Leakage treatment method for supporting sleeve of gas cabinet and gas cabinet

Abstract

The present invention provides a method for handling leakage of a gas tank support sleeve and a gas tank, relating to the technical field of gas tank maintenance. The method comprises the following steps: when the gas tank is switched to an overhaul state, controlling the carbon monoxide content and the oxygen content in the tank body to be lower than corresponding preset gas values ​​by replacement; raising the piston assembly so that the piston base plate is separated from the tank body bottom plate to a preset height difference; installing a concrete dam support rod in each support sleeve, installing multiple piston support rods below the piston base plate, lowering the piston assembly so that the concrete dam support rods and the piston support rods fall to the tank body bottom plate; raising the concrete dam, removing the concrete dam support rods from the concrete dam, assembling a liner in the support sleeve, and sealingly connecting the top end of the liner to the flange of the support sleeve and the bottom end of the liner to the piston base plate. The present invention effectively solves the problem of gas leakage in the later stage of a gas tank under normal working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of gas cabinet maintenance, and in particular to a method for handling leakage of a supporting sleeve of a gas cabinet and the gas cabinet. Background Art

[0002] Gas holders, such as two-stage rubber membrane sealed gas holders, are mainly used for the storage of converter gas in the steel and metallurgical industry. They participate in the online operation of the gas pipeline network and play a role in peak shaving and valley filling in the generation and utilization of converter gas.

[0003] The gas tank primarily comprises a tank body, a piston assembly, a T-shaped assembly, an inner membrane, and an outer membrane within the tank body. The T-shaped assembly is located above the piston assembly. The piston assembly primarily comprises a piston base plate, a piston fence, a concrete dam, and a support sleeve. The support sleeve is vertically inserted through the concrete dam and is used to mount concrete dam support rods within it during maintenance. The concrete dam is mounted within the piston fence, and the piston base plate is mounted at the bottom of the concrete dam. The T-shaped assembly primarily comprises a T-shaped baffle, which is sealed to the sidewalls of the tank body via the outer membrane and to the piston base plate via the inner membrane. When gas, such as coal gas, enters the inner and outer membranes within the tank body through the inlet pipe of the tank body, the inner and outer membranes expand and roll, causing the piston assembly to rise first, which in turn drives the T-shaped baffle to rise.

[0004] The gas flows from the air inlet of the cabinet to the outer membrane through the bottom of the concrete dam and enters the support sleeve. As the gas cabinet operates for a long time, the steel structure components in contact with the gas, such as the support sleeve, will be corroded and damaged, causing the gas to flow upward from the corroded and damaged parts of the support sleeve through the gaps in the concrete dam to enter the top of the piston assembly, causing gas leakage, thereby affecting the gas cabinet's gas storage operation. Summary of the Invention

[0005] The problem solved by the present invention is how to solve the problem of gas leakage caused by gas corrosion and damage to the supporting sleeve in the gas cabinet.

[0006] To address the above-mentioned problems, in a first aspect, the present invention provides a method for treating leakage of a support sleeve of a gas tank. The gas tank includes a tank body and a piston assembly. The piston assembly includes a piston base plate, a concrete dam, a support sleeve, and a liner. The concrete dam is disposed on the piston base plate. The support sleeve is passed through the concrete dam. The liner is embedded in the support sleeve. The top and bottom ends of the liner are sealedly connected to the flange of the support sleeve and the piston base plate, respectively.

[0007] The leakage treatment method comprises the following steps:

[0008] When the gas cabinet is switched to the maintenance state, the carbon monoxide content and the oxygen content in the cabinet are controlled to be lower than the corresponding gas preset values ​​respectively by replacement;

[0009] Raising the piston assembly so that the piston bottom plate is separated from the cabinet bottom plate of the cabinet body to a preset height difference;

[0010] Install a concrete dam support rod in each of the support sleeves, install multiple piston support rods below the piston bottom plate, and lower the piston assembly so that the concrete dam support rods and the piston support rods fall to the cabinet bottom plate;

[0011] The concrete dam is raised, the concrete dam support rod is removed from the concrete dam, and the liner is assembled in the support sleeve so that the top end of the liner is sealed to the flange of the support sleeve and the bottom end of the liner is sealed to the piston bottom plate.

[0012] Optionally, the step of raising the concrete dam, removing the support sleeve and the concrete dam support rod from the concrete dam, assembling the liner into the support sleeve, and sealingly connecting the top end of the liner to the flange of the support sleeve and the bottom end of the liner to the piston bottom plate comprises:

[0013] Installing a jacking device below the concrete dam and around the support rods of the concrete dam to lift the concrete dam so that the support rods of the concrete dam no longer bear the pressure of the concrete dam;

[0014] removing the concrete dam support rods in the concrete dam;

[0015] The liner is embedded in the interior of the support sleeve; the top end of the liner is sealed to the flange of the support sleeve, and the bottom end of the liner is sealed to the piston bottom plate;

[0016] cutting a portion of the top end of the liner that extends beyond the flange of the support sleeve;

[0017] The concrete dam support rod is passed through the liner from top to bottom, and the concrete dam support rod is connected to the flange of the support sleeve through fasteners.

[0018] Optionally, the step of raising the concrete dam, removing the concrete dam support rod from the concrete dam, assembling the liner into the support sleeve, sealingly connecting the top end of the liner to the flange of the support sleeve, and sealingly connecting the bottom end of the liner to the piston bottom plate further comprises:

[0019] Before embedding the liner in the support sleeve, the interior of the support sleeve is cleaned.

[0020] Optionally, after the concrete dam support rod and the piston support rod are lowered to the cabinet bottom plate, an inspection door provided on the side wall of the cabinet is opened to perform a safety inspection on the internal environment of the cabinet.

[0021] Optionally, when the gas cabinet is switched to the maintenance state, controlling the carbon monoxide content and the oxygen content in the cabinet to be lower than corresponding gas preset values ​​by replacement includes:

[0022] Stopping the gas tank from operating to switch it to the maintenance state;

[0023] By replacing coal gas with nitrogen, the carbon monoxide content in the cabinet is controlled to be lower than a first gas preset value;

[0024] By replacing nitrogen with air, the oxygen content in the cabinet is controlled to be lower than a second gas preset value.

[0025] Optionally, the gas cabinet further includes an air inlet pipeline, an air outlet pipeline, a nitrogen pipeline, a first bleed pipe, and a second bleed pipe, wherein the first bleed pipe is provided on the cabinet body, the air inlet pipeline and the air outlet pipeline are respectively connected to different second bleed pipes, and the air inlet pipeline, the air outlet pipeline, and the nitrogen pipeline are respectively connected to the cabinet body;

[0026] The replacing of coal gas with nitrogen to control the carbon monoxide content in the cabinet to be lower than a first gas preset value includes:

[0027] Opening the first vent pipe and the second vent pipe;

[0028] Filling nitrogen into the cabinet through the nitrogen pipeline, replacing the coal gas with the nitrogen, and discharging the coal gas from the first vent pipe and the second vent pipe through the gas outlet pipeline;

[0029] Close the first vent pipe and the second vent pipe, and raise the piston assembly to fully mix the nitrogen in the cabinet with the residual gas;

[0030] Open the first vent pipe and the second vent pipe, discharge the gas fully mixed with nitrogen and residual gas from the first vent pipe, and discharge it from the second vent pipe through the gas outlet pipeline until the carbon monoxide content in the cabinet is lower than the first gas preset value.

