阅读说明：本技术 一种光学舱泄压装置 (A kind of optics cabin pressure relief device ) 是由 尹新启 雒仲祥 罗佳 颜宏 廖原 陈黎 杜应磊 李建民 余鸿铭 吴娟 张永红 于 2019-08-27 设计创作，主要内容包括：本发明公开了一种光学舱泄压装置,包括气腔座、排气罩、密封件和气嘴接头；所述气腔座顶部设置排气密封口；所述密封件放置于排气密封口上,与排气密封口接触,在接触面形成密封；所述排气罩具有排气通道,与气腔座连接,设置于排气密封口上；所述气腔座与气嘴接头连接,排气密封口通过气嘴接头与光学舱连通。采用本发明的一种光学舱泄压装置,实现激光系统光学舱内气体置换时的排气,以及气体置换后的光学舱的保压密封,保压值可设计；具有低耐压能力,能够适用于低压环境；采用纯机械式结构泄压,无需电控,结构简单稳定可靠。(The invention discloses a kind of optics cabin pressure relief devices, including air cavity seat, hood, sealing element and air nozzle connector；Exhaust sealing mouth is set at the top of the air cavity seat；The sealing element is placed on exhaust sealing mouth, is contacted with exhaust sealing mouth, is formed and is sealed in contact surface；The hood has exhaust passage, connect, is set on exhaust sealing mouth with air cavity seat；The air cavity seat is connect with air nozzle connector, and exhaust sealing mouth is connected to by air nozzle connector with optics cabin.Using a kind of optics cabin pressure relief device of the invention, the pressure maintaining sealing in the optics cabin after exhaust and gas displacement when realizing gas displacement in laser system optical cabin, pressure maintaining value can be designed；With low voltage endurance capability, environment under low pressure can be suitable for；Using purely mechanical structure pressure release, without automatically controlled, simple and stable structure is reliable.)

1. a kind of optics cabin pressure relief device, it is characterised in that: connect including air cavity seat (1), hood (2), sealing element (3) and gas nozzle Head (4)；Exhaust sealing mouth (5) are set at the top of the air cavity seat (1)；The sealing element (3) is placed on exhaust sealing mouth (5), It is contacted with exhaust sealing mouth (5), is formed and sealed in contact surface；The hood (2) has exhaust passage (6), with air cavity seat (1) Connection, is set on exhaust sealing mouth (5)；The air cavity seat (1) connect with air nozzle connector (4), and exhaust sealing mouth (5) passes through gas Mouth connector (4) is connected to optics cabin.

2. optics cabin as described in claim 1 pressure relief device, it is characterised in that: the sealing element (3) is pressure-bearing floating ball, exhaust Seal (5) is taper, and sealing element (3) and exhaust sealing mouth (5) are in contact surface formation linear sealing.

3. optics cabin as described in claim 1 pressure relief device, it is characterised in that: the exhaust sealing mouth (5) and sealing element (3) Two groups or more is set.

4. optics cabin as claimed in claim 3 pressure relief device, it is characterised in that: the exhaust sealing mouth (5) passes through air cavity seat (1) internal cavity connection, cavity are connected to by air nozzle connector (4) with optics cabin.

5. optics cabin as described in claim 1 pressure relief device, it is characterised in that: the hood (2) is cylindrical shape, hood (2) top sealing, lower open.

6. optics cabin as described in claim 1 pressure relief device, it is characterised in that: the exhaust sealing mouth (5) of the air cavity seat (1) Place's setting external thread column, air cavity seat (1) are connected through a screw thread with hood (2).

7. optics cabin as described in claim 1 pressure relief device, it is characterised in that: the exhaust passage (6) is gas vent, setting In on hood (2) peripheral wall.

8. optics cabin as described in claim 1 pressure relief device, it is characterised in that: further include dust cover (7), dust cover (7) cover On hood (2), dust cover (7) is connected through a screw thread with hood (2).

9. optics cabin as claimed in claim 8 pressure relief device, it is characterised in that: dust cover (7) inner wall and hood (2) Gap is set between outer wall, gap is set between dust cover (7) bottom edge and air cavity seat (1).

10. optics cabin as described in claim 1 pressure relief device, it is characterised in that: by selection different materials or size it is close Sealing (3) carrys out design weight, matches the different exhaust of optics cabin and dwell pressure requirement.

Technical field

The present invention relates to a kind of optics cabin pressure relief devices, and especially one is arrange when gas displacement in laser system optical cabin The pressure relief device of port, belongs to laser technology field.

Background technique

Important component when pressure relief device is the gas displacement of laser system optical cabin.For laser system, if humidity Excessively high, the optical element in optics cabin may condense, if cleanliness is poor, the optical element surface in optics cabin be might have Dust pollution.Moisture condensation and dust pollution will cause the damage of optical element surface film layer, be destructive influences to laser system, So needing to control the humidity and cleanliness in optics cabin.Generally by gas in the clean dry gas displacement cabin of regular injection The method of body controls humidity, in order to guarantee that the cleanliness of gas in cabin, exhaust outlet cannot be normally opened, prevents atmospheric reflux, needs One pressure relief device is set, and pressure relief device has certain pressure maintaining ability, washes pressure release open when pressure is more than some value, is lower than certain Pressure maintaining sealing dust-separation is fallen when a value.

In addition, opposite voltage endurance capability is lower since the thin volume of laser system optical bulkhead is big, generally receiving 1KPa-3KPa, For the relief valve of such low voltage endurance capability, similar products are arrived without investigation in the market.

Summary of the invention

Goal of the invention of the invention is: in view of the above problems, providing a kind of optics cabin pressure relief device, the present invention For the pressure relief device of Purely mechanical, simple and stable structure is reliable.

