CN108152185A - New concrete air infiltration tester - Google Patents

Abstract

The invention provides a novel concrete air permeability tester, which relates to the technical field of civil engineering. It includes a top cover, air inlet and outlet joints, two pads, a rubber ring, a casing, a rubber ring valve pipe seat, and a rubber ring valve pipe joint; the rubber ring is an annular cavity structure with a circular gap on the outer wall; the rubber ring is installed on the Inside the casing; there is a hole on the side wall of the casing; the rubber ring valve pipe socket is installed in the hole on the side of the casing; the rubber ring valve pipe joint is installed on the rubber ring valve pipe socket; two pads are respectively clamped on the rubber The upper and lower parts of the inner circumference of the rubber ring; the upper and lower spacers and the outer wall of the inner ring of the rubber ring together constitute the inner cavity for the concrete test block; the top cover is detachably covered on the outer shell; and the top cover and the bottom of the outer shell are respectively Each is provided with an air inlet and outlet joint. The beneficial effect of the scheme provided by the invention is that the operation is simple, and the concrete test block, cushion block and rubber ring can be freely installed and disassembled only by taking off the top cover, and impurities are also easy to clean.

Description

New Concrete Air Permeability Tester

technical field

The invention belongs to the technical field of civil engineering, and in particular relates to a novel concrete air permeability tester.

Background technique

Concrete life testing has always been one of the international frontier research topics in the field of civil engineering, and testing the air permeability of concrete as a reference index for concrete life is also a way to gain international recognition. However, the existing concrete air permeability testers are all complicated to operate. Therefore, it is very necessary to design a convenient concrete air permeability tester.

Contents of the invention

The purpose of the present invention is: to overcome the deficiencies of the prior art and provide a novel concrete air permeability tester.

In order to achieve the above object, the invention provides the following technical solutions:

A new concrete air permeability tester, including a top cover, two air inlet and outlet joints, two pads, a rubber ring, a casing, a rubber ring valve pipe joint, and a rubber ring valve pipe joint;

Wherein, the rubber ring is an annular cavity structure, and an annular gap is opened on the outer wall of the annular cavity structure; the rubber ring is installed inside the shell, and is attached to the inner wall of the shell to form an inflatable outer cavity;

Corresponding to the height of the annular notch of the rubber ring, a hole is opened on the side wall of the housing as the inflation inlet of the inflatable outer cavity; the valve socket of the rubber ring is tightly installed in the aforementioned hole, and is tightly connected to the inner wall of the hole Fitting; the rubber ring valve tube joint is tightly installed on the rubber ring valve tube seat;

The outer circumferences of the two spacers have a shape and size compatible with the inner circumference of the rubber ring; one of the spacers is clamped at the lower part of the inner circumference of the rubber ring and fits to the inner bottom of the shell; the other spacer The block is set on the upper part of the inner circumference of the rubber ring, and is located below the top cover; the upper and lower two pads and the outer wall of the inner ring of the rubber ring together constitute the inner cavity for the concrete test block;

The top cover is detachably covered on the top of the shell;

The top cover and the bottom of the shell are each equipped with an air inlet and outlet joint; wherein, the one on the top cover is an air inlet joint, and the one on the bottom of the shell is an air outlet joint; the test gas enters the concrete test block from the upper air inlet and outlet joint. The inner cavity, and then come out from the lower air inlet and outlet joints.

Further, the valve socket of the rubber ring is an annular cylinder whose outer diameter is the same as the diameter of the hole and whose height is the same as the thickness of the side wall of the casing.

Furthermore, several planar structures are respectively provided on the outer surface of the annular cylinder; corresponding to the positions of the aforementioned planar structures, several identical planar structures are respectively provided on the inner surface of the hole.

In a preferred embodiment, the outer surface of the circular cylinder is respectively provided with four plane structures of equal size, and two adjacent plane structures are perpendicular to each other, and two opposite plane structures are parallel to each other; meanwhile, the inner surface of the hole The side surfaces are also provided with four plane structures of equal size, and two adjacent plane structures are perpendicular to each other, and two opposite plane structures are parallel to each other.

Further, an O-ring is installed between the top cover and the other spacer.

Further, the top cover is connected to the top of the casing by screws and nuts.

Compared with the prior art, the above technical solution adopted by the present invention has the following beneficial effects as an example and not as a limitation: the new concrete air permeability tester of the present invention is simple to operate, only needs to take off the top cover, and the concrete The test block, spacer and rubber ring can be installed and disassembled freely, and impurities are also easy to clean.

Description of drawings

Fig. 1 is the sectional view of novel concrete air permeability tester;

Figure 2 is an axonometric view of the top cover;

Fig. 3 is the axonometric view of the outer wall of the rubber ring;

Fig. 4 is the axonometric view of the rubber ring valve pipe seat;

Fig. 5 is the axonometric view of rubber ring;

Fig. 6 is a sectional view of the rubber ring.

