CN214277326U - Water pressure resistance sealing performance testing device for shield tail sealing grease - Google Patents
Water pressure resistance sealing performance testing device for shield tail sealing grease Download PDFInfo
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- CN214277326U CN214277326U CN202022923478.5U CN202022923478U CN214277326U CN 214277326 U CN214277326 U CN 214277326U CN 202022923478 U CN202022923478 U CN 202022923478U CN 214277326 U CN214277326 U CN 214277326U
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- 239000004519 grease Substances 0.000 title claims abstract description 97
- 238000007789 sealing Methods 0.000 title claims abstract description 94
- 238000012360 testing method Methods 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000002184 metal Substances 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 14
- 238000004088 simulation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a shield tail sealing grease resistance to water pressure leakproofness testing arrangement, it is including the first cavity of sealed and the inside second cavity that is equipped with shield tail brush structure, pressure control device is connected to first cavity, second cavity and first cavity lower part all are equipped with weeping receiving arrangement, the operating condition of shield tail brush when this shield tail sealing grease resistance to water pressure leakproofness testing arrangement can simulate actual construction, the state of shield tail sealing grease during more real simulation actual construction, then more accurate test shield tail sealing grease's resistance to water pressure leakproofness, guarantee the quality of shield tail sealing grease.
Description
Technical Field
The utility model belongs to the water pressure sealing resistance test field of sealed grease, concretely relates to shield tail sealed grease water pressure sealing resistance testing arrangement.
Background
With the continuous development and improvement of the shield technology, the shield technology in China also makes great progress, and the development of underground spaces and tunnels in China enters a vigorous development period, so that the development of underground spaces by the shield method has incomparable advantages compared with the traditional mode: on one hand, the development of underground space and tunnel does not occupy ground land resource, has less influence on ground environment and can relieve ground traffic pressure, on the other hand, the construction efficiency of the shield method is high, the working period can be shortened, the construction safety is higher, the accident rate can be reduced, and the labor cost can be reduced in the process of construction more automatically. At present, the domestic shield construction mainly has the characteristics of large diameter, long distance, high water pressure, multiple complex sections, high burial depth and the like.
In the shield tunneling process, in order to prevent external mud water, mortar and the like from entering the shield, sealing treatment must be carried out between the shield tail and the segment. In the shield tail seal, shield tail seal grease is an important guarantee for ensuring the sealing performance, if the shield tail seal fails, the damage caused by the failure is huge, and serious safety accidents can be caused by improper remedial measures. Therefore, the important position of the shield tail sealing grease in the shield tail sealing system is shown, and the water pressure resistant sealing performance in the shield tail sealing grease is the most important performance index, so that the water pressure resistant sealing performance of the shield tail determines the performance of the shield tail grease.
The waterproof leakproofness of present shield tail sealing grease mainly simulates through the environment of shield tail sealing grease in the simulation shield construction, through setting up pressure device etc. simulation shield tail sealing grease environment, thereby test shield tail sealing grease's waterproof leakproofness, but in the actual work progress, the factor that influences shield tail sealing system is many and complicated, consequently, current testing arrangement test result can not embody shield tail sealing grease's waterproof leakproofness in the actual construction completely, make the test result inaccurate, sealing grease quality can't obtain guaranteeing.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses it is necessary to provide a shield tail sealing grease water pressure tightness testing arrangement, through set up the second cavity in the lower part of first cavity, there is the shield tail brush structure with the bolt fastening in the second cavity to be used for simulating the operating condition of shield tail brush when actually being under construction, the state of shield tail sealing grease when more real simulation actually being under construction, then the water pressure tightness of the water-resistant of more accurate test shield tail sealing grease, guarantee the quality of shield tail sealing grease, in order to solve above-mentioned problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a shield tail sealing grease water pressure tightness testing arrangement, it includes:
the water inlet pipe, the water outlet pipe, the pressure testing device and the pressure control device are connected on the cover plate;
the second cavity is formed by extending the side surface of the first cavity outwards, the second cavity is arranged at the bottom of the first cavity, a first shield tail brush, a second shield tail brush and a third shield tail brush are respectively arranged in the second cavity, the first shield tail brush separates the first cavity from the second cavity, a first grease cavity is arranged between the first shield tail brush and the second shield tail brush, a second grease cavity is arranged between the second shield tail brush and the third shield tail brush, a cavity is formed by the third shield tail brush and the inner side wall of the second cavity, and the first grease cavity and the second grease cavity are respectively provided with a grease injection port;
a first leakage hole and a second leakage hole are respectively formed in the bottoms of the first cavity and the cavity, and leakage receiving devices are respectively arranged below the first leakage hole and the second leakage hole; and a filter screen is also arranged in the first cavity and is laid on the upper end surface of the first liquid leakage hole.
