Strain area structure of novel ultrahigh pressure environment load measuring device

Abstract

The utility model relates to the technical field of resistance strain gauge load measuring devices, and particularly discloses a novel strain area structure of an ultrahigh pressure environment load measuring device, which comprises a strain assembly and a temperature control assembly, and the temperature control assembly is sleeved on the strain assembly; the strain assembly comprises a sealing sleeve, an elastic body and a strain gauge, the sealing sleeve is cylindrical, the sealing sleeve is sleeved on the elastic body, the elastic body is wide at two ends and narrow in the middle, and the middle part of the elastic body is an elastic body strain area. According to the utility model, while the sectional area of a strain area and a smaller occupied space range are considered, the pasting and mounting space of the strain gauge is provided to the greatest extent, the strain gauge is easier to paste, the position is more accurate, the operation is more convenient, and the production cost is reduced while the device can be used in an ultrahigh-pressure use environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of resistance strain gauge load measuring device, specifically relates to a novel strain area structure of ultrahigh pressure environment load measuring device. BACKGROUND

[0002] Resistance strain gauge load measuring device has the characteristics such as high precision, high reliability, is widely used in industrial automation, mechanical manufacturing and other fields. Its basic principle is based on the elastic deformation of elastic body under external force, the resistance strain gauge pasted on the surface of elastic body deforms along with, the resistance value of resistance strain gauge changes along with deformation, the resistance value change causes the current voltage change of measuring circuit, converts into electric signal through measuring circuit, through the change relation of electric signal and elastic body deformation, realizes load measurement.

[0003] Based on the basic working principle of resistance strain gauge type load measuring device, it cannot work normally in pressure environment or / and liquid environment, and needs to be sealed and protected. The higher the pressure environment, the more demanding the protection requirements of load measuring device, and the stress of sealing material in pressure environment is proportional to the pressure bearing area. In the structure of a plurality of strain gauge load measuring devices, even the smallest cylindrical structure needs a large amount of sealing material to protect the strain area when facing ultrahigh pressure environment, but the material of sealing sleeve often uses special materials such as high-temperature alloy to provide enough strength to cope with ultrahigh pressure environment. Special materials are expensive and have high production cost, so according to the design specification of pressure vessel, the inner diameter should be as small as possible to obtain better pressure bearing capacity with less material.

[0004] The existing technology still has the following to be improved: the current device strain area section shape is generally circular, although it can reduce the space occupied by the strain area, reduce the inner diameter of the sealing sleeve and reduce the production cost, but the strain gauge needs to be pasted on the cylindrical curved surface, the pasting space is small, and interference with the sealing sleeve is easy to occur, so that the sealing sleeve cannot be installed. At the same time, the cylindrical curved surface is not conducive to the pasting and pressing of the strain gauge, which may be loose or even fall off. When pasting multiple strain gauges, the cylindrical curved surface cannot provide positioning for the pasting position of the strain gauge, and the accuracy of the pasting process is high. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems existing in the prior art, the utility model provides a strain area structure of a novel ultrahigh pressure environment load measuring device, which can realize the strain area section area and smaller occupied space range of the device at the same time, provide the pasting installation space of the strain gauge to the greatest extent, and make the strain gauge easier to paste, more accurate in position and more convenient to operate, so as to ensure that the device can be used in ultrahigh pressure environment and reduce the production cost.

[0006] The utility model discloses a purpose can be realized through the following technical schemes:

[0007] A strain area structure of novel ultrahigh pressure environment load measuring device, including strain assembly and temperature control component, temperature control component is set in strain assembly,

[0008] Strain assembly includes sealing cover, elastomer and strain gauge, sealing cover is set up in the cylinder type, sealing cover is set in elastomer, and elastomer is set up in the type of two wide middle narrow, and the middle part of elastomer is elastomer strain area,

[0009] Temperature control component includes pressure vessel and water jacket, pressure vessel is set in elastomer, and the inside of pressure vessel is hollow structure, and sealing cover is located in the inside of pressure vessel.

[0010] Preferably, the elastomer strain area is set as a regular polygon, and the strain gauge is provided with multiple pieces, and the multiple pieces of strain gauge are arranged on the plane surface of the regular polygon of the elastomer strain area.

