Water supply pipe connection sealing test equipment and test method

Abstract

The invention discloses water supply pipe connection sealing test equipment and a test method, and relates to the field of water supply pipe detection. The water supply pipe connection sealing test equipment comprises a sealing unit, a pneumatic connection unit and an air exhaust unit. According to the water supply pipe connection sealing test equipment and test method, a sealing chamber is formed on the outer surface of the water pipe connection part through the sealing unit, and the pneumatic connection unit is subjected to air exhaust through the air exhaust unit, so that the first shell and the second shell are tightly connected, and then water is injected into the sealing chamber; the interior of the sealing cavity is vacuumized through the air exhaust unit, then whether bubbles emerge at the joint of the water pipe is observed, so that whether the water pipe has the sealing problem or not is rapidly detected, operation is simple and effective, water does not need to be introduced into the water pipe, rapid detection can be conveniently conducted after the water pipe is connected and sealed, and meanwhile rapid disassembly and assembly are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of water supply pipe detection, in particular to a water supply pipe connection sealing test device and a test method. Background Art

[0002] When arranging or repairing water supply pipes, due to the limited basic length of the pipes, joints are often required to connect the pipes so that the entire pipeline layout meets the usage requirements. When pipes are connected through joints, the mainstream means include seal connection, glue connection and hot melt connection. Regardless of the connection method, it is easy for the joints to fail to meet the sealing standards due to the limitations of the operating environment, operating technology and materials. Therefore, a sealing test is required at each connection joint.

[0003] The traditional sealing test method is to pass water through the interior of the pipeline after assembly, use fluid pressure, and then observe whether there is any leakage at the joint; however, in actual application, if the water test is carried out after the pipeline is completely arranged, once the sealing does not meet the standard, subsequent rework and repair will be more difficult and the water needs to be drained. In addition, pipes are installed at both ends of the connection, which is difficult to move. Usually, only secondary sealing treatment can be performed, and there will be problems of secondary leakage in the later stage. For this reason, a water supply pipe connection sealing test equipment and test method are specially provided. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a water supply pipe connection sealing test equipment and test method, which solves the problem of traditional water flow testing method. Once the sealing does not meet the standards, subsequent rework and repair will be more difficult and the water needs to be drained. In addition, pipes have been installed at both ends of the connection, which is difficult to move. Usually, only secondary sealing treatment can be performed, and there will be problems of secondary leakage in the later stage.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A water supply pipe connection sealing test device, comprising: The sealing unit comprises a first shell and a second shell arranged opposite to each other, wherein the first shell and the second shell are installed on the outer wall of the water supply pipe to form a sealed chamber; a pneumatic connection unit, which is disposed between the first housing and the second housing; An air extraction unit, the air extraction unit comprising: A vacuum pump, which is fixedly arranged on both sides of the first shell; Improved four-way valve, which is installed at the end of the vacuum cylinder.

[0006] The vacuum cylinder is connected to the pneumatic connection unit through a modified four-way valve, and is used for sealing and fixing the first shell and the second shell.

[0007] The vacuum cylinder is connected to the interior of the sealing unit through an improved four-way valve and is used to vacuum the interior of the sealing unit.

[0008] Preferably, the sealing unit further comprises: a sealing assembly disposed between the first shell and the second shell; Side tempered glass, which is fixedly arranged on the sides of the first shell and the second shell; A top tempered glass is fixedly arranged in the middle of the upper surface of the second shell; a pressure gauge fixedly mounted on one side of the top of the second housing; The water supply pipe is fixedly installed on the other side of the top of the second shell, and a sealing valve is installed on the outer surface of the water supply pipe.

[0009] Preferably, the sealing assembly comprises: Semicircular slots are provided at both ends of the first shell and the second shell; A semicircular sealing ring is installed inside the semicircular slot; An assembly groove is provided on the top of the first shell; An assembly sealing strip is installed in the middle, and both ends of the assembly sealing strip are fixedly connected to the semicircular sealing rings on both sides respectively; The assembly strip is integrally formed at the bottom of the second shell and is movably inserted into the assembly sealing strip.

[0010] Preferably, the pneumatic connection unit includes: Gas pressure rod; A fixing stud, which is fixedly welded to one end of the gas pressure rod and is threadedly connected to the top of the second shell; an air guide tube installed between the two sets of gas pressure rods; The connecting portion is arranged at the other end of the gas pressure rod and is fixedly installed with the first shell.

[0011] Preferably, the connecting portion includes: A connecting stud, which is fixedly welded to the end of the gas pressure rod output shaft; A conical sealing plug fixedly disposed on the outer surface of the gas pressure rod output shaft; A threaded fastener is threadedly connected to the outer surface of the connecting stud.

[0012] The gas pressure rod output shaft passes through the lower surface of the first shell, and the threaded fixing piece is installed outside the first shell.

[0013] Preferably, an assembly sealing groove is provided at the bottom of the first shell, both ends of the assembly sealing groove are tapered, the tapered sealing plug is movably inserted into the inner top of the assembly sealing groove, and a sealing rubber gasket is fixedly provided at the end of the threaded fixing piece, and the sealing rubber gasket is movably inserted into the inner bottom of the assembly sealing groove.

[0014] Preferably, a fixed clamp is installed between the vacuum cylinder and the outer wall of the second shell, a piston is slidably provided at one end of the vacuum cylinder, and connecting handles are fixedly provided at the outer ends of the two groups of pistons. Two groups of one-way valves are installed at the other end of the vacuum cylinder, one of the one-way valves is connected to the outside, and the other group of the one-way valves is connected to the improved four-way valve.

[0015] Preferably, the improved four-way valve comprises: a valve seat fixedly disposed on the outer wall of the second shell; A valve core member rotatably disposed inside the valve seat; Two sets of output ends are integrally formed on the outer wall of the valve seat, and the outer ends of the two sets of output ends are connected; The two sets of input ends are integrally formed on the outer wall of the valve seat, and the two sets of input ends are perpendicular to each other.

[0016] Preferably, the output ends are connected to a group of one-way valves, one group of the input ends is connected to the interior of the second shell, and the other group of the input ends is connected to the air duct.

[0017] Preferably, a water supply pipe connection sealing test method comprises the following steps: Step 1: A sealed chamber is formed on the outer surface of the water supply pipe connection through a sealing unit; Step 2: Fill the sealed chamber with water so that the connection of the water supply pipe is submerged in water; Step 3: Use the vacuum unit to evacuate the inside of the sealed chamber, and then observe whether there are bubbles coming out of the water pipe connection.

[0018] The present invention discloses a water supply pipe connection sealing test device and test method, which have the following beneficial effects: 1. The water supply pipe connection sealing test equipment is provided with an air extraction unit. When in use, the air is first extracted from the inside of the gas pressure rod through the air extraction unit to cause the gas pressure rod to contract, thereby clamping the first shell and the second shell on the outer wall of the pipe to form a sealed chamber. Then, the air is extracted from the inside of the sealing unit through the air extraction unit to form a negative pressure inside the sealing unit, thereby realizing sealing detection and facilitating operation and use. 2. For the water supply pipe connection sealing test equipment, install the second shell from the top on the outer surface of the water pipe, and then install the first shell from the bottom on the outer surface of the water pipe, and make the output shaft of the gas pressure rod pass downward through the assembly sealing groove. At this time, screw the threaded fastener to the outer surface of the connecting stud, so that the conical sealing plug and the sealing gasket are respectively inserted into the inside of the two ends of the assembly sealing groove, completing the sealing connection and preventing leakage at the connection; 3. The water supply pipe connection sealing test method forms a sealed chamber on the outer surface of the water pipe connection through a sealing unit, and then injects water into the sealed chamber so that the water supply pipe connection is immersed in water. The inside of the sealed chamber is then vacuumed by the exhaust unit, and then the water pipe connection is observed to see whether there are bubbles. This allows for a quick test of whether there is a sealing problem with the water pipe. The operation is simple and effective, and there is no need to pass water through the water pipe, making it convenient for quick testing after the water pipe connection is sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall bottom structure of the present invention; Figure 3 This is an exploded view of the first shell and the second shell of the present invention; Figure 4 This is a schematic diagram of the internal structure of the first shell of the present invention; Figure 5 For the present invention Figure 4 A magnified view of the structure of part A; Figure 6 This is a schematic diagram of the outer surface structure of the second shell of the present invention; Figure 7 This is a schematic diagram of the back structure of the second housing of the present invention; Figure 8 This is a schematic diagram of the outer surface structure of the vacuum cylinder of the present invention; Figure 9 This is a schematic diagram of the structure of the improved four-way valve of the present invention.

