CN214334581U - Slurry density detection system of slurry storehouse and slurry shield machine - Google Patents
Slurry density detection system of slurry storehouse and slurry shield machine Download PDFInfo
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- CN214334581U CN214334581U CN202120213563.4U CN202120213563U CN214334581U CN 214334581 U CN214334581 U CN 214334581U CN 202120213563 U CN202120213563 U CN 202120213563U CN 214334581 U CN214334581 U CN 214334581U
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Abstract
The utility model provides a muddy water storehouse mud density detecting system and muddy water shield construct machine, muddy water storehouse mud density detecting system includes: a shield body; the density measuring pipeline comprises a slurry pumping pipeline and a slurry return pipeline; pumping a slurry pump connected to the density measuring pipeline; the densimeter is arranged on the density measuring pipeline; the first pressure sensor is connected to the density measuring pipeline and is positioned at the upstream of the mud pump; the second pressure sensor is connected to the density measuring pipeline and is positioned at the downstream of the mud pump; the first valve is connected to the slurry pumping pipeline; the second valve is connected to the slurry return pipeline; the set position of the pumping mud pump is between the first valve and the second valve. The utility model discloses a pressure sensor can monitor the exit pressure of slush pump, and then judges whether the trouble takes place. Meanwhile, once a fault occurs and the density measuring pipeline is required to be overhauled, the density measuring pipeline can be cut off through the valve, the overhauling operation is convenient, and when the density measurement is not required, the slurry can be prevented from entering the pumping slurry pump, so that the service life is ensured.
Description
Technical Field
The utility model relates to a slurry shield constructs technical field, concretely relates to muddy water storehouse mud density detecting system and slurry shield constructs machine.
Background
At present, in tunnel construction under geological conditions of mountainous and sea areas, excavation construction is safe and efficient through a slurry shield machine, and along with popularization of tunnel construction intellectualization and informatization, the slurry shield machine still has the defects of efficient acquisition of main parameters and timely feedback of information. A shield driver mainly checks parameters such as related flow, pressure, liquid level, temperature, density, torque, thrust and the like of each system to carry out shield tunneling operation, and the method is of great importance to a slurry shield circulation system tunneling mode and slurry density parameters of a slurry cabin. The problems of whether the shield is over excavated, whether the stratum is collapsed, whether boulders are encountered and the like in the shield tunneling process can be judged in advance according to the mud density of the mud water bin. For the detection of the mud density of the slurry storehouse, the current commonly used project construction detection mode is manual sampling detection, the sampled mud is the mud pumped to the ground, and a differential pressure densimeter is adopted for detection, the detection mode has poor effect, the density parameter is not timely, discontinuous and accurate in feedback, the feedback is not the real density value of the mud in the slurry storehouse, and the prejudgment of a driver on the excavation condition in the slurry storehouse of the shield tunneling machine is influenced.
To this end, the chinese utility model patent with the publication number CN211974972U discloses a density-adjustable muddy water and soil pressure dual-mode shield machine, including the shield body, air cushion storehouse and muddy water storehouse arranged in the front of the shield body, the slurry inlet pipeline and the slurry discharge pipeline communicated with the muddy water storehouse, and further including the density measuring pipeline communicated with the muddy water storehouse for measuring the density of the slurry in the muddy water storehouse, the density measuring pipeline includes a pipeline, and the pipeline is provided with a density measuring circulating pump (i.e. pumping slurry pump) and a densimeter. The density measuring pipeline can realize real-time detection of the density of the slurry in the slurry cabin, and the real density value of the slurry in the slurry cabin is fed back, so that the density parameter can be fed back timely, continuously and accurately, and a driver can judge the excavation condition in the slurry cabin of the shield tunneling machine.
