CN215065031U - Fire extinguisher pressure gauge calibration equipment - Google Patents
Fire extinguisher pressure gauge calibration equipment Download PDFInfo
- Publication number
- CN215065031U CN215065031U CN202121223973.3U CN202121223973U CN215065031U CN 215065031 U CN215065031 U CN 215065031U CN 202121223973 U CN202121223973 U CN 202121223973U CN 215065031 U CN215065031 U CN 215065031U
- Authority
- CN
- China
- Prior art keywords
- pressure
- valve
- pressure gauge
- working
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a fire extinguisher pressure gauge calibration equipment, it includes: air supply bottle and work box. The gas supply bottle is used for supplying high-pressure gas, the outlet of the gas supply bottle is connected with a pressure reducing valve, the working box is provided with a gas inlet valve, a gas outlet valve and a comparison pressure gauge, and the gas inlet valve is connected with the pressure reducing valve; the working box is internally provided with a working pipeline, the working pipeline is connected with an air inlet valve, an exhaust valve, a pressure comparison meter and a pressure meter to be calibrated, and the working pipeline is connected with a pressure sensor and a safety valve. When the pressure gauge is used, the pressure gauge to be calibrated is arranged in a working position, and the pressure reducing valve and the air inlet valve are opened; the pressure sensor can accurately detect the pressure in the working pipeline and control the air inlet valve to be closed, so that the problems of high labor intensity and low calibration precision in manual operation are solved; the staff compares the values of the comparison pressure gauge and the pressure gauge to be calibrated and judges whether the pressure gauge to be calibrated is qualified or not; the safety valve can ensure that the pressure in the working pipeline is in a safe range by matching with the pressure sensor.
Description
Technical Field
The utility model relates to a calibration equipment, concretely relates to fire extinguisher pressure gauge calibration equipment.
Background
The pressure gauge is the only means of accurate demonstration fire extinguisher bottle internal pressure, if the pressure that the pressure gauge shows is inaccurate, will influence the quality, the safety and the use of fire extinguisher, therefore the manometer of fire extinguisher must calibrate the back of being qualified and just can come into operation.
The manometer calibration equipment of present fire extinguisher mainly relies on workman's manual operation, when needing the calibration, the workman will wait to calibrate the manometer and install on the station, open reducing valve and admission valve, gaseous from the gas cylinder entering working line, close the admission valve when comparison manometer numerical value reachs the predetermined value, observe and wait to calibrate manometer numerical value and contrast with comparison manometer numerical value, open discharge valve exhaust gas after waiting to calibrate the manometer calibration and accomplish, take off and wait to calibrate the manometer. The device has certain defects, the set value of the pressure reducing valve is larger than the preset value of the comparison pressure gauge value, so that workers need to pay high attention to the comparison pressure gauge value and close the air inlet valve in time in the whole process, on one hand, the labor intensity of the workers is high, on the other hand, human errors are introduced, and the calibration precision is reduced. In addition, because the set value of the pressure reducing valve is larger than the preset value of the comparison pressure gauge, the pressure in the working pipeline is possibly too high due to misoperation of workers in actual work, so that equipment is damaged, and the safety of the workers is threatened.
SUMMERY OF THE UTILITY MODEL
The utility model provides a calibration device for a pressure gauge of a fire extinguisher, which is characterized in that a pressure sensor is arranged on a working pipeline, and an air inlet valve is closed when the pressure in the working pipeline reaches a set value, thereby avoiding the problems of high labor intensity and low calibration precision existing in manual operation; the safety valve is arranged on the working pipeline, and the potential safety hazard caused by overhigh pressure in the working pipeline is eliminated by matching with the pressure sensor.
The technical scheme of the utility model is that:
a fire extinguisher pressure gauge calibration apparatus comprising:
the gas supply bottle is used for supplying high-pressure gas, and the outlet of the gas supply bottle is connected with a pressure reducing valve;
one side of the working box is provided with an air inlet valve which is connected with a pressure reducing valve;
the working pipeline is connected with the air inlet valve, at least 2 branch pipelines are connected to the working pipeline, one branch pipeline is connected with a comparison pressure gauge, and the rest branch pipelines are used for connecting the pressure gauge to be calibrated; the working pipeline is connected with a pressure sensor, and the air inlet valve is closed when the pressure in the working pipeline reaches a set value; the working pipeline is connected with a safety valve; one end of the working pipeline is closed, and the other end of the working pipeline is connected with an exhaust valve; the working pipeline is arranged in the working box, and the comparison pressure gauge and the exhaust valve are arranged on the working box.
