A leakage detection device for online fault diagnosis of a valve

Abstract

The application discloses to the technical field of valve leakage detection, specifically a kind of leakage detection device for valve online fault diagnosis including valve body, two cover connection components, stabilizing component, compression assembly and limiting component, two sides of valve body are respectively equipped with communication pipeline by flange plate installation, several flange bolts are horizontally inserted and connected on flange plate, by respectively setting the detachable cover connection component of flange structure at the connection of valve body and communication pipeline, leakage gas is collected in time at the connection of flange plate of cooperation conveying pipe, and the connection of flange plate is compressed and strengthened, under the auxiliary action of first sealing gasket, sealing effect is good, is less influenced by outside, corresponding speed is fast when leaking, and operation safety is higher, and under the auxiliary action of limiting component, the connection of collection cover and flange bolt is bidirectionally limited, improves the respective installation strength of collection cover and flange plate, and it is simple to operate and convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve leakage detection, in particular to a leakage detection device for online fault diagnosis of a valve. BACKGROUND

[0002] Valves are control components in fluid conveying systems, with functions such as shut-off, regulation, flow guidance, anti-backflow, pressure stabilization, shunt or overflow pressure relief, etc. High-risk gas valves need to be installed with corresponding gas leakage detection modules around the valve to discover and handle problems in time when in use.

[0003] Valve leakage often occurs at pipe connections, and connection looseness and aging of sealing elements can all cause this problem. Reminder sensing devices for valve leakage are mostly arranged on one side of the pipe, and because of the influence of the external environment, detection may not be timely, which can cause greater safety accidents and is extremely inconvenient to use. SUMMARY

[0004] The present application aims to provide a leakage detection device for online fault diagnosis of a valve to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a leakage detection device for online fault diagnosis of a valve, comprising:

[0006] A valve body is provided with a communication pipeline on both sides through flanges, a plurality of flange bolts are horizontally inserted on the flanges, and a plurality of flange nuts are provided on one side of the flange through the threaded sleeve.

[0007] Two cover connection assemblies are arranged on one side of the flange of the valve body, and each cover connection assembly comprises two collection covers.

[0008] A stabilizing assembly is arranged on one side of the two collection covers, and the stabilizing assembly comprises an arc-shaped sliding seat and an arc-shaped mounting plate.

[0009] A pressing assembly is arranged on one side between the two collection covers, and the pressing assembly comprises a pressing ring.

[0010] A limiting assembly comprises a plurality of gear sleeves and a plurality of limiting rods, the plurality of gear sleeves are arranged on one side of the pressing ring, and the plurality of limiting rods are arranged on one side of the flange bolts and the flange nuts.

[0011] Preferably, the two collecting covers are both provided in a semi-circular structure, and the two collecting covers are respectively sleeved with the flange plates of the valve body and the communication pipeline; the upper end of one side of the collecting cover is provided with a pipe joint which is in communication with the collecting cover; the pipe joint is provided with a conveying pipe which is inserted and sealed on one side of the pipe joint; and the conveying pipe is provided on one side of the control box of the valve body.

[0012] Preferably, the collecting cover is provided with a groove; the two collecting covers are respectively provided with a first sealing gasket and a second sealing gasket which are inserted in the grooves; the length of the first sealing gasket is smaller than that of the second sealing gasket; and the second sealing gasket is inserted in the groove of the first sealing gasket.

[0013] Preferably, the two collecting covers are respectively provided with two butt grooves and two butt rods which are symmetrically arranged on the side in contact with each other.

[0014] Preferably, the two collecting covers are respectively provided with an arc-shaped sliding seat on the side away from the butt rod; the arc-shaped sliding seat is provided with an arc-shaped groove which penetrates through the arc-shaped sliding seat; two arc-shaped mounting plates are respectively inserted in the two arc-shaped grooves; the collecting cover is provided with a positioning threaded hole between the two arc-shaped sliding seats; the arc-shaped mounting plate is provided with a locking bolt on one side; the upper end of the arc-shaped groove is provided with a sliding groove which penetrates through the arc-shaped sliding seat; the width of the sliding groove is greater than the diameter of the locking bolt; the arc-shaped mounting plate is in contact with the collecting cover on the opposite side through the arc-shaped groove on one side; and the locking bolt of the arc-shaped mounting plate is inserted in the positioning threaded hole of the collecting cover on the opposite side through the thread.

