Pressure detection device and pressure detection system

Abstract

The utility model provides a pressure detection device and a pressure detection system.The pressure detection device comprises a base, an instrument connector, a pressure input port, an instrument base, an adapter block, an image base, an image module, a positioning ring, a sliding rail, a sliding seat, a positioning column and a positioning rod, an internal thread groove is formed in the instrument base, and a first part of the adapter block is in threaded connection with the internal thread groove; the second part of the adapter block is rotatably connected with the instrument connector, the positioning block is connected with the inner ring of the ring body through the positioning elastic piece, the sliding seat is slidably connected with the sliding rail, the positioning column is fixedly arranged on the sliding seat, the first end of the positioning rod is fixedly connected with the positioning ring, and the second end of the positioning rod is movably connected with the positioning column; when a radial pressure instrument is detected, the pressure detection device is adjusted to a first working posture, the sliding seat is located at the first part of the sliding rail, the pressure output port is coaxial with the switching block, and when an axial pressure instrument is detected, the pressure detection device is adjusted to a second working posture, the sliding seat is located at the second part of the sliding rail, and the pressure output port faces the first direction.

Description

Technical Field

[0001] The present application relates to the technical field of pressure detection, and specifically, to a pressure detection device and a pressure detection system. Background Art

[0002] Pressure instruments are widely used in chemical industry, biology, energy and other fields. In order to improve the reliability of the measurement results of pressure instruments, it is necessary to test the pressure instruments.

[0003] A related technology, such as Figure 1 As shown, the pressure detection device includes a device base 010, an instrument connector 020, a camera bracket 030 and a camera 040, wherein the instrument connector 020 and the camera bracket 030 are located on the same axis. During the pressure detection process, the measuring end 051 of the pressure instrument 050 to be tested is connected to the instrument connector 020, and the camera 040 is set on the camera bracket 030. The camera 040 captures an image of the dial 052 of the pressure instrument 050. The image processing module can process the dial image to obtain detection data.

[0004] The pressure gauges in the prior art include radial pressure gauges and axial pressure gauges. Figure 2 As shown, it can be detected by the aforementioned related technologies, and the axial pressure instrument is as follows Figure 3 As shown, the dial 051 is arranged on the front of the head 053, the measuring end 052 is arranged on the back of the head 053, and the axis of the measuring end 052 is perpendicular to the dial 051. Furthermore, the position of the measuring end 052 on the back of the head 053 may be different depending on the manufacturer. It is difficult for the pressure detection device of the aforementioned related technology to detect the axial pressure instrument. Utility Model Content

[0005] The present application provides a pressure detection device and a pressure detection system, which are intended to detect radial pressure instruments and axial pressure instruments.

[0006] The first aspect of an embodiment of the present application provides a pressure detection device for detecting a pressure instrument, comprising: a base; an instrument connector for connecting a pressure instrument, a pressure output port being provided on the instrument connector; a pressure input port for connecting a pressure generating device, the pressure input port being provided on the base and connected to the pressure output port through a pipeline; an instrument base fixedly provided on a first end face of the base, an internal thread groove being provided on the instrument base, the notch of the internal thread groove facing away from the base; an adapter block, a first part of the adapter block being threadedly connected to the internal thread groove, and a second part of the adapter block being rotatably connected to the instrument connector; an image base being provided on the first end face of the base, the image base being located in a first direction of the instrument base; an image module for capturing an image of a dial of the pressure instrument, the image module being provided on the image base; a positioning ring comprising a ring body and at least three positioning blocks, the inner diameter of the ring body being larger than the outer diameter of the gauge head of the pressure instrument, the positioning blocks being connected to the inner ring of the ring body through a positioning elastic member The cam is connected to the base, and the ring body is provided with an opening on one side close to the base; the slide rail is arranged on the second end face of the base, the position of the first part of the slide rail corresponds to the instrument base, the position of the second part of the slide rail corresponds to between the instrument base and the image base, and the slide rail extends along the first direction; the slide, the slide is slidably connected to the slide rail; the positioning column is fixed on the slide, and the extension direction of the positioning column is perpendicular to the first end face of the base; the positioning rod, the first end of the positioning rod is fixedly connected to the positioning ring, and the second end of the positioning rod is movably connected to the positioning column, so that the positioning rod can move along the extension direction of the positioning column and can also rotate around the positioning column; during the pressure detection process, the positioning block abuts against the outer periphery of the head of the pressure instrument. In the first working posture, the slide is located at the first part of the slide rail, the pressure output port is coaxial with the adapter block and faces back to the base. In the second working posture, the slide is located at the second part of the slide rail, the pressure output port faces the first direction, and the central axis of the pressure output port is perpendicular to the central axis of the adapter block.

[0007] In the embodiment of the present application, when it is necessary to detect the radial pressure instrument, the pressure detection device is adjusted to the first working posture, the pressure output port is coaxial with the adapter block, the measuring end of the pressure instrument can be connected to the pressure output port, the dial of the pressure instrument faces the image module, the slide is located at the first part of the slide rail, and the position of the positioning column and the relative position of the positioning rod and the positioning column are adjusted so that the position of the positioning ring corresponds to the position of the gauge head of the pressure instrument. The inner diameter of the ring body is larger than the outer diameter of the gauge head of the pressure instrument. The gauge head of the pressure instrument can be clamped by the positioning block, and the radial pressure instrument can be detected. When it is necessary to detect the axial pressure When the force instrument is tested, the pressure detection device is adjusted to the second working posture, the pressure output port faces the first direction, the central axis of the pressure output port is perpendicular to the central axis of the adapter block, the measuring end of the pressure instrument can be connected to the pressure output port, the dial of the pressure instrument faces the image module, the slide is located in the second part of the slide rail, and the position of the positioning column and the relative position of the positioning rod and the positioning column are adjusted so that the position of the positioning ring corresponds to the position of the pressure instrument head. The inner diameter of the ring body is larger than the outer diameter of the pressure instrument head. The pressure instrument head can be clamped by the positioning block, and the axial pressure instrument can be tested.

[0008] In some examples of the first aspect of the embodiments of the present application, the image base includes: an image positioning assembly, the image module is arranged on the image positioning assembly, and the image positioning assembly is movably connected to the first end face of the base; a first motor for outputting torque, the first motor is driven and connected to the image positioning assembly through a driving rod, and the extension direction of the driving rod is perpendicular to the first end face of the base.

[0009] In an embodiment of the present application, the first motor is connected to the image positioning assembly through a driving rod, and the extension direction of the driving rod is perpendicular to the first end face of the base. When the acquisition angle of the image module needs to be adjusted, the image positioning assembly can be rotated by driving the first motor to output torque. The image module is set on the image positioning assembly, and the image module can be rotated.

[0010] In some examples of the first aspect of the embodiments of the present application, the pressure detection device also includes an angle sensor; the angle sensor is used to measure the relative angle between the second end of the positioning rod and the positioning column, and the signal output end of the angle sensor is coupled to the control end of the first motor; the angle sensor is arranged on the positioning rod and connected to the positioning column, or the angle sensor is arranged on the positioning column and is movably connected to the positioning rod; the second end of the positioning rod automatically rotates between the positioning column and automatically slides between the slide seat and the slide rail.

[0011] In an embodiment of the present application, when the positioning ring positions the gauge head of the pressure instrument, the angle of the gauge head of the pressure instrument can be reflected to the positioning ring. The positioning ring is fixed to the positioning rod, and the second end of the positioning rod automatically rotates between the positioning column and the slide seat automatically slides between the slide rail. Therefore, the angle of the gauge head of the pressure instrument can be reflected to the relative angle between the second end of the positioning rod and the positioning column. The angle sensor is used to measure the relative angle between the second end of the positioning rod and the positioning column. The angle sensor is coupled to the first motor, so that the first motor can drive the image module to rotate accordingly.

[0012] In some examples of the first aspect of the embodiments of the present application, the image positioning assembly includes: an image support seat, the image support seat is connected to the driving rod; an image positioning block, the image module is arranged on the image positioning block; an image support rod, one end of the image support rod is fixed on the image support seat, the image positioning block is movably connected to the image support rod, and the extension direction of the image support rod is perpendicular to the first end face of the base; a second motor, for outputting torque, the second motor is driven and connected to the image positioning block through a transmission belt, so that the image positioning block moves along the extension direction of the image support rod, or the relative position of the image positioning block and the image support rod is fixed.

[0013] In the embodiment of the present application, the image module is arranged on the image positioning block, and the second motor can drive the image positioning block to move through the transmission belt, thereby adjusting the height of the image module.

[0014] In some examples of the first aspect of the embodiments of the present application, the pressure detection device also includes a stress sensor: the stress sensor is used to measure the elastic force of the positioning elastic part, and the signal output end of the stress sensor is coupled with the control end of the second motor; the stress sensor is arranged on the ring body and connected to the positioning elastic part, or the stress sensor is arranged on the positioning block and connected to the positioning elastic part; the second end of the positioning rod slides freely along the positioning column.

