Device for automatically calibrating flow of oil injector

Abstract

The invention provides automatic flow calibration equipment for an oil sprayer. A storage device of the automatic flow calibration equipment is provided with a storage cavity, a liquid inlet and a liquid outlet. A calibration assembly of the calibration device is located between a liquid inlet assembly and a liquid outlet assembly, the liquid inlet assembly is communicated with a liquid outlet, and the liquid outlet assembly is communicated with a liquid inlet so as to drive liquid to flow in a storage cavity and the calibration device; the two pressure detection devices are respectively arranged on the liquid inlet assembly and the liquid outlet assembly so as to detect the pressure of liquid in the liquid inlet assembly and the liquid outlet assembly; the flow detection device is arranged on the liquid outlet assembly so as to detect the flow of liquid in the liquid outlet assembly; when the calibration assembly of the calibration device is in the circulation state, the calibration structure of the calibration assembly is closed, and the circulation structure is opened to spray liquid; and when the calibration assembly is in the calibration state, the circulation structure of the calibration assembly is closed, and the calibration structure is opened, so that the flow detection device is calibrated. The problem that in the prior art, fuel injector test equipment is low in flow calibration efficiency is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of injector flow calibration, in particular to an injector flow automatic calibration device. Background Art

[0002] At present, injector manufacturers usually use injector test equipment to simulate the actual working state of the injector to evaluate the performance of the injector. During the use of the injector test equipment, the flow sensor is one of the key components, which is used to accurately measure the injection amount of the injector or the flow in the oil circuit. Since the flow sensor may reduce its own measurement accuracy due to environmental changes or aging, it is necessary to calibrate the flow sensor regularly to maintain its accuracy and performance.

[0003] In the prior art, workers usually use a flow meter to manually calibrate the injector test equipment.

[0004] However, the manual calibration method requires the staff to frequently calibrate the injector test equipment, which increases the staff's labor intensity. At the same time, the manual calibration process is time-consuming, thereby reducing the calibration efficiency of the injector test equipment. Summary of the invention

[0005] The main purpose of the present invention is to provide an injector flow automatic calibration device to solve the problem of low flow calibration efficiency of injector test equipment in the prior art.

[0006] In order to achieve the above-mentioned object, according to the present invention, there is provided an injector flow automatic calibration device, comprising: a frame; a storage device, arranged on the frame, the storage device having a storage chamber, a liquid inlet and a liquid outlet, the storage chamber being used to store liquid; a calibration device, arranged outside the storage chamber, the calibration device comprising a liquid inlet assembly, a calibration assembly and a liquid outlet assembly which are interconnected, the calibration assembly being located between the liquid inlet assembly and the liquid outlet assembly, the end of the liquid inlet assembly away from the calibration assembly being connected to the liquid outlet, the end of the liquid outlet assembly away from the calibration assembly being connected to the liquid inlet, so as to drive the liquid to flow in the storage chamber and the calibration device; two pressure detection devices, respectively arranged in the liquid inlet assembly and the calibration assembly; The device is mounted on the liquid inlet component and the liquid outlet component to detect the pressure of the liquid in the liquid inlet component and the liquid outlet component; the flow detection device is arranged on the liquid outlet component to detect the flow rate of the liquid in the liquid outlet component; wherein the calibration component includes a circulation structure and a calibration structure, one end of the circulation structure and the calibration structure are both connected to the liquid inlet component, and the other end of the circulation structure and the calibration structure are both connected to the liquid outlet component; the calibration component has a circulation state and a calibration state, when the calibration component is in the circulation state, the calibration structure is closed and the circulation structure is opened to spray liquid; when the calibration component is in the calibration state, the circulation structure is closed and the calibration structure is opened to calibrate the flow detection device.

[0007] Furthermore, the calibration component also includes: a first regulating structure, which is arranged on the circulation structure to connect or block the circulation structure and the liquid inlet component; a second regulating structure, which is arranged on the calibration structure to connect or block the calibration structure and the liquid inlet component; wherein, when the circulation structure is opened, the first regulating structure connects the circulation structure and the liquid inlet component; when the circulation structure is closed, the first regulating structure blocks the circulation structure and the liquid inlet component; when the calibration structure is opened, the second regulating structure connects the calibration structure and the liquid inlet component; when the calibration structure is closed, the second regulating structure blocks the calibration structure and the liquid inlet component.

