CN203548388U - Hydraulic loading loop for multi-way valve - Google Patents

Hydraulic loading loop for multi-way valve Download PDF

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Publication number
CN203548388U
CN203548388U CN201320743733.5U CN201320743733U CN203548388U CN 203548388 U CN203548388 U CN 203548388U CN 201320743733 U CN201320743733 U CN 201320743733U CN 203548388 U CN203548388 U CN 203548388U
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China
Prior art keywords
valve
oil
oil circuit
hydraulic
way
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Chinese (zh)
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邓东
杨阳
周启迪
魏星
王佩
张劲
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Abstract

The utility model provides a hydraulic loading loop for a multi-way valve. The hydraulic loading loop comprises an oil tank, a hydraulic pump, the multi-way valve, a bridge type loop, a loading valve and a flow meter, wherein the bridge type loop is composed of a plurality of one-way valves and capable of carrying out bidirectional oil flowing. The multi-way valve comprises a plurality of tested valve plates and a plurality of sets of on-off valves. An oil inlet and an oil outlet of the hydraulic pump are connected with the oil tank and first oil inlets of the tested valve plates respectively, oil return openings of the tested valve plates are communicated with the oil tank, each set of on-off valves control the on-off state of an oil way between a first working oil opening of one tested valve plate and a first oil flowing opening of the bridge type loop and the on-off state of an oil way between a second working oil opening of the tested valve plate and a second oil flowing opening of the bridge type loop, the flow meter is connected to an oil way between one set of on-off valves, and the loading valve is connected into the bridge type loop and located on an oil way between two oil-flowing one-way valves. The performance of bidirectional hydraulic oil flowing of any tested valve plate of the multi-way valve can be tested only by operating the states of the on-off valves, and the performance testing efficiency for the multi-way valve is improved.

Description

For the hydraulic loaded loop of multi-way valve
Technical field
The utility model relates to hydraulic transmission field, particularly, relates to a kind of hydraulic loaded loop for hydraulic multitandem valve performance test.
Background technique
The stability of the flow-pressure characteristic of hydrovalve to engineering machinery, working efficiency etc. have material impact, therefore in the processes such as construction machinery production or maintenance, all need the hydraulic performance of each hydrovalve to test, to guarantee that hydrovalve has reached hydraulic pressure designing requirement.Especially, multi-way valve with it compact structure, lightweight, the pressure loss is little, pressure is high, flow is large, realize the features such as performance is many is widely used in the engineering machinery such as excavator, hoist.How to facilitate, accurately, fast test the non-easy thing of hydraulic performance of multi-way valve.
In prior art, generally according to GB JBT8729[1] .2-1998 " hydraulic multitandem valve test method ", carries out testing property to tested multi-way valve.Its oil hydraulic circuit 100 as shown in Figure 1, comprises two independently hydraulic loaded loops, has represented two kinds of different hydraulic loaded modes of the prior art.Particularly, this oil hydraulic circuit 100 comprises fuel tank 1, oil hydraulic pump 2, the first tested valve block 3, the second tested valve block 4, the first one-way throttle valve 6, the second one-way throttle valve 7, relief valve 8, flowmeter 9 and one-way valve 10, wherein, the filler opening of oil hydraulic pump 2 is connected with fuel tank 1, two oil inlet P of the oil outlet of oil hydraulic pump 2 and the first tested valve block 3, C, and with two oil inlet P of the second tested valve block 4, C connects, the first actuator port A of the first tested valve block 3 is connected with the second actuator port B, relief valve 8, flowmeter 9 and one-way valve 10 are connected in turn on the oil circuit between the first actuator port A and the second actuator port B of the first tested valve block 3, the first actuator port A of the second tested valve block 4 is connected with the second actuator port B, and the first one-way throttle valve 6 and the second one-way throttle valve 7 are connected in turn on the oil circuit between the first actuator port A and the second actuator port B of the second tested valve block 4.And wherein, multi-way valve comprises that the first loading unit of the first above-mentioned tested valve block 3 and the tested valve block 3 of the second tested valve block 4, the first comprises relief valve 8, flowmeter 9 and one-way valve 10; The second loading unit of the second tested valve block 4 comprises the first one-way throttle valve 6 and the second one-way throttle valve 7.