However, in the actual operation process, various sudden situations may occur, for example, an upstream pipeline and a downstream pipeline of the pumping slurry pump are blocked, or the pumping slurry pump itself fails, so that the slurry cannot be pumped out smoothly, and cannot be returned to the slurry sump smoothly, and at this time, the density of the slurry cannot be accurately measured by the densimeter, and the pipeline or the pumping slurry pump needs to be overhauled. The existing density measuring pipeline can not automatically monitor whether a fault occurs, and the fault can be known after a period of time, so that the fault is timely relieved. In addition, the existing density measurement pipeline is directly communicated with the mud water bin, so that the overhauling operation is influenced, and when the density measurement is not needed, the mud can enter a pumping mud pump and a densimeter, so that the service life is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a mud density detection system of a mud water cabin, which can automatically monitor whether a fault occurs, is convenient for maintenance and operation, and can ensure the service life of a pumping mud pump when density measurement is not needed; an object of the utility model is to provide a can whether automatic monitoring takes place, and convenient maintenance operation, can guarantee to pump slush pump life's slurry shield structure machine simultaneously when not needing density measurement with a fault.
In order to achieve the above object, the utility model provides a muddy water storehouse mud density detecting system adopts following technical scheme:
a mud sump mud density detection system, comprising:
the front end of the shield body is provided with a muddy water bin;
the density measuring pipeline comprises a slurry pumping pipeline and a slurry return pipeline, the slurry pumping pipeline is provided with a slurry pumping port communicated with the muddy water bin, and the slurry return pipeline is provided with a slurry return port communicated with the muddy water bin;
the pumping slurry pump is connected to the density measuring pipeline and used for pumping the slurry in the slurry bin into the density measuring pipeline and discharging the slurry back into the slurry bin;
the densimeter is arranged on the density measuring pipeline and used for detecting the density of the slurry;
the mud density detection system of the mud water storehouse still includes:
the first pressure sensor is connected to the density measuring pipeline, is positioned at the upstream of the pumping mud pump and is used for detecting the inlet pressure of the pumping mud pump;
the second pressure sensor is connected to the density measuring pipeline, is positioned at the downstream of the pumping mud pump and is used for detecting the outlet pressure of the pumping mud pump;
the first valve is connected to the slurry pumping pipeline and used for controlling the on-off of the slurry pumping pipeline;
the second valve is connected to the slurry return pipeline and used for controlling the on-off of the slurry return pipeline;
the arrangement position of the pumping mud pump on the density measuring pipeline is located between the first valve and the second valve.
The beneficial effects of the above technical scheme are that: the mud density detection system of the mud sump further comprises the first pressure sensor and the second pressure sensor, so that the inlet pressure and the outlet pressure of the pumping mud pump can be detected, whether a fault occurs can be judged by monitoring the inlet pressure and the outlet pressure, for example, when the pressure is overlarge, a pipeline is blocked, and therefore the fault can be conveniently and timely removed by taking measures; meanwhile, the first valve is connected to the slurry pumping pipeline, the slurry pumping pipeline is convenient to control on-off of the slurry pumping pipeline, the second valve is connected to the slurry return pipeline, on-off of the slurry return pipeline is convenient to control, in case of failure and maintenance, the slurry pumping pipeline and the slurry return pipeline can be cut off through the first valve and the second valve, maintenance operation is convenient, meanwhile, when density measurement is not needed, the density measurement pipeline can be cut off, slurry is prevented from entering the pumping and conveying slurry pump, and the service life of the pumping and conveying slurry pump is guaranteed.
Furthermore, in order to facilitate the arrangement of each device, simultaneously avoid each device to bear high pressure, guarantee the life of each device, the shield body is including setting up the air cushion storehouse in muddy water storehouse rear and setting up the well shield in air cushion storehouse rear, and it runs through the air cushion storehouse respectively and extends to the well shield inside to take out thick liquid pipeline and return thick liquid pipeline, and pump slurry pump, densimeter, first pressure sensor, second pressure sensor, first valve and second valve are all located the well shield inside.
Further, in order to ensure the service life of each device when density measurement is not needed, the arrangement positions of the densitometer, the first pressure sensor and the second pressure sensor on the density measuring pipeline are all located between the first valve and the second valve.
Furthermore, in order to avoid the situation that thick slurry at the lower part of the slurry cabin enters the slurry pumping pipeline and the slurry return pipeline pass through the slurry at the lower part of the air cushion cabin, the slurry pumping port and the slurry return port are both positioned at the top of the slurry cabin.
Furthermore, for the convenience of arrangement, the space in the vertical direction is saved, the slurry pumping port and the slurry return port are located at the same vertical height, the vertical axis passing through the center of the shield body is defined as a first axis, and the slurry pumping port and the slurry return port are arranged in a left-right symmetrical mode relative to the first axis.
Furthermore, in order to facilitate arrangement and optimize layout, the pumping slurry pump and the first pressure sensor are connected to the slurry pumping pipeline, and the second pressure sensor is connected to the slurry return pipeline.
Further, to facilitate the measurement, a densitometer is installed on the return line downstream of the second pressure sensor.
Further, in order to improve the measurement accuracy, the densitometer is a radioactive density detector.
Further, for convenience of use, the first valve and the second valve are both pneumatic knife gate valves.
In order to achieve the above object, the utility model provides a slurry shield constructs machine adopts following technical scheme:
the utility model provides a slurry shield constructs machine, includes muddy water storehouse mud density detecting system, muddy water storehouse mud density detecting system includes:
the front end of the shield body is provided with a muddy water bin;
the density measuring pipeline comprises a slurry pumping pipeline and a slurry return pipeline, the slurry pumping pipeline is provided with a slurry pumping port communicated with the muddy water bin, and the slurry return pipeline is provided with a slurry return port communicated with the muddy water bin;
the pumping slurry pump is connected to the density measuring pipeline and used for pumping the slurry in the slurry bin into the density measuring pipeline and discharging the slurry back into the slurry bin;
the densimeter is arranged on the density measuring pipeline and used for detecting the density of the slurry;
the mud density detection system of the mud water storehouse still includes:
the first pressure sensor is connected to the density measuring pipeline, is positioned at the upstream of the pumping mud pump and is used for detecting the inlet pressure of the pumping mud pump;
the second pressure sensor is connected to the density measuring pipeline, is positioned at the downstream of the pumping mud pump and is used for detecting the outlet pressure of the pumping mud pump;
the first valve is connected to the slurry pumping pipeline and used for controlling the on-off of the slurry pumping pipeline;
the second valve is connected to the slurry return pipeline and used for controlling the on-off of the slurry return pipeline;
the arrangement position of the pumping mud pump on the density measuring pipeline is located between the first valve and the second valve.
The beneficial effects of the above technical scheme are that: the mud density detection system of the mud sump further comprises the first pressure sensor and the second pressure sensor, so that the inlet pressure and the outlet pressure of the pumping mud pump can be detected, whether a fault occurs can be judged by monitoring the inlet pressure and the outlet pressure, for example, when the pressure is overlarge, a pipeline is blocked, and therefore the fault can be conveniently and timely removed by taking measures; meanwhile, the first valve is connected to the slurry pumping pipeline, the slurry pumping pipeline is convenient to control on-off of the slurry pumping pipeline, the second valve is connected to the slurry return pipeline, on-off of the slurry return pipeline is convenient to control, in case of failure and maintenance, the slurry pumping pipeline and the slurry return pipeline can be cut off through the first valve and the second valve, maintenance operation is convenient, meanwhile, when density measurement is not needed, the density measurement pipeline can be cut off, slurry is prevented from entering the pumping and conveying slurry pump, and the service life of the pumping and conveying slurry pump is guaranteed.