[0015] Preferably, the diameter of one side of the collecting cover is smaller than that of the flange plate, and the diameter of the other side of the collecting cover is greater than that of the flange plate; the two collecting covers are respectively provided with a combined thread on the side with a greater diameter than that of the flange plate; the outer circumferential surface of the compression ring is provided with a compression thread; and the compression ring is connected with the combined threads of the two collecting covers through the compression thread.

[0016] Preferably, the compression ring is provided with an annular groove on the side close to the flange plate; and the first sealing gasket is inserted in the annular groove.

[0017] Preferably, the compression ring is provided with a pushing groove on the side close to the flange bolt; the pushing groove is horizontally provided with a positioning shaft; a plurality of gear sleeves are movably sleeved with the positioning shaft; the gear sleeve is obliquely provided with a pushing rod on one side; the pushing rod is provided with a spring groove; the spring groove is movably inserted with a positioning rod; the positioning rod is provided with a positioning spring through a pressing plate on one side in the spring groove; the outer circumferential surface of the positioning shaft is symmetrically provided with two positioning grooves; the positioning rod is respectively provided with the spring groove on both sides; and the positioning rod is inserted in one side of the spring groove and inserted in one side of the positioning groove.

[0018] Preferably, a guide groove is vertically arranged on one side of the dial groove, and a plurality of limiting rods are vertically movably inserted into the guide groove, a plurality of connecting tooth grooves are symmetrically arranged on one side of the limiting rod close to the gear sleeve, and the teeth on one side of the gear sleeve are connected with the connecting tooth grooves on one side of the limiting rod.

[0019] Preferably, a plurality of limiting grooves are symmetrically arranged on one side of the flange nut close to the pressing ring, and the lower end of the limiting rod is inserted into the limiting groove through the butt joint hole.

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] By arranging the detachable cover assembly on the flange structure connected with the valve body and the communication pipeline, the leakage gas at the connection of the flange plate and the conveying pipe can be collected in time, the connection of the flange plate is compressed and strengthened, the sealing effect is good under the auxiliary action of the first sealing gasket, the influence from the outside is less, the leakage speed is fast, the operation safety is higher, and under the auxiliary action of the limiting assembly, the connection between the collecting cover and the flange bolt is bidirectionally limited, the installation strength of the collecting cover and the flange plate is improved, and the operation is simple and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present application;

[0023] Figure 2 It is a schematic diagram of A part of the present application; Figure 1

[0024] Figure 3 It is a schematic diagram of B part of the present application; Figure 2

[0025] Figure 4 It is a schematic diagram of the first perspective view of the three-dimensional structure of the present application;

[0026] Figure 5 It is a schematic diagram of the second perspective view of the three-dimensional structure of the present application;

[0027] Figure 6 It is a schematic diagram of the collecting cover structure of the present application;

[0028] Figure 7 It is a schematic diagram of the pressing ring structure of the present application;

[0029] Figure 8 It is a schematic diagram of the connecting structure of the limiting assembly of the present application.

[0030] ​​In the figure: valve body 1, communication pipeline 2, flange bolt 3, flange nut 4, collection cover 5, first sealing gasket 6, second sealing gasket 7, compression ring 8, push slot 9, positioning shaft 10, gear cover 11, positioning slot 12, push rod 13, spring slot 14, positioning rod 15, positioning spring 16, limiting rod 17, connecting tooth groove 18, limiting slot 19, butt joint hole 20, butt joint rod 21, arc sliding seat 22, arc slot 23, arc mounting plate 24, locking bolt 25, conveying pipe 26. Embodiments

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Please refer to the drawings Figures 1-8 The present application provides the following five preferred embodiments. Embodiments

[0033] A leakage detection device for online fault diagnosis of a valve, the leakage detection device comprising:

