CN2078388U - Device for valve pressure testing - Google Patents

Abstract

The utility model provides a device for a valve pressure test, mainly comprising a fixing measuring end (2) installed on a base (1), a valve carriage (3), a valve bracket (4), a sliding measuring end (5), and two control valves (6) and (7). The fixing measuring end is fixed to one end of the base by a fixing support (8), and the sliding measuring end is supported on a rail on the other end of the base. The valve bracket is arranged at the center. The device for a valve pressure test alters the testing method in the prior art that force is applied to the pressure of the valve. The utility model has the advantages of accurate test measure, high work efficiency, and convenient operation; the device for valve pressure testing conforms to requirements in the pressure test of the industrial valves of GB 4981-85; the device for a valve pressure test is suitable for valves with different calibers to be done seals and strength tests on the same device.

Description

Device for valve pressure testing

The utility model belongs to the pressure experimental device of industrial valve.

The valve pressure test machine of prior art is the compression testing machine that adopts wafer type mostly, the deficiency of this equipment is to produce when regarding pressure test to clamp distortion, causes test inaccurate, inconvenient operation, manufacturing efficiency is low, and entire test does not meet the regulation of GB4981-85.

The purpose of this utility model is in order to overcome above deficiency, makes the pressure test of valve meet the regulation of GB4981-85.A kind of new valve pressure test device is provided.

The purpose of this utility model reaches like this, testing apparatus all is loaded on the base, the fixing survey held an end that is packed in base by fixed support, the other end of base is that end is surveyed in the slip that is supported on the base rail, two are surveyed between the end is a slidably valve body dolly, assembling valve body carriage is surveyed the control valve that the pressure medium turnover is housed respectively on the end at two on the dolly.Its advantage is that active force puts on the flange of valve, and does not act on whole valve body when the test valve, and test condition is consistent with the installation conditions of valve on pipeline, is met the regulation of GB4981-85 by the valve of this device experiment detection.

Description of drawings: Fig. 1 is the external view of each parts of the present utility model.Fig. 2,3, the 4th, the three-view diagram of valve body carriage of the present utility model.Because the carriage symmetry, thus 1/2nd of the plan view that in Fig. 2, drawn, Fig. 3 1/2nd of left view that only drawn, Fig. 4 1/4th of the plan view that only drawn.Fig. 5 is a plan view of surveying end, and Fig. 6 is a department of the sectional view of Fig. 5, because it is to garden heart symmetry, so the part of only having drawn a claw hook.Fig. 7 is the partial enlarged drawing of seal ring.Fig. 8 is that A among Fig. 6 is to view.Two survey end structures are identical.

In the accompanying drawings, 1, base plate 2, the fixing end 3 of surveying, valve body dolly 4, valve body carriage 5, slide and survey end 6,7, control valve 8, fixed support 9, baffle plate, 10, supporting plate, 11, gusset, 12, riser, 13,14, bolt 15, tooth plate, 16,18, connecting plate, 17, frame plate, 19, established angle 20, positioning hole, 21, clamping panel, 22,29, round nut, 23, claw hook, 24, seal ring, 25, the envelope dish, 26, the dish of ceasing to be faithful, 27, handle, 28, lead screw shaft, 30, screw, 31, nut sleeve, 32, handwheel, 33, the claw hook switch block, 34, pull out axle, 35, fork, 36, the fork circle, 37, water intake, 38, bypass channel.

Valve among Fig. 1 is a test specimen, is not the parts of this device, and is unnumbered.

Below in conjunction with accompanying drawing, provide a specific embodiment, and describe in detail.With reference to accompanying drawing 1.Several big components list of the present utility model is shown in Fig. 1.On base ［ 1 ］, assembled whole component, and by its load-bearing, the fixing survey holds ［ 2 ］ to be fixed in an end of base by fixed support ［ 8 ］.The other end of base ［ 1 ］ is that end ［ 5 ］ is surveyed in the slip that is bearing on the base rail, is that a location is loaded on the valve body carriage ［ 4 ］ on the valve body dolly ［ 3 ］ fixed and moving the survey between the end.Valve body dolly ［ 3 ］ is also by the guide rail support on the base.Survey on the end ［ 2 ］ and ［ 5 ］ control valve ［ 6 ］ and ［ 7 ］ are respectively arranged.On the base of surveying the outboard end of holding that slides, also have a baffle plate ［ 9 ］, skid off base to prevent it.

