Detection and calibration device for pressure transmitter production

Abstract

The invention discloses a detection and calibration device for pressure transmitter production, and relates to the technical field of pressure transmitter production. The device comprises a shell, a first container and a second container are arranged in the shell, the first container is communicated to a gas supply pipeline through a branch pipe A, and the second container is communicated to one end of the gas supply pipeline through a branch pipe B; the other end of the gas supply pipeline is communicated with a detection pipeline, and two ends of the detection pipeline are respectively communicated with a connector A and a connector B; the air supply pipeline is also communicated with an air pump or a pressurizing device; when in use, a digital pressure calibrator and a pressure transmitter to be calibrated are respectively arranged on the connecting joint A and the connecting joint B. According to the invention, the first container and the second container are arranged in the shell, and the first container and the second container are sleeved in use, so that the internal air pressure of a detection system composed of the detection pipeline, the first container and the second container is accurately adjusted according to requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure transmitter production, and in particular relates to a detection and calibration device for pressure transmitter production. Background Art

[0002] A pressure transmitter is a device that converts pressure into pneumatic or electric signals for control and remote transmission. It can convert physical pressure parameters such as gas and liquid sensed by the pressure measuring element sensor into standard electrical signals (such as 4-20mADC, etc.) to supply indicator alarms, recorders, and regulators; static pressure accuracy is one of the most important accuracies of all pressure transmitters, so static pressure detection is a process that must be completed by the pressure transmitter. In the existing technology, air pressure detection is generally used to keep the pressure transmitter in working condition and realize pressure detection.

[0003] For example, CN218035508U discloses a portable pressure transmitter detection device, comprising a box cover and a box body hinged to each other, a detection assembly is arranged in the box body, the detection assembly comprises a U-shaped tube, both ends of the U-shaped tube are connected with threaded connectors, the U-shaped tube is connected with a three-way tube, both ends of the three-way tube are connected with rotary joints, the end of the rotary joint away from the three-way tube is connected with connecting tube 2, the end of connecting tube 2 away from the rotary joint is connected with connecting tube 1, a valve is arranged between connecting tube 2 and connecting tube 1, the end of connecting tube 1 away from the valve is respectively connected with an air pump and a water pump, and the detection assembly also comprises a digital pressure calibrator; when in use, it is inconvenient to accurately adjust the air pressure in the U-shaped tube to the required range according to demand. Summary of the invention

[0004] The object of the present invention is to provide a detection and calibration device for the production of a pressure transmitter. By arranging a first container and a second container in a shell, the first container and the second container are put together during use, and then the internal air pressure of the detection system composed of a detection pipeline, the first container and the second container is accurately adjusted according to needs, thereby solving the problems raised by the background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a detection and calibration device for production of pressure transmitters, comprising a shell, in which a first container with a volume of V1 and a second container with a volume of V2 are arranged, the first container is connected to an air supply pipeline through a branch pipe A, and the second container is connected to one end of the air supply pipeline through a branch pipe B; the other end of the air supply pipeline is connected to a detection pipeline, and the two ends of the detection pipeline are respectively connected to a connecting joint A and a connecting joint B; one side of the air supply pipeline is also connected to an air intake pipe, an air intake valve is arranged on the air intake pipe, and an air pump or a pressurizing device is connected to the end thereof; when in use, a digital pressure calibrator and a pressure transmitter to be detected are respectively installed on the connecting joint A and the connecting joint B; a touch panel is arranged on the shell, and the touch panel is connected to the digital pressure calibrator, the air pump, and the air intake valve.

