CN219064768U

CN219064768U - Pressure gauge fatigue test equipment

Info

Publication number: CN219064768U
Application number: CN202223508550.3U
Authority: CN
Inventors: 乔明树; 王向伟
Original assignee: Shenyang Dacheng Instrument Co ltd
Current assignee: Shenyang Dacheng Instrument Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-23
Anticipated expiration: 2032-12-28

Abstract

The utility model belongs to the technical field of pressure gauge batch verification, and particularly provides pressure gauge fatigue test equipment. The pressure gauge fatigue test equipment comprises a test bed and a hydraulic output mechanism; the test bed comprises a table top, supporting legs, a valve block, a checking assembly and a supporting piece; the hydraulic output mechanism comprises a box body, a gas-liquid pressurizing assembly, a control panel, a control knob, an output pressure gauge and an electric control assembly. The test bed of the pressure meter fatigue test equipment is provided with the plurality of verification components, the pressure distribution is uniform through the valve block and the pressure stabilizing block, the detection efficiency is greatly improved on the premise of ensuring the fatigue test effect, and the plurality of verification components are arranged in a step shape, so that workers can conveniently disassemble and assemble the pressure meters to be tested at different positions; the hydraulic output mechanism outputs hydraulic pressure through the gas-liquid pressurizing assembly, stepless pressurizing can be achieved, the starting process of the air cylinder is stable, working noise is low, and abrasion is not easy to occur after long-time working.

Description

Pressure gauge fatigue test equipment

Technical Field

The utility model belongs to the technical field of pressure meter fatigue detection, and particularly provides pressure meter fatigue test equipment.

Background

The pressure gauge is inevitably subjected to the condition that the working pressure exceeds the rated standard, namely the overpressure working environment, in the use process. The pressure gauge may have problems such as leakage and accuracy degradation after bearing excess pressure. Fatigue damage may also occur with long-term use of the manometer. Therefore, the same batch of pressure gauges need to be subjected to fatigue tests to verify the reliability of the pressure gauges before being put into use.

At present, the pressure gauge overpressure detection equipment in use in the market can simultaneously carry out fatigue tests on three to five pressure gauges, and the detection efficiency is low. The hydraulic control assembly of the fatigue test equipment is driven by a cam, and a gear rack mechanism is used as a transmission mechanism, so that the effect of periodically outputting ultrahigh hydraulic pressure is realized. The pressure output period of the control mode is limited by the transmission mechanism, so that the pressure output stability is insufficient, the operation noise is high, and the transmission mechanism is easy to wear.

In order to solve the problems, the utility model provides a pressure gauge fatigue test device.

Disclosure of Invention

In order to achieve the above purpose, the utility model adopts the following technical scheme: the fatigue test equipment for the pressure gauge comprises a test bed and a hydraulic output mechanism, wherein the test bed is communicated with the hydraulic output mechanism through a pipeline;

the test bench comprises a table top, supporting legs, valve blocks, check assemblies and supporting pieces, wherein the supporting legs are assembled at the bottom of the table top to form an overpressure detection workbench, the check assemblies are assembled on the surface of the table top through the supporting pieces respectively, the check assemblies are arranged from high to low in a ladder shape, the valve blocks are assembled on the side surfaces of the table top, a plurality of output ends of the valve blocks are respectively communicated with the check assemblies through pipelines, and the input ends of the valve blocks are connected with a hydraulic output mechanism through the pipelines.

Further, a baffle is arranged on the periphery of the table top, and the baffle and the table top form a groove shape.

Further, the hydraulic output mechanism comprises a box body, a gas-liquid pressurizing assembly, a control panel, a control knob, an output pressure gauge and an electric control assembly, wherein the gas-liquid pressurizing assembly is assembled in the box body, the control panel is fixedly installed on the front inclined surface of the box body, and the control knob, the output pressure gauge and the electric control assembly are embedded in the control panel.

Further, the check assembly comprises a main pipe body, a pressure gauge connecting nozzle, a liquid inlet valve, a connecting pipe and a standard pressure gauge, wherein the pressure gauge connecting nozzles are radially arranged on the side wall of the main pipe body at equal intervals, the liquid inlet valve and the standard pressure gauge are respectively assembled at two ends of the main pipe body, and the liquid inlet valve is communicated to the valve block through the connecting pipe.

Further, support piece includes outer tube, interior sleeve pipe, screw socket, bolt, locating hole, bracket, ferrule and connecting seat, and interior sleeve pipe is pegged graft in the outer tube, is provided with the screw socket on the lateral wall of outer tube, and the spiro union has the bolt on the screw socket, and the terminal lateral wall that runs through the outer tube of bolt extends to its inside, and the bottom welding of outer tube has the connecting seat, has evenly offered a plurality of locating holes on the interior sleeve pipe lateral wall, and interior sleeve pipe's top welding has the bracket, is equipped with the ferrule on the bracket, ferrule lock is on the bracket, realizes the fixed of outer tube.

