Flange type flowmeter pressure testing device

Abstract

The utility model discloses a flange type flowmeter pressure testing device, which belongs to the field of flowmeter pressure testing devices, and is characterized in that a part connected with a flange type flowmeter is arranged into a pressure testing cylinder body structure form, and a movable sealing cover for sealing gas is arranged in the pressure testing cylinder body structure form; when a next flowmeter needs to be disassembled and replaced for pressure measurement, only the two fasteners need to be separated towards the two sides, the flange part at the bottom of the flange type flowmeter body can be automatically jacked upwards by the movable sealing cover due to lack of limiting constraint, and the flange part is separated from the top of the pressure test cylinder body; meanwhile, the movable sealing cover which is jacked up automatically seals the top of the pressure test cylinder body through the sealing edge, part of gas is sealed and reserved in the pressure test cylinder body, and a pressure maintaining state is presented, so that the installation pressure test work of a next flowmeter is facilitated, the inflation volume in the pressure test cylinder body during the installation pressure test of the next flowmeter is reduced, the waiting time is shortened, and the working efficiency is improved. And rapid and continuous pressure test work of mass flowmeters is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of flow meter pressure testing devices, and more specifically to a flange type flow meter pressure testing device. Background Art

[0002] Flowmeter is the eye of industrial production and one of the components of metrology science and technology. It is closely related to the national economy, national defense construction, and scientific research. Flowmeters include gas flowmeters and liquid flowmeters. In order to ensure the accuracy of flowmeter measurement, gas flowmeters need to be pressure tested and calibrated before leaving the factory, so a pressure test device for gas flowmeter pressure testing is needed.

[0003] The existing gas flow meter pressure test device lacks a corresponding pressure maintaining mechanism at the connection with the flow meter. When disassembling and replacing different flow meters for pressure testing, the gas inside the connection parts must be completely discharged before the flow meter can be disassembled and replaced to improve the safety during disassembly and assembly. However, such a mechanism needs to fill the gas inside the connection parts again when the next flow meter is reinstalled for pressure testing, which increases the inflation volume and waiting time, and is not conducive to the rapid and continuous pressure testing of large quantities of flow meters. Therefore, we propose a flange flow meter pressure test device to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a flange type flow meter pressure testing device, which arranges the components connected to the flange type flow meter into a pressure testing cylinder structure, and is provided with a movable sealing cover for gas sealing inside, so that when the next flow meter is to be disassembled and replaced for pressure measurement, only two fasteners need to be pried apart to both sides, and the flange part at the bottom of the flange type flow meter body can be automatically lifted up by the movable sealing cover due to the lack of limiting constraints, and be separated from the connection with the top of the pressure testing cylinder. At the same time, the movable sealing cover that is lifted up automatically seals the top of the pressure testing cylinder through the sealing edge, and retains part of the gas seal inside the pressure testing cylinder to present a pressure maintaining state, thereby facilitating the installation and pressure testing of the next flow meter, reducing the amount of gas filled inside the pressure testing cylinder when the next flow meter is installed and pressure tested, reducing waiting time, and being conducive to the rapid and continuous pressure testing of large quantities of flow meters.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A flange flow meter pressure test device, comprising a pressure test cylinder, a gas storage tank is arranged on one side of the pressure test cylinder, an air pump is fixedly installed on the top of the gas storage tank, the bottom of the pressure test cylinder is fixedly installed with the bottom of the gas storage tank by a bracket, the gas outlet end of the solenoid valve on the air pump is connected with the gas inlet end of the gas storage tank through a gas pipe 1, a gas pipe joint is arranged on one side of the outer wall of the pressure test cylinder, and the gas pipe joint is connected with the gas outlet end of the gas storage tank through a gas pipe 2 and a pressure valve;

[0009] A flange-type flowmeter body and an upper sealing plate are arranged on the top of the pressure test cylinder body. The interior of the pressure test cylinder body is a hollow structure, and a movable sealing cover is arranged inside the pressure test cylinder body. The movable sealing cover includes a conical protrusion and a sealing edge. A sealing ring is fixedly attached to the sealing edge, and a ventilation groove is opened on the conical protrusion.

