Combustible gas interlocking protection device

Abstract

The utility model relates to the technical field of combustible gas monitoring, and particularly discloses a combustible gas interlocking protection device which comprises a three-way pipe fixed outside a gas pipeline through a buckling type ring seat, gas guide pipes are communicated and installed at the two ends of the three-way pipe, and a plurality of gas suction holes are formed in the surfaces of the gas guide pipes at equal intervals. The top end of the three-way pipe is communicated with an axial flow exhaust fan, the output end of the axial flow exhaust fan is communicated with a buffer air guide box, and the top of the buffer air guide box is provided with a combustible gas alarm. According to the device, the gas guide pipe, the three-way pipe and the axial flow exhaust fan are arranged on the route laid along the fuel gas pipeline, so that when leakage occurs at any position on the route along the fuel gas pipeline, leaked gas can be actively guided to the position near the combustible gas alarm through the gas guide pipe, the three-way pipe and the axial flow exhaust fan, and therefore alarm protection is conducted; the cost that a plurality of combustible gas alarms need to be arranged for monitoring gas pipelines along the way traditionally is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to combustible gas monitoring technical field, concretely relates to a combustible gas interlock protection device. BACKGROUND

[0002] Combustible gas interlock protection is an important measure to guarantee the safety of industrial and civil places, and its core is to rapidly cut off the gas source and start emergency measures through automatic control means when detecting combustible gas leakage. Combustible gas detector: real-time monitoring of combustible gas concentration in the environment, and sending an alarm signal when the concentration reaches the preset threshold. Emergency shut-off electromagnetic valve: installed on the gas pipeline, automatically closes the valve and cuts off the gas source after receiving the detector signal. Alarm device: including a sound and light alarm, informing personnel to take emergency measures. In order to ensure the timeliness of gas pipeline leakage monitoring, multiple combustible gas detectors need to be installed along the route of the gas pipeline to ensure fast response speed, but such investment cost is high and needs to be improved. Therefore, we propose a combustible gas interlock protection device. SUMMARY

[0003] In view of the above technical problems in the related art, the utility model provides a combustible gas interlock protection device, which can solve the above problems.

[0004] To achieve the above technical purposes, the technical scheme of the utility model is as follows:

[0005] A combustible gas interlock protection device, comprising a tee pipe fixed to the outside of a gas pipeline through a snap-on ring seat, a gas guide pipe is installed at both ends of the tee pipe, a plurality of air inlet holes are equidistantly arranged on the surface of the gas guide pipe, an axial flow air extractor is installed at the top end of the tee pipe, a buffer air guide box is installed at the output end of the axial flow air extractor, and a combustible gas alarm is arranged at the top of the buffer air guide box.

[0006] Further, a plurality of mutually parallel inclined plates A and B are arranged alternately on the inner wall of the buffer air guide box, the bottom end of the inclined plate A is fixedly connected with the left inner wall of the buffer air guide box, and the top end of the inclined plate B is fixedly connected with the right inner wall of the buffer air guide box.

[0007] Further, reinforcing rib plates are fixedly arranged at the top of the inclined plate A and the bottom of the inclined plate B, and the reinforcing rib plates are fixed to the inner wall of the buffer air guide box.

[0008] Further, a gauze cover is arranged outside the gas guide pipe.

[0009] Further, the distance between adjacent two air inlet holes is 50cm-60cm.

[0010] Further, the buckle type ring seat comprises an upper half ring and a lower half ring, one end of the upper half ring and the lower half ring is hingedly matched through a hinge, and the other end of the upper half ring and the lower half ring is fastened and connected through a bolt, and the tee pipe is fixed to the upper half ring of the buckle type ring seat.

[0011] The device has the advantages that when leakage occurs at any position along the pipeline, the leaked gas can be actively guided to the vicinity of the combustible gas alarm through the air guide pipe, the tee pipe and the axial flow air extractor, thereby performing alarm protection, indirectly improving the leakage alarm response time, and reducing the cost of monitoring the pipeline along the way by laying multiple combustible gas alarms. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0013] The present application will be further described in detail with reference to the drawings.

[0014] Fig. 1 is a structural schematic view of a combustible gas interlocking protection device;

[0015] Fig. 2 is a structural schematic view of an air guide pipe externally equipped with a gauze cover;

[0016] Fig. 3 is a sectional view of a buffer air guide box.

[0017] In the drawings:

[0018] 1, buffer air guide box; 2, axial flow air extractor; 3, tee pipe; 4, air guide pipe; 401, air inlet hole; 5, gas pipeline; 6, buckle type ring seat; 7, combustible gas alarm; 8, back plate; 9, gauze cover; 10, inclined plate A; 11, inclined plate B. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0020] As Figs. 1-3As shown, the utility model discloses a kind of combustible gas interlock protection devices, including the tee pipe 3 of being fixed to the outside of gas pipeline 5 by snap-on ring seat 6, tee pipe 3 both ends are connected and installed with air duct 4, air duct 4 surface equidistantly is provided with several suction holes 401, tee pipe 3 top end is connected and installed with axial flow fan 2, the output end of axial flow fan 2 is connected and installed with buffer air funnel 1, buffer air funnel 1 top is provided with combustible gas alarm 7.

