Zero box structure for measuring atmospheric pressure

Abstract

The utility model provides a zero box structure for measuring atmospheric pressure, which comprises a common pipe, a measuring chamber, an outer box and an inner box, the outer box is of a hollow structure, the inner box is arranged in the outer box, the inner box is of a hollow structure, the upper end of the common pipe is communicated with a pipeline of the measuring chamber, and the lower end of the common pipe is communicated with a pipeline of the measuring chamber. The lower end of the common pipe penetrates through the outer wall of the outer box to be communicated with the inner box, N circular through holes are formed in the outer wall of the outer box and the outer wall of the inner box, and external atmospheric pressure enters the outer box through the circular through holes and then enters the inner box from the outer box. One end of the pressure sensor of the measuring chamber enters the inner box through the common pipe to measure the atmospheric pressure value of the inner box and serve as the zero atmospheric pressure value, the pressure reference point is arranged in the zero box, interference of external environment conditions can be avoided, and the zero pressure of the pressure reference point can be stabilized.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure measurement, and particularly designs a zero box structure for measuring atmospheric pressure. Background Art

[0002] When atmospheric pressure needs to be measured, it is usually necessary to keep the atmospheric pressure stable. In the prior art, an air pressure gauge is generally used to detect the ambient atmospheric pressure. However, the temperature, humidity, altitude in the environmental space and the disturbance of the air will all affect the measured atmospheric pressure value, resulting in different air pressure values at each point in the detected environmental space, which will affect the measurement result.

[0003] In view of this, the present invention provides a stable device for measuring the air pressure at a common point. A zero box is set at a fixed point in the required environmental space to ensure the stability of the zero box. The pressure sensor can measure the stable atmospheric pressure value in the zero box through a common pipe, reducing the influence of temperature, humidity, altitude and air disturbance at different points in the environment on the air pressure value. Content of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a zero box structure with a simple installation structure, which is green and energy-saving.

[0005] A zero box structure for measuring atmospheric pressure, which comprises: a common pipe 1, a measurement chamber, an outer box 2 and an inner box 3. It is characterized in that: the outer box 2 is a hollow structure, an inner box 3 is arranged inside the outer box 2, the inner box 3 is a hollow structure, the upper end of the common pipe 1 is communicated with the pipeline of the measurement chamber, the lower end of the common pipe 1 passes through the outer wall of the outer box 2 and is communicated with the inner box 3. N circular through holes 4 are arranged on the outer walls of the outer box 2 and the inner box 3. The external atmospheric pressure enters the outer box 2 through the circular through holes 4 and then enters the inner box 3 from the outer box 2. When the atmospheric pressure of the zero box needs to be measured, one end of the pressure sensor in the measurement chamber enters the inner box 3 through the common pipe 1 to measure the atmospheric pressure value in the inner box 3, which is used as the zero atmospheric pressure value.

[0006] Further, the central lines of the outer box 2, the common pipe 1 and the inner box 3 are on the same straight line.

[0007] Further, the common pipe 1 is welded to the outer walls of the outer box 2 and the inner box 3, and the outer walls of the outer box 2 and the inner box 3 are integrally formed.

[0008] Further, 2-4 rows of air inlet holes are arranged on the lower bottom plate of the outer box 2, and N circular through holes 4 are arranged on each row of air inlet holes. 2-4 rows of air inlet holes are arranged on the front and rear wall plates of the inner box 3, and N circular through holes 4 are arranged on each row of air inlet holes.

[0009] Further, a first box door 5 is provided on one side wall plate of the outer box 2, and the first box door 5 is detachably connected to the outer box 2. A second box door 6 is provided on one side wall plate of the inner box 3 and on the same side as the first box door 5 of the outer box 2, and the second box door 6 is detachably connected to the inner box 3.

[0010] Further, hinges 7 are provided on the left sides of both the first box door 5 and the second box door 6. The first box door 5 is connected to the outer box 2 through the hinge 7 to limit the opening angle of the first box door 5. The second box door 6 is connected to the inner box 3 through the hinge 7 to limit the opening angle of the second box door 6.

[0011] Further, bolts 8 are provided on the right sides of both the first box door 5 and the second box door 6 for fixing the unlocking positions of the box doors.

[0012] Further, 2 - 4 locking lugs 9 are provided on the left and right sides of the rear wall plate of the outer box 2 for the fixed locking of the zero point box.

[0013] Further, the wall plate thicknesses of the outer box 2 and the inner box 3 are between 1.2 mm and 1.4 mm.

[0014] Further, the materials of both the outer box 2 and the inner box 3 are stainless steel.

[0015] The beneficial effects of the present utility model: A zero point box structure for measuring atmospheric pressure, which includes: a common pipe 1, a measurement chamber, an outer box 2, and an inner box 3. The outer box 2 is a hollow structure, and an inner box 3 is provided inside the outer box 2. The inner box 3 is a hollow structure. The upper end of the common pipe 1 is communicated with the pipeline of the measurement chamber, and the lower end of the common pipe 1 passes through the outer wall of the outer box 2 and is communicated with the inner box 3. N circular through - holes 4 are provided on the outer walls of both the outer box 2 and the inner box 3. The external atmospheric pressure enters the outer box 2 through the circular through - holes 4, and then enters the inner box 3 from the outer box 2. When it is necessary to measure the atmospheric pressure of the zero point box, one end of the pressure sensor in the measurement chamber enters the inner box 3 through the common pipe 1 to measure the atmospheric pressure value in the inner box 3, which is used as the zero point atmospheric pressure value. The present utility model sets the pressure reference point inside the zero point box, which can avoid being interfered by external environmental conditions and enables the zero - point pressure of the pressure reference point to be stable. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a zero point box structure for measuring atmospheric pressure.

[0017] Figure 2 It is a schematic vertical sectional structural diagram of the outer box of a zero point box structure for measuring atmospheric pressure.

[0018] Common pipe 1 Outer box 2 Inner box 3 Circular through-hole 4 First box door 5 Second box door 6 Hinge 7 Latch 8 Locking ear 9

[0019] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific Embodiments

[0020] The following embodiments are described to assist in the understanding of the present application, and the embodiments are not and should not be construed in any way as limiting the scope of protection of the present application.

[0021] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as separate functional units (which may include sub-units), but those skilled in the art will recognize that various components or portions thereof may be divided into separate components or integrated together (including being integrated within a single system or component).

[0022] At the same time, the connections between components or systems are not intended to be limited to direct connections. On the contrary, the data between these components may be modified, reformatted, or otherwise changed by intermediate components. Additionally, additional or fewer connections may be used. It should also be noted that the terms "coupled", "connected", or "input" should be understood to include direct connections, indirect connections through one or more intermediate devices, and wireless connections.

[0023] As Figure 1 , Figure 2 shown, a zero box structure for measuring atmospheric pressure includes: a common pipe 1, a measurement chamber, an outer box 2, and an inner box 3. The outer box 2 is a hollow structure, and the inner box 3 is provided inside the outer box 2. The inner box 3 is a hollow structure. The upper end of the common pipe 1 is in pipeline communication with the measurement chamber, and the lower end of the common pipe 1 passes through the outer wall of the outer box 2 and communicates with the inner box 3. N circular through-holes 4 are provided on the outer walls of both the outer box 2 and the inner box 3. The external atmospheric pressure enters the outer box 2 through the circular through-holes 4 and then enters the inner box 3 from the outer box 2. When it is necessary to measure the atmospheric pressure of the zero box, one end of the pressure sensor in the measurement chamber enters the inner box 3 through the common pipe 1 to measure the atmospheric pressure value in the inner box 3, which is used as the zero atmospheric pressure value.

[0024] The central lines of the outer box 2, the common pipe 1, and the inner box 3 are all on the same straight line.

[0025] The common pipe 1 is welded to the outer walls of both the outer box 2 and the inner box 3, and the outer walls of both the outer box 2 and the inner box 3 are integrally formed.

[0026] 2 - 4 rows of air inlet holes are provided on the lower bottom plate of the outer box 2, and N circular through-holes 4 are provided on each row of air inlet holes. 2 - 4 rows of air inlet holes are provided on both the front and rear wall plates of the inner box 3, and N circular through-holes 4 are provided on each row of air inlet holes.

[0027] A first box door 5 is provided on one side wall panel of the outer box 2, and the first box door 5 is detachably connected to the outer box 2. A second box door 6 is provided on one side wall panel of the inner box 3 and on the same side as the first box door 5 of the outer box 2, and the second box door 6 is detachably connected to the inner box 3.

[0028] Hinges 7 are provided on the left sides of both the first box door 5 and the second box door 6. The first box door 5 is connected to the outer box 2 through the hinge 7 to limit the opening angle of the first box door 5. The second box door 6 is connected to the inner box 3 through the hinge 7 to limit the opening angle of the second box door 6.

[0029] Bolts 8 are provided on the right sides of both the first box door 5 and the second box door 6 for fixing the unlocking positions of the box doors.

[0030] Two to four locking ears 9 are provided on the left and right sides of the rear wall panel of the outer box 2 for the fixed locking of the zero point box.

