CN208966772U - A kind of hydraulic pipeline voltage-withstand test circuit - Google Patents
A kind of hydraulic pipeline voltage-withstand test circuit Download PDFInfo
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- CN208966772U CN208966772U CN201821715927.3U CN201821715927U CN208966772U CN 208966772 U CN208966772 U CN 208966772U CN 201821715927 U CN201821715927 U CN 201821715927U CN 208966772 U CN208966772 U CN 208966772U
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- outlet pipe
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Abstract
The utility model discloses a kind of hydraulic pipeline voltage-withstand test circuits, belong to pipeline test loop field, a kind of hydraulic pipeline voltage-withstand test circuit disclosed by the utility model, including voltage-limiting protection branch, oil pumping device；The oil outlet of oil pumping device is provided with oil outlet pipe, and voltage-limiting protection branch is in parallel with oil outlet pipe, and one end of pipeline to be tested is connected to oil outlet pipe.By connecting a voltage-limiting protection branch in oil outlet pipe; when pressure is more than the maximum value of voltage-limiting protection branch setting; section hydraulic oil can flow back to fuel tank from voltage-limiting protection branch, so that the pressure of voltage-withstand test is not too big, can be very good to ensure the safety during voltage-withstand test.
Description
Technical field
The utility model relates to voltage-withstand test field more particularly to a kind of hydraulic pipeline voltage-withstand test circuits.
Background technique
Hydraulic drive is to transmit power using the pressure energy of liquid using liquid as working media, this requires that liquid
The voltage endurance capability that pressure pipeline needs to have certain, due to the difference of production technology, it cannot be guaranteed that every hydraulic pipeline is attained by
Preset pressure voltage.Therefore it needs to determine whether the hydraulic pipeline can reach default pressure resistance by testing hydraulic pipeline
Ability.
Existing pressure resistant testing device is generally relatively simple, test pressure be not easily controlled, if test pressure change compared with
Greatly, the maximum value that can be born beyond pipeline is easy to cause pipeline breaking, generates dangerous.
Utility model content
In order to overcome the drawbacks of the prior art, the technical problem to be solved by the utility model is to propose a kind of hydraulic tube
It road voltage-withstand test circuit, can when pressure is excessive by the maximum constraint of pressure in preset value by being provided with voltage-limiting protection branch
With releasing pressure automatically, the safety of voltage-withstand test is ensured.
For this purpose, the utility model uses following technical scheme:
A kind of hydraulic pipeline voltage-withstand test circuit provided by the utility model, including voltage-limiting protection branch, oil pumping device；Pump
The oil outlet of oily device is provided with oil outlet pipe, and voltage-limiting protection branch is in parallel with oil outlet pipe, one end of pipeline to be tested with go out
Oil pipe line connection.
The utility model preferably technical solution is that voltage-limiting protection branch is provided with overflow valve and Solenoid ball valve, overflow
The control terminal of valve is connected to the oil outlet of oil pumping device, and the effluent head of overflow valve is provided with oil returning tube, the oil outlet of overflow valve
It is connected to the oil inlet end of Solenoid ball valve, the oil outlet of Solenoid ball valve is connected to the middle position of oil outlet pipe.
The utility model preferably technical solution is that hydraulic pipeline voltage-withstand test circuit further includes fuel tank, fuel tank internal
It is provided with antiwear hydraulic oil, the oil absorbing end of oil pumping device is inserted under the liquid level of the antiwear hydraulic oil of fuel tank, the oil return pipe of overflow valve
Road is connected to fuel tank internal.
The utility model preferably technical solution is that hydraulic pipeline voltage-withstand test circuit further includes oil return filter branch,
One end of oil return filter branch is connected to the other end of pipeline to be tested, and the other end of oil return filter branch is connected to the interior of fuel tank
Portion.
The utility model preferably technical solution is, check valve is provided in oil outlet pipe, and check valve is located at pressure limiting guarantor
It protects between branch and two connecting pin of oil outlet pipe.
