Multi-meter simultaneous inspection system and control method thereof

Abstract

The present invention relates to a multi-meter simultaneous inspection system and a control method thereof, wherein the multi-meter simultaneous inspection system comprises a plurality of meter stations to be inspected and a plurality of inspection lines with different flow detection ranges, wherein the plurality of meter stations to be inspected are arranged in parallel with each other, and the plurality of inspection lines are arranged in parallel with each other, and the plurality of meter stations to be inspected and the plurality of inspection lines correspond one-to-one to the plurality of flow detection points of the meter to be inspected, and each inspection line is provided with a standard flow detection device and a flow control device, and the flow control device is used to control the flow detection range on the corresponding inspection line, and the detection range of the standard flow detection device matches the flow detection range of the corresponding inspection line, and each meter station to be inspected is connected or disconnected with the plurality of inspection lines respectively through a control valve module, and the performance of the plurality of meters to be inspected at different flow detection points is detected simultaneously through the plurality of inspection lines. The multi-meter simultaneous inspection system of the present invention can simultaneously detect the performance of the plurality of meters to be inspected at different flow detection points.

Description

Technical Field

[0001] The present invention relates to the technical field of flow meters, and in particular to a multi-meter simultaneous inspection system and a control method thereof. Background Art

[0002] Most of the existing gas meter detection systems and flow meter detection systems connect multiple meters to be tested or multiple flow meters in series on the same meter detection station to achieve the purpose of simultaneously detecting multiple meters to be tested or multiple flow meters. However, the existing gas meter detection systems and flow meter detection systems have shortcomings in actual use:

[0003] 1) The meter to be tested will cause pressure loss in the detection system during the detection process. When multiple meters to be tested are tested in series, the pressure loss of the detection system will increase, making the detection system unsuitable for the detection environment of small flow;

[0004] 2) When the airflow in the detection system passes through the table to be tested at the front end, pulses and vortices will be generated, causing unstable air intake at the table to be tested at the rear end, affecting the detection accuracy of the detection system on the table to be tested at the rear end;

[0005] 3) When one or more meters in the group of meters to be tested fail to meet the standards, the test data of the remaining meters to be tested will be affected. Summary of the invention

[0006] The present invention aims to solve at least one of the above technical problems to a certain extent.

[0007] The first aspect of the present invention provides a multi-meter simultaneous inspection system, which includes multiple meter stations to be inspected and multiple inspection lines with different flow detection ranges. The multiple meter stations to be inspected are arranged in parallel with each other, and the multiple inspection lines are arranged in parallel with each other. The multiple meter stations to be inspected and the multiple inspection lines correspond one-to-one to the multiple flow detection points of the meters to be inspected. Each inspection line is provided with a standard flow detection device and a flow control device. The flow control device is used to control the flow detection range on the corresponding inspection line. The detection range of the standard flow detection device matches the flow detection range of the corresponding inspection line. Each meter station to be inspected is connected or disconnected with the multiple inspection lines through a control valve module, and the performance of the multiple meters to be inspected at different flow detection points is simultaneously detected through the multiple inspection lines.

[0008] According to one embodiment of the present invention, a multi-meter simultaneous inspection system includes a first inspection line and an Nth inspection line arranged in parallel, and a first to-be-inspected meter station and an Nth to-be-inspected meter station, the first inspection line is suitable for the environment of a first flow detection point, the Nth inspection line is suitable for the environment of an Nth flow detection point, the first to-be-inspected meter station is respectively connected to the first inspection line and the Nth inspection line through a first control valve module, and the Nth to-be-inspected meter station is respectively connected to the first inspection line and the Nth inspection line through an Nth control valve module, wherein: .

[0009] According to one embodiment of the present invention, when the multi-meter simultaneous inspection system is in the first inspection state, the first meter to be inspected station introduces fluid from the first flow detection point, and the first meter to be inspected station is connected to the first detection line through the first control valve module, and the Nth meter to be inspected station introduces fluid from the Nth flow detection point, and the Nth meter to be inspected station is connected to the N detection line through the Nth control valve module.

