A device for testing the tightness of a hydrophobic valve

Abstract

The application relates to the field of hydrophobic valve testing devices, in particular to a sealing performance testing device for a hydrophobic valve, which comprises a pressure tank and a sealing box, the pressure tank is connected with an air inlet pipeline, one end of the air inlet pipeline away from the pressure tank is connected with a water inlet pipe end of the hydrophobic valve, the sealing box is provided with a water storage cavity, a sealing groove is arranged on the surface of the sealing box, the inner wall of the sealing groove can abut against the circumferential outer wall of a water outlet pipe end of the hydrophobic valve to form a seal, a measuring cylinder is connected with the surface of the sealing box, a measuring cavity is arranged on the surface of the measuring cylinder, the measuring cavity is communicated with the water storage cavity, and a float is slidably connected with the inner wall of the measuring cavity. In the application, the pressure tank, the sealing box and the measuring cylinder are arranged, a worker can obtain the gas volume discharged from the water outlet pipe end of the hydrophobic valve according to the sliding distance of the float on the inner wall of the measuring cavity, the worker does not need to observe the bubble quantity discharged from the water outlet pipe end of the hydrophobic valve all the time, the working pressure of the worker is reduced, and the sealing performance detection precision of the worker on the hydrophobic valve is improved.

Description

Technical Field

[0001] This application relates to the field of steam trap testing apparatus, and more particularly to a steam trap sealing performance testing apparatus. Background Technology

[0002] Steam traps, also known as water traps, are divided into those used in steam systems and those used in gas systems. Steam traps are installed at the end of pipes heated by steam, and their main function is to continuously discharge condensate from the steam-heated pipes to the outside of the pipes.

[0003] Before leaving the factory, steam traps need to undergo a sealing test. Traditional steam trap sealing test devices mainly involve immersing the steam trap's outlet pipe end in water and observing whether the number of bubbles rising from the outlet pipe end in the water is within the specified range, thereby determining whether the steam trap's sealing performance is qualified.

[0004] When several bubbles continuously emerge from the outlet pipe of the steam trap and rise and dissipate, the staff cannot accurately count the number of bubbles emerging from the steam trap. Furthermore, the size of the bubbles emerging from the outlet pipe of the steam trap varies, making it impossible for the staff to accurately control the volume of gas discharged from the outlet pipe of the steam trap. This results in a decrease in the accuracy of the staff's testing of the sealing performance of the steam trap. Summary of the Invention

[0005] To improve the accuracy of steam trap sealing performance testing by operators, this application provides a steam trap sealing performance testing device.

[0006] This application provides a sealing performance testing device for a steam trap, which adopts the following technical solution: A sealing performance testing device for a steam trap includes a pressure tank and a sealing chamber. The pressure tank is capable of storing compressed air and has an air inlet pipe connected to it. The end of the air inlet pipe furthest from the pressure tank is connected to the inlet pipe of the steam trap. The compressed air in the pressure tank enters the inlet pipe of the steam trap through the air inlet pipe. The sealing chamber has a water storage cavity. A sealing groove is formed on the surface of the sealing chamber, penetrating the surface of the sealing chamber and communicating with the water storage cavity. The outlet pipe of the steam trap passes through the sealing groove and is located within the water storage cavity. Inside the water chamber, the inner wall of the sealing groove can press against the outer circumferential wall of the drain valve outlet pipe to form a seal. A measuring cylinder is connected to the surface of the sealing box. A measuring cavity is opened on the surface of the measuring cylinder away from the sealing box. The measuring cavity is connected to the water storage cavity. A float is slidably connected to the inner wall of the measuring cavity. The outer circumferential wall of the float presses against the inner wall of the measuring cavity to form a seal. When compressed air in the drain valve enters the water storage cavity from the outlet pipe, the air pressure in the water storage cavity increases and drives the float to slide along the inner wall of the measuring cavity away from the sealing box.

[0007] By adopting the above technical solution, when testing the sealing performance of the steam trap, the inlet pipe of the steam trap is connected to the air inlet pipe, and the outlet pipe of the steam trap is fitted with a sealing groove and located in the water storage chamber. The outer circumferential wall of the outlet pipe of the steam trap is pressed against the inner wall of the sealing groove to form a seal. The water storage chamber is filled with water, and compressed air in the pressure tank enters the inlet pipe of the steam trap through the air inlet pipe. When the compressed air in the steam trap is discharged from the outlet pipe, the compressed air accumulates in the water storage chamber, and the air pressure in the water storage chamber increases. The outer circumferential wall of the float is pressed against the inner wall of the measuring chamber to form a seal, which drives the float to slide along the inner wall of the measuring chamber away from the sealing box. The operator can determine the volume of gas discharged from the outlet pipe of the steam trap based on the sliding distance of the float on the inner wall of the measuring chamber. This eliminates the need for the operator to constantly observe the number of air bubbles discharged from the outlet pipe of the steam trap, thereby reducing the operator's workload and improving the accuracy of the operator's testing of the sealing performance of the steam trap.

[0008] Optionally, the sealing box includes a sealing section one and a sealing section two. The water storage cavity and the sealing groove are both located between the sealing section one and the sealing section two. A sealing strip is connected to the surface of the sealing section one facing the sealing section two. A sealing cavity for the sealing strip to be embedded is opened on the surface of the sealing section two facing the sealing section one. When the sealing section one covers the sealing section two to form a sealing box, the outer wall of the sealing strip abuts against the inner wall of the sealing cavity to form a seal.

[0009] By adopting the above technical solution, when the outlet pipe end of the steam trap is placed on the sealing section one, the sealing section two covers the sealing section one to form a sealing box. The inner wall of the sealing groove presses against the outer circumferential wall of the outlet pipe end of the steam trap to form a seal. At the same time, the outer wall of the sealing strip presses against the inner wall of the sealing cavity to form a seal, so that the water in the water storage cavity is not easy to overflow from the connection between the sealing section one and the sealing section two, thereby improving the sealing stability between the sealing section one and the sealing section two.

[0010] Optionally, a sealing assembly is connected to the sealing box. The sealing assembly includes a sealing plate and a power plate. The inner wall of the sealing cavity has a power cavity for the power plate to slide. The end face of the power plate, which is flush with the surface of the second sealing section, can abut against the sealing strip. The surface of the second sealing section facing the first sealing section has a drive cavity for the sealing plate to slide. The drive cavity is connected to the power cavity. The surface of the first sealing section facing the second sealing section has a clamping cavity for the end of the sealing plate to be embedded. When the first sealing section covers the second sealing section, the sealing strip abuts against the power plate and drives the power plate to slide towards the power cavity, which in turn drives the end of the sealing plate to slide towards the clamping cavity. The end of the sealing plate is embedded in the clamping cavity, and the outer circumferential wall of the sealing plate abuts against the inner wall of the clamping cavity to form a seal.

[0011] By adopting the above technical solution, when sealing section one covers sealing section two, the surface of the sealing strip abuts against the surface of the power plate and drives the power plate to slide towards the power cavity. The power cavity is connected to the drive cavity, the air pressure in the power cavity increases, and the air in the power cavity enters the drive cavity. The drive cavity and the pressing cavity are connected, the air pressure in the drive cavity increases and drives the sealing plate to slide towards the pressing cavity. The end of the sealing plate is embedded in the pressing cavity, and the outer circumferential wall of the sealing plate abuts against the inner wall of the pressing cavity to form a seal, thereby improving the sealing stability between sealing section one and sealing section two.

[0012] Optionally, the sealing assembly further includes an elastic element, one end of which is connected to the inner wall of the power cavity in the direction of elastic force, and the other end of which is connected to the power plate in the direction of elastic force. The direction of elastic force of the elastic element and the sliding direction of the power plate are parallel to each other. The elastic element has the elastic force to drive the power plate to slide away from the power cavity, and the surface of the power plate tends to be flush with the second surface of the sealing section.

[0013] By adopting the above technical solution, when the sealing section one separates from the sealing section two, the pressure of the sealing strip on the power plate disappears, and the elastic force of the elastic element drives the power plate to slide away from the power cavity. The surface of the power plate is flush with the surface of the sealing section two, realizing the automatic reset of the power plate. There is no need for the staff to manually adjust the power plate, thereby improving the ease of use of the sealing performance testing device for the steam trap.

