JP5736484B1 - Aviation fuel test vessel and lid - Google Patents

Abstract

An object of the present invention is to provide a test container which is easy to attach a lid, has sufficient sealing properties and fitting strength, and prevents leakage and scattering of aviation fuel oil and displacement of the lid. A test container for inspecting the presence or absence of impurities in aviation fuel oil includes a sample jar 1 having a bottomed cylindrical container part 2 and a lid that is detachably fitted to the container part 2. The lid body 5 includes a disc-shaped flange portion 6 and a knob portion 7 that protrudes from the upper surface of the flange portion 6 and includes a communication passage W that penetrates in the vertical direction near the center thereof. The fitting portion 8 protrudes from the lower surface of the flange portion 6 and has a groove formed over the entire outer periphery thereof, and the inner peripheral end 9a side is inserted into the groove of the outer periphery surface of the fitting portion 8. And a packing 9 in which one or more through holes 91 are formed in a region exposed from the concave groove. [Selection] Figure 5

Description

  The present invention relates to a test container for inspecting the presence or absence of contaminants in aviation fuel oil, and a lid constituting the test container.

  Jet aircraft require high quality aviation fuel oil to achieve optimal navigation of the turbine and safe navigation. Therefore, in order to ensure the quality of aviation fuel oil strictly, on site, a part of the aviation fuel oil is extracted as a sample to inspect that no impurities are contained.

  For such inspection of aviation fuel oil, a test method defined in JIS K2276 is adopted. Specifically, after putting a sample of aviation fuel oil in a transparent glass container called a sample jar and capping it, turn the sample jar in a horizontal circle by hand to stir the aviation fuel oil. . As a result, a vortex of aviation fuel oil is created near the center of the sample jar, and it is visually confirmed whether impurities are floating in the aviation fuel oil.

Utility Model Registration No. 31715547

  In this aviation fuel inspection operation, in order to more efficiently collect impurities at the center of the vortex, it may be preferable to rotate the sample jar vigorously to form a larger aviation fuel vortex. However, in the conventional case, it cannot be said that the sealing performance and the fitting strength of the lid with respect to the sample jar are sufficiently secured, and when the aviation fuel oil is stirred by vigorously turning the sample jar, There was a problem that aviation fuel oil leaked and scattered from the gap, and the lid body might be displaced. Moreover, the work of attaching the lid to the sample jar was not easy, and it was considered that there was room for improvement.

  The present invention has been made in view of the circumstances as described above, and is a test container for inspecting impurities in aviation fuel oil composed of a sample jar and a lid, and the lid can be easily attached. In addition, the sealing and fitting strength of the lid with respect to the sample jar is sufficiently ensured, and when inspecting impurities in aviation fuel oil, leakage and scattering of aviation fuel oil and displacement of the lid are not possible. It is an object to provide a controlled test container. Another object of the present invention is to provide a lid constituting the test container.

  For example, Patent Document 1 is known as a prior art document related to a sealed container. However, regarding a special test container used for inspection of impurities in aviation fuel oil as described above, related prior art documents are known. No technical literature was found.

  In order to solve the above problems, a test container of the present invention is a test container for inspecting the presence or absence of impurities in aviation fuel oil, and has a bottomed cylindrical container having an opening at the upper end. A disc having an outer diameter larger than the outer diameter of the outer peripheral edge of the upper end of the container portion, the sample jar provided, and a lid body detachably fitted to the container portion of the sample jar. A flange portion that protrudes from the upper surface of the flange portion, a knob portion that includes a communication passage that penetrates in the vertical direction, and an outer diameter that protrudes from the lower surface of the flange portion and is slightly smaller than the inner diameter of the container portion A fitting portion in which a groove is formed over the entire circumference of the outer peripheral surface, a rectangular ring shape, and an inner peripheral end in the groove on the outer peripheral surface of the fitting portion. Part side is inserted and exposed from this groove A packing having one or more through-holes formed in the area, and a communication path that passes vertically in the vicinity of the center of the knob portion or the flange portion and communicates with the space inside the fitting portion, When the body fitting part is inserted inward from the opening of the container part, the vicinity of the outer edge of the flange part of the lid and the upper edge of the upper edge of the container part abut, and the space in the container part is While communicating with the exterior through the said communicating path, the said opening part of the said container part is closed by the said fitting part being fitted inside the said container part via the said packing, It is characterized by the above-mentioned.

