CN210400756U - Shield tail seals withstand voltage detection device - Google Patents
Shield tail seals withstand voltage detection device Download PDFInfo
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- CN210400756U CN210400756U CN201921371536.9U CN201921371536U CN210400756U CN 210400756 U CN210400756 U CN 210400756U CN 201921371536 U CN201921371536 U CN 201921371536U CN 210400756 U CN210400756 U CN 210400756U
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- shield tail
- grease
- protective shell
- water inlet
- shell
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Abstract
The utility model discloses a shield tail sealing pressure-resistant detection device, which comprises a protective shell, a shield tail brush arranged in the protective shell, and a shell cover plate which is arranged above the protective shell and is fixedly connected with the protective shell; a water inlet hole is formed in one side of the protective shell, the water inlet hole is connected with a water inlet pipe, and a water inlet end pressure gauge, a water inlet end ball valve and a high-pressure water supercharging device are mounted on the water inlet pipe; the buffer plate, the shield tail brush, the protective shell and the shell cover plate are enclosed to form a grease cavity; the other side of the protective shell is provided with a water outlet hole, and the water outlet hole is connected with a water outlet end pressure gauge through a water outlet pipe; and the protective shell or the shell cover plate is provided with a grease hole communicated with the grease cavity and is connected with the grease injection device through the grease hole. The device can test the combined sealing performance of the shield tail brush and the shield tail grease product, and provides reference basis for the model selection of the shield tail brush and the parameter requirements of the shield tail grease. And the structure is simple and reasonable, the operation is easy, and the large-scale application is facilitated.
Description
Technical Field
The utility model belongs to the technical field of the shield tunnel construction, concretely relates to shield tail seals withstand voltage detection device.
Background
With the rapid development of shield construction, water-rich stratum construction cases are more and more, the requirements on shield machine sealing performance are higher and higher, but at present, the detection means and verification mode for shield tail sealing in the actual construction process are limited.
The combined sealing effect of the shield tail brushes and the shield tail grease of different brands is tested by simulating the relative position relation between the shield tail brushes and the shield shell and the injection amount of the shield tail grease, and the pressure resistance limit under different external pressure environments is obtained. The shield tail seal can be accurately verified through a physical simulation test, and a better reference basis is provided for the model selection of the shield tail brush and the parameter requirements of shield tail grease.
Disclosure of Invention
To the defect that exists among the prior art, the utility model aims at providing a shield tail seals withstand voltage detection device remedies prior art and brushes and shield tail grease combination seal effect detection not enough, provides a simple structure, detection effect little, laminating operating condition's a shield tail seals withstand voltage detection device.
In order to achieve the above object, the utility model adopts the following technical scheme:
a shield tail sealing pressure resistance detection device comprises a protective shell, a shield tail brush fixedly arranged in the protective shell, and a shell cover plate positioned above the protective shell and fixedly connected with the protective shell; wherein:
the water inlet hole has been seted up to one side of protection casing, and the water inlet hole is connected with the inlet tube, install into water end manometer, end ball valve and the high pressure water supercharging device of intaking on the inlet tube, it is the check valve to intake the end ball valve. Be equipped with the buffer board between inlet opening and the shield tail brush, buffer board, shield tail brush, protection casing and casing apron enclose to close and form the grease chamber. The other side of the protective shell is provided with a water outlet hole, and the water outlet hole is connected with a water outlet end pressure gauge through a water outlet pipe; and the protective shell or the shell cover plate is provided with a grease hole communicated with the grease cavity, and the grease cavity is connected with the grease injection device through the grease hole.
In a further scheme, a sealing device is arranged between the shell cover plate and the protection shell and comprises an annular groove formed in the top surface of the protection shell and a sealing gasket positioned in the annular groove. Through setting up sealing device, can guarantee the leakproofness between casing apron and the protection casing, guarantee detection device's detection performance, improve the reliability of testing result.
In a further scheme, a connecting lug is fixedly connected to the periphery of the top of the side wall of the protection shell, and a bolt hole is formed in a corresponding position of the shell cover plate; the protective shell is fixedly connected with the shell cover plate through bolts penetrating through the connecting lugs and the bolt holes.
In a further scheme, a water outlet end ball valve is installed on the water outlet pipe.
In a further scheme, the grease cavity is further connected with a grease injection end pressure gauge through a grease hole. The pressure of the grease injection can be detected through the grease injection end pressure gauge, so that the grease injection pressure is kept in a proper range.
In a further scheme, one end of the shield tail brush is fixedly arranged at the bottom of the protective shell, and the shield tail brush is closely attached to the inner surface of the protective shell and the lower surface of the shell cover plate.