[0014] Optionally, a sealing arc strip is connected to the inner wall of the sealing groove, and the inner ring of the sealing arc strip can press against the outer circumferential wall of the drain outlet pipe end of the drain valve to form a seal.

[0015] By adopting the above technical solution, when the sealing groove is installed at the outlet pipe end of the steam trap and is located in the water storage cavity, the inner ring of the sealing arc bar presses against the outer circumferential wall of the outlet pipe end of the steam trap to form a seal, making it difficult for water in the water storage cavity to overflow from the connection between the inner wall of the sealing groove and the outlet pipe end of the steam trap, thereby improving the sealing stability between the inner wall of the sealing groove and the outlet pipe end of the steam trap.

[0016] Optionally, the measuring cylinder is connected to a sealing section, and a water inlet assembly is connected to the sealing section. The water inlet assembly includes a water inlet pipe, a water inlet valve body, a one-way valve, and a sealing block. One end of the water inlet pipe is connected to the surface of the sealing section, and the inner cavity of the water inlet pipe communicates with a water storage chamber. The other end of the water inlet pipe is connected to the water inlet valve body. Water passes sequentially through the water inlet valve body and the water inlet pipe and enters the water storage chamber. The water inlet valve body can control the opening and closing of the water inlet pipe, and the one-way valve is connected to the surface of the sealing section. On the other hand, the air in the water storage chamber is discharged to the outside through a one-way valve. The measuring cylinder has a sliding groove on its surface facing the one-way valve for the sliding of the sealing block. The sliding groove is connected to the measuring chamber. When the sealing block slides towards the measuring chamber, one end of the float abuts against the surface of the sealing block, and the other end of the float is flush with the inner wall of the water storage chamber. When the sealing block slides towards the one-way valve, the surface of the sealing block abuts against the outlet of the one-way valve to form a seal, and the limiting effect of the sealing block on the float disappears.

[0017] By adopting the above technical solution, when sealing section one covers sealing section two to form a sealed box, the sealing block slides along the inner wall of the sliding groove towards the measuring chamber. One end of the float abuts against the surface of the sealing block, and the other end of the float is flush with the inner wall of the water storage chamber. When the inlet valve body is opened, water passes through the inlet valve body and the inlet pipe in sequence and enters the water storage chamber, driving the air in the water storage chamber to be discharged through the one-way valve, thus storing water in the water storage chamber. When water is discharged from the one-way valve, it proves that the water storage chamber is full of water. The operator drives the sealing block to slide along the inner wall of the sliding groove towards the one-way valve. The surface of the sealing block abuts against the outlet of the one-way valve and closes the one-way valve. At the same time, the sealing effect of the sealing block on the float disappears. The pressure tank is opened, and the compressed air in the pressure tank enters the inlet pipe of the steam trap through the air inlet pipe. When the compressed air in the steam trap is discharged from the outlet pipe, the air pressure in the water storage chamber increases and drives the float to slide away from the sealed box, thus realizing the real-time monitoring of the sealing performance test of the steam trap by the operator.

[0018] Optionally, a slider is connected to the surface of the float, and a groove is provided on the inner wall of the measuring cavity for the slider to slide.

[0019] By adopting the above technical solution, when the float slides on the inner wall of the measuring cavity, it drives the float to slide on the inner wall of the slide groove, making it less likely for the float to deviate on the inner wall of the measuring cavity, thereby improving the stability of the float sliding in the measuring cavity.

[0020] Optionally, a positioning plate is connected to one surface of the sealing section. The positioning plate is located on the side of the one-way valve away from the measuring cylinder. The surface of the positioning plate facing the measuring cylinder can abut against the surface of the sealing block. When the sealing block slides towards the positioning plate, one end of the sealing block abuts against the surface of the positioning plate, and the other end of the sealing block is flush with the inner wall of the measuring cavity. The sealing block also seals the outlet of the one-way valve.

