Universal mechanical seal sealing detection device

Abstract

The utility model discloses a general mechanical seal sealing detection device, which comprises a detection cylinder body and a mandrel vertically penetrating through the detection cylinder body, a detection cavity is arranged in the detection cylinder body, a mechanical seal mounting flange is fixedly connected above the detection cylinder body, the mandrel penetrates through the mechanical seal mounting flange, and a mechanical seal false shaft sleeve is sleeved on the mandrel positioned in the detection cylinder body. A pressing mechanism is installed on one side face of the detection cylinder body. The general mechanical seal sealing detection device of the utility model can meet the requirement of simulating the working condition to detect the sealing quality before use, can detect different types of mechanical seals, is convenient and reliable to use, simple in structure and low in cost, and has higher practical value and economic value; universal wheels and a platen groove are arranged at the bottom of the detection cylinder body, the use is flexible, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical seal quality detection, and in particular relates to a universal mechanical seal detection device. Background Art

[0002] Mechanical seals are mainly used for shaft sealing of rotating equipment to seal the leakage of media between the rotating part and the stationary part. Because the sealing quality of mechanical seals is affected by the aging of the main seal and the auxiliary seal, it is not fixed that the sealing effect will remain unchanged when it leaves the factory. The sealing quality of existing mechanical seals is completely dependent on the factory quality card. Since the user unit does not have special testing equipment, it generally does not conduct working condition simulation testing before subsequent installation. It is easy to have leakage rework after replacing and installing a new mechanical seal, and the quality of mechanical seal installation cannot be reliably controlled. Because the replacement and installation of mechanical seals requires the return of system equipment, especially for large rotating equipment, there is a lot of auxiliary installation work, so it is necessary to ensure a successful installation at one time to avoid safety hazards and economic losses of repeated return of the system; therefore, it is very necessary to conduct a simulated working condition pressure test on the sealing quality of the mechanical seal before installation. Utility Model Content

[0003] The purpose of the utility model is to provide a universal mechanical seal detection device, which solves the problem that there is no special detection equipment before the mechanical seal is installed, and the quality of the mechanical seal installation cannot be reliably controlled.

[0004] The technical scheme adopted by the utility model is a universal mechanical seal detection device, comprising a detection cylinder body and a core shaft vertically penetrating the detection cylinder body, a detection cavity is provided in the detection cylinder body, a mechanical seal mounting flange is fixedly connected to the top of the detection cylinder body, the core shaft penetrates the mechanical seal mounting flange, a mechanical seal dummy shaft sleeve is sleeved on the core shaft located in the detection cylinder body, and a pressing mechanism is installed on one side of the detection cylinder body.

[0005] The utility model is also characterized in that:

[0006] A table plate is fixedly connected to the bottom of the detection cylinder body, and a table plate groove is opened on the table plate.

[0007] A plurality of universal wheels are fixedly connected to the bottom of the table.

[0008] The detection cylinder body is a coverless structure. The top of the detection cylinder body is connected to the mechanical seal mounting flange by bolts. A center hole matching the core shaft is opened at the bottom of the detection cylinder body. The core shaft passes through the center hole and is fastened to the bottom of the detection cylinder body by a nut.

[0009] The pressure-beating mechanism comprises a medium injection port opened on the side wall of the detection cylinder body, the medium injection port is connected with a pressure-beating pipe, and a pressure gauge and a valve are installed on the pressure-beating pipe.

[0010] The machine seal to be tested is sleeved with the machine seal dummy shaft sleeve and is fastened with the machine seal mounting flange through bolts.

[0011] The mechanical seal dummy sleeve is fastened to the core shaft by a nut.

[0012] The beneficial effects of the utility model are:

[0013] The utility model discloses a universal mechanical seal detection device, in which the mechanical seal mounting flange and the mechanical seal dummy sleeve can be replaced according to different types of mechanical seals. The utility model has a simple and reliable structure and is easy to use. The utility model can meet the requirement of simulating working conditions to detect the seal quality before use, and can detect mechanical seals of different types. The utility model has strong applicability. The seal detection is performed before the mechanical seal is installed, which saves costs and avoids the potential safety hazards and economic losses caused by the repeated return system of the mechanical seal due to unreliable quality. The utility model has high practical and economic values. The bottom of the detection cylinder body is provided with universal wheels and table grooves, which are flexible to use and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a universal mechanical seal detection device of the utility model.

[0015] In the figure, 1. test cylinder, 2. machine seal mounting flange, 3. core shaft, 4. machine seal dummy sleeve, 5. pressure pipe, 6. universal wheel, 7. medium injection port, 8. pressure gauge, 9. valve. DETAILED DESCRIPTION

[0016] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0017] Example 1

[0018] The utility model of the universal mechanical seal detection device has a structure as follows Figure 1 As shown, it includes a detection cylinder body 1 and a core shaft 3 vertically penetrating the detection cylinder body 1, the detection cylinder body 1 has a detection cavity, and a mechanical seal mounting flange 2 is connected to the top of the detection cylinder body 1 by bolts. The mechanical seal mounting flange 2 matches the size of mechanical seals of different models to be detected, can be replaced or superimposed at will, and has strong applicability; the core shaft 3 penetrates the mechanical seal mounting flange 2, and a pressing mechanism is installed on one side of the detection cylinder body 1.

[0019] The detection cylinder body 1 is a coverless structure. The top of the detection cylinder body 1 is connected to the mechanical seal mounting flange 2 by bolts. A center hole matching the core shaft 3 is opened at the bottom of the detection cylinder body 1. The core shaft 3 passes through the center hole and is fastened to the bottom of the detection cylinder body 1 by a nut.