[0034] A valve body 1, the valve body 1 is provided with a communication pipeline 2 on both sides through a flange plate, a plurality of flange bolts 3 are horizontally inserted and connected on the flange plate, and a flange nut 4 is connected through a threaded sleeve on one side of the flange plate penetrated by the flange bolts 3;

[0035] Two cover connection assemblies are provided on one side of the valve body 1, each cover connection assembly comprises two collection covers 5, the two collection covers 5 are both provided in a semicircular structure, and the two collection covers 5 are connected to the flange plates of the valve body 1 and the communication pipeline 2, respectively; a pipe joint is arranged at the center of the upper end of one collection cover 5 and is in communication with the collection cover 5; a conveying pipe 26 is inserted and connected to one side of the pipe joint; the conveying pipe 26 is inserted and connected to one side of a control box of the valve body 1; a recess is formed in each collection cover 5; and a first sealing gasket 6 and a second sealing gasket 7 are inserted and connected in the recesses of the two collection covers 5, respectively;

[0036] A stabilizing assembly is arranged on one side of the two collection covers 5, and the stabilizing assembly comprises an arc-shaped sliding seat 22 and an arc-shaped mounting plate 24; two butt joint grooves and two butt joint rods 21 are symmetrically arranged on one side of each collection cover 5; the butt joint rods 21 are inserted and connected in the butt joint grooves, respectively; the arc-shaped sliding seats 22 are arranged on the sides of the two collection covers 5 away from the butt joint rods 21; the arc-shaped grooves 23 are formed in the arc-shaped sliding seats 22; the arc-shaped mounting plates 24 are movably inserted in the arc-shaped grooves 23; and positioning threaded holes are formed in the collection covers 5 between the arc-shaped sliding seats 22.

[0037] The compression assembly is arranged on one side between the two collecting covers 5, the compression assembly comprises a compression ring 8, the two collecting covers 5 are provided with combined threads on the side with a diameter larger than the flange plate, and the outer circumferential surface of the compression ring 8 is provided with compression threads, and the compression ring 8 is connected to the combined threads of the two collecting covers 5 through the compression threads.

[0038] The limiting assembly comprises a plurality of gear sleeves 11 and a plurality of limiting rods 17, the plurality of gear sleeves 11 are arranged on one side of the compression ring 8, and one side of the plurality of limiting rods 17 is respectively inserted into one side of the flange bolt 3 and the flange nut 4, a driving groove 9 is formed on one side of the compression ring 8 close to the flange bolt 3, a positioning shaft 10 is horizontally arranged in the driving groove 9, the plurality of gear sleeves 11 are movably sleeved on the positioning shaft 10, a driving rod 13 is obliquely arranged on one side of the gear sleeve 11, a spring groove 14 is formed in the driving rod 13, a positioning rod 15 is movably inserted into the spring groove 14, the positioning rod 15 is provided with a positioning spring 16 through a pressing sleeve on one side in the spring groove 14, two positioning grooves 12 are symmetrically arranged on the outer circumferential surface of the positioning shaft 10, the positioning rod 15 penetrates through the spring groove 14 on one side and is inserted into one side positioning groove 12 on the other side, a guide groove is vertically formed in one side of the driving groove 9, and the plurality of limiting rods 17 are vertically movably inserted into the guide groove, a plurality of connecting tooth grooves 18 are symmetrically formed on one side of the limiting rod 17 close to the gear sleeve 11, and the teeth on one side of the gear sleeve 11 are engaged with the connecting tooth grooves 18 on one side of the limiting rod 17, a butt joint hole 20 is formed in one side of the flange nut 4 close to the compression ring 8, and a plurality of limiting grooves 19 are symmetrically formed in one side of the flange bolt 3 inserted into the flange nut 4, and the lower end of the limiting rod 17 penetrates through the butt joint hole 20 and is inserted into one side limiting groove 19. Embodiment

[0039] On the basis of the first embodiment, the length of the first sealing gasket 6 is smaller than the length of the second sealing gasket 7, and the second sealing gasket 7 is inserted into the groove of the first sealing gasket 6 on one side, so that when the two collecting covers 5 are spliced and installed, the sealing effect can be ensured. Embodiment

