Double-isolation static leveling instrument
By setting up a dual isolation differential pressure sensor in the inner chamber of the static level and isolating it with a cover, the problem of easy damage of the existing static level is solved and the liquid static detection process is simplified.
Patent Information
- Application Number
- CN202520109261.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2035-01-17
AI Technical Summary
The existing static level is prone to permanent damage due to moisture in the trachea or misconnection of the water pipe during measurement. In the case of a dual isolation design, the liquid needs to be separated from the semiconductor components during liquid static testing, resulting in complex detection.
A double isolation static level is designed. By setting up a double isolation differential pressure sensor in the inner chamber and covering the cavity with a cover, the second flow channel connects to the inner chamber, so that the double isolation differential pressure sensor can move linearly in the inner chamber and detect the pressure difference at both ends.
Effectively isolate gases and liquids, prevent moisture or liquids from directly contacting semiconductor components, avoid damage, and simplify the liquid static detection process.
Smart Images
Figure CN222560969U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of level measurement, and particularly relates to a double-isolated static level. Background Art
[0002] The measuring element of the existing static level generally uses a universal pressure sensor to measure force. A static level is provided with a fluid chamber, which is connected to a liquid pipe and an air pipe, wherein the air pipe passes gas and the liquid pipe passes liquid. Both the air pipe and the liquid pipe are in direct contact with the semiconductor components of the pressure sensor vertically. If the humidity of the gas in the air pipe is high, or the air pipe is mistakenly connected to the water pipe, the instrument will be permanently damaged. In this way, a fluid chamber fails to separate gas and liquid. In a fluid chamber, using a pressure sensor to measure the fluid force of the mixture of gas and liquid will damage the instrument of the pressure sensor.
[0003] In addition, the internal design of the double-isolated static level currently used adopts two fluid chambers, one fluid chamber is connected to the liquid pipe, and the other fluid chamber is connected to the air pipe. The gas in the fluid chamber connected to the air pipe flows directly out of the fluid chamber connected to the air pipe, and a double-isolated differential pressure sensor is installed in the fluid chamber connected to the liquid pipe. The liquid in the fluid chamber connected to the liquid pipe flows directly out of the fluid chamber connected to the liquid pipe. Since the liquid in the fluid chamber connected to the liquid pipe is tested for liquid statics through the double-isolated differential pressure sensor, it is necessary to separate the liquid from the semiconductor components inside the double-isolated differential pressure sensor in order to test the liquid statics in the fluid chamber connected to the liquid pipe. Utility Model Content
[0004] The utility model provides a double-isolated static level, which is used to solve the technical problem of how to test the hydrostatic force of the double-isolated static level. The utility model covers the cavity with a sealing cover, a double-isolated differential pressure sensor is sleeved in an inner cavity, a second flow channel is connected to the inner cavity, the double-isolated differential pressure sensor performs linear motion in the inner cavity, and the deformation conditions at both ends of the double-isolated differential pressure sensor are detected to detect the hydrostatic conditions at both ends of the double-isolated differential pressure sensor.
[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions:
[0006] A double-isolation static level, comprising:
[0007] A main body, wherein a first flow channel and a second flow channel are formed on the main body, and the first flow channel and the second flow channel are separated;
[0008] A cavity, the cavity is arranged on the main body, the cavity is connected to the first flow channel, an inner chamber is opened in the cavity, and the inner chamber is connected to the first flow channel;
[0009] A cover, which is used to cover the cavity;
[0010] A double-isolated differential pressure sensor is provided in the inner chamber and is used to detect the pressure difference at both ends thereof;
[0011] Optionally, the inner chamber is divided into a first inner chamber and a second inner chamber by a double-isolation differential pressure sensor; both ends of the double-isolation differential pressure sensor have isolation diaphragms, and the double-isolation differential pressure sensor detects the pressure difference at both ends through the isolation diaphragms at both ends;
[0012] The isolation diaphragm on one end of the double isolation differential pressure sensor is in the first inner chamber, and the isolation diaphragm on the other end of the double isolation differential pressure sensor is in the second inner chamber.
[0013] Optionally, after the first inner chamber is covered on the cavity by a cover, a first inner chamber is formed inside the cover and outside one end of the double-isolation differential pressure sensor; and the second inner chamber is connected to the first flow channel.
[0014] Optionally, the height of the cavity is smaller than the height of the main body.
[0015] Optionally, the length of the first flow channel is equal to the length of the second flow channel.
[0016] Optionally, the double-isolated differential pressure sensor is matched with the inner chamber by a clearance fit.
[0017] Optionally, sealing grooves are respectively provided on the outer peripheral walls on both sides of the double-isolation differential pressure sensor.
[0018] Optionally, a first sealing ring and a second sealing ring are respectively installed in the two sealing grooves, the first sealing ring is used to separate the first inner chamber from the second inner chamber, and the second sealing ring is used to separate the first inner chamber from the second inner chamber.
[0019] Optionally, a wire connection hole is opened in the middle position of the double-isolated differential pressure sensor, a wire is connected to the wire connection hole, a wire groove is opened on the cavity, the wire groove is covered by a cover, and the wire connected to the wire connection hole passes through the wire groove to connect the wire to the digital display.
[0020] Optionally, the first sealing ring is used to separate the second inner chamber from the wire connection hole, and the second sealing ring is used to separate the first inner chamber from the wire connection hole.
[0021] Beneficial effects of the utility model:
[0022] 1. The utility model is to open a first flow channel and a second flow channel on the main body, separate the first flow channel and the second flow channel through the main body, and each of the first flow channel and the second flow channel flows different fluids; the cover covers the cavity, the double-isolated differential pressure sensor is set in the inner cavity, the second flow channel is connected to the inner cavity, the double-isolated differential pressure sensor performs linear motion in the inner cavity, and the deformation of the two ends of the double-isolated differential pressure sensor is detected to detect the pressure difference at the two ends of the double-isolated differential pressure sensor.
[0023] 2. The first sealing ring of the utility model is used to separate the second inner chamber from the wire connection hole, and the second sealing ring is used to separate the first inner chamber from the wire connection hole. Liquid will not flow into the semiconductor device in the wire connection hole, so the semiconductor device in the wire connection hole will not be damaged, and the double isolation differential pressure sensor will not be damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after the outer shell is removed;
[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model after the digital display is removed;
[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model after the cover is removed;
[0029] Figure 5 It is a schematic diagram of the cross-sectional structure in the main viewing direction at the position of the first flow channel of the utility model;
[0030] Figure 6 It is a schematic diagram of the cross-sectional structure in the main viewing direction at the position of the second flow channel of the utility model;
[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the double-isolated differential pressure sensor of the utility model in the first direction;
[0032] Figure 8 It is a schematic diagram of the three-dimensional structure of the double-isolated differential pressure sensor of the utility model in the second direction.
[0033] Icons: 1-main body; 2-housing; 3-digital display; 4-cover; 5-first flow channel; 6-second flow channel; 7-cavity; 71-wire groove; 72-inner chamber; 721-first inner chamber; 722-second inner chamber; 8-first sealing ring; 9-double isolation differential pressure sensor; 91-sealing groove; 92-wire connection hole; 10-second sealing ring; 11-isolation diaphragm; DETAILED DESCRIPTION
[0034] The embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0035] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0038] Embodiment 1;
[0039] like Figure 1-Figure 6 As shown, this embodiment provides a double-isolated static level, including: a main body 1, a cover 4, a cavity 7 and a double-isolated differential pressure sensor 9.
[0040] like Figure 3-Figure 4 As shown, the main body 1 is provided with a first flow channel 5 (for liquid) and a second flow channel 6 (for gas), and the first flow channel 5 and the second flow channel 6 are separated. Figure 4-Figure 5As shown, the cavity 7 is arranged on the main body 1, the cavity 7 is connected to the first flow channel 5, an inner chamber 72 is opened in the cavity 7, the inner chamber 72 is connected to the first flow channel 5, the cover 4 is used to cover the cavity 7, the double isolation differential pressure sensor 9 is sleeved in the inner chamber 72, and the double isolation differential pressure sensor 9 is used to detect the pressure difference at both ends thereof;
[0041] The double-isolated differential pressure sensor 9 can detect that the pressure at one end of the double-isolated differential pressure sensor 9 is greater than the pressure at the other end of the double-isolated differential pressure sensor 9, the pressure at the other end of the double-isolated differential pressure sensor 9 is greater than the pressure at one end of the double-isolated differential pressure sensor 9, or the pressures at both ends of the double-isolated differential pressure sensor 9 are equal.
[0042] from Figure 5 It can be seen that the double-isolated differential pressure sensor 9 is sleeved in the inner chamber 72 because a shoulder 73 is provided at the intersection of the inner chamber 72 and the first flow channel 5 and in the inner chamber 72. The shoulder 73 is to prevent the double-isolated differential pressure sensor 9 from moving downward into the first flow channel 5. Since the cover 4 is used to cover the cavity 7, the cover 4 is to prevent the double-isolated differential pressure sensor 9 from continuing to move upward. Therefore, from Figure 5 It can be seen that the double-isolated differential pressure sensor 9 can move linearly along the axis of the double-isolated differential pressure sensor 9 in the inner chamber 72 .
[0043] like Figure 5 As shown, the inner chamber 72 is divided into a first inner chamber 721 and a second inner chamber 722 by a double-isolated differential pressure sensor 9; both ends of the double-isolated differential pressure sensor 9 have isolation diaphragms 11, and the double-isolated differential pressure sensor 9 detects the pressure at both ends through the isolation diaphragms 11 at both ends;
[0044] The isolation diaphragm 11 on one end, i.e., the upper end, of the double-isolation differential pressure sensor 9 is in the first inner chamber 721 , and the isolation diaphragm 11 on the other end, i.e., the lower end, of the double-isolation differential pressure sensor 9 is in the second inner chamber 722 .
[0045] After the first inner chamber 721 is covered on the cavity 7 by the cover 4 , the first inner chamber 721 is formed inside the cover 4 and outside the upper end of the double isolation differential pressure sensor 9 , and the second inner chamber 722 is connected to the first flow channel 5 .
[0046] The height of the cavity 7 is smaller than that of the main body 1 , so that the cover 4 connected to the cavity 7 can be covered by the housing 2 .
[0047] The length of the first flow channel 5 is equal to the length of the second flow channel 6 , so that the flow rate of the fluid in the first flow channel 5 is equal to the flow rate of the fluid in the second flow channel 6 .
[0048] The double-isolated differential pressure sensor 9 is matched with the inner chamber 72 in a clearance fit manner, so that the double-isolated differential pressure sensor 9 can move linearly in the inner chamber 72 .
[0049] In addition, if Figure 6 As shown, the fluid in the second flow channel 6 flows directly from the left end of the second flow channel 6 to the right end of the second flow channel 6 , or flows from the right end of the second flow channel 6 to the left end of the second flow channel 6 .
[0050] Embodiment 2;
[0051] Based on Example 1, Figure 7-Figure 8 As shown, sealing grooves 91 are respectively opened on the outer peripheral walls on both sides of the double isolation differential pressure sensor 9.
[0052] like Figure 7 or Figure 8 Combined with Figure 5 It can be seen that the first sealing ring 8 and the second sealing ring 10 are respectively installed in the two sealing grooves 91 . The first sealing ring 8 is used to separate the first inner chamber 721 and the second inner chamber 722 , and the second sealing ring 10 is used to separate the first inner chamber 721 and the second inner chamber 722 .
[0053] A wire connection hole 92 is provided in the middle of the double-isolated differential pressure sensor 9. The wire connection hole 92 is for facilitating the installation of semiconductor devices (mainly installing semiconductor devices in the wire connection hole 92. The semiconductor devices are connected to the two isolation diaphragms 11 through wires. When the two isolation diaphragms 11 are deformed, the semiconductor devices can electrically sense the deformation of the two isolation diaphragms 11). A wire groove 71 is provided on the cavity 7. The wire groove 71 is covered by the cover 4. The main purpose is to allow the wires on the semiconductor device in the wire connection hole 92 to pass through the wire groove 71 so that the wires are connected to the digital display 3. The digital display 3 can display the pressure conditions at the upper and lower ends of the double-isolated differential pressure sensor 9.
[0054] The first sealing ring 8 is used to separate the second inner chamber 722 and the wire connection hole 92, and the second sealing ring 10 is used to separate the first inner chamber 721 and the wire connection hole 92. In this way, the semiconductor device in the wire connection hole 92 will not be flowed into by liquid, and the semiconductor device in the wire connection hole 92 will not be damaged, and finally, the dual isolation differential pressure sensor 9 will not be damaged.
[0055] Embodiment 3;
[0056] Based on Example 1-Example 2, as Figure 5 As shown, the double-isolation differential pressure sensor 9 is capable of linear motion in the inner chamber 72 , and both ends of the double-isolation differential pressure sensor 9 are provided with isolation diaphragms 11 .
[0057] If the fluid pressure in the first inner chamber 721 is greater than the fluid pressure in the second inner chamber 722, the isolation diaphragm 11 at the upper end of the double-isolation differential pressure sensor 9 is deformed, and at the same time, the double-isolation differential pressure sensor 9 moves downward; if the fluid pressure in the second inner chamber 722 is greater than the fluid pressure in the first inner chamber 721, the isolation diaphragm 11 at the lower end of the double-isolation differential pressure sensor 9 is deformed, and at the same time, the double-isolation differential pressure sensor 9 moves upward; if the fluid pressure in the first inner chamber 721 is equal to the fluid pressure in the second inner chamber 722, the isolation diaphragms 11 at the upper and lower ends of the double-isolation differential pressure sensor 9 do not deform, and the double-isolation differential pressure sensor 9 does not make a linear motion.
