CN210404928U - Novel explosion-proof three-phase asynchronous motor - Google Patents
Novel explosion-proof three-phase asynchronous motor Download PDFInfo
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- CN210404928U CN210404928U CN201921340817.8U CN201921340817U CN210404928U CN 210404928 U CN210404928 U CN 210404928U CN 201921340817 U CN201921340817 U CN 201921340817U CN 210404928 U CN210404928 U CN 210404928U
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Abstract
The utility model discloses a novel explosion-proof three-phase asynchronous motor, concretely relates to motor technical field, which comprises a housin, the inboard of casing is equipped with the pivot, the both ends of pivot are rotated with the lateral wall at casing both ends respectively and are connected. The utility model discloses a be equipped with sealed piece and spiral cooling tube when producing the explosion, gaseous sealed piece rebound that promotes, L shape venthole and the inside intercommunication of installation frame, high-temperature gas passes through the inside that L shape venthole flowed in the installation frame, cool off through spiral cooling tube, unnecessary gas is discharged from first check valve, and some gas is then stayed the inner chamber of installation frame, get into the inside of casing after the motor cooling, compared with the prior art, be favorable to in time with the inside of the high-temperature gas discharge casing that the explosion produced, prevent that the motor is overheated, guarantee motor performance and life, and in order to prevent to inhale too much combustible gas from the outside, and once more produce the explosion, the security is higher.
Description
Technical Field
The utility model relates to the technical field of motors, more specifically say, the utility model relates to a novel explosion-proof three-phase asynchronous motor.
Background
The explosion-proof housing of an explosion-proof three-phase asynchronous motor is not hermetically sealed, and the surrounding explosive gas mixture can enter the interior of the motor through the gap between the joint surfaces of the parts of the housing, and can explode when contacting with a spark, an electric arc, a dangerous high temperature and other ignition source in the housing.
In the prior art, when external combustible gas enters the motor through gaps of joint surfaces of all parts of the shell, explosion is generated, a large amount of high-temperature gas is generated due to explosion, and if the high-temperature gas is not discharged in time, the motor is overheated, the performance and the service life of the motor are influenced, and the safety is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a novel explosion-proof three-phase asynchronous motor, when producing the explosion through being equipped with sealed piece and spiral cooling tube, gaseous sealed piece rebound that promotes, high-temperature gas passes through the cooling of spiral cooling tube, unnecessary gas is discharged from first check valve, and some gas is then stayed the inner chamber at the installing frame, get into the inside of casing after the motor cooling, can in time be with the inside of the high-temperature gas discharge casing that the explosion produced, prevent that the motor is overheated, guarantee motor performance and life, and in order to prevent to inhale too much combustible gas from the outside, and once more produce the explosion, the security is higher.
In order to achieve the above object, the utility model provides a following technical scheme: a novel explosion-proof three-phase asynchronous motor comprises a shell, wherein a rotating shaft is arranged on the inner side of the shell, two ends of the rotating shaft are respectively rotatably connected with side walls at two ends of the shell, a coil is sleeved on the outer side of the rotating shaft, an installation frame is arranged above the shell, the bottom end of the installation frame is fixedly connected with the outer wall of the shell, a spring is arranged at one end inside the installation frame, a sealing block is arranged below the spring, the upper end of the spring is fixedly connected with the top surface of the installation frame, the lower end of the spring is fixedly connected with the upper surface of the sealing block, the bottom end of the sealing block extends to the inner side of the shell, the side walls of the sealing block are respectively connected with the shell and the side walls of the installation frame in a sliding mode, and an;
the inner side of the mounting frame is provided with a spiral cooling pipe positioned at one side of the spring, a water inlet pipe is arranged above the mounting frame, the water outlet of the water inlet pipe is communicated with the water inlet of the spiral cooling pipe, one end of the spiral cooling pipe is provided with a T-shaped pipe which is far away from one side of the spring, the outer side wall of one end of the T-shaped pipe is fixedly connected with the inner wall of the mounting frame, a first one-way valve is arranged above the other end of the T-shaped pipe, the outer side wall of the first one-way valve is fixedly connected with the upper wall of the mounting frame, the upper end of the first one-way valve is positioned on the outer side of the mounting frame, a second one-way valve is arranged below the other end of the T-shaped pipe, the outer wall of the second one-way valve is fixedly connected with the lower wall of the mounting frame, the lower end of the second one-way valve is located on the inner side of the shell, a moving plate far away from one end of the spiral cooling pipe is arranged at one end of the T-shaped pipe, and the outer side wall of the moving plate is connected with the inner side wall of the mounting frame in a sliding mode.
In a preferred embodiment, one end of the mounting frame is provided with a vent far away from one side of the spring, one side of the moving plate is provided with a sealing gasket far away from one end of the T-shaped pipe, and one side of the sealing gasket is fixedly connected with one side of the moving plate.
In a preferred embodiment, a baffle is arranged on the inner side of the shell, one end of the baffle is fixedly connected with the bottom end of one side of the sealing block, and the other end of the baffle is positioned below the second one-way valve.
In a preferred embodiment, an end cover outside the body is equipped with first fan-shaped flowing water ring, the both ends of first fan-shaped flowing water ring respectively with the both sides fixed connection of installing frame, the first through-hole of a plurality of has been seted up to the lateral wall of first fan-shaped flowing water ring inner chamber, the inlet opening has been seted up to the one end of first fan-shaped flowing water ring.
In a preferred embodiment, one end of the water inlet hole is communicated with the water outlet of the spiral cooling pipe.
In a preferred embodiment, the outside cover of casing is equipped with the fan-shaped flowing water ring of second of keeping away from first fan-shaped flowing water ring one side, a plurality of second through-hole has been seted up to the lateral wall of the fan-shaped flowing water ring inner chamber of second, the outside of first fan-shaped flowing water ring is equipped with the outlet pipe, the inboard of outlet pipe and the inner chamber intercommunication of the fan-shaped flowing water ring of second.
In a preferred embodiment, a plurality of heat dissipation long blocks are arranged between the first fan-shaped flowing water ring and the second fan-shaped flowing water ring, and one side of each heat dissipation long block is fixedly connected with the outer wall of the shell.
In a preferred embodiment, the inner side of the heat dissipation long block is provided with a long water flowing hole, one end of the long water flowing hole is communicated with the inner cavity of the first fan-shaped water flowing ring, and the other end of the long water flowing hole is communicated with the inner cavity of the second fan-shaped water flowing ring.
The utility model discloses a technological effect and advantage:
1. the utility model discloses a be equipped with sealed piece and spiral cooling tube when producing the explosion, gaseous promotion sealed piece upwards moves, L shape venthole and the inside intercommunication of installation frame, high-temperature gas flows into the inside of installation frame through L shape venthole, through the cooling of spiral cooling tube, unnecessary gas is discharged from first check valve, and some gas is stayed the inner chamber of installation frame, get into the inside of casing after the motor cooling, compared with the prior art, be favorable to in time discharging the high-temperature gas that the explosion produced inside of casing, prevent that the motor is overheated, guarantee motor performance and life, and in order to prevent to suck too much combustible gas from the outside, and once more produce the explosion, the security is higher;
2. the utility model discloses a be equipped with first fan-shaped flowing water ring, the fan-shaped flowing water ring of second and heat dissipation rectangular block, through the heat dissipation rectangular block, can make the motor dispel the heat fast, and after the inside of first fan-shaped flowing water ring, the fan-shaped flowing water ring of second, heat dissipation rectangular block is led to into water, can further accelerate the heat dissipation of motor, compare with prior art, be favorable to the quick heat dissipation of motor, guaranteed the performance of motor, make the motor more stable.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a sectional view of the front view of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2 according to the present invention.
Fig. 4 is a schematic structural view of the first fan-shaped flowing water ring of the present invention.
Fig. 5 is a schematic structural view of a second fan-shaped flowing water ring of the present invention.