[0021] In the figure: 1. Sealing unit; 11. First shell; 12. Second shell; 13. Side tempered glass; 14. Semicircular groove; 15. Semicircular sealing ring; 16. Assembly groove; 17. Assembly sealing strip; 18. Assembly sealing groove; 19. Assembly strip; 110. Top tempered glass; 111. Pressure gauge; 112. Water supply pipe; 2. Vacuum unit; 21. Vacuum cylinder; 22. Connecting handle; 23. Improved four-way valve; 231. Valve seat; 232. Valve core member; 233. Output end; 234. Input end; 24. Piston member; 25. Fixing clamp; 26. One-way valve; 3. Pneumatic connection unit; 31. Pneumatic rod; 32. Air guide tube; 33. Fixing stud; 34. Connecting stud; 35. Conical sealing plug; 36. Threaded fixing member; 37. Sealing gasket. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The embodiment of the present application solves the problem of traditional water flow testing method by providing a water supply pipe connection sealing test device and test method. Once the sealing fails to meet the standard, subsequent rework and repair will be more difficult and the water needs to be drained. In addition, pipes are installed at both ends of the connection, which is difficult to move. Usually, only secondary sealing treatment can be performed, and there will be problems of secondary leakage in the later stage.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] The embodiments of the present invention disclose water supply pipe connection sealing test equipment and a test method.

[0026] According to the attached Figure 1-9 As shown, it includes a sealing unit 1, an air extraction unit 2 and a pneumatic connection unit 3.

[0027] The sealing unit 1 includes a first shell 11 and a second shell 12 arranged opposite to each other. The first shell 11 and the second shell 12 are installed on the outer wall of the water supply pipe to form a sealed chamber. The pneumatic connection unit 3 is provided between the first housing 11 and the second housing 12; The air extraction unit 2 includes an air extraction cylinder 21 and a modified four-way valve 23. The air extraction cylinder 21 is fixedly arranged on both sides of the first housing 11; the modified four-way valve 23 is installed at the end of the air extraction cylinder 21; The vacuum cylinder 21 is connected to the pneumatic connection unit 3 through the improved four-way valve 23, and is used to seal and fix the first shell 11 and the second shell 12; the vacuum cylinder 21 is connected to the inside of the sealing unit 1 through the improved four-way valve 23, and is used to vacuum the inside of the sealing unit 1.

[0028] The sealing unit 1 further comprises: A sealing assembly is provided between the first shell 11 and the second shell 12; Side tempered glass 13, which is fixedly arranged on the side surfaces of the first shell 11 and the second shell 12; A top tempered glass 110 is fixedly disposed in the middle of the upper surface of the second housing 12; A pressure gauge 111 is fixedly mounted on one side of the top of the second housing 12; The water supply pipe 112 is fixedly installed on the other side of the top of the second shell 12, and a sealing valve is installed on the outer surface of the water supply pipe 112.

[0029] The sealing assembly includes: Semicircular slots 14 are provided at both ends of the first shell 11 and the second shell 12; A semicircular sealing ring 15 is installed inside the semicircular groove 14; An assembly groove 16 is provided on the top of the first housing 11; The assembly sealing strip 17 is installed in the middle, and the two ends of the assembly sealing strip 17 are fixedly connected to the semicircular sealing rings 15 on both sides; The assembly strip 19 is integrally formed at the bottom of the second housing 12 and is movably inserted into the assembly sealing strip 17 .

[0030] The pneumatic connection unit 3 comprises: Gas pressure rod 31; A fixing stud 33 is fixedly welded to one end of the gas pressure rod 31 and is threadedly connected to the top of the second housing 12; An air guide tube 32 is installed between the two sets of gas pressure rods 31; The connecting portion is provided at the other end of the gas pressure rod 31 and is fixedly mounted to the first housing 11 .

[0031] The connection part includes: A connecting stud 34 is fixedly welded to the end of the output shaft of the gas pressure rod 31; A conical sealing plug 35 is fixedly mounted on the outer surface of the output shaft of the gas pressure rod 31; a threaded fixing member 36 threadedly connected to the outer surface of the connecting stud 34; The output shaft of the gas rod 31 passes through the lower surface of the first housing 11 , and the threaded fastener 36 is installed outside the first housing 11 .

[0032] An assembly sealing groove 18 is provided at the bottom of the first shell 11. Both ends of the assembly sealing groove 18 are tapered. The tapered sealing plug 35 is movably inserted into the inner top of the assembly sealing groove 18. A sealing rubber gasket 37 is fixedly provided at the end of the threaded fixing piece 36. The sealing rubber gasket 37 is movably inserted into the inner bottom of the assembly sealing groove 18.

[0033] A fixing clamp 25 is installed between the vacuum cylinder 21 and the outer wall of the second shell 12. A piston member 24 is slidably provided at one end of the vacuum cylinder 21. The outer ends of the two groups of piston members 24 are fixedly provided with connecting handles 22. Two groups of one-way valves 26 are installed at the other end of the vacuum cylinder 21. One group of one-way valves 26 is connected to the outside, and the other group of one-way valves 26 is connected to the improved four-way valve 23.

[0034] The improved four-way valve 23 includes: The valve seat 231 is fixedly mounted on the outer wall of the second housing 12; The valve core 232 is rotatably disposed inside the valve seat 231; Two sets of output ends 233 are integrally formed on the outer wall of the valve seat 231, and the outer ends of the two sets of output ends 233 are connected; The two sets of input ends 234 are integrally formed on the outer wall of the valve seat 231 , and the two sets of input ends 234 are perpendicular to each other.

[0035] The output end 233 is connected to a set of one-way valves 26 , a set of input ends 234 is communicated with the interior of the second housing 12 , and another set of input ends 234 is connected to the air guide pipe 32 .

[0036] A water supply pipe connection sealing test method comprises the following steps: Step 1: A sealed chamber is formed on the outer surface of the water supply pipe connection by the sealing unit 1; Step 2: Fill the sealed chamber with water so that the connection of the water supply pipe is submerged in water; Step 3: Vacuum the inside of the sealed chamber through the vacuum unit 2, and then observe whether there are bubbles coming out of the water pipe connection.

[0037] Working principle: When using the device, first wrap raw tape around the outer surfaces of both ends of the water pipe connection to be tested, with the spacing between the two sets of raw tape equal to the width of the first shell 11. Then, the second shell 12 is installed on the outer surface of the water pipe from the top, and then the first shell 11 is installed on the outer surface of the water pipe from the bottom, and the output shaft of the pneumatic rod 31 is downwardly passed through the assembly sealing groove 18. At this time, the threaded fastener 36 is screwed to the outer surface of the connecting stud 34, so that the conical sealing plug 35 and the sealing gasket 37 are respectively inserted into the two ends of the assembly sealing groove 18 to complete the sealed connection.

