Wear measurement device

Abstract

To provide a wear amount measuring device that eliminates the need of installation of instruments such as a permanent magnet and a magnetic force detector in seal member wear amount measurement operations, and can accurately, simply, and easily perform the seal member wear amount measurement operations.SOLUTION: A wear amount measuring device 20 comprises: a measuring member 21 that is pressed against a seal member 13a and an attachment fitting 14a to change its shape, wherein lengths L21C, L21C' of a portion 21C in contact with the seal member 13a are changed according to distances L1, L1' between a side plate 3 and the attachment fitting 14a; a holding member 24 that holds the measuring member 21; and a rod-like member 25 that is attached to the holding member 24 at one end and provided with a vertical measurement auxiliary bar 26 at the other end. The vertical measurement auxiliary bar 26 is provided crossing a longitudinal direction of the rod-like member 25 so that one end face 26a of the vertical measurement auxiliary bar 26 is flush with one end face 24a of the holding member 24.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a wear measurement device that is disposed on the outer periphery of a piston that moves up and down along the inner wall of a gas holder depending on the amount of gas stored therein, and is used to measure the wear of a sealing member that maintains airtightness between the piston and the inner wall of the gas holder. [Background technology]

[0002] In steelworks, for example, gas holders are installed to collect and store gas generated in blast furnaces and supply the gas to other factories within the steelworks. Here, dry gas holders are equipped with a piston that moves up and down along the side plate (inner wall) of the gas holder depending on the amount of gas stored inside. Gas is stored in the lower part of the piston, and workers can enter the upper part of the piston. A sealing device is arranged on the outer periphery of the piston to maintain an airtight seal between the piston and the side wall of the gas holder.

[0003] One type of sealing device is a seal oil type that seals the gas using the static pressure of the seal oil, and this invention is directed to a seal oil type sealing device. A seal oil type sealing device seals the gas by maintaining the static pressure of the seal oil at or above the gas pressure, and presses the sealing member that slides against the side wall of the gas holder against the side wall using a pressing mechanism with a counterweight, and seals the gap between the seal oil and the gas (between the outer periphery of the piston and the side plate of the gas holder) with this surface pressure.

[0004] The seal element of the sealing device is attached to the outer periphery of the piston and slides against the side plate of the gas holder, so it wears over time. The seal element is the heart of the dry gas holder, and accurately measuring and evaluating the amount of wear is extremely important for disaster prevention. For this reason, the amount of wear on the seal element is inspected regularly or irregularly. The seal element of the sealing device is immersed in seal oil, making it difficult for an operator to visually check the wear from above the piston. Therefore, in order to accurately measure the wear of the seal element, operation of the gas holder was stopped, the gas was temporarily transferred to another holder, the seal oil was removed, and the seal element was then removed to measure the wear of the seal element.

[0005] Measuring the wear amount of the seal member while stopping the operation of the gas holder results in some of the gas being dispersed when the gas is transferred to another holder, and the operation takes a huge amount of time. For this reason, a seal wear amount detection device for a dry gas holder, as shown in Patent Document 1, has been proposed as a device for accurately measuring the wear amount of the seal member of a dry gas holder without stopping the operation of the gas holder.

[0006] The seal wear detection device for a dry gas holder shown in Patent Document 1 is equipped with a permanent magnet attached to the sealing device so that it moves closer to the side plate as the sealing material (seal rubber) of the sealing device wears, and a magnetic force detector for detecting the wear amount of the sealing material by measuring the magnetic force of the permanent magnet from outside the gas holder. This makes it possible to detect the amount of wear on the seal material, which is the heart of the dry gas holder. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-102008 Summary of the Invention [Problem to be solved by the invention]

[0008] However, the conventional seal wear detection device for a dry gas holder shown in Patent Document 1 has the following problems. That is, in the case of the seal wear detection device for a dry gas holder shown in Patent Document 1, it is necessary to attach a permanent magnet to the seal device and to install a magnetic force detector on the outer surface of the side plate of the gas holder. Here, in order to stably detect the magnetic force of the permanent magnet, it is necessary to maintain and inspect the magnetic force detector, which requires maintenance and inspection work in addition to the work of measuring the wear amount of the seal material, making the work of measuring the wear amount of the seal material complicated and troublesome.

