Differential transformation displacement sensor and installation method

Abstract

The invention relates to a differential transformation displacement sensor and an installation method, and relates to the technical field of sensors, the differential transformation displacement sensor comprises a shell, a coil framework, a heat dissipation structure and a magnetic induction structure, and the shell is provided with an air hole; the coil framework is installed in the shell and comprises an inner cylinder part and two outer cylinder parts arranged on the inner cylinder part in a sleeving mode, and the two outer cylinder parts are oppositely arranged on the two sides of the outer cylinder part and keep a distance. The heat dissipation structure is arranged between the two outer cylinder parts and comprises a movable block, a heat dissipation fan and a connecting rod, and the movable block and the inner cylinder part are coaxially arranged and are in spiral transmission connection with the heat dissipation fan; the two groups of connecting rods are arranged in one-to-one correspondence with the two outer cylinder parts, one end of each connecting rod is connected with the corresponding outer cylinder part, and the other end of each connecting rod abuts against the cooling fan; the magnetic induction structure is arranged in the shell in a sliding mode, and the magnetic induction structure pushes the movable block to move when sliding so as to drive the cooling fan to rotate. The LED lamp has the effect of being high in heat dissipation performance.

Description

Technical Field

[0001] The present application relates to the field of sensor technology, and in particular to a differential transformer displacement sensor and an installation method thereof. Background Art

[0002] Differential voltage transformer displacement sensor, also known as LVDT (Linear Variable Differential Transformer), is a commonly used displacement sensor. It can convert mechanical displacement into an electrical signal proportional to it. The differential voltage transformer displacement sensor mainly includes a housing, a coil frame and a magnetic induction structure placed in the housing, and a primary coil and a secondary coil are wound on the coil frame.

[0003] When the primary coil is excited by an AC voltage, an induced potential is generated in the two secondary coils due to mutual induction. The movement of the magnetic induction structure causes the induced potential of the two secondary coils to change, thereby changing their potential difference. This potential difference is linearly related to the displacement of the iron core, so the displacement can be determined by measuring this potential difference.

[0004] When the differential transformer displacement sensor is in operation, both the primary coil and the secondary coil will generate heat; further, the magnetic induction structure will generate hysteresis loss and eddy current loss in the magnetic field, and these losses will also be converted into heat, causing heat concentration in the differential transformer displacement sensor. Summary of the invention

[0005] The purpose of the present application is to provide a differential transformer displacement sensor with high heat dissipation and an installation method to solve the problem of heat concentration in the displacement sensor when the displacement sensor is working.

[0006] In the first aspect, the present application provides a differential transformer displacement sensor adopting the following technical solution:

[0007] A differential transformer displacement sensor, characterized in that it comprises:

[0008] The shell is provided with a vent hole;

[0009] The coil frame is installed in the shell, and includes an inner cylinder part and two outer cylinder parts sleeved on the inner cylinder part, the two outer cylinder parts are arranged opposite to each other on both sides of the outer cylinder part and keep a distance, the primary coil is wound on the inner cylinder part, and the secondary coil is wound on the outer cylinder part;

[0010] A heat dissipation structure is arranged between the two outer cylinders, and comprises a movable block, a heat dissipation fan and a connecting rod, wherein the movable block is coaxially arranged with the inner cylinder and is connected with the heat dissipation fan in a spiral transmission manner;

[0011] The connecting rods are provided in two groups, and the two groups of connecting rods are provided in one-to-one correspondence with the two outer cylinders, one end of the connecting rod is connected to the corresponding outer cylinder, and the other end of the connecting rod is against the cooling fan;

[0012] The magnetic induction structure is slidably arranged in the shell, and the magnetic induction structure pushes the movable block to move when sliding, thereby driving the cooling fan to rotate.

[0013] Furthermore, the magnetic induction structure comprises:

[0014] Magnetic axis;

[0015] A movable rod, one end of which is inserted into the inner cylinder and connected to the magnetic axis, and the other end of which is provided with a boss;

[0016] There are multiple push rods, which are arranged around the boss. One end of the push rod is connected to the boss, and the other end of the push rod is provided with a matching groove, and the movable block at least partially extends into the matching groove.

[0017] Furthermore, the matching groove is opened along the length direction of the push rod, and the opening depth of the matching groove is at least 5 times the length of the movable block.

[0018] Furthermore, a plurality of reinforcing ribs are arranged around the peripheral side wall of the movable rod, and a plurality of limiting grooves for inserting the reinforcing ribs are opened on the inner wall of the inner tube portion, and the plurality of limiting grooves are arranged in one-to-one correspondence with the plurality of reinforcing ribs.

[0019] Furthermore, a ball is embedded in one end of the connecting rod close to the heat dissipation fan, and the connecting rod is in contact with the heat dissipation fan through the ball.

[0020] Furthermore, a mounting groove is provided on one side of the two outer cylinders close to each other, and an elastic member is provided between the outer cylinder and the heat dissipation structure;

[0021] One end of the elastic member is inserted into the installation groove and abuts against the bottom wall of the installation groove, and the other end of the elastic member abuts against the movable block.

[0022] Furthermore, a plurality of annular protrusions are connected to the outer side walls of the inner tube portion and the outer tube portion, and the plurality of protrusions are evenly distributed along the length direction of the coil skeleton.

[0023] Furthermore, the outer cylinder portion is provided with heat dissipation holes, which are opened along the radial direction of the coil skeleton and penetrate the protrusions located on the outer cylinder portion.

[0024] Furthermore, the housing comprises:

[0025] Sleeve;

[0026] The heat dissipation end cover, the vent hole is opened on the heat dissipation end cover, two heat dissipation end covers are provided, and the two heat dissipation end covers are arranged oppositely on both sides of the sleeve.

[0027] In a second aspect, the present application provides a method for installing a differential transformer displacement sensor, comprising the following steps:

[0028] S1. Wind the primary coil on the inner cylinder and the secondary coil on the two outer cylinders;

[0029] S2, open the shell, install the inner cylinder part and an outer part into the shell in sequence, and then insert the magnetic induction structure into the inner cylinder part from one end of the shell;

[0030] S3, installing the heat dissipation structure on the inner cylinder and matching it with the magnetic induction structure;

[0031] S4. Install another outer cylinder onto the heat dissipation structure, and then close the shell.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The coil skeleton in the present application includes an inner cylinder portion and an outer cylinder portion, through which the primary coil and the secondary coil are separated, so that the primary coil and the secondary coil can maintain a distance. The cavity formed by the distance between the primary coil and the secondary coil and the distance between the two secondary coils also further improves the fluidity of the gas between the primary coil and the secondary coil, thereby further improving the heat dissipation effect and reducing the possibility of heat concentration in the sensor.

[0034] 2. A heat dissipation structure is provided in the present application. When the magnetic induction structure slides, it will push the movable block to move laterally along the length direction of the shell. Since the heat dissipation fan is clamped by two sets of connecting rods and is spirally connected to the movable block, the lateral movement of the movable block will further drive the heat dissipation fan to rotate to form an airflow, thereby improving the fluidity of the air in the sensor and enhancing the heat dissipation effect.

[0035] 3. The magnetic induction structure in the present application includes a push rod with a matching groove, and the push rod drives the movable block to move horizontally. When the magnetic induction structure is not pushed, the movable block is located in the center of the matching groove. When the magnetic induction structure is pushed until the groove wall of the matching groove abuts against the movable block, the movable block is driven by the magnetic induction structure and the heat dissipation structure rotates. By constraining the depth of the matching groove, the movable block can better cooperate with the movement of the magnetic induction structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic cross-sectional view of the differential transformer displacement sensor in the present application;

[0037] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0038] In the figure, 1, shell; 11, air vent; 12, sleeve; 13, heat dissipation end cover; 2, coil skeleton; 21, inner cylinder; 211, limit groove; 22, outer cylinder; 221, installation groove; 23, protrusion; 231, heat dissipation hole; 3, heat dissipation structure; 31, movable block; 32, heat dissipation fan; 33, connecting rod; 34, ball; 4, magnetic induction structure; 41, magnetic axis; 42, movable rod; 43, push rod; 431, matching groove; 44, boss; 5, reinforcing rib; 6, elastic part. DETAILED DESCRIPTION

[0039] The following will be combined with the attached Figure 1-2 The technical solution of the present application is described clearly and completely. The following embodiments are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application. In the following description, the same symbols are used to represent the same or equivalent elements, and repeated descriptions are omitted.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] It should be further understood that the term “and / or” used in the specification and corresponding claims of this application refers to any and all possible combinations of one or more of the listed items.

