Differential pressure sensor isolation diaphragm shaping device and shaping method

Abstract

The invention relates to a differential pressure sensor isolation diaphragm shaping device and a shaping method. The device comprises a workbench; the clamping mechanism comprises a plurality of clamping blocks and at least one clamping driving part, the clamping blocks are linearly distributed in the length direction of the workbench, the clamping blocks are arranged on the workbench in a sliding mode, a clamping space is formed between every two adjacent clamping blocks, and the clamping spaces are used for installing differential pressure sensors; the clamping driving part is used for driving the clamping block to move in the length direction of the workbench so as to reduce the clamping space and enable the clamping block to clamp and fix the differential pressure sensor. And each clamping block is provided with an air pressure cavity, and the air pressure cavities are used for introducing high-pressure gas so as to shape the differential pressure sensor diaphragm in the clamping space. High-pressure gas is introduced into the air pressure cavity of the clamping block, the air pressure in the air pressure cavity is increased, and the high-pressure gas extrudes the diaphragm of the differential pressure sensor to enable the diaphragm to be flat and deformed, so that the original flatness and waveform of the diaphragm are recovered, and the diaphragm reaches the consistent rigidity characteristic.

Description

Technical Field

[0001] The invention relates to the technical field of shaping tooling, and in particular to a shaping device and a shaping method for an isolation diaphragm of a differential pressure sensor. Background Art

[0002] Pressure transmitter is an instrument widely used in various industrial automatic control environments. It can be used to measure the pressure, flow and liquid level of various media. The differential pressure sensor is the core component of the pressure transmitter, including the isolation diaphragm, membrane body, pressure sensing chip, data acquisition board, etc. It can be used to measure the pressure, flow and liquid level of various media. The isolation diaphragm is one of the core components of the differential pressure sensor. The mechanical properties of the diaphragm are directly related to the stability and accuracy of the sensor.

[0003] At present, when the isolation diaphragm of the differential pressure sensor is welded to the membrane body, local high temperature will be generated around the weld, causing thermal stress in the diaphragm. The stress will cause the diaphragm to deform corrugated, and the deformation may affect the sensitivity or linearity of the diaphragm. It needs to be corrected to the ideal shape to make the stiffness characteristics of the diaphragms on both sides of the differential pressure sensor consistent, to ensure the smooth filling of the pressure transmission medium inside the sensor, and then to ensure the temperature compensation of the sensor. Therefore, after the isolation diaphragm is welded, effective measures need to be taken to reduce the welding stress and correct the diaphragm corrugation deformation. Summary of the invention

[0004] In view of the shortcomings of the prior art described above, one of the purposes of the present invention is to provide a differential pressure sensor isolation diaphragm shaping device. The second purpose is to provide a differential pressure sensor isolation diaphragm shaping method. The present application is used to solve the problem that the isolation diaphragm of the differential pressure sensor has thermal stress and thermal deformation during the welding process to the mold body, resulting in inconsistent stiffness characteristics of the isolation diaphragm.

[0005] In order to achieve the above-mentioned object and other related objects, the present invention provides a differential pressure sensor isolation diaphragm shaping device, comprising:

[0006] Workbench;

[0007] A clamping mechanism is arranged on the workbench, the clamping mechanism comprises a plurality of clamping blocks and at least one clamping driving component, the plurality of clamping blocks are linearly distributed along the length direction of the workbench, the clamping blocks are slidably arranged on the workbench, a clamping space is arranged between two adjacent clamping blocks, the clamping space is used to install a differential pressure sensor, and the clamping driving component is used to drive the clamping blocks to move along the length direction of the workbench to reduce the clamping space so that the clamping blocks clamp and fix the differential pressure sensor;

[0008] Each of the clamping blocks is provided with an air pressure cavity, and the air pressure cavity is used to pass high-pressure gas to shape the differential pressure sensor diaphragm in the clamping space;

[0009] The workbench is provided with a supporting assembly, the supporting assembly is provided with a sliding rod, and the clamping block is slidably arranged on the sliding rod.

[0010] Optionally, the support assembly comprises a first support block, a second support block and a third support block which are linearly arranged along the length direction of the workbench, and two sliding bars are provided on the support assembly.

[0011] Optionally, the clamping mechanism comprises two symmetrically arranged clamping drive components, and the two clamping drive components are respectively arranged on the first supporting block and the third supporting block.

[0012] Optionally, a hydraulic pump is further included, the clamping drive component is a hydraulic cylinder, and the hydraulic pump is used to provide power for the clamping drive component.

[0013] Optionally, a gas channel is provided on the clamping block, the gas channel is communicated with the air pressure chamber, and the gas channel is externally connected to a air pressure joint.

[0014] Optionally, a gas booster pump is further included, which is connected to the air pressure connector through a pipeline, and the gas booster pump is used to introduce gas into the air pressure chamber.

[0015] Optionally, the pipeline includes a main pipeline and multiple branch pipelines, a gas distribution valve seat is provided between the main pipeline and the branch pipelines, the multiple branch pipelines are respectively connected to the air pressure joints of the clamping block, and the multiple branch pipelines are all connected to the gas distribution valve seat, and an air pressure control valve is provided on the main pipeline, and the air pressure control valve is used to control the on-off of the gas booster pump and the gas distribution valve seat.

[0016] Optionally, a hydraulic control valve is provided between the clamping drive component and the hydraulic pump, and the hydraulic control valve is used to control the on-off of the clamping drive component and the hydraulic pump.

[0017] Optionally, a control module is also included, which includes a control module, a hydraulic monitoring module and an air pressure monitoring module. The hydraulic monitoring module and the air pressure monitoring module are both electrically connected to the control module. The hydraulic monitoring module is used to monitor the hydraulic value of the clamping drive component, and the air pressure monitoring module is used to monitor the air pressure value of the main line.

[0018] A differential pressure sensor isolation diaphragm shaping method is applied to the differential pressure sensor isolation diaphragm shaping device as described above, the method comprising:

[0019] The method comprises:

[0020] Install the differential pressure sensor in the clamping space;

[0021] The control module controls the hydraulic control valve to open, and the hydraulic pump transmits power to the clamping drive component, so that the clamping drive component pushes the clamping block to move, so as to clamp and fix the differential pressure sensor;

[0022] The hydraulic signal of the clamping drive component is monitored by the hydraulic monitoring module, and the control module compares the hydraulic signal with the preset hydraulic pressure. When the hydraulic signal reaches the preset hydraulic pressure, the control module controls the opening of the hydraulic control valve to maintain the hydraulic value of the clamping drive component;

[0023] The control module controls the air pressure control valve to open, and the gas booster pump delivers high-pressure gas to the gas distribution valve seat. The high-pressure gas is distributed by the gas distribution valve seat and then delivered to the air pressure chamber.

[0024] The air pressure signal of the main pipeline is monitored by the air pressure monitoring module, and the control module compares the air pressure signal with the preset air pressure. When the air pressure signal reaches the preset air pressure, the control module controls the opening of the air pressure control valve to maintain the gas pressure in the air pressure chamber;

[0025] When the gas pressure in the air pressure chamber is maintained for a preset time, the control module controls the gas booster pump to stop delivering high-pressure gas and relieve the pressure in the air pressure chamber. After the pressure is relieved, the control module controls the hydraulic pump to stop power delivery and allows the hydraulic pressure to flow back into the hydraulic pump, reset the clamping drive component, and remove the differential pressure sensor.

[0026] As described above, the present invention has the following beneficial effects: the differential pressure sensor is installed in the clamping space, and the clamping block is driven to move by the clamping driving component to reduce the clamping space, thereby clamping and fixing the differential pressure sensor. The differential pressure sensor blocks the air pressure cavity of the clamping block to form a closed space. By introducing high-pressure gas into the air pressure cavity of the clamping block, the air pressure in the air pressure cavity increases, and the high-pressure gas squeezes the diaphragm of the differential pressure sensor to make it flat and deformed, thereby restoring the original flatness and waveform of the diaphragm of the differential pressure sensor, so that the diaphragms on both sides of the differential pressure sensor achieve consistent stiffness characteristics, which is beneficial to the filling of the pressure conduction medium of the differential pressure sensor, and ultimately improves the temperature compensation pass rate of the differential pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The schematic diagram of the structure of the differential pressure sensor isolation diaphragm shaping device in the embodiment of the present application is shown in the state where the protective cover is opened;

[0028] Figure 2 The schematic diagram of the structure of the differential pressure sensor isolation diaphragm shaping device in the embodiment of the present application is a closed protective cover;

[0029] Figure 3 The cross-sectional structure diagram showing the clamping state of the clamping component and the differential pressure sensor shown in the embodiment of the present application;

[0030] Figure 4 Shown is a flow chart of a differential pressure sensor isolation diaphragm shaping method according to an embodiment of the present application.

[0031] Description of Reference Numerals

[0032] Workbench 1, clamping mechanism 2, clamping block 201, air pressure chamber 201a, gas channel 201b, air pressure joint 201c, clamping drive component 202, support assembly 3, first support block 301, second support block 302, third support block 303, slide rod 4, hydraulic pump 5, gas booster pump 6, pipeline 7, main pipeline 701, branch pipeline 702, gas distribution valve seat 8, air pressure control valve 9, hydraulic control valve 10, control module 11, control module 1101, hydraulic monitoring module 1102, air pressure monitoring module 1103, protective cover 12. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0034] See also Figures 1 to 4 It should be noted that the diagrams provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than drawing according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complicated. The structure, proportion, size, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0035] Before describing the embodiments of the present invention in detail, the application environment of the present invention is described first. The technology of the present invention is mainly applied to the field of plastic tooling technology. The present invention is used to solve the problem that the isolation diaphragm of the differential pressure sensor has thermal stress and thermal deformation during welding to the mold body, resulting in inconsistent stiffness characteristics of the isolation diaphragm.

[0036] Please combine Figures 1 to 3 As shown, the present invention provides a differential pressure sensor isolation diaphragm shaping device.

[0037] In an exemplary embodiment of the present application, a differential pressure sensor isolation diaphragm shaping device includes: a workbench 1; a clamping mechanism 2, which is arranged on the workbench 1, and the clamping mechanism 2 includes a plurality of clamping blocks 201 and at least one clamping drive component 202, and the plurality of clamping blocks 201 are linearly distributed along the length direction of the workbench 1, and the clamping blocks 201 are slidably arranged on the workbench 1, and a clamping space is provided between two adjacent clamping blocks 201, and the clamping space is used to install a differential pressure sensor, and the clamping drive component 202 is used to drive the clamping block 201 to move along the length direction of the workbench 1 to reduce the clamping space so that the clamping block 201 clamps and fixes the differential pressure sensor; each clamping block 201 is provided with an air pressure chamber 201a, and the air pressure chamber 201a is used to pass high-pressure gas to shape the differential pressure sensor diaphragm in the clamping space.

[0038] In this embodiment, the differential pressure sensor is installed in the clamping space, and the clamping block 201 is driven to move by the clamping driving component 202 to reduce the clamping space, thereby clamping and fixing the differential pressure sensor. The differential pressure sensor blocks the air pressure cavity 201a of the clamping block 201 to form a closed space. By introducing high-pressure gas into the air pressure cavity 201a of the clamping block 201, the air pressure in the air pressure cavity 201a increases, and the high-pressure gas squeezes the diaphragm of the differential pressure sensor to make it flat and deformed, thereby restoring the original flatness and waveform of the diaphragm of the differential pressure sensor, so that the diaphragms on both sides of the differential pressure sensor have consistent stiffness characteristics, which is beneficial to the filling of the pressure conduction medium of the differential pressure sensor, and ultimately improves the temperature compensation pass rate of the differential pressure sensor.

[0039] Exemplarily, the clamping mechanism 2 includes 20 clamping blocks 201 and a clamping drive component 202. The 20 clamping blocks 201 are slidably arranged and linearly arranged on the workbench 1. The edge clamping blocks 201 on both sides are respectively provided with clamping drive components 202 and fixed blocks. After the differential pressure sensor is installed in the clamping space, the clamping drive component 202 pushes the clamping block 201 to move along the length direction of the workbench 1, and the fixed block blocks the movement of the edge clamping block 201 on the other side, thereby reducing the clamping space and clamping the differential pressure sensor on the workbench 1.

[0040] In another exemplary embodiment, the clamping mechanism 2 includes 20 clamping blocks 201 and two clamping drive components 202. The two clamping drive components 202 are respectively arranged at the positions of the edge clamping blocks 201. The two clamping drive components 202 push the clamping blocks 201 toward the center, thereby clamping and fixing the differential pressure sensor on the workbench 1.

[0041] In an exemplary embodiment of the present application, a support assembly 3 is disposed on the workbench 1 , a slide bar 4 is disposed on the support assembly 3 , and the clamping block 201 is slidably disposed on the slide bar 4 .

[0042] In this embodiment, the support component 3 is protruded and set on the workbench 1. By setting a slide bar 4 on the support component 3 and slidingly setting the clamping block 201 on the slide bar 4, the sliding guidance of the clamping block 201 is realized.

[0043] In an exemplary embodiment of the present application, the support assembly 3 includes a first support block 301 , a second support block 302 and a third support block 303 which are linearly arranged along the length direction of the workbench 1 , and two slide bars 4 are provided on the support assembly 3 .

[0044] In this embodiment, since the clamping mechanism 2 shown in the embodiment of the present application includes multiple clamping blocks 201, it is necessary to set a corresponding longer sliding rod 4. By setting the first support block 301, the second support block 302 and the third support block 303, the long sliding rod 4 can be supported, and the straightness of the sliding rod 4 can be better maintained; and by setting two sliding rods 4 on the supporting assembly 3, the clamping block 201 is slidably set on the two sliding rods 4, which can ensure that the clamping block 201 can slide smoothly on the sliding rod 4, and avoid the clamping block 201 from rotating between the sliding rod 4 during the movement.

[0045] In an exemplary embodiment of the present application, the clamping mechanism 2 includes two symmetrically arranged clamping drive components 202 , and the two clamping drive components 202 are respectively arranged on the first support block 301 and the third support block 303 .

[0046] In this embodiment, the clamping drive component 202 arranged on the first support block 301 and the third support block 303 pushes the clamping block 201 to move closer to the second support block 302, thereby reducing the clamping space, clamping and fixing the differential pressure sensor, and sealing the air pressure cavity 201a of the clamping block 201.

[0047] In an exemplary embodiment of the present application, a hydraulic pump 5 is further included. The clamping drive component 202 is a hydraulic cylinder. The hydraulic pump 5 is used to provide power for the clamping drive component 202 .

[0048] In this embodiment, the hydraulic cylinder can generate a large thrust and pull. The hydraulic pump 5 provides high-pressure oil, which can make the hydraulic cylinder easily push the clamping block 201 to clamp and fix the differential pressure sensor.

[0049] In an exemplary embodiment of the present application, a gas channel 201 b is provided on the clamping block 201 , the gas channel 201 b is communicated with the air pressure chamber 201 a , and the gas channel 201 b is externally connected to an air pressure connector 201 c .

[0050] In this embodiment, the air pressure connector 201c is connected to an external air source through a gas pipeline. The external air source is used to transport high-pressure gas into the air pressure chamber 201a. The high-pressure gas enters the air pressure chamber 201a through the gas pipeline and the gas channel 201b, and forms high pressure inside the air pressure chamber 201a, squeezing the isolation diaphragm of the differential pressure sensor in the clamping space, restoring the waveform of the isolation diaphragm, and achieving the purpose of shaping the isolation diaphragm of the differential pressure sensor.

[0051] In an exemplary embodiment of the present application, a gas booster pump 6 is further included. The gas booster pump 6 is connected to the air pressure connector 201c through a pipeline 7. The gas booster pump 6 is used to introduce gas into the air pressure chamber 201a.

[0052] In an exemplary embodiment of the present application, the pipeline 7 includes a main pipeline 701 and multiple branch pipelines 702, a gas distribution valve seat 8 is provided between the main pipeline 701 and the branch pipelines 702, the multiple branch pipelines 702 are respectively connected to the air pressure connector 201c of the clamping block 201, and the multiple branch pipelines 702 are all connected to the gas distribution valve seat 8, and an air pressure control valve 9 is provided on the main pipeline 701, and the air pressure control valve 9 is used to control the on-off of the gas booster pump 6 and the gas distribution valve seat 8.

[0053] In this embodiment, the air pressure control valve 9 is installed on the main pipeline 701, which can uniformly and accurately control the gas entering the entire pipeline 7 system. The gas distribution valve seat 8 distributes the gas of the main pipeline 701 to multiple branch pipelines 702, and each branch pipeline 702 is connected to a gas pressure connector 201c of a clamping block 201, so that each clamping block 201 can be independently controlled. This layout of the pipeline 7 is conducive to the expansion and upgrading of the system. When it is necessary to increase the number of clamping blocks 201 or change the layout of the clamping blocks 201, it is only necessary to add the corresponding branch pipeline 702 to the gas distribution valve seat 8 and connect it to the new clamping block 201 gas pressure connector 201c, without large-scale modification of the entire pipeline 7 system.

[0054] In an exemplary embodiment of the present application, a hydraulic control valve 10 is provided between the clamping drive component 202 and the hydraulic pump 5 , and the hydraulic control valve 10 is used to control the on-off of the clamping drive component 202 and the hydraulic pump 5 .

[0055] In this embodiment, by providing the hydraulic control valve 10, the action of the clamping drive component 202 can be accurately controlled to achieve accurate adjustment of the clamping force and the movement position. By controlling the opening of the valve, the flow and pressure of the hydraulic oil entering the hydraulic cylinder can be accurately controlled, so that the clamping drive component 202 can clamp or release at the required force and speed.

[0056] In an exemplary embodiment of the present application, a control module 11 is also included, and the control module 11 includes a control module 1101, a hydraulic monitoring module 1102 and an air pressure monitoring module 1103. The hydraulic monitoring module 1102 and the air pressure monitoring module 1103 are both electrically connected to the control module 1101. The hydraulic monitoring module 1102 is used to monitor the hydraulic value of the clamping drive component 202, and the air pressure monitoring module 1103 is used to monitor the air pressure value of the main line 701.

[0057] In this embodiment, the hydraulic monitoring module 1102 monitors the hydraulic value of the clamping drive component 202 in real time, and the air pressure monitoring module 1103 monitors the air pressure value of the main line 701 in real time. The control module 1101 can accurately grasp the operating status of the entire system by receiving these data. Both the pressure changes of the hydraulic system and the pressure fluctuations of the air pressure system can be monitored in time, providing a basis for subsequent precise control. Based on the hydraulic value fed back by the hydraulic monitoring module 1102, the control module 1101 can accurately adjust the hydraulic control valve 10, thereby achieving precise control of the clamping force of the clamping drive component 202. Through the monitoring of the air pressure value of the main line 701 by the air pressure monitoring module 1103, the control module 1101 can adjust the air pressure control valve 9 as needed to ensure that the air pressure of the main line 701 is stable within the set range, thereby ensuring that the shaping pressure of the differential pressure sensor isolation diaphragm is stable within the set range.

[0058] It is worth noting that the hydraulic pressure monitoring module 1102 and the air pressure monitoring module 1103 include but are not limited to using pressure sensors.

[0059] In yet another exemplary embodiment, a protective cover 12 is further included. When the device is working, the protective cover 12 can be closed to isolate the working space of the device to avoid safety accidents.

[0060] In another exemplary embodiment, an HMI human-machine interface is also included, and the operator can set relevant parameters through the HMI human-machine interface, including switching between manual and automatic modes, holding time, minimum shaping pressure, closing time of the protective cover 12, and switching of the workstation air intake method, etc.

[0061] The present application also proposes a method for shaping an isolation diaphragm of a differential pressure sensor.

[0062] See also Figure 4 , Figure 4The flowchart is a method for shaping an isolation diaphragm of a differential pressure sensor, which at least includes steps S110 to S160.

[0063] In step S110 , a differential pressure sensor is installed in the clamping space.

[0064] For example, before installing the differential pressure sensor and the clamping mechanism 2, the corresponding parameters are set through the HMI human-machine interface set on the device, including but not limited to the pressure holding time, the protective cover closing time, the minimum shaping air pressure, etc., to ensure that the shaping time and shaping air pressure can meet the waveform shaping recovery of the differential pressure sensor isolation die. Then the differential pressure sensor is clamped to the clamping space between the clamping blocks 201. After the clamping is completed, the working mode of the device can be switched to automatic. At this time, the working process of the device is controlled by the control module 1101.

[0065] In step S120, the control module 1101 controls the hydraulic control valve 10 to open, and the hydraulic pump 5 transmits power to the clamping drive component 202, so that the clamping drive component 202 pushes the clamping block 201 to move, so as to clamp and fix the differential pressure sensor.

[0066] Exemplarily, by pressing the clamping button of the starting device, the control module 1101 controls the hydraulic control valve 10 to open, and the hydraulic pump 5 transmits power to the clamping drive component 202, driving the clamping drive component 202 to push the clamping block 201 to move, so as to clamp and fix the differential pressure sensor, and seal the isolation diaphragm of the differential pressure sensor with the air pressure chamber 201a.

[0067] In step S130, the hydraulic signal of the clamping drive component 202 is monitored by the hydraulic monitoring module 1102, and the control module 1101 compares the hydraulic signal with the preset hydraulic pressure. When the hydraulic signal reaches the preset hydraulic pressure, the control module 1101 controls the opening of the hydraulic control valve 10 to maintain the hydraulic value of the clamping drive component 202.

[0068] Exemplarily, the hydraulic monitoring module 1102 monitors whether the hydraulic signal of the clamping drive component 202 reaches the preset hydraulic pressure, and maintains the current hydraulic pressure after reaching the preset hydraulic pressure until the shaping is completed, so as to ensure the airtightness of the differential pressure sensor isolation diaphragm and the air pressure chamber 201a, and avoid excessive clamping force to damage the differential pressure sensor.

[0069] In step S140, the control module 1101 controls the air pressure control valve 9 to open, and the gas booster pump 6 delivers high-pressure gas to the gas distribution valve seat 8. The high-pressure gas is distributed by the gas distribution valve seat 8 and then delivered to the air pressure chamber 201a.

[0070] Exemplarily, the shaping button of the start device is pressed, and the control module 1101 receives the shaping start signal, controls the air pressure control valve 9 to open, and the gas booster pump 6 delivers high-pressure gas to the air pressure chamber 201a, so that a high-pressure environment is formed in the air pressure chamber 201a, and squeezes the isolation diaphragm of the differential pressure sensor, thereby restoring the waveform of the isolation diaphragm.

[0071] In step S150, the air pressure signal of the main line 701 is monitored by the air pressure monitoring module 1103, and the control module 1101 compares the air pressure signal with the preset air pressure. When the air pressure signal reaches the preset air pressure, the control module 1101 controls the opening of the air pressure control valve 9 to maintain the gas pressure in the air pressure chamber 201a.

[0072] Exemplarily, the air pressure monitoring module 1103 monitors whether the air pressure signal of the main line 701 reaches the preset air pressure required for shaping. After reaching the preset air pressure required for shaping, the air pressure is maintained at the preset air pressure and the preset shaping holding time is maintained.

[0073] In step S160, when the gas pressure in the air pressure chamber 201a is maintained for a preset time, the control module 1101 controls the gas booster pump 6 to stop delivering high-pressure gas and relieves the pressure in the air pressure chamber 201a. After the pressure is relieved, the control module 1101 controls the hydraulic pump 5 to stop delivering power and allows the hydraulic pressure to flow back into the hydraulic pump 5, thereby resetting the clamping drive component 202 and taking out the differential pressure sensor.

[0074] Exemplarily, after the shaping is completed, the user presses the release button on the device, the clamping drive component 202 is retracted, the clamping block 201 and the differential pressure sensor are in a released state, the differential pressure sensor is taken out, and the entire shaping process is completed.

[0075] Working principle: the differential pressure sensor is installed in the clamping space, and the clamping drive component 202 drives the clamping block 201 to move, thereby reducing the clamping space and clamping the differential pressure sensor. The differential pressure sensor blocks the air pressure cavity 201a of the clamping block 201 to form a closed space. By introducing high-pressure gas into the air pressure cavity 201a of the clamping block 201, the air pressure in the air pressure cavity 201a increases, and the high-pressure gas squeezes the diaphragm of the differential pressure sensor to make it flat and deformed, thereby restoring the original flatness and waveform of the differential pressure sensor diaphragm, so that the diaphragms on both sides of the differential pressure sensor have consistent stiffness characteristics, which is beneficial to the filling of the pressure conduction medium of the differential pressure sensor, and ultimately improves the temperature compensation pass rate of the differential pressure sensor.

[0076] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A differential pressure sensor isolation diaphragm shaping device, characterized in that: include: Workbench; A clamping mechanism is arranged on the workbench, the clamping mechanism comprises a plurality of clamping blocks and at least one clamping driving component, the plurality of clamping blocks are linearly distributed along the length direction of the workbench, the clamping blocks are slidably arranged on the workbench, a clamping space is arranged between two adjacent clamping blocks, the clamping space is used to install a differential pressure sensor, and the clamping driving component is used to drive the clamping blocks to move along the length direction of the workbench to reduce the clamping space so that the clamping blocks clamp and fix the differential pressure sensor; Each of the clamping blocks is provided with an air pressure cavity, and the air pressure cavity is used to pass high-pressure gas to shape the differential pressure sensor diaphragm in the clamping space; The workbench is provided with a supporting assembly, the supporting assembly is provided with a sliding rod, and the clamping block is slidably arranged on the sliding rod.

