CN204854885U - Radar level gauge's anticorrosive antenna and radar level gauge - Google Patents
Radar level gauge's anticorrosive antenna and radar level gauge Download PDFInfo
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- CN204854885U CN204854885U CN201520351092.8U CN201520351092U CN204854885U CN 204854885 U CN204854885 U CN 204854885U CN 201520351092 U CN201520351092 U CN 201520351092U CN 204854885 U CN204854885 U CN 204854885U
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- antenna
- anticorrosion
- electromagnetic horn
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- level gauge
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Abstract
The utility model discloses a radar level gauge's anticorrosive antenna and radar level gauge installs in the bottom of radar level gauge's sensor (8), and its concrete structure includes: horn antenna (1) and antenna protection casing (2), the bottom in sensor (8) is fixed to the little opening in top of horn antenna (1), cover horn antenna (1) in antenna protection casing (2) antenna protection casing (2) to the top of antenna protection casing (2) is fixed in the lower part of sensor (8), and the bottom surface of antenna protection casing (2) be one to inside sunken interior concave surface (21) of horn antenna (1). The utility model discloses not only can condense preventing dust, preventing, ability integration in an organic whole such as anticorrosion to make corrosive protection performance strengthen by a wide margin, can be applicable to the horn antenna 1 of any processing form moreover, thereby guaranteed that radar level gauge also can accurately normally measure reliably in abominable operational environment, prolonged radar level gauge's life.
Description
Technical field
The utility model relates to level gauging technical field, particularly relates to a kind of anticorrosion antenna and radar levelmeter of radar levelmeter.
Background technology
Radar levelmeter is a kind of non-contact material level measuring device, form primarily of parts such as antenna, sensor, measurement display circuits, its principle of work is: radar levelmeter goes out extremely narrow microwave pulse by antenna transmission, and this microwave pulse can be propagated in space, when running into measured medium surface, the part energy of this microwave pulse can be reflected back, and is received by the same antenna; The time interval of transponder pulse and received pulse is directly proportional to the distance of antenna to measured medium surface; By identifying that the time interval of transponder pulse and received pulse just can calculate the distance of antenna to measured medium surface, thus realize level gauging.From the principle of work of radar levelmeter, antenna is the electromagnetic vitals of transmitting and receiving, and can directly determine radar levelmeter normally work.
In survey engineering, radar levelmeter can be subject to the very large impact of working environment, such as: when measured medium be have volatilization congealing property medium (such as: the water vapor produced under high temperature), have Dust Characteristics medium (such as: pulverized limestone) or there is medium (such as: sulfuric acid, hydrochloric acid, NaOH etc.) of corrosive property time, if these media attachment, covering or corrosion antenna, so electromagnetic transmission path can be hindered or be destroyed, thus measurement result can be caused to occur error, even cannot normally measure.Therefore, radar levelmeter needs, and certain protective equipment is set and deal with these severe working environments.
In the prior art, the antenna that radar levelmeter generally adopts is electromagnetic horn, and on electromagnetic horn, be usually provided with the protective equipment as shown in Fig. 1 a, Fig. 1 b, Fig. 1 c and Fig. 1 d, weakens the negative effect of harsh environments to radar levelmeter.Concrete protective equipment is as follows:
(1) as shown in Figure 1a, the protective equipment of this radar levelmeter is the big uncork upper cover one deck teflon flat film 91 at electromagnetic horn 1, and adopts clamp ring 92 to be fixed on electromagnetic horn 1 by teflon flat film 91; This protective equipment is mainly applicable to the electromagnetic horn 1 be rolled into by steel plate bending, and adopts the radar levelmeter of this protective equipment to be mainly used in dust-proof occasion, to steam-preventing condensation and etch-proof poor effect, can only be used for the occasion of slight erosion.
