JPS5831016Y2 - Piping support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support device for piping through which a fluid of high temperature and large heat capacity flows.

For example, in piping through which a fluid with high temperature and large heat capacity flows, such as piping for transporting the coolant of a fast breeder reactor that uses liquid metal sodium as a coolant, thermal displacement of the piping system and vibrational displacement during earthquakes may occur. A pipe support device for restraining the pipe is provided as shown in FIG. 1A, B, C, and D.

Figures 1A and 1B show a two-way restraint piping support device;
Figures C and D show a pipe support device for one-way restraint.

In each figure, the part names and symbols are common, 1 is piping, 2
3 is a free ball fitted onto the circumferential surface of the piping, 3 is a clamp, and is a fixed body fixed to the 8Vi support I.

The coolant pipe 1 thermally expands or contracts due to changes in coolant temperature during plant operation, but in the conventional pipe support structure, the clamp 3 is rigidly supported by a support fitting (generally referred to as rigid support with a spring constant of 20). It means a supporting metal fitting of ton/mm or more.

That is, the rigidity or spring constant of the support fitting in the restraining direction is 20TOn/rI! If it is greater than or equal to n, it can be said that the pipe is rigidly supported through which a fluid with high temperature and large heat capacity flows.

), it follows this thermal change (for example,
Thermal expansion or contraction in the radial direction of the pipe cross section due to temperature rise or fall of the piping, or conversely, thermal expansion or contraction of the support side due to temperature rise or fall, and in the case of one-way restraint, thermal displacement of the piping system. (1) due to radial displacement and thermal displacement of the piping system, such as axial displacement of the piping, displacement of the piping in the circumferential direction, piping relocation, etc.), the piping may be cut and damaged, or the clearance between the piping and the clamp may be excessively wide and the restraining function cannot be maintained. There was a problem that it was not possible to

The present invention is an attempt to eliminate the drawbacks of the conventional examples as described above, and has developed a piping restraint device that can follow thermal changes in cooling piping, can be rigidly supported and restrained, and can be easily adjusted and installed. This is the purpose of the present invention, and in order to easily follow the thermal expansion of the coolant pipe, the rigid support of the support fitting that directly holds the pipe is separated, making it compact or ramp-shaped.

Furthermore, the support portion of this clamp has a bearing structure that is easy to assemble and adjust during installation.

Furthermore, by combining the shapes of the bearing holes, the same clamp can be used for one-way restraint and two-way restraint.

Next, an embodiment of the present invention will be described in detail with reference to FIGS. 2A, B, and C.

2A is a sectional view taken along line A--A in FIG. 2B, FIG. 2B is a partially sectional plan view, and FIG. 2C is a side view of the oval bearing.

A free ball 2 is installed at the support portion of the pipe 1 connected to a cooling system device (not shown) so as to be slidable in the axial direction and the circumferential direction of the pipe 1, and the free ball 2 is attached to a ball socket clamp 3A, 3B is installed so that it can be moved and slid in the circumferential direction.

Guide rods 3a + 3b are attached to the above clamps 3A and 3B.
+ 3 c + 3 a' s 3 b'
+ 3 c' are protruding respectively, and clamp 3
A and 3B are guide rods 3a, 3a', 3c, 3c
They are mechanically fastened with bolts and nuts 4.4' respectively.

And guide rods 3a, 3b, 3c, 3at3b'
, 3c' are individually mounted to the bearings 5a, 5b, 5c, 5d so as to be slidable in the radial direction of the pipe 1, and are attached to a fixed body 8 provided on the support I, which is not clearly shown. Hsb l 5c t5b is bolt/nut 6
It is installed by

FIGS. 2A and 2B show support devices for two-way restraint.

In the case of one-way restraint, opposing bearings 5a, 5c or 5b
, 5d as an oval bearing 5', as shown in FIG. 2C, so that the guide rod 3 can slide thereon.

First, the effect of the two-way restraint will be explained based on FIGS. 2A and 2B.

For the axial and circumferential displacement and displacement of the pipe 1 (as explained in the thermal change of the pipe), the free ball 2 and the pipe 1,
This is allowed to escape freely by sliding between the clamps 3A and 3B.

Displacement in the radial direction due to thermal displacement of the casing, piping 1, or displacement due to temperature difference between the support body 7 and fixed body 8 is caused by thermal displacement of the free ball 2 and clamps 3A, 3B (due to thermal change of the piping). bearing 5a due to the corresponding thermal displacement).

It is followed using 5b, 5c, and 5d as guides.

Here, the displacement of the pipe 1 in the radial direction of the support body 7 is calculated by the bearings 5a, 5b, 5c, 5d and the guide rod 3a,
3b, 3c, 3a', 3b', 3c'.

Next, unidirectional restraint support will be explained.

The effect of the one-way restraint will be explained in the case where the bearing 5' shown in FIG. 2C is installed as a pair to the bearings 5a, 5c, i or 5b, 5d shown in FIG. 2B.

The axial radius, circumferential displacement, and displacement of the pipe 1 are the same as those explained at the beginning of the two-direction restraint support, and the displacement of the pipe 1 in the direction perpendicular to the pair of bearings 5' is as follows. , guide rods 3a, 3a' and 3c, 3c' (or 3b
and 3b') are followed along bearings 5a and 5c (or 5b and 5d).

For displacement of the pipe 1 in the direction of a pair of bearings 5', bearings 5a and 5c (or 5
b and 5d).

The pipe support device of the present invention includes a pipe 1, a fixed body 8, and a support body 7.
It can absorb the difference in radial displacement of pipe 1 due to temperature difference between
Thermal expansion or contraction in the radial direction of the pipe cross section due to temperature rise or fall of the pipe (on the contrary, thermal expansion or contraction due to temperature rise or fall on the support side), and has a bidirectional or unidirectional restraint function. .

Since it is possible to absorb the difference in displacement of the piping 1 in the radial direction, the piping 1 can be cut without damage or excessive clearance.
Health and function are maintained.

The same clamp 3A, 3 for two-way restraint and one-way restraint
This is made possible by using the bearings 5a, 5b, 5c, 5d and the bearing 5' depending on the use of the bearing B, thereby making it possible to mass produce and reduce costs.

Further, since the bearings 5a, 5b, 5c, 5ci, and the bearing 5' are attached to the fixed body 8, assembly and adjustment are easy.

[Brief explanation of the drawing]

Figure 1 C1D is a support device for two-way restraint, A is B's A-
A is a sectional view taken in the direction of arrow A, B is a plan view, FIG. The supporting device according to the invention is shown in Fig. 2 A-B sectional view taken along the line A-A, B is a plan view showing a partial cross section, and C
is a side view of an oval bearing. 1...Piping, 2...Free ball, 3
A, 3B... Ball socket lamp, 3, 3a
, 3b. 3 c , 3 a' , 3 b' , 3 c '・;・
...Guide rod, 4.4'...Bolts and nuts, 5', 5a, 5b. 5c, 5d... Bearing, 6... Bolt.
Nut, 7... Support body, 8... Fixed body.

Claims (1)

[Scope of utility model registration request] An annular ring that is slidably fitted into a pipe and has a spherical outer surface, and a support frame that has an inner surface that is in sliding contact with the outer surface of the ring and a plurality of support shafts that extend radially outward. , a pipe support comprising bearing members slidably fitted to the support shafts, and a support base extending in the radial direction of the pipe and having a flat surface to which the bearing members are attached. Device.