[0021] By adopting the above technical solution, when the water storage chamber is full of water, the operator drives the sealing block to slide along the inner wall of the sliding groove towards the one-way valve. One end of the sealing block abuts against the surface of the positioning plate, and the other end of the sealing block is flush with the inner wall of the measuring chamber. The surface of the sealing block abuts against the outlet of the one-way valve to form a seal. The positioning plate provides positioning for the sliding of the sealing block. The operator does not need to repeatedly adjust the position of the sealing block in the sliding groove, thereby improving the ease of use of the sealing test device for the steam trap.

[0022] Optionally, a viewing mirror is connected to the measuring cylinder, which allows direct observation of the float's position within the measuring cavity.

[0023] By adopting the above technical solution, staff can directly observe the position of the float in the measuring chamber through the viewing mirror, without having to use a measuring ruler to measure the depth of the float in the measuring chamber, thereby improving the ease of use of the steam trap sealing test device for staff.

[0024] Optionally, the surface of the measuring cylinder near the viewing mirror is engraved with a scale, which can measure the position and height of the float within the measuring cavity.

[0025] By adopting the above technical solution, staff can directly observe the position of the float in the measuring chamber through a viewing mirror and read the rise height of the float directly through the scale. This allows staff to accurately know the volume of gas discharged from the outlet pipe of the steam trap, thereby improving the accuracy of staff in measuring the sealing performance of the steam trap.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The setup of the pressure tank, sealing box, and measuring cylinder allows the operator to determine the volume of gas discharged from the outlet pipe of the steam trap based on the sliding distance of the float on the inner wall of the measuring chamber. This eliminates the need for the operator to constantly observe the number of air bubbles discharged from the outlet pipe of the steam trap, thereby reducing the operator's working pressure and improving the accuracy of the operator's testing of the sealing performance of the steam trap. 2. The design of the sealing strip and sealing cavity makes it difficult for water in the water storage cavity to overflow from the connection between sealing section one and sealing section two, thereby improving the sealing stability between sealing section one and sealing section two. 3. The flexible plate setting enables the automatic reset of the power plate, eliminating the need for manual adjustment by operators and thus improving the ease of use of the steam trap sealing test device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a partial cross-sectional view of an embodiment of this application, mainly showing the water inlet component.

[0029] Figure 3 This is a schematic diagram of the overall structure of the steam trap and the sealing box in the embodiments of this application.

[0030] Figure 4 This is a partial cross-sectional view of an embodiment of this application, mainly showing the slide.

[0031] Explanation of reference numerals in the attached drawings: 1. Pressure tank; 2. Sealing box; 21. Water storage chamber; 22. Sealing groove; 23. Sealing section one; 231. Pressing chamber; 24. Sealing section two; 241. Sealing chamber; 242. Power chamber; 243. Drive chamber; 3. Air inlet pipe; 4. Opening and closing valve body; 5. Drain valve; 6. Sealing arc strip; 7. Sealing strip; 8. Sealing assembly; 81. Sealing plate; 82. Power plate; 83. Elastic element; 9. Measuring cylinder; 91. Measuring chamber; 92. Slide groove; 93. Scale; 94. Sliding groove; 10. Float; 11. Sliding block; 12. Viewing mirror; 13. Water inlet assembly; 131. Water inlet pipe; 132. Water inlet valve body; 133. Check valve; 134. Sealing block; 14. Positioning plate. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a sealing performance testing device for a steam trap. (Refer to...) Figure 1 A sealing performance testing device for a steam trap includes a pressure tank 1 and a sealing box 2. The pressure tank 1 can store compressed air. An air inlet pipe 3 is fixed to the air outlet end of the pressure tank 1 through a flange. The end of the air inlet pipe 3 away from the pressure tank 1 is fixed to the flange of the water inlet pipe end of the steam trap 5. The compressed air in the pressure tank 1 enters the water inlet pipe end of the steam trap 5 through the air inlet pipe 3. An opening and closing valve body 4 is installed on the water inlet pipe 131, which can control the opening and closing of the water inlet pipe 131.