When the hydraulic performance of the first tested valve block 3 is tested, the first tested valve block 3 of multi-way valve commutates, the hydraulic oil that oil hydraulic pump 2 is exported flows into the second actuator port B of the first tested valve block 3 through the first actuator port A of the first tested valve block 3 by the first loading unit, thereby first oil inlet P of having tested the first tested valve block 3 is to the hydraulic performance of the first actuator port A on it.But, one-way valve 10 can only be realized hydraulic oil from the first actuator port A of the first tested valve block 3 to the second actuator port B one-way flow it, if first oil inlet P of testing the first tested valve block 3 is to the second actuator port B hydraulic performance on it, must change this oil hydraulic circuit 100, this hydraulic loaded mode wastes time and energy while causing execute-in-place.
When the hydraulic performance of the second tested valve block 4 is tested, the second tested valve block 4 of multi-way valve commutates, the hydraulic oil that oil hydraulic pump 2 is exported flows into its second actuator port B through the first actuator port A of the second tested valve block 4 by the second loading unit, wherein, the first one-way throttle valve 6 loads to the mobile hydraulic oil of its second actuator port B direction the first actuator port A from the second tested valve block 4, thereby first oil inlet P of having tested the second tested valve block 4 is to the hydraulic performance of the first actuator port A on it; Correspondingly, the second one-way throttle valve 7 loads to the mobile hydraulic oil of its first actuator port A direction the second actuator port B from the second tested valve block 4, thereby first oil inlet P of having tested the second tested valve block 4 is to the hydraulic performance of the second actuator port B on it.Although this hydraulic loaded mode need not be changed oil hydraulic circuit, just can realize the loading to the two-way flow of tested valve block hydraulic oil, but this hydraulic loaded mode is to have adopted two one-way throttle valves respectively the running of hydraulic power oil of both direction to be loaded, and causes experimentation cost high.In addition, to each tested valve block of multi-way valve, all need to install additional a loading unit, cause experimentation cost too high and repacking overlong time.
Given this, be necessary to provide a kind of novel hydraulic loaded loop for multi-way valve, to overcome or to alleviate above-mentioned defect.
Model utility content
The purpose of this utility model is to provide a kind of hydraulic loaded loop for multi-way valve, while making to carry out multi-way valve performance test, simple to operate and unified, and can save test period.
To achieve these goals, the hydraulic loaded loop for multi-way valve that the utility model provides comprise fuel tank, oil hydraulic pump, multi-way valve, multiple one-way valve composition can two-way oil bridge type return, charge valve, flowmeter; Wherein, described multi-way valve comprises some tested valve blocks, and the filler opening of described oil hydraulic pump is connected with the first filler opening of described fuel tank and each described tested valve block respectively with oil outlet, and the return opening of each described tested valve block is communicated with described fuel tank; Hydraulic loaded loop also comprises and described some tested valve blocks some groups of on-off valves one to one, the on off operating mode of the first actuator port of a described tested valve block of one group of on-off valve control and the second actuator port oil circuit respectively and between the first logical hydraulic fluid port and the second logical hydraulic fluid port of described bridge type return; And, when a described tested valve block is communicated with described bridge type return, described tested valve block comprises the first working state and the second working state, under described the first working state, hydraulic oil flows to the second actuator port from the first actuator port of described tested valve block, under described the second working state, hydraulic oil flows to described the first actuator port from described second actuator port of described tested valve block; Described flowmeter is connected to described in one group on the oil circuit between on-off valve, and described charge valve is connected in described bridge type return and on the oil circuit between the described one-way valve of two phase intercommunication oil.
