Anti-theft gas meter connector and use method thereof

Abstract

The present invention provides an anti-theft gas meter connector and a method for using the same, wherein the anti-theft gas meter connector includes a meter body connector and a tube body connector, which are respectively used to seal and connect the gas meter and the bellows, and a sealed connection is formed between the two; it also includes an anti-theft cap, which is limited on the meter body connector and can rotate relative to the meter body connector, and a first placement groove is provided on the outer step surface of the meter body connector, and a second placement groove is provided on the inner step surface of the anti-theft cap; it also includes a magnetic block movably placed in the first placement groove, and rotating the anti-theft cap can drive the tube body connector to rotate. The present invention overcomes the shortcomings of existing anti-disassembly pipe connectors that the connector must be physically destroyed before it can be removed when it needs to be disassembled. It can prevent the connector from being disassembled at will when the gas meter is working, and can remove the connector using tools without damaging the parts when parts need to be replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of meter joints, and more particularly to an anti-theft gas meter joint and a use method thereof. Background Art

[0002] When natural gas is actually used, the bellows is generally connected to the gas meter through the gas meter joint. At present, the conventional gas meter joint consists of a connecting pipe, a connecting nut and a sealing gasket. The connecting pipe is screwed and connected to the gas meter through the internal thread of the connecting nut. The gas meter joint of this structure can be disassembled at will with a universal wrench, so it can only play a single connection role and cannot play an anti-theft role, which often causes gas leakage and gas theft, causing losses to gas supply companies.

[0003] Anti-disassembly gas meter connectors have appeared in the prior art. For example, a Chinese patent document discloses an anti-disassembly gas meter connector. When the connecting pipe is tightened on the gas meter through the nut, the outer sleeve is rotated, and the inner sleeve can be driven to be tightened on the gas meter through the elastic steel sheet. When the outer sleeve is rotated in the opposite direction, the elastic steel sheet will be deformed and slide out of the inclined groove on the outer sleeve, so that the inner sleeve cannot be driven to rotate. In other words, by rotating the nut outer sleeve on the anti-disassembly gas meter connector of the present invention, only the connecting pipe can be tightened on the gas meter, but the connecting pipe cannot be unscrewed from the gas meter. For example, a Chinese patent document discloses a patent for an anti-theft and anti-disassembly gas meter corrugated pipe connector, in which wedge-shaped groove structures are evenly distributed on the joint end faces of the outer shell and the nut sleeve, and a rolling structure is formed between the end face of the connecting pipe and the end face of the nut sleeve. The connector can only be tightened in one direction during installation and cannot be loosened. In other words, it cannot be freely disassembled except for destructive disassembly after installation.

[0004] The existing anti-disassembly gas meter joints all have the same problem, that is, when the joint needs to be removed, the outer shell must first be crushed and the joint must be physically destroyed before the joint can be removed. Therefore, the entire joint cannot be reused, and actual use is often a one-time connection, which invisibly increases the cost of use. Summary of the invention

[0005] The purpose of the present invention is to overcome the disadvantage that the existing anti-disassembly pipe joint must be physically destroyed before the joint can be removed when it is needed to be disassembled, and to provide an anti-theft gas meter joint and a method of using the same. The present invention can prevent the joint from being disassembled at will when the gas meter is working, and can also remove the joint using tools without damaging the parts when parts need to be replaced.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An anti-theft gas meter connector comprises a meter body connector having one end for sealingly connecting to a gas meter, and a tube body connector inserted at the other end of the meter body connector and used for sealingly connecting to a corrugated pipe, wherein a sealed connection is formed between the meter body connector and the tube body connector; the connector also comprises an anti-theft cap sleeved on the outer sides of the meter body connector and the tube body connector, the anti-theft cap is limited on the meter body connector and can rotate relative to the meter body connector, a first placement groove is provided on the outer step surface of the meter body connector, a second placement groove is provided on the inner step surface of the anti-theft cap, and the anti-theft cap can be rotated to make the notch positions of the first placement groove and the second placement groove relative to each other;

[0008] It also includes a magnetic block movably placed in the first placement groove, the depth of the first placement groove is greater than that of the second placement groove, the height of the magnetic block is greater than the depth of the second placement groove and less than the depth of the first placement groove; when the magnetic block is located in the second placement groove, rotating the anti-theft cap can drive the pipe body connector to rotate.

[0009] It should be noted that the outer side of the meter body connector is generally a hexagonal nut structure, which can be threadedly connected to the gas meter by using a universal hexagonal wrench. In the absence of an anti-theft cap, the gas meter connector can be disassembled at will by using a universal wrench, so the gas meter is often stolen and gas leaks occur. The present invention adds an anti-theft cap, and the anti-theft cap limit sleeve is arranged on the meter body connector. When the magnetic block is located in the first placement groove, the height of the magnetic block is smaller than the first placement groove, and the anti-theft cap can be rotated relative to the meter body connector. When the thief wants to disassemble it by rotating the anti-theft cap, the rotation cannot be applied to the internal pipe body connector, so the threaded connection between the meter body connector and the gas meter cannot be released. When the gas meter is damaged or the connected bellows needs to be replaced, the maintenance personnel can replace it through the external The magnet is placed on the outside of the anti-theft cap, and the magnetic block is adsorbed from the first placement groove to the second placement groove through the adsorption force of the magnet. Since the height of the magnetic block is greater than the second placement groove and smaller than the first placement groove, and the depth of the first placement groove is greater than the second placement groove, the magnetic block will be respectively clamped in the first placement groove and the second placement groove. When the anti-theft cap is rotated at this time, the anti-theft cap and the meter body connector are temporarily integrated through the clamping of the magnetic block. When the anti-theft cap is rotated, the meter body connector can be driven to rotate synchronously, so the meter body connector rotates relative to the gas meter until the meter body connector is disconnected from the gas meter, thereby realizing disassembly. In this way, the present invention can prevent the joint from being disassembled at will when the gas meter is working, and can also use tools to remove the joint without damaging the parts when parts need to be replaced, thereby greatly reducing the use cost.

[0010] It should also be noted that, since the threaded joint of the gas meter is generally at the top of the meter head, when the anti-theft gas meter joint of the present invention is connected to the gas meter, the anti-theft gas meter joint is installed vertically, and the first placement slot is a slot opening upward, and the magnetic block located therein naturally falls into the first placement slot, and only under the action of external magnetic force can the magnetic block be sucked into the second placement slot above; in addition, the meter body connector, tube body connector, anti-theft cap and other structures in the present invention are all made of non-magnetic materials, such as hard plastic or copper and other materials, so that during disassembly, the external magnet can accurately and stably adsorb the magnetic block, thereby realizing the position movement of the magnetic block in the first placement slot and the second placement slot.

[0011] Furthermore, the outer sides of the meter body connector and the anti-theft cap are both hexagonal nut structures that can be used with a hexagonal wrench. Setting the external anti-theft cap as a hexagonal nut structure can increase the difficulty of disassembly. After the external magnet is used to absorb the magnetic block, a universal wrench is used to directly act on the anti-theft cap to achieve torque transmission and release the threaded connection between the meter body connector and the gas meter.

[0012] Furthermore, an annular groove is provided on the inner wall of the anti-theft cap, and a limiting groove opposite to the position of the annular groove is provided on the outer wall of the watch body connecting head. A hole retaining ring is also provided in the annular groove and the limiting groove. When the hole retaining ring is not deformed, its inner and outer peripheries are respectively limited in the limiting groove and the annular groove. The hole retaining ring is used to limit the axial movement of the anti-theft cap relative to the watch body connecting head.

[0013] The present invention utilizes a hole retaining ring to relatively limit the anti-theft cap and the meter body connecting head. Since the hole retaining ring has a certain degree of telescopic elasticity, the hole retaining ring is sleeved on the outer periphery of the meter body connecting head. Under the action of the expansion elasticity, the hole retaining ring expands its inner diameter and is sleeved into the meter body connecting head until it slides and snaps into the limiting groove. After the anti-theft cap is inserted, the two clamp holes of the hole retaining ring can be clamped by a circlip pliers to make the hole retaining ring shrink in the limiting groove until the annular groove of the anti-theft cap snaps into the outer periphery of the hole retaining ring. After the circlip pliers are loosened, the inner and outer peripheries of the hole retaining ring are respectively limited in the limiting groove and the annular groove, thereby limiting the axial movement of the anti-theft cap relative to the meter body connecting head. In this way, after the meter body connecting head is connected to the gas meter, the anti-theft cap cannot be detached from the outside of the meter body connecting head by an axial pulling action, thereby achieving the protection of the internal meter body connecting head and the anti-theft effect.

[0014] Furthermore, a transition chamfer is provided at the corner of the outer step surface of the meter body connector. The transition chamfer is provided to facilitate better guidance of the hole retaining ring when it is inserted.

[0015] Furthermore, the number of the first placement grooves is at least two, and the first placement grooves are evenly distributed around the circumference of the watch body connector. Multiple first placement grooves are arranged in the circumference, and a magnetic block is arranged in each placement groove, so that after the external magnet simultaneously absorbs multiple magnetic blocks, multiple torque transmission points can be provided between the watch body connector and the anti-theft cap, thereby improving force transmission efficiency and rotation stability.

[0016] Furthermore, the magnetic pole directions of the magnetic blocks placed in each first placement slot are kept consistent. The magnetic pole directions of all the magnetic blocks are kept consistent to ensure that during the magnetic attraction process, the external magnet can absorb all the magnetic blocks without the same magnetic poles causing repulsion.

[0017] Furthermore, the magnetic block is a cylindrical magnet, and the first placement slot and the second placement slot are both cylindrical slots. The outer circumference of the cylindrical magnetic block is cylindrical without edges and corners, and it will not be easily damaged during the torque transmission process, thereby increasing the service life.

[0018] Furthermore, it also includes a first seal disposed in the inner cavity of the tube body connector, the first seal forms a sealed connection between the inner wall of the tube body connector and the bellows; it also includes a second seal disposed in the inner cavity of the meter body connector, the second seal forms a sealed connection between the meter body connector and the bellows; it also includes a third seal disposed at the connection between the meter body connector and the tube body connector, the third seal forms a sealed connection between the meter body connector and the tube body connector. Since the present invention connects the gas meter and the bellows for passing gas respectively, the sealing performance of the connection is also particularly important to prevent hidden dangers such as gas leakage. The present invention provides seals at the connection between each part to ensure multiple sealings and further ensure that there is no leakage at the joint connection.

[0019] Furthermore, the third sealing member is embedded between the outer wall of the tube body connector and the inner wall of the meter body connector, and corresponding embedding grooves are respectively provided on the outer wall of the tube body connector and the inner wall of the meter body connector.

[0020] Furthermore, the first sealing member is an F-type sealing ring embedded in the inner wall of the pipe body connector; the second sealing member is an L-type sealing ring with an inner step; and the third sealing member is an O-type sealing ring.

[0021] It should be noted that different types of sealing rings have different sealing effects. Since the first sealing member is located between the tube body connector and the bellows, the bellows has an outer layer and has a certain flexibility. The F-type sealing ring has two sealing lips, and the ends of the sealing lips have better adhesion and better sealing. At the end of the bellows, it is generally necessary to remove the outer layer with a length of three wave peaks for insertion. At this time, due to the ups and downs of the wave peaks on the outside of the bellows, it cannot be well sealed. The second sealing member is an L-shaped sealing ring with an inner step, so that the end of the bellows is inserted into the inner cavity of the second sealing member to achieve lateral sealing and end face sealing of the bellows, which can have a better sealing effect. Secondly, the inner and outer walls of the meter body connector and the tube body connector are mostly end-butted, so the use of O-type sealing ring has a better fitting effect and achieves better sealing.

[0022] Furthermore, it also includes a fourth sealing member arranged in the inner cavity of one end of the pipe body connector connected to the gas meter, and the fourth sealing member forms a seal between the pipe body connector and the gas meter. The fourth sealing member can be an annular gasket, and the annular gasket can better fit tightly between the end of the gas meter connection nut and the inner cavity end surface of the pipe body connector.

[0023] Furthermore, it also includes a clamping ring located in the inner cavity of the meter body connector and used to cover one of the wave crests of the corrugated tube. The clamping ring abuts against the end of the tube body connector and limits the axial movement of the corrugated tube relative to the tube body connector. The inner wall of the clamping ring is provided with a U-shaped ring groove for covering the wave crest of the corrugated tube. At the end of the corrugated tube, it is generally necessary to remove the outer layer of three wave crests for plugging. In order to prevent the corrugated tube from being detached from the tube body connector after being pulled out, a clamping ring that can clamp the wave crest of the corrugated tube is provided to limit the axial movement of the corrugated tube relative to the tube body connector, thereby improving the connection strength and anti-theft effect between the two.

[0024] Furthermore, the clamping ring is formed by splicing two semicircular arc clamping blocks. The clamping ring is generally made of copper metal, so it has no deformation performance, and the splicing form can be more conveniently installed on the crest of the corrugated pipe.

[0025] The present invention also provides a method for using an anti-theft gas meter connector, which specifically includes an installation method and a disassembly method:

[0026] The installation method specifically includes the following steps:

[0027] The anti-theft cap is placed on the outside of the bellows;

[0028] Insert the end of the corrugated pipe into the pipe body connector to form a sealed connection between the pipe body connector and the corrugated pipe;

[0029] Insert the pipe body connector into one end of the meter body connector to form a sealed connection between the meter body connector and the pipe body connector;

[0030] Connect the other end of the meter body connector to the gas meter thread, and form a sealed connection between the meter body connector and the gas meter;

[0031] Place a magnetic block in the first placement groove of the meter body connector, move the anti-theft cap and make it sleeve on the outside of the meter body connector and the pipe body connector, so that the anti-theft cap is limitedly connected to the pipe body connector, and the installation of the anti-theft gas meter corrugated pipe joint is completed; at this time, rotate the anti-theft cap, and the anti-theft cap rotates relative to the meter body connector and the pipe body connector;

[0032] The disassembly method specifically includes the following steps:

[0033] An external magnet is placed on the outside of the anti-theft cap, and the anti-theft cap is rotated until the first placement slot and the second placement slot are opposite to each other. The external magnet adsorbs the magnetic block into the second placement slot. Since the height of the magnetic block is greater than the second placement slot and smaller than the first placement slot, the magnetic block is respectively clamped in the first placement slot and the second placement slot. The anti-theft cap is continuously rotated. At this time, the anti-theft cap drives the pipe body connector to rotate relative to the gas meter until the pipe body connector is separated from the gas meter.

[0034] Remove the external magnet, release the limiting connection between the anti-theft cap and the pipe body connector, and remove the pipe body connector, meter body connector and anti-theft cap from the bellows in turn to complete the disassembly of the anti-theft gas meter bellows joint.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The present invention adds an anti-theft cap, and the anti-theft cap limiting sleeve is arranged on the meter body connecting head. When the magnetic block is located in the first placement groove, since the height of the magnetic block is smaller than the first placement groove, the anti-theft cap can be rotated relative to the meter body connecting head. When the thief wants to disassemble it by rotating the anti-theft cap, the rotation effect cannot be exerted on the internal pipe body connecting head, so the threaded connection between the meter body connecting head and the gas meter cannot be released. When the gas meter is damaged or the connected bellows needs to be replaced, the maintenance personnel can place the external magnet on the outside of the anti-theft cap, and absorb the magnetic block from the first placement groove to the second placement groove through the adsorption force of the magnet. Since the height of the magnetic block is larger than the second placement groove, the thief can not remove the anti-theft cap by rotating the anti-theft cap. The groove is smaller than the first placement groove, and the depth of the first placement groove is greater than that of the second placement groove, so the magnetic block will be respectively clamped in the first placement groove and the second placement groove. When the anti-theft cap is rotated at this time, the anti-theft cap and the meter body connector are temporarily integrated through the clamping of the magnetic block. When the anti-theft cap is rotated, the meter body connector can be driven to rotate synchronously. Therefore, the meter body connector rotates relative to the gas meter until the meter body connector is disconnected from the gas meter, thereby realizing disassembly. In this way, the present invention can prevent the joint from being disassembled at will when the gas meter is working, and can also use tools to remove the joint without damaging the parts when parts need to be replaced, thereby greatly reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a three-dimensional structural schematic diagram of the anti-theft gas meter connector in the present invention;

[0038] Figure 2 This is a schematic diagram of the internal structure of the anti-theft gas meter connector in the present invention;

[0039] Figure 3 It is an exploded view of the anti-theft gas meter joint of the present invention;

[0040] Figure 4 for Figure 2 A partial enlarged view of the middle A;

[0041] Figure 5 It is a schematic diagram of the internal structure of the meter body connector in the present invention;

[0042] Figure 6 A flowchart of the steps of installing the anti-theft gas meter connector of the present invention;

[0043] Figure 7 It is a schematic diagram of the installation process of the anti-theft cap in the present invention;

[0044] Figure 8 A flowchart of the steps of the disassembly process of the anti-theft gas meter connector in the present invention;

[0045] Fig. 9 It is a schematic diagram of the effect of the external magnet on the magnetic block during disassembly in the present invention.

[0046] The illustrations are as follows:

[0047] 1-body connector, 11-first placement groove, 13-transition chamfer, 2-tube connector, 3-anti-theft cap, 31-second placement groove, 32-annular groove, 4-magnetic block, 5-hole retaining ring, 6-first seal, 7-second seal, 8-third seal, 9-fourth seal, 10-clamping ring, 100-bellows. DETAILED DESCRIPTION

[0048] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0049] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0050] Example 1

[0051] like Figures 1 to 5 As shown, an anti-theft gas meter connector comprises a meter body connector 1 with one end used for sealing connection to a gas meter, and a tube body connector 2 inserted at the other end of the meter body connector 1 and used for sealing connection to a bellows 100, wherein a sealed connection is formed between the meter body connector 1 and the tube body connector 2; and an anti-theft cap 3 sleeved on the outer sides of the meter body connector 1 and the tube body connector 2, wherein the anti-theft cap 3 is limited on the meter body connector 1 and can rotate relative to the meter body connector 1, wherein a first placement groove 11 is provided on the outer step surface of the meter body connector 1, and a second placement groove 31 is provided on the inner step surface of the anti-theft cap 3, wherein the anti-theft cap 33 can be rotated to make the notch positions of the first placement groove 1111 and the second placement groove 31 relative to each other;

[0052] like Figure 4 As shown, it also includes a magnetic block 4 movably placed in the first placement groove 11, the depth of the first placement groove 11 is greater than the second placement groove 31, and the height of the magnetic block 4 is greater than the depth of the second placement groove 31 and less than the depth of the first placement groove 11; when the magnetic block 4 is located in the second placement groove 31, rotating the anti-theft cap 3 can drive the pipe body connector 2 to rotate.

[0053] In this embodiment, the outer side of the meter body connector 1 is a hexagonal nut structure, and the meter body connector 1 can be threadedly connected to the gas meter by using a universal hexagonal wrench.

[0054] In the present embodiment, since the threaded joint of the gas meter is at the top of the meter head, when the anti-theft gas meter joint of the present application is connected to the gas meter, the anti-theft gas meter joint is installed vertically, and the first placement groove 11 is a groove opening upward, and the magnetic block 4 located therein naturally falls into the first placement groove 11. Only under the action of external magnetic force can the magnetic block 4 be sucked into the second placement groove 31 above; in addition, the structures such as the meter body connector 1, the tube body connector 2 and the anti-theft cap 3 in the present invention are all made of non-magnetic materials, such as hard plastic or copper. In this way, during disassembly, the external magnet can accurately and stably adsorb the magnetic block 4, thereby realizing the position movement of the magnetic block 4 in the first placement groove 11 and the second placement groove 31.

[0055] like Figure 1 As shown, the outer sides of the meter body connector 1 and the anti-theft cap 3 are both hexagonal nut structures that can be used with a hexagonal wrench. The external anti-theft cap 3 is also set as a hexagonal nut structure, which can increase the difficulty of disassembly. After the magnetic block 4 is attracted by the external magnet, a universal wrench is used to directly act on the anti-theft cap 3 to achieve torque transmission, thereby releasing the threaded connection between the meter body connector 1 and the gas meter.

[0056] like Figure 5 As shown, the inner wall of the anti-theft cap 3 is provided with an annular groove 32, and the outer wall of the watch body connector 1 is provided with a limiting groove opposite to the annular groove 32. A hole retaining ring 5 is also provided in the annular groove 32 and the limiting groove. When the hole retaining ring 5 is not deformed, its inner and outer peripheries are respectively limited in the annular groove 32 and the limiting groove. The hole retaining ring 5 is used to limit the axial movement of the anti-theft cap 3 relative to the watch body connector 1.

[0057] The present application utilizes the hole retaining ring 5 to limit the relative position of the anti-theft cap 3 and the meter body connecting head 1. Since the hole retaining ring 5 has a certain telescopic elasticity, the hole retaining ring 5 is sleeved on the outer periphery of the meter body connecting head 1. Under the action of the expansion elasticity, the hole retaining ring 5 expands the inner diameter and is sleeved into the meter body connecting head 1 until it slides and is stuck in the limiting groove. After the anti-theft cap 3 is inserted, the two clamp holes of the hole retaining ring 5 can be clamped with a circlip pliers to make the hole retaining ring 5 shrink in the limiting groove until the annular groove 32 of the anti-theft cap 3 is stuck in the outer periphery of the hole retaining ring 5. After the circlip pliers are loosened, the inner and outer peripheries of the hole retaining ring 5 are respectively limited in the limiting groove and the annular groove 32, which can limit the axial movement of the anti-theft cap 3 relative to the meter body connecting head 1. In this way, after the meter body connecting head 1 is connected to the gas meter, the anti-theft cap 3 cannot be detached from the outside of the meter body connecting head 1 by axial pulling action, thereby protecting the internal meter body connecting head 1 and preventing theft.

[0058] In this embodiment, the limiting groove is an open ring groove on the outer periphery of the end of the meter body connector 1, so that a certain avoidance space can be formed between the anti-theft cap 3 and the meter body connector 1, so that during disassembly, the retaining ring pliers can extend from the avoidance space and tighten the two clamp holes of the retaining ring 5 for contraction operation, thereby facilitating the removal of the anti-theft cap 3.

[0059] like Figure 3 As shown, a transition chamfer 13 is provided at the corner of the outer step surface of the meter body connector 1. The transition chamfer 13 is provided to facilitate better guidance of the hole retaining ring 5 when it is inserted.

[0060] In this embodiment, there are four first placement grooves 11, and the four first placement grooves 11 are evenly distributed around the circumference of the watch body connector 1. Multiple first placement grooves 11 are arranged in the circumference, and a magnetic block 4 is arranged in each placement groove, so that after the external magnet simultaneously absorbs multiple magnetic blocks 4, multiple torque transmission points can be provided between the watch body connector 1 and the anti-theft cap 3, thereby improving the force transmission efficiency and rotation stability.

[0061] In this embodiment, the magnetic pole directions of the magnetic blocks 4 placed in each first placement slot 11 are kept consistent. The magnetic pole directions of all the magnetic blocks 4 are kept consistent to ensure that the external magnet can absorb all the magnetic blocks 4 during the magnetic attraction process without the same magnetic poles causing repulsion.

[0062] In this embodiment, the magnetic block 4 is a cylindrical magnet, and both the first placement slot 11 and the second placement slot 31 are cylindrical slots. The outer periphery of the cylindrical magnetic block 4 is cylindrical without edges and corners, and is not easily damaged during torque transmission, thereby increasing the service life.

[0063] The advantage of this embodiment is that in the absence of the anti-theft cap 3, the gas meter connector can be disassembled at will by a universal wrench, so the gas meter is often stolen and the gas leaks are a problem; the present application adds an anti-theft cap 3, and the anti-theft cap 3 is limited by a sleeve on the meter body connector 1. When the magnetic block 4 is located in the first placement groove 11, since the height of the magnetic block 4 is smaller than the first placement groove 11, the anti-theft cap 3 can be rotated relative to the meter body connector 1. When the thief wants to disassemble it by rotating the anti-theft cap 3, the rotation effect cannot be exerted on the internal pipe body connector 2, so the threaded connection between the meter body connector 1 and the gas meter cannot be released; when the gas meter is damaged or the connected bellows 100 needs to be replaced, the maintenance personnel can place an external magnet on the outside of the anti-theft cap 3, and remove the magnetic block 4 from the first placement groove through the adsorption force of the magnet. The first placement groove 11 is adsorbed into the second placement groove 31. Since the height of the magnetic block 4 is greater than the second placement groove 31 and smaller than the first placement groove 11, and the depth of the first placement groove 11 is greater than the second placement groove 31, the magnetic block 4 will be respectively clamped in the first placement groove 11 and the second placement groove 31. When the anti-theft cap 3 is rotated at this time, the anti-theft cap 3 and the meter body connector 1 are temporarily integrated through the clamping of the magnetic block 4. When the anti-theft cap 3 is rotated, the meter body connector 1 can be driven to rotate synchronously, so the meter body connector 1 rotates relative to the gas meter until the meter body connector 1 is disconnected from the gas meter, thereby realizing disassembly. In this way, the present invention can prevent the joint from being disassembled at will when the gas meter is working, and can also use tools to remove the joint without damaging the parts when parts need to be replaced, thereby greatly reducing the cost of use.

[0064] Example 2

[0065] This embodiment is similar to Embodiment 1, except that in this embodiment:

[0066] like Figure 2 and Figure 3 As shown, it also includes a first seal 6 arranged in the inner cavity of the tube body connector 2, and the first seal 6 forms a sealed connection between the inner wall of the tube body connector 2 and the corrugated tube 100; it also includes a second seal 7 arranged in the inner cavity of the meter body connector 1, and the second seal 7 forms a sealed connection between the meter body connector 1 and the corrugated tube 100; it also includes a third seal 8 arranged at the connection between the meter body connector 1 and the tube body connector 2, and the third seal 8 forms a sealed connection between the meter body connector 1 and the tube body connector 2.

[0067] like Figure 2 As shown, the third sealing member 8 is embedded between the outer wall of the tube body connector 2 and the inner wall of the meter body connector 1, and corresponding embedding grooves are respectively provided on the outer wall of the tube body connector 2 and the inner wall of the meter body connector 1.

[0068] like Figure 2As shown, the first sealing member 6 is an F-type sealing ring embedded in the inner wall of the pipe body connector 2; the second sealing member 7 is an L-type sealing ring with an inner step; and the third sealing member 8 is an O-type sealing ring.

[0069] It should be noted that different types of sealing rings have different sealing effects. Since the first sealing member 6 is located between the tube body connector 2 and the bellows 100, the bellows 100 has an outer layer and has a certain flexibility. The F-type sealing ring has two sealing lips, and the ends of the sealing lips have better adhesion and better sealing. At the end of the bellows 100, it is generally necessary to remove the outer layer with a length of three wave peaks for plugging. At this time, due to the ups and downs of the external wave peaks of the bellows 100, it cannot be well sealed. The second sealing member 7 is an L-shaped sealing ring with an inner step, so that the end of the bellows 100 is inserted into the inner cavity of the second sealing member 7 to achieve lateral sealing and end face sealing of the bellows 100, which can have a better sealing effect. Secondly, the inner and outer walls of the body connector 1 and the tube body connector 2 are mostly end-butted, so the use of an O-type sealing ring has a better fitting effect and achieves better sealing.

[0070] like Figure 2 As shown, it also includes a fourth sealing member 9 disposed in the inner cavity of one end of the pipe body connector 2 connected to the gas meter, and the fourth sealing member 9 forms a seal between the pipe body connector 2 and the gas meter. The fourth sealing member 9 can be an annular gasket, and the end of the gas meter connection nut and the inner cavity end surface of the pipe body connector 2 can better fit tightly.

[0071] The advantage of this embodiment is that: since the present application separately connects the gas meter and the bellows 100 for passing gas, the sealing performance of the connection is also particularly important to prevent hidden dangers such as gas leakage. The present application arranges seals at the connection between each part to provide multiple sealing guarantees, further ensuring that there is no leakage at the joint connection.

[0072] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0073] Example 3

[0074] This embodiment is similar to Embodiment 2, except that in this embodiment:

[0075] like Figure 2 and Figure 3As shown, it also includes a clamping ring 10 located in the inner cavity of the pipe body connector 2 and used to cover one of the wave crests of the corrugated pipe 100. The clamping ring 10 abuts against the end of the pipe body connector 2 and limits the axial movement of the corrugated pipe 100 relative to the pipe body connector 2. The inner wall of the clamping ring 10 is provided with a U-shaped annular groove for covering the wave crest of the corrugated pipe 100. At the end of the corrugated pipe 100, it is generally necessary to remove the outer layer of three wave crests for plugging. In order to prevent the corrugated pipe 100 from being detached from the pipe body connector 2 after being pulled out, a clamping ring 10 that can clamp the wave crest of the corrugated pipe 100 is provided to limit the axial movement of the corrugated pipe 100 relative to the pipe body connector 2, thereby improving the connection strength and anti-theft effect between the two.

[0076] like Figure 3 As shown, the clamp ring 10 is formed by splicing two semicircular arc clamping blocks. The clamp ring 10 is generally made of copper metal, so it has no deformation performance, and the splicing form can be more conveniently installed on the crest of the corrugated tube 100.

[0077] The other structures and principles of this embodiment are the same as those of Embodiment 2.

[0078] Example 4

[0079] like Figures 6 to 9 As shown, this embodiment provides a method for using an anti-theft gas meter connector, specifically including an installation method and a disassembly method:

[0080] like Figure 6 and Figure 7 As shown, the installation method specifically includes the following steps:

[0081] The anti-theft cap 3 is set on the outer side of the corrugated tube 100;

[0082] Insert the end of the corrugated tube 100 into the pipe body connector 2, and form a sealed connection between the pipe body connector 2 and the corrugated tube 100;

[0083] Insert the pipe body connector 2 into one end of the meter body connector 1, and form a sealed connection between the meter body connector 1 and the pipe body connector 2;

[0084] The other end of the meter body connector 1 is threadedly connected to the gas meter, and a sealed connection is formed between the meter body connector 1 and the gas meter;

[0085] Place the magnetic block 4 in the first placement groove 11 of the meter body connector 1, move the anti-theft cap 3 and make it sleeved on the outer sides of the meter body connector 1 and the tube body connector 2, so that the anti-theft cap 3 is limitedly connected to the tube body connector 2, and the installation of the anti-theft gas meter bellows 100 joint is completed; at this time, rotate the anti-theft cap 3, and the anti-theft cap 3 rotates relative to the meter body connector 1 and the tube body connector 2;

[0086] like Figure 8and Fig. 9 As shown, the disassembly method specifically includes the following steps:

[0087] An external magnet is placed on the outside of the anti-theft cap 3, and the anti-theft cap 3 is rotated until the first placement groove 11 and the second placement groove 31 are opposite to each other, and the external magnet adsorbs the magnetic block 4 into the second placement groove 31. Since the height of the magnetic block 4 is greater than the second placement groove 31 and smaller than the first placement groove 11, the magnetic block 4 is respectively clamped in the first placement groove 11 and the second placement groove 31, and the anti-theft cap 3 is continuously rotated. At this time, the anti-theft cap 3 drives the pipe body connector 2 to rotate relative to the gas meter until the pipe body connector 2 is separated from the gas meter.

[0088] Remove the external magnet, release the limiting connection between the anti-theft cap 3 and the pipe body connector 2, and remove the pipe body connector 2, the meter body connector 1 and the anti-theft cap 3 from the bellows 100 in sequence to complete the disassembly of the anti-theft gas meter bellows 100 joint.

[0089] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An anti-theft gas meter connector, comprising a meter body connector (1) having one end for sealingly connecting to a gas meter, and a pipe body connector (2) inserted at the other end of the meter body connector (1) and for sealingly connecting to a bellows (100), wherein a sealed connection is formed between the meter body connector (1) and the pipe body connector (2), characterized in that: It also comprises an anti-theft cap (3) sleeved on the outside of the meter body connector (1) and the tube body connector (2); the anti-theft cap (3) is limited on the meter body connector (1) and can rotate relative to the meter body connector (1); a first placement groove (11) is provided on the outer step surface of the meter body connector (1); a second placement groove (31) is provided on the inner step surface of the anti-theft cap (3); the anti-theft cap (3) can be rotated so that the notches of the first placement groove (11) and the second placement groove (31) are opposite to each other; It also includes a magnetic block (4) movably placed in the first placement groove (11), the depth of the first placement groove (11) is greater than the depth of the second placement groove (31), and the height of the magnetic block (4) is greater than the depth of the second placement groove (31) and less than the depth of the first placement groove (11); the inner side wall of the anti-theft cap (3) is provided with an annular groove (32), the outer side wall of the meter body connecting head (1) is provided with a limiting groove opposite to the position of the annular groove (32), and a hole retaining ring (5) is also provided in the annular groove (32) and the limiting groove. When the hole retaining ring (5) is not deformed, its inner and outer circumferences are respectively limited in the limiting groove and the annular groove (32), and the hole retaining ring (5) is used to limit the axial movement of the anti-theft cap (3) relative to the meter body connecting head (1); When the magnetic block (4) is located in the first placement groove (11), the anti-theft cap (3) can be rotated relative to the meter body connector (1), and the threaded connection between the meter body connector (1) and the gas meter cannot be released by rotating the anti-theft cap (3); an external magnet is placed on the outside of the anti-theft cap (3), and the magnetic block (4) is adsorbed from the first placement groove (11) to the second placement groove (31) by the adsorption force of the magnet. The magnetic block (4) is respectively engaged in the first placement groove (11) and the second placement groove (31). The anti-theft cap (3) and the meter body connector (1) are integrated by the engagement of the magnetic block (4). The anti-theft cap (3) can be driven to rotate synchronously with the meter body connector (1) by rotating the anti-theft cap (3), thereby realizing the separation of the anti-theft cap (3) and the meter body connector (1) from the gas meter.

2. The anti-theft gas meter connector according to claim 1, characterized in that: The outer sides of the meter body connecting head (1) and the anti-theft cap (3) are both hexagonal nut structures suitable for a hexagonal wrench.

3. The anti-theft gas meter connector according to claim 1, characterized in that: A transition chamfer (13) is provided at the corner of the outer step surface of the meter body connector (1).

4. The anti-theft gas meter connector according to claim 1, characterized in that: The number of the first placement grooves (11) is at least two, and the first placement grooves (11) are evenly distributed around the circumference of the meter body connector (1); the magnetic pole directions of the magnetic blocks (4) placed in each first placement groove (11) remain consistent.

5. The anti-theft gas meter connector according to claim 1, characterized in that: The device further comprises a first sealing member (6) arranged in the inner cavity of the tube body connector (2), the first sealing member (6) forming a sealed connection between the inner wall of the tube body connector (2) and the bellows (100); a second sealing member (7) arranged in the inner cavity of the meter body connector (1), the second sealing member (7) forming a sealed connection between the meter body connector (1) and the bellows (100); and a third sealing member (8) arranged at the connection between the meter body connector (1) and the tube body connector (2), the third sealing member (8) forming a sealed connection between the meter body connector (1) and the tube body connector (2).

6. The anti-theft gas meter connector according to claim 1, characterized in that: It also comprises a fourth sealing member (9) arranged in the inner cavity of one end of the meter body connection head (1) connected to the gas meter, the fourth sealing member (9) forming a seal between the meter body connection head (1) and the gas meter.

7. The anti-theft gas meter connector according to claim 1, characterized in that: It also comprises a clamping ring (10) located in the inner cavity of the meter body connector (1) and used to sleeve one of the wave crests of the corrugated tube (100); the clamping ring (10) abuts against the end of the tube body connector (2) and limits the axial movement of the corrugated tube (100) relative to the tube body connector (2); a U-shaped annular groove for covering the wave crest of the corrugated tube (100) is provided on the inner wall of the clamping ring (10).

8. The anti-theft gas meter connector according to claim 7, characterized in that: The clamping ring (10) is formed by splicing two semicircular arc clamping blocks.

9. A method for using an anti-theft gas meter connector, characterized in that: The specific installation and removal methods are as follows: The installation method specifically comprises the following steps: The anti-theft cap (3) is sleeved on the outer side of the bellows (100); Inserting the end of the bellows (100) into the pipe body connector (2), and forming a sealed connection between the pipe body connector (2) and the bellows (100); Inserting the pipe body connector (2) into one end of the meter body connector (1), so that a sealed connection is formed between the meter body connector (1) and the pipe body connector (2); The other end of the meter body connector (1) is threadedly connected to the gas meter, so that a sealed connection is formed between the meter body connector (1) and the gas meter; A magnetic block (4) is placed in the first placement groove (11) of the meter body connector (1), and the anti-theft cap (3) is moved and sleeved on the outer sides of the meter body connector (1) and the tube body connector (2), so that the anti-theft cap (3) is limitedly connected to the tube body connector (2), thereby completing the installation of the anti-theft gas meter bellows (100) joint; at this time, the anti-theft cap (3) is rotated so that the anti-theft cap (3) rotates relative to the meter body connector (1) and the tube body connector (2); The disassembly method specifically comprises the following steps: An external magnet is placed on the outside of the anti-theft cap (3), and the anti-theft cap (3) is rotated until the first placement groove (11) and the second placement groove (31) are opposite to each other, and the external magnet adsorbs the magnetic block (4) into the second placement groove (31). Since the height of the magnetic block (4) is greater than the second placement groove (31) and smaller than the first placement groove (11), the magnetic block (4) is respectively engaged in the first placement groove (11) and the second placement groove (31), and the anti-theft cap (3) is continuously rotated. At this time, the anti-theft cap (3) drives the pipe body connector (2) to rotate relative to the gas meter until the pipe body connector (2) is separated from the gas meter; The external magnet is removed to release the limiting connection between the anti-theft cap (3) and the pipe body connector (2), and the pipe body connector (2), the meter body connector (1) and the anti-theft cap (3) are removed from the bellows (100) in sequence, thereby completing the disassembly of the anti-theft gas meter bellows (100) joint.

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