CN219714731U - Off-line check table for safety valve - Google Patents

Abstract

The utility model discloses a safety valve offline calibration stand, which belongs to the field of valve calibration equipment and comprises a center console and a clamping table, wherein a precise pressure gauge (1) is arranged on the center console, a dial plate fixing ring (2) is arranged around each precise pressure gauge (1), and a center console pressure range regulating valve (3), a center console pressure regulating knob (4) and the like are arranged; the utility model enhances the firmness of the pressure gauge and also ensures that the appearance of the pressure gauge is more attractive; the pressure gauge is fixed by screwing the single nut against the back of the pressure gauge through the thick nut; when the pressure gauge is disassembled, only the thick nut is needed to be unscrewed, and the process can be finished by bare hands, so that time and labor are saved; the center console fully utilizes different forms such as handles, knobs, keys and the like, the functions of each function key are definite, the preferable shapes and colors are different, the occurrence of error operation is effectively avoided, and the operation accuracy and efficiency are improved.

Description

Off-line check table for safety valve

Technical Field

The utility model relates to the field of valve verification equipment, in particular to a safety valve offline verification table.

Background

The periodic check of the safety valve is an important measure for ensuring whether the safety valve can work accurately and reliably and eliminating the potential safety hazard of the protected pressure equipment. The safety valve checking technology mainly comprises two main types of off-line checking and on-line checking. Currently, for valves which are easy to disassemble and transport, off-line verification is generally adopted. The existing offline checking platform generally comprises a central console and a clamping platform, wherein the clamping platform is divided into a hydraulic clamping platform and a pneumatic clamping platform. The central console is a core component of the offline verification platform and comprises a plurality of pressure gauges and a plurality of operation keys.

The prior center console has at least the following disadvantages:

(1) Since the precision pressure gauge needs to be calibrated and checked frequently, the pressure gauge needs to be removed for each operation. The old pressure gauge adopts screw fixation, and a single pressure gauge needs four or more screws and nuts, so that the disassembly and the assembly processes are time-consuming and labor-consuming, and tools such as a screwdriver are needed to assist;

(2) Even though the fixing is performed in the above manner, the firmness is poor, because the four screws are used for unidirectional fixing, the precise pressure gauge has only one side of fixing force, and when the precise pressure gauge works, the center console can generate vibration with certain frequency, so that the precise pressure gauge is required to be firmly fixed, and if the precise pressure gauge is slightly loosened, errors can be generated in measurement data of the precise instrument; moreover, if loosening occurs, four or more screws are required to be fastened respectively, and the operation is complicated;

(3) The operation keys on the existing center console are in the form of handles, including the operations of center console pressure adjustment, clamping table pressure adjustment and the like, are in the form of handles, so that the operation is very inconvenient, and particularly the accurate adjustment is inconvenient; and are arranged in parallel basically, which is easy to cause misoperation caused by opening the wrong handle. In addition, the clamping force of the clamping table is judged by means of hand feeling and experience, the degree of tightness of the knob is judged manually, the force cannot be controlled accurately, or the control difficulty is high.

Disclosure of Invention

The utility model aims to provide an off-line check table for a safety valve so as to solve the problems.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

compared with the prior art, the utility model has the advantages that:

the utility model provides a relief valve off-line check table, includes well accuse platform and clamping table, the positive top of well accuse platform is equipped with the accurate manometer of at least three different ranges, all is provided with a dial plate solid fixed ring around every accurate manometer to be provided with well accuse platform pressure range governing valve and well accuse platform pressure adjust knob, and be provided with switch button, hydraulic clamping platform manometer, pressure regulating pump manometer and air pressure clamping platform manometer on the front left of well accuse platform still set gradually clamping table control panel, air supply entry manometer and air supply real-time manometer, clamping platform pressure adjust knob and check handle from top to bottom on the front right of well accuse platform the front below platform of well accuse platform is provided with the pressure release handle the left and right sides of well accuse platform is provided with gas cylinder and pressure regulating pump respectively.

As a preferable technical scheme: and a USB interface is also arranged on the central console. After the verification is completed, the verification data can be exported to the USB flash disk through the USB interface, and other computers can also be imported.

As a preferable technical scheme: and each precise pressure gauge fixing strip and one bolt are fixed on the back.

According to the precise pressure gauge, the dial plate fixing ring made of aluminum alloy is additionally arranged on the outer side of the precise pressure gauge, so that the firmness of the pressure gauge is enhanced, and the appearance of the pressure gauge is attractive;

according to the precision pressure gauge, as the dial plate fixing ring fixedly connected with the table surface of the central control table is arranged, the outer side of the precision pressure gauge is wrapped by the dial plate fixing ring, the inner side of the precision pressure gauge is provided with a extrusion force by a thick bolt to prop against the back surface of the precision pressure gauge, the precision pressure gauge is equivalent to a sandwich structure, and the two sides of the precision pressure gauge are fixed by external force; when the precise pressure gauge is disassembled, only the coarse nut is required to be unscrewed, and the process can be finished by bare hands, so that time and labor are saved;

in addition, the center console fully utilizes different forms such as the handle, the knob, the keys and the like, has definite functions of each function key, is preferable to have different shapes and colors, effectively avoids the occurrence of error operation, and improves the operation accuracy and efficiency;

in addition, the hydraulic clamping table pressure gauge, the pressure regulating pump pressure gauge and the pneumatic clamping table pressure gauge are additionally arranged at the proper position of the central control table, so that the real-time pressure is visualized, the operation is more convenient, and the data is more accurate.

Drawings

FIG. 1 is a perspective view of a console according to an embodiment of the present utility model;

FIG. 2 is a block diagram of the faceplate retaining ring of FIG. 1;

FIG. 3 is a left perspective view;

FIG. 4 is a right perspective view of FIG. 1;

fig. 5 is a fixed structure diagram of the precision pressure gauge.

In the figure: 1. a precision pressure gauge; 2. a dial plate fixing ring; 3. a pressure range regulating valve of the center console; 4. a center console pressure adjustment knob; 5. a power switch button; 6. a hydraulic clamping table pressure gauge; 7. a USB interface; 8. a clamping table control panel; 9. an air source inlet pressure gauge; 10. a clamping table pressure adjustment knob; 11. checking a handle; 12. a pressure release handle; 13. a gas cylinder; 14. a pressure regulating pump; 15. a bolt; 16. a fixing strip; 17. a pressure gauge for the pressure regulating pump; 18. a pneumatic clamping table pressure gauge; 19. an air source real-time pressure gauge; 20. a first station valve; 21. and a second station valve.

Description of the embodiments

The utility model will be further described with reference to the accompanying drawings.

Examples:

referring to fig. 1 to 4, an off-line check table for a safety valve comprises a center console and a clamping table, wherein ten precision pressure gauges 1 with different measuring ranges are arranged above the front surface of the center console, each precision pressure gauge 1 is fixed through a bolt 15, the bolt 15 is thicker than a conventional small screw so as to provide enough fixing force, a dial plate fixing ring 2 is arranged around each precision pressure gauge 1, the dial plate fixing ring 2 is in a shape structure as shown in fig. 2, the dial plate fixing ring 2 is fixed on the table surface of the center console through four independent screws, a fixing strip 16 is arranged on the precision pressure gauge 1, a thick bolt 15 supports the back surface of the precision pressure gauge 1 against the fixing strip 16 under the fixing supporting action of the fixing strip 16, a center console pressure range adjusting valve 3 and a center console pressure adjusting knob 4 are arranged,

the ten precise pressure gauges 1 are divided into 5 groups, namely two in each row and five in each row. Each column being a group as shown in fig. 1; the measuring ranges of the five columns of pressure gauges from left to right are respectively as follows: 1.6Mpa, 4Mpa, 10Mpa, 16Mpa, 60Mpa, i.e. the rightmost group of pressure gauges with the largest measuring range, the passage is always kept open (because the condition exceeding the largest measuring range is impossible, the passage can be always opened without worrying about the damage of the pressure gauges due to overpressure), therefore, four center console pressure range adjusting valves 3 are arranged, because only the left four groups of pressure gauges need to adjust the open/close state, and the four center console pressure range adjusting valves 3 respectively correspond to one passage (one measuring range);

the left side of the front of the center console is provided with a power switch button 5, a hydraulic clamping table pressure gauge 6, a pressure regulating pump pressure gauge 17 and a pneumatic clamping table pressure gauge 18, the right side of the front of the center console is also provided with a clamping table control panel 8, an air source inlet pressure gauge 9 and an air source real-time pressure gauge 19 (namely air source pressure regulated by the pressure regulating pump) from top to bottom in sequence, the clamping table control panel 8, the air source inlet pressure gauge 9 and the air source real-time pressure gauge 19 are all electrically connected with a circuit board in the center console, the center console is connected with the clamping table through wires, and when the center console is in operation, instructions of the clamping table control table and the clamping table pressure control knob are sent through the circuit board and then transmitted to the clamping table through wires, and clamping pressure data of the clamping table are transmitted back to the circuit board through a sensor and reflected on the clamping table pressure gauge;

the pressure regulating device is characterized by further comprising a clamping table pressure regulating knob 10 and a verification handle 11, wherein a pressure release handle 12 is arranged on a platform below the front surface of the center console, the verification handle 11 and the pressure release handle 12 are electrically connected with a circuit board, and when the pressure regulating device works, a pressure regulating pump 14 is controlled through the circuit board to realize the functions of verification and pressure release;

the left side and the right side of the center console are respectively provided with a gas cylinder 13 and a pressure regulating pump 14, and the gas cylinders 13 and the pressure regulating pumps 14 are connected through gas paths of gas pipes;

center console pressure adjusting knob: the device is divided into an upper knob and a lower knob, the upper adjusting range is large (used for large-range adjustment), the lower adjusting range is small (used for small-range precise adjustment), and the two knobs are internally connected with the pressure regulating pump 14) through a circuit;

in this embodiment, a USB interface 7 is further disposed on the central console;

during verification, firstly placing the safety valve to be verified on a corresponding pneumatic clamping table/hydraulic clamping table, carrying out clamping/loosening operation on the safety valve to be verified through a clamping table control panel 8, and rotating a clamping table pressure adjusting knob 10 through observing a clamping table pressure gauge 9 to ensure that the safety valve to be verified is firmly fixed on the clamping table;

then, a power switch button 5 of the center console is pressed, a power switch is turned on, a proper precision pressure gauge 1 is selected according to the range of the safety valve to be checked, a corresponding precision pressure gauge channel is opened through a pressure range regulating valve 3 of the center console, and the rest channel is closed; then the pressure release handle 12 is operated to ensure the evacuation of residual gas in the channel, then the corresponding operation is selected on the intelligent operation panel, the gas in the gas cylinder 13 is output, the pressure regulating pump 14 is remotely driven through the center console pressure regulating knob 4, and the gas pressure in the channel is regulated.

In addition, the center console of the present embodiment is configured with two clamping tables of hydraulic pressure and pneumatic pressure, and thus is provided with two station valves, namely, a first station valve 20 and a second station valve 21, which function to open the different clamping tables; opening the first station valve 20 and closing the second station valve 21, namely selecting an air pressure clamping table; opening the second station valve 21 and closing the first station valve 20, namely selecting a hydraulic clamping table; the two station valves are connected with the circuit board, and send instructions through the circuit board to control the clamping table;

the foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (3)

1. The utility model provides a relief valve off-line check table, includes well accuse platform and clamping table, the positive top of well accuse platform is equipped with accurate manometer (1) of at least three different ranges, its characterized in that: a dial plate fixing ring (2) is arranged around each precise pressure gauge (1), a center console pressure range adjusting valve (3) and a center console pressure adjusting knob (4) are arranged, a power switch button (5), a hydraulic clamping table pressure gauge (6), a pressure regulating pump pressure gauge (17) and a pneumatic clamping table pressure gauge (18) are arranged on the left side of the front of the center console, a clamping table control panel (8), an air source inlet pressure gauge (9) and an air source real-time pressure gauge (19), a clamping table pressure adjusting knob (10) and a checking handle (11) are further arranged on the right side of the front of the center console in sequence from top to bottom, a pressure releasing handle (12) is arranged on a platform below the front of the center console, and an air bottle (13) and a pressure regulating pump (14) are respectively arranged on the left side and the right side of the center console.

2. The safety valve off-line verification station of claim 1, wherein: and a USB interface (7) is also arranged on the center console.

3. The safety valve off-line verification station of claim 1, wherein: each precision pressure gauge (1) is fixed on the back through a fixing strip (16) and a bolt (15).