A gas field pipeline flange cover with leakage prevention

Abstract

The utility model relates to a kind of gas field pipeline flange cover with leakage prevention, belong to gas field pipeline equipment technical field.The gas field pipeline flange cover with leakage prevention, comprising: flange cover body, flange cover body includes left shield, flange, right shield and pipe body;Leakage prevention mechanism, leakage prevention mechanism includes right pipe cover, left pipe cover and for improving the sealing assembly of the sealing property between left shield and right shield, right pipe cover and left pipe cover are symmetrically arranged in left shield and right shield two sides;Through left shield and right shield, flange is covered, then through right pipe cover and left pipe cover, the part of pipe body that extends is covered, and through the sealing assembly between left shield and right shield, ensure that the gas that flange leaks does not leak from between left shield and right shield, through the sealing assembly between right pipe cover and left pipe cover, further avoid the gas that flange leaks leaks along pipe body, to improve the sealing property of overall flange cover, avoid flange leak under complex working condition.

Description

Technical Field

[0001] This utility model relates to the field of gas field pipeline equipment technology, and in particular to a gas field pipeline flange cover with leak-proof function. Background Technology

[0002] In the production and operation of gas fields, pipeline transportation is the main method of natural gas delivery. Pipelines are usually connected by flanges. However, due to the complex environment of gas fields, pipelines are affected by various factors such as temperature changes, pressure fluctuations, geological subsidence, and corrosion, which can easily lead to leakage problems at the flange connections. Therefore, flange covers are often fitted over the outside of the pipeline flanges for protection.

[0003] Currently, existing flange protection measures for gas field pipelines have many shortcomings. Common flange covers, due to their simple structure, are mostly used to protect the flange from impacts and scratches, resulting in poor sealing performance and difficulty in effectively resisting the risk of leakage under complex operating conditions. Utility Model Content

[0004] Therefore, it is necessary to provide a leak-proof gas field pipeline flange to address the common problem of poor sealing performance of flange covers, which makes it difficult to effectively resist the risk of leakage under complex working conditions.

[0005] A gas field pipeline flange cover with leak-proof features includes: a flange cover body, the flange cover body including a left guard, a flange, a right guard and a pipe body, the left guard and the right guard are sleeved on the outer arc surface of the flange; The leak prevention mechanism includes a right pipe cover, a left pipe cover, and a sealing assembly for improving the sealing between the left and right protective covers. The right and left pipe covers are provided in two sets, and the two sets of right and left pipe covers are symmetrically arranged on both sides of the left and right protective covers. The auxiliary mechanism is provided in two sets, which are respectively located inside the left and right protective covers.

[0006] In one embodiment, the sealing assembly includes a main sealing strip, a sealing block, and a snap-fit ​​sealing strip. The main sealing strip is disposed on the side of the right cover near the left cover, the sealing block is disposed on the side of the main sealing strip near the left cover, and the side of the left cover near the right cover has a sealing main groove corresponding to the main sealing strip.

[0007] In one embodiment, the snap-fit ​​sealing strip is provided in two sets, and the two sets of snap-fit ​​sealing strips are located on the side of the left cover near the right cover. The two sets of snap-fit ​​sealing strips have sealing grooves on their sides that correspond to the sealing blocks.

[0008] In one embodiment, the sealing assembly further includes a side sealing strip and an annular sealing strip. Two sets of side sealing strips are provided, and the two sets of side sealing strips are symmetrically arranged on the side of the right tube cover near the left tube cover. A sealing side groove corresponding to the side sealing strip is opened on the side of the left tube cover near the right tube cover.

[0009] In one embodiment, the annular sealing strip is provided in several groups, and the several groups of annular sealing strips are symmetrically arranged between two groups of right tube covers and left tube covers, and the outer arc surfaces of the right tube covers and left tube covers are fitted with cable ties.

[0010] In one embodiment, the right and left tube covers are fitted onto the outer arc surface of the tube body, and the tube body is in contact with several sets of annular sealing strips.

[0011] In one embodiment, the two sets of auxiliary mechanisms include inflatable sealing covers and inflatable tubes. The two sets of inflatable sealing covers are respectively disposed inside the left and right protective covers. The inflatable tubes are sealed to the corresponding inflatable sealing covers, and the top ends of the two sets of inflatable tubes respectively seal through the left and right protective covers.

