CN110646130A - Motor dragging type explosion-proof motor explosion pressure measuring test device and method - Google Patents
Motor dragging type explosion-proof motor explosion pressure measuring test device and method Download PDFInfo
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- CN110646130A CN110646130A CN201910918861.0A CN201910918861A CN110646130A CN 110646130 A CN110646130 A CN 110646130A CN 201910918861 A CN201910918861 A CN 201910918861A CN 110646130 A CN110646130 A CN 110646130A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/14—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force of explosions; for measuring the energy of projectiles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
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Abstract
The invention relates to a motor dragging type explosion-proof motor explosion pressure measuring test device and a method, wherein the device comprises a power cable leading-in device, a low-voltage grade dragging motor, a connecting piece, a high-voltage grade tested motor, an explosion-proof test groove, a supporting platform, a dragging motor height adjusting bracket, a power cable, a pressing device, a cable sealing ring and an explosion-proof test groove base; the method is characterized in that the high-voltage-level tested motor is driven by supplying power to the low-voltage-level dragging motor, so that the high-voltage-level tested motor can be tested in a rotating state. The invention can obviously reduce the requirement on a test power distribution source and improve the construction efficiency of the explosion-proof shell voltage-withstanding test device.
Description
Technical Field
The application belongs to the technical field of explosion-proof motor shell pressure test, and particularly relates to a motor dragging type explosion-proof motor explosion pressure measurement test device and method.
Background
The explosion-proof electrical equipment is electrical equipment with an explosion-proof shell, and the explosion-proof mark is d. The explosion-proof shell is a shell which can bear the internal explosion pressure and can prevent explosion flame from spreading to the surrounding environment. The shell pressure test in the type test of the explosion-proof motor comprises an explosion pressure (reference pressure) measurement and an overpressure test, wherein the explosion pressure measurement needs to be carried out in a static state and a rotating state. The measurement of the explosion pressure is directly related to the pressure value of the overvoltage test, when the explosion pressure of the motor is measured in a rotating state, the measurement is often realized by directly driving the tested motor through a power supply, and when the power supply is directly driven, the tested motor adopting an equivalent winding substitution model cannot be driven. When the laboratory does not have high-voltage power distribution of more than 6kV, 10kV and the like, the explosion pressure measurement of the tested motor in a rotating state cannot be carried out.
Disclosure of Invention
The invention provides a testing device and a testing method for testing explosion pressure of a motor dragging type explosion-proof motor, which are used for meeting testing requirements.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides a motor drags formula flame proof type motor explosion pressure survey test device, includes explosion proof test groove, sets up at the inside test device of explosion proof test groove, the power cable introducing device who is connected with test device, wherein:
the test device comprises a supporting platform arranged in the explosion-proof test groove, a dragging motor height adjusting bracket arranged on the supporting platform, a low-voltage level dragging motor arranged on the dragging motor height adjusting bracket, a connecting piece connected with the low-voltage level dragging motor, and a high-voltage level tested motor connected with the connecting piece and arranged on the supporting platform;
the power cable leading-in device comprises an explosion-proof test groove base, a cable sealing ring, a pressing device and a power cable, wherein the explosion-proof test groove base is arranged on the outer wall of the explosion-proof test groove in a sealing mode, the cable sealing ring is arranged in the explosion-proof test groove base, the pressing device is arranged outside the cable sealing ring and is in sealing fit with the outer edges of the explosion-proof test groove base and the cable sealing ring, the power cable is connected with the low-voltage-level dragging motor, and the power cable sequentially penetrates through the pressing device, the cable sealing ring and the explosion-proof.
The technical scheme of the invention is further improved as follows: the connecting piece is a coupler, and the dragging motor height adjusting support is a supporting block or a crossed folding rod.
The technical scheme of the invention is further improved as follows: the rated voltage grades provided by the power cable lead-in device are 380V, 660V and 1140V, and the rated voltage of the high-voltage-grade tested motor is 380V-10kV (the high-voltage-grade tested motor contains the same voltage, and the maximum voltage is 10 kV).
The device is utilized, a low-voltage-level dragging motor connected with a high-voltage-level tested motor is arranged, and the high-voltage-level tested motor is driven by supplying power to the low-voltage-level dragging motor, so that the high-voltage-level tested motor can be tested in a rotating state.
The technical scheme of the invention is further improved as follows: the method comprises the following steps:
A. selecting a low-voltage level dragging motor with the same motor level number as that of the high-voltage level tested motor, connecting the low-voltage level dragging motor with a power cable on the premise that the insulation resistance meets the standard requirement, and carrying out no-load test operation on the low-voltage level dragging motor;
B. when the low-voltage level dragging motor runs perfectly in no-load operation, the center height of the low-voltage level dragging motor is kept the same as that of the high-voltage level tested motor by selecting a proper dragging motor height adjusting bracket;
C. connecting a low-voltage level dragging motor with a high-voltage level tested motor through a connecting piece;
D. and electrifying the low-voltage-level dragging motor again, measuring the rotating speed of the high-voltage-level tested motor, and closing the explosion-proof test groove to perform an explosion pressure determination test if the rotating speed of the high-voltage-level tested motor is not lower than 90% of the rated rotating speed.
The technical scheme of the invention is further improved as follows: the high voltage class tested motor winding may employ an equivalent surrogate model.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the invention adopts the dragging motor to drive the tested motor to measure the explosion pressure in the rotating state, solves the problem that the tested motor with high voltage level cannot measure the explosion pressure in the rotating state under the condition of insufficient power distribution capability of a laboratory, and also solves the problem that the tested motor cannot measure the explosion pressure in the rotating state under the condition that the winding of the tested motor adopts an equivalent substitution model. The requirement on laboratory power distribution is obviously reduced, and the risk coefficient of the test in a high-voltage state is also reduced.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic view of a power cable lead-in apparatus according to the present invention;
FIG. 3 is a schematic view of the direct drive rotation of the low voltage class motor under test according to the present invention;
wherein: 1. power cable introducing device, 2, low voltage level drag the motor, 3, connecting piece, 4, high voltage level are tried the motor, 5, explosion-proof test groove, 6, supporting platform, 7, drag motor height adjustment support, 8, power cable, 9, closing device, 10, cable seal, 11, explosion-proof test groove base.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention discloses a motor dragging type explosion-proof motor explosion pressure measuring test device, which comprises an explosion-proof test groove 5, a test device arranged in the explosion-proof test groove 5 and a power cable leading-in device 1 connected with the test device, wherein:
the testing device comprises a supporting platform 6 arranged in an explosion-proof test groove 5, a dragging motor height adjusting bracket 7 arranged on the supporting platform 6, a low-voltage level dragging motor 2 arranged on the dragging motor height adjusting bracket 7, a connecting piece 3 connected with the low-voltage level dragging motor 2, and a high-voltage level tested motor 4 connected with the connecting piece 3 and arranged on the supporting platform 6;
the power cable leading-in device 1 comprises an explosion-proof test groove base 11 which is arranged on the outer wall of an explosion-proof test groove 5 in a sealing mode, a cable sealing ring 10 which is arranged in the explosion-proof test groove base 11, a pressing device 9 which is arranged outside the cable sealing ring 10 and is in sealing fit with the outer edges of the explosion-proof test groove base 11 and the cable sealing ring 10, and a power cable 8 which is connected with the low-voltage-level dragging motor 2, wherein the power cable 8 sequentially penetrates through the pressing device 9, and the cable sealing ring 10 and the explosion-proof test groove base 11 are connected with the low-voltage-level dragging motor 2.
The connecting piece 3 is a coupler, and the dragging motor height adjusting bracket 7 is a supporting block or a cross folding rod.
The rated voltage grades provided by the power cable lead-in device 1 are 380V, 660V and 1140V, and the rated voltage of the high-voltage-grade tested motor 4 is 380V-10kV (the high-voltage-grade tested motor contains the same voltage, namely 10kV at most).
A motor dragging type explosion-proof motor explosion pressure measuring test method utilizes the device, a low-voltage level dragging motor 2 connected with a high-voltage level tested motor 4 is arranged, and the high-voltage level tested motor 4 is driven by supplying power to the low-voltage level dragging motor 2, so that the high-voltage level tested motor 4 can be tested in a rotating state.
The method comprises the following steps:
A. selecting a low-voltage level dragging motor 2 with the same motor level as the high-voltage level tested motor 4 (for example, the motor level is 4, and the motor level is related to the rotating speed), connecting the low-voltage level dragging motor 2 with a power cable 8 on the premise that the insulation resistance meets the standard requirement, and performing no-load test operation on the low-voltage level dragging motor 2;
B. when the low-voltage level dragging motor 2 runs perfectly in no-load operation, the center height of the low-voltage level dragging motor is kept the same as that of the high-voltage level tested motor 4 by selecting a proper dragging motor height adjusting bracket 7;
C. the low-voltage level dragging motor 2 is connected with the high-voltage level tested motor 4 through a connecting piece;
D. and electrifying the low-voltage-level dragging motor 2 again, measuring the rotating speed of the high-voltage-level tested motor 4, and closing the explosion-proof test groove 5 for an explosion pressure measurement test if the rotating speed of the high-voltage-level tested motor 4 is not lower than 90% of the rated rotating speed.
The windings of the tested motor 4 with high voltage level can adopt an equivalent substitution model.
The working process and principle of the invention patent are as follows:
the high-voltage-level tested motor cannot be directly driven by a power supply to measure the explosion pressure in a rotating state on the premise of insufficient power distribution in a laboratory, and meanwhile, the tested motor cannot be directly driven by the power supply to measure the explosion pressure in the rotating state on the premise of adopting an equivalent substitution model. The invention adopts a laboratory power supply to drive a low-voltage level dragging motor, and drives a tested motor by the dragging motor, so that the explosion pressure can be measured in a rotating state.
Compared with the prior art, this patent realizes through dragging the motor that the motor under test can carry out explosion pressure survey under the rotating condition. Through increasing power cable induction system at explosion-proof test groove tip, guarantee that the inside explosive gas of explosion-proof test groove does not propagate to under the outside prerequisite of explosion-proof test groove, realize the introduction of power supply. The power supply is connected with the dragging motor, and the rotation of the dragging motor is utilized to drive the tested motor, so that the tested motor can be in a rotation state of not less than 90% of the rated rotation speed to measure the explosion pressure. According to the patent, the motor driven by the low-voltage-level dragging motor to drive the high-voltage-level tested motor is realized, so that the high-voltage-level tested motor can also perform an explosion pressure measurement test in a rotating state on the basis of only low-voltage power distribution in a laboratory. The patent also realizes the explosion pressure measuring test of the tested motor winding under the rotating state when an equivalent substitution model is adopted.
Claims (6)
1. The utility model provides a motor drags formula flame proof type motor explosion pressure survey test device which characterized in that: including explosion-proof test groove (5), set up at the inside test device of explosion-proof test groove (5), power cable introducing device (1) of being connected with test device, wherein:
the testing device comprises a supporting platform (6) arranged in an explosion-proof test groove (5), a dragging motor height adjusting bracket (7) arranged on the supporting platform (6), a low-voltage level dragging motor (2) arranged on the dragging motor height adjusting bracket (7), a connecting piece (3) connected with the low-voltage level dragging motor (2), and a high-voltage level tested motor (4) which is connected with the connecting piece (3) and arranged on the supporting platform (6);
the power cable leading-in device (1) comprises an explosion-proof test groove base (11) which is arranged on the outer wall of an explosion-proof test groove (5) in a sealing mode, a cable sealing ring (10) which is arranged in the explosion-proof test groove base (11), a pressing device (9) which is arranged outside the cable sealing ring (10) and is in sealing fit with the outer edges of the explosion-proof test groove base (11) and the cable sealing ring (10), and a power cable (8) which is connected with a low-voltage level dragging motor (2), wherein the power cable (8) sequentially penetrates through the pressing device (9), and the cable sealing ring (10) and the explosion-proof test groove base (11) are connected with the low-voltage level dragging motor (2).
2. The testing device for measuring the explosion pressure of the motor dragging type explosion-proof motor according to claim 1, which is characterized in that: the connecting piece (3) is a coupler, and the dragging motor height adjusting bracket (7) is a supporting block or a cross folding rod.
3. The testing device for measuring the explosion pressure of the motor dragging type explosion-proof motor according to claim 2, is characterized in that: the rated voltage grades provided by the power cable lead-in device (1) are 380V, 660V and 1140V, and the rated voltage of the high-voltage-grade tested motor (4) is 380V-10 kV.
4. A test method for measuring explosion pressure of a motor dragging type explosion-proof motor utilizes the device of any one of the claims 1-3, and is characterized in that: the low-voltage level dragging motor (2) connected with the high-voltage level tested motor (4) is arranged, and the high-voltage level tested motor (4) is driven by supplying power to the low-voltage level dragging motor (2), so that the high-voltage level tested motor (4) can be tested in a rotating state.
5. The motor dragging type explosion-proof motor explosion pressure measuring test method according to claim 4, characterized by comprising the following steps:
A. selecting a low-voltage level dragging motor (2) with the same motor level number as the high-voltage level tested motor (4), connecting the low-voltage level dragging motor (2) with a power cable (8) on the premise that the insulation resistance meets the standard requirement, and performing no-load test operation on the low-voltage level dragging motor (2);
B. when the low-voltage-level dragging motor (2) runs well in a no-load mode, the center height of the low-voltage-level dragging motor is kept the same as that of the high-voltage-level tested motor (4) by selecting a proper dragging motor height adjusting support (7);
C. the low-voltage level dragging motor (2) is connected with the high-voltage level tested motor (4) through a connecting piece;
D. and electrifying the low-voltage-level dragging motor (2) again, measuring the rotating speed of the high-voltage-level tested motor (4), and closing the explosion-proof test groove (5) to perform an explosion pressure determination test if the rotating speed of the high-voltage-level tested motor (4) is not lower than 90% of the rated rotating speed.
6. The motor dragging type explosion-proof motor explosion pressure measurement test method according to claim 5, characterized in that: the windings of the tested motor (4) with high voltage level can adopt an equivalent substitution model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910918861.0A CN110646130A (en) | 2019-09-26 | 2019-09-26 | Motor dragging type explosion-proof motor explosion pressure measuring test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910918861.0A CN110646130A (en) | 2019-09-26 | 2019-09-26 | Motor dragging type explosion-proof motor explosion pressure measuring test device and method |
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| Publication Number | Publication Date |
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| CN110646130A true CN110646130A (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910918861.0A Withdrawn CN110646130A (en) | 2019-09-26 | 2019-09-26 | Motor dragging type explosion-proof motor explosion pressure measuring test device and method |
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| CN (1) | CN110646130A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458373A (en) * | 2020-05-29 | 2020-07-28 | 上海煤科检测技术有限公司 | Explosion-proof performance testing device and testing method for explosion-proof permanent magnet electric roller |
| CN113670733A (en) * | 2021-07-15 | 2021-11-19 | 安标国家矿用产品安全标志中心有限公司 | Permanent magnet electric roller reference pressure measuring device and measuring method |
| CN114371085A (en) * | 2021-12-29 | 2022-04-19 | 宁夏西北骏马电机制造股份有限公司 | Explosion experiment method for explosion-proof motor |
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Cited By (5)
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| CN111458373A (en) * | 2020-05-29 | 2020-07-28 | 上海煤科检测技术有限公司 | Explosion-proof performance testing device and testing method for explosion-proof permanent magnet electric roller |
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| CN114371085A (en) * | 2021-12-29 | 2022-04-19 | 宁夏西北骏马电机制造股份有限公司 | Explosion experiment method for explosion-proof motor |
| CN114371085B (en) * | 2021-12-29 | 2024-03-29 | 宁夏西北骏马电机制造股份有限公司 | Explosion experiment method for explosion-proof motor |
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Application publication date: 20200103 |