Furthermore, the inner side wall of the first cavity is provided with scale marks.
Further, the cover plate seals the first cavity through a fastener, and a sealing element is arranged between the cover plate and the first cavity.
Preferably, the edges of the first cavity and the cover plate are both flange structures, the first cavity and the cover plate are sealed through the cooperation of the fastener and the flange structures, the sealing element is arranged between the first cavity and the flange structures of the cover plate, the fastener is a bolt, and a gasket is further arranged between the bolt and the flange structures.
More preferably, the sealing element is a high pressure resistant sealing rubber ring.
Further, the pressure control device comprises a pressure supply device, a pressure regulating valve, a pressure controller and a first metal pipe, wherein the pressure controller is respectively connected with the pressure supply device, the pressure regulating valve and the pressure testing device, the pressure supply device and the pressure regulating valve are sequentially connected onto the first metal pipe, and the pressure supply device is arranged at one end part of the first metal pipe;
the cover plate is communicated with a second metal pipe, and the end part of the second metal pipe, which is far away from the cover plate, is detachably connected with the end part of the first metal pipe, which is far away from the pressure supply device.
Further, the filter screen is the metal filter screen, the mesh number of metal filter screen is 200 meshes, just the filter screen is the three-layer at least.
Furthermore, stop valves are respectively arranged at the water inlet pipe, the water outlet pipe and the grease injection port.
Furthermore, the first, second and third shield tail brushes are in interference fit with the bottom of the second cavity.
Furthermore, the first, second and third shield tail brushes are all made of martensitic stainless steel.
Compared with the prior art, the utility model discloses set up the second cavity that has shield tail brush structure with the bolt fastening in first cavity lower part, contain three shield tail brushes in the second cavity, three shield tail brush structures form two grease chambeies and a cavity to shield tail sealing system in the construction is shielded to the true simulation shield, more accurate test shield constructs the quality of grease, guarantees the shield and constructs the quality of grease.
In addition, the shield tail sealing grease water pressure resistance sealing performance testing device can screen out sealing grease with high cost performance and good safety, and achieves the purposes of cost reduction and efficiency improvement for projects.
Drawings
Fig. 1 is a schematic structural view of a device for testing the hydraulic tightness of shield tail sealing grease according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of the pressure control device 305 of FIG. 1;
fig. 3 is a partially enlarged schematic view of the second cavity 20 in fig. 1.
In the figure: the first cavity 10, the first liquid leakage hole 101, the filter screen 102, the scale mark 103, the sealing element 104, the fastener 105 and the gasket 1051;
the second cavity 20, the first shield tail brush 201, the second shield tail brush 202, the third shield tail brush 203, the first grease cavity 204, the second grease cavity 205, the cavity 206, the grease injection port 207 and the second leakage hole 208;
the water pressure testing device comprises a cover plate 30, a water inlet pipe 301, a water outlet pipe 302, a second metal pipe 303, a pressure testing device 304, a pressure control device 305, a pressure regulating valve 3051, a pressure supply device 3052, a pressure controller 3053 and a first metal pipe 3054;
a leakage receiving device 40;
a shut-off valve 50.
Detailed Description
The shield tail sealing grease water pressure resistance sealing performance testing device provided by the invention will be further described in detail with reference to the attached drawings of the specification.
