CN204738877U

CN204738877U - Air reducer

Info

Publication number: CN204738877U
Application number: CN201520412713.9U
Authority: CN
Inventors: N·韦托索
Original assignee: Metatron SpA
Current assignee: Metatron SpA
Priority date: 2014-12-19
Filing date: 2015-06-16
Publication date: 2015-11-04
Anticipated expiration: 2025-06-16
Also published as: KR20160002253U; ITBO20140129U1

Abstract

The utility model discloses an air reducer, it includes: main part (2), at least one high pressure entry (3) and at least one the low pressure export (4) of formation in main part (2), an at least one mechanical platform (5) for inciting somebody to action pressure reduces to the middle pressure, forms in main part (2) and lie in the low reaches of entry (3) in the operation from the high pressure, a middling pressure pipeline (7) interconnection for inciting somebody to action pressure reduces to low pressure, partial at least formation and establish ties, lie in the low reaches of mechanical platform and at least one electronics platform (6) that link to each other with export (4) fluid in the operation with mechanical platform (5) in main part (2) from the middle pressure, and wherein, mechanical platform (5) and electronics platform (6) are passed through to form totally in main part (2) . the utility model aims at providing a has high performance level and reliable pressure reducer of while. Through the utility model discloses an air reducer has realized above -mentioned mesh.

Description

Air reducer

Technical field

The utility model relates to a kind of air reducer, especially for being automatically applied in the supply system of supply internal-combustion engine.

Background technique

In fact, the utility model relates to a kind of decompressor, described decompressor can be applied in the gas supply system of internal-combustion engine, such as, described gas is such as methane or liquefied petroleum gas (LPG) (LPG), in recent years due to the advantage shared by economic aspect and decrease pollution, thus the market share of methane or liquefied petroleum gas (LPG) is growing.

These gas supply systems generally include: pressurized gas cylinder; Gas tank is connected to many pipes of internal-combustion engine; And decompressor, the gas pressure in gas tank is reduced to and is suitable for supplying a gas to internal-combustion engine and therefore, it is possible to the pressure matched with combustion parameter by described decompressor.

According to the degree of filling gas tank, the gas pressure in gas tank is usually between 250bar and 10bar.On the other hand, must according to the pressure of the operating conditions of motor (that is, motor load) adjustment for supplying gas to motor.

For this reason, have developed a kind of electronics decompressor, wherein, pure mechanical decompressor by can better for sparger base measuring pressure solenoid valve to substitute or pure mechanical decompressor and described solenoid valve are partly combined into one.

According to the prior art researched and developed by the applicant, decompressor comprises mechanical reduction valve, electronic control valve and control unit in single box-like body.

More specifically, mechanical reduction valve and electronic control valve are positioned to partly parallel each other, thus make the back pressure determined by electronic control valve in mechanical reduction valve.

Therefore, in the known decompressor of the applicant, in the inherent single platform of the mechanical decompressor controlled by electronic valve " indirectly ", pressure jump occurs, described electronic valve makes back pressure change according to measured motor situation.

Disadvantageously, although this solution has very good performance and very high stability with regard to management and control high pressure and high flow rate (heavy-duty applications), with high costs for the enforcement of simultaneously bearing the light-duty applications of low-pressure and low flow velocity for needing pinpoint accuracy.

Given this, have developed other solution disclosed in patent documentation DE 202008009954 in recent years, wherein, decompressor comprises two relieving platforms of tandem arrangement in single housing, i.e. mechanical relieving platform and electronics relieving platform.

Machinery relieving platform is used for implementing more significant pressure drop, and electronics relieving platform implements meticulous adjustment, and the described meticulous operating conditions and metering needle that allow according to motor of regulating is to the pressure of sparger.

More specifically, the decompressor discussed is equipped with both mechanical relieving platform and electronics relieving platform, these two platforms are contained in valve body and " leading to " shares in bearing or chamber, once block described shared bearing or chamber by thread plate, then described shared bearing or chamber define the medium pressure passage of gas.