[0034] Reference Figure 2 In this embodiment, the sealing box 2 is a square box with a water storage cavity 21 for storing water. A sealing groove 22 is formed on the surface of the sealing box 2. In this embodiment, the sealing groove 22 is a cylindrical groove. The axis of the sealing groove 22 is parallel to the length direction of the sealing box 2. The sealing groove 22 passes through the outer wall of the sealing box 2 along its own axis and connects to the water storage cavity 21. The outlet pipe end of the drain valve 5 can pass through the sealing groove 22 and is located in the water storage cavity 21. The circumferential outer wall of the outlet pipe end of the drain valve 5 can abut against the inner wall of the sealing groove 22 to form a seal. A sealing arc strip 6 is coaxially embedded in the inner wall of the sealing groove 22. The material of the sealing arc strip 6 can be rubber or silicone. In this embodiment, the material of the sealing arc strip 6 is rubber, which has a certain deformation capability. The inner arc surface of the sealing arc strip 6 can abut against the circumferential outer wall of the outlet pipe end of the drain valve 5 to form a seal.

[0035] Reference Figure 2 The sealed box 2 includes a first sealing section 23 and a second sealing section 24. In this embodiment, both the first sealing section 23 and the second sealing section 24 are square plates. The first sealing section 23 covers the second sealing section 24 to form the sealed box 2. The water storage cavity 21 and the sealing groove 22 are both located between the first sealing section 23 and the second sealing section 24. A sealing strip 7 is fixed on the surface of the first sealing section 23 facing the second sealing section 24. A sealing cavity 241 for the sealing strip 7 to be embedded is opened on the surface of the second sealing section 24 facing the first sealing section 23. When the first sealing section 23 covers the second sealing section 24 to form the sealed box 2, the surface of the sealing strip 7 presses against the inner wall of the sealing cavity 241 to form a seal, so that the water in the water storage cavity 21 is not easy to overflow from the connection between the first sealing section 23 and the second sealing section 24, thereby improving the sealing stability between the first sealing section 23 and the second sealing section 24.

[0036] Reference Figure 2 A sealing assembly 8 is connected to the sealing box 2. The sealing assembly 8 can increase the sealing stability between the first sealing section 23 and the second sealing section 24. The sealing assembly 8 includes a sealing plate 81, a power plate 82, and an elastic element 83. The sealing cavity 241 has a power cavity 242 for the power plate 82 to slide on the inner wall facing the sealing strip 7. In this embodiment, the power plate 82 is equivalent to a piston. The sliding direction of the power plate 82 is parallel to the height direction of the first sealing section 23. The elastic element 83 can be a compression spring or a tension spring. In this embodiment, the elastic element 83 is a compression spring with a certain deformation capacity. One end of the elastic element 83 in the elastic direction is fixed to the inner wall of the power cavity 242, and the other end of the elastic element 83 in the elastic direction is fixed to the power plate 82. The elastic direction of the elastic element 83 is parallel to the sliding direction of the power plate 82. The elastic element 83 has the elastic force to drive the power plate 82 to slide away from the power cavity 242, and the surface of the power plate 82 tends to be flush with the surface of the second sealing section 24.

[0037] Reference Figure 2The surface of sealing section 24 facing sealing section 23 is provided with a driving cavity 243 for sliding of sealing plate 81. In this embodiment, sealing plate 81 is equivalent to piston. The sliding direction of sealing plate 81 and sliding direction of power plate 82 are parallel to each other. The surface of sealing plate 81 is flush with the surface of sealing section 24. Power cavity 242 is connected to driving cavity 243. The surface of sealing section 23 facing sealing section 24 is provided with a pressing cavity 231 for the end of sealing plate 81 to be embedded. When sealing section 1 23 covers sealing section 24 to form sealing box 2, the surface of sealing strip 7 abuts against the surface of power plate 82 and drives power plate 82 to slide towards power cavity 242. After the air pressure in power cavity 242 increases, air is driven into drive cavity 243. The air pressure in drive cavity 243 increases. Drive cavity 243 connects to clamping cavity 231 and drives sealing plate 81 to slide towards clamping cavity 231. The end of sealing plate 81 is embedded in clamping cavity 231. The outer wall of sealing plate 81 abuts against the inner wall of clamping cavity 231 to form a seal, and the surface of sealing strip 7 abuts against the inner wall of sealing cavity 241 to form a seal.

