Flow standard device for laboratory

Abstract

The utility model relates to the technical field of flow detection, and discloses a laboratory flow standard device which comprises a liquid flow pool, a first pipe fitting and a detection assembly, the first pipe fitting is communicated with the liquid flow pool, and a power module of the first pipe fitting can pump detected liquid contained in the liquid flow pool out of the first pipe fitting; the detection assembly comprises a vertically arranged first branch pipe fitting and a horizontally arranged second branch pipe fitting, the first branch pipe fitting is provided with a vertical flow detected meter capable of detecting the flow in the vertical direction, and the second branch pipe fitting is provided with a horizontal flow detected meter capable of detecting the flow in the horizontal direction; and the first pipe fitting is selectively communicated with the second branch pipe fitting or the first branch pipe fitting, so that the flow standard device for the laboratory is provided with a detected instrument in two modes of horizontal installation and vertical installation at the same time, and the purposes of reasonably utilizing resources, saving cost and facilitating detection work are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow detection, in particular to a flow standard device for laboratory use. Background Art

[0002] Measurement is the eye of industrial production, and flow measurement is one of the components of measurement science and technology. Especially in the current energy crisis and the increasing degree of automation in industrial production, the status and role of flow meters in the national economy are more obvious. With the development of industry, the accuracy and range of flow measurement are increasingly required.

[0003] Before the flow meter is put into use and during use, in order to ensure the accuracy and reliability of the flow meter's metering performance, it is generally tested regularly on the flow standard device in the laboratory; according to the structural form and installation requirements of different flow meters, there are two modes of installation in the flow meter test: horizontal installation or vertical installation. In the prior art, flow standard devices only have a horizontal installation mode. When the vertical installation mode is required, either the flow standard device must be re-purchased or the tooling must be made separately, or the work cannot be carried out, resulting in a certain degree of waste of resources, increased costs, and inconvenience in testing. Utility Model Content

[0004] The utility model aims to provide a flow standard device for laboratory use, which solves the problem that the instruments to be tested in the horizontal installation mode and the vertical installation mode are incompatible, can reasonably utilize resources, save costs and facilitate detection work.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Laboratory flow standard device, including:

[0007] A liquid flow pool, wherein the liquid to be measured is contained in the liquid flow pool;

[0008] a first pipe, the first pipe being in communication with the liquid flow pool, the first pipe being provided with a power module, the power module being configured to pump the measured liquid out of the first pipe;

[0009] The detection component includes a second branch pipe and a first branch pipe, the first pipe selectively connects to the second branch pipe or the first branch pipe; the first branch pipe is vertically arranged, and a vertical flow meter is arranged on the first branch pipe, and the vertical flow meter is configured to detect the flow in the vertical direction; the second branch pipe is horizontally arranged, and a horizontal flow meter is arranged on the second branch pipe, and the horizontal flow meter is configured to detect the flow in the horizontal direction.

[0010] As a preferred technical solution for a flow standard device for laboratory use, a first valve member is provided on the first branch pipe, and the first valve member is configured to selectively block the first branch pipe; a second valve member is provided on the second branch pipe, and the second valve member is configured to selectively block the second branch pipe; and one of the first valve member and the second valve member is opened selectively.

[0011] As a preferred technical solution for the laboratory flow standard device, the second branch pipe is provided with a mounting hole, and the mounting hole is arranged between the horizontal flow meter to be measured and the first pipe;

[0012] The detection assembly further includes a third branch pipe, one end of which is connected to the first branch pipe, and the other end of which is connected to the second branch pipe through the mounting hole.

[0013] As a preferred technical solution for the flow standard device for laboratory use, a one-way valve is provided on the third branch pipe, and the one-way valve is configured to enable the measured liquid to flow from the third branch pipe to the second branch pipe.

[0014] As a preferred technical solution of the flow standard device for laboratory use, a third valve member is provided on the third branch pipe member, and the third valve member is configured to selectively block the third branch pipe member.

[0015] As a preferred technical solution for the flow standard device for laboratory use, the third branch pipe is welded to the second branch pipe to block the installation hole.

[0016] As a preferred technical solution for the flow standard device for laboratory use, a mounting piece is provided on the second branch pipe member, and the horizontal flow meter to be measured is detachably connected to the second branch pipe member via the mounting piece.

