CN203561560U - Controllable pressure load hydraulic pressure device - Google Patents
Controllable pressure load hydraulic pressure device Download PDFInfo
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- CN203561560U CN203561560U CN201320772546.XU CN201320772546U CN203561560U CN 203561560 U CN203561560 U CN 203561560U CN 201320772546 U CN201320772546 U CN 201320772546U CN 203561560 U CN203561560 U CN 203561560U
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- 238000012360 testing method Methods 0.000 claims abstract description 65
- 230000008676 import Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 6
- 230000007812 deficiency Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a controllable pressure load hydraulic pressure device comprising a manual pressure test pump (1), an electric pressure test pump (2), a high pressure check valve (3), an accumulator A (5), a pressure meter (6), a pressure transmitter (7), and a recorder (8). The manual pressure test pump (1) and the electric pressure test pump (2) are connected to an inlet of the accumulator A (5) through a water incoming pipeline. An outlet of the accumulator A (5) is connected with a water outgoing pipeline. The pressure meter (6) is disposed on the water outgoing pipeline. The pressure transmitter (7) is connected with the pressure meter (6). The recorder (8) is connected with the pressure transmitter (7). The high-pressure check valve (3) is disposed at an outlet of the electric pressure test pump (2). The controllable pressure load hydraulic pressure device has the advantages that efficiency is high, pressure loading speed is controllable, pressure curves can be recorded and cost is low.
Description
Technical field
The utility model relates to pressure device and manufactures field, is specifically related to the device for the withstand voltage test of pressure device.
Background technology
All kinds of pressure-vessels, pipeline valve, rubber tube and other pressurized device, after manufacture completes, all need to carry out the hydraulic testing, and to guarantee to dispatch from the factory, finished product can reach predetermined voltage endurance capability.And for some special pressure devices that is subject to, such as the driving stem stroke sleeve pipe of CRDM control rod drive mechanisms (CRD), capsul, pneumatic shell etc., its hydraulic testing has again certain specific (special) requirements, and in the process of boosting, pressure-loaded speed need be less than 3Mpa/min and record the pressure curve in pressure testing process.
Existing hydraulic equipment has several as follows:
1. manual pressure test pump
Manual pressure test pump is comprised of the pump housing, plunger, O-ring seal, operation valve, surplus valve, tensimeter, water tank etc.Plunger when carrying on handle, produces vacuum in the pump housing, water intaking valve is opened, and clear water enters the pump housing by inlet strainer, water inlet pipe, when the handle application of force presses down, water intaking valve is closed, and outlet valve backs down, output pressure water, and enter pressurized device, and carry out and so forth work, realize the pressure testing of rated pressure.Working pressure can reach 80MPa, is applicable to 0 ~ 80MPa with the interior hydraulic testing.
But manual pressure test pump is manual operation, and maximum flow only reaches 40ML/ time, and efficiency is low, is not suitable for the hydraulic testing of the product that cavity volume is larger (as capsul, driving stem stroke sleeve pipe), and can not records pressure curve in process of the test.
2. electronic test pump
Motor test pump belongs to reciprocating plunger pump, and motor actuation plunger drives slide block movement and then water is injected and is subject to pressure device, makes pressure increase gradually.This machine is comprised of the pump housing, switch, tensimeter, water tank, motor etc.
Electronic test pump is high than the large work efficiency of manual pressure test pump flow, but its pressure-loaded speed much larger than 3Mpa/min, and pressure-loaded speed is uncontrollable, cannot record pressure curve simultaneously.
3. computer high pressure test macro
Computer high pressure test macro is to adopt microcomputerized control technology, the electromechanical integration test unit that variable-frequence governor and motor and water pump are combined.Thereby by the output frequency of microcomputer automatic control frequency converter, regulate the rotating speed of pump motor, realize the closed loop adjustment of user's pipe network water pressure.By pressure transducer and microcomputer record, can realize the record of pressure curve in pressure testing process.Computer high pressure test macro can meet the special hydraulic testing requirements that are subject to pressure device such as driving stem stroke sleeve pipe, capsul, pneumatic shell, but its high cost, and ordinary enterprises cannot be born.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of efficiency high, and pressure-loaded speed is controlled, can record pressure curve, and pressure-loaded controllable type hydraulic equipment with low cost.
The purpose of this utility model is achieved through the following technical solutions:
Pressure-loaded controllable type hydraulic equipment, comprise manual pressure test pump, motor test pump, high-pressure stop valve, accumulator A, tensimeter, pressure unit and registering instrument, manual pressure test pump is connected with the import of accumulator A by inlet channel with motor test pump, the outlet of accumulator A is connected with outlet conduit, tensimeter is arranged on outlet conduit, pressure unit is connected with tensimeter, and registering instrument is connected with pressure unit, and high-pressure stop valve is arranged at the exit of motor test pump.