The technical solution adopted by the invention is as follows:

A kind of optics cabin pressure relief device, including air cavity seat, hood, sealing element and air nozzle connector；At the top of the air cavity seat Exhaust sealing mouth is set；The sealing element is placed on exhaust sealing mouth, is contacted with exhaust sealing mouth, is formed in contact surface close Envelope；The hood has exhaust passage, connect, is set on exhaust sealing mouth with air cavity seat；The air cavity seat connects with gas nozzle Head connection, exhaust sealing mouth are connected to by air nozzle connector with optics cabin.

Preferably, the sealing element is pressure-bearing floating ball；Spherical sealing element can be with exhaust sealing mouth of various shapes It is used cooperatively.

Preferably, exhaust sealing mouth is taper, sealing element and exhaust sealing mouth in contact surface formation linear sealing.

In the above scheme, seal more preferable between the exhaust sealing mouth and pressure-bearing floating ball of taper, and pressure-bearing floating ball can be with It is easier to fall into sealing station.

Preferably, sealing element and exhaust sealing mouth pass through polishing treatment.

In the above scheme, surface of polished is more smooth, so that the two be made to contact closer, better tightness.

Preferably, two groups or more is arranged in the exhaust sealing mouth and sealing element.

In the above scheme, the exhaust sealing mouth and sealing element of multiple groups are set, are vented simultaneously by multiple groups, exhaust is faster Speed, while when wherein one group of failure, others still are able to complete exhaust pressure relief work.

Preferably, the exhaust sealing mouth, by the cavity connection inside air cavity seat, the cavity passes through air nozzle connector It is connected to optics cabin.

Preferably, activity spacing is arranged between sealing element in the hood.

Preferably, the hood is cylindrical shape, sealing at the top of hood, lower open.

Exist in above scheme, the interior activity spacing between sealing element of hood is ensured when needing pressure release, sealing element can It is jacked up, allows gas to enough discharges；Top sealing simultaneously, it is ensured that sealing element will not be ejected hood, and sealing element is made to exist Work in working range

Preferably, external thread column is arranged at the exhaust sealing mouth of the air cavity seat, air cavity seat and hood pass through screw thread Connection.

Preferably, the exhaust passage is gas vent, it is set on hood peripheral wall.

Preferably, further including dust cover, dust cover is covered on hood, and dust cover is connected through a screw thread with hood.

Preferably, external thread column is arranged at the top of the hood, hood is connected through a screw thread with dust cover.

Preferably, be arranged gap between the dust cover inner wall and exhaust cover outer wall, dust cover bottom edge and air cavity seat it Between gap is set.

In the above scheme, dust cover is to avoid the storage for a long time of optics cabin pressure relief device and dust stratification, gas pass through row The gas vent of gas hood peripheral wall, the gap coming dust cover inner wall and being vented between cover outer wall, from dust cover bottom edge and air cavity seat it Between gap discharge；So on the one hand setting is smoothly discharged convenient for internal gas, on the other hand also blocks top and side Dust enters air cavity seat.

Preferably, gap is in 2mm or more, dust cover bottom edge and air cavity between the dust cover inner wall and exhaust cover outer wall Gap is in 3-5mm between seat.

Preferably, the air nozzle connector is connected through a screw thread with air cavity seat.

Preferably, matching different optics cabin rows by selection different materials or the sealing element of size come design weight Gas and dwell pressure requirement.

In the above scheme, the weight of sealing element is designed by selecting material and the size of different sealing elements, and protected The size of card sealing element is consistently greater than the diameter of exhaust sealing mouth, so that the exhaust different from optics cabin and dwell pressure require phase Matching.

A kind of optics cabin pressure relief device of the invention, air nozzle connector is directly connected to optics cabin exhaust hose, when optics cabin When interior gas displacement, lasting in optics cabin to be filled with dry gas, gas comes air cavity seat by air nozzle connector, when in air cavity seat When gas is greater than its gravity to the upward thrust of sealing element, sealing element will be pushed up, so that gas passes through exhaust in cabin Cover is moved out, thus pressure reduction, when pressure reduction to the gravity for being not enough to supporting sealing member, sealing element will fall, It is contacted with exhaust sealing mouth, forms sealing at contact surface, to suppress gas in optics cabin again, air pressure rises, equally, when When gas is greater than its gravity to the upward thrust of sealing element in air cavity seat, sealing element will be pushed up again, repeatedly, real The displacement of gas in existing optics cabin, stopping is filled with dry gas, optics cabin internal pressure after humidity reaches target call value in cabin Power will not continue to increase again, and finally, when gas is equal to its gravity to the upward thrust of sealing element in air cavity seat, sealing element stops Bounce, and stand on exhaust sealing mouth, realize the pressure maintaining sealing function in optics cabin.

In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: realizing laser system optical cabin The pressure maintaining in the optics cabin after exhaust and gas displacement when interior gas displacement seals, and pressure maintaining value can design；With low resistance to pressure energy Power can be suitable for environment under low pressure；Using purely mechanical structure pressure release, without automatically controlled, simple and stable structure is reliable.

Detailed description of the invention

Examples of the present invention will be described by way of reference to the accompanying drawings, in which:

Fig. 1 is the decomposition texture schematic diagram of pressure relief device；

Fig. 2 is the single hermetically sealed structural schematic diagram of pressure relief device；

Fig. 3 is the single hermetically sealed top view of pressure relief device；

Fig. 4 is the double hermetically sealed structural schematic diagram of pressure relief device；

Fig. 5 is the double hermetically sealed top view of pressure relief device.

Marked in the figure: 1- air cavity seat, 2- hood, 3- sealing element, 4- air nozzle connector, 5- exhaust sealing mouth, 6- exhaust are logical Road, 7- dust cover.

Specific embodiment

All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.

Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics .