Device for measuring differential pressure value of catalyst regeneration device

Abstract

The utility model discloses a device for measuring the differential pressure value of a catalyst regeneration device, and aims to solve the problem that the response time of a differential pressure measuring instrument is too long due to the fact that a pressure guide pipe is too long in the prior art. The technical problem is solved through the following technical scheme: the device comprises two ERS electric remote transmission differential pressure transmitters for measuring differential pressure, the two ERS electric remote transmission differential pressure transmitters are connected with a control system through transmission cables, connecting rods are arranged on the two ERS electric remote transmission differential pressure transmitters, and flange connecting assemblies are arranged on the connecting rods; the flange connecting assembly comprises a connecting sleeve and a connector, and the connector is in threaded connection with the connecting sleeve. According to the utility model, the two ERS electric remote transmission differential pressure transmitters are arranged, so that a pressure guide pipe of the instrument is canceled, and many defects caused by the increase of response time due to the overlong pressure guide pipe of the differential pressure measuring instrument in the catalyst regeneration device are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure measurement, and more specifically, to a device for measuring the differential pressure value of a catalyst regeneration device. Background Technique

[0002] The catalyst regeneration device enables the catalyst in the reactor to maintain high activity through continuous cyclic regeneration of the catalyst, thereby improving the quality and yield of the device products. The long-term stable operation and safe production of the catalyst regeneration device play a very important role in product quality and benefits. Due to the characteristics of the technological process of the catalyst regeneration device, various towers and tanks are mostly installed by stacking pipes from bottom to top, resulting in the measurement of differential pressure values being very important for the cyclic quality and rate of the catalyst. And since the reforming catalyst is a bifunctional catalyst, its metal function and acidic function need to be well coordinated to exert good activity levels, so that the stability and selectivity of the catalyst can be optimally exerted; chlorine is the main source of the acidic function of the catalyst. To maintain the chlorine retention ability in the catalyst carrier, in addition to relying on methods to limit the chlorine content and water content of the feedstock oil, a chlorine injection method is also adopted to ensure the water-chlorine balance of the system.

[0003] In the prior art, the differential pressure measuring instrument has many drawbacks due to the increase in response time caused by the too long pressure guiding pipe, such as control lag, decline in dynamic performance, increased difficulty in diagnosis and fault handling, increased safety risks, increased maintenance costs, and so on; and since a certain amount of chloride ions are contained in the measuring medium after chlorine injection to maintain the acidic function of the catalyst, and 316SS stainless steel belongs to austenitic stainless steel, chloride ions can react with Cr in the stainless steel at the grain boundaries of the austenite to form complex compounds, causing chromium-depleted areas on the crystals, resulting in the corrosion and damage of the stainless steel occurring first between the crystals. And the pressure guiding pipe of the instrument belongs to the blind end of the pipeline medium, and the test medium is in a static state. The higher the chloride ion concentration, the denser the leakage points corroded on the pressure guiding pipe, and the more serious the corrosion, ultimately resulting in typical intergranular corrosion of the pressure guiding pipe made of stainless steel material.

[0004] In addition, the differential pressure measuring instrument in the prior art is connected by a flange during installation. When connecting, multiple bolts are required to fix the flange. When turning multiple bolts, it is very troublesome to install and overhaul the differential pressure measuring instrument. Content of the Utility Model

[0005] The utility model overcomes the following deficiencies in the prior art: (1) due to the too long pressure guiding pipe, the response time of the differential pressure measuring instrument is too long; (2) the chloride ions in the catalyst are easy to react with Cr to form complexes, resulting in corrosion of the pressure guiding pipe and potential leakage of the measuring medium; (3) the differential pressure measuring instrument is installed by multiple bolts, which is inconvenient for installation. A device for measuring the differential pressure value of a catalyst regeneration device is provided. The pressure guiding pipe of the instrument is cancelled, eliminating the potential leakage of the measuring medium and many problems caused by intergranular corrosion due to the contact between the pressure guiding pipe of the instrument and chloride ions in the medium. Secondly, many drawbacks caused by the too long pressure guiding pipe of the differential pressure measuring instrument in the catalyst regeneration device, resulting in an increase in response time, are solved. Finally, the accurate and reliable measurement of the instrument is ensured, and the response is timely, achieving the purpose of meeting the production needs; in addition, when installing and overhauling, it can be disassembled and replaced without using tools such as wrenches, and has the characteristics of convenient installation and overhaul.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions: A device for measuring the differential pressure value of a catalyst regeneration device, comprising: two ERS electric remote transmission differential pressure transmitters for measuring differential pressure. Both ERS electric remote transmission differential pressure transmitters are connected to a control system through transmission cables. A connecting rod is provided on the two ERS electric remote transmission differential pressure transmitters, and a flange connection assembly is provided on the connecting rod; the flange connection assembly includes a connecting sleeve and a connecting head, and the connecting head is threadedly connected to the connecting sleeve.