The reference signs are: the cooling structure comprises a shell 1, a rotating shaft 11, a coil 12, a mounting frame 2, a spring 3, a sealing block 4, a 41L-shaped air outlet, a spiral cooling pipe 5, a water inlet pipe 6, a T-shaped pipe 7, a first check valve 8, a second check valve 81, a movable plate 9, a vent 100, a sealing gasket 110, a baffle 120, a first fan-shaped flowing water ring 130, a first through hole 131, a water inlet hole 132, a second fan-shaped flowing water ring 140, a second through hole 141, a water outlet pipe 142, a long heat dissipation block 150 and a long flowing water hole 151.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a novel explosion-proof three-phase asynchronous motor, which comprises a shell 1, wherein the inner side of the shell 1 is provided with a rotating shaft 11, two ends of the rotating shaft 11 are respectively and rotatably connected with the side walls of two ends of the shell 1, a coil 12 is sleeved outside the rotating shaft 11, an installation frame 2 is arranged above the shell 1, the bottom end of the installation frame 2 is fixedly connected with the outer wall of the shell 1, a spring 3 is arranged at one end inside the mounting frame 2, a sealing block 4 is arranged below the spring 3, the upper end of the spring 3 is fixedly connected with the top surface of the mounting frame 2, the lower end of the spring 3 is fixedly connected with the upper surface of the sealing block 4, the bottom end of the sealing block 4 extends to the inner side of the shell 1, the side wall of the sealing block 4 is respectively connected with the shell 1 and the side wall of the mounting frame 2 in a sliding manner, and the inner side of the sealing block 4 is provided with an L-shaped air outlet 41;
the inner side of the mounting frame 2 is provided with a spiral cooling pipe 5 positioned on one side of the spring 3, a water inlet pipe 6 is arranged above the mounting frame 2, a water outlet of the water inlet pipe 6 is communicated with a water inlet of the spiral cooling pipe 5, one end of the spiral cooling pipe 5 is provided with a T-shaped pipe 7 far away from one side of the spring 3, the outer side wall of one end of the T-shaped pipe 7 is fixedly connected with the inner wall of the mounting frame 2, a first one-way valve 8 is arranged above the other end of the T-shaped pipe 7, the outer side wall of the first one-way valve 8 is fixedly connected with the upper wall of the mounting frame 2, the upper end of the first one-way valve 8 is positioned on the outer side of the mounting frame 2, a second one-way valve 81 is arranged below the other end of the T-shaped pipe 7, the outer wall of the second one-way valve 81 is fixedly connected with the lower wall of the mounting frame 2, the lower end of the, the outer side wall of the moving plate 9 is connected with the inner side wall of the mounting frame 2 in a sliding mode.
The vent 100 of keeping away from spring 3 one side is seted up to the one end of installing frame 2, one side of movable plate 9 is equipped with the sealed pad 110 of keeping away from T venturi tube 7 one end, one side of sealed pad 110 and one side fixed connection of movable plate 9.
A baffle 120 is arranged on the inner side of the shell 1, one end of the baffle 120 is fixedly connected with the bottom end of one side of the sealing block 4, and the other end of the baffle 120 is positioned below the second one-way valve 81.