[0015] In an embodiment of the present application, the outer diameters of the gauge heads of different pressure instruments may be different, the inner diameter of the ring body is larger than the outer diameter of the gauge head of the pressure instrument, and the positioning block is connected to the inner ring of the ring body through a positioning elastic member. The positioning ring of the embodiment of the present application can clamp gauge heads of different outer diameters. The larger the outer diameter of the clamped gauge head, the greater the elastic force of the positioning elastic member. When the position of the instrument connector remains unchanged, the larger the outer diameter of the gauge head, the higher the center position of the dial. The stress sensor is coupled to the second motor, and the second motor can be driven according to the measurement results of the stress sensor to make the height of the image module close to the height of the center position of the dial.

[0016] In some examples of the first aspect of the embodiments of the present application, the angles between two adjacent positioning blocks are equal, and the elastic potential energies of the positioning elastic members under the same elastic deformation are equal.

[0017] In an embodiment of the present application, the angles between two adjacent positioning blocks are equal, and the elastic potential energy of each positioning elastic member under the same elastic deformation is equal. When the positioning ring clamps the gauge head of the pressure instrument through the positioning blocks, the center of the gauge head of the pressure instrument can be made to coincide with the center of the positioning ring as much as possible. If the height of the image module is adjusted according to the measurement results of the stress sensor, or if the angle of the image module is adjusted according to the measurement results of the angle sensor, the adjustment accuracy can be improved.

[0018] In some examples of the first aspect of the embodiments of the present application, the pressure detection device also includes a locking structure; the locking structure is arranged on the positioning column and is detachably connected to the positioning rod. When the locking structure is locked with the positioning rod, the second end of the positioning rod is relatively fixed to the positioning column. When the locking structure is separated from the positioning rod, the second end of the positioning rod can move relative to the positioning column.

[0019] In some examples of the first aspect of the embodiments of the present application, the pressure detection device also includes a locking structure; the locking structure is arranged on the positioning rod and is detachably connected to the positioning column. When the locking structure is locked and connected to the positioning column, the second end of the positioning rod and the positioning column are relatively fixed. When the locking structure is separated from the positioning column, the second end of the positioning rod and the positioning column can move relative to each other.

[0020] In an embodiment of the present application, the relative movement between the positioning column and the positioning rod is unlockably locked by a locking structure. When the relative position or relative angle between the positioning column and the positioning rod needs to be adjusted, the locking structure can be set to an unlocked state for adjustment. When the adjustment of the relative position and relative angle between the positioning column and the positioning rod is completed, the locking structure can be set to a locked state. The positioning ring can fix the head of the pressure instrument. Since the instrument connector is connected to the measuring end of the pressure instrument, the stability of the pressure instrument during the pressure detection process can be improved, and the reliability of the pressure detection results can be improved.

[0021] In some examples of the first aspect of the embodiments of the present application, the adapter block is sealed and connected to the internal thread groove, so that a pressure chamber is formed between the adapter block and the bottom of the internal thread groove; a first connection port is provided at the bottom of the internal thread groove, the first connection port is connected to the pressure chamber, and the first connection port is connected to the pressure input port through the internal pipeline of the base; a second connection port is provided on the adapter block, the second connection port is arranged opposite to the first connection port, the second connection port is connected to the pressure chamber, and the second connection port is connected to the pressure output port through the pipeline.

[0022] In an embodiment of the present application, the pressure medium enters from the pressure input port, passes through the internal pipeline of the base and the first connecting port, enters the pressure chamber between the adapter block and the internal thread groove, and then enters the second connecting port from the pressure chamber. The second connecting port is connected to the pressure output port through a pipeline, and the pressure medium flows to the pressure output port, thereby realizing the transmission of the medium pressure.

[0023] In some examples of the first aspect of the embodiments of the present application, a first rotating hole is provided on the second part of the adapter block, and a first annular connecting groove is provided on the inner side of the first rotating hole. The first connecting groove is connected to the second connecting port through the internal pipeline of the adapter block. A first rotating shaft is provided on the instrument connector, and the first rotating hole is coaxially sleeved with the first rotating shaft. A third connecting port is provided on the side wall of the first rotating shaft, and the position of the third connecting port corresponds to the first connecting groove, so that the third connecting port is connected to the first connecting groove, and the third connecting port is connected to the pressure output port through the internal pipeline of the instrument connector; a second rotating hole is provided on the second part of the adapter block, and the second rotating hole is coaxial with the first rotating hole. A second rotating shaft is provided on the instrument connector, and the second rotating hole is coaxially sleeved with the second rotating shaft.

[0024] In some examples of the first aspect of the embodiments of the present application, a first rotating hole is provided on the second part of the adapter block, and a first annular connecting groove is provided on the inner side of the first rotating hole. The first connecting groove is connected to the second connecting port through the internal pipeline of the adapter block. A first rotating shaft is provided on the instrument connector, and the first rotating hole is coaxially sleeved with the first rotating shaft. A third connecting port is provided on the side wall of the first rotating shaft, and the position of the third connecting port corresponds to the first connecting groove, so that the third connecting port is connected to the first connecting groove, and the third connecting port is connected to the pressure output port through the internal pipeline of the instrument connector; a second rotating shaft is provided on the second part of the adapter block, and the second rotating shaft is coaxial with the first rotating hole. A second rotating hole is provided on the instrument connector, and the second rotating hole is coaxially sleeved with the second rotating shaft.

[0025] In the embodiment of the present application, through the cooperation between the first rotating hole and the first rotating shaft, the cooperation between the second rotating hole and the second rotating shaft, and the cooperation between the first rotating hole and the first rotating hole, on the one hand, the instrument connector can rotate relative to the adapter block, and on the other hand, the pressure medium can be transferred from the adapter block to the instrument connector based on the rotating structure.

[0026] In some examples of the first aspect of the embodiments of the present application, a third rotating shaft is provided on the second part of the adapter block, and a fourth connection port is provided on the side wall of the third rotating shaft. The fourth connection port is connected to the second connection port through the internal pipeline of the adapter block. A third rotating hole is provided on the instrument connector, and the third rotating hole is coaxially sleeved with the third rotating shaft. An annular second connecting groove is provided on the inner side of the third rotating hole, and the position of the second connecting groove corresponds to the fourth connection port, so that the second connecting groove is connected to the fourth connection port, and the second connecting groove is connected to the pressure output port through the internal pipeline of the instrument connector; a fourth rotating shaft is provided on the second part of the adapter block, and the fourth rotating shaft is coaxial with the third rotating shaft. A fourth rotating hole is provided on the instrument connector, and the fourth rotating hole is coaxially sleeved with the fourth rotating shaft.

[0027] In some examples of the first aspect of the embodiments of the present application, a third rotating shaft is provided on the second part of the adapter block, and a fourth connection port is provided on the side wall of the third rotating shaft. The fourth connection port is connected to the second connection port through the internal pipeline of the adapter block, and a third rotating hole is provided on the instrument connector. The third rotating hole is coaxially sleeved with the third rotating shaft. An annular second connecting groove is provided on the inner side of the third rotating hole. The position of the second connecting groove corresponds to the fourth connection port, so that the second connecting groove is connected to the fourth connection port, and the second connecting groove is connected to the pressure output port through the internal pipeline of the instrument connector; a fourth rotating hole is provided on the second part of the adapter block, and the fourth rotating hole is coaxial with the third rotating shaft. A fourth rotating shaft is provided on the instrument connector, and the fourth rotating hole is coaxially sleeved with the fourth rotating shaft.

[0028] In the embodiment of the present application, through the cooperation between the third rotating hole and the third rotating shaft, the cooperation between the fourth rotating hole and the fourth rotating shaft, and the cooperation between the third rotating hole and the fourth rotating hole, on the one hand, the instrument connector can rotate relative to the adapter block, and on the other hand, the pressure medium can be transferred from the adapter block to the instrument connector based on the rotating structure.

[0029] The second aspect of the embodiments of the present application provides a pressure detection system for detecting a pressure instrument, comprising: a pressure detection device as in any example of the first aspect of the embodiments of the present application; a pressure controller for providing detection pressure, the pressure output end of the pressure controller being connected to the pressure input port of the pressure detection device; a reference pressure measuring module for measuring the medium pressure, the measuring end of the reference pressure measuring module being connected to the output end of the pressure controller, and the accuracy of the reference pressure measuring module being higher than the accuracy of the pressure instrument.

[0030] The beneficial effects of the second aspect of the embodiment of the present application can be referred to the first aspect of the embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of a pressure detection device in the prior art.

[0032] Figure 2 Schematic diagram of a radial pressure instrument in the prior art.

[0033] Figure 3 Schematic diagram of an axial pressure instrument in the prior art.

[0034] Figure 4 This is a schematic top view of the pressure detection device according to an embodiment of the present application.

[0035] Figure 5 for Figure 4 Sectional view of the AA plane.

[0036] Figure 6 for Figure 4 Cross-sectional view of the middle BB plane.

[0037] Figure 7 This is a schematic diagram of the connection between the pressure detection device and the radial pressure instrument in an embodiment of the present application.