  In this test container, when the fitting portion of the lid body is inserted inward from the opening portion of the container portion, the packing has the outer peripheral surface of the fitting portion and the container in a state where the outer peripheral end portion is bent upward. It is preferable to be interposed between the inner peripheral surface of the part.

  A lid of the present invention is a lid that is detachably fitted to a container portion of a sample jar for inspecting the presence or absence of impurities in aviation fuel oil, and includes a disc-shaped flange portion and the flange portion. A knob portion protruding from the upper surface of the flange portion, a cylindrical or columnar shape protruding from the lower surface of the flange portion, and a fitting portion in which a groove is formed on the outer peripheral surface over the entire circumference in the circumferential direction, and a rectangular shape A packing that is ring-shaped and has an inner peripheral end portion inserted into a concave groove on the outer peripheral surface of the fitting portion, and one or more through holes formed in a region exposed from the concave groove; A communication passage that penetrates in the vertical direction near the center of the knob portion or the flange portion and communicates with the space inside the fitting portion.

  According to the test container of the present invention, the lid can be easily attached, and the lid is tightly sealed with respect to the sample jar, and the fitting strength is sufficiently secured. In addition, leakage and scattering of aviation fuel oil and displacement of the lid can be suppressed.

It is the perspective view which illustrated one embodiment of the sample jar in the test container of the present invention. It is the perspective view from the upper part which illustrated one Embodiment of the cover body in the test container of this invention, and the expanded sectional view of the M section. It is the perspective view from the lower side which illustrated one Embodiment of the cover body in the test container of this invention. It is the longitudinal cross-sectional view which illustrated one Embodiment of the cover body in the test container of this invention. It is the perspective view which illustrated one Embodiment of the test container of this invention, and the expanded sectional view of the L section.

  The test container of the present invention is for inspecting the presence or absence of impurities in aviation fuel oil, and includes a sample jar having a bottomed cylindrical container having an opening, and a container of the sample jar. And a lid that is detachably fitted.

  Hereinafter, an embodiment of a test container (sample jar and lid) of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view illustrating an embodiment of a sample jar in a test container of the present invention.

  As illustrated in FIG. 1, the sample jar 1 of the test container includes a bottomed cylindrical container portion 2 having an opening 2 a at the upper end, and the upper end outer peripheral edge 2 b of the container portion 2 faces outward. A spout 3 that projects in a tapered shape is formed. Further, on the outer surface of the container part 2, a vertical arch-shaped handle part 4 is disposed.

  The volume (outer diameter, height) and the like of the container 2 are not particularly limited, and can be appropriately designed according to the amount of aviation fuel oil used as a sample. Moreover, it is preferable that the material of the sample jar 1 is a transparent material which has oil resistance, Specifically, transparent glass etc. can be illustrated, for example.

  FIG. 2 is a perspective view from above illustrating an embodiment of the lid in the test container of the present invention and an enlarged cross-sectional view of the M section, and FIG. 3 is an embodiment of the lid in the test container of the present invention. It is the perspective view from the lower part which illustrated. FIG. 4 is a longitudinal cross-sectional view illustrating an embodiment of the lid in the test container of the present invention.

  As illustrated in FIGS. 2, 3 and 4, the lid 5 of the test container includes a flange portion 6, a knob portion 7, a fitting portion 8, and a packing 9.