As shown in fig. 1 to 3, the embodiment specifically is as follows: when the high-temperature gas generator is used, firstly, cooling water is introduced from the water inlet pipe 6, enters the interior of the spiral cooling pipe 5 and is discharged through the water outlet of the spiral cooling pipe 5, when external combustible gas enters the interior of the motor through the gap of the joint surfaces of the parts of the shell to explode, a large amount of high-temperature gas is generated, the pressure in the interior of the motor rises, and the high-temperature gas cannot be rapidly discharged due to the gap of the joint surfaces of the parts, so the high-temperature gas can push the sealing block 4 to move upwards, the L-shaped air outlet 41 is communicated with the interior of the mounting frame 2, the high-temperature gas enters the interior of the mounting frame 2 through the L-shaped air outlet 41, then passes through the spiral cooling pipe 5 and the T-shaped pipe 7, is cooled by the cooling water in the spiral cooling pipe 5 when passing through the spiral cooling pipe 5, and after passing through the, when the sealing gasket 110 contacts the vent 100, the redundant gas is exhausted from the first one-way valve 8 to the outside of the mounting frame 2, the baffle 120 is driven to move upwards after the sealing block 4 moves upwards, one end of the baffle 120 plugs the outlet of the second one-way valve 81, so that the gas cannot flow out from the first one-way valve 8, after the gas is exhausted, the sealing block 4 is pushed to move towards the inner side of the shell 1 due to the elastic force of the spring 3, the sealing block 4 drives the baffle 120 to move downwards, the L-shaped gas outlet 41 is separated from the inside of the mounting frame 2, so that the high-temperature gas generated by explosion can be exhausted from the inside of the shell 1 in time, the motor can be prevented from overheating, the performance and the service life of the motor can be ensured, the safety is high, at the moment, the pressure inside the motor is in a normal state, but a small amount of high-temperature gas still exists, and negative pressure is, the last cooled gas is sucked from the inside of the mounting frame 2 through the second one-way valve 81 to prevent too much combustible gas from being sucked from the outside and further generate explosion, and the moving plate 9 moves to one side of the second one-way valve 81 during suction.
One pot head in the casing 1 outside is equipped with first fan-shaped flowing water ring 130, the both ends of first fan-shaped flowing water ring 130 respectively with the both sides fixed connection of installing frame 2, the first through-hole 131 of a plurality of have been seted up to the lateral wall in first fan-shaped flowing water ring 130 inner chamber, inlet opening 132 has been seted up to the one end of first fan-shaped flowing water ring 130.
One end of the water inlet hole 132 is communicated with the water outlet of the spiral cooling pipe 5.
The outside cover of casing 1 is equipped with the fan-shaped flowing water ring 140 of second of keeping away from first fan-shaped flowing water ring 130 one side, a plurality of second through-hole 141 has been seted up to the lateral wall of the fan-shaped flowing water ring 140 inner chamber of second, the outside of first fan-shaped flowing water ring 130 is equipped with outlet pipe 142, the inboard of outlet pipe 142 and the inner chamber intercommunication of the fan-shaped flowing water ring 140 of second.
A plurality of heat dissipation long blocks 150 are arranged between the first fan-shaped flowing water ring 130 and the second fan-shaped flowing water ring 140, and one side of each heat dissipation long block 150 is fixedly connected with the outer wall of the shell 1.
A long water flow hole 151 is formed in the inner side of the heat dissipation long block 150, one end of the long water flow hole 151 is communicated with the inner cavity of the first fan-shaped water flow ring 130, and the other end of the long water flow hole 151 is communicated with the inner cavity of the second fan-shaped water flow ring 140;
as shown in fig. 1-2 and fig. 4-5, the embodiment is specifically as follows: in the working process of the motor, the heat radiation of the motor can be accelerated due to the arrangement of the heat radiation long block 150, the cooling water introduced from the water inlet pipe 6 flows into the first fan-shaped flowing water ring 130 through the water outlet and the water inlet hole 132 of the spiral cooling pipe 5, then injected into the interior of the long water flow hole 151 through the first through hole 131 to accelerate the cooling of the heat dissipation long block 150, so that the heat dissipation performance of the heat dissipation long block 150 is stronger, water in the long water flowing hole 151 is injected into the second fan-shaped flowing water ring 140 through the second through hole 141 to be collected and then flows out through the water outlet pipe 142, the embodiment specifically solves the problems that the motor has slow heat dissipation, especially after explosion, if the heat dissipation is not timely and fast, the service life of the motor can be greatly reduced, the heat dissipation of the motor can be further accelerated, the use performance of the motor is guaranteed, the motor is more stable, and the service life of the motor is prolonged.
The utility model discloses the theory of operation:
referring to the attached drawings 1-3 of the specification, when in use, firstly, cooling water is introduced from the water inlet pipe 6, when external combustible gas enters the motor through the gap between the joint surfaces of the parts of the shell to explode, a large amount of high-temperature gas is generated, the high-temperature gas can push the sealing block 4 and the baffle 120 to move upwards, so that the L-shaped air outlet 41 is communicated with the inside of the mounting frame 2, one end of the baffle 120 blocks the outlet of the second one-way valve 81, the high-temperature gas enters the inside of the mounting frame 2 through the L-shaped air outlet 41, then is cooled through the spiral cooling pipe 5, then passes through the T-shaped pipe 7, the cooled gas pushes the moving plate 9 to move towards the air vent 100, when the sealing gasket 110 is contacted with the air vent 100, redundant gas is discharged from the outside of the mounting frame 2 through the first one-way valve 8, is driven after the sealing block 4 moves upwards, and when the gas is discharged, the, the sealing block 4 drives the baffle 120 to move downwards, the L-shaped air outlet 41 is separated from the inside of the mounting frame 2, negative pressure is generated after a small amount of high-temperature gas in the shell 1 is cooled, and the last cooled gas is sucked from the inside of the mounting frame 2 through the second one-way valve 81, so that excessive combustible gas is prevented from being sucked from the outside and further explosion is prevented;
further, referring to fig. 1-2 and fig. 4-5 of the specification, in the working process of the motor, due to the arrangement of the heat dissipation long block 150, the heat dissipation of the motor can be accelerated, the cooling water introduced from the water inlet pipe 6 flows into the first fan-shaped flowing water ring 130 through the water outlet and the water inlet 132 of the spiral cooling pipe 5, and then flows into the long flowing water hole 151 through the first through hole 131, so that the heat dissipation long block 150 is accelerated in cooling, and thus the heat dissipation performance of the heat dissipation long block 150 is stronger, and the water in the long flowing water hole 151 flows into the second fan-shaped flowing water ring 140 through the second through hole 141 to be collected and then flows out through the water outlet pipe 142.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel explosion-proof three-phase asynchronous motor, includes casing (1), its characterized in that: the inboard of casing (1) is equipped with pivot (11), the both ends of pivot (11) are rotated with the lateral wall at casing (1) both ends respectively and are connected, the outside cover of pivot (11) is equipped with coil (12), the top of casing (1) is equipped with installing frame (2), the bottom of installing frame (2) and the outer wall fixed connection of casing (1), the inside one end of installing frame (2) is equipped with spring (3), the below of spring (3) is equipped with sealed piece (4), the upper end of spring (3) and the top surface fixed connection of installing frame (2), the lower extreme of spring (3) and the last fixed surface of sealed piece (4) are connected, the bottom of sealed piece (4) extends to the inboard of casing (1), the lateral wall of sealed piece (4) respectively with the lateral wall sliding connection of casing (1) and installing frame (2), an L-shaped air outlet (41) is formed in the inner side of the sealing block (4);
the inner side of the mounting frame (2) is provided with a spiral cooling pipe (5) positioned on one side of the spring (3), a water inlet pipe (6) is arranged above the mounting frame (2), a water outlet of the water inlet pipe (6) is communicated with a water inlet of the spiral cooling pipe (5), one end of the spiral cooling pipe (5) is provided with a T-shaped pipe (7) far away from one side of the spring (3), the outer side wall of one end of the T-shaped pipe (7) is fixedly connected with the inner wall of the mounting frame (2), a first check valve (8) is arranged above the other end of the T-shaped pipe (7), the outer side wall of the first check valve (8) is fixedly connected with the upper wall of the mounting frame (2), the upper end of the first check valve (8) is positioned on the outer side of the mounting frame (2), a second check valve (81) is arranged below the other end of the T-shaped pipe (7), the outer wall of the second check valve (81) is fixedly connected, the lower extreme of second check valve (81) is located the inboard of casing (1), the one end of T venturi tube (7) is equipped with movable plate (9) of keeping away from spiral cooling pipe (5) one end, the lateral wall of movable plate (9) and the inside wall sliding connection of installing frame (2).