[0038] Figure 8 This is a schematic diagram of the connection between the pressure detection device and the axial pressure instrument in an embodiment of the present application.

[0039] Figure 9 This is a connection diagram of the pressure detection system according to an embodiment of the present application.

[0040] Reference numerals:

[0041] 010. Device base, 020. Instrument connector, 030. Camera bracket, 040. Camera, 050. Instrument to be tested (pressure instrument), 051. Measuring end (of pressure instrument), 052. Dial (of pressure instrument), 053. Head (of pressure instrument),

[0042] 100, base, 101, first end face of base, 102, second end face of base, 111, pressure input port, 210, instrument connector, 211, pressure output port, 220, instrument base, 221, internal thread groove, 230, adapter block, 240, pressure chamber, 251, first connection port, 252, second connection port, 261, first rotation hole, 262, first connecting groove, 263, first rotating shaft, 264, third connection port, 271, third rotating shaft, 272, fourth connection port, 273, third rotation hole, 274, second connecting groove, 300, image base, 310, image fixation Positioning assembly, 311, image support seat, 312, image positioning block, 313, image support rod, 321, first motor, 322, second motor, 331, drive rod, 332, transmission belt, 400, positioning ring, 410, ring body, 420, positioning block, 430, positioning elastic member, 440, opening, 510, slide rail, 520, slide seat, 530, positioning column, 540, positioning rod, 541, first end of the positioning rod, 542, second end of the positioning rod, 610, image module, 620, angle sensor, 630, stress sensor, 710, pressure controller, 720, reference pressure measuring module. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0044] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific implementation methods disclosed below.

[0045] Coupling in this application means that when two or more circuits form a network, if the current or voltage in one of the circuits changes, it can affect other circuits to also undergo similar changes. The coupling relationship can be achieved by wired transmission, wireless transmission, or other feasible implementation methods. In order to distinguish between coupling and medium transmission connection, solid lines are used to represent medium transmission connection and dotted lines are used to represent coupling in the drawings of the specification.

[0046] The detection process in the embodiments of the present application can be a combination of one or more of the verification, calibration, verification, testing, and validation processes. For example, at least one detection pressure is determined according to the detection purpose of the instrument to be tested, and the pressure detection system provides a pressure medium with a detection pressure to the instrument to be tested. The instrument to be tested measures the medium pressure of the pressure medium to obtain the data to be tested. The data to be tested is processed according to the detection purpose to obtain the detection result.

[0047] The pressure detection device in the embodiment of the present application can be used to implement the entire pressure detection process, and can also be used to implement part of the pressure detection process. The pressure detection system in the embodiment of the present application can be used to implement the entire pressure detection process, and can also be used to implement part of the pressure detection process.

[0048] The pressure generating device of the embodiment of the present application may include a pressure control device, such as a pressure controller, a hand pump, etc., and may also include a pressure source device, such as a hand pump, a vacuum pump, an electric pump, a pressure bottle, etc. It can be understood that as long as the device can provide a pressure medium with a detection pressure to the pressure detection device of the embodiment of the present application, it can be regarded as all or part of the pressure generating device.

[0049] The pressure instrument in the embodiment of the present application can be a pressure gauge, a pressure meter, or a pressure switch with a meter head and a measuring end, a pressure transmitter, or other pressure measuring devices. The pressure medium in the embodiment of the present application can be a gas medium or a liquid medium.

[0050] For the convenience of description, in the embodiment of the present application, during the pressure detection process, the placement posture of the pressure detection device determines the upper direction and the lower direction, the dial direction of the pressure instrument is taken as the front direction, the camera direction of the image module is taken as the rear direction, and the left direction and the right direction are determined accordingly. Correspondingly, Figure 4 The perspective is looking down. Figure 4 The perspective of AA ( Figure 5 The perspective of Figure 4 From the perspective of the middle BB ( Figure 6 The perspective of the left view is Figure 6 、 Figure 7 and Figure 8 The same perspective, Figure 4 and Figure 9 The same perspective.

[0051] like Figures 4 to 9 As shown, a pressure detection device is used to detect a pressure instrument 050. The pressure detection device includes a base 100, an instrument connector 210, an instrument base 220, an adapter block 230, an image base 300, a positioning ring 400, a slide rail 510, a slide 520, a positioning column 530, a positioning rod 540 and an image module 610.

[0052] Base 100, during the pressure detection process, the first end face 101 of the base 100 faces upward, and a pressure input port 111 is provided on the base 100. The pressure input port 111 is used to connect a pressure generating device. The pressure input port 111 is provided on the base 100. The pressure input port 111 can be provided on the first end face 101 of the base 100, or on other end faces of the base 100. A valve or a plug can be provided on the pressure input port 111, so that the pressure input port 111 can be switched to a cut-off state when needed. In the cut-off state, the pressure medium cannot pass through the pressure input port 111. The pressure input port 111 can also be switched to a conducting state when needed. In the conducting state, the pressure medium can pass through the pressure input port 111, thereby realizing the transmission of the medium pressure.

[0053] The instrument connector 210 is used to connect the pressure instrument 050. A pressure output port 211 is provided on the instrument connector 210. The pressure output port 211 is connected to the pressure input port 111 through a pipeline, so that the pressure medium flows into the pressure input port 111 and is transmitted to the pressure output port 211 through the pipeline. The pressure output port 211 is provided at one end of the instrument connector 210, and the measuring end 051 of the pressure instrument 050 to be measured is connected to the end of the instrument connector 210 provided with the pressure output port 211, so that the pressure medium can flow from the pressure output port 211 to the pressure instrument 050, thereby realizing the transmission of the medium pressure.

[0054] The instrument base 220 is fixed on the first end face 101 of the base 100. An internal thread groove 221 is provided on the instrument base 220. The notch of the internal thread groove 221 faces away from the base 100. The instrument base 220 and the base 100 can be two individuals fixed together or integrated. The notch of the internal thread groove 221 is opened on the upper end face of the instrument base 220. The bottom of the internal thread groove 221 can be set in the middle of the instrument base 220, or it can extend to the first end face 101 of the base 100. An internal thread structure is provided on the groove wall of the internal thread groove 221.

[0055] The adapter block 230, the first part of the adapter block 230 is threadedly connected to the internal thread groove 221, wherein the first part of the adapter block 230 may include the lower part of the adapter block 230, and may also include the middle part of the adapter block 230, and the outer side surface of the first part of the adapter block 230 is provided with an external thread structure, and the external thread structure can be threadedly connected to the internal thread structure of the internal thread groove. The adapter block 230 can be screwed into the instrument base 220, thereby changing the relative rotation direction of the adapter block 230 and the instrument base 220, and lowering the height of the adapter block 230. The adapter block 230 can also be screwed out from the instrument base 220, thereby changing the relative rotation direction of the adapter block 230 and the instrument base 220, and increasing the height of the adapter block 230.

[0056] In order to realize the transmission of pressure medium from the base 100 to the adapter block 230, the present application provides a preferred implementation method. In some examples of the embodiments of the present application, the adapter block 230 is sealedly connected to the internal thread groove 221, so that a pressure chamber 240 is formed between the adapter block 230 and the bottom of the internal thread groove 221; a first connecting port 251 is provided at the bottom of the internal thread groove 221, and the first connecting port 251 is connected to the pressure chamber 240, and the first connecting port 251 is connected to the pressure input port 111 through the internal pipeline of the base 100; a second connecting port 252 is provided on the adapter block 230, and the second connecting port 252 is arranged opposite to the first connecting port 251, and the second connecting port 252 is connected to the pressure chamber 240, and the second connecting port 252 is connected to the pressure output port 211 through a pipeline.

[0057] Specifically, the adapter block 230 and the internal thread groove 221 are sealed together. The sealed connection can be achieved through the aforementioned threaded connection, or a sealing structure can be set between the adapter block 230 and the internal thread groove 221. The sealing structure can be set outside the aforementioned threaded connection position or inside the aforementioned threaded connection position to achieve sealing. A chamber is formed between the adapter block 230 and the bottom of the internal thread groove 221. On the basis of the aforementioned sealing connection, the chamber is also sealed, thereby forming a pressure chamber 240 that can accommodate pressure medium; a first connecting port 251 is set at the bottom of the internal thread groove 221, and a medium transmission pipeline is provided inside the base 100. The first connecting port 251 is connected to the pressure input port 111 on the base through the medium transmission pipeline, so that the pressure medium can be transmitted from the pressure input port 111 to the first connecting port 251. The first connecting port 251 is connected to the pressure chamber 240, so that the pressure medium can enter the pressure chamber 240 from the first connecting port 251. A second connecting port is set at the bottom of the adapter block 230 252, preferably, the second connection port 252 is located at the bottom center of the adapter block 230, and the first connection port 251 is located at the bottom center of the internal thread groove 221, so that when the adapter block 230 and the instrument base 220 rotate relative to each other, the first connection port 251 and the second connection port 252 are always arranged first, when the adapter block 230 and the instrument base 220 are relatively screwed in, the volume of the pressure chamber 240 decreases, and when the adapter block 230 and the instrument base 220 are relatively screwed out, the volume of the pressure chamber 240 increases, and the pressure chamber 240 is The pressure medium in 240 can flow into the second connecting port 252. Through the above structure, the pressure medium enters from the pressure input port 111, is transmitted through the pipeline inside the base 100, flows from the first connecting port 251, enters the pressure chamber 240, and then flows from the pressure chamber 240 into the second connecting port 252, thereby realizing the transmission of the pressure medium from the base 100 to the adapter block 230, and the relative height of the adapter block 230 and the base 100 can be adjusted, and the relative rotation direction of the adapter block 230 and the base 100 can also be adjusted.

[0058] The second portion of the adapter block 230 is rotatably connected to the instrument connector 210 .

[0059] This application provides four preferred implementations for achieving a rotational connection between the adapter block 230 and the instrument connector 210 and, while achieving the rotational connection, transferring the pressure medium from the adapter block 230 to the instrument connector 210 .

[0060] In the first example of the embodiment of the present application, a first rotating hole 261 is provided on the second part of the adapter block 230, and a first annular connecting groove 262 is provided on the inner side of the first rotating hole 261. The first connecting groove 262 is connected to the second connecting port 252 through the internal pipeline of the adapter block 230. A first rotating shaft 263 is provided on the instrument connector 210, and the first rotating hole 261 is coaxially sleeved with the first rotating shaft 263. A third connecting port 264 is provided on the side wall of the first rotating shaft 263. The position of the third connecting port 264 corresponds to the first connecting groove 262, so that the third connecting port 264 is connected to the first connecting groove 262, and the third connecting port 264 is connected to the pressure output port 211 through the internal pipeline of the instrument connector 210; a second rotating hole is provided on the second part of the adapter block, and the second rotating hole is coaxial with the first rotating hole. A second rotating shaft is provided on the instrument connector, and the second rotating hole is coaxially sleeved with the second rotating shaft.

[0061] Specifically, a first rotating hole 261 is provided on the first adapter side surface of the adapter block 230, and a second rotating hole is provided on the second adapter side surface of the adapter block 230. The first rotating hole 261 is coaxial with the second rotating hole. The first connector side surface of the instrument connector 210 corresponding to the adapter block 230 is provided with a first rotating shaft 263. In the assembled state, the first connector side surface is arranged opposite to the first adapter side surface, and the outer side surface of the first rotating shaft 263 is adapted to the inner side surface of the first rotating hole 261, so that the first rotating hole 261 is adapted to be arranged on the first rotating shaft 263, and the first rotating hole 261 is adapted to the first rotating shaft 263. The shaft 263 is coaxial, and a second rotation axis is set on the second connector side of the instrument connector 210. In the assembled state, the second rotation hole is adapted to be arranged on the second rotation axis, and the second rotation hole is coaxial with the second rotation axis. Based on the above structure, the adapter block 230 and the instrument connector 210 can rotate relative to each other. Furthermore, if the first adapter side is the inward side, the first connector side is the outward side; if the first adapter side is the outward side, the first connector side is the inward side. As long as the first adapter side and the first connector side are relatively arranged, the solution can be implemented with one of them facing inward or outward.

[0062] Furthermore, an annular first connecting groove 262 is provided on the inner side of the first rotating hole 261, a medium transmission pipeline is provided inside the adapter block 230, and the second connecting port 252 is connected to the first connecting groove 262 through the medium transmission pipeline. Corresponding to the structure of the first connecting groove 262, a third connecting port 264 is provided on the first rotating shaft 263. The position of the third connecting port 264 corresponds to the first connecting groove 262. When the first rotating shaft 263 and the first rotating hole 261 rotate coaxially, since the first connecting groove 262 is annular, the third connecting port 264 can always be located at a different annular position of the first connecting groove 262. position, thereby connecting the third connecting port 264 to the first connecting groove 262, and a medium transmission pipeline is provided inside the instrument joint 210, and the third connecting port 264 is connected to the pressure output port 211 through the medium transmission pipeline. Based on the aforementioned connection structure, when the pressure medium enters the medium transmission pipeline inside the adapter block 230 from the second connecting port 252, the pressure medium can flow into the first connecting groove 262 through the medium transmission pipeline and even fill the first connecting groove 262, flow from the first connecting groove 262 into the third connecting port 264, and then flow to the pressure output port 211 through the medium transmission pipeline inside the instrument joint 210, thereby realizing the transmission of the medium pressure.

[0063] In the second example of the embodiment of the present application, a first rotating hole 261 is provided on the second part of the adapter block 230, and a first annular connecting groove 262 is provided on the inner side of the first rotating hole 261. The first connecting groove 262 is connected to the second connecting port 252 through the internal pipeline of the adapter block 230. A first rotating shaft 263 is provided on the outer side of the instrument connector 210. The first rotating hole 261 is coaxially sleeved with the first rotating shaft 263. A third connecting port 264 is provided on the side wall of the first rotating shaft 263. The position of the third connecting port 264 corresponds to the first connecting groove 262, so that the third connecting port 264 is connected to the first connecting groove 262. The third connecting port 264 is connected to the pressure output port 211 through the internal pipeline of the instrument connector 210; a second rotating shaft is provided on the second part of the adapter block, and the second rotating shaft is coaxial with the first rotating hole. A second rotating hole is provided on the instrument connector, and the second rotating hole is coaxially sleeved with the second rotating shaft.

[0064] In the second example, when the pressure medium enters the medium transmission pipeline inside the adapter block 230 from the second connecting port 252, the pressure medium can flow into the first connecting groove 262 through the medium transmission pipeline and even fill the first connecting groove 262, flow from the first connecting groove 262 into the third connecting port 264, and then flow to the pressure output port 211 through the medium transmission pipeline inside the instrument connector 210, thereby realizing the transmission of the medium pressure; the difference between the second example and the first example is that a second rotating shaft is provided on the second adapter side surface of the adapter block 230, and the first rotating hole 261 is coaxial with the second rotating shaft. Corresponding to the adapter block 230, a second rotating shaft is provided on the second connector side surface of the instrument connector 210. In the assembled state, the second rotating hole is adapted to be arranged on the second rotating shaft, and the second rotating hole is coaxial with the second rotating shaft. Based on the above structure, the adapter block 230 and the instrument connector 210 can rotate relative to each other, and this structure can achieve basically the same technical effect as the first example.

[0065] In the third example of the embodiment of the present application, a third rotating shaft 271 is provided on the second part of the adapter block 230, and a fourth connecting port 272 is provided on the side wall of the third rotating shaft 271. The fourth connecting port 272 is connected to the second connecting port 252 through the internal pipeline of the adapter block. A third rotating hole 273 is provided on the instrument connector 210. The third rotating hole 273 is coaxially sleeved with the third rotating shaft 271. An annular second connecting groove 274 is provided on the inner side of the third rotating hole 273. The position of the second connecting groove 274 corresponds to the fourth connecting port 272, so that the second connecting groove 274 is connected to the fourth connecting port 272. The second connecting groove 274 is connected to the pressure output port 211 through the internal pipeline of the instrument connector 210; a fourth rotating shaft is provided on the second part of the adapter block, and the fourth rotating shaft is coaxial with the third rotating shaft. A fourth rotating hole is provided on the instrument connector, and the fourth rotating hole is coaxially sleeved with the fourth rotating shaft.

[0066] Specifically, a third rotating shaft 271 is provided on the first adapter side of the adapter block 230, and a fourth rotating shaft is provided on the second adapter side of the adapter block 230, and the third rotating shaft 271 is coaxial with the fourth rotating shaft. Corresponding to the adapter block 230, a third rotating hole 273 is provided on the first joint side of the instrument joint 210, and a fourth rotating hole is provided on the second joint side of the instrument joint 210. In the assembled state, the first joint side is arranged opposite to the first adapter side, and the outer side surface of the third rotating shaft 271 is adapted to the inner side surface of the third rotating hole 273, so that the third rotating hole 273 is adapted to be arranged on the third rotating shaft 271, and the third rotating hole 273 is coaxial with the third rotating shaft 271. Similarly, the second joint side is arranged opposite to the second adapter side, and the fourth rotating hole is adapted to be arranged on the fourth rotating shaft, and the fourth rotating hole is coaxial with the fourth rotating shaft. Based on the above structure, the adapter block 230 and the instrument joint 210 can rotate relative to each other.

