CN2275240Y

CN2275240Y - Quick freeze-thawing test device for concrete

Info

Publication number: CN2275240Y
Application number: CN 97200590
Authority: CN
Inventors: 关成仁
Original assignee: BEIJING COMPLETE SET EQUIPMENT Co
Current assignee: BEIJING COMPLETE SET EQUIPMENT Co
Priority date: 1997-01-15
Filing date: 1997-01-15
Publication date: 1998-02-25
Anticipated expiration: 2007-01-15

Abstract

The utility model relates to a quick freeze-thawing test device for concrete. A box body and a box cover of a test box are both provided with a sandwich structure. Heat-insulating materials are filled in the sandwich layers. The box cover is hinged on the box body by a hinge pin. The joint surface of the box cover and the box body is provided with a sealing strip. A hinge support of the box cover and the box body is provided with a balance spring. An inlet pipe and an outlet pipe are arranged on two opposite side walls of the box body. A moving frame which can be taken out is arranged in the box body. The moving frame divides the cavity of the box body into a plurality of squares, and the upper part and the lower part of each square are communicated. Rubber sleeves of test pieces are arranged in the squares. The utility model has the advantages of accurate, reliable and quick data detection, high efficiency, compact structure, small land occupation, simple installation and low failure rate; the quick freeze-thawing test device for concrete can realize automation control.

Description

Concrete fast freeze-thaw experimental provision

The utility model relates to the test concrete antifreezing and melts the device of damage capability, a kind of specifically concrete fast freeze-thaw experimental provision.

The fast freeze-thaw test of concrete sample is to determine the freezing-thawing cycles that concrete sample can bear, the ability that promptly concrete freeze thawing resistance destroys in the range of temperature of regulation.At present, at home and abroad go up and still do not have the device that unified concrete antifreezing melts test.Though it is concrete test will be placed back and forth hot and cold groove to detect its dynamic modulus of elasticity value to reduce situation (to reduce by 40% standard as destruction) that the test unit of two slot types or three slot types, the shortcoming of these devices are arranged in the prior art.Labour intensity is big, and is inaccurate, and fault is many.

The purpose of this utility model is to provide a kind of device that can carry out the concrete fast freeze-thaw test, detect data accurately and reliably, fast, efficient height, compact conformation, occupation of land less, install simple, can realize robotization control, and fault is few.

The purpose of this utility model is achieved in that

A kind of concrete fast freeze-thaw test device, its structure comprises chamber, heating arrangement, refrigerating plant, cooling water circulating device, electric control gear; Chamber has into and out of pipeline and constitutes refrigerating medium medium circulation and chilled water circulation by related valve and heating arrangement, refrigerating plant, it is characterized in that:

A. chamber is made up of casing, case lid, and this casing, case lid are sandwich structure, is filled with heat-barrier material in this interlayer;

B. case lid is articulated in casing with hinge pin, and the composition surface of case lid and casing is provided with sealing strip, and hasp is set on the wall of unlatching face one side makes case lid and casing constitute seal closure;

C. the articulated stand of case lid and casing is provided with balancing spring, it is configured to: upper bracket is fixed in case lid, lower carriage is fixed in casing, between upper and lower support hinge pin is housed, on the upper bracket and be provided with a hanging spring shaft, the position of this hanging spring shaft is higher than hinge pin, be inserted in the last hook of extension spring on this hanging spring shaft, the following hook of this extension spring connects the collar of a screw tip, this screw rod stretches out downwards from the base plate of the lower carriage that is connected in casing, and external part is lock onto the bottom surface of this base plate with setting nut;

D. be provided with induction pipe in the middle and upper part of a sidewall of casing, be provided with outlet in the middle and lower part of another madial wall of casing;

E., one movable frame that can take out is housed in the casing, and this framework is linked together and cabinets cavity is divided into some grids that communicate up and down by some plates in length and breadth, bar;

F. in each grid of described movable frame the test specimen rubber sleeve is housed, this rubber sleeve is had the barrel-shaped shape in side at the end in being in vain, is filled with anti freezing solution between each rubber sleeve.

In preferred embodiment, the articulated stand of described case lid and casing is two groups, and two extension springs are housed in every group of articulated stand.

Described case lid, casing are made with the unoxidizable alloy steel, and the heat-barrier material in described case lid, the casing interlayer is the foamed polyurethane plastics.

The utility model has following actively useful effect:

1. at the bottom of convenient and simple for operation, the intensity of workers;

2. compact conformation, occupation of land are lacked;

3. can adorn simultaneously that test specimen is many, quick, efficient is high;

4. the structure of experimental box rationally, sealing is reliable, fault is few, be not affected by the external environment, thereby it is accurate to detect data;

5. the setting of chamber balancing spring can make case lid from being parked on the desired location.

Now in conjunction with the accompanying drawings with preferable experimental example:

Fig. 1 is a kind of embodiment of the utility model structure;

Fig. 2 is the profile synoptic diagram of chamber among Fig. 1;

Fig. 3 is the local parting view of the A-A of Fig. 2;

Fig. 4 is the synoptic diagram that is placed with movable frame and test specimen rubber sleeve in the casing;

Fig. 5 is a kind of embodiment of movable frame;

The same Fig. 5 of Fig. 6 is another embodiment;

Fig. 7 is the organigram of test specimen rubber sleeve

Concrete fast freeze-thaw test device of the present utility model, its structure comprises chamber, heating arrangement, refrigerating plant, cooling water circulating device, electric control gear; Chamber has into and out of pipeline and constitutes refrigerating medium medium circulation and chilled water circulation by related valve and heating arrangement, refrigerating plant, and Fig. 1 shows the structural principle of a kind of embodiment.

Fig. 1 is numbered:

EC electric cabinet 2RW liquid temperature measurement resistance 1RW central temperature measuring resistance

Long figure record adjusting apparatus F blower fan of cooling tower among the 6J numeration relay R C

CT cooling tower P1 cooling water circulating pump TC chamber

OPG oil pressure gauge LPG low-pressure meter HPG high pressure gauge

JC pressure reduction relay J P high-low voltage relay 2JP pressure switch

D device for drying and filtering WC water-cooled condenser C compressor

FV1 fuel outlet valve ER evaporator FV2 stop valve

CA kapillary FD solenoid valve H well heater

V throttling valve CV1 reverse checkvalve CV2 reverse checkvalve

JB water flow relay P2 thaw cycle pump P3 freezes ebullator

Technical characterictic of the present utility model is that the structure of experimental box TC among Fig. 1 sees Fig. 2 Fig. 3, and each assembly is numbered among the figure:

1. casing 2. case lids 3. thermal insulating fillings

4. hinge pin 5. sealing strips 6. hasps

7. upper bracket 8. lower carriages 9. hanging spring shafts

10. extension spring 11. screw rods 12. lower carriage base plates

13. nut 14. casing induction pipes 15. casing outlets

16. movable frame 17. test specimen rubber sleeves

Chamber of the present utility model is made up of casing 1, case lid 2, and this casing, case lid are sandwich structure, is filled with heat-barrier material 3 in this interlayer;

Case lid 2 is articulated in casing 1 with hinge pin 4, and the composition surface of case lid and casing is provided with sealing strip 5, and hasp 6 is set on the wall of unlatching face one side makes case lid and casing constitute seal closure;

The articulated stand of case lid and casing is provided with balancing spring, it is configured to: upper bracket 7 is fixed in case lid 2, lower carriage 8 is fixed in casing 1, hinge pin 4 is housed between upper and lower support, on the upper bracket and be provided with a hanging spring shaft 9, the position of this hanging spring shaft is higher than hinge pin 4, be inserted in the last hook of extension spring 16 on this hanging spring shaft, the following hook of this extension spring 10 connects the collar on a screw rod 11 tops, this screw rod 11 stretches out downwards from the base plate 12 of the lower carriage 9 that is connected in casing, and external part is lock onto the bottom surface of this base plate with setting nut 13;

Middle and upper part at a sidewall of casing is provided with induction pipe 14, is provided with outlet 15 in the middle and lower part of another madial wall of casing;

One movable frame that can take out 16 is housed in the casing, this framework by some plates in length and breadth, bar links together and with cabinets cavity be divided into some grids that communicate up and down for example 28 lattice see Fig. 4 Fig. 5 Fig. 6, Fig. 6 is the embodiment of box-shaped movable frame, it is gone to the bottom and is positioned over the casing inner bottom surface, Fig. 6 is shaped as frame movable frame embodiment, and this framework is placed on the angle steel shape support on the cabinet wall (this support accompanying drawing does not show).

In each grid of described movable frame the test specimen rubber sleeve is housed, this rubber sleeve is had the barrel-shaped shape in side at the end in being in vain, is filled with anti freezing solution between each rubber sleeve, and one of them places neutron moisture meter during use, and all the other each lattice are placed test specimens.

In Fig. 2 was embodiment illustrated in fig. 3, the articulated stand 7,8 of described case lid and casing was two groups, and two extension springs 10 are housed in every group of articulated stand.

In preferred embodiment, described case lid, casing are made with the unoxidizable alloy steel, and the heat-barrier material 3 in described case lid, the casing interlayer is the foamed polyurethane plastics.

Claims

1, a kind of concrete fast freeze-thaw test device, its structure comprises chamber, heating arrangement, refrigerating plant, cooling water circulating device, electric control gear; Chamber has into and out of pipeline and constitutes refrigerating medium medium circulation and chilled water circulation by related valve and heating arrangement, refrigerating plant, it is characterized in that:

F. in each grid of described movable frame the test specimen rubber sleeve is housed, this rubber sleeve is had the barrel-shaped shape in side at the end in being in vain, is filled with anti freezing solution between each rubber sleeve

2, concrete fast freeze-thaw test device as claimed in claim 1, it is characterized in that: the articulated stand of described case lid and casing is two groups, and two extension springs are housed in every group of articulated stand.

3, concrete fast freeze-thaw test device as claimed in claim 1, it is characterized in that: described case lid, casing are made with the unoxidizable alloy steel, and the heat-barrier material in described case lid, the casing interlayer is the foamed polyurethane plastics.