Pressure transmitter

Abstract

The present invention provides a pressure transmitter, which includes: a shell, the shell is provided with a mounting cavity; a data processing component is arranged in the mounting cavity; a data interface is arranged in the shell and electrically connected to the data processing component, the data interface is used to connect to a host computer; a pressure detection component is arranged in the mounting cavity and is located on a side of the data processing component away from the data interface, the pressure detection component is electrically connected to the data processing component; a first buffer component is arranged between the pressure detection component and the inner wall of the shell, and is located on the peripheral side of the pressure detection component, the first buffer component is respectively against the pressure detection component and the inner wall of the shell.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure transmitters, and in particular to a pressure transmitter. Background Art

[0002] At present, the pressure measuring transmitters used in relevant technologies for measuring soil bin pressure, mud pressure, air cushion mud pressure, grouting pressure, circulating pipe pressure and lubricating grease pressure in engineering machinery such as shield machines and tunnel boring machines have poor radial impact resistance, resulting in a decrease in the output accuracy of the pressure measuring transmitter and a reduction in the service life of the pressure measuring transmitter. Summary of the invention

[0003] The embodiments of the present invention are intended to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of an embodiment of the present invention provides a pressure transmitter.

[0005] In view of this, according to a first aspect of an embodiment of the present invention, a pressure transmitter is provided, comprising: a shell, the shell being provided with an installation cavity; a data processing component being provided in the installation cavity; a data interface being provided in the shell and electrically connected to the data processing component, the data interface being used to connect to a host computer; a pressure detection component being provided in the installation cavity and located on a side of the data processing component away from the data interface, the pressure detection component being electrically connected to the data processing component; a first buffer component being provided between the pressure detection component and the inner wall of the shell, and being located on the peripheral side of the pressure detection component, the first buffer component being respectively against the pressure detection component and the inner wall of the shell.

[0006] The pressure transmitter provided in the embodiment of the present invention includes a housing, a data processing component, a data interface, a pressure detection component and a first buffer component. Specifically, the data processing component is arranged in the installation cavity, the data processing component is electrically connected to the data interface and the pressure detection component, the data interface is used to connect to the host computer, and it can be understood that the pressure detection component is used to detect the pressure of the medium to be measured. Among them, the pressure of the medium to be measured includes soil bin pressure, mud and water pressure, air cushion mud and water pressure, grouting pressure, circulation pipeline pressure and lubricating grease pressure in engineering machinery such as shield machines and tunnel boring machines.

[0007] Specifically, when the pressure transmitter is installed on the customer's equipment, the pressure of the measured medium acts on the pressure detection device. The pressure detection device collects the pressure signal, performs preliminary processing, and sends it to the data processing component. The data processing component converts the pressure signal into the method required by the customer (current or voltage) and transmits it to the client host computer through the data interface.

[0008] It is understandable that for engineering machinery such as shield machines and tunnel boring machines, the most important thing during tunnel excavation is to balance and maintain the pressure on the face. If the pressure of the soil and groundwater on the face cannot be balanced and resisted, the face will collapse, the shield machine will be destroyed, the tunnel will be flooded, and major construction accidents and casualties will occur, causing huge losses.

[0009] Earth Pressure Shield and Slurry Earth Pressure Shield use soil bin pressure and slurry bin pressure (air cushion slurry bin pressure) to provide face balance pressure, and accurate measurement of these pressures is crucial. At the same time, the measurement of pressures such as circulating pipe pressure, grouting pressure and lubricating grease pressure is also indispensable to ensure the normal operation of the shield machine.

[0010] The first buffer is arranged between the inner wall of the housing and the pressure detection member, and the first buffer is located on the circumferential side of the pressure detection member, that is, if the cross-sectional shape of the housing is circular, then along the radial direction of the housing, the first buffer is located between the pressure detection member and the inner wall of the housing. Alternatively, if the cross-sectional shape of the pressure detection member is circular, then along the radial direction of the pressure detection member, the first buffer is located between the pressure detection member and the inner wall of the housing.

[0011] By arranging a first buffer part on the outer periphery of the pressure detection part, when the pressure transmitter detects the pressure of the medium to be measured, the impact force on the pressure detection part in the radial direction can be effectively reduced, the wear of the pressure detection part can be reduced, the seismic resistance of the pressure detection part in the radial direction can be improved, the service life of the pressure detection part can be extended, the output accuracy of the pressure transmitter can be improved, the precise measurement of the pressure of the medium to be measured can be achieved, the balance and maintenance of the face pressure during tunnel excavation can be ensured, and the safety during the construction process can be ensured.

[0012] In addition, the first buffer member is respectively against the pressure detection member and the inner wall of the outer shell, that is, the first buffer member seals the gap between the inner wall of the outer shell and the outer peripheral surface of the pressure detection member, thereby reducing the impact on the pressure detection member in the radial direction while preventing the pressure detection member from moving in the radial direction, that is, keeping the pressure detection member centered in the axial direction of the pressure detection member, further improving the output accuracy of the pressure transmitter, improving the accuracy of the pressure detection of the medium to be measured, and thereby ensuring the construction safety during tunnel excavation.

[0013] In addition, the pressure transmitter provided according to the above technical solution of the present invention also has the following additional technical features:

[0014] In some technical solutions, optionally, the pressure transmitter further includes a second buffer component, and the second buffer component is arranged on a side of the pressure detection component away from the data interface.

[0015] In this technical solution, it is defined that the pressure transmitter also includes a second buffer component. Specifically, the second buffer component is arranged on the side of the pressure detection component away from the data interface, that is, the second buffer component is located on the side of the pressure detection component in the axial direction, thereby effectively reducing the impact force on the pressure detection component in the axial direction, reducing the wear of the pressure detection component, improving the seismic resistance of the pressure detection component in the axial direction, further extending the service life of the pressure detection component, improving the output accuracy of the pressure transmitter, realizing accurate measurement of the pressure of the medium to be measured, ensuring the balance and maintenance of the face pressure during tunnel excavation, and further ensuring safety during construction.

[0016] In some technical schemes, optionally, the shell is provided with a first through hole, and the first through hole is connected to the installation cavity; the pressure transmitter also includes a force-bearing member, at least a part of which is provided at the first through hole and connected to the shell, and the pressure detection member is located between the force-bearing member and the data processing component, and the force-bearing member is used to contact the medium to be measured.

[0017] In this technical solution, it is defined that the pressure transmitter also includes a force-bearing member. Specifically, the housing is provided with a first through hole connected to the installation cavity, at least a part of the force-bearing member is located at the first through hole, and the pressure detection member is located between the force-bearing member and the data processing component.

[0018] Specifically, the force-bearing part contacts the medium to be tested, and the pressure of the medium to be tested is transmitted to the pressure detection part through the force-bearing part. The pressure detection part preliminarily processes the collected pressure signal and sends it to the data processing component, and finally transmits it to the host computer through the data interface to realize the pressure detection of the medium to be tested.

[0019] By using the force-bearing parts as the medium for pressure transmission, compared with the pressure measurement transmitters in the related technology including piston-type silicone oil sealing systems and diffused silicon cores (or other types of pressure cores), it can effectively prevent the problem of transmitter output accuracy or transmitter failure caused by the piston being blocked by mud, sand, adhesives, etc.

[0020] At the same time, since there is no silicone oil sealing system, that is, silicone oil is not used as the medium for pressure transmission, there is no problem of silicone oil leakage causing the transmitter measurement accuracy to decrease or fail, further improving the detection accuracy and reliability of the pressure transmitter.

[0021] In some technical solutions, optionally, the force-bearing member includes a flexible member; and / or the force-bearing member includes a wear-resistant member.

[0022] In this technical solution, it is defined that the force-bearing member includes a flexible member, that is, the force-bearing member is made of a flexible material. This can further reduce the impact force of the pressure detection member in the axial direction, improve the anti-seismic performance of the pressure detection member in the axial direction, extend the service life of the pressure detection member, and improve the detection accuracy of the pressure transmitter.

[0023] The force-bearing part includes a wear-resistant part, that is, the force-bearing part is wear-resistant. Since the force-bearing part is located between the pressure detection part and the medium to be measured, and the force-bearing part is wear-resistant, it can protect the pressure detection part and reduce the shear wear on the surface of the pressure detection part, further extending the service life of the pressure detection part.

[0024] At the same time, compared with the pressure measurement transmitters in the related technologies including large corrugated diaphragms, flat welded silicone oil sealing systems and diffused silicon cores (or other types of pressure cores), since the force-bearing parts have a certain thickness and are wear-resistant, they can effectively prevent the force-bearing parts from being pierced or worn through by sharp-edged gravel, resulting in a decrease in transmitter output accuracy or failure of the transmitter, resist shear wear performance parallel to the surface of the pressure detection part, and improve the detection accuracy of the pressure transmitter.

[0025] In some technical schemes, optionally, the force-bearing member includes a main body and a mounting portion, wherein the main body is arranged at the first through hole, the main body is provided with a first channel, and the first channel penetrates the main body along the thickness direction of the main body, the mounting portion is arranged at the outer periphery of the main body and is located in the mounting cavity, the mounting portion is provided with a second channel, and the first end of the second channel is connected to an end of the first channel toward the pressure detection member; there is a gap between the outer wall of the main body and the inner wall of the outer shell located at the first through hole, and the gap is connected to the second end of the second channel and the medium to be measured.

[0026] In this technical solution, it is defined that the force-bearing member includes a body and a mounting portion. Specifically, the body is arranged at the first through hole, the mounting portion is arranged on the outer periphery of the body, and the mounting portion is located in the mounting cavity.

[0027] The first channel is disposed through the body, that is, one end of the first channel is connected to the installation cavity, and the other end of the first channel is connected to the medium to be measured.

[0028] The second channel is arranged on the mounting portion, and one end of the second channel is connected to one end of the first channel facing the pressure detection member, and the gap formed between the inner wall of the housing located at the first through hole and the outer wall of the body is connected to the second end of the second channel, and the gap is connected to the medium to be measured. In other words, the first channel, the second channel and the gap form a circulation passage, thereby realizing the anti-blocking design of the force-bearing member, preventing the blockage of mud and sand, and further realizing the accurate detection of the pressure of the medium to be measured by the pressure transmitter.

[0029] In some technical solutions, optionally, a connecting groove is provided on a side of the body facing the pressure detecting member, and an end of the first channel facing the pressure detecting member is connected to the first end of the second channel through the connecting groove.

[0030] In this technical solution, it is defined that the main body is also provided with a connecting groove. Specifically, the connecting groove is arranged on the side of the main body facing the pressure detecting part, that is, the connecting groove is arranged on the inner surface of the main body, and one end of the first channel facing the pressure detecting part is connected with the first end of the second channel through the connecting groove.

[0031] In some technical schemes, optionally, the shell includes a shell and a mounting piece, wherein the shell is provided with a mounting cavity and a first through hole, the mounting piece is arranged in the mounting cavity and is located on the side of the data processing component away from the data interface, and the mounting piece is against the force-bearing piece and the data processing component; the mounting piece has a cavity, the pressure detection piece is arranged in the cavity, and the first buffer piece is located between the pressure detection piece and the inner wall of the mounting piece.

[0032] In this technical solution, it is defined that the shell includes a shell and a mounting part. Specifically, the mounting part is located on the side of the data processing component away from the data interface, and the mounting part is abutted against the force-bearing part and the data processing component, thereby achieving compression and fixation of the force-bearing part and improving the installation stability of the force-bearing part.

[0033] The mounting member is provided with a cavity, the pressure detection member is arranged in the cavity, and the first buffer member is located between the pressure detection member and the inner wall of the mounting member, thereby improving the seismic resistance of the pressure detection member in the radial direction, and further improving the output accuracy of the pressure transmitter.

[0034] In some technical solutions, optionally, the pressure transmitter further includes a plurality of third buffer members, and the plurality of third buffer members are arranged between the outer wall of the mounting member and the inner wall of the shell.

[0035] In this technical solution, it is defined that the pressure transmitter also includes a plurality of third buffer members. Specifically, a plurality of third buffer members are arranged between the outer wall of the mounting member and the inner wall of the shell, thereby further improving the seismic resistance of the pressure transmitter in the radial direction of the pressure detection member and improving the output accuracy of the pressure transmitter.

[0036] At the same time, since a plurality of third buffer members are arranged between the outer wall of the mounting member and the inner wall of the shell, the sealing between the outer wall of the mounting member and the inner wall of the shell can be improved, further ensuring the accuracy of the pressure transmitter in detecting the pressure of the medium to be measured.

[0037] In some technical schemes, optionally, the shell includes a mounting plate, a first shell body and a second shell body, wherein the mounting plate is used for fixed installation, the data interface is arranged on the mounting plate, the first shell body is connected to the mounting plate, the second shell body is detachably connected to the first shell body, the mounting plate, the first shell body and the second shell body are enclosed to form an installation cavity, the data processing component is connected to the second shell body, and the second shell body is provided with a first through hole; the pressure transmitter also includes a seal, which is arranged at the connection between the mounting plate and the first shell body.

[0038] In this technical solution, it is defined that the housing includes a mounting plate, a first housing body and a second housing body. Specifically, the mounting plate is used for fixed installation, that is, the mounting plate is used to connect the customer's equipment, that is, the pressure transmitter is installed on the customer's equipment through the mounting plate. Optionally, a plurality of connection holes are provided on the mounting plate.

[0039] The first shell body is connected to the mounting plate. Specifically, the first shell body is fixedly connected to the mounting plate by a plurality of third screws.

[0040] A sealing member is provided at the connection between the mounting plate and the first shell body, thereby sealing the connection between the mounting plate and the first shell body and improving the sealing performance of the mounting cavity.

[0041] The second shell body is detachably connected to the first shell body, that is, the first shell body and the second shell body are designed to be split, so that during the production and assembly process, the installation difficulty can be reduced, the operation convenience can be improved, and the production efficiency can be improved.

[0042] In some technical solutions, optionally, the pressure transmitter further includes a first gasket, which is disposed between the mounting member and the data processing component.

[0043] In this technical solution, it is defined that the pressure transmitter also includes a first gasket, specifically, the first gasket is arranged between the mounting member and the data processing component. It can be understood that the mounting seat of the data processing component is threadedly matched with the second shell body. In the process of tightening the mounting seat, by setting the first gasket, it is possible to effectively prevent the mounting seat from driving the mounting member to rotate in the mounting cavity during the rotation process, thereby preventing the plurality of third buffer members and the first buffer member from twisting and deforming, thereby ensuring the sealing between the outer wall of the mounting member and the inner wall of the shell (the inner wall of the second shell body), and ensuring the effective sealing of the gap between the inner wall of the mounting member and the pressure detection member, thereby improving the installation stability of the pressure detection member, and thereby improving the output accuracy of the pressure transmitter.

[0044] In some technical solutions, optionally, a first threaded hole is provided at one end of the mounting member facing the data processing component.

[0045] In this technical solution, a first threaded hole is provided at one end of the mounting piece facing the data processing component, that is, a first threaded hole is provided on the upper surface of the mounting piece, so that during the installation process of the pressure transmitter, when rework is performed, the mounting piece can be removed from the mounting cavity through the first threaded hole, thereby improving the convenience of the pressure transmitter during the installation process.

[0046] In some technical solutions, optionally, the pressure transmitter also includes a fastener, which is arranged in the cavity and located on the side of the pressure detecting part away from the force-bearing part, and one end of the fastener facing the pressure detecting part is against the pressure detecting part; wherein the fastener is threadedly connected to the inner wall of the mounting part.

[0047] In this technical solution, it is defined that the pressure transmitter also includes a fastener. Specifically, the fastener is arranged in the cavity, and one end of the fastener facing the pressure detecting component abuts against the pressure detecting component, thereby achieving compression and fixation of the pressure detecting component.

[0048] The fastener is threadedly connected to the inner wall of the mounting part, so that when the pressure transmitter uses pressure sensing parts of different specifications, the thickness difference and thickness tolerance of the pressure sensing part in the axial direction can be absorbed, ensuring that the pressure sensing part can be compressed in the axial direction to ensure the sealing.

[0049] In some technical solutions, optionally, the pressure transmitter further includes a second gasket and a flexible gasket, wherein the second gasket is arranged between the pressure detecting member and the fastener, and the flexible gasket is arranged between the second gasket and the pressure detecting member.

[0050] In this technical solution, it is defined that the pressure transmitter also includes a second gasket and a flexible gasket. Specifically, the second gasket is arranged between the pressure detection member and the fastener. It can be understood that due to the threaded fit between the fastener and the inner wall of the mounting member, by arranging the second gasket, in the process of tightening the fastener, the fastener can be effectively prevented from driving the pressure detection member to rotate, thereby preventing the first buffer member and the second buffer member from twisting and deforming, ensuring the installation stability of the first buffer member and the second buffer member, ensuring the effective sealing of the gap between the inner wall of the mounting member and the pressure detection member, and further ensuring the seismic performance of the pressure detection member in the radial and axial directions.

[0051] The flexible pad is arranged between the second gasket and the pressure detection part, so as to protect the pressure detection part during the process of tightening the fastener, prevent the surface of the pressure detection part from being scratched, ensure the service life of the pressure detection part, and further ensure the output accuracy of the pressure transmitter.

[0052] In some technical schemes, optionally, the fastener is provided with a second through hole, and the second through hole is connected to the cavity; the pressure transmitter also includes a ventilation tube and a waterproof ventilation valve, wherein the first end of the ventilation tube is inserted into the second through hole and connected to the second through hole, the second end of the ventilation tube is located in the installation cavity and connected to the installation cavity, and the waterproof ventilation valve is provided in the shell and connected to the installation cavity and the outside.

[0053] In this technical solution, it is defined that the pressure transmitter also includes a ventilation tube and a waterproof ventilation valve. Specifically, one end of the ventilation tube is inserted into the second through hole and communicated with the second through hole, the other end of the ventilation tube is located in the installation cavity and communicated with the installation cavity, the waterproof ventilation valve is arranged on the shell, and the waterproof ventilation valve is communicated with the installation cavity and the outside.

[0054] Since the second through hole is connected to the cavity and the pressure detection element is arranged in the cavity, it can be ensured that the surface pressure of the pressure detection element is connected to the atmospheric environment, thereby ensuring the output accuracy of the pressure transmitter.

[0055] It can be understood that the cable electrically connecting the pressure detection component and the data processing component passes through the second through hole and the hole on the rubber baffle to achieve communication connection.

[0056] In some technical solutions, optionally, the pressure transmitter also includes a sealant and a rubber baffle plate, wherein the sealant is disposed in the installation cavity, the rubber baffle plate is disposed at the second through hole and connected to the inner wall of the fastener, and the first end of the air tube is disposed on the rubber baffle plate.

[0057] In this technical solution, it is defined that the pressure transmitter also includes sealant and a rubber baffle. Specifically, the sealant is arranged in the installation cavity. That is to say, after the various parts of the pressure transmitter are assembled and tested, the sealant is poured into the installation cavity to improve the sealing of the installation cavity. The installation cavity has excellent sealing performance. Specifically, the sealing reaches IP67 and above, further improving the output accuracy of the pressure transmitter and realizing accurate measurement of the pressure of the medium to be measured, thereby realizing reliable balance and maintenance of the face pressure, and then improving safety during the construction process.

[0058] The rubber baffle is arranged at the second through hole, and the rubber baffle is connected to the inner wall of the fastener, and the first end of the air vent is arranged on the rubber baffle, so as to fix the air vent.

[0059] At the same time, when the sealant is poured into the installation cavity, the sealant baffle can effectively prevent the sealant from flowing through the second through hole to the surface of the pressure detection component, thereby affecting the performance of the pressure detection component.

[0060] In some technical solutions, optionally, the pressure transmitter further includes a protective member, which is disposed on the housing, and the protective member is provided with a communicating protective cavity and an opening, and at least a portion of the data interface is located in the protective cavity.

[0061] In this technical solution, it is defined that the pressure transmitter also includes a protective part. Specifically, the protective part is arranged on the outer shell, and the protective part is provided with a protective cavity and an opening, wherein the opening is connected to the protective cavity, and at least a part of the data interface is located in the protective cavity, thereby being able to protect the data interface and the cable connecting the data interface and the host computer, reducing damage to the data interface and the cable, and ensuring effective data transmission.

[0062] The protective member is provided with an opening, which is convenient for operators to connect the cable and the data interface through the opening, thereby reducing the difficulty of installation and improving assembly efficiency.

[0063] In some technical solutions, optionally, the protective member includes a protective body and a fixing member, wherein the protective body is provided with an opening and a protective cavity, and the fixing member is connected to the protective body and the outer shell.

[0064] In this technical solution, it is defined that the protective part includes a protective body and a fixing part. Specifically, the fixing part is connected to the protective body and the outer shell, that is, the protective body is connected to the outer shell through the fixing part, that is, the protective body and the fixing part are a split structure, that is, the protective body and the fixing part are two separate components, thereby reducing the waste of raw materials during part cutting and processing, reducing the production cost of the pressure transmitter, and at the same time, it can also reduce the deformation problem caused by part processing.

[0065] Specifically, when installing the protective member, the protective body and the fixing member are firstly welded together by annular seams, and then the fixing member is connected to the housing.

[0066] In some technical solutions, optionally, the pressure transmitter also includes a temperature detection component and an insulating heat conductive component, wherein the temperature detection component is arranged in the installation cavity, the temperature detection component is electrically connected to the data processing component, the insulating heat conductive component is arranged between the temperature detection component and the inner wall of the outer shell, and the temperature detection component is fitted with the inner wall of the outer shell through the insulating heat conductive component.

[0067] In this technical solution, it is defined that the pressure transmitter also includes a temperature detection component and an insulating heat conductive component. Specifically, the temperature detection component is arranged in the installation cavity, and the temperature detection component is electrically connected to the data processing component. It can be understood that the temperature detection component can detect the temperature of the medium to be measured or the temperature of the soil bin where the medium to be measured is located. The detection result is transmitted to the host computer through the data processing component and the data interface, so that the pressure in the soil bin can be indirectly judged according to actual needs, thereby ensuring the reliable operation of the shield machine.

[0068] The insulating heat conductive member is arranged between the temperature detecting member and the inner wall of the shell, and the temperature detecting member is attached to the inner wall of the shell through the insulating heat conductive member, that is, when the temperature detecting member is attached to the inner wall of the shell, the insulating heat conductive member fills the gap between the temperature detecting member and the inner wall of the shell. Since the insulating heat conductive member has thermal conductivity, the temperature detecting member can accurately measure the temperature of the medium to be measured or the soil bin where the medium to be measured is located.

[0069] In some technical schemes, optionally, the data processing component includes a mounting seat and at least one circuit board, wherein the mounting seat is connected to the inner wall of the outer shell, the at least one circuit board is arranged on the mounting seat and is electrically connected to the pressure detection device and the data interface; a second threaded hole and a mounting hole are provided on the side of the mounting seat facing away from the pressure detection device.

[0070] In this technical solution, it is defined that the data processing component includes a mounting seat and at least one circuit board. Specifically, the mounting seat is connected to the inner wall of the shell, and specifically, the mounting seat is threadedly connected to the second shell body.

[0071] At least one circuit board is arranged on the mounting seat, and at least one circuit board is electrically connected to the pressure detection element and the data interface. It is understandable that when the pressure transmitter includes a temperature detection element, the number of the circuit boards is two.

[0072] A second threaded hole is provided on the side of the mounting seat away from the pressure detection member. Since the mounting seat is threadedly connected to the second shell body, the second threaded hole can be provided to facilitate the mounting seat to be screwed onto the second shell body, thereby facilitating the installation of the mounting seat.

[0073] A mounting hole is also provided on the side of the mounting seat away from the pressure detection member. The mounting hole is used for taking out the mounting seat according to actual needs during the installation of the pressure transmitter.

[0074] Additional aspects and advantages according to the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0076] Figure 1 One of the structural schematic diagrams of a pressure transmitter according to an embodiment of the present invention is shown;

[0077] Figure 2 A second structural schematic diagram of a pressure transmitter according to an embodiment of the present invention is shown;

[0078] Figure 3 A partial structural schematic diagram of a pressure transmitter according to an embodiment of the present invention is shown;

[0079] Figure 4 It shows one of the structural schematic diagrams of a force bearing member according to an embodiment of the present invention;

[0080] Figure 5 A second structural schematic diagram of a force-bearing member according to an embodiment of the present invention is shown;

[0081] Figure 6 A third structural schematic diagram of a force-bearing member according to an embodiment of the present invention is shown.

[0082] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0083] 100 pressure transmitter, 110 housing, 111 mounting cavity, 112 first through hole, 113 housing, 114 mounting member, 115 cavity, 120 data processing component, 121 mounting seat, 122 circuit board, 123 second threaded hole, 130 data interface, 140 pressure detection member, 150 first buffer member, 160 second buffer member, 170 force bearing member, 171 body, 172 mounting portion, 173 first channel, 174 second channel, 175 gap, 176 connection Groove, 180 third buffer member, 190 mounting plate, 210 first shell body, 220 second shell body, 230 sealing member, 240 first gasket, 250 first threaded hole, 260 fastener, 261 second through hole, 270 second gasket, 280 flexible pad, 290 air pipe, 310 waterproof air valve, 320 sealant, 330 rubber baffle, 340 protective member, 341 protective cavity, 342 opening, 343 protective body, 344 fixing member, 350 temperature detection member. DETAILED DESCRIPTION

[0084] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0085] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0086] Refer to the following Figures 1 to 6 A pressure transmitter 100 provided according to some embodiments of the present invention is described.

[0087] In one embodiment according to the present application, Figure 1 , Figure 2 and Figure 3 As shown, a pressure transmitter 100 is proposed, and the pressure transmitter 100 includes: a shell 110, and the shell 110 is provided with a mounting cavity 111; a data processing component 120, which is arranged in the mounting cavity 111; a data interface 130, which is arranged in the shell 110 and electrically connected to the data processing component 120, and the data interface 130 is used to connect to a host computer; a pressure detection component 140, which is arranged in the mounting cavity 111 and is located on the side of the data processing component 120 away from the data interface 130, and the pressure detection component 140 is electrically connected to the data processing component 120; a first buffer component 150, which is arranged between the pressure detection component 140 and the inner wall of the shell 110 and is located on the peripheral side of the pressure detection component 140, and the first buffer component 150 is respectively against the pressure detection component 140 and the inner wall of the shell 110.

[0088] The pressure transmitter 100 provided in the embodiment of the present invention includes a housing 110, a data processing component 120, a data interface 130, a pressure detection component 140 and a first buffer component 150. Specifically, the data processing component 120 is arranged in the installation cavity 111, and the data processing component 120 is electrically connected to the data interface 130 and the pressure detection component 140. The data interface 130 is used to connect to the host computer. It can be understood that the pressure detection component 140 is used to detect the pressure of the medium to be measured. Among them, the pressure of the medium to be measured includes soil bin pressure, mud and water pressure, air cushion mud and water pressure, grouting pressure, circulation pipeline pressure and lubricating grease pressure in engineering machinery such as shield machines and tunnel boring machines.

[0089] Specifically, when the pressure transmitter 100 is installed on the customer's equipment, the pressure of the measured medium acts on the pressure detection component 140. The pressure detection component 140 collects the pressure signal, performs preliminary processing, and then sends it to the data processing component 120. The data processing component 120 converts the pressure signal into the method required by the customer (current or voltage) and transmits it to the client host computer through the data interface 130.

[0090] It is understandable that for engineering machinery such as shield machines and tunnel boring machines, the most important thing during tunnel excavation is to balance and maintain the pressure on the face. If the pressure of the soil and groundwater on the face cannot be balanced and resisted, the face will collapse, the shield machine will be destroyed, the tunnel will be flooded, and major construction accidents and casualties will occur, causing huge losses.

[0091] Earth Pressure Shield and Slurry Earth Pressure Shield use soil bin pressure and slurry bin pressure (air cushion slurry bin pressure) to provide face balance pressure, and accurate measurement of these pressures is crucial. At the same time, the measurement of pressures such as circulating pipe pressure, grouting pressure and lubricating grease pressure is also indispensable to ensure the normal operation of the shield machine.

[0092] The first buffer member 150 is disposed between the inner wall of the housing 110 and the pressure detection member 140, and the first buffer member 150 is located on the circumferential side of the pressure detection member 140, that is, if the cross-sectional shape of the housing 110 is circular, then along the radial direction of the housing 110, the first buffer member 150 is located between the pressure detection member 140 and the inner wall of the housing 110. Alternatively, if the cross-sectional shape of the pressure detection member 140 is circular, then along the radial direction of the pressure detection member 140, the first buffer member 150 is located between the pressure detection member 140 and the inner wall of the housing 110.

[0093] By arranging a first buffer component 150 on the outer periphery of the pressure detection component 140, when the pressure transmitter 100 detects the pressure of the medium to be measured, the impact force on the pressure detection component 140 in the radial direction can be effectively reduced, the wear of the pressure detection component 140 can be reduced, the seismic resistance of the pressure detection component 140 in the radial direction can be improved, the service life of the pressure detection component 140 can be extended, the output accuracy of the pressure transmitter 100 can be improved, and the precise measurement of the pressure of the medium to be measured can be achieved, thereby ensuring the balance and maintenance of the face pressure during tunnel excavation, thereby ensuring safety during the construction process.

[0094] In addition, the first buffer component 150 is respectively against the inner wall of the pressure detection component 140 and the outer wall of the outer shell 110, that is, the first buffer component 150 seals the gap between the inner wall of the outer shell 110 and the outer peripheral surface of the pressure detection component 140, so as to reduce the impact on the pressure detection component 140 in the radial direction while preventing the pressure detection component 140 from moving in the radial direction, that is, in the axial direction of the pressure detection component 140, the pressure detection component 140 is kept centered, thereby further improving the output accuracy of the pressure transmitter 100, improving the accuracy of the pressure detection of the medium to be measured, and thereby ensuring the construction safety during tunnel excavation.

[0095] Optionally, the pressure detection component 140 includes a ceramic core. It is understandable that the ceramic core has super impact resistance and wear resistance, which can further extend the service life of the pressure detection component 140, improve the output accuracy of the pressure transmitter 100, and further improve the accuracy of the pressure detection of the medium to be measured.

[0096] Optionally, the pressure transmitter 100 further includes a cable, one end of which is connected to the data interface 130 , and the other end of which is connected to a host computer.

[0097] Optionally, the cable is threadably connected to the data interface 130 .

[0098] Optionally, the first buffer member 150 includes an O-ring.

[0099] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, optionally, the pressure transmitter 100 further includes a second buffer 160 , and the second buffer 160 is disposed on a side of the pressure detecting component 140 facing away from the data interface 130 .

[0100] In this embodiment, it is defined that the pressure transmitter 100 also includes a second buffer component 160. Specifically, the second buffer component 160 is arranged on the side of the pressure detection component 140 away from the data interface 130, that is, the second buffer component 160 is located on the side of the pressure detection component 140 in the axial direction, so as to effectively reduce the impact force on the pressure detection component 140 in the axial direction, reduce the wear of the pressure detection component 140, improve the seismic resistance of the pressure detection component 140 in the axial direction, further extend the service life of the pressure detection component 140, improve the output accuracy of the pressure transmitter 100, realize the precise measurement of the pressure of the medium to be measured, ensure the balance and maintenance of the face pressure during tunnel excavation, and further ensure the safety during the construction process.

[0101] Optionally, the second buffer member 160 includes an O-ring.

[0102] like Figure 1 and Figure 3 As shown, in some embodiments, optionally, the housing 110 is provided with a first through hole 112, and the first through hole 112 is connected to the installation cavity 111; the pressure transmitter 100 also includes a force-bearing member 170, at least a portion of the force-bearing member 170 is provided at the first through hole 112 and is connected to the housing 110, the pressure detection member 140 is located between the force-bearing member 170 and the data processing component 120, and the force-bearing member 170 is used to contact the medium to be measured.

[0103] In this embodiment, it is defined that the pressure transmitter 100 also includes a force-bearing member 170. Specifically, the housing 110 is provided with a first through hole 112 connected to the installation cavity 111. At least a portion of the force-bearing member 170 is located at the first through hole 112. The pressure detection member 140 is located between the force-bearing member 170 and the data processing component 120.

[0104] Specifically, the force-bearing member 170 contacts the medium to be tested, and the pressure of the medium to be tested is transmitted to the pressure detection member 140 through the force-bearing member 170. The pressure detection member 140 preliminarily processes the collected pressure signal and sends it to the data processing component 120, and finally transmits it to the host computer through the data interface 130 to realize pressure detection of the medium to be tested.

[0105] By using the force-bearing member 170 as the medium for pressure transmission, compared with the pressure measurement transmitter in the related technology including a piston-type silicone oil sealing system and a diffused silicon core (or other types of pressure core), it can effectively prevent the problem of the transmitter output accuracy or transmitter failure caused by the piston being blocked by mud, sand, adhesives, etc.

[0106] At the same time, since there is no silicone oil sealing system, that is, silicone oil is not used as the medium for pressure transmission, there is no problem of silicone oil leakage causing the transmitter measurement accuracy to decrease or fail, further improving the detection accuracy and reliability of the pressure transmitter 100.

[0107] In some embodiments, optionally, the force-bearing member 170 includes a flexible member; and / or the force-bearing member 170 includes a wear-resistant member.

[0108] In this embodiment, the force-bearing member 170 is defined to include a flexible member, that is, the force-bearing member 170 is made of a flexible material, so as to further reduce the impact force of the pressure detection member 140 in the axial direction, improve the anti-vibration performance of the pressure detection member 140 in the axial direction, extend the service life of the pressure detection member 140, and improve the detection accuracy of the pressure transmitter 100.

[0109] The force-bearing member 170 includes a wear-resistant member, that is, the force-bearing member 170 is wear-resistant. Since the force-bearing member 170 is located between the pressure detection member 140 and the medium to be detected, and the force-bearing member 170 is wear-resistant, it can protect the pressure detection member 140 and reduce the shear wear on the surface of the pressure detection member 140, further extending the service life of the pressure detection member 140.

[0110] At the same time, compared with the pressure measuring transmitter in the related technology including large corrugated diaphragm, flat welded silicone oil sealing system and diffused silicon core (or other types of pressure core), since the force-bearing part 170 has a certain thickness and is wear-resistant, it can effectively prevent the force-bearing part 170 from being pierced or worn by sharp-edged gravel, resulting in a decrease in transmitter output accuracy or failure of the transmitter, resist the shear wear performance parallel to the surface of the pressure detection part 140, and improve the detection accuracy of the pressure transmitter 100.

[0111] Optionally, the stress-bearing member 170 includes a polyurethane member.

[0112] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, optionally, the force-bearing member 170 includes a main body 171 and a mounting portion 172, wherein the main body 171 is disposed at the first through hole 112, the main body 171 is provided with a first channel 173, and the first channel 173 penetrates the main body 171 along the thickness direction of the main body 171, the mounting portion 172 is disposed at the outer periphery of the main body 171 and is located in the mounting cavity 111, the mounting portion 172 is provided with a second channel 174, and the first end of the second channel 174 is connected to one end of the first channel 173 toward the pressure detecting member 140; there is a gap 175 between the outer wall of the main body 171 and the inner wall of the outer shell 110 located at the first through hole 112, and the gap 175 is connected to the second end of the second channel 174 and the medium to be measured.

[0113] In this embodiment, the force-bearing member 170 is defined to include a body 171 and a mounting portion 172 . Specifically, the body 171 is disposed at the first through hole 112 , the mounting portion 172 is disposed on the outer periphery of the body 171 , and the mounting portion 172 is located in the mounting cavity 111 .

[0114] The first channel 173 is disposed through the body 171 , that is, one end of the first channel 173 is connected to the installation cavity 111 , and the other end is connected to the medium to be measured.

[0115] The second channel 174 is disposed on the mounting portion 172, and one end of the second channel 174 is connected to one end of the first channel 173 toward the pressure detection member 140, and the gap 175 formed between the inner wall of the first through hole 112 of the housing 110 and the outer wall of the body 171 is connected to the second end of the second channel 174, and the gap 175 is connected to the medium to be measured. In other words, the first channel 173, the second channel 174 and the gap 175 form a circulation passage, thereby realizing the anti-blocking design of the force-bearing member 170, preventing the blockage of sediment, and further realizing the accurate detection of the pressure of the medium to be measured by the pressure transmitter 100.

[0116] Optionally, the cross-sectional shape of the first channel 173 is circular.

[0117] Optionally, there are multiple first channels 173 , and the multiple first channels 173 are arranged at intervals on the body 171 , and each first channel 173 passes through the body 171 .

[0118] Optionally, the cross-sectional shape of the second channel 174 is a quadrilateral.

[0119] Optionally, there are multiple second channels 174 , and the multiple second channels 174 are arranged at intervals.

[0120] like Figure 6 As shown, in some embodiments, optionally, a connecting groove 176 is provided on the side of the body 171 facing the pressure detecting member 140 , and an end of the first channel 173 facing the pressure detecting member 140 is connected to the first end of the second channel 174 through the connecting groove 176 .

[0121] In this embodiment, it is defined that the main body 171 is also provided with a connecting groove 176. Specifically, the connecting groove 176 is arranged on the side of the main body 171 facing the pressure detecting member 140. That is, the connecting groove 176 is arranged on the inner surface of the main body 171, and one end of the first channel 173 facing the pressure detecting member 140 is connected with the first end of the second channel 174 through the connecting groove 176.

[0122] Optionally, the communication groove 176 includes a semicircular groove.

[0123] Optionally, there are multiple communicating grooves 176 .

[0124] Optionally, the plurality of communication grooves 176 form a cross radial channel.

[0125] like Figure 1 As shown, in some embodiments, optionally, the housing 110 includes a shell 113 and a mounting member 114, wherein the shell 113 is provided with a mounting cavity 111 and a first through hole 112, the mounting member 114 is disposed in the mounting cavity 111 and is located on the side of the data processing component 120 away from the data interface 130, and the mounting member 114 is against the force-bearing member 170 and the data processing component 120; the mounting member 114 has a cavity 115, the pressure detection member 140 is disposed in the cavity 115, and the first buffer member 150 is located between the pressure detection member 140 and the inner wall of the mounting member 114.

[0126] In this embodiment, the housing 110 is defined to include a shell 113 and a mounting member 114. Specifically, the mounting member 114 is located on the side of the data processing component 120 away from the data interface 130, and the mounting member 114 is abutted against the force-bearing member 170 and the data processing component 120, thereby achieving compression and fixation of the force-bearing member 170 and improving the installation stability of the force-bearing member 170.

[0127] The mounting member 114 is provided with a cavity 115, the pressure detecting member 140 is arranged in the cavity 115, and the first buffer member 150 is located between the pressure detecting member 140 and the inner wall of the mounting member 114, thereby improving the seismic resistance of the pressure detecting member 140 in the radial direction, and further improving the output accuracy of the pressure transmitter 100.

[0128] like Figure 1 As shown, in some embodiments, optionally, the pressure transmitter 100 further includes a plurality of third buffer members 180 , and the plurality of third buffer members 180 are disposed between the outer wall of the mounting member 114 and the inner wall of the housing 113 .

[0129] In this embodiment, it is defined that the pressure transmitter 100 also includes a plurality of third buffer components 180. Specifically, a plurality of third buffer components 180 are arranged between the outer wall of the mounting component 114 and the inner wall of the shell 113, thereby further improving the anti-seismic performance of the pressure transmitter 100 in the radial direction of the pressure detection component 140 and improving the output accuracy of the pressure transmitter 100.

[0130] At the same time, since multiple third buffer members 180 are arranged between the outer wall of the mounting member 114 and the inner wall of the shell 113, the sealing between the outer wall of the mounting member 114 and the inner wall of the shell 113 can also be improved, further ensuring the accuracy of the pressure transmitter 100 in detecting the pressure of the medium to be measured.

[0131] Optionally, a plurality of third buffer members 180 are arranged along the axial direction of the pressure detecting member 140 .

[0132] Optionally, the third buffer member 180 includes an O-ring.

[0133] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the shell 113 includes a mounting plate 190, a first shell body 210 and a second shell body 220, wherein the mounting plate 190 is used for fixed installation, the data interface 130 is arranged on the mounting plate 190, the first shell body 210 is connected to the mounting plate 190, the second shell body 220 is detachably connected to the first shell body 210, the mounting plate 190, the first shell body 210 and the second shell body 220 are enclosed to form a mounting cavity 111, the data processing component 120 is connected to the second shell body 220, and the second shell body 220 is provided with a first through hole 112; the pressure transmitter 100 also includes a seal 230, and the seal 230 is arranged at the connection between the mounting plate 190 and the first shell body 210.

[0134] In this embodiment, the housing 113 is defined to include a mounting plate 190, a first housing body 210, and a second housing body 220. Specifically, the mounting plate 190 is used for fixed installation, that is, the mounting plate 190 is used to connect the customer's equipment, that is, the pressure transmitter 100 is installed on the customer's equipment through the mounting plate 190. Optionally, a plurality of connection holes are provided on the mounting plate 190.

[0135] The first shell body 210 is connected to the mounting plate 190 . Specifically, the first shell body 210 is fixedly connected to the mounting plate 190 by a plurality of third screws.

[0136] A sealing member 230 is disposed at the connection between the mounting plate 190 and the first shell body 210 , so as to seal the connection between the mounting plate 190 and the first shell body 210 and improve the sealing performance of the mounting cavity 111 .

[0137] The second shell body 220 is detachably connected to the first shell body 210, that is, the first shell body 210 and the second shell body 220 are designed to be split, so that during the production and assembly process, the installation difficulty can be reduced, the operation convenience can be improved, and the production efficiency can be improved.

[0138] Optionally, the first shell body 210 and the second shell body 220 are threadedly connected, which facilitates the disassembly and assembly of the shell 113 during the production and assembly process, and increases the connection strength and reliability of the first shell body 210 and the second shell body 220.

[0139] Optionally, after the pressure transmitter 100 is assembled, that is, after the first shell body 210 and the second shell body 220 are threadedly connected, the gap between the first shell body 210 and the second shell body 220 is welded to further improve the connection strength between the first shell body 210 and the second shell body 220, and improve the sealing of the installation cavity 111.

[0140] like Figure 1 As shown, in some embodiments, optionally, the pressure transmitter 100 further includes a first gasket 240 , which is disposed between the mounting member 114 and the data processing component 120 .

[0141] In this embodiment, it is defined that the pressure transmitter 100 further includes a first gasket 240, specifically, the first gasket 240 is arranged between the mounting member 114 and the data processing component 120. It can be understood that the mounting seat 121 of the data processing component 120 is threadedly matched with the second shell body 220. In the process of tightening the mounting seat 121, by setting the first gasket 240, it is possible to effectively prevent the mounting seat 121 from driving the mounting member 114 to rotate in the mounting cavity 111 during the rotation process, thereby preventing the plurality of third buffer members 180 and the first buffer member 150 from twisting and deforming, thereby ensuring the sealing between the outer wall of the mounting member 114 and the inner wall of the housing 113 (the inner wall of the second shell body 220), and ensuring the effective sealing of the gap between the inner wall of the mounting member 114 and the pressure detection member 140, thereby improving the installation stability of the pressure detection member 140, and thereby improving the output accuracy of the pressure transmitter 100.

[0142] Optionally, the first gasket 240 comprises a stainless steel gasket.

[0143] like Figure 1 As shown, in some embodiments, optionally, a first threaded hole 250 is provided at one end of the mounting member 114 facing the data processing component 120 .

[0144] In this embodiment, a first threaded hole 250 is provided at one end of the mounting member 114 facing the data processing component 120, that is, the first threaded hole 250 is provided on the upper surface of the mounting member 114, so that during the installation process of the pressure transmitter 100, when rework is performed, the mounting member 114 can be removed from the mounting cavity 111 through the first threaded hole 250, thereby improving the convenience of the pressure transmitter 100 during the installation process.

[0145] like Figure 1As shown, in some embodiments, optionally, the pressure transmitter 100 also includes a fastener 260, which is disposed in the cavity 115 and is located on the side of the pressure detecting member 140 away from the force-bearing member 170, and one end of the fastener 260 facing the pressure detecting member 140 is against the pressure detecting member 140; wherein the fastener 260 is threadedly connected to the inner wall of the mounting member 114.

[0146] In this embodiment, it is defined that the pressure transmitter 100 also includes a fastener 260 . Specifically, the fastener 260 is disposed in the cavity 115 , and one end of the fastener 260 facing the pressure detecting member 140 abuts against the pressure detecting member 140 , thereby achieving compression and fixation of the pressure detecting member 140 .

[0147] The fastener 260 is threadedly connected to the inner wall of the mounting member 114, so that when the pressure transmitter 100 uses pressure sensing members 140 of different specifications, the axial thickness difference and thickness tolerance of the pressure sensing member 140 can be absorbed, ensuring that the pressure sensing member 140 can be compressed in the axial direction to ensure sealing.

[0148] like Figure 1 As shown, in some embodiments, optionally, the pressure transmitter 100 further includes a second gasket 270 and a flexible gasket 280 , wherein the second gasket 270 is disposed between the pressure detecting member 140 and the fastener 260 , and the flexible gasket 280 is disposed between the second gasket 270 and the pressure detecting member 140 .

[0149] In this embodiment, it is defined that the pressure transmitter 100 further includes a second gasket 270 and a flexible gasket 280. Specifically, the second gasket 270 is arranged between the pressure detection member 140 and the fastener 260. It can be understood that the fastener 260 is threadedly matched with the inner wall of the mounting member 114. By arranging the second gasket 270, in the process of tightening the fastener 260, the fastener 260 can be effectively prevented from driving the pressure detection member 140 to rotate, thereby preventing the first buffer member 150 and the second buffer member 160 from twisting and deforming, ensuring the installation stability of the first buffer member 150 and the second buffer member 160, ensuring the effective sealing of the gap between the inner wall of the mounting member 114 and the pressure detection member 140, and further ensuring the anti-seismic performance of the pressure detection member 140 in the radial and axial directions.

[0150] The flexible pad 280 is arranged between the second gasket 270 and the pressure detection component 140, so as to protect the pressure detection component 140 during the process of tightening the fastener 260, prevent the surface of the pressure detection component 140 from being scratched, ensure the service life of the pressure detection component 140, and further ensure the output accuracy of the pressure transmitter 100.

[0151] Optionally, the second gasket 270 comprises a stainless steel gasket.

[0152] Optionally, the flexible pad 280 comprises a polytetrafluoroethylene gasket.

[0153] like Figure 1 As shown, in some embodiments, optionally, the fastener 260 is provided with a second through hole 261, and the second through hole 261 is connected to the cavity 115; the pressure transmitter 100 also includes a ventilation tube 290 and a waterproof ventilation valve 310, wherein the first end of the ventilation tube 290 is inserted into the second through hole 261 and is connected to the second through hole 261, the second end of the ventilation tube 290 is located in the installation cavity 111 and is connected to the installation cavity 111, and the waterproof ventilation valve 310 is provided in the shell 113, and is connected to the installation cavity 111 and the outside.

[0154] In this embodiment, it is defined that the pressure transmitter 100 also includes a ventilation tube 290 and a waterproof ventilation valve 310. Specifically, one end of the ventilation tube 290 is inserted into the second through hole 261 and communicated with the second through hole 261, and the other end of the ventilation tube 290 is located in the installation cavity 111 and communicated with the installation cavity 111. The waterproof ventilation valve 310 is arranged on the shell 113, and the waterproof ventilation valve 310 is communicated with the installation cavity 111 and the outside.

[0155] Since the second through hole 261 is connected to the cavity 115 , the pressure detection element 140 is disposed in the cavity 115 , thereby ensuring that the surface pressure of the pressure detection element 140 is connected to the atmospheric environment, thereby ensuring the output accuracy of the pressure transmitter 100 .

[0156] It can be understood that the cable electrically connecting the pressure detection component 140 and the data processing component 120 passes through the second through hole 261 and the hole on the rubber baffle 330 to achieve communication connection.

[0157] like Figure 1 As shown, in some embodiments, optionally, the pressure transmitter 100 also includes a sealant 320 and a rubber baffle plate 330, wherein the sealant 320 is disposed in the installation cavity 111, the rubber baffle plate 330 is disposed at the second through hole 261 and connected to the inner wall of the fastener 260, and the first end of the air permeable tube 290 is disposed on the rubber baffle plate 330.

[0158] In this embodiment, it is defined that the pressure transmitter 100 also includes a sealant 320 and a rubber baffle 330. Specifically, the sealant 320 is arranged in the installation cavity 111. That is, after the various parts of the pressure transmitter 100 are assembled and tested, the sealant 320 is poured into the installation cavity 111 to improve the sealing of the installation cavity 111, so that the installation cavity 111 has excellent sealing performance. Specifically, the sealing reaches IP67 and above, further improving the output accuracy of the pressure transmitter 100, and realizing accurate measurement of the pressure of the medium to be measured, thereby realizing reliable balance and maintenance of the face pressure, and further improving the safety during the construction process.

[0159] The rubber baffle plate 330 is disposed at the second through hole 261 and connected to the inner wall of the fastener 260 . The first end of the air vent 290 is disposed on the rubber baffle plate 330 , thereby fixing the air vent 290 .

[0160] Meanwhile, when the sealant 320 is poured into the installation cavity 111 , the sealant baffle 330 can effectively prevent the sealant 320 from flowing to the surface of the pressure detection element 140 through the second through hole 261 , thereby affecting the performance of the pressure detection element 140 .

[0161] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the pressure transmitter 100 further includes a protective member 340 , which is disposed on the housing 110 . The protective member 340 is provided with a connected protective cavity 341 and an opening 342 , and at least a portion of the data interface 130 is located in the protective cavity 341 .

[0162] In this embodiment, it is defined that the pressure transmitter 100 also includes a protective member 340. Specifically, the protective member 340 is disposed on the housing 110, and the protective member 340 is provided with a protective cavity 341 and an opening 342, wherein the opening 342 is communicated with the protective cavity 341, and at least a portion of the data interface 130 is located in the protective cavity 341, so that the data interface 130 and the cable connecting the data interface 130 and the host computer can be protected, thereby reducing damage to the data interface 130 and the cable, and ensuring effective data transmission.

[0163] The protective member 340 is provided with an opening 342 , which facilitates the operator to connect the cable to the data interface 130 through the opening 342 , thereby reducing the difficulty of installation and improving the assembly efficiency.

[0164] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, the protective member 340 includes a protective body 343 and a fixing member 344 , wherein the protective body 343 is provided with an opening 342 and a protective cavity 341 , and the fixing member 344 is connected to the protective body 343 and the housing 110 .

[0165] In this embodiment, the protective member 340 is defined to include a protective body 343 and a fixing member 344. Specifically, the fixing member 344 is connected to the protective body 343 and the housing 110. That is, the protective body 343 is connected to the housing 110 through the fixing member 344, that is, the protective body 343 and the fixing member 344 are a split structure, that is, the protective body 343 and the fixing member 344 are two separate components, thereby reducing the waste of raw materials during part cutting and processing, reducing the production cost of the pressure transmitter 100, and at the same time, reducing the deformation problem caused by part processing.

[0166] Specifically, when installing the protective member 340 , the protective body 343 and the fixing member 344 are firstly welded together by an annular seam, and then the fixing member 344 is connected to the housing 110 .

[0167] Optionally, the pressure transmitter 100 further includes second screws, and the fixing member 344 is connected to the housing 110 via a plurality of second screws.

[0168] like Figure 1 As shown, in some embodiments, optionally, the pressure transmitter 100 also includes a temperature detection component 350 and an insulating heat conductive component, wherein the temperature detection component 350 is disposed in the installation cavity 111, the temperature detection component 350 is electrically connected to the data processing component 120, the insulating heat conductive component is disposed between the temperature detection component 350 and the inner wall of the outer shell 110, and the temperature detection component 350 is in contact with the inner wall of the outer shell 110 through the insulating heat conductive component.

[0169] In this embodiment, it is defined that the pressure transmitter 100 also includes a temperature detection component 350 and an insulating heat conductive component. Specifically, the temperature detection component 350 is arranged in the installation cavity 111, and the temperature detection component 350 is electrically connected to the data processing component 120. It can be understood that the temperature detection component 350 can detect the temperature of the medium to be measured or the temperature of the soil bin where the medium to be measured is located. The detection result is transmitted to the host computer through the data processing component 120 and the data interface 130, so that the pressure in the soil bin can be indirectly judged according to actual needs to ensure the reliable operation of the shield machine.

[0170] The insulating heat conductive member is disposed between the temperature detection member 350 and the inner wall of the housing 110, and the temperature detection member 350 is attached to the inner wall of the housing 110 through the insulating heat conductive member, that is, when the temperature detection member 350 is attached to the inner wall of the housing 110, the insulating heat conductive member fills the gap between the temperature detection member 350 and the inner wall of the housing 110. Since the insulating heat conductive member has thermal conductivity, the temperature detection member 350 can accurately measure the temperature of the medium to be measured or the soil bin where the medium to be measured is located.

[0171] Optionally, the temperature detection element 350 includes a temperature platinum resistor.