[0007] By setting two ERS electric remote transmission differential pressure transmitters, the utility model cancels the pressure guiding pipe of the instrument, eliminates the potential leakage of the measuring medium and many problems caused by intergranular corrosion due to the contact between the pressure guiding pipe of the instrument and chloride ions in the medium. Secondly, many drawbacks caused by the too long pressure guiding pipe of the differential pressure measuring instrument in the catalyst regeneration device, resulting in an increase in response time, are solved, such as control lag, decline in dynamic performance, increase in difficulty of diagnosis and fault handling, increase in safety risks, increase in maintenance costs, etc. Finally, the accurate and reliable measurement of the instrument is ensured, and the response is timely, achieving the purpose of meeting the production needs; in addition, when installing and overhauling, only by rotating the connecting head, the connecting head and the connecting sleeve can be connected, so that it can be disassembled and replaced without using tools such as wrenches, and has the characteristics of convenient installation and overhaul.

[0008] Preferably, a butting ring is provided in the circumferential direction of the connecting head, and the butting ring abuts against the end of the connecting sleeve.

[0009] When the connecting head and the connecting sleeve are installed together by threads, the butting ring abuts against the end of the connecting sleeve, and the butting ring plays a role in limiting the connecting head. In addition, when the butting ring abuts against the connecting sleeve, the connection position between the connecting sleeve and the connecting head can be sealed, so as to play a role in preventing leakage.

[0010] Preferably, a plurality of concentrically arranged sealing rings are provided on the end face of the abutting ring facing the connecting sleeve.

[0011] When the end faces of the abutting ring and the connecting sleeve are abutted, the sealing rings are tightly pressed between the end face sealing rings of the connecting sleeve, forming multiple sealing barriers between the connecting sleeve and the abutting ring. Even if leakage occurs between the connector and the connecting sleeve, the sealing rings can prevent leakage.

[0012] Preferably, a guiding surface is provided at the end of the connector, and the guiding surface makes the diameter of the end of the connector gradually decrease.

[0013] The guiding surface makes the diameter of the end of the connector gradually decrease, so that when the connector and the connecting sleeve are aligned, the connector can be more accurately aligned within the connecting sleeve. This makes the cooperation between the connector and the connecting sleeve more accurate and fast.

[0014] Preferably, a sealing cover is provided on the connecting rod. The sealing cover includes an end cover and a side wall ring. An end cover hole is provided on the end cover, and the end cover hole is sleeved on the connecting rod; a plurality of fixing blocks are provided on the circumference of the side wall of the connecting rod, a limiting notch is provided on the fixing block, and a plurality of rotating blocks cooperating with the limiting notch are provided on the inner side wall of the end cover hole.

[0015] When installing the connector, the sealing cover can be rotated so that the rotating blocks are respectively stuck in the limiting notches. Thus, by rotating the sealing cover, the connecting rod can be rotated, and then the connector and the connecting sleeve can be connected. Since the diameter of the sealing cover is larger than the diameters of the connecting rod and the connector, it is labor-saving when rotating the sealing cover.

[0016] Preferably, a plurality of side wall ear plates are provided on the outer side wall of the side wall ring.

[0017] The provision of the side wall ear plates makes it easier to rotate the sealing cover, and thus it is more convenient to cooperate the connector and the connecting sleeve.

[0018] Preferably, an internal thread of the side wall is provided on the inner side wall of the side wall ring, and an external thread of the side wall cooperating with the internal thread of the side wall is provided on the outer side wall of the connecting sleeve.

[0019] When the sealing cover is engaged with the outer side wall of the connecting sleeve, the side wall ring can lock the connector at the end of the connecting sleeve, playing a role of sealing and fixing.

