Plug water stop device for water injection test

Abstract

The utility model discloses a plug water stop device for a water injection test, which comprises a test section pipe, two ends of the test section pipe are respectively and fixedly connected with an upper water stop plug and a lower water stop plug, the upper water stop plug is communicated with a support pipe, the support pipe is connected with a water delivery structure, and the lower water stop plug is communicated with a lower water stop plug. Upper water inlet chambers and lower moving chambers are formed in the upper water stop plug and the lower water stop plug, moving seat plates are fixedly connected to the bottoms of the supporting pipe and the test section pipe, the outer plugging bag body is limited in the vertical direction, it is guaranteed that expansion of the outer plugging bag body in the vertical direction is reduced, the transverse expansion plugging degree is enhanced, and the sealing performance of the outer plugging bag body is improved. In addition, in the retraction process, a magnetic attraction block and an electromagnet can be used for driving a soft blocking shell to assist the outer plugging bag body in rapid retraction, the dragging force generated when the outer plugging bag body retracts is enhanced, and the phenomenon that the outer plugging bag body is clamped in the retraction process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to geological engineering survey equipment technical field, concretely is a kind of plug water stop device for water injection test. BACKGROUND

[0002] Water injection test is important technical means in hydrogeological survey and groundwater research, is widely used in the determination of groundwater flow characteristics, permeability and hydraulic conductivity coefficient etc.Parameter.Water injection test is the key equipment of water injection test, especially the water stop plug in high-pressure water injection test, the water injection test result is greatly influenced by the water stop plug water effect.

[0003] At present, the water stop plug used has double-pipe circulation type, single-pipe top pressure type, water pressure type, oil pressure type and air pressure type etc.Single-pipe top pressure type rubber plug is the most widely used equipment in the water and electricity water conservancy industry, has the advantages of simple structure, easy operation, but there is not ideal closed, especially in the case of soft rock stratum or relatively broken stratum borehole wall is not complete, prone to hole accident, rubber plug over-deformation causes to be stuck in hole, water stop plug is easily stuck phenomenon, therefore a kind of plug water stop device for water injection test is proposed. UTILITY MODEL CONTENT

[0004] The purpose of the application is to provide a plug water stop device for water injection test to solve the problems raised in the background art.

[0005] Technical scheme, to achieve the above object, the utility model provides a kind of plug water stop device for water injection test, the device includes test section pipe 15, the both ends of test section pipe 15 are fixedly connected with upper water stop plug 14 and lower water stop plug 16, the upper water stop plug 14 is connected with support pipe 13, the support pipe 13 is connected with water delivery structure, the inside of upper water stop plug 14 and lower water stop plug 16 is all set with upper water inlet chamber 141 and lower mobile chamber 142;

[0006] The bottom of support pipe 13 and test section pipe 15 is fixedly connected with mobile seat plate 132, the mobile seat plate 132 connected with support pipe 13 is slidably connected in the lower mobile chamber 142 inside the inside of upper water stop plug 14, and the mobile seat plate 132 connected with test section pipe 15 is slidably connected in the lower mobile chamber 142 inside the inside of lower water stop plug 16;

[0007] The outer part of the upper water stop plug 14 and the lower water stop plug 16 is fixedly connected with an outer storage shell 20, the inner part of the outer storage shell 20 is integrally formed with an outer sealing capsule 21, the inner part of the upper water stop plug 14 and the lower water stop plug 16 is provided with a water inlet and outlet groove 143, and the water inlet and outlet groove 143 is communicated with the outer sealing capsule 21.

[0008] The outer part of the outer storage shell 20 is hingedly connected with a soft blocking shell 22, the opening end of the soft blocking shell 22 is fixedly connected with the side, away from the outer sealing capsule 21, of the outer storage shell 20, the outer part of the support pipe 13 is fixedly connected with an upper sliding sealing gasket 131, the outer part of the test section pipe 15 is fixedly connected with a lower sliding sealing gasket 1311, the upper sliding sealing gasket 131 is slidingly connected in the upper water inlet chamber 141 in the inner part of the upper water stop plug 14, and the lower sliding sealing gasket 1311 is slidingly connected in the upper water inlet chamber 141 in the inner part of the lower water stop plug 16.

[0009] Further, the side, away from the outer sealing capsule 21, of the soft blocking shell 22 is integrally formed with a plurality of soft friction reverse ratchet plates 23.

[0010] Further, the inner part of the soft blocking shell 22 is integrally formed with a placing cavity, the inner part of the placing cavity is filled with an electrorheological fluid filling layer 30, the inner part of the electrorheological fluid filling layer 30 is connected with an electrified wire, and the electrified wire is connected with an external power supply.

[0011] Further, the inner part of the soft blocking shell 22 is integrally formed with a plurality of magnetic attraction blocks 40.

[0012] Further, the side, close to the outer sealing capsule 21, of the outer storage shell 20 is fixedly connected with an electromagnet 41.

[0013] Further, the water inlet and outlet grooves 143 in the inner part of the upper water stop plug 14 and the lower water stop plug 16 are communicated with a shunt pipe 50, the water inlet end of the shunt pipe 50 is communicated with the water inlet and outlet groove 143 in the inner part of the upper water stop plug 14, and the water outlet end of the shunt pipe 50 is communicated with the water inlet and outlet groove 143 in the inner part of the lower water stop plug 16.

[0014] Further, the water conveying structure comprises a conveying valve 12, the conveying valve 12 is communicated with the upper end of the support pipe 13, one end of the conveying valve 12, away from the support pipe 13, is communicated with a conveying pipe 11, and the other end of the conveying pipe 11, away from the conveying valve 12, is communicated with a water pump 10.

[0015] Beneficial effects, compared with the prior art, beneficial technical effects of the utility model are:

[0016] In the technical scheme of the present application, the water flow is continuously injected into the interiors of the two outer sealing capsules, so that the upper and lower outer sealing capsules are expanded, and the test section pipe is located in the sealing section formed by the upper and lower outer sealing capsules to perform the water injection test, during the water injection test, the outer sealing capsule is not only bottomed by the soft blocking shell and the electrorheological liquid filling layer in the upward and downward directions to limit the upward and downward directions of the outer sealing capsule, so as to reduce the expansion of the outer sealing capsule in the upward and downward directions and strengthen the lateral expansion sealing degree, but also can be quickly retracted by the soft blocking shell driven by the magnetic block and the electromagnet to strengthen the dragging force of the outer sealing capsule during the retraction, so as to avoid the phenomenon that the outer sealing capsule is stuck during the retraction. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the present application;

[0018] Figure 2 It is a partial sectional view structural schematic view of the present application;

[0019] Figure 3 It is a structural schematic view of the expansion state of the outer sealing capsule in the present application;

[0020] Figure 4 It is a structural schematic view of the B area in the present application; Figure 3

[0021] Figure 5 It is a structural schematic view of the electrorheological liquid filling layer in the present application;

[0022] Figure 6 It is a structural schematic view of the A area in the present application; Figure 5

[0023] Figure 7 It is a structural schematic view of the electromagnet and the outer storage shell in the present application.

[0024] In the drawing: 10, water pump; 11, conveying pipe; 12, conveying valve; 13, support pipe; 131, upper sliding sealing gasket; 1311, lower sliding sealing gasket; 132, moving seat plate; 14, upper stop water plug; 141, upper water inlet chamber; 142, lower moving chamber; 143, water inlet and outlet groove; 15, test section pipe; 16, lower stop water plug; 20, outer storage shell; 21, outer sealing capsule; 22, soft blocking shell; 23, soft friction reverse ratchet plate; 30, electrorheological liquid filling layer; 40, magnetic block; 41, electromagnet; 50, shunt pipe. DETAILED DESCRIPTION

[0025] ​​Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-7 The utility model provides a kind of plug water stop device for water injection test, the device includes test section pipe 15, the both ends of the test section pipe 15 are respectively fixedly connected with upper water stop plug 14 and lower water stop plug 16, the upper water stop plug 14 is communicated with support pipe 13, the support pipe 13 is connected with water delivery structure, the inside of the upper water stop plug 14 and the lower water stop plug 16 is all provided with upper water inlet chamber 141 and lower moving chamber 142;

[0027] The bottom of the support pipe 13 and the test section pipe 15 is fixedly connected with moving seat plate 132, the moving seat plate 132 connected with the support pipe 13 is slidingly connected in the lower moving chamber 142 inside the upper water stop plug 14, and the moving seat plate 132 connected with the test section pipe 15 is slidingly connected in the lower moving chamber 142 inside the lower water stop plug 16.

[0028] The outside of the upper water stop plug 14 and the lower water stop plug 16 is fixedly connected with outer storage shell 20, the inside of the outer storage shell 20 is integrally formed with outer sealing capsule 21, the inside of the upper water stop plug 14 and the lower water stop plug 16 is provided with water inlet and outlet groove 143, and the water inlet and outlet groove 143 is communicated with the outer sealing capsule 21.

[0029] The outside of the outer storage shell 20 is hinged with soft blocking shell 22, the opening end of the soft blocking shell 22 is fixedly connected with the side of the outer sealing capsule 21 away from the outer storage shell 20, the outside of the support pipe 13 is fixedly connected with upper sliding sealing gasket 131, the outside of the test section pipe 15 is fixedly connected with lower sliding sealing gasket 1311, the upper sliding sealing gasket 131 is slidingly connected in the upper water inlet chamber 141 inside the upper water stop plug 14, and the lower sliding sealing gasket 1311 is slidingly connected in the upper water inlet chamber 141 inside the lower water stop plug 16.

[0030] Further, the side of the soft blocking shell 22 away from the outer sealing capsule 21 is integrally formed with a plurality of soft friction reverse ratchet plates 23.

[0031] Further, the soft blocking shell 22 is integrally formed with a placement cavity in the interior, the placement cavity is filled with an electrorheological fluid filling layer 30, the electrorheological fluid filling layer 30 is connected with an electrified wire in the interior, and the electrified wire is connected with an external power supply.

[0032] Further, the soft blocking shell 22 is integrally formed with a plurality of magnetic attraction blocks 40 in the interior.

[0033] Further, the external storage shell 20 is fixedly connected with an electromagnet 41 on one side close to the external blocking bladder 21.

[0034] Further, the inlet and outlet grooves 143 in the interiors of the upper and lower stop plugs 14 and 16 are all communicated with a shunt pipe 50, the water inlet end of the shunt pipe 50 is communicated with the inlet and outlet groove 143 in the upper stop plug 14, and the water outlet end of the shunt pipe 50 is communicated with the inlet and outlet groove 143 in the lower stop plug 16.

[0035] Further, the water conveying structure comprises a conveying valve 12, the conveying valve 12 is communicated with the upper end of the support pipe 13, one end of the conveying valve 12 away from the support pipe 13 is communicated with a conveying pipe 11, and one end of the conveying pipe 11 away from the conveying valve 12 is communicated with a water pump 10.

[0036] Specifically, in use, the upper stop plug 14, the test section pipe 15 and the lower stop plug 16 are inserted into the test hole, then the water pump 10 is started to continuously inject external water flow into the interior of the conveying pipe 11, the conveying pipe 11 continuously injects water flow into the interior of the conveying valve 12, the water flow enters the interior of the support pipe 13, the water flow continuously enters the interior of the upper water inlet chamber 141, the water flow enters the external blocking bladder 21 in the external storage shell 20 outside the upper stop plug 14 through the inlet and outlet groove 143, the external blocking bladder 21 in the external storage shell 20 outside the upper stop plug 14 expands when the water flow enters, the water flow flows into the external blocking bladder 21 in the external storage shell 20 outside the lower stop plug 16 through the shunt pipe 50, and the external blocking bladder 21 in the external storage shell 20 outside the lower stop plug 16 also expands when the water flow continuously enters the external blocking bladder 21 in the external storage shell 20 outside the lower stop plug 16, and the test hole can be blocked when the external blocking bladder 21 expands.

[0037] As Figure 2As shown, the water inlet and outlet groove 143 inside the upper water stop plug 14 and the lower water stop plug 16 are both communicated with the shunt pipe 50.

[0038] Specifically, when the water flow enters the support pipe 13, the water flow continuously enters the upper water inlet chamber 141, and when the water flow enters the upper water inlet chamber 141, the water flow enters the outer sealing balloon 21 inside the outer storage shell 20 outside the upper water stop plug 14 through the water inlet and outlet groove 143, and when the water flow enters the outer sealing balloon 21 inside the outer storage shell 20 outside the upper water stop plug 14, the outer sealing balloon 21 inside the outer storage shell 20 outside the upper water stop plug 14 expands, and at the same time, the water flow flows into the outer sealing balloon 21 inside the outer storage shell 20 outside the lower water stop plug 16 through the shunt pipe 50, and when the water flow continuously enters the outer sealing balloon 21 inside the outer storage shell 20 outside the lower water stop plug 16, the outer sealing balloon 21 inside the outer storage shell 20 outside the lower water stop plug 16 also expands, thereby sealing the upper and lower parts of the test section pipe 15, forming a double-layer sealing, and further increasing the accuracy during the water injection test.

[0039] Further, the soft blocking shell 22 has lower extension than the outer sealing balloon 21, and during the drainage process, the water flow inside the outer sealing balloon 21 is gradually drained, and when the water flow inside the outer sealing balloon 21 is gradually drained, the outer sealing balloon 21 shrinks, and when the outer sealing balloon 21 is in the shrinking state, the soft blocking shell 22 outside the outer sealing balloon 21 pulls the outer sealing balloon 21 back to the inside of the outer storage shell 20, reducing the phenomenon that the outer sealing balloon 21 is clamped at a certain position after expansion to form a seal.

[0040] Specifically, as shown in FIG. 6, the outer sealing balloon 21 inside the outer storage shell 20 outside the upper water stop plug 14 is in the state of expansion, and the outer sealing balloon 21 inside the outer storage shell 20 outside the lower water stop plug 16 is also in the state of expansion. Figure 4As shown, the soft blocking shell 22 has multiple soft friction-adjusting ratchet plates 23 integrally formed on the side away from the outer sealing bladder 21. Through the arrangement of these multiple soft friction-adjusting ratchet plates 23, when the outer sealing bladder 21 expands to seal the test hole, the soft blocking shell 22 will change position as the outer sealing bladder 21 expands. Furthermore, when the soft blocking shell 22 also contacts the inner wall of the test hole, the soft friction-adjusting ratchet plates 23 further increase the friction between the soft blocking shell 22 and the test hole wall, thereby improving the friction during the expansion of the outer sealing bladder 21. To further reduce the excessive expansion of the outer sealing bladder 21, the expansion degree of the outer sealing bladder 21 is limited to a controllable range, reducing the phenomenon of excessive jamming caused by excessive expansion of the outer sealing bladder 21. At the same time, the setting of the soft blocking shell 22 can support the outer sealing bladder 21 when it expands, reducing the phenomenon of excessive downward expansion of the outer sealing bladder 21. Thus, the expansion direction of the outer sealing bladder 21 is concentrated in the lateral expansion direction, thereby ensuring that the outer sealing bladder 21 can completely seal the test hole when it expands, reducing the phenomenon of leaving gaps.

[0041] like Figure 5 As shown, the soft barrier housing 22 has an integrally formed placement cavity inside, which is filled with an electrorheological fluid filling layer 30. An electric conductor (not shown in the figure) is connected inside the electrorheological fluid filling layer 30 and is connected to an external power source.

[0042] Specifically, considering that the soft barrier shell 22 is made of a relatively soft material and cannot increase the friction between the soft barrier shell 22 and the hole when it does not come into contact with the hole, the soft barrier shell 22 is filled with an electrorheological fluid filling layer 30. When the soft barrier shell 22 is fully extended and does not come into contact with the inner wall of the hole, the electrorheological fluid filling layer 30 can be energized by an external power-conducting wire to harden the electrorheological fluid filling layer 30. The hardened electrorheological fluid filling layer 30 drives the soft barrier shell 22 to harden, forming a hardened support for the external sealing shell 21.

[0043] like Figure 6 As shown, the soft blocking shell 22 has multiple magnetic blocks 40 integrally formed inside. The magnetic blocks 40 can attract the upper water stop plug 14 and the lower water stop plug 16 when the outer sealing bladder 21 shrinks, which helps the outer sealing bladder 21 to retract to its original position and reduces the phenomenon of being stuck.

[0044] like Figure 7As shown, the outer storage shell 20 is fixedly connected with an electromagnet 41 on the side close to the outer blocking capsule 21, and through the setting of the electromagnet 41, the electromagnet 41 can be opened to magnetically attract the magnetic block 40 when the outer blocking capsule 21 is contracted, thereby further assisting the magnetic block 40 to drive the soft blocking shell 22 and the outer blocking capsule 21 to retract to the original position.

[0045] As Figure 1 As shown, the water conveying structure comprises a conveying valve 12, the conveying valve 12 is communicated with the upper end of the support pipe 13, the conveying valve 12 is communicated with a conveying pipe 11 away from the support pipe 13, the conveying pipe 11 is communicated with a water pump 10 away from the conveying valve 12, in the process of testing, the water flow is conveyed to the inside of the conveying pipe 11 through the water pump 10, and the water flow is conveyed to the inside of the conveying valve 12 through the conveying pipe 11, and the water flow is conveyed to the inside of the support pipe 13 through the conveying valve 12.

[0046] According to the above technical scheme, the working steps of the device are as follows:

[0047] In the process of use, by continuously injecting water flow into the inside of the two outer blocking capsules 21, the upper and lower outer blocking capsules 21 are expanded, and the blocking section is formed by the upper and lower outer blocking capsules 21, and the test section pipe 15 is located in the blocking section for water injection test, in the process of water injection test, the outer blocking capsule 21 can be bottomed up by the soft blocking shell 22 and the electrorheological fluid filling layer 30 under the condition of expansion, the upward and downward directions of the outer blocking capsule 21 are limited, the expansion of the outer blocking capsule 21 in the upward and downward directions is reduced, the transverse expansion blocking degree is strengthened, and the outer blocking capsule 21 can be quickly retracted by the soft blocking shell 22 driven by the magnetic block 40 and the electromagnet 41 in the retraction process, the dragging force of the outer blocking capsule 21 during retraction is strengthened, and the phenomenon that the outer blocking capsule 21 is stuck during retraction is avoided.

[0048] The parts not involved in the utility model are the same as or can be realized by the prior art. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An embolus water-stopping device for water injection test, which comprises a test section pipe (15), the two ends of the test section pipe (15) are fixedly connected with an upper water-stopping embolus (14) and a lower water-stopping embolus (16) respectively, the upper water-stopping embolus (14) is communicated with a support pipe (13), and the support pipe (13) is connected with a water delivery structure, characterized in that, The upper water stop plug (14) and the lower water stop plug (16) are internally provided with an upper water inlet chamber (141) and a lower moving chamber (142); The bottom of the support pipe (13) and the test section pipe (15) is fixedly connected with a moving seat plate (132), the moving seat plate (132) connected with the support pipe (13) is slidingly connected in the lower moving chamber (142) inside the upper water stop plug (14), and the moving seat plate (132) connected with the test section pipe (15) is slidingly connected in the lower moving chamber (142) inside the lower water stop plug (16); The outer storage shell (20) is fixedly connected with an outer storage shell (20), and the outer storage shell (20) is integrally formed with an outer sealing capsule (21) in the inside. The upper water stop plug (14) and the lower water stop plug (16) are internally provided with a water inlet and outlet groove (143), and the water inlet and outlet groove (143) is communicated with the outer sealing capsule (21).

2. The plug water stop device for water injection test according to claim 1, characterized in that, The outer storage shell (20) is hingedly connected with a soft blocking shell (22), and the opening end of the soft blocking shell (22) is fixedly connected with the side, away from the outer storage shell (20), of the outer sealing capsule (21). The outer side of the support pipe (13) is fixedly connected with an upper sliding sealing gasket (131), and the outer side of the test section pipe (15) is fixedly connected with a lower sliding sealing gasket (1311). The upper sliding sealing gasket (131) is slidingly connected in the upper water inlet chamber (141) inside the upper water stop plug (14), and the lower sliding sealing gasket (1311) is slidingly connected in the upper water inlet chamber (141) inside the lower water stop plug (16).

3. An embolic occlusion device for use in waterflood testing according to claim 2, wherein, The side, away from the outer sealing capsule (21), of the soft blocking shell (22) is integrally formed with a plurality of soft friction reverse ratchet plates (23).

4. The plug water stop device for water injection test according to claim 2, characterized in that, The inside of the soft blocking shell (22) is integrally formed with a placing cavity, and the inside of the placing cavity is filled with an electrorheological fluid filling layer (30). The inside of the electrorheological fluid filling layer (30) is connected with an electrified wire, and the electrified wire is connected with an external power supply.

5. The plug water stop device for water injection test according to claim 2, characterized in that, The inside of the soft blocking shell (22) is integrally formed with a plurality of magnetic attraction blocks (40).

6. The packer of claim 1, wherein: The side, close to the outer sealing capsule (21), of the outer storage shell (20) is fixedly connected with an electromagnet (41).

7. The packer of claim 1, wherein: The water inlet and outlet grooves (143) inside the upper water stop plug (14) and the lower water stop plug (16) are communicated with a shunt pipe (50). The water inlet end of the shunt pipe (50) is communicated with the water inlet and outlet groove (143) inside the upper water stop plug (14), and the water outlet end of the shunt pipe (50) is communicated with the water inlet and outlet groove (143) inside the lower water stop plug (16).

8. The plug water stop device for water injection test according to claim 1, characterized in that, The water conveying structure comprises a conveying valve (12), the conveying valve (12) is communicated with the upper end of the support pipe (13), one end of the conveying valve (12), away from the support pipe (13), is communicated with a conveying pipe (11), and the other end of the conveying pipe (11), away from the conveying valve (12), is communicated with a water pump (10).

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