[0010] According to one embodiment of the present invention, when a multi-meter simultaneous inspection system is in the Nth inspection state, the first meter to be inspected station introduces fluid from the Nth flow detection point, and the first meter to be inspected station is connected to the Nth inspection line through the first control valve module, and the Nth meter to be inspected station introduces fluid from the first flow detection point, and the Nth meter to be inspected station is connected to the first inspection line through the Nth control valve module.

[0011] According to one embodiment of the present invention, when N=3, the multi-meter simultaneous inspection system includes three workstations for meters to be inspected and three detection lines with different flow detection ranges, and the three flow detection points applicable to the three detection lines include the lower limit flow Qmin, 20% upper limit flow Qmax and upper limit flow Qmax of the meter to be inspected, respectively; when N=4, the multi-meter simultaneous inspection system includes four workstations for meters to be inspected and four detection lines with different flow detection points, and the four flow detection points applicable to the four detection lines include the lower limit flow Qmin, 20% upper limit flow Qmax, 50% upper limit flow Qmax and upper limit flow Qmax of the meter to be inspected, respectively.

[0012] According to one embodiment of the present invention, the multi-meter simultaneous inspection system also includes a gas source, which is connected to the multiple meter stations to be inspected and introduces gas to each meter station to be inspected. The gas at each meter station to be inspected flows to a corresponding inspection line through a control valve module.

[0013] According to an embodiment of the present invention, each control valve module includes N control valves, and the N control valves are respectively connected to N detection lines one by one.

[0014] According to one embodiment of the present invention, each station of the meter to be inspected includes a reducing sleeve matching the caliber of the meter to be inspected and a first pressure transmitter and a first temperature transmitter arranged at both ends of the meter to be inspected.

[0015] According to one embodiment of the present invention, a second pressure transmitter and a second temperature transmitter are provided at both ends of each standard flow detection device.

[0016] The second aspect of the present invention also provides a control method for a multi-meter simultaneous inspection system. The control method for the multi-meter simultaneous inspection system is executed by the multi-meter simultaneous inspection system of the first aspect of the present invention. The control method for the multi-meter simultaneous inspection system includes: determining multiple different flow detection points for the multi-meter simultaneous inspection system to detect the meters to be inspected; controlling multiple flow control devices on multiple detection lines so that the multiple flow detection ranges of the multiple detection lines correspond to the multiple different flow detection points; controlling multiple workstations of the meters to be inspected to be connected to the multiple detection lines one by one in turn.

[0017] The beneficial effects of the technical solution of the present invention are as follows: the multi-meter simultaneous inspection system of the present invention can not only achieve the purpose of simultaneously inspecting multiple meters to be inspected, but also achieve the purpose of detecting the performance of the meters to be inspected when they are at different flow detection points. At the same time, since multiple detection lines are arranged in parallel, the interference of multiple detection lines on the detection data of multiple meters to be inspected can be reduced. The control method of the multi-meter simultaneous inspection system of the present invention can not only improve the detection efficiency of multiple meters to be inspected, but also improve the detection range of the meters to be inspected, improve the detection accuracy of the meters to be inspected, and in the process of simultaneously inspecting multiple meters to be inspected, it can also reduce the mutual influence between each other and improve the stability of the detection process of multiple meters to be inspected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of the structure of a multi-meter simultaneous inspection system according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 The schematic diagram of the multi-meter simultaneous inspection system shown is in the first inspection state;

[0021] Figure 3 for Figure 1 The schematic diagram of the multi-meter simultaneous inspection system shown is in the second inspection state;

[0022] Figure 4 for Figure 1 The schematic diagram shown is a multi-meter simultaneous inspection system in the third inspection state.