[0031] Optionally, replacing nitrogen with air to control the oxygen content in the cabinet to be lower than a second gas preset value includes:

[0032] Connect the air blowing device to the cabinet, and open the first vent pipe and the second vent pipe;

[0033] The blower device is controlled to operate, and air is blown into the cabinet, and the nitrogen is replaced by air, and the nitrogen is discharged from the first vent pipe and the second vent pipe through the air outlet pipeline until the oxygen content in the cabinet is lower than the preset value of the second gas.

[0034] Optionally, the gas cabinet further comprises an air inlet valve and an air outlet valve, wherein the air inlet valve is arranged on the air inlet pipeline, and the air outlet valve is arranged on the air outlet pipeline;

[0035] The step of stopping the gas holder to switch to the maintenance state includes:

[0036] The gas holder is stopped from operating, and the air inlet valve and the air outlet valve are closed, so that the gas holder is switched to the maintenance state.

[0037] Optionally, the gas cabinet further includes a nitrogen valve and a first blind plate, the nitrogen pipeline is connected to the cabinet, the nitrogen valve is arranged on the nitrogen pipeline, and the first blind plate is detachably installed on one end of the nitrogen pipeline close to the cabinet;

[0038] Raising the piston assembly so that the piston bottom plate is separated from the cabinet bottom plate of the cabinet body to a preset height difference comprises:

[0039] Close the nitrogen valve and install the first blind plate at one end of the nitrogen pipeline close to the cabinet;

[0040] Air is injected into the cabinet body through an air blowing device to raise the piston assembly until the piston bottom plate is separated from the cabinet bottom plate of the cabinet body to the preset height difference.

[0041] The beneficial effect of the leakage treatment method of the support sleeve of the gas tank of the present invention is that when the support sleeve in the piston assembly is corroded and worn, it can be treated in the following manner, for example, the gas tank is first switched to the maintenance state. At this time, the mixed gas in the cabinet, such as the carbon monoxide content and the oxygen content, can be controlled by replacement to be lower than the corresponding gas preset values, thereby effectively reducing the risk of explosion in subsequent steps due to the carbon monoxide and oxygen contents exceeding their respective corresponding gas preset values, and accordingly eliminating the explosion hazard in advance; then the piston assembly is raised to separate the piston bottom plate from the cabinet bottom plate of the cabinet to a preset height difference, so that maintenance personnel can enter the area between the piston bottom plate and the cabinet bottom plate, thereby providing working space for subsequent steps; then the maintenance personnel can embed and install concrete dam support rods in each support sleeve in the space between the piston bottom plate and the cabinet bottom plate of the cabinet, and install multiple piston support rods at intervals below the piston bottom plate, and then lower the piston assembly so that the concrete dam support rods and the piston support rods fall to the cabinet bottom plate, so that the concrete dam and the piston can be respectively checked by the concrete dam support rods and the piston support rods. The bottom plate is used for support; then the concrete dam can be partially lifted up by the jacking device, so that the concrete dam support rods no longer bear the pressure of the concrete dam, thereby facilitating the removal of the concrete dam support rods from the inside of the support sleeve in the concrete dam. At this time, the concrete dam support rods will not interfere with the assembly of the liner in the support sleeve. Subsequently, the top and bottom ends of the liner are respectively sealed and connected with the flange of the support sleeve and the piston bottom plate to realize the fixed installation operation of the liner, so that the corrosion and damage of the support sleeve can be shielded from the inside of the support sleeve through the liner. In other words, The liner and the support sleeve can be equivalent to an undamaged support sleeve, thereby effectively solving the problem of gas leakage in the later normal working state of the gas holder, and then ensuring the gas storage operation of the gas holder, so as to complete the damage treatment operation of one support sleeve; then refer to the above steps to assemble other liners inside the support sleeves at other positions to realize the damage treatment operation of the support sleeves at other positions, and finally remove the concrete dam support rod and the piston support rod, so as to prepare for the subsequent gas holder to switch from the above maintenance state to the working state.

[0042] In a second aspect, the present invention provides a gas tank comprising a tank body and a piston assembly, wherein the piston assembly comprises a piston base plate, a concrete dam, a support sleeve and a liner, wherein the concrete dam is arranged on the piston base plate, the support sleeve is passed through the concrete dam, the liner is embedded in the support sleeve, and the top and bottom ends of the liner are respectively sealed and connected to the flange of the support sleeve and the piston base plate.

[0043] Since the gas cabinet adopts the above-mentioned method for handling leakage of the support sleeve of the gas cabinet, the gas cabinet at least has all the technical effects of the method for handling leakage of the support sleeve of the gas cabinet, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the cross-sectional structure of a gas tank in the prior art;

[0045] Figure 2 It is a partial structural diagram of a piston assembly in the prior art;

[0046] Figure 3 Schematic diagram of a flow chart of a method for handling leakage of a support sleeve of a gas cabinet according to an embodiment of the present invention;

[0047] Figure 4 This is one of the partial structural diagrams of the piston assembly in an embodiment of the present invention;

[0048] Figure 5 This is a second schematic diagram of the partial structure of the piston assembly in an embodiment of the present invention;

[0049] Figure 6 This is a structural diagram of nitrogen filling into a cabinet according to an embodiment of the present invention;

[0050] Figure 7 This is a structural diagram of air entering the cabinet according to an embodiment of the present invention;

[0051] Figure 8 This is a schematic structural diagram of the piston assembly when the gas cabinet is in operation according to an embodiment of the present invention;

[0052] Figure 9 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0053] Figure 10 for Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0054] Description of reference numerals:

[0055] 1-cabinet body; 11-cabinet bottom plate; 2-piston assembly; 21-piston bottom plate; 22-piston fence; 23-concrete dam; 24-support sleeve; 241-flange; 25-inner membrane; 26-liner; 27-fastener; 28-second blind plate; 29-piston corrugated plate; 3-T-type assembly; 31-T-type baffle; 311-T-type fence; 312-T-type corrugated plate; 32-outer membrane; 4-inlet pipe; 5-outlet pipe; 6-first vent pipe; 7-second vent pipe; 8-inlet valve; 9-outlet valve; 10-blowing device; 12-concrete dam support rod; 13-nitrogen pipeline. DETAILED DESCRIPTION

[0056] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0057] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the up position and the reverse direction of the Z-axis representing the down position. The X-axis in the accompanying drawings represents the horizontal direction and is designated as the left-right position, with the positive direction of the X-axis representing the right position and the reverse direction of the X-axis representing the left position. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0058] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0059] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0060] In related technologies, gas holders, such as two-stage rubber membrane sealed gas holders, are mainly used for the storage of converter gas in the steel and metallurgical industry, participate in the online operation of the gas pipeline network, and play a role in peak shaving and valley filling in the generation and utilization of converter gas.

[0061] Combine Figure 1 、 Figure 9 and Figure 10As shown, the gas tank mainly includes a cabinet body 1 and a piston assembly 2, a T-type assembly 3, an inner membrane 25 and an outer membrane 32 in the cabinet body 1. The T-type assembly 3 is located above the piston assembly 2. A first relief pipe 6 is also provided outside the side wall of the cabinet body 1. A first relief valve is provided on the first relief pipe 6. The piston assembly 2 mainly includes a piston bottom plate 21, a piston fence 22, a concrete dam 23, a support sleeve 24 and a piston corrugated plate 29. The support sleeve 24 is vertically penetrated through the concrete dam. 23, used to install the concrete dam support rod 12 inside during maintenance. The concrete dam 23 is installed in the piston fence 22, and the piston base plate 21 is installed at the bottom of the concrete dam 23. The piston corrugated plate 29 is located on the side of the piston fence 22 near the side wall of the cabinet 1. The T-shaped assembly 3 mainly includes a T-shaped baffle 31. The T-shaped baffle 31 is connected and sealed to the side wall of the cabinet 1 through an outer membrane 32, and the T-shaped baffle 31 is connected and sealed to the piston base plate 21 through an inner membrane 25. An air inlet is provided at the bottom end of the side wall of the cabinet 1.

[0062] The gas in the cabinet 1 is usually stored in the space between the bottom of the concrete dam 23 and the cabinet bottom plate 11 , inside the inner membrane 25 , and inside the outer membrane 32 .

[0063] Gas can enter the inner membrane 25 and the outer membrane 32 through the following paths: gas, such as coal gas, enters the space between the bottom of the concrete dam 23 and the cabinet bottom plate 11, and the support sleeve 24 from the air inlet of the cabinet 1, and then flows into the inner membrane 25 and the outer membrane 32 in the cabinet 1. The inner membrane 25 first bulges and is tightly attached to the piston corrugated plate 29 on the piston fence 22. As gas is added to the cabinet 1, when the gas pressure (coal gas pressure) is greater than the weight of the piston assembly 2, the gas pressure acts as a pressure regulator. Under the action of the piston, the inner membrane 25 rolls upward, and the piston base plate 21 and the piston fence 22 set on the piston base plate 21 rise synchronously with the inner membrane 25. At this time, the inner membrane 25 rolls toward the T-shaped baffle 31; as the gas pressure in the cabinet 1 continues to increase, the piston assembly 2 continues to move upward, and drives the T-shaped baffle 31 and the outer membrane 32 to rise. Then, when the T-shaped baffle 31 rises to a certain height, the T-shaped baffle 31 will touch the first relief valve on the first relief pipe 6 to discharge the gas in the cabinet 1 through the first relief pipe 6.

[0064] in, Figure 1 Before the gas enters the cabinet 1, the piston base plate 21 of the piston assembly 2 can be close to the cabinet bottom plate 11 of the cabinet 1. At this time, the piston assembly 2 and the T-type assembly 3 are close to the bottom of the cabinet 1 and are adjacent to the piston base plate 21 of the cabinet 1. Figure 1 When the T-shaped baffle 31 rises to approach the top limit position in the cabinet 1, the T-shaped baffle 31 will touch the first relief valve on the first relief pipe 6. At this time, the piston assembly 2 and the T-shaped assembly 3 are in the vicinity. Figure 1 Indicated by dotted line.

[0065] Combine Figure 2 As shown, the gas flows from the gas inlet of the cabinet 1 to the outer membrane 32 through the bottom of the concrete dam and enters the support sleeve 24. As the gas cabinet operates for a long time, the steel structure components in contact with the gas, such as the support sleeve 24, will be corroded and damaged (see Figure 2 As a result, the gas will flow upward from the corroded and damaged part of the support sleeve 24 through the gap in the concrete dam 23 and enter the space between the top of the piston assembly 2 and the top plate of the cabinet 1, causing gas leakage, thereby affecting the gas storage operation of the gas tank.

[0066] In response to the problems existing in the above-mentioned related technologies, this embodiment provides a method for handling leakage of a support sleeve of a gas cabinet.

[0067] like Figure 1 and Figure 9 As shown, an embodiment of the present invention provides a method for handling leakage of a support sleeve of a gas tank, wherein the gas tank includes a tank body 1 and a piston assembly 2, wherein the piston assembly 2 includes a piston base plate 21, a concrete dam 23, a support sleeve 24 and a liner 26, wherein the concrete dam 23 is arranged on the piston base plate 21, the support sleeve 24 is passed through the concrete dam 23, and the liner 26 is embedded in the support sleeve 24, and the top and bottom ends of the liner 26 are sealedly connected to the flange of the support sleeve 24 and the piston base plate 21, respectively.

[0068] Combine Figure 3 As shown, the leakage treatment method includes the following steps:

[0069] S1. When the gas cabinet is switched to the maintenance state, the carbon monoxide content and the oxygen content in the cabinet body 1 are controlled to be lower than the corresponding gas preset values ​​by replacement;

[0070] S2. Raise the piston assembly 2 so that the piston bottom plate 21 is separated from the cabinet bottom plate 11 of the cabinet body 1 to a preset height difference;

[0071] S3. Install a concrete dam support rod 12 in each support sleeve 24, install multiple piston support rods below the piston bottom plate 21, and lower the piston assembly 2 so that the concrete dam support rod 12 and the piston support rod fall to the cabinet bottom plate 11;

[0072] S4. Raise the concrete dam 23, remove the concrete dam support rod 12 from the concrete dam 23, assemble the liner 26 into the support sleeve 24, and make the top end of the liner 26 sealedly connected to the flange 241 of the support sleeve 24, and the bottom end of the liner 26 sealedly connected to the piston bottom plate 21.

[0073] Specifically, the preset gas values ​​refer to the carbon monoxide and oxygen levels within the cabinet 1 that, after the gas has been replaced, will not create an explosion risk during subsequent operations. The preset height difference refers to the distance or height between the piston base plate 21 and the cabinet base plate 11, after the piston assembly 2 is raised relative to the cabinet base plate 11, that satisfies the requirement that "maintenance personnel can successfully access the underside of the piston base plate 21, install the concrete dam support rod 12 on the support sleeve 24, and install the piston support rod below the piston base plate 21."