[0021] Example one: buffer air funnel 1 outside is fixedly provided with backplate 8, combustible gas alarm 7 is fixed on backplate 8 by bolt, tee pipe 3 is fixed to the outside of gas pipeline 5 by snap-on ring seat 6, rubber washer is arranged in the inner wall of snap-on ring seat 6 to increase installation stability, the length of air duct 4 is set as 3m, air duct 4 is wrapped with gauze cover 9 and then is bound to the outside of gas pipeline 5 by tie, the bottom of axial flow fan 2 is air inlet, and the top is air outlet, the bottom of axial flow fan 2 is connected with the top end of tee pipe 3, the output end of axial flow fan 2 is tightly matched with the bottom of buffer air funnel 1, the inner wall of buffer air funnel 1 is staggered and provided with several mutually parallelly arranged inclined plates A10, inclined plate B11, for buffering the airflow of axial flow fan 2 blowing, so that the gas detection sensor of combustible gas alarm 7 can have time to monitor the gas inhaled from each suction hole 401 of air duct 4, combustible gas alarm 7 monitors the combustible gas concentration in environment in real time, when concentration reaches preset threshold, alarm signal is sent, while combustible gas alarm 7 is connected with PLC controller, when concentration reaches preset threshold, alarm signal is sent while emergency shut-off electromagnetic valve, electromagnetic valve is installed on gas pipeline, after receiving PLC controller signal, automatically closes valve, cuts off gas source, reaches the effect of combustible gas interlock protection, based on existing combustible gas alarm 7 in this embodiment, air duct 4, tee pipe 3 and axial flow fan 2 are additionally provided, can greatly increase the leakage gas monitoring range of single combustible gas alarm 7, while there is airflow to guide leakage gas to reach combustible gas alarm 7, can indirectly improve leakage alarm response time.

[0022] In the preferred technical scheme, the inner wall of buffer air funnel 1 is staggered and provided with several mutually parallelly arranged inclined plates A10, inclined plate B11, the bottom end of inclined plate A10 is fixedly connected with the left inner wall of buffer air funnel 1, the top end of inclined plate B11 is fixedly connected with the right inner wall of buffer air funnel 1, several mutually parallelly arranged inclined plates A10, inclined plate B11, for buffering the airflow of axial flow fan 2 blowing, so that the gas detection sensor of combustible gas alarm 7 can have time to monitor the gas inhaled from each suction hole 401 of air duct 4.

[0023] In the preferred technical solution, the top of the inclined plate A10 and the bottom of the inclined plate B11 are fixedly provided with reinforcing rib plates, the reinforcing rib plates are fixed to the inner wall of the buffer air guide box 1, and the reinforcing rib plates are used to improve the wind resistance of the inclined plate A10 and the inclined plate B11.

[0024] In the preferred technical solution, the gas guide pipe 4 is externally sleeved with a gauze cover 9, the gauze cover 9 is used to filter large-particle foreign matters in the environment and avoid blocking the air suction holes 401 of the gas guide pipe 4.

[0025] In the preferred technical solution, the interval between two adjacent air suction holes 401 is 50cm-60cm, and the interval is set to reasonably monitor the gas leakage of the gas pipeline 5 along the laying route.

[0026] In the preferred technical solution, the buckle type ring seat 6 comprises an upper half ring and a lower half ring, one end of the upper half ring and the lower half ring is hingedly matched through a hinge, the other end of the upper half ring and the lower half ring is fastened and connected through a bolt, the tee pipe 3 is fixed to the upper half ring of the buckle type ring seat 6, the upper half ring and the lower half ring are unfolded to wholly sleeve the buckle type ring seat 6 outside the gas pipeline 5, the upper half ring and the lower half ring are fastened through the bolt, so that the tee pipe 3 is fixed outside the gas pipeline 5.

[0027] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A combustible gas interlock protection device, characterized by, Including through the buckle type ring seat (6) fixed in the gas pipeline (5) outside the tee pipe (3), both ends of the tee pipe (3) are communicated and installed with the air guide pipe (4), the air guide pipe (4) surface equidistantly opens with several air suction holes (401), the tee pipe (3) top end is communicated and installed with the axial flow fan (2), the output end of the axial flow fan (2) is communicated and installed with the buffer air guide box (1), the buffer air guide box (1) top is provided with the combustible gas alarm (7).

2. A combustible gas interlock protection device according to claim 1, characterised in that, The inner wall of the buffer air guide box (1) is staggered and provided with a plurality of inclined plates A (10) and inclined plates B (11) arranged parallel to each other, the bottom end of the inclined plate A (10) is fixedly connected with the left inner wall of the buffer air guide box (1), and the top end of the inclined plate B (11) is fixedly connected with the right inner wall of the buffer air guide box (1).

3. A combustible gas interlock protection device according to claim 2, characterised in that, The top of the inclined plate A (10) and the bottom of the inclined plate B (11) are both fixedly provided with a reinforcing rib plate, and the reinforcing rib plate is fixed to the inner wall of the buffer air guide box (1).

4. A combustible gas interlock protection device according to claim 1, wherein The air guide pipe (4) is externally sleeved with a gauze cover (9).

5. A combustible gas interlock protection device according to claim 1, wherein The spacing between adjacent two air suction holes (401) is 50cm-60cm.

6. A combustible gas interlock protection device according to claim 1, wherein The buckle type ring seat (6) comprises an upper half ring and a lower half ring, one end of the upper half ring and the lower half ring is hingedly connected, the other end of the upper half ring and the lower half ring is fastened and connected by bolts, and the tee pipe (3) is fixed to the upper half ring of the buckle type ring seat (6).

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