(2) as shown in Figure 1 b, the protective equipment of this radar levelmeter is covered on from the bottom to top on electromagnetic horn 1 by the teflon protective cover 93 of bottom surface to lower convexity, and make the top of teflon protective cover 93 be fixed on the bottom of sensor 8; This protective equipment is mainly applicable to the electromagnetic horn 1 that aluminium is processed to form by drilling machine, and adopts the radar levelmeter of this protective equipment to be mainly used in the occasion of steam-preventing condensation or the acid and alkaline steam that is corrosive.When water recovery is behind teflon protective cover 93 surface, water droplet can be formed, and the bottom surface high spot converging to teflon protective cover 93 from dripping under, thus make water droplet be not easy to be attached on teflon protective cover 93, but the center of this protective equipment has made water droplet concentrate on electromagnetic horn 1, still can have a negative impact to electromagnetic transmission, and the bottom surface of teflon protective cover 93 raises up and adds the entire length of antenna, thus also just expand and measure blind area.
(3) as illustrated in figure 1 c, the protective equipment of this radar levelmeter sprays teflon 94 on electromagnetic horn 1; As shown in Figure 1 d, the protective equipment of this radar levelmeter pastes teflon 94 on electromagnetic horn 1; Adopt the radar levelmeter of these two kinds of protective equipments to be mainly used in anticorrosion occasion, both with teflon 94, electromagnetic horn 1 all wrapped up, thus by electromagnetic horn 1 and corrosive liquids or corrosive gas isolated, to reach etch-proof object; These two kinds of protective equipments can flexible Application in the electromagnetic horn 1 (such as: the electromagnetic horn 1 be rolled into by steel plate bending as shown in Fig. 1 c and Fig. 1 d) of any form processing, but be only applicable to the occasion that corrosivity is little, and pollute large, high to the technical requirement of processing staff; In addition, colliding with in the links such as assembling transport can damage the teflon 94 on electromagnetic horn 1 surface, easily produces breaking point, reduces antiseptic power.
Summary of the invention
For above-mentioned weak point of the prior art, the utility model provides a kind of anticorrosion antenna and radar levelmeter of radar levelmeter, the ability such as dust-proof, anti-condensation, anticorrosion can not only be integrated in one, and anti-corrosion capability is significantly strengthened, and the electromagnetic horn 1 of any form processing can be applicable to flexibly, thus ensure that radar levelmeter also can accurately and reliably normally be measured in harsh environments, extend the serviceable life of radar levelmeter.
The purpose of this utility model is achieved through the following technical solutions:
An anticorrosion antenna for radar levelmeter, is installed on the bottom of the sensor 8 of radar levelmeter, comprises: electromagnetic horn 1 and antenna shield 2; The little opening in top of electromagnetic horn 1 is fixed on the bottom of sensor 8; Electromagnetic horn 1 covers in antenna shield 2 by antenna shield 2, and the top of antenna shield 2 is fixed on the bottom of sensor 8, and the bottom surface of antenna shield 2 is the inner concaves 21 to electromagnetic horn 1 inner recess.
Preferably, described inner concave 21 is conical inner concave, and the apex angle ss of the shaft section of this conical inner concave is greater than 0 ° and is less than 180 °.
Preferably, also comprise: flange 3 and adaptor 4; The center of flange 3 is all connected with the lower thread of sensor 8 with the center of adaptor 4, and adaptor 4 is positioned at the below of flange 3;
The open top of antenna shield 2 is provided with internal thread 22, and is threaded with adaptor 4 by this internal thread 22, and the open-topped outer 23 of antenna shield 2 fits tightly with the flange face of flange 3.
Preferably, resistance to compression support member 5 is provided with between the inwall of electromagnetic horn 1 and antenna shield 2.
Preferably, the little opening in the top of electromagnetic horn 1 is fixed on the bottom of sensor 8 by bolt 11.
Preferably, antenna shield 2 adopts anti-rot plastic to make.
A kind of radar levelmeter, have employed the anticorrosion antenna described in technique scheme.
