CN204610394U - A kind of hydraulic substation - Google Patents
A kind of hydraulic substation Download PDFInfo
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- CN204610394U CN204610394U CN201520312399.7U CN201520312399U CN204610394U CN 204610394 U CN204610394 U CN 204610394U CN 201520312399 U CN201520312399 U CN 201520312399U CN 204610394 U CN204610394 U CN 204610394U
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Abstract
The utility model provides a kind of hydraulic substation, is converted into secondary pressure for the system pressure exported by pumping plant, belongs to hydraulic regulation field.This hydraulic substation comprises main valve, hydraulic tubing and control circui mechanism, described main valve comprises valve core of main valve (20) and connects the main spool spring (23) of valve core of main valve (20) and main valve rear end cover (22), coordinate main spool spring (23) to carry out the movement of valve core of main valve in control bound (20) by control circui mechanism controls low-voltage solenoid valve 14 with high-pressure solenoid valve 11 break-make, thus control the connected relation between high-pressure channel, secondary pressure passage and drainback passage.By this device can realize high pressure oil from depressurization phase to low-pressure state, low pressure slowly switches to high pressure conditions, possesses emergent rapid pressure relief function simultaneously.
Description
Technical field
The utility model relates to a kind of hydraulic regulator, is specifically related to the hydraulic substation that a kind of secondary pressure is adjustable.
Background technique
In some hydraulic systems, need the high pressure oil that pumping plant exports by a kind of hydraulic equipment and carry out secondary pressure conversion, secondary pressure oil is utilized to control hydraulic actuator, utilize this hydraulic equipment frequently to carry out release, pressurization to secondary pressure, to meet the user demand of hydraulic system simultaneously.In some hydraulic loading systems, such as carry out the hydraulic loading system of some structural tests, when testing ground is in an emergency or hydraulic actuator breaks down, also need to carry out emergent unloading to hydraulic loading system, namely secondary pressure is needed to realize fast pressure relief, in order to avoid cause accidental destruction to testpieces, if not this hydraulic equipment and directly close oil hydraulic pump, then the system unload time is uncontrollable, and solving frequent pressurization, release problem by opening, closing oil hydraulic pump, efficiency is too low.
Model utility content
In order to solve the problem, the system pressure that pumping plant exports is converted into secondary pressure, realize secondary pressure from depressurization phase to low-pressure state, low-pressure state is to the slow switching of high pressure conditions, possess emergent rapid pressure relief function simultaneously, the utility model proposes a kind of hydraulic substation, comprising: main valve, hydraulic tubing and control the control circui mechanism that hydraulic oil in described hydraulic tubing flows to, wherein
Described main valve comprises main valve front end plug, valve core of main valve, valve body of main valve, main valve rear end cover and main spool spring, an oil pocket is formed by valve body of main valve, main valve front end plug and main valve rear end cover, and autonomous valve front end plug has pilot pressure passage, high-pressure channel, secondary pressure passage and drainback passage successively to main valve rear end cover on valve body of main valve, main valve rear end cover connects valve core of main valve by main spool spring, and valve core of main valve is positioned at described oil pocket;
Valve core of main valve is arranged to make described oil pocket be divided into the column structure of five separate chamber, comprise the chamber being communicated with described pilot pressure passage, be communicated with the chamber of described high-pressure channel, be communicated with the chamber of described secondary pressure passage, be communicated with the chamber of described drainback passage and the chamber at main spool spring place, the chamber at described main spool spring place passes through pipeline communication with the described chamber being communicated with secondary pressure passage, simultaneously, when valve core of main valve moves under main spool spring effect, the chamber of described connection high-pressure channel interconnects with the described chamber being communicated with secondary pressure passage, the chamber of described connection secondary pressure passage interconnects with the described chamber being communicated with drainback passage,
Described hydraulic tubing comprises high pressure pipe line, secondary pressure pipeline and oil returning tube, described high pressure pipe line connects described high-pressure channel, also connect the entrance of low voltage electromagnetic selector valve simultaneously, another entrance of low voltage electromagnetic selector valve connects described oil returning tube, the outlet of low voltage electromagnetic selector valve by pipeline successively with described pilot pressure passage, adjustable pollution discharge pipe device, the entrance of logical valve one end and high-voltage electromagnetic selector valve is connected, the outlet of high-voltage electromagnetic selector valve connects described oil returning tube by relief valve, the other end of logical valve connects described oil returning tube, described drainback passage connects described oil returning tube.