[0009] Therefore, the present invention has been made to solve this conventional problem, and its object is to provide a wear measurement device that does not require the installation of equipment such as permanent magnets or magnetic force detectors when measuring the wear amount of sealing members, and that can measure the wear amount of sealing members accurately, simply, and easily. [Means for solving the problem]

[0010] In order to solve the above problem, a wear amount measuring device according to one aspect of the present invention is a sealing device for maintaining airtightness between the outer periphery of a piston that moves up and down along a side plate of a gas holder depending on the amount of gas stored, and the side plate, the sealing device comprising a sealing member that is pressed against the side plate to seal between the outer periphery of the piston and the side plate, and a mounting bracket that attaches the sealing member to the outer periphery of the piston, a wear amount measuring device used to measure the amount of wear of the sealing member in the sealing device, the device comprising: a measuring member that deforms when pressed against the sealing member and the mounting bracket, and the length of the portion that contacts the sealing member changes depending on the distance between the side plate and the mounting bracket, and a holding member that holds the measuring member; The measuring instrument is provided with a rod-shaped member having one end attached to the holding member and the other end provided with a vertical measurement auxiliary bar, the vertical measurement auxiliary bar being disposed so as to intersect with the longitudinal direction of the rod-shaped member so that one end face of the vertical measurement auxiliary bar is flush with one end face of the holding member. [Effects of the Invention]

[0011] According to the wear measurement device of the present invention, when measuring the wear of the sealing member of a sealing device, there is no need to install equipment such as a permanent magnet or a magnetic force detector, and the wear measurement of the sealing member can be performed accurately, simply, and easily. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram showing a gas holder equipped with a sealing device in which a wear amount measuring device according to an embodiment of the present invention is used. [Figure 2] FIG. 2 is a diagram showing in detail the sealing device and its surroundings in the gas holder shown in FIG. [Figure 3] FIG. 3 is an enlarged view of the sealing device in FIG. 2. [Figure 4] 1 is a front view of a wear amount measuring device according to an embodiment of the present invention. [Figure 5] FIG. 5 is a left side view of the wear depth measuring device shown in FIG. [Figure 6] FIG. 10 is a front view of a second rod-shaped member and a vertical measurement auxiliary bar. [Figure 7] 1A and 1B show a shape restoring member, in which FIG. 1A is a front view and FIG. 1B is a left side view. [Figure 8] 1A and 1B show a state in which the shape-restoring member is in the retracted position, the first portion of the measuring member is in the first position, and the second portion of the measuring member is in the second position, where (a) is a front view and (b) is a left side view, respectively. However, (a) and (b) show a state in which the first flat plate of the holding member has been removed. [Figure 9] 9A and 9B are front and left side views, respectively, showing the state in which the shape-restoring member has moved from the retracted position shown in Fig. 8 to the initial position and all parts of the measuring member have returned to the first position. However, in Figs. 9A and 9B, the first flat plate of the holding member has been removed. [Figure 10] 10 is a diagram showing how the wear amount of a sealing member of a sealing device is measured using a wear amount measuring device. FIG. [Figure 11] 10 is a diagram showing the state in which the wear amount measuring device is pulled up after the measuring member of the wear amount measuring device is pressed against the sealing member and the mounting fixture in an initial state without wear. FIG. [Figure 12] 10 is a diagram showing a state in which the wear amount measuring device is pulled up after the measuring member of the wear amount measuring device is pressed against the seal member and the mounting fixture in a worn state. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments shown below are examples of devices and methods for embodying the technical concept of the present invention, and the technical concept of the present invention is not limited to the following embodiments in terms of the materials, shapes, structures, arrangements, etc. of the components. In addition, the drawings are schematic, and therefore it should be noted that the relationship between thickness and planar dimensions, ratios, etc. may differ from the actual relationship, and the drawings may also contain parts where the relationship and ratio of dimensions differ from each other.

[0014] FIG. 1 shows a gas holder equipped with a sealing device in which a wear amount measuring device according to one embodiment of the present invention is used. The gas holder 1 shown in Fig. 1 is a dry gas holder, and is composed of a side wall structure consisting of a base column 2 and a cylindrical side plate 3, a disk-shaped piston 4, a roof 5, and a bottom plate 6. The gas holder 1 is used to collect and store gas G generated in a blast furnace in a steelworks, for example, and to supply the gas G to other factories within the steelworks.

