CN212158968U - Automatic control device for medical gas terminal leakage detection - Google Patents
Automatic control device for medical gas terminal leakage detection Download PDFInfo
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- CN212158968U CN212158968U CN202021145682.2U CN202021145682U CN212158968U CN 212158968 U CN212158968 U CN 212158968U CN 202021145682 U CN202021145682 U CN 202021145682U CN 212158968 U CN212158968 U CN 212158968U
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Abstract
The utility model discloses an automatic control device for detecting leakage of a medical gas terminal, which comprises a workbench, wherein an airtight instrument mounting cabinet and a leakage detection part are arranged on the workbench surface, a bottom plate is arranged on the lower part of the workbench, and a balance tank and an automatic control system with a built-in PLC control system are arranged on the bottom plate and used for controlling the linkage of the automatic control device; the air tightness instrument mounting cabinet is provided with an air tightness instrument, a PLC control system is arranged in the air tightness instrument and used for controlling the detection stroke, the front side of the air tightness instrument is provided with an operation interface, and the back side of the air tightness instrument is provided with an air inlet, an air outlet and a test volume interface; the front surface of the air tightness instrument mounting cabinet is provided with a starting button, a qualified indicator light, an audible and visual alarm and a gas pressure gauge; be provided with air inlet and gas vent on the balance tank, the gas vent is connected with the air inlet of airtight appearance, and the test volume interface and the gas terminal intercommunication of airtight appearance, gas terminal can dismantle the connection on the leak detection portion. The device can realize automatic and quantitative medical gas terminal leakage detection.
Description
Technical Field
The utility model belongs to the technical field of the leak testing equipment, especially, relate to a medical gas terminal leak testing automatic control device.
Background
The medical gas terminal is an important part of the end supply device of the life support system, is connected with medical equipment such as an oxygen humidification bottle, a suction bottle, a breathing machine and the like through an insertion piece, and is used for treating diseases. YY0801.1-2010 part 1 of medical gas pipework system terminal: termination for compressed medical gas and vacuum "stipulates that the leakage of the medical gas termination should not exceed 0.296mL/min, regardless of the insertion of an insert. If the medical gas terminal leaks, gas waste can be caused, certain economic loss is brought to hospitals, and meanwhile, system under-pressure can be caused, and treatment is delayed.
The leakage detection of the existing medical gas terminal mainly depends on manual connection of the terminal and a pipeline, the valve is opened to supply gas to the gas terminal by adjusting the pressure reducing valve to the detection pressure, and then the gas terminal is placed in water to observe whether bubbles are generated or the frequency and the size of the generated bubbles exist. Although the existing detection method can intuitively detect whether the reaction gas terminal has leakage and a leakage part, the leakage rate of the reaction gas cannot be accurately quantified, and the terminal soaked in water has certain corrosivity due to incomplete moisture purging.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the automatic control device for the medical gas terminal leakage detection can realize automatic and quantitative medical gas terminal leakage detection, is convenient to detect, does not need to put the medical gas terminal into water for observation, and cannot cause certain corrosion of the medical gas terminal due to incomplete moisture purging.
The utility model adopts the technical scheme as follows:
an automatic control device for medical gas terminal leakage detection comprises a workbench, wherein an air tightness instrument installation cabinet and a leakage detection part are arranged on the workbench surface, a bottom plate is arranged on the lower portion of the workbench, a balance tank is arranged on the bottom plate, an automatic control system is arranged on the bottom plate of the workbench, and a PLC control system is arranged in the automatic control system and used for controlling linkage of the automatic control device for medical gas terminal leakage detection; the air tightness instrument mounting cabinet is provided with an air tightness instrument, a PLC control system is arranged in the air tightness instrument and used for controlling the detection stroke, the front side of the air tightness instrument is provided with an operation interface, and the back side of the air tightness instrument is provided with an air inlet, an air outlet and a test volume interface; the front surface of the air tightness instrument mounting cabinet is provided with a starting button, a qualified indicator light, an audible and visual alarm and a gas pressure gauge; be provided with balance tank air inlet and balance tank gas vent on the balance tank, the balance tank gas vent is connected with the air inlet of airtight appearance, the test volume interface and the gas terminal intercommunication of airtight appearance, the connection can be dismantled on the leak testing portion at gas terminal.
Preferably, the leakage detection part comprises a cylinder mounting frame, the cylinder mounting frame is arranged on the table surface of the workbench, a first piston cylinder is arranged on the cylinder mounting frame, a piston rod of the first piston cylinder is connected with a second air claw cylinder, a claw disc of the second air claw cylinder is connected with a first clamping block, and the first clamping block is connected with the insert in a clamping manner; the cylinder mounting frame is also provided with a third piston cylinder, a piston rod of the third piston cylinder is connected with the pressing plate, the pressing plate is provided with a through hole, and the through hole is arranged on the same axis with the second air claw cylinder and the first piston cylinder; a fourth piston cylinder is arranged on the table top of the workbench, a piston rod of the fourth piston cylinder is connected with a terminal sealing part, a sealing ring is arranged on the terminal sealing part, and the terminal sealing part is communicated with the test volume interface; a fifth gas claw cylinder is further arranged on the table top of the workbench, a claw disc of the fifth gas claw cylinder is connected with a second clamping block, the second clamping block is connected with a gas terminal in a clamping mode, the gas terminal is communicated with the terminal sealing part, and the fifth gas claw, a through hole of the pressing plate, the second gas claw cylinder and the first piston cylinder are arranged on the same axis; the gas interface of first piston cylinder, the gas interface of second gas claw cylinder, the gas interface of third piston cylinder, the gas interface of fourth piston cylinder, the gas interface of fifth gas claw cylinder all communicate with the air pressure regulating valve, the air pressure regulating valve sets up on airtight appearance installation cabinet's front, the air pressure regulating valve with the balanced gas vent is connected.
Preferably, be provided with the solenoid valve mount pad on the workstation bottom plate, the solenoid valve mount pad is provided with the solenoid valve group of control gas circuit break-make, the solenoid valve group is provided with the solenoid valve group air inlet, the solenoid valve group air inlet is connected with the pneumatic control valve, the solenoid valve group still includes first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve, fifth solenoid valve, first solenoid valve corresponds the interface of connecting first piston cylinder, and the second solenoid valve corresponds the gas interface of connecting second gas claw cylinder, and the third solenoid valve corresponds the gas interface of connecting third piston cylinder, and the fourth solenoid valve corresponds the gas interface of connecting fourth piston cylinder, and the fifth solenoid valve corresponds the gas interface of connecting fifth gas claw cylinder, the battery group is connected with automatic control system.
Preferably, the bottom of the cylinder mounting rack is provided with a first slide rail, a sliding block is arranged on the table top of the workbench, and the cylinder mounting rack can slide on the sliding block through the first slide rail; the cylinder mounting bracket upper portion is provided with the second slide rail, be provided with slidable cylinder mounting panel on the second slide rail, the upper surface of cylinder mounting panel is provided with first piston cylinder, and the lower surface is provided with third piston cylinder.
Preferably, the back of the airtight instrument is further provided with a standard volume interface, the standard volume interface is connected with a labeling container, and the standard container is a closed container with a known and fixed volume.
Preferably, the third piston cylinder is further provided with a guide rod, and the guide rod penetrates through the pressure plate.
Preferably, the table top of the workbench is further provided with a guide block, the guide block is provided with a guide hole, and the guide hole and the sealing ring are concentrically arranged.
Preferably, two sides of the fourth piston cylinder are fixedly connected to an L-shaped plate, and the L-shaped plate is mounted on the table top of the workbench through screws.
Preferably, the bottom of the balance tank is provided with a support leg, and the support leg is placed on a bottom plate of the workbench.
Preferably, the bottom of the workbench is also provided with universal wheels.
The utility model discloses a medical gas terminal leak testing can realize automatic, quantitative detection, and the testing result is accurate, has reduced intensity of labour simultaneously.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the leakage detecting unit of the present invention, i.e., an enlarged view of a portion a in fig. 1;
FIG. 3 is a schematic view of the structure of the solenoid valve assembly of the present invention;
FIG. 4 is a schematic view of the front structure of the mounting cabinet of the middle air-tight instrument of the present invention;
FIG. 5 is a schematic view of the back structure of the middle air-tight instrument of the present invention;
fig. 6 is the sectional structure diagram of the assembly relationship of the first piston cylinder, the second pneumatic claw cylinder and the third piston cylinder in the present invention.
Wherein, the names corresponding to the reference numbers are:
1-an air supply pipeline, 2-a balance tank, 201-a balance tank air inlet, 202-a balance tank air outlet, 3-a workbench, 31-a slide block, 4-an electromagnetic valve group, 401-an electromagnetic valve mounting seat, 402-a first electromagnetic valve, 403-a second electromagnetic valve, 404-a third electromagnetic valve, 405-a fourth electromagnetic valve, 406-a fifth electromagnetic valve, 407-an electromagnetic valve group air inlet, 5-an automatic control system, 6-a gas tightness instrument mounting cabinet, 601-a starting button, 602-a reset button, 603-a qualified indicator light, 604-an audible and visual alarm, 605-an emergency stop button, 606-a gas pressure gauge, 7-a gas tightness instrument, 701-an air outlet, 702-an air inlet, 703-a standard volume interface and 704-a test volume interface, 705-operating interface, 8-pneumatic pressure regulating valve, 9-standard container, 10-cylinder mounting rack, 1001-cylinder mounting board, 101-first slide rail, 102-second slide rail, 11-first piston cylinder, 12-second pneumatic claw cylinder, 13-first clamping block, 14-insert, 15-third piston cylinder, 16-pressing board, 1601-through hole, 17-fourth piston cylinder, 18-terminal sealing part, 1801-sealing ring, 19-guiding block, 1901-guiding hole, 20-second clamping block, 21-fifth pneumatic claw cylinder, 22-gas terminal, 2201-base gas input port, 2202-pressing cover, 23-guiding rod.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
Example 1
An automatic control device for medical gas terminal leakage detection is disclosed, as shown in fig. 1, 4 and 5, and comprises a workbench 3, wherein an airtight instrument installation cabinet 6 and a leakage detection part are arranged on the surface of the workbench 3, a bottom plate is arranged at the lower part of the workbench 3, a balance tank 2 is arranged on the bottom plate, an automatic control system 5 is arranged on the bottom plate of the workbench 3, and a PLC control system is arranged in the automatic control system 5 and used for controlling linkage of the automatic control device for medical gas terminal leakage detection; the air tightness instrument mounting cabinet 6 is provided with an air tightness instrument 7, a PLC control system is arranged in the air tightness instrument 7 and used for controlling a detection stroke, the front side of the air tightness instrument 7 is provided with an operation interface 705, and the back side of the air tightness instrument 7 is provided with an air inlet 701, an air outlet 702 and a test volume interface 704; the front surface of the airtight instrument mounting cabinet 6 is provided with a starting button 601, a qualified indicator lamp 603, an audible and visual alarm 604 and a gas pressure gauge 606, the airtight instrument mounting cabinet 6 is also provided with a reset button 602 for resetting of detection tests and an emergency stop button 605 for emergently stopping leakage detection tests; balance tank air inlet 201 and balance tank gas vent 202 are provided with on balance tank 2, balance tank gas vent 202 is connected with air inlet 702 of airtight appearance 7, the test volume interface 704 and the gas terminal 22 intercommunication of airtight appearance 7, gas terminal 22 can dismantle the connection on the leak detection portion. The utility model discloses an automatic control system and PLC control system in it for control whole automatic control device's linkage, if be connected with corresponding button on the airtight appearance and make corresponding instruction according to actual conditions, the PLC control system that automatic control system and set up in it is the technical means that technical staff is familiar with in the field of technology, does not carry out detailed explanation here again. The utility model discloses an airtight appearance 7 is the common gas tightness detection device in this field, is provided with the PLC control system who detects stroke control in it for control detects the stroke, and airtight appearance and PLC control system in it are known for the skilled person in this field, do not carry out detailed explanation here again. Airtight appearance installation cabinet 6 freely places in workstation 3 upper right side, and airtight appearance 7 accessible screw fixation mode is installed in airtight appearance installation cabinet 6, and airtight appearance installation cabinet 6 openly is equipped with start button 601, qualified pilot lamp 603, audible-visual annunciator 604, gas gauge 606 in proper order, and airtight appearance 7 back is equipped with gas vent 701, air inlet 702, test volume interface 704, and the front is equipped with operation interface 705, sets up each item technical parameter through operation interface 705. The working mode of the detection device is as follows: working gas is provided through a balance tank, a balance tank gas inlet 201 is connected with a gas supply pipeline 1, a balance tank gas outlet 202 is connected with a gas inlet 701 of an airtight instrument 7 through a hose, the gas is filled into a gas terminal 22 to be detected through a pipeline through a test volume interface 704 of the airtight instrument 7, leakage detection is started, after the gas terminal 22 to be detected is filled with gas with certain pressure and certain volume, ventilation supply of the gas inlet 701 of the airtight instrument 7 is cut off, the pressure is stable after the gas terminal is kept still for a period of time, the measured pressure change is displayed through the airtight instrument after the set measuring time, if the leakage rate is within the set allowable leakage range, an qualified indicator lamp 603 on an airtight instrument mounting cabinet 6 is controlled to be on by an automatic control system 5, and the inspection; if the detected leakage rate exceeds the set allowable leakage range, the automatic control system 5 controls the audible and visual alarm 604 on the airtight instrument mounting cabinet 6 to give an audible and visual alarm to prompt an operator that the gas terminal is unqualified. The detection device realizes automatic detection, and the medical gas terminal 22 does not need to be placed into water for observation, so that certain corrosion caused by incomplete moisture purging of the medical gas terminal 22 cannot be caused.
Example 2
Based on the above embodiment 1, as shown in fig. 1-2, the leakage detection portion includes a cylinder mounting bracket 10, the cylinder mounting bracket 10 is disposed on the table surface of the workbench 3, a first piston cylinder 11 is disposed on the cylinder mounting bracket 10, a piston rod of the first piston cylinder 11 is connected to a second air gripper cylinder 12, a catch tray of the second air gripper cylinder 12 is connected to a first clamping block 13, the first clamping block 13 is connected to an insert 14 in a clamping manner, that is, an inner edge of the clamping block 1 has the same shape as a clamping position of the insert 14, so as to achieve a clamping function for the insert 14, the insert 14 is an insert 14 of a gas terminal 22, which is common to those skilled in the art, and one end of the insert 14 is provided with a structure corresponding to the gas terminal 22 so as to be connected to the gas terminal 22; the cylinder mounting frame 10 is further provided with a third piston cylinder 15, a piston rod of the third piston cylinder 15 is connected with a pressing plate 16, the pressing plate 16 is provided with a through hole 1601, the through hole 1601 is in the same axis as the second pneumatic claw cylinder 12, and the first piston cylinder 11 is in the same axis; a fourth piston cylinder 17 is arranged on the table top of the workbench 3, a piston rod of the fourth piston cylinder 17 is connected with a terminal sealing part 18, a sealing ring 1801 is arranged on the terminal sealing part 18, and the terminal sealing part 18 is communicated with the test volume interface 704; the table top of the workbench 3 is also provided with a fifth pneumatic claw cylinder 21, a claw disc of the fifth pneumatic claw cylinder 21 is connected with a second clamping block 20, the second clamping block 20 is connected with a gas terminal 22 in a clamping mode, the gas terminal 22 is connected with the terminal sealing component 18, the inner edge of the clamping block 2 has the same shape as the clamping position of the gas terminal 22 to be tested, and the clamping function of the gas terminal 22 is achieved. The fifth air claw cylinder 21 and 1601 through holes, the second air claw cylinder 12 and the first piston cylinder 11 are on the same axis; the gas interface of first piston cylinder 11, the gas interface of second gas claw cylinder 12, the gas interface of third piston cylinder 15, the gas interface of fourth piston cylinder 17, the gas interface of fifth gas claw cylinder 21 all communicate with air pressure regulating valve 8, air pressure regulating valve 8 sets up on airtight appearance installation cabinet 6's front, air pressure regulating valve 8 with balanced gas vent 202 is connected. In the present embodiment, the first piston cylinder 11, the second air claw cylinder 12, the third piston cylinder 15, the fourth piston cylinder 17, and the fifth air claw cylinder 21 are all piston cylinders and air claw cylinders commonly used in the art, and the structure and the operation principle thereof are well known to those skilled in the art and will not be explained in detail herein.
The insert 14 and gas terminal 22 of the present invention are conventional medical gas terminals, and the gas terminal 22 includes a base gas input port 2201 and a gland 2202, the structure of which is well known to those skilled in the art, and therefore, will not be described in detail herein. The utility model discloses a concrete leak detection portion, this leak detection portion not only can realize that gas terminal 22's fixed inflation detects, can cross the installation and the dismantlement of realizing gas terminal 22 and insert 14's automation simultaneously, makes the utility model discloses a detection device is more automatic.
The utility model discloses a medical gas terminal leak testing automatic control device provides working gas through the balance tank, and balance tank air inlet 201 is connected with air supply line 1, and balance tank gas outlet 202 is connected to airtight appearance air inlet 701 and pneumatic control valve 8 respectively through the hose, through adjusting pneumatic control valve 8 with pressure drop to cylinder working pressure within range, the operation of each cylinder is realized to the cylinder interface of gas supply to each cylinder after the decompression.
Airtight appearance installation cabinet 6 freely places in workstation 3 upper right side, airtight appearance 7 accessible screw fixation mode is installed in airtight appearance installation cabinet 6, and airtight appearance installation cabinet 6 openly is equipped with start button 601 in proper order, qualified pilot lamp 603, audible-visual annunciator 604, gas pressure gauge 606, atmospheric pressure governing valve 8, and airtight appearance 7 back is equipped with gas vent 701, air inlet 702, standard volume interface 703, test volume interface 704, and the front is equipped with operation interface 705, sets up each item technical parameter through operation interface 705.
In the initial state, the first piston cylinder 11 is in a retreating state, the second air gripper cylinder 12 is in a clamping state, the insert 14 is clamped on the first clamping block 13, the third piston cylinder 15 is in a retreating state, the fourth piston cylinder 17 is in a retreating state, and the fifth air gripper cylinder 21 is in a releasing state; the gas terminal 22 to be detected is placed on the second clamping block 20, the start button 601 is pressed, the second gas claw cylinder 21 drives the second clamping block 20 to clamp the gas terminal 22 to be detected under the action of gas force, the piston rod of the first piston cylinder 11 drives the second gas claw cylinder 12 to move downwards under the push of gas force, the insert 14 is inserted into the gas terminal 22 to be detected, the second gas claw cylinder 12 drives the first clamping block 13 to release the insert 14 under the action of gas force, then the first piston cylinder 11 returns to the initial state, the second gas claw cylinder 12 returns to the initial state, the fourth piston cylinder 17 drives the terminal sealing part 18 to move rightwards under the action of gas force, the sealing ring 1801 seals the base gas inlet 2201 of the gas terminal 22 to be detected, gas enters the terminal sealing part 18 from the test volume interface of the gas-tight instrument through a pipeline to charge the gas terminal 22 to be detected, starting to detect the leakage of the insertion piece 14, after the gas terminal 22 to be detected is filled with gas with certain pressure and certain volume, disconnecting the ventilation supply of the gas inlet of the gas tightness instrument, standing for a period of time to stabilize the pressure, displaying the change of the measured pressure by the gas tightness instrument after the set measuring time, and if the leakage rate is in the set allowable leakage range, controlling the qualified indicator lamp 603 on the gas tightness instrument installation cabinet 6 to be on by the automatic control system 5 to indicate that the detection is qualified; then, the second gas claw cylinder 12 loosens the first clamping block 13 under the action of gas force, the first piston cylinder 11 drives the second gas claw cylinder 12 to move downwards under the action of gas force, then the second gas claw cylinder 12 drives the first clamping block 13 to clamp the insert 14 under the action of gas force, the third piston cylinder 15 drives the pressing plate 16 to move downwards under the action of gas force, the pressing cover 2202 of the gas terminal 22 to be detected is pressed down, the first piston cylinder 11 returns to the initial state under the action of gas force, the third piston cylinder 15 returns to the initial state under the action of gas force, gas enters the terminal sealing part 18 from the test volume interface 704 through a pipeline to be detected again to inflate the gas terminal 22 to be detected, leakage detection without the insert 14 is started, if the detection result is qualified, the qualified indicator lamp 603 on the gas tightness instrument mounting cabinet 6 is lighted, the fourth piston cylinder 17 returns to the initial state, and the fifth gas claw cylinder 21 returns to the initial state, the gas terminal 22 to be detected is taken down, if the detected leakage rate exceeds the set allowable leakage range, the automatic control system 5 controls the audible and visual alarm 604 on the airtight instrument installation cabinet 6 to send out audible and visual alarm to prompt an operator that the gas terminal is unqualified to be detected, then the fourth piston cylinder 17 returns to the initial state, and the fifth gas claw cylinder 21 returns to the initial state to take down the gas terminal 22 to be detected.
If the leakage detection of the insertion of the insert is carried out, the detection result is unqualified, the audible and visual alarm 604 on the airtight instrument installation cabinet 6 gives out audible and visual alarm, the second gas claw cylinder 12 loosens the first clamping block 13 under the action of gas force, the first piston cylinder 11 drives the second gas claw cylinder 12 to move downwards under the action of gas force, then the second gas claw cylinder 12 drives the first clamping block 13 to clamp the insert 14 under the action of gas force, the third piston cylinder 15 drives the pressing plate 16 to move downwards under the action of gas force, the pressing cover 2202 of the gas terminal 22 to be detected is pressed down, the first piston cylinder 11 returns to the initial state under the action of gas force, the third piston cylinder 15 returns to the initial state, the fourth piston cylinder 17 returns to the initial state, and the fifth gas claw cylinder 21 returns to the initial state to take off the gas terminal 22 to be detected.
The utility model discloses a control leakage detection portion realizes the installation of insert 14 and gas terminal 22 and dismantles thereby realize the gas terminal 22 of not insert and the detection of the gas terminal 22 of insert, fill into the gas of certain volume of certain pressure after to gas terminal 22, the supply of ventilating of the air inlet 701 of the airtight appearance 7 of disconnection, static one section makes its pressure stable, through the change of the PLC control system control detection stroke in airtight appearance 7 after established measuring time passes, thereby according to qualified pilot lamp 603 of measuring result control and audible-visual annunciator 604, whether qualified with the warning operating personnel.
Example 3
Based on the above embodiment 2, as shown in fig. 1 and fig. 3, a solenoid valve mounting seat 401 is disposed on a bottom plate of the workbench 3, the solenoid valve mounting seat 401 is provided with a solenoid valve set 4 for controlling the on/off of a gas path, the solenoid valve set 4 is provided with a solenoid valve set gas inlet 407, the solenoid valve set gas inlet 407 is connected to a gas pressure regulating valve 8, the solenoid valve set 4 further includes a first solenoid valve 402, a second solenoid valve 403, a third solenoid valve 404, a fourth solenoid valve 405, and a fifth solenoid valve 406, the first solenoid valve 402 is correspondingly connected to a gas interface of the first piston cylinder 11, the second solenoid valve 403 is correspondingly connected to a gas interface of the second gas claw cylinder 12, the third solenoid valve 404 is correspondingly connected to a gas interface of the third piston cylinder 15, the fourth solenoid valve 405 is correspondingly connected to a gas interface of the fourth piston cylinder 17, and the fifth solenoid valve 406 is correspondingly connected to a gas interface of the, the battery valve group 4 is connected with an automatic control system 5, and the automatic control system 5 is arranged on a bottom plate of the workbench 3. In this embodiment, set up solenoid valve group 4 and be connected with automatic control system 5, and solenoid valve group air inlet 407 is connected with pneumatic control valve 8, and the gas connection of each solenoid valve is connected with each cylinder to the realization is to the automatic control of cylinder, further realizes the automation of detection.
Example 4
Based on the above embodiment 2 or 3, as shown in fig. 1-2, the bottom of the cylinder mounting bracket 10 is provided with a first slide rail 101, the table top of the workbench 3 is provided with a slide block 31, and the cylinder mounting bracket 10 can slide on the slide block 31 through the first slide rail 101; the upper portion of the cylinder mounting rack 10 is provided with a second slide rail 102, a slidable cylinder mounting plate 1001 is arranged on the second slide rail 102, the upper surface of the cylinder mounting plate 1001 is provided with a first piston cylinder 11, and the lower surface is provided with a third piston cylinder 15. The cylinder mount 10 is further restricted in this embodiment such that the cylinder mount 10 slides on the table surface of the table 3, and the cylinder mount plate 11 slides on the mount 10 to adjust the position of the first piston cylinder 11, so that the first piston cylinder 11, the second gripper cylinder 12, the through hole 1601 in the pressure plate 16, and the fifth gripper cylinder 21 are on the same axis.
Example 5
Based on the above embodiment 4, as shown in fig. 1 and 5, a standard volume interface 703 is further disposed on the back of the air-tight instrument 7, the standard volume interface 703 is connected to the labeling container 9, and the standard container 9 is a closed container with a known and fixed volume. In this embodiment, a standard volume interface 703 is disposed on the back of the gas tightness meter 7, the standard volume interface 703 is connected to a standard container 9, the standard container 9 is a closed container with a known and fixed volume, and can implement quantitative measurement of gas leakage, the measurement method is to measure the pressure difference between the standard volume and the test volume twice, the standard volume is the volume of the standard container 9, to obtain a differential pressure variation Δ p, and the specific leakage rate is calculated by using a formula in combination with the detection time t. The calculation formula is as follows:
in the formula QL-gas leakage flow, mL/s;
Δ p-differential pressure variation, Pa;
pa-atmospheric pressure, Pa;
t-test time, s, corresponding to differential pressure Δ p;
VT-detecting the volume of the container, mL;
VR-reference container volume, mL;
pt-a test pressure, Pa.
Example 6
Based on the above embodiment 5, as shown in fig. 1-2 and 6, the third piston cylinder 15 is further provided with a guide rod 23, and the guide rod 23 penetrates through the pressure plate 16. In the present embodiment, a guide rod 23 is provided on the third piston cylinder 15, and the guide rod 23 penetrates the pressure plate 16 to limit the circumferential rotation of the pressure plate 16, so that the through hole 1601 of the pressure plate 16 is in the same axial direction as the second gripper cylinder 2.
Example 7
Based on the above embodiment 5 or 6, as shown in fig. 1-2, the table top of the working table 3 is further provided with a guide block 19, the guide block 19 is provided with a guide hole 1901, and the guide hole 1901 and the sealing ring 1801 are concentrically installed. In this embodiment, a guide block 19 is provided on the table top of the table 3, and a guide hole 1901 of the guide block 19 is concentrically installed with a seal ring 1801 so as to guide the installation of the terminal sealing member 18 and the gas terminal 22, and when the gas terminal 22 to be inspected is placed on the second clamping block 20 and the gas inlet 2201 of the base passes through the guide hole 1901, the start button 601 is turned on again, thereby preventing the terminal sealing member 18 and the gas terminal 22 from being displaced when they are installed
Example 8
Based on the embodiment 7, as shown in fig. 1-2, two sides of the fourth piston cylinder 17 are fixedly connected to L-shaped plates, and the L-shaped plates are mounted on the table top of the workbench 3 through screws. In this embodiment, the fixing manner of fixing the fourth piston cylinder 17 on the surface of the workbench 3 is mainly described, that is, an L-shaped plate is fixed to the fourth piston cylinder 17, and the L-shaped plate is installed on the workbench 3 through screws, so as to fix the fourth piston cylinder 17 on the surface of the workbench 3. The fixing manner and the fixing structure are not limited to the above-described one as long as the fourth piston cylinder 17 can be fixed to the surface of the table 3.
Example 9
Based on the above embodiment 8, as shown in fig. 1, the bottom of the balance tank 2 is provided with a support foot, and the support foot is placed on the bottom plate of the workbench 3. In this embodiment, the bottom of the balance tank 2 is provided with a support leg, which is convenient to install and place on the bottom plate of the workbench 3.
Example 10
Based on the above embodiments 8 or 9, as shown in fig. 1, the bottom of the workbench 3 is further provided with universal wheels. In this embodiment, the universal wheels are arranged at the bottom of the workbench 3, so that the whole automatic control device for detecting the gas terminal leakage is convenient to move.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. An automatic control device for detecting leakage of a medical gas terminal is characterized by comprising a workbench, wherein an air tightness instrument mounting cabinet and a leakage detection part are arranged on the workbench surface, a bottom plate is arranged at the lower part of the workbench, a balance tank is arranged on the bottom plate, an automatic control system is arranged on the bottom plate of the workbench, and a PLC (programmable logic controller) control system is arranged in the automatic control system and is used for controlling linkage of the automatic control device for detecting leakage of the medical gas terminal; the air tightness instrument mounting cabinet is provided with an air tightness instrument, a PLC control system is arranged in the air tightness instrument and used for controlling the detection stroke, the front side of the air tightness instrument is provided with an operation interface, and the back side of the air tightness instrument is provided with an air inlet, an air outlet and a test volume interface; the front surface of the air tightness instrument mounting cabinet is provided with a starting button, a qualified indicator light, an audible and visual alarm and a gas pressure gauge; be provided with balance tank air inlet and balance tank gas vent on the balance tank, the balance tank gas vent is connected with the air inlet of airtight appearance, the test volume interface and the gas terminal intercommunication of airtight appearance, the connection can be dismantled on the leak testing portion at gas terminal.
2. The automatic control device for the leakage detection of the medical gas terminal according to claim 1, wherein the leakage detection part comprises a cylinder mounting frame, the cylinder mounting frame is arranged on the table top of the workbench, a first piston cylinder is arranged on the cylinder mounting frame, a piston rod of the first piston cylinder is connected with a second air claw cylinder, a claw disc of the second air claw cylinder is connected with a first clamping block, and the first clamping block is connected with the insert in a clamping manner; the cylinder mounting frame is also provided with a third piston cylinder, a piston rod of the third piston cylinder is connected with the pressing plate, the pressing plate is provided with a through hole, and the through hole is arranged on the same axis with the second air claw cylinder and the first piston cylinder; a fourth piston cylinder is arranged on the table top of the workbench, a piston rod of the fourth piston cylinder is connected with a terminal sealing part, a sealing ring is arranged on the terminal sealing part, and the terminal sealing part is communicated with the test volume interface; a fifth gas claw cylinder is further arranged on the table top of the workbench, a claw disc of the fifth gas claw cylinder is connected with a second clamping block, the second clamping block is connected with a gas terminal in a clamping mode, the gas terminal is communicated with the terminal sealing part, and the fifth gas claw, a through hole of the pressing plate, the second gas claw cylinder and the first piston cylinder are arranged on the same axis; the gas interface of first piston cylinder, the gas interface of second gas claw cylinder, the gas interface of third piston cylinder, the gas interface of fourth piston cylinder, the gas interface of fifth gas claw cylinder all communicate with the air pressure regulating valve, the air pressure regulating valve sets up on airtight appearance installation cabinet's front, the air pressure regulating valve with the surge tank gas vent is connected.
3. The automatic control device for the leakage detection of the medical gas terminal according to claim 2, wherein the bottom plate of the workbench is provided with a solenoid valve mounting seat, the solenoid valve mounting seat is provided with a solenoid valve set for controlling the on-off of a gas circuit, the solenoid valve set is provided with a solenoid valve set gas inlet, the solenoid valve set gas inlet is connected with a gas pressure regulating valve, the solenoid valve set further comprises a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve and a fifth solenoid valve, the first solenoid valve is correspondingly connected with the interface of the first piston cylinder, the second solenoid valve is correspondingly connected with the gas interface of the second gas claw cylinder, the third solenoid valve is correspondingly connected with the gas interface of the third piston cylinder, the fourth solenoid valve is correspondingly connected with the gas interface of the fourth piston cylinder, and the fifth solenoid valve is correspondingly connected with the gas interface of the fifth gas claw cylinder, the electromagnetic valve group is connected with an automatic control system.
4. The automatic control device for the leakage detection of the medical gas terminal according to claim 2 or 3, wherein a first slide rail is arranged at the bottom of the cylinder mounting rack, a slide block is arranged on the table top of the workbench, and the cylinder mounting rack can slide on the slide block through the first slide rail; the cylinder mounting bracket upper portion is provided with the second slide rail, be provided with slidable cylinder mounting panel on the second slide rail, the upper surface of cylinder mounting panel is provided with first piston cylinder, and the lower surface is provided with third piston cylinder.
5. The automatic control device for the leakage detection of the medical gas terminal according to claim 4, wherein a standard volume interface is further arranged on the back surface of the gas tightness instrument, the standard volume interface is connected with a standard container, and the standard container is a closed container with a known and fixed volume.
6. The automatic control device for the leakage detection of the medical gas terminal according to claim 5, wherein the third piston cylinder is further provided with a guide rod, and the guide rod penetrates through the pressure plate.
7. The automatic control device for the leakage detection of the medical gas terminal according to claim 5 or 6, wherein a guide block is further arranged on the table top of the workbench, the guide block is provided with a guide hole, and the guide hole and the sealing ring are concentrically arranged.
8. The automatic control device for the leakage detection of the medical gas terminal according to claim 7, wherein two sides of the fourth piston cylinder are fixedly connected to an L-shaped plate, and the L-shaped plate is mounted on the table top of the workbench through screws.
9. The automatic control device for the leakage detection of a medical gas terminal according to claim 8, wherein the bottom of the balance tank is provided with a support foot, and the support foot is placed on the bottom plate of the workbench.
10. An automatic control device for medical gas terminal leakage detection according to any of claims 8-9, characterized in that the bottom of the workbench is further provided with universal wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021145682.2U CN212158968U (en) | 2020-06-19 | 2020-06-19 | Automatic control device for medical gas terminal leakage detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021145682.2U CN212158968U (en) | 2020-06-19 | 2020-06-19 | Automatic control device for medical gas terminal leakage detection |
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| Publication Number | Publication Date |
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| CN212158968U true CN212158968U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021145682.2U Active CN212158968U (en) | 2020-06-19 | 2020-06-19 | Automatic control device for medical gas terminal leakage detection |
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| Country | Link |
|---|---|
| CN (1) | CN212158968U (en) |
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2020
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