Pressure testing instrument with protection function

Abstract

The utility model discloses a pressure calibrating appearance with protection function relates to instrument school examines equipment technical field, and specifically is including outer box, electric pressure pump, pressure regulator, three -way pipe, the inside fixed mounting of outer box has the baffle, electric pressure pump, pressure regulator and three -way pipe all fixed mounting in the baffle of outer box inside downside, the inner portion of three -way pipe is divided and is provided with stop valve, and the both ends export of three -way pipe respectively have benchmark table and the table of detection that inserts, the utility model discloses, and the installation dismounting mode is simple, through with the outlet end of three -way pipe and utilize the limiting plate of the limiting assembly of three -way pipe outlet end outside setting the contact of the sliding of instrument convex position top by inserting the instrument into three -way pipe's export end, just can limit the up and down movement of instrument, then rotates the two -way screw rod and makes the clamp block clamp -tight instrument, realizes the installation to instrument, utilizes the clamping effect and the limit of clamp block, avoids the instrument to fall and damage because of not firm in the process of pressurization and connects.

Description

Technical Field

[0001] This utility model relates to the field of instrument calibration equipment technology, specifically a pressure calibration instrument with protective function. Background Technology

[0002] Pressure gauges are used to detect the internal pressure of equipment. The accuracy of a pressure gauge directly affects the normal use and operation of the equipment. They are used in almost all industrial processes and scientific research fields, especially in industrial process control and technical measurement. Due to the high mechanical strength and ease of production of the elastic sensing element, pressure gauges are increasingly widely used. Pressure instruments are commonly used testing instruments, but after a certain period of use, they all require periodic calibration. Currently, the calibration method is: when the instrument's calibration validity period expires, it is necessary to disassemble and replace it with a qualified pressure gauge, and send the disassembled gauge to a professional institution for recalibration. Currently, pressure instrument calibration suffers from the problems of needing to disassemble and reassemble the instrument upon expiration, which is time-consuming and labor-intensive; and needing to send it to a professional inspection agency for calibration, which has a long cycle. Utility Model Content

[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a pressure testing instrument with protective functions, thus solving the problems mentioned in the background section.

[0004] (II) Technical Solution To achieve the above objectives, this utility model is implemented through the following technical solution: It includes an outer casing, an electric booster pump, a pressure regulator, and a three-way pipe. A partition is fixedly installed inside the outer casing. The electric booster pump, pressure regulator, and three-way pipe are all fixedly installed on the lower side of the partition inside the outer casing. A shut-off valve is provided at the flow distribution center inside the three-way pipe. A reference gauge and a gauge to be tested are respectively inserted into the two outlets of the three-way pipe. Limiting components are provided at the two outlets of the three-way pipe. The limiting components are characterized in that: the limiting components include a connecting ring, which is fixedly installed on the outer side of the outlet end of the three-way pipe. Support blocks are fixedly installed on both sides of the top of the connecting ring. A limiting plate is slidably installed inside the support block. A magnetic suction rod is rotatably installed inside the support block. A connecting block is fixedly installed on one side of the top of the connecting ring. A bidirectional lead screw is rotatably installed inside the connecting block, and a clamping block is threaded onto the outer side of the bidirectional lead screw.

[0005] Optionally, the top surface of the partition is provided with a positioning frame, the inner surface of the positioning frame is adapted to the outer surface of the reference table, and the reference table is fitted inside the positioning frame.

[0006] Optionally, the top surface of the partition is provided with a plurality of through holes, the inner diameter of which is equal to the outer diameter of the outlet end of the tee pipe and the outer diameter of the valve stem of the shut-off valve, respectively. The valve handle of the shut-off valve, the outlet end of the tee pipe, and the limiting component fixed to the outside of the outlet end of the tee pipe are provided on the upper side of the partition inside the outer casing.

[0007] Optionally, a sliding groove is provided inside the side wall of the connecting block, the height of which is equal to the height of one end of the clamping block, and one end of the clamping block is slidably installed in the sliding groove of the connecting block.

[0008] Optionally, the clamping block has a through hole at one end within the sliding groove. The inner surface of the through hole is adapted to the thread on the outer surface of the bidirectional lead screw, and the bidirectional lead screw is threadedly installed in the through hole of the clamping block.

[0009] Optionally, the side wall of the support block is provided with a through groove, the width and thickness of which are equal to the width and thickness of the limiting plate, and the limiting plate is slidably installed in the through groove of the support block.

[0010] Optionally, the support block has an installation groove on its lower side of the through groove. The inner diameter of the installation groove is equal to the distance from the center of the magnetic rod to the outer edge of its top. The magnetic rod is rotatably installed inside the installation groove of the support block.

[0011] This utility model provides a pressure calibrator with protective function, which has the following beneficial effects: 1. This pressure calibrator with protective function sets up an electric booster pump and pressure regulator inside an outer casing. Then, a three-way pipe connects the electric booster pump and pressure regulator to a reference gauge and a gauge to be tested. The reference gauge is used as a reference for comparison and calibration with the gauge to be tested, which improves the accuracy of calibration. The outer casing houses the electric booster pump and pressure regulator, enabling local calibration of pressure instruments and improving the timeliness of inspection.

[0012] 2. This pressure calibrator with protective function is easy to install and disassemble. By inserting the instrument into the outlet end of the tee pipe and using the sliding contact between the limiting plate of the limiting component set on the outside of the tee pipe outlet end and the top of the protruding part of the instrument, the up and down movement of the instrument can be restricted. Then, the double-acting screw is rotated to clamp the instrument with the clamping block, thus realizing the installation of the instrument. The clamping action of the clamping block and the limitation of the limiting plate prevent the instrument from falling and being damaged due to loose connection during the pressurization process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the outer casing of this utility model; Figure 3 This is a schematic diagram of the limiting component structure of this utility model; Figure 4 This is a top view of the limiting component structure of this utility model; Figure 5 This is a schematic diagram of the positioning structure of the limiting plate of this utility model.

[0014] In the diagram: 1. Outer casing; 2. Electric booster pump; 3. Pressure regulator; 4. T-pipe; 5. Partition plate; 501. Positioning frame; 6. Shut-off valve; 7. Reference gauge; 8. Gauge to be tested; 9. Limiting assembly; 901. Connecting ring; 902. Support block; 903. Limiting plate; 904. Magnetic rod; 905. Connecting block; 906. Two-way lead screw; 907. Clamping block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0016] Please see Figures 1 to 5 The present invention provides a technical solution comprising an outer casing 1, an electric booster pump 2, a pressure regulator 3, and a three-way pipe 4. A partition 5 is fixedly installed inside the outer casing 1. The electric booster pump 2, pressure regulator 3, and three-way pipe 4 are all fixedly installed on the lower side of the partition 5 inside the outer casing 1. A battery-type power supply is provided on the lower side of the partition 5 inside the outer casing 1 to power the electric booster pump 2. A shut-off valve 6 is installed at the flow distribution center inside the three-way pipe 4. A reference gauge 7 and a gauge to be tested 8 are respectively inserted into the two outlets of the three-way pipe 4. A sealing ring is installed inside the outlet end of the three-way pipe 4. Limiting components 9 are provided at both ends of the outlet of the pipe 4. The limiting components 9 include connecting rings 901, which are fixedly installed on the outside of the outlet end of the three-way pipe 4. Support blocks 902 are fixedly installed on both sides of the top of the connecting ring 901. Limiting plates 903 are slidably installed inside the support blocks 902. Magnetic rods 904 are rotatably installed inside the support blocks 902. A connecting block 905 is fixedly installed on one side of the top of the connecting ring 901. A bidirectional screw 906 is rotatably installed inside the connecting block 905. A clamping block 907 is threaded on the outside of the bidirectional screw 906.