The utility model preferably technical solution is that oil pumping device includes plunger pump, motor, the power output end of motor
It is connect with the power intake of plunger pump, in the antiwear hydraulic oil of the oil absorbing end insertion fuel tank of plunger pump, the oil outlet of plunger pump
It is connect with oil outlet pipe.
The utility model preferably technical solution is that oil outlet pipe is provided with out oil cylinder, and oil cylinder is provided at least one out
A fuel-displaced port is provided with high-pressure opening ball valve on fuel-displaced port, and one end of pipeline to be tested is fixedly connected with fuel-displaced port.
The utility model preferably technical solution is, pressure detecting instrument is provided in oil outlet pipe.
The utility model preferably technical solution is, high-pressure ball valve is provided in oil outlet pipe, is also set in oil outlet pipe
It is in parallel with high-pressure ball valve to be equipped with check valve.
The utility model has the following beneficial effects:
A kind of hydraulic pipeline voltage-withstand test circuit provided by the utility model, including voltage-limiting protection branch, oil pumping device；Pump
The oil outlet of oily device is provided with oil outlet pipe, and voltage-limiting protection branch is in parallel with oil outlet pipe, one end of pipeline to be tested with go out
Oil pipe line connection.By connecting a voltage-limiting protection branch in oil outlet pipe, when pressure is more than the setting of voltage-limiting protection branch
When maximum value, section hydraulic oil can flow back to fuel tank from voltage-limiting protection branch, so that the pressure of voltage-withstand test is not too big, it can be very
The good safety ensured during voltage-withstand test.
Detailed description of the invention
Fig. 1 is the hydraulic pipeline voltage-withstand test circuit theory figure provided in specific embodiment of the present invention；
Fig. 2 is the schematic diagram of the plunger pump installation provided in specific embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the fuel feeding part provided in specific embodiment of the present invention；
In figure:
1, fuel tank；2, oil pumping device；21, plunger pump；22, motor；3, pressure detecting instrument；4, overflow valve；5, Solenoid ball valve；
6, check valve；7, high-pressure ball valve；9, go out oil cylinder；10, pipeline to be tested；11, oil return filter branch；12, oil outlet pipe；13, it limits
Pressure protection branch；14, oil returning tube；91, fuel-displaced port；92, high-pressure opening ball valve.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of hydraulic pipeline voltage-withstand test circuit provided in the present embodiment, including voltage-limiting protection branch
13, oil pumping device 2；The oil outlet of oil pumping device 2 is provided with oil outlet pipe 12, and voltage-limiting protection branch 13 and oil outlet pipe 12 are simultaneously
Connection, one end of pipeline 10 to be tested is connected to oil outlet pipe 12.By oil pumping device 2 by hydraulic oil be pressed into oil outlet pipe 12 to
Pressure limiting is connected on flowline in order to guarantee to test pressure without departing from pipeline pressure resistance maximum value into pipeline 10 to be tested
Branch 13 is protected, so that pressure can carry out pressure release from voltage-limiting protection branch 13, so that pressure-resistant after pressure is more than preset value
The available guarantee of safety in test process.
As shown in Figure 1, voltage-limiting protection branch 13 is provided with overflow valve 4 and Solenoid ball valve 5, the control terminal and pump of overflow valve 4
The oil outlet of oily device 2 is connected to, and the effluent head of overflow valve 4 is provided with oil returning tube 14, the oil outlet and Solenoid ball valve of overflow valve 4
5 oil inlet end connection, the oil outlet of Solenoid ball valve 5 are connected to the middle position of oil outlet pipe 12.Made by the effect of overflow valve 4
It obtains when pressure is more than the pressure that overflow valve 4 is arranged, hydraulic oil is returned in fuel tank 1 by the effluent head of overflow valve 4, while being limited
It presses and Solenoid ball valve 5 is set on protection branch 13, control the on-off of voltage-limiting protection branch 13, carrying out treating the test pressurization of pipeline 10
When, Solenoid ball valve 5 is opened to guarantee the hydraulic fluid flow rate into pipeline 10 to be tested, when pressure reaches preset value, closes electricity
Magnetic ball valve 5, so that the hydraulic oil in pipeline to be tested 10 will not flow back, convenient for the progress of pressure detecting.
