Nitrogen purging quick coupling anti-drop safety clamp and mounting method thereof

Abstract

The invention belongs to the technical field of nitrogen connectors, and particularly discloses a nitrogen purging quick connector anti-disengaging safety clamp and a mounting method thereof.The nitrogen purging quick connector anti-disengaging safety clamp comprises a nitrogen pipeline, a high-pressure hose, a first quick connector and a second quick connector, and a lock handle is fixed to the side face of the second quick connector; the surfaces of the second quick connector and the nitrogen pipeline are movably connected with an anti-falling assembly, the anti-falling assembly comprises two sets of clamping plates, the clamping plates are movably connected with the outer sides of the second quick connector and the nitrogen pipeline, the inner walls of the clamping plates are attached to the surface of the lock handle, the two opposite clamping plates are fixed through fixing bolts, and the lock handle limiting effect is achieved; the two clamping plates are connected through the connecting plate, the effect of axially limiting the quick connector is achieved, the quick connector is prevented from being disengaged, and the problems that due to the fact that an existing high-pressure hose is frequently dismantled and used for a long time, an internal rubber gasket is shrunk and aged, and the quick connector is prone to being disengaged when nitrogen is quickly introduced in the later period, and safety risks exist are solved.

Description

Technical Field

[0001] The invention relates to the technical field of nitrogen joints, and in particular to an anti-detachment safety card of a nitrogen purge quick joint and an installation method thereof. Background Art

[0002] Nitrogen is generally used for gas pipeline purging. Only in special circumstances are qualified flue gas or steam used. In general, nitrogen replacement purging is used. High-pressure hose connections are easy to remove. Gas connected through valves may flow back into the nitrogen pipeline or steam pipeline, causing gas leakage and gas poisoning to the workers. Therefore, the high-pressure hose connection must be removed after the pipeline is purged to avoid backflow accidents.

[0003] However, the high-pressure hose is often dismantled, and the internal rubber gasket will age and shrink after long-term use. When nitrogen is passed too quickly, the concave and convex slots of the quick connector are easily loosened and disengaged. The operator fails to install the movable lock sleeve of the quick connector in place, causing it to break away, which poses a safety risk. In addition, when purchasing, the axial spacing of different models and brands of quick connectors with the same pipe diameter is also different, and the general anti-slip device cannot be adapted to all quick connectors. Therefore, how to provide a nitrogen purge quick connector anti-slip safety card that can adapt to quick connectors with different axial spacings is a problem that technicians in this field urgently need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a nitrogen purge quick connector anti-detachment safety card and an installation method thereof, so as to solve the problem that the existing high-pressure hose is often dismantled and used for a long time, which will cause the internal rubber gasket to shrink and age, and the quick connector is easy to break free when nitrogen is quickly passed in the later stage, posing a safety risk.

[0005] To achieve the above-mentioned purpose, the basic scheme provided by the present invention is as follows: it includes a nitrogen pipeline, a high-pressure hose, a first quick connector and a second quick connector, the first quick connector is fixedly connected to the second quick connector, the nitrogen pipeline is arranged inside the first quick connector, the high-pressure hose is arranged inside the second quick connector, a lock handle is fixed on the side of the second quick connector, and an anti-slip assembly is provided on the outer side of the second quick connector and the nitrogen pipeline, and the anti-slip assembly includes a card plate, the card plate is fixed on the outer side of the second quick connector and the first quick connector, and the inner wall of the card plate is attached to the surface of the lock handle.

[0006] The principle and beneficial effect of the present invention are: using the clamping plate to limit the axial position of the second quick connector and the first quick connector to prevent the first quick connector from being disengaged from the second quick connector, and limiting the locking handle in the radial direction to prevent the locking handle from being disengaged.

[0007] Solution 2, which is the preferred basic solution, the clamping plate is an L-shaped steel plate relative to the clamping plate, an arc groove is provided on the clamping plate, and an annular clamping groove is provided on the surface of the second quick connector, and the arc groove is clamped with the annular clamping groove. The annular clamping groove and the arc groove cooperate with each other to provide positioning for the clamping plate, which is convenient for the installation of the clamping plate.

[0008] Solution three, which is the preferred basic solution, the anti-slip assembly also includes fixing bolts, which penetrate the cardboards on both sides, and are threadedly connected with fixing nuts, which are on the outer surface of the cardboard, and there are two sets of fixing bolts, which are axially symmetrically arranged with the symmetry axis of the cardboard as the symmetry axis. The symmetrically arranged bolts make the cardboard evenly stressed, and the spacing between the cardboards at both ends can be adjusted by adjusting the tightness of the nuts to adapt to different models of quick connectors, and are easy to install.

[0009] Solution 4, which is the preferred basic solution, is that the card plate is provided with a slide groove, a connecting plate is movably connected in the slide groove, a fixing bolt is threaded through the side of the slide groove, and the fixing bolt is pressed on the surface of the connecting plate. By adjusting the extension length of the connecting plate, the axial positioning size of the card plate can be adjusted to adapt to different models of quick connectors.

[0010] Solution 5: This is a preferred solution of Solution 4. The connection plate is provided with a row of limit grooves, the set bolts are threadedly connected to the limit blocks, the limit grooves are truncated cone-shaped grooves, and the limit blocks are truncated cones with holes on the side. The limit blocks cooperate with the limit grooves at different positions to adjust the extension length of the connection plate, so as to adapt to different types of quick connectors and withstand more axial forces.

[0011] Solution 6: This is a preferred solution of Solution 5. The limit block is provided with an auxiliary installation tool, which is a semi-threaded bolt with a conical top. Insert the auxiliary installation tool into the small hole on the side of the limit block and extend it into the slide groove. After the limit block is aligned with the fixing bolt, screw the fixing bolt into the limit block. After the limit block is installed, the auxiliary installation tool can be threaded through the card plate and pressed on the surface of the first quick connector to limit the rotation of the card plate.

[0012] Solution 7, a method for installing a nitrogen purge quick connector anti-detachment safety card comprises the following steps: S1. First, the first quick connector needs to be sleeved on the nitrogen pipeline, and then the second quick connector needs to be sleeved on the high-pressure hose, and then the lock handle is placed in the annular groove to position the first quick connector and the second quick connector; S2. Insert the clamping plate at this end of the second quick connector into the annular clamping groove, pass the fixing bolts through the clamping plates on both sides, and tighten the fixing nuts; S3. Insert the auxiliary installation tool into the small hole on the side of the limit block and extend it into the slide slot. After the limit block is aligned with the fixing bolt, screw the fixing bolt into the limit block. Do not screw the fixing bolt to the bottom and remove the auxiliary installation tool from the limit block. S4, insert the connecting plate into the slide slot; S5. Clamp the clamping plate on the outside of the nitrogen pipeline and insert the other end of the connecting plate into the slide slot. After passing the fixing bolts through the clamping plates on both sides, screw on the fixing nuts but do not tighten them. S6. Adjust the clamping plate at one end of the nitrogen pipeline to be close to the end face of the first quick connector, so that one limit groove corresponds to the limit block, tighten the fixing nut, and then tighten the fixing bolt; S7, threading the auxiliary installation tool through the clamping plate and pressing it onto the surface of the first quick connector to limit the rotation of the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a nitrogen purge quick connector anti-detachment safety card of the present invention. Figure 2 It is a front view of a nitrogen purge quick connector anti-detachment safety card of the present invention; Figure 3 It is a top view of a nitrogen purge quick connector anti-detachment safety card of the present invention; Figure 4 yes Figure 3 Sectional view at A in the middle; Figure 5 It is a structural diagram of the pallet; Figure 6 The invention discloses a schematic diagram of the installation of a limit block in a nitrogen purge quick connector anti-detachment safety card. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below through specific embodiments: The figure marks in the drawings of the specification include: 1-nitrogen pipeline, 2-high-pressure hose, 3-first quick connector, 4-second quick connector, 5-locking handle, 6-anti-slip assembly, 7-clamping plate, 71-arc groove, 8-annular clamping groove, 9-fixing bolt, 10-fixing nut, 11-slide groove, 12-connecting plate, 13-tightening bolt, 14-limiting groove, 15-limiting block, 16-auxiliary installation tool.

[0015] Example like Figures 1 to 6As shown: a nitrogen purge quick connector anti-detachment safety card, including a nitrogen pipeline 1, a high-pressure hose 2, a first quick connector 3 and a second quick connector 4, the first quick connector 3 and the second quick connector 4 are fixedly connected, the nitrogen pipeline 1 is arranged inside the first quick connector 3, the high-pressure hose 2 is arranged inside the second quick connector 4, a lock handle 5 is fixed on the side of the second quick connector 4, the second quick connector 4 and the surface of the nitrogen pipeline 1 are movably connected with an anti-detachment component 6, the anti-detachment component 6 includes a card plate 7, the card plate 7 is an L-shaped steel plate, the card plate 7 is provided with an arc groove 71, two oppositely arranged card plates 7 form a group, and each group of card plates 7 is connected by a The fixing bolt 9 of the card plate 7 is connected with the fixing nut 10, and the surface of the second quick connector 4 is provided with an annular groove 8, and the arc groove 71 of a group of card plates 7 near the end of the second quick connector 4 is engaged with the annular groove 8, and a group of card plates 7 near the end of the first quick connector 3 is sleeved on the outside of the nitrogen pipeline 1, and a slide groove 11 is provided on the card plate 7. The two groups of card plates 7 are connected by a connecting plate 12 inserted into the slide groove 11 and a fixing bolt 13 passing through the side of the slide groove 11. A row of truncated cone-shaped limiting grooves 14 are provided on the connecting plate 12, and the fixing bolt 13 is threadedly connected with a truncated cone-shaped limiting block 15, and a hole is provided on the side of the limiting block 15, and an auxiliary installation tool 16 is inserted in the hole.

[0016] The implementation method of this embodiment is as follows: the first quick connector 3 is sleeved on the nitrogen pipeline 1, the second quick connector 4 is sleeved on the high-pressure hose 2, the first quick connector 3 and the second quick connector 4 are docked, and the first quick connector 3 and the second quick connector 4 are positioned by pressing the locking handle 5 against the annular groove 8; a set of card plates 7 are inserted into the annular groove 8 at one end of the second quick connector 4, and the fixing bolts 9 are passed through the card plates 7 on both sides, and the fixing nuts 10 are tightened; the connecting plate 12 is inserted into the slide groove 11; another set of card plates 7 are clamped on the outside of the nitrogen pipeline 1, and the other end of the connecting plate 12 is also inserted into the slide groove 11, and the fixing bolts 9 are passed through the card plates 7 on both sides, and the fixing nuts 10 are screwed on but not tightened; after the card plate 7 at one end of the nitrogen pipeline 1 is adjusted to be close to the end face of the first quick connector 3, the fixing nuts 10 are tightened, and finally the fixing bolts 13 are tightened.

[0017] Example 2 A method for installing a nitrogen purge quick connector anti-detachment safety card: Step 1: First, the first quick connector 3 needs to be sleeved on the nitrogen pipeline 1, and then the second quick connector 4 needs to be sleeved on the high-pressure hose 2, and then the lock handle 5 is pressed against the annular groove 8 to position the first quick connector 3 and the second quick connector 4; Step 2: insert the arc groove 71 of the clamping plate 7 at this end of the second quick connector 4 into the annular clamping groove 8, pass the fixing bolts 9 through the clamping plates 7 on both sides, and tighten the fixing nuts 10; S3, insert the auxiliary installation tool 16 into the small hole on the side of the limit block 15, extend it into the slide groove 11, align the limit block 15 with the fixing bolt 13, screw the fixing bolt 13 into the limit block 15, do not screw the fixing bolt 13 to the bottom, and remove the auxiliary installation tool 16 from the limit block 15; S4, inserting the connecting plate 12 into the slide groove 11; S5, clamp the clamping plate 7 on the outside of the nitrogen pipeline 1, and insert the other end of the connecting plate 12 into the slide groove 11, after the fixing bolts 9 pass through the clamping plates 7 on both sides, screw on the fixing nuts 10 but do not tighten them; S6. After adjusting the clamping plate 7 at one end of the nitrogen pipeline 1 to be close to the end surface of the first quick connector 3, one of the limiting grooves 14 corresponds to the limiting block 15, tightening the fixing nut 10, and then tightening the fixing bolt 13.

[0018] S7 , thread the auxiliary installation tool 15 through the clamping plate 7 and press it onto the surface of the first quick connector 3 to limit the rotation of the clamping plate 7 .

[0019] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A nitrogen purge quick connector anti-detachment safety card, comprising a nitrogen pipeline (1), a high-pressure hose (2), a first quick connector (3) and a second quick connector (4), wherein the first quick connector (3) and the second quick connector (4) are fixedly connected, the nitrogen pipeline (1) is arranged inside the first quick connector (3), the high-pressure hose (2) is arranged inside the second quick connector (4), and a lock handle (5) is fixed on the side of the second quick connector (4), characterized in that: An anti-slip assembly (6) is provided on the outside of the second quick connector (4) and the nitrogen pipeline (1), and the anti-slip assembly (6) comprises a clamping plate (7), the clamping plate (7) is fixed on the outside of the second quick connector (4) and the first quick connector (3), and the inner wall of the clamping plate (7) is in contact with the surface of the lock handle (5).

2. The nitrogen purge quick connector anti-detachment safety card according to claim 1, characterized in that The clamping plate (7) is a relative L-shaped steel plate, and an arc-shaped groove (71) is provided on the clamping plate (7). An annular clamping groove (8) is provided on the surface of the second quick connector (4), and the arc-shaped groove (71) is clamped with the annular clamping groove (8).

3. The nitrogen purge quick connector anti-detachment safety card according to claim 1, characterized in that: The anti-drop assembly (6) further comprises fixing bolts (9), wherein the fixing bolts (9) penetrate the clamping plates (7) on both sides, wherein the fixing bolts (9) are threadedly connected to fixing nuts (10), wherein the fixing nuts (10) are on the outer surface of the clamping plate (7), and wherein the fixing bolts (9) are provided in two groups, wherein the fixing bolts (9) are axially symmetrically arranged with the axis of symmetry of the clamping plate (7) as the axis of symmetry.

4. The nitrogen purge quick connector anti-detachment safety card according to claim 1, characterized in that The clamping plate (7) is provided with a slide groove (11), a connecting plate (12) is movably connected inside the slide groove (11), a fixing bolt (13) is threadedly penetrated through the side surface of the slide groove (11), and the fixing bolt (13) is pressed against the surface of the connecting plate (12).

5. The nitrogen purge quick connector anti-detachment safety card according to claim 4, characterized in that The connection plate (12) is provided with a row of limit grooves (14), the fixing bolts (13) are threadedly connected to the limit blocks (15), the limit grooves (14) are truncated cone-shaped grooves, and the limit blocks (15) are truncated cones with holes on the side.

6. The nitrogen purge quick connector anti-detachment safety card according to claim 5, characterized in that The limit block (15) is provided with an auxiliary installation tool (16), and the auxiliary installation tool (16) is a semi-threaded bolt with a cone at the top. The thread of the auxiliary installation tool (16) passes through the clamping plate (7) and is pressed on the surface of the first quick connector (3).

7. The method for installing a nitrogen purge quick connector anti-detachment safety card according to claim 1, characterized in that: The steps include: S1. First, the first quick connector (3) needs to be sleeved on the nitrogen pipeline (1), and then the second quick connector (4) needs to be sleeved on the high-pressure hose (2), and then the lock handle (5) is pressed against the annular groove (8) to position the first quick connector (3) and the second quick connector (4); S2. Insert the clamping plate (7) at this end of the second quick connector (4) into the annular clamping groove (8), pass the fixing bolts (9) through the clamping plates (7) on both sides, and tighten the fixing nuts (10); S3, insert the auxiliary installation tool (16) into the small hole on the side of the limit block (15), extend it into the slide groove (11), align the limit block (15) with the fixing bolt (13), screw the fixing bolt (13) into the limit block (15), do not screw the fixing bolt (13) to the bottom, and remove the auxiliary installation tool (16) from the limit block (15); S4, inserting the connecting plate (12) into the slide groove (11); S5. Clamp the clamping plate (7) onto the outside of the nitrogen pipeline (1), insert the other end of the connecting plate (12) into the slide groove (11), pass the fixing bolts (9) through the clamping plates (7) on both sides, and then screw on the fixing nuts (10) but do not tighten them; S6. After adjusting the clamping plate (7) at one end of the nitrogen pipeline (1) to be in close contact with the end surface of the first quick connector (3), one of the limit grooves (14) corresponds to the limit block (15), tightening the fixing nut (10), and then tightening the fixing bolt (13); S7. The auxiliary installation tool (16) is threadedly passed through the clamping plate (7) and pressed onto the surface of the first quick connector (3) to limit the rotation of the clamping plate (7).

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