Preferably, described bridge type return comprises the first oil circuit, the second oil circuit, the 3rd oil circuit, the 4th oil circuit and the 5th oil circuit, described the first oil circuit and described the second oil circuit are communicated in the first tie point, described the 3rd oil circuit and described the 4th oil circuit are communicated in the second tie point, described the 5th oil circuit is communicated with described the first tie point and described the second tie point, the first logical hydraulic fluid port of described bridge type return is communicated in the 3rd tie point place of described the second oil circuit and described the 3rd oil circuit connection, the second logical hydraulic fluid port of described bridge type return is communicated in the 4th tie point place of described the first oil circuit and described the 4th oil circuit connection, the first one-way valve be arranged on described the first oil circuit and one-way conduction described in the first tie point and the described second logical hydraulic fluid port, the second one-way valve be arranged on described the second oil circuit and one-way conduction described in the first tie point and the described first logical hydraulic fluid port, the 3rd one-way valve be arranged on described the 3rd oil circuit and one-way conduction described in the first logical hydraulic fluid port and described the second tie point, the 4th one-way valve be arranged on described the 4th oil circuit and one-way conduction described in the second logical hydraulic fluid port and described the second tie point.
Preferably, described charge valve is connected on the 5th oil circuit, and the filler opening of described charge valve communicates with described the second tie point, and the oil outlet of described charge valve communicates with described the first tie point.
Preferably, described flowmeter is connected on the 5th oil circuit, and between described the second tie point and the filler opening of described charge valve.
Preferably, described hydraulic loaded loop also comprises filter, and described filter is connected on the 5th oil circuit, and between described the second tie point and the filler opening of described flowmeter.
Preferably, described hydraulic loaded loop can also comprise pressure gauge, on the oil circuit between the second logical hydraulic fluid port that described pressure gauge is connected to described bridge type return and described some groups of on-off valves and/or be connected on the first oil circuit leading between hydraulic fluid port and described some groups of on-off valves of described bridge type return.
Preferably, described charge valve is relief valve or throttle valve.
Preferably, described charge valve comprises two relief valves that are connected in parallel, and described in one of them, relief valve is small flow relief valve, and wherein described in another, relief valve is large flow relief valve; Or described charge valve comprises two throttle valve that are connected in parallel, and described in one of them, throttle valve is small flow throttle valve, and wherein described in another, throttle valve is large flow throttle valve.
Preferably, each is organized described on-off valve and is stop valve.
Preferably, the each described tested valve block of described multi-way valve is three six-way valve sheets, each described tested valve block also comprises the second filler opening and bypass hydraulic fluid port, described the second filler opening is connected with the oil outlet of described oil hydraulic pump, described bypass hydraulic fluid port is connected with described fuel tank, under described the first working state and described the second working state, described the second filler opening and the cut-off of described bypass hydraulic fluid port.
Pass through technique scheme, because the first actuator port of each tested valve block of multi-way valve is all connected with bridge type return by on-off valve with the second work hydraulic fluid port, and flowmeter and charge valve are all connected in the middle of bridge type return, make only by operation on-off valve, just can realize the arbitrary tested valve block in multi-way valve is carried out to testing property, and without other operations, just can realize the loading experiment of tested valve block bidirectional hydraulic oil flow, can effectively promote efficiency and the accuracy of multi-way valve performance test.
Other feature and advantage of the present utility model are described in detail the embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the principle schematic in the hydraulic loaded loop of the multiplex multi-way valve of prior art; And
Fig. 2 is the principle schematic in the hydraulic loaded loop of the multiplex multi-way valve that provides of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
In optimal way of the present utility model, as shown in Figure 2, the utility model provides a kind of hydraulic loaded loop 200 for multi-way valve, comprise fuel tank 21, oil hydraulic pump 22, multi-way valve 23, multiple one-way valve composition can two-way oil bridge type return 24, charge valve 25, flowmeter 27, wherein, multi-way valve 23 comprises some tested valve blocks, the filler opening of oil hydraulic pump 2 is connected with the first oil inlet P of fuel tank 21 and each tested valve block respectively with oil outlet, and the oil return inlet T of each tested valve block is communicated with fuel tank 21; This hydraulic loaded loop 200 also comprise with some tested valve blocks one to one 26, one groups of on-off valves 26 of some groups of on-off valves control the on off operating mode of the first actuator port A of a tested valve block and the oil circuit of the second actuator port B respectively and between the first logical hydraulic fluid port E and the second logical hydraulic fluid port F of bridge type return 24; And, when a tested valve block is communicated with bridge type return 24, this tested valve block comprises the first working state and the second working state, under the first working state, hydraulic oil flows to the second actuator port B from the first actuator port A of this tested valve block, under the second working state, hydraulic oil flows to the first actuator port A from the second actuator port B of this tested valve block; Flowmeter 27 is connected on one group of oil circuit between on-off valve 26, and charge valve 25 is connected in bridge type return 24 and on the oil circuit between the one-way valve of two phase intercommunication oil.
In such scheme, the on-load pressure in adjustable this hydraulic loaded loop 200 of charge valve 25, flowmeter 27 is measured the corresponding uninterrupted in this hydraulic loaded loop 200, by a series of pressure and the flow of test, can test out the hydraulic performance of multi-way valve 23, thereby judge whether this multi-way valve 23 meets hydraulic pressure designing requirement.Wherein, by one group of on-off valve 26, control the first actuator port A of multi-way valve 23 each tested valve block and the connected state of the oil circuit of the second actuator port B respectively and between the first logical hydraulic fluid port E and the second logical hydraulic fluid port F of bridge type return 24, and on the oil circuit between one group of on-off valve 26, be connected with flowmeter 27, in bridge type return 24, connect charge valve 25, make the arbitrary tested valve block in multi-way valve 23 carry out hydraulic performance test and all only need to operate the state of one group of on-off valve 26, open the one group of on-off valve 26 being connected on the tested valve block that will carry out testing experiment, close the on-off valve 26 being connected on other tested valve blocks, simplified operating process, thereby can save the test time, can also improve the accuracy of test simultaneously, and by bridge type return 24 that can two-way oil, can guarantee between the first actuator port A of each tested valve block and the second actuator port B that hydraulic oil can two-way flow, and without again changing hydraulic circuit in test process and carrying out other extra operations, just can realize and divide to the first oil inlet P of each tested valve block the hydraulic performance test that is clipped to two actuator port A, B, can save experimentation cost.
Particularly, in the present embodiment, as shown in Figure 2, the each tested valve block of multi-way valve 23 all can be set to three six-way valve sheets, it first oil inlet P comprising, the second filler opening C are all connected with the oil outlet of oil hydraulic pump 22, oil return inlet T is connected with fuel tank 21, and the first actuator port A is connected with the second working oil B, and bypass hydraulic fluid port D is connected with fuel tank 21.Like this, when the tested valve block of multi-way valve 23 is during in left position, the hydraulic oil flowing out from oil hydraulic pump 22 from the first oil inlet P through the first actuator port A, flow to the second actuator port B, flow back to again fuel tank 21, wherein bypass hydraulic fluid port D cut-off, now can test fluid force feed flows to the hydraulic performance of the first actuator port A from the first oil inlet P; When the tested valve block of multi-way valve 23 is during in right position, the hydraulic oil flowing out from oil hydraulic pump 22 from the first oil inlet P through the second actuator port B, flow to the first actuator port A, flow back to again fuel tank 21, wherein bypass hydraulic fluid port D cut-off, now can test fluid force feed flows to the hydraulic performance of the second actuator port B from the first oil inlet P; When the tested valve block of multi-way valve 23 is during in meta, the first actuator port A and the second actuator port B cut-off, the hydraulic oil that oil hydraulic pump 22 flows out enters the second filler opening C and directly flows back to fuel tank 21 through bypass hydraulic fluid port D, now, this tested valve block is not carried out to testing experiment.
Below only as an example of the multi-way valve 23 that comprises two tested valve blocks example, carry out the explanation of technological scheme, but this does not limit the concrete number of the tested valve block of multi-way valve 23 in the utility model, and for convenience of description, in the present embodiment, spy is 26a by the one group of on-off valve label being connected on the first tested valve block 231, and be 26b by the one group of on-off valve label being connected on the second tested valve block 232, other situations are by that analogy.
In the present embodiment, multi-way valve 23 comprises the first tested valve block 231 and the second tested valve block 232, operation to two tested valve blocks 231,232 is separate, when carrying out testing experiment, both independently carry out, therefore in the time will carrying out testing experiment to the first tested valve block 231, by one group of on-off valve 26a on the oil circuit of opening between the first actuator port A and the second actuator port B of the first tested valve block 231, and close one group of on-off valve 26b on the oil circuit between the first actuator port A and the second actuator port B of the second tested valve block 232, otherwise anti-.
Noticeable, in the utility model, when the some tested valve block in multi-way valve 23 is tested, by closing the one group of on-off valve 26 connecting on other tested valve blocks, can also make test structure more accurate, because by multi-way valve 23 one of tested valve block, for example, when the first tested valve block 231 is tested, the second tested valve block 232 will be got back to meta state under the effect of spring force, now, one group of on-off valve 26b on the oil circuit being connected between two actuator ports of the second tested valve block 232 is closed, thereby can stop hydraulic oil from the one group of on-off valve 26a opening, to enter the first actuator port A or the second actuator port B of the second tested valve block 232, can avoid like this these hydraulic oil through bypass hydraulic fluid port D, directly to flow back to fuel tank 21 from the second filler opening C of the second tested valve block 232, so that cause the hydraulic oil that enters the first tested valve block 231 to reduce, and affect test result.
In order to simplify the operability of testing experiment, the one group of on-off valve 26 being wherein connected on the oil circuit between the first actuator port A and the second actuator port B of each tested valve block is stop valve, can facilitate testing ground to carry out the conducting of manual switchover stop valve and the state blocking.Certainly in other situations, on-off valve 26 can for bi-bit bi-pass solenoid directional control valve etc., other control switch valve easily.
Further particularly, in the present embodiment, bridge type return 24 comprises the first oil circuit, the second oil circuit, the 3rd oil circuit, the 4th oil circuit and the 5th oil circuit, the first oil circuit and the second oil circuit are communicated in the first tie point S1, the 3rd oil circuit and the 4th oil circuit are communicated in the second tie point S2, the 5th oil circuit is communicated with the first tie point S1 and the second tie point S2, the first logical hydraulic fluid port E of bridge type return 24 is communicated in the 3rd tie point S3 place of the second oil circuit and the connection of the 3rd oil circuit, and the second logical hydraulic fluid port F of bridge type return 24 is communicated in the 4th tie point S4 place of the first oil circuit and the connection of the 4th oil circuit; The first one-way valve 241 is arranged on the first oil circuit and one-way conduction the first tie point S1 and the second logical hydraulic fluid port F, the second one-way valve 242 is arranged on the second oil circuit and one-way conduction the first tie point S1 and the first logical hydraulic fluid port E, the 3rd one-way valve 243 is arranged on the 3rd oil circuit and the logical hydraulic fluid port E of one-way conduction first and the second tie point S2, and the 4th one-way valve 244 is arranged on the 4th oil circuit and the logical hydraulic fluid port F of one-way conduction second and the second tie point S2.
Like this, the bridge type return 24 of above-mentioned four one-way valves, 241,242,543,244 compositions can be realized two-way circulating of hydraulic oil, when hydraulic oil leads to hydraulic fluid port E by first of bridge type return 24 from the first actuator port A of multi-way valve 23, the first one-way valve 241 on the 3rd one-way valve 243 on the 3rd oil circuit, the 5th oil circuit, the first oil circuit, then by the second logical hydraulic fluid port F of bridge type return 24, flow into the second actuator port B of multi-way valve 23.Otherwise, when hydraulic oil leads to hydraulic fluid port F by second of bridge type return 24 from the second actuator port B of multi-way valve 23, the second one-way valve 242 on the 4th one-way valve 244 on the 4th oil circuit, the 5th oil circuit, the second oil circuit, then by the first logical hydraulic fluid port E of bridge type return 24, flow into the first actuator port A of multi-way valve 23.
