Mounting rack for LVDT (Linear Variable Differential Transformer) sensor

Abstract

The utility model relates to an LVDT sensor mounting rack, an LVDT sensor is used for detecting the opening degree of an air inlet valve, the LVDT sensor mounting rack comprises a back plate and a clamping assembly, the LVDT sensor is mounted on the back plate, and the clamping assembly is used for clamping and fixing the back plate to a valve body of the air inlet valve. According to the technical scheme, the vibration amplitude of the LVDT displacement sensor can be reduced through the LVDT sensor mounting frame, and the performance and the measurement accuracy of the LVDT displacement sensor are guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of LVDT sensor installation, and in particular to an LVDT sensor mounting bracket. Background Art

[0002] LVDT (Linear Variable Differential Transformer) is a linear displacement sensor. LVDT displacement sensor is usually installed on the intake valve of a steam turbine to measure the opening of the intake valve.

[0003] In the related art, the LVDT displacement sensor is prone to vibrate to a large extent due to the vibration of the steam turbine, which can easily cause damage to the LVDT displacement sensor and affect the accuracy of the measurement. Utility Model Content

[0004] The purpose of the present disclosure is to provide an LVDT sensor mounting bracket, which can reduce the vibration amplitude of the LVDT displacement sensor and ensure the performance and measurement accuracy of the LVDT displacement sensor.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an LVDT sensor mounting bracket, the LVDT sensor is used to detect the opening of the intake valve, the LVDT sensor mounting bracket includes a back plate and a clamping assembly, the LVDT sensor is mounted on the back plate, and the clamping assembly is used to clamp and fix the back plate to the valve body of the intake valve.

[0006] Optionally, the clamping assembly includes a first clamping member, a second clamping member and a connecting member, one of the first clamping member and the second clamping member is connected to the valve body, and the first clamping member and the second clamping member are detachably connected via the connecting member, and the back plate is inserted between the first clamping member and the second clamping member.

[0007] Optionally, the first clamping member is connected to the valve body, and a thickness of the first clamping member is greater than a thickness of the second clamping member.

[0008] Optionally, the clamping assembly further includes an elastic member, and the connecting member passes through the elastic member to connect the second clamping member to the first clamping member.

[0009] Optionally, the elastic member is configured as an elastic washer, and the thickness of the elastic washer is 1 mm to 5 mm.

[0010] Optionally, the first clamping member is welded to the valve body.

[0011] Optionally, the side surface of the first clamping member close to the valve body is configured as an arc-shaped surface that fits the valve body.

[0012] Optionally, the back plate includes a first part and a second part, the first part and the second part are connected and constructed in an L shape, the first part is parallel to the valve body and is clamped and fixed to the valve body by a clamping assembly, and the second part is connected to one end of the valve body.

[0013] Optionally, the first part is provided with a mounting portion at a middle position along the length direction of the first part, and the mounting portion is used for assembly and cooperation with the clamping assembly.

[0014] Optionally, a gap is formed between the first portion and the valve body.

[0015] Through the above technical scheme, in the LVDT sensor mounting bracket disclosed in the present invention, a back plate and a clamping assembly are provided, the LVDT sensor is mounted on the back plate, and the clamping assembly clamps the back plate and fixes it to the valve body of the intake valve, thereby ensuring the stability of the back plate installation and preventing the back plate from vibrating greatly when the gas valve vibrates during operation, thereby reducing the vibration amplitude of the LVDT sensor, preventing the LVDT sensor from being worn or broken due to excessive vibration amplitude, and improving the stability of the measurement process and the accuracy of the measurement results. In addition, the clamping assembly can prevent the back plate from directly contacting the valve body, thereby reducing the heat transfer efficiency of the high-temperature steam in the valve body and preventing the performance of the LVDT sensor from being affected by excessive temperature.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the installation of the LVDT sensor mounting bracket disclosed in the present invention;

[0019] Figure 2 is an exploded view of the LVDT sensor mounting bracket of the present disclosure;

[0020] Figure 3 is a structural schematic diagram of a first clamping member of an LVDT sensor mounting bracket disclosed in the present invention;

[0021] Figure 4 It is a schematic structural diagram of the second clamping member of the LVDT sensor mounting bracket disclosed in the present invention.