[0040] On the basis of the second embodiment, the compression ring 8 is provided with an annular groove on one side close to the flange plate, and the first sealing gasket 6 is inserted into the annular groove on one side, so that when the collecting cover 5 is connected to the compression ring 8, the first sealing gasket 6 is inserted into the annular groove of the compression ring 8 to seal the connecting joint of the compression ring 8 and the collecting cover 5. Embodiment

[0041] On the basis of the third embodiment, the diameter of one side of the collecting cover 5 is less than the flange plate, and the diameter of the other side of the collecting cover 5 is greater than the flange plate. When the compression ring 8 is screwed with the two collecting covers 5, the collecting cover 5 is compressed between the flange plate and the compression ring 8, and the sealing effect is achieved in cooperation with the first sealing gasket 6. EMBODIMENT

[0042] On the basis of the fourth embodiment, the arc-shaped mounting plate 24 is provided with a locking bolt 25 on one side, and a sliding groove is formed in the upper end of the arc-shaped slot 23 and penetrates the arc-shaped sliding seat 22. The width of the sliding groove is greater than the diameter of the locking bolt 25. The arc-shaped mounting plate 24 is arranged in contact with the opposite collecting cover 5 through the arc-shaped slot 23 on one side, and the locking bolt 25 of the arc-shaped mounting plate 24 is arranged in the positioning threaded hole of the opposite collecting cover 5 through threaded insertion. When the two collecting covers 5 are installed, the arc-shaped mounting plates 24 of the two collecting covers 5 are connected with the opposite collecting cover 5 through the locking bolt 25, respectively, so that the two collecting covers 5 are quickly assembled and positioned. EMBODIMENT

[0043] On the basis of the fifth embodiment, the connection mode between the two collecting covers 5 can be that the two collecting covers 5 are connected by welding after butt joint of the butt joint rod 21, so that the use strength of the collecting cover 5 is improved.

[0044] In use, the two collecting covers 5 are respectively covered on the two flange plates on one side, and are connected in position through the two butt joint rods 21. Then, the arc-shaped mounting plate 24 is rotated to the side of the other collecting cover 5, and is fixedly connected through the locking bolt 25. After the connection is completed, the two collecting covers 5 are stably installed under the action of the arc-shaped structures of the arc-shaped sliding seat 22 and the arc-shaped mounting plate 24. Then, the compression ring 8 is connected with the two collecting covers 5 through the compression thread, so that the gap between the two flange plates is reduced, and the connection sealing between the collecting cover 5 and the flange plate is ensured. Then, the positioning rod 15 is pulled out in turn to make the side of the driving rod 13 away from the positioning groove 12, the driving rod 13 is rotated, the driving rod 13 drives the limiting rod 17 to move downward, the lower end of the limiting rod 17 penetrates the butt joint hole 20 and is inserted into the limiting groove 19 of the flange bolt 3, so that the rotation of the flange bolt 3 and the flange nut 4 is limited, the stability of the installation of the valve body 1 is improved, and the possibility of leakage is reduced. When leakage occurs inevitably, the gas enters the collecting cover 5, then contacts the control box of the valve body 1 through the conveying pipe 26, the sensing module is started, alarm processing is performed, and the staff is prompted to come for maintenance.