[0008] Furthermore, the flow structure is tubular and has a flow cavity, and the flow structure includes a spray portion, at least a portion of which is located in the flow cavity, so as to spray liquid when the flow structure is opened.

[0009] Furthermore, the calibration structure is tubular and has a calibration cavity, and the calibration assembly also includes a calibration part, which is arranged on the calibration structure and located in the calibration cavity, wherein the calibration part is tubular, and the inner diameter D1 of the calibration part and the inner diameter D2 of the calibration structure satisfy: D1<D2.

[0010] Furthermore, the calibration device also includes a pump body assembly, which is arranged on the liquid inlet assembly and / or the liquid outlet assembly to drive the liquid to flow.

[0011] Furthermore, the injector flow automatic calibration equipment also includes a temperature detection device, which is arranged on the frame to detect the temperature of the liquid in the storage chamber and send the detection result to the control device. The control device controls the calibration component to switch between the circulation state and the calibration state according to the detection result.

[0012] Furthermore, the injector flow automatic calibration device also includes a heating device, which is arranged on the storage device and connected to the control device. The control device controls the heating device to heat the liquid in the storage chamber according to the detection result.

[0013] Furthermore, the injector flow automatic calibration device also includes a heat dissipation device, which is arranged on the storage device and located outside the storage cavity to dissipate heat from the liquid in the storage cavity.

[0014] Furthermore, the injector flow automatic calibration equipment also includes: a carrying device, which is arranged on the frame, and the carrying device has a carrying cavity; a connecting device, which is arranged on the carrying device and located in the carrying cavity, and the connecting device is used to connect and disconnect an external power supply; a display device, which is arranged on the carrying device and located outside the carrying cavity to display the detection data of the pressure detection device and the detection value of the flow detection device.

[0015] Furthermore, the injector flow automatic calibration device also includes a cover body, and the bottom of the cover body is connected to the outer peripheral surface of the supporting device.

[0016] According to the technical solution of the present invention, the storage device of the automatic calibration device for the flow of the fuel injector is arranged on the frame, and the storage device has a storage cavity, a liquid inlet and a liquid outlet, and the storage cavity is used to store liquid. The calibration device is arranged outside the storage cavity, and the calibration device includes a liquid inlet component, a calibration component and a liquid outlet component which are interconnected, and the calibration component is located between the liquid inlet component and the liquid outlet component, and one end of the liquid inlet component away from the calibration component is connected to the liquid outlet, and one end of the liquid outlet component away from the calibration component is connected to the liquid inlet, so as to drive the liquid to flow in the storage cavity and the calibration device. Two pressure detection devices are respectively arranged on the liquid inlet component and the liquid outlet component to detect the pressure of the liquid in the liquid inlet component and the liquid outlet component. The flow detection device is arranged on the liquid outlet component to detect the flow of the liquid in the liquid outlet component. Among them, the calibration component includes a circulation structure and a calibration structure, one end of the circulation structure and the calibration structure are both connected to the liquid inlet component, and the other end of the circulation structure and the calibration structure are both connected to the liquid outlet component. The calibration component has a circulation state and a calibration state. When the calibration component is in the circulation state, the calibration structure is closed and the circulation structure is opened to spray the liquid. When the calibration assembly is in the calibration state, the circulation structure is closed and the calibration structure is opened to calibrate the flow detection device. In this way, when the staff needs to calibrate the injector test equipment, they only need to close the circulation structure and open the calibration structure. After the liquid flow in the calibration structure is stable, the data on the two pressure detection devices are recorded, and the standard flow is calculated through the pressure and flow formula, and compared with the data detected by the flow detection device. If the error of the flow detection device is large, the staff will adjust the flow detection device; if the error is within the normal range, the flow detection device can continue to be used normally. After the calibration is completed, the staff can close the calibration structure, open the circulation structure, and restore the normal operation of the injector test equipment. The above setting makes the entire calibration process simpler, reduces the intervention of the staff, reduces the labor intensity of the staff, and improves the work efficiency of the staff, thereby solving the problem of low flow calibration efficiency of the injector test equipment in the prior art. At the same time, the above setting of the calibration device and the storage device can also form a closed circulation system, which is conducive to maintaining the stability of liquid flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It shows a schematic diagram of the overall structure of an embodiment of an automatic calibration device for fuel injector flow according to the present invention;

[0019] Figure 2 Shows Figure 1Schematic diagram of the structure of the calibration device of the injector flow automatic calibration equipment.