[0020] Preferably, a plurality of sealing rings are concentrically arranged on the inner side wall of the cover. When the sealing cover is engaged with the connecting sleeve, the sealing rings abut against the end faces of the end cover and the abutting ring.

[0021] The sealing ring abuts between the abutting ring and the end cover, forming a sealing barrier therebetween to achieve a better sealing effect.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] By providing two ERS electric remote differential pressure transmitters, the present utility model eliminates the pressure guiding pipes of the instrument, eliminates the hidden danger of measurement medium leakage caused by intergranular corrosion occurring when the pressure guiding pipes of the instrument come into contact with chloride ions in the medium and many problems brought thereby. Secondly, it solves many drawbacks caused by the excessive length of the pressure guiding pipes of the differential pressure measuring instrument in the catalyst regeneration device, resulting in an increase in the response time. Finally, it ensures the accurate and reliable measurement of the instrument, timely response, and achieves the purpose of meeting the production requirements. In addition, during installation and maintenance, only by rotating the connector, the connector and the connecting sleeve can be connected, so that it can be disassembled and replaced without using tools such as wrenches, and has the characteristics of convenient installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0025] Figure 2 is a three-dimensional structure diagram of the flange connection assembly and the ERS electric remote differential pressure transmitter of the present utility model.

[0026] Figure 3 is a three-dimensional sectional view of the flange connection assembly and the ERS electric remote differential pressure transmitter of the present utility model.

[0027] Figure 4 is a three-dimensional structure diagram of the sealing cover of the present utility model.

[0028] Figure 5 is a three-dimensional structure diagram of the flange connection assembly and the ERS electric remote differential pressure transmitter of the present utility model in another state.

[0029] In the figure: 1. First ERS electric remote differential pressure transmitter, 2. Second ERS electric remote differential pressure transmitter, 3. First transmission cable, 4. Second transmission cable, 5. Connecting rod, 51. Fixed block, 52. Limiting notch, 6. Connecting sleeve, 7. Connector, 71. Abutting ring, 72. Sealing ring, 73. Guide surface, 8. Sealing cover, 81. End cover, 82. Side wall ring, 83. End cover hole, 84. Rotating block, 85. Side wall ear plate, 86. Sealing ring, 9. Socket welding gate valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings:

[0031] Embodiment 1: Refer to Figures 1 to 5As shown in the figure, a device for measuring the differential pressure value of a catalyst regeneration device includes: two ERS electric remote transmission differential pressure transmitters for measuring differential pressure. Both of the two ERS electric remote transmission differential pressure transmitters are connected to a control system through transmission cables. A connecting rod 5 is provided on the two ERS electric remote transmission differential pressure transmitters, and a flange connection assembly is provided on the connecting rod 5; the flange connection assembly includes a connecting sleeve 6 and a connector 7, and the connector is threadedly connected to the connecting sleeve 6.

[0032] The two ERS electric remote transmission differential pressure transmitters for measuring differential pressure are respectively a first ERS electric remote transmission differential pressure transmitter 1 and a second ERS electric remote transmission differential pressure transmitter 2. The first ERS electric remote transmission differential pressure transmitter 1 is arranged on the high-pressure side for monitoring the high pressure, while the second ERS electric remote transmission differential pressure transmitter 2 is arranged on the low-pressure side for monitoring the low pressure.

[0033] Specifically, the first ERS electric remote transmission differential pressure transmitter 1 is connected to the socket-welding gate valve 9 on the high-pressure side through a flange connection assembly, and the second ERS electric remote transmission differential pressure transmitter 2 is connected to the socket-welding gate valve 9 on the low-pressure side through a flange connection assembly.

[0034] The first ERS electric remote transmission differential pressure transmitter 1 and the second ERS electric remote transmission differential pressure transmitter 2 are connected through a first transmission cable 3. The first ERS electric remote transmission differential pressure transmitter 1 is connected to the control system through a second transmission cable 4. Both the first transmission cable 3 and the second transmission cable 4 are special signal cables.

[0035] By transmitting the data of the first ERS electric remote transmission differential pressure transmitter 1 and the second ERS electric remote transmission differential pressure transmitter 2 to the control system, the differential pressure value of the catalyst regeneration device can be accurately measured.

