Gas detection alarm verification system

Abstract

The utility model discloses a gas detection alarm verification system, comprising a standard gas cylinder arranged in a verification area; one end of the main pressure guide pipe is connected with the standard gas cylinder, and when the main pressure guide pipe is communicated with the standard gas cylinder, gas in the standard gas cylinder automatically flows into the main pressure guide pipe; wherein the main pressure guide pipe is connected with a measurable area of a detection sensor in the gas detection alarm. The gas detection alarm verification system provided by the utility model can realize centralized detection of the gas detection alarms, is convenient and safe, does not need a worker to go to the field to carry out ventilation detection on the gas detection alarms one by one, and improves the detection efficiency of the gas detection alarms.

Description

Technical Field

[0001] The utility model relates to the field of safety monitoring, and particularly to a calibration system for a gas detection alarm. Background Art

[0002] A gas detection alarm is a safety detection device widely used in industries such as chemical industry, mining, medical treatment, and environmental protection. Its function is to timely detect the concentration of dangerous gases existing in the air and give an alarm. Gas detection alarms not only have a large quantity but also are scattered. In addition, to ensure the normal operation of gas alarms, regular inspections must be carried out according to specific verification procedures.

[0003] The current inspection method is that staff go to the site to conduct ventilation inspections on gas detection alarms one by one, which is time-consuming and laborious. Moreover, most standard inspection gases are toxic or flammable, posing great potential safety hazards. Therefore, it is very necessary to provide a safe, convenient, and efficient calibration system for gas detection alarms to improve the inspection efficiency and safety of gas detection alarms. Summary of the Utility Model

[0004] The utility model provides a calibration system for a gas detection alarm to improve the inspection efficiency and safety of the gas detection alarm.

[0005] The utility model provides a calibration system for a gas detection alarm, including:

[0006] A standard gas cylinder, arranged in the calibration area;

[0007] A main pressure guiding pipe, one end of the main pressure guiding pipe is connected to the standard gas cylinder, and when the main pressure guiding pipe is communicated with the standard gas cylinder, the gas in the standard gas cylinder automatically flows into the main pressure guiding pipe;

[0008] Wherein, the main pressure guiding pipe is connected to the measurable area of the detection sensor in the gas detection alarm.

[0009] In one embodiment, a standard gas two-way three-way electromagnetic valve is arranged between the standard gas cylinder and the main pressure guiding pipe. The standard gas two-way three-way electromagnetic valve is connected to the main pressure guiding pipe through port B, and the standard gas two-way three-way electromagnetic valve is connected to the standard gas cylinder through port P. Wherein, the standard gas cylinder is connected to port P of the standard gas two-way three-way electromagnetic valve through a standard gas cylinder pressure reducing valve.

[0010] In one embodiment, when the standard gas two-way three-way electromagnetic valve is powered on, port B and port P of the standard gas two-way three-way electromagnetic valve are communicated, so that the main pressure guiding pipe and the standard gas cylinder are communicated.

[0011] In one embodiment, the standard gas two-way three-way solenoid valve is externally connected to the instrument air source through port A.

[0012] In one embodiment, between the standard gas two-way three-way solenoid valve and the instrument air source, a two-way two-way instrument solenoid valve, a filter pressure reducing valve, a check valve, and a DN20 ball valve are sequentially arranged.

[0013] In one embodiment, the other end of the main pressure guide pipe is connected to the venting place.

[0014] In one embodiment, a two-way two-way venting solenoid valve is arranged at the position of the main pressure guide pipe at the venting place.

[0015] In one embodiment, the gas detection alarm calibration system further includes:

[0016] At least one pressure guide pipe branch, one end of the pressure guide pipe branch is connected to the main pressure guide pipe.

[0017] In one embodiment, a two-way two-way calibration solenoid valve is arranged on the pressure guide pipe branch. When the two-way two-way calibration solenoid valve is energized, the main pressure guide pipe is communicated with the pressure guide pipe branch.

[0018] In one embodiment, the other end of the pressure guide pipe branch is arranged in the measurable area of the detection sensor in the gas detection alarm, so that the main pressure guide pipe is connected to the measurable area of the detection sensor in the gas detection alarm;

[0019] Wherein, when the main pressure guide pipe is communicated with the pressure guide pipe branch, the gas in the main pressure guide pipe flows into the pressure guide pipe branch, and then the other in the main pressure guide pipe is transmitted to the measurable area of the detection sensor in the gas detection alarm through the pressure guide pipe branch.

[0020] The beneficial effects of the present utility model are as follows: The present utility model provides a gas detection alarm calibration system including a standard gas cylinder and a main pressure guide pipe. The standard gas cylinder is arranged in the calibration area; the main pressure guide pipe, one end of the main pressure guide pipe is connected to the standard gas cylinder. When the main pressure guide pipe is communicated with the standard gas cylinder, the gas in the standard gas cylinder automatically flows into the main pressure guide pipe; wherein, the main pressure guide pipe is connected to the measurable area of the detection sensor in the gas detection alarm. The gas detection alarm calibration system provided by the present utility model connects the standard gas cylinder with the measurable area of the detection sensor in the gas detection alarm through the main pressure guide pipe. Therefore, the gas in the standard gas cylinder can be transmitted to the measurable area of the detection sensor in the gas detection alarm through the main pressure guide pipe, eliminating the need for staff to go to the site to conduct ventilation inspections on gas detection alarms one by one, improving the inspection efficiency of gas detection alarms and enhancing safety.

[0021] Other features and advantages of the present utility model will be described in the following specification. Moreover, some of them will become apparent from the specification or be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained by the structures specifically pointed out in the written specification, claims, and drawings.

[0022] The technical solutions of the present utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0023] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0024] Figure 1 It is a schematic structural diagram of a gas detection alarm calibration system in an embodiment of the present utility model.

[0025] Description of the Reference Numerals in the Drawings:

[0026] 101 - Standard gas cylinder; 102 - Main pressure guiding pipe; 103 - Standard gas two-way three-way solenoid valve; 104 - Two-way two-way instrument solenoid valve; 105 - Filter pressure reducing valve; 106 - Check valve; 107 - DN20 ball valve; 108 - Two-way two-way vent solenoid valve; 109 - Pressure guiding pipe branch; 110 - Two-way two-way calibration solenoid valve; 111 - Gas detection alarm; 112 - Instrument air source; 113 - Venting place; 114 - Standard gas cylinder pressure reducing valve; 115 - Pressure remote transmitter. Detailed Embodiments

[0027] Reference is made herein to the various solutions and features of the present utility model with reference to the drawings.

[0028] It should be understood that various modifications can be made to the embodiments applied herein. Therefore, the above specification should not be regarded as a limitation, but only as an example of the embodiments. Those skilled in the art will think of other modifications within the scope and spirit of the present utility model.

[0029] The drawings included in the specification and constituting a part of the specification show the embodiments of the present utility model, and are used to explain the principles of the present utility model together with the general description of the present utility model given above and the detailed description of the embodiments given below.

[0030] These and other characteristics of the present utility model will become apparent from the following description of the preferred forms of the embodiments given as non-limiting examples with reference to the drawings.

[0031] It should also be understood that although the present utility model has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present utility model, which have the features as described in the claims and thus are all within the protection scope defined thereby.

[0032] When combined with the accompanying drawings, the above and other aspects, features and advantages of the present utility model will become more obvious in view of the following detailed description.

[0033] Hereinafter, specific embodiments of the present utility model will be described with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present utility model and can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present utility model with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but are merely used as a basis and representative basis for the claims to teach those skilled in the art to use the present utility model in substantially any suitable detailed structure in a variety of ways.

[0034] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", which may each refer to one or more of the same or different embodiments according to the present utility model.

[0035] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0036] To ensure the normal operation of the gas alarm, regular verification must be carried out in accordance with specific verification procedures. In the prior art, according to the provisions of Article 5.5 of JJG693-2011 "Verification Regulation for Combustible Gas Detectors", the verification period generally does not exceed 1 year, and the inspection period can be shortened in special areas to ensure the accuracy and reliability of the gas alarm.

[0037] For example, a certain unit currently has 680 gas detectors distributed in various areas of each work section. When the on-site analysis instrument fails, the alarm lights of the on-site alarms do not light up, and the hollow screen shows no alarm. It is very difficult to cover all aspects during daily inspections and detect problems in a timely manner. Another example is that there are 52 different types of gas detectors on the 1st to 9th floors of the Gasification 612 work section. Currently, the inspection method is for the staff to carry a 4L standard gas cylinder to the site to conduct ventilation inspections on the alarms one by one, which is time-consuming and laborious, increasing the labor intensity. Most of the standard inspection gases are toxic or flammable, bringing great potential safety hazards.

[0038] To this end, the utility model provides a calibration system for a gas detection alarm, which can achieve the following functions: 1. Realize centralized inspection of area alarms, that is, centralized inspection of all alarms in an area. 2. Realize positioning connection of calibration standard gas cylinders: that is, the standard gas cylinders use large-capacity gas cylinders, such as 40L gas cylinders, which are fixedly connected centrally in the calibration area, and no longer use small standard gas cylinders, such as 4L gas cylinders, to ventilate and inspect the alarms one by one on site. 3. Realize remote automatic calibration: Build an automatic inspection program in the GDS (Gas Detection System), and it can realize remote one-key inspection, timed inspection, and arbitrarily select single-meter inspection of area alarms. 4. Realize unattended operation in the device area, reduce labor force, and eliminate potential safety hazards.

[0039] Figure 1 FIG. is a schematic structural diagram of a calibration system for a gas detection alarm in an embodiment of the utility model, as Figure 1 shown, the system includes:

[0040] A standard gas cylinder 101, which is arranged in the calibration area;

[0041] A main pressure pipe 102, one end of the main pressure pipe 102 is connected to the standard gas cylinder 101, when the main pressure pipe 102 and the standard gas cylinder 101 are communicated, the gas in the standard gas cylinder 101 automatically flows into the main pressure pipe 102;

[0042] Wherein, the main pressure pipe 102 is connected to the measurable area of the detection sensor in the gas detection alarm 111.

[0043] It can be understood that, for the convenience of operation, a gas cylinder bracket can be set to facilitate the connection of the standard gas cylinder 101. One or more standard gas cylinders 101 can be set to store different inspection gases respectively; correspondingly, one or more main pressure pipes 102 can also be set to be respectively connected to the standard gas cylinders 101 to realize the inspection of different gases. The volume, pressure, material, etc. of the standard gas cylinder 101, and the caliber, material, etc. of the main pressure pipe 102 can be selected according to specific situations. For example, the standard gas cylinder can be a 40-liter standard gas steel cylinder, and the main pressure pipe 102 can be a stainless steel main pressure pipe with a diameter of 10 mm. The present utility model does not make any limitations in this regard. The standard gas flows along the main pressure pipe 102 from the B port of the standard gas two-way three-way solenoid valve 103 of the standard gas cylinder 101, passes through the same type of gas detection alarm and then to the discharge place, and a pressure remote transmitter 115 is installed on the main pressure pipe connected to the B port of the standard gas two-way three-way solenoid valve 103.

[0044] In one embodiment, a standard gas two-way three-way solenoid valve 103 is provided between the standard gas cylinder 101 and the main pressure guide pipe 102. The standard gas two-way three-way solenoid valve 103 is connected to the main pressure guide pipe 102 through port B, and the standard gas two-way three-way solenoid valve 103 is connected to the standard gas cylinder 101 through port P. Among them, the standard gas cylinder 101 is connected to port P of the standard gas two-way three-way solenoid valve 103 through a standard gas cylinder pressure reducing valve 114. The model of the standard gas two-way three-way solenoid valve 103 can be selected according to the actual situation. For example, a 24VDC standard gas two-way three-way solenoid valve can be selected, and the present utility model does not limit this.

[0045] In one embodiment, when the standard gas two-way three-way solenoid valve 103 is powered on, port B and port P of the standard gas two-way three-way solenoid valve 103 are communicated, so that the main pressure guide pipe 102 and the standard gas cylinder 101 are communicated. That is to say, when the standard gas two-way three-way solenoid valve 103 is powered on, port P and port B are communicated, and port A is closed; when not powered on, port A and port B are communicated, and port P is closed.

[0046] In one embodiment, the standard gas two-way three-way solenoid valve 103 is externally connected to an instrument air source 112 through port A.

[0047] In one embodiment, between the standard gas two-way three-way solenoid valve 103 and the instrument air source 112, a two-way two-way instrument solenoid valve 104, a filter pressure reducing valve 105, a check valve 106, and a DN20 ball valve 107 are sequentially arranged. Among them, the two-way two-way instrument solenoid valve 104 can be selected according to the actual situation. For example, it can be a 24VDC two-way two-way instrument air solenoid valve. The outlet pipeline of the check valve 106 is connected to the IN inlet of the two-way two-way instrument air solenoid valve 104, and the OUT outlet of the two-way two-way instrument air solenoid valve 104 is connected to port A of the standard gas two-way three-way solenoid valve 103.

[0048] In one embodiment, the other end of the main pressure guide pipe 102 is connected to a venting place 113.

[0049] In one embodiment, a two-way two-way venting solenoid valve 108 is provided at the position of the main pressure guide pipe 102 where it is located at the venting place 113.

[0050] In one embodiment, the gas detection alarm calibration system further includes:

[0051] At least one pressure guide pipe branch 109, one end of the pressure guide pipe branch 109 is connected to the main pressure guide pipe 102. For example, a 6-mm diameter stainless steel pressure guide pipe branch 109 can be connected to the main pressure guide pipe 102 at a position 1 cm below the detection sensor of the gas detection alarm 111.

[0052] In one embodiment, a two-position two-way calibration solenoid valve 110 is provided on the pressure guiding pipe branch 109. For example, the two-position two-way calibration solenoid valve 110 can be a 24VDC two-position two-way calibration solenoid valve. When the two-position two-way calibration solenoid valve 110 is powered on, the main pressure guiding pipe 102 is communicated with the pressure guiding pipe branch 109. Among them, during calibration, the opening time of the two-position two-way calibration solenoid valve 110 can be adjusted according to the actual situation.

[0053] In one embodiment, the other end of the pressure guiding pipe branch 109 is arranged in the measurable area of the detection sensor in the gas detection alarm 111, so that the main pressure guiding pipe 102 is connected to the measurable area of the detection sensor in the gas detection alarm 111; among them, when the main pressure guiding pipe 102 is communicated with the pressure guiding pipe branch 109, the gas in the main pressure guiding pipe 102 flows into the pressure guiding pipe branch 109, and then the other in the main pressure guiding pipe 102 is transmitted to the measurable area of the detection sensor in the gas detection alarm 111 through the pressure guiding pipe branch 109.

[0054] In one embodiment, a plurality of pressure guiding pipe branches 109 are provided on the main pressure guiding pipe 102, which are respectively connected to the gas detection alarms 111 at different detection points to realize centralized inspection of the gas detection alarms 111 at multiple detection points.

[0055] In one embodiment, when the two-position two-way vent solenoid valve 108 is powered on, the IN inlet is communicated with the OUT outlet, so that the main pressure guiding pipe ۱۰۲ and the vent ۱۱۳ are communicated, and the purging of the main pressure guiding pipe ۱۰۲ can be realized; when the two-position two-way vent solenoid valve 108 is not powered on, the IN inlet is disconnected from the OUT outlet, so that the main pressure guiding pipe 102 and the vent 113 are disconnected, and the air tightness of pipelines such as the main pressure guiding pipe 102 and the pressure guiding pipe branch 109 is inspected.

[0056] In one embodiment, the gas detection alarm calibration system can be externally connected to a controller, and a control program can be stored in the controller. When the control program runs, the controller can automatically control the power-on and power-off of each solenoid valve, so as to complete the air tightness experiment, and control the gas flow of the standard gas cylinder to the measurable area of the detection sensor in the gas detection alarm 111, etc.

[0057] In the present utility model, the standard gas cylinder meets the national standard, and the capacity only needs to reach the calibration usage amount once or more than once, and no specific capacity requirement is made. The solenoid valve is selected as explosion-proof or non-explosion-proof according to the on-site use environment, and the stainless steel pressure guiding pipeline material meets the requirements and does not adsorb and react with the calibration standard gas.

[0058] The beneficial effects of the present utility model are as follows: The present utility model provides a gas detection alarm calibration system including a standard gas cylinder and a main pressure pipe. The standard gas cylinder is arranged in the calibration area; for the main pressure pipe, one end of the main pressure pipe is connected to the standard gas cylinder, and when the main pressure pipe is communicated with the standard gas cylinder, the gas in the standard gas cylinder automatically flows into the main pressure pipe; wherein, the main pressure pipe is connected to the measurable area of the detection sensor in the gas detection alarm. The gas detection alarm calibration system provided by the present utility model connects the standard gas cylinder with the measurable area of the detection sensor in the gas detection alarm through the main pressure pipe. Therefore, the gas in the standard gas cylinder can be transmitted to the measurable area of the detection sensor in the gas detection alarm through the main pressure pipe, eliminating the need for staff to go to the site to conduct one-by-one ventilation inspections on the gas detection alarms, improving the inspection efficiency of the gas detection alarms and enhancing the safety.

[0059] The above embodiments are only exemplary embodiments of the present utility model and are not used to limit the present utility model. The protection scope of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present utility model within the essence and protection scope of the present utility model, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present utility model.

Claims

1. A gas detection alarm calibration system, characterized in that, Comprising: A standard gas cylinder, disposed in the calibration area; A main pressure guiding pipe, one end of the main pressure guiding pipe is connected to the standard gas cylinder, when the main pressure guiding pipe is communicated with the standard gas cylinder, the gas in the standard gas cylinder automatically flows into the main pressure guiding pipe; Wherein, the main pressure guiding pipe is connected to the measurable area of the detection sensor in the gas detection alarm.

2. The gas detection alarm calibration system according to claim 1, characterized in that, A standard gas two-way three-way solenoid valve is arranged between the standard gas cylinder and the main pressure guiding pipe, the standard gas two-way three-way solenoid valve is connected to the main pressure guiding pipe through port B, the standard gas two-way three-way solenoid valve is connected to the standard gas cylinder through port P, wherein, the standard gas cylinder is connected to port P of the standard gas two-way three-way solenoid valve through a standard gas cylinder pressure reducing valve.

3. The gas detection alarm calibration system according to claim 2, wherein When the standard gas two-way three-way solenoid valve is powered on, port B and port P of the standard gas two-way three-way solenoid valve are communicated, so that the main pressure guiding pipe and the standard gas cylinder are communicated.

4. The gas detection alarm calibration system according to claim 2 or 3, characterized in that, The standard gas two-way three-way solenoid valve is externally connected to an instrument air source through port A.

5. The gas detection alarm calibration system according to claim 4, wherein Between the standard gas two-way three-way solenoid valve and the instrument air source, a two-way two-way instrument solenoid valve, a filter pressure reducing valve, a one-way valve, and a DN20 ball valve are sequentially arranged.

6. The gas detection alarm calibration system according to claim 1, wherein, The other end of the main pressure guiding pipe is connected to the venting place.

7. The gas detection alarm calibration system according to claim 6, wherein, A two-way two-way venting solenoid valve is arranged at the position of the main pressure guiding pipe at the venting place.

8. The gas detection alarm calibration system according to claim 1, wherein, The gas detection alarm calibration system further comprises: At least one pressure guiding pipe branch, one end of the pressure guiding pipe branch is connected to the main pressure guiding pipe.

9. The gas detection alarm calibration system according to claim 8, characterized in that, A two-way two-way calibration solenoid valve is arranged on the pressure guiding pipe branch, when the two-way two-way calibration solenoid valve is powered on, the main pressure guiding pipe is communicated with the pressure guiding pipe branch.

10. The gas detection alarm calibration system according to claim 9, characterized in that, The other end of the pressure guiding pipe branch is arranged in the measurable area of the detection sensor in the gas detection alarm, so that the main pressure guiding pipe is connected to the measurable area of the detection sensor in the gas detection alarm; Wherein, when the main pressure guiding pipe is communicated with the pressure guiding pipe branch, the gas in the main pressure guiding pipe flows into the pressure guiding pipe branch, and then the gas in the main pressure guiding pipe is transmitted to the measurable area of the detection sensor in the gas detection alarm through the pressure guiding pipe branch.

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