CN216207347U - Automatic suppress leak hunting device - Google Patents
Automatic suppress leak hunting device Download PDFInfo
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- CN216207347U CN216207347U CN202122518639.7U CN202122518639U CN216207347U CN 216207347 U CN216207347 U CN 216207347U CN 202122518639 U CN202122518639 U CN 202122518639U CN 216207347 U CN216207347 U CN 216207347U
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Abstract
The utility model relates to an automatic pressurizing leakage detecting device, which comprises an electric lifter and an electric pressurizing machine, wherein the electric lifter comprises a motor, a pressurizing rod and a pressure rod; the electric lifter comprises a lifter bracket for fixing the electric lifter and a lifting rod capable of moving in the vertical direction; a first flange is fixed at the lower end of the lifting rod; the electric press comprises a liquid storage tank; the first end of the high-pressure rubber tube is connected with the liquid storage tank; the second end of the high-pressure rubber tube is connected with a second flange; the second flange is fixed on the elevator bracket, and the position of the second flange is below the first flange; the space between the second flange and the first flange is a detection position. The utility model can realize full-automatic operation without manual screw rotation, fixation, disassembly and assembly, thereby greatly saving the operation time of the device and ensuring safer operation process.
Description
Technical Field
The utility model relates to the field of detection, in particular to an automatic pressing leak detection device.
Background
In the production process of the flange type instrument and the valve, the pressure resistance test of the instrument or the valve is required. Because the instrument valves all have certain pressure levels and other working condition ranges, the pressure levels and the time of the pressure resistance test are different. At present, the hydraulic press is generally operated manually, for example, in the process of fixing a meter or a valve or in the process of pressurizing and testing, the steps are complex, and the manual operation and the time are particularly consumed.
In the prior art, the operation steps taken are generally:
1. a sealing gasket and a blind plate are arranged on a flange at one side of the instrument or the valve, and all the fixing screws and nuts are screwed;
2. mounting a sealing gasket and a pressurizing process flange on the other side of the instrument or the valve, and screwing all the fixing screws and nuts;
3. the pressing flange is connected with a hydraulic pressing machine through a high-pressure rubber pipe;
4. manually pressing the piston pump to inject the pressurizing liquid into the instrument or the valve until the pressure rises to a preset pressure;
5. manually observing whether the pressure is reduced or not, or whether liquid leaks;
6. the pressure resistance test time is not leaked, and the pressure resistance test is qualified, otherwise, the pressure resistance test is unqualified;
7. and disassembling all the screws and nuts and carrying out the next process operation.
The whole process needs the operation of personnel on site, and the defects exist:
1. personnel are required to operate or observe in the field, so that potential safety hazards are caused;
2. the fixed flange needs to be repeatedly installed, and the screw and the nut need to be disassembled and screwed, so that time and labor are wasted;
3. if the sealing is not tight due to the fixed flange screw, the screw is disassembled and then is installed and screwed again;
4. the whole process needs the operation of people in the field, and the working efficiency is low.
5. The machine is bulky in structure and inconvenient to disassemble and store, and the existing testing device is mostly a whole and inconvenient to maintain and replace.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model discloses an automatic pressurizing leakage detection device.
The technical scheme adopted by the utility model is as follows:
an automatic pressing leak detection device comprises an electric lifter and an electric pressing machine; the electric lifter comprises a lifter bracket for fixing the electric lifter and a lifting rod capable of moving in the vertical direction; a first flange is fixed at the lower end of the lifting rod; the electric press comprises a liquid storage tank; the first end of the high-pressure rubber tube is connected with the liquid storage tank; the second end of the high-pressure rubber tube is connected with a second flange; the second flange is fixed on the elevator bracket, and the position of the second flange is below the first flange; the space between the second flange and the first flange is a detection position.
The further technical scheme is as follows: the elevator bracket comprises a first supporting rod and a second supporting rod in the vertical direction; a third support rod in the horizontal direction is fixed between the first support rod and the second support rod; a bearing fixed bracket is fixed at the lower end of the third supporting rod; the electric lifter is fixed on the third support rod; the lifting rod passes through the third supporting rod and can move below the third supporting rod; the second flange is fixed above the bearing fixing bracket.
The further technical scheme is as follows: the bearing fixing support comprises a pair of bearing rods with a second gap in the middle; a pair of supporting plates with a third gap in the middle are fixed on the bearing rod; the second flange is fixed on the pair of supporting plates, and the second end of the high-pressure rubber tube passes through a space formed by the second gap and the third gap from the lower part of the bearing fixing support and is connected to the second flange.
The further technical scheme is as follows: the electric elevator also comprises an elevator motor, a hydraulic cylinder and a pressure gauge; a piston rod in the hydraulic cylinder is driven by the elevator motor to move in the vertical direction; the lifting rod is fixed on a piston rod of the hydraulic cylinder.
The further technical scheme is as follows: the liquid storage box is movably and independently arranged relative to the elevator bracket; the first end of the high-pressure rubber tube is connected with the liquid storage tank through the multi-way valve.
The further technical scheme is as follows: the first flange is a blind flange; the second flange is a pressing process flange.
The further technical scheme is as follows: placing a test sample at the detection location; the first end of the test sample is placed in alignment with the first flange, and an upper sealing gasket is arranged between the first end and the first flange; the second end of the detection valve is placed in alignment with the second flange, and a lower seal is disposed between the second end and the second flange.
The further technical scheme is as follows: also comprises a control device; the control device comprises a PLC; the PLC comprises two analog quantity input ends and a plurality of switching value output ends; a hydraulic analog signal is input at a first analog input end; a pressure analog quantity signal is input at a second analog quantity input end; the switching value output end outputs an up-lifting signal and a down-pressing signal for controlling the electric lifter, a pressurizing signal and a pressure-releasing signal for controlling the electric press and an alarm signal.
The further technical scheme is as follows: the switching device is a relay.
The utility model has the following beneficial effects:
1. according to the utility model, the blind flange and the pressurizing process flange are arranged in opposite positions, and the pressurizing process flange is arranged right below the blind flange, and the whole structure can realize full-automatic operation by combining a control device comprising a PLC (programmable logic controller), and all work can be automatically completed by the device except that an instrument or a valve is manually placed at a test position; the manual reverse-reuse screw is not needed for rotationally fixing the blind flange, and the instrument or the valve is not needed to be fixed through other additional fixing devices, so that the operation time of the device is greatly saved.
2. By combining with the PLC, the pressing grade and the pressure resistance test time can be set, and the qualification or the disqualification can be automatically reminded after the test is finished; the test process does not need people on site, other work can be done during the test process, and the next work can be carried out after the prompt is heard, so that the work efficiency is improved.
3. The whole device is reliable in both the fixed structure and the sealing structure, so that the device can be placed in a closed environment, the testing process does not need human intervention on site, even if extreme conditions such as breakage exist, the human is not injured, and the operation process is safer.
4. The elevator supporting frame is simpler in structure and convenient to assemble and disassemble, and due to the structure that the pressing process flange and the blind flange are arranged oppositely, the detection function is guaranteed, meanwhile, the placing space of an instrument or a valve is saved, the whole device is smaller in structure, and due to the fact that the pressing machine and the elevator are independent and detachable, the elevator supporting frame is convenient to carry, assemble and maintain.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the control device of the present invention.
In the figure: 1. an electric hoist; 2. a hydraulic cylinder; 3. compressing the pressure gauge; 4. an elevator motor; 5. an elevator control box; 6. a lifting rod; 7. a blind flange; 8. an upper seal gasket; 9. testing the sample; 10. a lower seal gasket; 11. pressing a process flange; 12. a load bearing fixed support; 13. a motor of the presser; 14. a control box of the press machine; 15. a high-pressure rubber tube; 16. pressing a pressure gauge; 17. a multi-way valve; 18. a liquid storage tank.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention. As shown in fig. 1, the automatic pressurizing leak detection apparatus includes an electric elevator 1 and an electric pressurizing machine. The electric lift 1 includes a lift bracket for fixing the electric lift 1. The elevator support includes a first support bar and a second support bar supported in a vertical direction on a fixed plane and parallel to each other. A third support bar in the horizontal direction is fixed between the first support bar and the second support bar. The third support bar includes a pair of first load-bearing bars having a first gap therebetween. The hydraulic cylinder 2 is erected on the pair of first bearing rods, a lifting rod 6 is fixed on a piston rod of the hydraulic cylinder 2, and the lifting rod 6 penetrates through the first gap and is located below the third supporting rod. The elevator motor 4 is fixed to the upper ends of a pair of first bearing rods. Preferably, a compression pressure gauge 3 is provided on the hydraulic cylinder 2. When the elevator motor 4 works, the piston rod of the hydraulic cylinder 2 can move up and down in the vertical direction and drive the lifting rod 6 to move up and down in the vertical direction. An elevator control box 5 for controlling an elevator motor 4 is fixed to the side of the elevator support. A first flange is fixed at the lower end of the lifting rod 6. The first flange is embodied as a blind flange 7.
A horizontal bearing fixed bracket 12 is also fixed between the first supporting rod and the second supporting rod. The bearing fixed bracket 12 is fixed below the third support rod. The load bearing fixed bracket 12 includes a pair of second load bearing bars with a second gap therebetween. A pair of support plates with a third gap in the middle are fixed on the second bearing rod. A second flange is fixed to the support plate. Specifically, the second flange is a pressing process flange 11.
The electric press includes a reservoir 18. The reservoir 18 is movably independently disposed with respect to the elevator carriage. A multi-way valve 17 is arranged at a hydraulic outlet above the liquid storage tank 18, and a presser motor 13 and a presser control box 14 for controlling the presser motor 13 are fixed above the liquid storage tank 18. Preferably, the reservoir 18 is also fitted with a pressure gauge 16. The first end of the high-pressure rubber tube 15 is connected to the liquid storage tank 18 through the multi-way valve 17, and the second end of the high-pressure rubber tube 15 passes through a space formed by the second gap and the third gap below the bearing fixing support 12 and is connected to the pressurizing process flange 11.
And a detection position is arranged between the blind flange 7 and the pressing process flange 11. The test specimen 9 is placed at the detection position. When placed, a first end of the test specimen 9 is aligned with the blind flange 7 and an upper seal 8 is positioned between the first end and the blind flange 7. The second end of the test specimen 9 is aligned with the process flange 11 and there is a lower seal 10 between the second end and the process flange 11. The test sample 9 may in particular be a meter or a valve. For example, where the test sample 9 is a valve, the valve inlet is the first end and the valve outlet is the second end.
Fig. 2 is a schematic diagram of the control device of the present invention. As shown in fig. 2, the embodiment further comprises a control device. The control device comprises a PLC. The PLC comprises two analog quantity input ends and a plurality of switching value output ends. The first analog input end inputs a hydraulic analog signal of the electric elevator 1 and is used for monitoring the compression pressure, the second analog input end inputs a pressure analog signal of the press and is used for monitoring the test pressure, and the switching value output end respectively outputs an upward lifting signal and a downward pressing signal which are used for controlling the electric elevator 1, a pressurizing signal and a pressure relief signal which are used for controlling the electric press and an alarm signal which are respectively used for performing downward pressing control, upward lifting control, pressurizing control, pressure relief control, music alarm and alarm bell alarm.
The signal output by the switching value output end controls the switching device, and further controls the connection or disconnection of the related circuit. The switching device may in particular be a relay. For example, the PLC can select an output port by controlling an 8-system address number, the relay coil is connected to the output port, when the relay coil is electrified by an output signal, a normally open contact of the relay is closed, namely, the related motor access circuit can be controlled to start and operate, and when the relay coil is electrified by the output signal of the output port, a normally open switch of the relay is opened, namely, the related motor can be controlled to be disconnected from the circuit. And the left-turn and right-turn of the PLC control motor is also a common prior art and is not described again.
The PLC may further include a display interface that displays the hydraulic analog quantity signal, the pressure analog quantity signal, and states of the respective control signals that are output, and may also input a lift pressure set value, an electric press pressure upper limit set value, an electric press pressure lower limit set value, and a press time set value.
In this embodiment, the electric lift 1 controls the lifting rod 6 to move up and down through the lift motor 4 and the hydraulic cylinder 2, and the compression pressure gauge 3 on the hydraulic circuit of the electric lift 1 can output a hydraulic analog signal. The electric elevator 1 can be externally connected with two switching value control signals, namely an up signal and a down signal. Both the output signal and the control signal are connected to the PLC in the control device via the elevator control box 5. The flange blind plate 7 fixed at the lower part of the lifting rod 6 moves up and down along with the lifting rod 6.
The pressing process flange 11 is fixed on a bearing fixing support 12 at the lower part of the electric elevator 1, and the pressing process flange 11 is connected with a liquid storage tank 18 of the electric pressing machine through a high-pressure rubber pipe 15. The electric press realizes pressing and pressure relief through a press motor 13 and a multi-way valve 17. A pressure gauge 16 on the hydraulic circuit of the electric hoist 1 may output a pressure analog signal of the pressure. The electric press can be externally connected with two paths of switching value control signals, namely a pressurizing signal and a pressure relief signal, and the output signal and the control signal are connected with a PLC (programmable logic controller) in the control device through a press control box 14.
The distance between the pressing process flange 11 and the blind flange 7 can be controlled by the elevator control box 5. When the pressing is needed, the lower sealing gasket 10 is firstly placed on the pressing process flange 11, and then the test sample 9 is placed. The test sample 9 may be a meter or a valve and then the upper seal 8 is placed on the test sample 9.
The process of carrying out one-time automatic pressing comprises the following steps:
1. the PLC is operated to start, the PLC outputs a lifting signal of the electric elevator 1, the lifting rod 6 automatically stops after rising to the maximum, and the lower sealing gasket 10, the test sample 9 and the upper sealing gasket 8 are sequentially placed on the lower pressing process flange 11. Then operating the PLC;
2. the PLC cuts off the lifting signal, outputs a pressing signal, tightly presses the test sample 9, detects the pressure signal of the electric elevator 1, and cuts off the pressing signal when the pressure rises to a set value;
3. the PLC outputs a pressurization signal of the electric press, controls the electric press to pressurize, detects a pressure signal of the electric press, and cuts off the pressurization signal when the pressure signal reaches a set upper limit;
4. continuously detecting a pressure signal of the electric pressing machine within a set time, if the pressure value is lower than a set lower limit value, controlling an alarm bell alarm to give out an alarm, and simultaneously controlling the electric pressing machine to release pressure, wherein a display screen displays that the pressing is unqualified;
5. after the set time is reached, if the pressure value is greater than the set lower limit value, the pressure value is qualified, the music alarm is controlled to give out music sound, the electric pressing machine is controlled to release pressure, and the display screen displays that the pressing is qualified;
6. after the pressure relief is finished, the PLC controls the electric lift 1 to lift up, and the test is finished.
The PLC control program according to the present invention is a very simple program, and only involves the determination of the threshold value of the numerical value and the output of the switching value, and can be easily implemented by those skilled in the art based on the basic knowledge in the art in the prior art. The circuit connection structure and the hydraulic circuit related to the utility model, such as a circuit for controlling the relay by the PLC to further control the working state of the motor, the hydraulic circuit of the press machine and the like, are common prior art.
The foregoing description is illustrative of the present invention and is not to be construed as limiting the utility model, which is defined by the scope of the appended claims, as the utility model may be modified in any manner without departing from the essential structure thereof.
Claims (9)
1. The utility model provides an automatic suppress leak hunting device which characterized in that: comprises an electric lifter and an electric presser; the electric lifter comprises a lifter bracket for fixing the electric lifter and a lifting rod capable of moving in the vertical direction; a first flange is fixed at the lower end of the lifting rod; the electric press comprises a liquid storage tank; the first end of the high-pressure rubber tube is connected with the liquid storage tank; the second end of the high-pressure rubber tube is connected with a second flange; the second flange is fixed on the elevator bracket, and the position of the second flange is below the first flange; the space between the second flange and the first flange is a detection position.
2. The automatic pressurizing leak detection device according to claim 1, characterized in that: the elevator bracket comprises a first supporting rod and a second supporting rod in the vertical direction; a third support rod in the horizontal direction is fixed between the first support rod and the second support rod; a bearing fixed bracket is fixed at the lower end of the third supporting rod; the electric lifter is fixed on the third support rod; the lifting rod passes through the third supporting rod and can move below the third supporting rod; the second flange is fixed above the bearing fixing bracket.
3. The automatic pressurizing leak detection device according to claim 2, characterized in that: the bearing fixing support comprises a pair of bearing rods with a second gap in the middle; a pair of supporting plates with a third gap in the middle are fixed on the bearing rod; the second flange is fixed on the pair of supporting plates, and the second end of the high-pressure rubber tube passes through a space formed by the second gap and the third gap from the lower part of the bearing fixing support and is connected to the second flange.
4. The automatic pressurizing leak detection device according to claim 1, characterized in that: the electric elevator also comprises an elevator motor, a hydraulic cylinder and a pressure gauge; a piston rod in the hydraulic cylinder is driven by the elevator motor to move in the vertical direction; the lifting rod is fixed on a piston rod of the hydraulic cylinder.
5. The automatic pressurizing leak detection device according to claim 1, characterized in that: the liquid storage box is movably and independently arranged relative to the elevator bracket; the first end of the high-pressure rubber tube is connected with the liquid storage tank through the multi-way valve.
6. The automatic pressurizing leak detection device according to claim 1, characterized in that: the first flange is a blind flange; the second flange is a pressing process flange.
7. The automatic pressurizing leak detection device according to claim 1, characterized in that: placing a test sample at the detection location; the first end of the test sample is placed in alignment with the first flange, and an upper sealing gasket is arranged between the first end and the first flange; the second end of the detection valve is placed in alignment with the second flange, and a lower seal is disposed between the second end and the second flange.
8. The automatic pressurizing leak detection device according to claim 1, characterized in that: also comprises a control device; the control device comprises a PLC; the PLC comprises two analog quantity input ends and a plurality of switching value output ends; a hydraulic analog signal is input at a first analog input end; a pressure analog quantity signal is input at a second analog quantity input end; the switching value output end outputs an up-lifting signal and a down-pressing signal for controlling the electric lifter, a pressurizing signal and a pressure-releasing signal for controlling the electric press and an alarm signal.
9. The automatic pressurizing leak detection device according to claim 8, characterized in that: the signal output by the switching value output end controls a switching device; the switching device is a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122518639.7U CN216207347U (en) | 2021-10-19 | 2021-10-19 | Automatic suppress leak hunting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122518639.7U CN216207347U (en) | 2021-10-19 | 2021-10-19 | Automatic suppress leak hunting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216207347U true CN216207347U (en) | 2022-04-05 |
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ID=80886300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122518639.7U Active CN216207347U (en) | 2021-10-19 | 2021-10-19 | Automatic suppress leak hunting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216207347U (en) |
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2021
- 2021-10-19 CN CN202122518639.7U patent/CN216207347U/en active Active
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