Preferably, valve core of main valve is provided with a slide block in the one end near main valve front end plug, and when described slide block slides in described oil pocket, the chamber of described connection pilot pressure passage does not have connectedness with the described chamber being communicated with high-pressure channel.
Further preferably, valve core of main valve comprises an intermediate mass, described intermediate mass and described slide block taper connection, and when valve core of main valve slides in oil pocket, the chamber of described connection secondary pressure passage has connectedness with the described chamber being communicated with high-pressure channel.
Preferably, guide's filter and damping D is provided with between described high pressure pipe line and low voltage electromagnetic selector valve.
Preferably, between described high pressure pipe line and described high-pressure channel, pressure gauge A is provided with; At described secondary pressure passage and described secondary pressure pipeline to being provided with pressure gauge B.
This model utility device advantage is as follows: can carry out secondary pressure output to pumping station system pressure, and can realize high pressure and the adjustment of low pressure two stage pressure, possess rapid pressure relief function, high low pressure switches steadily, impacts little simultaneously; There is the function absorbing hydraulic shock, instantaneous flow peak value can be provided for load end; There is oil filtrating function, clean oil sources can be provided for hydraulic system.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the utility model hydraulic substation.
Wherein, 1 is one-way valve A, and 2 is high pressure filter, 3 is pressure gauge A, and 4 is pressure gauge B, and 5 is high pressure accumulator, 6 is logical valve, and 7 is damping A, and 8 is one-way valve B, 9 is relief valve, and 10 is damping B, and 11 is high-voltage electromagnetic selector valve, 12 is adjustable pollution discharge pipe device, and 13 is damping C, and 14 is low voltage electromagnetic selector valve, 15 is guide's filter, 16 is oil-return accumulator, and 17 is one-way valve C, and 18 is damping D, 19 is main valve front end plug, 20 is valve core of main valve, and 21 is valve body of main valve, and 22 is main valve rear end cover, 23 is main spool spring, and 24 is pipeline.
Embodiment
Below in conjunction with accompanying drawing, the hydraulic substation involved by the utility model is described in further details.
The utility model hydraulic substation comprises main valve, hydraulic tubing and control the control circui mechanism that hydraulic oil in described hydraulic tubing flows to, as shown in Figure 1, described main valve comprises main valve front end plug 19, valve core of main valve 20, valve body of main valve 21, main valve rear end cover 22 and main spool spring 23, in the present embodiment, by valve body of main valve 21, main valve front end plug 19 and main valve rear end cover 22 form an oil pocket, and autonomous valve front end plug 19 has pilot pressure passage successively to main valve rear end cover 22 on valve body of main valve 21, high-pressure channel, secondary pressure passage and drainback passage, main valve rear end cover 22 connects valve core of main valve 20 by main spool spring 23, valve core of main valve 20 is positioned at described oil pocket.
As can be seen from Figure 1, above-mentioned valve core of main valve 20 is arranged to make described oil pocket be divided into the column structure of five separate chamber, comprise the chamber being communicated with described pilot pressure passage, be communicated with the chamber of described high-pressure channel, be communicated with the chamber of described secondary pressure passage, be communicated with the chamber of described drainback passage and the chamber at main spool spring 23 place, the chamber at described main spool spring 23 place is communicated with by pipeline 24 with the described chamber being communicated with secondary pressure passage, simultaneously, when valve core of main valve 20 moves under main spool spring 23 acts on, the chamber of described connection high-pressure channel interconnects with the described chamber being communicated with secondary pressure passage, the chamber of described connection secondary pressure passage interconnects with the described chamber being communicated with drainback passage, in the present embodiment, valve core of main valve 20 is provided with a slide block in the one end near main valve front end plug 19, when described slide block slides in described oil pocket, the chamber of described connection pilot pressure passage does not have connectedness with the described chamber being communicated with high-pressure channel, valve core of main valve 20 comprises an intermediate mass, described intermediate mass and described slide block taper connection, when valve core of main valve 20 slides in oil pocket, the chamber of described connection secondary pressure passage has connectedness with the described chamber being communicated with high-pressure channel, in the present embodiment, as shown in Figure 1, in the interval that high-pressure channel is corresponding with secondary pressure channel position, shown valve core of main valve 20 is designed to cone valve structure, can realize depressurization phase, steady switching between low-pressure state and high pressure conditions.