[0007] Further, the first container is a cylindrical structure, one end of the first container is provided with an opening A connected to the branch pipe A, the other end is provided with a through hole A, and a piston A sealingly sliding along the inner wall thereof is provided in the first container; the first container is placed horizontally, an adjusting bolt A is threadedly connected to the shell, the adjusting bolt A passes through the through hole A and abuts against one side of the piston A; the second container is a cylindrical structure, the second container is in a vertical direction, and a through hole B and an opening B are respectively provided on the top and bottom of the second container, the opening B is connected to the branch pipe B; a piston B sealingly sliding along the inner wall thereof is provided in the second container, the two sides of the piston B are respectively connected with a spring 1 A and a spring 1 B, the ends of the spring 1 A and the spring 1 B are respectively connected to the inner top side and bottom side of the second container; an adjusting bolt B is threadedly connected to the shell, the adjusting bolt B passes through the through hole B and abuts against the upper surface of the piston B.

[0008] Furthermore, an air outlet pipe is fixed on the first container, and a through hole A is provided on the piston A, which is sealed with the air outlet pipe; the air outlet pipe movably passes through the through hole A; the end of the air outlet pipe located on the outside of the first container is connected with a connecting pipe A, the end of the connecting pipe A is connected to the air inlet end of the circulation pump, the air outlet end of the circulation pump is connected to the air inlet pipe, the end of the air inlet pipe is connected to three connecting pipes B, and the air outlet end of the air outlet pipe is connected to the air supply pipeline, the connecting joint A and the connecting joint B; the connecting pipe A and the air inlet pipe are respectively provided with a temperature sensor A and a temperature sensor B, and a semiconductor refrigeration module is provided in the connecting pipe A between the temperature sensor A and the circulation pump; the semiconductor refrigeration module, the temperature sensor A and the temperature sensor B are connected to the touch panel.

[0009] Furthermore, the touch panel is also connected to a temperature sensor C arranged in the environment.

[0010] Furthermore, ventilation holes A and ventilation holes B are respectively provided at two ends of the shell; filters are provided at both ventilation holes A and ventilation holes B; and exhaust fans are provided at ventilation holes A / ventilation holes B.

[0011] Furthermore, the detection pipeline is connected with an exhaust pipe, and the top of the exhaust pipe passes through the shell; a partition with air holes is arranged in the exhaust pipe, and a support plate is fixed on the inner wall of the exhaust pipe above the partition, and the bottom side of the support plate is connected with a sealing plate cooperating with the partition through spring 2; a threaded structure is arranged on the top outer wall of the exhaust pipe, and a threaded sleeve is threadedly connected to the threaded structure, an exhaust hole is arranged on the bottom side of the threaded sleeve, a push rod is connected to the bottom side of the threaded sleeve, a through hole B for the push rod to pass through is arranged on the support plate, and the push rod is sealed and matched with the through hole B; an overflow detection tube is connected to the support plate, and a gas flow meter connected to the touch panel is arranged in the overflow detection tube.

[0012] Furthermore, a valve structure A is provided on the detection pipeline between the exhaust pipe and the connecting joint B, and the valve structure A includes a valve body, which is a cylindrical structure and is provided with an opening 1 and an opening 2 at a first height and a second height respectively; a limit ring A is provided on the inner wall of the valve body between the opening 1 and the opening 2; a limit ring B is provided in the valve body above the limit ring A; a valve core structure is provided in the valve body between the limit ring A and the limit ring B; the valve core structure includes a piston 1 and a piston B which slide sealingly along the inner wall of the valve body, and a plurality of connecting columns are connected between the piston 1 and the piston 2; an adjusting bolt C is also threadedly connected to the shell, and the end of the adjusting bolt C passes through the opening C provided at the top of the valve body, and the end of the adjusting bolt C abuts against the upper surface of the piston 2; a spring 3 A is connected between the piston 2 and the top side surface of the valve body, and a spring 3 B is connected between the piston 1 and the bottom side surface of the valve body.

[0013] Furthermore, a guide sleeve cooperating with the limit ring B is arranged on the upper surface of the piston 2, and a vent hole is arranged on the peripheral side wall of the guide sleeve; a guide column is connected to the bottom side of the piston 1, and a guide hole cooperating with the guide column is arranged on the limit ring A.

[0014] Furthermore, a valve structure B is connected to the air supply pipeline, and the valve structure B has the same structure as the valve structure A; an adjusting bolt D with its end resting on the upper surface of the second piston is threadedly connected to the shell.

[0015] Furthermore, the pressurizing device includes a piston cylinder, and the inner bottom side surface of the piston cylinder is connected to a movable plate that slides sealingly along the inner wall of the piston cylinder through a number of elastic guiding telescopic parts; the bottom side surface of the piston cylinder is connected to the intake pipe and the exhaust pipe, and the intake pipe and the exhaust pipe are respectively provided with a one-way valve A and a one-way valve B; a cross beam is provided on the top of the piston cylinder, and a guide sleeve is provided on the cross beam, and a movable column is provided in the guide sleeve, and a top plate is provided on the top of the movable column, and a spring four is connected between the top plate and the guide sleeve; it also includes a motor and a lifting platform, the motor is installed on the lifting platform, and the bottom of the lifting platform is connected to a lifting member that drives the lifting platform to rise and fall, and the output shaft of the motor is connected to an elliptical driving block, and the outer peripheral side wall of the driving block is against the upper surface of the top plate; the motor and the lifting member are both connected to the touch panel.

[0016] The present invention has the following beneficial effects:

[0017] The present invention arranges a first container and a second container in a shell, and when in use, the first container and the second container are sheathed, thereby accurately adjusting the internal air pressure of the detection system composed of the detection pipeline, the first container and the second container according to demand.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the right viewing angle structure of the detection and calibration device in Example 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the left side viewing angle structure of the detection and calibration device in Example 1 of the present invention;

[0022] Figure 3 This is a schematic diagram of the main viewing angle structure of the detection and calibration device in Example 1 of the present invention;

[0023] Figure 4 Schematic diagram of the detection and calibration component structure in Example 1 of the present invention Figure 1 ;

[0024] Figure 5 Schematic diagram of the detection and calibration component structure in Example 1 of the present invention Figure 2 ;

[0025] Figure 6This is a schematic diagram of the structure of the detection and calibration component in Example 2 of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a detection and calibration device according to Embodiment 2 of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the detection and calibration component in Example 3 of the present invention;

[0028] Fig. 9 This is a schematic diagram of the structure of the first container of the present invention;

[0029] Fig.10 This is a schematic diagram of the exhaust pipe structure of the present invention;

[0030] Fig.11 This is a schematic diagram of the structure of the second container of the present invention;

[0031] Fig.12 This is a schematic diagram of the structure of the valve structure A of the present invention;

[0032] Fig.13 The structure of the pressurizing device in Example 4 of the present invention is shown in FIG. Figure 1 ;

[0033] Fig.14 The structure of the pressurizing device in Example 4 of the present invention is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] Embodiment 1:

[0037] See also Figure 1-5 As shown, the present invention is a detection and calibration device for pressure transmitter production, including a housing 1 and a detection and calibration component arranged in the housing 1. When in use, the digital pressure calibrator 101 and the pressure transmitter to be detected 102 are controlled to be connected to each other.

[0038] That is, the detection and calibration assembly provided by the present invention includes a first container 130 with a volume V1 and a second container 140 with a volume V2, wherein the cross-sectional area ratio of the first container 130 to the second container 140 is 10:1, and the volume ratio of the first container 130 to the second container 140 is 20:1; wherein the first container 130 is connected to an air supply pipeline 111 through a branch pipe A114, and the second container 140 is connected to one end of the air supply pipeline 111 through a branch pipe B; the other end of the air supply pipeline 111 is connected to a detection pipeline 110, and the two ends of the detection pipeline 110 are respectively connected to a connecting joint A11 and a connecting joint A12. Connector B12; one side of the air supply pipeline 111 is also connected to an air inlet pipe 112, on which an air inlet valve 113 is arranged, and an air pump or a pressurizing device is connected to the end thereof; when in use, the digital pressure calibrator 101 and the pressure transmitter 102 to be inspected are respectively assembled to the connecting connector A11 and the connecting connector B12; at the same time, the touch panel 10 is connected to the digital pressure calibrator 101, the air pump or the pressurizing device, and the air inlet valve 113; when in use, the air pump or the pressurizing device is used to adjust the internal space pressure of the first container 130 and the second container 140 to the required pressure, and then the pressure transmitter 102 to be inspected is inspected and calibrated after maintaining it for a period of time.

