Density relay calibrating device

Abstract

The invention relates to the technical field of density relays, in particular to a density relay calibrating device. The device comprises a base, a plurality of vacuum chucks fixedly arranged on the lower surface of the base, a group of relay fixing assemblies symmetrically arranged on the front side and the rear side of the upper surface of the base, a first connecting plate vertically and fixedly arranged on the edge of one side of the upper surface of the base, and a group of telescopic supporting assemblies symmetrically and fixedly arranged on the outer surface of the connecting plate. The second connecting plate is fixedly arranged between the telescopic supporting assemblies, and the air pipe fixing assemblies are fixedly arranged on the outer side face of the second connecting plate. The invention aims to provide the density relay calibrating device so as to protect and fix the gas pipeline and prevent the gas pipeline from moving in the calibrating process as much as possible.

Description

Technical Field

[0001] This invention relates to the field of density relay technology, and in particular to a density relay calibration device. Background Technology

[0002] The HDMD-H1 SF6 gas density relay calibration device is an intelligent, fully automatic SF6 gas density relay calibration device. Utilizing single-cycle instruction microcomputer technology, its operating speed is 20 times that of ordinary single-chip microcomputers. It can perform on-site calibration of SF6 density relays with pointer-type contact output and intelligent current output. It uses an interrupt method to capture the relay's operation in real time. This portable calibration instrument can perform standard conversion of SF6 gas pressure at any ambient temperature. It can also calibrate SF6 density gauges and pressure gauges.

[0003] When using this device, ensure that the control power to the density relay calibrator is disconnected. Connect the signal wires between the calibrator and the meter to be calibrated, and connect the relay as shown on the screen (refer to the density relay instructions for special wiring methods). Insert the vent tube, and connect the small air level to the air inlet using the air inlet tube. Connect the density relay to the detection port using the detection air tube for calibration.

[0004] However, it should be noted that during the calibration of density relays, in order to avoid affecting the measurement accuracy, it is strictly forbidden to vibrate the equipment or move the air tube. However, in the current calibration process, the air release tube, air inlet tube and test air tube are usually wrapped in a circle, and the air tube is completely exposed. It is easy to be moved by external forces, which will affect the measurement accuracy.

[0005] Therefore, how to design a density relay calibration device that can solve the above-mentioned technical problems is a technical problem that needs to be solved. Summary of the Invention

[0006] To address the aforementioned problems, the present invention aims to provide a density relay calibration device to protect and secure the tracheal tubing, minimizing the possibility of movement of the tracheal tubing during the calibration process.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: including a base, a plurality of vacuum suction cups fixed to the lower surface of the base, a set of relay fixing assemblies symmetrically arranged on the front and rear sides of the upper surface of the base, a first connecting plate vertically fixed to one edge of the upper surface of the base, a set of telescopic support assemblies symmetrically fixed to the outer surface of the connecting plate, a second connecting plate fixed between the set of telescopic support assemblies, and a plurality of air pipe fixing assemblies fixed to the outer side of the second connecting plate.

[0008] Each tracheal fixation assembly includes a square-shaped fixed housing, a third connecting plate movably passing through the fixed housing, several sets of catheter fixation sub-assemblies fixed to the front side of the third connecting plate, a connecting cover covering the top of the fixed housing, a threaded connector connected to the connecting cover and the side wall of the fixed housing extending away from the third connecting plate, and a threaded connector threadedly connected to the threaded connector for locking the threaded connector; a guide rail is fixedly provided inside the fixed housing along its length, and a slider is fixedly provided on the third connecting plate relative to the guide rail, the slider being slidably disposed within the guide rail; each catheter fixation sub-assembly includes several circumferentially arranged arc-shaped silicone fixing parts for fixing the catheter.

[0009] Furthermore, the number of vacuum suction cups is at least two.

[0010] Furthermore, the upper surface of the base is symmetrically provided with mounting slots along its width. A set of relay fixing components is respectively disposed on the mounting slots on both sides. Each set of relay fixing components includes a first screw that is rotatably circumferentially rotatable at its front end, passing through the side wall of the base and rotatably connected to the inner side wall of the mounting slot; a slide block slidably sleeved on the first screw; an abutment plate fixedly connected to the outer peripheral wall of the slide block and perpendicular to the upper surface of the base; and a rotating component fixed to the movable end of the first screw for controlling the rotation of the first screw. This facilitates adjustment according to the relay model. By rotating the rotating component, the first screw is rotated, causing the slide block and the abutment plate to abut against the front and rear side walls of the relay.

[0011] Furthermore, the number of the tracheal fixation components is three, and the surfaces of adjacent fixation housings are fixedly connected.

[0012] Furthermore, the number of catheter fixation sub-assemblies is at least two, and several catheter fixation sub-assemblies are arranged from the inside to the outside along the center position of the third connecting plate.

[0013] Furthermore, each of the telescopic support components includes a set of first support plates symmetrically fixed to the outer side of the first connecting plate, a first and second rotating shafts fixed at the upper and lower ends between the first support plates, a set of second support plates parallel to the first support plates, a third and fourth rotating shafts fixed at the upper and lower ends between the second support plates, a first connecting rod rotatably connected at one end to the first rotating shaft, a second connecting rod rotatably connected at one end to the second rotating shaft, a third connecting rod rotatably connected at one end to the third rotating shaft, a fourth connecting rod rotatably connected at one end to the fourth rotating shaft, a first connecting support rod rotatably connected at one end to the middle of the second connecting rod via a rotating shaft, a second connecting support rod rotatably connected at one end to the middle of the third connecting rod via a rotating shaft, a fifth rotating shaft rotatably connected to the movable ends of the first connecting rod, the first connecting support rod, and the third connecting rod, and a sixth rotating shaft rotatably connected to the movable ends of the second connecting rod, the second connecting support rod, and the fourth connecting rod; the second connecting plate is fixed between the second support plates on both sides.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention includes a trachea fixing assembly. Several trachea fixing sub-assemblies secure the trachea to the outer side of the third connecting plate, preventing movement of the trachea due to external forces. Both ends of the trachea pass through threaded connectors, and the threaded connectors deform at their openings to fix the trachea's position, preventing stretching. The trachea fixing assembly protects the trachea as much as possible, fixing its position and minimizing movement or vibration during testing, which could affect measurement accuracy.

[0016] 2- This invention features a vacuum suction cup and a relay fixing assembly. By rotating the rotating component, the abutment plate is moved to the front and rear sides of the relay to stabilize the relay. The vacuum suction cup also increases the stability of the base and the relay, resulting in high stability and flexibility of use.

[0017] 3- The present invention is equipped with a telescopic support component, which makes it convenient to stretch the telescopic support component and adjust the position of the airway fixing component according to the actual situation, making it highly practical and flexible. Attached Figure Description

[0018] Figure 1 This is a side view of a cross-section of the present invention;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is a schematic diagram of the trachea fixation component of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Base, 11-Mounting slot;

[0023] 2-Vacuum suction cup;

[0024] 3-Relay fixing assembly, 31-First screw, 32-Slide, 33-Abutment plate, 34-Rotating component;

[0025] 4-First connecting plate;

[0026] 5-Telescopic support assembly, 51-First support plate, 52-First pivot, 53-Second pivot, 54-Second support plate, 55-Third pivot, 56-Fourth pivot, 57-First connecting rod, 58-Second connecting rod, 59-Third connecting rod, 50-Fourth connecting rod, 511-First connecting support rod, 512-Second connecting support rod, 513-Fifth pivot, 514-Sixth pivot;

[0027] 6-Second connecting plate;

[0028] 7-Tracheal fixation assembly, 71-Fixed housing, 711-Guide rail, 72-Third connecting plate, 721-Slider, 73-Tube fixation sub-assembly, 74-Connecting cover, 75-Threaded connector, 76-Threaded connector. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] See Figure 1-3 As shown, the solution includes a base 1, several vacuum suction cups 2 fixed to the lower surface of the base 1, a set of relay fixing assemblies 3 symmetrically arranged on the front and rear sides of the upper surface of the base 1, a first connecting plate 4 vertically fixed to one edge of the upper surface of the base 1, a set of telescopic support assemblies 5 symmetrically fixed to the outer surface of the connecting plate, a second connecting plate 6 fixed between the set of telescopic support assemblies 5, and several air pipe fixing assemblies 7 fixed to the outer side of the second connecting plate 6.

[0031] Each tracheal fixation assembly 7 includes a square-shaped fixing housing 71, a third connecting plate 72 movably passing through the fixing housing 71, several sets of catheter fixation sub-assemblies 73 fixed to the front side of the third connecting plate 72, a connecting cover 74 covering the top of the fixing housing 71, a threaded connector 75 connecting the connecting cover 74 and the side wall of the fixing housing 71 extending away from the third connecting plate 72, and a threaded connector 76 threadedly connected to the threaded connector 75 for locking the threaded connector 75; a guide rail 711 is fixedly provided inside the fixing housing 71 along its length direction, and a slider 721 is fixedly provided on the third connecting plate 72 relative to the guide rail 711, and the slider 721 is slidably disposed inside the guide rail 711; each catheter fixation sub-assembly 73 includes several arc-shaped silicone fixing parts arranged circumferentially for fixing the catheter. The aforementioned threaded connector 75 has several openings along its circumference. The inner diameter of the threaded connector 76 gradually decreases from bottom to top. When the threaded connector 76 is threadedly connected to the threaded connector 75, the inner diameter of the threaded connector 75 is reduced by the compression of the threaded connector 76 and abuts against the air tube to fix the position of the air tube. Furthermore, the inner diameter of the threaded connector 75 is the same as the outer diameter of the air tube.

[0032] The aforementioned arc-shaped silicone fastener is supported by an elastic material. It deforms under external force and recovers after the external force is removed. The arc-shaped silicone fastener has a notch to facilitate the passage of the endotracheal tube. After the notch on the arc-shaped silicone fastener is deformed under force, the notch range increases, which facilitates the passage of the endotracheal tube. After the external force is removed, the notch returns to its original position. The arc-shaped silicone fastener wraps around the endotracheal tube to fix the position of the endotracheal tube in use.

[0033] Furthermore, the number of vacuum suction cups 2 is at least two. The aforementioned vacuum suction cups 2 are prior art and will not be described in detail here.

[0034] Furthermore, the upper surface of the base 1 is symmetrically provided with mounting grooves 11 along its width direction. A set of relay fixing components 3 are respectively disposed on the mounting grooves 11 on both sides. Each set of relay fixing components 3 includes a first screw 31 with its front end rotatably passing through the side wall of the base 1 and rotatably connected to the inner side wall of the mounting groove 11, a slide block 32 slidably sleeved on the first screw 31, an abutment plate 33 fixedly connected to the outer peripheral wall of the slide block 32 and perpendicular to the upper surface of the base 1, and a rotating component 34 fixed to the movable end of the first screw 31 for controlling the rotation of the first screw 31. This facilitates adjustment according to the relay model. By rotating the rotating component 34, the first screw 31 is rotated, and the rotation of the first screw 31 causes the slide block 32 and the abutment plate 33 to abut against the front and rear side walls of the relay.

[0035] Furthermore, the number of the tracheal fixation components 7 is 3, and the surfaces of adjacent fixation housings 71 are fixedly connected.

[0036] Furthermore, the number of the catheter fixation sub-assemblies 73 is at least two, and several catheter fixation sub-assemblies 73 are arranged from the inside to the outside along the center position of the third connecting plate 72. Depending on the usage requirements, the encircling endotracheal tube can be placed into different groups of catheter fixation sub-assemblies 73 to increase the stability of the catheter fixation sub-assemblies 73.

[0037] Furthermore, each of the telescopic support components 5 includes a set of first support plates 51 symmetrically fixed to the outer side of the first connecting plate 4, a first rotating shaft 52 and a second rotating shaft 53 fixed at the upper and lower ends between the first support plates 51, a set of second support plates 54 arranged parallel to the first support plates 51, a third rotating shaft 55 and a fourth rotating shaft 56 fixed at the upper and lower ends between the second support plates 54, a first connecting rod 57 rotatably connected at one end to the first rotating shaft 52, a second connecting rod 58 rotatably connected at one end to the second rotating shaft 53, and a third connecting rod rotatably connected at one end to the third rotating shaft 55. 59. A fourth connecting rod 50, one end of which is rotatably connected to the fourth rotating shaft 56; a first connecting support rod 511, one end of which is rotatably connected to the middle of the second connecting rod 58 via a rotating shaft; a second connecting support rod 512, one end of which is rotatably connected to the middle of the third connecting rod 59 via a rotating shaft; a fifth rotating shaft 513, rotatably connected to the movable ends of the first connecting rod 57, the first connecting support rod 511, and the third connecting rod 59; and a sixth rotating shaft 514, rotatably connected to the movable ends of the second connecting rod 58, the second connecting support rod 512, and the fourth connecting rod 50; the second connecting plate 6 is fixed between the second support plates 54 on both sides. When the second support plate 54 moves outward, the first connecting rod 57 and the fourth connecting rod 50 are parallel, the second connecting rod 58 and the third connecting rod 59 are parallel, and the first connecting support rod 511 and the second connecting support rod 512 are parallel, so that the first support plate 51 and the second support plate 54 move parallel to each other.

[0038] The working principle is roughly as follows:

[0039] In use, the relay is placed on the upper surface of the base 1. The vacuum suction cup 2 on the lower surface of the base 1 increases the stability of the base 1. The relay is further fixed by the relay fixing components 3 on the front and rear sides to prevent the relay from moving.

[0040] At this point, the air tube is arranged in a circle and fixed to the outer side of the third connecting plate 72 by the arc-shaped fixing silicone piece on the outer side of the third connecting plate 72. One end of the air tube is passed through the threaded connector 75 on the connecting cover 74 and connected to the threaded connector 75 using the threaded connector 76. After locking the threaded connector 75, the position of the air tube is fixed. The other end of the air tube is passed through the threaded connector 75 on the side wall of the fixed housing 71 away from the third connecting plate 72 and connected to the threaded connector 75 using the threaded connector 76. The two ends of the air tube are connected to the relay and other detection components respectively, and the detection can be started.

[0041] The above description is merely a specific embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A density relay testing device, characterized in that: It includes a base (1), several vacuum suction cups (2) fixed to the lower surface of the base (1), a set of relay fixing assemblies (3) symmetrically arranged on the front and rear sides of the upper surface of the base (1), a first connecting plate (4) vertically fixed to one side edge of the upper surface of the base (1), a set of telescopic support assemblies (5) symmetrically fixed to the outer surface of the connecting plate, a second connecting plate (6) fixed between the set of telescopic support assemblies (5), and several air pipe fixing assemblies (7) fixed to the outer side of the second connecting plate (6). Each of the tracheal fixation components (7) includes a square-shaped fixed housing (71), a third connecting plate (72) movably passing through the fixed housing (71), several sets of catheter fixation sub-assemblies (73) fixed on the front side of the third connecting plate (72), a connecting cover (74) covering the top of the fixed housing (71), a threaded connector (75) connecting the connecting cover (74) and the side wall of the fixed housing (71) extending away from the third connecting plate (72), and a threaded connector (76) threadedly connected to the threaded connector (75) for locking the threaded connector (75); a guide rail (711) is fixedly provided in the fixed housing (71) along its length direction, and a slider (721) is fixedly provided in the third connecting plate (72) relative to the guide rail (711), and the slider (721) is slidably provided in the guide rail (711); each of the catheter fixation sub-assemblies (73) includes several arc-shaped silicone fixing parts arranged circumferentially for fixing the catheter.

2. The density relay testing device according to claim 1, characterized in that: The number of vacuum suction cups (2) is at least two.

3. The density relay testing device according to claim 1, characterized in that: The upper surface of the base (1) is symmetrically provided with mounting grooves (11) along its width direction. A set of relay fixing components (3) are respectively provided on the mounting grooves (11) on both sides. Each set of relay fixing components (3) includes a first screw (31) that is rotatably circumferentially rotatable through the side wall of the base (1) and rotatably connected to the inner side wall of the mounting groove (11), a slide (32) that is slidably sleeved on the first screw (31), an abutment plate (33) that is fixedly connected to the outer peripheral wall of the slide (32) and is perpendicular to the upper surface of the base (1), and a rotating component (34) that is fixedly installed at the movable end of the first screw (31) for controlling the rotation of the first screw (31).

4. The density relay testing device according to claim 1, characterized in that: The number of the tracheal fixation components (7) is 3, and the surfaces of adjacent fixation housings (71) are fixedly connected.

5. A density relay testing device according to claim 1, characterized in that: The number of catheter fixation sub-assemblies (73) is at least two, and several catheter fixation sub-assemblies (73) are arranged from the inside to the outside along the center position of the third connecting plate (72).

6. The density relay testing device according to claim 1, characterized in that: Each telescopic support assembly (5) includes a set of first support plates (51) symmetrically fixed to the outer side of the first connecting plate (4), a first rotating shaft (52) and a second rotating shaft (53) fixed at the upper and lower ends between the first support plates (51), a set of second support plates (54) arranged parallel to the first support plates (51), a third rotating shaft (55) and a fourth rotating shaft (56) fixed at the upper and lower ends between the second support plates (54), a first connecting rod (57) rotatably connected at one end to the first rotating shaft (52), a second connecting rod (58) rotatably connected at one end to the second rotating shaft (53), and a third connecting rod (59) rotatably connected at one end to the third rotating shaft (55). The system comprises: a fourth connecting rod (50) rotatably connected at one end to the fourth rotating shaft (56); a first connecting support rod (511) rotatably connected at one end to the middle of the second connecting rod (58) via a rotating shaft; a second connecting support rod (512) rotatably connected at one end to the middle of the third connecting rod (59) via a rotating shaft; a fifth rotating shaft (513) rotatably connected to the movable ends of the first connecting rod (57), the first connecting support rod (511), and the third connecting rod (59); and a sixth rotating shaft (514) rotatably connected to the movable ends of the second connecting rod (58), the second connecting support rod (512), and the fourth connecting rod (50); and the second connecting plate (6) is fixed between the second support plates (54) on both sides.

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