[0038] At this time, by rotating the valve core piece 232, the air guide tube 32 is connected to a set of output ends 233 through the valve core piece 232. At this time, by pulling the connecting handle 22 outward, the connecting handle 22 drives the two sets of piston members 24 to slide outward, so that negative pressure is formed inside the air pump 21. At this time, the air inside the pneumatic rod 31 enters the valve core piece 232 through the air guide tube 32, and then enters the air pump 21 through a set of one-way valves 26. Then, the connecting handle 22 is pushed inward, causing the piston member 24 to slide into the interior of the air pump 21. At this time, positive pressure is formed inside the vacuum cylinder 21, so that the air inside it is discharged into the outside air through another set of one-way valves 26. This is repeated many times, so that the pneumatic rod 31 pulls the first shell 11 and the second shell 12 toward the middle. At this time, the semicircular sealing rings 15 at both ends are tightly attached to the outer surface of the raw tape, and the assembly strip 19 is inserted into the assembly sealing strip 17, so that the first shell 11 and the second shell 12 are clamped on the outer wall of the pipe to form a sealed chamber. At this time, the valve core part 232 is rotated to close the input end 234 connected to the air guide tube 32.

[0039] At this time, water is injected into the sealed chamber through the water supply pipe 112, and the water surface is submerged above the top of the pipe connection. Then, the sealing valve on the outer surface of the water supply pipe 112 is closed. At this time, the valve core 232 is rotated to connect the vacuum cylinder 21 to the inside of the second shell 12. At this time, by repeatedly pulling and pulling the connecting handle 22, the vacuum cylinder 21 vacuums the inside of the sealed unit 1. At this time, a negative pressure state is formed at the top of the second shell 12. The internal pressure is observed through the pressure gauge 111, and then the interior is observed through the side tempered glass 13 and the top tempered glass 110 to see if bubbles appear, and the leakage position is determined according to the location where the bubbles occur. At the same time, if bubbles occur on both sides during this process, it means that there is a sealing defect at the connection between the first shell 11 and the second shell 12. At this time, it is necessary to replace the assembly sealing strip 17 and the semicircular sealing ring 15 to improve the experimental environment. Finally, if bubbles appear at the pipe connection, it means that there is a sealing defect at the water supply pipe connection. If no bubbles are generated under the specified pressure conditions, it means that there is no sealing defect.

[0040] After the test is completed, the two input ends 234 are connected through the valve core part 232 by rotating the valve core part 232. At this time, the sealing unit 1 is connected to the inside of the pneumatic rod 31. At this time, the sealing valve on the outer surface of the water supply pipe 112 is opened. At this time, the external air enters the sealing unit 1 and the inside of the pneumatic rod 31, and the negative pressure state is released. Then the threaded fastener 36 is unscrewed, and the first shell 11 and the second shell 12 are separated to complete the sealing test of the water pipe connection.

[0041] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A water supply pipe connection sealing test equipment, characterized in that: include; A sealing unit (1) comprising a first shell (11) and a second shell (12) arranged opposite to each other, wherein the first shell (11) and the second shell (12) are mounted on the outer wall of a water supply pipe to form a sealed chamber; A pneumatic connection unit (3) disposed between the first housing (11) and the second housing (12); An air extraction unit (2), the air extraction unit (2) comprising: A vacuum pump (21) fixedly arranged on both sides of the first shell (11); An improved four-way valve (23) is installed at the end of the vacuum cylinder (21); The vacuum cylinder (21) is connected to the pneumatic connection unit (3) via a modified four-way valve (23) and is used for sealing and fixing the first shell (11) and the second shell (12); The vacuum cylinder (21) is connected to the interior of the sealing unit (1) via a modified four-way valve (23) and is used to vacuum the interior of the sealing unit (1).

2. The water supply pipe connection sealing test equipment according to claim 1, characterized in that: The sealing unit (1) further comprises: A sealing assembly disposed between the first shell (11) and the second shell (12); Side-mounted tempered glass (13), fixedly disposed on the sides of the first shell (11) and the second shell (12); A top tempered glass (110) is fixedly arranged in the middle of the upper surface of the second shell (12); A pressure gauge (111) is fixedly mounted on one side of the top of the second housing (12); The water supply pipe (112) is fixedly mounted on the other side of the top of the second shell (12), and a sealing valve is mounted on the outer surface of the water supply pipe (112).

