Wiggins type dry rubber membrane sealing gas storage cabinet and installation and construction method

Abstract

The invention relates to the technical field of gas storage equipment, and discloses a Wiggins type dry rubber film sealing gas storage cabinet and an installation construction method.The Wiggins type dry rubber film sealing gas storage cabinet comprises a gas storage cabinet body, six sets of stand columns are arranged outside the gas storage cabinet body, channel steel is fixedly connected to the stand columns, and a baffle is fixedly connected to one end of the channel steel; the six sets of baffles are fixedly connected with the same outer ring beam, lifting lugs are fixedly connected to the positions, corresponding to the stand columns, of the outer ring beam, a platform is arranged on one sides of the stand columns, and angle steel is fixedly connected between the platform and the channel steel on the same side. A T-shaped fence upper platform is arranged on the other side of the stand column, a steel wire rope is fixedly connected between the T-shaped fence upper platform and the outer ring beam, and a chain block is arranged on the steel wire rope. Handrails are fixedly connected to the platform and the upper platform of the T-shaped fence. According to the gas storage cabinet, the problem that the risk is large when the gas storage cabinet is installed is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of gas storage equipment technology, and in particular to a Wiggins-type dry rubber membrane sealed gas storage tank and its installation and construction method. Background Technology

[0002] The Wiggins dry rubber membrane sealed gas holder (referred to as Wiggins holder) is a gas storage device that uses a rubber membrane to seal gas. It does not use liquid media, making it safe and environmentally friendly. Its maximum capacity can reach 140,000 cubic meters. The core of the device is to seal the gas by having the rubber membrane float up and down with the piston. It is particularly suitable for storing dry gas or gas containing dust.

[0003] While Wiggins-type dry rubber membrane sealed gas holders have many advantages, their total height can reach 50 meters, resulting in extensive high-altitude operations during construction and increasing safety risks. Therefore, we provide a Wiggins-type dry rubber membrane sealed gas holder and its installation construction method. Summary of the Invention

[0004] To address the significant installation risks associated with Wiggins-type dry rubber membrane sealed gas storage tanks mentioned above, this invention provides a Wiggins-type dry rubber membrane sealed gas storage tank and its installation method.

[0005] The present invention is achieved by the following technical solution: a Wiggins-type dry rubber membrane sealed gas storage tank, comprising a gas storage tank body, six sets of columns are provided on the outside of the gas storage tank body, channel steel is fixedly connected to the columns, a baffle is fixedly connected to one end of the channel steel, the same outer ring beam is fixedly connected to the six sets of baffles, lifting lugs are fixedly connected to the outer ring beam at the positions corresponding to the columns, a platform is provided on one side of the columns, and angle steel is fixedly connected between the platform and the channel steel on the same side.

[0006] As a further improvement to the above solution, a T-shaped fence platform is provided on the other side of the column, and a steel wire rope is fixedly connected between the T-shaped fence platform and the outer ring beam, with a chain hoist installed on the steel wire rope.

[0007] As a further improvement to the above solution, railings are fixedly connected to both the platform and the T-shaped fence platform.

[0008] An installation and construction method for a Wiggins-type dry rubber membrane sealed gas storage tank includes the following steps: S1. Basic acceptance and handover; S2. Prefabrication and inspection of main components; S3. Gas holder installation; S4. Gas holder welding; S5. Concrete pouring for the gas holder piston; S6. Gas holder airtightness test; S7. Overall commissioning of the gas holder.

[0009] As a further improvement to the above scheme, the foundation acceptance and handover includes the civil engineering providing the installation with inspection data on the geometric dimensions of the gas holder foundation and the foundation re-measurement. The inspection data on the geometric dimensions of the gas holder foundation provided by the civil engineering to the installation includes: the elevation of the main quality control points and the deviation between the center line of the column base foundation and the edge distance of the foundation, and the marking of the measurement points for the deviation between the foundation bolts and the center line of the column base. The foundation re-measurement includes re-measuring and determining the center cross line of the foundation and the center line of each column base with a theodolite, as well as re-measuring the geometric dimensions of the foundation.

