CN209324614U - A kind of hydrogenation stations that can control repairing opportunity autoclave diaphragm compressor oil-supplementing system and autoclave diaphragm compressor - Google Patents

A kind of hydrogenation stations that can control repairing opportunity autoclave diaphragm compressor oil-supplementing system and autoclave diaphragm compressor Download PDF

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Publication number
CN209324614U
CN209324614U CN201822246836.6U CN201822246836U CN209324614U CN 209324614 U CN209324614 U CN 209324614U CN 201822246836 U CN201822246836 U CN 201822246836U CN 209324614 U CN209324614 U CN 209324614U
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oil
repairing
plunger pump
pressure
circuit
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彭学院
汪婷
陈嘉豪
贾晓晗
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JIANGSU PERMANENT MACHINERY CO., LTD.
Xian Jiaotong University
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Xian Jiaotong University
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Abstract

The utility model belongs to diaphragm type compressor field, is related to a kind of hydrogenation stations autoclave diaphragm compressor oil-supplementing system and autoclave diaphragm compressor that can control repairing opportunity, oil-supplementing system includes repairing oil circuit and oil return circuit, two oil circuit parallel connections.Oil return circuit is connected between plunger pump and crankcase, and overflow valve is equipped in oil circuit;Between plunger pump and oil cylinder, check-valves is installed in repairing oil circuit repairing oil circuit connection, is acted on oil cylinder to the flow direction of plunger pump.The oil spilling pressure of spill valve is lower than the specified pump oil pressure of plunger pump, and it is adjustable at any time, when the oil pressure in plunger pump is higher than its oil spilling pressure, the plunger pump just repairing no longer into oil cylinder, extra oil returns in crankcase through overflow valve, and then achievees the purpose that the topping up of oil and repairing duration that control plunger pump, to prevent plunger pump from leading to the reduction of compressor air-discharging amount since repairing is too early or repairing overlong time, and the problem of influencing diaphragm service life and Intensity of Cylinder Head, increasing compressor wasted work.

Description

A kind of hydrogenation stations that can control repairing opportunity autoclave diaphragm compressor oil-supplementing system And autoclave diaphragm compressor
Technical field
The utility model belongs to diaphragm type compressor field, and in particular to the hydrogenation stations that one kind can control repairing opportunity are high Press diaphragm type compressor oil-supplementing system and autoclave diaphragm compressor.
Background technique
With global energy growing tension, the inexorable trend that green energy resource has become the world is developed.Hydrogen is because of its burning Water, and abundance are generated, is known as being this century most potential clean energy resource.Using hydrogen as the fuel cell of the energy Automobile has many advantages, such as environmental protection, efficient, no pollution, zero-emission.In hydrogen during using and store, if thinking constantly to develop Using hydrogen technology, just must the pressure of raising hydrogen in use as far as possible, autoclave diaphragm compressor is in hydrogenation stations For the key equipment of hydrogen pressurization, and the Intensity of Cylinder Head of diaphragm type compressor and diaphragm life problems, then it is autoclave diaphragm compression Unusual distinct issues in machine R&D process.
The hydraulic oil fluid infusion system of diaphragm type compressor is one of the key structure that guarantees diaphragm type compressor and can operate normally. When machine operation, the hydraulic oil in membrane compresses Oil cylinder is inevitably leaked by piston ring, and consequence is just etc. In reducing piston stroke, when such piston reaches outer dead point, diaphragm just cannot fit with cylinder cap upper supporting plate.Each turn of machine Leakage will be generated, so that with the increase of runing time, the hydraulic oil in hydraulic cylinder will be fewer and fewer, and the clearance in membrane cavity is held Product volume also can be increasing, and eventually resulting in compressor cannot inspiration gas and ability of losing the job again.So in membrane compresses In machine, a fluid infusion plunger pump must be set up, fluid infusion plunger is generally by the actuated by cams being arranged on crankshaft end, in crankcase Piston runs to form certain phase difference, and a certain amount of liquid is supplemented in every hydraulic steering cylinder.
