CN209182072U - A kind of anaerobism water storage well head for low yield water coal bed gas well - Google Patents

Abstract

The utility model belongs to coal mine field, propose a kind of anaerobism water storage well head for low yield water coal bed gas well, standpipe including overflow pipe and below overflow pipe, the overflow pipe is in convex-shaped, the standpipe is in lower spill, and the both ends of overflow pipe and standpipe are interconnected and form " returning " shape structure；Total water inlet and total water outlet are located at " going back to " shape structure two sides of overflow pipe and standpipe and communicate therewith；The standpipe is provided with the preceding overflow valve lower than total water inlet close to one end of total water inlet, and the standpipe is provided with the rear overflow valve lower than total water outlet close to one end of total water outlet.The utility model energy anaerobism saves the water outlet of low yield water coal bed gas well, and avoiding contact with air makes its composition change, and reduces sampling time-consuming, and structure is simple, low in cost, easy to operate.

Description

A kind of anaerobism water storage well head for low yield water coal bed gas well

Technical field

The utility model belongs to coal mine field, and in particular to a kind of anaerobism water storage well for low yield water coal bed gas well Mouthful.

Background technique

In coal bed gas well production process, it is often necessary to be sampled to its output water related to carrying out real to be detected Test research.In order to keep detection and experimental result representative, it is desirable to which coal bed gas well water outlet collected can be in composition It is consistent in physicochemical property with subterranean coal water base.Extremely detest it is well known that original subterranean coal water is in one In oxygen environment, contained by chemical analysis be more stable under anaerobic, once coal seam water is exposed in air, institute The chemical component contained is possible to be oxidized, and makes detection and experimental result depleted representation based on the coal seam water.In practical life In production, quite a few coal bed gas well water yield be it is seldom, even high yield water well, with the progress of production, produce Water also can constantly decline and ultimately become low yield water well.The reduction of coal bed gas well water yield, on the one hand causes air to enter Outlet pipeline makes coal bed gas well be discharged ingress of air；On the other hand the acquisition time for increasing water sample, brings for detection and research Inconvenience.

Utility model content

In order to solve low yield water coal bed gas well water outlet ingress of air and the sampling deficiency that time-consuming, the utility model is provided A kind of anaerobism water storage well head, the well head can save the water outlet anaerobism of low yield water well, avoid its ingress of air, acquire water It is directly sampled from standpipe when sample, sampling is rapidly completed.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows: one kind is used for low yield water coal seam The anaerobism water storage well head of gas well, the standpipe including overflow pipe and below overflow pipe, the overflow pipe is in convex-shaped, described Standpipe is in lower spill, and the both ends of overflow pipe and standpipe are interconnected and form " returning " shape structure；Total water inlet and total water outlet Mouth is located at " going back to " shape structure two sides of overflow pipe and standpipe and communicates therewith；The standpipe close to total water inlet one End is provided with the preceding overflow valve lower than total water inlet, and the standpipe is provided with close to one end of total water outlet lower than total water outlet Rear overflow valve.

It is provided on the vertical tube wall of the total water inlet for observing level of the liquid in the tube on the overflow pipe Transparent scale observation window.

The overflow pipe and standpipe are U-tube.

The water storage bottom of the tube is provided with thief hatch, and the thief hatch is for collecting water sample in standpipe.

It is each at standpipe both ends that the utility model has the advantages that the utility model passes through compared with prior art One overflow valve is set, enables the well head anaerobism to save the water outlet of low yield water coal bed gas well, avoiding contact with air makes it Composition changes, and directly samples from standpipe when acquiring water sample, sampling is rapidly completed, and reduces sampling time-consuming, and structure is simple, It is low in cost, it is easy to operate.

Detailed description of the invention

Fig. 1 be the utility model proposes a kind of anaerobism water storage well head for low yield water coal bed gas well structural representation Figure；

In figure: 1 is total water inlet；2 be total water outlet；3 be preceding overflow valve；4 be rear overflow valve；5 be standpipe；6 are Bright scale observation window；7 be sample tap；8 be overflow pipe.

Specific embodiment

It, below will be to the utility model to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Technical solution in embodiment is clearly and completely described, it is clear that described embodiment is a part of the utility model Embodiment, instead of all the embodiments；Based on the embodiments of the present invention, those of ordinary skill in the art are not making Every other embodiment obtained under the premise of creative work out, fall within the protection scope of the utility model.

As shown in Figure 1, the utility model embodiment provides a kind of anaerobism water storage well for low yield water coal bed gas well Mouthful, the standpipe 5 including overflow pipe 8 and positioned at 8 lower section of overflow pipe, the overflow pipe 8 is in convex-shaped, under the standpipe 5 is in Spill, and the both ends of overflow pipe 8 and standpipe 5 are interconnected and form " returning " shape structure；Total water inlet 1 and total water outlet 2 are distinguished Positioned at " returning " shape structure two sides of overflow pipe 8 and standpipe 5 and communicate therewith；The standpipe 5 is close to one end of total water inlet 1 It is provided with the preceding overflow valve 3 lower than total water inlet 1, the standpipe 5 is provided with close to one end of total water outlet 2 lower than total water outlet The rear overflow valve 4 of mouth 2.Wherein, when water inlet hydraulic pressure is greater than setting value, preceding overflow valve 3 allow water from total water inlet unidirectionally into Enter standpipe.When standpipe hydraulic pressure is greater than setting value, rear overflow valve 4 allows water unidirectionally to enter total water outlet from standpipe.

Wherein, it is provided on the vertical tube wall of the total water inlet for liquid level in observation tube on the overflow pipe 8 The position of the transparent scale observation window 6 of height, the transparent scale observation window 6 is higher than the total water inlet.

In the present embodiment, the overflow pipe 8 and standpipe 5 are U-tube.

In addition, 5 bottom of standpipe is provided with thief hatch 7, the thief hatch 7 is for collecting water sample in standpipe 5.

The working principle of the utility model is as follows: slowly filling the water before use, first passing through total water inlet 1, overflows before adjusting setting The pressure for flowing valve 3 and rear overflow valve 4 is observed by transparent scale observation window 6, has been set when the water surface is stablized in default scale At.In use, coal seam water enters via total injection port 1.When the water surface is less than default scale, water stays in 8 vertical pipe of overflow pipe Part, preceding overflow valve 3 and rear overflow valve 4 are closed；When the water surface, which continues to increase, is more than default scale, i.e., hydraulic pressure is more than preceding overflow valve 3 and rear overflow valve 4 setting pressure when, preceding overflow valve 3 and rear overflow valve 4 automatically open, water by preceding overflow valve 3 enter water storage Pipe 5, the water surface is decreased until below default scale in overflow pipe 8, and front and back overflow valve 3 and rear overflow valve 4 are closed；When in standpipe 5 Storing up the page in full water and overflow pipe 8 is more than when presetting scale, and preceding overflow valve 3 and rear overflow valve 4 automatically open, before new water passes through Overflow valve 3 enters standpipe 5, and old water passes sequentially through rear overflow valve 4 and total water outlet 2 is discharged.

The utility model enables the well head anaerobism to save low yield by the way that an overflow valve is respectively arranged at standpipe both ends The water outlet of water coal bed gas well, avoiding contact with air makes its composition change, and reduces sampling time-consuming, structure is simple, cost It is cheap, it is easy to operate.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (4)

1. a kind of anaerobism water storage well head for low yield water coal bed gas well, which is characterized in that including overflow pipe (8) and be located at excessive Standpipe (5) below flow tube (8), the overflow pipe (8) are in convex-shaped, and the standpipe (5) is in lower spill, and overflow pipe (8) it is interconnected with the both ends of standpipe (5) and forms " returning " shape structure；Total water inlet (1) and total water outlet (2) are located at excessive " returning " shape structure two sides of flow tube (8) and standpipe (5) simultaneously communicate therewith；The one of the standpipe (5) close total water inlet (1) End is provided with the preceding overflow valve (3) lower than total water inlet (1), and the standpipe (5) is provided with close to the one end of total water outlet (2) Lower than the rear overflow valve (4) of total water outlet (2).

2. a kind of anaerobism water storage well head for low yield water coal bed gas well according to claim 1, which is characterized in that institute State the transparent scale being provided on the vertical tube wall of the total water inlet on overflow pipe (8) for observing level of the liquid in the tube Observation window (6).

3. a kind of anaerobism water storage well head for low yield water coal bed gas well according to claim 1, which is characterized in that institute Stating overflow pipe (8) and standpipe (5) is U-tube.

4. a kind of anaerobism water storage well head for low yield water coal bed gas well according to claim 1, which is characterized in that institute It states standpipe (5) bottom to be provided with thief hatch (7), the thief hatch (7) is for collecting standpipe (5) interior water sample.