[0011] Preferably, the connecting part of the sealing cover and the elastomer is the two end parts of the elastomer, and a sealing ring is arranged at the connecting part of the sealing cover and the elastomer.

[0012] Preferably, multiple wire outlet holes are arranged on the elastomer, and the multiple wire outlet holes are uniformly distributed in the circumferential direction.

[0013] Preferably, the internal space of the pressure vessel cooperates with the elastomer and the sealing cover to form a pressure area.

[0014] Preferably, the outer surface of the pressure vessel is provided with a fin structure.

[0015] Preferably, the inside of the water jacket is a hollow structure, the water jacket is sleeved on the pressure vessel, and the internal space of the water jacket cooperates with the pressure vessel to form a temperature control space.

[0016] Preferably, the strain gauge is not in contact with the sealing cover.

[0017] The utility model discloses a purpose can be realized through the following technical schemes:

[0018] (1) through the setting strain assembly, the technical effect that can be reached is that the sealing sleeve is cylindrically arranged, and the pressure bearing capacity is better than other shapes, the elastomer strain area is arranged in a regular polygon, in order to enable the device to be used in an ultrahigh pressure environment, the stress index required to be reached by the elastomer is fixed, the cross-sectional area of the elastomer strain area required is a fixed value, and in the ultrahigh pressure use environment, the value of the fixed value is larger, so that the space occupied by the elastomer strain area is larger, the regular polygon arrangement facilitates the space occupied by the elastomer strain area to be smaller while ensuring the cross-sectional area, facilitates the inner diameter of the sealing sleeve to be reduced to reduce the volume of the sealing sleeve as a whole, reduces the use of sealing sleeve material, and reduces the production cost while ensuring that the device can be used in an ultrahigh pressure environment.

[0019] (2) through the setting strain assembly, the technical effect that can be reached is that the regular polygon plane surface of the elastomer strain area makes the strain gauge easier to be pasted and installed, facilitates accurate positioning, and is more convenient to operate, a sealing ring is arranged at the connecting part of the sealing sleeve and the elastomer, the air tightness of the device is ensured, the accuracy of experimental data is ensured, the strain gauge is not in contact with the sealing sleeve, and through the setting of the elastomer with wide ends and narrow middle, space is left in the middle of the sealing sleeve when the sealing sleeve is installed on the elastomer, the strain gauge after pasting and installation does not interfere with the sealing sleeve, the sealing sleeve is prevented from colliding with the strain gauge during installation to cause displacement or falling of the strain gauge, and normal work of the device is ensured.

[0020] (3) through the setting temperature control assembly, the technical effect that can be reached is that the outer surface of the pressure container is provided with a fin structure, the internal space of the water jacket and the pressure container cooperate to form a temperature control space, a constant temperature liquid is conveniently introduced into the temperature control space through a mold temperature controller or a water chiller, the constant temperature liquid continuously flows, heat exchange is performed between the liquid and the internal elastomer strain area, the temperature of the elastomer strain area is maintained in an ideal range of the working temperature of the strain gauge, the fin structure greatly increases the outer surface area of the pressure container, effectively improves the heat exchange efficiency, and the temperature of the strain area can be stabilized when the internal pressure environment is high temperature or low temperature. At the same time, the structure of the fin also plays a role of a pressure container reinforcing ring, can improve the pressure bearing capacity of the pressure container, reduce the wall thickness of the pressure container, reduce the use of materials, and further save costs. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to facilitate understanding of those skilled in the art, the utility model is further described below in combination with the drawings.

[0022] Figure 1 is a perspective view of the utility model;

[0023] Figure 2 is a first sectional view of the utility model;

[0024] Figure 3The second sectional view of the utility model;

[0025] Figure 4 The third sectional view of the utility model;

[0026] Figure 5 The structure diagram of the pressure container and the elastic body in the utility model;

[0027] Figure 6 The structure diagram of the elastic body and the strain gauge in the utility model;

[0028] Main element symbol explanation:

[0029] In the drawing: 1, sealing sleeve; 2, elastic body; 3, strain gauge; 4, elastic body strain area; 5, pressure container; 6, water jacket; 7, temperature control space; 8, pressure area; 9, sealing ring; 10, outgoing line hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application are within the protection scope of the present application.

[0031] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0033] Reference Figures 1 to 6The utility model discloses a novel strain area structure of ultrahigh pressure environment load measuring device, including strain assembly and temperature control component, the temperature control component is sleeved in strain assembly,

[0034] The strain assembly includes a sealing sleeve 1, an elastomer 2, and a strain gauge 3. The sealing sleeve 1 is cylindrically arranged and has better pressure-bearing capacity compared to other shapes. The sealing sleeve 1 is sleeved on the elastomer 2. The elastomer 2 is arranged in a wide-at-both-ends-and-narrow-in-the-middle shape. The middle part of the elastomer 2 is an elastomer strain area 4.

[0035] The temperature control component includes a pressure container 5 and a water jacket 6. The pressure container 5 is sleeved on the elastomer 2. The pressure container 5 is hollow inside. The sealing sleeve 1 is located inside the pressure container 5.

[0036] Referring to Figures 1 to 6 The elastomer strain area 4 is arranged in a regular polygon shape. In order to enable the device to be used in an ultrahigh pressure environment, the stress index required to be reached by the elastomer 2 is fixed. The cross-sectional area of the elastomer strain area 4 is a constant value. In an ultrahigh pressure use environment, the constant value is relatively large, so that the elastomer strain area 4 occupies a relatively large space. The arrangement of the regular polygon shape facilitates reducing the space occupied by the elastomer strain area 4 as a whole while ensuring the cross-sectional area, thereby facilitating reducing the inner diameter of the sealing sleeve 1 to reduce the volume of the sealing sleeve 1 as a whole, reducing the use of sealing sleeve 1 material, and reducing production costs while ensuring that the device can be used in an ultrahigh pressure environment. In the present embodiment, the cross-sectional area of the elastomer strain area 4 is designed as an octagonal structure. When fewer or more strain gauges 3 are required, two sides, four sides, etc. can achieve the same effect. The strain gauge 3 is arranged in multiple pieces. The multiple strain gauges 3 are arranged on the planar surface of the regular polygon of the elastomer strain area 4. The planar surface of the regular polygon of the elastomer strain area 4 makes it easier to paste and install the strain gauge 3, facilitates accurate positioning, and is more convenient to operate. The connection part of the sealing sleeve 1 and the elastomer 2 is the two end parts of the elastomer 2. A sealing ring 9 is arranged at the connection part of the sealing sleeve 1 and the elastomer 2 to ensure the air tightness of the device and the accuracy of experimental data. A plurality of wire holes 10 are arranged on the elastomer 2 and are evenly distributed in a circumferential direction. The internal space of the pressure container 5 cooperates with the elastomer 2 and the sealing sleeve 1 to form a pressure area 8. The leads of the strain gauge 3 are led out of the pressure area 8 through the wire holes 10 on the elastomer 2. The strain gauge 3 does not contact the sealing sleeve 1. The arrangement of the wide-at-both-ends-and-narrow-in-the-middle shape of the elastomer 2 leaves a space in the middle of the sealing sleeve 1 when the sealing sleeve 1 is installed on the elastomer 2. The strain gauge 3 does not interfere with the sealing sleeve 1 after being pasted and installed, avoiding the strain gauge 3 from being displaced or falling off due to the sealing sleeve 1 colliding with the strain gauge 3 during the installation process, and ensuring the normal operation of the device.

[0037] Referring to Figures 1 to 6The outer surface of the pressure container 5 is provided with a fin structure; the inside of the water jacket 6 is a hollow structure, the water jacket 6 is sleeved on the pressure container 5, the inside space of the water jacket 6 and the pressure container 5 cooperate to form a temperature control space 7, the temperature control space 7 is convenient for being poured into constant-temperature liquid through a mold temperature machine or a water chiller, the constant-temperature liquid continuously circulates, the liquid exchanges heat with the internal elastomer strain area 4, the temperature of the elastomer strain area 4 is maintained in the ideal range of the working temperature of the strain gauge 3, the fin structure greatly increases the outer surface area of the pressure container 5, effectively improves the heat exchange efficiency, and still can guarantee that the strain area temperature is stable when the internal pressure environment is high temperature or low temperature, simultaneously, the structure of the fin also plays the role of a reinforcing ring of the pressure container 5, can improve the pressure bearing capacity of the pressure container 5, reduces the wall thickness of the pressure container 5, reduces the use of materials, further saves the cost.

[0038] The working principle and use process of the utility model are as follows: axial ultrahigh pressure is applied to the elastomer 2, the elastomer strain area 4 of the elastomer 2 is deformed, the strain gauge 3 is deformed, the resistance value of the strain gauge 3 changes along with the deformation, the resistance value change causes the current voltage change of a measuring circuit, the current voltage change is converted into an electric signal through the measuring circuit, the load measurement is realized through the change relation between the electric signal and the deformation of the elastomer strain area 4, when the device works, constant-temperature liquid is poured into the temperature control space 7 through a mold temperature machine or a water chiller, the constant-temperature liquid continuously circulates, the liquid exchanges heat with the internal elastomer strain area 4, and the temperature of the elastomer strain area 4 is maintained in the ideal range of the working temperature of the strain gauge 3.

[0039] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above through the preferred embodiment, however, is not used to limit the utility model, any person skilled in the art, within the scope of the technical scheme of the utility model, can make some changes or modifications to the equivalent embodiment of equivalent change through the disclosed technical content, but as long as the change does not deviate from the technical scheme of the utility model, any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, still belongs to the scope of the technical scheme of the utility model.

Claims

1. A strain region structure of a novel ultra-high pressure environmental load measuring device, characterized by: The strain assembly and the temperature control assembly, the temperature control assembly is sleeved on the strain assembly; The strain assembly includes a sealing sleeve (1), an elastomer (2) and a strain gauge (3), the sealing sleeve (1) is cylindrically arranged, the sealing sleeve (1) is sleeved on the elastomer (2), the elastomer (2) is arranged in a wide-in-the-middle-narrow shape, and the middle part of the elastomer (2) is an elastomer strain area (4). The temperature control assembly includes a pressure container (5) and a water jacket (6), the pressure container (5) is sleeved on the elastomer (2), the pressure container (5) is hollow inside, and the sealing sleeve (1) is located inside the pressure container (5).

2. The strain region structure of a novel ultra-high pressure environmental load measuring device according to claim 1, characterized in that: The elastomer strain area (4) is arranged in a regular polygon shape, and the strain gauge (3) is provided with multiple pieces, and the multiple pieces of the strain gauge (3) are arranged on the planar surface of the regular polygon of the elastomer strain area (4).

3. The strain region structure of a novel ultra-high pressure environmental load measuring device according to claim 1, characterized in that: The connecting part of the sealing sleeve (1) and the elastomer (2) is the two end parts of the elastomer (2), and a sealing ring (9) is arranged at the connecting part of the sealing sleeve (1) and the elastomer (2).

4. The strain region structure of a novel ultra-high pressure environmental load measuring device according to claim 1, characterized in that: A plurality of wire outlet holes (10) are arranged on the elastomer (2), and the plurality of wire outlet holes (10) are circumferentially distributed.

5. The strain region structure of a novel ultra-high pressure environmental load measuring device according to claim 1, characterized in that: The internal space of the pressure container (5) cooperates with the elastomer (2) and the sealing sleeve (1) to form a pressure area (8).

6. The strain region structure of a novel ultra-high pressure environmental load measuring device according to claim 5, characterized in that: The outer surface of the pressure container (5) is provided with a fin structure.

7. The strain region structure of a novel ultra-high pressure environmental load measuring device according to claim 6, characterized in that: The water jacket (6) is hollow inside, the water jacket (6) is sleeved on the pressure container (5), and the internal space of the water jacket (6) cooperates with the pressure container (5) to form a temperature control space (7).

8. The strain region structure of a novel ultra-high pressure environmental load measuring device according to claim 2, characterized by: The strain gauge (3) is not in contact with the sealing sleeve (1).

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