Gas flow calibration device with electric control valve

Abstract

The utility model relates to the technical field of gas flow calibration devices, and discloses a gas flow calibration device with an electric control valve, which comprises a DN100 detection workbench, a positioning device, a moving device, a first front straight pipe and a second front straight pipe, and the first front straight pipe and the second front straight pipe are positioned and fixed through the positioning device. The first front straight pipe is located on the left side of the second front straight pipe. The DN100 detection workbench and the first front straight pipe can be detected through the detected meter device, the detected meter device, the DN100 detection workbench and the first front straight pipe can be adjusted to be in a concentric state through the position fine adjustment device and the gradienter which are arranged on the detected device, the axial movement or the installation distance of the medium turbulent flow generator can be adjusted, and the detection accuracy is improved. And a pneumatic locking mechanism is adopted to reliably lock the medium turbulent flow generator, so that the medium turbulent flow generator cannot move, and it can be guaranteed that the first front straight pipe, the medium turbulent flow generator and the second front straight pipe are in a concentric state.

Description

Technical Field

[0001] The utility model relates to the technical field of gas flow calibration devices, in particular to a gas flow calibration device with an electric regulating valve. Background Art

[0002] An important process to ensure the accuracy and reliability of gas flow measurement involves comparison with a standard or calibrated flow meter and calibration of the gas flow meter under specific conditions. This process applies not only to standard series products available on the market, but also to simple homemade meters, especially after a period of use, calibration is required to ensure the accuracy and reliability of measurement.

[0003] In the existing gas calibration test, the two groups of front straight pipes are directly connected together, and the flow inside the two groups of front straight pipes is tested through the meter device under test. The amount of internal gas flow is certain, and the actual working environment gas flow will change according to demand. This method can only detect a single flow rate, which is obviously not conducive to the detection effect.

[0004] To this end, we propose a gas flow calibration device with an electric regulating valve. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a gas flow calibration device with an electric regulating valve.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gas flow calibration device with an electric regulating valve, comprising a DN100 detection workbench, a positioning device, a moving device, a first front straight pipe and a second front straight pipe, wherein the first front straight pipe and the second front straight pipe are positioned and fixed by the positioning device, the first front straight pipe is located at the left side of the second front straight pipe, the positioning mechanism is arranged on the moving device, the wall surfaces close to the first front straight pipe and the second front straight pipe are both provided with positioning connecting flanges, an electric regulating butterfly valve is arranged between the walls close to the first front straight pipe and the second front straight pipe, and the electric The two side ends of the regulating butterfly valve are respectively connected to the first front straight pipe and the second front straight pipe. A movable test meter device is provided on the upper wall of the DN100 detection workbench. A position fine-tuner and a level gauge for moving the test meter device left and right are provided. A medium turbulence generator that can move left and right is provided between the walls where the first front straight pipe and the second front straight pipe are close to each other. A pneumatic locking mechanism for positioning the medium turbulence generator is provided on the medium turbulence generator, the first front straight pipe and the second front straight pipe. Cylinders are provided on the medium turbulence generator, the first front straight pipe and the second front straight pipe, and the cylinders are fixedly mounted on the upper wall of the DN100 detection workbench.

[0007] Preferably, the positioning device includes a first straight tube clamping mechanism and a second straight tube clamping mechanism, the first front straight tube is clamped and fixed by the first straight tube clamping mechanism, and the second front straight tube is clamped and fixed by the second straight tube clamping mechanism, and the first straight tube clamping mechanism is located to the left of the second straight tube clamping mechanism.

[0008] Preferably, the first straight tube clamping mechanism and the second straight tube clamping mechanism are both provided with a locking device that can improve the clamping effect, and the moving mechanism includes a first electric butterfly valve moving mechanism and a second electric butterfly valve moving mechanism, and the first electric butterfly valve moving mechanism and the second electric butterfly valve moving mechanism are both arranged on the upper side wall of the DN100 detection workbench.