[0023] The reference numerals are as follows:

[0024] 100, first detection line; 200, second detection line; 300, third detection line;

[0025] 10. The first pressure transmitter;

[0026] 21. The first waiting-to-be-inspected table station; 22. The second waiting-to-be-inspected table station; 23. The third waiting-to-be-inspected table station;

[0027] 30. A first temperature transmitter;

[0028] 41. first control valve; 42. second control valve; 43. third control valve; 44. fourth control valve; 45. fifth control valve; 46. sixth control valve; 47. seventh control valve; 48. eighth control valve; 49. ninth control valve;

[0029] 50. A second pressure transmitter;

[0030] 61. A first standard flow rate detection device; 62. A second standard flow rate detection device; 63. A third standard flow rate detection device;

[0031] 70. A second temperature transmitter;

[0032] 80. Flow control device. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the multi-meter simultaneous inspection system of the present invention can be used to detect flow meters for petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas and cryogenic fluids, all of which fall within the scope of protection of the multi-meter simultaneous inspection system of the present invention.

[0034] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", and "have" are inclusive and therefore specify the presence of stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] For ease of description, spatial relative terms can be used in the text to describe the relationship of an element or feature as shown in the figure relative to another element or feature, and these relative terms are, for example, "upper", "lower", "end", etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation except the orientation depicted in the figure. For example, if the mechanism in the figure flips, the element described as "below other elements or features" or "below other elements or features" will be subsequently oriented to "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include the orientation on and below. The mechanism can be oriented in addition (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0038] like Figure 1 As shown, the first aspect of the present invention provides a multi-meter simultaneous inspection system, which includes a plurality of meter stations to be inspected (described in detail below) and a plurality of inspection lines with different flow detection ranges (described in detail below), the plurality of meter stations to be inspected are arranged in parallel with each other, the plurality of inspection lines are arranged in parallel with each other, the plurality of meter stations to be inspected and the plurality of inspection lines correspond one-to-one to the plurality of flow detection points of the meter to be inspected, each inspection line is provided with a standard flow detection device (described in detail below) and a flow control device 80, the flow control device 80 is used to control the flow detection range on the corresponding inspection line, the flow control device 80 can be a variable frequency fan or a float flow meter, through the variable frequency fan or the float flow meter In order to achieve the purpose of controlling the fluid flow on the detection line, the detection range of the standard flow detection device matches the flow detection range of the corresponding detection line, and each station of the meter to be inspected is connected or disconnected with multiple detection lines through the control valve module. When the multi-meter simultaneous inspection system is working, the controller of the multi-meter simultaneous inspection system selects the corresponding multiple detection lines according to the multiple flow detection points of the meter to be inspected and controls the corresponding flow control device 80 output to make the flow detection range on each detection line correspond to the multiple flow detection points of the meter to be inspected one by one, and then the control valve module is used to make each station to be inspected connected to each detection line alternately in turn, so that the multi-meter simultaneous inspection system can realize the simultaneous inspection of multiple meters to be inspected, and at the same time, the performance of multiple inspected flow points of each meter to be inspected can be inspected in turn.