Should be understood that, this valve core of main valve 20 provides pressure to think except main spool spring 23, also provides thrust by the different hydraulic oil in each chamber.Described hydraulic tubing comprises high pressure pipe line, secondary pressure pipeline and oil returning tube, described high pressure pipe line connects described high-pressure channel, also connect the entrance of low voltage electromagnetic selector valve 14 simultaneously, another entrance of low voltage electromagnetic selector valve 14 connects described oil returning tube, the outlet of low voltage electromagnetic selector valve 14 by pipeline successively with described pilot pressure passage, adjustable pollution discharge pipe device 12, the entrance of logical valve 6 one end and high-voltage electromagnetic selector valve 11 is connected, the outlet of high-voltage electromagnetic selector valve 11 connects described oil returning tube by relief valve 9, the other end of logical valve 6 connects described oil returning tube, described drainback passage connects described oil returning tube.
It should be noted that, above-mentioned logical valve 6 is connected between pressure substation secondary pressure main pipeline and system oil return pipeline T, and its pilot control cavity area is greater than active chamber area, during depressurization phase, pilot control oil ends in low-voltage solenoid valve, logical valve control channel cannot be entered, logical valve is in open mode, secondary pressure main pipeline and system oil return pipeline communication; During low-pressure state, low-pressure pilot controls oil and enters logical valve control channel, and logical valve is in closed condition; During high pressure conditions, high pressure pilot control oil enters logical valve control channel, and logical valve is closed; High and low pressure solenoid valve power-off simultaneously during emergent release, logical valve pilot control oil high-speed communication oil return release, logical valve is opened, secondary pressure fast pressure relief.
Hydraulic substation controls the pressure of the pilot pressure oil in pilot pressure passage by the break-make of control low-voltage solenoid valve 14, high-pressure solenoid valve 11, pilot pressure acts on the left side of valve core of main valve 20, namely on slide block, secondary pressure acts on the right side of valve core of main valve 20, on the right side of i.e. intermediate mass, valve core of main valve 20 is motion under pilot pressure, main spool spring 23 and secondary pressure interact, by changing the connected relation between high-pressure channel, secondary pressure passage and drainback passage, change the working state of secondary pressure.Pilot pressure oil is from the shunting of pumping plant high pressure oil, and have low-pressure pilot pressure and high pressure pilot pressure two states, low-pressure pilot pressure is set by relief valve 9, and high pressure pilot pressure is equal with the pressure that pumping plant exports, and flows in described oil pocket through high-pressure channel.
The utility model carrys out pilot pressure oil by control low-voltage solenoid valve 14 and high-pressure solenoid valve 11 break-make and flows to, each oil pipe connection diagram when Fig. 1 is low-voltage solenoid valve 14 power-off, high-pressure solenoid valve 11 power-off, should be understood that, in following the present embodiment, the break-make situation of above-mentioned two solenoid valves can be inferred accordingly.
Under depressurization phase, low-voltage solenoid valve 14 and high-pressure solenoid valve 11 power-off, valve core of main valve 20 is close main valve front end plug 19 under the pretightening force of main spool spring 23, high pressure oil arrives main valve high-pressure channel through one-way valve A1, high pressure filter 2, main valve secondary pressure channel connection system oil return passage, main valve high-pressure channel and secondary pressure passage disconnect; Guide's hydraulic oil arrives the cut-off of low-voltage solenoid valve 14 front end via guide's filter 15, damping 18; Secondary pressure channel connection system oil return passage, secondary pressure is in depressurization phase.
In a low voltage state, low-voltage solenoid valve 14 obtains electric, high-pressure solenoid valve 11 power-off, the low-pressure pilot pressure oil set up in advance by relief valve 9 enters the guide oil passage of main valve through low-voltage solenoid valve 14, valve core of main valve 20 moves to the right under the effect of low-pressure pilot pressure oil, main valve high-pressure channel and secondary pressure channel connection, and secondary pressure passage and drainback passage disconnect, high pressure oil enters secondary pressure passage, and secondary pressure oil enters in the spring chamber of right side simultaneously; When secondary pressure oil reaches the pressure preset, valve core of main valve 20 is in equilibrium position under the effect of low-pressure pilot pressure, secondary pressure and main spool spring 23, and low-pressure pilot pressure oil closes logical valve 6 via damping 7.Main valve high-pressure channel, secondary pressure passage and drainback passage end mutually, and secondary pressure slowly switches to low-pressure state under the effect of guide's accumulator 12.