[0067] Furthermore, a fourth connection port 272 is provided on the outer side of the third rotating shaft 271, a medium transmission pipeline is provided inside the adapter block 230, and the second connection port 252 is connected to the fourth connection port 272 through the medium transmission pipeline. Corresponding to the structure of the fourth connection port 272, an annular second communicating groove 274 is provided on the inner side of the third rotating hole 273. The second communicating groove 274 corresponds to the position of the fourth connection port 272. When the third rotating shaft 271 and the third rotating hole 273 rotate coaxially, since the second communicating groove 274 is annular, the fourth connection port 272 can always be located at a different annular position of the second communicating groove 274, thereby making the fourth connection port 272 is kept in a connected state with the second communicating groove 274, a medium transmission pipeline is set inside the instrument joint 210, and the pressure output port 211 is connected to the second communicating groove 274 through the medium transmission pipeline. Based on the aforementioned connection structure, when the pressure medium enters the medium transmission pipeline inside the adapter block 230 from the second connecting port 252, the pressure medium can flow to the fourth connecting port 272 through the medium transmission pipeline, and then flow into the second communicating groove 274 through the fourth connecting port 272, and then fill the second communicating groove 274. Afterwards, it flows from the second communicating groove 274 to the pressure output port 211 through the medium transmission pipeline inside the instrument joint 210, thereby realizing the transmission of the medium pressure.

[0068] In the fourth example of the embodiment of the present application, a third rotating shaft 271 is provided on the second part of the adapter block 230, and a fourth connecting port 272 is provided on the side wall of the third rotating shaft 271. The fourth connecting port 272 is connected to the second connecting port 252 through the internal pipeline of the adapter block. A third rotating hole 273 is provided on the instrument connector 210. The third rotating hole 273 is coaxially sleeved with the third rotating shaft 271. An annular second connecting groove 274 is provided on the inner side of the third rotating hole 273. The position of the second connecting groove 274 corresponds to the fourth connecting port 272, so that the second connecting groove 274 is connected to the fourth connecting port 272. The second connecting groove 274 is connected to the pressure output port 211 through the internal pipeline of the instrument connector 210; a fourth rotating hole is provided on the second part of the adapter block, and the fourth rotating hole is coaxial with the third rotating shaft. A fourth rotating shaft is provided on the instrument connector, and the fourth rotating hole is coaxially sleeved with the fourth rotating shaft.

[0069] In the fourth example, when the pressure medium enters the medium transmission pipeline inside the adapter block 230 from the second connection port 252, the pressure medium can flow to the fourth connection port 272 through the medium transmission pipeline, and then flow into the second connecting groove 274 through the fourth connection port 272, thereby filling the second connecting groove 274. Thereafter, the pressure medium flows from the second connecting groove 274 to the pressure output port 211 through the medium transmission pipeline inside the instrument connector 210, thereby realizing the transmission of the medium pressure. The difference between the fourth example and the third example is that a fourth rotation hole is provided on the second adapter side surface of the adapter block 230, and the third rotation axis 271 is coaxial with the fourth rotation hole. Corresponding to the adapter block 230, a fourth rotation axis is provided on the second connector side surface of the instrument connector 210. In the assembled state, the fourth rotation hole is adapted to be arranged on the fourth rotation axis, and the fourth rotation hole is coaxial with the fourth rotation axis. Based on the above structure, the adapter block 230 and the instrument connector 210 can rotate relative to each other. This structure can achieve basically the same technical effect as the third example.

[0070] The image base 300 is disposed on the first end surface 101 of the base 100, and the image base 300 is located in a first direction of the instrument base 220; specifically, the image base 300 is disposed on the upper end surface of the base 100, and the image base 300 is located in the front direction of the instrument base 220, so that when the image module 610 is disposed on the image base 300 and the pressure instrument 050 is connected to the instrument connector 210, the image module 610 is located in front of the pressure instrument 050.

[0071] For adjusting the orientation of the image module 610, preferably, the embodiment of the present application can further improve the image base 300. For example, in some examples of the embodiments of the present application, the image base 300 includes: an image positioning component 310, the image module 610 is arranged on the image positioning component 310, and the image positioning component 310 is movably connected to the first end surface 101 of the base 100; a first motor 321 for outputting torque, the first motor 321 is driven and connected to the image positioning component 310 through a driving rod 331, and the extending direction of the driving rod 331 is perpendicular to the first end surface 101 of the base 100. For example, the image positioning component includes: an image support seat 311, an image support seat The seat 311 is connected to the driving rod 331; the image positioning block 312, the image module 610 is arranged on the image positioning block 312; the image support rod 313, one end of the image support rod 313 is fixed on the image support seat 311, the image positioning block 312 is movably connected to the image support rod 313, and the extension direction of the image support rod 313 is perpendicular to the first end face 101 of the base 100; the second motor 322 is used to output torque, and the second motor 322 is driven and connected to the image positioning block 312 through the transmission belt 332, so that the image positioning block 312 moves along the extension direction of the image support rod 313, or the relative position of the image positioning block 312 and the image support rod 313 is fixed.

[0072] Specifically, the image base 300 may include an image positioning component 310, and the image positioning component 310 may include an image support seat 311, an image positioning block 312 and an image support rod 313, wherein the image support seat 311 is slidably connected, rolled, or has a gap with the first end surface 101 of the base 100. Preferably, the image support seat 311 is rolled with the first end surface 101 of the base 100, the bottom surface of the image support seat 311 is drivingly connected to the first end of the driving rod 331, and the second end of the driving rod 331 is connected to the first motor 321. The image support base 311 is connected to the image support rod 313 on the upper end surface, and the image support rod 313 is provided with an image positioning block 312 movably connected thereto. The second motor 322 is connected to the image positioning block 312 by a transmission belt 332, and the image positioning block 312 is used to install the image module 610. In the preparation stage of the pressure detection process, the first motor 321 is controlled to output a positive torque, and the positive torque can drive the driving rod 331 to rotate clockwise, and the driving rod 331 drives the image support base 311 and the image support base 311. The image positioning block 312, the image support rod 313, and the image module 610 rotate clockwise, and the first motor 321 is controlled to output a reverse torque, and the reverse torque can drive the driving rod 331 to rotate counterclockwise. The driving rod 331 drives the image support seat 311 and the image positioning block 312, the image support rod 313, and the image module 610 located on the image support seat 311 to rotate counterclockwise. The first motor 321 is controlled to stop outputting torque, and the direction of the image module 610 remains unchanged. The second motor 322 is controlled to output a positive torque. The positive torque The transmission belt 322 can be driven to rotate clockwise (direction shown in the figure), and the transmission belt 322 drives the image positioning block 312 to move upward, thereby driving the image module 610 to move upward. The second motor 322 is controlled to output a reverse torque, and the reverse torque can drive the transmission belt 322 to rotate counterclockwise (direction shown in the figure), and the transmission belt 322 drives the image positioning block 312 to move downward, thereby driving the image module 610 to move downward. The second motor 322 is controlled to stop outputting torque and lock the transmission belt 322, so that the height of the image module 610 remains unchanged.

[0073] The image module 610 is used to capture the image of the dial 051 of the pressure instrument 050. The image module 610 is set on the image base 300. Combined with the above example, the orientation of the image module 610 can be kept unchanged, the position of the image module 610 can be raised or lowered, and the direction of the image module 610 can be rotated.

[0074] The positioning ring 400 includes a ring body 410 and at least three positioning blocks 420. The inner diameter of the ring body 410 is larger than the outer diameter of the gauge head 053 of the pressure instrument 050. The positioning blocks 420 are connected to the inner ring of the ring body 410 via positioning elastic members 430. The ring body 410 has an opening 440 on a side close to the base 100. The slide rail 510 is provided on the second end surface 102 of the base 100. The first portion of the slide rail 510 is located corresponding to the instrument base 220, and the second portion of the slide rail 510 is located between the instrument base 520 and the image base 300. The slide rail 510 extends along a first direction. The slide base 520, The slide 520 is slidably connected to the slide rail 510; the positioning column 530 is fixed on the slide 520, and the extension direction of the positioning column 530 is perpendicular to the first end face 101 of the base 100; the positioning rod 540, the first end 541 of the positioning rod 540 is fixedly connected to the positioning ring 400, and the second end 542 of the positioning rod 540 is movably connected to the positioning column 530, so that the positioning rod 540 can move along the extension direction of the positioning column 530, and can also rotate around the positioning column 530; further preferably, the angles between two adjacent positioning blocks 420 are equal, and the elastic potential energy of each positioning elastic member 430 under the same elastic deformation is equal.

[0075] Specifically, the pressure detection device may include a slide rail 510 , a slide seat 520 , a positioning column 530 , a positioning rod 540 and a positioning ring 400 .

[0076] Among them, the slide rail 510 is arranged on the second end surface 102 of the base 100. For example, the second end surface 102 of the base 100 is also the right side surface of the base. The slide rail extends in the front-to-back direction. The position of the first part of the slide rail corresponds to the position of the instrument base 220. For example, the central axis of the instrument base 220 extending in the left-right direction passes through the first part of the slide rail. The position between the instrument base 520 and the image base 300 corresponds to the position of the second part of the instrument base 520. It can be understood that the longer the extension length of the slide rail 510, the larger the space available for adjustment.

[0077] The slide 520 is slidably connected to the slide rail 510 so that the slide 520 can slide along the slide rail 510. For example, in some cases, the slide 520 can slide to the first part of the slide rail, thereby corresponding to the position of the instrument base 220. In other cases, the slide 520 can slide to the second part of the slide rail, thereby being located between the instrument base 520 and the image base 300 in the front-to-back direction, that is, located in front of the instrument base 520 in the front-to-back direction.