[0022] Description of Reference Numerals

[0023] 1-LVDT sensor; 11-mounting plate; 12-positioning piece; 13-sleeve; 14-feedback rod; 2-intake valve; 21-valve body; 211-cavity; 3-LVDT sensor mounting bracket; 31-back plate; 311-first part; 312-second part; 32-clamping assembly; 321-first clamping piece; 3221-first mounting hole; 3211-side; 322-second clamping piece; 323-connecting piece; 324-elastic piece. DETAILED DESCRIPTION

[0024] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0025] In the present disclosure, unless otherwise stated, the terms "first", "second", etc. used in the present disclosure are intended to distinguish one element from another and do not have order or importance. In the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limiting the present disclosure.

[0026] According to an exemplary embodiment of the present disclosure, referring to Figures 1 to 4 As shown in the figure, an LVDT sensor mounting bracket is provided, the LVDT sensor 1 is used to detect the opening of the intake valve 2, the LVDT sensor mounting bracket 3 includes a back plate 31 and a clamping assembly 32, the LVDT sensor 1 is mounted on the back plate 31, and the clamping assembly 32 is used to clamp and fix the back plate 31 to the valve body 21 of the intake valve 2.

[0027] Through the above technical scheme, in the LVDT sensor mounting frame 3 of the present invention, a back plate 31 and a clamping assembly 32 are provided, the LVDT sensor 1 is mounted on the back plate 31, and the clamping assembly 32 clamps and fixes the back plate 31 to the valve body 21 of the intake valve 2, thereby ensuring the stability of the installation of the back plate 31, and preventing the back plate 31 from vibrating greatly when the gas valve vibrates during operation, thereby reducing the vibration amplitude of the LVDT sensor 1, avoiding the LVDT sensor 1 from being worn or broken due to excessive vibration amplitude, and improving the stability of the measurement process and the accuracy of the measurement results. In addition, the clamping assembly 32 can prevent the back plate 31 from directly contacting the valve body 21, thereby reducing the heat transfer efficiency of the high-temperature steam in the valve body 21, and preventing the performance of the LVDT sensor 1 from being affected by excessive temperature.

[0028] In the present disclosure, a mounting plate 11 can be provided on the back plate 31, on which one or more LVDT sensors 1 can be installed so as to accurately detect the opening of the intake valve 2, wherein a positioning member 12 can be provided on the mounting plate 11, and the sleeve 13 of the LVDT sensor 1 is positioned and installed on the mounting plate 11 through the positioning member 12, thereby improving the installation accuracy of the LVDT sensor 1. Exemplarily, the positioning member 12 can be constructed as an arched structure that fits the sleeve 13 of the LVDT sensor 1, and the sleeve 13 is clamped by the positioning member 12 and the positioning member 12 is connected to the mounting plate 11 through a nut, which has good stability and is convenient for replacing the LVDT sensor 1.

[0029] According to an exemplary embodiment of the present disclosure, referring to Figures 2 to 4 As shown in , the clamping assembly 32 may include a first clamping member 321, a second clamping member and a connecting member, one of the first clamping member 321 and the second clamping member is connected to the valve body 21, and the first clamping member 321 and the second clamping member are detachably connected through the connecting member, and the back plate 31 is inserted between the first clamping member 321 and the second clamping member. In the above technical solution, the connecting member may be a screw or a bolt, and a first mounting hole 3221 may be provided at both ends of the first clamping member 321, and a second mounting hole corresponding to the first mounting hole 3221 may be provided on the second clamping member, and the connecting member passes through the second mounting hole and is connected to the corresponding first mounting hole 3221, so that the back plate 31 is clamped and fixed between the first clamping member 321 and the second clamping member, so as to ensure the stability of the back plate 31 and avoid large vibration of the back plate 31.

[0030] According to an exemplary embodiment of the present disclosure, referring to Figure 2 As shown in , the first clamping member 321 can be connected to the valve body 21, and the thickness of the first clamping member 321 is greater than the thickness of the second clamping member. In this way, the first clamping member 321 has a higher strength than the second clamping member, and has a long service life, which avoids frequent replacement of the first clamping member 321 and reduces the burden of later maintenance.

[0031] In order to ensure the reliability of the installation of the first clamping member 321, the first clamping member 321 can be welded to the valve body 21. In this way, when the valve body 21 vibrates, the first clamping member 321 is prevented from loosening due to continuous vibration, and the use is safer and more reliable.

[0032] According to an exemplary embodiment of the present disclosure, referring to Figure 2 and Figure 3As shown in , the side of the first clamping member 321 close to the valve body 21 is configured as an arcuate surface that fits the valve body 21. By configuring in this way, the first clamping member 321 can better fit the side of the valve body 21, facilitate welding, and ensure the reliability of the connection between the first clamping member 321 and the valve body 21.

[0033] According to an exemplary embodiment of the present disclosure, referring to Figure 2 As shown in , the clamping assembly 32 may further include an elastic member, and the connecting member passes through the elastic member to connect the second clamping member to the first clamping member 321. Here, the elastic member has a buffering property, thereby playing a role of buffering and shock absorption, and the elastic member can better adapt to the clamping force and improve the uniformity of the clamping force, thereby ensuring that the back plate 31 is fixed more stably and is not prone to vibration.

[0034] Among them, the elastic member can be constructed as an elastic gasket, and the thickness of the elastic gasket is 1mm to 5mm. Through such a setting, it is easy to install the elastic member, and the thickness of the elastic member can be flexibly set according to the use requirements. For example, the thickness of the elastic member can be 1mm, 2mm, 4mm or 5mm. In this way, when the back plate 31 is clamped and fixed by the clamping assembly 32, elastic members of different thicknesses can be selected according to the thickness of the back plate 31. Here, a gasket can also be provided. The connecting member passes through the gasket and the elastic member in turn and is connected to the first mounting hole 3221 on the first clamping member 321, so that the elastic member is evenly squeezed to improve the stability of the overall connection.

[0035] According to an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 2As shown in the figure, the back plate 31 may include a first part 311 and a second part 312, the first part 311 and the second part 312 are connected and constructed in an L shape, the first part 311 is parallel to the valve body 21 and is clamped and fixed to the valve body 21 by a clamping assembly 32, and the second part 312 is connected to one end of the valve body 21. In the above technical solution, the first part 311 and the second part 312 can be integrally formed, so that the integrity of the back plate 31 structure and the reliability of the connection are guaranteed. A mounting plate 11 can be set on the first part 311, and then the LVDT sensor 1 can be installed on the mounting plate 11, so that the LVDT sensor 1 can detect the intake valve 2. The second part 312 is connected to one end of the valve body 21, so that the back plate 31 can be connected to one end of the valve body 21 on the basis of being clamped and fixed to the valve body 21 by the clamping assembly 32, thereby improving the reliability of the back plate 31 fixation and avoiding the vibration of the back plate 31. In addition, since the cavity 211 of the valve body 21 is filled with hot steam and the end of the valve body 21 is far away from the cavity 211, the second part 312 is connected to one end of the valve body 21, which reduces the efficiency of heat transfer and thereby avoids the influence of high temperature on the LVDT sensor 1.

[0036] According to an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 2 As shown in , the first part 311 is provided with a mounting portion at a middle position along the length direction of the first part 311, and the mounting portion is used to assemble and cooperate with the clamping assembly 32. In this way, the clamping assembly 32 can clamp and fix the middle position of the back plate 31, so that the middle position of the back plate 31 is effectively supported and fixed, and the overall stability of the back plate 31 is improved, wherein the mounting portion can be configured as a through slot, the through slot extends along a direction perpendicular to the extension direction of the first part 311, and the number of through slots can be set to one, at this time, a through slot can be provided on the side of the first part 311 close to the first clamping member 321, and the width of the through slot can be adapted to the first clamping member 321, so that the first clamping member 321 can be embedded in the through slot, so as to position and install the back plate 31 through the through slot, in addition, the number of through slots can also be set to two, the two through slots are oppositely arranged on the opposite two sides of the first part 311, and the width of the two through slots can be adapted to the first clamping member 321 and the second clamping member, respectively, to position and install the back plate 31.

