CN202063916U - Biogas Safety Pressure Limiting Valve - Google Patents

Abstract

The utility model discloses a biogas safety pressure-limiting valve, which comprises a pressure-limiting exhaust pipe and an open container filled with water. One end of the pressure-limiting exhaust pipe communicates with the gas storage chamber of the biogas pool, and the other end extends into the opening. Under the water surface in the container; connect the gas storage chamber of the biogas tank with the utility model, use the water seal function of the open container to limit the biogas pressure in the biogas tank, when the biogas pressure is within the control range, rely on the function of the water seal to seal Biogas, when the biogas pressure is too high, the water seal fails, and the biogas escapes from the open container, which reduces the biogas pressure in the pool, maintains the normal biogas pressure, and prevents safety accidents such as explosions caused by excessive biogas pressure in the pool; , the utility model is installed at the bottom of the biogas pipeline, and the condensed water in the biogas pipeline can also be collected, which not only replenishes water for the open container, but also prevents the condensed water from entering the desulfurizer; the utility model can use waste and old Made of plastic bottles, the production is simple, the cost is low, and the service life is long.

Description

The biogas safety pressure-limiting valve

Technical field

The utility model relates to a kind of safety valve, is specifically related to a kind of biogas safety pressure-limiting valve.

Background technology

Methane-generating pit all should be installed safety valve, to prevent the too high security incidents such as blast that cause of biogas pressure in the pond, damages the equipment and the accessory of biogas.Existing safety valve all is a metal valve body, utilizes spring to regulate pressure, complicate fabrication process, and cost is higher, and because steam and sulphur are to corrosion of metal in the biogas, the life-span of safety valve is generally all shorter.

Therefore, need a kind of easy safety valve of design, can effectively limit the biogas pressure in the methane-generating pit, and make simply, cost is low, and the life-span is long.

Summary of the invention

In view of this, the utility model provides a kind of biogas safety pressure-limiting valve, can effectively limit the biogas pressure in the methane-generating pit, and makes simply, and cost is low, and the life-span is long.

Biogas safety pressure-limiting valve of the present utility model comprises pressure limiting vapor pipe and the open container that water is housed, and described pressure limiting vapor pipe one end is communicated with the gas dome of methane-generating pit, and the other end stretches into the underwater in the open container.

Further, the end that described pressure limiting vapor pipe stretches into open container is communicated with buffer container, has the air water flow passage on the buffer container, and described buffer container is packed in the open container;

Further, described air water flow passage is positioned at the buffer container bottom;

Further, described open container and buffering container are flask;

Further, described buffer container volume is an open container volumetrical 1/3rd to 1/2nd;

Further, described pressure limiting vapor pipe is communicated with biogas pneumatic tube bottom position.

The beneficial effects of the utility model are: the gas dome of methane-generating pit is communicated with the utility model, utilize the water seal of open container to be used for limiting the interior biogas pressure of methane-generating pit, when biogas pressure is in span of control, rely on the effect sealing biogas of water seal, when biogas pressure was excessive, water seal was lost efficacy, biogas is promptly overflowed from open container, reduce the biogas pressure in the pond, kept normal biogas pressure, prevented the too high security incidents such as blast that cause of biogas pressure in the pond; In addition, the utility model is installed in biogas pneumatic tube bottom position, can also collects the condensed water in the biogas pneumatic tube, both replenished water, prevented that again condensed water from entering devulcanizer to open container; The utility model can utilize waste and old Plastic Bottle to make, and makes simply, and cost is low, and the life-span is long.

Description of drawings

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:

Fig. 1 is a structural representation of the present utility model.

Embodiment

Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.

Fig. 1 is a structural representation of the present utility model, as shown in the figure, biogas safety pressure-limiting valve of the present utility model comprises pressure limiting vapor pipe 1 and the open container 2 that water 3 is housed, described pressure limiting vapor pipe 1 one ends are communicated with the gas dome of methane-generating pit, and the other end stretches into the underwater in the open container 2; Utilize the water seal of open container 2 to be used for limiting the interior biogas pressure of methane-generating pit, when biogas pressure is in span of control, rely on the effect sealing biogas of water seal, when biogas pressure is excessive, water seal was lost efficacy, and biogas is promptly overflowed from open container 2, has reduced the biogas pressure in the pond, keep normal biogas pressure, prevented the too high security incidents such as blast that cause of biogas pressure in the pond.

As further improvement of the utility model, the end that described pressure limiting vapor pipe 1 stretches into open container 2 is communicated with buffer container 4, has air water flow passage 5 on the buffer container 4, and described buffer container 4 is packed in the open container 2; Buffer container 4 is set, can increases water seal height, improve controlled biogas pressure; When biogas pressure rose, the water 3 in the buffer container 4 was discharged from air water flow passage 5, and buffer container 4 inside and outside water level pressure reduction increase, and after 3 emptyings of the water in the buffer container 4, biogas pressure continues to rise, and then water seal was lost efficacy, and biogas is promptly overflowed from open container 2; As need biogas pressure is controlled in a big way, then needs bigger buffer container 4 volumes, but for anti-sealing overflows from open container 2, described buffer container 4 volumes are open container 2 volumetrical 1/3rd to 1/2nd.

In the present embodiment, described air water flow passage 5 is positioned at buffer container 4 bottoms; The volume at air water flow passage 5 positions to buffer container 4 tops is the useful volume of buffer container 4, water in this useful volume could be discharged from air water flow passage 5 under the effect of biogas pressure, therefore, air water flow passage 5 is arranged at buffer container 4 bottoms, the useful volume maximum of buffer container 4.

In the present embodiment, described open container 2 and buffering container 4 are flask; Can utilize waste and old Plastic Bottle to make, as shown in the figure, the Plastic Bottle bottom of a 1.5L be removed, bottleneck seals with bottle stopper, promptly makes open container 2, with the Plastic Bottle bottom opening of a 500 ~ 650ml, bottleneck and pressure limiting vapor pipe 1 are tightly connected, and promptly make buffer container 4; Make simply, cost is low, and the life-span is long.

As further improvement of the utility model, described pressure limiting vapor pipe 1 is communicated with biogas pneumatic tube bottom position; Can collect the condensed water in the biogas pneumatic tube, replenish water both for open container 2, prevent that again condensed water from entering devulcanizer.

Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although by the utility model being described with reference to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and the spirit and scope of the present utility model that do not depart from appended claims and limited.

Claims (6)

1. A biogas safety pressure limiting valve, characterized in that it includes a pressure limiting exhaust pipe (1) and an open container (2) filled with water (3), one end of the pressure limiting exhaust pipe (1) is connected to the biogas The air storage chamber of the pool is communicated, and the other end stretches under the water surface in the open container (2). 2. The biogas safety pressure limiting valve according to claim 1, characterized in that: one end of the pressure limiting exhaust pipe (1) extending into the open container (2) is connected to the buffer container (4), and the buffer container (4 ) is provided with an air-water flow channel (5), and the buffer container (4) is put into the open container (2). 3. The biogas safety pressure limiting valve according to claim 2, characterized in that: the gas-water flow channel (5) is located at the bottom of the buffer container (4). 4. The biogas safety pressure limiting valve according to claim 3, characterized in that: the open container (2) and the buffer container (4) are both bottle-shaped containers. 5. The biogas safety pressure limiting valve according to claim 4, characterized in that: the volume of the buffer container (4) is one-third to one-half of the volume of the open container (2). 6. The biogas safety pressure limiting valve according to any one of claims 1 to 5, characterized in that: the pressure limiting exhaust pipe (1) communicates with the bottom of the biogas transmission pipe.

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