In a high voltage state, low-voltage solenoid valve 14 obtains electric, high-pressure solenoid valve 11 obtains electric, pilot pressure oil switches to high pressure conditions, valve core of main valve 20 moves to the right under the effect of high pressure pilot pressure oil, main valve high-pressure channel and secondary pressure channel connection, secondary pressure passage and drainback passage disconnect, high pressure oil enters secondary pressure passage, secondary pressure oil enters in the spring chamber of right side simultaneously, final valve core of main valve 20 is in equilibrium position under the effect of high pressure pilot pressure, secondary pressure and main spool spring 23, and high pressure pilot pressure oil closes logical valve 6 via damping 7.Main valve high-pressure channel and secondary pressure channel connection, secondary pressure passage and system oil return passage disconnect, and secondary pressure slowly switches to high pressure conditions by low-pressure state under the effect of guide's accumulator 12.
Cutoff high solenoid valve 11 power supply when high pressure conditions, high pressure guide oil pressure slowly switches to low-pressure pilot state, valve core of main valve 20 is moved to the left, main valve secondary pressure passage is communicated with drainback passage, secondary pressure oil is via logical valve 6 draining simultaneously, secondary pressure steadily switches to low-pressure state, again cutoff low solenoid valve 14, and secondary pressure steadily switches to depressurization phase.
Cutoff low solenoid valve 14 and high-pressure solenoid valve 11 power supply while of when high pressure conditions, high pressure pilot pressure oil realizes fast pressure relief through the oil return of low-voltage solenoid valve 14 connected system, valve core of main valve is fast moving left, secondary pressure channel connection system oil return passage fast pressure relief, secondary pressure passage is communicated with fast pressure relief by logical valve 6 with system oil return simultaneously, and secondary pressure switches to depressurization phase fast.
As shown in Figure 1, multiple damping is provided with at each pipeline place in this enforcement, except the damping D18 be provided with before flowing to low voltage electromagnetic selector valve (14), the damping C13 be provided with before being also included in pilot pressure passage, the damping B10 between relief valve 9 and high-voltage electromagnetic selector valve 11 and the damping A7 be located at before logical valve 6.On the other hand, the present embodiment is also provided with in high pressure accumulator 5 and oil returning tube in secondary pressure channel outlet and is provided with oil-return accumulator 16, is provided with one-way valve 17 after this oil-return accumulator 16.
Be understandable that, the utility model is provided with multiple filter, has oily filter function, can provide clean oil sources for hydraulic system, as shown in Figure 1, is provided with guide's filter 15 and damping D18 between described high pressure pipe line and low voltage electromagnetic selector valve 14; Carry out oil filter and flow to regulating by one-way valve A1 and high pressure filter 2 at the high pressure oil being input to high-pressure channel by pump station pressure P, accordingly, in oil returning tube, be provided with one-way valve C, between oil returning tube and relief valve 9, be provided with one-way valve B8 etc. all there is pressure oil flow to regulating action.
The utility model hydraulic substation is also provided with pressure gauge on pipeline, is convenient to management, as shown in Figure 1, is provided with pressure gauge A3 between described high pressure pipe line and described high-pressure channel; At described secondary pressure passage and described secondary pressure pipeline to being provided with pressure gauge B4.
It should be noted that; the utility model hydraulic substation comprises any one and combination in any thereof in above-described embodiment; but embodiment recited above is described preferred implementation of the present utility model; not the utility model scope is limited; do not departing under the utility model designs spiritual prerequisite; the various distortion that the common engineers and technicians in related domain make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (5)
1. a hydraulic substation, is characterized in that: comprise main valve, hydraulic tubing and control the control circui mechanism that in described hydraulic tubing, hydraulic oil flows to, wherein,
Described main valve comprises main valve front end plug (19), valve core of main valve (20), valve body of main valve (21), main valve rear end cover (22) and main spool spring (23), by valve body of main valve (21), main valve front end plug (19) and main valve rear end cover (22) form an oil pocket, and have pilot pressure passage in upper autonomous valve front end plug (19) of valve body of main valve (21) successively to main valve rear end cover (22), high-pressure channel, secondary pressure passage and drainback passage, main valve rear end cover (22) connects valve core of main valve (20) by main spool spring (23), valve core of main valve (20) is positioned at described oil pocket,
Valve core of main valve (20) is arranged to make described oil pocket be divided into the column structure of five separate chamber, comprise the chamber being communicated with described pilot pressure passage, be communicated with the chamber of described high-pressure channel, be communicated with the chamber of described secondary pressure passage, be communicated with the chamber of described drainback passage and the chamber at main spool spring (23) place, the chamber at described main spool spring (23) place is communicated with by pipeline (24) with the described chamber being communicated with secondary pressure passage, simultaneously, when valve core of main valve (20) is mobile under main spool spring (23) effect, the chamber of described connection high-pressure channel interconnects with the described chamber being communicated with secondary pressure passage, the chamber of described connection secondary pressure passage interconnects with the described chamber being communicated with drainback passage,
Described hydraulic tubing comprises high pressure pipe line, secondary pressure pipeline and oil returning tube, described high pressure pipe line connects described high-pressure channel, also connect the entrance of low voltage electromagnetic selector valve (14) simultaneously, another entrance of low voltage electromagnetic selector valve (14) connects described oil returning tube, the outlet of low voltage electromagnetic selector valve (14) by pipeline successively with described pilot pressure passage, adjustable pollution discharge pipe device (12), the entrance of logical valve (6) one end and high-voltage electromagnetic selector valve (11) is connected, the outlet of high-voltage electromagnetic selector valve (11) connects described oil returning tube by relief valve (9), the other end of logical valve (6) connects described oil returning tube, described drainback passage connects described oil returning tube.
2. hydraulic substation according to claim 1, it is characterized in that: valve core of main valve (20) is provided with a slide block in the one end near main valve front end plug (19), when described slide block slides in described oil pocket, the chamber of described connection pilot pressure passage does not have connectedness with the described chamber being communicated with high-pressure channel.
3. hydraulic substation according to claim 2, it is characterized in that: valve core of main valve (20) comprises an intermediate mass, described intermediate mass and described slide block taper connection, when valve core of main valve (20) slides in oil pocket, the chamber of described connection secondary pressure passage has connectedness with the described chamber being communicated with high-pressure channel.
4. hydraulic substation according to claim 1, is characterized in that: be provided with guide's filter (15) and damping D (18) between described high pressure pipe line and low voltage electromagnetic selector valve (14).
5. hydraulic substation according to claim 1, is characterized in that: between described high pressure pipe line and described high-pressure channel, be provided with pressure gauge A (3); At described secondary pressure passage and described secondary pressure pipeline to being provided with pressure gauge B (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520312399.7U CN204610394U (en) | 2015-05-14 | 2015-05-14 | A kind of hydraulic substation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520312399.7U CN204610394U (en) | 2015-05-14 | 2015-05-14 | A kind of hydraulic substation |
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| CN204610394U true CN204610394U (en) | 2015-09-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179349A (en) * | 2015-09-23 | 2015-12-23 | 中国煤炭科工集团太原研究院有限公司 | Automatic pressure switching selector valve |
| CN105971975A (en) * | 2016-05-18 | 2016-09-28 | 浙江大学 | Valve core liquid power test system and test method for large flow load control valve |
| CN108006263A (en) * | 2017-12-01 | 2018-05-08 | 宁波文泽机电技术开发有限公司 | Open type guide type electromagnetic ball valve |
| CN111810461A (en) * | 2020-07-24 | 2020-10-23 | 中国人民解放军陆军装甲兵学院 | Hydraulic two-stage oil source for supplying energy by using two-stage energy accumulator |
-
2015
- 2015-05-14 CN CN201520312399.7U patent/CN204610394U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179349A (en) * | 2015-09-23 | 2015-12-23 | 中国煤炭科工集团太原研究院有限公司 | Automatic pressure switching selector valve |
| CN105971975A (en) * | 2016-05-18 | 2016-09-28 | 浙江大学 | Valve core liquid power test system and test method for large flow load control valve |
| CN108006263A (en) * | 2017-12-01 | 2018-05-08 | 宁波文泽机电技术开发有限公司 | Open type guide type electromagnetic ball valve |
| CN111810461A (en) * | 2020-07-24 | 2020-10-23 | 中国人民解放军陆军装甲兵学院 | Hydraulic two-stage oil source for supplying energy by using two-stage energy accumulator |
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