  The flange portion 6 has a substantially disk shape, and has an outer diameter larger than the outer diameter of the upper end outer peripheral edge 2 b of the container portion 2 of the sample jar 1. The outer diameter of the flange portion 6 can be appropriately designed according to the outer diameter of the container portion 2 of the sample jar 1. A circular opening 6a is formed at the center of the flange 6 and a female screw is formed inside the circular opening 6a. Further, a circular opening step portion 6b that protrudes one step toward the back surface side is provided around the circular opening portion 6a on the back surface of the flange portion 6.

  The knob portion 7 protrudes from the vicinity of the center of the upper surface of the flange portion 6. Specifically, the knob portion 7 protrudes from a shaft portion 7a rising from the upper surface of the flange portion 6, a substantially disc-shaped head portion 7b formed at the upper end of the shaft portion 7a, and a lower end of the shaft portion 7a. It is comprised by the external thread part 7c. The male screw portion 7c is formed thinner than the shaft portion 7a, and is inserted into and screwed into the circular opening 6a of the flange portion 6. Further, the knob portion 7 is provided with a communication passage W penetrating in the vertical direction near the center of the head portion 7b, the shaft portion 7a, and the male screw portion 7c. The communication path W can be formed with a diameter of about 1 mm to 3 mm, for example.

  The fitting portion 8 is cylindrical and protrudes from the lower surface of the flange portion 6. The fitting portion 8 is designed to have an outer diameter that is smaller than the inner diameter of the container portion 2 of the sample jar 1 (for example, about 1 mm to 5 mm). Although the length of the fitting part 8 below from the flange part 6 is not specifically limited, For example, it can design suitably to the length of about 1/5-1/3 of the length of the container part 2 of the sample jar 1. . The communication path W of the knob portion 7 communicates with the space S inside the fitting portion 8, and the space outside the knob portion 7 and the space S inside the fitting portion 8 communicate with each other. Further, a concave groove 8a is formed in the vicinity of the lower portion of the outer peripheral surface of the fitting portion 8 over the entire circumference in the circumferential direction, and the inner peripheral end 9a side of the packing 9 is inserted into the concave groove 8a. Thus, the packing 9 is disposed in the fitting portion 8. Accordingly, the groove depth and width of the concave groove 8a can be appropriately designed in consideration of the thickness and size of the packing 9, but as a guideline, for example, the groove depth toward the inner side of the concave groove 8a. Preferably, the thickness is in the range of 5 to 10 mm, and the width of the groove 8a is preferably in the range of about 0.5 mm to 2.0 mm. Further, the concave groove 8a may be formed substantially horizontally, or may be formed to be inclined obliquely upward. Examples of the inclination angle of the concave groove 8a include a range of about 0 ° to 10 °. When the concave groove 8a is inclined obliquely upward, the packing 9 is also disposed in an inclined state upward.

  Examples of the material of the flange portion 6, the knob portion 7, and the fitting portion 8 include known thermoplastic resins that are excellent in oil resistance.

  The packing 9 has a rectangular ring shape, and a circular space is formed at the center. That is, the packing 9 is formed in a horizontally long rectangular shape in the shape of a longitudinal section of the annular portion in a horizontally placed state. The material of the packing 9 is a soft material excellent in oil resistance, and examples thereof include various synthetic resins such as fluororesin (rubber). The inner diameter of the packing 9 is designed to have a length that allows the packing 9 to be inserted into the recessed groove 8 a of the fitting portion 8. In the state where the fitting portion 8 is inserted into the circular space in the center of the packing 9, the inner peripheral end 9 a side of the packing 9 is inserted into the concave groove 8 a on the outer peripheral surface of the fitting portion 8. In the state before the lid 5 is inserted into the container 2 of the sample jar 1, the outer peripheral end 9 b side of the packing 9 protrudes outward from the concave groove 8 a of the fitting portion 8 of the lid 5. ing. The packing 9 can also be fixed to the concave groove 8a via an adhesive.