The technical scheme provided as can be seen from above-mentioned the utility model, the anticorrosion antenna of the radar levelmeter that the utility model embodiment provides by being covered in antenna shield 2 by electromagnetic horn 1, thus makes electromagnetic horn 1 and dust, water vapor, corrosive liquids and gas effectively isolate; And the bottom surface of antenna shield 2 adopts inner concave 21, not only can effectively prevent water droplet from assembling, avoid and the electromagnetic transmission of electromagnetic horn 1 is had an impact, and shorten the entire length of this anticorrosion antenna, effectively reduce and measure blind area.As can be seen here, the ability such as dust-proof, anti-condensation, anticorrosion can not only be integrated in one by the anticorrosion antenna of this radar levelmeter, and anti-corrosion capability is significantly strengthened, and the electromagnetic horn 1 of any form processing can be applicable to flexibly, thus ensure that radar levelmeter also can accurately and reliably normally be measured in harsh environments, extend the serviceable life of radar levelmeter.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, not paying under the capable prerequisite of creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 a is the antenna structure view one of existing radar levelmeter.
Fig. 1 b is the antenna structure view two of existing radar levelmeter.
Fig. 1 c is the antenna structure view three of existing radar levelmeter.
Fig. 1 d is the antenna structure view four of existing radar levelmeter.
The structural representation of the antenna shield 2 of the radar levelmeter that Fig. 2 provides for the utility model embodiment.
The structural representation one of the anticorrosion antenna of the radar levelmeter that Fig. 3 a provides for the utility model embodiment.
The structural representation two of the anticorrosion antenna of the radar levelmeter that Fig. 3 b provides for the utility model embodiment.
The structural representation three of the anticorrosion antenna of the radar levelmeter that Fig. 3 c provides for the utility model embodiment.
The structural representation four of the anticorrosion antenna of the radar levelmeter that Fig. 4 a provides for the utility model embodiment.
The structural representation five of the anticorrosion antenna of the radar levelmeter that Fig. 4 b provides for the utility model embodiment.
The structural representation six of the anticorrosion antenna of the radar levelmeter that Fig. 4 c provides for the utility model embodiment.
The assembled in situ structural representation of the anticorrosion antenna of the radar levelmeter that Fig. 5 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
Below the anticorrosion antenna of radar levelmeter provided by the utility model and radar levelmeter are described in detail.
Embodiment one
As shown in Fig. 2, Fig. 3 a to Fig. 3 c, Fig. 4 a to Fig. 4 c, Fig. 5, a kind of anticorrosion antenna of radar levelmeter, be installed on the bottom of the sensor 8 of radar levelmeter, its concrete structure can comprise: electromagnetic horn 1 and antenna shield 2; The little opening in top of electromagnetic horn 1 is fixed on the bottom of sensor 8; Electromagnetic horn 1 covers in antenna shield 2 by antenna shield 2, and the top of antenna shield 2 is fixed on the bottom of sensor 8 (in actual applications, the top of antenna shield 2 is fixed on the bottom of sensor 8 preferably by adaptor 4), and the bottom surface of antenna shield 2 is the inner concaves 21 to electromagnetic horn 1 inner recess.
Particularly, each parts of this anticorrosion antenna specifically can comprise following embodiment:
(1) electromagnetic horn 1 covers in antenna shield 2 by antenna shield 2, thus electromagnetic horn 1 and dust, water vapor, corrosive liquids and gas effectively can be isolated; And the bottom surface of antenna shield 2 adopts inner concave 21, not only can effectively prevent water droplet from assembling, and shorten the entire length of this anticorrosion antenna, effectively reduce and measure blind area.
In actual applications, the inner concave 21 of antenna shield 2 bottom surface can adopt cylindrical inner concave, truncated cone-shaped inner concave or conical inner concave, but preferably adopt the conical inner concave of the dead in line of axis and electromagnetic horn 1, and the apex angle ss of the shaft section of this conical inner concave can adopt and be greater than 0 ° and any angle being less than 180 °, this can prevent water droplet from assembling more effectively, enable the water droplet of water recovery by the base circumference landing of conical inner concave, thus effectively prevent the electromagnetic transmission of electromagnetic horn 1 is had an impact, enable the accessible transmitting and receiving to a greater extent of the electromagnetic wave of electromagnetic horn 1.
(2) this anticorrosion antenna can also comprise: flange 3 and adaptor 4; The lower side of sensor 8 can be provided with external thread, and the center of flange 3 is all connected with the lower thread of sensor 8 with the center of adaptor 4, and adaptor 4 is positioned at the below of flange 3; The open top of antenna shield 2 is provided with internal thread 22, and is threaded with adaptor 4 by this internal thread 22, thus makes antenna shield 2 be fixed on the bottom of sensor 8 by this adaptor 4; And the open-topped outer 23 of antenna shield 2 and the flange face of flange 3 fit tightly, this can make the open top of antenna shield 2 by the flange face sealing of flange 3, thus make dust, water vapor, corrosive liquids and gas cannot enter in antenna shield 2 by the open top of antenna shield 2, therefore ensure effective isolation of electromagnetic horn 1 and dust, water vapor, corrosive liquids and gas further.
In actual applications, this anticorrosion antenna open-topped outer 23 diameter preferably consistent with the sealing surface diameter of flange in standard GB/T/T9119-2000; As shown in Figure 5, in installation process, the center of the plain flange A of in-site measurement support can be passed in the bottom of this anticorrosion antenna, and the open-topped outer 23 of this anticorrosion antenna is positioned on the flange face of plain flange A; Flange 3 can be bolted with the plain flange A of in-site measurement support, thus make the open-topped outer 23 of this anticorrosion antenna be sandwiched between the plain flange A of flange 3 and in-site measurement support, this both can be avoided Hard link between the flange 3 of this anticorrosion antenna and the plain flange A of in-site measurement support, can strengthen again the sealing function between the flange 3 of this anticorrosion antenna and antenna shield 2.As can be seen here, antenna shield 2 preferably adopts dual fixed form, and its open-topped inside is threaded with adaptor 4, and its open-topped outer 23 be sandwiched in this anticorrosion antenna flange 3 and measure support plain flange between be fixed; When antenna shield 2 changed by needs, only need open the bolt of joint flange 3 and plain flange, and be screwed off by antenna shield 2 from adaptor 4, therefore maintain and replace is very convenient.
(3) itself have an impact to the Signal transmissions of electromagnetic horn 1 to protect antenna shield 2, the surrounding wall thickness of antenna shield 2 can not be blocked up, and therefore antenna shield 2 is generally used for the occasion of pressure≤0.5MPA; In order to promote the anti-pressure ability of antenna shield 2, as shown in Fig. 3 b and Fig. 3 c, between electromagnetic horn 1 and the inwall of antenna shield 2, resistance to compression support member 5 is preferably set, but because can not there be other chaff interferences at the big uncork place, bottom of electromagnetic horn 1, because the antenna shield 2 this increasing resistance to compression support member 5 can be applied to the occasion of pressure≤2MPA.
(4) antenna shield 2 can adopt anti-rot plastic to make, such as: the plastics such as teflon in prior art (PTFE), polypropylene (PP), Kynoar (PVDF), tygon (PE) can be adopted to make, its maximum temperature tolerates 260 DEG C, can well solve the occasion of this anticorrosion antenna applications at high-temp liquid.
In actual applications; antenna shield 2 can adopt prior art mold injection to form; this in protection of the environment and cost-saving basis, can increase the anticorrosion intensity of antenna shield 2, thus makes this anticorrosion antenna can be applied in the occasion of seriously corroded better.
(5) the little opening in the top of electromagnetic horn 1 is fixed on the bottom of sensor 8 preferably by bolt 11, and this both can ensure electromagnetic horn 1 and the strength of joint of sensor 8, and electromagnetic horn 1 can be facilitated again to mount and dismount.
Further, this anticorrosion antenna goes for the electromagnetic horn 1 of any form processing, such as: the injection molded electromagnetic horn 1 that go for the electromagnetic horn 1 be rolled into by steel plate bending as shown in fig. 4 a, also go for electromagnetic horn 1 that aluminium is as shown in Figure 4 b processed to form by drilling machine, can also be applicable to as illustrated in fig. 4 c.No matter this anticorrosion antenna applications is in the electromagnetic horn 1 of which kind of form processing, this anticorrosion antenna can the effect such as dust-proof, anti-condensation, anticorrosion, thus ensure that radar levelmeter also can accurately and reliably normally be measured in harsh environments, extend the serviceable life of radar levelmeter.
