High-precision self-diagnosis intelligent pressure transmitter

Abstract

The invention provides a high-precision self-diagnosis intelligent pressure transmitter, and belongs to the technical field of pressure transmitters. Comprising a pressure transmitting main body piece, a normal pressure calibration piece is installed on the pressure transmitting main body piece, and a lifting switching piece is installed on the normal pressure calibration piece; the lifting switching piece is used for calibrating the zero position of the pressure transmitting main body piece; the normal pressure calibration piece is used for protecting the pressure transmitting main body piece; a diaphragm attaching piece is mounted on the lifting switching piece; and the diaphragm attaching piece is used for attaching the pressure transmitting main body piece. The lifting switching piece is matched with the normal-pressure calibration piece, so that a worker can quickly calibrate the zero position of the pressure transmitter body conveniently, the lifting switching piece capable of lifting can be used for blocking the protective shell, and it can be guaranteed that leakage does not occur during zero position calibration; the invention aims to solve the problem that the existing pressure transmitter is inconvenient to carry out zero calibration without dismounting the pressure transmitter and is also inconvenient to self-calibrate the precision of the pressure transmitter.

Description

Technical Field

[0001] The invention relates to the technical field of pressure transmitters, and in particular to a high-precision self-diagnostic intelligent pressure transmitter. Background Art

[0002] The main principle of the pressure transmitter is to use pressure to cause the measuring diaphragm to displace, and the displacement is proportional to the pressure difference. This principle is used to detect pressure and output signals. Pressure transmitters are widely used in fields such as pressure tanks or pipelines. The measurement accuracy of pressure transmitters directly affects production safety. The current pressure transmitters are not convenient for zero-position calibration without disassembling the pressure transmitter, and are also not convenient for self-calibration of the pressure transmitter accuracy. They require manual disassembly and tedious inspection. At the same time, the diaphragm is easily deformed under pressure during actual use, which is not convenient for self-inspection using air pressure. The diaphragm surface is deformed and has many rust impurities, which will result in poor precision control. Frequent daily inspections have low efficiency and are not convenient for quick cleaning of the diaphragm, which affects the service life of the diaphragm. Therefore, the present application provides a high-precision self-diagnostic intelligent pressure transmitter to meet the needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-precision self-diagnostic intelligent pressure transmitter to solve the problem that the existing pressure transmitter is not convenient for zero-point calibration without disassembling the pressure transmitter, and is also not convenient for self-calibration of the pressure transmitter accuracy, and requires manual disassembly and tedious inspection.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A high-precision self-diagnostic intelligent pressure transmitter comprises a pressure transmitter main body, a normal pressure calibration component is installed on the pressure transmitter main body, a lifting and switching component is installed on the normal pressure calibration component; the lifting and switching component is used to calibrate the zero position of the pressure transmitter main body; the normal pressure calibration component is used to protect the pressure transmitter main body; a diaphragm fitting component is installed on the lifting and switching component; the diaphragm fitting component is used to fit the pressure transmitter main body; a pressure calibration component is installed on the lifting and switching component; the pressure calibration component is used to test the accuracy of the pressure transmitter main body; a deformation detection component is installed on the diaphragm fitting component; the deformation detection component is used to detect the deformation of the pressure transmitter main body; a locking protective component is installed on the pressure transmitter main body; the pressure transmitter main body comprises: a pressure transmitter main body and a pressure transmitter diaphragm, a pressure transmitter diaphragm is installed at the bottom of the pressure transmitter main body, and a corrosion-resistant coating is provided on the surface of the pressure transmitter diaphragm.

[0006] Optionally, the locking protective member includes a lower pressure ring threadedly connected to the pressure transmitter body; a rotating circle is rotatably installed on the lower pressure ring; a lower pressure shaft is fixedly installed at the bottom of the rotating circle; the lower pressure shaft is seal-inserted on the connecting flange; and the end of the lower pressure shaft is used to squeeze the lifting and lowering switching piece.

[0007] Optionally, the lifting and switching member further comprises a rubber buffer ring fixedly mounted on the bottom of the blocking block; the rubber buffer ring is used to reduce the liquid pressure when the blocking block is separated from the blocking sealing ring.

[0008] Optionally, it is characterized in that the pressure transmitter main body also includes a connecting flange fixedly installed at the bottom of the pressure transmitter body; an upper electromagnet is fixedly embedded at the bottom of the connecting flange.

[0009] Optionally, the lifting and switching component includes a lifting and switching piece slidably mounted on the protective shell; a circle of through holes is provided on the lifting and switching piece; the circle of through holes provided on the lifting and switching piece is used for pressure conduction; a blocking block is fixedly mounted on the bottom of the lifting and switching piece; the blocking block is used to block the closed ring; magnetic suction rings are fixedly mounted on the upper and lower sides of the lifting and switching piece; the two magnetic suction rings are respectively aligned with the lower electromagnet and the upper electromagnet; centering positioning springs are fixedly mounted on both sides of the lifting and switching piece; the upper end of the centering positioning spring is attached to the bottom of the connecting flange; the lower end of the centering positioning spring is attached to the inner side of the protective shell; the two centering positioning springs are used to squeeze and control the lifting and switching piece to be located in the middle of the protective shell.

[0010] Optionally, the deformation detection part includes a connecting pipe fixedly mounted on a closed mounting plate; the lower section of the connecting pipe is a hose structure; the top of the connecting pipe is a threaded pipe structure; a pressure-regulating connecting pipe is threadedly connected to the threaded pipe at the top of the connecting pipe; a pressure-regulating pipe is installed on the pressure-regulating connecting pipe; an adjusting threaded rod is threadedly connected to the pressure-regulating pipe; a handwheel is provided on the adjusting threaded rod; a piston is rotatably mounted on the end of the adjusting threaded rod; the piston is sleeved inside the pressure-regulating pipe; and the piston is used for moving suction.

[0011] Optionally, the normal pressure calibration component includes a protective shell fixedly mounted on the bottom of the connecting flange; a lower electromagnet is fixedly embedded on the inner side of the protective shell; the lower electromagnet is aligned with the upper electromagnet; a closed ring is fixedly mounted on the protective shell; and the inner side of the closed ring is a slope structure.

[0012] Optionally, the diaphragm fitting includes a closed mounting plate fixedly mounted on the top of the lifting and switching piece; a rubber sealing piece is fixedly mounted on the closed mounting plate; a fitting piece is fixedly mounted on the closed mounting plate; the surface shape of the fitting piece is the same as that of the pressure transmitter diaphragm; the fitting piece is used to fit the pressure transmitter diaphragm; a detection through hole is provided on the fitting piece; a gap is provided between the lifting and switching piece and the closed mounting plate; a calibration electromagnet is fixedly mounted on the bottom of the closed mounting plate; the detection through hole is used to draw air pressure.

[0013] Optionally, the pressure calibration component includes an extrusion calibration shaft slidably mounted on the lifting and lowering switching piece; the top of the extrusion calibration shaft is an arc-shaped structure; the top of the extrusion calibration shaft is used to insert into the detection through hole; a magnetic connection disk is fixedly mounted on the extrusion calibration shaft; a circle of through holes is provided on the magnetic connection disk; a magnetic upward moving ring is fixedly mounted on the magnetic connection disk; the magnetic upward moving ring is used to adsorb the calibration electromagnet; the extrusion calibration shaft is used to extrude the pressure transmitter diaphragm.