[0020] The center hole also serves as a discharge port for replacing the medium inside the detection cylinder 1. When the detection medium needs to be replaced or discharged, the fastening nut at the bottom of the detection cylinder 1 is loosened, and the core shaft 3 is pulled out to replace or discharge the medium inside the detection cylinder 1.

[0021] The core shaft 3 in the detection cylinder 1 is sleeved with a mechanical seal dummy sleeve 4 and fastened with a nut. The mechanical seal to be detected is sleeved with the mechanical seal dummy sleeve 4 and fastened with the mechanical seal mounting flange 2 through bolts.

[0022] The mechanical seal dummy shaft sleeve 4 matches the size of mechanical seals to be tested of different models, can be replaced at will, and has strong applicability.

[0023] Example 2

[0024] On the basis of Example 1, the pressure mechanism includes a medium injection port 7 opened on the side wall of the detection cylinder 1, the medium injection port 7 is connected to a pressure pipe 5, and a valve 9 and a pressure gauge 8 are installed on the pressure pipe 5 in sequence along the medium injection direction.

[0025] The pressure mechanism is installed on the side of the detection cylinder 1. It can be pressurized according to the pressure levels of different models, and can be isolated for pressure stabilization testing. The maximum pressure can be charged to 5Mpa for testing, which basically meets the pressure levels of most industrial mechanical seals.

[0026] Example 3

[0027] On the basis of Example 2, a table is fixedly connected to the bottom of the detection cylinder body 1, and a table groove is opened on the table for placing disassembled parts to facilitate use and prevent loss.

[0028] Four universal wheels 6 are symmetrically fixed to the bottom of the table. The universal wheels 6 can facilitate the transportation and movement of the detection device and improve work efficiency.

[0029] The universal mechanical seal detection device of the utility model has the following working process:

[0030] a. Figure 1 After all parts are assembled as shown, the pressure testing medium is filled into the testing cavity from the pressure testing tube 5;

[0031] b. Put the mechanical seal to be tested directly onto the mechanical seal dummy sleeve 4 and the mechanical seal mounting flange 2, and tighten the connecting bolts;

[0032] c. Pressurize through valve 9 on pressure-pressurizing pipe 5, and after the pressure detected by pressure gauge 8 reaches the detection pressure level, perform isolation and pressure stabilization detection. If there is no leakage for 5-15 minutes, the seal is qualified;

[0033] d. For mechanical seals of different models, it is only necessary to replace the matching mechanical seal mounting flange 2 and mechanical seal dummy sleeve 4 for testing;

[0034] e. When the detection medium in the detection cylinder 1 needs to be replaced or discharged, the fastening nut of the core shaft 3 at the bottom of the detection cylinder 1 can be loosened, and the core shaft 3 can be pulled out to discharge.

[0035] f. After use, the sealing surface of the machine seal needs to be inspected and greased for protection for future use.

[0036] After use, the pressure tube 5 can be rolled up to the outside of the detection cylinder 1 for neat storage and convenient storage.

[0037] The universal mechanical seal detection device of the utility model has the following advantages: it can meet the requirement of testing the seal quality under simulated working conditions before use, detect mechanical seals of different models, and perform seal detection before the mechanical seal is installed, thus saving costs and avoiding the potential safety hazards and economic losses caused by the repeated return system of unreliable mechanical seal quality, and has high practical and economic value; universal wheels and table grooves are arranged at the bottom of the detection cylinder body, which are flexible to use and improve work efficiency.

Claims

1. Universal mechanical seal detection device, characterized in that: The invention comprises a detection cylinder body (1) and a core shaft (3) vertically penetrating the detection cylinder body (1); the detection cylinder body (1) has a detection cavity inside; an organic seal mounting flange (2) is fixedly connected to the top of the detection cylinder body (1); the core shaft (3) penetrates the organic seal mounting flange (2); an organic seal dummy shaft sleeve (4) is sleeved on the core shaft (3) located inside the detection cylinder body (1); and a pressing mechanism is installed on one side of the detection cylinder body (1).

2. The universal mechanical seal detection device according to claim 1, characterized in that: The bottom of the detection cylinder (1) is fixedly connected with a table plate, and a table plate groove is formed on the table plate.

3. The universal mechanical seal detection device according to claim 2, characterized in that: A plurality of universal wheels (6) are fixedly connected to the bottom of the platform.

4. The universal mechanical seal detection device according to claim 1, characterized in that: The detection cylinder (1) is a coverless structure. The top of the detection cylinder (1) is connected to the mechanical seal mounting flange (2) by bolts. The bottom of the detection cylinder (1) is provided with a center hole matching the core shaft. The core shaft (3) passes through the center hole and is fastened to the bottom of the detection cylinder (1) by a nut.

5. The universal mechanical seal detection device according to claim 1, characterized in that: The pressure-pressing mechanism comprises a medium injection port (7) opened on the side wall of the detection cylinder (1); the medium injection port (7) is connected to a pressure-pressing pipe (5); and a pressure gauge (8) and a valve (9) are installed on the pressure-pressing pipe.

6. The universal mechanical seal detection device according to claim 1, characterized in that: The machine seal to be tested is sleeved with the machine seal false shaft sleeve (4) and is fastened to the machine seal mounting flange (2) via bolts.

7. The universal mechanical seal detection device according to claim 1, characterized in that: The mechanical seal dummy sleeve (4) and the core shaft (3) are fastened together by a nut.

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