Explanation of reference signs

Top cover 1, through hole 1-1, air inlet and outlet joint 2, O-ring 3, pad 4, screw 5, nut 6, rubber ring 7, shell 8, hole 8-1, threaded hole 8-2, rubber Ring valve pipe socket 9, rubber ring valve pipe joint 10, concrete test block 11.

Detailed ways

The technical scheme of the novel concrete air permeability tester provided by the present invention will be further described below in conjunction with specific embodiments and accompanying drawings. The advantages and features of the present invention will become clearer in conjunction with the following description.

It should be noted that the embodiments of the present invention have better implementability and are not intended to limit the present invention in any form. The technical features or combinations of technical features described in the embodiments of the present invention should not be regarded as isolated, and they can be combined with each other to achieve better technical effects. The scope of the preferred embodiment of the present invention may also include other implementations, and this should be understood by those skilled in the art to which the embodiments of the present invention pertain.

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values.

The drawings of the present invention are all in a very simplified form and use inaccurate proportions, and are only used for the purpose of conveniently and clearly assisting in illustrating the embodiments of the present invention, and are not intended to limit the conditions for the implementation of the present invention. Any structural modification, change in proportion or size adjustment shall fall within the scope covered by the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. And the same reference numerals appearing in the drawings of the present invention represent the same features or components, and can be applied in different embodiments.

As shown in Figures 1 to 6, the present invention provides a novel concrete air permeability tester. The new concrete air permeability tester includes a top cover 1, two air inlet and outlet joints 2, an O-ring 3, two pads 4, screws 5, nuts 6, a rubber ring 7, a casing 8, a rubber ring valve tube Seat 9, rubber ring valve pipe joint 10.

Wherein, the rubber ring 7 is an annular cavity structure, and an annular gap is provided on the outer wall of the annular cavity structure; the rubber ring 7 is installed inside the shell 8, and is bonded to the inner wall of the shell 8 to form an inflatable outer cavity; At the height of the annular gap of the rubber ring 7, a hole 8-1 is opened on the side wall of the housing 8, which is the inflation inlet of the inflatable outer cavity; -1, and the two are connected by gas welding; the rubber ring valve pipe joint 10 is tightly installed on the rubber ring valve pipe joint seat 9.

Further, the rubber ring valve socket 9 is an annular cylinder with the same outer diameter as the hole 8-1 and the same height as the thickness of the side wall of the casing 8; the outer surfaces of the annular cylinder are respectively provided with several planar structures; corresponding to At the position where the aforementioned planar structures are located, several identical planar structures are also respectively provided on the inner surface of the hole 8-1.

In a preferred embodiment, the outer surface of the circular cylinder is respectively provided with four plane structures of equal size, and two adjacent plane structures are perpendicular to each other, and two opposite plane structures are parallel to each other; meanwhile, the hole 8- The inner surface of 1 is also provided with four planar structures of equal size, and two adjacent planar structures are perpendicular to each other, and two opposite planar structures are parallel to each other.

Specifically, the processing method of the hole 8-1 on the side wall of the housing 8 is: first punch a circular hole with a certain diameter, and process four planes of equal size on the inner surface of the circular hole respectively, wherein the adjacent two planes are perpendicular to each other, The two opposite planes are parallel to each other; adopting this shape can ensure that the valve seat 9 of the rubber ring will not rotate after being installed in the hole 8-1, and then the two can be conveniently connected by gas welding. Further, in a preferred embodiment, the diameter of the hole 8 - 1 is the same as the width of the annular notch on the outer wall of the rubber ring 7 .

Correspondingly, the processing method of the rubber ring valve pipe socket 9 is as follows: first process an annular cylinder whose outer diameter is the same as the diameter of the hole 8-1 and whose height is the same as the thickness of the side wall of the casing 8, and then separately Four planes of equal size are processed, and two adjacent planes are perpendicular to each other, and two opposite planes are parallel to each other; the inner diameter of the annular cylinder is adapted to the size of the valve pipe joint 10 of the rubber ring.

Further, the outer circumference of the two pads 4 has a shape and size compatible with the inner circumference of the rubber ring 7; wherein, one pad 4 is clamped at the lower part of the inner circumference of the rubber ring 7, and is attached to the inner bottom of the housing 8 ; Another spacer 4 is clamped on the upper part of the inner circumference of the rubber ring 7 and is located under the top cover 1 . In order to strengthen the airtightness between the other spacer 4 and the top cover 1, an O-ring 3 can be installed between the top cover 1 and the other spacer 4 to prevent gas from flowing from the top cover 1 and spacer 4 leaks out. The upper and lower pads 4 and the outer sidewall of the inner ring of the rubber ring 7 jointly constitute the accommodating cavity of the concrete test block 11 for pressing the concrete test block 11 .

Further, the top cover 1 is detachably covered on the top of the shell 8; the top cover 1 on the top of the shell 8 is opened, and the two pads 4, the concrete test block 11 and the rubber ring 7 can be freely taken out and installed.

