Connecting joint device for electric heating pipe lead-out rod

Abstract

The utility model provides a connecting joint device for an electric heating tube lead-out rod, which is characterized in that the connecting joint device comprises a wire connecting section and a lead-out rod connecting section which are connected with each other, the wire connecting section is connected with a connecting lead, and a lead-out rod connecting cavity for inserting a lead-out rod body is arranged in the lead-out rod connecting section. And the positioning piece, the elastic piece and the locking piece which are arranged in the leading-out rod connecting cavity are respectively used for positioning the position of the leading-out rod body, electrically connecting and clamping the leading-out rod body and locking the relative position of the leading-out rod body. During installation, the lead-out rod is inserted into the lead-out rod connecting cavity and then locked by the locking piece to complete installation of the lead-out rod body part, and the lead-out rod body can be pulled out through unlocking of the locking piece when maintenance and replacement are needed, so that the installation difficulty and the disassembly difficulty are effectively reduced, the labor cost is reduced, and the repeated usability of accessories such as connecting leads and the like is improved; the problem that an existing electric heating pipe lead-out rod is complex in installation is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric heater technical field, especially relate to a connecting joint device for electric heating pipe lead-out rod. BACKGROUND

[0002] Electric heater is one of the core components of energy storage power generation system, its main function is to use valley electricity and photovoltaic, wind power system's abandoned electricity to heat heat storage medium, makes electric energy into heat energy obtains high -efficient storage, and carries out heat release to carry out heating or power generation when needing, improves energy utilization.

[0003] At present, the heating pipe of electric heater is connected into the circuit through the connecting mode of lead-out rod-lead-in wire-post, wherein the lead-out rod and the lead-in wire adopt copper pipe connecting mode, the lead-out rod and the lead-in wire are respectively inserted from the two ends of the copper pipe, and are crimped by copper pipe wire crimping pliers, and are insulated by external insulating filling glue and heat shrink sleeve. For large-scale electric heater, the number of electric heating pipes is large, and the gap between adjacent electric heating pipes is less than 3cm, and the conventional copper pipe wire crimping pliers cannot work under such small gap. In addition, once the copper pipe connection is installed, it is difficult to disassemble, which makes it difficult to maintain and replace the subsequent accessories. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a connecting joint device for electric heating pipe lead-out rod to solve the problem of complex installation of existing electric heating pipe lead-out rod.

[0005] To solve the above problems, the technical scheme of the utility model is:

[0006] The utility model relates to a connecting joint device for electric heating pipe lead-out rod, which is used for electrically connecting the lead-out rod body and the lead-in wire, and comprises:

[0007] The wire rod connecting section is configured to electrically connect the lead-in wire.

[0008] The lead-out rod connecting section is electrically connected to the wire rod connecting section, and a lead-out rod connecting cavity is arranged in the lead-out rod connecting section.

[0009] The lead-out rod connecting cavity is configured to be sleeved on the lead-out rod body, and the positioning piece is used to position the connection point of the lead-out rod body in the lead-out rod connecting cavity.

[0010] The elastic piece is configured to elastically clamp and electrically connect the lead-out rod body with the inner wall surface of the lead-out rod connecting cavity.

[0011] The locking piece is configured to lock the relative position between the lead-out rod connecting section and the lead-out rod body.

[0012] The utility model discloses a connecting joint device for electric heating tube lead-out rod, the positioning piece sets up in the bottom surface of lead-out rod connecting chamber, the positioning piece is configured as the depth of insertion of the lead-out rod body in lead-out rod connecting chamber is limited, and the positioning piece is configured as the radial movement of lead-out rod body relative to lead-out rod connecting chamber is limited.

[0013] The utility model discloses a connecting joint device for electric heating tube lead-out rod, the positioning piece is the conical convex or conical recess that sets up in the bottom surface of cylindrical insertion cavity.

[0014] The utility model discloses a connecting joint device for electric heating tube lead-out rod, the elastic piece is at least one convex elastic sheet that sets up on the inner side wall of lead-out rod connecting chamber.

[0015] The utility model discloses a connecting joint device for electric heating tube lead-out rod, and the locking recess is equipped on the lead-out rod body, and the locking through -hole that sets up is passed to the locking recess of lead-out rod connecting chamber on the lead-out rod connecting section;

[0016] The locking piece is configured as through the locking through -hole enters lead-out rod connecting chamber, and inserts the locking recess to limit the axial movement of lead-out rod body relative to lead-out rod connecting section.

[0017] The utility model discloses a connecting joint device for electric heating tube lead-out rod, the locking through -hole is the screw hole, and the locking piece is the set screw.

[0018] The utility model discloses a connecting joint device for electric heating tube lead-out rod, and the wire rod connecting section is the crimping metal pipe.