As shown in Figure 1 and Figure 2, hydraulic pipeline voltage-withstand test circuit further includes fuel tank 1, and fuel tank 1 is internally provided with wear-resistant hydraulic
Oil, the oil absorbing end of oil pumping device 2 are inserted under the liquid level of the antiwear hydraulic oil of fuel tank 1, and the oil returning tube 14 of overflow valve 4 is connected to fuel tank
Inside 1.Further, hydraulic pipeline voltage-withstand test circuit further includes oil return filter branch 11, one end of oil return filter branch 11
It is connected to the other end of pipeline 10 to be tested, the inside of the other end connection fuel tank 1 of oil return filter branch 11.Antiwear hydraulic oil from
Fuel tank 1 enters oil pumping device 2, and when being more than preset pressure, section hydraulic oil flows back to fuel tank 1 from oil returning tube 14, and enters to be measured
The hydraulic oil in test tube road 10 needs to be filtered by oil return filter branch 11, guarantee hydraulic in fuel tank 1 due to being contaminated
Oil is in qualified cleannes.
Preferably, check valve 6 is provided in oil outlet pipe 12, check valve 6 is located at voltage-limiting protection branch 13 and oil outlet pipe
Between 12 liang of connecting pins.So that will not flow back from the hydraulic oil that voltage-limiting protection branch 13 flows out from flowline.
As shown in Fig. 2, oil pumping device 2 includes plunger pump 21, motor 22, power output end and the plunger pump 21 of motor 22
Power intake connection, plunger pump 21 oil absorbing end insertion fuel tank 1 antiwear hydraulic oil in, the oil outlet of plunger pump 21 with it is fuel-displaced
Pipeline 12 connects.Motor 22 drives plunger pump 21 to carry out oil suction, hydraulic oil is pressed into pipeline 10 to be tested, using plunger pump 21
The accessible rated value of pressure can be made larger, and the hydraulic fluid flow rate that plunger pump 21 provides is larger, for hydraulic pipeline
The time that voltage-withstand test reaches test pressure needs is shorter, working efficiency can be improved, while pressure and flow are all relatively more square
Just it adjusts.
As shown in figure 3, oil outlet pipe 12 is provided with out oil cylinder 9, oil cylinder 9 is provided with the fuel-displaced port 91 of at least one out,
High-pressure opening ball valve 92 is provided on fuel-displaced port 91, one end of pipeline 10 to be tested is fixedly connected with fuel-displaced port 91.It is fuel-displaced
End is adapted to the connection of various types of pipelines to be tested 10, and the setting of high-pressure opening ball valve 92 is so that reach test in pressure
When value, high-pressure opening ball valve 92 is closed, the pressure history of pipeline 10 to be tested is tested.
Preferably, pressure detecting instrument 3 is provided in oil outlet pipe 12.Whether reach desired value convenient for detection pressure.
Further, as shown in Figure 1, being provided with high-pressure ball valve 7 in oil outlet pipe 12, list is additionally provided in oil outlet pipe 12
It is in parallel with high-pressure ball valve 7 to valve 6.In order to avoid the hydraulic oil of oil outlet pipe 12 flows back, it is provided with high-pressure ball valve 7, it is resistance in progress
High-pressure ball valve 7 is just opened when pressure test.
The utility model is described with reference to the preferred embodiments, and those skilled in the art know, is not departing from this reality
In the case where with novel spirit and scope, various changes or equivalence replacement can be carried out to these features and embodiment.This reality
It is not limited to the particular embodiment disclosed with novel, other embodiments fallen into claims hereof all belong to
In the range of the utility model protection.