[0031] The wall panel thicknesses of the outer box 2 and the inner box 3 are between 1.2 mm and 1.4 mm.

[0032] The materials of both the outer box 2 and the inner box 3 are stainless steel.

[0033] The beneficial effects of the present utility model: The present utility model provides a zero point box structure for measuring atmospheric pressure, which includes: a common pipe 1, a measurement chamber, an outer box 2 and an inner box 3. The outer box 2 is a hollow structure, and an inner box 3 is provided inside the outer box 2. The inner box 3 is a hollow structure. The upper end of the common pipe 1 is communicated with the pipeline of the measurement chamber, and the lower end of the common pipe 1 passes through the outer wall of the outer box 2 and is communicated with the inner box 3. N circular through holes 4 are provided on the outer walls of both the outer box 2 and the inner box 3. The external atmospheric pressure enters the outer box 2 through the circular through holes 4 and then enters the inner box 3 from the outer box 2. When it is necessary to measure the atmospheric pressure of the zero point box, one end of the pressure sensor in the measurement chamber enters the inner box 3 through the common pipe 1 to measure the atmospheric pressure value in the inner box 3, which is used as the zero point atmospheric pressure value. The present utility model sets the pressure reference point inside the zero point box, which can avoid being interfered by external environmental conditions and make the zero point pressure of the pressure reference point stable.

[0034] The above embodiments only represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A zero box structure for measuring atmospheric pressure, comprising: A common pipe (1), a measuring chamber, an outer box (2) and an inner box (3), characterized in that: the outer box (2) is of a hollow structure, the inner box (3) is arranged inside the outer box (2), the inner box (3) is of a hollow structure, the upper end of the common pipe (1) is communicated with the pipeline of the measuring chamber, the lower end of the common pipe (1) passes through the outer wall of the outer box (2) and is communicated with the inner box (3), N circular through holes (4) are arranged on the outer walls of the outer box (2) and the inner box (3), the external atmospheric pressure enters the outer box (2) through the circular through holes (4), and then enters the inner box (3) from the outer box (2). When it is necessary to measure the atmospheric pressure of the zero box, one end of the pressure sensor in the measuring chamber enters the inner box (3) through the common pipe (1) to measure the atmospheric pressure value in the inner box (3) and use it as the zero atmospheric pressure value.

2. The zero box structure for measuring atmospheric pressure according to claim 1, characterized in that: The center lines of the outer box (2), the common pipe (1) and the inner box (3) are all on the same straight line.

3. The zero box structure for measuring atmospheric pressure according to claim 1, characterized in that: The common pipe (1) is welded to the outer walls of the outer box (2) and the inner box (3), and the outer walls of the outer box (2) and the inner box (3) are integrally formed.

4. The zero box structure for measuring atmospheric pressure according to claim 1, wherein: 2-4 rows of air inlet holes are arranged on the lower bottom plate of the outer box (2), and N circular through holes (4) are arranged on each row of air inlet holes. 2-4 rows of air inlet holes are arranged on the front and rear wall plates of the inner box (3), and N circular through holes (4) are arranged on each row of air inlet holes.

5. The zero box structure for measuring atmospheric pressure according to claim 1, characterized in that: A first box door (5) is opened on one side wall plate of the outer box (2), the first box door (5) is detachably connected to the outer box (2), a second box door (6) is opened on one side wall plate of the inner box (3) and on the same side as the first box door (5) of the outer box (2), and the second box door (6) is detachably connected to the inner box (3).

6. The zero box structure for measuring atmospheric pressure according to claim 5, characterized in that: Hinges (7) are arranged on the left sides of the first box door (5) and the second box door (6). The first box door (5) is connected to the outer box (2) through the hinge (7) to limit the opening angle of the first box door (5). The second box door (6) is connected to the inner box (3) through the hinge (7) to limit the opening angle of the second box door (6).

7. The zero box structure for measuring atmospheric pressure according to claim 5, characterized in that: Bolts (8) are arranged on the right sides of the first box door (5) and the second box door (6) for fixing the unlocking positions of the box doors.

8. The zero box structure for measuring atmospheric pressure according to claim 1, wherein: 2-4 locking lugs (9) are arranged on the left and right sides of the rear wall plate of the outer box (2) for fixing and locking the zero box.

9. The zero box structure for measuring atmospheric pressure according to claim 1, characterized in that: The wall thicknesses of the outer box (2) and the inner box (3) are between 1.2 mm and 1.4 mm.

10. The zero box structure for measuring atmospheric pressure according to claim 1, characterized in that: The materials of the outer box (2) and the inner box (3) are both stainless steel.

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