阅读说明：本技术 一种实现真空管道快速柔性隔断的多层油幕隔断装置 (Multilayer oil curtain partition device for realizing rapid flexible partition of vacuum pipeline ) 是由 张俊 于 2019-10-29 设计创作，主要内容包括：本发明涉及一种实现真空管道快速柔性隔断的多层油幕隔断装置,所述隔断装置的一侧为真空管道的封存真空段、另一侧为真空管道的拆卸段；所述隔断装置上设有对接法兰,并通过对接法兰与封存真空段以及拆卸段连接；所述隔断装置的管道上方布置有高压喷嘴和油泵,管道下方对应设有拉法尔喷管和油箱；另所述高压喷嘴与油泵之间设有入口压力调节阀,所述拉法尔喷管和油箱之间设有出口压力调节阀；所述油泵将工质通过高压喷嘴喷出后在管道内形成射流油幕,并进入管道下方对应的拉法尔喷管中；本发明通过采用高压喷嘴产生高速射流油幕实现真空管道隔断,该装置具有响应迅速、占空间小、隔断动作为柔性部件,对不规则管径适应性好。(The invention relates to a multilayer oil curtain partition device for realizing quick and flexible partition of a vacuum pipeline, wherein one side of the partition device is a sealed vacuum section of the vacuum pipeline, and the other side of the partition device is a disassembly section of the vacuum pipeline; the partition device is provided with a butt flange and is connected with the sealed vacuum section and the disassembly section through the butt flange; a high-pressure nozzle and an oil pump are arranged above the pipeline of the partition device, and a Laval spray pipe and an oil tank are correspondingly arranged below the pipeline; an inlet pressure regulating valve is arranged between the high-pressure nozzle and the oil pump, and an outlet pressure regulating valve is arranged between the Laval nozzle and the oil tank; the oil pump sprays the working medium through the high-pressure nozzle to form a jet flow oil curtain in the pipeline and enters the corresponding Laval nozzle below the pipeline; the invention realizes the vacuum pipeline partition by adopting the high-pressure nozzle to generate the high-speed jet flow oil curtain, and the device has the advantages of quick response, small occupied space, partition motion as a flexible part and good adaptability to irregular pipe diameters.)

1. The utility model provides a realize multilayer oil curtain wall device (1) of quick flexible wall of vacuum tube, its characterized in that: one side of the partition device is a sealed vacuum section (2) of the vacuum pipeline, and the other side of the partition device is a disassembly section (3) of the vacuum pipeline; the partition device (1) is provided with a butt flange (11) and is connected with the sealed vacuum section (2) and the disassembly section (3) through the butt flange (11); a high-pressure nozzle (4) and an oil pump (5) are arranged above a pipeline of the partition device (1), and a Laval nozzle (6) and an oil tank (7) are correspondingly arranged below the pipeline; an inlet pressure regulating valve (8) is arranged between the high-pressure nozzle (4) and the oil pump (5), and an outlet pressure regulating valve (9) is arranged between the Laval nozzle and the oil tank; and the oil pump (5) sprays the working medium through the high-pressure nozzle (4) to form a jet flow oil curtain in the pipeline of the partition device (1) and enters the Laval nozzle (6) corresponding to the lower part of the pipeline.

2. The multilayer oil curtain partition device for realizing the quick flexible partition of the vacuum pipeline as claimed in claim 1, wherein: the high-pressure nozzles (4) are three groups of porous nozzles.

3. The multilayer oil curtain partition device for realizing the quick flexible partition of the vacuum pipeline as claimed in claim 2, wherein: the number of the spray holes in each group is respectively 1, 2 and 3.

4. The multilayer oil curtain partition device for realizing the quick flexible partition of the vacuum pipeline as claimed in claim 3, wherein: the 3-hole nozzle is arranged on one side close to the disassembling section (3).

5. The multilayer oil curtain partition device for realizing the quick and flexible partition of the vacuum pipeline according to any one of claims 1 to 4, characterized in that: the working medium in the high-pressure nozzle (4) is silicone oil.

6. The multilayer oil curtain partition device for realizing the quick and flexible partition of the vacuum pipeline according to any one of claims 1 to 4, characterized in that: an inlet pressure gauge (12) is arranged between the oil pump (5) and the inlet pressure regulating valve (8), and an outlet pressure gauge (13) is arranged between the oil tank (7) and the outlet pressure regulating valve (9); the outlet pressure P of the Laval nozzle (6) is adjusted by adjusting the valve opening of the outlet pressure adjusting valve (9)_cInlet pressure P to the high-pressure nozzle (4)_oIs less than the critical pressure ratio.