This device can carry out the leakage test at valve two ends in use simultaneously, also can single-endedly carry out leakage test, can also make a strength test immediately after leakage test.During strength test, fixed, moving, survey end all connects in tested valve, and leakage test can be surveyed by single-ended list, also can test simultaneously by both-end.Easy to operate, need not overturn, adjust valve, improved work efficiency, also alleviated labor intensity.

With reference to Fig. 2,3,4, in order to make device of the present utility model can adapt to the test requirements document of the valve of plurality of specifications model, the structural design of valve body carriage ［ 4 ］ is that the locating stud that supporting plate ［ 10 ］ is gone up on the valve body dolly ［ 3 ］ of positioning pin hole ［ 20 ］ and carriage assembling cooperates, and has assembled a pair of frame plate ［ 17 ］ and two pairs of tooth plates ［ 15 ］ composition valve carriage on supporting plate ［ 10 ］.Frame plate ［ 17 ］ is combined as a whole by connecting plate ［ 16 ］ ［ 18 ］, and supporting plate ［ 10 ］ is by riser ［ 12 ］, and gusset ［ 11 ］ is to its reinforcement, and tooth plate is fixed on the riser ［ 11 ］ by bolt ［ 14 ］.One elongated slot of tiltedly opening is arranged on the frame plate ［ 17 ］, in the elongated slot with bolt ［ 13 ］ to its location.When changing tested valve kind,,, make it along tooth plate (or decline) the tooth platform that rises along the inside slippage of elongated slot (or outwards slippage) as long as frame plate ［ 17 ］ is upwards mentioned.Frame plate is on supporting plate the time, footpath, institute side valve doorway size maximum, and when the tall person's one tooth platform of tooth plate, the caliber size minimum of institute's side valve door.

Between tooth plate ［ 15 ］ and the supporting plate ［ 10 ］ by the dress angle ［ 19 ］ be controlled at 50～75 the degree angles best.To cooperate the valve of various different designs specifications.In addition, if the size interval of the bore of the valve of being surveyed is too big, then can design some groups of tooth plates and carriage, to satisfy the demand.

With reference to Fig. 5 and Fig. 6, provided fixedly the survey end and slide and survey the structural drawing of end.In Fig. 5, provided the relative position of claw hook ［ 23 ］, the dish ［ 26 ］ of ceasing to be faithful is gone up the claw hook of assembling and the slotted eye of ceasing to be faithful at place thereof, the cease to be faithful arc control chute in the outer rim of the dish of ceasing to be faithful of position of control.Also show simultaneously on the envelope dish ［ 25 ］ with one heart, the relative position of seal ring ［ 24 ］ and bypass channel ［ 38 ］.Claw hook ［ 23 ］ rotates concrete structure and sees Fig. 6 under the effect of moving of handle ［ 27 ］, the basic assembling of survey end is served as theme with lead screw shaft ［ 28 ］ and is carried out, envelope dish ［ 25 ］ is contained in its termination portion, be clamping panel ［ 21 ］ and screw ［ 30 ］ then, nut sleeve ［ 31 ］, handwheel ［ 32 ］ nut ［ 29 ］, remaining part all is contained on the clamping panel, claw hook ［ 23 ］ be sleeved on clamping panel ［ 21 ］ and the slotted eye of ceasing to be faithful of the dish ［ 26 ］ of ceasing to be faithful in, claw hook is by round nut ［ 22 ］ axially locating at two ends, can not axially move, when can only drive angle of fork circle ［ 36 ］ rotation when moving by handle ［ 27 ］, drive fork ［ 35 ］ is stirred axle ［ 34 ］ makes claw hook switch block ［ 33 ］ rotate a corresponding angle, the grapple switch block rotates and drives the claw hook rotation, promptly finish the action of the clamping part of valve, claw hook generally rotates between 0～90 ° of degree angle.Handle and fork circle ［ 36 ］ are connected, and the end that uniform three shift forks ［ 35 ］ pull out axle ［ 34 ］ on the fork circle inserts in the fork ring recess, and an end is fixed on the claw hook switch block that is connected with key with claw hook.