  Although the width | variety (length between the outer peripheral edge part 9b and the inner peripheral edge part 9a) of the annular part of the packing 9 is not specifically limited, For example, the range of about 10 mm-20 mm can be illustrated preferably. Furthermore, a through hole 91 that penetrates in the thickness direction of the packing 9 is formed in the packing 9 at an appropriate position in a region exposed from the concave groove 8a. The number and size of the through-holes 91 can be appropriately designed within a range in which the hermeticity of the container part 2 of the sample jar 1 can be secured. For example, the size of the through-hole 91 has a diameter of 1 to 2 mm. It can be illustrated preferably. Further, the thickness of the packing 9 is not particularly limited, and can be appropriately designed in consideration of the gap between the container portion 2 of the sample jar 1 and the fitting portion 8 of the lid 5 and the flexibility of the packing 9. . Specifically, for example, a range of about 0.5 mm to 2.0 mm can be preferably exemplified.

  FIG. 5 is a perspective view illustrating an embodiment of the test container of the present invention and an enlarged cross-sectional view of the L portion.

  After the aviation fuel oil F is taken out into the container portion 2 of the sample jar 1, the fitting portion 8 portion (the fitting portion 8 and the packing 9) of the lid 5 illustrated in FIGS. 2 and 3 is illustrated in FIG. The sample jar 1 is inserted inward from the opening 2 a of the container 2. At this time, as illustrated in FIG. 5, the outer peripheral end 9 b of the packing 9 protruding from the concave groove 8 a of the fitting portion 8 contacts the inner peripheral surface of the container 2 of the sample jar 1, and the outer peripheral end of the packing 9 The fitting portion 8 is inserted inward of the container portion 2 while the portion 9b side is bent upward. Thereby, the space in the container part 2 and the external space communicate with the knob part 7 through the communication path W. Since the communication passage W is provided in the knob portion 7 and the through hole 91 is provided in the packing 9, the air (pressure) in the container portion 2 can be released from the communication passage W and the through hole 91 to the outside. it can. Therefore, when the fitting part 8 portion of the lid 5 is inserted into the container part 2 of the sample jar 1, the air in the container part 2 is not obstructed, and the fitting part 8 of the lid 5 is smoothly sampled. It can be fitted to the container 2 of the jar 1. Further, when the packing 9 is disposed in a state of being inclined obliquely upward, the force required for insertion into the container 2 is reduced, and rainwater or dust attached to the lid 5 is stored in the container. Falling into the part 2 is suppressed.

  When the fitting portion 8 of the lid body 5 and a predetermined position inside the container portion 2 of the sample jar 1 are inserted to a predetermined position, the vicinity of the outer edge of the flange portion 6 of the lid body 5 and the upper peripheral edge 2b of the container portion 2 are formed. Abut.

  As described above, the test container can smoothly insert the fitting portion 8 of the lid body 5 into the inside of the container portion 2, and the inside of the fitting portion 8 of the lid body 5 and the container portion 2 of the sample jar 1. Since the gap with the peripheral surface is sealed by the packing 9 interposed in an upwardly bent state, for example, even when the inner peripheral surface of the container 2 is not uniform and has a distorted shape, the container 2 with high strength. The opening 2a is securely closed.

  Further, the packing 9 of the lid 5 has the inner peripheral end 9 a side inserted into the recessed groove 8 a on the outer peripheral surface of the fitting portion 8, and the outer peripheral end 9 b side is the entire circumference of the inner peripheral surface of the container portion 2. Abutting over and closely contacting. For this reason, when inspecting the impurities in the aviation fuel oil F, the sample jar 1 is stirred while the handle portion of the sample jar 1 is held by hand to create a vortex of the aviation fuel oil F. The lid 5 is not easily displaced, and leakage and scattering of the aviation fuel oil F from the vicinity of the gap between the container 2 and the packing 9 are suppressed. Further, in a state where the fitting portion 8 of the lid 5 is fitted to the container portion 2 of the sample jar 1, the through hole 91 of the packing 9 is formed on the inner surface of the container portion 2 and the outer peripheral surface of the fitting portion 8. Therefore, leakage of aviation fuel oil F from the through hole 91 is also suppressed.