[0036] In this application, by setting two ERS electric remote transmission differential pressure transmitters, the pressure guiding pipes of the instruments are cancelled, eliminating the hidden danger of measurement medium leakage and many problems caused by intergranular corrosion when the pressure guiding pipes of the instruments come into contact with chloride ions in the medium. Secondly, many drawbacks caused by the excessive length of the pressure guiding pipes of the differential pressure measuring instruments in the catalyst regeneration device, which lead to an increase in the response time, are solved. Finally, the accurate and reliable measurement of the instruments is ensured, and the response is timely, achieving the purpose of meeting the production requirements; in addition, during installation and maintenance, only by rotating the connector 7, the connector 7 and the connecting sleeve 6 can be connected, so that it can be disassembled and replaced without using tools such as wrenches, having the characteristics of convenient installation and maintenance.

[0037] Example 2: Refer to Figures 1 to 5As shown in the figure, a device for measuring the differential pressure value of a catalyst regeneration device includes: two ERS electric remote transmission differential pressure transmitters for measuring differential pressure. Both of the two ERS electric remote transmission differential pressure transmitters are connected to a control system through transmission cables. A connecting rod 5 is provided on the two ERS electric remote transmission differential pressure transmitters. A perforation connected to the ERS electric remote transmission differential pressure transmitter is provided on the connecting rod 5, so that the ERS electric remote transmission differential pressure transmitter can detect the change in the internal pressure of the catalyst. A flange connection assembly is provided on the connecting rod 5; the flange connection assembly includes a connecting sleeve 6 and a connecting head 7, and the connecting head 7 is threadedly connected to the connecting sleeve 6.

[0038] The two ERS electric remote transmission differential pressure transmitters for measuring differential pressure are respectively a first ERS electric remote transmission differential pressure transmitter 1 and a second ERS electric remote transmission differential pressure transmitter 2. The first ERS electric remote transmission differential pressure transmitter 1 is arranged on the high-pressure side for monitoring the high pressure, while the second ERS electric remote transmission differential pressure transmitter 2 is arranged on the low-pressure side for monitoring the low pressure.

[0039] Specifically, the first ERS electric remote transmission differential pressure transmitter 1 is connected to the socket-welding gate valve 9 on the high-pressure side through a flange connection assembly, and the second ERS electric remote transmission differential pressure transmitter 2 is connected to the socket-welding gate valve 9 on the low-pressure side through a flange connection assembly.

[0040] The first ERS electric remote transmission differential pressure transmitter 1 and the second ERS electric remote transmission differential pressure transmitter 2 are connected through a first transmission cable 3. The first ERS electric remote transmission differential pressure transmitter 1 is connected to the control system through a second transmission cable 4. Both the first transmission cable 3 and the second transmission cable 4 adopt special signal cables.

[0041] By transmitting the data of the first ERS electric remote transmission differential pressure transmitter 1 and the second ERS electric remote transmission differential pressure transmitter 2 to the control system, the differential pressure value of the catalyst regeneration device can be accurately measured.

[0042] The connecting sleeve 6 is installed on the socket-welding gate valve 9 by welding. An external thread is provided on the outer side wall of the connecting head 7, and an internal thread is provided on the inner wall of the connecting sleeve 6. A butting ring 71 is provided in the circumferential direction of the connecting head 7. When the connecting head 7 and the connecting sleeve 6 are installed together by threading, the butting ring 71 abuts against the end of the connecting sleeve 6, and the butting ring 71 plays a role in limiting the connecting head 7. In addition, when the butting ring 71 abuts against the connecting sleeve 6, the connection position between the connecting sleeve 6 and the connecting head 7 can be sealed, so as to play a role in preventing leakage.

[0043] In one embodiment, in order to achieve a better sealing effect when the abutting ring 71 abuts against the end face of the connecting sleeve 6, a plurality of concentric sealing rings 72 are provided on the end face of the abutting ring 71 facing the connecting sleeve 6. The sealing rings 72 are made of rubber material. Two sealing rings 72 are provided in this embodiment. When the abutting ring 71 abuts against the end face of the connecting sleeve 6, the sealing rings 72 are tightly pressed between the end face sealing rings 72 of the connecting sleeve 6, forming multiple sealing barriers between the connecting sleeve 6 and the abutting ring 71. Even if leakage occurs between the connector 7 and the connecting sleeve 6, the sealing rings 72 can prevent the leakage from happening.

[0044] In one embodiment, in order to facilitate the connection between the connector 7 and the connecting sleeve 6 when they are connected, the connector 7 can be more conveniently and quickly connected to the connecting sleeve 6. A guiding surface 73 is provided at the end of the connector 7. The guiding surface 73 makes the diameter of the end of the connector 7 gradually decrease, so that when the connector 7 and the connecting sleeve 6 are aligned, the connector 7 can be more accurately aligned within the connecting sleeve 6. This makes the cooperation between the connector 7 and the connecting sleeve 6 more accurate and fast.

[0045] In this application, by setting two ERS electric remote differential pressure transmitters, the pressure guiding pipes of the instrument are cancelled, eliminating the hidden danger of measurement medium leakage caused by intergranular corrosion when the pressure guiding pipes of the instrument contact with chloride ions in the medium and many problems brought by it. Secondly, it solves many disadvantages brought by the excessive length of the pressure guiding pipes of the differential pressure measuring instruments in the catalyst regeneration device, resulting in an increase in the response time. Finally, it ensures the accurate and reliable measurement of the instrument, timely response, and achieves the purpose of meeting the production needs; in addition, during installation and maintenance, by simply rotating the connector 7, the connector 7 and the connecting sleeve 6 can be connected, so that it can be disassembled and replaced without using tools such as wrenches, and has the characteristics of convenient installation and maintenance.

[0046] Example 3: Refer to Figures 1 to 5 As shown, the structure in this embodiment is similar to that in Embodiment 2. The difference is that in order to more conveniently install the connector 7 and the connecting sleeve 6, in this embodiment, a sealing cover 8 is provided on the connecting rod. The sealing cover 8 includes an end cover 81 and a side wall ring 82. An end cover hole 83 is provided on the end cover 81. The end cover hole 83 is sleeved on the connecting rod 5, and the diameter of the end cover hole 83 is larger than the diameter of the connecting rod 5, so that the sealing cover 8 can slide and rotate on the connecting rod 5. A plurality of fixing blocks 51 are provided on the circumferential direction of the side wall of the connecting rod 5. A limiting notch 52 is provided on the fixing block 51. A plurality of rotating blocks 84 cooperating with the limiting notch 52 are provided on the inner side wall of the end cover hole 83.

[0047] The number of the rotating blocks 84 is the same as that of the fixed blocks 51 and they can correspond to each other one by one. In this embodiment, the numbers of the rotating blocks 84 and the fixed blocks 51 are both set to three, and the included angle between each two of them is 120 degrees.

[0048] When installing the connector 7, the sealing cover 8 can be rotated so that the rotating blocks 84 are respectively stuck in the limiting notches 52, and thus by rotating the sealing cover 8, the connecting rod 5 can be rotated, and further the connector 7 and the connecting sleeve 6 can be connected. Since the diameter of the sealing cover 8 is larger than the diameters of the connecting rod 5 and the connector 7, it is labor-saving to rotate the sealing cover 8.

[0049] In one embodiment, a plurality of side wall ear plates 85 are arranged on the outer side wall of the side wall ring 82. In this embodiment, two side wall ear plates 85 are provided, and the two side wall ear plates 85 are arranged at both ends in the radial direction of the side wall ring 82. The arrangement of the side wall ear plates 85 makes it easier to rotate the sealing cover 8, and thus it is more convenient to fit the connector 7 and the connecting sleeve 6.

[0050] In addition, an internal thread of the side wall is arranged on the inner side wall of the side wall ring 82, and an external thread of the side wall that mates with the internal thread of the side wall is arranged on the outer side wall of the connecting sleeve 6. When the sealing cover 8 mates with the outer side wall of the connecting sleeve 6, the side wall ring 82 can lock the connector 7 at the end of the connecting sleeve 6, playing a role in sealing and fixing. Therefore, the sealing cover 8 in this embodiment has two functions: (1) The rotating blocks 84 and the fixed blocks 51 cooperate with each other, so that the sealing cover 8 can easily rotate the connecting rod 5, and thus it is convenient to fit the connector 7 and the connecting sleeve 6; (2) After the connector 7 and the connecting sleeve 6 are installed, the rotating blocks 84 are removed from the limiting notches 52, so that the side wall ring 82 can be threadedly connected with the connecting sleeve 6, and thus the connector 7 is locked at the end of the connecting sleeve 6, thereby playing a role in sealing and fixing the connector 7.

[0051] A plurality of sealing rings 86 are concentrically arranged on the inner side wall of the end cover 81. When the sealing cover 8 mates with the connecting sleeve 6, the sealing rings 86 abut against the end faces of the end cover 81 and the abutting ring 71. The sealing rings 86 abut between the abutting ring 71 and the end cover 81, forming a sealing barrier between the abutting ring 71 and the end cover 81, playing a better sealing role.

[0052] In this embodiment, by providing the sealing cover 8, when installing the connector 7, the sealing cover 8 can be rotated so that the rotating blocks 84 are respectively stuck in the limiting notches 52. Thus, by rotating the sealing cover 8, the connecting rod 5 can be rotated, and then the connector 7 and the connecting sleeve 6 can be connected. Since the diameter of the sealing cover 8 is larger than the diameters of the connecting rod 5 and the connector 7, rotating the sealing cover 8 can save effort. In addition, an inner sidewall thread is provided on the inner sidewall of the sidewall ring 82, and an outer sidewall thread that mates with the inner sidewall thread is provided on the outer sidewall of the connecting sleeve 6. When the sealing cover 8 mates with the outer sidewall of the connecting sleeve 6, the sidewall ring 82 can lock the connector 7 at the end of the connecting sleeve 6, serving the functions of sealing and fixing. Therefore, the sealing cover 8 in this embodiment has two functions: (1) The rotating blocks 84 cooperate with the fixed blocks 51 so that the sealing cover 8 can conveniently rotate the connecting rod 5, thus facilitating the mating of the connector 7 and the connecting sleeve 6; (2) After the connector 7 and the connecting sleeve 6 are installed, the rotating blocks 84 are removed from the limiting notches 52, so that the sidewall ring 82 can be threadedly connected to the connecting sleeve 6, thereby locking the connector 7 at the end of the connecting sleeve 6, thus serving the functions of sealing and fixing the connector 7.

[0053] The above-described embodiments are only preferred solutions of the present utility model and do not impose any form of limitation on the present utility model. There are other variations and modifications without exceeding the technical solutions recited in the claims.

Claims

1. A device for measuring the differential pressure value of a catalyst regeneration device, characterized in that: include: Two ERS electrical remote differential pressure transmitters for measuring pressure difference are connected to a control system via a transmission cable. Connecting rods are provided on the two ERS electrical remote differential pressure transmitters, and flange connection components are provided on the connecting rods. The flange connection components include a connecting sleeve and a connecting head, and the connecting head and the connecting sleeve are threadedly connected.

2. The device for measuring the differential pressure value of a catalyst regeneration device according to claim 1, characterized in that: An abutment ring is arranged in the circumferential direction of the connector, and the abutment ring abuts against the end of the connecting sleeve.

3. The device for measuring the differential pressure value of a catalyst regeneration device according to claim 2, characterized in that: A plurality of concentrically arranged sealing rings are arranged on the end surface of the abutment ring facing the connecting sleeve.

4. The device for measuring the differential pressure value of a catalyst regeneration device according to any one of claims 1 to 3, characterized in that: The end of the connector is provided with a guide surface, and the guide surface causes the diameter of the end of the connector to gradually decrease.

5. The device for measuring the differential pressure value of a catalyst regeneration device according to claim 1, characterized in that: A sealing cover is provided on the connecting rod, the sealing cover includes an end cover and a side wall ring, the end cover is provided with an end cover hole, and the end cover hole is sleeved on the connecting rod; a plurality of fixed blocks are provided in the circumferential direction of the side wall of the connecting rod, a limiting notch is provided on the fixed block, and a plurality of rotating blocks cooperating with the limiting notch are provided on the inner side wall of the end cover hole.

6. The device for measuring the differential pressure value of a catalyst regeneration device according to claim 5, characterized in that: The outer side wall of the side wall ring is provided with a plurality of side wall ear plates.

7. The device for measuring the differential pressure value of a catalyst regeneration device according to claim 5, characterized in that: The inner side wall of the side wall ring is provided with a side wall internal thread, and the outer side wall of the connecting sleeve is provided with a side wall external thread matched with the side wall internal thread.

8. The device for measuring the differential pressure value of a catalyst regeneration device according to any one of claims 5 to 7, characterized in that: The inner side wall of the end cover is concentrically provided with a plurality of sealing rings. When the sealing cover is matched with the connecting sleeve, the sealing rings abut against the end surfaces of the end cover and the abutting ring.

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