High-efficiency gas alarm calibration device

Abstract

The utility model relates to the technical field of gas alarm calibration, and aims to solve the technical problems of long calibration time and low efficiency. In order to solve the technical problem, the utility model provides the high-efficiency gas alarm calibration device. The device comprises a standard gas bottle, a loading and unloading assembly, a gas transmission guide pipe and a gas distribution tank which are sequentially connected from front to back, the loading and unloading assembly is detachably connected with an outlet of the standard gas bottle; the plurality of calibration components are connected to the gas shunting tank; the calibration assembly comprises a branch pipe, a gas control switch, a calibration cover and a gas alarm; the branch pipes are communicated with the interior of the gas diversion tank; the gas control switch, the calibration cover and the gas alarm are sequentially arranged on the branch pipe from the inside to the outside of the gas distribution tank, and the gas control switch is used for controlling whether the branch pipe is communicated with the gas distribution tank or not. According to the utility model, the calibration efficiency of the gas alarm is improved, the replacement frequency of the standard gas cylinder is reduced, and the calibration accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas alarm calibration technical field especially is a kind of high-efficiency gas alarm calibration device. BACKGROUND

[0002] Gas alarm calibration device is a kind of equipment for verifying carbon monoxide alarm performance, ensure its accuracy and reliability, it has high precision, good stability, easy to operate and the like characteristics.It can simulate different gas concentration and environmental conditions, and the response time, alarm threshold and other parameters of gas alarm are comprehensively detected.

[0003] Prior art has the following problems:

[0004] Carbon monoxide alarm calibration needs each gas alarm calibration device to be calibrated according to standard ventilation, because each standard gas bottle can only realize single pipe single-way ventilation, so only one gas alarm can be calibrated each time, so calibration time is long and efficiency is low each time. UTILITY MODEL CONTENTS

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the above-mentioned problems existing in prior art.

[0006] To solve the above-mentioned technical problems, the utility model provides a kind of high-efficiency gas alarm calibration device, comprising:

[0007] Standard gas bottle, loading and unloading component, gas delivery pipe and gas shunt tank are sequentially connected from front to back;Loading and unloading component is detachably connected with the outlet of standard gas bottle;

[0008] Multiple calibration components are connected on gas shunt tank;Calibration component includes branch pipe, gas control switch, calibration cover and gas alarm;Branch pipe is communicated with the inside of gas shunt tank;From the inside of gas shunt tank to its outside, gas control switch, calibration cover and gas alarm are sequentially arranged on branch pipe, and gas control switch is used to control whether branch pipe is communicated with gas shunt tank.

[0009] In an embodiment of the utility model, the application further includes leak-proof alarm arranged at the connecting position of gas delivery pipe and gas shunt tank.

[0010] In an embodiment of the utility model, loading and unloading component includes detachably connected metal sleeve and sleeve pipe;Metal sleeve is sealingly connected with gas delivery pipe, and sleeve pipe is sealingly connected with standard gas bottle.

[0011] In an embodiment of the utility model, metal sleeve is threadedly connected with sleeve pipe.

[0012] In one embodiment of the utility model, the assembly further comprises a limiting protrusion and a limiting groove; the limiting protrusion is rotatably connected to the outer wall of the sleeve; the limiting groove is arranged on the outer wall of the metal sleeve; and the limiting protrusion is clamped in the limiting groove.

[0013] In one embodiment of the utility model, the limiting protrusion and the limiting groove are magnetically adsorbed and fixed.

[0014] In one embodiment of the utility model, the free end of the limiting protrusion is provided with a protruding part.

[0015] In one embodiment of the utility model, the assembly further comprises a rubber sleeve arranged in the metal sleeve, a first sealing gasket mounted in the metal sleeve, a fixing ring, a second sealing gasket, and a blocking ring mounted in the sleeve; the rubber sleeve is connected to the front end of the fixing ring; the rubber sleeve is inserted into the sleeve, and the rubber sleeve is arranged at the rear end surface of the blocking ring; the first sealing gasket is sleeved on the rubber sleeve, and the first sealing gasket is arranged between the fixing ring and the sleeve; and the second sealing gasket is arranged between the fixing ring and the gas conveying pipe.

[0016] In one embodiment of the utility model, the outer wall of the front end surface of the rubber sleeve is provided with a conical surface.

[0017] In one embodiment of the utility model, the front end of the gas conveying pipe is provided with an anti-dropping ring; the metal sleeve is provided with a mounting groove, and the anti-dropping ring is mounted in the mounting groove.

[0018] The above technical scheme of the utility model has the following advantages compared with the prior art:

[0019] The high-efficiency gas alarm calibrating device has the advantages that the gas shunt tank and the standard gas bottle are detachably connected through the assembly, a plurality of calibrating assemblies are arranged on the gas shunt tank, a gas control switch, a calibrating cover and a gas alarm are arranged on each calibrating assembly, the gas control switch is used to control whether the gas alarm in each calibrating assembly is in communication with the gas shunt tank, so that the calibration of a plurality of gas alarms can be realized at one time, the efficiency of the calibration of the gas alarm is improved, and the replacement frequency of the standard gas bottle is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the content of the utility model more easily understood clearly, the utility model is further described in detail below according to the specific embodiments of the utility model and in combination with the drawings, in which:

[0021] Figure 1 is a structure schematic view of a high-efficiency gas alarm calibrating device in the preferred embodiment of the utility model;

[0022] Figure 2 is Figure 1 the exploded view of the loading and unloading assembly of the high-efficiency gas alarm calibration device of

[0023] Figure 3 is Figure 1 the structural diagram of the metal sleeve of the high-efficiency gas alarm calibration device of

[0024] Figure 4 is Figure 1 the structural diagram of the sleeve of the high-efficiency gas alarm calibration device of

[0025] The description of the drawing of the specification is as follows: 100, standard gas cylinder; 200, loading and unloading assembly; 210, metal sleeve; 220, sleeve; 221, U-shaped block; 230, limiting part; 231, limiting protrusion; 232, limiting groove; 233, protruding part; 240, sealing part; 241, rubber sleeve; 242, first sealing gasket; 243, fixing ring; 244, second sealing gasket; 245, blocking ring;

[0026] 300, gas conveying pipe; 310, anti-dropping ring;

[0027] 400, gas shunt tank;

[0028] 500, calibration assembly; 510, branch pipe; 520, gas control switch; 530, calibration cover; 540, gas alarm;

[0029] 600, output pipeline;

[0030] 700, leak-proof alarm. DETAILED DESCRIPTION

[0031] The utility model will be further explained in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0032] Referring to Figures 1-4 The utility model embodiment provides a kind of high-efficiency gas alarm calibration device, comprising: standard gas cylinder 100, loading and unloading assembly 200, gas conveying pipe 300, gas shunt tank 400 and multiple calibration assemblies 500.

[0033] Standard gas cylinder 100, loading and unloading assembly 200, gas conveying pipe 300 and gas shunt tank 400 are sequentially connected from front to back (front and back refer to gas flow direction);Loading and unloading assembly 200 is detachably connected with the outlet of standard gas cylinder 100;The top of standard gas cylinder 100 is equipped with output pipeline 600, and the end of output pipeline 600 is connected with loading and unloading assembly 200.

[0034] A plurality of calibration assemblies 500 are connected to the gas distribution tank 400; the calibration assembly 500 comprises a branch pipe 510, a gas control switch 520, a calibration cover 530 and a gas alarm 540; the branch pipe 510 is in communication with the inside of the gas distribution tank 400; the gas distribution tank 400 is provided with a gas outlet, and one gas outlet is connected with one branch pipe 510; in some embodiments, the branch pipe 510 adopts a cortical hose. From the inside of the gas distribution tank 400 to the outside, the gas control switch 520, the calibration cover 530 and the gas alarm 540 are sequentially arranged on the branch pipe 510, and the gas control switch 520 is used to control whether the branch pipe 510 is in communication with the gas distribution tank 400. In some embodiments, a plurality of calibration assemblies 500 are symmetrically provided on both sides of the gas distribution tank 400, for example, the calibration assembly 500 is 10 (hereinafter, the calibration assembly 500 is taken as 10 as an example), and five calibration assemblies 500 are provided on each side of the gas distribution tank 400.

[0035] It should be noted that the gas in the standard gas cylinder 100 enters the gas distribution tank 400 through the output pipeline 600, the loading and unloading assembly 200 and the gas conveying pipeline 300, and the 10 gas outlets of the gas distribution tank 400 can simultaneously output gas, each gas outlet is connected with the calibration cover 530 and the gas alarm 540 through the branch pipe 510, and each gas outlet can be individually controlled through the gas control switch 520, and the calibration cover 530 covers the sensor sensing port of the gas alarm 540 to perform the ventilation test.