[0039] At the same time, in order to facilitate the adjustment of the internal pressure of the space composed of the first container 130 and the second container 140, rough adjustment can be performed through the first container 130 during use, and fine adjustment can be performed through the second container 140, that is, the internal effective volume of the detection and calibration assembly composed of the first container 130 and the second container 140 needs to be adjusted during use.

[0040] Specifically, the first container 130 and the second container 140 provided by the present invention are both cylindrical structures, and the first container 130 and the second container 140 are placed horizontally and vertically, respectively.

[0041] Among them, Fig. 9 One end of the first container 130 is provided with an opening A131 connected to the branch pipe A114, and the other end is provided with a through hole A132. A piston A133 sealingly sliding along the inner wall is provided in the first container 130; the first container 130 is placed horizontally, and an adjusting bolt A13 is threadedly connected to the shell 1. The adjusting bolt A13 passes through the through hole A132 and abuts against one side of the piston A133; when in use, the adjusting bolt A13 is rotated to abut the piston A133 to seal and slide along the inner wall of the first container 130, thereby adjusting the effective volume of the first container 130, so as to achieve coarse adjustment of the effective volume inside the detection and calibration component.

[0042] Among them, Fig.11A through hole B142 and an opening B141 are respectively provided at the top and bottom of the second container 140, and the opening B141 is connected to the branch pipe B; a piston B143 is provided in the second container 140 and slides along its inner wall in a sealed manner, and a spring A144 and a spring B145 are respectively connected to the two sides of the piston B143, and the ends of the spring A144 and the spring B145 are respectively connected to the inner top side and bottom side of the second container 140; an adjusting bolt B14 is threadedly connected to the shell 1, and the adjusting bolt B14 passes through the through hole B142 and abuts against the upper surface of the piston B143; when in use, the adjusting bolt B14 is rotated until its end abuts against one side of the piston B143 and drives the piston B143 to slide in a sealed manner along the inner wall of the first container 130, thereby adjusting the effective volume of the second container 140, so as to achieve fine adjustment of the effective volume inside the detection and calibration component.

[0043] Example 2. Based on Example 1, when the amount of internal gas in the detection and calibration assembly composed of the first container 130 and the second container 140 increases, that is, the internal air pressure increases, the internal air temperature increases. The temperature increase will affect the accuracy of the detection. Therefore, the present invention needs to adjust the internal temperature of the detection and calibration assembly during use, so that when the internal temperature of the detection and calibration assembly increases, the internal gas is cooled down so that the internal temperature of the detection and calibration assembly is equivalent to the ambient temperature.

[0044] That is, in the above, if Figure 6 An air outlet pipe 170 is fixed on the first container 130, and a through hole A is provided on the piston A133, which is sealed with the air outlet pipe 170. The air outlet pipe 170 movably passes through the through hole A, and one end of the air outlet pipe 170 located outside the first container 130 is connected with a connecting pipe A171, and the end of the connecting pipe A171 is connected to the air inlet end of the circulation pump 17, and the air outlet end of the circulation pump 17 is connected to the air inlet pipe 174, and the end of the air inlet pipe 174 is connected to three connecting pipes B172, and the outlet end of the air outlet pipe 172 is connected to the air supply pipeline 111, the connecting joint A11 and the connecting joint B12.

