Pressure guiding assembly and pressure transmitter

Abstract

The utility model provides a pressure guiding assembly and a pressure transmitter. The pressure guiding assembly comprises a process flange used for installing a pressure measuring diaphragm capsule of the pressure transmitter; the pressure guiding pipe is used for guiding the pressure of the to-be-measured medium; wherein the process flange and the pressure guiding pipe are integrally formed, communicated pressure guiding cavities are formed in the process flange and the pressure guiding pipe, one end of each pressure guiding cavity is suitable for being communicated with the medium to be measured, and the other end of each pressure guiding cavity is suitable for being communicated with an inner cavity of the pressure measuring diaphragm capsule; the pressure transmitter comprises the pressure guiding assembly. The sealing performance between the process flange and the pressure guide pipe can be enhanced, so that the overall structural strength of the component can be enhanced, and the production and manufacturing process can be simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure transmitter technical field, concretely relates to a pressure lead -in subassembly, pressure transmitter. BACKGROUND

[0002] At present, the process flange and the pressure lead -in pipe of the traditional pressure transmitter are usually manufactured separately and then assembled through welding, threaded connection and the like, and this assembly mode has many disadvantages: 1, the connecting part is easy to leak, and the welding or threaded connection part inevitably has a small gap, under the influence of long -term pressure fluctuation, temperature change and medium corrosion and the like, is easy to appear the leakage phenomenon, leads to the inaccuracy of pressure measurement, even causes the safety accident, 2, the structural strength is limited, and the existence of the connecting part makes the strength distribution of the overall structure uneven, when bearing high pressure or impact load, the connecting part is easy to become the weak link, reduces the reliability and service life of the pressure transmitter, 3, the manufacturing process is complex, and the separate manufacturing and assembly need multiple processes, increase production time and cost, and the operation skill requirement of workers is higher, and any process problem can affect product quality.

[0003] Therefore, it is necessary to develop a new pressure transmitter process flange and pressure lead -in pipe structure to solve the problems in the prior art. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of pressure lead -in subassembly and pressure transmitter, to enhance the sealing between process flange and pressure lead -in pipe, so in addition to being able to enhance the structural strength of component whole, it can simplify production manufacturing process.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A pressure lead -in subassembly is used in pressure transmitter, and the pressure lead -in subassembly includes:

[0007] Process flange, for installing the pressure measuring diaphragm of the pressure transmitter;

[0008] Pressure lead -in pipe, for leading pressure to be measured medium;

[0009] Wherein, the process flange and pressure lead -in pipe are integrally formed, the process flange and pressure lead -in pipe are provided with the pressure lead -in cavity that is communicated, one end of the pressure lead -in cavity is suitable for being communicated with the to-be-measured medium, and the other end is suitable for being communicated with the inner chamber of the pressure measuring diaphragm.

[0010] In some embodiments of the utility model, the process flange and pressure lead -in pipe are integrally formed by casting or machining.

[0011] In some embodiments of the utility model, the material of the pressure lead -in subassembly is metal material.

[0012] Or, the material of the pressure lead assembly is a polymer material.

[0013] In some embodiments of the utility model, the connecting part of the process flange and the pressure lead pipe is provided with a reinforcing part, the reinforcing part is arranged around the outer periphery of the pressure lead pipe to enhance the structural strength of the connecting part.

[0014] In some embodiments of the utility model, the reinforcing part is a cone, and the tapered tip of the cone faces the pressure lead pipe.

[0015] In some embodiments of the utility model, the reinforcing part is a reinforcing rib, and the reinforcing rib is arranged along the longitudinal direction of the pressure lead pipe.

[0016] In some embodiments of the utility model, the radial dimension of the reinforcing rib gradually increases in the direction away from the pressure lead pipe.

[0017] In some embodiments of the utility model, the length of the pressure lead pipe is 50-200mm, the outer diameter is 10-25mm, and the inner diameter is 5-16mm.

[0018] In some embodiments of the utility model, the process flange is suitable for being fixed with the pressure diaphragm chamber by welding.

[0019] In some embodiments of the utility model, bolt holes are arranged on the process flange, and the bolt holes on the process flange are suitable for being aligned with the bolt holes on the pressure diaphragm chamber of the pressure transmitter to insert bolts and be fixed by thread cooperation.

[0020] To achieve the above purpose, the utility model also provides the following technical scheme:

[0021] A pressure transmitter, the pressure transmitter comprises:

[0022] A pressure transmitter, the pressure transmitter comprises:

[0023] The pressure lead assembly described above;

[0024] A pressure diaphragm chamber is installed on the process flange of the pressure lead assembly and communicates with the pressure lead cavity inside the process flange.

[0025] In some embodiments of the utility model, the number of pressure lead assemblies is two, the process flanges of the two pressure lead assemblies are connected with the positive and negative sides of the pressure diaphragm chamber respectively, so that the pressure lead cavities in each pressure lead assembly respectively communicate with one pressure diaphragm sheet in the pressure diaphragm chamber.

[0026] Other applicable fields will become apparent from the description provided in the present disclosure.

[0027] The descriptions and specific examples in this utility model are intended to be illustrative only and are not intended to limit the scope of this disclosure.

[0028] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0029] 1. The integrated pressure-sensing assembly provided by this utility model can enhance the sealing between the process flange and the pressure-sensing pipe. In addition to enhancing the overall structural strength of the component, it can also simplify the manufacturing process.

[0030] 2. The integrated pressure-sensing assembly provided by this utility model has excellent sealing performance, eliminating the problem of poor sealing performance at the connection between conventional process flanges and pressure-sensing pipes, avoiding leakage of the tested medium, ensuring the accuracy of pressure measurement results, and also ensuring safety.

[0031] 3. The integrated pressure-sensing assembly provided by this utility model has high structural strength and can withstand high pressure or impact loads, thereby improving the reliability and service life of the pressure transmitter that uses this pressure-sensing assembly.

[0032] 4. The integrated pressure-pressing component provided by this utility model requires fewer manufacturing steps, reducing production time and costs. It also does not require high operational skills from workers and has a high yield rate. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the pressure-applying assembly provided in the first embodiment of this utility model from a first viewing angle;

[0035] Figure 2 for Figure 1 A schematic diagram of the pressure-applying component from a second viewing angle;

[0036] Figure 3 for Figure 1 A schematic diagram of the pressure-applying component from a third-view perspective;

[0037] Figure 4 for Figure 1 A schematic diagram of the pressure-applying component from a fourth viewing angle;

[0038] Figure 5 forFigure 4 a cross-sectional view along A-A of the pressure lead-in assembly in

[0039] Figure 6 a structural schematic view of the pressure lead-in assembly in the second embodiment of the present application from a fifth observation angle;

[0040] Figure 7 a structural schematic view of the pressure lead-in assembly in the second embodiment of the present application from a sixth observation angle; Figure 6

[0041] Figure 8 a structural schematic view of the pressure transmitter provided by the third embodiment of the present application.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 1 - process flange; 10 - bolt hole on the process flange; 2 - pressure lead-in pipe; 3 - pressure lead-in cavity; 4 - cone; 5 - reinforcing rib; 6 - pressure measuring diaphragm capsule; 7 - measuring pipe; 8 - electronic cabin. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the present application. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0045] Any specific numerical value (including the endpoints of a range of numerical values) disclosed herein should be understood to be approximate rather than exact, and to comprise the meaning and range of values that are reasonably similar to that specific value. Also, any numerical range recited herein is intended to include all sub-ranges of the same entire range, and every individual number within that range, unless the context clearly indicates otherwise. Furthermore, all the numerical ranges disclosed herein are approximate, meaning that the

[0046] ​The terminology used by the present disclosure is intended to be interpreted in only a descriptive manner and not as a limitation on the scope of the particular exemplary embodiments. As used throughout this disclosure, the singular forms "a," "an," and "the" include plural reference unless the context clearly dictates otherwise. The terms "comprises," "comprising," "includes," "including," "contains," and "containing," are inclusive and therefore specify the presence of stated features, integers, compositions, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, compositions, steps, operations, elements, components, and / or groups thereof. Although the open-ended term "comprising," when used in the description or the claims, is intended to be interpreted to allow for the inclusion of one or more features, integers, compositions, steps, operations, elements, and / or components in the described or claimed implementation, in certain aspects, this term is instead read as a more limiting and restrictive term, such as "consisting of or "consisting essentially of, in opposition to the open-ended term. Thus, with respect to any given implementation reciting a composition, material, composition, element, feature, integer, operation, and / or process step, the present disclosure also specifically includes implementations consisting of or consisting essentially of such described or claimed composition, material, composition, element, feature, integer, operation, and / or process step. In the case of "consisting of," the alternative implementation excludes any additional composition, material, composition, element, feature, integer, operation, and / or process step, while in the case of "consisting essentially of," any additional composition, material, composition, element, feature, integer, operation, and / or process step that does not materially affect the basic and novel characteristic(s) is excluded from such implementation.

[0047] Any method steps, processes, and operations described in the present disclosure are not to be construed as necessarily requiring their performance in the particular order in which they are discussed or illustrated unless expressly stated as such. It is also to be understood that additional or alternative steps can be employed, unless otherwise stated.

[0048] In this application, unless otherwise stated, any of the terms "comprise", "comprising", "contain", "containing", "include", "including" and "has", "having", or any of their conjugations, are to be construed in an inclusive sense as opposed to an exclusive sense, that is, to specify the presence of the stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0049] Unless otherwise defined, all terms used in disclosing embodiments of the invention, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If any term is defined differently from the meaning commonly understood by one of ordinary skill in the art, this disclaimer will be specifically defined herein. All patents and publications are incorporated by reference herein.

[0050] The first aspect

[0051] Referring to Figures 1 to 5 And Figure 8 The utility model provides a pressure leading assembly for pressure transmitter, the pressure leading assembly includes: process flange 1 for installing pressure measuring diaphragm chamber 6 of pressure transmitter, pressure leading pipe 2 for leading pressure to be measured medium, wherein, process flange 1 and pressure leading pipe 2 are integrally formed, and the inside of process flange 1 and pressure leading pipe 2 is equipped with the pressure leading cavity 3 of intercommunication, one end of pressure leading cavity 3 is suitable for with the medium to be measured intercommunication, and the other end is suitable for with the inner chamber of pressure measuring diaphragm chamber 6 intercommunication.

[0052] The integrally formed pressure leading assembly can enhance the sealing between the process flange and the pressure leading pipe, which can not only enhance the overall structural strength of the component, but also simplify the production and manufacturing process. The integrally formed pressure leading assembly has good sealing performance, eliminates the poor sealing problem at the connection between the conventional process flange and the pressure leading pipe, avoids the problem of leakage of the medium to be measured, ensures the accuracy of the pressure measurement result, and ensures safety. The integrally formed pressure leading assembly has high structural strength and can withstand high pressure or impact load, thereby improving the reliability and service life of the pressure transmitter using the pressure leading assembly. The integrally formed pressure leading assembly requires fewer manufacturing processes, reduces production time and cost, has high good product rate, and has lower requirements for the operation skills of workers.

[0053] It is worth noting that, referring to Figure 8 In some embodiments of the utility model, the inner chamber of the pressure measuring diaphragm chamber 6 is provided with a pair of pressure measuring diaphragms, one of which is arranged at the positive end of the pressure measuring diaphragm chamber 6, and the other is arranged at the negative end of the pressure measuring diaphragm chamber 6. The ends of the two pressure measuring diaphragms facing away from each other can be in contact with the medium to be measured to bear pressure. Further, in some embodiments, two pressure leading assemblies can be used in combination with one pressure measuring diaphragm chamber 6, wherein the pressure leading cavity 3 in one of the pressure leading assemblies is connected to one of the pressure measuring diaphragms in the pressure measuring diaphragm chamber 6 at one end of the process flange 1 thereof, and the pressure leading cavity 3 in the other pressure leading assembly is connected to the other pressure measuring diaphragm in the pressure measuring diaphragm chamber 6 at one end of the process flange 1 thereof.

[0054] In some embodiments of the utility model, the process flange 1 and the pressure leading pipe 2 are integrally formed by casting or machining.

[0055] Specifically, the process flange 1 and the pressure lead pipe 2 in the prior art are manufactured separately, and some metal process flanges 1 and pressure lead pipes 2 are combined together by welding after being manufactured, which is not integrally formed. The utility model is directly cast into an integral process flange 1 and pressure lead pipe 2 by casting, or the pressure lead pipe 2 and the process flange 1 are integrally formed by machining. It is worth noting that the pressure lead assembly integrally formed by casting or machining has good sealing performance, eliminates the poor sealing problem of the connection between the conventional process flange 1 and the pressure lead pipe 2, avoids the problem of leakage of the measured medium, ensures the accuracy of the pressure measurement result, and ensures safety. In addition, the integrally formed pressure lead assembly has high structural strength and can withstand high pressure or impact load, thereby improving the reliability and service life of the pressure transmitter using the pressure lead assembly. Furthermore, the integrally formed pressure lead assembly requires fewer manufacturing processes, reduces production time and cost, has high good product rate, and has low skill requirements for workers.

[0056] In some embodiments of the utility model, the material of the pressure lead assembly is metal, preferably any one of CF-3M, CF-8M, CF-3 or CF-8.

[0057] In some embodiments of the utility model, butt welding or socket welding is used to weld and fix the pressure lead pipe 2 and the measurement pipeline 7 containing the measured medium. Figure 8 As shown in the drawing, the other end of the measurement pipeline 7 can be connected to a mechanism containing the measured medium, such as a power plant storage tank, and the measurement pipeline 7 guides the measured medium to the pressure lead pipe 2, and then moves the measured medium to the pressure measuring diaphragm chamber 6 through the pressure lead pipe 2 and the process flange 1.

[0058] In some embodiments of the utility model, the material of the pressure lead assembly is high molecular material, preferably polytetrafluoroethylene PTFE or polyperfluoroethylene FEP. It is worth noting that polytetrafluoroethylene PTFE and polyperfluoroethylene FEP can withstand a temperature environment of more than 200 degrees Celsius, so the pressure lead assembly made of polytetrafluoroethylene PTFE or polyperfluoroethylene FEP can be used to measure the measured medium below 200 degrees Celsius, and thus has a wide range of application scenarios.

[0059] In some embodiments of the utility model, a reinforcing part is arranged at the connection between the process flange 1 and the pressure lead pipe 2, and the reinforcing part is arranged around the outer periphery of the pressure lead pipe 2 to enhance the structural strength of the connection.

[0060] Referring toFigures 1 to 5 In some embodiments of the utility model, the reinforcing part is a cone 4, and the tapered tip of the cone 4 faces the pressure lead pipe 2.

[0061] Referring to Figure 6 and Figure 7 In some embodiments of the utility model, the reinforcing part is a reinforcing rib 5, and the reinforcing rib 5 is arranged along the longitudinal direction of the pressure lead pipe 2.

[0062] In some embodiments of the utility model, the radial dimension of the reinforcing rib 5 gradually increases in the direction away from the pressure lead pipe 2, so as to match the dimensions of the pressure lead pipe 2 and the process flange 1, thereby enhancing the connection strength between the pressure lead pipe 2 and the process flange 1.

[0063] Referring to Figure 6 and Figure 7 It can be understood that the number of reinforcing ribs 5 can be two, three, four or five.

[0064] In some embodiments of the utility model, the length of the pressure lead pipe 2 is 50-200 mm, the outer diameter is 10-25 mm, and the inner diameter is 5-16 mm. Exemplarily, the length of the pressure lead pipe 2 can be 120 mm, 150 mm or 180 mm, the outer diameter can be 12 mm, 14 mm, 16 mm or 18 mm, and the inner diameter can be 6 mm or 7 mm. Obviously, the specific dimensions of the pressure lead pipe 2 can be customized according to different requirements.

[0065] Referring to Figure 8 In some embodiments of the utility model, the process flange 1 is adapted to be fixed with the pressure diaphragm capsule 6 by welding.

[0066] In some embodiments of the utility model, referring to Figure 8 A bolt hole 10 is arranged on the process flange 1, and the bolt hole 10 on the process flange 1 is adapted to be aligned with the bolt hole on the pressure diaphragm capsule 6 of the pressure transmitter, so as to insert a bolt and be fixed by threaded cooperation; the specific specifications and parameters of the bolt and the bolt hole 10 can be selected and adjusted according to actual requirements.

[0067] The second aspect

[0068] Referring to Figure 8 The utility model provides a pressure transmitter, the pressure transmitter includes: the pressure lead subassembly above-mentioned;Pressure diaphragm capsule 6 is installed on the process flange 1 of pressure lead subassembly and is linked with the pressure lead cavity 3 inside process flange 1.

[0069] Referring to Figure 8In some embodiments of the utility model, the quantity of the pressure leading assembly is two, the process flange 1 of the two pressure leading assemblies is connected with the positive and negative sides of the pressure measuring diaphragm box 6 respectively, so that the pressure leading cavity 3 in each pressure leading assembly is communicated with one pressure measuring diaphragm in the pressure measuring diaphragm box 6 respectively. It can be understood that the quantity of the pressure leading assembly in some other embodiments of the utility model is only one, and the specific selection and adjustment can be made according to the actual application needs.

[0070] Referring to Figure 8 In some embodiments of the utility model, the pressure transmitter further comprises a measuring pipeline 7, the measuring pipeline 7 is communicated with the end of the pressure leading pipe 2 away from the process flange 1, and the end of the measuring pipeline 7 away from the pressure leading pipe 2 can be communicated with a mechanism such as a power plant storage tank, which stores the medium to be measured, so as to guide the medium to be measured to the pressure leading pipe 2, and then to the pressure measuring diaphragm box 6 through the process flange 1 and the pressure leading cavity 3.

[0071] In some embodiments of the utility model, butt welding or socket welding is used to weld and fix the pressure leading pipe 2 and the measuring pipeline 7.

[0072] Referring to Figure 8 In some embodiments of the utility model, the pressure transmitter further comprises an electronic cabin 8 connected with the pressure measuring diaphragm box 6, and the electronic cabin 8 contains electronic components inside, which are used to convert the pressure signal received by the pressure measuring diaphragm box 6 into an electronic signal.

[0073] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims. In addition, the principle and implementation mode of the utility model are described in the specification by using specific examples, and the description of the above embodiments is only used to help understand the method and core idea of the utility model, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A pressure-sensing assembly for use in a pressure transmitter, characterized in that, The pressure-adhesive assembly includes: Process flange (1) for mounting the pressure diaphragm box (6) of the pressure transmitter; Pressure tapping tube (2) is used to apply pressure to the medium to be tested; The process flange (1) and the pressure tapping pipe (2) are integrally formed. The process flange (1) and the pressure tapping pipe (2) are provided with a pressure tapping cavity (3) that is connected inside. One end of the pressure tapping cavity (3) is adapted to be connected to the medium to be tested, and the other end is adapted to be connected to the inner cavity of the pressure measuring diaphragm.

2. The pressure-applying assembly according to claim 1, characterized in that, The process flange (1) and pressure pipe (2) are integrally formed by casting or machining.

3. The pressure-applying assembly according to claim 1, characterized in that, The pressure-applying component is made of metal. Alternatively, the pressure-applying component may be made of a polymer material.

4. The pressure-applying assembly according to claim 1, characterized in that, The connection between the process flange (1) and the pressure tap (2) is provided with a reinforcing part, which is arranged around the outer periphery of the pressure tap (2) to enhance the structural strength of the connection.

5. The pressure-applying assembly according to claim 4, characterized in that, The reinforcing part is a cone (4), and the cone-shaped tip of the cone (4) faces the pressure tube (2).

6. The pressure-applying assembly according to claim 4, characterized in that, The reinforcing part is a reinforcing rib (5), which is arranged longitudinally along the pressure tube (2).

7. The pressure-applying assembly according to claim 6, characterized in that, The radial dimension of the reinforcing rib (5) gradually increases along the direction away from the pressure tube (2).

8. The pressure-applying assembly according to any one of claims 1 to 7, characterized in that, The pressure tube (2) has a length of 50-200 mm, an outer diameter of 10-25 mm, and an inner diameter of 5-16 mm.

9. The pressure-applying assembly according to any one of claims 1 to 7, characterized in that, The process flange (1) is adapted to be fixed to the pressure measuring diaphragm by welding.

10. The pressure-applying assembly according to any one of claims 1 to 7, characterized in that, The process flange (1) is provided with bolt holes (10), which are adapted to be aligned with the bolt holes on the pressure diaphragm box of the pressure transmitter so as to insert bolts and then fix them with threaded engagement.

11. A pressure transmitter, characterized in that, The pressure transmitter includes: The pressure-applying assembly as described in any one of claims 1 to 10; The pressure testing diaphragm box (6) is installed on the process flange (1) of the pressure-feeding assembly and is connected to the pressure-feeding cavity (3) inside the process flange (1).

12. The pressure transmitter according to claim 11, characterized in that, The number of pressure-applying components is two, and the process flanges (1) of the two pressure-applying components are respectively connected to the positive and negative sides of the pressure-measuring diaphragm box (6), so that the pressure-applying cavity (3) in each pressure-applying component is respectively connected to a pressure-measuring diaphragm in the pressure-measuring diaphragm box (6).

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