Pressure remote transmission device and pressure measuring equipment

Abstract

This application relates to a pressure remote transmission device and a pressure measuring device. The pressure remote transmission device includes: a first pressure transmission component connected to a container or pipeline containing the medium to be measured; and a second pressure transmission component connected to the first pressure transmission component, which further transmits the pressure to a remote target point. The first pressure transmission component includes a first pressure transmission unit based on a closed-loop pressure-conducting fluid system, and the second pressure transmission component includes a second pressure transmission unit based on a closed-loop pressure-conducting fluid system. The first and second pressure transmission components are connected to each other via a detachable connector. In this detachable connector, the first and second pressure transmission units automatically disconnect or establish a pressure transmission connection as the mechanical connection mechanism is disassembled or assembled. According to this invention, while achieving accurate pressure measurement and transmission, the inconvenience of maintenance, inspection, and calibration of previous remote pressure transmitters is solved.

Description

Technical Field

[0001] This invention relates to the field of pressure measurement, and more particularly to a pressure remote transmission device and a pressure measuring equipment. Background Technology

[0002] Pressure transmitters are frequently used in intelligent and digital pressure measurement equipment. A pressure transmitter generally refers to a pressure, absolute pressure, or differential pressure transmitter; it is an instrument that converts pressure parameters (e.g., acquired in the form of analog electrical signals) of media such as gases or liquids into standard electrical signals. To adapt to the measurement of special media such as high-temperature and corrosive media, remote pressure transmitters have emerged. As a derivative application of pressure transmitters, in addition to ordinary pressure transmitters, they also include remote pressure transmission components composed of pressure-sensing diaphragms, capillary tubes, and pressure-conducting fluids.

[0003] Pressure transmitters belong to the category of measuring instruments. To ensure the accuracy of measurements, they require periodic inspection and calibration. Generally, the pressure transmitter's sensing section can be connected to the container or pipeline containing the measured medium (such as a media tank) via a flange. When needed, calibration can be easily performed by simply disassembling the flange connection. However, in many real-world applications, remote pressure transmitters are frequently used to measure the pressure of high-risk or special media. If the conventional flange connection is still used between the media tank and the pressure transmitter's sensing section, media leakage is likely to occur during disassembly and calibration, potentially leading to serious safety hazards. For example, if molten sodium leaks and comes into contact with air, it can easily ignite and explode. To prevent media leakage and safety risks, the pressure transmitter's sensing section, along with its diaphragm, can be welded to the media tank. While this can prevent leakage of the measured medium at the pressure point to some extent, the periodic inspection and calibration of the remote pressure transmitter becomes a challenge due to this non-detachable connection. Summary of the Invention

[0004] The purpose of this invention is to provide a pressure remote transmission device to at least partially overcome the deficiencies of the prior art. This pressure remote transmission device is particularly suitable for pressure measuring equipment including pressure transmitters. While achieving accurate pressure measurement and transmission, it solves the problem of inconvenient maintenance, inspection, and calibration of previous remote pressure transmitters, and at the same time, it can retain and support the leak-proof design of the measured medium located at the pressure tapping point.

[0005] According to a first aspect of the present invention, a pressure remote transmission device is provided, comprising: a first pressure transmission component connected to a container or pipeline containing a medium to be measured, for receiving and transmitting the pressure of the medium to be measured; and a second pressure transmission component connected to the first pressure transmission component, for further transmitting the pressure transmitted by the first pressure transmission component to a remote transmission target point; wherein the first pressure transmission component includes a first pressure transmission unit based on a closed pressure-conducting fluid system, and the second pressure transmission component includes a second pressure transmission unit based on a closed pressure-conducting fluid system, the first pressure transmission component and the second pressure transmission component being connected to each other via a detachable connector, wherein the first pressure transmission unit and the second pressure transmission unit are automatically disconnected or a pressure transmission connection is established as the mechanical connection mechanism is disassembled or assembled.

[0006] According to the technical solution of the present invention, on the pressure measurement / transmission path, a detachable connector is provided between the pressure transmission components, independent of the test medium connection structure (usually including a leak-proof design) at the pressure tapping point. This detachable connector integrates the mechanical connection mechanism and the pressure transmission connection mechanism, enabling synchronous operation of the mechanical connection and the pressure transmission connection, thereby solving the proposed technical problem in a particularly advantageous manner.

[0007] According to one embodiment of the present invention, the detachable connector includes a first connector component on one side of a first pressure transmitting component and a second connector component on one side of a second pressure transmitting component. The first connector component and the second connector component can be detachably assembled together by mechanical components, thereby positioning and connecting the first pressure transmitting component and the second pressure transmitting component.

[0008] Preferably, the detachable joint is constructed as a flange joint, the first joint component of the first pressure transmission assembly is formed as a connecting flange, and the second joint component of the second pressure transmission assembly is formed as a remote transmission flange.

[0009] In this regard, it can be further specified that: the connecting flange and the remote transmission flange each have a central boss, and when the first pressure transmission component and the second pressure transmission component are positioned and connected, the top surfaces of the two central bosses are mated and fitted together.