[0074] The above step S4 involves the step of installing the liner 26 in the support sleeve 24, specifically the step of installing the liner 26 in one of the support sleeves 24. The support sleeves 24 at different positions of the entire piston assembly 2 can all be assembled with the liner 26 by referring to the above step S4.

[0075] In this embodiment, when the support sleeve 24 in the piston assembly 2 is corroded and worn, it can be handled in the following manner. For example, the gas tank is first switched to the maintenance state. At this time, the mixed gas in the cabinet body 1, such as the carbon monoxide content and the oxygen content, can be controlled by replacement to be lower than the corresponding gas preset values, thereby effectively reducing the risk of explosion in subsequent steps due to the carbon monoxide and oxygen contents exceeding the respective corresponding gas preset values, and accordingly eliminating the explosion hazard in advance; then the piston assembly 2 is raised to separate the piston bottom plate 21 from the cabinet bottom plate 11 of the cabinet body 1 to a preset height difference, so as to facilitate the entry of maintenance personnel. The area between the piston bottom plate 21 and the cabinet bottom plate 11 provides an operating space for subsequent steps; then the maintenance personnel can embed and install the concrete dam support rod 12 in each support sleeve 24 in the space between the piston bottom plate 21 and the cabinet bottom plate 11 of the cabinet body 1, install multiple piston support rods at intervals below the piston bottom plate 21, and then lower the piston assembly 2 so that the concrete dam support rod 12 and the piston support rod fall to the cabinet bottom plate 11, so that the concrete dam 23 and the piston bottom plate 21 can be supported by the concrete dam support rod 12 and the piston support rod respectively; then the concrete dam 23 and the piston bottom plate 21 can be supported by the jacking device. The earth dam 23 is partially lifted up, so that the concrete dam support rod 12 no longer bears the pressure of the concrete dam 23, which helps to remove the concrete dam support rod 12 from the inside of the support sleeve 24 in the concrete dam 23. At this time, the concrete dam support rod 12 will not interfere with the assembly of the liner 26 in the support sleeve 24. Subsequently, the top and bottom ends of the liner 26 are sealed and connected to the flange 241 of the support sleeve 24 and the piston bottom plate 21 respectively to achieve the fixed installation operation of the liner 26, so that the corrosion and damage of the support sleeve 24 can be shielded from the inside of the support sleeve 24 through the liner 26. In other words, the liner The tube 26 and the support sleeve 24 can be equivalent to the undamaged support sleeve 24, thereby effectively solving the problem of gas leakage in the later gas holder under normal working conditions, and then ensuring the gas storage operation of the gas holder, so as to complete the damage treatment operation of one support sleeve 24; then refer to the above steps to assemble other said liners 26 inside the support sleeve 24 at other positions in the piston assembly to realize the damage treatment operation of the support sleeve 24 at other positions, and finally remove the said concrete dam support rod 12 and the said piston support rod, so as to prepare for the subsequent gas holder to switch from the above maintenance state to the working state.

[0076] Optionally, S4, raising the concrete dam 23, removing the support sleeve 24 and the concrete dam strut 12 from the concrete dam 23, assembling the liner 26 into the support sleeve 24, and sealingly connecting the top end of the liner 26 to the flange 241 of the support sleeve 24 and the bottom end of the liner 26 to the piston bottom plate 21 includes:

[0077] S41, installing a jacking device below the concrete dam 23 and around the concrete dam support rods 12 to lift the concrete dam 23 so that the concrete dam support rods 12 no longer bear the pressure of the concrete dam 23;

[0078] S42, removing the concrete dam support rod 12 in the concrete dam 23;

[0079] S43, embed the liner 26 inside the support sleeve 24; seal the top end of the liner 26 with the flange 241 of the support sleeve 24, and seal the bottom end of the liner 26 with the piston bottom plate 21;

[0080] S44, cutting the portion of the top end of the liner 26 that extends beyond the flange 241 of the support sleeve 24;

[0081] S45 , inserting the concrete dam support rod 12 into the liner 26 from top to bottom, and connecting the concrete dam support rod 12 to the flange 241 of the support sleeve 24 via fasteners 27 .

[0082] Specifically, in step S41, when a damaged support sleeve needs to be repaired, a jacking device can be installed below the concrete dam 23 where the support sleeve 24 is located. The jacking device can be set on one side of the concrete dam support rod 12. When the jacking device works, the concrete dam 23 where the support sleeve 24 is located is lifted up, so that the concrete dam support rod 12 at that location no longer bears the downward pressure of the concrete dam 23, thereby making it easier for maintenance personnel to remove the support sleeve 24 and the concrete dam support rod 12 on the side of the jacking device in subsequent steps. The jacking device is a device that can lift the concrete dam 23, for example, it can be a jack, an electric push rod, etc.

[0083] In step S42, since the concrete dam 23 is lifted up by the lifting device, the bottom of the concrete dam support rod 12 is away from the cabinet bottom plate. At this time, the concrete dam support rod 12 no longer bears the pressure of the concrete dam 23, so the corresponding concrete dam support rod 12 can be removed from the inside of the support sleeve of the concrete dam 23, thereby facilitating the installation of the liner 26 in the support sleeve 24 in the subsequent steps.

[0084] Combine Figure 4As shown, a flange 241 is provided on the outer edge of the top end of the support sleeve 24, and the support sleeve 24 and the flange 241 can be an integral structure; in step S43, the liner 26 is embedded in the interior of the support sleeve 24 to cover the damaged portion of the support sleeve 24 from the inner side of the support sleeve 24 through the liner 26; the top end of the liner 26 is sealedly connected to the flange 241 of the support sleeve 24, thereby achieving a fixed connection between the top end of the liner 26 and the top flange of the support sleeve 24; the bottom end of the liner 26 is sealedly connected to the piston bottom plate 21, and the bottom end of the liner 26 is welded and fixed to the bottom end of the support sleeve 24, which not only achieves a fixed connection between the bottom end of the liner 26 and the piston bottom plate 21, but also prevents gas from leaking upward from the gap between the liner 26 and the bottom end of the support sleeve 24 through the corrosion and damage of the support sleeve 24 and the internal gap of the concrete dam 23 to the top of the piston assembly 2.

[0085] A sleeve opening is provided on the piston bottom plate 21 , and the bottom end of the liner 26 can be sealed and connected to the sleeve opening of the piston bottom plate 21 by welding to achieve a fixed connection between the liner 26 and the piston bottom plate 21 .

[0086] In step S44, the portion of the top end of the liner 26 that extends beyond the flange of the support sleeve 24 is cut to avoid interference with the connection between the concrete dam support rod 12 and the support sleeve 24 in subsequent steps; wherein, the cut portion of the top end of the liner 26 can also be polished smooth with a polishing tool to facilitate a tighter connection between the concrete dam support rod 12 and the support sleeve 24 in subsequent steps.

[0087] S45. The concrete dam support rod 12 can be divided into two parts, one part is basically a disc structure, and the other part is basically a cylindrical structure. The concrete dam support rod 12 is passed through the liner 26 from top to bottom. Specifically, the disc structure of the concrete dam support rod 12 is connected to the flange 241 of the support sleeve 24 through a fastener 27, and the cylindrical structure of the concrete dam support rod 12 is coaxially passed through the interior of the liner 26. The bottom end of the concrete dam support rod 12 can be connected to the piston bottom plate, so that the concrete dam support rod 12 and the flange 241 of the support sleeve 24 are fixed in a manner, so as to facilitate the support of the concrete dam 23 with the liner 26 already installed in the support sleeve 24 by the concrete dam support rod 12, so as to complete the processing of the damaged support sleeve 24 there, thereby avoiding the sinking problem of the area where the liner has been installed when the liner is installed in the support sleeve at other positions in the subsequent steps.

[0088] Among them, the above steps S41 to S45 involve the steps of installing the liner 26 in the support sleeve 24, specifically the steps of installing the liner 26 in one of the support sleeves 24, and the piston assembly may include multiple concrete dams 23, and the multiple concrete dams 23 may be arranged basically in a ring shape around the central axis of the cabinet. At least one support sleeve may be set in each concrete dam 23. Therefore, the installation of the liner inside the support sleeve of the concrete dam 23 at other positions can refer to the above steps S41 to S45.

[0089] Optionally, S4, raising the concrete dam 23, removing the concrete dam support rod 12 from the concrete dam 23, assembling the liner 26 into the support sleeve 24, sealingly connecting the top end of the liner 26 to the flange 241 of the support sleeve 24, and sealingly connecting the bottom end of the liner 26 to the piston bottom plate 21, further comprises:

[0090] Before the liner 26 is embedded in the support sleeve 24 , the interior of the support sleeve 24 is cleaned.

[0091] It should be noted that by cleaning the inner wall of the support sleeve 24, the inner wall of the support sleeve 24 is made smooth to prevent the support sleeve 24 and the liner 26 inside it from being unable to be coaxial due to the unevenness of the inner wall of the support sleeve 24, thereby improving the accuracy and stability of the liner 26 installed in the support sleeve 24.

[0092] Optionally, after the concrete dam support rod 12 and the piston support rod are lowered to the cabinet bottom plate 11 , the inspection door provided on the side wall of the cabinet body 1 is opened to perform a safety inspection on the internal environment of the cabinet body 1 .

[0093] Specifically, an inspection door is provided on the side wall of the cabinet 1 so that maintenance personnel can enter the interior of the cabinet 1 after the concrete dam support rod 12 and the piston support rod are lowered to the cabinet bottom plate 11 to conduct a safety inspection of the internal environment of the cabinet 1 to determine whether the safety conditions for subsequent operations are met.

[0094] Optionally, S1, when the gas cabinet is switched to the maintenance state, controlling the carbon monoxide content and the oxygen content in the cabinet 1 to be lower than corresponding gas preset values ​​by replacement includes:

[0095] S11, stopping the operation of the gas holder to switch to the maintenance state;

[0096] S12, replacing coal gas with nitrogen to control the carbon monoxide content in the cabinet 1 to be lower than a first gas preset value;

[0097] S13. Replace nitrogen with air to control the oxygen content in the cabinet 1 to be lower than a second gas preset value.

[0098] Specifically, in step S11, the gas holder is stopped from operating, for example, the gas holder may be shut down, so as to switch the gas holder to a maintenance state.

[0099] In step S12, the coal gas is replaced by nitrogen. In other words, nitrogen is allowed to enter the cabinet 1 to discharge the original coal gas in the cabinet 1. At this time, the carbon monoxide content in the mixed gas in the cabinet 1 can be effectively reduced until the carbon monoxide content in the cabinet 1 is lower than the first gas preset value, thereby eliminating the risk of explosion and gas poisoning caused by the carbon monoxide content in the coal gas in the cabinet 1 exceeding the first gas preset value in subsequent operations.

[0100] In step S13, nitrogen is replaced by air, in other words, air is allowed to enter the cabinet 1 to discharge the nitrogen in the cabinet 1. At this time, the oxygen content in the mixed gas in the cabinet 1 can be effectively reduced until the oxygen content in the cabinet 1 is lower than the preset value of the second gas, thereby eliminating the risk of nitrogen asphyxiation caused by the oxygen content in the cabinet 1 exceeding the preset value of the second gas in subsequent operations.

[0101] Among them, the first gas preset value refers to the content of carbon monoxide in the mixed gas in the cabinet 1 that will not cause an explosion. For example, when the carbon monoxide content is lower than 24ppm, the nitrogen replacement gas is qualified, and in subsequent operations, there will be no explosion risk due to the carbon monoxide content being lower than 24ppm; the second gas preset value refers to the content of oxygen in the mixed gas in the cabinet 1 that will not cause carbon monoxide to explode. For example, when the oxygen content is greater than 19.5%, the nitrogen replacement gas is qualified.

[0102] Optionally, combined Figure 6 As shown, the gas cabinet further includes an air inlet pipeline 4, an air outlet pipeline 5, a nitrogen pipeline 13, a first bleed pipe 6 and a second bleed pipe 7. The first bleed pipe 6 is provided on the cabinet body 1. The air inlet pipeline 4 and the air outlet pipeline 5 are respectively connected to different second bleed pipes 7. The air inlet pipeline 4, the air outlet pipeline 5 and the nitrogen pipeline 13 are respectively connected to the cabinet body 1.

[0103] S12, replacing coal gas with nitrogen to control the carbon monoxide content in the cabinet 1 to be lower than a first gas preset value includes:

[0104] S121, opening the first discharge pipe 6 and the second discharge pipe 7;

[0105] S122, filling nitrogen into the cabinet 1 through the nitrogen pipeline 13, replacing the coal gas with the nitrogen, and discharging the coal gas from the first vent pipe 6 and the second vent pipe 7 through the gas outlet pipeline 5;

[0106] S123, closing the first vent pipe 6 and the second vent pipe 7, and raising the piston assembly 2 to allow the nitrogen in the cabinet 1 to be fully mixed with the residual gas;

[0107] S124. Open the first vent pipe 6 and the second vent pipe 7, and discharge the gas fully mixed with nitrogen and residual gas from the first vent pipe 6, and from the second vent pipe 7 through the gas outlet pipe 5, until the carbon monoxide content in the cabinet 1 is lower than the first gas preset value.

[0108] Specifically, the air inlet pipe 4 is the pipe for the gas to enter the cabinet 1, the air outlet pipe 5 is the pipe for the gas to be discharged from the cabinet 1, and the nitrogen pipe 13 is the pipe for the nitrogen to enter the cabinet 1. The first vent pipe 6 is set on the cabinet 1 (see Figure 1 As shown, a first relief pipe 6 can communicate with the outer membrane 32 in the T-shaped assembly 3, allowing nitrogen to replace the gas and discharge the gas within the cabinet 1 through the first relief pipe 6. There is at least one first relief pipe 6. There can be multiple second relief pipes 7. For example, at least one second relief pipe 7 can be provided on each of the inlet and outlet pipes 4 and 5. A first relief valve is provided on the first relief pipe 6, and a second relief valve is provided on the second relief pipe 7. An inlet valve 8 is provided on the inlet pipe 4, and an outlet valve 9 is provided on the outlet pipe 5.

[0109] In step S121, before nitrogen is charged into the cabinet 1, the first vent pipe 6 and the second vent pipe 7 are opened first. This is beneficial for increasing the number of vent pipes opened when nitrogen is later charged into the cabinet 1, thereby improving the gas discharge efficiency in the cabinet 1 under the action of nitrogen and the reliability of nitrogen replacement of gas. For example, the first vent pipe 6 can be opened by opening the first vent valve, and the second vent pipe 7 can be opened by opening the second vent valve.

[0110] In step S122, see Figure 6 As shown, one end of the nitrogen pipeline 13 is connected to the cabinet 1, and the other end of the nitrogen pipeline 13 can be connected to the nitrogen cabinet, so that the nitrogen in the nitrogen cabinet can enter the cabinet 1 through the nitrogen pipeline 13. In a manner of replacing the coal gas with nitrogen, a part of the original coal gas in the cabinet 1 is discharged from the first vent pipe 6 through the outer membrane 32, and the other part of the coal gas is discharged from the second vent pipe 7 through the gas outlet pipeline 5, thereby realizing the process of replacing the original coal gas in the cabinet 1 with nitrogen.

[0111] In step S123, after the coal gas is replaced by nitrogen in the above steps, the carbon monoxide content of the coal gas in the cabinet 1 may still be higher than the first gas preset value. Therefore, the first relief valve can be closed to close the first relief pipe 6, and the second relief valve can be closed to close the second relief pipe 7. The piston assembly 2 is then raised to fully mix the nitrogen in the cabinet 1 with the residual coal gas through compression, thereby providing conditions for better discharge of the residual coal gas in subsequent steps.

[0112] In step S124, the first vent pipe 6 and the second vent pipe 7 are then opened to discharge a portion of the nitrogen and residual gas fully mixed in the cabinet 1 directly from the first vent pipe 6 through the outer membrane 32, and the other portion is discharged from the second vent pipe 7 through the gas outlet pipe 5, so as to further ensure that the carbon monoxide content in the cabinet 1 is lower than the first gas preset value, and accordingly ensure the pass rate of the nitrogen gas replacement operation.

[0113] Among them, carbon monoxide sensors can be installed at the first vent pipe 6 and the second vent pipe 7 to detect the content of carbon monoxide discharged from the first vent pipe 6 and the second vent pipe 7 through the carbon monoxide sensor to determine whether it is lower than the first gas preset value. If the carbon monoxide content is lower than the first gas preset value, it is determined that the nitrogen gas replacement operation is qualified.

[0114] Optionally, S13, replacing nitrogen with air to control the oxygen content in the cabinet 1 to be lower than a second gas preset value includes:

[0115] S131, connecting the air blowing device 10 to the cabinet 1, and opening the first venting pipe 6 and the second venting pipe 7;

[0116] S132. Control the blower 10 to blow air into the cabinet 1, replace nitrogen with air, and discharge the nitrogen from the first vent pipe 6 and the second vent pipe 7 through the outlet pipe 5 until the oxygen content in the cabinet 1 is lower than the preset value of the second gas.

[0117] Specifically, in step S131, Figure 7 As shown, the blowing device 10, such as a blower, is connected to the cabinet 1, and then the first vent pipe 6 and the second vent pipe 7 are opened. This is beneficial for increasing the number of vent pipes opened when air enters the cabinet 1 later, so as to improve the discharge efficiency of nitrogen in the cabinet 1 and the reliability of air replacing nitrogen under the action of air; for example, the first vent valve can be opened to open the first vent pipe 6, and the second vent valve can be used to open the second vent pipe 7.

[0118] In step S132, the blower device 10 is then controlled to work, so as to allow the air outside the cabinet 1 to enter the interior of the cabinet 1 through the blower device 10, and to replace the coal gas with nitrogen. A part of the nitrogen in the previous step in the cabinet 1 is discharged from the first vent pipe 6 through the outer membrane 32 by using air, and the other part of the nitrogen is discharged from the second vent pipe 7 through the outlet pipe 5, until the oxygen content in the cabinet 1 is lower than the preset value of the second gas, thereby realizing the process of replacing the nitrogen in the cabinet 1 with air.

[0119] Among them, oxygen sensors can be further installed at the first vent pipe 6 and the second vent pipe 7 to detect the content of oxygen discharged from the first vent pipe 6 and the second vent pipe 7 to determine whether it is lower than the second gas preset value. If the oxygen content is lower than the second gas preset value, it is determined that the air replacement nitrogen operation is qualified.

[0120] Optionally, the gas cabinet further includes an air inlet valve 8 and an air outlet valve 9, wherein the air inlet valve 8 is provided on the air inlet pipeline 4, and the air outlet valve 9 is provided on the air outlet pipeline 5;

[0121] S11, stopping the operation of the gas holder to switch to the maintenance state includes:

[0122] The gas holder is stopped from operating, and the air inlet valve 8 and the air outlet valve 9 are closed, so that the gas holder is switched to the maintenance state.

[0123] Specifically, the gas holder is stopped from operating, and the air inlet valve 8 and the air outlet valve 9 are closed first, which not only switches the gas holder from the normal state to the maintenance state, but also prevents the gas from directly overflowing from the air outlet pipeline 5 in the early stage of nitrogen replacement of the gas.

[0124] Optionally, the gas cabinet further includes a nitrogen valve and a first blind plate, the nitrogen pipeline 13 is in communication with the cabinet 1, the nitrogen valve is provided on the nitrogen pipeline 13, and the first blind plate is detachably mounted on one end of the nitrogen pipeline 13 close to the cabinet 1;

[0125] S2, raising the piston assembly 2 so that the piston bottom plate 21 is separated from the cabinet bottom plate 11 of the cabinet body 1 to a preset height difference, includes:

[0126] S21, closing the nitrogen valve and installing the first blind plate at one end of the nitrogen pipeline 13 close to the cabinet;

[0127] S22 . Fill the cabinet 1 with air through the air blowing device 10 to raise the piston assembly 2 until the piston bottom plate 21 is separated from the cabinet bottom plate 11 of the cabinet 1 to a preset height difference.

[0128] Specifically, in step S21, after the air replaces the nitrogen and the nitrogen is qualified, it is necessary to close the nitrogen valve and install the first blind plate at the end of the nitrogen pipeline 13 close to the cabinet, wherein the first blind plate is located on the side of the nitrogen valve facing the cabinet 1, so that the nitrogen cabinet connected to the nitrogen pipeline 13 can be completely disconnected from the cabinet 1 through the first blind plate.

[0129] In step S22, the blowing device 10, such as a blower, is connected to the cabinet 1 through a pipeline, so that when the blowing device 10 is in working state, the air outside the cabinet 1 is sent into the interior of the cabinet 1, for example, into the endothelial membrane 25, thereby raising the piston assembly 2 until the piston bottom plate 21 is separated from the cabinet bottom plate 11 of the cabinet 1 to a preset height difference, to ensure that the piston bottom plate 21 is completely separated from the cabinet bottom plate 11, thereby helping maintenance personnel to enter the bottom of the piston assembly 2 to perform corresponding operations in subsequent steps.

[0130] Among them, in steps S41 to S45 in step S4, the installation of the liner 26 in the support sleeve 24 can be completed, specifically the step of installing the liner 26 in one of the support sleeves 24. Subsequently, referring to steps S41 to S45, the liner 26 can be assembled inside the support sleeves 24 at other positions, thereby achieving the processing operation of assembling the liner 26 inside all the support sleeves 24 respectively; then, the piston assembly 2 can be raised to a certain height by filling air into the cabinet 1 through the air blowing device 10, so as to facilitate maintenance personnel to enter the area between the piston bottom plate 21 and the cabinet bottom plate 11, remove the concrete dam support rod 12 in each liner 26, and remove the piston support rod under the piston bottom plate 21; combined with Figure 8 As shown, the piston assembly 2 further includes a second blind plate 28, which is mounted above the support sleeve 24 and can be fixedly connected to the flange 241 of the support sleeve 24 via a fastener 27 (combined with Figure 8 As shown in FIG, the liner 26 is sealed from above through the second blind plate 28 to prevent gas from leaking from the top of the liner 26 to above the piston assembly 2 in subsequent working conditions, thereby completing the maintenance work of the internal installation liner 26 of all the support sleeves 24 in the gas tank.

[0131] After the above leakage treatment operation is completed, the gas tank can be restored to the working state from the above maintenance state by referring to the following method. For example, after the above maintenance operation is completed, the maintenance personnel inspect and accept the above maintenance operation; after the acceptance is qualified, the maintenance personnel withdraw from the cabinet 1 and close the maintenance door on the side wall panel of the cabinet 1; then open the first vent pipe 6 on the cabinet 1 to allow the piston assembly 2 to drop to the cabinet bottom plate 11; then open the air inlet pipe 4 and the air outlet pipe 5, and replace the air with nitrogen, for example, fill the cabinet 1 with nitrogen through a nitrogen cabinet to replace the above steps. Part of the air in the cabinet 1 is discharged from the first vent pipe 6, and the other part is discharged from the second vent pipe 7 through the outlet pipe 5. At this time, the oxygen content in the cabinet 1 is detected. If the oxygen content in the cabinet 1 is lower than 1%, it is judged that the nitrogen replacement of air is qualified; finally, the nitrogen is replaced by gas. For example, the gas enters the interior of the cabinet 1 through the air inlet pipe 4 to discharge the nitrogen in the cabinet 1 from the first vent pipe 6 and the second vent pipe 7. At this time, an explosion test can be performed on the cabinet 1. If the gas can be ignited, it is judged that the gas replacement of nitrogen is qualified, thereby completing the above-mentioned preliminary preparations for the gas cabinet to be put into operation.

[0132] Another embodiment of the present invention provides a gas cabinet, which can be obtained by adopting the leakage treatment method of the support sleeve of the above-mentioned gas cabinet, including a cabinet body 1 and a piston assembly 2, the piston assembly 2 including a piston base plate 21, a concrete dam 23, a support sleeve 24 and a liner 26, the concrete dam 23 is arranged on the piston base plate 21, the support sleeve 24 is passed through the concrete dam 23, the liner 26 is embedded in the support sleeve 24, and the top and bottom ends of the liner 26 are respectively sealed and connected to the flange of the support sleeve 24 and the piston base plate 21.

[0133] Specifically, combined Figure 5 and Figure 9 As shown, the gas tank further includes an inner membrane 25 and an outer membrane 32, and the piston assembly 2 further includes a piston fence 22, a fastener 27, a second blind plate 28 and a piston corrugated plate 29, wherein the concrete dam 23 is installed inside the piston fence 22, and the support sleeve 24 is vertically penetrated through the concrete dam 23 (see Figure 5 As shown), the liner 26 is provided inside the support sleeve 24, and the two are coaxially arranged. The bottom end of the liner 26 and the bottom end of the support sleeve 24 are sealed with the sleeve opening of the piston bottom plate 21. A second blind plate 28 is provided on the top end of the support sleeve 24. At this time, the second blind plate 28 can be fixedly connected to the flange of the support sleeve 24 by a fastener 27 (see Figure 8 As shown), the top of the liner 26 is sealed by the second blind plate 28 to prevent the gas from leaking from the top of the liner 26 to the top of the piston assembly 2 when the gas cabinet is in operation; the endothelial membrane 25 is located between the piston fence 22 and the side wall of the cabinet body 1.

[0134] The gas tank also includes a T-type assembly 3, which mainly includes a T-type baffle 31. The T-type baffle 31 includes a T-type fence 311 and a T-type corrugated plate 312. The T-type assembly 3 is arranged above the piston assembly 2, and the T-type corrugated plate 312 is arranged on the side of the T-type fence 311 facing the side wall of the cabinet 1. The T-type baffle 31 and the side wall of the cabinet 1 are connected and sealed by an outer membrane 32 (see Figure 10 As shown), the T-shaped baffle 31 and the piston bottom plate 21 are connected and sealed by the endothelial membrane 25.

[0135] The beneficial effects of the gas cabinet of this embodiment compared to the prior art are the same as the above-mentioned method for handling leakage of the support sleeve of the gas cabinet, and will not be repeated here.

[0136] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A method for handling leakage of a gas cabinet support sleeve, characterized in that: The gas tank comprises a tank body (1) and a piston assembly (2), wherein the piston assembly (2) comprises a piston bottom plate (21), a concrete dam (23), a support sleeve (24) and a liner (26), wherein the concrete dam (23) is arranged on the piston bottom plate (21), the support sleeve (24) is passed through the concrete dam (23), the liner (26) is embedded in the support sleeve (24), and the top and bottom ends of the liner (26) are respectively corresponding to the flange (241) of the support sleeve (24) and the piston bottom plate (21) and are sealed and connected; The leakage treatment method comprises the following steps: When the gas cabinet is switched to the maintenance state, the carbon monoxide content and the oxygen content in the cabinet (1) are controlled to be lower than the corresponding gas preset values ​​respectively by replacement; Raising the piston assembly (2) so that the piston bottom plate (21) is separated from the cabinet bottom plate (11) of the cabinet body (1) to a preset height difference; A concrete dam support rod (12) is installed in each supporting sleeve (24), and a plurality of piston support rods are installed below the piston bottom plate (21), and the piston assembly (2) is lowered so that the concrete dam support rod (12) and the piston support rod fall to the cabinet bottom plate (11); The concrete dam (23) is raised, the concrete dam support rod (12) is removed from the concrete dam (23), the liner (26) is assembled in the support sleeve (24), the top end of the liner (26) is sealedly connected to the flange (241) of the support sleeve (24), and the bottom end of the liner (26) is sealedly connected to the piston bottom plate (21), including: when a damaged support sleeve (24) needs to be processed, a jacking device is installed below the concrete dam (23) and around the concrete dam support rod (12) to lift the concrete dam (23) so that the concrete dam support rod (12) no longer bears the pressure of the concrete dam ( 23); remove the concrete dam support rod (12) in the concrete dam (23); embed the liner (26) in the interior of the support sleeve (24); seal the top end of the liner (26) with the flange (241) of the support sleeve (24), and seal the bottom end of the liner (26) with the piston bottom plate (21); cut the portion of the top end of the liner (26) that exceeds the flange (241) of the support sleeve (24); insert the concrete dam support rod (12) into the liner (26) from top to bottom, and connect the concrete dam support rod (12) to the flange (241) of the support sleeve (24) through a fastener (27).

2. The method for handling leakage of a gas tank support sleeve according to claim 1, characterized in that: The method of raising the concrete dam (23), removing the concrete dam support rod (12) from the concrete dam (23), assembling the liner (26) into the support sleeve (24), sealingly connecting the top end of the liner (26) to the flange (241) of the support sleeve (24), and sealingly connecting the bottom end of the liner (26) to the piston bottom plate (21) further comprises: Before the liner (26) is embedded in the interior of the support sleeve (24), the interior of the support sleeve (24) is cleaned.

3. The method for handling leakage of a gas tank support sleeve according to claim 1, characterized in that: After the concrete dam support rod (12) and the piston support rod are lowered to the cabinet bottom plate (11), the inspection door provided on the side wall of the cabinet body (1) is opened to perform a safety inspection on the internal environment of the cabinet body (1).

4. The method for handling leakage of a gas tank support sleeve according to claim 1, characterized in that: When the gas cabinet is switched to the maintenance state, controlling the carbon monoxide content and the oxygen content in the cabinet (1) to be lower than the corresponding gas preset values ​​by replacement means includes: Stopping the gas tank from operating to switch it to the maintenance state; By replacing coal gas with nitrogen, the carbon monoxide content in the cabinet (1) is controlled to be lower than a first gas preset value; By replacing nitrogen with air, the oxygen content in the cabinet (1) is controlled to be lower than a second gas preset value.

5. The method for handling leakage of a gas tank support sleeve according to claim 4, characterized in that: The gas cabinet further comprises an air inlet pipe (4), an air outlet pipe (5), a nitrogen pipe (13), a first vent pipe (6) and a second vent pipe (7), wherein the first vent pipe (6) is arranged on the cabinet body (1), the air inlet pipe (4) and the air outlet pipe (5) are respectively connected to different second vent pipes (7), and the air inlet pipe (4), the air outlet pipe (5) and the nitrogen pipe (13) are respectively connected to the cabinet body (1); The method of replacing coal gas with nitrogen to control the carbon monoxide content in the cabinet (1) to be lower than a first gas preset value includes: Opening the first discharge pipe (6) and the second discharge pipe (7); Filling the cabinet (1) with nitrogen through the nitrogen pipeline (13), displacing the coal gas with the nitrogen, and discharging the coal gas from the first vent pipe (6) and from the second vent pipe (7) through the gas outlet pipeline (5); The first vent pipe (6) and the second vent pipe (7) are closed, and the piston assembly (2) is raised to allow the nitrogen in the cabinet (1) to be fully mixed with the residual gas; The first vent pipe (6) and the second vent pipe (7) are opened, and the gas fully mixed with nitrogen and residual coal gas is discharged from the first vent pipe (6), and discharged from the second vent pipe (7) through the gas outlet pipeline (5), until the carbon monoxide content in the cabinet (1) is lower than the first gas preset value.

6. The method for handling leakage of a gas cabinet support sleeve according to claim 5, characterized in that: Controlling the oxygen content in the cabinet (1) to be lower than a second gas preset value by replacing nitrogen with air comprises: Connect the air blowing device (10) to the cabinet (1), and open the first venting pipe (6) and the second venting pipe (7); The blower device (10) is controlled to operate, and air is blown into the cabinet (1). The air replaces the nitrogen, and the nitrogen is discharged from the first vent pipe (6) and the second vent pipe (7) through the outlet pipe (5) until the oxygen content in the cabinet (1) is lower than the preset value of the second gas.

7. The method for handling leakage of a gas cabinet support sleeve according to claim 5, characterized in that: The gas cabinet further comprises an air inlet valve (8) and an air outlet valve (9), wherein the air inlet valve (8) is arranged on the air inlet pipeline (4), and the air outlet valve (9) is arranged on the air outlet pipeline (5); The step of stopping the gas holder to switch to the maintenance state includes: The gas holder is stopped from operating, and the air inlet valve (8) and the air outlet valve (9) are closed, so that the gas holder is switched to the maintenance state.

8. The method for handling leakage of a gas cabinet support sleeve according to claim 5, characterized in that: The gas cabinet further comprises a nitrogen valve and a first blind plate, the nitrogen pipeline (13) is in communication with the cabinet (1), the nitrogen valve is arranged on the nitrogen pipeline (13), and the first blind plate is detachably mounted on one end of the nitrogen pipeline (13) close to the cabinet (1); Raising the piston assembly (2) so that the piston bottom plate (21) is separated from the cabinet bottom plate (11) of the cabinet body (1) to a preset height difference comprises: Close the nitrogen valve and install the first blind plate at one end of the nitrogen pipeline (13) close to the cabinet; Air is injected into the cabinet (1) through an air blowing device (10) to raise the piston assembly (2) until the piston bottom plate (21) is separated from the cabinet bottom plate (11) of the cabinet (1) to the preset height difference.

9. A gas cabinet, adapted to use the method for treating leakage of a support sleeve of a gas cabinet according to any one of claims 1 to 8, characterized in that: The invention comprises a cabinet (1) and a piston assembly (2), wherein the piston assembly (2) comprises a piston bottom plate (21), a concrete dam (23), a support sleeve (24) and a liner (26), wherein the concrete dam (23) is arranged on the piston bottom plate (21), the support sleeve (24) is passed through the concrete dam (23), the liner (26) is embedded in the support sleeve (24), and the top and bottom ends of the liner (26) are respectively corresponding to the flange (241) of the support sleeve (24) and the piston bottom plate (21) and are sealed and connected.

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