[0038] Reference Figure 3 and Figure 4 A measuring cylinder 9 is welded and fixed to the surface of sealing section 23 away from sealing section 24. A measuring cavity 91 is formed on the surface of the measuring cylinder 9 away from sealing section 23. The measuring cavity 91 penetrates the outer wall of the measuring cylinder 9 in the depth direction and connects to the water storage cavity 21. A float 10 is slidably connected to the inner wall of the measuring cavity 91. The float 10 is pressed against the inner wall of the measuring cavity 91 to form a seal. The surface of the float 10 facing the water storage cavity 21 is flush with the inner wall of the water storage cavity 21, and the sliding direction of the float 10 is parallel to the depth direction of the measuring cavity 91. A slider 11 is fixed on the surface of the float 10. A groove 92 is provided on the inner wall of the measuring cavity 91 for the slider 11 to slide. In this embodiment, the groove 92 is a strip groove. The length direction of the groove 92 is parallel to the depth direction of the measuring cavity 91. A viewing mirror 12 is embedded on the surface of the measuring cylinder 9. The viewing mirror 12 can directly observe the depth position of the float 10 in the measuring cavity 91. The surface of the measuring cylinder 9 near the viewing mirror 12 is engraved with a scale 93. The scale 93 can directly measure the height of the float 10 in the measuring cavity 91.

[0039] Reference Figure 1 and Figure 2 When compressed air in pressure tank 1 enters the inlet pipe of steam trap 5 through inlet pipe 3, and when compressed air in steam trap 5 leaks into water storage chamber 21 through outlet pipe, the air pressure in water storage chamber 21 increases and drives float 10 to slide away from sealing box 2 on the inner wall of measuring chamber 91. The operator can directly obtain the volume of gas discharged from outlet pipe of steam trap 5 by the position height of float 10 in measuring chamber 91, so that the operator does not need to constantly observe the number of air bubbles discharged from outlet pipe of steam trap 5, thereby reducing the operator's working pressure and improving the accuracy of the operator's sealing performance test of steam trap 5.

[0040] Reference Figure 2 A water inlet assembly 13 is connected to the sealing section 23, which can drive water to fill the water storage chamber 21. The water inlet assembly 13 includes a water inlet pipe 131, a water inlet valve body 132, a one-way valve 133, and a sealing block 134. One end of the water inlet pipe 131 is installed on the surface of the sealing section 23, and the inner cavity of the water inlet pipe 131 is connected to the water storage chamber 21. The other end of the water inlet pipe 131 is installed at the outlet end of the water inlet valve body 132. The water inlet valve body 132 can control the opening and closing of the water inlet pipe 131. Water passes through the water inlet valve body 132 and the water inlet pipe 131 in sequence and enters the water storage chamber 21, thereby supplying water to the water storage chamber 21. One-way valve 133 is installed on the surface of sealing section 23. Air in water storage chamber 21 is discharged to the outside through one-way valve 133. The surface of measuring cylinder 9 facing one-way valve 133 is provided with sliding groove 94 for sliding block 134. Sliding groove 94 is connected to measuring chamber 91. Positioning plate 14 is welded and fixed on the surface of sealing section 23. Positioning plate 14 is located on the side of one-way valve 133 away from measuring cylinder 9. The surface of positioning plate 14 facing measuring cylinder 9 can abut against the surface of sealing block 134.

[0041] Reference Figure 2 When the sealing block 134 slides towards the measuring chamber 91, one end of the float 10 abuts against the surface of the sealing block 134, and the other end of the float 10 is flush with the inner wall of the water storage chamber 21, thus limiting the float 10 on the inner wall of the measuring chamber 91. Water passes through the inlet valve body 132 and the inlet pipe 131 in sequence and enters the water storage chamber 21. After the air pressure in the water storage chamber 21 increases, it is discharged to the outside through the one-way valve 133. When the one-way valve 133 discharges water, the operator can directly know whether the water storage chamber 21 is full of water, which drives the sealing block 134 to slide towards the positioning plate 14. One end of the sealing block 134 abuts against the surface of the positioning plate 14, and the other end of the sealing block 134 is flush with the inner wall of the measuring chamber 91, so that the sealing effect of the sealing block 134 on the float 10 disappears, and the sealing block 134 closes the outlet of the one-way valve 133.

