Leakage-proof device of heat supply pipe network for heat supply

Abstract

The utility model relates to the technical field of heat supply pipe networks, in particular to a heat supply pipe network leakproof device for heat supply, which comprises a middle connecting pipe and two joint pipes, the two joint pipes are respectively connected to two ends of the middle connecting pipe, a middle pipe is fixedly mounted at the center of the inner wall of the middle connecting pipe, and an insertion pipe is fixedly mounted on the inner wall of the middle pipe. According to the heat supply pipe network leakage-proof device for heat supply, mechanical fastening force is provided through threaded connection of the sleeve and the middle connecting pipe, the sealing ring is pressed to fill the gap between the connector base and the insertion pipe to block external leakage, the insertion pipe is installed in the insertion groove, expands under the pressure of a heated medium and is tightly attached to the inner connecting pipe to form dynamic sealing, and the sealing effect is good. And the elastic head of the inner connecting pipe is made of high-temperature-resistant rubber, so that the axial expansion amount of the pipeline can be absorbed, and connection looseness caused by thermal expansion and cold contraction is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat supply pipe network, concretely to a heat supply pipe network leak protection device for heat supply and heating. BACKGROUND

[0002] The heat supply pipe network is the core component of the urban central heating system, and the sealing of the connection directly relates to the heat supply efficiency and energy loss.

[0003] Patent application number: 202421123680.1 proposes a heat supply pipe network leak protection device for heat supply and heating, including base, the both ends of base are equipped with connecting rod, the outer side end of connecting rod is equipped with support seat, the outer wall of connecting rod is connected with limit seat in interference fit, the outer wall of connecting rod is movably connected with fixed seat, the outer side end wall of fixed seat is equipped with connecting barrel and is connected on the outer wall of connecting rod, the outer wall of fixed seat is equipped with a plurality of bosses;It also includes pipeline, the inner side end of pipeline is equipped with connecting head, the inside of connecting head is embedded with sealing pad one, the outer wall of connecting head movably connects with sealing pad two.The utility model adopts the installation mode of two sealing pads and threaded connection, realizes the triple sealing effect of pipeline connection, high sealing performance, can effectively prevent the leakage of heat supply pipe network, ensures the safe transmission of heat energy, durability and stability.

[0004] The device also has some deficiencies when in use, such as the sealing pad of the device directly contacts with the hot fluid, and after long-term use, the sealing pad is prone to aging and misplacement, causing leakage, and the pipeline is prone to deformation under the action of heat for a long time, which may cause stress concentration at the connection and accelerate the sealing failure. Utility model content

[0005] The utility model aims at providing a heat supply pipe network leak protection device for heat supply and heating to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A heat supply pipe network leak protection device for heat supply and heating, including middle connecting pipe and two joint pipes, the two joint pipes are connected at both ends of the middle connecting pipe, the inner wall center of the middle connecting pipe is fixedly installed with an intermediate pipe, and the inner wall of the intermediate pipe is fixedly installed with a pipe;

[0008] One end of the joint pipe is fixedly installed with a joint seat, an outer surface of the joint pipe is rotatably installed with a rotating seat, one side of the rotating seat facing the joint seat is fixedly connected with a sleeve, the sleeve is sleeved on the outer surface of the joint pipe, an outer surface of the sleeve is provided with external threads, inner walls of two ends of the middle connecting pipe are both provided with internal threads matched with the sleeve, an inner wall of the joint pipe is fixedly installed with an inner connecting pipe, one end of the inner connecting pipe facing the joint seat extends to an outside of the joint pipe, an inner connecting pipe is arranged between the inner connecting pipe and the joint pipe, and the insertion slot is matched with the insertion pipe.

[0009] Preferably, the upper surface of the middle connecting pipe is fixedly installed with an indication plate, and two threaded holes are arranged on the indication plate.

[0010] Preferably, an outer surface of the insertion pipe is sleeved with a sealing ring, and one end of the joint seat abuts against the sealing ring.

[0011] Preferably, one end of the inner connecting pipe fixedly connected with the inner wall of the joint pipe is provided as an arc surface.

[0012] Preferably, one end of the inner connecting pipe extending out is fixedly connected with an elastic head, when the two joint pipes are installed on the middle connecting pipe, the two inner connecting pipes are inserted into the inside of the insertion pipe, the two elastic heads abut against each other, and the two joint pipes form a communicated heat channel.

[0013] Compared with the prior art, the heat supply pipe network leak-proof device for heat supply and heating has the following beneficial effects:

[0014] The heat supply pipe network leak-proof device for heat supply and heating provides mechanical fastening force through the threaded connection of the sleeve and the middle connecting pipe, the sealing ring is pressed to fill the gap between the joint seat and the insertion pipe, external leakage is blocked, the insertion pipe is installed in the inside of the insertion slot, the heat medium pressure expansion is tightly combined with the inner connecting pipe to form dynamic sealing, deformation caused by temperature change is compensated, the elastic head of the inner connecting pipe is made of high-temperature-resistant rubber, can absorb the axial expansion and contraction amount of the pipeline, and avoids loosening of the connection caused by thermal expansion and cold contraction. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a structural schematic view of the joint pipe and the middle connecting pipe when they are separated;

[0017] Figure 3 It is a sectional structural schematic view of the utility model;

[0018] Figure 4 It is a sectional structural schematic view of the joint pipe and the middle connecting pipe when they are separated.

[0019] In the figure: 1, the middle connecting pipe; 2, the intermediate pipe; 3, the cannula; 4, the indication board; 5, the sealing ring; 6, the joint pipe; 7, the joint seat; 8, the rotating seat; 9, the sleeve; 10, the insertion slot; 11, the inner connecting pipe; 12, the elastic head. DETAILED DESCRIPTION

[0020] Please refer to Figures 1-4 A heat supply pipe network leak-proof device for heat supply, comprising a middle connecting pipe 1 and two joint pipes 6, the two joint pipes 6 are connected at both ends of the middle connecting pipe 1 respectively, a middle pipe 2 is fixedly installed at the center of the inner wall of the middle connecting pipe 1, and a cannula 3 is fixedly installed at the inner wall of the middle pipe 2;

[0021] One end of the joint pipe 6 is fixedly installed with a joint seat 7, and the outer surface of the joint pipe 6 is rotatably installed with a rotating seat 8, one side of the rotating seat 8 facing the joint seat 7 is fixedly connected with a sleeve 9, the sleeve 9 is sleeved on the outer surface of the joint pipe 6, the outer surface of the sleeve 9 is provided with external threads, the inner wall of both ends of the middle connecting pipe 1 is provided with internal threads matched with the sleeve 9, and the inner wall of the joint pipe 6 is fixedly installed with an inner connecting pipe 11, one end of the inner connecting pipe 11 extending to the outside of the joint pipe 6 faces the joint seat 7, and the inner connecting pipe 11 and the joint pipe 6 are provided with an insertion slot 10 matched with the cannula 3.

[0022] When installing, the two joint pipes 6 are screwed into both ends of the middle connecting pipe 1 respectively, the external threads of the sleeve 9 are engaged with the internal threads of the middle connecting pipe 1, the sleeve 9 is rotated to realize fastening by rotating the rotating seat 8, the inner connecting pipe 11 extends out of the joint pipe 6 and is inserted into the cannula 3, and the heat channel formed between the two joint pipes 6 is continuous, facilitating the flow of heat medium.

[0023] Further, the upper surface of the middle connecting pipe 1 is fixedly installed with an indication board 4 for indicating the direction of the middle connecting pipe 1, and the indication board 4 is provided with two threaded holes, so that the position of the middle connecting pipe 1 can be completely fixed by installing bolts, facilitating the support of the whole device.

[0024] Among them, the outer surface of the cannula 3 is sleeved with a sealing ring 5, one end of the joint seat 7 abuts against the sealing ring 5, and the sealing ring 5 on the outer wall of the cannula 3 is pressed against the end face of the joint seat 7, forming the first sealing to prevent external leakage.

[0025] Among them, the end of the inner connecting pipe 11 fixedly connected with the inner wall of the joint pipe 6 is provided with an arc surface, designed to reduce fluid resistance and prevent medium retention.

[0026] Please refer to Figure 3 and 4, the end of the inner connecting pipe 11 extends and is fixedly connected with the elastic head 12, when the two joint pipes 6 are installed on the middle connecting pipe 1, the two inner connecting pipes 11 are inserted into the inside of the plug pipe 3, the two elastic heads 12 abut against each other, the heat passage is formed between the two joint pipes 6, there is no gap, and the normal work of the device is affected.

[0027] The sealing ring 5 and the elastic head 12 are made of high-temperature-resistant rubber, the service life of the device is prolonged, the axial expansion and contraction of the pipeline of the device can be absorbed, the connection is prevented from being loose due to thermal expansion and cold shrinkage, and the connection sealing effect of the device is further improved.

[0028] Working principle: the heat pipe network leakage-proof device for heat supply and heating, two joint pipes 6 are respectively screwed into the two ends of the middle connecting pipe 1, the outer thread of the sleeve pipe 9 is engaged with the inner thread of the middle connecting pipe 1, the sleeve pipe 9 is rotated by rotating the rotating seat 8 to realize fastening, the inner connecting pipe 11 extends from the joint pipe 6 and is inserted into the plug pipe 3, the elastic heads 12 abut against each other in the inner cavity of the plug pipe 3, the heat passage formed between the two joint pipes 6 is ensured to be continuous, there is no gap, and the normal work of the device is affected, the sealing ring 5 on the outer wall of the plug pipe 3 is pressed against the end face of the joint seat 7 to form the first sealing, the plug pipe 3 is inserted into the insertion groove 10 and forms the second sealing with the inner connecting pipe 11, the elastic heads 12 of the inner connecting pipe 11 elastically contact in the plug pipe 3 to form the third sealing, the connection sealing effect of the device is improved, and the heat fluid in the heat pipe network can be effectively prevented from leaking.

Claims

1. A heat supply pipe network leak protection device for heat supply heating, characterized by: The utility model provides a connecting pipe, including middle connecting pipe (1) and two joint pipes (6), two joint pipes (6) are connected respectively in the both ends of middle connecting pipe (1), the inner wall center of middle connecting pipe (1) is fixedly installed with intermediate pipe (2), the inner wall of intermediate pipe (2) is fixedly installed with cannula (3); One end of joint pipe (6) is fixedly installed with joint seat (7), the outer surface of joint pipe (6) is rotatably installed with rotating seat (8), the side of rotating seat (8) towards joint seat (7) is fixedly connected with sleeve (9), sleeve (9) is sleeved on the outer surface of joint pipe (6), the outer surface of sleeve (9) is provided with external thread, the inner wall of both ends of middle connecting pipe (1) is all provided with the inner thread matched with sleeve (9), the inner wall of joint pipe (6) is fixedly installed with inner connecting pipe (11), one end of inner connecting pipe (11) towards joint seat (7) extends to the outside of joint pipe (6), and inner connecting pipe (11) is provided with inner connecting pipe (11) between joint pipe (6), and insertion slot (10) is matched with cannula (3).

2. A leakage preventing device for heating pipe network for heating according to claim 1, characterized in that: The upper surface of the middle connecting pipe (1) is fixedly installed with an indicator plate (4), and the indicator plate (4) is provided with two threaded holes.

3. The heat supply pipe network leak protection device according to claim 1, characterized in that: The outer surface of the cannula (3) is sleeved with a sealing ring (5), and one end of the joint seat (7) abuts against the sealing ring (5).

4. The heat supply pipe network leak protection device according to claim 1, characterized in that: The end of the inner connecting pipe (11) fixedly connected with the inner wall of the joint pipe (6) is provided as an arc surface.

5. The leak protection device for heating pipe network according to claim 1, characterized in that: The end of the inner connecting pipe (11) protruding is fixedly connected with an elastic head (12), when the two joint pipes (6) are installed on the middle connecting pipe (1), the two inner connecting pipes (11) are inserted into the inside of the cannula (3), the two elastic heads (12) abut against each other, and the two joint pipes (6) form a communicating heat channel.

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