Pressure transmitting assembly and pressure transmitter

Abstract

The utility model provides a pressure transmission assembly and a pressure transmitter, the pressure transmission assembly is used for conducting pressure in a pressure conduction path of the pressure transmitter, the pressure transmitter comprises a first diaphragm and a second diaphragm, the first diaphragm is communicated with a pressure source to be measured, the second diaphragm is communicated with a piezoelectric conversion assembly, and the piezoelectric conversion assembly is connected with the first diaphragm and the second diaphragm. The pressure transmitting assembly comprises a membrane suitable for being arranged between the first membrane and the second membrane in an attached mode. The base body is fixedly connected with the periphery of the diaphragm; the pressure transmitter comprises the above pressure transmission assembly. According to the utility model, the problem that when the pressure of the to-be-measured pressure source is too large, the pressure measuring diaphragm is broken through and damaged, and then the pressure transmitting diaphragm on the other side is further affected, polluted and even damaged is solved.

Description

Technical Field

[0001] This utility model relates to the field of pressure monitoring technology, specifically to a pressure transmission component and a pressure transmitter. Background Technology

[0002] In a pressure transmitter, when the pressure of the medium being measured is too high, the medium may damage the pressure-sensing diaphragm that is in direct contact with it, and further spread through the capillary tube connected to the pressure-sensing diaphragm. Under the impact of extreme pressure, the pressure-transmitting diaphragm on the other side of the capillary tube may be contaminated or even damaged under the impact of high pressure, which may lead to damage to the entire pressure transmitter.

[0003] Therefore, it is urgent to study how to solve the problem that when the pressure of the pressure source being measured is too high and breaks the pressure-sensing diaphragm, it can further affect, contaminate, or even damage the pressure-transmitting diaphragm on the other side. Utility Model Content

[0004] The purpose of this invention is to provide a pressure transmission component and a pressure transmitter to solve the problem that when the pressure source to be measured is too high and the pressure measuring diaphragm is broken and damaged, it can further affect, contaminate, or even damage the pressure transmission diaphragm on the other side.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pressure transmission component is provided for transmitting pressure in the pressure transmission path of a pressure transmitter, the pressure transmitter including a first diaphragm and a second diaphragm, the first diaphragm being connected to a pressure source to be measured, and the second diaphragm being connected to a piezoelectric conversion component.

[0007] The pressure transmission component includes:

[0008] A diaphragm, adapted to be fitted between the first diaphragm and the second diaphragm;

[0009] The substrate is fixedly connected to the periphery of the diaphragm.

[0010] In some embodiments of this utility model, the substrate is annular, and the periphery of the diaphragm is fixedly connected to the edge of the substrate.

[0011] In some embodiments of this utility model, the substrate is tubular, and the periphery of the diaphragm is fixedly connected to the flange on the inner wall surface of the substrate, and / or fixedly connected to the port of the substrate.

[0012] In some embodiments of this utility model, the pressure transmitting component has two diaphragms, one diaphragm is adapted to be attached to the first diaphragm, and the other diaphragm is adapted to be attached to the second diaphragm. The two diaphragms and the substrate together enclose a sealing cavity, and the sealing cavity contains a pressure transmitting medium.

[0013] In some embodiments of this invention, the pressure transmitter includes a nut seat and a threaded tube.

[0014] in,

[0015] The nut seat is provided with the first diaphragm, the threaded tube is provided with the second diaphragm, the pressure transmission component is adapted to be disposed in the nut seat and located between the first diaphragm and the second diaphragm, and the threaded tube is threadedly locked to the nut seat so that the pressure transmission component is fixed in the nut seat;

[0016] Alternatively, the threaded tube may contain the first diaphragm, the nut seat may contain the second diaphragm, the pressure transmission assembly may be disposed within the nut seat and located between the first and second diaphragms, and the threaded tube may be threadedly locked to the nut seat to fix the pressure transmission assembly in the nut seat.

[0017] In some embodiments of this utility model, the outer wall surface of the base is provided with threads so that the pressure transmission component is fixed to the nut seat via the outer wall surface of the base through threaded engagement.

[0018] In some embodiments of this utility model, the pressure transmitter includes two nut seats, and the first diaphragm and the second diaphragm are respectively disposed in one of the nut seats;

[0019] The outer wall surface of the base of the pressure transmission component is threaded, and one end of the pressure transmission component is adapted to be screwed into one of the nut seats, and the other end is adapted to be screwed into another nut seat.

[0020] In some embodiments of this utility model, the pressure transmitter includes two threaded tubes, and the first diaphragm and the second diaphragm are respectively disposed in one of the threaded tubes;

[0021] The inner wall of the base of the pressure transmission component is provided with threads, one end of the pressure transmission component is adapted to be screwed into one of the threaded tubes, and the other end is adapted to be screwed into another of the threaded tubes.

[0022] To achieve the above objectives, the present invention also provides the following technical solutions:

[0023] A pressure transmitter comprising:

[0024] The first diaphragm is adapted to be connected to the pressure source to be measured;

[0025] Second membrane;

[0026] The aforementioned pressure transmission component is disposed between the first diaphragm and the second diaphragm;

[0027] A piezoelectric conversion component, connected to the side of the second diaphragm away from the pressure transmission component, is used to convert the pressure transmitted sequentially through the first diaphragm, the pressure transmission component, and the second diaphragm into an electrical signal.

[0028] In some embodiments of this utility model, the pressure transmitter is used to measure the pressure inside the containment vessel of a nuclear power plant.

[0029] The pressure transmitter also includes a pressure-sensing diaphragm, which is connected to the first diaphragm via a capillary tube;

[0030] The pressure-measuring diaphragm is adapted to be installed inside the containment of a nuclear power plant to measure the internal pressure of the containment, while the first diaphragm, the second diaphragm, the piezoelectric conversion assembly, and the pressure transmission assembly are adapted to be installed outside the containment.

[0031] In some embodiments of this invention, the capillary is adapted to penetrate the containment structure;

[0032] Alternatively, the pressure transmitter includes a through tube that penetrates the containment, and a through cavity is provided inside the through tube. There are two capillaries, each connected to one end of the through cavity. One capillary is adapted to be inside the containment and connected to the pressure diaphragm, while the other capillary is located outside the containment and connected to the pressure transmission assembly.

[0033] Other applicable areas will become apparent from the description provided in this disclosure.

[0034] 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.

[0035] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0036] 1. This utility model provides a pressure transmission structure and a pressure transmitter that uses the pressure transmission structure, which can solve the problem that when the pressure source to be measured is too high and the pressure measuring diaphragm is broken and damaged, it can further affect, contaminate or even damage the pressure transmitting diaphragm on the other side.

[0037] 2. The product provided by this utility model can be easily disassembled and reused during subsequent inspection and maintenance. Attached Figure Description

[0038] 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.

[0039] Figure 1 A schematic diagram of the structure of the pressure transmission component provided in the first embodiment of this utility model;

[0040] Figure 2 A schematic diagram showing the assembly relationship between the pressure transmission component and the two diaphragms on the pressure transmitter provided in the second embodiment of this utility model;

[0041] Figure 3 A schematic diagram showing the assembly relationship between the pressure transmission component and the two diaphragms on the pressure transmitter provided in the third embodiment of this utility model.

[0042] Figure 4 A schematic diagram showing the assembly relationship between the pressure transmission component and the two diaphragms on the pressure transmitter provided in the fourth embodiment of this utility model.

[0043] Figure 5 A schematic diagram showing the assembly relationship between the pressure transmission component and the two diaphragms on the pressure transmitter provided in the fifth embodiment of this utility model;

[0044] Figure 6 This is a schematic diagram of the structure of a pressure transmitter installed on the containment vessel of a nuclear power plant, as provided in the sixth embodiment of this utility model.

[0045] Explanation of reference numerals in the attached figures

[0046] 1-Pressure transmission component; 11-Diaphragm; 12-Substrate;

[0047] 2-Piezoelectric conversion component;

[0048] 3 - Containment; 30 - Penetrating pipes of the containment;

[0049] 4- Penetrating the tube body;

[0050] 51-First diaphragm; 52-Second diaphragm; 53-Nut seat; 54-Threaded tube;

[0051] 6-Capillary tube; 7-Pressure-measuring diaphragm. Detailed Implementation

[0052] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model, and are not intended to limit this utility model.

[0053] Any specific numerical values ​​disclosed herein (including the endpoints of numerical ranges) are not limited to their exact values, but should be understood to also include values ​​close to the exact value, such as all possible values ​​within ±5% of the exact value. Furthermore, with respect to the disclosed numerical ranges, one or more new numerical ranges can be obtained by arbitrarily combining the endpoint values ​​of the range, the endpoint values ​​with specific point values ​​within the range, and the specific point values ​​themselves; these new numerical ranges should also be considered as specifically disclosed herein.

[0054] The terminology used in this disclosure is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” as used in this disclosure are intended to include the plural forms as well. The terms “comprising,” “including,” “containing,” and “having” are inclusive and thus describe the presence of said features, elements, compositions, steps, integers, operations, and / or components, but do not exclude the presence or inclusion of one or more other features, integers, steps, operations, elements, components, and / or sets thereof. Although the open-ended term “comprising” should be understood as a non-limiting term used to describe and claim the various embodiments described in this disclosure, in some aspects it may instead be understood as a more restrictive and limiting term, such as “consisting of” or “substantially consisting of.” Thus, for any given embodiment describing a composition, material, component, element, feature, integer, operation, and / or process step, this disclosure also particularly includes embodiments consisting of or substantially consisting of such compositions, materials, components, elements, features, integers, operations, and / or process steps. In the case of “consisting of…”, the alternative embodiments exclude any additional compositions, materials, components, elements, features, integers, operations and / or process steps. In the case of “essentially composed of…”, any additional compositions, materials, components, elements, features, integers, operations and / or process steps that substantially affect the essential and novel characteristics are excluded from such embodiments. However, any compositions, materials, components, elements, features, integers, operations and / or process steps that do not substantially affect the essential and novel characteristics may be included in the embodiments.

[0055] Any method steps, processes, and operations described in this disclosure should not be construed as necessarily requiring them to be performed in a particular order as discussed or shown, unless explicitly specified. It should also be understood that additional or alternative steps may be used unless otherwise stated.

[0056] In this application, except where expressly stated, any matters or issues not mentioned are directly applicable to those known in the art without any modification. Furthermore, any implementation described in this disclosure may be freely combined with one or more other implementations described in this disclosure, and the resulting technical solutions or concepts shall be considered part of the original disclosure or original record of this application, and should not be regarded as new content not disclosed or anticipated in this disclosure, unless those skilled in the art consider the combination to be clearly unreasonable.

[0057] Unless otherwise stated, the terms used herein have the same meaning as commonly understood by those skilled in the art, and if a term is defined herein and its definition differs from the common understanding in the art, the definition herein shall prevail.

[0058] First aspect

[0059] See Figures 1 to 6 This utility model provides a pressure transmission component 1 for transmitting pressure in the pressure transmission path of a pressure transmitter. The pressure transmitter includes a first diaphragm 51 and a second diaphragm 52. The first diaphragm 51 is connected to the pressure source to be measured, and the second diaphragm 52 is connected to a piezoelectric conversion component. The pressure transmission component 1 includes: a diaphragm 11 adapted to be fitted between the first diaphragm 51 and the second diaphragm 52; and a substrate 12 fixedly connected to the periphery of the diaphragm 11.

[0060] Specifically, when the first diaphragm 51, which is connected to the pressure source to be measured, is impacted by the pressure source or the medium to be measured due to an accident, the first diaphragm 51 may be damaged due to insufficient strength. This utility model provides a protective barrier through the pressure transmission component 1 mentioned above, so as to avoid the expansion of the damage range as much as possible. The pressure transmission component 1 can block the medium to be measured on the side away from the second diaphragm 52, thereby protecting the second diaphragm 52 from being affected or minimizing the impact.

[0061] See Figure 1 In some embodiments of this utility model, the substrate 12 is annular, and the periphery of the diaphragm 11 is fixedly connected to the edge of the substrate 12.

[0062] See Figure 2 and Figure 3 In some embodiments of this utility model, the substrate 12 is tubular, and the periphery of the diaphragm 11 is fixedly connected to a flange on the inner wall surface of the substrate 12. Specifically, the periphery of the diaphragm 11 and the flange on the inner wall surface of the substrate 12 can be fixed by welding, or other specific methods can be used for fixing.

[0063] See Figure 4 and Figure 5In some embodiments of this utility model, the substrate 12 is tubular, and the periphery of the diaphragm 11 is fixedly connected to the port of the substrate 12.

[0064] See Figure 3 and Figure 4 In some embodiments of this invention, the pressure transmitting assembly 1 has two diaphragms 11. One diaphragm 11 is adapted to be attached to the first diaphragm 51, and the other diaphragm 11 is adapted to be attached to the second diaphragm 52. The two diaphragms 11 and the substrate 12 together enclose a sealed cavity, which contains the pressure transmitting medium. It is worth noting that in some embodiments of this invention, by providing two diaphragms 11 in the pressure transmitting assembly 1, the protection against sudden pressure surges caused by accidents is further improved. Even if the diaphragm 11 closer to the first diaphragm 51 is destroyed by the medium to be tested, the remaining diaphragm 11 closer to the second diaphragm 52 can continue to function as an isolation medium to be tested and prevent contamination and the spread of damage.

[0065] See Figure 5 In some embodiments of this utility model, the pressure transmitter includes a nut seat 53 and a threaded tube 54. The nut seat 53 contains a first diaphragm 51, and the threaded tube 54 contains a second diaphragm 52. The pressure transmission assembly 1 is adapted to be disposed within the nut seat 53 and located between the first diaphragm 51 and the second diaphragm 52. The threaded tube 54 is threadedly locked to the nut seat 53, thereby fixing the pressure transmission assembly 1 within the nut seat 53. Clearly, the pressure transmission assembly 1 provided by this utility model can be easily disassembled and reused during subsequent inspection and maintenance.

[0066] In some embodiments of this utility model, the pressure transmitter includes a nut seat 53 and a threaded tube 54, wherein the threaded tube 54 houses the first diaphragm 51, and the nut seat 53 houses the second diaphragm 52. The pressure transmission component 1 is adapted to be disposed within the nut seat 53 and located between the first diaphragm 51 and the second diaphragm 52. The threaded tube 54 is threadedly locked to the nut seat 53 to fix the pressure transmission component 1 in the nut seat 53. Obviously, the pressure transmission component 1 provided by this utility model can be easily disassembled and reused during subsequent inspection and maintenance.

[0067] See Figure 5 In some embodiments of this utility model, the outer wall surface of the base 12 is provided with threads, so that the pressure transmission component 1 is fixed to the nut seat 53 via the threaded engagement of the outer wall surface of the base 12. Obviously, the pressure transmission component 1 provided by this utility model can be easily disassembled and reused during subsequent inspection and maintenance.

[0068] In some embodiments of this utility model, the pressure transmitter includes two nut seats 53, with the first diaphragm 51 and the second diaphragm 52 respectively disposed in one of the nut seats 53; the outer wall surface of the base 12 of the pressure transmission assembly 1 is provided with threads, one end of the pressure transmission assembly 1 is adapted to be screwed into one of the nut seats 53, and the other end is adapted to be screwed into the other nut seat 53. Obviously, the pressure transmission assembly 1 provided by this utility model can be easily disassembled and reused during subsequent inspection and maintenance.

[0069] See Figure 3 In some embodiments of this utility model, the pressure transmitter includes two threaded tubes 54, with the first diaphragm 51 and the second diaphragm 52 respectively disposed in one of the threaded tubes 54; the inner wall surface of the base 12 of the pressure transmission assembly 1 is provided with threads, one end of the pressure transmission assembly 1 is adapted to be screwed into one of the threaded tubes 54, and the other end is adapted to be screwed into the other threaded tube 54. Obviously, the pressure transmission assembly 1 provided by this utility model can be easily disassembled and reused during subsequent inspection and maintenance.

[0070] It is understandable that in the above-mentioned situations, the first diaphragm 51 and the second diaphragm 52 can be carried in connectors of different shapes, as long as the two connectors that respectively carry the first diaphragm 51 and the second diaphragm 52 can achieve a convenient, quick, reliable and efficient detachable connection effect.

[0071] See Figures 1 to 5 The structure labeled "6" in the five images is a capillary tube. Capillary tubes are used to contain pressure-conducting media to transmit pressure. The pressure-conducting media can be silicone oil or liquid alloy.

[0072] Second aspect

[0073] See Figures 1 to 6 This utility model provides a pressure transmitter, which includes: a first diaphragm 51 adapted to be connected to a pressure source to be measured; a second diaphragm 52; the aforementioned pressure transmission component 1 disposed between the first diaphragm 51 and the second diaphragm 52; and a piezoelectric conversion component 2 connected to the side of the second diaphragm 52 away from the pressure transmission component 1, for converting the pressure transmitted sequentially through the first diaphragm 51, the pressure transmission component 1, and the second diaphragm 52 into an electrical signal.

[0074] Specifically, in the event of an accident, the pressure of the pressure source under test increases sharply, which may impact and damage the first diaphragm 51. The pressure transmission component 1 provided by this invention can block the measured medium that has spread to the first diaphragm 51 under high pressure, preventing the measured medium from further spreading and contaminating or even destroying the second diaphragm 52. Therefore, the pressure transmission component 1 and the pressure transmitter using this pressure transmission component 1 provided by this invention can solve the problem that when the pressure of the pressure source under test is too high and breaks the pressure measuring diaphragm, it can further affect, contaminate, or even damage the pressure transmission diaphragm on the other side.

[0075] See Figure 6 In some embodiments of this utility model, the pressure transmitter is used to measure the internal pressure of the containment vessel 3 of the nuclear power plant; the pressure transmitter further includes a pressure-sensing diaphragm 7, which is connected to the first diaphragm 51 via a capillary tube 6; wherein, the pressure-sensing diaphragm 7 is adapted to be disposed inside the containment vessel 3 of the nuclear power plant to measure the internal pressure of the containment vessel 3, and the first diaphragm 51, the second diaphragm 52, the piezoelectric conversion component 2 and the pressure transmission component 1 are adapted to be disposed outside the containment vessel 3.

[0076] It is worth noting that, see also Figure 5 and Figure 6 In this embodiment, Figure 5 The tubular matrix 12 is housed in, for example Figure 5 and Figure 6 In the nut seat 53 shown, and the threaded tube 54 as Figure 5 and Figure 6 As shown, the tubular base 12 is screwed into the nut seat 53 and fixed by thread engagement, thereby fixing the tubular base 12 between the first diaphragm 51 and the second diaphragm 52, so that the diaphragm 11 on the two end faces of the tubular base 12 is respectively attached to the first diaphragm 51 and the second diaphragm 52; in some embodiments, threads can be added to the outer peripheral surface of the tubular base 12 based on the above, so that the tubular base 12 can be fixed by thread engagement with the nut seat 53, or the tubular base 12 can be made into a structure similar to the threaded tube 54.

[0077] Specifically, when an accident occurs inside the containment vessel 3 of a nuclear bomb station, the pressure of the pressure source to be measured increases sharply. This could potentially impact and damage the first diaphragm 51. The pressure transmission component 1 provided by this invention can block the measured medium that is spreading to the first diaphragm 51 under high pressure, preventing the measured medium from further spreading and contaminating or even destroying the second diaphragm 52. Therefore, the pressure transmission component 1 and the pressure transmitter using this component 1 provided by this invention can solve the problem of further impacting, contaminating, or even damaging the other pressure transmission diaphragm after the pressure of the pressure source to be measured is too high and breaks the pressure measuring diaphragm.

[0078] In some embodiments of this invention, the capillary 6 is adapted to penetrate the containment shell 3.

[0079] See Figure 6 In some embodiments of this utility model, the pressure transmitter includes a through tube 4 that penetrates the containment 3. The through tube 4 has a through cavity inside. There are two capillary tubes 6, which are respectively connected to one end of the through cavity. One capillary tube 6 is adapted to be inside the containment 3 and connected to the pressure measuring diaphragm 7, while the other capillary tube 6 is located outside the containment 3 and connected to the pressure transmission assembly 1.

[0080] See Figure 6 In some embodiments of this utility model, a through pipe 30 is provided on the containment 3, and the aforementioned through pipe 4 is disposed in the through pipe 30.

[0081] See Figure 6 The pressure-measuring diaphragm 7 is housed inside the containment vessel 3 of the nuclear power plant and is used to contact the medium being measured. The pressure of the medium being measured is applied to the pressure-measuring diaphragm 7 and is transmitted sequentially to the first diaphragm 51, the pressure transmission assembly 1 and the second diaphragm 52 via the capillary 6 and the pressure-conducting medium. The pressure is then transmitted to the piezoelectric conversion assembly 2 via another capillary 6 and the pressure-conducting medium inside it, so as to convert the pressure signal into an electrical signal.

[0082] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims. Furthermore, specific examples have been used in the specification to illustrate the principles and implementation methods of this utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model, and the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pressure transmission assembly (1) for transmitting pressure in the pressure transmission path of a pressure transmitter, the pressure transmitter comprising a first diaphragm (51) and a second diaphragm (52), the first diaphragm (51) being connected to a pressure source to be measured, and the second diaphragm (52) being connected to a piezoelectric conversion assembly, characterized in that, The pressure transmission component (1) includes: A diaphragm (11) is adapted to be attached between the first diaphragm (51) and the second diaphragm (52); The substrate (12) is fixedly connected to the periphery of the diaphragm (11).

2. The pressure transmission assembly (1) according to claim 1, characterized in that, The substrate (12) is annular, and the periphery of the diaphragm (11) is fixedly connected to the edge of the substrate (12).

3. The pressure transmission assembly (1) according to claim 1, characterized in that, The substrate (12) is tubular, and the periphery of the diaphragm (11) is fixedly connected to the flange on the inner wall surface of the substrate (12), and / or fixedly connected to the port of the substrate (12).

4. The pressure transmission assembly (1) according to claim 3, characterized in that, The pressure transmission component (1) has two diaphragms (11), one diaphragm (11) is adapted to be attached to the first diaphragm (51), and the other diaphragm (11) is adapted to be attached to the second diaphragm (52). The two diaphragms (11) together with the substrate (12) form a sealed cavity, which contains the pressure transmission medium.

5. The pressure transmission assembly (1) according to any one of claims 2 to 4, characterized in that, The pressure transmitter includes a nut seat (53) and a threaded tube (54). in, The nut seat (53) is provided with the first diaphragm (51), the threaded tube (54) is provided with the second diaphragm (52), the pressure transmission component (1) is adapted to be disposed in the nut seat (53) and located between the first diaphragm (51) and the second diaphragm (52), the threaded tube (54) is threadedly locked to the nut seat (53) so that the pressure transmission component (1) is fixed in the nut seat (53); Alternatively, the threaded tube (54) may contain the first diaphragm (51), the nut seat (53) may contain the second diaphragm (52), the pressure transmission assembly (1) may be disposed within the nut seat (53) and located between the first diaphragm (51) and the second diaphragm (52), and the threaded tube (54) may be threadedly locked to the nut seat (53) so that the pressure transmission assembly (1) is fixed in the nut seat (53).

6. The pressure transmission assembly (1) according to claim 5, characterized in that, The outer wall of the base (12) is threaded so that the pressure transmission assembly (1) is fixed to the nut seat (53) via the outer wall of the base (12).

7. The pressure transmission assembly (1) according to any one of claims 1 to 4, characterized in that, The pressure transmitter includes two nut seats (53), and the first diaphragm (51) and the second diaphragm (52) are respectively disposed in one of the nut seats (53); The outer wall of the base (12) of the pressure transmission assembly (1) is provided with threads. One end of the pressure transmission assembly (1) is adapted to be screwed into one of the nut seats (53), and the other end is adapted to be screwed into another nut seat (53).

8. The pressure transmission assembly (1) according to any one of claims 1 to 4, characterized in that, The pressure transmitter includes two threaded tubes (54), and the first diaphragm (51) and the second diaphragm (52) are respectively disposed in one of the threaded tubes (54); The inner wall of the base (12) of the pressure transmission assembly (1) is provided with threads. One end of the pressure transmission assembly (1) is adapted to be screwed into one of the threaded tubes (54), and the other end is adapted to be screwed into another threaded tube (54).

9. A pressure transmitter, characterized in that, The pressure transmitter includes: The first diaphragm (51) is adapted to be connected to the pressure source to be measured; Second diaphragm (52); The pressure transmission assembly (1) as described in any one of claims 1 to 8 is disposed between the first diaphragm (51) and the second diaphragm (52); The piezoelectric conversion component (2) is connected to the side of the second diaphragm (52) away from the pressure transmission component (1) and is used to convert the pressure transmitted sequentially through the first diaphragm (51), the pressure transmission component (1) and the second diaphragm (52) into an electrical signal.

10. The pressure transmitter according to claim 9, characterized in that, The pressure transmitter is used to measure the internal pressure of the containment vessel (3) of the nuclear power plant; The pressure transmitter also includes a pressure measuring diaphragm (7), which is connected to the first diaphragm (51) via a capillary tube (6); The pressure measuring diaphragm (7) is adapted to be installed inside the containment vessel (3) of the nuclear power plant to measure the internal pressure of the containment vessel (3), and the first diaphragm (51), the second diaphragm (52), the piezoelectric conversion assembly (2) and the pressure transmission assembly (1) are adapted to be installed outside the containment vessel (3).

11. The pressure transmitter according to claim 10, characterized in that, The capillary tube (6) is adapted to penetrate the containment vessel (3); Alternatively, the pressure transmitter may include a through tube (4) that penetrates the containment vessel (3), and a through cavity is provided inside the through tube (4). There are two capillaries (6), each of which is connected to one end of the through cavity. One capillary (6) is located inside the containment vessel (3) and is connected to the pressure measuring diaphragm (7), while the other capillary (6) is located outside the containment vessel (3) and is connected to the pressure transmission assembly (1).

Images