[0078] The bottom end of the positioning column 530 is fixed to the upper end surface of the slide 520, and the positioning column 530 extends in the up-down direction. It can be understood that the greater the length of the positioning column 530, the larger the space available for the positioning rod 540 to slide and adjust on the positioning column 530. In some examples, the radius of the positioning ring 500 is L1. When the degree of rotation between the adapter block 230 and the instrument base 220 reaches the maximum, the distance between the upper end surface of the adapter block 230 and the upper end surface of the base 100 is L2, the axial length of the instrument connector 210 is L3, the deviation between the positioning rod 540 and the center of the positioning ring 400 is L4, and the distance between the slide 520 and the upper end surface of the base 100 is L5. Then, the length of the positioning column 530 can be greater than or equal to the sum of L1, L2, L3, L4 and L5.

[0079] The positioning ring 400 is used to position the gauge head 053 of the pressure instrument 050. Specifically, the positioning ring 400 includes a ring body 410, at least three positioning blocks 420 and at least three positioning elastic members 430. The positioning blocks 420 are connected to the inner ring of the ring body 410 through the positioning elastic members 430.

[0080] The distribution angle of the ring body 410 is less than 360°. Preferably, as shown in the figure, the distribution angle of the ring body 410 is less than 270°, thereby forming an opening 440 at the lower end of the ring body 410. The design purpose of the opening 440 structure is that when testing the radial pressure instrument, the measuring end of the radial pressure instrument can pass through the opening 440 and thus connect to the instrument connector 210 below the opening 440.

[0081] Preferably, the positioning blocks 420 and the positioning elastic members 430 are distributed at equal angles on the inner side of the ring body 410, and the angles between any two adjacent positioning blocks 420 are equal. As shown in the figure, if there are three positioning blocks 420, the angles between any two adjacent positioning blocks 420 are 120°. If there are four positioning blocks 420, the angles between any two adjacent positioning blocks 420 are 90°, and so on. Preferably, the elastic potential energy of each positioning elastic member 430 under the same elastic deformation is equal. The purpose of such a design is that when the header 053 of the pressure instrument 050 is clamped between at least three positioning blocks 420, since each positioning block 420 and the positioning elastic member 430 are distributed at equal angles on the inner side of the ring body 410, the axial center of the header 053 of the pressure instrument 050 can coincide with the axial center of the ring body 410.

[0082] The first end 541 of the positioning rod 540 is fixedly connected to the positioning ring 400, and the second end 542 of the positioning rod 540 is movably connected to the positioning column 530. If the height of the positioning ring 400 is increased, the positioning ring 400 will drive the positioning rod 540 to rise, so that the second end 542 of the positioning rod 540 moves upward along the positioning column 530. If the height of the positioning ring 400 is reduced, the positioning ring 400 will drive the positioning rod 540 to lower, so that the second end 542 of the positioning rod 540 moves downward along the positioning column 530. If the positioning ring 400 is rotated clockwise in a top-down angle If the positioning ring 400 is rotated counterclockwise when viewed from above, the positioning ring 400 will drive the positioning rod 540 to rotate counterclockwise, thereby causing the second end 542 of the positioning rod 540 to rotate counterclockwise around the positioning column 530. The positioning ring 400 is adapted to be clamped with the gauge head 053 of the pressure gauge 050. Therefore, the height and angle of the positioning ring 400 can be adjusted according to the gauge head 053 of the pressure gauge 050.

[0083] Preferably, for assisting the operation of the first motor, the embodiment of the present application provides a setting scheme for an angle sensor 620: for example, in some examples of the embodiments of the present application, the pressure detection device also includes an angle sensor 620; the angle sensor 620 is used to measure the relative angle between the second end 542 of the positioning rod 540 and the positioning column 530, and the signal output end of the angle sensor 620 is coupled to the control end of the first motor 321; the angle sensor 620 is arranged on the positioning rod 540 and connected to the positioning column 530, or the angle sensor is arranged on the positioning column and is connected to the positioning rod; the second end 542 of the positioning rod 540 The second end 542 automatically rotates with the positioning column 530, and the slide 520 automatically slides with the slide rail 510; for example, in some examples of the embodiments of the present application, the pressure detection device also includes an angle sensor 620; the angle sensor 620 is used to measure the relative angle between the second end 542 of the positioning rod 540 and the positioning column 530, and the signal output end of the angle sensor 620 is coupled with the control end of the first motor 321; the angle sensor is arranged on the positioning column and is connected to the positioning rod; the second end 542 of the positioning rod 540 automatically rotates with the positioning column 530, and the slide 520 automatically slides with the slide rail 510.

[0084] Specifically, the possible situations include: when the measuring end of the pressure instrument 050 is connected to the instrument connector 210, the dial 052 of the pressure instrument 050 is not facing forward, but has a small deflection. Since the angles between the two adjacent positioning blocks 420 are equal, the elastic potential energy of each positioning elastic member 430 under the same elastic deformation is equal. Therefore, when the positioning ring 400 is adapted to be clamped with the gauge head 053 of the pressure instrument 050, the ring body 410 will be affected by the elastic force of each positioning elastic member 430 and thus have the same deflection angle as the gauge head 053 of the pressure instrument 050, that is, the same deflection angle as the dial 052 of the pressure instrument 050. The first end 541 of the positioning rod 540 is fixedly connected to the positioning ring 400, so the positioning rod 540 will deflect together with the aforementioned deflection angle, and the positioning rod 540 The second end 542 and the positioning column 530 rotate automatically, and the deflection of the positioning rod 540 will drive the positioning column 530 to move. The positioning column 530 is fixed to the slide 520, and the slide 520 automatically slides with the slide rail 510, and the slide 520 will move with the positioning column 530, so that the aforementioned deflection angle is finally presented between the second end 542 of the positioning rod 540 and the positioning column 530. In the embodiment of the present application, the deflection angle is measured by setting an angle sensor 620, and the signal output end of the angle sensor 620 is coupled with the control end of the first motor 321, which can facilitate the adjustment of the first motor 321, thereby making the image module 610 and the dial 052 of the pressure instrument 050 deflect in the same direction, so that the image module 610 can capture images from the opposite direction, reducing the error caused by the deflection angle capture.

[0085] Preferably, for assisting the operation of the second motor, an embodiment of the present application provides a setting scheme for a stress sensor 630: for example, in some examples of the embodiments of the present application, the pressure detection device also includes a stress sensor 630: the stress sensor 630 is used to measure the elastic force of the positioning elastic member 430, and the signal output end of the stress sensor 630 is coupled with the control end of the second motor 322; the stress sensor 630 is arranged on the ring body and is connected to the positioning elastic member 430; the second end of the positioning rod slides freely along the positioning column; for another example, in some examples of the embodiments of the present application, the pressure detection device also includes a stress sensor 630: the stress sensor 630 is used to measure the elastic force of the positioning elastic member 430, and the signal output end of the stress sensor 630 is coupled with the control end of the second motor 322; the stress sensor is arranged on the positioning block and is connected to the positioning elastic member; the second end of the positioning rod slides freely along the positioning column.

[0086] Specifically, the possible situations include that the outer diameter of the gauge head 053 of the pressure instrument 050 may be different. When the positioning ring 400 is adapted to clamp the gauge head 053 of the pressure instrument 050, if the outer diameter of the gauge head 053 of the pressure instrument 050 is larger, the compression degree of the positioning elastic member 430 is larger, and the elastic force of the corresponding positioning elastic member 430 is larger. Corresponding to the outer diameter of the gauge head 053 of the pressure instrument 050, the center of the dial 052 is also higher. If the outer diameter of the gauge head 053 of the pressure instrument 050 is smaller, the compression degree of the positioning elastic member 430 is smaller, and the elastic force of the corresponding positioning elastic member 430 is larger. The elastic force is small, and the center of the dial 052 is also relatively low, corresponding to the outer diameter of the gauge head 053 of the pressure instrument 050. For example, when a new pressure instrument 050 is replaced for testing, if the outer diameter of the replaced pressure instrument 050 is larger than the outer diameter of the previous pressure instrument 050, the compression degree of the positioning elastic member 430 increases, and the elastic force of the positioning elastic member 430 increases. The stress sensor 630 measures the change in elastic force. The signal output end of the stress sensor 630 is coupled to the control end of the second motor 322. The second motor 322 can drive the image module 610 through the transmission belt 332. The image module 610 is moved upward so that the center of the image module 610 is as close as possible to the center of the dial of the pressure instrument 050. For example, if the outer diameter of the replaced pressure instrument 050 is the same as the outer diameter of the previous pressure instrument 050, the compression degree of the positioning elastic member 430 remains unchanged, the elastic force of the positioning elastic member 430 remains unchanged, and the stress sensor 630 measures the change in the elastic force. The signal output end of the stress sensor 630 is coupled to the control end of the second motor 322. The second motor 322 can control the height of the image module 610 through the transmission belt 332, so that the center of the image module 610 remains unchanged. The center is as close as possible to the center of the dial of the pressure instrument 050. For another example, if the outer diameter of the replaced pressure instrument 050 is smaller than the outer diameter of the previous pressure instrument 050, the compression degree of the positioning elastic member 430 is reduced, and the elastic force of the positioning elastic member 430 is reduced. The stress sensor 630 measures the change in the elastic force. The signal output end of the stress sensor 630 is coupled to the control end of the second motor 322. The second motor 322 can control the height of the image module 610 to be lowered through the transmission belt 332, so that the center of the image module 610 is as close as possible to the center of the dial of the pressure instrument 050.

