CN115628855A - Semi-direct drive motor sealing test platform and test method - Google Patents

Abstract

The invention discloses a semi-direct drive motor sealing test platform and a test method. The device comprises a tested motor, a water tank, a water suction hose, a water pump, an overflow valve, a water return hose, a water inlet hose, a stop valve, a pressure gauge, a first hose connector, a first ball valve, a second ball valve, a water discharge hose, a second hose connector and the like. The tested motor comprises a base, an exhaust port, a water filling port, a water discharging port, a front sealing end cover, a rear sealing blank cap, a fastening piece and a hexagon socket head cylindrical screw. The front sealing end cover is fixed on the front end face of the engine base, and the rear sealing blank cap is fixed on the outer end face of the bearing chamber of the engine base. And injecting mixed aqueous solution containing an antirust agent, a cleaning agent and red water-soluble pigment into the base through the water pump, and closing the first ball valve when the motor is filled with the aqueous solution. And after the pressure is stabilized, the reading of the pressure gauge is observed, and if the pressure drop does not exceed 0.05MPa within 15 minutes, the motor is judged to have good tightness.

Description

A semi-direct drive motor sealing test platform and test method

technical field

The invention relates to the technical field of motor testing, in particular to a semi-direct drive motor sealing test platform and a test method.

Background technique

The semi-direct drive permanent magnet motor is a hybrid electric drive device integrated with a permanent magnet motor and a planetary transmission device. It has significant advantages such as high torque density, high operating efficiency, good energy saving effect, low manufacturing cost, and low operation and maintenance cost. The upgraded product of the traditional "asynchronous motor + coupling + reducer" transmission device in the industrial field has been demonstrated and applied in mining machinery, petroleum equipment, wind power equipment, electric vehicles and other fields with good results. The semi-direct drive permanent magnet motor has significant technical and cost advantages, and is not only suitable for equipment in the fields of metallurgy, lifting, petroleum, chemical industry, mining, environmental protection, and electric power, but also for ships, nuclear power, and rail transit. , aerospace and other high-end equipment.

At present, semi-direct drive permanent magnet motors have not been widely used in the industrial field, mainly because of the problem of easy leakage of gear oil. Insufficient sealing reliability of the machine base will not only reduce the performance of the equipment, but also cause oil leakage at the motor shaft end, causing environmental pollution. Using the traditional soaking test (such as the water test method) to test the airtightness of the motor is inefficient, the test results are not intuitive, it is easy to rust, the process is complicated, and the data cannot be quantified, so it is difficult to track the leak point and check for leaks.

Contents of the invention

The purpose of the present invention is to provide a semi-direct drive motor sealing platform and test method to solve the problems raised in the above-mentioned background technology.

To achieve the above object, according to one aspect of the present invention, a semi-direct drive motor sealing test platform is provided. The semi-direct drive motor sealing test platform includes a test device and a tested motor (1).

Wherein, the test platform includes a water tank (2), a suction hose (3), a water pump (4), an overflow valve (5), a water return hose (6), a water inlet hose (7), a shut-off valve ( 8), pressure gauge (9), first hose connector (10), first ball valve (11), second ball valve (12), drain hose (13) and second hose connector (14).

The motor under test (1) comprises a support (101), an exhaust port (102), a water injection port (103), a drain port (104), a front sealing end cover (105), a rear sealing cover (106), Fasteners (107) and socket head cap screws (108).

Wherein, the water tank (2), suction hose (3), water pump (4), overflow valve (5), water inlet hose (7), stop valve (8) and pressure gauge (9) and the first The hose connectors (10) are sequentially connected to form a water injection pipeline, and the first hose connector (10) is used to connect with the water injection port (103) of the motor under test (1), so as to inject water into the measured motor (1). inside the motor (1).

The second hose connector (14), the second ball valve (12) and the drain hose (13) are connected in sequence to form a drain pipeline, and the second hose connector (14) is used to connect with the motor under test (1 ) to the drain port (104) to discharge the water from the motor under test (1).