Further, a drain is arranged on the surface of the table top;

the lower end of the drainage funnel is connected with a recycling bin positioned below the table top.

Further, the landing leg is provided with a pressure stabilizing block, the pressure stabilizing block is connected with the input end of the valve block through a pipeline, and the pressure stabilizing block is connected with external overpressure hydraulic equipment through a pipeline.

The beneficial effects of using the utility model are as follows:

1. the test bed of the pressure meter fatigue test equipment is provided with the plurality of verification components, the pressure distribution is uniform through the valve block and the pressure stabilizing block, the detection efficiency is greatly improved on the premise of ensuring the fatigue test effect, and the plurality of verification components are arranged in a step shape, so that workers can conveniently disassemble and assemble the pressure meters to be tested at different positions;

2. the hydraulic output mechanism of the pressure gauge fatigue test equipment outputs hydraulic pressure through the gas-liquid supercharging assembly, compared with a control mechanism formed by a cam and a gear transmission, the telescopic process of the air cylinder is not limited by the tooth pitch, stepless supercharging can be realized, the starting process of the air cylinder is stable, the working noise is low, and abrasion is not easy to occur after long-time working.

Drawings

FIG. 1 is a schematic top view of the present utility model

FIG. 2 is a top isometric view of the test stand assembly of the present utility model;

FIG. 3 is a bottom isometric view of the test stand assembly of the present utility model;

FIG. 4 is a schematic diagram of a verification assembly according to the present utility model;

FIG. 5 is a schematic view of the structure of the support member of the present utility model;

fig. 6 is a schematic structural view of the hydraulic output mechanism of the present utility model.

The reference numerals include: 1-a table top; 2-supporting legs; 3-valve block; 4-checking the assembly; 401-main pipe body; 402-manometer connection nozzle; 403-liquid inlet valve; 404-connecting a pipe; 405-standard pressure gauge; 5-a support; 501-an outer sleeve; 502-inner sleeve; 503-a screw base; 504-bolts; 505-locating holes; 506-bracket; 507-pipe clamp; 508-connecting seats; 6-draining; 7-stabilizing blocks; 8-a hydraulic output mechanism; 801-a gas-liquid pressurization assembly; 802-control panel; 803-control knob; 804-outputting a pressure gauge; 805-an electronic control assembly.

Detailed Description

The present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1-5, a pressure gauge fatigue test device comprises a test bed and a hydraulic output mechanism 8, wherein the test bed is communicated with the hydraulic output mechanism 8 through a pipeline;

the test bench comprises a table top 1, supporting legs 2, valve blocks 3, check assemblies 4 and supporting pieces 5, wherein the supporting legs 2 are assembled at the bottom of the table top 1 to form an overpressure detection workbench, the check assemblies 4 are assembled on the surface of the table top 1 through the supporting pieces 5 respectively, the check assemblies 4 are arranged from high to low in a step shape, the valve blocks 3 are assembled on the side surface of the table top 1, a plurality of output ends of the valve blocks 3 are respectively communicated with the check assemblies 4 through pipelines, and the input ends of the valve blocks 3 are connected with a hydraulic output mechanism 8 through the pipelines.

The periphery of the table top 1 is provided with a baffle plate, and the baffle plate and the table top 1 form a groove shape.

The staff can put the instrument into the groove on mesa 1 surface, and when accomplishing the superpressure detection work and demolish the manometer, the liquid in the check assembly 4 can spill over and drip to the groove on mesa 1 surface, avoids the overflow to flow outside the workstation.

The hydraulic output mechanism 8 comprises a box body, a gas-liquid pressurizing assembly 801, a control panel 802, a control knob 803, an output pressure gauge 804 and an electric control assembly 805, wherein the gas-liquid pressurizing assembly 801 is assembled in the box body, the control panel 802 is fixedly arranged on a front inclined surface of the box body, and the control knob 803, the output pressure gauge 804 and the electric control assembly 805 are embedded in the control panel 802;

as shown in fig. 6, the gas-liquid pressurizing assembly 801 is formed by combining a cylinder and an oil cylinder, the output end of the cylinder is connected with the piston head of the oil cylinder, and the cylinder pushes the piston head of the oil cylinder to push out liquid in the oil cylinder, so that the purpose of outputting hydraulic pressure is achieved.

The two output pressure gauges 804 are respectively a barometer and a hydraulic gauge and are respectively connected with a cylinder and an oil cylinder of the gas-liquid pressurizing assembly 801; the electronic control unit 805 is constituted by a simple circuit system for controlling the cylinder to periodically output the hydraulic pressure at regular time intervals while recording the number of times of pressurization and depressurization.

The verification assembly 4 comprises a main pipe body 401, a pressure gauge connecting nozzle 402, a liquid inlet valve 403, a connecting pipe 404 and a standard pressure gauge 405, wherein the pressure gauge connecting nozzles 402 are radially arranged on the side wall of the main pipe body 401 at equal intervals, the liquid inlet valve 403 and the standard pressure gauge 405 are respectively assembled at two ends of the main pipe body 401, and the liquid inlet valve 403 is communicated to the valve block 3 through the connecting pipe 404.

