CN201069426Y

CN201069426Y - Load device for external bending torque test of three-pass side

Info

Publication number: CN201069426Y
Application number: CNU2007200412492U
Authority: CN
Inventors: 姚佐权; 陈学东; 孙福广; 杨铁成
Original assignee: Hefei General Machinery Research Institute Co Ltd
Current assignee: Hefei General Machinery Research Institute Co Ltd
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2008-06-04
Anticipated expiration: 2017-08-01

Abstract

A load device special for three-way out-of-plane bending moment test is provided, which is characterized in that a pair of vertical main pipe supporters are arranged in parallel, a pair of main pipe clampers are arranged on the top of the main pipe supporters and in the same horizontal position, a three-way main pipe, at the two ends thereof, is retained inside the main pipe clampers, a three-way branch pipe is arranged horizontally and below the three-way main pipe, a hydraulic ejector pin is arranged in parallel to the main pipe supporters, and a sensor is arranged on the hydraulic ejector pin. In the utility model, the main pipe supporter and the hydraulic ejector pin are arranged in the stress direction of the external bending moment test of three-way face, the three-way main pipe is clamped by the main pipe supporters, the hydraulic ejector pin applies the force to the three-way branch pipe in the stress direction of the external bending moment test of three-way face, and the sensor on the hydraulic ejector pin serves to obtain relevant test data, so as to provide necessary guarantee in the out-of-plane bending moment test of three-way components of the pressure pipeline.

Description

The outer moment of flexure of threeway face is tested special-purpose charger

Technical field:

The utility model relates to test unit, the outer moment of flexure test unit of a kind of threeway face at threeway in the pressure pipeline of more specifically saying so.

Background technology:

Threeway is as the main component parts of pressure pipeline, and there is the effect that adds moment of flexure in the load of being born in the pressure pipeline use toward contact except that interior pressure.Facts have proved, press caused stress far below adding the stress that moment of flexure produces in pressure pipeline.The moment of flexure that adds of threeway generally is divided into moment of flexure and the outer moment of flexure of face in the face.

Moment of flexure force way synoptic diagram in the threeway face of Figure 1 shows that.The threeway person in charge 1 and tee branch 2 T-shaped layouts, directed force F are parallel to the plane at the threeway person in charge 1 and tee branch 2 places, and act on the tee branch 2.

Fig. 2 (a), Fig. 2 (b) are depicted as the outer moment of flexure force way of threeway face synoptic diagram.Threeway is responsible for 1 and tee branch 2 T-shaped layouts, and directed force F is responsible for 1 and plane, tee branch 2 place perpendicular to threeway, and acts on the tee branch 2.

In the experimental study of pressure pipeline, the moment test charger more easily solves in the face, generally can adopt the intermediate transverse girder and the base of the bigger hydropress of tonnage that clamping is carried out at the person in charge two ends of threeway test specimen, moment of flexure can adopt hydraulic jack etc. to load on arm can to satisfy testing requirements in the face.And the charger of the outer moment of flexure test of face can't carry out on existing frock clamp, brings certain difficulty to test.

The utility model content:

The utility model is for avoiding above-mentioned existing in prior technology weak point, providing the outer moment of flexure of a kind of threeway face to test special-purpose charger, for the outer moment of flexure experimental study of the face of pressure pipeline threeway assembly provides necessary assurance.

Design feature of the present utility model is the person in charge's support of pair of upright of be arrangeding in parallel, the top of being responsible for support is a pair of person in charge's anchor clamps that are on the same horizontal level, threeway is responsible for its two ends and is clamped in person in charge's anchor clamps, tee branch is level, under tee branch, the hydraulic mandril that is parallel to each other with person in charge's support is set, on described hydraulic mandril, sensor is set.

The utility model is by the force direction that is subjected to that the outer moment of flexure of threeway face is tested person in charge's support and hydraulic mandril to be set, to be responsible for the clamping that support enforcement is responsible for threeway, with hydraulic mandril to tee branch by the outer moment of flexure test of face be subjected to the force direction application of force, obtain relevant test figure by the sensor on the hydraulic mandril.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, the utility model is simple in structure, and the test specimen easy accessibility is safe and reliable;

2, the used parts of the utility model are general material, are easy to buying and processing, make;

3, the utility model can obtain the outer moment of flexure numerical value of different faces by adjusting the position of load(ing) point, satisfies different testing requirementss.

Description of drawings:

Fig. 1 is moment of flexure synoptic diagram in the threeway face.

Fig. 2 (a), Fig. 2 (b) are the outer moment of flexure synoptic diagram of threeway face.

Fig. 3 (a) is the utility model master TV structure synoptic diagram.