[0010] More preferably, the central boss of the connecting flange and the central boss of the remote transmission flange have the same outer diameter. When connecting the first pressure transmission assembly and the second pressure transmission assembly, the two central bosses are aligned and positioned by the guide ring sleeve acting on the outer periphery of the central boss through the hoop.

[0011] According to one embodiment of the present invention, the first connector component is provided with a first pressure transmitting diaphragm belonging to the first pressure transmitting unit, and the second connector component is provided with a second pressure transmitting diaphragm belonging to the second pressure transmitting unit. When the first pressure transmitting component and the second pressure transmitting component are positioned and connected, the first pressure transmitting diaphragm and the second pressure transmitting diaphragm are in contact with each other, thereby enabling pressure transmission.

[0012] In this regard, according to one embodiment of the present invention, the first pressure transmitting assembly includes a pressure measuring diaphragm, a pressure measuring base supporting the pressure measuring diaphragm, a first capillary tube, and the first pressure transmitting diaphragm supported on the first connector component. A pressure measuring space is formed between the pressure measuring diaphragm and the pressure measuring base, and a first pressure transmitting space is formed between the first connector component and the first pressure transmitting diaphragm. The first capillary tube connects the pressure measuring space and the first pressure transmitting space, and together they form a sealed cavity. The sealed cavity is filled with a pressure-conducting fluid, thereby constituting the first pressure transmission unit.

[0013] Furthermore, according to an embodiment of the present invention, the first pressure transmitting assembly further includes a support tube that fixes the pressure measuring base to the first connector component, the first capillary extending through the pressure measuring base, the support tube and the first connector component, wherein the pressure measuring diaphragm on the pressure measuring base faces the inner cavity of the medium container or pipe to be measured, while the first pressure transmitting diaphragm on the first connector component faces away from the inner cavity of the medium container or pipe to be measured.

[0014] According to one embodiment of the present invention, the first pressure transmission assembly further includes an interface for conductive connection with a container or pipeline of the medium to be tested, and the pressure testing base is fixedly installed on the interface.

[0015] Here, the interface component can be constructed as a pipe section, and the pressure measuring base is at least partially inserted into the pipe section and sealed and welded to the pipe section. That is to say, the pressure measuring part together with its pressure measuring diaphragm can still be connected to the container or pipeline (such as a medium tank) to be measured by welding. Thus, the effect of preventing medium leakage can be achieved with a simple and easy measure, provided that the joint structure at the pressure tapping point is stable and reliable.

[0016] According to one embodiment of the present invention, the second pressure transmitting assembly includes a second pressure transmitting diaphragm and a second capillary tube supported on the second connector component, wherein a second pressure transmitting space is formed between the second connector component and the second pressure transmitting diaphragm, the second capillary tube connects the second pressure transmitting space and a measuring chamber located at a remote target point, and together form a sealed cavity, the sealed cavity being filled with a pressure-conducting fluid, thereby constituting the second pressure transmission unit.

[0017] Here, it is preferable that the second pressure-transmitting diaphragm on the second connector component is aligned with the first pressure-transmitting diaphragm on the first connector component, and that the second capillary extends through the second connector component to the measuring chamber.

[0018] Advantageously, the overall elastic properties (deformation properties) of the assembly formed when the first and second pressure-transmitting diaphragms are tightly bonded are consistent with, or essentially the same as, the elastic properties (deformation properties) of the pressure-measuring diaphragm, thereby enabling precise pressure transmission.

[0019] According to one embodiment of the present invention, the pressure measuring diaphragm, the first pressure transmitting diaphragm, and the second pressure transmitting diaphragm are all circular metal sheets. Preferably, the diameter of the first pressure transmitting diaphragm is larger than the diameter of the pressure measuring diaphragm, and the diameter of the second pressure transmitting diaphragm is equal to the diameter of the first pressure transmitting diaphragm.

[0020] According to one embodiment of the present invention, the sum of the thickness of the first pressure-transmitting diaphragm and the thickness of the second pressure-transmitting diaphragm is equal to the thickness of the pressure-measuring diaphragm.

[0021] According to one embodiment of the present invention, both the first pressure-transmitting diaphragm and the second pressure-transmitting diaphragm are corrugated diaphragms with annular corrugations. When the first pressure-transmitting component and the second pressure-transmitting component are positioned and connected, the annular corrugations of the two corrugated diaphragms are interlocked with each other, so that the first pressure-transmitting diaphragm and the second pressure-transmitting diaphragm are tightly attached.

[0022] According to one embodiment of the present invention, the pressure measuring diaphragm is a corrugated diaphragm with annular corrugations, and the pressure measuring base is provided with the same annular corrugations on the end face on which the pressure measuring diaphragm is placed.

[0023] According to one embodiment of the present invention, the first pressure-transmitting diaphragm is a corrugated diaphragm with annular corrugations, and the first connector component has the same annular corrugations on the end face on which the first pressure-transmitting diaphragm is disposed.

