JP2012091241A - Vent plug depressurizing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool capable of performing safe depressurization by loosening a vent plug attached to a lead pipe or a transmitter.SOLUTION: The tool 11 performs depressurization through a depressurizing hole on a top face of a head by rotating the hexagonal head of a screw valve of the vent plug in a loosening direction, and includes a cylindrical body 12, a socket 13 attached to one of ends of the cylindrical body 12 and engaged with the hexagonal head, and a handle 15 for rotational operation attached to the cylindrical body 12. The socket 13 has communication passages 13c and 13b for leading a jet fluid from the depressurizing hole into the cylindrical body 12, and the other end of the cylindrical body 12 forms an outlet of the jet fluid. In addition, a socket 14 with a different size is also attached to the other end side of the cylindrical body 12.

Description

  The present invention relates to a vent plug pressure release tool that is used when pressure relief is performed by loosening a vent plug attached to a pressure guiding tube or a transmitter.

In various plants, it is necessary to measure the pressure at each location in order to appropriately manage the operation, and a pressure transmitter is installed at the tip of the pressure guiding tube drawn from the location to be measured. It is necessary to release the pressure when checking these pressure guiding tubes and transmitters.
The vent plug is attached to a pressure guiding tube or a transmitter, and is a plug (plug) for depressurizing actual liquid or actual gas.

Conventionally, a monkey wrench or a socket wrench has been used to open the vent plug to bring the pressure guiding tube and the transmitter to atmospheric pressure.
Further, in Patent Document 1, a plastic bottle-type cover member that covers the engaging portion is provided on the socket wrench so that the liquid or gas blown when the drain cap or the like is opened is received and protected by the inner surface of the cover member. Things have been proposed.

JP 2005-125434 A

  However, if a monkey wrench or socket wrench is used to open the vent plug and bring the pressure guiding tube and transmitter to atmospheric pressure, depending on the working posture, the actual liquid or Real gas may be scattered.

  Further, as described in Patent Document 1, when the liquid or gas to be blown out is received and reflected by the cover member, the liquid or gas whose direction is changed by the cover member may be scattered in an unexpected direction. is there. Moreover, the size of the tool is increased by the amount of the cover member, which is inconvenient for carrying and handling.

  In view of such a situation, it is an object of the present invention to provide a vent plug pressure relief tool that can safely perform pressure relief by loosening a vent plug.

In order to solve the above-described problems, the present invention provides a vent plug depressurization in which a hexagonal head of a screw valve of a vent plug is rotated in a loosening direction to depressurize from a depressurization hole on the top surface of the head Providing tools,
The vent plug pressure release tool includes a cylindrical main body, a socket that is attached to one end of the cylindrical main body and engages with the hexagonal head, and a rotation operation that is attached to the cylindrical main body. A handle, and
The socket has a communication path that guides the fluid ejected from the pressure release hole (actual liquid or real gas) into the cylindrical body,
The other end portion of the cylindrical main body forms a discharge port for the ejection fluid.

  According to the present invention, the socket at one end of the cylindrical main body is attached to the vent plug, and the cylindrical main body is rotated by the handle, so that the vent plug can be loosened and depressurized. The liquid or the actual gas is guided by the cylindrical main body and ejected from the other end of the cylindrical main body. Therefore, the cylindrical main body can be simply guided and ejected to a place where there is no operator without changing the ejection direction of the actual liquid or the actual gas at the time of depressurization. For this reason, there is an effect that it is possible to safely depressurize the actual liquid or the actual gas without scattering the exposed liquid or the actual gas to an exposed portion such as the operator's face.

Sectional drawing of the vent plug pressure release tool which shows one Embodiment of this invention Left side view of vent plug pressure release tool Front view and left and right side views of the first socket in FIG. Front view and left and right side views of the second socket in FIG. Cross section of vent plug Right side view of vent plug Sectional view showing the usage state of vent plug pressure release tool

Hereinafter, embodiments of the present invention will be described in detail.
A vent plug pressure release tool according to an embodiment of the present invention is shown in FIGS. 1 and 2, and prior to the description thereof, an operation target vent plug in the present embodiment will be described with reference to FIGS. 5 and 6.

FIG. 5 is a sectional view of the vent plug, and FIG. 6 is a right side view thereof.
The vent plug 1 is attached to a pressure guiding tube or a transmitter (not shown), and includes a plug body 2 and a screw valve 6.

  The plug body 2 has a communication passage 3 that communicates with a pressure guiding tube and a transmitter (not shown) at one end and opens at the other end. And in the intermediate part of the communicating path 3, it has the valve-seat part 4 formed as a small diameter part, and has the internal thread part 5 in the opening side (large diameter part side) of the communicating path 3.

  The screw valve 6 includes a screw portion 7 screwed into the female screw portion 5 of the plug body 2, a needle portion 8 provided on the distal end side of the screw portion 7 and facing the valve seat portion 4, and a base of the screw portion 7. It has a hexagonal head 9 provided on the end side, and a pressure release hole 10 that opens from the side on the proximal end side of the needle portion 8 to the top surface of the head 9 through the screw portion 7.

Therefore, the communication passage 3 can be closed by rotating the screw valve 6 in the tightening direction and pressing the needle portion 8 against the valve seat portion 4 of the plug body 2.
Conversely, by rotating the screw valve 6 in the loosening direction to separate the needle portion 8 from the valve seat portion 4, the actual liquid or the actual gas in the communication path 3 is exchanged between the valve seat portion 4 and the needle portion 8. From the pressure release hole 10.

  In addition, about the size (two-surface width S in FIG. 6) of the hexagonal head 9 of the screw plug 6 of the vent plug 1, there are several types, for example, 8 mm, 14 mm, and 19 mm.

In this embodiment, a vent plug pressure release tool used for the pressure release operation of the vent plug of FIGS. 5 and 6 will be described with reference to FIGS.
FIG. 1 is a sectional view of a vent plug pressure release tool, and FIG. 2 is a left side view thereof.

  The vent plug depressurizing tool 11 includes a cylindrical main body 12, a first socket 13 attached to one end of the cylindrical main body 12, a second socket 14 attached to the other end of the cylindrical main body 12, and a cylinder. And a handle 15 for turning operation that is attached to the outer side in the radial direction of the main body 12.

  The cylindrical main body 12 is, for example, a SUS cylinder (pipe) having an outer diameter of 27 mm, a wall thickness of 2 mm, and a length of about 150 mm.

The first socket 13 and the second socket 14 are sockets that are engaged with the hexagonal head 9 of the screw valve 6 of the vent plug 1.
Here, as the 1st socket 13 and the 2nd socket 14, the socket (plug angle 12.7mm) for commercial socket wrench as shown in FIG.3 and FIG.4 is used. The first socket 13 and the second socket 14 are different in size (width across flats), for example, the first socket 13 is S1 = 14 mm, and the second socket 14 is S2 = 8 mm.

Accordingly, the first socket 13 has a twelve-square engaging portion 13a that engages with a hexagonal head on one end side, and a concave section 13b having a rectangular cross section called an insertion angle on the other end. The engaging part 13a and the recessed part 13b are connected by the communicating part 13c (see FIG. 3).
The second socket 14 is the same, and has a twelve-square engaging portion 14a that engages with a hexagonal head on one end side, and a concave section 14b having a rectangular cross section called an insertion angle on the other end. The engaging portion 14a and the recessed portion 14b are connected by a communicating portion 14c (see FIG. 4).

  The first socket 13 is attached to the cylindrical main body 12 by inserting and arranging the first socket 13 in one end of the cylindrical main body 12 and welding the black-coated portion in FIG. is there. The mounting of the second socket 14 to the cylindrical main body 12 is the same. By inserting the second socket 14 into the other end of the cylindrical main body 12 and welding the entire black portion in FIG. It ’s stuck. Here, both end portions of the cylindrical main body 12 protrude in the axial direction from the first and second sockets 13 and 14 (projection length d = about 15 mm), and the projecting portion is the outer periphery of the plug body 2 of the vent plug 1. (See FIG. 7).

  The handle 15 is a round bar that protrudes radially outward from the outer peripheral portion of the cylindrical main body 12 and has a distal end bent in an L shape. In addition, the cylindrical main body 12 and the handle | steering-wheel 15 are adhere | attached by welding the black coating part in FIG.1 and FIG.2 over the perimeter. The handle 15 may have any shape as long as it is easy to turn the cylindrical body 12 around its axis.

Next, the usage method of the vent plug pressure release tool 11 of this embodiment is demonstrated.
The operation is performed after selecting a socket, for example, the first socket 13, that is suitable for the size (two-surface width S) of the head 9 of the screw plug 6 of the vent plug 1 that performs the depressurization operation.

  As shown in FIG. 7, the tubular body 12 of the vent plug pressure release tool 11 is put on the plug body 2 of the vent plug 1, and the head 9 of the screw valve 6 of the vent plug 1 is covered with the vent plug pressure release tool 11. The first socket 13 in the cylindrical main body 12 is engaged.

  From this state, by holding the handle 15 and rotating the cylindrical body 12 about its axis, the screw plug 6 of the vent plug 1 is rotated in the loosening direction via the first socket 13.

  Thereby, the needle part 8 of the screw valve 6 can be separated from the valve seat part 4, and the actual liquid or the actual gas in the communication path 3 is passed between the valve seat part 4 and the needle part 8 from the pressure release hole 10. Can be ejected.

  Then, the actual liquid or the actual gas ejected from the pressure release hole 10 of the vent plug 1 flows into the cylindrical main body 12 through the communication portion 13c and the concave portion 13b of the first socket 13, and thereafter, the second socket 14 It flows out from the other end of the cylindrical main body 12 through the recess 14b, the communication portion 14c, and the engagement portion 14a. That is, the first socket 13 (and the second socket 14) has a communication path (communication path 13c, recess 13b, etc.) that guides the fluid ejected from the pressure release hole 10 into the cylindrical body 12. An end portion on the opposite side of 12 forms a discharge port for the ejection fluid.

Therefore, the cylindrical main body 12 is simply guided without changing the jet direction of the real liquid or real gas at the time of depressurization, and jets the real liquid or real gas to a place where there is no worker. It is possible to safely depressurize without scattering to the exposed part.
Further, since the cylindrical main body 12 serves both as a torque transmission function and a cover function, the tool can be configured compactly, and is convenient to carry and handle, and has good workability.

  Further, according to the present embodiment, since the first and second sockets 13 and 14 having different sizes are provided at both ends of the cylindrical main body 12, it is possible to cope with the vent plugs having different sizes by simply changing the direction. Can be done easily.

  Further, according to the present embodiment, the cylindrical main body 12 protrudes in the axial direction from the first and second sockets 13 and 14, and the protruding portion covers the outer periphery of the plug body 2 of the vent plug 1. It is possible to prevent leakage of the cylindrical main body 12 in directions other than the cylindrical direction. However, the first and second sockets 13 and 14 may be provided so as to partially protrude from the cylindrical main body 12.

The illustrated embodiments are merely examples of the present invention, and the present invention is not limited to those directly described by the described embodiments, and various improvements and modifications made by those skilled in the art within the scope of the claims. Needless to say, it encompasses changes.
For example, as the socket (engagement portion 13a), a twelve-sided one is shown, but it goes without saying that a hexagonal one may be used.

The same applies to the combinations of the socket sizes at both ends of the cylindrical main body 12 and can be changed to various combinations.
Further, a part of the cylindrical main body 12 may be made transparent so long as there is no hindrance to torque transmission so that the engagement state and the like can be confirmed.

DESCRIPTION OF SYMBOLS 1 Vent plug 2 Plug body 3 Communication path 4 Valve seat part 5 Female thread part 6 Screw valve 7 Screw part 8 Needle part 9 Head 10 Pressure release hole 11 Vent plug pressure release tool 12 Cylindrical main body 13 1st socket 13a Engagement Part 13b Concave part (insertion angle)
13c Communication part 14 2nd socket 14a Engagement part 14b Recessed part (insertion angle)
14c Communication part 15 Handle

Claims (3)

A vent plug depressurization tool for performing pressure relief from the pressure relief hole on the top surface of the head by loosening the hexagonal head of the screw valve of the vent plug in a loosening direction.
A tubular body;
A socket attached to one end of the cylindrical body and engaged with the hexagonal head;
A handle for rotation operation attached to the cylindrical main body,
Comprising
The socket has a communication path that guides the fluid ejected from the pressure release hole into the cylindrical body,
The vent plug depressurization tool, wherein the other end of the cylindrical main body forms a discharge port for the ejection fluid.   The vent plug depressurization tool according to claim 1, wherein the sockets are respectively provided at both ends of the cylindrical main body and have different sizes.   The vent plug pressure relief according to claim 1 or 2, wherein the cylindrical main body projects in an axial direction from the socket, and the projecting portion covers an outer periphery of the plug body of the vent plug. tool.

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