Summary of the invention
At least one in order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of high frequencies for level gaugingModule, structure is simple, and sealing means are simple and effective, improves the production efficiency of high-frequency model and radar levelmeter.
In order to reach the purpose of the present invention, the technical solution adopted by the present invention is as follows:
The embodiment of the invention provides a kind of high-frequency models for level gauging, comprising: emitter, guide wave device andPrinted circuit board, wherein
The emitter includes radiating element, and the radiating element installation is on the printed circuit board；
The guide wave device includes wave guiding elements and fixed lid, and the wave guiding elements and the fixed lid are fixed and connectedIt connects, the fixed lid is fixedly connected with the printed circuit board, and guided wave access, the guided wave are formed in the wave guiding elementsOne end close to the printed circuit board of element is equipped with seal cap, filled with close between the seal cap and the wave guiding elementsSealing, forms radial chamber between the seal cap and the printed circuit board, the radiating element is located in the radial chamber.
Optionally, the fixed lid is an integral structure with the wave guiding elements.
Optionally, the fixed lid is non-conductive lid, and the wave guiding elements are metalwork, the fixed lid and instituteWave guiding elements are stated to fix by injection molding；
Alternatively, the fixed lid and the wave guiding elements are metalwork.
Optionally, the emitter further includes radar signal R-T unit, and the radar signal R-T unit is mounted onOn the printed circuit board and it is located in the fixed lid, the radar signal R-T unit is electrically connected with the radiating elementIt connects.
Optionally, the inner wall of the fixed lid is equipped with absorbing material.
Optionally, the fixed lid includes bottom wall and side wall, and the side wall is abutted with the printed circuit board, the suctionWave material is arranged on the inner wall of the bottom wall.
Optionally, sealant is filled between the fixed lid and the printed circuit board.
Optionally, the wave guiding elements pass through the fixed lid, and the fixed lid is equipped with and surrounds the guided waveThe annular protrusion of element forms the filled cavity for accommodating the sealant between the annular protrusion and the wave guiding elements.
Optionally, the end face of one end of the neighbouring printed circuit of the seal cap is equipped with groove, the groove withThe printed circuit board cooperatively forms the radial chamber.
The embodiment of the invention provides a kind of radar levelmeter, the radar levelmeter includes high frequency mould described aboveBlock.
Technical solution of the present invention compared with prior art, has the following beneficial effects:
One end of high-frequency model provided in an embodiment of the present invention, the close printed circuit board of wave guiding elements is arranged with sealingCap, and the filling with sealant between seal cap and wave guiding elements prevent extraneous gas so that seal cap can seal guided wave accessEnter in level meter from guided wave access, and the mode for sealing guided wave access is simple, saves the operating time, improve assembly efficiency；It is fixed lid and is an integral structure with wave guiding elements, reduces the quantity of components in high-frequency model, helps to improve assemblyEfficiency；Radar signal R-T unit is located in the fixed lid, and filled with sealing between fixed lid and printed circuit boardGlue can be better protected from extraneous gas from the gap between fixed lid and printed circuit board and enter fixed lid portion inside, canPreferably to reach explosion-proof security purpose.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specificationIt obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, rightSpecifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with thisThe embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the decomposition texture schematic diagram according to the embodiment of the present invention for the high-frequency model of level gauging；
Fig. 2 is another decomposition texture schematic diagram of high-frequency model shown in Fig. 1；
Fig. 3 is the schematic cross-sectional view of high-frequency model shown in Fig. 1；
Fig. 4 is another schematic cross-sectional view of high-frequency model shown in Fig. 1；
Fig. 5 is the sectional structure signal according to another embodiment of the present invention for the high-frequency model of level gaugingFigure；
Fig. 6 is another schematic cross-sectional view of high-frequency model shown in Fig. 5.
Appended drawing reference:
1- radiating element, 2- printed circuit board, 3- wave guiding elements, 30- guided wave access, the fixed lid of 4-, 40- bottom wall, 41-Side wall, 42- filled cavity, 43- protrusion, 5- seal cap, 50- groove, 6- sealant, 7- radial chamber, 8- absorbing material, 9- screw,10- radar signal R-T unit.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present inventionEmbodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the applicationFeature can mutual any combination.
As Figure 1-Figure 4, the embodiment of the invention provides a kind of high-frequency models for level gauging, comprising: transmittingDevice, guide wave device and printed circuit board 2.
Wherein, emitter includes radiating element 1, and radiating element 1 is mounted on printed circuit board 2.Radiating element 1 can be toOuter transmission of electromagnetic signals.
Guide wave device includes wave guiding elements 3 and fixed lid 4, and wave guiding elements 3 are fixedly connected with fixed lid 4, fixed lidBody 4 is fixedly connected with printed circuit board 2, to realize the fixation of guide wave device Yu printed circuit board 2.
Guided wave access 30 is formed in wave guiding elements 3, one end of the close printed circuit board 2 of wave guiding elements 3 is equipped with sealingCap 5 is filled with sealant 6 between seal cap 5 and wave guiding elements 3, radial chamber 7 is formed between seal cap 5 and printed circuit board 2,Radiating element 1 is located in radial chamber 7.The electromagnetic signal that radiating element 1 emits may pass through seal cap 5 and enter guided wave access 30, andIt is transmitted via guided wave access 30.
Seal cap 5 is set in outside one end of close printed circuit board 2 of wave guiding elements 3, and in seal cap 5 and wave guiding elementsFilling with sealant 6 between 3 prevent extraneous gas from entering from guided wave access 30 solid so that seal cap 5 can seal guided wave access 30Determine to play explosion-proof purpose inside lid 4.In addition, in such a way that seal cap 5 seals guided wave access with the cooperation of sealant 6Simply, the time needed for saving seal operation helps to improve the assembly efficiency of high-frequency model.
Optionally, fixed lid 4 is an integral structure with wave guiding elements 3.
Integral structure reduces the quantity of components in high-frequency model, helps to improve the assembly efficiency of high-frequency model,And then help to improve the production efficiency of radar levelmeter.
Optionally, fixed lid 4 is non-conductive lid, and wave guiding elements 3 are metalwork, and fixed lid 4 and wave guiding elements 3 are logicalInjection molding is crossed to fix.
Fixed lid 4 is non-conductive lid, in order to avoid short circuit occurs between fixed lid 4 and printed circuit board 2；Wave guiding elements3 be metalwork, to limit the transmission path of electromagnetic signal.Fixed lid 4 is fixed with wave guiding elements 3 by injection molding, processing sideJust, and to seal between fixed lid 4 and wave guiding elements 3, prevent extraneous gas between fixed lid 4 and wave guiding elements 3Gap enter inside fixed lid 4.
Optionally, fixed lid 4 and wave guiding elements 3 are metalwork.
Fixed lid 4 and wave guiding elements 3 are metalwork, so that the two can be integrally formed, it is easy to process, it helps to improveProduction efficiency.
Optionally, as shown in Figure 3 and Figure 5, emitter further includes radar signal R-T unit 10, radar signal transmitting-receiving dressIt sets 10 to be mounted on printed circuit board 2 and be located in fixed lid 4, radar signal R-T unit 10 is electrically connected with radiating element 1.
Radar transmit-receive device 10 can produce the electromagnetic signal emitted by radiating element 1, and radar transmit-receive device 10, which is located at, to be fixedIn lid 4, fixed lid 4 can play a protective role to radar transmit-receive device 10.
Optionally, which includes radar transmit-receive chip, and by entering microstrip line equal to 1 electricity of radiating elementConnection.
Optionally, as shown in Figure 3 and Figure 5, the inner wall of fixed lid 4 is equipped with absorbing material 8.Absorbing material 8 can be inhaledThe electromagnetic wave that electronic device (such as connecting the microstrip line of radar transmit-receive device 10 and radiating element 1) generates is received, to radar transmit-receiveDevice 10 is electromagnetically shielded.