[0037] According to an exemplary embodiment of the present disclosure, referring to Figure 2As shown in , a gap is formed between the first part 311 and the valve body 21. Here, the size of the gap can be controlled according to the thickness of the first clamping member 321, so as to avoid the first part 311 from contacting the valve body 21, block the heat conduction of the hot steam in the cavity 211, play a role of heat insulation, thereby preventing the back plate 31 from being overly high and affecting the performance of the LVDT sensor 1, and improving the safety and reliability of the detection.

[0038] refer to Figures 1 to 4 As shown in , the specific implementation principle of the embodiment of the present disclosure is: the first part 311 of the back plate 31 is placed on the first clamping member 321, and the mounting portion is made to correspond to the first clamping member 321. At this time, the second part 312 of the back plate 31 is fitted with one end of the valve body 21, and the second part 312 can be connected to the corresponding end of the valve body 21 by welding. Then, the second clamping member is placed at the mounting position of the back plate 31, so that the first part 311 is located between the first clamping member 321 and the second clamping member, and the connecting member passes through the gasket, the elastic member, and the second mounting hole in sequence and is connected to the corresponding first mounting hole 3221 on the first clamping member 321, so as to be The back plate 31 is clamped and fixed to the valve body 21, and the LVDT sensor 1 is placed on the mounting plate 11, so that the sleeve 13 of the LVDT sensor 1 corresponds to the position of the positioning piece 12, and the feedback rod 14 of the LVDT sensor 1 corresponds to the detection position of the valve (such as the valve stem). The sleeve 13 of the LVDT sensor 1 is fixed by the positioning piece 12, and the LVDT sensor 1 can be installed on the intake valve 2, and the intake valve 2 can be detected, thereby reducing the vibration of the LVDT sensor 1 and improving the detection accuracy. At the same time, it also avoids the influence of high temperature on the performance of the LVDT sensor 1, and improves the safety and reliability of the detection process.

[0039] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0041] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An LVDT sensor mounting bracket, wherein the LVDT sensor is used to detect the opening of an intake valve, characterized in that: The LVDT sensor mounting frame comprises a back plate and a clamping assembly, the LVDT sensor is mounted on the back plate, and the clamping assembly is used to clamp and fix the back plate to the valve body of the intake valve.

2. The LVDT sensor mounting bracket according to claim 1, characterized in that: The clamping assembly includes a first clamping member, a second clamping member and a connecting member, one of the first clamping member and the second clamping member is connected to the valve body, and the first clamping member and the second clamping member are detachably connected through the connecting member, and the back plate is inserted between the first clamping member and the second clamping member.

3. The LVDT sensor mounting bracket according to claim 2, characterized in that: The first clamping member is connected to the valve body, and the thickness of the first clamping member is greater than the thickness of the second clamping member.

4. The LVDT sensor mounting bracket according to claim 3, characterized in that: The clamping assembly further includes an elastic member, and the connecting member passes through the elastic member to connect the second clamping member to the first clamping member.

5. The LVDT sensor mounting bracket according to claim 4, characterized in that: The elastic member is configured as an elastic washer, and the thickness of the elastic washer is 1 mm to 5 mm.

6. The LVDT sensor mounting bracket according to claim 3 or 4, characterized in that: The first clamping member is welded to the valve body.

7. The LVDT sensor mounting bracket according to claim 6, characterized in that: The side surface of the first clamping member close to the valve body is configured as an arc-shaped surface that fits the valve body.

8. The LVDT sensor mounting bracket according to claim 1, characterized in that: The back plate includes a first part and a second part, the first part and the second part are connected and constructed in an L shape, the first part is parallel to the valve body and is clamped and fixed to the valve body by a clamping assembly, and the second part is connected to one end of the valve body.

9. The LVDT sensor mounting bracket according to claim 8, characterized in that: The first part is provided with a mounting portion at a middle position along the length direction of the first part, and the mounting portion is used for assembly and cooperation with the clamping assembly.

10. The LVDT sensor mounting bracket according to claim 8, characterized in that: A gap is formed between the first portion and the valve body.

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