[0015] The piston 4 in the gas holder 1 moves up and down along the side plate 3 according to the amount of gas G stored, using the base column 2 or the side plate 3 as a guide. A sealing device 10 is provided on the outer periphery 4a of the piston 4 (see FIG. 2) to maintain airtightness between the outer periphery 4a of the piston 4 and the side plate 3. The sealing device 10 is a sealing oil type sealing device. The sealing device 10 seals the gas by maintaining the static pressure of the seal oil O equal to or greater than the gas pressure of the gas G, and as shown in FIG. 3, a pressing mechanism 8 presses multiple (four in this embodiment) seal members 13a-13d against the side plate 3, thereby sealing between the seal oil O and the gas G (between the outer periphery 4a of the piston 4 and the side plate 3) with this surface pressure. The sealing device 10 includes the multiple seal members 13a-13d and two mounting brackets 14a, 14b that attach the multiple seal members 13a-13d to the outer periphery 4 of the piston 4.

[0016] As shown in FIG. 3, the multiple seal members 13a-13d are attached to an annular plate 12, which protrudes outward from the outer peripheral surface of an annular mounting plate 11 attached to the outer peripheral portion 4a of the piston 4, with the upper seal members 13a and 13b sandwiched between two mounting brackets 14a and 14b, and the lower seal members 13c and 13d sandwiched between two mounting brackets 14a and 14b. Each of the multiple seal members 13a-13d is an annular plate made of synthetic rubber and has a predetermined thickness. When the multiple seal members 13a-13d are attached to the annular plate 12 using the two mounting brackets 14a and 14b, they are attached by being clamped together with bolts 15 and nuts 16. In other words, the multiple seal members 13a-13d are attached to the outer peripheral portion 4a of the piston 4 using the two mounting brackets 14a and 14b. As shown in FIG. 3, each of the two mounting brackets 14a and 14b has a substantially L-shaped cross section.

[0017] The pressing mechanism 7, which presses the plurality of seal members 13a to 13d against the side plate 3, includes a support member 7a attached to the upper surface of the piston 4, a first link 7b rotatably supported on the support member 7a, a second link 7d rotatably supported on the tip of the first link 7b, a swinging member 7e attached to the tip of the second link 7d, and a third link 7f, one end of which is rotatably supported on the swinging member 7e and the other end of which is attached to a mounting plate 11 of the sealing device 10. As shown in FIGS. 2 and 3, a counterweight 7c is attached to the rear end of the first link 7b, and the weight of the counterweight 7c operates the first link 7b, the second link 7d, the swinging member 7e, and the third link 7f, causing the mounting plate 11 of the sealing device 10 to press the plurality of seal members 13a to 13d against the side plate 3.

[0018] The multiple seal members 13a-13d slide against the side plate 3 of the gas holder 1 and therefore wear over time. The seal members 13a-13d are the heart of the gas holder 1, and accurately measuring and evaluating their wear is extremely important for disaster prevention. For this reason, in this embodiment, the wear amount of the uppermost seal member 13a is measured using a wear amount measuring device 20 shown in FIGS. 4 and 5. The reason why the wear amount of only the uppermost seal member 13a among the multiple seal members 13a-13d is measured is because the multiple seal members 13a-13d are pressed against the side plate 3 with a uniform pressing force in the vertical direction by the pressing mechanism 8, and therefore the wear amounts of all the seal members are uniform, and therefore it is sufficient to measure the wear amount of only the uppermost seal member 13a.

[0019] 4 and 5, the wear amount measuring device 20 includes a measuring member 21, a holding member 24, and a rod-shaped member 25. In the following description of the wear amount measuring device 20, it is assumed that the longitudinal direction of the rod-shaped member 25 coincides with the up-down direction, and the holding member 24 is located at the lower end of the rod-shaped member 25. As shown in FIGS. 11 and 12, the measuring member 21 is deformed by being pressed against the seal member 13a and the upper mounting metal fitting 14a of the sealing device 10, and the length L of the portions 21C, 21C' that come into contact with the seal member 13a is determined in accordance with the distances L1, L1' between the side plate 3 and the mounting metal fitting 14a (14aa). 21C ,L 21C ' is what changes.