3. The water supply pipe connection sealing test equipment according to claim 2, characterized in that: The sealing assembly includes: Semicircular slots (14) are provided at both ends of the first shell (11) and the second shell (12); A semicircular sealing ring (15) is installed inside the semicircular groove (14); An assembly groove (16) is provided on the top of the first housing (11); An assembly sealing strip (17) is installed in the middle, and both ends of the assembly sealing strip (17) are fixedly connected to the semicircular sealing rings (15) on both sides; The assembly strip (19) is integrally formed at the bottom of the second shell (12), and the assembly strip (19) is movably inserted into the assembly sealing strip (17).

4. The water supply pipe connection sealing test equipment according to claim 1, characterized in that: The pneumatic connection unit (3) comprises: Gas pressure rod (31); A fixing stud (33) is fixedly welded to one end of the gas pressure rod (31), and the fixing stud (33) is threadedly connected to the top of the second housing (12); An air guide tube (32) installed between the two groups of gas pressure rods (31); The connecting portion is provided at the other end of the pneumatic rod (31) and is fixedly mounted to the first housing (11).

5. The water supply pipe connection sealing test equipment according to claim 4, characterized in that: The connecting portion includes: A connecting stud (34) fixedly welded to the end of the output shaft of the gas pressure rod (31); A conical sealing plug (35) is fixedly mounted on the outer surface of the output shaft of the gas pressure rod (31); a threaded fixing member (36) threadedly connected to the outer surface of the connecting stud (34); The output shaft of the pneumatic rod (31) passes through the lower surface of the first housing (11), and the threaded fixing member (36) is installed outside the first housing (11).

6. The water supply pipe connection sealing test equipment according to claim 5, characterized in that: An assembly sealing groove (18) is provided at the bottom of the first shell (11), both ends of the assembly sealing groove (18) are tapered, the tapered sealing plug (35) is movably inserted into the inner top of the assembly sealing groove (18), and a sealing rubber pad (37) is fixedly provided at the end of the threaded fixing member (36), and the sealing rubber pad (37) is movably inserted into the inner bottom of the assembly sealing groove (18).

7. The water supply pipe connection sealing test equipment according to claim 6, characterized in that: A fixing clamp (25) is installed between the vacuum cylinder (21) and the outer wall of the second shell (12), a piston member (24) is slidably provided at one end of the vacuum cylinder (21), and connecting handles (22) are fixedly provided at the outer ends of two groups of piston members (24), and two groups of one-way valves (26) are installed at the other end of the vacuum cylinder (21), one group of the one-way valves (26) is connected to the outside, and the other group of the one-way valves (26) is connected to the improved four-way valve (23).

8. The water supply pipe connection sealing test equipment according to claim 7, characterized in that: The improved four-way valve (23) comprises: A valve seat (231) fixedly disposed on the outer wall of the second housing (12); A valve core member (232) is rotatably disposed inside the valve seat (231); Two groups of output ends (233) are integrally formed on the outer wall of the valve seat (231), and the outer ends of the two groups of output ends (233) are connected; The two sets of input ends (234) are integrally formed on the outer wall of the valve seat (231), and the two sets of input ends (234) are perpendicular to each other.

9. The water supply pipe connection sealing test equipment according to claim 8, characterized in that: The output end (233) is connected to a set of one-way valves (26), one set of the input ends (234) is connected to the interior of the second housing (12), and another set of the input ends (234) is connected to the air guide tube (32).

10. A water supply pipe connection sealing test method, based on the water supply pipe connection sealing test equipment according to any one of claims 1 to 9, characterized in that: The following steps are included: Step 1: forming a sealed chamber on the outer surface of the water supply pipe connection through the sealing unit (1); Step 2: Fill the sealed chamber with water so that the connection of the water supply pipe is submerged in water; Step 3: Vacuum the inside of the sealed chamber through the vacuum unit (2), and then observe whether there are bubbles coming out of the water pipe connection.

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