CN216111554U - Switching protection device of oil drainage system of shield hydraulic equipment - Google Patents
Switching protection device of oil drainage system of shield hydraulic equipment Download PDFInfo
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- CN216111554U CN216111554U CN202121646424.7U CN202121646424U CN216111554U CN 216111554 U CN216111554 U CN 216111554U CN 202121646424 U CN202121646424 U CN 202121646424U CN 216111554 U CN216111554 U CN 216111554U
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Abstract
A switching protection device of an oil drainage system of shield hydraulic equipment is arranged on an oil drainage path between an underground shield part and a ground shield part and comprises an oil tank, a switching power pump set, a detection device and a control box; the switching power pump set is integrally arranged on the oil tank, a motor of the switching power pump set is arranged on an oil tank shell, and a hydraulic pump is arranged in the oil tank; the detection device and the control box are installed on the oil tank shell. The utility model has the advantages of compact arrangement, convenient transportation, low working noise, no secondary pollution to the system caused by the environment and high reliability.
Description
Technical Field
The utility model belongs to the field of shield hydraulic equipment, and particularly belongs to the field of switching devices of oil drainage systems of shield hydraulic equipment.
Background
In the field of tunnels constructed by a shield method, due to the limitation of the space size of a shield starting well, a shield needs to be switched when the shield starts, namely, a shield host is firstly put into a well for assembly, and a shield frame and supporting equipment comprise a hydraulic power system which is placed on the ground and then connected through a switching pipeline. When the height difference between the shield main machine and the shield frame and the matching equipment is large and the transfer pipeline is long, the oil drainage system bears high pressure, and the damage to equipment such as a hydraulic motor and a valve bank can be caused in severe cases.
In such cases, a switching protection device needs to be arranged between the shield host and the shield frame and the supporting equipment. The existing relay pump station for the deep well split starting of the hydraulic system of the shield machine reduces the pressure born by the hydraulic system of the shield machine host by setting the switching protection device as the relay pump station. However, the switching protection device is assembled by a plurality of independent devices, for example, the switching protection device comprises an oil tank, a switching power pump set, a detection device and a control box, pipelines are exposed outside, and considering that the shield construction site environment is complex, the risk of pollution and damage of the switching protection device is high, the working noise of the hydraulic pump is high, and the factors influence the reliability of the switching protection device.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a switching protection device of an oil drainage system of shield hydraulic equipment, which can realize the technical effects of compact arrangement, convenient transportation, reduction of working noise and avoidance of secondary pollution of the environment to the system.
A switching protection device of an oil drainage system of shield hydraulic equipment is arranged on an oil drainage path between an underground shield part and a ground shield part and comprises an oil tank, a switching power pump set, a detection device and a control box. And the oil drainage generated by the shield main machine of the underground shield part is discharged into the oil tank and is further conveyed into the main oil tank of the ground shield part by the switching power pump set.
The switching power pump set is integrally vertically arranged on the oil tank and comprises a motor and a hydraulic pump, wherein the motor is arranged on the upper surface of a shell of the oil tank, and the hydraulic pump is arranged inside the oil tank. The detection device and the control box are both arranged on the shell of the oil tank. And controlling the switching protection device of the oil drainage system of the shield hydraulic equipment through the control box.
According to one embodiment, the detection device comprises a liquid level detection device, a temperature sensor and a pressure sensor, the liquid level detection device is installed on the oil tank and used for detecting the liquid level of oil drainage in the oil tank, the pressure sensor is installed in the oil tank and used for detecting the oil way pressure of the oil drainage system, and the temperature sensor is installed in the oil tank and used for detecting the oil drainage temperature in the oil tank.
According to another embodiment, the liquid level detection device comprises a liquid level sensor and a liquid level meter, wherein the liquid level sensor is installed in the oil tank and used for collecting oil drainage liquid level height signals in the oil tank, the liquid level meter is installed on the oil tank shell and communicated with the inside of the oil tank, and the liquid level meter can read the liquid level height in the oil tank.
According to another embodiment, the control box is in signal connection with the temperature sensor, the level sensor and the pressure sensor. When the system is started, the control box can detect the signal states of the liquid level sensor, the temperature sensor and the pressure sensor, when the signal of the liquid level sensor is the highest value of the liquid level of an oil tank, the control box controls the hydraulic pump to be started, the oil drainage stored in the oil tank is pumped into a main oil tank of a ground shield part, and when the signal of the liquid level sensor is the lowest value of the liquid level of the oil tank, the control box controls the hydraulic pump to stop working; and when any one signal of the temperature sensor or the pressure sensor reaches a preset highest warning value, the control box controls the hydraulic pump to stop working.
According to another embodiment, the oil tank shell is further provided with a buzzer alarm, when the control box receives signal feedback that any one of the temperature sensor, the liquid level sensor or the pressure sensor reaches a preset warning value, the hydraulic pump is controlled to stop, and meanwhile the buzzer alarm sends out a buzzer alarm.
According to another embodiment, a filter is further installed on the oil tank shell, and the oil drainage of the shield host machine flows into the oil tank and is filtered by the filter, so that pollution of the oil drainage to a hydraulic system of the shield machine is reduced.
According to another embodiment, an oil tank cleaning window is further installed on the oil tank shell and fixed to the oil tank shell through bolts, and the oil tank cleaning window can be opened by dismounting the bolts so as to detach, maintain and clean the oil tank and the hydraulic pump, the liquid level sensor, the temperature sensor and the pressure sensor which are installed in the oil tank.
According to another embodiment, the switching protection device of the oil drainage system of the shield hydraulic equipment further comprises adapter joints with different diameters, and the adapter joints are configured to be connecting mechanisms of the switching protection device and the oil drainage way of the shield hydraulic system according to the different diameters of the connected pipelines, so that the same set of switching protection device can be adapted to the shield hydraulic equipment with different diameters of the pipelines.
The utility model provides an integrated switching protection device of an oil drainage system of shield hydraulic equipment, wherein a hydraulic pump is arranged in an oil tank of the switching protection device, and other devices are integrated on an oil tank shell of the switching protection device, so that the working noise of the switching protection device can be reduced, the secondary pollution of the environment to oil drainage of the hydraulic equipment is avoided, the pipeline arrangement of a construction site is reduced, the risk of accidental damage is reduced, the integral carrying is convenient, the disassembly, the maintenance and the cleaning are easy, the reliability of the switching protection device is improved, and the switching protection device can be adapted to shield hydraulic equipment with different pipeline diameters.
Drawings
FIG. 1 is a schematic view of a switching protection device of an oil drainage system of shield hydraulic equipment installed in a shield system;
FIG. 2 is a front view of a switching protection device of an oil drainage system of shield hydraulic equipment;
FIG. 3 is a left side view of a switching protection device of an oil drainage system of shield hydraulic equipment;
FIG. 4 is a top view of a switching protection device of an oil drainage system of shield hydraulic equipment;
fig. 5 is a signal connection schematic diagram of a control box of an oil drainage system of shield hydraulic equipment.
Reference signs mean:
1-an oil tank; 2-switching over a power pump set; 3-a control box; 4-an electric motor; 5-a hydraulic pump; 6-a liquid level meter; 7-sensor group; 8-a filter; 9-oil tank cleaning window; 10-a valve group; 11-screen; 12-a downhole shield portion; 13-a ground shield portion; 14-oil inlet path; 15-oil return path; 16-oil drain; 17-buzzer alarm.
The drawings are for purposes of illustrating the utility model in more detail and are not to be construed as limiting the embodiments of the utility model. The figures only provide parts related to the solution according to the utility model and do not show the complete equipment and all details in strict proportion.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in the initial stage of the shield construction operation, the shield machine is divided into a downhole shield part 12 and a ground shield part 13, the downhole shield part 12 includes a shield main machine and a hydraulic system such as a motor and a valve group, and the ground shield part 13 includes a shield frame, a main oil tank of the hydraulic system, a hydraulic power device, and the like. An oil inlet path 14, an oil return path 15 and an oil drainage path 16 are communicated between the underground shield part 12 and the ground shield part 13, a main oil tank of the ground shield part 13 conveys hydraulic oil to the underground shield part 12 through the oil inlet path 14, the hydraulic oil flows back to the main oil tank through the oil return path 15, oil drainage of the underground shield part 12 in the shield operation process is conveyed back to the main oil tank through the oil drainage path 16, wherein a switching protection device of an oil drainage system of the shield hydraulic equipment is arranged on the oil drainage path 16 and is positioned between the underground shield part 12 and the bottom shield part 13.
A switching protection device of an oil drainage system of shield hydraulic equipment is shown in figures 2, 3 and 4 and comprises an oil tank 1, a switching power pump unit 2, a control box 3 and a detection device. The switching power pump unit 2 is integrally installed on the oil tank 1 in an overhead mode, the switching power pump unit 2 comprises a motor 4 and a hydraulic pump 5, the motor 4 is installed on the upper portion of the oil tank 1, and the hydraulic pump 5 is installed in the oil tank 1 to reduce working noise and reduce pollution of the surrounding environment to a hydraulic system. The control box 3 and the detection device are both arranged on the oil tank 1. Detection device includes level gauge 6 and sensor group 7, and wherein level gauge 6 installs the surface in oil tank 1 side, and sensor 7 installs inside oil tank 1, including level sensor, temperature sensor and pressure sensor, each sensor and control box 3 difference signal connection. And a normally closed oil drain valve is further installed at the bottom of the oil tank 1 and used for draining oil drained from the oil tank during maintenance and cleaning. The lines for respectively supplying power to the switching power pump group 2, the control box 3 and the sensor group 7 of the switching protection device are also connected through a wiring device on the shell of the oil tank 1, and the structures are omitted from the drawing and are not shown. Each part of the switching protection device is integrated on the oil tank 1, so that scattered pipeline arrangement on site is reduced, the risk of accidental damage is reduced, and the whole carrying of equipment is facilitated.
When the shield machine works, the oil drainage generated by the host of the underground shield part 12 is filtered by the filter 8 and is drained into the oil tank 1 of the switching protection device, and then is conveyed back to the main oil tank of the ground shield part 13 by the switching power pump set 2, so that the pollution risk of the oil drainage returned by the underground shield host to a hydraulic system is reduced.
The level sensor in level gauge 6 and the sensor group 7 can provide the hydraulic oil level information in oil tank 1, wherein level gauge 6 is the liquid level pipe with the inside intercommunication of oil tank, need not the circular telegram just can directly read out the liquid level information in the oil tank 1 through the liquid level height in the liquid level pipe. The liquid level sensor converts the liquid level height information into an electric signal and transmits the electric signal to the control box, and the two detection modes improve the reliability of the switching protection device.
As shown in fig. 5, the control box 3 controls the switching power pump unit 2 to start and stop, and is respectively connected with each sensor in the sensor group 7 and the buzzer alarm 17 mounted on the control box through signals. The instantaneous information of the level, temperature and pressure inside the tank can be read through the screen 11 of the control box 3. When the switching protection device operates, when the output signal of the liquid level sensor reaches the preset highest value of the liquid level of the oil tank, the control box 3 controls the switching power pump set 2 to be started, and the oil drainage in the oil tank 1 is discharged into the main oil tank of the ground shield part 13 through the valve group 10. When the liquid level, temperature or pressure signal of the sensor group 7 reaches the preset warning value (the oil drainage liquid level is lower than the set minimum liquid level, the temperature exceeds the warning value or the oil circuit pressure exceeds the warning value), the control box 3 controls the switching power pump group 2 to stop, the screen 11 on the control box 3 displays warning information, and meanwhile, the buzzer alarms to sound.
According to one embodiment, the hydraulic pump 5 of the switch power pump group 2 is a fixed displacement pump.
According to another embodiment, the hydraulic pump 5 of the switch power pump group 2 is a variable displacement pump.
According to one embodiment, the level sensors in the sensor group 7 are acoustic level gauges, the temperature sensors are temperature sensing thermocouples, and the pressure sensors are diffused silicon pressure sensors mounted on the valve block 10.
According to another embodiment, the temperature level transmitter, in which the level sensors and the temperature sensors of the sensor group 7 are integrated, is integrated in the tank, and the pressure sensor is a capacitive pressure sensor mounted on the valve group 10.
The oil tank cleaning window 9 is fastened on the oil tank 1 through bolts and is a toughened glass plate embedded in a metal frame, and a nitrile rubber sealing ring is arranged at the contact position of the cleaning window 9 and the oil tank 1. When the switching protection device of the oil drainage system of the shield hydraulic equipment breaks down or needs to be cleaned, the hydraulic oil in the oil tank is discharged through the oil drainage valve, then the fastening bolt is removed to open the oil tank cleaning window 9, and the maintenance, cleaning and maintenance can be conveniently carried out on the inside of the oil tank and parts installed in the oil tank, such as the sensor group 7 and the hydraulic pump 5.
According to another embodiment, the sealing ring used for the oil tank cleaning window 9 is an oil-resistant sealing material such as fluororubber, polyurethane, polytetrafluoroethylene, and the like.
According to another embodiment, the valve group 10 is configured with adapters with different calibers, and the adapters with different calibers can be selected according to the diameters of the connected pipelines, so that the installation and connection of the switching protection devices of the oil drainage system of the same shield hydraulic equipment on different equipment are realized.
The present invention has been described above with reference to embodiments, but it should be understood that the scope of protection of the present invention is not limited to the above embodiments. Various modifications may be made, or equivalents may be substituted, for elements thereof without departing from the scope of the utility model, and features shown in the embodiments may be combined in any suitable manner without departing from the scope of the utility model.
Claims (9)
1. The utility model provides a shield constructs switching protection device of hydraulic equipment draining system, sets up on the draining way between shield part and the ground shield part in the pit, includes oil tank, switching power pump package, detection device and control box, its characterized in that:
the switching power pump set comprises a motor and a hydraulic pump, and is vertically mounted on the oil tank in an integral mode, wherein the motor is vertically mounted on the upper portion of the oil tank, and the hydraulic pump is mounted in the oil tank;
the detection device and the control box are mounted on a shell of the oil tank.
2. The switching protection device of the oil drainage system of the shield hydraulic equipment as claimed in claim 1, wherein the detection device comprises a liquid level detection device, a pressure sensor and a temperature sensor, the liquid level detection device is installed on the oil tank and used for detecting the liquid level of oil drainage in the oil tank, the pressure sensor is installed in the oil tank and used for detecting the oil circuit pressure of the oil drainage system, and the temperature sensor is installed in the oil tank and used for detecting the oil drainage temperature in the oil tank.
3. The transit protection device of the oil drainage system of the shield hydraulic equipment as claimed in claim 2, wherein the liquid level detection device comprises a liquid level sensor and a liquid level meter for respectively detecting the liquid level of oil drainage in the oil tank, the liquid level sensor is mounted in the oil tank, and the liquid level meter is mounted on the oil tank shell.
4. The switching protection device of the oil drainage system of the shield hydraulic equipment as claimed in claim 3, wherein the control box is in signal connection with the liquid level sensor, the temperature sensor and the pressure sensor respectively.
5. The switching protection device of the oil drainage system of the shield hydraulic equipment as claimed in claim 4, wherein the control box is configured as a safety device of the oil drainage protection system of the shield hydraulic equipment, and when a signal returned by the liquid level sensor, the temperature sensor or the pressure sensor reaches a preset warning value, the hydraulic pump is controlled to stop.
6. The switching protection device of the oil drainage system of the shield hydraulic equipment according to claim 5, further comprising a buzzer alarm, wherein the buzzer alarm gives an alarm when any one of the liquid level sensor, the temperature sensor or the pressure sensor returns a signal reaching a preset alarm value.
7. The transfer protection device of a shield hydraulic equipment oil drainage system of any one of claims 1-6, wherein the transfer protection device further comprises a filter, and the filter is installed in the oil tank.
8. The transition protection device of an oil drainage system of shield hydraulic equipment according to any one of claims 1 to 6, wherein the oil tank further comprises an oil tank cleaning window, and the oil tank cleaning window is mounted on the oil tank shell.
9. The transition protection device of the oil drainage system of the shield hydraulic equipment as claimed in claim 1, wherein the oil tank further comprises a transition joint with different diameters, and the transition joint is configured into a connecting mechanism of the oil drainage path and the transition protection device according to the diameter of a connected pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121646424.7U CN216111554U (en) | 2021-07-19 | 2021-07-19 | Switching protection device of oil drainage system of shield hydraulic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121646424.7U CN216111554U (en) | 2021-07-19 | 2021-07-19 | Switching protection device of oil drainage system of shield hydraulic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216111554U true CN216111554U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121646424.7U Active CN216111554U (en) | 2021-07-19 | 2021-07-19 | Switching protection device of oil drainage system of shield hydraulic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216111554U (en) |
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2021
- 2021-07-19 CN CN202121646424.7U patent/CN216111554U/en active Active
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