In fluid infusion system, the topping up of oil of plunger pump and repairing time are two aspects for needing to consider emphatically.Generally The fluid infusion opportunity of diaphragm type compressor mainly includes at two: first is that is, piston stops in the case where reaching before compressor air suction stroke terminates Repairing before point;Second is that piston leaves a certain position repairing of lower dead center when compression travel starts.When the operating pressure of plunger pump When higher, for the former, when in-oil cylinder hydraulic fluid pressure is also higher, plunger pump just starts the repairing into oil cylinder, this is with regard to phase When in reducing the downward stroke of piston, it is most likely that cause diaphragm that can not fully deform downwards, so that the suction of compressor Gas process is affected, and then influences the capacity of compressor;For the latter, then repairing overlong time is shown as, i.e., from the beginning of When repairing plays in-oil cylinder hydraulic fluid pressure and is increased to higher level under the promotion of piston, plunger pump is just stopped replenishing.No Pipe is that the repairing time is too early or repairing overlong time also means that topping up of oil also can be excessive for plunger pump, this It is equivalent to stroke when increasing piston stroking upward, so that diaphragm has just first been attached to the upper supporting plate of cylinder cap when piston is less than outer dead point, If oil cylinder cannot be discharged in time in excessive hydraulic oil by the overflow valve of diaphragm type compressor at this time, the pressure of in-oil cylinder hydraulic oil will Can increase rapidly under the effect of piston so that diaphragm generates bigger additional stress, influence diaphragm type compressor Intensity of Cylinder Head and The service life of diaphragm.Therefore a kind of oil-supplementing system that can improve autoclave diaphragm compressor oil replenishing process how is designed, so that In the case where guaranteeing that diaphragm type compressor original structure is constant, plunger pump repairing opportunity and topping up of oil can be accurately held, it is ensured that diaphragm Compressor can stable operation, be designer pursue target.
Utility model content
The hydrogenation stations autoclave diaphragm compressor that repairing opportunity can be controlled the purpose of the utility model is to provide one kind is mended Oil system and autoclave diaphragm compressor, the utility model are enabled in the case where guaranteeing that diaphragm type compressor original structure is constant, Accurately hold plunger pump repairing opportunity and topping up of oil, it is ensured that diaphragm type compressor being capable of stable operation.
To achieve the above object, the technical solution adopted in the utility model are as follows:
A kind of hydrogenation stations that can control repairing opportunity autoclave diaphragm compressor oil-supplementing system, including repairing oil circuit and return The oil cylinder of oil circuit and autoclave diaphragm compressor, crankcase and plunger pump, oil return circuit be connected to plunger pump and crankcase it Between, overflow valve is installed in oil return circuit;Repairing oil circuit connection is equipped with non-return in repairing oil circuit between plunger pump and oil cylinder Valve, check-valves act on oil cylinder to flow direction oily between plunger pump;
Wherein, when the setting oil pressure relief of overflow valve is lower than no oil return circuit plunger pump can into oil cylinder pump oil highest Oil pressure, simultaneously above the pressure of inspiration(Pi) of autoclave diaphragm compressor.
Overflow valve upper end is equipped with the adjusting pedestal of regulation relief valve oil spilling pressure.
The distribution in parallel with oil return circuit of repairing oil circuit.
A kind of autoclave diaphragm compressor, including autoclave diaphragm compressor body further include repairing oil circuit and oil return circuit, return Oily oil circuit connection is equipped with overflow valve between plunger pump and crankcase in oil return circuit;Repairing oil circuit connection in plunger pump with Between oil cylinder, check-valves is installed in repairing oil circuit, check-valves acts on oil cylinder to flow direction oily between plunger pump;
Wherein, when the setting oil pressure relief of overflow valve is lower than no oil return circuit plunger pump can into oil cylinder pump oil highest Oil pressure, simultaneously above the pressure of inspiration(Pi) of autoclave diaphragm compressor.
Overflow valve upper end is equipped with the adjusting pedestal of regulation relief valve oil spilling pressure.
The distribution in parallel with oil return circuit of repairing oil circuit.