Furthermore, in order to facilitate the arrangement of each device, simultaneously avoid each device to bear high pressure, guarantee the life of each device, the shield body is including setting up the air cushion storehouse in muddy water storehouse rear and setting up the well shield in air cushion storehouse rear, and it runs through the air cushion storehouse respectively and extends to the well shield inside to take out thick liquid pipeline and return thick liquid pipeline, and pump slurry pump, densimeter, first pressure sensor, second pressure sensor, first valve and second valve are all located the well shield inside.
Further, in order to ensure the service life of each device when density measurement is not needed, the arrangement positions of the densitometer, the first pressure sensor and the second pressure sensor on the density measuring pipeline are all located between the first valve and the second valve.
Furthermore, in order to avoid the situation that thick slurry at the lower part of the slurry cabin enters the slurry pumping pipeline and the slurry return pipeline pass through the slurry at the lower part of the air cushion cabin, the slurry pumping port and the slurry return port are both positioned at the top of the slurry cabin.
Furthermore, for the convenience of arrangement, the space in the vertical direction is saved, the slurry pumping port and the slurry return port are located at the same vertical height, the vertical axis passing through the center of the shield body is defined as a first axis, and the slurry pumping port and the slurry return port are arranged in a left-right symmetrical mode relative to the first axis.
Furthermore, in order to facilitate arrangement and optimize layout, the pumping slurry pump and the first pressure sensor are connected to the slurry pumping pipeline, and the second pressure sensor is connected to the slurry return pipeline.
Further, to facilitate the measurement, a densitometer is installed on the return line downstream of the second pressure sensor.
Further, in order to improve the measurement accuracy, the densitometer is a radioactive density detector.
Further, for convenience of use, the first valve and the second valve are both pneumatic knife gate valves.
Drawings
FIG. 1 is a schematic structural view of a mud density detection system of a mud-water chamber of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a partial side view of fig. 1.
In the figure: 1-shield body; 2-a muddy water bin; 3-air cushion chamber; 4-middle shield; 5-slurry pumping pipeline; 51-a slurry pumping port; 6-a slurry return pipeline; 61-a pulp return port; 7-a first valve; 8-a second valve; 9-a first pressure sensor; 10-a second pressure sensor; 11-pumping the slurry pump; 12-a densitometer; 13-a slurry inlet line; 14-slurry discharge line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses an embodiment of well muddy water storehouse mud density detecting system is shown in fig. 1 and fig. 2, including the shield body 1, there is muddy water storehouse 2 shield body 1's front end, and shield body 1 is including setting up air cushion storehouse 3 at muddy water storehouse 2 rear and setting up well shield 4 at air cushion storehouse 3 rear.
The mud density detection system of the muddy water storehouse also comprises a density measuring pipeline, the density measuring pipeline comprises a slurry pumping pipeline 5 and a slurry return pipeline 6 communicated with the slurry pumping pipeline 5, as shown in a combined figure 3, the slurry pumping pipeline 5 is provided with a slurry pumping port 51 communicated with the muddy water storehouse 2, and the slurry return pipeline 6 is provided with a slurry return port 61 communicated with the muddy water storehouse 2. Specifically, slurry pumping port 51 and slurry return port 61 are located at the top of slurry tank 2, so that thick slurry in the lower part of slurry tank 2 can be prevented from entering slurry pumping pipeline 5, the measurement result is ensured, and slurry pumping pipeline 5 and slurry return pipeline 6 are prevented from passing through the slurry in the lower part of air cushion tank 3, so that the pipeline arrangement is facilitated.
Further, as shown in fig. 3, the slurry pumping port 51 and the slurry return port 61 are located at the same vertical height, the vertical axis which passes through the center of the shield body 1 is defined as a first axis, and the slurry pumping port 51 and the slurry return port 61 are arranged in bilateral symmetry relative to the first axis, so that the slurry pumping pipeline 5 and the slurry return pipeline 6 are located at the same vertical height, and the whole density measuring pipeline is arranged horizontally, so that arrangement of devices on the density measuring pipeline is facilitated, and the space in the vertical direction is saved. It should be noted that fig. 1 and fig. 2 are schematic diagrams, which are only used for convenience to show which devices are connected to the slurry pumping pipeline 5 and the slurry return pipeline 6, and do not represent that the slurry return pipeline 6 is located above the slurry pumping pipeline 5.
