Novel pressing tool for reaction kettle
By using a new type of pressure testing tool to perform local pressure testing on the interface pipes of the reactor, the problem of overall pressure testing of the reactor body during rework was solved, achieving efficient and low-damage pressure testing operations, and improving the service life of the reactor body and production efficiency.
Patent Information
- Application Number
- CN202520364647.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-04
AI Technical Summary
In the existing technology, the rework of the reactor requires an overall pressure test, which increases the workload and causes damage to the reactor body.
A new type of pressure testing tool is adopted, which combines a flange cover and an insert to achieve local pressure testing of the reactor interface pipe, thus avoiding damage to the entire reactor body.
It reduced workload, decreased damage to the vessel body, improved manufacturing efficiency, saved water resources and testing time, extended the service life of the vessel body, and reduced production costs.
Smart Images
Figure CN223955316U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pressure vessel manufacturing technical field, concretely relates to a novel press tool for reaction kettle. BACKGROUND
[0002] The reaction kettle is a device for chemical reaction, physical and chemical process and laboratory research, has high corrosion resistance and high temperature and high pressure bearing capacity, is widely used in pharmacy, chemical industry, food processing and other fields to meet the needs of different processes.
[0003] Please refer to the attached Figure 1 During the manufacturing process of the reaction kettle 100, the pressure test is a key step to ensure the safety and reliability of the reaction kettle 100. According to the existing design standard, the reaction kettle 100 is not allowed to be repaired and welded after the water pressure test, so as to avoid affecting the strength and sealing performance of the reaction kettle 100.
[0004] However, in the actual manufacturing process, due to the bumping injury, unreasonable structure or other reasons, the reaction kettle 100 will inevitably appear the situation needing repair, especially the interface pipe 110 and other parts protruding out of the reaction kettle 100. In the prior art, the overall pressure test needs to be carried out again when the reaction kettle 100 is repaired, which not only increases the workload, but also causes certain damage to the reaction kettle 100 itself. UTILITY MODEL CONTENT
[0005] In order to solve the problems existing in the prior art, the utility model provides a novel press tool for reaction kettle, which can be used for local pressure test of the reaction kettle repair, and avoid damaging the reaction kettle.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] The utility model provides a novel press tool for reaction kettle, which is used for local pressure test of the interface pipe of the reaction kettle, the interface pipe includes a connecting pipe body and a connecting flange, and the novel press tool for reaction kettle includes a flange cover and an embedded body, the embedded body is fixedly connected with the inner end face of the flange cover.
[0008] An annular sealing groove is formed on the outer side wall of the embedded body, and a sealing element is installed in the sealing groove.
[0009] The flange cover is provided with a press channel, one end of the press channel is opened on the inner end face of the flange cover, and the other end is provided with a press connecting pipe for connecting the press system;
[0010] In use, the flange cover is connected with the connecting flange, the inner-embedded body extends into the interface pipe, and a closed pressing cavity is formed between the inner-embedded body and the interface pipe, and the pressing cavity communicates with the pressing channel.
[0011] In the novel pressing tool for the reaction kettle, the pressing channel comprises a radial channel and an axial channel which communicate with each other;
[0012] The axial channel extends in the axial direction of the flange cover and is open on the inner end face of the flange cover.
[0013] The radial channel extends in the radial direction of the flange cover and is open on the circumferential side face of the flange cover.
[0014] In the novel pressing tool for the reaction kettle, the inner end face of the flange cover is provided with a convex boss which protrudes outward, and an end of the boss away from the inner end face forms a pressing sealing surface.
[0015] The pressing channel is open on the pressing sealing surface, and the inner-embedded body is arranged on the pressing sealing surface.
[0016] In the novel pressing tool for the reaction kettle, the inner-embedded body has a tubular structure and has a cavity inside.
[0017] In the novel pressing tool for the reaction kettle, an end of the inner-embedded body away from the flange cover is closed by a blocking plate.
[0018] In the novel pressing tool for the reaction kettle, a sealing gasket is further arranged, and the sealing gasket can form a seal between the flange cover and the connecting flange.
[0019] In the novel pressing tool for the reaction kettle, the sealing gasket is a winding gasket.
[0020] In the novel pressing tool for the reaction kettle, the flange cover is provided with a flange connecting hole.
[0021] The novel pressing tool for the reaction kettle has the following beneficial effects:
[0022] The novel pressing tool for the reaction kettle realizes local pressure test after the interface pipe welding seam or sealing surface is repaired by the combination of the flange cover and the inner-embedded body, and the local pressure test of the repaired part can reduce the workload, reduce the damage to the reaction kettle, and improve the manufacturing efficiency without affecting the overall strength of the reaction kettle.
[0023] The overall structure of the inner-embedded body, the flange cover, the sealing gasket and the sealing element is simple, and the manufacturing and use costs are low.
[0024] Simple operation, short pressure test preparation and operation time, safe and reliable;
[0025] Different from the existing whole pressure test, the idea of locally pressure testing the interface pipe and the operation reduce the pressure test times of the reaction kettle as a whole, save water resources and test time, reduce the damage caused by the repair to the main body and other parts of the reaction kettle, improve the service life of the reaction kettle, improve the efficiency of the reaction kettle manufacturing and re-pressure test process, and reduce the production cost. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is a local structure schematic view of the reaction kettle in the prior art;
[0027] Figure 2 It is a use state schematic view of the novel pressure tool for the reaction kettle of the utility model;
[0028] Figure 3 It is a structure schematic view of the flange cover in the novel pressure tool for the reaction kettle of the utility model;
[0029] Figure 4 It is a structure schematic view of the embedded pipe in the novel pressure tool for the reaction kettle of the utility model.
[0030] In the drawing:
[0031] 100-reaction kettle; 110-interface pipe; 111-connection pipe body; 112-connection flange; 210-flange cover; 211-radial channel; 212-axial channel; 213-flange connection hole; 214-pressure sealing surface; 220-embedded body; 221-sealing groove; 222-cavity; 230-sealing element; 240-plugging plate; 250-sealing gasket; 260-pressure connection pipe; 300-pressure cavity. DETAILED DESCRIPTION
[0032] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with the drawings.
[0033] Please refer to Figure 1 and Figure 2The interface pipe 110 of the reaction kettle 100 generally comprises a connecting pipe body 111 and a connecting flange 112. One end of the connecting pipe body 111 is in communication with the main body of the reaction kettle 100 and is welded and fixed as a whole, and the other end is welded and fixed with the connecting flange 112. The connecting flange 112 is used for connecting external detection equipment, pipelines and the like. The repair operation generally involves the connecting weld between the connecting pipe body 111 and the connecting flange 112 and the sealing surface of the connecting flange 112. The purpose of the pressure test is to verify the structural strength and sealing performance of the reaction kettle 100. In practice, it is found that, since the interface pipe 110 is far away from the main body of the reaction kettle 100, local repair of the interface pipe 110 will not affect the sealing performance of the main body and other structures of the reaction kettle 100, so only the local pressure test of the interface pipe 110 can be performed. Therefore, the present scheme proposes a new type of pressing tool for a reaction kettle. Please refer to Figures 1-4 The repair of the interface pipe 110 can be performed by local pressure test operation; after the repair of the interface pipe 110 is completed, pressure test is performed, and the reaction kettle 100 as a whole does not need to be pressed again, which is simple to operate and does not damage the reaction kettle 100.
[0034] Specifically, the new type of pressing tool for a reaction kettle comprises a flange cover 210 and an embedded body 220. The embedded body 220 is fixedly connected with one of the end faces of the flange cover 210. In the following, the end face connecting the flange cover 210 and the embedded body 220 is referred to as the inner end face, and the end face opposite to the inner end face of the flange cover 210 is referred to as the outer end face. In use, the flange cover 210 is connected with the connecting flange 112, and the tool is fixed on the interface pipe 110; the embedded body 220 extends into the interface pipe 110, and a pressing cavity 300 is formed between the embedded body 220 and the interface pipe 110.
[0035] As shown in Figure 2 and Figure 3 , the flange cover 210 is provided with a pressing channel. One end of the pressing channel is opened on the inner end face of the flange cover 210 and communicates with the pressing cavity 300; the other end can be opened on the outer end face opposite to the pressing sealing surface 214 of the flange cover 210, or can be opened on the circumferential side face of the flange cover 210. Exemplarily, the pressing channel comprises a radial channel 211 and an axial channel 212. The axial channel 212 extends in the axial direction of the flange cover 210 and is opened on the inner end face of the flange cover 210. The radial channel 211 extends in the radial direction of the flange cover 210 and is opened on the circumferential side face of the flange cover 210, and the radial channel 211 and the axial channel 212 communicate with each other. During the pressure test operation, the radial channel 211 is connected with the pressing system by the pressing connector 260, and the axial channel 212 communicates with the pressing cavity 300. The pressing system directly uses the existing pressing equipment, and only needs to connect the pressing pipeline with the pressing channel by the pressing connector 260. The connection and communication mode of the pressing pipeline and the pressing connector 260 is the prior art, which will not be described here.
[0036] Furthermore, the inner end face of the flange cover 210 is provided with a protruding boss. The end of the boss away from the inner end face forms a pressure sealing surface 214. The pressure sealing surface 214 protrudes outward from the inner end face of the flange cover 210, which reduces the machining area of the pressure sealing surface 214, thereby reducing the machining difficulty and making it easier to control the precision of the pressure sealing surface 214. The pressure channel opens on the pressure sealing surface 214, which is beneficial for sealing.
[0037] To achieve a fixed connection between the flange cover 210 and the interface pipe 110, clamping fixtures, such as manual or pneumatic clamps, can be used. Preferably, the flange cover 210 is provided with flange connection holes 213, which are smooth holes that penetrate the inner and outer end faces of the flange cover 210. The position and number of flange connection holes 213 can be set according to the structure of the interface pipe 110 to be tested, so that the flange connection holes 213 match the mounting holes on the connecting flange 112. During the pressure test, the flange cover 210 and the connecting flange 112 can be fixedly connected using bolt assemblies.
[0038] Preferably, the insert 220 is centrally positioned on the pressure sealing surface 214. The cross-section of the insert 220 can be any shape, such as circular, annular, or rectangular, as long as it can extend into the inner cavity of the interface pipe 110. The insert 220 is preferably a tubular structure, especially a round pipe; the insert 220 has an internal cavity 222, which reduces material usage. For example, the insert 220 is made of tubular material and is fixed to the flange cover 210 by welding to form a seal. Furthermore, the end of the insert 220 away from the flange cover 210 is sealed by a blocking plate 240 to close the cavity 222.
[0039] like Figure 2 and Figure 4 As shown, an annular sealing groove 221 is machined on the outer wall of the inlay 220. A sealing element 230 is installed in the sealing groove 221. The sealing element 230 seals the inner end of the pressure chamber 300, isolating the pressure test medium of the interface pipe 110 from the main body of the reactor 100. When the interface pipe 110 is subjected to local pressure testing, the high-pressure liquid will not act on the main body of the reactor 100, thus avoiding any impact on the main body of the reactor 100. The sealing element 230 can be an existing sealing component such as a sealing ring.
[0040] It also includes a gasket 250, which can be a spiral wound gasket, especially an internally and externally reinforced metal spiral wound gasket, which has good high-pressure sealing performance. The gasket 250 can form a seal between the flange cover 210 and the connecting flange 112.
[0041] In use, the sealing element 230 and the inner insert 220 are inserted into the interface pipe 110, and then the flange cover 210 is fixedly connected with the connecting flange 112 through the bolt assembly, so that the sealing element 230, the inner insert 220, the interface pipe 110 and the flange cover 210 enclose a closed pressure cavity 300. The pressure system 260 pressurizes the pressure cavity 300 through the pressure channel, so as to realize local pressure test on the weld or sealing surface of the interface pipe 110.
[0042] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A new type of pressure test tool for a reaction kettle, used for local pressure test of an interface pipe (110) of a reaction kettle (100), the interface pipe (110) comprising a connecting pipe body (111) and a connecting flange (112); characterized in that, The novel pressing tool for the reaction kettle comprises a flange cover (210) and an inlay (220), and the inlay (220) is fixedly connected with the inner end face of the flange cover (210); An annular sealing groove (221) is formed on the outer side wall of the inlay (220), and a sealing element (230) is arranged in the sealing groove (221); The flange cover (210) is provided with a pressing channel, one end of the pressing channel is opened on the inner end face of the flange cover (210), and the other end is provided with a pressing connecting pipe (260) for connecting an external pressing system; In use, the flange cover (210) is connected with the connecting flange (112), the inlay (220) is inserted into the interface pipe (110), and a closed pressing cavity (300) is formed between the inlay (220) and the interface pipe (110), and the pressing cavity (300) is communicated with the pressing channel.
2. The new type of pressing tool for reaction kettle according to claim 1, characterized in that, The pressing channel comprises a radial channel (211) and an axial channel (212) which are communicated with each other; The axial channel (212) extends in the axial direction of the flange cover (210) and is opened on the inner end face of the flange cover (210); The radial channel (211) extends in the radial direction of the flange cover (210) and is opened on the circumferential side face of the flange cover (210).
3. The new type of pressing tool for reaction kettle according to claim 1, characterized in that, An outwardly convex boss is arranged on the inner end face of the flange cover (210), and one end of the boss away from the inner end face forms a pressing sealing surface (214); The pressing channel is opened on the pressing sealing surface (214), and the inlay (220) is arranged on the pressing sealing surface (214).
4. The new type of pressing tool for reaction kettle according to claim 1, characterized in that, The inlay (220) is a tubular structure and has a cavity (22) in the inside.
5. The new type of pressing tool for reaction kettle according to claim 4, characterized in that, One end of the inlay (220) away from the flange cover (210) is closed by a blocking plate (240) to close the cavity (22).
6. The new type of pressing tool for reaction kettle according to claim 1, characterized in that, A sealing gasket (250) is further arranged, and the sealing gasket (250) can form a seal between the flange cover (210) and the connecting flange (112).
7. The new type of pressing tool for reaction kettle according to claim 6, characterized in that, The sealing gasket (250) is a winding gasket.
8. The new type of pressing tool for reaction kettle according to claim 1, characterized in that, The flange cover (210) is provided with a flange connecting hole (213).