  Furthermore, since the space S inside the fitting portion 8 communicates with the outside through the communication path W of the knob portion 7, the lid 2 can be easily removed from the sample jar 1 after the inspection is completed.

  Thus, the test container can easily attach the lid 5 to the container 2 of the sample jar 1, and the hermeticity and fitting strength of the lid 5 to the sample jar 1 are ensured. Therefore, even when the sample jar 1 is rotated to stir the aviation fuel oil when inspecting the contaminants in the aviation fuel oil, the aviation fuel oil scattering and the lid body 5 are reliably suppressed.

  The test container of the present invention is not limited to the above embodiment. For example, the communication path may be one that passes vertically in the vicinity of the center of the flange portion and communicates with the space inside the fitting portion. In this case as well, air (pressure) in the container portion is externally transmitted from the communication path. Can escape. A plurality of through holes of the packing can be provided in a region exposed from the groove. In addition, the container part of the sample jar and the fitting part of the lid body do not have to be strictly cylindrical, and may be provided with an inclination whose diameter decreases downward. The knob portion may be integral with the flange portion.

DESCRIPTION OF SYMBOLS 1 Sample jar 2 Container part 2b Upper end outer periphery 5 Cover body 6 Flange part 6a Circular opening part 6b Circular opening step part 7 Knob part 8 Insertion part 8a Groove 9 Packing 9a Inner peripheral surface side 91 Through hole F Aviation fuel oil W Communication path

Claims (3)

A test container for inspecting the presence or absence of impurities in aviation fuel oil,
A sample jar having a bottomed cylindrical container having an opening at the upper end;
A lid that is detachably fitted to the container of the sample jar;
Including
The lid is
A disc-shaped flange portion having an outer diameter larger than the outer diameter of the outer peripheral edge of the upper end of the container portion;
A knob portion protruding from the upper surface of the flange portion;
A cylindrical portion having an outer diameter that protrudes from the lower surface of the flange portion and has an outer diameter that is slightly smaller than the inner diameter of the container portion, and a fitting portion in which a groove is formed over the entire circumference of the outer peripheral surface;
A packing having a rectangular ring shape, the inner peripheral end of which is inserted into a concave groove on the outer peripheral surface of the fitting portion, and one or more through holes formed in a region exposed from the concave groove; ,
A communication path that penetrates in the vertical direction near the center of the knob part or the flange part and communicates with the space inside the fitting part;
With
When the fitting portion of the lid is inserted inward from the opening of the container portion, the vicinity of the outer edge of the flange portion of the lid body comes into contact with the outer periphery of the upper end of the container portion, and the inside of the container portion The space communicates with the outside through the communication path, and the fitting part is fitted inside the container part via the packing, whereby the opening part of the container part is closed. Test container.   When the fitting portion of the lid body is inserted inward from the opening of the container portion, the packing has the outer peripheral surface of the fitting portion and the inner portion of the container portion with the outer peripheral end portion bent upward. The test container according to claim 1, wherein the test container is interposed between the peripheral surface and the peripheral surface. A lid that is detachably fitted to a container portion of a sample jar for inspecting the presence or absence of impurities in aviation fuel oil,
A disc-shaped flange,
A knob portion protruding from the upper surface of the flange portion;
A fitting portion having a cylindrical shape or a columnar shape protruding from the lower surface of the flange portion, and a concave groove formed on the outer peripheral surface over the entire circumference in the circumferential direction;
A packing having a rectangular ring shape, the inner peripheral end of which is inserted into a concave groove on the outer peripheral surface of the fitting portion, and one or more through holes formed in a region exposed from the concave groove; ,
A communication path that penetrates in the vertical direction near the center of the knob part or the flange part and communicates with the space inside the fitting part;
A lid body characterized by comprising:

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