Principle of work of the present utility model is as follows:
Outlet conduit is connected with being subject to pressure device.First, start motor test pump to accumulator A and be subject to pump water in pressure device, making hydraulic pressure approach pressure test pressure, closing high-pressure stop valve, and then suppress to pressure test pressure by manual pressuring pump.In pressure process, pressure unit is obtained the force value of different time sections by tensimeter, then the force value of different time sections is sent to registering instrument generation pressure curve.
Motor test pump flow is large, and loading efficiency is high, has overcome the deficiency of independent use manual pressure test pump pressure-loaded inefficiency.The flow of manual pressure test pump is less, and pressure-loaded speed is controlled, has overcome the excessive and uncontrollable deficiency of pressure-loaded speed of independent use motor test pump pressure-loaded speed.Meanwhile, the utility model can also obtain pressure curve, meets some special pressure devices that are subject to, such as the requirement of the hydraulic testing of the driving stem stroke sleeve pipe of CRDM control rod drive mechanisms (CRD), capsul, pressure pipe etc.
In addition, the utility model adopts existing device combination to form, with low cost.
Further, also comprise accumulator B, accumulator B is arranged between the outlet and described outlet conduit of described accumulator A, and the outlet of described accumulator A is connected with the import of accumulator B, and the outlet of accumulator B is connected with described outlet conduit.
In the hydraulic testing, the formula of pressure added value is as follows:
P1=pgh；
Wherein, high, the g=9.8N/Kg of P1=container pressure, p=vessel liquid density, h=liquid;
When injecting volume in the pilot system that is V to volume definite value and be the liquid of △ V, liquid in container density changes;
P2=P1V+P1△V/V=P1((V+△V)/V)=?p((V+△V)/V)gh；
Wherein, the container pressure after P2=filling liquid;
△P=P2－P1=P1((V+△V)/V)gh－pgh=p(△V/V)gh；
Wherein, △ P=pressure added value.
The controllability that will further increase pressure-loaded speed, need to reduce △ P, thereby reduces pressure-loaded speed.From above-mentioned formula, can find out, increase V and can realize above-mentioned purpose.Therefore, increase accumulator B, increase the utility model volume.
Further, also comprise the safety valve being arranged on described inlet channel, safety valve is between described high-pressure stop valve and described accumulator A.When hydraulic pressure exceeds the upper pressure limit of the hydraulic testing, safety valve releasing pressure automatically, thus prevent that the hydraulic testing is to being subject to pressure device to cause damage.
In sum, the utility model has the advantage of:
1. motor test pump and manual pressure test pump are used in conjunction with, overcome the deficiency of independent use manual pressure test pump pressure-loaded inefficiency, overcome the excessive and uncontrollable deficiency of pressure-loaded speed of independent use motor test pump pressure-loaded speed, and can record pressure curve;
2. the utility model volume is larger, has further increased the controllability of pressure-loaded speed;
3. safety valve is set, prevents that the hydraulic testing is to being subject to pressure device to cause damage.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present utility model, will be briefly described describing the required accompanying drawing of using in the utility model embodiment below.Apparent, the accompanying drawing in the following describes is only some embodiment that record in the utility model, for a person skilled in the art, in the situation that not paying creative work, can also, according to accompanying drawing below, obtain other accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Wherein, the parts title that Reference numeral is corresponding is as follows:
1-manual pressure test pump, 2-motor test pump, 3-high-pressure stop valve, 4-safety valve, 5-accumulator A, 6-tensimeter, 7-pressure unit, 8-registering instrument, 9-accumulator B.
Embodiment
In order to make those skilled in the art understand better the utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out to clear, complete description.Apparent, embodiment described below is only the part in the utility model embodiment, rather than all.The embodiment recording based on the utility model, other all embodiment that those skilled in the art obtain in the situation that not paying creative work, all in the scope of the utility model protection.
Embodiment:
Pressure-loaded controllable type hydraulic equipment, comprise manual pressure test pump 1, motor test pump 2, high-pressure stop valve 3, accumulator A5, tensimeter 6, pressure unit 7 and registering instrument 8, manual pressure test pump 1 is connected with the import of accumulator A5 by inlet channel with motor test pump 2, the outlet of accumulator A5 is connected with outlet conduit, tensimeter 6 is arranged on outlet conduit, pressure unit 7 is connected with tensimeter 6, registering instrument 8 is connected with pressure unit 7, and high-pressure stop valve 3 is arranged at the exit of motor test pump 2.
During use, outlet conduit is connected with being subject to pressure device.First, start motor test pump 2 to accumulator A5 and be subject to pump water in pressure device, making hydraulic pressure approach pressure test pressure, and then suppress to pressure test pressure by manual pressuring pump 1.In pressure process, pressure unit 7 is obtained the force value of different time sections by tensimeter 6, then the force value of different time sections is sent to registering instrument 8 generates pressure curve.
In order further to increase the controllability of pressure-loaded speed, reduce pressure-loaded speed, can also set up accumulator B9, accumulator B9 is arranged between the outlet and described outlet conduit of described accumulator A5, the outlet of described accumulator A5 is connected with the import of accumulator B9, and the outlet of accumulator B9 is connected with described outlet conduit.
In order to prevent that the hydraulic testing is to being subject to pressure device to cause damage, improve the security of the present embodiment, can also increase the safety valve 4 being arranged on described inlet channel, safety valve 4 is between described high-pressure stop valve 3 and described accumulator A5.When hydraulic pressure exceeds the upper pressure limit of the hydraulic testing, safety valve 4 releasing pressure automaticallies, thus prevent that the hydraulic testing is to being subject to pressure device to cause damage.
As mentioned above, just can realize preferably the utility model.
Claims (3)
1. pressure-loaded controllable type hydraulic equipment, it is characterized in that: comprise manual pressure test pump (1), motor test pump (2), high-pressure stop valve (3), accumulator A(5), tensimeter (6), pressure unit (7) and registering instrument (8), manual pressure test pump (1) with motor test pump (2) by inlet channel and accumulator A(5) import be connected, accumulator A(5) outlet be connected with outlet conduit, tensimeter (6) is arranged on outlet conduit, pressure unit (7) is connected with tensimeter (6), registering instrument (8) is connected with pressure unit (7), high-pressure stop valve (3) is arranged at the exit of motor test pump (2).
2. pressure-loaded controllable type hydraulic equipment according to claim 1, it is characterized in that: also comprise accumulator B(9), accumulator B(9) be arranged at described accumulator A(5) outlet and described outlet conduit between, described accumulator A(5) outlet and accumulator B(9) import be connected, accumulator B(9) outlet be connected with described outlet conduit.
3. pressure-loaded controllable type hydraulic equipment according to claim 1 and 2, is characterized in that: also comprise the safety valve (4) being arranged on described inlet channel, safety valve (4) is positioned at described high-pressure stop valve (3) and described accumulator A(5) between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772546.XU CN203561560U (en) | 2013-11-29 | 2013-11-29 | Controllable pressure load hydraulic pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772546.XU CN203561560U (en) | 2013-11-29 | 2013-11-29 | Controllable pressure load hydraulic pressure device |
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| Publication Number | Publication Date |
|---|---|
| CN203561560U true CN203561560U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320772546.XU Expired - Lifetime CN203561560U (en) | 2013-11-29 | 2013-11-29 | Controllable pressure load hydraulic pressure device |
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| CN (1) | CN203561560U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865930A (en) * | 2016-04-11 | 2016-08-17 | 中南大学 | Test device for realizing loading and unloading of different stress paths in rock holes |
| CN106644311A (en) * | 2016-11-30 | 2017-05-10 | 北京特种机械研究所 | Electric pressure testing tool |
| CN108489816A (en) * | 2018-03-16 | 2018-09-04 | 恺信国际检测认证有限公司 | A kind of depth of water compression testing device and application method |
| CN109269950A (en) * | 2018-09-29 | 2019-01-25 | 上海峥兴环保科技有限公司 | A kind of sludge index automatic monitoring system |
-
2013
- 2013-11-29 CN CN201320772546.XU patent/CN203561560U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865930A (en) * | 2016-04-11 | 2016-08-17 | 中南大学 | Test device for realizing loading and unloading of different stress paths in rock holes |
| CN105865930B (en) * | 2016-04-11 | 2018-06-29 | 中南大学 | A kind of experimental rig realized in rock pore different stress paths and add off-load |
| CN106644311A (en) * | 2016-11-30 | 2017-05-10 | 北京特种机械研究所 | Electric pressure testing tool |
| CN108489816A (en) * | 2018-03-16 | 2018-09-04 | 恺信国际检测认证有限公司 | A kind of depth of water compression testing device and application method |
| CN109269950A (en) * | 2018-09-29 | 2019-01-25 | 上海峥兴环保科技有限公司 | A kind of sludge index automatic monitoring system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |