JPH0413642Y2 - - Google Patents

Description

[Detailed description of the invention] "Purpose of the invention" This invention relates to the invention of a large-diameter pipe water pressure testing device, and includes a pipe joint between relatively large-diameter connected pipes that allows an operator to enter and exit the pipe. The purpose of the present invention is to obtain a mechanism that can accurately conduct tests in line with actual conditions of use, including high water pressure conditions, by using a mechanism that is simple in structure and handling to improve its water pressure sealing properties.

Industrial application field Water pressure testing equipment for relatively large diameter pipe joints, etc.

Conventional Technology Various tests have been carried out to test the water pressure resistance of joints of large-diameter pipes, etc., but such conventional test equipment does not have a Closure plates are attached and water pressure is applied between these plates for testing, and a packing material is used to seal between the circumferential side of the closure plates and the inner surface of the tube body.

Problems to be Solved by the Invention By the way, the conventional method as described above requires a plurality of closing plates that completely partition the cross section of the large-diameter tube to which it is applied, and the structure must be quite large. I have no choice but to. In addition, it is difficult to handle such a large blocking plate, and it is difficult to maintain an effective sealing relationship between the packing on the circumferential side of the blocking plate and the pipe under high pressure conditions, which is the practical water pressure of the large diameter pipe. It is not always easy to ensure this, and furthermore, in the case of large-diameter pipes, the amount of water to be poured between the closing plates must be quite large, making these operations complicated and time consuming.

``Structure of the invention'' Means for solving the problems This invention was devised after consideration to solve the problems of the conventional ones as described above. It has a packing receiving part provided at both ends of the body and the short pipe part body,
A tire-shaped packing having a lumen is installed in the packing receiving part, and an air supply means for supplying air to the lumen of the packing, and a water supply means for supplying water between the short pipe body and the test site on the pipe body. In the tire-shaped packing, the wall thickness of the joint surface of the tube body is larger than that of both sides, and the joint line is formed in multiple stages on the joint surface of the tube body, and the lower part of the short tube body described above is formed. This large-diameter pipe water pressure testing apparatus is characterized in that a treading part is provided only on both sides for centering and setting the pipe body.

Action: 3 by the lower part of the short pipe body and the pressure parts on both sides.
Adjustments in several places allow the short tube body to be set in alignment with the tube to be tested.

By supplying air to the inner cavity of the packing, both sides of the packing are expanded, and the thick-walled tube joint is stably set at the thick-walled tube-joint surface against the inner surface of the tube, thus creating a high pressure condition. It is possible to form a stable seal even under any conditions and to form an arbitrary set sealing condition.

By forming joining lines in multiple stages on the joint surface of the tube body, the sealing condition is stabilized when air is pressurized into the packing, and the leakage prevention effect is enhanced when test fluid is pressurized into the short pipe.

By supplying water between the short tube body and the tube body to be tested using the water supply means, the water pressure test under the above conditions can be arbitrarily adjusted and carried out.

Embodiment A specific embodiment of the present invention shown in the attached drawings will be described.
A short tube body 1 is installed inside a test part such as a connecting part of a joint 11 between a and 10a, and a packing receiving part 2 is provided around each end of the short tube body 1. A packing 3 is installed inside the receiving part 2. The packing 3 has an inner cavity 13 formed in the shape of a tire, and its tube joint surface 3a.
The wall thickness of is made sufficiently larger than both side parts 3b,
In addition, joining lines 3d are arranged in multiple stages on the joint surface of the pipe body, and an air supply pipe 4 from an air supply source is connected to such packing 3 via a valve 14, and the end portion 10a of the pipe body is heated by an appropriate air pressure. The inner surface of the packing 3 is designed to seal, and in order to ensure the sealing effect, serrated protrusions are provided in multiple stages as joint lines 3d on the pipe joint surface 3a of the packing 3.

Further, as shown in FIG. 2, a treading part 5 having adjustment means 15 on the bottom and both sides is disposed on the outside of the packing receiving part 2 as described above. part 2 to tube end 1
It is configured to be set in alignment with respect to 0a to joint 11. Furthermore, a water supply pipe 6 connected to a high-pressure water supply source is connected to the short pipe body 1 as described above, and the water supply pipe 6 is provided with a valve 16.

That is, as described above, by aligning the three tread pressure parts 5 with the adjusting means 15 by the operator and supplying air to the packing 3 under the set conditions, the valve 14 is opened to supply air to the packing 3, whereby a seal is obtained by the packing 3. Depending on the air supply conditions, settings can be made that match the packing pressure conditions actually applied. However, in this state, the water pressure test can be performed by opening the valve 16 and supplying water between the short tube body 1 and the tube test site. Tests are conducted depending on the conditions. Since the tube body joint surface 3a of the packing 3 is made sufficiently thicker than both side parts 3b, its inner cavity 1
A stable seal is maintained on the inner surface of the tubular body 10a even under the condition that air is supplied to the tubular body 10a and both side portions 3b are expanded.
The amount of fluid required for testing is also small, and accurate test results can be obtained easily and quickly.

``Effects of the invention'' According to the invention as explained above, a simple structure mainly consisting of short pipes and valve operation alone can achieve expansion and contraction action on relatively thin side surfaces and stable and simple operation on thick joint surfaces. With quick operation, it can be set stably for large-diameter pipes, and the desired water pressure test can be performed freely.Of course, no processing is required on the test object, the amount of water required for testing is small, and it is easy to use in practice as a large-diameter pipe. This device has the advantage of being able to effectively carry out high-pressure tests that meet the conditions of use, and is a highly effective device in practical terms.

[Brief explanation of drawings]

The drawings show embodiments of the invention,
FIG. 1 is a longitudinal sectional side view of the device of the present invention, and FIG. 2 is an explanatory diagram showing the arrangement of the treading portions from the front side. However, in these drawings, 1 is a short pipe body,
2 is a packing receiving part, 3 is a packing, 3a is a pipe joining surface, 3b is a side part, 3d is a joining line, 4
1 is an air supply pipe, 5 is a stepping part, 10a is a tube end, 11
13 is a joint, 13 is a packing lumen, 14 is a valve, 15 is an adjusting means, and 16 is a valve.

Claims (1)

[Scope of utility model registration request] It has a short tube part body to be installed in the test portion of the tube body and packing receiving parts provided at both ends of the short pipe part body, and a tire-shaped packing having a bore is installed in the packing receiving part and the packing receiving part is provided at both ends of the short pipe part body. In a device comprising an air supply means for supplying air into the inner cavity of the packing, and a water supply means for supplying water between the above-mentioned short tube body and the test site on the tube body, the tire-shaped packing is attached to the joint surface of the tube body. The wall thickness is made larger than that of both sides, and joining lines are formed in multiple stages on the joint surface of the tube body, and tread pressure is applied only to the bottom and both sides of the short tube body to align and set the tube body respectively. A large-diameter pipe water pressure testing device characterized by having a section.