[0020] The measuring member 21 is composed of multiple plastic or metal wires extending in the vertical direction, and each wire is held by a first holding member 22 (described later) of the holding member 24 so as to be slidable in the vertical direction. As shown in FIGS. 8(a) and 8(b), each wire of the measuring member 21 is held by the first holding member 22 so as to be movable between a first position (initial state) in which the lower end surface 21b of the measuring member 21 protrudes a distance a from the lower end surface 22a of the first holding member 22, and a second position in which the lower end surface 21b of the measuring member 21 protrudes a distance b from the lower end surface 22a of the first holding member 22. FIGS. 8(a) and 8(b) show a state in which the first portion 21A of the measuring member 21 is in the first position and the second portion 21B of the measuring member is in the second position. FIGS. 9(a) and 9(b) show a state in which all portions of the measuring member 21 are in the first position. In the measuring member 21, all the wires have the same length, and when all the wires are aligned vertically, the measuring member 21 is a rectangular parallelepiped.

[0021] The holding member 24 holds the measuring member 21, and as shown in Figures 4 and 5, it includes a first holding member 22 and a second holding member 23. The first holding member 22 is a rectangular parallelepiped resin member, and holds each wire of the measuring member 21 so that it can slide freely in the vertical direction. The second holding member 23 includes an end plate 23a, a first flat plate 23b, and a second flat plate 23c. The end plate 23a is a rectangular steel plate extending in the left-right and front-rear directions and having a predetermined thickness in the up-down direction. As shown in FIG. 4, the first flat plate 23b is a rectangular steel plate extending in the up-down and left-right directions and having a predetermined thickness in the front-rear direction, and as shown in FIG. 5, it is attached to the front end of the end plate 23a. The first flat plate 23b has an opening 23d formed therein that allows movement of a rod-shaped portion 28a of a shape restoring member 28, which will be described later. The second flat plate 23c is a rectangular steel plate extending in the up-down and left-right directions and having a predetermined thickness in the front-rear direction, and as shown in FIG. 5, it is attached to the rear end of the end plate 23a. The left-right lengths of the first flat plate 23b and the second flat plate 23c are the same as the left-right length of the end plate 23a, and the first flat plate 23b, the end plate 23a, and the second flat plate 23c are attached so that their left end faces 24a (see FIG. 4) are flush with each other, and their right end faces are flush with each other. The second holding member 23 holds the first holding member 22 by sandwiching it between the first flat plate 23b and the second flat plate 23c from the front and back, and the end plate 23a, the first flat plate 23b, and the second flat plate 23c form a space in which the linear members of the measuring member 21 can move up and down.

[0022] 4, 11 and 12, the first flat plate 23b of the second holding member 23 has portions 21C and 21C' of length L 21C ,L 21C The scale 30 is formed so as to extend elongatedly in the left-right direction, and is attached to the lower edge of the first flat plate 23b. The left end surface 24a of the second holding member 23 constituting the holding member 24 is lowered along the side plate 3 of the gas holder 1 when measuring the amount of wear of the sealing member 13a using the wear amount measuring device 20, as shown in Figures 10 to 12.

[0023] The rod-shaped member 25 includes a first rod-shaped member 25a and a second rod-shaped member 25b. The first rod-shaped member 25a is a rectangular tubular steel member that extends in the same longitudinal direction as the up-down direction, and its lower end is attached to the end plate 23a of the second holding member 23. As shown in FIGS. 4 and 5, the first rod-shaped member 25a is provided with a grip 25e that is held by an operator when measuring the amount of wear of the sealing member 13a using the wear amount measuring device 20. The grip 25e is treated to have an anti-slip property, and is formed, for example, from an anti-slip tape that is wound around the outer periphery of the first rod-shaped member 25a.

[0024] In addition, as shown in Figures 4 and 5, a fall prevention wire 27 that can be wrapped around the wrist of an operator when measuring the wear amount of the sealing member 13a using the wear amount measuring device 20 is attached to the first rod-shaped member 25a by an attachment member 25d. 4 to 6, the second rod-shaped member 25b is a rectangular steel member that extends in the same longitudinal direction as the vertical direction and is arranged so as to be movable up and down within the first rod-shaped member 25a. The rod-shaped member 25 is extendable (the length of the rod-shaped member 25 can be adjusted) by moving the second rod-shaped member 25b up and down within the first rod-shaped member 25a. In this embodiment, the rod-shaped member 25 is extendable between 1500 mm and 2500 mm. The second rod-shaped member 25b is fastened and fixed by a fixing member 25c attached to the first rod-shaped member 25a, thereby determining its vertical position.

[0025] 4 to 6, a vertical measurement auxiliary bar 26 is provided at the upper end of the second rod-shaped member 25b of the rod-shaped member 25. The vertical measurement auxiliary bar 26 is provided so as to intersect with the longitudinal direction of the second rod-shaped member 25b, so that the left end surface (one end surface) 26a of the vertical measurement auxiliary bar 26 is flush with the left end surfaces (one end surfaces) 24a of the first flat plate 23b, the end plate 23a, and the second flat plate 23c. In this embodiment, the vertical measurement auxiliary bar 26 is provided perpendicular to the longitudinal direction of the second rod-shaped member 25b. As shown in FIG. 10, the left end surface 26a of the vertical measurement auxiliary bar 26 is lowered to follow the side plate 3 of the gas holder 1 when the wear amount of the seal member 13a is measured using the wear amount measuring device 20. When measuring the wear amount of the sealing member 13a using the wear amount measuring device 20, if the left end surface 24a of the second holding member 23 constituting the holding member 24 is simply lowered so as to follow the side plate 3 of the gas holder 1, the measuring member 21 will tilt vertically, which may result in a measurement error. In contrast, when measuring the wear amount of the sealing member 13a using the wear amount measuring device 20, the left end surface 26a of the vertical measurement auxiliary bar 26 is also lowered so as to follow the side plate 3 of the gas holder 1, which prevents the measuring member 21 from tilting vertically and avoids the risk of a measurement error.

[0026] In addition, as shown in Figures 4, 5, 7, 8, 9, 11, and 12, a shape restoration member 28 is attached near the lower end of the first rod-shaped member 25a of the rod-shaped member 25, which restores the shape of the measuring member 21 from the changed state (the state in which the corresponding part of the measuring member 21 has changed) in which the shape has been changed by being pressed against the sealing member 13a and the mounting bracket 14a to the initial state (the state in which all parts of the measuring member 21 are in the first position).

[0027] 4, 5, and 7, the shape restoring member 28 includes a rod-shaped portion 28a supported so as to be movable up and down by a support member 29 fixed to the first rod-shaped member 25a, and a shape restoring bar 28b extending in the left-right direction from the lower end of the rod-shaped portion 28a. As shown in FIGS. 4 and 5, the shape restoring bar 28b is disposed above the measuring member 21 within the space defined by the end plate 23a, first flat plate 23b, and second flat plate 23c of the second holding member 23.

[0028] When the shape restoring member 28 is operated, the rod-shaped portion 28a is moved downward, and the shape restoring bar 28b also moves downward, pressing downward the measuring member 21. This allows the measuring member 21 to be moved from a state in which the measuring member 21 is in the second position (FIGS. 8(a) and (b) show a state in which the second portion 21B of the measuring member 21 is in the second position) to a state in which the measuring member 21 is in the first position (FIGS. 9(a) and (b) show a state in which all portions of the measuring member 21 are in the first position).

[0029] The upper end surface 21a of the measuring member 21 is formed with a notch 21c against which the shape restoring bar 28b can come into contact. Next, a method for measuring the amount of wear of the seal member 13a using the wear amount measuring device 20 configured as above will be described with reference to Figures 10 to 12. Figure 10 shows how the wear amount of the seal member 13a of the sealing device 10 is measured using the wear amount measuring device 20. Figure 11 shows the state in which the measuring member 21 of the wear amount measuring device 20 is pressed against the seal member 13a and mounting bracket 14a in an initial, unworn state, and then the wear amount measuring device 20 is lifted up. Figure 12 shows the state in which the measuring member 21 of the wear amount measuring device 20 is pressed against the seal member 13a and mounting bracket 14a in a worn state, and then the wear amount measuring device 20 is lifted up.

[0030] First, when measuring the amount of wear of the seal member 13a, an operator attaches the fall prevention wire 27 to his / her wrist above the piston 4 inside the gas holder 1. At this stage, the second rod-shaped member 25b is in a contracted state inside the first rod-shaped member 25a. Next, the operator pushes in the rod-shaped portion 28a of the shape restoring member 28, causing the shape restoring bar 28b to place all parts of the measuring member 21 in the first position (initial state).

