A sealing device for flange connection instrument calibration

Abstract

The utility model relates to a sealing device for flange-connected instrument calibration. The sealing device for flange-connected instrument calibration includes an upper cover flange, a base flange and a quick locking mechanism; the upper cover flange has a notch; the upper side of the base flange is sealed with the flange of the flange-connected instrument, and the lower side of the base flange is provided with a test tube connected to the center hole; a plurality of quick locking mechanisms are used to lock the upper cover flange and the base flange, so that the upper cover flange presses the flange-connected instrument onto the base flange. The sealing device for flange-connected instrument calibration of the utility model is provided with an upper cover flange and a base flange, and the quick locking mechanism presses the upper cover flange onto the base flange, thereby realizing a sealed connection between the flange-connected instrument and the base flange. The sealing device for flange-connected instrument calibration of the utility model can be used for flange-connected instruments of various specifications, and is simple to operate, convenient to use, and highly applicable.

Description

Technical Field

[0001] The utility model belongs to the technical field of flange connection, and in particular relates to a sealing device used for flange connection instrument calibration. Background Art

[0002] Flange connection is a commonly used connection method in industrial equipment. It uses multiple bolts to tightly connect two flanges together to ensure the sealing and stability between the equipment. Pressure instruments with flange connection are widely used in industrial pipelines, containers or equipment. They are the main instruments for monitoring the pressure of pipelines, containers or equipment. They are involved in the production process and are also used for production safety, such as emergency shutdown and interlock protection. The measurement performance and reliability of flange-connected pressure instruments directly affect the final efficiency of the entire factory production system. Pressure calibration of flange-connected pressure instruments helps to ensure the measurement performance and reliability of pressure instruments.

[0003] At present, when calibrating the pressure of flange-connected pressure instruments, the usual practice is to connect the flange-connected pressure instrument to the flange of the test bench through multiple bolt assemblies, and then connect the standard pressure source, standard pressure gauge, feedback signal, etc. Flange-connected pressure instruments have various specifications, and the flange sizes of flange-connected pressure instruments are also different. In order to connect with flange-connected pressure instruments of different specifications, multiple flanges of different sizes need to be set on the test bench, and the flanges need to be matched when used, which is inconvenient to operate. Setting multiple flanges also increases the manufacturing cost of the test bench. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a sealing device for flange connection instrument calibration.

[0005] The technical solution of a sealing device for flange connection instrument calibration of the utility model is:

[0006] A sealing device for flange connection instrument calibration, comprising an upper cover flange, a base flange and a plurality of quick locking mechanisms;

[0007] The upper cover flange has a notch connected to the center hole for an instrument pipe of an instrument connected to the flange to enter the center hole of the upper cover flange;

[0008] The upper side of the base flange is sealed with the flange of the flange connection instrument, and the lower side of the base flange is provided with a test tube connected with the center hole;

[0009] A plurality of the quick locking mechanisms are used to lock the upper cover flange and the base flange, so that the upper cover flange presses the flange-connected instrument onto the base flange.

[0010] Furthermore, a sealing ring coaxially arranged with the center hole of the base flange is provided on the upper side of the base flange.

[0011] Furthermore, the quick locking mechanism includes a locking hook, a locking rod, a guide block and two adjusting nuts. The locking hook and the guide block are correspondingly arranged on the upper cover flange and the base flange. The locking rod guide is installed on the guide block. The locking rod is provided with a threaded section. The two adjusting nuts are threadedly connected to the threaded section and are located on the upper and lower sides of the guide block.

[0012] Furthermore, the locking hook is arranged on the upper cover flange, and the quick locking mechanism includes a handle and a fixing plate, the fixing plate is fixedly connected to the base flange, the handle is hinged on the fixing plate, and the guide block is fixedly connected to the handle.

[0013] Furthermore, the locking rod is in an inverted U shape, the two vertical parts of the locking rod are guided and installed on the guide block, the lower ends of the two vertical parts of the locking rod are respectively provided with the threaded sections, and the horizontal part of the locking rod cooperates with the locking hook.

[0014] Furthermore, there are three quick locking mechanisms, and the three quick locking mechanisms are evenly spaced along the circumference of the upper cover flange.

[0015] The utility model provides a sealing device for flange connection instrument calibration, which has the following beneficial effects:

[0016] The sealing device for flange-connected instrument calibration of the utility model is provided with an upper cover flange and a base flange, the instrument pipe of the flange-connected instrument enters the upper cover flange through a notch, the flange plate of the flange-connected instrument is tightly sealed with the upper side of the base flange, and the quick locking mechanism presses the upper cover flange onto the base flange, thereby realizing a sealed connection between the flange-connected instrument and the base flange. The sealing device for flange-connected instrument calibration of the utility model can be used for flange-connected instruments of various specifications, is simple to operate, easy to use, and highly applicable; there is no need to provide multiple flange plates on the test bench, thereby reducing the manufacturing cost of the test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the upper cover flange in the sealing device for flange-connected instrument calibration of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a base flange in a sealing device for flange-connected instrument calibration of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a quick locking mechanism in a sealing device for flange connection instrument calibration of the utility model;

[0020] In the figure: 1. Upper cover flange; 2. Notch; 3. Lock hook; 4. Base flange; 5. Sealing ring; 6. Lock rod; 7. Fixing plate; 8. Handle; 9. Guide block; 10. Threaded section; 11. Adjusting nut. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0022] The specific embodiment of the sealing device for flange connection instrument calibration of the utility model is as follows: Figures 1 to 3 As shown, it includes an upper cover flange 1, a base flange 4 and a plurality of quick locking mechanisms; the upper cover flange 1 is a columnar structure, and the center hole of the upper cover flange 1 is located at its center. The upper cover flange 1 has a notch 2 connected to the center hole for the instrument pipe of the flange-connected instrument to enter the center hole of the upper cover flange 1, and the notch 2 extends radially along the upper cover flange 1, and the width of the notch 2 is smaller than the aperture of the center hole.

[0023] The base flange 4 is a cylindrical structure, and the center hole of the base flange 4 is located at its center. The upper side of the base flange 4 is sealed with the flange of the flange-connected instrument, and the lower side of the base flange 4 is provided with a test tube connected to the center hole. In order to enhance the sealing performance between the base flange 4 and the flange-connected instrument, a sealing ring 5 coaxially arranged with the center hole of the base flange 4 is fixedly connected to the upper side of the base flange 4. Preferably, the sealing ring 5 is a rubber ring.

[0024] There are three quick locking mechanisms, which are evenly spaced along the circumference of the upper cover flange 1. The three quick locking mechanisms are used to lock the upper cover flange 1 and the base flange 4 so that the upper cover flange 1 presses the flange connection instrument onto the base flange 4. The quick locking mechanism includes a lock hook 3, a lock rod 6, a handle 8, a fixing plate 7, a guide block 9 and two adjusting nuts 11. In this embodiment, the lock hook 3 is fixedly connected to the outer wall of the upper cover flange 1, and the lock rod 6 is arranged on the base flange 4. In other embodiments, the lock hook 3 can also be arranged on the base flange 4, and the lock rod 6 is arranged on the upper cover flange 1. Specifically, the fixing plate 7 is fixedly connected to the outer wall of the base flange 4, the handle 8 is hinged on the fixing plate 7, and the guide block is fixedly connected to the handle 8. The lock rod 6 is guided and installed on the guide block 9. Preferably, the lock rod 6 is in an inverted U shape, and the two vertical parts of the lock rod 6 are guided and installed on the guide block 9. The lower ends of the two vertical parts of the lock rod 6 are respectively provided with threaded sections 10, and the horizontal part of the lock rod 6 cooperates with the lock hook 3. Two adjusting nuts 11 are threadedly connected to the threaded section 10 and are located at the upper and lower sides of the guide block 9 .

[0025] When the sealing device for flange connection instrument calibration of the utility model is used, the upper cover flange 1 is first taken out, and the connection flange of the flange connection instrument to be inspected is placed on the base flange 4, and the flange connection instrument to be inspected is located on the sealing ring 5. In this process, the instrument pipe of the flange connection instrument to be inspected enters the central hole of the upper cover flange 1 through the notch 2. The position of the locking rod 6 is adjusted so that the locking rod 6 is hooked and matched with the locking hook 3, and the base flange 4 and the upper cover flange 1 are locked by the adjusting nut on the locking rod 6. The upper cover flange 1 seals and presses the flange connection instrument to be inspected against the base flange 4, completing the sealed connection between the flange connection instrument to be inspected and the test bench.

[0026] The sealing device for flange-connected instrument calibration of the utility model is provided with an upper cover flange 1 and a base flange 4, the instrument pipe of the flange-connected instrument enters the upper cover flange 1 through the notch 2, the flange plate of the flange-connected instrument is tightly sealed against the upper side of the base flange 4, and the quick locking mechanism presses the upper cover flange 1 against the base flange 4, so as to realize the sealed connection between the flange-connected instrument and the base flange 4. The sealing device for flange-connected instrument calibration of the utility model can be used for flange-connected instruments of various specifications, and is simple to operate, easy to use, and highly applicable; there is no need to provide multiple flange plates on the test bench, which reduces the manufacturing cost of the test bench.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing device for flange connection instrument calibration, characterized in that: It includes an upper cover flange, a base flange and a plurality of quick locking mechanisms; The upper cover flange has a notch connected to the center hole for an instrument pipe of an instrument connected to the flange to enter the center hole of the upper cover flange; The upper side of the base flange is sealed with the flange of the flange connection instrument, and the lower side of the base flange is provided with a test tube connected with the center hole; A plurality of the quick locking mechanisms are used to lock the upper cover flange and the base flange, so that the upper cover flange presses the flange-connected instrument onto the base flange.

2. The sealing device for flange connection instrument calibration according to claim 1, characterized in that: A sealing ring coaxially arranged with the center hole of the base flange is provided on the upper side of the base flange.

3. The sealing device for flange connection instrument calibration according to claim 1, characterized in that: The quick locking mechanism includes a locking hook, a locking rod, a guide block and two adjusting nuts. The locking hook and the guide block are correspondingly arranged on the upper cover flange and the base flange. The locking rod is guided and installed on the guide block. The locking rod is provided with a threaded section. The two adjusting nuts are threadedly connected to the threaded section and are located on the upper and lower sides of the guide block.

4. The sealing device for flange connection instrument calibration according to claim 3, characterized in that: The locking hook is arranged on the upper cover flange, the quick locking mechanism comprises a handle and a fixing plate, the fixing plate is fixedly connected to the base flange, the handle is hinged on the fixing plate, and the guide block is fixedly connected to the handle.

5. The sealing device for flange connection instrument calibration according to claim 4, characterized in that: The locking rod is in an inverted U shape, and the two vertical parts of the locking rod are guided and installed on the guide block. The lower ends of the two vertical parts of the locking rod are respectively provided with the threaded sections, and the horizontal part of the locking rod cooperates with the locking hook.

6. The sealing device for flange connection instrument calibration according to any one of claims 1 to 5, characterized in that: There are three quick locking mechanisms, and the three quick locking mechanisms are evenly spaced along the circumference of the upper cover flange.

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