Compared with prior art, the utility model has the following beneficial effects:
The autoclave diaphragm compressor oil-supplementing system of the utility model by plunger pump in existing autoclave diaphragm compressor with Oil return circuit is connected between crankcase, and repairing oil circuit is connected between plunger pump and oil cylinder;Check-valves is installed in repairing oil circuit, Overflow valve is installed in oil return circuit, check-valves is installed in repairing oil circuit, act on oil cylinder to plunger pump direction flowing side Upwards, i.e., hydraulic oil can only flow to oil cylinder from plunger pump, and the overflow valve in plunger pump and oil return circuit cannot be flowed to from oil cylinder; When wherein the setting oil pressure relief of overflow valve is lower than no oil return circuit plunger pump can into oil cylinder pump oil highest oil pressure, simultaneously Higher than the pressure of inspiration(Pi) of autoclave diaphragm compressor;The oil-supplementing system of the utility model is not only suitable for plunger pump in compressor air suction row Before journey terminates, i.e. piston is also applied for plunger pump and starts in compression travel, piston leaves the case where reaching repairing before bottom dead center The case where a certain position repairing of lower dead center, specific: when plunger pump is before compressor air suction stroke terminates, i.e., piston is reaching To when repairing before bottom dead center, the pressure of hydraulic oil is also being gradually decreased with moving downward for piston in oil cylinder, at this moment in plunger Hydraulic fluid pressure in pump then starts to increase under the action of plunger, and since in-oil cylinder pressure is also higher at this time, plunger pump is not Can the repairing into oil cylinder, oil pressure continues to increase in plunger pump, until reaching the oil spilling pressure of overflow valve setting, overflow valve is beaten at this time It opens, the hydraulic oil in plunger pump returns in crankcase through oil return circuit, and the hydraulic fluid pressure of plunger pump is maintained at setting for overflow valve In constant-pressure level;After in-oil cylinder pressure reduction to the oil spilling pressure for being lower than overflow valve setting, repairing oil communication, plunger Hydraulic oil in pump enters in oil cylinder through repairing oil circuit, at this moment since the hydraulic fluid pressure in oil circuit is lower than the setting pressure of overflow valve Power, overflow valve are closed, and oil return circuit is closed.When plunger pump is started in compression travel, piston leaves a certain position of lower dead center When repairing, the pressure of hydraulic oil is gradually increased with moving upwards for piston in oil cylinder at this time, due to the liquid in oil cylinder at this time The integral pressure of pressure oil is lower, and lower than the oil spilling pressure that overflow valve in oil-supplementing system is set, the hydraulic oil compressed through plunger pump is straight It connected repairing oil circuit to enter in oil cylinder, in the process, the pump oil pressure of plunger pump is also gradually increased;When the liquid in oil cylinder After oil pressure is increased above the setting pressure of overflow valve, the hydraulic fluid pressure compressed through plunger pump is also increased to overflow valve and overflows Flowing pressure, the overflow valve in oil-supplementing system is opened at this time, and the hydraulic oil in plunger pump returns in crankcase through oil return circuit, is mended Oil return line no longer works.In summary: for traditional autoclave diaphragm compressor oil-supplementing system, when plunger pump operating pressure compared with Gao Shi, plunger pump starts repairing too early and the repairing duration is longer, this is just likely to result in repairing and excessively diaphragm is existed It cannot sufficiently be deformed downwards during down stroke, reduce the capacity of compressor, while also result in piston in top dead centre Hydraulic fluid pressure is excessively high, influences the intensity of cylinder cap and the service life of diaphragm, rings the normal operation of compressor.And the utility model will pass The oil-supplementing system of system substitutes, and to have the oil-supplementing system of repairing oil circuit and two structures of oil return circuit, solves conventional membrane pressure The problem that contracting machine plunger pump repairing opportunity is too early, repairing overlong time and topping up of oil are excessive, it is simple in construction, easy to disassemble and assemble.
By the beneficial effect of the utility model autoclave diaphragm compressor oil-supplementing system it is found that the high pressure with the oil-supplementing system Diaphragm type compressor can accurately hold plunger pump repairing opportunity and topping up of oil, it is ensured that diaphragm type compressor can stable operation, and It is simple in construction, easy to disassemble and assemble.
Detailed description of the invention
Fig. 1 is the example of the utility model septation compressor Each part and position view.
Fig. 2 is that the example of the utility model septation compressor plunger pump is the i.e. piston before compressor air suction stroke terminates When reaching repairing before bottom dead center (situation one), in-oil cylinder oil pressure and plunger pump oil pressure change over time schematic diagram.
Fig. 3 is in the example of the utility model, and plunger pump is started in compression travel, and piston leaves a certain position of lower dead center When repairing (situation two), in-oil cylinder oil pressure and plunger pump oil pressure change over time schematic diagram.
Wherein, 1. oil cylinder, 2. crankcases, 3. plunger pumps, 4. repairing oil circuits, 5. oil return circuits, 6. check-valves, 7. overflows Valve, 8. overflow valve regulation pedestals.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, embodiment is only used for explaining this reality With novel, but not as the restriction to the utility model.
Referring to Fig.1, the hydrogenation stations that repairing opportunity can be controlled of the utility model autoclave diaphragm compressor oil-supplementing system Oil cylinder 1, crankcase 2 and plunger pump 3 including repairing oil circuit 4 and oil return circuit 5 and autoclave diaphragm compressor, oil return circuit 5 It is connected between plunger pump 3 and crankcase 2, overflow valve 7 is installed in oil return circuit 5;Repairing oil circuit 4 be connected to plunger pump 3 with Between oil cylinder 1, check-valves 6 is installed in repairing oil circuit 4, check-valves 6 acts on oil cylinder 1 to flowing side oily between plunger pump 3 Upwards, i.e., hydraulic oil can only flow to oil cylinder 1 from plunger pump 3, and overflowing in plunger pump 3 and oil return circuit 5 cannot be flowed to from oil cylinder 1 Flow valve 7;The distribution in parallel with oil return circuit 5 of repairing oil circuit 4;7 upper end of overflow valve is equipped with the adjusting base of 7 oil spilling pressure of regulation relief valve Seat 8 can change the pre compressed magnitude of overflow valve spring by rotation adjusting screw at any time by adjusting pedestal 8 to regulation relief valve 7 oil spilling pressure;
Wherein, plunger pump 3 can be pumped into oil cylinder 1 when the setting oil pressure relief p of overflow valve 7 must be lower than no oil return circuit 5 The highest oil pressure a of oil, simultaneously above the pressure of inspiration(Pi) of compressor.In this way when the oil pressure in oil cylinder 1 is greater than p, plunger pump 3 is pumped out Section hydraulic oil can only be returned in crankcase 2 through overflow valve 7 and oil return circuit 5, and cannot the repairing into oil cylinder 1, when oil cylinder 1 When interior hydraulic fluid pressure is less than p, plunger pump 3 could the repairing into oil cylinder 1, to reach control repairing time and topping up of oil Purpose.
As shown in Figure 1, the autoclave diaphragm compressor of the utility model uses above-mentioned oil-supplementing system.
The principle that the autoclave diaphragm compressor of the utility model carries out repairing is illustrated by following two situation:
Situation one is when plunger pump 3 is before compressor air suction stroke terminates, i.e. piston is when reaching repairing before bottom dead center, feelings The repairing principle of condition one is as follows:
When plunger pump 3 is before compressor air suction stroke terminates, i.e. piston is when reaching repairing before bottom dead center, liquid in oil cylinder 1 The pressure of pressure oil is also being gradually decreased with moving downward for piston, and at this moment the hydraulic fluid pressure in plunger pump 3 is then in plunger Under the action of start to increase, since in oil cylinder at this time 1 pressure is also higher, plunger pump 3 cannot the repairing into oil cylinder 1, plunger pump 3 Interior oil pressure continues to increase, until reaching the oil spilling pressure of the setting of overflow valve 7, overflow valve 7 is opened at this time, hydraulic in plunger pump 3 Oil returns in crankcase 2 through oil return circuit 5, and the hydraulic fluid pressure of plunger pump 3 is maintained on the setting stress level of overflow valve 7. After the pressure reduction in oil cylinder 1 to the oil spilling pressure for being lower than the setting of overflow valve 7, repairing oil circuit 4 is connected to, the liquid in plunger pump 3 Pressure oil enters in oil cylinder 1 through repairing oil circuit 4, at this moment since the hydraulic fluid pressure in oil circuit is lower than the setting pressure of overflow valve 3, overflows It flows valve 3 to close, oil return circuit 5 is closed.
