Transmitter checking tool

Abstract

The utility model discloses a transmitter checking tool which comprises a stainless steel pipe, two ends of the surface of the stainless steel pipe are sleeved with first hoops, the bottom ends of the two first hoops are provided with supporting mechanisms, one side of the top end of the stainless steel pipe is welded with a pressure buffer pipe, and the top end of the pressure buffer pipe is fixedly connected with a meter plug cock. A connector is welded to the other side of the top end of the stainless steel pipe, the surface of the connector is sleeved with a second hoop, a pot head pressure transmitter is clamped to the inner wall of the second hoop, variable diameters are welded to the two ends of the stainless steel pipe, and a first stop valve is fixedly installed at the end, away from the connector, of each variable diameter; according to the transmitter checking tool provided by the utility model, the transmitter checking tool does not need water, and only needs a small amount of compressed air, so that the water consumption of a workshop is greatly reduced, more energy is saved, and the economic cost in the checking process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of verification tools, in particular to a transmitter verification tool. Background Technique

[0002] A pressure transmitter refers to a pressure sensor with a standard signal output, which is an instrument that receives a pressure variable and converts it into a standard output signal proportionally.

[0003] The pressure transmitters in the workshop need to be verified every quarter, but the existing verification methods for pressure transmitters have the following disadvantages:

[0004] (1) According to the verification standard, 5t of water is injected through the upstream pipeline or the CIP pipeline, and the liquid level of the pot head after injecting 5t of water is compared with the standard liquid level. The verification deviation requirement is that within ±5cm is qualified. This pressure transmitter verification operation will cause an increase in water consumption in the workshop by 100t every quarter, which is not energy-saving enough.

[0005] (2) The existing verification tools for pressure transmitters are relatively troublesome to operate, not convenient to use, and have poor portability. Content of the Utility Model

[0006] The purpose of the utility model is to provide a transmitter verification tool to solve the existing problems mentioned in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A transmitter verification tool, including a stainless steel pipe. Both ends of the surface of the stainless steel pipe are sleeved with a first hoop. A support mechanism is installed at the bottom end of each of the two first hoops. A pressure buffer pipe is welded to one side of the top end of the stainless steel pipe. The top end of the pressure buffer pipe is fixedly connected with a meter cock. The top end of the meter cock is threadedly connected with a pressure gauge. A connector is welded to the other side of the top end of the stainless steel pipe. A second hoop is sleeved on the surface of the connector. A pot head pressure transmitter is clamped inside the second hoop. Reducers are welded to both ends of the stainless steel pipe. A first stop valve is fixedly installed at one end of the reducer far from the connector. A second stop valve is fixedly installed at one end of the reducer close to the connector. A threaded straight-through is threadedly connected to one end of each of the first stop valve and the second stop valve.

[0008] When using the transmitter verification tool of this technical solution, this transmitter verification tool does not require water and only needs a small amount of compressed air, which greatly reduces the water consumption in the workshop, is more energy-saving, and reduces the economic cost during the verification process.

[0009] As a preferred technical solution of the utility model, a sealing tape is wound around one end of the threaded straight-through. The provided sealing tape is used to enhance the tightness of the pipeline connection and prevent air leakage.

[0010] As a preferred technical solution of the present utility model, one end of the threaded straight-through pipe near the stop valve 1 is connected with an air duct, and one end of the air duct is connected with a pneumatic valve tuyere. The provided air duct is used to convey compressed air.

[0011] As a preferred technical solution of the present utility model, the support mechanism includes a connecting cylinder, a threaded hole, a threaded column and a support frame. A threaded hole is opened at the top end of the connecting cylinder. The inner wall of the threaded hole is threadedly connected with the threaded column, and the top end of the threaded column is welded to the bottom end of the first hoop. The bottom end of the connecting cylinder is welded with a support frame. The provided support mechanism can adjust the support height of the stainless steel pipe.

