Active constant temperature type hydrostatic level system

Abstract

The application discloses an active constant-temperature type hydrostatic leveling system, which comprises a plurality of hydrostatic levels and a reference liquid storage barrel connected in series. The first loop and the second loop are arranged, so that the liquid in the first loop is kept at a constant temperature, the temperature of the circulating liquid is controlled from the inside or the outside, active temperature control is realized, the state of the system during measurement can be actively controlled to be consistent with the state during factory calibration, the bubbles in the first loop are discharged during the liquid circulation, the bubbles overflow from the top of the liquid level of the reference liquid storage barrel and then leave the first loop, no bubbles exist in the hydrostatic leveling system, the hydrostatic leveling system always has high measurement precision, the bubbles can be discharged at the same time when the active temperature control is performed, the barrel, the micro water pump and the liquid level sensing device are arranged, liquid can be quantitatively supplemented, the accuracy of the reference point is always ensured, the measurement precision of the whole system is ensured, and manual liquid supplement is not needed, and the application is especially suitable for use in occasions with large temperature changes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vertical displacement or settlement deformation detection equipment, in particular to an active constant-temperature static leveling system. BACKGROUND

[0002] The static level gauge can be divided into two categories according to the measurement principle: measuring liquid level height and measuring pressure difference.

[0003] There are communicating pipe type static level gauge, magnetostrictive static level gauge, capacitive static level gauge, photoelectric static level gauge, ultrasonic static level gauge, laser static level gauge, inclination static level gauge and vibrating string static level gauge, etc.

[0004] Taking the pressure difference type static level gauge as an example:

[0005] The pressure difference type static level gauge is mainly composed of a core seat 1-4, a top cover 1-3, a pressure core 1-2, a circuit board 1-5, a bottom cover 1-1, and a gas pipe joint. It is suitable for measuring various detections such as subway tunnels, buildings, dams, bridges, urban comprehensive pipe galleries, and pavements.

[0006] The pressure difference type static level gauge detects the change of the height difference of the settlement point by using the pressure difference in the sealed liquid. When the reference point settlement is zero, the change of the height difference between the reference point and the measurement point is the settlement value of the measured point when the level gauge settlement changes with the measured point. The settlement value will be shown by the pressure difference between the reference point and the measured point.

[0007] The factors affecting the measurement accuracy of the system mainly come from the temperature drift of the level gauge pressure core 1-2 and the evaporation of the system liquid. When the temperature drift and the evaporation of the system liquid occur, the measurement accuracy cannot be guaranteed.

[0008] Among them, no matter which static level gauge is selected, temperature change will have a great influence on the measurement accuracy:

[0009] 1. During actual installation and use, the temperatures of static level gauges at different positions are different. In addition to the temperature drift of the detection elements such as the pressure core 1-2 in the static level gauge, the liquid density in the static level gauge will also be different. The relationship between liquid density and temperature change is nonlinear, and manual secondary correction is difficult to correct.

[0010] 2. Temperature change will cause thermal expansion and contraction of the pipeline. For example, if the pipeline expands, the liquid level of the measurement point will drop, further causing errors.

[0011] 3. And too high temperature will cause the liquid in the reference liquid storage barrel 6 to evaporate, directly causing errors during measurement. SUMMARY

[0012] The application aims to provide an active constant-temperature static water level system to solve the problems in the background art.

[0013] To achieve the above-mentioned purpose, the application provides the following technical solutions.

[0014] An active constant-temperature static water level system comprises a plurality of static water level meters and a reference liquid storage barrel connected in series, the plurality of static water level meters and the reference liquid storage barrel form a first loop through a communication pipe, and a liquid for detecting a height difference change amount is arranged in the first loop, wherein the liquid is a constant-temperature liquid.

[0015] The liquid circulates in the first loop under the action of a circulating pump, and the liquid maintains a constant temperature through the control of a cold and hot adjusting unit and a temperature detecting unit.

[0016] Alternatively, the plurality of static water level meters, the reference liquid storage barrel and the first loop formed by the plurality of static water level meters and the reference liquid storage barrel are all located in a cavity with a constant internal temperature.

[0017] The cavity comprises a first constant-temperature cavity arranged outside the differential pressure static water level meter, a second constant-temperature cavity arranged outside the reference liquid storage barrel and a third constant-temperature cavity arranged outside the communication pipe, the first constant-temperature cavity, the second constant-temperature cavity and the third constant-temperature cavity form a second loop, and a constant-temperature control mechanism for adjusting the temperature in the cavity is arranged in the third constant-temperature cavity.

[0018] The active static water level system further comprises an adjusting barrel, when the liquid maintains a constant temperature through the control of the cold and hot adjusting unit and the temperature detecting unit, an overflow pipe is arranged between the adjusting barrel and the reference liquid storage barrel, the communication position of the overflow pipe with the reference liquid storage barrel is higher than the communication position of the overflow pipe with the adjusting barrel, the overflow pipe is arranged at a preset liquid level height, a liquid supplementing pipe through which a micro water pump can supplement the liquid in the adjusting barrel into the reference liquid storage barrel is further arranged between the reference liquid storage barrel and the adjusting barrel, and a liquid level sensing device for detecting the liquid level height in the reference liquid storage barrel is arranged in the reference liquid storage barrel.

[0019] The active static water level system further comprises an adjusting barrel, an overflow pipe is arranged between the adjusting barrel and the reference liquid storage barrel, the communication position of the overflow pipe with the reference liquid storage barrel is higher than the communication position of the overflow pipe with the adjusting barrel, the overflow pipe is arranged at a preset liquid level height, a liquid supplementing pipe through which a micro water pump can supplement the liquid in the adjusting barrel into the reference liquid storage barrel is further arranged between the reference liquid storage barrel and the adjusting barrel, and a liquid level sensing device for detecting the liquid level height in the reference liquid storage barrel is arranged in the reference liquid storage barrel, wherein the adjusting barrel is arranged in the cavity.

[0020] The differential pressure static water level gauge comprises a liquid storage cavity, a high point part is formed by smoothly extending the top of the liquid storage cavity upwards, the high point part is connected with a liquid outlet, and the liquid outlet is arranged horizontally or upwards from the high point part.

[0021] The cross section shape of the connecting side of the liquid storage cavity and the liquid outlet is arc-shaped, the highest point of the arc-shaped part is the high point part, the height of the connecting surface of the liquid outlet and the liquid storage cavity is higher than the height of the connecting surface of the liquid inlet and the liquid storage cavity, and the liquid outlet and the liquid inlet are vertically distributed.

[0022] The beneficial effects of the present application are:

[0023] 1. By arranging the first loop and the second loop, the liquid in the first loop is kept at a constant temperature, the temperature of the circulating liquid is controlled from the inside or the outside, active temperature control is realized, secondary calibration is not needed, and no matter how the external temperature changes, the state of the system during measurement can be actively controlled to be consistent with the state during factory calibration, so that the entire system is always in a stable state with high precision.

[0024] 2. During the liquid circulation process, the gas bubbles in the first loop are discharged together, the gas bubbles overflow from the top of the liquid level of the reference liquid storage barrel and then leave the first loop, so that there are no gas bubbles in the static water level system, and the static water level system always has high measurement precision, that is, the bubbles are discharged while the temperature is actively controlled.

[0025] 3. By adjusting the barrel, the micro water pump and the liquid level sensing device, the liquid can be quantitatively supplemented, the accuracy of the reference point is always guaranteed, the measurement accuracy of the entire system is guaranteed, manual liquid supplement is not needed, it is particularly suitable for use in environments with large temperature changes, and factors such as liquid level evaporation and pipeline deformation will not affect the change of the reference liquid level. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of example one in the present application;

[0027] Figure 2 It is a structural schematic diagram of example two in the present application;

[0028] Figure 3 It is a structural schematic diagram of the static water level gauge in example one and two in the present application;

[0029] Figure 4 It is a structural schematic diagram of the static water level gauge in example three in the present application;

[0030] Figure 5 It is a structural schematic diagram of the static water level gauge in example four in the present application;

[0031] Figure 6 This is a schematic diagram of the static level in Embodiment 5 of the present invention;

[0032] Figure 7 This is a schematic diagram of the static level in Embodiment Six of the present invention;

[0033] In the diagram: 1. Static level; 2. Temperature detection unit; 3. Connecting pipe; 4. Heating and cooling control unit; 5. Circulating pump; 6. Reference storage tank; 7. Adjustment tank; 8. Controller; 9. Liquid level sensor; 10. Miniature water pump; 11. First thermostatic chamber; 12. Second thermostatic chamber;

[0034] 1-1. Bottom cover; 1-2. Pressure core; 1-3. Top cover; 1-4. Core seat; 1-5. Circuit board; 1-6. Liquid inlet; 1-7. Liquid outlet; 1-8. Air inlet; 1-9. Air outlet; 1-10. Liquid storage chamber. Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0036] Example 1

[0037] Please see Figure 1 and Figure 3 This invention provides an active constant-temperature hydrostatic leveling system, which includes multiple differential pressure hydrostatic leveling instruments 1 connected in series, a reference liquid storage tank 6, and a controller 8 for controlling the operation of the hydrostatic leveling system. The multiple hydrostatic leveling instruments 1 and the reference liquid storage tank 6 form a first loop through a connecting pipe 3. The first loop is provided with a liquid for detecting changes in elevation difference, and the liquid is a constant-temperature liquid.

[0038] The liquid circulates in the first loop under the action of the circulating pump 5, and the temperature of the liquid is kept constant by the control of the heating and cooling regulating unit 4 and the temperature detection unit 2.

[0039] The heating and cooling control unit 4 can be a hot and cold water exchanger, and the temperature detection unit 2 can be equipped with a temperature sensor in the first circuit.

[0040] The active hydrostatic leveling system also includes an adjusting tank 7. An overflow pipe is provided between the adjusting tank 7 and the reference storage tank 6. The connection point between the overflow pipe and the reference storage tank 6 is higher than the connection point between the overflow pipe and the adjusting tank 7. The overflow pipe is set at a preset liquid level height. A replenishment pipe is also provided between the reference storage tank 6 and the adjusting tank 7, which can replenish the liquid inside the adjusting tank 7 to the reference storage tank 6 through a micro water pump 10. A liquid level sensing device 9 is provided inside the reference storage tank 6 to detect the liquid level height inside the reference storage tank 6.

[0041] The liquid level sensing device 9 can be a liquid level sensor.

[0042] Since the liquid level of the reference liquid storage tank 6 will change due to evaporation of the liquid in actual application, if the reference point at this time is used for measurement, errors will inevitably occur. The liquid level sensing device 9 and the micro water pump 10 can quantitatively supplement the liquid, always ensure the accuracy of the reference point, and ensure the measurement accuracy of the entire system.

[0043] If the liquid level is higher than the reference liquid level, the liquid will flow back to the adjusting tank 7 from the overflow pipe. If the liquid level is lower than the reference liquid level, the micro water pump 10 can supplement the liquid in the reference liquid storage tank 6 to the reference liquid level. No manual liquid supplement is required, and it is particularly suitable for use in environments with large temperature changes.

[0044] Installation and debugging process:

[0045] The differential pressure type hydrostatic level gauge 1 is installed in series on site. After the reference liquid storage tank 6 and the circulating pump 5 are connected to the cold and hot adjusting unit 4, they are connected to the first differential pressure type hydrostatic level gauge 1. The outlet of the last differential pressure type hydrostatic level gauge 1 in the series is connected to the reference liquid storage tank 6 through the communication pipe 3. The entire device is in a communication state.

[0046] When the entire equipment is working, the liquid in the first loop will always be maintained at the designed temperature. When a change in the temperature of the internal liquid is detected, the cold and hot adjusting unit 4 adjusts the liquid entering the hydrostatic level gauge 1 to maintain the designed temperature.

[0047] The temperature sensor can be arranged in multiple for each hydrostatic level gauge 1 to detect the liquid temperature at each position in real time.

[0048] Before actual installation and liquid filling, the temperature of the liquid in the reference liquid storage tank 6 is ensured to reach the designed temperature, and then the liquid is filled into each hydrostatic level gauge 1. The first loop can be additionally provided with a corresponding control valve, which is not described herein.

[0049] After all the differential pressure type hydrostatic level gauges 1 are filled with liquid and left for a predetermined time, the liquid is in a static state, and the stage of measuring the change in the difference in level can be entered. The measurement is required to be performed once every 1-2 hours.

[0050] That is, the temperature of the internal control liquid is ensured, the measurement accuracy of the entire system is ensured, the state of the system during measurement can be actively controlled to be consistent with the state during the factory calibration, and the entire system is always in a stable state with high precision.

[0051] The temperature control method is suitable for the arrangement of any hydrostatic level gauge.

[0052] Solution to air bubbles and regenerative air bubbles:

[0053] In addition, if the temperature changes, the static level gauge 1 will also generate micro-bubbles, and the bubbles will not disappear, which will greatly affect the measurement accuracy.

[0054] Through the first loop, the flow of the liquid before the test can carry the bubbles out of the system, which eliminates the influence of the bubbles on the measurement accuracy when the temperature control effect is achieved.

[0055] In the installation process of the static level gauge, if bubbles are generated, the existing solution needs to calibrate multiple static level gauges in the entire system one by one, which is time-consuming and laborious; since the static level system is generally used in high-speed rail, subway and other projects with window time, in actual use, the static level gauge will also generate regenerated bubbles due to the increase of the external environment temperature, and the calibration workload will be further increased.

[0056] In the liquid circulation process, the bubbles in the first loop are discharged together, the bubbles overflow from the top of the liquid level of the reference liquid storage tank 6 and leave the first loop, so that there are no bubbles in the static level system, and the static level system always has high measurement accuracy, that is, the bubbles are discharged while the temperature is actively controlled.

[0057] In addition, considering that the existing static level gauge 1 has a problem of difficult bubble discharge in the liquid storage cavity 1-10, the static level gauge 1 is provided as follows:

[0058] The static level gauge 1 comprises a liquid storage cavity 1-10, a high point part is generated by a smooth transition extending upward at the top of the liquid storage cavity 1-10, the high point part is connected with a liquid outlet 1-7, the liquid outlet 1-7 is horizontally or upwardly arranged from the high point part, and the circulating liquid enters the liquid storage cavity 1-10 through a liquid inlet 1-6 and fills the liquid storage cavity 1-10, and then flows into the liquid outlet 1-7 from the high point part of the liquid storage cavity 1-10.

[0059] The communication side section shape of the liquid storage cavity 1-10 and the liquid outlet 1-7 is arc-shaped, that is, the top section of the liquid storage cavity 1-10 is arc-shaped, the highest point of the arc is the high point part, the communication surface height of the liquid outlet 1-7 and the liquid storage cavity 1-10 is higher than the communication surface height of the liquid inlet 1-6 and the liquid storage cavity 1-10, the liquid outlet 1-7 is arranged at the top of the top cover 1-3, the liquid inlet 1-6 is arranged at the side surface of the core seat 1-4, the liquid outlet 1-7 and the liquid inlet 1-6 are vertically distributed, and the communication surface height of the liquid outlet 1-7 and the liquid storage cavity 1-10 is higher than the communication surface height of the liquid inlet 1-6 and the liquid storage cavity 1-10.

[0060] Referring to Figure 3, liquid from the right side of the inlet 6, through the liquid storage chamber 10 and filled with liquid storage chamber 10, from the highest point of the arc into the top of the outlet 7, the resulting bubbles will temporarily accumulate in the highest point of the arc.

[0061] In the first circuit inside the liquid circulation flow process, the bubbles will flow out with the liquid quickly, will not stay in the liquid storage chamber 10, and through the practice of the resulting bubbles will be discharged within a few seconds; and whether the factory installation or factory rating bubble can be discharged with the liquid circulation initiative, even slightly inclined pressure core 2 also will not affect the exhaust bubble.

[0062] Even after the installation of static level due to high temperature exposure and other factors make static level inside the regenerative bubble, also can be through the liquid circulation for the second time bubble, always ensure that there is no bubble in the static level, ensure measurement accuracy.

[0063] Example two

[0064] Different from example one is;

[0065] A plurality of static level 1 and the reference liquid storage tank 6 and the first circuit formed by it are located in the internal temperature constant cavity;

[0066] The cavity includes a first constant temperature cavity 11 arranged outside the static level 1, a second constant temperature cavity 12 arranged outside the reference liquid storage tank 6 and a third constant temperature cavity arranged outside the communication pipe 3, the first constant temperature cavity 11, the second constant temperature cavity 12 and the third constant temperature cavity form a second circuit, and the third constant temperature cavity is provided with a constant temperature control mechanism for adjusting the temperature in the cavity.

[0067] Adjusting barrel 7 is arranged in the cavity.

[0068] If the first constant temperature cavity 11, the second constant temperature cavity 12 and the third constant temperature cavity are filled with gas or liquid, the constant temperature control of the filled gas or liquid is realized through the constant temperature control mechanism, and the gas or liquid cold heat exchanger is used as the constant temperature control mechanism.

[0069] The system components such as the communication pipe 3, the static level 1, the reference liquid storage tank 6 and the adjusting barrel 7 form the first constant temperature cavity 12, the second constant temperature cavity 12 and the third constant temperature cavity through the outer cover body, that is, the temperature of the whole system is controlled from the outside to ensure the constant temperature of the liquid in the first circuit, and then ensure that no bubbles are generated, that is, higher measurement accuracy.

[0070] Example three

[0071] Different from example one and two is;

[0072] Reference Figure 4The communication side cross section shape of the liquid storage cavity 1-10 and the liquid outlet 1-7 of the static level gauge 1 is trapezoidal, the short side end of the trapezoidal is the high point part, the communication surface height of the liquid outlet 1-7 and the liquid storage cavity 1-10 is higher than the communication surface height of the liquid inlet 1-6 and the liquid storage cavity 1-10, and the liquid outlet 1-7 and the liquid inlet 1-6 are vertically distributed.

[0073] The liquid outlet 1-7 is arranged on the top of the top cover 1-3, and the liquid inlet 1-6 is arranged on the side of the top cover 1-3.

[0074] The liquid storage cavity 1-10 is formed with a conical surface around, and the bubbles gather at the highest point of the liquid storage cavity 1-10, and the bubbles are discharged together in the liquid flow process.

[0075] Example four

[0076] Different from examples one and two are that

[0077] Referring to Figure 5 The top of the liquid storage cavity 1-10 of the static level gauge 1 is arranged to be inclined, the communication surface height of the liquid storage cavity 1-10 and the liquid outlet 1-7 is higher than the communication surface height of the liquid inlet 1-6 and the liquid storage cavity 1-10, that is, the liquid storage cavity 1-10 is inclined downward from left to right, the high point part is on the side of the liquid storage cavity 1-10 close to the liquid outlet 1-7, the communication surface height of the liquid storage cavity 1-10 and the liquid outlet 1-7 is higher than the communication surface height of the liquid inlet 1-6 and the liquid storage cavity 1-10, the liquid slowly enters the liquid storage cavity 1-10 from the liquid inlet 1-6 with lower height and flows out from the liquid outlet 1-7 with higher height, and the bubbles gathered at the highest point of the left side of the liquid storage cavity 1-10 are discharged together, and the bubbles are not hindered in the process.

[0078] Preferably, the left side top of the liquid storage cavity 1-10 is 1mm higher than the right side top.

[0079] Example five

[0080] Referring to Figure 6 The liquid outlet 1-7 and the liquid inlet 1-6 of the static level gauge 1 are arranged on one of the opposite sides of the top cover 1-3, the communication surface height of the liquid outlet 1-7 and the liquid storage cavity 1-10 is higher than the communication surface height of the liquid inlet 1-6 and the liquid storage cavity 1-10, the liquid outlet 1-7 and the liquid inlet 1-6 are not directly communicated, the high point part is communicated with the liquid outlet 1-7 through the communication channel 1-13, and the communication channel 1-13 is arranged to be horizontal or upward from the high point part.

[0081] The liquid outlet 1-7 and the liquid inlet 1-6 are parallelly distributed.

[0082] Most of the liquid must flow through the liquid storage cavity 10 during the secondary bubble removal, which makes the temperature stabilizing effect of the pressure core 2 better, i.e. the liquid above the pressure core 2 can be kept at a constant temperature during the liquid flow, and the influence of the external environment is reduced.

[0083] Embodiment six

[0084] Referring to Figure 7 The liquid outlet 1-7 and the liquid inlet 1-6 are coaxially arranged, and the liquid outlet 1-7 and the liquid inlet 1-6 are communicated through the straight-through channel 1-14, which is horizontally or upwardly arranged from the liquid inlet 1-6 to the liquid outlet 1-7 and is communicated with the high point.

[0085] The liquid outlet 1-7 and the liquid inlet 1-6 are arranged on one of the opposite sides of the top cover 1-3, the height of the communication surface of the liquid outlet 1-7 with the liquid storage cavity 1-10 is the same as that of the liquid inlet 1-6 with the liquid storage cavity 1-10, the liquid outlet 1-7 and the liquid inlet 1-6 are directly communicated, the generated bubbles will rise and temporarily gather at the highest point of the liquid storage cavity 1-10, and when the liquid is filled or the secondary bubble removal is performed, the bubbles will be removed together with the liquid flow.

[0086] The static water level gauge 1, the temperature detection unit 2, the cold and hot adjusting unit 4, the circulating pump 5 and the liquid level sensing device 9 are all controlled by the controller 8 to realize the normal work of the system, and how the controller 8 realizes the control is the prior art and will not be described here.

[0087] The above description is only the preferred embodiments of the present application, and it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concepts described herein, by the above-mentioned teaching or related technical or knowledge. The modifications and changes made by the person skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. An active constant-temperature hydrostatic leveling system comprising a plurality of hydrostatic levels (1) and a reference liquid storage tank (6) connected in series, the plurality of hydrostatic levels (1) and the reference liquid storage tank (6) forming a first circuit through a communication pipe (3), and a liquid for detecting a difference in height change amount being provided in the first circuit, characterized in that, The liquid is a constant temperature liquid; The liquid circulates in the first loop under the action of the circulating pump (5), and the liquid is kept constant in temperature by the control of the cold and heat regulating unit (4) and the temperature detecting unit (2); The active hydrostatic leveling system further comprises an adjusting barrel (7), when the liquid is kept constant in temperature by the control of the cold and heat regulating unit (4) and the temperature detecting unit (2), an overflow pipe is arranged between the adjusting barrel (7) and the reference liquid storage barrel (6), the communication position of the overflow pipe with the reference liquid storage barrel (6) is higher than the communication position of the overflow pipe with the adjusting barrel (7), the overflow pipe is arranged at a preset liquid level, a liquid supplement pipe for supplementing the liquid in the adjusting barrel (7) into the reference liquid storage barrel (6) by the micro water pump (10) is further arranged between the reference liquid storage barrel (6) and the adjusting barrel (7), the reference liquid storage barrel (6) is provided with a liquid level sensing device (9) for detecting the liquid level in the reference liquid storage barrel (6). Alternatively, the plurality of hydrostatic levels (1) and the reference liquid storage barrel (6) and the first loop formed thereby are located in a cavity with constant internal temperature. The cavity comprises a first constant temperature cavity (11) arranged outside the hydrostatic level (1), a second constant temperature cavity (12) arranged outside the reference liquid storage barrel (6) and a third constant temperature cavity arranged outside the communication pipe (3), the first constant temperature cavity (11), the second constant temperature cavity (12) and the third constant temperature cavity form a second loop, and the third constant temperature cavity is provided with a constant temperature control mechanism for adjusting the temperature in the cavity. The active hydrostatic leveling system further comprises an adjusting barrel (7), when the liquid is kept constant in temperature by the control of the cold and heat regulating unit (4) and the temperature detecting unit (2), an overflow pipe is arranged between the adjusting barrel (7) and the reference liquid storage barrel (6), the communication position of the overflow pipe with the reference liquid storage barrel (6) is higher than the communication position of the overflow pipe with the adjusting barrel (7), the overflow pipe is arranged at a preset liquid level, a liquid supplement pipe for supplementing the liquid in the adjusting barrel (7) into the reference liquid storage barrel (6) by the micro water pump (10) is further arranged between the reference liquid storage barrel (6) and the adjusting barrel (7), the reference liquid storage barrel (6) is provided with a liquid level sensing device (9) for detecting the liquid level in the reference liquid storage barrel (6), and the adjusting barrel (7) is arranged in the cavity.

2. An active thermostatic hydrostatic leveling system according to claim 1, characterized in that, The hydrostatic level (1) comprises a liquid storage cavity (1-10), a high point part is formed at the top of the liquid storage cavity (1-10) by a smooth transition extending upward, the high point part is communicated with a liquid outlet (1-7), and the liquid outlet (1-7) is arranged horizontally or upward from the high point part, the circulating liquid enters the liquid storage cavity (1-10) through a liquid inlet (1-6) and flows into the liquid outlet (1-7) from the high point part of the liquid storage cavity (1-10) after filling the liquid storage cavity (1-10).

3. The active thermostatic hydrostatic leveling system according to claim 2, wherein, The communication side cross section shape of the liquid storage cavity (1-10) and the liquid outlet (1-7) is arc-shaped, the highest point of the arc-shaped part is the high point part, the communication surface height of the liquid outlet (1-7) and the liquid storage cavity (1-10) is higher than the communication surface height of the liquid inlet (1-6) and the liquid storage cavity (1-10), and the liquid outlet (1-7) and the liquid inlet (1-6) are vertically distributed.

4. The active thermostatic hydrostatic leveling system according to claim 2, wherein, The communicating side section shape of the liquid storage cavity (1-10) and the liquid outlet (1-7) is trapezoidal, the short side end of the trapezoidal is the high point part, the communicating surface height of the liquid outlet (1-7) and the liquid storage cavity (1-10) is higher than the communicating surface height of the liquid inlet (1-6) and the liquid storage cavity (1-10), and the liquid outlet (1-7) and the liquid inlet (1-6) are vertically distributed.

5. The active thermostatic hydrostatic leveling system according to claim 2, wherein, The top of the liquid storage cavity (1-10) is obliquely arranged, the side of the liquid storage cavity (1-10) close to the liquid outlet (1-7) is the high point part, and the communicating surface height of the liquid storage cavity (1-10) and the liquid outlet (1-7) is higher than the communicating surface height of the liquid inlet (1-6) and the liquid storage cavity (1-10).

6. The active thermostatic hydrostatic leveling system according to claim 2, wherein, The high point part is communicated with the liquid outlet (1-7) through the communicating channel (1-13), and the communicating channel (1-13) is horizontally or upwardly arranged from the high point part.

7. The active thermostatic hydrostatic leveling system of claim 2, wherein, The liquid outlet (1-7) and the liquid inlet (1-6) are communicated through the straight-through channel (1-14), the straight-through channel (1-14) is horizontally or upwardly arranged from the liquid inlet (1-6) to the liquid outlet (1-7), and the straight-through channel (1-14) is communicated with the high point part.

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