[0036] Specifically, the gas distribution tank 400 is detachably connected with the standard gas cylinder 100 through the loading and unloading assembly 200, and a plurality of calibration assemblies 500 are provided on the gas distribution tank 400, and the gas control switch 520, the calibration cover 530 and the gas alarm 540 are arranged on each calibration assembly 500. In this way, whether the gas alarm 540 in each calibration assembly 500 is in communication with the gas distribution tank 400 can be controlled through the gas control switch 520, so that the calibration of a plurality of gas alarms 540 can be realized at one time, the efficiency of the calibration of the gas alarm 540 is improved, and the replacement frequency of the standard gas cylinder is reduced. The calibration operation of the gas alarm 540 is performed by using the present application, and at least 50% or more of the operation time can be saved; in addition, a plurality of calibration values can be provided, thereby improving the accuracy of the calibration.

[0037] It should be noted that in the calibration process of the gas alarm 540, the gas alarm 540 is first ventilated, at which time the value of the gas alarm 540 will rise, then the ventilation to the gas alarm 540 needs to be disconnected so as to make the value of the gas alarm 540 drop, and after the value drops, the gas alarm 540 is ventilated again, at which time the displayed value is the calibration value of the gas alarm 540. The process of value drop needs a period of time, so it will affect the efficiency of the calibration.

[0038] The present application provides a plurality of calibration assemblies 500, which can be divided into groups during calibration, and each group can include a plurality of calibration assemblies 500. In this embodiment, the 10 calibration assemblies 500 are divided into three groups, the first group includes the first calibration assembly to the third calibration assembly, the second group includes the fourth calibration assembly to the sixth calibration assembly, and the third group includes the seventh calibration assembly to the tenth calibration assembly. The 10 gas alarms 540 are carbon monoxide alarms with a range of 0-1000 ppm (the minimum alarm point is 24 ppm), and the specific steps are as follows:

[0039] S1: Preparation: First, check the appearance of the gas alarm 540 and its sound and light alarm device. If it does not meet the requirements of the calibration procedure, it is not qualified for calibration, and a calibration result notification is issued. If it meets the requirements, install the gas alarm 540 to be tested on each branch, and install the standard gas cylinder 100 (for example, a 36 ppm standard gas cylinder 100), and proceed to the next step.

[0040] S2: Gas calibration stage: The calibration process of each group is divided into preliminary calibration, numerical value decline state, and final calibration. Preliminary calibration is to supply gas to each gas alarm 540 in the group, and then close each gas control switch 520 (disconnect the gas supply to each gas alarm 540 in the group) after the numerical value of the gas alarm 540 rises. Then, the numerical value of each gas alarm 540 will gradually decrease, which is the numerical value decline state. Final calibration refers to supplying gas to each gas alarm 540 in the group again after the numerical value of each gas alarm 540 in the group decreases, thereby calibrating each gas alarm 540 in the group.

[0041] First, the first group is preliminarily calibrated, then the second group is preliminarily calibrated when the first group is in the numerical value decline state, and then the third group is preliminarily calibrated when the second group is in the numerical value decline state. The first group is finally calibrated when the third group is in the numerical value decline state, and then the final calibration of the second group and the third group is performed in turn.

[0042] S3: Result recording: After the final calibration of each gas alarm 540 is completed, determine whether it meets the requirements of the calibration procedure, and record the results.

[0043] S4: Replace the standard gas cylinder 100 with different concentrations (for example, 300 ppm and 700 ppm), and repeat steps 2-3.

[0044] S5: If the final test results of the equipment meet all the requirements, the calibration is qualified and a calibration certificate is issued. If one of the requirements is not met, the calibration is not qualified and a calibration result notification is issued.

[0045] Therefore, the application can further calibrate the next group of gas alarms 540 when the previous group of gas alarms 540 is in a numerical decline state, thereby further improving efficiency.

[0046] Further, the application further comprises a leakage prevention alarm 700 arranged at the position where the gas delivery pipe 300 is connected with the gas shunt tank 400. Specifically, it is found in use that the position where the gas delivery pipe 300 is connected with the gas shunt tank 400 is prone to gas leakage, so the embodiment arranges the leakage prevention alarm 700 at this position to prevent poisoning caused by leakage due to poor sealing of the device and improve the safety performance of the device.

[0047] Since different concentrations of gas are required to calibrate the gas alarm 540, multiple standard gas bottles 100 need to be replaced. In order to facilitate quick replacement, the embodiment proposes the structure of the assembly 200 as follows.

[0048] Further, the assembly 200 comprises a detachably connected metal sleeve 210 and a sleeve 220; the sleeve 220 is sealingly connected with the output pipe 600 of the standard gas bottle 100, and the metal sleeve 210 is sealingly connected with the gas delivery pipe 300. Specifically, the embodiment can realize the docking of the standard gas bottle 100 and the gas shunt tank 400 by installing and removing the metal sleeve 210 and the sleeve 220, thereby facilitating the replacement of the standard gas bottle 100.