As an example but not a limitation, the top cover 1 and the shell 8 are connected by screws 5 and nuts 6; specifically, several through holes 1-1 are uniformly distributed around the top cover 1; several threads are provided around the top of the shell 8 hole 8-2; the screw 5 is threadedly connected with the top of the housing 8 through the threaded hole 8-2; The nut 6 can be tightened to fix the screw 5 and the top cover 1 , so that the top cover 1 is installed on the top of the shell 8 .

Further, a gas inlet and outlet joint 2 is respectively provided at the bottom of the top cover 1 and the shell 8; wherein, the one on the top cover 1 is an air intake joint, and the bottom of the shell 8 is a gas outlet joint; the test gas enters from the upper air inlet and outlet joint 2 The accommodating inner cavity of the concrete test block 11 then comes out from the air inlet and outlet joint 2 of the bottom.

The working mode of the concrete air permeability tester of the present invention is: when in use, the atmospheric pressure of 6-10 Bar is filled into the air-filled outer cavity of the rubber ring 7 through the rubber ring valve pipe joint 10 and the rubber ring valve pipe joint 9 , Then the rubber ring 7 can expand, the outer ring wall of the rubber ring 7 expands outwards, and is pressed tightly to the shell 8, and the inner ring wall of the rubber ring 7 expands inwardly and presses the spacer 4 and the concrete test block 11. The test gas enters the accommodating cavity of the concrete test block 11 from the upper gas inlet and outlet joint 2, and then comes out from the lower gas inlet and outlet joint 2.

As an example without limitation, compared with the prior art, the novel concrete air permeability test of the present invention has the following beneficial effects: the novel concrete air permeability tester of the present invention is simple to operate, and only needs to take the top cover off , Concrete test blocks, pads and rubber rings can be installed and disassembled freely, and impurities are also easy to clean. The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any change or modification made by any person familiar with the field based on the technical content disclosed above shall be regarded as an equivalent effective embodiment, and shall fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. a kind of new concrete air infiltration tester, it is characterised in that：Including head cover (1), two into air outlet adapter (2), two A cushion block (4), rubber ring (7), shell (8), rubber ring valve pipe joint chair (9), rubber ring valve pipe fitting (10)；

The rubber ring (7) is toroidal cavity structure, and an annular notch is opened up on the lateral wall of the toroidal cavity structure；Rubber (7) are enclosed mounted on shell (8) inside, and are bonded with the inner wall of shell (8), form inflation exocoel；

Corresponding to the height where the annular notch of rubber ring (7), a hole (8-1) is provided on the side wall of shell (8), as institute State the inflation entrance of inflation exocoel；Described in rubber ring valve pipe joint chair (9) close installation inside hole (8-1), and with hole (8-1) Inner wall fits closely；Rubber ring valve pipe fitting (10) is installed tightly on rubber ring valve pipe joint chair (9)；

The periphery of described two cushion blocks (4) is respectively provided with the shape and size being adapted with the inner circumferential of rubber ring (7)；Wherein, one Cushion block (4) is fastened on the inner circumferential lower part of rubber ring (7), and is bonded with the interior bottom of shell (8)；Another cushion block (4) is fastened on The inner circumferential top of rubber ring (7), and positioned at the lower section of head cover (1)；Upper and lower two cushion blocks (4) and the inner ring outside of rubber ring (7) Wall collectively forms the receiving inner cavity of concrete test block (11)；

The head cover (1) removably covers conjunction at the top of shell (8)；

There are one each installations in the bottom of the head cover (1) and the shell (8) into air outlet adapter (2)；Wherein, on head cover (1) For inlet suction port, shell (8) bottom is air outlet adapter；Gas is tested to try from top into air outlet adapter (2) into concrete The receiving inner cavity of block (11), then from lower part into air outlet adapter (2) out.

2. new concrete air infiltration tester according to claim 1, it is characterised in that：The rubber ring vent pipe connects Seat (9) is outer diameter is identical with the diameter of hole (8-1), the high ring-shaped cylinder identical with the sidewall thickness of shell (8).

3. new concrete air infiltration tester according to claim 2, it is characterised in that：The outside of the ring-shaped cylinder Face is respectively equipped with several planar structures；

Corresponding to the planar structure position, the medial surface of the hole (8-1) is also respectively equipped with several identical planes Structure.

4. new concrete air infiltration tester according to claim 3, it is characterised in that：The outside of the ring-shaped cylinder Face is respectively equipped with four equal-sized planar structures, and two adjacent planar structures are mutually perpendicular to, two opposite planar structures It is mutually parallel；

Meanwhile the medial surface of the hole (8-1) is also respectively equipped with four equal-sized planar structures, and two adjacent planar junctions Structure is mutually perpendicular to, and two opposite planar structures are mutually parallel.

5. new concrete air infiltration tester according to claim 1, it is characterised in that：The head cover (1) and described O-ring seal (3) is installed between another cushion block (4).

6. new concrete air infiltration tester according to claim 1, it is characterised in that：The head cover (1) and shell (8) top is connected by screw (5) and nut (6).