and contains a fixed amount of solvent and a solvent-absorbent polymer per fixed area, as shown in Fig. 4; sealing (or covering) the contaminant capture unit after collecting the contaminants (S12); opening (or removing the cover) the sealed contaminant capture unit and extracting the contaminants from the contaminant capture unit; and analyzing the extracted contaminants using a measuring device (S14).

[0074] (Item 11) In yet another aspect, the present disclosure relates to a method for manufacturing a contaminant sampling device for electrical equipment, which includes the steps of (S1) placing a solvent-absorbent polymer sheet on a resin member and (S2) impregnating the solvent-absorbent polymer sheet with a fixed amount of solvent per fixed area, as shown in Figure 3 .

[0075] (Item 12) The method for producing a contaminant sampling device for electrical equipment according to item 11 further comprises a step (S3) of sealing the solvent-absorbent polymer sheet after it has absorbed the solvent.

[0076] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims.

[0077] 1, 10, 20, 20A, 30, 40, 50 Contaminant substance sampling device, 2, 12, 22 Resin member, 3 Contaminant substance capture section, 3A First capture section, 3B Second capture section, 4, 14 Sealing sheet, 5, 15 Adhesive layer, 24, 28 Bag, 24A Upper sheet, 24B Lower sheet, 26, 27 Both ends, 32, 42, 52 Tool body, 43 Handle portion.

Claims

1. A contaminant collection device for electrical equipment, comprising: a resin member; and a planar contaminant capture section disposed on a first surface of the resin member and containing a fixed amount of solvent and solvent-absorbent polymer per fixed area.

2. A pollutant collection device for electrical equipment as described in claim 1, further comprising: a sealing sheet arranged to seal the pollutant capture section between the sealing sheet and the resin member; and an adhesive layer arranged between the sealing sheet and the resin member so as to surround the pollutant capture section, wherein the adhesive layer is peelable and re-adherable to at least one of the sealing sheet and the resin member.

3. The pollutant collecting device for electrical equipment according to claim 1, further comprising a first bag for sealing the resin member in which the pollutant capturing section is arranged.

4. A pollutant collection device for electrical equipment as described in claim 3, further comprising a second bag that is housed in the first bag together with the resin member in which the pollutant capture section is arranged, and that seals the resin member in which the pollutant capture section is arranged after capturing the pollutant.

5. A contaminant collection device for electrical equipment according to any one of claims 1 to 4, wherein the resin member is in the form of a sheet.

6. A pollutant collection device for electrical equipment as described in any one of claims 1 to 4, wherein the resin member is columnar, and the pollutant capture section is positioned on the bottom surface of the resin member.

7. The contaminant collecting device for electrical equipment as described in claim 6, further comprising a handle portion disposed on the top surface opposite to the bottom surface and having a diameter smaller than that of the columnar resin member.

8. A pollutant collection device for electrical equipment as described in any one of claims 1 to 4, wherein the pollutant capture section includes a first capture section and a second capture section spaced apart from each other and arranged on the resin member.

9. A pollution level measuring device for measuring the pollution level of electrical equipment from the pollutant material collected by the pollution material collecting device for electrical equipment according to claim 1.

10. A method for measuring the degree of contamination of electrical equipment, comprising the steps of: collecting contaminants on the surface of electrical equipment using a planar contaminant capture unit that is arranged on one side of a resin member and contains a fixed amount of solvent and a solvent-absorbent polymer per fixed area; sealing the contaminant capture unit after collecting the contaminants; opening the sealed contaminant capture unit and extracting the contaminants from the contaminant capture unit; and analyzing the extracted contaminants using a measuring device.

11. A method for manufacturing a contaminant collection device for electrical equipment, comprising the steps of: placing a solvent-absorbent polymer sheet on a resin member; and impregnating the solvent-absorbent polymer sheet with a fixed amount of solvent per fixed area.

12. The method for manufacturing a contaminant collecting device for electrical equipment according to claim 11, further comprising the step of sealing the solvent-absorbent polymer sheet after it has absorbed the solvent.

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