[0042] The principle of the sealing performance testing device for a steam trap according to this application embodiment is as follows: Compressed air in the pressure tank 1 enters the inlet pipe of the steam trap 5 through the air inlet pipe 3. When the compressed air in the steam trap 5 leaks into the water storage chamber 21 through the outlet pipe, the air pressure in the water storage chamber 21 increases and drives the float 10 to slide away from the sealing box 2 on the inner wall of the measuring chamber 91. The operator can directly obtain the volume of gas discharged from the outlet pipe of the steam trap 5 by the position height of the float 10 in the measuring chamber 91. This eliminates the need for the operator to constantly observe the number of air bubbles discharged from the outlet pipe of the steam trap 5, thereby reducing the operator's working pressure and improving the accuracy of the operator's sealing performance testing of the steam trap 5.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing performance testing device for a steam trap, characterized in that: The system includes a pressure tank (1) and a sealed box (2). The pressure tank (1) is capable of storing compressed air. An air inlet pipe (3) is connected to the pressure tank (1). The end of the air inlet pipe (3) away from the pressure tank (1) is connected to the water inlet pipe of a steam trap (5). The compressed air in the pressure tank (1) enters the water inlet pipe of the steam trap (5) through the air inlet pipe (3). The sealed box (2) has a water storage chamber (21) for storing water. A sealing groove (22) is formed on the surface of the sealed box (2). The sealing groove (22) penetrates the surface of the sealing box (2) and connects to the water storage cavity (21). The outlet pipe end of the drain valve (5) passes through the sealing groove (22) and is located inside the water storage cavity (21). The inner wall of the sealing groove (22) can abut against the circumferential outer wall of the outlet pipe end of the drain valve (5) to form a seal. A measuring cylinder (9) is connected to the surface of the sealing box (2). A measuring cavity (91) is opened on the surface of the measuring cylinder (9) away from the sealing box (2). The measuring cavity (91) connects to the water storage cavity (21). A float (10) is slidably connected to the inner wall of the measuring chamber (91). The outer circumferential wall of the float (10) abuts against the inner wall of the measuring chamber (91) to form a seal. When compressed air in the drain valve (5) enters the water storage chamber (21) from the outlet pipe end, the air pressure in the water storage chamber (21) increases and drives the float (10) to slide along the inner wall of the measuring chamber (91) away from the sealing box (2). The sealing box (2) includes a sealing section one (23) and a sealing section two (24). The water storage chamber (21) Both the sealing groove (22) and the sealing section (23) are located between the sealing section one (23) and the sealing section two (24). The sealing section one (23) is connected to the surface facing the sealing section two (24) with a sealing strip (7). The sealing section two (24) is provided with a sealing cavity (241) for the sealing strip (7) to be embedded in the surface facing the sealing section one (23). When the sealing section one (23) covers the sealing section two (24) to form a sealing box (2), the outer wall of the sealing strip (7) abuts against the inner wall of the sealing cavity (241) to form a seal.A sealing assembly (8) is connected to the sealing box (2). The sealing assembly (8) includes a sealing plate (81) and a power plate (82). The inner wall of the sealing cavity (241) is provided with a power cavity (242) for the power plate (82) to slide. The end face of the power plate (82) flush with the surface of the second sealing section (24) can abut against the sealing strip (7). The surface of the second sealing section (24) facing the first sealing section (23) is provided with a drive cavity (243) for the sealing plate (81) to slide. The drive cavity (243) is connected to the power cavity (242). The surface of the first sealing section (23) facing the second sealing section (24) is provided with a clamping cavity (231) for the end of the sealing plate (81) to be embedded. When the first sealing section (23) covers the sealing section... At the second (24) time, the sealing strip (7) abuts against the power plate (82) and drives the power plate (82) to slide towards the power cavity (242), causing the end of the sealing plate (81) to slide towards the pressing cavity (231). The end of the sealing plate (81) is embedded in the pressing cavity (231), and the outer circumferential wall of the sealing plate (81) abuts against the inner wall of the pressing cavity (231) to form a seal. The measuring cylinder (9) is connected to the sealing section one (23), and the sealing section one (23) is connected to the water inlet assembly (13). The water inlet assembly (13) includes a water inlet pipe (131), a water inlet valve body (132), a one-way valve (133), and a sealing block (134). One end of the water inlet pipe (131) is connected to the sealing section one (242). 23) On the surface, the inner cavity of the water inlet pipe (131) is connected to the water storage chamber (21), and the other end of the water inlet pipe (131) is connected to the water inlet valve body (132). Water passes through the water inlet valve body (132) and the water inlet pipe (131) in sequence and enters the water storage chamber (21). The water inlet valve body (132) can control the opening and closing of the water inlet pipe (131). The one-way valve (133) is connected to the surface of the sealing section (23). The air in the water storage chamber (21) is discharged to the outside through the one-way valve (133). The measuring cylinder (9) has a sliding groove (94) on the surface facing the one-way valve (133) for the sliding of the sealing block (134). The sliding groove (94) is connected to the measuring chamber (91). When the sealing block (134) When the float (10) slides towards the measuring chamber (91), one end of the float (10) abuts against the surface of the sealing block (134), and the other end of the float (10) is flush with the inner wall of the water storage chamber (21). The inlet valve body (132) is opened, and water flows sequentially through the inlet valve body (132), the inlet pipe (131), and into the water storage chamber (21). The air pressure inside the water storage chamber (21) increases and is discharged to the outside through the one-way valve (133). When the one-way valve (133) discharges water, it drives the sealing block (134) to slide towards the one-way valve (133). The surface of the sealing block (134) abuts against the outlet of the one-way valve (133), forming a seal, and the limiting effect of the sealing block (134) on the float (10) disappears.