The first ball valve (11) is connected with the exhaust port (102) to form an exhaust device, and the first ball valve (11) is used to be connected with the exhaust port (102) of the motor (1) under test for Bleed out the air in the housing cavity.

The water injection port (103) is arranged on the front sealing end cover (105).

The exhaust port (102) is arranged at the top of the machine base (101), and the drain port (104) is arranged at the bottom of the machine base (101).

The front sealing end cover (105) and the rear sealing cover (106) are flanged; the joint surfaces of the front sealing end cover (105) and the rear sealing cover (106) are all coated with sealant.

The water suction hose (3), the water return hose (6), the water inlet hose (7) and the drainage hose (13) are all transparent PVC hoses.

The water tank (2) is used for storing the mixed aqueous solution, and the mixed aqueous solution is used as a pressure medium for the sealing test.

Further, the mixed aqueous solution is added with antirust agent, cleaning agent and red water-soluble pigment.

According to another aspect of the present invention, a kind of test method of semi-direct drive motor sealing test platform is proposed, comprises the following steps successively:

S1, smear anti-rust oil on the contact surface of machine base (101), front sealing end cover (105), rear sealing stuffy cover (106) and water to avoid rust; the specific material of anti-rust oil can be selected according to needs, In the present invention, 204-1 antirust oil is preferably used.

S2. Apply sealant on the seam surfaces of the front sealing end cover (105) and the rear sealing cover (106), and fix the front sealing end cover (105) on the seat of the machine base (101) through fasteners (107) On the front end face, the rear sealing stuffy cover (106) is fixed on the outdoor end face of the support (101) bearing by hexagon socket head cylindrical screws (108).

S3, sequentially connect the first hose joint (10) and the water injection port (103), the second hose joint (14) and the drain port (104), and the first ball valve (11) and the exhaust port (102).

S4. Inject the mixed aqueous solution containing antirust agent, cleaning agent and red water-soluble pigment into the water tank (2).

S5, open overflow valve (5), shut-off valve (8), first ball valve (11) and water pump (4) in turn, inject described mixed aqueous solution in support (101) by water pump (4), wait for the first Ball valve (11) has water to overflow, promptly mixed aqueous solution fills up the base cavity, closes the first ball valve (11) this moment.

S6, the water pump (4) continues to pressurize, the pressurization time is not less than 10 minutes, observe the reading of the pressure gauge (9); after the pressure of the reading of the pressure gauge (9) rises to the test pressure of 0.8MPa, stop the pressurization , Observe whether there is leakage at each interface part.

S7. After stabilizing the pressure for 1 hour, add pressure to the test pressure of 0.8MPa; within 15 minutes, observe the reading of the pressure gauge (9), if the pressure drop does not exceed 0.05MPa, it is determined that the airtightness of the base (101) is good.

S8. After the test, open the second ball valve (12), after the mixed aqueous solution in the standby seat (101) and the drain hose (13) completely flows back into the water tank (2), remove the front sealing end cover (105), the rear sealing Blind cover (106), first hose connector (10), first ball valve (11) and second hose connector (14).

S9. Wipe the tested motor (1) and its components clean, put them into an oven for drying, and apply anti-rust oil on the processing surface after drying.

Description of drawings

Fig. 1 is a kind of semi-direct drive motor seal test device structure schematic diagram provided by the present invention;

Fig. 2 is a structural schematic diagram of the motor under test provided by the present invention.

In the figure: 1, the motor under test; 101 machine base; 102 exhaust port; 103, water injection port; 104, drain port; 105, front sealing end cover; 106, rear sealing stuffy cover; 2. Water tank; 3. Suction pipe; 4. Water pump; 5. Overflow valve; 6. Return water hose; 7. Water pressure pipe; 8. Stop valve; 9. Pressure gauge; 10. No. A hose joint; 11, the first ball valve; 12, the second ball valve; 13, the drainage hose; 14, the second hose joint.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

The invention proposes a semi-direct drive motor sealing test platform and a test method.