[0012] In one embodiment, the left and right shields are connected on one side by a hinge, and the left and right shields are connected on the other side by a snap fastener.

[0013] Beneficial effects 1. The aforementioned gas field pipeline flange cover encloses the flange with a left and right protective cover, and then encloses the protruding part of the pipe body with a right and left pipe cover. The sealing component between the left and right protective covers ensures that gas leaking from the flange will not leak between the left and right protective covers. The sealing component between the right and left pipe covers further prevents gas leaking from the flange from leaking along the pipe body, thereby improving the overall sealing performance of the flange cover and preventing flange leakage under complex operating conditions.

[0014] 2. The gas field pipeline flange cover mentioned above is equipped with an inflatable sealing cover inside the left and right protective covers, with the inflatable sealing cover located between the protective cover and the flange. The inflatable sealing cover is inflated with air through an inflation pipe. The flange is wrapped by the two sets of inflatable sealing covers, thereby reducing the impact force on the flange and further reducing the risk of gas leakage. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 For the present utility model Figure 2 Side view; Figure 5 This utility model Figure 4 Enlarged view of point B in the middle.

[0017] Reference numerals: 100, flange cover body; 200, leak-proof mechanism; 300, auxiliary mechanism; 101, left protective cover; 102, snap fastener; 103, flange; 104, right protective cover; 105, pipe body; 201, right pipe cover; 202, left pipe cover; 203, cable tie; 204, main sealing strip; 205, sealing block; 206, side sealing strip; 207, annular sealing strip; 208, sealing side groove; 209, sealing main groove; 210, snap-fit ​​sealing strip; 211, sealing groove; 301, inflatable sealing cover; 302, inflatable pipe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The following is combined with Figures 1-5 This invention describes a gas field pipeline flange cover with leak-proof design.

[0020] In one embodiment, a gas field pipeline flange cover with leak-proof features includes: a flange cover body 100, the flange cover body 100 including a left cover 101, a flange 103, a right cover 104 and a pipe body 105, the left cover 101 and the right cover 104 being sleeved on the outer arc surface of the flange 103, the left cover 101 and the right cover 104 being connected on one side by a hinge, and the left cover 101 and the right cover 104 being connected on the other side by a buckle 102; In this embodiment, extension plates for mounting hinges are provided on one side of the left cover 101 and the right cover 104, thereby ensuring that there are no gaps between the left cover 101 and the right cover 104 due to the installation of hinges. After the left cover 101 and the right cover 104 cover the outside of the flange 103, the left cover 101 and the right cover 104 are quickly locked by the buckle 102, thereby ensuring the stability of the connection between the left cover 101 and the right cover 104, and improving the efficiency of the assembly and disassembly of the left cover 101 and the right cover 104.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the leak-proof mechanism 200 includes a right pipe cover 201, a left pipe cover 202, and a sealing assembly for improving the sealing between the left protective cover 101 and the right protective cover 104. Two sets of right pipe covers 201 and left pipe covers 202 are provided, symmetrically arranged on both sides of the left protective cover 101 and the right protective cover 104. The sealing assembly includes a main sealing strip 204, a sealing block 205, and a snap-fit ​​sealing strip 210. The main sealing strip 204 is located on the right... The protective cover 104 is located on the side of the left protective cover 101. The sealing block 205 is located on the side of the main sealing strip 204 near the left protective cover 101. The left protective cover 101 is located on the side of the right protective cover 104 and has a sealing main groove 209 corresponding to the main sealing strip 204. Two sets of snap-fit ​​sealing strips 210 are provided. The two sets of snap-fit ​​sealing strips 210 are located on the side of the left protective cover 101 near the right protective cover 104. The two sets of snap-fit ​​sealing strips 210 have sealing grooves 211 corresponding to the sealing block 205 on their sides. In this embodiment, a set of left pipe covers 202 are respectively provided at the upper and lower ends of the left cover 101, and a set of right pipe covers 201 are respectively provided at the upper and lower ends of the right cover 104. After the left cover 101 and the right cover 104 are connected, the right pipe covers 201 and the left pipe covers 202 are connected synchronously. When the left cover 101 and the right cover 104 are connected, the main sealing strip 204 on the side of the right cover 104 is inserted into the sealing main groove 209 on the side of the left cover 101. At this time, the sealing block 205 is inserted into the sealing groove 211 on the side of the snap-on sealing strip 210, thereby ensuring the sealing performance of the connection between the main sealing strip 204 and the snap-on sealing strip 210, and thus ensuring the sealing performance of the connection between the left cover 101 and the right cover 104, preventing the gas leaking from the flange 103 from leaking from the inside of the left cover 101 and the right cover 104 to the outside.

[0022] like Figure 3 and Figure 5As shown, the sealing assembly also includes a side sealing strip 206 and an annular sealing strip 207. Two sets of side sealing strips 206 are provided, and the two sets of side sealing strips 206 are symmetrically arranged on the side of the right tube cover 201 near the left tube cover 202. The left tube cover 202 near the right tube cover 201 has a sealing side groove 208 corresponding to the side sealing strips 206. Several sets of annular sealing strips 207 are provided, and the several sets of annular sealing strips 207 are symmetrically arranged between the two sets of right tube covers 201 and left tube covers 202. The outer arc surfaces of the right tube cover 201 and left tube cover 202 are fitted with cable ties 203. The right tube cover 201 and left tube cover 202 are fitted onto the outer arc surface of the tube body 105, and the tube body 105 is in contact with the several sets of annular sealing strips 207. In this embodiment, when the left protective cover 101 and the right protective cover 104 are closed, the right pipe cover 201 and the left pipe cover 202 are closed simultaneously. Then, the right pipe cover 201 and the left pipe cover 202 are wrapped by the cable tie 203, which further ensures the stability of the connection between the right pipe cover 201 and the left pipe cover 202. At this time, the side sealing strip 206 on the side of the right pipe cover 201 will be inserted into the sealing side groove 208 on the side of the left pipe cover 202, thereby sealing the connection between the right pipe cover 201 and the left pipe cover 202. At this time, several sets of annular sealing strips 207 will contact the pipe body 105, and the annular sealing strips 207 will be completely adhered to the pipe body 105 under the compression of the right pipe cover 201 and the left pipe cover 202, thereby ensuring that the gas leaking from the flange 103 will not leak to the outside along the direction of the pipe body 105, thus ensuring that the overall gas field pipeline flange has a leak-proof function.

[0023] like Figure 1 and Figure 2 As shown, there are two sets of auxiliary mechanisms 300, which are respectively located inside the left protective cover 101 and the right protective cover 104. Each set of auxiliary mechanisms 300 includes an inflatable sealing cover 301 and an inflation pipe 302. The two sets of inflatable sealing covers 301 are respectively located inside the left protective cover 101 and the right protective cover 104. The inflation pipe 302 is sealed and connected to the corresponding inflatable sealing cover 301. The top ends of the two sets of inflation pipes 302 are sealed and penetrate through the left protective cover 101 and the right protective cover 104 respectively. In this embodiment, after the left protective cover 101 and the right protective cover 104 are closed, air is injected into the air-filled sealing cover 301 through the air-filling pipe 302. The air-filling pipe 302 is equipped with a plug. After the air-filled sealing cover 301 is fully inflated, the air-filling pipe 302 is plugged, thereby ensuring that the air-filled sealing cover 301 is fully inflated. The flange 103 is wrapped by the two sets of air-filled sealing covers 301. Since the air-filled sealing cover 301 is filled with gas, it will be completely sealed to the flange 103, thereby further preventing gas leakage from the flange 103 to the outside. At the same time, the air-filled sealing cover 301 further enhances the protection of the flange 103 and reduces the impact on the flange 103 when it is hit.

[0024] Working principle: Open the left protective cover 101 and the right protective cover 104, then place the flange 103 between the two sets of inflatable sealing covers 301, and then lock the left protective cover 101 and the right protective cover 104 with the buckle 102. Then, use two sets of cable ties 203 to tie the corresponding right pipe cover 201 and left pipe cover 202 together, thereby ensuring the stability of the connection between the left protective cover 101 and the right protective cover 104 and the right pipe cover 201 and the left pipe cover 202. At this time, the main sealing strip 204 is inserted into the sealing main groove 209, and the sealing block 205 is inserted into the sealing groove 211. The side sealing strip 206 is inserted into the sealing side groove 208, and several sets of annular sealing strips 207 are tightly attached to the pipe body 105, thereby preventing gas leakage to the outside through multi-layer sealing. Then, air is injected into the air-filled sealing cover 301 through the air-filling pipe 302. After the air-filled sealing cover 301 is fully inflated, the air-filling pipe 302 is blocked, thereby allowing the air-filled sealing cover 301 to fit against the flange 103, further improving the overall leak-proof capability of the flange cover, while reducing the impact force on the flange 103 when it is hit, thus strengthening the protection of the flange 103.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gas field pipeline flange cover with leak-proof design, characterized in that, include: The flange cover body (100) includes a left cover (101), a flange (103), a right cover (104) and a pipe body (105), wherein the left cover (101) and the right cover (104) are fitted onto the outer arc surface of the flange (103); Leakage prevention mechanism (200) includes a right pipe cover (201), a left pipe cover (202) and a sealing assembly for improving the sealing between the left protective cover (101) and the right protective cover (104). The right pipe cover (201) and the left pipe cover (202) are each provided with two sets, and the two sets of the right pipe cover (201) and the left pipe cover (202) are symmetrically arranged on both sides of the left protective cover (101) and the right protective cover (104). The auxiliary mechanism (300) is provided in two sets, which are respectively located inside the left shield (101) and the right shield (104).

2. The gas field pipeline flange cover with leak-proof design according to claim 1, characterized in that, The sealing assembly includes a main sealing strip (204), a sealing block (205), and a snap-fit ​​sealing strip (210). The main sealing strip (204) is disposed on the right cover (104) near the left cover (101). The sealing block (205) is disposed on the main sealing strip (204) near the left cover (101). The left cover (101) near the right cover (104) has a sealing main groove (209) corresponding to the main sealing strip (204).

3. The gas field pipeline flange cover with leak-proof design according to claim 2, characterized in that, The snap-fit ​​sealing strip (210) is provided in two sets. The two sets of snap-fit ​​sealing strips (210) are located on the side of the left cover (101) near the right cover (104). The two sets of snap-fit ​​sealing strips (210) have sealing grooves (211) corresponding to the sealing block (205) on their sides.

4. The gas field pipeline flange cover with leak-proof design according to claim 2, characterized in that, The sealing assembly further includes a side sealing strip (206) and an annular sealing strip (207). The side sealing strip (206) is provided in two sets, and the two sets of side sealing strips (206) are symmetrically arranged on the side of the right tube cover (201) near the left tube cover (202). The left tube cover (202) near the right tube cover (201) has a sealing side groove (208) corresponding to the side sealing strip (206).

5. The gas field pipeline flange cover with leak-proof design according to claim 4, characterized in that, The annular sealing strip (207) is provided in several groups, and the several groups of annular sealing strips (207) are symmetrically arranged between the two groups of right tube cover (201) and left tube cover (202), and the outer arc surface of the right tube cover (201) and left tube cover (202) is sleeved with cable ties (203).

6. The gas field pipeline flange cover with leak-proof design according to claim 4, characterized in that, The right tube cover (201) and the left tube cover (202) are fitted onto the outer arc surface of the tube body (105), and the tube body (105) is in contact with several sets of annular sealing strips (207).

7. The gas field pipeline flange cover with leak-proof design according to claim 1, characterized in that, The two sets of auxiliary mechanisms (300) include an inflatable sealing cover (301) and an inflation tube (302). The two sets of inflatable sealing covers (301) are respectively disposed inside the left cover (101) and the right cover (104). The inflation tube (302) is sealed and connected to the corresponding inflatable sealing cover (301). The top ends of the two sets of inflation tubes (302) are sealed and penetrate the left cover (101) and the right cover (104) respectively.

8. The gas field pipeline flange cover with leak-proof design according to claim 1, characterized in that, The left shield (101) and the right shield (104) are connected on one side by a hinge, and on the other side by a buckle (102).

Images