[0024] According to one embodiment of the present invention, the second pressure-transmitting diaphragm is a corrugated diaphragm with annular corrugations, and the second connector component has the same annular corrugations on the end face on which the second pressure diaphragm is placed.

[0025] According to a second aspect of the present invention, a pressure measuring device is provided, comprising the aforementioned pressure remote transmission device and a pressure transmitter connected to the pressure remote transmission device, wherein the pressure transmitter receives and measures the pressure transmitted by the pressure remote transmission device at the remote transmission target point. The pressure transmitter can convert the pressure signal into an electrical signal output. Thus, according to the present invention, a detachable remote pressure transmitter can be constructed, which is particularly suitable for remote measurement of special high-risk media such as liquid sodium.

[0026] It goes without saying that the features and advantages of the pressure remote transmission device according to the first aspect of the present invention are also applicable to the pressure measuring device of the second aspect of the present invention. Attached Figure Description

[0027] Exemplary embodiments of the invention are illustrated in the accompanying drawings. The embodiments and drawings disclosed herein should be considered illustrative rather than restrictive. It is also worth noting that, for clarity, some structural details in the drawings are not drawn to scale.

[0028] Figure 1 This is a schematic diagram of the first pressure transmission component of a pressure remote transmission device according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the second pressure transmission component of a pressure remote transmission device according to one embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of a pressure measuring device according to an embodiment of the present invention, including a first pressure transmitting component and a second pressure transmitting component connected to each other. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will now be described with reference to the accompanying drawings. Obviously, the described embodiments only relate to a portion of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the disclosed embodiments of the present invention without creative effort are within the scope of protection of this application.

[0032] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not specifically listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses. Those skilled in the art will understand that in the description of the specification and claims of this application, certain terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device, mechanism, structure, or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the invention.

[0033] The reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this term in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art and may be interpreted in the context of their application in the relevant technical description.

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] Figure 1 , Figure 2 and Figure 3 A schematic diagram of the pressure remote transmission device and pressure measuring equipment of the present invention is shown.

[0037] This invention provides a pressure remote transmission device, comprising: a first pressure transmission component 100 connected to a container or pipeline (such as a medium tank) for receiving and transmitting the pressure of the medium; and a second pressure transmission component 200 connected to the first pressure transmission component and further transmitting the pressure transmitted by the first pressure transmission component to a remote transmission target point; the first pressure transmission component 100 includes a first pressure transmission unit based on a closed pressure-conducting fluid system, and the second pressure transmission component 200 includes a second pressure transmission unit based on a closed pressure-conducting fluid system; the first pressure transmission component 100 and the second pressure transmission component 200 are connected to each other via a detachable connector, wherein the first pressure transmission unit and the second pressure transmission unit are automatically disconnected or connected via the disassembly or assembly of the mechanical connection mechanism.

[0038] In this way, true synchronization between the mechanical connection and the pressure transmission connection between the pressure transmission components can be achieved. Moreover, during the separation and connection of the pressure transmission connection, no other operation is required except for the disassembly and assembly of the mechanical connecting parts. This means that when the first pressure transmission component and the second pressure transmission component (the mechanical structural elements) are connected and in place, the pressure transmission connection between the first pressure transmission component and the second pressure transmission component (the pressure transmission unit) is automatically established simultaneously, thus enabling pressure transmission. When the first pressure transmission component and the second pressure transmission component (the mechanical structural elements) are separated, the pressure transmission connection between the first pressure transmission component and the second pressure transmission component (the pressure transmission unit) is automatically disconnected.

[0039] Within the scope of this invention, the number of pressure transmission components is not limited in principle. In this regard, for example, it can be envisioned that one or more pressure transmission components with similar structures may be added, particularly in the pressure transmission path from the second pressure transmission component to the target point, with mechanical and pressure transmission connections established between the pressure transmission components through detachable joints of the same design, thereby enabling (multiple) relay pressure transmission measurements.

[0040] Figure 1 This is a schematic diagram of the first pressure transmission component 100 of a pressure remote transmission device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the second pressure transmission component 200 of a pressure remote transmission device according to one embodiment of the present invention; Figure 3 This is a schematic diagram of a pressure measuring device according to an embodiment of the present invention, including a first pressure transmitting assembly and a second pressure transmitting assembly connected to each other. As shown, the detachable connector includes a first connector component on one side of the first pressure transmitting assembly 100 and a second connector component on one side of the second pressure transmitting assembly 200. The first connector component and the second connector component can be detachably assembled together by mechanical components, thereby positioning the first pressure transmitting assembly 100 and the second pressure transmitting assembly 200 together. Here, the detachable connector can preferably be constructed as a flange connector, and the first connector component of the first pressure transmitting assembly 100 is formed as a connecting flange 108, as shown in the figure. Figure 1 As shown, the second connector component of the second pressure transmission assembly 200 is formed as a remote flange 202, just as Figure 2 As shown.

[0041] See Figure 2 and Figure 3 The connecting flange 108 and the remote transmission flange 202 each have a central boss. When the first pressure transmitting assembly 100 and the second pressure transmitting assembly 200 are positioned and connected, the top surfaces of the two central bosses abut against each other. Preferably, the central bosses of the connecting flange 108 and the remote transmission flange 202 have the same outer diameter. When connecting the first pressure transmitting assembly 100 and the second pressure transmitting assembly 200, the guide ring 301 acting on the outer periphery of the central boss aligns and positions the two central bosses. After the two central bosses are aligned and positioned by the guide ring 301, they can be fastened together by bolts 401, as shown in the image. Figure 3 As shown. The specific structure and configuration dimensions of such directional guidance mechanisms (especially those involving guide rings) can be obtained by those skilled in the art through appropriate design and calculation.

[0042] According to one embodiment of the present invention, a first pressure-transmitting diaphragm 107 belonging to the first pressure transmission unit is disposed on the first connector component (see [reference]). Figure 1 The second connector component is provided with a second pressure transmitting diaphragm 201 belonging to the second pressure transmitting unit (see...). Figure 2 When the first pressure transmitting component 100 and the second pressure transmitting component 200 are positioned and connected, the first pressure transmitting diaphragm 107 and the second pressure transmitting diaphragm 201 are in contact with each other, thereby enabling pressure transmission (see...). Figure 3 During the disassembly and assembly of the pressure measuring device (or remote pressure transmitter), that is, when disassembling or assembling the mechanical connection mechanism of the detachable connector, the first pressure transmitting diaphragm 107 and the second pressure transmitting diaphragm 201 can also be accurately positioned based on the setting of the guide ring sleeve 301.

[0043] like Figure 1 As shown, according to an embodiment of the present invention, the first pressure transmitting assembly 100 includes a pressure-measuring diaphragm 102, a pressure-measuring base 103 supporting the pressure-measuring diaphragm, a first capillary tube 106, and the first pressure transmitting diaphragm 107 supported on the first connector component. A pressure-measuring space is formed between the pressure-measuring diaphragm and the pressure-measuring base, and a first pressure transmitting space is formed between the first connector component and the first pressure transmitting diaphragm 107. The first capillary tube 106 connects the pressure-measuring space and the first pressure transmitting space, forming a sealed cavity. The sealed cavity is filled with a pressure-conducting fluid 104, thereby constituting the first pressure transmission unit. The pressure-conducting fluid 104 is an incompressible liquid, which can conventionally be high-temperature silicone oil or other high-temperature metallic liquids.

[0044] like Figure 1 As shown, according to an embodiment of the present invention, the first pressure transmitting assembly 100 further includes a support tube 105 that fixes the pressure measuring base 103 to the first connector component. The first capillary tube 106 extends through the pressure measuring base 103, the support tube 105 and the first connector component, wherein the pressure measuring diaphragm 102 on the pressure measuring base 103 faces the inner cavity of the medium container or pipe to be measured, while the first pressure transmitting diaphragm 107 on the first connector component faces away from the inner cavity of the medium container or pipe to be measured.

[0045] like Figure 1 As shown, according to one embodiment of the present invention, the first pressure transmitting assembly 100 further includes an interface for conductive connection with a container or pipeline containing the medium to be tested, and the pressure measuring base 103 is fixedly mounted on the interface. Here, the interface can be constructed as a pipe segment 101, and the pressure measuring base 103 is at least partially inserted into the pipe segment and sealed and welded to it. Thus, a simple and easy method can be used to achieve media leakage prevention while ensuring a stable and reliable connection structure at the pressure tapping point.

[0046] like Figure 2As shown, according to one embodiment of the present invention, the second pressure transmitting assembly 200 includes a second pressure transmitting diaphragm 201 and a second capillary tube 203 supported on the second connector component. A second pressure transmitting space is formed between the second connector component and the second pressure transmitting diaphragm. The second capillary tube 203 connects the second pressure transmitting space and a measuring chamber located at a remote target point (where the transmitted pressure acts directly or indirectly on a sensor, such as a pressure-sensitive element), together forming a sealed cavity filled with a pressure-conducting fluid 204, thereby constituting the second pressure transmission unit. Here, the pressure-conducting fluid 204 can be silicone oil, which is capable of transmitting pressure effectively.

[0047] like Figure 2 and Figure 3 As shown, according to one embodiment of the present invention, the second pressure-transmitting diaphragm 201 on the second connector component faces the first pressure-transmitting diaphragm 107 on the first connector component, and the second capillary 203 extends through the second connector component to the measuring chamber. To increase strength and aesthetics, a metal armored sleeve can typically be added to the outside of the capillary. This metal armored sleeve, along with the capillary, is preferably flexible and bendable for easy on-site installation and arrangement.

[0048] Advantageously, the overall elastic characteristics (deformation characteristics) of the assembly formed when the first pressure-transmitting diaphragm 107 and the second pressure-transmitting diaphragm 201 are tightly bonded are consistent with, or essentially the same as, the elastic characteristics (deformation characteristics) of the pressure-measuring diaphragm 102, thus enabling accurate pressure transmission without the need for additional processing such as conversion.