Based on this, in the present embodiment, charge valve 25 is connected on the 5th oil circuit, and the filler opening of charge valve 25 communicates with the second tie point S2, the oil outlet of charge valve 25 communicates with the first tie point S1, meanwhile, and in order to guarantee to measure the accuracy of structure, flowmeter 27 also connects on the 5th oil circuit, and between the second tie point S2 and the filler opening of charge valve 25.By flowmeter 27 is arranged on charge valve 25 before, in the time of can avoiding adopting pilot control due to charge valve 25, and guide's oil return needs independent oil sump tank 21, and makes these oil returns by flowmeter 27, do not measured to cause measurement result on the low side.It should be noted that in the present embodiment, the concrete structure of charge valve 25 is not had to specific (special) requirements, as long as can load the mobile of hydraulic oil, as shown in Figure 2, charge valve 25 can be single relief valve.In some other embodiment, charge valve 25 can be also single throttle valve, and the present embodiment is not construed as limiting this.
Preferably, in the utility model, charge valve 25 can also be two relief valves or two throttle valve that are connected in parallel, now, one of them relief valve or throttle valve are chosen as to small flow relief valve or throttle valve, another relief valve or throttle valve are chosen as large flow relief valve or throttle valve, thereby when carrying out testing experiment, can be according to the multi-way valve of different nominal flow rates 23, in two relief valves or two throttle valve, select suitable hydraulic loaded loop 200 is loaded of flow, and carry out manually adjusting dead to another relief valve or throttle valve, can guarantee like this when regulating on-load pressure more accurate, make to regulate the process of continuous on-load pressure more controlled.Known ground, the charge valve 25 in the utility model can for various can be to mobile single valve or the combination valve block loading of hydraulic oil.
In addition, flowmeter 27 and the relief valve as charge valve 25 are all precision elements, therefore, in the present embodiment, this hydraulic loaded loop 200 can also comprise filter 28, and this filter 28 is connected on the 5th oil circuit, and between the second tie point S2 and the filler opening of described flowmeter 27.Thereby can filter protection to fluid, prevent from damaging flowmeter 27 and charge valve 25, make this hydraulic loaded loop 200 more reliability and durability.
In order to understand in real time the on-load pressure of setting up in this hydraulic loaded loop 200, this hydraulic loaded loop 200 can also comprise pressure gauge 29, pressure gauge 29 is connected on the second oil circuit leading between hydraulic fluid port F and some groups of on-off valves 26 of bridge type return 24, and/or pressure gauge 29 is connected on the first oil circuit leading between hydraulic fluid port E and some groups of on-off valves 26 of bridge type return 24, the on-load pressure of setting up while flowing from the first actuator port A to the second actuator port B with demonstration hydraulic oil, and/or show hydraulic oil from the second actuator port B to the first actuator port A flow time set up on-load pressure.
Further the working principle in the hydraulic loaded loop 200 to technique scheme describes below.
In the time need to making a service test to the tested valve block 231 of first of multi-way valve 23, first can make the first tested valve block 231 in illustrated left position by operation, and the second tested valve block 232 is returned to meta state under the effect of Returnning spring, then open one group of on-off valve 26a on the oil circuit between the first actuator port A and the second actuator port B of the first side valve sheet 231, close one group of on-off valve 26b on the oil circuit between the first actuator port A and the second actuator port B of the second side valve sheet 232, now, the hydraulic oil flowing out from oil hydraulic pump 22 is the first actuator port A through it from the first oil inlet P of the first tested valve block 231, through on-off valve 26a, flow to the first logical hydraulic fluid port E of bridge type return 24, then the 3rd one-way valve 243 on the 3rd oil circuit successively, filter 28 on the 5th oil circuit, flowmeter 27, after running of hydraulic power oil being loaded by charge valve 25 again, the first one-way valve 241 on the first oil circuit, the second logical hydraulic fluid port F of bridge type return 24, on-off valve 26a, flow to the second actuator port B of the first tested valve block 231, and finally flow back to fuel tank 21.Wherein flowmeter 27 can be measured the rate of discharge of the first actuator port A of the first tested valve block 231, pressure meter 29 demonstrates the on-load pressure that charge valve 25 is set up, and the first oil inlet P of so just having measured the first tested valve block 231 is to the hydraulic performance of the first actuator port A on it; When operation makes the first tested valve block 231 in illustrating right when position, same, can measure the hydraulic performance of the first tested valve block 231 first oil inlet P to the second actuator port B on it.Correspondingly, in the time of testing other tested valve blocks of multi-way valve 23, its working principle and above-mentioned similar, does not repeat them here.
To sum up, compared with the existing technology, the hydraulic loaded loop for multi-way valve that the utility model embodiment provides has obtained optimization, make only by operation on-off valve, just can realize the arbitrary tested valve block in multi-way valve is carried out to testing property, and without other operations, just can realize the loading experiment of tested valve block bidirectional hydraulic oil flow, can effectively promote efficiency and the accuracy of multi-way valve performance test.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (10)

1. the hydraulic loaded loop for multi-way valve, it is characterized in that, described hydraulic loaded loop (200) comprise fuel tank (21), oil hydraulic pump (22), multi-way valve (23), multiple one-way valve composition can two-way oil bridge type return (24), charge valve (25), flowmeter (27); Wherein, described multi-way valve (23) comprises some tested valve blocks, the filler opening of described oil hydraulic pump (2) is connected with first filler opening (P) of described fuel tank (21) and each described tested valve block respectively with oil outlet, and the return opening (T) of each described tested valve block is communicated with described fuel tank (21);
Described hydraulic loaded loop (200) also comprises and described some tested valve blocks some groups of on-off valves (26) one to one, and each organizes that described on-off valve (26) is controlled first actuator port (A) of corresponding tested valve block and the second actuator port (B) respectively and the first logical hydraulic fluid port (E) and second of described bridge type return (24) leads to the on off operating mode of the oil circuit between hydraulic fluid port (F);
And, when a described tested valve block is communicated with described bridge type return (24), described tested valve block comprises the first working state and the second working state, under described the first working state, hydraulic oil flows to the second actuator port (B) from first actuator port (A) of described tested valve block, under described the second working state, hydraulic oil flows to described the first actuator port (A) from described second actuator port (B) of described tested valve block;
Described flowmeter (27) is connected on the oil circuit between on-off valve described in a group (26), and described charge valve (25) is connected in described bridge type return (24) and on the oil circuit between the described one-way valve of two phase intercommunication oil.
2. hydraulic loaded according to claim 1 loop, it is characterized in that, described bridge type return (24) comprises the first oil circuit, the second oil circuit, the 3rd oil circuit, the 4th oil circuit and the 5th oil circuit, described the first oil circuit and described the second oil circuit are communicated in the first tie point (S1), described the 3rd oil circuit and described the 4th oil circuit are communicated in the second tie point (S2), described the 5th oil circuit is communicated with described the first tie point (S1) and described the second tie point (S2), the first logical hydraulic fluid port (E) of described bridge type return (24) is communicated in the 3rd tie point (S3) of described the second oil circuit and described the 3rd oil circuit connection and locates, the second logical hydraulic fluid port (F) of described bridge type return (24) is communicated in the 4th tie point (S4) of described the first oil circuit and described the 4th oil circuit connection and locates,
The first one-way valve (241) be arranged on described the first oil circuit and one-way conduction described in the first tie point (S1) and described second lead to hydraulic fluid port (F), the second one-way valve (242) be arranged on described the second oil circuit and one-way conduction described in the first tie point (S1) and described first lead to hydraulic fluid port (E), the 3rd one-way valve (243) be arranged on described the 3rd oil circuit and one-way conduction described in the first logical hydraulic fluid port (E) and described the second tie point (S2), the 4th one-way valve (244) be arranged on described the 4th oil circuit and one-way conduction described in the second logical hydraulic fluid port (F) and described the second tie point (S2).