First, the semi-direct drive motor sealing test platform proposed by the present invention is described in detail below.

Referring to Fig. 1 and Fig. 2, the semi-direct drive motor sealing test platform includes a test device and a motor under test (1). Wherein, the semi-direct drive motor sealing test platform includes a water tank (2), a water suction hose (3), a water pump (4), an overflow valve (5), a water return hose (6), and a water inlet hose (7). ), shut-off valve (8), pressure gauge (9), first hose connector (10), first ball valve (11), second ball valve (12), drain hose (13) and second hose connector ( 14).

The motor under test (1) comprises a support (101), an exhaust port (102), a water injection port (103), a drain port (104), a front sealing end cover (105), a rear sealing cover (106), Fasteners (107) and socket head cap screws (108).

Wherein, the water tank (2), suction hose (3), water pump (4), overflow valve (5), water inlet hose (7), stop valve (8) and pressure gauge (9) and the first The hose connectors (10) are sequentially connected to form a water injection pipeline, and the first hose connector (10) is used to connect with the water injection port (103) of the motor under test (1), so as to inject water into the measured motor (1). inside the motor (1).

The second hose connector (14), the second ball valve (12) and the drain hose (13) are connected in sequence to form a drain pipeline, and the second hose connector (14) is used to connect with the motor under test (1 ) to the drain port (104) to discharge the water in the motor under test (1).

The first ball valve (11) is connected with the exhaust port (102) to form an exhaust device, and the first ball valve (11) is used to be connected with the exhaust port (102) of the motor (1) under test for Bleed out the air in the housing cavity.

According to the gas balance equation, the semi-direct drive motor sealing test platform satisfies the following balance equation before and after gas compression under constant temperature conditions:

P ₁ ×V ₁ =P ₂ ×V ₂

In the formula: P ₁ is the gas pressure before compression, generally the standard atmospheric pressure is 0.1MPa;

V ₁ is the cavity volume of the machine base under test, in m ³ ;

P2 is the test pressure, the unit is Pa _;

V ₂ is the gas volume when the cavity of the tested motor base reaches the specified pressure, the unit is m ³ .

If there is no exhaust device, the volume of the gas in the cavity of the machine base will be compressed to P ₁ /P ₂ times the volume of the original cavity after being pressurized by water, and it will accumulate on the top of the cavity of the machine base, which will affect the test performance. The correct judgment of the structural performance of the top of the machine base. Therefore, the first ball valve (11) is connected with the exhaust port (102) as an exhaust device to ensure that the gas in the machine base can be discharged in time.

Referring to Fig. 2, the water injection port (103) on the tested motor (1) is arranged on the front sealing end cover (105). The water injection port (103) is preferably arranged on the upper part of the front sealing end cover (105). The exhaust port (102) of the motor under test (1) is arranged on the top of the support (101); since the gas is gathered in the upper part of the cavity of the support (101), the exhaust port (102) is arranged on the support (101). 101) can facilitate the discharge of air. The drain port (104) of the motor under test (1) is arranged at the bottom of the machine base (101), and the water can be discharged conveniently by utilizing the effect of gravity.

The front sealing end cover (105) and the rear sealing cover (106) of the tested motor (1) are flanged. In order to ensure the sealing effect, sealants are applied to the seam surfaces of the front sealing end cover (105) and the rear sealing cover (106), and the type of sealant can be selected according to needs. glue. Smearing sealant on the seam surfaces of the front sealing end cover (105) and the rear sealing cover (106) has a strong pressure-resistant sealing effect, and when it is necessary to replace the front sealing end cover (105) or the rear sealing cover (106) ), installation and removal are more convenient.

Referring to Fig. 1, the water suction hose (3), return water hose (6), water inlet hose (7) and drain hose (13) of the semi-direct drive motor sealing test platform are all transparent PVC hoses; The tube is convenient for observing the state of water flow. It is economical and affordable, and is convenient to purchase. If it is damaged, it can be replaced in time to shorten the test period.

