阅读说明：本技术 一种双层冰塞夹套 (Double-layer ice plug jacket ) 是由 陈建栋 徐华 邱晓波 袁丽丽 于 2019-10-30 设计创作，主要内容包括：本发明公开一种双层冰塞夹套,属于保温夹套技术领域。该双层冰塞夹套包括上腔室和下腔室,所述上腔室和所述下腔室均为圆弧形,且沿水平面上下对称；所述上腔室两开口端均固定连接有上压板,所述下腔室两开口端均固定连接有下压板,所述上腔室和所述下腔室通过所述上压板和所述下压板上若干个螺栓孔固定连接；所述上腔室和所述下腔室的圆弧顶端均设有加注接头,用于上下同时加注液氮；所述上腔室上还设有若干个泄压阀,用于排出残留空气,保证所述上腔室和所述下腔室内充满液氮；所述上腔室和所述下腔室均为双层结构,且在封闭腔室内均填充有保温材料,能够在充入液氮后,最大程度的降低冷气的外泄,大大节约经济成本。(The invention discloses a double-layer ice plug jacket, and belongs to the technical field of heat-preservation jackets. The double-layer ice plug jacket comprises an upper cavity and a lower cavity, wherein the upper cavity and the lower cavity are both arc-shaped and are vertically symmetrical along a horizontal plane; the two open ends of the upper cavity are fixedly connected with upper pressing plates, the two open ends of the lower cavity are fixedly connected with lower pressing plates, and the upper cavity and the lower cavity are fixedly connected through a plurality of bolt holes in the upper pressing plates and the lower pressing plates; the circular arc top ends of the upper chamber and the lower chamber are respectively provided with a filling joint for filling liquid nitrogen up and down simultaneously; the upper chamber is also provided with a plurality of pressure relief valves for discharging residual air and ensuring that the upper chamber and the lower chamber are filled with liquid nitrogen; go up the cavity with lower cavity is bilayer structure, and all pack in the closed cavity has insulation material, can fill into the liquid nitrogen after, and furthest's reduction air conditioning leaks, practices thrift economic cost greatly.)

1. The double-layer ice plug jacket is characterized by comprising an upper chamber (1) and a lower chamber (2), wherein the upper chamber (1) and the lower chamber (2) are both arc-shaped and are vertically symmetrical along a horizontal plane;

the two open ends of the upper chamber (1) are fixedly connected with upper pressure plates (11), the two open ends of the lower chamber (2) are fixedly connected with lower pressure plates (21), and the upper chamber (1) and the lower chamber (2) are fixedly connected through a plurality of bolt holes (3) in the upper pressure plates (11) and the lower pressure plates (21);

the circular arc top ends of the upper chamber (1) and the lower chamber (2) are respectively provided with a filling joint (4) for filling liquid nitrogen up and down simultaneously;

the upper chamber (1) is also provided with a plurality of pressure release valves (5) for discharging residual air to ensure that the upper chamber (1) and the lower chamber (2) are filled with liquid nitrogen.

2. The double-deck ice plug jacket according to claim 1, wherein the upper chamber (1) is formed by welding a first arc outer liner (12), a first arc inner liner (13), a first end cap outer liner (14) and a first end cap inner liner (15), and a closed chamber formed by welding the first arc outer liner (12), the first arc inner liner (13), the first end cap outer liner (14) and the first end cap inner liner (15) is filled with a thermal insulation material.

3. The double-deck ice plug jacket according to claim 1, wherein the lower chamber (2) is formed by welding a second circular arc outer liner plate (22), a second circular arc inner liner plate (23), a second end cap outer liner plate (24) and a second end cap inner liner plate (25), and a closed chamber formed by welding the second circular arc outer liner plate (22), the second circular arc inner liner plate (23), the second end cap outer liner plate (24) and the second end cap inner liner plate (25) is filled with a thermal insulation material.

4. The double-layer ice plug jacket according to claim 1, wherein a thermocouple holder (6) is further provided on the upper chamber (1), and a thermocouple temperature sensor is placed in the thermocouple holder (6) for monitoring temperature changes between the upper chamber (1) and the lower chamber (2) and the outer wall of the pipe.

5. Double-deck ice plug jacket according to claim 1, characterized in that a plurality of keels (8) are welded in the upper chamber (1) and the lower chamber (2) for reinforcing the rigidity of the upper chamber (1) and the lower chamber (2).

6. The double-layer ice plug jacket according to claim 1, wherein a first sealing groove (111) is formed in the upper pressure plate (11), a second sealing groove (211) is formed in the lower pressure plate (21), and a sealing strip (9) is disposed in the first sealing groove (111) and the second sealing groove (211).

7. The double-layered ice plug jacket according to claim 6, wherein the gaps between said upper pressing plate (11) and said lower pressing plate (21) are filled with a sealant.

8. The double-layer ice plug jacket according to claim 1, wherein the upper chamber (1) is provided with hanging rings (7) at both ends thereof for hanging the upper chamber (1) by screw threads.

Technical Field

The invention relates to the technical field of heat-insulating jackets, in particular to a double-layer ice plug jacket.

Background

In the field of nuclear power plant pipeline maintenance, the pipeline needs to be maintained, and the most common mode is to isolate the pipeline. If the field operation space is limited, or the stop valve fails, or a place without the valve is encountered, the ice plug method is adopted for isolating the interior of the pipeline. When the ice plug is formed, a jacket structure is needed, and a refrigerant is injected into the jacket to cool and freeze the medium in the pipeline to form a section of pressure-resistant ice column, so that the damaged part of the pipeline is replaced.

The existing ice plug jacket structure generally comprises two symmetrical containers, the sections of which are semicircular and are attached to a pipeline. The inner diameter of the jacket is slightly larger than the outer diameter of the pipeline, the outer diameter of the jacket is of a single-layer structure, and the size of the jacket is customized according to the outer diameter of the pipeline. The ice plug jacket has a simple structure, has poor heat insulation performance when freezing the pipeline, and needs more refrigerants to maintain the state of the freezing pipeline.

Disclosure of Invention

The invention aims to provide a double-layer ice plug jacket to solve the problems that the existing ice plug jacket is thin in jacket wall and poor in heat preservation performance, and needs more refrigerants to maintain the state of a freezing pipeline.

In order to solve the technical problem, the invention provides a double-layer ice plug jacket which comprises an upper cavity and a lower cavity, wherein the upper cavity and the lower cavity are both arc-shaped and are vertically symmetrical along a horizontal plane;

the two open ends of the upper cavity are fixedly connected with upper pressing plates, the two open ends of the lower cavity are fixedly connected with lower pressing plates, and the upper cavity and the lower cavity are fixedly connected through a plurality of bolt holes in the upper pressing plates and the lower pressing plates;

the circular arc top ends of the upper chamber and the lower chamber are respectively provided with a filling joint for filling liquid nitrogen up and down simultaneously;

the upper chamber is also provided with a plurality of pressure release valves for discharging residual air and ensuring that the upper chamber and the lower chamber are filled with liquid nitrogen.

Optionally, go up the cavity and weld by first circular arc outer liner board, first circular arc interior bushing plate, first end cover outer liner board and first end cover interior bushing plate and form, by first circular arc outer liner board first circular arc interior bushing plate first end cover outer liner board with the airtight cavity intussuseption that first end cover interior bushing plate welding is constituteed is filled with insulation material.

Optionally, the lower chamber is formed by welding a second arc outer liner plate, a second arc inner liner plate, a second end cover outer liner plate and a second end cover inner liner plate, and a closed chamber formed by welding the second arc outer liner plate, the second arc inner liner plate, the second end cover outer liner plate and the second end cover inner liner plate is filled with a heat insulation material.

Optionally, a thermocouple seat is further disposed on the upper chamber, and a thermocouple temperature sensor is disposed in the thermocouple seat and used for monitoring temperature changes between the upper chamber and the lower chamber and between the upper chamber and the outer wall of the pipeline.

Optionally, a plurality of keels are further welded in the upper chamber and the lower chamber, and are used for enhancing the rigidity of the upper chamber and the lower chamber.

Optionally, a first sealing groove is formed in the upper pressing plate, a second sealing groove is formed in the lower pressing plate, and sealing strips are placed in the first sealing groove and the second sealing groove.

Optionally, the gaps between the upper pressing plate and the lower pressing plate are filled with sealant.

Optionally, two ends of the upper chamber are respectively connected with a lifting ring through threads, and the lifting rings are used for lifting the upper chamber.

The invention provides a double-layer ice plug jacket which comprises an upper cavity and a lower cavity, wherein the upper cavity and the lower cavity are both arc-shaped and are vertically symmetrical along a horizontal plane; the two open ends of the upper cavity are fixedly connected with upper pressing plates, the two open ends of the lower cavity are fixedly connected with lower pressing plates, and the upper cavity and the lower cavity are fixedly connected through a plurality of bolt holes in the upper pressing plates and the lower pressing plates; the circular arc top ends of the upper chamber and the lower chamber are respectively provided with a filling joint for filling liquid nitrogen up and down simultaneously; the upper chamber is also provided with a plurality of pressure relief valves for discharging residual air and ensuring that the upper chamber and the lower chamber are filled with liquid nitrogen; go up the cavity with lower cavity is bilayer structure, and all pack in the closed cavity has insulation material, can fill into the liquid nitrogen after, and furthest's reduction air conditioning leaks, practices thrift economic cost greatly.

Drawings

FIG. 1 is a schematic view of the overall structure of a double-layer ice plug jacket according to the present invention;

FIG. 2 is a cross-sectional view of a double-layered ice plug jacket according to the present invention;

FIG. 3 is a left side view of a double layer ice plug jacket provided by the present invention;

FIG. 4 is an enlarged view of the position of a double-layer ice plug jacket seal strip provided by the invention.

Detailed Description

The double-layer ice plug jacket according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

The invention provides a double-layer ice plug jacket, which comprises an upper chamber 1 and a lower chamber 2 as shown in figures 1 and 2, wherein the upper chamber 1 and the lower chamber 2 are both arc-shaped and are vertically symmetrical along a horizontal plane; the two open ends of the upper chamber 1 are fixedly connected with an upper pressure plate 11, the two open ends of the lower chamber 2 are fixedly connected with a lower pressure plate 21, and the upper chamber 1 and the lower chamber 2 are fixedly connected through a plurality of bolt holes 3 on the upper pressure plate 11 and the lower pressure plate 21; the circular arc top ends of the upper chamber 1 and the lower chamber 2 are respectively provided with a filling joint 4 for filling liquid nitrogen up and down simultaneously; the upper chamber 1 is also provided with a plurality of pressure relief valves 5 for discharging residual air, so that the upper chamber 1 and the lower chamber 2 are ensured to be filled with liquid nitrogen, and the pressure relief valves 5 are closed after the liquid nitrogen is added, so that the liquid nitrogen can be prevented from leaking; the upper chamber 1 is formed by welding a first arc outer lining plate 12, a first arc inner lining plate 13, a first end cover outer lining plate 14 and a first end cover inner lining plate 15, and a heat insulation material is filled in a closed chamber formed by welding the first arc outer lining plate 12, the first arc inner lining plate 13, the first end cover outer lining plate 14 and the first end cover inner lining plate 15; the lower chamber 2 is formed by welding a second arc outer lining plate 22, a second arc inner lining plate 23, a second end cover outer lining plate 24 and a second end cover inner lining plate 25, and a closed chamber formed by welding the second arc outer lining plate 22, the second arc inner lining plate 23, the second end cover outer lining plate 24 and the second end cover inner lining plate 25 is filled with a heat insulation material; and two ends of the upper chamber 1 are respectively connected with a lifting ring 7 through threads and used for lifting the upper chamber 1.

Further, a thermocouple seat 6 is further arranged on the upper chamber 1, and a thermocouple temperature sensor is placed in the thermocouple seat 6 and used for monitoring temperature changes between the upper chamber 1 and the lower chamber 2 as well as between the upper chamber and the outer wall of the pipeline; a plurality of keels 8 are welded in the upper chamber 1 and the lower chamber 2 and used for enhancing the rigidity of the upper chamber 1 and the lower chamber 2; open on the top board 11 has first seal groove 111, it has second seal groove 211 to open on the holding down plate 21, first seal groove 111 with sealing strip 9 has been placed in the second seal groove 211, top board 11 with it has sealed glue all to fill in the gap of holding down plate 21, will sealing strip 9 with sealed glue combines, can effectively prevent that the liquid nitrogen from following top board 11 with flow out in the gap of holding down plate 21.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.