[0031] Next, the worker loosens the fixing member 25c, extends the second rod-shaped member 25b, and tightens the fixing member 25c to fix the second rod-shaped member 25b in the extended state. Next, as shown in Figure 10, the operator places the holding member 24 downward and presses the left end surface 26a of the vertical measurement auxiliary bar 26 and the left end surface 24a of the holding member 24 (second holding member 23) that holds the measuring member 21 against the side panel 3 of the gas holder 1, aligning the longitudinal direction of the rod-shaped member 25 with the vertical direction.

[0032] Next, while keeping the left end surface 26a of the vertical measurement auxiliary bar 26 and the left end surface 24a of the holding member 24 (second holding member 23) pressed against the side panel 3, the operator vertically lowers the entire wear amount measuring device 20 as shown in Figure 10, and presses the measuring member 21 against the sealing member 13a and mounting bracket 14a of the sealing device 10 which are in the sealing oil O, as shown in Figures 11 and 12. 11 and 12, measuring member 21 is deformed to conform to surface 13aa of seal member 13a, and first side surface 14aa, first flat surface 14ab, second side surface 14ac, and second flat surface 14ad of mounting bracket 14a. Measuring member 21 is then formed with portions 21C and 21C' that come into contact with surface 13aa of seal member 13a (portions that come into contact with seal member 13a), portions 21D and 21D' that come into contact with first flat surface 14ab of mounting bracket 14a, and portions 21E and 21E' that come into contact with second flat surface 14ad of mounting bracket 14a.

[0033] Here, not only the left end surface 24a of the holding member 24 but also the left end surface 26a of the vertical measurement auxiliary bar 26 is pressed against the side plate 3 to vertically lower the entire wear amount measuring device 20, thereby preventing the measuring member 21 from tilting in the vertical direction and avoiding the risk of measurement errors. Next, the worker lifts up the wear amount measuring device 20. Next, the operator measures the length L of the portions 21C and 21C' of the measuring member 21 that are in contact with the surface 13aa of the sealing member 13a and the first side surface 14aa of the mounting bracket 14a (the portions that are in contact with the sealing member 13a). 21C ,L 21C 'Measure to read 30 on the scale.

[0034] Here, the length L of the portion 21C that contacts the seal member 13a 21C is the length of the portion 21C in contact with the seal member 13a in the initial state without wear, and L is the length of the portion 21C' in contact with the seal member 13a. 21C ' is the length of the portion in contact with the seal member 13a in a worn state. Therefore, the length L 21C to length L 21C By subtracting ', the amount of wear of the seal member 13a can be determined.

[0035] That is, first, the length L of the portion 21C of the measuring member 21 that contacts the sealing member 13a when the sealing member 13a is new is 21C Then, when it is desired to grasp the amount of wear of the seal member 13a, the length L of the portion 21C' of the measuring member 21 that contacts the seal member 13a is measured. 21C Measure the length L' 21C to length L 21C By subtracting ', the amount of wear of the seal member 13a can be determined.

[0036] In the initial state where the seal member 13a is not worn, the distance between the side plate 3 and the mounting bracket 14a is L1. When the seal member 13a is worn, the pressing force of the pressing mechanism 7 moves the mounting bracket 14a closer to the side plate 3, and the distance between the side plate 3 and the mounting bracket 14a becomes L1', which is shorter. Accordingly, the length L of the portion 21C in contact with the seal member 13a 21C The length L of the portion 21C' that contacts the seal member 13a 21C Therefore, the length L of the portions 21C, 21C' that come into contact with the sealing member 13a is shortened according to the distances L1, L1' between the side plate 3 and the mounting bracket 14a. 21C ,L21C ' changes. In Fig. 11 and Fig. 12, L 21D , L 21D ' is the length of the portions 21D, 21D' of the measuring member 21 that contact the first flat surface 14ab of the mounting fixture 14a, L 21E , L 21E ' is the length of the portion 21E, 21E' of the measuring member 21 that contacts the second flat surface 14ad of the mounting fixture 14a, L 21 , L 21 ' is the overall length (left and right direction) of the measuring member 21. The overall length (left and right direction) of the measuring member 21, L 21 , L 21 ' does not change.

[0037] In this way, according to the wear amount measuring device 20 of this embodiment, the shape is deformed by being pressed against the seal member 13a and the mounting metal fitting 14a, and the length L of the portions 21C, 21C' that contact the seal member 13a is changed depending on the distances L1, L1' between the side plate 3 and the mounting metal fitting 14a. 21C ,L 21C The wear amount measuring device 20 is equipped with a measuring member 21 whose length changes. The wear amount measuring device 20 also includes a holding member 24 that holds the measuring member 21, and a rod-shaped member 25 having one end attached to the holding member 24 and the other end to which a vertical measurement auxiliary bar 26 is attached. The vertical measurement auxiliary bar 26 is arranged to intersect with the longitudinal direction of the rod-shaped member 25 so that one end surface 26a of the vertical measurement auxiliary bar 26 is flush with one end surface 24a of the holding member 24.

[0038] This allows an operator to measure the amount of wear of the seal member 13a in the seal oil O from above the piston 4, and the amount of wear of the seal member 13a can be accurately measured without having to stop operation of the gas holder 1 and temporarily transfer the gas G to another holder, or remove the seal oil O, without having to remove the seal members 13a to 13d. Furthermore, when measuring the amount of wear of the seal member 13a, there is no need to install equipment such as a permanent magnet or a magnetic force detector, and the amount of wear of the seal member 13a can be measured accurately, simply, and easily.

[0039] Furthermore, a vertical measurement auxiliary bar 26 is provided that is arranged to intersect with the longitudinal direction of the rod-shaped member 25 so that one end face 26a of the vertical measurement auxiliary bar 26 is flush with one end face 24a of the holding member 24. As a result, by pressing not only one end face 24a of the holding member 24 but also one end face 26a of the vertical measurement auxiliary bar 26 against the side plate 3 of the gas holder 1 and vertically lowering the entire wear amount measuring device 20, it is possible to prevent the measuring member 21 from tilting in the up-down direction and to avoid the risk of measurement errors.

[0040] Furthermore, according to the wear amount measuring device 20 of this embodiment, a shape restoring member 28 is attached to the rod-shaped member 25, which returns the shape of the measuring member 21 to its initial state from the changed state in which the shape is changed by being pressed against the sealing member 13a and the mounting bracket 14a. As a result, the shape of the measuring member 21 can be returned to its initial state by the shape restoration member 28 from the changed state in which it is pressed against the sealing member 13a and the mounting bracket 14a, so that the wear amount of the sealing member 13a can be measured any number of times using the wear amount measuring device 20.

[0041] Furthermore, because the rod-shaped member 25 is configured to be extendable, when the wear amount measuring device 20 is not in use, the rod-shaped member 25 can be kept in a contracted state, allowing the wear amount measuring device 20 to be stored in a compact state. Then, when the wear amount measuring device 20 is to be used, the rod-shaped member 25 can be extended to measure the amount of wear of the seal member 13a. Furthermore, according to the wear amount measuring device 20 of this embodiment, a drop prevention wire 27 that can be wrapped around the wrist of an operator is attached to the rod-shaped member 25. This prevents the wear amount measuring device 20 from dropping when the operator uses the wear amount measuring device 20 to measure the amount of wear of the seal member 13a from above the piston 4.

[0042] Furthermore, according to the wear amount measuring device 20 of this embodiment, the holding member 24 has a length L of the portions 21C, 21C′ of the measuring member 21 that contact the sealing member 13a. 21C ,L 21CThe scale 30 is provided to measure the length L of the portion 21C, 21C' of the measuring member 21 that contacts the sealing member 13a. 21C ,L 21C By measuring the wear amount of the seal member 13a, the wear amount of the seal member 13a can be determined.

[0043] Although the embodiment of the present invention has been described above, the present invention is not limited to this and various modifications and improvements can be made. For example, it is not always necessary to attach the shape restoring member 28 to the rod-shaped member 25 . Furthermore, the rod-shaped member 25 does not necessarily need to be configured to be extendable and contractible. Furthermore, it is not always necessary to attach the fall prevention wire 27 to the rod-shaped member 25 .

[0044] Furthermore, it is not always necessary to provide the scale 30 on the holding member 24 . Furthermore, the vertical measurement auxiliary bar 26 is not limited to being arranged perpendicular to the longitudinal direction of the second rod-shaped member 25b, but may be arranged at an angle to the longitudinal direction of the second rod-shaped member 25b, as long as the left end surface (one end surface) 26a of the vertical measurement auxiliary bar 26 is flush with the left end surfaces (one end surfaces) 24a of the first flat plate 23b, the end plate 23a, and the second flat plate 23c.