[0019] The utility model discloses a connecting joint device for electric heating tube lead-out rod, and the crimping metal pipe is set up crimping groove on.

[0020] The utility model discloses a connecting joint device for electric heating tube lead-out rod, and the lead-out rod connecting section is the connecting metal pipe, and the first end of connecting metal pipe is connected wire rod connecting section, and the tail end of connecting metal pipe is opened and forms cylindrical tube cavity, and the cylindrical tube cavity is lead-out rod connecting chamber.

[0021] The utility model discloses a connecting joint device for electric heating tube lead-out rod, still includes the outer insulating layer that covers in wire rod connecting section and lead-out rod connecting section.

[0022] The utility model discloses a connecting joint device for electric heating tube lead-out rod, and the wire rod connecting section is the crimping metal pipe.

[0023] The utility model discloses an embodiment through setting up the connecting joint device as the wire connecting section and the lead-out rod connecting section, and the wire connecting section connects the lead wire, and the lead-out rod connecting cavity for inserting the lead-out rod body is arranged in the lead-out rod connecting section, and the position of the lead-out rod body is positioned, the electric connection clamping and the relative position locking operation are realized respectively by the positioning member, the elastic member and the locking member arranged in the lead-out rod connecting cavity. When installing, the lead-out rod is inserted into the lead-out rod connecting cavity, and then is locked by the locking member, so that the installation of the lead-out rod body part can be completed, when needing to maintain and replace, the lead-out rod body can be pulled out by unlocking through the locking member, the installation difficulty and the dismounting difficulty are effectively reduced, the artificial cost is reduced, and the repeated usability of the lead wire and other accessories is improved, and the complex installation problem of the lead-out rod of the electric heating pipe is solved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a sectional view of the connecting joint device for the lead-out rod of the electric heating pipe of the utility model;

[0025] Fig. 2 It is a schematic view of the lead-out rod body of the connecting joint device for the lead-out rod of the electric heating pipe of the utility model;

[0026] Fig. 3 It is a schematic view of the connecting completed state of the connecting joint device for the lead-out rod of the electric heating pipe of the utility model.

[0027] The figure mark explanation: 1, the crimping metal pipe; 2, the crimping groove; 3, the screw hole; 4, the snap spring; 5, the connecting metal pipe; 6, the conical recess; 7, the conical protrusion; 8, the locking recess; 9, the lead-out rod body; 10, the internal hexagonal flat end set screw; 13, the lead wire; 14, the filling glue; 15, the heat shrinkage sheath. DETAILED DESCRIPTION

[0028] The utility model discloses a kind of connecting joint devices for the lead-out rod of electric heating pipe, which is further described in detail as follows in combination with drawings and specific embodiments.The advantages and features of the utility model will be more clear according to the following description and claims.

[0029] Reference Figs. 1 to 3 In one embodiment, a connecting joint device for the lead-out rod of electric heating pipe is used to electrically connect the lead-out rod body 9 with the lead wire 13, which includes a wire connecting section and a lead-out rod connecting section.

[0030] The wire connecting section is configured to electrically connect the lead wire 13. The lead-out rod connecting section is electrically connected to the wire connecting section, and a lead-out rod connecting cavity is provided in the lead-out rod connecting section. The lead-out rod connecting cavity is provided with a positioning member, an elastic member and a locking member.

[0031] The lead-out rod connecting cavity is configured to be sleeved on the lead-out rod body 9, and the positioning member is matched to position the connecting point of the lead-out rod body 9 in the lead-out rod connecting cavity, that is, to determine the stop position of the lead-out rod body 9 after being inserted into the lead-out rod connecting cavity. The elastic member is configured to elastically clamp and electrically connect the lead-out rod body 9 with the inner wall surface of the lead-out rod connecting cavity, that is, the elastic member can be made of metal material, used to press the lead-out rod body 9 against the side wall of the lead-out rod connecting cavity through the elastic deformation of the elastic member, thereby ensuring the stability of the electrical connection, and the electrical connection between the lead-out rod body 9 and the wire connecting segment can be realized through the solid part of the lead-out rod connecting segment. The locking member is configured to lock the relative position between the lead-out rod connecting segment and the lead-out rod body 9, that is, to keep the lead-out rod body 9 fixed in the lead-out rod connecting cavity after being connected, thereby ensuring the stability of the connection.

[0032] In this embodiment, the connecting joint device is provided with the wire connecting segment and the lead-out rod connecting segment connected with each other, the wire connecting segment is connected with the lead wire 13, and the lead-out rod connecting cavity for inserting the lead-out rod body 9 is arranged in the lead-out rod connecting segment. The positioning member, the elastic member and the locking member arranged in the lead-out rod connecting cavity are respectively used to position, electrically connect and lock the relative position of the lead-out rod body 9. In the installation, the lead-out rod is inserted into the lead-out rod connecting cavity and then locked by the locking member, so that the installation of the lead-out rod body 9 part is completed. When the lead-out rod body 9 needs to be repaired and replaced, the lead-out rod body 9 can be pulled out by unlocking the locking member, thereby effectively reducing the installation and disassembly difficulty, reducing the labor cost, improving the repeated usability of the lead wire 13 and other accessories, and solving the problem of complex installation of the lead-out rod of the electric heating tube.

[0033] The specific structure of the connecting joint device for the lead-out rod of the electric heating tube in this embodiment will be further described below.

[0034] In this embodiment, the wire connecting segment can be specifically a crimped metal tube 1, which is not communicated with the lead-out rod connecting cavity. The crimped metal tube 1 can be provided with a crimping groove 2 (with a reduced diameter relative to other parts of the crimped metal tube 1), and the crimping groove 2 can be connected with the lead wire 13 through pre-crimping.

[0035] In this embodiment, the lead-out rod connecting segment can be specifically a connecting metal tube 5, the leading end of the connecting metal tube 5 is connected with the crimped metal tube 1, and the trailing end of the connecting metal tube 5 is open and forms a cylindrical cavity, which is the lead-out rod connecting cavity.

[0036] In the embodiment, the positioning member can be arranged on the bottom surface of the columnar cavity. The positioning member is configured to limit the insertion depth of the lead-out rod body 9 in the lead-out rod connecting cavity, i.e., the insertion depth of the lead-out rod body 9 in the columnar cavity and the abutting to the positioning member to reach the connecting point (limiting the axial insertion depth). The positioning member is also configured to limit the radial movement of the lead-out rod body 9 relative to the columnar cavity, i.e., the lead-out rod body 9 has only the freedom of moving away from the crimped metal tube 1 along the axial direction under the limitation of the positioning member.

[0037] Specifically, the positioning member can be a conical protrusion 7 or a conical recess 6 arranged on the bottom surface of the columnar cavity. When the positioning member is the conical protrusion 7, the first end of the lead-out rod body 9 can be provided with a corresponding conical recess 6 to form a plug-in connection of the male and female heads. When the positioning member is the conical recess 6, the first end of the lead-out rod body 9 can be provided with a corresponding conical protrusion 7 to also form a plug-in connection of the male and female heads. In other embodiments, the positioning member does not need to be conical, but only needs to be able to limit the radial movement, which is not limited herein.

[0038] In the embodiment, the elastic member is at least one protruding elastic piece arranged on the inner side wall of the lead-out rod connecting cavity (which can be arranged at intervals in the circumferential direction). Specifically, it can be a plurality of clamping springs 4 integrally formed on the side wall of the connecting metal tube 5. The clamping spring 4 is a metal fastener with a certain curvature and can be deformed by extrusion.

[0039] In the embodiment, the lead-out rod body 9 is provided with a locking recess 8 (which can be a ring-shaped recess groove arranged around the outer side wall thereof), and the lead-out rod connecting segment is provided with a locking through hole penetrating into the lead-out rod connecting cavity. The locking member is configured to enter the lead-out rod connecting cavity through the locking through hole and be inserted into the locking recess to limit the axial movement of the lead-out rod body 9 relative to the lead-out rod connecting segment, i.e., to limit all the degrees of freedom of the lead-out rod body 9.

[0040] In the embodiment, in order to facilitate installation, the locking through hole can be a threaded hole 3, and the locking member can be a set screw (in order to avoid protrusions and facilitate operation, it can be an internal hexagonal flat end set screw 10).

[0041] In the embodiment, the connecting joint device can further include an external insulation layer covering the crimped metal tube 1 and the connecting metal tube 5. The external insulation layer can include a heat shrinkable sleeve and a filling glue 14 filled in the heat shrinkable sleeve and the corresponding metal tube.

[0042] In the embodiment, the material of the crimped metal tube 1 and the connecting metal tube 5 can be copper.

[0043] The installation steps of the connecting joint device of the embodiment are as follows:

[0044] Before field installation, the lead wire 13 is inserted into the inside of the crimped metal tube 1, and is crimped by using a copper tube crimping clamp, the crimping groove 2 is compressed, the diameter is reduced, and thus is fully connected and fastened with the lead wire 13.

[0045] During field installation, the connecting metal tube 5 is connected with the lead-out rod body 9 of the electric heating tube, the lead-out rod body 9 is inserted into the inside of the connecting metal tube 5, because the outer diameter of the lead-out rod body 9 is slightly larger than the minimum inner diameter of the connecting metal tube 5, after being inserted, the clamping spring 4 is pressed, thus vertical pressure is generated on the surface of the lead-out rod body 9, so that the lead-out rod body 9 is tightly connected with the connecting metal tube 5; meanwhile, after the lead-out rod body 9 is inserted into the connecting metal tube 5, the tapered protrusion 7 cooperates with the tapered recess 6 to increase the contact area of the lead-out rod body 9 and the connecting metal tube 5, and reduce the contact resistance; after the inner hexagonal flat end set screw 10 is installed into the threaded hole 3, the inner hexagonal flat end set screw 10 is completely embedded into the locking recess 8 in the connecting metal tube 5, axial support force is provided for the lead-out rod body 9, so that the lead-out rod body 9 cannot move axially, and the reliability of the connection is further increased, finally, the external filling glue 14 and the heat shrink sleeve are coated to be insulated.

[0046] When the electric heating tube lead wire needs to be replaced, only the filling glue 14 and the heat shrink sleeve need to be removed, and the inner hexagonal flat end set screw 10 is taken out, and the lead wire 13 can be reused. The field installation and the disassembly and replacement process do not involve tube clamp crimping, and the work efficiency can be significantly improved.

[0047] The connecting joint device of the embodiment can still normally install the connection of the lead-out rod body 9 and the lead wire 13 in the case that the gap is narrow. The crimped metal tube 1 and the lead wire 13 can be made in advance according to the field situation, and only the lead-out rod body 9 needs to be connected during field installation and replacement. The plug-in connection can greatly improve the work efficiency, and makes the installation and replacement work more efficient. Moreover, the connecting joint device has strong tensile capacity, good contact resistance, and does not generate heat during work, and the stability of the equipment during long-term operation is ensured.

[0048] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments. Even if various changes are made to the utility model, if the changes belong to the scope of the utility model claims and equivalent technologies, they still fall within the protection scope of the utility model.

Claims

1. A connection joint device for an electrically heated tube extraction rod, characterized in that A device for electrically connecting a lead rod body and a lead wire, comprising: a wire connecting section configured to electrically connect the lead wire; a lead rod connecting section electrically connected to the wire connecting section, and provided with a lead rod connecting cavity in the lead rod connecting section; the lead rod connecting cavity is provided with a positioning member, an elastic member, and a locking member; wherein the lead rod connecting cavity is configured to be sleeved on the lead rod body, and the positioning member is configured to position the connection point of the lead rod body in the lead rod connecting cavity; the elastic member is configured to elastically clamp and electrically connect the lead rod body with the inner wall surface of the lead rod connecting cavity; the locking member is configured to lock the relative position between the lead rod connecting section and the lead rod body.

2. The connecting joint device for an electrically heated tube extraction rod according to claim 1, characterized in that The positioning member is arranged on the bottom surface of the lead rod connecting cavity, and is configured to limit the insertion depth of the lead rod body in the lead rod connecting cavity, and is configured to limit the radial movement of the lead rod body relative to the lead rod connecting cavity.

3. A connection fitting for an electrically heated tube extraction rod as claimed in claim 2, characterized in that The positioning member is a conical protrusion or a conical recess formed on the bottom surface of the lead rod connecting cavity.

4. The connecting nipple apparatus for an electrically heated tube extraction rod of claim 1, wherein, The elastic member is at least one protruding elastic piece arranged on the inner side wall of the lead rod connecting cavity.

5. The connecting nipple apparatus for an electrically heated tube extraction rod of claim 1, wherein, The lead rod body is provided with a locking recess, and the lead rod connecting section is provided with a locking through hole penetrating into the lead rod connecting cavity; the locking member is configured to enter the lead rod connecting cavity through the locking through hole, and is inserted into the locking recess to limit the axial movement of the lead rod body relative to the lead rod connecting section.

6. A connection fitting for an electrically heated tube extraction rod as claimed in claim 5, characterized in that The locking through hole is a threaded hole, and the locking member is a set screw.

7. The connecting nipple apparatus for an electrically heated tube extraction rod of claim 1, wherein, The wire connecting section is a crimped metal tube.

8. The connecting nipple apparatus for an electrically heated tube extraction rod of claim 7, wherein, The crimped metal tube is provided with a crimping groove.

9. The connecting nipple apparatus for an electrically heated tube extraction rod of claim 1, wherein, The lead rod connecting section is a connecting metal tube, the first end of the connecting metal tube is connected to the wire connecting section, the tail end of the connecting metal tube is open and forms a cylindrical cavity, and the cylindrical cavity is the lead rod connecting cavity.

10. The connecting nipple apparatus for an electrically heated tube extraction rod of claim 1, wherein, Further comprising an outer insulating layer covering the wire connecting section and the lead rod connecting section.

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