[0039] In this embodiment, the multi-meter simultaneous inspection system of the present invention can not only achieve the purpose of simultaneously inspecting multiple meters to be inspected, but also achieve the purpose of detecting the performance of the meters to be inspected when they are at different flow detection points. At the same time, since multiple detection lines are arranged in parallel, the interference of multiple detection lines on the detection data of multiple stations of the meters to be inspected can be reduced. Specifically, the number of multiple stations of the meters to be inspected and the number of multiple detection lines are the same as the number of multiple flow detection points of the meters to be inspected, and the multiple stations of the meters to be inspected and the multiple detection lines correspond one-to-one to the multiple flow detection points of the meters to be inspected. During the operation of the multi-meter simultaneous inspection system, it can always be ensured that one detection line detects the meters to be inspected at one station of the meters to be inspected. The number of stations of the meters to be inspected and the number of detection lines are determined by the number of different flow detection points required by the meters to be inspected. Specifically, when the number of multiple flow detection points of the meters to be inspected is N, the number of stations of the meters to be inspected and the number of detection lines are both N, wherein, For example, when it is necessary to detect the performance of the meter under test at the lower limit flow rate Qmin and the upper limit flow rate Qmax, only two meter under test stations and two test lines are needed. The two standard flow detection devices on the two detection lines correspond to the lower limit flow Qmin and upper limit flow Qmax of the meter to be tested. When it is necessary to detect the performance of the meter to be tested at the lower limit flow Qmin, upper limit flow Qmax and 20% upper limit flow Qmax, only three meter stations to be tested and three detection lines are needed. At this time, The three standard flow detection devices on the three detection lines correspond to the lower limit flow Qmin, upper limit flow Qmax and 20% upper limit flow Qmax of the meter to be tested. When it is necessary to detect the performance of the meter to be tested at the lower limit flow Qmin, upper limit flow Qmax, 20% upper limit flow Qmax and 50% upper limit flow Qmax, only four meter stations to be tested and four detection lines are needed. At this time, , the four standard flow detection devices on the four detection lines correspond to the lower limit flow Qmin, upper limit flow Qmax, 20% upper limit flow Qmax and 50% upper limit flow Qmax of the meter to be tested. Furthermore, the effective calibration flow range of the standard flow detection device and each detection line covers the flow of most types and calibers of the meter to be tested at the flow detection point, thereby improving the applicability of the standard flow detection device and each detection line to different types of meters to be tested. The standard flow detection device can use a turbine flowmeter or a Roots flowmeter.

[0040] It should be noted that the inspection method of each inspection line for the meter to be inspected is to sequentially introduce airflow into the meter to be inspected and the standard flow detection device, and then compare the airflow flow detected by the meter to be inspected with the airflow flow detected by the standard flow detection device, and determine the performance of the meter to be inspected according to the difference between the airflow flow detected by the meter to be inspected and the airflow flow detected by the standard flow detection device, for example, whether the meter to be inspected is blocked or damaged. Specifically, the multi-meter simultaneous inspection system introduces airflow into the meter to be inspected through an air source, and the air source is respectively connected to multiple stations of the meter to be inspected and introduces gas to each station of the meter to be inspected, and the gas at each station of the meter to be inspected flows to a corresponding inspection line through a control valve module, and each control valve module includes multiple control valves, and the multiple control valves are respectively connected to multiple inspection lines one by one. Furthermore, each station for the meter to be inspected includes a reducing sleeve matching the caliber of the meter to be inspected and a first pressure transmitter 10 and a first temperature transmitter 30 arranged at both ends of the meter to be inspected. A second pressure transmitter 50 and a second temperature transmitter 70 are arranged at both ends of each standard flow detection device. The reducing sleeve can adapt to meters to be inspected of different calibers, thereby improving the applicability of the station for the meter to be inspected to different meters to be inspected. The first pressure transmitter 10 and the second temperature transmitter 30 arranged at both ends of the meter to be inspected can collect the temperature and pressure of the gas flowing to the meter to be inspected. The second pressure transmitter 50 and the second temperature transmitter 70 arranged at both ends of the standard flow detection device can collect the temperature and pressure of the gas flowing to the standard flow detection device, and perform necessary calculations on the collected data to correct the actual flow of the meter to be inspected and the standard flow detection device, thereby improving the consistency of the air temperature and pressure in the meter to be inspected and the air temperature and pressure in the standard flow detection device, and improving the detection accuracy of the detection line on the meter to be inspected.

[0041] Below The multi-meter simultaneous inspection system of an embodiment of the present invention is described by taking the performance of the multi-meter simultaneous inspection system detecting that the meter to be inspected is at the lower limit flow Qmin, the upper limit flow Qmax and 20% Qmax as an example.

