CN210479708U

CN210479708U - Explosion-proof beacon and liquid storage tank

Info

Publication number: CN210479708U
Application number: CN201921405581.1U
Authority: CN
Inventors: 黄松华; 冯海泓; 朱冬青; 傅建华; 刘斌; 薛强; 赵业佳
Original assignee: Jiaxing Zhongke Acoustics Technology Co ltd
Current assignee: Jiaxing Zhongke Acoustics Technology Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-08
Anticipated expiration: 2029-08-27

Abstract

The utility model provides an explosion-proof beacon and liquid holding vessel relates to explosion-proof technical field, the utility model provides an explosion-proof beacon includes signal transmission subassembly, transducer, filler and safety cover, the safety cover be connected with the signal transmission subassembly and with signal transmission subassembly between form and hold the chamber, the transducer is located and is held the intracavity and be connected with the signal transmission subassembly, the transducer is used for the signal conversion of telecommunication with the signal transmission subassembly transmission for acoustic signal and launch, the filler is filled with and is held the chamber in order to get rid of the air between transducer and the safety cover. The utility model provides an it is full of the filler to hold the intracavity filling in the explosion-proof beacon, has got rid of the air between transducer and the safety cover, has reduced the decay that sound propagated to can launch bigger sound signal.

Description

Explosion-proof beacon and liquid storage tank

Technical Field

The utility model belongs to the technical field of explosion-proof technique and specifically relates to an explosion-proof beacon and liquid holding vessel are related to.

Background

With the development of electronic technology, the detection of liquid storage tanks in the petrochemical industry and large tank bodies for storing some flammable and explosive chemical liquids is completed by original manual work, and is gradually completed by detection robots. The detection requirement is changed from the original method that the tank body needs to be emptied and cleaned and then is detected, to the method that the tank body does not need to be emptied and the detection is directly carried out in the liquid.

The unmanned robot is used for working in the tank body, and the position of the robot in the tank body needs to be accurately positioned, so that the detection work of the tank body can be smoothly completed. Due to special use environment in a liquid medium and safety factor consideration, the use of the optical and radio wave sensors is greatly limited, and the acoustic navigation equipment has unique advantages in the liquid medium, can simultaneously meet the requirements of high precision and long distance of positioning, and can make up the defect that the radio wave in the liquid medium is quickly attenuated and cannot be used for positioning, but the traditional explosion-proof beacon has serious attenuation of a sound wave signal and cannot transmit a larger sound wave signal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an explosion-proof beacon can reduce the decay that the sound propagated, launches bigger sound signal.

In order to achieve the above object, the utility model provides a following technical scheme:

in a first aspect, the utility model provides an explosion-proof beacon, including signal transmission subassembly, transducer, filler and safety cover, the safety cover with the signal transmission subassembly connect and with form between the signal transmission subassembly and hold the chamber, the transducer is located hold the intracavity and with the signal transmission subassembly is connected, the transducer be used for with the signal conversion of signal transmission subassembly transmission is acoustical signal and launches, the filler is filled it is full to hold the chamber in order to get rid of the transducer with air between the safety cover.

Further, the filler is an ultrasonic couplant or vulcanized rubber.

Furthermore, the protective cover is fixedly connected with the signal transmission assembly through glue.

Further, the protective cover is detachably connected with the signal transmission assembly.

Further, the signal transmission subassembly includes explosion-proof shell, cable subassembly and circuit board, the both ends of explosion-proof shell respectively with the cable subassembly with the safety cover is connected, the circuit board is located in the explosion-proof shell, the cable subassembly with the transducer all with the circuit board is connected, the circuit board is used for enlargiing the signal that the cable subassembly transmitted drives the transducer sends acoustic signal.

Further, the explosion proof enclosure includes a housing, a first connector and a second connector, wherein:

one end of the first joint is connected with one end of the shell, and the other end of the first joint is connected with the protective cover;

the second joint with the other end of casing is connected, just be equipped with on the second joint and be used for the through-hole that cable subassembly passed.

Furthermore, the cable assembly comprises a cable body and a stuffing box sleeved on the cable body, the cable body is connected with the circuit board, and the end part of the stuffing box is abutted to the explosion-proof shell.

Further, the cable body is externally coated with an insulating layer.

Furthermore, the insulating layer is externally coated with a metal layer, and the metal layer is used for preventing the inside of the cable body from being corroded by external liquid.

In a second aspect, the present invention provides a liquid storage tank, including the utility model discloses the explosion-proof beacon that the first aspect provided.

The utility model provides an explosion-proof beacon and liquid holding vessel can produce following beneficial effect:

when using above-mentioned explosion-proof beacon, signal transmission subassembly transmits the signal of telecommunication to the transducer, and the transducer converts the signal of telecommunication into acoustic signal and launches, because the filler has filled up the chamber that holds between safety cover and the signal transmission subassembly, this makes can not have the air between transducer and the safety cover. Compared with the prior art, the utility model discloses it is full of the filler to hold the intracavity filling in the explosion-proof beacon that the first aspect provided, has got rid of the air between transducer and the safety cover, has reduced the decay that sound propagated to can launch bigger sound signal.

The utility model discloses the liquid holding vessel that the second aspect provided has the utility model discloses the explosion-proof beacon that the first aspect provided, thereby have the utility model discloses all beneficial effects that the explosion-proof beacon that the first aspect provided had.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of an explosion-proof beacon provided by an embodiment of the present invention;

fig. 2 is a left side view of an explosion-proof beacon provided by an embodiment of the present invention;

fig. 3 is a partial cross-sectional view of an explosion-proof beacon provided by an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3A;

fig. 5 is a partially enlarged view of a portion B of fig. 3.

Icon: 1-a signal transfer component; 11-explosion proof housing; 111-a housing; 112-a first joint; 113-a second linker; 12-a cable assembly; 121-a cable body; 122-stuffing box; 13-a circuit board; 2-a transducer; 3-a filler; 4-a protective cover; 5-an insulating layer; 6-metal layer.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Fig. 1 is a front view of an explosion-proof beacon provided by an embodiment of the present invention; fig. 2 is a left side view of an explosion-proof beacon provided by an embodiment of the present invention; fig. 3 is a partial cross-sectional view of an explosion-proof beacon provided by an embodiment of the present invention; FIG. 4 is an enlarged view of a portion of FIG. 3A; fig. 5 is a partially enlarged view of a portion B of fig. 3.

The embodiment of the first aspect of the utility model provides an explosion-proof beacon, as shown in fig. 1 to 4, including signal transmission subassembly 1, transducer 2, filler 3 and safety cover 4, safety cover 4 is connected with signal transmission subassembly 1 and forms between the signal transmission subassembly 1 and hold the chamber, and transducer 2 is located and is held the intracavity and be connected with signal transmission subassembly 1, and transducer 2 is used for converting the signal of telecommunication of signal transmission subassembly 1 transmission into acoustic signal and transmits, and filler 3 is filled and is held the chamber in order to get rid of the air between transducer 2 and the safety cover 4.

When using above-mentioned explosion-proof beacon, signal transmission subassembly transmits the signal of telecommunication to the transducer, and the transducer converts the signal of telecommunication into acoustic signal and launches, because the filler has filled up the chamber that holds between safety cover and the signal transmission subassembly, this makes can not have the air between transducer and the safety cover. Compared with the prior art, the embodiment of the first aspect of the utility model provides an it is full of the filler to hold the intracavity filling in the explosion-proof beacon, has got rid of the air between transducer and the safety cover, has reduced the decay that sound propagated to can launch bigger sound signal.

The transducer 2 is an electroacoustic transducer which receives transmitted electric signals and converts the electric signals into acoustic signals with the frequency within the range of 20 kHz-30 kHz and the source level exceeding 180 dB.

In at least one embodiment, the electroacoustic transducer is a piezoelectric ceramic transducer, which is driven by applying a sinusoidal voltage signal and can generate vibration by inverse piezoelectric effect. Meanwhile, the center frequency of the piezoelectric ceramic transducer is 25kHz, and the bandwidth is larger than 10kHz, so that a higher sound source level can be obtained when sound signals with the frequency band of 20 kHz-30 kHz are emitted.

In addition, the protective cover 4 is made of stainless steel with a certain thickness to ensure that the protective cover 4 can withstand the pressure generated by the gasoline explosion. The wall thickness can be 4-5 mm. In particular, the wall thickness may be 4mm, 4.5mm, 5 mm. In at least one embodiment, the protective cover 4 has a wall thickness of 4 mm.

Meanwhile, in order to reduce the attenuation of the acoustic signal generated by the explosion-proof protection cover as much as possible, in some embodiments, the inner diameter of the explosion-proof protection cover is only 1.8-2.2 mm larger than the outer diameter of the electroacoustic transducer, so that the propagation attenuation of the acoustic signal is reduced. Specifically, the inner diameter of the explosion-proof protective cover is only 1.8mm, 1.9mm, 2.0mm, 2.1mm and 2.2mm larger than the outer diameter of the electroacoustic transducer. In at least one embodiment, the inner diameter of the explosion-proof boot is only 2.0mm larger than the outer diameter of the electroacoustic transducer.

In some embodiments, the filler 3 may be an ultrasonic couplant, specifically, the ultrasonic couplant is an industrial couplant, and whether the industrial couplant has low viscosity or high viscosity can be selected according to actual needs.

In other embodiments, the filler 3 may be a vulcanizate.

It should be noted that the protective cover 4 may be fixedly connected or detachably connected to the signal transmission assembly 1.

In some embodiments, in order to provide good sealing performance between the protective cover 4 and the signal transmission assembly 1, the protective cover 4 is fixedly connected with the signal transmission assembly 1 through a colloid, the colloid can fill a gap between the protective cover 4 and the signal transmission assembly 1, so that external liquid is prevented from entering the signal transmission assembly 1 through the gap between the protective cover 4 and the signal transmission assembly 1 to affect the normal operation of the signal transmission assembly 1, and meanwhile, an air gap is prevented from being formed between the protective cover 4 and the signal transmission assembly 1, and the attenuation of acoustic signals during transmission is further reduced.

Wherein the colloid can be vulcanized rubber, hot melt adhesive and other colloids.

In other embodiments, the protective cover 4 is detachably connected to the signal transmission assembly 1 to facilitate the detachment of the protective cover from the signal transmission assembly 1.

Specifically, the protective cover 4 and the signal transmission assembly 1 may be connected by a screw thread, a snap connection, a screw connection, or the like. In at least one embodiment, the protective cover 4 is in threaded connection with the signal transmission assembly 1, an internal thread used for being matched with the signal transmission assembly is arranged on the protective cover 4, an external thread used for being matched with the signal transmission assembly is arranged on the signal transmission assembly 1, in order to enable the protective cover 4 to be connected with the signal transmission assembly 1 more firmly, a through hole is arranged on the protective cover 4, a threaded hole is arranged on the signal transmission assembly 1, and a screw penetrates through the through hole and is screwed into the threaded hole.

In some embodiments, as shown in fig. 3 and 5, the signal transmission assembly 1 includes an explosion-proof housing 11, a cable assembly 12, and a circuit board 13, wherein two ends of the explosion-proof housing 11 are respectively connected to the cable assembly 12 and the protective cover 4, the circuit board 13 is disposed in the explosion-proof housing 11, the cable assembly 12 and the transducer 2 are both connected to the circuit board 13, specifically, the cable assembly 12 and the transducer 2 are both electrically connected to the circuit board 13, and the circuit board 13 is configured to amplify a signal transmitted from the cable assembly 12 and drive the transducer 2 to emit an acoustic signal.

When the electronic cabin is used, the cable assembly provides power supply signals for the electronic cabin and transmits electric signals required to be transmitted, the circuit board 13 amplifies the signals transmitted by the cable assembly 12 and drives the transducer 2 to emit acoustic signals, and the transducer 2 converts the amplified electric signals into the acoustic signals to be transmitted. In use, the explosion-proof housing 11 can protect the circuit board 13.

Wherein, the explosion-proof housing 11 is made of stainless steel with a certain thickness to ensure that the explosion-proof housing 11 can bear the pressure generated by gasoline explosion. The wall thickness of the explosion-proof housing 11 can be selected from 4-5 mm. In particular, the wall thickness may be 4mm, 4.5mm, 5 mm. In at least one embodiment, the wall thickness of explosion proof housing 11 is 4 mm.

The circuit board 13 includes an electric signal amplifying circuit, and the circuit board 13 receives the electric signal transmitted from the explosion-proof cable, and transmits the amplified electric signal to the transducer 2. In at least one embodiment, the electrical signal amplification circuit is a differential operational amplifier amplification circuit.

In some embodiments, as shown in fig. 3 to 5, in order to facilitate the connection of both ends of explosion-proof enclosure 11 with protective cover 4 and cable assembly 12, explosion-proof enclosure 11 includes a housing 111, a first connector 112 and a second connector 113, wherein: the housing 111 can protect the circuit board 13; one end of the first joint 112 is connected to one end of the housing 111, and the other end is connected to the protective cover 4; the second connector 113 is connected to the other end of the housing 111, and a through hole for the cable assembly 12 to pass through is formed in the second connector 113.

The first joint 112 may be non-detachably connected to the housing 111, or may be detachably connected to the housing, and the first joint 112 may be non-detachably connected to the protective cover 4, or may be detachably connected to the protective cover. When the first joint 112 is non-detachably connected with the housing 111, the first joint 112 and the housing 111 may be fixedly connected by vulcanized rubber or other colloid; when the first connector 112 is detachably connected to the housing 111, the first connector 112 and the housing 111 may be connected by a screw, a snap, a screw, or the like. The first connector 112 and the protective cover 4 may be connected by the above connection methods.

In at least one embodiment, as shown in fig. 4, the first joint 112 is connected with the housing 111 by screw threads, and the first joint 112 is fastened with the housing 111 by screws; the first joint 112 is screwed with the protective cover 4, and the first joint 112 is fastened with the protective cover 4 by screws.

The second joint 113 and the housing 111 may be connected together in a non-detachable manner or in a detachable manner. When the second joint 113 is non-detachably connected with the housing 111, the second joint 113 and the housing 111 may be fixedly connected through vulcanized rubber or other colloid; when the second connector 113 is detachably connected to the housing 111, the second connector 113 and the housing 111 may be connected by a screw, a snap, a screw, or the like.

In at least one embodiment, as shown in fig. 5, the second joint 113 is screwed with the housing 111, and the second joint 113 is fastened with the housing 111 by screws.

In some embodiments, as shown in fig. 5, the cable assembly 12 includes a cable body 121 and a stuffing box 122 sleeved on the cable body 121, the cable body 121 is connected to the circuit board 13, and an end of the stuffing box 122 abuts against the explosion-proof housing 11, so as to prevent external liquid from entering the explosion-proof housing 11 from a gap between the cable body 121 and the explosion-proof housing 11, and ensure that the circuit board 13 in the explosion-proof housing 11 can work normally.

The cable body 121 includes at least four cables electrically connected to the circuit board 13, the two cables are used for providing a direct current power supply for the circuit board 13, and the two cables are used for providing an alternating current signal to be transmitted for the circuit board 13, so that external acquisition of electric energy and an electric signal is realized, the use of a high-energy battery is avoided, and the safety in use of the beacon is improved.

