JP2006184067A - Pressure detection plug and its tool set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure detection plug and a tool set for the pressure detection plug for preventing the inside of the plug from being exposed carelessly and preventing working efficiency from decreasing in testing. <P>SOLUTION: An electric outlet adaptor 70 is stored in a storage case 5 of the tool set. Further, a detachable tool 60 is embedded into the opening of the storage case 5. In the detachable tool 60, a circumferential projection 63 at the lower end of a knob section 61 is embedded to a circumferential groove 7 inside the opening of the storage case 5 for mounting, and the knob section 61 also plays a role of the lid of the storage case 5. In this manner, the knob section 61 also plays a role of the lid of the storage case 5, thus dispensing with the lid of the tool set itself. The tool set cannot mount the detachable tool 60 to the storage case 5 while a lid 20 is being sucked to the detachable tool 60, thus for example enabling the lid 20 to be mounted without fail after the lid 20 of the pressure detection plug is removed by using the detachable tool 60 and pressure is detected and air is purged. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pressure detection plug that serves as a connection port for connecting an inspection device when performing pressure detection, air purge, or the like in a gas pipe, and a pressure detection plug that is used when the main body of the pressure detection plug is attached to or detached from the lid. It relates to a tool set.

  A gas pipe installed in a building or the like is provided with a connection port for connecting an inspection device in various tests such as pressure detection and air purge. For example, when a gas meter is installed in a pipeline via a gas meter suspension unit, the connection port is provided at a location on the gas meter downstream side of the suspension unit. This type of connection port generally includes a plug screwed into an opening communicating with the gas flow path, and a hose joint or the like connected to an inspection device is connected to the plug during testing. Inside the plug, a valve that opens and closes according to the attachment / detachment of a hose joint or the like is provided.

As a plug (valve) used for such a gas pipe connection port, for example, “Gas Leakage Inspection Plug” disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 7-333100) or Patent Document 2 (Japanese Patent Publication) There is a “slide valve” disclosed in Japanese Patent Laid-Open No. 8-10031. These are of a type that opens and closes a valve by attaching and detaching a hose joint (socket).
The plug of Patent Document 1 can vary the opening degree of the valve in the plug, and the opening degree at the time of air purge can be made larger than the opening degree at the time of pressure detection. Thereby, it is said that, at the time of air purge, it is possible to obtain an advantage that the flow rate to the inspection device side can be made larger than that at the time of pressure detection, and the working time can be greatly shortened.
The slide valve of Patent Document 2 is improved in the closing performance in the closed state of the valve, and is said to be less likely to cause a valve closing failure caused by galling or dust.

JP 7-333100 A Japanese Patent Publication No.8-10031

  By the way, the plug (valve) used for the connection port of the gas pipe is covered with a protective cap on the outside when not tested (normal time). There are two types of protective caps: one that fits into the tip of the plug (valve) and one that screws onto the outside of the plug (valve). All of them can be easily removed from the plug (valve). Can do. For this reason, the protective cap is inadvertently removed and the inside of the plug (valve) is easily exposed, which may cause gas leakage and the like. On the other hand, if the coupling structure between the plug (valve) and the protective cap is complicated and strengthened, the possibility of causing the aforementioned gas leakage can be reduced, but when removing the protective cap from the plug (valve) during the test It takes time and test workability is reduced. For this reason, there is a need for a gas pipe connection port structure that can prevent inadvertent exposure of the inside of the plug (valve) and does not reduce the workability during the test.

  The present invention has been made to solve such a problem, and can prevent inadvertent exposure of the inside of the plug, and does not reduce workability during the test, and a tool set for the pressure detection plug. The purpose is to provide.

  A first pressure detection plug of the present invention is a pressure detection plug attached to a gas piping member, and includes a hollow main body having a valve seat inside, and a hollow of the main body detachably attached to the main body. A lid for closing, a valve body disposed in the main body, and a biasing member disposed in the main body for biasing the valve body toward the valve seat. A lid engaging portion that engages only with a special tool used when the lid is attached to and detached from the main body, a female screw is formed on the inner peripheral surface of the main body, and the lid A male screw that meshes with the female screw is formed on the outer peripheral surface of the body, the lid engaging portion is formed on a part of the outer peripheral surface of the lid body, and both the screws mesh with each other to form the lid body. The lid engaging portion is placed in the main body when the mounting is completed. And wherein the circle.

  According to this pressure detection plug, since the connection structure between the main body and the lid can be realized by simple screw connection, the lid can be easily removed from the main body by using a special tool when using the pressure detection plug. The workability at the time of testing does not deteriorate. Furthermore, since the lid engaging portion is embedded in the main body when the lid is attached to the main body, a wrench, spanner, or the like cannot be engaged from the outside of the lid. As a result, a person other than an operator having a special tool cannot remove the lid from the main body using a general tool such as a wrench or a spanner, so that the inside of the main body of the pressure detection plug is maliciously exposed. This can be prevented, and the possibility of causing gas leakage or the like can be reduced.

In the first pressure detection plug of the present invention, an O-ring or a packing may be disposed between the valve body and the valve seat.
If the valve body and the valve seat are metal contact seals, the process takes time, but if the elastic body seal such as an O-ring is used, the process time is not required and the cost is reduced. For the pressure detecting plug having the main body according to the present invention, those having a very low use frequency can achieve a sufficient sealing function / effect with an elastic seal.

  A second pressure detecting plug of the present invention is a pressure detecting plug attached to a gas piping member, and includes a hollow main body having a valve seat inside, and a hollow of the main body detachably attached to the main body. A lid for closing, a valve body disposed in the main body, and a biasing member disposed in the main body for biasing the valve body toward the valve seat, An O-ring or packing is disposed between the valve seats.

  The pressure detecting plug tool set of the present invention includes a pressure detecting plug attaching / detaching tool used for attaching / detaching a lid for closing the hollow of the main body to a hollow main body of the pressure detecting plug attached to the gas piping member, When using a pressure plug, a pressure detection plug tool set comprising: a pressure detection plug outlet adapter connected to the main body with the lid removed from the main body; and a bottomed cylindrical storage case. The outlet adapter is housed in the housing case, and the detachable tool is attached to an opening end of the housing case and serves as a lid of the housing case.

  According to this tool set, the detachable tool also serves as the lid of the storage case, so the lid of the tool set itself is not necessary. Furthermore, immediately after removing the removal tool from the storage case by picking it, etc., it is possible to move to the removal work of the pressure detection plug lid without placing the removal tool once, so the work becomes smoother. .

In the pressure detecting plug tool set of the present invention, an adsorption member for adsorbing the lid body is provided on the detachable tool, and the outlet adapter is stored in the state where the lid body is adsorbed to the adsorption member. The size may be set so that the detachable tool cannot be attached to the opening end of the storage case.
In this case, use a detachable tool to remove the pressure plug lid from the pressure plug body, perform pressure detection and air purge, and then forget to attach the pressure plug lid to the pressure plug body again. It becomes easy.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to prevent inadvertent exposure inside a plug, the pressure detection plug and pressure detection plug tool set which do not reduce workability | operativity at the time of a test can be provided.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, a pressure detecting plug according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a cross-sectional view showing a configuration of a pressure detecting plug according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a configuration of the pressure detecting plug.
In the present embodiment, “upper and lower” and “left and right” refer to the upper and lower sides and the left and right in each drawing unless otherwise specified.
1 and 2 includes a main body 11 made of a copper alloy or the like. The main body 11 has a hollow cylindrical shape. A male screw portion 12 is formed on the outer peripheral surface on the lower end side of the main body 11. The male screw portion 12 is screwed into a branch port (plug mounting port) P of a gas piping member such as a gas meter suspension unit. When the pressure detection plug 1 is not used (normal time), the upper end of the main body 11 is covered with a protective cap 2 made of resin or the like.

  The inside of the main body 11 is roughly divided into a lid housing portion 13 opened to the upper end side, a valve chamber portion 15 opened to the lower end side, and an intermediate portion between the lid housing portion 13 and the valve chamber portion 15. 14 and. The inner diameter of the intermediate portion 14 is smaller than the lid housing portion 13 and the valve chamber portion 15. A lid 20 is detachably disposed above the lid housing portion 13 and the intermediate portion 14, and a valve body 30, a coil spring 40, a washer 50, and a stop ring 55 are incorporated in the lower portion of the intermediate portion 14 and the valve chamber portion 15. . The edge of the boundary step portion between the intermediate portion 14 and the valve chamber portion 15 is chamfered, and this chamfer step portion becomes the valve seat 19.