[0042] Continue reading Figure 1According to one embodiment of the present invention, when the multi-meter simultaneous inspection system detects the performance of the meter to be inspected at the lower limit flow Qmin, the upper limit flow Qmax and 20% Qmax, the multi-meter simultaneous inspection system includes a first inspection line 100, a second inspection line 200 and a third inspection line 300 arranged in parallel, as well as a first meter to be inspected station 21, a second meter to be inspected station 22 and a third meter to be inspected station 23. The first inspection line 100 is suitable for an environment within a first flow detection range, the second inspection line 200 is suitable for an environment within a second flow detection range, and the third inspection line 300 is suitable for an environment within a third flow detection range. The first meter to be inspected station 21 is connected to the three inspection lines respectively through a first control valve module, the second meter to be inspected station 22 is connected to the three inspection lines respectively through a second control valve module, and the third meter to be inspected station 23 is connected to the three inspection lines respectively through a third control valve module. Each control valve module includes three control valves, and the three control valves are connected to the three inspection lines one by one.

[0043] The multi-meter simultaneous inspection system implements three inspection states through the first inspection line 100, the second inspection line 200 and the third inspection line 300, including: the first inspection state, inspecting the performance of the first inspection meter station 21 when it is at the lower limit flow Qmin, inspecting the performance of the second inspection meter station 22 when it is at 20% of the upper limit flow Qmax, and inspecting the performance of the third inspection meter station 23 when it is at the upper limit flow Qmax; the second inspection state, inspecting the performance of the first inspection meter station 21 when it is at 20% of the upper limit flow Qmax. The performance at the upper limit flow rate Qmax is detected, and the performance of the meter to be tested at the second meter to be tested station 22 is at the upper limit flow rate Qmax, and the performance of the meter to be tested at the third meter to be tested station 23 is at the lower limit flow rate Qmin; in the third detection state, the performance of the meter to be tested at the first meter to be tested station 21 is detected when it is at the upper limit flow rate Qmax, the performance of the meter to be tested at the second meter to be tested station 22 is detected when it is at the lower limit flow rate Qmin, and the performance of the meter to be tested at the third meter to be tested station 23 is detected when it is 20% of the upper limit flow rate Qmax.

[0044] When the multi-meter simultaneous inspection system is in the first inspection state, Figure 2As shown, the first meter station 21 to be inspected is fed with the fluid at the first flow detection point, and the first meter station 21 to be inspected is connected with the first detection line 100 through the first control valve module. Specifically, the first control valve module includes the first control valve 41, the second control valve 42 and the third control valve 43. The second control valve 42 and the third control valve 43 are closed, and the first meter station 21 to be inspected is connected with the first standard flow detection device 61 on the first detection line 100 through the first control valve 41. The second meter station 22 to be inspected is fed with the fluid at the second flow detection point, and the second meter station 22 to be inspected is connected with the second detection line 200 through the second control valve module. Specifically, the second control valve module includes the fourth control valve 44, the third control valve 45, the fourth control valve 46, the fourth control valve 47, the fourth control valve 48, the fourth control valve 49, the fifth control valve 50, the fifth control valve 51, the fifth control valve 52, the fifth control valve 53, the fifth control valve 54, the fifth control valve 55, the fifth control valve 56, the fifth control valve 57, the fifth control valve 58, the fifth control valve 59, the fifth control valve 51, the fifth control valve 5 The fifth control valve 45 and the sixth control valve 46 are closed, the second meter to be inspected station 22 is connected to the second standard flow detection device 62 on the second detection line 200 through the fourth control valve 44, the third meter to be inspected station 23 is introduced with the fluid of the third flow detection point, and the third meter to be inspected station 23 is connected to the third detection line 300 through the third control valve module. Specifically, the third control valve module includes the seventh control valve 47, the eighth control valve 48 and the ninth control valve 49, the eighth control valve 48 and the ninth control valve 49 are closed, and the third meter to be inspected station 23 is connected to the third standard flow detection device 63 on the third detection line 300 through the seventh control valve 47.