The fire extinguisher pressure gauge calibration equipment of this scheme will treat during the use that calibration pressure gauge and surplus branch pipe are connected, opens pressure reducing valve and admission valve, and pressure gas gets into working line from the gas supply bottle, and then reachs and treats calibration pressure gauge and reference pressure gauge. The pressure sensor is connected to the working pipeline, pressure in the working pipeline can be accurately detected, the air inlet valve is controlled to be closed when the pressure sensor detects that pressure in the working pipeline reaches a set value, and the problems of high labor intensity and low calibration precision in manual operation are solved. And the staff observes the display value of the pressure gauge to be calibrated and compares the display value with the display value of the comparison pressure gauge, and whether the pressure gauge to be calibrated is qualified is judged. And opening an exhaust valve to exhaust gas after the calibration of the pressure gauge to be calibrated is completed, and taking down the pressure gauge to be calibrated.
The fire extinguisher pressure gauge calibration equipment of this scheme has connect the relief valve on the working pipeline, and when the working pipeline internal pressure was greater than the relief valve threshold value, the relief valve opened and released unnecessary gas, ensured that the working pipeline internal pressure is in safety range, and the potential safety hazard because of too high and producing of working pipeline internal pressure has been eliminated to cooperation pressure sensor.
Preferably, the pressure reducing valve is opened when the intake valve is opened, and is closed when the intake valve is closed. When the pressure reducing valve is opened, the air inlet valve is opened, and when the air inlet valve is closed, the pressure reducing valve is closed, so that the gas guided out from the gas supply bottle is prevented from being retained in a pipeline between the air inlet valve and the gas supply bottle, and the potential safety hazard caused by overlarge pressure in the pipeline is eliminated.
Preferably, the residual branch pipeline is connected with a connecting seat, the connecting seat is provided with a threaded hole, and the connecting seat is used for installing a pressure gauge to be calibrated. The pressure gauge to be calibrated is connected with the connecting seat through threads, the threads are connected simply and reliably, the connecting seat is arranged, the pressure gauge to be calibrated is conveniently connected with the branch pipeline, and operation is simplified.
Preferably, a sealing ring is arranged between the connecting seat and the pressure gauge to be calibrated. The sealing washer can ensure to wait to calibrate the leakproofness of being connected between manometer and connecting seat, ensures to wait to calibrate the calibration precision of manometer.
Preferably, the pressure set value of the pressure reducing valve is 1.2-2 times of the pressure set value in the working pipeline. The larger the pressure set value of the pressure reducing valve is, the faster the pressure in the working pipeline can reach the set value, and the shorter the single calibration time is; however, since the pressure load of the corresponding line increases as the pressure set value of the pressure reducing valve increases, the pressure set value of the pressure reducing valve should be set to an appropriate value according to the pressure set value of the working line.
Preferably, the pressure threshold value of the safety valve is 1.05-1.15 times of the pressure set value in the working pipeline. The lower the pressure threshold value of the safety valve is, the better the protection effect on the working pipeline is, but the pressure threshold value of the safety valve cannot be too low, so that the over-reaction of the safety valve caused by pressure fluctuation in the working pipeline is avoided, and the pressure threshold value of the safety valve needs to be an appropriate value according to a pressure set value in the working pipeline.
Preferably, the working pipe is made of stainless steel. The stainless steel material has high strength, good processing performance and lower cost, can adapt to a humid environment, and is suitable for manufacturing working pipelines.
The utility model has the advantages that: the air inlet valve is controlled to be closed by arranging the pressure sensor, so that the problems of high labor intensity and low calibration precision in manual operation are solved; the safety valve is arranged, and the potential safety hazard caused by overhigh pressure in the working pipeline is eliminated by matching with the pressure sensor.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is another schematic view of the present invention, which shows a schematic view of the pipeline inside the work box.
In the figure:
an air supply bottle 1;
a pressure reducing valve 2;
a work box 3;
an intake valve 4;
a working pipe 5;
a branch pipe 6;
comparing with a pressure gauge 7;
a pressure sensor 8;
a safety valve 9;
an exhaust valve 10;
a connecting base 11.
Detailed Description
To make the objects, technical solutions and advantages of embodiments of the present invention clearer, the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present solution, and are not construed as limiting the present solution.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "a plurality" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as fixed or removable connections or integral parts, either mechanically or electrically, or in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The first embodiment is as follows: as shown in fig. 1 and 2, a calibration apparatus for a pressure gauge of a fire extinguisher, includes:
the gas supply bottle 1 is used for supplying high-pressure gas, and the outlet of the gas supply bottle 1 is connected with a pressure reducing valve 2;
the working box 3, one side of the working box 3 is provided with an air inlet valve 4, and the air inlet valve 4 is connected with the pressure reducing valve 2;
the working pipeline 5 is connected with the air inlet valve 4, at least 2 branch pipelines 6 are connected to the working pipeline 5, one branch pipeline 6 is connected with a comparison pressure gauge 7, and the rest branch pipelines 6 are used for connecting the pressure gauge to be calibrated; the working pipeline 5 is connected with a pressure sensor 8, and the air inlet valve 4 is closed when the pressure in the working pipeline 5 reaches a set value; the working pipeline 5 is connected with a safety valve 9; one end of the working pipeline 5 is closed, and the other end is connected with an exhaust valve 10; the working pipeline 5 is arranged in the working box 3, and the comparison pressure gauge 7 and the exhaust valve 10 are arranged on the working box 3.
