Gas detector

Abstract

The utility model discloses a gas detector which comprises an upper shell with an opening at the rear end and a lower shell with an opening at the front end, the openings of the upper shell and the lower shell are correspondingly arranged to form an accommodating inner cavity, a circuit board is arranged at the rear part of the accommodating inner cavity, a gas detection module is arranged on the front surface of the circuit board, and the gas detection module horizontally penetrates through the front wall of the upper shell; the front end of the gas detection module is in contact with an external space; the rear end of the gas detection module is connected with a circuit board which provides power through a power supply system arranged at the rear end; the gas detector can detect the content of external gas, has an energy storage function, and can convert energy in other forms into chemical energy for self use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of detection instrument, especially to a gas detector. BACKGROUND

[0002] The gas detector is an instrument tool for detecting gas leakage concentration, including: portable gas detector, handheld gas detector, fixed gas detector, online gas detector, etc. The gas detector can detect the concentration of the set gas existing in the environment through the gas sensor. The gas sensor is based on the detection target classification and is used to detect the gas composition and content. That is, all sensors used to detect the gas composition and concentration are called gas sensors. The working of the gas sensor usually needs a corresponding power supply system. However, the gas detection work usually takes a long time, and the gas detector is used frequently. Especially when the staff is in outdoor detection, far away from the power supply, the endurance of the gas detector plays a key role in the success of the detection work.

[0003] A gas detector known by the applicant (CN 116183815 A) discloses a detection instrument including a device board and its top, a laser positioning component, an obstacle warning component and a protection component. The laser positioning component includes a laser generator and a turnover mechanism. The laser generator is housed in the electromagnetic protection component. The turnover mechanism can transfer the laser generator in front of the optical lens of the detection instrument and make it parallel to the orientation of the optical lens. The laser generator can image a cross laser on the target, and the intersection point of the cross laser coincides with the imaging center point of the detection instrument. The protection component includes a first protection box fixedly installed on the device board, a second protection box associated with the second protection box, and a control mechanism for driving the second protection box to cooperate with the first protection box to close the detection instrument.

[0004] The above-mentioned application has the following problems:

[0005] 1. The gas detector has high energy consumption, and the energy storage method is single, which cannot meet the long-term outdoor operation.

[0006] 2. The gas detector has no lighting function, and the adaptable working environment is single. The detection work needs to be illuminated by external lighting equipment, which increases the detection difficulty and reduces the detection efficiency. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing a gas detector which can detect the content of external gas and has energy storage function to convert other forms of energy into chemical energy for its own use.

[0008] The utility model adopts the following technical solutions:

[0009] A gas detector, comprising a rear-end open upper shell and a front-end open lower shell, the upper shell and the lower shell are correspondingly arranged to form a containing inner cavity at the opening, a circuit board is arranged at the rear of the containing inner cavity, a gas detection module is arranged on the front surface of the circuit board, the gas detection module is horizontally arranged through the front wall of the upper shell, and the front end of the gas detection module is in contact with the external space; the rear end of the gas detection module is connected with the circuit board, and the circuit board is powered by a power supply system arranged at the rear end; the power supply system comprises a storage battery arranged at the rear side of the circuit board and connected with the circuit board, and an electric energy conversion mechanism connected with the storage battery, the storage battery converts chemical energy into electric energy to provide power for the circuit board, and the electric energy conversion mechanism is used for converting light energy, mechanical energy and external electric energy into chemical energy and storing the chemical energy in the storage battery; a signal display unit is further arranged on the front surface of the upper shell, the signal display unit is connected with the circuit board, and the signal display unit is used for displaying a signal when the gas detection module detects a set gas concentration.

[0010] Further, the electric energy conversion mechanism comprises a current conversion chip arranged on the lower side of the circuit board, the upper part of the current conversion chip is connected with the circuit board, and the lower part of the current conversion chip is connected with a charging port, the charging port is vertically arranged and penetrates the bottom wall of the lower shell.

[0011] Further, the electric energy conversion mechanism further comprises a solar charging plate arranged on the rear end outer surface of the lower shell, and the inner end of the solar charging plate is connected with the storage battery.

[0012] Further, the electric energy conversion mechanism further comprises a generator arranged on the upper part of the containing inner cavity, the generator is arranged front and rear, the rear side output end of the generator is connected with the storage battery, and the front side input shaft of the generator is connected with a mechanical driving part, the mechanical driving part is used for manual driving of the staff, so that the input shaft of the generator rotates, the mechanical energy is converted into chemical energy, and the chemical energy is stored in the storage battery.

[0013] Further, the mechanical driving part comprises a driven gear connected with the input shaft of the front part of the generator, the driven gear is engaged with a driving gear arranged on the lower side, the driving gear is coaxially sleeved with a front and rear horizontally arranged driving shaft, the front end of the driving shaft is fixedly connected with the driving gear, and the rear end of the driving shaft is rotatably connected with the lower shell; in order to facilitate the staff to manually drive the driving gear to rotate, the rear end of the driving gear is further provided with a pull wire type driving structure, and the pull wire type driving structure can drive the driving gear to rotate through the hand pulling force of the staff.

[0014] Further, the pull wire type driving structure comprises a pull wire containing groove arranged in the circumferential direction of the driving shaft, the bottom of the pull wire containing groove is fixedly connected with the inner end of the pull wire, and the pull wire has a set length and flexibility.

[0015] Further, the pull wire type driving structure further comprises a coil spring coaxially arranged at the rear of the driving shaft, the coil spring is sleeved with a coil spring mounting seat, the rear end of the coil spring mounting seat is fixedly connected with the inner end surface of the lower shell, the inner end of the coil spring is fixedly connected with the periphery of the driving shaft, and the outer end of the coil spring is fixedly connected with the periphery of the inner cavity of the coil spring mounting seat.

[0016] Further, the pull wire type driving structure further comprises a coil spring coaxially arranged at the rear of the driving shaft, the coil spring is sleeved with a coil spring mounting seat, the rear end of the coil spring mounting seat is fixedly connected with the inner end surface of the lower shell, the inner end of the coil spring is fixedly connected with the periphery of the driving shaft, and the outer end of the coil spring is fixedly connected with the periphery of the inner cavity of the coil spring mounting seat.

[0017] Further, the pull wire type driving structure further comprises a coil spring coaxially arranged at the rear of the driving shaft, the coil spring is sleeved with a coil spring mounting seat, the rear end of the coil spring mounting seat is fixedly connected with the inner end surface of the lower shell, the inner end of the coil spring is fixedly connected with the periphery of the driving shaft, and the outer end of the coil spring is fixedly connected with the periphery of the inner cavity of the coil spring mounting seat.

[0018] Further, the pull wire type driving structure further comprises a coil spring coaxially arranged at the rear of the driving shaft, the coil spring is sleeved with a coil spring mounting seat, the rear end of the coil spring mounting seat is fixedly connected with the inner end surface of the lower shell, the inner end of the coil spring is fixedly connected with the periphery of the driving shaft, and the outer end of the coil spring is fixedly connected with the periphery of the inner cavity of the coil spring mounting seat.

[0019] The current conversion chip can convert external electric energy into chemical energy and store the chemical energy in the battery of the gas detector.

[0020] The solar charging plate can convert external light energy into chemical energy and store the chemical energy in the battery of the gas detector.

[0021] The mechanical driving part can convert external mechanical energy into chemical energy and store the chemical energy in the battery of the gas detector. ACCURATE DRAWINGS

[0022] Figure 1 It is a structural schematic view of the upper shell in the utility model;

[0023] Figure 2 It is a structural schematic view of the pull wire in the utility model;

[0024] Figure 3 It is the structural schematic view of the charging port in the utility model;

[0025] Figure 4 It is the structural schematic view of the driven gear in the utility model;

[0026] Figure 5 It is the structural schematic view of the gear ring in the utility model;

[0027] Figure 6 It is the structural schematic view of the solar charging plate in the utility model.

[0028] In the drawing, 1, upper shell; 2, lower shell; 3, accommodating inner cavity; 4, circuit board; 5, gas detection module; 6, battery; 7, solar charging plate; 8, generator; 9, driven gear; 10, driving gear; 11, pull wire accommodating groove; 12, pull wire; 13, coil spring; 14, charging port; 15, driving shaft; 16, gear ring; 17, ratchet; 18, pawl mounting seat; 19, mounting shaft; 20, pawl; 21, lamp shell; 22, reflecting cup; 23, LED lamp bead; 24, optical glass; 25, signal display unit. DETAILED DESCRIPTION

[0029] The utility model will be described in detail below in combination with the drawings and examples:

[0030] As Figures 1 to 6 shown, the gas detector of the utility model, including the upper shell 1 of rear end opening and the lower shell 2 of front end opening, the upper shell 1 and the lower shell 2 opening place correspond to set up and form accommodating inner cavity 3, accommodating inner cavity 3 rear part sets up circuit board 4, and circuit board 4 front surface sets up gas detection module 5, and gas detection module 5 horizontal wear upper shell 1 front wall, and gas detection module front end is contacted with outside space;Gas detection module rear end connects circuit board 4, and circuit board 4 is provided with power by setting at rear end power supply system;Power supply system includes the battery 6 of setting at circuit board 4 rear side and being connected with circuit board 4 and the electric energy conversion mechanism connected with battery 6, and battery 6 provides power for circuit board 4 by converting chemical energy into electric energy, and electric energy conversion mechanism is used to convert light energy, mechanical energy and external electric energy into chemical energy and store in battery 6 inside;The upper shell 1 front surface still is provided with signal display unit 25, and signal display unit 25 connects circuit board 4, and signal display unit 25 is used to display signal when gas detection module 5 detects the set gas concentration.

[0031] In the working process, battery 6 provides power for circuit board 4 by the electric energy of chemical energy conversion of itself, when the gas detector is in certain concentration set gas, set gas and gas detection module 5 react and produce the electric signal proportional to set gas concentration, and electric signal is converted into the signal that staff can identify by signal display unit 25, and completes gas concentration detection.

[0032] Due to the limited storage capacity of the battery 6 itself, when the battery 6 is in a low energy state, the battery 6 can be charged by converting external electrical energy into the chemical energy of the battery 6 itself;

[0033] In the utility model, the electric energy conversion mechanism includes a current conversion chip arranged on the lower side of the circuit board 4, the upper part of the current conversion chip is connected with the circuit board 4, the lower part is connected with the charging port 14, the charging port 14 is vertically arranged and penetrates the bottom wall of the lower shell 2;

[0034] During operation, the charging device is connected with external electrical energy and the charging port 14, so that the external electrical energy is converted into the chemical energy of the battery 6 itself by the current conversion chip and is stored in the battery 6, thereby charging the battery 6;

[0035] When outdoor gas detection is carried out, the gas detector is in the outdoor environment and lacks external equipment to provide electrical energy; however, since there is sufficient light energy in the outdoor environment, in order to convert the light energy into the chemical energy of the battery 6 itself and charge the battery 6, the electric energy conversion mechanism further includes a solar charging panel 7 arranged on the rear end face of the lower shell 2, and the inner end of the solar charging panel 7 is connected with the battery 6;

[0036] During operation, the solar charging panel 7 is exposed to light, and the solar charging panel 7 can convert the light energy into the chemical energy of the battery 6 itself and store the chemical energy in the battery 6, thereby charging the battery 6.

[0037] When outdoor gas detection is carried out, if the gas detector is in a dark place and the light energy is insufficient, in order to convert the mechanical energy into chemical energy and store the chemical energy in the battery 6, thereby charging the battery 6, the electric energy conversion mechanism further includes a generator 8 arranged on the upper part of the accommodating inner cavity 3, the generator 8 is arranged front and rear and the rear output end is connected with the battery 6, and the front input shaft of the generator 8 is connected with a mechanical driving part, the mechanical driving part is used for manual driving by the worker, so that the input shaft of the generator 8 rotates, the mechanical energy is converted into chemical energy, the chemical energy is stored in the battery 6, and the battery 6 is charged.

[0038] In the embodiment, the mechanical driving part includes a driven gear 9 connected with the input shaft of the front part of the generator 8, the driven gear 9 is engaged with a driving gear 10 arranged on the lower side, the driving gear 10 is coaxially sleeved with a driving shaft 15 arranged horizontally front and rear, the driving gear 10 is fixedly connected with the front end of the driving shaft 15, and the rear end of the driving shaft 15 is rotatably connected with the bottom end of the lower shell 2; in order to facilitate the worker to manually drive the driving gear 10 to rotate, the rear end of the driving gear 10 is further provided with a pull wire type driving structure, the pull wire type driving structure can drive the driving gear 10 to rotate through the hand pulling force of the worker;

[0039] In the embodiment, the pull wire type driving structure comprises a pull wire accommodating groove 11 opened in the circumferential direction of the driving shaft 15, the bottom of the pull wire accommodating groove 11 is fixedly connected with the inner end of a pull wire 12, the pull wire 12 has a set length and flexibility, in the initial state, the pull wire 12 is wound around the pull wire accommodating groove 11 for a set number of turns, and the outermost end of the pull wire 12 is located outside the lower shell 2, and the outermost end of the pull wire 12 is provided with a pull ring.

[0040] In order to make the outermost end of the pull wire 12 have the function of automatic rewinding after being pulled out for a set length, the pull wire 12 is repeatedly pulled out through the function of automatic rewinding, so as to repeatedly drive the input shaft of the generator 8 to rotate, and charge the battery 6; in the utility model, the pull wire type driving structure further comprises a coil spring 13 coaxially arranged at the rear part of the driving shaft 15, the coil spring 13 is sleeved with a coil spring mounting seat 18, and the rear end of the coil spring mounting seat 18 is fixedly connected with the inner end surface of the lower shell 2, the inner end of the coil spring 13 is fixedly connected with the circumferential direction of the driving shaft 15, and the outer end of the coil spring 13 is fixedly connected with the circumferential direction of the inner cavity of the coil spring mounting seat 18;

[0041] Since the input shaft of the generator 8 can only rotate in a set direction, in the utility model, an inertia ratchet wheel is coaxially arranged between the driven gear 9 and the input shaft of the generator 8; the front end of the inertia ratchet wheel is connected with the driven gear 9 on the inner side, and the rear end is connected with the input shaft of the generator 8; under the action of the inertia ratchet wheel, the driving gear 10 drives the driven gear 9 to rotate forward, the driven gear 9 is connected with the input shaft of the generator 8, and drives the generator 8 to generate electricity; when the coil spring 13 is wound, the driving gear 10 drives the driven gear 9 to rotate reversely, the driven gear 9 is disconnected with the input shaft of the generator 8 under the action of the inertia ratchet wheel, and cannot drive the input shaft of the generator 8 to rotate reversely;

[0042] In the working process, when the battery 6 in the gas detector is in the state of power shortage, the detection personnel pull the pull wire 12 outside, the pull wire 12 wound in the circumferential direction of the driving shaft 15 drives the driving gear 10 to rotate forward under the action of friction, the driven gear 9 engaged with the driving gear 10 rotates and drives the inertia ratchet wheel fixed at the rear part of the driven gear 9 to drive the input shaft of the generator 8 to rotate, and charges the battery 6, at this time, the coil spring 13 connected below the driving gear 10 is in the energy storage state, so that the pull wire 12 has a tendency to be wound around the driving shaft 15, at this time, the outer end of the pull wire 12 is loosened, the coil spring 13 releases energy to drive the driving shaft 15 to rotate and wind the pull wire 12, so that the outer end of the pull wire 12 returns to the initial position, at the same time, the driving gear 10 connected with the driving shaft 15 rotates reversely, and drives the driven gear 9 engaged with the driving gear 10 to rotate reversely, the inertia ratchet wheel fixed with the driven gear 9 reverses, that is, the ratchet wheel is not connected with the input shaft of the generator 8, so that the input shaft of the generator 8 will not reverse due to the reverse rotation of the inertia ratchet wheel, and the generator 8 will not be damaged;

[0043] In this embodiment, the inertial ratchet includes a gear ring 16 connected with the input shaft of the generator 8, the gear ring 16 is a front-end open cylinder, the inner cavity of the gear ring 16 is circumferentially distributed with ratchet teeth 17, the rear end of the gear ring 16 is fixed with the input shaft of the generator 8, the inner cavity of the gear ring 16 is provided with a pawl mounting seat 18, the pawl mounting seat 18 is rhombic, support shafts are arranged through the geometric center of the pawl mounting seat 18 in front and back, the front end of the support shaft is coaxially fixed with the driven gear 9, the middle part of the support shaft is fixedly arranged with the pawl mounting seat 18, and the rear end of the support shaft is rotationally connected with the bottom end of the gear ring 16. One end of the pawl mounting seat 18 is horizontally provided with a mounting shaft 19 in front and back, the mounting shaft 19 is fixed with the front end face of the pawl mounting seat 18, the mounting shaft 19 is rotationally connected with a pawl 20 arranged outside the mounting shaft 19, the outer end of the pawl 20 is correspondingly arranged with the ratchet teeth 17, and the pawl 20 is arranged at a set angle with the diagonal line in the vertical direction of the pawl mounting seat 18.