The mud density detection system of the muddy water storehouse also comprises a pumping mud pump 11 connected to the density measuring pipeline, specifically, the pumping mud pump 11 is connected to the mud pumping pipeline 5 and used for pumping the mud in the muddy water storehouse 2 to the mud pumping pipeline 5 and discharging the mud back to the muddy water storehouse 2 through the mud returning pipeline 6.
The mud density detection system of the mud water sump further comprises a first pressure sensor 9 and a second pressure sensor 10 which are connected to the density measurement pipeline, specifically, the first pressure sensor 9 is connected to the pumping pipeline 5 and located at the upstream of the pumping mud pump 11 and used for detecting the inlet pressure of the pumping mud pump 11; a second pressure sensor 10 is connected to the mud return line 6 downstream of the pumping mud pump 11 for sensing the outlet pressure of the pumping mud pump 11. Therefore, whether a fault occurs can be judged by monitoring the pressure of the inlet and the outlet of the pumping mud pump 11, for example, when the pressure is overlarge, a pipeline is blocked, and therefore the fault can be conveniently and timely removed by taking measures.
The mud density detection system of the mud water sump further comprises a densimeter 12 installed on the density measuring pipeline, specifically, the densimeter 12 is installed on the mud returning pipeline 6 and located at the downstream of the second pressure sensor 10 and used for detecting the density of the mud, and the densimeter 12 is specifically a radioactive density detector so as to improve the measurement accuracy.
The mud density detection system of the muddy water storehouse also comprises a first valve 7 connected to the slurry pumping pipeline 5 and a second valve 8 connected to the slurry return pipeline 6, wherein the first valve 7 is used for controlling the on-off of the slurry pumping pipeline 5, the second valve 8 is used for controlling the on-off of the slurry return pipeline 6, and for convenience in control and connection to the pipeline, the first valve 7 and the second valve 8 are both pneumatic knife gate valves.
As shown in fig. 1 and 2, the slurry pumping pipeline 5 and the slurry return pipeline 6 respectively extend through the air cushion chamber 3 to the inside of the middle shield 4, the slurry pumping pump 11, the densimeter 12, the first pressure sensor 9, the second pressure sensor 10, the first valve 7 and the second valve 8 are all located inside the middle shield, and these components are uniformly arranged inside the middle shield 4, so as to facilitate the arrangement of the components, simultaneously avoid the components from bearing the high pressure in the air cushion chamber 3, and ensure the service life of the components.
Meanwhile, as shown in fig. 1 and 2, the setting positions of the pumping mud pump 11, the densimeter 12, the first pressure sensor 9 and the second pressure sensor 10 on the density measurement pipeline are all located between the first valve 7 and the second valve 8, and the first valve 7 and the second valve 8 are respectively located at positions close to the air cushion bin 3, so that when the first valve 7 and the second valve 8 are closed, the slurry pumping pipeline and the slurry return pipeline can be cut off, and all devices are completely blocked, so that on one hand, the maintenance operation can be conveniently carried out when the pipelines are blocked or a certain device fails, on the other hand, when the density measurement is not needed, the slurry can be prevented from entering the devices, and the service life of each device can be ensured.
In addition, as shown in fig. 1, the slurry inlet pipeline 13 is used for pumping slurry into the slurry cabin 2, and the slurry mixture of the slurry discharge pipeline 14 after convenient excavation is discharged, so that a slurry balance type shield is realized, and the part belongs to the prior art, and the utility model is not described in detail.