[0017] Specifically, by placing the electric booster pump 2 and pressure regulator 3 inside the outer casing 1, and then connecting the electric booster pump 2 and pressure regulator 3 to the reference gauge 7 and the gauge to be tested 8 using the three-way pipe 4, the accuracy of the calibration is improved by comparing and verifying the reference gauge 7 with the gauge to be tested. The outer casing 1 houses the electric booster pump 2 and pressure regulator 3, enabling the pressure gauge to be calibrated nearby and the inspection to be timely. The installation and disassembly method is simple. By inserting the instrument into the outlet end of the three-way pipe 4 and using the sliding of the limiting plate 903 of the limiting component 9 set on the outside of the outlet end of the three-way pipe 4 to contact the top of the protruding part of the instrument, the up and down movement of the instrument can be restricted. Then, by rotating the double-acting screw 906, the clamping block 907 clamps the instrument, thus realizing the installation of the instrument. The clamping action of the clamping block 907 and the limitation of the limiting plate 903 prevent the instrument from falling and being damaged due to loose connection during the pressurization process.

[0018] Please refer to Figure 1 to Figure 2 The top surface of the partition 5 is provided with a positioning frame 501. The inner surface of the positioning frame 501 is adapted to the outer surface of the reference table 7, and the reference table 7 is snapped into the positioning frame 501.

[0019] Specifically, the positioning frame 501 is used to limit the position of the reference meter 7 when it is placed inside the outer box 1, so as to avoid damage to the reference meter 7.

[0020] Please refer to Figure 1 to Figure 2 The top surface of the partition 5 has multiple through holes. The inner diameter of the multiple through holes is equal to the outer diameter of the outlet end of the three-way pipe 4 and the outer diameter of the valve stem of the shut-off valve 6. The valve handle of the shut-off valve 6, the outlet end of the three-way pipe 4, and the limiting component 9 fixed on the outside of the outlet end of the three-way pipe 4 are located on the upper side of the partition 5 inside the outer box 1.

[0021] Specifically, the mounting part that connects to the instrument and the valve handle of the shut-off valve 6 are located on the upper side of the inner partition 5 of the outer casing 1, which facilitates the installation of the instrument, control during calibration, and observation during calibration.

[0022] Please refer to Figure 3 to Figure 5 The side wall of the connecting block 905 has a groove, the height of which is equal to the height of one end of the clamping block 907. One end of the clamping block 907 is slidably installed in the groove of the connecting block 905. The inner side wall of the clamping block 907 near the instrument has a rubber layer, which not only makes it easier to clamp the instrument, but also increases the sealing effect between the instrument and the connecting pipe.

[0023] The clamping block 907 has a through hole at one end in the slide groove. The inner surface of the through hole is adapted to the thread on the outer surface of the double-acting screw 906. The double-acting screw 906 is threadedly installed in the through hole of the clamping block 907.

[0024] Specifically, the rotation of the bidirectional lead screw 906 drives the clamping block 907 to move toward the instrument, thereby clamping the instrument.

[0025] Please refer to Figure 3 to Figure 5 The side wall of the support block 902 is provided with a through groove. The width and thickness of the through groove are equal to the width and thickness of the limiting plate 903, respectively. The limiting plate 903 is slidably installed in the through groove of the support block 902. The limiting plate 903 is made of metal and can generate a magnetic attraction with the magnetic rod 904.

[0026] A mounting groove is provided on the lower side of the through groove of the support block 902. The inner diameter of the mounting groove is equal to the distance from the center to the outer edge of the top of the magnetic rod 904. The magnetic rod 904 is rotatably installed inside the mounting groove of the support block 902. One end of the magnetic rod 904 is located on the outer side of the support block 902, which facilitates rotation. The magnetic rod 904 and the support block 902 are connected by a threaded rotation, which can fix the magnetic rod 904.

[0027] Specifically, a limit plate 903 is installed on the upper side of the protruding part of the instrument to restrict the upward movement of the instrument and prevent the instrument from falling and being damaged due to loose connection during the pressurization process.

[0028] In use, the device can be brought to the vicinity of the instrument through the outer casing 1. When calibrating the instrument, first insert the reference gauge 7 in the positioning frame 501 inside the casing into one outlet end of the tee pipe 4. Then, rotate the bidirectional screw 906 of the outer limiting component 9 at the outlet end to drive the clamping block 907 to move the center of the pipe opening, thereby clamping the inserted reference gauge 7. Then push the limiting plate 903 of the limiting component 9 closer to the instrument, so that the limiting plate 903 is located at the top of the protruding part of the instrument, thus restricting the upward movement of the instrument. Following the above steps, install the gauge to be tested 8 at the other outlet end of the tee pipe 4. Then start the electric booster pump 2 to supply air. Using the reference gauge 7 as a reference, compare and calibrate with the gauge to be tested 8, which improves the accuracy of calibration. By using the outer casing 1 to store the electric booster pump 2 and the pressure regulator 3, the pressure instrument can be calibrated nearby and the inspection can be carried out in a timely manner.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure calibrator with protective function, comprising an outer casing (1), an electric booster pump (2), a pressure regulator (3), and a three-way pipe (4), wherein a partition (5) is fixedly installed inside the outer casing (1), the electric booster pump (2), the pressure regulator (3), and the three-way pipe (4) are all fixedly installed on the lower side of the partition (5) inside the outer casing (1), a shut-off valve (6) is provided at the internal flow distribution center of the three-way pipe (4), a reference gauge (7) and a gauge to be tested (8) are respectively inserted into the two outlets of the three-way pipe (4), and limit components (9) are provided at the two outlets of the three-way pipe (4), characterized in that: The limiting component (9) includes a connecting ring (901), which is fixedly installed on the outside of the outlet end of the tee pipe (4). Support blocks (902) are fixedly installed on both sides of the top of the connecting ring (901). A limiting plate (903) is slidably installed inside the support block (902). A magnetic rod (904) is rotatably installed inside the support block (902). A connecting block (905) is fixedly installed on one side of the top of the connecting ring (901). A two-way screw (906) is rotatably installed inside the connecting block (905). A clamping block (907) is threaded on the outside of the two-way screw (906).

2. The pressure calibrator with protective function according to claim 1, characterized in that: The top surface of the partition (5) is provided with a positioning frame (501), the inner surface of the positioning frame (501) is adapted to the outer surface of the reference table (7), and the reference table (7) is fitted inside the positioning frame (501).

3. A pressure calibrator with protective function according to claim 1, characterized in that: The top surface of the partition (5) is provided with multiple through holes. The inner diameter of the multiple through holes is equal to the outer diameter of the outlet end of the three-way pipe (4) and the outer diameter of the valve stem of the shut-off valve (6). The valve handle of the shut-off valve (6), the outlet end of the three-way pipe (4), and the limiting component (9) fixed on the outside of the outlet end of the three-way pipe (4) are located on the upper side of the partition (5) inside the outer box (1).

4. A pressure calibrator with protective function according to claim 1, characterized in that: The connecting block (905) has a sliding groove inside its side wall. The height of the sliding groove is equal to the height of one end of the clamping block (907). One end of the clamping block (907) is slidably installed in the sliding groove of the connecting block (905).

5. A pressure calibrator with protective function according to claim 1, characterized in that: The clamping block (907) has a through hole at one end in the sliding groove. The inner surface of the through hole is adapted to the thread on the outer surface of the bidirectional lead screw (906). The bidirectional lead screw (906) is threadedly installed in the through hole of the clamping block (907).

6. A pressure calibrator with protective function according to claim 1, characterized in that: The side wall of the support block (902) is provided with a through groove. The width and thickness of the through groove are equal to the width and thickness of the limiting plate (903), respectively. The limiting plate (903) is slidably installed in the through groove of the support block (902).

7. A pressure calibrator with protective function according to claim 1, characterized in that: The support block (902) has an installation groove on the lower side of the through groove. The inner diameter of the installation groove is equal to the distance from the center to the outer edge of the top of the magnetic rod (904). The magnetic rod (904) is rotatably installed inside the installation groove of the support block (902).

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