Fig. 3 (b) is the utility model side-looking structural representation.

Fig. 4 adjusts the cushion block scheme of installation for the utility model.

Fig. 5 (a) is responsible for support and lower clamp structural representation for the utility model.

Fig. 5 (b) is a clamp structure synoptic diagram on the utility model.

Fig. 5 (c) is the utility model cushion block structural representation.

Number in the figure: the 1 threeway person in charge, 2 tee branch, 3 are responsible for anchor clamps on the support, 4,5 lower clamps, 6 hydraulic mandrils, 7 sensors, 8 adjustment cushion blocks, 9 foot bolt.

Below, in conjunction with the accompanying drawings the utility model is further described by embodiment:

Embodiment:

Referring to Fig. 3 (a), Fig. 3 (b), person in charge's support 3 of the pair of upright that be arranged in parallel, the top of being responsible for support 3 is a pair of person in charge's anchor clamps that are on the same horizontal level, is made of last anchor clamps 4 that are half slide structure (Fig. 5 (a)) and lower clamp 5 (Fig. 5 (b)), and is fastening with studs therebetween.It is to be clamped in its two ends to be responsible in the anchor clamps that threeway is responsible for 1, and tee branch 2 is level, under tee branch 2, the hydraulic mandril 6 that is parallel to each other with person in charge's support 3 is set, and on hydraulic mandril 6, sensor 7 is set.

In concrete the enforcement, corresponding setting also comprises:

Being responsible for support 3 is to be fixed on ground or the testing table by foot bolt 9, and hydraulic mandril 6 is adjustable along the axial location of tee branch 2, so that adjust the position that adds the force, thereby changes the size of the outer moment of flexure of threeway face.

According to the size of test specimen external diameter, at the different adjustment cushion block of specification that installs additional in the anchor clamps shown in Fig. 5 (c), last anchor clamps 4, lower clamp 5 and the inside surface of adjusting cushion block 8 all are processed as serrate, to increase the skin-friction force of itself and threeway test specimen.Guarantee that the threeway test specimen does not produce during moment of flexure reverse outside applying face by being responsible for anchor clamps.

During test, elder generation is fixed with ground by person in charge's support 3 that foot bolt 9 will be inconjunction with lower clamp 4, the threeway test specimen is installed again and is adjusted the position, loads onto anchor clamps 5, and the studs of tightening between lower clamp 4 and the last anchor clamps 5 gets final product.

Outer force loading device is made up of hydraulic mandril (or oil cylinder) and high-pressure hydraulic pump, and for test specimen provides required external force, the size of the outer moment of flexure of face can get final product by the position that adjustment adds the force; If test specimen only bears the outer moment of flexure of fixing face, can adopt common hydraulic jack to load, if bear tired outer carrying, can adopt one-way cylinder to be connected with hydraulic fatigue test system, pressurize or release to oil cylinder by fatigue test system, make the piston of oil cylinder rise or descend, thereby produce tired external applied load.The interior pressure of threeway test specimen can adopt hydraulic pump or hydraulic fatigue test system to load, and the size of interior pressure applies according to testing requirements.

By the sensor acquisition data, and realize data presentation, and plus load is carried out real time record by corresponding data processing.

Important technological parameters

Threeway test specimen maximum outside diameter: φ 325mm, maximum external applied load: 300KN; Pressure medium in the threeway test specimen: clean water or machinery oil.

Claims

1. the outer moment of flexure of threeway face is tested special-purpose charger, person in charge's support (3) of pair of upright is characterized in that be arrangeding in parallel, the top of being responsible for support (3) is a pair of person in charge's anchor clamps that are on the same horizontal level, threeway is responsible for (1) and is clamped in person in charge's anchor clamps with its two ends, tee branch (2) is level, under tee branch (2), the hydraulic mandril (6) that is parallel to each other with person in charge's support (3) is set, hydraulic mandril (6) is provided with sensor (7).

2. the outer moment of flexure of threeway face according to claim 1 is tested special-purpose charger, it is characterized in that described person in charge's support (3) fixes on the ground by foot bolt (9) or testing table on, described hydraulic mandril (6) is adjustable along the axial location of tee branch (2).

3. the outer moment of flexure of threeway face according to claim 1 is tested special-purpose charger, it is characterized in that described person in charge's anchor clamps are made of last anchor clamps (4) that are half slide structure and lower clamp (5), can be provided with in the anchor clamps to adjust cushion block (8).

4. the outer moment of flexure of threeway face according to claim 3 is tested special-purpose charger, it is characterized in that described anchor clamps (4), lower clamp (5) and the adjustment cushion block (8) gone up is serrated surface.