[0017] As a preferred technical solution for the laboratory flow standard device, the laboratory flow standard device also includes a calibration component, which is connected to the second branch pipe and the first branch pipe, and the calibration component is used to calibrate the horizontal flow meter or the vertical flow meter.

[0018] As a preferred technical solution for the flow standard device for laboratory use, a flow regulating valve is provided on the first pipe, and the flow regulating valve is configured to be able to adjust the output flow of the first pipe.

[0019] As a preferred technical solution for a flow standard device for laboratory use, a pressure stabilizing module is provided on the first pipe fitting, and the pressure stabilizing module is arranged at the rear end of the power module. The pressure stabilizing module is configured to adjust the output pressure of the first pipe fitting to be less than or equal to a preset pressure.

[0020] Beneficial effects of the utility model:

[0021] The laboratory flow standard device provided by the utility model comprises a liquid flow pool, a first pipe fitting and a detection component, wherein the first pipe fitting is connected with the liquid flow pool, and a power module of the first pipe fitting can pump the measured liquid contained in the liquid flow pool out of the first pipe fitting; the detection component comprises a vertically arranged first branch pipe fitting and a horizontally arranged second branch pipe fitting, the first branch pipe fitting is provided with a vertical flow meter to be measured that can detect the flow in the vertical direction, the second branch pipe fitting is provided with a flow meter to be measured that can detect the flow level in the horizontal direction, the first pipe fitting is selectively connected with the second branch pipe fitting or the first branch pipe fitting, so that the laboratory flow standard device has two modes of measured instruments, namely, horizontal installation and vertical installation, so as to achieve the purpose of rational use of resources, cost saving and convenient detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a flow standard device for laboratory use provided by a specific implementation method of the utility model.

[0023] In the figure:

[0024] 100, first pipe fitting; 110, power module; 120, voltage stabilizing module; 130, flow regulating valve;

[0025] 200, detection assembly; 210, first branch pipe; 211, vertical flow meter; 212, first valve; 220, second branch pipe; 221, horizontal flow meter; 222, second valve; 223, mounting; 230, third branch pipe; 231, third valve;

[0026] 300. Calibration assembly; 400. Liquid flow cell. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] Specific as Figure 1 As shown in, the utility model discloses a laboratory flow standard device, including a liquid flow pool 400, a first pipe fitting 100 and a detection component 200, wherein the liquid flow pool 400 contains a measured liquid, the first pipe fitting 100 is connected to the liquid flow pool 400, and the first pipe fitting 100 is provided with a power module 110, and the power module 110 can pump the measured liquid out of the first pipe fitting 100; the detection component 200 includes a vertically arranged first branch pipe fitting 210 and a horizontally arranged second branch pipe fitting 220, the first branch pipe fitting 210 is provided with a vertical flow meter 211 capable of detecting the flow in the vertical direction, the second branch pipe fitting 220 is provided with a flow meter capable of detecting the flow level in the horizontal direction, and the first pipe fitting 100 is selectively connected to the second branch pipe fitting 220 or the first branch pipe fitting 210, so that the laboratory flow standard device has both horizontally installed and vertically installed modes of measured instruments. When the first pipe fitting 100 is connected to the first branch pipe fitting 210, the laboratory flow standard device can be operated to detect the vertical flow meter 211; when the first pipe fitting 100 is connected to the second branch pipe fitting 220, the laboratory flow standard device can be operated to detect the horizontal flow meter 221, thereby achieving the purpose of rational use of resources, cost saving and facilitating detection work.

[0032] Specifically, the first branch pipe 210 is provided with a first valve member 212, which can be opened or closed to selectively block the first branch pipe 210; the second branch pipe 220 is provided with a second valve member 222, which can also be opened or closed to selectively block the second branch pipe 220; and it is ensured that either the first valve member 212 or the second valve member 222 is opened selectively, that is, when the first valve member 212 is opened, the second valve member 222 is closed; conversely, when the second valve member 222 is opened, the first valve member 212 is closed, which can ensure a single flow path for the measured liquid in the laboratory flow standard device, avoid diversion, and affect the reading result of the instrument under test for the laboratory flow standard device.

[0033] In this embodiment, a mounting hole is opened in the second branch pipe 220, and the mounting hole is arranged between the horizontal flow meter 221 and the first pipe 100; the detection component 200 also includes a third branch pipe 230, one end of the third branch pipe 230 is connected to the first branch pipe 210, and the other end of the third branch pipe 230 is connected to the second branch pipe 220 through the mounting hole; when the first pipe 100 is connected to the first branch pipe 210, the measured liquid can flow through the first branch pipe 210, the third branch pipe 230 and the second branch pipe 220 in sequence, and this laboratory flow standard device can be operated to simultaneously detect the vertical flow meter 211 and the horizontal flow meter 221.

[0034] It can be understood that a one-way valve is provided on the third branch pipe 230, and the one-way valve is configured to only allow the measured liquid to flow from the third branch pipe 230 to the second branch pipe 220, so as to avoid the measured liquid from flowing back and affecting the reading result of the instrument under test on the laboratory flow standard device; when the first pipe 100 is connected to the second branch pipe 220, the operation of this laboratory flow standard device can still ensure that the horizontal flow meter under test 221 can be accurately detected, and at the same time, other structures of the laboratory flow standard device will not be affected.

[0035] Further, the third branch pipe 230 is provided with a third valve 231, which can be opened or closed to selectively block the third branch pipe 230. When the first valve 212 is opened, the second valve 222 is closed, the third valve 231 is opened, the first pipe 100 is connected to the first branch pipe 210, and the laboratory flow standard device can be operated to simultaneously detect the vertical flow meter 211 and the horizontal flow meter 221; when the second valve 222 is opened, the first valve 212 is closed, the third valve 231 is closed, the first pipe 100 is connected to the second branch pipe 220, and the laboratory flow standard device is operated to only detect the horizontal flow meter 221. Exemplarily, the third branch pipe 230 is welded to the second branch pipe 220 to block the installation hole, which can stably ensure the structural strength and sealing of the laboratory flow standard device.

[0036] In this embodiment, the third branch pipe 230 is a U-shaped branch pipe. The third branch pipe 230 has two legs, one long and one short. The long leg is parallel to the short leg, and the short leg is connected to the first branch pipe 210. The long leg is welded to the mounting hole and connected to the second branch pipe 220. The purpose of this arrangement is to make the structure of the laboratory flow standard device more standardized and neat, and to facilitate maintenance and management.

[0037] Exemplarily, a mounting member 223 is provided on the second branch pipe 220, and the horizontal flow meter 221 is detachably connected to the second branch pipe 220 through the mounting member 223. The horizontal flow meter 221 is selectively installed on the second branch pipe 220. If, on the basis of the above scheme, it is desired to separately detect the vertical flow meter 211, the horizontal flow meter 221 can be removed from the second branch pipe 220. In this way, when the first valve member 212 is opened, the second valve member 222 is closed, and the third valve member 231 is opened, the first pipe 100 is connected to the first branch pipe 210, and the measured liquid can flow through the first branch pipe 210 equipped with the vertical flow meter 211, the third branch pipe 230 and the second branch pipe 220 without the horizontal flow meter 221 in sequence. By operating this laboratory flow standard device, the vertical flow meter 211 can be separately detected.

[0038] Furthermore, the laboratory flow standard device also includes a calibration component 300, which is connected to the second branch pipe 220 and the first branch pipe 210. The calibration component 300 can be used to calibrate the horizontal flow meter 221 or the vertical flow meter 211 respectively. The calibration component 300 includes a standard measuring instrument and a reversing member. The reversing member includes a first output pipe and a second output pipe. The reversing member can selectively allow the measured liquid to flow to the first output pipe or the second output pipe; at the same time, the first output pipe is connected to the standard measuring instrument. When the measured instrument needs to be calibrated, the reversing member controls the measured liquid to flow to the first output pipe and inject it into the standard measuring instrument to complete the calibration work; when the measured instrument does not need to be calibrated so that the laboratory flow standard device can perform other work, the reversing member controls the measured liquid to flow to the second output pipe. Exemplarily, the second output pipe can be connected to the liquid flow pool 400, and the measured liquid can form a cycle in the laboratory flow standard device so that the laboratory flow standard device continues to generate flow.

[0039] Specifically, a pressure stabilizing module 120 is also provided on the first pipe fitting 100. The pressure stabilizing module 120 is arranged between the power module 110 and the detection component 200, which can ensure the stability of the rear end pressure of the pressure stabilizing module 120 and can adjust the output pressure of the first pipe fitting 100 to be less than or equal to the preset pressure. The pressure stabilizing module 120 can protect the laboratory flow standard device to avoid excessive internal pressure and can also improve the stability of the laboratory flow standard device.

[0040] In this embodiment, a flow regulating valve 130 is also provided on the first pipe fitting 100. The voltage stabilizing module 120 and the flow regulating valve 130 are arranged in sequence between the power module 110 and the detection component 200. The flow regulating valve 130 is configured to adjust the flow entering the detection component 200 according to actual needs, thereby expanding the scope of application of the flow standard device for laboratory use.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Laboratory flow standard device, characterized in that: include: A liquid flow pool (400), wherein the liquid flow pool (400) contains a liquid to be tested; A first pipe (100), the first pipe (100) being in communication with the liquid flow pool (400), a power module (110) being disposed on the first pipe (100), the power module (110) being configured to pump the measured liquid out of the first pipe (100); A detection component (200), the detection component (200) comprising a first branch pipe (210) and a second branch pipe (220), the first pipe (100) selectively connecting to the second branch pipe (220) or the first branch pipe (210); the first branch pipe (210) is arranged vertically, a vertical flow meter (211) is arranged on the first branch pipe (210), and the vertical flow meter (211) is configured to detect flow in a vertical direction; the second branch pipe (220) is arranged horizontally, a horizontal flow meter (221) is arranged on the second branch pipe (220), and the horizontal flow meter (221) is configured to detect flow in a horizontal direction.

2. The flow standard device for laboratory use according to claim 1, characterized in that: The first branch pipe member (210) is provided with a first valve member (212), and the first valve member (212) is configured to selectively block the first branch pipe member (210); the second branch pipe member (220) is provided with a second valve member (222), and the second valve member (222) is configured to selectively block the second branch pipe member (220); and one of the first valve member (212) and the second valve member (222) is selectively opened.

3. The flow standard device for laboratory use according to claim 1, characterized in that: The second branch pipe (220) is provided with a mounting hole, and the mounting hole is arranged between the horizontal flow meter (221) and the first pipe (100); The detection assembly (200) further comprises a third branch pipe (230), one end of the third branch pipe (230) being connected to the first branch pipe (210), and the other end of the third branch pipe (230) being connected to the second branch pipe (220) through the mounting hole.

4. The flow standard device for laboratory use according to claim 3, characterized in that: The third branch pipe member (230) is provided with a one-way valve member, and the one-way valve member is configured to enable the measured liquid to flow from the third branch pipe member (230) to the second branch pipe member (220).

5. The flow standard device for laboratory use according to claim 3, characterized in that: The third branch pipe member (230) is provided with a third valve member (231), and the third valve member (231) is configured to selectively block the third branch pipe member (230).

6. The flow standard device for laboratory use according to claim 3, characterized in that: The third branch pipe member (230) is welded to the second branch pipe member (220) to seal the installation hole.

7. The flow standard device for laboratory use according to claim 3, characterized in that: The second branch pipe member (220) is provided with a mounting member (223), and the horizontal flow meter (221) is detachably connected to the second branch pipe member (220) via the mounting member (223).

8. The flow standard device for laboratory use according to any one of claims 1 to 7, characterized in that: The laboratory flow standard device further comprises a calibration component (300), wherein the calibration component (300) is connected to both the second branch pipe (220) and the first branch pipe (210), and the calibration component (300) is used to calibrate the horizontal flow meter (221) or the vertical flow meter (211).

9. The laboratory flow standard device according to any one of claims 1 to 7, characterized in that: The first pipe member (100) is provided with a flow regulating valve (130), and the flow regulating valve (130) is configured to be able to regulate the output flow of the first pipe member (100).

10. The laboratory flow standard device according to any one of claims 1 to 7, characterized in that: A pressure stabilizing module (120) is provided on the first pipe (100), and the pressure stabilizing module (120) is provided at the rear end of the power module (110). The pressure stabilizing module (120) is configured to be able to adjust the output pressure of the first pipe (100) to be less than or equal to a preset pressure.

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