2. The sealing performance testing device for a steam trap according to claim 1, characterized in that: The sealing assembly (8) further includes an elastic element (83), one end of which is connected to the inner wall of the power cavity (242) in the elastic direction, and the other end of which is connected to the power plate (82). The elastic direction of the elastic element (83) and the sliding direction of the power plate (82) are parallel to each other. The elastic element (83) has the elastic force to drive the power plate (82) to slide away from the power cavity (242), and the surface of the power plate (82) tends to be flush with the surface of the sealing section two (24).

3. The sealing performance testing device for a steam trap according to claim 1, characterized in that: The inner wall of the sealing groove (22) is connected to a sealing arc strip (6), and the inner ring of the sealing arc strip (6) can press against the outer circumferential wall of the drain pipe end of the drain valve (5) to form a seal.

4. The sealing performance testing device for a steam trap according to claim 1, characterized in that: The surface of the float (10) is connected to a slider (11), and the inner wall of the measuring cavity (91) is provided with a groove (92) for the slider (11) to slide.

5. The sealing performance testing device for a steam trap according to claim 1, characterized in that: A positioning plate (14) is connected to the surface of the sealing section (23). The positioning plate (14) is located on the side of the one-way valve (133) away from the measuring cylinder (9). The surface of the positioning plate (14) facing the measuring cylinder (9) can abut against the surface of the sealing block (134). When the sealing block (134) slides towards the positioning plate (14), one end of the sealing block (134) abuts against the surface of the positioning plate (14), and the other end of the sealing block (134) is flush with the inner wall of the measuring chamber (91). The sealing block (134) seals the outlet of the one-way valve (133).

6. The sealing performance testing device for a steam trap according to claim 1, characterized in that: A viewing mirror (12) is connected to the measuring cylinder (9), which allows direct observation of the position of the float (10) within the measuring cavity (91).

7. The sealing performance testing device for a steam trap according to claim 6, characterized in that: The measuring cylinder (9) has a scale (93) engraved on its surface near the viewing mirror (12), which can measure the position and height of the float (10) in the measuring cavity (91).

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