The utility model discloses a mud water storehouse mud density detecting system is when using, first valve 7 and second valve 8 are opened in the main control room control of shield structure machine, start pumping slush pump 11, pumping slush pump 11 extracts mud from the pump outlet 51 at mud water storehouse top through taking out thick liquid pipeline 5, mud passes air cushion storehouse 3 through taking out thick liquid pipeline 5 and draws the import of pumping slush pump 11 in well shield 4, first pressure sensor 9 and second pressure sensor 10 detect the exit pressure of pumping slush pump 11, mud beats to the mud water storehouse 2 in through returning thick liquid pipeline 6. In the process, the densimeter 12 arranged on the slurry return pipeline 6 detects the density of the slurry in the slurry return pipeline and feeds back parameters to the main control room, and the slurry circulation flowing detection of the slurry density of the slurry cabin is facilitated due to the fact that the slurry pumping and pumping pump 1 circularly pumps the slurry for back pumping. When the detection is stopped, the slurry pump 1 can be stopped to be pumped, the two valves are closed, and the detection of the slurry density of the slurry storehouse can be completed through the operation.
The utility model discloses a muddy water storehouse mud density detecting system can satisfy muddy water storehouse mud density timely, in succession, accurate feedback, and the shield constructs the driver and can predetermine according to this muddy water storehouse mud density whether the shield tunnelling in-process surpasses to dig, whether the stratum sinks, whether meet boulder scheduling problem, discovers early and takes measures to prevent. In addition, bentonite can be injected into the muddy water bin according to the mud density of the muddy water bin to adjust the mud density of the muddy water bin, so that the water and soil pressure balance of the muddy water bin is achieved, the excavation surface is more stable, and the construction safety is guaranteed.
In other embodiments of the mud density detection system of the mud water cabin, the first valve and the second valve can also be hydraulic knife gate valves or any other valves capable of controlling the on-off of the pipeline.
In other embodiments of the mud-water sump mud density detection system, the densitometer may also be a differential pressure densitometer or any other densitometer capable of detecting the density of the mud.
In other embodiments of the mud sump mud density detection system, a densitometer may also be connected to the mud withdrawal line.
In other embodiments of the mud density detection system of the mud water cabin, the pumping mud pump and the first pressure sensor may be connected to the mud return pipeline, or the pumping mud pump, the first pressure sensor and the second pressure sensor may be connected to the mud pumping pipeline.
In other embodiments of the mud density detection system of the mud-water silo, when the slurry pumping port and the slurry return port are located at the same vertical height, the slurry pumping port and the slurry return port may not be arranged in a left-right symmetrical manner relative to the first axis, but both may be deviated to the left side or the right side.
In other embodiments of the mud density detection system of the mud water cabin, the slurry pumping port and the slurry return port can be arranged up and down instead of being at the same vertical height.
In other embodiments of the mud density detection system of the mud water bin, the slurry pumping port and the slurry return port can also be positioned in the middle of the mud water bin.
In other embodiments of the mud density detection system of the mud water sump, the arrangement positions of the density meter, the first pressure sensor and the second pressure sensor on the density measurement pipeline may not be between the first valve and the second valve, and the first valve and the second valve can control the on-off of the mud pumping pipeline and the mud returning pipeline, but only conveniently obstruct the mud pumping pump.
In other embodiments of the mud density detection system of the mud water cabin, the pumping mud pump, the densimeter, the first pressure sensor, the second pressure sensor, the first valve and the second valve may be located in the air cushion cabin, and the mud pumping pipeline and the mud returning pipeline only extend into the air cushion cabin.
The embodiment of the utility model discloses well slurry shield constructs the machine does: the slurry shield machine comprises a slurry density detection system of the slurry cabin, and the concrete structure of the slurry density detection system of the slurry cabin is the same as that of the slurry density detection system of the slurry cabin in the embodiment, and the detailed description is not repeated here.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A mud sump mud density detection system, comprising:
the front end of the shield body is provided with a muddy water bin;
the density measuring pipeline comprises a slurry pumping pipeline and a slurry return pipeline, the slurry pumping pipeline is provided with a slurry pumping port communicated with the muddy water bin, and the slurry return pipeline is provided with a slurry return port communicated with the muddy water bin;
the pumping slurry pump is connected to the density measuring pipeline and used for pumping the slurry in the slurry bin into the density measuring pipeline and discharging the slurry back into the slurry bin;
the densimeter is arranged on the density measuring pipeline and used for detecting the density of the slurry;
its characterized in that, muddy water storehouse mud density detecting system still includes:
the first pressure sensor is connected to the density measuring pipeline, is positioned at the upstream of the pumping mud pump and is used for detecting the inlet pressure of the pumping mud pump;
the second pressure sensor is connected to the density measuring pipeline, is positioned at the downstream of the pumping mud pump and is used for detecting the outlet pressure of the pumping mud pump;
the first valve is connected to the slurry pumping pipeline and used for controlling the on-off of the slurry pumping pipeline;
the second valve is connected to the slurry return pipeline and used for controlling the on-off of the slurry return pipeline;
the arrangement position of the pumping mud pump on the density measuring pipeline is located between the first valve and the second valve.
2. The mud density detection system for the mud water bin as claimed in claim 1, wherein the shield body comprises an air cushion bin arranged behind the mud water bin and a middle shield arranged behind the air cushion bin, the mud pumping pipeline and the mud returning pipeline respectively extend through the air cushion bin to the inside of the middle shield, and the mud pumping pump, the density meter, the first pressure sensor, the second pressure sensor, the first valve and the second valve are all located inside the middle shield.
3. The mud density detection system for the muddy water storehouse according to claim 1 or 2, wherein the density meter, the first pressure sensor and the second pressure sensor are arranged on the density measuring pipeline at positions between the first valve and the second valve.
4. The mud sump mud density detection system of claim 1 or 2, wherein the mud pumping port and the mud return port are both located at the top of the mud sump.
5. The mud density detection system of claim 4, wherein the slurry pumping port and the slurry return port are located at the same vertical height, a vertical axis passing through the center of the shield body is defined as a first axis, and the slurry pumping port and the slurry return port are arranged in bilateral symmetry relative to the first axis.
6. The mud density detection system of claim 1 or 2, wherein the pumping mud pump and the first pressure sensor are both connected to the slurry pumping line, and the second pressure sensor is connected to the slurry return line.
7. The mud sump mud density detection system of claim 1 or 2, wherein the densitometer is mounted on the mud return line downstream of the second pressure sensor.
8. The mud water sump mud density detection system of claim 1 or 2, wherein the densitometer is a radioactive density detector.
9. The mud density detection system of claim 1 or 2, wherein the first valve and the second valve are pneumatic knife gate valves.
10. A slurry shield machine is characterized by comprising the slurry density detection system of the slurry cabin as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120213563.4U CN214334581U (en) | 2021-01-26 | 2021-01-26 | Slurry density detection system of slurry storehouse and slurry shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120213563.4U CN214334581U (en) | 2021-01-26 | 2021-01-26 | Slurry density detection system of slurry storehouse and slurry shield machine |
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| CN214334581U true CN214334581U (en) | 2021-10-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857518A (en) * | 2021-02-22 | 2021-05-28 | 中铁工程装备集团有限公司 | Liquid level switch device and shield machine |
| CN115788461A (en) * | 2022-12-16 | 2023-03-14 | 盾科工程装备有限公司 | Muddy water suction type shield machine |
-
2021
- 2021-01-26 CN CN202120213563.4U patent/CN214334581U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857518A (en) * | 2021-02-22 | 2021-05-28 | 中铁工程装备集团有限公司 | Liquid level switch device and shield machine |
| CN115788461A (en) * | 2022-12-16 | 2023-03-14 | 盾科工程装备有限公司 | Muddy water suction type shield machine |
| CN115788461B (en) * | 2022-12-16 | 2023-08-04 | 盾科工程装备有限公司 | Slurry suction type shield tunneling machine |
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