JPH03144363A - Pressure bleeding tester - Google Patents

Abstract

PURPOSE:To enable testing at a correct pressurizing pressure by building an expansion chamber for a pressure fluid to be supplied into up with a expandable film body to facilitate the handling of a lid body with a lighter weight and compactness. CONSTITUTION:Concrete C is put into a container body 9, a flange section 31B of a film body 31 is placed on a flange section 9A of the body 9 and a lid body 11 is clamped on the body 9. Then, a regulator 25 is set to a specified pressure to open a pressure cock 21 and a pressure fluid within a nitrogen gas cylinder 27 is supplied into an expansion chamber 5. As a result, the expansion chamber 5 is always maintained at a specified pressure and water in the concrete is discharged from a drain section 13 by a pressure in the expansion chamber 5. With the discharge of water, a concrete surface is lowered but with an extension of the film body 31, it follows the concrete surface to always apply a specified pressure to the concrete C thereby making the lid body 11 lighter in weight and compact.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a pressurized breathing test device.

(Prior art) A pressurized breathing test device is used to test the pumpability of concrete before it hardens. Freshly mixed concrete is packed in a test container, and a predetermined pressure is applied for a predetermined period of time. This is done by pouring water into the concrete and forcibly draining the moisture from it.

FIG. 4 shows a schematic diagram of a conventional pressurized breathing test device.

The pressurized breathing test device 51 includes a test container 53 containing concrete C, a hydraulic cylinder 55 attached to the test container 53, a manual hydraulic pump 59 connected to the hydraulic cylinder 55 via a hose 57, etc. It is configured.

The test container 53 consists of a container body 61 and a lid 63 that is detachably attached to the container body 61.

A drainage part 65 is provided at the bottom of the test container 53, and the drainage part 65 is equipped with a drainage hole.

The hydraulic cylinder 55 is installed upright on the lid body 63, and the piston rod 69 and piston 71 of the hydraulic cylinder 55 are installed vertically within the container body 61.

In FIG. 4, reference numeral 73 indicates an O-ring attached to the piston 71, and reference numeral 75 indicates a pressure gauge provided on the hydraulic pump 59.

In the pressure breathing test, first, the 1M body 63 is removed, concrete C is poured into the container body 61, and the lid body 63 is attached to the container body 61.

Next, the hydraulic pump 59 is operated while watching the pressure gauge 75. The test is then carried out while constantly adjusting the pressurizing force.

(Problem to be Solved by the Invention) Therefore, in the conventional testing device, the lid body 63 has a hydraulic sill 55. Since the piston 71 and the like were attached, the lid 63 was heavy and bulky, making it inconvenient to handle the lid 63 during testing.

Furthermore, during the test, the hydraulic pump 59 must be operated constantly, which is very time-consuming.
7 and O ring 73, pressure gauge 75
There was also a problem that the pressure displayed in was not necessarily acting on concrete C accurately.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to make the 1M body lighter and more compact so that the lid body can be easily handled, and furthermore, it does not require any effort during testing. An object of the present invention is to provide a pressurized breathing test device that can perform a test at an accurate pressurizing pressure.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained with reference to FIGS. 1 to 3, which correspond to embodiments.

The present invention provides a container main body 9 having a drainage part 13 and an open top.
and an expansion chamber that is provided between the lid body 11 and the 1M body 11 and the container body 9 and expands toward the lower side of the container body 9 by supply of pressurized fluid. 5
and a pressure supply means 7 for supplying pressurized fluid to the expansion chamber 5.
The expansion chamber 5 is characterized in that at least the boundary between the upper surface of the concrete C accommodated in the container body 9 and the expansion chamber 5 is constituted by an expandable membrane 31. .

The membrane body 31 has its peripheral edge 31B connected to the container body 9 and the lid body 1.
1 and can be attached to the test container 3.

Moreover, the expansion chamber 5 can also be formed by a single bag body made of the membrane body 31.

Further, the pressure supply means 7 includes a pressure supply source 27 connected to the expansion chamber 5 and a path 23 between the expansion chamber 5 and the pressure supply source 27.
It can be configured with a pressure regulating valve 25 interposed therein.

(Function) The lid 11 does not have a hydraulic cylinder, piston, etc. as in the conventional case, so the lid 11 can be made lighter and more compact, and handling of the lid 11 during testing becomes easier.

Moreover, the pressure supply means 7 is connected to the pressure supply source 27 and the pressure regulating valve 2.
5, the test pressure will be accurate and the pressure breathing test can be easily performed without requiring any effort.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a pressure breathing test apparatus according to the present invention, FIG. 2 is a perspective view of a membrane, and FIG. 3 is an enlarged sectional view of a joint between a container body and a lid.

1 is a pressurized breathing test device, 3 is a test container, and an expansion chamber 5 is formed inside the test container 3.

A pressure supply means 7 is connected to the expansion chamber 5 .

The test container 3 includes a container body 9 with an open top and a lid 11.
The container body 9 has a drainage part 13° and a drainage cock 15.
is provided.

The lid body 11 is provided with a pressure gauge 17, a pressure relief cock 19°, and a pressure cock 21, and the pressure cock 21 is connected to a hose 23. A nitrogen gas cylinder 27 is connected via a regulator 25.
In the embodiment, these hoses 23, regulator 25. The pressure supply means 7 is constituted by the nitrogen gas cylinder 27 .

In the embodiment, the expansion chamber 5 is formed between the lower surface of the lid body 11 and the membrane body 3.
It is composed of I.

The membrane body 3] is made of a stretchable member such as rubber, and in this embodiment, as shown in FIG.
It is composed of a cylindrical portion 31A and a collar portion 31B formed on the upper edge.

To attach the membrane body 31 to the test container 3, as shown in FIG.
This is done by fastening the lid 11 and the flange 9A of the container body 9 with bolts B and nuts N, and sandwiching the flange 31B of the membrane body 31.

In the embodiment, an O-ring 33 is fitted into an annular groove on the lower surface of the lid 11 to improve airtightness.

In the pressurized breathing test, first, concrete C is placed in the container body 9, the flange 31B of the membrane body 3J is placed on the flange 9A of the container body 9, and the 1M body 11 is fastened to the container body 9.

Next, the regulator 25 is set to a predetermined pressure, the pressurizing cock 21 is opened, and the pressurized fluid in the nitrogen gas cylinder 27 is supplied to the expansion chamber 5.

As a result, the expansion chamber 5 is always maintained at a predetermined pressure, and water in the concrete is discharged from the drainage section 13 by the pressure of the expansion chamber 5. As the water is discharged, the concrete surface lowers, but the membrane body 31 stretches to follow the concrete surface, and a predetermined pressure is always applied to the concrete C.

Therefore, according to this embodiment, the lid 11 is not equipped with a hydraulic cylinder, a piston, etc. as in the conventional case.
1 can be made lighter and more compact.
1 can be easily handled.

In addition, since the pressure inside the expansion chamber 5 is displayed on the pressure gauge 17, the pressing force of the concrete C can be accurately determined, and no operation is required during the test.

Accurate pressure breathing tests can be easily performed without any effort.

In addition, in the example, the attachment of the membrane body 31 to the test container 3 is
Although the case where the membrane body 31 is sandwiched between the container body 9 and the lid body 11 has been described, the attachment structure of the membrane body 31 to the test vessel 3 is arbitrary.

Further, in the embodiment, a case has been described in which the expansion chamber 5 is formed by the membrane body 31 and the lid body 11, but the expansion chamber 5 may be constituted by a bag body made of the membrane body 31.

(Effect of the invention) According to the present invention, as is clear from the above description.

To obtain a pressurized breathing test device in which the lid body can be made lighter and more compact, the lid body can be easily handled, and furthermore, the test can be performed with an accurate pressing force without requiring any effort during the test.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the pressure breathing test device according to the present invention, Fig. 2 is a perspective view of the membrane body, Fig. 3 is an enlarged cross-sectional view of the joint between the container body and the lid, and Fig. 4 is the conventional pressure breathing test device. FIG. 2 is a schematic diagram of a pressurized breathing test device. In addition, 1 and 51 in the figure are pressurized breathing test equipment, 3.5
3 is a test container, 5 is an expansion chamber, 7 is a pressure supply means, 9.6
1 is a container body, 11.63 is a lid body, 23.57 is a hose, 25 is a regulator, 27 is a nitrogen gas cylinder, and 31 is a membrane body.

Claims (4)

[Claims] (1) A container body having a drainage portion and an open top; a lid detachably attached to the top of the container body; and a supply of pressurized fluid provided between the lid and the container body. an expansion chamber that expands toward the lower side of the container body; and a pressure supply means for supplying pressurized fluid to the expansion chamber; A pressurized breathing test device characterized in that the border between is made of a stretchable membrane. (2) The pressurized breathing test device according to claim 1, wherein the membrane body has a peripheral edge thereof sandwiched between the upper part of the container body and the lid body. (3) The pressurized breathing test device according to claim 1, wherein the expansion chamber is formed of a single bag body made of the membrane body. (4) The pressure supply means is comprised of a pressure supply source connected to the expansion chamber and a pressure regulating valve interposed in a path between the expansion chamber and the pressure supply source. Pressure breathing test equipment.