[0020] The above drawings include the following reference numerals:

[0021] 10. Frame;

[0022] 20. Storage device;

[0023] 30. Calibration device; 31. Liquid inlet assembly; 32. Calibration assembly; 321. Flow structure; 3211. Injection unit; 322. Calibration structure; 323. First adjustment structure; 324. Second adjustment structure; 325. Calibration unit; 33. Liquid outlet assembly;

[0024] 40. Pressure detection device;

[0025] 50. Flow detection device;

[0026] 60. Heat dissipation device;

[0027] 70. bearing device; 71. bearing cavity;

[0028] 80. Connecting device;

[0029] 90. Display device;

[0030] 100. Mask body. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0033] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0034] In order to solve the problem of low flow calibration efficiency of injector test equipment in the prior art, the present application provides an injector flow automatic calibration device.

[0035] like Figure 1 and Figure 2As shown, the injector flow automatic calibration device includes a frame 10, a storage device 20, a calibration device 30, two pressure detection devices 40 and a flow detection device 50. The storage device 20 is arranged on the frame 10, and the storage device 20 has a storage cavity, a liquid inlet and a liquid outlet, and the storage cavity is used to store liquid. The calibration device 30 is arranged outside the storage cavity, and the calibration device 30 includes a liquid inlet component 31, a calibration component 32 and a liquid outlet component 33 that are interconnected. The calibration component 32 is located between the liquid inlet component 31 and the liquid outlet component 33, and one end of the liquid inlet component 31 away from the calibration component 32 is connected to the liquid outlet, and one end of the liquid outlet component 33 away from the calibration component 32 is connected to the liquid inlet, so as to drive the liquid to flow in the storage cavity and the calibration device 30. The two pressure detection devices 40 are respectively arranged on the liquid inlet component 31 and the liquid outlet component 33 to detect the pressure of the liquid in the liquid inlet component 31 and the liquid outlet component 33. The flow detection device 50 is arranged on the liquid outlet component 33 to detect the flow of the liquid in the liquid outlet component 33. The calibration component 32 includes a circulation structure 321 and a calibration structure 322. One end of the circulation structure 321 and the calibration structure 322 are both connected to the liquid inlet component 31, and the other end of the circulation structure 321 and the calibration structure 322 are both connected to the liquid outlet component 33. The calibration component 32 has a circulation state and a calibration state. When the calibration component 32 is in the circulation state, the calibration structure 322 is closed and the circulation structure 321 is opened to spray liquid. When the calibration component 32 is in the calibration state, the circulation structure 321 is closed and the calibration structure 322 is opened to calibrate the flow detection device 50.

[0036] According to the technical solution of this embodiment, the storage device 20 of the automatic calibration device for the injector flow is arranged on the frame 10. The storage device 20 has a storage cavity, a liquid inlet and a liquid outlet. The storage cavity is used to store liquid. The calibration device 30 is arranged outside the storage cavity. The calibration device 30 includes a liquid inlet component 31, a calibration component 32 and a liquid outlet component 33 that are interconnected. The calibration component 32 is located between the liquid inlet component 31 and the liquid outlet component 33. The end of the liquid inlet component 31 away from the calibration component 32 is connected to the liquid outlet. The end of the liquid outlet component 33 away from the calibration component 32 is connected to the liquid inlet to drive the liquid to flow in the storage cavity and the calibration device 30. Two pressure detection devices 40 are respectively arranged on the liquid inlet component 31 and the liquid outlet component 33 to detect the pressure of the liquid in the liquid inlet component 31 and the liquid outlet component 33. The flow detection device 50 is arranged on the liquid outlet component 33 to detect the flow of the liquid in the liquid outlet component 33. The calibration component 32 includes a circulation structure 321 and a calibration structure 322. One end of the circulation structure 321 and the calibration structure 322 are both connected to the liquid inlet component 31, and the other end of the circulation structure 321 and the calibration structure 322 are both connected to the liquid outlet component 33. The calibration component 32 has a circulation state and a calibration state. When the calibration component 32 is in the circulation state, the calibration structure 322 is closed and the circulation structure 321 is opened to spray liquid. When the calibration component 32 is in the calibration state, the circulation structure 321 is closed and the calibration structure 322 is opened to calibrate the flow detection device 50. In this way, when the staff needs to calibrate the injector test equipment, they only need to close the circulation structure 321 and open the calibration structure 322. After the liquid flow in the calibration structure 322 is stable, the data on the two pressure detection devices 40 are recorded, and the standard flow is calculated by the pressure and flow formula, and compared with the data detected by the flow detection device 50. If the error of the flow detection device 50 is large, the staff will adjust the flow detection device 50; if the error is within the normal range, the flow detection device 50 can continue to be used normally. After the calibration is completed, the staff can close the calibration structure 322, open the circulation structure 321, and restore the normal operation of the injector test equipment. The above setting makes the entire calibration process simpler, reduces the intervention of the staff, reduces the labor intensity of the staff, and improves the work efficiency of the staff, thereby solving the problem of low efficiency of flow calibration of the injector test equipment in the prior art. At the same time, the above setting of the calibration device 30 and the storage device 20 can also form a closed circulation system, which is conducive to maintaining the stability of liquid flow.

[0037] In this embodiment, the formula for calculating flow rate by pressure is:

[0038]

[0039] Specifically, Q is the calculated standard flow rate; C dis the flow coefficient; A e is the flow area of ​​the liquid; ρ is the fluid density; ΔP is the difference between the pressure of the liquid in the liquid inlet component 31 and the pressure of the liquid in the liquid outlet component 33.

[0040] In this embodiment, the liquid is fuel.

[0041] In this embodiment, the pressure detection device 40 is a pressure sensor.

[0042] In this embodiment, the flow detection device 50 is a flow sensor.

[0043] like Figure 2 As shown, the calibration component 32 also includes a first regulating structure 323 and a second regulating structure 324. The first regulating structure 323 is arranged on the circulation structure 321 to connect or block the circulation structure 321 and the liquid inlet component 31. The second regulating structure 324 is arranged on the calibration structure 322 to connect or block the calibration structure 322 and the liquid inlet component 31. When the circulation structure 321 is opened, the first regulating structure 323 connects the circulation structure 321 and the liquid inlet component 31. When the circulation structure 321 is closed, the first regulating structure 323 blocks the circulation structure 321 and the liquid inlet component 31. When the calibration structure 322 is opened, the second regulating structure 324 connects the calibration structure 322 and the liquid inlet component 31. When the calibration structure 322 is closed, the second regulating structure 324 blocks the calibration structure 322 and the liquid inlet component 31. In this way, the calibration component 32 controls the opening and closing of the circulation structure 321 through the first adjustment structure 323, and controls the opening and closing of the calibration structure 322 through the second adjustment structure 324, making the opening and closing of the circulation structure 321 and the calibration structure 322 simpler, improving the automation of the calibration component 32, and reducing the difficulty of operation for the staff. At the same time, the above-mentioned setting makes the opening and closing of the circulation structure 321 and the calibration structure 322 more flexible, ensuring that the calibration component 32 automatically switches between the circulation state and the calibration state, thereby ensuring the reliability and smoothness of the operation of the injector automatic calibration device.

[0044] In this embodiment, the first regulating structure 323 and the second regulating structure 324 are both ball valves.

[0045] like Figure 2 As shown, the flow structure 321 is tubular and has a flow cavity, and the flow structure 321 includes an injection portion 3211. At least part of the injection portion 3211 is located in the flow cavity to inject liquid when the flow structure 321 is opened. In this way, the above arrangement enables the flow structure 321 to be opened, and the liquid flows from the liquid inlet assembly 31 into the flow structure 321 and is sucked and sprayed out by the fuel injector, thereby achieving the injection reliability of the fuel injector and ensuring the normal operation test of the fuel injector.