[0010] Furthermore, a group of avoidance grooves are opened on the outer edge of the top of the pressure test cylinder body, and a fastener is rotatably connected to the inside of the avoidance groove through a rotating shaft. A handle is fixedly welded on one side of the top of the fastener, and a support spring is arranged at the bottom of the fastener, and two ends of the support spring are respectively in contact with one side of the outer wall of the pressure test cylinder body and one side of the bottom of the fastener.

[0011] Furthermore, the flange portion at the bottom of the flange type flowmeter body is in contact with the top of the pressure test cylinder, and a hook section is provided on the top of the fastener. The hook sections on the top of the two fasteners are both snap-connected with the top of the flange portion of the flange type flowmeter body, and the upper sealing plate is fixedly installed on the flange portion at the top of the flange type flowmeter body by screws.

[0012] Furthermore, the outer edge of the sealing edge is slidably connected to the inner wall of the pressure test cylinder, and the bottom of the movable sealing cover is connected to the bottom of the inner wall of the pressure test cylinder through a reset spring, and the top of the conical protrusion contacts the inner wall of the bottom flange of the flange flowmeter body.

[0013] Furthermore, the top of the air permeable groove extends to the top of the conical protrusion, the bottom of the air permeable groove extends to one side of the sealing edge, and the air permeable groove is not connected to the sealing edge.

[0014] Furthermore, a plurality of bolt holes are provided on the outer edge of the top of the pressure test cylinder, and the bolt holes are fixed to corresponding bolt holes on the bottom flange of the flange-type flowmeter body by screws.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] In this solution, the component connected to the flange type flow meter is arranged in the form of a pressure test cylinder structure, and a movable sealing cover for gas sealing is arranged inside, so that when the next flow meter is to be disassembled and replaced for pressure measurement, only two fasteners need to be pried apart to both sides. The flange part at the bottom of the flange type flow meter body can be automatically pushed up by the movable sealing cover due to the lack of limiting constraints, and separated from the connection with the top of the pressure test cylinder. At the same time, the movable sealing cover that is pushed up automatically seals the top of the pressure test cylinder through the sealing edge, and retains part of the gas seal inside the pressure test cylinder to present a pressure-maintaining state, thereby facilitating the installation and pressure test of the next flow meter, reducing the amount of gas filled inside the pressure test cylinder when the next flow meter is installed and pressure tested, reducing waiting time, and facilitating rapid and continuous pressure testing of large quantities of flow meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the pressure test cylinder of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the pressure test cylinder of the utility model;

[0021] Figure 4 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0022] Description of the numbers in the figure:

[0023] 1. Pressure test cylinder; 101. Air pipe joint; 102. Avoidance groove; 2. Air storage tank; 3. Air pump; 4. Bracket; 5. Air pipe one; 6. Air pipe two; 7. Flange flowmeter body; 8. Upper sealing plate; 9. Movable sealing cover; 901. Conical protrusion; 902. Sealing edge; 903. Sealing ring; 904. Breathing groove; 10. Fastener; 1001. Hook section; 11. Support spring; 12. Reset spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention specification; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] See also Figure 1-Figure 4A flange flowmeter pressure test device comprises a pressure test cylinder 1, a gas storage tank 2 is arranged on one side of the pressure test cylinder 1, an air pump 3 is fixedly installed on the top of the gas storage tank 2, a bracket 4 is fixedly installed between the bottom of the pressure test cylinder 1 and the bottom of the gas storage tank 2, an outlet end of the solenoid valve on the air pump 3 is connected to an inlet end of the gas storage tank 2 through an air pipe 1 5, an air pipe joint 101 is arranged on one side of the outer wall of the pressure test cylinder 1, and the air pipe joint 101 is connected to the outlet end of the gas storage tank 2 through an air pipe 2 6 and an air pressure valve;

[0027] A flange flowmeter body 7 and an upper sealing plate 8 are arranged on the top of the pressure test cylinder 1. The interior of the pressure test cylinder 1 is a hollow structure, and a movable sealing cover 9 is arranged inside the pressure test cylinder 1. The movable sealing cover 9 includes a conical protrusion 901 and a sealing edge 902. A sealing ring 903 is fixedly attached to the sealing edge 902, and a venting groove 904 is provided on the conical protrusion 901. A group of avoidance grooves 102 are provided on the outer edge of the top of the pressure test cylinder 1. The inside of the avoidance groove 102 rotates through the shaft. A fastener 10 is connected, a handle is fixedly welded on one side of the top of the fastener 10, a support spring 11 is arranged at the bottom of the fastener 10, two ends of the support spring 11 are respectively in contact with one side of the outer wall of the pressure test cylinder 1 and one side of the bottom of the fastener 10, the outer edge of the sealing edge 902 is slidingly connected to the inner wall of the pressure test cylinder 1, and the bottom of the movable sealing cover 9 is connected to the bottom of the inner wall of the pressure test cylinder 1 through a reset spring 12, and the top of the conical protrusion 901 is in contact with the inner wall of the bottom flange of the flange type flowmeter body 7.

[0028] The operating principle of this flange flowmeter pressure test device is:

[0029] First, place the flange flow meter body 7 on the top of the pressure test cylinder 1 through the flange at the bottom, and make the hook sections 1001 of the two fasteners 10 both stuck on the flange at the bottom of the flange flow meter body 7. For the sake of safety, the flange at the bottom of the flange flow meter body 7 and the bolt holes at the top of the pressure test cylinder 1 are connected by bolts to improve the stability of the connection. Then, the upper sealing plate 8 is fixedly installed on the flange at the top of the flange flow meter body 7 by screws. During the process of being installed and placed on the top of the pressure test cylinder 1, the inner wall of the flange part squeezes the top of the movable sealing cover 9, pushing the movable sealing cover 9 downward, at this time, the inside of the flange part at the bottom of the flange flowmeter body 7 can be connected with the inside of the pressure test cylinder 1 through the air permeable groove 904 on the conical protrusion 901 and the sealing edge 902, at this time, the air pump 3 can be started to inflate the inside of the gas storage tank 2, and then the gas stored in the gas storage tank 2 is released to the inside of the pressure test cylinder 1 through the air pipe 2 6 until the flange flowmeter body 7 meets the pressure test;

[0030] When it is necessary to remove the flange flowmeter body 7 and conduct a pressure test on the next flange flowmeter body 7, first remove the bolts connecting the flange flowmeter body 7 to the top of the pressure test cylinder 1, and then use the handle to pry the two fasteners 10 to both sides to separate the hook section 1001 from the flange part. At this time, due to the pressure inside the pressure test cylinder 1, the movable sealing cover 9 and the flange flowmeter body 7 are lifted up together, which facilitates the removal of the flange flowmeter body 7 and makes the sealing edge 902 contact and seal with the top of the inner wall of the pressure test cylinder 1, so as to maintain the pressure of the remaining gas inside the pressure test cylinder 1, thereby reducing the inflation amount of the gas inside the pressure test cylinder 1 after the next flange flowmeter body 7 is installed, thereby improving the convenience during use.

[0031] The fastener 10 is provided to facilitate the initial connection of the flange flowmeter body 7 during installation, so that the flange flowmeter body 7 can be directly fastened on the top of the pressure test cylinder 1, reducing the leakage of the internal gas of the pressure test cylinder 1 caused by the long process. The bottom of the fastener 10 can be supported by the support spring 11, thereby facilitating the fastening of the bottom flange of the flange flowmeter body 7.

[0032] Embodiment 2:

[0033] In view of the above embodiment 1, for further description, refer to Figure 2 and Figure 3 The flange portion at the bottom of the flange flowmeter body 7 is in contact with the top of the pressure test cylinder 1, and a hook section 1001 is provided on the top of the fastener 10. The hook sections 1001 at the top of the two fasteners 10 are both snap-fitted with the top of the flange portion of the flange flowmeter body 7. The upper sealing plate 8 is fixedly installed on the flange portion at the top of the flange flowmeter body 7 by screws. The top of the air permeable groove 904 extends to the top of the conical protrusion 901, and the bottom of the air permeable groove 904 extends to one side of the sealing edge 902, and the air permeable groove 904 is not connected to the sealing edge 902. A plurality of bolt holes are provided on the outer edge of the top of the pressure test cylinder 1, and the bolt holes and the corresponding bolt holes on the flange portion at the bottom of the flange flowmeter body 7 are fixedly installed by screws.

[0034] By opening the vent groove 904 , a gas passage can be reserved for the connection between the flange portion at the bottom of the flange type flow meter body 7 and the conical protrusion 901 , thereby preventing the gas inside the pressure test cylinder 1 from entering the flange type flow meter body 7 .

[0035] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A flange type flow meter pressure test device, comprising a pressure test cylinder (1), characterized in that: An air storage tank (2) is arranged on one side of the pressure test cylinder body (1), an air pump (3) is fixedly installed on the top of the air storage tank (2), the bottom of the pressure test cylinder body (1) and the bottom of the air storage tank (2) are fixedly installed via a bracket (4), the air outlet end of the solenoid valve on the air pump (3) is connected to the air inlet end of the air storage tank (2) via an air pipe 1 (5), an air pipe joint (101) is arranged on one side of the outer wall of the pressure test cylinder body (1), and the air pipe joint (101) is connected to the air outlet end of the air storage tank (2) via an air pipe 2 (6) and an air pressure valve; A flange-type flowmeter body (7) and an upper sealing plate (8) are arranged on the top of the pressure test cylinder (1); the interior of the pressure test cylinder (1) is a hollow structure, and a movable sealing cover (9) is arranged inside the pressure test cylinder (1); the movable sealing cover (9) comprises a conical protrusion (901) and a sealing edge (902); a sealing ring (903) is fixedly attached to the sealing edge (902), and a venting groove (904) is provided on the conical protrusion (901).

2. A flange type flow meter pressure testing device according to claim 1, characterized in that: A group of avoidance grooves (102) are provided on the outer edge of the top of the pressure test cylinder (1), and a fastener (10) is rotatably connected to the inside of the avoidance groove (102) via a rotating shaft. A handle is fixedly welded to one side of the top of the fastener (10), and a support spring (11) is provided at the bottom of the fastener (10), and two ends of the support spring (11) are respectively in contact with one side of the outer wall of the pressure test cylinder (1) and one side of the bottom of the fastener (10).

3. A flange type flow meter pressure testing device according to claim 2, characterized in that: The flange portion at the bottom of the flange type flow meter body (7) contacts the top of the pressure test cylinder (1), and a hook section (1001) is provided at the top of the fastener (10). The hook sections (1001) at the top of the two fasteners (10) are both snap-fitted to the top of the flange portion of the flange type flow meter body (7), and the upper sealing plate (8) is fixedly mounted on the flange portion at the top of the flange type flow meter body (7) by screws.

4. A flange type flow meter pressure testing device according to claim 1, characterized in that: The outer edge of the sealing edge (902) is slidably connected to the inner wall of the pressure test cylinder (1), and the bottom of the movable sealing cover (9) is connected to the bottom of the inner wall of the pressure test cylinder (1) via a reset spring (12), and the top of the conical protrusion (901) is in contact with the inner wall of the bottom flange of the flange type flow meter body (7).

5. A flange type flow meter pressure testing device according to claim 1, characterized in that: The top of the air permeable groove (904) extends to the top of the conical protrusion (901), the bottom of the air permeable groove (904) extends to one side of the sealing edge (902), and the air permeable groove (904) is not connected to the sealing edge (902).

6. A flange type flow meter pressure testing device according to claim 1, characterized in that: A plurality of bolt holes are provided on the top outer edge of the pressure test cylinder (1), and the bolt holes are fixed to corresponding bolt holes on the bottom flange of the flange type flow meter body (7) by means of screws.

Images