[0049] Further, the metal sleeve 210 and the sleeve 220 are threadedly connected. Specifically, the threaded connection facilitates quick installation and removal.

[0050] Further, the assembly 200 further comprises a limiting portion 230, and the limiting portion 230 comprises a limiting protrusion 231 and a limiting groove 232; the limiting protrusion 231 is rotationally connected to the outer wall of the sleeve 220; in some embodiments, the limiting portion 230 is multiple (for example, two). In some possible implementations, the outer wall of the sleeve 220 is provided with a U-shaped block 221, and one end of the limiting protrusion 231 is hinged in the U-shaped block 221. The limiting groove 232 is arranged on the outer wall of the metal sleeve 210; the limiting protrusion 231 is clamped in the limiting groove 232. Specifically, after the sleeve 220 and the metal sleeve 210 are threadedly installed in place, the limiting protrusion 231 is rotated to be clamped in the limiting groove 232, which can limit the relative rotation of the sleeve 220 and the metal sleeve 210, thereby avoiding leakage during calibration.

[0051] Further, the limiting protrusion 231 and the limiting groove 232 are magnetically adsorbed and fixed. Specifically, the embodiment adopts magnetic adsorption to further fix the limiting protrusion 231 and the limiting groove 232, thereby avoiding the limiting protrusion 231 from being detached from the limiting groove 232 due to gravity when the limiting protrusion 231 is located below.

[0052] Further, the free end of the limiting protrusion 231 is provided with a protruding part 233. Specifically, the embodiment facilitates the rotation of the limiting protrusion 231 by the hand grabbing the protruding part 233.

[0053] Further, the detachable assembly 200 further comprises a sealing component 240, which comprises a rubber sleeve 241 arranged in the metal sleeve 210, a first sealing gasket 242 mounted in the metal sleeve 210, a fixing ring 243, a second sealing gasket 244, and a blocking ring 245 mounted in the sleeve 220. The rubber sleeve 241 is connected to the front end of the fixing ring 243, and the outer diameter of the rubber sleeve 241 is smaller than that of the fixing ring 243. After the metal sleeve 210 and the sleeve 220 are mounted and connected, the rubber sleeve 241 is inserted into the sleeve 220 and abuts against the rear end surface of the blocking ring 245; the first sealing gasket 242 is sleeved on the rubber sleeve 241, and the first sealing gasket 242 abuts between the fixing ring 243 and the sleeve 220, and the second sealing gasket 244 abuts between the fixing ring 243 and the gas delivery conduit 300; the output pipeline 600 and the sleeve 220 are sealingly connected through the first sealing gasket 242 and the rubber sleeve 241; and the gas delivery conduit 300 and the metal sleeve 210 are sealingly connected through the second sealing gasket 244. The first sealing gasket 242, the second sealing gasket 244, and the rubber sleeve 241 are in a contracted state. The first sealing gasket 242 and the second sealing gasket 244 have the same structure size, and the outer diameter of the second sealing gasket 244 is the same as that of the fixing ring 243. Specifically, after the metal sleeve 210 and the sleeve 220 are connected, the rubber sleeve 241 can be inserted into the interior of the sleeve 220, and the rubber sleeve 241 will be extruded and deformed. When the rubber sleeve 241 is in the proper position in the sleeve 220, the rubber sleeve 241 will abut against the end surface of the blocking ring 245. At the same time, the first sealing gasket 242 abuts against the sleeve 220, and the second sealing gasket 244 abuts against the surface of the anti-dropping ring 310. In this way, the sealing effect is achieved by extruding the rubber sleeve 241, the first sealing gasket 242, and the second sealing gasket 244. The sealing of the present application is good, which can reduce the risk of gas leakage, improve the safety of calibration work, improve the reliability of detection of toxic and harmful gases, and improve the occupational health guarantee of the identification personnel.

[0054] Further, the outer wall of the front end surface of the rubber sleeve 241 is provided with a tapered surface. Specifically, the design of the tapered surface makes the sealing effect better.

[0055] Further, the front end of the gas delivery conduit 300 is provided with an anti-dropping ring 310; the metal sleeve 210 is provided with a mounting groove, and the anti-dropping ring 310 is mounted in the mounting groove. Specifically, the embodiment realizes the movable connection of the gas delivery conduit 300 and the metal sleeve 210 through the anti-dropping ring 310, so as to avoid the bending of the gas delivery conduit 300 when the output pipeline 600 of the standard gas cylinder 100 is disassembled and assembled. When the metal sleeve 210 and the sleeve pipe 220 are mounted, the second sealing gasket 244 is clamped between the anti-dropping ring 310 and the fixing ring 243.