  The lid 20 is made of an iron alloy or the like. A pair of opposed lid engaging portions 21 are formed on the outer peripheral surface of the upper end of the lid 20. Each lid engaging portion 21 is formed by cutting out a part of the outer peripheral surface flatly. Each lid engaging portion 21 is buried inside the upper end of the lid accommodating portion 13 of the main body 11 in a state where the lid 20 is attached to the main body 11 shown in FIG. Each lid engaging portion 21 engages only with a tool engaging portion 66 of a detachable tool 60 (see FIG. 3) described later (see FIG. 6). Therefore, a person other than the operator who has the special tool 60 cannot remove the lid 20 from the main body 11 using a general tool (driver, wrench, spanner, etc.), and the pressure detection plug 1 of the pressure detection plug 1 is maliciously installed. It is possible to prevent the inside of the main body 11 from being exposed.

  A male screw portion 22 is formed in the lower part of the lid engaging portion 21 of the lid 20. The male screw portion 22 meshes with the female screw portion 13 a on the inner surface of the lid housing portion 13 of the main body 11. A step portion 25 is formed below the male screw portion 22 of the lid 20. As shown in FIG. 1, a packing 41 is fitted on the step portion 25. The packing 41 hits the boundary step 18 between the lid housing part 13 and the intermediate part 14 of the main body 11 and seals between the main body 11 and the lid 20. A small shaft portion 27 and a protruding portion 29 at the lower end thereof are formed at the lower portion of the step portion 25 of the lid body 20. The overhang portion 29 is larger than the outer diameter of the small shaft portion 27 and smaller than the inner diameter of the intermediate portion 14 of the main body 11. As shown in FIG. 1, an O-ring 43 is fitted on the small shaft portion 27. The O-ring 43 hits the intermediate portion 14 of the main body 11 and seals between the main body 11 and the lid body 20. The main body 11 and the lid 20 are double-sealed by the packing 41 and the O-ring 43.

  The valve body 30 is made of a copper alloy or the like. The valve body 30 includes a main valve portion 31 on the upper end side and a ring portion 33 on the lower end side connected by a pair of connecting pieces 35. A groove portion 31 a is dug in the outer peripheral surface of the main valve portion 31. As shown in FIG. 1, an O-ring 45 is fitted on the groove 31a. The O-ring 45 seals between the main valve portion 31 of the valve body 30 and the valve seat 19 of the main body 11. When the valve body 30 and the main body 11 are metal contact seals, processing takes a lot of work, but in the case of an elastic body seal such as the O-ring 45 in this embodiment, the processing man-hours are not required and the cost is reduced. As for the pressure detecting plug 1, a very low use frequency can achieve a sufficient sealing function / effect by sealing with the O-ring 45.

  In the main valve portion 31 of the valve body 30, the outer diameter on the upper side of the groove portion 31 a is smaller than the intermediate portion 14 of the main body 11, and the outer diameter on the lower side of the groove portion 31 a is larger than the intermediate portion 14 of the main body 11. A recess 31 b is dug into the bottom surface of the main valve portion 31. The upper end of the coil spring 40 is engaged with the recess 31b. As shown in FIG. 1, in a state where the valve body 30 receives the biasing force of the coil spring 40 (valve closed state), the O-ring 45 hits the valve seat 19 of the main body 11 and the upper end of the main valve portion 31 is the middle of the main body 11. It is arranged in the part 14.

  The washer 50 is made of steel or the like and has a disk shape. A projection 51 is formed at the center of the top surface of the washer 50. In this example, three through holes 53 are formed around the protrusion 51. Each of these through-holes 53 becomes a flow path through which gas or the like flows during pressure detection or air purge. The washer 50 is fixed by a stop ring 55 in a state where the washer 50 is engaged with a step portion 15 a formed on the lower end side in the valve chamber portion 15 of the main body 11. The stop ring 55 is fitted in a groove portion 15b formed on the lower side of the step portion 15a in the valve chamber portion 15. The lower end of the coil spring 40 is engaged with the protrusion 51 of the washer 50. The coil spring 40 is disposed between the main valve portion 31 of the valve body 30 and the washer 51, and urges the valve body 30 toward the upper side (the valve seat 19 side of the main body 11).

Next, the special tool according to the present embodiment will be described with reference to FIG. This special tool 60 is used when the lid 20 is removed from the main body 11 when the pressure detecting plug 1 described above is used, and is reattached after use.
FIG. 3 is a diagram illustrating the special tool according to the present embodiment. (A) is a top view, (B) is a side view (a view taken along arrow B in (A)), (C) is a side view (a view taken along arrow C in (A)), ( (D) is the DD sectional view taken on the line of (A), (E) is a bottom view.

  The special tool 60 shown in FIG. 3 includes a knob 61 made of plastic or the like. In this example, six depressions 61a are formed on the outer peripheral surface of the knob portion 61 at regular intervals. These dents 61a are portions where fingers are applied when holding the special tool 60 by hand. In this example, six punched holes 61 b are formed on the upper surface side of the knob portion 61. Further, a circumferential protrusion 63 is formed on the outer periphery of the lower end of the knob portion 61. The outer diameter of the circumferential protrusion 63 is smaller than the maximum outer diameter of the knob portion 61 (see FIG. 3D). As will be described later with reference to FIG. 9, in the present embodiment, the knob 61 of the special tool 60 also serves as a lid of the tool set, but the circumferential protrusion 63 is provided inside the storage case 5 of the tool set. It plays the role of the latching part latched by.

  A cylindrical tool block 65 made of an iron alloy or the like is embedded on the lower surface side of the knob portion 61. A pair of tool engaging portions 66 are formed at the lower end of the tool block 65. The tool engaging portion 66 engages with the pair of lid engaging portions 21 of the lid 20 described above (see FIG. 6 described later). A magnet (adsorption member) 67 is embedded in the lower surface of the tool block 65. When attaching / removing the lid 20 using the special tool 60, when the tool engaging portion 66 of the tool block 65 is engaged with the lid engaging portion 21 of the lid 20, an iron alloy is produced by the magnet 67. The lid 20 made of or the like is adsorbed to the tool block 65. Therefore, it is not necessary to hold the lid 20 by hand or the like after attaching and removing the lid 20, and the attaching / detaching operation of the lid 20 to the pressure detecting plug 1 can be performed smoothly.

Next, the outlet adapter according to the present embodiment will be described with reference to FIGS. 4 and 5. This outlet adapter is connected to the lid housing portion 13 of the main body 11 with the lid 20 removed from the main body 11 when the above-described pressure detecting plug 1 is used, and an outlet connected to the inspection device is attached. (See FIG. 8 described later).
FIG. 4 is a cross-sectional view of the outlet adapter according to the present embodiment. (A) is a figure which shows the state which the push rod protruded from the base | substrate, (B) is a figure which shows the state in which the push rod was settled in the base | substrate.
FIG. 5 is a view showing a push rod of the outlet adapter. (A) is a plan view, (B) is a front view, and (C) is a side sectional view.

  The outlet adapter 70 shown in FIG. 4 includes a base 71 made of a copper alloy or the like. The base body 71 has a hollow cylindrical shape. A male thread portion (connection portion) 72 is formed on the outer peripheral surface of the lower end of the base 71. The male screw portion 72 meshes with the female screw portion 13 a on the inner surface of the lid housing portion 13 of the main body 11 of the pressure detecting plug 1. An O-ring 73 is fitted on the upper side of the male screw portion 72 of the base 71. On the upper side of the O-ring 73, an overhanging portion 75 projecting outward is formed. A knurling process is applied to the outer peripheral surface of the overhang portion 75. The overhang 75 serves as a knob when the outlet adapter 70 is attached to and detached from the main body 11 of the pressure detection plug 1.

  At the upper end of the base 71, a mounting portion 77 is formed to which an outlet (see FIG. 8 described later) connected to the inspection device is mounted. The mounting portion 77 is formed with a constricted portion 77a that engages with the engagement ball of the outlet. Inside the base 71, an upper end opening 81, a large guide hole 83, and a small guide hole 85 are formed in this order from the top. The inner diameter of the large guide hole 83 is slightly larger than the inner diameters of the upper end opening 81 and the small guide hole 85. A push rod 91 made of plastic or the like is slidably inserted into the large guide hole 83 and the small guide hole 85 and assembled.