The pressure gauge connecting nozzle 402 is used for connecting a pressure gauge to be measured;

the standard pressure gauge 405 is a pressure gauge with accurate numerical value, and a worker can select and install the standard pressure gauge according to the requirement.

The support piece 5 comprises an outer sleeve 501, an inner sleeve 502, a screw base 503, bolts 504, positioning holes 505, a bracket 506, a pipe hoop 507 and a connecting base 508, wherein the inner sleeve 502 is inserted in the outer sleeve 501, the screw base 503 is arranged on the side wall of the outer sleeve 501, the bolts 504 are screwed on the screw base 503, the tail ends of the bolts 504 penetrate through the side wall of the outer sleeve 501 and extend into the inner sleeve, the connecting base 508 is welded at the bottom of the outer sleeve 501, a plurality of positioning holes 505 are uniformly formed in the side wall of the inner sleeve 502, the top end of the inner sleeve 502 is welded with the bracket 506, the pipe hoop 507 is assembled on the bracket 506, and the pipe hoop 507 is buckled on the bracket 506 to fix the outer sleeve 501.

The surface of the table top 1 is provided with a drain 6; the lower end of the drain 6 is connected with a recycling bin positioned below the table top 1.

The landing leg 2 is provided with a pressure stabilizing block 7, the pressure stabilizing block 7 is connected with the input end of the valve block 3 through a pipeline, and the pressure stabilizing block 7 is connected with a hydraulic output mechanism 8 through a pipeline.

The staff installs the pressure gauges to be tested on the pressure gauge connecting nozzles 402 one by one, opens the corresponding liquid inlet valves 403, starts the external overpressure hydraulic equipment and simultaneously carries out fatigue tests of a plurality of pressure gauges;

the staff sets up the time interval of pressure boost and decompression through the electronic control assembly 805 and starts the gas-liquid pressure boost assembly 801, when the time interval is short, the hydraulic output mechanism 8 periodically outputs hydraulic pressure, and the pressure gauge to be tested repeatedly bears the process of overpressure impact and then pressure relief, so that the number of times of impact caused by equipment start-stop can be borne when the pressure gauge is used for a long time;

when the time interval is long, the hydraulic output mechanism 8 continuously outputs hydraulic pressure, and the simulated pressure gauge is in a fatigue state under the overpressure working environment for a long time.

The foregoing is merely exemplary of the present utility model, and many variations may be made in the specific embodiments and application scope of the utility model by those skilled in the art based on the spirit of the utility model, as long as the variations do not depart from the gist of the utility model.

Claims

1. The utility model provides a manometer fatigue test equipment which characterized in that: the test bed is communicated with the pressure output mechanism through a pipeline;

2. A pressure gauge fatigue testing device according to claim 1, wherein: the periphery of the table top is provided with a baffle plate, and the baffle plate and the table top form a groove shape.

3. A pressure gauge fatigue testing device according to claim 1, wherein: the hydraulic output mechanism comprises a box body, a gas-liquid pressurizing assembly, a control panel, a control knob, an output pressure gauge and an electric control assembly, wherein the gas-liquid pressurizing assembly is assembled in the box body, the control panel is fixedly installed on a front inclined surface of the box body, and the control knob, the output pressure gauge and the electric control assembly are embedded in the control panel.

4. A pressure gauge fatigue testing device according to claim 1, wherein: the verification assembly comprises a main pipe body, a pressure gauge connecting nozzle, a liquid inlet valve, a connecting pipe and a standard pressure gauge, wherein the pressure gauge connecting nozzles are radially arranged on the side wall of the main pipe body at equal intervals, the liquid inlet valve and the standard pressure gauge are respectively assembled at two ends of the main pipe body, and the liquid inlet valve is communicated to the valve block through the connecting pipe.

5. A pressure gauge fatigue testing device according to claim 1, wherein: the support piece comprises an outer sleeve, an inner sleeve, a screw socket, bolts, positioning holes, brackets, a pipe hoop and a connecting seat, wherein the inner sleeve is inserted into the outer sleeve, the screw socket is arranged on the side wall of the outer sleeve, the bolts are screwed onto the screw socket, the tail ends of the bolts penetrate through the side wall of the outer sleeve and extend to the inside of the outer sleeve, the connecting seat is welded at the bottom of the outer sleeve, the positioning holes are uniformly formed in the side wall of the inner sleeve, the brackets are welded at the top ends of the inner sleeve, the pipe hoop is assembled on the brackets, and the pipe hoop is buckled on the brackets to fix the outer sleeve.

6. A pressure gauge fatigue testing device according to claim 1, wherein: the surface of the table top is provided with a drain;

7. A pressure gauge fatigue testing device according to claim 1, wherein: the landing leg is provided with a pressure stabilizing block, the pressure stabilizing block is connected with the input end of the valve block through a pipeline, and the pressure stabilizing block is connected with external overpressure hydraulic equipment through a pipeline.