[0014] Optionally, the pressure calibration component also includes a reset spring sleeved on the bottom of the extrusion calibration shaft; one end of the reset spring is fixedly installed on the inner side of the lifting and lowering switching piece; and the other end of the reset spring is fixedly installed on the inner side of the extrusion calibration shaft.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above scheme, the use of a lifting switching component in conjunction with a normal pressure calibration component can facilitate the staff to quickly calibrate the zero position of the pressure transmitter body. The lifting switching piece that can be raised and lowered can be used to seal the protective shell, which can ensure that no leakage occurs during zero-position calibration. At the same time, this structure does not need to disassemble the pressure transmitter body for zero-position calibration, which is more flexible and accurate and avoids tedious operations.

[0017] By adopting the deformation detection part, the deformation detection work can be carried out on the pressure transmitter diaphragm, which can prevent the impurities or rust protrusions on the surface of the pressure transmitter diaphragm from being undetected. This structure utilizes the surface shape of the bonding sheet to be the same as the pressure transmitter diaphragm, and can detect the convex deformation or concave deformation on the surface of the pressure transmitter diaphragm. The concave can be detected by negative pressure without disassembling the pressure transmitter body. The detection is quick and efficient. At the same time, the use of the diaphragm bonding part can facilitate the flushing and cleaning of the surface of the pressure transmitter diaphragm, and the operation is simple.

[0018] By adopting a pressure calibration component, the accuracy of the pressure transmitter body can be further detected by applying a standard pressure stroke to the pressure transmitter diaphragm. This structure can facilitate the self-diagnosis and correction of the pressure transmitter body by setting a pressure detection and calibration structure. This structure is simple to operate and can further determine the accuracy of pressure detection of the pressure transmitter body when under pressure.

[0019] By adopting the locking protective part, the position of the limit lifting and lowering switching part can be realized. During the long-term sealing work of the protective shell, the sealing and anti-leakage effect can be guaranteed, and leakage caused by factors such as power failure can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0021] Figure 1 It is a three-dimensional structural diagram of a high-precision self-diagnostic intelligent pressure transmitter;

[0022] Figure 2 It is a schematic diagram of the bottom structure of a high-precision self-diagnostic intelligent pressure transmitter;

[0023] Figure 3 It is a cross-sectional view of the internal structure of a high-precision self-diagnostic intelligent pressure transmitter;

[0024] Figure 4 This is a schematic diagram of the structure of the pressure transmitter main body;

[0025] Figure 5 This is a schematic diagram of the structure of the atmospheric pressure calibration component;

[0026] Figure 6 It is a schematic diagram of the lifting and switching component structure;

[0027] Figure 7 It is a schematic diagram of the structure of the diaphragm fitting;

[0028] Figure 8 for Figure 3 A magnified view of the structure of the middle B region;

[0029] Fig. 9 It is a structural schematic diagram of a deformation detection component;

[0030] Fig.10 for Figure 3 A magnified view of the structure of the middle C region;

[0031] Fig.11 It is a schematic diagram of the locking guard structure.

[0032] Reference numerals:

[0033] 1. Pressure transmitter main body; 101. Pressure transmitter main body; 102. Pressure transmitter diaphragm; 103. Connecting flange; 104. Upper electromagnet; 2. Normal pressure calibration component; 201. Protective shell; 202. Lower electromagnet; 203. Closed ring; 3. Lifting switch component; 301. Lifting switch piece; 302. Blocking block; 3011. Magnetic ring; 303. Centering spring; 304. Rubber buffer ring; 4. Diaphragm fitting component; 401. Closed mounting plate; 402. Rubber sealing sheet; 403, fitting sheet; 4031, detection through hole; 404, calibration electromagnet; 5, pressure calibration piece; 501, extrusion calibration shaft; 502, magnetic connection plate; 503, magnetic upward moving ring; 504, reset spring; 6, deformation detection piece; 601, connecting pipe; 602, pressure regulating connecting pipe; 603, pressure regulating pipe; 604, piston; 605, adjusting threaded rod; 7, locking protective piece; 701, lower pressure ring; 702, rotating circle; 703, lower pressure shaft.