  As clearly shown in FIG. 5, the push rod 91 includes a sleeve-like slide portion 93. The inside of the slide portion 93 is divided into three equal parts by three partition walls (ribs) 95. The space between the partition walls 95 in the slide portion 93 serves as a flow path for gas or the like when performing pressure detection, air purge, or the like. A rod-shaped pressing portion 97 extends from the lower end of the slide portion 93. On the other hand, three locking portions 99 are formed at the upper end of the slide portion 93 in this example. The locking portions 99 are formed at regular intervals between the partition walls 95. Each locking portion 99 includes a tongue piece 99b between a pair of slits 99a formed by cutting the upper end of the slide portion 93, and can be slightly deformed inside and outside the slide portion 93. A claw 99c is formed outside the upper end of each tongue piece 99b.

  In the present embodiment, the push rod 91 is assembled from the lower end side of the base 71. That is, when the locking portion 99 side of the push rod 91 is pushed into the small guide hole 85 of the base 71, the claw 99c of the locking portion 99 hits the inner surface of the small guide hole 85, and the tongue piece 99b is slightly deformed inward. The slide portion 93 can be inserted into the small guide hole 85. When the push rod 91 is further pushed in, the locking portion 99 reaches the large guide hole 83 and the tongue piece 99b returns to the outside. In the push rod 91, the claw 99 c of the locking portion 99 hits the boundary step portion 82 between the upper end opening 81 and the large guide hole 83 in the base 71 and the boundary step portion 84 between the large guide hole 83 and the small guide hole 85. Then, it is prevented from falling up and down.

  On the contrary, the push rod 91 can be extracted from the base body 71 by pulling it out from the upper end opening 81 side with the tongue piece 99b deformed inward. As described above, the push rod 91 can be attached to and detached from the base body 71. For example, when the push rod 91 deteriorates with time, the push adapter 91 is replaced and the outlet adapter 70 is replaced. Can continue to be used.

Here, with reference to FIGS. 6-8, the usage method of the above-mentioned pressure detection plug 1, the special tool 60, and the outlet socket adapter 70 is demonstrated.
FIG. 6A is a cross-sectional view for explaining a state in which the lid is removed from the main body of the pressure detecting plug using a special tool, and FIG. 6B is a view after the lid is removed using the special tool. It is a figure which shows the state of.
FIG. 7 is a cross-sectional view showing a state in which the outlet adapter is connected after the lid is removed from the pressure detecting plug.
FIG. 8 is a cross-sectional view showing a state where an outlet is attached to an outlet adapter connected to a pressure detecting plug.

  When the pressure detecting plug 1 is used, first, as shown in FIG. 6A, the protective cap 2 (see FIG. 1) covering the main body 11 of the pressure detecting plug 1 is removed, and the lid 20 is exposed. Then, the knob portion 61 of the special tool 60 is picked, and the tool engaging portion 66 of the special tool 60 is engaged with the lid engaging portion 21 of the lid 20 in the main body 11. Then, when the knob portion 61 of the special tool 60 is turned, the lid 20 also rotates simultaneously by the engagement of both the engaging portions 21 and 66, and the male screw portion 22 of the lid 20 is detached from the female screw portion 13a of the main body 11.

  When the lid 20 is completely removed from the main body 11, the lid 20 is attracted and held by the tool block 65 by the magnet 67 of the special tool 60 as shown in FIG. Therefore, even if the lid body 20 is not held manually, the removed lid body 20 does not fall off from the special tool 60, and the lid body 20 can be removed smoothly. It is also possible to prevent the lid 20 from being lost after being removed. Since the valve body 30 in the main body 11 remains biased upward by the coil spring 40 after the lid 20 is removed from the main body 11, the seal between the valve seat 19 and the O-ring 45 is maintained. This prevents gas in the pipe from leaking out.

  Next, as shown in FIG. 7, the outlet adapter 70 is connected to the main body 11 of the pressure detection plug 1 with the lid 20 removed. The outlet adapter 70 grips the overhanging portion 75 and screws the male screw portion 72 into the female screw portion 13 a on the inner surface of the lid housing portion 13 of the main body 11. A space between the main body 11 and the base 71 of the outlet adapter 70 is sealed with an O-ring 73. At this time, the push rod 91 of the outlet adapter 70 hangs down by its own weight, and the lower end of the pressing portion 97 hits the upper end surface of the main valve portion 31 of the valve body 30, but the force applied from the push rod 91 is larger than the urging force of the coil spring 40. Therefore, the valve body 30 remains urged upward as in the state shown in FIG. 6, and the gas between the pipe and the like is caused by the seal between the valve seat 19 and the O-ring 45. There is no leakage.

  Next, as shown in FIG. 8, the outlet 100 is attached to the attachment portion 77 of the outlet adapter 70 connected to the main body 11 of the pressure detecting plug 1. This outlet 100 is provided at the end of a rubber hose (not shown) connected to an inspection device used for pressure detection, air purge, and the like. For example, Patent Document 2 (Japanese Patent Publication No. 8-10031) described above is used. The thing similar to what is shown by the gazette) can be used.

  The outlet 100 in this example includes a socket (outer sleeve) 101. A mounting port 103 is provided at the end of the socket 101 (the lower end in FIG. 8). An inner sleeve 105 is inserted into the socket 101 and the mounting opening 103. A spring 107 is provided between the socket 101 and the mounting opening 103. An engagement ball 105 a that engages with the constricted portion 77 a of the mounting portion 77 of the outlet adapter 70 is provided near the end of the inner sleeve 105 (the lower end in FIG. 8). Inside the inner sleeve 105, a presser 109 that can come into contact with the upper end of the push rod 91 of the outlet adapter 70 is provided. A rubber hose connected to the inspection device is connected to the base end portion 120 (upper side in FIG. 8) of the outlet 100.

  The socket 101 of the outlet 100 is held, and the mounting opening 103 is brought into contact with the mounting portion 77 of the outlet adapter 70. When the socket 101 is pushed in, the spring 107 contracts and the inner sleeve 105 is pushed in. Then, the engagement ball 105 a is engaged and fixed to the constricted portion 77 a of the mounting portion 77, and the presser 109 hits the push rod 91 and is pushed into the main body 11 of the pressure detecting plug 1. When the push rod 91 is pushed in this way, the push rod 97 pushes the valve body 30, the coil spring 40 is contracted between the valve body 30 and the washer 50, and between the valve seat 19 in the main body 11 and the O-ring 45. Is opened and the valve is opened as shown in FIG. The push rod 91 stops when the claw 99 c of the locking portion 99 hits the boundary stepped portion 84 in the base 71.

  In this way, as indicated by the one-dot chain line in FIG. 8, the flow path communicates from the gas piping member to the inspection device, and pressure detection, air purge, and the like are possible. After the work is finished, when the outlet 100 is removed from the outlet adapter 70, the valve element 30 returns to the state shown in FIG. Then, contrary to the above, the outlet adapter 70 is removed, the special tool 60 is used to attach the lid 20 to the main body 11, and the protective cap 2 (see FIG. 1) is put on.

Next, the tool set according to the present embodiment will be described with reference to FIG.
FIG. 9 is a cross-sectional view showing a tool set according to an embodiment of the present invention.
The tool set shown in FIG. 9 includes a storage case 5 having a bottomed cylindrical shape made of a translucent resin material or the like. The storage case 5 is formed such that the thickness of the bottom side surface is larger than the thickness of the opening side surface. A punched hole 5 a is formed in the bottom of the storage case 5. By passing a string or the like through the punched hole 5a and tying it to an operator's clothes belt or the like, loss of the tool set or the like can be prevented.

  In the storage case 5, the above-described outlet adapter 70 (see FIG. 4) is stored. The outlet adapter 70 is accommodated with the mounting portion 77 facing the bottom of the storage case 5, and the overhang portion 75 hits the step 6 in the storage case 5 and is received. Further, the above-described detachable tool 60 (see FIG. 3) is fitted into the opening of the storage case 5. The detachable tool 60 is attached with a circumferential protrusion 63 at the lower end of the knob 61 fitted into the circumferential groove 7 inside the opening of the storage case 5. In this state, the knob 61 of the detachable tool 60 also serves as the lid of the storage case 5. Thus, since the knob part 61 also serves as the lid of the storage case 5, the lid of the tool set itself becomes unnecessary. Furthermore, immediately after removing the detachable tool 60 from the tool set, it is possible to move to the removal work of the lid 20 of the pressure detecting plug 1 without placing the detachable tool 60 once, so the work is performed more smoothly. Will be able to.