[0049] Preferably, according to an embodiment of the present invention, the pressure-measuring diaphragm 102, the first pressure-transmitting diaphragm 107, and the second pressure-transmitting diaphragm 201 are all circular metal sheets. Preferably, the diameter of the first pressure-transmitting diaphragm 107 is larger than the diameter of the pressure-measuring diaphragm 102, and the diameter of the second pressure-transmitting diaphragm 201 is equal to the diameter of the first pressure-transmitting diaphragm 107.

[0050] According to one embodiment of the present invention, the sum of the thickness of the first pressure-transmitting diaphragm 107 and the thickness of the second pressure-transmitting diaphragm 201 can be set to be equal to the thickness of the pressure-measuring diaphragm 102.

[0051] Within the scope of this invention, each pressure-transmitting diaphragm and pressure-measuring diaphragm can be a flat diaphragm or a corrugated diaphragm, particularly a corrugated diaphragm as described below.

[0052] Preferably, according to an embodiment of the present invention, both the first pressure-transmitting diaphragm 107 and the second pressure-transmitting diaphragm 201 are corrugated diaphragms with annular corrugations. When the first pressure-transmitting assembly 100 and the second pressure-transmitting assembly 200 are positioned and connected, the annular corrugations of the two diaphragms interlock, causing the first pressure-transmitting diaphragm and the second pressure-transmitting diaphragm to fit tightly together. That is, the annular corrugations of the first and second pressure-transmitting diaphragms match, and both have the same shape and size. In the positioned and connected state, the corrugations interlock, ensuring close contact between the two diaphragms without gaps, so as to accurately transmit pressure without error or loss.

[0053] Preferably, according to an embodiment of the present invention, the pressure-measuring diaphragm 102 is a corrugated diaphragm with annular corrugations, and the pressure-measuring base 103 has the same annular corrugations on its end face where the pressure-measuring diaphragm is placed. That is, the annular corrugations of the pressure-measuring diaphragm match the annular corrugations on the end face of the pressure-measuring base, and the two have the same shape and size.

[0054] Preferably, according to an embodiment of the present invention, the first pressure-transmitting diaphragm 107 is a corrugated diaphragm with annular corrugations, and the first connector component has the same annular corrugations on its end face where the first pressure-transmitting diaphragm is placed. That is, the annular corrugations of the first pressure-transmitting diaphragm match the annular corrugations on the end face of the first connector component, and the two have the same shape and size.

[0055] Preferably, according to an embodiment of the present invention, the second pressure-transmitting diaphragm 201 is a corrugated diaphragm with annular corrugations, and the second connector component has the same annular corrugations on its end face where the second pressure diaphragm is placed. That is, the annular corrugations of the second pressure-transmitting diaphragm match the annular corrugations on the end face of the second connector component, and the two have the same shape and size.

[0056] The present invention also provides a pressure measuring device 300, which includes the aforementioned pressure remote transmission device and a pressure transmitter 205 connected to the pressure remote transmission device. The pressure transmitter receives and measures the pressure transmitted by the pressure remote transmission device at the remote transmission target point. The pressure transmitter 205 is only schematically represented by an ellipse in the accompanying drawings. In principle, it is a conventional design that can convert the pressure signal into an electrical signal output. Thus, according to the present invention, a detachable remote pressure transmitter can be constructed, which is particularly suitable for remote measurement of special high-risk media such as liquid sodium.

[0057] Here, based on a specific and preferred embodiment of the present invention, the working principle and structural configuration of the pressure measuring device, or remote pressure transmitter, are summarized as follows:

[0058] The pressure remote transmission device mainly consists of a first pressure transmission component 100 and a second pressure transmission component 200. The first pressure transmission component 100 is welded to the container or pipeline containing the medium to be measured, such as a medium tank, through an interface formed by pipe section 101. The pressure transmitter 205 is connected to the medium tank via the first pressure transmission component 100 and the second pressure transmission component 200 to perform relay pressure measurement.

[0059] like Figure 1 As shown, the first pressure transmitting assembly 100 includes: a pipe section 101, a pressure-sensing diaphragm 102, a pressure-sensing base 103, a support pipe 105, a first capillary tube 106, a connecting flange 108, a first pressure-transmitting diaphragm 107, and a pressure-conducting fluid 104. One end of the pipe section 101 is connected to the pressure-sensing base 103, and the other end can be welded to the tank body. The pressure-sensing diaphragm 102 is a circular metal sheet with a thickness of 0.1 mm, and its surface is provided with annular corrugations to increase elastic deformation. The pressure-sensing base 103 mainly serves as a carrier for the pressure-sensing diaphragm 102. One end face of the base is provided with annular corrugations, which connect to the pressure-sensing diaphragm 102 and match the annular corrugations of the pressure-sensing diaphragm. The other end face of the base is connected to the first capillary tube 106. The connecting flange 108 is a disc-shaped flange with four bolt holes in its peripheral area. One end face connects to the first capillary tube 106, and the other end face has a corrugated surface on which the first pressure-transmitting diaphragm 107 is connected. A support tube 105 connects the connecting flange 108 and the pressure-measuring base 103, located outside the first capillary tube 106 for support and fixation. The first pressure-transmitting diaphragm 107 is a circular metal sheet with a thickness of 0.05 mm and annular corrugations on its surface to increase elastic deformation. The diameter of the first pressure-transmitting diaphragm 107 is slightly larger than that of the pressure-measuring diaphragm 102. The connection of the pressure-measuring diaphragm 102, pressure-measuring base 103, first capillary tube 106, connecting flange 108, and first pressure-transmitting diaphragm 107 forms a sealed cavity. A pressure-conducting fluid 104 is injected into the sealed cavity to transmit pressure. The pressure-conducting fluid 104 is an incompressible liquid, such as high-temperature silicone oil or other high-temperature metal liquid.