[0045] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A leakage detection device for online fault diagnosis of valves, characterized in that: The leakage detection device includes: The valve body (1) has connecting pipes (2) installed on both sides of the valve body (1) via flanges. Several flange bolts (3) are horizontally inserted on the flanges. Several flange bolts (3) pass through one side of the flange and are threadedly fitted with flange nuts (4). Two cover assembly, each of which is located on a flange on one side of the valve body (1), and the cover assembly includes two collection covers (5). The stabilizing component is located on one side of the two collection hoods (5) and includes an arc-shaped slide (22) and an arc-shaped mounting plate (24). A clamping assembly is located on one side between two collection hoods (5), and the clamping assembly includes a clamping ring (8). The limiting assembly includes several gear sleeves (11) and several limiting rods (17). The several gear sleeves (11) are respectively located on one side of the clamping ring (8), and the several limiting rods (17) are respectively connected to the flange bolts (3) and the flange nuts (4) on one side. The collection cover (5) is provided with a groove. The first sealing gasket (6) and the second sealing gasket (7) are respectively inserted into the groove of the two collection covers (5). The length of the first sealing gasket (6) is less than the length of the second sealing gasket (7). The second sealing gasket (7) is inserted into the groove of the first sealing gasket (6) on one side. Two docking slots and two docking rods (21) are symmetrically opened on the contact side of the two collection covers (5), and the docking rods (21) are respectively inserted into the two docking slots; Both collection covers (5) are provided with arc-shaped slides (22) on the side away from the docking rod (21). Arc-shaped grooves (23) are opened through the arc-shaped slides (22). Two arc-shaped mounting plates (24) are respectively movably inserted into the two arc-shaped grooves (23). The collection covers (5) are provided with positioning threaded holes between the two arc-shaped slides (22). Locking bolts (25) are inserted into one side of the arc-shaped mounting plates (24). The upper end of the arc-shaped groove (23) is provided with a sliding groove through the arc-shaped slide (22). The width of the sliding groove is greater than the diameter of the locking bolt (25). The arc-shaped mounting plate (24) is connected to the collection cover (5) on the opposite side through the arc-shaped groove (23). The locking bolts (25) of the arc-shaped mounting plate (24) are connected to the positioning threaded holes of the collection cover (5) on the opposite side through the thread. The diameter of one side of the collection cover (5) is smaller than that of the flange, and the diameter of the other side is larger than that of the flange. Both collection covers (5) are provided with combined threads on the side with the diameter larger than that of the flange. The outer circumference of the clamping ring (8) is provided with clamping threads. The clamping ring (8) is connected to the combined threads of the two collection covers (5) respectively through the clamping threads.

2. The leakage detection device for online valve fault diagnosis according to claim 1, characterized in that: Both collection covers (5) are semi-circular structures. The two collection covers (5) are respectively fitted with the flanges of the valve body (1) and the connecting pipe (2). A pipe joint is opened at the center of the upper end of one collection cover (5). The pipe joint is connected to the inside of the collection cover (5). A conveying pipe (26) is sealed and inserted on one side of the pipe joint. The conveying pipe (26) is respectively inserted into the control box of the valve body (1) on one side.

3. A leakage detection device for online valve fault diagnosis according to claim 2, characterized in that: The clamping ring (8) has an annular groove on the side near the flange, and the first sealing gasket (6) is inserted into the annular groove on one side.

4. A leakage detection device for online valve fault diagnosis according to claim 3, characterized in that: The clamping ring (8) is provided with a moving groove (9) on the side near the flange bolt (3). A positioning shaft (10) is provided horizontally in the moving groove (9). Several gear sleeves (11) are respectively movably sleeved on the positioning shaft (10). A moving rod (13) is provided inclined on one side of the gear sleeve (11). A spring groove (14) is provided in the moving rod (13). A positioning rod (15) is movably inserted in the spring groove (14). A positioning spring (16) is sleeved on one side of the positioning rod (15) placed in the spring groove (14) through a pressure plate. Two positioning grooves (12) are symmetrically provided on the outer circumference of the positioning shaft (10). The positioning rod (15) is provided on both sides of the spring groove (14) respectively, and the positioning rod (15) is inserted into the positioning groove (12) on one side of the spring groove (14).

5. A leakage detection device for online valve fault diagnosis according to claim 4, characterized in that: A guide groove is vertically opened on one side of the actuating groove (9), and several limiting rods (17) are vertically and movably inserted into the guide groove. Several connecting tooth grooves (18) are symmetrically opened on the side of the limiting rod (17) near the gear sleeve (11), and the teeth on one side of the gear sleeve (11) are meshed with the connecting tooth grooves (18) on one side of the limiting rod (17).

6. A leakage detection device for online valve fault diagnosis according to claim 5, characterized in that: The flange nut (4) has a through hole (20) on the side near the clamping ring (8). The flange bolt (3) is inserted into the flange nut (4) and a number of limiting grooves (19) are symmetrically provided on the side. The lower end of the limiting rod (17) is inserted into the limiting groove (19) on the side through the through hole (20).

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