  Further, in the storage state of the tool set shown in FIG. 9, the clearance t between the lower end of the tool block 65 of the detachable tool 60 (the lower end of the tool engaging portion 66) and the end of the outlet adapter 70 in the storage case 5. The dimensions of the storage case 5 are set so that the distance is about 1 to 2 mm. Since the height of the lid 20 is 13 mm with respect to the dimension of the gap t, the detachable tool 60 cannot be attached to the storage case 5 in a state where the lid 20 remains adsorbed to the detachable tool 60. Therefore, it is possible to prevent forgetting to attach the lid 20 to the main body 11 again after removing the lid 20 from the main body 11 of the pressure detecting plug 1 using the detachable tool 60 and performing pressure detection or air purge. it can.

It is sectional drawing which shows the structure of the pressure detection plug which concerns on one embodiment of this invention. It is a disassembled perspective view which shows the structure of the same pressure detection plug. It is a figure which shows the special tool which concerns on this Embodiment. (A) is a top view, (B) is a side view (a view taken along arrow B in (A)), (C) is a side view (a view taken along arrow C in (A)), ( (D) is the DD sectional view taken on the line of (A), (E) is a bottom view. It is sectional drawing of the outlet socket adapter which concerns on this Embodiment. (A) is a figure which shows the state which the push rod protruded from the base | substrate, (B) is a figure which shows the state in which the push rod was settled in the base | substrate. It is a figure which shows the push rod of the outlet socket adapter. (A) is a plan view, (B) is a front view, and (C) is a side sectional view. FIG. 6A is a cross-sectional view for explaining a state in which the lid is removed from the main body of the pressure detecting plug using a special tool, and FIG. 6B is a view after the lid is removed using the special tool. It is a figure which shows the state of. It is sectional drawing which shows the state which connected the outlet adapter after removing a cover body from a pressure detection plug. It is sectional drawing which shows the state which mounted | wore with the outlet socket adapter connected to the pressure detection plug. It is sectional drawing which shows the tool set which concerns on one embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pressure detection plug 5 Storage case 5a Punching hole 7 Circumferential groove 11 Main body 13 Cover body accommodating part 13a Female thread part 14 Intermediate part 15 Valve chamber part 19 Valve seat 20 Lid body 21 Lid body engaging part 22 Male thread part 30 Valve body 31 Main valve part 40 Coil spring 41 Packing 43, 45 O-ring 50 Washer 60 Special tool 61 Knob part 63 Circumferential protrusion 65 Tool block 66 Tool engaging part 67 Magnet 70 Outlet adapter

Claims (5)

A pressure detecting plug attached to a gas piping member,
A hollow body having a valve seat inside;
A lid that is detachably attached to the main body, and closes the hollow of the main body;
A valve body disposed in the body;
A biasing member disposed in the main body for biasing the valve body toward the valve seat;
Comprising
The lid is formed with a lid engaging portion that engages only with a special tool used when the lid is attached to and detached from the main body.
A female screw is formed on the inner peripheral surface of the main body, and a male screw that meshes with the female screw is formed on the outer peripheral surface of the lid,
The lid engaging portion is formed on a part of the outer peripheral surface of the lid,
The pressure detection plug, wherein the lid engaging portion is embedded in the main body when the screws are engaged with each other and the lid is disposed in the main body.   The pressure detecting plug according to claim 1, wherein an O-ring or a packing is disposed between the valve body and the valve seat. A pressure detecting plug attached to a gas piping member,
A hollow body having a valve seat inside;
A lid that is detachably attached to the main body, and closes the hollow of the main body;
A valve body disposed in the body;
A biasing member disposed in the main body for biasing the valve body toward the valve seat;
Comprising
An O-ring or a packing is disposed between the valve body and the valve seat. A pressure detection plug attaching / detaching tool for use in attaching / detaching a lid for closing the hollow of the main body to the hollow main body of the pressure detecting plug attached to the gas piping member;
When using the pressure detection plug, a pressure detection plug outlet adapter connected to the main body with the lid removed from the main body,
A bottomed cylindrical storage case;
A tool set for a pressure detecting plug comprising:
A pressure detecting plug tool set, wherein the outlet adapter is housed in the housing case, and the detachable tool is attached to an opening end of the housing case and serves also as a lid of the housing case. An adsorbing member for adsorbing the lid on the detachable tool is provided,
5. The size is set so that the attaching / detaching tool cannot be attached to an opening end portion of the storage case in which the outlet adapter is stored in a state in which the cover member is sucked to the suction member. Tool set for pressure detection plug.

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