[0043] A differential transformer displacement sensor, referring to Figure 1 and Figure 2, including a shell 1, a coil frame 2 and a magnetic induction structure 4. The coil frame 2 and the magnetic induction structure 4 are both arranged in the shell 1, and a primary coil and two secondary coils are wound on the coil frame 2. When winding the coils, the primary coil is first wound on the coil frame 2, and then the two secondary coils are wound on the coil frame 2. The two wound secondary coils are symmetrically arranged on both sides of the coil frame 2.

[0044] When the primary coil is energized, it provides a magnetic field. Due to the mutual induction, an induced potential is generated in the two secondary coils. The movement of the magnetic induction structure 4 causes the induced potential of the two secondary coils to change, thereby changing their potential difference. This potential difference is linearly related to the displacement of the iron core, so the displacement can be determined by measuring this potential difference.

[0045] Reference Figure 1 The housing 1 includes a sleeve 12 and a heat dissipation end cover 13. Two heat dissipation end covers 13 are provided, and the two heat dissipation end covers 13 are arranged oppositely at two ends of the sleeve 12, and a vent hole 11 is opened on the heat dissipation end cover 13.

[0046] When the sensor is working, the primary coil and the secondary coil will generate heat (the coil has resistance). Similarly, the magnetic sensing structure 4 will generate hysteresis loss and eddy current loss in the magnetic field. These losses will also be converted into heat, causing heat accumulation inside the sensor and poor heat dissipation performance of the sensor.

[0047] The vent holes 11 on the heat dissipation end cap 13 connect the internal environment of the housing 1 with the external environment. The heat generated during the operation of the displacement sensor is conducted to the outside through the airflow, which can cool the sensor and provide better protection for the sensor.

[0048] Further, refer to Figure 1 and Figure 2 The coil skeleton 2 includes an inner cylinder portion 21 and two outer cylinder portions 22 sleeved on the inner cylinder portion 21. The two outer cylinder portions 22 are arranged on both sides of the inner cylinder portion 21 opposite to each other and maintain a spacing. The primary coil is wound on the inner cylinder portion 21, and the two secondary coils are arranged in a one-to-one correspondence with the two outer cylinder portions 22 and are wound on the corresponding outer cylinder portions 22.

[0049] The conventional coil frame 2 adopts an integral structure, and the primary coil and the secondary coil are superimposed and wound on the coil frame 2. Both the primary coil and the secondary coil generate heat, and heat is concentrated in the sensor, which accelerates the aging of the primary coil and the secondary coil.

[0050] The primary coil and the secondary coil are separated by the inner cylinder 21 and the outer cylinder 22, so that the primary coil and the secondary coil can maintain a distance. The cavity formed by the distance between the primary coil and the secondary coil and the distance between the two secondary coils further improves the fluidity of the gas between the primary coil and the secondary coil, thereby further improving the heat dissipation effect and reducing the possibility of heat concentration in the sensor.

[0051] Furthermore, an annular protrusion 23 is connected to the outer side walls of the inner cylinder 21 and the outer cylinder 22, and a plurality of protrusions 23 are provided, and the plurality of protrusions 23 are evenly distributed along the length direction of the coil skeleton 2. Adjacent protrusions 23 enclose a groove, and when winding the primary coil or the secondary coil, the primary coil or the secondary coil can be wound in the groove, so as to facilitate the winding of the coil and protect the coil.

[0052] Furthermore, a heat dissipation hole 231 is opened on the outer cylinder portion 22. The heat dissipation hole 231 is opened along the radial direction of the coil frame 2 and passes through the protrusion 23 located on the outer cylinder portion 22. By setting the heat dissipation hole 231, the chambers inside and outside the coil frame 2 are connected, thereby further improving the heat dissipation effect.

[0053] Reference Figure 2 A heat dissipation structure 3 is arranged between the two outer cylinders 22, and the heat dissipation structure 3 includes a movable block 31, a heat dissipation fan 32 and a connecting rod 33. The movable block 31 is coaxially arranged with the inner cylinder 21 and is connected with the heat dissipation fan 32 by spiral transmission. Two groups of connecting rods 33 are arranged, and the two groups of connecting rods 33 are arranged one by one with the two outer cylinders 22. One end of the connecting rod 33 is connected with the corresponding outer cylinder 22, and the other end of the connecting rod 33 is against the heat dissipation fan 32.

[0054] When the magnetic sensing structure 4 slides, it pushes the movable block 31 to move horizontally along the length direction of the shell 1. Since the cooling fan 32 is clamped by two sets of connecting rods 33 and is spirally connected to the movable block 31, the horizontal movement of the movable block 31 will further drive the cooling fan 32 to rotate to form an airflow, thereby improving the fluidity of the air in the sensor and enhancing the heat dissipation effect.

[0055] Furthermore, a plurality of connecting rods 33 form a group, and the position of the cooling fan 32 is positioned by the plurality of connecting rods 33, so as to ensure that the cooling fan 32 can rotate stably. In a specific embodiment, four connecting rods 33 form a group, and the four connecting rods 33 are arranged around the cooling fan 32. Correspondingly, an annular groove can be further provided on the cooling fan 32 to enhance the limiting effect of the connecting rods 33 on the cooling fan 32.

[0056] Furthermore, a ball 34 is embedded in one end of the connecting rod 33 close to the cooling fan 32. When the cooling fan 32 rotates, the ball 34 rotates accordingly to reduce the friction between the connecting rod 33 and the cooling fan 32. This can better protect the cooling fan 32 and also ensure that the cooling fan 32 can rotate more smoothly under the drive of the movable block 31.

[0057] Reference Figure 1 The magnetic induction structure 4 includes a magnetic axis 41, a movable rod 42 and a push rod 43. One end of the movable rod 42 is inserted into the inner cylinder 21 and connected to the magnetic axis 41. When the movable rod 42 pushes the magnetic axis 41 to move, the magnetic field distribution in the housing 1 will be changed, thereby changing the mutual inductance between the primary coil and the secondary coil.

[0058] Furthermore, a boss 44 is provided at the other end of the movable rod 42, and a plurality of push rods 43 are provided, and the plurality of push rods 43 are arranged around the boss 44. One end of the push rod 43 is connected to the boss 44, and the other end of the push rod 43 is inserted into the gap between the inner cylinder 21 and the outer cylinder 22, and contacts the movable block 31.

[0059] By providing the push rod 43 , when the magnetic induction structure 4 moves as a whole, the magnetic induction structure 4 pushes the movable block 31 to move, thereby driving the cooling fan 32 to rotate.

[0060] In a specific embodiment, the movable block 31 is annular (i.e., a through hole is provided), one end of the push rod 43 away from the boss 44 passes through the through hole, and a matching groove 431 is provided, and the movable block 31 at least partially extends into the matching groove 431. By providing the matching groove 431, when the magnetic sensing structure 4 moves, the groove wall of the matching groove 431 limits the movable block 31 and pushes the movable block 31 to move horizontally.

[0061] Furthermore, considering that the movable stroke of the movable block 31 is short (the movable stroke is the distance between the two outer cylinders 22), while the movable stroke of the magnetic axis 41 is long, the matching groove 431 is opened along the length direction of the push rod 43, and the opening depth of the matching groove 431 is at least 5 times the length of the movable block 31. The opening depth of the matching groove 431 is specifically set according to the measuring range of the displacement sensor. In a specific embodiment, the opening depth of the matching groove 431 is 7 times the length of the movable block 31.

[0062] When the magnetic induction structure 4 is not pushed, the movable block 31 is located in the center of the matching groove 431. When the magnetic induction structure 4 is pushed until the groove wall of the matching groove 431 abuts against the movable block 31, the movable block 31 is driven by the magnetic induction structure 4 and the heat dissipation structure 3 rotates. By restricting the opening depth of the matching groove 431, the movable block 31 can better cooperate with the movement of the magnetic induction structure 4.

[0063] It should be noted that the present application does not specifically limit the specific form of the push rod 43. In another specific embodiment, the end of the push rod 43 away from the boss 44 can also be bent in multiple sections to form the above-mentioned matching groove 431, which can also achieve the purpose of the magnetic induction structure 4 driving the heat dissipation structure 3 to rotate.

[0064] In addition, refer to Figure 1 A plurality of reinforcing ribs 5 are arranged around the peripheral side wall of the movable rod 42 , and a plurality of limiting grooves 211 for inserting the reinforcing ribs 5 are opened on the inner wall of the inner cylinder portion 21 , and the plurality of limiting grooves 211 are arranged one by one corresponding to the plurality of reinforcing ribs 5 .

[0065] By providing the reinforcing ribs 5, the strength of the movable rod 42 is enhanced to reduce the risk of the movable rod 42 breaking during the movement of the magnetic sensing structure 4; at the same time, the reinforcing ribs 5 are limited in the limiting grooves 211, which also makes the magnetic sensing structure 4 move more accurately and smoothly.

[0066] Furthermore, a mounting groove 221 is provided on one side where the two outer cylinder portions 22 are close to each other, and an elastic member 6 is provided between the outer cylinder portion 22 and the heat dissipation structure 3; one end of the elastic member 6 is inserted into the mounting groove 221 and abuts against the bottom wall of the mounting groove 221, and the other end of the elastic member 6 abuts against the movable block 31.

[0067] The magnetic sensing structure 4 moves when pushed, and an elastic member 6 contracts. When the magnetic sensing structure 4 is no longer pushed, the elastic member 6 can rebound, and the movable block 31 is reset by pushing the movable block 31 in the opposite direction. During the process of the movable block 31 being reset, the cooling fan 32 is also rotated under the push of the elastic member 6 (the rotation direction is opposite to that when the magnetic sensing structure 4 is pushed), that is, the cooling fan 32 can rotate during the process of the magnetic sensing structure 4 being pushed and reset, thereby enhancing the heat dissipation effect of the sensor.

[0068] Meanwhile, in a specific embodiment, an elastic member 6 may be further disposed in the inner cylinder 21 , one end of the elastic member 6 abuts against the magnetic axis 41 , and the other end abuts against the heat dissipation end cover 13 , so as to reset the magnetic induction structure 4 .

[0069] In addition, the present application provides a method for installing a differential transformer displacement sensor, comprising the following steps:

[0070] S1, winding the primary coil on the inner cylinder 21, and winding the secondary coil on the two outer cylinders 22;

[0071] S2, open the shell 1, install the inner cylinder part 21 and an outer part into the shell 1 in sequence, and then insert the magnetic induction structure 4 into the inner cylinder part 21 from one end of the shell 1;

[0072] S3, installing the heat dissipation structure 3 on the inner cylinder 21 and matching it with the magnetic induction structure 4;

[0073] S4 , installing another outer cylinder portion 22 onto the heat dissipation structure 3 , and then closing the housing 1 .

[0074] The implementation principle of the embodiment of the present application is:

[0075] The coil skeleton 2 is divided into two parts, the inner cylinder 21 and the outer cylinder 22, so that the spacing between the primary coil and the secondary coil, the spacing between the primary coil and the secondary coil, and the cavity formed by the spacing between the two secondary coils can dissipate heat well, and the heat is transferred to the outside of the sensor through the air holes 11 on the shell 1. At the same time, when the magnetic induction structure 4 slides, the heat dissipation structure 3 arranged between the two outer cylinders 22 can rotate, thereby forming an airflow, strengthening the fluidity of the air in the sensor, and further improving the heat dissipation effect.

[0076] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A differential transformer displacement sensor, characterized in that: include: The housing (1) is provided with a vent hole (11); A coil frame (2) is installed in the housing (1), comprising an inner cylinder portion (21) and two outer cylinder portions (22) sleeved on the inner cylinder portion (21), the two outer cylinder portions (22) being arranged opposite to each other on both sides of the outer cylinder portion (22) and maintaining a spacing therebetween, a primary coil being wound on the inner cylinder portion (21), and a secondary coil being wound on the outer cylinder portion (22); A heat dissipation structure (3) is arranged between the two outer cylinders (22), comprising a movable block (31), a heat dissipation fan (32) and a connecting rod (33); the movable block (31) is coaxially arranged with the inner cylinder (21) and is connected to the heat dissipation fan (32) by a spiral transmission; The connecting rod (33) is provided in two groups, and the two groups of connecting rods (33) are provided in one-to-one correspondence with the two outer cylinders (22), one end of the connecting rod (33) is connected to the corresponding outer cylinder (22), and the other end of the connecting rod (33) is against the cooling fan (32); The magnetic induction structure (4) is slidably disposed in the housing (1); when sliding, the magnetic induction structure (4) pushes the movable block (31) to move, thereby driving the cooling fan (32) to rotate.

2. A differential transformer displacement sensor according to claim 1, characterized in that: The magnetic induction structure (4) comprises: Magnetic axis (41); A movable rod (42), one end of which is inserted into the inner cylinder (21) and connected to the magnetic axis (41), and the other end of which is provided with a boss (44); A plurality of push rods (43) are provided, and the plurality of push rods (43) are arranged around the boss (44). One end of the push rod (43) is connected to the boss (44), and the other end of the push rod (43) is provided with a matching groove (431), and the movable block (31) at least partially extends into the matching groove (431).

3. A differential transformer displacement sensor according to claim 2, characterized in that: The matching groove (431) is opened along the length direction of the push rod (43), and the opening depth of the matching groove (431) is at least 5 times the length of the movable block (31).

4. The differential transformer displacement sensor according to claim 2, characterized in that: A plurality of reinforcing ribs (5) are arranged around the peripheral side wall of the movable rod (42), and a plurality of limiting grooves (211) for inserting the reinforcing ribs (5) are opened on the inner wall of the inner cylinder (21), and the plurality of limiting grooves (211) are arranged in one-to-one correspondence with the plurality of reinforcing ribs (5).

5. The differential transformer displacement sensor according to claim 1, characterized in that: A ball (34) is embedded in one end of the connecting rod (33) close to the heat dissipation fan (32), and the connecting rod (33) is in contact with the heat dissipation fan (32) through the ball (34).

6. The differential transformer displacement sensor according to claim 1, characterized in that: A mounting groove (221) is provided on one side of the two outer cylinder parts (22) close to each other, and an elastic member (6) is provided between the outer cylinder part (22) and the heat dissipation structure (3); One end of the elastic member (6) is inserted into the installation groove (221) and abuts against the bottom wall of the installation groove (221), and the other end of the elastic member (6) abuts against the movable block (31).

7. The differential transformer displacement sensor according to claim 1, characterized in that: A plurality of annular protrusions (23) are connected to the outer side walls of the inner cylinder (21) and the outer cylinder (22), and the plurality of protrusions (23) are evenly distributed along the length direction of the coil skeleton (2).

8. The differential transformer displacement sensor according to claim 7, characterized in that: The outer cylinder (22) is provided with a heat dissipation hole (231), which is opened along the radial direction of the coil frame (2) and passes through a protrusion (23) located on the outer cylinder (22).

9. The differential transformer displacement sensor according to claim 1, characterized in that: The housing (1) comprises: Sleeve (12); A heat dissipation end cover (13), wherein the vent hole (11) is provided on the heat dissipation end cover (13), and two heat dissipation end covers (13) are provided, and the two heat dissipation end covers (13) are arranged opposite to each other on two sides of the sleeve (12).

10. A method for installing a differential transformer displacement sensor, based on the differential transformer displacement sensor according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, winding a primary coil on the inner cylinder (21), and winding a secondary coil on two outer cylinders (22); S2, opening the housing (1), installing the inner cylinder (21) and an outer part into the housing (1) in sequence, and then inserting the magnetic induction structure (4) into the inner cylinder (21) from one end of the housing (1); S3, installing the heat dissipation structure (3) on the inner cylinder (21) and matching it with the magnetic induction structure (4); S4. Install another outer cylinder (22) onto the heat dissipation structure (3), and then close the housing (1).

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