It will be understood that when an element is referred to as being "secured to," "disposed on," or "mounted to" another element, it can be directly on the other element or be indirectly on the other element. One element is said to be "connected to" another element, and it can be directly connected to the other element or be indirectly connected to the other element. In addition, attachment is generally referred to as attachment, where attachment may be by any means conventional in the art, such as "threading," "riveting," "welding," or the like.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the specification and are used in an illustrative or positional relationship based on the orientation shown in the drawings and are used for convenience in describing embodiments of the invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed or operated in a particular orientation, and thus should not be construed as limiting the invention.
The embodiment discloses a device for testing the hydraulic tightness of shield tail sealing grease, which comprises a first cavity 10, a second cavity 20 and a cover plate 30. As shown in fig. 1, the first cavity 10 is sealed by a cover plate 30, the side surface of the first cavity 10 extends outward to form a second cavity 20, and the second cavity 20 is disposed at the bottom of the first cavity 10.
Specifically, the cover plate 30 covers the first cavity 10 through the fastening member 105, and the sealing member 104 is disposed between the first cavity 10 and the cover plate 30, it can be understood that the sealing structure of the first cavity 10 and the cover plate 30 is a structure commonly used in the art, specifically, the edges of the first cavity 10 and the cover plate 30 are both flange structures, and the fastening member 105 cooperates with the flange structures to seal the first cavity 10 and the cover plate 30, in this embodiment, the fastening member 105 is a bolt, and a gasket 1051 is further disposed between the fastening member 105 and the flange structures, specifically, the gasket 1051 is sleeved on the bolt, and is located between the bolt and the flange structures after being fastened, so as to improve the sealing stability of the first cavity 10 and the cover plate 30, avoid slipping and damage to the fastening member 105, and increase the service life of the testing apparatus, it can be understood that the gasket 1051 may be made of any conventional material in the art, in this example rubber. Further, a sealing member 104 is disposed between the first chamber 10 and the cover plate 30, so as to improve the sealing performance of the first chamber 10 and the cover plate 30, wherein the sealing member 104 is a sealing ring or a sealing ring conventional in the art, and is sized and dimensioned to match with the port of the first chamber 10, and in this embodiment, the sealing member 104 is a rubber sealing ring, preferably a high pressure resistant rubber sealing ring. In addition, since pressurization is required during testing, the first chamber 10 and the cover plate 30 are generally made of high-pressure-resistant metal materials, and any high-pressure-resistant metal material that is conventional in the art can be used in the testing device. Preferably, in this embodiment, the inner side wall of the first cavity 10 is provided with scale lines 103, and the specific scale interval can be adjusted as required, in this embodiment, the bottom surface of the first cavity 10 is provided with scales with a length of 50mm upwards, and the accuracy is 1 mm.
Referring to fig. 1, further, a water inlet pipe 301, a water outlet pipe 302, a second metal pipe 303, a pressure testing device 304 and a pressure control device 305 are connected to the cover plate 30, as shown in fig. 1, a stop valve 50 is respectively disposed on the water inlet pipe 301 and the water outlet pipe 302 for controlling water inlet or water outlet in the first cavity 10. The second metal tube 303 is disposed on the upper end surface of the cover plate 30, and communicates the pressure control device 305 with the first cavity 10 for controlling the pressure in the first cavity 10, in this embodiment, the second metal tube 303 and the cover plate 30 are integrally formed. Referring to fig. 1 and 2, the pressure control means 305 includes a pressure regulating valve 3051, a pressure supply means 3052, a pressure controller 3053 and a first metal pipe 3054, and specifically, the pressure regulating valve 3051 and the pressure supply means 3052 are connected to the first metal pipe 3054 in sequence, and the pressure supply means 3052 is connected to one end of the first metal pipe 3054, it is to be understood that the pressure supply means 3052 is not particularly limited thereto, and may be any pressure generating means in the art. Further, the pressure controller 3053 is respectively connected to the pressure regulating valve 3051, the pressure supplying device 3052 and the pressure testing device 304, the pressure testing device 304 is configured to test the pressure in the first cavity 10, and when the first cavity 10 reaches a specified pressure, the pressure controller 3053 controls the pressure in the first cavity 10 to be maintained unchanged by controlling the pressure regulating valve 3051 and the pressure supplying device 3052 through the feedback pressure of the pressure testing device 304, it is understood that the connection manner of the pressure controller 3053 and the pressure regulating valve 3051, the pressure supplying device 3052 and the pressure testing device 304 is a conventional connection manner automatically controlled in the art, and is not specifically described here, and in addition, the pressure testing device 304 may be any device for testing the pressure, which is conventional in the art, and is generally a pressure gauge. Further, the end of the first metal pipe 3054 far from the pressure applying means 3052 is detachably connected to the end of the second metal pipe 303 far from the cover plate 30 through a detachable pipe joint.
Further, referring to fig. 1 and 3, a first shield tail brush 201, a second shield tail brush 202 and a third shield tail brush 203 are respectively arranged in the second cavity 20, the first shield tail brush 201 separates the first cavity 10 from the second cavity 20, further, a first grease chamber 204 is arranged between the first shield tail brush 201 and the second shield tail brush 202, the second shield tail brush 202 and the third shield tail brush 203 are provided with a second grease chamber 205, a cavity 206 is formed between the third shield tail brush 203 and the inner side wall of the second cavity 20, specifically, the upper end portions of the first shield tail brush 201, the second shield tail brush 202 and the third shield tail brush 203 are respectively fixed on the inner wall of the top of the second cavity 20 by bolts, thereby facilitating the disassembly, cleaning and maintenance of the shield tail brushes, and the like, the end portion of the third shield tail brush far from the top is matched with the bottom of the second cavity 20, and in order to simulate the actual environment more truly, the first shield tail brush 201, the second shield tail brush 202 and the third shield tail brush 203 are all made of martensitic stainless steel. Further, with reference to fig. 3, a grease inlet 207 is disposed above the first grease chamber 204 and the second grease chamber 205 for injecting the grease, and a stop valve 50 is disposed on the grease inlet 207 for controlling the opening and closing of the grease inlet 207.
Further, as shown in fig. 3 and fig. 1, the first cavity 10 and the bottom of the cavity 206 are respectively provided with a first leakage hole 101 and a second leakage hole 208, and the leakage receiving device 40 is respectively provided below the first leakage hole 101 and the second leakage hole 208 to receive leakage, it is understood that the number of the first leakage hole 101 and the second leakage hole 208 may not be specifically limited as long as the liquid of the first cavity 10 and the liquid of the second cavity 20 can flow out. Further, it is understood that the cross section of the leakage liquid receiving means 40 should be larger than the area of the first leakage hole 101 and the second leakage hole 208, so as to receive all the liquid leaked from the bottom surfaces of the first cavity 10 and the second cavity 20, thereby avoiding errors, and the leakage liquid receiving means 40 herein refers to a container capable of receiving the liquid, and the specific shape thereof is not limited.
Referring to fig. 1, a filter screen 102 is further disposed in the first cavity 10, and is used for coating the shield tail sealing grease thereon and then testing the water pressure sealing resistance of the shield tail sealing grease, so that the filter screen 102 needs to be laid on and cover the bottom surface of the first weep hole 101 in the first cavity 10, and preferably, the area of the filter screen 102 is slightly larger than the area of the bottom of the first cavity 10, so that the shield tail sealing grease can be laid on the filter screen 102, and the shield tail sealing grease completely covers the bottom surface of the first cavity 10; further, in this embodiment, the screen 102 is a metal screen with 200 meshes, and at least three layers are laid.
The device for testing the hydraulic pressure resistance and the sealing performance of the shield tail sealing grease is used for collecting the temperature and the water quality in the shield construction process before testing, controlling the collection temperature and the water quality of experimental water to be consistent, and ensuring the testing accuracy.
Preparation before testing: laying a filter screen 102 at the bottom of the first cavity 10, laying three layers, wherein the diameter of the filter screen 102 is slightly larger than the inner diameter of the bottom surface of the first cavity 10, precisely laying shield tail sealing grease with the thickness of 25mm on the upper part of the filter screen 102, meanwhile, coating shield tail sealing grease for tests on three shield tail brushes, injecting grease to be tested into the first grease cavity 204 and the second grease cavity 205 from a grease injection port, filling the grease cavity with the shield tail sealing grease to be tested, closing a stop valve of the grease injection port 207, sequentially covering a sealing element 104 and a cover plate 30 on a port of the first cavity 10, and fastening through a fastening piece 105.
