Pipeline connecting structure convenient to install and pipeline system

Abstract

The utility model relates to a pipeline connecting structure convenient to install and a pipeline system. The pipeline connecting structure comprises a first pipeline unit, a first limiting unit, a second pipeline unit, a locking unit, a second limiting unit and an elastic unit. The first end of the first pipeline unit is detachably connected with the first flange connecting structure and the second flange connecting structure. The first limiting unit is arranged on the outer wall of the second end of the first pipeline unit; the first end of the second pipeline unit is detachably connected with the second end of the first pipeline unit; the locking unit is coaxially arranged at the second end of the first pipeline unit; the second limiting unit is arranged on the inner wall of the locking unit and is in sliding connection with the first limiting unit; the elastic unit is arranged in the second limiting unit. The pipeline connecting pipe has the advantages that the slidable locking unit is arranged at the joint of the first pipeline unit and the second pipeline unit, so that the problem that the position-fixed pipeline connecting pipe is inconvenient to sleeve and mount is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a pipeline connection structure and a pipeline system which are easy to install. Background Art

[0002] In industrial production, each level of processing system is connected through pipelines. Pipes may crack and leak due to liquid corrosion and other reasons, and in some cases, the pipeline needs to be replaced. The position of some pipeline interfaces is fixed during installation, so the distance between the two ends of the replacement pipeline cannot be adjusted. If the pipeline of equal length is replaced, flange connection is usually used, and the sealing of the pipeline is poor; if a longer replacement pipeline is used for sleeve connection, the position of the mobile pipeline joint needs to be changed, which is time-consuming and labor-intensive.

[0003] Currently, no effective solution has been proposed for the problems existing in the related technology, such as the inconvenient installation of fixed-position pipe connection pipe sleeves and the easy leakage of flange connections. Utility Model Content

[0004] The purpose of the utility model is to provide a pipeline connection structure and a pipeline system that are easy to install in order to solve the problems existing in the related technology such as the inconvenience of installation of fixed-position pipeline connection pipe sleeves and the easy leakage of flange connections.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a pipeline connection structure that is easy to install is provided, comprising:

[0007] A first pipe unit, wherein a first end of the first pipe unit is detachably connected to the first flange connection structure and the second flange connection structure respectively;

[0008] a first limiting unit, wherein the first limiting unit is arranged on an outer wall of the second end of the first pipe unit;

[0009] a second pipe unit, wherein a first end of the second pipe unit is detachably connected to a second end of the first pipe unit and is coaxially arranged with the first pipe unit;

[0010] A locking unit, the locking unit is coaxially arranged at the second end of the first pipe unit, and is respectively slidably connected and rotatably connected to the first pipe unit and the second pipe unit;

[0011] a second limiting unit, which is disposed on an inner wall of the locking unit and is slidably connected to the first limiting unit;

[0012] An elastic unit is disposed inside the second limiting unit and abuts against the second pipe unit to fix the relative position of the locking unit and the second pipe unit.

[0013] In some embodiments, the first pipeline unit includes:

[0014] a first pipe element, wherein a first end of the first pipe element is detachably connected to a first flange connection structure, and a second end of the first pipe element is detachably connected to a second flange connection structure;

[0015] a second pipeline element, wherein a first end of the second pipeline element is connected to a second end of the first pipeline element, the second end of the second pipeline element is detachably connected to a first end of the second pipeline element, an outer wall of the second pipeline element is provided with the first limiting unit, and the second pipeline element is coaxially arranged with the first pipeline element;

[0016] A first positioning element is disposed at the second end of the second pipe element and is position-limitingly connected to the second pipe unit.

[0017] In some embodiments, the first limiting unit includes:

[0018] a first sliding element, the first sliding element being disposed on an outer wall of the second end of the first pipe unit and being slidably connected to the second limiting unit, wherein a first end of the first sliding element is coplanar with the second end of the first pipe unit;

[0019] A first limiting element, wherein the first limiting element is disposed on an outer wall of the second end of the first pipe unit and is located at the second end of the first sliding element, and the first limiting element is connected to the second limiting unit in a limiting manner.

[0020] In some embodiments, the second pipeline unit includes:

[0021] a third pipeline element, a first end of the third pipeline element being detachably connected to the second end of the first pipeline unit, and the third pipeline element being coaxially arranged with the first pipeline unit;

[0022] A second positioning element, the second positioning element is arranged at the first end of the third pipeline element and is limitedly connected to the first pipeline unit;

[0023] a fourth pipeline element, wherein a first end of the fourth pipeline element is connected to a second end of the third pipeline element, and the fourth pipeline element is coaxially arranged with the third pipeline element;

[0024] A third positioning element is arranged on the outer wall of the fourth pipe element and is detachably connected to the elastic unit.

[0025] In some embodiments, the locking unit comprises:

[0026] A locking element is coaxially arranged at the second end of the first pipe unit, the inner wall of the locking element is provided with the second limiting unit, and the locking element is respectively slidably connected and rotatably connected to the first pipe unit and the second pipe unit.

[0027] In some embodiments, the second limiting unit includes:

[0028] a second sliding element, the second sliding element being arranged on an inner wall of a second end of the locking unit and being slidably connected to the first limiting unit, the first end of the second sliding element being arranged flush with the second end of the locking unit, and the elastic unit being arranged inside the second sliding element;

[0029] A second limiting element, wherein the second limiting element is disposed on an inner wall of a second end of the locking unit and is located at a second end of the second sliding element, and the second limiting element is limitedly connected to the first limiting unit.

[0030] In some embodiments, the elastic unit includes:

[0031] an elastic element, the elastic element being arranged inside the second limiting unit and abutting against an outer wall of the second pipe unit;

[0032] A fourth positioning element, wherein the fourth positioning element is disposed at an end of the elastic element and is detachably connected to the second pipe unit, and is used to fix the relative position of the locking unit and the second pipe unit.

[0033] In some of the embodiments, it also includes:

[0034] A sealing unit, which is disposed between the first pipe unit and the second pipe unit and / or between the first limiting unit and the second limiting unit, and is used for sealing;

[0035] In some of the embodiments, the sealing unit comprises:

[0036] A first sealing element is disposed between the first pipe unit and the second pipe unit.

[0037] In some of the embodiments, the sealing unit further comprises:

[0038] A second sealing element is disposed between the first limiting unit and the second limiting unit.

[0039] In some of the embodiments, it also includes:

[0040] A third limiting unit is slidably disposed inside the second limiting unit and abuts against the second pipe unit, so as to fix the relative position of the locking unit and the second pipe unit.

[0041] In a second aspect, a pipeline system is provided, comprising:

[0042] The pipeline connection structure as described in the first aspect;

[0043] a first flange connection structure, wherein the first flange connection structure is respectively connected to the valve structure and an end portion of the first end of the first pipeline unit of the pipeline connection structure;

[0044] a second flange connection structure, the second flange connection structure being connected to an outer wall of a first end of the first pipeline unit of the pipeline connection structure;

[0045] A fixing structure, wherein the fixing structure is detachably connected to the first flange connection structure and the second flange connection structure respectively, and is used to fix the first flange connection structure and the second flange connection structure.

[0046] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0047] The utility model discloses a pipeline connection structure and a pipeline system which are easy to install. A slidable locking unit is provided at the connection between the first pipeline unit and the second pipeline unit, so that the second pipeline unit can be sleeved with the first pipeline unit without adjusting the length of the interface, thereby solving the problems of inconvenient sleeve installation of pipeline connection pipes with fixed positions and easy leakage of flange connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 1 is a schematic diagram of a pipeline connection structure according to an embodiment of the utility model;

[0049] Figure 2 is a schematic diagram of a first pipeline unit according to an embodiment of the utility model;

[0050] Figure 3 is a schematic diagram of a first limiting unit according to an embodiment of the utility model;

[0051] Figure 4 is a schematic diagram of a second pipeline unit according to an embodiment of the utility model;

[0052] Figure 5 is a schematic diagram of a locking unit according to an embodiment of the utility model;

[0053] Figure 6 is a schematic diagram of a second limiting unit according to an embodiment of the utility model;

[0054] Figure 7 is a schematic diagram of an elastic unit according to an embodiment of the utility model;

[0055] Figure 8 Schematic diagram of the pipeline connection structure according to an embodiment of the utility model (II);

[0056] Fig. 9 is a schematic diagram of a sealing unit according to an embodiment of the utility model;

[0057] Fig.10 Schematic diagram of the pipeline connection structure according to the embodiment of the utility model (III);

[0058] Fig.11 It is a schematic diagram of a pipeline system according to an embodiment of the utility model.

[0059] The reference numerals are: 100, pipeline connection structure;

[0060] 110, first pipeline unit; 111, first pipeline element; 112, second pipeline element; 113, first positioning element;

[0061] 120, first limiting unit; 121, first sliding element; 122, first limiting element;

[0062] 130, second pipeline unit; 131, third pipeline element; 132, second positioning element; 133, fourth pipeline element; 134, third positioning element;

[0063] 140. Locking unit; 141. Locking element;

[0064] 150. A second limiting unit; 151. A second sliding element; 152. A second limiting element;

[0065] 160. elastic unit; 161. elastic element; 162. fourth positioning element;

[0066] 170. Sealing unit; 171. First sealing element; 172. Second sealing element;

[0067] 180, third limiting unit;

[0068] 200, first flange connection structure;

[0069] 300, second flange connection structure;

[0070] 400. Fixed structure. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0072] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0073] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0074] Example 1

[0075] This embodiment relates to the pipeline connection structure of the utility model.

[0076] An illustrative embodiment of the present utility model is as follows: Figure 1 As shown, a pipe connection structure 100 that is easy to install includes a first pipe unit 110 , a first limiting unit 120 , a second pipe unit 130 , a locking unit 140 , a second limiting unit 150 and an elastic unit 160 . Among them, the first end of the first pipe unit 110 is detachably connected to the first flange connection structure and the second flange connection structure respectively; the first limiting unit 120 is arranged on the outer wall of the second end of the first pipe unit 110; the first end of the second pipe unit 130 is detachably connected to the second end of the first pipe unit 110, and is coaxially arranged with the first pipe unit 110; the locking unit 140 is coaxially arranged at the second end of the first pipe unit 110, and is slidingly connected and rotatably connected to the first pipe unit 110 and the second pipe unit 130 respectively; the second limiting unit 150 is arranged on the inner wall of the locking unit 140, and is slidably connected to the first limiting unit 120; the elastic unit 160 is arranged inside the second limiting unit 150, and abuts against the second pipe unit 130, for fixing the relative position of the locking unit 140 and the second pipe unit 130.

[0077] like Figure 2As shown, the first pipeline unit 110 includes a first pipeline element 111, a second pipeline element 112 and a first positioning element 113. The first end of the first pipeline element 111 is detachably connected to the first flange connection structure, and the second end of the first pipeline element 111 is detachably connected to the second flange connection structure; the first end of the second pipeline element 112 is connected to the second end of the first pipeline element 111, and the second end of the second pipeline element 112 is detachably connected to the first end of the second pipeline unit 130, the outer wall of the second pipeline element 112 is provided with a first limiting unit 120, and the second pipeline element 112 is coaxially arranged with the first pipeline element 111; the first positioning element 113 is arranged at the second end of the second pipeline element 112, and is limitedly connected to the second pipeline unit 130.

[0078] In some embodiments, the material of the first pipe element 111 includes, but is not limited to, stainless steel and polytetrafluoroethylene. Preferably, the material of the first pipe element 111 is polytetrafluoroethylene.

[0079] In some embodiments, the first pipe element 111 is a first short pipe.

[0080] In some embodiments, the second pipe element 112 is integrally formed with the first pipe element 111 .

[0081] The size of the second pipe element 112 matches the size of the first pipe element 111. Generally, the inner diameter of the second pipe element 112 is equal to the inner diameter of the first pipe element 111, the outer diameter of the second pipe element 112 is smaller than the outer diameter of the first pipe element 111, and the axial dimension of the second pipe element 112 is larger than the axial dimension of the first pipe element 111.

[0082] In some embodiments, the material of the second pipe element 112 includes, but is not limited to, stainless steel and polytetrafluoroethylene. Preferably, the material of the second pipe element 112 is polytetrafluoroethylene.

[0083] In some embodiments, the second pipe element 112 is a second short pipe.

[0084] The first positioning element 113 is disposed on the inner wall or the outer wall of the second end of the second pipe element 112 .

[0085] The size of the first positioning element 113 matches the size of the second pipe element 112. Generally, the outer diameter of the first positioning element 113 is smaller than the outer diameter of the second pipe element 112, the inner diameter of the first positioning element 113 is equal to the inner diameter of the second pipe element 112, and the axial dimension of the first positioning element 113 is smaller than the axial dimension of the second pipe element 112; or, the outer diameter of the first positioning element 113 is equal to the outer diameter of the second pipe element 112, the inner diameter of the first positioning element 113 is larger than the inner diameter of the second pipe element 112, and the axial dimension of the first positioning element 113 is smaller than the axial dimension of the second pipe element 112.

[0086] In some of the embodiments, the first positioning element 113 is a slot or a clamping member.

[0087] like Figure 3 As shown, the first limiting unit 120 includes a first sliding element 121 and a first limiting element 122. The first sliding element 121 is disposed on the outer wall of the second end of the first pipe unit 110 and is slidably connected to the second limiting unit 150, and the first end of the first sliding element 121 is coplanar with the second end of the first pipe unit 110; the first limiting element 122 is disposed on the outer wall of the second end of the first pipe unit 110 and is located at the second end of the first sliding element 121, and the first limiting element 122 is limitedly connected to the second limiting unit 150.

[0088] Specifically, the first sliding element 121 is disposed on the outer wall of the second end of the second pipe element 112 , and the first end of the first sliding element 121 is flush with the second end of the second pipe element 112 ; the first limiting element 122 is disposed on the outer wall of the second end of the second pipe element 112 .

[0089] The axial direction of the first sliding element 121 is parallel to the axial direction of the second pipe element 112 .

[0090] In some embodiments, there are multiple first sliding elements 121 , and the multiple first sliding elements 121 are disposed around the second pipe element 112 .

[0091] In some embodiments, the number of the first sliding elements 121 is two, and the two first sliding elements 121 are symmetrically arranged around the second pipe element 112 .

[0092] The size of the first sliding element 121 matches the size of the second pipe element 112. Generally, the axial size of the first sliding element 121 is less than 1 / 2 of the axial size of the second pipe element 112.

[0093] In some embodiments, the cross-section of the first sliding element 121 is rectangular.

[0094] In some embodiments, the first sliding element 121 is a sliding block.

[0095] In some embodiments, the first limiting element 122 and the first sliding element 121 are integrally formed.

[0096] The number of the first limiting elements 122 matches the number of the first sliding elements 121. Generally, the number of the first limiting elements 122 is equal to the number of the first sliding elements 121, that is, the first limiting elements 122 correspond to the first sliding elements 121 one by one.

[0097] In some embodiments, the number of the first limiting elements 122 is 2. The two first limiting elements 122 are symmetrically arranged around the second pipe element 112 .

[0098] The size of the first limiting element 122 matches the size of the second pipe element 112. Generally, the arc length of the first limiting element 122 is less than 2n / 1 of the circumference of the second pipe element 112, where n is the number of the first limiting elements 122.

[0099] The size of the first limiting element 122 matches the size of the first sliding element 121. Generally, the thickness of the first limiting element 122 is not greater than the thickness of the first sliding element 121.

[0100] In some embodiments, the cross section of the first limiting element 122 is arc-shaped, wherein the center of the arc of the first limiting element 122 coincides with the center axis of the second pipe element 112 .

[0101] In some of the embodiments, the first limiting element 122 is a limiting block.

[0102] like Figure 4 As shown, the second pipe unit 130 includes a third pipe element 131, a second positioning element 132, a fourth pipe element 133 and a third positioning element 134. The first end of the third pipe element 131 is detachably connected to the second end of the first pipe unit 110, and the third pipe element 131 is coaxially arranged with the first pipe unit 110; the second positioning element 132 is arranged at the first end of the third pipe element 131, and is limitedly connected with the first pipe unit 110; the first end of the fourth pipe element 133 is connected to the second end of the third pipe element 131, and the fourth pipe element 133 is coaxially arranged with the third pipe element 131; the third positioning element 134 is arranged on the outer wall of the fourth pipe element 133, and is detachably connected with the elastic unit 160.

[0103] Specifically, the third pipe element 131 is coaxially arranged with the second pipe element 112 and abuts against the second end of the second pipe element 112 ; the second positioning element 132 is clamped with the first positioning element 113 .

[0104] The size of the third pipe element 131 matches the size of the second pipe element 112. Generally, the inner diameter of the third pipe element 131 is not greater than the inner diameter of the second pipe element 112, and the outer diameter of the third pipe element 131 is not greater than the outer diameter of the second pipe element 112.

[0105] In some of the embodiments, the inner diameter of the third pipe element 131 is smaller than the inner diameter of the second pipe element 112 .

[0106] In some embodiments, the outer diameter of the third pipe element 131 is smaller than the outer diameter of the second pipe element 112 .

[0107] In some embodiments, the material of the third pipe element 131 includes, but is not limited to, stainless steel and polytetrafluoroethylene. Preferably, the material of the third pipe element 131 is polytetrafluoroethylene.

[0108] In some embodiments, the third pipe element 131 is a third short pipe.

[0109] In some embodiments, the second positioning element 132 and the third pipe element 131 are integrally formed.

[0110] The second positioning element 132 is disposed on the inner wall or the outer wall of the first end of the third pipe element 131 .

[0111] The size of the second positioning element 132 matches the size of the first positioning element 113. Generally, the inner diameter of the second positioning element 132 is equal to the inner diameter of the first positioning element 113, the outer diameter of the second positioning element 132 is equal to the outer diameter of the first positioning element 113, and the axial dimension of the second positioning element 132 is equal to the axial dimension of the first positioning element 113.

[0112] In some of the embodiments, the second positioning element 132 is a clip or a slot.

[0113] In some embodiments, the fourth pipe element 133 and the third pipe element 131 are integrally formed.

[0114] The fourth pipe element 133 matches the size of the third pipe element 131. Generally, the inner diameter of the fourth pipe element 133 is equal to the inner diameter of the third pipe element 131, and the outer diameter of the fourth pipe element 133 is not less than the outer diameter of the third pipe element 131.

[0115] In some embodiments, the outer diameter of the fourth pipe element 133 is greater than the outer diameter of the third pipe element 131 .

[0116] In some embodiments, the material of the fourth pipe element 133 includes, but is not limited to, stainless steel and polytetrafluoroethylene. Preferably, the material of the fourth pipe element 133 is polytetrafluoroethylene.

[0117] In some embodiments, the fourth pipe element 133 is a fourth short pipe.

[0118] In some of the embodiments, the third positioning element 134 is embedded in the surface of the fourth pipe element 133 .

[0119] In some embodiments, there are multiple third positioning elements 134 , and the multiple third positioning elements 134 are disposed around the fourth pipe element 133 .

[0120] In some of the embodiments, the third positioning elements 134 are arranged in an array, such as m rows×n columns, where m≥2 and n≥2.

[0121] The size of the third positioning element 134 matches the size of the fourth pipe element 133. Generally, the thickness of the third positioning element 134 is less than 1 / 2 of the thickness of the fourth pipe element 133.

[0122] In some of the embodiments, the cross section of the third positioning element 134 is arc-shaped.

[0123] In some of the embodiments, the third positioning element 134 includes but is not limited to a limiting slot.

[0124] like Figure 5 As shown, the locking unit 140 includes a locking element 141. The locking element 141 is coaxially arranged at the second end of the first pipe unit 110, and the inner wall of the locking element 141 is provided with a second limiting unit 150. The locking element 141 is slidably connected and rotatably connected to the first pipe unit 110 and the second pipe unit 130 respectively.

[0125] Specifically, the locking element 141 is slidably connected and rotationally connected to the second pipe element 112 , the third pipe element 131 , and the fourth pipe element 133 , respectively.

[0126] The size of the locking element 141 matches the size of the second pipe element 112. Generally, the inner diameter of the locking element 141 is equal to the outer diameter of the second pipe element 112, and the axial dimension of the locking element 141 is smaller than the axial dimension of the second pipe element 112.

[0127] The size of the locking element 141 matches the size of the fourth pipe element 133. Generally, the inner diameter of the locking element 141 is equal to the outer diameter of the fourth pipe element 133, and the axial dimension of the locking element 141 is greater than the axial dimension of the fourth pipe element 133.

[0128] The size of the locking element 141 matches the size of the first sliding element 121. Generally, the axial size of the locking element 141 is greater than the axial size of the first sliding element 121, and the wall thickness of the locking element 141 is greater than the thickness of the first sliding element 121.

[0129] In some embodiments, the material of the locking element 141 includes, but is not limited to, stainless steel and polytetrafluoroethylene. Preferably, the material of the locking element 141 is polytetrafluoroethylene.

[0130] In some of the embodiments, the locking element 141 is a locking sleeve.

[0131] like Figure 6 As shown, the second limiting unit 150 includes a second sliding element 151 and a second limiting element 152. The second sliding element 151 is arranged on the inner wall of the second end of the locking unit 140 and is slidably connected to the first limiting unit 120. The first end of the second sliding element 151 is arranged flush with the second end of the locking unit 140, and an elastic unit 160 is arranged inside the second sliding element 151; the second limiting element 152 is arranged on the inner wall of the second end of the locking unit 140 and is located at the second end of the second sliding element 151, and the second limiting element 152 is limitedly connected to the first limiting unit 120.

[0132] Specifically, the second sliding element 151 is arranged on the inner wall of the second end of the locking element 141, and is slidably connected to the first sliding element 121 and the first limiting element 122. The first end of the second sliding element 151 is arranged flush with the second end of the locking element 141; the second limiting element 152 is arranged on the inner wall of the second end of the locking element 141, and is limitedly connected to the first limiting element 122.

[0133] The second sliding element 151 is disposed through the second end of the inner wall of the locking element 141 .

[0134] The number of the second sliding elements 151 matches the number of the first sliding elements 121. Generally, the number of the second sliding elements 151 is equal to the number of the first sliding elements 121. That is, the second sliding elements 151 correspond to the first sliding elements 121 one by one.

[0135] The number of the second sliding elements 151 matches the number of the third positioning elements 134. Generally, the number of the second sliding elements 151 is not greater than the number of the third positioning elements 134. That is, each second sliding element 151 corresponds to at least one third positioning element 134.

[0136] In some embodiments, there are multiple second sliding elements 151 , and the multiple second sliding elements 151 are disposed around the locking element 141 .

[0137] In some embodiments, the number of the second sliding elements 151 is 2. The two second sliding elements 151 are symmetrically arranged around the inner wall of the locking element 141 .

[0138] The size of the second sliding element 151 matches the size of the first sliding element 121. Generally, the axial size of the second sliding element 151 is greater than the axial size of the first sliding element 121.

[0139] The size of the second sliding element 151 matches the size of the first limiting element 122. Generally, the thickness of the second sliding element 151 is not less than the thickness of the first limiting element 122, and the arc length of the second sliding element 151 is not less than the arc length of the first limiting element 122.

[0140] The size of the second sliding element 151 matches the size of the third positioning element 134. Generally, the arc length of the second sliding element 151 is greater than the outer diameter of the third positioning element 134.

[0141] The size of the second sliding element 151 matches the size of the locking element 141. Generally, the axial size of the second sliding element 151 is smaller than the axial size of the locking element 141, and the thickness of the second sliding element 151 is smaller than the thickness of the locking element 141.

[0142] In some embodiments, the thickness and arc length of the second sliding element 151 are respectively equal to the thickness and arc length of the first limiting element 122 , and the axial dimension of the second sliding element 151 is equal to twice the axial dimension of the first sliding element 121 .

[0143] In some embodiments, the second sliding element 151 is a sliding groove.

[0144] The second limiting element 152 is communicated with the second sliding element 151 .

[0145] The number of the second limiting elements 152 matches the number of the second sliding elements 151. Generally, the number of the second limiting elements 152 is equal to the number of the second sliding elements 151. That is, the second limiting elements 152 correspond to the second sliding elements 151 one by one.

[0146] In some embodiments, the number of the second limiting elements 152 is 2. The two second limiting elements 152 are symmetrically arranged around the inner wall of the locking element 141 .

[0147] The size of the second limiting element 152 matches the size of the first limiting element 122. Generally, the arc length of the second limiting element 152 is not less than the arc length of the first limiting element 122, the width of the second limiting element 152 is not less than the width of the first limiting element 122, and the thickness of the second limiting element 152 is not less than the thickness of the second limiting element 152.

[0148] The size of the second limiting element 152 matches the size of the locking element 141. Generally, the thickness of the second limiting element 152 is smaller than the wall thickness of the locking element 141.

[0149] In some of the embodiments, the arc length, width, and thickness of the second limiting element 152 are respectively equal to the arc length, width, and thickness of the first limiting element 122 .

[0150] In some of the embodiments, the second limiting element 152 is a limiting groove.

[0151] like Figure 7 As shown, the elastic unit 160 includes an elastic element 161 and a fourth positioning element 162. The elastic element 161 is disposed inside the second limiting unit 150 and abuts against the outer wall of the second pipe unit 130; the fourth positioning element 162 is disposed at the end of the elastic element 161 and is detachably connected to the second pipe unit 130, so as to fix the relative position of the locking unit 140 and the second pipe unit 130.

[0152] Specifically, the elastic element 161 is disposed inside the second sliding element 151 and abuts against the outer wall of the third pipe element 131 .

[0153] In some embodiments, the connection method between the elastic element 161 and the second sliding element 151 includes but is not limited to welding.

[0154] The number of the elastic elements 161 matches the number of the third positioning elements 134. Generally, the number of the elastic elements 161 is equal to the number of the third positioning elements 134. That is, the elastic elements 161 correspond to the third positioning elements 134 one by one.

[0155] The number of the elastic elements 161 matches the number of the second sliding elements 151 . Generally, the number of the elastic elements 161 is an integer multiple of the number of the second sliding elements 151 . That is, each second sliding element 151 is provided with at least one elastic element 161 .

[0156] In some embodiments, there are multiple elastic elements 161 , and the multiple elastic elements 161 are disposed around the locking element 141 .

[0157] In some of the embodiments, the plurality of elastic elements 161 are arranged in an array, such as m rows×n columns, where m≥2 and n≥2.

[0158] In some embodiments, when a plurality of elastic elements 161 are disposed on each second sliding element 151, the plurality of elastic elements 161 are disposed in an array, such as m rows×n columns, where m≥1, n≥1, and m×n≥2. That is, at least one row and two columns or two rows and one column.

[0159] The size of the elastic element 161 matches the size of the second sliding element 151. Generally, the axial size of the elastic element 161 is not greater than the axial size of the second sliding element 151, the width of the elastic element 161 is less than the arc length of the second sliding element 151, and the thickness of the elastic element 161 when not compressed is greater than the thickness of the second sliding element 151.

[0160] In some of the embodiments, the elastic element 161 includes but is not limited to an elastic pressure plate.

[0161] In some embodiments, the fourth positioning element 162 and the elastic element 161 are integrally formed.

[0162] The number of the fourth positioning elements 162 matches the number of the elastic elements 161. Generally, the number of the fourth positioning elements 162 is equal to the number of the elastic elements 161. That is, the fourth positioning elements 162 correspond to the elastic elements 161 one by one.

[0163] The size of the fourth positioning element 162 matches the size of the third positioning element 134. Generally, the radial size of the fourth positioning element 162 is not less than the radial size of the third positioning element 134, and the thickness of the fourth positioning element 162 is not less than the thickness of the third positioning element 134.

[0164] In some of the embodiments, the cross section of the fourth positioning element 162 is in an arc shape.

[0165] In some of the embodiments, the fourth positioning element 162 includes but is not limited to a limiting buckle.

[0166] The method of using the utility model is as follows:

[0167] (I) Initial state

[0168] The second end of the second pipe element 112 and the second end of the locking element 141 are arranged flush with each other, and the first sliding element 121 and the first limiting element 122 are located inside the second sliding element 151 .

[0169] (II) Connection status

[0170] The second pipe element 112 and the third pipe element 131 are abutted against each other, and the first positioning element 113 and the second positioning element 132 are clamped together;

[0171] Slide the locking element 141 toward the third pipe element 131 along the axial direction until the first limiting element 122 abuts against the end of the second sliding element 151, so that the locking element 141 is simultaneously sleeved on the outer sides of the second pipe element 112 and the third pipe element 131;

[0172] The locking element 141 is rotated to allow the first limiting element 122 to be inserted into the second limiting element 152 to fix the horizontal position of the locking element 141 , and at the same time, the third positioning element 134 and the fourth positioning element 162 are mutually engaged.

[0173] The advantage of the utility model is that a slidable locking unit is provided at the connection between the first pipe unit and the second pipe unit, so that the second pipe unit can be socketed with the first pipe unit without adjusting the length of the interface, thereby solving the problems of inconvenient socket installation of fixed-position pipe connecting pipes and easy leakage of flange connections.

[0174] Example 2

[0175] This embodiment is a supplementary embodiment of Embodiment 1.

[0176] like Figure 8 As shown, the pipe connection structure 100 further includes a sealing unit 170. The sealing unit 170 is disposed between the first pipe unit 110 and the second pipe unit 130 and / or between the first limiting unit 120 and the second limiting unit 150 for sealing.

[0177] like Fig. 9 As shown, the sealing unit 170 includes a first sealing element 171 . The first sealing element 171 is disposed between the first pipe unit 110 and the second pipe unit 130 .

[0178] Specifically, the first sealing element 171 is disposed between the second pipe element 112 and the third pipe element 131;

[0179] The size of the first sealing element 171 matches the size of the second pipe element 112. Generally, the inner diameter and outer diameter of the first sealing element 171 are equal to the inner diameter and outer diameter of the second pipe element 112, respectively.

[0180] In some embodiments, the cross section of the first sealing element 171 is annular.

[0181] In some of the embodiments, the first sealing element 171 is a rubber sealing gasket.

[0182] like Fig. 9As shown, the sealing unit 170 includes a second sealing element 172 . The second sealing element 172 is disposed between the first limiting unit 120 and the second limiting unit 150 .

[0183] The second sealing element 172 is disposed between the first limiting element 122 and the second limiting element 152 .

[0184] In some of the embodiments, the connection method between the second sealing element 172 and the first limiting element 122 includes but is not limited to bonding.

[0185] The size of the second sealing element 172 matches the size of the first limiting element 122. Generally, the arc length of the second sealing element 172 is not greater than the arc length of the first limiting element 122, and the thickness of the second sealing element 172 is less than the difference between the width of the first limiting element 122 and the width of the second limiting element 152.

[0186] In some embodiments, the second sealing element 172 is a rubber sealing pad.

[0187] The advantage of this embodiment is that the sealing performance between the first pipe unit and the second pipe unit is improved by providing the sealing unit.

[0188] Example 3

[0189] This embodiment is a supplementary embodiment of Embodiments 1 and 2.

[0190] like Fig.10 As shown, the pipeline connection structure 100 further includes a third limiting unit 180 , which is slidably disposed inside the second limiting unit 150 and abuts against the second pipeline unit 130 to fasten the relative position of the locking unit 140 and the second pipeline unit 130 .

[0191] Specifically, the third limiting unit 180 is slidably disposed inside the second sliding element 151 and abuts against the outer wall of the third pipe element 131 .

[0192] The number of the third limiting units 180 matches the number of the second sliding elements 151. Generally, the number of the third limiting units 180 is equal to the number of the second sliding elements 151. That is, the third limiting units 180 correspond to the second sliding elements 151 one by one.

[0193] The size of the third limiting unit 180 matches the size of the second sliding element 151. Generally, the thickness of the third limiting unit 180 is equal to the thickness of the second sliding element 151, the axial dimension of the third limiting unit 180 is smaller than the axial dimension of the second sliding element 151, and the arc length of the third limiting unit 180 is equal to the difference between the arc length of the second sliding element 151 and the width of the first sliding element 121.

[0194] In some embodiments, the third limiting unit 180 is made of a material with a friction coefficient of 0.5-1, including but not limited to rubber.

[0195] In some of the embodiments, the third limiting unit 180 includes but is not limited to a limiting block.

[0196] The advantage of this embodiment is that, by providing the third limiting unit, the relative position of the locking unit and the second pipe unit is made more stable.

[0197] Example 4

[0198] This embodiment relates to a pipeline system of the utility model.

[0199] like Fig.11 As shown, a pipeline system includes the pipeline connection structure 100, the first flange connection structure 200, the second flange connection structure 300 and the fixing structure 400 as described in Examples 1 to 2. The first flange connection structure 200 is connected to the valve structure and the end of the first end of the first pipeline unit 110 of the pipeline connection structure 100 respectively; the second flange connection structure 300 is connected to the outer wall of the first end of the first pipeline unit 110 of the pipeline connection structure 100; the fixing structure 400 is detachably connected to the first flange connection structure 200 and the second flange connection structure 300 respectively, and is used to fix the first flange connection structure 200 and the second flange connection structure 300.

[0200] Specifically, the first flange connection structure 200 is connected to the first end of the first pipe element 111 ; the second flange connection structure 300 is connected to the second end of the first pipe element 111 and the first end of the second pipe element 112 , respectively.

[0201] The size of the first flange connection structure 200 matches the size of the first pipe element 111. Generally, the inner diameter of the first flange connection structure 200 is smaller than the inner diameter of the first pipe element 111, and the outer diameter of the first flange connection structure is larger than the outer diameter of the first pipe element 111.

[0202] In some of the embodiments, the first flange connection structure 200 is a first flange member.

[0203] The size of the second flange connection structure 300 matches the size of the first pipe element 111. Generally, the outer diameter of the second flange connection structure 300 is greater than the outer diameter of the first pipe element 111.

[0204] The size of the second flange connection structure 300 matches the size of the second pipe element 112. Generally, the inner diameter of the second flange connection structure 300 is equal to the outer diameter of the second pipe element 112.

[0205] In some of the embodiments, the second flange connection structure 300 is a second flange member.

[0206] In some embodiments, there are multiple fixing structures 400. The multiple fixing structures 400 are arranged around.

[0207] In some of the embodiments, the fixing structure 400 includes but is not limited to a bolt group.

[0208] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe connection structure that is easy to install, characterized in that: include: A first pipe unit, wherein a first end of the first pipe unit is detachably connected to the first flange connection structure and the second flange connection structure respectively; A first limiting unit, wherein the first limiting unit is arranged on an outer wall of the second end of the first pipe unit; a second pipe unit, wherein a first end of the second pipe unit is detachably connected to a second end of the first pipe unit and is coaxially arranged with the first pipe unit; A locking unit, the locking unit is coaxially arranged at the second end of the first pipe unit, and is respectively slidably connected and rotatably connected to the first pipe unit and the second pipe unit; a second limiting unit, which is disposed on an inner wall of the locking unit and is slidably connected to the first limiting unit; An elastic unit is disposed inside the second limiting unit and abuts against the second pipe unit to fix the relative position of the locking unit and the second pipe unit.

2. The pipeline connection structure according to claim 1, characterized in that: The first pipeline unit comprises: a first pipe element, wherein a first end of the first pipe element is detachably connected to a first flange connection structure, and a second end of the first pipe element is detachably connected to a second flange connection structure; a second pipeline element, wherein a first end of the second pipeline element is connected to a second end of the first pipeline element, the second end of the second pipeline element is detachably connected to a first end of the second pipeline element, an outer wall of the second pipeline element is provided with the first limiting unit, and the second pipeline element is coaxially arranged with the first pipeline element; A first positioning element is disposed at the second end of the second pipe element and is position-limitingly connected to the second pipe unit.

3. The pipeline connection structure according to claim 1, characterized in that: The first limiting unit comprises: a first sliding element, the first sliding element being disposed on an outer wall of the second end of the first pipe unit and being slidably connected to the second limiting unit, wherein a first end of the first sliding element is coplanar with the second end of the first pipe unit; A first limiting element, wherein the first limiting element is disposed on an outer wall of the second end of the first pipe unit and is located at the second end of the first sliding element, and the first limiting element is connected to the second limiting unit in a limiting manner.

4. The pipeline connection structure according to claim 1, characterized in that: The second pipeline unit comprises: a third pipeline element, a first end of the third pipeline element being detachably connected to the second end of the first pipeline unit, and the third pipeline element being coaxially arranged with the first pipeline unit; A second positioning element, the second positioning element is arranged at the first end of the third pipeline element and is limitedly connected to the first pipeline unit; a fourth pipeline element, wherein a first end of the fourth pipeline element is connected to a second end of the third pipeline element, and the fourth pipeline element is coaxially arranged with the third pipeline element; A third positioning element is arranged on the outer wall of the fourth pipe element and is detachably connected to the elastic unit.

5. The pipeline connection structure according to claim 1, characterized in that: The locking unit comprises: A locking element is coaxially arranged at the second end of the first pipe unit, the inner wall of the locking element is provided with the second limiting unit, and the locking element is respectively slidably connected and rotatably connected to the first pipe unit and the second pipe unit.

6. The pipeline connection structure according to claim 1, characterized in that: The second limiting unit comprises: a second sliding element, the second sliding element being arranged on an inner wall of a second end of the locking unit and being slidably connected to the first limiting unit, the first end of the second sliding element being arranged flush with the second end of the locking unit, and the elastic unit being arranged inside the second sliding element; A second limiting element is disposed on an inner wall of a second end of the locking unit and located at a second end of the second sliding element, and the second limiting element is connected to the first limiting unit in a limiting manner.

7. The pipeline connection structure according to claim 1, characterized in that: The elastic unit comprises: an elastic element, the elastic element being arranged inside the second limiting unit and abutting against an outer wall of the second pipe unit; A fourth positioning element, wherein the fourth positioning element is disposed at an end of the elastic element and is detachably connected to the second pipe unit, and is used to fix the relative position of the locking unit and the second pipe unit.

8. The pipeline connection structure according to any one of claims 1 to 7, characterized in that: Also includes: a sealing unit, the sealing unit being disposed between the first pipe unit and the second pipe unit and / or between the first limiting unit and the second limiting unit for sealing; and / or A third limiting unit is slidably disposed inside the second limiting unit and abuts against the second pipe unit, so as to fix the relative position of the locking unit and the second pipe unit.

9. The pipeline connection structure according to claim 8, characterized in that: The sealing unit comprises: a first sealing element, the first sealing element being disposed between the first pipe unit and the second pipe unit; and / or A second sealing element is disposed between the first limiting unit and the second limiting unit.

10. A pipeline system, characterized in that: include: The pipeline connection structure according to any one of claims 1 to 9; a first flange connection structure, wherein the first flange connection structure is respectively connected to the valve structure and an end portion of the first end of the first pipeline unit of the pipeline connection structure; a second flange connection structure, the second flange connection structure being connected to an outer wall of a first end of the first pipeline unit of the pipeline connection structure; A fixing structure, wherein the fixing structure is detachably connected to the first flange connection structure and the second flange connection structure respectively, and is used to fix the first flange connection structure and the second flange connection structure.

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