[0009] Preferably, one end of the first straight tube clamping mechanism away from the first front straight tube is fixedly mounted on the upper side wall surface of the first electric butterfly valve moving mechanism, and one end of the second straight tube clamping mechanism away from the second front straight tube is fixedly mounted on the upper side wall surface of the second electric butterfly valve moving mechanism.

[0010] Preferably, a positioning sleeve that can move left and right is fixedly installed on the upper side wall of the DN100 detection workbench, the outer wall of the first front straight tube is arranged inside the positioning sleeve, and the first front straight tube and the interior of the positioning sleeve are adapted to each other.

[0011] Preferably, the inner core of the medium turbulence generator is crescent-shaped, and an adjustment mechanism for adjusting the angle of the inner core is provided on the inner core.

[0012] Preferably, the inner core of the medium turbulence generator is spherical, and an adjustment mechanism for adjusting the angle of the inner core is provided on the inner core.

[0013] Preferably, the inner core of the medium turbulence generator is two independent circular plates, a number of through holes are provided on the walls of the two circular plates in a certain pattern according to the principle of the rectifier, the two circular plates are tightly attached together, and one of the circular plates is provided with an adjustment mechanism.

[0014] Preferably, the inner core of the medium turbulence generator is two independent wedge plates, the two wedge plates are installed on the same cross section, and radial adjustment mechanisms are installed on the two wedge plates.

[0015] Beneficial Effects

[0016] The utility model provides a gas flow calibration device with an electric regulating valve.

[0017] Beneficial effects:

[0018] (1) A gas flow calibration device with an electric regulating valve. During use, the utility model can detect the DN100 detection workbench and the first front straight pipe through the meter device under test. The position fine-tuning device and the level meter provided on the meter device under test can adjust the meter device under test, the DN100 detection workbench and the first front straight pipe to a concentric state, and the axial movement or installation distance of the medium turbulence generator can be adjusted. The pneumatic locking mechanism is used to reliably lock the medium turbulence generator so that the medium turbulence generator does not move. The first front straight pipe, the medium turbulence generator and the second front straight pipe can be kept in a concentric state and leakage can be avoided. The calibration process of the meter under test can be ensured to be reliable and stable, and the accuracy of the calibration work bench can be improved. In addition, the flow rate can be adjusted by the electric regulating butterfly valve, and various flow rate tests can be performed, thereby improving the detection effect. The positions of the first front straight pipe and the second front straight pipe can be changed through the moving device, and the detection position of the meter under test can be changed. The working conditions on site can be simulated to affect the measurement accuracy of the meter under test, thereby improving the detection effect.

[0019] (2) A gas flow calibration device with an electric regulating valve. During use, the utility model adopts a special axial sealing device for the first front straight tube and the positioning sleeve, which can not only ensure that the first front straight tube is nested in the positioning sleeve and can flexibly move in two dimensions in the axial direction, but also can reliably seal, so that the spatial length of the installation place of the meter under test can be adjusted. The workbench can adapt to meters under test of various lengths, widening the length range of the meter under test. Since the inner core of the medium disturbance generator is crescent-shaped, it can be rotated 360 degrees through the adjustment mechanism, so that the crescent-shaped baffle generates disturbances in the flow field in different directions, affecting the accuracy of the downstream meter under test and improving the detection effect.

[0020] (3) A gas flow calibration device with an electric regulating valve. During use, the utility model generates different disturbances to the flow field because the inner core of the medium disturbance generator is spherical, which is located at the center or eccentric position of the generator, and affects the accuracy of the downstream meter under test, thereby improving the detection effect. During use, the utility model generates different disturbances to the flow field because the inner core of the medium disturbance generator is two independent circular plates. The regulating mechanism adjusts one of the circular plates so that it coincides with the through hole on the other circular plate or is misaligned to varying degrees, and artificially interferes with the flow field. When the through holes of the two circular plates coincide, the two circular plates can be regarded as a rectifier to rectify the flow field, which affects the accuracy of the meter under test. When the through holes of the two circular plates are misaligned, the adjustment mechanism can be operated to adjust the size of the misalignment of the through holes of the two circular plates, causing different degrees of disturbance to the flow field, which affects the accuracy of the downstream meter being tested and improves the detection effect; during the use of the utility model, since the inner core of the medium disturbance generator is two independent wedge-shaped plates, the radial adjustment mechanism is operated to interfere with the medium flow field, causing different degrees of disturbance to the flow field, which affects the accuracy of the downstream meter being tested and improves the detection effect BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A plan view of the utility model as a whole;

[0022] Figure 2 This is a plan view of the DN100 testing workbench of the utility model;

[0023] Figure 3 It is a plan view of the positioning sleeve of the utility model.

[0024] Legend: 1. DN100 inspection workbench; 2. First front straight pipe; 3. Second front straight pipe; 4. Electric regulating butterfly valve; 5. First electric butterfly valve moving mechanism; 6. First straight pipe clamping mechanism; 7. Second electric butterfly valve moving mechanism; 8. Second straight pipe clamping mechanism; 9. Positioning sleeve. DETAILED DESCRIPTION

[0025] Embodiment 1: A gas flow calibration device with an electric regulating valve, such as Figure 1 As shown, it includes a DN100 detection workbench 1, a positioning device, a moving device, a first front straight pipe 2 and a second front straight pipe 3. The first front straight pipe 2 and the second front straight pipe 3 are positioned and fixed by the positioning device. The first front straight pipe 2 is located at the left side of the second front straight pipe 3. The positioning mechanism is arranged on the moving device. The walls close to the first front straight pipe 2 and the second front straight pipe 3 are both provided with positioning connecting flanges. An electric regulating butterfly valve 4 is arranged between the walls close to the first front straight pipe 2 and the second front straight pipe 3. The two side ends of the electric regulating butterfly valve 4 are respectively connected to the first front straight pipe 2 and The second front straight pipe 3 is connected together, and a movable test meter device is arranged on the upper side wall of the DN100 detection workbench 1, and a position fine-tuning device and a level meter for moving it left and right are arranged on the test meter device, and a medium turbulence generator that can move left and right is arranged between the walls where the first front straight pipe 2 and the second front straight pipe 3 are close to each other, and a pneumatic locking mechanism for positioning the medium turbulence generator is arranged on the medium turbulence generator, the first front straight pipe 2 and the second front straight pipe 3, and a cylinder is arranged on the upper side wall of the DN100 detection workbench 1.

[0026] During use of the utility model, the DN100 detection workbench 1 and the first front straight pipe 2 can be detected through the device under test, and the device under test, the DN100 detection workbench 1 and the first front straight pipe 2 can be adjusted to a concentric state through the position fine-tuning device and the level meter arranged on the device under test, and the axial movement or installation distance of the medium turbulence generator can be adjusted, and the pneumatic locking mechanism can be used to reliably lock the medium turbulence generator so that the medium turbulence generator will not move, and the first front straight pipe 2, the medium turbulence generator and the second front straight pipe 3 can be ensured to be in a concentric state and avoid leakage, thereby ensuring that the calibration process of the meter under test is reliable and stable, and improving the accuracy of the calibration work bench. In addition, the flow rate can be adjusted through the electric adjustment butterfly valve 4, and a variety of flow rate tests can be performed, thereby improving the detection effect, and the positions of the first front straight pipe 2 and the second front straight pipe 3 can be changed through the moving device, and the position of the meter under test can be changed, so as to simulate the working conditions on site and the influence on the measurement accuracy of the meter under test.

[0027] Embodiment 2: Based on Embodiment 1, Figure 1 , Figure 2 and Figure 3 As shown, the positioning device includes a first straight tube clamping mechanism 6 and a second straight tube clamping mechanism 8. The first front straight tube 2 is clamped and fixed by the first straight tube clamping mechanism 6, and the second front straight tube 3 is clamped and fixed by the second straight tube clamping mechanism 8. The first straight tube clamping mechanism 6 is located on the left side of the second straight tube clamping mechanism 8.

[0028] The first straight pipe clamping mechanism 6 and the second straight pipe clamping mechanism 8 are both provided with a locking device that can improve the clamping effect. The moving mechanism includes a first electric butterfly valve moving mechanism 5 and a second electric butterfly valve moving mechanism 7. The first electric butterfly valve moving mechanism 5 and the second electric butterfly valve moving mechanism 7 are both arranged on the upper side wall of the DN100 detection workbench 1.

[0029] The end of the first straight tube clamping mechanism 6 away from the first front straight tube 2 is fixedly installed on the upper side wall of the first electric butterfly valve moving mechanism 5, and the end of the second straight tube clamping mechanism 8 away from the second front straight tube 3 is fixedly installed on the upper side wall of the second electric butterfly valve moving mechanism 7.

[0030] A positioning sleeve 9 that can move left and right is fixedly installed on the upper side wall of the DN100 detection workbench 1, and the outer wall of the first front straight tube 2 is arranged inside the positioning sleeve 9, and the first front straight tube 2 and the interior of the positioning sleeve 9 are adapted to each other.

[0031] The inner core of the medium turbulence generator is crescent-shaped, and an adjustment mechanism for adjusting the angle of the inner core (not shown in the figure) is provided on the inner core.

[0032] During use of the utility model, since the first front straight tube 2 and the positioning sleeve 9 adopt a special axial sealing device, it can not only ensure that the first front straight tube 2 is nested in the positioning sleeve 9 and can flexibly move in two dimensions in the axial direction, but also can be reliably sealed, so that the spatial length of the installation place of the inspected meter can be adjusted, and the workbench can adapt to inspected meters of various lengths, widening the length range of the inspected meters. Since the inner core of the medium disturbance generator is crescent-shaped, it can be rotated 360 degrees through the adjustment mechanism, so that the crescent-shaped baffle produces disturbances to the flow field in different directions, affecting the accuracy of the downstream inspected meter.

[0033] Embodiment 3: Based on Embodiment 1, Figure 1 As shown, the inner core of the medium turbulence generator is spherical, and an adjustment mechanism for adjusting the angle of the inner core is provided on the inner core.

[0034] During use of the utility model, since the inner core of the medium disturbance flow generator is spherical and located at the center or eccentric position of the generator, different disturbances are generated in the flow field, which affects the accuracy of the downstream meter being tested.

[0035] Embodiment 4: Based on Embodiment 1, Figure 1 As shown, the inner core of the medium turbulence generator is two independent circular plates, and a number of through holes are opened on the walls of the two circular plates in a certain pattern according to the principle of the rectifier. The two circular plates are tightly attached together, and one of the circular plates is provided with an adjustment mechanism.

[0036] During use of the utility model, since the inner core of the medium disturbance generator is two independent circular plates, one of the circular plates is adjusted through the adjustment mechanism to make it coincide with the through holes on the other circular plate or be misaligned to varying degrees, thereby artificially interfering with the flow field. When the through holes of the two circular plates coincide, the two circular plates can be regarded as a rectifier to rectify the flow field, which affects the accuracy of the meter being tested; when the through holes of the two circular plates are misaligned, the adjustment mechanism can be operated to adjust the size of the misalignment of the through holes of the two circular plates, thereby causing different degrees of disturbance to the flow field, which affects the accuracy of the downstream meter being tested.

[0037] Embodiment 5: Based on Embodiment 1, Figure 1 As shown, the inner core of the medium turbulence generator is two independent wedge plates, the two wedge plates are installed on the same cross section, and radial adjustment mechanisms are installed on the two wedge plates.

[0038] During use, the utility model operates a radial adjustment mechanism to disturb the medium flow field, causing the flow field to produce disturbances of varying degrees, since the inner core of the medium disturbance generator is two independent wedge-shaped plates, which affects the accuracy of the downstream meter being tested.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas flow calibration device with an electric regulating valve, comprising a DN100 detection workbench (1), a positioning device, a moving device, a first front straight pipe (2) and a second front straight pipe (3), characterized in that: The first front straight pipe (2) and the second front straight pipe (3) are positioned and fixed by a positioning device. The first front straight pipe (2) is located at the left side of the second front straight pipe (3). The positioning mechanism is arranged on the moving device. The walls of the first front straight pipe (2) and the second front straight pipe (3) close to each other are both provided with positioning connection flanges. An electric regulating butterfly valve (4) is arranged between the walls of the first front straight pipe (2) and the second front straight pipe (3). Both side ends of the electric regulating butterfly valve (4) are respectively connected to the first front straight pipe (2) and the second front straight pipe (3). A movable instrument device to be inspected is arranged on the upper side wall of the DN100 inspection workbench (1), and a position fine-tuning device and a level gauge for enabling the instrument device to be moved left and right are arranged on the instrument device to be inspected; a medium turbulence generator to be movable left and right is arranged between the walls adjacent to the first front straight tube (2) and the second front straight tube (3), and a pneumatic locking mechanism for positioning the medium turbulence generator is arranged on the medium turbulence generator, the first front straight tube (2) and the second front straight tube (3), and a cylinder is fixedly mounted on the upper side wall of the DN100 inspection workbench (1).

2. The gas flow calibration device with an electric regulating valve according to claim 1, characterized in that: The positioning device comprises a first straight tube clamping mechanism (6) and a second straight tube clamping mechanism (8); the first front straight tube (2) is clamped and fixed by the first straight tube clamping mechanism (6); the second front straight tube (3) is clamped and fixed by the second straight tube clamping mechanism (8); the first straight tube clamping mechanism (6) is located on the left side of the second straight tube clamping mechanism (8).

3. The gas flow calibration device with an electric regulating valve according to claim 2, characterized in that: The first straight pipe clamping mechanism (6) and the second straight pipe clamping mechanism (8) are both provided with a locking device capable of improving the clamping effect, the moving mechanism comprises a first electric butterfly valve moving mechanism (5) and a second electric butterfly valve moving mechanism (7), and the first electric butterfly valve moving mechanism (5) and the second electric butterfly valve moving mechanism (7) are both provided on the upper side wall surface of the DN100 detection workbench (1).

4. The gas flow calibration device with an electric regulating valve according to claim 3, characterized in that: The end of the first straight tube clamping mechanism (6) away from the first front straight tube (2) is fixedly mounted on the upper side wall surface of the first electric butterfly valve moving mechanism (5), and the end of the second straight tube clamping mechanism (8) away from the second front straight tube (3) is fixedly mounted on the upper side wall surface of the second electric butterfly valve moving mechanism (7).

5. The gas flow calibration device with an electric regulating valve according to claim 1, characterized in that: A positioning sleeve (9) that can move left and right is fixedly mounted on the upper side wall of the DN100 detection workbench (1); the outer wall of the first front straight tube (2) is arranged inside the positioning sleeve (9); the first front straight tube (2) and the interior of the positioning sleeve (9) are adapted to each other.

6. The gas flow calibration device with an electric regulating valve according to claim 1, characterized in that: The inner core of the medium turbulence generator is crescent-shaped, and an adjustment mechanism for adjusting the angle of the inner core is arranged on the inner core.

7. The gas flow calibration device with an electric regulating valve according to claim 1, characterized in that: The inner core of the medium disturbance flow generator is spherical, and an adjustment mechanism for adjusting the angle of the inner core is arranged on the inner core.

8. The gas flow calibration device with an electric regulating valve according to claim 1, characterized in that: The inner core of the medium turbulence generator is two independent circular plates, and a number of through holes are opened on the walls of the two circular plates in a certain pattern according to the principle of the rectifier. The two circular plates are tightly attached together, and one of the circular plates is provided with an adjustment mechanism.

9. The gas flow calibration device with an electric regulating valve according to claim 1, characterized in that: The inner core of the medium turbulence generator is two wedge-shaped plates which are independent of each other. The two wedge-shaped plates are installed on the same cross section, and radial adjustment mechanisms are installed on the two wedge-shaped plates.

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