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CN-224216256-U - Pressure reducing valve air tightness detection device

CN224216256UCN 224216256 UCN224216256 UCN 224216256UCN-224216256-U

Abstract

The utility model discloses a pressure reducing valve air tightness detection device in the technical field of pressure reducing valve detection, which comprises a frame, wherein a top plate is arranged on the frame in a sliding way, positioning rings are arranged on the frame and the top plate, the two positioning rings are respectively in plug-in fit with an inlet and an outlet of the pressure reducing valve, a sealing element is arranged on the positioning rings, a through hole and a cavity which are communicated and form a step-shaped structure are formed in the top plate, a piston rod is arranged in the cavity in a sliding way, a pressing plate is arranged at the free end of the piston rod, whether the pressure reducing valve has air leakage or not can be judged through the sliding stroke of the piston rod, and meanwhile misjudgment of detection results can be avoided, so that the pressure reducing valve air tightness detection device has practicability.

Inventors

  • ZHU DONGQING
  • GU YUFEI

Assignees

  • 苏州灏融科技有限公司

Dates

Publication Date
20260508
Application Date
20250410

Claims (8)

  1. 1. The utility model provides a relief pressure valve gas tightness detection device, its characterized in that, including frame (1), the slip is provided with roof (2) on frame (1), all be provided with holding ring (3) on frame (1) and roof (2), two holding rings (3) are pegged graft the cooperation with the import and the export of relief pressure valve respectively, be provided with the sealing member on holding ring (3), be constructed with through-hole (4) and cavity (5) that communicate and form step-like structure on roof (2), the interior sliding of cavity (5) is provided with piston rod (6), the free end of piston rod (6) is provided with clamp plate (7).
  2. 2. The device for detecting the tightness of the pressure reducing valve according to claim 1, wherein the positioning ring (3) is provided with an inwardly contracted guiding conical surface (8).
  3. 3. The device for detecting the air tightness of the pressure reducing valve according to claim 1, wherein the sealing piece comprises an annular groove (9) formed on the positioning ring (3), and a sealing ring (10) which is in abutting lap joint with an inlet or an outlet of the pressure reducing valve is clamped in the annular groove (9).
  4. 4. The pressure reducing valve tightness detection device according to claim 1 is characterized in that an adjusting screw rod (11) which is threaded through the top plate (2) is rotatably arranged on the frame (1).
  5. 5. The pressure reducing valve air tightness detection device according to claim 1, wherein the frame (1) is rotatably provided with a rope winding wheel (12), a pull rope (13) is wound on the rope winding wheel (12), a through hole (14) is formed in the frame (1), the free end of the pull rope (13) penetrates through the through hole (14) and is provided with a balancing weight (15) which is in abutting joint with the pressing plate (7), and a locking piece for locking or unlocking the rope winding wheel (12) is arranged on the frame (1).
  6. 6. The pressure reducing valve air tightness detection device according to claim 5, wherein the pressure plate (7) is provided with an embedded groove (16), and a magnet (17) which is in magnetic attraction fit with the balancing weight (15) is embedded in the embedded groove (16).
  7. 7. The device for detecting the tightness of a pressure reducing valve according to claim 5, wherein the diameter of the through hole (14) is larger than that of the pull rope (13), and a guiding cambered surface is formed at the orifice.
  8. 8. The pressure reducing valve air tightness detection device according to claim 5, wherein the locking piece comprises a locking rod (18) arranged on the frame (1), a pawl (19) is rotatably arranged on the locking rod (18), a torsion spring (20) sleeved on the locking rod (18) is arranged between the pawl (19) and the frame (1), and a ratchet wheel (21) which is in abutting lap joint with the pawl (19) is arranged on the rope winding wheel (12).

Description

Pressure reducing valve air tightness detection device Technical Field The utility model relates to the technical field of pressure reducing valve detection, in particular to a pressure reducing valve air tightness detection device. Background The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through adjustment and automatically keeps the outlet pressure stable by means of the energy of a medium, and in the production process of the pressure reducing valve, air leakage can occur due to the problems of production, assembly process or component quality and the like, so that the pressure reducing valve is required to be subjected to air leakage detection; The prior art publication CN21548370U discloses a detecting device for a marine pressure reducing valve, which fixes a pressure reducing valve body through a mounting seat, the fixing mode is simple, the pressure reducing valve body is directly inserted into a groove body in the mounting seat from top to bottom, after the fixing, two detecting pipes are respectively butted with the input end of the output end of the pressure reducing valve body through a butt joint seat, the detection can be started through a detecting pump, and a worker only needs to observe whether a front pressure gauge and a rear pressure gauge are consistent with the numerical value of a pressure gauge on the pressure reducing valve body or not, so that whether the tightness of the pressure reducing valve body and the pressure gauge reach standards or not can be intuitively and clearly judged; The pressure meter air tightness detection device has the defects that workers are required to read and compare the front pressure meter, the rear pressure meter and the pressure meter on the pressure reducing valve body one by one, the operation is troublesome, and meanwhile, the detection result is misjudged possibly due to the damage of the pressure meter, so that the pressure reducing valve air tightness detection device is provided. Disclosure of utility model The utility model aims to solve the technical problems that workers are required to read and compare the front pressure gauge, the rear pressure gauge and the pressure gauges on the pressure reducing valve body one by one, the operation is troublesome, and meanwhile, the detection result is misjudged possibly due to the damage of the pressure gauges. The utility model adopts the following technical scheme for realizing the purposes: The utility model provides a relief pressure valve gas tightness detection device, includes the frame, the slip is provided with the roof in the frame, all be provided with the holding ring on frame and the roof, two holding rings peg graft the cooperation with the import and the export of relief pressure valve respectively, be provided with the sealing member on the holding ring, be constructed with the through-hole and the cavity that communicate and form step-like structure on the roof, the slip is provided with the piston rod in the cavity, the free end of piston rod is provided with the clamp plate. Further, the positioning ring is provided with an inwardly contracted guiding conical surface. Further, the sealing element comprises an annular groove formed in the positioning ring, and a sealing ring which is in abutting lap joint with the inlet or the outlet of the pressure reducing valve is clamped in the annular groove. Further, an adjusting screw rod with threads penetrating through the top plate is rotatably arranged on the frame. Further, the rope winding wheel is rotatably arranged on the frame, the rope winding wheel is wound with the pull rope, the frame is provided with a perforation, the free end of the pull rope penetrates through the perforation and is provided with a balancing weight which is in abutting lap joint with the pressing plate, and the frame is provided with a locking piece for locking or unlocking the rope winding wheel. Further, an embedded groove is formed in the pressing plate, and a magnet in magnetic attraction fit with the balancing weight is embedded in the embedded groove. Further, the diameter of the perforation is larger than that of the pull rope, and a guiding cambered surface is formed at the orifice. Further, the locking piece comprises a locking rod arranged on the frame, a pawl is rotatably arranged on the locking rod, a torsion spring sleeved on the locking rod is arranged between the pawl and the frame, and a ratchet wheel which is in abutting lap joint with the pawl is arranged on the rope winding wheel. Compared with the prior art, the utility model has the beneficial effects that: The utility model has the advantages of convenient use and simple operation, can judge whether the pressure reducing valve has air leakage or not through the sliding stroke of the piston rod, and can avoid misjudgment of the detection result, thereby having more practicability. Drawings FIG. 1 is a perspective view of the st