Stable-connection corrosion-resistant differential pressure pipe

Abstract

The utility model belongs to the technical field of differential pressure pipes, and particularly relates to a corrosion-resistant differential pressure pipe stable in connection. When a first differential pressure pipe and a second differential pressure pipe are connected, a connecting block on a second flange is aligned with an inserting groove formed in the first flange, the connecting block is inserted into the inserting groove, the second flange is rotated after being inserted, an installation block can slide in a sliding groove, and the second flange is rotated; the connecting block can be clamped on the side face of the first flange, the first differential pressure pipe and the second differential pressure pipe can be fixed, connection is simple and rapid, the first flange is provided with the connecting assembly used for fixing the connecting block, the stability of connection between the first differential pressure pipe and the second differential pressure pipe is further enhanced, looseness generated after long-time use is prevented, and the service life of the differential pressure pipe is prolonged. And the inner walls of the differential pressure pipe I and the differential pressure pipe II are both provided with the corrosion-resistant layers, so that the corrosion resistance of the differential pressure pipe is obviously improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of differential pressure pipes, and in particular relates to a corrosion-resistant differential pressure pipe with stable connection. Background Art

[0002] In the chemical, petroleum, pharmaceutical and other industries, differential pressure pipes are often needed to monitor or control the pressure difference in different areas. However, the working environment of these industries is often accompanied by strong corrosive media, and corrosion-resistant differential pressure pipes are usually required to maintain the normal operation of the system. At present, during the installation of corrosion-resistant differential pressure pipes, it is often necessary to connect multiple differential pressure pipes to each other. At present, the connection method between differential pressure pipes is generally to use clamps or other connecting devices to be sleeved on the upper surface of the two pipes, and then the staff uses bolts to fix the clamps or other connecting devices. This method is time-consuming, labor-intensive and inefficient. Utility Model Content

[0003] The purpose of the utility model is to provide a corrosion-resistant pressure differential pipe with a stable connection in view of the above-mentioned technical problems, so as to solve the problems raised in the above-mentioned background technology.

[0004] In view of this, the utility model provides a corrosion-resistant pressure differential pipe with stable connection, including a pressure differential pipe 1 and a pressure differential pipe 2, wherein one end of the pressure differential pipe 1 close to the pressure differential pipe 2 is fixedly connected to a flange 1, and one end of the pressure differential pipe 2 close to the pressure differential pipe 1 is fixedly connected to a flange 2, a mounting block is fixedly installed on the side of the flange 2, and a connecting block is fixedly installed on one end of the mounting block, a slot and a slide groove are provided inside the flange 1, the mounting block is located inside the slide groove, the connecting block is clamped on the inner side of the flange 1, and a connecting component for fixing the connecting block is provided on the flange 1;

[0005] Corrosion-resistant layer: the inner walls of the differential pressure pipe 1 and the differential pressure pipe 2 are both provided with a corrosion-resistant layer.

[0006] In the above technical solution, further, the cross section of the connecting block is the same as the cross section of the slot, the slot is connected to the slide groove, and the flange one is located between the flange two and the connecting block.

[0007] In the above technical solution, further, the connection component includes:

[0008] A fixing block, the fixing block is fixedly arranged on the side of flange 1;

[0009] Support rod, a support rod is arranged on the fixed block;

[0010] A clamping block, one end of the support rod is fixedly connected with the clamping block;

[0011] A card slot is provided inside the connecting block;

[0012] A first connecting groove, which is disposed on one side of the connecting block and communicates with the card slot;

[0013] First slide grooves: two first slide grooves are arranged inside the connecting block, and the two first slide grooves are communicated with the card slot;

[0014] Installation grooves are provided at two side ends of the connecting block and communicate with the first sliding groove;

[0015] A push rod, which is slidably connected to the first sliding groove and has a clearance fit with the mounting groove;

[0016] An extrusion block, which is fixedly connected to one end of the push rod close to the card slot;

[0017] A limit block, which is fixedly connected to an end of the push rod away from the card slot;

[0018] The spring is arranged in the installation groove, and one end of the spring abuts against the limit block, and the other end abuts against the bottom of the installation groove.

[0019] In the above technical solution, further, the connection component also includes:

[0020] A second connecting groove, a second connecting groove is provided on one side of the fixing block close to the connecting block, and the support rod is slidably connected in the second connecting groove;

[0021] A second slide groove is provided in the fixed block, and the second slide groove 22 is communicated with the second connecting groove;

[0022] A limit plate is slidably arranged in the second slide groove, and the limit plate is fixedly connected to the support rod;

[0023] A rectangular groove is provided on a side of the fixing block away from the flange, and the rectangular groove is communicated with the second sliding groove;

[0024] The slider is slidably connected to the rectangular groove, and the slider is fixedly connected to the support rod.