[0045] To achieve temperature control, temperature sensor A and temperature sensor B are respectively provided on the connecting pipe A171 and the air inlet pipe 174, and a semiconductor refrigeration module is provided in the connecting pipe A171 between the temperature sensor A and the circulation pump 17, and the semiconductor refrigeration module, temperature sensor A and temperature sensor B are connected to the touch panel 10; in order to automatically adjust the internal temperature of the detection and calibration component to make it equivalent to the ambient temperature, the touch panel 10 is also connected to a temperature sensor C set in the environment, and then when in use, the temperature sensor C is used to determine whether the internal temperature of the detection and calibration component needs to be adjusted to the target temperature T1, and the temperature sensor A is used to adjust the temperature of the gas drawn into the circulation pump 17, so as to facilitate the control of the temperature adjustment result, and the setting of the temperature sensor B facilitates the adjustment of the refrigeration efficiency of the semiconductor refrigeration module.

[0046] For example, when the temperature T2 detected by the temperature sensor A is 3°C higher than the target temperature T1, the semiconductor refrigeration module is controlled to operate at maximum power; when the temperature T2 detected by the temperature sensor A is 2°C-3°C higher than the target temperature T1, the semiconductor refrigeration module is controlled to operate at 75% of the operating power; when the temperature T2 detected by the temperature sensor A is 1°C-2°C higher than the target temperature T1, the semiconductor refrigeration module is controlled to operate at 50% of the operating power.

[0047] Of course, when in use, in order to facilitate cooling of the detection and calibration component as a whole, ventilation holes A103 and ventilation holes B104 are respectively opened at both ends of the shell 1; filters are set at ventilation holes A103 and ventilation holes B104; exhaust fans are set at ventilation holes A103 / ventilation holes B104, and then when in use, the exhaust fan is used to control external air to enter the interior and blow it to the detection and calibration component as a whole to complete the cooling of the detection and calibration component as a whole.

[0048] Example 3, based on Example 1, it can be known that when a pressure transmitter 102 to be tested is tested and calibrated, the internal air pressure of the test and calibration component is high, and it is necessary to exhaust the internal air of the test and calibration component. Based on this requirement, an exhaust pipe 160 is connected to the test pipeline 110, such as Fig.10, the top of the exhaust pipe 160 passes through the shell 1; a baffle 163 with an air hole is provided in the exhaust pipe 160, a support plate 164 is fixed on the inner wall of the exhaust pipe 160 above the baffle 163, and the bottom side of the support plate 164 is connected to a sealing plate 167 that cooperates with the baffle 163 through a spring 166; a threaded structure is provided on the top outer wall of the exhaust pipe 160, and a threaded sleeve 16 is threadedly connected to the threaded structure, an exhaust hole 162 is provided on the bottom side of the threaded sleeve 16, a push rod 161 is connected to the bottom side of the threaded sleeve 16, and a through hole 162 for the push rod 161 to pass through is provided on the support plate 164 Through hole B168, the push rod 161 is sealed with the through hole B168; the support plate 164 is connected to the overflow detection tube 165, and the overflow detection tube 165 is provided with a gas flow meter connected to the touch panel 10, and then when exhaust is needed, the threaded sleeve 16 is controlled to rotate, and then the push rod 161 is used to push the sealing plate 167, and then the sealing plate 167 is driven to separate from the partition 163, so as to facilitate the control of exhaust when in use; and when in use, the setting of the gas flow meter is utilized, which is actually convenient for detecting whether the sealing plate 167 and the partition 163 are sealed when in use.