In Fig. 2, curve 9 is that oil pressure changes over time curve in one oil cylinder of situation, and curve 10 is situation one without oil return circuit When plunger pump oil pressure change over time curve, plunger pump oil when being b that curve 11 is one oil return circuit overflow valve oil spilling pressure of situation Pressure changes over time curve, and curve 12 is one oil return circuit overflow valve oil spilling pressure of situation when being c, and plunger pump oil pressure becomes at any time Change curve;As shown in Fig. 2, when in oil-supplementing system without oil return circuit, plunger pump 3 being capable of the repairing into oil cylinder 1 for situation one Pressure be a, the hydraulic oil in plunger pump 3 fully enters in oil cylinder 1 at this time;When the oil pressure relief of overflow valve 7 in oil return circuit 5 When being set as b, then hydraulic oil a part in plunger pump 3 first passes through overflow valve 7 and returns in crankcase 2, the oil in oil cylinder 1 When pressure decreases below b point, raffinate pressure oil just enters in oil cylinder 1 through repairing oil circuit 4 in plunger pump 3, and wherein b is less than no oil return When oil circuit 5 plunger pump 3 can into oil cylinder 1 pump oil highest oil pressure a.When the oil pressure relief of overflow valve 7 is set as more lower than b When c, then when 1 pressure reduction of oil cylinder to c point, plunger pump 3 just starts the repairing into oil cylinder 1, this has just reached the control repairing time, Reduce the purpose of topping up of oil.
Situation two is the situation two when plunger pump 3 starts in compression travel, and piston leaves a certain position repairing of lower dead center Repairing principle it is as follows:
When plunger pump 3 starts in compression travel, and piston leaves a certain position repairing of lower dead center, hydraulic oil in oil cylinder 1 Pressure be gradually increased with moving upwards for piston, since the integral pressure of the hydraulic oil in oil cylinder 1 at this time is lower, be lower than The oil spilling pressure that overflow valve 7 is set in oil-supplementing system, the hydraulic oil compressed through plunger pump directly pass through repairing oil circuit 4 into oil cylinder In 1, in the process, the pump oil pressure of plunger pump 3 also with hydraulic fluid pressure in oil cylinder 1 raising and gradually rise;Work as oil After hydraulic fluid pressure in cylinder 1 is increased above the setting pressure of overflow valve 7, the hydraulic fluid pressure compressed through plunger pump 1 is also risen Up to overflow valve oil pressure relief, the overflow valve 7 in oil return circuit 5 is opened at this time, and the hydraulic oil in plunger pump 3 is through oil return circuit 5 return in crankcase 2, and feed circuit 4 no longer works.
In Fig. 3, curve 9 ' is that oil pressure changes over time curve in two oil cylinder of situation, and curve 10 ' is situation two without oil return oil Plunger pump oil pressure changes over time curve when road, and curve 11 ' is that two oil return circuit overflow valve oil spilling pressure of situation is b ' Shi Zhusai Pump oil pressure changes over time curve, curve 12 ' is two oil return circuit overflow valve oil spilling pressure of situation when being c ' plunger pump oil pressure with Time changing curve.As shown in figure 3, when in oil-supplementing system without oil return circuit 5, plunger pump 3 is out of oil cylinder 1 for situation two Start repairing when oil pressure is lower, until oil pressure is increased to stop replenishing when a ' point, the hydraulic oil in plunger pump 3 is whole at this time Into in oil cylinder 1.When there is the oil pressure relief of oil return circuit 5 and overflow valve 7 to be set to be lower than b ', then plunger pump 3 is to oil cylinder 1 Until when pressure rise is to b ', overflow valve 7 is opened for interior repairing, and remaining hydraulic oil then returns to song through oil return circuit 5 in plunger pump 3 In axle box 2, wherein when b ' is less than no oil return circuit 5 plunger pump 3 can into oil cylinder 1 pump oil highest oil pressure a ';Work as overflow valve When 3 oil pressure relief is set as c ' more lower than b ', then oil pressure just stops when being increased to c ' point into oil cylinder 1 in plunger pump 3 Repairing, this has just equally reached the control repairing time, has reduced the purpose of topping up of oil.

