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CN-121994428-A - Graphite sealing ring leakage measuring device and measuring method thereof

CN121994428ACN 121994428 ACN121994428 ACN 121994428ACN-121994428-A

Abstract

A graphite seal ring leakage measuring device and a measuring method thereof belong to the technical field of part detection. The left end and the right end of the shell are respectively connected with the left cover plate and the right cover plate, the outer side wall of the shell is in plug-in connection with the oil drain pipe connector body, the oil inlet pipe connector body, the oil return nozzle, the air inlet nozzle and the air outlet nozzle, the output end of the transmission shaft extends into the shell and is respectively and rotatably connected with the left cover plate and the right cover plate, the flywheel disc is fixedly sleeved on the outer side of the output end of the transmission shaft and is arranged in the shell and positioned between the oil return nozzle and the oil drain pipe connector body, the oil inlet pipe connector body, the air inlet nozzle and the air outlet nozzle, and the outer side of the left cover plate is connected with the outer cover plate. According to the invention, through the integrated measuring device and the matching method, the self-checking test of the leakage quantity of the graphite sealing ring is realized, the technical defects of long test period, high cost and unobservable process of an external commission are effectively overcome, and the accurate measurement of the leakage quantity is realized.

Inventors

  • LIU QI
  • XU KUN
  • WANG LIANG
  • WANG DONGLIN
  • YU KEXIN

Assignees

  • 哈尔滨东安实业发展有限公司

Dates

Publication Date
20260508
Application Date
20260114

Claims (8)

  1. 1. The graphite seal ring leakage measuring device is characterized by comprising a transmission shaft (1), an oil drain pipe right cover plate (4), an oil drain pipe joint body (7), a shell (8), a left cover plate (9), an outer cover plate (13), an oil inlet pipe joint body (17), an oil return nozzle (19), an air inlet nozzle (22) and an air exhaust nozzle (24), wherein the left end and the right end of the shell (8) are respectively connected with the left cover plate (9) and the right cover plate (4), the outer side wall of the shell (8) is respectively connected with the oil drain pipe joint body (7), the oil inlet pipe joint body (17), the oil return nozzle (19), the air inlet nozzle (22) and the air exhaust nozzle (24) in an inserting connection mode, the output end of the transmission shaft (1) stretches into the shell (8) and is respectively and rotationally connected with the left cover plate (9) and the right cover plate (4), a flywheel disc (5) is fixedly sleeved on the outer side of the output end of the transmission shaft (1), the flywheel disc (5) is arranged in the shell (8), and is positioned between the oil return nozzle (19) and the oil drain pipe joint body (7), the oil inlet pipe joint body (17) and the air inlet nozzle (22) and the air inlet nozzle (24) and the outer side of the air exhaust nozzle (13) is connected with the outer cover plate (13).
  2. 2. The graphite seal ring leakage measuring device according to claim 1, wherein an outer boss (20) and two flat tables (23) are arranged on the outer side wall of the flywheel disc (5), and the two flat tables (23) are symmetrically arranged along the diameter of the flywheel disc (5).
  3. 3. The graphite seal ring leakage measurement device is characterized in that the shell (8) comprises a cylindrical oil gas input cavity (11) and a cylindrical oil gas output cavity (12) which are integrally formed, the diameter length of the oil gas input cavity (11) is smaller than that of the oil gas output cavity (12), an oil discharge pipe joint body (7), an oil inlet pipe joint body (17), an air inlet nozzle (22) and an air outlet nozzle (24) are fixedly inserted into the outer side wall of the oil gas input cavity (11), an oil return nozzle (19) is fixedly inserted into the outer side wall of the oil gas output cavity (12), the outer end face of the oil gas input cavity (11) is detachably and fixedly connected with the right cover plate (4), the outer end face of the oil gas output cavity (12) is detachably and fixedly connected with the left cover plate (9), and threaded mounting holes are formed in the inner walls of transfer step surfaces of the oil gas input cavity (11) and the oil gas output cavity (12).
  4. 4. A graphite seal ring leakage measuring device according to claim 3, wherein the outer wall of the oil gas input cavity (11) is provided with two observation holes (14), and an observation window (15) is fixed in each observation hole (14).
  5. 5. A graphite seal ring leakage measuring device according to claim 4, wherein each of said observation windows (15) is made of high strength glass.
  6. 6. The graphite seal ring leakage measuring device according to claim 1, wherein the inner end surface of the right cover plate (4) is provided with a first weight reducing groove (16).
  7. 7. The graphite seal ring leakage measuring device according to claim 1, wherein the left end face and the right end face of the flywheel disc (5) are provided with weight reducing grooves II (6).
  8. 8. A measuring method of a graphite seal ring leakage amount measuring device according to any one of claims 1 to 7, characterized by comprising the steps of: s1, sleeving a sealing runway (10) of a part on the outer diameter of a flywheel disc (5); s2, mounting the graphite sealing ring (18) into a threaded mounting hole on the inner wall of the transfer step surface of the shell (8), and fixing the graphite sealing ring (18) after the sealing end surface of the graphite sealing ring (18) is attached to the sealing end surface of the sealing runway (10); S3, horizontally mounting the measuring device on a test bed, and fixedly connecting a transmission shaft (1) with an output shaft of a motor of the test bed; S4, connecting the oil supply pipe joint body (17) with an oil supply device, and enabling the output end of the oil supply pipe joint body (17) to directionally spray test oil in the oil gas input cavity (11) to the sealing runway (10); s5, connecting the output end of the oil drain pipe joint body (7) with an automatic liquid draining device to ensure the drainage of redundant oil; S6, connecting an air inlet nozzle (22) with an air supply device, and inputting clean high-pressure air into an oil gas input cavity (11); S7, connecting an exhaust air tap (24) with an automatic adjusting device, and automatically exhausting air when the air pressure in the oil gas input cavity (11) is greater than the set pressure; s8, connecting an oil return nozzle (19) with an oil pipe (21), and connecting the oil pipe (21) into a measuring cup; S9, a motor of the test bed rotates to drive a transmission shaft (1) provided with a sealing runway (10) to rotate, and the actual use state of the sealing runway (10) and a graphite sealing ring (18) is simulated; and S10, measuring the volume of the oil flowing out in a specified time after the oil flows out from the oil return nozzle (19) to finish the measurement of the leakage quantity.

Description

Graphite sealing ring leakage measuring device and measuring method thereof Technical Field The invention relates to a graphite sealing ring leakage measuring device and a measuring method thereof, belonging to the technical field of part detection. Background Graphite seal rings are often used as key components of mechanical seals to form a physical barrier between two relatively moving components (e.g., between a rotating shaft and a stationary housing), the core function of which is to prevent or minimize leakage of working medium (e.g., liquid or gas) from the high pressure side to the low pressure side. In the processing and manufacturing flow of the graphite sealing ring, whether the sealing performance meets the design requirement is verified through a leakage performance test so as to ensure the reliability of subsequent batch processing. However, in the prior art, the leakage amount measurement of the graphite sealing assembly mainly depends on an external entrusting test manufacturer to perform leakage amount test, namely after the graphite ring is processed, a sample is required to be sent to a test mechanism with professional equipment for detection, and after the test manufacturer has a test result, the subsequent production or improvement retry is determined according to whether the sample is qualified or not. This mode has the following technical problems: first, the long period of the external commissioning test results in an uncontrollable production cycle. Because the test is dependent on the arrangement period and the detection flow of an external mechanism, when the test result is unqualified, the design is required to be improved again and the test is sent out again, and the repeated process obviously prolongs the research and development and production period of scientific research products and directly influences the delivery schedule of the products. Second, the external commission test is costly. External test institutions typically collect high inspection fees and multiple retries can further add up costs, resulting in an increase in the overall cost of the graphite seal assembly, impairing its market competitiveness. Finally, the external delegation test procedure was not observable. Because the test is completed in an external mechanism, research and development staff cannot directly observe the test process, and when the test result is abnormal, the problem source is difficult to quickly locate, the opportunity for finding design defects or process problems can be missed, and the product quality improvement efficiency is affected. Disclosure of Invention In order to solve the problems in the background technology, the invention provides a graphite sealing ring leakage measuring device and a measuring method thereof. The graphite sealing ring leakage measuring device comprises a transmission shaft, an oil drain pipe right cover plate, an oil drain pipe connector body, a shell, a left cover plate, an outer cover plate, an oil inlet pipe connector body, an oil return nozzle, an air inlet nozzle and an air exhaust nozzle, wherein the left end and the right end of the shell are respectively connected with the left cover plate and the right cover plate, the outer side wall of the shell is respectively connected with the oil drain pipe connector body, the oil return nozzle, the air inlet nozzle and the air exhaust nozzle in an inserting and communicating mode, the output end of the transmission shaft extends into the shell and is respectively connected with the left cover plate and the right cover plate in a rotating mode, a flywheel disc is fixedly sleeved on the outer side of the output end of the transmission shaft, the flywheel disc is arranged in the shell and is positioned between the oil return nozzle and the oil drain pipe connector body, the oil inlet pipe connector body, the air inlet nozzle and the air exhaust nozzle, and the outer cover plate is connected. Further, the outer side wall of the flywheel disc is provided with an outer boss and two flat tables, and the two flat tables are symmetrically arranged along the diameter of the flywheel disc. Further, the shell comprises a cylindrical oil gas input cavity and a cylindrical oil gas output cavity which are integrally formed, the diameter length of the oil gas input cavity is smaller than that of the oil gas output cavity, an oil discharge pipe connector body, an oil inlet pipe connector body, an air inlet air tap and an air exhaust air tap are fixedly inserted into the outer side wall of the oil gas input cavity, an oil return nozzle is fixedly inserted into the outer side wall of the oil gas output cavity, the outer end face of the oil gas input cavity is detachably and fixedly connected with a right cover plate, the outer end face of the oil gas output cavity is detachably and fixedly connected with a left cover plate, and a threaded mounting hole is formed in the inner wall of a step surface for switching the oil gas i