[0087] Preferably, the aforementioned example structure is used to assist the embodiments of the present application. For example, in some examples of the embodiments of the present application, the pressure detection device also includes a locking structure; the locking structure is provided on the positioning column and is detachably connected to the positioning rod. When the locking structure is locked and connected to the positioning rod, the second end of the positioning rod is relatively fixed to the positioning column. When the locking structure is separated from the positioning rod, the second end of the positioning rod can move relative to the positioning column. For another example, in some examples of the embodiments of the present application, the pressure detection device also includes a locking structure; the locking structure is provided on the positioning rod and is detachably connected to the positioning column. When the locking structure is locked and connected to the positioning column, the second end of the positioning rod is relatively fixed to the positioning column. When the locking structure is separated from the positioning column, the second end of the positioning rod can move relative to the positioning column.

[0088] Specifically, exemplarily, the locking structure may include a first lock hole, a second lock hole and a lock bolt, wherein a plurality of first lock holes are provided on the positioning column, and a second lock hole is provided on the positioning rod. When locking is required, the second lock hole is aligned with one of the first lock holes, and the lock bolt is inserted into the first lock hole and the second lock hole. When unlocking is required, the lock bolt is taken out from the first lock hole and the second lock hole. Another exemplarily, the locking structure may include a first magnetic component and a second magnetic component, wherein a plurality of continuous first magnetic components are provided on the positioning column, and a second magnetic component is provided on the positioning rod. One of the first magnetic component and the second magnetic component is an electromagnetic component. When locking is required, the electromagnetic component is energized, and a first magnetic component and the second magnetic component are locked due to magnetic attraction. When unlocking is required, the power supply to the electromagnetic component is stopped, and the first magnetic component and the second magnetic component are separable. There are other examples, which are not listed here one by one.

[0089] During the preparation stage of the pressure detection process, the locking structure can be set to the unlocked state first, so as to facilitate the adjustment of the relative position between the positioning rod and the positioning column. After the adjustment is completed, the locking structure can be set to the locked state to limit or fix the positioning rod and the positioning column, thereby reducing the impact of fluctuations during the pressure detection process.

[0090] Reference Figure 7 and Figure 8 As shown, during the pressure detection process, the positioning block 420 abuts against the outer periphery of the gauge head 053 of the pressure instrument 050 . At this time, the dial 052 of the pressure instrument 050 faces forward, that is, the direction where the image module 610 is located.

[0091] In some cases, reference to Figure 7As shown, the pressure instrument 050 is a radial pressure instrument, and correspondingly, the pressure detection device includes a first working posture. In the first working posture, the slide 520 is located at the first part of the slide rail 510, and the pressure output port 211 is coaxial with the adapter block 230 and faces away from the base 100; specifically, the slide 520 is located at the first part of the slide rail 510, and correspondingly, the positioning ring 400 is located above the instrument connector 210, and the measuring end 051 of the pressure instrument 050 passes through the opening 440 of the positioning ring 400 and is located below the positioning ring 400. The instrument connector 210 is rotated to a direction coaxial with the adapter block 230. At this time, the pressure output port 211 is facing upward and coaxial with the adapter block 230. The measuring end 051 of the pressure instrument 050 is connected to the instrument interface 210, and the pressure output port 211 is connected to the measuring end 051 of the pressure instrument 050. The pressure medium can be transmitted between the ends 051 to start pressure detection. The pressure medium with the detection pressure is provided by the pressure generating device. The pressure medium enters the internal pipeline of the base 100 from the pressure input port 111, flows to the pressure chamber 240 through the internal pipeline of the base 100, and then flows from the pressure chamber 240 to the internal pipeline of the adapter block 230. After passing through the connection structure between the adapter block 230 and the instrument connector 210, the pressure medium flows from the adapter block 230 to the inside of the instrument connector 210, and then flows from the inside of the instrument connector 210 to the pressure output port 211. The pressure output port 211 is connected to the measuring end 051 of the pressure instrument 050, so that the pressure medium is transmitted to the measuring end 051 of the pressure instrument 050. The pressure instrument 050 measures the medium pressure of the pressure medium, and the pressure instrument 050 can be detected based on the measurement results.

[0092] In other cases, reference is made to Figure 8As shown, the pressure instrument 050 is an axial pressure instrument, and correspondingly, the pressure detection device includes a second working posture. In the second working posture, the slide 520 is located at the second part of the slide rail 510, the pressure output port 211 faces the first direction, and the central axis of the pressure output port 211 is perpendicular to the central axis of the adapter block 230; specifically, the slide 520 is located at the second part of the slide rail 510, and correspondingly, the positioning ring 400 is located in front of the instrument connector 210, and the distance between the positioning ring 400 and the instrument connector 210 can be determined according to the axial length of the pressure instrument 050. The instrument connector 210 is rotated to a direction perpendicular to the axial direction of the adapter block 230. At this time, the pressure output port 211 faces the forward direction, and the axial direction of the pressure output port 211 is perpendicular to the axial direction of the adapter block 230. The measuring end 051 of the pressure instrument 050 is connected to the instrument interface 210, and the pressure output port 211 is perpendicular to the measuring end 0 of the pressure instrument 050. 51, the height of the positioning ring 400 is adjusted up and down so that the positioning ring 400 can adapt to clamp the outer periphery of the header 053 of the pressure instrument 050, and the pressure detection is started. The pressure medium with the detection pressure is provided by the pressure generating device. The pressure medium enters the internal pipeline of the base 100 from the pressure input port 111, flows to the pressure chamber 240 through the internal pipeline of the base 100, and then flows from the pressure chamber 240 to the internal pipeline of the adapter block 230. After passing through the connection structure between the adapter block 230 and the instrument connector 210, the pressure medium flows from the adapter block 230 to the inside of the instrument connector 210, and then flows from the inside of the instrument connector 210 to the pressure output port 211. The pressure output port 211 is connected to the measuring end 051 of the pressure instrument 050, so that the pressure medium is transmitted to the measuring end 051 of the pressure instrument 050. The pressure instrument 050 measures the medium pressure of the pressure medium, and the pressure instrument 050 can be detected according to the measurement results.

[0093] Based on the aforementioned pressure detection device in the embodiment of the present application, the embodiment of the present application further provides a pressure detection system. In some examples of the embodiment of the present application, such as Figure 9 As shown, a pressure detection system is used to detect the pressure instrument 050, including: a pressure detection device as described in any of the aforementioned examples in the embodiments of the present application; a pressure controller 710, used to provide detection pressure, the pressure output end of the pressure controller 710 is connected to the pressure input port 111 of the pressure detection device; a reference pressure measuring module 720, used to measure the medium pressure, the measuring end of the reference pressure measuring module 720 is connected to the output end of the pressure controller 710, and the accuracy of the reference pressure measuring module 720 is higher than the accuracy of the pressure instrument 050.

[0094] Specifically, the pressure controller 710 can adjust the medium pressure of the pressure medium to reach the detection pressure. The pressure controller 710 can be a pressure controller product of the prior art. It can be understood that the specific implementation of the pressure controller 710 does not affect the implementation of the embodiment of the present application. It is mainly sufficient that it can provide the medium pressure required for detection. The pressure output end of the pressure controller 710 is connected to the pressure input port 111 of the pressure detection device. The connection can be a contact connection or can be achieved through a pipeline. Based on this connection, the pressure medium with the detection pressure can be transferred from the pressure output end of the pressure controller 710 to the pressure input port 111 of the pressure detection device. Its flow process inside the pressure detection device can refer to the aforementioned content of the embodiment of the present application, which will not be repeated here. Referring to the pressure measuring module 720, it can be a pressure A pressure gauge, pressure sensor or other pressure measuring device is used. The measuring end of the reference pressure measuring module 720 is connected to the output end of the pressure controller 710, and the pressure medium with the detection pressure can be transmitted from the pressure output end of the pressure controller 710 to the measuring end of the reference pressure measuring module 720. During the pressure detection process, the reference pressure measuring module 720 and the pressure instrument 050 jointly measure the pressure medium with the detection pressure, and a reference measurement value is obtained according to the measurement result of the reference pressure measuring module 720, and a pressure value to be measured is obtained according to the measurement result of the pressure instrument 050. Since the accuracy of the reference pressure measuring module 720 is higher than that of the pressure instrument 050, the reference measurement value can be used as the true value of the detection pressure or as a reference value of the true value of the detection pressure. The reference measurement value and the pressure value to be measured are processed according to the detection purpose to obtain the detection result.