[0012] As a preferred technical solution of the present utility model, a limiting disc is fixedly connected to the bottom end of the threaded column. The provided limiting disc can prevent the threaded column from falling off from the connecting cylinder.

[0013] As a preferred technical solution of the present utility model, anti-slip pads are fixedly connected to both sides of the bottom end of the support frame. The provided anti-slip pads make the verification tool more stable when placed and not easy to slide.

[0014] As a preferred technical solution of the present utility model, an anti-slip sleeve is fixedly sleeved on the middle part of the stainless steel pipe. The provided anti-slip sleeve makes it not easy to slip when holding the verification tool and moving.

[0015] As a preferred technical solution of the present utility model, anti-slip lines are arranged on the surface of the anti-slip sleeve. The provided anti-slip lines further improve the anti-slip effect.

[0016] [[ID=1⑧]]Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. This transmitter verification tool does not require water, only a small amount of compressed air is needed, which greatly reduces the water consumption in the workshop, is more energy-saving, and reduces the economic cost during the verification process;

[0018] 2. This transmitter verification tool is simple to operate. The pot head pressure transmitter is conveniently disassembled by using the second hoop, without disassembling the electrical circuit, is convenient to use, can be height-adjusted, and is convenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of the present utility model;

[0020] Figure 2 is a perspective view of the stainless steel pipe part of the present utility model;

[0021] Figure 3 is a perspective view of the stop valve 2 part of the present utility model;

[0022] Figure 4 is a perspective view of the support mechanism of the present utility model;

[0023] Figure 5 This is a cross-sectional view of the connecting tube of the utility model.

[0024] In the figure: 1. Stainless steel pipe; 2. Reducer; 3. Stop valve 1; 4. Threaded straight-through; 5. Raw material tape; 6. Clamp 1; 7. Pressure buffer tube; 8. Gauge plug; 9. Pressure gauge; 10. Support mechanism; 101. Connecting tube; 102. Threaded hole; 103. Threaded column; 104. Support frame; 11. Connector; 12. Clamp 2; 13. Pot head pressure transmitter; 14. Air duct; 15. Pneumatic valve air head; 16. Stop valve 2; 17. Limit plate; 18. Anti-slip pad; 19. Anti-slip sleeve; 20. Anti-slip texture. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-5 The utility model provides a transmitter verification tool, including a stainless steel pipe 1, both ends of the surface of the stainless steel pipe 1 are sleeved with a clamp 6, and the bottom ends of the two clamps 6 are installed with a supporting mechanism 10 for supporting. A pressure buffer tube 7 is welded on one side of the top of the stainless steel pipe 1, and the top of the pressure buffer tube 7 is fixedly connected with a gauge plug 8. The top of the gauge plug 8 is threadedly connected with a pressure gauge 9 for detecting pressure. A connector 11 is welded on the other side of the top of the stainless steel pipe 1, and the surface of the connector 11 is sleeved with a clamp 2, and the inner wall of the clamp 2 12 is engaged with a pot head pressure transmitter 13 for easy disassembly and assembly. A reducer 2 is welded on both ends of the stainless steel pipe 1, and a stop valve 3 is fixedly installed on one end of the reducer 2 away from the connector 11, and a stop valve 2 16 is fixedly installed on one end of the reducer 2 close to the connector 11. One end of the stop valve 3 and one end of the stop valve 2 16 are both threadedly connected with a threaded straight-through 4 for connecting pipelines.

[0027] When in use, the pressure transmission verification tool is equipped with a calibrated pressure gauge 9 and a pot head pressure transmitter 13. The pot head pressure transmitter is easily disassembled by using a clamp 2 12. Remove the wind head of the nearby pneumatic valve, ensure that both stop valve 1 3 and stop valve 2 16 are open, connect stop valve 1 3, ensure that the compressed air is stable, observe the maximum overpressure on the nameplate of the pressure transmitter, manually adjust the valve opening of stop valve 1 3 and stop valve 2 16 to make the pressure gauge 9 reach a certain pressure value, maintain the pressure value for 5 minutes, and check whether the curve meets the verification standard range.

[0028] One end of the straight-through threaded pipe 4 is wound with PTFE tape 5 to improve the sealing performance. One end of the straight-through threaded pipe 4 close to the stop valve 1-3 is connected to an air duct 14, and one end of the air duct 14 is connected to a pneumatic valve tuyere 15 for inputting compressed air. A non-slip sleeve 19 is fixedly sleeved in the middle of the stainless steel pipe 1, and anti-slip grooves 20 are formed on the surface of the non-slip sleeve 19 to improve the anti-slip effect.

[0029] During use, unplug the nearest pneumatic valve tuyere 15 and connect it to the connector of the air duct 14. The other end of the air duct 14 is connected to the connector of the verification tool for inputting compressed air to check whether the components on the tool are air-leaking. If there is air leakage, seal it with PTFE tape 5. The silicone non-slip sleeve 19 and the anti-slip grooves 20 provided make it not easy to slip when holding the verification tool and moving.

[0030] The support mechanism 10 includes a connecting cylinder 101, a threaded hole 102, a threaded column 103 and a support frame 104. A threaded hole 102 is formed at the top end of the connecting cylinder 101. The inner wall of the threaded hole 102 is threadedly connected with a threaded column 103, and the top end of the threaded column 103 is welded to the bottom end of the first hoop 6. The bottom end of the connecting cylinder 101 is welded with a support frame 104, and the support height can be adjusted. A limit disc 17 is fixedly connected to the bottom end of the threaded column 103 to play a limiting role. Anti-slip pads 18 are fixedly connected to both sides of the bottom end of the support frame 104 to improve the anti-slip property.

[0031] During use, by rotating the connecting cylinder 101 at the support mechanism 10, and in cooperation with the threaded column 103, the support frame 104 can be driven to move up and down, and thus the height of the verification tool can be adjusted for easy use. The provided limit disc 17 can prevent the threaded column 103 from falling off the connecting cylinder 101, and the provided rubber anti-slip pads 18 make the verification tool more stable and not easy to slide when placed.

[0032] During actual use, for the verification tool of the utility model transmitter, when manufacturing this verification tool, a stainless steel pipe 1 with a diameter of 40 cm and a length of 30 cm is used as the main body, and a 1-meter square steel bar is cut into four sections for support. Two pipe clamps 6 are prepared for fixing the steel pipe. A connector 11 (matching the interface pipe size of each boiler pressure transmitter) is welded to one side of the top of the stainless steel pipe 1, and a reducer 2, a stop valve and a threaded straight-through 4 are assembled for connecting the air duct 14. Thread seal tape 5 is prepared for pipe fittings joints to enhance the airtightness of the pipe joints and prevent air leakage. A pressure buffer pipe 7 and a gauge cock 8 are welded to the stainless steel pipe 1 for connecting the mechanical pressure gauge 9. Thus, a pressure transmitter verification tool is assembled. The verification tool is assembled with a calibrated mechanical pressure gauge 9 and an air duct 14 with a compressed air connector, and brought to the side of the boiler to be verified. Corresponding disassembly and fixing tools are configured. Since the boiler head is relatively high, a table for placing tools is prepared on-site. It is confirmed that production is no longer in progress on the boiler head, and the boiler head is emptied. Through the manhole, it is observed that the inside of the boiler has been emptied to ensure the safety of the disassembly process. The pipe clamp is loosened to remove the pressure transmitter, and the nameplate of the pressure transmitter is checked to confirm the maximum overpressure. The removed pressure transmitter and washer are fixed to the corresponding positions on the tool, and the second pipe clamp 12 is tightened to prevent air leakage during the verification process. It is confirmed that the valves at both ends of the verification tool are in the open state. The air head on the pneumatic valve closest to the tool is unplugged and connected to the connector of the air duct 14, and the other end of the air duct 14 is connected to the connector of the verification tool. Check whether the components on the tool are airtight. If there is air leakage, use thread seal tape 5 for sealing. Manually adjust the opening of the valves at both ends to a certain pressure (not exceeding the maximum overpressure of the pressure transmitter), and maintain it for 5 minutes. Record a certain time and the value shown on the mechanical pressure gauge 9. Return to the operation computer and check whether the liquid level curve or pressure curve is consistent with the value on the mechanical pressure gauge 9. Check whether the corresponding boiler liquid level / pressure curve on the operation computer is consistent with the mechanical pressure gauge 9 (in the tetrasaccharide workshop, 0.1 MPa ≈ 1000 cm). Whether the liquid level deviation standard meets ±5 cm and whether the pressure deviation standard meets ±0.01 MPa. After completion, pull out the compressed air duct 14 from the tool and insert it back into the air head 15 of the pneumatic valve. Remove the pressure transmitter from the tool and install it back to its original position together with the washer, and fix it firmly. Pack up the remaining tools used on-site and put them back to the designated positions. The boiler head pressure transmitter 13 is conveniently disassembled by using the second pipe clamp 12 without disassembling the electrical circuit. For a pressure transmitter with a threaded port, when manufacturing the pressure transmitter, it can be used by changing the interface. The pressure gauge 9 and the pressure transmitter should be used in a matching manner to prevent damage to the pressure transmitter during verification. By rotating the connecting cylinder 101 at the support mechanism 10, and in cooperation with the threaded column 103, the support frame 104 can be driven to move up and down, and thus the height of the verification tool can be adjusted for convenient use.

[0033] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A transmitter verification tool comprising a stainless steel tube (1), characterized in that: Both ends of the surface of the stainless steel pipe (1) are sleeved with a first hoop (6). A support mechanism (10) is installed at the bottom end of each of the two first hoops (6). One side of the top end of the stainless steel pipe (1) is welded with a pressure buffer pipe (7). The top end of the pressure buffer pipe (7) is fixedly connected with a surface cock (8). The top end of the surface cock (8) is threadedly connected with a pressure gauge (9). The other side of the top end of the stainless steel pipe (1) is welded with a connector (11). A second hoop (12) is sleeved on the surface of the connector (11). A boiler head pressure transmitter (13) is clamped inside the second hoop (12). Reducers (2) are welded at both ends of the stainless steel pipe (1). A first stop valve (3) is fixedly installed at one end of the reducer (2) away from the connector (11). A second stop valve (16) is fixedly installed at one end of the reducer (2) close to the connector (11). One end of the first stop valve (3) and one end of the second stop valve (16) are both threadedly connected with a threaded straight-through pipe (4).

2. The transmitter verification tool according to claim 1, wherein: A raw tape (5) is wound around one end of the threaded straight-through pipe (4).

3. The transmitter verification tool according to claim 1, wherein: One end of the threaded straight-through pipe (4) close to the first stop valve (3) is connected with an air duct (14). One end of the air duct (14) is connected with a pneumatic valve tuyere (15).

4. The transmitter verification tool according to claim 1, characterized in that: The support mechanism (10) includes a connecting cylinder (101), a threaded hole (102), a threaded column (103) and a support frame (104). A threaded hole (102) is opened at the top end of the connecting cylinder (101). The inner wall of the threaded hole (102) is threadedly connected with the threaded column (103), and the top end of the threaded column (103) is welded to the bottom end of the first hoop (6). The bottom end of the connecting cylinder (101) is welded with a support frame (104).

5. The transmitter verification tool according to claim 4, wherein: A limit disc (17) is fixedly connected to the bottom end of the threaded column (103).

6. The transmitter verification tool according to claim 4, characterized in that: Anti-slip pads (18) are fixedly connected to both sides of the bottom end of the support frame (104).

7. The transmitter verification tool according to claim 1, characterized in that: An anti-slip sleeve (19) is fixedly sleeved on the middle part of the stainless steel pipe (1).

8. The transmitter verification tool according to claim 7, wherein: Anti-slip patterns (20) are arranged on the surface of the anti-slip sleeve (19).

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