[0044] In the working process, the driving gear 10 rotates forward, the driving gear 10 drives the driven gear 9 to rotate, and the pawl mounting seat 18 rotates with the driven gear 9, under the action of the centrifugal force, the acute angle between the diagonal line in the vertical direction of the pawl mounting seat 18 and the pawl 20 at the outer end becomes smaller and smaller until the pawl 20 cannot move relative to the gear ring 16, the pawl mounting seat 18, the pawl 20 and the gear ring 16 rotate as a whole, that is, the driven gear 9 drives the input shaft of the generator 8 to rotate; when the driving gear 10 reversely rotates, the driving gear 10 drives the driven gear 9 to reversely rotate, and the pawl mounting seat 18 reversely rotates with the driven gear 9, in the reversely rotating process of the pawl mounting seat 18, under the extrusion of the ratchet teeth 17 in the inner cavity of the gear ring 16, the acute angle between the diagonal line in the vertical direction of the pawl mounting seat 18 and the pawl 20 becomes larger and larger, the pawl 20 moves away from the gear ring 16 until the pawl 20 is separated from the ratchet teeth 17 of the gear ring 16, the driven gear 9 is no longer connected with the gear ring 16, and the driven gear 9 cannot drive the input shaft of the generator 8 fixed with the gear ring 16 to rotate through the gear ring 16; that is, when the detection personnel pulls the pull line 12 outward, the driving gear 10 rotates forward to drive the input shaft of the generator 8 to rotate to charge the storage battery 6, when the detection personnel releases the outer end of the pull line 12, the energy of the coil spring 13 is released to drive the driving shaft 15 to rotate to wind the pull line 12, so that the outer end of the pull line 12 returns to the initial position, and the driving gear 10 connected with the driving shaft 15 reversely rotates, and no longer drives the input shaft of the generator 8 to reversely rotate;

[0045] In order to make the gas detector can provide illumination for staff in the absence of light conditions; in the embodiment, the lower shell 2 upper end is provided with lighting mechanism, the lighting mechanism is connected with the lower battery 6 through the wire; the lighting mechanism includes the lamp shell 21 fixed with the lower shell 2 upper end, the lamp shell 21 upper end opening, and the inner chamber bottom end is provided with V-shaped light cup 22, the light cup 22 inner chamber is provided with LED lamp bead 23, the LED lamp bead 23 lower end is connected with one end of the wire, the other end of the wire is connected with the positive and negative poles of the battery 6, the lamp shell 21 opening is also provided with optical glass 24, the optical glass 24 is used for light transmission and plays a protective role for the LED lamp bead 23 below the optical glass 24.

Claims

1. A gas detector, characterized by: The upper shell with a rear end opening and the lower shell with a front end opening are correspondingly arranged to form a containing inner cavity, the circuit board is arranged at the rear part of the containing inner cavity, the gas detection module is arranged on the front surface of the circuit board, the gas detection module horizontally penetrates the front wall of the upper shell, and the front end of the gas detection module is in contact with the external space; the rear end of the gas detection module is connected with the circuit board, the circuit board is provided with power by the power supply system arranged at the rear end; the power supply system comprises a storage battery arranged at the rear side of the circuit board and connected with the circuit board and an electric energy conversion mechanism connected with the storage battery, the storage battery provides power for the circuit board by converting chemical energy into electric energy, and the electric energy conversion mechanism is used for converting light energy, mechanical energy and external electric energy into chemical energy and storing the chemical energy in the storage battery; the front surface of the upper shell is further provided with a signal display unit connected with the circuit board, and the signal display unit is used for displaying a signal when the gas detection module detects a set gas concentration.

