Calibrating device for toxic gas alarm

Abstract

The utility model relates to the technical field of alarm verification, in particular to a toxic gas alarm verification device. Comprising a box body, a plurality of standard gas steel cylinders arranged in the box body, a gas steel cylinder fixing sleeve fixedly welded on a bottom plate in the box body, a pressure reducing valve connected with the gas steel cylinders through a hose, a rotor flow meter arranged on the hose and a gas pipeline mechanism arranged in the box body and connected with the hose, and the gas pipeline mechanism comprises an electromagnetic valve connected with the hose. The box body is internally provided with a solenoid valve, the gas buffer cavity group is connected with the solenoid valve, the gas buffer cavity group is jointly connected with a gas outlet pipe, the end part of the gas outlet pipe is provided with a connector used for being connected with a to-be-detected alarm, and a pipe rolling mechanism is arranged in the box body. The problems that a calibrating device can be moved according to needs, and different standard gas cylinders are easy to replace when an alarm is calibrated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of alarm detection, in particular to a toxic gas alarm detection device. Background Art

[0002] Toxic and hazardous gases are currently a major concern due to their inherent toxicity and potential life-threatening effects. Gas alarms are often installed in areas prone to the generation of these gases, such as chemical plants, mines, and laboratories. These alarms quickly sound when toxic and hazardous gases appear in the area, prompting people to take protective measures and evacuate quickly to avoid harm.

[0003] To ensure production safety in flammable and explosive gas production plants, detection points and combustible gas detection alarms must be installed at various locations within the plant. Because reliability is crucial, the alarms frequently undergo performance verification. Verification equipment typically includes flow meters, batteries, computers, and various toxic gas cylinders for calibration. Verifying the various alarms within the plant requires transporting these devices to the various detection points, necessitating a carrier that can accommodate these devices and prevent collisions during transport.

[0004] Toxic and hazardous gas alarms need to be calibrated after production and during actual use. There are many problems with the calibration process of existing molded alarms. Currently, multiple toxic and hazardous gases and zero-point gases of different concentrations are generally introduced into a single alarm, and the gas replacement process is inefficient. This not only requires workers to concentrate highly for a long time, resulting in extremely high labor intensity, but also when switching the calibration gas, due to complex operations and limitations of existing equipment, it is very easy for gas to leak from the gas cylinder. The spread of leaked gas will threaten the health of on-site workers, so the current problems in the calibration process of toxic and hazardous gas alarms need to be solved urgently. Utility Model Content

[0005] In order to solve the problem of mobile alarm calibration and easy replacement of standard gas cylinders, the utility model provides a toxic gas alarm calibration device.

[0006] In the first aspect, the utility model provides a toxic gas alarm calibration device, which adopts the following technical solutions:

[0007] A toxic gas alarm calibration device includes a box body, multiple standard gas cylinders placed in the box body, a gas cylinder fixing sleeve fixedly welded to the bottom plate of the box body, a pressure reducing valve connected to the gas cylinder through a hose, a rotor flowmeter arranged on the hose, and a gas pipeline mechanism arranged in the box body and connected to the hose, the gas pipeline mechanism includes a solenoid valve connected to the hose, a gas buffer chamber group connected to the solenoid valve, the gas buffer chamber group is commonly connected to an outlet pipe, the end of the outlet pipe is provided with a connector for connecting to the alarm to be tested, and a pipe winding mechanism is provided in the box body.

[0008] Furthermore, the gas pipeline mechanism is connected to an electrical control mechanism, which includes a controller arranged on the top plate outside the box body, a control box arranged at the lower end of the controller inside the box body, and a solenoid valve control module installed in the control box.

[0009] Furthermore, the controller includes an embedded display screen and a plurality of solenoid valve control buttons. The number of the solenoid valve control buttons corresponds to the number of the gas buffer chamber groups, and each independent solenoid valve control button corresponds to a single cell of the gas buffer chamber group through a solenoid valve.

[0010] Furthermore, the pipe winding mechanism includes a supporting cover, a pipe winding wheel placed in the supporting cover, a pipe winding shaft passing through the pipe winding wheel is arranged along the axis of the pipe winding wheel, a spring baffle is connected to the outer side of the pipe winding wheel and the pipe winding shaft, a spring is provided between the pipe winding wheel and the spring baffle, one end of the spring is fixed on the pipe winding wheel, and the other end of the spring is clamped on the pipe winding shaft.

[0011] Furthermore, the support cover is fixedly connected to the inner wall of the box by screws.

[0012] Furthermore, the winding tube mechanism also includes a locking assembly arranged on the spring baffle, the locking assembly includes a positioning piece, a spring arranged on the spring baffle and connected to the positioning piece, and a gear wheel arranged on the support cover and connected to the winding tube shaft, the inner diameter of the gear wheel always conflicts with the positioning piece, and the gear wheel includes a gear area and a space area.

[0013] Furthermore, a pipe hole is provided on the side wall of the box body, and a limiting ring is provided at one end of the air outlet pipe close to the connector, and the diameter of the limiting ring is larger than the diameter of the pipe hole.

[0014] Furthermore, an instrument panel is extended upward from the rear portion of the box body, a plurality of holes for fixing instruments are provided on the instrument panel, and the rotor flowmeter is arranged in the holes for fixing instruments.

[0015] Furthermore, handles are provided on both sides of the box body, and running wheels are provided on the bottom of the box body.

[0016] Furthermore, a parts drawer is provided inside the box.

[0017] In summary, the present invention has the following beneficial technical effects:

[0018] 1. The utility model proposes a toxic gas alarm calibration device, which includes a plurality of standard gas cylinders and gas cylinder fixing sleeves in terms of structural design. The gas cylinders are fixed on the bottom plate of the box body. The handles on both sides of the box body and the walking wheels at the bottom facilitate the movement and transportation of the device, so that the device can be flexibly used in different workplaces. The setting of the parts drawer provides convenience for the storage of tools and parts, ensuring that the required items can be quickly found when needed. The design of the pipe winding mechanism allows the outlet pipe to be quickly and neatly stored when not in use, avoiding entanglement and damage of the outlet pipe, improving the neatness and service life of the device, and the alarm can be calibrated by pulling out the outlet pipe and connecting it to the alarm.

[0019] 2. The utility model proposes a toxic gas alarm calibration device, including a gas pipeline mechanism, which can more conveniently change the type of detection gas through a solenoid valve. The gas buffer chamber group is connected to the solenoid valve and is jointly connected to the outlet pipe. The solenoid valve can quickly switch between gases of different concentrations, greatly shortening the gas switching time, improving the efficiency of the calibration work, and reducing the probability of safety accidents that may be caused by gas leakage, thereby ensuring the physical health and life safety of the staff and making the calibration work smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a toxic gas alarm calibration device according to an embodiment of the present utility model.

[0021] Figure 2 It is a structural schematic diagram of the gas pipeline mechanism of an embodiment of the present utility model.

[0022] Figure 3 It is a structural schematic diagram of the tube winding mechanism of an embodiment of the present utility model.

[0023] Figure 4 It is a structural schematic diagram showing the bottom surface of the tube winding mechanism of an embodiment of the present utility model.

[0024] Figure 5 It is a bottom schematic diagram of the tube winding mechanism of an embodiment of the present utility model.

[0025] Among them, 1. Box body; 101 top plate; 102 bottom plate; 103, instrument panel; 104, hole for fixing the instrument panel; 105, handle; 106, walking wheel; 107, parts drawer; 108, pipe hole; 2. Standard gas cylinder; 3. Gas cylinder fixing sleeve; 4. Gas pipeline mechanism; 401, solenoid valve; 402, gas buffer chamber group; 403, gas outlet pipe; 5. Hose reel mechanism; 501, support cover; 502, hose reel; 503, hose reel shaft; 504, spring baffle; 505, spring; 506, positioning part; 507, spring; 508, gear wheel; 509, gear area; 510, empty area; 6. controller; 601, display screen; 602, solenoid valve control button. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Reference Figure 1 and Figure 2 , a toxic gas alarm calibration device of this embodiment includes a box body 1, multiple standard gas cylinders 2 placed in the box body 1, a gas cylinder fixing sleeve 3 fixedly welded on the bottom plate inside the box body 1, a pressure reducing valve connected to the gas cylinder through a hose, a rotor flowmeter arranged on the hose, and a gas pipeline mechanism 4 connected to the hose in the box body 1, the gas pipeline mechanism 4 includes a solenoid valve 401 connected to the hose, a gas buffer chamber group 402 connected to the solenoid valve 401, the gas buffer chamber group 402 is commonly connected to an outlet pipe 403, and the end of the outlet pipe 403 is provided with a connector for connecting to the alarm to be tested, and a pipe winding mechanism 5 is provided in the box body 1.

[0029] During operation, the connector is clipped onto the detection head of the alarm. By controlling the solenoid valve 401, the gas output of the required standard gas cylinder 2 is controlled. The regulating function of the pressure reducing valve provides a stable gas pressure output. The detection gas enters the gas buffer chamber, enters the gas outlet pipe 403 again, and then enters the alarm, completing a gas detection. When it is necessary to switch to another detection gas, the solenoid valve 401 is controlled to replace the other gas and allow the hose to enter the gas buffer chamber, completing the switching of different gases. After use, the gas outlet pipe 403 is stored by the tube reel mechanism 5.

[0030] Reference Figure 2 The gas pipeline mechanism 4 is connected to an electrical control mechanism, which includes a controller 6 arranged on the outer top plate of the box body 1, and a control box arranged at the lower end of the controller 6 in the box body 1, and a solenoid valve control module is installed in the control box.

[0031] Reference Figure 1The controller 6 includes an embedded display screen 601 and several solenoid valve control buttons. The number of the solenoid valve control buttons corresponds to the number of the gas buffer chamber groups 402, and each independent solenoid valve control button corresponds to a single cell of the gas buffer chamber group 402 through the solenoid valve 401.

[0032] The design of independent and centralized solenoid valve 401 control facilitates the operation of the switch of the solenoid valve 401, and each solenoid valve control button can control different gases to enter the corresponding gas buffer chamber.

[0033] Reference Figure 3 The pipe winding mechanism 5 includes a supporting cover 501, a pipe winding wheel 502 placed in the supporting cover 501, and a pipe winding shaft 503 that passes through the pipe winding wheel 502 is arranged along the axis of the pipe winding wheel 502. A spring 505 baffle 504 is connected to the outer side of the pipe winding wheel 502 and the pipe winding shaft 503. A spring 505 is provided between the pipe winding wheel 502 and the spring 505 baffle 504. One end of the spring 505 is fixed on the pipe winding wheel 502, and the other end of the spring 505 is clamped on the pipe winding shaft 503.

[0034] The support cover 501 is fixedly connected to the inner wall of the box body 1 by screws.

[0035] Reference Figure 4 and Figure 5 The tube winding mechanism 5 also includes a locking assembly arranged on the spring 505 baffle 504, and the locking assembly includes a positioning member 506, a spring 507 arranged on the spring 505 baffle 504 and connected to the positioning member 506, and a gear wheel 508 arranged on the support cover 501 and connected to the tube winding shaft 503. The inner diameter of the gear wheel 508 always conflicts with the positioning member 506, and the gear wheel 508 includes a gear area 509 and an empty area 510.

[0036] A pipe hole 108 is provided on the side wall of the box body 1 , and a limiting ring is provided at one end of the air outlet pipe 403 close to the connector, wherein the diameter of the limiting ring is larger than the diameter of the pipe hole 108 .

[0037] During operation, when the outlet pipe 403 is pulled, the hose reel 502, the spring 505, and the positioning member 506 rotate together. At this time, the spring 505 exerts an opposing force, and the positioning member 506, under the action of the spring 507, always contacts the tooth block. If the outlet pipe 403 is pulled and the positioning member 506 contacts the tooth area 509, the outlet pipe 403 will not retract into the hose reel 502. After the operation is completed, as long as the outlet pipe 403 is pulled again, the positioning member 506 is in the empty area 510. At this time, the hose is in an unpositioned state. Due to the reverse force of the spring 505, the outlet pipe 403 and the hose reel 502 rotate in the opposite direction, and the outlet pipe 403 retracts onto the hose reel 502. Due to the design of the limit ring, the connector will remain outside the housing 1 and will not retract into the housing 1.

[0038] An instrument panel 103 extends upward from the rear portion of the box body 1 . The instrument panel 103 is provided with a plurality of holes for fixing instruments, and the rotor flowmeter is arranged in the holes for fixing instruments.

[0039] Handles 105 are provided on both sides of the box body 1 , and running wheels 106 are provided on the bottom of the box body 1 .

[0040] A parts drawer 107 is also provided inside the box 1 .

[0041] The instrument panel 103 is convenient for observing the gas flow and whether there is gas passing through. By grasping the handle 105, the box 1 is pushed to the position that needs to be inspected. Commonly used tools such as screwdrivers, replacement alarms, etc. are placed in the drawer.

[0042] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A toxic gas alarm calibration device, characterized in that: The invention comprises a box (1), a plurality of standard gas cylinders (2) placed in the box (1), a pressure reducing valve connected to the gas cylinders via a hose, a rotor flowmeter arranged on the hose, and a gas pipeline mechanism (4) arranged in the box (1) and connected to the hose, wherein the gas pipeline mechanism (4) comprises a solenoid valve (401) connected to the hose, a gas buffer chamber group (402) connected to the solenoid valve (401), the gas buffer chamber group (402) being connected to a gas outlet pipe (403), the end of the gas outlet pipe (403) being provided with a connector for connecting to an alarm to be detected, and a pipe reel mechanism (5) being provided in the box (1).

2. The toxic gas alarm testing device according to claim 1, characterized in that: The gas pipeline mechanism (4) is connected to an electrical control mechanism, which comprises a controller (6) arranged on the outer top plate of the box body (1), a control box arranged at the lower end of the controller (6) inside the box body (1), and a solenoid valve control module installed in the control box.

3. The toxic gas alarm testing device according to claim 2, characterized in that: The controller (6) includes a built-in display screen (601) and a plurality of solenoid valve control buttons, wherein the number of the solenoid valve control buttons corresponds to the number of the gas buffer chamber groups (402), and each independent solenoid valve control button corresponds to a single unit of the gas buffer chamber group (402) through the solenoid valve (401).

4. The toxic gas alarm testing device according to claim 1, characterized in that: The pipe reeling mechanism (5) comprises a supporting cover (501), a pipe reel (502) placed inside the supporting cover (501), a pipe reel shaft (503) penetrating the pipe reel (502) arranged along the axis of the pipe reel (502), a spring (505) baffle (504) connected to the pipe reel shaft (503) on the outside of the pipe reel (502), a spring (505) provided between the pipe reel (502) and the spring (505) baffle (504), one end of the spring (505) fixed to the pipe reel (502), and the other end of the spring (505) clamped to the pipe reel shaft (503).

5. The toxic gas alarm testing device according to claim 4, characterized in that: The support cover (501) is fixedly connected to the inner wall of the box body (1) by screws.

6. The toxic gas alarm testing device according to claim 5, characterized in that: The tube reeling mechanism (5) further comprises a locking assembly arranged on the spring (505) baffle (504), the locking assembly comprising a positioning member (506), a spring (507) arranged on the spring (505) baffle (504) and connected to the positioning member (506), and a gear wheel (508) arranged on the support cover (501) and connected to the tube reeling shaft (503), wherein the inner diameter of the gear wheel (508) always contacts the positioning member (506), and the gear wheel (508) comprises a gear area (509) and a space area (510).

7. The toxic gas alarm testing device according to claim 1, characterized in that: A pipe hole (108) is provided on the side wall of the box body (1), and a limiting ring is provided at one end of the air outlet pipe (403) close to the connector, wherein the diameter of the limiting ring is larger than the diameter of the pipe hole (108).

8. The toxic gas alarm testing device according to claim 1, characterized in that: An instrument panel (103) extends upward from the rear of the box body (1). The instrument panel (103) is provided with a plurality of holes for fixing instruments, and the rotor flowmeter is arranged in the holes for fixing instruments.

9. The toxic gas alarm testing device according to claim 1, characterized in that: Handles (105) are provided on both sides of the box body (1), and running wheels (106) are provided on the bottom of the box body (1).

10. The toxic gas alarm testing device according to claim 1, characterized in that: A parts drawer (107) is also provided inside the box (1).

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