The water tank (2) of the semi-direct drive motor sealing test platform is used to store a mixed aqueous solution, which is used as a pressure medium for the sealing test. And the mixed aqueous solution is added with antirust agent, cleaning agent and red water-soluble pigment. The aqueous solution added with antirust agent and cleaning agent is selected as the pressure medium, which can clean the motor under test during the test. Add red water-soluble pigment to the mixed aqueous solution, if the motor under test fails the sealing test, the mixed aqueous solution will ooze out from the machine base. The test personnel can quickly and accurately detect the leak according to the eye-catching red water seepage position on the machine base to improve the detection efficiency.

Next, the test method of the semi-direct drive motor sealing test platform proposed by the present invention is described in detail below. The test method includes the following steps in sequence:

S1, smear anti-rust oil on the contact surface of machine base (101), front sealing end cover (105), rear sealing stuffy cover (106) and water to avoid rust; the specific material of anti-rust oil can be selected according to needs, In the present invention, 204-1 antirust oil is preferably used.

S2. Apply sealant on the seam surfaces of the front sealing end cover (105) and the rear sealing cover (106), and fix the front sealing end cover (105) on the seat of the machine base (101) through fasteners (107) On the front end face, the rear sealing cover (106) is fixed on the outdoor end face of the bearing of the machine base (101) by hexagon socket head cylindrical screws (108);

S3, sequentially connect the first hose joint (10) and the water injection port (103), the second hose joint (14) and the drain port (104), and the first ball valve (11) and the exhaust port (102);

S4, inject into the water tank (2) the mixed aqueous solution containing antirust agent, cleaning agent and red water-soluble pigment;

S5, open overflow valve (5), shut-off valve (8), first ball valve (11) and water pump (4) in turn, inject described mixed aqueous solution in support (101) by water pump (4), wait for the first Ball valve (11) has water to overflow, promptly mixed aqueous solution fills the machine base cavity, closes first ball valve (11) this moment;

S6, the water pump (4) continues to pressurize, the pressurization time is not less than 10 minutes, observe the reading of the pressure gauge (9); after the pressure of the reading of the pressure gauge (9) rises to the test pressure of 0.8MPa, stop the pressurization , observe whether there is leakage at each interface part;

S7. After stabilizing the pressure for 1 hour, add pressure to the test pressure of 0.8MPa; within 15 minutes, observe the reading of the pressure gauge (9), if the pressure drop does not exceed 0.05MPa, it is determined that the airtightness of the machine base (101) is good;

S8. After the test, open the second ball valve (12), after the mixed aqueous solution in the standby seat (101) and the drain hose (13) completely flows back into the water tank (2), remove the front sealing end cover (105), the rear sealing A stuffy cover (106), a first hose connector (10), a first ball valve (11) and a second hose connector (14);

S9. Wipe the tested motor (1) and its components clean, put them into an oven for drying, and apply anti-rust oil on the processing surface after drying. The anti-rust oil is preferably 204-1 anti-rust oil.

In summary, owing to adopting above-mentioned technology, the beneficial effect of the present invention is:

In the present invention, the structure of the test device is simple. During the test, only the front sealing end cover and the rear sealing cover are installed, and the test can be carried out after connecting the inlet and outlet pipelines and exhaust pipelines. The operation is convenient and the work efficiency is improved.

In the present invention, the water pressure is controlled by controlling the flow rate of the water pump, and the sealing performance of the motor is detected. In front of the water injection port, a pressure gauge is installed to monitor in real time whether the test pressure value is within the acceptable range.

In the present invention, the combined use of the overflow valve and the return water hose will reduce the demand for water flow when the pressure of the water pump increases. At this time, the overflow valve is opened to allow the excess water flow to overflow back to the water tank, ensuring that the water pump The outlet pressure is constant, and the aqueous solution is recycled to save water resources.