[0025] In the above technical solution, further, a plurality of grooves are opened on the outer wall of one side of the pressure difference tube, and air bags are arranged in each of the grooves.

[0026] In the above technical solution, further, an annular groove is provided on an inner wall of the pressure differential tube, and a sealing ring is provided on the inner wall of the annular groove.

[0027] In the above technical solution, further, an annular airbag is provided between the sealing ring and the inner wall of the bottom of the annular groove, and an air tube is provided between the annular airbag and the airbag.

[0028] In the above technical solution, further, each trachea is covered with a protective cover on the outside.

[0029] The beneficial effects of the utility model are:

[0030] 1. The inner walls of the differential pressure pipe 1 and differential pressure pipe 2 are both provided with a corrosion-resistant layer, which significantly improves the corrosion resistance of the differential pressure pipe and prolongs its service life.

[0031] 2. A connection assembly for fixing the connection block is provided on flange 1, which further enhances the stability of the connection between differential pressure tube 1 and differential pressure tube 2, prevents loosening after long-term use, and ensures the safe use of the differential pressure tube in a high-pressure differential environment.

[0032] 3. When the pressure differential tube 1 and the pressure differential tube 2 are connected, the outer wall of one side of the pressure differential tube 2 squeezes the airbags in the multiple grooves on one side of the pressure differential tube 1, and the squeezed gas is transported to the annular airbag in the annular groove through the air pipe, so that the annular airbag expands to push the sealing ring out of the annular groove, thereby sealing the connection between the pressure differential tube 1 and the pressure differential tube 2 to ensure the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the utility model;

[0034] Figure 2 It is an exploded view of the utility model;

[0035] Figure 3 It is a schematic diagram of the airbag structure of the utility model;

[0036] Figure 4 This utility model Figure 3 A partial enlarged view of the middle A;

[0037] Figure 5 It is a schematic diagram of the structure of the annular airbag of the utility model;

[0038] Figure 6 It is a schematic diagram of the structure of the connection assembly of the utility model;

[0039] Figure 7 It is a schematic diagram of the internal structure of the fixed block of the utility model;

[0040] Markings in the figure are as follows: 1-pressure differential tube 1, 2-pressure differential tube 2, 3-flange 1, 4-flange 2, 5-mounting block, 6-connecting block, 7-slot, 8-slide, 9-corrosion-resistant layer, 10-fixed block, 11-support rod, 12-block, 13-slot, 14-first connecting groove, 15-first slide, 16-mounting groove, 17-push rod, 18-extrusion block, 19-limiting block, 20-spring, 21-second connecting groove, 22-second slide, 23-limiting plate, 24-slider, 25-groove, 26-airbag, 27-annular groove, 28-sealing ring, 29-annular airbag, 30-trachea, 31-protective cover, 32-rectangular groove. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0042] Embodiment 1:

[0043] The present embodiment provides a corrosion-resistant pressure differential tube with a stable connection, including a pressure differential tube 1 and a pressure differential tube 2, wherein one end of the pressure differential tube 1 close to the pressure differential tube 2 is fixedly connected to a flange 3, and one end of the pressure differential tube 2 close to the pressure differential tube 1 is fixedly connected to a flange 4, a mounting block 5 is fixedly installed on the side of the flange 4, and a connecting block 6 is fixedly installed on one end of the mounting block 5, a slot 7 and a slide groove 8 are provided inside the flange 3, the mounting block 5 is located inside the slide groove 8, the connecting block 6 is clamped on the inner side of the flange 3, and a connecting component for fixing the connecting block 6 is provided on the flange 3;

[0044] Corrosion-resistant layer 9: The inner walls of the differential pressure pipe 1 and the differential pressure pipe 2 are both provided with a corrosion-resistant layer 9.

[0045] It can be seen from this embodiment that when the differential pressure tube 1 and the differential pressure tube 2 are connected, the connecting block 6 on the flange 2 4 is aligned with the slot 7 provided on the flange 1 3, and the connecting block 6 is inserted into the slot 7. After insertion, the flange 2 4 is rotated, and the mounting block 5 will slide in the slide groove 8, and the connecting block 6 will be clamped on the side of the flange 1 3. After the connection, Figure 1 As shown, the fixation of the pressure differential tube 1 and the pressure differential tube 2 can be completed, and the connection is simple and fast. A connecting component for fixing the connecting block 6 is provided on the flange 1 3, which further enhances the stability of the connection between the pressure differential tube 1 and the pressure differential tube 2 and prevents loosening after long-term use, thereby ensuring the safe use of the pressure differential tube in a high-pressure difference environment. The inner walls of the pressure differential tube 1 and the pressure differential tube 2 are both provided with a corrosion-resistant layer 9, which significantly improves the corrosion resistance of the pressure differential tube and prolongs its service life.

[0046] Embodiment 2:

[0047] This embodiment provides a corrosion-resistant pressure differential tube with a stable connection. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0048] The cross section of the connecting block 6 is the same as that of the slot 7 , the slot 7 is connected to the slide groove 8 , and the flange 1 3 is located between the flange 2 4 and the connecting block 6 .

[0049] It can be seen from this embodiment that the cross-section of the connecting block 6 is the same as that of the slot 7, and the slot 7 is connected to the slide groove 8. After the connection, flange 1 3 is located between flange 2 4 and the connecting block 6, and flange 1 3 and flange 2 4 are connected through the connecting block 6.

[0050] Embodiment 3:

[0051] This embodiment provides a corrosion-resistant pressure differential tube with a stable connection. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0052] The connection components include:

[0053] A fixing block 10, the fixing block 10 is fixedly arranged on the side of the flange 1 3;

[0054] Support rod 11, the fixed block 10 is provided with a support rod 11;

[0055] A clamping block 12, one end of the support rod 11 is fixedly connected to the clamping block 12;

[0056] A card slot 13 is provided inside the connecting block 6;

[0057] A first connecting groove 14, which is provided on one side of the connecting block 6 and communicates with the card groove 13;

[0058] A first slide groove 15, two first slide grooves 15 are arranged inside the connecting block 6, and the two first slide grooves 15 are communicated with the card slot 13;

[0059] The mounting groove 16 is provided at two side ends of the connecting block 6 and communicates with the first sliding groove 15;

[0060] A push rod 17, which is slidably connected to the first slide groove 15 and has clearance fit with the mounting groove 16;

[0061] An extrusion block 18, the extrusion block 18 is fixedly connected to one end of the push rod 17 close to the slot 13;

[0062] A limit block 19, the limit block 19 is fixedly connected to an end of the push rod 17 away from the slot 13;

[0063] The spring 20 is arranged in the installation groove 16 , and one end of the spring 20 abuts against the limit block 19 , and the other end abuts against the bottom of the installation groove 16 .

[0064] It can be seen from the present embodiment that the push rod 17 and the extrusion block 19 are integrally formed, with high structural strength and long service life. During installation, when the connecting block 6 is inserted into the slot 7, the flange 2 4 is rotated, and the connecting block 6 is clamped on the side of the flange 1 3, the push rod 17 on the installation slot 16 pushes the clamping block 12 to install it into the clamping slot 13, thereby realizing a fixed connection between the fixed block 10 and the connecting block 6. When disassembly is required, the two limit blocks 19 are pushed inward to move, thereby driving the push rod 17 and the extrusion block 18 to move, and the extrusion block 18 squeezes the two ends of the clamping block 12. At this time, the support rod 11 is removed to complete the disassembly. The spring 20 can be provided to restore the position of the limit block 19, the push rod 17 and the extrusion block 18 after the disassembly is completed, so as to avoid obstruction caused by the installation.

[0065] Embodiment 4:

[0066] This embodiment provides a corrosion-resistant pressure differential tube with a stable connection. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0067] The connection components also include:

[0068] A second connecting groove 21, a second connecting groove 21 is provided on one side of the fixing block 10 close to the connecting block 6, and the supporting rod 11 is slidably connected in the second connecting groove 21;

[0069] A second slide groove 22, a second slide groove 22 is provided in the fixed block 10, and the second slide groove 22 is communicated with the second connecting groove 21;

[0070] A limiting plate 23 is slidably disposed in the second slide groove 22, and the limiting plate 23 is fixedly connected to the support rod 11;

[0071] A rectangular groove 32 is provided on a side of the fixing block 10 away from the flange 1 3, and the rectangular groove 32 is communicated with the second slide groove 22;

[0072] The slider 24 is slidably connected to the rectangular groove 32 , and the slider 24 is fixedly connected to the support rod 11 .

[0073] It can be seen from this embodiment that when in use, the connecting block 6 is inserted into the slot 7. After insertion, the flange 24 is rotated, and the mounting block 5 will slide in the slide groove 8. When the mounting block 5 has not completely slid to the bottom, the slider 24 is moved to drive the support rod 11 and the card block 12 to slide into the second slide groove 22. After the mounting block 5 has completely slid to the bottom, the slider 24 is moved again to drive the support rod 11 to slide, thereby installing the card block 12 into the card groove 13. This installation method can prevent the card block 12 from being stuck in the card groove 13 during the movement of the connecting block 6. Since the slide groove 8 is an arc groove, direct insertion will cause the connection to be blocked and cause damage. A limit plate 23 is set to limit the position to prevent the support rod 11 from sliding out of the second connecting groove 21.

[0074] Embodiment 5:

[0075] This embodiment provides a corrosion-resistant pressure differential tube with a stable connection. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0076] A plurality of grooves 25 are formed on the outer wall of one side of the differential pressure tube 1, and air bags 26 are arranged in each of the grooves 25.

[0077] It can be seen from this embodiment that a plurality of grooves 25 are provided on the outer wall of one side of the pressure differential tube 1, and air bags 26 are provided in each of the grooves 25. Therefore, when the pressure differential tube 1 and the pressure differential tube 2 are connected, the outer wall of one side of the pressure differential tube 2 squeezes the air bags 26 in the plurality of grooves 25 on one side of the pressure differential tube 1.

[0078] Embodiment 6:

[0079] This embodiment provides a corrosion-resistant pressure differential tube with a stable connection. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0080] An annular groove 27 is provided on the inner wall of the pressure difference tube 1, and a sealing ring 28 is provided on the inner wall of the annular groove 27.

[0081] It can be seen from the present embodiment that an annular groove 27 is provided on the inner wall of the pressure difference tube 1, and a sealing ring 28 is provided on the inner wall of the annular groove 27.

[0082] Embodiment 7:

[0083] This embodiment provides a corrosion-resistant pressure differential tube with a stable connection. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0084] An annular airbag 29 is provided between the sealing ring 28 and the inner wall of the bottom of the annular groove 27 , and an air pipe 30 is provided between the annular airbag 29 and the airbag 26 .

[0085] It can be seen from the present embodiment that when the pressure differential tube 1 and the pressure differential tube 2 are connected, the outer wall of one side of the pressure differential tube 2 squeezes the airbag 26 in the multiple grooves 25 on one side of the pressure differential tube 1, and the squeezed gas is transported to the annular airbag 29 in the annular groove 27 through the air pipe 30, so that the annular airbag 29 expands to push the sealing ring 28 out of the annular groove 27, thereby sealing the connection between the pressure differential tube 1 and the pressure differential tube 2, thereby ensuring the sealing effect.

[0086] Embodiment 8:

[0087] This embodiment provides a corrosion-resistant pressure differential tube with a stable connection. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0088] Each air pipe 30 is covered with a protective cover 31 on its exterior.

[0089] It can be seen from the present embodiment that a protective cover 31 is provided on the outside of each air pipe 30, and the protective cover 31 is connected to the outside of the air pipe 30, thereby preventing the fluid flowing in the pressure differential tube 1 and the pressure differential tube 2 from corroding the air pipe 30, greatly improving the service life of the air pipe 30, and the position design of the protective cover 31 and the sealing components such as the sealing ring 28 will not hinder the normal flow of gas in the air pipe, and at the same time avoid obstruction or interference to the measuring area of ​​the pressure differential tube, and will not affect the function and monitoring accuracy of the pressure differential tube.

[0090] Working principle: During installation, when connecting the differential pressure tube 1 and the differential pressure tube 2, align the connecting block 6 on the flange 2 4 with the slot 7 provided on the flange 1 3, insert the connecting block 6 into the slot 7, rotate the flange 2 4 after insertion, the mounting block 5 will slide in the slide groove 8, and the connecting block 6 will be clamped on the side of the flange 1 3. When the mounting block 5 has not completely slid to the bottom, move the slider 24 to drive the support rod 11 and the clamping block 12 to slide into the second slide groove 22. After the mounting block 5 has completely slid to the bottom, move the slider 24 again to drive the support rod 11 to slide, thereby installing the clamping block 12 into the clamping groove 13, and realizing the connection between the fixing block 10 and the connecting block 6. Fixed connection, when the pressure differential tube 1 and the pressure differential tube 2 are connected to each other, the outer wall of one side of the pressure differential tube 2 squeezes the airbag 26 in the multiple grooves 25 on one side of the pressure differential tube 1, and the squeezed gas is transported to the annular airbag 29 in the annular groove 27 through the air pipe 30, so that the annular airbag 29 expands to push the sealing ring 28 out of the annular groove 27, and the connection between the pressure differential tube 1 and the pressure differential tube 2 is sealed to ensure the sealing effect; when disassembling, push the two limit blocks 19 to move inward, thereby driving the push rod 17 and the extrusion block 18 to move, and the extrusion block 18 squeezes the two ends of the block 12. At this time, remove the support rod 11 to complete the disassembly.

[0091] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A corrosion-resistant pressure differential pipe with stable connection, comprising a pressure differential pipe 1 (1) and a pressure differential pipe 2 (2), characterized in that: The pressure differential tube one (1) is fixedly connected to one end of the pressure differential tube two (2) with a flange one (3), the pressure differential tube two (2) is fixedly connected to one end of the pressure differential tube one (1) with a flange two (4), a mounting block (5) is fixedly installed on the side of the flange two (4), a connecting block (6) is fixedly installed on one end of the mounting block (5), a slot (7) and a slide groove (8) are provided inside the flange one (3), the mounting block (5) is located inside the slide groove (8), the connecting block (6) is clamped on the inner side of the flange one (3), and a connecting component for fixing the connecting block (6) is provided on the flange one (3); A corrosion-resistant layer (9), wherein the inner walls of the pressure differential pipe 1 (1) and the pressure differential pipe 2 (2) are both provided with a corrosion-resistant layer (9).

2. The corrosion-resistant pressure differential pipe with stable connection according to claim 1, characterized in that: The cross section of the connecting block (6) is the same as that of the slot (7), the slot (7) is connected to the slide groove (8), and the flange one (3) is located between the flange two (4) and the connecting block (6).

3. The corrosion-resistant pressure differential pipe with stable connection according to claim 2, characterized in that: The connection component comprises: A fixing block (10), wherein the fixing block (10) is fixedly arranged on a side surface of flange 1 (3); A support rod (11), wherein the fixing block (10) is provided with a support rod (11); A clamping block (12), one end of the support rod (11) being fixedly connected to the clamping block (12); A card slot (13), wherein the connection block (6) is provided with a card slot (13); A first connecting groove (14), the first connecting groove (14) being disposed on one side of the connecting block (6) and communicating with the card slot (13); A first slide groove (15), wherein two first slide grooves (15) are arranged inside the connecting block (6), and the two first slide grooves (15) are communicated with the clamping groove (13); A mounting groove (16), wherein the mounting groove (16) is provided at two side ends of the connecting block (6) and communicates with the first sliding groove (15); A push rod (17), wherein the push rod (17) is slidably connected to the first slide groove (15) and is clearance-matched with the mounting groove (16); An extrusion block (18), wherein the extrusion block (18) is fixedly connected to one end of the push rod (17) close to the card slot (13); A limit block (19), wherein the limit block (19) is fixedly connected to an end of the push rod (17) away from the slot (13); A spring (20), wherein the spring (20) is arranged in the installation groove (16), and one end of the spring abuts against the limit block (19), and the other end of the spring abuts against the bottom of the installation groove (16).

4. The corrosion-resistant pressure differential pipe with stable connection according to claim 3, characterized in that: The connection component also includes: A second connecting groove (21), wherein the fixing block (10) is provided with a second connecting groove (21) on one side close to the connecting block (6), and the supporting rod (11) is slidably connected in the second connecting groove (21); A second sliding groove (22), wherein the fixing block (10) is provided with a second sliding groove (22), and the second sliding groove (22) is communicated with the second connecting groove (21); A limit plate (23), wherein the limit plate (23) is slidably arranged in the second slide groove (22), and the limit plate (23) is fixedly connected to the support rod (11); A rectangular groove (32), wherein a rectangular groove (32) is provided on a side of the fixing block (10) away from the flange 1 (3), and the rectangular groove (32) is communicated with the second slide groove (22); A slider (24), wherein the slider (24) is slidably connected to the rectangular groove (32), and the slider (24) is fixedly connected to the support rod (11).

5. The corrosion-resistant pressure differential pipe with stable connection according to claim 4, characterized in that: The outer wall of one side of the differential pressure tube (1) is provided with a plurality of grooves (25), and each groove (25) is provided with an air bag (26).

6. The corrosion-resistant differential pressure pipe with stable connection according to claim 5, characterized in that: The inner wall of the pressure differential tube 1 (1) is provided with an annular groove (27), and the inner wall of the annular groove (27) is provided with a sealing ring (28).

7. The corrosion-resistant pressure differential pipe with stable connection according to claim 6, characterized in that: An annular air bag (29) is provided between the sealing ring (28) and the inner wall of the bottom of the annular groove (27), and an air pipe (30) is provided between the annular air bag (29) and the air bag (26).

8. The corrosion-resistant differential pressure pipe with stable connection according to claim 7, characterized in that: The outside of each air pipe (30) is covered with a protective cover (31).

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