[0172] like Figure 1 As shown, in some embodiments, optionally, the data processing component 120 includes a mounting base 121 and at least one circuit board 122, wherein the mounting base 121 is connected to the inner wall of the housing 110, and at least one circuit board 122 is disposed on the mounting base 121 and is electrically connected to the pressure detection component 140 and the data interface 130; a second threaded hole 123 and a mounting hole are provided on the side of the mounting base 121 facing away from the pressure detection component 140.

[0173] In this embodiment, it is defined that the data processing component 120 includes a mounting seat 121 and at least one circuit board 122 . Specifically, the mounting seat 121 is connected to the inner wall of the housing 110 , and specifically, the mounting seat 121 is threadedly connected to the second shell body 220 .

[0174] At least one circuit board 122 is disposed on the mounting base 121, and at least one circuit board 122 is electrically connected to the pressure detection element 140 and the data interface 130. It is understandable that when the pressure transmitter 100 includes the temperature detection element 350, the number of the circuit boards 122 is two.

[0175] A second threaded hole 123 is provided on the side of the mounting seat 121 facing away from the pressure detection member 140. Since the mounting seat 121 is threadedly connected to the second shell body 220, the second threaded hole 123 facilitates the mounting seat 121 to be screwed onto the second shell body 220, thereby facilitating the installation of the mounting seat 121.

[0176] A mounting hole is also provided on the side of the mounting seat 121 away from the pressure detecting member 140 . The mounting hole is used for removing the mounting seat 121 according to actual needs during the installation of the pressure transmitter 100 .

[0177] Optionally, the mounting hole is a blind hole.

[0178] Optionally, the pressure transmitter 100 also includes multiple copper pillars and multiple first screws, the multiple copper pillars are arranged on the mounting base 121, the circuit board 122 is arranged on the multiple copper pillars, and the first screws connect the circuit board 122 and the multiple copper pillars to achieve the installation and fixation of at least one circuit board 122.

[0179] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0180] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0181] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure transmitter, characterized in that: include: A housing, wherein the housing is provided with a mounting cavity; A data processing component is arranged in the installation cavity; A data interface, provided on the housing and electrically connected to the data processing component, the data interface being used to connect to a host computer; A pressure detection component is arranged in the installation cavity and is located at a side of the data processing component away from the data interface, and the pressure detection component is electrically connected to the data processing component; a first buffer member, disposed between the pressure detection member and the inner wall of the housing and located on the peripheral side of the pressure detection member, the first buffer member abutting against the pressure detection member and the inner wall of the housing respectively; When the cross-sectional shape of the housing is circular, along the radial direction of the housing, the first buffer member is located between the pressure detecting member and the inner wall of the housing; when the cross-sectional shape of the pressure detecting member is circular, along the radial direction of the pressure detecting member, the first buffer member is located between the pressure detecting member and the inner wall of the housing; A second buffer member is provided on a side of the pressure detection member away from the data interface; The housing is provided with a first through hole, and the first through hole is communicated with the installation cavity; The pressure transmitter also includes: A force-bearing member, at least a portion of which is disposed at the first through hole and connected to the housing, the pressure detection member being located between the force-bearing member and the data processing component, and the force-bearing member being used to contact the medium to be tested; The force bearing member comprises: A body, disposed at the first through hole, the body having a first channel, and the first channel passes through the body along a thickness direction of the body; A mounting portion, arranged on the outer periphery of the body and located in the mounting cavity, the mounting portion being provided with a second channel, a first end of the second channel being connected to an end of the first channel facing the pressure detection member; There is a gap between the outer wall of the body and the inner wall of the shell located at the first through hole, and the gap is connected to the second end of the second channel and the medium to be measured; There are a plurality of first channels, and the plurality of first channels are arranged at intervals on the body, and each first channel passes through the body; there are a plurality of second channels, and the plurality of second channels are arranged at intervals; The housing comprises: A housing, wherein the housing is provided with the mounting cavity and the first through hole; A mounting member is arranged in the mounting cavity and is located at a side of the data processing component away from the data interface, wherein the mounting member abuts against the force-bearing member and the data processing component; Wherein, the mounting member has a cavity, the pressure detection member is arranged in the cavity, and the first buffer member is located between the pressure detection member and the inner wall of the mounting member; A plurality of third buffer members, disposed between the outer wall of the mounting member and the inner wall of the housing, the plurality of third buffer members being arranged along the axial direction of the pressure detection member, the third buffer members comprising an O-ring; A fastener is disposed in the cavity and is located on a side of the pressure detection member away from the force-bearing member, and one end of the fastener facing the pressure detection member abuts against the pressure detection member; The fastener is provided with a second through hole, and the second through hole is communicated with the cavity; The pressure transmitter also includes: a ventilation tube, wherein a first end of the ventilation tube is inserted into the second through hole and communicated with the second through hole, and a second end of the ventilation tube is located in the installation cavity and communicated with the installation cavity; The waterproof and breathable valve is arranged on the housing and is communicated with the installation cavity and the outside.

2. The pressure transmitter according to claim 1, characterized in that: The force-bearing member includes a flexible member; and / or The force-bearing parts include wear-resistant parts.

3. The pressure transmitter according to claim 1, characterized in that: A communication groove is provided on one side of the body facing the pressure detection member, and an end of the first channel facing the pressure detection member is communicated with a first end of the second channel through the communication groove.

4. The pressure transmitter according to claim 1, characterized in that: The housing comprises: A mounting plate, the mounting plate is used for fixed installation, and the data interface is arranged on the mounting plate; A first shell body connected to the mounting plate; A second shell body is detachably connected to the first shell body, the mounting plate, the first shell body and the second shell body enclose the mounting cavity, the data processing component is connected to the second shell body, and the second shell body is provided with the first through hole; The pressure transmitter also includes: A sealing member is arranged at the connection between the mounting plate and the first shell body.

5. The pressure transmitter according to claim 1, characterized in that: The pressure transmitter also includes: The first gasket is arranged between the mounting member and the data processing component.

6. The pressure transmitter according to claim 1, characterized in that: A first threaded hole is provided at one end of the mounting member facing the data processing component.

7. The pressure transmitter according to claim 1, characterized in that: The fastener is threadedly connected to the inner wall of the mounting member.

8. The pressure transmitter according to claim 7, characterized in that: The pressure transmitter also includes: A second gasket, disposed between the pressure detection member and the fastener; A flexible pad is arranged between the second pad and the pressure detecting member.

9. The pressure transmitter according to claim 7, characterized in that: The pressure transmitter also includes: Sealant, disposed in the installation cavity; A rubber baffle is arranged at the second through hole and connected to the inner wall of the fastener. The first end of the air vent is arranged on the rubber baffle.

10. The pressure transmitter according to any one of claims 1 to 9, characterized in that: The pressure transmitter also includes: A protective member is arranged on the housing, and the protective member is provided with a communicating protective cavity and an opening, and at least a part of the data interface is located in the protective cavity.

11. The pressure transmitter according to claim 10, characterized in that: The protective element comprises: A protective body, wherein the protective body is provided with the opening and the protective cavity; A fixing member is connected to the protective body and the shell.

12. The pressure transmitter according to any one of claims 1 to 9, characterized in that: The pressure transmitter also includes: A temperature detection component is disposed in the installation cavity, and the temperature detection component is electrically connected to the data processing component; The insulating heat-conducting member is arranged between the temperature detecting member and the inner wall of the outer shell, and the temperature detecting member is in contact with the inner wall of the outer shell through the insulating heat-conducting member.

13. The pressure transmitter according to any one of claims 1 to 9, characterized in that: The data processing component includes: A mounting seat connected to the inner wall of the housing; At least one circuit board, disposed on the mounting seat and electrically connected to the pressure detection element and the data interface; Wherein, a second threaded hole and a mounting hole are provided on a side of the mounting seat away from the pressure detecting member.

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