3. hydraulic loaded according to claim 2 loop, it is characterized in that, described charge valve (25) is connected on described the 5th oil circuit, and the filler opening of described charge valve (25) communicates with described the second tie point (S2), the oil outlet of described charge valve (25) communicates with described the first tie point (S1).
4. hydraulic loaded according to claim 3 loop, is characterized in that, described flowmeter (27) is connected on the 5th oil circuit, and is positioned between described the second tie point (S2) and the filler opening of described charge valve (25).
5. hydraulic loaded according to claim 4 loop, it is characterized in that, described hydraulic loaded loop (200) also comprises filter (28), and described filter (28) is connected on the 5th oil circuit, and is positioned between described the second tie point (S2) and the filler opening of described flowmeter (27).
6. hydraulic loaded according to claim 4 loop, it is characterized in that, described hydraulic loaded loop (200) can also comprise pressure gauge (29), described pressure gauge (29) is connected on the second oil circuit leading between hydraulic fluid port (F) and described some groups of on-off valves (26) of described bridge type return (24), and/or described pressure gauge (29) is connected on the first oil circuit leading between hydraulic fluid port (E) and described some groups of on-off valves (26) of described bridge type return (24).
7. hydraulic loaded according to claim 1 loop, is characterized in that, described charge valve (25) is relief valve or throttle valve.
8. hydraulic loaded according to claim 1 loop, is characterized in that, described charge valve (25) comprises two relief valves that are connected in parallel, and described in one of them, relief valve is small flow relief valve, and wherein described in another, relief valve is large flow relief valve; Or described charge valve (25) comprises two throttle valve that are connected in parallel, and described in one of them, throttle valve is small flow throttle valve, and wherein described in another, throttle valve is large flow throttle valve.
9. according to the hydraulic loaded loop described in claim 1-8 any one, it is characterized in that, each is organized described on-off valve (26) and is stop valve.
10. hydraulic loaded according to claim 9 loop, it is characterized in that, the each described tested valve block of described multi-way valve (23) is three six-way valve sheets, each described tested valve block also comprises the second filler opening (C) and bypass hydraulic fluid port (D), described the second filler opening (C) is connected with the oil outlet of described oil hydraulic pump (22), described bypass hydraulic fluid port (D) is connected with described fuel tank (21), under described the first working state and described the second working state, described the second filler opening (C) and described bypass hydraulic fluid port (D) cut-off.
CN201320743733.5U 2013-11-21 2013-11-21 Hydraulic loading loop for multi-way valve Expired - Lifetime CN203548388U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545878A (en) * 2016-01-27 2016-05-04 武汉科技大学 Transient-pressure oil supply system for multi-way valve test stand
CN109458367A (en) * 2018-12-28 2019-03-12 江苏省机械研究设计院有限责任公司 A kind of hydraulic system for slag breaker
CN109506905A (en) * 2018-10-31 2019-03-22 西南交通大学 A kind of electro-hydraulic testing stand
CN112879366A (en) * 2020-12-31 2021-06-01 华中科技大学 Multifunctional full-sea-depth electric control integrated valve set
CN114198357A (en) * 2021-12-10 2022-03-18 湖北超星液压自动化有限公司 Bridge type manual hydraulic pump, hydraulic system and control method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545878A (en) * 2016-01-27 2016-05-04 武汉科技大学 Transient-pressure oil supply system for multi-way valve test stand
CN109506905A (en) * 2018-10-31 2019-03-22 西南交通大学 A kind of electro-hydraulic testing stand
CN109458367A (en) * 2018-12-28 2019-03-12 江苏省机械研究设计院有限责任公司 A kind of hydraulic system for slag breaker
CN109458367B (en) * 2018-12-28 2024-02-20 江苏省机械研究设计院有限责任公司 Hydraulic system for slag breaker
CN112879366A (en) * 2020-12-31 2021-06-01 华中科技大学 Multifunctional full-sea-depth electric control integrated valve set
CN114198357A (en) * 2021-12-10 2022-03-18 湖北超星液压自动化有限公司 Bridge type manual hydraulic pump, hydraulic system and control method

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