[0045] Furthermore, the number of sealing members 13a to 13d is four in this embodiment, but may be one or any number other than four. [Example]

[0046] By measuring the wear amount of the seal member 13a from above the piston 4 using the wear amount measuring device 20 shown in Figs. 4 and 5, it is not necessary to stop the operation of the gas holder 1, and it is possible to measure the wear amount of the seal member 13a from above the piston 4 without stopping the operation of the gas holder 1 and to measure the wear amount of the seal member 13a from above the piston 4. 3 The work time for degassing and gas-filling (gas filling) was 0 hours, and the work time for measuring the amount of wear was 3 hours (3 people x 1 hour). Furthermore, since no degassing or gas venting work was required, measurements could be performed safely without workers being exposed to CO contained in the fuel gas.

[0047] Furthermore, since there is no need to install devices such as permanent magnets or magnetic detectors, and no facility modification is required, there are no costs for installing such devices or modifying the facility. On the other hand, when the wear amount of the seal member 13a is measured by the conventional method without using the wear amount measuring device 20 shown in FIGS. 4 and 5, the operation of the gas holder 1 must be stopped, and the gas emission is 2.4 million Nm 3 The work time for degassing and gas-filling (gas filling) was 144 hours (6 people x 24 hours), and the work time for measuring the amount of wear was 6 hours (6 people x 1 hour). [Explanation of symbols]

[0048] 1 gas holder 2 base pillars 3 Side Panel 4 pistons 4a Outer periphery 5. Roof 6 Bottom plate 7 Pressing mechanism 7a Support member 7b Link 1 7c Counterweight 7d Second Link 7e Swinging member 7F 3rd Link 10 Sealing device 11 Mounting plate 12 Annular plate 13a to 13d sealing members 13aa surface 14a Mounting bracket 14aa First side 14ab 1st plane 14ac 2nd side 14ad 2nd plane 14b Mounting bracket 15 volts 16 Nut 20 Wear measurement device 21 Measuring member 21a Top end surface 21b Lower end surface 21c notch 21A Part 1 21B 2nd part 21C, 21C' Parts that come into contact with the sealing member 21D, 21D' Part that contacts the first plane of the mounting bracket 21E, 21E' Part that contacts the second flat surface of the mounting bracket 22 first holding member 23 Second holding member 23a End plate 23b 1st plate 23c 2nd plate 24 Retaining member 24a Left end surface (one end surface) 25 Rod-shaped member 25a First rod-shaped member 25b second rod-shaped member 25c Fixing member 25d Mounting material 25e Grip 26 Vertical measurement aid bar 26a Left end surface (one end surface) 27 Fall prevention wire 28 Shape-recovery member 28a Rod-shaped part 28b Shape recovery bar 29 Support member 30 scales O Seal oil G Gas

Claims

1. A seal device for maintaining airtightness between an outer periphery of a piston that moves up and down along a side plate of a gas holder according to the amount of gas stored therein and the side plate, the seal device comprising a seal member that is pressed against the side plate to seal between the outer periphery of the piston and the side plate, and a mounting fixture that attaches the seal member to the outer periphery of the piston, the seal device being used to measure the amount of wear of the seal member in the seal device, a measuring member that is pressed against the sealing member and the mounting fixture and that deforms in shape, and the length of the portion that contacts the sealing member changes depending on the distance between the side plate and the mounting fixture; a holding member for holding the measuring member; a rod-shaped member having one end attached to the holding member and the other end provided with a vertical measurement auxiliary bar; The wear amount measuring device is characterized in that the vertical measurement auxiliary bar is arranged to intersect with the longitudinal direction of the rod-shaped member so that one end face of the vertical measurement auxiliary bar is flush with one end face of the holding member.

2. 2. The wear amount measuring device according to claim 1, wherein a shape restoring member is attached to the rod-shaped member, which restores the shape of the measuring member to its initial state from a changed state in which the measuring member is pressed against the sealing member and the mounting bracket.

3. 2. The wear amount measuring device according to claim 1, wherein the rod-shaped member is extendable and retractable.

4. 2. The wear measuring device according to claim 1, wherein the rod-shaped member is provided with a fall prevention wire that can be wrapped around a worker's wrist.

5. 2. The wear amount measuring device according to claim 1, wherein the holding member is provided with a scale for measuring the length of the portion of the measuring member that contacts the sealing member.

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