[0049] Embodiment 4, based on Embodiment 1, it can be known that when a pressure transmitter 102 to be inspected is inspected and calibrated, it is necessary to remove the pressure transmitter 102 to be inspected after the inspection and calibration is completed, and then install a new pressure transmitter 102 to be inspected. At this time, it is necessary to cut off the detection pipeline 110 and the connecting joint B12, such as Figure 7-8 , and then a valve structure A is provided on the detection pipeline 110 between the exhaust pipe 160 and the connecting joint B12, such as Fig.12The valve structure A includes a valve body 150, which is a cylindrical structure and has an opening 1501 and an opening 1502 at a first height and a second height, respectively; a limit ring A152 is provided on the inner wall of the valve body 150 between the opening 1501 and the opening 1502; a limit ring B156 is provided in the valve body 150 above the limit ring A152; a valve core structure is provided in the valve body 150 between the limit ring A152 and the limit ring B156; the valve core structure includes a piston 153 and a piston B154 which are sealed and slide along the inner wall of the valve body 150, and the piston A plurality of connecting columns 155 are connected between piston one 153 and piston two 154; an adjusting bolt C15 is also threadedly connected to the housing 1, and the end of the adjusting bolt C15 passes through the opening C151 arranged at the top of the valve body 150, and the end of the adjusting bolt C15 abuts against the upper surface of the piston two 154; a spring three A1542 is connected between the piston two 154 and the inner top side surface of the valve body 150, and a spring three B1532 is connected between the piston one 153 and the inner bottom side surface of the valve body 150, and then after completing one inspection, the valve structure A is controlled to be closed, and then the old pressure transmitter 102 to be inspected is disassembled and then installed.

[0050] After the above implementation controls the old pressure transmitter 102 to be inspected to perform inspection and calibration on 1Mpa, 2Mpa, 3Mpa and 4Mpa in sequence, the new pressure transmitter 102 to be inspected is controlled to perform inspection and calibration on 4Mpa, 3Mpa, 2Mpa and 1Mpa in sequence.

[0051] Of course, when in use, a valve structure B180 can also be provided on the air supply pipeline 111, and the valve structure B180 has the same structure as the valve structure A; an adjusting bolt D18 is threadedly connected to the housing 1, and its end rests on the upper surface of the piston 2 154, and its implementation principle is the same as that of the above-mentioned valve structure A.

[0052] At the same time, a guide sleeve 1541 is provided on the upper surface of piston 2 154 and cooperates with the limit ring B156, and a ventilation hole is provided on the peripheral side wall of the guide sleeve 1541; a guide column 1531 is connected to the bottom side of piston 153, and a guide hole cooperating with the guide column 1531 is provided on the limit ring A152.

[0053] Embodiment 4, as Figure 13-14As shown, on the basis of embodiments 1-3, the pressurizing device provided by the present invention includes a piston cylinder 20, and the inner bottom side of the piston cylinder 20 is connected to a movable plate 21 that slides along the inner wall of the piston cylinder 20 through a plurality of elastic guide telescopic parts 22; the bottom side of the piston cylinder 20 is connected to an air intake pipe 23 and an air discharge pipe 24, and a one-way valve A231 and a one-way valve B241 are respectively arranged on the air intake pipe 23 and the air discharge pipe 24; a crossbeam is arranged on the top of the piston cylinder 20, a guide sleeve 25 is arranged on the crossbeam, and an movable column 22 is arranged in the guide sleeve 25. 6. A top plate 27 is arranged on the top of the movable column 26, a spring 28 is connected between the top plate 27 and the guide sleeve 25, and a motor is also included. An elliptical driving block 29 is connected to the output shaft of the motor, and the outer peripheral side wall of the driving block 29 is against the upper surface of the top plate 27; that is, when in use, by controlling the rotation of the motor, and then utilizing the action of the driving block 29, the movable plate 21 is controlled to move up and down reciprocatingly, and then the ambient gas is controlled to enter the interior of the detection and calibration component, so that the internal air pressure of the detection and calibration component is increased.