[0060] like Figure 2As shown, the second pressure transmitting assembly 200 mainly includes: a remote flange 202, a second pressure transmitting diaphragm 201, a second capillary tube 203, and a filling fluid or pressure-conducting fluid 204, which is connected to the pressure transmitter 205. The remote flange 202 is a disc-shaped flange with four bolt holes in its peripheral area. This remote flange is similar to the connecting flange 108 of the first pressure transmitting assembly 100, and one end face of it is provided with a corrugated surface, on which the second pressure transmitting diaphragm 201 is connected. The second pressure transmitting diaphragm 201 is a circular metal sheet with a thickness of 0.05 mm, and its surface is provided with annular corrugations. The concave and convex structure of the annular corrugations of the second pressure transmitting diaphragm 201 is opposite to the concave and convex structure of the first pressure transmitting diaphragm 107 and interlocks with each other. Therefore, after the first pressure transmitting diaphragm 107 and the second pressure transmitting diaphragm 201 are attached, their surfaces can be in complete contact without gaps. The second capillary tube 203 can be constructed as a flexible metal tube, connecting the remote flange 202 and the pressure transmitter 205. To increase strength and aesthetics, a metal armored sleeve can be fitted over the capillary tube. The pressure transmitter mentioned is a conventional pressure transmitter; in this article, it refers generally to pressure, absolute pressure, and differential pressure transmitters. The filling fluid, or pressure-conducting fluid 204, is silicone oil, which can transmit pressure.

[0061] Thus, a detachable remote pressure transmitter can be constructed, wherein the first pressure-transmitting diaphragm 107 at the diaphragm end of the connecting flange 108 of the first pressure-transmitting assembly 100 is connected to the second pressure-transmitting diaphragm 210 at the diaphragm end of the remote flange. Since the first pressure-transmitting diaphragm 107 and the second pressure-transmitting diaphragm 201 are of the same size, their concave and convex structures point in opposite directions and interlock, allowing for tight contact. To further ensure accurate positional contact between the first pressure-transmitting diaphragm 107 and the second pressure-transmitting diaphragm 201, guide rings 300 are provided around the diaphragm ends of the connecting flange 108 and the remote flange 202 to ensure proper insertion alignment. Here, the connecting flange 108 and the remote flange 202 are fastened together with bolts 401 to ensure tight positional contact between the first pressure-transmitting diaphragm 107 and the second pressure-transmitting diaphragm 201.

[0062] like Figure 3As shown, in the formed pressure measuring device 300, or remote pressure transmitter, the first pressure transmitting component 100 and the second pressure transmitting component 200 are connected by a flange. At this time, the first pressure transmitting diaphragm 107 and the second pressure transmitting diaphragm 201 are in close contact to achieve pressure transmission. Specifically, after the pressure-sensing diaphragm 102 of the first pressure transmitting component 100 senses the pressure of the medium, the pressure is transmitted to the first pressure transmitting diaphragm 107 through the pressure-conducting fluid 104 inside the first capillary tube 106, causing the first pressure transmitting diaphragm 107 to undergo slight deformation. Since the first pressure transmitting diaphragm 107 and the second pressure transmitting diaphragm 201 are in close contact, the pressure can also be transmitted to the second pressure transmitting diaphragm 201 under the action of deformation force. The second pressure transmitting diaphragm 201 further transmits the pressure signal to the pressure transmitter 205 through the silicone oil inside the second capillary tube 203, and the pressure transmitter 205 converts the pressure signal into an electrical signal output.