[0034] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0035] The following is a detailed description of a high-precision self-diagnostic intelligent pressure transmitter provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0036] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0037] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0038] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0039] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0040] like Figure 1 and Fig.11 As shown, an embodiment of the present invention provides a high-precision self-diagnostic intelligent pressure transmitter, including a pressure transmitter main body 1, a normal pressure calibration component 2 is installed on the pressure transmitter main body 1, and a lifting switch component 3 is installed on the normal pressure calibration component 2; the lifting switch component 3 is used to calibrate the zero position of the pressure transmitter main body 1; the normal pressure calibration component 2 is used to protect the pressure transmitter main body 1; a diaphragm fitting component 4 is installed on the lifting switch component 3; the diaphragm fitting component 4 is used to fit the pressure transmitter main body 1; the lifting switch component 3 is installed with a pressure Force calibration part 5; pressure calibration part 5 is used to test the accuracy of pressure transmitter main part 1; deformation detection part 6 is installed on diaphragm fitting part 4; deformation detection part 6 is used to detect deformation of pressure transmitter main part 1; locking protection part 7 is installed on pressure transmitter main part 1; pressure transmitter main part 1 comprises: pressure transmitter main body 101 and pressure transmitter diaphragm 102, pressure transmitter diaphragm 102 is installed on the bottom of pressure transmitter main body 101, and the surface of pressure transmitter diaphragm 102 is provided with corrosion-resistant coating.

[0041] like Figures 4 to 6As shown, the pressure transmitter main body 1 also includes a connecting flange 103 fixedly mounted at the bottom of the pressure transmitter main body 101; an upper electromagnet 104 is fixedly embedded at the bottom of the connecting flange 103; the normal pressure calibration component 2 includes a protective shell 201 fixedly mounted at the bottom of the connecting flange 103; a lower electromagnet 202 is fixedly embedded inside the protective shell 201; the lower electromagnet 202 is aligned with the upper electromagnet 104; a closed ring 203 is fixedly mounted on the protective shell 201; the inner side of the closed ring 203 is an inclined structure; the lifting switch Component 3 includes a lifting and switching piece 301 slidably mounted on the protective shell 201; a circle of through holes is provided on the lifting and switching piece 301; the circle of through holes provided on the lifting and switching piece 301 is used for pressure conduction; a blocking block 302 is fixedly installed at the bottom of the lifting and switching piece 301; the blocking block 302 is used to block the closed ring 203; magnetic suction rings 3011 are fixedly installed on the upper and lower sides of the lifting and switching piece 301; the two magnetic suction rings 3011 are respectively aligned with the lower electromagnet 202 and the upper electromagnet 104; the lifting and switching piece 301 The two sides are respectively fixed with centering springs 303; the end of the upper centering spring 303 is attached to the bottom of the connecting flange 103; the end of the lower centering spring 303 is attached to the inner side of the protective shell 201; the two centering springs 303 are used to squeeze and control the lifting and lowering switching piece 301 to be located in the middle of the protective shell 201; the use of the lifting and lowering switching piece 3 in conjunction with the normal pressure calibration piece 2 can facilitate the staff to quickly calibrate the zero position of the pressure transmitter body 101, and the use of the lifting and lowering switching piece 301 that can be lifted and lowered can be used to block the protective shell 201, which can ensure that no leakage occurs during the zero position calibration. At the same time, the structure does not need to disassemble the pressure transmitter body 101 for zero position calibration, which is more flexible and accurate, avoiding cumbersome operations, and is also direct and fast through magnetic control. The sealing ring 203 is sealed by the sealing block 302. At this time, the pressure vessel is isolated from the pressure transmitter body 101, and the pressure transmitter diaphragm 102 no longer bears the pressure of the pressure vessel. It is observed whether the pressure transmitter body 101 shows the zero position at this time.

[0042] like Figure 6 As shown, the lifting and switching member 3 also includes a rubber buffer ring 304 fixedly installed at the bottom of the blocking block 302; the rubber buffer ring 304 is used to reduce the liquid pressure when the blocking block 302 is separated from the blocking closure ring 203; the rubber buffer ring 304 can assist in reducing the dehumidification pressure when the liquid is circulating, and prevent the pressure transmitter diaphragm 102 from being damaged and deformed by the instantaneous hydraulic impact. The flexible structure of the rubber buffer ring 304 does not affect the liquid circulation and reduces the hydraulic impact at the same time. The pressure regulating connecting pipe 602 is reinstalled on the connecting pipe 601. After the lower electromagnet 202 is powered off, the lifting and switching piece 301 is squeezed by the center positioning spring 303 and reset. At this time, the rubber buffer ring 304 is also driven to move up. When the liquid in the pressure vessel flows into the protective shell 201, it can be blocked and buffered by the rubber buffer ring 304.

[0043] like Figures 4 to 9 As shown, the diaphragm fitting 4 includes a closed mounting plate 401 fixedly mounted on the top of the lifting switching plate 301; a rubber sealing plate 402 is fixedly mounted on the closed mounting plate 401; a fitting plate 403 is fixedly mounted on the closed mounting plate 401; the surface shape of the fitting plate 403 is the same as that of the pressure transmitter diaphragm 102; the fitting plate 403 is used to fit the pressure transmitter diaphragm 102; a detection through hole 4031 is provided on the fitting plate 403; a gap is provided between the lifting switching plate 301 and the closed mounting plate 401; a calibration electromagnet 404 is fixedly mounted on the bottom of the closed mounting plate 401; the detection through hole 4031 is used to draw Suction pressure; the deformation detection member 6 comprises a connecting pipe 601 fixedly mounted on the closed mounting plate 401; the lower section of the connecting pipe 601 is a hose structure; the top of the connecting pipe 601 is a threaded pipe structure; a pressure regulating connecting pipe 602 is threadedly connected to the threaded pipe at the top of the connecting pipe 601; a pressure regulating pipe 603 is installed on the pressure regulating connecting pipe 602; an adjusting threaded rod 605 is threadedly connected to the pressure regulating pipe 603; a hand wheel is provided on the adjusting threaded rod 605; a piston 604 is rotatably mounted on the end of the adjusting threaded rod 605; the piston 604 is sleeved inside the pressure regulating pipe 603; the piston 604 is used for moving suction; the deformation detection member 6 is adopted , the deformation detection work of the pressure transmitter diaphragm 102 can be carried out, and the impurities or rust protrusions on the surface of the pressure transmitter diaphragm 102 can be prevented from being discovered. The surface shape of the bonding sheet 403 is the same as that of the pressure transmitter diaphragm 102, and the convex deformation or concave deformation on the surface of the pressure transmitter diaphragm 102 can be detected. The concave deformation can be detected by using negative pressure, and there is no need to disassemble the pressure transmitter body 101. The detection is fast and efficient. At the same time, the diaphragm bonding piece 4 can be used to flush and clean the surface of the pressure transmitter diaphragm 102. The operation is simple, and the bonding sheet 403 is controlled to be attached to the pressure transmitter. Diaphragm 102, if there are rust protrusions, impurity protrusions or deformed protrusions on the bottom of the pressure transmitter diaphragm 102, the pressure transmitter diaphragm 102 can be squeezed upward under the pressure of the bonding sheet 403, and the pressure transmitter body 101 will produce excessive parameter changes. If there is a depression at the bottom of the pressure transmitter diaphragm 102, the piston 604 is driven to move outward by rotating the adjusting threaded rod 605 to generate a suction force. At this time, under the action of negative pressure, the depressed position of the pressure transmitter diaphragm 102 will be sucked downward to fit the bonding sheet 403, and the pressure transmitter body 101 will also produce a large reading deviation.

[0044] like Figure 4 , Figure 7 and Figure 8As shown, the pressure calibration component 5 includes an extrusion calibration shaft 501 slidably mounted on the lifting switching piece 301; the top of the extrusion calibration shaft 501 is an arc-shaped structure; the top of the extrusion calibration shaft 501 is used to insert the detection through hole 4031; a magnetic connection disk 502 is fixedly mounted on the extrusion calibration shaft 501; a circle of through holes is provided on the magnetic connection disk 502; a magnetic upward moving ring 503 is fixedly mounted on the magnetic connection disk 502; the magnetic upward moving ring 503 is used to absorb the calibration electromagnet 404; the extrusion calibration shaft 501 is used to squeeze the pressure transmitter diaphragm 102; the pressure calibration component 5 also includes a sleeve connected to the extrusion calibration shaft 50 1 The reset spring 504 at the bottom; the end of the reset spring 504 is fixedly mounted on the inner side of the lifting switch sheet 301; the other end of the reset spring 504 is fixedly mounted on the inner side of the extrusion calibration shaft 501; the pressure calibration component 5 can be further used to detect the accuracy of the pressure transmitter body 101 by applying a standard pressure stroke to the pressure transmitter diaphragm 102. This structure can facilitate the self-diagnosis and correction of the pressure transmitter body 101 by setting a pressure detection and calibration structure. This structure is simple to operate and can further know the accuracy of the pressure detection of the pressure transmitter body 101 when it is under pressure.

[0045] like Figure 3 and Fig.11 As shown, the locking protective member 7 includes a lower pressure ring 701 threadedly connected to the pressure transmitter body 101; a rotating circle 702 is rotatably installed on the lower pressure ring 701; a lower pressure shaft 703 is fixedly installed at the bottom of the rotating circle 702; the lower pressure shaft 703 is sealingly plugged into the connecting flange 103; the end of the lower pressure shaft 703 is used to squeeze the lifting and switching piece 301. The locking protective member 7 is used to limit the position of the lifting and switching piece 3. During the long-term sealing operation of the protective shell 201, the sealing and anti-leakage effect can be guaranteed, and leakage caused by factors such as power failure can be avoided. The present structure is simple and the sealing and protective effect is good.

[0046] The working principle provided by the present invention is that first, the connecting flange 103 is installed on the pressure vessel by bolts. When the pressure transmitter body 101 needs to be zero-calibrated, the lower electromagnet 202 is electromagnetically attracted to the magnetic attraction ring 3011 below. At this time, the lifting and lowering switching piece 301 is driven to move downward, and the sealing block 302 is used to seal and fit the closed ring 203. When the sealing block 302 is sealed and fits the closed ring 203, if it is necessary to keep it closed for a long time, the lower pressure ring 701 can be rotated to drive the lower pressure shaft 703 to fit the limit closed installation disk 401, thereby ensuring that the sealing block 302 is sealed and fits the closed ring 203. At this time, the pressure vessel is isolated from the pressure transmitter body 101. At this time, the pressure transmitter diaphragm 102 no longer bears the pressure of the pressure vessel. The deformation detection member 6 can be used to suck out part of the residual liquid in the protective shell 201, and the pressure regulating connecting pipe 602 is removed. The pressure inside the protective shell 201 is restored to normal pressure. It is observed whether the pressure transmitter body 101 displays the zero position at this time. By removing the pressure regulating connecting pipe 602 and connecting the connecting pipe 601 to an external liquid pump, the same liquid as the pressure valve container can be supplied and sprayed from the detection through hole 4031 to flush the pressure transmitter diaphragm 102 for self-cleaning;

[0047] When it is necessary to detect the surface of the pressure transmitter diaphragm 102, the upper electromagnet 104 is energized to magnetically attract the upper magnetic circle 3011. At this time, the lifting and switching sheet 301 moves upward, which can drive the bonding sheet 403 to stick to the pressure transmitter diaphragm 102. At this time, the rubber sealing sheet 402 is also sealed at the bottom edge of the pressure transmitter body 101. If there are rust protrusions, impurity protrusions or protrusion deformations at the bottom of the pressure transmitter diaphragm 102, the pressure transmitter diaphragm 102 can be squeezed upward under the squeezing of the bonding sheet 403. At this time, the pressure transmitter body 101 will produce excessive parameter changes. Correspondingly, if there is a depression at the bottom of the pressure transmitter diaphragm 102, the piston 604 is driven to move outward by rotating the adjusting threaded rod 605 to generate a suction force. The surface shape of the bonding sheet 403 is the same as that of the pressure transmitter diaphragm 102. At this time, under the action of negative pressure, the depressed position of the pressure transmitter diaphragm 102 will be sucked upward The lower bonding piece 403 is attached to the pressure transmitter diaphragm 102. At this time, the pressure transmitter body 101 will also produce a large reading deviation. Only when the pressure transmitter diaphragm 102 is in the standard state, the reading of the pressure transmitter body 101 is the standard value. When the lower electromagnet 202 and the upper electromagnet 104 are both in the power-off state, the lifting and lowering switching piece 301 is located in the center of the protective shell 201. At this time, the pressure transmitter body 101 normally detects the pressure value of the pressure vessel; when the bonding piece 403 is attached to the pressure transmitter diaphragm 102, the calibration electromagnet 404 is energized to adsorb the magnetic upward moving ring 503. At this time, the magnetic upward moving ring 503 can be driven to drive the extrusion calibration shaft 501 to move upward. The upward movement stroke of the extrusion calibration shaft 501 is always consistent. The extrusion calibration shaft 501 moves upward through the detection through hole 4031, and then squeezes the pressure transmitter diaphragm 102. At this time, it is sufficient to observe whether the displayed value of the pressure transmitter body 101 corresponds to the standard value.

[0048] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A high-precision self-diagnostic intelligent pressure transmitter, comprising a pressure transmitter main body, on which a normal pressure calibration component is installed, characterized in that: The normal pressure calibration component is equipped with a lifting and switching component; the lifting and switching component is used to calibrate the zero position of the pressure transmitter main component; the normal pressure calibration component is used to protect the pressure transmitter main component; A diaphragm fitting part is installed on the lifting and switching part; the diaphragm fitting part is used to fit the pressure transmitter main part; A pressure calibration component is installed on the lifting and switching component; the pressure calibration component is used to test the accuracy of the pressure transmitter main component; A deformation detection component is installed on the diaphragm fitting; The deformation detection member is used to detect the deformation of the pressure transmitter main body; A locking protective part is installed on the pressure transmitter main body; The pressure transmitter main body comprises: a pressure transmitter body and a pressure transmitter diaphragm. The pressure transmitter diaphragm is installed at the bottom of the pressure transmitter body, and a corrosion-resistant coating is provided on the surface of the pressure transmitter diaphragm.

2. The high-precision self-diagnostic intelligent pressure transmitter according to claim 1 is characterized in that: The pressure transmitter main body also includes a connecting flange fixedly installed at the bottom of the pressure transmitter main body; an upper electromagnet is fixedly embedded at the bottom of the connecting flange.

3. The high-precision self-diagnostic intelligent pressure transmitter according to claim 2 is characterized in that: The normal pressure calibration part includes a protective shell fixedly installed at the bottom of the connecting flange; a lower electromagnet is fixedly embedded inside the protective shell; the lower electromagnet is aligned with the upper electromagnet; a closed ring is fixedly installed on the protective shell; the inner side of the closed ring is a slope structure.