[0056] The application realizes the sealing effect by rotating the metal sleeve 210 to make it threadedly connected and fixed with the sleeve pipe 220, so as to ensure that the sealing component 240 enters the inside of the sleeve pipe 220. When the metal sleeve 210 is rotated to the appropriate position, the limiting protrusion 231 is rotated again to enter the limiting groove 232, and the limiting protrusion 231 and the limiting groove 232 are fixed by magnetic force, so as to prevent the rotation of the metal sleeve 210 in the process of calibration. Conversely, when disassembly is needed, the limiting protrusion 231 is rotated to separate from the limiting groove 232, and then the metal sleeve 210 and the sleeve pipe 220 are counterclockwise rotated, so that the sealing component 240 moves out of the inside of the sleeve pipe 220, thereby completing the disassembly process. The structure design realizes the convenient disassembly and assembly functions, and facilitates the replacement of the standard gas cylinder 100. As can be seen, the application sets the sleeve pipe 220 and the metal sleeve 210 to facilitate the realization of threadedly connected and fixed, and ensures the sealing performance by installing the sealing component 240. In addition, the limiting protrusion 231 is rotated to enter the inside of the limiting groove 232, which further limits the rotation of the metal sleeve 210. The structure design facilitates the replacement and disassembly of the standard gas cylinder 100, while maintaining the sealing effect, so that the operation is simple and convenient.

[0057] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the application.

Claims

1. A high efficiency gas alarm calibrator apparatus, characterized by: The utility model relates to a standard gas bottle, a loading and unloading assembly, a gas conveying pipe and a gas distribution tank are sequentially connected from front to back, the loading and unloading assembly is detachably connected with the outlet of the standard gas bottle. A plurality of calibration assemblies are connected to the gas distribution tank, the calibration assembly comprises a branch pipe, a gas control switch, a calibration cover and a gas alarm, the branch pipe is in communication with the inside of the gas distribution tank, the gas control switch, the calibration cover and the gas alarm are sequentially arranged on the branch pipe from the inside of the gas distribution tank to the outside thereof, and the gas control switch is used to control whether the branch pipe is in communication with the gas distribution tank. The utility model further comprises a leakage-proof alarm arranged at the position where the gas conveying pipe is connected to the gas distribution tank.

2. The high efficiency gas alarm calibration device of claim 1, wherein: The loading and unloading assembly comprises a detachable sleeve and a metal sleeve, the metal sleeve is sealingly connected with the gas conveying pipe, and the sleeve is sealingly connected with the standard gas bottle.

3. The high efficiency gas alarm calibrator of claim 1, wherein: The metal sleeve is threadedly connected with the sleeve.

4. The high efficiency gas alarm calibration device of claim 3, wherein: The loading and unloading assembly further comprises a limiting protrusion and a limiting groove, the limiting protrusion is rotatably connected to the outer wall of the sleeve, the limiting groove is arranged on the outer wall of the metal sleeve, and the limiting protrusion is clamped in the limiting groove.

5. The high efficiency gas alarm calibration device of claim 4, wherein: The limiting protrusion and the limiting groove are magnetically adsorbed and fixed.

6. The high efficiency gas alarm calibration device of claim 5, wherein: The free end of the limiting protrusion is provided with a protruding portion.

7. The high efficiency gas alarm calibrator of claim 5, wherein: The loading and unloading assembly further comprises a rubber sleeve arranged in the metal sleeve, a first sealing gasket mounted in the metal sleeve, a fixing ring, a second sealing gasket and a blocking ring mounted in the sleeve, the rubber sleeve is connected to the front end of the fixing ring, the rubber sleeve is inserted into the sleeve and abuts against the rear end face of the blocking ring, the first sealing gasket is sleeved on the rubber sleeve, the first sealing gasket abuts between the fixing ring and the sleeve, and the second sealing gasket abuts between the fixing ring and the gas conveying pipe.

8. The high efficiency gas alarm calibration device of claim 3, wherein: A conical surface is arranged on the outer wall of the front end face of the rubber sleeve.

9. The high efficiency gas alarm calibrator of claim 8, wherein: The front end of the gas conveying pipe is provided with an anti-falling ring, the metal sleeve is provided with a mounting groove, and the anti-falling ring is mounted in the mounting groove.

10. The high efficiency gas alarm calibration device of claim 3, wherein: ​

Images