CN213022091U - Fire extinguisher pressure monitoring device - Google Patents
Fire extinguisher pressure monitoring device Download PDFInfo
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- CN213022091U CN213022091U CN202021588326.8U CN202021588326U CN213022091U CN 213022091 U CN213022091 U CN 213022091U CN 202021588326 U CN202021588326 U CN 202021588326U CN 213022091 U CN213022091 U CN 213022091U
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Abstract
A pressure monitoring device of a fire extinguisher comprises a pressure acquisition device, a pressure measurement circuit and a single chip microcomputer, wherein an adjustable capacitor is connected with the pressure acquisition device, so that the sensitivity and the accuracy of the pressure measurement circuit are improved; meanwhile, the pressure monitoring function of the fire extinguisher can be realized only by one pressure measuring circuit with an adjustable capacitor and one single chip microcomputer, the structure is simple, the cost is low, and the fire extinguisher pressure monitoring device is suitable for popularization and application.
Description
Technical Field
The utility model belongs to fire extinguisher pressure monitoring field, concretely relates to fire extinguisher pressure monitoring device.
Background
The fire extinguisher is the fire-fighting equipment necessary for residential buildings and office buildings. The common fire extinguishers mainly comprise: foam fire extinguisher, dry powder fire extinguisher, CO2Fire extinguishers and water-based extinguishers. Among the above mentioned fire extinguishers, CO is removed2The pressure gauge is equipped outside the fire extinguisher for indicatingWhether the pressure inside the fire extinguisher is normal or not, and when the pressure of the fire extinguisher is insufficient, the contents can not be sprayed normally; when the pressure is too high, there is a risk of explosion.
The pressure detection means of the existing common fire extinguisher mainly takes manual inspection as a main part, and determines whether the pressure of the fire extinguisher is normal or not by directly observing a pressure dial plate of the fire extinguisher and observing a bottle body, thereby consuming time and labor; the method can eliminate certain environmental factors, but the cost of the camera is high; there is a technique of installing a pressure sensor in a pressure gauge, indicating pressure change of a fire extinguisher by measuring displacement change of a bourdon tube, directly monitoring the displacement, and having relatively low sensitivity.
In conclusion, it is necessary to provide a pressure monitoring device for fire extinguishers, which can monitor the pressure condition of fire extinguishers in real time and has high sensitivity and low cost.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a fire extinguisher pressure monitoring device can realize the real-time supervision of the fire extinguisher pressure condition, has high sensitivity and low cost.
The utility model discloses realize that the technical scheme that above-mentioned purpose adopted does:
the pressure measuring circuit is provided with an adjustable capacitor, and a moving plate of the adjustable capacitor is connected with the pressure acquiring device through a rotating screw.
Further, the shape of a screw groove on the surface of the rotor plate rotating screw is matched with the shape of a connecting end of the pressure acquisition device connected with the rotor plate rotating screw;
when the pressure obtaining device obtains the pressure change of the fire extinguisher, the pressure obtaining device drives the movable piece of the adjustable capacitor to rotate, the pressure measuring circuit measures the capacitance change of the adjustable capacitor and transmits the capacitance change to the single chip microcomputer, and the single chip microcomputer receives the capacitance change information, converts the capacitance change information into the pressure change information of the fire extinguisher and transmits the pressure change information of the fire extinguisher to the background management system through the communication interface.
Furthermore, the screw groove on the surface of the rotating screw of the moving plate is in a shape of a concave straight line, a cross or a plum blossom.
Furthermore, the shape of the connecting end of the pressure acquisition device connected with the rotating screw of the moving plate is a convex straight line, a cross shape or a plum blossom shape.
Further, the pressure acquisition device comprises a shell, an air inlet base, a pressure sensitive element, a transmission mechanism, a fixed clamp plate, a pointer and a dial;
the air inlet base is connected with the pressure sensing element and used for acquiring the pressure of the fire extinguisher and transmitting the pressure to the pressure sensing element;
the pressure sensitive element is connected with the transmission mechanism and drives the transmission mechanism to move when being pressed;
the transmission mechanism comprises a connecting rod, a sector gear and a pinion shaft which are sequentially connected, one end of the pinion shaft is connected with the pointer, when the transmission mechanism receives the pressure change of the pressure sensitive element, the connecting rod connected with the pressure sensitive element displaces to drive the sector gear and the pinion shaft to rotate, the pinion shaft drives the pointer to deflect, and the pressure change of the fire extinguisher is indicated on the dial disc;
the fixed splint is an upper splint and a lower splint which are arranged in parallel and have the same shape, size and material, and the lower splint is fixedly connected with the air inlet base;
a support column is arranged on the lower clamping plate, a through hole corresponding to the support column on the lower clamping plate in position and size is arranged on the upper clamping plate, and the upper clamping plate and the lower clamping plate are fixedly connected through the support column and the through hole; the middle parts of the upper clamping plate and the lower clamping plate are also provided with small holes with corresponding positions and sizes, and the upper clamping plate and the lower clamping plate are movably connected with the pinion shaft through the small holes;
the part of the pinion shaft protruding out of the upper surface of the upper clamping plate is connected with the pointer; the dial is fixedly connected between the upper surface of the upper clamping plate and the pointer;
the air inlet base, the pressure sensitive element, the transmission mechanism, the fixed clamping plate, the pointer and the dial are arranged inside the shell.
Further, the part of the pinion shaft protruding out of the lower surface of the lower clamping plate is connected with a movable plate rotating screw of the adjustable capacitor.
Further, the pressure measuring circuit and the single chip microcomputer are installed between the lower clamping plate and the air inlet base.
Further, the pressure sensitive element is selected from any one of a C-type Bourdon tube and a spiral Bourdon tube.
The utility model also discloses a fire extinguisher, including above-mentioned arbitrary fire extinguisher pressure monitoring devices.
Compared with the prior art, the technical scheme has the advantages that the adjustable capacitor moving plate rotating screw is connected with the pressure acquisition device, so that the sensitivity and the accuracy of the pressure measurement circuit are improved; meanwhile, the pressure monitoring function of the fire extinguisher can be realized only by one pressure measuring circuit with an adjustable capacitor and one single chip microcomputer, the structure is simple, the cost is low, and the fire extinguisher pressure monitoring device is suitable for popularization and application.
Drawings
FIG. 1 is a pressure acquisition apparatus described in example 1;
FIG. 2 is a top view of the tunable capacitor described in example 1;
FIG. 3 is a side view of a pinion shaft in the pressure obtaining apparatus according to embodiment 1;
fig. 4 is an enlarged perspective view of a pinion shaft and an adjustable capacitor connection terminal B in the pressure obtaining apparatus described in embodiment 1;
FIG. 5 is a top view of the tunable capacitor described in example 2;
FIG. 6 is a side view of a pinion shaft in the pressure obtaining apparatus according to embodiment 2;
fig. 7 is an enlarged perspective view of the pinion shaft and the adjustable capacitor connection terminal B in the pressure acquisition apparatus described in embodiment 2.
1-an air inlet base; 2-a pressure sensitive element; 3-a connecting rod; 4-sector gear; 5, an upper splint; 6-upper splint through hole; 7-a pointer; 8-dial scale; 9-a housing; a-the connection end of the pinion shaft and the pointer; and the B-pinion shaft is connected with the adjustable capacitor.
Detailed Description
The technical solutions of the present invention will be further described below with reference to specific embodiments to help those skilled in the art understand the technical solutions of the present invention.
Example 1
Embodiment 1 provides a fire extinguisher pressure monitoring device, including pressure acquisition device, pressure measurement circuit and singlechip, wherein, pressure measurement circuit is equipped with an adjustable capacitor.
The pressure acquisition device includes: the device comprises a shell, an air inlet base, a pressure sensitive element, a transmission mechanism, a fixed clamp plate, a pointer and a dial; the air inlet base is connected with the pressure sensing element and used for acquiring the pressure of the fire extinguisher and transmitting the pressure to the pressure sensing element; the pressure sensitive element is a C-shaped Bourdon tube; the movable end of the C-shaped Bourdon tube is connected with the transmission mechanism and drives the transmission mechanism to move when being pressed; the transmission mechanism comprises a connecting rod, a sector gear and a pinion shaft which are sequentially connected, one end of the pinion shaft is connected with the pointer, when the transmission mechanism receives the pressure change of the pressure sensitive element, the connecting rod connected with the pressure sensitive element displaces to drive the sector gear and the pinion shaft to rotate, the pinion shaft drives the pointer to deflect, and the pressure change of the fire extinguisher is indicated on the dial disc; the fixed splint is an upper splint and a lower splint which are arranged in parallel and have the same shape, size and material, and the lower splint is fixedly connected with the air inlet base; a support column is arranged on the lower clamping plate, a through hole corresponding to the support column of the lower clamping plate in position and size is arranged on the upper clamping plate, and the upper clamping plate and the lower clamping plate are fixedly connected through the support column and the through hole; the middle parts of the upper clamping plate and the lower clamping plate are also provided with small holes with corresponding positions and sizes, and the upper clamping plate and the lower clamping plate are movably connected with the pinion shaft through the small holes; the part of the pinion shaft protruding out of the upper surface of the upper clamping plate is connected with the pointer; the dial is fixedly connected between the upper surface of the upper clamping plate and the pointer, and the air inlet base, the pressure sensitive element, the transmission mechanism, the fixed clamping plate, the pointer and the dial are installed inside the shell, as shown in the attached drawing 1.
The screw groove on the surface of the rotating screw of the moving plate of the adjustable capacitor in the pressure measuring circuit is in a concave cross shape, and is shown in the attached figure 2.
The pinion shaft in the pressure acquisition device is shown in the figure 3; the shape of one end of the pinion shaft connected with the rotor plate rotating screw of the adjustable capacitor is a convex cross shape, and fig. 4 is an enlarged schematic view of the connection end of the pinion shaft and the rotor plate rotating screw of the adjustable capacitor.
The pinion shaft is connected with the cross-shaped screw groove which is concave on the surface of the rotating screw of the moving plate of the adjustable capacitor in an adaptive manner through the cross-shaped bulge protruding from the tail end.
When the pressure of the fire extinguisher conducted by the air inlet base of the pressure acquisition device changes, the C-shaped Bourdon tube connected with the air inlet base is pressed to expand, and the movable end of the C-shaped Bourdon tube connected with the transmission mechanism generates displacement to drive the connecting rod; the connecting rod pulls the sector gear to rotate; the sector gear drives the pinion shaft meshed with the sector gear to rotate; one end of the pinion shaft is connected with a pointer; the pointer rotates along with the rotation of the pinion shaft, and pressure change is displayed on the dial disc; meanwhile, the movable plate rotating screw of the adjustable capacitor connected with the opposite end of the connection between the pinion shaft and the pointer also rotates along with the rotation of the pinion shaft, so that the capacitance of the adjustable capacitor changes; the pressure measurement circuit detects the capacitance change of the adjustable capacitor and transmits the change to the singlechip through the communication interface; the single chip microcomputer processes the capacitance change signal into fire extinguisher pressure data, the pressure data are transmitted to a background management system through a wireless network or an NB-IOT network, and the real-time pressure condition of the fire extinguisher is displayed on a background management page.
Example 2
The pressure acquisition device includes: the device comprises a shell, an air inlet base, a pressure sensitive element, a transmission mechanism, a fixed clamp plate, a pointer and a dial; the air inlet base is connected with the pressure sensing element and used for acquiring the pressure of the fire extinguisher and transmitting the pressure to the pressure sensing element; the pressure sensitive element is a spiral Bourdon tube; the movable end of the spiral Bourdon tube is connected with the transmission mechanism and drives the transmission mechanism to move when being pressed; the transmission mechanism comprises a connecting rod, a sector gear and a pinion shaft which are sequentially connected, one end of the pinion shaft is connected with the pointer, when the transmission mechanism receives the pressure change of the spiral Bourdon tube, the connecting rod connected with the spiral Bourdon tube displaces to drive the sector gear and the pinion shaft to rotate, the pinion shaft drives the pointer to deflect, and the pressure change of the fire extinguisher is indicated on the dial disc; the fixed splint is an upper splint and a lower splint which are arranged in parallel and have the same shape, size and material, and the lower splint is fixedly connected with the air inlet base; a support column is arranged on the lower clamping plate, a through hole corresponding to the support column of the lower clamping plate in position and size is arranged on the upper clamping plate, and the upper clamping plate and the lower clamping plate are fixedly connected through the support column and the through hole; the middle parts of the upper clamping plate and the lower clamping plate are also provided with small holes with corresponding positions and sizes, and the upper clamping plate and the lower clamping plate are movably connected with the pinion shaft through the small holes; the part of the pinion shaft protruding out of the upper surface of the upper clamping plate is connected with the pointer; the dial is fixedly connected between the upper surface of the upper clamping plate and the pointer, and the air inlet base, the pressure sensitive element, the transmission mechanism, the fixed clamping plate, the pointer and the dial are installed inside the shell, as shown in the attached drawing 1.
The screw groove on the surface of the rotating screw of the movable plate of the adjustable capacitor in the pressure measurement circuit is a concave straight line, as shown in the attached figure 5.
The pinion shaft in the pressure acquisition device is shown in figure 6; the shape of one end of the pinion shaft connected with the movable plate rotating screw of the adjustable capacitor is a convex straight line, and fig. 7 is an enlarged schematic view of the connection end of the pinion shaft and the movable plate rotating screw of the adjustable capacitor.
The pinion shaft is connected with a concave linear screw groove in the surface of a rotating screw of a moving plate of the adjustable capacitor in an adaptive manner through a linear bulge protruding from the tail end.
When the pressure of the fire extinguisher conducted by the air inlet base of the pressure acquisition device changes, the spiral Bourdon tube connected with the air inlet base is expanded under pressure; at the moment, the movable end of the spiral Bourdon tube connected with the transmission mechanism generates displacement to drive the connecting rod; the connecting rod pulls the sector gear to rotate; the sector gear drives the pinion shaft meshed with the sector gear to rotate; a pointer connected with one end of the pinion shaft rotates along with the rotation of the pinion shaft, and pressure change is displayed on the dial disc; meanwhile, a movable plate rotating screw of the adjustable capacitor connected with the tail end of the pinion shaft also rotates along with the rotation of the pinion shaft, so that the capacitance of the adjustable capacitor changes; the pressure measurement circuit detects the capacitance change of the adjustable capacitor and transmits the change to the singlechip through the communication interface; the single chip microcomputer processes the capacitance change signal into fire extinguisher pressure data, the pressure data are transmitted to a background management system through a wireless network or an NB-IOT network, and the real-time pressure condition of the fire extinguisher is displayed on a background management page.
The above embodiments are only used for explaining the technical solution of the present invention, and can not be used as the limitation of the protection scope of the present invention. It should be understood by those skilled in the art that any non-inventive substitutions and modifications made on the basis of the present invention are within the scope of the present invention.
Claims (9)
1. The pressure monitoring device for the fire extinguisher is characterized by comprising a pressure acquisition device, a pressure measurement circuit and a single chip microcomputer, wherein the pressure measurement circuit is provided with an adjustable capacitor, and a moving plate of the adjustable capacitor is connected with the pressure acquisition device through a rotating screw.
2. The fire extinguisher pressure monitoring device according to claim 1, wherein the shape of the screw groove on the surface of the rotor rotation screw is adapted to the shape of the connection end of the pressure acquisition device connected with the rotor rotation screw.
3. The fire extinguisher pressure monitoring device according to claim 2, wherein the screw groove shape of the surface of the rotating screw of the moving plate is a recessed in-line shape, a cross shape, a quincunx shape.
4. The fire extinguisher pressure monitoring device according to claim 2, wherein the shape of the connection end of the pressure acquisition device connected with the movable plate rotating screw is a convex straight line, a cross, a quincunx.
5. The fire extinguisher pressure monitoring device according to claim 1, wherein said pressure acquisition device comprises a housing, an air intake base, a pressure sensitive element, a transmission mechanism, a fixed clamp plate, a pointer and a dial;
the air inlet base is connected with the pressure sensitive element;
the pressure sensitive element is connected with the transmission mechanism;
the transmission mechanism comprises a connecting rod, a sector gear and a pinion shaft which are connected in sequence;
the fixed splint is an upper splint and a lower splint which are arranged in parallel and have the same shape, size and material, and the lower splint is fixedly connected with the air inlet base;
a support column is arranged on the lower clamping plate, a through hole corresponding to the support column on the lower clamping plate in position and size is arranged on the upper clamping plate, and the upper clamping plate and the lower clamping plate are fixedly connected through the support column and the through hole; the middle parts of the upper clamping plate and the lower clamping plate are also provided with small holes with corresponding positions and sizes, and the upper clamping plate and the lower clamping plate are movably connected with the pinion shaft through the small holes;
the part of the pinion shaft protruding out of the upper surface of the upper clamping plate is connected with the pointer; the dial is fixedly connected between the upper surface of the upper clamping plate and the pointer;
the air inlet base, the pressure sensitive element, the transmission mechanism, the fixed clamping plate, the pointer and the dial are arranged inside the shell.
6. The fire extinguisher pressure monitoring device according to claim 5, wherein the portion of the pinion shaft protruding from the lower surface of the lower clamp plate is connected with a moving plate rotating screw of the adjustable capacitor.
7. The fire extinguisher pressure monitoring device of claim 6, wherein the pressure measurement circuit and the single chip microcomputer are installed between the lower clamp plate and the air intake base.
8. The fire extinguisher pressure monitoring device according to claim 5, wherein the pressure sensitive element is selected from any one of a C-type Bourdon tube and a helical Bourdon tube.
9. A fire extinguisher including a fire extinguisher pressure monitoring apparatus as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021588326.8U CN213022091U (en) | 2020-08-04 | 2020-08-04 | Fire extinguisher pressure monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021588326.8U CN213022091U (en) | 2020-08-04 | 2020-08-04 | Fire extinguisher pressure monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213022091U true CN213022091U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021588326.8U Active CN213022091U (en) | 2020-08-04 | 2020-08-04 | Fire extinguisher pressure monitoring device |
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| Country | Link |
|---|---|
| CN (1) | CN213022091U (en) |
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2020
- 2020-08-04 CN CN202021588326.8U patent/CN213022091U/en active Active
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