[0063] Here, pipe section 101 is welded to the medium tank and fixed as a whole. After the first pressure transmitting assembly 100 and the second pressure transmitting assembly 200 are separated at the detachable joint, the pressure of the medium in the tank acts on the pressure-sensing diaphragm 102. The pressure-sensing diaphragm 102 is under pressure and undergoes a slight displacement. Then, through the pressure-sensing base 103 and the pressure-conducting fluid 104 inside the first capillary tube 106, the pressure is transmitted to the first pressure-sensing diaphragm 107. The first pressure-sensing diaphragm 107 also undergoes a slight movement under the force of the pressure-conducting fluid. During this process, the pressure-conducting fluid at one end of the pressure-sensing diaphragm 102 flows to the first pressure-sensing diaphragm 107, causing the first pressure-sensing diaphragm 107 to undergo a convex deformation. When all the pressure-conducting fluid at one end of the pressure-sensing diaphragm 102 has flowed to one end of the first pressure-sensing diaphragm 107, the pressure-sensing diaphragm 102 will adhere to the end face of the pressure-sensing base 103, thereby stopping the pressure transmission. This prevents damage to the pressure-sensing diaphragm 102 or the first pressure-transmitting diaphragm 107. Firstly, after the second pressure-transmitting assembly 200 and the pressure transmitter 205 are disassembled, the pressure-conducting fluid at one end of the pressure-sensing diaphragm 102 flows to one end of the first pressure-transmitting diaphragm 107 under the pressure of the tank medium. The pressure-sensing diaphragm then adheres to the surface of the pressure-sensing base and is not damaged. This also forms an overload protection structure, providing safety protection and preventing the tank medium from leaking out. Secondly, because the diameter of the pressure-sensing diaphragm 102 is smaller than the diameter of the first pressure-transmitting diaphragm 107 (i.e., the diameter of the pressure-conducting fluid cavity at one end of the pressure-sensing diaphragm 102 is smaller than the diameter of the pressure-conducting fluid cavity at one end of the first pressure-transmitting diaphragm 107), the displacement deformation of the first pressure-transmitting diaphragm is less than the deformation displacement of the pressure-sensing diaphragm when the pressure-conducting fluid moves. In other words, the convex deformation of the first pressure-transmitting diaphragm 107 is very small and will not be damaged. Therefore, even after the second pressure transmission assembly 200 and the pressure transmitter 205 are disassembled, the pressure of the medium in the tank will not cause damage to the first pressure transmission assembly 100 (especially its pressure sensing / transmission diaphragm). Thus, the pressure transmitter can be periodically calibrated and verified on the side of the second pressure transmission assembly 200.

[0064] It is worth mentioning that at the connection between the first pressure transmitting assembly 100 and the second pressure transmitting assembly 200, the guide ring 301 ensures precise alignment of the first pressure transmitting diaphragm 107 and the second pressure transmitting diaphragm 201. The bolt tightening tension in the flange perimeter area ensures a tight connection between the first pressure transmitting diaphragm 107 and the second pressure transmitting diaphragm 201; furthermore, as the tightening tension increases, the first pressure transmitting diaphragm 107 and the pressure measuring diaphragm 102, under stress, can eliminate diaphragm misalignment and restore them to their original shape.

[0065] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A pressure remote transmission device, comprising: A first pressure transmission component (100) is connected to a container or pipeline containing the medium to be measured in order to receive and transmit the pressure of the medium to be measured. The second pressure transmission component (200) is connected to the first pressure transmission component and further transmits the pressure transmitted by the first pressure transmission component to the remote target point; The first pressure transmission component (100) includes a first pressure transmission unit based on a closed pressure-conducting fluid system, and the second pressure transmission component (200) includes a second pressure transmission unit based on a closed pressure-conducting fluid system. The first pressure transmission component (100) and the second pressure transmission component (200) are connected to each other through a detachable connector. In the detachable connector, the first pressure transmission unit and the second pressure transmission unit are automatically disconnected or a pressure transmission connection is established as the mechanical connection mechanism is disassembled or assembled. The detachable connector includes a first connector component on one side of the first pressure transmission assembly (100) and a second connector component on one side of the second pressure transmission assembly (200). The first connector component is provided with a first pressure transmitting diaphragm (107) belonging to the first pressure transmitting unit, and the second connector component is provided with a second pressure transmitting diaphragm (201) belonging to the second pressure transmitting unit. When the first pressure transmitting component (100) and the second pressure transmitting component (200) are positioned and connected, the first pressure transmitting diaphragm (107) and the second pressure transmitting diaphragm (201) are attached to each other, thereby enabling pressure transmission.

2. The pressure remote transmission device according to claim 1, characterized in that, The first connector component and the second connector component can be detachably assembled together by mechanical components, thereby positioning and connecting the first pressure transmission assembly (100) and the second pressure transmission assembly (200).

3. The pressure remote transmission device according to claim 2, characterized in that, The detachable joint is constructed as a flange joint, the first joint component of the first pressure transmission assembly (100) is formed as a connecting flange (108), and the second joint component of the second pressure transmission assembly (200) is formed as a remote transmission flange (202).

4. The pressure remote transmission device according to claim 3, characterized in that, The connecting flange (108) and the remote transmission flange (202) each have a central boss. When the first pressure transmission assembly (100) and the second pressure transmission assembly (200) are positioned and connected, the top surfaces of the two central bosses are abutted and fitted together.

5. The pressure remote transmission device according to claim 4, characterized in that, The central boss of the connecting flange (108) and the central boss of the remote transmission flange (202) have the same outer diameter. When connecting the first pressure transmission assembly (100) and the second pressure transmission assembly (200), the two central bosses are aligned and positioned by the guide ring (301) acting on the outer periphery of the central boss through the hoop.

6. The pressure remote transmission device according to claim 1, characterized in that, The first pressure transmission assembly (100) includes a pressure measuring diaphragm (102), a pressure measuring base (103) supporting the pressure measuring diaphragm, a first capillary tube (106), and the first pressure transmission diaphragm (107) supported on the first connector component. A pressure measuring space is formed between the pressure measuring diaphragm and the pressure measuring base, and a first pressure transmission space is formed between the first connector component and the first pressure transmission diaphragm. The first capillary tube connects the pressure measuring space and the first pressure transmission space, and together they form a sealed cavity. The sealed cavity is filled with a pressure-conducting fluid (104), thereby constituting the first pressure transmission unit.

7. The pressure remote transmission device according to claim 6, characterized in that, The first pressure transmitting assembly (100) further includes a support tube (105) that fixes the pressure measuring base (103) to the first connector component. The first capillary tube (106) extends through the pressure measuring base, the support tube and the first connector component, wherein the pressure measuring diaphragm (102) on the pressure measuring base faces the inner cavity of the medium container or pipe to be tested, and the first pressure transmitting diaphragm (107) on the first connector component faces away from the inner cavity of the medium container or pipe to be tested.

8. The pressure remote transmission device according to claim 6, characterized in that, The first pressure transmission assembly (100) further includes an interface for conductive connection with the container or pipeline of the medium to be tested, and the pressure measuring base (103) is fixedly installed on the interface.

9. The pressure remote transmission device according to claim 8, characterized in that, The interface component is constructed as a pipe segment (101), and the pressure measuring base (103) is at least partially inserted into the pipe segment and sealed and welded to the pipe segment.

10. The pressure remote transmission device according to claim 1, characterized in that, The second pressure transmission assembly (200) includes a second pressure transmission diaphragm (201) and a second capillary (203) supported on the second connector component. A second pressure transmission space is formed between the second connector component and the second pressure transmission diaphragm. The second capillary connects the second pressure transmission space and the measuring chamber located at the remote target point, and together they form a sealed cavity. The sealed cavity is filled with pressure-conducting fluid (204), thereby constituting the second pressure transmission unit.

11. The pressure remote transmission device according to claim 10, characterized in that, The second pressure-transmitting diaphragm (201) on the second connector component faces the first pressure-transmitting diaphragm (107) on the first connector component, and the second capillary (203) extends through the second connector component to the measuring chamber.

12. The pressure remote transmission device according to claim 6, characterized in that, The overall elastic properties of the diaphragm assembly formed when the first pressure-transmitting diaphragm (107) and the second pressure-transmitting diaphragm (201) are bonded together are consistent with the elastic properties of the pressure-measuring diaphragm.

13. The pressure remote transmission device according to claim 12, characterized in that, The pressure measuring diaphragm (102), the first pressure transmitting diaphragm (107), and the second pressure transmitting diaphragm (201) are all circular metal sheets, wherein the diameter of the first pressure transmitting diaphragm is larger than the diameter of the pressure measuring diaphragm, and the diameter of the second pressure transmitting diaphragm is equal to the diameter of the first pressure transmitting diaphragm.

14. The pressure remote transmission device according to claim 13, characterized in that, The sum of the thickness of the first pressure-transmitting diaphragm (107) and the thickness of the second pressure-transmitting diaphragm (201) is equal to the thickness of the pressure-measuring diaphragm (102).

15. The pressure remote transmission device according to claim 13, characterized in that, Both the first pressure-transmitting diaphragm (107) and the second pressure-transmitting diaphragm (201) are corrugated diaphragms with annular corrugations. When the first pressure-transmitting component (100) and the second pressure-transmitting component (200) are positioned and connected, the annular corrugations of the two corrugated diaphragms are interlocked with each other, so that the first pressure-transmitting diaphragm and the second pressure-transmitting diaphragm are tightly attached.

16. The pressure remote transmission device according to claim 13, characterized in that, The pressure measuring diaphragm (102) is a corrugated diaphragm with annular corrugations, and the pressure measuring base (103) has the same annular corrugations on the end face on which the pressure measuring diaphragm is placed.

17. The pressure remote transmission device according to claim 13, characterized in that, The first pressure-transmitting diaphragm (107) is a corrugated diaphragm with annular corrugations, and the first connector component has the same annular corrugations on the end face on which the first pressure-transmitting diaphragm is placed.

18. The pressure remote transmission device according to claim 13, characterized in that, The second pressure-transmitting diaphragm (201) is a corrugated diaphragm with annular corrugations, and the second connector component has the same annular corrugations on the end face on which the second pressure diaphragm is placed.

19. A pressure measuring device, characterized in that, The pressure measuring device includes a pressure transmission device as described in any one of claims 1-18 and a pressure transmitter (205) connected to the pressure transmission device, wherein the pressure transmitter receives and measures the pressure transmitted by the pressure transmission device at the remote target point.

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