[0054] At the same time, for the convenience of use, when the internal air pressure of the detection and calibration component is high, the motor installed on the lifting platform 201 is controlled to rise, that is, the bottom of the lifting platform 201 is connected to a lifting component 202 that drives the lifting platform 201 to rise and fall, and the motor and the lifting component 202 are both connected to the touch panel 10.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pressure transmitter production detection and calibration device, characterized in that: comprising a housing (1), A first container (130) with a volume of V1 and a second container (140) with a volume of V2 are arranged in the housing (1); the first container (130) is connected to an air supply pipeline (111) via a branch pipe A (114); the second container (140) is connected to one end of the air supply pipeline (111) via a branch pipe B; the other end of the air supply pipeline (111) is connected to a detection pipeline (110); and the two ends of the detection pipeline (110) are respectively connected to a connecting joint A (11) and a connecting joint B (12); One side of the air supply pipeline (111) is also connected to an air intake pipe (112), an air intake valve (113) is provided on the air intake pipe (112), and an end thereof is connected to an air pump or a pressurizing device; When in use, a digital pressure calibrator (101) and a pressure transmitter to be tested (102) are respectively installed on the connecting joint A (11) and the connecting joint B (12); A touch panel (10) is arranged on the housing (1), and the touch panel (10) is connected to a digital pressure calibrator (101), an air pump, and an air intake valve (113).

2. A pressure transmitter production detection and calibration device according to claim 1, characterized in that: The first container (130) is a cylindrical structure. An opening A (131) connected to the branch pipe A (114) is provided at one end of the first container (130), and a through hole A (132) is provided at the other end. A piston A (133) is provided in the first container (130) and slides along the inner wall thereof in a sealing manner. The first container (130) is placed horizontally, and an adjusting bolt A (13) is threadedly connected to the shell (1), and the adjusting bolt A (13) passes through the through hole A (132) and abuts against one side of the piston A (133); The second container (140) is a cylindrical structure. The second container (140) is in a vertical direction. A through hole B (142) and an opening B (141) are respectively provided at the top and the bottom of the second container (140). The opening B (141) is connected to the branch pipe B. The second container (140) is provided with a piston B (143) which slides sealingly along the inner wall thereof, and the two sides of the piston B (143) are respectively connected to a spring A (144) and a spring B (145), and the ends of the spring A (144) and the spring B (145) are respectively connected to the inner top side and bottom side of the second container (140); an adjusting bolt B (14) is threadedly connected to the housing (1), and the adjusting bolt B (14) passes through the through hole B (142) and abuts against the upper surface of the piston B (143).

3. A pressure transmitter production detection and calibration device according to claim 2, characterized in that: An air outlet pipe (170) is fixed on the first container (130), and a through hole A sealingly matched with the air outlet pipe (170) is provided on the piston A (133); The air outlet pipe (170) movably passes through the through hole A; one end of the air outlet pipe (170) located outside the first container (130) is connected to a connecting pipe A (171); the end of the connecting pipe A (171) is connected to the air inlet end of the circulation pump (17); the air outlet end of the circulation pump (17) is connected to an air inlet pipe (174); the end of the air inlet pipe (174) is connected to three connecting pipes B (172); the air outlet end of the air outlet pipe (172) is connected to the air supply pipeline (111), the connecting joint A (11) and the connecting joint B (12); The connecting pipe A (171) and the air inlet pipe (174) are respectively provided with a temperature sensor A and a temperature sensor B, and a semiconductor refrigeration module is provided in the connecting pipe A (171) between the temperature sensor A and the circulation pump (17); The semiconductor refrigeration module, the temperature sensor A and the temperature sensor B are connected to a touch panel (10).

4. A pressure transmitter production detection and calibration device according to claim 3, characterized in that: The touch panel (10) is also connected to a temperature sensor C arranged in the environment.

5. A pressure transmitter production detection and calibration device according to claim 3, characterized in that: The two ends of the shell (1) are respectively provided with a ventilation hole A (103) and a ventilation hole B (104); a filter screen is provided at the ventilation hole A (103) and the ventilation hole B (104); and an exhaust fan is provided at the ventilation hole A (103) / the ventilation hole B (104).