2. The novel explosion-proof three-phase asynchronous motor according to claim 1, characterized in that: vent (100) of keeping away from spring (3) one side are seted up to the one end of installing frame (2), one side of movable plate (9) is equipped with sealed pad (110) of keeping away from T venturi tube (7) one end, one side of sealed pad (110) and one side fixed connection of movable plate (9).
3. The novel explosion-proof three-phase asynchronous motor according to claim 1, characterized in that: the inner side of the shell (1) is provided with a baffle (120), one end of the baffle (120) is fixedly connected with the bottom end of one side of the sealing block (4), and the other end of the baffle (120) is positioned below the second one-way valve (81).
4. The novel explosion-proof three-phase asynchronous motor according to claim 1, characterized in that: one pot head in casing (1) outside is equipped with first fan-shaped flowing water ring (130), the both ends of first fan-shaped flowing water ring (130) respectively with the both sides fixed connection of installing frame (2), a plurality of first through-hole (131) have been seted up to the lateral wall of first fan-shaped flowing water ring (130) inner chamber, inlet opening (132) have been seted up to the one end of first fan-shaped flowing water ring (130).
5. The novel explosion-proof three-phase asynchronous motor according to claim 4, characterized in that: one end of the water inlet hole (132) is communicated with the water outlet of the spiral cooling pipe (5).
6. The novel explosion-proof three-phase asynchronous motor according to claim 4, characterized in that: the outside cover of casing (1) is equipped with second fan-shaped flowing water ring (140) of keeping away from first fan-shaped flowing water ring (130) one side, a plurality of second through-hole (141) have been seted up to the lateral wall of second fan-shaped flowing water ring (140) inner chamber, the outside of first fan-shaped flowing water ring (130) is equipped with outlet pipe (142), the inboard of outlet pipe (142) communicates with the inner chamber of second fan-shaped flowing water ring (140).
7. The novel explosion-proof three-phase asynchronous motor according to claim 6, characterized in that: a plurality of heat dissipation long blocks (150) are arranged between the first fan-shaped flowing water ring (130) and the second fan-shaped flowing water ring (140), and one side of each heat dissipation long block (150) is fixedly connected with the outer wall of the shell (1).
8. The novel explosion-proof three-phase asynchronous motor according to claim 7, characterized in that: the inner side of the heat dissipation long block (150) is provided with a long water flowing hole (151), one end of the long water flowing hole (151) is communicated with the inner cavity of the first fan-shaped flowing water ring (130), and the other end of the long water flowing hole (151) is communicated with the inner cavity of the second fan-shaped flowing water ring (140).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921340817.8U CN210404928U (en) | 2019-08-19 | 2019-08-19 | Novel explosion-proof three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921340817.8U CN210404928U (en) | 2019-08-19 | 2019-08-19 | Novel explosion-proof three-phase asynchronous motor |
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| Publication Number | Publication Date |
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| CN210404928U true CN210404928U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921340817.8U Expired - Fee Related CN210404928U (en) | 2019-08-19 | 2019-08-19 | Novel explosion-proof three-phase asynchronous motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711321A (en) * | 2020-05-09 | 2020-09-25 | 南京玛格耐特智能科技有限公司 | Oil cooling speed regulation type cooling system |
| CN113421739A (en) * | 2021-06-23 | 2021-09-21 | 上海巨良电磁阀制造有限公司 | Electromagnetic coil explosion-proof shell with protection grade IP65 and highest surface temperature T6 |
-
2019
- 2019-08-19 CN CN201921340817.8U patent/CN210404928U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711321A (en) * | 2020-05-09 | 2020-09-25 | 南京玛格耐特智能科技有限公司 | Oil cooling speed regulation type cooling system |
| CN113421739A (en) * | 2021-06-23 | 2021-09-21 | 上海巨良电磁阀制造有限公司 | Electromagnetic coil explosion-proof shell with protection grade IP65 and highest surface temperature T6 |
| CN113421739B (en) * | 2021-06-23 | 2022-08-19 | 上海巨良电磁阀制造有限公司 | Electromagnetic coil explosion-proof shell with protection grade IP65 and highest surface temperature T6 |
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Granted publication date: 20200424 Termination date: 20210819 |