2. The differential pressure sensor isolation diaphragm shaping device according to claim 1, characterized in that: The support assembly comprises a first support block, a second support block and a third support block which are linearly arranged along the length direction of the workbench, and two sliding bars are arranged on the support assembly.

3. The differential pressure sensor isolation diaphragm shaping device according to claim 2, characterized in that: The clamping mechanism comprises two symmetrically arranged clamping drive components, and the two clamping drive components are respectively arranged on the first supporting block and the third supporting block.

4. The differential pressure sensor isolation diaphragm shaping device according to claim 3, characterized in that: It also includes a hydraulic pump, the clamping drive component is a hydraulic cylinder, and the hydraulic pump is used to provide power for the clamping drive component.

5. The differential pressure sensor isolation diaphragm shaping device according to claim 4, characterized in that: The clamping block is provided with a gas channel, the gas channel is communicated with the air pressure chamber, and the gas channel is externally connected with an air pressure joint.

6. The differential pressure sensor isolation diaphragm shaping device according to claim 5, characterized in that: It also includes a gas booster pump, which is connected to the air pressure connector through a pipeline and is used to introduce gas into the air pressure chamber.

7. The differential pressure sensor isolation diaphragm shaping device according to claim 6, characterized in that: The pipeline includes a main pipeline and multiple branch pipelines, a gas distribution valve seat is provided between the main pipeline and the branch pipelines, the multiple branch pipelines are respectively connected to the air pressure joints of the clamping block, and the multiple branch pipelines are all connected to the gas distribution valve seat, and an air pressure control valve is provided on the main pipeline, and the air pressure control valve is used to control the on-off of the gas booster pump and the gas distribution valve seat.

8. The differential pressure sensor isolation diaphragm shaping device according to claim 7, characterized in that: A hydraulic control valve is provided between the clamping drive component and the hydraulic pump, and the hydraulic control valve is used to control the on-off of the clamping drive component and the hydraulic pump.

9. The differential pressure sensor isolation diaphragm shaping device according to claim 8, characterized in that: It also includes a control module, which includes a control module, a hydraulic monitoring module and an air pressure monitoring module. The hydraulic monitoring module and the air pressure monitoring module are both electrically connected to the control module. The hydraulic monitoring module is used to monitor the hydraulic value of the clamping drive component, and the air pressure monitoring module is used to monitor the air pressure value of the main line.

10. A differential pressure sensor isolation diaphragm shaping method, applied to the differential pressure sensor isolation diaphragm shaping device according to any one of claims 1 to 9, characterized in that: The method comprises: Install the differential pressure sensor in the clamping space; The control module controls the hydraulic control valve to open, and the hydraulic pump transmits power to the clamping drive component, so that the clamping drive component pushes the clamping block to move, so as to clamp and fix the differential pressure sensor; The hydraulic signal of the clamping drive component is monitored by the hydraulic monitoring module, and the control module compares the hydraulic signal with the preset hydraulic pressure. When the hydraulic signal reaches the preset hydraulic pressure, the control module controls the opening of the hydraulic control valve to maintain the hydraulic value of the clamping drive component; The control module controls the air pressure control valve to open, and the gas booster pump delivers high-pressure gas to the gas distribution valve seat. The high-pressure gas is distributed by the gas distribution valve seat and then delivered to the air pressure chamber. The air pressure signal of the main pipeline is monitored by the air pressure monitoring module, and the control module compares the air pressure signal with the preset air pressure. When the air pressure signal reaches the preset air pressure, the control module controls the opening of the air pressure control valve to maintain the gas pressure in the air pressure chamber; When the gas pressure in the air pressure chamber is maintained for a preset time, the control module controls the gas booster pump to stop delivering high-pressure gas and relieve the pressure in the air pressure chamber. After the pressure is relieved, the control module controls the hydraulic pump to stop power delivery and allows the hydraulic pressure to flow back into the hydraulic pump, reset the clamping drive component, and remove the differential pressure sensor.

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