4. The high-precision self-diagnostic intelligent pressure transmitter according to claim 3 is characterized in that: The lifting and switching component includes a lifting and switching piece slidably mounted on the protective shell; a circle of through holes is provided on the lifting and switching piece; the circle of through holes provided on the lifting and switching piece is used for pressure conduction; a blocking block is fixedly installed at the bottom of the lifting and switching piece; the blocking block is used to block the closed ring; magnetic suction rings are fixedly installed on the upper and lower sides of the lifting and switching piece; the two magnetic suction rings are respectively aligned with the lower electromagnet and the upper electromagnet; centering positioning springs are fixedly installed on both sides of the lifting and switching piece; the upper end of the centering positioning spring is attached to the bottom of the connecting flange; the lower end of the centering positioning spring is attached to the inner side of the protective shell; the two centering positioning springs are used to squeeze and control the lifting and switching piece to be located in the middle of the protective shell.

5. The high-precision self-diagnostic intelligent pressure transmitter according to claim 4 is characterized in that: The lifting and lowering switching member also includes a rubber buffer ring fixedly mounted on the bottom of the blocking block; the rubber buffer ring is used to reduce the liquid pressure when the blocking block is separated from the blocking sealing ring.

6. The high-precision self-diagnostic intelligent pressure transmitter according to claim 5 is characterized in that: The diaphragm fitting comprises a closed mounting plate fixedly mounted on the top of the lifting and switching piece; a rubber sealing piece is fixedly mounted on the closed mounting plate; a fitting piece is fixedly mounted on the closed mounting plate; the surface shape of the fitting piece is the same as that of the pressure transmitter diaphragm; the fitting piece is used to fit the pressure transmitter diaphragm; a detection through hole is provided on the fitting piece; a gap is provided between the lifting and switching piece and the closed mounting plate; a calibration electromagnet is fixedly mounted on the bottom of the closed mounting plate; the detection through hole is used to draw air pressure.

7. The high-precision self-diagnostic intelligent pressure transmitter according to claim 6 is characterized in that: The pressure calibration component includes an extrusion calibration shaft slidably mounted on a lifting and lowering switching piece; the top of the extrusion calibration shaft is an arc-shaped structure; the top of the extrusion calibration shaft is used to insert a detection through hole; a magnetic connection disk is fixedly mounted on the extrusion calibration shaft; a circle of through holes is provided on the magnetic connection disk; a magnetic upward moving ring is fixedly mounted on the magnetic connection disk; the magnetic upward moving ring is used to adsorb a calibration electromagnet; the extrusion calibration shaft is used to extrude the pressure transmitter diaphragm.

8. The high-precision self-diagnostic intelligent pressure transmitter according to claim 7 is characterized in that: The pressure calibration component also includes a reset spring sleeved on the bottom of the extrusion calibration shaft; the end of the reset spring is fixedly installed on the inner side of the lifting and lowering switching piece; the other end of the reset spring is fixedly installed on the inner side of the extrusion calibration shaft.

9. The high-precision self-diagnostic intelligent pressure transmitter according to claim 6, characterized in that: The deformation detection part includes a connecting pipe fixedly mounted on a closed mounting plate; the lower section of the connecting pipe is a hose structure; the top of the connecting pipe is a threaded pipe structure; a pressure-regulating connecting pipe is threadedly connected to the threaded pipe at the top of the connecting pipe; a pressure-regulating pipe is installed on the pressure-regulating connecting pipe; an adjusting threaded rod is threadedly connected to the pressure-regulating pipe; a handwheel is provided on the adjusting threaded rod; a piston is rotatably mounted on the end of the adjusting threaded rod; the piston is sleeved inside the pressure-regulating pipe; and the piston is used for moving suction.

10. The high-precision self-diagnostic intelligent pressure transmitter according to claim 4, characterized in that: The locking protective member includes a lower pressure ring threadedly connected to the pressure transmitter body; a rotating circle is rotatably installed on the lower pressure ring; a lower pressure shaft is fixedly installed at the bottom of the rotating circle; the lower pressure shaft is sealed and plugged into the connecting flange; the end of the lower pressure shaft is used to squeeze the lifting and lowering switching piece.

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