The utility model has the advantages that:
the utility model provides a pair of withstand voltage detection device is sealed to shield tail, through the buffer board, shield tail brush, protective housing and casing apron enclose to close and form the grease chamber, through pour into the grease into at the grease intracavity, and at the opposite side in grease chamber, exert external force to the grease chamber through high pressure water supercharging device, it is comparatively unanimous with the operating mode when actual shield construction, can be better test the combination sealing performance to various shield tail brush and shield tail grease product, the parameter requirement for the lectotype of shield tail brush and shield tail grease provides better reference foundation. And the structure is simple and reasonable, the investment cost is low, the operation is easy, and the large-scale application is facilitated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
description of the drawings: 1-protective housing, 2-shield tail brush, 3-housing cover plate, 4-water inlet hole, 5-water inlet pipe, 6-water inlet end pressure gauge, 7-water inlet end ball valve, 8-high pressure water pressurizing device, 9-buffer plate, 10-grease cavity, 11-water outlet hole, 12-water outlet pipe, 13-water outlet end pressure gauge, 14-grease hole, 16-sealing washer, 17-connecting lug, 18-bolt, 19-water outlet end ball valve and 20-grease injection end pressure gauge.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "fixedly mounted," "fixedly connected," "mounted," "connected," "fixedly connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, a shield tail seal pressure resistance detection device comprises a protective casing 1 and a shield tail brush 2 fixedly installed inside the protective casing 1, wherein one end of the shield tail brush 2 is fixedly installed at the bottom of the protective casing 1, and the shield tail brush 2 is closely attached to the inner surface of the protective casing and the lower surface of a casing cover plate 3; and a shell cover plate 3 which is positioned above the protective shell 1 and is fixedly connected with the protective shell. Wherein: the water inlet 4 is formed in one side of the protection shell 1, the water inlet 4 is connected with a water inlet pipe 5, a water inlet end pressure gauge 6, a water inlet end ball valve 7 and a high-pressure water supercharging device 8 are installed on the water inlet pipe 5 and used for conveying water to the protection shell 1 in a pressing mode and testing the combined sealing performance of the shield tail brush 2 and a shield tail grease product, and the water inlet end ball valve 7 is a one-way valve. Be equipped with buffer board 9 between inlet opening 4 and shield tail brush 2, buffer board 9, shield tail brush 2, protective housing 1 and casing apron 3 enclose to close and form grease chamber 10. The other side of the protection shell 1 is provided with a water outlet hole 11, the water outlet hole 11 is connected with a water outlet end pressure gauge 6 through a water outlet pipe 12, and a water outlet end ball valve 19 is further installed on the water outlet pipe 12. The shell cover plate 3 is provided with a grease hole 14 communicated with the grease cavity 10; it should be noted that the grease hole 14 is not limited to be formed in the casing cover plate 3, and the purpose of communicating the grease cavity 10 can be achieved when the grease hole 14 is formed in a corresponding position of the protective casing 1; the grease chamber 10 is connected to a grease injection device (not shown) via a grease hole 14. The grease chamber 10 is also connected to a grease injection end pressure gauge 20 through a grease hole 14. The pressure of the grease injection can be detected through the grease injection end pressure gauge, so that the grease injection pressure is kept in a proper range.
As another embodiment of the present invention, a sealing device is provided between the casing cover plate 3 and the protection casing 1, and the sealing device includes an annular groove (not shown) provided on the top surface of the protection casing 1 and a sealing gasket 16 located in the annular groove. Through setting up sealing device, can guarantee the leakproofness between casing apron 3 and the protection casing 1, guarantee detection device's detection performance, improve the reliability of testing result.
As another embodiment of the present invention, the outer periphery of the top of the sidewall of the protective casing 1 is fixedly connected with a connecting lug 17, and a bolt hole is formed at a corresponding position of the casing cover plate 3; the protective shell 1 is fixedly connected with the shell cover plate 3 through bolts 18 which are arranged in the connecting lugs 17 and the bolt holes in a penetrating mode.
The utility model discloses a theory of operation is: the shield tail brush 2 that will detect is fixed in protection casing bottom set position, and buffer board 9, shield tail brush 2, protection casing 1 and casing apron 3 enclose to close and form grease chamber 10, will intake end ball valve 7 and adjust to closed state, and the shield tail grease that need detect is injected into in grease chamber 10, fills completely until the grease chamber. Then the high-pressure water pressurizing device 8 conveys water into the protective shell through the water inlet pipe 5, and at the moment, the combination of the shield tail brush and the shield tail grease product has certain sealing performance, so that the water is blocked at the left side of the shield tail brush; in a certain range, the pressure resistance of the shield tail brush and the shield tail grease product and the water pressure on the left side of the shield tail brush and the shield tail grease product belong to a balanced state, and the pressure at the moment can be read by a water inlet end pressure gauge 6; when the water pressure is higher than the ultimate pressure resistance of the shield tail brush and the shield tail grease product, water can penetrate through the shield tail grease and the shield tail brush to block and finally flows out of the water outlet hole, so that the pressure value of the water outlet end pressure gauge is increased from zero to a certain value, and when the water outlet end pressure gauge 13 has a value, the water pressure is indicated to exceed the ultimate pressure resistance of the shield tail brush and the shield tail grease product. At the moment, in a proper range, the water pressure is reduced until the reading of the pressure gauge at the water outlet end is reduced to 0, and at the moment, the reading of the pressure gauge at the water inlet end is the limit pressure resistance value of the shield tail brush and the shield tail grease product.
The specific operation method of the shield tail sealing pressure resistance detection device is as follows: before testing, the shield tail brush 2 is filled with hand greasing and then is fixedly arranged in the protective shell 1; water delivery pressure boost in to the protecting sheathing through high pressure water supercharging device 8, the effect of buffer board 9 prevents that water from directly impacting shield tail grease, avoids breaking away shield tail grease and influence the test result, and the water that gets into in the protecting sheathing receives blockking of buffer board and collects in one side of shield tail brush and shield tail grease, and along with the increase of inflow, its pressure also constantly increases. Initially, the reading of the pressure gauge at the water inlet end is the limit water pressure to be tested by the shield tail brush and the shield tail grease product, and the reading of the pressure gauge at the water outlet end is read after 30 s. And if the pressure of the pressure gauge at the water outlet end is detected, reducing the pressure of the water inlet end until the reading of the pressure gauge at the water outlet end is reduced to 0, wherein the reading of the pressure gauge at the water inlet end is the limit pressure resistance value of the shield tail brush and the shield tail grease product. According to the utility model discloses a detection principle and method, this detection device also can be used to the sealing ability of multichannel tail brush and grease product and detect, and this is very nimble to the detection mode of the tail brush quantity of shield structure machine difference and the shield tail brush and the grease of different brands, has higher guide meaning to actual construction.
Claims (7)
1. The utility model provides a shield tail seals withstand voltage detection device which characterized in that: the shield tail brush is fixedly arranged in the protective shell, and a shell cover plate is positioned above the protective shell and fixedly connected with the protective shell; wherein:
a water inlet hole is formed in one side of the protective shell and is connected with a water inlet pipe, and a water inlet end pressure gauge, a water inlet end ball valve and a high-pressure water pressurizing device are mounted on the water inlet pipe; a buffer plate is arranged between the water inlet hole and the shield tail brush, and the buffer plate, the shield tail brush, the protective shell and the shell cover plate are enclosed to form a grease cavity;
the other side of the protective shell is provided with a water outlet hole, and the water outlet hole is connected with a water outlet end pressure gauge through a water outlet pipe;
and the protective shell or the shell cover plate is provided with a grease hole communicated with the grease cavity, and the grease cavity is connected with the grease injection device through the grease hole.
2. The shield tail seal pressure-proof detection device of claim 1, wherein: and a sealing device is arranged between the shell cover plate and the protection shell and comprises an annular groove formed in the top surface of the protection shell and a sealing gasket positioned in the annular groove.
3. The shield tail seal pressure-proof detection device of claim 1, wherein: the periphery of the top of the side wall of the protective shell is fixedly connected with a connecting lug, and a bolt hole is formed in the corresponding position of the shell cover plate; the protective shell is fixedly connected with the shell cover plate through bolts penetrating through the connecting lugs and the bolt holes.
4. The shield tail seal pressure-proof detection device of claim 1, wherein: and a water outlet end ball valve is arranged on the water outlet pipe.
5. The shield tail seal pressure-proof detection device of claim 1, wherein: the grease cavity is also connected with a grease injection end pressure gauge through a grease hole.
6. The shield tail seal pressure-proof detection device of claim 1, wherein: the ball valve at the water inlet end is a one-way valve.
7. The shield tail seal pressure-proof detection device of claim 1, wherein: one end of the shield tail brush is fixedly arranged at the bottom of the protective shell, and the shield tail brush is closely attached to the inner surface of the protective shell and the lower surface of the shell cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371536.9U CN210400756U (en) | 2019-08-22 | 2019-08-22 | Shield tail seals withstand voltage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921371536.9U CN210400756U (en) | 2019-08-22 | 2019-08-22 | Shield tail seals withstand voltage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210400756U true CN210400756U (en) | 2020-04-24 |
Family
ID=70339191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921371536.9U Active CN210400756U (en) | 2019-08-22 | 2019-08-22 | Shield tail seals withstand voltage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210400756U (en) |
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2019
- 2019-08-22 CN CN201921371536.9U patent/CN210400756U/en active Active
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