Have twice that the seal groove of seal ring ［ 24 ］ is housed on envelope dish ［ 25 ］, seal groove and water intake ［ 37 ］ are by bypass channel ［ 38 ］ UNICOM.The effect of this two seals groove is the needs for the valves test that adapts to different bores, adapts to the minimum φ 65 of bore as the less groove in inside.Outside groove adapts to the valve of the maximum φ 150 of bore.The same with the valve carriage, the envelope dish also can be designed to different specification size, and stepping is to adapt to the needs of different size valve.As from φ 15～φ 40, φ 42～φ 60, φ 150～φ 450 is so that 1 meter of bore or large scale more.Control valve ［ 6 ］ ［ 7 ］ cut-in pressure system also links by water intake ［ 37 ］ and envelope dish, and test finishes, also from this valve relieving pressure medium, to unload lower valve.

During mounted valve, valve is positioned on the valve carriage, handle with sleeve makes claw hook go to pawl (because three claw hooks all link in fork circle ［ 36 ］) outwardly.Push dolly to the fixing end of surveying, return as handle then, three claw hooks coil the center of circle towards envelope, and clamping comprises the valve orchid of valve.Rotation hand wheel, mobile lead screw shaft promotes the envelope dish, closely contacts with valve is blue.The power of clamping between valve orchid and gauge head sealing is by lead screw shaft, the envelope dish, and the valve orchid acts on the clamping disk(-sc) to claw hook, rather than acts on the whole valve body.If do pressure-resistant seal and strength test simultaneously, then will slide to survey to hold is pushed into the dolly place, repeats above-mentioned action and gets final product, and principle is identical.Pressure medium is controlled by control valve, and pressurization, pressurize discharge, and finish by control valve.The seal arrangement of the structure employing different from the past of seal ring ［ 24 ］.Its axial cross section is that the limit of U type or V-type opening annular groove inwall blue with valve under pressure and the envelope dish is adjacent to selfsealings.And durable in use, be particularly suitable for the pressure test of Low pressure valve.Then should select the seal ring of high-strength material making for use for middle and high pressure, valve.Generally adopt the seal ring of rubber material for the mesolow valve.

Claims (6)

1, a kind of by base [1], the fixing end [2] of surveying, valve body dolly [3], valve body carriage [4], slide and survey the valve pressure test device of end [5] and control valve [6], [7] composition, it is characterized in that the fixing end [2] of surveying is installed in an end of base [1] by fixed support [8], end [5] is surveyed in the slip that is supported on the base rail of serving as reasons of the other end of base, and moving decide between the side be one to locate the valve body carriage [4] that is loaded on the valve body dolly [3].

2,, it is characterized in that the valve body carriage ［ 4 ］ on the said valve body dolly ［ 3 ］ is made up of the frame plate ［ 17 ］ and the tooth plate ［ 15 ］ that are bearing on the supporting plate ［ 10 ］ according to the described valve pressure test device of claim 1.

3,, it is characterized in that the said tooth plate ［ 15 ］ and the dress angle ［ 19 ］ of pressing of supporting plate ［ 10 ］ are 50～75 degree angles according to the described valve pressure test device of claim 2.

4, according to the described valve pressure test device of claim 1, it is characterized in that it is by the envelope dish ［ 25 ］ that is contained in proper order on the lead screw shaft ［ 28 ］ that end ［ 5 ］ is surveyed in said fixedly survey end ［ 2 ］ and slip, clamping panel ［ 21 ］ and screw ［ 30 ］, nut sleeve ［ 31 ］, handwheel ［ 32 ］ and round nut ［ 29 ］ and be contained in the dish ［ 26 ］ of ceasing to be faithful on the clamping panel ［ 21 ］, claw hook ［ 23 ］, fork circle ［ 36 ］, fork ［ 35 ］ pulls out axle ［ 34 ］, and the special piece of claw hook ［ 33 ］ is formed.

5, according to the described valve pressure test device of claim 4, it is characterized in that having on the said envelope dish ［ 25 ］ two roads that seal ring ［ 24 ］ seal groove is housed, seal groove and water intake ［ 37 ］ are by bypass channel ［ 38 ］ UNICOM.

6, according to the described valve pressure test device of claim 5, the axial cross section that it is characterized in that said seal ring ［ 24 ］ is a U type groove.

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