Heat supply pipeline sealing device for thermal power plant

Abstract

The utility model provides a heat supply pipeline sealing device for a thermal power plant, which comprises a main pipe and a connecting pipe, the connecting end of the main pipe is provided with a screw sleeve, a main flange is arranged on the outer side of the main pipe and is positioned on the inner side of the screw sleeve, and one end of the main pipe provided with the main flange is also provided with a conical cylinder which protrudes outwards; a connecting flange with the same size as the main flange is arranged at the connecting end of the connecting pipe, and the end, provided with the connecting flange, of the connecting pipe is of a trumpet-shaped structure capable of being clamped with the conical cylinder extending out of the main pipe; a plurality of mounting grooves used for mounting the clamping blocks are formed in the inner wall of the threaded sleeve, and springs used for pushing the clamping blocks to extend outwards are further arranged in the mounting grooves. Even if the pipeline shakes, the main flange and the connecting flange can be tightly connected again under the action of the clamping blocks, so that gaps at the joint are avoided, and the using effect of the pipeline can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of thermal power plant, especially relates to a thermal power plant heat supply pipeline sealing device. BACKGROUND

[0002] Thermal power plant, generally refers to thermal power plant, thermal power plant etc. It is the heat energy produced by using coal, petroleum, natural gas etc. Solid, liquid fuel combustion conversion for kinetic energy to produce electric power factory.

[0003] Thermal power plant plays a major role in the development of national economy and the improvement of people's living standards, when the operation of each part of the equipment in the thermal power plant, there are clear division of labor pipeline, the gas or liquid in the main pipeline of thermal power plant is mostly high heat and high pressure, therefore, when using, all need good sealing.

[0004] And the existing pipeline uses, in order to prevent leakage, usually from the pipe material and the connecting part of each pipeline takes measures, but the existing pipeline sealing structure usually all single use closed ring to close the pipeline, the closed effect is not obvious, and when the pipeline is shaken, the connecting part is easy to appear gap, leading to sealing failure. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of thermal power plant heat supply pipeline sealing device, the technical scheme as follows is used:

[0006] A kind of thermal power plant heat supply pipeline sealing device, including main pipe and connecting pipe, the connecting end of the main pipe is equipped with a screw sleeve, a main flange is arranged on the outside of main pipe and located the inside of screw sleeve, a outwardly protruding cone cylinder is further arranged at the end of main pipe where main flange is arranged;A connecting flange of equal size with main flange is arranged at the connecting end of connecting pipe, and the end of connecting pipe where connecting flange is arranged is the horn-shaped structure capable of being clamped with the cone cylinder protruding from main pipe.

[0007] A plurality of installation grooves for installing clamping block are formed in the inner wall of screw sleeve, and a spring for pushing clamping block outward is further arranged in installation groove.

[0008] Further, a boss is arranged on the outside of main pipe and behind screw sleeve, which can prevent screw sleeve from moving backward.

[0009] Further, a sealing gasket is arranged between connecting flange and main flange, which can ensure the sealing between connecting flange and main flange.

[0010] Further, an internal thread is arranged on the inside of screw sleeve, and an external thread is arranged on the outside of connecting flange, by rotating screw sleeve, screw sleeve can be connected with connecting flange, under the tension of screw sleeve, connecting flange and main flange are in close contact.

[0011] Further, a sleeve is arranged inside the connecting pipe, and the taper cylinder is provided with an annular groove corresponding to the sleeve at one end.

[0012] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0013] The utility model discloses a taper cylinder is arranged on one end of the main pipe, and the outer wall of the taper cylinder is attached to the inner wall of the connecting pipe, thereby reducing the pressure at the connecting position of the main pipe and the connecting pipe and improving the overall sealing effect of the pipeline.

[0014] After the main pipe is connected with the connecting pipe, the clamping block can clamp the connecting flange under the action of the spring, effectively avoiding the separation of the screw sleeve and the connecting flange, so that the main flange and the connecting flange can be restored to tight connection under the action of the clamping block even if the pipeline shakes, thereby avoiding the appearance of gaps at the connecting position and improving the use effect of the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the utility model;

[0016] Figure 2 It is the explosion decomposition structure schematic diagram of the utility model;

[0017] Figure 3 It is the internal structure schematic diagram of the connecting position of the utility model;

[0018] Figure 4 It is the structure enlarged schematic diagram of the utility model Figure 2 in A place;

[0019] Figure 5 It is the structure enlarged schematic diagram of the utility model Figure 3 in B place;

[0020] Figure 6 It is the structure enlarged schematic diagram of the utility model Figure 3 in C place.

[0021] In the drawing:

[0022] 1-main pipe, 11-convex table, 12-main flange, 13-taper cylinder, 2-connecting pipe, 21-connecting flange, 22-sleeve, 3-screw sleeve, 31-installation groove, 32-spring, 33-clamping block, 4-sealing pad. DETAILED DESCRIPTION

[0023] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0024] As shown in the accompanying Figures 1-6 .

[0025] A heat supply pipeline sealing device for a thermal power plant comprises a main pipe 1 and a connecting pipe 2, a screw sleeve 3 is arranged at the connecting end of the main pipe 1, a boss 11 is arranged at the outer side of the main pipe 1 and located at the rear side of the screw sleeve 3, a main flange 12 is arranged at the front side of the screw sleeve 3, and a conical cylinder 13 protruding outward is further arranged at one end of the main pipe 1 where the main flange 12 is arranged; a connecting flange 21 equal in size to the main flange 12 is arranged at the connecting end of the connecting pipe 2, and one end of the connecting pipe 2 where the connecting flange 21 is arranged is in a horn structure and can be clamped with the conical cylinder 13 protruding from the main pipe 1.

[0026] A sealing gasket 4 is arranged between the connecting flange 21 and the main flange 12, an internal thread is arranged at the inner side of the screw sleeve 3, and an external thread is arranged at the outer side of the connecting flange 21; after the main pipe 1 and the connecting pipe 2 are clamped, the connecting flange 21 can be tightly connected with the main flange 12 by rotating the screw sleeve 3, and the connection between the main pipe 1 and the connecting pipe 2 can be realized through the above structure.

[0027] A sleeve 22 is arranged in the connecting pipe 2, and an annular groove corresponding to the sleeve 22 is arranged at one end of the conical cylinder 13 in the main pipe 1; after the connecting pipe 2 and the main pipe 1 are connected, the sleeve 22 is embedded in the annular groove in the conical cylinder 13.

[0028] A plurality of mounting grooves 31 for mounting the clamping block 33 are arranged in the inner wall of the screw sleeve 3, and a spring 32 for pushing the clamping block 33 outward is further arranged in the mounting groove 31; the number of the mounting grooves 31 can be 3-6, and each mounting groove 31 is spaced apart by a certain angle; as shown in the accompanying Figure 5 , through the structure, when the screw sleeve 3 is connected with the connecting flange 21, the clamping block 33 can be clamped at one end of the connecting flange 21 facing the connecting pipe 2, and the end edge of the connecting flange 21 is chamfered, which can better contact the clamping block 33; the clamping block 33 generates a pushing force under the pushing of the spring 32, and moves the connecting flange 21 in the direction facing the main flange 12, thereby preventing the connecting flange 21 from moving reversely and avoiding the connection between the main flange 12 and the connecting flange 21 from having a gap.

[0029] The use process is that the sealing gasket 4 is first clamped on the side of the main flange 12, then the main pipe 1 is connected with the connecting pipe 2, in the connecting process, the sleeve 3 is first moved to be in contact with the rear side boss 11, the connecting pipe 2 is clamped with the main pipe 1 as close as possible, then the sleeve 3 is rotated to drive the connecting flange 21 to move to the side of the main flange 12 through the thread between the sleeve 3 and the connecting flange 21, when the sleeve 3 and the connecting flange 21 are in rotating contact, the clamping block 33 can be first extended and retracted, after the position of the clamping block 33 is moved to the rear side of the connecting flange 21, the clamping block 33 is re-extended to resist the connecting flange.

[0030] After the above work is completed, the main pipe 1 is connected with the connecting pipe 2, under the action of the clamping block 33, the sleeve 3 and the connecting flange 21 can be effectively prevented from being separated, and the connection stability is improved; by embedding the sleeve 22 into the inside of the conical cylinder 13, the deformation of the conical cylinder 13 in subsequent use can be avoided, and the smoothness of the pipeline can be ensured.

[0031] The technical scheme of the utility model, or the technical scheme inspired by the technical scheme of the utility model, is used to design similar technical schemes, so that the above technical effects are achieved, and all of them fall within the protection scope of the utility model.

Claims

1. A sealing device for a heating pipeline in a thermal power plant, comprising a main pipe (1) and a connecting pipe (2), characterized in that: The connecting end of the main pipe (1) is provided with a threaded sleeve (3), and a main flange (12) is provided on the outside of the main pipe (1) and inside the threaded sleeve (3). A cone (13) protruding outward is also provided at one end of the main pipe (1) where the main flange (12) is provided. A connecting flange (21) of the same size as the main flange (12) is provided at the connecting end of the connecting pipe (2). One end of the connecting flange (21) on the connecting pipe (2) is a horn-shaped structure that can engage with the cone (13) protruding from the main pipe (1). Multiple mounting slots (31) for mounting the locking block (33) are provided in the inner wall of the screw sleeve (3), and a spring (32) for pushing the locking block (33) outward is also provided in the mounting slot (31).

2. The sealing device for a heating pipeline in a thermal power plant as described in claim 1, characterized in that: A boss (11) is provided on the outside of the main tube (1) and behind the screw sleeve (3).

3. The sealing device for a heating pipeline in a thermal power plant as described in claim 1, characterized in that: A sealing gasket (4) is provided between the connecting flange (21) and the main flange (12).

4. A sealing device for a heating pipeline in a thermal power plant as described in claim 1, characterized in that: The inner side of the threaded sleeve (3) is provided with an internal thread, and the outer side of the connecting flange (21) is provided with an external thread.

5. A sealing device for a heating pipeline in a thermal power plant as described in claim 1, characterized in that: A sleeve (22) is provided inside the connecting pipe (2).

6. A sealing device for a heating pipeline in a thermal power plant as described in claim 5, characterized in that: An annular groove corresponding to the sleeve (22) is provided at one end of the conical cylinder (13) in the main tube (1).

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