Technical Field

The invention belongs to the field of vacuum pipeline partition, and particularly relates to the field of flexible partition of a vacuum pipeline rapid multilayer oil curtain.

Background

The vacuum in the pipeline is established by the need of continuously operating a vacuum pump set, and the replacement and maintenance of parts in a vacuum pipeline need to break the balance of the whole vacuum system, so that the quick flexible partition of the vacuum pipeline is very necessary.

Disclosure of Invention

In order to solve the problems, the invention achieves the purposes through the following technical scheme:

a multilayer oil curtain partition device for realizing rapid flexible partition of a vacuum pipeline is characterized in that one side of the partition device is a sealed vacuum section of the vacuum pipeline, and the other side of the partition device is a disassembly section of the vacuum pipeline; the partition device is provided with a butt flange and is connected with the sealed vacuum section and the disassembly section through the butt flange; a high-pressure nozzle and an oil pump are arranged above the pipeline of the partition device, and a Laval spray pipe and an oil tank are correspondingly arranged below the pipeline; an inlet pressure regulating valve is arranged between the high-pressure nozzle and the oil pump, and an outlet pressure regulating valve is arranged between the Laval nozzle and the oil tank; and the oil pump sprays the working medium through the high-pressure nozzle to form a jet oil curtain in the pipeline and enters the corresponding Laval nozzle below the pipeline.

As a further optimization scheme of the invention, the high-pressure nozzles are three groups of porous nozzles; the three groups of nozzles are adopted to generate two buffer cavities, so that the purpose of multi-stage throttling is realized, the overlarge differential pressure on two sides of single-stranded jet flow is avoided, and the problem of insufficient strength of a single-layer oil curtain is solved.

As a further optimization scheme of the invention, the number of the spray holes in each group is respectively 1, 2 and 3; the multi-hole nozzles with gradually changed quantity are sequentially arranged along the direction of the pipeline, the rigidity of mixed jet flow is improved through the mutual injection, adsorption and interference effects of the multi-hole jet flow, and the influence of the external environment and interference on the stability of the oil curtain is weakened.

As a further optimized scheme of the invention, the 3-hole nozzle is arranged at one side close to the disassembly section; in the three groups of nozzles, the rightmost nozzle is in direct contact with the atmospheric environment, the action of bearing environmental interference and pressure difference is strongest, and the stability of the mixed jet oil curtain is improved through the mutual injection, adsorption and interference of a plurality of jets generated by the three-hole nozzles.

As a further optimization scheme of the invention, the working medium in the nozzle is silicone oil; the silicone oil has the characteristics of high viscosity, good stability, difficult volatilization and the like.

As a further optimized proposal of the invention, an inlet pressure gauge is arranged between the oil pump and the inlet pressure regulating valve,an outlet pressure gauge is arranged between the oil tank and the outlet pressure regulating valve; the outlet pressure P of the Laval nozzle is adjusted by adjusting the opening of the outlet valve_cAnd high pressure nozzle inlet pressure P_oIs less than the critical pressure ratio; therefore, the pressure ratio is controlled to cause choking flow in the Laval nozzle, so that air and impurities in the external environment can be prevented from entering the vacuum environment in the pipeline.

The invention has the beneficial effects that:

1) the device has the advantages that the high-pressure nozzle is adopted to generate the high-speed jet flow oil curtain to realize the partition of the vacuum pipeline, the response is rapid, the occupied space is small, the partition motion is taken as a flexible part, and the adaptability to irregular pipe diameters is good;

2) through analogy the working process of penetrating oil air ejector, combine the high pressure nozzle of pipeline top and the Laval spray tube of pipeline below, not only solved toward the collection problem of vacuum pipe injection working medium, can also penetrate through high-speed fluidic drawing and entrainment effect, take out impurity and air in the vacuum system.

Drawings

FIG. 1 is a schematic diagram of the structural principle of the present invention;

in the figure: 1. a partition device; 11. butting flanges; 12. an inlet pressure gauge; 13. an outlet pressure gauge; 2. sealing the vacuum section; 3. disassembling the section; 4. a high pressure nozzle; 5. an oil pump; 6. a Laval nozzle; 7. an oil tank; 8. an inlet pressure regulating valve; 9. an outlet pressure regulating valve.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

As shown in fig. 1, a multilayer oil curtain partition device for realizing rapid flexible partition of a vacuum pipeline is provided, wherein one side of the partition device is a sealed vacuum section 2 of the vacuum pipeline, and the other side of the partition device is a disassembly section 3 of the vacuum pipeline; the partition device 1 is provided with a butt flange 11 and is connected with the sealed vacuum section 2 and the disassembly section 3 through the butt flange 11;

a high-pressure nozzle 4 is arranged above a pipeline of the partition device 1, and the high-pressure nozzle 4 is sequentially communicated with an inlet pressure gauge 12, an inlet pressure regulating valve 8 and an oil pump 5;

a Laval nozzle 6 is correspondingly arranged below the pipeline of the partition device 1, and the Laval nozzle 6 is sequentially communicated with an outlet pressure gauge 13, an outlet pressure regulating valve 9 and an oil tank 7;

the oil pump 5 sprays the working medium through the high-pressure nozzle 4 to form a jet flow oil curtain in the pipeline of the partition device 1 and enters the corresponding Laval nozzle 6 below the pipeline; the working medium in the high-pressure nozzle 4 is silicone oil which has the characteristics of high viscosity, good stability, difficult volatilization and the like;

the high-pressure nozzles 4 are three groups of porous nozzles, the number of each group of spray holes is 1, 2 and 3 respectively, silicone oil is sprayed out from the high-pressure nozzles 4 above the pipeline of the partition device 1 to form a jet oil curtain in the pipeline, two buffer cavities are formed between the sealed vacuum end 2 and the disassembly section 3, high-speed jet flow has an ejecting and entrainment effect on a vacuum environment and trace gas in the pipeline, and the high-speed jet flow enters the three Laval spray pipes 6 corresponding to the lower part of the pipeline to form a working process of the porous oil-jet air extractor; the oil curtain formed by three groups of nozzles and the double-layer buffer cavity can prevent ambient atmosphere from entering a vacuum system; and three groups of high-pressure nozzles 4 generate two buffer cavities, so that the aim of multi-stage throttling is fulfilled, the overlarge pressure difference at two sides of single-stranded jet flow is avoided, and the problem of insufficient strength of a single-layer oil curtain is solved;

for avoiding individual layer oil curtain both sides to bear pressure differential too big, make each section pressure differential evenly distributed through multilayer oil curtain and two cushion chambers of production, among three high-pressure nozzle 4 of group, locate one side that is close to dismantlement section 3 with 3 hole nozzles, rightmost side promptly, with atmospheric environment direct contact, bear the environmental disturbance and the pressure differential effect is strongest, draw mutually penetrating, adsorb and the interference effect of the stranded efflux that produces through three hole high-pressure nozzle 4, improve the stability of mixing efflux oil curtain.

The working process and principle of the device are as follows:

when the vacuum pipeline works normally, the oil pump 5 and the inlet pressure valve 8 are closed, the outlet pressure valve 9 is opened, and when the silicone oil is emptied, the vacuum pipeline system is closed and runs normally;

when the vacuum pipeline and the components need to be disassembled and replaced, the oil pump 5 and the inlet pressure valve 8 are opened, the outlet pressure valve 9 is opened at the same time, and the opening degree of the outlet pressure valve 9 is adjusted, so that the outlet pressure P of the Laval nozzle 6 is enabled to be adjusted_cAnd high pressure nozzle inlet pressure P_oWhen the pressure ratio is less than the critical pressure ratio, the Laval nozzle 6 is choked to flow, and air and impurities in the external environment can be prevented from entering the vacuum environment in the pipeline.

The vacuum pipeline partition device adopts the structure to generate the high-speed jet flow oil curtain by the high-pressure nozzle to realize the partition of the vacuum pipeline, has the advantages of quick response, small occupied space, partition action as a flexible part and good adaptability to irregular pipe diameters; and combine the high pressure nozzle of pipeline top and the Laval spray tube of pipeline below, not only solved the collection problem of toward vacuum pipe jet working medium, can also draw out impurity and air in the vacuum system through the effect of drawing and entrainment of high-speed efflux.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.