Stator inner cylinder machining fixing device

Abstract

The utility model relates to the technical field of motor component machining, and particularly discloses a stator inner cylinder machining fixing device which comprises two fixing heads which are respectively located on two sides of a stator inner cylinder body. The stator inner cylinder body comprises a cylinder body, a stator iron core is installed in the cylinder body, two sealing end covers are installed in the cylinder body, the two sealing end covers are located on the two sides of the stator iron core respectively, and a stator connector is installed in the cylinder body; an inner sealing tank and an outer sealing tank are arranged in the fixing head, when the fixing head is connected with the stator inner cylinder body in an inserted mode, the outer wall of the inner sealing tank is attached to the inner wall of the stator connector, and the inner wall of the outer sealing tank is attached to the outer wall of the cylinder body. According to the utility model, the clamping power unit drives the two clamping frames and the fixing heads connected with the two clamping frames to get close to each other to clamp the stator inner cylinder body, so that whether the connection position between the sealing end cover and the cylinder body is sealed or not can be judged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor component processing technical field, concretely relates to a stator inner tube processing fixing device. BACKGROUND

[0002] The stator inner tube is a cylindrical structure used for installing and fixing the stator winding in the motor. It is usually made of cast iron or cast steel and has sufficient strength and rigidity to withstand various forces and thermal stresses during motor operation.

[0003] The submersible oilfield permanent magnet linear motor is a special motor for oil extraction in oilfield wells. In order to avoid corrosion of the stator core and other components inside the stator inner tube by oil, acid and other components during use of the motor, the stator core and other components need to be sealed with a sealing end cover.

[0004] During processing of the stator inner tube, after the sealing end cover is connected with the stator inner tube, the sealing performance of the connection between the sealing end cover and the stator inner tube needs to be detected, and the position of the stator inner tube needs to be fixed during measurement of the sealing performance. Therefore, the present application provides a stator inner tube processing fixing device which can detect the sealing performance of the connection position between the inner sealing end cover and the stator inner tube after fixing the stator inner tube. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a stator inner tube processing fixing device to solve the problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme, a stator inner tube processing fixing device, including fixed head, fixed head is provided with two, and two fixed heads are located at both sides of stator inner tube body respectively;

[0007] The stator inner tube body includes a cylinder, a stator core is installed in the cylinder, and two sealing end covers are installed in the cylinder, the two sealing end covers are located at both sides of the stator core respectively, and a stator connector is installed in the cylinder.

[0008] The fixed head is provided with an inner sealing tank and an outer sealing tank, when the fixed head is inserted with the stator inner tube body, the outer wall of the inner sealing tank is attached to the inner wall of the stator connector, and the inner wall of the outer sealing tank is attached to the outer wall of the cylinder.

[0009] The inner wall of the stator connector, the inner wall of the cylinder and the sealing end cover surround the detection cavity, the inner sealing tank is provided with a pressurized air pipe, the pressurized air pipe is connected with a pressurized pump for introducing gas into the detection cavity, and the inner sealing tank is provided with an inner air pressure detection unit for measuring the air pressure inside the detection cavity.

[0010] The fixed head is installed on the clamping frame, and two clamping frames are connected to a clamping power unit for moving closer to or away from each other.

[0011] Preferably, the inner sealing tank is provided with an inner sealing groove at the position connected with the stator joint, and an inner sealing gasket is clamped in the inner sealing groove.

[0012] Preferably, the outer sealing tank is provided with an outer sealing groove on the side attached to the outer wall of the cylinder, and an outer sealing gasket is clamped in the outer sealing groove.

[0013] Preferably, the fixed head is provided with an outer protection unit, which comprises a protection tank fixedly installed on the outer sealing tank, and a support part is arranged on the side of the protection tank away from the outer sealing tank, and the support part is attached to the outer wall of the stator inner cylinder body when the fixed head is inserted into the stator inner cylinder body.

[0014] Preferably, the protection tank is provided with a plugging air bag, which comprises an air inlet and an air outlet, and the plugging air bag, the protection tank and the outer wall of the cylinder form a protection cavity, and the protection tank is provided with an outer air pressure detection unit for measuring the air pressure in the protection cavity.

[0015] Preferably, the lower side of the stator inner cylinder body is provided with a bracket, and the bracket is provided with a crescent groove.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] Firstly, the utility model drives two clamping frames and the fixed heads connected therewith to move closer to each other by the clamping power unit, so as to clamp the stator inner cylinder body, during which the inner sealing tank and the outer sealing tank in the fixed head are inserted into the stator inner cylinder body, and the inner wall of the stator joint, the inner wall of the cylinder and the sealing end cover form a detection cavity together with the inner sealing tank and the outer sealing tank, then the pressurizing pump is started to add gas into the detection cavity, the air pressure in the detection cavity is increased, and the pressurizing pump is turned off after working for a period of time, at this time, the air pressure value detected by the inner air pressure detection unit is checked, if the air pressure does not decrease and remains stable, it indicates that there is no gap at the position where the sealing end cover is connected with the cylinder, otherwise, it indicates that there is a gap, and the sealing end cover cannot completely seal the working cavity, so as to determine whether the position where the sealing end cover is connected with the cylinder is sealed.

[0018] The utility model discloses a fixed head place sets up the outer protection unit, and the plugging air bag in its inside can expand after the air inlet, and it can be in contact with the cylinder outer wall, and with other components together around into the sealed protection cavity, if the position where the inner sealed jar, outer sealed jar connects appears the leakage condition, the gas of leakage will enter the protection cavity inside, this will lead to the air pressure of protection cavity inside promotion, according to the value of outer air pressure detection unit judges whether the position where the inner sealed jar, outer sealed jar connects leaks, the above data and the data of inner air pressure detection unit compare with each other to judge whether the connection of sealed end cover and cylinder is sealed, and the result obtained is more accurate through the comparison of two data. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic diagram of the stator inner tube processing fixing device in the utility model.

[0020] Figure 2 It is the structure schematic diagram of the stator inner tube processing fixing device in the utility model.

[0021] Figure 3 It is the internal structure schematic diagram of the stator inner tube processing fixing device in the utility model.

[0022] Figure 4 It is the structure schematic diagram of the stator inner tube processing fixing device in the utility model Figure 3 It is the structure schematic diagram of the stator inner tube processing fixing device in the utility model

[0023] Figure 5 It is the internal structure schematic diagram of the stator inner tube processing fixing device in the utility model.

[0024] Figure 6 It is the structure schematic diagram of the stator inner tube processing fixing device in the utility model Figure 5 It is the structure schematic diagram of the stator inner tube processing fixing device in the utility model

[0025] In the drawing: 1, stator inner tube body;101, cylinder;102, stator core;103, sealed end cover;104, stator joint;2, fixed head;201, inner sealed jar;202, inner sealing pad;203, outer sealed jar;204, outer sealing pad;205, pressurizing air duct;206, pressurizing pump;207, inner air pressure detection unit;3, outer protection unit;301, protection jar;302, plugging air bag;303, protection cavity;304, outer air pressure detection unit;305, support part;4, clamping frame;5, clamping power unit;6, bracket. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the present utility model.

[0027] With reference to Figures 1-6 A stator inner cylinder machining fixing device, comprising two fixing heads 2, the two fixing heads 2 are arranged on the two sides of a stator inner cylinder body 1 respectively;

[0028] It should be noted that the stator inner cylinder body 1 comprises a cylinder body 101, the cylinder body 101 is internally provided with a stator core 102, and two sealing end covers 103 are internally arranged in the cylinder body 101, the two sealing end covers 103 are arranged on the two sides of the stator core 102 respectively, the sealing end cover 103 is usually fixed between the cylinder body 101 by welding, after being fixed, the two sealing end covers 103 cooperate with the cylinder body 101 to seal the stator core 102, the above-mentioned stator inner cylinder body 1 is part of a submersible permanent magnet linear motor, and the above-mentioned motor is a motor special for oil extraction in an oilfield well, in order to avoid corrosion of the stator core 102 and other components in the motor by oil, acid and other components, the sealing end cover 103 is needed to be sealed during use of the motor.

[0029] More specifically, the cylinder body 101 is internally provided with a stator joint 104, and the stator joint 104 is arranged on the side of the sealing end cover 103 away from the middle position of the cylinder body 101.

[0030] After welding of the sealing end cover 103, it is needed to measure whether there is gas leakage at the position where the sealing end cover 103 is connected with the stator inner cylinder body 1, so as to judge whether the stator core 102 in the above-mentioned stator inner cylinder body 1 is sealed, therefore, the fixing head 2 is provided with an inner sealing tank 201 and an outer sealing tank 203, when the fixing head 2 is inserted with the stator inner cylinder body 1, the outer wall of the inner sealing tank 201 is attached to the inner wall of the stator joint 104, and the inner wall of the outer sealing tank 203 is attached to the outer wall of the cylinder body 101.

[0031] In order to avoid leakage at the position where the inner sealing tank 201 and the outer sealing tank 203 are connected with the stator inner cylinder body 1, an inner sealing groove is arranged at the position where the inner sealing tank 201 is connected with the stator joint 104, and an inner sealing gasket 202 is clamped in the inner sealing groove, and an outer sealing groove is arranged on the side of the outer sealing tank 203 attached to the outer wall of the cylinder body 101, and an outer sealing gasket 204 is clamped in the outer sealing groove.

[0032] The inner sealing gasket 202 and the outer sealing gasket 204 are arranged in the inner sealing tank 201 and the outer sealing tank 203 respectively, and the two cooperate to block one side of the barrel 101, at this time, the inner wall of the stator joint 104, the inner wall of the barrel 101, and the sealing end cover 103 are surrounded by the inner sealing tank 201 and the outer sealing tank 203 to form a detection cavity, if the sealing end cover 103 is tightly connected with the barrel 101, the above detection cavity should not be communicated with the working cavity where the stator core 102 is located, the pressurized air pipe 205 is inserted in the inner sealing tank 201, the pressurized air pipe 205 is connected with the pressurized pump 206 for introducing gas into the detection cavity, and the inner air pressure detection unit 207 for measuring the internal air pressure of the detection cavity is installed on the inner sealing tank 201;

[0033] The pressurized pump 206 adds gas to the inside of the detection cavity, the air pressure in the detection cavity increases, if there is a gap at the connection position of the sealing end cover 103 and the barrel 101, the air pressure on one side of the detection cavity increases, the speed and air volume of the gas in the detection cavity flowing to the side of the working cavity also increase, which is more convenient for subsequent detection, and the pressurized pump 206 is turned off after working for a period of time, at this time, the air pressure value detected by the inner air pressure detection unit 207 is checked, if the air pressure does not decrease and remains stable, it means that there is no gap at the connection position of the sealing end cover 103 and the barrel 101, otherwise, it means that there is a gap, and the sealing end cover 103 cannot completely seal the working cavity, so that whether the connection between the sealing end cover 103 and the barrel 101 is tight can be measured.

[0034] During the detection of the air pressure in the detection cavity, if there is a leakage at the position where the inner sealing tank 201 and the outer sealing tank 203 are connected with the stator inner barrel body 1, it will also cause the air pressure in the detection cavity to decrease, which will cause the detection result of the sealing performance of the working cavity in the stator inner barrel body 1 to be wrong, therefore, the outer protection unit 3 is installed on the fixing head 2, the outer protection unit 3 includes a protection tank 301, the protection tank 301 is fixedly installed on the outer sealing tank 203, and a supporting portion 305 is arranged on the side of the protection tank 301 away from the outer sealing tank 203, when the fixing head 2 is inserted with the stator inner barrel body 1, the supporting portion 305 is attached to the outer wall of the stator inner barrel body 1, and the supporting portion 305 is used for supporting the stator inner barrel body 1, so that the entire stator inner barrel body 1 remains stable during detection;

[0035] At the same time, the protective tank 301 is provided with a blocking air bag 302, the blocking air bag 302 comprises an air inlet and an air outlet, the blocking air bag 302 is surrounded by the protective tank 301 and the outer wall of the cylinder body 101 to form a protective cavity 303, the protective tank 301 is provided with an external air pressure detection unit 304 for measuring the air pressure in the protective cavity 303, after the air inlet of the blocking air bag 302, the blocking air bag 302 can be inflated and abut against the outer wall of the cylinder body 101 to form a sealed protective cavity 303 together with other components, if the position where the inner sealing tank 201 and the outer sealing tank 203 are connected leaks, the leaked gas will enter the inside of the protective cavity 303, which will cause the air pressure in the protective cavity 303 to rise, and whether the position where the inner sealing tank 201 and the outer sealing tank 203 are connected leaks can be judged according to the value of the external air pressure detection unit 304, and the data of the internal air pressure detection unit 207 are compared with each other, so as to judge whether the connection position of the sealing end cover 103 and the cylinder body 101 is sealed, and the comparison of the two data is more accurate.

[0036] In further embodiments, the fixing head 2 is installed on the clamping frame 4, two clamping frames 4 are connected for clamping power units 5 for moving closer or farther away from each other, the clamping power units 5 can adopt a bidirectional telescopic rod or other structures to realize the mutual approach or mutual distance of the two clamping frames 4, so as to clamp or loosen the stator inner cylinder body 1 located between the two clamping frames 4, it is necessary to mention that the stator inner cylinder body 1 is provided with a bracket 6, and the bracket 6 is provided with a crescent groove.

[0037] Working principle:

[0038] Start the clamping power unit 5, which drives the two clamping frames 4 and the respective connected fixing heads 2 to approach each other, and clamps the stator inner cylinder body 1, during which the inner sealing tank 201 and the outer sealing tank 203 in the fixing head 2 are inserted into the inside of the stator inner cylinder body 1, and the inner wall of the stator connector 104, the inner wall of the cylinder body 101 and the sealing end cover 103 surround the inner sealing tank 201 and the outer sealing tank 203 to form a detection cavity.

[0039] Start the pressure pump 206 to add gas to the inside of the detection cavity, the air pressure in the detection cavity increases, and the pressure pump 206 is turned off after working for a period of time, at this time, the air pressure value detected by the internal air pressure detection unit 207 is checked, if the air pressure does not decrease and remains stable, it means that there is no gap at the connection position of the sealing end cover 103 and the cylinder body 101, otherwise it means that there is a gap, the sealing end cover 103 cannot completely seal the working cavity, so as to measure whether the connection between the sealing end cover 103 and the cylinder body 101 is tight.

[0040] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stator inner cylinder machining fixture characterized by comprising: Including fixed head (2), fixed head (2) is provided with two, and two fixed head (2) is located at the both sides of stator inner cylinder body (1) respectively; The stator inner cylinder body (1) includes a cylinder body (101), a stator core (102) is installed in the cylinder body (101), and two sealing end covers (103) are installed in the cylinder body (101), the two sealing end covers (103) are located at the both sides of the stator core (102), and a stator connector (104) is installed in the cylinder body (101); The fixed head (2) is provided with an inner sealing tank (201) and an outer sealing tank (203), when the fixed head (2) is inserted with the stator inner cylinder body (1), the outer wall of the inner sealing tank (201) is attached to the inner wall of the stator connector (104), and the inner wall of the outer sealing tank (203) is attached to the outer wall of the cylinder body (101); The inner wall of the stator connector (104), the inner wall of the cylinder body (101) and the sealing end cover (103) are surrounded by the inner sealing tank (201) and the outer sealing tank (203) to form a detection cavity, the inner sealing tank (201) is provided with a pressurized ventilation pipeline (205), the pressurized ventilation pipeline (205) is connected with a pressurized pump (206) for introducing gas into the detection cavity, and the inner sealing tank (201) is provided with an inner air pressure detection unit (207) for measuring the air pressure inside the detection cavity. The fixed head (2) is installed on a clamping frame (4), and two clamping frames (4) are connected with a clamping power unit (5) for moving closer or farther away from each other.

2. The stator inner tube machining fixture according to claim 1, wherein The inner sealing tank (201) is provided with an inner sealing groove at the position connected with the stator connector (104), and an inner sealing pad (202) is clamped in the inner sealing groove.

3. The stator inner tube machining fixture according to claim 2, wherein The outer sealing tank (203) is provided with an outer sealing groove on the side attached to the outer wall of the cylinder body (101), and an outer sealing pad (204) is clamped in the outer sealing groove.

4. The stator inner tube machining fixture according to claim 1, wherein The fixed head (2) is provided with an outer protection unit (3), the outer protection unit (3) includes a protection tank (301), the protection tank (301) is fixedly installed on the outer sealing tank (203), and the protection tank (301) is provided with a support portion (305) away from the outer sealing tank (203), when the fixed head (2) is inserted with the stator inner cylinder body (1), the support portion (305) is attached to the outer wall of the stator inner cylinder body (1).

5. The stator inner tube machining fixture according to claim 4, wherein The protection tank (301) is provided with a plugging air bag (302), the plugging air bag (302) includes an air inlet and an air outlet, the protection tank (301) and the cylinder body (101) form a protection cavity (303) around the outer wall, and the protection tank (301) is provided with an outer air pressure detection unit (304) for measuring the air pressure in the protection cavity (303).

6. The stator inner tube machining fixture according to claim 1, wherein The stator inner cylinder body (1) is provided with a bracket (6) on the lower side, and the bracket (6) is provided with a crescent groove.

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