close

Вход

Забыли?

вход по аккаунту

JP2001275181

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2001275181
[0001]
TECHNICAL FIELD The present invention relates to a pressure compensator (accumulator)
mounted on a box immersed in water in a liquid-filled state and expanding / contracting the
substantial internal volume of the box according to the external water pressure.
[0002]
2. Description of the Related Art For example, in a submarine, it is practiced to install, on the
outer wall surface thereof, a box containing an ultrasonic sensor for detecting an obstacle
together with a liquid (oil). Assuming that the box is a completely closed room, the box itself is
deformed due to changes in water depth (water pressure), and the state of the liquid inside
changes, so that correct information can not be obtained. For this reason, a pressure
compensator (accumulator) is required which expands and contracts the substantial internal
volume of the box according to the external water pressure.
[0003]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact
pressure compensator which does not change the size of the external projection which is suitable
for use in such applications.
[0004]
04-05-2019
1
SUMMARY OF THE INVENTION The present invention is a pressure compensator mounted on a
box immersed in water with the liquid filled inside, and expanding / contracting the substantial
internal volume of the box according to the external water pressure, A housing fixed to the body;
an external chamber in communication with the internal chamber communicating with the box
body defined by the piston body having a rolling diaphragm in the housing; and the housing in
the direction of movement of the piston body A guide rod fixed in an outer chamber of the
housing; and at least one intermediate sliding guide body interposed between the guide rod and
the piston body so as to be relatively slidable in the moving direction of the piston body; And
[0005]
Specifically, the housing comprises an upper housing and a lower housing for sandwiching the
peripheral portion of the rolling diaphragm between the two, with the lower housing positioned
on the box side, and the upper housing is in the upper housing. It can be made to project and fix
a guide rod.
[0006]
The pressure compensator of the present invention can be used at least in such a manner that
the box is attached to the outer surface of the submarine and the sensor is housed inside the box
together with the liquid.
[0007]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 5 is a conceptual view of a
state in which a box 13 containing an ultrasonic sensor 11 for detecting an obstacle together
with a liquid (oil) 12 is provided on the outer wall 10 of a submarine. is there.
The outer wall surface of the box 13 is provided with a plurality (four in the drawing) of pressure
compensators 20 according to the present invention for changing the substantial internal volume
of the box 13 according to the water depth (water pressure).
[0008]
1-4 show one embodiment of a pressure compensator 20. As shown in FIG.
04-05-2019
2
A communication hole 14 is formed in the wall surface of the box 13 corresponding to each
pressure compensator 20, and a cylindrical lower housing 21 is fixed on the communication hole
14 by a fixing screw 22.
The lower housing 21 has a communication hole 21 a communicating with the communication
hole 14.
A bottomed cylindrical upper housing 23 is located on the lower housing 21, and a peripheral
bead portion 24 a of the rolling diaphragm 24 is sandwiched between the lower housing 21 and
the upper housing 23. The lower housing 21 and the upper housing 23 are fixed by inserting the
lock ring 25 from the introduction hole formed in the upper housing 23 in the lock ring grooves
25a and 25b (FIG. 4) with the peripheral bead portion 24a sandwiched therebetween. Be done.
The upper housing 23 is provided with a large number of seawater inflow holes 23a.
[0009]
The inside of the housing formed of the lower housing 21 and the upper housing 23 is defined
by the rolling diaphragm 24 into an internal chamber 26 communicating with the inside of the
box 13 and an external chamber 27 communicating with the outside through the seawater inlet
23a. It is done. Along the rolling diaphragm 24 is a piston body 28 located on the side of the
outer chamber 27. This piston body 28 is always on the rolling diaphragm 24 by a compression
spring 29 inserted between the bottom of the upper housing 23 and the piston body 28. It is
biased to move along and in the direction to reduce the volume of the inner chamber 26. The
rolling diaphragm 24 is a known diaphragm having a convolution portion 24b whose bending
direction is reversed between a circular central portion along the piston body 28 and the
peripheral bead portion 24a, and the moving distance of the piston body 28 is increased. The
pressure receiving area is known as a constant (non-varying) diaphragm regardless of the
moving position of the piston body 28.
[0010]
The piston body 28 has a small diameter cylindrical portion 28a extending toward the outer
chamber 27 at the center thereof, while the upper housing 23 has an upper housing 23 coaxial
with the small diameter cylindrical portion 28a at its axial portion. A guide rod 30 projecting
04-05-2019
3
inward is fixed by a fixing screw 31. And, between the small diameter cylindrical portion 28 a
and the guide rod 30, an intermediate sliding cylinder 32 which can slide on both the small
diameter cylindrical portion 28 a and the guide rod 30 is interposed. That is, the intermediate
sliding cylinder 32 has the inner diameter portion in which the guide rod 30 is relatively slidably
fitted, and the outer diameter portion is relatively slidably fitted in the small diameter cylindrical
portion 28 a of the piston body 28. Reference numerals 28 b and 32 b denote slide bearings
respectively provided on the sliding surface of the small diameter cylindrical portion 28 a with
the intermediate sliding cylinder 32 and the sliding surface of the intermediate sliding cylinder
32 with the guide rod 30. An inner flange 32 f and an outer flange 30 f are formed on the
intermediate sliding cylinder 32 and the guide rod 30 for preventing the intermediate sliding
cylinder 32 from falling off from the guide rod 30. The sliding relationship between the slide
bearing 28 b and the guide rod 30 is maintained in the entire movement range of
[0011]
The present pressure compensator 20 having the above-described configuration is fixed to the
wall surface of the box 13, and the inner chamber 26 is filled with the same liquid 12 as the
liquid in the box 13. Now, assuming that the state shown in FIG. 1 is a reference state in which
the pressure in the inner chamber 26 and the resultant pressure of the pressure in the outer
chamber 27 and the spring force of the compression spring 29 are balanced at a specific water
depth, As the pressure decreases, the pressure in the outer chamber 27 decreases, and the piston
body 28 moves toward the guide rod 30 (FIG. 2). Conversely, when the water depth becomes
deeper than the reference state, the pressure in the outer chamber 27 increases. As a result, the
piston body 28 moves to the box 13 side (FIG. 3). While the piston body 28 moves between FIG.
2 and FIG. 3, the intermediate sliding cylinder 32 guides the movement of the piston body 28
while changing the relative position of the guide rod 30 and the small diameter cylindrical
portion 28 a.
[0012]
As described above, in the pressure compensator 20 according to the present embodiment, the
movement of the piston body 28 is interposed not only between the guide rod 30 fixed to the
upper housing 23 but also between the guide rod 30 and the small diameter cylindrical portion
28a. In order to be guided by the intermediate slide cylinder 32, it is possible to obtain a
pressure compensator 20 which is compact and yet has a high ability to absorb changes in the
internal volume of the inner chamber 26, ie, the substantial internal volume of the box 13. In the
present embodiment, the intermediate sliding cylinder 32 is one step, but may be a plurality of
04-05-2019
4
two or more steps.
[0013]
As described above, according to the present invention, the pressure is applied to a box to be
immersed in water with the liquid filled inside, and the pressure to expand and contract the
substantial internal volume of the box according to the external water pressure. As a
compensator, a compact pressure compensator can be obtained in which the size of the
projecting part to the outside does not change.
04-05-2019
5
1/--страниц
Пожаловаться на содержимое документа