[0058] In addition, the wires between the semiconductor device and the digital display 3 must be sufficiently long so that the wires between the semiconductor device and the digital display 3 are not broken during the linear motion of the double-isolated differential pressure sensor 9 .
[0059] Embodiment 4;
[0060] Based on all the above embodiments, the utility model mainly opens a first flow channel 5 and a second flow channel 6 on the main body 1 , and separates the first flow channel 5 and the second flow channel 6 through the main body 1 .
[0061] In addition, the utility model provides a cavity 7 on the main body 1, and the cavity 7 is connected to the first flow channel 5, that is, an inner chamber 72 is opened in the cavity 7, and the inner chamber 72 is connected to the first flow channel 5. The double isolation differential pressure sensor 9 is arranged in the inner chamber 72, and the double isolation differential pressure sensor 9 is used to detect the pressure at both ends thereof, that is, the pressure in the first inner chamber 721 and the pressure in the second inner chamber 722.
[0062] It is also necessary to explain that the dual-isolation differential pressure sensor 9 and the semiconductor devices thereon are conventional electronic devices, and the specific circuit is not described in detail here. The utility model is mainly used to protect the mechanical structure. For the dual-isolation differential pressure sensor 9, the well-known dual-isolation differential pressure sensor 9 is used, and the specific circuit structure of the dual-isolation differential pressure sensor 9 is not described in detail here.
[0063] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A double-isolated static level, characterized in that: include: A main body (1), wherein a first flow channel (5) and a second flow channel (6) are formed on the main body (1), and the first flow channel (5) and the second flow channel (6) are separated; a cavity (7), the cavity (7) being arranged on the main body (1), the cavity (7) being connected to the first flow channel (5), an inner chamber (72) being opened in the cavity (7), and the inner chamber (72) being connected to the first flow channel (5); A sealing cover (4), the sealing cover (4) being used to cover the cavity (7); A double-isolated differential pressure sensor (9), wherein the double-isolated differential pressure sensor (9) is sleeved in the inner chamber (72), and the double-isolated differential pressure sensor (9) is used to detect the pressure difference at its two ends.
2. A double-isolated static level according to claim 1, characterized in that: The inner chamber (72) is divided into a first inner chamber (721) and a second inner chamber (722) by the double-isolation differential pressure sensor (9); both ends of the double-isolation differential pressure sensor (9) are provided with isolation diaphragms (11), and the double-isolation differential pressure sensor (9) detects the pressure difference between the two ends through the isolation diaphragms (11) at the two ends; The isolation diaphragm (11) on one end of the double-isolation differential pressure sensor (9) is in the first inner chamber (721), and the isolation diaphragm (11) on the other end of the double-isolation differential pressure sensor (9) is in the second inner chamber (722).
3. A double-isolated static level according to claim 2, characterized in that: After the first inner chamber (721) is covered on the cavity (7) by the cover (4), a first inner chamber (721) is formed inside the cover (4) and outside one end of the double-isolated differential pressure sensor (9); the second inner chamber (722) is connected to the first flow channel (5).
4. A double-isolated static level according to claim 1, characterized in that: The height of the cavity (7) is smaller than the height of the main body (1).
5. A double-isolated static level according to claim 1, characterized in that: The length of the first flow channel (5) is equal to the length of the second flow channel (6).
6. A double-isolated static level according to claim 1, characterized in that: The double-isolated differential pressure sensor (9) is matched with the inner chamber (72) in a clearance fit manner.
7. A double-isolated static level according to claim 1, characterized in that: Sealing grooves (91) are respectively formed on the outer peripheral walls on both sides of the double-isolated differential pressure sensor (9).
8. A double-isolated static level according to claim 7, characterized in that: A first sealing ring (8) and a second sealing ring (10) are respectively installed in the two sealing grooves (91); the first sealing ring (8) is used to separate the first inner chamber (721) and the second inner chamber (722); and the second sealing ring (10) is used to separate the first inner chamber (721) and the second inner chamber (722).
9. A double-isolated static level according to claim 8, characterized in that: A wire connection hole (92) is provided in the middle of the double-isolated differential pressure sensor (9), and an electric wire is connected to the wire connection hole (92). A wire groove (71) is provided on the cavity (7), and the wire groove (71) is covered by the cover (4). The wire connected to the wire connection hole (92) passes through the wire groove (71), so that the wire is connected to the digital display (3).
10. A double-isolated static level according to claim 9, characterized in that: The first sealing ring (8) is used to separate the second inner chamber (722) and the wire connection hole (92), and the second sealing ring (10) is used to separate the first inner chamber (721) and the wire connection hole (92).