[0095] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A pressure detection device for detecting a pressure instrument, characterized in that: include: base; An instrument connector, used to connect the pressure instrument, and a pressure output port is provided on the instrument connector; A pressure input port, used to connect to a pressure generating device, the pressure input port being provided on the base and connected to the pressure output port via a pipeline; An instrument base is fixedly mounted on the first end surface of the base, wherein an internal thread groove is provided on the instrument base, and a notch of the internal thread groove faces away from the base; an adapter block, wherein a first portion of the adapter block is threadedly connected to the internal thread groove, and a second portion of the adapter block is rotatably connected to the instrument connector; An image base is provided on a first end surface of the base, and the image base is located in a first direction of the instrument base; An image module, used for collecting an image of the dial of the pressure instrument, wherein the image module is arranged on the image base; a positioning ring comprising a ring body and at least three positioning blocks, wherein the inner diameter of the ring body is larger than the outer diameter of the gauge head of the pressure instrument, the positioning blocks are connected to the inner ring of the ring body via positioning elastic members, and the ring body is provided with an opening on a side close to the base; a slide rail disposed on the second end surface of the base, wherein a first portion of the slide rail is located corresponding to the instrument base, a second portion of the slide rail is located corresponding to between the instrument base and the image base, and the slide rail extends along the first direction; a slide seat, the slide seat being slidably connected to the slide rail; A positioning column is fixed on the slide, and an extending direction of the positioning column is perpendicular to the first end surface of the base; a positioning rod, wherein a first end of the positioning rod is fixedly connected to the positioning ring, and a second end of the positioning rod is movably connected to the positioning post, so that the positioning rod can move along the extension direction of the positioning post and can also rotate around the positioning post; During the pressure detection process, the positioning block abuts against the outer periphery of the gauge head of the pressure instrument. In the first working posture, the slide is located in the first part of the slide rail, the pressure output port is coaxial with the adapter block and faces away from the base. In the second working posture, the slide is located in the second part of the slide rail, the pressure output port faces the first direction, and the central axis of the pressure output port is perpendicular to the central axis of the adapter block.

2. The pressure detection device according to claim 1, characterized in that: The image base comprises: An image positioning component, the image module is disposed on the image positioning component, and the image positioning component is movably connected to the first end surface of the base; The first motor is used to output torque. The first motor is drivingly connected to the image positioning assembly through a driving rod. The extending direction of the driving rod is perpendicular to the first end surface of the base.

3. The pressure detection device according to claim 2, characterized in that: Also includes an angle sensor; The angle sensor is used to measure the relative angle between the second end of the positioning rod and the positioning column, and the signal output end of the angle sensor is coupled to the control end of the first motor; The angle sensor is provided on the positioning rod and connected to the positioning column, or the angle sensor is provided on the positioning column and is operatively connected to the positioning rod; The second end of the positioning rod automatically rotates with the positioning column, and the sliding seat automatically slides with the sliding rail.

4. The pressure detection device according to claim 2, characterized in that: The image positioning component includes: An image support seat connected to the driving rod; An image positioning block, on which the image module is arranged; An image support rod, one end of which is fixed to the image support seat, the image positioning block is movably connected to the image support rod, and the extension direction of the image support rod is perpendicular to the first end surface of the base; The second motor is used to output torque. The second motor is driven and connected to the image positioning block through a transmission belt, so that the image positioning block moves along the extension direction of the image support rod, or the relative position of the image positioning block and the image support rod is fixed.

5. The pressure detection device according to claim 4, characterized in that: Also includes stress sensors: The stress sensor is used to measure the elastic force of the positioning elastic member, and the signal output end of the stress sensor is coupled to the control end of the second motor; The stress sensor is arranged on the ring body and connected to the positioning elastic member, or the stress sensor is arranged on the positioning block and connected to the positioning elastic member; The second end of the positioning rod slides freely along the positioning column.

6. The pressure detection device according to claim 3 or 5, characterized in that: The angles between two adjacent positioning blocks are equal, and the elastic potential energies of the positioning elastic members under the same elastic deformation are equal.

7. The pressure detection device according to claim 3 or 5, characterized in that: Also includes a locking structure; The locking structure is provided on the positioning post and is detachably connected to the positioning rod. When the locking structure is locked with the positioning rod, the second end of the positioning rod and the positioning post are relatively fixed. When the locking structure is separated from the positioning rod, the second end of the positioning rod and the positioning post can move relative to each other. or, The locking structure is arranged on the positioning rod and is detachably connected to the positioning column. When the locking structure is locked and connected to the positioning column, the second end of the positioning rod and the positioning column are relatively fixed. When the locking structure is separated from the positioning column, the second end of the positioning rod and the positioning column can move relative to each other.

8. The pressure detection device according to claim 1, characterized in that: The adapter block is sealed to the internal thread groove, so that a pressure chamber is formed between the adapter block and the bottom of the internal thread groove; A first connection port is provided at the bottom of the internal thread groove, the first connection port being connected to the pressure chamber, and the first connection port being connected to the pressure input port through an internal pipeline of the base; A second connection port is provided on the adapter block, the second connection port is arranged opposite to the first connection port, the second connection port is connected to the pressure chamber, and the second connection port is connected to the pressure output port through a pipeline.

9. The pressure detection device according to claim 8, characterized in that: A first rotating hole is provided on the second portion of the adapter block, a first annular communicating groove is provided on the inner side of the first rotating hole, the first communicating groove is connected to the second connecting port via the internal pipeline of the adapter block, a first rotating shaft is provided on the instrument joint, the first rotating hole and the first rotating shaft are coaxially sleeved, a third connecting port is provided on the side wall of the first rotating shaft, the position of the third connecting port corresponds to the first communicating groove, so that the third connecting port is connected to the first communicating groove, and the third connecting port is connected to the pressure output port via the internal pipeline of the instrument joint; a second rotating hole is provided on the second portion of the adapter block, the second rotating hole is coaxial with the first rotating hole, a second rotating shaft is provided on the instrument joint, the second rotating hole and the second rotating shaft are coaxially sleeved; or, A first rotating hole is provided on the second portion of the adapter block, a first annular communicating groove is provided on the inner side of the first rotating hole, the first communicating groove is connected to the second connecting port via the internal pipeline of the adapter block, a first rotating shaft is provided on the instrument joint, the first rotating hole and the first rotating shaft are coaxially sleeved, a third connecting port is provided on the side wall of the first rotating shaft, the position of the third connecting port corresponds to the first communicating groove, so that the third connecting port is connected to the first communicating groove, and the third connecting port is connected to the pressure output port via the internal pipeline of the instrument joint; a second rotating shaft is provided on the second portion of the adapter block, the second rotating shaft is coaxial with the first rotating hole, a second rotating hole is provided on the instrument joint, the second rotating hole and the second rotating shaft are coaxially sleeved; or, A third rotating shaft is provided on the second part of the adapter block, and a fourth connecting port is provided on the side wall of the third rotating shaft. The fourth connecting port is connected to the second connecting port through the internal pipeline of the adapter block. A third rotating hole is provided on the instrument joint, and the third rotating hole is coaxially sleeved with the third rotating shaft. An annular second communicating groove is provided on the inner side of the third rotating hole, and the position of the second communicating groove corresponds to the fourth connecting port, so that the second communicating groove is connected to the fourth connecting port, and the second communicating groove is connected to the pressure output port through the internal pipeline of the instrument joint; a fourth rotating shaft is provided on the second part of the adapter block, and the fourth rotating shaft is coaxial with the third rotating shaft. A fourth rotating hole is provided on the instrument joint, and the fourth rotating hole is coaxially sleeved with the fourth rotating shaft; or, A third rotating shaft is provided on the second part of the adapter block, and a fourth connecting port is provided on the side wall of the third rotating shaft. The fourth connecting port is connected to the second connecting port through the internal pipeline of the adapter block. A third rotating hole is provided on the instrument joint, and the third rotating hole is coaxially sleeved with the third rotating shaft. An annular second communicating groove is provided on the inner side of the third rotating hole, and the position of the second communicating groove corresponds to the fourth connecting port, so that the second communicating groove is connected to the fourth connecting port, and the second communicating groove is connected to the pressure output port through the internal pipeline of the instrument joint; a fourth rotating hole is provided on the second part of the adapter block, and the fourth rotating hole is coaxial with the third rotating shaft. A fourth rotating shaft is provided on the instrument joint, and the fourth rotating hole is coaxially sleeved with the fourth rotating shaft.

10. A pressure detection system for detecting a pressure instrument, characterized in that: include: The pressure detection device according to any one of claims 1 to 9; A pressure controller, used to provide detection pressure, wherein the pressure output end of the pressure controller is connected to the pressure input port of the pressure detection device; A reference pressure measuring module is used to measure the medium pressure. The measuring end of the reference pressure measuring module is connected to the output end of the pressure controller. The accuracy of the reference pressure measuring module is higher than that of the pressure instrument.

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