Optionally, as shown in Figure 3 and Figure 5, fixed lid 4 includes bottom wall 40 and side wall 41, side wall 41 and printed circuit board 2It abuts, absorbing material 8 is arranged on the inner wall of bottom wall 40.
Absorbing material 8 is arranged on the inner wall of the bottom wall 40 of fixed lid 4, so that absorbing material 8 and printed circuit board 2It relatively, being capable of the electromagnetic wave that generates of the electronic device preferably on absorbing circuit plate.
It should be appreciated that absorbing material 8 can also be arranged on the inner wall of the side wall 41 of fixed lid 4, or exist simultaneouslyAbsorbing material 8 is set on the bottom wall 40 of fixed lid 4 and the inner wall of side wall 41.
Optionally, as Figure 1-Figure 4, fixed lid 4 and printed circuit board 2 are fixed by screw 9, and fixed lid 4Sealant (not shown) is filled between printed circuit board 2.
Fixed lid 4 and factor circuit plate by screw 9 it is fixed after, then fill out between fixed lid 4 and printed circuit board 2Sealant is filled, the clearance seal between lid 4 and printed circuit board 2 will be fixed, extraneous gas can be prevented from fixed lid 4Gap between printed circuit board 2 enters inside fixed lid 4, can preferably reach explosion-proof security purpose.
In Fig. 1 and embodiment shown in Fig. 2, fixed lid 4 passes through 49 (such as cross recesses of screw with printed circuit board 2Pan head screw) it is fixed.
Optionally, as shown in Figure 1, wave guiding elements 3 pass through fixed lid 4, fixed lid 4, which is equipped with, surrounds wave guiding elements 3Annular protrusion, between annular protrusion and wave guiding elements 3 formed accommodate sealant 6 filled cavity 42.
Fixed lid 4 is equipped with the annular protrusion around wave guiding elements 3, and in the outside of annular protrusion and wave guiding elements 3Filled cavity 42, after seal cap 5 is set on wave guiding elements 3, the filling with sealant into the filled cavity 42 are formed between wall 416, it realizes and is sealed between seal cap 5 and wave guiding elements 3.Filling with sealant 6 is convenient in the setting of annular protrusion and filled cavity 42.
In the embodiment shown in fig. 1, wave guiding elements 3 are set to one end of fixed lid 4, therefore the side of fixed lid 4A part of wall 41 cooperatively forms annular protrusion with the protrusion 43 on the bottom wall 40 that fixed lid 4 is arranged in.
It should be appreciated that a complete annular protrusion of circle can be arranged on the bottom wall 40 of wave guiding elements 3.Annular protrusion can be withRounded, rectangular or other shapes.
Optionally, which is epoxy glue.
Optionally, as shown in Figure 1, the end face of one end of the neighbouring printed circuit of seal cap 5 is equipped with groove 50.The groove50 cooperatively form radial chamber 7 with printed circuit board 2, for accommodating radiating element 1.
Optionally, which can be for isometrical cylindrical cavity or with the cavity of variable diameter.
In Fig. 3-embodiment shown in Fig. 4, guided wave access 30 is along the direction far from radiating element 1, and internal diameter is graduallyThe conical cavity of increase.
In Fig. 5-embodiment shown in fig. 6, guided wave access 30 includes setting gradually along the direction far from radiating element 1First segment, second segment and third section, wherein first segment and the internal diameter of third section remain unchanged, and the internal diameter of second segment is along separateThe direction of radiating element 1 is gradually reduced.
The embodiment of the invention provides a kind of radar levelmeter, the radar levelmeter includes high frequency mould described aboveBlock.
Although embodiment disclosed by the application is as above, the content only for ease of understanding the application and useEmbodiment is not limited to the application.Technical staff in any the application fields, is taken off not departing from the applicationUnder the premise of the spirit and scope of dew, any modification and variation, but the application can be carried out in the form and details of implementationScope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.