It should be noted that mechanical relieving platform has and compensate structure that is, have by the fluid passage of baffle plate, the structure that makes dynamic sealing be subject to the pressure (that is, high pressure) in tank to act on.

Disadvantageously, this makes decompressor not be highly stable, because both dynamic sealing and static seal bear high pressure or medium pressure and bear larger stress when wearing and tearing or breaking down and more crucial for system at some positions.

Model utility content

The purpose of this utility model is to provide a kind of decompressor, and described decompressor can overcome above-mentioned defect of the prior art.

More specifically, the purpose of this utility model is to provide one and has high performance level and simultaneously reliably decompressor.

By achieving these objects according to electronics decompressor of the present utility model, described electronics decompressor comprises especially: main body; Be formed at least one high pressure entry in main body and at least one low tension outlet; At least one mechanical platform, at least one mechanical platform described is used for pressure be formed in main body from high pressure drop to medium pressure and be positioned at the downstream part of described high pressure entry in operation; With at least one e-platform, at least one e-platform described is used for pressure being down to low pressure from medium pressure and being formed at least in part main body and connecting with mechanical platform and be positioned at the downstream part of mechanical platform in operation and be connected with described low tension outlet fluid.

According to the utility model, mechanical platform and e-platform are by being formed entirely in the medium pressure conduit interconnection in main body.

According to the utility model, main body is made for single piece, and described medium pressure conduit is through main body.

According to the utility model, air reducer comprises the excess pressure valve be connected with described medium pressure conduit fluid.

According to the utility model, medium pressure conduit has at least one auxiliary branch, and at least one auxiliary branch described to be also formed in main body and to be connected to excess pressure valve.

According to the utility model, air reducer comprises pressure transducer, and described pressure transducer is rigidly connected to main body and is connected with at least one high pressure entry fluid described.

According to the utility model, high pressure entry defines and is formed in main body and is provided with the high-voltage tube of at least one Y-piece, and at least one Y-piece described defines the first elongator being connected at least one mechanical platform described and the second elongator being connected to pressure transducer.

According to the utility model, mechanical platform is limited by sheath, and slider can slide in described sheath, and described slider defines neck, and described neck is designed to produce pressure drop; Described sheath and main body are made for one.

According to the utility model, the slider of mechanical platform has at least one dynamic sealing being positioned at described neck nearside; Mechanical platform has non-compensation structure, thus makes at least one dynamic sealing described towards described medium pressure conduit and bear the described medium pressure being less than described high pressure.

According to the utility model, the shape of main body is be equipped with at least two sides respect to one another box-like; Each in high pressure entry and at least one low tension outlet described is all towards the outside of respective side.

According to the utility model, air reducer comprises at least one hydraulic pressure heating circuit, and at least one hydraulic pressure heating circuit described to be formed in main body and to lead to from least one outstanding first coupling of main body and at least one second coupling.

According to the utility model, e-platform comprises the baffle plate by electromagnetic valve, and wherein, described solenoid valve can be connected to main body with removing.

According to the utility model, solenoid valve reaches the outside of described main body, to allow easily to keep in repair.

Accompanying drawing explanation

With reference to accompanying drawing according to the preferably following detailed description of non-limiting example of the present utility model, these and other feature of the present utility model will become more obviously, in the accompanying drawings:

Fig. 1 is the perspective view according to decompressor of the present utility model;

Fig. 2 is the plan view of the decompressor of Fig. 1;

Fig. 3,4 and 5 is three sectional views intercepted according to line III-III, IV-IV and the V-V in Fig. 2.

Embodiment

With reference to accompanying drawing, reference character 1 refers to according to decompressor of the present utility model

More specifically, as hereinafter described in more detail, decompressor 1 is " electronics " decompressor, namely, can at least in part by the decompressor of control unit and electronic operation, described control unit can be arranged on decompressor from it or the preferred and supply system be provided with on the vehicle of decompressor be connected.

Decompressor 1 be in use arranged on along the supply pipeline between pressure pan and manifold or the gas rail that is connected along the sparger with motor especially internal-combustion engine in the supply system of gas coming through.

Decompressor 1 is configured to the gas pressure (changing between 250bar and 10bar greatly) reducing tank inside, thus gas pressure is matched with the supply pressure (being less than 10bar) of sparger.

Therefore decompressor 1 is equipped with the main body 2 be preferably made of metal.

In a preferred embodiment, main body 2 is manufactured by casting or die casting.

But, alternatively, main body 2 can be manufactured by removing materials.

Main body 2 is preferably made for one, that is, be made for single piece (inseparable after main body is made).

Main body 2 is equipped with multiple chamber or siphunculus, and each in described multiple chamber or siphunculus all extends leading between two ends outside main body 2.

Preferably, main body 2 is box-like substantially and has roof 2c, diapire 2b and multiple sidewall 2a.

Main body preferably has at least four sidewalls, but alternatively, main body can have more or less sidewall (being as required, a sidewall when rounding/curved surface extends).

In order to allow the gas from tank (not shown) to pass through, main body 2 is at least equipped with high pressure entry 3 and low tension outlet 4.

More specifically, main body 2 is equipped with the pipe extending through main body 2 between high pressure entry 3 and low tension outlet 4.

High pressure entry 3 is in use connected to high pressure gas holder.

Then, low tension outlet 4 is in use connected to manifold or rail injectors.

Preferably, the respective side 2a of high pressure entry 3 and each agent-oriention all outwardly 2 of low tension outlet 4.

More specifically, high pressure entry 3 and low tension outlet 4 are projected into outside two sidewall 2a respect to one another.

In detail, high pressure entry 3 and low tension outlet 4 are parallel to each other.

Preferably, it should be noted that high pressure entry 3 and filter 3a are connected.In an illustrated embodiment, filter is compressed metal net type.Alternatively, association filter filter core can be inserted.

In order to regulate in a precise manner, decompressor 1 comprises two adjustment platforms of tandem arrangement.

More specifically, decompressor 1 comprises at least one mechanical platform 5, and at least one mechanical platform described is used for pressure being low to moderate medium pressure from high pressure drop and being formed in main body 2 and being positioned at the downstream part (being connected with high pressure entry fluid) of high pressure entry 3 in operation.

It should be noted that phrase " mechanical platform " refers to pure mechanical reduction valve, wherein, resist hydrodynamic pressure by the mechanical pressure applied by spring.

Therefore, preferably, mechanical platform 5 is configured for the Pressure Drop from tank to be low to moderate and presets or predetermined range.

And decompressor 1 also comprises at least one e-platform 6, at least one e-platform described is used for pressure to be reduced to low pressure from medium pressure and to be formed at least in part main body 2 and with low tension outlet 4 fluid to be connected.

E-platform 6 is connected with mechanical platform 5 and is positioned at the downstream part of described mechanical platform in operation.

It should be noted that phrase " e-platform " refers to the decompressor comprising the solenoid valve 6a directly or indirectly acted on fluid (gas).

According to an aspect of the present utility model, mechanical platform 5 and e-platform 6 are interconnected by the medium pressure conduit 7 be formed entirely in main body 2.

Medium pressure conduit 7 defines the intermediate portion extended between high pressure entry 3 and low tension outlet 4 of pipe.

Advantageously, by this way, very accurately pressure adjustment is carried out and simultaneously safety and reliably management and control fluid.

In more detail, main body 2 has and is formed in main body and connects at least one first bearing 9a and the second bearing 9b by medium pressure conduit 7.

Mechanical platform 5 is connected in the first bearing 9a.

E-platform 6 is connected in the second bearing 9b.

Preferably, medium pressure conduit 7 extends at a right angle relative to high pressure entry 3 and low tension outlet 4 between two bearing 9a, 9b.

In an illustrated embodiment, can enter the first bearing 9a, both the second bearing 9b from the top 2c of main body 2.

More specifically, the second bearing 9b runs through by extending between described top and bottom, to allow to connect the solenoid valve 6a of e-platform 6 and each mechanical part between the top 2c of main body 2 and bottom 2b.

Especially, solenoid valve 6 can be connected from top 2c, and each mechanical part can insert (and being clamped by thread plate) by bottom 2b.

Preferably, with reference to Fig. 4, each mechanical part of e-platform 6 is limited by moveable piston and antagonism spring, and this gas allows to pass through when the power that gas acts on sealing area is greater than the elastic force of spring.

Preferably, in order to increase reliability of the present utility model, decompressor 1 comprises the excess pressure valve 8 being positioned to be connected with medium pressure conduit 7 fluid.

More specifically, medium pressure conduit 7 has at least one auxiliary branch 7a being connected to excess pressure valve 8.

It should be noted that excess pressure valve 8 to be preferably connected in main body 2 and to be projected into outside main body.

More specifically, auxiliary branch 7a extends from high pressure entry 3 away from low tension outlet 4 (transverse to described low tension outlet).

More specifically, auxiliary branch 7a forms depressed part, and excess pressure valve 8 is connected in described depressed part.

Excess pressure valve 8 is projected into outside main body 2 transverse to high pressure entry 3 and low tension outlet 4 ground.

In an illustrated embodiment, mechanical platform 5 is limited by sheath 5a, and slider 5b can slide in described sheath, and described slider defines the neck being designed to produce predetermined pressure drop.

Sheath 5a is preferably made for one with main body 2.

Sheath 5a defines the first bearing 9a for holding mechanical platform 5.

Should also be noted that the dynamic sealing 10 that the slider 5a of mechanical platform 5 has at least one and is positioned at neck nearside.

More specifically, slider 5b has two dynamic sealings, and dynamic sealing 10 is positioned at neck nearside and another is away from neck.

According to an aspect of the present utility model, be positioned at the dynamic sealing 10 of neck nearside towards medium pressure conduit 7.

In other words, mechanical platform 5 has non-compensation structure.

Advantageously, by this way, nearside dynamic sealing 10 bears medium pressure and the high pressure do not born in high pressure entry 3.

This clearly converts higher durability and the reliability of decompressor 1 to.

Should also be noted that the dynamic sealing away from neck does not bear high pressure but bears medium pressure.

In a preferred embodiment, e-platform 6 comprises the baffle plate 11 controlled by solenoid valve 6a.

The baffle plate 11 with the end being connected to solenoid valve 6a is inserted in the second bearing 9b slidably.

More specifically, solenoid valve 6a is connected to main body 2 removedly.

In an illustrated embodiment, solenoid valve 6a is projected into outside main body 2, to allow to keep in repair easily.In an illustrated embodiment, solenoid valve 6a gives prominence to from the top 2c of main body 2.

Preferably, valve body 2 also with can be connected to control unit for transmit the control data of solenoid valve 6a and its operate needed for the connector 15 of both electric power or data acquisition unit be connected.

In an illustrated embodiment, connector 15 is also given prominence to from the top 2c of main body 2.

Preferably, decompressor 1 comprises and is rigidly connected to main body 2 and the pressure transducer 12 be communicated with high pressure entry 3 fluid.

High pressure entry 3 defines high-voltage tube, described high-voltage tube to be formed in main body 2 and to be provided with at least one Y-piece, and at least one Y-piece described defines the first elongator 13a being connected to mechanical platform 5 and the second elongator 13b being connected to pressure transducer 12.

Advantageously, by this way, contribute to measuring the pressure entering into decompressor 1.

Alternatively, pressure transducer in series can also be installed with mechanical platform.

In other words, in this embodiment, pressure transducer is plugged between the initial part of high pressure entry and mechanical platform.

And preferably, in order to prevent each parts from enduring cold, decompressor 1 comprises: at least one hydraulic pressure heating circuit 14, described hydraulic pressure heating circuit to be formed in main body 2 and to lead to from main body 2 at least the first outstanding coupling 14a and the second coupling 14b.