2. The gas detection instrument of claim 1, wherein: The electric energy conversion mechanism comprises a current conversion chip arranged at the lower side of the circuit board, the current conversion chip is connected with the circuit board at the upper part and connected with a charging port at the lower part, and the charging port is vertically arranged and penetrates the bottom wall of the lower shell.

3. The gas detection instrument of claim 1, wherein: The electric energy conversion mechanism further comprises a solar charging plate arranged on the outer surface of the rear end of the lower shell, and the solar charging plate is connected with the storage battery at the inner end.

4. The gas detection instrument of claim 1, wherein: The electric energy conversion mechanism further comprises a generator arranged at the upper part of the containing inner cavity, the generator is arranged at the front and rear parts and the output end at the rear side is connected with the storage battery, and the input shaft at the front side of the generator is connected with a mechanical driving part, the mechanical driving part is used for manual driving of the staff, the input shaft of the generator is rotated, mechanical energy is converted into chemical energy, and the chemical energy is stored in the storage battery.

5. The gas detection instrument of claim 4, wherein: The mechanical driving part comprises a driven gear connected with the input shaft at the front part of the generator, the driven gear is engaged with a driving gear at the lower side, the driving gear is coaxially sleeved with a driving shaft arranged horizontally at the front and rear parts, the driving gear is fixedly connected with the front end of the driving shaft, and the rear end of the driving shaft is rotationally connected with the lower shell; in order to facilitate the staff to manually drive the driving gear to rotate, the rear end of the driving gear is further provided with a pull wire type driving structure, and the pull wire type driving structure can drive the driving gear to rotate through the hand pulling force of the staff.

6. The gas detection instrument of claim 5, wherein: The pull wire type driving structure comprises a pull wire containing groove coaxially arranged along the driving shaft, the pull wire containing groove is fixedly connected with the inner end of the pull wire at the bottom, and the pull wire has a set length and flexibility.

7. The gas detection instrument of claim 6, wherein: The pull wire type driving structure further comprises a coil spring coaxially arranged at the rear part of the driving shaft, the coil spring is sleeved with a coil spring mounting seat, the rear end of the coil spring mounting seat is fixedly connected with the inner end surface of the lower shell, the inner end of the coil spring is fixedly connected with the periphery of the driving shaft, and the outer end of the coil spring is fixedly connected with the periphery of the inner cavity of the coil spring mounting seat.

8. The gas detection instrument of claim 5, wherein: An inertia ratchet wheel is coaxially arranged between the driven gear and the input shaft of the generator; the inner side of the front end of the inertia ratchet wheel is connected with the driven gear, and the rear end is connected with the input shaft of the generator.

9. The gas detection instrument of claim 8, wherein: The inertial ratchet comprises a gear ring connected with the input shaft of the generator, the gear ring is a cylinder with an open front end, the inner cavity of the gear ring is circumferentially distributed with ratchet teeth, the rear end of the gear ring is fixed with the input shaft of the generator, the inner cavity of the gear ring is provided with a pawl mounting seat, the pawl mounting seat is rhombic, support shafts are arranged through the geometric center of the pawl mounting seat in front and back directions, the front ends of the support shafts are coaxially fixed with the driven gear, the middle parts of the support shafts are fixedly arranged with the pawl mounting seat, and the rear ends of the support shafts are rotationally connected with the bottom end of the gear ring; one end of the pawl mounting seat is horizontally provided with a mounting shaft in front and back directions, the mounting shaft is fixed with the front end surface of the pawl mounting seat, the mounting shaft is externally provided with a pawl and rotationally connected with the pawl, the outer end of the pawl is correspondingly arranged with the ratchet teeth, and the pawl and the opposite diagonal lines of the pawl mounting seat in the vertical direction are arranged at a set angle.

10. The gas detection instrument of claim 1, wherein: The lower shell upper end is further provided with an illumination mechanism, which is connected with the lower battery through a wire; the illumination mechanism comprises a lamp shell fixed with the lower shell upper end, the lamp shell upper end is open, and the inner cavity bottom end is provided with a V-shaped reflecting cup, the reflecting cup inner cavity is provided with an LED lamp bead, the LED lamp bead lower end is connected with one end of the wire, the other end of the wire is connected with the positive and negative poles of the battery, and the lamp shell opening is further provided with optical glass, which is used for light transmission and plays a protective role on the LED lamp bead arranged below the optical glass.

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