In addition, each cable may be an intrinsically safe cable, which does not cause an explosion due to a spark caused by a short circuit or other reasons by limiting the operating current of the cable body 121. The transmission current in the cable body 121 is less than 100mA, and belongs to the IA level.

The stuffing box 122 is mainly composed of stuffing, a water seal ring, a stuffing cylinder, a stuffing gland and a water seal pipe, so that external liquid is prevented from entering the explosion-proof housing 11 through a gap between the cable body 121 and the explosion-proof housing 11, and the stuffing inside the explosion-proof housing can be made of fiber fabrics, rubber, engineering plastics, metal materials and the like.

In some embodiments, to improve safety in hazardous environments, the cable body 121 is externally coated with an insulating layer 5.

In some embodiments, the insulating layer 5 is further coated with a metal layer 6, and the metal layer 6 is used for preventing the inside of the cable body 121 from being corroded by external liquid, so that the explosion-proof performance of the cable is improved.

The embodiment of the second aspect of the utility model provides a liquid storage tank, the utility model discloses the embodiment of the second aspect provides a liquid storage tank includes above-mentioned explosion-proof beacon.

The utility model discloses the liquid holding vessel that the embodiment of second aspect provided has the utility model discloses the explosion-proof beacon that the embodiment of first aspect provided, thereby have the utility model discloses all beneficial effects that the explosion-proof beacon that the embodiment of first aspect provided had.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The utility model provides an explosion-proof beacon, its characterized in that, includes signal transmission subassembly (1), transducer (2), filler (3) and safety cover (4), safety cover (4) with signal transmission subassembly (1) connect and with form between the signal transmission subassembly (1) and hold the chamber, transducer (2) are located hold the intracavity and with signal transmission subassembly (1) are connected, transducer (2) are used for with the signal conversion of signal transmission subassembly (1) transmission is acoustical signal and transmission, filler (3) are filled hold the chamber in order to get rid of transducer (2) with air between safety cover (4).

2. Explosion-proof beacon according to claim 1, characterized in that the filler (3) is an ultrasound couplant or a vulcanised rubber.

3. Explosion-proof beacon according to claim 1, characterized in that the protective cover (4) is fixedly connected to the signal transmission assembly (1) by means of a glue.

4. Explosion-proof beacon according to claim 1, characterized in that the protective cover (4) is detachably connected to the signal transmission assembly (1).

5. The explosion-proof beacon according to claim 1, wherein the signal transmission assembly (1) comprises an explosion-proof housing (11), a cable assembly (12) and a circuit board (13), two ends of the explosion-proof housing (11) are respectively connected with the cable assembly (12) and the protective cover (4), the circuit board (13) is arranged in the explosion-proof housing (11), the cable assembly (12) and the transducer (2) are both connected with the circuit board (13), and the circuit board (13) is used for amplifying a signal transmitted from the cable assembly (12) and driving the transducer (2) to emit an acoustic signal.

6. The explosion-proof beacon according to claim 5, characterized in that the explosion-proof housing (11) comprises a housing (111), a first joint (112) and a second joint (113), wherein:

one end of the first joint (112) is connected with one end of the shell (111), and the other end of the first joint is connected with the protective cover (4);

the second connector (113) is connected with the other end of the shell (111), and a through hole for the cable assembly (12) to pass through is formed in the second connector (113).

7. The explosion-proof beacon according to claim 5, characterized in that the cable assembly (12) comprises a cable body (121) and a stuffing box (122) sleeved on the cable body (121), the cable body (121) is connected with the circuit board (13), and the end of the stuffing box (122) is against the explosion-proof housing (11).

8. Explosion-proof beacon according to claim 7, characterized in that the cable body (121) is externally coated with an insulating layer (5).

9. Explosion-proof beacon according to claim 8, characterized in that the insulating layer (5) is externally coated with a metal layer (6), the metal layer (6) being used to protect the inside of the cable body (121) from corrosion by external liquids.

10. A liquid storage tank comprising an explosion-proof beacon as claimed in any one of claims 1 to 9.