Preferably, hydraulic pressure heating circuit 14 is in use connected with the cooling circuit of motor.

The utility model achieves predeterminated target and has considerable advantage.

In fact, two pressure platforms be connected by the pipeline be formed in main body are used to make it possible to keep the high reliability of decompressor.

And the non-existence compensating structure further increases the reliability of each parts, and reason is to there is not the dynamic sealing bearing high pressure.

Claims

1. an air reducer, described air reducer comprises:

-main body (2);

-be formed at least one high pressure entry (3) in main body (2) and at least one low tension outlet (4);

-at least one mechanical platform (5), at least one mechanical platform described is used for pressure being low to moderate medium pressure from high pressure drop and being formed in main body (2) and being positioned at the downstream part of described at least one high pressure entry (3) in operation;

-at least one e-platform (6), at least one e-platform described is used for pressure being reduced to low pressure from medium pressure and being formed in main body (2) and with described at least one mechanical platform (5) downstream part of at least one mechanical platform described of connecting, be positioned in operation at least in part and being connected with described at least one low tension outlet (4) fluid;

It is characterized in that, described at least one mechanical platform (5) and at least one e-platform described (6) are by being formed entirely in medium pressure conduit (7) interconnection in main body (2).

2. air reducer according to claim 1, is characterized in that, described main body (2) is made for single piece, and described medium pressure conduit (7) is through main body (2).

3. air reducer according to claim 1, is characterized in that, described air reducer comprises the excess pressure valve (8) be connected with described medium pressure conduit (7) fluid.

4. air reducer according to claim 3, it is characterized in that, described medium pressure conduit (7) has at least one auxiliary branch (7a), and at least one auxiliary branch described to be also formed in main body (2) and to be connected to excess pressure valve (8).

5. air reducer according to claim 1, it is characterized in that, described air reducer comprises pressure transducer (12), and described pressure transducer is rigidly connected to main body (2) and is connected with described at least one high pressure entry (3) fluid.

6. air reducer according to claim 5, it is characterized in that, described at least one high pressure entry (3) defines and is formed in main body (2) and is provided with the high-voltage tube of at least one Y-piece, and at least one Y-piece described defines the first elongator (13a) being connected to described at least one mechanical platform (5) and the second elongator (13b) being connected to pressure transducer (12).

7. air reducer according to claim 1, it is characterized in that, described at least one mechanical platform (5) is limited by sheath (5a), slider (5b) can slide in described sheath, described slider defines neck, and described neck is designed to produce pressure drop; Described sheath (5a) and main body (2) are made for one.

8. air reducer according to claim 7, is characterized in that, the slider (5b) of described at least one mechanical platform (5) has at least one dynamic sealing (10) being positioned at described neck nearside; Described at least one mechanical platform (5) has non-compensation structure, thus makes described at least one dynamic sealing (10) towards described medium pressure conduit (7) and bear the described medium pressure being less than described high pressure.

9. air reducer according to claim 1, is characterized in that, the shape of described main body (2) is be equipped with at least two sides respect to one another (2a) box-like; Each in described at least one high pressure entry (3) and at least one low tension outlet described (4) is all towards the outside of respective side (2a).

10. air reducer according to claim 1, it is characterized in that, described air reducer comprises at least one hydraulic pressure heating circuit (14), and at least one hydraulic pressure heating circuit described to be formed in main body (2) and to lead to from least one outstanding first coupling (14b) of main body (2) and at least one the second coupling (14b).

11. air reducers according to claim 1, it is characterized in that, described at least one e-platform (6) comprises the baffle plate (11) controlled by solenoid valve (6a), wherein, described solenoid valve (6a) can be connected to main body (2) with removing.

12. air reducers according to claim 11, is characterized in that, described solenoid valve (6a) reaches the outside of described main body (2), to allow easily to keep in repair.