The fire extinguisher pressure gauge calibration equipment of this embodiment will wait to calibrate the manometer and be connected with remaining branch pipeline 6 during the use, opens pressure reducing valve 2 and admission valve 4, and pressure gas gets into working line 5 from gas cylinder 1, and then reaches and waits to calibrate manometer and comparison manometer 7. Connect pressure sensor 8 on the working conduit 5, can the accurate pressure that detects in the working conduit 5, control admission valve 4 and close when pressure sensor 8 detects that the pressure reaches the setting value in the working conduit 5, pressure sensor 8 can rotate admission valve 4 through circuit control motor, perhaps admission valve 4 is the solenoid valve, and pressure sensor 8 passes through the work of circuit control solenoid valve. The problems of high labor intensity and low calibration precision in manual operation are solved. And the staff observes the display value of the pressure gauge to be calibrated and compares the display value with the display value of the comparison pressure gauge 7 to judge whether the pressure gauge to be calibrated is qualified. And opening the exhaust valve 10 to exhaust gas after the calibration of the pressure gauge to be calibrated is completed, and taking down the pressure gauge to be calibrated.
The fire extinguisher pressure gauge calibration equipment of this embodiment, it has relief valve 9 to connect on the working pipeline 5, and when 5 internal pressures of working pipeline were greater than the 9 threshold values of relief valve, relief valve 9 opened and released unnecessary gas, ensured that 5 internal pressures of working pipeline are in safety range, and cooperation pressure sensor 8 has eliminated the potential safety hazard because of 5 internal pressures of working pipeline too high and produce.
Further, the pressure reducing valve 2 is opened while the intake valve 4 is opened, and the pressure reducing valve 2 is closed while the intake valve 4 is closed. The opening signal of the pressure reducing valve 2 and the closing signal of the intake valve 4 can be processed by the circuit respectively to achieve the control purpose, and the unified opening and closing signals can be output to the pressure reducing valve 2 and the intake valve 4 by the circuit. When the pressure reducing valve 2 is opened, the air inlet valve 4 is opened, and when the air inlet valve 4 is closed, the pressure reducing valve 2 is closed, so that the gas led out from the gas supply bottle 1 is prevented from being retained in a pipeline between the air inlet valve 4 and the gas supply bottle 1, and the potential safety hazard caused by overlarge pressure in the pipeline is eliminated.
Furthermore, a connecting seat 11 is connected to the residual branch pipe 6, a threaded hole is formed in the connecting seat 11, and the connecting seat 11 is used for installing a pressure gauge to be calibrated. The pressure gauge to be calibrated is connected with the connecting seat 11 through threads, the threads are connected simply and reliably, the connecting seat 11 is arranged, the pressure gauge to be calibrated is conveniently connected with the branch pipeline 6, and operation is simplified.
Further, a sealing ring is arranged between the connecting seat 11 and the pressure gauge to be calibrated. The leakproofness of being connected between manometer of waiting to calibrate and connecting seat 11 can be ensured to the sealing washer, ensures the calibration precision of manometer of waiting to calibrate.
Further, the pressure set value of the pressure reducing valve 2 is 1.2-2 times of the pressure set value in the working pipeline 5. The larger the pressure set value of the pressure reducing valve 2 is, the faster the pressure in the working pipeline 5 can reach the set value, and the shorter the single calibration time is; however, since the pressure load of the corresponding line increases as the pressure set value of the pressure reducing valve 2 increases, the pressure set value of the pressure reducing valve 2 should be set to an appropriate value in accordance with the pressure set value in the working line 5.
Further, the pressure threshold value of the safety valve 9 is 1.05-1.15 times of the pressure set value in the working pipeline 5. The lower the pressure threshold of the safety valve 9 is, the better the protection effect on the working pipeline 5 is, but the pressure threshold of the safety valve 9 cannot be too low, so that the over reaction of the safety valve 9 caused by the pressure fluctuation in the working pipeline 5 is avoided, and therefore the pressure threshold of the safety valve 9 needs to be an appropriate value according to the pressure set value in the working pipeline 5.
Further, the working pipe 5 is made of stainless steel. The stainless steel material has high strength, good processing performance and lower cost, can adapt to a humid environment, and is suitable for manufacturing the working pipeline 5.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.
