Floating type liquid level switch measuring device

Abstract

The invention provides a floating type liquid level switch measuring device, and belongs to the technical field of liquid level measurement. The floating type liquid level switch measuring device comprises a pipeline which is connected with a container for accommodating liquid to be measured; the floating ball assembly is arranged in the pipeline, the strain gauge is arranged in the pipeline, and the strain gauge is connected with the floating ball assembly; the alarm switch piece is arranged in the pipeline, the alarm switch piece corresponds to the strain gauge, when the liquid to be measured in the container is measured, the floating ball assembly moves up and down along with the change of the liquid level of the liquid to be measured, the strain gauge deforms along with the floating ball assembly, and then the alarm switch piece is triggered to act. The suspension type liquid level switch is adopted, the liquid level can be accurately measured outside the liquid level, stable performance can be kept in various severe chemical environments, corrosion of corrosive substances is effectively resisted, the electrode plate does not need to be arranged in the liquid level, and corrosion to the electrode plate is effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid level measurement, and in particular relates to a floating liquid level switch measuring device. Background Art

[0002] At present, electrode level switches are mostly used for liquid level measurement. Electrode level switches are usually composed of multiple electrodes, which are installed at different heights of the liquid container to be measured. Therefore, when the electrodes are directly inserted into the pipeline for measurement, many problems will be encountered.

[0003] For example, on the one hand, the electrode will be disturbed by steam, and the presence of steam may cause changes in the electromagnetic field around the electrode, thereby affecting the accurate measurement of the relevant physical quantities by the electrode. On the other hand, for high temperature and corrosive media, the corrosive gas present in the pipeline will also have an adverse effect on the electrode. The corrosive gas may react chemically with the metal parts of the electric contact level gauge, gradually corroding the electrode material, causing the physical and chemical properties of the electrode to change, and ultimately leading to poor contact, inaccurate signals, deviations in the electrode measurement results, and failures to accurately reflect the actual situation in the pipeline, and even failures. On the other hand, the stability and reliability of the electric contact pressure switch in high temperature environments are also difficult to meet actual needs. This problem of inaccurate electrode measurement has caused great trouble in many industrial application scenarios, seriously affecting the stability and safety of the production process. Summary of the invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art and provide a floating liquid level switch measuring device.

[0005] The present disclosure provides a floating liquid level switch measuring device, comprising:

[0006] A pipeline connected to a container containing a liquid to be tested;

[0007] A float assembly is arranged in the pipeline.

[0008] A strain gauge is disposed in the pipeline and connected to the float assembly;

[0009] The alarm switch component is arranged in the pipeline, and the alarm switch component corresponds to the strain gauge. When measuring the liquid to be measured in the container, the float assembly moves up and down with the change of the liquid level of the liquid to be measured, and the strain gauge is deformed accordingly, thereby triggering the alarm switch component to operate.

[0010] Optionally, the float assembly includes a first float and a second float connected along the length direction of the pipeline; wherein,

[0011] The first float is located on a side facing the container, and when measuring the liquid to be measured in the container, the first float is in contact with the liquid to be measured;

[0012] The second float is connected to the strain gauge.

[0013] Optionally, the first float is located at the end of the pipeline or inside the pipeline, and the position of the first float corresponds to a preset liquid level.

[0014] Optionally, a first connecting rod is provided between the first floating ball and the second floating ball.

[0015] Optionally, the first float, the first connecting rod and the pipeline are made of corrosion-resistant materials.

[0016] Optionally, a second connecting rod is arranged between the second float and the strain gauge.

[0017] Optionally, the second float, the second connecting rod and the strain gauge are integrally formed.

[0018] Optionally, the pipeline includes a first accommodating portion and a second accommodating portion; wherein the cross-sectional area of ​​the first accommodating portion is smaller than the cross-sectional area of ​​the second accommodating portion;

[0019] The first accommodation portion is used to accommodate the float assembly;

[0020] The second accommodating portion is used to accommodate the strain gauge and the alarm switch component.

[0021] Optionally, the size of the float assembly is smaller than the size of the first accommodation portion.

[0022] Optionally, the device further comprises a connecting piece, one end of which is connected to a container containing the liquid to be tested, and the other end of which is connected to a pipeline.

[0023] Optionally, the device further comprises a support member, one end of which is connected to the outer wall of the pipe, and the other end of which is disposed on the ground.

[0024] The present disclosure provides a floating liquid level switch measuring device, comprising: a pipeline, the end of which is connected to a container containing a liquid to be measured; a float assembly, which is arranged in the pipeline, a strain gauge, which is arranged in the pipeline and connected to the float assembly; an alarm switch component, which is arranged in the pipeline and corresponds to the strain gauge. When measuring the liquid to be measured in the container, the float assembly moves up and down with the change of the liquid level of the liquid to be measured, and the strain gauge is deformed accordingly, thereby triggering the alarm switch component to operate. The present disclosure adopts a suspended liquid level switch, which can realize accurate measurement of the liquid level outside the liquid surface, maintain stable performance in various harsh chemical environments, effectively resist the erosion of corrosive substances, and does not need to set the electrode sheet in the liquid surface, which effectively avoids corrosion of the electrode sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a floating liquid level switch measuring device according to Embodiment 1 of the present disclosure;

[0026] Figure 2 This is a schematic diagram of the structure of a floating liquid level switch measuring device according to Embodiment 2 of the present disclosure. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0028] In some descriptions of the present disclosure, the terms "include" or "comprises" and the like neither limit the mentioned shapes, numbers, steps, actions, operations, components, originals and / or their groups, nor exclude the presence or addition of one or more other different shapes, numbers, steps, actions, operations, components, originals and / or their groups.

[0029] In some descriptions of the present disclosure, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number and order of the indicated technical features.

[0030] In some descriptions of the present disclosure, terms such as "installed", "connected", "connected" or "fixed" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect through an intermediate medium, and may be internal connections between two elements or mutual interactions between two elements.

[0031] In some descriptions of the present disclosure, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or position relationships based on the orientations or position relationships shown in the accompanying drawings and are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0032] like Figure 1 and Figure 2 As shown, the present disclosure proposes a floating liquid level switch measuring device 100, including: a pipeline 110, a float assembly 120, a strain gauge 130, and an alarm switch component 150; wherein the pipeline 110 is connected to a container 200 containing a liquid to be measured; the float assembly 120 is arranged in the pipeline 110, the strain gauge 130 is arranged in the pipeline 110, and the strain gauge 130 is connected to the float assembly; the alarm switch component 150 is arranged in the pipeline 110, and the alarm switch component 150 corresponds to the strain gauge 130. When measuring the liquid to be measured in the container, the liquid to be measured enters the pipeline 110, and the float assembly 120 moves up and down as the liquid level of the liquid to be measured changes, and the strain gauge 130 is deformed accordingly, thereby triggering the alarm switch component 150 to operate.

[0033] In this embodiment, a new floating liquid level switch is designed, the switch is set outside the liquid surface, and the switch is controlled by connecting parts and suspension components. It can maintain stable performance in various harsh chemical environments and effectively resist the erosion of corrosive substances.

[0034] It should be understood that when the strain gauge is deformed and the resistance change of the strain gauge reaches a certain threshold, the switch is closed through the control circuit and a liquid level alarm signal is generated. When the strain gauge is not deformed, the resistance does not change and the control circuit is disconnected.

[0035] It should be noted that the pipe and the container of this embodiment can be directly connected, for example, the joint of the container is provided with an internal thread, the outer wall of the pipe is provided with an external thread, or connected by threads. Of course, other connectors can also be used to ensure the stability and sealing of the connection.

[0036] In some preferred embodiments, Figure 1 As shown, the joint of the container 200 is provided with an internal thread, and the outer wall of the pipe 110 is provided with an external thread, and the two are connected by threads.

[0037] In other preferred embodiments, Figure 2As shown, a connector 160 is provided between the joint of the container 200 and the pipeline 110, that is, one end of the connector 160 is connected to the container 200 containing the liquid to be tested, and the other end of the connector 160 is connected to the pipeline 110, and the connection between the two is achieved through the connector, which is convenient for installation and disassembly.

[0038] It should also be understood that the end of the pipe can be located at the end of the container or inside the container. For example, the position of the end of the pipe corresponds to a preset liquid level in the container. The preset liquid level is a critical liquid level, and the corresponding switch is in a closed state. When the liquid level is lower than the critical liquid level, the switch is in a closed state. When the liquid level is higher than the high liquid level, the switch is in an open state.

[0039] It should be further noted that the present embodiment does not specifically limit the structure of the pipeline. Figure 1 and Figure 2 As shown, the pipeline 110 includes a first accommodating portion 111 and a second accommodating portion 112 , wherein the first accommodating portion 111 is used to accommodate the float assembly 120 , and the second accommodating portion is used to accommodate the strain gauge 130 and the alarm switch member 150 .

[0040] It should be understood that the sizes of the first accommodating portion and the second accommodating portion may be equal or different. For example, the cross-sectional area of ​​the first accommodating portion is smaller than the cross-sectional area of ​​the second accommodating portion. In this way, a larger strain gauge may be provided to improve the measurement sensitivity.

[0041] It should be noted that the present embodiment does not specifically limit the structure and number of the floating ball assembly, and may be one floating ball, two floating balls, or more floating balls, etc. Of course, multiple floating balls may be arranged in parallel in the horizontal direction in the pipeline, or may be arranged in parallel in the height direction in the pipeline.

[0042] Specifically, Figure 1 and Figure 2 As shown, the float assembly 120 includes a first float 121 and a second float 122 connected along the length direction of the pipeline 110; wherein the first float 121 is located on the side facing the container 200, and when measuring the liquid to be tested in the container 200, the first float 121 is in contact with the liquid to be tested; the second float 122 is connected to the strain gauge 130.

[0043] In some preferred embodiments, Figure 1As shown, the end of the pipeline 110 is located at a preset liquid level, and the first float 121 is located at the end of the pipeline 110. The position of the first float 121 corresponds to the preset liquid level, that is, at this position, the alarm switch component 150 remains in a closed state, and when the liquid level further decreases, the first float 121 drops accordingly, while the alarm switch component 150 continues to remain closed. When the liquid level further increases, the first float 121 rises, thereby pushing the second float 122 to rise, the strain gauge 130 is deformed, and the alarm switch component 150 opens.

[0044] In other preferred embodiments, Figure 2 As shown, the pipeline 110 is inserted below the liquid surface corresponding to the preset liquid level, and the first float 121 is located inside the pipeline 110, corresponding to the preset liquid level.

[0045] It should be understood that when the first float and the second float are connected, a connecting member, such as a connecting rod or the like, should be provided between the two. Similarly, a connecting member may also be provided between the second float and the strain gauge.

[0046] Specifically, Figure 1 and Figure 2 As shown, a first connecting rod 141 is disposed between the first floating ball 121 and the second floating ball 122 , and a second connecting rod 142 is disposed between the second floating ball 122 and the strain gauge 130 .

[0047] It should be understood that the first connecting rod and the second connecting rod should be made of a rigid material that is not easily deformed to improve the accuracy of the measurement, such as stainless steel, nickel-based alloy, titanium alloy, etc.

[0048] It should also be understood that since the first float and the pipeline will be in contact with the corrosive liquid, in order to avoid the corrosive liquid from corroding the first float, the first float and the pipeline should be made of corrosion-resistant materials, such as stainless steel, nickel-based alloy, etc. Of course, the first connecting rod, the second connecting rod and the second float can also be made of corrosion-resistant materials to avoid corrosion by corrosive gases, and can maintain stable performance in various harsh chemical environments and effectively resist erosion by corrosive substances.

[0049] In some preferred embodiments, the second float and the strain gauge are integrally formed, that is, the second float and the strain gauge and the second connecting rod therebetween are integrated to improve sensitivity.

[0050] Furthermore, if Figure 1 and Figure 2 As shown, the device 100 further includes a support member 170, one end of which is connected to the outer wall of the pipeline 110, and the other end of which is disposed on the ground. The support member is used to support the pipeline, thereby further improving stability.

[0051] It should be noted that the present embodiment does not specifically limit the structure of the support member. For example, it may include two connected support walls, one of which is connected to the outside of the pipeline, and one end of the other support wall is connected to one of the support walls, and the other end abuts the ground. For another example, multiple support walls may be provided, one end of each of which is connected to the outside of the pipeline, and the other end directly abuts the ground, that is, the multiple support walls are inclined from the pipeline to the ground; of course, other forms of support members may also be provided. For another example, an annular support structure and at least two support walls may be provided, the annular structure is sleeved on the outside of the pipeline, one end of at least two support walls is connected to the annular support structure, and the other end abuts the ground.

[0052] Combined Figure 1 and Figure 2 Based on the measurement device given above, the sampling principle of this embodiment is as follows: when the liquid level in the container 200 is high, the first float 121 rises, and then the second float 122 rises, and the strain gauge 130 moves upward to trigger the alarm switch 150 to open and send out an alarm signal; when the liquid level drops, the first float 121 drops, and then the second float 122 drops, and the strain gauge 130 returns to its original state. In addition, the device is equipped with a support 170, which is connected to the ground, effectively ensuring that the entire device can maintain a parallel installation state.

[0053] The floating liquid level switch measuring device will be further described below in conjunction with specific embodiments:

[0054] Example 1

[0055] like Figure 1 As shown, the floating liquid level switch measuring device 100 of this example includes: a pipeline 110, a float assembly 120, a strain gauge 130, and an alarm switch 150; wherein the pipeline 110 is threadedly connected to a container 200 containing a liquid to be measured; the float assembly 120 includes a first float 121 and a second float 122, the first float and the second float are arranged in a first accommodating portion 111 of the pipeline 110, and are located at the end of the pipeline 110, corresponding to a preset liquid level, the strain gauge 130 is arranged in the second accommodating portion 112 of the pipeline 110, and the strain gauge 130 is connected to the second float 122; the alarm switch 150 is arranged in the pipeline 110, and the alarm switch 150 corresponds to the strain gauge 130. When measuring the liquid to be measured in the container 200, the liquid to be measured enters the pipeline 110, and the float assembly 120 moves up and down as the liquid level of the liquid to be measured changes, and the strain gauge 130 is deformed accordingly, thereby triggering the alarm switch 150 to operate.

[0056] In addition, a support member 170 is provided on one side of the pipeline 110, and the support member includes a first support wall and a second support wall. The first support wall is provided on the outside of the pipeline 110, one end of the second support wall is connected to the first support wall, and the other end of the second support wall is abutted against the ground, thereby supporting the pipeline.

[0057] Example 2

[0058] like Figure 2 As shown, the example floating liquid level switch measuring device 100 includes: a pipeline 110, a float assembly 120, a strain gauge 130, and an alarm switch 150; wherein the pipeline 110 is connected to a container 200 containing a liquid to be measured via a connector 160; the float assembly 120 includes a first float 121 and a second float 122, the first float and the second float are arranged in a first receiving portion 111 of the pipeline 110, and the pipeline is inserted in the liquid surface, the first float is located inside the pipeline 110, and the position of the first float Corresponding to the preset liquid level, the strain gauge 130 is arranged in the second accommodating portion 112 of the pipeline 110, and at the same time, the strain gauge 130 is connected to the second float 122; the alarm switch component 150 is arranged in the pipeline 110, and the alarm switch component 150 corresponds to the strain gauge 130. When measuring the liquid to be tested in the container 200, the liquid to be tested enters the pipeline 110, and the float assembly 120 moves up and down with the change of the liquid level of the liquid to be tested, and the strain gauge 130 is deformed accordingly, thereby triggering the alarm switch component 150 to operate.

[0059] In addition, a support member 170 is provided on one side of the pipeline 110, and the support member includes a support ring and a first support wall and a second support wall located on both sides of the support ring. The support ring is sleeved on the outside of the pipeline 110, one end of the first support wall is connected to one side of the support ring, and the other end abuts the ground, and one end of the second support wall is connected to one side of the support ring, and the other end abuts the ground, thereby supporting the pipeline.

[0060] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A floating liquid level switch measuring device, characterized in that: include: A pipeline connected to a container containing a liquid to be tested; A float assembly is arranged in the pipeline. A strain gauge is disposed in the pipeline and connected to the float assembly; The alarm switch component is arranged in the pipeline, and the alarm switch component corresponds to the strain gauge. When measuring the liquid to be measured in the container, the float assembly moves up and down with the change of the liquid level of the liquid to be measured, and the strain gauge is deformed accordingly, thereby triggering the alarm switch component to operate.

2. The floating liquid level switch measuring device according to claim 1, characterized in that: The float assembly includes a first float and a second float connected along the length direction of the pipeline; wherein, The first float is located on a side facing the container, and when measuring the liquid to be measured in the container, the first float is in contact with the liquid to be measured; The second float is connected to the strain gauge.

3. The floating liquid level switch measuring device according to claim 2, characterized in that: The first float is located at the end of the pipeline or inside the pipeline, and the position of the first float corresponds to the preset liquid level.

4. The floating liquid level switch measuring device according to claim 2, characterized in that: A first connecting rod is arranged between the first floating ball and the second floating ball.

5. The floating liquid level switch measuring device according to claim 4, characterized in that: The first float, the first connecting rod and the pipeline are made of corrosion-resistant materials.

6. The floating liquid level switch measuring device according to claim 2, characterized in that: A second connecting rod is arranged between the second floating ball and the strain gauge.

7. The floating liquid level switch measuring device according to claim 6, characterized in that: The second float, the second connecting rod and the strain gauge are integrally formed.

8. The floating liquid level switch measuring device according to any one of claims 1 to 7, characterized in that: The pipeline comprises a first accommodating portion and a second accommodating portion; wherein the cross-sectional area of ​​the first accommodating portion is smaller than the cross-sectional area of ​​the second accommodating portion; The first accommodation portion is used to accommodate the float assembly; The second accommodating portion is used to accommodate the strain gauge and the alarm switch component.

9. The floating liquid level switch measuring device according to any one of claims 1 to 7, characterized in that: The device also includes a connecting piece, one end of which is connected to a container containing the liquid to be tested, and the other end of which is connected to a pipeline.

10. The floating liquid level switch measuring device according to any one of claims 1 to 7, characterized in that: The device also includes a support member, one end of which is connected to the outer wall of the pipeline, and the other end of which is arranged on the ground.

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