6. A pressure transmitter production detection and calibration device according to claim 3, characterized in that: The detection pipeline (110) is connected to an exhaust pipe (160), and the top of the exhaust pipe (160) passes through the shell (1); A partition plate (163) having air holes is arranged in the exhaust pipe (160); a support plate (164) is fixed on the inner wall of the exhaust pipe (160) above the partition plate (163); a sealing plate (167) cooperating with the partition plate (163) is connected to the bottom side of the support plate (164) via a second spring (166); A threaded structure is provided on the top outer wall of the exhaust pipe (160), and a threaded sleeve (16) is threadedly connected to the threaded structure; an exhaust hole (162) is provided on the bottom side of the threaded sleeve (16); a push rod (161) is connected to the bottom side of the threaded sleeve (16); a through hole B (168) for the push rod (161) to pass through is provided on the support plate (164); the push rod (161) is sealed and matched with the through hole B (168); The support plate (164) is connected to a gas overflow detection tube (165), and a gas flow meter connected to the touch panel (10) is arranged in the gas overflow detection tube (165).

7. A pressure transmitter production detection and calibration device according to claim 6, characterized in that: A valve structure A is provided on the detection pipeline (110) between the exhaust pipe (160) and the connecting joint B (12), wherein the valve structure A comprises a valve body (150), wherein the valve body (150) is a cylindrical structure and is provided with an opening 1 (1501) and an opening 2 (1502) at a first height and a second height, respectively; A limit ring A (152) is provided on the inner wall of the valve body (150) between the first opening (1501) and the second opening (1502); A limit ring B (156) is arranged in the valve body (150) above the limit ring A (152); a valve core structure is arranged in the valve body (150) between the limit ring A (152) and the limit ring B (156); The valve core structure comprises a piston 1 (153) and a piston B (154) which slide in a sealing manner along the inner wall of the valve body (150), and a plurality of connecting columns (155) are connected between the piston 1 (153) and the piston 2 (154); The housing (1) is also threadedly connected with an adjusting bolt C (15), the end of which passes through an opening C (151) provided at the top of the valve body (150), and the end of which abuts against the upper surface of the second piston (154); A spring three A (1542) is connected between the piston two (154) and the inner top side surface of the valve body (150), and a spring three B (1532) is connected between the piston one (153) and the inner bottom side surface of the valve body (150).

8. A pressure transmitter production detection and calibration device according to claim 7, characterized in that: The upper surface of the piston 2 (154) is provided with a guide sleeve (1541) matched with the limiting ring B (156), and the peripheral side wall of the guide sleeve (1541) is provided with a vent hole; The bottom side of the piston 1 (153) is connected to a guide column (1531), and the limiting ring A (152) is provided with a guide hole that cooperates with the guide column (1531).

9. A pressure transmitter production detection and calibration device according to claim 1 or 7, characterized in that: The air supply pipeline (111) is connected to a valve structure B (180), which is identical in structure to the valve structure A. The housing (1) is threadedly connected to an adjusting bolt D (18), the end of which abuts against the upper surface of the second piston (154).

10. A pressure transmitter production detection and calibration device according to claim 1, characterized in that: The pressurizing device comprises a piston cylinder (20), the inner bottom side surface of the piston cylinder (20) being connected to a movable plate (21) sealingly sliding along the inner wall of the piston cylinder (20) via a plurality of elastic guiding telescopic parts (22); the bottom side surface of the piston cylinder (20) is connected to an air intake pipe (23) and an air discharge pipe (24), and a one-way valve A (231) and a one-way valve B (241) are respectively provided on the air intake pipe (23) and the air discharge pipe (24); A crossbeam is arranged on the top of the piston cylinder (20), a guide sleeve (25) is arranged on the crossbeam, a movable column (26) is arranged in the guide sleeve (25), a top plate (27) is arranged on the top of the movable column (26), and a spring (28) is connected between the top plate (27) and the guide sleeve (25); It also includes a motor, the output shaft of which is connected to an elliptical driving block (29), and the outer peripheral side wall of the driving block (29) abuts against the upper surface of the top plate (27).

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