In the present invention, the aqueous solution added with antirust agent and cleaning agent is selected as the pressure medium, which can clean the motor under test to a certain extent during the test process.

In the present invention, a red water-soluble pigment is added to the aqueous solution, and if the motor sealing test fails, the leak can be detected quickly and accurately according to the striking water seepage position on the machine base, thereby improving the detection efficiency.

In the present invention, the water suction hose, the water return hose, the water inlet hose and the drainage hose all adopt transparent PVC hoses, which is convenient for observing the water flow state. It is economical and affordable, and is convenient to purchase. If it is damaged, it can be replaced in time to shorten the test period.

In the present invention, the water injection port is arranged on the front sealing end cover, which has good processability, and there is no need to provide a water injection port channel on the machine base, which improves efficiency and saves cost.

In the present invention, hose joints are used to connect, and can be replaced with matching joints according to the size of different water injection ports and drain ports, which has good interchangeability, reduces costs, and improves production efficiency.

In the present invention, the front sealing end cover and the rear sealing cover are of flange type, and sealant is applied on the sealing surface, which has a strong pressure-resistant sealing effect, and STP1921 sealant is used, which is convenient for installation and disassembly, and has good environmental protection , friendly to the human body, healthy and environmentally friendly.

In the present invention, the rear sealing cover is used to seal the bearing chamber, and the action point of the pressing force is consistent with the action point of the supporting force, thereby reducing the impact of the hydraulic test on the product quality and avoiding the workpiece with poor axial rigidity. Deformation is caused under the action of high pressure, which destroys the machining accuracy of the end cover bearing chamber.

In the present invention, a ball valve is used to connect the exhaust port and the drain port, which has good sealing performance, quick and light opening and closing, small fluid resistance, simple structure and convenient maintenance.

In the present invention, the airtightness of the motor is judged by observing whether the reading of the pressure gauge is stable, and the detection result is intuitive and easy to observe.

The solution of the present invention has been described in detail above. However, it is obvious that the implementations described above are only some of the implementations of the present invention, not all of them. The detailed descriptions of the embodiments of the invention provided above are not intended to limit the scope of the claimed invention but are merely representative of selected embodiments of the invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Claims (10)