Claims (7)
1. The utility model provides a fire extinguisher pressure gauge calibration equipment, characterized by includes:
the gas supply bottle (1), the gas supply bottle (1) is used for providing high-pressure gas, the outlet of the gas supply bottle (1) is connected with a pressure reducing valve (2);
the air inlet valve (4) is arranged on one side of the working box (3), and the air inlet valve (4) is connected with the pressure reducing valve (2);
the working pipeline (5), the working pipeline (5) is connected with the air inlet valve (4), at least 2 branch pipelines (6) are connected to the working pipeline (5), one branch pipeline (6) is connected with a comparison pressure gauge (7), and the rest branch pipelines (6) are used for connecting the pressure gauge to be calibrated; a pressure sensor (8) is connected to the working pipeline (5), and the air inlet valve (4) is closed when the pressure in the working pipeline (5) reaches a set value; a safety valve (9) is connected on the working pipeline (5); one end of the working pipeline (5) is closed, and the other end is connected with an exhaust valve (10); the working pipeline (5) is arranged in the working box (3), and the comparison pressure gauge (7) and the exhaust valve (10) are arranged on the working box (3).
2. A fire extinguisher pressure gauge calibration device according to claim 1, characterized in that the pressure reducing valve (2) is opened with the inlet valve (4) open, and the pressure reducing valve (2) is closed with the inlet valve (4) closed.
3. A fire extinguisher pressure gauge calibration apparatus according to claim 1, wherein the remaining branch pipe (6) is connected with a connecting seat (11), the connecting seat (11) is provided with a threaded hole, and the connecting seat (11) is used for installing a pressure gauge to be calibrated.
4. A calibration device for the pressure gauge of a fire extinguisher according to claim 3, characterized in that a sealing ring is provided between said connection seat (11) and the pressure gauge to be calibrated.
5. A calibration device for the pressure gauge of a fire extinguisher according to any one of claims 1 to 4, characterized in that the pressure set value of the pressure reducing valve (2) is 1.2-2 times the pressure set value in the working pipe (5).
6. A fire extinguisher pressure gauge calibration apparatus according to any one of claims 1 to 4, characterized in that the pressure threshold of the safety valve (9) is 1.05 to 1.15 times the pressure set value in the working pipe (5).
7. A fire extinguisher pressure gauge calibration device according to any one of claims 1 to 4, characterized in that the working pipe (5) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121223973.3U CN215065031U (en) | 2021-06-02 | 2021-06-02 | Fire extinguisher pressure gauge calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121223973.3U CN215065031U (en) | 2021-06-02 | 2021-06-02 | Fire extinguisher pressure gauge calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215065031U true CN215065031U (en) | 2021-12-07 |
Family
ID=79208398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121223973.3U Active CN215065031U (en) | 2021-06-02 | 2021-06-02 | Fire extinguisher pressure gauge calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215065031U (en) |
-
2021
- 2021-06-02 CN CN202121223973.3U patent/CN215065031U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111089690A (en) | Device and method for testing air tightness of tubular medical instrument | |
| CN205426439U (en) | Valve seal nature detection frock | |
| CN113720555A (en) | Device and method for detecting internal leakage of ball valve of oil and gas pipeline | |
| CN215065031U (en) | Fire extinguisher pressure gauge calibration equipment | |
| CN110726547A (en) | Portable comprehensive checking device for pressure protection device | |
| CN217655461U (en) | Pressure early warning automatic control device | |
| CN110160773A (en) | A kind of pressure relief valve detection device and its detection method | |
| CN208223754U (en) | A kind of detecting tool of inlet manifold leakproofness | |
| CN212039901U (en) | Gas mixing equipment for gas mixing | |
| CN103630302B (en) | A kind of pipe volume pressure differential method tester | |
| CN208651747U (en) | A kind of gas meter valve Hermetical connecting structure | |
| CN213632652U (en) | Testing device for combined pressure regulating valve | |
| CN212903781U (en) | Pneumatic needle valve detection device | |
| CN211626839U (en) | Intelligent flowmeter leakproofness detection device | |
| CN211121956U (en) | Portable comprehensive checking device for pressure protection device | |
| CN201210104Y (en) | Test apparatus for gas regulator | |
| CN219641226U (en) | Butterfly valve detection test bed | |
| CN219694479U (en) | Storage tank pressure test system | |
| CN209707085U (en) | A kind of rupture disk type approval test testboard | |
| CN211925371U (en) | Ammonia tank system | |
| CN218470118U (en) | Simple valve pressure test platform | |
| CN205140180U (en) | Gas examination cover is divided to diffusion formula combustible gas calibrating installation sealed | |
| CN211576496U (en) | Air tightness testing device for tubular medical instrument | |
| CN211234854U (en) | Wire rod plug gas tightness detection device | |
| CN212254504U (en) | Simple wind power motor front end cover air tightness testing tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |