Large-height-difference settlement measuring device based on hydrostatic balance principle

Abstract

The utility model discloses a large height difference settlement measuring device based on a hydrostatic balance principle, which comprises a high-level measuring point liquid tank arranged at a first measuring point and a low-level measuring point liquid tank arranged at a second measuring point, and the first measuring point is higher than the second measuring point; the high-level measuring point liquid tank is communicated with the low-level measuring point liquid tank through a communicating pipe, and incompressible or low-compressibility fluid media are arranged in the high-level measuring point liquid tank and the low-level measuring point liquid tank respectively; a displacement part is further arranged in the low-position measuring point liquid tank, and when the high-position measuring point liquid tank or the low-position measuring point liquid tank displaces, the fluid medium drives the displacement part to displace in the axial direction of the low-position measuring point liquid tank; and the second measuring point is also provided with a measuring piece for monitoring and measuring the displacement amount of the displacement piece. According to the utility model, on the basis of a fluid static balance principle, height difference information between two measuring points is calculated by utilizing displacement change of a mechanical piston mechanism through liquid pressure, and the problem of range limitation of a traditional sensor is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering detection technical field especially relates to a big height difference settlement measuring device based on fluid static force balance principle. BACKGROUND

[0002] In the field of infrastructure (such as bridge, tunnel, building, etc.) settlement automation monitoring, traditional displacement meter or pressure type sensor is often used to measure the relative settlement between two points. However, in practical application, when the height difference between adjacent measuring points is large, the range of existing sensor often cannot meet the demand, resulting in the decline of measurement accuracy or even the failure to complete the measurement task. Therefore, there is an urgent need for a method that can solve the problem of large height difference settlement measurement to realize the settlement measurement task under large height difference condition. SUMMARY

[0003] The utility model discloses a big height difference settlement measuring device based on fluid static force balance principle, based on fluid static force balance principle, the height difference information between two measuring points is calculated through the displacement change of the piston mechanism of liquid pressure, and the range limitation problem of traditional sensor is solved.

[0004] The utility model discloses a big height difference settlement measuring device based on fluid static force balance principle, based on fluid static force balance principle, the height difference information between two measuring points is calculated through the displacement change of the piston mechanism of liquid pressure, and the range limitation problem of traditional sensor is solved.

[0005] A big height difference settlement measuring device based on fluid static force balance principle, comprising a high measuring point liquid tank arranged at a first measuring point and a low measuring point liquid tank arranged at a second measuring point, wherein the first measuring point is higher than the second measuring point.

[0006] The high measuring point liquid tank is communicated with the low measuring point liquid tank through a communication pipe, and the high measuring point liquid tank and the low measuring point liquid tank are respectively provided with fluid medium with incompressibility or low compressibility.

[0007] The low measuring point liquid tank is further provided with a displacement part, and the fluid medium drives the displacement part to axially displace along the low measuring point liquid tank when the high measuring point liquid tank or the low measuring point liquid tank is displaced.

[0008] The second measuring point is further provided with a measuring part for monitoring and measuring the displacement amount of the displacement part.

[0009] Further, the displacement part is in the shape of U in cross section, is slidably arranged in the low measuring point liquid tank and is adapted to the low measuring point liquid tank, and the displacement part and the low measuring point liquid tank form a piston structure.

[0010] Further, the fluid medium is silicone oil.

[0011] Further, the measuring part is a displacement meter or a laser range finder.

[0012] Further, the low-position measuring point liquid tank is arranged at the second measuring point through the mounting base.

[0013] Further, the measuring member is connected with the mounting base through the connecting rod.

[0014] Further, the measuring member is arranged above the displacement member.

[0015] Further, the low-position measuring point liquid tank and the displacement member are made of a material with low friction coefficient.

[0016] The beneficial effects of the present application are as follows:

[0017] The present application is based on the principle of hydrostatic force balance, and the height difference information between two measuring points is calculated through the displacement change of the mechanical piston mechanism using liquid pressure, thereby solving the problem of range limitation of the traditional sensor. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The present application is based on the principle of hydrostatic force balance, and the height difference information between two measuring points is calculated through the displacement change of the mechanical piston mechanism using liquid pressure, thereby solving the problem of range limitation of the traditional sensor.

[0019] In the figure, 1 is a first measuring point; 2 is a high-position measuring point liquid tank; 3 is a second measuring point; 4 is a low-position measuring point liquid tank; 5 is a communication pipe; 6 is a fluid medium; 7 is a displacement member; 8 is a measuring member; 9 is a mounting base; and 10 is a connecting rod. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the present application.

[0021] Referring to Figure 1 , the present application provides a technical solution:

[0022] Embodiment:

[0023] As Figure 1 shown, a large-height-difference settlement measuring device based on the principle of hydrostatic force balance comprises a high-position measuring point liquid tank 2 arranged at a first measuring point 1 and a low-position measuring point liquid tank 4 arranged at a second measuring point 3 through a mounting base 9, wherein the first measuring point 1 is higher than the second measuring point 3.

[0024] The high-position measuring point liquid tank 2 is in communication with the low-position measuring point liquid tank 4 through a communication pipe 5, and the high-position measuring point liquid tank 2 and the low-position measuring point liquid tank 4 are respectively provided with an incompressible or low-compressibility fluid medium 6, wherein the fluid medium 6 can be but is not limited to silicone oil.

[0025] The low point measuring point liquid tank 4 is also provided with a displacement member 7, when the high point measuring point liquid tank 2 or the low point measuring point liquid tank 4 is displaced, the fluid medium 6 drives the displacement member 7 to displace axially along the low point measuring point liquid tank 4;

[0026] The mounting seat 9 is provided with a measuring member 8 for monitoring and measuring the displacement amount of the displacement member 7 through the connecting rod 10, the measuring member 8 is located above the displacement member 7, the measuring member 8 is a displacement meter or a laser range finder, and the measuring member 8 can also be selected according to actual needs. Other high-precision displacement sensors.

[0027] The cross section of the displacement member 7 is U-shaped, the displacement member 7 is slidingly arranged in the low point measuring point liquid tank 4 and is matched with the low point measuring point liquid tank 4, and the displacement member 7 and the low point measuring point liquid tank 4 form a piston structure.

[0028] The low point measuring point liquid tank 4 and the displacement member 7 are made of a material with a low friction coefficient. The material with a low friction coefficient can be but is not limited to PTFE composite material and silicon nitride ceramic. In addition, the material of the low point measuring point liquid tank 4 and the displacement member 7 can be normally selected according to cost, and then a DLC coating is arranged on the inner wall of the low point measuring point liquid tank 4 and the outer wall of the displacement member 7.

[0029] 1. The top opening of the high point measuring point liquid tank 2 is communicated with the atmosphere; 2. The low point measuring point liquid tank 4 constitutes a "piston cylinder" of the piston structure, and the displacement member 7 constitutes a "piston rod" of the piston structure.

[0030] When the height difference between the first measuring point 1 and the second measuring point 3 changes, the liquid pressure in the communication pipe 5 changes, and the fluid under the action of static force balance will cause the displacement member 7 at the low point to displace correspondingly. By measuring the displacement amount of the displacement member 7, the relative settlement amount between the two points can be calculated. The settlement amount calculation process is as follows:

[0031] Let the height difference from the liquid surface of the first measuring point 1 to the second measuring point 3 be L, and the height difference from the liquid surface of the first measuring point 1 to the top of the piston structure inside the second measuring point 3 be h, then according to the principle of fluid static equilibrium, it is known that:

[0032]

[0033] Among them:

[0034] The pressure at the top of the piston structure inside the second measuring point 3

[0035] The density of the liquid

[0036] The acceleration of gravity

[0037] According to the height difference of the measuring point, the weight of the piston structure is adjusted, so that the piston structure is in the middle position under static state:

[0038]

[0039] Wherein:

[0040] The weight of the piston structure body plus the weight

[0041] The inner top area of the piston structure

[0042] When the height difference L changes, according to the principle of hydrostatic equilibrium, h tends to be constant under the action of pressure, so it can be known that:

[0043]

[0044] Wherein:

[0045] C - relative settlement

[0046] The change amount of the height difference L

[0047] The displacement amount of the displacement part 7

[0048] The utility model discloses based on the principle of hydrostatic equilibrium, through the displacement change of liquid pressure utilization mechanical piston mechanism to calculate the height difference information between two measuring points, solved the problem that the traditional sensor exists range limit.

[0049] The above only is the preferred implementation mode of the utility model, and it is understood that the utility model is not limited to the form disclosed in this paper, and should not be regarded as the exclusion of other embodiments, and can be used in various other combinations, modifications and environment, and can be changed in the range of the conception described in this paper, through the above teaching or the technology or knowledge of related field, and the change and variation of the person of the field without departing from the spirit and scope of the utility model, then all should be in the protection scope of the utility model claims attached.

Claims

1. A large height difference settlement measuring device based on the principle of hydrostatic balance, characterized in that: The high point liquid tank is arranged at a first measuring point, and the low point liquid tank is arranged at a second measuring point, the first measuring point being higher than the second measuring point; The high point liquid tank is communicated with the low point liquid tank through a communication pipe, and the high point liquid tank and the low point liquid tank are respectively provided with fluid media with incompressibility or low compressibility; The low point liquid tank is further provided with a displacement member, and when the high point liquid tank or the low point liquid tank is displaced, the fluid media drives the displacement member to axially displace in the low point liquid tank; The second measuring point is further provided with a measuring member for monitoring and measuring the displacement amount of the displacement member.

2. The large height difference settlement measuring device based on the principle of hydrostatic balance according to claim 1, characterized in that: The displacement member has a U-shaped cross section, is slidingly arranged in the low point liquid tank and is adapted to the low point liquid tank, and the displacement member and the low point liquid tank form a piston structure.

3. The large height difference settlement measuring device based on the principle of hydrostatic balance according to claim 1, characterized in that: The fluid media is silicon oil.

4. The large height difference settlement measuring device based on the principle of hydrostatic balance according to claim 1, characterized in that: The measuring member is a displacement meter or a laser range finder.

5. The large height difference settlement measuring device based on the principle of hydrostatic balance according to claim 4, characterized in that: The low point liquid tank is arranged at the second measuring point through a mounting seat.

6. The large height difference settlement measuring device based on the principle of hydrostatic balance according to claim 5, characterized in that: The measuring member is connected with the mounting seat through a connecting rod.

7. The large height difference settlement measuring device based on the principle of hydrostatic balance according to claim 6, characterized in that: The measuring member is arranged above the displacement member.

8. The large height difference settlement measuring device based on the principle of hydrostatic balance according to claim 2, characterized in that: The low point liquid tank and the displacement member are made of a material with low friction coefficient.

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