Except technique scheme, the utility model embodiment still provides a kind of radar levelmeter, and this radar levelmeter have employed the anticorrosion antenna described in technique scheme.
As fully visible, the ability such as dust-proof, anti-condensation, anticorrosion can not only be integrated in one by the utility model, and anti-corrosion capability is significantly strengthened, and the electromagnetic horn 1 of any form processing can be applicable to flexibly, thus ensure that radar levelmeter also can accurately and reliably normally be measured in harsh environments, extend the serviceable life of radar levelmeter.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (7)
1. an anticorrosion antenna for radar levelmeter, is installed on the bottom of the sensor (8) of radar levelmeter, it is characterized in that, comprising: electromagnetic horn (1) and antenna shield (2);
The little opening in top of electromagnetic horn (1) is fixed on the bottom of sensor (8);
Electromagnetic horn (1) covers in antenna shield (2) by antenna shield (2), and the top of antenna shield (2) is fixed on the bottom of sensor (8), and the bottom surface of antenna shield (2) is an inner concave (21) to electromagnetic horn (1) inner recess.
2. anticorrosion antenna according to claim 1, is characterized in that, described inner concave (21) is conical inner concave, and the drift angle of the shaft section of this conical inner concave (β) is greater than 0 ° and is less than 180 °.
3. anticorrosion antenna according to claim 1 and 2, is characterized in that, also comprise: flange (3) and adaptor (4); The center of flange (3) is all connected with the lower thread of sensor (8) with the center of adaptor (4), and adaptor (4) is positioned at the below of flange (3);
The open top of antenna shield (2) is provided with internal thread (22), and be threaded with adaptor (4) by this internal thread (22), and the open-topped outer (23) of antenna shield (2) fits tightly with the flange face of flange (3).
4. anticorrosion antenna according to claim 1 and 2, is characterized in that, is provided with resistance to compression support member (5) between the inwall of electromagnetic horn (1) and antenna shield (2).
5. anticorrosion antenna according to claim 1 and 2, is characterized in that, the little opening in top of electromagnetic horn (1) is fixed on the bottom of sensor (8) by bolt (11).
6. anticorrosion antenna according to claim 1 and 2, is characterized in that, antenna shield (2) adopts anti-rot plastic to make.
7. a radar levelmeter, is characterized in that, have employed the anticorrosion antenna in the claims 1 to 6 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351092.8U CN204854885U (en) | 2015-05-27 | 2015-05-27 | Radar level gauge's anticorrosive antenna and radar level gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351092.8U CN204854885U (en) | 2015-05-27 | 2015-05-27 | Radar level gauge's anticorrosive antenna and radar level gauge |
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| CN204854885U true CN204854885U (en) | 2015-12-09 |
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| CN201520351092.8U Active CN204854885U (en) | 2015-05-27 | 2015-05-27 | Radar level gauge's anticorrosive antenna and radar level gauge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389153A (en) * | 2017-07-14 | 2017-11-24 | 九江精密测试技术研究所 | A kind of explosion-proof frequency modulated continuous wave radar level meter |
| CN113758540A (en) * | 2020-06-03 | 2021-12-07 | 中国石油天然气股份有限公司 | Isolation device and liquid storage tank |
-
2015
- 2015-05-27 CN CN201520351092.8U patent/CN204854885U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389153A (en) * | 2017-07-14 | 2017-11-24 | 九江精密测试技术研究所 | A kind of explosion-proof frequency modulated continuous wave radar level meter |
| CN113758540A (en) * | 2020-06-03 | 2021-12-07 | 中国石油天然气股份有限公司 | Isolation device and liquid storage tank |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180112 Address after: 100095 room two, floor 2002, room 1, No. 7, Fengxian Middle Road, Haidian District, Beijing Patentee after: Beijing Precision Instrument Co., Ltd. Address before: 100095 Beijing, Yongfeng high tech industrial base, Feng Yin Road No. 7, building 2006, room 1, No. Patentee before: Xue Zhiyong |