[0046] like Figure 2 As shown, the calibration structure 322 is tubular and has a calibration cavity, and the calibration component 32 also includes a calibration part 325. The calibration part 325 is arranged on the calibration structure 322 and is located in the calibration cavity, wherein the calibration part 325 is tubular, and the inner diameter D1 of the calibration part 325 and the inner diameter D2 of the calibration structure 322 satisfy: D1<D2. In this way, when the calibration structure 322 is in the open state, the above-mentioned setting of the calibration part 325 causes the pressure of the liquid flowing through the calibration part 325 to change, so that the control device obtains a standard flow value according to the pressure difference of the liquid between the liquid inlet component 31 and the liquid outlet component 33, and then compares the standard flow value with the flow value detected by the flow detection device 50, thereby ensuring the calibration reliability of the injector flow automatic calibration device.

[0047] Specifically, the calibration device 30 further includes a pump assembly. The pump assembly is arranged on the liquid inlet assembly 31 and / or the liquid outlet assembly 33 to drive the liquid to flow. In this way, the above arrangement not only realizes the circulation of the liquid between the storage chamber and the calibration device 30 through the pump assembly, but also reduces the production cost and processing cost of the calibration device 30 and reduces the processing difficulty of the staff. At the same time, the above arrangement ensures the stability of the liquid flow through the pump assembly, and provides a stable power guarantee for realizing the high-precision calibration of the injector flow automatic calibration device.

[0048] In this embodiment, the pump body assembly is a circulation pump.

[0049] Specifically, the injector flow automatic calibration device also includes a temperature detection device. The temperature detection device is arranged on the frame 10 to detect the temperature of the liquid in the storage chamber, and sends the detection result to the control device, and the control device controls the calibration component 32 to switch between the circulation state and the calibration state according to the detection result. In this way, when the temperature of the liquid in the storage chamber suddenly decreases, the control device can control the calibration component 32 to switch to the calibration state, and automatically calibrate the flow detection device 50, thereby avoiding the flow detection device 50 from reducing its own detection accuracy in an environment where the temperature decreases, thereby improving the detection reliability of the flow detection device 50, and also improving the environmental adaptability and calibration reliability of the injector flow automatic calibration device.

[0050] In this embodiment, the pressure detection device 40, the flow detection device 50, the first adjustment structure 323, and the second adjustment structure 324 are all connected to the control device, and the control device can also control the calibration component 32 to switch between the flow state and the calibration state at a regular time.

[0051] Specifically, the injector flow automatic calibration device also includes a heating device. The heating device is arranged on the storage device 20, and the heating device is connected to the control device. The control device controls the heating device to heat the liquid in the storage chamber according to the detection result. In this way, when the temperature of the liquid in the storage chamber decreases, the heating device heats the storage device 20, thereby heating the liquid, ensuring the flow reliability of the liquid, avoiding the measurement error caused by the decrease in the liquid temperature, and further ensuring the calibration reliability of the injector flow automatic calibration device. At the same time, the above-mentioned setting also ensures that the pressure detection device 40 and the flow detection device 50 can be detected within the normal temperature range, ensuring the accuracy of the detection, and further ensuring the calibration reliability of the injector flow automatic calibration device.

[0052] In this embodiment, when the control device controls the calibration device to start, the heating device heats the liquid until the temperature of the liquid meets the requirements. At the same time, the control device initializes the pressure detection device and the flow detection device, and reads the initial calibration data.

[0053] Specifically, the injector flow automatic calibration device also includes a heat sink 60. The heat sink 60 is arranged on the storage device 20 and outside the storage cavity, so as to dissipate the heat of the liquid in the storage cavity. In this way, when the temperature of the liquid is higher than the normal temperature, the heat sink 60 can dissipate the heat of the liquid, thereby avoiding damage to the device due to the excessive temperature of the liquid, and also ensuring the normal operation of the device and the operating reliability of the injector flow automatic calibration device. At the same time, the above arrangement also ensures that the pressure detection device 40 and the flow detection device 50 can be detected within the normal temperature range, ensuring the accuracy of the detection, and further ensuring the calibration reliability of the injector flow automatic calibration device.

[0054] like Figure 1 As shown, the injector flow automatic calibration device also includes a carrying device 70, a connecting device 80 and a display device 90. The carrying device 70 is arranged on the frame 10, and the carrying device 70 has a carrying cavity 71. The connecting device 80 is arranged on the carrying device 70 and is located in the carrying cavity 71, and the connecting device 80 is used to connect and disconnect the external power supply. The display device 90 is arranged on the carrying device 70 and is located outside the carrying cavity 71 to display the detection data of the pressure detection device 40 and the detection value of the flow detection device 50. In this way, the above-mentioned setting realizes the safe connection between the injector flow automatic calibration device and the external power supply, and ensures the intelligence and operation reliability of the injector flow automatic calibration device. At the same time, the display device 90 can provide the staff with intuitive equipment status and data display, ensure the monitoring reliability of the staff, and improve the work efficiency of the staff.

[0055] In this embodiment, the display device 90 is a touch screen.

[0056] In this embodiment, the connecting device 80 can also connect various sensors and actuators.

[0057] like Figure 1 As shown, the injector flow automatic calibration device further includes a cover body 100, the bottom of which is connected to the outer peripheral surface of the carrier device 70. In this way, the cover body 100 can separate the equipment in the carrier device 70 from the outside world, thereby preventing the equipment in the carrier device 70 from being affected by the external environment, which would reduce the operating stability and safety of the injector flow automatic calibration device. On the other hand, it also prevents the equipment in the carrier device 70 from harming the staff during operation, thereby ensuring the working safety of the staff.

[0058] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0059] The storage device of the injector flow automatic calibration device is arranged on the frame, and the storage device has a storage cavity, a liquid inlet and a liquid outlet, and the storage cavity is used to store liquid. The calibration device is arranged outside the storage cavity, and the calibration device includes a liquid inlet component, a calibration component and a liquid outlet component which are interconnected, and the calibration component is located between the liquid inlet component and the liquid outlet component, and one end of the liquid inlet component away from the calibration component is connected to the liquid outlet, and one end of the liquid outlet component away from the calibration component is connected to the liquid inlet, so as to drive the liquid to flow in the storage cavity and the calibration device. Two pressure detection devices are respectively arranged on the liquid inlet component and the liquid outlet component to detect the pressure of the liquid in the liquid inlet component and the liquid outlet component. The flow detection device is arranged on the liquid outlet component to detect the flow of the liquid in the liquid outlet component. Among them, the calibration component includes a circulation structure and a calibration structure, one end of the circulation structure and the calibration structure are both connected to the liquid inlet component, and the other end of the circulation structure and the calibration structure are both connected to the liquid outlet component. The calibration component has a circulation state and a calibration state. When the calibration component is in the circulation state, the calibration structure is closed and the circulation structure is opened to spray liquid. When the calibration assembly is in the calibration state, the circulation structure is closed and the calibration structure is opened to calibrate the flow detection device. In this way, when the staff needs to calibrate the injector test equipment, they only need to close the circulation structure and open the calibration structure. After the liquid flow in the calibration structure is stable, the data on the two pressure detection devices are recorded, and the standard flow is calculated through the pressure and flow formula, and compared with the data detected by the flow detection device. If the error of the flow detection device is large, the staff will adjust the flow detection device; if the error is within the normal range, the flow detection device can continue to be used normally. After the calibration is completed, the staff can close the calibration structure, open the circulation structure, and restore the normal operation of the injector test equipment. The above setting makes the entire calibration process simpler, reduces the intervention of the staff, reduces the labor intensity of the staff, and improves the work efficiency of the staff, thereby solving the problem of low flow calibration efficiency of the injector test equipment in the prior art. At the same time, the above setting of the calibration device and the storage device can also form a closed circulation system, which is conducive to maintaining the stability of liquid flow.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An injector flow automatic calibration device, characterized in that: include: Frame (10); A storage device (20) is arranged on the frame (10), the storage device (20) having a storage cavity, a liquid inlet and a liquid outlet, the storage cavity being used to store liquid; A calibration device (30) is arranged outside the storage cavity, the calibration device (30) comprising a liquid inlet component (31), a calibration component (32) and a liquid outlet component (33) which are connected to each other, the calibration component (32) is located between the liquid inlet component (31) and the liquid outlet component (33), one end of the liquid inlet component (31) away from the calibration component (32) is connected to the liquid outlet, and one end of the liquid outlet component (33) away from the calibration component (32) is connected to the liquid inlet, so as to drive the liquid to flow in the storage cavity and the calibration device (30); Two pressure detection devices (40) are respectively arranged on the liquid inlet component (31) and the liquid outlet component (33) to detect the pressure of the liquid in the liquid inlet component (31) and the liquid outlet component (33); A flow detection device (50) is arranged on the liquid outlet component (33) to detect the flow rate of the liquid in the liquid outlet component (33); The calibration component (32) comprises a circulation structure (321) and a calibration structure (322); one end of the circulation structure (321) and the calibration structure (322) are both in communication with the liquid inlet component (31); the other ends of the circulation structure (321) and the calibration structure (322) are both in communication with the liquid outlet component (33); the calibration component (32) has a circulation state and a calibration state; when the calibration component (32) is in the circulation state, the calibration structure (322) is closed and the circulation structure (321) is opened to spray the liquid; When the calibration component (32) is in the calibration state, the flow structure (321) is closed and the calibration structure (322) is opened to calibrate the flow detection device (50).

2. The injector flow automatic calibration device according to claim 1, characterized in that: The calibration component (32) further comprises: A first regulating structure (323) is arranged on the flow structure (321) to connect or block the flow structure (321) and the liquid inlet component (31); A second regulating structure (324) is arranged on the calibration structure (322) to connect or block the calibration structure (322) and the liquid inlet component (31); Wherein, when the circulation structure (321) is opened, the first regulating structure (323) connects the circulation structure (321) and the liquid inlet component (31); when the circulation structure (321) is closed, the first regulating structure (323) blocks the circulation structure (321) and the liquid inlet component (31); When the calibration structure (322) is opened, the second regulating structure (324) connects the calibration structure (322) and the liquid inlet component (31); when the calibration structure (322) is closed, the second regulating structure (324) blocks the calibration structure (322) and the liquid inlet component (31).

3. The injector flow automatic calibration device according to claim 2, characterized in that: The flow structure (321) is tubular and has a flow cavity. The circulation structure (321) includes a spray portion (3211), and at least a portion of the spray portion (3211) is located in the circulation cavity so as to spray the liquid when the circulation structure (321) is opened.

4. The automatic calibration device for injector flow according to claim 2, characterized in that: The calibration structure (322) is tubular and has a calibration cavity. The calibration component (32) further comprises a calibration portion (325) which is arranged on the calibration structure (322) and is located in the calibration cavity. The calibration portion (325) is tubular, and the inner diameter D1 of the calibration portion (325) and the inner diameter D2 of the calibration structure (322) satisfy the relationship: D1<D2.

5. The injector flow automatic calibration device according to claim 3, characterized in that: The calibration device (30) further comprises a pump body assembly, wherein the pump body assembly is arranged on the liquid inlet assembly (31) and / or the liquid outlet assembly (33) to drive the liquid to flow.

6. The injector flow automatic calibration device according to claim 3, characterized in that: The injector flow automatic calibration device also includes a temperature detection device, which is arranged on the frame (10) to detect the temperature of the liquid in the storage chamber and send the detection result to the control device. The control device controls the calibration component (32) to switch between the flow state and the calibration state according to the detection result.

7. The automatic calibration device for injector flow rate according to claim 6, characterized in that: The injector flow automatic calibration device also includes a heating device, which is arranged on the storage device (20) and connected to the control device. The control device controls the heating device to heat the liquid in the storage chamber according to the detection result.

8. The injector flow automatic calibration device according to claim 1, characterized in that: The injector flow automatic calibration device further comprises a heat dissipation device (60), which is arranged on the storage device (20) and outside the storage cavity, so as to dissipate the heat of the liquid in the storage cavity.

9. The automatic calibration device for injector flow rate according to claim 1, characterized in that: The injector flow automatic calibration device also includes: A carrying device (70) is arranged on the frame (10), and the carrying device (70) has a carrying cavity (71); A connecting device (80), arranged on the carrying device (70) and located in the carrying cavity (71), the connecting device (80) being used to connect and disconnect an external power source; A display device (90) is arranged on the carrying device (70) and is located outside the carrying cavity (71) to display the detection data of the pressure detection device (40) and the detection value of the flow detection device (50).

10. The automatic calibration device for injector flow rate according to claim 9, characterized in that: The injector flow automatic calibration device further comprises a cover body (100), the bottom of the cover body (100) being connected to the outer peripheral surface of the supporting device (70).

Images