[0045] When the multi-meter simultaneous inspection system is in the second inspection state, such as Figure 3 As shown, the first meter station 21 to be inspected is fed with the fluid at the second flow detection point, and the first meter station 21 to be inspected is connected with the second detection line 200 through the first control valve module. Specifically, the first control valve 41 and the third control valve 43 are closed, and the first meter station 21 to be inspected is connected with the second standard flow detection device 62 on the second detection line 200 through the second control valve 42. The second meter station 22 to be inspected is fed with the fluid at the third flow detection point, and the second meter station 22 to be inspected is connected with the third detection line 300 through the second control valve module. Specifically, the first control valve 41 and the third control valve 43 are closed, and the first meter station 21 to be inspected is connected with the second standard flow detection device 62 on the second detection line 200 through the second control valve 42. The fifth control valve 45 and the fourth control valve 44 are closed, the second meter to be inspected station 22 is connected to the third standard flow detection device 63 on the third detection line 300 through the sixth control valve 46, the third meter to be inspected station 23 is introduced with the fluid of the first flow detection point, and the third meter to be inspected station 23 is connected to the first detection line 100 through the third control valve module. Specifically, the seventh control valve 47 and the ninth control valve 49 are closed, and the third meter to be inspected station 23 is connected to the first standard flow detection device 61 on the first detection line 100 through the eighth control valve 48.

[0046] When the multi-meter simultaneous inspection system is in the third inspection state, such as Figure 4As shown, the first meter station 21 to be inspected is fed with fluid at the third flow detection point, and the first meter station 21 to be inspected is connected to the third detection line 300 through the first control valve module. Specifically, the first control valve 41 and the second control valve 42 are closed, and the first meter station 21 to be inspected is connected to the third standard flow detection device 63 on the third detection line 300 through the third control valve 43. The second meter station 22 to be inspected is fed with fluid at the first flow detection point, and the second meter station 22 to be inspected is connected to the first detection line 100 through the second control valve module. Specifically, the first meter station 21 to be inspected is connected to the third standard flow detection device 63 on the third detection line 300 through the third control valve 43. The fourth control valve 44 and the sixth control valve 46 are closed, the second meter to be inspected station 22 is connected to the first standard flow detection device 61 on the first detection line 100 through the fifth control valve 45, the third meter to be inspected station 23 is introduced with the fluid of the second flow detection point, and the third meter to be inspected station 23 is connected to the second detection line 200 through the third control valve module. Specifically, the seventh control valve 47 and the eighth control valve 48 are closed, and the third meter to be inspected station 23 is connected to the second standard flow detection device 62 on the second detection line 200 through the ninth control valve 49.

[0047] The second aspect of the present invention also provides a control method for a multi-meter simultaneous inspection system. The control method for the multi-meter simultaneous inspection system is executed by the multi-meter simultaneous inspection system of the first aspect of the present invention. The control method for the multi-meter simultaneous inspection system includes: determining multiple different flow detection points for the multi-meter simultaneous inspection system to detect the meters to be inspected; controlling the outputs of multiple flow control devices 80 on multiple detection lines so that the multiple flow detection ranges of the multiple detection lines correspond to the multiple different flow detection points; controlling multiple workstations of the meters to be inspected to be connected to the multiple detection lines one by one in turn.

[0048] In this embodiment, the control method of the multi-meter simultaneous inspection system of the present invention can not only improve the inspection efficiency of multiple meters to be inspected, but also improve the inspection range of the meters to be inspected, and improve the inspection accuracy of the meters to be inspected. In the process of simultaneously inspecting multiple meters to be inspected, it can also reduce the mutual influence between each other and improve the stability of the inspection process of multiple meters to be inspected.

[0049] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A multi-meter simultaneous inspection system, characterized in that: The multi-meter simultaneous inspection system includes a plurality of meter stations to be inspected and a plurality of inspection lines with different flow detection ranges. The plurality of meter stations to be inspected are arranged in parallel with each other, and the plurality of inspection lines are arranged in parallel with each other. The plurality of meter stations to be inspected and the plurality of inspection lines correspond one-to-one to the plurality of flow detection points of the meter to be inspected. A standard flow detection device and a flow control device are provided on each inspection line. The flow control device is used to control the flow detection range on the corresponding inspection line. The detection range of the standard flow detection device matches the flow detection range of the corresponding inspection line. Each meter station to be inspected is connected to or disconnected from the plurality of inspection lines through a control valve module. The performance of the plurality of meters to be inspected at different flow detection points is simultaneously detected through the plurality of inspection lines.

2. The multi-meter simultaneous inspection system according to claim 1, characterized in that: The multi-meter simultaneous inspection system includes a first inspection line and an Nth inspection line arranged in parallel, and a first to-be-inspected meter station and an Nth to-be-inspected meter station, wherein the first inspection line is suitable for the environment of a first flow detection point, and the Nth inspection line is suitable for the environment of an Nth flow detection point, and the first to-be-inspected meter station is respectively connected to the first inspection line and the Nth inspection line through a first control valve module, and the Nth to-be-inspected meter station is respectively connected to the first inspection line and the Nth inspection line through an Nth control valve module, wherein: .

3. The multi-meter simultaneous inspection system according to claim 2, characterized in that: When the multi-meter simultaneous inspection system is in the first inspection state, the fluid at the first flow detection point is introduced into the first meter station to be inspected, and the first meter station to be inspected is connected to the first detection line through the first control valve module, and the fluid at the Nth flow detection point is introduced into the Nth meter station to be inspected, and the Nth meter station to be inspected is connected to the Nth detection line through the Nth control valve module.

4. The multi-meter simultaneous inspection system according to claim 2, characterized in that: When the multi-meter simultaneous inspection system is in the Nth inspection state, the first meter to be inspected station introduces the fluid of the Nth flow detection point, and the first meter to be inspected station is connected with the Nth inspection line through the first control valve module, and the Nth meter to be inspected station introduces the fluid of the first flow detection point, and the Nth meter to be inspected station is connected with the first inspection line through the Nth control valve module.

5. The multi-meter simultaneous inspection system according to claim 2, characterized in that: When N=3, the multi-meter simultaneous inspection system includes three workstations for meters to be inspected and three inspection lines with different flow detection ranges, and the three flow detection points applicable to the three inspection lines include the lower limit flow Qmin, 20% upper limit flow Qmax and upper limit flow Qmax of the meters to be inspected. When N=4, the multi-meter simultaneous inspection system includes four workstations for meters to be inspected and four inspection lines with different flow detection points, and the four flow detection points applicable to the four inspection lines include the lower limit flow Qmin, 20% upper limit flow Qmax, 50% upper limit flow Qmax and upper limit flow Qmax of the meters to be inspected.

6. The multi-meter simultaneous inspection system according to claim 1, characterized in that: The multi-meter simultaneous inspection system also includes a gas source, which is connected to the multiple meter stations to be inspected and supplies gas to each meter station to be inspected. The gas at each meter station to be inspected flows to a corresponding inspection line through the control valve module.

7. The multi-meter simultaneous inspection system according to claim 2, characterized in that: Each control valve module includes N control valves, and the N control valves are connected to N detection lines one by one.

8. The multi-meter simultaneous inspection system according to claim 1, characterized in that: Each station of the meter to be inspected comprises a reducing sleeve matching the caliber of the meter to be inspected and a first pressure transmitter and a first temperature transmitter arranged at both ends of the meter to be inspected.

9. The multi-meter simultaneous inspection system according to claim 1, characterized in that: Both ends of each standard flow detection device are provided with a second pressure transmitter and a second temperature transmitter.

10. A control method for a multi-meter simultaneous inspection system, characterized in that: The control method of the multi-meter simultaneous inspection system is performed by the multi-meter simultaneous inspection system according to any one of claims 1 to 9, and the control method of the multi-meter simultaneous inspection system includes: Determine a plurality of different flow detection points for the multi-meter simultaneous detection system to detect the meters to be inspected; Controlling the outputs of the plurality of flow control devices on the plurality of detection lines so that the plurality of flow detection ranges of the plurality of detection lines correspond to the plurality of different flow detection points; The plurality of to-be-tested workstations are controlled to be connected to the plurality of testing lines one by one in turn and in alternating order.

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