The test was started: opening the stop valve 50 on the water inlet pipe 301, slowly injecting the experimental water with qualified temperature and same water quality into the first cavity 10 from the water inlet pipe 301, closing the stop valve 50 on the water outlet pipe 302 when the water overflows from the water outlet pipe 302, filling the whole first cavity 10 with the experimental water, and closing the stop valve 50 on the water inlet pipe 301; the pressure controller 3053 is set to 1.6MPa, the pressure in the first cavity 10 is slowly increased to 1.6MPa by the pressure supply device 3052, and the pressure is maintained constant by controlling the pressure regulating valve 3051, and the pressure is maintained at 1.6MPa for 60 min.
Observing whether leakage exists in the two leakage receiving devices 40 or whether a mixture of grease and water exists in the two leakage receiving devices 40, if leakage exists in the leakage receiving device 40 below the first leakage hole 101, weighing the leakage receiving device 40 and the leakage below the first leakage hole 101 (the weight is recorded as m1), putting the leakage receiving device 40 into an oven for drying, and weighing the leakage receiving device 40 below the first leakage hole 101 (the weight is recorded as m2), wherein the difference between the masses (m1-m2) is the weight of the leakage amount m, so that the water pressure sealing performance of the shield tail sealing grease to be tested can be judged, and the more the amount of leakage is, the worse the water pressure sealing performance of the shield tail sealing grease is, and the unsafe construction is caused; if leakage exists in the leakage receiving device 40 below the first leakage hole 101 and leakage exists in the leakage hole below the second leakage hole 208, the grease injection amount should be increased into the grease cavity, if the leakage can be stopped, the grease can maintain the shield tail sealing performance under the pressure, otherwise, the grease cannot be maintained; if there is no leakage in the leakage receiving device 40 below the first leakage hole 101 and there is leakage in the leakage receiving device 40 below the second leakage hole 208, the grease injection amount should be increased in the first grease chamber 204 and the second grease chamber 205, if leakage can be stopped, the grease can maintain the shield tail sealing performance under the pressure, if leakage cannot be stopped, the grease can satisfy the hydraulic pressure resistant sealing performance under the pressure, but the sealing performance cannot be maintained in shield tail construction.
After the test is finished, the device is disassembled, cleaned and tidied for the next test. It can be understood that the testing pressure is not limited to 1.6MPa, the testing pressure can be increased to 3.5MPa or 4MPa, adjustment is performed according to needs, the increase of the pressure is also the increase of the safety coefficient, and then the same steps are adopted to judge whether the shield tail sealing grease is good or not, so that the shield tail sealing grease with the highest cost performance and the best safety is screened out, and the purposes of cost reduction and efficiency improvement for the project are achieved.
It can be seen through the aforesaid, all can dismantle between each structure of shield tail sealing grease water pressure tightness testing arrangement in this embodiment, and the cost is practiced thrift for detecting in the convenient transportation. Because the shield tail sealing grease is complex and changeable in the actual use process, the state of the shield tail sealing grease in the shield process in the actual application can be better reflected by adding the shield tail brush structure cavity at the lower part of the second cavity 20, and a more accurate test result and theoretical support are provided for the water pressure resistance sealing performance of the shield tail sealing grease in the actual use process.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a shield tail sealing grease water pressure resistance leakproofness testing arrangement which characterized in that, it includes:
the water inlet pipe, the water outlet pipe, the pressure testing device and the pressure control device are connected on the cover plate;
the second cavity is formed by extending the side surface of the first cavity outwards, the second cavity is arranged at the bottom of the first cavity, a first shield tail brush, a second shield tail brush and a third shield tail brush are arranged in the second cavity respectively, the first shield tail brush separates the first cavity from the second cavity, a first grease cavity is arranged between the first shield tail brush and the second shield tail brush, a second grease cavity is arranged between the second shield tail brush and the third shield tail brush, the third shield tail brush and the inner side wall of the second cavity form a cavity, and the first grease cavity and the second grease cavity are respectively provided with a grease injection port;
a first leakage hole and a second leakage hole are respectively formed in the bottoms of the first cavity and the cavity, and leakage receiving devices are respectively arranged below the first leakage hole and the second leakage hole; and a filter screen is also arranged in the first cavity and is laid on the upper end surface of the first liquid leakage hole.
2. The device for testing the hydraulic tightness of the shield tail sealing grease of claim 1, wherein the inner side wall of the first cavity is provided with scale marks.
3. The device for testing the hydraulic tightness of the shield tail sealing grease of claim 1, wherein the cover plate seals the first cavity through a fastener, and a sealing member is arranged between the cover plate and the first cavity.
4. The device for testing the hydraulic pressure resistance of the shield tail sealing grease of claim 3, wherein the edges of the first cavity and the cover plate are both flange structures, the fastener and the flange structures are matched to seal the first cavity and the cover plate, and the sealing element is arranged between the first cavity and the flange structures of the cover plate, wherein the fastener is a bolt, and a gasket is further arranged between the bolt and the flange structures.
5. The device for testing the hydraulic tightness of the shield tail sealing grease according to claim 3 or 4, wherein the sealing element is a high-pressure-resistant sealing rubber ring.
6. The device for testing the hydraulic tightness of the shield tail sealing grease of claim 1, wherein the pressure control device comprises a pressure supply device, a pressure regulating valve, a pressure controller and a first metal pipe, the pressure controller is respectively connected with the pressure supply device, the pressure regulating valve and the pressure testing device, the pressure supply device and the pressure regulating valve are sequentially connected to the first metal pipe, and the pressure supply device is arranged at one end of the first metal pipe;
the cover plate is communicated with a second metal pipe, and the end part of the second metal pipe, which is far away from the cover plate, is detachably connected with the end part of the first metal pipe, which is far away from the pressure supply device.
7. The device for testing the hydraulic tightness of the shield tail sealing grease of claim 1, wherein the filter screen is a metal filter screen, the mesh number of the metal filter screen is 200 meshes, and the filter screen has at least three layers.
8. The device for testing the hydraulic pressure resistance of the shield tail sealing grease of claim 1, wherein the water inlet pipe, the water outlet pipe and the grease inlet are respectively provided with a stop valve.
9. The device for testing the hydraulic tightness of the shield tail sealing grease of claim 1, wherein the first shield tail brush, the second shield tail brush, the third shield tail brush and the bottom of the second cavity are in interference fit.
10. The device for testing the hydraulic pressure resistance of the shield tail sealing grease according to claim 1, wherein the first shield tail brush, the second shield tail brush and the third shield tail brush are all made of martensitic stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022923478.5U CN214277326U (en) | 2020-12-08 | 2020-12-08 | Water pressure resistance sealing performance testing device for shield tail sealing grease |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022923478.5U CN214277326U (en) | 2020-12-08 | 2020-12-08 | Water pressure resistance sealing performance testing device for shield tail sealing grease |
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| CN214277326U true CN214277326U (en) | 2021-09-24 |
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| CN202022923478.5U Active CN214277326U (en) | 2020-12-08 | 2020-12-08 | Water pressure resistance sealing performance testing device for shield tail sealing grease |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459999A (en) * | 2022-03-22 | 2022-05-10 | 铁正检测科技有限公司 | Shield tail sealing grease water flow washout resistance test device |
| CN114544375A (en) * | 2022-03-07 | 2022-05-27 | 美思流体动力科技(哈尔滨)有限公司 | O-shaped ring hydrostatic test device for nuclear main pump |
-
2020
- 2020-12-08 CN CN202022923478.5U patent/CN214277326U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544375A (en) * | 2022-03-07 | 2022-05-27 | 美思流体动力科技(哈尔滨)有限公司 | O-shaped ring hydrostatic test device for nuclear main pump |
| CN114459999A (en) * | 2022-03-22 | 2022-05-10 | 铁正检测科技有限公司 | Shield tail sealing grease water flow washout resistance test device |
| CN114459999B (en) * | 2022-03-22 | 2024-04-26 | 铁正检测科技有限公司 | Shield tail sealing grease water-flow-resistance washout test device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |