Device for measuring and calculating volume of liquid in liquid tank

Abstract

The utility model relates to the technical field of volume measurement and calculation, and discloses a device for measuring and calculating the volume of liquid in a liquid tank, which comprises a pressure sensor arranged outside the liquid tank, and a detection part of the pressure sensor is arranged in a detection hole at the bottom of the liquid tank through a sealing element; and the control device is used for receiving the liquid pressure signal measured by the pressure sensor and outputting the corresponding liquid volume. The pressure sensor is arranged on the outer side of the bottom of the liquid tank, so that the accuracy of liquid pressure measurement is guaranteed, workers are prevented from entering the liquid tank to overhaul and replace the pressure sensor, and the overhaul and replacement process of the pressure sensor is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of volume measurement technology, and more specifically, to a device for measuring the volume of liquid in a liquid tank. Background Technology

[0002] Cementing is an important operation in the drilling process. Drilling operations generally involve at least two cementing operations. During cementing, chemicals are used to clean the mud on the casing wall or to separate the mud from the drilling fluid. This usually requires the use of fluid tanks, cementing fluid supply trucks, etc.

[0003] To facilitate accurate acquisition of data such as the volume and flow rate of the liquid inside the tank, existing technologies include a pressure sensor installed on the inner wall of the bottom of the tank to measure the liquid pressure inside. This allows for the calculation of the liquid height based on the liquid pressure, and then the calculation of the liquid volume by integrating the cross-sectional area of ​​the tank.

[0004] However, since the pressure sensor is located at the bottom of the liquid tank, and the liquid tank is generally large with the opening at the top, if the pressure sensor malfunctions or becomes abnormal, staff need to enter the liquid tank from the top to repair the pressure sensor, which is a very complicated and time-consuming process.

[0005] In conclusion, simplifying the maintenance process of pressure sensors is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a liquid volume measurement device in a liquid tank, which places the pressure sensor on the outside of the bottom of the liquid tank, avoiding the need for personnel to enter the liquid tank to inspect and replace the pressure sensor, and facilitating the inspection and replacement process of the pressure sensor.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A device for measuring the volume of liquid in a liquid tank, comprising:

[0009] A pressure sensor located outside the liquid tank has its detection part installed in a detection hole at the bottom of the liquid tank through a sealing element;

[0010] The control device is used to receive the liquid pressure signal measured by the pressure sensor and output the corresponding liquid volume.

[0011] Preferably, the liquid tank includes a storage compartment and a bottom measuring compartment, a base plate is provided between the storage compartment and the measuring compartment, the detection hole is located at the lowest point of the base plate, and the pressure sensor is installed in the measuring compartment.

[0012] Preferably, the measuring chamber is provided with a horizontally mounted plate, and the pressure sensor is mounted on the horizontally mounted plate.

[0013] Preferably, the measurement chamber is provided with an inspection window, and a movable inspection door is provided outside the inspection window. A locking assembly for fixing the inspection door is provided between the inspection door and the outer wall of the measurement chamber. When the locking assembly is locked, the inspection door can close the inspection window.

[0014] Preferably, the inspection door is hinged to the outside of the inspection window, and at least one of the inner surface of the inspection door and the outer surface of the measurement chamber is provided with a sealing strip.

[0015] Preferably, the locking assembly includes a rotating rod rotatably disposed on the inspection door, a locking block at one end of the rotating rod located inside the inspection door, and an arc-shaped elastic block on the side of the locking block relatively close to the inspection door, the arc-shaped elastic block being used to abut against the inner wall surface of the measurement chamber.

[0016] Preferably, the rotating rod has a rotating knob at one end located outside the inspection door, and the diameter of the rotating knob is larger than the diameter of the rotating rod.

[0017] Preferably, the sealing element includes a sealing gasket disposed between the inner peripheral surface of the detection hole and the outer peripheral surface of the detection part of the pressure sensor.

[0018] Preferably, the control device is located on the base of the liquid tank, and the control device and the pressure sensor are electrically and signal connected through a data transmission medium.

[0019] Preferably, the control device is further included as a display device, and the display device is signal-connected to the control device, which is used to display the real-time liquid volume in the liquid tank.

[0020] The liquid volume measurement device provided by this utility model places the pressure sensor on the outside of the bottom of the liquid tank, which not only ensures the accuracy of liquid pressure measurement, but also avoids the need for personnel to enter the liquid tank to inspect and replace the pressure sensor, thus facilitating the inspection and replacement process of the pressure sensor. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the liquid volume measurement device in the liquid tank provided by this utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the liquid volume measuring device in the liquid tank.

[0024] Figure 3 This is a schematic diagram of the locking assembly.

[0025] Figure 1-Figure 3 middle:

[0026] 1-Pressure sensor; 2-Data transmission medium; 3-Sealing gasket; 4-Control device; 5-Display device; 100-Liquid tank; 110-Storage compartment; 120-Calculation compartment; 121-Inspection door; 122-Horizontal mounting plate; 123-Rotating rod; 1231-Clamping block; 1232-Arc-shaped elastic block; 1233-Rotating knob; 130-Liquid tank base. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The core of this utility model is to provide a liquid volume measurement device in a liquid tank. The pressure sensor is located on the outside of the bottom of the liquid tank, which avoids the need for personnel to enter the liquid tank to inspect and replace the pressure sensor, thus facilitating the inspection and replacement process of the pressure sensor.

[0029] The liquid volume measuring device in the liquid tank provided by this utility model includes:

[0030] The pressure sensor 1, located outside the liquid tank 100, has its detection part installed in the detection hole at the bottom of the liquid tank 100 through a sealing element;

[0031] The control device 4 is used to receive the liquid pressure signal measured by the pressure sensor 1 and output the corresponding liquid volume.

[0032] It should be noted that, in order to ensure the accuracy of the liquid volume calculation in the liquid tank 100, the accuracy of the liquid pressure measurement must also be ensured. Therefore, the detection hole needs to be located at the lowest point of the bottom of the liquid tank 100.

[0033] The type and measurement accuracy of pressure sensor 1 are determined according to the actual measurement needs. Diaphragm pressure sensor is usually selected as pressure sensor 1. Compared with contact pressure sensor, diaphragm pressure sensor has a longer service life and higher measurement accuracy.

[0034] The detection part of the pressure sensor 1 is installed in the detection hole at the bottom of the liquid tank 100 through a seal. The seal is used to seal the gap between the detection hole and the pressure sensor 1 to prevent the liquid in the tank from flowing out from the gap.

[0035] The sealing element can be a sealing gasket 3 made of rubber or the like. However, it should be noted that the material of the sealing gasket 3 must not react with the liquid inside the tank in order to ensure the quality of the liquid inside the tank and the service life of the sealing gasket 3.

[0036] For example, please refer to Figure 2 The sealing element includes a sealing gasket 3, which is disposed between the inner circumferential surface of the detection hole and the outer circumferential surface of the detection part of the pressure sensor 1. The width of the sealing gasket 3 is greater than the difference between the inner diameter of the detection hole and the outer diameter of the detection part.

[0037] Of course, in order to further improve the sealing performance of the pressure sensor 1 mounting location, a sealing gasket can also be set between the upper end face of the pressure sensor 1 and the bottom face of the detection hole of the liquid tank 100.

[0038] To prevent the pressure sensor 1 from gradually moving downwards under its own weight, causing the detection part of the pressure sensor 1 to fall out of the detection hole, the pressure sensor 1 is usually fixedly connected to the bottom of the liquid tank 100 by fasteners such as fastening bolts and connecting pins, or the pressure sensor 1 is fixed to the liquid tank base 130 by a sensor bracket.

[0039] Pressure sensor 1 is connected to control device 4 via signal and can output the measured liquid pressure signal to control device 4 through cable or wireless signal transmission such as WIFI. The liquid pressure signal can be an electrical signal or the corresponding pressure information after data processing by pressure sensor 1.

[0040] After receiving the pressure signal measured by the pressure sensor 1, the control device 4 can calculate the liquid height in the liquid tank 100 using the liquid pressure formula, and then calculate the liquid volume in the liquid tank 100 by integrating the cross-sectional area of ​​the liquid tank 100, and output the corresponding liquid volume.

[0041] Of course, based on the liquid volume change data in the liquid tank 100, the control device 4 can also calculate information such as the real-time flow rate in the liquid tank 100.

[0042] To protect the control device 4 and reduce the space occupied by the liquid volume measuring device, preferably, the control device 4 can be installed on the liquid tank base 130. The control device 4 and the pressure sensor 1 are electrically and signal connected through the data transmission medium 2, such as... Figure 1 and Figure 2 As shown.

[0043] In this embodiment, the pressure sensor 1 is located on the outside of the bottom of the liquid tank 100, which not only ensures the accuracy of liquid pressure measurement, but also avoids the need for personnel to enter the liquid tank 100 to inspect and replace the pressure sensor 1, thus facilitating the inspection and replacement process of the pressure sensor 1.

[0044] Based on the above embodiments, the liquid tank 100 includes a storage chamber 110 and a bottom measuring chamber 120. A bottom plate is provided between the storage chamber 110 and the measuring chamber 120. The detection hole is located at the lowest point of the bottom plate, and the pressure sensor 1 is installed in the measuring chamber 120.

[0045] Considering the capacity and transportation issues of the liquid tank 100, the storage compartment 110 of the liquid tank 100 is usually designed as a cylinder, with the top and bottom being conical or hemispherical, such as... Figure 1 As shown; of course, the liquid tank 100 can also be configured as a prism structure or other shapes.

[0046] To prevent pressure sensor 1 from directly contacting the external environment and to protect pressure sensor 1, pressure sensor 1 can be placed in the measuring chamber 120 at the bottom of liquid tank 100. However, it should be noted that the measuring chamber 120 at the bottom of liquid tank 100 is no longer used for storing liquid.

[0047] In this embodiment, the pressure sensor 1 is installed in the calculation chamber 120 at the bottom of the liquid tank 100. This not only protects the pressure sensor 1 from accidental damage due to external forces, but also simplifies the liquid volume calculation process of the control device 4, since the calculation chamber 120 at the bottom of the liquid tank 100 is usually not designed with a uniform diameter.

[0048] For preferred options, please refer to [the provided text]. Figure 2 The measuring chamber 120 is equipped with a horizontally mounted plate 122, and the pressure sensor 1 is mounted on the horizontally mounted plate 122. The pressure sensor 1 can be placed on the horizontally mounted plate 122 alone, or it can be connected and fixed to the horizontally mounted plate 122 by fasteners such as bolts and connecting pins.

[0049] Based on the above embodiment, the measurement chamber 120 is provided with an inspection window, and a movable inspection door 121 is provided outside the inspection window. A locking component for fixing the inspection door 121 is provided between the inspection door 121 and the outer wall of the measurement chamber 120. When the locking component is locked, the inspection door 121 can close the inspection window.

[0050] The inspection window of the measurement chamber 120 is used for the installation and maintenance of pressure sensor 1. The inspection window is usually set as a rectangular structure, which is regular in shape and easy to process. The size of the inspection window is determined according to the size of pressure sensor 1 and the required operating space in actual production.

[0051] The measurement chamber 120 is equipped with an inspection door 121 outside the inspection window. The inspection door 121 can be moved relative to the inspection window by rotation or sliding, thereby closing or opening the inspection window.

[0052] When the inspection door 121 rotates relative to the inspection window, the inspection door 121 is hinged to the outside of the inspection window via hinges, pivots, etc.

[0053] When the inspection door 121 slides relative to the inspection window, a linear guide rail is provided outside the measurement chamber 120, and the inspection door 121 is slidably installed on the aforementioned linear guide rail.

[0054] In order to fix the position of the inspection door 121 relative to the inspection window, a locking component for fixing the inspection door 121 is provided between the inspection door 121 and the outer wall of the measurement chamber 120. The locking component can be specifically configured as a snap-on structure, a door lock structure, etc.

[0055] In this embodiment, a movable maintenance door 121 is provided outside the maintenance window of the measurement chamber 120. During normal operation, the maintenance door 121 closes the maintenance window, while when maintenance is required, the maintenance door 121 is moved to open the maintenance window. Compared with the maintenance window always being open, this can reduce the entry of external dust, moisture, etc. into the measurement chamber 120, which is beneficial to extending the service life of the pressure sensor 1.

[0056] Considering that the surface of the measurement chamber 120 may be curved, making it difficult to install linear guide rails, preferably, an inspection door 121 can be hinged to the outside of the inspection window, and at least one of the inner surface of the inspection door 121 and the outer surface of the measurement chamber 120 is provided with a sealing strip.

[0057] The sealing strip is used to enhance the sealing performance between the inspection door 121 and the inspection window, preventing dust and moisture from entering the measurement chamber 120 through the gap between the inspection door 121 and the inspection window.

[0058] The sealing strip can be directly adhered to the inner surface of the inspection door 121 or the outer surface of the measurement chamber 120, or it can be clipped into the sealing groove of either of them.

[0059] Based on the above embodiments, the structure of the locking assembly is further defined. The locking assembly includes a rotating rod 123 rotatably disposed on the inspection door 121. One end of the rotating rod 123 located inside the inspection door 121 is provided with a locking block 1231. The side of the locking block 1231 that is relatively close to the inner wall surface of the calculation chamber 120 is provided with an arc-shaped elastic block 1232, which is used to abut against the inner wall surface of the calculation chamber 120.

[0060] Please refer to Figure 3 The rotating rod 123 is installed in the rotating rod mounting hole of the inspection door 121 via a rotating shaft, and the rotating rod 123 is set perpendicular to the thickness direction of the inspection door 121.

[0061] The rotating rod 123 has a locking block 1231 at one end inside the inspection door 121. The locking block 1231 has an arc-shaped elastic block 1232 on the side closer to the inspection door 121. The arc-shaped elastic block 1232 can abut against the inner wall of the measuring chamber 120.

[0062] When it is necessary to lock the maintenance door 121, control the rotating rod 123 to rotate, so that the locking block 1231 and the arc-shaped elastic block 1232 rotate synchronously until the arc-shaped elastic block 1232 is pressed against the inner wall of the calculation chamber 120. At this time, the friction between the arc-shaped elastic block 1232 and the inner wall of the calculation chamber 120 can prevent the maintenance door 121 from being accidentally opened due to collisions or tilting.

[0063] Conversely, when it is necessary to open the maintenance door 121, the control rotating rod 123 rotates in the opposite direction, causing the arc-shaped elastic block 1232 to disengage from the inner wall of the measuring chamber 120. At this time, the arc-shaped elastic block 1232 no longer obstructs the rotation of the maintenance door 121.

[0064] Preferably, in order to facilitate the turning of the rotating rod 123, a rotating knob 1233 can be provided at one end of the rotating rod 123 located outside the inspection door 121. The diameter of the rotating knob 1233 is larger than the diameter of the rotating rod 123, and the outer peripheral surface of the rotating knob 1233 is preferably provided with anti-slip texture and / or anti-slip layer.

[0065] In addition, to help staff determine when the rotating rod 123 has been rotated to the correct position, a marking groove or marking text can be provided on the end face of the rotating knob 1233.

[0066] Based on the above embodiments, in order to facilitate the staff to obtain liquid volume information in the liquid tank 100, a display device 5 such as a display screen can also be provided. The control device 4 is connected to the display device 5 by signal, and the display device 5 is used to display information such as the real-time liquid volume in the liquid tank 100.

[0067] Display device 5 is usually located in the control room or observation room. Specifically, it can be a central control console, a display screen, or a communication device such as a mobile phone. Considering the difficulty of cable wiring, it is preferable to connect to the control device 4 via wireless data transmission.

[0068] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0069] The liquid volume measurement device in a liquid tank provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A device for measuring the volume of liquid in a liquid tank, characterized in that, include: A pressure sensor (1) located outside the liquid tank (100) has its detection part installed in the detection hole at the bottom of the liquid tank (100) through a sealing element; The control device (4) is used to receive the liquid pressure signal measured by the pressure sensor (1) and output the corresponding liquid volume.

2. The liquid volume measuring device in a liquid tank according to claim 1, characterized in that, The liquid tank (100) includes a storage compartment (110) and a bottom measuring compartment (120). A bottom plate is provided between the storage compartment (110) and the measuring compartment (120). The detection hole is located at the lowest point of the bottom plate, and the pressure sensor (1) is installed in the measuring compartment (120).

3. The liquid volume measuring device in a liquid tank according to claim 2, characterized in that, The measuring chamber (120) is provided with a horizontally mounted plate (122), and the pressure sensor (1) is mounted on the horizontally mounted plate (122).

4. The liquid volume measuring device in a liquid tank according to claim 2, characterized in that, The measurement chamber (120) is provided with an inspection window, and a movable inspection door (121) is provided outside the inspection window. A locking assembly for fixing the inspection door (121) is provided between the inspection door (121) and the outer wall of the measurement chamber (120). When the locking assembly is locked, the inspection door (121) can close the inspection window.

5. The liquid volume measuring device in a liquid tank according to claim 4, characterized in that, The inspection door (121) is hinged to the outside of the inspection window, and at least one of the inner surface of the inspection door (121) and the outer surface of the measurement chamber (120) is provided with a sealing strip.

6. The liquid volume measuring device in a liquid tank according to claim 4, characterized in that, The locking assembly includes a rotating rod (123) rotatably disposed on the inspection door (121). One end of the rotating rod (123) located inside the inspection door (121) is provided with a locking block (1231). The locking block (1231) is provided with an arc-shaped elastic block (1232) on the side relatively close to the inspection door (121). The arc-shaped elastic block (1232) is used to abut against the inner wall surface of the measurement chamber (120).

7. The liquid volume measuring device in a liquid tank according to claim 6, characterized in that, The rotating rod (123) is provided with a rotating knob (1233) at one end outside the inspection door (121), and the diameter of the rotating knob (1233) is larger than the diameter of the rotating rod (123).

8. The liquid volume measuring device in a liquid tank according to any one of claims 1-7, characterized in that, The sealing element includes a sealing gasket (3), which is disposed between the inner circumferential surface of the detection hole and the outer circumferential surface of the detection part of the pressure sensor (1).

9. The liquid volume measuring device in a liquid tank according to any one of claims 1-7, characterized in that, The control device (4) is located on the liquid tank base (130), and the control device (4) and the pressure sensor (1) are electrically and signal connected through a data transmission medium (2).

10. The liquid volume measuring device in a liquid tank according to any one of claims 1-7, characterized in that, It also includes a display device (5), the control device (4) is signal connected to the display device (5), and the display device (5) is used to display the real-time liquid volume in the liquid tank (100).

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