[0010] As a further improvement to the above scheme, the prefabrication and inspection of the main components include the prefabrication and inspection of the side wall panels and the prefabrication and inspection of the columns.

[0011] As a further improvement to the above solution, the gas holder installation includes the installation of the gas holder base plate, the gas holder columns, the assembly and lifting of the gas holder top, the installation of the cabinet wall panels, the installation of the inclined ladder and the circular walkway, the installation of the wind-resistant ring, the installation of the gas holder piston, and the installation of the gas holder T-shaped enclosure.

[0012] As a further improvement to the above scheme, the gas holder welding adopts manual arc welding and carbon dioxide gas shielded welding.

[0013] As a further improvement to the above scheme, when the gas holder piston concrete is poured, the piston concrete dam is required to be filled with concrete with a height of 750 mm, the concrete filling concrete in the piston concrete dam has a specific gravity of 1280 kg / m3, and during the commissioning of the gas holder, a counterweight should be placed on the piston concrete dam according to the piston's operation to ensure the piston runs smoothly. In addition, 108 pre-poured concrete counterweights are required, each weighing about 17.6 kg, and after manufacturing, each one should be weighed and labeled.

[0014] As a further improvement to the above scheme, the overall commissioning of the gas holder includes a leveling device, horizontal adjustment, configuration of concrete blocks for piston pressure balancing, leak detection at the weld and flange joint and rubber diaphragm connection, vent valve, horizontal measurement of piston and T-baffle, measurement of sealing gap of piston and T-baffle, on-site capacity indicator and remote transmitter, radar level gauge and gas detector.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention allows for the simultaneous installation of inclined ladders and circular walkways while installing wall panels, which not only enhances the rigidity of the cabinet but also facilitates subsequent construction.

[0016] 2. The present invention facilitates the installation of the gas storage tank by setting up a platform and a platform on the T-shaped fence, and the setting up railings can improve the safety during construction, making it highly practical. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the welding operation platform structure on the outer side of the wall panel of the present invention; Figure 2 This is a schematic diagram of the welding operation platform structure on the inner side of the wall panel of the present invention; Figure 3 This is a schematic diagram of the connection structure between the column and the baffle of the present invention; Figure 4 This is a schematic diagram of the outer ring beam and the connecting structure of the lifting lugs of the present invention; Figure 5 This is a schematic diagram of the card-holding structure of the present invention; Figure 6 This is a schematic diagram of the gas holder installation process of the present invention.

[0018] Explanation of key symbols: 1. Gas storage tank body; 2. Column; 3. Channel steel; 4. Baffle; 5. Outer ring beam; 6. Lifting lug; 7. Platform; 8. Angle steel; 9. T-shaped fence platform; 10. Steel wire rope; 11. Chain hoist; 12. Railing. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0020] Please combine Figure 1-6 This embodiment of a Wiggins-type dry rubber membrane sealed gas storage tank includes a gas storage tank body 1. Six sets of columns 2 are provided on the outside of the gas storage tank body 1. Channel steel 3 is fixedly connected to the columns 2. A baffle 4 is fixedly connected to one end of the channel steel 3. The same outer ring beam 5 is fixedly connected to the six sets of baffles 4. Lifting lugs 6 are fixedly connected to the outer ring beam 5 at the positions corresponding to the columns 2. A platform 7 is provided on one side of the columns 2. An angle steel 8 is fixedly connected between the platform 7 and the channel steel 3 on the same side.

[0021] On the other side of the column 2, there is a T-shaped fence platform 9. The T-shaped fence platform 9 is fixedly connected to the outer ring beam 5 by a steel wire rope 10. A chain hoist 11 is installed on the steel wire rope 10.

[0022] An installation and construction method for a Wiggins-type dry rubber membrane sealed gas storage tank includes the following steps: S1. Basic acceptance and handover; S2. Prefabrication and inspection of main components; S3. Gas holder installation; S4. Gas holder welding; S5. Concrete pouring for the gas holder piston; S6. Gas holder airtightness test; S7. Overall commissioning of the gas holder.

[0023] The basic acceptance and handover includes the civil engineering providing the installation with inspection data on the geometric dimensions of the gas holder foundation and the re-measurement of the foundation. The inspection data on the geometric dimensions of the gas holder foundation provided by the civil engineering to the installation includes: the elevation of the main quality control points and the deviation between the center line of the column base foundation and the edge distance of the foundation, and the marking of the measurement points for the deviation between the foundation bolts and the center line of the column base. The re-measurement of the foundation includes re-measuring and determining the center cross line of the foundation and the center line of each column base with a theodolite, as well as re-measuring the geometric dimensions of the foundation.

[0024] (1) Elevation of key quality control points: 1. Elevation of the center of the 6 column bases; 2. Elevation at 6 points on the gas holder wall panel (D=12460); 3. The elevation of 6 points (evenly distributed) at the transition line between the arc surface and the plane; 4. Foundation center elevation.

[0025] (2) Deviation between the centerline of the column base and the edge distance of the foundation, and marking of the measurement points for the deviation between the foundation bolts and the centerline of the column base: 1. Basic center logo; 2. Basic ±0 markings; 3. Basic axis markings; 4. Six column base axis markings; Center markings for 5 and 6 column bases 6. Axis markings for each venting foundation; 7. Markings on the axes of each sewage discharge foundation; 8. Identification and data of settlement observation points for gas holder foundation.

[0026] Set up a theodolite at the base center, first remeasure and mark the center line of the reference axis, and then remeasure the other center lines.

[0027] Use a steel measuring tape and a tension gauge to inspect the following dimensions: column base center radius, wall panel radius, folded edge length, venting, elevation of the inclined ladder foundation, and centerline position. 1. The center location and depth of the sewage pit; 2. Re-measurement of foundation settlement observation points.

[0028] The basic geometric dimensions shall conform to the following specifications: 1. The allowable error at the wall panel installation location is ±10mm; the allowable error at adjacent measuring points at the column position and the center position between columns is ±5mm. 2. Concentric circles are drawn at 3m intervals along the top of the circle. A point is placed approximately every 3m on each circle. The allowable error is ±20mm. 3. The allowable error for the reserved hole is ±10mm.

[0029] The prefabrication and inspection of the main components include the prefabrication and inspection of the side wall panels and the prefabrication and inspection of column 2.

[0030] Prefabrication procedure for side wall panels: 1. Fabricate the wall panel frame according to the designed curvature; 2. Strengthen the bending and adjustment of angle steel; 3. Lay steel plates that meet the specifications of the wall panels on the jig, and fix the steel plates around the perimeter with pressure plates; 4. Mark the positions of the reinforcing angle steel and reinforcing plate on the steel plate, and install the reinforcing angle steel and reinforcing plate. Weld the reinforcing angle steel and reinforcing plate to the wall panel as required.

[0031] Side wall panel prefabrication requirements: The ellipticity of the angle steel bend is ≤5mm, and the chord length error of each angle steel is ≤2mm. The allowable deviation for the length and diagonal of the side panel is ±1mm; the width deviation is ±1mm; the allowable deviation for the pre-installed hole spacing is ≤1mm; and the flatness of the panel surface is ≤1mm within an area of ​​300×300 (mm2).

[0032] To facilitate installation and reduce the number of joints in column 2, column 2 is prefabricated to the full length, without being shortened as much as possible.

[0033] Prefabrication procedure for column 2: Rust removal and corrosion prevention → Layout → Welding of connecting plates → Straightening → Drilling The allowable deviation for the length of column 2 is ±1 mm; the deviation for the width is 0.5 mm; the deviation for the pre-installed hole spacing is ≤0.5 mm; the cumulative error for the spacing between any two pre-installed holes on column 2 is ≤0.5 mm; the flatness of the slide rail surface of column 2 is ≤2 mm; the wedge angle deviation on both sides of column 2 should be controlled within ±0.10; the width dimension of the slide rail should be controlled within the deviation value of 0 to -0.5 mm.

[0034] Gas holder installation includes gas holder base plate installation, gas holder column installation, gas holder top assembly and lifting, gas holder wall panel installation, inclined ladder and circular walkway installation, wind-resistant ring installation, gas holder piston installation, and gas holder T-shaped enclosure installation.

[0035] Gas holder base plate installation: After the anti-corrosion painting of the lower surface of the base plate is completed, the middle section of the base plate can be laid. A round hole is made at the center of the base plate to expose the center mark of the foundation for measurement and positioning.

[0036] 1. With the base plate coated with two layers of anti-corrosion paint facing down, begin laying the cabinet from the center. Do not spot weld between the plates during installation; secure all plates with assembly clamps. 2. After laying, the bottom panel of the cabinet is divided into four areas, A, B, C, and D, according to the cross center line. Then, four welders weld symmetrically according to the welding process requirements. Before welding each weld, the clamps are removed and tack welded, and the segmented back-welding method is used.

[0037] 3. After the four parts are welded, the four areas are joined together as a whole, that is, the center seam of the cross is welded together, and the reserved seam of the edge plate is not welded for the time being.

[0038] 4. After all the base plates are welded (except for the reserved parts), first grind away the spatter and burrs. After the appearance inspection is qualified, perform vacuum leak testing on the welds.

[0039] Gas holder support column 2 installation: (1) Installation of the first column 1. Install column base plates and use the grouting method to find the level and control the elevation.

[0040] 2. Mark the first column with a 1-meter elevation line, and mark the center line on both sides. Cut off the excess part of each column according to the elevation of each footboard.

[0041] 3. Hoist the columns into the column base plate, then adjust the accurate position and verticality of each column. Once it is appropriate, tension each column with three steel wires, spot weld the columns to the column base plate, and tighten the anchor bolts.

[0042] 4. Install and weld the columns and the reinforcing plates at the base of the columns. During the welding process, the verticality of the columns should be checked frequently. After all welding is completed, the verticality of the columns should be re-measured. After confirming that it is qualified, the secondary grouting of the base columns should be carried out.

[0043] (2) Installation of other columns 1. Lift the column vertically and align it with the base column. Use a theodolite to measure the radial and tangential perpendicularity of the column.

[0044] 2. After passing the inspection, use M24 bolts to connect and fix the plate, and weld the fillet weld between the connecting plate and the column.

[0045] 3. When installing the last column, weld a 1-meter-long I-beam or corresponding channel steel to the top and weld a connecting plate to the top to facilitate the hoisting of the upper circular walkway and the top arch beam.

[0046] Gas holder top assembly and lifting: (1) Cabinet top installation The gas holder top frame can be first assembled into several top trusses on a ground platform. Then, a crane is used to install four or eight mutually perpendicular trusses first, followed by the symmetrical hoisting of the remaining trusses. The outer ends of the top trusses are temporarily installed on the inner end faces of the first section of columns. Therefore, before assembling the top trusses, each section of columns should be supported and secured to ensure their verticality.

[0047] (2) Cabinet top lifting An external platform for the gas holder is constructed, which connects to the top of the gas holder to form an integrated internal and external structure. This platform can move up and down along the main column, creating a unified internal and external operating platform. Simultaneously, a self-made steel ladder is suspended around the outer edge of the internal roof for wall panel assembly and welding.

[0048] Cabinet wall panel installation: After each ring of wall panels is raised, a plumb line is hung at the center of the top arch beam to check the deviation between the center of the cabinet top and the center of the bottom plate, and to check the radial verticality of each column at the outer ring beam of the cabinet top. Any defects are corrected, and after all are satisfactory, the first ring of wall panels is installed. The top arch beam is then raised sequentially, the second ring of wall panels is installed, and so on. The following points should be noted when installing the wall panels: (1) Install the first wall panel. Start spot welding from column 1 in a clockwise direction. When installing the first ring of wall panels, reserve two symmetrical wall panels to facilitate the entry and exit of personnel and goods into the gas holder. (2) When welding the wall panel, weld the vertical joint between the wall panel and the column first, then weld the circumferential joint. The T-joint between the wall panel and the base plate should be welded after the wall panel is installed and welded. (3) Install and spot weld one wall panel at a time, and then weld the next wall panel. The wall panel below the sealing angle steel is a pressure-bearing part, and the sealing of the weld must be ensured. (4) The installation, welding, and corrosion protection of the wall panels involve a large amount of work at height. The structural characteristics of the gas holder can be used to create an auxiliary platform: the part below the platform on the T-rail inside the gas holder is welded by climbing the horizontal support of the T-rail; on the outside of the gas holder, a second-layer ring platform is prefabricated, and 6 channel steels are welded to the top arch beam, and 2 angle steels are welded to the channel steels to connect with the platform as a whole. This platform can be used as an installation platform for the wall panels. The installation of the gas holder top panel should proceed from the outer perimeter of the top panel towards the center. To ensure good light transmission during gas holder assembly, the outermost ring and center panel should be left uninstalled until the top panel is in place.

[0049] Installation of inclined ladders, circular walkways, and wind-resistant rings: Installing the inclined ladder and circular walkway at the same time as installing the wall panels can not only enhance the rigidity of the cabinet, but also facilitate subsequent construction.

[0050] Gas holder piston installation: (1) Piston base plate welding The piston base plate should be laid from the center outwards. After adjustment, tack welding and general welding between the plates can be carried out. The installation and welding methods are the same as those for the cabinet base plate.

[0051] Central temporary support installation First, assemble the central temporary support frame as a whole, then hoist it into the center position of the cabinet bottom for alignment and fixation. Next, suspend the central ring beam of the cabinet top steel structure onto the central support frame. Use a plumb line to ensure the concentricity of the ring beam, and use jacks to adjust its level and elevation. When determining the height of the ring beam, the camber of the cabinet top and trusses should be considered in advance; the height of the ring beam should ideally be 60-100mm higher than this design value.

[0052] (3) Piston bracket installation The piston brackets can be assembled piece by piece on a ground platform and transported to their corresponding positions inside the cabinet. Each bracket piece is then symmetrically hoisted into place in a mutually perpendicular cross direction. Following this, the remaining bracket pieces and connecting components are hoisted. Instruments are used to check the radial and tangential perpendicularity of the brackets, and the elevation is adjusted. After confirming accuracy, the mounting bolts are tightened, and finally, the welding of each connection point is performed symmetrically.

[0053] Gas holder T-fence installation: (1) T---Fence frame installation sequence: Support base plate → Support frame → Horizontal support → Diagonal brace → Welding → Platform plate (2) T---Fence installation The installation sequence of the T---fence components is as follows: Sealing connection plate → T-shaped fence bracket → Horizontal support → Diagonal brace → Walkway platform Sealed connectors → Ladder → Handrail → Upper and lower casters (3) Installation of sealing device The gas holder welding is carried out using manual electric arc welding and carbon dioxide gas shielded welding.

[0054] Welding power source: DC welding machine.

[0055] Welding material: J422 (E4303) welding rod.

[0056] Air tightness test of welds: The bottom plate, wall plates, and piston plates of the gas holder below the +5.00 elevation at the wall panel sealing point should be airtight. The lap welds of the bottom plate and piston plates of the gas holder should be tested by vacuum method, with a vacuum degree requirement of 8000Pa; The verticality tolerance of the cabinet should be less than H / 1000, the roundness tolerance should not exceed 10mm, and the radius deviation of the dome curvature should be less than 10mm. All parts of the cabinet should have a good appearance.

[0057] Main welding process quality requirements: 1. Butt welds of structural components such as gas holder columns, top frames, and reinforcing angle steel should be beveled and fully penetrated, and reinforced according to specifications.

[0058] 2. The gas holder bottom plate, wall plates, piston bottom plate, etc. are all medium and thin plate structures. In order to reduce welding deformation, except for the sealing weld which is a full weld, all the others are intermittent welds; the weld leg height should be less than or equal to the thickness of the thin plate; welds with a length of more than 1.5 meters should be welded in sections; the welding sequence should be symmetrical and the weldment should be in a free state as much as possible.

[0059] 3. All welds should be as regular in shape as possible, with smooth surfaces and free of surface porosity and slag inclusions.

[0060] When pouring concrete for the gas holder piston, the piston concrete dam must be filled with concrete to a height of 750 mm. The concrete filling density of the piston concrete dam must be 1280 kg / m3. During the commissioning of the gas holder, a counterweight should be placed on the piston concrete dam according to the piston's operation to ensure stable piston operation. 108 pre-poured concrete counterweights, each weighing approximately 17.6 kg, should be weighed and labeled after manufacturing.

[0061] Preparation for airtightness test: (1) The gas holder has been sealed, the welding work of the cabinet has been completed, and all installations related to airtightness have been completed.

[0062] (2) The site has been cleaned up and low-voltage lighting is used inside the cabinet, providing sufficient illumination.

[0063] (3) No open flame operations such as electric welding shall be carried out in the test site, especially in the rubber membrane sealing area.

[0064] (4) The test process is uniformly scheduled and commands are obeyed.

[0065] (5) Mark the elevation and mark the position line at the position of the column of the inner wall panel of the gas holder T-enclosure, as the ruler for the lifting and leveling test.

[0066] (6) The air source has been connected.

[0067] One high-pressure centrifugal fan or compressed air from the factory area.

[0068] Direct airtightness test Pressurize the piston by introducing air into its lower part. Stop pressurizing when the piston rises to approximately 3 meters in height. Apply soapy water to all welds and rubber diaphragm joints requiring a seal, and directly check for airtightness. If no bubbles are found, the tested area is considered to meet the airtightness requirements. If bubbles are found, handle the situation differently depending on the circumstances. For bolted connections, tighten the bolts directly until there is no leakage. For welded joints that leak, clearly mark the leak point, release the air, and then repair the weld.

[0069] The overall commissioning of the gas holder includes leveling device, horizontal adjustment, placement of concrete blocks for piston pressure balancing, leak detection at weld and flange joints and rubber diaphragm connections, vent valve, horizontal measurement of piston and T-baffle, measurement of sealing gap of piston and T-baffle, on-site capacity indicator and remote transmitter, radar level gauge and gas detector.

[0070] (1) Leveling device Objective: To confirm whether the leveling counterweight operates in a coordinated manner and whether each pulley system rotates smoothly. Confirmation Items: 1. Check if there is any jamming during the operation of the counterweight guide rail.

[0071] 2. Check if each pulley block is installed correctly.

[0072] 3. Check whether each wire rope, pulley block, and rotating bearing is greased.

[0073] 4. Check if the leveling wire rope is installed correctly.

[0074] Implementation guidelines: Judgment criteria for the movement of the piston and T-plate: coordinated movement of the counterweight.

[0075] (2) Horizontal adjustment Purpose: To protect the piston and T-plate from horizontal movement. Confirmation items: 1. Turn on the blower and check if air can be supplied.

[0076] 2. Check if there are any other foreign objects on the piston and T-plate.

[0077] 3. Whether the concrete blocks are equally divided.

[0078] Implementation guidelines: 1. Measure the tension of the leveling steel rope upon landing.

[0079] 2. Measure the steel ropes connected to the same counterweight separately, and adjust them evenly with screws. Repeat this measurement and adjustment for the entire group.

[0080] 3. Introduce air and perform a horizontal measurement after the piston floats up. When it is within the permissible range, extend the seal to its maximum extent to raise the piston. Then, lower the piston down to just before it hits the ground and perform a horizontal measurement immediately before it hits the ground. 4. If the piston is not level, move the concrete block to adjust the level as much as possible.

[0081] Judgment criterion: Piston levelness ±30mm.

[0082] Experimental equipment: steel tape measure, data sheet, pads, flashlight, and notebook.

[0083] (3) Configuration of concrete blocks for piston pressure balancing Objective: To confirm the concrete mix design. Confirmation item: Concrete blocks should be evenly distributed. Implementation guidelines: If the piston and T-baffle exceed the judgment standard, change the concrete configuration as needed. Furthermore, after the change, adjust the tension of the steel cable until it is uniform.

[0084] Judgment criteria: The level of the piston and T-plate should be within the judgment criteria.

[0085] (4) Leak detection at welds, flange joints, and rubber membrane connections. Objective: To investigate the sealing condition of welded joints, flange joints, and rubber membrane connections in the gas connection section.

[0086] Confirmation: Install the blower and confirm that it can supply air.

[0087] Implementation guidelines: 1. Inject air to bring the piston to a certain height.

[0088] 2. Apply soapy water to the sealing areas such as welds, flange joints, and rubber membrane connections to check for leaks.

[0089] Judgment criterion: No leakage when tested with soapy water. (5) Vent valve Objective: To confirm the working status and whether there is any leakage after shutdown.

[0090] Confirmation items: 1. Confirm that the setting of the relief valve drive steel rope is correct.

[0091] 2. Check whether the pins and bolts on the rod are installed correctly, and whether the rod (top rod) of the relief valve is working properly.

[0092] 3. Adjust the vent valve until it meets the requirements.

[0093] Implementation guidelines: 1. Make the piston and T-plate float up to full capacity, causing the relief valve rod to actuate.

[0094] 2. After closing the vent valve, check for leaks with soapy water.

[0095] 3. Confirm that the venting position of the venting valve stem on top of the T-baffle (the distance between the top of the side plate and the T-baffle) matches the drawing. If not, the venting valve stem can be adjusted in 60mm increments, so it should be adjusted to the appropriate position.

[0096] Judgment criteria: Flexible operation, no leakage after shutdown.

[0097] (6) Horizontal measurement of piston and T-plate Objective: To investigate whether the piston and T-plate can move horizontally up and down. Confirmation items: 1. The piston is level and properly adjusted.

[0098] 2. The rubber pads are properly adjusted.

[0099] Implementation guidelines: 1. After the piston floats up, measure the levelness. If there is no large error, raise the piston until the seal opens, and then lower it until it just touches the ground before measuring the levelness.

[0100] 2. After confirming that the levelness is within the allowable range, begin introducing air. Raise and lower the instrument according to the measuring chart, and perform measurements sequentially.

[0101] Judgment standard: ±30mm (7) Measurement of the sealing gap between the piston and the T-plate Objective: To investigate whether the piston and T-plate become eccentric during operation.

[0102] Confirmation Items 1. The piston levelness investigation is complete. 2. The rubber pad has been adjusted.

[0103] Implementation Guidelines After the piston floats up, the sealing gap is measured. Under normal circumstances, the piston will land once and the sealing gap will be measured again.

[0104] Judgment criteria: External seal 370±120mm; (8) Capacity field indicator and remote control transmitter Objective: To investigate the working status of the field indicator and remote transmitter (radar altimeter).

[0105] Confirmation Items Grease the drive cable and rotate the pulley. Zero-point adjustment upon landing is complete.

[0106] Implementation guidelines: 1. Implemented during the movement of the piston and T-plate.

[0107] 2. Confirm the reading of the on-site capacity indicator when the volume is full.

[0108] 3. The trial operation and adjustment of electrical equipment and installation equipment shall be referred to the following.

[0109] Judgment criteria: The movements should be flexible. (9) Radar level gauge After confirming the operation using analog input, conduct performance tests, adjustments, and confirm the E / C (Energy Center) display during the piston's trial run. First, adjust the 0-point when the capacity is 0m (piston on the ground), and adjust the scale range when the capacity reaches 100% (discharge begins). Next, confirm the intermediate position and make necessary adjustments. Furthermore, the transmitter and receiver should be adjusted to be perpendicular to the reflector.

[0110] (10) Gas detector During the piston's trial run, confirm whether the guide tube (the connecting tube between the detector on the piston and the roof) can be smoothly wound on the piston's winding device, and make adjustments as needed. Example

[0111] This embodiment is an improvement on embodiment 1, in that railings 12 are fixedly connected to both platform 7 and platform 9 of the T-fence, which can improve the safety during construction.

[0112] All components of this invention are general standard parts or parts known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. It is obvious to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description, and therefore all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0113] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A Wiggins-type dry rubber membrane sealed gas storage tank, characterized in that, The gas storage tank body (1) is provided with six sets of columns (2) on the outside of the gas storage tank body (1). Channel steel (3) is fixedly connected to the column (2). A baffle (4) is fixedly connected to one end of the channel steel (3). The same outer ring beam (5) is fixedly connected to the six sets of baffles (4). A lifting lug (6) is fixedly connected to the outer ring beam (5) at the position corresponding to the column (2). A platform (7) is provided on one side of the column (2). An angle steel (8) is fixedly connected between the platform (7) and the channel steel (3) on the same side.

2. The Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 1, characterized in that, A T-shaped fence platform (9) is provided on the other side of the column (2). A steel wire rope (10) is fixedly connected between the T-shaped fence platform (9) and the outer ring beam (5). A chain hoist (11) is provided on the steel wire rope (10).

3. A Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 2, characterized in that, Both the platform (7) and the platform (9) of the T-fence are fixedly connected with railings (12).

4. The installation and construction method of a Wiggins-type dry rubber membrane sealed gas storage tank as described in any one of claims 1-3, characterized in that, Includes the following steps: S1. Basic acceptance and handover; S2. Prefabrication and inspection of main components; S3. Gas holder installation; S4. Gas holder welding; S5. Concrete pouring for the gas holder piston; S6. Gas holder airtightness test; S7. Overall commissioning of the gas holder.

5. The installation and construction method of a Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 4, characterized in that, The foundation acceptance and handover includes the civil engineering providing the installation with inspection data on the geometric dimensions of the gas holder foundation and the foundation re-measurement. The inspection data on the geometric dimensions of the gas holder foundation provided by the civil engineering to the installation includes: the elevation of the main quality control points and the deviation between the center line of the column base foundation and the edge distance of the foundation, and the marking of the measurement points for the deviation between the foundation bolts and the center line of the column base. The foundation re-measurement includes re-measuring and determining the center cross line of the foundation and the center line of each column base with a theodolite, as well as re-measuring the geometric dimensions of the foundation.

6. The installation and construction method of a Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 5, characterized in that, The prefabrication and inspection of the main components include the prefabrication and inspection of the side wall panels and the prefabrication and inspection of the columns.

7. The installation and construction method of a Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 6, characterized in that, The gas holder installation includes the installation of the gas holder base plate, the gas holder columns, the assembly and lifting of the gas holder top, the installation of the cabinet wall panels, the inclined ladder and circular walkway, the installation of the wind-resistant ring, the installation of the gas holder piston, and the installation of the gas holder T-shaped enclosure.

8. The installation and construction method of a Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 7, characterized in that, The gas holder is welded using manual electric arc welding and carbon dioxide gas shielded welding.

9. The installation and construction method of a Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 8, characterized in that, When pouring the concrete for the gas holder piston, the piston dam should be filled with concrete to a height of 750 mm. The concrete filling density of the piston dam should be 1280 kg / m3. During the commissioning of the gas holder, a counterweight should be placed on the piston dam to ensure stable piston operation according to the piston's running condition. 108 pre-poured concrete counterweights should be used, each weighing approximately 17.6 kg. After manufacturing, each counterweight should be weighed and labeled.

10. The installation and construction method of a Wiggins-type dry rubber membrane sealed gas storage tank as described in claim 9, characterized in that, The overall commissioning of the gas holder includes leveling device, horizontal adjustment, configuration of concrete blocks for piston pressure balancing, leak detection at weld and flange joints and rubber membrane connections, venting valve, horizontal measurement of piston and T-baffle, measurement of sealing gap between piston and T-baffle, on-site capacity indicator and remote transmitter, radar level gauge and gas detector.

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