Claims (8)
1. a kind of hydraulic pipeline voltage-withstand test circuit, it is characterised in that: including voltage-limiting protection branch (13), oil pumping device (2)；Institute
The oil outlet for stating oil pumping device (2) is provided with oil outlet pipe (12), the voltage-limiting protection branch (13) and the oil outlet pipe
(12) in parallel, one end of pipeline (10) to be tested is connected to the oil outlet pipe (12)；
The voltage-limiting protection branch (13) is provided with overflow valve (4) and Solenoid ball valve (5), the control terminal of the overflow valve (4) with
The oil outlet of the oil pumping device (2) is connected to, and the effluent head of the overflow valve (4) is provided with oil returning tube (14), the overflow
The oil outlet of valve (4) is connected to the oil inlet end of the Solenoid ball valve (5), the oil outlet of the Solenoid ball valve (5) with it is described fuel-displaced
The middle position of pipeline (12) is connected to.
2. hydraulic pipeline voltage-withstand test according to claim 1 circuit, it is characterised in that:
Hydraulic pipeline voltage-withstand test circuit further includes fuel tank (1), and the fuel tank (1) is internally provided with antiwear hydraulic oil, institute
Under the liquid level for the antiwear hydraulic oil that the oil absorbing end for stating oil pumping device (2) is inserted into the fuel tank (1), the oil return of the overflow valve (4)
It is internal that pipeline (14) is connected to the fuel tank (1).
3. hydraulic pipeline voltage-withstand test according to claim 2 circuit, it is characterised in that:
It further include oil return filter branch (11), one end of the oil return filter branch (11) is another with the pipeline (10) to be tested
One end connection, the other end of the oil return filter branch (11) are connected to the inside of the fuel tank (1).
4. hydraulic pipeline voltage-withstand test according to claim 1 circuit, it is characterised in that:
Be provided with check valve (6) on the oil outlet pipe (12), the check valve (6) be located at the voltage-limiting protection branch (13) with
Between (12) two connecting pin of oil outlet pipe.
5. hydraulic pipeline voltage-withstand test according to claim 2 or 3 circuit, it is characterised in that:
The oil pumping device (2) includes plunger pump (21), motor (22), the power output end and the plunger of the motor (22)
The power intake connection of (21) is pumped, the oil absorbing end of the plunger pump (21) is inserted into the antiwear hydraulic oil of the fuel tank (1), institute
The oil outlet for stating plunger pump (21) is connect with the oil outlet pipe (12).
6. hydraulic pipeline voltage-withstand test according to claim 1 circuit, it is characterised in that:
The oil outlet pipe (12) is provided with out oil cylinder (9), and oil cylinder (9) out are provided with the fuel-displaced port of at least one
(91), be provided with high-pressure opening ball valve (92) on the fuel-displaced port (91), one end of pipeline (10) to be tested with it is described fuel-displaced
Port (91) is fixedly connected.
7. hydraulic pipeline voltage-withstand test according to claim 6 circuit, it is characterised in that:
Pressure detecting instrument (3) are provided on the oil outlet pipe (12).
8. hydraulic pipeline voltage-withstand test according to claim 1 circuit, it is characterised in that:
Be provided with high-pressure ball valve (7) on the oil outlet pipe (12), be additionally provided on the oil outlet pipe (12) check valve (6) with
The high-pressure ball valve (7) is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821715927.3U CN208966772U (en) | 2018-10-23 | 2018-10-23 | A kind of hydraulic pipeline voltage-withstand test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821715927.3U CN208966772U (en) | 2018-10-23 | 2018-10-23 | A kind of hydraulic pipeline voltage-withstand test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208966772U true CN208966772U (en) | 2019-06-11 |
Family
ID=66760235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821715927.3U Active CN208966772U (en) | 2018-10-23 | 2018-10-23 | A kind of hydraulic pipeline voltage-withstand test circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208966772U (en) |
-
2018
- 2018-10-23 CN CN201821715927.3U patent/CN208966772U/en active Active
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