CN110441050B - Portable safety valve moving and adjusting platform - Google Patents
Portable safety valve moving and adjusting platform Download PDFInfo
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- CN110441050B CN110441050B CN201910766979.6A CN201910766979A CN110441050B CN 110441050 B CN110441050 B CN 110441050B CN 201910766979 A CN201910766979 A CN 201910766979A CN 110441050 B CN110441050 B CN 110441050B
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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Abstract
The invention discloses a portable safety valve moving and adjusting platform, which belongs to the technical field of safety valve adjustment and comprises a box body, wherein the box body comprises a box cover, wheels and a moving handle; the box body is internally provided with an air source device, a safety valve fixing device, an adjusting control platform, a hydraulic pump and matched pipelines; the gas source device is fixed on one side of the bottom of the box body, the safety valve fixing device is fixed on the other side of the bottom of the box body, and the adjusting control platform is placed above the gas source device. The invention has the characteristics of small volume, high integration level, easy carrying, simple operation, no need of disassembling and carrying internal equipment and the like, can be quickly adjusted and calibrated on site after the safety valve is disassembled, and reduces the labor intensity.
Description
Technical Field
The invention relates to the technical field of pipeline safety, in particular to the technical field of safety valve adjustment and calibration, and particularly relates to a portable movable adjustment and calibration platform for a safety valve.
Background
The opening and closing piece of relief valve is in normally closed state under the exogenic action, generally installs protection system safety on closed system's equipment or pipeline, when equipment or pipeline internal pressure surpassed the relief valve settlement pressure, opens the pressure release automatically, guarantees that equipment and pipeline internal medium pressure are under the settlement pressure, and protection equipment and pipeline normally work prevents to meet accident, reduces the loss. Safety valves are widely used: steam boiler, liquefied petroleum gas vehicle tank car or liquefied petroleum gas railway tank car, oil (gas) production well, high-pressure bypass of steam power generation equipment, pressure pipeline and pressure container.
In the operation process of the safety valve, under the action of physical and chemical factors such as operating pressure, temperature, medium corrosion and the like, the setting pressure and the sealing performance of the safety valve are changed, so that the safety valve cannot be opened according to specified pressure or seriously leaks, and the safety production is influenced. In order to ensure the safety of industrial production and strengthen the safety supervision and management of pressure equipment or pipeline safety valves, fixed pressure vessel safety technical supervision regulations (TSG21-2016) and safety valve safety technical supervision regulations (TSG ZF001-2006) clearly stipulate the regular inspection time of safety valves, which should be inspected at least once every year. The safety valve regular check specified by the national standard and regulation has two modes of off-line and on-line, and the off-line check mode is mostly adopted at present. The conventional off-line adjustment and calibration method has the defects that after the safety valve is disassembled, the normal operation of the protected equipment or the pipeline is influenced, and meanwhile, the performance of the detected qualified safety valve is possibly changed in the transportation process. Therefore, the portable safety valve adjusting device has become a common device for adjusting a plurality of safety valves, for example, chinese patent publication No. CN207423511U, a portable safety valve calibrator, most of which transports related devices with a box, takes out and places the devices after arriving at a site, connects the devices with a line, and starts a test.
Disclosure of Invention
Aiming at the problems, the invention designs a portable safety valve movable adjusting platform which has the characteristics of small volume, high integration level, easiness in carrying, simplicity in operation, no need of disassembling and carrying internal equipment and the like, can be quickly adjusted on site after the safety valve is disassembled, reduces the labor intensity, and improves the service life of equipment and the safety coefficient of an experiment.
The technical scheme of the invention is as follows:
a portable safety valve moving and adjusting platform comprises a box body;
the box body comprises a box cover, wheels and a movable handle;
the box body is internally provided with an air source device, a safety valve fixing device, an adjusting control platform, a hydraulic pump and matched pipelines;
the gas source device in the box body is fixed on one side of the bottom of the box body, the safety valve fixing device is fixed on the other side of the bottom of the box body, the adjusting control platform is placed above the gas source device and supported by a control platform support arranged on the lower portion of the adjusting control platform, and the control platform support is fixed on the bottom and the side face of the box body.
And two small doors, namely a door I and a door II, are arranged on the vertical surface of the box body, and the door I and the door II are just opposite to an air source device and a safety valve fixing device in the box body.
The gas source device comprises a gas source bracket, a gas cylinder and a sliding rail bracket;
the air source support is of a cuboid frame structure and comprises four long rods with equal length and two rectangular frames with the same size, and the frame of the air source support at one end in the length direction is of a detachable structure and is fixed on the four long rods;
the gas cylinder is a nitrogen cylinder and is placed in the gas source bracket to realize fixation;
the sliding rail support is arranged at the bottom of the box body, a sliding groove is formed above the sliding rail support, sliding strips are arranged below the two long rods at the bottom of the air source support, and the sliding strips are clamped into the sliding groove and are in clearance fit with the sliding groove;
the direction of the gas outlet of the gas cylinder faces to the first door, and the width of the gas cylinder and the gas source support is smaller than that of the first door.
Further, door one is equipped with the air supply dog on its inside upper portion, including dog pivot, dog body, the dog body is L type structure, and the dog pivot is fixed at the box inner wall of a top, and the lowest of dog body lower extreme is higher than air supply support top, is less than the gas cylinder top, and dog body lower extreme is inclined plane or arcwall face towards the gas cylinder side to be equipped with one deck buffering cushion on inclined plane or arcwall face.
Furthermore, the safety valve fixing device is a three-tooth fixing device, the three-tooth fixing device comprises a base, a three-tooth sliding groove, fixing teeth, an air pressure port, a hydraulic port and a fixing port, and the fixing port is arranged in the center of the top of the three-tooth fixing device; a fixed barometer is also arranged on the base;
the air pressure port, the hydraulic port and the fixed air pressure gauge face the second door, and the farthest width between the air pressure port and the hydraulic port is smaller than the width of the second door;
the hydraulic pump is vertically placed beside the three-tooth fixing device.
Furthermore, a multifunctional supporting handle is arranged on the outer side of the vertical surface of the box body on the opposite side of the first door and the second door, and comprises a handle body, a damping hinge and a movable winding rod;
the handle body is horizontally fixed on the box body and provided with a vertical gap, and the section of the outer side of the handle body separated by the gap is in a narrow hexagon shape;
damping hinges are arranged at two ends of the handle body and are connected with movable winding rods through the damping hinges;
the upper side and the lower side of the tail end of the movable winding rod are provided with convex edges which are in semicircular structures;
the upper side and the lower side of the movable winding rod are provided with limiting steel ropes, one end of each limiting steel rope is connected to the side, close to the handle body, of the movable winding rod, and the other end of each limiting steel rope is connected to the box body.
Further, the case lid is the plate structure, through hinge connection at box upper portion opening side, the case lid top is equipped with a hinge to there is the backup pad through supporting hinge connection, one side cross section of backup pad is the trapezium structure, and its four sides keep paralleling with the four sides of case lid, under the case lid turned over and keep the horizontally state, the one end card that the support hinge was kept away from to the backup pad is gone into the vertical gap realization of handle body and is fixed, the case lid is lived to the slant support, and keep two hypotenuses of its trapezium cross section to keep laminating with case lid and box respectively.
Further, the wheel is the universal wheel, and the wheel still is equipped with supporting wheel pad, the wheel pad includes wheel pad vertical section and wheel pad horizontal segment, and affiliated wheel pad horizontal segment is rugby ball-type sheetmetal, wheel pad vertical section is the stereoplasm rubber of half bowl type structure, its bottom and wheel pad horizontal segment fixed connection. There are 4 wheel cushions altogether, and when using, 4 wheel cushions are fixed 4 wheels respectively, ensure that it can not remove.
Further, still be equipped with the wheel pad box in the box, the wheel pad box is used for placing the wheel pad, the wheel pad box is the cuboid barrel, and the lid is not established at the top, and the distance of top and case lid is narrower, and its bottom is equipped with two perpendicular limits and regards as the box holder, width between the box holder with tridentate spout width is the same.
Furthermore, an instrument box is also arranged in the box body, and instruments matched with the adjusting control platform, the gas cylinder and the hydraulic pump are placed in the instrument box;
the instrument box is of an open structure, and a soft cushion is arranged in the instrument box;
the bottom of the instrument box is provided with a layer of adhesive silica gel pad, and when the instrument box is placed in the box body, the instrument box is placed above the three-tooth fixing device and is relatively fixed through adhesion.
The invention has the beneficial effects that:
1. the side surface of the box body is modified, so that the internal devices do not need to be moved out, pipeline connection and test are realized under the condition of keeping the original position, the adjustment can be quickly and efficiently carried out, the pipelines can be quickly stored after the adjustment and disassembly, the adjustment and the adjustment of the safety valves can be quickly and efficiently completed, and the time is shortened to about 20 minutes for the adjustment and the adjustment of each flange and each thread safety valve;
2. the sliding rail is erected on the air source device and can slide, so that the air source device can slide back and forth on the sliding rail bracket, the air bottle can be taken out after being used up and replaced, and the air bottle connector can be moved to the outer side of the box body in the using process, so that the pipeline connection is facilitated, the bending degree of the pipeline is reduced, and the safety of the experiment is improved;
3. a matched gas source stop block is arranged near the gas source device, so that the gas source can only move within a certain range when not needing to be taken out, and the stability of the gas cylinder in the experimental process is ensured;
4. the box cover and the box body are provided with structures which can enable the box cover to form a platform, so that the space for placing articles in the adjusting process is increased, and pipelines can be wound on the outer side of the box body, so that partial pipelines can be conveniently stored in the carrying process;
5. a plurality of box bodies are arranged in the vacant space in the box body and used for placing and containing relevant experimental devices such as instruments, wheel pads and the like, and extra occupied space is not needed;
6. the special structure of the three-tooth fixing device is utilized to effectively utilize the lateral space of the three-tooth fixing device and place a hydraulic pump; and the gravity of the three-tooth fixing device is utilized to maintain the stability of the whole box body.
7. The wheels at the bottom of the box body are provided with wheel pads for controlling the box body to move, so that the box body can be adjusted to keep a static state in the simplest method, the box body is prevented from moving due to the fact that an internal device is subjected to pressure and impulsive force in an experiment, and the stability and safety of the experiment are ensured.
Drawings
FIG. 1 is a front view of an external structure according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic structural view of the opened box cover, the first door and the second door of FIG. 1;
FIG. 4 is a schematic view of the structure of FIG. 2 showing the cover opened and supported;
FIG. 5 is a schematic view of the structure of FIG. 2 with the lid opened and the lid lowered;
FIG. 6 is a rear view of FIG. 1;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic view of the internal structure of FIG. 1;
FIG. 9 is a schematic view of the pipeline of FIG. 8 after installation and connection;
FIG. 10 is a top view of FIG. 9;
FIG. 11 is a schematic view of the internal structure of FIG. 4;
FIG. 12 is a schematic view of the operating state of FIG. 11;
FIG. 13 is a detailed view of area A of FIG. 12;
FIG. 14 is a schematic view of the construction of the wheel pad;
FIG. 15 is a schematic view of the construction of the wheel chock box;
FIGS. 16a and 16b are different angle views of a threaded adapter;
FIGS. 17a and 17b are different angle views of a flange adapter;
FIG. 18 is a schematic view of a three-tooth fixture;
fig. 19 is a cross-sectional view of the locking device.
In the figure:
1 a box body,
101 moving handle, 102 universal wheel, 103 door I, 104 door II,
2 a box cover,
201 supporting plates and 202 supporting hinges,
3 an air source device,
301 air source support, 302 air bottle, 303 sliding rail support, 304 sliding bar, 305 air source stop block,
3051 a block body, a 3052 buffer rubber pad, a 3053 block rotating shaft,
4 a three-tooth fixing device,
401 fixed air pressure gauge, 402 air pressure port, 403 hydraulic port, 404 three-tooth chute, 405 fixed tooth, 406 lifting device, 407 fixed port,
4051 locking device, 4052 locking bolt
5 a hydraulic pump,
6 an adjusting control platform,
601 a pressure gauge, 602 a control platform bracket,
7 instrument case,
8 wheel pad boxes,
801 box frame,
9 a multifunctional supporting handle,
901 a handle body, 902 a damping hinge, 903 a movable winding rod,
9031 bead, 9032 limit steel rope,
10 wheel pads,
1001 wheel pad vertical section, 1002 wheel pad horizontal section,
11 steel wire flexible pipe,
12 a thread adapter,
13 flange adapter.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example (b):
as shown in fig. 1-15, a portable safety valve movement adjusting platform comprises a box body 1, wherein a box cover 2 is arranged at the upper part of the box body 1, 4 universal wheels 102 are arranged at the lower part of the box body, and a movable handle 101 which can be turned upwards is arranged on the side surface of the box body 1;
as shown in fig. 8-10, an air source device 3, a safety valve fixing device, a hydraulic pump 5 and an adjusting control platform 6 are installed at the bottom of the box body 1; the gas source device 3 in the box body 1 is fixed on one side of the bottom of the box body 1, the safety valve fixing device is fixed on the other side of the bottom of the box body 1, the adjusting control platform 6 is placed above the gas source device 3 and supported by a control platform support 602 arranged on the lower portion of the adjusting control platform, the control platform support 602 is of an inverted L-shaped structure and is fixed on the bottom and the side face of the box body 1, the gas source device 3 can be placed in a space left below the adjusting control platform support 602, and the control platform support 602 is of an undetachable structure. The box body 1 is also provided with a plurality of matched pipelines, in particular to a steel wire hose 11.
As shown in fig. 1 and 3, two small doors, namely a door one 103 and a door two 104, are arranged on the vertical surface of the box body 1, the door one 103 and the door two 104 are opposite to the air source device 3 and the safety valve fixing device inside the box body 1, the door one 103 and the door two 104 are both of a structure which is opened downwards to the outside, and the top of the door one 103 and the door two 104 are provided with fixing devices, such as bolts, snap fasteners and the like, so that the door one 103 and the door two 104 are fixedly connected with the outside of the.
As shown in fig. 3, 4, 5, 9 and 11, the gas source device 3 includes a gas source bracket 301, a gas cylinder 302 and a slide rail bracket 303; the gas source support 301 is of a cuboid frame structure and comprises four long rods with equal length and two rectangular frames with the same size, the frame at one end of the gas source support 301 in the length direction is of a detachable structure and is fixed on the four long rods in a fixing mode comprising bolt fixing, pin fixing, clamp fixing and the like, when the gas cylinder 302 needs to be taken out, the gas source support 301 is taken out of the box body 1, then the frame is taken down, and then the gas cylinder 302 is taken out; the gas cylinder 302 is a nitrogen cylinder 302 and is placed in the gas source bracket 301 to realize fixation; the sliding rail support 303 is arranged at the bottom of the box body 1, a sliding groove is formed above the sliding rail support 303, a sliding strip 304 is arranged below the two long rods at the bottom of the air source support 301, the sliding strip 304 is of a trapezoidal structure and is the same as the sliding groove in shape, the sliding strip 304 is clamped in the sliding groove and is in clearance fit with the sliding groove, and a layer of lubricating oil can be coated in the sliding groove in order to move the air bottle 302 conveniently; the gas outlet of the gas cylinder 302 faces to the first door 103, and the width of the gas cylinder 302 and the gas source bracket 301 is smaller than that of the first door 103; the first door 103 is provided with an air source stop block 305 on the upper portion of the inner side thereof, and comprises a stop block rotating shaft 3053 and a stop block body 3051, wherein the stop block body 3051 is of an L-shaped structure, the stop block rotating shaft 3053 is fixed on the inner wall of the box body 1 above the first door 103, the lowest part of the lower end of the stop block body 3051 is higher than the top of the air source support 301 and lower than the top of the air cylinder 302, the lower end of the stop block body 3051 is inclined plane or arc-shaped surface towards the side of the air cylinder 302, and a layer of buffer rubber cushion. When the dog is local for vertical decurrent state, gas cylinder 302 can contact with buffering cushion 3052 under the circumstances of outside removal, ensures that gas cylinder 302 can not shift out box 1, when needs wholly remove gas cylinder 302, upwards rotates dog body 3051, takes out air supply support 301. If desired, more than one gas source block 305 may be provided, and if more than one gas source block is provided, the staggered spacing between the two blocks is greater than the length of the block body 3051 to avoid interfering with rotation.
As shown in fig. 8-10, the safety valve fixing device is a three-tooth fixing device 4, the three-tooth fixing device 4 comprises a base, a three-tooth chute 404, a fixed tooth 405, a pneumatic port 402, a hydraulic port 403 and a fixed port 407, and the fixed port 407 is arranged at the center fixed port 407 at the top of the three-tooth fixing device 4 and is connected to the pneumatic port 402 through a pipeline; the three-tooth fixing device 4 is also provided with a lifting device 406, and the lifting device 406 moves up and down through a pipeline controller connected with the hydraulic port 403; a fixed barometer 401 is also arranged on the base; the air pressure port 402, the hydraulic port 403 and the fixed air pressure gauge 401 face the second door 104 (not facing, but inclined to some extent, but do not prevent the inward connection of the external pipeline), and the farthest width between the two ports is smaller than the width of the second door 104, and the base of the three-tooth fixing device 4 is of a triangular structure, and one straight edge of the base is close to the edge of the control platform support 602 and is parallel to the edge. The three-tooth fixing device 4 is further provided with a flange adapter 13 and a threaded adapter 12 which are matched with each other and can be fixedly connected with the fixing port 407. The hydraulic pump 5 is vertically placed beside the three-tooth fixing device 4.
As shown in fig. 6, the box body 1 is provided with a multifunctional supporting handle 9 at the outer side of the vertical surfaces of the first door 103 and the second door 104, and the multifunctional supporting handle 9 comprises a handle body 901, a damping hinge 902 and a movable winding rod 903; the handle body 901 is horizontally fixed on the box body 1, the handle body 901 is provided with a vertical gap, and the section of the outer side of the handle body 901 separated by the gap is a narrow hexagon; damping hinges 902 are arranged at two ends of the handle body 901, and movable winding rods 903 are connected through the damping hinges 902; the upper side and the lower side of the tail end of the movable winding rod 903 are provided with ribs 9031, and the ribs 9031 are of semicircular structures; the upper and lower both sides of activity wire winding pole 903 are equipped with spacing steel cable 9032, spacing steel cable 9032 one end is connected and is close to handle body 901 side at activity wire winding pole 903, and the other end is connected on box 1, and spacing steel cable 9032 can ensure that activity wire winding pole 903 can not remove too far away, and when needs twine the pipeline, open activity wire winding pole 903, twine the pipeline at its both ends, and the pipeline twines the back, avoids the roll-off through bead 9031, reduces the possibility that removes the in-process and drop.
As shown in fig. 4, case lid 2 is a flat plate structure, and is connected at the upper opening side of case body 1 through hinges, and case lid 2 top is equipped with a hinge, and is connected with backup pad 201 through supporting hinge 202, and one side cross section of backup pad 201 is trapezium structure, and its four sides keep parallel with the four sides of case lid 2, under case lid 2 turned over and kept the horizontally state, the one end card that backup pad 201 kept away from supporting hinge 202 is gone into the vertical gap realization of handle body 901 and is fixed, and case lid 2 is lived to the slant support, and keeps two hypotenuses of its trapezium cross section to keep laminating with case lid 2 and case body 1 respectively. A data acquisition device, such as a laptop, may be placed on the case lid 2 for acquiring data in real time and setting the relevant parameters. When the box cover 2 is not needed to be used as a desktop, the box plate can be directly put down as shown in fig. 5.
As shown in fig. 14, the wheel is further provided with a matched wheel pad, the wheel pad comprises a wheel pad vertical section 1001 and a wheel pad horizontal section 1002, the wheel pad horizontal section 1002 is a rugby-ball metal sheet, the wheel pad vertical section 1001 is hard rubber with a half-bowl structure, and the bottom of the wheel pad vertical section is fixedly connected with the wheel pad horizontal section 1002. Still be equipped with wheel pad box 8 in the box 1, wheel pad box 8 is used for placing the wheel pad, wheel pad box 8 is the cuboid barrel, and the lid is not established at the top, and the distance of top and case lid 2 is narrower, directly puts into the wheel pad, and the wheel pad can not pop out from the top in the transportation, and its bottom is equipped with two perpendicular limits as box holder 801, width between the box holder 801 with tridentate spout 404 width is the same, with box holder 801 card in the transportation in the tridentate spout 404 outside, realizes fixedly.
As shown in fig. 8, an instrument box 7 is further disposed in the box body 1, and instruments for matching, adjusting and controlling the platform 6, the gas cylinder 302 and the hydraulic pump 5 are disposed in the instrument box 7; the instrument box 7 is of an open structure, and a soft cushion is arranged in the instrument box; instrument box 7, its bottom is equipped with one deck viscous silica gel pad, and viscous silica gel pad has certain viscidity on metal surface, places tridentate fixing device 4 top in the transportation, through viscous silica gel pad from the adhesion in area and the 4 surface adhesions of glossy tridentate fixing device, realizes relatively fixed, can take it down with power slightly when taking off.
The using method of the invention is as follows:
the experimental principle is as follows: the off-line check of the safety valve is to slowly introduce high-pressure gas (such as nitrogen) into an inner cavity of the safety valve to be checked, the safety valve is automatically opened when the medium pressure rises to the set pressure of the safety valve, the highest pressure value of the pressure gauge 601 is the opening pressure in the process, the safety valve is adjusted to enable the opening pressure to reach the specified opening value, the check of the set pressure is completed, then the pressure is reduced to 90 percent of the specified value through an adjusting valve (a tightness test), the existence of medium leakage is checked by observing the pressure gauge 601 or other legal methods, and whether the tightness of the safety valve is qualified is determined.
The experimental steps are as follows: the pipeline connection of the present invention is specifically, the gas cylinder 302 is connected to the debugging control platform through a pipeline, the debugging control platform 6 is connected to the gas pressure port 402 on the three-tooth fixing device 4 through a pipeline, the hydraulic port 403 of the three-tooth fixing device 4 is connected to the hydraulic pump 5, the hydraulic pump 5 is connected to the outside through a pipeline, when the flange and the thread safety valve are offline debugged, after the flange and the thread safety valve are detached from the equipment or the pipeline, the flange adapter 13 and the thread adapter 12 which are matched with the flange and the thread safety valve are selected according to the size of the flange safety valve to be debugged and the thread of the thread safety valve (the thread adapter shown in fig. 16a and 16b is only an indication of a specific structure, actually, more kinds of structures can be provided), and after the adapter is connected, the safety valve is connected to the three-tooth. And opening the cock valve at the outlet of the gas cylinder 302, and adjusting the inlet pressure of the pressure regulating valve according to the adjustment value of the safety valve. After the pressure of the gas cylinder 302 is balanced (higher than the adjustment value of the safety valve to be adjusted), the cock valve at the outlet of the gas cylinder 302 is slowly adjusted, and when the pressure rises to 90% of the take-off pressure value of the safety valve, the pressure-rising speed is 0.01 MPa/s. After the safety valve jumps, the highest reading of the digital pressure gauge 601 can be memorized as the jump pressure of the safety valve.
The safety valve adjusting method comprises the following steps:
after the pipeline of the invention is connected, the outlet of the nitrogen cylinder 302 can be connected with a pressure regulating valve (not shown in the figure), the pressure regulating valve can be regulated between 0 and 40MPa, the rear end of the pressure regulating valve adopts a high-pressure steel wire hose 11 (the pressure bearing grade is not lower than 40MPa) to be connected with a KZE high-pressure hydraulic open-close type oil pipe quick connector G1-1/4 connector in the adjusting control platform 6 to realize the field quick installation, and the connecting pipeline adopts the steel wire hose 11. The lower end of the adjusting control platform 6 is provided with a gas cylinder 302 for providing a stable gas source and avoiding the frequency jump and the flutter of the safety valve caused by exciting pressure generated during adjusting. The pressure of the gas cylinder 302 is displayed on the teaching control platform through a matched pressure gauge 601. A control cock valve is arranged at the outlet of the gas cylinder 302 to control the outlet pressure, two high-precision digital pressure gauges 601 (YS-105 memory digital pressure gauge 601 is adopted and is suitable for measuring various pressures and keeping the highest value, the precision grade is 0.25%) are arranged on a pipeline at the outlet end of the control cock valve in parallel, the two pressure gauges 601 are simultaneously arranged on the adjusting control platform 6 to observe the adjusting pressure, and the pressure gauge 601 displays the highest value of the pressure, namely the setting pressure. A safety valve adjusting platform is installed on the right side of the adjusting control platform 6, and a steel wire hose 11 is adopted in a connecting pipeline, so that pressure is transmitted in real time, and exciting pressure is reduced.
Aiming at the thread safety valve: the fixing port 407 of the three-tooth fixing device 4 is provided with an internal thread M20 × 1.5 for connecting a thread safety valve adjusting adapter. The conversion joint adopts an external thread with one end M20 x 1.5, and the other end is provided with a corresponding thread conversion joint 12 according to the thread size of a field conventional thread safety valve (the thread conversion joint 12 shown in figures 16a and 16b is only a schematic diagram of a specific structure, and actually more types of thread conversion joints 12 can be provided), and the joint size is from NPT3/8 to M50 x 1.5 common types. During the screw thread safety valve is adjusted and calibrated, the screw thread safety valve is disassembled from the equipment, and the disassembled safety valve is installed on the adapter matched with the screw thread of the safety valve on the adjusting platform, so that the adjustment is convenient and fast.
For flange joint relief valve: an O-shaped ring groove is processed on the three-tooth fixing device 4, a flange adapter 13 matched with a flange plate of a flange safety valve to be calibrated is selected (the flange adapter 13 shown in fig. 17a and 17b is only a schematic diagram of a specific structure, and actually, more types of flange adapters can be provided), the flange adapter is installed on a fixing port 407, the safety valve is installed on a flange adapter, the flange safety valve is fixed by the three-tooth fixing device 4, specifically, the fixed teeth 405 are pushed inwards, the lifting device 406 is lifted, the safety valve can be pressed by the transverse section of the fixed teeth 405, and the fixed teeth 405 are stopped moving in a sliding groove by the locking device 4051, so that the flange safety valve can be calibrated.
Meanwhile, the device can directly adjust the pilot operated safety valve, a pipeline connected with the air pressure port by the movable checking platform is detached from the air pressure port, the thread of the pipeline is directly connected with the thread of the pilot operated safety valve inlet, and the pilot operated safety valve can be adjusted.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A portable safety valve moving and adjusting platform comprises a box body;
the box body comprises a box cover, wheels and a movable handle;
the box body is internally provided with an air source device, a safety valve fixing device, an adjusting control platform, a hydraulic pump and matched pipelines;
the safety valve adjusting device is characterized in that the air source device in the box body is fixed on one side of the bottom of the box body, the safety valve fixing device is fixed on the other side of the bottom of the box body, the adjusting control platform is placed above the air source device and supported by a control platform bracket arranged on the lower portion of the adjusting control platform, and the control platform bracket is fixed on the bottom and the side face of the box body;
two small doors, namely a door I and a door II are arranged on the vertical surface of the box body, and the door I and the door II are just opposite to an air source device and a safety valve fixing device in the box body;
the gas source device comprises a gas source bracket, a gas cylinder and a sliding rail bracket;
the air source support is of a cuboid frame structure and comprises four long rods with equal length and two rectangular frames with the same size, and the frame of the air source support at one end in the length direction is of a detachable structure and is fixed on the four long rods;
the gas cylinder is a nitrogen cylinder and is placed in the gas source bracket to realize fixation;
the sliding rail support is arranged at the bottom of the box body, a sliding groove is formed above the sliding rail support, sliding strips are arranged below the two long rods at the bottom of the air source support, and the sliding strips are clamped into the sliding groove and are in clearance fit with the sliding groove;
the direction of the gas outlet of the gas cylinder faces to the first door, and the width of the gas cylinder and the gas source bracket is smaller than that of the first door;
the gas source check block is arranged on the upper portion of the inner side of the first door and comprises a check block rotating shaft and a check block body, the check block body is of an L-shaped structure, the check block rotating shaft is fixed on the inner wall of the box body above the first door, the lowest position of the lower end of the check block body is higher than the top of the gas source support and lower than the top of the gas cylinder, the lower end of the check block body is inclined or arc-shaped towards the side of the gas cylinder, and a layer of buffering rubber pad is arranged on the inclined.
2. The portable safety valve moving and adjusting platform as claimed in claim 1, wherein the safety valve fixing device is a three-tooth fixing device, the three-tooth fixing device comprises a base, a three-tooth chute, a fixed tooth, a pneumatic port and a hydraulic port fixing port, and the fixing port is arranged at the top center of the three-tooth fixing device; a fixed barometer is also arranged on the base;
the air pressure port, the hydraulic port and the fixed air pressure meter face the second door, and the farthest width between the air pressure port and the hydraulic port is smaller than the width of the second door.
3. The portable safety valve movement adjusting platform as claimed in claim 2, wherein the box body is provided with a multifunctional support handle outside vertical surfaces on opposite sides of the first door and the second door, and the multifunctional support handle comprises a handle body, a damping hinge and a movable winding rod;
the handle body is horizontally fixed on the box body and provided with a vertical gap, and the section of the outer side of the handle body separated by the gap is in a narrow hexagon shape;
damping hinges are arranged at two ends of the handle body and are connected with movable winding rods through the damping hinges;
the upper side and the lower side of the tail end of the movable winding rod are provided with convex edges which are in semicircular structures;
the upper side and the lower side of the movable winding rod are provided with limiting steel ropes, one end of each limiting steel rope is connected to the side, close to the handle body, of the movable winding rod, and the other end of each limiting steel rope is connected to the box body.
4. The portable safety valve movement adjusting platform according to claim 3, wherein the case cover is of a flat plate structure and is connected to the side of the upper opening of the case body through hinges, a supporting hinge is arranged at the top of the case cover, a supporting plate is connected through the supporting hinge, the cross section of one side of the supporting plate is of a trapezoid structure, four sides of the supporting plate are parallel to four sides of the case cover, one end, away from the supporting hinge, of the supporting plate is clamped into a vertical gap of the handle body to be fixed in a state that the case cover is turned over and kept horizontal, the case cover is obliquely supported, and two oblique sides of the trapezoid cross section of the supporting plate are kept attached to the case cover and the.
5. The portable safety valve movement adjusting platform according to claim 4, wherein the wheels are universal wheels, the wheels are further provided with matched wheel cushions, the wheel cushions comprise wheel cushion vertical sections and wheel cushion transverse sections, the wheel cushion transverse sections are olive-ball-shaped metal sheets, the wheel cushion vertical sections are hard rubber with a half-bowl-shaped structure, and the bottoms of the wheel cushion vertical sections are fixedly connected with the wheel cushion transverse sections.
6. The portable safety valve movement adjusting platform according to claim 5, wherein a wheel pad box is further arranged in the box body and used for placing wheel pads, the wheel pad box is a rectangular barrel, a cover is not arranged at the top of the wheel pad box, two vertical edges are arranged at the bottom of the wheel pad box and used as box frames, and the width between the box frames is the same as the width of the three-tooth sliding chute.
7. The portable safety valve moving and adjusting platform according to claim 6, wherein an instrument box is further arranged in the box body, and instruments matched with the adjusting control platform, the gas cylinder and the hydraulic pump are placed in the instrument box;
the instrument box is of an open structure, and a soft cushion is arranged in the instrument box;
the bottom of the instrument box is provided with a layer of adhesive silica gel pad, and when the instrument box is placed in the box body, the instrument box is placed above the three-tooth fixing device and is relatively fixed through adhesion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910766979.6A CN110441050B (en) | 2019-08-20 | 2019-08-20 | Portable safety valve moving and adjusting platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910766979.6A CN110441050B (en) | 2019-08-20 | 2019-08-20 | Portable safety valve moving and adjusting platform |
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| CN110441050A CN110441050A (en) | 2019-11-12 |
| CN110441050B true CN110441050B (en) | 2020-10-30 |
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| CN113008546B (en) * | 2021-03-02 | 2022-05-17 | 上海化学工业检验检测有限公司 | Portable safety valve calibration equipment and calibration method |
| CN116499734B (en) * | 2023-06-25 | 2023-09-26 | 安泰源特种设备检测集团有限公司 | Elevator safety valve verification platform and verification method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2789749Y (en) * | 2005-01-28 | 2006-06-21 | 王元清 | Safety valve regulating and testing device |
| CN204228385U (en) * | 2014-09-28 | 2015-03-25 | 中广核核电运营有限公司 | A kind of off-line testing device for demarcating safety valve setting value and off-line testing system |
| CN205192740U (en) * | 2015-11-23 | 2016-04-27 | 李治涛 | Safety valve detector |
| CN206539882U (en) * | 2017-02-27 | 2017-10-03 | 中国人民解放军海军航空工程学院青岛校区 | A kind of portable warship air source box |
| CN206876362U (en) * | 2017-05-09 | 2018-01-12 | 常德翔宇设备制造有限公司 | A kind of portable sealed chamber of punching engine |
| CN207423511U (en) * | 2017-10-26 | 2018-05-29 | 苏州维赛克阀门检测技术有限公司 | A kind of Portable safety valve checking instrument |
| CN208366558U (en) * | 2017-12-26 | 2019-01-11 | 上海科峰机电机械有限公司 | A kind of the pressure display screen and safety valve testing equipment control cabinet of safety valve testing equipment control cabinet |
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