Wear-resistant pressure transmitter

Abstract

The utility model discloses a wear-resistant pressure transmitter. The wear-resistant pressure transmitter comprises a supporting mechanism, a sensing mechanism and a protection mechanism, a sensor mechanism is arranged in the supporting mechanism, a protection mechanism is arranged below the sensor mechanism, the protection mechanism can touch the sensor mechanism, and the sensor mechanism transmits a pressure signal. The pressure transmitter has the advantages that pressure output signals are converted through the pressure transmitter, abrasion resistance can be improved through the protective film, unstable output of the pressure transmitter can be effectively avoided through the air holes in the protective film, small blocky media such as pebbles and coal cinder can be effectively prevented from making direct contact with the pressure transmitter, and the pressure transmitter is prevented from being damaged. The waterproof performance can be improved through the supporting mechanism, the internal sensing mechanism can be protected, an aviation plug with an air guiding function is adopted through the plug mechanism, a drying agent is placed in the inner supporting mechanism, and the influence on the pressure transmitter after water vapor condensation is avoided; the sensor is small in measuring range and high in precision, and the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to a wear-resistant pressure transmitter. Background Art

[0002] As a process monitoring instrument, pressure transmitters are widely used in various fields such as petroleum and petrochemical, water conservancy, steel metallurgy, textile manufacturing, etc. However, for certain specific occasions, such as coal washing and selection, concrete slurry mixing, engineering shield, etc., where there are obvious lumps, whether it is a traditional metal isolation diaphragm or a non-metallic ceramic diaphragm, it is inevitable that it will directly contact the lumps during use, resulting in deformation or even damage to the diaphragm or sensor; and the range of strain gauge pressure transmitters generally exceeds 1MPa, which cannot be used for small-range measurements. For this reason, the inventor designed a wear-resistant pressure transmitter. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the above problems or problems existing in the prior art, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a wear-resistant pressure transmitter, which can convert the output signal of pressure through a pressure transmitter, and the wear resistance can be increased by a protective film. The air holes on the protective film can effectively avoid the unstable output of the pressure transmitter, and can also effectively prevent small block media such as stones and coal slag from directly contacting the pressure transmitter. The waterproof and protection levels can be improved by a supporting mechanism.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a wear-resistant pressure transmitter, which includes a supporting mechanism, a sensor mechanism, and a protective mechanism; a sensor mechanism is arranged inside the supporting mechanism, and a protective mechanism is arranged below the sensor mechanism, the protective mechanism can touch the sensor mechanism, and the sensor mechanism can transmit a pressure signal.

[0007] As a preferred solution of the wear-resistant pressure transmitter of the utility model, the sensor mechanism includes a circuit board assembly and a pressure transmitter; a circuit board assembly is arranged on the side of the pressure transmitter, and the circuit board assembly can control the pressure transmitter to work.

[0008] As a preferred solution of the wear-resistant pressure transmitter of the utility model, the circuit board assembly includes a circuit board, a circuit board bracket and a circuit board transition piece; a circuit board is arranged on the circuit board bracket, a circuit board transition piece is arranged on the side of the circuit board bracket, and the circuit board is connected to the pressure transmitter.

[0009] As a preferred solution of the wear-resistant pressure transmitter of the utility model, a pressure ring is arranged above the pressure transmitter, and the pressure ring can fix the pressure transmitter.

[0010] As a preferred solution of the wear-resistant pressure transmitter of the utility model, the support mechanism includes an external support mechanism and an internal support mechanism, the internal support mechanism is arranged inside the external support mechanism, and the external support mechanism and the internal support mechanism can protect and support the sensor mechanism.

[0011] As a preferred solution of the wear-resistant pressure transmitter of the utility model, the protection mechanism includes a protection film and a pressure transmitter, and the protection film can be elastically in contact with the pressure transmitter.

[0012] As a preferred solution of the wear-resistant pressure transmitter of the utility model, a plurality of air holes are provided on the protective film, and the air holes can allow air to pass through the sensor mechanism.

[0013] As a preferred solution of the wear-resistant pressure transmitter of the utility model, it also includes a plug mechanism, which is arranged above the sensor mechanism, and the plug mechanism is electrically connected to the sensor mechanism.

[0014] As a preferred solution of the wear-resistant pressure transmitter of the utility model, it also includes a flange, which is connected to the upper end of the supporting mechanism through a fixing member, and a plug mechanism is also arranged on the flange.

[0015] As a preferred solution of the wear-resistant pressure transmitter of the utility model, a protective cover is arranged on the side of the plug mechanism, and the protective cover can protect the plug mechanism.

[0016] The beneficial effects of the utility model are as follows: the utility model converts the output signal of the pressure through the pressure transmitter, and the wear resistance can be increased by the protective film. The air holes on the protective film can effectively avoid the situation that the output of the pressure transmitter is unstable, and it can also effectively avoid the direct contact of small block media such as stones and coal slag with the pressure transmitter. The supporting mechanism can improve the waterproofness and protect the internal sensor mechanism. The plug mechanism adopts an aviation plug with an air guide function, and a desiccant is placed inside the inner protective tube to avoid the influence of water vapor condensation on the pressure transmitter, so that the protection level of the product can reach IP67; the device has good wear resistance; the sensor has a small range and high precision, which greatly improves the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is the overall schematic diagram of the wear-resistant pressure transmitter.

[0019] Figure 2 This is a top view of the wear-resistant pressure transmitter.

[0020] Figure 3 for Figure 2 Cross-sectional view of the medium wear-resistant pressure transmitter at AA. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Example 1

[0025] Reference Figures 1 to 3 , which is the first embodiment of the utility model, provides a wear-resistant pressure transmitter, which includes a supporting mechanism 1, a sensor mechanism 2, and a protective mechanism 3; by arranging the sensor mechanism 2 inside the supporting mechanism 1, the sensor mechanism 2 can be protected, and by the protective mechanism 3 being in contact with the sensor mechanism 2, a corresponding pressure signal can be output.

[0026] Specifically, the support mechanism 1, the sensor mechanism 2, and the protection mechanism 3; the sensor mechanism 2 is arranged inside the support mechanism 1, and the protection mechanism 3 is arranged below the sensor mechanism 2, the protection mechanism 3 can touch the sensor mechanism 2, and the sensor mechanism 2 can transmit a pressure signal.

[0027] In summary, the utility model can improve the protection level through the support mechanism 1, and can prevent external blocks from directly contacting the sensor mechanism 2 through the protection mechanism 3. The protection mechanism 3 can protect the sensor mechanism 2, and will contact the sensor mechanism 2 when subjected to force, and output a corresponding pressure signal according to the pressure applied to the sensor mechanism 2.

[0028] Example 2

[0029] Reference Figures 1 to 3 , which is the second embodiment of the utility model. In the previous embodiment, the wear-resistant pressure transmitter includes a supporting mechanism 1, a sensor mechanism 2, and a protective mechanism 3; by arranging the sensor mechanism 2 inside the supporting mechanism 1, the sensor mechanism 2 can be protected, and by the protective mechanism 3 being in contact with the sensor mechanism 2, a corresponding pressure signal can be output.

[0030] Specifically, the support mechanism 1, the sensor mechanism 2, and the protection mechanism 3; the sensor mechanism 2 is arranged inside the support mechanism 1, and the protection mechanism 3 is arranged below the sensor mechanism 2, the protection mechanism 3 can touch the sensor mechanism 2, and the sensor mechanism 2 can transmit a pressure signal.

[0031] Furthermore, the sensor mechanism 2 includes a circuit board assembly 21 and a pressure transmitter 22 ; the circuit board assembly 21 is disposed on the side of the pressure transmitter 22 , and the circuit board assembly 21 can control the pressure transmitter 22 to work.

[0032] Preferably, the pressure transmitter 22 is a ceramic capacitor sensor; its pressure sensing capability has a pressure loss of ≤2 kPa and an accuracy of up to 0.2 level.

[0033] Furthermore, the circuit board assembly 21 includes a circuit board 211 , a circuit board bracket 212 and a circuit board transition piece 213 ; the circuit board 211 is arranged on the circuit board bracket 212 , the circuit board transition piece 213 is arranged on the side of the circuit board bracket 212 , and the circuit board 211 is connected to the pressure transmitter 22 .

[0034] Preferably, the circuit board 211 can be supported by the circuit board bracket 212 , and the circuit board 211 is connected to the pressure transmitter 22 through the circuit board 211 .

[0035] Furthermore, a pressure ring 23 is disposed above the pressure transmitter 22 , and the pressure ring 23 can fix the pressure transmitter 22 .

[0036] Preferably, the pressure transmitter 22 can be fixed inside the supporting mechanism 1 by a pressure ring 23 .

[0037] Furthermore, the support mechanism 1 includes an outer support mechanism 11 and an inner support mechanism 12 . The inner support mechanism 12 is arranged inside the outer support mechanism 11 . The outer support mechanism 11 and the inner support mechanism 12 can provide protective support for the sensor mechanism 2 .

[0038] Furthermore, the protection mechanism 3 includes a protection film 31 and a pressure transmitter 22 , and the protection film 31 can be in elastic contact with the pressure transmitter 22 .

[0039] Preferably, the protective film 31 is made of wear-resistant protective film PU polyurethane.

[0040] Furthermore, the protective film 31 is provided with a plurality of ventilation holes, and the ventilation holes can allow ventilation to the sensor mechanism 2 .

[0041] Preferably, in order to avoid the situation in which the pressure transmitter 22 output is unstable due to holding the breath during the installation process, five φ1 small holes are opened on the protective film 31, which can also effectively prevent small block media such as stones and coal slag from directly contacting the sensor.

[0042] Furthermore, it also includes a plug mechanism 4 , which is arranged above the sensor mechanism 2 , and the plug mechanism 4 is electrically connected to the sensor mechanism 2 .

[0043] Furthermore, it also includes a flange 5 , which is connected to the upper end of the support mechanism 1 through a fixing member, and a plug mechanism 4 is also provided on the flange 5 .

[0044] Preferably, a gasket is provided between the flange 5 and the supporting mechanism 1, and buffering can be achieved through the gasket.

[0045] Preferably, the flange 5 is provided with fixing holes.

[0046] Preferably, the plug mechanism 4 adopts an aviation plug with air-conducting function.

[0047] Preferably, the protection grade of this product is IP67. To ensure that the atmospheric reference of the sensor is the same as the external atmospheric pressure, an aviation plug with an air guide function is used, and a desiccant is placed inside the inner support mechanism 12 to avoid the influence of water vapor condensation on the ceramic capacitor sensor.

[0048] Furthermore, a protective cover 6 is provided on the side of the plug mechanism 4 , and the protective cover 6 can protect the plug mechanism 4 .

[0049] Preferably, the protective cover 6 is provided with a receiving groove for allowing an external plug to pass through.

[0050] In summary, the utility model converts the output signal of the pressure through the pressure transmitter 22, and the wear resistance can be increased by the protective film 31. The air holes on the protective film 31 can effectively avoid the unstable output of the pressure transmitter 22, and can also effectively avoid small block media such as stones and coal slag from directly contacting the pressure transmitter 22. The support mechanism 1 can improve the waterproofness and protect the internal sensor mechanism 2. The plug mechanism 4 adopts an aviation plug with an air guide function, and a desiccant is placed inside the inner protective tube to avoid the influence of water vapor condensation on the pressure transmitter 22, so that the product protection level can reach IP67; the device has good wear resistance; the sensor has a small range and high precision, which greatly improves the service life.

[0051] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A wear-resistant pressure transmitter, characterized in that: The invention comprises a support mechanism (1), a sensor mechanism (2), and a protection mechanism (3); the sensor mechanism (2) is arranged inside the support mechanism (1), and the protection mechanism (3) is arranged below the sensor mechanism (2); the protection mechanism (3) can touch the sensor mechanism (2), and the sensor mechanism (2) can transmit a pressure signal.

2. The wear-resistant pressure transmitter according to claim 1, characterized in that: The sensor mechanism (2) comprises a circuit board assembly (21) and a pressure transmitter (22); the circuit board assembly (21) is arranged on the side of the pressure transmitter (22), and the circuit board assembly (21) can control the pressure transmitter (22) to operate.

3. The wear-resistant pressure transmitter according to claim 2, characterized in that: The circuit board assembly (21) comprises a circuit board (211), a circuit board bracket (212) and a circuit board transition piece (213); the circuit board (211) is arranged on the circuit board bracket (212), the circuit board transition piece (213) is arranged on the side of the circuit board bracket (212), and the circuit board (211) is connected to the pressure transmitter (22).

4. The wear-resistant pressure transmitter according to claim 2, characterized in that: A pressure ring (23) is arranged above the pressure transmitter (22), and the pressure ring (23) can fix the pressure transmitter (22).

5. The wear-resistant pressure transmitter according to any one of claims 1 to 4, characterized in that: The support mechanism (1) comprises an outer support mechanism (11) and an inner support mechanism (12); the inner support mechanism (12) is arranged inside the outer support mechanism (11); the outer support mechanism (11) and the inner support mechanism (12) can provide protective support for the sensor mechanism (2).

6. The wear-resistant pressure transmitter according to claim 1, characterized in that: The protection mechanism (3) comprises a protection film (31) and a pressure transmitter (22), and the protection film (31) can be elastically in contact with the pressure transmitter (22).

7. The wear-resistant pressure transmitter according to claim 6, characterized in that: The protective film (31) is provided with a plurality of ventilation holes, and the ventilation holes can allow ventilation to the sensor mechanism (2).

8. The wear-resistant pressure transmitter according to claim 1, characterized in that: It also comprises a plug mechanism (4), which is arranged above the sensor mechanism (2) and is electrically connected to the sensor mechanism (2).

9. The wear-resistant pressure transmitter according to any one of claims 1 to 4, characterized in that: It also comprises a flange (5), wherein the flange (5) is connected to the upper end of the support mechanism (1) via a fixing member, and a plug mechanism (4) is also arranged on the flange (5).

10. The wear-resistant pressure transmitter according to claim 9, characterized in that: A protective cover (6) is provided on the side of the plug mechanism (4), and the protective cover (6) can protect the plug mechanism (4).

Images