Claims (6)

1. the hydrogenation stations autoclave diaphragm compressor oil-supplementing system that one kind can control repairing opportunity, which is characterized in that including mending The oil cylinder (1) of oil circuit (4) and oil return circuit (5) and autoclave diaphragm compressor, crankcase (2) and plunger pump (3), oil return oil Road (5) is connected between plunger pump (3) and crankcase (2), and overflow valve (7) are equipped in oil return circuit (5);Repairing oil circuit (4) It is connected between plunger pump (3) and oil cylinder (1), is equipped in repairing oil circuit (4) check-valves (6), check-valves (6) acts on oil cylinder (1) it arrives on flow direction oily between plunger pump (3);
Wherein, plunger pump (3) can be pumped into oil cylinder (1) when the setting oil pressure relief of overflow valve (7) is lower than no oil return circuit (5) The highest oil pressure of oil, simultaneously above the pressure of inspiration(Pi) of autoclave diaphragm compressor.
2. the hydrogenation stations autoclave diaphragm compressor repairing system that one kind according to claim 1 can control repairing opportunity System, which is characterized in that overflow valve (7) upper end is equipped with the adjusting pedestal (8) of regulation relief valve (7) oil spilling pressure.
3. the hydrogenation stations autoclave diaphragm compressor repairing system that one kind according to claim 1 can control repairing opportunity System, which is characterized in that repairing oil circuit (4) distribution in parallel with oil return circuit (5).
4. a kind of autoclave diaphragm compressor, which is characterized in that further include repairing oil circuit (4) including autoclave diaphragm compressor body With oil return circuit (5), oil return circuit (5) is connected between the plunger pump (3) of autoclave diaphragm compressor body and crankcase (2), Overflow valve (7) are installed in oil return circuit (5);Repairing oil circuit (4) be connected to the plunger pump (3) of autoclave diaphragm compressor body with Between oil cylinder (1), be equipped in repairing oil circuit (4) check-valves (6), check-valves (6) act on oil cylinder (1) to plunger pump (3) it Between on oily flow direction;
Wherein, plunger pump (3) can be pumped into oil cylinder (1) when the setting oil pressure relief of overflow valve (7) is lower than no oil return circuit (5) The highest oil pressure of oil, simultaneously above the pressure of inspiration(Pi) of autoclave diaphragm compressor.
5. a kind of autoclave diaphragm compressor according to claim 4, which is characterized in that overflow valve (7) upper end, which is equipped with, to be adjusted The adjusting pedestal (8) of overflow valve (7) oil spilling pressure.
6. a kind of autoclave diaphragm compressor according to claim 4, which is characterized in that repairing oil circuit (4) and oil return circuit (5) distribution in parallel.
CN201822246836.6U 2018-12-28 2018-12-28 A kind of hydrogenation stations that can control repairing opportunity autoclave diaphragm compressor oil-supplementing system and autoclave diaphragm compressor Active CN209324614U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109469603A (en) * 2018-12-28 2019-03-15 西安交通大学 A kind of hydrogenation stations that can control repairing opportunity autoclave diaphragm compressor oil-supplementing system and autoclave diaphragm compressor and oil supplement method
CN111810389A (en) * 2020-07-14 2020-10-23 西安交通大学 Diaphragm compressor oil pressure accompanies controlling means and control system thereof
CN112431747A (en) * 2020-11-23 2021-03-02 西安交通大学 Full-automatic diaphragm compressor oil way system and starting method thereof
CN113153712A (en) * 2021-04-27 2021-07-23 烟台东德氢能技术有限公司 Diaphragm compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109469603A (en) * 2018-12-28 2019-03-15 西安交通大学 A kind of hydrogenation stations that can control repairing opportunity autoclave diaphragm compressor oil-supplementing system and autoclave diaphragm compressor and oil supplement method
CN109469603B (en) * 2018-12-28 2020-10-27 西安交通大学 High-pressure diaphragm compressor and oil supplementing system and method thereof
CN111810389A (en) * 2020-07-14 2020-10-23 西安交通大学 Diaphragm compressor oil pressure accompanies controlling means and control system thereof
CN112431747A (en) * 2020-11-23 2021-03-02 西安交通大学 Full-automatic diaphragm compressor oil way system and starting method thereof
CN113153712A (en) * 2021-04-27 2021-07-23 烟台东德氢能技术有限公司 Diaphragm compressor

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