1. A semi-direct drive motor sealing test platform, comprising a test device and a tested motor (1); is characterized in that: The test platform includes a water tank (2), a water suction hose (3), a water pump (4), an overflow valve (5), a water return hose (6), a water inlet hose (7), and a shut-off valve (8) , pressure gauge (9), first hose connector (10), first ball valve (11), second ball valve (12), drain hose (13) and second hose connector (14); The motor under test (1) comprises a support (101), an exhaust port (102), a water injection port (103), a drain port (104), a front sealing end cover (105), a rear sealing cover (106), Fasteners (107) and socket head cap screws (108). 2. A semi-direct drive motor sealing test platform as claimed in claim 1, characterized in that: wherein, the water tank (2), suction hose (3), water pump (4), overflow valve (5) , the water inlet hose (7), the stop valve (8), the pressure gauge (9) and the first hose joint (10) are sequentially connected to form a water injection pipeline, and the first hose joint (10) is used for The water injection port (103) of the tested motor (1) is connected so as to inject water into the tested motor (1). 3. A semi-direct drive motor sealing test platform as claimed in claim 2, characterized in that: the second hose joint (14), the second ball valve (12) and the drain hose (13) are sequentially connected to form A drain pipeline, and the second hose joint (14) is used to connect with the drain port (104) of the motor under test (1), so as to discharge the water of the motor under test (1). 4. A kind of semi-direct drive motor sealing test platform as claimed in claim 3, is characterized in that: described first ball valve (11) and exhaust port (102) are connected to form exhaust device, and described first ball valve ( 11) It is used to connect with the exhaust port (102) of the motor under test (1), so as to discharge the air in the cavity of the machine base. 5. A semi-direct drive motor sealing test platform as claimed in claim 4, characterized in that: the water injection port (103) is arranged on the front sealing end cover (105); the exhaust port (102) is arranged On the top of the machine base (101), the water outlet (104) is arranged at the bottom of the machine base (101). 6. A kind of semi-direct drive motor sealing test platform as claimed in claim 5, is characterized in that: said front sealing end cover (105) and rear sealing stuffy cover (106) are flange type; Said front sealing end The seam faces of lid (105) and rear sealing stuffy cover (106) are all coated with sealant. 7. A semi-direct drive motor sealing test platform as claimed in claim 6, characterized in that: said water suction hose (3), return water hose (6), water inlet hose (7) and drainage hose Pipe (13) all adopts transparent PVC hose. 8. A kind of semi-direct drive motor sealing test platform as claimed in claim 7, is characterized in that: described water tank (2) is used for storing mixed aqueous solution, and this mixed aqueous solution is used as the pressure medium of sealing test, and described mixed aqueous solution adds There are rust inhibitors, cleaning agents, and red water-soluble pigments. 9. a kind of semi-direct-drive motor sealing test platform as claimed in claim 8, is characterized in that: described semi-direct-drive motor sealing test platform is under constant temperature condition, and the cavity of the motor (1) support (101) under test The gas inside satisfies the following equilibrium equation before and after compression: P ₁ ×V ₁ =P ₂ ×V ₂ ; _In the formula: P1 is the gas pressure before compression, the unit is Pa; V ₁ is the cavity volume of the machine base under test, in m ³ ; P2 is the test pressure, the unit is Pa _; V ₂ is the gas volume when the cavity of the tested motor base reaches the specified pressure, the unit is m ³ . 10. A test method of a semi-direct drive motor sealing test platform, comprising a semi-direct drive motor sealing test platform as any one of claims 1-9; It is characterized in that: The method comprises the following steps in turn: S1, smear anti-rust oil on the contact surface of machine base (101), front sealing end cover (105), rear sealing stuffy cover (106) and water to avoid rust; the specific material of anti-rust oil can be selected according to needs, Preferably adopt 204-1 antirust oil in the present invention; S2. Apply sealant on the seam surfaces of the front sealing end cover (105) and the rear sealing cover (106), and fix the front sealing end cover (105) on the seat of the machine base (101) through fasteners (107) On the front end face, the rear sealing cover (106) is fixed on the outdoor end face of the bearing of the machine base (101) by hexagon socket head cylindrical screws (108); S3, sequentially connect the first hose joint (10) and the water injection port (103), the second hose joint (14) and the drain port (104), and the first ball valve (11) and the exhaust port (102); S4, inject into the water tank (2) the mixed aqueous solution containing antirust agent, cleaning agent and red water-soluble pigment; S5, open overflow valve (5), shut-off valve (8), first ball valve (11) and water pump (4) in turn, inject described mixed aqueous solution in support (101) by water pump (4), wait for the first Ball valve (11) has water to overflow, promptly mixed aqueous solution fills the machine base cavity, closes first ball valve (11) this moment; S6, the water pump (4) continues to pressurize, the pressurization time is not less than 10 minutes, observe the reading of the pressure gauge (9); after the pressure of the reading of the pressure gauge (9) rises to the test pressure of 0.8MPa, stop the pressurization , observe whether there is leakage at each interface part; S7. After stabilizing the pressure for 1 hour, add pressure to the test pressure of 0.8MPa; within 15 minutes, observe the reading of the pressure gauge (9), if the pressure drop does not exceed 0.05MPa, it is determined that the airtightness of the machine base (101) is good; S8. After the test, open the second ball valve (12), after the mixed aqueous solution in the standby seat (101) and the drain hose (13) completely flows back into the water tank (2), remove the front sealing end cover (105), the rear sealing A stuffy cover (106), a first hose connector (10), a first ball valve (11) and a second hose connector (14); S9. Wipe the tested motor (1) and its components clean, put them into an oven for drying, and apply anti-rust oil on the processing surface after drying.

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